A sampling device for methanol detection

Abstract

The application belongs to the technical field of methanol sampling, and particularly relates to a sampling device for methanol detection, which comprises a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a turbulence mechanism. The mounting portion comprises a bearing box and a mounting box mounted above the bearing box. The sampling mechanism comprises a suction pump and a storage tank. The suction pump is fixedly installed on the inner wall of the mounting box and is used for sucking methanol and discharging the methanol into the storage tank. The spraying mechanism comprises a storage box, a spraying pump and a spraying plate fixedly installed on the inner wall of the bearing box. The spraying pump is used for sucking liquid in the storage box and discharging the liquid to the spraying plate. The heating mechanism comprises a buffer box and a heating plate. The buffer box is fixedly installed on the upper end surface of the storage box and is made of transparent and water-permeable material. The heating plate is fixedly installed on the outer wall of the storage box. The turbulence mechanism comprises a control cylinder, a liquid inlet pipe and a liquid discharge pipe. The above-mentioned structure cooperation avoids health damage caused by personnel inhaling steam and prevents the risk of explosion caused by steam meeting open fire.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of methanol sampling, and particularly relates to a sampling device for methanol detection. BACKGROUND

[0002] In a methanol production process, in order to ensure product quality and production safety, methanol in a storage tank needs to be regularly sampled and detected, especially for a large-scale methanol storage tank, the methanol in the tank is stratified due to factors such as standing time and temperature, and the methanol components at different depths may be different, so sampling needs to be performed at multiple depth positions to ensure the accuracy of the detection results.

[0003] Since the height of a large-scale storage tank usually exceeds several meters, a sampling personnel needs to climb to the top of the tank by means of a ladder or a scaffold, in the process, the surface of the tank may be slippery due to methanol residues or environmental humidity, and there is a lack of stable protection measures in the climbing process, once a person falls, it is easy to cause casualties, at the same time, high-altitude operation is greatly affected by environmental factors such as wind and weather, further increasing the operation risk. In addition, the operation space at the top of some storage tanks is narrow, and when the sampling personnel moves or adjusts the sampling position, the body is easy to collide with the tank components due to the limited space, causing secondary safety accidents.

[0004] After the sampling personnel draws out the methanol from the tank, the methanol needs to be manually injected into a collection device, since the methanol has strong volatility, and there is a lack of a sealed connection structure between the sampling pipe and the collection device, in the transfer process, methanol vapor will directly diffuse into the operating environment, the methanol vapor not only has a stimulating odor, causing damage to the human respiratory system, but also belongs to flammable and explosive gas, when the concentration of methanol vapor in the air reaches a certain threshold, it is easy to cause explosion when encountering fire or static electricity, posing a serious threat to surrounding equipment and personnel.

[0005] Therefore, the application provides a sampling device for methanol detection. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background.

[0007] The technical scheme adopted by the application to solve the technical problems is that the sampling device for methanol detection comprises a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a turbulence mechanism.

[0008] The mounting portion comprises a bearing box and a mounting box mounted above the bearing box.

[0009] The sampling mechanism comprises a pumping device and a storage tank, the pumping device is fixedly installed on the inner wall of the mounting box, and is used to pump the methanol into the storage tank.

[0010] The spraying mechanism comprises a storage tank, a spraying pump and a spraying plate fixedly installed on the inner wall of the bearing tank, the spraying pump draws liquid in the storage tank and discharges the liquid to the spraying plate;

[0011] The heating mechanism comprises a buffer tank and a heating plate, the buffer tank is fixedly installed on the upper end surface of the storage tank, the buffer tank is made of transparent and water-permeable material, and the heating plate is fixedly installed on the outer wall of the storage tank;

[0012] The turbulence mechanism comprises a control cylinder, a liquid inlet pipe and a liquid outlet pipe, the liquid in the storage tank enters the inner cavity of the control cylinder through the liquid inlet pipe, and then is discharged into the buffer tank through the liquid outlet pipe.

[0013] Preferably, the inner wall of the bearing tank is fixedly installed with a pressure connector, the outer wall of the bearing tank is detachably installed with a mounting plate, the side wall of the mounting plate is fixedly installed with a guide cylinder, one end of the storage tank is slidably connected with the guide cylinder, and the outer wall of the mounting plate is fixedly installed with a control cylinder for pressing the storage tank;

[0014] The bottom of the storage tank is fixedly installed with a recovery pump, the output end of the recovery pump is connected with the inner cavity of the storage tank, and the input end of the recovery pump is connected with the inner cavity of the bearing tank.

[0015] Preferably, the inner wall of the buffer tank is fixedly installed with a buffer layer, the inner wall of the buffer tank is detachably installed with a storage cylinder, and the inner wall of the storage cylinder is detachably installed with a filter cylinder;

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

[0017] Preferably, the outer wall of the storage tank is fixedly installed with a driving motor, the output shaft of the driving motor extends to the inner cavity of the storage tank and is fixedly installed with a control shaft;

[0018] The inner wall of the control cylinder is slidably installed with a control plug, the bottom of the control plug is fixedly installed with a guide rod, and the inner wall of the storage tank is fixedly installed with a guide frame elastically connected with the guide rod;

[0019] The radial outer wall of the control shaft is fixedly installed with a pressing cam, and the radial outer wall of the pressing cam is slidably attached to the bottom surface of the control plug.

[0020] Preferably, the upper end surface of the control cylinder is fixedly installed with a pressing cylinder;

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

[0022] The radial outer wall of the transmission shaft is provided with a spiral groove, and the inner wall of the transmission sleeve is fixedly installed with a guide ball slidably matched with the spiral groove;

[0023] The radial outer wall of the transmission shaft is fixedly installed with a scraping plate, the outer wall of the scraping plate is in sliding fit with the inner wall of the filter cylinder, and the side wall of the scraping plate is obliquely arranged.

[0024] Preferably, the inner wall of the storage box is fixedly installed with a sliding cylinder, the inner wall of the sliding cylinder is slidingly installed with a connecting rod, and one end of the connecting rod extends to the inner cavity of the liquid discharge pipe.

[0025] The outer wall of the connecting rod is fixedly installed with a blocking plate and a blocking plug.

[0026] The inner wall of the liquid discharge pipe is fixedly installed with a flow resistance ring.

[0027] Preferably, the radial outer wall of the control shaft is elastically installed with a pressing ring, the inner wall of the storage box is rotatably installed with a transmission ring, the inner wall of the transmission ring is fixedly installed with a friction ring, and the outer wall of the friction ring is in fit with the outer wall of the pressing ring.

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

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

[0030] 1. The present application sets up a bearing box, a spraying mechanism and a heating mechanism, solves the risk of falling from high altitude and the safety hazard of methanol vapor leakage in the existing sampling method, significantly improves the operation safety, and the electric reel can automatically control the unwinding and winding of the hose, so that the sampling personnel do not need to climb to the top of the large storage tank, and can flexibly collect methanol samples of different depths, completely avoiding accidents such as falling, collision and the like caused by wet and slippery tank body, narrow space or environmental factors during climbing, the bearing box forms a closed operation space, the spraying mechanism sprays atomized pure water in the box, the water temperature is increased by the heating mechanism to enhance the activity of water molecules, which can quickly and fully mix and absorb the volatile methanol vapor, effectively preventing the vapor from leaking to the outside, avoiding the health damage caused by inhaling the vapor, and preventing the risk of explosion caused by the vapor meeting open fire.

[0031] 2. The present application sets up multiple groups of guide cylinders, storage tanks, recovery pumps, filter cylinders, scraping plates and turbulence mechanisms, solves the problems of low sampling efficiency, resource waste, inconvenient equipment maintenance and uneven heating, improves the economic efficiency and stability of the operation, multiple samples are collected at the same time by the cooperation of the multiple groups of guide cylinders and control cylinders, the efficiency is improved, the recovery pump circulates and utilizes the absorption liquid, the waste is reduced, the filter cylinder and the scraping plate ensure the cleanliness of the liquid, the turbulence mechanism promotes the flow of the liquid in the storage box, and the sunlight irradiation of the buffer box is combined to heat, so that the liquid is uniformly heated, the heating efficiency and the vapor absorption effect are improved, and the maintenance cost is reduced, the equipment life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0032] The application will be further described in conjunction with the drawings.

[0033] Figure 1 is a structural schematic diagram of the whole application;

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

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

[0036] Figure 4 is a schematic diagram of the installation of the buffer box in the application;

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

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

[0039] Figure 7 is a schematic diagram of the installation of the wiping ring in the application;

[0040] Figure 8 is a schematic diagram of the internal structure of the liquid discharge pipe in the application;

[0041] Figure 9 is a schematic diagram of the installation of the storage cylinder in the application;

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

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

[0044] In the drawings: 1, bearing 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 connector; 14, drive motor; 15, heating plate; 16, recovery pump; 17, control cylinder; 18, sliding cylinder; 19, choke ring; 20, guide bracket; 21, pressure cylinder; 22, liquid inlet pipe; 23, liquid discharge pipe; 24, connecting rod; 25, control shaft; 26, guide rod; 27, pressure cam; 28, control plug; 29, pressure ring; 30, guide ball; 31, friction ring; 32, transmission ring; 33, transmission groove; 34, blocking plate; 35, transmission rod; 36, blocking plug; 37, filter cylinder; 38, buffer layer; 39, scraping plate; 40, transmission shaft; 41, transmission sleeve; 42, helical groove. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0046] As shown in Figures 1 to 11 A sampling device for detecting methanol, comprising a mounting portion, a sampling mechanism, a spraying mechanism, a heating mechanism and a turbulence mechanism.

[0047] The mounting portion comprises a bearing box 1 and a mounting box 4 mounted above the bearing box 1, wherein the bearing box 1 is bolted to the upper end of the methanol storage tank when real-time monitoring sampling is performed.

[0048] The sampling mechanism comprises a suction pump 10 and a storage tank 11, in this embodiment, the storage tank 11 is a negative pressure tank with a mouthpiece at one end, the mouthpiece is a pressure connector that is open when under pressure and closed when pressure is removed, the suction pump 10 is fixedly installed on the inner wall of the mounting box 4 and is used to draw methanol into the storage tank 11, wherein the input end of the suction pump 10 is provided with a hose that is wound on an electric reel to facilitate unwinding into the storage tank to collect methanol at different depths, and the hose extends into the inner cavity of the methanol storage tank 11, during sampling, the methanol inside the methanol storage tank is drawn by the suction pump 10 and then injected into the inner cavity of the storage tank 11 to complete the sampling of methanol.

[0049] The spraying mechanism comprises a storage tank 8, a spraying pump 7 and a spraying plate 9 fixedly installed on the inner wall of the bearing box 1, wherein the bottom of the spraying plate 9 is provided with a plurality of atomizing nozzles.

[0050] The liquid in the storage tank 8 is drawn by the spraying pump 7 and discharged to the spraying plate 9, in this embodiment, the liquid in the storage tank 8 is pure water that can absorb and dilute methanol, wherein the output end of the spraying pump 7 communicates with the inner cavity of the storage tank 8, and the output end of the spraying pump 7 communicates with the inner cavity of the spraying plate 9, when the methanol sample is injected into the storage tank 11, the atomized pure water droplets are sprayed into the sampling chamber through the spraying plate 9, the atomized pure water can quickly contact and dissolve the methanol vapor volatilized in the bearing box 1 by virtue of 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, reducing the risk of vapor accumulation in the closed space of the box body from the root, ensuring operation safety, compared with simply relying on the airtightness of the box body or local ventilation, the atomized water droplets can uniformly cover the internal space of the box body and the valve, the mouthpiece and other volatile parts, capturing the volatile vapor without dead angle and avoiding leakage at the gaps of the box body.

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

[0052] The heating plate 15 is fixedly installed on the outer wall of the storage box 8, and the heating plate 15 is an electric resistance heating plate 15, which is used for heating the pure water in the storage box 8 in rainy weather and low outdoor temperature.

[0053] The heated pure water is extracted by the spray pump 7, and then the warm and atomized pure water is sprayed out by the spray plate 9, the warm water molecules move more actively, the dissolution rate of methanol vapor can be accelerated, the vapor concentration in the box can be reduced more quickly, the vapor accumulation in the injection stage can be controlled in time, the temperature is close to the ambient temperature, the contraction of the valve, the connector and other components caused by low temperature can be avoided, the connection sealing property is ensured to reduce the risk of leakage.

[0054] The turbulence mechanism comprises a control cylinder 17, a liquid inlet pipe 22 and a liquid outlet pipe 23, wherein the inner walls of the liquid inlet pipe 22 and the liquid outlet pipe 23 are provided with one-way valves (not shown in the figure), and the directions of the two one-way valves are opposite.

[0055] The pressure in the inner cavity of the control cylinder 17 is adjusted by reciprocating adjustment, so that the liquid in the storage box 8 enters the inner cavity of the control cylinder 17 through the liquid inlet pipe 22, and then enters the inner cavity of the buffer box 5 through the liquid outlet pipe 23, so that the liquid in the inner cavity of the storage box 8 enters the inner cavity of the buffer box 5, so as to be heated by sunlight irradiation and promote the flow of the liquid in the inner cavity of the storage box 8, so as to achieve the mixing effect and make the temperature of the liquid in the inner cavity of the storage box 8 uniform.

[0056] In the process of sunlight irradiation, the methanol vapor is discharged from the upper end of the buffer box 5, so as to realize the dilution and discharge of the methanol, and improve the safety of use.

[0057] The inner wall of the bearing box 1 is fixedly installed with a pressure connector 13, the pressure connector 13 is connected after being pressed, and the pressure connector 13 is closed after being released.

[0058] The outer wall of the bearing box 1 is detachably installed with a mounting plate 3, the side wall of the mounting plate 3 is fixedly installed with a guide cylinder 12, one end of a storage tank 11 is slidably connected with the guide cylinder 12, the storage tank 11 and the mounting plate 3 are detachably connected through the insertion of the storage tank 11 and the guide cylinder 12, wherein the guide cylinder 12 is provided with a plurality of guide cylinders, so that a plurality of storage tanks 11 can be installed at the same time, the number of pressure connectors 13 is consistent with the number of storage tanks 11, and the output end of the suction pump 10 is connected with the pressure connector 13.

[0059] The outer wall of the mounting plate 3 is fixedly provided with a control cylinder 2 for pressing the storage tank 11, the control cylinder 2 is an electric telescopic rod, and the movable end of the control cylinder 2 pushes the corresponding storage tank 11 to slide, so that the pressure connection nozzle 13 is in communication with the inner cavity of the storage tank 11.

[0060] In use, first, the storage tank 11 is assembled with the mounting plate 3, then the storage tank 11 is inserted into the inner cavity of the bearing box 1, and finally, the mounting plate 3 is assembled and fixed with the bearing box 1, when the methanol in the storage tank is extracted by the extraction pump 10, the control cylinder 2 presses one of the storage tanks 11 to make the corresponding pressure connection nozzle 13 in communication, then the methanol is injected to realize the sampling of the methanol.

[0061] The bottom of the storage tank 8 is fixedly provided with a recovery pump 16, the output end of the recovery pump 16 is connected with the inner cavity of the storage tank 8, and the input end of the recovery pump 16 is connected with the inner cavity of the bearing box 1, when the atomized pure water is sprayed into the bearing box 1, the atomized pure water gradually gathers in the bearing box 1, at this time, the pure water in the bearing box 1 for absorbing methanol is extracted by the recovery pump 16 and then discharged into the inside of the storage tank 8, after the pure water in the storage tank 8 is heated, the volatilization of the methanol is controlled, so that the pure water can be recycled, and it should be noted that the outside of the storage tank 8 is connected with an external water source through a conduit, so as to keep the liquid level of the pure water in the inside of the storage tank 8.

[0062] As a preferred embodiment of the present application, the inner wall of the buffer tank 5 is fixedly provided with a buffer layer 38, the buffer layer 38 is a common sponge material, after the pure water in the inside of the storage tank 8 is injected into the buffer tank 5, the liquid is absorbed by the buffer layer 38, so as to prolong the time of the liquid staying in the buffer tank 5, so as to be heated by sunlight, preferably, the sponge is black, so as to improve the heat absorption rate during irradiation.

[0063] The inner wall of the buffer tank 5 is detachably provided with a storage cylinder 6, the inner wall of the storage cylinder 6 is detachably provided with a filter cylinder 37, and the filter cylinder 37 is made of filter cotton material.

[0064] The liquid discharge pipe 23 has one input end and two output ends, one of the output ends of the liquid discharge pipe 23 extends to the outer wall of the control cylinder 17, when the heating plate 15 is heated, the liquid in the inside of the control cylinder 17 is discharged through the output end of the liquid discharge pipe 23, so as to realize the circulating flow and stirring of the liquid in the inside of the storage tank 8.

[0065] The other output end of the liquid discharge pipe 23 extends to the inner cavity of the storage cylinder 6, when the liquid is heated by sunlight irradiation, the liquid in the inside of the control cylinder 17 is discharged through the output end of the liquid discharge pipe 23 to the inner cavity of the storage cylinder 6, and after the liquid is filtered by the filter cylinder 37, the liquid is discharged from the buffer layer 38, so as to retain the solid impurities in the inner cavity of the storage cylinder 6, thereby preventing the pollution of the buffer layer 38.

[0066] The outer wall of the storage box 8 is fixedly provided with a driving motor 14, the output shaft of the driving motor 14 extends to the inner cavity of the storage box 8, and a control shaft 25 is fixedly arranged, the driving motor 14 is used for driving the control shaft 25 to rotate, and the output shaft of the driving motor 14 is provided with a sealing bearing at the position in contact with the inner wall of the storage box 8.

[0067] The inner wall of the control cylinder 17 is slidably provided with a control plug 28, and the control plug 28 is reciprocally slid to drive the pressure in the inner cavity of the control cylinder 17 to be reciprocally adjusted, so as to control the flow of pure water.

[0068] The bottom of the control plug 28 is fixedly provided with a guide rod 26, and the inner wall of the storage box 8 is fixedly provided with a guide frame 20 elastically connected with the guide rod 26, so that after the control plug 28 is slid, the control plug 28 is driven to reset by the elastic force of the elastic member.

[0069] The radial outer wall of the control shaft 25 is fixedly provided with a pressing cam 27, the radial outer wall of the pressing cam 27 is slidably attached to the bottom surface of the control plug 28, and in the process of rotating the control shaft 25, the pressing cam 27 is driven to rotate, and cooperates with the elastic force of the elastic member to drive the control plug 28 to reciprocally slide.

[0070] As a preferred embodiment of the present application, the upper end surface of the control cylinder 17 is fixedly provided with a pressing cylinder 21, and in the process of assembling the storage cylinder 6 and the buffer box 5, the pressing cylinder 21 is inserted into the inside of the storage cylinder 6.

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

[0072] The pressing cylinder 21 is used for pressing the transmission sleeve 41, and in the process of inserting the storage cylinder 6 into the inside of the buffer box 5, the pressing cylinder 21 presses the transmission sleeve 41 to slide, and in the process of disassembling the storage cylinder 6, the transmission sleeve 41 is controlled to reset by the elastic force received by the transmission sleeve 41.

[0073] The radial outer wall of the transmission shaft 40 is provided with a spiral groove 42, and the inner wall of the transmission sleeve 41 is fixedly provided with a guide ball 30 slidably matched with the spiral groove 42, and in the process of sliding the transmission sleeve 41, the transmission shaft 40 is controlled to rotate by the sliding matching of the guide ball 30 and the spiral groove 42, so as to control the transmission shaft 40 to rotate in the process of disassembling and assembling the storage cylinder 6.

[0074] The radial outer wall of the transmission shaft 40 is fixedly provided with a scraping plate 39, the outer wall of the scraping plate 39 is slidably attached to the inner wall of the filter cylinder 37, and the side wall of the scraping plate 39 is obliquely arranged, and in the process of rotating the transmission shaft 40, the scraping plate 39 is driven to rotate to scrape the inner wall of the filter cylinder 37, so as to clean the inner wall of the filter cylinder 37.

[0075] The inner wall of the storage box 8 is fixedly provided with a sliding cylinder 18, and the inner wall of the sliding cylinder 18 is slidably provided with a connecting rod 24. The sliding cylinder 18 provides mounting 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 into the inner cavity of the drainage pipe 23, and the outer wall of the connecting rod 24 is in sliding fit with the inner wall of the drainage pipe 23, thereby further improving the stability of the sliding of the connecting rod 24.

[0076] The outer wall of the connecting rod 24 is fixedly provided with a blocking plate 34 and a blocking plug 36, and the sliding of the connecting rod 24 drives the synchronous sliding of the blocking plate 34 and the blocking plug 36.

[0077] The inner wall of the drainage pipe 23 is fixedly provided with a flow resistance ring 19. The blocking plate 34 is used to block the output end of the drainage pipe 23 communicating with the inner cavity of the storage cylinder 6, and the blocking plug 36 is used to block the flow resistance ring 19. The sliding of the connecting rod 24 adjusts the blocking plate 34 and the blocking plug 36, thereby controlling the conduction of one of the two output ends of the drainage pipe 23.

[0078] The radially outer wall of the control shaft 25 is elastically provided with a pressing ring 29, and the pressing ring 29 is connected with the control shaft 25 through a spring.

[0079] The inner wall of the transmission ring 32 is fixedly provided with a friction ring 31, and the outer wall of the friction ring 31 is in fit with the outer wall of the pressing ring 29. When the control shaft 25 rotates, the pressing ring 29 is driven to rotate, and the pressing ring 29 drives the friction ring 31 and the transmission ring 32 to rotate through friction.

[0080] The radially outer wall of the transmission ring 32 is provided with a transmission groove 33, and the outer wall of the connecting rod 24 is fixedly provided with a transmission rod 35. 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 rod 35 and the connecting rod 24 are pushed to slide through the transmission groove 33.

[0081] When the transmission ring 32 rotates forward, the connecting rod 24 is driven to slide forward, so as to close the flow resistance ring 19. At this time, the liquid in the control cylinder 17 is discharged into the inner cavity of the storage cylinder 6. When the transmission ring 32 reversely rotates, the connecting rod 24 is driven to reversely slide, so as to control the blocking plate 34 to block the output end of the drainage pipe 23 communicating with the storage cylinder 6.

[0082] In summer when the sunlight is sufficient, the driving motor 14 drives the control shaft 25 and the transmission ring 32 to rotate forward. In winter, when the heating plate 15 is used for heating, the driving motor 14 drives the control shaft 25 and the transmission ring 32 to reversely rotate.

[0083] The above-mentioned front, back, left, right, up and down are all relative to the drawings in the specification Figure 1For reference, according to the standard of the perspective of the person, the side of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on.

[0084] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0085] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sampling device for methanol detection, characterized in that: It includes an installation unit, a sampling mechanism, a spraying mechanism, a heating mechanism, and a turbulence-disrupting mechanism; The mounting section includes a carrier box (1) and a mounting box (4) mounted on top of the carrier box (1); The sampling mechanism includes a pump (10) and a storage tank (11). The pump (10) is fixedly installed on the inner wall of the mounting box (4) and is used to extract methanol and discharge it into the storage tank (11). The spraying mechanism includes a storage tank (8), a spray pump (7), and a spray plate (9) fixedly installed on the inner wall of the carrier box (1). The spray pump (7) draws liquid from the storage tank (8) and discharges it to the spray plate (9). The heating mechanism includes a buffer box (5) and a heating plate (15). The buffer box (5) is fixedly installed on the upper surface of the storage box (8), and the buffer box (5) is made of transparent and water-permeable material. The heating plate (15) is fixedly installed on the outer wall of the storage box (8). The turbulence mechanism includes a control cylinder (17), an inlet pipe (22), and a drain pipe (23). The liquid inside the storage tank (8) enters the inner cavity of the control cylinder (17) through the inlet pipe (22) and is then discharged into the buffer tank (5) through the drain pipe (23). The buffer box (5) has a flow-retardant layer (38) fixedly installed on its inner wall, and a storage cylinder (6) is detachably installed on the inner wall of the buffer box (5). A filter cylinder (37) is detachably installed on the inner wall of the storage cylinder (6). The drain pipe (23) has one 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), and the other output end of the drain pipe (23) extends to the inner cavity of the storage cylinder (6). 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 into the inner cavity of the storage box (8) and is fixedly installed with a control shaft (25). A control plug (28) is slidably installed on the inner wall of the control cylinder (17), and a guide rod (26) is fixedly installed on the bottom of the control plug (28). A guide frame (20) that is elastically connected to the guide rod (26) is fixedly installed on the inner wall of the storage box (8). A top-pressure cam (27) is fixedly installed on the radial outer wall of the control shaft (25), and the radial outer wall of the top-pressure cam (27) slides against the bottom surface of the control plug (28); A top pressure cylinder (21) is fixedly installed on the upper end face of the control cylinder (17). The inner wall of the storage cylinder (6) is fixedly installed with a drive shaft (40), and the inner wall of the storage cylinder (6) is elastically installed with a drive sleeve (41) that is sleeved with the drive shaft (40). The top pressure cylinder (21) is used to press the drive sleeve (41). The outer radial wall of the drive shaft (40) is provided with a spiral groove (42), and the inner wall of the drive sleeve (41) is fixedly installed with guide balls (30) that slide in cooperation with the spiral groove (42). A scraper (39) is fixedly installed on the radial outer wall of the drive shaft (40). The outer wall of the scraper (39) slides against the inner wall of the filter cylinder (37), and the side wall of the scraper (39) is inclined.

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

3. The sampling device for methanol detection according to claim 2, characterized in that: 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). One end of the connecting rod (24) extends into the inner cavity of the drain pipe (23). The outer wall of the connecting rod (24) is fixedly installed with a sealing plate (34) and a sealing plug (36). A flow-blocking ring (19) is fixedly installed on the inner wall of the drain pipe (23).

4. A sampling device for methanol detection according to claim 3, characterized in that: A top pressure ring (29) is elastically installed on the radial outer wall of the control shaft (25), a transmission ring (32) is rotatably installed on the inner wall of the storage box (8), a friction ring (31) is fixedly installed 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 top pressure ring (29). The outer radial wall of the transmission ring (32) is provided with a transmission groove (33), and the outer wall of the connecting rod (24) is fixedly installed with a transmission rod (35), one end of which extends to the inner wall of the transmission groove (33).

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