A dual-channel nutrition pump with flushing function

Abstract

The present application discloses a dual-channel nutrition pump with a flushing function, which relates to the technical field of medical devices, and includes a body, a peristaltic pump is fixedly arranged on the body, a delivery main pipe is fixedly arranged on the body, one end of the delivery main pipe passes through the peristaltic pump, and the other end of the delivery main pipe is connected to two liquid supply branches through a connector, and a switching valve is arranged in the body for controlling one of the liquid supply branches to be opened while closing the other liquid supply branch. The present application has the effect of facilitating the operator to switch between different liquid types such as nutrient solution and clean water in the delivery main pipe.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a dual-channel nutrition pump with a flushing function. Background Art

[0002] A nutrition pump refers to a nutrition infusion pump that can be used for nasogastric feeding. It can mainly input water, nutrient solution and homemade rice milk of a certain concentration through a nasogastric tube. It has functions such as automatic infusion, alarm after infusion, quick discharge and back-drawing.

[0003] A Chinese invention patent with authorization announcement number CN209236897U discloses a portable enteral nutrition pump, which includes a housing, a control device, a peristaltic pump and a delivery tube assembly. The delivery tube assembly includes a delivery tube, and the middle part of the delivery tube passes through the peristaltic pump to achieve the peristaltic pump squeezing the delivery tube.

[0004] When supplying nutrient solution to the user, it is necessary to switch between nutrient solution and clean water. However, the nutrient pump in the above-mentioned related technology can only supply nutrient solution to the nutrient bottle through the delivery tube when working. When different liquid types need to be switched, the operator needs to replace the nutrient pump, and it is not possible to switch between different liquid types such as nutrient solution and clean water on the same nutrient pump. Summary of the invention

[0005] In order to facilitate the operator to switch between different liquid types such as nutrient solution and clean water in the delivery main pipe, the present application provides a dual-channel nutrient pump with a flushing function.

[0006] The dual-channel nutrition pump with flushing function provided in this application adopts the following technical solution:

[0007] A dual-channel nutrient pump with flushing function comprises a body, a peristaltic pump is fixedly arranged on the body, a main delivery pipe is fixedly arranged on the body, one end of the main delivery pipe passes through the peristaltic pump, and the other end of the main delivery pipe is connected to two liquid supply branches through a connector, and a switching valve is arranged in the body for controlling one of the liquid supply branches to be opened while closing the other liquid supply branch.

[0008] By adopting the above technical solution, two liquid supply branches, one for conveying nutrient solution and the other for clean water, are used. A switching valve is used to control one of the liquid supply branches to open while the other is closed, so that the operator can switch between different liquid types such as nutrient solution and clean water in the conveying main pipe.

[0009] Preferably, a base plate is fixedly connected to the body, and two paving grooves corresponding to the two liquid supply branches are respectively provided on the base plate, and the switching valve comprises two elastic abutting pieces respectively arranged in the two paving grooves, one end of the elastic abutting piece is fixed in the paving groove, and the other end of the elastic abutting piece is a free end, and the free end of the elastic abutting piece protrudes toward one side of the liquid supply branch to form an abutting portion, and the abutting portion presses and abuts the liquid supply branch;

[0010] The switching valve also includes a driving assembly arranged on the body, which is used to drive one of the abutting parts to move away from the liquid supply branch to release the squeezing of the liquid supply branch, and at the same time move the other abutting part toward the liquid supply branch to completely squeeze and block the liquid supply branch.

[0011] By adopting the above technical solution, at the beginning, both liquid supply branches are squeezed by the abutment part. The driving component drives one of the abutment parts to move back to the liquid supply branch to release the squeezing of the liquid supply branch, so that the liquid supply branch is in a flow state. At the same time, the other abutment part moves toward the liquid supply branch to completely squeeze and block the liquid supply branch. When switching is required, the two abutment parts can be moved in opposite directions by controlling the driving component, thereby realizing switching of different liquid types.

[0012] Preferably, the elastic contact piece is arranged vertically, and one end of the elastic contact piece in the vertical direction is fixedly arranged in the clearance groove;

[0013] The driving assembly includes a motor horizontally fixed on the body, a driving member is fixed on the output shaft of the motor, the driving member includes a driving plate fixed on the output shaft of the motor, the two free ends of the driving plate are symmetrically arranged and correspond to the free ends of two elastic abutment plates, the driving plate is located on the side of the substrate facing away from the liquid supply branch pipe, a lower abutment surface is arranged on the driving plate, and an upper abutment surface is arranged on the free end of the elastic abutment plate facing the liquid supply branch pipe, the driving member also includes a driving block, the lower abutment surface can abut against the upper abutment surface to drive one of the elastic abutment plates to move away from the liquid supply branch pipe, and the other elastic abutment plate can move toward the liquid supply branch pipe under the action of the driving block.

[0014] By adopting the above technical solution, the motor is started, and the output shaft of the motor drives the driving member to rotate. One of the elastic abutment plates moves away from the liquid supply branch pipe under the action of the lower abutment surface, and at the same time, the other elastic abutment plate moves toward the liquid supply branch pipe under the action of the driving block, thereby realizing simultaneous driving of the two elastic abutment plates.

[0015] Preferably, an inclined surface is provided on the side of the free end of the elastic abutment sheet facing away from the liquid supply branch pipe, the driving block is located between the two inclined surfaces, and one end of the driving block along the circumference of the output shaft of the motor can abut against the inclined surface, and the elastic abutment sheet can move toward the liquid supply branch pipe under the action of the driving block until the liquid supply branch pipe is completely squeezed and blocked.

[0016] By adopting the above technical solution, the cooperation between the driving block and the inclined surface realizes the driving of the elastic contact piece.

[0017] Preferably, a cover body matching with the base is snap-connected to the side of the base facing away from the body.

[0018] By adopting the above technical solution, the setting of the cover body plays a covering and protecting role for the liquid supply branch pipe and the main delivery pipe.

[0019] Preferably, a travel switch is fixedly provided on the machine body, and a contact probe corresponding to the travel switch is fixedly provided on the fixed housing.

[0020] By adopting the above technical solution, when the fixed housing is clamped and connected to the base plate, the contact probe contacts the travel switch to detect the position and type of the fixed housing.

[0021] Preferably, a bubble detection probe is fixedly provided on the machine body, and a reflection seat corresponding to the bubble detection probe is fixedly provided on the fixed shell, and the position of the reflection seat corresponds to the position of the transport main pipe.

[0022] By adopting the above technical solution, the bubble detection probe and the reflective seat are used to detect bubbles in the transport main pipe, thereby reducing the occurrence of bubbles entering the human body through the transport main pipe.

[0023] Preferably, a pressure detection mechanism for detecting the liquid pressure in the delivery main pipe is provided between the machine body and the base plate.

[0024] By adopting the above technical solution, the compression detection mechanism is used to detect the liquid pressure in the delivery main pipe, which facilitates the detection of the pressure in the delivery main pipe.

[0025] Preferably, the machine body is provided with a clamping assembly for fixing it at a specified position.

[0026] By adopting the above technical solution, the arrangement of the clamping assembly makes it convenient for the operator to clamp the nutrition pump at a designated position.

[0027] Preferably, the clamping assembly comprises a U-shaped clamp detachably connected to the machine body, and one free end of the U-shaped clamp is penetrated by a clamping rod threadedly connected thereto.

[0028] By adopting the above technical solution, the clamping rod is rotated so that one end of the clamping rod located inside the U-shaped clamp and the free end of the U-shaped clamp without the clamping rod respectively abut against the two sides of the object to be clamped, thereby achieving clamping of the clamping assembly.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Two liquid supply branches, one for delivering nutrient solution and the other for delivering clean water. The switching valve is used to control one of the liquid supply branches to be opened while the other is closed, so that the operator can switch between different liquid types such as nutrient solution and clean water in the delivery main pipe;

[0031] 2. At the beginning, both liquid supply branches are squeezed by the abutment part. The driving component drives one of the abutment parts to move away from the liquid supply branch to release the squeezing of the liquid supply branch, so that the liquid supply branch is in a flow state. At the same time, the other abutment part moves toward the liquid supply branch to completely squeeze and block the liquid supply branch. When switching is required, the driving component is controlled to move the two abutment parts in opposite directions, thereby realizing the switching of different liquid types;

[0032] 3. Start the motor, and the output shaft of the motor drives the driving member to rotate. One of the elastic abutment pieces moves away from the liquid supply branch pipe under the action of the lower abutment surface, and the other elastic abutment piece moves toward the liquid supply branch pipe under the action of the driving block, thereby realizing simultaneous driving of the two elastic abutment pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of this application.

[0034] Figure 2 It is a partial structural schematic diagram of the outer shell in this application, in which the outer shell is turned over to show the inner shell, the fixed shell, the conveying main pipe, the liquid supply branch pipe, the peristaltic pump structure and the clamping assembly structure.

[0035] Figure 3 It is an exploded schematic diagram showing the structure of the fixed shell, the main conveying pipe and the liquid supply branch pipe in this application.

[0036] Figure 4 It is an exploded schematic diagram showing the structure of the fixed shell, the main conveying pipe and the liquid supply branch pipe in this application.

[0037] Figure 5 It is a partial structural schematic diagram of the present application in which the outer shell, fixed shell, conveying main pipe and liquid supply branch pipe are hidden to show the inner shell, receiving block and travel switch structure.

[0038] Figure 6 It is a partial structural diagram showing the structure of the switching valve and the pressure detection mechanism in this application.

[0039] Figure 7 It is a partial cross-sectional schematic diagram showing the elastic contact piece structure in this application.

[0040] Figure 8 It is a partial exploded schematic diagram showing the structure of the clamping assembly in this application.

[0041] Fig. 9 It is a structural schematic diagram showing the structure of the clamping assembly in this application.

[0042] Explanation of reference numerals: 1. body; 11. inner shell; 111. upper accommodating area; 112. lower accommodating area; 113. peristaltic pump; 12. outer shell; 121. inner recess; 13. receiving block; 131. travel switch; 132. waterproof cover; 14. bubble detection probe; 2. fixed shell; 21. substrate; 211. card strip; 212. give way groove; 213. reflective seat; 214. accommodating groove; 22. cover; 221. card slot; 222. extension; 223. contact probe; 224. inner convex block; 23. fixed bracket; 231. first support tube; 232. second support tube; 3. main delivery pipe; 31. connecting joint; 4. liquid supply branch pipe; 5. switching valve; 51. elastic resistance Connecting piece; 52, bending part; 521, upper abutting surface; 522, inclined surface; 53, abutting part; 54, driving assembly; 541, motor; 542, adapter shaft; 543, driving piece; 5431, lower abutting surface; 544, driving block; 6, pressure detection mechanism; 61, elastic pressure piece; 62, small convex piece; 63, pressure detection probe; 631, waterproof membrane; 7, clamping assembly; 71, U-shaped clip; 711, block profile; 712, snap plate; 7121, snap groove; 72, clamping rod; 721, circular pressure block; 8, snap cover; 81, snap cavity; 82, groove; 83, accommodating groove; 84, snap rod; 841, snap block; 85, compression spring; 86, connecting port. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-9 This application is described in further detail.

[0044] The embodiment of the present application discloses a dual-channel nutrition pump with a flushing function. Example

[0045] Combination Figure 1 and Figure 2, including a body 1 formed by integral injection molding, and a display screen for displaying various parameters is installed on the front side of the body 1. An inner shell 11 is arranged on one of the side walls of the body 1, and an upper accommodating area 111 and a lower accommodating area 112 are arranged on the inner shell 11, and a peristaltic pump 113 is fixedly connected in the lower accommodating area 112. An outer shell 12 is hingedly connected to the outer side of the inner shell 11, and the side of the outer shell 12 facing away from the hinge side is clamped and connected to the inner shell 11, and a side of the outer shell 12 clamped and connected to the inner shell 11 is provided with an inner concave portion 121 for facilitating the operator to open the outer shell 12, and the inner shell 11 and the outer shell 12 are integrally formed by injection molding.

[0046] Combination Figure 2 and Figure 3 In the upper accommodating area 111, a fixed shell 2 with a hollow inner cavity is detachably connected to the outer wall of the inner shell 11, and the fixed shell 2 is clamped and connected to the upper accommodating area 111. The fixed shell 2 includes a base plate 21 installed in the upper accommodating area 111, and a cover 22 adapted thereto is snap-connected to the side of the base plate 21 facing away from the body 1, and the base plate 21 and the cover 22 are integrally injection molded. A plurality of spaced-apart clamping strips 211 are fixedly connected to the inner wall of the base plate 21, and a clamping groove 221 corresponding to the clamping strip is provided on the cover 22, and one end of the clamping strip 211 facing away from the base plate 21 is clamped and matched in the clamping groove 221, so as to realize the connection between the cover 22 and the base plate 21.

[0047] The top end of the cover body 22 extends outward horizontally to form an extension portion 222 . The provision of the extension portion 222 facilitates the operator to disassemble and assemble the fixed housing 2 .

[0048] Combination Figure 4 and Figure 5 The machine body 1 is provided with a receiving block 13 at the bottom of the fixed housing 2, a travel switch 131 is fixedly provided at the top of the receiving block 13, a rubber waterproof cover 132 is provided outside the travel switch 131, and a contact probe 223 corresponding to the travel switch 131 is fixedly provided at the bottom of the cover body 22. During installation, the cover body 22 is clamped and connected to the upper accommodation area 111, and the contact probe 223 contacts the travel switch 131 to detect the position and type of the fixed housing 2.

[0049] Combination Figure 3 and Figure 4 A fixing bracket 23 is provided in the fixing housing 2. The fixing bracket 23 is located at the top of the fixing housing 2. The fixing bracket 23 is inserted and clamped between the base plate 21 and the cover 22. A vertically arranged first supporting tube 231 and two spaced second supporting tubes 232 are fixedly connected to the fixing bracket 23. Both the first supporting tube 231 and the second supporting tube 232 extend upward to extend out of the fixing housing 2.

[0050] The fixed housing 2 is provided with a delivery main pipe 3. The base plate 21 and the cover 22 are provided with an embedding groove adapted to the delivery main pipe 3. The delivery main pipe 3 is partially embedded in the embedding groove. One end of the delivery main pipe 3 is located in the fixed housing 2. The other end of the delivery main pipe 3 passes through the bottom end of the fixed housing 2 and passes through the peristaltic pump 113 (refer to Figure 2 ) and extends into the fixed shell 2, and finally passes through the first support tube 231 and extends out of the fixed shell 2 for conveying liquid to the user.

[0051] Two liquid supply branches 4 are also provided in the fixed housing 2. The two liquid supply branches 4 are respectively inserted into the two second support tubes 232. One end of the two liquid supply branches 4 extending out of the fixed housing 2 is connected and fixed to containers containing nutrient solution and clean water. One end of the main delivery pipe 3 located in the fixed housing 2 is fixedly connected to a connection joint 31. The connection joint 31 is used to connect the main delivery pipe 3 and the two liquid supply branches 4. The bottom ends of the two liquid supply branches 4 are fixedly connected to the connection joint 31.

[0052] The positions on the cover body 22 corresponding to the two liquid supply branches 4 are recessed inwardly, and inner convex blocks 224 corresponding to the liquid supply branches 4 are fixedly connected to the inner side wall of the recessed part. The two inner convex blocks 224 respectively abut against the liquid supply branches 4 to squeeze the liquid supply branches 4.

[0053] Combination Figure 3 and Figure 6 , Body 1 (refer to Figure 2 ) is provided with a switching valve 5, which is used to control one of the liquid supply branches 4 to be opened while closing the other liquid supply branch 4.

[0054] Two clearance grooves 212 are provided on the base plate 21 at positions corresponding to the two liquid supply branches 4. The clearance grooves 212 are arranged vertically and penetrate the two side walls of the base plate 21 in the thickness direction. The switching valve 5 includes an elastic abutment sheet 51 arranged in the clearance groove 212. The top end of the elastic abutment sheet 51 is fixedly connected to the top wall of the clearance groove 212, and the bottom end of the elastic abutment sheet 51 is a free end. The free end of the elastic abutment sheet 51 is bent in an inverted L shape toward the side facing away from the liquid supply branch 4 to form a bending portion 52. The opening of the bending portion 52 is arranged toward the liquid supply branch 4, and the bending portion 52 extends out of the outer side of the clearance groove 212. The middle position of the elastic abutment sheet 51 is bent in a V-shape toward one side of the liquid supply branch pipe 4 to form an abutment portion 53. The opening of the abutment portion 53 is arranged to face away from the liquid supply branch pipe 4. The abutment portion 53 corresponds to the position of the inner protrusion 224. The bent end of the abutment portion 53 is pressed and abutted against the liquid supply branch pipe 4, further restricting the flow of liquid in the liquid supply branch pipe 4.

[0055] The switching valve 5 also includes a driving assembly 54 disposed on the body 1. The driving assembly 54 includes a motor 541 fixedly connected to the body 1. The output shaft of the motor 541 is arranged horizontally, and the axis of the output shaft of the motor 541 is located at the midpoint of the line connecting the two elastic contact plates 51. A driving member is fixedly arranged on the output shaft of the motor 541. The driving member includes a transfer shaft 542 coaxially fixed on the output shaft of the motor 541, and one end of the transfer shaft 542 facing away from the motor 541 extends out of the inner cavity of the body 1. The outer peripheral surface of the transfer shaft 542 extending out of one end of the body 1 is fixedly connected to a driving plate 543. The driving plate 543 is arranged in a semi-circular shape around the lower part of the transfer shaft 542, and the two free ends of the driving plate 543 correspond to the two bending portions 52 respectively.

[0056] Combination Figure 3 , Figure 6 and Figure 7 , lower abutting surfaces 5431 are respectively arranged on the two free ends of the driving piece 543, and the lower abutting surface 5431 is arranged to be inclined in an arc shape from one side close to the substrate 21 to the other side, and the distance between the lower abutting surface 5431 and the bending portion 52 gradually increases from one side close to the substrate 21 to the other side. An upper abutting surface 521 matching with the lower abutting surface 5431 is arranged on the inner side of the abutting portion 53. When the driving piece 543 and the transfer shaft 542 rotate under the action of the motor 541, the free end of the driving piece 543 extends into the inner side of the bending portion 52, and the lower abutting surface 5431 abuts against the upper abutting surface 521, driving the bending portion 52 to move away from the liquid supply branch pipe 4, thereby driving the elastic abutting piece 51 and the abutting portion 53 to move away from the liquid supply branch pipe 4, releasing the squeezing of the liquid supply branch pipe 4, and making the liquid supply branch pipe 4 in a flow state.

[0057] A driving block 544 is fixedly connected to the upper portion of the outer peripheral surface of one end of the transfer shaft 542 provided with the driving sheet 543, and the driving block 544 is located between the two bent portions 52. The two bent portions 52 are provided with inclined surfaces 522 on one side facing away from the liquid supply branch pipe 4, and the two inclined surfaces 522 are respectively located on the opposite sides of the two bent portions 52, and the distance between the two inclined surfaces 522 gradually increases from the side close to the liquid supply branch pipe 4 to the other side.

[0058] When the bent portion 52 of one of the elastic contact pieces 51 moves away from the side of the liquid supply branch pipe 4 under the action of the driving piece 543, the driving block 544 rotates together with the adapter shaft 542, and one end of the driving block 544 close to the bent portion 52 of the other elastic contact piece 51 abuts against the inclined surface 522 of the bent portion 52, and applies force to the inclined surface 522, so that the bent portion 52, the elastic contact piece 51 and the contact portion 53 where the inclined surface 522 is located move toward the liquid supply branch pipe 4, until the liquid supply branch pipe 4 is completely squeezed and blocked, so that the delivery main pipe 3 is connected to only one of the liquid supply branch pipes 4. When switching is required, the motor 541 can be rotated in the opposite direction, so that the two elastic contact pieces 51 are driven at the same time, and then one of the liquid supply branch pipes 4 is opened while the other liquid supply branch pipe 4 is closed.

[0059] Combination Figure 4 and Figure 5 A bubble detection probe 14 is fixedly connected to the body 1, and a reflector seat 213 is fixedly connected to one end of the fixed bracket 23. The reflector seat 213 extends out of the fixed shell 2 and contacts with the bubble detection probe 14. The cooperation between the bubble detection probe 14 and the reflector seat 213 is used to detect bubbles in the transport main pipe 3 to reduce the occurrence of bubbles entering the human body along the transport main pipe 3.

[0060] Combination Figure 5 and Figure 6 , the position on the inner side wall of the cover 22 corresponding to the delivery main pipe 3 is recessed inward and abuts against the outer side of the delivery main pipe 3. A vertically arranged receiving groove 214 is provided on the base plate 21, and the position of the receiving groove 214 corresponds to the position of the delivery main pipe 3. A pressure detection mechanism 6 is arranged between the body 1 and the base plate 21, and an elastic pressing piece 61 is arranged in the receiving groove 214, the top of the elastic pressing piece 61 is fixedly connected to the top wall of the receiving groove 214, and the bottom of the elastic pressing piece 61 is its free end. The free end of the elastic pressing piece 61 abuts against the delivery main pipe 3 on one side facing the delivery main pipe 3, and a small convex piece 62 is fixedly connected to the other side of the free end of the elastic pressing piece 61. A pressure detection probe 63 is fixedly connected to the body 1, and the detection end of the pressure detection probe 63 abuts against the small convex piece 62, and a rubber waterproof membrane 631 is provided on the outer side of the pressure detection probe 63. When liquid flows in the delivery main pipe 3, the liquid in the delivery main pipe 3 applies a force to the delivery main pipe 3, and the delivery main pipe 3 applies a force to the free end of the elastic pressing sheet 61. The free end of the elastic pressing sheet 61 transmits the force to the pressure detection probe 63, thereby detecting the pressure of the delivery main pipe 3.

[0061] Reference Figure 2The machine body 1 is provided with a clamping assembly 7 for fixing it at a specified position, and the clamping assembly 7 includes a U-shaped clamp 71 detachably connected to the machine body 1 and a clamping rod 72 threadedly connected to the U-shaped clamp 71. The clamping rod 72 is threadedly connected to one of the free ends of the U-shaped clamp 71, and the axial direction of the clamping rod 72 is arranged along the distribution direction of the two free ends of the clamping rod 72. One end of the clamping rod 72 located on the inner side of the U-shaped clamp 71 is tightly connected with a circular pressing block 721 using a screw, and the other end of the clamping rod 72 is fixedly connected with a rotating handle. When in use, the U-shaped clamp 71 is sleeved on a position such as an infusion stand, and the clamping rod 72 is rotated to make the circular pressing block 721 press against the infusion stand to fix the nutrition pump.

[0062] Combination Figure 2 , Figure 8 and Fig. 9 A block profile 711 is fixedly connected to the outer wall of the U-shaped clip 71, and a square-shaped snap plate 712 is fixedly connected to one end of the block profile 711 facing away from the U-shaped clip 71. The snap plate 712 has four side walls along its circumference respectively provided with snap-in grooves 7121.

[0063] A rectangular buckle cover portion 8 is fixedly connected to the position on the body 1 corresponding to the U-shaped clip 71. A buckle cavity 81 adapted to the buckle plate 712 is provided on the side of the buckle cover portion 8 facing the body 1. A groove 82 for making way for the block profile 711 is provided at the bottom end of the buckle cover portion 8. An opening for the buckle plate 712 to enter the buckle cavity 81 is provided at the bottom end of the buckle cover portion 8. The buckle plate 712 is inserted into the buckle cavity 81 through the opening, and the block profile 711 is located in the groove 82.

[0064] A receiving groove 83 is provided on one side of the buckle cover part 8 where the buckle cavity 81 is provided, and a connecting port 86 for connecting the receiving groove 83 and the buckle cavity 81 is provided between the receiving groove 83 and the buckle cavity 81. A clamping rod 84 is provided in the receiving groove 83 to be clamped with the buckle plate 712. One end of the clamping rod 84 is hinged in the receiving groove 83, and the other end extends from the receiving groove 83 to the buckle cover part 8. There is a movable margin between the clamping rod 84 and the receiving groove 83. A clamping block 841 is provided on the side of the clamping rod 84 facing the buckle cavity 81. The clamping block 841 passes through the connecting port 86 and is inserted into the clamping groove 7121 of the buckle plate 712 to limit the buckle plate 712 and prevent the buckle plate 712 from escaping from the buckle cavity 81.

[0065] A compression spring 85 is fixedly connected to one side of the clamping rod 84 facing away from the buckle, and one end of the compression spring 85 facing away from the clamping rod 84 is fixedly connected to the accommodating groove 83. The compression spring 85 exerts a force on the clamping rod 84 toward the clamping groove 7121, so that the clamping block 841 remains inserted into the clamping groove 7121, thereby realizing a detachable connection between the clamping plate 712 and the body 1.

[0066] When the U-shaped clip 71 is clamped on the infusion stand, whether horizontally or vertically, the buckle cover part 8 on the body 1 is facing the buckle plate 712, and the clamping rod 84 is manually moved to move the clamping block to the connecting port 86. When the buckle plate 712 is fully inserted into the buckle cavity 81, the clamping rod 84 is released. Under the action of the compression spring 85, the clamping rod 84 drives the clamping block to be inserted into the clamping groove 7121, thereby locking the buckle plate 712 and thus achieving the installation and fixation of the nutrient pump.

[0067] The implementation principle of a dual-channel nutrition pump with flushing function in the embodiment of the present application is:

[0068] Of the two liquid supply branches 4 of the nutrient pump of the present application, one is used for conveying nutrient solution and the other is used for conveying clean water. At the beginning, both liquid supply branches 4 are squeezed by the abutment portion 53, preventing most of the liquid in the liquid supply branch 4 from passing through. When the nutrient pump is used, the motor 541 is started, and the driving piece 543 and the adapter shaft 542 rotate under the action of the motor 541, and the free end of the driving piece 543 extends into the inner side of the bending portion 52, and the lower abutment surface 5431 abuts against the upper abutment surface 521, driving the bending portion 52 to move away from the liquid supply branch 4, thereby driving the elastic abutment piece 51 and the abutment portion 53 to move away from the liquid supply branch 4. The squeeze on the liquid supply branch pipe 4 is released, so that the liquid supply branch pipe 4 is in a flow state; when one of the bent portions 52 moves away from the side of the liquid supply branch pipe 4 under the action of the free end of the driving piece 543, the driving block 544 rotates together with the adapter shaft 542, and the end of the driving block 544 close to the other bent portion 52 abuts against the inclined surface 522 of the bent portion 52, and applies a force to the inclined surface 522, so that the bent portion 52, the elastic abutting piece 51 and the abutting portion 53 where the inclined surface 522 is located move toward the liquid supply branch pipe 4, until the liquid supply branch pipe 4 is completely squeezed and blocked, so that the delivery main pipe 3 is only connected to one of the liquid supply branch pipes 4. When switching is required, the motor 541 can be rotated in the opposite direction, so as to realize the switching of different liquid types, which is convenient for the operator to switch between different liquid types such as nutrient solution and clean water in the delivery main pipe 3, and improves the portability of the nutrient pump.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dual-channel nutrition pump with flushing function, comprising a body (1), on which a peristaltic pump (113) is fixedly arranged. Features: The machine body (1) is provided with a main delivery pipe (3), one end of which passes through a peristaltic pump (113), and the other end of which is connected to two liquid supply branches (4) via a connecting piece, and the machine body (1) is provided with a switching valve (5) for controlling one of the liquid supply branches (4) to be opened while the other liquid supply branch (4) is closed; The body (1) is fixedly connected to a base plate (21), the base plate (21) being provided with two paving grooves (212) respectively corresponding to the two liquid supply branch pipes (4), the switching valve (5) comprising two elastic contact pieces (51) respectively arranged in the two paving grooves (212), one end of the elastic contact piece (51) being fixed in the paving groove (212), the other end of the elastic contact piece (51) being a free end, the free end of the elastic contact piece (51) protruding toward one side of the liquid supply branch pipe (4) to form an abutment portion (53), the abutment portion (53) pressing and abutting the liquid supply branch pipe (4); The switching valve (5) further comprises a driving assembly (54) arranged on the body (1), the driving assembly (54) being used to drive one of the abutting portions (53) to move away from the liquid supply branch pipe (4) to release the squeezing of the liquid supply branch pipe (4), and at the same time to move the other abutting portion (53) towards the liquid supply branch pipe (4) to completely squeeze and block the liquid supply branch pipe (4); The elastic contact piece (51) is arranged vertically, and one end of the elastic contact piece (51) in the vertical direction is fixedly arranged in the clearance groove (212); The driving assembly (54) comprises a motor (541) fixedly mounted horizontally on the machine body (1); a driving member is fixedly mounted on the output shaft of the motor (541); the driving member comprises a driving plate (543) fixedly mounted on the output shaft of the motor (541); two free ends of the driving plate (543) are symmetrically arranged and correspond to the free ends of the two elastic contact plates (51); the driving plate (543) is located on a side of the base plate (21) facing away from the liquid supply branch pipe (4); and the driving plate (543) is arranged on the side of the base plate (21) facing away from the liquid supply branch pipe (4). ) is provided with a lower abutting surface (5431), a free end of the elastic abutting piece (51) is provided with an upper abutting surface (521) on the side facing the liquid supply branch pipe (4), the driving member further comprises a driving block (544), the lower abutting surface (5431) can abut against the upper abutting surface (521) to drive one of the elastic abutting pieces (51) to move away from the liquid supply branch pipe (4), and at the same time, the other elastic abutting piece (51) can move towards the liquid supply branch pipe (4) under the action of the driving block (544); An inclined surface (522) is provided on the side of the free end of the elastic contact piece (51) facing away from the liquid supply branch pipe (4); the driving block (544) is located between the two inclined surfaces (522); and one end of the driving block (544) along the circumference of the output shaft of the motor (541) can contact the inclined surface (522); and under the action of the driving block (544), the elastic contact piece (51) can move toward the liquid supply branch pipe (4) until the liquid supply branch pipe (4) is completely squeezed and blocked.

2. A dual-channel nutrition pump with flushing function according to claim 1, Features: A cover body (22) matching with the base plate (21) is snap-connected to the side facing away from the machine body (1).

3. A dual-channel nutrition pump with flushing function according to claim 2, Features: The machine body (1) is fixedly provided with a travel switch (131), and the cover body (22) is fixedly provided with a contact probe (223) corresponding to the travel switch (131).

4. A dual-channel nutrition pump with flushing function according to claim 3, Features: A bubble detection probe (14) is fixedly provided on the machine body (1); an inner shell (11) is provided on one of the side walls of the machine body (1); an upper accommodating area (111) and a lower accommodating area (112) are provided on the inner shell (11); a fixed shell (2) with a hollow inner cavity is detachably connected to the outer wall of the inner shell (11) in the upper accommodating area (111); a reflective seat (213) corresponding to the bubble detection probe (14) is fixedly provided on the fixed shell (2); and the position of the reflective seat (213) corresponds to the position of the transport main pipe (3).

5. A dual-channel nutrition pump with flushing function according to claim 1, Features: A vertically arranged receiving groove (214) is provided on the base plate (21), and the position of the receiving groove (214) corresponds to the position of the transport main pipe (3); a pressure detection mechanism (6) is provided between the machine body (1) and the base plate (21); an elastic pressing piece (61) is provided in the receiving groove (214), the top end of the elastic pressing piece (61) is fixedly connected to the top wall of the receiving groove (214), and the bottom end of the elastic pressing piece (61) is a free end; the free end of the elastic pressing piece (61) abuts against the transport main pipe (3) on one side thereof, and the other side of the free end of the elastic pressing piece (61) is fixedly connected to the top wall of the transport main pipe (3). A small convex piece (62) is provided; a pressure detection probe (63) is fixedly connected to the machine body (1); the detection end of the pressure detection probe (63) is in contact with the small convex piece (62); and a rubber waterproof membrane (631) is provided on the outer side of the pressure detection probe (63); when liquid flows in the delivery main pipe (3), the liquid in the delivery main pipe (3) exerts a force on the delivery main pipe (3), and the delivery main pipe (3) exerts a force on the free end of the elastic pressing piece (61), and the free end of the elastic pressing piece (61) transmits the force to the pressure detection probe (63), thereby realizing the detection of the pressure of the delivery main pipe (3).

6. A dual-channel nutrition pump with flushing function according to claim 1, Features: The machine body (1) is provided with a clamping assembly (7) for fixing it at a designated position.

7. A dual-channel nutrition pump with flushing function according to claim 6, Features: The clamping assembly (7) comprises a U-shaped clamp (71) detachably connected to the machine body (1), and a clamping rod (72) threadedly connected to one of the free ends of the U-shaped clamp (71) is provided.

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