CN218066930U

CN218066930U - Pump body gas tightness detection device

Info

Publication number: CN218066930U
Application number: CN202222059141.3U
Authority: CN
Inventors: 董宝英; 郑继忠; 郭福秀
Original assignee: Tianjin Tong Zhe Technology Development Co ltd
Current assignee: Tianjin Tong Zhe Technology Development Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-12-16
Anticipated expiration: 2032-08-05

Abstract

The utility model provides a pump body gas tightness detection device belongs to gas tightness detection technical field, and this gas tightness detection device contains test assembly and control assembly, test assembly contains connecting piece, transition piece, observation piece and air extractor, the transition piece is fixed communicate in the connecting piece, observe the fixed intercommunication of piece in the connecting piece, the air extractor communicate in the transition piece is kept away from the one end of connecting piece, control assembly contains fixed block, slider and spring, fixed block fixed connection in the transition piece, slider fixed connection in the fixed block, the spring set up in on the slider, improve to a certain extent that current pump body gas tightness detection device may lead to the sealed cowling slippage and reduce because of the ageing gas tightness that causes of sealed cowling because of the pressure problem in the testing process, influence the problem of testing result.

Description

Pump body gas tightness detection device

Technical Field

The utility model relates to an air tightness detects technical field, particularly, relates to a pump body gas tightness detection device.

Background

Among the prior art, for example, the publication number is CN210243120U discloses a pump body gas tightness detection device, including sealed tube and air exhauster body, the outer wall of sealed tube one end is fixed with the seal cover, the sealed tube is kept away from the integrative pressure pipe that is provided with of outer wall of seal cover one end, the inside cavity of pressure pipe, and the inside middle part department in pressure pipe installs the slider of rubber material, the sealed tube is kept away from the integrative closing plate that sets up of one end of seal cover, the middle part department that sealed tube one side was kept away from to the closing plate is fixed with the trachea, the gas pocket has been seted up to tracheal outer wall symmetry, tracheal outer wall has cup jointed the sealed cowling.

Above-mentioned scheme, cooperation through above each device is used, can audio-visually judge the gas tightness of pump body, and this device simple structure, do not have accurate electronic components, can save the trouble of later stage maintenance, however, at first the sealed cowling is for cup jointing on the trachea, probably lead to the sealed cowling slippage because of pressure problem in the testing process, and again, the sealed cowling adopts the rubber material, and the gas pocket department of seting up on the trachea, the sealed cowling can produce deformation, in the past for a long time, easily cause the sealed cowling ageing, make the gas tightness reduce, influence the testing result.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a pump body gas tightness detection device aims at improving current pump body gas tightness detection device and probably leads to the sealed cowling slippage and causes the gas tightness to reduce because of the sealed cowling is ageing in the testing process because of pressure problem, influences the problem of testing result.

The utility model discloses a realize like this:

a pump body air tightness detection device comprises a test component and a control component.

The testing assembly comprises a connecting piece, a transition piece, an observation piece and an air pump, wherein the transition piece is fixedly communicated with the connecting piece, the observation piece is fixedly communicated with the connecting piece, and the air pump is communicated with one end, far away from the connecting piece, of the transition piece.

The control assembly comprises a fixed block, a sliding piece and a spring, the fixed block is fixedly connected with the transition piece, the sliding piece is fixedly connected with the fixed block, and the spring is arranged on the sliding piece.

Utilize the sealing connection between connecting piece, transition piece and the air extractor, then use the air extractor to bleed for the inside negative pressure that forms of pump body and connecting piece, transition piece utilizes the cooperation between that slider, spring and the fixed block, forms the break-make to the connecting piece and the pump body, makes the air extractor can close behind connecting piece and the inside negative pressure that forms of the pump body, whether up to standard through observing the gas tightness of observing the piece and judging the pump body.

The utility model discloses an in an embodiment, the connecting piece contains connecting pipe and relief valve, the relief valve fixed communicate in the connecting pipe lateral wall.

The utility model discloses an in the embodiment, the one end and the pump body intercommunication of connecting pipe, the connecting pipe with the rubber ring has been cup jointed to the one end lateral wall of pump body intercommunication.

The utility model discloses an in one embodiment, the transition piece contains transition pipe and reducing pipe, transition pipe symmetry set up in reducing pipe both ends, the symmetry sets up the transition pipe with the fixed intercommunication of reducing pipe, the fixed intercommunication in of one end of transition pipe in the connecting pipe is kept away from the one end of the pump body.

The utility model discloses an in an embodiment, it contains communicating pipe and slider to survey the piece, communicating pipe fixed communicate in the connecting pipe lateral wall, communicating pipe is L shape design, keeping away from communicating pipe the one end of connecting pipe is sealed, the slider, with the inner wall sliding fit of communicating pipe.

In an embodiment of the present invention, the input of the air pump and the transition pipe are kept away from the one end of the pump body is communicated in a sealing manner.

The utility model discloses an in the embodiment, the fixed block symmetry sets up, fixed block fixed connection in the transition inside pipe wall, just evenly be provided with the through-hole on the fixed block.

The utility model discloses an in one embodiment, the slider contains connecting rod and piston, the both ends of connecting rod respectively with the fixed block fixed connection of symmetry setting, the piston slide cup joint in the connecting rod, the piston lateral wall with the inner wall laminating of reducing pipe reducing section.

The beneficial effects of the utility model are that: the utility model discloses a pump body gas tightness detection device that above-mentioned design obtained improves current pump body gas tightness detection device to a certain extent and probably leads to the sealed cowling slippage and causes the gas tightness to reduce because of the sealed cowling is ageing in the testing process because of pressure problem, influences the problem of testing result.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic overall structure diagram of a pump body airtightness detection device according to an embodiment of the present invention;

fig. 2 is an exploded view of a partial structure of a pump body airtightness detection apparatus according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of a test assembly according to an embodiment of the present invention;

fig. 4 is an exploded view of a control assembly according to an embodiment of the present invention.

In the figure: 100. testing the component; 110. a connecting member; 111. a connecting pipe; 112. a pressure relief valve; 113. a rubber ring; 120. a transition piece; 121. a transition duct; 122. a reducer pipe; 130. an observation member; 131. a communicating pipe; 132. a slider; 140. an air extractor; 200. a control component; 210. A fixed block; 220. a slider; 221. a connecting rod; 222. a piston; 230. a spring.

Detailed Description

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: a pump body airtightness detection device comprises a test assembly 100 and a control assembly 200.

Referring to FIG. 2, the test assembly 100 includes a connecting member 110, a transition piece 120, a sight piece 130, and an air extractor 140, wherein the transition piece 120 is fixedly connected to the connecting member 110, the sight piece 130 is fixedly connected to the connecting member 110, and the air extractor 140 is connected to an end of the transition piece 120 away from the connecting member 110.

Referring to fig. 2-3, in some specific embodiments, the connecting member 110 includes a connecting tube 111 and a pressure relief valve 112, the pressure relief valve 112 is fixedly connected to a side wall of the connecting tube 111, so as to facilitate pressure relief of the pump body and the inside of the connecting tube 111 after detection is completed, one end of the connecting tube 111 is connected to the pump body, the side wall of the connecting tube 111 connected to the pump body is sleeved with a rubber ring 113, so as to facilitate better sealing connection, the transition piece 120 includes a transition tube 121 and a reducer tube 122, the transition tube 121 is symmetrically disposed at two ends of the reducer tube 122, the transition tube 121 and the reducer tube 122 are symmetrically disposed and fixedly connected, one end of the transition tube 121 is fixedly connected to one end of the connecting tube 111 far from the pump body, the observation piece 130 includes a communicating tube 131 and a slider 132, the communicating tube 131 is fixedly connected to a side wall of the connecting tube 111, the communicating tube 131 is in an L-shaped design, one end of the communicating tube 131 far from the connecting tube 111 is sealed, the slider 132 is in sliding fit with an inner wall of the communicating tube 131, so as to form a communicating tube, and an input end of the air pump 140 is hermetically connected to one end of the transition tube 121 far from the pump body.

Referring to fig. 4, the control assembly 200 includes a fixing block 210, a sliding member 220 and a spring 230, the fixing block 210 is fixedly connected to the transition member 120, the sliding member 220 is fixedly connected to the fixing block 210, and the spring 230 is disposed on the sliding member 220.

Referring to fig. 4, in some specific embodiments, the fixing blocks 210 are symmetrically disposed, the fixing blocks 210 are fixedly connected to the inner wall of the transition pipe 121, and the fixing blocks 210 are uniformly provided with through holes for facilitating air flow circulation, the sliding member 220 includes a connecting rod 221 and a piston 222, two ends of the connecting rod 221 are respectively fixedly connected to the symmetrically disposed fixing blocks 210, the piston 222 is slidably sleeved on the connecting rod 221, and a side wall of the piston 222 is attached to the inner wall of the reducer section of the reducer pipe 122 for facilitating sealing between the piston and the reducer pipe 122.

It should be noted that the spring 230 is sleeved between the piston 222 and the fixed block 210 near one end of the air extractor 140.

The working principle is as follows: when the device is used, the connecting pipe 111 is connected with the pump body in a sealing way through the rubber ring 113, the air extractor 140 is opened to extract air, and because the pump body, the connecting pipe 111, the transition pipe 121 and the reducer pipe 122 are communicated in a sealing way, negative pressure is formed in a cavity communicated at this time (if the air tightness of the pump body is good), and because the communicating pipe 131 is communicated with the connecting pipe 111, a communicating vessel is formed, according to the principle of the communicating vessel, when negative pressure is formed among the pump body, the connecting pipe 111, the transition pipe 121 and the reducer pipe 122, the slider 132 is driven to move in the communicating pipe 131 by the action of the left and right air pressure of the communicating pipe 131 tending to balance, and meanwhile, because of the air extractor 140 extracts air, the piston 222 which is originally pressed against the left side of the reducer pipe 122 by the elastic force of the spring 230 to form a sealing state moves to the right side to extrude the spring 230, meanwhile, a channel is formed between the reducer pipe 122 and the air extractor 140 on the right side, after the negative pressure in the whole cavity reaches a certain value, the air extractor 140 is stopped, at this time, under the elastic force of the spring 230, the piston 222 is forced to move along the connecting rod 221 towards the direction far away from the air extractor 140 until the inner wall of the reducer section of the reducer pipe 122 is tightly abutted, so that a closed cavity is formed between the left side of the reducer pipe 122 and the transition pipe 121, the connecting pipe 111, the communicating pipe 131 and the pump body, and at this time, negative pressure still exists in a new sealed cavity (under the condition that the air tightness of the pump body is good), according to the principle of a communicating device, the air pressure at the two ends of the sliding block 132 is consistent under the sealed environment, so that the sliding block can not slide any more, and if the air tightness of the pump body is not good, the negative pressure in the new sealed cavity tends to be balanced with the outside under the action of the external atmospheric pressure, similarly, under the communicating vessel principle, slider 132 at this moment is unanimous for guaranteeing the atmospheric pressure at communicating pipe 131 both ends, it can take place the displacement once more in communicating pipe 131, reset, whether take place the displacement through observing slider 132 and judge whether qualified in the gas tightness of the pump body in communicating pipe 131, if the pump body gas leakage, can not form the negative pressure in the cavity that communicates each other, slider 132 can not take place the displacement simultaneously, it can be understood, the gas tightness of the pump body is poor more, the speed that slider 132 resets is fast more, concrete displacement volume size, then with the length of communicating pipe 131 of chooseing for use, the internal diameter is relevant with the initial position of slider 132 in, after finishing using, form normal pressure in the cavity that will communicate each other through relief valve 112, then demolish can.

It should be noted that the specific model specifications of the pressure relief valve 112, the air extractor 140 and the spring 230 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. A pump body airtightness detection device is characterized by comprising

The test assembly (100) comprises a connecting piece (110), a transition piece (120), a observation piece (130) and an air extractor (140), wherein the transition piece (120) is fixedly communicated with the connecting piece (110), the observation piece (130) is fixedly communicated with the connecting piece (110), and the air extractor (140) is communicated with one end, far away from the connecting piece (110), of the transition piece (120);

the control assembly (200), the control assembly (200) contains fixed block (210), slider (220) and spring (230), fixed block (210) fixed connection in transition piece (120), slider (220) fixed connection in fixed block (210), spring (230) set up in on slider (220).

2. The pump body airtightness detection apparatus according to claim 1, wherein the connection member (110) includes a connection pipe (111) and a relief valve (112), and the relief valve (112) is fixedly communicated with a side wall of the connection pipe (111).

3. The pump body airtightness detection device according to claim 2, wherein one end of the connection pipe (111) is in communication with the pump body, and a rubber ring (113) is sleeved on a side wall of one end of the connection pipe (111) in communication with the pump body.

4. The pump body airtightness detection apparatus according to claim 3, wherein the transition piece (120) includes a transition pipe (121) and a reducer pipe (122), the transition pipe (121) is symmetrically disposed at two ends of the reducer pipe (122), the symmetrically disposed transition pipe (121) and the reducer pipe (122) are fixedly communicated, and one end of the transition pipe (121) is fixedly communicated with one end of the connection pipe (111) far away from the pump body.

5. The pump body airtightness detection apparatus according to claim 4, wherein the observation member (130) includes a communication pipe (131) and a slider (132), the communication pipe (131) is fixedly communicated with a side wall of the connection pipe (111), the communication pipe (131) is designed in an L shape, an end of the communication pipe (131) away from the connection pipe (111) is sealed, and the slider (132) is in sliding fit with an inner wall of the communication pipe (131).

6. The pump body airtightness detection apparatus according to claim 4, wherein an input end of the air pump (140) is in sealed communication with an end of the transition pipe (121) that is remote from the pump body.

7. The pump body airtightness detection device according to claim 5, wherein the fixing blocks (210) are symmetrically arranged, the fixing blocks (210) are fixedly connected to the inner wall of the transition pipe (121), and through holes are uniformly formed in the fixing blocks (210).

8. The pump body airtightness detection apparatus according to claim 7, wherein the sliding member (220) includes a connecting rod (221) and a piston (222), two ends of the connecting rod (221) are respectively and fixedly connected to the symmetrically disposed fixing blocks (210), the piston (222) is slidably sleeved on the connecting rod (221), and a side wall of the piston (222) is attached to an inner wall of the reducer section of the reducer pipe (122).