Quickly-clamped sealing performance test cavity

Abstract

The utility model belongs to the technical field of sealing performance testing cavities, and particularly relates to a sealing performance testing cavity capable of being quickly clamped, which adopts the following scheme that the sealing performance testing cavity comprises a testing cavity bottom, and mounting holes are formed in the two sides of the testing cavity bottom; the test cavity cover is arranged at the top of the test cavity cover; according to the utility model, through the cooperative use of the locking mechanism, the problems that when a vacuum pressure attenuation method is adopted in a laboratory to detect the sealing performance of a medicine package at present, a sample in a closed container adopted during testing is inconvenient to replace, and threads of the closed container are easy to damage are solved; the utility model provides a quick-clamping sealing performance testing cavity, which is convenient for testing personnel to quickly replace a sample, improves the working efficiency, cancels a gasket structure at the bottom of a conventional testing cavity, reduces a gap between a bushing and the inner wall of the bottom of the testing cavity, adds an air guide structure of the bushing, reduces the volume of the internal gap, and improves the testing precision.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing test chambers, in particular to a fast-clamping sealing test chamber. Background Art

[0002] When the vacuum / pressure decay method is used in the laboratory to detect the sealing of pharmaceutical packaging, the sample needs to be placed in a closed container. By vacuuming or pressurizing, the pressure change is detected to determine whether the sample to be tested is packaged intact. The size of the void volume in the container directly affects the accuracy of the test.

[0003] The commonly used closed containers for testing on the market usually use threads to connect the test cavity cover and the test cavity bottom. Each time the sample is replaced, the threads of the test cavity cover need to be unscrewed to completely disengage the test cavity cover and the test cavity bottom, and then the sample is replaced. This method requires the test cavity cover to be screwed many times to completely unscrew the threads, which is very laborious to replace the sample. In addition, frequent tightening and loosening of the threads will damage the thread surface and produce stainless steel powder. Once it is sucked into the test system, it will affect the test results. There is a large gap between the bushing and the inner wall in the traditional closed container, and a gasket is provided at the bottom. The void volume in the container is large, which affects the test accuracy. Therefore, the utility model proposes a quick-clamping sealing test cavity to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the common closed containers for testing on the market usually use threads to connect the test cavity cover and the test cavity bottom. Each time the sample is replaced, the threads of the test cavity cover need to be unscrewed to completely disengage the test cavity cover and the test cavity bottom, and then the sample is replaced. This method requires that the test cavity cover be screwed many times to completely unscrew the threads, which is very laborious to replace the sample. In addition, frequent tightening and loosening of the threads will damage the thread surface and produce stainless steel powder, which will affect the test results once it is sucked into the test system. There is a large gap between the liner and the inner wall in the traditional closed container, and a gasket is provided at the bottom. The void volume in the container is large, which affects the accuracy of the test. A quick-clamping sealing test cavity is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A quick-clamping sealing test chamber, comprising:

[0007] A test cavity bottom, with mounting holes on both sides of the test cavity bottom;

[0008] A test chamber cover, the test chamber cover is arranged on the top of the test chamber cover;

[0009] A bushing, wherein the bushing is arranged in the inner cavity of the bottom of the test cavity;

[0010] A sample, wherein the sample is disposed in the inner cavity of the bushing;

[0011] A sealing ring, the sealing ring being arranged at the top of the bottom of the test cavity;

[0012] The locking mechanism is located on both sides of the test cavity bottom and is used to seal and lock the test cavity bottom and the test cavity cover.

[0013] As a preferred solution of the utility model, the locking device includes: a cam handle, a spring, a locking rod, a connecting rod, a locking base and a pin;

[0014] Both sides of the test cavity bottom are fixedly connected to the locking base, a through hole is opened on the front side of the locking base, there are two pins, both of which are rotatably connected to the inner cavities of the two locking bases, the bottom of the connecting rod is rotatably connected to the pin, the top of the connecting rod is fixedly connected to the bottom of the locking rod, the top of the locking rod passes through the test cavity cover and is rotatably connected to the cam handle through a rotating shaft, there are two springs, and the springs are fixedly sleeved on the surface of the locking rod.

[0015] As a preferred solution of the utility model, U-shaped grooves are provided on both sides of the test cavity cover, and ventilation grooves are provided on both sides and the bottom of the bushing.

[0016] As a preferred solution of the utility model, the locking base is fixedly connected to the bottom of the test cavity by screws, and the bolts are used in conjunction with the mounting holes.

[0017] As a preferred solution of the utility model, the top of the connecting rod is provided with an internal thread, and the bottom of the locking rod is provided with an external thread, and the internal thread and the external thread are used in conjunction with each other.

[0018] As a preferred solution of the utility model, a mounting hole is opened on the front side of the cam handle, and the cam handle is rotatably connected to the inner cavity of the locking rod through a rotating shaft.

[0019] Beneficial effects:

[0020] 1. The cam handle, U-shaped groove, spring, locking rod, connecting rod, locking base, pin shaft and ventilation groove make it convenient for testers to quickly replace the sample and improve work efficiency. At the same time, the gasket structure at the bottom of the conventional test cavity is cancelled, the gap between the bushing and the inner wall of the bottom of the test cavity is reduced, and the air guide structure of the bushing is added to reduce the internal void volume and improve the test accuracy.

[0021] In the utility model: through the coordinated use of the locking mechanism, the problem that when the current laboratory adopts the vacuum pressure decay method to detect the sealing of medical packaging, the closed container used in the test is not convenient for replacing the sample and the thread of the closed container is easily damaged is overcome. The utility model provides a fast clamping sealing test chamber, which is convenient for testers to quickly replace the sample and improve work efficiency. At the same time, the gasket structure of the bottom of the conventional test chamber is cancelled, the gap between the bushing and the inner wall of the bottom of the test chamber is reduced, and an air guide structure of the bushing is added to reduce the internal void volume and improve the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a cross-sectional view of the bottom of the test chamber of the utility model;

[0024] Figure 3 It is a schematic diagram of the test cavity bottom and bushing structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the locking rod and cam handle structure of the utility model.

[0026] In the figure: 1. Test chamber bottom; 2. Test chamber cover; 3. Bushing; 4. Test specimen; 5. Sealing ring; 6. Cam handle; 7. U-shaped groove; 8. Spring; 9. Locking rod; 10. Connecting rod; 11. Locking base; 12. Pin shaft; 13. Vent groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example

[0029] Reference Figure 1-Figure 4 , a quick-clamping sealing test chamber, comprising:

[0030] The test cavity bottom 1 has mounting holes on both sides;

[0031] The test chamber cover 2 is arranged on the top of the test chamber cover 2;

[0032] A bushing 3, which is arranged in the inner cavity of the test cavity bottom 1;

[0033] Sample 4, sample 4 is arranged in the inner cavity of bushing 3;

[0034] A sealing ring 5, which is arranged on the top of the test cavity bottom 1;

[0035] The locking mechanism is located on both sides of the test chamber bottom 1 and is used to seal and lock the test chamber bottom 1 and the test chamber cover 2.

[0036] As a preferred solution of the utility model, the locking device includes: a cam handle 6, a spring 8, a locking rod 9, a connecting rod 10, a locking base 11, and a pin 12;

[0037] Both sides of the test cavity bottom 1 are fixedly connected with the locking base 11, a through hole is provided on the front side of the locking base 11, there are two pin shafts 12, both of which are rotatably connected with the inner cavities of the two locking bases 11, the bottom of the connecting rod 10 is rotatably connected with the pin shaft 12, the top of the connecting rod 10 is fixedly connected with the bottom of the locking rod 9, the top of the locking rod 9 passes through the test cavity cover 2 and is rotatably connected with the cam handle 6 through the rotating shaft, the number of the springs 8 is two, the springs 8 are fixedly sleeved on the surface of the locking rod 9, and the locking mechanism ensures the stability of the downward pressure of the test cavity cover 2 through the springs 8; the upper part of the locking rod 9 is also processed with a pin The shaft 12 is installed with a hole, and the locking rod 9 is connected to the cam handle 6 through a pin shaft 12; the locking surface of the cam handle 6 is a cam structure, and the cam handle 6 can rotate freely up and down through the pin shaft 12. The locking surface of the cam handle 6 is designed as a special curved surface to ensure that the cam handle 6 can press the test chamber cover 2 to the tightest when it is pressed to the lowest; a bushing 3 is also installed inside the test chamber bottom 1, and a conventional ventilation structure is to install a gasket at the bottom of the bushing 3 to increase the gap between the bushing 3 and the inner wall of the test chamber bottom 1 to ensure that the gas can bypass these gaps to enter the interior of the bushing 3, and the gap volume between the bushing 3 and the test chamber bottom 1 is relatively large, which affects the test accuracy.

[0038] As a preferred solution of the utility model, U-shaped grooves 7 are provided on both sides of the test chamber cover 2, and ventilation grooves 13 are provided on both sides and the bottom of the bushing 3. The U-shaped grooves 7 can be provided to facilitate the locking rod 9 to seal the test chamber cover 2, and the ventilation grooves 13 are provided on the bushing 3 to ensure that the gas can freely pass through the ventilation grooves 13 into the interior of the bushing 3, thereby reducing the gap volume inside the test chamber and improving the test accuracy.

[0039] As a preferred solution of the utility model, the locking base 11 is fixedly connected to the test cavity bottom 1 by screws, and the bolts are used in conjunction with the mounting holes. The locking base 11 is conveniently fixedly installed by the mounting hole bolts.

[0040] As a preferred solution of the utility model, the top of the connecting rod 10 is provided with an internal thread, and the bottom of the locking rod 9 is provided with an external thread. The internal thread and the external thread are used in combination. The connection between the connecting rod 10 and the locking rod 9 can be easily installed and connected.

[0041] As a preferred solution of the utility model, a mounting hole is opened on the front side of the cam handle 6, and the cam handle 6 is rotatably connected to the inner cavity of the locking rod 9 through a rotating shaft. A mounting space is opened through the cam handle 6 to facilitate rotational connection with the rotating shaft.

[0042] By means of the above structure: through the use of the locking mechanism, the problem that when the current laboratory adopts the vacuum pressure decay method to detect the sealing of medical packaging, the closed container used in the test is not convenient to replace the sample 4, and the thread of the closed container is easily damaged is overcome. The utility model provides a quick-clamping sealing test chamber, which is convenient for the tester to quickly replace the sample 4 and improve work efficiency. At the same time, the gasket structure of the bottom 1 of the conventional test chamber is cancelled, the gap between the bushing 3 and the inner wall of the bottom 1 of the test chamber is reduced, and the air guide structure of the bushing 3 is added, which reduces the internal void volume and improves the test accuracy.

[0043] It should be noted that the specific type of motor to be used is selected by the relevant technical personnel familiar with the field, and the above motors are all existing technologies and will not be elaborated in this solution.

[0044] The working principle of the utility model is as follows: after placing the sample 4 in the bushing 3, the tester places the test chamber cover 2 flat on the sealing ring 5 on the test chamber bottom 1, and then rotates the cam handle 6 to a horizontal position, pushes the cam handle 6 locking rod 9 connecting rod 10 as a whole into the U-shaped groove 7, and then rotates the cam handle 6 to a nearly vertical position. At this time, the test chamber cover 2 and the test chamber bottom 1 can be tightly fitted together to ensure that there is no leakage in the test chamber during the test. After the test is completed, the tester rotates the cam handle 6 to a horizontal position, pushes the cam handle 6 locking rod 9 connecting rod 10 as a whole away from the U-shaped groove 7, and then removes the test chamber cover 2, takes out the sample 4 in the test chamber bottom 1, and then replaces the new sample 4, and repeats the previous operation process to test.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quick-clamping sealing test chamber, characterized in that: include: A test cavity bottom (1), wherein mounting holes are provided on two sides of the test cavity bottom (1); A test chamber cover (2), wherein the test chamber cover (2) is arranged on the top of the test chamber cover (2); A bushing (3), wherein the bushing (3) is arranged in the inner cavity of the test cavity bottom (1); A sample (4), wherein the sample (4) is arranged in the inner cavity of the bushing (3); A sealing ring (5), wherein the sealing ring (5) is arranged on the top of the test cavity bottom (1); A locking mechanism is located on both sides of the test chamber bottom (1), and is used to seal and lock the test chamber bottom (1) and the test chamber cover (2).

2. A quick-clamping sealing test chamber according to claim 1, characterized in that: The locking mechanism comprises: a cam handle (6), a spring (8), a locking rod (9), a connecting rod (10), a locking base (11) and a pin (12); Both sides of the test chamber bottom (1) are fixedly connected to the locking base (11), a through hole is opened on the front side of the locking base (11), there are two pin shafts (12), the two pin shafts (12) are rotatably connected to the inner cavities of the two locking bases (11), the bottom of the connecting rod (10) is rotatably connected to the pin shaft (12), the top of the connecting rod (10) is fixedly connected to the bottom of the locking rod (9), the top of the locking rod (9) passes through the test chamber cover (2) and is rotatably connected to the cam handle (6) through a rotating shaft, there are two springs (8), and the springs (8) are fixedly sleeved on the surface of the locking rod (9).

3. A quick-clamping sealing test chamber according to claim 1, characterized in that: U-shaped grooves (7) are formed on both sides of the test chamber cover (2), and ventilation grooves (13) are formed on both sides and the bottom of the bushing (3).

4. The quick-clamping sealing test chamber according to claim 1, characterized in that: The locking base (11) is fixedly connected to the test cavity bottom (1) by means of screws, and the bolts are used in conjunction with the mounting holes.

5. The quick-clamping sealing test chamber according to claim 2, characterized in that: The top of the connecting rod (10) is provided with an internal thread, and the bottom of the locking rod (9) is provided with an external thread, and the internal thread and the external thread are used in coordination.

6. The quick-clamping sealing test chamber according to claim 2, characterized in that: A mounting hole is formed on the front side of the cam handle (6), and the cam handle (6) is rotatably connected to the inner cavity of the locking rod (9) via a rotating shaft.

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