CN216895517U

CN216895517U - Damper integrated combined valve

Info

Publication number: CN216895517U
Application number: CN202122777502.3U
Authority: CN
Inventors: 王斌
Original assignee: SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY CO Ltd
Current assignee: SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY CO Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-07-05
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses an integrated combination valve of a damper, which has high integration degree, small volume and compact structure and is realized by the following technical scheme: the upper combined valve component and the lower combined valve component are connected in parallel in a closed loop circulating hydraulic circuit and are mutually communicated, the components are the same and are opposite, the damping cavity is provided with a damping valve spring, and a fan-shaped flow passage and a spring safety valve for cone-sealed damping cylinder pipeline fluid, which are communicated with a left hydraulic cavity fluid medium input pipeline and a right hydraulic cavity fluid medium output pipeline of the damping cylinder, are arranged on the wall of the valve seat; in a free state, the floating conical surface valve chamber is in a closed state by matching with the conical surface, a control fluid source from the damping cylinder is cut off, the hydraulic right chamber is blocked to move, and the lower combined valve assembly is cut off. High-pressure fluid flows into the left cavity of the damping cylinder through the fan-shaped flow passage, the other path of high-pressure fluid flows into the fan-shaped flow passage on the valve seat of the upper combined valve assembly, the valve cone check valve is opened, the high-pressure fluid flows into the right cavity of the damping cylinder, the compression spring is formed to urge and absorb external impact energy, pressure relief is achieved, and vice versa.

Description

Damper integrated combined valve

Technical Field

The utility model relates to an integrated combination valve mainly applied to an aviation hydraulic damper.

Background

The combined valve has the characteristics of high integration degree, small volume, compact structure, good sealing performance, large flow capacity, long service life and the like. Is an important part applied to hydraulic equipment. The functions of check valves, unloader valves, pilot valves, direct-acting valves, relief valves, and unloader valve cartridge components are typically included. Spring dampers, hydraulic dampers, impulse dampers, rotary dampers, wind dampers, viscous dampers, etc. in various applications are used at present on pressurized equipment, containers or pipelines as overpressure protection devices. When the pressure in the equipment, the container or the pipeline rises to exceed an allowable value, the valve is automatically opened and then fully discharged so as to prevent the pressure in the equipment, the container or the pipeline from rising continuously; when the pressure is reduced to a specified value, the valve should be automatically closed in time, so as to protect the safe operation of equipment, a container or a pipeline. The relief valve may be driven directly by the system pressure at the valve inlet, in this case by a mechanical load provided by a spring or weight to overcome the pressure of the medium acting under the flap. They may also be piloted by a mechanism that opens or closes the safety valve by releasing or applying a closing force. Therefore, the safety valve is classified into a direct-acting type and a pilot type according to the above driving mode. The safety valve may be proportionally opened over the entire opening height range or over a considerable opening height range-possibly only a small opening height range-and then abruptly opened to the fully open position. Therefore, the safety valve can be divided into a proportional type and a full open type. The structure, application and nominal path of the safety valve are determined by the specifications, and the constraint terms and the related definitions may differ between different specifications. The single safety valve is an automatic pressure relief protection device opened by static pressure at an inlet, is an overpressure protection component commonly used for hydraulic products, is one of the most important safety accessories of a pressure container, and has the functions of: when the pressure in the container exceeds a certain value, the valve is automatically opened by the pressure of the medium, and a certain amount of medium is quickly discharged. When the pressure in the container drops to an allowable value, the valve automatically closes again, so that the pressure in the container is always lower than the upper limit of the allowable pressure, and possible accidents caused by overpressure are automatically prevented, so that the safety valve is also called as a final protection device of the pressure container. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation. The safety valve is also called as a pressure relief valve and is divided into a spring type safety valve, a lever type safety valve and a pulse type safety valve according to the structural form, wherein the spring type safety valve is most commonly applied, and is divided into a thread safety valve and a flange type safety valve according to the connection mode. The safety valve is also called a check valve because it is irreversible by hydraulic flow. The hydraulic component is a hydraulic component which has small stroke and multiple impact motions and enables two cavities of a hydraulic product to realize mutual communication, and is suitable for various hydraulic accessories and hydraulic system devices. The working principle is that when the hydraulic pressure is higher than the valve core closing force provided by the spring, the safety valve core compresses the spring to move under the action of the hydraulic pressure, the conical surface of the valve core is separated from the conical surface of the valve seat, and the liquid flows to the other cavity of the hydraulic product through the conical ring belt, so that the pressure relief function is realized, the related parts of the hydraulic accessory are protected, and the parts cannot be damaged under the hydraulic action. The safety valve in the common sense is only used for releasing hydraulic pressure and protecting related parts of the safety valve, and the required working times are less.

The single damping valve is a valve mechanism which realizes a damping buffer function by utilizing a small hole throttling principle, generates heat by molecular extrusion motion of liquid flowing through a small hole of a damping valve core and converts external mechanical energy into heat energy for dissipation; the integrated combined valve has the advantages that the related parts of the hydraulic damper need to be protected safely, the maximum load of the damper is controlled accurately, the damper needs to be opened frequently when working normally, the requirements on flow and flow resistance are high, and the requirements on impact resistance, wear resistance and sealing performance of the sealing conical surface of the valve core and the valve seat are high.

At present, safety valves and damping valves in hydraulic damping systems and hydraulic accessories are mostly in single structures. The safety valve features that the working liquid flows from the front cavity of the valve to the valve core, the hydraulic pressure acting on the valve core is balanced directly with spring force, and the contact pressure of the valve port sealing pair is reduced with the pressure inside the system. The damping valve has the working characteristics slightly different from that of a safety valve, working liquid flows from a rear cavity of the valve to a valve core during the damping function, the valve core is closed, oil passes through a damping small hole, the damping buffer function is realized by utilizing the small hole throttling principle, and the liquid flows through the small hole of the damping valve core to generate molecular extrusion motion to generate heat so as to convert external mechanical energy into heat energy for dissipation; the oil supplementing function is similar to that of a safety valve in the basic principle, working liquid flows from a front cavity of the valve to the valve core, hydraulic pressure acting on the valve core is directly balanced by spring force, contact pressure of a valve port sealing pair is reduced along with increase of pressure in a system, but the valve port sealing pair is in a non-high pressure state, and the designed opening force is as low as possible. The integrated combined valve integrates the functions of a safety valve and a damping valve, has the functions of safety protection, pressure balance and damping buffering, and has higher requirement on the integration level of structural design, and the structure cannot be used as a large-flow safety valve due to the characteristics of the structure. In order to meet the requirement of large-flow use, the oil return groove is designed in the limited structural size of the damping valve seat. Due to the particularity of aviation products, the requirement for weight reduction of the products is high, so that the requirement for compactness is outstanding in structural design, and the design difficulty of the integrated combination valve of the aviation damper is high.

According to the application value, the larger integrated combined valve structure is an advanced structure form of the aviation hydraulic combined valve appearing in recent years. The integrated combined valve utilizes the special-shaped fan-shaped flow passage of the damping valve seat to meet the requirement of large flow, so that the size of the combined valve can be greatly reduced, and the problem caused by the over-design index of large mass of the structure can be avoided. The inner core components of the integrated combined valve mechanism are a damping valve seat, a safety valve core, a damping valve core and a spring, and the maximum mechanical displacement which can be realized by the safety valve core is called opening. Because the sealing conical surfaces of the safety valve core and the safety valve seat have frequent impact action, the impact force is acted by spring force, and the opening degree of the valve core controls the maximum flow rate which can be passed by a product during working, so that the maximum damping load is restricted and influenced. In order to prevent the self-excitation phenomenon when the valve core is opened and closed, the matching design of the spring stiffness and the valve core quality is especially studied, and the design of the conical surface angle and the conical surface annular area is also critical. Because the valve core and the valve seat in the internal mechanism need to have the capability of resisting impact and have higher requirement on vibration resistance, the impact in the range of action characteristics is generally required to be met in order to avoid the damage caused by mechanical impact, and the damage of parts caused by the action impact is avoided.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art and the problem that the pressure relief and damping functions of a single safety valve and a damping valve mechanism do not meet the use requirements, the utility model aims to provide the combined valve which has the advantages of high integration degree, small volume, compact structure, good sealing property, large flow capacity, long service life, vibration resistance, impact resistance and safety protection and damping buffer functions.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a damper integrated combination valve comprising: the upper combination valve assembly 9 and the lower combination valve assembly 11 which are connected in parallel in the closed-loop circulating hydraulic circuit and are communicated with each other, the components of which are the same and are opposite to each other, and the damping cylinder 12 communicated with the closed-loop circulating hydraulic circuit are characterized in that: the damping cavities of the upper combined valve component 9 and the lower combined valve component 11 are provided with a damping valve spring 6, the wall of a valve seat is provided with a spring safety valve 1 for communicating the left hydraulic cavity fan-shaped flow passage and the right hydraulic cavity fan-shaped flow passage of a damping cylinder 12 and a cone sealing damping cylinder pipeline fluid, a back end valve core spring 3 acts on a floating cone valve cavity matching cone surface, an axial damping hole for closing and cutting a valve cone check valve 2 from a damping cylinder 12 control fluid source to communicate the channel of the lower combined valve component 11 is closed, the fan-shaped flow passage on the wall of the valve seat of the upper combined valve component 9 is communicated with a valve core floating cavity 8, and a cone sealing valve hole of the cone damping valve core 5 is pushed.

Compared with the prior art, the utility model has the following beneficial effects:

the damper integrated combined valve is formed by the upper combined valve component 9 and the lower combined valve component 11 which are connected in parallel in the closed loop circulating hydraulic circuit, has high integration degree, small volume, compact structure, good sealing performance and large flow capacity, effectively reduces the structural appearance of the product, and lightens the weight. The valve cone check valve 2 has the advantages of large closing moment (25-30% can be improved), good opening and closing consistency, uniform stress, no deformation, tighter and smoother closing, high reliability, lower leakage, capability of prolonging the service life of an actuator and greatly reducing maintenance times. The damping buffer function is realized by utilizing the orifice throttling principle, the related parts of the hydraulic damper are required to be protected safely, the maximum load of the damper is accurately controlled, the damper is not required to be opened frequently during normal work, and the sealing conical surface is impact-resistant. When the valve core is opened to a certain opening degree, enough oil can smoothly pass through the annular belt at the conical surface part of the valve core and then flow to the other cavity through the fan-shaped flow passage on the damping valve seat, so that the damping load is ensured not to continuously climb, and when the damping piston realizes reverse motion, the damping piston is quickly closed under the action of spring force. Under the precondition of ensuring to provide required safety protection and realizing the requirement of damping function, the damper has the characteristics of small volume, light weight, long service life, good sealing property and the like. And has better use stability and durability.

High-pressure working fluid medium enters a valve core moving cavity 8 through a fan-shaped flow passage on the valve seat wall of an upper combined valve component 9 to push a conical damping valve core 5 to seal a valve hole, high-pressure fluid enters a lower conical surface valve cavity 10 through an axial damping small hole flow communication channel on the end surface of the conical damping valve core 5 to push the conical damping valve core 5 in a lower combined valve to move, the valve core is pushed open, the conical sealing valve hole is opened, the lower combined valve is closed, the pressure of a right cavity of a damping cylinder rises, a damping piston moves towards the right end of the damping cylinder in an accelerated manner, and the pressure of the left cavity of the damping cylinder gradually decreases; high-pressure fluid flows into the left cavity of the damping cylinder through the fan-shaped flow passage, and one path of the high-pressure fluid flows into the left cavity of the damping cylinder, so that the pressure relief safety protection function is realized; the fan-shaped flow passage provides guarantee for large-flow oil to flow from one cavity of the damping cylinder to the other cavity, and the damping valve seat with the fan-shaped flow passage and the front and rear floating chambers and the safety valve seat with the inner cone type sealing pair and the valve core floating chamber effectively guarantee stable and symmetrical work of the damper under the full use condition. Through screw thread pair connection, the terminal surface machinery is spacing, disposes valve cone check valve, case spring, adjusting washer, circular cone damping case, damping valve spring, damping valve adjusting washer and steel wire retaining ring etc. constitute integrated form combination valve, and is small, the quality is light, and antipollution ability is strong, and response speed is fast, and sensitivity is high, can replace traditional unicity relief valve and damping valve.

According to the utility model, the fan-shaped flow passage on the valve seat of the upper combination valve opens the valve cone check valve 2 in the upper combination valve, so that large-flow fluid is absorbed and flows to the right cavity of the damping cylinder, the pressure relief safety protection function is realized, the compression spring is formed to urge and absorb external impact energy, and the effective anti-resonance effect on a rotor wing structural member is realized. The damping buffer function is realized by utilizing the orifice throttling principle, the related parts of the hydraulic damper are required to be protected safely, the maximum load of the damper is accurately controlled, the damper is not required to be opened frequently during normal work, and the sealing conical surface is impact-resistant. When the valve core is opened to a certain opening degree, enough oil can smoothly pass through the annular belt at the conical surface part of the valve core and then flow to the other cavity through the fan-shaped flow passage on the damping valve seat, so that the damping load is ensured not to continuously climb, and when the damping piston realizes reverse motion, the damping piston is quickly closed under the action of spring force. The defects of high movement speed and large impact of an actuating part in a required use environment are overcome.

The integrated combined valve mechanism is mainly used for reducing impact energy and working stably of the damper, can ensure that the damper can work stably under a high-speed working condition and realize bidirectional symmetrical damping under a high-frequency wide-amplitude working condition, keeps stable working, and can be used for replacing the traditional integrated valve assembly mechanism of a single safety valve and a damping valve.

Drawings

FIG. 1 is a schematic representation of the construction of an integrated combination damper valve for use in a hydraulic damper according to the present invention;

FIG. 2 is a schematic diagram of the operation of the upper and lower combination valve assemblies of FIG. 1;

FIG. 3 is a side view of the upper and lower damping valve seats of FIG. 2;

FIG. 4 shows the direction and action principle of the retainer ring groove and the retainer ring opening groove;

in the figure: the valve comprises a spring safety valve 1, a valve cone check valve 2, a valve core spring 3, a spring seat 4, a conical damping valve core 5, a damping valve spring 6, a damping valve adjusting washer 7, a valve core floating cavity 8, an upper combined valve component 9, a lower conical surface valve cavity 10 and a lower combined valve component 11.

The utility model is further illustrated with reference to the following figures and examples, without thereby limiting the scope of the utility model to the described examples. All such concepts are intended to be within the scope of the present disclosure and the present invention.

Detailed Description

Refer to fig. 1 and 3. In a preferred embodiment described below, a damper integrated combination valve comprises: an upper combination valve assembly 9 and a lower combination valve assembly 11 which are connected in parallel in a closed loop circulating hydraulic circuit and communicated with each other, and the components are the same and are opposite to each other, and the hydraulic control system is characterized in that: damping cavities of the upper combined valve component 9 and the lower combined valve component 11 are provided with damping valve springs 6, and the wall of the valve seat is provided with a fan-shaped flow passage and a spring safety valve 1 for cone-sealed damping cylinder pipeline fluid, wherein the fan-shaped flow passage is communicated with fluid medium input and output pipelines of a left hydraulic cavity and a right hydraulic cavity of a damping cylinder 12; in a free state, the elasticity of a valve cone check valve 2 of a spring safety valve 1 at a valve core spring 3 at the back end acts on a valve cavity of a floating conical surface to match with the conical surface, the valve cavity is in a closed state, a control fluid source from a damping cylinder is cut off, when a damping piston of the damping cylinder moves towards a hydraulic right cavity in a blocking way, a lower combined valve component 11 is cut off, a high-pressure working fluid medium of the damping cylinder enters a valve core moving cavity 8 through a fan-shaped flow passage on the valve seat wall of an upper combined valve component 9, the conical damping valve core 5 is pushed to seal a valve hole, high-pressure fluid is axially communicated with the lower combined valve component 11 through the end face of the conical damping valve core 5 in the blocking way, the conical damping valve core 5 in the lower combined valve component 11 is pushed to move leftwards through a communication passage, the valve core is pushed to be opened, the conical valve hole is opened, the valve cone check valve 2 of the lower combined valve component 11 is pushed to close the lower conical surface valve cavity 10, the pressure of the right cavity of the damping cylinder is increased, the damping piston moves towards the right end of the damping cylinder in an accelerated manner, and the pressure of the left cavity of the damping cylinder is gradually reduced; high-pressure fluid flows into the left cavity of the damping cylinder through the fan-shaped flow passage, and one path of the high-pressure fluid flows into the left cavity of the damping cylinder, so that the pressure relief safety protection function is realized; and the other path opens the valve cone check valve 2 in the upper combined valve assembly 9 through a fan-shaped flow passage on the valve seat of the upper combined valve assembly 9, absorbs large-flow fluid and flows to the right cavity of the damping cylinder to form a compression spring to urge and absorb external impact energy, so that the pressure relief safety protection function is realized, and vice versa.

The upper combination valve assembly 9 includes: the damping valve comprises a damping cylinder 12 and a valve cone check valve 2 which are communicated with a damping cylinder left cavity pipeline, a valve core spring 3 assembled between a cantilever shaft at the back end of the valve cone check valve 2 and a spring seat 4, a conical damping valve core 5 sealed on a conical valve hole of the spring seat 4 in a conical mode, and a damping valve spring 6 assembled between a step hole in a cantilever cylinder body at the back end of the conical damping valve core 5 and a damping valve adjusting gasket 7. Fluid flows along an inlet of a conical surface valve cavity on the spring safety valve 1, the valve cone check valve 2 stops the backflow of fluid medium, and working fluid flows into a left cavity of the damping cylinder through a check ring groove 14 of a valve seat fan-shaped flow passage 13 of a valve core moving cavity by adjusting a valve core spring 3 which is connected between the back end of the valve cone check valve 2 and the end surface of a hole of a spring seat 4 in series and a damping valve spring 6 which is packaged in a cantilever cylinder of a conical damping valve core 5 on a conical hole of the rear end surface of the spring seat 4. Two symmetrical retainer ring opening grooves 15 are formed in the diameter direction of the retainer ring groove 14.

The valve cone check valve 2 and the lower conical surface valve cavity are provided with an inner conical valve port sealing pair, a core floating cavity and a thread pair, the valve cone check valve 2 is sealed by adopting a conical surface, and sufficient oil through holes are uniformly distributed at the rear end of the conical surface.

The lower combined valve component 11 and the conical damping valve core 5 in the upper combined valve component 9 are sealed by adopting conical surfaces, sufficient oil through holes are uniformly distributed at the rear ends of the conical surfaces, a front cavity chamber is provided with a valve core spring 3 and a spring seat 4, and a rear cavity chamber is provided with a damping valve adjusting gasket 7.

And the lower combined valve assembly 11 is in mirror symmetry with the upper combined valve assembly 9, the direction is opposite, and the upper combined valve assembly 9 is communicated with a stepped hole of the lower combined valve assembly 11 through a stepped hole fluid passage of the spring seat 4.

In the free state, the conical damping valve core 5 is in a matching state through conical surfaces of the upper combination valve assembly 9 and the lower combination valve assembly 11 respectively, and is in a closed state with the upper combination valve assembly 9 and the lower combination valve assembly 11 through the elastic force of the damping valve spring 6 acting on the conical surfaces. When the damping piston of the damping cylinder moves towards the right end of the damping cylinder at a low speed, working liquid flows through the lower combined valve component 11 through the damping small hole of the conical damping valve core 5 in the upper combined valve component 9, pushes open the conical damping valve core 5 in the lower combined valve component 11 to move and open, and flows to the right cavity of the damping cylinder, so that the throttling function is realized; when the damping piston moves at a high speed towards the right end of the damping cylinder, working liquid cannot flow to the left cavity of the damping cylinder through the damping small holes of the conical damping valve core 5 in the upper combined valve component 9, the pressure of the right cavity of the damping cylinder rises, the valve cone check valve 2 in the lower combined valve is opened, and large-flow absorption oil flows to the right cavity of the damping cylinder through the fan-shaped flow passage on the lower combined valve component 11, so that the pressure relief safety protection function is realized, the compression spring is formed to urge and absorb external impact energy, and the integrated combined valve is formed. On the contrary, when the damping piston moves towards the left end of the damping cylinder at a low speed, the working fluid flows through the upper combined valve component 9 through the damping small hole of the conical damping valve core 5 in the lower combined valve, pushes open the conical damping valve core 5 in the upper combined valve component 9 to move and open, and flows to the right cavity of the damping cylinder, so that the throttling function is realized; when the damping piston realizes high-speed movement towards the left end of the damping cylinder, working liquid cannot flow to the right cavity of the damping cylinder through the damping small holes of the conical damping valve core 5 in the upper combination valve, the pressure of the left cavity of the damping cylinder rises, the valve cone check valve 2 in the upper combination valve assembly 9 on the upper combination valve is opened, and absorption large-flow oil flows to the right cavity of the damping cylinder through the fan-shaped flow passage 13 on the upper combination valve assembly 9, so that the pressure relief safety protection function is realized, the compression spring is formed to actuate and absorb external impact energy, and the integrated combination valve is formed.

What has been described above is merely a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the principle of the present invention, for example, by adjusting the actual structure and by extending to other application platforms in other system fields, and such changes and modifications should be construed as falling within the protection scope of the present invention.

Claims

1. A damper integrated combination valve comprising: an upper combination valve component (9) and a lower combination valve component (11) which are connected in parallel in a closed-loop circulating hydraulic circuit and communicated with each other, have the same components and are opposite to each other, and a damping cylinder (12) communicated with the closed-loop circulating hydraulic circuit, wherein the damping cylinder is characterized in that: damping cavities of the upper combined valve component (9) and the lower combined valve component (11) are configured with damping valve springs (6), the valve seat wall is provided with a spring safety valve (1) and a back end valve core spring (3) which are communicated with fan-shaped channels of a left hydraulic cavity and a right hydraulic cavity of the damping cylinder (12) and used for cone sealing damping cylinder pipeline fluid, the spring safety valve and the back end valve core spring act on a valve cavity matching conical surface of the floating conical surface, a valve cone check valve (2) which is used for controlling a fluid source from the damping cylinder (12) is closed and cut off, an axial damping hole which is communicated with a channel of the lower combined valve component (11) is communicated, a valve core floating cavity (8) is communicated through the fan-shaped channels on the valve seat wall of the upper combined valve component (9), and a cone sealing valve hole (5) is pushed.

2. The damper integrated combination valve as in claim 1, wherein: the lower combined valve component (11) is internally provided with a conical damping valve core (5) for pushing the valve cone check valve (2) to close the lower conical surface valve cavity (10).

3. The damper integrated combination valve as in claim 2, wherein: one path of the fan-shaped flow passage is communicated with the left cavity of the damping cylinder, and the other path of the fan-shaped flow passage is communicated with the right cavity of the damping cylinder on the valve seat of the upper combined valve component (9), so that a pressure relief passage for promoting the compression spring to absorb the external impact energy is formed.

4. The damper integrated combination valve as in claim 1, wherein: the upper combination valve assembly (9) comprises: the damping valve comprises a damping valve spring (6) assembled between a step hole in a cantilever cylinder body at the back end of a conical damping valve core (5) and a damping valve adjusting gasket (7), a damping cylinder (12) and a valve cone check valve (2) communicated with a left cavity pipeline of the damping cylinder, a valve core spring (3) assembled between a cantilever shaft at the back end of the valve cone check valve (2) and a spring seat (4), and the conical damping valve core (5) sealed in a conical valve hole of the spring seat (4).

5. The damper integrated combination valve as in claim 1, wherein: the conical valve on the spring safety valve (1) is used for stopping the backflow of a fluid medium through the valve cone check valve (2), the back end of the valve cone check valve (2) is connected with the valve core spring (3) in series, the valve core spring (3) is packaged between the end faces of the holes of the spring seat (4), and the damping valve spring (6) is arranged in the cantilever cylinder of the conical damping valve core (5) on the conical hole of the rear end face of the spring seat (4).

6. The damper integrated combination valve of claim 5, wherein: two symmetrical retainer ring opening grooves (15) are formed in the diameter direction of the retainer ring annular groove (14).

7. The damper integrated combination valve as in claim 1, wherein: the valve cone check valve (2) and the lower conical surface valve cavity are provided with an inner conical valve port sealing pair, the valve cone check valve (2) is sealed by adopting a conical surface, and the rear end of the conical surface is uniformly provided with sufficient oil through holes.

8. The damper integrated combination valve as in claim 1, wherein: the conical damping valve core (5) in the lower combined valve component (11) and the upper combined valve component (9) is sealed by adopting a conical surface, sufficient oil through holes are uniformly distributed at the rear end of the conical surface, a front cavity is provided with a valve core spring (3) and a spring seat (4), and a rear cavity is provided with a damping valve adjusting gasket (7).

9. The damper integrated combination valve of claim 8, wherein: the lower combined valve component (11) is mirror-symmetrical to the upper combined valve component (9), the direction is opposite, and the upper combined valve component (9) is communicated with a stepped hole of the lower combined valve component (11) through a stepped hole fluid passage of the spring seat (4).

10. The damper integrated combination valve of claim 8, wherein: the conical damping valve core (5) respectively applies the elastic force of the damping valve spring (6) to the conical surface through the conical surfaces of the upper combined valve component (9) and the lower combined valve component (11), and the upper combined valve component (9) and the lower combined valve component (11) are placed in a closed state.