CN113790934A - Sampling device for non-methane total hydrocarbon in fixed pollution source - Google Patents

Sampling device for non-methane total hydrocarbon in fixed pollution source Download PDF

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CN113790934A
CN113790934A CN202111010250.XA CN202111010250A CN113790934A CN 113790934 A CN113790934 A CN 113790934A CN 202111010250 A CN202111010250 A CN 202111010250A CN 113790934 A CN113790934 A CN 113790934A
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roller
sampling device
sampling
assembly
fixed
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CN113790934B (en
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张亚飞
夏凯
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Shanghai Institute of Measurement and Testing Technology
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Shanghai Institute of Measurement and Testing Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2202Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2205Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0095Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0098Protecting coverages on the filter which is removed before the filter is used, protection of filter, packaging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools
    • B08B1/10Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2273Atmospheric sampling

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  • Life Sciences & Earth Sciences (AREA)
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  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

本发明公开了非甲烷总烃的采样装置技术领域的一种用于固定污染源中非甲烷总烃的采样装置,包括,承接组件,所述承接组件包括装配筒;导向组件,所述导向组件包括两组导向环,前后侧所述导向环均固定套设在装配筒外壁;过滤组件,所述过滤组件包括处于两组导向环上方的保护壳,且保护壳底部一端活动贯穿有滤网布。本发明通过采样泵使得气体进入装配筒内时,通过滤网布对从弧形采样口进入的气体进行过滤,在对应弧形采样口处的滤网布处堵塞满杂质时,进而驱动装置打开使得放卷辊放卷滤网布,收卷辊进行收卷滤网布,更换滤网布的使用位置,避免对应弧形采样口处的滤网布处堵塞造成干涉采样稳定性。

Figure 202111010250

The invention discloses a sampling device for non-methane total hydrocarbons in the technical field of non-methane total hydrocarbons sampling device for fixing non-methane total hydrocarbons in pollution sources. Two sets of guide rings, the guide rings on the front and rear sides are fixedly sleeved on the outer wall of the assembly cylinder; the filter assembly includes a protective shell above the two sets of guide rings, and one end of the bottom of the protective shell runs through a filter cloth. In the present invention, when the gas enters the assembly cylinder through the sampling pump, the gas entering from the arc-shaped sampling port is filtered through the filter cloth. When the filter cloth at the corresponding arc-shaped sampling port is blocked with impurities, the driving device is turned on. Make the unwinding roller unwind the filter cloth, the rewinding roller will rewind the filter cloth, and change the use position of the filter cloth, so as to avoid the interference of the sampling stability caused by the blockage of the filter cloth at the corresponding arc sampling port.

Figure 202111010250

Description

Sampling device for non-methane total hydrocarbon in fixed pollution source
Technical Field
The invention relates to the technical field of non-methane total hydrocarbon sampling devices, in particular to a non-methane total hydrocarbon sampling device used in a fixed pollution source.
Background
Non-methane total hydrocarbons, which refer to all volatile hydrocarbons (mainly C2-C8) except methane, have quite complex components and are mainly derived from gasoline combustion, waste incineration, solvent evaporation, waste extraction and the like. When the concentration of non-methane hydrocarbon in the atmosphere exceeds a certain value, the non-methane hydrocarbon is not only harmful to human health, but also can generate photochemical smog under certain conditions through sunlight irradiation, thus causing harm to the environment and human beings. And photochemical smog can be generated after the sunlight irradiation under certain conditions, and the generated peroxyethyl nitrate, aldehydes and the like cause harm to the environment and human beings.
Currently, the determination of non-methane total hydrocarbons in stationary sources of contamination requires pumping into a detection instrument through a sampling device. However, impurities in the pollution source and the like can be synchronously sampled during sampling, and further serious errors are caused in the determination of the non-methane total hydrocarbon. Although current sampling device adopts filtering component to filter impurity, filtering component can appear blockking up after long-term the use, influences subsequent sampling operation, greatly reduced sampling quality and detection precision. To this end, we propose a sampling device for fixing non-methane total hydrocarbons in a pollution source.
Disclosure of Invention
The present invention is directed to a sampling device for fixing non-methane total hydrocarbons in a pollution source to solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a sampling device for fixing non-methane total hydrocarbons in a pollution source comprises,
the receiving assembly comprises an assembly cylinder, the front end of the left side of the assembly cylinder is provided with a communicated arc-shaped sampling port, the rear end of the assembly cylinder is provided with a communicated sampling pipe, and the other end of the sampling pipe is connected with the input end of an external sampling pump;
the guide assembly comprises two groups of guide rings, the guide rings on the front side and the rear side are fixedly sleeved on the outer wall of the assembly cylinder, the two groups of guide rings are respectively positioned in the front and the rear of the arc-shaped sampling port, a plurality of groups of auxiliary rollers are arranged between the two groups of guide rings in a clockwise arc array manner through a shaft body in a rotating manner, a plurality of groups of cleaning rollers are arranged between the two groups of guide rings in an anticlockwise arc array manner through a shaft body in a rotating manner, two groups of arc-shaped guide edges are fixed at the left end of the top and the right end of the bottom of one opposite side of the two groups of guide rings, and the arc-shaped guide edges are positioned on the outer sides of the auxiliary rollers and the cleaning rollers;
the filter assembly comprises a protective shell above the two groups of guide rings, mounting frames are symmetrically fixed to the front side and the rear side of the protective shell, the front side and the rear side of the protective shell are fixed to the front side and the rear side of the protective shell respectively, filter screen cloth penetrates through one end of the protective shell bottom in a movable mode, and the other end of the filter screen cloth bypasses the auxiliary roller and the cleaning roller in the clockwise direction and penetrates through the protective shell bottom.
Further, the vertical rotation of back cavity is provided with the bull stick in the assembly section of thick bamboo, and the outer wall top and the bottom of bull stick are all fixed the cover and are equipped with the follow-up impeller, and the outer wall middle part of bull stick is equipped with hollow shell through bearing movable sleeve, and the lateral wall of hollow shell passes through the support and fixes with an assembly section of thick bamboo inner wall, the position that an assembly section of thick bamboo inner chamber and be in the bull stick rear is fixed with electric heating net.
Furthermore, a transmission rod is movably inserted in the front side of the hollow shell, the transmission rod is in transmission connection with the rotating rod through a bevel gear set, the bevel gear set comprises two sets of bevel gears which are meshed with each other, the bevel gear set is located in the hollow shell, the front end of the transmission rod movably penetrates through the front side of the assembling barrel, the front ends of the shaft bodies in the cleaning rollers movably penetrate through the front side guide ring, the front ends of the shaft bodies in the cleaning rollers are in transmission connection through a sprocket transmission set, the front end of the outer wall of the transmission rod is in transmission connection with the front end of the shaft body in one of the cleaning rollers through a sprocket transmission set, the sprocket transmission set I and the sprocket transmission set II are identical in structure and are composed of sprockets and chains.
Furthermore, a convex part is integrally formed in the middle of the left side of the guide ring, a T-shaped block is arranged on one side, opposite to the convex part, of the front side and the back side in a sliding mode through a longitudinal T-shaped sliding groove, the front side of the T-shaped block is fixed to the inner wall of the front side of the T-shaped sliding groove through a first spring, a receiving roller is arranged between the two sets of T-shaped blocks in a rotating mode through a shaft body, and filter screen cloth is further wound around the outer side of the receiving roller.
Further, the left side and the right side of the inner cavity of the protective shell are respectively provided with an unwinding roller and a winding roller in a rotating mode through longitudinal rotating rods, filter screen cloth is wound on the outer wall of the unwinding roller, the other end of the filter screen cloth bypasses the auxiliary roller, the carrying roller and the cleaning roller in the clockwise direction and penetrates through the bottom of the protective shell, and the other end of the filter screen cloth is wound on the outer wall of the winding roller.
Further, the protective housing rear side is all run through in the bull stick rear end of unreeling roller and wind-up roll, protective housing rear side outer wall middle part is fixed with drive arrangement, the bull stick of drive arrangement output and unreeling roller passes through three transmissions of sprocket feed group and connects, the bull stick of drive arrangement output and wind-up roll passes through the gear train transmission and connects, and the gear train is in three rear of sprocket feed group.
Furthermore, a sensor is fixed on the inner wall of the right side of the T-shaped chute in the convex part, an induction element matched with the sensor is fixed on the left side of the T-shaped block, the sensor is electrically connected with a controller, the controller is fixed in the protective shell, and the controller is electrically connected with a driving device.
Compared with the prior art, the invention has the beneficial effects that: when gas enters the assembly cylinder through the sampling pump, the gas entering from the arc-shaped sampling port is filtered through the filter screen cloth, when the filter screen cloth corresponding to the arc-shaped sampling port is full of impurities, the filter screen cloth drives the receiving roller to move inwards under the action of air flow, so that the sensor is in contact with the sensing element, the driving device is opened, the unwinding roller unwinds the filter screen cloth, the winding roller winds the filter screen cloth, the use position of the filter screen cloth is changed, the interference sampling stability caused by the blockage of the filter screen cloth corresponding to the arc-shaped sampling port is avoided, meanwhile, the follow-up impeller rotates when the gas flows to the sampling pipe, the transmission rod rotates through the rotating rod and the bevel gear set, the transmission rod synchronously rotates through the first sprocket transmission set and the second sprocket transmission set to clear the blocked part of the outer wall of the filter screen cloth, and after the unwinding of the filter screen cloth on the unwinding roller is finished, the drive arrangement antiport is opened to the accessible for unreeling the roller rolling filter screen cloth, the wind-up roll unreels the filter screen cloth and realizes recycling, has prolonged the device's life and the stability of long-term use greatly.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a perspective view of the guide assembly of the present invention;
FIG. 3 is a perspective view of the invention in partial cross-section in FIG. 2;
FIG. 4 is an enlarged view of structure A of FIG. 2 according to the present invention;
FIG. 5 is a rear perspective view of the filter assembly construction of the present invention;
fig. 6 is a perspective view of a filter assembly of the present invention in partial cross-section.
In the figure: 1. a receiving assembly; 11. assembling the cartridge; 12. an arc-shaped sampling port; 13. a follower impeller; 14. a sampling tube; 15. a hollow shell; 16. an electrical heating grid; 2. a guide assembly; 21. a transmission rod; 22. a chain wheel transmission group I; 23. a guide ring; 24. a cleaning roller; 25. an arc-shaped guide edge; 26. an auxiliary roller; 27. a first spring; 28. a receiving roller; 29. a sensor; 210. a chain wheel transmission group II; 211. a convex portion; 3. a filter assembly; 31. a protective shell; 32. a mounting frame; 33. a drive device; 34. a third chain wheel transmission group; 35. a gear set; 36. filtering net cloth; 37. unwinding rollers; 38. a wind-up roll; 39. and a controller.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-6, the present invention provides a sampling device for fixing non-methane total hydrocarbons in a pollution source (electrical components in the present invention are connected to an external power source through wires), including a receiving component 1, where the receiving component 1 includes an assembly cylinder 11, which plays a role of supporting and mounting structure, and the front end of the left side of the assembly cylinder 11 is provided with a communicated arc-shaped sampling port 12, which is convenient for sampling the non-methane total hydrocarbons, the rear end of the assembly cylinder 11 is provided with a communicated sampling tube 14, and the other end of the sampling tube 14 is connected to an input end of an external sampling pump, so that the non-methane total hydrocarbons can enter the assembly cylinder 11 through the external sampling pump to be sampled conveniently; the guide assembly 2 comprises two groups of guide rings 23, a guide effect is achieved on transmission of the filter screen cloth 36, the front guide ring 23 and the rear guide ring 23 are fixedly sleeved on the outer wall of the assembly cylinder 11, the two groups of guide rings 23 are respectively positioned in the front and the rear of the arc-shaped sampling opening 12, a plurality of groups of auxiliary rollers 26 are arranged between the two groups of guide rings 23 in a clockwise arc array through a shaft body in a rotating mode, a guide effect and an auxiliary effect are achieved on transmission of the filter screen cloth 36, a plurality of groups of cleaning rollers 24 are arranged between the two groups of guide rings 23 in an anticlockwise arc array through a shaft body in a rotating mode, cleaning of the filter screen cloth 36 can be achieved through rotation of the cleaning rollers 24, two groups of arc-shaped guide edges 25 are fixed at the left end of the top and the right end of the bottom of one side, opposite to the two groups of guide rings 23, sealing performance between the filter screen cloth 36 and the guide rings 23 is improved, and the arc-shaped guide edges 25 are positioned at the outer sides of the auxiliary rollers 26 and the cleaning rollers 24; filter assembly 3, filter assembly 3 is including the protective housing 31 that is in two sets of guide rings 23 tops, play the effect of supporting and mounting structure, can dismantle in one side of protective housing 31 and be provided with the cap, the side symmetry is fixed with mounting bracket 32 around the protective housing 31, and front and back side mounting bracket 32 is fixed with front and back side guide ring 23 respectively, and protective housing 31 bottom one end activity is run through and is had filter screen cloth 36, filter screen cloth 36 is used extensively in this area, do not do detailed description in addition here, get rid of the material of the big granule in the total hydrocarbon of non-methane, and filter screen cloth 36 other end is walked around supplementary roller 26 and cleaning roller 24 with clockwise and is run through the protective housing 31 bottom, protective housing 31 bottom both sides are seted up with filter screen cloth 36 complex movable mouthful.
Referring to fig. 1-3, a rotating rod is vertically and rotatably arranged in a rear cavity of an assembly cylinder 11, the rotating rod is rotatably arranged in the assembly cylinder 11 by adopting a bearing at the end part, the top and the bottom of the outer wall of the rotating rod are fixedly sleeved with a follow-up impeller, when an external sampling pump is turned on, when external air flows into a sampling tube 14, the follow-up impeller rotates, a hollow shell 15 is movably sleeved in the middle of the outer wall of the rotating rod through the bearing to play a role of protecting a bevel gear set, the side wall of the hollow shell 15 is fixed with the inner wall of the assembly cylinder 11 through a support, an electric heating net 16 is fixed in the inner cavity of the assembly cylinder 11 at the rear part of the rotating rod, and the electric heating net 16 heats gas in non-methane total hydrocarbon to avoid interference sampling of water vapor in the gas;
referring to fig. 1-3, a transmission rod 21 is movably inserted into the front side of the hollow shell 15, a bearing is disposed at the connection position of the transmission rod 21 and the hollow shell 15, the transmission rod 21 and the rotation rod are in transmission connection through a bevel gear set, so that the transmission rod 21 is driven to rotate by the bevel gear set when the rotation rod rotates, the bevel gear set is composed of two sets of engaged bevel gears, the bevel gear set is disposed in the hollow shell 15, the front end of the transmission rod 21 movably penetrates through the front side of the assembly barrel 11, the front ends of the shaft bodies in the multiple sets of cleaning rollers 24 movably penetrate through the front side guide ring 23, the front ends of the shaft bodies in the multiple sets of cleaning rollers 24 are in transmission connection through a sprocket transmission set one 22, which is widely used in the field and will not be described in detail herein, and the front end of the outer wall of the transmission rod 21 and the front end of the shaft body in one set of cleaning rollers 24 are in transmission connection through a sprocket transmission set two 210, the sprocket transmission set one 22 and the sprocket transmission set two 210 have the same structure, the chain wheel and the chain are combined, so that the chain wheel and the chain are widely applied in the field and are not detailed herein;
referring to fig. 1-3, a convex portion 211 is integrally formed in the middle of the left side of the guide ring 23 to serve as a support and mounting structure, a T-shaped block is slidably disposed on one side of the front and rear convex portions 211 opposite to each other through a longitudinal T-shaped sliding slot, the front side of the T-shaped block is fixed to the inner wall of the front side of the T-shaped sliding slot through a first spring 27, a receiving roller 28 is rotatably disposed between two sets of T-shaped blocks through a shaft body, and a filter mesh cloth 36 is further wound around the outer side of the receiving roller 28, so that the air inlet area is reduced as the filter mesh cloth 36 corresponding to the arc-shaped sampling port 12 is blocked with large-particle impurities, and the receiving roller 28 is gradually pressed by the filter mesh cloth 36 corresponding to the arc-shaped sampling port 12 to move inward.
Example 2
Referring to fig. 4-6, an unwinding roller 37 and a winding roller 38 are respectively rotatably disposed on the left side and the right side of the inner cavity of the protective shell 31 through longitudinal rotating rods, the unwinding roller 37 and the winding roller 38 play roles of winding up the filter screen cloth 36 and unwinding the filter screen cloth 36, the filter screen cloth 36 is wound on the outer wall of the unwinding roller 37, the other end of the filter screen cloth 36 bypasses the auxiliary roller 26, the receiving roller 28 and the cleaning roller 24 in a clockwise direction and penetrates through the bottom of the protective shell 31, the other end of the filter screen cloth 36 is wound on the outer wall of the winding roller 38, and the winding roller 38 winds up the filter screen cloth 36 and replaces the use position of the filter screen cloth 36 by enabling the unwinding roller 37 to unwind the filter screen cloth 36;
referring to fig. 4-6, the rear ends of the rotating rods in the unwinding roller 37 and the winding roller 38 movably penetrate through the rear side of the protective shell 31, a driving device 33 is fixed in the middle of the outer wall of the rear side of the protective shell 31, the driving device 33 is composed of a driving motor and a speed reducer, the output end of the driving device 33 is in transmission connection with the rotating rod of the unwinding roller 37 through a third sprocket transmission set 34, the third sprocket transmission set 34 is composed of a sprocket and a chain, the output end of the driving device 33 is in transmission connection with the rotating rod of the winding roller 38 through a gear set 35, the gear set 35 is two sets of gears meshed with each other, the gear set 35 is located behind the third sprocket transmission set 34, and the driving device 33 enables the unwinding roller 37 and the winding roller 38 to rotate in opposite directions;
referring to fig. 4-6, a sensor 29 is fixed on the inner wall of the right side of the T-shaped chute in the convex portion 211, an inductive element matched with the sensor 29 is fixed on the left side of the T-shaped block, the sensor 29 is electrically connected to a controller 39, the controller 39 is fixed in the protective shell 31, the controller 39 is electrically connected to the driving device 33, the filter mesh cloth 36 corresponding to the arc-shaped sampling port 12 gradually presses the receiving roller 28 to move inward so that the inductive element contacts with the sensor 29, and then the controller 39 is triggered, the controller 39 opens the driving device 33, so that the unwinding roller 37 unwinds the filter mesh cloth 36, and the winding roller 38 winds up the filter mesh cloth 36 to change the use position of the filter mesh cloth 36.
The rest of the structure was the same as in example 1
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A sampling device for immobilizing non-methane total hydrocarbons in a source of pollution, the sampling device comprising: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the receiving assembly (1), the receiving assembly (1) comprises an assembly cylinder (11), the front end of the left side of the assembly cylinder (11) is provided with an arc-shaped sampling port (12) communicated with the assembly cylinder, the rear end of the assembly cylinder (11) is provided with a sampling pipe (14) communicated with the assembly cylinder, and the other end of the sampling pipe (14) is connected with the input end of an external sampling pump;
the guide assembly (2), the guide assembly (2) comprises two groups of guide rings (23), the guide rings (23) on the front side and the rear side are fixedly sleeved on the outer wall of the assembly cylinder (11), the two groups of guide rings (23) are respectively positioned in the front and the rear of the arc sampling port (12), a plurality of groups of auxiliary rollers (26) are arranged between the two groups of guide rings (23) in a clockwise arc array manner through rotation of a shaft body, a plurality of groups of cleaning rollers (24) are arranged between the two groups of guide rings (23) in an anticlockwise arc array manner through rotation of the shaft body, two groups of arc guide edges (25) are fixed at the left end of the top and the right end of the bottom of one opposite side of the two groups of guide rings (23), and the arc guide edges (25) are positioned on the outer sides of the auxiliary rollers (26) and the cleaning rollers (24);
filter assembly (3), filter assembly (3) is including protective housing (31) that is in two sets of guide ring (23) tops, the side symmetry is fixed with mounting bracket (32) around protective housing (31), and front and back side mounting bracket (32) are fixed with front and back side guide ring (23) respectively, and protective housing (31) bottom one end activity is run through and is had filter screen cloth (36), and filter screen cloth (36) other end with clockwise around supplementary roller (26) and cleaning roller (24) and run through protective housing (31) bottom.
2. The sampling device of claim 1, wherein the sampling device is used for fixing non-methane total hydrocarbons in pollution sources, and is characterized in that: the vertical rotation of back chamber is provided with the bull stick in an assembly section of thick bamboo (11), and the outer wall top and the bottom of bull stick are all fixed the cover and are equipped with the follow-up impeller, and the outer wall middle part of bull stick is equipped with hollow shell (15) through bearing movable sleeve, and the lateral wall of hollow shell (15) passes through the support and is fixed with an assembly section of thick bamboo (11) inner wall, the position that an assembly section of thick bamboo (11) inner chamber and be in the bull stick rear is fixed with electric heating net (16).
3. The sampling device of claim 2, wherein the sampling device is used for fixing non-methane total hydrocarbons in pollution sources, and is characterized in that: the front side of the hollow shell (15) is movably inserted with a transmission rod (21), the transmission rod (21) is in transmission connection with the rotating rod through a bevel gear set, the bevel gear set is two sets of bevel gears which are meshed with each other, the bevel gear set is positioned in the hollow shell (15), the front end of the transmission rod (21) movably penetrates through the front side of the assembling barrel (11), the front ends of the shaft bodies in the cleaning rollers (24) movably penetrate through a front side guide ring (23), the front ends of the shaft bodies in the cleaning rollers (24) are in transmission connection through a first sprocket transmission set (22), the front ends of the outer walls of the transmission rod (21) and the front ends of the shaft bodies in one cleaning roller set (24) are in transmission connection through a second sprocket transmission set (210), and the first sprocket transmission set (22) and the second sprocket transmission set (210) are identical in structure and are composed of sprockets and chains.
4. A sampling device for fixing non-methane total hydrocarbons in a pollution source according to claim 3, characterized in that: a convex part (211) is integrally formed in the middle of the left side of the guide ring (23), a T-shaped block is arranged on one side, opposite to the convex part (211), of the front side and the back side in a sliding mode through a longitudinal T-shaped sliding groove, the front side of the T-shaped block is fixed to the inner wall of the front side of the T-shaped sliding groove through a first spring (27), a receiving roller (28) is arranged between the two groups of T-shaped blocks in a rotating mode through a shaft body, and the outer side of the receiving roller (28) is further bypassed by filter screen cloth (36).
5. The sampling device of claim 4, wherein the sampling device is used for fixing non-methane total hydrocarbons in pollution sources, and is characterized in that: protective housing (31) inner chamber left and right sides all rotates respectively through fore-and-aft bull stick and is provided with unwinding roller (37) and wind-up roll (38), and filter screen cloth (36) are convoluteed and are unreeled roller (37) outer wall, filter screen cloth (36) other end is walked around auxiliary roller (26), accept roller (28) and cleaning roller (24) and is run through protective housing (31) bottom with clockwise, filter screen cloth (36) other end is around establishing at wind-up roll (38) outer wall.
6. The sampling device of claim 5, wherein the sampling device is used for fixing non-methane total hydrocarbons in pollution sources, and is characterized in that: put the bull stick rear end in winding up roller (37) and winding up roller (38) and all move about and run through protective housing (31) rear side, protective housing (31) rear side outer wall middle part is fixed with drive arrangement (33), drive arrangement (33) output and the bull stick of unwinding roller (37) are connected through three (34) transmissions of sprocket feed group, the bull stick of drive arrangement (33) output and winding up roller (38) passes through gear train (35) transmission and connects, and gear train (35) are in three (34) backs of sprocket feed group.
7. The sampling device of claim 6, wherein the sampling device is used for fixing non-methane total hydrocarbons in pollution sources, and is characterized in that: a sensor (29) is fixed on the inner wall of the right side of the T-shaped sliding groove in the convex portion (211), an induction element matched with the sensor (29) is fixed on the left side of the T-shaped block, the sensor (29) is electrically connected with a controller (39), the controller (39) is fixed in a protective shell (31), and the controller (39) is electrically connected with a driving device (33).
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