Nutrition pump valve

Abstract

The utility model discloses a nutrition pump valve which comprises a main valve body assembly arranged in an outer shell, the interior of the main valve body assembly is divided into a main flow guide cavity and an adjusting cavity through a partition plate, the end, away from the adjusting cavity, of the main flow guide cavity is provided with a conical flow guide groove which is coaxially communicated, and the caliber of the end, close to the adjusting cavity, of the conical flow guide groove is larger than that of the end away from the adjusting cavity. The adjusting cavity is communicated with the outside through a liquid inlet pipeline, and the tail end of the conical flow guide groove is communicated with the outside through a liquid outlet pipeline. According to the nutrition pump valve, the conical valve element with the adjustable position is arranged in the main valve body, transmission structures such as the threaded rod, the gear set and the rotary knob are matched, fine adjustment of nutrient solution flow is achieved, adjustment response is stable, the visualization degree is high, infusion precision is improved, and the nutrition pump valve is convenient to use. And individual requirements of different patients in clinical use can be met.

Description

Technical Field

[0001] This utility model relates to the technical field of nutrition pump accessories, and in particular to a nutrition pump valve. Background Technology

[0002] With the widespread application of clinical enteral nutrition support technology, nutrition pumps have gradually become common supply equipment in hospitals and nursing facilities. Nutrition pumps continuously and stably deliver nutritional solutions into the patient's digestive tract through delivery tubing and valves, playing a vital role in nutritional supplementation and rehabilitation therapy. Existing nutrition pump systems often use control valves to regulate flow, prevent backflow, and enable quick connection and replacement to meet diverse clinical needs. Therefore, the design of the valve body structure is particularly crucial for improving infusion efficiency and ease of use.

[0003] However, existing nutrient pump valves generally suffer from problems such as complex structure, poor adjustment accuracy, inconvenient installation and replacement, and insufficient sealing performance. On the one hand, some valve bodies lack effective flow control mechanisms, making precise adjustment difficult; on the other hand, quick-connect couplings are generally not secure, easily leading to leakage and detachment. Therefore, there is an urgent need for a nutrient pump valve with a reasonable structure, precise adjustment, convenient installation, and reliable sealing to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a nutrient pump valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A nutrient pump valve includes a main valve body assembly disposed within a housing. The main valve body assembly is divided by a partition to form a main flow chamber and a regulating chamber. The main flow chamber has a coaxially connected conical guide groove at the end away from the regulating chamber. The diameter of the conical guide groove near the regulating chamber is larger than that at the end away from the regulating chamber, and its maximum diameter is smaller than the inner diameter of the main flow chamber. An inlet pipe is connected to the side wall of the regulating chamber, and an outlet pipe is connected to the end of the conical guide groove. The ends of both the inlet pipe and the outlet pipe extend to the outside of the housing. Two sets of quick-connect assemblies are installed at the ends of the inlet and outlet pipes, respectively, for connecting the inlet and outlet pipes of the nutrient pump. A valve core assembly is installed in the main flow chamber. The valve core assembly includes a conical body that matches the conical guide groove. A connecting rod is fixedly connected to the end of the conical body away from the conical guide groove. The end of the connecting rod extends movably through the partition into the regulating chamber and is fixedly connected to a moving block. A threaded rod is threadedly connected to the moving block. One end of the threaded rod is rotatably connected to the partition, and the other end of the threaded rod passes through the moving block and is fixedly connected to a large gear. The large gear meshes with a small gear. A rotating shaft is fixedly connected to the axis of the small gear. The end of the rotating shaft movably passes through the regulating chamber and the side wall of the outer shell and is fixedly connected to a knob.

[0007] Preferably, the main valve body assembly is a hollow tubular shell structure with closed ends, injection molded from transparent medical-grade plastic, and an observation window is provided on the shell, which is located directly above the main flow cavity.

[0008] Preferably, the quick connector assembly includes a quick connector male end and a quick connector female end. The quick connector male end consists of a first tube body and a nut. One end of the first tube body is connected to a connecting pipe, and a locking block is fixedly connected to the outer wall of the other end of the first tube body. The top of the nut has a through hole and is movably sleeved on the first tube body through the through hole. The first tube body is located inside the nut, and the outer diameter of the first tube body is larger than the inner diameter of the through hole. The quick connector female end includes a second tube body that is threadedly connected to the nut. The second tube body is fixedly sleeved on the outer wall of the end of the liquid inlet pipe or liquid outlet pipe. The inner wall of the end of the second tube body has an annular groove that matches the locking block. The top of the groove has a notch for insertion. The first tube body and the second tube body are quickly snapped together by the locking block and the groove.

[0009] Preferably, a sealing ring is fitted between the first tube and the second tube.

[0010] Preferably, a silicone check valve is snapped onto the end of the liquid outlet pipe.

[0011] Preferably, a piston body is fixedly sleeved on the connecting rod, the piston body is located between the liquid inlet pipe and the partition, and the piston body matches the main flow chamber.

[0012] Preferably, a first bearing is sleeved on the threaded rod, and a connecting block is rotatably connected to the threaded rod through the first bearing. The connecting block is located between the moving block and the large gear.

[0013] Preferably, the outer ring of the rotating shaft is fitted with a second bearing, and the rotating shaft is rotatably connected to the end sidewall of the adjusting cavity through the second bearing.

[0014] This utility model has the following beneficial effects:

[0015] 1. The nutrition pump valve provided by this utility model has an adjustable conical valve core in the main valve body, and is equipped with a transmission structure such as a threaded rod, gear set and knob, which realizes fine adjustment of the flow rate of nutrition solution. The adjustment response is stable and highly visible, which improves the infusion accuracy and helps to meet the personalized needs of different patients in clinical use.

[0016] 2. This utility model achieves rapid assembly and disassembly of inlet and outlet liquid pipelines and efficient sealing by setting a quick-connect assembly with a locking block and slot structure, combined with a sealing ring and nut fixing method. This structure not only enhances the connection's firmness and prevents liquid leakage, but also significantly improves the efficiency of replacing pipelines or maintaining valve bodies, making it more convenient and reliable to use.

[0017] 3. In this design, a piston body is added to the valve core connecting rod, and a silicone check valve is installed at the end of the outlet pipe to effectively prevent backflow of the nutrient solution and improve the safety of the infusion system. Meanwhile, the outer casing is equipped with a transparent observation window, allowing medical personnel to monitor the fluid status in real time, further enhancing the device's clinical adaptability and ease of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point B;

[0022] Figure 5 In this utility model Figure 2 Enlarged schematic diagram of the structure at point C;

[0023] Figure 6 This is a schematic diagram of the structure of the large gear and the small gear in this utility model;

[0024] Figure 7 This is a schematic diagram of the nut structure in this utility model;

[0025] Figure 8 This is a schematic diagram of the first tube structure in this utility model;

[0026] Figure 9 This is a schematic diagram of the second tube structure in this utility model.

[0027] In the diagram: 1. Outer shell; 101. Observation window; 2. Main valve body assembly; 201. Baffle plate; 202. Main flow chamber; 203. Adjustment chamber; 204. Conical guide groove; 205. Inlet pipe; 206. Outlet pipe; 3. Quick connector female end; 301. First pipe body; 302. Connecting pipe; 303. Locking block; 304. Nut; 305. Through hole; 4. Quick connector female end; 401. Second pipe body; 402. Locking groove; 403. Notch; 5. Conical body; 6. Connecting rod; 7. Moving block; 8. Threaded rod; 9. Large gear; 10. Small gear; 11. Rotating shaft; 12. Knob; 13. Piston body; 14. First bearing; 15. Connecting block; 16. Second bearing; 17. Silicone check valve; 18. Sealing ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1-9 A nutrient pump valve includes a main valve body assembly 2 disposed within a housing 1. The main valve body assembly 2 is internally divided by a partition 201 to form a main flow chamber 202 and a regulating chamber 203. The main flow chamber 202, away from the regulating chamber 203, has a coaxially connected conical guide groove 204. The diameter of the conical guide groove 204 near the regulating chamber 203 is larger than that of the distant end, and its maximum diameter is smaller than the inner diameter of the main flow chamber 202. An inlet pipe 205 is connected to the side wall of the regulating chamber 203, and an outlet pipe 206 is connected to the end of the conical guide groove 204. The ends of both the inlet pipe 205 and the outlet pipe 206 extend to the outside of the housing 1. Two sets of quick-connect coupling assemblies are disposed at the ends of the inlet pipe 205 and the outlet pipe 206. The components are used to connect the inlet and outlet pipes of the nutrient pump respectively; the valve core assembly is set in the main flow chamber 202. The valve core assembly includes a conical body 5 that matches the conical guide groove 204. A connecting rod 6 is fixedly connected to one end of the conical body 5 away from the conical guide groove 204. The end of the connecting rod 6 extends movably through the partition 201 into the adjustment chamber 203 and is fixedly connected to a moving block 7. A threaded rod 8 is threadedly connected to the moving block 7. One end of the threaded rod 8 is rotatably connected to the partition 201. The other end of the threaded rod 8 passes through the moving block 7 and is fixedly connected to a large gear 9. The large gear 9 meshes with a small gear 10. A rotating shaft 11 is fixedly connected to the axis of the small gear 10. The end of the rotating shaft 11 moves movably through the adjustment chamber 203 and the side wall of the outer shell 1 and is fixedly connected to a knob 12.

[0030] In this embodiment, the main valve body assembly 2 is divided into a main flow chamber 202 and a regulating chamber 203 by a partition 201 inside the main valve body assembly 2. The inlet pipe 205 and the outlet pipe 206 are respectively connected to the regulating chamber 203 and the conical guide channel 204 to realize the inflow and outflow of nutrient solution. The conical guide channel 204 and the conical body 5 cooperate to form a valve port structure for regulating flow. The conical body 5 is connected to the moving block 7 through the connecting rod 6. The moving block 7 is threadedly engaged with the threaded rod 8. Under the action of the transmission mechanism composed of the large gear 9, the small gear 10 and the rotating shaft 11, the threaded rod 8 can be rotated by rotating the knob 12, thereby driving the moving block 7 to move linearly, and then driving the conical body 5 to slide along the axial direction to realize the adjustment of the opening of the guide channel. The cooperation between the small gear 10 and the large gear 9 plays the role of transmission deceleration and force amplification. Since the small gear 10 has fewer teeth, one rotation can drive the large gear 9 with more teeth to rotate slowly, so that the threaded rod 8 on the large gear 9 rotates at a smaller angular velocity. In this way, by applying a small amount of rotational force to the pinion 10 through the knob 12, a larger torque output can be achieved to the threaded rod 8, thereby pushing the moving block 7 to move axially more smoothly and precisely, and finally achieving precise displacement of the cone 5 within the cone-shaped guide groove 204, improving the sensitivity of adjustment and control accuracy; quick-connect assemblies are provided at the ends of the liquid inlet pipe 205 and the liquid outlet pipe 206, which facilitates quick disassembly and sealing connection of the pipelines. The overall structure can achieve the functions of precise control, convenient operation and efficient maintenance.

[0031] In this utility model, the main valve body assembly 2 is a hollow tubular shell structure with both ends closed, which is injection molded from transparent medical-grade plastic. An observation window 101 is provided on the outer shell 1, and the observation window 101 is located directly above the main flow cavity 202.

[0032] In this embodiment, the main valve body assembly 2 is injection molded from transparent medical-grade plastic. The overall structure is a hollow tubular shell with closed ends, which has good sealing performance and visibility, effectively preventing contamination and facilitating observation of the internal fluid status. The outer shell 1 is set on the outside to protect the main valve body assembly 2 from external mechanical damage and improve the stability of the overall structure. The observation window 101 on the outer shell 1 is located directly above the main flow chamber 202, allowing medical staff to clearly and intuitively observe the flow of nutrient solution in the main flow chamber 202 during infusion, realizing real-time monitoring of the pump and valve operating status and improving the safety and reliability of use.

[0033] In this invention, the quick connector assembly includes a quick connector male end 3 and a quick connector female end 4. The quick connector male end 3 is composed of a first tube body 301 and a nut 304. One end of the first tube body 301 is connected to a connecting tube 302, and the outer wall of the other end of the first tube body 301 is fixedly connected to a locking block 303. The top of the nut 304 has a through hole 305 and is movably sleeved on the first tube body 301 through the through hole 305. The first tube body 301 is located inside the nut 304, and the outer diameter of the first tube body 301 is large. Within the inner diameter of the through hole 305, the female end 4 of the quick connector includes a second tube body 401 that is threadedly connected to the nut 304. The second tube body 401 is fixedly sleeved on the outer wall of the end of the liquid inlet pipe 205 or the liquid outlet pipe 206. The inner wall of the end of the second tube body 401 is provided with an annular groove 402 that matches the locking block 303. The top of the groove 402 is provided with a notch 403 for the locking block 303 to be inserted. The first tube body 301 and the second tube body 401 are quickly snapped together by the locking block 303 and the groove 402.

[0034] In this embodiment, the quick connector assembly consists of a quick connector male end 3 and a quick connector female end 4. The quick connector male end 3 includes a first tube body 301, a connecting tube 302, a nut 304, and a locking block 303, enabling quick plug-in connection with the nutrient pump fluid circuit. The quick connector female end 4 includes a second tube body 401, which is connected to the nut 304 by threads and fixedly sleeved at the end of the inlet pipe 205 or the outlet pipe 206. Its inner wall is provided with an annular groove 402 and a top notch 403, which is connected to the locking block 3 on the outer wall of the first tube body 301. 03 Matching and fitting: During the insertion process, quick snap-fit ​​positioning can be achieved, thereby enabling a firm connection between the two pipe bodies; The top of the nut 304 is provided with a through hole 305, which is movably sleeved on the first pipe body 301, giving it a certain degree of axial movement freedom during assembly. After tightening the nut, axial pressure can be applied to the entire joint, which helps to firmly engage the locking block 303 and the locking groove 402. At the same time, in the tightened state, the first pipe body 301 and the second pipe body 401 can fit tightly together, thereby enhancing the sealing and stability of the connection and preventing liquid leakage.

[0035] In this utility model, a sealing ring 18 is installed between the first tube body 301 and the second tube body 401.

[0036] In this embodiment, a sealing ring 18 is fitted between the first tube 301 and the second tube 401. During the insertion of the first tube 301 into the second tube 401 and the locking connection achieved through the locking block 303 and the locking groove 402, the sealing ring 18 is pressed tightly at the joint, forming a reliable sealing structure to prevent leakage or dripping of the nutrient solution during delivery. The sealing ring 18 not only improves the sealing performance at the interface but also enhances the safety and stability of the entire quick-connect assembly under high pressure or rapid flow environments, ensuring the cleanliness and reliability of the nutrient pump valve during clinical use.

[0037] In this invention, a silicone check valve 17 is engaged at the end of the liquid outlet pipe 206.

[0038] In this embodiment, a silicone check valve 17 is snap-fitted to the end of the outlet pipe 206. This check valve 17 allows liquid to flow in one direction and prevents backflow. Through the snap-fit ​​connection, the silicone check valve 17 is tightly connected to the outlet pipe 206, ensuring sealing and stability, effectively preventing backflow of nutrient solution in the pump valve system, ensuring the safety and accuracy of the infusion process, and improving the overall reliability of the nutrient pump valve.

[0039] In this utility model, a piston body 13 is fixedly sleeved on the connecting rod 6. The piston body 13 is located between the liquid inlet pipe 205 and the partition plate 201, and the piston body 13 is matched with the main flow chamber 202.

[0040] In this embodiment, a piston body 13 is fixedly sleeved on the connecting rod 6. The piston body 13 is disposed between the liquid inlet pipe 205 and the partition plate 201, and seals against the inner wall of the main flow chamber 202, thereby playing a role in separation and sealing during adjustment. When the connecting rod 6 moves axially under the drive of the knob 12, the piston body 13 moves synchronously, thereby adjusting the effective volume and flow channel unobstructedness in the main flow chamber 202, and precisely controlling the flow rate and on / off state of the liquid in conjunction with the conical body 5. This structure not only enhances the sealing performance and control accuracy of the pump valve, but also avoids liquid backflow or turbulence, improving the stability of the delivery.

[0041] In this utility model, a first bearing 14 is sleeved on the threaded rod 8, and a connecting block 15 is rotatably connected to the threaded rod 8 through the first bearing 14. The connecting block 15 is located between the moving block 7 and the large gear 9.

[0042] In this embodiment, a first bearing 14 is sleeved on the threaded rod 8. This bearing 14 supports the threaded rod 8 to achieve smooth rotation and reduce friction and wear. The threaded rod 8 is rotatably connected to the connecting block 15 via the first bearing 14. The connecting block 15 is located between the moving block 7 and the large gear 9, and serves to transmit rotational torque and stabilize the connection. This structure ensures that the threaded rod 8 maintains smooth operation during rotational adjustment, driving the moving block 7 to precise displacement, thereby achieving fine control of the valve core assembly and improving the sensitivity and reliability of valve adjustment.

[0043] In this invention, the outer ring of the rotating shaft 11 is fitted with a second bearing 16, and the rotating shaft 11 is rotatably connected to the end side wall of the adjusting cavity 203 through the second bearing 16.

[0044] In this embodiment, a second bearing 16 is sleeved on the outer ring of the rotating shaft 11. This bearing 16 supports the rotating shaft 11 to achieve stable and low-friction rotational movement. The rotating shaft 11 is rotatably connected to the end sidewall of the adjusting cavity 203 via the second bearing 16, ensuring smooth rotation of the rotating shaft 11 within the adjusting cavity 203 while effectively reducing mechanical wear and operating resistance. This structural design improves the flexibility and durability of the knob 12 operation, achieving precise control and long-term stable performance of the valve core assembly adjustment.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A nutrient pump valve, characterized in that, include: A main valve body assembly (2) is installed inside the outer shell (1). The main valve body assembly (2) is divided by a partition (201) to form a main flow chamber (202) and a regulating chamber (203). The main flow chamber (202) is provided with a coaxially connected conical guide groove (204) at one end away from the regulating chamber (203). The diameter of the conical guide groove (204) near the regulating chamber (203) is larger than that at the other end, and its maximum diameter is smaller than the inner diameter of the main flow chamber (202). The side wall of the regulating chamber (203) is connected to an inlet pipe (205). The end of the conical guide groove (204) is connected to an outlet pipe (206). The ends of the inlet pipe (205) and the outlet pipe (206) both extend to the outside of the outer shell (1). Two sets of quick-connect assemblies are provided at the ends of the inlet pipe (205) and the outlet pipe (206), respectively, and the two sets of quick-connect assemblies are used to connect the inlet and outlet pipes of the nutrient pump; The valve core assembly is located in the main flow chamber (202). The valve core assembly includes a conical body (5) that matches the conical flow guide groove (204). A connecting rod (6) is fixedly connected to one end of the conical body (5) away from the conical flow guide groove (204). The end of the connecting rod (6) extends through the partition plate (201) into the regulating chamber (203) and is fixedly connected to a moving block (7). The moving block (7) is threadedly connected to a threaded rod (8). One end of the threaded rod (8) is rotatably connected to the partition plate (201). The other end of the threaded rod (8) passes through the moving block (7) and is fixedly connected to a large gear (9). The large gear (9) meshes with a small gear (10). A rotating shaft (11) is fixedly connected to the axis of the small gear (10). The end of the rotating shaft (11) extends through the regulating chamber (203) and the side wall of the outer shell (1) and is fixedly connected to a knob (12).

2. A nutrient pump valve according to claim 1, characterized in that, The main valve body assembly (2) is a hollow tubular shell structure with closed ends, which is injection molded from transparent medical-grade plastic. An observation window (101) is provided on the outer shell (1), and the observation window (101) is located directly above the main flow cavity (202).

3. A nutrient pump valve according to claim 1, characterized in that, The quick connector assembly includes a quick connector female end (3) and a quick connector female end (4). The quick connector female end (3) consists of a first tube body (301) and a nut (304). One end of the first tube body (301) is connected to a connecting tube (302), and the other end of the first tube body (301) is fixedly connected to a locking block (303). The top of the nut (304) is provided with a through hole (305) and is movably sleeved on the first tube body (301) through the through hole (305). The first tube body (301) is located inside the nut (304), and the outer diameter of the first tube body (301) is larger than the through hole (305). The inner diameter of the hole (305), the quick connector female end (4) includes a second tube body (401) threadedly connected to the nut (304), the second tube body (401) is fixedly sleeved on the outer wall of the end of the liquid inlet pipe (205) or the liquid outlet pipe (206), the inner wall of the end of the second tube body (401) is provided with an annular groove (402) matching the locking block (303), the top of the groove (402) is provided with a notch (403) for the locking block (303) to be inserted, the first tube body (301) and the second tube body (401) are quickly snapped together by the locking block (303) and the groove (402).

4. A nutrient pump valve according to claim 3, characterized in that, A sealing ring (18) is installed between the first tube body (301) and the second tube body (401).

5. A nutrient pump valve according to claim 1, characterized in that, The end of the liquid outlet pipe (206) is fitted with a silicone check valve (17).

6. A nutrient pump valve according to claim 1, characterized in that, A piston body (13) is fixedly sleeved on the connecting rod (6). The piston body (13) is located between the liquid inlet pipe (205) and the partition plate (201), and the piston body (13) matches the main flow chamber (202).

7. A nutrient pump valve according to claim 1, characterized in that, The threaded rod (8) is fitted with a first bearing (14), and the threaded rod (8) is rotatably connected to a connecting block (15) through the first bearing (14). The connecting block (15) is located between the moving block (7) and the large gear (9).

8. A nutrient pump valve according to claim 1, characterized in that, The outer ring of the rotating shaft (11) is fitted with a second bearing (16), and the rotating shaft (11) is rotatably connected to the end side wall of the adjusting cavity (203) through the second bearing (16).

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