CN116878745B - Jar gas tightness detection device - Google Patents
Jar gas tightness detection device Download PDFInfo
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- CN116878745B CN116878745B CN202311133620.8A CN202311133620A CN116878745B CN 116878745 B CN116878745 B CN 116878745B CN 202311133620 A CN202311133620 A CN 202311133620A CN 116878745 B CN116878745 B CN 116878745B
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- elastic ring
- vent pipe
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 114
- 230000007246 mechanism Effects 0.000 claims abstract description 93
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000009423 ventilation Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000005299 abrasion Methods 0.000 abstract description 6
- 235000013305 food Nutrition 0.000 description 19
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 235000013324 preserved food Nutrition 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000207961 Sesamum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of air tightness detection, and particularly discloses a tank air tightness detection device, wherein an air pipe is arranged along the height direction of a tank, a sealing assembly comprises a cover plate and a sealing mechanism which are sequentially arranged on the air pipe from top to bottom, the sealing mechanism is provided with a plurality of air delivery channels uniformly distributed along the circumferential direction of the tank, the air delivery channels are communicated with the air pipe, and a first rod is in sliding fit with the air delivery channels; one end of the first rod, which is away from the vent pipe, is movably connected with a pressing rod, one side of the pressing rod, which is away from the vent pipe, is movably connected with an elastic ring, an air bag is filled between the elastic ring and the pressing rod, the air bag is communicated with the first rod, and the top of the elastic ring is attached to the bottom of the cover plate; the output end of the linear driving device is movably connected with the cover plate, and the linear driving device is suitable for driving the cover plate to move along the height direction of the pot. The air tightness detection device for the cans does not need manual labor-consuming operation, reduces abrasion to the detection head, prolongs the service life of the detection device and improves the detection efficiency.
Description
Technical Field
The invention relates to the technical field of air tightness detection, in particular to a tank air tightness detection device.
Background
Packaging cans currently used in the market for solid particulate and powdery products (e.g., sesame paste, milk powder, protein powder, etc.) are generally metal cans. The air tightness of canned food determines the quality and qualification rate of canned food, so before the canned food is stored, the air tightness of a metal can needs to be detected, thereby avoiding the pollution and deterioration of food in the can caused by air leakage of the food can and reducing the qualification rate of the product.
The Chinese patent document with publication number of CN205580684U discloses a quick detection device for the air tightness of a food can, when the quick detection device for the air tightness of the food can is used, an air compressor is started, high-pressure air is led to a detection head through an air pipe, an operator plugs the detection head into a can opening of the food can and then pulls the detection head back, so that the detection head is plugged on the can opening of the food can, at the moment, the high-pressure air is gradually led into the food can, the food can is placed in a detection water tank, the operator rotates the food can back and forth, whether air bubbles are emitted from the periphery of the food can due to air leakage or not is observed, and if no air bubbles are emitted, the situation that the food can has no air leakage is indicated; if bubbles emerge, the food can is indicated to be air-leaking. The device can rapidly detect the air tightness of the food cans to be canned, avoid the microbial contamination and deterioration of foods in the cans caused by air leakage after the foods are canned, and is beneficial to further improving the qualification rate and quality of the food cans. But at the in-process that detects food jar gas tightness, mainly seal the jar mouth through the elastic sealing plate, the size of elastic sealing plate needs to be greater than the jar mouth size that detects the jar for the elastic sealing plate has the holding power all the time to jar inner wall, in order to guarantee sealed effect, before detecting beginning and after detecting, need with the elastic sealing plate stopper in the food jar and pull out it from the food jar, the operation is relatively laborious, and comparatively loaded down with trivial details, and the elastic sealing plate continuously offsets with jar inner wall, receive the frictional force along jar direction of height for a long time, the wearing and tearing to the detection head is great after detecting many times, cause the life of detection head to reduce, detection efficiency is low.
Disclosure of Invention
The invention provides a tank air tightness detection device, which aims to solve the problems of relatively laborious detection operation, larger abrasion of a detection head, low service life and low detection efficiency in the related art.
The invention relates to a tank air tightness detection device which is used for detecting the air tightness of a tank and comprises a shell, a vent pipe, a sealing assembly and a linear driving device; the sealing assembly comprises a cover plate and a sealing mechanism which are sequentially arranged on the vent pipe from top to bottom, the sealing mechanism comprises a first rod, a pressing rod, an air bag and an elastic ring, the sealing mechanism is provided with a plurality of air delivery channels uniformly distributed along the circumferential direction of the pot, the air delivery channels are arranged along the radial direction of the pot, the air delivery channels are communicated with the vent pipe, the first rod is in sliding fit with the air delivery channels, an air pressure valve is arranged at one end of the first rod, which is close to the vent pipe, and an air pressure valve is arranged between the vent pipe and the pot; one end of the first rod, which is away from the vent pipe, is movably connected with the pressing rods, a plurality of pressing rods are uniformly distributed along the circumferential direction of the pot, one side of the pressing rods, which is away from the vent pipe, is movably connected with the elastic ring, the elastic ring is arranged along the circumferential direction of the pot, the air bag is filled between the elastic ring and the pressing rods, the air bag is communicated with the first rod, and the top of the elastic ring is attached to the bottom of the cover plate; the number of the linear driving devices is at least two, the linear driving devices are arranged on the shell, the output ends of the linear driving devices are movably connected with the cover plate, and the linear driving devices are suitable for driving the cover plate to move along the height direction of the can. The air pressure effect of the vent pipe is converted into acting force along the radial direction of the pot, so that the elastic ring is tightly attached to or loosened from the inner wall of the pot through multiple radial acting forces, manual labor-saving operation is not needed, the abrasion to the detection head is reduced, and the service life of the detection device is prolonged.
Preferably, the sealing mechanism further comprises a first plate, one end of the first rod, which is away from the vent pipe, is fixedly connected with the first plate, the air bag is communicated with the first rod through the first plate, and the two first plates are movably sleeved; the air bag is fixedly connected with the first plate, the elastic ring is fixedly connected with the first plate, the first plate is hinged with the two pressing rods, the two pressing rods are hinged, and the elastic ring, the air bag and the pressing rods are respectively arranged above the first plate. The first rods drive the movable sleeved first plates to move so as to push the air bags to act on the elastic rings, so that tight connection among the first plates, the air bags and the elastic rings is ensured, and the sealing device is simple in structure, convenient to install and good in sealing effect.
Preferably, the sealing mechanism further comprises a gas transmission piece, the gas transmission piece is circular, a plurality of gas transmission channels are formed in the gas transmission piece, and the first rod is movably connected with the gas transmission piece through the gas transmission channels. The shape of the gas transmission piece matched with the pot is set to be round, and a gas transmission channel is formed in the gas transmission piece, so that the structural integrity and simplicity are ensured.
Preferably, the diameter of the cover plate is larger than that of the sealing mechanism, the number of the sealing mechanisms is two, the two sealing mechanisms are correspondingly arranged from top to bottom, an adjusting distance is reserved between the two sealing mechanisms, the cover plate is fixedly connected with the vent pipe, the sealing mechanism above is fixedly connected with the vent pipe, and the two sealing mechanisms cannot be disconnected. The double-layer sealing mechanism is arranged, when the inner wall of the pot to be detected is provided with the convex baffle ring, the convex baffle ring can be positioned between the upper sealing mechanism and the lower sealing mechanism, so that the detecting device can be suitable for detecting the pot with the convex baffle ring on the inner wall.
Preferably, the sealing device further comprises a second rod, the second rod is an elastic rod, the second rod is arranged between the two sealing mechanisms, and the second rod is downwards inclined from the gas transmission piece to the direction of the first plate. The arrangement of the second rod enables the sealing mechanism below to be transmitted to the sealing mechanism above to expand outwards and move downwards through the second rod when the sealing mechanism below moves downwards, so that the sealing effect is improved.
Preferably, the second rod comprises a first loop bar and a second loop bar, the first loop bar and the second loop bar are respectively hinged with the first bars of the two sealing mechanisms, and an elastic piece is arranged between the first loop bar and the second loop bar. Through the setting of member cup joint and elastic component, realize the connection between second pole and the two sealing mechanism, simple structure easily realizes.
Preferably, an air pressure valve is arranged between the two sealing mechanisms. Through the setting of pneumatic valve, realize ventilating to the sealing mechanism of top earlier, make the sealing mechanism of top seal with jar inner wall subsides tightly earlier, the sealing mechanism of top finishes the back of ventilating, when the pneumatic valve between two sealing mechanisms receives the atmospheric pressure and reaches a definite value, this pneumatic valve opens, ventilates to the sealing mechanism of below.
Preferably, the sealing mechanism further comprises a first shaft and a first rotating wheel, the first shaft is fixedly connected with the first plate, the first rotating wheel is connected with the first shaft in a unidirectional rotation mode, the two pressing rods are hinged through the first shaft and are respectively arranged on two sides of the first rotating wheel, the first rotating wheel is in butt joint with the elastic ring, and when the first rod moves from the direction of the elastic ring to the direction of the vent pipe, the pressing rods located on the same side of the first rotating wheel drive the first rotating wheel to rotate. The first shaft is driven to move by the first rod, the first shaft on the first plate is driven to move, the pressing rod is driven to rotate by the unidirectional wheel in a reset state of the first shaft, the elastic ring is driven to rotate by the unidirectional wheels propped against the inner side of the elastic ring, when the elastic ring is propped against the inner wall of the jar next time, the propped position of the first shaft and the elastic ring is changed, long-term abrasion to the same position of the elastic ring is avoided, and the service life of the elastic ring is prolonged.
Preferably, the device further comprises a pressure regulating piece, wherein the pressure regulating piece is fixedly connected with the shell, one end of the vent pipe is connected with the pressure regulating piece, the other end of the vent pipe is connected with the cover plate and the sealing mechanism, and the pressure regulating piece is an inflator pump; the elastic ring is made of rubber, the elastic ring is in a circular ring shape, and the cover plate is in a circular shape. The pressure regulating piece is used for inflating and exhausting the sealing mechanism and the inside of the pot through the vent pipe so as to complete subsequent detection work; the annular elastic ring is suitable for being attached to the inner wall of the pot, so that the tightness between the edge of the pot and the cover plate is ensured.
Preferably, the number of the first rods is eight, the number of the first plates is eight, the number of the pressing rods is sixteen, and at least two linear driving devices are uniformly distributed along the circumferential direction of the can. The cover plate is guaranteed to be stressed uniformly, and the sealing effect is guaranteed.
By adopting the technical scheme, the invention has the beneficial effects that: the cover plate and the elastic ring are adopted to seal the pot, the first rod is pushed to move under the action of air pressure of the vent pipe, the pressing rod is used for pressing the elastic ring, meanwhile, the air bag is inflated through the first rod, the air bag is used for filling and sealing between the elastic ring and the pressing rod and acts on the elastic ring, the elastic ring is tightly attached to the inner wall of the pot, and the sealing effect is guaranteed by setting multiple acting forces on the elastic ring; according to the invention, the air pressure effect of the vent pipe is converted into the acting force along the radial direction of the pot, so that the elastic ring is tightly attached or loosened with the inner wall of the pot through multiple radial acting forces, manual labor-saving operation is not needed, the labor is saved, the working efficiency is improved, the friction force and the friction time between the elastic ring and the pot are reduced when the detection head is installed and detached, the abrasion to the detection head is reduced, the service life of the detection device is prolonged, and the detection efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a can air tightness detection device according to an embodiment.
Fig. 2 is a first structural schematic diagram of a seal assembly provided in an embodiment.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 2.
Fig. 5 is a second structural schematic diagram of a seal assembly provided by an embodiment.
Fig. 6 is a schematic structural diagram of a gas delivery member according to an embodiment.
Reference numerals:
10. a housing; 20. a vent pipe; 210. a pressure regulating member; 30. a cover plate; 40. a sealing mechanism; 410. a first lever; 420. a pressing rod; 430. an air bag; 440. an elastic ring; 450. an air delivery channel; 460. a first plate; 470. a gas delivery member; 480. a second lever; 481. a first loop bar; 482. a second loop bar; 483. an elastic member; 490. a first wheel; 491. a first shaft; 50. a linear driving device; 60. and an air pressure valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Example 1
As shown in fig. 1 and 2, the can airtightness detection apparatus of the present invention, for detecting airtightness of a can, includes a housing 10, a pressure regulator 210, a vent pipe 20, a sealing assembly, a linear driving device 50, and a second rod 480.
As shown in fig. 1, the pressure regulating member 210 is fixedly connected to the case 10, the vent pipe 20 is disposed along the height direction of the can, one end of the vent pipe 20 is connected to the pressure regulating member 210, and the other end of the vent pipe 20 is connected to the sealing assembly. In this embodiment, the pressure regulator 210 is an inflator. The pressure regulator 210 is used to inflate and deflate the seal assembly and the interior of the canister through the vent tube 20 to perform subsequent testing operations.
As shown in fig. 1, the sealing assembly comprises a cover plate 30 and a sealing mechanism 40 which are sequentially arranged on the vent pipe 20 from top to bottom, wherein the cover plate 30 is fixedly connected with the vent pipe 20, and the diameter of the cover plate 30 is larger than that of the sealing mechanism 40. In this embodiment, the cover plate 30 is circular, so as to cover the can opening and seal the can opening.
As shown in fig. 2 and 5, the sealing mechanism 40 includes a gas delivery member 470, a first rod 410, a first plate 460, a pressing rod 420, a balloon 430, and an elastic ring 440.
As shown in fig. 4 and 6, the air delivery member 470 is circular, a plurality of air delivery passages 450 are formed in the air delivery member 470, the air delivery passages 450 are uniformly distributed along the circumferential direction of the canister, the air delivery passages 450 are radially arranged along the canister, and the air delivery passages 450 are communicated with the ventilation pipe 20. In the present embodiment, the number of the air passages 450 is set to eight, however, the number of the air passages 450 may be set to six, ten, etc., and the present invention is not limited thereto. The gas transmission member 470 is circular in shape in cooperation with the shape of the canister, and is provided with the gas transmission channel 450 inside, so that the structural integrity and simplicity are ensured.
As shown in fig. 2 and 4, the first rod 410 is movably connected with the air delivery member 470 through the air delivery channel 450, the first rod 410 is slidably matched with the air delivery channel 450, the air pressure valve 60 is arranged at one end of the first rod 410, which is close to the air vent pipe 20, and the air pressure valve 60 is arranged between the air vent pipe 20 and the tank. In the present embodiment, the number of first levers 410 is set to eight. When the air delivery member 470 ventilates the air delivery duct 450 through the air duct 20, the first rod 410 is pushed by air pressure to slide along the air delivery duct 450, and when the air pressure received by the air pressure valve 60 arranged at one end of the first rod 410 close to the air duct 20 reaches a certain value, the air pressure valve 60 is opened to ventilate the first rod 410; after the ventilation of the air-sending member 470 to the sealing mechanism 40 is completed, when the air pressure received by the air-pressure valve 60 provided between the ventilation tube 20 and the canister reaches a predetermined value, the air-pressure valve 60 is opened to ventilate the interior of the canister.
As shown in fig. 2, one end of the first rod 410, which is away from the ventilation pipe 20, is fixedly connected with the first plate 460, the two first plates 460 are movably sleeved, the first plate 460 is hinged with the two pressing rods 420, the two pressing rods 420 are hinged, the plurality of pressing rods 420 are sequentially hinged and uniformly distributed along the circumferential direction of the pot, and the pressing rods 420 are arranged above the first plate 460. In the present embodiment, the number of the first plates 460 is set to eight, and the number of the pressing bars 420 is sixteen. The elastic ring 440 is fixedly connected with the first plate 460, the elastic ring 440 is disposed above the first plate 460, and the elastic ring 440 extends to the outer peripheral side of the first plate 460. The elastic ring 440 is disposed along the circumference of the can, the elastic ring 440 is made of rubber, the elastic ring 440 is annular, and the top of the elastic ring 440 is attached to the bottom of the cover plate 30. The annular elastic ring 440 is adapted to be attached to the inner wall of the can, ensuring tightness between the can edge and the cap plate 30.
As shown in fig. 2 and 5, the air bag 430 is filled between the elastic ring 440 and the pressing rod 420, the air bag 430 is fixedly connected with the first plate 460, the air bag 430 is arranged above the first plate 460, and the air bag 430 is communicated with the gas transmission channel 450 sequentially through the first plate 460 and the first rod 410.
As shown in fig. 3, the sealing mechanism 40 further includes a first shaft 491 and a first rotating wheel 490, the first shaft 491 is fixedly connected with the first plate 460, the first rotating wheel 490 is rotatably connected with the first shaft 491, the two pressing rods 420 are hinged through the first shaft 491 and are respectively arranged at two sides of the first rotating wheel 490, and the first rotating wheel 490 is abutted with the elastic ring 440.
As shown in fig. 1, the number of the linear driving devices 50 is at least two, the linear driving devices 50 are arranged on the shell 10, the output ends of the linear driving devices 50 are movably connected with the cover plate 30, and the linear driving devices 50 are suitable for driving the cover plate 30 to move along the height direction of the can. In the present embodiment, the number of the linear driving devices 50 is set to two, and the linear driving devices 50 are any one of electric push rods, hydraulic cylinders, and air cylinders. At least two linear drives 50 are uniformly distributed along the circumference of the canister. The linear driving devices 50 are used for pressing the cover plate 30 against the can opening, and at least two linear driving devices 50 are uniformly distributed along the circumferential direction of the can and used for ensuring uniform stress of the cover plate 30 and sealing effect of the can opening.
Adopt apron 30 and elastic ring 440 to seal the jar, through the atmospheric pressure effect of gas transmission spare 470 and breather pipe 20, promote first pole 410 and remove, drive a plurality of first boards 460 that the activity cup jointed through first pole 410 and remove, thereby make to support the depression bar 420 and support to press to elastic ring 440, simultaneously, aerify gasbag 430 through first pole 410, make gasbag 430 fill between elastic ring 440 and the depression bar 420 and seal, and act on elastic ring 440, guarantee elastic ring 440 and jar inner wall subsides tightly, through setting up the multiple effort to elastic ring 440, guarantee sealed effect. This jar gas tightness detection device is with the atmospheric pressure effect of breather pipe 20, converts into along the radial effort of jar, makes elastic ring 440 paste closely or take off with the jar inner wall through multiple radial effort, need not the manual work and is hard the operation, uses manpower sparingly, improves work efficiency, has reduced simultaneously when installing and dismantling the detection head elastic ring 440 and the frictional force size and the friction time of jar, reduces the wearing and tearing to the detection head, prolongs detection device's life, improves detection efficiency.
As shown in fig. 2 and fig. 4, specifically, the number of the sealing mechanisms 40 is two, the two sealing mechanisms 40 are correspondingly arranged from top to bottom, an adjusting distance is provided between the two sealing mechanisms 40, the upper sealing mechanism 40 is fixedly connected with the ventilation pipe 20, the two sealing mechanisms 40 are not in separable connection, the lower sealing mechanism 40 can move relative to the upper sealing mechanism 40 along the height direction of the can, a plurality of ventilation holes are formed in the connection part of the ventilation pipe 20 and the upper sealing mechanism 40, the ventilation holes are communicated with the corresponding air conveying channels 450, when the lower sealing mechanism 40 moves downwards, the ventilation holes are opened, and when the lower sealing mechanism 40 moves upwards, the ventilation holes are closed. The double-layer sealing mechanism 40 is arranged, when the inner wall of the can to be detected is provided with the convex baffle ring, the convex baffle ring can be positioned between the upper sealing mechanism 40 and the lower sealing mechanism 40, so that the detection device can be suitable for detecting the can with the convex baffle ring on the inner wall.
As shown in fig. 2 and 3, the second rod 480 is provided between the two sealing mechanisms 40, the second rod 480 is an elastic rod, and the second rod 480 is provided by the gas transmission member 470 obliquely downward toward the first plate 460. The second rod 480 is disposed such that when the lower sealing mechanism 40 moves downward, the sealing effect is increased by the force of the second rod 480 that is transmitted to the upper sealing mechanism 40 to expand outward and move downward.
As shown in fig. 2 and 3, the second shaft 480 includes a first shaft 481 and a second shaft 482, the first shaft 481 and the second shaft 482 being respectively hinged with the first shafts 410 of the two sealing mechanisms 40, and an elastic member 483 being provided between the first shaft 481 and the second shaft 482. In this embodiment, the number of the second levers 480 is set to eight. The connection between the second rod 480 and the two sealing mechanisms 40 is realized through the rod sleeving and the elastic piece 483, and the structure is simple and easy to realize.
As shown in fig. 4, an air pressure valve 60 is provided between the two sealing mechanisms 40. By arranging the air pressure valve 60, the upper sealing mechanism 40 is firstly ventilated, the upper sealing mechanism 40 is tightly adhered and sealed with the inner wall of the pot, and when the air pressure received by the air pressure valve 60 between the two sealing mechanisms 40 reaches a certain value after the upper sealing mechanism 40 is ventilated, the air pressure valve 60 is opened to ventilate the lower sealing mechanism 40.
In use, the canister to be tested is placed in the test site, the seal assembly is mounted at the canister opening, the cover plate 30 covers the canister opening, and the seal mechanism 40 is located in the canister opening. Opening the linear driving device 50 to press the cover plate 30 against the tank opening; opening the pressure regulating part 210, ventilating the ventilating pipe 20 through the pressure regulating part 210, pushing the lower sealing mechanism 40 to move downwards through the ventilating pipe 20 under the action of air pressure, driving the upper sealing mechanism 40 to expand outwards and move downwards through the second rod 480, opening the vent hole, and enabling air to enter the upper sealing mechanism 40 so that the upper sealing mechanism 40 is clung to the inner wall of the pot; when the air pressure received by the air pressure valve 60 between the two sealing mechanisms 40 reaches a certain value after the ventilation of the upper sealing mechanism 40 is completed, the air pressure valve 60 is opened to ventilate the lower sealing mechanism 40; when the air pressure applied to the air pressure valve 60 between the air pipe 20 and the can reaches a predetermined value after the ventilation of the lower sealing mechanism 40 is completed, the air pressure valve 60 is opened to ventilate the inside of the can. After the ventilation is finished, a gas detection instrument, such as a gas leakage detector or a gas mass spectrometer, is used for detecting the gas outside the pot to judge the sealing performance.
Example two
As shown in fig. 3, in the present embodiment, compared with the first embodiment, the first rotating wheel 490 is connected with the first shaft 491 in a unidirectional rotation manner, and when the first lever 410 moves from the direction of the elastic ring 440 to the direction of the ventilation pipe 20, the pressing lever 420 located at the same side of the first rotating wheel 490 drives the first rotating wheel 490 to rotate.
The first rotating wheel 490 which rotates unidirectionally is arranged, the first plate 460 is pushed to stretch and retract through the first rod 410, the first shaft 491 on the first plate 460 is driven to move, under the reset state of the first shaft 491, the pressing rod 420 is driven to rotate unidirectionally by the first rotating wheel 490, the elastic ring 440 is driven to rotate through the unidirectional wheels which are propped against the inner peripheral side of the elastic ring 440, when the elastic ring 440 is propped against the inner wall of a pot next time, the position of the first shaft 491 and the elastic ring 440 is propped against the position of the first shaft 491 is changed, long-term abrasion on the same part of the elastic ring 440 is avoided, the service life of the elastic ring 440 is prolonged, and the detection efficiency is improved.
The rest of the present embodiment can refer to the first embodiment, and will not be described herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. A can air tightness detection device for detecting air tightness of a can, which is characterized by comprising a shell (10), a vent pipe (20), a sealing assembly and a linear driving device (50); the utility model provides a jar, including jar, seal assembly, sealing mechanism, vent pipe (20) are followed the direction of height of jar sets up, seal assembly includes apron (30) and sealing mechanism (40) that are set gradually from top to bottom on the vent pipe (20), sealing mechanism (40) include first pole (410), prop depression bar (420), gasbag (430) and elastic ring (440), sealing mechanism (40) have along a plurality of gas transmission ways (450) of circumference equipartition of jar, gas transmission way (450) are followed the radial setting of jar, gas transmission way (450) with vent pipe (20) are linked together, first pole (410) with gas transmission way (450) sliding fit, one end that first pole (410) is close to vent pipe (20) is equipped with pneumatic valve (60), vent pipe (20) with be equipped with pneumatic valve (60) between the jar; one end of the first rod (410) deviating from the vent pipe (20) is movably connected with the supporting rods (420), a plurality of supporting rods (420) are uniformly distributed along the circumference of the pot, one side of the supporting rods (420) deviating from the vent pipe (20) is movably connected with the elastic ring (440), the elastic ring (440) is arranged along the circumference of the pot, the air bag (430) is filled between the elastic ring (440) and the supporting rods (420), the air bag (430) is communicated with the first rod (410), and the top of the elastic ring (440) is attached to the bottom of the cover plate (30); the number of the linear driving devices (50) is at least two, the linear driving devices (50) are arranged on the shell (10), the output end of each linear driving device (50) is movably connected with the corresponding cover plate (30), and the linear driving devices (50) are suitable for driving the corresponding cover plates (30) to move along the height direction of the corresponding cans;
the sealing mechanism (40) further comprises a first plate (460), one end of the first rod (410) deviating from the ventilation pipe (20) is fixedly connected with the first plate (460), the air bag (430) is communicated with the first rod (410) through the first plate (460), and the two first plates (460) are movably sleeved; the air bag (430) is fixedly connected with the first plate (460), the elastic ring (440) is fixedly connected with the first plate (460), the first plate (460) is hinged with the two pressing rods (420), the two pressing rods (420) are hinged, and the elastic ring (440), the air bag (430) and the pressing rods (420) are respectively arranged above the first plate (460);
the sealing mechanism (40) further comprises a gas transmission piece (470), the gas transmission piece (470) is circular, a plurality of gas transmission channels (450) are formed in the gas transmission piece (470), and the first rod (410) is movably connected with the gas transmission piece (470) through the gas transmission channels (450);
when the air conveying piece (470) ventilates to the air conveying channel (450) through the ventilation pipe (20), the first rod (410) is pushed by air pressure to slide along the air conveying channel (450), and when the air pressure received by the air pressure valve (60) arranged at one end of the first rod (410) close to the ventilation pipe (20) reaches a certain value, the air pressure valve (60) is opened to ventilate the first rod (410);
after the ventilation of the air delivery member (470) to the sealing mechanism (40) is completed, when the air pressure received by the air pressure valve (60) arranged between the ventilation pipe (20) and the tank reaches a certain value, the air pressure valve (60) is opened to ventilate the tank.
2. The can air tightness detection device according to claim 1, wherein the diameter of the cover plate (30) is larger than the diameter of the sealing mechanisms (40), the number of the sealing mechanisms (40) is two, the two sealing mechanisms (40) are correspondingly arranged from top to bottom, an adjusting distance is reserved between the two sealing mechanisms (40), the cover plate (30) is fixedly connected with the vent pipe (20), the sealing mechanism (40) above is fixedly connected with the vent pipe (20), and the two sealing mechanisms (40) are not detachably connected.
3. The can tightness detecting device according to claim 2, further comprising a second rod (480), said second rod (480) being an elastic rod, said second rod (480) being provided between said two sealing mechanisms (40), said second rod (480) being disposed obliquely downward from said gas-conveying member (470) toward said first plate (460).
4. A can tightness detecting device according to claim 3, wherein said second lever (480) comprises a first lever (481) and a second lever (482), said first lever (481) and said second lever (482) being respectively hinged to said first levers (410) of two said sealing mechanisms (40), an elastic member (483) being provided between said first lever (481) and said second lever (482).
5. A can tightness detecting device according to claim 3, wherein a pneumatic valve (60) is provided between two of said sealing mechanisms (40);
through the setting of pneumatic valve (60), realize ventilating to sealing mechanism (40) of top earlier, make sealing mechanism (40) of top seal tightly seal with the jar inner wall earlier, after sealing mechanism (40) of top ventilates, when pneumatic valve (60) between two sealing mechanism (40) received atmospheric pressure reaches a definite value, this pneumatic valve (60) opens, ventilates sealing mechanism (40) of below.
6. The can tightness detection device according to claim 1, wherein the sealing mechanism (40) further comprises a first shaft (491) and a first rotating wheel (490), the first shaft (491) is fixedly connected with the first plate (460), the first rotating wheel (490) is connected with the first shaft (491) in a unidirectional rotation manner, two pressing rods (420) are hinged through the first shaft (491) and are respectively arranged at two sides of the first rotating wheel (490), the first rotating wheel (490) is abutted with the elastic ring (440), and when the first rod (410) moves from the direction of the elastic ring (440) to the direction of the vent pipe (20), the pressing rods (420) located at the same side of the first rotating wheel (490) drive the first rotating wheel (490) to rotate.
7. The can tightness detection device according to any of claims 1 to 6, further comprising a pressure regulating member (210), wherein the pressure regulating member (210) is fixedly connected to the housing (10), one end of the vent pipe (20) is connected to the pressure regulating member (210), the other end of the vent pipe (20) is connected to the cover plate (30) and the sealing mechanism (40), and the pressure regulating member (210) is an inflator; the elastic ring (440) is made of rubber, the elastic ring (440) is in a circular ring shape, and the cover plate (30) is in a circular shape.
8. The can tightness detecting device according to claim 1, wherein the number of said first bars (410) is eight, the number of said first plates (460) is eight, the number of said pressing bars (420) is sixteen, and at least two linear driving means (50) are uniformly distributed along the circumferential direction of the can.
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| CN202311133620.8A CN116878745B (en) | 2023-09-05 | 2023-09-05 | Jar gas tightness detection device |
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| CN202311133620.8A CN116878745B (en) | 2023-09-05 | 2023-09-05 | Jar gas tightness detection device |
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