Peristaltic pump with increased pump tube life

Abstract

The utility model relates to a peristaltic pump that increases pump pipe life, which comprises a motor, a worm connected to the motor, a plastic gear connected to the worm, a plastic support connected to the plastic gear, a cylindrical roller connected to the plastic support, and a pump pipe connected to the cylindrical roller. A conical roller is installed on the plastic support to limit the pump pipe. The motor drives the worm to rotate, the worm drives the plastic gear to rotate, the plastic gear drives the plastic support to rotate, the plastic support drives the cylindrical roller to rotate, the cylindrical roller extrudes the pump pipe, and the pump pipe generates negative pressure under the extrusion of the cylindrical roller to transport liquid. This peristaltic pump that increases pump pipe life can reduce the relative friction between the limiting structure and the outer wall of the pump pipe, and prolong the service life of the pump pipe.

Description

Technical Field

[0001] This utility model relates to the field of peristaltic pump technology, and in particular to a peristaltic pump that extends the life of the pump tube. Background Technology

[0002] Currently, existing peristaltic pumps on the market limit the position of the pump tube by using a rotating bracket or by using a cover plate and base steps to ensure that the pump tube is always under the pressure of the rollers. Due to the influence of assembly dimensional tolerances and the gaps left between the rollers and the upper and lower covers, the dimensions of the pump tube after assembly cannot be fixed, and the position of the pump tube is random, resulting in unstable product performance and a wide range of various parameters.

[0003] Existing peristaltic pump technologies have several drawbacks in their methods of limiting the pump tubing. For example, the bracket-based limiting method suffers from wear because the bracket moves relative to the pump tubing, causing prolonged friction between the contact surfaces. While the cover plate and base step limiting method keep the pump tubing stationary relative to these surfaces, during actual operation, the tubing's elasticity causes it to stretch and displace short distances when the rollers press against it. When the pressure is released, the tubing returns to its original shape, resulting in friction and wear between the tubing and the limiting contact surfaces. Furthermore, the step limiting method with the cover plate and steps leads to inconsistent positioning of the tubing rollers, causing the tubing to move up and down, making it difficult to precisely control the current, voltage, and sealing lines of the peristaltic pump. Utility Model Content

[0004] Therefore, it is necessary to address the numerous shortcomings of existing peristaltic pumps in limiting the pump tube and to provide a peristaltic pump that extends the life of the pump tube.

[0005] A peristaltic pump for extending the life of the pump tube includes a motor, a worm gear connected to the motor, a plastic gear connected to the worm gear, a plastic bracket connected to the plastic gear, a cylindrical roller connected to the plastic bracket, and a pump tube connected to the cylindrical roller. A conical roller is mounted on the plastic bracket, and the conical roller is used to limit the pump tube. The motor drives the worm gear to rotate, the worm gear drives the plastic gear to rotate, the plastic gear drives the plastic bracket to rotate, the plastic bracket drives the cylindrical roller to rotate, the cylindrical roller squeezes the pump tube, and the pump tube generates negative pressure under the squeezing of the cylindrical roller to transport the liquid.

[0006] When the aforementioned peristaltic pump with extended tubing life is operating, the motor first drives the worm gear to rotate, which in turn drives the plastic gear to rotate. The plastic gear then drives the plastic support to rotate, which in turn drives the cylindrical roller to rotate. The cylindrical roller then compresses the pump tubing, creating negative pressure in the tubing to transport the liquid. It can be seen that this peristaltic pump with extended tubing life is an optimized design compared to traditional peristaltic pumps. It no longer restricts the position of the pump tubing by limiting the rotation support or by using a cover plate and base steps. Instead, it uses a combination of conical and cylindrical rollers to limit the position of the pump tubing. During operation, the conical and cylindrical rollers rotate along the outer wall of the pump tubing, simultaneously fixing the position of the tubing. This improves the performance accuracy of the peristaltic pump and reduces the relative friction between the rollers and the outer wall of the tubing, thereby extending the service life of the pump tubing.

[0007] In one embodiment, the system further includes a housing, wherein the worm gear, the plastic gear, the plastic bracket, the cylindrical roller and the pump pipe are all disposed on the inner side of the housing, and the motor is disposed on the outer side of the housing; The housing includes a lower plastic shell, an upper plastic shell, and a middle plastic plate. The upper plastic shell, the middle plastic plate, and the lower plastic shell are fixedly connected by a first screw, and the middle plastic plate is disposed between the lower plastic shell and the upper plastic shell.

[0008] In one embodiment, the motor includes a shaft, and the worm gear is provided with a mounting groove that mates with the shaft, the shaft being interference-fitted with the mounting groove.

[0009] In one embodiment, the plastic lower shell has a hollow structure, and the rotating shaft is connected to the mounting groove through the hollow structure.

[0010] In one embodiment, the plastic lower housing is fixedly connected to the motor by a second screw.

[0011] In one embodiment, the plastic gear and the worm are both located between the lower plastic shell and the middle plastic plate, and the middle plastic plate is fixedly connected to the lower plastic shell by a third screw.

[0012] In one embodiment, the plastic bracket includes a connecting portion, and the plastic middle plate is provided with a slot that mates with the connecting portion.

[0013] In one embodiment, the plastic bracket is equipped with a stepped shaft and a wheel axle, the tapered roller is mounted on the stepped shaft, and the cylindrical roller is mounted on the wheel axle.

[0014] In one embodiment, the pump tube is arranged around the outside of the plastic bracket, and both ends of the pump tube extend outward from the plastic upper shell, and both ends of the pump tube are equipped with plastic connectors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the peristaltic pump for extending the life of the pump tube according to this utility model. Figure 2 This is a partial structural diagram of the peristaltic pump for extending the life of the pump tube according to this utility model. Figure 3 This is a partial structural diagram of the peristaltic pump for extending the life of the pump tube according to this utility model. Figure 4 This is a schematic diagram of the plastic support structure in the peristaltic pump for extending the life of the pump tube according to this utility model. Figure 5 This is an exploded structural diagram of the peristaltic pump for extending the life of the pump tube according to this utility model. Figure 6 This is a schematic diagram of the liquid flow direction in the peristaltic pump that extends the life of the pump tube according to this utility model. Among them, 1 is the plastic upper shell, 2 is the plastic support, 3 is the cylindrical roller, 4 is the wheel axle, 5 is the conical roller, 6 is the stepped shaft, 7 is the pump pipe, 8 is the plastic connector, 9 is the third screw, 10 is the plastic middle plate, 11 is the plastic gear, 12 is the plastic lower shell, 13 is the first screw, 14 is the second screw, 15 is the worm gear, 16 is the motor, and the arrow indicates the direction of liquid flow. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] This utility model discloses a peristaltic pump that extends the life of the pump tube.

[0020] like Figures 1 to 6 As shown, the peristaltic pump for extending the life of the pump tube includes a motor 16, a worm gear 15 connected to the motor 16, a plastic gear 11 connected to the worm gear 15, a plastic bracket 2 connected to the plastic gear 11, a cylindrical roller 3 connected to the plastic bracket 2, and a pump tube 7 connected to the cylindrical roller 3. A conical roller 5 is installed on the plastic bracket 2, which is used to limit the pump tube 7. The motor 16 drives the worm gear 15 to rotate, the worm gear 15 drives the plastic gear 11 to rotate, the plastic gear 11 drives the plastic bracket 2 to rotate, the plastic bracket 2 drives the cylindrical roller 3 to rotate, and the cylindrical roller 3 is used to squeeze the pump tube 7. The pump tube 7 is used to generate negative pressure under the squeezing of the cylindrical roller 3, thereby transporting the liquid.

[0021] When the aforementioned peristaltic pump with extended tubing life is operating, the motor first drives the worm gear to rotate, which in turn drives the plastic gear to rotate. The plastic gear then drives the plastic support to rotate, which in turn drives the cylindrical roller to rotate. The cylindrical roller then compresses the pump tubing, creating negative pressure in the tubing to transport the liquid. It can be seen that this peristaltic pump with extended tubing life is an optimized design compared to traditional peristaltic pumps. It no longer restricts the position of the pump tubing by limiting the rotation support or by using a cover plate and base steps. Instead, it uses a combination of conical and cylindrical rollers to limit the position of the pump tubing. During operation, the conical and cylindrical rollers rotate along the outer wall of the pump tubing, simultaneously fixing the position of the tubing. This improves the performance accuracy of the peristaltic pump and reduces the relative friction between the rollers and the outer wall of the tubing, thereby extending the service life of the pump tubing.

[0022] The peristaltic pump for extending the life of the pump tube also includes a housing, with the worm gear 15, plastic gear 11, plastic support 2, cylindrical roller 3 and pump tube 7 all located inside the housing, and the motor 16 located outside the housing. The housing includes a lower plastic shell 12, an upper plastic shell 1 and a middle plastic plate 10. The upper plastic shell 1, the middle plastic plate 10 and the lower plastic shell 12 are fixedly connected by a first screw 13, and the middle plastic plate 10 is located between the lower plastic shell 12 and the upper plastic shell 1.

[0023] By setting up a housing and placing the worm gear 15, plastic gear 11, plastic bracket 2, cylindrical roller 3 and pump pipe 7 inside the housing, and the motor 16 outside the housing, the worm gear 15, plastic gear 11, plastic bracket 2, cylindrical roller 3 and pump pipe 7 can be protected, while avoiding the motor 16 occupying the internal space of the housing.

[0024] When assembling the peristaltic pump that extends the life of the pump tube, the upper plastic shell 1, the middle plastic plate 10, and the lower plastic shell 12 can be fixed together by installing the first screw 13, thereby improving the installation efficiency of the peristaltic pump that extends the life of the pump tube.

[0025] The motor 16 includes a rotating shaft, and the worm gear 15 has a mounting groove that mates with the rotating shaft. The rotating shaft and the mounting groove are connected by an interference fit. The interference fit between the rotating shaft and the mounting groove makes the connection between the motor 16 and the worm gear 15 more secure, allowing the worm gear 15 to rotate synchronously under the drive of the motor 16.

[0026] The lower plastic shell 12 has a hollow structure, through which the rotating shaft is connected to the mounting groove. This hollow structure allows the motor 16 on the outside of the shell to connect smoothly to the worm gear 15 on the inside of the shell.

[0027] The lower plastic shell 12 is fixedly connected to the motor 16 by a second screw 14. The second screw 14 fixes the lower plastic shell 12 to the motor 16, thereby reducing the noise during operation of the peristaltic pump that extends the life of the pump tube and enhancing the structural stability of the peristaltic pump that extends the life of the pump tube.

[0028] The plastic gear 11 and the worm gear 15 are both located between the plastic lower shell 12 and the plastic middle plate 10. The plastic middle plate 10 is fixedly connected to the plastic lower shell 12 by the third screw 9.

[0029] The plastic gear 11 and worm gear 15 are both located between the plastic lower shell 12 and the plastic middle plate 10, making the structure of the peristaltic pump that extends the life of the pump tube more reasonable. At the same time, the plastic middle plate 10 is fixedly connected to the plastic lower shell 12 by the third screw 9, which also makes the structure of the peristaltic pump that extends the life of the pump tube more stable.

[0030] The plastic support 2 includes a connecting part, and the plastic middle plate 10 is provided with a slot for the connecting part. By providing a slot for the connecting part in the plastic middle plate 10, the plastic support 2 can be connected to the plastic gear 11, thereby allowing the main body of the plastic support 2 to be installed between the plastic middle plate 10 and the plastic upper shell 1, making the structure of the peristaltic pump that extends the pump tube life more reasonable.

[0031] The plastic bracket 2 is equipped with a stepped shaft 6 and a wheel axle 4. A conical roller 5 is mounted on the stepped shaft 6, and a cylindrical roller 3 is mounted on the wheel axle 4. By mounting the stepped shaft 6 and wheel axle 4 on the plastic bracket 2, and mounting the conical roller 5 on the stepped shaft 6 and the cylindrical roller 3 on the wheel axle 4, the conical roller 5 can rotate around the stepped shaft 6, and the cylindrical roller 3 can rotate around the wheel axle 4. When the peristaltic pump, which extends the pump tube life, is working, the friction between the cylindrical roller 3, the conical roller 5, and the outer wall of the pump tube 7 can be reduced, thereby extending the service life of the pump tube 7.

[0032] Furthermore, the cylindrical roller 3 includes a first cylindrical roller and a second cylindrical roller. The first cylindrical roller is mounted on the first side of the plastic bracket 2, and the second cylindrical roller is mounted on the second side of the plastic bracket 2. The conical roller 5 includes a first conical roller, a second conical roller, a third conical roller, and a fourth conical roller. The first and second conical rollers are mounted on the third side of the plastic bracket 2, and the third and fourth conical rollers are mounted on the fourth side of the plastic bracket 2. The axes of the first cylindrical roller and the second cylindrical roller are parallel to each other, and the axes of the first conical roller, the second conical roller, the third conical roller, and the fourth conical roller are also parallel to each other. The axes of the first cylindrical roller and the second cylindrical roller are perpendicular to the axes of the first conical roller, the second conical roller, the third conical roller, and the fourth conical roller. The first and second conical rollers work together to limit one side of the pump pipe 7, while the third and fourth conical rollers work together to limit the other side of the pump pipe 7.

[0033] The pump pipe 7 is arranged around the outside of the plastic bracket 2, and both ends of the pump pipe 7 extend to the outside of the plastic upper shell 1, and both ends of the pump pipe 7 are equipped with plastic connectors 8.

[0034] By circling the pump tube 7 around the outside of the plastic bracket 2, it can be squeezed by the cylindrical roller 3, thereby generating negative pressure under the pressure of the cylindrical roller 3 to transport the liquid. By installing plastic connectors 8 at both ends of the pump tube 7, it is easy to connect the inlet pipe and the outlet pipe at both ends of the pump tube 7 respectively.

[0035] This utility model also discloses a method for operating the peristaltic pump that extends the lifespan of the pump tube. The method includes: controlling the rotation of a motor 16, which in turn drives a worm gear 15 to rotate, which in turn drives a plastic gear 11 to rotate, which in turn drives a plastic support 2 to rotate, which in turn drives a cylindrical roller 3 to rotate. The cylindrical roller 3 then compresses the pump tube 7, creating a negative pressure in the pump tube 7 under the pressure of the cylindrical roller 3, thereby transporting the liquid. It can be seen that through the above-mentioned method for operating the peristaltic pump that extends the lifespan of the pump tube, the pump tube's liquid transport can be controlled by controlling the rotation direction of the motor 16. Furthermore, during the transport process, the cylindrical roller 3, the conical roller 5, and the outer wall of the pump tube 7 experience rolling friction, which reduces wear on the pump tube 7 and increases its service life.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A peristaltic pump for extending the life of the pump tubing, characterized in that, The device includes a motor, a worm gear connected to the motor, a plastic gear connected to the worm gear, a plastic bracket connected to the plastic gear, a cylindrical roller connected to the plastic bracket, and a pump tube connected to the cylindrical roller. A conical roller is mounted on the plastic bracket, and the conical roller is used to limit the movement of the pump tube. The motor drives the worm gear to rotate, the worm gear drives the plastic gear to rotate, the plastic gear drives the plastic bracket to rotate, the plastic bracket drives the cylindrical roller to rotate, the cylindrical roller squeezes the pump tube, and the pump tube generates negative pressure under the squeezing of the cylindrical roller to transport the liquid.

2. The peristaltic pump for extending pump tube life according to claim 1, characterized in that, It also includes a housing, wherein the worm gear, the plastic gear, the plastic bracket, the cylindrical roller and the pump pipe are all located inside the housing, and the motor is located outside the housing; The housing includes a lower plastic shell, an upper plastic shell, and a middle plastic plate. The upper plastic shell, the middle plastic plate, and the lower plastic shell are fixedly connected by a first screw, and the middle plastic plate is disposed between the lower plastic shell and the upper plastic shell.

3. The peristaltic pump for extending the life of the pump tube according to claim 2, characterized in that, The motor includes a rotating shaft, and the worm gear is provided with a mounting groove that mates with the rotating shaft. The rotating shaft is interference-fitted with the mounting groove.

4. The peristaltic pump for extending pump tube life according to claim 3, characterized in that, The lower plastic shell has a hollow structure, and the rotating shaft is connected to the mounting groove through the hollow structure.

5. The peristaltic pump for extending pump tube life according to claim 4, characterized in that, The lower plastic shell is fixedly connected to the motor by a second screw.

6. The peristaltic pump for extending pump tube life according to claim 5, characterized in that, Both the plastic gear and the worm gear are located between the lower plastic shell and the middle plastic plate, and the middle plastic plate is fixedly connected to the lower plastic shell by a third screw.

7. The peristaltic pump for extending pump tube life according to claim 6, characterized in that, The plastic bracket includes a connecting part, and the plastic middle plate is provided with a slot that matches the connecting part.

8. The peristaltic pump for extending pump tube life according to claim 7, characterized in that, The plastic bracket is equipped with a stepped shaft and a wheel axle. The tapered roller is mounted on the stepped shaft, and the cylindrical roller is mounted on the wheel axle.

9. The peristaltic pump for extending pump tube life according to claim 8, characterized in that, The pump tube is arranged around the outside of the plastic bracket, and both ends of the pump tube extend outwards from the plastic upper shell, and both ends of the pump tube are equipped with plastic connectors.

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