Packaging bag air leakage detection equipment for inflatable puffed food

Abstract

The utility model relates to air leakage detection equipment for packaging management of inflatable puffed food. Comprising a barrel body, a support, a sealing cover, a pressing plate and a grating plate, an opening is formed in the upper end of the barrel body, the barrel body is made of transparent materials, the sealing cover is arranged on the upper side of the barrel body, the support is of a structure capable of stretching and retracting in the vertical direction, the sealing cover is fixedly arranged at the upper end of the support, the pressing plate is arranged below the sealing cover and fixedly connected with the sealing cover, and the grating plate is arranged below the pressing plate and fixedly connected with the pressing plate. A detector stretches the support upwards, the support drives the sealing cover to move upwards, the sealing cover drives the pressing plate and the grating plate to move upwards, and after the grating plate moves upwards to the position above the liquid level in the barrel body, the grating plate is kept above the liquid level. At the moment, water attached to the packaging bag drips downwards from the grating plate, and after it is observed that no liquid drips on the grating plate, the packaging bag of the inflatable puffed food is taken out from the grating plate. And after the packaging bag is taken out from the grating plate, water dripping from the packaging bag to the ground can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing inspection equipment technical field, concretely relates to a kind of packing bag of aerated puffed food leak detection equipment. BACKGROUND

[0002] When packing puffed food, inert gas such as nitrogen is usually filled into the packing bag to make the packing bag inflate, and in the process of filling inert gas into the bag, oxygen and water vapor in the packing bag can be discharged, which can reduce the possibility of oil in the food being oxidized and rancid, and can reduce the possibility of puffed food becoming soft due to moisture and losing the original crisp taste. After the packing bag is inflated and sealed, the packing bag needs to be detected to determine whether the sealing of the packing bag is good.

[0003] Now the negative pressure sealing tester is usually used to detect whether the packing bag leaks, and the operation method is to pour liquid into the barrel, press the packing bag below the liquid, cover and seal the sealing cover on the barrel, and then use the negative pressure sealing tester to vacuum the inner cavity of the barrel. In the process of vacuuming the inner cavity of the barrel by the negative pressure sealing tester, the external pressure of the packing bag is continuously reduced to form a negative pressure environment, and at this time the external pressure of the packing bag is less than the internal pressure. When the external pressure decreases to a certain extent, if the packing bag has a small pore or a poor sealing place, the internal gas will escape due to the pressure difference, forming bubbles. After the detection is completed, the packing bag soaked in the liquid is taken out. In the process of taking out the packing bag, the liquid attached to the surface of the packing bag will be taken out together with the packing bag, and will fall along the outer surface of the packing bag under the action of gravity and drip to the ground along the taking-out track and wet the ground. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide a packing bag leak detection equipment for aerated puffed food to solve the problem that the water attached to the surface of the packing bag taken out from the water is not pre-cleaned.

[0005] The utility model realizes the following technical scheme:

[0006] A packing bag leak detection equipment for aerated puffed food, comprising a barrel, a bracket, a sealing cover, a pressing plate and a grating plate, the upper end of the barrel is open, the barrel is made of transparent material, the sealing cover is arranged on the upper side of the barrel, the bracket is a vertically telescopic structure, the sealing cover is fixedly arranged on the upper end of the bracket, the pressing plate is arranged below the sealing cover and fixedly connected with the sealing cover, and the grating plate is arranged below the pressing plate and fixedly connected with the pressing plate.

[0007] Further, the sealing cover is formed with a first through hole and a second through hole, both of which communicate the upper and lower sides of the sealing cover; further comprising a connecting pipe, a vacuum pump, a first valve, an air inlet pipe and a second valve, one end of the connecting pipe is fixedly connected to the upper end of the first through hole, the other end of the connecting pipe is fixedly connected to the air inlet of the vacuum pump, the first valve is arranged on the connecting pipe, one end of the air inlet pipe is connected to the upper end of the second through hole, and the second valve is arranged on the air inlet pipe.

[0008] Further, the bracket comprises a left support rod and a right support rod, both of which are fixedly connected to the barrel body, and the left and right support rods are arranged on the left and right sides of the barrel body, respectively; both the left and right support rods are vertically telescopic structures, the sealing cover is provided with a left connecting strip and a right connecting strip, one end of the left connecting strip is connected to the sealing cover, and the other end is fixedly connected to the upper end of the left support rod; one end of the right connecting strip is connected to the sealing cover, and the other end is fixedly connected to the upper end of the right support rod.

[0009] Further, the left support rod comprises a first rod body, a second rod body, a first bolt and a first air hole, the upper end of the first rod body is recessed downward to form a first hole, the outer periphery of the upper end of the first rod body is recessed inward to form a first screw hole, the first screw hole communicates with the first hole, the second rod body is slidingly fitted in the first hole, the first bolt is screwed into the first screw hole, the screw-in end of the first bolt is used to abut against the second rod body, and the first air hole is arranged at the lower end of the first hole and communicates with the first hole at one end and with the outer surface of the first rod body at the other end.

[0010] The right support rod comprises a third rod body, a fourth rod body, a second bolt and a second air hole, the upper end of the third rod body is recessed downward to form a second hole, the outer periphery of the upper end of the third rod body is recessed inward to form a second screw hole, the second screw hole communicates with the second hole, the fourth rod body is slidingly fitted in the second hole, the second bolt is screwed into the second screw hole, and the screw-in end of the second bolt is used to abut against the fourth rod body; the second air hole is arranged at the lower end of the second hole and communicates with the second hole at one end and with the outer surface of the third rod body at the other end.

[0011] The other end of the left connecting strip is fixedly connected to the upper end of the second rod body, and the other end of the right connecting strip is fixedly connected to the upper end of the fourth rod body.

[0012] Further, the one end of the connecting pipe is detachably fixedly connected to the upper end of the first through hole; the sealing cover is rotatably connected to the support, the rotation center line of the sealing cover is located at the center position of the sealing cover, the distance from the upper side of the pressing plate to the lower side of the grid plate is less than the distance from the upper side of the pressing plate to the lower side of the sealing cover; further comprising a cylinder, the lower end of the cylinder is fixedly connected to the upper side of the grid plate, the upper end of the cylinder is detachably fixedly connected to the pressing plate, a plurality of drainage holes are arranged on the cylinder wall of the cylinder, the plurality of drainage holes are uniformly arranged on the cylinder wall of the cylinder, and the cylinder is made of transparent material.

[0013] Further, the outer periphery of the sealing cover is inwardly recessed to form an annular sliding groove, a rotating ring is arranged in the annular sliding groove, the rotating ring is matched with the annular sliding groove, the one end of the left connecting strip is fixedly connected to the rotating ring, and the one end of the right connecting strip is fixedly connected to the rotating ring.

[0014] Further, the upper end of the cylinder is provided with a first internal thread, the pressing plate is circular, the outer periphery of the pressing plate is provided with a first external thread, the upper end of the cylinder is threadedly connected with the pressing plate, a plurality of water permeable holes are arranged on the pressing plate, and the water permeable holes penetrate the upper end surface and the lower end surface of the pressing plate.

[0015] Further, the lower side of the sealing cover is downwardly protruded to form a circular ring, the circular ring is matched with the upper end of the inner cavity of the barrel body, the outer periphery of the circular ring is provided with a second external thread, and the inner periphery of the upper end of the barrel body is provided with a second internal thread matched with the second external thread.

[0016] Further, the middle part of the upper side of the sealing cover is fixedly provided with a connecting column and a handle, the connecting column is fixedly arranged on the middle part of the upper end surface of the sealing cover, and the handle is fixedly arranged on the upper end of the connecting column.

[0017] Further, the first through hole is provided with a third internal thread, a circular pipe is arranged in the first through hole, the outer periphery of the circular pipe is provided with a third external thread, the circular pipe is threadedly connected in the first through hole, and the one end of the connecting pipe is fixedly connected to the upper end of the circular pipe.

[0018] The utility model discloses the beneficial effect lies in:

[0019] After the air-entraining expanded food packaging bag leak detection equipment detects the air tightness of the air-entraining expanded food packaging bag, the detection personnel stretches the support upwards, the support drives the sealing cover to move upwards, the sealing cover drives the pressing plate and the grid plate to move upwards, and after the grid plate moves upwards to above the liquid level in the barrel body, the grid plate is kept above the liquid level.

[0020] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in which the advantages of the present application are more fully explained. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the air-entraining expanded food packaging bag leak detection equipment of the present application;

[0022] Figure 2 It is a left view of the air-entraining expanded food packaging bag leak detection equipment of the present application;

[0023] Figure 3 It is Figure 2 A-A sectional view.

[0024] In the figure: 1, barrel body; 21, left support rod; 211, left connecting strip; 212, first rod body; 213, second rod body; 214, first bolt; 22, right support rod; 221, right connecting strip; 222, third rod body; 223, fourth rod body; 224, second bolt; 3, sealing cover; 31, rotating ring; 32, connecting column; 33, rocking handle; 4, pressing plate; 5, grid plate; 51, cylinder; 6, connecting pipe; 7, air inlet pipe; 8, first valve; 9, second valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the above description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "one side", "the other side" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the term "same" and other terms do not mean that the components must be absolutely the same, but there can be slight differences. The term "vertical" only means that the position relationship between the components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0030] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a packaging bag of aerated food leak detection equipment, including barrel 1, support, sealing cover 3, pressing plate 4 and grating plate 5, the upper end opening of barrel 1, barrel 1 is made of transparent material, sealing cover 3 is located in the upper side of barrel 1, the support is the structure that can be along vertical telescopic, sealing cover 3 is fixed on the upper end of support, pressing plate 4 is located below sealing cover 3 and is fixedly connected sealing cover 3, grating plate 5 is located below pressing plate 4 and is fixedly connected pressing plate 4.

[0031] Before the air-tightness of the packaging bag of the aerated food is detected by the packaging bag management air leakage detection equipment for aerated food, the detection personnel first stretches the support upwards, the support drives the sealing cover 3 to move upwards, the sealing cover 3 drives the pressing plate 4 and the grid plate 5 to move upwards, after the grid plate 5 moves upwards to above the barrel body 1, the packaging bag of the aerated food is placed on the grid plate 5, and liquid is injected into the inner cavity of the barrel body 1, the liquid can be water, so that the distance from the liquid surface of the liquid to the upper end of the barrel body 1 is less than the distance from the upper end of the pressing plate 4 to the lower side of the sealing cover 3.

[0032] When the air-tightness of the packaging bag of the aerated food is detected by the packaging bag management air leakage detection equipment for aerated food, the support is first compressed downwards, the support drives the sealing cover 3 to move downwards to the opening of the barrel body 1, and the sealing cover 3 is covered on the upper end of the barrel body 1 and seals the barrel body 1, at this time, the grid plate 5, the pressing plate 4 and the packaging bag between the pressing plate 4 and the grid plate 5 are completely below the liquid surface of the liquid in the barrel body 1, so that the packaging bag of the aerated food is pressed to be completely immersed in the liquid, and under the pressure of the liquid, the packaging bag of the aerated food is extruded. Through the transparent barrel body 1, the detection personnel observes the four sides of the packaging bag of the aerated food, if it is observed that the packaging bag of the aerated food has bubbles escaping, it means that the packaging bag of the aerated food leaks, and the air-tightness of the packaging bag is poor, if it is observed that the packaging bag of the aerated food has no bubbles escaping, it means that the packaging bag of the aerated food does not leak, and the air-tightness of the packaging bag is good.

[0033] After the detection is completed, the detection personnel stretches the support upwards, the support drives the sealing cover 3 to move upwards, the sealing cover 3 drives the pressing plate 4 and the grid plate 5 to move upwards, after the grid plate 5 moves upwards to above the liquid surface in the barrel body 1, the grid plate 5 is kept above the liquid surface. At this time, the water attached to the packaging bag will drip downwards from the grid plate 5, after a period of time, that is, after it is observed that the grid plate 5 has no liquid dripping, the packaging bag of the aerated food is taken out from the grid plate 5. When the packaging bag is taken out from the grid plate 5, the amount of water attached to the packaging bag has been greatly reduced, and after the packaging bag is taken out from the grid plate 5, the water dripping from the packaging bag to the ground can be greatly reduced.

[0034] In the embodiment, the sealing cover 3 is provided with a first through hole and a second through hole, both of which communicate the upper and lower sides of the sealing cover 3; the device further comprises a connecting pipe 6, a vacuum pump (not shown in the figure), a first valve 8, an air inlet pipe 7 and a second valve 9; one end of the connecting pipe 6 is fixedly connected to the upper end of the first through hole, and the other end of the connecting pipe 6 is fixedly connected to the air inlet of the vacuum pump; the vacuum pump can be a vacuum pump of model HPD01; the first valve 8 is arranged on the connecting pipe 6; one end of the air inlet pipe 7 is connected to the upper end of the second through hole; and the second valve 9 is arranged on the air inlet pipe 7.

[0035] After the grid plate 5, the pressing plate 4 and the packaging bag located between the pressing plate 4 and the grid plate 5 are completely located below the liquid level of the liquid in the barrel body 1, and the sealing cover 3 is covered on the upper end of the barrel body 1 and seals the barrel body 1, the first valve 8 is opened, the second valve 9 is closed, the vacuum pump draws the gas in the barrel body 1 through the connecting pipe 6, and the part of the inner cavity of the barrel body 1 located on the upper side of the liquid forms a negative pressure; if the air tightness of the packaging bag of the aerated food is poor, the gas in the packaging bag will be more quickly discharged under the joint action of the liquid pressure and the negative pressure in the part of the inner cavity of the barrel body 1 located on the upper side of the liquid, and the gas bubbles formed in the liquid will be more obvious, so that the detection personnel can more easily determine whether the packaging bag leaks and whether the air tightness of the packaging bag is good.

[0036] After the detection is completed, the first valve 8 is closed, the second valve 9 is opened, the gas in the outside world enters the inner cavity of the barrel body 1 through the air inlet pipe 7, so that the pressure of the part of the inner cavity of the barrel body 1 located on the upper side of the liquid is the same as the outside pressure, and then the sealing cover 3 can be separated from the barrel body 1 upward.

[0037] In the embodiment, the support comprises a left support rod 21 and a right support rod 22, the left support rod 21 and the right support rod 22 are separately arranged on the left and right sides of the barrel body 1, the left support rod 21 and the right support rod 22 are both fixedly connected to the barrel body 1, the left support rod 21 and the right support rod 22 are both vertically telescopic structures, the sealing cover 3 is provided with a left connecting strip 211 and a right connecting strip 221, one end of the left connecting strip 211 is connected to the sealing cover 3, and the other end of the left connecting strip 211 is fixedly connected to the upper end of the left support rod 21; one end of the right connecting strip 221 is connected to the sealing cover 3, and the other end of the right connecting strip 221 is fixedly connected to the upper end of the right support rod 22.

[0038] Since the left support rod 21 and the right support rod 22 are both vertically telescopic structures, the support is also a vertically telescopic structure. When the left support rod 21 and the right support rod 22 are telescoped, the left support rod 21 and the right support rod 22 can respectively drive the sealing cover 3 to move up and down through the left connecting strip 211 and the right connecting strip 221.

[0039] In the embodiment, the left support rod 21 comprises a first rod body 212, a second rod body 213, a first bolt 214 and a first air hole. The upper end of the first rod body 212 is concave downward to form a first hole channel. The outer circumferential surface of the upper end of the first rod body 212 is concave inward to form a first screw hole. The first screw hole is communicated with the first hole channel. The second rod body 213 is slidingly fitted in the first hole channel. The first bolt 214 is screwed in the first screw hole. The screwing-in end of the first bolt 214 is used to abut against the second rod body 213. The first air hole is arranged at the lower end of the first hole channel. One end of the first air hole is communicated with the first hole channel, and the other end is communicated with the outer surface of the first rod body 212.

[0040] The right support rod 22 comprises a third rod body 222, a fourth rod body 223, a second bolt 224 and a second air hole. The upper end of the third rod body 222 is concave downward to form a second hole channel. The outer circumferential surface of the upper end of the third rod body 222 is concave inward to form a second screw hole. The second screw hole is communicated with the second hole channel. The fourth rod body 223 is slidingly fitted in the second hole channel. The second bolt 224 is screwed in the second screw hole. The screwing-in end of the second bolt 224 is used to abut against the fourth rod body 223. The second air hole is arranged at the lower end of the second hole channel. One end of the second air hole is communicated with the second hole channel, and the other end is communicated with the outer surface of the third rod body 222.

[0041] The other end of the left connecting strip 211 is fixedly connected with the upper end of the second rod body 213. The other end of the right connecting strip 221 is fixedly connected with the upper end of the fourth rod body 223.

[0042] The first bolt 214 is rotated in the first screw hole to make the screwing-in end of the first bolt 214 disengage from the second rod body 213. Then, the second rod body 213 can be moved upward or downward in the first hole channel. At this time, the left support rod 21 can be elongated or shortened. The first bolt 214 is rotated in the first screw hole to make the screwing-in end of the first bolt 214 abut against the second rod body 213. The length of the left support rod 21 can be fixed. With this structure, the left support rod 21 is a structure that can be vertically extended and retracted.

[0043] The second bolt 224 is rotated in the second threaded hole to disengage the threaded end of the second bolt 224 from the fourth rod 223, and then the fourth rod 223 can be moved upward or downward in the second hole, and the right support rod 22 can be elongated or shortened. The length of the right support rod 22 can be fixed by rotating the second bolt 224 in the second threaded hole to make the threaded end of the second bolt 224 abut against the fourth rod 223. In this way, the right support rod 22 is a vertically telescopic structure.

[0044] When the second rod 213 and the fourth rod 223 are moved upward or downward, the left connecting strip 211 and the right connecting strip 221 are moved upward or downward, and the sealing cover 3 is moved upward or downward.

[0045] In this embodiment, one end of the connecting pipe 6 is detachably fixed to the upper end of the first through hole, the sealing cover 3 is rotatably connected to the support, the center line of the rotation of the sealing cover 3 is located at the center of the sealing cover 3, and the distance from the upper side of the pressing plate 4 to the lower side of the grid plate 5 is less than the distance from the upper side of the pressing plate 4 to the lower side of the sealing cover 3.

[0046] The lower end of the cylinder 51 is fixedly connected to the upper side of the grid plate 5, and the upper end of the cylinder 51 is detachably fixed to the pressing plate 4. A plurality of drainage holes are arranged on the cylinder wall of the cylinder 51, and the plurality of drainage holes are uniformly arranged on the cylinder wall of the cylinder 51. The cylinder 51 is made of transparent material.

[0047] When the liquid is injected into the inner cavity of the barrel 1, the distance from the liquid surface of the liquid to the upper end of the barrel 1 is less than the distance from the upper side of the pressing plate 4 to the lower side of the sealing cover 3, and the distance from the liquid surface of the liquid to the upper end of the barrel 1 is greater than the distance from the upper side of the pressing plate 4 to the lower side of the grid plate 5.

[0048] After the detection is completed, the second rod 213 and the fourth rod 223 are moved upward by a distance, and the second rod 213 and the fourth rod 223 drive the sealing cover 3 to move upward by a distance, so that the grid plate 5 and the pressing plate 4 are located between the upper end of the barrel 1 and the liquid surface. Then the first bolt 214 is rotated in the first threaded hole, and the second bolt 224 is rotated in the second threaded hole, so that the threaded end of the first bolt 214 abuts against the second rod 213, and the threaded end of the second bolt 224 abuts against the fourth rod 223. The height of the support is fixed, the height of the sealing cover 3 is fixed, and the grid plate 5 and the pressing plate 4 are kept between the upper end of the barrel 1 and the liquid surface.

[0049] Then the connecting pipe 6 is detached from the upper end of the first through hole, and then the sealing cover 3 is rotated, the sealing cover 3 drives the pressing plate 4 to rotate, the pressing plate 4 drives the grid plate 5 to rotate, so that the liquid on the outer surface of the packaging bag of the aerated food can be thrown out through the drainage hole under the action of centrifugal force, and the thrown-out water can be blocked by the barrel body 1, and the thrown-out water is not easy to be thrown out of the barrel body 1. With this structure, the liquid attached to the surface of the packaging bag of the aerated food can be quickly cleaned.

[0050] Since the lower end of the cylinder 51 is fixedly connected with the grid plate 5, and the upper end is detachably fixedly connected with the pressing plate 4, when the upper end of the cylinder 51 is fixedly connected with the pressing plate 4, the grid plate 5 can be fixedly connected with the pressing plate 4.

[0051] When it is needed to place the packaging bag on the grid plate 5, the cylinder 51 is first detached from the pressing plate 4, and then the packaging bag of the aerated food can be placed on the grid plate 5 from the upper end of the cylinder 51. After the packaging bag is placed on the grid plate 5, the cylinder 51 is fixedly connected with the pressing plate 4 again.

[0052] When it is needed to take out the packaging bag from the grid plate 5, the cylinder 51 is first detached from the pressing plate 4, and then the packaging bag of the aerated food on the grid plate 5 can be taken out from the upper end of the cylinder 51.

[0053] In the embodiment, the outer periphery of the sealing cover 3 is inwardly recessed to form an annular sliding groove, a rotating ring 31 is arranged in the annular sliding groove, the rotating ring 31 is matched with the annular sliding groove, one end of the left connecting strip 211 is fixedly connected with the rotating ring 31, and one end of the right connecting strip 221 is fixedly connected with the rotating ring 31.

[0054] The rotating ring 31 can rotate relative to the annular sliding groove, and the axis line of the rotating ring 31 coincides with the center line of the barrel body 1. With this structure, the sealing cover 3 can be rotatably connected with the support, and the rotation center line of the sealing cover 3 can be located at the center position of the sealing cover 3.

[0055] In the embodiment, the upper end of the cylinder 51 is provided with a first internal thread, the pressing plate 4 is circular, the outer periphery of the pressing plate 4 is formed with a first external thread, the upper end of the cylinder 51 is threadedly connected with the pressing plate 4, a plurality of water permeable holes are arranged on the pressing plate 4, and the water permeable holes pass through the upper end surface and the lower end surface of the pressing plate 4. With this structure, the cylinder 51 can be detachably fixedly connected with the pressing plate 4 in a threaded connection manner.

[0056] When the packaging bag submerged in the liquid has gas leakage, the gas bubbles formed by the leaked gas in the liquid can overflow upward through the water permeable holes.

[0057] In the embodiment, the lower side of the sealing cover 3 is formed with a circular ring protruding downward, the circular ring is matched with the upper end of the inner cavity of the barrel body 1, the outer circumferential surface of the circular ring is provided with a second external thread, and the inner circumferential surface of the upper end of the barrel body 1 is provided with a second internal thread matched with the second external thread.

[0058] The circular ring is screwed to the upper end of the barrel body 1, and the lower side of the sealing cover 3 is abutted and tightly abutted on the upper end surface of the barrel body 1, at this time, the sealing cover 3 can be covered on the upper end of the barrel body 1 and seal the barrel body 1. During the process of screwing the circular ring to the upper end of the barrel body, the screw-in end of the first bolt 214 is in a state of being separated from the second rod body 213, and the screw-in end of the second bolt 224 is in a state of being separated from the fourth rod body 223.

[0059] The circular ring is unscrewed from the upper end of the barrel body 1, and then the sealing cover 3 can be moved upward by the bracket. During the process of unscrewing the circular ring from the upper end of the barrel body 1, the screw-in end of the first bolt 214 is in a state of being separated from the second rod body 213, and the screw-in end of the second bolt 224 is in a state of being separated from the fourth rod body 223.

[0060] In the embodiment, the middle part of the upper side of the sealing cover 3 is fixedly provided with a connecting column 32 and a swing handle 33, the connecting column 32 is fixedly arranged on the middle part of the upper end surface of the sealing cover 3, and the swing handle 33 is fixedly arranged on the upper end of the connecting column 32.

[0061] The sealing cover 3 can be rotated by rotating the swing handle 33 by the detection personnel, and the structure is more convenient for rotating the sealing cover 3.

[0062] In the embodiment, the first through hole is provided with a third internal thread, a circular tube is arranged in the first through hole, the outer circumferential surface of the circular tube is provided with a third external thread, the circular tube is threadedly connected in the first through hole, and the one end of the connecting pipe 6 is fixedly connected with the upper end of the circular tube.

[0063] The circular tube is threadedly connected with the first through hole, and the one end of the connecting pipe 6 is fixedly connected with the upper end of the circular tube, so that the one end of the connecting pipe 6 is detachably fixedly connected with the upper end of the first through hole.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A device for detecting air leakage in packaging bags of puffed food products, characterized in that: The application relates to a packaging bag for aerated puffed food, which comprises a barrel body (1), a support, a sealing cover (3), a pressing plate (4) and a grid plate (5), the upper end of the barrel body (1) is open, the barrel body (1) is made of transparent material, the sealing cover (3) is arranged on the upper side of the barrel body (1), the support is vertically telescopic, the sealing cover (3) is fixedly arranged on the upper end of the support, the pressing plate (4) is arranged below the sealing cover (3) and is fixedly connected with the sealing cover (3), and the grid plate (5) is arranged below the pressing plate (4) and is fixedly connected with the pressing plate (4).

2. The popped food product package leak detection apparatus of claim 1, wherein: First and second through holes are formed in the sealing cover (3) and communicate the upper and lower sides of the sealing cover (3); the packaging bag further comprises a connecting pipe (6), a vacuum pump, a first valve (8), an air inlet pipe (7) and a second valve (9), one end of the connecting pipe (6) is fixedly connected with the upper end of the first through hole, the other end of the connecting pipe (6) is fixedly connected with the air inlet of the vacuum pump, the first valve (8) is arranged on the connecting pipe (6), one end of the air inlet pipe (7) is connected with the upper end of the second through hole, and the second valve (9) is arranged on the air inlet pipe (7).

3. The popped food product package leak detection apparatus of claim 2, wherein: The support comprises left and right support rods (21) and (22), the left and right support rods (21) and (22) are fixedly connected with the barrel body (1), the left and right support rods (21) and (22) are arranged on the left and right sides of the barrel body (1), the left and right support rods (21) and (22) are vertically telescopic, left and right connecting strips (211) and (221) are arranged on the sealing cover (3), one end of the left connecting strip (211) is connected with the sealing cover (3), the other end is fixedly connected with the upper end of the left support rod (21), one end of the right connecting strip (221) is connected with the sealing cover (3), and the other end is fixedly connected with the upper end of the right support rod (22).

4. The packaging bag for aerated puffed food according to claim 3, characterized in that: The left support rod (21) comprises a first rod body (212), a second rod body (213), a first bolt (214) and a first air hole, the upper end of the first rod body (212) is concave downward to form a first hole channel, the outer periphery of the upper end of the first rod body (212) is concave inward to form a first screw hole, the first screw hole communicates with the first hole channel, the second rod body (213) is slidingly fitted in the first hole channel, the first bolt (214) is screwed in the first screw hole, the screwing-in end of the first bolt (214) is used for abutting against the second rod body (213), and the first air hole is arranged at the lower end of the first hole channel, one end of the first air hole communicates with the first hole channel, and the other end communicates with the outer surface of the first rod body (212). The right supporting rod (22) comprises a third rod body (222), a fourth rod body (223), a second bolt (224) and a second air hole, the upper end of the third rod body (222) is concave downward to form a second channel, the outer periphery of the upper end of the third rod body (222) is concave inward to form a second screw hole, the second screw hole is communicated with the second channel, the fourth rod body (223) is slidingly fitted in the second channel, the second bolt (224) is screwed in the second screw hole, and the screw-in end of the second bolt (224) is used for abutting against the fourth rod body (223); the second air hole is arranged at the lower end of the second channel, one end of the second air hole is communicated with the second channel, and the other end of the second air hole is communicated with the outer surface of the third rod body (222). The other end of the left connecting strip (211) is fixedly connected with the upper end of the second rod body (213), and the other end of the right connecting strip (221) is fixedly connected with the upper end of the fourth rod body (223).

5. The popped food product package leak detection apparatus of claim 3, wherein: The one end of the connecting pipe (6) is detachably fixedly connected with the upper end of the first through hole; the sealing cover (3) is rotatably connected with the support, the rotation center line of the sealing cover (3) is located at the central position of the sealing cover (3), the distance from the upper side of the pressing plate (4) to the lower side of the grid plate (5) is smaller than the distance from the upper side of the pressing plate (4) to the lower side of the sealing cover (3); and the device further comprises a cylinder (51), the lower end of the cylinder (51) is fixedly connected with the upper side of the grid plate (5), the upper end of the cylinder (51) is detachably fixedly connected with the pressing plate (4), a plurality of drainage holes are arranged on the cylinder wall of the cylinder (51), the plurality of drainage holes are uniformly arranged on the cylinder wall of the cylinder (51), and the cylinder (51) is made of transparent material.

6. The popped snack food bag leak detection apparatus of claim 5 wherein: The outer periphery of the sealing cover (3) is concave inward to form an annular sliding groove, a rotating ring (31) is arranged in the annular sliding groove, the rotating ring (31) is matched with the annular sliding groove, the one end of the left connecting strip (211) is fixedly connected with the rotating ring (31), and the one end of the right connecting strip (221) is fixedly connected with the rotating ring (31).

7. The popped snack food bag leak detection apparatus of claim 5 wherein: The upper end of the cylinder (51) is provided with a first internal thread, the pressing plate (4) is circular, the outer periphery of the pressing plate (4) is provided with a first external thread, the upper end of the cylinder (51) is threadedly connected with the pressing plate (4), a plurality of water permeable holes are arranged on the pressing plate (4), and the water permeable holes penetrate the upper end surface and the lower end surface of the pressing plate (4).

8. The popped snack food bag leak detection apparatus of claim 5 wherein: The lower side of the sealing cover (3) is convex downward to form a circular ring, the circular ring is matched with the upper end of the inner cavity of the barrel body (1), the outer periphery of the circular ring is provided with a second external thread, and the inner periphery of the upper end of the barrel body (1) is provided with a second internal thread matched with the second external thread.

9. The popped snack food bag leak detection apparatus of claim 5 wherein: The middle part of the upper side of the sealing cover (3) is fixedly provided with a connecting column (32) and a rocking handle (33), the connecting column (32) is fixedly arranged on the middle part of the upper end surface of the sealing cover (3), and the rocking handle (33) is fixedly arranged on the upper end of the connecting column (32).

10. The popped snack food bag leak detection apparatus of claim 5 wherein: The first through hole is provided with a third internal thread, the first through hole is provided with a circular tube, an outer circumferential surface of the circular tube is provided with a third external thread, the circular tube is threadedly connected in the first through hole, and the one end of the connecting pipe (6) is in opposite connection with an upper end of the circular tube.

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