Double-inlet and double-outlet peristaltic pump

Abstract

The utility model discloses a double-inlet double-outlet peristaltic pump, which comprises a pump head body, a plurality of flexible water paths for pumping water are arranged in the pump head body, the flexible water paths comprise at least one first flexible water path and at least one second flexible water path, the water flow direction of the first flexible water path is opposite to that of the second flexible water path, and the water flow direction of the second flexible water path is opposite to that of the first flexible water path. A first one-way water flow control structure and a second one-way water flow control structure are arranged on the first flexible water way and the second flexible water way correspondingly, and water flows through the first flexible water way and the second flexible water way alternately under the action of the first one-way water flow control structure and the second one-way water flow control structure. Different liquid materials can be conveyed only through one peristaltic pump, the number of pumps does not need to be increased, and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid conveying equipment, in particular to a double-inlet and double-outlet peristaltic pump. Background Art

[0002] Peristaltic pumps are specialized positive displacement pumps widely used in the chemical, food, and pharmaceutical industries. They feature an integrated pump body and delivery pipeline, offering high infusion accuracy. Multiple delivery pipelines can be configured to increase flow rate, depending on the required pumping volume. The pump operates by rotating a motor-driven frame equipped with multiple rotating rollers, which squeeze an internal elastic hose to pump water.

[0003] Even if the existing peristaltic pump has multiple delivery pipes, when two different materials need to be delivered at different times, the current method is to use two peristaltic pumps to achieve this, which increases the number of peristaltic pumps and leads to an increase in cost. Utility Model Content

[0004] The purpose of the utility model is to provide a double-inlet and double-outlet peristaltic pump, which can transport different materials when needed at different times through one peristaltic pump, without increasing the number of pumps, which is conducive to reducing costs.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions:

[0006] A double-inlet and double-outlet peristaltic pump includes a pump head body, in which a plurality of flexible water paths for pumping water are provided, the flexible water paths including at least one first flexible water path and at least one second flexible water path, the water flow direction of the first flexible water path being opposite to the water flow direction of the second flexible water path, the first flexible water path and the second flexible water path being respectively provided with a first one-way water flow control structure and a second one-way water flow control structure, under the action of the first one-way water flow control structure and the second one-way water flow control structure, the first flexible water path and the second flexible water path alternately pass water.

[0007] In this solution, at least one first flexible water channel and at least one second flexible water channel are provided in the pump head body, and the water flow directions of the first flexible water channel and the second flexible water channel are distributed in opposite directions, which is equivalent to the water inlet end and the water outlet end of the first flexible water channel corresponding to the water outlet end and the water inlet end of the second flexible water channel, and the water inlet end of the first flexible water channel and the water outlet end of the second flexible water channel are located on the same side. At the same time, a first one-way water flow control structure and a second one-way water flow control structure are respectively provided at the water outlet ends of the first flexible water channel and the second flexible water channel. The two one-way water flow control structures respectively control the on-off of the corresponding water channels. Under the action of the first flexible waterway and the second flexible waterway, the water outlet ends can only discharge water but not take in water, and the water inlet ends of the two waterways respectively transport different materials. Since the first flexible waterway and the second flexible waterway pass water alternately, when the water inlet end of the first flexible waterway starts to absorb water, the second flexible waterway cannot absorb water under the action of the second one-way water flow control structure. When the water inlet end of the second flexible waterway starts to absorb water, the first flexible waterway cannot absorb water under the action of the first one-way water flow control structure. Therefore, one pump can be used to pump different liquid materials at different times without increasing the number of pumps, which is conducive to reducing costs.

[0008] Optionally, the first flexible waterway is located above the second flexible waterway, the water flow direction of the first flexible waterway is clockwise, and the water flow direction of the second flexible waterway is counterclockwise. The first flexible waterway has a first water inlet and a first water outlet at both ends located on the outside of the pump head body, and the second flexible waterway has a second water inlet and a second water outlet at both ends located on the outside of the pump head body. The first water inlet corresponds to the second water outlet, and the first water outlet corresponds to the second water inlet. The first one-way water flow control structure is arranged at the first water outlet, and the second one-way water flow control structure is arranged at the second water outlet.

[0009] Optionally, the first flexible water circuit includes a first elastic hose, which is U-shaped and arranged in the pump head body, and the two ends of the first elastic hose are respectively connected to a first water inlet connector and a first water outlet connector clamped on the pump head body, the first water inlet is arranged at the water inlet end of the first water inlet connector, the first water outlet is arranged at the water outlet end of the first water outlet connector, and the first unidirectional water flow control structure is arranged inside the first water outlet connector.

[0010] Optionally, the first one-way water flow control structure includes a first control ball and a first spring. The first control ball is movably arranged in a first water flow cavity inside the first water outlet joint. The first water flow cavity conducts the water path between the first water inlet and the first water outlet. One end of the first spring acts on the first control ball, and the other end acts on the inner wall of the first water outlet joint. The side wall of the first water flow cavity is provided with a first water flow groove connected to the first water outlet. The first control ball controls the connection or blocking of the water path between the first water inlet and the first water outlet under the combined action of the elastic force of the first spring and the water pressure inside the first elastic hose.

[0011] Optionally, both ends of the first water outlet joint and the first water inlet joint are provided with a first connecting pipe with a cone, and the first water outlet joint and the first water inlet joint are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body. The first water outlet joint includes a joint 1 and a joint 2 that are clamped to each other, and a first sealing ring is pressed between the joint 1 and the joint 2, and a first pad is provided between the left side of the joint 1 and the inner wall of the pump head body and between the right side of the joint 2 and the inner wall of the pump head body.

[0012] Optionally, the second flexible water circuit includes a second elastic hose, which is U-shaped and arranged in the pump head body, and the two ends of the second elastic hose are respectively connected to a second water inlet connector and a second water outlet connector clamped on the pump head body, the second water inlet is arranged at the water inlet end of the second water inlet connector, the second water outlet is arranged at the water outlet end of the second water outlet connector, and the second unidirectional water flow control structure is arranged inside the second water outlet connector.

[0013] Optionally, the second unidirectional water flow control structure includes a second control ball and a second spring. The second control ball is movably arranged in a second water flow chamber inside the second water outlet joint. The second water flow chamber conducts the water path between the second water inlet and the second water outlet. One end of the second spring acts on the second control ball, and the other end acts on the inner wall of the second water outlet joint. The side wall of the second water flow chamber is provided with a second water flow groove connected to the second water outlet. The second control ball controls the connection or blocking of the water path between the second water inlet and the second water outlet under the combined action of the elastic force of the second spring and the water pressure inside the second elastic hose.

[0014] Optionally, both ends of the second water outlet joint and the second water inlet joint are provided with a second connecting pipe with a cone, and the second water outlet joint and the second water inlet joint are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body. The second water outlet joint includes a joint three and a joint four that are clamped together, and a second sealing ring is pressed between the joint three and the joint four. A second pad is provided between the left side of the joint three and the inner wall of the pump head body, and between the right side of the joint four and the inner wall of the pump head body.

[0015] Optionally, a driving device is also included, which is a motor arranged at the lower end of the pump head body. The output shaft of the motor faces upward and is connected to a fixed frame, which is fixed with three fixed shafts evenly distributed in a ring shape. Each fixed shaft is rotatably connected to a roller for squeezing the first flexible waterway and the second flexible waterway. The output shaft of the motor rotates clockwise to allow water to flow through the first flexible waterway, and the output shaft rotates counterclockwise to allow water to flow through the second flexible waterway.

[0016] Optionally, a pump head cover is provided on the top of the pump head body.

[0017] The utility model has the beneficial effects:

[0018] The prior art also provides multiple flexible waterways, and the water flow direction in the multiple flexible waterways is the same, that is, the water inlet ends of the multiple flexible waterways are on the same side, and the water outlet ends are on the same side. When one of the flexible waterways pumps water, the other flexible waterways will also start pumping water. This only increases the water pumping volume and cannot achieve the pumping of different liquid materials. The only way is to increase the number of pumps.

[0019] Compared with the prior art, at least one first flexible water channel and at least one second flexible water channel are provided in the pump head body, and the water flow directions of the first flexible water channel and the second flexible water channel are distributed in opposite directions, which is equivalent to the water inlet end and the water outlet end of the first flexible water channel corresponding to the water outlet end and the water inlet end of the second flexible water channel, and the water inlet end of the first flexible water channel and the water outlet end of the second flexible water channel are located on the same side. At the same time, a first one-way water flow control structure and a second one-way water flow control structure are respectively provided at the water outlet ends of the first flexible water channel and the second flexible water channel. The two one-way water flow control structures respectively control the on-off of the corresponding water channels. Under the action of the structure, the water outlet ends of the first flexible waterway and the second flexible waterway can only discharge water but not take in water, and the water inlet ends of the two waterways respectively transport different materials. Since the first flexible waterway and the second flexible waterway alternately pass water, when the water inlet end of the first flexible waterway starts to absorb water, the second flexible waterway cannot absorb water under the action of the second one-way water flow control structure. When the water inlet end of the second flexible waterway starts to absorb water, the first flexible waterway cannot absorb water under the action of the first one-way water flow control structure. Therefore, one pump can be used to achieve the pumping of different liquid materials at different times without increasing the number of pumps, which is conducive to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0022] Figure 3 for Figure 1 Schematic diagram of the BB cross-sectional structure.

[0023] Figure numerals: 01-motor, 02-output shaft, 03-fixed frame, 04-fixed shaft, 05-roller, 06-second elastic hose, 07-pump head body, 08-first elastic hose, 09-pump head cover, 10-first control ball, 11-first pad, 12-connector 1, 13-connector 4, 14-first sealing ring, 15-connector 2, 16-first spring, 17-first water outlet, 18-cone, 19-first water trough, 2 0-first water outlet joint, 21-first water inlet, 22-first water inlet joint, 23-first connecting pipe, 24-first water passage chamber, 25-second water inlet joint, 26-second water inlet, 27-second water outlet, 28-second connecting pipe, 29-second water passage, 30-second pad, 31-second water passage chamber, 32-connector three, 33-second control ball, 34-second sealing ring, 35-second spring, 36-second water outlet joint. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "opened," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. Example

[0027] A double-inlet and double-outlet peristaltic pump includes a pump head body 07, and a plurality of flexible water paths for pumping water are provided in the pump head body 07. The flexible water paths include at least one first flexible water path and at least one second flexible water path. The water flow direction of the first flexible water path is opposite to the water flow direction of the second flexible water path. The first flexible water path and the second flexible water path are respectively provided with a first one-way water flow control structure and a second one-way water flow control structure. Under the action of the first one-way water flow control structure and the second one-way water flow control structure, water flows alternately through the first flexible water path and the second flexible water path.

[0028] In this embodiment, Figure 1 As shown, a first flexible water channel and a second flexible water channel are provided in the pump head body 07, and the two flexible water channels are distributed up and down, and the water flow directions of the first flexible water channel and the second flexible water channel are oppositely distributed, which is equivalent to the water inlet end and the water outlet end of the first flexible water channel corresponding to the water outlet end and the water inlet end of the second flexible water channel, and the water inlet end of the first flexible water channel and the water outlet end of the second flexible water channel are located on the same side. At the same time, a first one-way water flow control structure and a second one-way water flow control structure are respectively provided at the water outlet ends of the first flexible water channel and the second flexible water channel. The two one-way water flow control structures respectively control the on-off of the corresponding water channels. Under the action of the two one-way water flow control structures, the water outlet ends of the first flexible water channel and the second flexible water channel can only discharge water but cannot discharge water. Water inlet, the water inlet ends of the two water channels transport different materials respectively. For example, the first flexible water channel needs to transport hand sanitizer, and the second flexible water channel needs to transport disinfectant. Since the first flexible water channel and the second flexible water channel alternately pass water, when hand sanitizer is needed, the water inlet end of the first flexible water channel starts to absorb water (hand sanitizer), and the second flexible water channel cannot absorb water (disinfectant) under the action of the second one-way water flow control structure. When disinfectant is needed, the water inlet end of the second flexible water channel starts to absorb water (disinfectant), and the first flexible water channel cannot absorb water (hand sanitizer) under the action of the first one-way water flow control structure. Therefore, one pump can be used to pump different liquid materials at different times without increasing the number of pumps, which is beneficial to reducing costs.

[0029] Furthermore, the first flexible waterway is located above the second flexible waterway, the water flow direction of the first flexible waterway is clockwise, and the water flow direction of the second flexible waterway is counterclockwise. The first flexible waterway has a first water inlet 21 and a first water outlet 17 located on the outside of the pump head body 07 at both ends, and the second flexible waterway has a second water inlet 26 and a second water outlet 27 located on the outside of the pump head body 07 at both ends. The first water inlet 21 corresponds to the second water outlet 27, and the first water outlet 17 corresponds to the second water inlet 26. The first unidirectional water flow control structure is arranged at the first water outlet 17, and the second unidirectional water flow control structure is arranged at the second water outlet 27.

[0030] Furthermore, the first flexible water circuit includes a first elastic hose 08, which is U-shaped and arranged in the pump head body 07. The two ends of the first elastic hose 08 are respectively connected to the first water inlet connector 22 and the first water outlet connector 20 which are clamped on the pump head body 07. The first water inlet 21 is arranged at the water inlet end of the first water inlet connector 22, the first water outlet 17 is arranged at the water outlet end of the first water outlet connector 20, and the first unidirectional water flow control structure is arranged inside the first water outlet connector 20.

[0031] Furthermore, the first unidirectional water flow control structure includes a first control ball 10 and a first spring 16. The first control ball 10 is movably arranged in a first water passage chamber 24 inside the first water outlet joint 20. The first water passage chamber 24 connects the water path between the first water inlet 21 and the first water outlet 17. One end of the first spring 16 acts on the first control ball 10, and the other end acts on the inner wall of the first water outlet joint 20. The side wall of the first water passage chamber 24 is provided with a first water passage groove 19 connected to the first water outlet 17. The first control ball 10 controls the connection or blocking of the water path between the first water inlet 21 and the first water outlet 17 under the combined action of the elastic force of the first spring 16 and the water pressure inside the first elastic hose 08.

[0032] Furthermore, both ends of the first water outlet connector 20 and the first water inlet connector 22 are provided with a first connecting pipe 23 with a cone 18. The first water outlet connector 20 and the first water inlet connector 22 are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body 07. The first water outlet connector 20 includes a connector 12 and a connector 2 15 that are clamped together. A first sealing ring 14 is pressed between the connector 12 and the connector 2 15. A first pad 11 is provided between the left side of the connector 12 and the inner wall of the pump head body 07 and between the right side of the connector 2 15 and the inner wall of the pump head body 07.

[0033] Specifically, the first pads 11 on either side of connector 12 and connector 2 15 securely fasten the first outlet connector 20 within the pump head body 07, preventing it from loosening. The larger portion of the first inlet connector 22 acts like an anchor. A cavity is provided within the pump head body 07, which accommodates this anchor, and the anchor fits snugly within this cavity, enhancing the secure connection between the first inlet connector 22 and the pump head body 07. The remaining inlet and outlet connectors operate on the same principle.

[0034] Furthermore, the second flexible water circuit includes a second elastic hose 06, which is U-shaped and arranged in the pump head body 07. The two ends of the second elastic hose 06 are respectively connected to the second water inlet connector 25 and the second water outlet connector 36 clamped on the pump head body 07. The second water inlet 26 is arranged at the water inlet end of the second water inlet connector 25, and the second water outlet 27 is arranged at the water outlet end of the second water outlet connector 36. The second unidirectional water flow control structure is arranged inside the second water outlet connector 36.

[0035] Furthermore, the second unidirectional water flow control structure includes a second control ball 33 and a second spring 35. The second control ball 33 is movably arranged in the second water passage chamber 31 inside the second water outlet joint 36. The second water passage chamber 31 conducts the water path between the second water inlet 26 and the second water outlet 27. One end of the second spring 35 acts on the second control ball 33, and the other end acts on the inner wall of the second water outlet joint 36. The side wall of the second water passage chamber 31 is provided with a second water passage groove 29 connected to the second water outlet 27. The second control ball 33 controls the connection or blocking of the water path between the second water inlet 26 and the second water outlet 27 under the combined action of the elastic force of the second spring 35 and the water pressure inside the second elastic hose 06.

[0036] Furthermore, both ends of the second water outlet joint 36 and the second water inlet joint 25 are provided with a second connecting pipe 28 with a cone 18. The second water outlet joint 36 and the second water inlet joint 25 are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body 07. The second water outlet joint 36 includes a joint three 32 and a joint four 13 that are clamped together. A second sealing ring 34 is pressed between the joint three 32 and the joint four 13. A second pad 30 is provided between the left side of the joint three 32 and the inner wall of the pump head body 07 and between the right side of the joint four 13 and the inner wall of the pump head body 07.

[0037] Specifically, the second pads 30 on both sides of the connector three 32 and the connector four 13 can firmly clamp the second water outlet connector 36 in the pump head body 07 to prevent it from loosening.

[0038] Specifically, the cone 18 is a common setting on existing joints, which makes it easier for the hose to prevent it from falling off the joint after being connected.

[0039] Further, such as Figure 1 As shown, it also includes a driving device, which is a motor 01 arranged at the lower end of the pump head body 07. The output shaft 02 of the motor 01 is upward and connected to the fixed frame 03, which is fixed with three fixed shafts 04 evenly distributed in a ring shape. Each fixed shaft 04 is rotatably connected to a roller 05 for squeezing the first flexible waterway and the second flexible waterway. The output shaft 02 of the motor 01 rotates clockwise to allow water to flow through the first flexible waterway, and the output shaft 02 rotates counterclockwise to allow water to flow through the second flexible waterway.

[0040] Furthermore, a pump head cover 09 is mounted on the top of the pump head body 07 .

[0041] Specifically, the first flexible waterway includes a first elastic hose 08, and the second flexible waterway includes a second elastic hose 06. The first elastic hose 08 and the second elastic hose 06 are U-shaped and arranged in the pump head body 07. The first elastic hose 08 is located above the second elastic hose 06, the first water inlet 21 is located above the second water outlet 27, and the first water outlet 17 is located above the second water inlet 26. The water flow direction inside the first elastic hose 08 is clockwise, and the water flow direction inside the second elastic hose 06 is counterclockwise. A first one-way water flow control structure is provided in the first water outlet joint 20, which only allows the water inside the first elastic hose 08 to flow to the first water outlet 17. A second one-way water flow control structure is provided in the second water outlet joint 36, which only allows the water inside the second elastic hose 06 to flow to the second water outlet 27. Figure 2 As shown, when working, the output shaft 02 of the motor 01 rotates clockwise and drives the fixing frame 03 to rotate clockwise. The rotation of the fixing frame 03 drives the three rollers 05 to rotate. The three rollers 05 squeeze the first elastic hose 08 in turn clockwise. Water enters the first elastic hose 08 from the first water inlet 21 and is then squeezed to the front end of the first control ball 10 by the rollers 05. When rotating clockwise, at this time, as shown in FIG. Figure 3 As shown, due to the effect of the second one-way water flow control structure, water cannot enter the second elastic hose 06 from the second water outlet 27. Therefore, there is no water inside the second elastic hose 06 and water cannot flow. After the water pressure at the front end of the first control ball 10 overcomes the elastic force of the first spring 16, it squeezes the first control ball 10 to the right and compresses the first spring 16. At this time, the first water channel 19 connects the water path between the first water inlet 21 and the first water outlet 17, and the first elastic hose 08 realizes water pumping.

[0042] On the contrary, when the output shaft 02 of the motor 01 rotates counterclockwise, Figure 2 As shown, due to the first one-way water flow control structure, water cannot enter the first elastic hose 08 from the first water outlet 17. Therefore, there is no water inside the first elastic hose 08, and water cannot flow through. At this time, the three rollers 05 rotate counterclockwise to squeeze the second elastic hose 06. Water enters the second elastic hose 06 from the second water inlet 26 and is then squeezed by the rollers 05 to the front end of the second control ball 33. The water pressure at the front end of the second control ball 33 overcomes the elastic force of the second spring 35, pushing the second control ball 33 to the right and compressing the second spring 35. The second water channel 29 then connects the water path between the second water inlet 26 and the second water outlet 27, allowing water to flow through the second elastic hose 06. When different liquid materials are connected to the first water inlet 21 and the second water inlet 26, the output shaft 02 of the motor 01 is controlled to rotate clockwise or counterclockwise according to the usage time of the different liquid materials. Only a single peristaltic pump is required to transport the different liquid materials, eliminating the need for additional pumps and reducing costs.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A double-inlet and double-outlet peristaltic pump, comprising a pump head body (07), wherein the pump head body (07) is provided with a plurality of flexible water channels for pumping water, characterized in that: The flexible waterway includes at least one first flexible waterway and at least one second flexible waterway. The water flow direction of the first flexible waterway is opposite to the water flow direction of the second flexible waterway. The first flexible waterway and the second flexible waterway are respectively provided with a first one-way water flow control structure and a second one-way water flow control structure. Under the action of the first one-way water flow control structure and the second one-way water flow control structure, water flows alternately through the first flexible waterway and the second flexible waterway.

2. A double-inlet and double-outlet peristaltic pump according to claim 1, characterized in that: The first flexible waterway is located above the second flexible waterway, the water flow direction of the first flexible waterway is clockwise, and the water flow direction of the second flexible waterway is counterclockwise. The first flexible waterway has a first water inlet (21) and a first water outlet (17) located outside the pump head body (07) at both ends, and the second flexible waterway has a second water inlet (26) and a second water outlet (27) located outside the pump head body (07) at both ends. The first water inlet (21) corresponds to the second water outlet (27), and the first water outlet (17) corresponds to the second water inlet (26). A first one-way water flow control structure is provided at the first water outlet (17), and a second one-way water flow control structure is provided at the second water outlet (27).

3. A double-inlet and double-outlet peristaltic pump according to claim 2, characterized in that: The first flexible water circuit comprises a first elastic hose (08), the first elastic hose (08) being arranged in a U-shape inside the pump head body (07), the two ends of the first elastic hose (08) being respectively connected to a first water inlet connector (22) and a first water outlet connector (20) which are clamped on the pump head body (07), the first water inlet (21) being arranged at the water inlet end of the first water inlet connector (22), the first water outlet (17) being arranged at the water outlet end of the first water outlet connector (20), and the first unidirectional water flow control structure being arranged inside the first water outlet connector (20).

4. A double-inlet and double-outlet peristaltic pump according to claim 1, characterized in that: The first one-way water flow control structure comprises a first control ball (10) and a first spring (16). The first control ball (10) is movably arranged in a first water passage cavity (24) inside the first water outlet joint (20). The first water passage cavity (24) conducts the water path between the first water inlet (21) and the first water outlet (17). One end of the first spring (16) acts on the first control ball (10), and the other end acts on the inner wall of the first water outlet joint (20). A first water passage groove (19) connected to the first water outlet (17) is provided on the side wall of the first water passage cavity (24). The first control ball (10) controls the connection or blocking of the water path between the first water inlet (21) and the first water outlet (17) under the combined action of the elastic force of the first spring (16) and the water pressure inside the first elastic hose (08).

5. A double-inlet and double-outlet peristaltic pump according to claim 3, characterized in that: Both ends of the first water outlet joint (20) and the first water inlet joint (22) are provided with a first connecting pipe (23) with a cone (18). The first water outlet joint (20) and the first water inlet joint (22) are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body (07). The first water outlet joint (20) includes a joint 1 (12) and a joint 2 (15) that are mutually clamped. A first sealing ring (14) is pressed between the joint 1 (12) and the joint 2 (15). A first pad (11) is provided between the left side of the joint 1 (12) and the inner wall of the pump head body (07) and between the right side of the joint 2 (15) and the inner wall of the pump head body (07).

6. A double-inlet and double-outlet peristaltic pump according to claim 2, characterized in that: The second flexible water circuit comprises a second elastic hose (06), the second elastic hose (06) being arranged in a U-shape inside the pump head body (07), the two ends of the second elastic hose (06) being respectively connected to a second water inlet connector (25) and a second water outlet connector (36) which are clamped on the pump head body (07), the second water inlet (26) being arranged at the water inlet end of the second water inlet connector (25), the second water outlet (27) being arranged at the water outlet end of the second water outlet connector (36), and the second unidirectional water flow control structure being arranged inside the second water outlet connector (36).

7. A double-inlet and double-outlet peristaltic pump according to claim 6, characterized in that: The second one-way water flow control structure comprises a second control ball (33) and a second spring (35). The second control ball (33) is movably arranged in a second water passage chamber (31) inside the second water outlet joint (36). The second water passage chamber (31) conducts the water path between the second water inlet (26) and the second water outlet (27). One end of the second spring (35) acts on the second control ball (33) and the other end acts on the inner wall of the second water outlet joint (36). A second water passage groove (29) connected to the second water outlet (27) is provided on the side wall of the second water passage chamber (31). The second control ball (33) controls the connection or blocking of the water path between the second water inlet (26) and the second water outlet (27) under the combined action of the elastic force of the second spring (35) and the water pressure inside the second elastic hose (06).

8. A double-inlet and double-outlet peristaltic pump according to claim 6, characterized in that: Both ends of the second water outlet joint (36) and the second water inlet joint (25) are provided with a second connecting pipe (28) with a cone (18). The second water outlet joint (36) and the second water inlet joint (25) are small at both ends and large in the middle to form a cross-shaped structure and form a form-locked connection with the pump head body (07). The second water outlet joint (36) includes a joint three (32) and a joint four (13) that are mutually clamped. A second sealing ring (34) is pressed between the joint three (32) and the joint four (13). A second pad (30) is provided between the left side of the joint three (32) and the inner wall of the pump head body (07) and between the right side of the joint four (13) and the inner wall of the pump head body (07).

9. The double-inlet and double-outlet peristaltic pump according to claim 1, characterized in that: The pump also includes a driving device, which is a motor (01) arranged at the lower end of the pump head body (07). The output shaft (02) of the motor (01) faces upward and is connected to a fixing frame (03). Three fixed shafts (04) are fixed and evenly distributed in a ring shape. Each fixed shaft (04) is rotatably connected to a roller (05) for squeezing the first flexible waterway and the second flexible waterway. The output shaft (02) of the motor (01) rotates clockwise to allow water to flow through the first flexible waterway, and the output shaft (02) rotates counterclockwise to allow water to flow through the second flexible waterway.

10. A double-inlet and double-outlet peristaltic pump according to claim 1, characterized in that: A pump head cover (09) is clamped on the top of the pump head body (07).

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