CN211693538U

CN211693538U - Corrugated pipe valve with purging port

Info

Publication number: CN211693538U
Application number: CN202020122796.9U
Authority: CN
Inventors: 袁剑; 李崇钢
Original assignee: Sichuan Scgute Valve Manufacturing Co ltd
Current assignee: Sichuan Scgute Valve Manufacturing Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-16
Anticipated expiration: 2030-01-19

Abstract

The utility model relates to a bellows valve with a purging port, which comprises a valve body (1), a valve cover (2), a bellows component (3) and a valve rod (4), wherein the valve body (1) is connected with the valve cover (2) through a bolt, and a gasket is arranged between the valve body and the valve cover for sealing; bellows subassembly (3) are in the same place with the upper end of valve gap (2) and the lower extreme welding of valve rod (4) respectively, the bilateral symmetry of valve gap (2) is seted up the screw thread and is swept mouth (5), sweeps and connects on the mouth and sweeps the device, sweeps the device and sweeps check valve (6) and sweep stop valve (7) including sweeping. The purging check valve (6) is a one-way valve, and under the action of the purging check valve (6), an external gas source can only enter the valve in one way, so that harmful substances cannot enter the outside.

Description

Corrugated pipe valve with purging port

Technical Field

The utility model relates to an air purification handles technical field, particularly relates to a bellows valve of mouth is swept in area.

Background

A common corrugated pipe valve is usually used for high-risk medium pipelines. Fig. 1 shows a schematic diagram of a prior art bellows valve. The common corrugated pipe valve of the corrugated pipe valve in the prior art generally adopts the structure that a valve body (1) and a valve cover (2) are combined and connected through a bolt to realize gasket sealing between the valve body (1) and the valve cover (2); the valve cover (2) is internally welded with the upper end of the valve cover (2) and the lower end of the valve rod (4) respectively by adopting a corrugated pipe assembly (3) to realize no leakage. In the opening and closing process of the valve, the valve rod (4) makes lifting motion to drive the corrugated pipe assembly (3) to generate compression and stretching. Normally, the corrugated surface of the corrugated pipe assembly (3) is clean, but as the service time increases, the inner wall of the valve cover (2) can generate rust and enter the corrugated surface of the corrugated pipe assembly (3) under the corrosion of media. On the other hand, since the medium itself contains some impurities, these impurities may also enter the corrugated surface of the bellows assembly (3) as the time of use increases. When rust or impurities are accumulated on the corrugated surface of the corrugated pipe component (3) along with the increase of time, the valve can be difficult to open and close and even blocked, and the corrugated pipe can be damaged during the compression and stretching processes of the corrugated pipe component (3). Therefore, the normal use of the corrugated pipe valve is influenced, the service life of the corrugated pipe assembly (3) is also prolonged, and hidden dangers are brought to the safety of the valve and the pipeline.

For example, the chinese utility model with the publication number CN 209622099U discloses a high-temperature C-shaped anti-coking ball valve, which comprises a valve body with a middle valve cavity, a front valve port, a rear valve port, an upper shaft hole and a lower shaft hole, wherein a C-shaped ball is arranged in the middle valve cavity, the upper part and the lower part of the C-shaped ball are respectively connected with a valve rod and a pivot, the valve rod is rotatably connected in the upper shaft hole through an upper bearing, the pivot is rotatably connected in the lower shaft hole through a lower bearing, a packing box is connected at the upper side of the valve body, a bottom cover assembly is connected at the lower side of the valve body, the rear valve port is provided with a valve seat, a corrugated pipe, a blowing pressing ring and a pressing ring from inside to outside in sequence, the valve body is provided with a first blowing port, a second blowing port and a third blowing port, the first blowing port is communicated to the inner side of the corrugated pipe, the second blowing, the high-temperature C-shaped anti-coking ball valve solves the problem that the valve is stuck due to the fact that particles stay and coke, and is simple and compact in structure, light in weight, high in strength, more reliable and long in service life. But the air source can enter in two directions, and harmful substances can enter the outside to cause pollution.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defect existing in the prior art, the utility model aims to provide a bellows valve of mouth is swept in area solves among the prior art air supply and can two-way entering, and harmful substance can get into the external problem that causes the pollution.

In order to solve the technical problem, the utility model discloses a scheme as follows:

a corrugated pipe valve with a purging opening comprises a valve body, a valve cover, a corrugated pipe assembly and a valve rod, wherein the valve body is connected with the valve cover through a bolt, and a gasket is arranged between the valve body and the valve cover for sealing; the corrugated pipe assembly is welded with the upper end of the valve cover and the lower end of the valve rod respectively, the two sides of the valve cover are symmetrically provided with purging ports, the purging ports are connected with purging devices, and the purging devices comprise purging check valves and purging stop valves. The purging check valve is a one-way valve, and an external gas source can only enter the purging check valve in one way with the valve under the action of the purging check valve, so that harmful substances cannot enter the outside.

Preferably, one end of the purging check valve is welded with the purging port, the other end of the purging check valve is welded with the purging stop valve, and the other end of the purging stop valve is in threaded connection with the purging plug.

In any of the above schemes, preferably, a sealing gasket is arranged between the purge stop valve and the purge plug to ensure sealing.

When the pipeline is overhauled and needs to be swept, the sweeping plug is taken down, the external sweeping gas source connector is connected with the sweeping stop valve, the sweeping stop valve is opened, the external sweeping gas source enters the valve cover and the corrugated pipe assembly through the sweeping check valve in a one-way mode to sweep the inner wall of the valve cover and the corrugated surface of the corrugated pipe assembly simultaneously, and the valve is in a sweeping state at the moment. When the purging is finished, the purging stop valve is closed, the external purging gas source connector is taken down, and the purging plug is installed, so that the valve is restored to a normal state. Therefore, the valve can be switched between a normal state and a purging state, and has a purging function. Just so make the valve can switch at will between normal condition and the state of sweeping, simultaneously owing to sweep under the effect of check valve, outside air supply can only get into with the valve is one-way, guarantees that harmful substance can not get into the external world, can keep simultaneously that the rust or impurity can not accumulate along with the increase of time at the ripple surface of bellows subassembly, avoids causing the valve to open and close difficulty or even block, avoids producing the bellows damage that compression and tensile in-process probably caused at bellows subassembly simultaneously. Therefore, the safety of the blowing operation process is guaranteed, the normal use of the corrugated pipe valve is guaranteed, the service life of the corrugated pipe assembly is prolonged, and the safety of the valve and the pipeline is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a fresh air machine in the prior art.

Fig. 2 is a schematic structural view of a preferred embodiment of a bellows valve with a purge port according to the present invention.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 2, the structure of the bellows valve with purge port according to the present invention is schematically illustrated. The utility model discloses a bellows valve with a purging opening, which comprises a valve body 1, a valve cover 2, a bellows component 3 and a valve rod 4, wherein the valve body 1 is connected with the valve cover 2 through bolts, and a gasket is arranged between the valve body 1 and the valve cover 2 for sealing; bellows subassembly 3 is in the same place with the upper end of valve gap 2 and the lower extreme welding of valve rod 4 respectively, the bilateral symmetry of valve gap 2 is seted up the screw thread and is swept mouth 5, sweeps and connects on the mouth and sweeps the device, sweeps the device including sweeping check valve 6 and sweeping stop valve 7. The purging check valve 6 is a one-way valve, and under the action of the purging check valve 6, an external gas source can only enter the valve in a one-way mode, so that harmful substances cannot enter the outside.

In this embodiment, one end of the purge check valve 6 is welded to the threaded purge port 5, the other end of the purge check valve is welded to the purge stop valve 7, and the other end of the purge stop valve 7 is in threaded connection with the purge plug 8.

In this embodiment, a sealing gasket is arranged between the purge stop valve 7 and the purge plug 8 to ensure sealing.

When the pipeline is overhauled and needs to be swept, the sweeping plug 8 is taken down, the external sweeping gas source connector is connected with the sweeping stop valve 7, the sweeping stop valve 7 is opened, the external sweeping gas source enters the valve cover 2 and the corrugated surface of the corrugated pipe assembly 3 to the inner wall of the valve cover 2 and the corrugated surface of the corrugated pipe assembly 3 through the sweeping check valve 6 in a one-way mode, and the valve is in a sweeping state at the moment. The threaded purging port 5 is designed to be a threaded hole, airflow passing through the threaded hole forms vortex inevitably, the purging area is effectively increased, and meanwhile, the direction of a part of airflow is changed to purge along the tangential direction of the corrugated pipe, so that the corrugated pipe purging device is more beneficial to purging the corrugated pipe. When the purging is finished, the purging stop valve 7 is closed, the external purging gas source connector is taken down, and the purging plug 8 is installed, so that the valve is restored to a normal state. Therefore, the valve can be switched between a normal state and a purging state, and has a purging function. Just so make the valve can switch at will between normal condition and the state of sweeping, simultaneously because under the effect of sweeping check valve 6, outside air supply can only get into with the valve one-way, guarantees that harmful substance can not get into the external world, can keep simultaneously that the rust or impurity can not accumulate along with the increase of time at the ripple surface of bellows subassembly 3, avoids causing the valve to open and close difficulty or even block, avoids producing the bellows damage that compression and tensile in-process probably caused at bellows subassembly 3 simultaneously. Therefore, the safety of the blowing operation process is ensured, the normal use of the corrugated pipe valve is ensured, the service life of the corrugated pipe assembly 3 is prolonged, and the safety of the valve and the pipeline is guaranteed.

As will be understood by those skilled in the art, the bellows valve with purge port of the present invention includes any combination of the parts described herein. These combinations are not described in detail herein for the sake of brevity and clarity, but the scope of the invention, which is defined by any combination of parts or features disclosed herein, will become apparent after a review of this specification.

Claims

1. A corrugated pipe valve with a purging opening comprises a valve body (1), a valve cover (2), a corrugated pipe assembly (3) and a valve rod (4), wherein the valve body (1) is connected with the valve cover (2) through a bolt, and a gasket is arranged between the valve body (1) and the valve cover for sealing; bellows subassembly (3) respectively with the upper end of valve gap (2) and the lower extreme welding of valve rod (4) together, its characterized in that: the two sides of the valve cover (2) are symmetrically provided with thread purging ports (5), and purging devices are connected to the purging ports.

2. A bellows valve with purge port as claimed in claim 1, wherein: the purging device comprises a purging check valve (6) and a purging stop valve (7).

3. A bellows valve with purge port as claimed in claim 2, wherein: one end of the purging check valve (6) is welded with the thread purging port (5), the other end of the purging check valve is welded with the purging stop valve (7), and the other end of the purging stop valve (7) is in threaded connection with the purging plug (8).

4. A bellows valve with purge port as claimed in claim 2 or 3, wherein: a sealing gasket is arranged between the blowing stop valve (7) and the blowing plug (8).

5. A bellows valve with purge port as claimed in claim 2 or 3, wherein: the purging check valve (6) is a one-way valve, and under the action of the purging check valve (6), an external gas source can only enter the valve in one way, so that harmful substances cannot enter the outside.