Automatic drainage device of brake valve

Abstract

The utility model relates to an automatic drainage device of a brake valve, which comprises a shell and a plugging core body, the shell is cylindrical and hollow, the plugging core body is embedded in the shell, the outer wall of the plugging core body is tightly attached to the inner wall of the shell in a sliding manner, and a clamping cavity is arranged above the top end of the plugging core body in the shell. A brake gas inlet communicated with the clamping cavity is formed in the top of the shell, a gas guiding opening is formed in one side of the shell, a discharging opening is formed in the other side of the shell, and a first communicating hole channel used for communicating the gas guiding opening with the discharging opening is formed in one side in the blocking core body. During non-braking work, it can be guaranteed that the brake valve is directly communicated with the external atmosphere, condensation of water vapor is reduced, after braking is finished, the brake valve can be communicated with the outside through the first communication hole channel, and therefore residual gas and water in the brake valve are automatically discharged through the gas guide opening, the first communication hole channel and the discharging opening in sequence; the automatic drainage of the brake valve can be realized under the condition that the brake valve is not required to be disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of brake valves, in particular to an automatic drainage device for a brake valve. Background Technique

[0002] Most semi-trailer vehicles use pneumatic brake valves to control vehicle braking. A pneumatic brake valve is a device controlled by air pressure. It controls the operation of the braking system through the pressure generated by the air source, and can respond quickly and provide a stable braking effect.

[0003] Due to the closed structure of traditional brake valves, there has long been a problem of internal water accumulation during the use of brake valves. Especially in winter when the temperature is relatively low, the accumulated water is prone to freezing, resulting in the vehicle being unable to operate. Traditional pneumatic brake valves do not have the effect of automatic drainage, and it is necessary to disassemble the brake valve irregularly to remove the internal accumulated water, which causes inconvenience to normal driving. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic drainage device for a brake valve, which effectively solves the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions.

[0006] An automatic drainage device for a brake valve includes a housing and a plugging core. The housing is in a cylindrical hollow shape, and the plugging core is embedded in the housing. The outer wall of the plugging core is in close sliding fit with the inner wall of the housing. There is a clamping cavity above the top of the plugging core in the housing. The top of the housing has a brake gas inlet communicating with the clamping cavity. One side of the housing has a gas guiding port, and the other side has a discharge port. One side in the plugging core is provided with a first communication channel for communicating the gas guiding port and the discharge port, and the other side is provided with a second communication channel for communicating the clamping cavity and the gas guiding port. The bottom end of the housing is provided with a driving mechanism, and the driving mechanism is used to drive the plugging core to rotate and adjust in the housing to realize the position switching of the first communication channel and the second communication channel.

[0007] Further, the first communication channel is arranged in a Z-shaped structure. The first port A and the second port A of the first communication channel are respectively located on both sides of the outer peripheral wall of the plugging core. When the first port A is aligned and communicated with the gas guiding port, the second port A is also aligned and communicated with the discharge port.

[0008] Further, the second communication channel is arranged in an L-shaped structure. The first port B of the second communication channel is located at the top end of the plugging core, and the second port B of the second communication channel is located on the outer peripheral wall of the plugging core and is arranged at the same height as the gas guiding port.

[0009] Further, a number of spherical cavities are arranged in an annular array around the axis on the inner wall of the housing and below the discharge port. Each spherical cavity is fitted with a ball. An annular groove is provided on the outer wall of the plug core body, and each ball is snap-fitted into the annular groove.

[0010] Further, the driving mechanism includes a driving motor and a connecting shaft. The connecting shaft is rotatably installed at the bottom end of the housing and extends vertically upward into the housing, and is fixedly connected to the bottom end of the plug core body. The driving motor is installed at the bottom end of the housing, and the output shaft of the driving motor is fixedly connected to the bottom end of the connecting shaft.

[0011] Further, two brackets are symmetrically fixed on both sides of the driving motor at the bottom end of the housing. Both brackets are in an L-shaped layout, and the other ends of the two brackets are respectively fixed to both sides of the driving motor.

[0012] Further, the driving motor is a waterproof motor, and the driving motor is electrically connected to the control circuit of the brake valve.

[0013] Further, the air guide port is arranged higher than the discharge port.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows.

[0015] 1. When the present utility model is in non-braking operation, it can ensure that the brake valve is directly communicated with the external atmosphere, reducing the condensation of water vapor. After braking, the brake valve can be communicated with the outside through the first communication channel, so that the remaining gas and water in the brake valve are automatically discharged through the air guide port, the first communication channel and the discharge port in sequence, realizing the automatic drainage of the brake valve without disassembly.

[0016] 2. The automatic drainage device provided by the present utility model serves both as a conveying component for braking gas and as an exhaust and drainage component for the brake valve, killing two birds with one stone. The design of integrating the two functions makes the overall structure simpler and reduces the use cost.

[0017] 3. The present utility model uses the driving motor to drive the plug core body to rotate and change positions, with precise control and fast response speed. Combined with the assisting rotation effect of the balls on the plug core body, it can ensure the long-term stable operation of the drainage device and the brake valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is one of the three-dimensional schematic diagrams of the overall structure of the present utility model;

[0019] Figure 2 is the second three-dimensional schematic diagram of the overall structure of the present utility model;

[0020] Figure 3 is the sectional structure schematic diagram of the present utility model;

[0021] Figure 4 is Figure 3 An enlarged schematic view of the structure at position A in

[0022] In the figure: 1. Housing; 101. Spherical cavity; 102. Ball; 11. Brake gas inlet; 12. Air guide port; 13. Discharge port; 14. Clamping cavity; 2. Sealing core; 201. Annular groove; 21. First communication channel; 211. First port A; 212. Second port A; 22. Second communication channel; 221. First port B; 222. Second port B; 3. Driving mechanism; 31. Driving motor; 32. Connecting shaft; 33. Bracket. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connection", "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.

[0025] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0026] Please refer to Figures 1-4, an automatic drainage device for a brake valve provided by the utility model, includes a housing 1 and a plugging core 2. The housing 1 is in a cylindrical hollow shape, and the plugging core 2 is embedded in the housing 1. The outer wall of the plugging core 2 is closely and slidably fitted with the inner wall of the housing 1. There is a clamping cavity 14 above the top of the plugging core 2 in the housing 1. The top of the housing 1 has a brake gas inlet 11 communicating with the clamping cavity 14. One side of the housing 1 has an air guide port 12, and the other side has a discharge port 13. On one side inside the plugging core 2, there is a first communication channel 21 for communicating the air guide port 12 and the discharge port 13, and on the other side, there is a second communication channel 22 for communicating the clamping cavity 14 and the air guide port 12. At the bottom end of the housing 1, there is a driving mechanism 3, and the driving mechanism 3 is used to drive the plugging core 2 to rotate and adjust in the housing 1 to realize the position switching of the first communication channel 21 and the second communication channel 22. The plugging core 2 has the ability to rotate in the housing 1.

[0027] Specifically, the first communication channel 21 is arranged in a Z-shaped structure. The first port A211 and the second port A212 of the first communication channel 21 are respectively located on both sides of the outer peripheral wall of the plugging core 2. When the first port A211 is aligned and communicated with the air guide port 12, the second port A212 is also aligned and communicated with the discharge port 13.

[0028] Specifically, the second communication channel 22 is arranged in an L-shaped structure. The first port B221 of the second communication channel 22 is located at the top end of the plugging core 2, and the second port B222 of the second communication channel 22 is located on the outer peripheral wall of the plugging core 2 and is arranged at the same height as the air guide port 12.

[0029] When the device is in use, the air guide port 12 is connected to the intake and exhaust port of the brake valve. In the free state without braking, the first port A211 is aligned and communicated with the air guide port 12, and the second port A212 is aligned and communicated with the discharge port 13. The inside of the brake valve is directly communicated with the outside through the conduction cavity formed by the air guide port 12, the first communication channel 21 and the discharge port 13, which is beneficial to the discharge of water and the dissipation of moisture.

[0030] During braking, the driving mechanism 3 works to drive the plugging core 2 to rotate half a week, so that the second port B222 is connected to the air guide port 12. The brake gas is introduced into the housing 1 through the brake gas inlet 11, and sequentially flows through the clamping cavity 14, the second communication channel 22 and the air guide port 12 and enters the brake valve to realize pneumatic braking. At this time, the first port A211 is misaligned with the air guide port 12, and the second port A212 is misaligned with the discharge port 13, and both are blocked by the inner wall of the housing 1.

[0031] When the braking is completed, the driving mechanism 3 drives the sealing core 2 to rotate half a circle and reset. At this time, the first port A211 is aligned with the air guide port 12 and connected, and the second port A212 is aligned with the exhaust port 13 and connected. The remaining gas and water in the brake valve are discharged through the air guide port 12, the first connecting channel 21 and the exhaust port 13 in turn. At this time, the second port B222 is misaligned with the air guide port 12 and is blocked by the inner wall of the shell 1, which can prevent water and gas from flowing into the clamping cavity 14 and flowing back through the brake gas inlet 11 to cause an impact.

[0032] Specifically, a number of spherical cavities 101 are arranged in a circular array around the axis on the inner wall of the shell 1 and below the discharge port 13. A ball 102 is embedded in each spherical cavity 101. An annular groove 201 is provided on the outer wall of the sealing core 2. Each ball 102 is matched and fits into the annular groove 201. The rolling-mounted balls 102 are matched and contacted with the annular groove 201 from all directions to limit the sealing core 2 in the shell 1 to prevent the sealing core 2 from being lifted, lowered or deflected at will.

[0033] Specifically, the driving mechanism 3 includes a driving motor 31 and a connecting shaft 32. The connecting shaft 32 is rotatably installed at the bottom end of the shell 1 and extends vertically upward into the shell 1 and is fixedly connected to the bottom end of the blocking core 2. The driving motor 31 is installed at the bottom end of the shell 1. The output shaft of the driving motor 31 is fixedly connected to the bottom end of the connecting shaft 32. When the driving motor 31 works, its output shaft drives the connecting shaft 32 to rotate. Under the fixed connection action of the connecting shaft 32, the blocking core 2 can be driven to rotate in the shell 1, providing effective drive for the position switching of the first connecting channel 21 and the second connecting channel 22.

[0034] Specifically, two brackets 33 are symmetrically fixed on both sides of the drive motor 31 at the bottom end of the shell 1. The two brackets 33 are both L-shaped, and the other ends of the two brackets 33 are respectively fixed to the two sides of the drive motor 31. The brackets 33 can be used to fix the drive motor 31 on the bottom end of the shell 1 to ensure the stability of the drive motor 31 during operation.

[0035] Specifically, the drive motor 31 is a waterproof motor, so that the drive motor 31 has an effective waterproof effect. The drive motor 31 is electrically connected to the control circuit of the brake valve, which facilitates adaptive control of the operation of the drive motor 31.

[0036] Specifically, the air guide port 12 is arranged higher than the outlet 13, so that a height difference is formed between the air guide port 12 and the outlet 13, which is adapted to the extension direction of the first communication channel 21 and helps water flow from high to low.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An automatic drainage device for a brake valve, characterized in that: It includes a housing (1) and a plugging core (2); The housing (1) is in a cylindrical hollow shape, the plugging core (2) is installed in the housing (1), and the outer wall of the plugging core (2) is in close sliding fit with the inner wall of the housing (1); There is a clamping cavity (14) above the top of the plugging core (2) in the housing (1), the top of the housing (1) has a brake gas inlet (11) communicating with the clamping cavity (14), one side of the housing (1) has an air guide port (12), and the other side has a discharge port (13); One side in the plugging core (2) is provided with a first communication channel (21) for communicating the air guide port (12) and the discharge port (13), and the other side is provided with a second communication channel (22) for communicating the clamping cavity (14) and the air guide port (12); A driving mechanism (3) is provided at the bottom end of the housing (1), and the driving mechanism (3) is used to drive the plugging core (2) to rotate and adjust in the housing (1) to realize the position switching of the first communication channel (21) and the second communication channel (22).

2. The automatic drainage device for a brake valve according to claim 1, characterized in that: The first communication channel (21) is arranged in a Z-shaped structure, and the first port A (211) and the second port A (212) of the first communication channel (21) are respectively located on both sides of the outer peripheral wall of the plugging core (2); When the first port A (211) is aligned and communicated with the air guide port (12), the second port A (212) is also aligned and communicated with the discharge port (13).

3. The automatic drainage device for a brake valve according to claim 1, characterized in that: The second communication channel (22) is arranged in an L-shaped structure, and the first port B (221) of the second communication channel (22) is located at the top end of the plugging core (2); The second port B (222) of the second communication channel (22) is located on the outer peripheral wall of the plugging core (2) and is arranged at the same height as the air guide port (12).

4. The automatic drainage device for a brake valve according to claim 1, characterized in that: A plurality of spherical cavities (101) are arranged in a circumferential array around the axis on the inner wall of the housing (1) and below the discharge port (13), and a ball (102) is installed in each spherical cavity (101); An annular groove (201) is provided on the outer wall of the plugging core (2), and each ball (102) is fitted and clamped into the annular groove (201).

5. The automatic drainage device for a brake valve according to claim 1, characterized in that: The driving mechanism (3) includes a driving motor (31) and a connecting shaft (32); The connecting shaft (32) is rotatably installed at the bottom end of the housing (1) and extends vertically upward into the housing (1) and is fixedly connected to the bottom end of the plugging core (2); The driving motor (31) is installed at the bottom end of the housing (1), and the output shaft of the driving motor (31) is fixedly connected to the bottom end of the connecting shaft (32).

6. The automatic drainage device for a brake valve according to claim 5, characterized in that: Two brackets (33) are symmetrically and fixedly arranged on both sides of the driving motor (31) at the bottom end of the housing (1). Both of the brackets (33) are arranged in an L shape, and the other ends of the two brackets (33) are respectively fixed to both sides of the driving motor (31).

7. The automatic drainage device for a brake valve according to claim 5, characterized in that: The driving motor (31) is a waterproof motor, and the driving motor (31) is electrically connected to the control circuit of the brake valve.

8. The automatic drainage device for a brake valve according to claim 1, characterized in that: The air guide port (12) is arranged higher than the discharge port (13).

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