Check valve connecting structure easy to maintain
By designing an easy-to-disassemble valve handle seat and a slidingly connected valve core structure, the problem of difficult maintenance of the existing check valve core is solved, achieving convenient maintenance and high sealing.
Patent Information
- Application Number
- CN202421318261.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-11
AI Technical Summary
When used, the existing check valve is difficult to disassemble and maintain, resulting in the inability to repair when damaged, which increases maintenance costs and inconvenience.
A easy-to-maintenance check valve connection structure is designed to facilitate disassembly of the valve handle seat through flange connection, and fixed connection through sliding connection and fastening screws, so that the valve core part can be flexibly disassembled for maintenance.
It realizes convenient maintenance of the valve core part, reduces maintenance costs and inconvenience, and improves the service life and sealing of the valve.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to an easy-to-maintain check valve connection structure. Background Art
[0002] A check valve is a valve that can automatically open and close the valve disc depending on the flow of the medium itself to prevent the backflow of the medium. Its working principle is to achieve the switching action by relying on the deadweight of the valve disc and the pressure difference generated by the medium. Check valves are widely used in pipeline systems in the petroleum, chemical, electric power, metallurgy and other industries to prevent the backflow of the medium from damaging the equipment or system.
[0003] With the rapid development of industrial technology, valves, as key equipment for fluid control, are crucial to the safe operation of the entire fluid system in terms of performance stability and ease of maintenance. Especially in some special environments or under frequent operating conditions, valves need to withstand long-term, high-intensity use, and their maintenance difficulty and cost also increase accordingly.
[0004] When most check valves are in use, the valve core inside is usually directly hinged inside the valve body, or fixed to the valve handle inside in a non-detachable way, which has the defect of being inconvenient to disassemble and take out for maintenance. When the valve core is damaged, it cannot be disassembled for maintenance, which will cause the entire valve to be unusable, resulting in increased costs and inconvenience to users. In view of this, we propose an easy-to-maintain check valve connection structure. Utility Model Content
[0005] The purpose of the utility model is to provide an easy-to-maintain check valve connection structure to solve the defects mentioned in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] An easy-to-maintain check valve connection structure comprises a valve body and a valve handle seat connected to the valve body with a flange, a sealing cylinder is fixedly installed on the bottom surface of the valve handle seat, a guide column is fixedly installed on the top wall of the sealing cylinder, a spring is wound on the guide column, an end rod is slidably connected in the sealing cylinder, a rectangular plug rod is fixedly installed on the bottom end of the end rod, a valve core is provided at the end of the end rod, a rectangular sleeve is fixedly installed at the center position of the top surface of the valve core, the rectangular sleeve is sleeved on the rectangular plug rod and fixedly connected to the rectangular plug rod, and the outer diameters of the end rod and the rectangular plug rod decrease successively.
[0008] Preferably, two joints for pipeline connection are fixedly mounted on the valve body, and the joints are flange-connected to the external pipeline.
[0009] Preferably, an annular groove is provided on the end surface of the joint, and a sealing ring is snap-fitted in the annular groove.
[0010] Preferably, one end of the spring is fixedly mounted on the top wall of the sealing cylinder, and the other end of the spring is fixedly mounted on the top surface of the end rod.
[0011] Preferably, a rectangular hole whose top is connected to the outside is provided in the rectangular sleeve, and the rectangular insertion rod is plug-fitted into the rectangular hole.
[0012] Preferably, the size of the rectangular plug rod is matched with the size of the rectangular hole for stable plug-in mating operation.
[0013] Preferably, an outer fixing ring and an inner fixing ring are fixedly mounted on the top surface and the bottom surface of the valve core, the inner fixing ring is located at the center of the outer fixing ring, and a sealing ring is arranged between the outer fixing ring and the inner fixing ring.
[0014] Preferably, the surface of the sealing ring protrudes beyond the surfaces of the outer fixing ring and the inner fixing ring, and the sealing ring is used to abut against the valve body to perform a sealing operation.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The utility model is provided with a flange connection between the valve handle seat and the valve body, so that the valve handle seat can be easily disassembled. In addition, the valve core is driven to move by sliding up and down, and the rectangular sleeve on the valve core is fixedly connected with the rectangular plug rod by fastening screws, so that the valve core part can be easily disassembled for maintenance operations, thereby achieving the effect of facilitating maintenance.
[0017] 2. The utility model provides an outer fixing ring, an inner fixing ring and a sealing ring, so that after the top and bottom surfaces of the valve core are fitted on the inner wall of the valve body, the sealing ring fits exactly on the inner wall of the valve body to achieve a better sealing effect and improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is one of the partial structural schematic diagrams of the utility model;
[0020] Figure 3 This is the second schematic diagram of the partial structure of the utility model;
[0021] Figure 4 This is the third schematic diagram of the partial structure of the utility model;
[0022] Figure 5 This is the fourth partial structural schematic diagram of the utility model.
[0023] The meaning of each number in the figure is:
[0024] 1. Valve body; 10. Joint; 11. Annular groove; 12. Sealing ring; 13. Valve handle seat; 131. Sealing cylinder; 14. Guide column; 15. Spring; 16. End rod; 161. Rectangular plug rod;
[0025] 2. Valve core; 20. Rectangular sleeve; 21. Rectangular hole; 22. External fixing ring; 23. Internal fixing ring; 24. Sealing ring. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] See also Figure 1-Figure 5 The utility model provides a technical solution: an easy-to-maintain check valve connection structure, including a valve body 1 and a valve handle seat 13 flange-connected to the valve body 1, a sealing cylinder 131 is fixedly installed on the bottom surface of the valve handle seat 13, a guide column 14 arranged vertically is fixedly installed on the top wall of the sealing cylinder 131, a spring 15 is wound around the guide column 14, an end rod 16 is slidably connected in the sealing cylinder 131, the end rod 16 is sleeved on the guide column 14 and slidably connected with the guide column 14, a rectangular plug rod 161 is fixedly installed on the bottom end of the end rod 16, a valve core 2 is arranged at the end of the end rod 16, a rectangular sleeve 20 is fixedly installed at the center position of the top surface of the valve core 2, the rectangular sleeve 20 is sleeved on the rectangular plug rod 161 and is fixedly connected between the rectangular plug rod 161 by a plurality of fastening screws, so that after the valve handle seat 13 is disassembled, the valve core 2 can be disassembled for maintenance.
[0028] In this embodiment, the outer diameters of the end rod 16 and the rectangular insert rod 161 are successively reduced, so that the rectangular sleeve 20 can be pressed against the bottom surface of the end rod 16 for positioning operation.
[0029] Specifically, two joints 10 for pipe connection are fixedly mounted on the valve body 1 , and the joints 10 are flange-connected to external pipes; an annular groove 11 is arranged on the end surface of the joint 10 , and a sealing ring 12 is snap-fitted in the annular groove 11 .
[0030] Furthermore, one end of the spring 15 is fixedly mounted on the top wall of the sealing tube 131 , and the other end of the spring 15 is fixedly mounted on the top surface of the end rod 16 , thereby performing a pulling and limiting operation on the end rod 16 so that the end rod 16 will not fall out of the sealing tube 131 .
[0031] In addition, a rectangular hole 21 is provided in the rectangular sleeve 20, and the top thereof is connected to the outside, and the rectangular plug rod 161 is plugged into the rectangular hole 21; the size of the rectangular plug rod 161 is adapted to the size of the rectangular hole 21, which is used to stabilize the plug-in operation and facilitate the assembly operation.
[0032] It is worth mentioning that an outer fixing ring 22 and an inner fixing ring 23 are fixedly installed on the top and bottom surfaces of the valve core 2. The inner fixing ring 23 is located at the center of the outer fixing ring 22. A sealing ring 24 is arranged between the outer fixing ring 22 and the inner fixing ring 23. The surface of the sealing ring 24 protrudes from the surfaces of the outer fixing ring 22 and the inner fixing ring 23. The sealing ring 24 is used to press against the inside of the valve body 1 for sealing operation.
[0033] When the easy-to-maintain check valve connection structure of the utility model is in use, the rectangular plug rod 161 is inserted into the rectangular hole 21, and the rectangular sleeve 20 is fixedly installed on the rectangular plug rod 161 using the fastening screws, and then the valve core 2 is assembled into the valve body 1, and the valve handle seat 13 and the valve body 1 are flange-connected to complete the fixing operation. During maintenance, the fastening bolts on the valve handle seat 13 are first unscrewed, and then the valve handle seat 13 is disassembled, and then the valve core 2 is pulled out as a whole, and finally the fastening screws on the rectangular sleeve 20 are unscrewed, and the rectangular sleeve 20 is disassembled to complete the disassembly operation of the valve core 2, and then the maintenance operation is performed.
[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An easy-to-maintain check valve connection structure, comprising a valve body (1) and a valve handle seat (13) flange-connected to the valve body (1), characterized in that: A sealing cylinder (131) is fixedly mounted on the bottom surface of the valve handle seat (13), a guide column (14) is fixedly mounted on the top wall of the sealing cylinder (131), a spring (15) is wound around the guide column (14), an end rod (16) is slidably connected inside the sealing cylinder (131), a rectangular plug rod (161) is fixedly mounted on the bottom end of the end rod (16), a valve core (2) is provided at the end of the end rod (16), a rectangular sleeve (20) is fixedly mounted at the center position of the top surface of the valve core (2), the rectangular sleeve (20) is sleeved on the rectangular plug rod (161) and is fixedly connected to the rectangular plug rod (161), and the outer diameters of the end rod (16) and the rectangular plug rod (161) decrease successively.
2. The easy-to-maintain check valve connection structure according to claim 1, characterized in that: Two joints (10) for pipeline connection are fixedly mounted on the valve body (1), and the joints (10) are flange-connected to external pipelines.
3. The easy-to-maintain check valve connection structure according to claim 2, characterized in that: An annular groove (11) is provided on the end surface of the joint (10), and a sealing ring (12) is snap-fitted in the annular groove (11).
4. The easy-to-maintain check valve connection structure according to claim 1, characterized in that: One end of the spring (15) is fixedly mounted on the top wall of the sealing cylinder (131), and the other end of the spring (15) is fixedly mounted on the top surface of the end rod (16).
5. The easy-to-maintain check valve connection structure according to claim 1, characterized in that: The rectangular sleeve (20) is provided with a rectangular hole (21) whose top is connected to the outside, and the rectangular insertion rod (161) is plug-fitted into the rectangular hole (21).
6. The easy-to-maintain check valve connection structure according to claim 5, characterized in that: The size of the rectangular plug rod (161) is matched with the size of the rectangular hole (21) for stable plug-in matching operation.
7. The easy-to-maintain check valve connection structure according to claim 1, characterized in that: An outer fixing ring (22) and an inner fixing ring (23) are fixedly mounted on the top surface and the bottom surface of the valve core (2); the inner fixing ring (23) is located at the center of the outer fixing ring (22); and a sealing ring (24) is provided between the outer fixing ring (22) and the inner fixing ring (23).
8. The easy-to-maintain check valve connection structure according to claim 7, characterized in that: The surface of the sealing ring (24) protrudes from the surfaces of the outer fixing ring (22) and the inner fixing ring (23), and the sealing ring (24) is used to abut against the inside of the valve body (1) to perform a sealing operation.