CN102147316A

CN102147316A - Tightness tester

Info

Publication number: CN102147316A
Application number: CN 201110035894
Authority: CN
Inventors: 邱靖涛
Original assignee: PINGHU MEIJIA THERMAL INSULATION CONTAINER INDUSTRY Co Ltd
Current assignee: PINGHU MEIJIA THERMAL INSULATION CONTAINER INDUSTRY Co Ltd
Priority date: 2011-01-29
Filing date: 2011-01-29
Publication date: 2011-08-10

Abstract

The invention discloses a tightness tester. An air source is connected to a first solenoid valve, the output of the first solenoid valve is divided into two paths, one path is connected with a container to be tested after passing through the second solenoid valve, the other path is connected with a standard test container after passing through a third solenoid valve, one path of gas output by the second solenoid valve is connected with a comparator, one path of gas output by the third solenoid valve is connected with the comparator, the first solenoid valve, the second solenoid valve, the third solenoid valve and the comparator are all connected with a central processing unit, and the central processing unit is further electrically connected with a display. The tightness tester disclosed by the invention has the advantages that the container to be tested and the standard test container can be automatically compared to determine whether a pressure difference exists, if the pressure difference exceeds a set value, the system carries out automatic alarm display, and thus, the process of manually and repeatedly checking a pressure gage is omitted; and the test can be completed only by connecting an air pipe with the container to be tested and pressing an aerating switch; and the tightness tester is simple and convenient to operate and is beneficial to reduction of labor intensity of workers and great increase of production efficiency.

Description

Airtight tester

Technical field

The present invention relates to airtight tester.

Background technology

For some the product of seal request is arranged, such as heat-preserving container, whether all need to detect it before dispatching from the factory seals, method commonly used is directly to charge into the atmospheric gas of overgauge to its inside, detects the gaseous tension that charges into by tensimeter then, judges whether this product leaks gas, such testing process is obviously long, and need operation element to check tensimeter repeatedly, waste time and energy inefficiency.

Summary of the invention

The object of the present invention is to provide airtight tester, can effectively solve at present product surveillance that seal request is arranged when whether it leaks gas, need return factory and check tensimeter, inefficiency and the problem that wastes time and energy.

In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: airtight tester, source of the gas is connected to first solenoid valve, be divided into two-way after the output of first solenoid valve, one the tunnel through being connected with container to be detected behind second solenoid valve, another road is connected with the standard detection container after through the 3rd solenoid valve, the gas of second solenoid valve output also divides has one the tunnel to be connected with comparer, the gas of the 3rd solenoid valve output also divides has one the tunnel to be connected with comparer, described first solenoid valve, second solenoid valve, the 3rd solenoid valve, comparer all is electrically connected with CPU (central processing unit), and described CPU (central processing unit) also is electrically connected with display.

Preferably, be connected with first pressure tester on the output terminal of described first solenoid valve, described first pressure tester is electrically connected with CPU (central processing unit)

Preferably, also be connected with a path between the input end of the input end of described second solenoid valve and the 3rd solenoid valve, described path is provided with second pressure tester, and described second pressure tester is electrically connected with CPU (central processing unit)

Compared with prior art, advantage of the present invention is: charge into gases at high pressure to standard monitoring container and container to be detected simultaneously, automatically relatively whether both have pressure differential then, if pressure differential surpasses setting value, the then automatic alarm indication of system, remove the workman like this from and checked manometric process repeatedly, only tracheae need be linked to each other with container to be detected, press gas-filled switching tube and get final product, simple to operation, reduced working strength of workers, production efficiency is improved greatly.

Description of drawings

Fig. 1 is the gas circuit synoptic diagram of the airtight tester of the present invention;

Fig. 2 is the circuit structure block diagram of the airtight tester of the present invention.

Embodiment

Consult Fig. 1, Fig. 2 is the embodiment of the airtight tester of the present invention, airtight tester, source of the gas is connected to first solenoid valve 1, be divided into two-way after 1 output of first solenoid valve, one the tunnel through being connected with container 3 to be detected behind second solenoid valve 2, another road is connected with standard detection container 5 through the 3rd solenoid valve 4 backs, the gas of second solenoid valve 2 output also divides has one the tunnel to be connected with comparer 6, the gas of the 3rd solenoid valve 4 output also divides has one the tunnel to be connected with comparer 6, described first solenoid valve 1, second solenoid valve 2, the 3rd solenoid valve 4, comparer 6 all is electrically connected with CPU (central processing unit) 7, described CPU (central processing unit) 7 also is electrically connected with display 8, be connected with first pressure tester 9 on the output terminal of described first solenoid valve 1, described first pressure tester 9 is electrically connected with CPU (central processing unit) 7, also be connected with a path between the input end of the input end of described second solenoid valve 2 and the 3rd solenoid valve 4, described path is provided with second pressure tester 10, and described second pressure tester 10 is electrically connected with CPU (central processing unit) 7.

CPU (central processing unit) 7 controls first solenoid valve 1 is opened, adjust filling air pressure according to first pressure tester 9, open second solenoid valve 2 and the 3rd solenoid valve 4 then, beginning is to container 3 to be detected and 5 inflations of standard detection container, after finishing, inflation closes first solenoid valve 1, second solenoid valve 2 and the 3rd solenoid valve 4 stay open state, get off Deng second pressure tester, 10 numerical stabilities, close second solenoid valve 2 and the 3rd solenoid valve 4 again, air pressure by comparer 6 contrast both sides, if air pressure numerical value is less than setting value then test product is qualified, if greater than setting value then test product is defective.As long as when operating personnel connect with container 3 to be detected after press the unlatching switch, electric elements will move under the control of CPU (central processing unit) 7 automatically, whether qualified grade will show on display 8 operation result such as product, perhaps on CPU (central processing unit) 7, connect acousto-optic equipment, inform operating personnel as the defective mode of fruit product by acousto-optic.

The above only is specific embodiments of the invention, but technical characterictic of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.

Claims

1. airtight tester, it is characterized in that: source of the gas is connected to first solenoid valve (1), be divided into two-way after first solenoid valve (1) output, one the tunnel is connected with container to be detected (3) through second solenoid valve (2) back, another road is connected with standard detection container (5) through the 3rd solenoid valve (4) back, the gas of second solenoid valve (2) output also divides has one the tunnel to be connected with comparer (6), the gas of the 3rd solenoid valve (4) output also divides has one the tunnel to be connected with comparer (6), described first solenoid valve (1), second solenoid valve (2), the 3rd solenoid valve (4), comparer (6) all is electrically connected with CPU (central processing unit) (7), and described CPU (central processing unit) (7) also is electrically connected with display (8).

2. airtight tester as claimed in claim 1 is characterized in that: be connected with first pressure tester (9) on the output terminal of described first solenoid valve (1), described first pressure tester (9) is electrically connected with CPU (central processing unit) (7).

3. airtight tester as claimed in claim 1, it is characterized in that: also be connected with a path between the input end of the input end of described second solenoid valve (2) and the 3rd solenoid valve (4), described path is provided with second pressure tester (10), and described second pressure tester (10) is electrically connected with CPU (central processing unit) (7).