A sampling device for detecting methanol in the atmosphere
By designing a sampling device that combines a base, a rotating shaft, a rope reel, and a hydrogen balloon, the limitation of existing devices that can only sample on the ground is overcome. This enables high-altitude multi-location sampling and dust filtration, improving detection accuracy and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA NAT INSPECTION & TESTING HLDG GRP QINGDAO JINGCHENG CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing atmospheric methanol detection and sampling devices can only take samples at ground level, and cannot take samples at different locations at high altitudes. They also cannot filter dust particles in the air, resulting in low accuracy of the detection results.
A sampling device comprising a base, a rotating shaft, a rope reel, and a hydrogen balloon was designed. By coordinating the rope and the base, sampling can be performed at different heights, and dust is filtered through a filter screen to ensure the purity of the collected gas.
It enables precise sampling at different heights, improving the accuracy of test results. The detachable filter effectively filters dust, ensuring the purity of the collected gas. It is easy to operate and has a simple structure.
Smart Images
Figure CN224518269U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of atmospheric methanol detection and sampling technology, specifically relating to a sampling device for detecting methanol in the atmosphere. Background Technology
[0002] The primary purpose of atmospheric methanol detection is to ensure environmental safety, protect human health, and monitor the risk of methanol leaks in industrial production. By monitoring the concentration of methanol in the atmosphere, leaks in industrial production or laboratories can be detected in a timely manner, preventing methanol from spreading into the environment and causing pollution. For example, when methanol is used as a solvent in chemical production, real-time monitoring is required to ensure compliant emissions.
[0003] Atmospheric methanol detection sampling typically uses redistilled distilled water as the absorbent. Gas is drawn into the redistilled distilled water during extraction for absorption and sampling. However, existing sampling devices can only collect samples at ground level and cannot sample different locations at higher altitudes. This limits the sampling operation and makes it difficult to guarantee the accuracy of the detection results. Furthermore, the devices cannot filter out dust particles in the air during sampling. Therefore, we propose a sampling device for atmospheric methanol detection. Utility Model Content
[0004] The purpose of this utility model is to provide a sampling device for detecting methanol in the atmosphere, so as to solve the problems mentioned in the background art, that the existing sampling devices can only take samples at ground level and cannot take samples at different locations at high altitudes, which has certain limitations in sampling operation, makes it difficult to guarantee the accuracy of the detection results after sampling, and cannot filter and remove dust particles in the air during sampling.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for detecting methanol in the atmosphere, comprising a base, with mounting bolts threaded at each of the four corners of the base; a rotating shaft rotatably mounted inside the base; a handle fixedly mounted at one end of the rotating shaft; a positioning rod slidably mounted on the handle; an operating plate fixedly mounted at one end of the positioning rod; several positioning grooves formed on the side of the base; the other end of the positioning rod engaging with the positioning grooves; a rope winding disc fixedly mounted on the outer surface of the rotating shaft; a pull rope wound on the rope winding disc; and a fixedly mounted... A chassis is provided, on which a collection cylinder is detachably mounted. Several fixing ropes are fixedly mounted on the surface of the chassis. A drain pipe and an inlet pipe are installed on the collection cylinder, which contains redistilled distilled water. A collection pump is installed on the surface of the collection cylinder, with the outlet end of the pump extending into the collection cylinder and penetrating into the redistilled distilled water. A filter shell is connected to the inlet end of the pump, and a filter screen is detachably installed inside the filter shell. A hydrogen balloon is fixedly mounted at the top of the fixing ropes, and an air inlet pipe and an air outlet pipe are installed on the hydrogen balloon. One-way solenoid valves are provided on the drain pipe, the inlet pipe, the air inlet pipe, and the air outlet pipe.
[0006] The above-mentioned scheme uses a base in conjunction with a chassis, and utilizes a rotating shaft and rope reel within the base to pull the rope, enabling the rope to be extended and retracted. This, combined with a hydrogen balloon, allows for sampling operations at different heights, ensuring accurate subsequent testing. The overall operation is convenient and the structure is simple. The use of fixing screws and nuts facilitates the installation of the sampling tube. Furthermore, the filter screen effectively filters the sample gas drawn by the sampling pump, preventing dust from entering and providing excellent dust filtration. The filter screen is also removable for easy cleaning.
[0007] In the above scheme, it should be noted that the acquisition pump and the one-way solenoid valve are both electrically connected to an external power supply.
[0008] In a preferred embodiment, an anti-slip pad is attached to the lower surface of the base, and the anti-slip pad has a through hole for the mounting bolt to pass through.
[0009] Using the above method, when fixing the base with mounting bolts, the anti-slip pad can play a role in preventing slippage and improving installation stability.
[0010] In a preferred embodiment, a channel is provided on the handle, and a spring is fixedly installed on the inner wall of the channel. A limit ring is fixedly installed on the outer surface of the positioning rod, and the limit ring is located inside the channel and is fixedly connected to the spring.
[0011] By using the above solution, the positioning rod can be limited by the setting of the limiting ring, which prevents the positioning rod from slipping off the handle. The spring force can drive the positioning rod to quickly insert into the positioning groove, improving the convenience of positioning operation.
[0012] In a preferred embodiment, a number of fixing screws are fixedly installed on the lower surface of the collection tube, and a number of round holes are opened on the chassis. The fixing screws pass through the round holes and are threaded with fixing nuts. The fixing nuts are fitted and arranged on the lower surface of the chassis.
[0013] By using the above solution, and by screwing a fixing screw through the round hole and then tightening a fixing nut, the collection tube can be easily installed. The threaded connection has good stability and is not prone to loosening.
[0014] In a preferred embodiment, a plurality of mounting bolts are threaded onto the filter screen, and the filter screen and the filter housing are detachably connected by the mounting bolts.
[0015] By using the above solution and the two mounting bolts, the filter screen can be easily installed, facilitating subsequent disassembly and assembly.
[0016] In a preferred embodiment, a plurality of alignment strips are fixedly installed on the surface of the filter screen, and a plurality of alignment slots are provided on the inner wall of the filter housing, wherein the alignment strips and alignment slots are used in conjunction.
[0017] By using the above solution, the alignment strip can be inserted into the alignment slot to achieve precise alignment and assembly of the filter screen, improving the ease of assembly and facilitating the screwing in of the second installation bolt.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] This atmospheric methanol detection sampling device uses a base to work with a chassis. The base has a rotating shaft and a rope reel to pull the rope, which can be used to raise and lower the rope. It can then be used with a hydrogen balloon to collect samples at different heights, ensuring the accuracy of subsequent detection. The device is easy to operate and has a simple structure.
[0020] This atmospheric methanol detection sampling device uses a combination of fixing screws and nuts for easy installation of the sampling tube. The filter screen effectively filters the sample gas drawn by the sampling pump, preventing dust from entering and providing excellent dust filtration. The filter screen is also removable for easy cleaning. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the base of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the rotating handle of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the chassis, collection tube, and hydrogen balloon of this utility model;
[0025] Figure 5 This is a schematic diagram of the chassis and collection cylinder of this utility model;
[0026] Figure 6 This is a schematic diagram of the exploded structure of the chassis and collection cylinder of this utility model;
[0027] Figure 7 This is a schematic diagram of the exploded structure of the filter shell and filter screen of this utility model.
[0028] In the diagram: 1. Base; 2. Mounting bolt one; 3. Rotating shaft; 4. Rotating handle; 5. Positioning rod; 6. Operating panel; 7. Rope winding disc; 8. Pull rope; 9. Chassis; 10. Collection tube; 11. Fixing rope; 12. Drain pipe; 13. Inlet pipe; 14. Collection pump; 15. Filter shell; 16. Filter screen; 17. Hydrogen balloon; 18. Air inlet pipe; 19. Air outlet pipe; 20. Anti-slip pad; 21. Limiting ring; 22. Spring; 23. Fixing screw; 24. Fixing nut; 25. Mounting bolt two; 26. Alignment strip. Detailed Implementation
[0029] Please see Figure 1-7This utility model provides a sampling device for detecting methanol in the atmosphere, including a base 1. Mounting bolts 2 are threaded onto each of the four corners of the base 1. A rotating shaft 3 is rotatably mounted inside the base 1. A handle 4 is fixedly mounted on one end of the rotating shaft 3. A positioning rod 5 is slidably mounted on the handle 4. An operating plate 6 is fixedly mounted on one end of the positioning rod 5. Several positioning grooves are provided on the side of the base 1, and the other end of the positioning rod 5 cooperates with the positioning grooves. A rope winding disc 7 is fixedly mounted on the outer surface of the rotating shaft 3. A pull rope 8 is wound on the rope winding disc 7. A base plate 9 is fixedly mounted on the free end of the pull rope 8. A collection tube 10 is detachably mounted on the base plate 9. Several fixing ropes 11 are fixedly installed on the surface. A drain pipe 12 and an inlet pipe 13 are installed on the collection cylinder 10. The collection cylinder 10 contains redistilled distilled water. A collection pump 14 is installed on the surface of the collection cylinder 10. The outlet end of the collection pump 14 extends into the collection cylinder 10 and penetrates into the redistilled distilled water. A filter shell 15 is connected to the inlet end of the collection pump 14. A filter screen 16 is detachably installed inside the filter shell 15. A hydrogen balloon 17 is fixedly installed at the top of the fixing ropes 11. An air inlet pipe 18 and an air outlet pipe 19 are installed on the hydrogen balloon 17. One-way solenoid valves are installed on the drain pipe 12, the inlet pipe 13, the air inlet pipe 18, and the air outlet pipe 19.
[0030] By using the base 1 in conjunction with the chassis 9, and utilizing the rotating shaft 3 and the rope winding disc 7 within the base 1 in conjunction with the pull rope 8, the pull rope 8 can be extended and retracted. This, in turn, is used with the hydrogen balloon 17 to achieve sampling operations at different heights, ensuring the accuracy of subsequent testing. The overall operation is convenient and the structure is simple. The fixing screw 23, in conjunction with the fixing nut 24, facilitates the installation of the sampling cylinder 10. Furthermore, the filter screen 16 filters the sample gas extracted by the sampling pump 14, preventing dust from entering and achieving a good dust filtration effect. The filter screen 16 is also detachable for easy cleaning.
[0031] An anti-slip pad 20 is attached to the lower surface of the base 1. The anti-slip pad 20 has through holes for the mounting bolts 2 to pass through. When the base 1 is fixedly installed using the mounting bolts 2, the anti-slip pad 20 can play an anti-slip role and improve the installation stability.
[0032] A channel is provided on the handle 4, and a spring 22 is fixedly installed on the inner wall of the channel. A limit ring 21 is fixedly installed on the outer surface of the positioning rod 5. The limit ring 21 is located inside the channel and is fixedly connected to the spring 22. The limit ring 21 can limit the positioning rod 5 to prevent it from sliding off the handle 4. The elastic force of the spring 22 can drive the positioning rod 5 to quickly insert into the positioning groove, improving the convenience of positioning operation.
[0033] Several fixing screws 23 are fixedly installed on the lower surface of the collection tube 10. Several round holes are opened on the base 9. The fixing screws 23 pass through the round holes and are threaded with fixing nuts 24. The fixing nuts 24 are attached to the lower surface of the base 9. By using the fixing screws 23 to pass through the round holes and screwing on the fixing nuts 24, the collection tube 10 can be conveniently installed. The threaded connection has good stability and is not easy to loosen.
[0034] The filter screen 16 is threaded with several mounting bolts 25. The filter screen 16 and the filter housing 15 are detachably connected by the mounting bolts 25. By using the mounting bolts 25, the filter screen 16 can be easily installed, which facilitates subsequent disassembly and assembly operations.
[0035] Several alignment strips 26 are fixedly installed on the surface of the filter screen 16, and several alignment slots are opened on the inner wall of the filter shell 15. The alignment strips 26 are used in conjunction with the alignment slots. By inserting the alignment strips 26 into the alignment slots, the filter screen 16 can be precisely aligned and assembled, improving the convenience of the assembly operation and facilitating the screwing in of the installation bolts 25.
[0036] In use, the base 1 is fixed in place using mounting bolt 2. Hydrogen gas is introduced into the hydrogen balloon 17 through the air inlet pipe 18. Pulling the operating plate 6 causes the positioning rod 5 to move out of the positioning slot. At this time, the spring 22 deforms and the handle 4 is unlocked. Rotating the handle 4 drives the rotating shaft 3 to rotate, which in turn drives the rope reel 7 to rotate, thereby releasing the rope 8. The buoyancy of the hydrogen balloon 17 drives the chassis 9 to move upward. After moving to the appropriate height, the operating plate 6 is released, and the elastic force of the spring 22 drives the positioning rod 5 to move and insert into the positioning slot, completing the height lock. Then, the collection pump 14 is started. The collection pump 14 draws gas through the filter shell 15. The filter on the filter shell 15... The filter 16 filters the extracted gas to prevent dust from entering. The filtered gas is then transported into the collection tube 10 and into redistilled water to collect atmospheric methanol. After collection, the control panel 6 is pulled again to unlock the handle 4. The handle 4 is rotated in the opposite direction to retract the pull rope 8, which causes the chassis 9 to move downward. When the collection tube 10 needs to be disassembled, the mounting nut is unscrewed, and the collection tube 10 is pulled upward to disengage the fixing screw 23 from the chassis 9. The collection tube 10 is then removed, and the redistilled water containing methanol is discharged through the drain pipe 12. After testing, the mounting bolt 25 is unscrewed to unlock the filter 16, which is then disassembled for cleaning and maintenance.
Claims
1. A sampling device for the detection of methanol in the atmosphere, characterized in that: The system includes a base (1), with mounting bolts (2) threaded at each of the four corners of the base (1). A rotating shaft (3) is rotatably mounted inside the base (1). A handle (4) is fixedly mounted at one end of the rotating shaft (3). A positioning rod (5) is slidably mounted on the handle (4). An operating plate (6) is fixedly mounted at one end of the positioning rod (5). Several positioning slots are provided on the side of the base (1). The other end of the positioning rod (5) engages with the positioning slots. A rope winding disc (7) is fixedly mounted on the outer surface of the rotating shaft (3). A pull rope (8) is wound on the rope winding disc (7). A base plate (9) is fixedly mounted at the free end of the pull rope (8). A collection tube (10) is detachably mounted on the base plate (9). A [missing information - likely a device or component] is fixedly mounted on the surface of the base plate (9). A number of fixed ropes (11) are provided. A drain pipe (12) and an inlet pipe (13) are installed on the collection tube (10). The collection tube (10) contains redistilled water. A collection pump (14) is installed on the surface of the collection tube (10). The outlet end of the collection pump (14) extends into the collection tube (10) and penetrates into the redistilled water. A filter shell (15) is connected to the inlet end of the collection pump (14). A filter screen (16) is detachably installed inside the filter shell (15). A hydrogen balloon (17) is fixedly installed at the top of the fixed ropes (11). An air inlet pipe (18) and an air outlet pipe (19) are installed on the hydrogen balloon (17). A one-way solenoid valve is provided on the drain pipe (12), the inlet pipe (13), the air inlet pipe (18), and the air outlet pipe (19).
2. The sampling device for detecting methanol in the atmosphere according to claim 1, characterized by: An anti-slip pad (20) is attached to the lower surface of the base (1), and the anti-slip pad (20) has a through hole for the mounting bolt (2) to pass through.
3. The sampling device for detecting methanol in the atmosphere according to claim 1, characterized by: The handle (4) has a channel, and a spring (22) is fixedly installed on the inner wall of the channel. A limit ring (21) is fixedly installed on the outer surface of the positioning rod (5). The limit ring (21) is located inside the channel and is fixedly connected to the spring (22).
4. The sampling device for detecting methanol in the atmosphere according to claim 1, characterized by: The lower surface of the collection tube (10) is fixedly installed with several fixing screws (23), and the chassis (9) has several round holes. The fixing screws (23) pass through the round holes and are threaded with fixing nuts (24). The fixing nuts (24) are attached to the lower surface of the chassis (9).
5. The sampling device for detecting methanol in the atmosphere according to claim 1, characterized by: The filter screen (16) is threaded with several mounting bolts (25), and the filter screen (16) and the filter shell (15) are detachably connected by the mounting bolts (25).
6. The sampling device for detection of methanol in the atmosphere according to claim 1, characterized by: The filter screen (16) has several alignment strips (26) fixedly installed on its surface, and the filter shell (15) has several alignment slots on its inner wall. The alignment strips (26) are used in conjunction with the alignment slots.