Gravity air pressure one-way valve and gas cylinder integrated with gravity air pressure one-way valve

Abstract

The utility model relates to a gravity air pressure one-way valve integrated in a gas cylinder, which can effectively improve the parking performance, expand the assembly space, reduce the abrasion of a tube bundle and improve the braking safety. Comprising a shell, a gravity ball, a sealing plectrum, a plectrum fixing pile and sealing rubber, the shell is provided with a horizontal cavity and a vertical cavity which are perpendicular to each other, a communicating hole is formed between the two cavities, and one end of the sealing plectrum is connected to the inner wall, around the communicating hole of the horizontal cavity, of the shell through the plectrum fixing pile and can cover the communicating hole; an air outlet is formed in the end, opposite to the communicating hole, of the horizontal cavity, the sealing shifting piece can rotate up and down along the shifting piece fixing pile, a vulcanized rubber ring is arranged at the position, making contact with the shell, of the sealing shifting piece, the gravity ball is installed in the vertical cavity, and the bottom of the vertical cavity is provided with a sealing rubber ring and an air inlet. The shell in the air outlet direction of the one-way valve is integrated on the air storage cylinder in a welded mode, the shell in the air inlet direction is located in the air storage cylinder, and the air inlet direction is parallel to the Z direction of the vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a one-way valve, concretely relates to a gravity pressure one-way valve and integrated gravity pressure one-way valve's gas cylinder, apply in commercial vehicle braking system. BACKGROUND

[0002] At present, the existing commercial vehicle parking brake system is a spring energy storage structure, and parking brake can be realized by deflating the parking gas chamber, and the parking brake can be released by inflating the parking gas chamber. During driving, if a damage and air leakage fault occurs between the four circuits of the parking system and the parking gas cylinder, the parking system will leak, and the vehicle will be braked, so that the vehicle cannot normally drive. The one-way valve plays a pressure maintaining function.

[0003] With the development of the automobile industry, the state pays more and more attention to road traffic safety, and the active safety configuration is matched with heavy trucks more and more highly. The number of chassis parts increases, and the chassis layout space becomes more and more compact.

[0004] The existing one-way valve is basically installed in the parking gas cylinder outlet or the pipe bundle between the parking gas cylinder outlet and the hand valve. Due to the increasing configuration of the chassis, the assembly space is severely limited, the one-way valve installed in the parking gas cylinder outlet occupies a large space, which is not conducive to the overall layout, and the one-way valve has no quick plug structure, the valve body is installed on the gas cylinder through the thrust ring, the sealing ring and the compression nut, which has the risk of air leakage. The one-way valve installed in the pipe bundle between the parking gas cylinder outlet and the hand valve is limited by the inner diameter of the pipe bundle, which affects the parking performance. Moreover, the one-way valve is easy to wear the surrounding pipe bundle, which affects the driving safety. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a one-way valve integrated in a gas storage cylinder, which improves parking performance, expands assembly space, reduces pipe bundle wear and improves braking safety. The one-way valve is integrated in the parking gas cylinder and designed with the thread hole of the parking gas cylinder. The one-way valve can effectively improve parking performance, expand assembly space, reduce pipe bundle wear and improve braking safety.

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model discloses a gravity gas pressure check valve integrated in the gas cylinder, including casing 1, gravity ball 2, sealing paddle 3, paddle fixed stake 4 and sealing rubber 5, casing 1 is equipped with horizontal and vertical two perpendicular cavities, and there is the communicating hole between two cavities, and sealing paddle 3 one end is connected in the casing 1 inner wall around the horizontal cavity communicating hole and can cover the communicating hole, and the horizontal cavity communicating hole opposite end opens the gas outlet, and sealing paddle 3 can rotate up and down along paddle fixed stake 4, and the position of sealing paddle 3 and casing 1 contact has vulcanized rubber ring, and gravity ball 2 is installed in vertical cavity, and the bottom of vertical cavity is equipped with sealing rubber ring 5 and opens the gas inlet, and the ball diameter of gravity ball 2 is greater than the diameter of gas inlet.

[0008] Paddle fixed stake 4 is fixed in the inner wall of casing 1 by welding.

[0009] The casing of check valve gas outlet direction is integrated on the gas cylinder by welding, and the casing of gas inlet direction is located in the gas cylinder, and the direction of gas inlet is parallel to the Z direction of vehicle.

[0010] The utility model can effectively improve the parking performance, expand the assembly space, reduce the tube bundle abrasion and improve the brake safety. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the check valve schematic view of the utility model,

[0012] Figure 2 It is the gas cylinder schematic view of the utility model integrated gravity gas pressure check valve,

[0013] Figure 3 It is the use state drawing of the utility model. DETAILED DESCRIPTION

[0014] The check valve of the utility model adopts machining, laser cutting, welding and other processes, and the valve assembly is mainly composed of casing 1, gravity ball 2, sealing paddle 3, paddle fixed stake 4 and sealing rubber 5. Figure 1 As shown below.

[0015] As shown in Figure 2 , 3 , the casing of check valve gas outlet direction is integrated on the gas cylinder by welding. The direction of gas inlet is parallel to the Z direction of vehicle. The surface of gravity ball 2 in the casing 1 of check valve is smooth, can slide up and down, and the activity range is between the bottom end and top end of casing, is driven by gas pressure. There is vulcanized rubber ring at the position of sealing paddle 3 and casing 1 contact. Sealing paddle 3 is fixed in paddle fixed stake 4. Paddle fixed stake 4 is fixed in the inner wall of casing 1 by welding.

[0016] When the air cylinder is inflated, the air pressure in the air cylinder increases, the gas enters the air inlet of the one-way valve, and pushes the gravity ball 2 from the bottom end to the top end of the shell 1. At the same time, it pushes away the sealing paddle 3, and the gas is discharged from the air outlet of the one-way valve to supply air to the parking brake system.

[0017] When the air pressure in the air cylinder and the air pressure at the air outlet of the one-way valve reach equilibrium, the sealing paddle 3 is closed under the influence of gravity, and the gravity ball 2 falls on the sealing rubber ring 5 at the bottom end of the shell 1 at the top end.

[0018] When the air pressure in the air cylinder decreases due to failure or other reasons, the air pressure at the air outlet of the one-way valve is relatively high, causing gas backflow. The backflow gas contacts the sealing paddle 3, which exerts a force on the sealing paddle 3 in the opposite direction of the gas outlet, causing the vulcanized rubber ring on the sealing paddle 3 to tightly adhere to the shell for gas sealing. When the sealing paddle 3 is damaged or the sealing performance is reduced, high-pressure gas flows through the shell 1 to the bottom end of the shell, pressing against the gravity ball 2. The gravity ball presses the sealing rubber ring 5 at the bottom end of the shell 1, achieving a double-sealing effect.

Claims

1. A gravity pressure one-way valve integrated in a gas cylinder, characterized by: It includes a shell, a gravity ball, a sealing paddle, a paddle fixing pile and a sealing rubber. The shell is provided with two mutually perpendicular cavities, one horizontal and one vertical, with a connecting hole between the two cavities. One end of the sealing paddle is connected to the inner wall of the shell around the connecting hole of the horizontal cavity through the paddle fixing pile and can cover the connecting hole. An air outlet is provided at the opposite end of the connecting hole of the horizontal cavity. The sealing paddle can be rotated up and down along the paddle fixing pile. There is a vulcanized rubber ring at the position where the sealing paddle contacts the shell. The gravity ball is installed in the vertical cavity. The bottom of the vertical cavity is equipped with a sealing rubber ring and an air inlet. The ball diameter of the gravity ball is larger than the diameter of the air inlet.

2. The gravity pressure one-way valve integrated in a gas cylinder according to claim 1, characterized in that: The paddle fixing pile is fixed to the inner wall of the shell by welding.

3. A gas cylinder with an integrated gravity pressure check valve, characterized by: The shell of the one-way valve in the direction of the air outlet is integrated on the air reservoir by welding, and the shell in the direction of the air inlet is located inside the air reservoir, and the direction of the air inlet is parallel to the Z direction of the vehicle.

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