Breathing valve body in spring brake chamber

Abstract

The utility model discloses a breather valve body in a spring brake chamber, and relates to the technical field of breather valves. The device comprises an air inlet cavity and an exhaust cavity, a first supporting frame is fixedly connected into the air inlet cavity, a telescopic rod is slidably connected into the first supporting frame, an air inlet valve element is fixedly connected to the top of the telescopic rod, an exhaust valve element is fixedly connected to the bottom of the telescopic rod, and a spring is arranged on the outer surface of the telescopic rod in a sleeved mode. An air inlet is fixedly connected to the top of the air inlet cavity, an exhaust groove is fixedly connected to the interior of the exhaust cavity, and an exhaust port is formed in the top of the exhaust groove. By arranging the air inlet valve element and the air outlet valve element, when the pressure in the air chamber rises, the pressure overcomes the elastic force of the spring to push the air outlet valve element to move upwards to open the air outlet, and when the pressure in the air chamber is too low to form vacuum, the external air pressure and the internal vacuum suction force of the air inlet cavity overcome the elastic force of the spring to open the air inlet. The problems that an existing breather valve is low in response speed and prone to being affected by airflow are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of breathing valve, especially relates to a spring brake air chamber breathing valve body. BACKGROUND

[0002] Breathing valve (also called pressure balance valve or breather valve) is a kind of device for adjusting the air pressure balance between inside and outside of closed container (such as gas tank, oil tank, spring brake air chamber etc.), in the automobile brake system, breathing valve is used to adjust the pressure change in brake air chamber, breathing valve is usually divided into one-way and two-way, one-way breathing valve only allows single air intake or exhaust work, cannot adjust air pressure bidirectionally, is not suitable for brake system, however, two-way breathing valve integrates exhaust and air intake channel, not only slow response speed, but also easily influenced by airflow, therefore, we propose a spring brake air chamber breathing valve body. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a spring brake air chamber breathing valve body, by setting up air inlet valve core and exhaust valve core, specifically is when the pressure inside the air chamber rises, pressure overcomes spring elasticity and pushes exhaust valve core and moves upwards, opens exhaust port, makes internal air to exhaust through exhaust groove, when the pressure inside the air chamber is too low and forms vacuum, external air pressure and air inlet cavity internal vacuum suction force overcome spring elasticity, makes air inlet valve core move downwards, opens air inlet and enters external air, solve the problem that the existing breathing valve response speed is slow and is easily influenced by airflow.

[0004] To solve the above technical problem, the utility model is realized through the following technical schemes:

[0005] The utility model discloses a spring brake air chamber breathing valve body, including air inlet cavity and exhaust cavity, air inlet cavity inside fixedly connected with support frame no.

[0006] Further, the air inlet valve core and the exhaust valve core are both arranged in a trapezoidal shape, the exhaust groove is extended to the outside through the left side of the exhaust cavity, the trapezoidal valve core is closely attached to the inclined surface of the valve port, and the sealing performance is enhanced; the exhaust groove is extended laterally to optimize the airflow path, reduce the exhaust resistance, and avoid the interference of gas backflow.

[0007] Further, the outer surface of the air inlet cavity is fixedly connected with a support frame two, and the top of the support frame two is fixedly connected with a valve cover, and the support frame two and the valve cover form a rigid support structure, so that the valve cover can prevent external rainwater from entering the inside of the valve body and improve the service life of the valve body.

[0008] Further, the outer surface of the air inlet cavity is provided with a dust cover, and the outer surface of the dust cover is fixedly connected with a spiral guide vane, which guides the external air to rotate in a spiral manner, accelerates the flow of the gas, and separates dust particles; the dust cover blocks large particle pollutants and reduces the risk of filter screen blockage.

[0009] Further, the bottom of the dust cover is fixedly connected with a clamping block, and the bottom of the air inlet cavity is fixedly connected with a connecting block one, and the clamping block and the connecting block one are matched to realize quick positioning and installation of the dust cover, without the need for additional tools, and the maintenance process is simplified.

[0010] Further, the top of the connecting block one is provided with a clamping groove, the outer surface of the clamping block is in contact with the inner wall of the connecting block one, and the clamping groove is in contact with the clamping block, so that the installation of the dust cover is stable, vibration-induced falling is avoided, and the stability of the dust cover is improved.

[0011] Further, the top of the exhaust cavity is fixedly connected with a connecting block two, the connecting block two and the connecting block one are fixedly connected through bolts, and the bottom of the exhaust cavity is fixedly connected with a base, and the modular bolt connection design facilitates quick disassembly and assembly of the air inlet cavity and the exhaust cavity, and the base facilitates connection with the brake air chamber.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model discloses a breathing valve, which comprises an air chamber, an air inlet cavity and an exhaust cavity, wherein the air inlet cavity is fixedly connected with an air inlet valve core, and the exhaust cavity is fixedly connected with an exhaust valve core.

[0014] 2. The utility model discloses a dust cover, which is installed by inserting the clamping block into the inner wall of the clamping groove and then rotating the dust cover to make the clamping block tightly contact with the clamping groove, thereby achieving quick installation and disassembly.

[0015] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is the whole structure schematic view of the present application;

[0018] Figure 2 It is the whole internal structure schematic view of the present application;

[0019] Figure 3 It is the air inlet valve core and exhaust valve core structure schematic view of the present application;

[0020] Figure 4 It is the air inlet cavity and exhaust cavity structure schematic view of the present application;

[0021] Figure 5 It is the dust cover structure schematic view of the present application.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, air inlet cavity; 11, support frame one; 111, telescopic rod; 112, air inlet valve core; 113, exhaust valve core; 114, spring; 12, air inlet; 13, support frame two; 131, valve cover; 14, dust cover; 141, spiral guide vane; 142, clamping block; 15, connecting block one; 151, clamping groove; 2, exhaust cavity; 21, connecting block two; 22, exhaust groove; 221, exhaust port; 23, base. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0025] Please refer to Figures 1-5As shown, the utility model is a kind of spring brake air chamber inside breathing valve body, including air inlet cavity 1 and exhaust cavity 2, air inlet cavity 1 inside fixedly connected with support frame one 11, support frame one 11 inside slidingly connected with telescopic link 111, telescopic link 111 top fixedly connected with air inlet valve core 112, telescopic link 111 bottom fixedly connected with exhaust valve core 113, telescopic link 111 outer surface is equipped with spring 114, air inlet cavity 1 top fixedly connected with air inlet 12, air inlet valve core 112 outer surface and air inlet 12 inner wall contact, exhaust cavity 2 inside fixedly connected with exhaust groove 22, exhaust groove 22 top is provided with exhaust port 221, exhaust valve core 113 outer surface and exhaust port 221 inner wall contact.

[0026] Air inlet valve core 112 and exhaust valve core 113 are all arranged in trapezoidal, exhaust groove 22 left side penetrates the inner wall of exhaust cavity 2 and extends to outside, by setting air inlet valve core 112 and exhaust valve core 113, specifically when the pressure inside the chamber rises, pressure overcomes the spring 114 elastic force and pushes exhaust valve core 113 to move upwards, opens exhaust port 221, makes internal air exhaust through exhaust groove 22, when the pressure inside the chamber is too low to form vacuum, external air pressure and the vacuum suction force inside air inlet cavity 1 overcome the spring 114 elastic force, so that air inlet valve core 112 moves downwards, opens air inlet 12 and enters external air, which avoids the influence of breathing valve by air flow and improves response speed.

[0027] Air inlet cavity 1 outer surface is fixedly connected with support frame two 13, and support frame two 13 top is fixedly connected with valve cover 131.

[0028] Air inlet cavity 1 outer surface is provided with dust cover 14, and the outer surface of dust cover 14 is fixedly connected with helical flow guide fin 141.

[0029] Dust cover 14 bottom is fixedly connected with clamping block 142, and air inlet cavity 1 bottom is fixedly connected with connecting block one 15.

[0030] Connecting block one 15 top is provided with clamping groove 151, and the outer surface of clamping block 142 is in contact with the inner wall of connecting block one 15, by setting dust cover 14, specifically during installation, clamping block 142 is inserted into the inner wall of clamping groove 151, then dust cover 14 is rotated to make clamping block 142 and clamping groove 151 closely contact to complete installation, dust cover 14 is clamped into clamping groove 151 to realize quick installation and disassembly, convenient cleaning and replacement, during the process of breathing valve inhaling, dust cover 14 filters external air, prevents dust and other pollutants from entering the inside of breathing valve, and keeps inside clean.

[0031] Exhaust cavity 2 top is fixedly connected with connecting block two 21, connecting block two 21 and connecting block one 15 are fixedly connected through bolt, and exhaust cavity 2 bottom is fixedly connected with base 23.

[0032] One specific application of the embodiment is: in use, first install the dust cover 14 on the top of the connecting block 15, make the clamping block 142 inserted into the inner wall of the clamping groove 151, then rotate the dust cover 14 to make the clamping block 142 tightly contact with the clamping groove 151 to complete the installation, use the bolt to fix the base 23 and the brake chamber, when the pressure in the chamber is normal, the elastic force of the spring 114 is greater than the pressure of the chamber to the air inlet valve core 112, so that the air inlet valve core 112 and the exhaust valve core 113 tightly adhere to the air inlet 12 and the exhaust port 221, the breathing valve is in the closed state, no gas flows, when the chamber is pressurized by the brake system, the temperature rises or the gas expands more than the external environment pressure, the internal pressure will overcome the elastic force of the spring 114 to push the exhaust valve core 113 to move upward, open the exhaust port 221, so that the internal air is discharged through the exhaust groove 22, when the chamber is released by the brake, the gas is cooled and shrinks or the rapid exhaust forms a vacuum, the external air pressure and the vacuum suction force of the air inlet cavity 1 overcome the elastic force of the spring 114, so that the air inlet valve core 112 moves downward, opens the air inlet 12 to make the external air enter, the outer surface of the air inlet cavity 1 is provided with the dust cover 14 to filter the external air, prevent dust and other pollutants from entering the inside of the breathing valve, the outer surface of the dust cover 14 is provided with the spiral guide vane 141, which forms a guide effect on the air to blow off the dust on the outer surface of the dust cover 14 during high-speed driving of the vehicle.

[0033] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A poppet brake chamber inlet valve body characterized by: Including air inlet cavity (1) and exhaust cavity (2), the air inlet cavity (1) is internally connected with support frame one (11), the support frame one (11) is internally connected with telescopic rod (111), the telescopic rod (111) top is fixedly connected with air inlet valve core (112), the telescopic rod (111) bottom is fixedly connected with exhaust valve core (113), the telescopic rod (111) outer surface is equipped with spring (114), the air inlet cavity (1) top is fixedly connected with air inlet (12), the air inlet valve core (112) outer surface is in contact with the inner wall of air inlet (12), the exhaust cavity (2) is internally connected with exhaust groove (22), the exhaust groove (22) top is provided with exhaust port (221), the exhaust valve core (113) outer surface is in contact with the inner wall of exhaust port (221).

2. A poppet valve body for a spring brake chamber according to claim 1, wherein, The air inlet valve core (112) and exhaust valve core (113) are both arranged in trapezoidal shape, and the exhaust groove (22) is through the inner wall of the exhaust cavity (2) and extends to the outside.

3. A poppet valve body for a spring brake chamber according to claim 2, wherein, The air inlet cavity (1) outer surface is fixedly connected with support frame two (13), and the support frame two (13) top is fixedly connected with valve cover (131).

4. A poppet brake chamber inner valve body according to claim 3, wherein, The air inlet cavity (1) outer surface is provided with dust cover (14), and the dust cover (14) outer surface is fixedly connected with helical guide vane (141).

5. A poppet brake chamber inlet valve body as claimed in claim 4, wherein, The dust cover (14) bottom is fixedly connected with clamping block (142), and the air inlet cavity (1) bottom is fixedly connected with connecting block one (15).

6. A poppet brake chamber inlet valve body according to claim 5, wherein, The connecting block one (15) top is provided with clamping groove (151), and the clamping block (142) outer surface is in contact with the inner wall of connecting block one (15).

7. A poppet brake chamber inlet valve body according to claim 6, wherein, The exhaust cavity (2) top is fixedly connected with connecting block two (21), and the connecting block two (21) and connecting block one (15) are fixedly connected by bolts, and the exhaust cavity (2) bottom is fixedly connected with base (23).

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