CN219915028U - Smoke sampling pretreatment device and sampling system thereof - Google Patents

Abstract

The utility model provides a smoke sampling pretreatment device and a sampling system thereof, wherein the smoke sampling pretreatment device comprises a gas washing cylinder, a dryer and an air pump, the gas washing cylinder, the dryer and the air pump are arranged in a case, an air inlet nozzle of the gas washing cylinder is used for receiving smoke in a flue, an air outlet nozzle of the gas washing cylinder is connected with an inlet of the dryer and is used for drying the smoke, and the air pump is used for providing power for sampling and air extraction. The utility model has simple structure and reasonable design, ensures the measurement of the gas collection volume of the dry flue gas, avoids the damage of high temperature, high humidity and gas corrosiveness to the instrument, and delays the positive effect of the service life of the smoke sampling instrument.

Description

Smoke sampling pretreatment device and sampling system thereof

Technical Field

The utility model relates to the field of environment-friendly detection, in particular to a smoke sampling pretreatment device and a sampling system thereof.

Background

In the industries of environmental protection, metallurgy, building materials, chemical industry, electric power and the like, in order to perform environmental evaluation, equipment design and transformation and working condition technical analysis, the smoke and fume emission condition of a chimney of a fixed pollution source industrial coal-fired boiler is often required to be monitored, and the smoke and fume concentration, the fume emission amount and the thermal parameters of related pipelines are measured. In the smoke testing technology, three instruments for smoke sampling methods exist in China currently: (1) predicting a flow velocity method; (2) a parallel sampling method; (3) a constant velocity tube method.

In the smoke sampling analysis process, when the smoke concentration is calculated, the smoke concentration is calculated by extracting the volume of dry smoke by an instrument; if the drying performance of the dryer is poor, the flue gas is insufficiently dried, the flue gas entering the flowmeter contains water vapor, the volume of the mixed water vapor can enable the volume measurement of the extracted dry flue gas to be inaccurate, and therefore the calculated flue gas and smoke concentration is inaccurate, and the result of the smoke and dust emission of the chimney is inaccurate. Furthermore, the smoke mixed with water vapor enters the gas path of the instrument, and the service life of a gas path sensor inside the instrument can be influenced, and even the instrument is damaged when serious.

The smoke sampling instrument is usually used in a severe environment, and is usually used on a chimney monitoring platform, instrument users need to carry the instrument to climb high, so that consumers want the instrument to be small in size and light in weight, some domestic manufacturers design the smoke sampling instrument into an integral body of an instrument host, an air pump and a drying bottle in order to cater to the psychological sense, the integral body is small in one-sided pursuing size and light in weight, no gas washing bottle is arranged, the drying bottle is small in capacity, and a plurality of defects are exposed after a certain time of application, such as: the air pump, the dryer and the instrument host are integrated, so that the weight is too concentrated, and the load climbing is inconvenient in practice; the air pump is not beneficial to heat dissipation in the instrument box; the drying bottle has small capacity and insufficient moisture absorption capacity, and the drying agent needs to be replaced frequently; the drying bottle is arranged inside the instrument, so that the color change of the drying agent of the dryer is inconvenient to observe; the dryer has small capacity and lacks a gas washing bottle, so that the high humidity and high temperature of the pumped flue gas and high corrosiveness influence the performance and the service life of the instrument.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the smoke sampling pretreatment device and the smoke sampling system, and the main machine of the smoke sampling instrument is separated from the gas washing cylinder, the dryer and the air pump on the premise of taking the small size, the light weight and the convenient use and maintenance of the smoke sampling instrument into consideration, the gas washing cylinder, the dryer and the air pump are integrated, the novel instrument is of dispersed weight, the gas washing cylinder is additionally arranged, and the dryer with strong drying capacity is designed to solve the problems.

The technical scheme provided by the utility model is as follows: the utility model provides a smoke and dust sampling preprocessing device, includes gas wash bottle, desicator and aspiration pump, gas wash bottle, desicator and aspiration pump set up in quick-witted incasement, the air inlet nozzle of gas wash bottle is arranged in receiving the flue gas in the flue, the air outlet nozzle of gas wash bottle is connected with the air inlet of desicator, and the gas outlet of desicator is used for being connected with the air inlet of smoke and dust sampling appearance host computer, the aspiration pump is used for being connected with the gas outlet of smoke and dust sampling appearance host computer, provides power for sampling and bleeding.

Further, the gas washing bottle comprises a bottle body and an end cover arranged above the bottle body, a water line is arranged on the bottle body, a gas inlet nozzle is arranged above the end cover and connected with a gas guide pipe in the bottle body through a first connecting head, a second connecting head is arranged above the end cover, a gas outlet nozzle is arranged on the second connecting head, the first connecting head axially presses the gas washing bottle through a first compression screw on the machine case, and the gas washing bottle is convenient to position in the machine case.

Further, be provided with screen plate subassembly and lower screen plate subassembly in the desicator, form the silica gel drying zone between last screen plate subassembly and the lower screen plate subassembly, form the gas-water separation room between the bottle end of lower screen plate subassembly and desicator, the side of gas-water separation room is provided with the mouth that admits air, and the top of desicator is provided with the apron, and the upper portion side of desicator is provided with the mouth that admits air, threaded hole is opened at the middle part of apron, has the plug screw through threaded connection.

Further, the annular groove is formed in the lower end face of the screw plug, an O-shaped sealing ring is arranged in the annular groove, wrench bolt holes for a special wrench to screw the screw plug are formed in two sides of the upper end face of the screw plug, a positioning counter bore is formed in the middle of the upper end face of the screw plug, and is used for axially pressing the dryer by a second pressing screw on the case, so that the dryer is positioned in the case conveniently, and the middle of the screw plug is hollowed out.

Further, the upper screen plate component and the lower screen plate component are respectively composed of a screen plate connecting body, a filter screen pressing plate and a fastening piece, the filter screen is arranged between the screen plate connecting body and the filter screen pressing plate, the fastening piece vertically penetrates through the screen plate connecting body and the filter screen pressing plate to connect the screen plate connecting body and the filter screen pressing plate together, and a plurality of round holes for ventilation are formed in the middle of the screen plate connecting body and the filter screen pressing plate.

Further, the filter screen is a 120 mesh 304 stainless steel screen, and the bottle body of the dryer is provided with scale marks.

Further, the aspiration pump comprises rotary vane pump, shaft coupling, motor and base, the base is fixed on the bottom plate of quick-witted case, the motor is installed on the base, the output of motor is provided with the shaft coupling, the shaft coupling is connected with the rotary vane pump, be provided with the extraction opening on the rotary vane pump, the extraction opening is connected with the rubber tube.

Further, be provided with first hold-down screw and second hold-down screw on the machine case, be used for the axial of gas wash bottle, desicator to compress tightly the location respectively, left side and the back of machine case are opened there is the viewing aperture for the colour change of silica gel in gas wash bottle operating condition and the desicator is observed to a plurality of directions.

Further, the top of machine case is provided with the handle, and the side is provided with supply socket, the aspiration pump is installed on the machine incasement right side, and the back of machine case and the machine case side that is close to the aspiration pump are provided with the shutter that is used for radiating, the base of aspiration pump passes through the fastener and is connected with the machine case bottom plate.

The utility model provides another technical scheme that: the utility model provides a smoke and dust sampling system, includes foretell smoke and dust sampling preprocessing device, still includes smoke and dust sampling pipe, temperature sensor, and smoke and dust sampling appearance host computer, temperature sensor sets up in the flue, smoke and dust sampling appearance host computer includes pressure sensor, flow sensor and central microprocessor, temperature sensor, pressure sensor and flow sensor are connected with central microprocessor respectively, sampling mouth on the smoke and dust sampling pipe and flue intercommunication, the export of smoke and dust sampling pipe is through the air inlet mouth of pipe connection to the gas-washing bottle, the gas-washing bottle give vent to anger mouth and the air inlet connection of desicator, the gas outlet and the air inlet connection of smoke and dust sampling appearance host computer of desicator, the gas outlet and the aspiration pump of smoke and dust sampling appearance host computer are connected, the motor and the central microprocessor controlled floodgate module of aspiration pump are connected.

The utility model has the beneficial effects that:

(1) Separating the air pump and the dryer from the smoke dust sampling instrument, dispersing weight, and facilitating climbing and carrying; the heat dissipation of the motor is facilitated, and the interference influence of vibration and heat of the air pump on a host circuit is avoided; faults are reduced, and maintenance of equipment is facilitated;

(2) After the dryer is separated from the main machine, the capacity of the dryer drying agent is increased, the capability of drying flue gas is improved, and the working time after single silica gel replacement is prolonged;

(3) The novel dryer is additionally provided with the water-vapor separation chamber, so that part of condensed water can be contained, and the burden of a drying agent is reduced; the ventilation is uniform, the utilization rate of the drying agent is improved, and the phenomenon of uneven moisture absorption of the drying agent is avoided;

(4) The gas washing bottle is additionally provided, has the functions of cooling, condensing, absorbing moisture and absorbing corrosive gas, and plays a positive role in reducing the burden of a drying agent and delaying the service life of the smoke sampling instrument.

Drawings

FIG. 1 is a front view of a soot sampling pretreatment device of the present utility model;

FIG. 2 is a right side view of the soot sampling pretreatment device of the present utility model;

FIG. 3 is a left side view of the smoke sampling pretreatment device of the present utility model;

FIG. 4 is a rear view of the smoke sampling pretreatment device of the present utility model;

FIG. 5 is a schematic diagram of the smoke sampling system of the present utility model;

FIG. 6 is a schematic view of the structure of the gas washing bottle of the present utility model;

FIG. 7 is a side view of FIG. 6;

fig. 8 is a schematic structural view of the dryer of the present utility model;

figure 9 is a schematic view of the structure of the lower screen deck assembly of the present utility model;

figure 10 is a schematic view of the structure of the upper screen deck assembly of the present utility model;

FIG. 11 is a schematic view of the structure of a cover plate of the dryer of the present utility model;

fig. 12 is a schematic view of the structure of a screw plug of the dryer of the present utility model;

FIG. 13 is a schematic view of the pump of the present utility model;

Detailed Description

The present utility model will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are shown in schematic, rather than physical, drawings, and are not to be construed as limiting the utility model, and wherein certain components of the drawings are omitted, enlarged or reduced in size, and do not represent the actual product size, so it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, and that all other embodiments obtained by those of ordinary skill in the art without making inventive efforts, based on the embodiments of the present utility model, are within the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "front", "rear", "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The smoke sampling pretreatment device as shown in fig. 1-13 comprises a gas washing bottle 1, a dryer 2 and a suction pump 3, wherein the gas washing bottle 1, the dryer 2 and the suction pump 3 are arranged in a case 4, a gas inlet nozzle of the gas washing bottle 1 is used for receiving smoke in a flue, a gas outlet nozzle of the gas washing bottle 1 is connected with a gas inlet of the dryer 2, a gas outlet of the dryer 2 is used for being connected with a gas inlet of a smoke sampling instrument host 5, and the suction pump 3 is used for being connected with a gas outlet of the smoke sampling instrument host 5 to provide power for sampling and pumping.

As shown in fig. 6-7, the gas washing bottle 1 includes a bottle 101 and an end cover 102 disposed above the bottle, a water line 103 is disposed on the bottle 101, a gas inlet nozzle 104 is disposed above the end cover 102, the gas inlet nozzle 104 is connected with a gas guide tube 106 in the bottle 101 through a first coupling head 107, a second coupling head 105 is disposed above the end cover 102, a gas outlet nozzle is disposed on the second coupling head 105, the first coupling head 107 axially compresses the gas washing bottle 1 through a first compression screw 401 on the case 4, so that the gas washing bottle 1 is positioned in the case 4 conveniently, and the material is transparent organic glass.

Specifically, a water level line is carved on the gas washing bottle to indicate the water quantity to be filled, and the water is filled in the water level line, so that the resistance of a gas path is increased, and the water which is turned over enters the next component under the action of negative pressure to influence the normal smoke dust sampling; too little water is filled, which can cause short circuit of air flow, insufficient heat capacity and adverse absorption of soluble gas. The distance between the air duct and the bottle bottom is about 2 cm, and the opening of the air duct is too high from the bottle bottom, which is unfavorable for the full contact of the smoke and the water, and has too low air outlet resistance and large influence on the normal smoke sampling.

As shown in fig. 8-12, an upper screen plate assembly 21 and a lower screen plate assembly 22 are arranged in the dryer 2, a silica gel drying area 23 is formed between the upper screen plate assembly 21 and the lower screen plate assembly 22, a gas-water separation chamber 24 is formed between the lower screen plate assembly 22 and the bottle bottom of the dryer 2, a gas inlet connector 25 is arranged on the side face of the gas-water separation chamber 24, a cover plate 26 is arranged above the dryer 2, a gas outlet connector 27 is arranged on the side face of the upper part of the dryer 2, a threaded hole is formed in the middle of the cover plate 26, and a screw plug 28 is connected through threads.

The screw plug 28 is made of organic glass. The annular groove 281 is formed in the lower end face of the screw plug 28, an O-shaped sealing ring 282 is arranged in the annular groove 281, wrench bolt holes 283 for screwing the screw plug by a special wrench are formed in the two sides of the upper end face of the screw plug 28, a positioning counter bore 284 is formed in the middle of the upper end face of the screw plug 28, and used for axially compressing the dryer 2 by a second compression screw 402 on the case 4, so that the dryer 2 is positioned in the case 4, and the middle of the screw plug 28 is hollowed out, thereby being beneficial to reducing weight.

The upper screen plate assembly 21 and the lower screen plate assembly 22 are respectively composed of a screen plate connector 211, a filter screen 212, a filter screen pressing plate 213 and a fastening piece 214, wherein the filter screen 212 is arranged between the screen plate connector 211 and the filter screen pressing plate 213, the fastening piece 214 vertically penetrates through the screen plate connector 211 and the filter screen pressing plate 213 to connect the screen plate connector 211 and the filter screen pressing plate 213 together, and a plurality of round holes for ventilation are formed in the middle of the screen plate connector 211 and the filter screen pressing plate 213.

The filter screen 212 is a 120 mesh 304 stainless steel screen, and the bottle body of the dryer 2 is provided with scale marks 29.

Specifically, except for a fastener, an O-shaped sealing ring and a filter screen, the other parts of the dryer material are processed and manufactured by transparent organic glass; except for the joint surfaces of the parts which have relative motion and are connected by the fasteners, the rest joint surfaces are bonded by chloroform.

The dryer bottle body is provided with a scale mark for indicating the quantity of the drying agent (blue silica gel) filled, which is the quantity of the drying agent required for normally completing smoke sampling of a flue section, the drying agent is preferably about 0.7 liter through a large quantity of smoke sampling practice, the scale mark is arranged at the fifth place of the bottle body, and spaces are arranged above and below the drying agent, so that the smoke uniformly passes through the upper sieve plate component and the lower sieve plate component, and the drying agent uniformly absorbs moisture. When the section of the bottle body of the dryer is fixed, excessive drying agents are filled in the bottle body, so that the resistance of a gas path is increased, the negative pressure of air suction is influenced, and normal constant-speed sampling cannot be performed; when the amount of the drying agent is too small, the moisture absorption capacity is insufficient, the color of the silica gel is changed from blue to red quickly, the moisture absorption capacity is lost, and the drying agent needs to be replaced frequently.

A space is arranged at the bottom of the dryer, so that the flue gas can uniformly pass through the lower sieve plate, and part of condensed water can be contained to play a role in gas-water separation, so that a gas-water separation chamber is formed.

The drier is filled in and poured out through the end cover opening of the drier; when the drier is filled, the screw plug is required to be screwed down, the lower end surface of the screw plug is designed with an annular groove, and an O-shaped sealing ring is arranged in the annular groove, so that a special spanner can be provided for further screwing down the screw plug for sealing, and air leakage is prevented. The bottle body of the drier is made of transparent organic glass material, so that the color change of the drier can be observed conveniently.

The lower sieve plate assembly shown in fig. 9 consists of a sieve plate connecting body (lower), a filter screen pressing plate (lower) and a fastening piece, wherein a plurality of round holes are formed in the middle of the sieve plate connecting body (lower) and the filter screen pressing plate (lower) and are used for uniform ventilation; the materials are all organic glass. The filter screen is a 120 mesh 304 stainless steel screen, and the filter screen is used for preventing the drying agent from leaking downwards. The lower part of the lower sieve plate connecting body structure is hollowed out, which is favorable for reducing the weight and increasing the space of the gas-water separation chamber.

The upper screen plate assembly shown in fig. 10 consists of a screen plate connecting body (upper), a filter screen pressing plate (upper) and a fastening piece, wherein a plurality of round holes are formed in the middle of the screen plate connecting body (upper) and the filter screen pressing plate (lower) and are used for uniform ventilation; the materials are all organic glass. The filter screen (upper) is a 120 mesh 304 stainless steel screen, and the filter screen (upper) is used for preventing the drying agent from escaping from the dryer.

As shown in fig. 13, the air pump 3 is composed of a rotary vane pump 301, a coupling 302, a motor 303 and a base 304, the base 304 is fixed on a bottom plate of the chassis 4, the motor 303 is mounted on the base 304, the coupling 302 is arranged at an output end of the motor 303, the coupling 302 is connected with the rotary vane pump 301, an air extraction opening 305 is arranged on the rotary vane pump 301, and the air extraction opening 305 is connected with a rubber tube 8.

In the smoke sampling process, the air pump controls the crystal gate module to output voltage to supply to the motor of the air pump according to the flow rate of the flue under the control of the central microprocessor, changes the flow rate of the air pump of the pump, tracks the change of the flow rate of the flue gas, and automatically controls the required air pumping flow rate in a closed loop.

The technical requirements of the air pump are as follows: and when the suction pump pumps 50L/min, the absolute value of the suction negative pressure is not less than 50kPa.

As shown in fig. 1-5, the case 4 is provided with a first compression screw 401 and a second compression screw 402, which are respectively used for axially compressing and positioning the gas washing bottle 1 and the dryer 2, so as to prevent jumping dislocation during operation, and the left side and the back of the case 4 are provided with observation ports 403 for observing the working condition of the gas washing bottle 1 and the color change of the silica gel in the dryer 2 in multiple directions. The gas washing bottle and the dryer are installed in and out from the front, and water and silica gel are convenient to replace.

The upper side of machine case 4 is provided with handle 404, and the side is provided with supply socket 405, aspiration pump 3 installs in the interior right side of machine case 4, and the back of machine case 4 and the machine case side that is close to aspiration pump 3 are provided with the shutter 406 that is used for the heat dissipation, the base of aspiration pump 3 passes through the fastener and is connected with machine case 4 bottom plate. The power socket is connected with a power connection port of the air pump by a wire.

The smoke sampling and sampling system shown in fig. 5 comprises the smoke sampling pretreatment device, and further comprises a smoke sampling tube 6, a temperature sensor 7 and a smoke sampling instrument host machine 5, wherein the temperature sensor 7 is arranged in a flue, the smoke sampling instrument host machine 5 comprises a pressure sensor, a flow sensor and a central microprocessor, the temperature sensor, the pressure sensor and the flow sensor are respectively connected with the central microprocessor, a sampling nozzle opening on the smoke sampling tube 6 is communicated with the flue, an outlet of the smoke sampling tube 6 is connected to an air inlet nozzle of a gas washing bottle 1 through a pipeline, an air outlet nozzle of the gas washing bottle 1 is connected with an air inlet of a dryer 2, an air outlet of the dryer 2 is connected with the air inlet of the smoke sampling instrument host machine 5, an air outlet of the smoke sampling instrument host machine 5 is connected with an air pump 3, and a motor of the air pump 3 is connected with a crystal gate module controlled by the central microprocessor.

In the smoke sampling instrument system, a pitot tube on an integrated smoke sampling tube is used for measuring dynamic pressure (namely, smoke flow rate) signals of a measuring point flue and transmitting the dynamic pressure signals into a central microprocessor of a host computer for operation, and the air extraction flow of an air extraction pump is controlled in a closed loop manner automatically, so that the air inlet flow rate of a sampling nozzle opening on the sampling tube is equal to the smoke flow rate of the measuring point flue, constant-speed smoke sampling is carried out, and the representativeness of a sampling sample is ensured. The sampling gas path connection method is shown in fig. 5. The flue gas entering the flue gas sampling pipe enters the gas inlet nozzle of the gas washing bottle through the pipeline, the flue gas enters water through the gas guide pipe inserted into water to obtain cooled and condensed water vapor, wash and absorb soluble gas (such as SO 2), the flue gas enters the gas-water separation chamber of the dryer through the gas outlet nozzle of the gas washing bottle under the action of negative pressure in the bottle, the moisture of part of the flue gas is separated under the action of the preceding stage cooling and condensing, the flue gas with the moisture reduced enters the main drying agent of the dryer, and the flue gas is fully dried under the action of the drying agent; the dry flue gas after passing through the dryer is connected with an air inlet of a main machine through a pipeline, and the flue gas flows through sensors such as temperature, pressure and flow in the pipeline inside the main machine to measure corresponding parameters; the air outlet of the instrument is connected with an air pump, and the air pump provides flow negative pressure required by sampling under the control of a central microprocessor.

The flue gas not only contains smoke dust, but also contains gases with various components, and the gases are toxic and corrosive, such as SO2, NO2 and the like, and the soluble gases in water can generate acidic substances under the action of the moisture of the flue gas SO as to corrode a sensor in an instrument. In the smoke testing technology, the gas collection volume of dry smoke sampled by smoke is required to be measured to calculate the smoke concentration, the smoke emission and the smoke emission of a flue in a standard state. The gas circuit of the smoke sampling instrument is provided with a temperature sensor, a pressure sensor and a flow sensor which are used for measuring state parameters. After dust is filtered by the front-end smoke sampling tube, the smoke enters a gas washing bottle of the smoke sampling pretreatment device, the gas is introduced into water, washed and cooled, soluble acid gas is absorbed, and then enters a dryer, moisture is fully absorbed by a drying agent, so that dry smoke is measured by a temperature sensor, a pressure sensor and a flow sensor, the measurement of the gas collection volume of the dry smoke is ensured, and the damage of high temperature, high humidity and gas corrosiveness to an instrument is avoided.

When the utility model is particularly used, the utility model,

1. preparation of the pretreatment device before sampling

(1) Filling tap water into the gas washing bottle according to the scale marks;

(2) The drier is filled with a drier (blue granular silica gel) according to the scale marks;

(3) Respectively loading the dryer and the gas washing bottle into a case, and fixing the case at corresponding positions;

2. the smoke sampling pretreatment device is connected into an instrument smoke sampling system, and pipelines are connected according to figure 5;

3. the smoke sampling tube is inserted into the flue, and simultaneously, the main machine of the smoke sampling instrument is started to enter a sampling state;

4. if the color of the silica gel is changed from blue to pink, the silica gel and water in the gas washing bottle need to be stopped for replacement;

5. and after the sampling is finished, taking out the gas washing bottle and the dryer, cleaning the gas washing bottle, pouring out the allochroic silica gel, and drying for later use.

The above description is merely illustrative of specific embodiments of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A smoke and dust sampling preprocessing device, its characterized in that: including gas wash bottle (1), desicator (2) and aspiration pump (3), gas wash bottle (1), desicator (2) and aspiration pump (3) set up in quick-witted case (4), the air inlet nozzle of gas wash bottle (1) is used for receiving the flue gas in the flue, the air outlet nozzle of gas wash bottle (1) is connected with the air inlet of desicator (2), and the gas outlet of desicator (2) is used for being connected with the air inlet of smoke and dust sampling appearance host computer (5), aspiration pump (3) are used for being connected with the gas outlet of smoke and dust sampling appearance host computer (5), provide power for sampling and bleeding.

2. The soot sampling pretreatment device according to claim 1, wherein: the gas washing bottle (1) comprises a bottle body (101) and an end cover (102) arranged above the bottle body, a water level line (103) is arranged on the bottle body (101), a gas inlet nozzle (104) is arranged above the end cover (102), the gas inlet nozzle (104) is connected with a gas guide tube (106) in the bottle body (101) through a first connecting head (107), a second connecting head (105) is arranged above the end cover (102), a gas outlet nozzle is arranged on the second connecting head (105), and the first connecting head (107) axially presses the gas washing bottle (1) through a first pressing screw (401) on a machine box (4) so as to facilitate positioning of the gas washing bottle (1) in the machine box (4).

3. The soot sampling pretreatment device according to claim 1, wherein: be provided with in desicator (2) and go up sieve subassembly (21) and lower sieve subassembly (22), go up and form silica gel drying zone (23) between sieve subassembly (21) and lower sieve subassembly (22), form gas-water separation room (24) between the bottle end of lower sieve subassembly (22) and desicator (2), the side of gas-water separation room (24) is provided with inlet tap (25), and the top of desicator (2) is provided with apron (26), and the upper portion side of desicator (2) is provided with outlet tap (27), threaded hole is opened at the middle part of apron (26), has plug screw (28) through threaded connection.

4. A smoke sampling pretreatment device according to claim 3, wherein: annular groove (281) has been seted up to terminal surface under plug screw (28), is furnished with "O" sealing washer (282) in annular groove (281), spanner bolt hole (283) that are used for special spanner to screw the plug screw have been seted up to the both sides of plug screw (28) up end, locating counter bore (284) have been seted up in the centre of plug screw (28) up end for second hold-down screw (402) axial compress tightly desicator (2) on quick-witted case (4), the location of desicator (2) in quick-witted case (4) of being convenient for, the fretwork in the middle of plug screw (28).

5. A smoke sampling pretreatment device according to claim 3, wherein: the upper screen plate assembly (21) and the lower screen plate assembly (22) are respectively composed of a screen plate connecting body (211), a filter screen (212), a filter screen pressing plate (213) and a fastening piece (214), the filter screen (212) is arranged between the screen plate connecting body (211) and the filter screen pressing plate (213), the fastening piece (214) vertically penetrates through the screen plate connecting body (211) and the filter screen pressing plate (213) to connect the screen plate connecting body and the filter screen pressing plate together, and a plurality of round holes for ventilation are formed in the middle of the screen plate connecting body (211) and the filter screen pressing plate (213).

6. The soot sampling pretreatment device according to claim 5, wherein: the filter screen (212) is a 120-mesh 304 stainless steel screen, and the bottle body of the dryer (2) is provided with scale marks (29).

7. The soot sampling pretreatment device according to claim 1, wherein: the air pump (3) comprises rotary vane pump (301), shaft coupling (302), motor (303) and base (304), base (304) are fixed on the bottom plate of quick-witted case (4), motor (303) are installed on base (304), the output of motor (303) is provided with shaft coupling (302), shaft coupling (302) are connected with rotary vane pump (301), be provided with extraction opening (305) on rotary vane pump (301), extraction opening (305) are connected with rubber tube (8).

8. The soot sampling pretreatment device according to claim 1, wherein: be provided with first compression screw (401) and second compression screw (402) on quick-witted case (4), be used for the axial of gas wash bottle (1), desicator (2) to compress tightly the location respectively, left side and the back of quick-witted case (4) are opened there is viewing aperture (403) for the colour change of silica gel in gas wash bottle (1) working condition and desicator (2) are observed to multiple directions.

9. The soot sampling pretreatment device according to claim 7, wherein: the novel heat dissipation device is characterized in that a lifting handle (404) is arranged above the case (4), a power socket (405) is arranged on the side face of the case, the air pump (3) is arranged on the right side in the case (4), a shutter (406) used for dissipating heat is arranged on the back face of the case (4) and the side face of the case close to the air pump (3), and a base of the air pump (3) is connected with a bottom plate of the case (4) through a fastener.

10. A smoke sampling system, characterized by: the smoke sampling pretreatment device comprises the smoke sampling pretreatment device according to any one of claims 1-9, and further comprises a smoke sampling tube (6), a temperature sensor (7) and a smoke sampling instrument host machine (5), wherein the temperature sensor (7) is arranged in a flue, the smoke sampling instrument host machine (5) comprises a pressure sensor, a flow sensor and a central microprocessor, the temperature sensor, the pressure sensor and the flow sensor are respectively connected with the central microprocessor, a sampling nozzle opening on the smoke sampling tube (6) is communicated with the flue, an outlet of the smoke sampling tube (6) is connected to an air inlet nozzle of a gas washing bottle (1) through a pipeline, an air outlet nozzle of the gas washing bottle (1) is connected with an air inlet of a dryer (2), an air outlet of the dryer (2) is connected with an air inlet of the smoke sampling instrument host machine (5), an air outlet of the smoke sampling instrument host machine (5) is connected with an air outlet of an air pump (3) through a pipeline, and a motor of the air pump (3) is connected with a crystal gate module controlled by the central microprocessor.