Zero-leakage hydraulic control one-way valve with two-stage opening function
By using a spherical seal and a two-stage opening design, the hydraulic control check valve solves the problems of leakage and large impact of hydraulic control check valves, achieving a zero-leakage and stable hydraulic system.
Patent Information
- Application Number
- CN202423302920.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing hydraulic check valves suffer from significant leakage and large instantaneous opening impact, and most of them are single-stage opening valves, which affects the stability of the hydraulic system.
It adopts a spherical sealing structure and a two-stage opening design. Through the cooperation of the cone valve core and the steel ball, and the combination of the return spring and the tower spring, the cone valve core can move smoothly, reduce leakage, open in stages, and reduce impact.
It achieves zero leakage and two-stage opening, improving the stability and reliability of the hydraulic system and reducing the impact of instantaneous opening.
Smart Images
Figure CN223609406U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model mainly relates to the technical field of hydraulic transmission, specifically relates to a two-stage opening zero leakage hydraulic control check valve. BACKGROUND
[0002] The plug-in hydraulic control check valve is often used in the hydraulic system, is the valve that relies on control fluid pressure to make the check valve reverse flow, most of the hydraulic control check valve spools on the market adopt the style of conical face sealing, in the process of working, the problem of big leakage is prone to appear, and the hydraulic control check valve is mostly one-stage opening, and there is a big impact on the hydraulic system at the opening moment, and there are certain disadvantages, on the basis, in order to meet the diversified development of the market, a conical valve type sequence valve is proposed. UTILITY MODEL CONTENTS
[0003] 1. The technical problem to be solved by the utility model:
[0004] The utility model provides a two-stage opening zero leakage hydraulic control check valve to solve the technical problems in the background art.
[0005] 2. Technical scheme:
[0006] In order to achieve the above object, the technical scheme of the utility model is as follows:
[0007] A two-stage opening zero leakage hydraulic control check valve, comprising
[0008] A main valve sleeve is internally adapted to be installed with a valve sleeve two, and a spring seat and a return spring are installed in the valve sleeve two;
[0009] A push rod two is connected with the valve sleeve two at one end and extends in the main valve seat at the other end;
[0010] A main valve seat is connected with the main valve sleeve through an O-shaped ring, a conical valve core that is adapted to slide is arranged in the main valve seat, a push rod that extends to the outside of the conical valve core is arranged in the conical valve core, and the push rod two is axially moved by the push rod under stress;
[0011] A spring seat is arranged in the valve seat at one end and is used for supporting a tower type spring, the other end of the spring seat is abutted with a steel ball and the steel ball is pressed in the conical valve core, and the other end of the steel ball is connected with the push rod;
[0012] The main valve seat is provided with an annular hole for oil return, the radial outer side of the main valve seat is provided with an oil inlet and an oil outlet, and the axial one end of the main valve sleeve is provided with a pilot port.
[0013] Further improvement lies in that one end of the return spring is pressed on the valve sleeve two, and the other end is pressed on the inner hole end face of one side of the main valve seat.
[0014] Further improvement lies in that the push rod is provided with a steel wire clamping spring.
[0015] Further improvement lies in that the valve seat is provided with external threads on one side, and the main valve seat is provided with internal threads in the inner hole of the connecting side, and the two are connected through threads and fixed through thread glue.
[0016] Further improvement lies in that the main valve seat is provided with an O-ring groove on the outer circle of one side, and the main valve sleeve is provided with an O-ring groove in the inner hole of the corresponding side, and the two are connected through the O-ring.
[0017] Further improvement lies in that the main valve sleeve is provided with a hexagonal socket with opposite sides S12 in the inner hole of one side, and the hexagonal socket is provided with a 2mm wide tool withdrawal groove at the bottom.
[0018] Further improvement lies in that the inner hole of the cone valve core is provided with a sealing R angle in the middle, the steel ball is pressed on the sealing R angle through the spring seat of the tower type spring, and then the cone valve core is pressed on the sealing point of the inner hole of the main valve seat, one end of the tower type spring is arranged in the main valve seat, and the other end is arranged on the spring seat, so that the tower type spring presses the steel ball on the sealing R angle through the spring seat.
[0019] Further improvement lies in that the valve sleeve arranged at the end of the push rod is further included, impact vibration is reduced, and the movement stability of the cone valve core is improved.
[0020] 3. Beneficial effects:
[0021] Compared with the prior art, the technical scheme has the following beneficial effects:
[0022] The liquid control check valve core provided by the utility model adopts a spherical sealing structure, reduces leakage, and improves reliability;
[0023] The liquid control check valve provided by the utility model has two-stage opening function, can effectively reduce the impact of instantaneous opening, and enhances the stability of the hydraulic system. BRIEF DESCRIPTION OF DRAWINGS
[0024] Fig. 1 It is a structural schematic view of the utility model;
[0025] Fig. 2 It is a structural schematic view of the main valve sleeve of the utility model;
[0026] Fig. 3 It is a structural schematic view of the slide valve core of the utility model.
[0027] REFERENCE SIGNS:
[0028] 1-valve seat; 2-tower type spring; 3-spring seat; 4-steel ball; 5-cone valve core; 6-valve sleeve; 7-push rod; 8-main valve seat; 9-push rod two; 10-main valve sleeve; 11-return spring; 12-spring seat two; 13-steel wire retainer ring; 14-valve sleeve two. DETAILED DESCRIPTION
[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "provided with" and other terms should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. It can be mechanically connected, or it can be electrically connected. It can be directly connected, or it can be indirectly connected through an intermediate medium. It can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0031] It should be noted that the structures not introduced in the present application are all adopted in the prior art, as they do not involve the design points and improvement direction of the present application. The above content belongs to the technical knowledge of the present application. Since the technical content in this field is vast and complex, the above content of the present application does not necessarily constitute the prior art.
[0032] Reference Figs. 1-3 The improved hydraulic control check valve provided by the present embodiment has strong stability, small impact, zero leakage, and good reliability. Specifically, the two-stage opening zero leakage hydraulic control check valve comprises a valve seat 1, a tower type spring 2, a spring seat 3, a steel ball 4, a cone valve core 5, a valve sleeve 6, a push rod 7, a main valve seat 8, a push rod two 9, a main valve sleeve 10, a return spring 11, a spring seat two 12, a steel wire retainer ring 13, and a valve sleeve two 14. The mounting mode of the plug-in hydraulic control check valve is plug-in, and the outer thread of the main valve sleeve 10 is connected with the valve block. The main valve sleeve 10 has a 0.5mm small hole, and the inner hole is processed with two O-ring grooves for assembling O-rings. The main valve sleeve 10 is provided with the spring seat two 12, the valve sleeve two 14, the return spring 11, and the push rod two 9. The main valve seat 8 and the main valve sleeve 10 are connected through the O-ring. The main valve seat 8 is provided with the spring seat 3, the steel ball 4, and the cone valve core 5. The steel ball 4 is pressed in the cone valve core 5 under the spring force, and then pushes the cone valve core 5 to be pressed in the main valve seat 8. The main valve seat 8 is provided with an annular hole for oil return, and an inclined hole (i.e. ①) for oil inlet is located on the outer side of the main valve seat 8.
[0033] The outer diameter of the main valve sleeve 10 is provided with two "O" rings and an open check ring, which are used for sealing oil and preventing oil leakage.
[0034] The outer thread is arranged on the right side of the valve seat 1, the inner thread is arranged on the large hole of the left side of the main valve seat 8, the two are connected through threads and fixed by thread glue; the O-ring groove is arranged on the outer circle of the right side of the main valve seat 8, and the O-ring groove is arranged on the inner hole of the left side of the main valve sleeve 10, and the two are connected through the O-ring;
[0035] The outer diameter of the push rod two 9 is provided with a steel wire clasp spring 13, so that the push rod two 9 and the spring seat two 12 can be normally reset;
[0036] The large hole in the valve sleeve 10 is provided with a reset spring 11, a spring seat two 12, a steel wire check ring 13 and a valve sleeve two 14, one end of the reset spring 11 is pressed on the valve sleeve two 14, the other end is pressed on the right side of the inner hole of the main valve seat 8, and the reset spring 11 plays a reset role, the inner hole of the main valve sleeve 10 and the connection between the push rod two 9 and the main valve seat 8 are all provided with O-rings, which are used for sealing oil in the pilot stage and preventing oil leakage.
[0037] The inner hole of the valve seat 1 is provided with one end of the spring seat 3, which is mainly used for stable guiding, so that the steel ball 4 cannot be deflected too much, the inner hole of the conical valve core 5 has an R angle, the tower type spring 2 presses the steel ball 4 on the R angle through the spring seat 3, and then pushes the conical valve core 5 to press on the inner hole sealing point of the main valve seat 8
[0038] The inner holes of the main valve seat 8 and the main valve sleeve 10 are all provided with O-ring grooves, and the O-rings are arranged in the O-ring grooves, which are used for isolating oil and preventing oil leakage in the pilot stage.
[0039] The right side of the main valve sleeve 10 has an S12 opposite side inner hexagon, an inner hexagonal wrench is sleeved in the inner hexagonal wrench, which is used for the installation of the product, the inner hexagonal bottom of the main valve sleeve 10 has a 2mm wide tool withdrawal groove, and a 0.5mm small hole is connected, and the damping hole can effectively reduce the impact when the oil enters.
[0040] When ① is used as an oil inlet, ② is used as an oil outlet, and ④ is connected to a pilot, the pilot is connected to oil, the pilot pressure is gradually increased, the push rod pushes away the steel ball to pass oil, when the pressure reaches the opening force value of the conical valve core, the conical valve core is opened, and the two-stage opening is realized.
[0041] The above-described embodiments only express certain implementation manners of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application; it should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A two-stage opening zero-leakage hydraulic control non-return valve, characterized in that, Comprising The main valve sleeve, which is adapted to install the valve sleeve two inside, the spring seat and the return spring are installed in the valve sleeve two, one end of the return spring is connected with the valve sleeve two, and the other end is arranged in the main valve seat; The push rod two, one end of which is connected with the valve sleeve two, and the other end extends in the main valve seat; The main valve seat is connected with the main valve sleeve through the O-shaped ring, the conical valve core is arranged in the main valve seat and slides, the push rod extending to the outside of the conical valve core is arranged in the conical valve core, and the push rod two is forced to push the push rod to move axially; The spring seat, one end of which is arranged in the valve seat and used for supporting the tower type spring, the other end of the spring seat is abutted with the steel ball and presses the steel ball in the sealing surface of the conical valve core, and the other end of the steel ball is connected with the push rod; Wherein, the main valve seat is provided with an annular hole for returning oil, the radial outer side of the main valve seat is provided with an oil inlet and an oil outlet, and the axial one end of the main valve sleeve is provided with a pilot port.
2. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, One end of the return spring is pressed on the valve sleeve two, and the other end is pressed on the end face of the side inner hole of the main valve seat.
3. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, The outer diameter of the push rod two is provided with a steel wire snap spring.
4. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, The valve seat side is provided with external threads, the inner hole of the main valve seat connection side is provided with internal threads, and the two are connected through threads and fixed by thread glue.
5. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, The outer circle of the main valve seat side is provided with an O-shaped ring groove, and the corresponding inner hole of the main valve sleeve is provided with an O-shaped ring groove, and the two are connected through the O-shaped ring.
6. A two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, The inner hole of the main valve sleeve side is machined with a hexagonal socket with opposite sides S12, and the bottom of the hexagonal socket is machined with a 2mm wide tool withdrawal groove.
7. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, The inner hole of the conical valve core has a sealing R angle in the middle, the tower type spring presses the steel ball on the sealing R angle through the spring seat, and drives the conical valve core to press on the inner hole sealing point of the main valve seat.
8. The two-stage opening zero-leakage hydraulic control non-return valve according to claim 1, characterized in that, It also includes a valve sleeve arranged at the end of the push rod.