Novel tubular one-way valve with high sealing performance
By introducing a sealing connection device and a return blocking device into the pipe type check valve, the oil leakage and return problems caused by the gap at the connection are solved, and the high-sealed one-way flow effect is achieved, which improves the sealing of the valve body and Efficiency of use.
Patent Information
- Application Number
- CN202420537795.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-19
AI Technical Summary
Existing tubular check valves are prone to gaps at the connection, which leads to oil leakage and insufficient sealing in the valve body, resulting in oil reflux.
A new high-seal type tubular check valve is designed, using sealed connection device and return blocking device, including components such as flow sleeve, spring limit plate, rubber ring, sealed piston and threaded sleeve, and sealed piston by sealing the piston. The combination with the spring enables the sealing connection between the oil inlet end and the oil injection port to avoid gaps and oil leakage; the return blocking device further improves the sealing effect through the connection between the threaded sleeve and the rubber ring.
It effectively avoids oil reflux and leakage, improves the sealing in the valve body, ensures oil flows in one direction, and reduces installation risk and installation complexity.
Smart Images
Figure CN222185896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tubular one-way valves, and more specifically, to a novel tubular one-way valve with high sealing performance. Background Art
[0002] In the fields of chemical industry, pharmaceutical industry, etc., the use of one-way valves can be seen everywhere. One-way valves are devices that allow fluid to flow only along the inlet, but the outlet medium cannot flow back. The working principle of the spring-loaded one-way valve is that the liquid flows into the valve body from the inlet, and the valve disc controlled by the spring is lifted by the pressure. When the pressure disappears, the spring force presses the valve disc down to block the backflow of the liquid.
[0003] After searching, for example, a Chinese patent application with application number CN215635160U discloses a new type of tubular one-way valve, which uses an expansion interface to replace the end connection joint in the traditional one-way valve, and directly gives the function of expanding the flow channel diameter to the one-way valve. It is easy to operate and does not need to install too many joints. At the same time, a flange structure is used to fix the connection spring, and the flange structure is used as a limit mechanism to limit the movement of the valve core. It is directly squeezed and fixed with the end of the lower transition joint. The structure is simple, which reduces the number of parts, requires a small installation space, and is easy to install and operate. It improves efficiency and reduces costs, and avoids the risk of reverse installation.
[0004] However, the above technical solution uses an extended interface for docking during use, but there will be a gap between the dockings, which will cause oil to leak out easily, and the valve core in the valve body is not sealed enough, which will easily cause oil to flow back.
[0005] Moreover, the existing tubular one-way valve is prone to produce a gap with the hydraulic nozzle during installation, which causes oil leakage, and the piston in the valve body is not sealed enough, causing oil reflux. In order to solve the above problems and defects, it is necessary to propose a new type of highly sealed tubular one-way valve. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a new type of highly sealed tubular one-way valve. The technical problem to be solved by the present invention is to prevent oil leakage caused by gaps at the connection and to prevent oil backflow in the valve body.
[0007] To achieve the above purpose, the utility model provides the following technical solutions: a new type of highly sealed tubular one-way valve, comprising a valve body:
[0008] An oil inlet end is fixedly provided at one end of the valve body, an oil injection port is movably provided at one side of the oil inlet end, and an oil outlet end is fixedly provided at the other end of the valve body;
[0009] The inner side of the valve body is provided with a sealing connection device that can block the flowing oil, and is used to quickly close the port at the oil inlet end and the port at the oil outlet end to prevent the oil from flowing back;
[0010] The oil inlet end and the oil injection port are sealed and connected via a reflux blocking device, which is used to seal the oil inlet end and the oil injection port to avoid oil leakage due to excessive gap;
[0011] An oblique groove is provided at one end of the inner wall of the oil inlet end;
[0012] The sealing connection device includes a fluid sleeve, which is movably arranged on the inner side of the valve body and the oil outlet end. A spring limit plate is fixedly arranged on the outer surface of the fluid sleeve, and a spring is movably arranged on one side of the spring limit plate. The spring is located on the outer surface of the fluid sleeve.
[0013] In a preferred embodiment, a rubber ring is fixedly provided on the outer surface of the spring limiting plate, and the outer surface of the rubber ring is in contact with the inner wall of the valve body.
[0014] In a preferred embodiment, a sealing piston is fixedly provided at one end of the spring limiting plate, the cross section of the sealing piston is a convex shape, and the sealing piston is adapted to the bevel groove and can be inserted into the interior of the bevel groove.
[0015] In a preferred embodiment, a plurality of fluid flow grooves are formed on the outer surface of the fluid flow sleeve, and the fluid flow grooves are located between the sealing piston and the spring limiting plate.
[0016] In a preferred embodiment, the backflow blocking device comprises a threaded sleeve, the threaded sleeve is movably arranged on the outer surface of the oil inlet end, and the threaded sleeve is sleeved outside one end of the oil inlet end.
[0017] In a preferred embodiment, a limiting ring is fixedly provided on the outer surface of one end of the oil inlet end, and a rubber ring is fixedly provided on one end of the oil inlet end.
[0018] In a preferred embodiment, a connection groove is formed at one end of the oil injection port, the rubber ring matches the connection groove in size, and the outer surface of the oil injection port is threadedly connected to the inner wall of the threaded sleeve.
[0019] Technical effects and advantages of the utility model:
[0020] 1. The utility model is provided with a sealing connection device, which is conducive to the rapid closure of the port and avoids oil reflux. The sealing piston, the spring limit plate and the rubber ring are pushed up by the spring, so that when the oil pressure at the oil inlet end is high, the sealing piston can be pushed up to achieve oil injection. Due to the sealing effect of the rubber ring, the oil can flow in the flow groove and flow out from one end of the flow sleeve, thereby avoiding the problem of oil reflux caused by the decrease of spring elastic force due to the oil pressure on one side being applied to the spring;
[0021] 2. The utility model is provided with a reflux blocking device, which is conducive to sealing the oil inlet end and the oil injection port to avoid oil leakage caused by excessive gap. The threaded sleeve can be limited to the outer surface of the oil inlet end through the oil inlet end and the limit ring. When the oil injection port needs to be connected, the threaded sleeve is threadedly connected to the outer surface of the oil injection port, so that the rubber ring is inserted into the connecting groove and squeezed to improve the sealing effect, thereby avoiding the problem of oil leakage at the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0023] Figure 2 It is a side sectional view of the integral valve body of the utility model.
[0024] Figure 3 This is a schematic structural diagram of the sealing connection device of the utility model.
[0025] Figure 4 It is a schematic structural diagram of the backflow blocking device of the utility model.
[0026] The accompanying drawings are marked as follows: 1. valve body; 2. sealing connection device; 3. backflow blocking device; 4. oil injection port; 5. oil inlet end; 6. oil outlet end; 7. bevel groove; 21. liquid flow sleeve; 22. spring limit plate; 23. spring; 24. rubber ring; 25. liquid flow groove; 26. sealing piston; 31. threaded sleeve; 32. limit ring; 33. rubber ring; 34. connecting groove. DETAILED DESCRIPTION
[0027] 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 them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field of tubular one-way valves without creative work are within the scope of protection of the utility model.
[0028] like Figure 1 and 2 As shown, the utility model provides a novel highly sealed tubular one-way valve, comprising a valve body 1: an oil inlet end 5 is fixedly provided at one end of the valve body 1, an oil injection port 4 is movably provided at one side of the oil inlet end 5, and an oil outlet end 6 is fixedly provided at the other end of the valve body 1; an oblique groove 7 is opened at one end of the inner wall of the oil inlet end 5.
[0029] In order to block the flow of oil, a sealing connection device 2 that can block the flow of oil is provided inside the valve body 1, which is used to quickly close the port of the oil inlet end 5 and the port of the oil outlet end 6 to prevent the oil from flowing back;
[0030] like Figure 3 As shown, the sealing connection device 2 includes a fluid sleeve 21, which is movably arranged on the inner side of the valve body 1 and the oil outlet end 6. A spring stop plate 22 is fixedly arranged on the outer surface of the fluid sleeve 21. A spring 23 is movably arranged on one side of the spring stop plate 22. The spring 23 is located on the outer surface of the fluid sleeve 21. A rubber ring 24 is fixedly arranged on the outer surface of the spring stop plate 22. The outer surface of the rubber ring 24 is in contact with the inner wall of the valve body 1. A sealing piston 26 is fixedly arranged at one end of the spring stop plate 22. The cross section of the sealing piston 26 is a convex shape. The sealing piston 26 is adapted to the bevel groove 7 and can be inserted into the sealing piston 26. Inside the bevel groove 7, a plurality of liquid flow grooves 25 are provided on the outer surface of the liquid flow sleeve 21. The liquid flow grooves 25 are located between the sealing piston 26 and the spring limit plate 22. The sealing piston 26, the spring limit plate 22 and the rubber ring 24 are supported by the spring 23. Therefore, when the oil pressure at the oil inlet end 5 is high, the sealing piston 26 can be pushed to realize oil injection. Due to the sealing effect of the rubber ring 24, the oil can flow in the liquid flow grooves 25 and flow out from one end of the liquid flow sleeve 21, thereby avoiding the problem of oil reflux caused by the oil pressure on one side being applied to the spring 23, resulting in a decrease in the elastic force of the spring 23.
[0031] Furthermore, in order to avoid oil leakage caused by too large a gap between the oil inlet end 5 and the oil injection port 4, the oil inlet end 5 and the oil injection port 4 are sealed and connected by a reflux blocking device 3, which is used to seal the oil inlet end 5 and the oil injection port 4 to avoid oil leakage caused by too large a gap;
[0032] like Figure 4 As shown, the reflux blocking device 3 includes a threaded sleeve 31, which is movably arranged on the outer surface of the oil inlet end 5, and the threaded sleeve 31 is sleeved on the outside of one end of the oil inlet end 5. A limiting ring 32 is fixedly provided on the outer surface of one end of the oil inlet end 5, and a rubber ring 33 is fixedly provided on one end of the oil inlet end 5. A connecting groove 34 is opened at one end of the oil injection port 4, and the rubber ring 33 matches the connecting groove 34 in size. The outer surface of the oil injection port 4 is threadedly connected with the inner wall of the threaded sleeve 31. The threaded sleeve 31 can be limited to the outer surface of the oil inlet end 5 through the oil inlet end 5 and the limiting ring 32. When it is necessary to connect the oil injection port 4, the threaded sleeve 31 is threadedly connected to the outer surface of the oil injection port 4, so that the rubber ring 33 is inserted into the connecting groove 34 for extrusion to improve the sealing effect, thereby avoiding the problem of oil leakage at the connection.
[0033] The working principle is as follows: In the utility model, the oil injection port 4 and the oil inlet end 5 are sealed and connected through the sealing connection device 2. The oil injection port 4 sprays oil and flows into the oil inlet end 5. When the oil pressure is too high, the sealing piston 26 will be pushed to move, so that the oil can flow into the liquid flow groove 25, and flow out from one end of the liquid flow sleeve 21 into the oil outlet end 6, thereby achieving a one-way outflow effect. When the oil pressure at the oil inlet end 5 is low, the sealing piston 26 will be pushed by the elastic force of the spring 23, thereby achieving the docking of the sealing piston 26 and the bevel groove 7 to achieve a sealing effect.
[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A novel high-sealing tubular one-way valve, comprising a valve body (1), characterized in that: An oil inlet end (5) is fixedly provided at one end of the valve body (1), an oil injection port (4) is movably provided at one side of the oil inlet end (5), and an oil outlet end (6) is fixedly provided at the other end of the valve body (1); The valve body (1) is provided with a sealing connection device (2) on the inner side thereof, which can block the flow of oil and is used to quickly close the port at the oil inlet end (5) and the port at the oil outlet end (6) to prevent oil from flowing back. The oil inlet end (5) and the oil injection port (4) are sealed and connected via a backflow blocking device (3), which is used to seal the oil inlet end (5) and the oil injection port (4) to avoid oil leakage caused by excessive gap; An oblique groove (7) is formed at one end of the inner wall of the oil inlet end (5); The sealing connection device (2) comprises a fluid sleeve (21), the fluid sleeve (21) being movably arranged on the inner side of the valve body (1) and the oil outlet end (6), a spring stop plate (22) being fixedly arranged on the outer surface of the fluid sleeve (21), a spring (23) being movably arranged on one side of the spring stop plate (22), and the spring (23) being located on the outer surface of the fluid sleeve (21).
2. A new type of highly sealed tubular one-way valve according to claim 1, characterized in that: A rubber ring (24) is fixedly provided on the outer surface of the spring limiting plate (22), and the outer surface of the rubber ring (24) is in contact with the inner wall of the valve body (1).
3. A new type of highly sealed tubular one-way valve according to claim 1, characterized in that: A sealing piston (26) is fixedly provided at one end of the spring stop plate (22); the sealing piston (26) has a convex cross-section, and the sealing piston (26) is adapted to the bevel groove (7) and can be inserted into the interior of the bevel groove (7).
4. A new type of highly sealed tubular one-way valve according to claim 3, characterized in that: The outer surface of the fluid flow sleeve (21) is provided with a plurality of fluid flow grooves (25), and the fluid flow grooves (25) are located between the sealing piston (26) and the spring limiting plate (22).
5. A new type of highly sealed tubular one-way valve according to claim 1, characterized in that: The backflow blocking device (3) comprises a threaded sleeve (31), the threaded sleeve (31) being movably arranged on the outer surface of the oil inlet end (5), and the threaded sleeve (31) being sleeved on the outside of one end of the oil inlet end (5).
6. A new type of highly sealed tubular one-way valve according to claim 1, characterized in that: A limiting ring (32) is fixedly provided on the outer surface of one end of the oil inlet end (5), and a rubber ring (33) is fixedly provided on one end of the oil inlet end (5).
7. A new type of highly sealed tubular one-way valve according to claim 6, characterized in that: A connecting groove (34) is formed at one end of the oil injection port (4), the rubber ring (33) and the connecting groove (34) are matched in size, and the outer surface of the oil injection port (4) is threadedly connected to the inner wall of the threaded sleeve (31).
Citation Information
Cited By
Oil supply device for hydraulic station of single-cylinder cone crusher
CN120346861A