A peristaltic pump

Abstract

The present invention discloses a peristaltic pump, comprising: a pump chamber assembly, comprising: a main body; a main shaft, which is arranged in the main body and is rotatably connected to the output shaft of a driving member; a transmission member, comprising a gear, the outer ring of the gear is connected to the rack, and the inner ring of the gear is connected to the first one-way bearing sleeved on the main shaft; a movable part, which is movably arranged on one side of the main body and is connected to the rack; a guide member, which is arranged on the main body and is connected to the rack, and an elastic member is sleeved on the guide member; a pump head assembly, which is rotatably connected to the main shaft; when the driving member drives the main shaft to reverse, the main shaft drives the gear to rotate, so as to drive the movable part connected to the rack to move to form a disassembly chamber of the pipeline assembly with the main body; when the driving member drives the main shaft to rotate forward, the elastic force of the compressed elastic member causes the movable part to move to form a fixed chamber of the pipeline assembly with the main body, and the pump head assembly is driven to rotate to squeeze the pipeline assembly. The above peristaltic pump does not need to add additional power, is convenient for pipeline replacement, and reduces operating costs.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and more specifically, to a peristaltic pump. Background Art

[0002] The peristaltic pump is an extremely important independent unit in the blood purification equipment. It consists of a drive motor, an extrusion pump head and a hose. It pumps fluid by alternately squeezing and releasing the elastic hose of the pump to ensure the smooth progress of extracorporeal circulation.

[0003] When the peristaltic pump is in use, the hose is a consumable that needs to be replaced frequently. Before each blood purification treatment, the patient needs to replace the hose again. In the related art, in order to facilitate the rapid replacement of the hose, one method is to open and close the pump cover to drive the pump chamber to move so as to provide a larger working space for the hose installation. This work requires a large force to open and close the pump cover to drive the pump chamber to move, which is time-consuming and laborious, and improper use of force can easily damage the pump body parts; another method is to add installation limit parts and disassembly limit parts at the inlet and outlet of the hose. When performing the disassembly operation, a separate drive device is used to move the hose from the installation limit part to the disassembly limit part, and then the motor assembly is started to rotate the pump head one circle to disengage the hose. This method requires the addition of an additional drive device, which increases costs and is complicated to operate.

[0004] In summary, how to facilitate the replacement of hoses while reducing operating costs is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a peristaltic pump, which can improve the convenience and speed of pipeline installation and disassembly without adding additional power, reduce manual operation time, and reduce the cost of use.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A peristaltic pump, comprising:

[0008] Pump chamber assembly, comprising:

[0009] Main body;

[0010] A main shaft, disposed in the main body and rotatably connected to the output shaft of the driving member;

[0011] The transmission member comprises a gear, wherein the outer ring of the gear is connected to the rack, and the inner ring of the gear is connected to a first one-way bearing sleeved on the main shaft;

[0012] A movable portion, movably disposed on one side of the main body and connected to the rack;

[0013] A guide member, disposed on the main body and connected to the rack, wherein an elastic member is sleeved on the guide member;

[0014] A pump head assembly, rotatably connected to the main shaft;

[0015] When the driving member drives the main shaft to reverse, the main shaft drives the gear to rotate, so as to drive the movable part connected to the rack to move to form a disassembly and assembly cavity of the pipeline assembly with the main body; when the driving member drives the main shaft to rotate forward, the elastic force of the compressed elastic member causes the movable part to move to form a fixed cavity of the pipeline assembly with the main body, and the pump head assembly is driven to rotate to squeeze the pipeline assembly.

[0016] Preferably, a connecting shaft is provided at the lower end of the movable part, a rack fixing block is connected to the lower end of the connecting shaft, and the rack is provided on the rack fixing block.

[0017] Preferably, a linear bearing is provided in the main body, and the guide member passes through the linear bearing and is connected to the rack fixing block.

[0018] Preferably, a driver mounting plate is mounted on the main body, the driver mounting plate is connected to a control member, and the driver is signal-connected to the control member.

[0019] Preferably, a micro switch is mounted on the main body to limit the moving distance of the movable part, and the micro switch is connected to the control element signal.

[0020] Preferably, the pump chamber assembly further comprises a pump cover which is openably connected to the main body, an induction magnet is arranged inside the pump cover, and a closing detection plate for detecting the induction magnet is arranged on the main body.

[0021] Preferably, the pump head assembly comprises:

[0022] Pump head body;

[0023] A roller, arranged on the pump head body;

[0024] A second one-way bearing is disposed in the pump head body, and the second one-way bearing is rotatably connected to the main shaft.

[0025] Preferably, a speed detection magnet is installed on the pump head body, and a speed detection plate connected to the speed detection magnet signal is installed on the main body.

[0026] Preferably, the pump head assembly further comprises a plunger, and the plunger is disposed in a mounting groove of the main shaft.

[0027] Preferably, the pipeline assembly includes a pipeline fixing piece and a pipeline connected thereto, and the pipeline fixing piece is provided with a groove that cooperates with the clamping block on the main body.

[0028] The peristaltic pump provided by the present invention comprises a pump chamber assembly, a pump head assembly, and a pipeline assembly, wherein the pump head assembly is rotatably connected to the main shaft in the pump chamber assembly, the pump chamber assembly comprises a transmission member, a driving member, a main body, a movable part, and a guide member, the main shaft is rotatably connected to the output shaft of the driving member, a first one-way bearing is sleeved on the outer side of the main shaft, the first one-way bearing is connected to the gear in the transmission member, the gear is connected to the rack, when the driving member drives the main shaft in reverse, the main shaft and the first one-way bearing are stuck, at this time the main shaft drives the first one-way bearing and the gear to rotate, so as to further drive the rack connected to the gear to move, the movable part is movably arranged on one side of the main body and connected to the rack, that is, when the main shaft is reversed, it can drive the movable part to move and form a disassembly and assembly chamber of the pipeline assembly with the main body, at this time the movable part is far away The main body is separated from the main body, providing an operating space for the disassembly and assembly of the pipeline assembly, and the installation and disassembly of the pipeline is simple and quick; in addition, a guide member is provided on the main body, which is connected to the rack and has an elastic member sleeved on its outer side. When the rack is driven by the main shaft to rotate in reverse, the elastic member is compressed. When the driving member drives the main shaft to rotate forward, due to the unidirectionality of the first one-way bearing, the first one-way bearing and the main shaft slip, and the main shaft rotates idly. At this time, the elastic force of the compressed elastic member will drive the movable part to move to form a fixed cavity of the pipeline assembly with the main body. At this time, the movable part automatically approaches the main body under the action of the elastic force, and resets to fix the pipeline assembly in the fixed cavity. At the same time, when the driving member drives the main shaft to rotate forward, the pump head assembly is driven to rotate to squeeze the pipeline assembly to achieve the operation requirements of pumping gas or liquid. The above-mentioned peristaltic pump greatly facilitates the replacement of the pipeline assembly through the automatic retreat and advancement of the movable part without adding additional power, reduces manual operation time, and reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of the peristaltic pump provided by the present invention;

[0031] Figure 2 A schematic diagram of the structure of the pump chamber assembly provided by the present invention;

[0032] Figure 3 A left side view of the pump chamber assembly provided by the present invention;

[0033] Figure 4 for Figure 3 AA section view;

[0034] Figure 5 for Figure 3 BB section view;

[0035] Figure 6 A schematic diagram of the connection between the movable part and the rack fixing block provided by the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the pump head assembly provided by the present invention;

[0037] Figure 8 A left side view of the pump head assembly provided by the present invention;

[0038] Fig. 9 for Figure 8 CC section view;

[0039] Fig.10 This is a schematic diagram of the structure of the pipeline assembly provided by the present invention.

[0040] Figure 1-Figure 10 , the reference numerals include:

[0041] Pump chamber assembly 1, pump head assembly 2, pipeline assembly 3;

[0042] Main body 101, pump cover 102, magnet fixing part 103, induction magnet 104, closure detection plate 105, main shaft 106, deep groove ball bearing 107, first one-way bearing 108, coupling 109, driving part 110, driving part mounting plate 111, gear 112, rack 113, guide part 114, linear bearing 115, elastic part 116, rack fixing block 117, connecting shaft 118, movable part 119, speed detection plate 120, micro switch 121, control part mounting plate 122, control part 123, clamping block 124, pump head main body 201, roller 202, plunger 203, second one-way bearing 204, speed detection magnet 205, pipeline 301, pipeline fixing part 302, groove 303. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The core of the present invention is to provide a peristaltic pump, which can improve the convenience and speed of pipeline installation and disassembly without adding additional power, reduce manual operation time, and reduce labor costs and time costs.

[0045] The peristaltic pump provided by the present invention includes a pump chamber assembly 1, a pump head assembly 2, and a pipeline assembly 3. Figure 1 , Figure 1 This is a schematic diagram of the structure of the peristaltic pump provided by the present invention.

[0046] The pump chamber assembly 1 includes a main body 101, a movable part 119, a main shaft 106, a transmission member, and a guide member 114. Please refer to Figures 2 to 6 .

[0047] The main shaft 106 is disposed in the main body 101, and the output shaft of the driving member 110 is rotatably connected to the main shaft 106 to drive the main shaft 106 to rotate. The main body 101 is provided with a deep groove ball bearing 107, and the main shaft 106 passes through the deep groove ball bearing 107 and is driven by the driving member 110 to rotate in the main body 101. The provision of the deep groove ball bearing 107 can reduce friction, reduce noise generation, and reduce the possibility of component wear.

[0048] The output shaft of the driving member 110 and the main shaft 106 are connected via a coupling 109 to achieve power transmission.

[0049] The transmission parts include a gear 112 and a rack 113. The outer ring of the gear 112 is connected to the rack 113. The inner ring of the gear 112 is connected to the first one-way bearing 108 sleeved on the main shaft 106. The outer ring of the first one-way bearing 108 and the inner ring of the gear 112 are interference fit to ensure the reliable stability of the connection between the two.

[0050] Preferably, the first one-way bearing 108 is a one-way needle roller bearing.

[0051] When the main shaft 106 rotates in reverse, the first one-way bearing 108 and the main shaft 106 are stuck, and the main shaft 106 can drive the first one-way bearing 108 to rotate, thereby further driving the gear 112 to rotate. When the main shaft 106 rotates in the forward direction, the first one-way bearing 108 and the main shaft 106 slip, and the main shaft 106 rotates idly. At this time, the main shaft 106 cannot drive the gear 112 to rotate.

[0052] The movable portion 119 is movably disposed at one side of the main body 101 . The rack 113 in the transmission member is connected to the movable portion 119 . When the rack 113 is driven by the gear 112 , the movable portion 119 can move relative to the main body 101 .

[0053] A guide member 114 is also provided on the main body 101. The guide member 114 is connected to the rack 113 and is sleeved with an elastic member 116. When the main shaft 106 is reversed, the main shaft 106 drives the gear 112 to rotate, thereby driving the movement of the rack 113. At this time, the movable portion 119 is relatively far away from the main body 101. The two can form a disassembly chamber of the pipeline assembly 3, providing a working space for disassembly of the pipeline assembly 3, which is convenient and quick. In addition, when the main shaft 106 is reversed, the movement of the rack 113 can drive the guide member 114 to move to compress the elastic member 116.

[0054] Optionally, the elastic member 116 may be a spring, a tension spring, etc., and the structural form of the guide member 114 is not limited, and may be a rod type, a plate type, etc.

[0055] When the main shaft 106 rotates forward, the main shaft 106 cannot drive the gear 112 to rotate. At this time, the elastic force of the elastic member 116 after being compressed will move the guide member 114 to drive the movable part 119 to move for reset. At this time, the movable part 119 is relatively close to the main body 101, and the two can form a fixed cavity of the pipeline assembly 3.

[0056] The pump head assembly 2 is rotationally connected to the main shaft 106. When the main shaft 106 rotates forward, the pipeline assembly 3 is fixed in the fixed cavity, and the pump head assembly 2 is driven to rotate by the main shaft 106 to squeeze the pipeline assembly 3 to achieve the use requirements of pumping liquid or gas.

[0057] In this embodiment, the connection position and the number of the guide member 114 and the rack 113 are not limited.

[0058] In this embodiment, forward rotation and reverse rotation are two relative directions, which realize the automatic retreat and advance of the movable part 119, and facilitate the replacement of the pipeline assembly 3, but do not limit the counterclockwise or clockwise rotation direction.

[0059] In this embodiment, the driving member 110 is the driving component of the peristaltic pump itself. The flexible use of the gear rack and the elastic member 116 is utilized to realize the flexible movement of the movable part 119. No additional driving member is required. The structure is simple, energy consumption is reduced, the use cost is reduced, time and labor are saved, and replacement and disassembly are simple and quick.

[0060] The peristaltic pump provided by the present invention is not only suitable for blood purification equipment, but can be used in any occasions where liquid or gas needs to be pumped.

[0061] The peristaltic pump comprises a pump chamber assembly 1, a pump head assembly 2, and a pipeline assembly 3, wherein the pump head assembly 2 is rotatably connected to a main shaft 106 in the pump chamber assembly 1, the pump chamber assembly 1 comprises a transmission member, a driving member 110, a main body 101, a movable portion 119, and a guide member 114, the main shaft 106 is rotatably connected to an output shaft of the driving member 110, a first one-way bearing 108 is sleeved on the outer side of the main shaft 106, the first one-way bearing 108 is connected to a gear 112 in the transmission member, and the gear 112 is connected to a rack 113 is connected. When the driving member 110 drives the main shaft 106 in the reverse direction, the main shaft 106 and the first one-way bearing 108 are stuck. At this time, the main shaft 106 drives the first one-way bearing 108 and the gear 112 to rotate, so as to further drive the rack 113 connected to the gear 112 to move. The movable part 119 is movably arranged on one side of the main body 101 and connected to the rack 113, that is, when the main shaft 106 is reversed, it can drive the movable part 119 to move and form a disassembly and assembly cavity of the pipeline assembly 3 with the main body 101. At this time, the movable part 119 is away from the main body 101, providing an operating space for the disassembly and assembly of the pipeline assembly 3, and the installation and disassembly of the pipeline is simple and quick; in addition, a guide member 114 is provided on the main body 101, and the guide member 114 is connected to the rack 113 and an elastic member 116 is sleeved on the outer side thereof. When the rack 113 is driven by the main shaft 106 in reverse rotation, the elastic member 116 is compressed, and when the driving member 110 drives the main shaft 106 to rotate forward, due to the unidirectionality of the first one-way bearing 108, the first one-way bearing 108 is pressed against the main shaft 106. 8 slips with the main shaft 106, and the main shaft 106 idles. At this time, the elastic force of the compressed elastic member 116 will drive the movable part 119 to move to form a fixed cavity of the pipeline assembly 3 with the main body 101. At this time, the movable part 119 automatically approaches the main body 101 under the action of the elastic force to achieve reset to fix the pipeline assembly 3 in the fixed cavity. At the same time, when the driving member 110 drives the main shaft 106 to rotate forward, the pump head assembly 2 is driven to rotate to squeeze the pipeline assembly 3 to achieve the operation demand of pumping gas or liquid. The above-mentioned peristaltic pump, without adding additional power, greatly facilitates the replacement of the pipeline assembly 3 through the automatic retreat and advancement of the movable part 119, reduces manual operation time, and reduces the cost of use.

[0062] On the basis of the above embodiment, a connecting shaft 118 is provided at the lower end of the movable portion 119 , a rack fixing block 117 is connected to the lower end of the connecting shaft 118 , and the rack 113 is provided on the rack fixing block 117 .

[0063] Please refer to Figure 1 , Figure 4 , Figure 5 , Figure 6 The movable portion 119 is connected to the rack fixing block 117 through the connecting shaft 118. The rack fixing block 117 is a component used to connect the rack 113 and is T-shaped as a whole.

[0064] The movement of the rack 113 drives the movement of the rack fixing block 117 , so as to further enable the movable portion 119 to be relatively close to or away from the main body 101 , so as to fix or disassemble the pipeline assembly 3 .

[0065] On the basis of any of the above embodiments, a linear bearing 115 is disposed in the main body 101 , and the guide member 114 passes through the linear bearing 115 and is connected to the rack fixing block 117 .

[0066] Please refer to Figure 4 , Figure 5 , Figure 6 The linear bearing 115 is disposed in the bearing mounting hole of the main body 101 , and the guide member 114 is sleeved with the elastic member 116 and then inserted into the linear bearing 115 and connected to the rack fixing block 117 .

[0067] The use of the linear bearing 115 can provide a certain guiding effect for the movement of the guide member 114, reduce wear and reduce noise.

[0068] Preferably, two guide members 114 are symmetrically provided on both sides of the rack fixing block 117 to ensure reliable stability of the movable part 119 connected to the rack fixing block 117 during movement.

[0069] On the basis of any of the above embodiments, a driver mounting plate 111 is installed on the main body 101 , the driver mounting plate 111 is connected to the control component 123 , and the driver 110 is signal-connected to the control component 123 .

[0070] Please refer to Figure 2 , Figure 3 , Figure 5 The driving component mounting plate 111 is disposed on the main body 101 for mounting the driving component 110 . The driving component mounting plate 111 is connected to the control component mounting plate 122 . The control component 123 is connected to the control component mounting plate 122 through a copper column.

[0071] The driving component 110 is connected to the control component 123 by signals, and the control component 123 can control the forward rotation, reverse rotation, start and stop and other operations of the driving component 110.

[0072] In this embodiment, the driving component 110 is preferably a motor, and the control component 123 is a PCB (Printed Circuit Board) control board.

[0073] On the basis of any of the above embodiments, a micro switch 121 is installed on the main body 101 to limit the moving distance of the movable part 119 , and the micro switch 121 is connected to the control element 123 by signal.

[0074] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 The micro switch 121 installed on the main body 101 is used to limit the moving distance of the movable part 119. The micro switch 121 is connected to the control part 123 by signal, and can transmit the arrival signal of the movable part 119 to the control part 123 in time.

[0075] When the rack fixing block 117 moves to make the movable part 119 relatively away from the main body 101, when the rack fixing block 117 touches the micro switch 121, the movable part 119 has moved to the right position. At this time, the control part 123 controls the driving part 110 to stop rotating and keep it powered on after receiving the right position signal. At this time, the pipeline assembly 3 can be disassembled and replaced quickly and accurately.

[0076] Based on any of the above embodiments, the pump chamber assembly 1 further includes a pump cover 102 which is openably connected to the main body 101 , an induction magnet 104 is provided in the pump cover 102 , and a closing detection plate 105 for detecting the induction magnet 104 is provided on the main body 101 .

[0077] Please refer to Figure 1 , Figure 2 , Figure 5 The pump cover 102 is connected to the main body 101 in an openable and closable manner. When the pipeline assembly 3 needs to be disassembled and replaced, the pump cover 102 can be manually opened to perform the operation.

[0078] An induction magnet 104 is provided in the pump cover 102, and the induction magnet 104 is mounted on the magnet fixing part 103. A closing detection plate 105 is provided on the main body 101, and a sensing chip is provided on the closing detection plate 105. When the pump cover 102 is closed, if the sensing chip can detect the signal of the induction magnet 104, the pump cover 102 is safely closed. If the sensing chip does not detect the signal of the induction magnet 104, the pump cover 102 is not closed or is not safely closed.

[0079] The closing detection plate 105 can be connected to the control component 123 by signal, so that the control component 123 can receive the opening and closing signal of the pump cover 102 in time.

[0080] Based on any of the above embodiments, the pump head assembly 2 includes: a pump head body 201; a roller 202, which is arranged on the pump head body 201; a second one-way bearing 204, which is arranged in the pump head body 201, and the second one-way bearing 204 is rotatably connected to the main shaft 106.

[0081] Please refer to Figure 1 , Figure 4 , Figures 7 to 9 The pump head assembly includes a pump head body 201, and a roller 202 is provided on the pump head body 201. When the pump head body 201 rotates, the roller 202 can squeeze the pipeline assembly to realize the liquid or gas delivery operation.

[0082] A second one-way bearing 204 is provided in the pump head body 201. The outer ring of the second one-way bearing 204 is interference fit with the inner hole of the pump head body 201. The inner ring of the second one-way bearing 204 is rotatably connected to the main shaft 106. When the main shaft 106 rotates forward, the main shaft 106 and the second one-way bearing 204 are stuck to achieve continuous forward rotation of the pump head assembly 2 driven by the rotation of the main shaft 106. The roller 202 on the pump head assembly 2 alternately squeezes and releases the pipeline assembly 3 to pump liquid or gas.

[0083] When the main shaft 106 rotates reversely, the second one-way bearing 204 and the main shaft 106 slip, and the main shaft 106 does not drive the second one-way bearing 204 to rotate, that is, at this time, the pump head assembly 2 does not rotate as a whole.

[0084] In this embodiment, the second one-way bearing 204 can be a needle roller, a ball roller, or a roller bearing, preferably a one-way needle roller bearing.

[0085] On the basis of any of the above embodiments, a speed detection magnet 205 is installed on the pump head body 201 , and a speed detection plate 120 connected to the speed detection magnet 205 by signal is installed on the main body 101 .

[0086] Please refer to Figure 1 , Figure 4 , Fig. 9 The speed detection magnet 205 installed on the pump head body 201 rotates with the pump head assembly 2. When the speed detection magnet 205 rotates to the detection area of ​​the speed detection plate 120 set on the main body 101, the sensing chip on the speed detection plate 120 can read the detection signal of the speed detection magnet 205 to obtain the rotational speed information of the pump head assembly 2.

[0087] The speed detection board 120 is connected to the control component 123 by signal so as to transmit the rotation speed of the pump head assembly 2 to the control component 123 in real time. If the rotation speed is abnormal, the user can be reminded in time to ensure the safety of the operation.

[0088] On the basis of any of the above embodiments, the pump head assembly 2 further includes a plunger 203 , and the plunger 203 is disposed in a mounting groove of the main shaft 106 .

[0089] Please refer to the figure, the plunger 203 is arranged on the pump head body 201, and the position limitation between the pump chamber assembly 1 and the pump head assembly 2 is achieved by the plunger 203 being stuck in the installation groove of the main shaft 106 of the pump chamber assembly 1.

[0090] On the basis of any of the above embodiments, the pipeline assembly 3 includes a pipeline fixing member 302 and a pipeline 301 connected thereto. The pipeline fixing member 302 is provided with a groove 303 that cooperates with the clamping block 124 on the main body 101 .

[0091] Please refer to Figure 1 , Figure 2 , Fig.10 The pipeline 301 is connected to the pipeline fixing member 302, and the groove 303 on the pipeline fixing member 32 is clamped on the clamping block 124 on the main body 101 to complete the precise positioning installation of the pipeline assembly 3 and improve the installation and replacement efficiency.

[0092] The above is the introduction to the structure of the peristaltic pump provided by the present invention. Next, its overall use process is introduced in detail:

[0093] The driving member 110 is controlled to reverse by the control member 123 to realize the reversal of the main shaft 106. The main shaft 106 reverses to drive the first one-way bearing 108 and the gear 112 to reverse, and further pushes the rack 113 to move, so as to drive the rack fixing block 117 and the movable part 119 to move away from the main body 101, and the elastic member 116 is compressed; when the movable part 119 moves to a certain distance, the rack fixing block 117 triggers the micro switch 121, and the micro switch 121 transmits the signal to the control member 123, and the control member 123 controls the driving member 110 to stop rotating and keep it in a power-off state; manually open the pump cover 102, install the pipeline assembly 3 in the main body 101, and then close the pump cover 102, and detect whether it is completely closed through the closing detection plate 105;

[0094] Furthermore, the driving member 110 is controlled to rotate forwardly through the control member 123, and the main shaft 106 rotates forwardly. When the main shaft 106 rotates forwardly, the first one-way bearing 108 and the main shaft 106 slip, and the elastic force of the compression of the elastic member 116 causes the guide member 114 to move toward the direction close to the main body 101, so as to drive the rack fixing block 117 and the movable part 119 to reset, and the forward rotation of the main shaft 106 can realize the locking of the main shaft 106 and the second one-way bearing 204 of the pump head assembly 2, so as to drive the pump head assembly 2 to rotate forward continuously, and the roller 202 on the pump head assembly 2 alternately squeezes and releases the pipeline 301 to pump liquid or gas.

[0095] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0096] The above is a detailed introduction to a peristaltic pump provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A peristaltic pump, characterized in that: include: The pump chamber assembly (1) comprises: Main body (101); A main shaft (106) is disposed in the main body (101) and is rotatably connected to an output shaft of the driving member (110); A transmission member, comprising a gear (112), wherein an outer ring of the gear (112) is connected to a rack (113), and an inner ring of the gear (112) is connected to a first one-way bearing (108) sleeved on the main shaft (106); A movable portion (119) movably disposed on one side of the main body (101) and connected to the rack (113); A guide member (114) is provided on the main body (101) and connected to the rack (113); an elastic member (116) is sleeved on the guide member (114); A pump head assembly (2) rotatably connected to the main shaft (106); When the driving member (110) drives the main shaft (106) to rotate in reverse, the main shaft (106) drives the gear (112) to rotate, thereby driving the movable part (119) connected to the rack (113) to move so as to form a disassembly chamber of the pipeline assembly (3) with the main body (101); when the driving member (110) drives the main shaft (106) to rotate in forward direction, the elastic force of the compressed elastic member (116) causes the movable part (119) to move so as to form a fixed chamber of the pipeline assembly (3) with the main body (101), and the pump head assembly (2) is driven to rotate so as to squeeze the pipeline assembly (3); A drive component mounting plate (111) is mounted on the main body (101), the drive component mounting plate (111) is connected to a control component (123), and the drive component (110) is signal-connected to the control component (123); A micro switch (121) is mounted on the main body (101) and is used to limit the moving distance of the movable part (119); the micro switch (121) is signal-connected to the control element (123).

2. The peristaltic pump according to claim 1, characterized in that: A connecting shaft (118) is provided at the lower end of the movable portion (119), a rack fixing block (117) is connected to the lower end of the connecting shaft (118), and the rack (113) is provided on the rack fixing block (117).

3. The peristaltic pump according to claim 2, characterized in that: A linear bearing (115) is provided in the main body (101), and the guide member (114) passes through the linear bearing (115) and is connected to the rack fixing block (117).

4. The peristaltic pump according to any one of claims 1 to 3, characterized in that: The pump chamber assembly (1) further comprises a pump cover (102) which is openably connected to the main body (101), an induction magnet (104) being arranged inside the pump cover (102), and a closing detection plate (105) for detecting the induction magnet (104) being arranged on the main body (101).

5. The peristaltic pump according to claim 4, characterized in that: The pump head assembly (2) comprises: Pump head body (201); A roller (202) is provided on the pump head body (201); A second one-way bearing (204) is disposed in the pump head body (201), and the second one-way bearing (204) is rotatably connected to the main shaft (106).

6. The peristaltic pump according to claim 5, characterized in that: A speed detection magnet (205) is mounted on the pump head body (201), and a speed detection plate (120) connected to the speed detection magnet (205) by signal is mounted on the main body (101).

7. The peristaltic pump according to claim 6, characterized in that: The pump head assembly (2) further comprises a plunger (203), wherein the plunger (203) is arranged in a mounting groove of the main shaft (106).

8. The peristaltic pump according to claim 7, characterized in that: The pipeline assembly (3) comprises a pipeline fixing piece (302) and a pipeline (301) connected thereto, wherein the pipeline fixing piece (302) is provided with a groove (303) that cooperates with a clamping block (124) on the main body (101).

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