Hydraulic control one-way valve
By introducing an anti-shift locking component, the problem of loose connection between the end sleeve and the valve seat of the hydraulic control check valve is solved, achieving higher sealing performance and longer service life. Through the combination of the inner locking component and the outer snap ring, the mutual locking of the snap rings solves the relative movement between the end sleeve and the check valve, ensuring the stability and sealing of the connection.
Patent Information
- Application Number
- CN202520563960.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing hydraulic check valves are prone to loosening and slight displacement at the connection between the end sleeve and the check valve seat, resulting in poor sealing. Existing hydraulic single valves are also prone to loosening and slight displacement at the valve seat connection, leading to leakage, unstable sealing, and short service life.
An anti-shift locking assembly is adopted, including an inner locking member and an outer retaining spring. The mutual cooperation of the inner locking member and the outer retaining spring restricts the relative movement between the end sleeve and the one-way valve seat. The mutual locking of the inner locking member and the outer retaining spring restricts the relative movement between the end sleeve and the one-way valve seat, thus ensuring the sealing of the connection.
This improves the sealing performance of the hydraulic check valve, extends the product's service life, and ensures the stability and sealing of the connection.
Smart Images
Figure CN223740112U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of hydraulic control check valves. BACKGROUND
[0002] Hydraulic control check valve is used to control the flow direction of fluid (such as hydraulic oil) in pipeline. The working principle of hydraulic control check valve is to realize the one-way flow control of fluid by internal check valve spool assembly. The existing hydraulic control check valve is connected by thread between end sleeve joint and check valve seat, and its inside is prone to looseness and slight displacement at the connection between end sleeve joint and check valve seat due to the frequent reciprocating motion of check valve top rod, resulting in leakage, and the sealing performance cannot be guaranteed for a long time. The service life of the product is short, and improvement is needed. SUMMARY
[0003] To solve the above problems, the technical problem to be solved by the utility model is to provide a kind of hydraulic control check valve.
[0004] The utility model hydraulic control check valve adopts the technical scheme: including hydraulic control check valve body and the check valve spool assembly arranged in the hydraulic control check valve body, characterized in that the check valve spool assembly includes end sleeve joint, check valve seat, check valve sleeve, check valve top rod, check valve spool, top rod return spring, valve core return spring and anti-shift locking assembly, both ends of the check valve seat are connected with the end sleeve joint and the check valve sleeve, the anti-shift locking assembly includes inner locking piece and outer snap spring, the inner locking piece includes inner sleeve and turnover sleeve, the inner sleeve is provided with inner sleeve notch, the turnover sleeve is swingably fixed at both ends of the inner sleeve notch by pin, one end of the check valve seat is provided with valve seat outer positioning groove, and the inner sleeve is sleeved on the valve seat outer positioning groove;
[0005] The outer snap spring is provided with outer snap spring mouth and outer snap spring limiting protrusion, the end sleeve joint is provided with joint first docking groove for butt joint at one end of the end sleeve joint, the end sleeve joint is provided with joint outer sunken groove, the joint outer sunken groove is provided with joint locking port corresponding to the turnover sleeve, the outer snap spring is clamped at the joint outer sunken groove, and the outer snap spring limiting protrusion is inserted between the two turnover sleeves through the joint locking port.
[0006] One end of the end sleeve joint is sequentially provided with the valve seat outer positioning groove, valve seat outer thread and valve seat end stop portion for abutting against the end portion of the end sleeve joint from outside to inside, and the inner wall of the joint first docking groove is provided with joint inner thread threadedly connected with the valve seat outer thread.
[0007] The anti-shift locking assembly further includes protective pad, and the protective pad is provided with protective pad wrapping groove for placing the outer snap spring.
[0008] The end sleeve joint end is provided with, from outside to inside, a sealing ring positioning groove, the joint outer sunken groove and the joint outer thread for screwing with the inner cavity of the hydraulic control one-way valve body, and the sealing ring positioning groove is provided with a sealing ring combination.
[0009] The liquid control one-way valve has the advantages that the anti-movement locking assembly is introduced, the relative movement of the end sleeve joint and the one-way valve seat is limited through mutual locking of the inner locking member and the outer snap spring, the sealing performance of the connection between the end sleeve joint and the one-way valve seat is ensured, and the service life of the product is improved. BRIEF DESCRIPTION OF DRAWINGS
[0010] The utility model will be further explained in detail in combination with the drawings and specific embodiments.
[0011] Figure 1 is the half sectional view of the utility model liquid control one-way valve;
[0012] Figure 2 is the exploded view of the utility model anti-movement locking assembly;
[0013] Figure 3 is the structural schematic diagram of the utility model inner snap ring;
[0014] Figure 4 is the structural schematic diagram of the utility model one-way valve seat;
[0015] Figure 5 is the structural schematic diagram of the utility model outer snap spring;
[0016] Figure 6 is the structural schematic diagram of the utility model end sleeve joint;
[0017] Figure 7 is the structural schematic diagram of the utility model protective pad. SPECIFIC EMBODIMENTS
[0018] As Figures 1-7The utility model relates to a hydraulic control check valve, including hydraulic control check valve valve body 1 and be located in the check valve spool assembly of hydraulic control check valve valve body 1, the check valve spool assembly includes end sleeve joint 3, check valve seat 4, check valve valve sleeve 5, check valve top rod 6, check valve spool 7, top rod return spring 8, spool return spring 9 and anti -migration locking assembly 10, the both ends of check valve seat 4 are connected with end sleeve joint 3, check valve valve sleeve 5 respectively, anti -migration locking assembly 10 includes inner locking piece 14 and outer snap spring 15, the inner locking piece 14 includes inner collet 17 and overturning sleeve 18, the inner collet 17 is equipped with inner collet notch 20, overturning sleeve 18 is swingably fixed in the both ends of inner collet 17 at inner collet notch 20 through pin 19, check valve seat 4 one end is equipped with valve seat outer positioning groove 22, and inner collet 17 is set on valve seat outer positioning groove 22, the outer snap spring 15 is equipped with outer snap spring snap 27 and outer snap spring limiting protrusion 28, the end sleeve joint 3 is equipped with joint first docking groove 29 for the butt joint of one end of end sleeve joint 3, the end sleeve joint 3 end is equipped with joint outer subsidence groove 32, and the joint outer subsidence groove 32 is equipped with joint locking mouth 33 corresponding with overturning sleeve 18, and outer snap spring 15 is clamped at joint outer subsidence groove 32, and outer snap spring limiting protrusion 28 is inserted between two overturning sleeves 18 through joint locking mouth 33, after the threaded connection of end sleeve joint 3 and check valve seat 4, overturning sleeve 18 is swung open at joint locking mouth 33, then the outer snap spring limiting protrusion 28 of outer snap spring 15 is clamped between two overturning sleeves 18 to realize the locking of end sleeve joint 3 and check valve seat 4 in hydraulic control check valve valve body 1, the relative movement of end sleeve joint and check valve seat is limited through inner locking piece 14 and outer snap spring 15, guarantees the sealing performance of end sleeve joint and check valve seat connection, improves the service life of product.
[0019] The end sleeve joint 3 one end is equipped with the valve seat outer positioning groove 22, valve seat outer thread 23 and valve seat end stop 24 for abutting at the end of end sleeve joint 3 from outside to inside in sequence, the inner wall of joint first docking groove 29 is equipped with joint inner thread 30 for being connected with valve seat outer thread 23 threadedly, further strengthens the connection tightness of end sleeve joint 3 and check valve seat 4, guarantees the sealing of connection.
[0020] The anti -migration locking assembly 10 still includes protective pad 16, and the protective pad 16 is equipped with protective pad wrapping groove 35 for the placement of outer snap spring 15, reduces the damage of outer snap spring 15 due to vibration, guarantees its locking reliable stability.
[0021] The end sleeve joint 3 is provided with, from outside to inside, a sealing ring positioning groove 31, a joint outer sunken groove 32 and a joint outer thread 34 which is screwed with the inner cavity of the hydraulic control one-way valve body 1, and the sealing ring positioning groove 31 is provided with a sealing ring assembly 11, which effectively prevents the fluid in the first joint connecting groove 29 from leaking through the joint locking port 33, and effectively guarantees the sealing performance of the whole product.
[0022] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application are included in the protection scope of the present application.
Claims
1. A hydraulic control check valve comprising a hydraulic control check valve body (1) and a check valve spool assembly provided in the hydraulic control check valve body (1), characterized in that: The one-way valve spool assembly comprises an end sleeve joint (3), a one-way valve seat (4), a one-way valve sleeve (5), a one-way valve top rod (6), a one-way valve spool (7), a top rod return spring (8), a spool return spring (9) and a anti-movement locking assembly (10), two ends of the one-way valve seat (4) are connected with the end sleeve joint (3) and the one-way valve sleeve (5) respectively, the anti-movement locking assembly (10) comprises an inner locking piece (14) and an outer clamping spring (15), the inner locking piece (14) comprises an inner clamping sleeve (17) and a turnover sleeve (18), the inner clamping sleeve (17) is provided with an inner clamping sleeve notch (20), the turnover sleeve (18) is swingably fixed at both ends of the inner clamping sleeve (17) at the inner clamping sleeve notch (20) through a pin (19), one end of the one-way valve seat (4) is provided with a seat outer positioning groove (22), the inner clamping sleeve (17) is sleeved on the seat outer positioning groove (22); The outer clamping spring (15) is provided with an outer clamping spring clamping hole (27) and an outer clamping spring limiting protrusion (28), the end sleeve joint (3) is provided with a joint first butt joint groove (29) for butt joint of one end of the end sleeve joint (3), the end sleeve joint (3) is provided with a joint outer sunken groove (32), the joint outer sunken groove (32) is provided with a joint locking hole (33) corresponding to the turnover sleeve (18), the outer clamping spring (15) is clamped at the joint outer sunken groove (32), and the outer clamping spring limiting protrusion (28) is inserted between the two turnover sleeves (18) through the joint locking hole (33).
2. The pilot operated check valve of claim 1, wherein: One end of the end sleeve joint (3) is sequentially provided with the seat outer positioning groove (22), a seat outer thread (23) and a seat end stop (24) for abutting against the end of the end sleeve joint (3) from outside to inside, and the inner wall of the joint first butt joint groove (29) is provided with a joint inner thread (30) threadedly connected with the seat outer thread (23).
3. The pilot operated check valve of claim 1, wherein: The anti-movement locking assembly (10) further comprises a protective pad (16), and the protective pad (16) is provided with a protective pad wrapping groove (35) for placing the outer clamping spring (15) therein.
4. The pilot operated check valve of claim 1, wherein: The end of the end sleeve joint (3) is sequentially provided with a sealing ring positioning groove (31), the joint outer sunken groove (32) and a joint outer thread (34) threadedly connected with the inner cavity of the hydraulic control one-way valve valve body (1) from outside to inside, and the sealing ring positioning groove (31) is sleeved with a sealing ring assembly (11).