CN203488326U - A light-weight precision ceramic injection pump - Google Patents

Abstract

The utility model discloses an accurate pottery infusion pump of light weight type, including driving motor, base and pump head, driving motor adorns on the base, the pump head tail end passes through shaft coupling and motor drive shaft hookup, is equipped with adjustment tank and base upper surface on the base and is equipped with the angle scale, is equipped with the locking locating piece in the adjustment tank, and this locking locating piece is connected with the pump head angle adjustment mechanism of dress on the base, and the pump head front end connects with the locking locating piece dress. The utility model discloses the precision is high, convenient operation, and whole lightweight, but wide application in fields such as medical treatment, health, electronic product manufacturing and chemistry.

Description

A light-weight precision ceramic injection pump

technical field

The utility model relates to a precision ceramic liquid injection pump, in particular to a lightweight precision ceramic liquid injection pump.

Background technique

Metering pumps, especially more sophisticated metering pumps, have been widely used in filling equipment in the fields of pharmaceuticals, biological reagents, and petrochemical industries due to their high-precision control of fluid metering and strong corrosion resistance. Existing metering pumps generally include three parts: drive motor, transmission end and hydraulic end. The output flow depends on the stroke speed of the transmission end, plunger smuggling and stroke length. The stroke length can be changed by adjusting the handle when the pump is running or stopped. To achieve the purpose of changing the flow. . After continuous development and improvement, the current metering pump has formed a product shape based on two mainstream technologies of plunger and diaphragm. The mature power drive method and liquid end material technology make the current metering pumps have a very wide range of applications. However, in the plunger metering pumps currently on the market, the plunger and the pump head body usually use packing such as packing and NBR, and a certain gap exists between the plunger, the packing seal, and the pump head body by rotating the packing compression cap. Preload to prevent liquid leakage. Excessive pre-tightening force will cause severe heating, accelerate the wear of the plunger and seals, and cause leakage. If the pre-tightening force is too small, the gap between the plunger, packing and pump head body is too large, which will also cause liquid leakage. Moreover, the accuracy of metering pumps on the market is not satisfactory, especially for automatic filling equipment, which has high requirements for accuracy, and general metering pumps cannot meet the requirements. And present metering pump overall weight is heavier, is difficult to move and take.

Contents of the invention

The technical problem to be solved by the utility model is to provide a light-weight precision ceramic injection pump, which is easy to operate, easy to adjust the angle of the pump head, and high in precision.

In order to solve the above technical problems, the utility model takes the following technical solutions:

A light-weight precision ceramic injection pump, including a driving motor, a base and a pump head, the driving motor is mounted on the base, the tail end of the pump head is connected to the drive shaft of the driving motor through a coupling, and an adjustment groove is provided on the base And the upper surface of the base is provided with an angle scale, the adjustment groove is provided with a locking positioning block, the locking positioning block is connected with the pump head angle adjustment mechanism installed on the base, the front end of the pump head is connected with the locking positioning block, the pump An end cap is provided at the head port.

The pump head includes a pump casing, a ceramic pump sleeve and a ceramic pump core. The pump core is installed in the pump sleeve, and the pump sleeve is installed in the pump casing. The pump sleeve is provided with a liquid inlet hole and a liquid outlet hole correspondingly connected with the liquid inlet assembly and the liquid outlet assembly. The liquid hole realizes dynamic fit, and the tail end of the pump core is connected with the shaft coupling.

The coupling includes a bracket. The bracket has a main arm and an auxiliary arm. The main arm is provided with a pump core hole, and the auxiliary arm is provided with a bayonet hole. In the pump core hole of the main arm, the bayonet pin is loaded into the bayonet hole of the auxiliary arm of the support.

The bayonet hole of the auxiliary arm of the bracket is provided with a hollow inner flip cover and an outer flip cover set on the inner flip cover. The inner flip cover is fitted with hollow balls, and the bayonet pin installed on the tail end of the pump core passes through the inner flip cover. It can be snap-fitted with balls.

The shaft coupling is mounted on a support frame, which is fixed on the base, and a shell cover is set on the support frame.

The pump head angle adjustment mechanism includes an adjustment knob installed on the base, and one end of the adjustment knob points to the locking positioning block in the adjustment groove.

The outer wall of the pump casing is equipped with a bottom plate, and the upper surface of the bottom plate in contact with the outer wall of the pump casing is an inclined surface, and the upper surface of the bottom plate is inclined downward from the tail end of the pump head to the front end of the pump head. The tight positioning block is snapped into place.

A hollow lubricating liquid cup is installed on the outer wall of the pump casing, the lubricating liquid cup is equipped with a cup cover, the pump casing is provided with a liquid conducting hole connected with the lubricating liquid cup, and the pump sleeve is provided with a liquid conducting through hole connected to the lubricating liquid cup. Connected liquid inlet through hole.

Foot pads are provided on the bottom surface of the base.

The utility model is lightweight as a whole, easy to take and move, and simple to operate, and the slightly downward installation of the pump head ensures that the air bubbles in the pump head can be exhausted and reliable precision is ensured. The pump core and pump sleeve are made of high-performance industrial ceramics, such as alumina ceramics and silicon carbide ceramics, which have corrosion resistance and high corrosion resistance, and are suitable for various liquids such as acid, alkali, and organic solvents, and have a wide range of applications. , and has a long service life. The injection accuracy is high, and the repeated injection accuracy is less than 0.5%. The entire pump head does not adopt the structural design of the conventional inlet and outlet valves, and the entire structure is more compact, which can realize the transmission of different liquid viscosities. Easy to operate, just adjust the angle of the pump head to realize the change of liquid injection volume, which can meet various needs. In addition, it has good sealing performance and is processed by high-precision machining. It can be widely used in lithium-ion battery electrolyte (including gel), quantitative perfusion of fuel cells, and in the fields of pharmaceutical industry, paper printing industry, electronic product manufacturing industry, cosmetics manufacturing industry, food manufacturing industry and chemistry. It is convenient to embed into other automatic perfusion equipment.

Description of drawings

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the present utility model;

Accompanying drawing 2 is the structural representation of the utility model decomposition state;

Accompanying drawing 3 is the disassembled state structural representation of pump head in the utility model;

Accompanying drawing 4 is the sectional structural representation of pump head in the utility model;

Accompanying drawing 5 is the disassembled state structure diagram of coupling in the utility model.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the accompanying drawings.

As shown in accompanying drawings 1 to 5, the utility model discloses a lightweight precision liquid injection pump, including a drive motor 1, a base 12 and a pump head 5, the drive motor 1 is mounted on the base 12, and the pump head 5 ends The end is connected with the transmission shaft of the drive motor 1 through a coupling 14, the base 12 is provided with an adjustment groove 19 and the upper surface of the base 12 is provided with an angle scale, and the adjustment groove 19 is provided with a locking positioning block 8, the locking positioning block 8 is connected with the pump head angle adjustment mechanism installed on the base 12, and the front end of the pump head 5 is connected with the locking positioning block 8. The drive motor 1 drives the pump head to move through the shaft coupling 14, and an end cover 17 is provided at the port of the pump head 5 to ensure that the liquid will not flow out.

The pump head 5 includes a pump casing 53, a ceramic pump sleeve 52 and a ceramic pump core 51. The pump core 51 is installed in the pump sleeve 52, and the pump sleeve 52 is installed in the pump casing 53. The liquid inlet component 13 and the liquid outlet component 6 on the side wall, the pump sleeve 52 is provided with a liquid inlet hole and a liquid outlet hole corresponding to the liquid inlet component 13 and the liquid outlet component 6, and the front end of the pump core 51 is provided with a stepped groove 16 , the pump core 51 is dynamically matched with the liquid inlet hole and the liquid outlet hole, and the tail end of the pump core 51 is connected with the shaft coupling 14 through transmission. The outer wall of the pump casing 53 is equipped with a bottom plate 24, the upper surface of the bottom plate 24 in contact with the outer wall of the pump casing 53 is an inclined surface, and the upper surface of the bottom plate is inclined downward from the tail end of the pump head to the front end of the pump head. The locking positioning block 8 in 19 is clamped, so that the pump head maintains a small inclination angle, so that the air bubbles inside can be exhausted. In addition, the front end of the bottom plate on the pump casing 53 has a notch 9 , and the locking positioning block 8 in the adjustment groove 19 on the base 12 is snapped into the notch 9 of the bottom plate 24 . A hollow lubricating liquid cup 4 is installed on the outer wall of the pump casing 53. The cup cover 3 is mounted on the lubricating liquid cup 4. The pump casing 53 is provided with a liquid-conducting through hole 21 communicating with the lubricating liquid cup 4. The pump sleeve 52 is provided with There is a liquid inlet through hole 22 communicated with the liquid guide through hole 21, and lubricating oil enters from the lubricating liquid cup to ensure the lubricity of each part and prolong the service life.

The pump core 51 and the pump sleeve 52 are made of high-performance industrial ceramics with corrosion resistance and high corrosion resistance, such as silicon carbide ceramics, alumina ceramics, or other industrial ceramics. Listed, and this type of industrial ceramics are known products, can be purchased directly on the market, and will not be described in detail here. The pump casing is made of stainless steel, titanium alloy or Teflon and other materials to meet the needs of different occasions. The pump casing 53, the pump sleeve 52 and the pump core 51 are preferably designed to be cylindrical. A part of the front end of the pump core 51 is provided with a stepped slot 16 along the axial direction. The specific length of the stepped slot 16 is not limited. According to the corresponding model and products for flexible settings. The step slot 16 realizes the entry and exit of the liquid in the pump sleeve 52 , does not require the structural design of conventional entry and exit valves, and can realize the transmission of different liquid viscosities. The driving motor can be driven by a stepping motor, an explosion-proof motor, a synchronous motor, a servo motor, an induction motor or a pneumatic mode, and can be flexibly selected, and these motors are all existing known products on the market.

In addition, the coupling 14 includes a bracket 1401. The bracket 1401 has a main arm 1403 and an auxiliary arm 1405. The main arm 1403 is provided with a pump core hole 1402, and the auxiliary arm 1405 is provided with a bayonet hole 1404. The tail end of the pump core 51 is installed vertically. There is bayonet 15, and the tail end of pump core 51 is packed in the pump core hole 1402 of main arm 1403, and bayonet 15 is packed in the bayonet hole 1404 of auxiliary arm 1405 of support 1401. The bayonet hole 1404 of the auxiliary arm 1405 of the bracket 1401 is provided with a hollow inner flip cover 1406 and an outer flip cover 1408 set on the inner flip cover 1406. The inner flip cover 1406 is fitted with a hollow ball 1407, and the pump core 51 is installed on the tail end. The bayonet pin 15 passes through the inner flip cover 1406 and the ball 1407 to realize snap-fit installation. The drive motor drives the pump head to rotate in a circle through the coupling, and also to swing left and right. The shaft coupling 14 is mounted on a support frame 25, which is fixed on the base 12, and the support frame 25 is also covered with a shell 2, which can effectively prevent external debris from entering the shaft coupling. Because the ball 1407 is a spherical structure, the size of the ball 1407 matches the size of the hollow cavity of the inner flip cover 1406, and the ball 1407 is installed in the inner flip cover 1406 so that it will not fall or be easily ejected, and the surface of the ball 1407 It is a smooth surface and can be turned inside the flip cover 1406 . The outer flip cover 1408 is mounted on the inner flip cover 1406, so that the ball 1407 and the inner flip cover 1406 are not easily damaged, and foreign impurities are not easy to enter the inner flip cover 1406. One end of the bayonet pin 15 at the pump core 51 tail end is mounted on the pump core 51 tail end, and the other end of the bayonet pin 15 passes through the inner flip cover 1406 and the ball 1407 to engage, and the bayonet 15 can be deflected in the ball 1407 . In addition, the tail end of the pump core 51 realizes transmission connection with the drive motor 1 through the coupling 14, and the coupling 14 realizes the transmission of the two shafts so that they rotate together to transmit torque. technology and will not be described in detail here.

The pump head angle adjustment mechanism includes an adjustment knob 7 mounted on the base. One end of the adjustment knob 7 points to the locking positioning block 8 in the adjustment groove 19. When the adjustment knob 7 is rotated, the adjustment knob 7 will perform telescopic movement. When the positioning block is extended, push and lock the positioning block 8 to move in the adjustment groove 19, thereby driving the whole pump head to move, and smoothly adjusting the angle of the pump head during winter vacation. Since the angle scale is arranged on the base plate, the angle to be adjusted can be obtained conveniently and clearly, and the adjustment knob is only needed to be turned, so the operation is very convenient. Foot pads are arranged on the bottom surface of the base, which can not only maintain the level, but also help to protect the bottom plate.

In addition, the liquid inlet assembly 13 and the liquid outlet assembly 6 in the present invention have the same structural form, and are known technologies to those skilled in the art. The liquid inlet assembly 13 and the liquid outlet assembly 6 both include a catheter 26 and an end cap 27, the two ends of the catheter 26 are equipped with end caps 27, and an installation hole is provided on the inner wall of the pump housing 53, and one end of the catheter is installed on the In the installation hole, a knob cover can also be set on the catheter, which is convenient for disassembly and assembly. The liquid inlet hole on the pump sleeve communicates with the liquid inlet component, and the liquid outlet hole communicates with the liquid outlet component, so as to realize the liquid entering and flowing out. The liquid inlet component and the liquid outlet component are usually installed symmetrically on the pump casing, which is convenient for control and good for the appearance of the product. This is a conventional method and will not be described in detail.

The working principle of the utility model is as follows: the conduit is connected with the liquid inlet component, the other end of the conduit communicates with the liquid to be poured, and the liquid discharge component is also connected with the conduit and extends to the product to be poured. During the initial state, the step groove 15 on the pump core 51 is downward, and the side wall of the pump core 51 blocks the liquid inlet and the liquid outlet of the closed pump sleeve 52, so that the liquid can neither enter nor exit. Start the drive motor 1, and the drive shaft of the drive motor 1 rotates to make the shaft coupling 14 rotate 360 degrees, and drive the pump core 51 to rotate 360 degrees. Simultaneously due to the rotation of the shaft coupling 14, the ball 1404 installed in the shaft coupling 14 is slightly rotated in the inner flip cover 1403, and the bayonet pin 15 at the tail end of the pump core 51 is in the ball 1404 along with the rotation of the ball 1404. Rotate to make a certain degree of deflection, thereby driving the pump core 51 to move forward and backward.

During the liquid intake process, with the rotation of the pump core 51, the step groove 15 of the pump core 51 faces the liquid inlet hole of the pump sleeve 52. At this time, there is a gap between the liquid inlet hole and the step groove 15, and the pump core 51 is rotating During the process, the displacement occurs toward the direction close to the coupling 14, that is, it moves backward, so that the external liquid is sucked into the pump sleeve 52 through the liquid inlet assembly 13 and the liquid inlet hole. The pump core 51 continues to rotate, and the step slot 15 leaves the liquid inlet hole. At this time, the liquid inlet hole is blocked and closed by the pump core 51 again, so that the liquid cannot enter the pump sleeve 52 temporarily, and the liquid inlet process ends and enters the predetermined liquid flow.

During the liquid discharge process, after the liquid intake is completed, the pump core 51 continues to rotate under the drive of the drive motor 1. At this time, the step slot 15 of the pump core 51 rotates towards the position of the liquid outlet hole. At this time, the liquid outlet hole and the pump core 51 step There is a gap between the slots 15. During the process of the pump core 51 turning from the liquid inlet hole to the liquid outlet hole, the pump core 51 is displaced in a direction away from the coupling 14 while rotating 360 degrees, that is, it moves forward. The liquid in the pump sleeve 52 flows into the gap formed between the pump core 51 and the liquid outlet hole. When the pump core 51 is displaced away from the coupling 14, the liquid is discharged from the liquid outlet hole. The liquid component is discharged into the product to be filled, and the liquid discharge process is completed.

Then the pump core 51 continues to rotate under the drive of the drive motor 1 until the pump core 51 returns to the initial state, completing a 360-degree rotation cycle. During this cycle, the pump core 51 with the stepped groove 15 acts as a valve when rotating, and realizes periodic switching between the liquid inlet hole and the liquid outlet hole, and the forward and backward movement of the pump core makes the liquid be sucked and discharged periodically. discharge. One cycle completes the filling of one product, and when the next product needs to be filled, the pump core continues to rotate. When the liquid is repeatedly poured back and forth, the error of the liquid volume before and after is less than 0.5%, that is, the repeatability is less than 0.5%, which has high precision. .

In addition, when the injection volume needs to be changed, only the angle of the pump head needs to be adjusted. When adjusting the angle of the pump head, you only need to turn the adjustment knob, thereby driving the angle adjustment of the entire pump head. Thereby bringing different liquid volumes, realizing different volumes of perfusion, convenient operation and wide application range.

It should be noted that the above description is not a limitation of the present utility model, and any obvious replacements are within the protection scope of the present utility model without departing from the inventive concept of the present utility model.

Claims (10)

1. A light-weight precision ceramic liquid injection pump, including a drive motor (1), a base (12) and a pump head (5), the drive motor is installed on the base, and it is characterized in that the tail end of the pump head is connected The shaft device (14) is connected with the driving motor drive shaft, the base is provided with an adjustment groove (19) and the upper surface of the base is provided with an angle scale, and the adjustment groove is provided with a locking positioning block (8). The pump head angle adjustment mechanism installed on the base is connected, the front end of the pump head is connected with the locking positioning block, and the port of the pump head is provided with an end cover (17). 2. The light-weight precision ceramic liquid injection pump according to claim 1, characterized in that, the pump head includes a pump casing (53), a ceramic pump sleeve (52) and a ceramic pump core (51), and the pump core is installed In the pump casing, the pump casing is installed in the pump casing, and the liquid inlet assembly (13) and the liquid outlet assembly (6) passing through the side wall of the pump casing are installed on the outer wall of the pump casing. The liquid component corresponds to the connected liquid inlet and liquid outlet. The front end of the pump core is provided with a stepped groove (16). Coupling transmission connection. 3. The lightweight precision ceramic infusion pump according to claim 2, characterized in that, the coupling (14) includes a bracket (1401), and the bracket has a main arm (1403) and an auxiliary arm (1405), There is a pump core hole (1402) on the main arm, and a bayonet hole (1404) on the auxiliary arm. The bayonet (15) is vertically installed at the tail end of the pump core, and the tail end of the pump core is inserted into the pump core hole of the main arm. , the bayonet is installed in the bayonet hole of the auxiliary arm of the bracket. 4. The light-weight precision ceramic injection pump according to claim 3, characterized in that, a hollow inner flip cover (1406) and an outer flip cover set on the inner flip cover are provided in the bayonet hole of the auxiliary arm of the bracket. The flip cover (1408), the inner flip cover is fitted with a hollow ball (1407), and the bayonet pin installed on the tail end of the pump core passes through the inner flip cover and the ball to achieve snap-fit installation. 5. The light-weight precision ceramic injection pump according to claim 4, characterized in that, the coupling (14) is mounted on a support frame (25), and the support frame is fixed on the base (12), A shell cover (2) is also set on the support frame. 6. The light-weight precision ceramic injection pump according to claim 5, characterized in that, the pump head angle adjustment mechanism includes an adjustment knob (7) mounted on the base, and one end of the adjustment knob (7) points to adjust Lock positioning block (8) in the groove. 7. The lightweight precision ceramic liquid injection pump according to claim 6, characterized in that a bottom plate (24) is installed on the outer wall of the pump casing, and the upper surface of the bottom plate in contact with the outer wall of the pump casing is an inclined surface, and The upper surface of the bottom plate is inclined downward from the rear end of the pump head to the front end of the pump head, and the bottom plate is clamped with the locking positioning block in the mixing tank. 8. The light-weight precision ceramic injection pump according to claim 7, characterized in that a hollow lubricating liquid cup (4) is installed on the outer wall of the pump casing, and a cup cover (3) is mounted on the lubricating liquid cup, The pump casing is provided with a liquid guide hole (21) connected with the lubricating liquid cup, and the pump sleeve is provided with a liquid inlet hole (22) connected with the liquid guide hole. 9. The light-weight precision ceramic liquid injection pump according to claim 8, characterized in that, a sealing gasket (23) in close contact with the end cover is installed at the port of the pump casing. 10. The light-weight precision ceramic liquid injection pump according to any one of claims 1-9, characterized in that a foot pad (20) is provided on the bottom surface of the base.

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