CN111473084B

CN111473084B - Frequency valve

Info

Publication number: CN111473084B
Application number: CN202010422513.7A
Authority: CN
Inventors: 黄小伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2023-06-13
Anticipated expiration: 2040-05-19
Also published as: CN111473084A

Abstract

The invention discloses a frequency valve, which comprises a valve body, wherein a flow passage for communicating an inlet and an outlet is arranged on the valve body, a control cavity is arranged below the flow passage in the valve body, a main valve core is movably arranged in the control cavity, the main valve core moves up and down in the control cavity to adjust the flow between the outlet and the flow passage, a communication hole for communicating the flow passage with the control cavity is formed in the main valve core, a control valve for changing the volume of the control cavity is further arranged at the lower part of the control cavity, and a balance channel communicated with the control cavity is arranged on the valve body. Through the mode, when the up-and-down reciprocating frequency of the valve changes, the frequency valve realizes the liquid flow regulation function by the up-and-down movement of the main valve core, reduces the fatigue strength and prolongs the service life.

Description

Frequency valve

Technical Field

The invention relates to the field of valves, in particular to a frequency valve.

Background

Dampers or shock absorbers are well known and widely used in, for example, a variety of vehicles such as automobiles, trucks, buses, and trains. To provide the desired frequency variation damping characteristics. Such frequency valves may be added or incorporated in known damper configurations to provide an adjustable damping characteristic of the shock absorber. On the other hand, such frequency selective dampers may also find application in certain applications where a frequency-varying flow rate of fluid flow between two (pressure) chambers is required to also follow the variation.

In patent application cn2016680023757. X a frequency-varying damping valve and a shock absorber comprising the damping valve are disclosed, the valve of which structure changes the flow through the valve when the frequency of the up-down movement of the valve changes, so that the damping of the shock absorber changes with frequency.

Disclosure of Invention

The invention mainly solves the technical problem of providing a frequency valve, which realizes the liquid flow regulation function by the up-and-down movement of a main valve core when the up-and-down reciprocating frequency of the valve changes, and changes damping along with the frequency change of a shock absorber.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a frequency valve, including the valve body, be equipped with the runner of import, export and intercommunication both on the valve body, have the control chamber that is located the runner below in the valve body, the control intracavity activity is provided with the main valve core, the flow between export and the runner is adjusted in the control chamber reciprocates to the main valve core, set up the intercommunicating pore that makes runner and control chamber intercommunication on the main valve core, the lower part of control chamber still is equipped with the control valve that changes control chamber volume, be equipped with the balance channel with the control chamber intercommunication on the valve body.

In a preferred embodiment of the invention, the upper side of the main valve core and the valve body are provided with grooves which are used for balancing the section pressure of the valve port.

In a preferred embodiment of the invention, the grooves are located at the upper end of the main valve core and the lower section of the valve body, and different section pressures of the valve port can be obtained by changing the shape and the size of the grooves.

In a preferred embodiment of the invention, the outer side of the main valve core is tightly attached to the inner wall of the valve body, and the two forms a reciprocating dynamic sealing structure.

In a preferred embodiment of the invention, an elastic member connected with the valve body is arranged on the inner side of the main valve core, and the elastic member provides elastic force for the main valve core to move upwards.

In a preferred embodiment of the invention, the balancing passage comprises a balancing hole opened in the valve body, which balancing hole communicates with the lower end of the control chamber, and which balancing hole is located at the upper side of the control valve, and a balancing chamber located at the upper side of the balancing hole.

In a preferred embodiment of the present invention, the control valve comprises a plurality of elastically deformable valve plates stacked together, two ends of the control valve are fixedly connected to the inner side of the valve body, and a sealing ring for sealing the control cavity and the valve body is further arranged at the upper end of the control valve.

The beneficial effects of the invention are as follows: when the up-and-down reciprocating frequency of the valve changes, the frequency valve realizes the liquid flow regulation function by the up-and-down movement of the main valve core, and has the advantages of simple structure, small volume and quick regulation.

Drawings

For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of a preferred embodiment of a frequency valve according to the present invention;

FIG. 2 is a partial schematic view of the structure of FIG. 1;

the components in the drawings are marked as follows: 1. valve body, 11, inlet, 12, outlet, 13, runner, 14, control chamber, 15, balance channel, 151, balance hole, 152, balance chamber, 16, boss, 2, main valve core, 21, communication hole, 22, groove wall, 23, groove, 24, elastic component, 3, control valve, 31, valve block, 4, sealing washer.

Description of the embodiments

The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, a frequency valve includes a valve body 1, a flow channel 13 provided with an inlet 11, an outlet 12 and a communication channel, a control cavity 14 located below the flow channel 13 is provided in the valve body 1, a main valve core 2 is movably provided in the control cavity 14, the main valve core 2 moves up and down in the control cavity to regulate the flow between the outlet 12 and the flow channel 13, a communication hole 21 is provided on the main valve core 2 to enable the flow channel 13 to be communicated with the control cavity 14, a control valve 3 for changing the volume of the control cavity 14 is further provided at the lower part of the control cavity 14, and a balance channel 15 communicated with the control cavity 14 is provided on the valve body 1.

The outer side of the main valve core 2 is tightly attached to the inner wall of the valve body 1, and the main valve core and the valve body form a reciprocating dynamic sealing structure. The frequency of the valve up-and-down movement changes the pressure in the inner cavity to cause the main valve core 2 to move up-and-down, and the size of the communication opening between the outlet 12 and the flow channel 13 is determined, so that the size of the outlet flow is regulated.

In addition, an elastic member 24 connected to the valve body 1 is provided on the inner side of the main spool 2, and the elastic member 24 provides an elastic force for upward movement of the main spool 2. Since the oil pressure of the flow passage 13 is larger than the sum of the oil pressure of the control chamber 14 and the upward restoring force of the elastic member 24, the main spool 2 is pushed to move downward, and the sum of the oil pressure of the control chamber 14 and the upward restoring force of the elastic member 24 is larger than the oil pressure of the control chamber 14, the main spool 2 moves upward.

In addition, the balance passage 15 includes a balance hole 151 and a balance chamber 152 opened in the valve body, the balance hole 151 communicates with the lower end of the balance chamber 152, and the balance hole 151 is located at the upper side of the control valve 3, and the balance chamber 152 is located at the upper side of the balance hole 151. Since the up-and-down movement frequency of the main valve changes to change the oil feeding amount of the control chamber 14, but since the oil feeding amount of the balance passage 15 is fixed, the oil pressure in the control chamber 14 changes, and the higher the frequency of the valve movement, the smaller the internal oil pressure of the control chamber 14, the larger the flow of the valve, and the smaller the damping of the shock absorber.

Referring to fig. 2, in addition, the control valve 3 includes a plurality of elastically deformable valve plates 31 stacked together, two ends of the control valve 3 are fixedly connected to the inner side of the valve body 1, and a sealing ring 4 for sealing between the control chamber 14 and the valve body 1 is further disposed at the upper end of the control valve 3. The valve plate of the control valve 3 is elastically deformed by the downward bending of the valve plate due to the oil pressure of the control chamber 14, so that the volume of the control chamber 14 is changed.

Different from the prior art, the frequency valve provided by the invention has the advantage that when the up-and-down reciprocating frequency of the valve changes, the liquid flow regulating effect is realized by the up-and-down movement of the main valve core.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.

Claims

1. The utility model provides a frequency valve, includes the valve body, be equipped with the runner of import, export and intercommunication both on the valve body, its characterized in that, have the control chamber that is located the runner below in the valve body, the control intracavity activity is provided with the main valve core, the flow between export and the runner is adjusted to the upward and downward movement of control chamber, set up the intercommunicating pore that makes runner and control chamber intercommunication on the main valve core, the lower part of control chamber still is equipped with the control valve block that changes control chamber volume, be equipped with the balance channel with control chamber lower part intercommunication on the valve body, the control chamber discharges fluid through the balance channel, the balance channel is including seting up the balance hole and balance chamber on the valve body, the balance hole communicates with the lower extreme of control chamber to the upside of control valve, the balance chamber is located the upside of balance hole.

2. The frequency valve of claim 1, wherein the main spool upper side and the valve body have grooves for balancing port section pressure.

3. The frequency valve according to claim 2, wherein the grooves are located at the upper end of the main valve core and the lower section of the valve body, and different section pressures of the valve port can be obtained by changing the shape and the size of the grooves.

4. A frequency valve as claimed in claim 3 wherein the left and right sides of the flow passage have bosses which engage the main spool and which engage the blocking portion to block communication between the outlet and the flow passage.

5. The frequency valve of claim 4, wherein the outer side of the main valve spool is tightly attached to the inner wall of the valve body, both of which form a reciprocating dynamic seal structure.

6. The frequency valve according to any one of claims 1-5, wherein an elastic member connected to the valve body is provided on an inner side of the main spool, and the elastic member provides an elastic force for upward movement of the main spool.

7. The frequency valve according to claim 1, wherein the control valve comprises a plurality of elastically deformable valve plates stacked together, two ends of the control valve are fixedly connected to the inner side of the valve body, and a sealing ring for sealing the control chamber from the valve body is further arranged at the upper end of the control valve.