Efficient water seal testing device and testing method

Abstract

The invention provides an efficient water seal testing device and a testing method. The water seal testing device comprises a sealing box body, a lifting mechanism and an upper cover, the sealing box body comprises a main box body, a bottom plate, a water tank partition plate, a maintenance plate, a cover plate cylinder, a spring hasp lock, a sealing ring and a hinge; the upper cover is hinged with the sealing box body through a hinge; a spring hasp lock is arranged on the outer side of the sealed box body and is locked with the upper cover to form a sealed test cavity; the lifting mechanism comprises a Z-shaped supporting plate, a sliding rail, a sliding block, a lifting air cylinder, a connecting piece and a supporting plate support. One end of the Z-shaped supporting plate is fixed on the supporting plate bracket, and the other end bypasses the water tank partition plate, extends into the water tank and ascends and descends along with the operation of the lifting cylinder; the testing method comprises the following steps of: arranging a PLC (Programmable Logic Controller) behind the sealing box body, and controlling cyclic operation: placing a workpiece (opening the upper cover), descending the supporting plate, falling the upper cover, vacuumizing and leak hunting, lifting the supporting plate, feeding air and taking the workpiece. The device is simple and reliable to operate, supports a test piece in a negative pressure state in a test process, avoids water inlet loss, and is simple and efficient.

Description

Technical Field

[0001] The present invention relates to the field of water seal testing, and particularly to an efficient water seal testing device and testing method. Background Art

[0002] Most of the existing airtightness detections of sealing structures are carried out manually. Generally, the test object is placed in a water tank, and whether there are bubbles generated at the joint position is observed. However, when the test object is relatively small, this method is prone to errors, and it is difficult for the staff to find small bubbles.

[0003] After improvement, the water tank is arranged in a sealed test cavity. By pumping the sealed test cavity to negative pressure, obvious bubbles will emerge even for minute leaks. However, during the process of opening the sealed test cavity and returning to normal pressure to take out the test object, water will flow back into the test object, making maintenance difficult and even causing damage to the test object, affecting the product qualification rate, and improvement is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an efficient water seal testing device and testing method to solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] 1. An efficient water seal testing device and testing method, the water seal testing device includes: a sealed box body, a lifting mechanism and an upper cover; the sealed box body includes a main box body, a bottom plate, a water tank partition board, a maintenance board, a cover cylinder, a spring buckle lock, a sealing ring, a hinge; the upper cover is hinged to the sealed box body through the hinge; a spring buckle lock is arranged on the outside of the sealed box body to lock the upper cover into a sealed test cavity; the lifting mechanism includes a Z-shaped support plate, a slide rail, a slider, a lifting cylinder, a connecting piece, a support plate bracket; one end of the Z-shaped support plate is fixed on the support plate bracket, and the other end bypasses the water tank partition board and extends into the water tank, and rises and falls with the operation of the lifting cylinder.

[0007] 2. Further description of the present invention, the water tank partition board is fixed on the bottom plate to divide the main box body into two parts: a water tank and a lifting mechanism installation chamber, separating the wet and dry areas.

[0008] 3. Further description of the present invention, the slide rail is vertically fixed on one side of the water tank partition board close to the lifting mechanism installation chamber, the slider is nested on the slide rail and fixed to the support plate bracket; the bottom of the lifting cylinder is fixed on the bottom plate, and the top is fixed to the support plate bracket through the connecting piece.

[0009] 4. Further description of the present invention, the maintenance board of the sealed box body is in a detachable connection mode, which is convenient for the maintenance of the lifting mechanism.

[0010] 5. Further description of the present invention, the upper cover includes a cover plate, a buckle, a cylinder connection block, and a hinge fixing block; the cover plate is made of a transparent material for easy observation.

[0011] 6. Further description of the present invention, the test method (the cylinder is controlled by a PLC controller to run the following process):

[0012] 1) Place the part (open the upper cover), and place the test body on the Z-shaped support plate.

[0013] 2) Lower the Z-shaped support plate to submerge the test body below the water surface.

[0014] 3) Lower the upper cover, close the upper cover with the sealed box body, and lock it into a sealed test cavity.

[0015] 4) Start the vacuum pumping mode. When the set negative pressure is reached in the sealed test cavity, if the test body is in a non-sealed state, the internal gas will emerge from the water surface in the form of bubbles, and the leakage position can be locked through observation.

[0016] 5) Start the lifting cylinder of the lifting mechanism to drive the Z-shaped support plate and the test body out of the water surface (set a delay for draining water).

[0017] 6) Introduce air to let air enter the sealed test cavity to restore normal air pressure.

[0018] 7) Open the upper cover and take out the test body.

[0019] The beneficial effects of the present invention are as follows:

[0020] By setting a pneumatic lifting mechanism in the sealed box body and connecting an external PLC controller to control the cyclic operation: placing the part - lowering the support plate - lowering the upper cover - vacuum pumping for leak detection - lifting the support plate - introducing air - opening the upper cover to take out the part, in this test method, the support plate is lifted under negative pressure, the test part first leaves the water surface, and after maintaining an appropriate extended time, air is introduced into the sealed box body, avoiding water ingress into the leaking test part, which may lead to inoperability or even scrapping, and greatly improving the qualification rate. The operation is simple and efficient. Description of the Drawings

[0021] Figure 1 is the overall structure diagram of the present invention

[0022] Figure 2 is the structure diagram of the sealed box body of the present invention

[0023] Figure 3 is the structure diagram of the lifting mechanism of the present invention

[0024] Figure 4 is the structure diagram of the upper cover of the present invention

[0025] As shown in the drawings:

[0026] 1 - Sealed box, including: 11 - Main box body, 12 - Bottom plate, 13 - Water tank partition board, 14 - Maintenance plate, 15 - Cover plate cylinder, 16 - Spring buckle lock, 17 - Sealing ring, 18 - Hinge;

[0027] 2 - Lifting mechanism, including: 21 - Z-shaped support plate, 22 - Slide rail, 23 - Slide block, 24 - Lifting cylinder, 25 - Connecting piece, 26 - Support plate bracket;

[0028] 3 - Upper cover, including: 31 - Cover plate, 32 - Buckle, 33 - Cylinder connecting block, 34 - Hinge fixing block. Specific implementation mode

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] As Figures 1-4 shown, an efficient water sealing test device and test method, characterized in that: the water sealing test device includes: a sealed box 1, a lifting mechanism 2 and an upper cover 3; the sealed box 1 includes a main box body 11, a bottom plate 12, a water tank partition board 13, a maintenance plate 14, a cover plate cylinder 15, a spring buckle lock 16, a sealing ring 17, a hinge 18; the upper cover 3 is hinged to the sealed box 1 through the hinge 18; a spring buckle lock 16 is arranged on the outside of the sealed box 1 and locked with the upper cover 3 to form a sealed test cavity; the lifting mechanism 2 includes a Z-shaped support plate 21, a slide rail 22, a slide block 23, a lifting cylinder 24, a connecting piece 25, a support plate bracket 26; one end of the Z-shaped support plate 21 is fixed on the support plate bracket 26, and one end bypasses the water tank partition board 13 and extends into the water tank, and rises and falls with the operation of the lifting cylinder 24.

[0031] The water tank partition board 13 is fixed on the bottom plate 12 to divide the main box body 11 into two parts: a water tank and a lifting mechanism installation chamber.

[0032] The slide rail 22 is vertically fixed on one side of the water tank partition board 13 close to the lifting mechanism installation chamber, the slide block 23 is nested on the slide rail 22 and fixed to the support plate bracket 26; the bottom of the lifting cylinder 24 is fixed on the bottom plate 12, and the top is fixed to the support plate bracket 26 through the connecting piece 25.

[0033] The maintenance plate 14 of the sealed box 1 is in a detachable connection mode, which is convenient for the maintenance of the lifting mechanism.

[0034] The upper cover 3 includes a cover plate 31, a buckle 32, a cylinder connecting block 33, a hinge fixing block 34; the cover plate 31 is made of a transparent material for easy observation.

[0035] The test method (the following process is controlled by a PLC controller to control the cylinder operation):

[0036] 1) Placing the part (the upper cover is opened), placing the test body on the Z-shaped support plate 21;

[0037] 2) The Z-shaped support plate 21 is lowered to sink the test body below the water surface;

[0038] 3) The upper cover 3 falls down, and the upper cover 3 and the sealed box body 1 are closed and locked to form a sealed test cavity;

[0039] 4) Start the vacuum mode and seal the test chamber to the set negative pressure. If the test chamber is not sealed, the internal gas will bubble up to the surface of the water in the form of bubbles. The leak location can be identified by observation.

[0040] 5) Start the lifting cylinder 24 of the lifting mechanism 2 to drive the Z-shaped support plate 31 and the test object out of the water (set the delay draining time);

[0041] 6) Air intake: allow air into the sealed test chamber to restore normal air pressure;

[0042] 7) Open the top cover and take out the test piece.

[0043] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An efficient water seal testing device and testing method, characterized in that: The water sealing test device includes: a sealing box body, a lifting mechanism and an upper cover; the sealing box body includes a main box body, a bottom plate, a water tank partition, an inspection plate, a cover cylinder, a spring buckle lock, a sealing ring, and a hinge; the upper cover is hinged to the sealing box body through a hinge; a spring buckle lock is set on the outside of the sealing box body and locked with the upper cover to form a sealing test cavity; the lifting mechanism includes a Z-shaped support plate, a slide rail, a slider, a lifting cylinder, a connecting plate, and a support plate bracket; one end of the Z-shaped support plate is fixed on the support plate bracket, and the other end bypasses the water tank partition and extends to the water tank, rising and falling with the operation of the lifting cylinder.

2. The efficient water sealing test device and test method according to claim 1, characterized in that: The water tank partition is fixed on the bottom plate to divide the main box into two parts: a water tank and a lifting mechanism installation chamber.

3. An efficient water sealing test device and test method according to claim 1, characterized in that: The slide rail is vertically fixed on the side of the water tank partition close to the lifting mechanism installation chamber, the slider is nested on the slide rail and fixed to the support bracket; the bottom of the lifting cylinder is fixed to the base plate, and the top is fixed to the support bracket through a connecting piece.

4. An efficient water sealing test device and test method according to claim 1, characterized in that: The inspection plate of the sealing box body is detachably connected, which is convenient for inspection and maintenance of the lifting mechanism.

5. An efficient water sealing test device and test method according to claim 1, characterized in that: The upper cover includes a cover plate, a buckle, a cylinder connecting block, and a hinge fixing block; the cover plate is made of a transparent material for easy observation.

6. An efficient water seal testing device and testing method according to claim 1, characterized in that: The test method (the PLC controller controls the cylinder to run the following process): 1) Place the test piece (open the top cover) on the Z-shaped support plate; 2) The support plate is lowered to sink the test body below the water surface; 3) The upper cover falls down, and the upper cover and the sealed box body are closed and locked to form a sealed test cavity; 4) Start the vacuum mode and seal the test chamber to the set negative pressure. If the test chamber is not sealed, the internal gas will bubble up to the surface of the water in the form of bubbles. The leak location can be identified by observation. 5) The support plate is lifted, and the lifting cylinder of the lifting mechanism is activated to drive the Z-shaped support plate and the test body out of the water (set the delay draining); 6) Air intake: allow air into the sealed test chamber to restore normal air pressure; 7) Open the top cover and take out the test piece.

Images