Waste gas purification device and purification method thereof

Abstract

The invention discloses a waste gas purification device and a purification method thereof. The waste gas purification device comprises a wet-type high-voltage electrostatic dust collector, and a purification main body is arranged on the left side of the wet-type high-voltage electrostatic dust collector; the purification main body comprises a lower water storage tank body, supporting legs are fixed to the four corners of the top of the lower water storage tank body, and an upper filter shell is fixed to the top faces of all the supporting legs; a vertical partition plate is fixed to the middle of the bottom face of a top plate of the upper filtering shell, the front wall face and the rear wall face of the vertical partition plate are welded and fixed to the inner side walls of the front wall plate and the rear wall plate of the upper filtering shell, and an air inlet through hole is formed in the top plate, on the left side of the vertical partition plate, of the upper filtering shell. Waste gas is firstly subjected to water-liquid filtration and then subjected to secondary filtration by the wet-type high-voltage electrostatic dust collector, so that the treatment load of the wet-type high-voltage electrostatic dust collector is reduced, the wet-type high-voltage electrostatic dust collector can operate normally, normal work of the wet-type high-voltage electrostatic dust collector is ensured, and the purification effect is greatly improved through secondary filtration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of purification and environmental protection equipment, and more particularly to a waste gas purification device and a purification method thereof. BACKGROUND

[0002] In the existing mechanical processing factory, various parts are produced in the production workshop, and the corresponding parts are subjected to welding processing. For example, in the existing heat exchanger, the heat exchange pipes and fins need to be welded. When welding, a large amount of waste gas is generated, which is directly discharged and affects the surrounding environment, and needs to be purified. The existing method is to externally set a wet high-voltage electrostatic precipitator, and the waste gas is directly treated by the wet high-voltage electrostatic precipitator to meet the requirements for discharge. However, when the amount of waste gas is large, the gas is directly filtered by the wet high-voltage electrostatic precipitator, which makes the load of the wet high-voltage electrostatic precipitator too large. After long-time use, the wet high-voltage electrostatic precipitator is prone to failure and damage, affecting the filtering and purification efficiency and effect. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art, and provides a waste gas purification device and a purification method thereof. The waste gas is first filtered by water, and then subjected to secondary filtration by a wet high-voltage electrostatic precipitator, thereby reducing the processing load of the wet high-voltage electrostatic precipitator, ensuring its normal operation, and greatly improving the purification effect through secondary filtration.

[0004] The solution to the technical problem of the present application is as follows: A waste gas purification device comprises a wet high-voltage electrostatic precipitator, and a purification main body is arranged on the left side of the wet high-voltage electrostatic precipitator. The purification main body comprises a lower water storage tank body, four legs are fixedly arranged at the four corners of the top of the lower water storage tank body, and an upper filter shell is fixed on the top surface of all the legs. A vertical partition plate is fixedly arranged on the bottom surface of the top plate of the upper filter shell, the front and rear walls of the vertical partition plate are welded and fixed on the inner side walls of the front and rear wall plates of the upper filter shell, an air inlet through hole is formed on the top plate of the upper filter shell on the left side of the vertical partition plate, the air inlet through hole is in communication with an air inlet pipe connected to the top plate of the upper filter shell, an air outlet through hole is formed on the top plate of the upper filter shell on the right side of the vertical partition plate, and the air outlet through hole is in communication with an air outlet pipe connected to the top plate of the upper filter shell. The other end of the air outlet pipe is connected to an air inlet on the lower side plate of the wet high-voltage electrostatic precipitator, an air outlet pipe is connected to the top of the wet high-voltage electrostatic precipitator, the air outlet of the air outlet pipe is connected to the air inlet of an air extractor fixed on the right side of the wet high-voltage electrostatic precipitator, and an exhaust pipe is connected to the air outlet of the air extractor. The left side of the inside of the lower water storage tank body is fixed with a front and back extending first partition plate, the first partition plate forms a water storage tank with the left side of the lower water storage tank body, the lower water storage tank body at the water storage tank is fixed with a water pump, the water inlet pipe of the water pump is in the water storage tank, the bottom end is close to the bottom surface of the water storage tank, the water outlet pipe of the water pump is connected with an outwardly extending connecting pipe, the top end of the connecting pipe is connected with the inlet of the first valve, the outlet of the first valve is connected with the upper connecting pipe, the top end of the upper connecting pipe is connected with the main water inlet of the upper part of the left side plate of the upper filter shell; The upper filter shell below the air inlet hole is installed with a stirring motor, the output shaft of the stirring motor is fixed with a stirring impeller, the stirring impeller stirs and mixes the entering gas and water liquid. The bottom plate of the upper filter shell is connected with two liquid discharge pipes, the bottom end of the liquid discharge pipe faces the lower water storage tank body.

[0005] The exhaust pipe is a vertically extending pipe body, and the gas outlet is at the top end.

[0006] The right side of the first partition plate of the lower water storage tank body is provided with a second partition plate, the right side of the second partition plate is provided with a left and right extending third horizontal partition plate, the bottom surface of the first partition plate, the second partition plate and the third horizontal partition plate is welded and fixed on the top surface of the bottom plate of the lower water storage tank body, the front and back side walls of the first partition plate and the second partition plate are welded and fixed on the inner side walls of the front and back of the lower water storage tank body, the left and right side walls of the third horizontal partition plate are welded and fixed on the inner side walls of the second partition plate and the right side plate of the lower water storage tank body. The first partition plate and the second partition plate form a water inlet tank, and the third horizontal partition plate divides the lower water storage tank body on the right side of the second partition plate into a transition tank at the rear and a water outlet tank at the front.

[0007] The upper side of the water storage tank and the water inlet tank is covered with an upper cover plate, the front and rear of the upper cover plate of the water inlet tank is formed with a through hole, the bottom end of the liquid discharge pipe connected with the front and rear of the middle part of the bottom plate of the upper filter shell is inserted into the corresponding through hole, the outer side wall is tightly attached to the inner side wall of the through hole, and the bottom end of the liquid discharge pipe is communicated with the water inlet tank; The water pump is fixed on the upper cover plate above the water storage tank, and the top end of the water outlet pipe of the water pump extends out of the top end of the through hole of the corresponding upper cover plate.

[0008] The rear lower part of the second partition plate is connected with a right extending water passing pipe, the water passing pipe extends into the transition tank, the second partition plate at the left side of the water outlet tank is connected with a left extending horizontal water outlet pipe, the left end of the horizontal water outlet pipe passes through the water inlet tank and extends out of the left end of the through hole formed in the first partition plate and communicates with the water storage tank, and the outer side wall of the horizontal water outlet pipe is welded and fixed on the inner side wall of the corresponding through hole of the first partition plate.

[0009] The right end of the horizontal water outlet pipe extends out of the right side wall of the second partition plate and communicates with the middle part through hole of the left side plate of the filter shell fixed on the right side wall of the second partition plate, the middle part of the right side plate of the filter shell is formed with a second middle part through hole, the inner cavity of the filter shell communicates with the middle part through hole and the second middle part through hole, the top end of the inner cavity extends out of the top surface of the filter shell, the rectangular shell with the metal mesh plate welded and fixed is inserted into the inner cavity, the outer side wall of the rectangular shell is inserted into the corresponding inner side wall of the inner cavity, the inside of the rectangular shell is filled with filter cotton, the top surface of the rectangular shell is fixed with a lifting plate, the top surface of the lifting plate is fixed with a holding rod.

[0010] The middle part of the third horizontal partition plate is formed with a center flow through hole, the rear wall surface of the third horizontal partition plate is welded and fixed with a vertical bent strip on the left and right sides of the center flow through hole, the opposite wall surfaces of the two vertical bent strips are formed with vertical insertion slots, the left part and the right part of the filter screen are inserted into the corresponding vertical insertion slots, the filter screen covers the center flow through hole, and the top surface of the filter screen is fixed with an upward facing vertical rod body.

[0011] The top of the water outlet groove is fixed with a floating ball type liquid level transmitter, and the floating ball type liquid level transmitter detects the water level at the water outlet groove.

[0012] The outlet of the first valve is connected to the water liquid filtering device; The water liquid filtering device comprises an intermediate transparent pipe body, outer threads are formed on the outer side walls of the top end and the bottom end of the intermediate transparent pipe body, radial annular limiting portions are formed on the outer side walls of the upper part and the lower part of the intermediate transparent pipe body, a lower connector is screwed on the outer threads of the lower part of the intermediate transparent pipe body, the top end of the lower connector is pressed against the bottom surface of the lower radial annular limiting portion, an inner annular portion is formed on the inner side wall of the lower part of the lower connector, a sealing ring is clamped between the top surface of the inner annular portion and the bottom end surface of the intermediate transparent pipe body, an upper connector is screwed on the outer threads of the top end of the intermediate transparent pipe body, the bottom end surface of the upper connector is pressed against the top surface of the upper radial annular limiting portion, an upper inner extension portion is formed on the inner side wall of the upper part of the upper connector, a sealing ring is clamped between the bottom surface of the upper inner extension portion and the top end of the intermediate transparent pipe body, a horizontal extension portion is formed on the inner side wall of the lower part of the upper inner extension portion, a downward extending limiting column is formed in the middle of the bottom surface of the horizontal extension portion, a plurality of flow through holes are formed in the edge portion of the horizontal extension portion, a filter screen sleeve is inserted into the intermediate transparent pipe body, the bottom surface of the radial ring formed on the outer side wall of the lower part of the filter screen sleeve is pressed against the top surface of the inner annular portion of the lower connector, the bottom surface of the limiting column is pressed against the top surface of the top end plate of the filter screen sleeve, and there is a spacing between the outer side wall of the filter screen sleeve and the inner side wall of the intermediate transparent pipe body. The bottom end of the lower connector is fixed on the outlet end of the first valve and communicates therewith, and the top end of the upper connector is fixed on the bottom end of the upper connecting pipe and communicates with the upper connecting pipe.

[0013] The left part and the right part of the bottom plate of the upper filtering shell are both inclined plate parts, the distal ends of the two inclined plate parts are high points, the proximal ends are low points, the bottom plate between the two inclined plate parts is a horizontal plate part, the bottom surfaces of the front part and the rear part are both welded and fixed with drainage pipes, the top ends of the drainage pipes are aligned with and communicated with the corresponding through holes of the horizontal plate part.

[0014] A horizontal water spraying connecting pipe is arranged between the left side plate of the upper filtering shell and the vertical partition plate, the left end and the right end of the horizontal water spraying connecting pipe are welded and fixed on the left side plate and the vertical partition plate of the upper filtering shell, the horizontal water spraying connecting pipe is communicated with the main water inlet, the top surface of the horizontal water spraying connecting pipe is a plane, and a plurality of water outlet through holes are formed in the top plate of the horizontal water spraying connecting pipe.

[0015] A plurality of cover plates are movably connected to the top surface of the top plate of the horizontal water spraying connecting pipe through hinge shafts, and the cover plates cover the top ends of the corresponding water outlet through holes.

[0016] A flow passage is formed between the bottom end of the vertical partition plate and the bottom plate of the upper filtering shell, a horizontal fixing plate is arranged below the horizontal water spraying connecting pipe, the horizontal fixing plate is fixed on the corresponding inner side walls of the vertical partition plate and the upper filtering shell, the horizontal fixing plate separates the upper filtering shell on the left side of the vertical partition plate into an upper cavity, a waterproof stirring motor is fixed in the middle of the bottom surface of the horizontal fixing plate, the top end of the output shaft of the stirring motor protrudes out of the top surface of the horizontal fixing plate and is fixed with a stirring impeller, an outer protective sealed shell is fixed in the middle of the bottom surface of the horizontal fixing plate, and the stirring motor is located in the outer protective sealed shell. A plurality of vertical through holes are formed in the horizontal fixing plate, a radially extending side edge part is fixed on the upper outer side wall of the outer protective sealed shell, a lifting sleeve body is inserted into the outer protective sealed shell, the top surface of the top plate of the lifting sleeve body is pressed against the bottom surface of the horizontal fixing plate and covers all the vertical through holes, the outer protective sealed shell is a cylindrical sleeve body, the outer side wall of the side edge part is close to the lower end inner side wall of the lifting sleeve body, vertical guide rods are fixed on the bottom surface of the edge part of the top plate of the lifting sleeve body, the vertical guide rods are inserted into the sleeve body fixed on the top surface of the side edge part, the sleeve body and the vertical guide rods are inserted into the stainless steel springs, and the top end of the stainless steel spring is stressed against the bottom surface of the top plate of the lifting sleeve body and the bottom end is stressed against the top surface of the side edge part.

[0017] Flow pipes are connected to the left side plate and the rear side plate of the outer protective sealed shell, the outer ends of the flow pipes are welded and fixed on the inner side walls of the corresponding side plates of the upper transition shell and communicated with the through holes of the side plates, filter screens are fixed on the outer side walls of the upper transition shell at the through holes and cover the corresponding through holes, a heat dissipation fan is fixed on one of the inner side walls of the outer protective sealed shell, and the air inlet of the heat dissipation fan covers the through hole of the side plate of the outer protective sealed shell corresponding to the corresponding flow pipe.

[0018] An observation through hole is formed on the front wall plate of the upper filter shell at the left upper portion of the vertical partition plate, a transparent observation window is fixed on the front wall surface of the front wall plate and covers the observation through hole.

[0019] An intermediate horizontal partition plate is fixed at the middle portion of the bottom surface of the intermediate horizontal partition plate, the front and rear side walls of the intermediate vertical plate are welded to the inner side walls of the front and rear wall plates of the upper filter shell, the bottom end of the intermediate vertical plate is welded to the top surface of the bottom plate of the upper filter shell, and a circulating air outlet through hole is formed at the right side of the intermediate vertical plate. An intermediate vertical plate is fixed at the middle portion of the bottom surface of the intermediate horizontal partition plate, the front and rear side walls of the intermediate vertical plate are welded to the inner side walls of the front and rear wall plates of the upper filter shell, the bottom end of the intermediate vertical plate is welded to the top surface of the bottom plate of the upper filter shell, and a circulating air outlet through hole is formed at the right side of the intermediate vertical plate. A liquid guide through hole is formed at the lower portion of the intermediate vertical plate, a bottom blocking plate is movably connected to the bottom left side wall of the intermediate vertical plate through a hinge shaft, the bottom blocking plate covers the liquid guide through hole, and an intermediate through hole is formed at the middle portion of the intermediate vertical plate.

[0020] An inspection through slot is formed on the front wall plate of the upper filter shell above the intermediate horizontal partition plate, and an inspection plate is fixed on the front wall surface of the front wall plate of the upper filter shell and covers the inspection through slot.

[0021] A purification method of a waste gas purification device, comprising the following steps: (1) The waste gas in the production workshop enters the upper filter shell through the air inlet pipe, and at the same time, the water pump in the lower water storage tank body operates to enter the water into the upper filter shell, which is mixed with the entering waste gas; (2) The mixed waste gas and water liquid are above the horizontal fixed plate, and the stirring motor operates to rotate the stirring impeller to stir the waste gas and water liquid above the horizontal fixed plate, realize mixing, and make the particulate matter in the waste gas mixed with the water liquid for filtration; (3) When the pressure of the waste gas and water liquid above the horizontal fixed plate is greater than the elastic force of all the stainless steel springs, the lifting sleeve body descends, the mixed water liquid and waste gas flow out from the bottom of the vertical through hole into the lower portion of the upper filter shell, the water liquid and the gas mixed in the water liquid flow from the liquid discharge pipe into the water inlet groove of the lower water storage tank body, and part of the filtered waste gas enters the right portion of the upper filter shell and is discharged into the wet type high-voltage electrostatic precipitator (20) through the operation of the circulating fan; (4) The wet type high-voltage electrostatic precipitator (20) performs secondary dust removal and filtration on the entering filtered waste gas, and the filtered waste gas becomes a gas meeting the emission requirements; (5) The gas is discharged from the exhaust pipe by the air extractor; (6), the filtered gas-water mixture entering the water tank is mixed again in the water tank to ensure that the particles in the gas are mixed into the water, and the gas-water mixture enters the transition tank; (7), part of the gas in the water in the transition tank is directly discharged, and the water containing particles is filtered through the filter screen and enters the water outlet tank; (8), the water in the water outlet tank is filtered through the rectangular shell and the filter cotton in the rectangular shell, and then enters the water storage tank; (9), the water in the water storage tank is sucked into the upper filter shell again by the water pump.

[0022] The outstanding effect of the present application is: Compared with the prior art, the present application first filters the waste gas with water, and then filters the waste gas with a wet high-voltage electrostatic precipitator, thereby reducing the processing load of the wet high-voltage electrostatic precipitator, ensuring normal operation of the wet high-voltage electrostatic precipitator, and greatly improving the purification effect.

[0023] Moreover, the waste gas and water are mixed and rotated by the stirring impeller to improve the mixing effect, ensure uniform mixing, and maximize the mixing of particulate matter in the waste gas in the water, so that the cleanliness of the filtered gas is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a partial structure diagram of the present application; Figure 2 is a partial structure diagram of the purification main body of the present application; Figure 3 is a partial enlarged view of Figure 2 ; Figure 4 is a partial enlarged view of another part of Figure 2 ; Figure 5 is a partial top view of the lower water storage tank body; Figure 6 is a partial structure diagram of the water filtering device. DETAILED DESCRIPTION

[0025] In an embodiment, as shown in Figures 1 to 6 , a waste gas purification device includes a wet high-voltage electrostatic precipitator 20, and the left side of the wet high-voltage electrostatic precipitator 20 is provided with a purification main body 10. The purification main body 10 includes a lower water storage tank body 11, and four legs are fixed at the top of the four corners of the lower water storage tank body 11. The bottom middle of the top plate of the upper filtering shell 12 is fixed with a vertical partition plate 121, the front and back walls of the vertical partition plate 121 are welded and fixed on the inner side walls of the front and back wall plates of the upper filtering shell 12, the left side of the vertical partition plate 121 is formed with an air inlet through hole 122 on the top plate of the upper filtering shell 12, the air inlet through hole 122 is communicated with the air inlet pipe 1 connected to the top plate of the upper filtering shell 12 (the middle part of the air inlet pipe 1 is fixed with an air suction fan to realize air suction), the right side of the vertical partition plate 121 is formed with an air outlet through hole 123 on the top plate of the upper filtering shell 12, the air outlet through hole 123 is communicated with the air outlet pipe 2 connected to the top plate of the upper filtering shell 12; The other end of the air outlet pipe 2 is connected to the air inlet of the lower side plate of the wet type high-voltage electrostatic precipitator 20, the air outlet of the top of the wet type high-voltage electrostatic precipitator 20 is connected with the upper air outlet pipe 21, the air outlet of the upper air outlet pipe 21 is connected to the air inlet of the exhaust fan 30 fixed on the right side of the wet type high-voltage electrostatic precipitator 20, and the air outlet of the exhaust fan 30 is connected with the exhaust pipe 31; the exhaust fan 30 of the embodiment adopts a centrifugal fan.

[0026] The inside of the lower water storage tank body 11 is fixed with a first partition plate 111 extending front and back on the left side, the first partition plate 111 forms a water storage tank with the left side of the lower water storage tank body 11, the lower water storage tank body 11 is fixed with a water pump 112 at the water storage tank, the water inlet pipe of the water pump 112 is in the water storage tank, the bottom end of which is close to the bottom surface of the water storage tank, the water outlet pipe of the water pump 112 is connected with an outwardly extending connecting pipe 113, the top end of the connecting pipe 113 is connected to the inlet of the first valve 3, the outlet of the first valve 3 is connected to the upper connecting pipe, and the top end of the upper connecting pipe is connected to the main water inlet on the upper part of the left side plate of the upper filtering shell 12; The upper filtering shell 12 is installed with a stirring motor 13 below the air inlet through hole 122, a stirring impeller 14 is fixed on the output shaft of the stirring motor 13, and the stirring impeller 14 stirs and mixes the entering gas and water liquid; The bottom plate of the upper filtering shell 12 is connected with two liquid discharge pipes 15, and the bottom end of the liquid discharge pipe 15 faces the lower water storage tank body 11.

[0027] Further, the exhaust pipe 31 is a vertically extending pipe body, and the air outlet is at the top end.

[0028] Further, the right side of the first partition plate 111 of the lower water storage tank body 11 is provided with a second partition plate 114, the right side of the second partition plate 114 is provided with a third horizontal partition plate 115 extending leftward and rightward, the bottom surface of the first partition plate 111, the second partition plate 113 and the third horizontal partition plate 115 is welded and fixed on the top surface of the bottom plate of the lower water storage tank body 11, the front and back side walls of the first partition plate 111 and the second partition plate 114 are welded and fixed on the inner side walls of the front and back inner side walls of the lower water storage tank body 11, and the left and right side walls of the third horizontal partition plate 115 are welded and fixed on the inner side walls of the second partition plate 114 and the right side plate of the lower water storage tank body 11. The first partition plate 111 and the second partition plate 114 form a water inlet groove therebetween, and the third horizontal partition plate 115 divides the lower water storage tank body 11 on the right side of the second partition plate 114 into a transition groove at the rear and a water outlet groove at the front. The lower part of the rear wall plate at the transition groove is connected with a waste water drainage connector, and a valve is connected on the waste water drainage connector, which can be communicated with a waste water filtering device through a connecting pipe. When it is needed to discharge waste water and replace water, the valve can be opened to make the waste water enter the waste water filtering device for treatment. The waste water filtering device is a device that can be purchased on the market, and will not be described in detail here. Meanwhile, the upper part of the rear wall plate at the transition groove is connected with a water inlet pipe, and the outer end of the water inlet pipe is connected with a valve, which is communicated with a corresponding water connection pipe. After the waste water is discharged, the valve of the water inlet pipe can be opened to make clean water enter the transition groove and flow into the entire lower water storage tank body 11 to realize water filling.

[0029] Further, the upper part of the water storage tank and the water inlet groove are covered with an upper cover plate 5 (which is a detachable plate body), and the front and back parts of the upper cover plate 5 of the water inlet groove are formed with through holes. The bottom end of the liquid discharge pipe 15 connected to the middle part of the bottom plate of the upper filtering shell 12 is inserted into the corresponding through hole, and the outer side wall of the liquid discharge pipe 15 is tightly attached to the inner side wall of the through hole. The bottom end of the liquid discharge pipe 15 is communicated with the water inlet groove. The water pump 112 is fixed on the upper cover plate 5 above the water storage tank, and the top end of the water outlet pipe of the water pump 112 extends out of the top end of the through hole of the corresponding upper cover plate 5.

[0030] Further, the lower part of the rear part of the second partition plate 114 is connected with a water passing pipe 6 extending rightward, the water passing pipe 6 extends into the transition groove. The second partition plate 114 at the left side of the water outlet groove is connected with a horizontal water outlet pipe 7 extending leftward, the left end of the horizontal water outlet pipe 7 extends out of the left end of the through hole formed on the first partition plate 111 and is communicated with the water storage tank after passing through the water inlet groove, and the outer side wall of the horizontal water outlet pipe 7 is welded and fixed on the inner side wall of the corresponding through hole of the first partition plate 111.

[0031] The right end of the horizontal water outlet pipe 7 extends out of the right side wall of the second partition plate 114 and communicates with the middle part through hole of the left side plate of the filter shell 40 fixed on the right side wall of the second partition plate 114. The middle part of the right side plate of the filter shell 40 is formed with a second middle part through hole. The inner cavity of the filter shell 40 communicates with the middle part through hole and the second middle part through hole. The top end of the inner cavity extends out of the top surface of the filter shell 40. The metal mesh plate is fixedly welded to the rectangular shell which is inserted into the inner cavity with the outer side wall of the rectangular shell fitting into the corresponding inner side wall of the inner cavity. The inside of the rectangular shell is filled with filter cotton. The top surface of the rectangular shell is fixed with a lifting plate. The top surface of the lifting plate is fixed with a holding rod.

[0032] When the water liquid filter device is used for a certain period of time, the holding rod can be held to lift the rectangular shell out of the filter shell 40. Then, the rectangular shell can be disassembled from the lifting plate (fixed by bolts) and replaced with new filter cotton.

[0033] Further, the third horizontal partition plate 115 is formed with a center flow through hole 116 in the middle part. The vertical bent strips 117 are fixedly welded to the left and right sides of the center flow through hole 116. The opposite side walls of the two vertical bent strips 117 are formed with vertical insertion slots. The left and right parts of the filter screen 118 are inserted into the corresponding vertical insertion slots. The filter screen 118 covers the center flow through hole 116. The top surface of the filter screen 118 is fixed with an upwardly facing vertical rod. After being used for a certain period of time, the filter screen 118 can be lifted out of the two vertical bent strips 117, washed and then used again.

[0034] The top part of the water outlet groove is fixed with a floating ball type liquid level transmitter 119 which detects the water level in the water outlet groove.

[0035] In the above structure, the water liquid containing particles, i.e. waste water, entering from the water inlet groove first flows into the transition groove, is filtered by the filter screen 118 for the first time, and a large amount of particles are left in the transition groove (which can be manually fished out by a net bag and the sludge formed by the particles can be removed after being used for a certain period of time). Then, the water liquid enters the water outlet groove and is filtered by the rectangular shell and the filter cotton inside for the second time and then enters the water storage groove to be sucked and used.

[0036] Further, the outlet of the first valve 3 is connected to the water liquid filter device 50. The water liquid filtering device 50 comprises an intermediate transparent tube body 51, outer threads are formed on the outer side walls of the top end and bottom end of the intermediate transparent tube body 51, radial annular limiting portions are formed on the outer side walls of the upper portion and lower portion of the intermediate transparent tube body 51, a lower connecting head 52 is screwed on the outer threads of the lower portion of the intermediate transparent tube body 51, the top end of the lower connecting head 52 is pressed against the bottom surface of the lower radial annular limiting portion, an inner annular portion is formed on the inner side wall of the lower portion of the lower connecting head 52, a sealing ring is clamped between the top surface of the inner annular portion and the bottom end surface of the intermediate transparent tube body 51, an upper connecting head 53 is screwed on the outer threads of the top end of the intermediate transparent tube body 51, the bottom end surface of the upper connecting head 53 is pressed against the top surface of the upper radial annular limiting portion, an upper inner extending portion is formed on the inner side wall of the upper portion of the upper connecting head 53, a sealing ring is clamped between the bottom surface of the upper inner extending portion and the top end of the intermediate transparent tube body 51, a horizontal extending portion is formed on the inner side wall of the lower portion of the upper inner extending portion, a limiting column extending downward is formed in the middle of the bottom surface of the horizontal extending portion, a plurality of flow-through holes 54 are formed in the edge portion of the horizontal extending portion, a filter screen sleeve 55 is inserted into the intermediate transparent tube body 51, the bottom surface of the radial ring formed on the outer side wall of the lower portion of the filter screen sleeve 55 is pressed against the top surface of the inner annular portion of the lower connecting head 52, the bottom surface of the limiting column is pressed against the top surface of the top end plate of the filter screen sleeve 55, and there is a spacing between the outer side wall of the filter screen sleeve 55 and the inner side wall of the intermediate transparent tube body 51. The bottom end of the lower connecting head 52 is fixed on the outlet end of the first valve 3 and communicates with the first valve 3, and the top end of the upper connecting head 53 is fixed on the bottom end of the upper connecting pipe and communicates with the upper connecting pipe.

[0037] The above structure is a third filtration of the water liquid entering the upper filter shell 12, which is filtered by the filter screen sleeve 55 for the third time and then enters the upper filter shell 12 for mixed filtration.

[0038] Wherein, after a certain period of use, the water liquid filtering device 50 needs to be disassembled, the lower connecting head 52 or the upper connecting head 53 is disassembled, and the filter screen sleeve 55 can be disassembled and replaced.

[0039] Further, the left portion and the right portion of the bottom plate of the upper filter shell 12 are both inclined plate portions, the distal ends of the two inclined plate portions are high points, the proximal ends are low points, the bottom plate between the two inclined plate portions is a horizontal plate portion, the bottom surfaces of the front portion and the rear portion are both welded and fixed with drainage pipes 15, and the top ends of the drainage pipes 15 are aligned with and communicate with the corresponding through holes of the horizontal plate portion.

[0040] Further, a horizontal water spraying connecting pipe 60 is arranged between the left side plate of the upper filtering shell 12 and the vertical partition plate 121, the left end and the right end of the horizontal water spraying connecting pipe 60 are welded and fixed on the left side plate of the upper filtering shell 12 and the vertical partition plate 121, the horizontal water spraying connecting pipe 60 is communicated with the main water inlet, the top surface of the horizontal water spraying connecting pipe 60 is a plane, and a plurality of water outlet through holes 61 are formed in the top plate of the horizontal water spraying connecting pipe 60.

[0041] A plurality of cover plates 62 are movably connected to the top surface of the top plate of the horizontal water spraying connecting pipe 60 through hinged shafts, and the cover plates 62 cover the top ends of the corresponding water outlet through holes 61.

[0042] This structure makes the water liquid discharged from the water outlet through holes 61 at the top of the horizontal water spraying connecting pipe 60, which will lift the cover plates 62 upward to achieve discharge, and the combination of the entering gas from the top improves the mixing effect, thereby improving the filtering effect.

[0043] Further, a flow passage 8 is formed between the bottom end of the vertical partition plate 121 and the bottom plate of the upper filtering shell 12, a horizontal fixing plate 63 is arranged below the horizontal water spraying connecting pipe 60, the horizontal fixing plate 63 is fixed on the corresponding inner side walls of the vertical partition plate 121 and the upper filtering shell 12, the horizontal fixing plate 63 separates the upper filtering shell 12 on the left side of the vertical partition plate 121 into an upper cavity, a waterproof stirring motor 13 is fixed in the middle of the bottom surface of the horizontal fixing plate 63, the top end of the output shaft of the stirring motor 13 extends out of the top surface of the horizontal fixing plate 63 and is fixed with a stirring impeller 14, an outer protective sealed shell 64 is fixed in the middle of the bottom surface of the horizontal fixing plate 63, and the stirring motor 13 is in the outer protective sealed shell 64; the outer protective sealed shell 64 can protect the stirring motor 13.

[0044] A plurality of vertical through holes 65 are formed in the horizontal fixing plate 63, a radially extending side edge portion 66 is fixed on the upper outer side wall of the outer protective sealed shell 64, a lifting sleeve body 67 is inserted into the outer protective sealed shell 64, the top surface of the top plate of the lifting sleeve body 67 is pressed against the bottom surface of the horizontal fixing plate 63 and covers all the vertical through holes 65, the outer protective sealed shell 64 is a cylindrical sleeve body, the outer side wall of the side edge portion 66 is close to the lower end inner side wall of the lifting sleeve body 67, vertical guide rods 68 are fixed on the edge bottom surface of the top plate of the lifting sleeve body 67, the vertical guide rods 68 are inserted into sleeve bodies 661 fixed on the top surface of the side edge portion 66, the sleeve bodies 661 and the vertical guide rods 68 are inserted into stainless steel springs 69, and the top end of the stainless steel spring 69 is stressed on the bottom surface of the top plate of the lifting sleeve body 67, and the bottom end is stressed on the top surface of the side edge portion 66.

[0045] This structure can limit the water liquid entering above the horizontal fixed plate 63, prevent it from flowing out immediately, so as to ensure that the entering exhaust gas can be mixed with the water liquid, and when the weight of the mixed water liquid is greater than the elastic support force of the stainless steel spring 69, the stainless steel spring 69 is deformed and compressed, the lifting sleeve body 67 is pressed down, and the mixed water liquid flows out downward.

[0046] The left side plate and the rear side plate of the outer protective sealed shell 64 are both connected with a flow pipe 641, the outer end of the flow pipe 641 is welded and fixed on the inner side wall of the corresponding side plate of the upper transition shell 12 and communicates with the through hole of the side plate, the outer side wall of the upper transition shell 12 at the through hole is fixed with a filter screen plate, the filter screen plate covers the corresponding through hole, one of the inner side walls of the outer protective sealed shell 64 is fixed with a cooling fan 642, the air inlet of the cooling fan 642 covers the through hole of the corresponding side plate of the outer protective sealed shell 64 corresponding to the flow pipe 641.

[0047] One of the flow pipes 641 can realize threading, that is, the electric connection line of the cooling fan 642 and the stirring motor 13 can be pulled out from the flow pipe 641 and electrically connected with the external control host.

[0048] Through the operation of the cooling fan 642, the air flow in the outer protective sealed shell 64 can be realized to cool the stirring motor 13.

[0049] The front wall plate of the upper filter shell 12 at the left upper part of the vertical partition plate 121 is formed with an observation through hole, and a transparent observation window is fixed on the front wall surface of the front wall plate and covers the observation through hole.

[0050] The middle part between the vertical partition plate 121 and the right side plate of the upper filter shell 12 is fixed with a middle horizontal partition plate 16, the side wall of the middle horizontal partition plate 16 is welded and fixed on the right side wall of the vertical partition plate 121 and the corresponding inner side wall of the upper filter shell 12, and the upper filter shell 12 above the middle horizontal partition plate 16 is provided with a circulating fan 9, the bottom end of the circulating fan 9 is fixed on the bottom surface of the top plate of the upper filter shell 12 and covers the air outlet through hole 123; The bottom surface of the middle horizontal partition plate 16 is fixed with a middle vertical plate 161, the front and rear side walls of the middle vertical plate 161 are welded and fixed on the inner side walls of the front and rear wall plates of the upper filter shell 12, the bottom end of the middle vertical plate 161 is welded and fixed on the top surface of the bottom plate of the upper filter shell 12, and the circulating air outlet through hole 162 is formed at the right side of the middle vertical plate 161; The lower part of the intermediate vertical plate 161 is formed with a liquid guide through hole 163, and the bottom left wall of the intermediate vertical plate 161 is movably connected with a bottom blocking plate 164 through a hinge shaft. The bottom blocking plate 164 covers the liquid guide through hole 163, and the middle part of the intermediate vertical plate 161 is formed with a middle through hole.

[0051] The front wall plate of the upper filter shell 12 above the intermediate horizontal partition plate 16 is formed with an inspection through slot, and an inspection plate is fixed to the front wall surface of the front wall plate of the upper filter shell 12 and covers the inspection through slot. The inspection plate can be opened to facilitate inspection.

[0052] All the electrical components of the embodiment are electrically connected with the control host through the electrical connection line, and are controlled to operate through the control host. The control method and structure are both known contents and structures, and will not be described in detail here.

[0053] The purification method of the above-mentioned exhaust gas purification device comprises the following steps: (1) The exhaust gas in the production workshop enters the upper filter shell 12 through the air inlet pipe 1, and at the same time, the water pump 112 in the lower water storage tank 11 operates to introduce water into the upper filter shell 12, which is mixed with the entering exhaust gas; (2) The mixed exhaust gas and water are above the horizontal fixed plate 63, and the stirring motor 13 operates to rotate the stirring impeller 14 to stir the exhaust gas and water above the horizontal fixed plate 63, so as to realize mixing and make the particulate matter in the exhaust gas mixed with the water to be filtered; (3) When the pressure of the exhaust gas and water above the horizontal fixed plate 63 is greater than the elastic force of all the stainless steel springs 69, the lifting sleeve 67 descends, and the mixed water and exhaust gas flow out from the bottom of the vertical through hole 64 into the lower part of the upper filter shell 12. The water and the gas mixed in the water flow into the water inlet groove of the lower water storage tank 11 from the drain pipe 15, and part of the filtered exhaust gas enters the right part of the upper filter shell 12 and is discharged into the wet high-voltage electrostatic precipitator 20 through the operation of the circulating fan 9; (4) The wet high-voltage electrostatic precipitator 20 performs secondary dust removal and filtration on the entering filtered exhaust gas, and the filtered exhaust gas becomes a gas meeting the emission requirements; (5) The gas is discharged from the exhaust pipe 31 by the exhaust fan 30; (6) After the filtered gas-water mixture entering the water inlet groove is mixed again in the water inlet groove, it is ensured that the particles in the gas are all dissolved in the water, and then the gas enters the transition groove; (7) Part of the gas in the water in the transition groove is directly discharged, and the water containing particles is filtered through the filter screen 118 and then enters the water outlet groove; (8) The water in the water outlet groove is further filtered through the filter shell 40 and the filter cotton therein and then enters the water storage tank. (9), the water in the water tank is sucked into the upper filter shell 12 by the water pump 112 for mixing and filtering again.

[0054] Finally, the above embodiments are only used to illustrate the present application, and are not intended to limit the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions belong to the scope of the present application, and the patent protection scope of the present application should be defined by the claims.

Claims

1. An exhaust gas purification device comprising a wet high- voltage electrostatic precipitator (20), characterized by: The left side of the wet high-voltage electrostatic dust collector (20) is provided with a purification main body (10); The purification main body (10) comprises a lower water storage tank body (11), four corners of the top of the lower water storage tank body (11) are fixed with supporting legs, and an upper filter shell (12) is fixed on the top surface of all the supporting legs; The bottom surface of the top plate of the upper filter shell (12) is fixed with a vertical partition plate (121), the front and rear walls of the vertical partition plate (121) are welded and fixed on the inner side walls of the front and rear wall plates of the upper filter shell (12), the top plate of the upper filter shell (12) on the left side of the vertical partition plate (121) is formed with an air inlet through hole (122), the air inlet through hole (122) is connected with an air inlet pipe (1) connected with the top plate of the upper filter shell (12), the top plate of the upper filter shell (12) on the right side of the vertical partition plate (121) is formed with an air outlet through hole (123), and the air outlet through hole (123) is connected with an air outlet pipe (2) connected with the top plate of the upper filter shell (12); The other end of the air outlet pipe (2) is connected with an air inlet on the lower side plate of the wet high-voltage electrostatic dust collector (20), an upper air outlet pipe (21) is connected with an air outlet on the top of the wet high-voltage electrostatic dust collector (20), the air outlet of the upper air outlet pipe (21) is connected with an air inlet of an air extractor (30) fixed on the right side of the wet high-voltage electrostatic dust collector (20), and the air outlet of the air extractor (30) is connected with an exhaust pipe (31); The inside of the lower water storage tank body (11) is fixed with a front and rear extending first partition plate (111) on the left side, the first partition plate (111) and the left side of the lower water storage tank body (11) form a water storage tank, a water pump (112) is fixed at the lower water storage tank body (11) at the water storage tank, the water inlet pipe of the water pump (112) is in the water storage tank, the bottom end of the water inlet pipe is close to the bottom surface of the water storage tank, the water outlet pipe of the water pump (112) is connected with an outwardly extending connecting pipe (113), the top end of the connecting pipe (113) is connected with the inlet of a first valve (3), the outlet of the first valve (3) is connected with an upper connecting pipe, and the top end of the upper connecting pipe is connected with a main water inlet on the upper part of the left side plate of the upper filter shell (12); A stirring motor (13) is installed in the upper filter shell (12) below the air inlet through hole (122), a stirring impeller (14) is fixed on the output shaft of the stirring motor (13), and the stirring impeller (14) stirs and mixes the entering gas and water liquid; Two liquid discharge pipes (15) are connected with the bottom plate of the upper filter shell (12), and the bottom ends of the liquid discharge pipes (15) face the lower water storage tank body (11).

2. The exhaust purification device and purification method thereof according to claim 1, characterized by: The exhaust pipe (31) is a vertically extending pipe body, and the air outlet is at the top end.

3. The exhaust purification device and purification method thereof according to claim 1, characterized by: The right side of the first partition plate (111) of the lower water storage tank body (11) is provided with a second partition plate (114), the right side of the second partition plate (114) is provided with a third horizontal partition plate (115) extending left and right, the bottom surfaces of the first partition plate (111), the second partition plate (113) and the third horizontal partition plate (115) are welded and fixed on the top surface of the bottom plate of the lower water storage tank body (11), the front and rear side walls of the first partition plate (111) and the second partition plate (114) are welded and fixed on the inner side walls of the front and rear inner side walls of the lower water storage tank body (11), and the left and right side walls of the third horizontal partition plate (115) are welded and fixed on the inner side walls of the second partition plate (114) and the right side plate of the lower water storage tank body (11). The first partition plate (111) and the second partition plate (114) form a water inlet groove, and the third horizontal partition plate (115) divides the lower water storage tank body (11) on the right side of the second partition plate (114) into a transition groove at the rear and a water outlet groove at the front.

4. The exhaust purification device and purification method thereof according to claim 3, characterized by: The upper part of the water storage tank and the water inlet groove are covered with an upper cover plate (5), the front and rear parts of the upper cover plate (5) of the water inlet groove are formed with through holes, the bottom end of the liquid discharge pipe (15) passing through the middle part of the bottom plate of the upper filter shell (12) is inserted into the corresponding through hole, the outer side wall of the liquid discharge pipe (15) is tightly attached to the inner side wall of the through hole, and the bottom end of the liquid discharge pipe (15) communicates with the water inlet groove. The water pump (112) is fixed on the upper cover plate (5) above the water storage tank, and the top end of the water outlet pipe of the water pump (112) extends out of the top end of the through hole of the corresponding upper cover plate (5).

5. The exhaust purification device and purification method thereof according to claim 2, characterized by: The lower part of the rear part of the second partition plate (114) is connected with a water passing pipe (6) extending to the right, the water passing pipe (6) extends into the transition groove, the second partition plate (114) at the left side of the water outlet groove is connected with a horizontal water outlet pipe (7) extending to the left, the left end of the horizontal water outlet pipe (7) passes through the water inlet groove and extends out of the left end of the through hole formed in the first partition plate (111) and communicates with the water storage tank, and the outer side wall of the horizontal water outlet pipe (7) is welded and fixed on the inner side wall of the corresponding through hole of the first partition plate (111).

6. The exhaust purification device and purification method thereof according to claim 3, characterized by: The middle part of the third horizontal partition plate (115) is formed with a central flow through hole (116), vertical bent strips (117) are welded and fixed on the left and right sides of the central flow through hole (116) at the rear wall surface of the third horizontal partition plate (115), vertical insertion slots are formed on the opposite wall surfaces of the two vertical bent strips (117), the left and right parts of the filter screen (118) are inserted into the corresponding vertical insertion slots, the filter screen (118) covers the central flow through hole (116), and the top surface of the filter screen (118) is fixed with an upward eye making a vertical rod body.

7. The exhaust gas purification device and purification method thereof according to claim 1, characterized by: The left and right parts of the bottom plate of the upper filter shell (12) are inclined plate parts, the distal ends of the two inclined plate parts are high points, the proximal ends are low points, the bottom plate between the two inclined plate parts is a horizontal plate part, the bottom surfaces of the front and rear parts of the horizontal plate part are welded and fixed with liquid discharge pipes (15), and the top ends of the liquid discharge pipes (15) are aligned with and communicate with the corresponding through holes of the horizontal plate part.

8. The exhaust purification device and purification method thereof according to claim 1, characterized by: The left side plate of the upper filtering shell (12) and the vertical partition plate (121) are provided with a horizontal water spraying connecting pipe (60), the left end and the right end of the horizontal water spraying connecting pipe (60) are welded and fixed on the left side plate and the vertical partition plate (121) of the upper filtering shell (12), the horizontal water spraying connecting pipe (60) is communicated with the main water inlet, the top surface of the horizontal water spraying connecting pipe (60) is a plane, and a plurality of water outlet through holes (61) are formed in the top plate.

9. The exhaust gas purification device and purification method thereof according to claim 8, characterized by: The bottom end of the vertical partition plate (121) and the bottom plate of the upper filtering shell (12) are formed with a flow channel (8), a horizontal fixing plate (63) is arranged below the horizontal water spraying connecting pipe (60), the horizontal fixing plate (63) is fixed on the corresponding inner side walls of the vertical partition plate (121) and the upper filtering shell (12), the horizontal fixing plate (63) separates the upper filtering shell (12) on the left side of the vertical partition plate (121) into an upper cavity, a waterproof stirring motor (13) is fixed in the middle of the bottom surface of the horizontal fixing plate (63), the top end of the output shaft of the stirring motor (13) protrudes out of the top surface of the horizontal fixing plate (63) and is fixed with a stirring impeller (14), an outer protective sealed shell (64) is fixed in the middle of the bottom surface of the horizontal fixing plate (63), and the stirring motor (13) is located in the outer protective sealed shell (64); A plurality of vertical through holes (65) are formed in the horizontal fixing plate (63), a radially extending side edge portion (66) is fixed on the upper outer side wall of the outer protective sealed shell (64), a lifting sleeve body (67) is inserted on the outer protective sealed shell (64), the top surface of the top plate of the lifting sleeve body (67) abuts against the bottom surface of the horizontal fixing plate (63) and covers all the vertical through holes (65), the outer protective sealed shell (64) is a cylindrical sleeve body, the outer side wall of the side edge portion (66) is close to the lower end inner side wall of the lifting sleeve body (67), vertical guide rods (68) are fixed on the edge bottom surface of the top plate of the lifting sleeve body (67) and are inserted in sleeve bodies (661) fixed on the top surface of the side edge portion (66), the sleeve bodies (661) and the vertical guide rods (68) are inserted in stainless steel springs (69), and the top end of the stainless steel spring (69) abuts against the bottom surface of the top plate of the lifting sleeve body (67) and the bottom end abuts against the top surface of the side edge portion (66).

10. A purification method using the exhaust gas purification apparatus according to any one of claims 1 to 8, characterized by: The method comprises the following steps: (1) The waste gas in the production workshop enters the upper filtering shell (12) through the air inlet pipe (1), and at the same time, the water pump (112) in the lower water storage tank (11) operates to introduce water into the upper filtering shell (12), which is mixed with the entering waste gas; (2) The mixed waste gas and water are above the horizontal fixing plate (63), the stirring motor (13) is operated to rotate the stirring impeller (14) to stir the waste gas and water above the horizontal fixing plate (63), so that the particulate matter in the waste gas is mixed with the water to realize filtration. (3) When the pressure of the waste gas and the liquid above the horizontal fixed plate (63) is greater than the elastic force of all the stainless steel springs (69), the lifting sleeve (67) is lowered, and the mixed liquid and waste gas flow out from the bottom of the vertical through hole (64) into the lower part of the upper filter shell (12), the liquid and the gas mixed in the liquid flow from the drain pipe (15) into the water inlet tank of the lower water storage tank body (11), and part of the filtered waste gas enters the right part of the upper filter shell (12) and is discharged into the wet high-voltage electrostatic precipitator (20) through the operation of the circulating fan (9); (4) The wet high-voltage electrostatic precipitator (20) performs secondary dust removal and filtration on the filtered waste gas entering it, and the filtered waste gas becomes a gas that meets the emission requirements; (5) The gas is discharged from the exhaust pipe (31) through the exhaust fan (30); (6) After the filtered gas-water mixture entering the water inlet tank is mixed again in the water inlet tank, it is ensured that the particles in the gas are all dissolved in the liquid, and it enters the transition tank; (7) Part of the gas in the liquid in the transition tank is directly dispersed, and the liquid containing particles is filtered through the filter screen (118) and then enters the water outlet tank; (8) The liquid in the water outlet tank is filtered again through the rectangular shell and the filter cotton inside it and then enters the water storage tank; (9) The liquid in the water storage tank is sucked into the upper filter shell (12) again through the water pump (112).

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