Relay valve body with good sealing performance

Abstract

The utility model relates to the field of relay valves, and provides a relay valve body with good sealing performance, which comprises a lower relay valve body, an inlet is fixedly arranged on the outer side of the lower relay valve body, an input pipe is fixedly arranged at the outer end of the inlet, a conical sleeve and a sealing ring are arranged between the input pipe and the inlet, and the conical sleeve and the sealing ring are respectively made of rubber materials. The upper body is fixedly installed on the top of the relay valve lower valve body, the two outlets are formed in the two ends of the top of the upper body, the output pipe is fixedly installed at the outer ends of the outlets, and the conical sleeve and the sealing ring are installed between the input pipe and the outlets. The conical sleeve and the sealing ring are installed between the input pipe and the outlet, and the conical sleeve and the sealing ring form double-layer protection at the connecting position, so that the sealing performance is good, the possibility of leakage is reduced under the condition that air pressure output is unstable in the working process, and the normal working process of the relay valve is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of relay valves and relates to a relay valve body with good sealing performance. Background Art

[0002] The relay valve is part of the automotive air brake system. The air inlet of the relay valve is connected to the air storage tank, and the air outlet is connected to the brake chamber. When the brake pedal is depressed, the output air pressure of the brake valve is input as the control pressure of the relay valve. Under the action of the control pressure, the intake valve is pushed open, and then compressed air directly enters the brake chamber from the air storage tank through the air inlet without flowing through the brake valve, greatly shortening the charging pipeline of the brake chamber and accelerating the inflation process of the chamber. Therefore, the relay valve is also called an acceleration valve.

[0003] During the working process of the relay valve, the internal pressure is relatively high, the air pressure output during work is unstable, the airtightness of the relay valve is poor, and impact force will be generated, resulting in leakage at the connection part between the pipeline and the valve body of the relay valve, affecting the normal operation of the relay valve. Content of the Utility Model

[0004] The purpose of the utility model is to provide a relay valve body with good sealing performance, which solves the problems that during the working process of the relay valve, the internal pressure is relatively high, the air pressure output during work is unstable, the airtightness of the relay valve is poor, impact force will be generated, resulting in leakage at the connection part between the pipeline and the valve body of the relay valve, and affecting the normal operation of the relay valve.

[0005] The technical solution of the utility model is realized as follows: It includes a lower relay valve body. An inlet is fixedly installed on the outer side of the lower relay valve body. An input pipe is fixedly installed at the outer end of the inlet. A tapered sleeve and a sealing ring are installed between the input pipe and the inlet. The tapered sleeve and the sealing ring are respectively made of rubber materials. The upper body is fixedly installed at the top of the lower relay valve body. Two outlets are arranged at both ends of the top of the upper body. An output pipe is fixedly installed at the outer end of the outlet. A tapered sleeve and a sealing ring are installed between the input pipe and the outlet. The lower relay valve body and the upper body are respectively made of aluminum alloy materials, and the lower relay valve body and the upper body are painted with paint.

[0006] As a preferred scheme of the utility model, the lower relay valve body is fixedly installed with the upper body and a fixing plate through a bolt group. An installation upper cover is fixedly installed at the top of the upper body. The upper cover is fixedly installed at the top of the upper body through a bolt connection method.

[0007] As a preferred scheme of the utility model, an internal thread one is arranged at the inner end of the inner side of the inlet. The pitch of the internal thread one is 1.5 millimeters, and sealant is applied inside the internal thread one. A tapered surface one is arranged at the outer end of the inner side of the inlet. A clamping position one is arranged at the outer end of the inlet. The outer side of the clamping position one is hexagonal, and an installation position one is arranged on the outer side of the clamping position one.

[0008] As a preferred embodiment of the present utility model, an internal thread two is provided at the inner end of the inner side of the outlet. The pitch of the internal thread two is 1.5 millimeters, and sealant is coated inside the internal thread two. A conical surface two is provided at the outer end of the inner side of the outlet, a clamping position two is provided at the outer end of the outlet, the outer side of the clamping position one is hexagonal, and an installation position two is provided at the outer side of the clamping position two.

[0009] As a preferred embodiment of the present utility model, a clamping position three is provided in the middle of the input pipe, a conical surface three is provided at the inner end of the input pipe, a thread head one is provided at the inner end of the input pipe, the pitch of the thread head one is 1.5 millimeters, an installation position three is provided at the outer side of the clamping position three, the outer side of the installation position three is hexagonal, and a conical sleeve is installed outside the conical surface three.

[0010] As a preferred embodiment of the present utility model, a clamping position four is provided in the middle of the output pipe, a conical surface four is provided at the inner end of the output pipe, a thread head two is provided at the inner end of the output pipe, the pitch of the thread head two is 1.5 millimeters, an installation position four is provided at the outer side of the clamping position four, the outer side of the installation position four is hexagonal, and a conical sleeve is installed outside the conical surface four.

[0011] As a preferred embodiment of the present utility model, a sealing ring is installed between the installation position one and the installation position three. Rounded corners are respectively provided on the inner sides of the installation position one and the installation position three, and the outer corners of the sealing ring are rounded.

[0012] As a preferred embodiment of the present utility model, a sealing ring is installed between the installation position two and the installation position four. Rounded corners are respectively provided on the inner sides of the installation position two and the installation position four, and the outer corners of the sealing ring are rounded.

[0013] Beneficial effects of the relay valve body with good sealing performance of the present utility model: A conical sleeve and a sealing ring are installed between the input pipe and the inlet of the present utility model, and a conical sleeve and a sealing ring are installed between the input pipe and the outlet. The conical sleeve and the sealing ring form a double-layer protection at the connection part, making its sealing performance good. In the case of unstable air pressure output during the working process, the possibility of leakage is reduced, ensuring the normal working process of the relay valve. Description of the Drawings

[0014] Figure 1 It is the overall structure diagram of the embodiment of the present utility model;

[0015] Figure 2 It is the output structure diagram of the embodiment of the present utility model;

[0016] Figure 3 It is the inlet structure diagram of the embodiment of the present utility model;

[0017] Figure 4 It is the outlet structure diagram of the embodiment of the present utility model;

[0018] In the figure: 1. Lower valve body of relay valve; 2. Upper body; 3. Bolt group; 4. Upper cover; 5. Outlet; 6. Fixed plate; 7. Inlet; 10. Sealing ring; 11. Tapered sleeve; 17. Second internal thread; 18. Second clamping position; 19. Fourth installation position; 20. Second thread head; 21. Fourth tapered surface; 22. Fourth clamping position; 23. Output pipe; 24. First installation position; 25. Second installation position; 26. Second tapered surface; 27. First tapered surface. Detailed implementation mode

[0019] As Figures 1 to 4 shown, the present utility model discloses a relay valve body with good sealing performance. The adopted technical solution is that it includes a lower valve body 1 of the relay valve. An inlet 7 is fixedly installed on the outer side of the lower valve body 1 of the relay valve. An input pipe is fixedly installed at the outer end of the inlet 7. A tapered sleeve 11 and a sealing ring 10 are installed between the input pipe and the inlet 7. An upper body 2 is fixedly installed at the top of the lower valve body 1 of the relay valve. Two outlets 5 are arranged at both ends of the top of the upper body 2. An output pipe 23 is fixedly installed at the outer end of the outlet 5. A tapered sleeve 11 and a sealing ring 10 are installed between the input pipe 23 and the outlet 5. In the present utility model, a tapered sleeve 11 and a sealing ring 10 are installed between the input pipe and the inlet 7, and a tapered sleeve 11 and a sealing ring 10 are installed between the input pipe 23 and the outlet 5. The tapered sleeve 11 and the sealing ring 10 form a double-layer protection at the connection part, making its sealing performance good. In the case of unstable air pressure output during the working process, the possibility of leakage is reduced, ensuring the normal working process of the relay valve.

[0020] The lower valve body 1 of the relay valve is fixedly installed with the upper body 2 and the fixed plate 6 through a bolt group 3. The fixed plate 6 is connected by bolts and is used for installing the valve body of the relay valve on the vehicle. An upper cover 4 is fixedly installed at the top of the upper body 2, and the upper cover 4 is used for installing internal moving parts such as pistons.

[0021] At the inner end of the inner side of the inlet 7, a first internal thread is provided. At the outer end of the inner side of the inlet 7, a first tapered surface 27 is provided. The first tapered surface 27 is used to increase the area of the contact connecting piece. At the outer end of the inlet 7, a first clamping position is provided. The first clamping position is used for installing a wrench to realize the connection of each component. An installation position 24 is provided outside the first clamping position.

[0022] At the inner end of the inner side of the outlet 5, a second internal thread 17 is provided. At the outer end of the inner side of the outlet 5, a second tapered surface 26 is provided. The second tapered surface 26 is used to increase the area of the contact connecting piece. At the outer end of the outlet 5, a second clamping position 18 is provided. The second clamping position 18 is used for installing a wrench to realize the connection of each component. An installation position 25 is provided outside the second clamping position 18.

[0023] A clamping position three is provided in the middle of the input pipe. A conical surface three is provided at the inner end of the input pipe. The conical surface three is used to increase the contact area of the connection part. A threaded head one is provided at the inner end of the input pipe. The threaded head one is used for the connection between the input pipe and the inlet 7. An installation position three is provided outside the clamping position three. The installation position three is used to clamp a wrench for installing the input pipe. A conical sleeve 11 is installed outside the conical surface three.

[0024] A clamping position four 22 is provided in the middle of the output pipe 23. A conical surface four 21 is provided at the inner end of the output pipe 23. The conical surface four 21 is used to increase the contact area of the connection part. A threaded head two 20 is provided at the inner end of the output pipe 23. The threaded head two 20 is used for the connection between the output pipe 23 and the outlet 5. An installation position four 19 is provided outside the clamping position four 22. The installation position four 19 is used to clamp a wrench for installing the output pipe 23. A conical sleeve 11 is installed outside the conical surface four 21.

[0025] A sealing ring 10 is installed between the installation position one 24 and the installation position three. The sealing ring 10 is used for sealing between the installation position one 24 and the installation position three to achieve the connection between the input pipe and the inlet 7.

[0026] A sealing ring 10 is installed between the installation position two 25 and the installation position four 19. The sealing ring 10 is used for sealing between the installation position two 25 and the installation position four 19 to achieve the connection between the output pipe 23 and the outlet 5.

[0027] The working principle of this relay valve body with good sealing performance: When the relay valve body with good sealing performance is in use, a conical sleeve 11 is installed outside the conical surface three, a sealing ring 10 is installed in the installation position one 24, a wrench is clamped into the clamping position one and the installation position three, so that the threaded head one is installed in the internal thread one 8, the input pipe is connected to the inlet 7, the conical sleeve 11 contacts the conical surface one 27 to form a preliminary seal, the sealing ring 10 is clamped between the installation position one 24 and the installation position three, and the installation completes the secondary seal of the input pipe and the inlet 7. A conical sleeve 11 is installed outside the conical surface four 21, a sealing ring 10 is installed in the installation position two 25, a wrench is clamped into the clamping position two 25 and the installation position four 19, so that the threaded head two 20 is installed in the internal thread two 17, the output pipe 23 is connected to the outlet 5, the conical sleeve 11 contacts the conical surface two 26 to form a preliminary seal, the sealing ring 10 is clamped between the installation position two 25 and the installation position four 19, and the installation completes the secondary seal of the output pipe 23 and the outlet 5. After that, bolts are installed in the fixing plate 6 to install the relay valve on the vehicle.

[0028] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention, and modifications or deformations that do not involve creative labor are still within the protection scope of the present invention.

Claims

1. A relay valve body with good sealing performance, characterized by: The relay valve comprises a lower valve body (1), an inlet (7) is fixedly mounted on the outer side of the lower valve body (1), an input pipe is fixedly mounted on the outer end of the inlet (7), a conical sleeve (11) and a sealing ring (10) are mounted between the input pipe and the inlet (7), an upper body (2) is fixedly mounted on the top of the lower valve body (1), two outlets (5) are arranged at both ends of the top of the upper body (2), an output pipe (23) is fixedly mounted on the outer end of the outlet (5), and a conical sleeve (11) and a sealing ring (10) are mounted between the output pipe (23) and the outlet (5).

2. The relay valve body with good sealing performance according to claim 1, characterized in that: The lower valve body (1) of the relay valve is fixedly mounted with an upper body (2) and a fixing plate (6) via a bolt group (3); a mounting upper cover (4) is fixedly mounted on the top of the upper body (2).

3. The relay valve body with good sealing performance according to claim 1, characterized in that: The inner end of the inner side of the inlet (7) is provided with an internal thread, the outer end of the inner side of the inlet (7) is provided with a conical surface (27), the outer end of the inlet (7) is provided with a locking position, and the outer side of the locking position is provided with a mounting position (24).

4. The relay valve body with good sealing performance according to claim 1, characterized in that: The inner end of the inner side of the outlet (5) is provided with an inner thread (17), the outer end of the inner side of the outlet (5) is provided with a conical surface (26), the outer end of the outlet (5) is provided with a second latching position (18), and the outer side of the second latching position (18) is provided with a second mounting position (25).

5. The relay valve body with good sealing performance according to claim 3, characterized in that: A third clamping position is provided in the middle of the input pipe, a third conical surface is provided at the inner end of the input pipe, a first threaded head is provided at the inner end of the input pipe, a third mounting position is provided outside the third clamping position, and a conical sleeve (11) is installed outside the third conical surface.

6. The relay valve body with good sealing performance according to claim 4, characterized in that: A fourth locking position (22) is provided in the middle of the output tube (23), a fourth conical surface (21) is provided at the inner end of the output tube (23), a second threaded head (20) is provided at the inner end of the output tube (23), a fourth mounting position (19) is provided outside the fourth locking position (22), and a conical sleeve (11) is installed outside the fourth conical surface (21).

7. The relay valve body with good sealing performance according to claim 5, characterized in that: A sealing ring (10) is installed between the first installation position (24) and the third installation position.

8. The relay valve body with good sealing performance according to claim 6, characterized in that: A sealing ring (10) is installed between the second installation position (25) and the fourth installation position (19).

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