High-reliability airtightness detection device

Abstract

The utility model belongs to the technical field of air leakage testers, and provides a high-reliability air tightness detection device, which is based on an air tightness detector main body, an air source filtering device is arranged at an air inlet interface of the air tightness detector main body, an air outlet joint end of the air source filtering device is connected with the air inlet interface, an air inlet joint end is connected with an air source pipeline, and the air source pipeline is connected with the air tightness detector main body. Compressed air is treated through the air source filtering device, firstly, the compressed air rotates in an airflow channel of the air source filtering device, the speed of air is high, the speed of impurities such as water and oil in an air source is low, and therefore the impurities such as the water and the oil in the air source are subjected to primary separation treatment, and the separated water and oil impurities are discharged to the dirt bearing device; according to the air source filtering device, the air source is filtered through the filter element part and then is discharged to the air outlet connector end, impurities in the treated air source are more thoroughly removed, the reliability of air tightness detection is improved, the influence of the impurities on the filter element part is reduced, and the maintenance requirement of the air source filtering device is lowered.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air leakage tester technical field, specifically, relate to a high reliable air tightness detection device. BACKGROUND

[0002] Air leakage tester based on the principle of differential pressure is used for detecting the air leakage of sealed container or system, judges whether there is leakage by measuring pressure difference, and its working principle is as follows: tester fills the measured object with compressed air, makes it reach predetermined pressure, then closes the inflation channel, monitors internal pressure change, if there is leakage, pressure will drop, measures pressure difference by high-precision differential pressure sensor, judges leakage amount.The working of air leakage tester needs to use compressed air source, however, the air source can contain moisture, oil and other impurities, if using the impure air source to carry out air tightness detection, it is easy to influence the accuracy of air tightness detection, reduces the reliability of air tightness detection. UTILITY MODEL CONTENTS

[0003] The utility model discloses a high reliable air tightness detection device to solve the problems in prior art.

[0004] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0005] A kind of high reliable air tightness detection device, including air tightness detector main body, the end surface of air tightness detector main body is provided with power interface, exhaust port, test interface and air inlet, air source filter device is arranged at air inlet, the air source filter device includes connector, the gas outlet connector end of being arranged in one end of the connector and being connected with the air inlet, the gas inlet connector end of being arranged in the other end of the connector, the shell of being arranged in the lower end of the connector and being communicated with it, the support rod of being arranged in one side of the shell and being used to abut the end surface of air tightness detector main body, filter core part arranged in the shell, air flow passage between the inner wall of the shell and the filter core part, and blowdown connector is arranged in the lower end of the shell, and the pollution bearing device is installed at the blowdown connector.

[0006] Further, the connector is provided with an exhaust elbow communicated with the gas outlet connector end at one end;The lower end of the filter core part is gas inlet end, and the upper end is gas outlet end, and the other end of the exhaust elbow is communicated with the gas outlet end of the filter core part.

[0007] Further, the end surface of air tightness detector main body is provided with the jack for cooperating with the support rod.

[0008] Further, the pollution bearing device includes protective shell connected with the blowdown connector at the upper end, and the pollution bearing container arranged in the protective shell.

[0009] Further, the pollution-accepting container is made of transparent material, and an observation window is arranged on the protective shell.

[0010] Further, a pollution discharge pipe with a valve is arranged at the bottom of the pollution-accepting container.

[0011] Further, the support rod is in an integral structure with the shell and is located at the middle lower part of the shell.

[0012] Further, the bottom end surface of the shell is arranged in a downward inclined manner.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses a gas tightness detector main part is provided with gas source filter device at its air inlet, and the air outlet connector end of gas source filter device is connected air inlet, and the air inlet connector end is connected gas source pipeline, and compressed air is handled through gas source filter device, and compressed air rotates first in the airflow channel of gas source filter device, and the speed of gas is fast, and the speed of water, oil and other impurities in gas source is slow, and thus water, oil and other impurities in gas source are handled after preliminary separation, and the separated water and oil impurities are discharged to the pollution-accepting device, and then the gas source is filtered after filter core part and is discharged to the air outlet connector end, and the gas source after processing removes the impurities in the gas source more completely, improves the reliability of gas tightness detection, reduces the influence of impurities on filter core part and reduces the maintenance demand of gas source filter device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model.

[0016] Figure 2 It is the end surface schematic diagram of the utility model.

[0017] Figure 3 It is the structural schematic diagram of gas source filter device in the utility model.

[0018] Figure 4 It is the internal schematic diagram of gas source filter device in the utility model.

[0019] Figure 5 It is the structural schematic diagram of pollution-accepting device in the utility model.

[0020] The corresponding labels in the attached diagram are as follows: 1-Air tightness tester body, 2-Power interface, 3-Exhaust port, 4-Test interface, 5-Inlet interface, 6-Connector, 7-Outlet connector, 8-Inlet connector, 9-Shell, 10-Support rod, 11-Filter element, 12-Airflow channel, 13-Drain connector, 14-Exhaust bend, 15-Insertion hole, 16-Protective shell, 17-Dirty container, 18-Dirty pipe, 19-Hollow connector. Detailed Implementation

[0021] To enable those skilled in the art to have a clearer understanding of this utility model, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model and facilitate understanding. The technical solutions provided by this utility model are not limited to those provided in the following embodiments, nor should they limit the scope of protection of this utility model.

[0022] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar expressions used in this application, mean that the element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Positional relation terms such as "upper," "lower," "left," "right," "front," and "rear" are determined based on the layout orientation of the accompanying drawings and are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Example

[0024] like Figures 1-5 As shown, this embodiment provides a highly reliable airtightness testing device, which includes an airtightness testing instrument body. The end face of the airtightness testing instrument body is provided with a power interface, an exhaust port, a test interface, and an air inlet interface. The power interface is used to connect to an external power cord, the exhaust port is used for exhausting the instrument, the test interface is used to connect to the product under test, and the air inlet interface is used to connect to an air source. At the same time, an RS232 serial communication interface can also be provided to facilitate the connection between the instrument and the factory information system, and to facilitate the real-time recording and export of relevant test information. The airtightness testing instrument body can be an existing mature product, so it will not be described in detail here.

[0025] The air source filtering device is provided with a joint part, an air outlet joint end arranged at one end of the joint part and connected with the air inlet interface, an air inlet joint end arranged at the other end of the joint part, and a hollow interior of the joint part, the two ends of which are communicated with the air outlet joint end and the air inlet joint end respectively, and the lower end is an open structure, wherein the air inlet joint end is connected with the external air source pipeline, and the two can be connected by bolts, and the air outlet joint end is connected with the air inlet interface, and the two can be connected by bolts; the lower end of the joint part is provided with a shell communicated therewith, and the joint part and the shell can be designed in an integrated structure, the shell adopts a cylindrical structure, is hollow inside, and is provided with a filter core part inside, the upper end of the filter core part is an air outlet end, the lower end is an air inlet end, and a gap is formed between the filter core part and the inner wall of the shell, thereby forming an air flow channel.

[0026] In the embodiment, the air source filtering device adopts a two-stage filtering design, the joint part is provided with an exhaust elbow communicated with the air outlet joint end at one end, and the other end of the exhaust elbow is communicated with the air outlet end of the filter core part, which, in combination with the structural design of the filter core part and the air flow channel, realizes the separation and filtering of the air source, and the implementation principle is as follows: compressed air enters into the joint part through the air inlet joint end, and then the flow direction of the compressed air changes to rotate downward, the compressed air rotates downward at the air flow channel, in this process, water, oil and other impurities in the air source are separated out and flow to the bottom of the shell along the inner wall of the shell and the outer wall of the filter core part, the gas enters into the inside of the filter core part through the air inlet end at the lower end of the filter core part, is filtered by the filter core, then enters into the exhaust elbow through the air outlet end at the upper end of the filter core part, and finally enters into the air inlet interface of the instrument through the exhaust elbow and the air outlet joint end.

[0027] In the embodiment, the air source filtering device has a certain length as a whole, and the connection point between the air source filtering device and the instrument is only the air outlet joint end at the upper end of the air source filtering device, since the air source filtering device is installed protruding from the end face of the instrument, the air source filtering device is easy to be touched, and since other parts of the air source filtering device are not supported, touching the air source filtering device can easily damage the connection between the air outlet joint end and the air inlet interface, and damage the equipment, therefore, the middle and lower parts of one side of the shell are provided with a support rod integrated with the shell, and the end face of the main body of the air tightness detector is provided with a jack hole matched with the support rod, after the air source filtering device is installed, the end part of the support rod is inserted into the jack hole, and the support rod can better support and limit the middle and lower parts of the air source filtering device, so as to avoid damaging the connection between the air outlet joint end and the air inlet interface.

[0028] The separated water and oil impurities need to be discharged to the outside, and the shell is provided with a pollution discharge joint at the lower end, and a pollution bearing device is installed through the pollution discharge joint. The connection mode of the two can adopt a conventional connection mode such as threaded connection, and the connection part should be sealed. Considering that the water and oil impurities can flow smoothly to the pollution discharge joint, the bottom end surface of the shell is provided in a downward inclined manner. Specifically, the bottom end surface of the shell is inclined towards the pollution discharge joint.

[0029] In the embodiment, the pollution bearing device includes a protective shell connected to the pollution discharge joint at the upper end, and a pollution bearing container arranged in the protective shell. The upper end of the protective shell adopts a hollow joint, which is in communication with the pollution discharge joint and can adopt a conventional connection mode such as threaded connection or plug-in connection. The pollution bearing container is matched with the inner cavity of the protective shell in shape, and the upper end thereof is in communication with the hollow joint. The water and oil impurities flow into the pollution bearing container through the pollution discharge joint and the hollow joint. In a further preferred embodiment, the pollution bearing container is made of transparent material, and an observation window is arranged on the protective shell to facilitate observation of the impurities in the pollution bearing container. The pollution bearing device adopts a detachable design, so that the pollution bearing container can be used for a period of time and then removed to treat the impurities in the container. After treatment, it can be installed again, or a pollution discharge pipe with a valve is arranged at the bottom of the pollution bearing container, so that idle discharge can be achieved in the non-working state of the equipment.

[0030] The above is the preferred embodiment of the present application. It should be noted that those skilled in the art can make some improvements without departing from the design principles and technical solutions of the present application, and these improvements should also be considered within the protection scope of the present application.

Claims

1. A high-reliability air tightness detection device, comprising an air tightness detector main body (1), the end face of the air tightness detector main body (1) is provided with a power supply interface (2), an exhaust port (3), a test interface (4) and an air inlet interface (5), characterized in that, The air source filtering device is arranged at the air inlet interface (5), and comprises a joint part (6), an air outlet joint end (7) arranged at one end of the joint part (6) and connected with the air inlet interface (5), an air inlet joint end (8) arranged at the other end of the joint part (6), an outer shell (9) arranged at the lower end of the joint part (6) and communicated with the joint part (6), a supporting rod (10) arranged at one side of the outer shell (9) and used for abutting against the end face of the air tightness detector main body (1), a filter core part (11) arranged in the outer shell (9), an air flow channel (12) arranged between the inner wall of the outer shell (9) and the filter core part (11), and a sewage outlet joint (13) arranged at the lower end of the outer shell (9), wherein a sewage bearing device is arranged at the sewage outlet joint (13).

2. The high-reliability air-tightness detection device according to claim 1, characterized by: An exhaust elbow (14) is arranged in the joint part (6) and communicated with the air outlet joint end (7); the lower end of the filter core part (11) is an air inlet end, the upper end is an air outlet end, and the other end of the exhaust elbow (14) is communicated with the air outlet end of the filter core part (11).

3. The high-reliability air-tightness detection device according to claim 2, characterized by: A jack (15) used in cooperation with the supporting rod (10) is arranged on the end face of the air tightness detector main body (1).

4. The high-reliability air-tightness detection device according to claim 3, characterized by: The sewage bearing device comprises a protective shell (16) connected with the sewage outlet joint (13) and a sewage bearing container (17) arranged in the protective shell (16).

5. The high-reliability air-tightness detection device according to claim 4, characterized by: The sewage bearing container (17) is made of transparent material, and an observation window is arranged on the protective shell (16).

6. The high-reliability air-tightness detection device according to claim 5, characterized by: A sewage discharge pipe (18) with a valve is further arranged at the bottom of the sewage bearing container (17).

7. The high-reliability air-tightness detection device according to claim 6, characterized by: The supporting rod (10) is in an integral structure with the outer shell (9) and located at the middle and lower part of the outer shell (9).

8. The high-reliability air-tightness detection device according to claim 7, characterized by: The bottom end face of the outer shell (9) is arranged in a downward inclined manner.

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