CN107701408B - Peristaltic pump based on differential mechanism - Google Patents

Abstract

The invention belongs to the technical field of pumps, and particularly relates to a peristaltic pump based on a differential mechanism, which comprises a driving mechanism, a pump mechanism and a mounting plate, wherein when people use the pump designed by the invention; driving the motor to work; the driving motor drives the sixth rotating shaft to rotate through the differential mechanism when working; the sixth rotating shaft rotates to enable the three rolling wheels to rotate around the axis of the sixth rotating shaft; in the rotating process of the three rolling wheels, the three rolling wheels can apply a driving force to the liquid in the conveying pipeline to enable the liquid in the conveying pipeline to flow; on the other hand, the differential mechanism can drive the second rotating shaft to rotate; the rotation of the second rotating shaft can instantly increase the rotating speed of the corresponding rolling wheel; the instantaneous increase of the rotating speed of the rolling wheel can cause the flow speed of the liquid in the conveying pipeline to be instantaneously increased; the fluctuation of the liquid conveying amount in the conveying pipeline is compensated by the instant increase of the flowing speed of the liquid in the conveying pipeline; the stability of the liquid conveying amount in the conveying pipeline is ensured.

Description

A Peristaltic Pump Based on Differential

Technical field

The invention belongs to the technical field of pumps, in particular to a differential-based peristaltic pump.

Background technique

In the current traditional peristaltic pump, the rotor of the peristaltic pump will compress the flexible tube as it rotates relative to the inner wall of the housing, so that the liquid flows from the inlet to the outlet; the rotor can be driven by a motor, and the flow of the liquid can be controlled by controlling the speed, with a gearbox The constant speed drive can increase or decrease the flow of liquid at the same speed; but when the rotor is separated from the flexible pipe, the flow of liquid will fluctuate temporarily; and people sometimes need the flow of liquid to be constant during use. It is very difficult for traditional peristaltic pumps to do this; so it is very necessary to design a peristaltic pump that can keep the flow of liquid constant.

The present invention designs a peristaltic pump based on a differential to solve the above problems.

Contents of the invention

In order to solve the above-mentioned defects in the prior art, the present invention discloses a peristaltic pump based on a differential, which is realized by adopting the following technical solutions.

A differential-based peristaltic pump is characterized in that it includes a driving mechanism, a pump mechanism and a mounting plate, wherein the driving mechanism is mounted on the mounting plate; the pump mechanism is mounted on the mounting plate; the driving mechanism cooperates with the pump mechanism.

The above-mentioned drive mechanism includes a flywheel mounting case, a differential, a drive motor, a second support, a motor support, a first gear, an arc-shaped iron block, a magnet block, a return spring, a centrifugal groove, a fourth gear, a fifth gear, and a flywheel , the first rotating shaft, the second rotating shaft, the fifth rotating shaft, the escape hole, the fourth shaft hole, the tenth gear, and the tenth rotating shaft, wherein the drive motor is installed on the upper side of the mounting plate through the motor support; the differential is installed through the second support On the upper side of the mounting plate; the input shaft of the differential is connected to the rotating shaft of the drive motor; one end of the second rotating shaft is connected to an output shaft of the differential; one side of the flywheel mounting shell has an avoidance hole and a fourth shaft hole; the flywheel mounting shell is installed on the upper side of the mounting plate; the other end of the second rotating shaft passes through the fourth shaft hole on the flywheel mounting shell and is installed in the circular hole in the flywheel mounting shell; the first gear is mounted on the second The other end of the rotating shaft; the first rotating shaft is installed on the inner side of the flywheel installation shell; the fourth gear is installed on the first rotating shaft, and the fourth gear meshes with the first gear; one end of the fifth rotating shaft is installed on the circle in the flywheel mounting shell The fifth gear is installed at one end of the fifth rotating shaft, and the fifth gear meshes with the fourth gear; there are three centrifugal grooves evenly distributed in the circumferential direction on the outer surface of the flywheel; the three magnet blocks are respectively installed on the three In a centrifugal groove; on the three magnet blocks, a return spring is installed between one end in the centrifugal groove and the corresponding centrifugal groove; one end of the flywheel has bevel teeth; the flywheel is installed on the other end of the fifth rotating shaft; The rotating shaft is installed on the lower side of the flywheel installation shell; one end of the tenth gear has bevel teeth; the tenth gear is installed on the tenth rotating shaft; the bevel teeth on the tenth gear mesh with the bevel teeth on the flywheel; the arc-shaped iron block The utility model is installed on the upper surface of the flywheel installation shell; the arc-shaped iron blocks are matched with three magnet blocks respectively.

The above-mentioned pump mechanism includes the first support, the pipe installation shell, the sixth shaft hole, the conveying pipe, the rolling wheel, the seventh rotating shaft, the pump inlet pipe, the pump outlet pipe, the first driving plate, the connecting structure, the guiding telescopic arc plate, the arc Telescopic centrifugal block, sixth rotating shaft, tooth slot, second drive plate, drive groove, rotating ring, third drive plate, drive teeth, compression spring installation groove, delivery pipeline installation groove, wherein the pipeline installation shell is U-shaped; There is an installation groove on one side of the pipeline installation shell; the inner side of the pipeline installation shell has a U-shaped transmission pipeline installation groove, and the transmission pipeline installation groove is matched with the installation groove; the other side of the pipeline installation shell has a sixth shaft hole; the pipeline installation The shell is installed on the upper side of the mounting plate through the first support; the mounting groove on the pipe mounting shell is matched with the escape hole on the flywheel mounting shell; A set of tooth alveoli; the tooth alveoli in each set of tooth alveoli in the three groups of tooth alveoli are evenly distributed in the circumferential direction on the outer circular surface of the sixth rotating shaft; one end of the sixth rotating shaft passes through the escape hole on the flywheel mounting shell Located inside the flywheel mounting case; the other end of the sixth shaft passes through the sixth shaft hole on the pipe mounting case to connect with the other output shaft of the differential; one side of the drive teeth has an arc surface; the sixth shaft has an outer circle A driving tooth is respectively installed in the three groups of tooth sockets on the surface, and a compression spring is respectively installed between each driving tooth and the corresponding tooth socket; the inner circular surface of the rotating ring is evenly opened There are multiple driving slots; one end of the first driving plate has a circular notch; a rotating ring is installed on the side of the end of the first driving plate with the circular notch; the first driving plate is installed on the sixth rotating shaft through the corresponding rotating ring On; one end of the second drive plate has a circular notch; a rotating ring is installed on one side of the end of the second driving plate having the circular notch; the second driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; the third One end of the driving plate has a circular notch; a rotating ring is installed in the middle of the end of the third driving plate with the circular notch; the third driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; The drive ring, the drive ring on the second drive plate and the drive ring on the third drive plate cooperate with each other; the drive ring on the first drive plate, the drive ring on the second drive plate and the drive ring on the third drive plate respectively Cooperate with the three sets of driving teeth on the sixth rotating shaft; the first driving plate, the second driving plate and the third driving plate are all located in the installation grooves in the pipe installation shell; between the first driving plate and the second driving plate, Between the second drive plate and the third drive plate, between the third drive plate and the first drive plate, a guide telescopic arc plate is respectively installed; three seventh rotating shafts are respectively installed on the first drive plate, the second drive plate and the The end of the drive ring is not installed on the third drive plate; the three scroll wheels are respectively installed on the three seventh rotating shafts; the three connecting structures are respectively installed on the first drive plate, the second drive plate and the third drive plate, And the three connection structures and the corresponding three rolling wheels are respectively located on both sides of the first drive plate, the second drive plate and the third drive plate; the three arc-shaped telescopic centrifugal blocks are respectively installed on the sides of the three connection structures, and Three arc-shaped telescopic centrifugal blocks and corresponding connecting knots There is an acute angle between the structures; three arc-shaped telescopic centrifugal blocks cooperate with the tenth gear; the delivery pipeline is installed in the delivery pipeline installation groove in the pipeline installation shell; the delivery pipeline is matched with three rolling wheels; the pump inlet pipe and the pump The outlet pipes are respectively installed on the two upper end surfaces of the U-shaped pipe installation shell; the pump inlet pipe and the pump outlet pipe communicate with the two ends of the delivery pipe respectively.

As a further improvement of this technology, the above-mentioned arc-shaped telescopic centrifugal block includes an arc-shaped telescopic inner plate, a tension spring, and an arc-shaped telescopic overcoat, wherein one end of the arc-shaped telescopic inner plate is installed in the arc-shaped telescopic overcoat; the arc-shaped telescopic inner plate Two symmetrical tension springs are installed between one end located inside the arc-shaped telescopic jacket and the arc-shaped telescopic jacket.

As a further improvement of this technology, the above-mentioned arc-shaped telescopic inner plate cooperates with the tenth gear; the end surface of the arc-shaped telescopic inner plate close to the tenth gear is tangent to the outer circular surface of the tenth gear.

As a further improvement of the technology, the arc-shaped telescopic inner plate has wavy teeth at the end close to the tenth gear.

As a further improvement of the present technology, the above-mentioned delivery pipeline is a flexible pipe.

Compared with the traditional pump technology, in the present invention, the rotation speed of one of the three rolling wheels driving the delivery pipeline is suddenly accelerated through the drive of the flywheel; thus, the delivery speed of the liquid in the delivery pipeline is accelerated; The impact of fluctuations in the delivery volume of liquid on the delivery of liquid in the delivery pipeline.

In the present invention, the driving motor is installed on the upper side of the mounting plate through the motor support; the differential is installed on the upper side of the mounting plate through the second support; the input shaft of the differential is connected with the rotating shaft of the driving motor; one end of the second rotating shaft is connected to the An output shaft of the differential is connected; the flywheel mounting case is installed on the upper side of the mounting plate; the other end of the second rotating shaft passes through the fourth shaft hole on the flywheel mounting case and is installed in the circular hole in the flywheel mounting case; A gear is installed on the other end of the second rotating shaft; the first rotating shaft is installed on the inner side of the flywheel installation shell; the fourth gear is installed on the first rotating shaft, and the fourth gear is meshed with the first gear; one end of the fifth rotating shaft is installed on the In the circular hole in the flywheel installation shell; the fifth gear is installed on one end of the fifth rotating shaft, and the fifth gear meshes with the fourth gear; one end of the flywheel has bevel teeth; the flywheel is installed on the other end of the fifth rotating shaft; the tenth The rotating shaft is installed on the lower side of the flywheel installation shell; one end of the tenth gear has bevel teeth; the tenth gear is installed on the tenth rotating shaft; the bevel teeth on the tenth gear mesh with the bevel teeth on the flywheel; when the drive motor works , the driving motor will drive the second shaft to rotate through the differential; the rotation of the second shaft drives the first gear to rotate; the rotation of the first gear drives the rotation of the fourth gear; the rotation of the fourth gear drives the rotation of the fifth gear; the rotation of the fifth gear drives The fifth shaft rotates; the rotation of the fifth shaft drives the rotation of the flywheel; the rotation of the flywheel drives the rotation of the tenth gear.

In the present invention, one end of the sixth rotating shaft passes through the escape hole on the flywheel mounting case and is located inside the flywheel mounting case; the other end of the sixth rotating shaft passes through the sixth shaft hole on the pipe mounting case and is connected with the other output shaft of the differential ; One side of the drive tooth has an arc surface; a drive tooth is respectively installed in the three sets of tooth sockets on the outer surface of the sixth rotating shaft, and each drive tooth is respectively installed between the corresponding tooth sockets. There is a compression spring; the inner circular surface of the rotating ring is evenly opened with a plurality of drive grooves in the circumferential direction; one end of the first drive plate has a circular notch; one side of the end of the first drive plate with a circular notch is installed. Rotating ring; the first driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; one end of the second driving plate has a circular notch; a rotating ring is installed on the side of the end of the second driving plate having the circular notch; the second The second driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; one end of the third driving plate has a circular notch; a rotating ring is installed in the middle of the end of the third driving plate with the circular notch; The corresponding rotating ring is installed on the sixth rotating shaft; the driving ring on the first driving plate, the driving ring on the second driving plate and the driving ring on the third driving plate cooperate with each other; the driving ring on the first driving plate, the driving ring on the second driving plate The drive ring on the second drive plate and the drive ring on the third drive plate are respectively matched with the three sets of drive teeth on the sixth shaft; the first drive plate, the second drive plate and the third drive plate are all located in the pipe installation shell in the mounting groove; the three seventh rotating shafts are respectively installed on one end of the first driving plate, the second driving plate and the third driving plate where the driving ring is not installed; the three rolling wheels are respectively installed on the three seventh rotating shafts; The three connecting structures are installed on the first driving board, the second driving board and the third driving board respectively, and the three connecting structures and the corresponding three rolling wheels are respectively located on the first driving board, the second driving board and the third driving board. The two sides of the board; the three arc-shaped telescopic centrifugal blocks are respectively installed on the sides of the three connecting structures, and the three arc-shaped telescopic centrifugal blocks form an acute angle with the corresponding connecting structure; the three arc-shaped telescopic centrifugal blocks are connected to the The tenth gear is coordinated; when the drive motor is working, the drive motor will drive the sixth shaft to rotate through the differential; the sixth shaft rotates through the driving teeth on the sixth shaft and the first drive plate, the second drive plate and the third drive plate. The drive plate corresponding to the drive groove on the rotating ring drives the first drive plate, the second drive plate and the third drive plate to rotate around the axis of the sixth rotating shaft; the first drive plate, the second drive plate and the third drive plate rotate around the axis of the sixth rotating shaft. The rotation of the axis of the sixth rotating shaft drives the three rolling wheels to rotate around the axis of the sixth rotating shaft; during the rotation of the three rolling wheels, the three rolling wheels will exert a driving force on the liquid in the conveying pipeline to make the liquid in the conveying pipeline The liquid flows; at the same time, the rotation of the first drive plate, the second drive plate and the third drive plate drives the corresponding three connecting structures to rotate around the axis of the sixth shaft; the rotation of the three connecting structures drives the three arc-shaped The telescopic centrifugal block rotates around the axis of the sixth rotating shaft.

In the present invention, one side of the driving teeth has an arc surface; when the driving teeth of the first driving plate, the second driving plate and the third driving plate on the sixth rotating shaft are connected with the first driving plate, the second driving plate and the third driving plate When the three drive plates rotate at a constant speed in cooperation with the corresponding drive slots on the rotating ring, the side that does not have an arc surface on the drive teeth drives the first drive plate, the second drive plate and the third drive plate to rotate; when the first drive When one of the plate, the second drive plate and the third drive plate accelerates suddenly, the drive groove on the accelerated drive plate will press the corresponding drive teeth to move into the corresponding tooth groove; when the accelerated drive When the drive slot on the plate moves to the other side of the corresponding drive tooth, another drive tooth adjacent to it will drive the drive slot; at this time, the gap between the drive plate and the adjacent drive plate The spacing will change; but the distance between the first drive plate, the second drive plate and the third drive plate will return to the original after the first drive plate, the second drive plate and the third drive plate are respectively accelerated once. state.

For the arc-shaped telescopic centrifugal block in the present invention, one end of the arc-shaped telescopic inner plate is installed in the arc-shaped telescopic jacket; two symmetrical tension spring; the arc-shaped telescopic inner plate cooperates with the tenth gear; during the rotation process of the three connecting structures, the three arc-shaped telescopic inner plates in the three arc-shaped telescopic centrifugal blocks will meet the tenth gear under centrifugal action. Gear contact; the three arc-shaped telescopic centrifugal blocks designed by the present invention form an acute angle with the corresponding connection structure; its function is to ensure the three connection structures during the rotation of the three arc-shaped telescopic centrifugal blocks driven by the three connection structures. The rotation can give the three arc-shaped telescopic centrifugal blocks a centrifugal force away from the axis of the sixth shaft; so that the three arc-shaped telescopic inner plates in the three arc-shaped telescopic centrifugal blocks can move out of the corresponding arc-shaped telescopic outer jacket under the action of centrifugal force ; In the present invention, the end surface of the side of the arc-shaped telescopic inner plate close to the tenth gear is tangent to the outer circular surface of the tenth gear; its function is to make the three arc-shaped telescopic inner plates contact the tenth gear under centrifugal action. The three arc-shaped telescopic inner plates maintain a larger contact area with the outer circular surface of the tenth gear; in the present invention, the end of the arc-shaped telescopic inner plate near the tenth gear has wavy teeth; its function is to ensure that the three arcs There is a larger friction between the three arc-shaped telescopic inner plates and the tenth gear after the three arc-shaped telescopic inner plates contact the tenth gear under centrifugal action; making the transmission between the three arc-shaped telescopic inner plates and the tenth gear more efficient Stablize. The conveying pipe in the present invention is a flexible pipe; its function is to make the process of the three rolling wheels pushing the liquid inside the conveying pipe to flow more smoothly. When the rotation speed of the sixth rotating shaft increases, the driving speed of the three rolling wheels to the conveying pipeline also increases; that is, the liquid flow speed in the conveying pipeline increases; at the same time, the rotation speed of the tenth gear also increases; that is, the tenth gear The driving speed of the three arc-shaped telescopic inner plates must also be increased; and the driving force of the tenth gear in the present invention to the three arc-shaped telescopic inner plates is determined by the centrifugal force and the corresponding tensile force of the three arc-shaped telescopic inner plates. The elastic force of the spring is determined; the centrifugal force received by the three arc-shaped telescopic inner plates is determined by the rotation speed of the sixth shaft; that is, when the rotation speed of the rolling wheel increases, the centrifugal force received by the three arc-shaped telescopic inner plates also follows increase; that is, the driving force of the tenth gear to the three arc-shaped telescopic inner plates is also increased; in this way, it can be ensured that when the liquid flow rate in the conveying pipeline increases, the gap between the three arc-shaped telescopic inner plates and the tenth gear There is sufficient driving force to drive the three arc-shaped telescopic inner panels to rotate.

In the present invention, during the high-speed rotation of the output shaft of the driving motor, because of the differential, most of the power transmitted by the driving motor will be absorbed by the flywheel; while the driving power on the transmitted rolling wheel is less; thus reducing the The use efficiency of the pump; therefore, the outer circular surface of the flywheel in the present invention has three centrifugal grooves evenly distributed in the circumferential direction; the three magnet blocks are respectively installed in the three centrifugal grooves; the three magnet blocks are located at one end of the centrifugal groove A return spring is respectively installed between the corresponding centrifugal groove; when the flywheel rotates at high speed, the three magnet blocks will move out of the corresponding centrifugal groove under centrifugal action; the three magnet blocks will be in contact with the installation during the moving process The arc-shaped iron blocks in the flywheel installation shell attract each other; the rotation of the flywheel generates resistance; the driving power transmitted by the drive motor to the flywheel is reduced through the resistance of the flywheel rotation; the use efficiency of the pump is improved.

In the present invention, there is liquid in the conveying pipeline; when people use the pump designed by the present invention; the drive motor switch is turned on to make the drive motor work; the work of the drive motor will make the differential work; the work of the differential will drive the sixth rotating shaft to rotate; the sixth On the one hand, the rotation of the rotating shaft drives the first driving plate, the second driving plate and the third driving plate to rotate around the axis of the sixth rotating shaft; the first driving plate, the second driving plate and the third driving plate rotate around the axis of the sixth rotating shaft Drive the three rolling wheels to rotate around the axis of the sixth rotating shaft; during the rotation of the three rolling wheels, the three rolling wheels will exert a driving force on the liquid in the delivery pipeline to make the liquid in the delivery pipeline flow; at the same time, the first drive The rotation of the plate, the second drive plate and the third drive plate around the axis of the sixth rotating shaft will drive the three connecting structures to rotate; the rotation of the three connecting structures will drive the three arc-shaped telescopic centrifugal blocks installed thereon to revolve around the sixth rotating shaft The rotation of the axis of the three arc-shaped telescopic centrifugal blocks will make the three arc-shaped telescopic inner plates of the three arc-shaped telescopic centrifugal blocks move out of the corresponding arc-shaped telescopic outer casing under the action of centrifugal force; on the other hand, the differential The device will drive the second shaft to rotate; the rotation of the second shaft will drive the first gear to rotate; the rotation of the first gear will drive the rotation of the fourth gear; the rotation of the fourth gear will drive the rotation of the fifth gear; the rotation of the fifth gear will drive the rotation of the fifth shaft; The rotation of the rotating shaft drives the flywheel to rotate; the rotation of the flywheel drives the tenth gear to rotate; because the three rolling wheels will exert a driving force on the liquid in the delivery pipeline during the rotation process; the delivery pipeline will give a resistance to the three rolling wheels; and the tenth gear The rotation of the differential is free from any resistance; that is, the resistance of the driving force transmitted to the three rolling wheels on the differential is greater than the resistance received by the tenth gear transmitted; so the speed of the tenth gear is greater than that of the three arcs The rotating speed of the telescopic inner plates; therefore, when the three arc-shaped telescopic inner plates move to contact with the tenth gear under the action of centrifugal force, the tenth gear will give one of the three arc-shaped telescopic inner plates A driving force of the board makes the rotation speed of the corresponding arc-shaped telescopic inner board instantly increase; and the instantaneous increase of the rotation speed of the arc-shaped telescopic inner board will instantly increase the rotation speed of the corresponding connecting structure; thus driving the corresponding rolling The rotation speed of the wheel increases instantaneously; and the rolling wheel corresponding to the arc-shaped telescopic inner plate is just in contact with the conveying pipeline at this time; during this process, one of the three rolling wheels just breaks away from the conveying pipeline; The area compressed by the corresponding rolling wheel on the conveying pipeline at the moment when the wheel is separated from the conveying pipeline will recover under the action of the elasticity of the conveying pipeline; but in the recovery process, the delivery volume of the liquid in the conveying pipeline will fluctuate; The instantaneous increase of the rotation speed of the rolling wheel in contact with the delivery pipeline will instantly increase the flow velocity of the liquid in the delivery pipeline; at this time, the instantaneous increase of the flow velocity of the liquid in the delivery pipeline will compensate for the occurrence of liquid delivery in the delivery pipeline. The fluctuation of the liquid in the pipeline keeps the volume of liquid delivered in the pipeline constant; the stability of the volume of liquid delivered in the pipeline is guaranteed.

Description of drawings

Figure 1 is a schematic diagram of the appearance of the overall components.

Figure 2 is a schematic diagram of the distribution of the overall components.

Fig. 3 is a schematic diagram of the internal structure of the integral part.

Fig. 4 is a schematic diagram of the internal structure distribution of the overall components.

Fig. 5 is a schematic diagram of the structure of the flywheel installation shell.

Figure 6 is a schematic diagram of the installation of the internal structure of the overall component.

Figure 7 is a schematic diagram of the installation of the flywheel.

Figure 8 is a schematic diagram of the flywheel structure.

Fig. 9 is a schematic diagram of the installation of the fifth gear.

Fig. 10 is a schematic diagram of connection structure installation.

Fig. 11 is a schematic diagram of the structure of the pipe installation shell.

Fig. 12 is a schematic diagram of the connection structure.

Figure 13 is a schematic diagram of the installation of arc-shaped telescopic centrifugal blocks.

Fig. 14 is a schematic diagram of cooperation between the rolling wheel and the conveying pipeline.

Figure 15 is a schematic diagram of the installation of the scroll wheel.

Figure 16 is a schematic diagram of the installation of the guide telescopic arc plate.

Fig. 17 is a schematic diagram of the installation of the first driving board.

Fig. 18 is a schematic structural diagram of the second driving board.

Fig. 19 is a schematic structural diagram of the third driving board.

Fig. 20 is a schematic diagram of the structure of the sixth rotating shaft.

Fig. 21 is a schematic diagram of the principle of liquid flow.

Fig. 22 is a structural schematic diagram of an arc-shaped telescopic centrifugal block.

Fig. 23 is a schematic diagram of the structure of the arc-shaped telescopic jacket.

Fig. 24 is a structural schematic diagram of an arc-shaped telescopic inner panel.

Label names in the figure: 1. Flywheel mounting shell; 2. Pipe mounting shell; 3. Differential; 4. Driving motor; 5. First support; 6. Second support; 7. Motor support; 8. Mounting plate; 9. First gear; 10. Connection structure; 11. Sixth shaft hole; 12. Arc-shaped iron block; 13. Magnet block; 14. Fourth gear; 15. Fifth gear; 16. Flywheel; 17. Arc Telescopic centrifugal block; 18, conveying pipe; 19, rolling wheel; 20, return spring; 21, centrifugal groove; 23, first rotating shaft; 24, second rotating shaft; 25, first driving plate; 26, second driving plate ; 27, the fifth rotating shaft; 28, the sixth rotating shaft; 29, the seventh rotating shaft; 30, guiding telescopic arc plate; 32, driving slot; 33, rotating ring; 34, escape hole; 35, the fourth shaft hole; The tenth gear; 37, the tenth rotating shaft; 38, the arc-shaped telescopic inner plate; 39, the tension spring; 40, the arc-shaped telescopic jacket; 41, the pump inlet pipe; 42, the pump outlet pipe; 43, the third drive plate; 46, installation slot; 47, delivery pipe installation slot; 49, drive tooth; 50, tooth slot; 51, compression spring; 52, drive mechanism; 53, pump mechanism.

Detailed ways

As shown in Figures 1 and 2, it includes a drive mechanism 52, a pump mechanism 53, and a mounting plate 8, wherein the drive mechanism 52 is installed on the mounting plate 8; the pump mechanism 53 is installed on the mounting plate 8; the drive mechanism 52 and the pump mechanism 53 Cooperate.

As shown in Figure 6, the drive mechanism 52 includes a flywheel mounting case 1, a differential 3, a drive motor 4, a second support 6, a motor support 7, a first gear 9, a differential 3, an arc-shaped iron block 12, Magnet block 13, return spring 20, centrifugal groove 21, fourth gear 14, fifth gear 15, flywheel 16, first rotating shaft 23, second rotating shaft 24, fifth rotating shaft 27, escape hole 34, fourth shaft hole 35 , the tenth gear 36, the tenth rotating shaft 37, wherein as shown in Figure 1, the driving motor 4 is installed on the upper side of the mounting plate 8 through the motor support 7; the differential 3 is installed on the upper side of the mounting plate 8 through the second support 6 ; As shown in Figure 3, the input shaft of differential 3 is connected with the rotating shaft of drive motor 4; One end of the second rotating shaft 24 is connected with an output shaft of differential 3; As shown in Figure 5, the flywheel mounting shell 1 Have avoidance hole 34 and the 4th axle hole 35 on one side surface; Flywheel mounting case 1 is installed on the upper side of mounting plate 8; The fourth shaft hole 35 is installed in the circular hole in the flywheel mounting shell 1; the first gear 9 is mounted on the other end of the second rotating shaft 24; the first rotating shaft 23 is installed on the inner side of the flywheel mounting shell 1; as shown in Figure 9 Shown, the fourth gear 14 is installed on the first rotating shaft 23, and the fourth gear 14 meshes with the first gear 9; one end of the fifth rotating shaft 27 is installed in the circular hole in the flywheel installation shell 1; the fifth gear 15 is installed At one end of the fifth rotating shaft 27, and the fifth gear 15 meshes with the fourth gear 14; as shown in Figure 8, there are three centrifugal grooves 21 evenly distributed in the circumferential direction on the outer circumference of the flywheel 16; three magnet blocks 13 Installed in three centrifugal grooves 21 respectively; a return spring 20 is respectively installed between one end of the three magnet blocks 13 located in the centrifugal groove 21 and the corresponding centrifugal groove 21; one end of the flywheel 16 has bevel teeth; the flywheel 16 Installed on the other end of the fifth rotating shaft 27; As shown in Figure 7, the tenth rotating shaft 37 is installed on the lower side in the flywheel installation shell 1; One end of the tenth gear 36 has bevel teeth; The tenth gear 36 is installed on the tenth On the rotating shaft 37; the bevel teeth on the tenth gear 36 mesh with the bevel teeth on the flywheel 16; as shown in Figure 3, the arc-shaped iron block 12 is installed on the upper end face in the flywheel installation shell 1; the arc-shaped iron block 12 respectively Cooperate with three magnet blocks 13.

As shown in Figure 10, the above-mentioned pump mechanism 53 includes the first support 5, the pipeline installation shell 2, the sixth shaft hole 11, the delivery pipeline 18, the rolling wheel 19, the seventh rotating shaft 29, the pump inlet pipe 41, the pump outlet pipe 42, The first drive plate 25, the connection structure 10, the guide telescopic arc plate 30, the arc telescopic centrifugal block 17, the sixth rotating shaft 28, the tooth groove 50, the second drive plate 26, the drive groove 32, the rotating ring 33, the third drive Plate 43, driving teeth 49, compression spring 51 installation groove 46, delivery pipeline installation groove 47, wherein as shown in Figure 11, pipeline installation shell 2 is U shape; One side of pipeline installation shell 2 has installation groove 46; The inner side of the installation shell 2 has a U-shaped delivery pipeline installation groove 47, and the delivery pipeline installation groove 47 cooperates with the installation groove 46; the other side of the pipeline installation shell 2 has a sixth shaft hole 11; as shown in Figure 1, the pipeline installation The shell 2 is installed on the upper side of the mounting plate 8 through the first support 5; the mounting groove 46 on the pipe mounting shell 2 cooperates with the escape hole 34 on the flywheel mounting shell 1; as shown in Figure 20, the outer circle of the sixth rotating shaft 28 There are three groups of tooth sockets 50 uniformly opened along the axial direction of the sixth rotating shaft 28 on the surface; the tooth sockets 50 in each group of tooth sockets 50 in the three groups of tooth sockets 50 are evenly distributed around the sixth rotating shaft 28 in the circumferential direction. One end of the sixth rotating shaft 28 passes through the escape hole 34 on the flywheel mounting shell 1 and is located inside the flywheel mounting shell 1; as shown in Figure 4, the other end of the sixth rotating shaft 28 passes through the pipe mounting shell 2 The sixth shaft hole 11 is connected with the other output shaft of the differential 3; as shown in Figure 20, one side of the driving tooth 49 has an arc surface; A drive tooth 49 is respectively installed in 50, and a compression spring 51 is respectively installed between each drive tooth 49 and corresponding tooth groove 50; A driving groove 32; As shown in Figure 18, one end of the first driving plate 25 has a circular notch; On the first driving plate 25, a rotating ring 33 is installed on the side of one end of the circular notch; the first driving plate 25 passes through The corresponding rotating ring 33 is mounted on the sixth rotating shaft 28; as shown in Figure 17, one end of the second driving plate 26 has a circular notch; a rotating ring is installed on the side of the second driving plate 26 with one end of the circular notch 33; the second driving plate 26 is installed on the sixth rotating shaft 28 through the corresponding rotating ring 33; as shown in Figure 19, one end of the third driving plate 43 has a circular notch; the third driving plate 43 has a circular notch at one end A rotating ring 33 is installed in the middle of the middle position; the third driving plate 43 is installed on the sixth rotating shaft 28 by the corresponding rotating ring 33; the driving ring on the first driving plate 25, the driving ring on the second driving plate 26 and the second driving plate The drive rings on the three drive plates 43 cooperate with each other; The driving teeth 49 cooperate; the first driving plate 25, the second driving plate 26 and the third driving plate 43 are all located in the pipe installation shell 2 As shown in Figure 16, between the first drive plate 25 and the second drive plate 26, between the second drive plate 26 and the third drive plate 43, between the third drive plate 43 and the first drive plate 25, a guiding telescopic arc plate 30 is installed respectively; One end of the ring; as shown in Figure 14, three rolling wheels 19 are installed on three seventh rotating shafts 29 respectively; As shown in Figure 13, three connection structures 10 are respectively installed on the first drive plate 25, the second drive plate 26 and the third drive plate 43, and the three connection structures 10 and the corresponding three scroll wheels 19 are located on both sides of the first drive plate 25, the second drive plate 26 and the third drive plate 43; as shown in Figure 12 As shown, the three arc-shaped telescopic centrifugal blocks 17 are installed on the sides of the three connecting structures 10 respectively, and the three arc-shaped telescopic centrifugal blocks 17 form an acute angle with the corresponding connecting structure 10; the three arc-shaped telescopic centrifugal blocks 17 cooperates with the tenth gear 36; as shown in Figure 10, the delivery pipeline 18 is installed in the delivery pipeline installation groove 47 in the pipeline installation shell 2; the delivery pipeline 18 cooperates with the three rolling wheels 19; the pump inlet pipe 41 and the pump outlet The pipes 42 are respectively installed on the two upper end surfaces of the U-shaped pipe installation shell 2; the pump inlet pipe 41 and the pump outlet pipe 42 communicate with the two ends of the delivery pipe 18 respectively.

As shown in Figure 22, the above-mentioned arc-shaped telescopic centrifugal block 17 includes an arc-shaped telescopic inner plate 38, a tension spring 39, and an arc-shaped telescopic overcoat 40, wherein as shown in Figure 23, one end of the arc-shaped telescopic inner plate 38 is installed on the As shown in Figure 24, two symmetrical extension springs 39 are installed between an end of the arc-shaped telescopic inner plate 38 and the arc-shaped telescopic overcoat 40 inside the arc-shaped telescopic overcoat 40.

The arc-shaped telescopic inner plate 38 cooperates with the tenth gear 36 ; the end surface of the arc-shaped telescopic inner plate 38 close to the tenth gear 36 is tangent to the outer circular surface of the tenth gear 36 .

The end of the arc-shaped telescopic inner plate 38 close to the tenth gear 36 has corrugated teeth.

The above-mentioned delivery pipeline 18 is a flexible pipe.

In summary:

In the present invention, the rotation speed of one of the rolling wheels 19 in the three rolling wheels 19 driving the delivery pipeline 18 is suddenly accelerated by the driving of the flywheel 16; thus, the delivery speed of the liquid in the delivery pipeline 18 is accelerated; The impact of the fluctuation of the delivery volume on the delivery of the liquid in the delivery pipeline 18.

Among the present invention, drive motor 4 is installed on the upper side of mounting plate 8 by motor support 7; Differential 3 is installed on the upper side of mounting plate 8 by second support 6; Connection; one end of the second rotating shaft 24 is connected with an output shaft of the differential 3; the flywheel mounting case 1 is installed on the upper side of the mounting plate 8; the other end of the second rotating shaft 24 passes through the fourth shaft on the flywheel mounting case 1 The hole 35 is installed in the circular hole in the flywheel mounting case 1; the first gear 9 is installed on the other end of the second rotating shaft 24; the first rotating shaft 23 is installed on the inner side of the flywheel mounting case 1; the fourth gear 14 is installed on the second On a rotating shaft 23, and the fourth gear 14 meshes with the first gear 9; one end of the fifth rotating shaft 27 is installed in the circular hole in the flywheel mounting case 1; the fifth gear 15 is installed on one end of the fifth rotating shaft 27, and The fifth gear 15 meshes with the fourth gear 14; one end of the flywheel 16 has bevel teeth; the flywheel 16 is installed on the other end of the fifth rotating shaft 27; the tenth rotating shaft 37 is installed on the lower side of the flywheel installation shell 1; the tenth gear One end of 36 has bevel teeth; the tenth gear 36 is installed on the tenth rotating shaft 37; the bevel teeth on the tenth gear 36 mesh with the bevel teeth on the flywheel 16; when the drive motor 4 is working, the drive motor 4 will pass the differential speed The device 3 drives the second shaft 24 to rotate; the rotation of the second shaft 24 drives the first gear 9 to rotate; the rotation of the first gear 9 drives the fourth gear 14 to rotate; the rotation of the fourth gear 14 drives the rotation of the fifth gear 15; the rotation of the fifth gear 15 The fifth rotating shaft 27 is driven to rotate; the fifth rotating shaft 27 rotates to drive the flywheel 16 to rotate; the flywheel 16 rotates to drive the tenth gear 36 to rotate.

In the present invention, one end of the sixth rotating shaft 28 passes through the escape hole 34 on the flywheel mounting case 1 and is located inside the flywheel mounting case 1; the other end of the sixth rotating shaft 28 passes through the sixth shaft hole 11 on the pipeline mounting case 2 and the The other output shaft of the device 3 is connected; one side of the drive tooth 49 has an arc surface; a drive tooth 49 is respectively installed in the three groups of tooth grooves 50 on the outer circumference of the sixth rotating shaft 28, and each drive A compression spring 51 is respectively installed between the tooth 49 and the corresponding tooth socket 50; the inner circular surface of the rotating ring 33 is evenly opened with a plurality of driving slots 32 in the upper direction; one end of the first driving plate 25 has a circular Notch; there is a rotating ring 33 installed on the side of one end of the circular notch on the first driving plate 25; the first driving plate 25 is installed on the sixth rotating shaft 28 by the corresponding rotating ring 33; one end of the second driving plate 26 has Circular notch; There is a rotating ring 33 installed on the side of one end of the circular notch on the second driving plate 26; The second driving plate 26 is installed on the sixth rotating shaft 28 by the corresponding rotating ring 33; The third driving plate 43 There is a circular notch at one end; a rotating ring 33 is installed at the middle position of one end with a circular notch on the third driving plate 43; the third driving plate 43 is installed on the sixth rotating shaft 28 through the corresponding rotating ring 33; the first driving plate The drive ring on the 25, the drive ring on the second drive plate 26 and the drive ring on the third drive plate 43 cooperate with each other; the drive ring on the first drive plate 25, the drive ring on the second drive plate 26 and the third drive ring The driving rings on the driving plate 43 respectively cooperate with the three groups of driving teeth 49 on the sixth rotating shaft 28; 46; three seventh rotating shafts 29 are respectively installed on the first driving plate 25, the second driving plate 26 and the third driving plate 43 without an end of the drive ring; three rolling wheels 19 are respectively installed on the three seventh On the rotating shaft 29; three connection structures 10 are installed on the first drive plate 25, the second drive plate 26 and the third drive plate 43 respectively, and the three connection structures 10 and the corresponding three scroll wheels 19 are respectively located on the first drive plate plate 25, the two sides of the second drive plate 26 and the third drive plate 43; three arc-shaped telescopic centrifugal blocks 17 are respectively installed on the sides of the three connection structures 10, and the three arc-shaped telescopic centrifugal blocks 17 are connected with the corresponding The structures 10 form an included angle at an acute angle; three arc-shaped telescopic centrifugal blocks 17 cooperate with the tenth gear 36; when the driving motor 4 is working, the driving motor 4 will drive the sixth rotating shaft 28 to rotate through the differential 3; the sixth rotating shaft 28 rotates and drives the first drive plate 25, the second drive plate 25, the second drive plate 43 through the drive teeth 49 on the sixth rotating shaft 28 and the first drive plate 25, the second drive plate 26 and the drive groove 32 on the third drive plate 43 corresponding to the drive groove 32. Two drive plates 26 and the third drive plate 43 rotate around the axis of the sixth rotating shaft 28; Wheel 19 rotates around the axis of the sixth rotating shaft 28; During the rotation, the three rolling wheels 19 will apply a driving force to the liquid in the delivery pipe 18 to make the liquid in the delivery pipe 18 flow; at the same time, the first drive plate 25, the second drive plate 26 and the third drive plate 43 rotate to drive The corresponding three connecting structures 10 rotate around the axis of the sixth rotating shaft 28 ; the rotation of the three connecting structures 10 drives the three arc-shaped telescopic centrifugal blocks 17 installed thereon to rotate around the axis of the sixth rotating shaft 28 .

One side of driving teeth 49 has an arc-shaped surface among the present invention; 1. When the second drive plate 26 and the third drive plate 43 rotate at a constant speed in cooperation with the drive groove 32 on the corresponding rotating ring 33, the side that does not have an arc surface on the drive teeth 49 drives the first drive plate 25, the second The drive plate 26 and the third drive plate 43 rotate; when one of the first drive plate 25, the second drive plate 26 and the third drive plate 43 accelerates suddenly, the drive groove 32 on the accelerated drive plate will press the corresponding Drive tooth 49 makes it move in the tooth groove 50 corresponding thereto; Just will play a driving effect to this drive groove 32; Now the spacing between this drive plate and the adjacent drive plate will change; But the first drive plate 25, the second drive plate 26 and the 3rd drive plate 43 respectively The distance between the first driving plate 25, the second driving plate 26 and the third driving plate 43 will return to the original state after one acceleration.

For the arc-shaped telescopic centrifugal block 17 in the present invention, one end of the arc-shaped telescopic inner plate 38 is installed in the arc-shaped telescopic overcoat 40; Two symmetrical tension springs 39 are installed between them; the arc-shaped telescopic inner plate 38 cooperates with the tenth gear 36; during the rotation of the three connecting structures 10, the three arc-shaped telescopic centrifugal blocks 17 The telescopic inner plate 38 will be in contact with the tenth gear 36 under centrifugal action; the three arc-shaped telescopic centrifugal blocks 17 designed by the present invention form an acute angle with the corresponding connecting structure 10; its function is to ensure that the three connecting structures 10 The rotation of the three connecting structures 10 during the rotation of the three arc-shaped telescopic centrifugal blocks 17 can give the three arc-shaped telescopic centrifugal blocks 17 a centrifugal force away from the axis of the sixth rotating shaft 28; making the three arc-shaped telescopic centrifugal blocks 17 The three arc-shaped telescopic inner plates 38 can move out of the corresponding arc-shaped telescopic outer cover 40 under the action of centrifugal force; The circular surfaces are tangent; its function is to make the three arc-shaped telescopic inner plates 38 contact with the tenth gear 36 under the centrifugal action and maintain a larger distance between the three arc-shaped telescopic inner plates 38 and the outer circular surface of the tenth gear 36. Contact area; among the present invention, the arc-shaped telescopic inner plate 38 has wavy teeth at one end close to the tenth gear 36; There is a relatively large frictional force between the arc-shaped telescopic inner plates 38 and the tenth gear 36 ; this makes the transmission between the three arc-shaped telescopic inner plates 38 and the tenth gear 36 more stable. The conveying pipe 18 in the present invention is a flexible pipe; its function is to make the process of the three rolling wheels 19 pushing the liquid inside the conveying pipe 18 to flow more smoothly. When the rotation speed of the sixth rotating shaft 28 is increased, the driving speed of the three rolling wheels 19 to the delivery pipeline 18 is also increased; that is, the liquid flow rate in the delivery pipeline 18 is increased; simultaneously, the rotation speed of the tenth gear 36 is also increased. Promptly the tenth gear 36 also must strengthen to the driving speed of three arc-shaped telescopic inner plates 38; The centrifugal force received by the plate 38 is determined by the elastic force of the corresponding tension spring 39; and the centrifugal force received by the three arc-shaped telescopic inner plates 38 is determined by the rotation speed of the sixth rotating shaft 28; that is, when the rotation speed of the scroll wheel 19 increases The centrifugal force suffered by the three arc-shaped telescopic inner plates 38 is also increased; that is, the driving force of the tenth gear 36 to the three arc-shaped telescopic inner plates 38 is also increased; When the speed increases, there can be enough driving force between the three arc-shaped telescopic inner plates 38 and the tenth gear 36 to drive the three arc-shaped telescopic inner plates 38 to rotate.

In the present invention, during the high-speed rotation of the output shaft of the driving motor 4, because of the differential 3, most of the power delivered by the driving motor 4 will be absorbed by the flywheel 16; and the driving power on the rolling wheel 19 transmitted is less ; This reduces the service efficiency of the pump; so there are three centrifugal grooves 21 evenly distributed in the circumferential direction on the outer circular surface of the flywheel 16 among the present invention; three magnet blocks 13 are installed in three centrifugal grooves 21 respectively; A return spring 20 is respectively installed between one end in the centrifugal groove 21 and the corresponding centrifugal groove 21 on the magnet block 13; when the flywheel 16 rotates at a high speed, the three magnet blocks 13 will move out of the corresponding Centrifugal groove 21; three magnet blocks 13 will attract each other with the arc-shaped iron block 12 installed in the flywheel installation shell 1 during the moving process; make the rotation of flywheel 16 generate resistance; reduce the resistance suffered by the rotation of flywheel 16 The drive power delivered by the drive motor 4 to the flywheel 16 improves the efficiency of the pump.

The specific embodiment: there is liquid in the delivery pipeline 18; when people use the pump designed by the present invention; open the drive motor 4 switch to make the drive motor 4 work; the drive motor 4 work will make the differential 3 work; the differential 3 work will drive The sixth rotating shaft 28 rotates; the sixth rotating shaft 28 rotates and on the one hand drives the first driving plate 25, the second driving plate 26 and the third driving plate 43 to rotate around the axis of the sixth rotating shaft 28; the first driving plate 25, the second driving plate Plate 26 and the third driving plate 43 rotate around the axis of the sixth rotating shaft 28 and drive three scroll wheels 19 to rotate around the axis of the sixth rotating shaft 28; The liquid in the delivery pipeline 18 exerts a driving force to make the liquid in the delivery pipeline 18 flow; at the same time, the rotation of the first drive plate 25, the second drive plate 26 and the third drive plate 43 around the axis of the sixth rotating shaft 28 will drive three The connecting structure 10 rotates; the rotation of the three connecting structures 10 drives the three arc-shaped telescopic centrifugal blocks 17 mounted thereon to rotate around the axis of the sixth rotating shaft 28; the rotation of the three arc-shaped telescopic centrifugal blocks 17 will make the three arc-shaped telescopic centrifugal blocks 17 rotate The three arc-shaped telescopic inner plates 38 in the telescopic centrifugal block 17 move out of the corresponding arc-shaped telescopic overcoat 40 outside under the action of centrifugal force; on the other hand, the differential 3 will drive the second rotating shaft 24 to rotate; Drive the first gear 9 to rotate; the rotation of the first gear 9 drives the fourth gear 14 to rotate; the rotation of the fourth gear 14 drives the rotation of the fifth gear 15; the rotation of the fifth gear 15 drives the rotation of the fifth shaft 27; the rotation of the fifth shaft 27 drives the flywheel 16 rotates; Flywheel 16 rotates and drives the tenth gear 36 to rotate; Because three rolling wheels 19 can apply a driving force to the liquid in the delivery pipeline 18 during rotation; Delivery pipeline 18 can give three rolling wheels 19 a resistance; And The rotation of the tenth gear 36 is free from any resistance; that is, the resistance of the driving force transmitted to the three rolling wheels 19 on the differential 3 is greater than the resistance received on the tenth gear 36 transmitted; so the tenth gear The rotating speed of 36 is greater than the rotating speed of three arc-shaped telescopic inner plates 38; so when the three arc-shaped telescopic inner plates 38 move to contact with the tenth gear 36 under centrifugal force, the tenth gear 36 will give three arcs. A driving force of one of the arc-shaped telescopic inner panels 38 in the arc-shaped telescopic inner panels 38 makes the rotation speed of the corresponding arc-shaped telescopic inner panel 38 increase instantaneously; The rotation speed of the corresponding connection structure 10 increases instantaneously; and then drives the rotation speed of the corresponding scroll wheel 19 to increase instantaneously; and the scroll wheel 19 corresponding to the arc-shaped telescopic inner plate 38 is just in contact with the conveying pipeline 18 at this moment; In the process, one of the rolling wheels 19 just breaks away from the delivery pipeline 18 in the three rolling wheels 19; It will be restored under the action of; as shown in Figure 21, but in the recovery process, there will be fluctuations in the delivery volume of the liquid in the delivery pipeline 18 But at this time, the instantaneous increase of the rolling wheel 19 rotation speed in contact with the delivery pipeline 18 will make the flow velocity of the liquid in the delivery pipeline 18 also increase instantly; Larger to compensate for fluctuations in the liquid delivery volume in the delivery pipeline 18; to keep the liquid delivery volume in the delivery pipeline 18 unchanged; to ensure the stability of the liquid delivery volume in the delivery pipeline 18.

Claims (5)

1. A peristaltic pump based on a differential, characterized in that: it comprises a drive mechanism, a pump mechanism, and a mounting plate, wherein the drive mechanism is mounted on the mounting plate; the pump mechanism is mounted on the mounting plate; the drive mechanism and the pump mechanism cooperate ; The above-mentioned drive mechanism includes a flywheel mounting case, a differential, a drive motor, a second support, a motor support, a first gear, an arc-shaped iron block, a magnet block, a return spring, a centrifugal groove, a fourth gear, a fifth gear, and a flywheel , the first rotating shaft, the second rotating shaft, the fifth rotating shaft, the escape hole, the fourth shaft hole, the tenth gear, and the tenth rotating shaft, wherein the drive motor is installed on the upper side of the mounting plate through the motor support; the differential is installed through the second support On the upper side of the mounting plate; the input shaft of the differential is connected to the rotating shaft of the drive motor; one end of the second rotating shaft is connected to an output shaft of the differential; one side of the flywheel mounting shell has an avoidance hole and a fourth shaft hole; the flywheel mounting shell is installed on the upper side of the mounting plate; the other end of the second rotating shaft passes through the fourth shaft hole on the flywheel mounting shell and is installed in the circular hole in the flywheel mounting shell; the first gear is mounted on the second The other end of the rotating shaft; the first rotating shaft is installed on the inner side of the flywheel installation shell; the fourth gear is installed on the first rotating shaft, and the fourth gear meshes with the first gear; one end of the fifth rotating shaft is installed on the circle in the flywheel mounting shell The fifth gear is installed at one end of the fifth rotating shaft, and the fifth gear meshes with the fourth gear; there are three centrifugal grooves evenly distributed in the circumferential direction on the outer surface of the flywheel; the three magnet blocks are respectively installed on the three In a centrifugal groove; on the three magnet blocks, a return spring is installed between one end in the centrifugal groove and the corresponding centrifugal groove; one end of the flywheel has bevel teeth; the flywheel is installed on the other end of the fifth rotating shaft; The rotating shaft is installed on the lower side of the flywheel installation shell; one end of the tenth gear has bevel teeth; the tenth gear is installed on the tenth rotating shaft; the bevel teeth on the tenth gear mesh with the bevel teeth on the flywheel; the arc-shaped iron block Installed on the upper end surface of the flywheel installation shell; the arc-shaped iron blocks are respectively matched with three magnet blocks; The above-mentioned pump mechanism includes the first support, the pipe installation shell, the sixth shaft hole, the conveying pipe, the rolling wheel, the seventh rotating shaft, the pump inlet pipe, the pump outlet pipe, the first driving plate, the guide telescopic arc plate, the connection structure, the arc Telescopic centrifugal block, sixth rotating shaft, tooth slot, second drive plate, drive groove, rotating ring, third drive plate, drive teeth, compression spring installation groove, delivery pipeline installation groove, wherein the pipeline installation shell is U-shaped; There is an installation groove on one side of the pipeline installation shell; the inner side of the pipeline installation shell has a U-shaped transmission pipeline installation groove, and the transmission pipeline installation groove is matched with the installation groove; the other side of the pipeline installation shell has a sixth shaft hole; the pipeline installation The shell is installed on the upper side of the mounting plate through the first support; the mounting groove on the pipe mounting shell is matched with the escape hole on the flywheel mounting shell; A set of tooth alveoli; the tooth alveoli in each set of tooth alveoli in the three groups of tooth alveoli are evenly distributed in the circumferential direction on the outer circular surface of the sixth rotating shaft; one end of the sixth rotating shaft passes through the escape hole on the flywheel mounting shell Located inside the flywheel mounting case; the other end of the sixth shaft passes through the sixth shaft hole on the pipe mounting case to connect with the other output shaft of the differential; one side of the drive teeth has an arc surface; the sixth shaft has an outer circle A driving tooth is respectively installed in the three groups of tooth sockets on the surface, and a compression spring is respectively installed between each driving tooth and the corresponding tooth socket; the inner circular surface of the rotating ring is evenly opened There are multiple driving slots; one end of the first driving plate has a circular notch; a rotating ring is installed on the side of the end of the first driving plate with the circular notch; the first driving plate is installed on the sixth rotating shaft through the corresponding rotating ring On; one end of the second drive plate has a circular notch; a rotating ring is installed on one side of the end of the second driving plate having the circular notch; the second driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; the third One end of the driving plate has a circular notch; a rotating ring is installed in the middle of the end of the third driving plate with the circular notch; the third driving plate is installed on the sixth rotating shaft through the corresponding rotating ring; The drive ring, the drive ring on the second drive plate and the drive ring on the third drive plate cooperate with each other; the drive ring on the first drive plate, the drive ring on the second drive plate and the drive ring on the third drive plate respectively Cooperate with the three sets of driving teeth on the sixth rotating shaft; the first driving plate, the second driving plate and the third driving plate are all located in the installation grooves in the pipe installation shell; between the first driving plate and the second driving plate, Between the second drive plate and the third drive plate, between the third drive plate and the first drive plate, a guide telescopic arc plate is respectively installed; three seventh rotating shafts are respectively installed on the first drive plate, the second drive plate and the The end of the drive ring is not installed on the third drive plate; the three scroll wheels are respectively installed on the three seventh rotating shafts; the three connecting structures are respectively installed on the first drive plate, the second drive plate and the third drive plate, And the three connection structures and the corresponding three rolling wheels are respectively located on both sides of the first drive plate, the second drive plate and the third drive plate; the three arc-shaped telescopic centrifugal blocks are respectively installed on the sides of the three connection structures, and Three arc-shaped telescopic centrifugal blocks and corresponding connecting knots There is an acute angle between the structures; three arc-shaped telescopic centrifugal blocks cooperate with the tenth gear; the delivery pipeline is installed in the delivery pipeline installation groove in the pipeline installation shell; the delivery pipeline is matched with three rolling wheels; the pump inlet pipe and the pump The outlet pipes are respectively installed on the two upper end surfaces of the U-shaped pipe installation shell; the pump inlet pipe and the pump outlet pipe communicate with the two ends of the delivery pipe respectively. 2. A peristaltic pump based on a differential according to claim 1, wherein the above-mentioned arc-shaped telescopic centrifugal block includes an arc-shaped telescopic inner plate, a tension spring, and an arc-shaped telescopic jacket, wherein the arc-shaped telescopic inner One end of the board is installed in the arc-shaped telescopic jacket; two symmetrical tension springs are installed between the end of the arc-shaped telescopic inner plate located inside the arc-shaped telescopic jacket and the arc-shaped telescopic jacket. 3. A differential-based peristaltic pump according to claim 2, characterized in that: the arc-shaped telescopic inner plate cooperates with the tenth gear; the end surface of the arc-shaped telescopic inner plate close to the tenth gear and The outer circular surface of the tenth gear is tangent. 4. A differential-based peristaltic pump according to claim 2, characterized in that: the end of the arc-shaped telescopic inner plate close to the tenth gear has wavy teeth. 5. A differential-based peristaltic pump according to claim 1, characterized in that the delivery pipeline is a flexible tube.