CN215635206U

CN215635206U - Mechanical automatic reversing valve with sealing structure convenient to disassemble and assemble

Info

Publication number: CN215635206U
Application number: CN202121393388.8U
Authority: CN
Inventors: 邹燕; 潘小俊; 潘杰
Original assignee: Danyang Fanglan Gas Equipment Co ltd
Current assignee: Danyang Fanglan Gas Equipment Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-01-25
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a mechanical automatic reversing valve with a sealing structure convenient to disassemble and assemble, which comprises an automatic reversing valve body, a reversing valve cover, a first O-shaped ring, a reversing valve limiting sleeve, a reversing valve core, a second O-shaped ring, a reset spring, a limiting steel ball, a limiting hole and an outlet adapter, wherein the outlet adapter is provided with a sealing structure convenient to disassemble and assemble in a threaded manner at one end far away from the automatic reversing valve body, one end far away from the automatic reversing valve body of the reversing valve cover and the other end of the automatic reversing valve body; the sealing structure convenient to disassemble and assemble comprises a sealing cover body and a sealing sleeve. The utility model is safe and reliable, is especially suitable for some explosion-proof occasions, and is convenient to be installed on the device; the sealing structure can prevent gas in the device from leaking out, and is convenient to disassemble and assemble.

Description

Mechanical automatic reversing valve with sealing structure convenient to disassemble and assemble

Technical Field

The utility model relates to a mechanical automatic reversing valve with a sealing structure convenient to disassemble and assemble, and belongs to the technical field of automatic reversing valves.

Background

The gas switching is mostly solenoid valve switching and membrane switching valve. The purpose of switching gas left and right is achieved through the control of the electromagnetic valve, the electromagnetic valve generates heat when being electrified for a long time, electric sparks and coil burnout are likely to be generated, and the electromagnetic valve is not safe in the conveying process of the gas such as oxygen. There has been a gradual increase in the art of mechanical automatic directional valves to solve the above problems.

Chinese patent publication No. CN111664267A relates to a gas differential pressure automatic switching valve, which comprises a valve body, the valve body includes first end cover, second end cover, middle valve body and output valve body, first end cover and second end cover are located the both sides of middle valve body, the delivery outlet has been seted up to the one end of middle valve body, output valve body is connected with the delivery outlet, and communicates with each other with middle valve body, first end cover and second end cover with middle valve body communicates with each other, the center of middle valve body is provided with the case assembly, axial motion in middle valve body of case assembly. Compared with an electromagnetic valve switching valve, the pneumatic differential pressure automatic switching valve disclosed by the utility model can work more safely and normally, does not generate any electric spark in the switching process, and is higher in safety. And can be switched normally under the condition of pressure difference. Compared with a membrane type switching valve, the pneumatic differential pressure automatic switching valve is difficult to be oxidized in pure oxygen, has long service life and high pressure resistance, and overcomes the defects of the membrane type switching valve.

However, in the prior art, when the mechanical automatic reversing valve is connected into the device, the phenomenon of air leakage and air leakage can occur, and the problem of inconvenient installation can occur.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, it is an object of the present invention to provide a mechanical automatic direction changing valve having a sealing structure that is easily disassembled.

The utility model provides the following technical scheme:

the utility model provides a mechanical type automatic reversing valve who contains be convenient for dismouting seal structure, includes the automatic reversing valve body, installs the switching-over valve gap of automatic reversing valve body one end, the automatic reversing valve body with install first O type circle between the switching-over valve gap, install switching-over valve position sleeve in the automatic reversing valve body installs the switching-over valve case in the switching-over valve position sleeve, second O type circle is all installed at switching-over valve case both ends, and the second O type circle of one end with switching-over valve gap inner wall contact, install reset spring in the switching-over valve case, spacing steel ball is installed at the reset spring both ends, spacing steel ball is arranged in spacing downthehole that is equipped with in the switching-over valve position sleeve, installs export adapter on the automatic reversing valve body, export adapter keeps away from the one end of automatic reversing valve body, One end of the reversing valve cover, which is far away from the automatic reversing valve body, and the other end of the automatic reversing valve body are both provided with a detachable sealing structure in a threaded manner; the sealing structure convenient to disassemble and assemble comprises a sealing cover body and a sealing cover body, wherein the sealing cover body is provided with an external thread; the seal cover is installed on the seal cover body, and a large seal lip is arranged on the seal cover.

Specifically, a cavity is arranged in the valve core of the reversing valve, and the return spring is arranged in the cavity.

Specifically, the diameter of the limiting hole is equal to the diameter of the limiting steel ball.

Specifically, the number of the limiting holes is two.

Specifically, the sealing sleeve and the large sealing lip are made of rubber.

The utility model has the beneficial effects that:

1. the utility model has simple structure, does not generate any electric spark in the switching process, has higher safety, can normally operate and switch in a pressure difference state, is safe and reliable, and is particularly suitable for some explosion-proof occasions.

2. The utility model is convenient to install on the device and can be installed on connecting pipes with different diameters, thereby solving the problem of inconvenient installation in the prior art.

3. The sealing structure prevents the gas in the device from leaking out, is convenient to assemble and disassemble, and solves the problem of gas leakage and leakage when the mechanical automatic reversing valve is connected into the device in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view showing the inner structure of the easy-to-detach sealing structure according to the present invention;

FIG. 3 is a state diagram of the operation of the present invention;

labeled as: 1. a valve body of the automatic reversing valve; 2. a first O-ring; 3. limiting steel balls; 4. a reversing valve core; 5. a reversing valve limiting sleeve; 6. a reversing valve cover; 7. an outlet adapter; 8. a second O-ring; 9. the sealing structure is convenient to disassemble and assemble; 10. an automatic directional control valve; 11. a gas terminal is used; 12. a pressure reducing valve; 13. a right gas cylinder group; 14. a left air cylinder group; 15. a limiting hole; 16. a return spring; 17. a cavity; 901. sealing the cover body; 902. sealing sleeves; 903. a large sealing lip.

Detailed Description

As shown in figure 1, the mechanical automatic reversing valve with the sealing structure convenient to disassemble and assemble comprises an automatic reversing valve body 1, a reversing valve cover 6 arranged at one end of the automatic reversing valve body 1, a first O-shaped ring 2 is arranged between the automatic reversing valve body 1 and the reversing valve cover 6, a reversing valve limiting sleeve 5 is arranged in the automatic reversing valve body 1, a reversing valve core 4 is arranged in the reversing valve limiting sleeve 5, two ends of the reversing valve core 4 are both provided with a second O-shaped ring 8, and the second O-shaped ring 8 at one end contacts with the inner wall of the reversing valve cover 6, a return spring 16 is arranged in the reversing valve core 4, and limiting steel balls 3 are arranged at two ends of the reset spring 16, the limiting steel balls 3 are arranged in limiting holes 15 formed in the reversing valve limiting sleeve 5, and are arranged on an outlet adapter 7 on the automatic reversing valve body 1.

Preferably, a cavity 17 is formed in the valve core 4 of the reversing valve, and the return spring 16 is arranged in the cavity 17. The diameter of the limiting hole 15 is equal to that of the limiting steel ball 3. The number of the limiting holes 15 is two.

Export adapter 7 is kept away from the one end of automatic reversing valve body 1 reversing valve gap 6 is kept away from the one end of automatic reversing valve body 1 with the equal threaded mounting of the automatic reversing valve body 1 other end just assembles seal structure 9. Referring to fig. 2, the sealing structure 9 includes a sealing cover 901 with external threads; the external thread enables the easy-to-dismount and mount sealing structure 9 to be conveniently dismounted from the automatic reversing valve 10, the sealing sleeve 902 is mounted on the sealing cover body 901, and the sealing sleeve 902 is provided with a large sealing lip 903.

The material of the sealing sleeve 902 and the large sealing lip 903 is rubber. Due to the elasticity and toughness of rubber, the large sealing lip 903 can be tightly attached to a connecting pipe to be connected and can be installed on connecting pipes with different diameters, the installation can be completed only by inserting the connecting pipe into the easy-to-dismount sealing structure 9, and the multi-layer large sealing lip 903 can enable gas to be sealed in the automatic reversing valve 10 and the connecting pipe.

Referring to fig. 3, two ends of the automatic directional control valve 10 are connected to a pressure reducing valve 12 through a standard connection pipe, an upper end of the automatic directional control valve 10 is connected to an air using terminal 11 through a standard connection pipe, and the pressure reducing valve 12 is connected to a left air cylinder group 14 and a right air cylinder group 13 through standard connection pipes, respectively.

The utility model automatically switches to the side with high pressure according to the difference of left and right pressure.

The working principle of the utility model is as follows:

when the centralized gas supply converges to the gas terminal 11, the outlet pressures at the two sides are adjusted by the pressure reducing valve 12, the left side pressure is adjusted to 0.8Mpa, the right side pressure is adjusted to 0.75Mpa, the left side pressure at the two ends of the automatic reversing valve 10 is higher than the right side pressure, the limiting steel ball 3 in the automatic reversing valve 10 stops at the right side limiting hole 15, the left gas bottle group 14 supplies gas at the moment, when the gas source gas supply pressure of the left gas bottle group 14 is lower than the pressure of the right gas bottle group 13, the limiting ball stops at the left side limiting hole 15, the right gas bottle group 13 supplies gas at the moment, and therefore the purpose of automatic switching is achieved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a contain mechanical type automatic reversing valve convenient to dismouting seal structure, includes automatic reversing valve body (1), installs switching-over valve gap (6) of automatic reversing valve body (1) one end, automatic reversing valve body (1) with install first O type circle (2) between switching-over valve gap (6), install switching-over valve stop collar (5) in the automatic reversing valve body (1), install switching-over valve case (4) in switching-over valve stop collar (5), second O type circle (8) are all installed at switching-over valve case (4) both ends, and the second O type circle (8) of one end with switching-over valve gap (6) inner wall contact, install reset spring (16) in switching-over valve case (4), spacing steel ball (3) are installed at reset spring (16) both ends, spacing steel ball (3) are arranged in spacing hole (15) that are equipped with in switching-over valve stop collar (5), an outlet adapter (7) arranged on the valve body (1) of the automatic reversing valve,

the automatic reversing valve is characterized in that one end of the outlet adapter (7) far away from the automatic reversing valve body (1), one end of the reversing valve cover (6) far away from the automatic reversing valve body (1) and the other end of the automatic reversing valve body (1) are respectively provided with a sealing structure (9) which is convenient to disassemble and assemble in a threaded manner;

the easy-to-disassemble sealing structure (9) comprises

The sealing cover body (901), the sealing cover body (901) is provided with external threads;

the sealing sleeve (902) is installed on the sealing cover body (901), and a large sealing lip (903) is arranged on the sealing sleeve (902).

2. The mechanical automatic reversing valve with the sealing structure convenient to disassemble and assemble as claimed in claim 1, characterized in that a cavity (17) is arranged in the valve core (4) of the reversing valve, and the return spring (16) is arranged in the cavity (17).

3. The mechanical automatic reversing valve with the sealing structure convenient to disassemble and assemble as claimed in claim 1, wherein the diameter of the limiting hole (15) is equal to the diameter of the limiting steel ball (3).

4. The mechanical automatic reversing valve with the sealing structure convenient to disassemble and assemble as claimed in claim 2, wherein the number of the limiting holes (15) is two.

5. The mechanical automatic reversing valve with the sealing structure convenient to disassemble and assemble as claimed in claim 1, is characterized in that the material of the sealing sleeve (902) and the material of the large sealing lip (903) are both rubber.