Miniature pulseless peristaltic pump

Abstract

The utility model discloses a miniature pulseless peristaltic pump which comprises a shell and a self-checking mechanism, a motor is arranged in the shell, a cam is connected to a transmission shaft and corresponds to a circulating air supply mechanism, and a pumping mechanism comprises a disc, a fixing block, a ball, a corrugated pipe, a water outlet valve and a water inlet valve. And meanwhile, a ball is connected with the disc through a fixing block, the ball makes contact with a corrugated pipe, the corrugated pipe is arranged in the second equipment cavity, and the self-checking mechanism is arranged on one side of the pumping mechanism. According to the micro pulseless peristaltic pump, the control panel is operated to start the air pump, the air pump continuously pumps air into the corrugated pipe through the one-way pipeline, and the pressure sensor detects the internal pressure of the pipeline at the moment, so that the situation that a conveying medium leaks due to damage of the corrugated pipe is avoided, and then pollution and damage of the conveying medium to internal parts of the corrugated pipe are prevented; therefore, the purpose of self-maintenance of the pump pipe is achieved, and the functionality of the pump pipe is enriched.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, in particular to a micro-pulsation-free peristaltic pump. Background Art

[0002] A peristaltic pump consists of three parts: the drive, the pump head, and the hose. A peristaltic pump is like squeezing a hose full of fluid with your fingers. As your fingers slide forward, the fluid moves forward. A peristaltic pump works on the same principle, except that the fingers are replaced by balls. Fluid is pumped by alternately squeezing and releasing the pump's elastic delivery hose. Just like squeezing a hose with two fingers, as the fingers move, negative pressure is formed in the tube, and the liquid flows accordingly. A pulsationless peristaltic pump is a type of peristaltic pump. After searching, it is found that a typical micro peristaltic pump in the prior art is a pulsationless peristaltic pump such as publication number CN115875248A, which includes: a winding assembly, a hose and a ball assembly; the winding assembly is provided with: a liquid outlet curve portion and a progressive curve portion 1; the liquid outlet curve portion and the progressive curve portion are concentrically spirally connected; the hose is wound around the liquid outlet curve portion and the progressive curve portion 1; the ball assembly rotates around the common central axis of the liquid outlet curve portion and the progressive curve portion 1, the ball assembly is always completely pressed against the hose wound on the liquid outlet curve portion, and at the same time, the ball assembly is pressed against the hose wound on the progressive curve portion 1 by an equal amount of space loosening within an equal rotation angle difference. Its main feature is that a progressive curve portion is set to evenly disperse the negative liquid output caused by the reflux caused by the sudden change of the cavity in the liquid output curve portion within each angle during the cyclic rotation of the ball assembly around the liquid output curve portion; and because the liquid output generated by the cyclic pressing of the ball assembly on the liquid output curve portion is constant, the two stable linear liquid flows are merged together to ensure the pulsation-free transmission of the peristaltic pump.

[0003] In summary, most of the existing pulsation-free peristaltic pumps do not have a self-checking function, which may easily cause the corrugated hose to be squeezed and damaged, thereby causing leakage of the conveying medium. In view of the above problems, it is necessary to improve the existing equipment. Utility Model Content

[0004] The utility model aims to provide a miniature pulsation-free peristaltic pump to solve the problem that most of the existing pulsation-free peristaltic pumps mentioned in the above background technology do not have a self-checking function, so that the corrugated hose is easily squeezed and damaged, resulting in leakage of the conveying medium.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro pulseless peristaltic pump, comprising a housing and a self-checking mechanism,

[0006] A motor is arranged inside the shell, and the output end of the motor is connected to the pumping mechanism through a transmission shaft, a cam is connected to the transmission shaft, and the cam is arranged corresponding to the circulating air supply mechanism, the pumping mechanism includes a disc, a fixed block, a ball, a bellows, a water outlet valve and a water inlet valve, and a ball is arranged on the outside of the disc, and the ball is connected to the disc through a fixed block, the ball is in contact with the bellows, and the bellows is arranged inside the second equipment cavity, and the self-inspection mechanism is arranged on one side of the pumping mechanism, and the self-inspection mechanism is connected to the first shell.

[0007] Preferably, heat dissipation holes are provided on the shell, and a maintenance plate is connected to one side wall of the shell by bolts, and handles are symmetrically provided on the top of the shell.

[0008] Preferably, the cam and the circulating air supply mechanism are both arranged inside the first equipment cavity, and the first equipment cavity is opened inside the first shell.

[0009] Preferably, the balls are distributed in an annular array on the outer edge of the disc, and the balls are in contact with the outer wall of the bellows.

[0010] Preferably, a water outlet valve and a water inlet valve are connected to the bellows, and the water inlet valve is connected to the self-test mechanism via a one-way pipe.

[0011] Preferably, the self-inspection mechanism includes a baffle, an air pump, a one-way valve and a connector, and a third equipment cavity is opened on the inner side of the baffle, and an air pump is installed in the third equipment cavity.

[0012] Preferably, the baffle is provided with connectors distributed in a rectangular array, and the baffle is connected to the first shell through the connectors, a control panel is installed on the outer wall of the first shell, and a warning light is provided on the control panel.

[0013] Preferably, the air pump is connected to the bellows via a one-way pipe, and the one-way pipe is connected to a one-way valve and a pressure sensor.

[0014] Preferably, the circulating air supply mechanism includes a movable plate, an airbag, a mounting frame and a through hole, and the movable plate is connected to the mounting frame through the airbag, the movable plate is slidably connected to the inside of the first equipment cavity, and a through hole is opened on the first equipment cavity, and the through hole is arranged corresponding to the exhaust port of the airbag.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the micro pulseless peristaltic pump,

[0016] (1) The utility model can effectively solve the problem that most existing pulseless peristaltic pumps do not have the self-checking function through the coordinated use of the self-checking mechanism and the pumping mechanism, which makes it easy for the corrugated hose to be squeezed and damaged, thereby causing the leakage of the conveying medium. After the device is used, the control panel is operated to start the air pump, and the air pump continuously pumps gas into the interior of the bellows through the one-way pipe. At this time, the pressure sensor detects the internal pressure of the pipe, and thereby avoids the bellows from leaking the conveying medium due to damage, thereby preventing the conveying medium from polluting and damaging its internal parts, that is, achieving the purpose of self-maintenance of the pump tube and enriching its functionality. In addition, the motor drives the disc to rotate through the transmission shaft and synchronously drives multiple groups of balls to rotate through the fixed block. The multiple groups of balls rotate and squeeze the bellows, so that the medium inside the bellows flows for conveying. The air pump continuously pumps gas into the interior of the bellows through the one-way pipe, thereby playing a role in auxiliary conveying, thereby ensuring the continuity and efficiency of conveying and optimizing the structure of the device;

[0017] (2) The utility model can effectively solve the problem that the motor of the existing non-pulsating peristaltic pump mainly dissipates heat through the heat dissipation holes, and is prone to overheating failure due to low heat dissipation efficiency after long-term operation through the coordinated use of the circulating air supply mechanism and the cam. When the motor drives the disc to rotate through the transmission shaft, the cam follows the rotation. When the convex point of the cam rotates to the moving plate, it accumulates and causes extrusion. The compressed moving plate will compress the airbag, and then the gas inside the airbag will be discharged to the inside of the shell through the through hole, so that the heat emitted by the motor when working is quickly discharged through the heat dissipation holes, and the entire auxiliary heat dissipation operation does not require additional driving equipment to drive. Similarly, when the convex point of the cam rotates away from the moving plate, the compressed airbag is deformed and stretched due to the end of compression, so that the external gas automatically fills into the compressed airbag through the one-way air inlet, thereby providing conditions for the next exhaust operation;

[0018] (3) The utility model can effectively solve the problem that most of the existing pulseless peristaltic pumps are of one-piece structure and have a single disassembly and maintenance position, which makes it inconvenient to carry out maintenance work through the coordinated use of connecting parts and maintenance plates. The staff can remove the baffle and the maintenance plate from different positions of the device by removing the connecting parts and bolts according to the maintenance needs, and then the internal parts can be inspected, and the disassembly process is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the connection relationship between the pumping mechanism and the first housing of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the pumping mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 5 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 6 It is an overall schematic diagram of the self-test mechanism of the utility model.

[0025] In the figure: 1. casing; 2. motor; 3. transmission shaft; 4. cam; 5. pumping mechanism; 501. disc; 502. fixing block; 503. ball; 504. bellows; 505. water outlet valve; 506. water inlet valve; 6. first shell; 7. first equipment cavity; 8. second equipment cavity; 9. third equipment cavity; 10. self-test mechanism; 1001. baffle; 1002. air pump; 1003. one-way valve; 1004. connector; 11. circulating air supply mechanism; 1101. movable plate; 1102. air bag; 1103. mounting bracket; 1104. through hole; 12. handle; 13. heat dissipation hole; 14. inspection panel; 15. control panel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 , the utility model provides a technical solution:

[0028] Embodiment 1

[0029] A miniature pulseless peristaltic pump, wherein a motor 2 is arranged inside a housing 1, and the output end of the motor 2 is connected to a pumping mechanism 5 via a transmission shaft 3, a cam 4 is connected to the transmission shaft 3, and the cam 4 is arranged corresponding to a circulating air supply mechanism 11, the pumping mechanism 5 comprises a disc 501, a fixing block 502, a ball 503, a bellows 504, a water outlet valve 505 and a water inlet valve 506, and a ball 503 is arranged on the outer side of the disc 501, and the ball 503 is connected to the disc 501 via the fixing block 502, the ball 503 is in contact with the bellows 504, and the bellows 504 is arranged inside a second equipment cavity 8, and a self-inspection mechanism 10 is arranged on one side of the pumping mechanism 5, and the self-inspection mechanism 10 is connected to a first shell 6.

[0030] In a further example, a heat dissipation hole 13 is opened on the shell 1, and a maintenance plate 14 is connected to one side wall of the shell 1 by bolts. At the same time, a handle 12 is symmetrically arranged on the top of the shell 1. Compared with the existing pulsation-free peristaltic pump, the overall structure of this device is small and compact, and the setting of the handle 12 improves the portability of the device.

[0031] In a further example, the cam 4 and the circulating air supply mechanism 11 are both arranged inside the first equipment chamber 7 , and the first equipment chamber 7 is opened inside the first shell 6 .

[0032] In a further example, the balls 503 are distributed in an annular array on the outer edge of the disk 501 , and the balls 503 are in contact with the outer wall of the bellows 504 .

[0033] In a further example, a water outlet valve 505 and a water inlet valve 506 are connected to the bellows 504, and the water inlet valve 506 is connected to the self-inspection mechanism 10 through a one-way pipe. The motor 2 drives the disc 501 to rotate through the transmission shaft 3 and synchronously drives the multiple groups of balls 503 to rotate through the fixed block 502. The multiple groups of balls 503 rotate and squeeze the bellows 504, so that the medium inside the bellows 504 flows to perform transportation work.

[0034] In a further example, the self-test mechanism 10 includes a baffle 1001 , an air pump 1002 , a one-way valve 1003 and a connector 1004 , and a third equipment cavity 9 is opened on the inner side of the baffle 1001 , and an air pump 1002 is installed in the third equipment cavity 9 .

[0035] In a further example, connectors 1004 are distributed on the baffle 1001 in a rectangular array, and the baffle 1001 is connected to the first shell 6 through the connector 1004. A control panel 15 is installed on the outer wall of the first shell 6, and a warning light is provided on the control panel 15.

[0036] In a further example, the air pump 1002 is connected to the bellows 504 through a one-way pipe, and the one-way pipe is connected to a one-way valve 1003 and a pressure sensor. The air pump 1002 continuously pumps gas into the interior of the bellows 504 through the one-way pipe, thereby achieving the purpose of auxiliary transportation. At the same time, the setting of the one-way valve 1003 prevents the liquid inside the bellows 504 from flowing back during the auxiliary transportation process.

[0037] In a further example, the circulating air supply mechanism 11 includes a moving plate 1101, an air bag 1102, a mounting frame 1103 and a through hole 1104, and the moving plate 1101 is connected to the mounting frame 1103 through the air bag 1102, the moving plate 1101 is slidably connected to the inside of the first equipment cavity 7, and the first equipment cavity 7 is provided with a through hole 1104, and the through hole 1104 is correspondingly arranged with the exhaust port of the air bag 1102, and the air bag 1102 is connected with a one-way air intake valve and a one-way exhaust valve, when the convex point of the cam 4 rotates to the moving plate 1101 The accumulation causes extrusion, and the compressed moving plate 1101 will compress the airbag 1102, and then the gas inside the airbag 1102 will be discharged to the inside of the shell 1 through the through hole 1104, so that the heat emitted by the motor 2 when working can be quickly discharged through the heat dissipation hole 13, and the entire auxiliary heat dissipation operation does not require additional driving equipment to drive. Similarly, when the convex point of the cam 4 rotates away from the moving plate 1101, the compressed airbag 1102 is deformed and stretched due to the end of compression, so that the external gas automatically fills into the compressed airbag 1102 through the one-way air inlet.

[0038] Embodiment 2

[0039] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0040] A method for operating a micro-pulsation-free peristaltic pump comprises the following operating steps:

[0041] S1: First, connect the two ends of the bellows 504 to the external pipes, connect the power supply operation control panel 15 to start the device, and the motor 2 drives the cam 4 and the disc 501 to rotate through the transmission shaft 3. When the disc 501 rotates, it drives the ball 503 to rotate through the fixed block 502. The ball 503 rotates and squeezes the bellows 504, so that the liquid inside the bellows 504 flows and is discharged through the outlet valve 505;

[0042] S2: The air pump 1002 continuously pumps gas into the interior of the bellows 504 through the one-way pipe, thereby achieving the purpose of auxiliary delivery. At the same time, the one-way valve 1003 is set to prevent the liquid inside the bellows 504 from flowing back during the auxiliary delivery process;

[0043] S3: The cam 4 rotates synchronously with the transmission shaft 3. When the convex point of the cam 4 rotates to the moving plate 1101, it accumulates and causes extrusion. The compressed moving plate 1101 compresses the airbag 1102, and then the gas inside the airbag 1102 is discharged to the inside of the housing 1 through the through hole 1104, so that the heat emitted by the motor 2 when working is quickly discharged through the heat dissipation hole 13;

[0044] S4: After the device is used, the staff can control the water outlet valve 505 and the water inlet valve 506 to close, and then operate the control panel 15 to start the air pump 1002. The air pump 1002 continuously pumps gas into the interior of the bellows 504 through the one-way pipe. At this time, the pressure sensor detects the internal pressure of the pipe, and thereby realizes the self-inspection of the sealing action of the device.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A micro pulseless peristaltic pump, comprising a housing (1) and a self-test mechanism (10), characterized in that: A motor (2) is arranged inside the housing (1), and the output end of the motor (2) is connected to a pumping mechanism (5) via a transmission shaft (3); a cam (4) is connected to the transmission shaft (3), and the cam (4) is arranged corresponding to the circulating air supply mechanism (11); the pumping mechanism (5) comprises a disc (501), a fixing block (502), a ball (503), a bellows (504), a water outlet valve (505) and a water inlet valve (506); a ball (503) is arranged on the outside of the disc (501), and the ball (503) is connected to the disc (501) via the fixing block (502); the ball (503) is in contact with the bellows (504), and the bellows (504) is arranged inside the second equipment chamber (8); the self-testing mechanism (10) is arranged on one side of the pumping mechanism (5), and the self-testing mechanism (10) is connected to the first housing (6).

2. A micro pulseless peristaltic pump according to claim 1, characterized in that: The shell (1) is provided with heat dissipation holes (13), and a side wall of the shell (1) is connected to an inspection plate (14) by bolts, and a handle (12) is symmetrically arranged on the top of the shell (1).

3. A micro pulseless peristaltic pump according to claim 1, characterized in that: The cam (4) and the circulating air supply mechanism (11) are both arranged inside the first equipment chamber (7), and the first equipment chamber (7) is opened inside the first shell (6).

4. A micro pulseless peristaltic pump according to claim 1, characterized in that: The balls (503) are distributed in an annular array on the outer edge of the disc (501), and the balls (503) are in contact with the outer wall of the bellows (504).

5. A micro pulseless peristaltic pump according to claim 1, characterized in that: The bellows (504) is connected to a water outlet valve (505) and a water inlet valve (506), and the water inlet valve (506) is connected to the self-test mechanism (10) via a one-way pipeline.

6. A micro pulseless peristaltic pump according to claim 1, characterized in that: The self-inspection mechanism (10) comprises a baffle (1001), an air pump (1002), a one-way valve (1003) and a connecting piece (1004), and a third equipment cavity (9) is provided inside the baffle (1001), and an air pump (1002) is installed inside the third equipment cavity (9).

7. A micro pulseless peristaltic pump according to claim 6, characterized in that: Connectors (1004) are distributed on the baffle (1001) in a rectangular array, and the baffle (1001) is connected to the first shell (6) via the connector (1004); a control panel (15) is installed on the outer wall of the first shell (6), and a warning light is provided on the control panel (15).

8. A micro pulseless peristaltic pump according to claim 6, characterized in that: The air pump (1002) is connected to the bellows (504) via a one-way pipe, and the one-way pipe is connected to a one-way valve (1003) and a pressure sensor.

9. A micro pulseless peristaltic pump according to claim 1, characterized in that: The circulating air supply mechanism (11) comprises a movable plate (1101), an air bag (1102), a mounting frame (1103) and a through hole (1104), wherein the movable plate (1101) is connected to the mounting frame (1103) via the air bag (1102), the movable plate (1101) is slidably connected to the interior of the first equipment cavity (7), and the first equipment cavity (7) is provided with a through hole (1104), and the through hole (1104) is arranged corresponding to the exhaust port of the air bag (1102).

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