Vacuum sealing performance detector

Abstract

The utility model discloses a vacuum sealing performance detector. A vacuum sealing performance detector comprises a vacuum detector body, the top of the vacuum detector body is fixedly provided with a test tank, the top of the test tank is covered with a cover plate, the side part of the test tank is provided with a sealing mechanism, and the test tank is internally provided with a leakage-proof mechanism; the sealing mechanism comprises two connecting plates which are symmetrically distributed, a pressing plate is arranged above the cover plate, the pressing plate is in contact with the top of the cover plate, and a limiting opening is formed in the top of the pressing plate. The pressing plate can move downwards above the connecting plate, at the moment, the pressing plate can apply force to the top of the cover plate, the cover plate can tightly press the top of the test tank, the sealing performance of the test tank can be improved in cooperation with the leakage-proof mechanism, and therefore it can be guaranteed that the sealing performance is good, and the accuracy of a test result is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing detector technical field, specifically a vacuum sealing detector. BACKGROUND

[0002] The intelligent sealing tester is a kind of testing mode by vacuumizing, can automatically constant pressure air pressure relief back blow, and test process only needs three steps, for the negative pressure sealing leakage test of glass bottle for medicine, westlin bottle, plastic solid bottle, soaking package, aluminum plastic soft bag, syringe, pipette, vacuum packaging bag, head, milk powder bag, aluminum foil bag, eye drop bottle, medical instrument package, liquid bag, jelly cup, cover, cosmetic bottle bag, daily chemical etc.

[0003] In the prior art, the vacuum sealing detector generally includes a base, a vacuum tank is fixedly installed on the top of the base, a cover plate is threadedly connected to the top of the vacuum tank, a pressing plate is fixedly connected to the bottom of the cover plate, water is generally added into the vacuum tank, then the sample is placed in the water, the cover is closed and the pressing plate is used to press the sample into the water, the air in the vacuum tank is pumped out by a pump, and the air bubbles in the water and the deformation of the sample are observed to perform sealing test operation.

[0004] However, the cover plate and the vacuum tank are usually tightly combined together by thread connection during use, and with the increase of use time and the influence of operation environment factors (such as temperature change, chemical corrosion, etc.), firstly, long-term frequent opening and closing can cause the thread part on the cover plate to be gradually worn, and similarly, the corresponding thread on the vacuum tank can also be damaged to different degrees, so that the gap between the two increases, and at this time, the sealing effect is greatly reduced, the sealing performance is poor, and the accuracy of test result is affected.

[0005] How to solve the above technical problems has become a problem to be solved. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides a vacuum sealing detector to solve the above problems.

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a vacuum sealing detector, comprising a vacuum detector body, a test tank is fixedly installed on the top of the vacuum detector body, a cover plate is connected to the top of the test tank, a sealing mechanism is arranged on the side of the test tank, and a leakage prevention mechanism is arranged in the test tank.

[0008] The sealing mechanism comprises two symmetrically distributed connecting plates, the upper portion of the cover plate is provided with a pressing plate, the top of the pressing plate is in contact with the top of the cover plate, the top of the pressing plate is provided with a limiting opening, and the top of the connecting plate is fixedly connected with a limiting rod which is in sliding fit with the limiting opening.

[0009] Preferably, the bottom of the connecting plate is rotatably connected with a threaded rod through a bearing, the threaded rod is connected with the pressing plate through threads, and the bottom of the threaded rod is fixedly installed with a rotating block.

[0010] Preferably, one side of the bottom of the connecting plate is hingedly connected with a positioning rod, the bottom edge of the rotating block is provided with a plurality of evenly distributed positioning openings, and the positioning rod is in sliding fit with the inner wall of the positioning opening.

[0011] Preferably, the bottom of the connecting plate is fixedly connected with a positioning spring, and the positioning spring is fixedly connected with the positioning rod.

[0012] Preferably, the leak-proof mechanism comprises a sealing ring fixedly connected with the bottom of the cover plate, the side of the test tank is provided with a cavity, the inner wall of the test tank is fixedly connected with a leak-proof pad surrounding the sealing ring, the leak-proof pad is made of rubber material, and the sealing ring is in abutment with the leak-proof pad.

[0013] Preferably, one side of the leak-proof pad is in a circular arc structure, and the cavity is filled with lubricating oil.

[0014] Preferably, the top of the test tank is fixedly connected with a sealing pad surrounding the sealing ring, and the sealing pad is made of rubber material.

[0015] Preferably, the inner wall section of the cavity is in a U-shaped structure, one side of the cavity away from the sealing ring is a pressure cavity, and one side of the cavity close to the sealing ring is an oil return cavity, the top inner wall of the oil return cavity is provided with an oil return opening, the top of the pressure cavity is provided with a pressure opening, the inner wall of the pressure opening is slidably connected with a pressure rod, the bottom of the pressure rod is fixedly installed with a pressure ring surrounding the sealing ring, and the pressure ring is in contact with the inner wall of the pressure cavity and forms a sliding fit.

[0016] Preferably, the bottom of the pressure ring is fixedly connected with a reset spring, and the reset spring is fixedly connected with the bottom inner wall of the pressure cavity.

[0017] Beneficial effects

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. This utility model allows the pressure plate to move downward above the connecting plate by sliding relative to the inner wall of the limiting rod and the limiting port. At this time, the pressure plate can apply force to the top of the cover plate and make the cover plate press the top of the test tank tightly. With the anti-leakage mechanism, the sealing performance of the test tank can be improved. Therefore, good sealing performance can be guaranteed and the accuracy of the test results can be avoided.

[0020] 2. The present invention has a pressure rod that can slide in the inner wall of the pressure port. At this time, the lubricating oil in the pressure chamber can be pressed to the sealing gasket through the oil return chamber, which can automatically lubricate and maintain it, and ensure the sealing of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the pressure plate structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the reset spring structure of this utility model;

[0024] Figure 4 yes Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 yes Figure 3 A magnified structural diagram at point B in the middle.

[0026] In the diagram: 1. Vacuum testing machine body; 2. Test tank; 3. Cover plate; 4. Connecting plate; 5. Pressure plate; 6. Limit port; 7. Limit rod; 8. Threaded rod; 9. Rotating block; 10. Positioning rod; 11. Positioning port; 12. Positioning spring; 13. Sealing ring; 14. Cavity; 15. Sealing gasket; 16. Pressure chamber; 17. Oil return chamber; 18. Pressure port; 19. Oil return port; 20. Pressure rod; 21. Pressure ring; 22. Return spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5As shown, a vacuum sealing tester includes a vacuum tester body 1, a test tank 2 fixedly installed on the top of the vacuum tester body 1, a cover plate 3 covering the top of the test tank 2, a sealing mechanism on the side of the test tank 2, and a leak-proof mechanism inside the test tank 2.

[0029] The sealing mechanism includes two symmetrically distributed connecting plates 4. A pressure plate 5 is provided above the cover plate 3. The pressure plate 5 is in contact with the top of the cover plate 3. A limit opening 6 is provided on the top of the pressure plate 5. A limit rod 7 that forms a sliding fit with the limit opening 6 is fixedly connected to the top of the connecting plate 4.

[0030] Specifically, the sample can be pressed into the water and immersed by the pressure rod at the bottom of the cover plate 3. Rotating the rotating block 9 can cause the threaded rod 8 to rotate. The rotation of the threaded rod 8, in conjunction with the limiting port 6 and the limiting rod 7, can cause the pressure plate 5 to move down. At this time, the cover plate 3 can be pressed down. After the sealing ring 13 contacts the anti-leakage gasket, the two can be squeezed together to avoid gas leakage. Therefore, good sealing performance can be guaranteed, and the accuracy of the test results can be avoided.

[0031] As a further improvement of this utility model, the bottom of the connecting plate 4 is rotatably connected to a threaded rod 8 via a bearing, the threaded rod 8 is threadedly connected to the pressure plate 5, and a rotating block 9 is fixedly installed at the bottom of the threaded rod 8.

[0032] Specifically, the threaded rod 8 can apply force to the pressure plate 5 when it rotates, and the pressure plate 5 can apply force to the cover plate 3, which can make the cover plate 3 seal stably at the top of the test tank 2.

[0033] As a further improvement of this utility model, a positioning rod 10 is hinged to one side of the bottom of the connecting plate 4, and a number of evenly distributed positioning holes 11 are opened on the bottom edge of the rotating block 9. The positioning rod 10 and the inner wall of the positioning hole 11 form a sliding fit.

[0034] Specifically, the positioning rod 10 can slide within the inner wall of the positioning port 11, which can limit the rotation block 9 and prevent it from reversing.

[0035] As a further improvement of this utility model, a positioning spring 12 is fixedly connected to the bottom of the connecting plate 4, and the positioning spring 12 is fixedly connected to the positioning rod 10.

[0036] Specifically, the positioning spring 12 can apply pressure to the positioning rod 10, which can make the positioning rod 10 stable in the positioning port 11.

[0037] As a further improvement of this utility model, the leak-proof mechanism includes a sealing ring 13 fixedly connected to the bottom of the cover plate 3, a cavity 14 opened on the side of the test tank 2, and a leak-proof pad that surrounds the sealing ring 13 fixedly connected to the inner wall of the test tank 2. The leak-proof pad is made of rubber, and the sealing ring 13 abuts against the leak-proof pad.

[0038] Specifically, the sealing ring 13 can be squeezed against the leak-proof pad to prevent gas leakage from the test tank 2.

[0039] As a further improvement of this utility model, one side of the leak-proof pad has an arc-shaped structure, and the cavity 14 is filled with lubricating oil.

[0040] Specifically, the leak-proof pad with its arc-shaped structure allows the sealing ring 13 to slide on the surface of the leak-proof pad, which can reduce the damage caused by the sealing ring 13.

[0041] As a further improvement of this utility model, a sealing gasket 15, which surrounds the sealing ring 13, is fixedly connected to the top of the test tank 2. The sealing gasket 15 is made of rubber.

[0042] Specifically, the sealing gasket 15 can reduce the gap between the test tank 2 and the cover plate 3, thereby improving the sealing performance of the vacuum tank.

[0043] As a further improvement of this utility model, the inner wall cross-section of the cavity 14 is U-shaped. The side of the cavity 14 away from the sealing ring 13 is the pressure chamber 16, and the side of the cavity 14 close to the sealing ring 13 is the oil return chamber 17. The top inner wall of the oil return chamber 17 is provided with an oil return port 19, and the top of the pressure chamber 16 is provided with a pressure port 18. The inner wall of the pressure port 18 is slidably connected to a pressure rod 20, and the bottom of the pressure rod 20 is fixedly installed with a pressure ring 21 surrounding the sealing ring 13. The pressure ring 21 is in contact with the inner wall of the pressure chamber 16 and forms a sliding fit.

[0044] Specifically, the pressure rod 20 can slide in the inner wall of the pressure port 18, which allows the lubricating oil in the pressure chamber 16 to be pressed to the sealing gasket 15 through the return oil chamber 17, thus enabling automatic lubrication and maintenance.

[0045] As a further improvement of this utility model, a return spring 22 is fixedly connected to the bottom of the pressure ring 21, and the return spring 22 is fixedly connected to the bottom inner wall of the pressure chamber 16.

[0046] Specifically, the reset spring 22 can apply pressure to the pressure ring 21, so that when the cover plate 3 rises, the pressure ring 21 can be reset, thereby allowing the lubricating oil to be drawn into the return oil chamber 17.

[0047] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0048] The working principle of this utility model is as follows: In use, water is filled into the test tank 2 and the test sample is added. The cover plate 3 is placed above the test tank 2. The pressure rod at the bottom of the cover plate 3 can press the sample into the water and immerse it. Rotating the rotating block 9 can make the threaded rod 8 rotate. The rotation of the threaded rod 8, in conjunction with the limiting port 6 and the limiting rod 7, can make the pressure plate 5 move down. At this time, the cover plate 3 can be pressed down. After the sealing ring 13 contacts the anti-leakage gasket, the two can be squeezed together to avoid gas leakage. Therefore, good sealing performance can be guaranteed, and the accuracy of the test results can be avoided.

[0049] As the cover plate 3 moves down, the pressure rod 20 can slide in the inner wall of the pressure port 18. At this time, the pressure ring 21 can squeeze the lubricating oil in the pressure chamber 16. The hydraulic oil can be squeezed through the return oil chamber 17 to the return oil port 19 and located around the sealing gasket 15. This can lubricate the anti-leakage gasket, increase the service life of the sealing gasket 15, and ensure the sealing performance of the sealing gasket 15. After the cover plate 3 is opened, the pressure ring 21 moves in the opposite direction. At this time, the lubricating oil can be drawn into the return oil chamber 17, which can then be reused for repeated lubrication.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum sealing tester, comprising a vacuum tester body (1), wherein a test container (2) is fixedly mounted on the top of the vacuum tester body (1), and a cover plate (3) is attached to the top of the test container (2), characterized in that: The test container (2) is provided with a sealing mechanism on its side and a leak-proof mechanism inside the test container (2); The sealing mechanism includes two symmetrically distributed connecting plates (4), a pressure plate (5) is provided above the cover plate (3), the pressure plate (5) is in contact with the top of the cover plate (3), a limit opening (6) is opened on the top of the pressure plate (5), and a limit rod (7) that forms a sliding fit with the limit opening (6) is fixedly connected to the top of the connecting plate (4).

2. The vacuum sealing tester according to claim 1, characterized in that: The bottom of the connecting plate (4) is rotatably connected to a threaded rod (8) via a bearing. The threaded rod (8) is connected to the pressure plate (5) via a thread. A rotating block (9) is fixedly installed at the bottom of the threaded rod (8).

3. The vacuum sealing tester according to claim 2, characterized in that: A positioning rod (10) is hinged to one side of the bottom of the connecting plate (4), and a number of evenly distributed positioning holes (11) are opened on the bottom edge of the rotating block (9). The positioning rod (10) and the inner wall of the positioning hole (11) form a sliding fit.

4. A vacuum sealing tester according to claim 3, characterized in that: A positioning spring (12) is fixedly connected to the bottom of the connecting plate (4), and the positioning spring (12) is fixedly connected to the positioning rod (10).

5. A vacuum sealing tester according to claim 1, characterized in that: The leak-proof mechanism includes a sealing ring (13) fixedly connected to the bottom of the cover plate (3), and a cavity (14) is opened on the side of the test tank (2). A leak-proof pad surrounding the sealing ring (13) is fixedly connected to the inner wall of the test tank (2). The leak-proof pad is made of rubber, and the sealing ring (13) abuts against the leak-proof pad.

6. A vacuum sealing tester according to claim 5, characterized in that: One side of the leak-proof pad has an arc-shaped structure, and the cavity (14) is filled with lubricating oil.

7. A vacuum sealing tester according to claim 6, characterized in that: The top of the test tank (2) is fixedly connected to a sealing gasket (15) surrounding the sealing ring (13), and the sealing gasket (15) is made of rubber.

8. A vacuum sealing tester according to claim 7, characterized in that: The inner wall of the cavity (14) has a U-shaped cross-section. The side of the cavity (14) away from the sealing ring (13) is a pressure chamber (16), and the side of the cavity (14) close to the sealing ring (13) is a return oil chamber (17). The top inner wall of the return oil chamber (17) is provided with a return oil port (19), and the top of the pressure chamber (16) is provided with a pressure port (18). The inner wall of the pressure port (18) is slidably connected to a pressure rod (20), and a pressure ring (21) surrounding the sealing ring (13) is fixedly installed at the bottom of the pressure rod (20). The pressure ring (21) is in contact with the inner wall of the pressure chamber (16) and forms a sliding fit.

9. A vacuum sealing tester according to claim 8, characterized in that: A return spring (22) is fixedly connected to the bottom of the pressure ring (21), and the return spring (22) is fixedly connected to the bottom inner wall of the pressure chamber (16).

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