CN210950413U

CN210950413U - PVC shutoff gasbag

Info

Publication number: CN210950413U
Application number: CN201922033270.3U
Authority: CN
Inventors: 张长春; 郑莉
Original assignee: Shenzhen Win Win New Material Technology Co ltd
Current assignee: Shenzhen Win Win New Material Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-07
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a PVC shutoff gasbag, including the gasbag body, be provided with the air cock on the gasbag body, be provided with the pressure safety valve on the gasbag body, the air cock the pressure safety valve all with the inside intercommunication of gasbag body, gasbag body material is PVC. The utility model discloses a PVC is as the material of pipeline shutoff gasbag, but concatenation department direct pressfitting is connected or the butt fusion, need not polish and add chemicals, reduces the processing technology degree of difficulty and complexity, improves production efficiency, and the PVC material is frivolous simultaneously, and the packing is small, and transportation and use are all comparatively convenient. Furthermore, the utility model discloses install pressure relief valve additional at the head end of gasbag, prevent that the gasbag from excessively inflating, play the safety protection effect.

Description

PVC shutoff gasbag

Technical Field

The utility model relates to an gasbag technical field, more specifically say, relate to a PVC shutoff gasbag.

Background

The pipeline plugging air bag is made of high-quality rubber or plastic, the pipeline section can be filled after the internal gas pressure reaches the specified requirement through inflation, and the water flow in the pipeline is cut off by using the friction force between the pipeline plugging air bag and the pipeline wall, so that the aim of no water seepage is fulfilled. Because it can cut off the water flow quickly on different pipe diameters, different planes and different positions, it is an ideal tool for pipeline treatment.

The existing pipeline plugging air bag is usually made of rubber, a small air bag is usually integrally formed, a larger air bag needs to be connected in a molding manner by cutting pieces, and a chemical agent needs to be polished and added in the connection process, so that the process is complex, the processing difficulty is high, and the production efficiency is low; meanwhile, the packaging structure has certain weight and thickness, is large in packaging volume, not light enough, and is complex in transportation, use and installation, so that the working efficiency is influenced.

In addition, current pipeline shutoff gasbag lacks the safety valve usually, under the condition that constructor operated the irregularity, easily leads to the gasbag to aerify excessively, has the potential safety hazard.

The above disadvantages need to be improved.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a PVC plugging air bag.

The utility model discloses technical scheme as follows:

the PVC plugging air bag comprises an air bag body, wherein an air faucet is arranged on the air bag body, a pressure safety valve is arranged on the air bag body, the air faucet and the pressure safety valve are communicated with the inside of the air bag body, and the air bag body is made of PVC.

Foretell PVC shutoff gasbag, the gasbag body includes head end gasbag cloth, whole body gasbag cloth and tail end gasbag cloth, whole body gasbag cloth respectively with head end gasbag cloth, tail end gasbag cloth sealing connection.

Furthermore, the sealing connection is high-frequency press fit connection or hot melt connection.

Further, sealing strips are arranged at the joints of the whole body air bag cloth, the head end air bag cloth and the tail end air bag cloth.

Furthermore, the shapes of the head end air bag cloth and the tail end air bag cloth are both circular.

Still further, the width of the sealing strip is 30 mm.

And further, the sealing strip is connected with the joint in a heat sealing way.

The PVC plugging air bag is characterized in that a pressure safety valve base is arranged on the air bag body, and the pressure safety valve is in threaded connection with the pressure safety valve base.

Further, a gasket is arranged between the pressure safety valve and the pressure safety valve base.

Foretell PVC shutoff gasbag, be provided with the air cock base on the gasbag body, the air cock with air cock base threaded connection.

The PVC plugging air bag is characterized in that the air bag body is provided with a lifting belt.

Furthermore, the lifting belt is connected with the air bag body in a heat sealing mode.

Furthermore, the top of gasbag body is provided with two and carries the area, the bottom of gasbag body is provided with two and carries the area.

Foretell PVC shutoff gasbag, be provided with the manometer on the gasbag body.

According to the above scheme the utility model discloses, its beneficial effect lies in, the utility model discloses a PVC is as the material of pipeline shutoff gasbag, but concatenation department direct pressfitting is connected or the butt fusion, need not polish and add chemicals, reduces the processing technology degree of difficulty and complexity, improves production efficiency, and the PVC material is frivolous simultaneously, and packing volume is little, and transportation and use are all comparatively convenient. Furthermore, the utility model discloses install pressure relief valve additional at the head end of gasbag, prevent that the gasbag from excessively inflating, play the safety protection effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a PVC plugging airbag;

FIG. 2 is an exploded view of the nozzle and nozzle base;

fig. 3 is an exploded view of the pressure relief valve and the pressure relief valve base.

Wherein, in the figures, the respective reference numerals:

1. head end airbag cloth; whole body airbag cloth;

3. tail air bag cloth; 4, sealing strips;

5. an air tap; 6, an air nozzle base;

7. a pressure relief valve; 8, a pressure safety valve base;

9. lifting the belt; a pressure relief valve gasket.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. The terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and should not be construed as limiting the technical solution.

A PVC plugging air bag is shown in figure 1 and comprises an air bag body, wherein the air bag body comprises a head end air bag cloth 1, a whole body air bag cloth 2 and a tail end air bag cloth 3, and the whole body air bag cloth 2 is respectively in sealing connection with the head end air bag cloth 1 and the tail end air bag cloth 3. Sealing strips 4 are arranged at the joints of the whole body air bag cloth 2, the head end air bag cloth 1 and the tail end air bag cloth 3. The air bag body is provided with a pressure relief hole and an air hole, and a pressure safety valve 7 is arranged on the pressure relief hole and an air tap 5 is arranged on the air hole. The air tap 5 and the pressure safety valve 7 are communicated with the interior of the air bag body. The air bag body is also provided with a lifting belt 9.

The air bag body adopts PVC high-strength wear-resistant air-tight cloth as a raw material. The PVC high-strength wear-resistant airtight fabric is a branch product in PVC coating cloth and is generally called as sandwich mesh cloth. PVC coating cloth has advantages such as nonflammable, high strength, weather resistance change and good geometric stability, the various complicated pipeline environment of adaptation that can be fine to when carrying out the cloth concatenation, need not polish and add chemical, only accomplish sealing connection through high frequency pressfitting connection or hot melt connection, plasticity is high, and production simple process is favorable to improving production efficiency. In addition, under the condition of the same size, the weight of the air bag made of the PVC high-strength wear-resistant air-tight cloth is only one third of that of the air bag made of rubber, and the volume of the air bag after being folded is only one fifth, so that the transportation and installation cost is greatly reduced, and the working efficiency is improved.

The head end air bag cloth 1 and the tail end air bag cloth 3 are both circular in shape, the whole body air bag cloth 2 is cylindrical, the head end air bag cloth 1, the whole body air bag cloth 2 and the tail end air bag cloth 3 are spliced from top to bottom to form a capsule type air bag cavity, and two end parts are spherical. The head end airbag cloth is integrally formed, the whole body airbag cloth is integrally formed, and the tail end airbag cloth is integrally formed. The whole body air bag cloth 2 is turned inwards and then is respectively connected with the head end air bag cloth 1 and the tail end air bag cloth 3 in a high-frequency pressing mode or in a hot melting mode, the sealing strip 4 arranged at the connecting position is a transparent sealing strip 4 with the width being about 30mm, and the sealing strip 4 is connected with the connecting position in a heat sealing mode. During the preparation, can customize the diameter of whole body gasbag cloth 2 according to the pipeline of required shutoff to the size of restriction gasbag body makes gasbag body diameter 10mm less than the pipeline internal diameter.

The left and right sides of the head end air bag cloth 1 and the left and right sides of the tail end air bag cloth 3 are both provided with lifting belts 9, and the lifting belts 9 are sewed on the joint sheets and are connected with the joint sheets in a heat sealing way.

As shown in FIG. 2, the air faucet 5 is connected with the air faucet base 6 by screw threads, and the air faucet base 6 is arranged on the air bag body, so that air can be inflated or exhausted into the air bag body through the air faucet 5. The air nozzle base 6 is made of rubber, and the air tightness of the air bag body is improved.

As shown in fig. 3, the pressure relief valve 7 is screwed to a pressure relief valve seat 8, and the pressure relief valve seat 8 is provided on the airbag body. When the air bag is inflated excessively, the internal pressure of the air bag is too high, the air is ejected out of the air bag by the pressure safety valve 7, and the air bag structure is prevented from being damaged due to excessive inflation, so that the safety problem is solved. Be provided with pressure relief valve gasket 10 between pressure relief valve 7 and the pressure relief valve base 8, pressure relief valve base 8 and pressure relief valve gasket 10 are the rubber material, are favorable to improving the gas tightness of gasbag body, make pressure relief valve 7 exert the safety protection effect better.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The PVC plugging air bag is characterized by comprising an air bag body, wherein an air faucet is arranged on the air bag body, a pressure safety valve is arranged on the air bag body, the air faucet and the pressure safety valve are communicated with the inside of the air bag body, and the air bag body is made of PVC.

2. The PVC plugging airbag of claim 1, wherein the airbag body comprises a head airbag fabric, a body airbag fabric and a tail airbag fabric, and the body airbag fabric is hermetically connected with the head airbag fabric and the tail airbag fabric respectively.

3. The PVC plugging airbag according to claim 2, wherein the sealing connection is a high-frequency press-fit connection or a hot-melt connection.

4. The PVC plugging airbag of claim 2, wherein sealing strips are arranged at the joints of the whole airbag cloth, the head airbag cloth and the tail airbag cloth.

5. A PVC occluding bladder as claimed in claim 4, wherein said sealing strip is heat sealed to said junction.

6. The PVC plugging airbag of claim 1, wherein a pressure safety valve base is arranged on the airbag body, and the pressure safety valve is in threaded connection with the pressure safety valve base.

7. A PVC occlusion bladder as in claim 6, wherein a gasket is provided between said pressure relief valve and said pressure relief valve seat.

8. The PVC plugging airbag of claim 1, wherein a lifting strap is arranged on the airbag body.

9. The PVC plugging airbag of claim 1, wherein an air faucet base is arranged on the airbag body, and the air faucet is in threaded connection with the air faucet base.

10. The PVC plugging airbag according to claim 1, wherein a pressure gauge is arranged on the airbag body.