CN218206829U - Explosion-proof diesel engine tail gas processing apparatus - Google Patents

Abstract

The utility model provides an explosion-proof diesel engine tail gas treatment device, which comprises a washing tank, wherein the top of the washing tank is provided with an exhaust assembly for discharging the treated tail gas; the washing device also comprises a cooling box connected with the water washing box, and a water cooling chamber, an air inlet chamber and an air outlet chamber are limited in the cooling box; the air inlet cavity and the air outlet cavity are respectively positioned at two ends of the water cooling cavity in the length direction, and cooling water is circularly introduced into the water cooling cavity; a plurality of cooling pipes are arranged in the water-cooling cavity along the length direction of the water-cooling cavity, and two ends of each cooling pipe respectively extend into the air inlet cavity and the air outlet cavity; offer the air inlet that is used for connecting engine exhaust on the air inlet cavity, be connected with the intake pipe on the air outlet cavity, the one end that the air outlet cavity was kept away from to the intake pipe is inserted in the washing case and is extended to washing bottom of the case portion. The utility model discloses can realize the secondary heat dissipation to tail gas, the heat dissipation cooling efficiency is high, satisfies the mine diesel engine's in the pit explosion-proof requirement.

Description

Explosion-proof diesel engine tail gas processing apparatus

Technical Field

The utility model relates to an explosion-proof diesel engine technical field especially relates to an explosion-proof diesel engine tail gas processing apparatus.

Background

A large number of diesel engines are used in underground coal mines, and the diesel engines are designed to be explosion-proof due to the fact that the diesel engines are used in the underground severe environment. The diesel engine generates and discharges a large amount of tail gas in the running process, and the high-temperature tail gas is easy to ignite gas in a coal mine, damages engine parts and pollutes the environment, so the tail gas must be treated.

Under the circumstances, in order to avoid the explosion accident caused by the ignition of combustible gas by the high-temperature tail gas, the tail gas of the explosion-proof diesel engine needs to be cooled. Chinese patent CN 216588773U discloses an explosion-proof diesel engine cooling system assembly, it is the cooling of washing that directly lets in explosion-proof diesel engine tail gas in the tail gas washing case in the reality, because the space is less in the pit, tail gas washing case volume design is limited, tail gas is at incasement circulation, washing, refrigerated time is short, the cooling water of washing incasement is in temperature increasingly high to tail gas heat transfer process, lead to the temperature of tail gas to must not effectively cool off, in addition, high temperature tail gas still takes the aqueous vapor out of washing incasement easily. On one hand, the water in the washing tank is consumed too fast, and the tail gas can be cooled only by frequently adding water; on the other hand, the temperature of the exhaust gas cooled and discharged in the washing tank is still too high, combustible gas is easy to ignite, and potential safety hazards exist, so that the explosion-proof requirement of the diesel engine under the mine cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an explosion-proof diesel engine tail gas processing apparatus solves the current not good problem of explosion-proof diesel engine tail gas cooling radiating effect.

The technical scheme of the utility model is realized like this: the utility model provides an explosion-proof diesel engine tail gas treatment device, which comprises a washing tank, a water-discharging component and a water-discharging component, wherein the washing tank is used for washing introduced tail gas through cooling water stored in the washing tank;

the washing device also comprises a cooling box connected with the washing box, wherein a water cooling chamber, an air inlet chamber and an air outlet chamber are limited in the cooling box;

the air inlet cavity and the air outlet cavity are respectively positioned at two ends of the water cooling cavity in the length direction, and cooling water is circularly introduced into the water cooling cavity;

a plurality of cooling pipes are arranged in the water-cooling cavity along the length direction of the water-cooling cavity, one ends of the cooling pipes penetrate through the water-cooling cavity and extend into the air inlet cavity, and the other ends of the cooling pipes penetrate through the water-cooling cavity and extend into the air outlet cavity;

offer the air inlet that is used for connecting engine exhaust on the air inlet cavity, be connected with the intake pipe on the air outlet cavity, the one end that the air outlet cavity was kept away from to the intake pipe is inserted in the washing case and extends to washing bottom of the case portion.

On the basis of the technical scheme, preferably, the cooling pipes are arranged at equal intervals along the height direction of the cooling box, and a gap is formed between every two adjacent cooling pipes.

Further, preferably, the surface of the cooling pipe is provided with a plurality of radiating fins at equal intervals along the axial direction.

Furthermore, preferably, a water inlet connector is arranged on the outer side wall of one end of the water-cooling chamber close to the air outlet chamber, and a water outlet connector is arranged on the outer side wall of one end of the water-cooling chamber close to the air inlet chamber.

On the basis of the technical scheme, preferably, the one end of intake pipe is linked together with the center of the air outlet chamber, the intake pipe extends vertically towards the bottom of the water washing tank, the bottom end of the intake pipe is connected with a first plugging plate, and a plurality of first air vents are arranged on the side wall of the lower end of the intake pipe and the first plugging plate.

Further, preferably, the coaxial cover of intake pipe lower extreme periphery side is equipped with the barrel, and the lower extreme and the washing incasement bottom surface fixed connection of barrel have seted up a plurality of inhalant canal on the lower extreme lateral wall of barrel, and the upper end of barrel is fixed and is provided with the second shutoff board that is connected with the intake pipe lateral wall, the second shutoff board is located the first air vent top on the intake pipe lateral wall, has seted up a plurality of second air vents on the second shutoff board.

Furthermore, preferably, a cover body with a downward opening is fixedly arranged on the outer side wall of the air inlet pipe above the cylinder body, the inner diameter of the cover body is larger than the outer diameter of the cylinder body, and the lower end of the cover body extends towards the inner bottom surface of the water washing tank.

On the basis of the technical scheme, preferably, the bottom of the washing tank is provided with an air outlet, the exhaust assembly comprises an exhaust pipe, an air inlet of the exhaust pipe is connected with the air outlet, and a flame arrester is arranged on the air inlet of the exhaust pipe.

Further, preferably, a first water baffle is fixedly arranged in the water washing tank, the surface of the first water baffle inclines towards the direction of the air inlet pipe, the lower end of the first water baffle is fixedly connected with the inner side wall of the water washing tank, and the top end of the first water baffle extends towards the air outlet in the top surface of the water washing tank.

Furthermore, preferably, a second water baffle is further arranged between the top end of the first water baffle and the top surface of the washing tank, the upper end of the second water baffle is fixedly connected with one side, away from the air inlet pipe, of the air outlet, and the lower end of the second water baffle is fixedly connected with the top end of the first water baffle.

The utility model discloses following beneficial effect has for prior art:

(1) The utility model discloses an explosion-proof diesel engine tail gas processing apparatus, through setting up the cooler bin that is connected with the wash tank, and limited air inlet cavity, water-cooling cavity and air outlet cavity in order in the cooler bin, be provided with a plurality of cooling tubes along its length direction in the water-cooling cavity simultaneously, the both ends of cooling tube extend to in air inlet cavity and the air outlet cavity respectively, and connect the intake pipe on the air outlet cavity, make the intake pipe insert in the wash tank and extend to the wash tank bottom, through leading in the cooling water to the water-cooling cavity indoor circulation, explosion-proof engine diesel oil's tail gas enters into the air inlet cavity, and flow into the air outlet cavity through the cooling tube respectively, when tail gas flows in the cooling tube, can be carried out the cooling that once dispels the heat by the recirculated cooling water in the cooling cavity, the tail gas enters the wash tank through the intake pipe after the cooling, and is washed by the cooling water in the wash tank, and realize secondary heat dissipation cooling, realize the abundant heat dissipation of tail gas from this, satisfy the explosion-proof requirement of diesel engine under;

(2) The surface of the cooling pipe is provided with a plurality of radiating fins at equal intervals along the axial direction, so that the cooling pipe can fully utilize the radiating fins to exchange heat with cooling water, the heat exchange surface area is increased, and the tail gas in the cooling pipe is efficiently cooled;

(3) The outer side wall of one end, close to the air outlet cavity, of the water cooling cavity is provided with the water inlet joint, the outer side wall of one end, close to the air inlet cavity, of the water cooling cavity is provided with the water outlet joint, and the water inlet joint and the water outlet joint are connected with a heat dissipation system of the diesel engine, so that low-temperature water can cool low-temperature gas at one end, close to the air outlet cavity, of the cooling pipe at first and then cool high-temperature gas at one end, close to the air inlet cavity, of the cooling pipe at second, and therefore heat exchange temperature difference is kept uniform;

(4) The first blocking plate is arranged at the bottom end of the air inlet pipe, and the plurality of first vent holes are formed in the side wall of the lower end part of the air inlet pipe and the first blocking plate, so that tail gas can be blocked by the first blocking plate in the downward flowing process of the air inlet pipe, waste gas can be discharged along the first vent holes, on one hand, the uniform flowing of the gas is ensured, and on the other hand, large-volume bubbles can be broken into a plurality of small bubbles under the extrusion of the first vent holes, so that the bubbles can be fully cooled and heat exchanged by cooling water, and the heat exchange efficiency is improved;

(5) Through the arrangement of the cylinder, gas can be discharged from the first vent hole to form a plurality of small bubbles, the small bubbles are fully cooled and exchanged heat with cooling water in the water washing tank, the bubbles flow upwards in the water washing tank and are extruded and broken into a plurality of small bubbles when passing through the second vent hole in the second plugging plate, and further, the heat exchange between the gas and the cooling water is improved;

(6) The outer side wall of the air inlet pipe above the cylinder body is provided with the cover body with the opening facing to the cylinder body, so that gas discharged from the top of the cylinder body can flow downwards under the blocking of the cover body, the flow path of the gas in cooling water is delayed, the water washing time is delayed, and the heat exchange efficiency is improved;

(7) The flame arrester is arranged at the air inlet of the exhaust pipe, so that sparks mixed in gas can be removed, and the combustible gas in the mine can be prevented from being detonated by the discharged gas;

(8) The first water baffle which inclines towards the direction of the air inlet pipe is arranged in the water washing tank, so that the gas after being washed by water can be contacted with the first water baffle after rising upwards, the water vapor in the gas is condensed on the first water baffle and falls into the water washing tank, and the possibility of water vapor consumption is reduced;

(9) Through set up the second breakwater that is connected with first breakwater in washing case gas outlet department, can make gaseous smooth discharge through the gas outlet, can make the aqueous vapor in the gas after the top surface condenses in the washing case simultaneously, can follow the landing of second breakwater to the washing case, further reduce the consumption of aqueous vapor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic plane structure diagram of an explosion-proof diesel engine exhaust gas treatment device disclosed by the present invention;

fig. 2 isbase:Sub>A plan sectional view atbase:Sub>A-base:Sub>A of the present disclosure;

fig. 3 is a schematic perspective view of the cooling tube of the present invention;

FIG. 4 is an enlarged view of a portion B of FIG. 1;

reference numerals are as follows:

1. a water washing tank; 2. an exhaust assembly; 3. a cooling tank; 31. a water-cooled chamber; 32. an air intake chamber; 33. a gas outlet chamber; 34. a cooling tube; 321. an air inlet; 35. an air inlet pipe; 341. a heat dissipating fin; 311. a water inlet joint; 312. a water outlet joint; 351. a first closure plate; 350. a first air vent; 11. a cylinder body; 111. a water inlet channel; 112. a second closure plate; 110. a second vent hole; 12. a cover body; 10. an air outlet; 21. an exhaust pipe; 22. a flame arrestor; 13. a first water baffle; 14. and a second water baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in figure 1, the embodiment of the utility model discloses explosion-proof diesel engine tail gas processing apparatus, it includes washing case 1 for carry out the washing processing through the cooling water that the washing incasement is internal to store to the tail gas that lets in, washing case 1 top is provided with exhaust subassembly 2, is used for discharging the tail gas after handling.

Firstly, explosion-proof diesel engine tail gas directly lets in tail gas washing case 1 and carries out the washing cooling, because the space is less in the pit, washing case 1 volume design is restricted, and the cooling water volume that can hold in washing case 1 is limited. The time of tail gas at incasement circulation, washing, cooling is short, and the cooling water in washing case 1 is increasing the temperature to tail gas heat transfer in-process, leads to the temperature of tail gas not to effectively cool off, and the waste gas temperature after tail gas cooling emission in washing case 1 is still too high, ignites combustible gas easily, exists the potential safety hazard to can't satisfy the explosion-proof requirement of diesel engine in the pit.

For this reason, the present embodiment is based on the above problem, and is modified based on the water washing tank 1 proposed in the prior art, and specifically, the present embodiment further includes a cooling tank 3 connected to the water washing tank 1.

The cooling box 3 of this embodiment is defined with a water-cooling chamber 31, an air inlet chamber 32 and an air outlet chamber 33, specifically, the air inlet chamber 32 and the air outlet chamber 33 are respectively located at two ends of the water-cooling chamber 31 in the length direction, and the three chambers are independent from each other but connected to each other. The water-cooling chamber 31 is used for circulating and introducing cooling water, in this embodiment, the circulating water introduced into the water-cooling chamber 31 comes from a heat dissipation water tank of the diesel engine, and it can be understood that the heat dissipation water tank of the engine can provide circulating cooling water through air cooling.

A plurality of cooling pipes 34 are arranged in the water-cooling chamber 31 along the length direction thereof, one ends of the plurality of cooling pipes 34 penetrate through the water-cooling chamber 31 and extend into the air inlet chamber 32, and the other ends of the plurality of cooling pipes 34 penetrate through the water-cooling chamber 31 and extend into the air outlet chamber 33. This arrangement allows the intake chamber 32, the plurality of cooling pipes 34, and the discharge chamber 33 to communicate with each other in the horizontal direction.

An air inlet 321 used for connecting engine tail gas is formed in the air inlet chamber 32, an air inlet pipe 35 is connected to the air outlet chamber 33, and one end, far away from the air outlet chamber 33, of the air inlet pipe 35 is inserted into the water washing tank 1 and extends towards the bottom of the water washing tank 1.

Adopt above-mentioned technical scheme, through letting in the cooling water to the water-cooling chamber 31 inner loop, explosion-proof engine diesel's tail gas lets in air inlet chamber 32 through air inlet 321, and flow into air outlet chamber 33 through cooling tube 34 respectively, when tail gas flows in cooling tube 34, can be carried out the cooling that once dispels the heat by the recirculated cooling water in the cooling chamber, the tail gas enters into washing case 1 through intake pipe 35 after the cooling, and carry out the washing by the cooling water in washing case 1, and realize the secondary heat dissipation cooling, realize fully radiating of tail gas from this, the tail gas after the heat dissipation discharges through the exhaust subassembly 2 at washing case 1 top, satisfy mine diesel engine's explosion-proof requirement.

As some preferred embodiments, referring to fig. 2, a plurality of cooling pipes 34 are arranged at equal intervals in the height direction of the cooling box 3, and a gap is provided between each two adjacent cooling pipes 34. Therefore, the circulating cooling water in the water-cooling chamber 31 can cool each cooling pipe 34 synchronously, so that tail gas flowing in the plurality of cooling pipes 34 can be cooled uniformly.

As some preferred embodiments, referring to fig. 3, a plurality of heat dissipating fins 341 are provided on the surface of the cooling tube 34 at equal intervals in the axial direction thereof. From this setting, can make cooling tube 34 make full use of radiating fin 341 and cooling water carry out the heat transfer, improve heat transfer surface area to the realization carries out high efficiency cooling to the tail gas in the cooling tube 34.

In some preferred embodiments, a water inlet connector 311 is disposed on an outer side wall of the water-cooling chamber 31 near the air outlet chamber 33, and a water outlet connector 312 is disposed on an outer side wall of the water-cooling chamber 31 near the air inlet chamber 32. In this embodiment, the water inlet connector 311 and the water outlet connector 312 are connected to a heat dissipation system (a heat dissipation water tank) of the diesel engine, so that the low-temperature water cools the low-temperature gas at one end of the cooling pipe 34 close to the air outlet chamber 33, and then cools the high-temperature gas at one end of the cooling pipe 34 close to the air inlet chamber 32, thereby maintaining the uniform heat exchange temperature difference.

Because the tail gas in the intake pipe 35 lets in washing case 1 back, tail gas can upwards rise from the cooling water in the twinkling of an eye, and the washing cooling time is too short, and the tail gas bubble that lets in the intake pipe 35 is great usually, unable abundant and cooling water heat transfer, leads to tail gas heat transfer cooling effect poor in washing case 1.

Therefore, referring to fig. 4, in the present embodiment, one end of the air inlet pipe 35 is communicated with the center of the air outlet chamber 33, the air inlet pipe 35 extends vertically towards the bottom of the water washing tank 1, the bottom end of the air inlet pipe 35 is connected with a first blocking plate 351, and a plurality of first vent holes 350 are formed in the side wall of the lower end of the air inlet pipe 35 and the first blocking plate 351. From this setting, through set up first shutoff board 351 in intake pipe 35 bottom, and all be provided with a plurality of first air vents 350 on tip lateral wall and the first shutoff board 351 under intake pipe 35, can make tail gas follow intake pipe 35 downward flow in-process, be blockked by first shutoff board 351, make waste gas can follow first air vent 350 and discharge, on the one hand, guarantee that gas flow is even, on the other hand, can make the large-volume bubble break into a plurality of small bubbles under the extrusion of first air vent 350, make the bubble can be by the abundant cooling heat transfer of cooling water, improve heat exchange efficiency.

In order to further improve tail gas heat transfer cooling efficiency in washing case 1, this embodiment is equipped with barrel 11 at the coaxial cover of intake pipe 35 lower extreme periphery side, the lower extreme of barrel 11 and washing case 1 bottom fixed connection, a plurality of water inlet 111 have been seted up on the lower extreme lateral wall of barrel 11, the cooling water in the washing case 1 can enter into in the barrel 11 through water inlet 111, and fill inside intake pipe 35 lower extreme through first air vent 350, the fixed second shutoff board 112 that is connected with intake pipe 35 lateral wall that is provided with in upper end of barrel 11, second shutoff board 112 is located the first air vent 350 top on the intake pipe 35 lateral wall, a plurality of second air vent 110 have been seted up on the second shutoff board 112. By adopting the technical scheme, through the arrangement of the cylinder body 11, a plurality of small bubbles are formed after the gas is discharged from the first vent holes 350, the gas is fully cooled and exchanges heat with the cooling water in the water washing tank 1, the bubbles flow upwards in the water washing tank 1, and when passing through the second vent holes 110 on the second plugging plate 112, the bubbles are extruded again and broken into a plurality of small bubbles, and further, the heat exchange between the gas and the cooling water is improved.

In order to further improve the heat exchange cooling efficiency of tail gas in the washing tank 1, the cover body 12 with the opening facing the outer side wall of the air inlet pipe 35 above the cylinder body 11 is arranged on the outer side wall of the air inlet pipe, so that the air discharged from the top of the cylinder body 11 can flow downwards under the blocking of the cover body 12, the flowing path of the air in the cooling water is delayed, the washing time is delayed, and the heat exchange efficiency is improved.

It is noted that the cooling water in the water washing tank 1 may flood the cover 12, the cylinder 11 and a part of the intake pipe 35.

Tail gas is after the heat transfer cooling in washing case 1, when discharging, in order to avoid mixing with the spark in the tail gas, this embodiment sets up spark arrester 22 at the air inlet 321 of blast pipe 21, can remove the spark that mixes in the gas, and the tail gas of going out the spark passes through blast pipe 21 and discharges, avoids the combustion gas of combustion gas in to the mine to cause and detonates.

Because tail gas washing cooling back in washing case 1, upwards flow can take away some aqueous vapor, in order to avoid aqueous vapor direct discharge washing case 1 to cause the cooling water consumption, need frequently add the cooling water to washing case 1 in, cause explosion-proof diesel engine tail gas treatment effeciency to reduce. In the embodiment, the first water baffle 13 is fixedly arranged in the water washing tank 1, the surface of the first water baffle 13 inclines towards the air inlet pipe 35, the lower end of the first water baffle 13 is fixedly connected with the inner side wall of the water washing tank 1, and the top end of the first water baffle 13 extends towards the air outlet 10 on the top surface of the water washing tank 1. Therefore, the water-washed gas can be lifted upwards and then is contacted with the first water baffle 13, so that the water vapor in the gas is condensed on the first water baffle 13 and falls into the water washing tank 1, and the possibility of water vapor consumption is reduced.

Preferably, a second water baffle 14 is further arranged between the top end of the first water baffle 13 and the top surface of the washing tank 1, the upper end of the second water baffle 14 is fixedly connected with one side of the air outlet 10 far away from the air inlet pipe 35, and the lower end of the second water baffle 14 is fixedly connected with the top end of the first water baffle 13. Therefore, the gas can be smoothly discharged through the gas outlet 10, and meanwhile, the water vapor in the gas can slide into the water washing tank 1 along the second water baffle 14 after being condensed on the inner top surface of the water washing tank 1, so that the consumption of the water vapor is further reduced.

The utility model discloses a theory of operation is:

through letting in the cooling water to the water-cooling chamber 31 inner loop, the tail gas of explosion-proof engine diesel oil enters into air inlet chamber 32, and flow into air outlet chamber 33 through cooling tube 34 respectively, when tail gas flows in cooling tube 34, can be carried out the cooling of once dispelling the heat by the recirculated cooling water in the cooling chamber, the tail gas enters into washing case 1 through intake pipe 35 after the cooling, and carry out the washing by the cooling water in washing case 1, and realize the cooling of secondary heat dissipation, realize the abundant heat dissipation of tail gas from this, satisfy mine diesel engine's explosion-proof requirement.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An explosion-proof diesel engine tail gas treatment device comprises a water washing tank (1) for washing introduced tail gas with cooling water stored in the water washing tank (1), wherein an exhaust assembly (2) is arranged at the top of the water washing tank (1) and used for discharging the treated tail gas;

the method is characterized in that: the washing machine is characterized by further comprising a cooling box (3) connected with the washing box (1), wherein a water cooling cavity (31), an air inlet cavity (32) and an air outlet cavity (33) are defined in the cooling box (3);

the air inlet chamber (32) and the air outlet chamber (33) are respectively positioned at two ends of the water cooling chamber (31) in the length direction, and cooling water is circularly introduced into the water cooling chamber (31);

a plurality of cooling pipes (34) are arranged in the water-cooling chamber (31) along the length direction of the water-cooling chamber, one ends of the cooling pipes (34) penetrate through the water-cooling chamber (31) and extend into the air inlet chamber (32), and the other ends of the cooling pipes (34) penetrate through the water-cooling chamber (31) and extend into the air outlet chamber (33);

offer air inlet (321) that are used for connecting engine exhaust on intake chamber (32), be connected with intake pipe (35) on the chamber of giving vent to anger (33), the one end that chamber of giving vent to anger (33) was kept away from in intake pipe (35) inserted washing case (1) and extended to washing case (1) bottom.

2. The explosion proof diesel engine exhaust gas treatment device of claim 1, characterized in that: the cooling pipes (34) are arranged at equal intervals along the height direction of the cooling box (3), and a gap is formed between every two adjacent cooling pipes (34).

3. An explosion proof diesel engine exhaust gas treatment device according to claim 2, characterized in that: the surface of the cooling pipe (34) is provided with a plurality of radiating fins (341) at equal intervals along the axial direction.

4. The explosion proof diesel engine exhaust gas treatment device of claim 1, characterized in that: the water cooling device is characterized in that a water inlet connector (311) is arranged on the outer side wall of one end, close to the air outlet chamber (33), of the water cooling chamber (31), and a water outlet connector (312) is arranged on the outer side wall of one end, close to the air inlet chamber (32), of the water cooling chamber (31).

5. The explosion proof diesel engine exhaust gas treatment device of claim 1, characterized in that: the one end and the play air chamber (33) center department of intake pipe (35) are linked together, intake pipe (35) vertical extension is extended towards washing case (1) bottom, and intake pipe (35) bottom is connected with first shutoff board (351), all be provided with a plurality of first air vents (350) on tip lateral wall and the first shutoff board (351) under intake pipe (35).

6. An explosion proof diesel engine exhaust gas treatment device according to claim 5, characterized in that: intake pipe (35) lower extreme periphery side coaxial cover is equipped with barrel (11), and bottom surface fixed connection in the lower extreme of barrel (11) and washing case (1) has seted up a plurality of passageways of intaking (111) on the lower extreme lateral wall of barrel (11), and the fixed second shutoff board (112) that are connected with intake pipe (35) lateral wall that is provided with in upper end of barrel (11), second shutoff board (112) are located first air vent (350) top on intake pipe (35) lateral wall, have seted up a plurality of second air vents (110) on second shutoff board (112).

7. The explosion-proof diesel engine exhaust gas treatment device of claim 6, characterized in that: the washing machine is characterized in that a cover body (12) with a downward opening is fixedly arranged on the outer side wall of the air inlet pipe (35) above the barrel body (11), the inner diameter of the cover body (12) is larger than the outer diameter of the barrel body (11), and the lower end of the cover body (12) extends towards the inner bottom surface of the washing tank (1).

8. The explosion-proof diesel engine exhaust gas treatment device of claim 1, characterized in that: the water washing tank (1) bottom is provided with gas outlet (10), exhaust subassembly (2) include blast pipe (21), air inlet (321) of blast pipe (21) are connected with gas outlet (10), be provided with spark arrester (22) on air inlet (321) of blast pipe (21).

9. An explosion proof diesel engine exhaust gas treatment device according to claim 8, characterized in that: the water washing tank is characterized in that a first water baffle (13) is fixedly arranged in the water washing tank (1), the surface of the first water baffle (13) inclines towards the direction of an air inlet pipe (35), the lower end of the first water baffle (13) is fixedly connected with the inner side wall of the water washing tank (1), and the top end of the first water baffle (13) extends towards an air outlet (10) in the top surface of the water washing tank (1).

10. An explosion proof diesel engine exhaust gas treatment device according to claim 9, characterized in that: still be provided with second breakwater (14) between first breakwater (13) top and washing case (1) top surface, the one side fixed connection of intake pipe (35) is kept away from with gas outlet (10) in the upper end of second breakwater (14), the lower extreme of second breakwater (14) and the top fixed connection of first breakwater (13).

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