CN111589234A - Waste gas purification environmental protection equipment - Google Patents
Waste gas purification environmental protection equipment Download PDFInfo
- Publication number
- CN111589234A CN111589234A CN202010460226.5A CN202010460226A CN111589234A CN 111589234 A CN111589234 A CN 111589234A CN 202010460226 A CN202010460226 A CN 202010460226A CN 111589234 A CN111589234 A CN 111589234A
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- Prior art keywords
- collecting
- tail gas
- hole
- plate
- environmental protection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
- B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0047—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for discharging the filtered gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
Abstract
The invention discloses an environment-friendly equipment for waste gas purification, which structurally comprises an air inlet, a machine body and an air outlet, wherein the right side of the air inlet is welded with the left side of the machine body, the right side of the machine body is welded with the left side of the air outlet, residual paint spraying solution adsorbed in meshes of a filter screen is blown into a collecting device, the paint spraying solution enters a collecting hole through a collecting plate arranged at the top of a collecting tank, flows downwards along an inclined block in the collecting hole and is adsorbed by sponge, an inner plate is arranged, the rotation angle is fixed through a clamping block, the paint spraying solution is prevented from being spilled out when being cleaned and shaken, the blockage of the filter screen is effectively reduced, the blockage of the filter screen is prevented, tail gas is blown into a tail gas hole for secondary cleaning, then residual paint spraying particles in the tail gas are adsorbed again by an adsorption paperboard, after the adsorption, the adsorption paperboard is driven, further purifying the tail gas of spraying paint, preventing the particles in the tail gas of spraying paint from carrying out secondary pollution on the air.
Description
Technical Field
The invention relates to the field, in particular to waste gas purification environmental protection equipment.
Background
Waste gas purification equipment, mainly refer to the different process technology of application, through retrieving or getting rid of, reduce the harmful component who discharges tail gas, reach the environmental protection, air-purifying's an environmental protection equipment, but when handling the waste gas that sprays paint, because contain tiny thick paint particles in the waste gas that sprays paint, be difficult to dilute, when filtering the waste gas that sprays paint, lead to clarification plant's filter screen mesh to block up easily, lead to the unable normal absorption waste gas that sprays paint of equipment, and when the waste gas that sprays paint that is higher in the face of concentration, need frequently change the filter screen, wash the change to the filter screen.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: this exhaust-gas purification environmental protection equipment, its structure includes air inlet, fuselage, gas outlet, the air inlet right side welds with the fuselage left side mutually, the fuselage right side welds with the gas outlet left side mutually, the right-hand gas outlet that is equipped with of air inlet, the fuselage includes connecting pipe, collection device, filter screen, baffle, hot plate, the connecting pipe left side link up with collection device right side top mutually, the collection device left is equipped with the filter screen, the filter screen bottom welds with the baffle mutually, the air inlet is right-hand to the hot plate is located, the baffle is total two, and fixes along filter screen central symmetry, is the throat form, makes the waste gas that sprays paint after the heating, and the entering filter screen that can be better filters.
As a further improvement of the invention, the collecting device comprises an exhaust passage, a baffle, a collecting net, a collecting tank and a main board, wherein the exhaust passage is arranged on the right of the baffle, the bottom of the baffle is welded with the top of the collecting net, the bottom of the collecting net is welded with the main board, the right of the collecting tank is welded with the bottom of the left of the main board, the exhaust passage is arranged between the main board and the collecting net, and the bottom of the main board is inclined, so that paint spraying particles brought by heated paint spraying waste gas pass through a filter screen and are collected by the main board after being intercepted by the collecting net again, and then flow into the collecting tank through an inclined block at the.
As a further improvement of the invention, the collecting tank comprises a collecting hole, an inner tank, sponge, an anti-sticking block and a collecting plate, wherein the collecting hole is formed above the inner tank, the inner part of the inner tank is abutted against the surface wall of the sponge, the top of the anti-sticking block is welded with the bottom of the inner tank, the collecting hole is formed in the collecting plate, the collecting plate is positioned above the inner tank, the collecting hole is inclined, a paint spraying solution condensed after paint spraying waste gas is heated is prevented from flowing into the collecting tank and overflowing through the collecting hole during cleaning, and the edge of the top of the inner tank is in a shovel mouth shape and is attached to the inner wall of the collecting tank.
As a further improvement of the invention, the collecting hole comprises a hole wall, an inner plate, a rotating shaft, a fixture block and an inclined block, wherein the inner part of the hole wall is hinged with the top of the inner plate, the top of the inner plate is hinged with the axis of the rotating shaft, the fixture block is movably matched with the inner plate, the bottom of the inclined block is adhered with the lower inner wall of the hole wall, six inclined blocks are obliquely fixed along the inner wall of the bottom of the hole wall, so that a paint spraying solution can flow downwards along the bottom of the hole wall, and the inclined blocks are right-angled triangles.
As a further improvement of the invention, the air outlet comprises a fixed plate, four rotating fans and tail gas holes, the rotating fans are arranged in the fixed plate, tail gas holes are formed in the right side of each rotating fan, the fixed plate is arranged on the left side of each tail gas hole, the rotating fans are symmetrically fixed in the fixed plate, the air flow rate is increased through the rotation of the rotating fans, the suction force is increased, and the paint spraying tail gas treatment speed is increased.
As a further improvement of the invention, the tail gas hole comprises a tail gas hole wall, adsorption paper boards and arc springs, wherein the inner wall of the tail gas hole wall is adhered to the top of the adsorption paper boards, the surface wall of each adsorption paper board is adhered to the left side of each arc spring, and the adsorption paper boards are symmetrically fixed on the upper side and the lower side of the inner wall of the tail gas hole wall and are in arc shapes, so that the stress area is increased.
As a further improvement of the invention, the adsorption paperboard comprises a groove, an elastic layer and a board body, wherein the groove is arranged at the left side of the elastic layer, the elastic layer is arranged inside the board body, the surface wall at the left side of the board body is provided with the groove, the elastic layer is arc-shaped, has a uniform angle with the adsorption paperboard and is made of spring steel, and the spring steel has elasticity and resilience.
The invention has the beneficial effects that:
1. with the help of the wind-force of suction machine, will adsorb in the remaining solution of spraying paint in the filter screen mesh blows in collection device, fall into and collect in the net, along collecting the net, the downflow gets into in the collecting vat, make the solution of spraying paint be equipped with the collecting board through the collecting vat top and get into in the collecting hole, the sloping block downflow in the collecting hole, flow into the inner box, adsorbed by the sponge, and be equipped with the inner panel, through fixture block fixed rotation angle, prevent that the solution of spraying paint from spilling when the clearance rocks, the effectual jam that reduces the filter screen, the filter screen jam has been prevented.
2. Rotate the tail gas that sprays paint to exhaust through the rotatory fan that is equipped with in the gas outlet and rotate with higher speed for the air flows, blow in tail gas downthehole clearance once more, then make remaining spraying paint granule in the tail gas adsorb once more by the adsorption paper board, adsorb the back that finishes, drive through arc spring and the elastic plate that is equipped with and adsorb the cardboard and reply the normal position, so that adsorb once more, further purification spraying paint tail gas, the granule in the tail gas of spraying paint has been prevented from carrying out secondary pollution to the air.
Drawings
FIG. 1 is a schematic structural diagram of an environmental protection apparatus for purifying waste gas according to the present invention.
Fig. 2 is a schematic structural diagram of the interior of a fuselage according to the present invention.
Fig. 3 is a schematic structural diagram of a collecting device according to the present invention.
FIG. 4 is a schematic view of a collecting tank according to the present invention.
FIG. 5 is a schematic view of a collection well according to the present invention.
FIG. 6 is a schematic view of an air outlet structure according to the present invention.
Fig. 7 is a schematic structural diagram of an exhaust gas hole according to the present invention.
Fig. 8 is a schematic structural diagram of an absorbent paperboard of the present invention.
In the figure: air inlet-1, fuselage-2, air outlet-3, connecting pipe-21, collecting device-22, filter screen-23, baffle-24, heating plate-25, exhaust channel-221, baffle-222, collecting net-223, collecting tank-224, main board-225, collecting hole-a 1, inner box-a 2, sponge-a 3, anti-sticking block-a 4, collecting plate-a 5, hole wall-a 11, inner plate-a 12, rotating shaft-13, clamping block-a 14, oblique block-a 15, fixing plate-31, rotating fan-32, tail gas hole-33, tail gas hole wall-331, adsorption-332, arc spring-333, groove-b 1, elastic plate-b 2 and plate body-b 3.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 5:
the invention relates to an environment-friendly waste gas purifying device which structurally comprises a gas inlet 1, a machine body 2 and a gas outlet 3, wherein the right side of the gas inlet 1 is welded with the left side of the machine body 2, the right side of the machine body 2 is welded with the left side of the gas outlet 3, the gas outlet 3 is arranged on the right side of the gas inlet 1, the machine body 2 comprises a connecting pipe 21, a collecting device 22, a filter screen 23, a baffle plate 24 and heating plates 25, the left side of the connecting pipe 21 is communicated with the top of the right side of the collecting device 22, the filter screen 23 is arranged on the left side of the collecting device 22, the bottom of the filter screen 23 is welded with the baffle plate 24, the heating plates 25 are arranged on the right side of the gas inlet 1, the two baffle plates 24 are symmetrically fixed along the center of the filter screen 23 and are in a necking shape, heated paint spraying waste gas, and the paint spraying waste gas is prevented from diffusing in the machine body, so that paint spraying particles are attached to the inner wall of the machine body and are difficult to clean.
Wherein the collecting device 22 comprises an exhaust passage 221, a baffle 222, a collecting net 223, a collecting tank 224 and a main board 225, the exhaust channel 221 is arranged at the right side of the baffle 222, the bottom of the baffle 222 is welded with the top of the collecting net 223, the bottom of the collecting net 223 is welded with the main plate 225, the right side of the collecting groove 224 is welded with the bottom of the left side of the main plate 225, the exhaust passage 221 is arranged between the main board 225 and the collecting net 223, the bottom of the main board 225 is inclined, so that paint particles brought by heated paint exhaust gas pass through the filter screen 23 and are intercepted by the collecting net 223 again, collected by the main plate 225, flows into the collection tank 224 through the inclined block at the bottom of the main plate 225, prevent to produce between mainboard 225 and the collection net 223 and pile up, cause the jam, make collect and fill up by accumulational spraying paint between net 223 and the mainboard 225, avoid the unable condition of circulating of air to appear.
The collecting tank 224 comprises a collecting hole a1, an inner tank a2, a sponge a3, an anti-sticking block a4 and a collecting plate a5, wherein the collecting hole a1 is arranged above the inner tank a2, the inner tank a2 is internally abutted against the surface wall of the sponge a3, the top of the anti-sticking block a4 is welded with the bottom of the inner tank a2, a collecting hole a1 is arranged in the collecting plate a5, the collecting plate a5 is arranged above the inner tank a2, the collecting hole a1 is inclined, the paint spraying solution condensed after the paint spraying waste gas is heated is prevented from flowing into the collecting tank 224 and overflowing through the collecting hole a1 during cleaning, and the edge of the top of the inner tank a2 is in a notch shape and is attached to the inner wall of the inner tank 224, so that the generated paint spraying solution can flow into the inner tank a2 along the notch, and the paint solution is prevented from being adhered between the surface wall of the collecting tank 224 and the inner tank a2, and the inner tank a2 8, and the inner.
The collecting hole a1 comprises a hole wall a11, an inner plate a12, a rotating shaft 13, a fixture block a14 and an inclined block a15, the inside of the hole wall a11 is hinged to the top of the inner plate a12, the top of the inner plate a12 is hinged to the axis of the rotating shaft 13, the fixture block a14 is movably matched with the inner plate a12, the bottom of the inclined block a15 is bonded with the lower inner wall of the hole wall a11, the inclined block a15 is totally six blocks and is fixed along the inner wall of the bottom of the hole wall a11 in an inclined mode, so that paint spraying solution can flow downwards along the bottom of the hole wall a11, the inclined block a15 is a right triangle, right-angle sides face downwards, and a baffle plates are formed by the right.
The specific use mode and function of the embodiment are as follows:
in the invention, a user connects an air inlet 1 with a suction machine to absorb paint spraying tail gas, so that the paint spraying tail gas enters a machine body from the air inlet 1, then the paint spraying tail gas is heated and purified through a heating plate 25, paint spraying particles in the paint spraying tail gas are dissolved at high temperature, then the paint spraying tail gas is filtered through a filter screen 23, residual paint spraying solution absorbed in meshes of the filter screen 23 is blown into a collecting device 22 by wind power of the suction machine, falls into a collecting net 223, flows downwards along the collecting net 223 and enters a collecting groove 224, so that the paint spraying solution enters a collecting hole a1 through a collecting plate a5 arranged at the top of the collecting groove 224, flows downwards along an inclined block a15 in a collecting hole a1, flows into an inner box a2, is absorbed by sponge a3 and is provided with an inner plate a12, the paint spraying solution is prevented from being spilled during cleaning and shaking by fixing the rotation angle of the block a14, and then the filtered paint spraying tail gas is discharged into an air outlet 3, the effectual jam that reduces filter screen 23 has prevented that filter screen 23 from blockking up, leads to the unable condition of carrying out normal filtration to appear, also effectually prevents the residual paint spraying solution who produces of tail gas of spraying paint after the high temperature clearance contaminated air of discharging once more.
Example 2:
as shown in fig. 6 to 8:
wherein, gas outlet 3 includes fixed plate 31, rotation fan 32, tail gas pocket 33, fixed plate 31 is inside to be equipped with rotation fan 32, the right-hand tail gas pocket 33 that is equipped with of rotation fan 32, tail gas pocket 33 left is equipped with fixed plate 31, rotation fan 32 is total four, and the symmetry is fixed in inside fixed plate 31, accelerates air flow rate through rotation fan 32 rotation, increases suction, makes the tail gas processing speed that sprays paint accelerate, discharges to tail gas pocket 33, then carries out the quick discharge of processing of tail gas pocket 33, has further cleaned the tail gas that sprays paint, has reduced air pollution.
Wherein, tail gas pocket 33 includes tail gas pore wall 331, adsorbs cardboard 332, arc spring 333, tail gas pore wall 331 inner wall bonds with adsorbing cardboard 332 top mutually, adsorb cardboard 332 table wall and arc spring 333 left side and bond mutually, adsorb the total two sets of fourteen of cardboard 332, the symmetry is fixed in both sides about tail gas pore wall 331 inner wall, is circular-arcly, has increased lifting surface, makes the exhaust tail gas of spraying paint purify through fourteen absorption of adsorbing cardboard 332 again, prevents that remaining granule of spraying paint from discharging once more.
Wherein, adsorb cardboard 332 includes recess b1, elastic layer b2, board body b3, elastic layer b2 left is located to recess b1, inside elastic layer b2 located board body b3, board body b3 left side table wall is equipped with recess b1, elastic layer b2 is the arc, with the unified angle of adsorption cardboard 332, and be the spring steel material, because the spring steel has elasticity and resilience, after adsorbing cardboard 332 is crooked, the elasticity through elastic layer b2 resets to the normal position, carries out next absorption, prevents that adsorption cardboard 332 from being blown to bend, leads to can not reply and carry out normal absorption.
The specific use mode and function of the embodiment are as follows:
according to the invention, the treated paint spraying tail gas enters the air outlet 3 through the exhaust passage 221, then the discharged paint spraying tail gas is accelerated in rotation through the rotating fan 32 arranged in the air outlet 3, the air flow is accelerated, the tail gas is blown into the tail gas hole 33 for cleaning again, then the residual paint spraying particles in the tail gas are adsorbed again by the adsorption paperboard 332, meanwhile, the adsorption area is increased by the groove b1 in the adsorption paperboard 332, more paint spraying particles can be adsorbed, after the adsorption is finished, the adsorption paperboard 332 is driven to return to the original position through the arc-shaped spring 333 and the elastic plate b2, so that the re-adsorption is carried out, the paint spraying tail gas is further purified, and the secondary pollution of the particles in the paint spraying tail gas to the air is prevented.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (7)
1. The utility model provides an exhaust-gas purification environmental protection equipment, its structure includes air inlet (1), fuselage (2), gas outlet (3), air inlet (1) right side welds mutually with fuselage (2) left side, fuselage (2) right side welds mutually with gas outlet (3) left side, air inlet (1) right-hand gas outlet (3) that are equipped with, its characterized in that:
fuselage (2) include connecting pipe (21), collection device (22), filter screen (23), baffle (24), hot plate (25), connecting pipe (21) left side link up with collection device (22) right side top mutually, collection device (22) left is equipped with filter screen (23), filter screen (23) bottom welds with baffle (24) mutually, air inlet (1) right-hand is located in hot plate (25).
2. The exhaust gas purifying environmental protection apparatus according to claim 1, characterized in that: collection device (22) include exhaust passage (221), baffle (222), collect net (223), collecting vat (224), mainboard (225), baffle (222) right-hand is located in exhaust passage (221), baffle (222) bottom welds with collection net (223) top mutually, collect net (223) bottom and mainboard (225) and weld mutually, collecting vat (224) right side welds with mainboard (225) left side bottom mutually, exhaust passage (221) are located mainboard (225) and are collected between the net (223).
3. An exhaust gas purifying environmental protection apparatus according to claim 2, characterized in that: the collecting groove (224) comprises a collecting hole (a1), an inner box (a2), sponge (a3), an anti-sticking block (a4) and a collecting plate (a5), wherein the collecting hole (a1) is formed above the inner box (a2), the inner part of the inner box (a2) is inconsistent with the surface wall of the sponge (a3), the top of the anti-sticking block (a4) is welded with the bottom of the inner box (a2), the collecting hole (a1) is formed in the collecting plate (a5), and the collecting plate (a5) is located above the inner box (a 2).
4. An exhaust gas purifying environmental protection apparatus according to claim 3, characterized in that: the collecting hole (a1) comprises a hole wall (a11), an inner plate (a12), a rotating shaft (13), a clamping block (a14) and an inclined block (a15), wherein the inside of the hole wall (a11) is hinged to the top of the inner plate (a12), the top of the inner plate (a12) is hinged to the axis of the rotating shaft (13), the clamping block (a14) is movably matched with the inner plate (a12), and the bottom of the inclined block (a15) is bonded with the lower inner wall of the hole wall (a 11).
5. The exhaust gas purifying environmental protection apparatus according to claim 1, characterized in that: gas outlet (3) are including fixed plate (31), rotatory fan (32), tail gas hole (33), fixed plate (31) inside is equipped with rotatory fan (32), rotatory fan (32) the right-hand tail gas hole (33) that is equipped with, tail gas hole (33) left is equipped with fixed plate (31).
6. An exhaust gas purifying environmental protection apparatus according to claim 5, characterized in that: the tail gas hole (33) comprises a tail gas hole wall (331), an adsorption paperboard (332) and an arc-shaped spring (333), wherein the inner wall of the tail gas hole wall (331) is bonded with the top of the adsorption paperboard (332), and the surface wall of the adsorption paperboard (332) is bonded with the left side of the arc-shaped spring (333).
7. The exhaust gas purifying environmental protection apparatus according to claim 6, characterized in that: the adsorption paperboard (332) comprises a groove (b1), an elastic layer (b2) and a plate body (b3), wherein the groove (b1) is formed in the left side of the elastic layer (b2), the elastic layer (b2) is arranged inside the plate body (b3), and the left side surface wall of the plate body (b3) is provided with the groove (b 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460226.5A CN111589234A (en) | 2020-05-27 | 2020-05-27 | Waste gas purification environmental protection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460226.5A CN111589234A (en) | 2020-05-27 | 2020-05-27 | Waste gas purification environmental protection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111589234A true CN111589234A (en) | 2020-08-28 |
Family
ID=72181209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010460226.5A Pending CN111589234A (en) | 2020-05-27 | 2020-05-27 | Waste gas purification environmental protection equipment |
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| CN (1) | CN111589234A (en) |
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| WO2017090884A1 (en) * | 2015-11-24 | 2017-06-01 | 한대곤 | Air cleaning device |
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| CN109289371A (en) * | 2018-11-22 | 2019-02-01 | 长沙汇聚环境技术有限公司 | A kind of airborne contaminant administering method and device containing sticky paint grain |
| CN209679726U (en) * | 2018-12-20 | 2019-11-26 | 江苏中信浩博环保科技有限公司 | A kind of furniture lacquer spraying waste gas collection device |
| CN209696515U (en) * | 2018-11-09 | 2019-11-29 | 苏州互尔达自动化科技有限公司 | A kind of emission-control equipment for paint spray booth |
| CN209900903U (en) * | 2019-01-11 | 2020-01-07 | 厦门绿祥环保工程有限公司 | Volatile organic compounds waste gas collection device |
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2020
- 2020-05-27 CN CN202010460226.5A patent/CN111589234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013104102A1 (en) * | 2012-04-24 | 2013-10-24 | Ift Gmbh | Filter unit for separating liquid present in form of droplets from gaseous mass flow, has heating device provided with heating element, which surrounds filtering medium comprising fiber knitted fabric made of fiber |
| WO2017090884A1 (en) * | 2015-11-24 | 2017-06-01 | 한대곤 | Air cleaning device |
| CN108671656A (en) * | 2018-07-30 | 2018-10-19 | 庄粉香 | A kind of environment-friendly type industrial waste-gas purifier |
| CN209696515U (en) * | 2018-11-09 | 2019-11-29 | 苏州互尔达自动化科技有限公司 | A kind of emission-control equipment for paint spray booth |
| CN109289371A (en) * | 2018-11-22 | 2019-02-01 | 长沙汇聚环境技术有限公司 | A kind of airborne contaminant administering method and device containing sticky paint grain |
| CN209679726U (en) * | 2018-12-20 | 2019-11-26 | 江苏中信浩博环保科技有限公司 | A kind of furniture lacquer spraying waste gas collection device |
| CN209900903U (en) * | 2019-01-11 | 2020-01-07 | 厦门绿祥环保工程有限公司 | Volatile organic compounds waste gas collection device |
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