Diesel engine waste gas comprehensive treatment device

Abstract

The utility model belongs to the field of diesel engine waste gas treatment equipment, and particularly relates to a diesel engine waste gas comprehensive treatment device which comprises a box body, a first partition plate and a second partition plate are fixed in the box body, the first partition plate and the second partition plate divide the box body into a dust removal box, a treatment box and a liquid storage box, and the treatment box is located between the dust removal box and the liquid storage box. A U-shaped pipe is arranged between the dust removal box and the treatment box in a communicating mode, an air inlet pipe is fixedly communicated with the side wall of the dust removal box, an air outlet pipe is fixed to the second partition plate, one end of the air outlet pipe is communicated with the treatment box, the other end of the air outlet pipe extends out of the box body, and a collecting groove is fixedly communicated with the bottom of the box body. A rotating shaft is rotationally connected into the dust removal box and penetrates through the first partition plate and the second partition plate. After fine particles are adsorbed by the electrostatic plate, the particles can be cleaned in time, so that the electrostatic plate always keeps an optimal adsorption effect, and the fine particles in waste gas can be cleaned more thoroughly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to diesel engine exhaust treatment equipment field, especially, it is related to a diesel engine exhaust comprehensive treatment device. BACKGROUND

[0002] The diesel engine is a kind of internal combustion engine with diesel as fuel, which generates high heat using compressed air, then injects atomized diesel, makes it burn and expand rapidly at high temperature and high pressure, thereby generating power.The pressure directly acts on the piston, pushes the piston to do non-uniform speed straight reciprocating motion along the cylinder, and the piston pin, connecting rod and crankshaft form a crank connecting rod mechanism, which converts the linear motion of the piston into the rotary motion of the crank, thereby outputting mechanical work, and a large amount of exhaust gas is generated during the operation of the diesel engine, which includes nitrogen oxides, sulfur oxides and particulate matter, etc., in order not to affect the environment, the diesel engine exhaust needs to be treated before being discharged.

[0003] The purification of diesel engine exhaust includes the following processes: using oxygen catalyst to oxidize carbon monoxide and hydrocarbons in exhaust gas into carbon dioxide and water vapor, using particulate filter to capture particulate matter in exhaust gas, and making exhaust gas react with urea solution to remove sulfur and nitrogen oxides.

[0004] The existing device, such as the ship diesel engine exhaust comprehensive treatment method and device disclosed in CN107754607B, removes particulate matter in exhaust gas by high-voltage electrostatic precipitator, and sprays oxidizing agent and lye through atomizing device to oxidize and remove sulfur and nitrogen oxides.

[0005] The existing device has the following disadvantages:

[0006] 1. When removing particulate matter in exhaust gas by electrostatic precipitation, the dust removal effect of electrostatic plate will be greatly reduced when more particulate matter is adsorbed on the electrostatic plate, thereby resulting in poor dust removal effect, and only by electrostatic precipitation, the effect of electrostatic precipitation on larger particulate matter is also general.

[0007] 2. In the prior art, the atomizing device remains stationary, and there is a spraying blind area when the atomizing device sprays oxidizing agent or lye, and when the exhaust gas passes through the spraying blind area, the harmful gases in the exhaust gas cannot be fully treated, resulting in poor exhaust gas purification effect. UTILITY MODEL CONTENTS

[0008] The utility model aims at the problems in the above background technology, and provides a diesel engine exhaust comprehensive treatment device.

[0009] To achieve the above object, the utility model adopts the following technical scheme: a diesel engine exhaust comprehensive treatment device, comprising:

[0010] The box is fixed with a first partition plate and a second partition plate inside, the first partition plate and the second partition plate divide the box into a dust removal box, a treatment box and a liquid storage box, the treatment box is located between the dust removal box and the liquid storage box, a U-shaped pipe is arranged in communication between the dust removal box and the treatment box, a gas inlet pipe is fixed in communication on the side wall of the dust removal box, a gas outlet pipe is fixed on the second partition plate, one end of the gas outlet pipe is in communication with the treatment box, the other end of the gas outlet pipe extends to outside the box, and a collection groove is fixed in communication at the bottom of the box.

[0011] Further, a rotating shaft is rotatably connected in the dust removal box, the rotating shaft penetrates the first partition plate and the second partition plate, and the rotating shaft is sealingly rotatably connected with the first partition plate and the second partition plate, and a dust removal assembly is further arranged in the dust removal box.

[0012] Further, the dust removal assembly comprises a plurality of sliding grooves formed on the rotating shaft, an electrostatic plate is slidably connected on the sliding groove, an annular plate is slidably connected on the lower surface of the first partition plate, a sliding rod is fixed on the annular plate, the sliding rod penetrates the electrostatic plate and is slidably connected with the electrostatic plate, a mounting plate is fixed on the sliding rod, a first electrode column is fixed on the mounting plate, and a second electrode column is arranged on the electrostatic plate opposite to the first electrode column.

[0013] Further, an arc-shaped plate is fixed on one side of the bottom of the dust removal box close to the gas inlet pipe, one end of the arc-shaped plate is provided with an arc-shaped surface, the first electrode column and the second electrode column are in contact to electrify the electrostatic plate when the electrostatic plate is above the arc-shaped plate, a first spring is sleeved on the sliding rod between the electrostatic plate and the mounting plate, and the two ends of the first spring are fixed on the electrostatic plate and the mounting plate respectively.

[0014] Further, the dust removal assembly further comprises a filter plate fixed on the U-shaped pipe, and a cleaning assembly for cleaning the filter plate is arranged in the dust removal box.

[0015] Further, the cleaning assembly comprises two ear seats fixed on the first partition plate, a movable rod is slidably connected on the ear seat, a scraping plate is fixed on one end of the movable rod close to the annular plate, a second spring is sleeved on the movable rod, a first arc-shaped protrusion is fixed on the scraping plate, and a second arc-shaped protrusion is fixed on the annular plate.

[0016] Further, a plurality of atomizing nozzles are rotatably connected on the second partition plate, a plurality of pump bodies are arranged in the liquid storage box, the water outlets of the pump bodies are fixedly connected in communication with the liquid inlets of the atomizing nozzles, and the liquid outlets of the atomizing nozzles extend to the treatment box through the second partition plate.

[0017] Further, an outer shell is fixed on the lower surface of the second partition plate, a first column gear is fixed on the rotating shaft in the outer shell, and a second column gear meshing with the first column gear is fixed on the atomizing nozzle.

[0018] Compared with the prior art, the diesel engine exhaust comprehensive treatment device has the advantages that:

[0019] 1、The diesel engine exhaust comprehensive treatment device utilizes the performance of the electrostatic plate that can adsorb fine particles after being electrified, the diesel engine exhaust is blown to the electrostatic plate from the dust removal box, the electrostatic plate above the arc-shaped plate is in an electrified state and the first spring thereon is in a compressed state, the electrostatic plate in the electrified state adsorbs the fine particles in the exhaust, when the exhaust is blown to the electrostatic plate, the electrostatic plate and the rotating shaft are driven to rotate around the axis of the rotating shaft, when the electrostatic plate above the arc-shaped plate is separated from the arc-shaped plate, the electrostatic plate is in a de-energized state and moves downward under the elastic force of the first spring and then vibrates up and down under the action of the spring until the spring returns to the natural state, the fine particles adsorbed on the electrostatic plate are separated from the electrostatic plate due to the vibration of the electrostatic plate and fall into the collecting groove, the fine particles adsorbed on the electrostatic plate can be cleaned in time, the electrostatic plate always maintains the best adsorption effect, and the fine particles in the exhaust are cleaned more thoroughly.

[0020] 2、The diesel engine exhaust comprehensive treatment device is provided with the filter plate, when the fine particles cleaned fly into the treatment box from the U-shaped pipe, the larger particles in the exhaust are blocked in the dust removal box by the filter plate, the particles in the exhaust are thoroughly cleaned through the double cleaning of the electrostatic plate and the filter plate, the dust removal effect is good, the diesel engine exhaust comprehensive treatment device is provided with the cleaning assembly, when the rotating shaft rotates, the scraper can be driven to move to scrape off the larger particles on the filter plate, and the filter plate is prevented from being blocked.

[0021] 3、The diesel engine exhaust comprehensive treatment device is provided with the first column gear and the second column gear on the rotating shaft and the atomizing nozzle respectively, when the rotating shaft rotates, the atomizing nozzle is driven to rotate under the action of the first column gear and the second column gear, the multiple rotating atomizing nozzles are arranged, the spraying of the atomizing nozzles has no blind area, harmful gases in the exhaust are fully treated, and the purification effect is improved.

[0022] 4、The diesel engine exhaust comprehensive treatment device utilizes the kinetic energy of the exhaust entering the dust removal box to drive the rotating shaft to rotate, the automatic cleaning of the electrostatic plate and the filter plate and the rotation of the atomizing nozzle are realized, no additional driving device needs to be additionally arranged, and the manufacturing cost of the equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure schematic view of the diesel engine exhaust comprehensive treatment device provided by the utility model;

[0024] Figure 2 is the internal structure schematic view of the box of the diesel engine exhaust comprehensive treatment device provided by the utility model;

[0025] Figure 3 is Figure 2 the enlarged view of A in the figure;

[0026] Figure 4It is the shell internal structure schematic view of a kind of diesel engine exhaust comprehensive treatment device provided by the utility model;

[0027] Figure 5 It is the dust removal subassembly partial structure schematic view of a kind of diesel engine exhaust comprehensive treatment device provided by the utility model;

[0028] Figure 6 It is Figure 5 The enlarged view of B in it.

[0029] In the figure, 1 box, 11 first baffle, 12 second baffle, 121 shell, 13 dust removal box, 14 treatment box, 15 liquid storage tank, 16 U-shaped pipe, 17 air inlet pipe, 18 air outlet pipe, 19 collection tank;

[0030] 21 rotating shaft, 211 sliding slot, 212 electrostatic plate, 22 annular plate, 23 sliding rod, 231 mounting plate, 232 first electrode column, 2121 second electrode column, 24 arc plate, 25 first spring, 26 filter plate, 260 ear seat, 261 movable rod, 262 scraper, 263 second spring, 264 first arc-shaped protrusion, 265 second arc-shaped protrusion;

[0031] 31 atomizing nozzle, 32 pump body, 33 first column gear, 34 second column gear. DETAILED DESCRIPTION

[0032] The following examples are for illustrative purposes only and are not intended to limit the scope of the utility model.

[0033] As Figures 1-6 Indicated, a kind of diesel engine exhaust comprehensive treatment device, including box 1, first baffle 11 and second baffle 12 are fixed in box 1, first baffle 11 and second baffle 12 divide box 1 into dust removal box 13, treatment box 14 and liquid storage tank 15, liquid storage tank 15 is loaded with urea solution, treatment box 14 is between dust removal box 13 and liquid storage tank 15, dust removal box 13 and treatment box 14 are communicated and are provided with U-shaped pipe 16, dust removal box 13 side wall is fixed and communicated with air inlet pipe 17, air inlet pipe 17 is equipped with oxidation reactor, second baffle 12 is fixed with air outlet pipe 18, one end of air outlet pipe 18 is communicated with treatment box 14, the other end of air outlet pipe 18 extends to the outside of box 1, box 1 bottom is fixed and communicated with collection tank 19, cleaning port is set on collection tank 19.

[0034] When working, diesel engine exhaust gas is oxidized after entering dust removal box 13 from air inlet pipe 17 through oxidation reactor, after removing particulate matter in dust removal box 13, exhaust gas enters treatment box 14 from U-shaped pipe 16, after desulfurization and denitrification to exhaust gas in treatment box 14, exhaust gas is discharged from air outlet pipe 18.

[0035] The dust removal box 13 is rotatably connected with a rotating shaft 21, the rotating shaft 21 penetrates the first partition plate 11 and the second partition plate 12, and the rotating shaft 21 is sealingly and rotatably connected with the first partition plate 11 and the second partition plate 12. The dust removal box 13 is also provided with a dust removal assembly, the dust removal assembly comprises a plurality of sliding grooves 211 formed in the rotating shaft 21, and an electrostatic plate 212 is slidingly connected with the sliding grooves 211. The lower surface of the first partition plate 11 is slidingly connected with an annular plate 22, the annular plate 22 is fixedly connected with a sliding rod 23, the sliding rod 23 penetrates the electrostatic plate 212 and is slidingly connected with the electrostatic plate 212, the sliding rod 23 is fixedly connected with a mounting plate 231, the mounting plate 231 is fixedly connected with a first electrode column 232, and the electrostatic plate 212 is provided with a second electrode column 2121 at a position opposite to the first electrode column 232. An arc-shaped plate 24 is fixedly connected to one side of the bottom of the dust removal box 13 close to the air inlet pipe 17, one end of the arc-shaped plate 24 is provided with an arc-shaped surface, the first electrode column 232 and the second electrode column 2121 are in contact when the electrostatic plate 212 is located above the arc-shaped plate 24, so that the electrostatic plate 212 is electrified, and a first spring 25 is sleeved on the sliding rod 23 between the electrostatic plate 212 and the mounting plate 231, and two ends of the first spring 25 are fixedly connected to the electrostatic plate 212 and the mounting plate 231 respectively.

[0036] In work, the first electrode column 232 and the second electrode column 2121 are connected with an external power supply, the electrostatic plate 212 located above the arc-shaped plate 24 is in an electrified state and the first spring 25 thereon is in a compressed state after the power supply is turned on. After the exhaust gas enters the dust removal box 13 from the air inlet pipe 17, the exhaust gas is blown to the electrostatic plate 212 in the electrified state, and the fine particles in the exhaust gas are adsorbed by the electrostatic plate 212. When the exhaust gas is blown to the electrostatic plate 212, the electrostatic plate 212 and the rotating shaft 21 are driven to rotate around the axis of the rotating shaft 21, so that the electrostatic plates located above the arc-shaped plate 24 are sequentially separated from the arc-shaped plate 24, and the electrostatic plates in a de-energized state are sequentially moved to above the arc-shaped plate 24 to be energized. When the electrostatic plate 212 in the energized state is separated from the arc-shaped plate 24, the electrostatic plate 212 moves downward under the action of the first spring 25, the first electrode column 232 and the second electrode column 2121 thereon are separated, so that the electrostatic plate 212 is de-energized, and the electrostatic plate 212 reciprocates up and down with the first spring 25 until the first spring 25 returns to a natural state. When the electrostatic plate 212 reciprocates up and down, the fine particles adsorbed thereon fall into the collecting groove 19.

[0037] The dust removal assembly further comprises a filter plate 26 fixed to the U-shaped pipe 16, and the dust removal box 13 is provided with a cleaning assembly for cleaning the filter plate 26. The cleaning assembly comprises two ear seats 260 fixed to the first partition plate 11, an movable rod 261 slidingly connected with the ear seats 260, a scraping plate 262 fixed to one end of the movable rod 261 close to the annular plate 22, a second spring 263 sleeved on the movable rod 261, a first arc-shaped protrusion 264 fixed to the scraping plate 262, and a second arc-shaped protrusion 265 fixed to the annular plate 22.

[0038] After the fine particles are cleaned, the exhaust gas enters the processing box 14 through the U-shaped pipe 16, and the larger particles in the exhaust gas are blocked in the dust removal box 13 by the filter plate 26, the second arc-shaped protrusion 265 is driven to rotate by the rotating shaft 21, the second arc-shaped protrusion 265 is in contact with the first arc-shaped protrusion 264, the scraper 262 is driven to move towards the ear seat 260 and compress the second spring 263, when the second arc-shaped protrusion 265 is separated from the first arc-shaped protrusion 264, the scraper 262 is reset under the action of the second spring 263, and the reciprocating movement of the scraper 262 is realized.

[0039] A plurality of atomizing nozzles 31 are rotatably connected to the second partition plate 12, a plurality of pump bodies 32 are arranged in the liquid storage tank 15, the water outlet of the pump body 32 is fixedly communicated with the liquid inlet of the atomizing nozzle 31, the liquid outlet of the atomizing nozzle 31 extends to the processing box 14 through the second partition plate 12, and the outer shell 121 is fixed to the lower surface of the second partition plate 12. The first cylindrical gear 33 is fixed to the rotating shaft 21 in the outer shell 121, and the second cylindrical gear 34 engaged with the first cylindrical gear 33 is fixed to the atomizing nozzle 31.

[0040] When working, the pump body 32 is started, the pump body 32 draws the urea solution in the liquid storage tank 15 into the atomizing nozzle 31, atomizes and sprays into the processing box 14, the first cylindrical gear 33 is driven to rotate by the rotating shaft 21, under the action of gear engagement, the second cylindrical gear 34 drives the atomizing nozzle 31 to rotate, and the exhaust gas entering the processing box 14 reacts with the urea solution sprayed by the atomizing nozzle 31 to remove nitrogen and sulfur.

[0041] The working principle of the utility model is as follows:

[0042] When working, the first electrode column 232 and the second electrode column 2121 are connected with an external power supply, and the pump body 32 is started, diesel engine exhaust gas enters the dust removal box 13 after being oxidized in the oxidation reactor from the air inlet pipe 17, the electrostatic plate 212 above the arc-shaped plate 24 is in an electrified state after the power supply is turned on, and the first spring 25 thereon is in a compressed state, the exhaust gas from the air inlet pipe 17 enters the dust removal box 13 and blows to the electrostatic plate 212 in the electrified state, the fine particles in the exhaust gas are adsorbed by the electrostatic plate 212, and the exhaust gas blows to the electrostatic plate 212 to drive the electrostatic plate 212 and the rotating shaft 21 to rotate around the axis of the rotating shaft 21, so that the electrostatic plates above the arc-shaped plate 24 are separated from the arc-shaped plate 24 one by one, and the electrostatic plates 212 in the de-energized state are moved to the arc-shaped plate 24 one by one. When the electrostatic plate 212 in the electrified state is separated from the arc-shaped plate 24, the electrostatic plate 212 moves downward under the action of the first spring 25, the first electrode column 232 and the second electrode column 2121 thereon are separated, so that the electrostatic plate 212 is de-energized, and the electrostatic plate 212 will reciprocate up and down with the first spring 25 until the first spring 25 returns to the natural state. When the electrostatic plate 212 vibrates up and down, the fine particles adsorbed thereon fall into the collecting groove 19, the electrostatic plate 212 can clean the particles in time after adsorbing the fine particles, so that the electrostatic plate 212 always maintains the best adsorption effect, and the fine particles in the exhaust gas are cleaned more thoroughly.

[0043] After the fine particles are cleaned, the exhaust gas enters the treatment box 14 through the U-shaped pipe 16, and the larger particles in the exhaust gas are blocked in the dust removal box 13 by the filter plate 26. When the rotating shaft 21 rotates, the second arc-shaped protrusion 265 rotates, and the second arc-shaped protrusion 265 drives the scraper 262 to move towards the ear seat 260 and compresses the second spring 263 when the second arc-shaped protrusion 265 contacts the first arc-shaped protrusion 264. When the second arc-shaped protrusion 265 is separated from the first arc-shaped protrusion 264, the scraper 262 resets under the action of the second spring 263, the scraper 262 moves back and forth to clean the filter plate 26, and the larger particles fall from the filter plate 26 into the collecting groove 19, so as to avoid the filter plate 26 from being blocked.

[0044] The pump body 32 draws the urea solution in the liquid storage tank 15 into the atomizing nozzle 31, and sprays the atomized urea solution into the treatment tank 14, the rotating shaft 21 drives the first column gear 33 to rotate, under the meshing of the gears, the second column gear 34 drives the atomizing nozzle 31 to rotate, the exhaust gas enters the treatment tank 14 from the U-shaped pipe 16, and reacts with the urea solution sprayed by the atomizing nozzle 31 to carry out denitration and desulfurization, a plurality of rotating atomizing nozzles 31 are arranged, so that the spraying of the atomizing nozzle 31 has no blind area, so that the harmful gas in the exhaust gas is fully treated, and the purification effect is improved, the kinetic energy of the exhaust gas entering the dust removal tank 13 drives the rotating shaft 21 to rotate, realizing the automatic cleaning of the electrostatic plate 212 and the filter plate 26 and the rotation of the atomizing nozzle 31, without the need of additionally adding a driving device, and the manufacturing cost of the equipment is reduced.

[0045] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A diesel engine exhaust gas integrated treatment device, characterized by comprising: Include: The box (1), the first partition (11) and the second partition (12) are fixed in the box (1), the first partition (11) and the second partition (12) divide the box (1) into dust removal tank (13), processing tank (14) and liquid storage tank (15), the processing tank (14) is located between the dust removal tank (13) and the liquid storage tank (15), the dust removal tank (13) and the processing tank (14) are provided with U-shaped pipe (16) between the communication, the sidewall of the dust removal tank (13) is fixedly connected with the air inlet pipe (17), the second partition (12) is fixedly connected with the air outlet pipe (18), one end of the air outlet pipe (18) is communicated with the processing tank (14), the other end of the air outlet pipe (18) extends to the outside of the box (1), the bottom of the box (1) is fixedly connected with the collecting groove (19); The dust removal tank (13) is rotatably connected with the rotating shaft (21), the rotating shaft (21) penetrates the first partition (11) and the second partition (12), the rotating shaft (21) is sealingly rotatably connected with the first partition (11) and the second partition (12), the dust removal tank (13) is further provided with a dust removal assembly; The dust removal assembly comprises a plurality of sliding grooves (211) formed on the rotating shaft (21), the sliding grooves (211) are slidably connected with the static plate (212), the lower surface of the first partition (11) is slidably connected with the annular plate (22), the annular plate (22) is fixedly connected with the sliding rod (23), the sliding rod (23) penetrates the static plate (212) and is slidably connected with the static plate (212), the sliding rod (23) is fixedly connected with the mounting plate (231), the mounting plate (231) is fixedly connected with the first electrode column (232), the static plate (212) is provided with the second electrode column (2121) at the position opposite to the first electrode column (232); The bottom of the dust removal tank (13) is fixedly connected with the arc-shaped plate (24) on one side close to the air inlet pipe (17), one end of the arc-shaped plate (24) is provided as an arc-shaped surface, when the static plate (212) is located above the arc-shaped plate (24), the first electrode column (232) and the second electrode column (2121) are in contact to electrify the static plate (212), the first spring (25) is sleeved on the sliding rod (23) between the static plate (212) and the mounting plate (231), and the two ends of the first spring (25) are fixed on the static plate (212) and the mounting plate (231) respectively.

2. The device according to claim 1, wherein The dust removal assembly further comprises a filter plate (26) fixed on the U-shaped pipe (16), and the dust removal tank (13) is provided with a cleaning assembly for cleaning the filter plate (26).

3. The device according to claim 2, wherein The cleaning assembly comprises two ear seats (260) fixed on the first partition (11), the ear seats (260) are slidably connected with the movable rod (261), the movable rod (261) is fixedly connected with the scraper (262) on one end close to the annular plate (22), the movable rod (261) is sleeved with the second spring (263), the scraper (262) is fixedly connected with the first arc-shaped protrusion (264), and the annular plate (22) is fixedly connected with the second arc-shaped protrusion (265).

4. The device according to claim 1, wherein A plurality of atomizing nozzles (31) are rotatably connected to the second partition plate (12), a plurality of pump bodies (32) are arranged in the liquid storage tank (15), the water outlet of the pump body (32) is fixedly communicated with the liquid inlet of the atomizing nozzle (31), and the liquid outlet of the atomizing nozzle (31) extends through the second partition plate (12) and into the processing tank (14).

5. The device according to claim 4, wherein A first column gear (33) is fixed to the rotating shaft (21) in the shell (121), and a second column gear (34) engaged with the first column gear (33) is fixed to the atomizing nozzle (31).

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