CN219200760U - Integrated form gas tightness detection device with it is multi-functional - Google Patents

Abstract

The utility model discloses a multifunctional integrated air tightness detection device, which comprises a shell, wherein the front part of the shell is hinged with a front door, a containing cavity for containing a product to be tested is detachably connected in the shell, an opening of the containing cavity faces one side of the front door and is in sealing connection with the front door, an executing mechanism which is communicated with the containing cavity and charges or discharges air into the containing cavity is arranged in the shell, and positive/negative pressure test is carried out on the product to be tested which is placed in the containing cavity according to requirements; in addition, the detection device is provided with a micro printer, a loudspeaker, a touch liquid crystal touch display screen and the like. The detection device provided by the utility model not only can carry out positive and negative pressure tests on products to be detected, but also has the functions of display, voice broadcasting, test data printing and the like, and can carry out air tightness tests on products with different specifications by replacing the accommodating cavity, so that one machine is multipurpose, and the experience of users is improved.

Description

Integrated form gas tightness detection device with it is multi-functional

Technical Field

The utility model belongs to the technical field of air tightness detection, and particularly relates to a multifunctional integrated air tightness detection device.

Background

When carrying out quality in the instrument, instrument and various electronic terminal etc. products of industrial production, many times need to use gas tightness detection device in order to test the product that has strict requirements to sealing performance or waterproof grade, can effectively promote the quality of product through the gas tightness detection to the product to avoid trouble product to flow into market, cause the economy and the reputation loss that are difficult to retrieve to the manufacturing enterprise.

However, the conventional air tightness detection device mainly has the following disadvantages:

firstly, most of the existing air tightness detection devices are of split type structures, namely, a test host and a test cavity are independently designed, for example, chinese patent publication No. CN218381483U is named as an air tightness detection device, and the detection device has the defects of inconvenient package and transportation although the structure is simple;

secondly, the function of the existing air tightness detection device test product is single, or only has a positive pressure test function or only has a negative pressure test function, and when a user needs to print test data, the user needs to be provided with a printer independently, so that inconvenience in use is caused.

In view of the above, the present inventors have proposed a multifunctional integrated air tightness detection device to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the multifunctional integrated air tightness detection device which adopts an integrated design concept, integrally designs a test host and a test cavity and structurally carries out brand new design, so that the detection device has positive and negative pressure test functions, and simultaneously has the functions of liquid crystal display, voice broadcasting, test data printing and the like, is convenient for users to use, and finally improves the experience of the detection device.

The utility model aims at solving the problems by the following technical scheme:

the utility model provides an integrated form gas tightness detection device with it is multi-functional, includes the casing, the casing front portion has the qianmen through articulated shaft movable mounting, can dismantle in the casing and be connected with the holding cavity that is used for placing the product that awaits measuring, hold cavity opening towards qianmen one side just hold cavity opening and the internal surface sealing connection of qianmen, be provided with in the casing with hold cavity intercommunication and to hold cavity inside and fill or exhaust air's actuating mechanism, be used for putting into the product that awaits measuring in holding the cavity carries out positive pressure test or negative pressure test.

Further, actuating mechanism is including installing the power supply controller at holding cavity outer wall top, power supply controller's input passes through the wire and establishes power and switch electric connection on the casing side, power supply controller passes through the wire and installs the mainboard electric connection in the casing, the mainboard passes through the wire and is connected with pressure sensor, electromagnetic relay and the solenoid valve group of installing in the casing respectively, pressure sensor sets up on holding the cavity and communicates with it, electromagnetic relay passes through the wire and sets up the air pump electric connection in the casing, the air pump passes through a plurality of pipeline and solenoid valve group and holds the cavity intercommunication and forms and aerify and exhaust circuit.

Further, the electromagnetic valve groups are four sets, namely a 1# electromagnetic valve, a 2# electromagnetic valve, a 3# electromagnetic valve and a 4# electromagnetic valve; the structure of the 1# electromagnetic valve is the same as that of the 3# electromagnetic valve, threaded holes are formed in two ends of the 1# electromagnetic valve, one end of the 1# electromagnetic valve is connected with a Y-shaped connector, and the other end of the 1# electromagnetic valve is connected with an L-shaped connector; the structure of the 2# electromagnetic valve is the same as that of the 4# electromagnetic valve, both ends of the 2# electromagnetic valve are provided with threaded holes, one end of the 2# electromagnetic valve is connected with a straight plug-in type connector, and the other end of the 2# electromagnetic valve is connected with a silencer;

the pipeline comprises a trachea A, a trachea B, a trachea C, a trachea D, a trachea E and a trachea F;

the air outlet of the air pump is connected with one interface of a Y-shaped connector on the 1# electromagnetic valve through an air pipe A, the other interface of the Y-shaped connector is connected with a direct-insertion connector on the 2# electromagnetic valve through an air pipe B, and an L-shaped connector on the 1# electromagnetic valve is communicated with an air inlet of the accommodating cavity through an air pipe C;

the air inlet of the air pump is connected with one interface of a Y-shaped connector on the 3# electromagnetic valve through an air pipe D, the other interface of the Y-shaped connector is connected with a straight-inserting connector on the 4# electromagnetic valve through an air pipe E, and an L-shaped connector on the 3# electromagnetic valve is communicated with an extraction opening of the accommodating cavity through an air pipe F.

Further, a liquid crystal touch display screen, a start key, a stop key, a red alarm lamp and a green indicator lamp are respectively arranged on the front door, and the liquid crystal touch display screen, the start key, the stop key, the red alarm lamp and the green indicator lamp are respectively connected with the main board through wires and are used for controlling positive pressure test or negative pressure test of a product to be tested;

the liquid crystal touch display screen is used for setting and displaying relevant parameter data when the product to be tested is subjected to positive pressure test or negative pressure test.

Further, the detection device further comprises a micro printer, the micro printer is installed in a square hole preset on the outer side face of the shell through a printer support, the micro printer is respectively connected with the main board and the liquid crystal touch display screen, and the liquid crystal touch display screen is used for controlling the micro printer to print test related data.

Further, the detection device further comprises a loudspeaker, the loudspeaker is installed in a groove preset on the outer side face of the shell through a loudspeaker support, a filter screen is attached to the surface of the loudspeaker, and the loudspeaker is connected with the main board through a wire and used for playing a test result of a language.

Further, a cavity panel is arranged on one side of the accommodating cavity, which is positioned on the opening, a plurality of electromagnetic locks are uniformly arranged on the front surface of the cavity panel, electromagnetic lock adsorption sheets which are matched with the electromagnetic locks in number and position one by one are arranged on the inner surface of the front door, and the electromagnetic locks are connected with the main board; meanwhile, a convex sealing ring is arranged on the cavity panel and located at the position of the containing cavity opening, a sealing baffle is arranged on the inner surface of the front door, and after the electromagnetic lock and the electromagnetic lock adsorption sheet are adsorbed, the sealing baffle extrudes the sealing ring to realize the sealing of the containing cavity.

Further, a movable handle is further arranged on the front door, and the movable handle is used for closing the front door in the transportation and placement processes of the detection device.

Further, the rear door is installed at the casing rear portion, the rear door is articulated with the casing through the door axle, be provided with mechanical lock on the rear door, open the rear door through mechanical lock and be used for maintaining or changing the spare part of casing inside.

Furthermore, handles are symmetrically arranged on the left side and the right side of the shell, so that the instrument can be conveniently carried;

the bottom four corners of casing are provided with a callus on sole that has can height-adjusting respectively for detection device's leveling.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model provides a multifunctional integrated air tightness detection device which mainly comprises a shell, a front door, a containing cavity and an executing mechanism, wherein the front door is arranged on the shell; the main board of the executing mechanism controls the electromagnetic relay to further control whether the air pump works or not, and simultaneously controls the opening and closing of each electromagnetic valve in the electromagnetic valve group through the main board, so that an inflation and exhaust loop is formed by the electromagnetic valve group and a plurality of pipelines, and positive pressure test or negative pressure test is carried out according to the requirements of products to be tested arranged in the accommodating cavity; in addition, the liquid crystal touch display screen, the micro printer and the loudspeaker are arranged on the detection device, so that positive and negative pressure testing can be realized, and data display, printing, voice broadcasting and other functions can be performed during testing, and the user experience of the detection device is improved.

2. According to the multifunctional integrated air tightness detection device, when the positive and negative pressure test is carried out, the front door is connected with the accommodating cavity through the electromagnetic lock, the protruding sealing ring is arranged at the opening of the accommodating cavity, and the sealing baffle is correspondingly arranged on the inner surface of the front door, so that the sealing baffle is extruded by the generated adsorption force after the electromagnetic lock is electrified, and the sealing effect inside the accommodating cavity is achieved.

3. The utility model provides the multifunctional integrated air tightness detection device, and the accommodating cavity in the detection device is detachably connected with the shell, namely, the compatibility of different products to be detected can be realized by changing the accommodating cavity.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate principles of the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram 1 of the overall structure of the detection device of the present utility model;

FIG. 2 is a schematic diagram of the overall structure of the detection device 2;

FIG. 3 is a schematic view showing a connection structure between a receiving cavity and a front door in the detecting device of the present utility model;

FIG. 4 is a schematic diagram showing a connection structure between an actuator and a receiving cavity in the detecting device of the present utility model;

FIG. 5 is an exploded view of the connection of the two ends of the 1# or 3# solenoid valve with the Y-type connector and the L-type connector in the detection device of the present utility model;

FIG. 6 is an exploded view of the connection of two ends of the No. 2 or No. 4 solenoid valve with the "in-line" type connector and muffler in the detection device of the present utility model;

FIG. 7 is a schematic front view of a front door structure of the detecting device of the present utility model;

FIG. 8 is a cross-sectional view of the structure A-A of FIG. 7

FIG. 9 is a schematic front view of a rear door structure of the detecting device of the present utility model;

fig. 10 is a schematic diagram of two sides of a housing in the detection device of the present utility model.

Wherein: 1 is a shell; 2 is a containing cavity; 3 is an executing mechanism; 4 is a power supply and a switch; 5 is a micro printer; 6 is a loudspeaker; 7 is a filter screen; 11 is a hinge shaft; 12 is a front door; 13 is a back door; 14 is a handle; 15 is a foot pad; 21 is a cavity panel; 31 is a power supply controller; 32 is a main board; 33 is a pressure sensor; 34 is an electromagnetic relay; 35 is an electromagnetic valve group; 36 is an air pump; 37 is a pipeline; 121 is a liquid crystal touch display screen; 122 is a start button; 123 is a stop button; 124 is a red warning lamp; 125 is a green indicator light; 126 is an electromagnetic lock adsorption plate; 127 is a sealing baffle; 128 is a movable handle; 131 is a mechanical lock; 211 is an electromagnetic lock; 212 is a sealing ring; 351 is a # 1 solenoid valve; 352 is the # 2 solenoid valve; 353 is a 3# solenoid valve; 354 is the # 4 solenoid valve; 371 is trachea a;372 is trachea B;373 is tracheal C;374 is trachea D;375 is trachea E;376 is the trachea F.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of devices that are consistent with aspects of the utility model that are set forth in the following claims.

The present utility model will be described in further detail below with reference to the drawings and examples for better understanding of the technical solutions of the present utility model to those skilled in the art.

Referring to fig. 1 to 10, the integrated air tightness detection device with multiple functions provided by the utility model comprises a shell 1, wherein the shell 1 is of a square frame structure, the left side surface, the right side surface and the top surface of the frame structure are provided with outer covers, a front door 12 is movably mounted at the front part of the shell 1 through a hinge shaft 11, the front door 12 is opened for placing a product to be detected, a rear door 13 is mounted at the rear part (as shown in fig. 9), the rear door 13 is hinged with the shell 1 through an upper door shaft and a lower door shaft, a mechanical lock 131 is arranged on the rear door 13, and the rear door 13 is opened through the mechanical lock 131 for maintaining or replacing parts inside the shell 1. The inside of the shell 1 is detachably connected with a containing cavity 2 for containing a product to be tested, namely, the containing cavity 2 is of a replaceable structure, so that different specifications of products to be tested are compatible, an opening of the containing cavity 2 faces one side of the front door 12, and the opening of the containing cavity 2 is in sealing connection with the inner surface of the front door 12, an executing mechanism 3 which is communicated with the containing cavity 2 and charges or discharges air into the containing cavity 2 is arranged in the shell 1, and the executing mechanism is placed into the containing cavity 2 and is subjected to positive pressure test or negative pressure test according to the requirements of the product to be tested.

The actuating mechanism 3 of the embodiment of the utility model comprises a power controller 31, the power controller 31 is fixed at the top of the outer wall of the accommodating cavity 2 through a power mounting plate, the input end of the power controller 31 is electrically connected with a power and a switch 4 arranged on the right side surface of the housing 1 through a wire, the power and the switch 4 are the main switch of the detecting device, when the detecting device is used, 220V input power wires are connected to provide power for the whole detecting device, the power controller 31 is electrically connected with a main board 32 arranged in the housing 1 through a wire, the main board 32 is respectively connected with a pressure sensor 33, an electromagnetic relay 34 and an electromagnetic valve group 35 arranged in the housing 1 through wires, the pressure sensor 33 is arranged on the accommodating cavity 2 and is communicated with the accommodating cavity, the electromagnetic relay 34 is electrically connected with an air pump 36 arranged in the housing 1 through a wire, and preferably, an ohmic electromagnetic dragon relay is selected for controlling the starting and stopping of the air pump 36, and the air pump 36 is communicated with the accommodating cavity 2 through a plurality of pipelines 37 and the electromagnetic valve group 35 to form an inflation and deflation circuit.

Specifically, as shown in fig. 4, 5 and 6, the electromagnetic valve sets 35 in the embodiment of the present utility model are four sets, namely, a 1# electromagnetic valve 351, a 2# electromagnetic valve 352, a 3# electromagnetic valve 353 and a 4# electromagnetic valve 354; wherein, the structures of the 1# electromagnetic valve 351 and the 3# electromagnetic valve 353 are the same, both ends of the two electromagnetic valves are provided with threaded holes, one end of the threaded hole is connected with a Y-shaped joint, and the other end of the threaded hole is connected with an L-shaped joint; the structure of the 2# solenoid valve 352 is the same as that of the 4# solenoid valve 354, both ends of the 2# solenoid valve are provided with threaded holes, one end of the threaded holes is connected with a straight plug-in type connector, the other end of the threaded holes is connected with a silencer, and the purpose of the silencer is to prevent dust from entering the solenoid valve. The line 37 includes trachea A-371, trachea B-372, trachea C-373, trachea D-374, trachea E-375 and trachea F-376. The exhaust port of the air pump 36 is connected with one interface of a Y-shaped connector on the 1# electromagnetic valve 351 through an air pipe A-371, the other interface of the Y-shaped connector is connected with a direct-insertion-type connector on the 2# electromagnetic valve 352 through an air pipe B-372, and an L-shaped connector on the 1# electromagnetic valve 351 is communicated with the air inlet of the accommodating cavity 2 through an air pipe C-373; the air inlet of the air pump 36 is connected with one interface of a Y-shaped connector on the 3# electromagnetic valve 353 through an air pipe D-374, the other interface of the Y-shaped connector is connected with a direct-insertion connector on the 4# electromagnetic valve 354 through an air pipe E-375, and an L-shaped connector on the 3# electromagnetic valve 353 is communicated with an extraction opening of the accommodating cavity 2 through an air pipe F-376.

In addition, as shown in fig. 7 and 8, a liquid crystal touch display screen 121, a start button 122, a stop button 123, a red alarm lamp 124 and a green indicator lamp 125 are respectively installed on the front door 12 in the embodiment of the present utility model, and the liquid crystal touch display screen 121, the start button 122, the stop button 123, the red alarm lamp 124 and the green indicator lamp 125 are respectively connected with the main board 32 through wires, so as to control the positive pressure test or the negative pressure test of the product to be tested. The liquid crystal touch display screen 121 is used for setting and displaying relevant parameter data, such as test time, test air pressure, etc., when the product to be tested is subjected to positive pressure test or negative pressure test; when the start button 122 is pressed, the detection device is started to perform a test; when the stop button 123 is pressed, the detection device is closed, and the test is stopped; the red alarm lamp 124 is used for displaying test results, and when the lamp is on, the tested product is not qualified; the green indicator lamp 125 is used for displaying test results, and the tested product is qualified when the lamp is on.

Through the arrangement, when the positive and negative pressure test is carried out on the product, the specific process is as follows: firstly, a 220V power supply is connected through a power supply and a switch 4, a main switch is pressed down, and the front door 12 is closed; setting related parameters on the liquid crystal touch display screen 121, pressing the start key 122, and opening the air pump 36 to work;

positive pressure test: the 1# solenoid valve 351 and the 4# solenoid valve 354 are opened, the 2# solenoid valve 352 and the 3# solenoid valve 353 are closed, and the air passing sequence is as follows:

4# electromagnetic valve 354 → air pipe E-375 → Y-shaped joint of 3# electromagnetic valve 353 → air pipe D-374 → air pump 36 air inlet → air pump 36 air outlet the air pipe A-351, the Y-shaped joint of the 1# electromagnetic valve 351, the L-shaped joint of the 1# electromagnetic valve 351, the air pipe C-373 and the accommodating cavity 2; at this time, the cavity of the accommodating cavity 2 is in a positive pressure state due to air filling, when the test pressure reaches the preset pressure, the air pump 36 stops working, the detection device is in a pressure maintaining state (the pressure maintaining time is judged according to the preset time), and after the pressure maintaining test is finished, the normal pressure state is automatically shifted.

Negative pressure test: the 2# solenoid valve 352 and the 3# solenoid valve 353 are opened, the 1# solenoid valve 351 and the 4# solenoid valve 354 are closed, and the air passing sequence is as follows:

the accommodating cavity 2- & gt the air pipe F-376- & gt the L-shaped joint of the 3# electromagnetic valve 353- & gt the Y-shaped joint of the 3# electromagnetic valve 353- & gt the air pipe D-374- & gt the air inlet of the air pump 36- & gt the air outlet of the air pump 36- & gt the Y-shaped joint of the air pipe A-351- & gt the 1# electromagnetic valve 351- & gt the air pipe B-372- & gt the 2# electromagnetic valve; at this time, the air in the cavity of the accommodating cavity 2 is exhausted to be in a negative pressure state, when the test pressure reaches the preset pressure, the air pump 36 stops working, the detection device is in a pressure maintaining state (the pressure maintaining time is judged according to the preset time), and after the pressure maintaining test is finished, the normal pressure state is automatically shifted.

In order to ensure the accuracy of the test, the accommodating cavity 2 needs to be in a sealed state during the test, for this purpose, the utility model specifically sets the connection part of the front door 12 and the accommodating cavity 2, as shown in fig. 3, 7 and 8, a cavity panel 21 is arranged on one side of the opening of the accommodating cavity 2, four electromagnetic locks 211 (up, down, left and right positions) are uniformly arranged on the front surface of the cavity panel 21, electromagnetic lock adsorption sheets 126 which are matched with the number and positions of the electromagnetic locks 211 one by one are arranged on the inner surface of the corresponding front door 12, the electromagnetic locks 211 are connected with the main board 32, and linkage control is performed through a start key 122 and a stop key 123; meanwhile, a convex sealing ring 212 is embedded in the cavity panel 21 at a circle of position of the opening of the accommodating cavity 2, the sealing ring 212 is an elastic O-shaped sealing ring, and a sealing baffle 127 is arranged on the inner surface of the corresponding front door 12, so that when the electromagnetic lock 211 and the electromagnetic lock adsorption piece 126 are adsorbed under the control of the starting key 122, the sealing baffle 127 extrudes the sealing ring 212 and enables the sealing ring to elastically deform, and further the sealing effect of the accommodating cavity 2 is ensured. In addition, the front door 12 is further provided with a movable handle 128, and the movable handle 128 is in an open state during the air tightness test, but the front door 12 should be closed during the transportation and placement of the detection device to prevent damage to internal components.

As shown in fig. 1, 2 and 10, the detection device according to the embodiment of the present utility model further includes a micro printer 5 and a speaker 6 disposed on the right side of the housing 1; the micro printer 5 is installed in a square hole preset on the outer side surface of the shell 1 through a printer bracket, the micro printer 5 is respectively connected with the main board 32 and the liquid crystal touch display screen 121, and the liquid crystal touch display screen 121 controls the micro printer 5 to print test related data; the loudspeaker 6 is installed in a groove preset on the outer side surface of the shell 1 through a loudspeaker bracket, a filter screen 7 is attached to the surface of the loudspeaker, and the loudspeaker 6 is connected with the main board 32 through a wire and used for playing the test result of the language.

Preferably, in the embodiment of the utility model, the handles 14 are symmetrically arranged on the left side and the right side of the shell 1, and the handles 14 are embedded in the grooves of the shell when not in use, so that the instrument can be conveniently carried by arranging the handles 14; in addition, a foot pad 15 with adjustable height is respectively arranged at four corners of the bottom of the shell 1 for leveling the detection device.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.

It will be understood that the utility model is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (10)

1. The utility model provides an integrated form gas tightness detection device with it is multi-functional, its characterized in that, including casing (1), casing (1) front portion is through articulated shaft (11) movable mounting qianmen (12), can dismantle in casing (1) and be connected with and be used for placing the cavity (2) that hold of awaiting measuring product, hold opening orientation qianmen (12) one side of cavity (2) just hold the opening of cavity (2) and the internal surface sealing connection of qianmen (12), be provided with in casing (1) with hold cavity (2) intercommunication and to hold actuating mechanism (3) that cavity (2) inside fills or exhaust air, be used for putting into the product that awaits measuring in holding cavity (2) carries out positive pressure test or negative pressure test.

2. The integrated airtight detection device with multiple functions according to claim 1, wherein the actuating mechanism (3) comprises a power supply controller (31) installed at the top of the outer wall of the accommodating cavity (2), an input end of the power supply controller (31) is electrically connected with a power supply and a switch (4) arranged on the side surface of the housing (1) through wires, the power supply controller (31) is electrically connected with a main board (32) installed in the housing (1) through wires, the main board (32) is respectively connected with a pressure sensor (33), an electromagnetic relay (34) and an electromagnetic valve group (35) installed in the housing (1) through wires, the pressure sensor (33) is arranged on the accommodating cavity (2) and is communicated with the accommodating cavity, the electromagnetic relay (34) is electrically connected with an air pump (36) arranged in the housing (1) through wires, and the air pump (36) is communicated with the accommodating cavity (2) through a plurality of pipelines (37) and the electromagnetic valve group (35) to form an air charging and exhausting loop.

3. The integrated air tightness testing device with multiple functions according to claim 2, wherein said electromagnetic valve group (35) is four sets, respectively a 1# electromagnetic valve (351), a 2# electromagnetic valve (352), a 3# electromagnetic valve (353) and a 4# electromagnetic valve (354); the structure of the 1# electromagnetic valve (351) is the same as that of the 3# electromagnetic valve (353), threaded holes are formed in two ends of the 1# electromagnetic valve, one end of the 1# electromagnetic valve is connected with a Y-shaped connector, and the other end of the 1# electromagnetic valve is connected with an L-shaped connector; the structure of the 2# electromagnetic valve (352) is the same as that of the 4# electromagnetic valve (354), both ends of the 2# electromagnetic valve are provided with threaded holes, one end of the 2# electromagnetic valve is connected with a straight plug-in type connector, and the other end of the 2# electromagnetic valve is connected with a silencer;

the pipeline (37) comprises a trachea A (371), a trachea B (372), a trachea C (373), a trachea D (374), a trachea E (375) and a trachea F (376);

the exhaust port of the air pump (36) is connected with one interface of a Y-shaped connector on the 1# electromagnetic valve (351) through an air pipe A (371), the other interface of the Y-shaped connector is connected with an in-line connector on the 2# electromagnetic valve (352) through an air pipe B (372), and an L-shaped connector on the 1# electromagnetic valve (351) is communicated with the air inlet of the accommodating cavity (2) through an air pipe C (373);

the air inlet of the air pump (36) is connected with one interface of a Y-shaped connector on the 3# electromagnetic valve (353) through an air pipe D (374), the other interface of the Y-shaped connector is connected with an in-line connector on the 4# electromagnetic valve (354) through an air pipe E (375), and an L-shaped connector on the 3# electromagnetic valve (353) is communicated with an extraction opening of the accommodating cavity (2) through an air pipe F (376).

4. The integrated air tightness detection device with multiple functions according to claim 2, wherein a liquid crystal touch display screen (121), a start button (122), a stop button (123), a red alarm lamp (124) and a green indicator lamp (125) are respectively installed on the front door (12), and the liquid crystal touch display screen (121), the start button (122), the stop button (123), the red alarm lamp (124) and the green indicator lamp (125) are respectively connected with the main board (32) through wires and are used for controlling positive pressure test or negative pressure test of a product to be detected;

the liquid crystal touch display screen (121) is used for setting and displaying relevant parameter data when the product to be tested is subjected to positive pressure test or negative pressure test.

5. The multifunctional integrated air tightness detection device according to claim 4, wherein the detection device further comprises a micro printer (5), the micro printer (5) is installed in a square hole preset on the outer side surface of the shell (1) through a printer support, the micro printer (5) is respectively connected with a main board (32) and a liquid crystal touch display screen (121), and the liquid crystal touch display screen (121) is used for controlling the micro printer (5) to print test related data.

6. The integrated air tightness detection device with multiple functions according to claim 2, wherein the detection device further comprises a loudspeaker (6), the loudspeaker (6) is installed in a preset groove on the outer side surface of the shell (1) through a loudspeaker bracket, a filter screen (7) is attached to the surface of the loudspeaker, and the loudspeaker (6) is connected with a main board (32) through a wire and used for playing test results of languages.

7. The integrated air tightness detection device with multiple functions according to claim 2, wherein a cavity panel (21) is arranged on one side of the opening of the accommodating cavity (2), a plurality of electromagnetic locks (211) are uniformly arranged on the front surface of the cavity panel (21), electromagnetic lock adsorption sheets (126) which are matched with the electromagnetic locks (211) in number and position one by one are arranged on the inner surface of the front door (12), and the electromagnetic locks (211) are connected with a main board (32); meanwhile, a convex sealing ring (212) is arranged on the cavity panel (21) and located at the position of the opening of the accommodating cavity (2), a sealing baffle (127) is arranged on the inner surface of the front door (12), and after the electromagnetic lock (211) is adsorbed by the electromagnetic lock adsorption sheet (126), the sealing baffle (127) extrudes the sealing ring (212) to realize the sealing of the accommodating cavity (2).

8. The integrated air tightness testing device with multiple functions according to any of the claims 1-7, wherein said front door (12) is further provided with a movable handle (128), said movable handle (128) being used for closing the front door (12) during transportation and placement of the testing device.

9. The integrated air tightness detection device with multiple functions according to claim 8, wherein a rear door (13) is installed at the rear part of the housing (1), the rear door (13) is hinged with the housing (1) through a door shaft, a mechanical lock (131) is arranged on the rear door (13), and the rear door (13) is opened through the mechanical lock (131) for maintaining or replacing parts inside the housing (1).

10. The multifunctional integrated air tightness detection device according to claim 8, wherein handles (14) are symmetrically arranged on the left side and the right side of the shell (1) to facilitate handling of the instrument;

the four corners of the bottom of the shell (1) are respectively provided with a foot pad (15) with adjustable height for leveling the detection device.

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