Relay valve with stable air pressure output

Abstract

The utility model relates to the field of relay valves, and provides a relay valve with stable air pressure output, which comprises a lower valve body of the relay valve, an inlet fixedly mounted on the outer side of the lower valve body of the relay valve, a connecting pipe fixedly mounted at the outer end of the inlet, a first sealing retainer ring mounted between the inlet and the connecting pipe and comprising a first inner retainer ring and a first outer retainer ring, a sealing check ring I is arranged between the inlet and the connecting pipe, an inner check ring I and an outer check ring I of the sealing check ring I are matched with each other, the inner check ring I and the outer check ring I are matched with each other, the inner check ring I and the outer check ring I are matched with each other, and the inner check ring I and the outer check ring I are matched with each other. The inlet and the inner side of the connecting pipe are sealed, the two clamping rings are fixed, the inlet and the connecting pipe can be further clamped, looseness is avoided, sealing is better, normal use is guaranteed, and air pressure output is more stable.

Description

Technical Field

[0001] The utility model belongs to the field of relay valves and relates to a relay valve with stable air pressure output. Background Art

[0002] The relay valve is part of the automobile air brake system. The air inlet of the relay valve is connected to the air storage cylinder, and the air outlet is connected to the brake air chamber. When the brake pedal is pressed, the output air pressure of the brake valve is used as the control pressure input of the relay valve. Under the action of the control pressure, the air inlet valve is pushed open, so the compressed air enters the brake air chamber directly from the air storage cylinder through the air inlet without flowing through the brake valve, which greatly shortens the inflation line of the brake air chamber and accelerates the inflation process of the air chamber.

[0003] The relay valve in the prior art has poor air tightness and unstable air pressure output during operation, which affects the normal operation of the relay valve. Especially at the input end, the pressure is relatively high, which makes it more prone to air leakage and unstable air pressure output, thus affecting its use and even prone to dangerous situations. Utility Model Content

[0004] The purpose of the utility model is to provide a relay valve with stable air pressure output, which solves the problem that the relay valve in the prior art has poor air tightness and unstable air pressure output during operation, which affects the normal operation of the relay valve, especially at the input end, where the pressure is relatively high and air leakage is more likely to occur. The air pressure output is unstable, which affects the use and even easily leads to dangerous situations.

[0005] The technical scheme of the utility model is realized as follows: it comprises a lower valve body of a relay valve, the lower valve body and the upper body of the relay valve are respectively made of aluminum alloy materials, the lower valve body and the upper body of the relay valve are painted, an inlet is fixedly installed on the outer side of the lower valve body of the relay valve, a connecting pipe is fixedly installed on the outer end of the inlet, a sealing retaining ring is installed between the inlet and the connecting pipe, the sealing retaining ring comprises an inner retaining ring and an outer retaining ring, the inner retaining ring and the outer retaining ring are made of rubber materials, clamping rings are respectively fixedly installed on the outer sides of the circumference of the inlet and the connecting pipe, the clamping rings are fixedly installed on the outer sides of the circumference of the inlet and the connecting pipe by welding, an upper clamping block and a lower clamping block are fixedly installed on the inner side of the clamping ring, and the two groups of upper clamping blocks and lower clamping blocks are fixed as one.

[0006] As a preferred solution of the utility model, an upper body is fixedly installed on the top of the lower valve body of the relay valve, and the upper cover is fixedly installed on the top of the upper body by bolt connection.

[0007] As a preferred solution of the utility model, two outlets are provided at both ends of the top of the upper body, an output pipe is fixedly installed at the outer end of the outlet, an external thread is provided at the outer end of the outlet, and an internal thread is provided at the inner end of the output pipe, and the internal thread is installed outside the external thread.

[0008] As a preferred solution of the utility model, the lower valve body of the relay valve is fixedly mounted with the upper body and the fixing plate by means of a third bolt group, and a plurality of fixing holes are arranged at one end of the fixing plate, in which the third bolt group is installed.

[0009] As a preferred solution of the utility model, a sealing ring 2 is installed between the outlet and the output pipe, and the sealing ring 2 includes an inner ring 2 and an outer ring 2, and the inner ring 2 and the outer ring 2 are made of rubber material.

[0010] As a preferred solution of the utility model, the upper clamping block and the lower clamping block are fixed by a second bolt group, and circular holes are respectively provided at both ends of the upper clamping block and the lower clamping block for installing the second bolt group.

[0011] As a preferred solution of the utility model, an upper cover is threadedly installed on the top of the upper body, and a thread is arranged on the lower inner side of the upper cover for connecting to the top of the upper body.

[0012] As a preferred solution of the utility model, the two groups of upper clamping blocks and lower clamping blocks are fixed by a bolt group. The tops of the two groups of upper clamping blocks and lower clamping blocks are provided with fixing blocks, and a circular hole is provided in the middle of the fixing block for installing the bolt group.

[0013] The beneficial effects of the relay valve with stable air pressure output of the utility model are as follows: a sealing retaining ring is installed between the inlet and the connecting pipe, an inner retaining ring and an outer retaining ring of the sealing retaining ring cooperate with each other to achieve sealing between the inlet and the inner side of the connecting pipe, and the two clamping rings are fixed to further clamp the inlet and the connecting pipe to avoid loosening, thereby making the sealing better, ensuring normal use, and making the air pressure output more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0015] Figure 2 This is an outlet structure diagram of an embodiment of the utility model;

[0016] Figure 3 This is a structural diagram of the sealing retaining ring 2 of the embodiment of the utility model;

[0017] Figure 4 This is an input structure diagram of an embodiment of the utility model;

[0018] Figure 5 This is a diagram of the entrance structure of an embodiment of the utility model;

[0019] Figure 6 This is a cutaway structural diagram of a sealing retaining ring according to an embodiment of the utility model;

[0020] In the figure: 1. lower valve body of relay valve; 2. upper body; 3. bolt group three; 4. upper cover; 5. outlet; 6. fixing plate; 7. inlet; 8. sealing retaining ring two; 801. inner retaining ring two; 802. outer retaining ring two; 9. output pipe; 10. connecting pipe; 11. clamping ring; 12. bolt group one; 13. upper clamping block; 14. lower clamping block; 15. bolt group two; 16. sealing retaining ring one; 1601. inner retaining ring one; 1602. outer retaining ring one. DETAILED DESCRIPTION

[0021] like Figures 1 to 6 As shown, the utility model discloses a relay valve with stable air pressure output, and the technical scheme adopted is as follows: comprising a relay valve lower valve body 1, an inlet 7 is fixedly installed on the outer side of the relay valve lower valve body 1, a connecting pipe 10 is fixedly installed on the outer end of the inlet 7, a sealing retainer ring 16 is installed between the inlet 7 and the connecting pipe 10, the sealing retainer ring 16 comprises an inner retainer ring 1601 and an outer retainer ring 1602, a clamp ring 11 is fixedly installed on the outer side of the inlet 7 and the connecting pipe 10, and an upper clamp ring 11 is fixedly installed on the inner side of the clamp ring 11. The two groups of upper clamping blocks 13 and lower clamping blocks 14 are fixed as a whole. A sealing retaining ring 16 is installed between the inlet 7 and the connecting pipe 10 in the utility model. The inner retaining ring 1601 and the outer retaining ring 1602 of the sealing retaining ring 16 cooperate with each other to achieve the sealing of the inner side of the inlet 7 and the connecting pipe 10. The two retaining rings 11 are fixed, which can further clamp the inlet 7 and the connecting pipe 10 to avoid loosening, make the sealing better, ensure normal use, and make the air pressure output more stable.

[0022] An upper body 2 is fixedly mounted on the top of the lower valve body 1 of the relay valve. The upper body 2 is used to cover the top of the lower valve body 1 of the relay valve to form a relay valve housing.

[0023] Two outlets 5 are provided at both ends of the top of the upper body 2, and an output pipe 9 is fixedly installed at the outer end of the outlet 5, and the outer end of the outlet 5 is connected to the output pipe 9 for outputting gas.

[0024] The lower valve body 1 of the relay valve is fixedly mounted with the upper body 2 and the fixing plate 6 by means of a bolt group 3, and the fixing plate 6 is connected by bolts, so that the valve body of the relay valve is mounted on a vehicle.

[0025] A sealing ring 8 is installed between the outlet 5 and the output pipe 9. The sealing ring 8 includes an inner ring 801 and an outer ring 802. The inner ring 801 and the outer ring 802 cooperate with each other and are installed between the outlet 5 and the output pipe 9. They are deformed by extrusion to seal the two.

[0026] The upper clamping block 13 and the lower clamping block 14 are fixed by a second bolt group 15 , and the second bolt group 15 is used to fix the upper clamping block 13 and the lower clamping block 14 so that the upper clamping block 13 and the lower clamping block 14 are installed on the inner side of the outer ring of the clamping ring 11 .

[0027] The top of the upper body 2 is threadedly mounted with an upper cover 4, which is used to install and protect internal moving parts such as the piston.

[0028] The two groups of upper clamping blocks 13 and lower clamping blocks 14 are fixed by bolt group 12. Bolt group 12 is used to fix the two groups of upper clamping blocks 13 and lower clamping blocks 14 so that the two groups of clamping rings 11 form a whole, which can fix the inlet 7 and the connecting pipe 10 more tightly and prevent the inlet 7 and the connecting pipe 10 from loosening.

[0029] The working principle of this relay valve with stable air pressure output: when installing the relay valve with stable air pressure output, install the outer retaining ring 1602 in the inner retaining ring 1601 to form a sealing ring 16, install the sealing ring 16 in the groove at the outer end of the inlet 7, install the connecting pipe 10 at the outer end of the inlet 7, fix the upper clamping block 13 and the lower clamping block 14 through the bolt group 15, install them in two clamping rings 11, use the bolt group 12 to connect the two clamping rings 11, further fix the inlet 7 and the connecting pipe 10, install the outer retaining ring 802 in the inner retaining ring 801 to form a sealing ring 8, install the sealing ring 8 in the groove at the outer end of the outlet 5, install the output pipe 9 at the outer end of the outlet 5, fix the fixing plate 6 on the car, and then it can be used.

[0030] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A relay valve with stable air pressure output, characterized by: The invention comprises a lower valve body (1) of a relay valve, an inlet (7) being fixedly mounted on the outer side of the lower valve body (1), a connecting pipe (10) being fixedly mounted on the outer end of the inlet (7), a sealing retaining ring (16) being mounted between the inlet (7) and the connecting pipe (10), the sealing retaining ring (16) comprising an inner retaining ring (1601) and an outer retaining ring (1602), clamping rings (11) being fixedly mounted on the outer sides of the circumferences of the inlet (7) and the connecting pipe (10), an upper clamping block (13) and a lower clamping block (14) being fixedly mounted on the inner side of the clamping ring (11), and two groups of the upper clamping blocks (13) and the lower clamping blocks (14) being fixedly mounted as a whole.

2. The relay valve with stable air pressure output according to claim 1, characterized in that: An upper body (2) is fixedly mounted on the top of the lower valve body (1) of the relay valve.

3. The relay valve with stable air pressure output according to claim 2, characterized in that: Two outlets (5) are provided at both ends of the top of the upper body (2), and output pipes (9) are fixedly mounted on the outer ends of the outlets (5).

4. The relay valve with stable air pressure output according to claim 2, 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) by means of a third bolt group (3).

5. The relay valve with stable air pressure output according to claim 3, characterized in that: A second sealing ring (8) is installed between the outlet (5) and the output pipe (9), and the second sealing ring (8) comprises a second inner ring (801) and a second outer ring (802).

6. The relay valve with stable air pressure output according to claim 3, characterized in that: The upper clamping block (13) and the lower clamping block (14) are fixed by a second bolt group (15).

7. The relay valve with stable air pressure output according to claim 4, characterized in that: The top of the upper body (2) is threadedly mounted with an upper cover (4).

8. The relay valve with stable air pressure output according to claim 1, characterized in that: The two groups of upper clamping blocks (13) and lower clamping blocks (14) are fixed by bolt group 1 (12).

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