Air tightness detection device

Abstract

The utility model provides an air tightness detection device, which belongs to the technical field of medical instruments and comprises a bottom plate, a material pushing mechanism is arranged on the bottom plate, a detection mechanism is connected onto the material pushing mechanism in a sliding manner, a position correcting mechanism is arranged on one side, close to the detection mechanism, of the bottom plate, and the position correcting mechanism is matched with the detection mechanism for use. The material pushing mechanism, the detection mechanism and the position correcting mechanism are used in cooperation, the position correcting mechanism clamps and fixes the medical pipeline, the material pushing mechanism pushes the detection mechanism to move forwards to be connected with the medical pipeline, and then the detection mechanism blocks and ventilates the medical pipeline. The air tightness of the medical pipeline is judged according to the pressure value variation of the gas in the medical pipeline detected by the analog quantity pressure sensor, the overall structure is simple, the production cost is low, the application range is large, the slight air leakage phenomenon can be detected, the detection result is accurate, the detection precision is high, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an airtightness detection device. Background Technique

[0002] Medical airtightness detection devices are equipment that use pressure or vacuum principles to perform non-destructive airtightness detection on medical device containers of various shapes. The airtightness of medical devices is crucial for ensuring their performance and safety. First of all, good airtightness can prevent potential pollutants such as microorganisms, dust, and moisture from entering the device interior, which is crucial for the medical environment because these pollutants may cause infections or have a negative impact on the device's performance. Secondly, for medical devices involving pressure or gas flow, such as ventilators and sputum suction machines, good airtightness can ensure the normal operation and precise control of the devices. Therefore, medical airtightness detection devices have received much attention during the production process of medical device containers.

[0003] The Chinese utility model patent with the authorization announcement number CN218725115U discloses a medical pipeline airtightness detection device, including a material supporting mechanism, a moving mechanism, a material pushing and detecting mechanism, a lower alignment and an upper alignment. Through the coordinated actions of the material supporting mechanism, the moving mechanism, the material pushing and detecting mechanism, the lower alignment and the upper alignment, the airtightness of the medical pipeline is detected by means of wrapping and sealing. The detection result is accurate, the detection accuracy is high, and the detection efficiency is high. However, the structure of this airtightness detection device is relatively complex, resulting in high production costs and being not suitable for small medical device manufacturers to use, and its application range is limited. Based on the above technical problems, this application has developed a new medical airtightness detection device. Summary of the Utility Model

[0004] The purpose of this application is to provide an airtightness detection device, aiming to solve the technical problems of the existing medical airtightness detection devices, such as complex structure, high production cost, and limited application range.

[0005] This application embodiment provides an airtightness detection device, including a bottom plate. A material pushing mechanism is provided on the bottom plate. A detection mechanism is slidably connected to the material pushing mechanism. A positioning mechanism is provided on one side of the bottom plate close to the detection mechanism, and the positioning mechanism is used in cooperation with the detection mechanism.

[0006] In one embodiment, the material pushing mechanism is provided with a slide rail, and the slide rail is arranged on the bottom plate; the detection mechanism is provided with a slider top plate, and a slider is provided at the bottom of the slider top plate. The slider is slidably connected to the slide rail, and the detection mechanism is slidably connected to the material pushing mechanism through the slider and the slide rail.

[0007] In one embodiment, a cylinder is further provided on the bottom plate, and a piston rod of the cylinder is connected to the slider top plate.

[0008] In one embodiment, the detection mechanism is further provided with a plurality of pressure reducing valves, the pressure reducing valves are arranged on the bottom plate, and the pressure reducing valves are connected to a gas source through air pipes.

[0009] In one embodiment, the detection mechanism is further provided with a plurality of solenoid valves, analog pressure sensors and air detection sleeves. The solenoid valves, the analog pressure sensors and the air detection sleeves are all arranged on the slider top plate. The pressure reducing valves, the solenoid valves, the analog pressure sensors and the air detection sleeves are sequentially connected through air pipes.

[0010] In one embodiment, an axial through hole is provided in the air detection sleeve, a pressing shaft is provided in the axial through hole, and a retaining ring is provided on the pressing shaft; an air inlet is provided on the retaining ring, one end of the air inlet is communicated with the analog pressure sensor through an air pipe, an air outlet is provided at one end of the pressing shaft, and the air inlet is communicated with the air outlet.

[0011] In one embodiment, the detection mechanism is further provided with a plurality of pressing cylinders, the pressing cylinders are arranged on the slider top plate, and a piston rod of the pressing cylinder is connected to the pressing shaft.

[0012] In one embodiment, the number of the pressure reducing valves, the solenoid valves, the analog pressure sensors, the air detection sleeves and the pressing cylinders is the same.

[0013] In one embodiment, the positioning mechanism is provided with a positioning vertical plate, and the positioning vertical plate is arranged on the bottom plate; a lower positioning cylinder seat plate is provided at the bottom end of the positioning vertical plate, a lower positioning cylinder is provided on the lower positioning cylinder seat plate, and a lower positioning fork is connected to a piston rod of the lower positioning cylinder; an upper positioning seat plate is provided at the top end of the positioning vertical plate, an upper positioning cylinder is provided on the upper positioning seat plate, the upper positioning cylinder is arranged opposite to the lower positioning cylinder, and an upper positioning fork is connected to a piston rod of the upper positioning cylinder; the upper positioning fork and the lower positioning fork are used in cooperation.

[0014] In one embodiment, the upper positioning fork and the lower positioning fork are used in cooperation through a mortise and tenon structure.

[0015] The utility model provides an airtightness detection device. Compared with the prior art, its beneficial effects are as follows: By setting up a material pushing mechanism, a detection mechanism and a positioning mechanism to cooperate with each other, the positioning mechanism clamps and fixes the medical pipeline. The material pushing mechanism pushes the detection mechanism to move forward and connect with the medical pipeline. Then, the detection mechanism blocks and ventilates the medical pipeline, and judges the airtightness of the medical pipeline through the change amount of the pressure value of the gas in the medical pipeline detected by the analog pressure sensor. The overall structure is simple, the production cost is low, and the application range is wide; By using the change amount of the pressure value to judge the airtightness of the medical pipeline, the phenomenon of slight air leakage can be detected, the detection result is accurate, and the detection accuracy is high. The structure of the utility model is simple, the production cost is low, the application range is wide, the detection accuracy is high, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an airtightness detection device provided by an embodiment of the present application;

[0018] Figure 2 It is Figure 1 an exploded structural diagram of the airtightness detection device shown;

[0019] Figure 3 It is Figure 1 a schematic structural diagram of the material pushing mechanism of the airtightness detection device shown;

[0020] Figure 4 It is Figure 1 a schematic structural diagram of the detection mechanism of the airtightness detection device shown;

[0021] Figure 5 It is Figure 4 a partially enlarged structural diagram of the detection mechanism of the airtightness detection device shown;

[0022] Figure 6 It is Figure 4 a partially enlarged structural diagram of the air detection sleeve of the airtightness detection device shown;

[0023] Figure 7 It is Figure 1 a schematic structural diagram of the positioning mechanism of the airtightness detection device shown.

[0024] Explanation of symbols in the figure:

[0025] 1. Base plate; 101. Transverse moving support plate; 102. Transverse moving base plate;

[0026] 2. Pushing mechanism; 201. Slide rail; 202. Cylinder; 203. Cylinder seat plate; 204. Limit buffer; 205. Limit plate;

[0027] 3. Detection mechanism; 301. Slide block top plate; 302. Slide block; 303. Pressure reducing valve; 304. Solenoid valve; 305. Analog pressure sensor; 306. Air detection sleeve; 307. Axial through hole; 308. Pressing shaft; 309. Retaining ring; 310. Air inlet; 311. Pressing cylinder; 312. Pressure reducing valve seat plate; 313. Solenoid valve support plate; 314. Solenoid valve seat plate; 315. Sensor support plate; 316. Detection adjustment plate; 317. Detection vertical plate; 318. Detection fixing plate; 319. Detection support plate; 320. Pressing cylinder seat plate; 321. Detection limit plate; 322. Fixing wire; 323. Air outlet;

[0028] 4. Alignment mechanism; 401. Alignment vertical plate; 402. Lower alignment cylinder seat plate; 403. Lower alignment cylinder; 404. Lower alignment fork; 405. Upper alignment seat plate; 406. Upper alignment cylinder; 407. Upper alignment fork; 408. Lower alignment seat plate; 409. Lower alignment cylinder support plate; 410. Lower alignment cylinder connecting plate; 411. Lower alignment guide shaft; 412. Lower alignment fork groove; 413. Lower alignment fork tenon; 414. Upper alignment cylinder connecting plate; 415. Upper alignment guide shaft; 416. Upper alignment fork groove; 417. Upper alignment fork tenon. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0030] It should be noted that when an element is referred to as being "fixed" or "arranged" with another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" with another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationships indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and should not be construed as indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0032] Please refer to Figure 1 , which is a schematic structural diagram of an airtightness detection device provided by an embodiment of the present application. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0033] In one embodiment, please combine Figure 2 , an airtightness detection device for detecting the airtightness of a medical pipeline with a two-way connection at one end and a drip funnel at the other end, including a bottom plate 1. A feeding mechanism 2 is provided on the bottom plate 1. A detection mechanism 3 is slidably connected to the feeding mechanism 2. A positioning mechanism 4 is provided on one side of the bottom plate 1 close to the detection mechanism 3, and the positioning mechanism 4 is used in cooperation with the detection mechanism 3. By setting the feeding mechanism 2, the detection mechanism 3 and the positioning mechanism 4 to be used in cooperation, the positioning mechanism 4 clamps and fixes the medical pipeline, the feeding mechanism 2 pushes the detection mechanism 3 to move forward to be connected with the medical pipeline, and then the detection mechanism 3 blocks and ventilates the medical pipeline, and judges the airtightness of the medical pipeline through the change amount of the pressure value of the gas in the medical pipeline. The overall structure is simple, the production cost is low, and the application range is wide.

[0034] Specifically, please refer to Figure 3 , a transverse moving support plate 101 is provided on the bottom plate 1, a transverse moving bottom plate 102 is provided on the transverse moving support plate 101, and the feeding mechanism 2 is arranged on the transverse moving bottom plate 102.

[0035] Please refer to Figure 3 - Figure 4 , the feeding mechanism 2 is provided with a slide rail 201, and the slide rail 201 is arranged on the transverse moving bottom plate 102; the detection mechanism 3 is provided with a slider top plate 301, a slider 302 is provided at the bottom of the slider top plate 301, and the slider 302 is slidably connected to the slide rail 201. The detection mechanism 3 is slidably connected to the feeding mechanism 2 through the slider 302 and the slide rail 201. A cylinder seat plate 203 is further provided on the transverse moving bottom plate 102, a cylinder 202 is provided on the cylinder seat plate 203, and the piston rod of the cylinder 202 is connected to the slider top plate 301, and the cylinder 202 drives the slider top plate 301 to move back and forth. A limit buffer 204 and a limit plate 205 are further provided on the transverse moving bottom plate 102 for limiting the slider top plate 301.

[0036] Please refer toFigure 3 - Figure 4 , the testing mechanism 3 is provided with a number of pressure reducing valves 303, solenoid valves 304, analog pressure sensors 305 and air inspection sleeves 306. A pressure reducing valve seat plate 312 is provided on the bottom plate 1, and the pressure reducing valve 303 is arranged on the pressure reducing valve seat plate 312. The pressure reducing valve 303 is connected to the air source through an air pipe. An electromagnetic valve support plate 313 is provided on the slider top plate 301. An electromagnetic valve seat plate 314 is provided on the electromagnetic valve support plate 313, and the solenoid valve 304 is arranged on the electromagnetic valve seat plate 314. A sensor support plate 315 is also provided on the electromagnetic valve support plate 313, and the analog pressure sensor 305 is arranged on the sensor support plate 315. A detection adjustment plate 316 is also provided on the slider top plate 301. A detection vertical plate 317 is provided on the detection adjustment plate 316. A detection fixing plate 318 is provided on the detection vertical plate 317. A detection support plate 319 is provided on the detection fixing plate 318, and the air inspection sleeve 306 is arranged on the detection support plate 319. The pressure reducing valve 303, the solenoid valve 304, the analog pressure sensor 305 and the air inspection sleeve 306 are sequentially connected through air pipes. In this embodiment, the detection adjustment plate 316 is bolted to the slider top plate 301, and the left and right positions of the air inspection sleeve 306 can be adjusted by adjusting the detection adjustment plate 316.

[0037] Please refer to Fig. 2, Figure 5 - Figure 6 , an axial through hole 307 is provided in the air inspection sleeve 306. The axial through hole 307 faces the centering mechanism 4. A pressing shaft 308 is provided in the axial through hole 307, and a retaining ring 309 is provided on the pressing shaft 308. An air inlet 310 is provided on the retaining ring 309. One end of the air inlet 310 is connected to the analog pressure sensor 305 through an air pipe. An air outlet 323 is provided at one end of the pressing shaft 308, and the air inlet 310 is communicated with the air outlet 323. The gas provided by the air source sequentially passes through the pressure reducing valve 303, the solenoid valve 304, the analog pressure sensor 305, the air inlet 310 and the air outlet 323.

[0038] Please refer to Figure 4 - Figure 6 , the testing mechanism 3 is also provided with a number of pressing cylinders 311. A pressing cylinder seat plate 320 is also provided on the detection fixing plate 318. The pressing cylinder 311 is arranged on the pressing cylinder seat plate 320. The piston rod of the pressing cylinder 311 is connected to the pressing shaft 308, and the pressing cylinder 311 drives the pressing shaft 308 to move back and forth along the axial through hole 307.

[0039] The pressure reducing valve 303 is used to control the gas flow rate. The solenoid valve 304 is used to control the gas inlet and stop. The pressing cylinder 311 is used to block the medical pipeline. The air detection sleeve 306 is used to ventilate the medical pipeline. The analog pressure sensor 305 is used to detect the change in the gas pressure value inside the medical pipeline. The analog pressure sensor 305 is electrically connected to the control system. During the detection process, the analog pressure sensor 305 detects the gas pressure value inside the medical pipeline and feeds it back to the control system. The control system calculates the change in the pressure value based on the fed-back pressure value. The staff judges the airtightness of the medical pipeline according to the change in the pressure value displayed on the control system. When in use, one end of the two-way connector is inserted into the axial through hole 307. The pressing cylinder 311 drives the pressing shaft 308 to move forward along the axial through hole 307 to block the port of the two-way connector. Then the solenoid valve 304 is opened to control the gas inlet. The gas provided by the gas source passes through the pressure reducing valve 303, the solenoid valve 304, the analog pressure sensor 305, the air inlet 310, the air outlet 323, enters the two-way connector and then enters the medical pipeline. As the gas is introduced, the pressure value gradually increases. When the pressure value reaches the set value, the solenoid valve 304 controls the gas to stop flowing in. After maintaining the pressure for a period of time, the airtightness of the medical pipeline is judged according to the change in the pressure value detected by the analog pressure sensor 305.

[0040] Please refer to Figure 4 - Figure 6 , a detection limit plate 321 is also provided on the detection support plate 319, and a fixing wire 322 is also provided on the pressing shaft 308. The fixing wire 322 and the detection limit plate 321 are used in cooperation to limit the pressing shaft 308. The retaining ring 309 also has a limiting function. When the pressing cylinder 311 drives the pressing shaft 308 to move forward along the axial through hole 307 until the fixing wire 322 touches the detection limit plate 321, the movement stops; when the pressing cylinder 311 drives the pressing shaft 308 to move backward along the axial through hole 307 until the retaining ring 309 touches the detection support plate 319, the movement stops.

[0041] Please refer to Figure 3 - Figure 4 , the number of the pressure reducing valve 303, the solenoid valve 304, the analog pressure sensor 305, the air detection sleeve 306 and the pressing cylinder 311 is the same and they correspond one by one.

[0042] Please refer to Figure 7, the centering mechanism 4 is provided with a centering vertical plate 401, and the centering vertical plate 401 is arranged on the bottom plate 1; a lower centering seat plate 408 is provided at the bottom end of the centering vertical plate 401, a lower centering cylinder support plate 409 is provided on the lower centering seat plate 408, a lower centering cylinder seat plate 402 is provided on the lower centering cylinder support plate 409, a lower centering cylinder 403 is provided on the lower centering cylinder seat plate 402, the piston rod of the lower centering cylinder 403 passes through the lower centering cylinder seat plate 402 and is connected with a lower centering cylinder connecting plate 410, the lower centering cylinder connecting plate 410 is located above the lower centering cylinder seat plate 402, and a lower centering fork 404 is connected to the lower centering cylinder connecting plate 410.

[0043] A lower centering guide shaft 411 is also slidably connected to the lower centering cylinder seat plate 402, the other end of the lower centering guide shaft 411 passes through the lower centering cylinder seat plate 402 and is connected to the lower centering cylinder connecting plate 410, and the lower centering guide shaft 411 plays a guiding role.

[0044] Please refer to Figure 7 , an upper centering seat plate 405 is provided at the top end of the centering vertical plate 401, an upper centering cylinder 406 is provided on the upper centering seat plate 405, the upper centering cylinder 406 is arranged opposite to the lower centering cylinder 403, an upper centering cylinder connecting plate 414 is connected to the piston rod of the upper centering cylinder 406, the upper centering cylinder connecting plate 414 is located below the upper centering seat plate 405, an upper centering fork 407 is connected to the upper centering cylinder connecting plate 414, and the upper centering fork 407 is used in cooperation with the lower centering fork 404. The lower centering cylinder 403 and the upper centering cylinder 406 simultaneously drive the lower centering fork 404 and the upper centering fork 407 to move towards each other to clamp and fix the tee on the medical pipeline.

[0045] An upper centering guide shaft 415 is also slidably connected to the upper centering seat plate 405, the other end of the upper centering guide shaft 415 is connected to the upper centering cylinder connecting plate 414, and the upper centering guide shaft 415 also plays a guiding role.

[0046] Please refer to Figure 7 , a lower centering fork groove 412 and a lower centering fork tenon 413 are provided on the lower centering fork 404, an upper centering fork groove 416 and an upper centering fork tenon 417 are provided on the upper centering fork 407, and the upper centering fork 407 and the lower centering fork 404 are used in cooperation through a mortise and tenon structure to clamp and fix the tee on the medical pipeline.

[0047] The following combines Figure 1 - Figure 7 , and the working process of an airtightness detection device of the present application is described as follows:

[0048] During use, first, the lower centering cylinder 403 and the upper centering cylinder 406 simultaneously drive the lower centering fork 404 and the upper centering fork 407 to move towards each other to clamp and fix the tee on the medical pipeline.

[0049] Then, the air cylinder 202 drives the slider top plate 301 to move forward, driving the air inspection sleeve 306 thereon to move forward until the slider top plate 301 touches the limit buffer 204 and the movement stops. At this time, one end of the two-way connection is inserted into the axial through hole 307.

[0050] Subsequently, the pressing air cylinder 311 drives the pressing shaft 308 to move forward along the axial through hole 307 until the fixing wire 322 contacts the detection limit plate 321 and the movement stops. At this time, the pressing shaft 308 blocks the port of the two-way connection. The solenoid valve 304 is opened to control the gas to pass through. The gas provided by the gas source passes through the pressure reducing valve 303, the solenoid valve 304, the analog pressure sensor 305, the air inlet 310, the air outlet 323 in sequence, enters the two-way connection and then enters the medical pipeline. As the gas passes through, the pressure value gradually increases. When the pressure value reaches the set value, the solenoid valve 304 controls the gas to stop passing through. After maintaining the pressure for a period of time, the analog pressure sensor 305 detects the pressure value of the gas in the medical pipeline and feeds it back to the control system. The control system calculates the change amount of the pressure value based on the fed-back pressure value, thereby judging the airtightness of the medical pipeline.

[0051] After the airtightness detection is completed, the pressing air cylinder 311 drives the pressing shaft 308 to move backward along the axial through hole 307 until the retaining ring 309 touches the detection support plate 319 and the movement stops; at the same time, the air cylinder 202 drives the slider top plate 301 to move backward until the slider top plate 301 touches the limit plate 205 and the movement stops; at the same time, the lower positioning air cylinder 403 and the upper positioning air cylinder 406 drive the lower positioning fork 404 and the upper positioning fork 407 to move away from each other and return to their original positions. Each component returns to the initial position of the action, waiting for the next airtightness detection.

[0052] The utility model provides an airtightness detection device. By setting the material pushing mechanism 2, the detection mechanism 3 and the positioning mechanism 4 to cooperate with each other, the positioning mechanism 4 clamps and fixes the medical pipeline. The material pushing mechanism 2 pushes the detection mechanism 3 to move forward to be connected with the medical pipeline. Then, the detection mechanism 3 blocks and ventilates the medical pipeline. The airtightness of the medical pipeline is judged by the change amount of the pressure value of the gas in the medical pipeline detected by the analog pressure sensor 305. The overall structure is simple, the production cost is low, and the application range is wide; by using the change amount of the pressure value to judge the airtightness of the medical pipeline, the phenomenon of slight air leakage can be detected, the detection result is accurate, and the detection accuracy is high. The utility model has a simple structure, low production cost, wide application range, high detection accuracy and high practicability, and can be widely applied to the technical field of medical devices.

[0053] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0054] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included in the protection scope of this application.

Claims

1. An airtightness detection device, comprising a base plate (1), characterized in that: The base plate (1) is provided with a material pushing mechanism (2), the material pushing mechanism (2) is slidably connected with a detection mechanism (3), and a positioning mechanism (4) is provided on a side of the base plate (1) close to the detection mechanism (3), and the positioning mechanism (4) is used in conjunction with the detection mechanism (3).

2. The airtightness detection device according to claim 1, characterized in that: The pushing mechanism (2) is provided with a slide rail (201), and the slide rail (201) is arranged on the bottom plate (1); the detection mechanism (3) is provided with a slider top plate (301), and a slider (302) is provided at the bottom of the slider top plate (301), and the slider (302) is slidably connected to the slide rail (201); the detection mechanism (3) is slidably connected to the pushing mechanism (2) through the slider (302) and the slide rail (201).

3. The airtightness detection device according to claim 2, characterized in that: A cylinder (202) is also provided on the bottom plate (1), and a piston rod of the cylinder (202) is connected to the slider top plate (301).

4. The airtightness detection device according to claim 2, characterized in that: The detection mechanism (3) is also provided with a plurality of pressure reducing valves (303), wherein the pressure reducing valves (303) are arranged on the bottom plate (1), and the pressure reducing valves (303) are connected to an air source via an air pipe.

5. The airtightness detection device according to claim 4, characterized in that: The detection mechanism (3) is further provided with a plurality of solenoid valves (304), analog pressure sensors (305) and gas detection sleeves (306); the solenoid valves (304), the analog pressure sensors (305) and the gas detection sleeves (306) are all arranged on the slider top plate (301); the pressure reducing valve (303), the solenoid valve (304), the analog pressure sensor (305) and the gas detection sleeves (306) are connected in sequence through air pipes.

6. The airtightness detection device according to claim 5, characterized in that: An axial through hole (307) is provided in the air inspection sleeve (306), a clamping shaft (308) is provided in the axial through hole (307), and a retaining ring (309) is provided on the clamping shaft (308); an air inlet (310) is provided on the retaining ring (309), one end of the air inlet (310) is connected to the analog pressure sensor (305) through an air pipe, and an air outlet (323) is provided at one end of the clamping shaft (308), and the air inlet (310) is connected to the air outlet (323).

7. The airtightness detection device according to claim 6, characterized in that: The detection mechanism (3) is also provided with a plurality of clamping cylinders (311), wherein the clamping cylinders (311) are arranged on the slider top plate (301), and the piston rods of the clamping cylinders (311) are connected to the clamping shaft (308).

8. The airtightness detection device according to claim 7, characterized in that: The number of the pressure reducing valve (303), the solenoid valve (304), the analog pressure sensor (305), the gas inspection sleeve (306) and the pressing cylinder (311) is the same.

9. The airtightness detection device according to claim 1, characterized in that: The alignment mechanism (4) is provided with an alignment vertical plate (401), and the alignment vertical plate (401) is arranged on the bottom plate (1); a lower alignment cylinder seat plate (402) is provided at the bottom end of the alignment vertical plate (401), a lower alignment cylinder (403) is provided on the lower alignment cylinder seat plate (402), and a lower alignment fork (404) is connected to the piston rod of the lower alignment cylinder (403); an upper alignment seat plate (405) is provided at the top end of the alignment vertical plate (401), an upper alignment cylinder (406) is provided on the upper alignment seat plate (405), the upper alignment cylinder (406) and the lower alignment cylinder (403) are arranged opposite to each other, and an upper alignment fork (407) is connected to the piston rod of the upper alignment cylinder (406); the upper alignment fork (407) is used in conjunction with the lower alignment fork (404).

10. The airtightness detection device according to claim 9, characterized in that: The upper alignment fork (407) and the lower alignment fork (404) are used in conjunction with each other through a mortise and tenon structure.

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