Guide device for one-way valve of hydraulic coupler

Abstract

The invention relates to the field of valves, in particular to a hydraulic coupler one-way valve guide device which comprises a valve body and a valve deck installed at the upper end of the valve body, a guide valve rod is slidably installed in the middle of the upper end of the valve deck in a penetrating mode and extends into the valve body, and a valve element is coaxially embedded in the lower end of the guide valve rod. A pressing piece is arranged between the guide valve rod and the valve deck, a spring top seat is installed at the upper end of the middle of the valve deck in an attached mode, a reverse pushing spring is fixedly installed at the upper end of the spring top seat, the guide valve rod penetrates through the interior of the reverse pushing spring, and a reverse pushing cap is fixedly installed at the upper end of the reverse pushing spring. The spring top seat and the reverse thrust cap are both installed on the outer surface of the guide valve rod in a sliding mode, and a protruding cap is screwed on the upper end portion of the guide valve rod. The service life of the one-way valve is prolonged, meanwhile, the one-way valve can adapt to different hydraulic forces, and the use requirement is effectively met.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a hydraulic coupler one-way valve guide device. Background Art

[0002] The main function of the hydraulic coupling check valve is to control the one-way flow of liquid to ensure the normal operation of the hydraulic coupling. It can prevent the liquid from flowing back in the hydraulic coupling, thereby protecting the transmission parts of the hydraulic coupling from damage. The check valve guide device can ensure the stability and reliability of the check valve during operation. It can prevent the valve core from shaking or tilting under the action of liquid pressure, thereby avoiding the check valve from getting stuck or leaking.

[0003] However, during operation, when the valve core is pushed back to the closed position by the elastic force of the spring, the one-way valve guide device collides with the valve body. The sealing surface is easily deformed and damaged after long-term use, which seriously affects the service life of the one-way valve. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a hydraulic coupling one-way valve guide device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a hydraulic coupling one-way valve guide device, comprising a valve body and a valve cover installed on the upper end of the valve body, the middle part of the upper end of the valve cover passes through a slidably installed guide valve stem, the guide valve stem extends into the interior of the valve body, the lower end of the guide valve stem is coaxially inlaid with a valve core, a clamping member is provided between the guide valve stem and the valve cover, a spring top seat is fitted on the upper end of the middle part of the valve cover, a reverse thrust spring is fixedly installed on the upper end of the spring top seat, the guide valve stem passes through the interior of the reverse thrust spring, a reverse thrust cap is fixedly installed on the upper end of the reverse thrust spring, the spring top seat and the reverse thrust cap are both slidably installed on the outer surface of the guide valve stem, a convex cap is screwed on the upper end of the guide valve stem, the convex cap is fitted on the upper end of the reverse thrust cap, and an adjusting member is provided between the spring top seat and the valve cover.

[0006] Preferably, the clamping part includes a core push cap coaxially embedded in the outer surface of the guide valve stem, the lower end of the valve cover is fitted with a spring pressure seat, the lower end of the spring pressure seat is fitted with a spring body, the lower end of the spring body is fixed to the upper end of the core push cap, and the guide valve stem passes through the interior of the spring body and the interior of the spring pressure seat.

[0007] Preferably, a sealing ring is provided below the core push cap, the sealing ring is fixed to the inner wall of the valve body, the sealing ring is slidably mounted on the outer surface of the guide valve stem, both sides of the spring pressure seat are connected with adjusting rods, the adjusting rod passes through the upper end of the valve cover, the adjusting rod and the valve cover are slidably matched, a threaded rod is installed at the front part of the upper end of the valve cover, a threaded sleeve is screwed on the outer surface of the threaded rod, and the threaded sleeve is connected to the adjusting rod.

[0008] Preferably, the lower end of the adjusting rod is inlaid with a seat ear, the end of the seat ear is fixed to the spring pressure seat, the upper end of the adjusting rod is coaxially inlaid with a fixing sleeve, the front end of the fixing sleeve is fixedly installed with a connecting frame, the end of the connecting frame is fixed to the threaded sleeve, the lower end of the threaded rod is rotatably installed with a rod seat, the lower end of the rod seat is fixed to the valve cover, and the upper end of the threaded rod is coaxially fixed with a hand wheel.

[0009] Preferably, a plurality of bolts are provided in an annular array through the upper edge of the valve body and the upper edge of the valve cover, and nuts are screwed onto the ends of the bolts.

[0010] Preferably, the adjusting member includes adjusting seats fixedly mounted on both sides of the spring top seat, a threaded column is rotatably mounted on the rear end of the middle part of the valve cover, a threaded ring is screwed on the outer surface of the threaded column, a pushing frame is fixedly mounted on both sides of the threaded ring, the end of the pushing frame is connected to a pushing seat frame, and the end of the pushing seat frame is connected to the adjusting seat.

[0011] Preferably, a guide rod is slidably installed through the middle of the adjustment seat, the lower end of the guide rod is fixed to the valve cover, the upper end of the guide rod is coaxially inlaid with a positioning cap, and sliding ears extend on both sides of the reverse thrust cap, and the sliding ears are slidably installed on the outer surface of the guide rod.

[0012] Preferably, the front end of the push seat frame passes through and is rotatably installed with a No. 1 connecting shaft, the end of the No. 1 connecting shaft passes through and is embedded in the end of the adjusting seat, the rear end of the push seat frame passes through and is rotatably installed with a No. 2 connecting shaft, the end of the No. 2 connecting shaft is embedded with a groove seat, the rear end of the groove seat is fixed to the push frame, guide sleeves are provided on both sides of the threaded column, the front end of the guide sleeve is fixed to the valve cover, a guide column is slidably installed inside the guide sleeve, the guide column passes through the rear end of the guide sleeve, and the end of the guide column is fixed to the push frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. When the spring body pushes the core push cap to move, causing the valve core on the guide valve stem to move downward and reset, when the valve core is about to contact the valve body, the convex cap on the top of the guide valve stem will collide with the reverse thrust cap supported by the reverse thrust spring, thereby applying a certain reverse thrust to the guide valve stem, and then applying a certain reverse thrust to the valve core that is about to contact the valve body, so as to slow down the movement trend of the valve core, thereby reducing the impact force of the valve core with the valve body when resetting, so as to avoid deformation and damage of the lower sealing surface due to long-term use, thereby extending the service life of the one-way valve.

[0014] 2. By rotating the threaded rod, the threaded sleeve can be driven downward, and then the adjusting rod can be driven to slide downward on the valve cover to push the spring pressure seat, so that the spring pressure seat can be used to press the spring body to shorten the spring body, so as to change the elastic force of the spring body, so as to adapt to different hydraulic forces, so as to avoid the phenomenon that the valve core cannot be opened normally due to the mismatch between the elastic force of the spring body and the hydraulic force. At the same time, by rotating the threaded column, the threaded ring can be driven to move to push the push seat frame so that the push seat frame can move, so as to lift the spring top seat to press the reverse thrust spring, shorten the reverse thrust spring, and change the reverse thrust force of the reverse thrust spring, so as to adapt to the change of the elastic force of the spring body, thereby ensuring the normal reverse thrust operation of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a hydraulic coupling one-way valve guide device of the present invention; Figure 2 It is a schematic diagram of another viewing angle of a hydraulic coupling one-way valve guide device of the present invention; Figure 3 It is an internal view of a valve body of a one-way valve guide device of a hydraulic coupling of the present invention; Figure 4 A hydraulic coupling one-way valve guide device according to the present invention Figure 2 A magnified view of middle; Figure 5 It is a schematic diagram of a reverse thrust spring of a one-way valve guide device of a hydraulic coupling of the present invention; Figure 6 A hydraulic coupling one-way valve guide device according to the present invention Figure 5 Enlarged view of B.

[0016] In the figure: 1. valve body; 2. valve cover; 3. adjusting rod; 4. threaded rod; 5. reverse thrust spring; 6. convex cap; 7. threaded sleeve; 8. hand wheel; 9. connecting frame; 10. fixing sleeve; 11. rod seat; 12. nut; 13. bolt; 14. threaded column; 15. threaded ring; 16. pushing frame; 17. reverse thrust cap; 18. guide valve stem; 19. positioning cap; 20. sliding ear; 21. guide rod; 22. adjusting seat; 23. No. 1 connecting shaft; 24. push seat frame; 25. No. 2 connecting shaft; 26. groove seat; 27. guide sleeve; 28. guide column; 29. ​​spring top seat; 30. spring body; 31. valve core; 32. sealing ring; 33. core push cap; 34. spring pressure seat; 35. seat ear. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] like Figure 1-Figure 6 A hydraulic coupling one-way valve guide device shown in the figure comprises a valve body 1 and a valve cover 2 installed on the upper end of the valve body 1, the valve cover 2 plays a sealing role, a guide valve stem 18 is slidably installed through the middle of the upper end of the valve cover 2, the guide valve stem 18 extends into the interior of the valve body 1, the guide valve stem 18 plays a role in guiding the valve core 31, the lower end of the guide valve stem 18 is coaxially inlaid with the valve core 31, the valve core 31 plays an opening and closing role, a pressing piece is arranged between the guide valve stem 18 and the valve cover 2, a spring top seat 29 is fitted on the upper end of the middle part of the valve cover 2, a reverse thrust spring 5 is fixedly installed on the upper end of the spring top seat 29, the guide valve stem 18 runs through the interior of the reverse thrust spring 5, the spring top seat 29 plays a role in bearing the reverse thrust spring 5, a reverse thrust cap 17 is fixedly installed on the upper end of the reverse thrust spring 5, the reverse thrust spring 5 plays a role in reverse pushing the valve core 31 The spring top seat 29 and the reverse thrust cap 17 are both slidably mounted on the outer surface of the guide valve stem 18. The upper end of the guide valve stem 18 is tightened with a convex cap 6. The reverse thrust cap 17 increases the contact surface between the reverse thrust spring 5 and the convex cap 6. The convex cap 6 fits the upper end of the reverse thrust cap 17. An adjusting member is arranged between the spring top seat 29 and the valve cover 2. When the valve core 31 moves to the position about to contact the valve body 1, the convex cap 6 at the top of the guide valve stem 18 will collide with the reverse thrust cap 17 supported by the reverse thrust spring 5, so as to apply a certain reverse thrust to the guide valve stem 18, and then apply a certain reverse thrust to the valve core 31 about to contact the valve body 1, so as to slow down the movement trend of the valve core 31, thereby reducing the impact force of the valve core 31 with the valve body 1 when resetting. After the reverse thrust is completed, the spring body 30 presses the valve core 31 tightly into the valve body 1, so that the valve body 1 can be closed.

[0019] The pressing member includes a core push cap 33 coaxially embedded on the outer surface of the guiding valve stem 18. A spring seat 34 is fitted and installed at the lower end of the valve cover 2. A spring body 30 is fitted and installed at the lower end of the spring seat 34. The spring seat 34 serves to carry the spring body 30. The lower end of the spring body 30 is fixed to the upper end of the core push cap 33. The core push cap 33 serves to be pushed by the spring body 30. The guiding valve stem 18 passes through the interior of the spring body 30 and the interior of the spring seat 34.

[0020] A sealing ring 32 is arranged below the core push cap 33. The sealing ring 32 is fixed to the inner wall of the valve body 1. The sealing ring 32 is slidably installed on the outer surface of the guiding valve stem 18. The sealing ring 32 serves for sealing and strengthening the guiding of the guiding valve stem 18. Adjusting rods 3 are connected to both sides of the spring seat 34. The adjusting rods 3 penetrate out from the upper end of the valve cover 2. The adjusting rods 3 serve to press the spring seat 34. The adjusting rods 3 are slidably mated with the valve cover 2. A threaded rod 4 is installed at the front part of the upper end of the valve cover 2. A threaded sleeve 7 is screwed on the outer surface of the threaded rod 4. The threaded rod 4 and the threaded sleeve 7 serve to drive the adjusting rods 3 to move. The threaded sleeve 7 is connected to the adjusting rods 3.

[0021] A seat ear 35 is embedded at the lower end of the adjusting rod 3. The end of the seat ear 35 is fixed to the spring seat 34. The seat ear 35 serves to fix the adjusting rod 3 and the spring seat 34 together. A fixing sleeve 10 is coaxially embedded at the upper end of the adjusting rod 3. A connecting frame 9 is fixedly installed at the front end of the fixing sleeve 10. The end of the connecting frame 9 is fixed to the threaded sleeve 7. Both the fixing sleeve 10 and the connecting frame 9 serve for connection. A rod seat 11 is rotatably installed at the lower end of the threaded rod 4. The lower end of the rod seat 11 is fixed to the valve cover 2. The rod seat 11 serves to carry the threaded rod 4. A hand wheel 8 is coaxially and fixedly installed at the upper end of the threaded rod 4. The hand wheel 8 serves to facilitate the rotation of the threaded rod 4.

[0022] A plurality of bolts 13 are annularly and penetratingly arranged at the upper edge of the valve body 1 and the upper edge of the valve cover 2. Nuts 12 are screwed at the ends of the bolts 13. The bolts 13 and the nuts 12 serve to lock the valve body 1 and the valve cover 2 together.

[0023] The adjusting member includes adjusting seats 22 fixedly installed on both sides of the spring top seat 29. A threaded column 14 is rotatably installed at the rear part of the middle of the valve cover 2. The adjusting seats 22 serve to drive the spring top seat 29 to move. A threaded ring 15 is screwed on the outer surface of the threaded column 14. Pushing frames 16 are fixedly installed on both sides of the threaded ring 15. The threaded column 14 and the threaded ring 15 serve to drive the pushing frames 16 to move. The end of the pushing frame 16 is connected to a push seat frame 24. The pushing frame 16 can push the push seat frame 24 to move the adjusting seats 22. The end of the push seat frame 24 is connected to the adjusting seats 22.

[0024] A guide rod 21 is slidably installed through the middle of the adjustment seat 22, and the lower end of the guide rod 21 is fixed to the valve cover 2. The guide rod 21 guides the adjustment seat 22. A positioning cap 19 is coaxially inlaid on the upper end of the guide rod 21. The positioning cap 19 limits the upward movement height of the reverse thrust cap 17. Sliding ears 20 extend from both sides of the reverse thrust cap 17. The sliding ears 20 are slidably installed on the outer surface of the guide rod 21. The sliding ears 20 and the guide rod 21 cooperate to guide the reverse thrust cap 17.

[0025] The front end of the push seat frame 24 is penetrated and rotatably installed with a No. 1 connecting shaft 23, and the end of the No. 1 connecting shaft 23 is penetrated and embedded in the end of the adjusting seat 22. The No. 1 connecting shaft 23 serves to facilitate the connection of the push seat frame 24. The rear end of the push seat frame 24 is penetrated and rotatably installed with a No. 2 connecting shaft 25. The No. 2 connecting shaft 25 serves to facilitate the connection of the push seat frame 24. The end of the No. 2 connecting shaft 25 is embedded with a groove seat 26, and the rear end of the groove seat 26 is fixed to the push frame 16. The groove seat 26 serves to support the No. 2 connecting shaft 25. Guide sleeves 27 are provided on both sides of the threaded column 14. The front end of the guide sleeve 27 is fixed to the valve cover 2, and a guide column 28 is slidably installed inside the guide sleeve 27. The guide sleeve 27 and the guide column 28 serve to guide the push frame 16. The guide column 28 passes through the rear end of the guide sleeve 27, and the end of the guide column 28 is fixed to the push frame 16.

[0026] When in use, the threaded rod 4 can be rotated according to the force of the hydraulic pressure to drive the threaded sleeve 7 to move downward, thereby driving the adjusting rod 3 to slide downward on the valve cover 2 to push the spring pressure seat 34, so that the spring pressure seat 34 can be used to press the spring body 30 to shorten the spring body 30 to change the elasticity of the spring body 30 to adapt to the force of the hydraulic pressure, and then the threaded column 14 is rotated to drive the threaded ring 15 to move and push the push seat frame 24 so that the push seat frame 24 can move to lift the spring top seat 29 to press the reverse thrust spring 5 to shorten the reverse thrust spring 5 to change the reverse thrust force of the reverse thrust spring 5 to adapt to the change in the elasticity of the spring body 30. When liquid enters the interior of the valve body 1, the valve core 31 is affected The spring body 30 contracts and deforms to open the valve core 31, allowing the liquid to flow normally in the valve body 1. When the outlet liquid pressure decreases, the spring body 30 pushes the valve core 31 to reset the valve core 31 to the closed position. During this process, when the valve core 31 moves to the position about to contact the valve body 1, the convex cap 6 on the top of the guide valve stem 18 collides with the reverse thrust cap 17 supported by the reverse thrust spring 5, so as to apply a certain reverse thrust to the guide valve stem 18, and then apply a certain reverse thrust to the valve core 31 about to contact the valve body 1, so as to slow down the movement trend of the valve core 31, thereby reducing the impact force of the valve core 31 with the valve body 1 when resetting, so as to avoid deformation and damage of the sealing surface under long-term use.

[0027] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic coupling one-way valve guide device, comprising a valve body (1) and a valve cover (2) mounted on the upper end of the valve body (1), wherein a guide valve stem (18) is slidably mounted through the middle of the upper end of the valve cover (2), the guide valve stem (18) extends into the interior of the valve body (1), and a valve core (31) is coaxially embedded in the lower end of the guide valve stem (18), characterized in that: A clamping member is provided between the guide valve stem (18) and the valve cover (2); a spring top seat (29) is fitted on the middle upper end of the valve cover (2); a reverse thrust spring (5) is fixedly installed on the upper end of the spring top seat (29); the guide valve stem (18) passes through the interior of the reverse thrust spring (5); a reverse thrust cap (17) is fixedly installed on the upper end of the reverse thrust spring (5); the spring top seat (29) and the reverse thrust cap (17) are both slidably mounted on the outer surface of the guide valve stem (18); a convex cap (6) is screwed on the upper end of the guide valve stem (18); the convex cap (6) is fitted on the upper end of the reverse thrust cap (17); and an adjusting member is provided between the spring top seat (29) and the valve cover (2).

2. A hydraulic coupling one-way valve guide device according to claim 1, characterized in that: The clamping member comprises a core push cap (33) coaxially embedded in the outer surface of the guide valve stem (18); a spring pressure seat (34) is fitted on the lower end of the valve cover (2); a spring body (30) is fitted on the lower end of the spring pressure seat (34); the lower end of the spring body (30) is fixed to the upper end of the core push cap (33); and the guide valve stem (18) passes through the interior of the spring body (30) and the interior of the spring pressure seat (34).

3. A hydraulic coupling one-way valve guide device according to claim 2, characterized in that: A sealing ring (32) is provided below the core push cap (33), the sealing ring (32) being fixed to the inner wall of the valve body (1), the sealing ring (32) being slidably mounted on the outer surface of the guide valve stem (18), both sides of the spring pressure seat (34) being connected with adjusting rods (3), the adjusting rods (3) extending through the upper end of the valve cover (2), the adjusting rods (3) being slidably matched with the valve cover (2), a threaded rod (4) being mounted on the front portion of the upper end of the valve cover (2), a threaded sleeve (7) being screwed onto the outer surface of the threaded rod (4), the threaded sleeve (7) being connected to the adjusting rod (3).

4. A hydraulic coupling one-way valve guide device according to claim 3, characterized in that: The lower end of the adjusting rod (3) is inlaid with a seat ear (35), the end of the seat ear (35) is fixed to the spring pressure seat (34), the upper end of the adjusting rod (3) is coaxially inlaid with a fixing sleeve (10), the front end of the fixing sleeve (10) is fixedly mounted with a connecting frame (9), the end of the connecting frame (9) is fixed to the threaded sleeve (7), the lower end of the threaded rod (4) is rotatably mounted with a rod seat (11), the lower end of the rod seat (11) is fixed to the valve cover (2), and the upper end of the threaded rod (4) is coaxially fixedly mounted with a hand wheel (8).

5. The hydraulic coupling one-way valve guide device according to claim 1, characterized in that: A plurality of bolts (13) are provided in an annular array through the upper edge of the valve body (1) and the upper edge of the valve cover (2), and nuts (12) are screwed onto the ends of the bolts (13).

6. A hydraulic coupling one-way valve guide device according to claim 1, characterized in that: The adjusting member comprises an adjusting seat (22) fixedly mounted on both sides of a spring top seat (29); a threaded column (14) is rotatably mounted on the rear end of the middle portion of the valve cover (2); a threaded ring (15) is screwed onto the outer surface of the threaded column (14); a push frame (16) is fixedly mounted on both sides of the threaded ring (15); an end of the push frame (16) is connected to a push frame (24); and an end of the push frame (24) is connected to the adjusting seat (22).

7. A hydraulic coupling one-way valve guide device according to claim 6, characterized in that: A guide rod (21) is slidably mounted through the middle of the adjustment seat (22); the lower end of the guide rod (21) is fixed to the valve cover (2); a positioning cap (19) is coaxially inlaid on the upper end of the guide rod (21); sliding ears (20) extend from both sides of the reverse thrust cap (17); and the sliding ears (20) are slidably mounted on the outer surface of the guide rod (21).

8. A hydraulic coupling one-way valve guide device according to claim 7, characterized in that: The front end of the push seat frame (24) passes through and is rotatably mounted with a No. 1 connecting shaft (23), the end of the No. 1 connecting shaft (23) passes through and is embedded in the end of the adjustment seat (22), the rear end of the push seat frame (24) passes through and is rotatably mounted with a No. 2 connecting shaft (25), the end of the No. 2 connecting shaft (25) is embedded with a groove seat (26), the rear end of the groove seat (26) is fixed to the push frame (16), guide sleeves (27) are provided on both sides of the threaded column (14), the front end of the guide sleeve (27) is fixed to the valve cover (2), a guide column (28) is slidably mounted inside the guide sleeve (27), the guide column (28) passes through the rear end of the guide sleeve (27), and the end of the guide column (28) is fixed to the push frame (16).

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