CN213364155U

CN213364155U - Multivariable air tightness testing device

Info

Publication number: CN213364155U
Application number: CN202021856498.9U
Authority: CN
Inventors: 胡博志; 郑宏宇; 兰增金; 范勇华
Original assignee: Lanjiatang Biological Medicine Fujian Co ltd
Current assignee: Lanjiatang Biological Medicine Fujian Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-04
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a multivariable air tightness testing device in the technical field of sealing detection, which comprises a sealed cabin, wherein the top of the sealed cabin is provided with an opening, a plurality of isolation screen plates are vertically arranged in the sealed cabin, and the sealed cabin is divided into a plurality of isolation cavities by the isolation screen plates; the cang gai, can separate the sealed lid of opening tightly at the opening part of sealed storehouse, the top is equipped with the pneumatic valve of the inside and outside both sides of intercommunication, the inboard gland net of having fixed through the connecting rod, can enough detect whether the inside gas of packing material can leak the outflow, also can detect whether outside water can flow in the packing material, the leakproofness of detecting the packing material from two directions of business turn over, rivers have been increased through the impeller simultaneously, make the packing material take place slight striking in the sealed storehouse, and can also give the water heating in the sealed storehouse through the equipment base, change the temperature, more environmental variables, make the leakproofness of simulation packing material that this device can be more comprehensive in the in-service use.

Description

Multivariable air tightness testing device

Technical Field

The utility model relates to a sealed technical field that detects especially relates to a multivariable gas tightness testing arrangement.

Background

The tightness tester is also called as an air tightness detector or a leakage tester, and is mainly suitable for sealing tests of packaging bags, bottles, pipes, tanks, boxes and the like in the industries of food, pharmacy, medical instruments, daily chemicals, automobiles, electronic components, stationery and the like.

The sealing is relative, there is not absolute sealed package, there are some very high seal of precision to form the testing device now, the simple and visual seal tester is through vacuumizing the vacuum chamber, make the sample soaked in water produce the internal and external pressure difference, observe the gas escape situation in the sample, in order to judge the sealing performance of the sample, but the precision of this kind of testing device is not high, can only get the roughly situation sealed or not sealed, can't get the concrete proportion and numerical value of the sealing performance;

and the vacuum chamber is vacuumized, so that the internal and external pressure difference of the sample is generated, the sample shape recovery condition after the sample expands and releases the vacuum is observed, and the sealing performance of the sample is judged, so that a more accurate sealing numerical value can be obtained and can be used as data reference.

And the present leakproofness tester that uses in laboratory, only need know whether to leak just enough, also need audio-visual observation can, current laboratory is with sealed detection device through a sealed tubbiness cavity, fill water in its inside, then the packing material that will need the test is put into the aquatic, it is underwater to impress the test packing material through a lid, ensure that the packing material entire body is in under the surface of water, and this sealed tubbiness cavity top is the air, do not fill water, take out the air at top again, make the interior vacuum negative pressure that forms of sealed bucket, it has the thing outflow of gas or packing to observe packing material under water, if the sealed nonconforming of outflow description.

The environment of the tightness tester is a very ideal state, in the actual use process, the tightness of a packing object can be influenced by multiple factors such as logistics, environment, air pressure, temperature difference and the like, the tester can only test whether the object in the packing object leaks or not when negative pressure exists, and cannot have other detection capabilities, for example, whether the tightness changes or not when the object changes stably or whether external water reversely flows into the packing object or not can not be detected, and the existing tightness tester for the laboratory has the defect that the detection condition is too single and is not in line with the actual condition.

Based on this, the utility model designs a multivariable gas tightness testing arrangement to solve above-mentioned problem.

Disclosure of Invention

An object of the utility model is to provide a multivariable gas tightness testing arrangement, can enough detect whether the inside gas of packing material can leak the outflow, also can detect in outside water can flow into the packing material, from the leakproofness that two directions of business turn over detected the packing material, rivers have been increased through the impeller simultaneously, make the packing material take place slight striking in the sealed storehouse, and can also give the water heating in the sealed storehouse through the equipment base, change the temperature, more environmental variables, make the leakproofness of simulation packing material that this device can be more comprehensive in the in-service use.

The utility model discloses a realize like this: a multivariable hermeticity test apparatus comprising:

the top of the sealed bin is provided with an opening, a plurality of isolation screen plates are vertically arranged in the sealed bin, and the sealed bin is divided into a plurality of isolation cavities through the isolation screen plates;

the bin cover is tightly covered at the opening of the sealed bin in a sealing way which can be opened separately, the top of the bin cover is provided with an air valve communicated with the inner side and the outer side, and the inner side is fixed with a lower gland net through a connecting rod;

the output shaft of the driving motor is connected with an impeller which is fixedly suspended between the inner side of the bin cover and the lower gland net, and the impeller is arranged close to one side of the lower gland net without contact;

the device comprises a device base, wherein a controller and a micro air pump are arranged on the device base, an electric heating sheet is arranged at the top of the device base, the micro air pump is communicated with an air valve in a sealing mode through a vent pipe, and the micro air pump, the electric heating sheet, a driving motor and the air valve are all electrically connected with the controller.

Further, the sealed cabin has wrapped up the cask structure of silica gel blotter for the inner chamber, the sealed cabin is through keeping apart the even fan-shaped space that separates for a plurality of ability flowing water of otter board.

Furthermore, the bottom of the lower pressing cover net is also provided with a cushion pad, the cushion pad is an integral rubber pad made of silica gel, and the lower pressing cover net and the cushion pad are penetrated through by water permeable holes.

Further, the diameter range of the mesh holes and the water permeable holes of the isolation mesh plate is between 0.5cm and 3 cm.

Furthermore, the gap between the cushion pad at the bottom of the bin cover and the top of the isolation screen plate which is tightly covered does not exceed 2cm, and the gap between the lower cover pressing net and the side wall of the inner cavity of the sealed bin does not exceed 2 cm.

Further, the isolation mesh plate is a buffer rubber mat made of silica gel.

Further, the driving motor is a direct current waterproof motor.

The utility model has the advantages that: the utility model discloses a miniature air pump intercommunication in the equipment base is on the pneumatic valve to through miniature air pump to sealed storehouse evacuation or pressurization, make the underwater packing material of sealed storehouse can receive the change of negative pressure and malleation, can look over whether air or article in the packing material can ooze, also can see whether the water of packing material outside can permeate inside, this device does not need various calculation pressure differentials, also need not to observe the coefficient of expansion, can the intuitionally see the leakproofness of passing in and out two directions of packing material;

this device can also be through the electric heat piece that equipment base top was equipped with, come to the sealed cabin heating, make the ambient temperature of packing material change, simulate out the change in temperature difference, also can make rivers produce the rotation through driving motor, thereby with the packing material striking on keeping apart the otter board, and keep apart the otter board again and be the blotter, can only the striking can not hit badly, thereby make the packing material can be at the striking, under the multiple factor of pressure variation and temperature variation, two direction leakproofness of inspection business turn over packing material, it is more directly perceived to observe during the detection, simulation environment variable is many, do not need loaded down with trivial details leakproofness to calculate, be fit for the laboratory and use.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a top view of the sealing chamber of the present invention;

fig. 4 is a schematic view of the bin cover of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-sealed bin, 11-isolation screen plate, 2-bin cover, 21-lower cover pressing net, 211-water permeable hole, 22-connecting rod, 23-buffer cushion, 24-air valve, 3-driving motor, 31-impeller, 4-equipment base, 41-controller and 42-vent pipe.

Detailed Description

Referring to fig. 1 to 4, the present invention provides a technical solution: a multivariable hermeticity test apparatus comprising:

the top of the sealed bin 1 is provided with an opening, a plurality of isolation screen plates 11 are vertically arranged in the sealed bin, and the sealed bin is divided into a plurality of isolation cavities through the isolation screen plates 11;

the bin cover 2 is tightly covered at the opening of the sealed bin 1 in a sealing way which can be opened and separated, the top of the bin cover is provided with an air valve 24 communicating the inner side and the outer side, and the inner side is fixed with a lower pressing cover net 21 through a connecting rod 22;

the output shaft of the driving motor 3 is connected with an impeller 31 which is fixedly suspended between the inner side of the bin cover 2 and the lower gland net 21, and the impeller 31 is arranged close to one side of the lower gland net 21 without contact;

equipment base 4 is equipped with controller 41 and miniature air pump on it, the top is equipped with the electric heat piece, the sealed intercommunication of breather pipe 42 and pneumatic valve 24 is passed through to the miniature air pump, the electric heat piece, driving motor 3 and pneumatic valve 24 all are connected with controller 41 electricity, can enough detect whether the inside gas of packing material can leak the outflow, also can detect whether outside water can flow into in the packing material, detect the leakproofness of packing material from two directions of business turn over, rivers have been increased through impeller 31 simultaneously, make the packing material take place slight striking in sealed storehouse 1, and can also give the water heating in sealed storehouse 1 through the equipment base, change the temperature, more environmental variables, make the leakproofness of simulation packing material in the in-service use that this device can be more comprehensive.

The sealed cabin 1 is of a cylindrical structure, the inner cavity of the sealed cabin is wrapped by a silica gel cushion pad, the sealed cabin 1 is uniformly divided into a plurality of fan-shaped spaces capable of flowing water through the isolation screen plate 11, packages are limited in the fan-shaped spaces, flowing and winding are avoided, and slight impact can be generated on the isolation screen plate 11;

the bottom of the lower pressing cover net 21 is also provided with a buffer cushion 23, the buffer cushion 23 is an integral rubber cushion made of silica gel, the lower pressing cover net 21 and the buffer cushion 23 are penetrated through by the water permeable holes 211, so that the water flow can pass through the buffer cushion, the packages can be pressed below the water surface, and the rotation of the water flow can be transmitted through the water permeable holes 211;

the diameter ranges of the meshes of the isolation screen plate 11 and the water permeable holes 211 are both 0.5cm-3cm, water flow can pass through the isolation screen plate, and a detected packaged object cannot pass through the isolation screen plate;

the gap between the cushion 23 at the bottom of the covered bin cover 2 and the top of the isolation screen plate 11 is not more than 2cm, and the gap between the lower cover pressing net 21 and the side wall of the inner cavity of the sealed bin 1 is not more than 2cm, so that water flow is smooth, and a packaged object is isolated;

the isolation screen plate 11 is a buffer rubber mat made of silica gel, so that the isolation screen plate 11 can slightly impact, a package cannot be damaged by collision, and only the air tightness during slight impact is detected;

driving motor 3 is the waterproof motor of direct current, avoids the electric leakage, ensures safety, can also last normal operating splashing simultaneously, the change direction of rotation that simultaneously can also be convenient.

In a specific embodiment of the present invention:

the embodiment of the utility model provides a through providing a multivariable gas tightness testing arrangement, the utility model provides a technical problem be: 1. the existing tightness tester for the laboratory can only test whether gas leaks out of a package under the condition that the interior of a sealed bin 1 is vacuumized, cannot test whether water enters, but infers the tightness of two directions of entering and exiting the package through a one-way test, but cannot completely ensure that the gas in the package does not leak out, and the external water cannot enter the package; 2. the simulated environment variable is too single, the condition of negative pressure generated in the sealed cabin 1 can only be simulated, more actual environment variables exist, the existing tightness testing device cannot realize simulation, and the sealing performance of the packing material in actual use cannot be ensured.

The realized technical effects are as follows: 1. through the miniature air pump intercommunication in the equipment base 4 on the pneumatic valve to through miniature air pump to 1 evacuation in sealed storehouse or pressurization, make 1 underwater packing material in sealed storehouse can receive the change of negative pressure and malleation, can look over whether air or article in the packing material can ooze, also can see whether the outside water of packing material can permeate inside, this device does not need various calculation pressure differentials, also need not to observe the inflation coefficient, can audio-visually see the leakproofness of two directions of business turn over packing material.

2. The device can also heat the sealed cabin 1 through the electric heating sheet arranged at the top of the equipment bottom 4, so that the water temperature in the sealed cabin 1 is increased, only the highest ambient temperature is required to be increased, the temperature can be set to be 45 ℃, the ambient temperature of a packing material is changed, the temperature difference change is simulated, the impeller 31 can be rotated through the rotation of the driving motor 3 to drive the water flow to flow, the water can pass through the lower gland net 21 and the isolation net plate 11 but the packing material can not pass through, so that the packing material is impacted on the isolation net plate 11, the isolation net plate 11 is a cushion pad, the packing material can only be impacted and can not be damaged, the tightness of the packing material in and out in two directions can be checked under various factors of impact, pressure change and temperature change, the observation is more visual during the detection, and the simulation environment variables are more, does not need complicated sealing calculation and is suitable for laboratories.

The embodiment of the utility model provides an in technical scheme for solving above-mentioned problem, the general thinking is as follows:

for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.

The utility model discloses when the preparation, through sealed storehouse 1, cang gai 2 and equipment base 4 of the leakproofness tester that uses at present, and this is the current device of controller 41 and breather pipe 42, increase the miniature air pump that can bleed and aerify in equipment base 4, and communicate miniature air pump and cang gai 2's pneumatic valve 24 through breather pipe 42, pneumatic valve 24 is the solenoid valve, through controller 41 control, cang gai 2 can be opened with sealed storehouse 1 separation completely, sealed storehouse 1 inner chamber has increased a plurality of isolation otter boards 1, isolation otter board 1 separates sealed storehouse 1 into a plurality of vertical sector spaces, as shown in figure 2, and the even a plurality of through holes that are equipped with in the isolation otter board 1, ensure that rivers can hinder smooth flow basically, and isolation otter board 1 is made of silica gel, pliable and tough elasticity has, good chemical properties again, still corrosion-resistant, the sealing structure can be used as a good buffer cushion, and can not be damaged due to reaction with leaked substances, buffer sealing gaskets are added at the bottom and the side wall in the sealing bin 1, and a buffer cushion 23 made of silica gel is added at the bottom of the lower pressing screen plate 21, so that packages can not be damaged by collision, and can bear some collision;

the inner side of the bin cover 2 is fixed with a driving motor 3 of a direct current waterproof motor, one side of the bin cover 2 in the sealed bin 1 is the inner side when the bin cover 2 is covered, the direct current waterproof motor can prevent water and cannot be damaged by splashed water drops in the sealed bin 1, the direct current waterproof motor is direct current and cannot cause electric conduction danger, the sealed bin 1 and the bin cover 2 are made of glass, the direct current waterproof motor has good insulating property and avoids danger, the direct current motor has the advantages that the rotating direction of the motor is changed by changing the direction of current, the rotating direction of the driving motor 3 is changed by intermittently changing the circuit, so that the impeller 31 rotates forwards or backwards, the water flow in the sealed bin 1 is changed, the packing materials can be driven to impact on the isolation screen plate 11 in a reciprocating manner back and forth in the isolated sealed bin 1, and the bottommost part of the bin cover 2 is fixed with a lower cover pressing net 21 through a connecting rod 22, when the bin cover 2 is covered, the lower press cover net 21 is ensured to be capable of pressing the packing materials to the water surface, so that the water level in the sealed bin 1 is required to submerge the lower press cover plate 21 and the impeller 31, the gap between the lower press cover net 21 and the top of the isolation net plate 11 is not more than 2cm, the packing materials are ensured not to move from the gap between the lower press cover net 21 and the isolation net plate 11, therefore, the impeller is protected by the lower pressing cover plate 21, the impeller cannot be stirred, wound and impacted with the packing, the diameter of the lower pressing cover plate 21 is smaller than the diameter of the inner cavity of the sealed bin 1 by 2cm, the detected packing is ensured to move only in the positioned isolation screen plate 11, the top of the equipment base 4 is also required to be added with an electric heating sheet for heating the sealed cabin 1 to provide stable environment variables for the packing materials, and the micro air pump, the electric heating sheet, the driving motor 3 and the air valve 24 are controlled by the controller 41, so that various inspection environment variables of the device can be controlled by the controller 41;

it should be noted that all seted up the hole 211 of permeating water on blotter 23 and the lower gland plate 21, as shown in fig. 4, the hole 21 of permeating water can pass blotter 23 and lower gland plate 21 simultaneously from top to bottom a hole for blotter 23 and lower gland plate 21 are penetrating from top to bottom, and water can pass through, and the hole 211 of permeating water quantity will be more even, ensures that impeller 31's rotation rivers can transmit sealed cabin 1 bottom, need with the packing material that detects follow rivers and wave slight striking can.

When the utility model is used, firstly, a detection packing material is put into a fan-shaped cavity between an isolation screen plate 11 and the isolation screen plate 11 of a sealed bin 1, then cooler water is poured into the sealed bin 1 to simulate the environmental temperature in a refrigerator car, generally, the temperature is 0 ℃ to-8 ℃, then a bin cover 2 is covered to ensure sealing, the packing material is completely submerged by the water by pressing the cover net 21 downwards, a driving motor 3 is started to drive an impeller 31 to drive water flow, meanwhile, the sealed bin is vacuumized for a period of time by a miniature air pump of a controller 41 control equipment base 4 to pressurize, whether the packing material has substances or bubbles to flow out is observed, whether the water in the sealed bin 1 can enter the packing material is also observed, then an electric heating sheet is controlled to heat the bottom of the sealed bin 1, so that the internal water temperature is raised to 45 ℃, and the driving motor 3 and the miniature air pump 4 continue to operate simultaneously, the tightness of the packing material is checked, the monitoring is convenient, whether the leakage is visible or not is achieved, the simulated environment variable is increased and is more convenient, and the packing material cannot be damaged by impact.

The miniature air pump is a gas conveying device which has small volume and gaseous working medium and is mainly used for multiple purposes such as gas sampling, gas circulation, vacuum adsorption, vacuum pressure maintaining, air suction, air inflation, pressurization and the like.

The micro air pump is divided into the following parts according to the purposes: a micro negative pressure pump, a micro vacuum pump, a micro gas circulating pump, a micro gas sampling pump, a micro inflating pump, a micro air suction pump, a micro air pumping and inflating dual-purpose pump and the like; the miniature air pump used in the device is an inflation and inflation dual-purpose pump.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A multivariable hermeticity test apparatus, comprising:

the top of the sealed bin (1) is provided with an opening, a plurality of isolation screen plates (11) are vertically arranged in the sealed bin, and the sealed bin is divided into a plurality of isolation cavities through the isolation screen plates (11);

the bin cover (2) is tightly covered at the opening of the sealed bin (1) in a sealing way which can be opened and separated, the top of the bin cover is provided with an air valve (24) which is communicated with the inner side and the outer side, and the inner side of the bin cover is fixed with a lower cover pressing net (21) through a connecting rod (22);

a driving motor (3), an output shaft of which is connected with an impeller (31) and is fixedly suspended between the inner side of the bin cover (2) and the lower gland net (21),

the impeller (31) is arranged close to one side of the lower gland net (21) without contact;

the device comprises a device base (4), wherein a controller (41) and a micro air pump are arranged on the device base, an electric heating sheet is arranged at the top of the device base, the micro air pump is communicated with an air valve (24) in a sealing mode through an air pipe (42), and the micro air pump, the electric heating sheet, a driving motor (3) and the air valve (24) are all electrically connected with the controller (41).

2. The multivariable hermeticity test device of claim 1, wherein: sealed storehouse (1) has wrapped up the cask structure of silica gel blotter for the inner chamber, sealed storehouse (1) is a plurality of fan-shaped spaces that can the flowing water through keeping apart the even partition in otter board (11).

3. The multivariable hermeticity test device of claim 1, wherein: the bottom of lower gland net (21) has still set up blotter (23), blotter (23) are the whole cushion of making by silica gel, lower gland net (21) and blotter (23) are all run through by water-permeable hole (211).

4. A multivariable hermeticity testing apparatus as claimed in claim 3, wherein: the diameter ranges of the meshes of the isolating net plate (11) and the water permeable holes (211) are between 0.5cm and 3 cm.

5. A multivariable hermeticity testing apparatus as claimed in claim 3, wherein: the gap between the cushion pad (23) at the bottom of the bin cover (2) and the top of the isolation screen plate (11) which are tightly covered is not more than 2cm, and the gap between the lower cover pressing net (21) and the side wall of the inner cavity of the sealed bin (1) is not more than 2 cm.

6. The multivariable hermeticity test device of claim 1, wherein: the isolation mesh plate (11) is a buffer rubber mat made of silica gel.

7. The multivariable hermeticity test device of claim 1, wherein: the driving motor (3) is a direct-current waterproof motor.