A simple axial inflation sealing test device, method and processing method

Abstract

The present invention discloses a simple axial inflation sealing test device, method and processing method, comprising a main shell body and a rotating body; a containing chamber is arranged inside the main shell body, and at least one test channel which is respectively connected with the containing chamber is arranged on the main shell body; the rotating body is arranged in the containing chamber, and the rotating body and the main shell body can rotate relative to each other; an axial inlet / exhaust channel and at least one air path channel are arranged inside the rotating body; one end of the inlet / exhaust channel has an inlet / exhaust port, and the other end thereof is closed; one end of the air path channel has a first connection port which is connected with the inlet / exhaust channel, and the other end has a second connection port which is connected with the containing chamber; and also includes a sealing structure; the testing device of the present invention is used for performing airtightness test on non-sealed products or sealed products, and has the characteristics of simple structure, convenient processing and assembly, and good testing accuracy.

Description

Technical Field

[0001] The invention relates to an airtightness testing structure, in particular to a simple axial inflation sealing testing device, method and processing method. Background Art

[0002] As electronic components, such as crystal oscillators and chips, become smaller and smaller, smaller test volumes are required to improve test sensitivity and accuracy and achieve ideal test results. In the prior art, a Chinese invention patent with application number 201910334704.5 discloses a differential pressure air tightness tester and a testing method, wherein the differential pressure air tightness tester comprises an air source interface, an air charging / inhalation valve, an air release valve, a first pressure-maintaining valve, a second pressure-maintaining valve, a differential pressure sensor, a first pressure-dividing valve, a second pressure-dividing valve, an interface of an object to be measured, an interface of a reference object, a first pressure-dividing tank and a second pressure-dividing tank; the air source interface is connected to the air charging / inhalation valve, and the air outlet ends of the air charging / inhalation valve are respectively connected to the first pressure-maintaining valve, the second pressure-maintaining valve and the air release valve; the first pressure-maintaining valve is connected to the interface of the object to be measured; the second pressure-maintaining valve is connected to the interface of the reference object; one end of the differential pressure sensor is connected between the first pressure-maintaining valve and the interface of the object to be measured, and the other end is connected between the second pressure-maintaining valve and the interface of the reference object; one end of the first pressure-dividing valve is connected between the first pressure-maintaining valve and the interface of the object to be measured, and the other end is connected to the first pressure-dividing tank; one end of the second pressure-dividing valve is connected between the second pressure-maintaining valve and the interface of the reference object, and the other end is connected to the second pressure-dividing tank. The test gas path of this structure has the disadvantages of complex structure, difficult processing, difficult assembly, and large internal cavity volume, which leads to high cost and low efficiency, and it is difficult to meet higher test requirements and mass applications. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a simple axial inflation sealing test device, which is used for performing airtightness tests on non-sealed products or sealed products, and has the characteristics of simple structure, convenient processing and assembly, and good testing accuracy; further, it is particularly easy to be processed into a test air path structure with an ultra-small internal cavity, so as to meet the airtightness test requirements and batch application of ultra-small sealed products; further, it can meet the airtightness test requirements and batch application of non-sealed products.

[0004] The second object of the present invention is to provide a testing method for a simplified axial inflation sealing testing device, which has the characteristics of good testing accuracy, convenient operation, high work efficiency and low labor cost.

[0005] The third purpose of the present invention is to provide a simple processing method for an axial inflation sealing test device, which has the characteristics of convenient processing and simple assembly, and solves the processing problems of the accommodating chamber, air path, and sealing groove inside the shell and the assembly problems of the seal.

[0006] One of the purposes of the present invention is achieved by the following technical solution:

[0007] A simple axial inflation sealing test device, characterized in that it comprises a main housing and a rotating body;

[0008] The main housing is provided with a receiving chamber inside, and the main housing is provided with at least one test channel which is respectively communicated with the receiving chamber;

[0009] The rotating body is arranged in the accommodating chamber, and the rotating body and the main shell can rotate relatively; an axial inlet / exhaust channel and at least one gas path channel are arranged in the rotating body; one end of the inlet / exhaust channel has an inlet / exhaust port, and the other end thereof is closed; one end of the gas path channel has a first connection port communicating with the inlet / exhaust channel, and the other end has a second connection port communicating with the accommodating chamber;

[0010] Also includes a sealing structure;

[0011] When the rotating body rotates counterclockwise or clockwise relative to the main housing, the airtightness test structure meets the following conditions at the same time:

[0012] Condition 1: The second connection port of the gas path channel is connected to the test channel, and the connection between them is sealed by the sealing structure, so that the inlet / exhaust channel, the gas path channel, and the test channel are connected in sequence to form a sealed charging / inhaling channel;

[0013] Condition 2: The second connection port of the gas path channel is disconnected from the test channel by misalignment, and one end of the test channel is closed, while the other end is used to form a sealed airtight test channel with the product to be tested.

[0014] In an optional embodiment, the sealing structure includes a first sealing ring disposed at an opening of the test channel adjacent to a side of the accommodating chamber;

[0015] Or,

[0016] The sealing structure comprises a sealing sleeve sleeved on the outer periphery of the rotating body, and a through hole is arranged on the side wall of the sealing sleeve. The through holes are the same in number as the test channels and are arranged in a one-to-one correspondence; the through holes are communicated with the second connecting port of the gas path channel.

[0017] In an optional embodiment, it also includes sealing connectors that are equal in number to the test channels and are arranged in a one-to-one correspondence, the sealing connectors having a first sealing interface and a second sealing interface, the first sealing interface being sealedly connected to the opening of the test channel on the side away from the accommodating chamber, and the second sealing interface being used to seal and connect to the inlet / exhaust port of the product to be tested; when one port of the test channel is closed, the other port thereof is connected to the product to be tested through the sealing connector to form the airtight test channel; the product to be tested is a non-sealed product.

[0018] In an optional embodiment, it further includes test fixtures that are equal in number to the test channels and are arranged in a one-to-one correspondence, the test fixture including a test fixture body, a test cavity being arranged on the test fixture body, and the test cavity being connected to the test channel; when one port of the test channel is closed, the other port thereof is connected to the test cavity for placing the product to be tested to form the airtight test channel; the product to be tested is a sealed product.

[0019] In an optional implementation, a second sealing ring is provided at the opening of the test cavity adjacent to one side of the accommodating chamber.

[0020] In an optional embodiment, the rotating body also includes a rotating shaft extending axially outward from the center of the rotating body; a driving mechanism is also provided on the main shell, and the output shaft of the driving mechanism is fixedly connected to the rotating shaft. The driving mechanism drives the rotating shaft to rotate, and the rotating shaft then drives the rotating body to rotate clockwise or counterclockwise.

[0021] In an optional embodiment, a pressure sensor for detecting the air pressure in the air tightness test channel is also included.

[0022] In an optional embodiment, an inlet / exhaust channel is axially arranged at the center of the rotating body; N air paths are evenly arranged radially on the same radial plane of the rotating body, N≥2; an angle a is formed between each two adjacent air paths, a=360° / N; the number of the air paths is the same as the number of the test channels and is arranged one-to-one.

[0023] In an optional embodiment, the simplified axial inflation sealing test device includes more than two groups of test gas path structures, and the test gas path structure consists of a gas path channel, a test channel, and a test cavity; the test gas path structure satisfies any of the following test methods:

[0024] Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the seal product to be tested, and the other group is used to test the standard seal product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtightness test channel, forming a pressure difference comparison gas path;

[0025] Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard seals, and the remaining gas path structures are used to test the seals to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel;

[0026] Test method three: All test gas path structures are used to test the sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

[0027] In an optional embodiment, the simplified axial inflation sealing test device includes more than two groups of test gas path structures, and the test gas path structure consists of a gas path channel, a test channel, and a sealing connector; the test gas path structure satisfies any of the following test methods:

[0028] Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the non-sealed product to be tested, and the other group is used to test the standard non-sealed product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtight test channel, forming a pressure difference comparison gas path;

[0029] Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard non-sealed products, and the remaining gas path structures are used to test non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel;

[0030] Test method three: All test gas path structures are used to test the non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

[0031] In an optional implementation, a differential pressure sensor is further provided between every two groups of pressure sensors of the test gas path structure.

[0032] In an optional embodiment, it also includes an air source device connected to the inlet / exhaust port of the inlet / exhaust channel; the air source device is a vacuum pumping device or an inflation / inhalation pressurization device.

[0033] In an optional embodiment, the main housing is a split structure, which includes more than two sub-housings, and the sub-housings are fixedly connected in a detachable manner.

[0034] In an optional embodiment, the shape of the accommodating chamber is circular, and correspondingly, the shape of the rotating body is circular.

[0035] The second object of the present invention is achieved by adopting the following technical solution:

[0036] A testing method for a simplified axial inflation sealing test device, characterized in that it comprises the following steps:

[0037] 1) Single non-sealed product testing steps:

[0038] 1-1) Preparation step: seal the non-sealed product to be tested with the test channel through a sealing connector, and connect the air source device with the inlet / exhaust port of the inlet / exhaust channel;

[0039] 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connection port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested, after a preset time or after reaching a preset pressure, the pressure value is recorded as P1, and pressurizing or vacuuming is stopped;

[0040] 1-3) Air tightness test steps: continue to drive the rotating body or the main shell to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel, and one port of the test channel is closed, and the other port is connected to the non-sealed product to be tested through a sealing connector to form a sealed airtightness test channel; after a preset pressure holding time, detect the pressure value in the test chamber and record the pressure value as P2; compare the pressure difference between P2 and P1, if the pressure difference exceeds the specified range, the non-sealed product to be tested is determined to be an unqualified airtight product; if the pressure difference is within the specified range, the non-sealed product to be tested is determined to be a qualified airtight product.

[0041] A testing method for a simplified axial inflation sealing test device, characterized in that it comprises the following steps:

[0042] Comparative test steps for double non-sealed products:

[0043] Preparation steps: Seal and connect the non-sealed product to be tested and the standard non-sealed product to a test channel through a sealing connector respectively, and connect the two air source devices to the two inlet / exhaust channels respectively; adopt the same test steps for the non-sealed product to be tested and the standard non-sealed product;

[0044] Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connection port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested and the standard non-sealed product respectively, and stopping pressurizing or vacuuming after a preset time or after a preset pressure is reached;

[0045] Air tightness test steps: continue to drive the rotating body or the main shell to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel, and one port of the test channel is closed, and the other port is connected to the non-sealed product to be tested or the standard non-sealed product through a sealing connector to form a sealed airtightness test channel; after a preset pressure holding time, respectively detect the pressure values ​​in the two airtightness test channels, and compare the pressure difference in the two airtightness test channels. If the pressure difference exceeds the specified range, the non-sealed product to be tested is determined to be an unqualified airtight product; if the pressure difference is within the specified range, the non-sealed product to be tested is determined to be a qualified airtight product.

[0046] In an optional implementation, a differential pressure sensor is further provided between the pressure sensors of the two groups of gas path structures, and the pressure difference in the two air tightness test channels is detected by the differential pressure sensor.

[0047] A testing method for a simplified axial inflation sealing test device, characterized in that it comprises the following steps:

[0048] 1) Single seal product test steps:

[0049] 1-1) Preparation steps: Place the seal to be tested into the test chamber and connect the air source device to the inlet / exhaust channel;

[0050] 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the sealed product to be tested, after a preset time or after reaching a preset pressure, the pressure value is recorded as P3, and pressurizing or vacuuming is stopped;

[0051] 1-3) Small leak test steps: continue to drive the rotating body or the main shell to rotate a preset angle in the same direction, the first connection port of the gas path channel is disconnected from the inlet / exhaust channel, and the second connection port is disconnected from the test channel, and the test channels are closed, so that the test channel and the test cavity are connected to form a sealed small leak test channel; after a preset pressure holding time, detect the pressure value in the test cavity and record the pressure value as P4; compare the pressure difference between P4 and P3, if the pressure difference exceeds the specified range, determine that the sealed product to be tested is an unqualified product with a small leak; if the pressure difference is within the specified range, determine that the sealed product to be tested is a qualified product with a small leak.

[0052] A testing method for a simplified axial inflation sealing test device, characterized in that it comprises the following steps:

[0053] Double seal product comparison test steps:

[0054] Equipment preparation steps: Place the seal to be tested and the standard seal into two test chambers respectively, and connect the air source device to the inlet / exhaust channel; use the same test steps for the seal to be tested and the standard seal;

[0055] Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air path channel is connected to the test channel, so that the air inlet / exhaust channel, the air path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing / vacuuming the sealed product to be tested and the standard sealed product respectively, and stopping pressurizing / vacuuming after a preset time or when a preset pressure is reached;

[0056] Small leak test steps: continue to drive the rotating body or the main shell to rotate a preset angle in the same direction, the second connection port of the gas path channel is disconnected from the test channel by displacement, and the test channels are all closed, so that the test channel and the test cavity are connected to form a sealed small leak test channel; after a preset pressure holding time, compare the pressure difference in the two test cavities, if the pressure difference exceeds the specified range, the sealed product to be tested is determined to be an unqualified product with small leaks; if the pressure difference is within the specified range, the sealed product to be tested is determined to be a qualified product with small leaks.

[0057] In an optional implementation, the pressure difference between the two test chambers is detected by a pressure difference sensor.

[0058] The third object of the present invention is achieved by adopting the following technical solution:

[0059] A method for manufacturing a simplified axial inflation sealing test device, characterized in that it comprises the following steps:

[0060] The main shell processing step includes: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into two or more sub-shells; processing a test channel on the sub-shells, and processing an annular sealing groove at the opening of the test channel adjacent to one side of the receiving chamber;

[0061] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0062] Assembly steps: install a sealing ring in the sealing groove of each test channel, then assemble two or more sub-shells in a detachable fixed connection to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0063] A method for processing airtightness testing equipment, characterized in that it comprises the following steps:

[0064] Main shell processing steps: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into more than two sub-shells; processing a test channel on the sub-shells;

[0065] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0066] Assembly steps: install a sealing sleeve on the outer periphery of the rotating body, assemble two or more sub-shells in a detachable fixed connection manner to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] 1. The present invention includes a main housing, a rotating body, and a sealing structure; during the counterclockwise or clockwise rotation of the rotating body relative to the main housing, the airtightness test structure satisfies the following conditions at the same time: Condition 1: The second connection port of the air path channel is connected to the test channel, and the connection between them is sealed by the sealing structure, so that the inlet / exhaust channel, the air path channel, and the test channel are connected in sequence to form a sealed charging / inhalation channel; Condition 2: The second connection port of the air path channel is disconnected from the test channel by misalignment, and one end of the test channel is closed, and the other end is used to form a sealed airtightness test channel with the product to be tested; The device is used to perform airtightness tests on non-sealed products or sealed products, and a rotating body is used to switch between the air path channel and the test channel. There is no need to set too many solenoid valves and related pipe fittings on the valve pipeline test loop, and it has the advantages of simple structure, convenient processing and assembly, good test accuracy and convenient operation. The traditional valve pipeline test loop cannot achieve the ultra-small volume of the chip test level, while the present device meets the airtightness test requirements and batch application of non-sealed products and sealed products.

[0069] 2. The present invention also includes a sealing connector with the same number of test channels and one-to-one correspondence, which can meet the airtightness test requirements and batch application of non-sealed products. In addition, it also includes a test fixture with the same number of test channels and one-to-one correspondence, which is particularly easy to process into a test gas path structure with an ultra-small internal cavity, meeting the airtightness test requirements and batch application of ultra-small sealed products.

[0070] 3. The rotating body of the present invention further includes a rotating shaft extending axially outward from the center of the rotating body; a driving mechanism is also provided on the main housing, and the output shaft of the driving mechanism is fixedly connected to the rotating shaft, and the rotating shaft is driven by the driving mechanism to rotate, and then the rotating body is driven by the rotating shaft to rotate clockwise or counterclockwise. Preferably, the driving mechanism is a servo motor. This design can realize automatic control of the rotating body, ensure the accuracy of the rotation angle, and reduce labor intensity.

[0071] 4. The simplified axial inflatable sealing test device of the present invention includes more than two groups of test gas path structures; such a design can realize the use of multiple channels in parallel, and each two channels can form a pressure difference comparison gas path. The use of multiple channels in parallel has the characteristics of good test consistency, convenient operation, high work efficiency and low labor cost.

[0072] 5. The test method of the present invention can switch between the gas path and the test channel by driving the rotating body to rotate, without the need to frequently operate various control valves. It has the characteristics of good test accuracy, convenient operation, high work efficiency and low labor cost. It lays a technical foundation for vigorously promoting testing in this industry, making a large number of applications possible, which can greatly enhance the development of the industry and promote the development of high-end equipment manufacturing industry. In terms of test usage, direct pressure test, differential pressure test or direct pressure comparison test can be used at the same time.

[0073] 6. The processing method of the present invention divides the main shell body into more than two sub-shells, which has the characteristics of convenient processing and simple assembly, and solves the processing problems of the accommodating chamber, gas path, sealing groove inside the shell and the assembly problems of the sealing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 It is a structural schematic diagram of a simplified axial inflation sealing test device in an intake or exhaust state according to the first embodiment;

[0075] Figure 2 It is a structural schematic diagram of a simplified axial inflation sealing test device in a pressure-maintaining or airtightness test state according to Embodiment 1;

[0076] Figure 3 This is a schematic structural diagram of the main housing of Embodiment 1;

[0077] Figure 4 It is a structural schematic diagram of the rotating body of the first embodiment;

[0078] Figure 5 It is a structural schematic diagram of a simplified axial inflation sealing test device with an air source device according to the first embodiment;

[0079] Figure 6 It is a structural schematic diagram of the split main housing of the first embodiment;

[0080] Figure 7 It is a structural schematic diagram of a simplified axial inflation sealing test device with two sets of test air path structures according to the first embodiment;

[0081] Figure 8 It is a structural schematic diagram of a simplified axial inflation sealing test device with four sets of test air path structures according to the first embodiment;

[0082] Fig. 9 It is a structural schematic diagram of a simplified axial inflation sealing test device with eight test gas path structures according to the first embodiment;

[0083] Fig.10 It is a structural schematic diagram of a simplified axial inflation sealing test device using a sealing sleeve according to the second embodiment;

[0084] Fig.11 It is a structural schematic diagram of a simplified axial inflation sealing test device with two sets of test air path structures according to the second embodiment;

[0085] Fig.12 It is a structural schematic diagram of a simplified axial inflation sealing test device with four sets of test air path structures according to the second embodiment;

[0086] Fig.13 It is a structural schematic diagram of a simplified axial inflation sealing test device with eight test gas path structures according to the second embodiment;

[0087] Fig.14 It is a structural schematic diagram of a simplified axial inflation sealing test device in an intake or exhaust state according to Embodiment 3;

[0088] Fig.15 It is a structural schematic diagram of a simplified axial inflation sealing test device with two sets of test air path structures according to the third embodiment;

[0089] Fig.16 It is a structural schematic diagram of a simplified axial inflation sealing test device with four sets of test air path structures according to the third embodiment;

[0090] Fig.17 It is a structural schematic diagram of a simplified axial inflation sealing test device with eight test gas path structures according to Embodiment 3;

[0091] Fig.18 It is a structural schematic diagram of a simplified axial inflation sealing test device using a sealing sleeve according to the fourth embodiment;

[0092] Fig.19 It is a structural schematic diagram of a simplified axial inflation sealing test device with two sets of test air path structures according to the fourth embodiment;

[0093] Fig. 20 It is a structural schematic diagram of a simplified axial inflation sealing test device with four sets of test air path structures according to the fourth embodiment;

[0094] Fig.21 This is a structural schematic diagram of a simplified axial inflation sealing test device with eight test air path structures according to Embodiment 4.

[0095] In the figure: 10, main shell; 11, accommodating chamber; 12, test channel; 20, rotating body; 21, air path; 211, first connecting port; 212, second connecting port; 22, inlet / exhaust channel; 31, first sealing ring; 32, sealing sleeve; 40, sealing connector; 50, air source device; 61, test fixture body; 62, test chamber; 63, second sealing ring; 100, non-sealed product; 200, sealed product. DETAILED DESCRIPTION

[0096] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and the limitations of the present application cannot be understood.

[0097] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0098] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0099] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0100] Embodiment 1:

[0101] Reference Figure 1-9 , a simple axial inflatable sealing test device, comprising a main housing 10 and a rotating body 20;

[0102] The main housing 10 is provided with a receiving chamber 11 inside, and the main housing 10 is provided with at least one test channel 12 which is respectively communicated with the receiving chamber 11;

[0103] The rotating body 20 is disposed in the accommodating chamber 11, and the rotating body 20 and the main housing 10 can rotate relative to each other; an axial inlet / exhaust passage 22 and at least one gas path passage 21 are disposed in the rotating body 20; one end of the inlet / exhaust passage 22 has an inlet / exhaust port, and the other end thereof is closed; one end of the gas path passage 21 has a first connection port 211 communicating with the inlet / exhaust passage, and the other end has a second connection port 212 communicating with the accommodating chamber;

[0104] Also includes a sealing structure;

[0105] When the rotating body rotates counterclockwise or clockwise relative to the main housing, the airtightness test structure meets the following conditions at the same time:

[0106] Condition 1: The second connection port of the gas path channel is connected to the test channel, and the connection between them is sealed by the sealing structure, so that the inlet / exhaust channel, the gas path channel, and the test channel are connected in sequence to form a sealed charging / inhaling channel;

[0107] Condition 2: The second connection port of the gas path channel is disconnected from the test channel by misalignment, and one end of the test channel is closed, while the other end is used to form a sealed airtight test channel with the product to be tested.

[0108] In a preferred implementation of the present invention, the simplified axial inflation sealing test device of this embodiment also includes a sealing connector 40 which is the same in number as the test channels and is arranged one-to-one, and the sealing connector has a first sealing interface and a second sealing interface, the first sealing interface is sealedly connected to the opening of the test channel away from the side of the accommodating chamber, and the second sealing interface is used to be sealedly connected to the inlet / exhaust port of the product to be tested; when one port of the test channel is closed, the other port thereof is connected to the product to be tested through the sealing connector to form the airtight test channel; the product to be tested is a non-sealed product 100.

[0109] In a preferred embodiment of the present invention, the sealing structure includes a first sealing ring 31 disposed at the opening of the test channel adjacent to one side of the accommodating chamber. Specifically, the sealing ring can be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicone rubber sealing ring.

[0110] In a preferred embodiment of the present invention, the rotating body further includes a rotating shaft extending axially outward from the center of the rotating body; a driving mechanism is also provided on the main housing, and an output shaft of the driving mechanism is fixedly connected to the rotating shaft, and the rotating shaft is driven by the driving mechanism to rotate, and then the rotating body is driven by the rotating shaft to rotate clockwise or counterclockwise. Preferably, the driving mechanism is a servo motor. Such a design can realize automatic control of the rotating body 20, ensure the accuracy of the rotation angle, and reduce labor intensity.

[0111] In a preferred embodiment of the present invention, it also includes an air source device 50 connected to the air inlet / exhaust passage; the air source device is a vacuum pumping device or a charging / inhaling pressurizing device.

[0112] In a preferred embodiment of the present invention, the main housing is a split structure, which includes more than two sub-housings, and each sub-housing is fixedly connected in a detachable manner, specifically, two bisected sub-housings, four quadranted sub-housings, etc.

[0113] In a preferred embodiment of the present invention, the shape of the accommodating chamber is circular, and correspondingly, the shape of the rotating body is circular.

[0114] In a preferred embodiment of the present invention, a pressure sensor for detecting the air pressure in the air tightness test channel is also included. The pressure sensor is a direct pressure sensor.

[0115] In a preferred embodiment of the present invention, an inlet / exhaust channel is axially arranged at the center of the rotating body; N gas channels are uniformly arranged radially on the same radial plane of the rotating body, N≥2; an angle a is formed between each two adjacent gas channels, a=360° / N; the number of gas channels is the same as the number of test channels and is arranged one-to-one. Specifically, when N=2, a=360° / N=360° / 2=180°; when N=3, a=360° / N=360° / 3=120°; when N=4, a=360° / N=360° / 4=90°; when N=8, a=360° / N=360° / 8=45°.

[0116] In a preferred embodiment of the present invention, the simplified axial inflation sealing test device includes more than two groups of test gas path structures, and the test gas path structure is composed of a gas path channel, a test channel, and a sealing connector; the test gas path structure satisfies any of the following test methods:

[0117] Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the non-sealed product to be tested, and the other group is used to test the standard non-sealed product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtight test channel, forming a pressure difference comparison gas path;

[0118] Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard non-sealed products, and the remaining gas path structures are used to test non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel;

[0119] Test method three: All test gas path structures are used to test the non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

[0120] A testing method for a simplified axial inflation sealing test device comprises the following steps:

[0121] 1) Single non-sealed product testing steps:

[0122] 1-1) Preparation step: seal the non-sealed product to be tested with the test channel through a sealing connector, and connect the air source device with the inlet / exhaust port of the inlet / exhaust channel;

[0123] 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connection port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested, after a preset time or after reaching a preset pressure, the pressure value is recorded as P1, and pressurizing or vacuuming is stopped;

[0124] 1-3) Air tightness test steps: continue to drive the rotating body or the main shell to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel, and one port of the test channel is closed, and the other port is connected to the non-sealed product to be tested through a sealing connector to form a sealed airtightness test channel; after a preset pressure holding time, detect the pressure value in the test chamber and record the pressure value as P2; compare the pressure difference between P2 and P1, if the pressure difference exceeds the specified range, the non-sealed product to be tested is determined to be an unqualified airtight product; if the pressure difference is within the specified range, the non-sealed product to be tested is determined to be a qualified airtight product.

[0125] A testing method for a simplified axial inflation sealing test device comprises the following steps:

[0126] Comparative test steps for double non-sealed products:

[0127] Preparation steps: Seal and connect the non-sealed product to be tested and the standard non-sealed product to a test channel through a sealing connector respectively, and connect the two air source devices to the two inlet / exhaust channels respectively; adopt the same test steps for the non-sealed product to be tested and the standard non-sealed product;

[0128] Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connection port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested and the standard non-sealed product respectively, and stopping pressurizing or vacuuming after a preset time or after a preset pressure is reached;

[0129] Air tightness test steps: continue to drive the rotating body or the main shell to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel, and one port of the test channel is closed, and the other port is connected to the non-sealed product to be tested or the standard non-sealed product through a sealing connector to form a sealed airtightness test channel; after a preset pressure holding time, respectively detect the pressure values ​​in the two airtightness test channels, and compare the pressure difference in the two airtightness test channels. If the pressure difference exceeds the specified range, the non-sealed product to be tested is determined to be an unqualified airtight product; if the pressure difference is within the specified range, the non-sealed product to be tested is determined to be a qualified airtight product.

[0130] In a preferred embodiment of the present invention, a differential pressure sensor is further provided between the pressure sensors of the two groups of gas path structures, and the differential pressure sensor is used to detect and obtain the pressure difference in the two air tightness test channels.

[0131] A method for manufacturing a simplified axial inflation sealing test device comprises the following steps:

[0132] The main shell processing step includes: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into two or more sub-shells; processing a test channel on the sub-shells, and processing an annular sealing groove at the opening of the test channel adjacent to one side of the receiving chamber;

[0133] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0134] Assembly steps: install a sealing ring in the sealing groove of each test channel, then assemble two or more sub-shells in a detachable fixed connection to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0135] Embodiment 2:

[0136] Please refer to Figure 10-13 The characteristics of this embodiment are: the sealing structure includes a sealing sleeve 32 sleeved on the outer periphery of the rotating body, the side wall of the sealing sleeve is provided with through holes, the number of the through holes is the same as the number of the test channels and they are arranged one by one; the through holes are connected to the second connection port of the gas path channel. Specifically, the sealing sleeve can be a rubber sealing sleeve, a hydrogenated nitrile rubber sealing sleeve or a silicone rubber sealing sleeve.

[0137] The other structures are the same as those in the first embodiment.

[0138] A method for manufacturing a simplified axial inflation sealing test device comprises the following steps:

[0139] Main shell processing steps: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into more than two sub-shells; processing a test channel on the sub-shells;

[0140] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0141] Assembly steps: install a sealing sleeve on the outer periphery of the rotating body, assemble two or more sub-shells in a detachable fixed connection manner to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0142] Embodiment three:

[0143] Reference Figure 14-17 , a simple axial inflatable sealing test device, comprising a main housing 10 and a rotating body 20;

[0144] The main housing 10 is provided with a receiving chamber 11 inside, and the main housing 10 is provided with at least one test channel 12 which is respectively communicated with the receiving chamber 11;

[0145] The rotating body 20 is disposed in the accommodating chamber 11, and the rotating body 20 and the main housing 10 can rotate relative to each other; an axial inlet / exhaust passage 22 and at least one gas path passage 21 are disposed in the rotating body 20; one end of the inlet / exhaust passage 22 has an inlet / exhaust port, and the other end thereof is closed; one end of the gas path passage 21 has a first connection port 211 communicating with the inlet / exhaust passage, and the other end has a second connection port 212 communicating with the accommodating chamber;

[0146] Also includes a sealing structure;

[0147] When the rotating body rotates counterclockwise or clockwise relative to the main housing, the airtightness test structure meets the following conditions at the same time:

[0148] Condition 1: The second connection port of the gas path channel is connected to the test channel, and the connection between them is sealed by the sealing structure, so that the inlet / exhaust channel, the gas path channel, and the test channel are connected in sequence to form a sealed charging / inhaling channel;

[0149] Condition 2: The second connection port of the gas path channel is disconnected from the test channel by misalignment, and one end of the test channel is closed, while the other end is used to form a sealed airtight test channel with the product to be tested.

[0150] In a preferred embodiment of the present invention, a test fixture having the same number as the test channels and arranged one-to-one, the test fixture comprising a test fixture body 61, a test cavity 62 arranged on the test fixture body, the test cavity 62 being in communication with the test channel; when one end of the test channel is closed, the other end thereof is in communication with the test cavity for placing the product to be tested to form the airtight test channel; the product to be tested is a sealed product 200. A second sealing ring 63 is arranged at the opening of the test cavity 62 adjacent to one side of the accommodating chamber.

[0151] In a preferred embodiment of the present invention, the sealing structure includes a first sealing ring 31 disposed at the opening of the test channel adjacent to one side of the accommodating chamber. Specifically, the sealing ring can be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicone rubber sealing ring.

[0152] In a preferred embodiment of the present invention, the rotating body further includes a rotating shaft extending axially outward from the center of the rotating body; a driving mechanism is also provided on the main housing, and an output shaft of the driving mechanism is fixedly connected to the rotating shaft, and the rotating shaft is driven by the driving mechanism to rotate, and then the rotating body is driven by the rotating shaft to rotate clockwise or counterclockwise. Preferably, the driving mechanism is a servo motor. Such a design can realize automatic control of the rotating body 20, ensure the accuracy of the rotation angle, and reduce labor intensity.

[0153] In a preferred embodiment of the present invention, it also includes an air source device 50 connected to the air inlet / exhaust passage; the air source device is a vacuum pumping device or a charging / inhaling pressurizing device.

[0154] In a preferred embodiment of the present invention, the main housing is a split structure, which includes more than two sub-housings, and each sub-housing is fixedly connected in a detachable manner, specifically, two bisected sub-housings, four quadranted sub-housings, etc.

[0155] In a preferred embodiment of the present invention, the shape of the accommodating chamber is circular, and correspondingly, the shape of the rotating body is circular.

[0156] In a preferred embodiment of the present invention, a pressure sensor for detecting the air pressure in the air tightness test channel is also included. The pressure sensor is a direct pressure sensor.

[0157] In a preferred embodiment of the present invention, an inlet / exhaust channel is axially arranged at the center of the rotating body; N gas channels are uniformly arranged radially on the same radial plane of the rotating body, N≥2; an angle a is formed between each two adjacent gas channels, a=360° / N; the number of gas channels is the same as the number of test channels and is arranged one-to-one. Specifically, when N=2, a=360° / N=360° / 2=180°; when N=3, a=360° / N=360° / 3=120°; when N=4, a=360° / N=360° / 4=90°; when N=8, a=360° / N=360° / 8=45°.

[0158] In a preferred embodiment of the present invention, the simplified axial inflation sealing test device includes more than two groups of test gas path structures, and the test gas path structure consists of a gas path channel, a test channel, and a test cavity; the test gas path structure satisfies any of the following test methods:

[0159] Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the seal product to be tested, and the other group is used to test the standard seal product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtightness test channel, forming a pressure difference comparison gas path;

[0160] Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard seals, and the remaining gas path structures are used to test the seals to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel;

[0161] Test method three: All test gas path structures are used to test the sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

[0162] A testing method for a simplified axial inflation sealing test device comprises the following steps:

[0163] 1) Single seal product test steps:

[0164] 1-1) Preparation steps: Place the seal to be tested into the test chamber and connect the air source device to the inlet / exhaust channel;

[0165] 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the sealed product to be tested, after a preset time or after reaching a preset pressure, the pressure value is recorded as P3, and pressurizing or vacuuming is stopped;

[0166] 1-3) Small leak test steps: continue to drive the rotating body or the main shell to rotate a preset angle in the same direction, the first connection port of the gas path channel is disconnected from the inlet / exhaust channel, and the second connection port is disconnected from the test channel, and the test channels are closed, so that the test channel and the test cavity are connected to form a sealed small leak test channel; after a preset pressure holding time, detect the pressure value in the test cavity and record the pressure value as P4; compare the pressure difference between P4 and P3, if the pressure difference exceeds the specified range, determine that the sealed product to be tested is an unqualified product with a small leak; if the pressure difference is within the specified range, determine that the sealed product to be tested is a qualified product with a small leak.

[0167] A testing method for a simplified axial inflation sealing test device comprises the following steps:

[0168] Double seal product comparison test steps:

[0169] Equipment preparation steps: Place the seal to be tested and the standard seal into two test chambers respectively, and connect the air source device to the inlet / exhaust channel; use the same test steps for the seal to be tested and the standard seal;

[0170] Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air path channel is connected to the test channel, so that the air inlet / exhaust channel, the air path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing / vacuuming the sealed product to be tested and the standard sealed product respectively, and stopping pressurizing / vacuuming after a preset time or when a preset pressure is reached;

[0171] Small leak test steps: continue to drive the rotating body or the main shell to rotate a preset angle in the same direction, the second connection port of the gas path channel is disconnected from the test channel by displacement, and the test channels are all closed, so that the test channel and the test cavity are connected to form a sealed small leak test channel; after a preset pressure holding time, compare the pressure difference in the two test cavities, if the pressure difference exceeds the specified range, the sealed product to be tested is determined to be an unqualified product with small leaks; if the pressure difference is within the specified range, the sealed product to be tested is determined to be a qualified product with small leaks.

[0172] In a preferred embodiment of the present invention, a differential pressure sensor is further provided between the pressure sensors of the two groups of gas path structures, and the differential pressure sensor is used to detect and obtain the pressure difference in the two air tightness test channels.

[0173] A method for manufacturing a simplified axial inflation sealing test device comprises the following steps:

[0174] The main shell processing step includes: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into two or more sub-shells; processing a test channel on the sub-shells, and processing an annular sealing groove at the opening of the test channel adjacent to one side of the receiving chamber;

[0175] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0176] Assembly steps: install a sealing ring in the sealing groove of each test channel, then assemble two or more sub-shells in a detachable fixed connection to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0177] Embodiment 4:

[0178] Please refer to Figure 18-21 The characteristics of this embodiment are: the sealing structure includes a sealing sleeve 32 sleeved on the outer periphery of the rotating body, the side wall of the sealing sleeve is provided with through holes, the number of the through holes is the same as the number of the test channels and they are arranged one by one; the through holes are connected to the second connection port of the gas path channel. Specifically, the sealing sleeve can be a rubber sealing sleeve, a hydrogenated nitrile rubber sealing sleeve or a silicone rubber sealing sleeve.

[0179] The other structures are the same as those of the third embodiment.

[0180] A method for manufacturing a simplified axial inflation sealing test device comprises the following steps:

[0181] Main shell processing steps: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into more than two sub-shells; processing a test channel on the sub-shells;

[0182] Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body;

[0183] Assembly steps: install a sealing sleeve on the outer periphery of the rotating body, assemble two or more sub-shells in a detachable fixed connection manner to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

[0184] Other embodiments:

[0185] The number N of the gas path channels is 5, 6, 7, 9, 10 or more, and correspondingly, the present invention includes 5, 6, 7, 9, 10 or more test gas path structures. The sealing test device of the present invention is not limited to working in a rotating manner, and the gas path state can also be switched by axial sliding of the shaft and the housing, thereby achieving the same test function.

[0186] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes (e.g., changes in size, dimensions, structure, shape and proportion of the various elements, mounting arrangements, use of materials, color, orientation, etc.) may be envisioned by those skilled in the art without actually departing from the scope and spirit of the claims.

[0187] Finally, it should be noted that the above-mentioned implementation modes are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention are within the scope of protection required by the present invention.

Claims

1. A simple axial inflation sealing test device, characterized in that: It includes a main shell and a rotating body; The main housing is provided with a receiving chamber inside, and the main housing is provided with at least one test channel which is respectively communicated with the receiving chamber; The rotating body is arranged in the accommodating chamber, and the rotating body and the main shell can rotate relatively; an axial inlet / exhaust channel and at least one gas path channel are arranged in the rotating body; one end of the inlet / exhaust channel has an inlet / exhaust port, and the other end thereof is closed; one end of the gas path channel has a first connection port communicating with the inlet / exhaust channel, and the other end has a second connection port communicating with the accommodating chamber; It also includes a sealing structure; during the counterclockwise or clockwise rotation of the rotating body relative to the main shell, the simplified axial inflation sealing test device simultaneously meets the following conditions: Condition 1: the second connecting port of the air path channel is connected to the test channel, and the connection between them is sealed by the sealing structure, so that the air inlet / exhaust channel, the air path channel, and the test channel are connected in sequence to form a sealed inflation / inhalation channel; Condition 2: the second connecting port of the air path channel is disconnected from the test channel, and one end of the test channel is closed, and the other end is used to form a sealed airtight test channel with the product to be tested; The sealing structure comprises a first sealing ring arranged at an opening of the test channel adjacent to one side of the accommodating chamber; Or, The sealing structure comprises a sealing sleeve sleeved on the outer periphery of the rotating body, and a through hole is arranged on the side wall of the sealing sleeve. The through holes are the same in number as the test channels and are arranged in a one-to-one correspondence; the through holes are connected to the second connecting port of the gas path channel.

2. The simplified axial inflation sealing test device according to claim 1 is characterized in that: It also includes sealing connectors that are the same in number as the test channels and are arranged in a one-to-one correspondence, the sealing connectors having a first sealing interface and a second sealing interface, the first sealing interface being sealedly connected to the opening of the test channel on the side away from the accommodating chamber, and the second sealing interface being used for sealingly connecting to the inlet / exhaust port of the product to be tested; when one port of the test channel is closed, the other port thereof is connected to the product to be tested through the sealing connector to form the airtight test channel; the product to be tested is a non-sealed product.

3. The simplified axial inflation sealing test device according to claim 1 is characterized in that: It also includes test fixtures with the same number as the test channels and arranged one-to-one, the test fixture including a test fixture body, a test cavity being arranged on the test fixture body, and the test cavity being connected with the test channel; when one port of the test channel is closed, the other port thereof is connected with the test cavity for placing the product to be tested to form the airtight test channel; the product to be tested is a sealed product.

4. The simplified axial inflation sealing test device according to claim 3 is characterized in that: A second sealing ring is arranged at the opening of the test cavity adjacent to one side of the accommodating chamber.

5. The simplified axial inflation sealing test device according to claim 1 is characterized in that: The rotating body also includes a rotating shaft extending axially outward from the center of the rotating body; a driving mechanism is also provided on the main shell, and the output shaft of the driving mechanism is fixedly connected to the rotating shaft. The driving mechanism drives the rotating shaft to rotate, and the rotating shaft then drives the rotating body to rotate clockwise or counterclockwise.

6. The simplified axial inflation sealing test device according to claim 1 is characterized in that: Also included is a pressure sensor for detecting the air pressure in the air-tightness test channel.

7. The simplified axial inflation sealing test device according to claim 1 is characterized in that: An inlet / exhaust channel is axially arranged at the center of the rotating body; N air passages are evenly arranged radially on the same radial plane of the rotating body, N≥2; an angle a is formed between every two adjacent air passages, a=360° / N; the number of the air passages is the same as the number of the test channels and is arranged one-to-one.

8. The simplified axial inflation sealing test device according to claim 3 is characterized in that: The simplified axial inflatable sealing test device comprises more than two groups of test gas path structures, wherein the test gas path structure is composed of a gas path channel, a test channel, and a test cavity; the test gas path structure satisfies any of the following test methods: Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the seal product to be tested, and the other group is used to test the standard seal product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtightness test channel, forming a pressure difference comparison gas path; Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard seals, and the remaining gas path structures are used to test the seals to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel; Test method three: All test gas path structures are used to test the sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

9. The simplified axial inflation sealing test device according to claim 2, characterized in that: The simplified axial inflation sealing test device comprises more than two groups of test gas path structures, and the test gas path structure consists of a gas path channel, a test channel, and a sealing connector; The test gas path structure meets any of the following test methods: Test method 1: Every two groups of the test gas path structures are used in parallel, wherein one group is used to test the non-sealed product to be tested, and the other group is used to test the standard non-sealed product. Both groups of the test gas path structures are provided with a pressure sensor for detecting the air pressure in the airtight test channel, forming a pressure difference comparison gas path; Test method 2: Among all the test gas path structures, one group of test gas path structures is used to test standard non-sealed products, and the remaining gas path structures are used to test non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the airtight test channel; Test method three: All test gas path structures are used to test the non-sealed products to be tested; each group of gas path structures is provided with a pressure sensor for detecting the air pressure in the air tightness test channel.

10. The simplified axial inflation sealing test device according to claim 8 or 9, characterized in that: A differential pressure sensor is also arranged between every two groups of pressure sensors of the test gas path structure.

11. The simplified axial inflation sealing test device according to claim 1, characterized in that: It also includes an air source device connected to the inlet / exhaust port of the inlet / exhaust channel; the air source device is a vacuum pumping device or a charging / inhaling pressurizing device.

12. The simplified axial inflation sealing test device according to claim 1, characterized in that: The main housing is a split structure, which includes more than two sub-housings, and the sub-housings are fixedly connected in a detachable manner.

13. The simplified axial inflation sealing test device according to claim 1, characterized in that: The shape of the accommodating chamber is circular, and correspondingly, the shape of the rotating body is circular.

14. A testing method for the simplified axial inflation sealing testing device according to claim 1, characterized in that: The following steps are involved: 1) Single non-sealed product testing steps: 1-1) Preparation step: seal the non-sealed product to be tested with the test channel through a sealing connector, and connect the air source device with the inlet / exhaust port of the inlet / exhaust channel; 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested, after a preset time or after reaching a preset pressure, the pressure value is recorded as P1, and pressurizing or vacuuming is stopped; 1-3) Air tightness test step: Continue to drive the rotating body or the main housing to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel, and one port of the test channel is closed, and the other port is connected to the non-sealed product to be tested through a sealing connector to form a sealed air tightness test channel; After the preset pressure holding time, the pressure value in the test chamber is detected and recorded as P2; the pressure difference between P2 and P1 is compared. If the pressure difference exceeds the specified range, the non-sealed product to be tested is judged as an unqualified product for airtightness; If the pressure difference is within the specified range, the non-sealed product to be tested is judged to be a qualified product for airtightness.

15. A testing method for the simplified axial inflation sealing testing device according to claim 1, characterized in that: The following steps are involved: Comparative test steps for double non-sealed products: Preparation steps: Seal and connect the non-sealed product to be tested and the standard non-sealed product to a test channel through a sealing connector respectively, and connect the two air source devices to the two inlet / exhaust channels respectively; adopt the same test steps for the non-sealed product to be tested and the standard non-sealed product; Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connection port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel, and the sealing connector are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the non-sealed product to be tested and the standard non-sealed product respectively, and stopping pressurizing or vacuuming after a preset time or after a preset pressure is reached; Air tightness test steps: continue to drive the rotating body or the main housing to rotate in the same direction by a preset angle, the second connection port of the air path channel is disconnected from the test channel by displacement, and one port of the test channel is closed, and the other port thereof is connected to the non-sealed product to be tested or the standard non-sealed product through a sealing connector to form a sealed air tightness test channel; After the preset pressure holding time, the pressure values ​​in the two airtightness test channels are detected respectively, and the pressure difference in the two airtightness test channels is compared. If the pressure difference exceeds the specified range, the non-sealed product to be tested is judged as an airtight unqualified product; If the pressure difference is within the specified range, the non-sealed product to be tested is judged to be a qualified product for airtightness.

16. The testing method of the simplified axial inflation sealing testing device according to claim 15, characterized in that: A differential pressure sensor is also arranged between the pressure sensors of the two groups of gas path structures, and the pressure difference in the two air tightness test channels is detected by the differential pressure sensor.

17. A testing method for the simplified axial inflation sealing testing device according to claim 1, characterized in that: The following steps are involved: 1) Single seal product test steps: 1-1) Preparation steps: Place the seal to be tested into the test chamber and connect the air source device to the inlet / exhaust channel; 1-2) Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the gas path channel is connected to the test channel, so that the inlet / exhaust channel, the gas path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing or vacuuming the sealed product to be tested, after a preset time or after reaching a preset pressure, recording the pressure value as P3, and stopping pressurizing or vacuuming; 1-3) Small leak test step: Continue to drive the rotating body or the main housing to rotate in the same direction by a preset angle, the first connection port of the gas path channel is disconnected from the inlet / exhaust channel, the second connection port is disconnected from the test channel, and the test channels are closed, so that the test channel is connected to the test cavity to form a sealed small leak test channel; After the preset pressure holding time, the pressure value in the test chamber is detected and recorded as P4; the pressure difference between P4 and P3 is compared. If the pressure difference exceeds the specified range, the seal to be tested is judged to be a small leak unqualified product; If the pressure difference is within the specified range, the sealed product to be tested is judged to be a qualified product with small leakage.

18. A testing method for the simplified axial inflation sealing testing device according to claim 1, characterized in that: The following steps are involved: Double seal product comparison test steps: Equipment preparation steps: Place the seal to be tested and the standard seal into two test chambers respectively, and connect the air source device to the inlet / exhaust channel; use the same test steps for the seal to be tested and the standard seal; Inflating / inhaling step: driving the rotating body or the main shell to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air path channel is connected to the test channel, so that the air inlet / exhaust channel, the air path channel, the test channel and the test chamber are connected in sequence to form a sealed inflation / inhalation channel; pressurizing / vacuuming the sealed product to be tested and the standard sealed product respectively, and stopping pressurizing / vacuuming after a preset time or when a preset pressure is reached; Small leak test step: continue to drive the rotating body or the main shell to rotate in the same direction by a preset angle, the second connection port of the gas path channel is disconnected from the test channel, and the test channels are closed, so that the test channel is connected to the test cavity to form a sealed small leak test channel; After the preset pressure holding time, the pressure difference in the two test chambers is compared. If the pressure difference exceeds the specified range, the seal to be tested is judged to be a small leak unqualified product; If the pressure difference is within the specified range, the sealed product to be tested is judged to be a qualified product with small leakage.

19. The testing method of the simplified axial inflation sealing testing device according to claim 18, characterized in that: The pressure difference between the two test chambers is detected by the pressure difference sensor.

20. A method for processing the simplified axial inflation sealing test device according to claim 1, characterized in that: The following steps are involved: The main shell processing step includes: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into two or more sub-shells; processing a test channel on the sub-shells, and processing an annular sealing groove at the opening of the test channel adjacent to one side of the receiving chamber; Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body; Assembly steps: install a sealing ring in the sealing groove of each test channel, then assemble more than two sub-shells in a detachable fixed connection to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

21. A method for manufacturing the simplified axial inflation sealing test device according to claim 1, comprising the following steps: Main shell processing steps: providing a main shell substrate, processing a receiving chamber on the main shell substrate; then cutting the main shell substrate at a position corresponding to the receiving chamber to divide the main shell substrate into more than two sub-shells; processing a test channel on the sub-shells; Rotating body processing step: providing a rotating body substrate, processing an axial inlet / exhaust channel in the rotating body substrate, and processing at least one gas path channel radially on the same radial plane of the rotating body substrate to obtain the rotating body; Assembly steps: install a sealing sleeve on the outer periphery of the rotating body, assemble two or more sub-shells in a detachable fixed connection manner to form a main shell, and install the rotating body in the accommodating chamber of the main shell.

Images