Vacuum leak detector

Abstract

The utility model discloses a vacuum leak detector which comprises a vacuum sealing performance tester, a barrel body is movably arranged at the top of the vacuum sealing performance tester, and a positioning ring is integrally formed on the surface of the lower part of the barrel body; according to the utility model, the two L-shaped seats are symmetrically arranged on the top surface of the vacuum sealing performance tester, the barrel body with the positioning ring is arranged between the two L-shaped seats, and then the plum blossom knob screwed on the L-shaped seats is rotated, so that the plum blossom knob pushes the positioning arc to move downwards under the action of the shaft seat; the positioning circular arc is close to the positioning ring of the barrel body under the guiding action of the T-shaped sliding block and the sliding groove, so that the positioning circular arc is in contact with the positioning ring, a plurality of positioning columns of the positioning circular arc are connected with a plurality of positioning holes correspondingly formed in the surface of the positioning ring in an inserted mode, and the effect of positioning the barrel body is achieved. The requirement for reliable installation of the barrel body can be met to the maximum extent, and the effect of zero falling of the barrel body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing testing equipment, in particular to a vacuum leak detector. Background Art

[0002] A vacuum sealing performance tester usually consists of a shell, a vacuum pump and an exhaust pipe. During the test, the barrel needs to be placed on the vacuum sealing performance tester, connected to the barrel through the exhaust pipe, and then the bottle to be tested is placed in the barrel filled with water, and then the cover is put on, and the bottle is pressed down by the pressure plate on the cover so that the water can cover the bottle, and then the inside of the barrel is vacuumed by the vacuum sealing performance tester. If the bottle is not airtight enough, the water in the barrel will penetrate into the bottle under a high vacuum.

[0003] After searching, the announcement number CN218646523U discloses a vacuum sealing performance tester, which belongs to the field of sealing testing technology, and includes a vacuum sealing performance tester body. The top of the vacuum sealing performance tester body is provided with a barrel body and two fixed blocks, and the two fixed blocks are respectively located on both sides of the barrel body. Screws are threaded through the two fixed blocks, and the two screws are respectively abutted against the two sides of the barrel body. The top cover of the barrel body is provided with a cover body. By rotating the screw clockwise on the fixed block, the screw can be made to abut against the outer walls of the two sides of the barrel body respectively. It can be suitable for barrels of different sizes and improves the stability of the barrel body installation. The vibration-damping pad can further reduce the vibration of the barrel body brought to the vacuum sealing performance tester, and try to avoid the vibration generated when the vacuum pump inside the vacuum sealing performance tester is working, which easily causes the shaking and movement of the barrel body, and reduces the phenomenon of the barrel body falling from the vacuum sealing performance tester.

[0004] However, the above scheme adopts the method of abutting the screw against the barrel body to maintain the stability of the barrel body in the vibration stage. However, in the actual process, due to the size of the vacuum sealing performance tester, the size of the barrel body is often fixed, and due to the method of abutting the screw against the barrel body, it is easy to cause poor barrel restraint effect and slippage, resulting in the stability of the barrel body in the vacuum leak detection stage is still insufficient.

[0005] To this end, a vacuum leak detector is proposed, which has the advantage of being easy to efficiently fix the barrel body, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and provides a vacuum leak detector.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum leak detector, including a vacuum sealing performance tester, a barrel body is movably arranged on the top of the vacuum sealing performance tester, and a positioning ring is integrally formed on the lower surface of the barrel body, two L-shaped seats are fixed on the top of the vacuum sealing performance tester, and a plum blossom knob is screwed on each L-shaped seat, and a slide groove is opened on the inner side surface of each L-shaped seat, a positioning arc is rotatably installed on the bottom of the plum blossom knob through an axle seat, and the positioning arc is against the positioning ring of the barrel body, and the convex surface of the positioning arc is fixedly connected with A T-shaped slider is slidably connected to the slide groove on the inner side of the L-shaped seat, a plurality of positioning columns are fixed to the bottom surface of the positioning arc, a plurality of positioning holes are provided on the surface of the positioning ring corresponding to the positioning columns, the positioning columns of the positioning arc are plugged into the positioning holes, a cover plate is movably provided at the opening on the top surface of the barrel body, and a lower pressure rod is inserted at the center of the cover plate, a pressure plate is fixed to the bottom of the lower pressure rod, and a plurality of conical columns are fixed to the surface of the pressure plate, a vacuum tube is provided on the right side wall of the vacuum sealing performance tester, and one end of the vacuum tube passes through the cover plate and extends to the inner side of the barrel body.

[0008] As a further description of the above technical solution: the cover plate is a disc-shaped structure as a whole, and an annular connecting sleeve is provided at the center of the cover plate corresponding to the lower pressure rod, and a rubber ring is embedded and installed on the inner side of the annular connecting sleeve of the cover plate, and the inner ring of the rubber ring of the cover plate contacts the outer wall of the lower pressure rod.

[0009] As a further description of the above technical solution: the convex surface of the positioning arc is provided with an extension portion, and the top surface of the extension portion is connected to the plum blossom knob through the shaft seat, and the side surface of the extension portion is connected to the T-shaped slider.

[0010] As a further description of the above technical solution: the two L-shaped seats are symmetrical about the vertical center line of the vacuum sealing performance tester, and the positioning arc concave surfaces of the two L-shaped seats are adapted to the arc surface contour of the outer wall of the barrel body.

[0011] As a further description of the above technical solution: the front end surface of the vacuum sealing performance tester is provided with an inclined surface, and the display panel and the button panel are embedded and installed on the inclined surface.

[0012] As a further description of the above technical solution: a plurality of rectangular openings are opened on the surface of the pressing plate, and the plurality of rectangular openings are staggered with a plurality of conical columns on the bottom surface of the pressing plate.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, two L-shaped seats are symmetrically installed on the top surface of the vacuum sealing performance tester. By placing a barrel body with a positioning ring between the two L-shaped seats, and then rotating the plum blossom knob screwed on the L-shaped seat, the plum blossom knob pushes the positioning arc downward under the action of the shaft seat. The positioning arc is guided by the T-shaped slider and the slide groove to approach the positioning ring of the barrel body, so that the positioning arc contacts the positioning ring, and a number of positioning columns of the positioning arc are plugged into a number of positioning holes correspondingly opened on the surface of the positioning ring, so as to achieve the effect of positioning the barrel body. Compared with the prior art, the arrangement of the positioning arc and the positioning ring can meet the demand for reliable installation of the barrel body to the greatest extent, and achieve the effect of zero falling off of the barrel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a vacuum leak detector of the utility model;

[0016] Figure 2 This is a top view of a vacuum sealing performance tester of a vacuum leak detector of the utility model (without the barrel installed);

[0017] Figure 3 This is a schematic diagram of the internal structure of a barrel of a vacuum leak detector of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the barrel structure of a vacuum leak detector (without the cover plate installed).

[0019] Legend:

[0020] 1. Vacuum sealing performance tester; 2. Barrel body; 3. Cover plate; 4. Vacuum tube; 5. Down pressure rod; 6. L-shaped seat; 7. Positioning ring; 8. Plum blossom knob; 9. Slide groove; 10. Positioning arc; 11. T-shaped slider; 12. Positioning column; 13. Pressure plate; 14. Conical column; 15. Positioning hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] According to an embodiment of the utility model, a vacuum leak detector is provided.

[0023] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, a vacuum leak detector according to an embodiment of the utility model includes a vacuum sealing performance tester 1, a barrel body 2 is movably arranged on the top of the vacuum sealing performance tester 1, and a positioning ring 7 is integrally formed on the lower surface of the barrel body 2, two L-shaped seats 6 are fixed on the top of the vacuum sealing performance tester 1, and a plum blossom knob 8 is screwed on each L-shaped seat 6, and a slide groove 9 is opened on the inner side of each L-shaped seat 6, a positioning arc 10 is rotatably installed on the bottom of the plum blossom knob 8 through an axle seat, and the positioning arc 10 is abutted against the positioning ring 7 of the barrel body 2, a T-shaped slider 11 is fixed to the convex surface of the positioning arc 10, and the T-shaped slider 11 is slidably connected to the slide groove 9 on the inner side of the L-shaped seat 6, and the bottom surface of the positioning arc 10 is fixed with There are several positioning posts 12, and the surface of the positioning ring 7 is provided with several positioning holes 15 corresponding to the positioning posts 12. The positioning posts 12 of the positioning arc 10 are plugged into the positioning holes 15. A cover plate 3 is movably provided at the opening of the top surface of the barrel body 2, and a lower pressure rod 5 is inserted at the center of the cover plate 3. A pressing plate 13 is fixedly connected to the bottom of the lower pressure rod 5, and several conical posts 14 are fixed on the surface of the pressing plate 13. A vacuum tube 4 is provided on the right side wall of the vacuum sealing performance tester 1, and one end of the vacuum tube 4 passes through the cover plate 3 and extends to the inner side of the barrel body 2. Several conical posts 14 are fixed on the bottom surface of the pressing plate 13, which can force the bottle to be tested to be restrained in the gap between the several conical posts 14, so that it is not easy to deflect and is easy to vacuumize and detect;

[0024] In one embodiment, the cover plate 3 is a disc-shaped structure as a whole, and an annular connecting sleeve is provided at the center of the cover plate 3 corresponding to the lower pressure rod 5, and a rubber ring is embedded and installed on the inner side of the annular connecting sleeve of the cover plate 3, and the inner ring of the rubber ring of the cover plate 3 is in contact with the outer wall of the lower pressure rod 5. The arrangement of the annular connecting sleeve and the rubber ring makes it easy to install the lower pressure rod 5, and the arrangement of the rubber ring makes it difficult for the lower pressure rod 5 to retract due to buoyancy at any position.

[0025] In one embodiment, the convex surface of the positioning arc 10 is provided with an extension portion, and the top surface of the extension portion is connected to the plum blossom knob 8 through a shaft seat, and the side surface of the extension portion is connected to the T-shaped slider 11. That is, the positioning arc 10 includes the extension portion. Through the setting of the extension portion, the installation of the T-shaped slider 11 and the plum blossom knob 8 can be facilitated.

[0026] In one embodiment, the two L-shaped seats 6 are symmetrical about the vertical center line of the vacuum sealing performance tester 1 , and the concave surfaces of the positioning arcs 10 of the two L-shaped seats 6 are adapted to the arc surface contour of the outer wall of the barrel body 2 .

[0027] In one embodiment, the front end surface of the vacuum sealing performance tester 1 is provided with an inclined surface, and a display panel and a button panel are embedded and installed on the inclined surface. The setting of the display panel and the button panel facilitates the operation of the staff. The vacuum sealing performance tester 1 is a vacuum leak detector. The principle of the vacuum sealing performance tester 1 is an existing known technology, and there are mature products, so its principle is not further explained.

[0028] In one embodiment, a plurality of rectangular openings are provided on the surface of the pressing plate 13, and the plurality of rectangular openings are staggered with the plurality of conical columns 14 on the bottom surface of the pressing plate 13. Through the setting of the rectangular openings, the pressing plate 13 has a hollow structure, which is easy to be inserted into the water to press down the bottle to be tested.

[0029] Working principle:

[0030] When in use, the barrel body 2 with the positioning ring 7 is placed between the two L-shaped seats 6, and then the plum blossom knob 8 screwed on the L-shaped seat 6 is rotated, so that the plum blossom knob 8 pushes the positioning arc 10 downward under the action of the shaft seat, and the positioning arc 10 is guided by the T-shaped slider 11 and the slide groove 9 to approach the positioning ring 7 of the barrel body 2, so that the positioning arc 10 contacts the positioning ring 7, and the positioning columns 12 of the positioning arc 10 are plugged into the corresponding positioning holes 15 on the surface of the positioning ring 7, so as to fix the barrel body 2 so that it will not be damaged by the real The vacuum sealing performance tester 1 falls off due to the vibration during operation, and then is connected to the cover 3 of the barrel 2 through a vacuum tube 4. Then the bottle to be tested is placed in the barrel 2 filled with water, and then the cover is closed. The pressing plate 13 is pressed by pushing the pressing rod 5 on the cover 3, so that the several conical columns 14 at the bottom of the pressing plate 13 press the bottle downward so that the water can cover the bottle. Then, the inside of the barrel 2 is vacuumed through the vacuum sealing performance tester 1. If the airtightness of the bottle is insufficient, the water in the barrel 2 will penetrate into the bottle under a high vacuum.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum leak detector, comprising a vacuum sealing performance tester (1), characterized in that: The top of the vacuum sealing performance tester (1) is movably provided with a barrel body (2), and a positioning ring (7) is integrally formed on the lower surface of the barrel body (2). Two L-shaped seats (6) are fixed on the top of the vacuum sealing performance tester (1), and each L-shaped seat (6) is screwed with a plum blossom knob (8), and a slide groove (9) is provided on the inner side of each L-shaped seat (6). A positioning arc (10) is rotatably installed on the bottom of the plum blossom knob (8) through an axle seat, and the positioning arc (10) abuts against the positioning ring (7) of the barrel body (2). A T-shaped slider (11) is fixedly connected to the convex surface of the positioning arc (10), and the T-shaped slider (11) is slidably connected to the slide groove (9) on the inner side of the L-shaped seat (6). A plurality of positioning columns (12) are fixed to the bottom surface of the positioning arc (10), a plurality of positioning holes (15) are opened on the surface of the positioning ring (7) corresponding to the positioning columns (12), the positioning columns (12) of the positioning arc (10) are plugged into the positioning holes (15), a cover plate (3) is movably arranged at the opening of the top surface of the barrel body (2), and a lower pressure rod (5) is inserted at the center of the cover plate (3), a pressure plate (13) is fixedly connected to the bottom of the lower pressure rod (5), and a plurality of conical columns (14) are fixed to the surface of the pressure plate (13), and a vacuum tube (4) is arranged on the right side wall of the vacuum sealing performance tester (1), and one end of the vacuum tube (4) passes through the cover plate (3) and extends to the inner side of the barrel body (2).

2. A vacuum leak detector according to claim 1, characterized in that: The cover plate (3) is a disc-shaped structure as a whole, and an annular connecting sleeve is provided at the center of the cover plate (3) corresponding to the lower pressure rod (5), and a rubber ring is embedded and installed inside the annular connecting sleeve of the cover plate (3), and the inner ring of the rubber ring of the cover plate (3) is in contact with the outer wall of the lower pressure rod (5).

3. A vacuum leak detector according to claim 1, characterized in that: The convex surface of the positioning arc (10) is provided with an extension portion, and the top surface of the extension portion is connected to the plum blossom knob (8) via a shaft seat, and the side surface of the extension portion is connected to the T-shaped slider (11).

4. A vacuum leak detector according to claim 1, characterized in that: The two L-shaped seats (6) are symmetrical about the vertical center line of the vacuum sealing performance tester (1), and the concave surfaces of the positioning arcs (10) of the two L-shaped seats (6) are adapted to the arc surface contour of the outer wall of the barrel body (2).

5. A vacuum leak detector according to claim 1, characterized in that: The front end surface of the vacuum sealing performance tester (1) is provided with an inclined surface, and a display panel and a key panel are embedded and installed on the inclined surface.

6. A vacuum leak detector according to claim 1, characterized in that: The surface of the pressing plate (13) is provided with a plurality of rectangular openings, and the plurality of rectangular openings are staggered with a plurality of conical columns (14) on the bottom surface of the pressing plate (13).

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