CN211995533U

CN211995533U - Novel gas circuit optimization relay valve

Info

Publication number: CN211995533U
Application number: CN202020282378.6U
Authority: CN
Inventors: 朱建松
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-27
Filing date: 2020-03-10
Publication date: 2020-11-24
Anticipated expiration: 2030-03-10

Abstract

The utility model relates to a novel gas circuit optimization relay valve belongs to auto-parts technical field, and it has solved the not high problem of prior art relay valve braking efficiency. This novel gas circuit optimization relay valve includes valve body and lower valve body, be equipped with the control mouth that is linked together with the control air supply on the valve body, be equipped with the air inlet that is linked together with the air supply source on the valve body down, the air supply mouth that is connected with the gas receiver, the gas outlet that links to each other with the brake wheel cylinder and with the communicating gas vent of external world, be equipped with the piston in the valve body down, lower valve body includes inner chamber and exocoel, the air inlet, the air supply mouth communicates with each other with the inner chamber, the gas outlet communicates with each other with the exocoel, keep apart through the valve between inner chamber and the exocoel, upward be equipped with the communicating piston of control mouth between valve body and the lower valve body, the piston is connected with the valve and steerable valve up. This novel gas circuit optimization relay valve has adjustable gas outlet atmospheric pressure, and braking effect is good, long service life's advantage.

Description

Novel gas circuit optimization relay valve

Technical Field

The utility model belongs to the technical field of auto-parts, a auto brake accessory, especially a novel gas circuit optimization relay valve are related to.

Background

The relay valve belongs to a part of an automobile air brake system, the relay valve plays a role in shortening reaction time and pressure building time in a brake system of a truck, the relay valve is used at the tail end of a long pipeline, compressed air in an air storage cylinder can be quickly filled in a brake air chamber, the functions of work braking, air inflation, emergency braking and air exhaust of the air storage cylinder are realized, and the conventional three-axle relay valve is widely used in the automobile brake system, and is particularly more commonly used in a trailer or a semitrailer brake system. When the vehicle is braked, compressed air passes through the relay valve and enters the brake cylinder from an air outlet of the relay valve through a brake pipeline to brake the travelling crane; when the brake is released, the compressed air in the brake cylinder must pass through the brake pipe, return to the relay valve through the air outlet and be exhausted through the air outlet of the relay valve.

Because the positions of the brake branch pumps of the middle and rear axles of the three-axle vehicle, which are far away from the position of the brake master pump, are long, and the pipelines are long, when the three-axle vehicle brakes, the braking time of the middle and rear axles and the front axle has a certain time difference, the vehicle brakes unstably, and the condition that the abrasion of a front axle braking device is aggravated is caused; when the brake is released, the compressed air in the brake cylinders on the middle and rear axles cannot be discharged in time, so that the time delay of the release of the whole brake is caused, the driving speed is influenced, the oil consumption is increased, the abrasion of the brake shoes is aggravated, the hub is scalded abnormally, the brake shoes are easy to carbonize, the service life of a brake system is directly influenced, and even a driving accident may be caused.

The three-axle relay valve on the market mostly uses the valve gap pressure boost or the purpose that the valve body gas outlet realized the pressure boost, and the braking of three-axle relay valve control car is nimble convenient, but because the vehicle is when different loads and the road conditions of traveling, the requirement to brake braking force is different, and current relay valve can't carry out pressure control according to the user demand of difference or the adjusting method is single, when controlling brake braking, has the car and lightly stops not flexible, and the problem that the heavy truck degree of sensitiveness is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a novel gas circuit optimization relay valve of adjustable venthole atmospheric pressure.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a novel gas circuit optimization relay valve, includes valve body and lower valve body, last valve body on be equipped with the control mouth that is linked together with the control air supply, lower valve body on be equipped with the air inlet that is linked together with the air supply, the air supply mouth that is connected with the gas receiver, the gas outlet that links to each other with the brake wheel cylinder and with the communicating gas vent of external world, lower valve body in be equipped with the piston, lower valve body include inner chamber and exocoel, air inlet, air supply mouth and inner chamber communicate with each other, gas outlet and exocoel communicate with each other, inner chamber and exocoel between keep apart through the valve, last valve body and lower valve body between be equipped with the communicating piston of control mouth, piston and valve be connected and the upper and lower motion of steerable valve, its characterized in that, lower valve body on be equipped with the atmospheric.

In foretell relay valve is optimized to novel gas circuit, air pressure regulating valve pass through bolted connection's mode demountable installation on valve body down, air pressure regulating valve include the adjusting valve body, adjusting valve body top and exocoel intercommunication, the below communicates with each other with piston place cavity, the adjusting valve body on be equipped with check valve more before, check valve more before be equipped with the spring, the adjusting valve body on be equipped with the adjusting bolt of adjusting spring pressure size.

The adjusting bolt adjusts the pressure of the spring, so that the pressure difference of the opening of the check valve is adjusted, when the pressure in the control port is too large, emergency braking is determined, at the moment, the piston pushes the valve to have a slow air inlet speed, the pressure in the piston cavity is larger than the outer cavity of the valve body, the pressure in the piston cavity overcomes the spring pressure of the check valve, gas enters the outer cavity of the valve body through the adjusting valve in advance, the purpose of inflating the gas outlet in advance is achieved, the emergency braking speed is increased, and the emergency braking opening efficiency is improved.

In foretell novel gas circuit optimize relay valve, the gas vent on be equipped with the valve gap, the valve gap pass through the snap ring joint under on the valve body.

In foretell relay valve is optimized to novel gas circuit, the snap ring be the cyclic annular snap ring of opening, the snap ring opening part be equipped with bellied installation department. The snap ring can be conveniently disassembled and assembled by utilizing the installation part.

In the novel gas circuit optimization relay valve, the middle part of the piston is provided with an exhaust channel communicated with the exhaust port.

In foretell novel gas circuit optimization relay valve, the gas outlet including set up in four bottom gas outlets of lower valve body bottom and set up in the lateral part gas outlet of lower valve body both sides, a lateral part gas outlet corresponds with two bottom gas outlets. The caliber of the air outlet at the side part is larger than that of the air outlet at the bottom part, so that the engineering vehicle can be conveniently and nondestructively installed.

In the novel gas circuit optimization relay valve, the gas inlet comprises a side gas inlet and a bottom gas inlet, and the side gas inlet is communicated with the bottom gas inlet.

In foretell novel gas circuit optimize relay valve, the air supply mouth be three and all set up in the valve body lateral part down.

In foretell relay valve is optimized to novel gas circuit, the air supply mouth on be equipped with the check valve that admits air, lower valve body bottom still be equipped with the check valve passageway that admits air with the air supply mouth intercommunication, the check valve passageway top of admitting air be equipped with the end cap, the check valve passageway of admitting air in be equipped with the aluminum pipe. By utilizing the design of the aluminum pipe and the plug, zero pressure difference is always kept on two sides of the one-way valve, and when the pressure in the air storage cylinder is smaller than the pressure of the air inlet, the air inlet one-way valve is opened under the action of air pressure, and the air inlet inflates the air storage cylinder; when the air pressure in the air storage cylinder is the same as the air pressure of the air inlet, the one-way valve is closed, and the air storage cylinder is stopped from being inflated.

In the novel gas circuit optimization relay valve, the lower valve body is internally provided with a separation disc for separating the cavity where the piston is located from the outer cavity, and the separation disc is connected with the inner layer of the lower valve body in a sealing manner.

In foretell novel gas circuit optimization relay valve, the piston include the diaphragm, skin, middle level, inlayer and body, the body be connected with the valve, skin, middle level hug closely different steps of lower valve body inner wall respectively, inlayer hug closely with the separation disc, skin, middle level and inlayer be equipped with external seal circle, well sealing washer and inner seal circle respectively.

The upper valve body is provided with a control port, and the opening and closing of the brake are controlled by the control port. Under the normal operating condition, inflate in the lower valve body by the air inlet, gas passes through the inner chamber and is connected with the air feed mouth to fill up gas in the gas receiver. Because the air supply port is provided with the air inlet one-way valve, when the pressure in the air storage cylinder is smaller than the pressure of the air inlet, the air inlet one-way valve is opened under the action of air pressure, and the air storage cylinder is inflated by the air inlet; when the air pressure in the air storage cylinder is the same as the air pressure of the air inlet, the one-way valve is closed, and the air storage cylinder is stopped from being inflated.

When the multi-bridge synchronous brake is needed, the brake is stepped down, the air in the control port is inflated, the piston is driven to move downwards, so that the valve is driven to move downwards, the inner cavity is communicated with the outer cavity, the air in the air inlet and the air supply port are communicated with the outer cavity through the valve, the air outlet is exhausted, the air outlet is respectively connected with the brake slave cylinders, and therefore the plurality of brake slave cylinders are driven to work simultaneously, and the multi-bridge synchronous brake is achieved;

when the brakes are released, the inflation is stopped in the control ports, the air pressure of each brake cylinder is recovered, the piston returns under the action of the pressure of the outer cavity, the valve is closed, the air pressure of the outer cavity is exhausted from the exhaust port through the exhaust channel in the middle of the piston, the effect of quick unloading is realized, the valve cover is arranged at the exhaust port, the valve cover can be subjected to air impact in the exhaust process, the valve cover is limited under the action of the clamping ring, and the valve cover is prevented from falling off.

The brake is stepped on under the action that the air storage cylinder continuously stores air and the air inlet admits air, so that the air in the air storage cylinder can quickly act, the purposes of quick brake effect and timely brake are achieved, and the quick force unloading after the brake is loosened can be realized under the exhaust action of the exhaust port, so that the abrasion of the brake pad is reduced.

Compared with the prior art, this novel gas circuit optimization relay valve has following advantage:

1. the air pressure regulating valve is detachably connected, so that the air pressure regulating valve is convenient to disassemble, assemble and replace;

2. the air outlet is arranged at the top and the side, and the air outlet pressure of the brake cylinder can be adjusted according to different bridges with different calibers;

3. the number of the air supply ports is three, and the air supply ports can be connected with a plurality of air storage cylinders, so that the air storage pressure is increased, and the braking effect is improved; the exhaust port is provided with a snap ring to limit the valve cover, so that the valve cover is prevented from being separated, and the valve cover is convenient to mount;

4. the air supply port is also provided with an aluminum pipe to ensure zero pressure difference between the air cylinder and the air inlet;

5. three sealing rings are arranged on the piston, so that the sealing performance is improved, and the function of going ahead is improved;

6. the piston and the valve are positioned up and down, and the spring is not needed to reset, so that the service life of the piston is prolonged.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic cross-sectional view of another aspect of the present invention.

In the figure, 1, an upper valve body; 11. a control port; 2. a lower valve body; 21. a valve cover; 22. a snap ring; 23. a separation disc; 24. an inner cavity; 25. an outer cavity; 3. an air pressure regulating valve; 31. a regulating valve body; 32. a forward one-way valve; 33. a spring; 34. adjusting the bolt; 4. an air inlet; 41. an air inlet check valve; 42. an air inlet check valve passage; 5. an air supply port; 6. an exhaust port; 7. an air outlet; 8. a piston; 81. an outer layer; 82. a middle layer; 83. an inner layer; 84. a body; 9. and (4) a valve.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the novel gas circuit optimization relay valve comprises an upper valve body 1 and a lower valve body 2, wherein the upper valve body 1 is provided with a control port 11 communicated with a control gas source, the lower valve body 2 is provided with a gas inlet 4 communicated with the gas supply source and a gas supply port 5 connected with a gas storage cylinder, an air outlet 7 connected with a brake cylinder and an air outlet 6 communicated with the outside are arranged in the lower valve body 2, the lower valve body 2 comprises an inner cavity 24 and an outer cavity 25, an air inlet 4 and an air supply port 5 are communicated with the inner cavity 24, the air outlet 7 is communicated with the outer cavity 25, the inner cavity 24 is isolated from the outer cavity 25 through a valve, the piston 8 communicated with a control port 11 is arranged between the upper valve body 1 and the lower valve body 2, the piston 8 is connected with the valve and can control the valve to move up and down, a detachably connected air pressure regulating valve 3 is arranged on the lower valve body 2, a valve cover 21 is arranged on the air outlet 6, and the valve cover 21 is clamped on the lower. The air pressure regulating valve 3 is detachably mounted on the lower valve body 2 in a bolt connection mode, the air pressure regulating valve 3 comprises a regulating valve body 31, the upper portion of the regulating valve body 31 is communicated with the outer cavity 25, the lower portion of the regulating valve body 31 is communicated with the cavity where the piston 8 is located, a forward one-way valve 32 is arranged on the regulating valve body 31, a spring 33 is arranged on the forward one-way valve 32, and a regulating bolt 34 for regulating the pressure of the spring 33 is arranged on the regulating valve body 31.

The adjusting bolt 34 adjusts the pressure of the spring 33, so as to adjust the pressure difference of the check valve, when the pressure in the control port 11 is too large, emergency braking is determined, at the moment, the piston 8 pushes the valve to have a slow air inlet speed, the pressure in the cavity of the piston 8 is greater than that in the outer cavity 25 of the valve body, the pressure in the cavity of the piston 8 overcomes the pressure of the spring 33 of the check valve, so that the air enters the outer cavity 25 of the valve body through the adjusting valve body 31 in advance, the purpose of inflating the air outlet 7 in advance is achieved, the emergency braking speed is increased, and the emergency braking opening efficiency.

The utility model discloses in, snap ring 22 be the cyclic annular snap ring 22 of opening, snap ring 22 opening part be equipped with bellied installation department. The installation part can be used for conveniently dismounting the snap ring 22. the middle part of the piston 8 is provided with an exhaust channel communicated with the exhaust port 6. The gas outlets 7 comprise four bottom gas outlets 7 arranged at the bottom of the lower valve body 2 and side gas outlets 7 arranged at two sides of the lower valve body 2, and one side gas outlet 7 corresponds to two bottom gas outlets 7. The air inlet 4 comprises a side air inlet 4 and a bottom air inlet 4, and the side air inlet 4 is communicated with the bottom air inlet 4. The number of the air supply ports 5 is three and the three air supply ports are all arranged on the side part of the lower valve body 2. The air supply port 5 is provided with an air inlet one-way valve 41, the bottom of the lower valve body 2 is also provided with an air inlet one-way valve 41 channel communicated with the air supply port 5, the top of the air inlet one-way valve 41 channel is provided with a plug, and an aluminum pipe is arranged in the air inlet one-way valve 41 channel. When the pressure in the air storage cylinder is lower than the pressure of the air inlet 4, the air inlet one-way valve 41 is opened under the action of air pressure, and the air storage cylinder is inflated from the air inlet 4; when the air pressure in the air storage cylinder is the same as the air pressure of the air inlet 4, the one-way valve is closed, and the air storage cylinder is stopped from being inflated.

The utility model discloses in, lower valve body 2 in be equipped with the separation disc 23 with piston 8 place cavity and exocoel 25 isolation, separation disc 23 and lower valve body 2 inlayer 83 sealing connection. The piston 8 comprises a diaphragm, an outer layer 81, a middle layer 82, an inner layer 83 and a body 84, the body 84 is connected with the valve, the outer layer 81 and the middle layer 82 are respectively tightly attached to different steps of the inner wall of the lower valve body 2, the inner layer 83 is tightly attached to the partition disc 23, and the outer layer 81, the middle layer 82 and the inner layer 83 are respectively provided with an outer sealing ring, a middle sealing ring and an inner sealing ring.

The relay valve has the following use process: in a normal working state, the air inlet 4 inflates air into the lower valve body 2, and the air is connected with the air supply port 5 through the inner cavity 24, so that the air storage cylinder is filled with the air. Because the air supply port 5 is provided with the air inlet one-way valve 41, when the pressure in the air storage cylinder is smaller than the pressure of the air inlet 4, the air inlet one-way valve 41 is opened under the action of air pressure, and the air storage cylinder is inflated by the air inlet 4; when the air pressure in the air storage cylinder is the same as the air pressure of the air inlet 4, the one-way valve is closed, and the air storage cylinder is stopped from being inflated.

When the brake is needed, the brake is stepped, the control port 11 is inflated, the piston 8 is driven to move downwards, so that the valve is driven to move downwards, the inner cavity 24 is communicated with the outer cavity 25, the air in the air inlet 4 and the air supply port 5 is communicated with the outer cavity 25 through the valve by the inner cavity 24, so that the air outlet 7 is exhausted, the air outlet 7 is respectively connected with the brake slave cylinders, and therefore the brake slave cylinders are driven to work at the same time, and the multi-bridge synchronous brake effect is achieved;

when the brakes are released, the control port 11 stops inflating, the air pressure of each brake cylinder is recovered, the piston 8 returns under the action of the pressure of the outer cavity 25, the valve is closed, the air pressure of the outer cavity 25 is exhausted from the exhaust port 6 through an exhaust passage in the middle of the piston 8, the effect of quick unloading is realized, the valve cover 21 is arranged at the exhaust port 6, gas impact can be generated on the valve cover 21 in the exhaust process, the valve cover 21 is limited under the action of the clamping ring 22, and the valve cover 21 is prevented from falling off.

The brake is stepped on under the action that the air storage cylinder continuously stores air and the air inlet 4 admits air, so that the air in the air storage cylinder can rapidly act, the purposes of rapid brake effect and timely brake are achieved, and the rapid force unloading after the brake is loosened can be realized under the exhaust action of the exhaust port 6, so that the abrasion of the brake pad is reduced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a novel gas circuit optimization relay valve, includes valve body (1) and lower valve body (2), last valve body (1) on be equipped with control mouth (11) that are linked together with the control air supply, lower valve body (2) on be equipped with air inlet (4) that are linked together with the air supply, air supply mouth (5) that are connected with the gas receiver, gas outlet (7) that link to each other with the brake wheel cylinder and with external communicating gas vent (6), lower valve body (2) in be equipped with piston (8), lower valve body (2) include inner chamber (24) and exocoel (25), air inlet (4), air supply mouth (5) and inner chamber (24) communicate with each other, gas outlet (7) and exocoel (25) communicate with each other, inner chamber (24) and exocoel (25) between keep apart through the valve, last valve body (1) and lower valve body (2) between be equipped with control mouth (11) communicating piston (8), piston (8) be connected and steerable valve up-and-down motion with the valve, its characterized in that, lower valve body (2) on be equipped with can dismantle the atmospheric pressure governing valve (3) of connection.

2. The novel gas circuit optimization relay valve according to claim 1, characterized in that the gas pressure regulating valve (3) is detachably mounted on the lower valve body (2) in a bolt connection manner, the gas pressure regulating valve (3) comprises a regulating valve body (31), the upper part of the regulating valve body (31) is communicated with the outer cavity (25), the lower part of the regulating valve body is communicated with the cavity where the piston (8) is located, the regulating valve body (31) is provided with a forward check valve (32), the forward check valve (32) is provided with a spring (33), and the regulating valve body (31) is provided with a regulating bolt (34) for regulating the pressure of the spring (33).

3. The novel gas circuit optimizing relay valve as claimed in claim 1, wherein a valve cover (21) is arranged on the gas outlet (6), the valve cover (21) is clamped on the lower valve body (2) through a clamping ring (22), the clamping ring (22) is an open annular clamping ring (22), and a raised mounting portion is arranged at an opening of the clamping ring (22).

4. A novel gas circuit optimizing relay valve according to claim 1, 2 or 3, characterized in that the middle of the piston (8) is provided with an exhaust passage communicated with the exhaust port (6).

5. The novel gas circuit optimization relay valve according to claim 1, 2 or 3, wherein the gas outlet (7) comprises four bottom gas outlets (7) arranged at the bottom of the lower valve body (2) and side gas outlets (7) arranged at two sides of the lower valve body (2), and one side gas outlet (7) corresponds to two bottom gas outlets (7).

6. A novel gas circuit optimizing relay valve according to claim 1, 2 or 3, characterized in that said gas inlet (4) comprises a side gas inlet (4) and a bottom gas inlet (4), said side gas inlet (4) being in communication with said bottom gas inlet (4).

7. A novel gas circuit optimizing relay valve according to claim 1, 2 or 3, characterized in that, the number of the gas supply ports (5) is three and all arranged at the side of the lower valve body (2).

8. The novel gas circuit optimizing relay valve as claimed in claim 1, 2 or 3, wherein the gas supply port (5) is provided with a gas inlet check valve (41), the bottom of the lower valve body (2) is further provided with a gas inlet check valve (41) channel communicated with the gas supply port (5), the top of the gas inlet check valve (41) channel is provided with a plug, and an aluminum pipe is arranged in the gas inlet check valve (41) channel.

9. A novel gas circuit optimizing relay valve according to claim 1, 2 or 3, characterized in that a separation disc (23) for separating the cavity where the piston (8) is located from the outer cavity (25) is arranged in the lower valve body (2), and the separation disc (23) is hermetically connected with the inner layer (83) of the lower valve body (2).

10. The novel gas circuit optimizing relay valve as claimed in claim 9, wherein the piston (8) comprises a diaphragm, an outer layer (81), a middle layer (82), an inner layer (83) and a body (84), the body (84) is connected with a valve, the outer layer (81) and the middle layer (82) are respectively attached to different steps of the inner wall of the lower valve body (2), the inner layer (83) is attached to the partition disc (23), and the outer layer (81), the middle layer (82) and the inner layer (83) are respectively provided with an outer sealing ring, a middle sealing ring and an inner sealing ring.