Sampling device for methanol detection

Abstract

The invention belongs to the technical field of methanol sampling, and particularly relates to a sampling device for methanol detection, which comprises a mounting part, a sampling mechanism, a spraying mechanism, a heating mechanism and a turbulent flow mechanism, the mounting part comprises a bearing box and a mounting box mounted above the bearing box; the sampling mechanism comprises a draw-off pump and a storage tank, and the draw-off pump is fixedly mounted on the inner wall of the mounting box and is used for extracting methanol and discharging the methanol into the storage tank; the spraying mechanism comprises a storage box, a spraying pump and a spraying plate fixedly mounted on the inner wall of the bearing box, and liquid in the storage box is pumped through the spraying pump and discharged to the spraying plate; the heating mechanism comprises a temporary storage box and a heating plate, the temporary storage box is fixedly installed on the upper end face of the storage box, the temporary storage box is made of a transparent and water-permeable material, and the heating plate is fixedly installed on the outer wall of the storage box; the turbulent flow mechanism comprises a control cylinder, a liquid inlet pipe and a liquid discharge pipe; through cooperation of the structure, health damage caused by the fact that people inhale steam is avoided, and the risk that the steam encounters open fire to cause explosion is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of methanol sampling, in particular to a sampling device for methanol detection. Background Art

[0002] During the methanol production process, to ensure product quality and production safety, the methanol in the storage tank needs to be sampled and tested regularly, especially in large methanol storage tanks. Due to factors such as standing time and temperature stratification, the methanol composition at different depths may vary. Therefore, sampling needs to be carried out at multiple depths to ensure the accuracy of the test results.

[0003] Because large storage tanks are often several meters high, samplers must climb to the top of the tank using ladders or scaffolding. During this process, the tank surface may become slippery due to methanol residue or the damp environment. In addition, the lack of stable protective measures during the climbing process makes it very easy for a fall to occur, which can easily cause casualties. Furthermore, aerial work is significantly affected by environmental factors such as wind and weather, further increasing operational risks. Furthermore, the operating space at the top of some storage tanks is narrow, and when samplers move or adjust the sampling position, they are prone to colliding with tank components due to the limited space, causing secondary safety accidents.

[0004] After the sampling personnel extract methanol from the tank, they need to manually inject it into the collection equipment. Since methanol is highly volatile and there is a lack of a sealed connection structure between the sampling tube and the collection equipment, methanol vapor will directly diffuse into the operating environment during the transfer process. Methanol vapor not only has a pungent odor that damages the human respiratory system, but is also a flammable and explosive gas. When the concentration of methanol vapor in the air reaches a certain threshold, it can easily cause an explosion when exposed to open flames or static electricity, posing a serious threat to surrounding equipment and personnel.

[0005] To this end, the present invention provides a sampling device for methanol detection. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a sampling device for methanol detection according to the present invention comprises a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a flow-disturbing mechanism;

[0008] The installation part includes a carrying box and an installation box installed above the carrying box;

[0009] The sampling mechanism includes an extraction pump and a storage tank. The extraction pump is fixedly installed on the inner wall of the installation box and is used to extract methanol and discharge it into the storage tank.

[0010] The spray mechanism includes a storage box, a spray pump and a spray plate fixedly installed on the inner wall of the carrying box. The liquid in the storage box is extracted by the spray pump and discharged to the spray plate.

[0011] The heating mechanism includes a buffer box and a heating plate. The buffer box is fixedly mounted on the upper end surface of the storage box, and the buffer box is made of transparent and water-permeable material. The heating plate is fixedly mounted on the outer wall of the storage box.

[0012] The flow disturbance mechanism includes a control tube, a liquid inlet pipe and a liquid discharge pipe. The liquid inside the storage box enters the inner cavity of the control tube through the liquid inlet pipe and is then discharged into the cache box through the liquid discharge pipe.

[0013] Preferably, a pressure nozzle is fixedly mounted on the inner wall of the carrying box, a mounting plate is detachably mounted on the outer wall of the carrying box, a guide cylinder is fixedly mounted on the side wall of the mounting plate, one end of the storage tank is slidably plugged into the guide cylinder, and a control cylinder for pressing the storage tank is fixedly mounted on the outer wall of the mounting plate;

[0014] A recovery pump is fixedly installed at the bottom of the storage box, the output end of the recovery pump is connected to the inner cavity of the storage box, and the input end of the recovery pump is connected to the inner cavity of the carrying box.

[0015] Preferably, a slow flow layer is fixedly mounted on the inner wall of the cache box, a storage cylinder is detachably mounted on the inner wall of the cache box, and a filter cylinder is detachably mounted on the inner wall of the storage cylinder;

[0016] The liquid discharge pipe has an input end and two output ends. One of the output ends of the liquid discharge pipe extends to the outer wall of the control cylinder, and the other output end of the liquid discharge pipe extends to the inner cavity of the storage cylinder.

[0017] Preferably, a drive motor is fixedly mounted on the outer wall of the storage box, and an output shaft of the drive motor extends to the inner cavity of the storage box and is fixedly mounted with a control shaft;

[0018] A control plug is slidably mounted on the inner wall of the control cylinder, a guide rod is fixedly mounted on the bottom of the control plug, and a guide frame elastically connected to the guide rod is fixedly mounted on the inner wall of the storage box;

[0019] A pressing cam is fixedly mounted on the radial outer wall of the control shaft, and the radial outer wall of the pressing cam is slidably fitted with the bottom surface of the control plug.

[0020] Preferably, a top pressure cylinder is fixedly mounted on the upper end surface of the control cylinder;

[0021] The inner wall of the storage cylinder is fixedly mounted with a transmission shaft, the inner wall of the storage cylinder is elastically mounted with a transmission sleeve that is sleeved with the transmission shaft, and the pressing cylinder is used to press the transmission sleeve;

[0022] A spiral groove is provided on the radial outer wall of the transmission shaft, and a guide ball is fixedly installed on the inner wall of the transmission sleeve and is in sliding engagement with the spiral groove;

[0023] A scraper plate is fixedly mounted on the radial outer wall of the transmission shaft. The outer wall of the scraper plate is slidably fitted with the inner wall of the filter cartridge, and the side wall of the scraper plate is inclined.

[0024] Preferably, a sliding cylinder is fixedly mounted on the inner wall of the storage box, a connecting rod is slidably mounted on the inner wall of the sliding cylinder, and one end of the connecting rod extends to the inner cavity of the drain pipe;

[0025] The outer wall of the connecting rod is fixedly mounted with a sealing plate and a sealing plug;

[0026] A baffle ring is fixedly installed on the inner wall of the discharge pipe.

[0027] Preferably, a pressure ring is elastically mounted on the radial outer wall of the control shaft, a transmission ring is rotatably mounted on the inner wall of the storage box, a friction ring is fixedly mounted on the inner wall of the transmission ring, and the outer wall of the friction ring is in contact with the outer wall of the pressure ring;

[0028] A transmission groove is provided on the radial outer wall of the transmission ring, a transmission rod is fixedly mounted on the outer wall of the connecting rod, and one end of the transmission rod extends to the inner wall of the transmission groove.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The present invention solves the safety hazards of falling from a high altitude and methanol vapor leakage caused by manual climbing in the existing sampling method by providing a carrying box, a spraying mechanism and a heating mechanism, and achieves the effect of significantly improving operational safety. The electric hose reel can automatically control the unwinding and rewinding of the hose, so that the sampling personnel can flexibly collect methanol samples at different depths without climbing to the top of the large storage tank, and completely avoids accidents such as falling and collision caused by slippery tank bodies, narrow space or environmental factors during the climbing process. The carrying box forms a closed operating space, and the spraying mechanism sprays atomized pure water in the box. Combined with the water temperature increased by the heating mechanism, the activity of water molecules is enhanced, which can quickly and fully merge with and absorb the volatile methanol vapor, effectively preventing the vapor from leaking to the outside, avoiding the health damage caused by people inhaling the vapor, and preventing the risk of explosion caused by the vapor encountering an open flame.

[0031] 2. The present invention solves the problems of low sampling efficiency, waste of resources, inconvenient equipment maintenance and uneven heating by setting up multiple groups of guide cylinders and storage tanks, recovery pumps, filter cylinders, scraping plates and spoiler mechanisms, thereby achieving the effect of improving operational economy and stability. Multiple groups of guide cylinders cooperate with control cylinders to realize the simultaneous collection of multiple samples, thereby improving efficiency. The recovery pump recycles the absorption liquid to reduce waste. The filter cylinders and scraping plates ensure the cleanliness of the liquid. The spoiler mechanism promotes the flow of liquid in the storage box. Combined with the sunlight heating of the cache box, the liquid is heated evenly, thereby improving heating efficiency and steam absorption effect. At the same time, it ensures that the cache box can stably release the diluted gas, thereby reducing maintenance costs and extending equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0034] Figure 2 This is a schematic diagram of the installation of the spray pump in the present invention;

[0035] Figure 3 This is a schematic diagram of the installation of the extraction pump in the present invention;

[0036] Figure 4 This is a schematic diagram of the installation of the cache box in the present invention;

[0037] Figure 5 This is a schematic diagram of the installation of the control cylinder in the present invention;

[0038] Figure 6 This is a schematic diagram of the installation of the control plug in the present invention;

[0039] Figure 7 This is a schematic diagram of the installation of the rubbing ring in the present invention;

[0040] Figure 8 Schematic diagram of the internal structure of the liquid discharge pipe in the present invention;

[0041] Figure 9 This is a schematic diagram of the installation of the storage cartridge in the present invention;

[0042] Figure 10 This is a schematic diagram of the installation of the transmission sleeve in the present invention;

[0043] Figure 11 It is a structural schematic diagram of the scraping plate in the present invention.

[0044] Figure: 1, carrying box; 2, control cylinder; 3, mounting plate; 4, mounting box; 5, buffer box; 6, storage cylinder; 7, spray pump; 8, storage box; 9, spray plate; 10, extraction pump; 11, storage tank; 12, guide cylinder; 13, pressure nozzle; 14, drive motor; 15, heating plate; 16, recovery pump; 17, control cylinder; 18, sliding cylinder; 19, flow control ring; 20, guide frame; 21, top pressure cylinder; 22, Liquid inlet pipe; 23. Liquid discharge pipe; 24. Connecting rod; 25. Control shaft; 26. Guide rod; 27. Pressing cam; 28. Control plug; 29. ​​Pressing ring; 30. Guide ball; 31. Friction ring; 32. Transmission ring; 33. Transmission groove; 34. Sealing plate; 35. Transmission rod; 36. Sealing plug; 37. Filter cartridge; 38. Slow flow layer; 39. Scraping plate; 40. Transmission shaft; 41. Transmission sleeve; 42. Spiral groove. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0046] like Figures 1 to 11 As shown, the sampling device for methanol detection described in the present invention includes a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a disturbing mechanism.

[0047] The mounting portion includes a carrying box 1 and a mounting box 4 mounted above the carrying box 1 , wherein during real-time monitoring and sampling, the carrying box 1 is mounted on the upper end of the methanol storage tank by bolts.

[0048] The sampling mechanism includes an extraction pump 10 and a storage tank 11. In this embodiment, the storage tank 11 is a negative pressure tank, and a nozzle is provided at one end. The nozzle is a pressure pipe. The nozzle is connected when pressure is applied and is closed after the pressure stops. The extraction pump 10 is fixedly installed on the inner wall of the installation box 4 and is used to extract methanol and discharge it into the storage tank 11. Among them, the input end of the extraction pump 10 is provided with a hose (the hose is wound by an electric hose reel to facilitate unwinding into the storage tank to collect methanol at different depths), and extends to the inner cavity of the methanol storage tank 11. During sampling, the methanol inside the methanol storage tank is extracted by the extraction pump 10, and then injected into the inner cavity of the storage tank 11 to complete the sampling of methanol.

[0049] The spray mechanism includes a storage box 8, a spray pump 7 and a spray plate 9 fixedly mounted on the inner wall of the carrying box 1, wherein a plurality of atomizing nozzles are provided at the bottom of the spray plate 9.

[0050] The liquid in the storage box 8 is extracted by the spray pump 7 and discharged to the spray plate 9. In this embodiment, the liquid in the storage box 8 is pure water that can absorb and dilute methanol, wherein the output end of the spray pump 7 is connected to the inner cavity of the storage box 8, and the output end of the spray pump 7 is connected to the inner cavity of the spray plate 9. When the methanol sample is injected into the storage tank 11, atomized pure water droplets are sprayed into the sampling chamber through the spray plate 9. The atomized pure water can quickly contact and dissolve the volatile methanol vapor in the carrying box 1 due to the mutual solubility of methanol and water, directly converting the gaseous methanol into liquid (aqueous solution containing methanol), reducing the concentration of methanol vapor in the box, and reducing the risk of vapor accumulation in the closed space of the box from the root, ensuring operational safety. Compared with simply relying on the airtightness of the box itself or local ventilation, the atomized water droplets can evenly cover the internal space of the box and volatile parts such as valves and nozzles, capturing volatile vapor without dead angles, and preventing it from leaking in the gaps of the box.

[0051] The heating mechanism includes a cache box 5 and a heating plate 15. The cache box 5 is fixedly installed on the upper end surface of the storage box 8, and the cache box 5 is made of a transparent and water-permeable material. In this embodiment, the cache box 5 is made of a transparent acrylic plate material, and its bottom and top are provided with through holes (not shown in the figure). The pure water in the storage box 8 is injected into the cache box 5, and the pure water flowing through the cache box 5 is heated by sunlight, and then flows back to the inner cavity of the storage box 8 after heating.

[0052] The heating plate 15 is fixedly mounted on the outer wall of the storage box 8 . The heating plate 15 is a resistance heating plate 15 , and is used to heat the pure water inside the storage box 8 in rainy weather or when the outdoor temperature is low.

[0053] The heated pure water is extracted through the spray pump 7 and then sprayed out as warm atomized pure water by the spray plate 9. The warm water molecules move more actively, which can accelerate the dissolution rate of methanol vapor, reduce the vapor concentration in the box more quickly, and timely control the vapor accumulation in the injection stage. Its temperature is close to the ambient temperature, which can avoid the shrinkage of valves, nozzles and other components caused by low temperature, ensure the sealing of the connection to reduce the risk of leakage.

[0054] The flow disturbance mechanism includes a control cylinder 17, a liquid inlet pipe 22 and a liquid discharge pipe 23, wherein the inner walls of the liquid inlet pipe 22 and the liquid discharge pipe 23 are both provided with a one-way valve (not shown in the figure), and the conduction directions of the two one-way valves are opposite.

[0055] By reciprocatingly adjusting the pressure in the inner cavity of the control cylinder 17, the liquid inside the storage box 8 is controlled to enter the inner cavity of the control cylinder 17 through the liquid inlet pipe 22, and then discharged into the cache box 5 through the liquid discharge pipe 23. After the liquid in the inner cavity of the storage box 8 enters the inner cavity of the cache box 5, it is heated by sunlight and promotes the flow of liquid in the inner cavity of the storage box 8, thereby achieving a mixing effect, so that the temperature of the liquid in the storage box 8 is uniform.

[0056] During the sunlight exposure process, methanol vapor is discharged through the upper end of the buffer box 5, thereby achieving methanol dilution before discharge, thereby improving safety of use.

[0057] A pressure nipple 13 is fixedly mounted on the inner wall of the carrying box 1 . When the pressure nipple 13 is pressed, the pressure nipple 13 is connected, and when released, the pressure nipple 13 is closed.

[0058] The outer wall of the carrying box 1 is detachably mounted with a mounting plate 3, and the side wall of the mounting plate 3 is fixedly mounted with a guide cylinder 12. One end of the storage tank 11 is slidably plugged into the guide cylinder 12, and the storage tank 11 and the guide cylinder 12 are plugged into each other to achieve a detachable connection between the storage tank 11 and the mounting plate 3. A plurality of guide cylinders 12 are provided to facilitate the simultaneous installation of multiple storage tanks 11, and the number of pressure nozzles 13 is consistent with the number of storage tanks 11, and the output end of the extraction pump 10 is connected to the pressure nozzle 13.

[0059] A control cylinder 2 for pressing the storage tank 11 is fixedly mounted on the outer wall of the mounting plate 3. The control cylinder 2 is an electric telescopic rod, which pushes the corresponding storage tank 11 to slide through its movable end, thereby controlling the pressure nozzle 13 to be connected to the inner cavity of the storage tank 11.

[0060] During use, first assemble the storage tank 11 with the mounting plate 3, then insert the storage tank 11 into the inner cavity of the carrying box 1, and finally assemble and fix the mounting plate 3 with the carrying box 1. When the extraction pump 10 extracts methanol from the storage tank, the control cylinder 2 presses one of the storage tanks 11 to make the corresponding pressure nozzle 13 conductive, and then inject methanol to realize methanol sampling.

[0061] A recovery pump 16 is fixedly installed at the bottom of the storage box 8. The output end of the recovery pump 16 is connected to the inner cavity of the storage box 8, and the input end of the recovery pump 16 is connected to the inner cavity of the carrying box 1. When atomized pure water is sprayed into the carrying box 1, the atomized pure water gradually gathers in the carrying box 1. At this time, the pure water that absorbs methanol in the carrying box 1 is extracted by the recovery pump 16 and then discharged into the interior of the storage box 8. After the pure water in the storage box 8 is heated, the volatilization of methanol is controlled to facilitate the recycling of pure water. It should be noted that the outside of the storage box 8 is connected to an external water source through a conduit to maintain the liquid level of pure water inside the storage box 8.

[0062] As a preferred embodiment of the present invention, a slow flow layer 38 is fixedly installed on the inner wall of the cache box 5. The slow flow layer 38 is made of a common sponge material. After the pure water inside the storage box 8 is injected into the cache box 5, the liquid is absorbed by the slow flow layer 38, thereby extending the retention time of the liquid inside the cache box 5 to facilitate heating by sunlight. Preferably, the sponge is black to increase the heat absorption rate during irradiation.

[0063] A storage cartridge 6 is detachably mounted on the inner wall of the cache box 5 , and a filter cartridge 37 is detachably mounted on the inner wall of the storage cartridge 6 . The filter cartridge 37 is made of filter cotton.

[0064] The drain pipe 23 has an input end and two output ends. One of the output ends of the drain pipe 23 extends to the outer wall of the control cylinder 17. When the heating plate 15 is heated, the liquid inside the control cylinder 17 is discharged through the output end of the drain pipe 23, thereby realizing the circulation and stirring of the liquid inside the storage box 8.

[0065] The other output end of the drain pipe 23 extends to the inner cavity of the storage cylinder 6. When heated by sunlight, the liquid inside the control cylinder 17 is discharged to the inner cavity of the storage cylinder 6 through the output end of the drain pipe 23. After the liquid is filtered through the filter cylinder 37, it is discharged from the slow flow layer 38, thereby retaining solid impurities in the inner cavity of the storage cylinder 6, thereby preventing contamination of the slow flow layer 38.

[0066] A drive motor 14 is fixedly installed on the outer wall of the storage box 8. The output shaft of the drive motor 14 extends to the inner cavity of the storage box 8 and is fixedly installed with a control shaft 25. The drive motor 14 is used to drive the control shaft 25 to rotate, wherein a sealed bearing is provided at the contact position between the output shaft of the drive motor 14 and the inner wall of the storage box 8.

[0067] A control plug 28 is slidably mounted on the inner wall of the control cylinder 17 . The reciprocating sliding of the control plug 28 drives the reciprocating adjustment of the pressure in the inner cavity of the control cylinder 17 , thereby controlling the flow of pure water.

[0068] A guide rod 26 is fixedly installed at the bottom of the control plug 28, and a guide frame 20 elastically connected to the guide rod 26 is fixedly installed on the inner wall of the storage box 8, so that after the control plug 28 is slid, the elastic force of the elastic member drives the control plug 28 to reset.

[0069] A pressing cam 27 is fixedly mounted on the radial outer wall of the control shaft 25. The radial outer wall of the pressing cam 27 slides in contact with the bottom surface of the control plug 28. During the rotation of the control shaft 25, the pressing cam 27 is driven to rotate, and the elastic force of the elastic member drives the control plug 28 to slide back and forth.

[0070] As a preferred embodiment of the present invention, a top pressure cylinder 21 is fixedly mounted on the upper end surface of the control cylinder 17 , wherein the top pressure cylinder 21 is inserted into the interior of the storage cylinder 6 when the storage cylinder 6 and the cache box 5 are assembled.

[0071] A transmission shaft 40 is fixedly mounted on the inner wall of the storage cylinder 6 , and a transmission sleeve 41 sleeved with the transmission shaft 40 is elastically mounted on the inner wall of the storage cylinder 6 , wherein the transmission sleeve 41 is sleeved on the outer wall of the transmission shaft 40 .

[0072] The pressing cylinder 21 is used to press the transmission sleeve 41. When the storage cylinder 6 is inserted into the cache box 5, the pressing cylinder 21 presses the transmission sleeve 41 to slide. When the storage cylinder 6 is removed, the transmission sleeve 41 is reset by the elastic force exerted on the transmission sleeve 41.

[0073] A spiral groove 42 is provided on the radial outer wall of the transmission shaft 40, and a guide ball 30 is fixedly installed on the inner wall of the transmission sleeve 41 and slides with the spiral groove 42. During the sliding of the transmission sleeve 41, the guide ball 30 slides with the spiral groove 42 to control the rotation of the transmission shaft 40, thereby controlling the rotation of the transmission shaft 40 during the disassembly and assembly of the storage tube 6.

[0074] A scraper plate 39 is fixedly installed on the radial outer wall of the transmission shaft 40. The outer wall of the scraper plate 39 slides in contact with the inner wall of the filter cartridge 37, and the side wall of the scraper plate 39 is inclined. When the transmission shaft 40 rotates, the scraper plate 39 is driven to rotate, scraping the inner wall of the filter cartridge 37 to clean the inner wall of the filter cartridge 37.

[0075] A sliding cylinder 18 is fixedly installed on the inner wall of the storage box 8, and a connecting rod 24 is slidably installed on the inner wall of the sliding cylinder 18. The sliding cylinder 18 provides installation and support for the connecting rod 24, and at the same time, the sliding cylinder 18 limits the maximum sliding stroke of the connecting rod 24. One end of the connecting rod 24 extends to the inner cavity of the drain pipe 23, wherein the outer wall of the connecting rod 24 slides and fits with the inner wall of the drain pipe 23, further improving the sliding stability of the connecting rod 24.

[0076] A blocking plate 34 and a blocking plug 36 are fixedly mounted on the outer wall of the connecting rod 24 , and the sliding connecting rod 24 drives the blocking plate 34 and the blocking plug 36 to slide synchronously.

[0077] A blocking ring 19 is fixedly installed on the inner wall of the drain pipe 23, wherein the sealing plate 34 is used to block the output end of the drain pipe 23 connected to the inner cavity of the storage cylinder 6, and the sealing plug 36 is used to block the blocking ring 19. The sealing plate 34 and the sealing plug 36 are adjusted by the sliding connecting rod 24, thereby controlling one of the two output ends of the drain pipe 23 to be conductive.

[0078] A pressing ring 29 is elastically mounted on the radial outer wall of the control shaft 25 , and the pressing ring 29 is connected to the control shaft 25 via a spring.

[0079] A transmission ring 32 is rotatably installed on the inner wall of the storage box 8, and a friction ring 31 is fixedly installed on the inner wall of the transmission ring 32. The outer wall of the friction ring 31 fits with the outer wall of the top pressure ring 29. When the control shaft 25 rotates, the top pressure ring 29 is driven to rotate, and the top pressure ring 29 drives the friction ring 31 and the transmission ring 32 to rotate through friction force.

[0080] A transmission groove 33 is provided on the radial outer wall of the transmission ring 32, and a transmission rod 35 is fixedly installed on the outer wall of the connecting rod 24. One end of the transmission rod 35 extends to the inner wall of the transmission groove 33. When the transmission ring 32 rotates, the transmission groove 33 pushes the transmission rod 35 and the connecting rod 24 to slide.

[0081] When the transmission ring 32 rotates forward, it drives the connecting rod 24 to slide forward, thereby closing the flow-blocking ring 19. At this time, the liquid inside the control cylinder 17 is discharged into the storage cylinder 6. When the transmission ring 32 rotates backward, it drives the connecting rod 24 to slide backward, thereby controlling the sealing plate 34 to block the output end of the discharge pipe 23 connected to the storage cylinder 6.

[0082] In the summer when there is plenty of sunshine outdoors, the drive motor 14 drives the control shaft 25 and the transmission ring 32 to rotate forward. In the winter when the heating plate 15 is used for heating, the drive motor 14 drives the control shaft 25 and the transmission ring 32 to rotate backward.

[0083] The above-mentioned front, back, left, right, up and down are all based on the Figure 1As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0084] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0085] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for methanol detection, characterized in that: It includes a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a spoiler mechanism; The mounting portion comprises a carrying box (1) and a mounting box (4) mounted above the carrying box (1); The sampling mechanism comprises an extraction pump (10) and a storage tank (11); the extraction pump (10) is fixedly mounted on the inner wall of the installation box (4) and is used to extract methanol and discharge it into the storage tank (11); The spray mechanism comprises a storage box (8), a spray pump (7), and a spray plate (9) fixedly mounted on the inner wall of the carrying box (1); the liquid in the storage box (8) is extracted by the spray pump (7) and discharged to the spray plate (9); The heating mechanism comprises a cache box (5) and a heating plate (15), wherein the cache box (5) is fixedly mounted on the upper end surface of the storage box (8), and the cache box (5) is made of a transparent and water-permeable material, and the heating plate (15) is fixedly mounted on the outer wall of the storage box (8); The flow disturbance mechanism comprises a control cylinder (17), a liquid inlet pipe (22) and a liquid discharge pipe (23); the liquid inside the storage box (8) enters the inner cavity of the control cylinder (17) through the liquid inlet pipe (22) and is then discharged into the interior of the cache box (5) through the liquid discharge pipe (23).

2. A sampling device for methanol detection according to claim 1, characterized in that: A pressure nozzle (13) is fixedly mounted on the inner wall of the carrying box (1), a mounting plate (3) is detachably mounted on the outer wall of the carrying box (1), a guide cylinder (12) is fixedly mounted on the side wall of the mounting plate (3), one end of the storage tank (11) is slidably plugged into the guide cylinder (12), and a control cylinder (2) for pressing the storage tank (11) is fixedly mounted on the outer wall of the mounting plate (3); A recovery pump (16) is fixedly installed at the bottom of the storage box (8), the output end of the recovery pump (16) is connected to the inner cavity of the storage box (8), and the input end of the recovery pump (16) is connected to the inner cavity of the carrying box (1).

3. A sampling device for methanol detection according to claim 1, characterized in that: A slow flow layer (38) is fixedly mounted on the inner wall of the cache box (5), a storage cylinder (6) is detachably mounted on the inner wall of the cache box (5), and a filter cylinder (37) is detachably mounted on the inner wall of the storage cylinder (6); The drain tube (23) has an input end and two output ends, one of the output ends of the drain tube (23) extends to the outer wall of the control cylinder (17), and the other output end of the drain tube (23) extends to the inner cavity of the storage cylinder (6).

4. A sampling device for methanol detection according to claim 3, characterized in that: A drive motor (14) is fixedly mounted on the outer wall of the storage box (8); an output shaft of the drive motor (14) extends to the inner cavity of the storage box (8) and is fixedly mounted with a control shaft (25); A control plug (28) is slidably mounted on the inner wall of the control cylinder (17), a guide rod (26) is fixedly mounted on the bottom of the control plug (28), and a guide frame (20) elastically connected to the guide rod (26) is fixedly mounted on the inner wall of the storage box (8); A pressing cam (27) is fixedly mounted on the radial outer wall of the control shaft (25), and the radial outer wall of the pressing cam (27) is in sliding contact with the bottom surface of the control plug (28).

5. A sampling device for methanol detection according to claim 4, characterized in that: A top pressure cylinder (21) is fixedly mounted on the upper end surface of the control cylinder (17); A transmission shaft (40) is fixedly mounted on the inner wall of the storage cylinder (6), a transmission sleeve (41) sleeved with the transmission shaft (40) is elastically mounted on the inner wall of the storage cylinder (6), and the pressing cylinder (21) is used to press the transmission sleeve (41); A spiral groove (42) is formed on the radial outer wall of the transmission shaft (40), and a guide ball (30) is fixedly mounted on the inner wall of the transmission sleeve (41) and is in sliding engagement with the spiral groove (42); A scraper plate (39) is fixedly mounted on the radial outer wall of the transmission shaft (40), the outer wall of the scraper plate (39) is slidably fitted with the inner wall of the filter cylinder (37), and the side wall of the scraper plate (39) is inclined.

6. A sampling device for methanol detection according to claim 5, characterized in that: A sliding cylinder (18) is fixedly mounted on the inner wall of the storage box (8), a connecting rod (24) is slidably mounted on the inner wall of the sliding cylinder (18), and one end of the connecting rod (24) extends to the inner cavity of the drain pipe (23); A sealing plate (34) and a sealing plug (36) are fixedly mounted on the outer wall of the connecting rod (24); A flow blocking ring (19) is fixedly mounted on the inner wall of the liquid discharge pipe (23).

7. A sampling device for methanol detection according to claim 6, characterized in that: A pressure ring (29) is elastically mounted on the radial outer wall of the control shaft (25), a transmission ring (32) is rotatably mounted on the inner wall of the storage box (8), a friction ring (31) is fixedly mounted on the inner wall of the transmission ring (32), and the outer wall of the friction ring (31) is in contact with the outer wall of the pressure ring (29); A transmission groove (33) is formed on the radial outer wall of the transmission ring (32), and a transmission rod (35) is fixedly mounted on the outer wall of the connecting rod (24), with one end of the transmission rod (35) extending to the inner wall of the transmission groove (33).

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