CN219453193U - High negative pressure gas pipeline connection structure - Google Patents

Abstract

The utility model relates to a high negative pressure gas pipeline connecting structure which comprises a flange plate, a gas pipe, a corrugated pipe, a sleeve and a tightening sleeve, wherein the middle part of the flange plate is provided with a gas nozzle, the gas pipe is sleeved outside the gas nozzle and communicated with the gas nozzle, the gas pipe is inserted into the corrugated pipe, the end face of the flange plate is abutted to the end part of the corrugated pipe, the sleeve is screwed and sleeved outside the corrugated pipe, the flange plate is connected with the end part of the sleeve through a bolt, the tightening sleeve is sleeved on the corrugated pipe, and a gap exists between the inner wall of the tightening sleeve and the outer wall of the sleeve. The corrugated pipe is used as a protection pipe, the air pipe is arranged in the corrugated pipe to serve as a channel of high negative pressure air, the maximum negative pressure of the air can be transmitted to the inside of the corrugated pipe to be 100Kpa, the conveying capacity of the negative pressure air is improved, the sleeve and the tightening sleeve are arranged at the joint of the corrugated pipe and the negative pressure pump, the tightening sleeve is screwed at the outlet pipe of the negative pressure pump in a screwed mode, the sleeve is correspondingly inserted into the outlet pipe of the negative pressure pump, air leakage at the joint of the corrugated pipe and the negative pressure pump can be prevented, and the integral air tightness of an air passage is enhanced.

Description

High negative pressure gas pipeline connection structure

Technical Field

The utility model relates to the technical field of climbing equipment parts, in particular to a high negative pressure gas pipeline connecting structure.

Background

When the climbing device is used for climbing, the space between the attaching plate and the wall surface is pumped, so that the attaching plate is tightly attached to the wall surface, and the negative pressure pump for generating negative pressure is usually carried on the body by a user and is communicated with the attaching plate through a hose. We have applied for a 'corrugated pipe connection structure', application number is 202020697209.9, a corrugated pipe is used as a passage of high negative pressure gas, the whole compression resistance of the corrugated pipe is found to be poor in the use process, the corrugated pipe is easy to be flattened when the internal negative pressure gas circulates under the action of external atmospheric pressure, and secondly, when the corrugated pipe is directly used to be communicated with a negative pressure pump, the connection part has a gas leakage phenomenon, so that the negative pressure in a pipeline is reduced, and improvement is needed.

Disclosure of Invention

Based on this, it is necessary to provide a high negative pressure gas pipe connection structure in order to solve the above-described problems.

The utility model provides a high negative pressure gas piping connection structure, includes the ring flange, the trachea, the bellows, sleeve and lock ring sleeve, the ring flange middle part is provided with the air cock, the trachea suit is in the air cock outside, and communicates with the air cock, the trachea is pegged graft in the bellows, ring flange terminal surface and bellows tip butt, the sleeve is twisted soon the cover and is established in the bellows outside, the ring flange passes through bolt and sleeve end connection, lock ring sleeve cover is established on the bellows, there is the clearance between lock ring sleeve inner wall and the sleeve outer wall.

Preferably, the air tap is designed into a pagoda shape, and the joint of the air tap and the air pipe is smeared with sealant.

Preferably, one end of the sleeve, which is far away from the flange plate, is provided with a thickened portion, the corrugated pipe is internally provided with a lining opposite to the thickened portion, and the bolt penetrates through the thickened portion of the sleeve and the side wall of the corrugated pipe to be connected with the lining.

Preferably, a rounding design is carried out between the thickened part and the side wall of the sleeve, and a first O-shaped sealing ring is sleeved at the thickened part.

Preferably, a second O-shaped sealing ring is arranged at the joint of the flange plate and the sleeve.

The utility model has the advantages that: the corrugated pipe is used as a protection pipe, the air pipe is arranged in the corrugated pipe to serve as a channel of high negative pressure air, the maximum negative pressure of the air can be transmitted to the inside of the corrugated pipe to be 100Kpa, the conveying capacity of the negative pressure air is improved, the sleeve and the tightening sleeve are arranged at the joint of the corrugated pipe and the negative pressure pump, the tightening sleeve is screwed at the outlet pipe of the negative pressure pump in a screwed mode, the sleeve is correspondingly inserted into the outlet pipe of the negative pressure pump, air leakage at the joint of the corrugated pipe and the negative pressure pump can be prevented, and the integral air tightness of an air passage is enhanced.

Drawings

FIG. 1 is a schematic diagram of a connection structure of a high negative pressure gas pipeline according to an embodiment;

fig. 2 is an exploded schematic view of a high negative pressure gas pipeline connection structure.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, a high negative pressure gas pipeline connection structure comprises a flange plate 1, a gas pipe 2, a corrugated pipe 3, a sleeve 4 and a tightening sleeve 5, wherein a gas nozzle 11 is arranged in the middle of the flange plate 1, the gas pipe 2 is sleeved outside the gas nozzle 11 and is communicated with the gas nozzle 11, the gas pipe 2 is inserted into the corrugated pipe 3, the end face of the flange plate 1 is abutted to the end part of the corrugated pipe 3, the sleeve 4 is screwed and sleeved outside the corrugated pipe 3, the flange plate 1 is connected with the end part of the sleeve 4 through a bolt, the tightening sleeve 5 is sleeved on the corrugated pipe 3, and a gap exists between the inner wall of the tightening sleeve 5 and the outer wall of the sleeve 4. Specifically, in this embodiment, during use, the gas pipeline connection structure is communicated with a negative pressure pump (not shown in the figure) for conveying negative pressure gas generated by the negative pressure pump, wherein the flange plate 1 is installed at the end of the air pipe 2 and is inserted into the air pipe 2 by being provided with the air tap 11, and the flange plate 1 is used as a sealing element at the joint of the outlet pipe of the negative pressure pump and the air pipe 2, and is fixed and sealed to improve the air tightness. The bellows 3 is sleeved outside the air pipe 2, a gap exists between the air pipe 2 and the bellows 3, and the bellows is used as a protection pipe to prevent the air pipe 2 from being directly exposed to the outside, so that the service life is reduced. The sleeve 4 is additionally arranged at the end part of the corrugated pipe 3, the sleeve 4 is screwed on the outer side of the corrugated pipe 3, the air tightness between the sleeve 4 and the corrugated pipe 3 is good, and the sleeve is connected with the flange plate 1 at the end part by bolts, so that the sleeve is prevented from falling off. The tightening sleeve 5 is sleeved outside the corrugated pipe 3, and the inner wall of the tightening sleeve is provided with spiral lines for being in threaded connection with a negative pressure pump outlet pipe, so that the tightening sleeve is very convenient to assemble and disassemble. It can be known that the pipeline that this application designed is connected between negative pressure pump and attachment disc, and two pipeline connection structure mirror images are applied to the junction with negative pressure pump and attachment disc, and the bellows 3 cover is all adopted at the middle part and is established the structure of trachea 2.

As shown in fig. 1-2, the air tap 11 is designed into a pagoda shape, so that the air tap 11 is conveniently inserted into the air pipe 2 during assembly, and the joint of the air tap and the air pipe 2 is smeared with sealant, thereby improving the air tightness.

As shown in fig. 1-2, a thickened portion 41 is provided at one end of the sleeve 4 far away from the flange plate 1, a lining 6 is provided in the bellows 3 opposite to the thickened portion 41, and a bolt penetrates through the thickened portion 41 of the sleeve 4 and the side wall of the bellows 3 to be connected with the lining 6. Specifically, the inner liner 6 is used for supporting from the inside of the corrugated pipe 3, the port strength of the corrugated pipe 3 is improved, the inner liner 6 and the sleeve 4 are connected through bolts, and the inner liner 6 is reinforced to prevent loosening and falling.

As shown in fig. 1-2, a rounding design is performed between the thickened portion 41 and the side wall of the sleeve 4, and a first O-shaped sealing ring 7 is sleeved at the thickened portion 41. Specifically, after the sleeve 4 is inserted into the outlet pipe of the negative pressure pump, the thickened portion 41 is abutted against the end face of the outlet pipe, and the first O-shaped sealing ring 7 is extruded, so that the first O-shaped sealing ring is in interference fit between the thickened portion 41 and the outlet pipe, and the tightness of the joint of the outlet pipe of the negative pressure pump and the air passage is enhanced.

As shown in fig. 1, a second O-ring 8 is installed at the joint of the flange 1 and the sleeve 4, and specifically, the second O-ring 8 is in interference fit between the end face of the flange 1 and the sleeve 4, so as to enhance the tightness between the end faces of the flange 1 and the sleeve 4.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (5)

1. A high negative pressure gas pipeline connection structure, its characterized in that: including the ring flange, the trachea, the bellows, sleeve and lock ring sleeve, the ring flange middle part is provided with the air cock, the trachea suit is in the air cock outside to with the air cock intercommunication, the trachea is pegged graft in the bellows, ring flange terminal surface and bellows tip butt, the sleeve is twisted the cover soon and is established in the bellows outside, the ring flange passes through bolt and sleeve end connection, lock ring sleeve cover is established on the bellows, there is the clearance between lock ring sleeve inner wall and the sleeve outer wall.

2. The high negative pressure gas pipe connection structure according to claim 1, wherein: the air tap is designed into a pagoda shape, and the joint of the air tap and the air pipe is smeared with sealant.

3. The high negative pressure gas pipe connection structure according to claim 1, wherein: the one end that the sleeve was kept away from the ring flange is provided with the thickening portion, just be provided with the inside lining to the thickening portion in the bellows, the bolt runs through the thickening portion of sleeve and the lateral wall and the inside lining connection of bellows.

4. A high negative pressure gas pipe connection structure according to claim 3, wherein: and a rounding design is carried out between the thickened part and the side wall of the sleeve, and a first O-shaped sealing ring is sleeved at the thickened part.

5. The high negative pressure gas pipe connection structure according to claim 1, wherein: and a second O-shaped sealing ring is arranged at the joint of the flange plate and the sleeve.