Peristaltic pump

Abstract

The utility model belongs to the technical field of fluid pumping, and particularly relates to a peristaltic pump. A peristaltic pump for conveying a fluid guided in a hose, comprising: a fluid conveying body comprising a squeeze bed on which a plurality of squeeze rollers are arranged in a circumferential direction, the squeeze rollers cooperating with the squeeze bed to co-squeeze the hose so as to guide the fluid, and a drive disk rotating relative to the squeeze bed; the automatic pipe feeding and discharging device comprises a pipeline shifting plate and a driving device, and a shifting plate groove is formed in the pipeline shifting plate. An automatic pipe feeding and discharging device is arranged at a fluid conveying inlet, a hose is clamped in a shifting plate groove, a rotating shaft drives a rotating shaft plate to rotate, the shifting plate groove and the hose can be driven to move up and down in the direction perpendicular to a driving disc, pipe feeding and discharging guiding is conducted, the driving disc rotates, and the hose can be driven to enter or move out of a gap between an extrusion roller and an extrusion bed. Automatic pipe feeding and discharging are achieved, and time and labor wasting caused by manual pipe feeding and discharging is avoided.

Description

Technical Field

[0001] This application belongs to the field of fluid pumping technology, and particularly relates to a peristaltic pump. Background Technology

[0002] Peristaltic pumps pump fluids by alternately squeezing and releasing the pump's flexible delivery hose. They are commonly used in liquid metering and filling applications, such as quantitative dispensing of medical and chemical reagents. Their working principle is generally that the squeezing roller rotates around a rotating shaft parallel to its axis inside the pump casing, squeezing and pushing the liquid in the flexible delivery hose forward. This creates a vacuum at the rear end of the flexible delivery hose, drawing the liquid into the hose, where it is further propelled forward by the following squeezing roller, thus quantitatively transporting the liquid.

[0003] When using a peristaltic pump for liquid transport, the pumped product, except for the hose, does not directly contact the pump body. It offers high repeatability and stability, and will not damage any pump components during dry running without liquid. It can transport various corrosive, oxygen-sensitive medical reagents, chemical reagents, other materials, and various food products. During use, only the hose needs to be replaced, and the replacement operation is relatively simple. Therefore, peristaltic pumps are widely used for transporting various fluids.

[0004] Existing peristaltic pumps require manual winding of the tubing around the pump's compression rollers. Therefore, each time the tubing is disassembled and replaced, it is necessary to manually add and remove the tubing, or to introduce it by rotating the guide wheel. This knife-like compression of the tubing can easily lead to a reduction in the tubing's lifespan. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, this application provides a peristaltic pump that can avoid manual tube loading and unloading, thereby improving tube loading and unloading efficiency and safety.

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] This application provides a peristaltic pump for delivering fluid guided in a hose, comprising:

[0008] The fluid transport body includes an extrusion bed and a drive disc that rotates relative to the extrusion bed. Multiple extrusion rollers are arranged on the drive disc in a circumferential direction. The extrusion rollers cooperate with the extrusion bed to extrude the hose and thus guide the fluid.

[0009] An automatic hose loading and unloading device is used to guide a hose into or out of the extrusion bed at the fluid delivery inlet. It includes a hose guide plate and a drive device. The hose guide plate is provided with a guide plate groove for engaging the hose. The drive device is used to drive the hose guide plate to move up and down in a direction perpendicular to the drive plate.

[0010] Optionally, the driving device includes a rotating shaft and a rotating plate connected to the rotating shaft. A limiting hole is provided on the rotating plate, and the pipeline deflector slides along the limiting hole. The rotation of the rotating plate drives the deflector groove to move up and down in a direction perpendicular to the driving disk.

[0011] Optionally, the rotating shaft is driven to rotate by a drive motor.

[0012] Optionally, the hose is always engaged in the slot of the pipe deflector.

[0013] Optionally, the dial groove has an opening, and the width of the opening of the dial groove is smaller than the diameter of the hose.

[0014] Optionally, it also includes a guide wheel, which is arranged along the ring axis of the extrusion bed, and the outer circumference of the guide wheel is provided with a guide groove for accommodating the hose.

[0015] Optionally, the rotating shaft is fixedly connected to the rotating shaft plate.

[0016] Optionally, it also includes a main motor, the output shaft of which is connected to the drive disk.

[0017] Optionally, the extrusion bed is provided with a limiting hole, and the pipeline guide plate passes through the limiting hole. The limiting hole is used to restrict the pipeline guide plate from moving up and down in a direction perpendicular to the drive disc; or the extrusion bed is provided with a limiting groove, the limiting groove is provided in a direction perpendicular to the drive disc, and the pipeline guide plate is provided with a plug-in block, the plug-in block slides along the limiting groove.

[0018] Compared with the prior art, this application has at least the following beneficial effects:

[0019] This application introduces an automatic tube loading and unloading device at the fluid delivery inlet. The hose is clamped in the guide plate groove. The rotating shaft drives the rotating plate to rotate, which in turn drives the guide plate groove and the hose to move up and down in a direction perpendicular to the drive plate, thereby guiding the tube loading and unloading. The rotation of the drive plate can drive the hose into or out of the gap between the extrusion roller and the extrusion bed, thus achieving automatic tube loading and unloading and avoiding the time-consuming and laborious manual tube loading and unloading. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a peristaltic pump structure in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the automatic tube loading and unloading device in the embodiments of this application;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Hose; 2. Drive disc; 3. Extrusion roller; 4. Guide wheel; 5. Extrusion bed; 6. Automatic tube loading and unloading device; 61. Tube guide plate; 611. Guide plate groove; 62. Rotating shaft; 63. Rotating shaft plate; 631. Shaft hole; 632. Pin; 633. Limiting hole; 64. Drive motor; 7. Main motor. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0026] Example 1

[0027] like Figure 1 As shown, a peristaltic pump for delivering fluid guided in a hose 1 includes:

[0028] The fluid conveying body includes a squeezing bed 5 and a drive disk 2 that rotates relative to the squeezing bed 5. Multiple squeezing rollers 3 are arranged on the drive disk 2 along the circumferential direction. The squeezing rollers 3 cooperate with the squeezing bed 5 to squeeze the hose 1 and thus guide the fluid.

[0029] The automatic pipe loading and unloading device 6 is used to guide the hose 1 into or out of the extrusion bed 5 at the fluid delivery inlet. It includes a pipe guide plate 61 and a drive device. The pipe guide plate 61 is provided with a guide plate groove 611 for engaging the hose 1. The drive device is used to drive the pipe guide plate 61 to move up and down in a direction perpendicular to the drive disc 2.

[0030] By setting an automatic tube loading and unloading device 6 at the fluid delivery inlet, the hose 1 is clamped in the dial plate groove 611. The drive device drives the dial plate groove 611 and the hose 1 to move up and down in a direction perpendicular to the drive disc 2 to guide the tube loading and unloading. When the drive disc 2 rotates, the hose 1 can be driven into or out of the gap between the extrusion roller 3 and the extrusion bed 5, thus realizing automatic tube loading and unloading and avoiding the time-consuming and laborious manual tube loading and unloading.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that the driving device includes a rotating shaft 62 and a rotating shaft plate 63 fixedly connected to the rotating shaft 62 through a shaft hole 631. A limiting hole 633 is provided on the rotating shaft plate 63. The pipe guide plate 61 slides along the limiting hole 633 via a pin 632. The rotation of the rotating shaft plate 63 drives the guide plate groove 611 to move up and down in a direction perpendicular to the driving disk 2. The rotating shaft 62 is driven to rotate by a driving motor 64. The rotating shaft 62 is connected to the output shaft of the driving motor 64 or the output shaft of the driving motor 64 can be used directly as the rotating shaft 62. The driving motor 64 can drive the rotating shaft 62 to rotate, thereby driving the guide plate groove 611 and the hose 1 to move up and down in a direction perpendicular to the driving disk 2, realizing the guidance of the upper and lower pipes.

[0033] The dial plate groove 611 has an opening, the width of which is smaller than the diameter of the hose 1. When replacing the hose 1, the hose 1 can be easily inserted into the dial plate groove 611 through the opening, and the hose 1 is always locked and secured within the dial plate groove 611.

[0034] It also includes a guide wheel 4, which is arranged along the ring axis of the extrusion bed 5, and the outer circumference of the guide wheel 4 is provided with a guide groove for accommodating the hose 1.

[0035] In this embodiment, the extrusion bed 5 is provided with a limiting hole, and the pipeline guide plate 61 passes through the limiting hole. The limiting hole is used to restrict the pipeline guide plate 61 from moving up and down in a direction perpendicular to the drive disk 2. Alternatively, the extrusion bed 2 can be provided with a limiting groove, which is set in a direction perpendicular to the drive disk 2. The pipeline guide plate 61 is provided with a plug-in block, which slides along the limiting groove. As long as the sliding direction of the pipeline guide plate 61 can be restricted, it is acceptable.

[0036] It also includes a main motor 7, whose output shaft is connected to the drive disk 2. The drive disk 2 is driven to rotate by the rotation of the output shaft of the main motor 7.

[0037] During the pipe installation, the pipe guide plate 61 is in the extended state. The hose 1 is installed into the guide plate groove 611. The drive motor 64 is turned on to move the hose 1 towards the drive disc 2, so that the pipe guide plate 61 is in the retracted state. The hose 1 is aligned with the gap between the extrusion roller 3 and the extrusion bed 5. Then the main motor 7 is turned on, and the drive disc 2 drives the extrusion roller 3 and the guide wheel 4 to rotate, which drives the hose 1 into the gap between the extrusion roller 3 and the extrusion bed 5, thus completing the pipe installation.

[0038] When the tube is lowered, the drive motor 64 rotates in the opposite direction, and the rotating shaft plate 63 drives the lower tube deflector 61 to move away from the drive disk 2, causing the tube deflector 61 to change from a retracted state to an extended state. The main motor 7 is turned on to rotate in the opposite direction, and the drive disk 2 rotates. Under the action of the extrusion roller 3 and the guide wheel 4, the hose 1 gradually leaves the gap between the extrusion roller 3 and the extrusion bed 5, thus completing the lowering of the tube.

[0039] This application provides an automatic tube loading and unloading device 6 at the fluid delivery inlet. The hose 1 is clamped in the guide plate groove 611. The rotating shaft 62 drives the rotating shaft plate 63 to rotate, which can drive the guide plate groove 611 and the hose 1 to move up and down in a direction perpendicular to the drive disc 2, thereby guiding the tube loading and unloading. When the drive disc 2 rotates, it can drive the hose 1 into or out of the gap between the extrusion roller 3 and the extrusion bed 5, thus achieving automatic tube loading and unloading and avoiding the time-consuming and laborious manual tube loading and unloading.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A peristaltic pump for delivering fluid guided in a hose, characterized in that, include: The fluid transport body includes an extrusion bed and a drive disc that rotates relative to the extrusion bed. Multiple extrusion rollers are arranged on the drive disc in a circumferential direction. The extrusion rollers cooperate with the extrusion bed to extrude the hose and thus guide the fluid. An automatic hose loading and unloading device is used to guide a hose into or out of the extrusion bed at the fluid delivery inlet. It includes a hose guide plate and a drive device. The hose guide plate is provided with a guide plate groove for engaging the hose. The drive device is used to drive the hose guide plate to move up and down in a direction perpendicular to the drive plate.

2. The peristaltic pump according to claim 1, characterized in that, The driving device includes a rotating shaft and a rotating plate connected to the rotating shaft. A limit hole is provided on the rotating plate. The pipeline toggle plate slides along the limit hole. The rotation of the rotating plate drives the toggle plate groove to move up and down in a direction perpendicular to the driving disk.

3. The peristaltic pump according to claim 2, characterized in that, The rotating shaft is driven to rotate by a drive motor.

4. The peristaltic pump according to claim 1, characterized in that, The extrusion bed is provided with a limiting hole, and the pipeline guide plate passes through the limiting hole. The limiting hole is used to restrict the pipeline guide plate from moving up and down in a direction perpendicular to the drive disc; or the extrusion bed is provided with a limiting groove, the limiting groove is provided in a direction perpendicular to the drive disc, and the pipeline guide plate is provided with a plug-in block, the plug-in block slides along the limiting groove.

5. The peristaltic pump according to claim 1, characterized in that, The hose is always engaged in the slot of the pipe deflector.

6. The peristaltic pump according to claim 1, characterized in that, The dial groove has an opening, and the width of the opening of the dial groove is smaller than the diameter of the hose.

7. The peristaltic pump according to claim 2, characterized in that, It also includes a guide wheel, which is arranged along the ring axis of the extrusion bed, and the outer circumference of the guide wheel is provided with a guide groove for accommodating the hose.

8. The peristaltic pump according to claim 1, characterized in that, The rotating shaft is fixedly connected to the rotating shaft plate.

9. The peristaltic pump according to claim 1, characterized in that, It also includes a main motor, the output shaft of which is connected to the drive disk.

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