CN216279485U

CN216279485U - Pneumatic cut-off valve of high-pressure waterway

Info

Publication number: CN216279485U
Application number: CN202121493518.5U
Authority: CN
Inventors: 李金成; 许武刚; 魏旭
Original assignee: Xcmg Hubei Environmental Protection Technology Co ltd
Current assignee: Xcmg Hubei Environmental Protection Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-04-12
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a high-pressure waterway pneumatic cut-off valve, belongs to the technical field of valves, and solves the problem that the cut-off valve in the prior art is difficult to install. This high pressure trip valve includes the valve body, the valve body seted up first valve pocket and second valve pocket, valve body bottom be equipped with the inlet port with second valve pocket intercommunication, first valve pocket internal diameter be greater than the internal diameter of second valve pocket, the junction of first valve pocket and second valve pocket is equipped with the conical surface, first valve pocket, second valve pocket in the activity peg graft and have the sliding valve, the sliding valve on be equipped with the conical body, conical body and conical surface laminating contact, valve body upper portion seted up the inlet opening with first valve pocket intercommunication, valve body lower part seted up the apopore with second valve pocket intercommunication, sliding valve top be equipped with reset spring. The high-pressure waterway pneumatic cut-off valve disclosed by the utility model has the characteristics of small volume, convenience in installation, low cost, convenience in use and strong practicability.

Description

Pneumatic cut-off valve of high-pressure waterway

Technical Field

The utility model relates to the technical field of valves, in particular to a high-pressure waterway pneumatic stop valve.

Background

Pneumatic trip valve in high pressure water route is mainly applied to sanitation class vehicle, if wash the sweep car, high pressure cleaning car etc. so the operational environment of the pneumatic trip valve in high pressure water route is more abominable, often damages, needs often to change the installation, and prior art's trip valve all adopts high-pressure ball valve and cylinder, pneumatic valve combination to form, and whole bulky needs installation space big, because the installation space of vehicle is limited for operating personnel wastes time and energy and is with high costs when installing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems of the prior art, and provides the high-pressure waterway pneumatic stop valve which has the characteristics of small volume, high integration level, convenience in installation, low cost, convenience in use and strong practicability.

The technical scheme adopted by the utility model is as follows: the utility model provides a pneumatic trip valve in high pressure water route, includes the valve body, the valve body seted up first valve pocket and second valve pocket, valve body bottom be equipped with the inlet port with second valve pocket intercommunication, first valve pocket internal diameter be greater than the internal diameter of second valve pocket, the junction of first valve pocket and second valve pocket is equipped with the conical surface, first valve pocket, second valve intracavity activity peg graft and have the sliding valve, the sliding valve on be equipped with the conical body, conical body and conical surface laminating contact, valve body upper portion seted up the inlet opening with first valve pocket intercommunication, the valve body lower part seted up the apopore with second valve pocket intercommunication, sliding valve top be equipped with reset spring.

As a further improvement, the slide valve comprises a first slide block, a second slide block and a connecting rod, two ends of the connecting rod are respectively connected with the first slide block and the second slide block, the conical body is arranged on the first slide block, the first slide block is connected with the first valve cavity in a sliding manner, and the second slide block is connected with the second valve cavity in a sliding manner.

Further, the diameter of the connecting rod is smaller than the inner diameter of the second valve cavity.

Furthermore, a spring groove is formed in the first sliding block, one end of the return spring is movably inserted into the spring groove, and the other end of the return spring is in contact with the end cover.

Furthermore, a plurality of sealing rings are sleeved on the first sliding block and the second sliding block, and the sealing rings are tightly attached to the first valve cavity and the second valve cavity.

Furthermore, the included angle between the water inlet hole and the water outlet hole is a right angle.

Furthermore, an end cover is arranged at the upper end of the valve body, and the end cover is movably inserted into the first valve cavity.

Furthermore, the end cover is movably inserted with a measuring rod, one end of the measuring rod is connected with the slide valve, a compression spring is arranged between the end cover and the slide valve, and the compression spring is sleeved on the measuring rod.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

according to the pneumatic cut-off valve for the high-pressure waterway, the slide valve is arranged in the valve body, when the cut-off valve is closed, namely the water inlet hole is not communicated with the water outlet hole, the conical body of the slide valve is pushed by the compression force of the reset spring to be tightly attached to the conical surface of the valve body, so that the cut-off valve is closed, the water inlet hole and the water outlet hole are cut off, when the cut-off valve is opened, high-pressure gas is filled from the water inlet hole, the slide valve is moved upwards by overcoming the compression force of the reset spring, so that the water inlet hole is communicated with the water outlet hole, and the purpose of opening the cut-off valve is achieved.

Drawings

FIG. 1 is a main sectional structural view of the present invention;

FIG. 2 is a side cross-sectional structural schematic view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is an enlarged schematic view of a sectional structure of a valve body according to the present invention;

fig. 5 is an enlarged view showing a sectional structure of a spool valve according to the present invention.

Wherein: 1-valve body, 2-sealing ring, 3-slide valve, 4-return spring, 5-end cover, 6-air inlet, 7-water inlet, 8-conical body, 9-conical surface, 10-water outlet, 11-first valve cavity, 12-second valve cavity, 13-spring groove, 14-measuring rod, 15-compression spring, 31-first slide block, 32-second slide block and 33-connecting rod.

Detailed Description

The utility model will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-5, the pneumatic high-pressure waterway shut-off valve of the present invention comprises a valve body 1, wherein the valve body 1 is provided with a first valve cavity 11 and a second valve cavity 12, the bottom of the valve body 1 is provided with an air inlet 6 communicated with the second valve cavity 12, the inner diameter of the first valve cavity 11 is larger than that of the second valve cavity 12, the joint of the first valve cavity 11 and the second valve cavity 12 is provided with a conical surface 9, the first valve cavity 11 and the second valve cavity 12 are movably inserted with a slide valve 3, the slide valve 3 is provided with a conical body 8, the conical body 8 is in contact with the conical surface 9, the upper part of the valve body 1 is provided with an inlet opening 7 communicated with the first valve cavity 11, the lower part of the valve body 1 is provided with an outlet opening 10 communicated with the second valve cavity 12, a return spring 4 is arranged above the slide valve 3, the inlet opening 7 and the outlet opening 10 are both threaded holes, which facilitates the installation of a joint of a water pipe, and when the shut-off valve is closed, that is, the water inlet 7 is not communicated with the water outlet 10, when the compression force of the return spring 4 pushes the conical body 8 of the slide valve 3 to be tightly attached to the conical surface 9 of the valve body 1, so as to form a seal, the water inlet 7 is cut off from the water outlet 10, when the cut-off valve is opened, high-pressure gas is filled from the air inlet 6, the slide valve 3 is moved upwards by overcoming the compression force of the return spring 4, so that the water inlet 7 is communicated with the water outlet 10, and the purpose of cutting off the opening of the valve is achieved.

Specifically, the slide valve 3 includes a first slider 31, a second slider 32 and a connecting rod 33, two ends of the connecting rod 33 are respectively connected with the first slider 31 and the second slider 32, the first slider 31, the second slider 32 and the connecting rod 33 are of an integrated structure, so that production and molding are facilitated, the conical body 8 is arranged on the first slider 31, the first slider 31 is in sliding connection with the first valve cavity 11, the second slider 32 is in sliding connection with the second valve cavity 12, when the shutoff valve is opened, the first slider 31 and the second slider 32 respectively move upwards in the first valve cavity 11 and the second valve cavity 12, and water enters from the water inlet hole 7, flows to the periphery of the connecting rod 33, and flows out from the water outlet hole 10.

Preferably, the diameter of the connecting rod 33 is smaller than the inner diameter of the second valve chamber 12, so that after water flows into the valve body 1 from the water inlet 7, a space flows out from the water outlet 10, and the connecting positions of the connecting rod 33, the first sliding block 31 and the second sliding block 32 are in arc transition, thereby avoiding stress concentration and fracture.

Further, a spring groove 13 is formed in the first sliding block 31, one end of the return spring 4 is movably inserted into the spring groove 13, the other end of the return spring 4 is in contact with the end cover 5, the return spring 4 is placed in the spring groove 13, and the return spring 4 is prevented from inclining or collapsing in the compression process and losing the effect.

Further, all the cover is equipped with a plurality of sealing washer 2 on first slider 31, the second slider 32, and sealing washer 2 closely laminates with first valve pocket 11, second valve pocket 12, has guaranteed the leakproofness of first slider 31, second slider 32 and first valve pocket 11, the slip in-process of second valve pocket 12, prevents that the water that flows in can not rush into air inlet 6 and flow out.

Further, the contained angle between inlet opening 7 and apopore 10 is the right angle, and after the water flowed into valve body 1, increased the dwell time of water at valve body 1, speed when slowing down the water outflow, when the protection pipeline, the reduction rocked.

Further, end cover 5 is arranged at the upper end of valve body 1, end cover 5 is movably inserted into first valve cavity 11, end cover 5 is in clearance fit with first valve cavity 11, and when return spring 4 needs to be replaced, end cover 5 can be detached to directly replace return spring 4, so that convenience and rapidness are achieved.

Further, the activity is pegged graft on the end cover 5 and is had measuring stick 14, the one end and the slide valve 3 of measuring stick 14 are connected, be equipped with compression spring 15 between end cover 5 and the slide valve 3, compression spring 15 cup joints in measuring stick 14, there is the scale on the measuring stick 14, operating personnel can judge according to the number of degrees of scale, when opening of valve, the condition of the size of flow, whether the judgement reset spring 4 that also can be quick when the valve is closed loses efficacy, compression spring 15 provides the compressive force when the valve is closed, anti-top slide valve 3, the valve leakproofness of messenger is better, reset spring 4's life has also been prolonged simultaneously.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the utility model, which will not affect the effect of the utility model and the practicability of the patent.

Claims

1. The high-pressure waterway pneumatic cut-off valve is characterized by comprising a valve body (1), wherein a first valve cavity (11) and a second valve cavity (12) are formed in the valve body (1), an air inlet hole (6) communicated with the second valve cavity (12) is formed in the bottom of the valve body (1), the inner diameter of the first valve cavity (11) is larger than that of the second valve cavity (12), a conical surface (9) is arranged at the joint of the first valve cavity (11) and the second valve cavity (12), a slide valve (3) is movably inserted in the first valve cavity (11) and the second valve cavity (12), a conical body (8) is arranged on the slide valve (3), the conical body (8) is in contact with the conical surface (9) in an attaching manner, a water inlet hole (7) communicated with the first valve cavity (11) is formed in the upper part of the valve body (1), a water outlet hole (10) communicated with the second valve cavity (12) is formed in the lower part of the valve body (1), and a return spring (4) is arranged above the slide valve (3).

2. The pneumatic high-pressure waterway shut-off valve according to claim 1, wherein the spool (3) comprises a first slider (31), a second slider (32) and a connecting rod (33), two ends of the connecting rod (33) are respectively connected with the first slider (31) and the second slider (32), the cone (8) is arranged on the first slider (31), the first slider (31) is slidably connected with the first valve cavity (11), and the second slider (32) is slidably connected with the second valve cavity (12).

3. A high pressure pneumatic shut off valve for waterway according to claim 2, wherein the diameter of the connecting rod (33) is smaller than the inner diameter of the second valve chamber (12).

4. The pneumatic high-pressure waterway shut-off valve according to claim 2, wherein the first slider (31) is provided with a spring groove (13), one end of the return spring (4) is movably inserted into the spring groove (13), and the other end of the return spring (4) is in contact with the end cover (5).

5. The pneumatic high-pressure waterway shut-off valve according to claim 2, wherein a plurality of sealing rings (2) are respectively sleeved on the first sliding block (31) and the second sliding block (32), and the sealing rings (2) are tightly attached to the first valve cavity (11) and the second valve cavity (12).

6. The pneumatic high-pressure waterway shut-off valve according to claim 1, wherein an included angle between the water inlet hole (7) and the water outlet hole (10) is a right angle.

7. The pneumatic high-pressure waterway shut-off valve according to claim 1, wherein an end cover (5) is arranged at the upper end of the valve body (1), and the end cover (5) is movably inserted into the first valve cavity (11).

8. The pneumatic high-pressure waterway shut-off valve according to claim 7, wherein a measuring rod (14) is movably inserted into the end cover (5), one end of the measuring rod (14) is connected with the slide valve (3), a compression spring (15) is arranged between the end cover (5) and the slide valve (3), and the compression spring (15) is sleeved on the measuring rod (14).