CN210603757U

CN210603757U - Airtightness testing device

Info

Publication number: CN210603757U
Application number: CN201922044995.2U
Authority: CN
Inventors: 薛肇江; 左永蚬
Original assignee: Huirun Electrical Co ltd
Current assignee: Huirun Electrical Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-05-22
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses an airtight testing arrangement, include: a cylinder; the ventilation pressing block is detachably connected to the end part of the piston rod of the cylinder and used for moving along the vertical direction along with the piston rod; the air nozzle is detachably arranged on the side wall of the ventilating pressing block and is used for being connected with an external air pipe so as to realize the inflation of the inside of the ventilating pressing block; the bottom of the ventilating pressure block is provided with a ventilating groove which is arranged along the axial direction of the ventilating pressure block and used for allowing the gas in the gas nozzle to flow to the tested component, and a sealing connecting end which is used for being in contact with the tested component and being capable of keeping airtight. The air tightness testing device has the advantages of simple structure, convenient use, easy production and low manufacturing cost; simultaneously this airtight testing arrangement can make by survey subassembly atress even and guarantee to guarantee effectual leakproofness when being surveyed the part contact through being provided with the briquetting of ventilating fluting and sealed link, above-mentioned mode of setting up can improve airtight testing arrangement's application scope greatly.

Description

Airtightness testing device

Technical Field

The utility model relates to an airtight test technical field, in particular to airtight testing arrangement.

Background

At present, a plurality of parts have requirements on sealing performance, particularly the parts with requirements on gas sealing performance, and the parts need to be subjected to factory air tightness test when being shipped. Generally, an air tightness testing device in the prior art is complex in operation and low in accuracy, so that the working efficiency of an air tightness testing machine is reduced, part of the air tightness testing device cannot be used for carrying out air tightness testing on a torque converter assembly by water measurement, and leakage detection can be caused if leakage exists and cannot be reflected visually; in addition, the volumes of an inflation integrated switch and an inflation inlet of some airtight testing machines in the prior art are small, the airtight testing machine is only suitable for testing of specified parts, and the application range of the airtight testing machine is limited greatly.

Therefore, how to avoid the problem that the traditional airtight testing machine cannot test the airtightness of the large-caliber part is a technical problem to be solved by the technicians in the field at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an airtight testing arrangement, this airtight testing arrangement can guarantee with be surveyed when the subassembly contact keep airtight to can guarantee to be surveyed the accuracy of subassembly gas tightness test, this airtight testing arrangement can be used to the gas tightness test of heavy-calibre part simultaneously.

In order to achieve the above object, the utility model provides an airtight testing device, include:

a cylinder;

the air pressure block is detachably connected to the end part of the piston rod of the air cylinder and used for moving along the vertical direction along with the piston rod;

the air nozzle is detachably arranged on the side wall of the ventilating pressing block and is used for being connected with an external air pipe so as to realize the inflation of the inside of the ventilating pressing block;

the bottom of the ventilating pressure block is provided with a ventilating groove which is formed along the axial direction of the ventilating pressure block and used for allowing the gas in the gas nozzle to flow to the tested component, and a sealing connecting end which is used for being in contact with the tested component and being capable of keeping airtight.

Optionally, the seal connection end is provided with:

a first connection end located at the outer side;

the second connecting end is arranged on the inner side of the first connecting end, protrudes out of the first connecting end and is used for being attached to the inner side wall of the tested assembly;

and the sealing ring is positioned between the first connecting end and the second connecting end and is used for being contacted and propped against the upper end of the tested assembly so as to keep airtight.

Optionally, the venting compacts are in particular boss-like compacts.

Optionally, the cylinder further comprises a fixing frame for fixing and installing the cylinder, and the fixing frame comprises:

the first fixing plate is arranged along the horizontal direction and fixedly connected with a cylinder base of the air cylinder;

the two supporting rods are fixedly connected to the two ends of the first fixing plate respectively and used for supporting the first fixing plate, and the bottom ends of the supporting rods are fixedly connected with a supporting bottom plate.

Optionally, a water tank is arranged above the supporting bottom plate, and is used for placing the tested component to test air tightness.

Optionally, the inside of water tank is equipped with the support frame that is used for the fixed stay to be surveyed the subassembly, the support frame includes:

the center of the second fixing plate is provided with a through hole and can fixedly support the tested component, and the through hole is used for the tested component to pass through so as to be placed into the water tank;

and the four supporting columns are arranged between the second fixing plate and the supporting bottom plate and used for supporting the second fixing plate.

Optionally, an adjusting nut for adjusting the height of the venting press block is fixedly connected to the top end of the venting press block.

Optionally, the end of the piston rod is provided with a threaded connection section for being in fit connection with the adjusting nut and the top end of the venting press block.

Compared with the prior art, the utility model discloses to the different requirements of airtight test, designed airtight testing arrangement, specifically speaking, above-mentioned airtight testing arrangement includes cylinder, ventilative briquetting and air cock; the ventilation pressing block is detachably connected to the end part of a piston rod of the cylinder and used for moving along the vertical direction along with the piston rod, so that the tested component can be pressed tightly and air sealing can be kept; the air nozzle is detachably arranged on the side wall of the ventilating pressing block and is used for being connected with an external air pipe, so that the inside of the ventilating pressing block is inflated to enable the tested assembly to carry out air sealing test; furthermore, the bottom of the ventilating pressing block is provided with a ventilating slot and a sealing connecting end, wherein the ventilating slot is formed along the axial direction of the ventilating pressing block and is used for allowing the gas in the gas nozzle to flow into the tested component; when the ventilating pressing block moves downwards to press the upper end of the measured component, the sealing connecting end is used for being in contact with and abutting against the measured component and can keep airtight. Therefore, the air tightness testing device has simple structure, convenient use, easy production and low manufacturing cost; simultaneously this airtight testing arrangement can make by survey subassembly atress even and guarantee to guarantee effectual leakproofness when being surveyed the part contact through the briquetting of ventilating that is provided with fluting and sealed link of ventilating, in addition, air cock detachably sets up the lateral wall at the briquetting of ventilating to be convenient for outside tracheal installation and dismantlement, the above-mentioned application scope that sets up the mode and can improve airtight testing arrangement greatly.

Drawings

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

Fig. 1 is a schematic cross-sectional structure diagram of an air tightness testing device according to an embodiment of the present invention;

FIG. 2 is a partial enlarged view of portion A of FIG. 1;

fig. 3 is an assembly schematic diagram of the fixing frame, the air cylinder, the ventilating pressing block and the tested component in fig. 1.

Wherein:

1-a water tank, 2-a tested component, 3-a sealing ring, 4-a ventilating pressing block, 41-a first connecting end, 42-a second connecting end, 43-a ventilating groove, 5-an air nozzle, 6-an adjusting nut, 7-an air cylinder, 8-a fixing frame and 9-a supporting frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some 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.

The core of the utility model is to provide an airtight testing arrangement, this airtight testing arrangement can guarantee with by keeping airtight when surveying the subassembly contact to can guarantee to be surveyed the accuracy of subassembly gas tightness test, this airtight testing arrangement can be used to the gas tightness test of heavy-calibre part simultaneously.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic cross-sectional structure diagram of an air tightness testing device according to an embodiment of the present invention; FIG. 2 is a partial enlarged view of portion A of FIG. 1; fig. 3 is an assembly schematic diagram of the fixing frame, the air cylinder, the ventilating pressing block and the tested component in fig. 1.

The air tightness testing device provided by the embodiment of the utility model is mainly used for air tightness testing of delivered parts, and comprises an air cylinder 7, a ventilating pressing block 4 and an air nozzle 5; the air cylinder 7 comprises a cylinder seat and a piston rod, the piston rod is arranged downwards and can move up and down in a telescopic mode relative to the cylinder seat, the ventilating pressing block 4 is detachably connected to the end portion of the piston rod of the air cylinder 7, and the ventilating pressing block 4 is used for moving along the vertical direction along with the piston rod, so that the tested component 2 can be pressed tightly and air-tight sealing can be kept; the air tap 5 is detachably arranged on the side wall of the ventilating pressing block 4, and the air tap 5 is used for being connected with an external air pipe, so that the inside of the ventilating pressing block 4 is inflated, and the tested assembly 2 is used for carrying out air sealing test.

Meanwhile, the bottom of the ventilating pressing block 4 is provided with a ventilating slot 43 and a sealing connecting end, wherein the ventilating slot 43 is arranged along the axial direction of the ventilating pressing block 4 and is used for supplying gas in the gas nozzle 5 to flow into the tested component 2; when the vent pressing block 4 moves downwards to press the upper end of the measured component 2, the sealing connection end is used for being in contact with the measured component 2 and keeping air tightness. In addition, the side wall of the ventilating pressing block 4 is provided with a vent hole for installing the air faucet 5, the vent hole is communicated with the ventilating slot 43, and the air faucet 5 can be installed according to the prior art.

Therefore, the air tightness testing device is simple in structure, convenient to use, easy to produce and low in manufacturing cost; simultaneously this airtight testing arrangement can make by survey subassembly 2 atress even and guarantee to guarantee effectual leakproofness when being surveyed the part contact through being provided with the briquetting 4 of ventilating of fluting 43 and sealed link of ventilating, in addition, air cock 5 detachably sets up the lateral wall at the briquetting 4 of ventilating to be convenient for outside tracheal installation and dismantlement, above-mentioned mode of setting up can improve airtight testing arrangement's application scope greatly.

Further, the sealing connection end may be specifically provided with a first connection end 41, a second connection end 42 and the sealing ring 3, wherein the first connection end 41 is located at the outer side of the bottom of the venting pressing block 4; the second connecting end 42 is arranged on the inner side of the first connecting end 41 and protrudes out of the first connecting end 41, and the second connecting end 42 is used for being contacted and abutted with the inner side wall of the tested component 2; meanwhile, an installation groove for installing the sealing ring 3 is arranged between the first connecting end 41 and the second connecting end 42, and the sealing ring 3 is used for being contacted and abutted with the upper end of the tested component 2, so that air sealing can be maintained.

Above-mentioned sealing washer 3 specifically can set up to elastic sealing washer (rubber circle), and the height of sealing washer 3 can set up to between the height of first link 41 and the height of second link 42, the width of sealing washer 3 can set up to be greater than the width with surveyed subassembly 2 up end contact site, so, when the briquetting 4 compresses tightly surveyed subassembly 2 of ventilating, second link 42 can stretch into the inside of being surveyed subassembly 2, and the lateral wall that second link 42 is close to first link 41 can laminate with the inner wall of being surveyed subassembly 2, the bottom of sealing washer 3 offsets with the up end contact of being surveyed subassembly 2, and because sealing washer 3 has elasticity, can realize airtight effect under the prerequisite that sealing washer 3 keeps certain decrement.

Simultaneously, because the briquetting 4 detachably of ventilating connects in the piston rod tip of cylinder 7, can adjust the height of the briquetting 4 of ventilating through the relative position that changes briquetting 4 of ventilating and piston rod like this to guarantee that the sealing washer 3 is moderate in the decrement when compressing tightly the upper end of being surveyed subassembly 2, both can guarantee the seal, can guarantee again that sealing washer 3 can not crushed, repeatedly usable improves the life of sealing washer 3.

In addition, the above-mentioned ventilation pressing block 4 may be configured as a boss-shaped pressing block, wherein a protruding portion of the upper end of the ventilation pressing block 4 is connected with the piston rod.

Specifically, the air tightness testing device further comprises a fixing frame 8 for fixedly mounting the cylinder seat of the air cylinder 7, and the fixing frame 8 specifically comprises a first fixing plate, a supporting bottom plate and two supporting rods, wherein the first fixing plate is arranged along the horizontal direction and fixedly connected with the cylinder seat of the air cylinder 7, for example, a strip-shaped groove can be formed in the first fixing plate, and the cylinder seat can be connected with the strip-shaped groove through a bolt connecting assembly; two bracing pieces rigid coupling in the both ends of first fixed plate, two bracing pieces can be for the axis symmetry setting of briquetting 4 of ventilating, and two bracing pieces are used for supporting first fixed plate, and the supporting baseplate rigid coupling in the bottom of two bracing pieces. Of course, the number of the support rods can also be three or four, and the support rods can also be fixed on the support bottom plate through bolts.

In order to facilitate the airtight test of the tested component 2, a water tank 1 for placing the tested component 2 can be arranged above the supporting base plate, and the tested component 2 is placed into the water tank 1, so that the airtightness of the tested component 2 can be tested. Of course, the bottom of the water tank 1 may be fixedly connected to the supporting bottom plate, or may be directly placed on the supporting bottom plate.

In addition, a support frame 9 may be further disposed inside the water tank 1, the support frame 9 is used for fixedly supporting the tested component 2, specifically, the support frame 9 may include a second fixing plate and four support columns, that is, the support frame 9 may be specifically configured as a four-leg support table, and of course, the number of the support columns may also be two or three. The center of the second fixing plate is provided with a through hole, the second fixing plate can fixedly support the tested component 2, the through hole is used for allowing the tested component 2 to penetrate through so as to be placed into the water tank 1, the side wall of the second fixing plate can fix the tested component 2 through the bolt connecting component, and the side wall of the second fixing plate can not be unfolded one by one any more; the four supporting columns are arranged between the second fixing plate and the supporting base plate and are used for supporting the second fixing plate and the tested component 2 fixed on the second fixing plate.

In order to optimize the above embodiment, an adjusting nut 6 may be further fixedly connected to the top end of the ventilated pressing block 4, the adjusting nut 6 may be welded to the upper end of the ventilated pressing block 4, and the adjusting nut 6 is used to adjust the height of the ventilated pressing block 4; correspondingly, the end part of the piston rod is provided with a threaded connection section which is matched and connected with the top end of the adjusting nut 6 and the top end of the ventilating pressing block 4. In this way, the position of the venting pressure block 4 relative to the piston rod can be adjusted by turning the adjusting nut 6, so as to ensure the stability of the sealing performance.

In summary, the working principle of the air tightness testing device is as follows: after putting into the device with surveyed subassembly 2, open cylinder 7 to make the briquetting 4 of ventilating compress tightly surveyed subassembly 2, wherein sealing washer 3 can guarantee the leakproofness, ventilate two minutes, see whether the water in the water tank 1 has the bubble to produce, if have, explain to have gas leakage, if do not, explain that the gas tightness is good, can verify like this whether gas leakage is gone here by the junction of two parts in the subassembly 2 of being surveyed.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above that the utility model provides an airtight testing arrangement has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A hermetic test apparatus, comprising:

a cylinder (7);

the ventilating pressing block (4) is detachably connected to the end part of the piston rod of the cylinder (7) and used for moving along the vertical direction along with the piston rod;

the air nozzle (5) is detachably arranged on the side wall of the ventilating pressing block (4) and is used for being connected with an external air pipe so as to realize air inflation to the inside of the ventilating pressing block (4);

the bottom of the ventilating pressure block (4) is provided with a ventilating slot (43) which is formed along the axial direction of the ventilating pressure block and used for allowing the gas in the gas nozzle (5) to flow to the tested component (2) and a sealing connecting end which is used for being in contact with and abutting against the tested component (2) and can keep airtight.

2. The tightness testing device of claim 1, wherein said sealed connection end is provided with:

a first connection end (41) located on the outside;

the second connecting end (42) is arranged on the inner side of the first connecting end (41), protrudes out of the first connecting end (41), and is attached to the inner side wall of the tested component (2);

and the sealing ring (3) is positioned between the first connecting end (41) and the second connecting end (42) and is used for being in contact with and abutting against the upper end of the component (2) to be tested so as to keep air tightness.

3. The tightness testing device according to claim 2, characterized in that said venting compacts (4) are in particular boss-like compacts.

4. The tightness testing device according to claim 3, further comprising a fixing frame (8) for fixedly mounting said cylinder (7), said fixing frame (8) comprising:

the first fixing plate is arranged along the horizontal direction and fixedly connected with a cylinder base of the air cylinder (7);

5. The tightness test device according to claim 4, wherein a water tank (1) is provided above the supporting base plate for placing the tested component (2) therein to test tightness.

6. The tightness testing device according to claim 5, characterized in that the inside of said water tank (1) is provided with a support frame (9) for fixedly supporting the tested component (2), said support frame (9) comprising:

the center of the second fixing plate is provided with a through hole and can fixedly support the tested component (2), and the through hole is used for the tested component (2) to pass through so as to be placed into the water tank (1);

7. The tightness testing device according to any one of claims 1 to 6, wherein an adjusting nut (6) for adjusting the height of the venting pressure block (4) is fixedly connected to the top end of the venting pressure block (4).

8. The tightness testing device according to claim 7, characterized in that the end of the piston rod is provided with a threaded connection section for mating connection with the adjusting nut (6) and the top end of the venting pressure block (4).