Multi-loop protective valve

Abstract

The utility model discloses a multi-loop protective valve which comprises a valve body and further comprises an adjusting mechanism, the top of the valve body is provided with the adjusting mechanism, the adjusting mechanism comprises a pressing plate, a mounting cover, a top ring, a compression spring, a compression ring, a screw hole and a bolt, the top of the valve body is connected with the pressing plate in a clamped mode, and the top of the pressing plate is provided with the mounting cover. After a certain pipeline in the valve body is maintained and before the pressure spring is reinstalled, the pressure of the pressure spring on the side to be installed can be adjusted according to the pressure state between other loops, a special testing valve body can be adopted for testing, and it is ensured that the pressure of the adjusted pressure spring is balanced with the pressure of other loops; at the moment, the top ring is moved to the corresponding position, the compression spring is integrally inserted into the mounting cover, meanwhile, the top ring and the top, at the corresponding position, of the mounting cover are fixed together, mounting and positioning of the compression spring can be completed, overall replacement of the valve body is not needed, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of protection valves, and particularly relates to a multi-loop protection valve. Background Technique

[0002] The multi-loop protection valve is composed of multiple pressure-limiting check valves arranged in a certain relationship, and some additional other functional mechanisms are appropriately added to realize the branch supply of the air source in the braking system, which can ensure the independent and normal operation of each loop, divide the whole vehicle air circuit into multiple loops that are both interconnected and independent. When any one loop fails, it does not affect the normal operation and inflation of other loops, and it is one of the important safety adjustment components on the vehicle.

[0003] The existing multi-loop protection valve has the following disadvantages in the use process: during the use of the multi-loop protection valve, due to the existence of the internal compression spring assembly, when a certain loop inside fails, in order to ensure the pressure balance state between each loop, generally the whole protection valve needs to be replaced to ensure the pressure balance state, resulting in a high maintenance cost of the protection valve. For this reason, we propose a multi-loop protection valve. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a multi-loop protection valve. By setting an adjustment mechanism on the top of the valve body and adopting a split structure, it can replace the compression spring assembly inside a single loop separately, reduce the maintenance cost, and can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A multi-loop protection valve includes a valve body and also includes an adjustment mechanism. The adjustment mechanism is arranged on the top of the valve body. The adjustment mechanism includes a pressing plate, a mounting cover, a top ring, a compression spring, a pressing ring, a screw hole and a bolt. The pressing plate is clamped on the top of the valve body and the mounting cover is arranged on the top of the pressing plate. The top ring is detachably connected to the top of the mounting cover, and the pressing ring inserted into the mounting cover is installed at the bottom of the top ring through the compression spring. Corresponding screw holes are opened between the top ring and the top of the mounting cover, and bolts are detachably connected between the screw holes.

[0007] Furthermore, it also includes a sealing mechanism. A sealing mechanism is arranged between the top ring and the mounting cover. The sealing mechanism includes a ring groove and an inserting ring. The ring groove is opened on the top of the mounting cover, and the inserting ring fixedly connected to the bottom of the top ring is inserted into the ring groove; a ring groove is opened on the top of the mounting cover, and the bottom of the top ring is provided with an inserting ring structure. When docking, the inserting ring at the bottom of the top ring is inserted into the ring groove and locked and fixed. By using the cooperation of the ring groove and the inserting ring structure, the contact and sealing area at the connection is increased, and the sealing effect at the connection is improved.

[0008] Further, an adjusting bolt penetrating through a compression spring is installed at the top of the pressing ring, and the end of the adjusting bolt extends into the inner part of the top ring; the pressing force of the compression spring is tested and adjusted by the adjusting bolt before installation.

[0009] Further, concave holes are respectively formed at the positions corresponding to the screw holes at the top of the top ring, and the ends of the bolts are located inside the concave holes; the concave hole structure houses the ends of the bolts so that their ends will not protrude.

[0010] Further, a rubber ring is bonded to the outer periphery of the inserting ring and the rubber ring fits against the inner wall of the ring groove; the rubber ring structure ensures the sealing performance of the connection part.

[0011] Compared with the prior art, the utility model has the following beneficial effects: a pressing plate and a mounting cover are arranged at the top of the valve body, the compression spring assembly is connected to the top ring, and a split detachable structure is adopted between the top ring and the mounting cover. After maintaining a certain pipeline inside the valve body, before reinstalling the compression spring, the pressure of the compression spring on the side to be installed can be adjusted according to the pressure state between other circuits, and a special test valve body can be used for testing to ensure that the pressure of the compression spring after adjustment is balanced with other circuits. At this time, the top ring is moved to the corresponding position and the whole compression spring is inserted into the inner part of the mounting cover, and at the same time, the top ring is fixed to the top of the mounting cover at the corresponding position, then the installation and positioning of the compression spring can be completed without replacing the whole valve body, reducing the maintenance cost; a ring groove is formed at the top of the mounting cover, and an inserting ring structure is arranged at the bottom of the top ring. When docking, the inserting ring at the bottom of the top ring is inserted into the ring groove and locked and fixed. By using the cooperation of the ring groove and the inserting ring structure, the contact and sealing area of the connection part is increased, thereby improving the sealing effect of the connection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a multi - loop protection valve of the present utility model.

[0013] Figure 2 FIG. 2 is a schematic diagram of the internal structure of the mounting cover of a multi - loop protection valve of the present utility model.

[0014] Figure 3 FIG. 3 is a schematic diagram of the top ring structure of a multi - loop protection valve of the present utility model.

[0015] In the figure: 1. Valve body; 2. Adjusting mechanism; 201. Pressing plate; 202. Mounting cover; 203. Top ring; 204. Compression spring; 205. Pressing ring; 206. Adjusting bolt; 207. Screw hole; 208. Bolt; 209. Concave hole; 3. Sealing mechanism; 301. Ring groove; 302. Inserting ring; 303. Rubber ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] As Figures 1 - 3 shown, a multi-loop protection valve includes a valve body 1 and also includes an adjusting mechanism 2. The adjusting mechanism 2 is arranged at the top of the valve body 1. The adjusting mechanism 2 includes a pressing plate 201, a mounting cover 202, a top ring 203, a compression spring 204, a pressing ring 205, a screw hole 207 and a bolt 208. The pressing plate 201 is clamped at the top of the valve body 1 and the mounting cover 202 is arranged at the top of the pressing plate 201. The top ring 203 is detachably connected to the top of the mounting cover 202 and the bottom of the top ring 203 is provided with a pressing ring 205 inserted into the mounting cover 202 through the compression spring 204. Corresponding screw holes 207 are formed between the top ring 203 and the top of the mounting cover 202 and the screw holes 207 are detachably connected with bolts 208.

[0018] Among them, a sealing mechanism 3 is further included. The sealing mechanism 3 is arranged between the top ring 203 and the mounting cover 202. The sealing mechanism 3 includes a ring groove 301 and an inserting ring 302. The ring groove 301 is formed at the top of the mounting cover 202. The bottom of the top ring 203 is fixedly connected with an inserting ring 302 inserted into the ring groove 301; the ring groove 301 is formed at the top of the mounting cover 202, and the bottom of the top ring 203 is provided with a structure of the inserting ring 302. When docking, the inserting ring 302 at the bottom of the top ring 203 is inserted into the ring groove 301 and locked and fixed. By using the cooperation of the ring groove 301 and the inserting ring 302 structures, the contact and sealing areas at the connection are increased, and thus the sealing effect at the connection is improved.

[0019] Among them, an adjusting bolt 206 penetrating through the compression spring 204 is installed at the top of the pressing ring 205 and the end of the adjusting bolt 206 extends into the top ring 203. Concave holes 209 are formed at the corresponding positions of the top of the top ring 203 and the screw holes 207. The ends of the bolts 208 are located inside the concave holes 209; before installation, the pressing force of the compression spring 204 is tested and adjusted through the adjusting bolt 206, and the concave hole 209 structure houses the ends of the bolts 208 so that their ends do not protrude.

[0020] Among them, a rubber ring 303 is bonded to the outer periphery of the inserting ring 302 and the rubber ring 303 fits against the inner wall of the ring groove 301; the rubber ring 303 structure ensures the sealing performance at the connection.

[0021] It should be noted that the present utility model is a multi-loop protection valve. During operation, a pressing plate 201 and a mounting cover 202 are provided at the top of the valve body 1. The compression spring 204 assembly is connected to the top ring 203. A split and detachable structure is adopted between the top ring 203 and the mounting cover 202. After maintaining a certain pipeline inside the valve body 1, before reinstalling the compression spring 204, the pressure of the compression spring 204 on the side to be installed can be adjusted according to the pressure states between other loops. A special test valve body 1 can be used for testing to ensure that the pressure of the adjusted compression spring 204 is balanced with other loops. At this time, the top ring 203 is moved to the corresponding position and the entire compression spring 204 is inserted into the interior of the mounting cover 202. At the same time, the top ring 203 is fixed to the top of the mounting cover 202 at the corresponding position, and the installation and positioning of the compression spring 204 can be completed without the need for overall replacement of the valve body 1, reducing the maintenance cost; a ring groove 301 is provided at the top of the mounting cover 202, and an inserting ring 302 structure is provided at the bottom of the top ring 203. During docking, the inserting ring 302 at the bottom of the top ring 203 is inserted into the interior of the ring groove 301 and locked and fixed. By using the cooperation of the ring groove 301 and the inserting ring 302 structures, the contact and sealing areas at the connection are increased, thereby improving the sealing effect at the connection.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-loop protection valve, comprising a valve body (1), characterized in that, It further includes an adjusting mechanism (2). The adjusting mechanism (2) is arranged on the top of the valve body (1). The adjusting mechanism (2) includes a pressing plate (201), a mounting cover (202), a top ring (203), a compression spring (204), a pressing ring (205), a screw hole (207) and a bolt (208). The pressing plate (201) is clamped on the top of the valve body (1), and the mounting cover (202) is arranged on the top of the pressing plate (201). The top ring (203) is detachably connected to the top of the mounting cover (202), and the pressing ring (205) inserted into the mounting cover (202) is installed at the bottom of the top ring (203) through the compression spring (204). Corresponding screw holes (207) are formed between the top ring (203) and the top of the mounting cover (202), and the bolt (208) is detachably connected between the screw holes (207).

2. The multi-loop protection valve according to claim 1, characterized in that: It further includes a sealing mechanism (3). The sealing mechanism (3) is arranged between the top ring (203) and the mounting cover (202). The sealing mechanism (3) includes a ring groove (301) and an inserting ring (302). The ring groove (301) is formed on the top of the mounting cover (202), and the inserting ring (302) fixedly connected to the bottom of the top ring (203) is inserted into the ring groove (301).

3. The multi-loop protection valve according to claim 1, wherein: An adjusting bolt (206) passing through the compression spring (204) is installed on the top of the pressing ring (205), and the end of the adjusting bolt (206) extends into the top ring (203).

4. A multi-loop protection valve according to claim 1, characterized in that: Concave holes (209) are formed at positions corresponding to the screw holes (207) on the top of the top ring (203), and the ends of the bolts (208) are located inside the concave holes (209).

5. The multi-loop protection valve according to claim 2, characterized in that: A rubber ring (303) is bonded to the outer periphery of the inserting ring (302), and the rubber ring (303) fits against the inner wall of the ring groove (301).

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