Vacuum test box with high sealing performance

Abstract

The utility model relates to the technical field of vacuum test boxes, in particular to a vacuum test box with strong sealing performance, which comprises a main body, the main body comprises a test box body, the surface of the test box body is movably connected with a box cover, a net plate is arranged in the test box body, the surface of the test box body is fixedly connected with a sealing strip, and the box cover is fixedly connected with the sealing strip. Pulleys are mounted at the bottom of the test box body; and the sealing mechanism comprises a first sealing ring. According to the utility model, the first sealing ring is arranged on the box cover, and the second sealing ring is arranged on the inner surface of the test box body, so that the first sealing ring and the second sealing ring can be clamped after the box cover is closed, the first sealing ring is propped against the second sealing plate, and the first sealing plate is propped against the test box body; the sealing effect of the joint of the box body and the box cover of the test box is enhanced, so that the sealing performance of the vacuum test box is prevented from being influenced by the action of a single sealing strip.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum test boxes, in particular to a vacuum test box with strong sealing performance. Background Art

[0002] The vacuum test chamber is a commonly used equipment in chemistry, physics, biology and other laboratories. Generally, one side is made of heat-resistant transparent glass, so that the condition of the materials inside can be seen. It is also equipped with a heating device and is mainly used for heating, drying, constant weight and other treatments of some heat-sensitive materials.

[0003] When using a vacuum test chamber, the box cover and the sealing strip must be pressed together to achieve sealing inside the box. However, in the process of adding material processing, the existing vacuum test chamber only seals the box with the sealing strip. After long-term use and squeezing, the sealing strip is easily damaged and deformed, which directly affects the sealing effect of the vacuum test chamber. Utility Model Content

[0004] The utility model aims to provide a vacuum test box with strong sealing performance, so as to solve the problem proposed in the above background technology that the vacuum test box is sealed only by a sealing strip during material processing, and the sealing strip is easily damaged and deformed after long-term use and squeezing, which directly affects the sealing effect of the vacuum test box.

[0005] In order to achieve the above object, the utility model provides the following technical solution, a vacuum test box with strong sealing performance, comprising:

[0006] The main body comprises a test box body, a box cover is movably connected to the surface of the test box body, a mesh plate is arranged inside the test box body, a sealing strip is fixedly connected to the surface of the test box body, and a pulley is installed at the bottom of the test box body;

[0007] The sealing mechanism comprises a first sealing ring, which is installed on the surface of the box cover, and a first sealing plate is fixedly connected to the surface of the first sealing ring. A second sealing ring is arranged on the inner surface of the test box body, and a second sealing plate is fixedly connected to the surface of the second sealing ring. A mounting hole is provided on the surface of the first sealing plate, and a screw hole is provided on the surface of the box cover, and a screw is installed on the surface of the mounting hole.

[0008] Preferably, the cross-sections of the first sealing ring and the first sealing plate are in a U-shape, the size of the first sealing ring is smaller than that of the second sealing ring, the size of the first sealing plate is larger than that of the second sealing plate, and arc grooves are provided on the surfaces of the first sealing ring and the second sealing ring.

[0009] Preferably, two groups of mounting holes and screw holes are provided, one group of mounting holes is opened on the surface of the first sealing plate, and the other group of mounting holes is opened on the surface of the second sealing plate, one group of screw holes is opened on the surface of the box cover, and the other group of screw holes is opened on the surface of the test box body.

[0010] Preferably, the screws are provided in two groups, one group of the screws is installed on the surface of the first sealing plate, and the other group of the screws is installed on the surface of the second sealing plate, and the screws are connected to the surface of the screw holes through threads.

[0011] Preferably, an adjustment mechanism is provided on the surface of the mesh plate, and the adjustment mechanism includes a limit groove, and the limit groove is opened on the inner surface of the test box body. The surface of the mesh plate is fixedly connected to an installation bin, and a slot is opened on the surface of the installation bin, and a limit plate is installed on the surface of the slot. The surface of the limit plate is fixedly connected to a movable plate, and the surface of the movable plate is installed with a support spring.

[0012] Preferably, the cross-section of the limiting groove is square, two groups of the limiting groove and the installation bin are provided, the two groups of the installation bin are fixedly connected to both sides of the mesh plate, and two groups of the slots are provided, the two groups of the slots are opened on both sides of the installation bin.

[0013] Preferably, one side of the limit plate is abutted and connected to the outer surface of the installation bin, the other side of the limit plate is snap-connected to the surface of the limit groove, the movable plate is slidably connected to the inner surface of the installation bin, one end of the support spring is fixedly connected to the surface of the movable plate, and the other end of the support spring is fixedly connected to the surface of the installation bin.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By arranging a first sealing ring on the box cover and a second sealing ring on the inner surface of the test box body, the first sealing ring and the second sealing ring can be engaged after the box cover is closed, and the first sealing ring abuts against the second sealing plate, and the first sealing plate abuts against the test box body, so that the sealing effect of the connection between the test box body and the box cover is enhanced, so as to avoid affecting the sealing of the vacuum test box by relying on the effect of a single sealing strip.

[0016] 2. By opening a limit slot in the test box body and under the action of the supporting force applied by the support spring, the limit plate and the limit slots at different positions are engaged, thereby adjusting the position of the mesh plate, thereby changing the distance between two adjacent mesh plates, so that when the material is placed in it, the position of the mesh plate can be adjusted according to its own size to avoid limiting the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view stereoscopic schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a top-down perspective schematic diagram of the structure of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the structure of the first sealing ring of the utility model;

[0020] Figure 4 It is a partial three-dimensional cross-sectional schematic diagram of the structure of the limit groove of the utility model;

[0021] Figure 5 For this utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 6 For this utility model Figure 4 A schematic diagram of a partial three-dimensional cross-sectional view of the structure of the middle installation chamber.

[0023] In the figure: 1. test box body; 11. box cover; 12. mesh plate; 13. sealing strip; 14. pulley; 2. first sealing ring; 21. first sealing plate; 22. second sealing ring; 23. second sealing plate; 24. mounting hole; 25. screw hole; 26. screw; 3. limiting groove; 31. mounting compartment; 32. slot; 33. limiting plate; 34. movable plate; 35. support spring. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-6 , an embodiment provided by the utility model:

[0026] A vacuum test box with strong sealing performance, comprising:

[0027] The main body includes a test box body 1, a box cover 11 is movably connected to the surface of the test box body 1, a mesh plate 12 is arranged inside the test box body 1, a sealing strip 13 is fixedly connected to the surface of the test box body 1, and a pulley 14 is installed at the bottom of the test box body 1. When using the vacuum test box, the box cover 11 is first opened, the material is placed on the mesh plate 12, and then the box cover 11 is closed and abutted against the sealing strip 13, and finally the device is opened to process the material;

[0028] The sealing mechanism includes a first sealing ring 2, which is installed on the surface of the box cover 11. The surface of the first sealing ring 2 is fixedly connected to the first sealing plate 21. The inner surface of the test box body 1 is provided with a second sealing ring 22. The surface of the second sealing ring 22 is fixedly connected to the second sealing plate 23. The surface of the first sealing plate 21 is provided with a mounting hole 24. The surface of the box cover 11 is provided with a screw hole 25. The surface of the mounting hole 24 is installed with a screw 26. After closing the box cover 11, the first sealing ring 2 abuts against the surface of the second sealing plate 23, and the first sealing plate 21 abuts against the surface of the sealing strip 13 and the test box body 1, so that a closed space is formed at the connection between the first sealing ring 2 and the second sealing ring 22, thereby achieving a better sealing effect. The material of the first sealing ring 2, the first sealing plate 21, the second sealing ring 22 and the second sealing plate 23 is the same as that of the sealing strip 13.

[0029] Furthermore, the cross-sections of the first sealing ring 2 and the first sealing plate 21 are in a U-shape, the size of the first sealing ring 2 is smaller than that of the second sealing ring 22, the size of the first sealing plate 21 is larger than that of the second sealing plate 23, and arc grooves are provided on the surfaces of the first sealing ring 2 and the second sealing ring 22. When the box cover 11 is closed, the first sealing ring 2 and the second sealing ring 22 are snap-fitted and connected via the arc grooves.

[0030] Furthermore, two groups of mounting holes 24 and screw holes 25 are provided, one group of mounting holes 24 is opened on the surface of the first sealing plate 21, the other group of mounting holes 24 is opened on the surface of the second sealing plate 23, one group of screw holes 25 is opened on the surface of the box cover 11, and the other group of screw holes 25 is opened on the surface of the test box body 1. Under the action of the mounting holes 24 and the screw holes 25, the screws 26 can be installed on its surface.

[0031] Furthermore, two groups of screws 26 are provided, one group of screws 26 is installed on the surface of the first sealing plate 21, and the other group of screws 26 is installed on the surface of the second sealing plate 23. The screws 26 are connected to the surface of the screw holes 25 through threads. Under the connection between the screws 26 and the screw holes 25, the first sealing plate 21 and the second sealing plate 23 can be installed and fixed, and the first sealing plate 21 and the second sealing plate 23 can be disassembled and replaced.

[0032] Furthermore, an adjustment mechanism is provided on the surface of the mesh 12, and the adjustment mechanism includes a limit groove 3, which is opened on the inner surface of the test box body 1, and the surface of the mesh 12 is fixedly connected with a mounting bin 31, and the surface of the mounting bin 31 is opened with a slot 32, and the surface of the slot 32 is installed with a limit plate 33, and the surface of the limit plate 33 is fixedly connected with a movable plate 34, and the surface of the movable plate 34 is installed with a support spring 35. Through the action of the limit groove 3, the position of the mesh 12 in the test box body 1 can be adjusted, thereby realizing the adjustment of the distance between adjacent mesh panels 12.

[0033] Furthermore, the cross-section of the limit groove 3 is square, and two groups of limit grooves 3 and installation bins 31 are provided, and the two groups of installation bins 31 are fixedly connected to the two sides of the mesh plate 12. Two groups of slots 32 are provided, and the two groups of slots 32 are opened on both sides of the installation bin 31. Under the action of the slots 32, the limit plate 33 passes through the slots 32 to penetrate the installation bin 31.

[0034] Furthermore, one side of the limit plate 33 is abutted and connected to the outer surface of the installation bin 31, the other side of the limit plate 33 is engaged and connected to the surface of the limit slot 3, the movable plate 34 is slidably connected to the inner surface of the installation bin 31, one end of the support spring 35 is fixedly connected to the surface of the movable plate 34, and the other end of the support spring 35 is fixedly connected to the surface of the installation bin 31. The cross-section of the limit plate 33 is "L"-shaped, and the limit plate 33 slides on the mesh plate 12 and the slot 32. The limiting effect of the limit plate 33 can be achieved through the movable plate 34. Under the action of the support spring 35, a supporting force is provided on the movable plate 34, thereby promoting the engagement of the limit plate 33 and the limit slot 3.

[0035] Working principle: When using the vacuum test chamber, first, the first sealing ring 2 and the first sealing plate 21 are pressed against the surface of the box cover 11, and the hole positions of the mounting hole 24 and the screw hole 25 are aligned, the screw 26 is inserted into the mounting hole 24 and connected to the screw hole 25 under the action of the thread, so that the screw 26 is pressed against the surface of the first sealing plate 21, and at the same time, the first sealing plate 21 and the second sealing plate 23 are pressed against the inner surface of the test chamber body 1, and the hole positions of the mounting hole 24 and the screw hole 25 are aligned, the screw 26 is inserted into the mounting hole 24 and connected to the screw hole 25 under the action of the thread, so that the screw 26 is pressed against the second sealing plate 23, and after putting in the material, the box cover 11 is rotated so that the first sealing ring 2 and the first sealing plate 21 are engaged through the arc groove, and the first sealing ring 2 is pressed against the second sealing plate 23, and the first sealing plate 21 is pressed against the sealing strip 13 and the surface of the test chamber body 1.

[0036] When placing materials on the mesh plate 12, adjust the distance between two adjacent mesh plates 12 according to the size of the materials. First, pull the limit plates 33 on both sides of the mesh plate 12 to make the limit plates 33 slide along the slots 32 and the surface of the mesh plate 12, so that the movable plate 34 slides on the inner surface of the installation bin 31, and the support spring 35 is in a compressed state. The limit slot 3 and the limit plate 33 are no longer engaged. After the distance is adjusted, release the limit plate 33 to engage with the limit slot 3 at that position to complete the adjustment of the distance between adjacent mesh plates 12.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum test box with strong sealing performance, characterized in that: include: The main body comprises a test box body (1), a box cover (11) is movably connected to the surface of the test box body (1), a mesh plate (12) is arranged inside the test box body (1), a sealing strip (13) is fixedly connected to the surface of the test box body (1), and a pulley (14) is installed at the bottom of the test box body (1); The sealing mechanism comprises a first sealing ring (2), wherein the first sealing ring (2) is mounted on the surface of a box cover (11), a first sealing plate (21) is fixedly connected to the surface of the first sealing ring (2), a second sealing ring (22) is arranged on the inner surface of a test box body (1), a second sealing plate (23) is fixedly connected to the surface of the second sealing ring (22), a mounting hole (24) is provided on the surface of the first sealing plate (21), a screw hole (25) is provided on the surface of the box cover (11), and a screw (26) is installed on the surface of the mounting hole (24).

2. A vacuum test box with strong sealing performance according to claim 1, characterized in that: The cross-sections of the first sealing ring (2) and the first sealing plate (21) are in the shape of a square. The size of the first sealing ring (2) is smaller than the size of the second sealing ring (22). The size of the first sealing plate (21) is larger than the size of the second sealing plate (23). The surfaces of the first sealing ring (2) and the second sealing ring (22) are provided with arc grooves.

3. The vacuum test box with strong sealing performance according to claim 1, characterized in that: The mounting holes (24) and screw holes (25) are provided in two groups, one group of the mounting holes (24) is opened on the surface of the first sealing plate (21), and the other group of the mounting holes (24) is opened on the surface of the second sealing plate (23); one group of the screw holes (25) is opened on the surface of the box cover (11), and the other group of the screw holes (25) is opened on the surface of the test box body (1).

4. The vacuum test box with strong sealing performance according to claim 1, characterized in that: The screws (26) are provided in two groups, one group of the screws (26) is installed on the surface of the first sealing plate (21), and the other group of the screws (26) is installed on the surface of the second sealing plate (23), and the screws (26) are connected to the surface of the screw holes (25) through threads.

5. The vacuum test box with strong sealing performance according to claim 1, characterized in that: The surface of the mesh plate (12) is provided with an adjustment mechanism, the adjustment mechanism comprises a limit groove (3), the limit groove (3) is provided on the inner surface of the test box body (1), the surface of the mesh plate (12) is fixedly connected with an installation bin (31), the surface of the installation bin (31) is provided with a slot (32), the surface of the slot (32) is installed with a limit plate (33), the surface of the limit plate (33) is fixedly connected with a movable plate (34), and the surface of the movable plate (34) is installed with a support spring (35).

6. A vacuum test box with strong sealing performance according to claim 5, characterized in that: The cross section of the limiting groove (3) is square, and two groups of the limiting groove (3) and the installation bin (31) are provided, and the two groups of the installation bin (31) are fixedly connected to the two sides of the mesh plate (12), and two groups of the slots (32) are provided, and the two groups of the slots (32) are opened on the two sides of the installation bin (31).

7. The vacuum test box with strong sealing performance according to claim 5, characterized in that: One side of the limit plate (33) is abutted against the outer surface of the installation bin (31), the other side of the limit plate (33) is snap-connected to the surface of the limit groove (3), the movable plate (34) is slidably connected to the inner surface of the installation bin (31), one end of the support spring (35) is fixedly connected to the surface of the movable plate (34), and the other end of the support spring (35) is fixedly connected to the surface of the installation bin (31).

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