Air sampling device for security check
By designing a filter cloth structure that is easy to replace and a gas leak monitoring and alarm function, the problem of difficult removal of filter membranes and difficult to detect small-scale leakage in existing security inspection devices is solved, and the stability and accuracy of the detection effect are improved.
Patent Information
- Application Number
- CN202520019037.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2035-01-06
AI Technical Summary
When existing security inspection devices use filter membranes for air filtration, the filter membrane is difficult to remove, resulting in inconvenient replacement, and small-scale leakage is difficult to detect, affecting the detection effect.
An air sampling device for security inspection is designed, adopting a filter cloth structure that is easy to replace, and real-time monitoring and alarming of gas leakage is achieved through a combination of a one-way output tube and a pressure sensor.
It realizes rapid replacement of filter cloth, improves the convenience of use, and ensures the stability and accuracy of detection effects through the leakage alarm function.
Smart Images
Figure CN222481915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety detection, in particular to an air sampling device for security inspection. Background Art
[0002] Currently, when checking and sampling the air content in a public environment, it is necessary to use a security inspection device to detect the air content and use a sampling device to draw the air into the security inspection device.
[0003] However, in actual use, a filter membrane is needed to filter the air. However, the filter membrane needs to be replaced regularly during use. The filter membrane is extremely difficult to remove, resulting in a poor user experience. At the same time, the connecting pipes may leak. However, small-scale leaks are extremely difficult to detect, resulting in gas leaks that may reduce the detection effect of the security inspection device. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides an air sampling device for security inspection, which has the advantages of easy replacement of filter membranes and leakage alarm, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical solutions: an air sampling device for security inspection, comprising a main shell, an indicator light and a fixed collar are fixedly installed on the outer wall of the main shell, a lifting handle is fixedly installed on the top of the main shell, an air suction pump and a detection device are fixedly installed on the inner wall of the main shell, one end of a one-way output pipe is fixedly installed on the output port of the air suction pump, the other end of the one-way output pipe is connected to the detection device, an air outlet pipe is fixedly installed on the outer wall of the detection device, an air suction pipe is fixedly installed on the outer wall of the main shell, a filter cloth is provided on the inner wall of the air suction pipe, and a sliding sleeve on the outer wall of the air suction pipe is fixedly installed. A sleeve is connected, a slot is provided on the top of the sleeve, a circular groove is provided on the bottom of the inner wall of the main shell, a guide rail and a pressure sensor are fixedly installed on the inner wall of the circular groove, a spring 1 is provided on the inner wall of the circular groove, a sliding block is slidably connected to the inner wall of the circular groove, a latch is slidably connected to the inner wall of the fixed ring, a pull rod is fixedly installed on the top of the latch, a spring 2 is provided on the inner wall of the latch, a pressure ring is fixedly installed on the inner wall of the sleeve, a blocking plate is fixedly installed on the inner wall of the suction pipe, the top of the spring 1 is overlapped with the bottom of the sliding block, and the filter cloth is located between the pressure ring and the blocking plate.
[0006] As a preferred technical solution of the utility model, the number of the guide rails is two, and the two guide rails are symmetrically arranged on both sides of the inner wall of the circular groove, and the two guide rails penetrate both sides of the sliding block.
[0007] As a preferred technical solution of the utility model, the diameter of the sliding block is the same as the top diameter of the circular groove, and the sliding block is located at the top of the inner wall of the circular groove.
[0008] As a preferred technical solution of the utility model, the size of the slot is the same as the size of the bottom of the latch, and the slot is located at the bottom of the latch.
[0009] As a preferred technical solution of the utility model, the pressure ring and the blocking piece are of the same size, and the diameters of the pressure ring and the blocking piece are the same as the diameter of the filter cloth.
[0010] As a preferred technical solution of the utility model, a gap is left between the fixed collar and the air intake pipe, and the size of the gap is matched with a side of the sleeve close to the slot.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The air sampling device for security inspection pulls the pull rod upward, which drives the pin to move upward, so that the pin is separated from the inner wall of the slot. At this time, due to the upward movement of the pin, the second spring contracts, so that the fixed relationship of the slot disappears. At this time, the sleeve is pulled outward, so that the sleeve drives the pressure ring to move outward, and the pressure ring is separated from the inner wall of the intake pipe. At this time, the pressure ring and the blocking sheet no longer clamp the edge of the filter cloth. After replacing the filter cloth, the structure can be reset.
[0013] 2. When gas leaks, the air sampling device for security inspection will release gas into the interior of the main shell through the one-way output tube, thereby increasing the air pressure inside the main shell, causing the air pressure on the top of the sliding block to change, and then the sliding block is pushed to the bottom of the circular groove, thereby causing the sliding block to move toward the direction of the pressure sensor, triggering the pressure sensor, and the pressure sensor control indicator light flashes to remind the user to repair. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the filter cloth structure of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the lifting handle of the utility model;
[0018] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;
[0019] Figure 6 For this utility model Figure 4 Enlarged structural diagram at B in the middle.
[0020] In the figure: 1. main shell; 2. indicator light; 3. lifting handle; 4. fixing ring; 5. suction pump; 6. detection device; 7. one-way output pipe; 8. air outlet pipe; 9. filter cloth; 10. sleeve; 11. slot; 12. suction pipe; 13. sliding block; 14. guide rail; 15. pressure sensor; 16. spring 1; 17. circular groove; 18. latch; 19. pull rod; 20. spring 2; 21. blocking plate; 22. pressure ring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1 - Figure 6 , an air sampling device for security inspection, comprising a main shell 1, an indicator light 2 and a fixed collar 4 are fixedly installed on the outer wall of the main shell 1, a lifting handle 3 is fixedly installed on the top of the main shell 1, an air pump 5 and a detection device 6 are fixedly installed on the inner wall of the main shell 1, one end of a one-way output pipe 7 is fixedly installed on the output port of the air pump 5, the other end of the one-way output pipe 7 is connected to the detection device 6, an air outlet pipe 8 is fixedly installed on the outer wall of the detection device 6, an air intake pipe 12 is fixedly installed on the outer wall of the main shell 1, a filter cloth 9 is provided on the inner wall of the air intake pipe 12, a sleeve 10 is slidably sleeved on the outer wall of the air intake pipe 12, a slot 11 is provided on the top of the sleeve 10, a circular groove 17 is provided on the bottom of the inner wall of the main shell 1, and the inner wall of the circular groove 17 is fixedly installed A guide rail 14 and a pressure sensor 15 are fixedly installed, a spring 16 is provided on the inner wall of the circular groove 17, a sliding block 13 is slidably connected to the inner wall of the circular groove 17, a latch 18 is slidably connected to the inner wall of the fixed ring 4, a pull rod 19 is fixedly installed on the top of the latch 18, a spring 20 is provided on the inner wall of the latch 18, a pressure ring 22 is fixedly installed on the inner wall of the sleeve 10, a blocking piece 21 is fixedly installed on the inner wall of the suction pipe 12, the top of the spring 16 overlaps with the bottom of the sliding block 13, and the filter cloth 9 is located between the pressure ring 22 and the blocking piece 21. In the above structure, the pressure sensor 15 and the indicator light 2 are electrically connected, so that after the pressure sensor 15 is triggered, the pressure sensor 15 controls the indicator light 2 to flash, reminding the user of internal gas leakage.
[0023] In a preferred embodiment, the number of guide rails 14 is two, and the two guide rails 14 are symmetrically arranged on both sides of the inner wall of the circular groove 17, and the two guide rails 14 penetrate both sides of the sliding block 13. In the above structure, the two sides of the sliding block 13 are limited by the two guide rails 14, so that the two sides of the sliding block 13 can move on the outer walls of the two guide rails 14, and then the two sides of the sliding block 13 limit the sliding block 13, so that the sliding block 13 cannot be tilted or rotated on the inner wall of the circular groove 17.
[0024] In a preferred embodiment, the diameter of the sliding block 13 is the same as the top diameter of the circular groove 17, and the sliding block 13 is located at the top of the inner wall of the circular groove 17. In the above structure, the top of the circular groove 17 is sealed by the sliding block 13, so that when the air pressure at the top of the sliding block 13 changes, the sliding block 13 is pushed toward the bottom of the circular groove 17, thereby causing the sliding block 13 to move toward the direction of the pressure sensor 15, triggering the pressure sensor 15.
[0025] In a preferred embodiment, the size of the slot 11 is the same as the bottom size of the pin 18, and the slot 11 is located at the bottom of the pin 18. In the above structure, by inserting the pin 18 into the inner wall of the slot 11, the pin 18 fixes the slot 11, and the slot 11 fixes the sleeve 10 to the outer wall of the suction pipe 12.
[0026] In a preferred embodiment, the pressure ring 22 and the blocking sheet 21 are of the same size, and the diameters of the pressure ring 22 and the blocking sheet 21 are the same as the diameter of the filter cloth 9. In the above structure, by putting the sleeve 10 on the outer wall of the intake pipe 12, the sleeve 10 is pushed into the interior of the intake pipe 12. At this time, the pressure ring 22 moves toward the direction of the blocking sheet 21, so that the blocking sheet 21 and the pressure ring 22 clamp the edge of the filter cloth 9.
[0027] In a preferred embodiment, a gap is left between the fixed ring 4 and the intake pipe 12, and the size of the gap is adapted to the side of the sleeve 10 close to the slot 11. In the above structure, the sleeve 10 can be accommodated through the gap between the fixed ring 4 and the intake pipe 12, so that the contact surface between the sleeve 10 and the main shell 1 is sealed by the fixed ring 4 and the intake pipe 12 after the sleeve 10 is fixed.
[0028] Working principle: when using the device, place the device in a public place, start the air suction pump 5, and then make the air suction pump 5 suck air from the direction of the air suction pipe 12, filter the air through the filter cloth 9, and the air passes through the connection between the one-way output pipe 7 and the detection device 6, so that the gas enters the inside of the detection device 6 through the one-way output pipe 7, and the detection device 6 detects the content in the air. When the one-way output pipe 7 leaks, the air pressure inside the main shell 1 increases, and the air pressure at the top of the sliding block 13 changes. At this time, the sliding block 13 is pushed to the bottom of the circular groove 17, and the sliding block 13 moves in the direction of the pressure sensor 15, triggering the pressure sensor 15, and then the pressure sensor 15 operates the indicator light 2, causing the indicator light 2 to flash, reminding the user to repair the gas leak in time. When the filter cloth 9 needs to be replaced , by pulling the pull rod 19 upward, the pull rod 19 drives the pin 18 to move upward, so that the pin 18 is separated from the inner wall of the slot 11. At this time, due to the upward movement of the pin 18, the spring 20 contracts, so that the fixing relationship of the slot 11 disappears. At this time, the sleeve 10 is pulled outward, so that the sleeve 10 drives the pressure ring 22 to move outward, so that the pressure ring 22 is separated from the inner wall of the intake pipe 12. At this time, the pressure ring 22 and the blocking sheet 21 no longer clamp the filter cloth 9, and a new filter cloth 9 is placed on the outer wall of the blocking sheet 21. At this time, the sleeve 10 is sleeved on the outer wall of the intake pipe 12. At this time, the pressure ring 22 enters the inner wall of the intake pipe 12. At this time, the sleeve 10 is pushed in the direction of the intake pipe 12, so that the pressure ring 22 and the blocking sheet 21 clamp the two side edges of the filter cloth 9, so that the filter cloth 9 is fixed between the pressure ring 22 and the blocking sheet 21.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An air sampling device for security inspection, comprising a main housing (1), characterized in that: The outer wall of the main shell (1) is fixedly mounted with an indicator light (2) and a fixed collar (4), the top of the main shell (1) is fixedly mounted with a lifting handle (3), the inner wall of the main shell (1) is fixedly mounted with an air suction pump (5) and a detection device (6), the output port of the air suction pump (5) is fixedly mounted with one end of a one-way output pipe (7), the other end of the one-way output pipe (7) is connected to the detection device (6), the outer wall of the detection device (6) is fixedly mounted with an air outlet pipe (8), the outer wall of the main shell (1) is fixedly mounted with an air suction pipe (12), the inner wall of the air suction pipe (12) is provided with a filter cloth (9), the outer wall of the air suction pipe (12) is slidably sleeved with a sleeve (10), the top of the sleeve (10) is provided with a slot (11), and the inner wall of the main shell (1) is provided with a filter cloth (9). A circular groove (17) is provided at the bottom of the inner wall, a guide rail (14) and a pressure sensor (15) are fixedly installed on the inner wall of the circular groove (17), a spring 1 (16) is provided on the inner wall of the circular groove (17), a sliding block (13) is slidably connected to the inner wall of the circular groove (17), a latch (18) is slidably connected to the inner wall of the fixed ring (4), a pull rod (19) is fixedly installed on the top of the latch (18), a spring 2 (20) is provided on the inner wall of the latch (18), a pressure ring (22) is fixedly installed on the inner wall of the sleeve (10), a blocking plate (21) is fixedly installed on the inner wall of the suction pipe (12), the top of the spring 1 (16) overlaps the bottom of the sliding block (13), and the filter cloth (9) is located between the pressure ring (22) and the blocking plate (21).
2. The air sampling device for security inspection according to claim 1, characterized in that: There are two guide rails (14), and the two guide rails (14) are symmetrically arranged on both sides of the inner wall of the circular groove (17), and the two guide rails (14) penetrate both sides of the sliding block (13).
3. The air sampling device for security inspection according to claim 1, characterized in that: The diameter of the sliding block (13) is the same as the top diameter of the circular groove (17), and the sliding block (13) is located at the top of the inner wall of the circular groove (17).
4. The air sampling device for security inspection according to claim 1, characterized in that: The size of the slot (11) is the same as the size of the bottom of the latch (18), and the slot (11) is located at the bottom of the latch (18).
5. The air sampling device for security inspection according to claim 1, characterized in that: The pressure ring (22) and the blocking sheet (21) are of the same size, and the diameters of the pressure ring (22) and the blocking sheet (21) are the same as the diameter of the filter cloth (9).
6. The air sampling device for security inspection according to claim 1, characterized in that: A gap is left between the fixed collar (4) and the air intake pipe (12), and the size of the gap is adapted to a side of the sleeve (10) close to the slot (11).