CN211132456U

CN211132456U - Peristaltic extrusion pump for infusion tube

Info

Publication number: CN211132456U
Application number: CN201920993830.7U
Authority: CN
Inventors: 谢遨儒; 黄汉东; 沈雅; 谢斌
Original assignee: Guangzhou Portable Medical Technology Co ltd
Current assignee: Guangzhou Portable Medical Technology Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-07-31
Anticipated expiration: 2029-06-28

Abstract

The utility model relates to a peristaltic extrusion pump for a transfusion tube, which comprises a rotating component, an extrusion component arranged on the rotating component and a shell; the extrusion component and the rotating component are both positioned in the shell, and an extrusion channel for laying the infusion tube is arranged between the rotating component and the shell; the rotating assembly comprises a first rotating disc, a second rotating disc and a rotating shaft for connecting the first rotating disc and the second rotating disc; the extrusion assembly comprises an elastic arm rotatably arranged between the first rotating disc and the second rotating disc, an extrusion wheel rotatably arranged on the elastic arm and a spring; the elastic arm and the extrusion wheel are located on the circumferential side face of the rotating shaft, one end of the spring is connected with the circumferential side face of the rotating shaft, the other end of the spring is connected with the elastic arm, the elastic arm is provided with a first limiting elastic block and a second limiting elastic block, the first limiting elastic block and the second limiting elastic block are located in the extrusion channel, and a gap through which an infusion tube passes exists between the first limiting elastic block and the second limiting elastic block. The utility model discloses can improve infusion velocity of flow precision.

Description

Peristaltic extrusion pump for infusion tube

Technical Field

The utility model relates to a technical field of extrusion pump especially relates to a transfer line wriggling extrusion pump.

Background

The infusion pump is an infusion auxiliary device, and the existing infusion auxiliary device mainly comprises a control system, a motor driving unit, a peristaltic extrusion mechanism, a detection device, an alarm device, an input and display device, a shell, a supporting structure of the shell and a software component. The peristaltic extrusion structure converts the rotation of the motor into the linear reciprocating motion of the pump sheet or the circular motion of the roller, and the roller or the pump sheet pushes the liquid in the infusion pipeline to flow directionally. The peristaltic pump utilizes a pump sheet or a roller to extrude the infusion tube, so that the liquid in the infusion tube forms the pressure of forward delivery; the liquid in the liquid bag is sucked by utilizing the rebound deformation of the liquid conveying pipe. Infusion pumps need to meet specific infusion flow rate accuracy to ensure their effectiveness. The precision of the infusion flow rate can affect the nursing workload of nurses, the treatment effect and even the life safety of patients.

The current problem is that: the resilience of the infusion pipeline can be gradually reduced after long-time infusion, and the liquid suction capacity of the pipeline is affected. The infusion tube is made of high polymer materials and has the characteristics of creep deformation and relaxation, and under the normal condition, along with the lengthening of the extruded time of the infusion tube, the rebound capability of the infusion tube is gradually reduced, the volume of liquid sucked by the pipeline is smaller and smaller, and the accuracy of the infusion flow rate is seriously influenced. A small part of manufacturers reduce the elastic reduction degree of the pipeline as much as possible by matching a special high-elasticity infusion tube with the infusion pump, so that the accuracy of the infusion flow rate is ensured, but the use cost of the product is improved; most manufacturers prefer to sacrifice the precision of the infusion flow rate, so that the infusion pump can be suitable for various infusion tubes to facilitate the popularization of products, but the risk of overlarge error of the infusion flow rate is brought.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the prior art, the utility model aims at: the utility model provides an transfer line wriggling extrusion pump, this transfer line wriggling extrusion pump structure is exquisite, each structure divides the worker rationally, the cost is lower, assist the transfer line to kick-back through increasing first spacing resilience piece and the spacing resilience piece of second, first spacing resilience piece and the spacing resilience piece of second are fixed in on the elastic arm, rotate with first carousel and second carousel constant speed, the transfer line can get into the clearance between first spacing resilience piece and the spacing resilience piece of second after the extrusion of gyro wheel, in the space of injecing between first spacing resilience piece and the spacing resilience piece of second, the cross-section of transfer line can resume it be close circular shape state, guarantee like this that the inspiratory liquid volume at every turn is stable unchangeable in long-time infusion, thereby improve the infusion velocity of flow precision.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a peristaltic extrusion pump for an infusion tube comprises a rotating component, an extrusion component arranged on the rotating component and a shell; the extrusion component and the rotating component are both positioned in the shell, the rotating component is rotatably installed in the shell, and an extrusion channel for laying an infusion tube is arranged between the rotating component and the shell.

The rotating assembly comprises a first rotating disc, a second rotating disc and a rotating shaft for connecting the first rotating disc and the second rotating disc; the extrusion assembly comprises an elastic arm rotatably arranged between the first rotating disc and the second rotating disc, an extrusion wheel rotatably arranged on the elastic arm and a spring; the both ends of axis of rotation respectively with first carousel, second carousel fixed connection, the axis direction of extrusion wheel is the same with the axis direction of axis of rotation, the bullet arm, the extrusion wheel, the spring all is located the circumference side of axis of rotation, the one end of spring and the circumference side fixed connection of axis of rotation, the other end and the bullet arm fixed connection of spring, be equipped with the spacing resilience piece of first spacing resilience piece and the spacing resilience piece of second that is used for supplementary transfer line resilience on the bullet arm, first spacing resilience piece and the spacing resilience piece of second all are located the extrusion passageway, there is the clearance that is used for passing between the spacing resilience piece of first spacing resilience piece and the spacing resilience piece of second. The infusion tube is extruded by the extrusion wheel and then rebounded through the first limiting rebounding block and the second limiting rebounding block, and the extrusion wheel, the first limiting rebounding block and the second limiting rebounding block alternately act on the infusion tube. Drive first rotating disk and second rotating disk rotation in the time of the axis of rotation pivoted, thereby it rotates to drive extrusion subassembly, extrusion subassembly can the rotation along the extrusion wheel of the circumference side pivoted process extrusion subassembly of axis of rotation, extrusion wheel autogyration can be continuous extrudees the transfer line and assists the infusion, the transfer line can warp after receiving the extrusion, its cross section can resume to be close circularly when receiving extrusion flat transfer line through between first spacing rebound piece and the spacing rebound piece of second, it kick-backs to assist the transfer line through first spacing rebound piece and the spacing rebound piece of second, ensure that the liquid volume of at every turn inspiratory in long-time infusion is stable unchangeable, thereby improve infusion flow rate precision.

Further, the method comprises the following steps: be fixed with first straight axle between first rotating disk and the second rotating disk, the bullet arm rotary type is installed on first straight axle, all is equipped with logical groove on first rotating disk and the second rotating disk, and the both sides of bullet arm all are equipped with the lug, and the lug of bullet arm both sides is located logical groove of first rotating disk and the logical inslot of second rotating disk respectively, is fixed with the second straight axle between the lug of bullet arm both sides, and the extrusion wheel rotary type is installed on the second straight axle. The lug is located logical inslot and makes the outline of extrusion wheel keep unanimous with the outline of first rolling disc, second rolling disc all the time to it is more steady to rotate when making the indirect extrusion of driving extrusion wheel of axis of rotation.

Further, the method comprises the following steps: and a rolling bearing is arranged in the extrusion wheel and sleeved on the second straight shaft. So that the extrusion wheel can rotate more smoothly.

Further, the method comprises the following steps: the circumference side of the rotating shaft is provided with a round hole, the elastic arm is provided with a groove, a positioning column is arranged in the groove, one end of the spring penetrates into the round hole and is fixed on the rotating shaft, and the other end of the spring is fixed in the groove and is sleeved on the positioning column. The spring makes the extrusion wheel on the arm of bullet keep comparatively invariable extrusion force to the transfer line all the time, and the spring possesses certain deformation stroke, and in this deformation stroke, the spring keeps comparatively stable elasticity to the arm of bullet, and this makes when extrusion wheel is at certain distance within range to the shell inner wall, and comparatively stable extrusion force can be applyed to the transfer line to the extrusion wheel to make this structure can adapt to the transfer line of different thickness.

Further, the method comprises the following steps: the extrusion subassembly has a plurality ofly, and a plurality of extrusion subassembly is along the circumferencial direction evenly distributed of axis of rotation. The extrusion force on the infusion tube can be kept all the time, so that the infusion tube is continuously extruded by the extrusion wheel.

Further, the method comprises the following steps: the shell comprises a semicircular arc plate and two straight plates; the two straight plates are respectively connected and tangent with the two ends of the semicircular arc plate, the shell is U-shaped, the infusion tube is laid in the extrusion channel between the inner wall of the circular arc plate and the extrusion wheel, and the inner wall of the circular arc plate and the extrusion wheel positioned in the extrusion channel are respectively contacted with the two ends of the outer wall of the infusion tube. When the infusion tube is installed, the infusion tube enters from the joint of one straight plate and the semi-circular arc plate and then penetrates out from the joint of the other straight plate and the semi-circular arc plate.

Further, the method comprises the following steps: the width of the gap between the first limit rebound block and the second limit rebound block is less than or equal to the diameter of the infusion tube. The rebound effect of the infusion tube is better, and better accuracy of the infusion flow speed is ensured.

Further, the method comprises the following steps: still be equipped with the pipe laying breach on the first rotating disk, first spacing resilience piece, the spacing resilience piece of second, second rotating disk are arranged along the axis direction of axis of rotation in proper order, and the pipe laying breach is located and extrudes directly over between wheel and the first spacing resilience piece, and the pipe laying breach is C shape. The pipe laying notch can assist the infusion pipe to be installed into the extrusion channel, so that the infusion pipe is easier to install.

Further, the method comprises the following steps: the first limit rebound block is provided with an inclined plane for guiding the infusion tube to enter a gap between the first limit rebound block and the second limit rebound block. When the infusion tube penetrates into the extrusion channel from the auxiliary notch, the inclined surface can guide the infusion tube to enter the extrusion channel from a gap between the first limit rebound block and the second limit rebound block.

Further, the method comprises the following steps: the second rotating disc is provided with a through hole, the end face of the rotating shaft is provided with a driving hole, and the through hole is communicated with the driving hole. The drive hole can be connected with the output of external drive spare, thereby the output shaft of external drive spare pierces into the drive hole and drives the runner assembly and rotate.

In general, the utility model has the advantages as follows:

this transfer line wriggling squeeze pump is through increasing the spacing resilience piece of first spacing resilience piece and second and assist the transfer line and kick-back, ensures that the liquid volume of inhaling at every turn is stable unchangeable in long-time infusion to improve the infusion velocity of flow precision. The extrusion force that a plurality of extrusion subassembly can let the transfer line receive keeps always for the transfer line constantly receives the extrusion of extrusion wheel, and the spring makes the extrusion wheel of bullet arm keep the extrusion force to the transfer line all the time, plays the arm and has certain activity space, can adapt to the transfer line of different brands, model, wall thickness. The pipe laying notch can assist the infusion pipe to be installed into the extrusion channel, so that the infusion pipe is easier to install. The utility model converts the rotation of the motor into the circular motion of the rotating component, and pushes the liquid in the infusion pipeline to flow directionally through the rotation of the extrusion wheel. The peristaltic extrusion pump for the infusion tube utilizes the pump sheet or the roller to extrude the infusion tube, so that liquid in the infusion tube forms forward conveying pressure, utilizes the rebound deformation of the infusion tube and the first limit rebound block and the second limit rebound block to assist the rebound of the infusion tube to form negative pressure in the infusion tube, and utilizes the negative pressure to continuously suck the liquid in the liquid bag into the infusion tube and finally convey the liquid to the infusion part of a patient. The utility model discloses simple structure, simple to operate can avoid as far as possible under the condition of lower cost because the resilience ability that the elasticity decline degree of transfer line pipeline caused can descend gradually, the pipeline inhales the volume of liquid and can be more and more littleer, seriously influence infusion velocity of flow precision scheduling problem, has guaranteed infusion velocity of flow precision.

Drawings

Fig. 1 is a front view of a peristaltic squeeze pump for an infusion tube.

Fig. 2 is a structural schematic diagram of the peristaltic extrusion pump of the infusion tube.

Fig. 3 is a schematic view of the structure of the rotating assembly and the compressing assembly.

Fig. 4 is a schematic view of the structure of the rotating assembly and an exploded view of the compressing assembly.

Fig. 5 is a schematic structural diagram of the rotating assembly, the spring, the elastic arm and the pressing wheel.

Fig. 6 is a schematic structural diagram of the elastic arm, the first limit resilient block, the second limit resilient block and the second straight shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

To facilitate a uniform view of the various reference numbers within the drawings, reference numbers appearing in the drawings are now described collectively as follows:

1 is the runner assembly, 2 is the extrusion subassembly, 3 is the shell, 4 is the extrusion passageway, 5 is first rotary disk, 6 is the second rotary disk, 7 is the axis of rotation, 8 is the bullet arm, 9 is the extrusion wheel, 10 is the spring, 11 is first spacing resilience piece, 12 is the spacing resilience piece of second, 13 is the dustproof packing ring, 14 is first straight axle, 15 is logical groove, 16 is the lug, 17 is the second straight axle, 18 is antifriction bearing, 19 is the round hole, 20 is the recess, 21 is the reference column, 22 is the pipe laying breach, 23 is the inclined plane, 24 is the through-hole, 25 is the drive hole, 26 is the semicircle board, 27 is the straight board, 28 is the chamfer.

Referring to fig. 1, 2 and 3, a peristaltic squeeze pump for an infusion tube comprises a rotating assembly, a squeezing assembly mounted on the rotating assembly, and a housing; extrusion subassembly and runner assembly all are located the shell and the runner assembly rotary type is installed in the shell, and extrusion subassembly installs on runner assembly's circumference side, and extrusion subassembly rotates round runner assembly's center of rotation, and the runner assembly rotary type is installed in the shell, and shell and runner assembly, extrusion subassembly all do not contact. The infusion tube is laid along the inner wall of the shell, the extrusion component extrudes the infusion tube on the inner wall of the shell, and an extrusion channel for laying the infusion tube is arranged between the rotating component and the shell.

The rotating assembly comprises a first rotating disc, a second rotating disc and a rotating shaft for connecting the first rotating disc and the second rotating disc; the extrusion assembly comprises an elastic arm rotatably arranged between the first rotating disc and the second rotating disc, an extrusion wheel rotatably arranged on the elastic arm and a spring; the both ends of axis of rotation respectively with first rolling disc, second rolling disc fixed connection, axis of rotation, first rolling disc, second rolling disc synchronous rotation. The axial direction of the extrusion wheel is the same as that of the rotating shaft, and the extrusion wheel rotates along the axis of the rotating shaft on the circumferential side surface of the rotating shaft and simultaneously rotates along the axis of the extrusion wheel. The elastic arm, the extrusion wheel, the spring all is located the circumference side of axis of rotation, the one end (lower extreme) of spring and the circumference side fixed connection of axis of rotation, the other end (upper end) of spring and the lower extreme of elastic arm (fixed connection), be equipped with the spacing resilience piece of first spacing resilience piece and the spacing resilience piece of second that is used for assisting the transfer line to kick-back on the elastic arm, the spacing resilience piece of first spacing resilience piece and second all is located the extrusion passageway, there is the clearance that is used for passing between the spacing resilience piece of first spacing resilience piece and second. The infusion tube is laid in the extrusion channel, when the rotating shaft, the first rotating disc and the second rotating disc synchronously rotate, the extrusion wheel can extrude the infusion tube, the extruded part of the infusion tube can become flat, then the first limit rebound block and the second limit rebound block on the elastic arm can pass through the flattened infusion tube, the flattened infusion tube is in the gap between the first limit rebound block and the second limit rebound block, because the width of the flattened infusion tube is larger than the gap, therefore, the first limit rebound block and the second limit rebound block can extrude the flattened infusion tube to assist the infusion tube to rebound to the original shape, the existing infusion tube has certain rebound capability, but if the extrusion of long-time process extrusion wheel, the self that has lasted the transfer line for a long time kick-backs can descend and can lose even, the spacing rebound piece of first spacing rebound piece and second plays the effect of supplementary transfer line resilience this moment. The infusion tube is extruded by the extrusion wheel and then rebounded through the first limit rebounding block and the second limit rebounding block. The extrusion wheel, the first limit resilience block and the second limit resilience block alternately act on the infusion tube, the infusion tube is extruded by the extrusion wheel firstly, then the infusion tube is rebounded by the first limit resilience block and the second limit resilience block, and then the infusion tube is extruded by the extrusion wheel again and is continuously repeated.

Referring to fig. 1, 2 and 4, a first straight shaft is fixed between the first rotating disc and the second rotating disc, two ends of the first straight shaft respectively penetrate through the first rotating disc and the second rotating disc, the elastic arm is rotatably mounted on the first straight shaft, a straight shaft hole is formed in the elastic arm, the straight shaft hole is matched with the first straight shaft, and the elastic arm rotates around the first straight shaft. All be equipped with logical groove on first rotating disk and the second rotating disk, the both sides of playing the arm all are equipped with the lug, play the lug of arm both sides and lie in logical inslot of logical groove and the second rotating disk of first rotating disk respectively, are fixed with the second straight axle between the lug of playing the arm both sides, and the extrusion wheel rotary type is installed on the second straight axle. The lug is located logical inslot, is equipped with straight shaft hole on the lug, and the straight shaft hole of the lug of bullet arm both sides is passed respectively at the both ends of second straight shaft. The extrusion wheel is rotatably mounted on the second straight shaft between the two lugs.

And a rolling bearing is arranged in the extrusion wheel and sleeved on the second straight shaft. The inside central through-hole that is equipped with of extrusion wheel, antifriction bearing has two, two antifriction bearing components of a whole that can function independently extrusion wheel both ends in the central through-hole, the extrusion wheel passes through the antifriction bearing rotary type and installs on the second straight axle, antifriction bearing passes through the dust washer and installs in the central through-hole of extrusion wheel, the dust washer prevents also can prevent that the dust from getting into antifriction bearing when antifriction bearing from the central through-hole roll-off for the rotation of extrusion wheel is more steady.

Referring to fig. 1, 5 and 6, a circular hole is formed on the circumferential side surface of the rotating shaft, a groove is formed on the elastic arm, a positioning column is arranged in the groove, one end of the spring penetrates into the circular hole and is fixed on the rotating shaft, and the other end of the spring is fixed in the groove and is sleeved on the positioning column. The round hole is along the radial setting of axis of rotation, and the recess is located the lower terminal surface that plays the arm, and the recess is equipped with the reference column that slightly is less than the spring internal diameter, the one end of spring wear into the round hole and with axis of rotation fixed connection, the spring housing on the reference column when the other end of spring wears into recess and recess fixed connection, when the extrusion wheel extrudees the transfer line, the spring provides the power of a directional bullet arm to play the arm and drive the extrusion wheel and constantly extrude the transfer line.

The extrusion subassembly has a plurality ofly, and a plurality of extrusion subassembly is along the circumferencial direction evenly distributed of axis of rotation. When the rotating shaft rotates, the infusion tube is alternately extruded by the components, and at least one extrusion wheel is ensured to extrude the infusion tube in the rotating process of the rotating shaft, so that the extrusion pump can continuously extrude the infusion tube to deliver liquid.

Referring to fig. 1, 2 and 3, the housing includes a semicircular arc plate and two straight plates; the two straight plates are respectively connected and tangent with the two ends of the semicircular arc plate, the shell is U-shaped, the infusion tube is laid in the extrusion channel between the inner wall of the circular arc plate and the extrusion wheel, and the inner wall of the circular arc plate and the extrusion wheel positioned in the extrusion channel are respectively contacted with the two ends of the outer wall of the infusion tube. The extrusion passageway that the extrusion wheel extrudeed the transfer line is located the semicircle inboard, and the extrusion wheel only extrudees that section transfer line that is located the semicircle inboard wall promptly, and when the transfer line was installed, the transfer line got into from one of them straight board and semicircle board junction, then worn out from another straight board and semicircle board junction.

The width of the gap between the first limit rebound block and the second limit rebound block is less than or equal to the diameter of the infusion tube. The rebound effect of the infusion tube is better, and better accuracy of the infusion flow speed is ensured. When the infusion tube loses the springback characteristic due to long-term use, the first limit springback block and the second limit springback block can assist the infusion tube to rebound.

Still be equipped with the pipe laying breach on the first rotating disk, first spacing resilience piece, the spacing resilience piece of second, second rotating disk are arranged along the axis direction of axis of rotation in proper order, and the pipe laying breach is located and extrudes the wheel and first spacing resilience piece between directly over, and the pipe laying breach is C shape, and the opening of pipe laying breach is cut to one side to the rotation direction of first rotating disk. When the rotating assembly is installed, the second rotating disc is arranged at the bottom and connected with the driving motor, the first rotating disc is arranged at the top, the driving motor is driven to belong to the prior art, and the driving motor is not shown in the drawing. All be equipped with a pipe laying breach between two extrusion components, the breach is located the outside of first rotary disk. When the transfer line is installed, at first let the pipe laying breach be located the junction of semicircle board and one of them straight board, then put the transfer line on the pipe laying breach, drive runner assembly rotates this moment, make this pipe laying breach can drive the transfer line and get into the semicircle inboard, just automatically drive one section transfer line and lay in the extrusion passageway after this pipe laying breach rotates the round, when laying the transfer line promptly, the inner wall that is the pipe laying breach of C shape extrudes the transfer line always and drags the transfer line to lay in leading to the inslot, accomplish and lay the transfer line automatically, do not need the manual work to install the transfer line in the extrusion passageway.

As shown in fig. 2, 3 and 4, the first limiting resilient block is provided with an inclined surface for guiding the infusion tube to enter a gap between the first limiting resilient block and the second limiting resilient block, and chamfers are arranged on the first limiting resilient block and the second limiting resilient block. First spacing resilience piece is located directly over the spacing resilience piece of second, and first spacing resilience piece is close to first rotary disk. When the infusion tube is laid, the inclined surface and the chamfer can guide the infusion tube to enter a gap between the first limit rebound block and the second limit rebound block.

The second rotating disc is provided with a through hole, the end face of the rotating shaft is provided with a driving hole, and the through hole is communicated with the driving hole. Transfer pump wriggling squeeze pump need cooperate outside driving motor to use, and when this transfer pump wriggling squeeze pump of installation, first rolling disc up, the laying of the transfer line of being convenient for, the second rolling disc is connected with driving motor down, and driving motor does not draw, and driving motor's output shaft passes through-hole and drive hole in proper order and rotates fixed connection, and driving motor drives the axis of rotation when pivoted and rotates.

The peristaltic extrusion pump of the infusion pump has the working principle that: firstly, installing the peristaltic extrusion pump of the infusion pump: the infusion pump peristaltic extrusion pump is installed at the output end of the driving motor, the first rotating disc is arranged on the upper portion, the second rotating disc is arranged on the lower portion, the driving motor drives the rotating assembly to rotate, and the rotating assembly drives the driving extrusion assembly to rotate. Secondly, the transfusion tube is installed: when the pipe laying notch on the first rotating disc is positioned at the joint of the semi-arc plate and one of the straight plates, the infusion pipe is placed on the pipe laying notch. Then the infusion tube enters the extrusion channel under the guidance of the inclined surface of the first limiting rebound block, the rotating shaft continues to rotate and drives the infusion tube to be laid in the whole extrusion channel, and finally the infusion tube penetrates out from the joint of the semi-circular arc plate and the other straight plate to complete the installation of the infusion tube. Finally, the infusion tube is extruded for infusion: the driving motor continuously drives the rotating assembly to rotate, so that the extrusion assembly is driven to rotate, the extrusion wheel of the extrusion assembly rotates along the second rotating shaft by taking the axis of the rotating shaft as a center, the extrusion wheel continuously extrudes the infusion tube, and the liquid in the infusion tube is conveyed. Extrusion wheel extruded transfer line can warp (become flat), the axis of rotation drives extrusion subassembly and continues to rotate this moment, when extrusion subassembly's bullet arm is through by the squashed transfer line, clearance between the spacing rebounding piece of first spacing rebounding piece and the spacing rebounding piece of second on the bullet arm can be through by the squashed transfer line, the transfer line is kick-backed to the spacing rebounding piece of this moment through first spacing rebounding piece and second, it is stable unchangeable to ensure the at every turn inspiratory liquid volume in long-time infusion, avoided along with the transfer line by extruded time extension, transfer line resilience ability can the decline problem gradually, the infusion velocity of flow precision has been improved.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. An infusion tube peristaltic extrusion pump is characterized in that: comprises a rotating component, an extrusion component arranged on the rotating component and a shell; the extrusion component and the rotating component are both positioned in the shell, the rotating component is rotatably installed in the shell, and an extrusion channel for laying an infusion tube is arranged between the rotating component and the shell;

the rotating assembly comprises a first rotating disc, a second rotating disc and a rotating shaft for connecting the first rotating disc and the second rotating disc; the extrusion assembly comprises an elastic arm rotatably arranged between the first rotating disc and the second rotating disc, an extrusion wheel rotatably arranged on the elastic arm and a spring; the both ends of axis of rotation respectively with first carousel, second carousel fixed connection, the axis direction of extrusion wheel is the same with the axis direction of axis of rotation, the bullet arm, the extrusion wheel, the spring all is located the circumference side of axis of rotation, the one end of spring and the circumference side fixed connection of axis of rotation, the other end and the bullet arm fixed connection of spring, be equipped with the spacing resilience piece of first spacing resilience piece and the spacing resilience piece of second that is used for supplementary transfer line resilience on the bullet arm, first spacing resilience piece and the spacing resilience piece of second all are located the extrusion passageway, there is the clearance that is used for the transfer line to pass between the spacing resilience piece of first spacing resilience piece and the spacing resilience piece of second, the transfer line is rebounded through first spacing resilience piece and the spacing resilience piece of second after the extrusion wheel extrusion.

2. An infusion tube peristaltic squeeze pump as in claim 1, wherein: be fixed with first straight axle between first rotating disk and the second rotating disk, the bullet arm rotary type is installed on first straight axle, all is equipped with logical groove on first rotating disk and the second rotating disk, and the both sides of bullet arm all are equipped with the lug, and the lug of bullet arm both sides is located logical groove of first rotating disk and the logical inslot of second rotating disk respectively, is fixed with the second straight axle between the lug of bullet arm both sides, and the extrusion wheel rotary type is installed on the second straight axle.

3. An infusion tube peristaltic squeeze pump as in claim 2, wherein: and a rolling bearing is arranged in the extrusion wheel and sleeved on the second straight shaft.

4. An infusion tube peristaltic squeeze pump as in claim 1, wherein: the circumference side of the rotating shaft is provided with a round hole, the elastic arm is provided with a groove, a positioning column is arranged in the groove, one end of the spring penetrates into the round hole and is fixed on the rotating shaft, and the other end of the spring is fixed in the groove and is sleeved on the positioning column.

5. An infusion tube peristaltic squeeze pump as in claim 1, wherein: the extrusion subassembly has a plurality ofly, and a plurality of extrusion subassembly is along the circumferencial direction evenly distributed of axis of rotation.

6. An infusion tube peristaltic squeeze pump as in claim 1, wherein: the shell comprises a semicircular arc plate and two straight plates; the two straight plates are respectively connected and tangent with the two ends of the semicircular arc plate, the shell is U-shaped, the infusion tube is laid in the extrusion channel between the inner wall of the circular arc plate and the extrusion wheel, and the inner wall of the circular arc plate and the extrusion wheel positioned in the extrusion channel are respectively contacted with the two ends of the outer wall of the infusion tube.

7. An infusion tube peristaltic squeeze pump as in claim 1, wherein: the width of the gap between the first limit rebound block and the second limit rebound block is less than or equal to the diameter of the infusion tube.

8. An infusion tube peristaltic squeeze pump as in claim 1, wherein: still be equipped with the pipe laying breach on the first rotating disk, first spacing resilience piece, the spacing resilience piece of second, second rotating disk are arranged along the axis direction of axis of rotation in proper order, and the pipe laying breach is located and extrudes directly over between wheel and the first spacing resilience piece, and the pipe laying breach is C shape.

9. An infusion tube peristaltic squeeze pump as in claim 8, wherein: the first limit rebound block is provided with an inclined plane for guiding the infusion tube to enter a gap between the first limit rebound block and the second limit rebound block.

10. An infusion tube peristaltic squeeze pump as in claim 1, wherein: the second rotating disc is provided with a through hole, the end face of the rotating shaft is provided with a driving hole, and the through hole is communicated with the driving hole.