Air tightness detection device for plastic preservation box

Abstract

The utility model discloses a plastic preservation box air tightness detection device comprising a detection cylinder, the bottom of the detection cylinder is fixedly provided with a pedestal, the upper side of the detection cylinder is provided with an upper cover, the detection cylinder is internally provided with a blocking member, and the blocking member comprises a fixed seat fixedly installed on the circumferential inner wall of the detection cylinder. A connecting shaft is fixedly installed on the surface of the fixing base, meanwhile, the size of the connecting shaft is matched with that of the connecting base, the connecting base is movably installed on the outer side of the connecting shaft, and a blocking piece is fixedly installed on the circumferential outer wall of the connecting base. According to the air tightness detection device for the plastic preservation box, the preservation box submerged in the water body inside the detection cylinder can be limited and blocked by the three groups of blocking sheets, a traditional hand pressing detection mode is replaced, stable pressure of the preservation box underwater can be ensured, long-time manual hand pressing is not needed, the labor intensity and hand pressure of operators are greatly reduced, and the detection efficiency is improved. And the detection convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of fresh-keeping box processing equipment, in particular to an air-tightness detection device for a plastic fresh-keeping box. Background Art

[0002] When testing the air tightness of the fresh-keeping box, the "water test method" is mainly used. The specific method is: prepare a sink filled with water; clean the fresh-keeping box and wipe off the moisture on the outside; close the lid of the fresh-keeping box tightly to ensure a good seal; slowly place the fresh-keeping box into the sink so that the box is completely immersed in water; observe whether there are bubbles around the fresh-keeping box; if there are bubbles, it means that there is a leak in the fresh-keeping box and the air tightness is not good; if there are no bubbles, it means that the air tightness is good.

[0003] When the above method is actually used, it is necessary to continuously use the hands to press the tightly closed fresh-keeping box into the water. The upward buoyancy generated by the fresh-keeping box counteracts the pressure of the tester's hands. During the operation, the pressure of the tester's hands is too great, and it is easy to get tired, causing the fresh-keeping box to shake easily in the water, making it difficult to maintain the same water pressure for a long time. Different hand pressure strengths will lead to differences in the test results. When continuously testing the air tightness of different fresh-keeping boxes, the burden on the hands is relatively large. Utility Model Content

[0004] The purpose of the utility model is to provide an airtightness detection device for a plastic fresh-keeping box to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, a plastic fresh-keeping box air tightness detection device is provided, comprising a detection cylinder, a base is fixedly installed at the bottom of the detection cylinder, and an upper cover is installed on the upper side of the detection cylinder, and a blocking member is installed inside the detection cylinder, the blocking member comprises a fixing seat fixedly installed on the circumferential inner wall of the detection cylinder, and a connecting shaft is fixedly installed on the surface of the fixing seat, and the connecting shaft is adapted to the size of the connecting seat, and the connecting seat is movably installed on the outside of the connecting shaft, and a blocking piece is fixedly installed on the circumferential outer wall of the connecting seat.

[0006] Preferably, an opening is provided inside the blocking piece, and the opening is circular, and the blocking piece is a fan-shaped structure made of plastic material.

[0007] Preferably, the blocking piece is a rotating structure with the connecting shaft as the center, and a force-bearing column is fixedly mounted on the upper surface of the blocking piece, and the cross-section of the force-bearing column is circular.

[0008] Preferably, three groups of blocking members are evenly installed on the circumferential inner wall of the detection cylinder, and the distance between two adjacent groups of blocking members is consistent. At the same time, the three groups of blocking members are centrally symmetrical structures about the central axis of the detection cylinder.

[0009] Preferably, the detection cylinder is made of acrylic material and is in a cylindrical shape, and six groups of reinforcing ribs are evenly and fixedly arranged on the outer side of the circumference of the detection cylinder, and the distance between two adjacent groups of reinforcing ribs is consistent.

[0010] Preferably, the interior of the detection cylinder is evenly and movably provided with three groups of blocking pieces, and the plastic fresh-keeping box inside the detection cylinder is blocked and limited by the three groups of blocking pieces.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model uses three sets of blocking pieces to limit the position of the fresh-keeping container submerged in the water inside the detection tube, replacing the traditional manual pressure detection method. It can ensure that the pressure on the fresh-keeping container is kept stable at the bottom of the water, eliminating the need for manual pressure for a long time, greatly reducing the operator's labor intensity and hand pressure, and improving the convenience of detection.

[0013] 2. The utility model uses three sets of blocking plates to submerge the fresh-keeping box in the detection tube. The water in the detection tube can provide a relatively uniform pressure. Compared with the manual pressure method, the pressure is more stable and can more accurately detect the air tightness of the fresh-keeping box. Different manual pressure strengths may lead to different test results, while the water pressure is relatively stable, which helps to obtain more accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Bottom view of

[0016] Figure 3 It is a top view of the detection tube;

[0017] Figure 4 It is a cross-sectional view of the detection tube.

[0018] Numbers in the figure: 1, base; 2, detection tube; 3, reinforcement rib; 4, upper cover; 5, blocking member; 51, fixing seat; 52, connecting shaft; 53, connecting seat; 54, blocking piece; 55, opening; 56, load-bearing column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4 The utility model provides an air tightness detection device for a plastic fresh-keeping box, comprising a detection tube 2, a base 1 being fixedly mounted on the bottom of the detection tube 2, and an upper cover 4 being mounted on the upper side of the detection tube 2, and a blocking member 5 being mounted inside the detection tube 2, the blocking member 5 comprising a fixing seat 51 fixedly mounted on the circumferential inner wall of the detection tube 2, and a connecting shaft 52 being fixedly mounted on the surface of the fixing seat 51, and the connecting shaft 52 being matched in size with a connecting seat 53, and the connecting seat 53 being movably mounted on the outer side of the connecting shaft 52, and a blocking piece 54 being fixedly mounted on the circumferential outer wall of the connecting seat 53.

[0021] Working principle: When the air tightness test of the fresh-keeping box is carried out by the "water test method", the fresh-keeping box is held in hand and submerged in the water inside the detection tube 2. At this time, the force-bearing column 56 is held in hand, and the blocking piece 54 rotates with the connecting shaft 52 as the center of the circle. The interior of the detection tube 2 is evenly movable and is provided with three groups of blocking pieces 54. The three groups of blocking pieces 54 can limit the fresh-keeping box submerged in the water inside the detection tube 2, replacing the traditional hand pressure detection method, which can ensure that the fresh-keeping box is kept at a stable pressure at the bottom of the water, without the need for manual long-term hand pressure, greatly reducing the labor intensity and hand pressure of the operator, and improving the convenience of detection; the fresh-keeping box is submerged in the detection tube 2 through the three groups of blocking pieces 54 , reducing the impact of human factors on the test results and improving the consistency and reliability of the test; the base 1 and the test tube 2 are evenly reinforced by six groups of reinforcing ribs 3 to increase the water pressure that the test tube 2 can withstand; when the device is idle, the upper cover 4 is covered on the top opening of the test tube 2 to seal the inside of the test tube 2 to prevent dust from falling; three groups of blocking sheets 54 submerge the fresh-keeping box in the test tube 2; the water in the test tube 2 can provide a more uniform pressure, which is more stable than the manual pressure method and can more accurately detect the air tightness of the fresh-keeping box; different manual pressure strengths may lead to differences in the test results, while the water pressure is relatively stable, which helps to obtain more accurate test results.

[0022] An opening 55 is formed inside the blocking piece 54 , and the opening 55 is circular. The blocking piece 54 is a fan-shaped structure made of plastic.

[0023] As a preferred embodiment, the blocking piece 54 is a rotating structure with the connecting shaft 52 as the center, and a force-bearing column 56 is fixedly mounted on the upper surface of the blocking piece 54 , and the cross-section of the force-bearing column 56 is circular.

[0024] Three groups of blocking members 5 are evenly mounted on the inner circumferential wall of the detection cylinder 2 , and the distance between two adjacent groups of blocking members 5 is consistent. Meanwhile, the three groups of blocking members 5 are centrally symmetrical structures about the central axis of the detection cylinder 2 .

[0025] As a preferred embodiment, the detection cylinder 2 is made of acrylic material and is in a cylindrical shape. Six groups of reinforcing ribs 3 are evenly and fixedly arranged on the outer circumference of the detection cylinder 2, and the distance between two adjacent groups of reinforcing ribs 3 is consistent.

[0026] The interior of the detection cylinder 2 is evenly and movably provided with three groups of blocking pieces 54 , and the plastic fresh-keeping box inside the detection cylinder 2 is blocked and limited by the three groups of blocking pieces 54 .

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the air tightness of a plastic fresh-keeping box, comprising a detection tube (2), characterized in that: The bottom of the detection cylinder (2) is fixedly mounted with a base (1), and the upper side of the detection cylinder (2) is mounted with an upper cover (4), and the interior of the detection cylinder (2) is mounted with a blocking member (5), the blocking member (5) comprising a fixing seat (51) fixedly mounted on the inner circumferential wall of the detection cylinder (2), and a connecting shaft (52) fixedly mounted on the surface of the fixing seat (51), and the connecting shaft (52) and the connecting seat (53) are matched in size, and the connecting seat (53) is movably mounted on the outer side of the connecting shaft (52), and a blocking piece (54) is fixedly mounted on the outer circumferential wall of the connecting seat (53).

2. The air tightness detection device for a plastic fresh-keeping box according to claim 1, characterized in that: An opening (55) is provided inside the blocking piece (54), and the opening (55) is circular. The blocking piece (54) is a fan-shaped structure made of plastic material.

3. The air tightness detection device for a plastic fresh-keeping box according to claim 2, characterized in that: The blocking piece (54) is a rotating structure with the connecting shaft (52) as the center of the circle, and a force-bearing column (56) is fixedly installed on the upper surface of the blocking piece (54), and the cross-section of the force-bearing column (56) is circular.

4. The air tightness detection device for a plastic fresh-keeping box according to claim 1, characterized in that: Three groups of blocking members (5) are evenly mounted on the circumferential inner wall of the detection cylinder (2), and the distance between two adjacent groups of blocking members (5) is consistent. At the same time, the three groups of blocking members (5) are centrally symmetrical structures about the central axis of the detection cylinder (2).

5. The air tightness detection device for a plastic fresh-keeping box according to claim 1, characterized in that: The detection cylinder (2) is made of acrylic material and is in a cylindrical shape. Six groups of reinforcing ribs (3) are evenly and fixedly arranged on the outer side of the circumference of the detection cylinder (2), and the distance between two adjacent groups of reinforcing ribs (3) is consistent.

6. The air tightness detection device for a plastic fresh-keeping box according to claim 1, characterized in that: The interior of the detection cylinder (2) is evenly and movably provided with three groups of blocking pieces (54), and the plastic fresh-keeping box inside the detection cylinder (2) is blocked and limited by the three groups of blocking pieces (54).

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