Pressure release valve for blood purification
By using the matching structure of threaded rod, hexagonal rotary handle and ball valve in the pressure relief valve for blood purification, the fluid and hydraulic pressure is adjusted, and the use of rubber seals is avoided, and the problem of fluid pollution in the prior art is solved, and the structure is simple and Improved practicality.
Patent Information
- Application Number
- CN202420480218.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-03-13
AI Technical Summary
When used, the existing pressure relief valve for blood purification is complex in structure and a large number of rubber seals, resulting in fluid contamination when high-pressure liquid flows in.
A pressure relief valve for blood purification is designed, using a mating structure of threaded rod, hexagonal rotary handle, valve body, thread sleeve, ball valve, connecting ring and spring. The height of the connecting ring is adjusted by rotating the hexagonal rotary handle and thread rod. The fluid hydraulic pressure of the third infusion hole avoids the use of rubber seals, and forms three channels through bent pipes and straight pipes, achieving selective connections to control the return or circulation of the fluid.
It realizes the simple structure, reduces the possibility of fluid contamination, reduces costs, and increases the practicality of the equipment, and can selectively control the reflow or circulation of the fluid according to actual conditions.
Smart Images
Figure CN222357884U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blood purification, in particular to a pressure relief valve for blood purification. Background Art
[0002] The pressure relief valve for blood purification is a device used in pressure devices, especially suitable for blood purification process. Its main function is to reduce the pressure when the liquid pressure is too high, so that it can pass through the cavity of the pressure relief valve and flow out through the outlet pipe;
[0003] When the existing blood purification pressure relief valve is in use, when the liquid pressure in the container connected to the valve body liquid inlet pipe is too high, the liquid pushes open the sealing rubber ring blocking the liquid inlet through the liquid inlet pipe, and the high-pressure liquid flows into the cavity of the pressure relief valve and flows out through the liquid outlet pipe, thereby achieving the purpose of pressure reduction;
[0004] However, during use, the structure is complex, the fluid is polluted, and a large number of rubber seals are used. Utility Model Content
[0005] In order to solve the above problems, the utility model provides a pressure relief valve for blood purification, which has a simple structure and avoids the use of rubber sealing parts, thereby reducing costs and fluid pollution.
[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a pressure relief valve for blood purification, comprising a valve body, a threaded sleeve is fixedly connected to the top of the valve body, a threaded rod is provided in the threaded sleeve and is threadedly connected to the threaded sleeve, a ball valve is provided in the valve body and can move up and down in the valve body, the ball valve divides the valve body into a first cavity and a second cavity, one end of the threaded rod located in the first cavity is fixedly connected to a connecting ring, a spring is provided between the connecting ring and the ball valve, a bent pipe is provided at one end of the bottom of the valve body, a straight pipe is provided at the other end of the bottom of the valve body, the straight pipe is communicated with the second cavity, the bent pipe is communicated with the second cavity, a liquid inlet pipe is provided at the bottom of the valve body, and the liquid inlet pipe is communicated with the second cavity.
[0007] As an improvement, the threaded rod is provided with two fixedly connected hexagonal rotating handles.
[0008] As an improvement, a first infusion hole is provided in the straight tube, and the top of the first infusion hole close to one end of the second cavity is communicated with the second cavity.
[0009] As an improvement, a second infusion hole is provided in the curved tube, and the second infusion hole is communicated with the second cavity at one end close to the second cavity.
[0010] As an improvement, a third infusion hole is provided in the liquid inlet tube, and the top of the third infusion hole is communicated with the second cavity.
[0011] As an improvement, a cylindrical plug matching the bottom of the second cavity is provided at the bottom of the ball valve, and the diameter of the cylindrical plug is larger than the connection point between the second cavity and the third infusion hole.
[0012] The advantages of the utility model compared with the prior art are:
[0013] 1. Through the cooperation among the threaded rod, the hexagonal rotating handle, the valve body, the threaded sleeve ball valve, the connecting ring and the spring, the height of the connecting ring 14 in the valve body 1 is adjusted by rotating the hexagonal rotating handle 4 and the threaded rod 3, thereby adjusting the fluid hydraulic pressure in the third infusion hole 18. No rubber seal is required, the structure is simple, and the possibility of fluid contamination is reduced;
[0014] 2. The second infusion hole is connected to the second cavity near one end of the second cavity. The straight tube is provided with a first infusion hole. The top of the first infusion hole near one end of the second cavity is connected to the second cavity to form three channels, which can be selectively connected according to actual usage to form reflux or circulation, thereby increasing practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural schematic diagram of a pressure relief valve for blood purification.
[0016] Figure 2 The utility model is a top view of a pressure relief valve for blood purification.
[0017] Figure 3 The utility model is a cross-sectional view of a pressure relief valve for blood purification.
[0018] As shown in the figure: 1. valve body; 2. threaded sleeve; 3. threaded rod; 4. hexagonal rotating handle; 7. straight pipe; 8. bent pipe; 9. liquid inlet pipe; 10. first cavity; 11. first infusion hole; 12. second infusion hole; 13. ball valve; 14. connecting ring; 15. spring; 16. second cavity; 18. third infusion hole; 19. cylindrical plug. DETAILED DESCRIPTION
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0020] Combined with Figure 1A pressure relief valve for blood purification comprises a valve body 1, a threaded sleeve 2 is fixedly connected to the top of the valve body 1, a threaded rod 3 threadedly connected to the threaded sleeve 2 is arranged in the threaded sleeve 2, two fixedly connected hexagonal rotating handles 4 are arranged on the threaded rod 3, a ball valve 13 which can move up and down in the valve body 1 is arranged in the valve body 1, the ball valve 13 divides the valve body 1 into a first cavity 10 and a second cavity 16, a connecting ring 14 is fixedly connected to one end of the threaded rod 3 located in the first cavity 10, a spring 15 is arranged between the connecting ring 14 and the ball valve 13, a cylindrical plug 19 which matches the bottom of the second cavity 16 is arranged at the bottom of the ball valve 13, and the diameter of the cylindrical plug 19 is larger than the connection between the second cavity 16 and the third infusion hole 18.
[0021] With this structure, the height of the connecting ring 14 in the valve body 1 is adjusted by rotating the hexagonal rotating handle 4 and the threaded rod 3 , thereby adjusting the fluid hydraulic pressure in the third infusion hole 18 .
[0022] A curved tube 8 is provided at one end of the bottom of the valve body 1, and a second liquid infusion hole 12 is provided in the curved tube 8, and the second liquid infusion hole 12 is communicated with the second cavity 16 at one end close to the second cavity 16. A straight tube 7 is provided at the other end of the bottom of the valve body 1, and the straight tube 7 is communicated with the second cavity 16. The curved tube 8 is communicated with the second cavity 16, and a first liquid infusion hole 11 is provided in the straight tube 7, and the top of the first liquid infusion hole 11 close to one end of the second cavity 16 is communicated with the second cavity 16. A liquid inlet tube 9 is provided at the bottom of the valve body 1, and the liquid inlet tube 9 is communicated with the second cavity 16. A third liquid infusion hole 18 is provided in the liquid inlet tube 9, and the top of the third liquid infusion hole 18 is communicated with the second cavity 16.
[0023] Through this structure, a three-way channel is provided for the valve body 1, and the curved pipe 8 and the straight pipe 7 can be connected and blocked as needed, so as to control the reflux and transportation of the fluid in the valve body 1.
[0024] During the specific implementation of the utility model, the fluid is introduced by connecting the liquid inlet pipe 9, and the curved pipe 8 and the straight pipe 7 are selectively connected according to the required situation, so that the device forms a reflux or circulation. After the fluid enters the second cavity 16, the pressure applied to the ball valve 13 by the spring 15 is adjusted by the hexagonal rotating handle 4 and the threaded rod 3, thereby adjusting the internal pressure of the second cavity 16. No rubber seal is required, the structure is simple, and the possibility of fluid contamination is reduced.
[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A pressure relief valve for blood purification, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to a threaded sleeve (2), the threaded sleeve (2) is provided with a threaded rod (3) threadedly connected to the threaded sleeve (2), the valve body (1) is provided with a ball valve (13) movable up and down in the valve body (1), the ball valve (13) divides the valve body (1) into a first cavity (10) and a second cavity (16), one end of the threaded rod (3) located in the first cavity (10) is fixedly connected to a connecting ring (14), a spring (15) is provided between the connecting ring (14) and the ball valve (13), one end of the bottom of the valve body (1) is provided with a bent pipe (8), the other end of the bottom of the valve body (1) is provided with a straight pipe (7), the straight pipe (7) is communicated with the second cavity (16), the bent pipe (8) is communicated with the second cavity (16), the bottom of the valve body (1) is provided with a liquid inlet pipe (9), the liquid inlet pipe (9) is communicated with the second cavity (16).
2. A pressure relief valve for blood purification according to claim 1, characterized in that: The threaded rod (3) is provided with two fixedly connected hexagonal rotating handles (4).
3. A pressure relief valve for blood purification according to claim 1, characterized in that: A first infusion hole (11) is provided in the straight tube (7), and the top of the first infusion hole (11) close to one end of the second cavity (16) is communicated with the second cavity (16).
4. A pressure relief valve for blood purification according to claim 1, characterized in that: A second infusion hole (12) is provided in the curved pipe (8), and one end of the second infusion hole (12) close to the second cavity (16) is in communication with the second cavity (16).
5. A pressure relief valve for blood purification according to claim 1, characterized in that: A third liquid infusion hole (18) is provided in the liquid inlet pipe (9), and the top of the third liquid infusion hole (18) is communicated with the second cavity (16).
6. A pressure relief valve for blood purification according to claim 1, characterized in that: The bottom of the ball valve (13) is provided with a cylindrical plug (19) matched with the bottom of the second cavity (16), and the diameter of the cylindrical plug (19) is larger than the connection point between the second cavity (16) and the third infusion hole (18).