CN106237787A - A kind of leather spraying dust arrester - Google Patents
A kind of leather spraying dust arrester Download PDFInfo
- Publication number
- CN106237787A CN106237787A CN201610723941.7A CN201610723941A CN106237787A CN 106237787 A CN106237787 A CN 106237787A CN 201610723941 A CN201610723941 A CN 201610723941A CN 106237787 A CN106237787 A CN 106237787A
- Authority
- CN
- China
- Prior art keywords
- cleaning case
- dust cleaning
- dust
- screen pack
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/14—Auxiliary devices for leather-working machines, e.g. grinding devices for blading cylinders or dust-removal devices combined with the working machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention discloses a kind of leather spraying dust arrester, relate to leather processing technique field.This leather spraying dust arrester, including base, the top of described base is from left to right sequentially installed with spraying box and dust cleaning case, the side of described base is provided with controller, the inside of described spraying box is connected with gripper shoe and glove web plate from top to bottom in turn, the top of described gripper shoe is from left to right sequentially installed with cushion block and blower fan, and the top of described cushion block is provided with high-pressure pump, and the input of described high-pressure pump is communicated with conveying pipeline.This leather spraying dust arrester, first screen pack, electro-adsorption plate and the use of the second screen pack, the iron core being provided with in electro-adsorption plate and coil, device is allowed to have possessed the effect of dedusting, the waste gas that device produces can be carried out dust removal process, ensure that dust can be removed thoroughly, it is to avoid the dust pollution air contained in waste gas.
Description
Technical field
The present invention relates to leather processing technique field, be specially a kind of leather spraying dust arrester.
Background technology
Leather is the most perishable animal skins of degeneration obtained by physics, the chemical processes such as depilation and tanning, leather
Being made up of at three dimensions close weave natural protein fibre, there is a kind of special grain layer on its surface, has nature
Graining and gloss, comfortable feel.
In the spray process of leather, the gas in flush coater needs by blower fan, gas to be extracted out, but in extraction
In waste gas, containing substantial amounts of spray paint atomization dust and toxic and harmful, and traditional flush coater does not possess the function of dedusting,
Therefore, after waste gas is discharged in air again, meeting contaminated air, affect the use of people.
Summary of the invention
(1) solve the technical problem that
For the deficiencies in the prior art, the invention provides a kind of leather spraying dust arrester, solve leather spraying equipment not
Can the problem of dedusting.
(2) technical scheme
For realizing object above, the present invention is achieved by the following technical programs: a kind of leather spraying dust arrester, the end of including
Seat, the top of described base is from left to right sequentially installed with spraying box and dust cleaning case, and the side of described base is provided with controller,
The inside of described spraying box is connected with gripper shoe and glove web plate from top to bottom in turn, and the top of described gripper shoe from left to right depends on
Secondary cushion block and the blower fan of being provided with, the top of described cushion block is provided with high-pressure pump, and the input of described high-pressure pump is communicated with conveying pipeline,
And conveying pipeline runs through spraying box away from one end of high-pressure pump and extends to outside it, described high pressure delivery side of pump is communicated with feeding
Pipe, and feed pipe runs through gripper shoe away from one end of high-pressure pump and connects with the high-pressure nozzle being arranged on bottom gripper shoe, described
The bottom of blower fan is communicated with blast pipe, and the bottom of blast pipe is run through gripper shoe and extends to below, the side of described blower fan
It is communicated with ajutage, and ajutage sequentially passes through spraying box and dust cleaning case away from one end of blower fan and extends in dust cleaning case
Portion, the inwall side of described dust cleaning case is fixedly connected with cleaner unit, the top of described cleaner unit with extend within dust cleaning case
One end connection of ajutage, the bottom of described cleaner unit is communicated with discharge pipe, and the inwall top of described dust cleaning case sets uses filter,
And the top of filter connects with the top of dust cleaning case, bottom the inwall of described base, from left to right it is sequentially installed with water pump and water
Pond, the top in described pond connects has water purifier, the top of described water purifier to be connected by outlet pipe with the bottom of dust cleaning case, and
Outlet pipe is provided with the first electromagnetic valve, the input of described water pump and the side in pond by pipeline communication, described water pump defeated
Go out end and be communicated with water-supply-pipe, and water-supply-pipe sequentially passes through base and dust cleaning case and extends to the inside of dust cleaning case, described water-supply-pipe
Upper and be positioned at the inside of base and be provided with the second electromagnetic valve, the inside of described cleaner unit is connected with the first drainage screen from top to bottom in turn
Plate, electro-adsorption plate and the second screen pack, the inside of described filter is connected with the first activated carbon adsorption layer from top to bottom in turn
With the second activated carbon adsorption layer, described controller is electric with high-pressure pump, blower fan, water pump, the first electromagnetic valve and the second electromagnetic valve respectively
Property connect.
Preferably, the surface of described electro-adsorption plate is provided with Air Filter, and the inside of described electro-adsorption plate is fixedly connected with iron core,
And around being provided with coil on iron core, described coil is electrically connected with controller.
Preferably, the aperture density of described first screen pack is less than the aperture density of the second screen pack, and first
Screen pack, electro-adsorption plate and the second screen pack are equally distributed on the inside of cleaner unit.
Preferably, the inside of described water purifier is sequentially provided with spongy layer, filtering meshes and the suction of the 3rd activated carbon from top to bottom
Attached layer, and spongy layer, filtering meshes and the 3rd activated carbon adsorption layer be equally spaced.
(3) beneficial effect
The invention provides a kind of leather spraying dust arrester.Possess following beneficial effect:
(1), this leather sprays dust arrester, by the first screen pack, electro-adsorption plate and the use of the second screen pack, electricity suction
The iron core being provided with in attached plate and coil, allow device possess the effect of dedusting, can carry out the waste gas that device produces at dedusting
Reason, it is ensured that dust can be removed thoroughly, it is to avoid the dust pollution air contained in waste gas.
(2), this leather spraying dust arrester, by the use of filter, can be to the poisonous and harmful gas contained in waste gas
Body carries out adsorption treatment, it is ensured that the toxic and harmful in waste gas can be removed thoroughly, it is to avoid waste gas is discharged into air
In will not contaminated air, protect environment, by the use of water purifier, water can be carried out purified treatment, water can be circulated
Use, save the utilization of water resource, facilitate the use of people.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the internal structure schematic diagram of cleaner unit of the present invention；
Fig. 3 is the internal structure schematic diagram of filter of the present invention；
Fig. 4 is the internal structure schematic diagram of electro-adsorption plate of the present invention；
Fig. 5 is the internal structure schematic diagram of water purifier of the present invention.
In figure, 1 base, 2 spraying boxes, 3 dust cleaning cases, 4 controllers, 5 gripper shoes, 6 glove web plates, 7 cushion blocks, 8 blower fans, 9 height
Press pump, 10 conveying pipelines, 11 feed pipes, 12 high-pressure nozzles, 13 blast pipes, 14 ajutages, 15 cleaner units, 16 discharge pipes, 17 filtrations
Device, 18 water pumps, 19 ponds, 20 water purifiers, 201 spongy layers, 202 filtering meshes, 203 the 3rd activated carbon adsorption layers, 21 outlet pipes,
22 first electromagnetic valves, 23 water-supply-pipes, 24 second electromagnetic valves, 25 first screen packs, 26 electro-adsorption plates, 27 second screen packs,
28 first activated carbon adsorption layers, 29 second activated carbon adsorption layers, 30 Air Filters, 31 iron cores, 32 coils.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides a kind of leather spraying dust arrester, as Figure 1-3, including base 1, the top of base 1
Portion is from left to right sequentially installed with spraying box 2 and dust cleaning case 3, and the side of base 1 is provided with controller 4, the inside of spraying box 2 from
Top to bottm being connected with gripper shoe 5 and glove web plate 6 in turn, glove web plate 6 can be placed directly in leather above, and object placement net
Plate 6 is set to network structure, it is possible to allow coating drip, thus does not interferes with the coating quality of leather, and the top of gripper shoe 5 is from a left side
Be sequentially installed with cushion block 7 and blower fan 8 to the right side, the top of cushion block 7 is provided with high-pressure pump 9, and high-pressure pump 9 can pressurize, help
In the spraying of leather, the input of high-pressure pump 9 is communicated with conveying pipeline 10, and conveying pipeline 10 runs through spray away from one end of high-pressure pump 9
Being coated with case 2 and extend to outside it, the outfan of high-pressure pump 9 is communicated with feed pipe 11, and feed pipe 11 is away from one end of high-pressure pump 9
Running through gripper shoe 5 and connect with the high-pressure nozzle 12 being arranged on bottom gripper shoe 5, the bottom of blower fan 8 is communicated with blast pipe 13, and
The bottom of blast pipe 13 is run through gripper shoe 5 and extends to below, and the side of blower fan 8 is communicated with ajutage 14, and ajutage 14
One end away from blower fan 8 sequentially passes through spraying box 2 and dust cleaning case 3 and extends to the inside of dust cleaning case 3, the inwall one of dust cleaning case 3
Side is fixedly connected with cleaner unit 15, and it is clean that cleaner unit 15 can allow the dust contained in waste gas remove, it is ensured that will not contaminated air
Environment, the top of cleaner unit 15 connects with the one end of the ajutage 13 extended within dust cleaning case 3, the bottom connection of cleaner unit 15
Having discharge pipe 16, the inwall top of dust cleaning case 3 sets uses filter 17, and filter 17 can be to the poisonous and harmful gas produced in waste gas
Body carries out adsorption removal, it is to avoid contaminated air environment, and the top of filter 17 connects with the top of dust cleaning case 3, base 1
From left to right being sequentially installed with water pump 18 and pond 19 bottom inwall, water pump 18 can be directly water suction dedusting from pond 19
In case 3, and flooding discharge pipe 16, water can dissolve the poisonous and harmful gas contained in a part of waste gas in certain degree
Body, the top in pond 19 connects water purifier 20, and water purifier 20 can carry out purified treatment to water, it is ensured that recycling of water,
Saving water resource, the top of water purifier 20 is connected by outlet pipe 21 with the bottom of dust cleaning case 3, and outlet pipe 21 is provided with the
One electromagnetic valve 22, the first electromagnetic valve 22 can stop water to flow directly into from dust cleaning case 3 in pond 19, the input of water pump 18 with
Pipeline communication is passed through in the side in pond 19, and the outfan of water pump 18 is communicated with water-supply-pipe 23, and water-supply-pipe 23 sequentially passes through base 1
With dust cleaning case 3 inside that extends to dust cleaning case 3, on water-supply-pipe 23 and be positioned at the inside of base 1 and be provided with the second electromagnetic valve 24,
Two electromagnetic valves 24 can avoid water to flow out from water-supply-pipe 23, and the inside of cleaner unit 15 is connected with the first filtration from top to bottom in turn
Web plate 25, electro-adsorption plate 26 and the second screen pack 27, the first screen pack 25, electro-adsorption plate 26 and the second screen pack 27 are all
Can adsorb dust, it is ensured that dust can be removed totally, the aperture density of the first screen pack 25 is less than the second filtration
The aperture density of web plate 27, and the first screen pack 25, electro-adsorption plate 26 and the second screen pack 27 be equally distributed on dedusting
The inside of device 15, the inside of filter 17 is connected with the first activated carbon adsorption layer 28 and the second activated carbon adsorption from top to bottom in turn
Layer 29, toxic and harmful can be adsorbed by the first activated carbon adsorption layer 28 and the second activated carbon adsorption layer 29, it is ensured that
Toxic and harmful is removed clean, controller 4 respectively with high-pressure pump 9, blower fan 8, water pump the 18, first electromagnetic valve 22 and the second electromagnetism
Valve 24 is electrically connected with.
As shown in Figure 4, the surface of electro-adsorption plate 26 is provided with Air Filter 30, and the inside of electro-adsorption plate 26 is fixedly connected with iron core
Around being provided with coil 32 on 31, and iron core 31, coil 32 is electrically connected with controller 4.
As it is shown in figure 5, the inside of water purifier 20 is sequentially provided with spongy layer 201 from top to bottom, filtering meshes 202 and the 3rd is lived
Property charcoal adsorption layer 203, and spongy layer 201, filtering meshes 202 and the 3rd activated carbon adsorption layer 203 be equally spaced, spongy layer 201,
Impurity in water can be removed by filtering meshes 202, and the 3rd activated carbon adsorption layer 203 can be to the poisonous and harmful gas in water
Body adsorbs.
During use, leather is placed on glove web plate 6, then controls high-pressure pump 9 with controller 4 and run, start leather
Spray, after having sprayed, close high-pressure pump 9, control water pump 18 and run, and close the first electromagnetic valve 22 and open second
Electromagnetic valve 24, allows water be transported in dust cleaning case 3, allows water can flood the bottom of discharge pipe 16, switches off the pump 18 and second electromagnetism
Valve 24, then control blower fan 8 and coil 32 runs, coil 32 runs and produces electrostatic, and the waste gas suction in 8 spraying boxes 2 of blower fan removes
In dirt case 3, through cleaner unit 15, by the first screen pack 25, electro-adsorption plate 26 and the absorption of the second screen pack 27, useless
Dust in gas is removed, and waste gas is process from water, the toxic and harmful in waste gas can be removed a part, then through filtering
Toxic and harmful in 17 waste gas of device is thoroughly removed, and is then discharged in air, after having used, closes blower fan 8 and line
Circle 32, then open the first electromagnetic valve 22, allow waste water flow into pond 19 after water purifier 20 purifies, give over to use next time.
In sum, this leather spraying dust arrester, by the first screen pack 25, electro-adsorption plate 26 and the second drainage screen
The use of plate 27, the iron core 31 being provided with in electro-adsorption plate 26 and coil 32, allow device possess the effect of dedusting, can be to device
The waste gas produced carries out dust removal process, it is ensured that dust can remove thoroughly, it is to avoid the dust pollution contained in waste gas is empty
Gas.
Meanwhile, by the use of filter 17, the toxic and harmful contained can be carried out adsorption treatment in waste gas, protect
Demonstrate,proved the toxic and harmful in waste gas can to remove thoroughly, it is to avoid waste gas be discharged in air will not contaminated air, protect
Protect environment, by the use of water purifier 20, water can have been carried out purified treatment, water can be recycled, save water money
The utilization in source, facilitates the use of people.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. a leather spraying dust arrester, including base (1), it is characterised in that: the top of described base (1) from left to right depends on
Secondary being provided with spraying box (2) and dust cleaning case (3), the side of described base (1) is provided with controller (4), described spraying box (2)
Inside is connected with gripper shoe (5) and glove web plate (6) from top to bottom in turn, and the top of described gripper shoe (5) is the most successively
Being provided with cushion block (7) and blower fan (8), the top of described cushion block (7) is provided with high-pressure pump (9), the input of described high-pressure pump (9)
It is communicated with conveying pipeline (10), and conveying pipeline (10) runs through spraying box (2) away from one end of high-pressure pump (9) and extends to outside it,
The outfan of described high-pressure pump (9) is communicated with feed pipe (11), and feed pipe (11) runs through support away from one end of high-pressure pump (9)
Plate (5) also connects with the high-pressure nozzle (12) being arranged on gripper shoe (5) bottom, and the bottom of described blower fan (8) is communicated with blast pipe
(13), and the bottom of blast pipe (13) is run through gripper shoe (5) and extends to below, and the side of described blower fan (8) is communicated with to be sent
Airduct (14), and ajutage (14) sequentially passes through spraying box (2) and dust cleaning case (3) away from one end of blower fan (8) and extends to remove
The inside of dirt case (3), the inwall side of described dust cleaning case (3) is fixedly connected with cleaner unit (15), the top of described cleaner unit (15)
The one end of the ajutage (13) that portion is internal with extending to dust cleaning case (3) connects, and the bottom of described cleaner unit (15) is communicated with air-out
Pipe (16), the inwall top of described dust cleaning case (3) sets with filter (17), and the top of filter (17) and dust cleaning case (3)
Top connects, and is from left to right sequentially installed with water pump (18) and pond (19), described pond bottom the inwall of described base (1)
(19) top connects water purifier (20), and outlet pipe is passed through in the bottom of the top of described water purifier (20) and dust cleaning case (3)
(21) connection, and outlet pipe (21) is provided with the first electromagnetic valve (22), the input of described water pump (18) and the one of pond (19)
Pipeline communication is passed through in side, and the outfan of described water pump (18) is communicated with water-supply-pipe (23), and water-supply-pipe (23) sequentially passes through base
(1) and dust cleaning case (3) extend to the inside of dust cleaning case (3), described water-supply-pipe (23) is upper and is positioned at the inside of base (1) and is provided with
Second electromagnetic valve (24), the inside of described cleaner unit (15) is connected with the first screen pack (25), electro-adsorption from top to bottom in turn
Plate (26) and the second screen pack (27), the inside of described filter (17) is connected with the first activated carbon adsorption from top to bottom in turn
Layer (28) and the second activated carbon adsorption layer (29), described controller (4) respectively with high-pressure pump (9), blower fan (8), water pump (18), the
One electromagnetic valve (22) and the second electromagnetic valve (24) are electrically connected with.
A kind of leather spraying dust arrester the most according to claim 1, it is characterised in that: the table of described electro-adsorption plate (26)
Face is provided with Air Filter (30), and the inside of described electro-adsorption plate (26) is fixedly connected with iron core (31), and iron core (31) is upper around setting
Coil (32), described coil (32) is had to be electrically connected with controller (4).
A kind of leather spraying dust arrester the most according to claim 1, it is characterised in that: described first screen pack (25)
Aperture density less than the aperture density of the second screen pack (27), and the first screen pack (25), electro-adsorption plate (26) and
Second screen pack (27) is equally distributed on the inside of cleaner unit (15).
A kind of leather spraying dust arrester the most according to claim 1, it is characterised in that: the inside of described water purifier (20)
It is sequentially provided with spongy layer (201), filtering meshes (202) and the 3rd activated carbon adsorption layer (203), and spongy layer from top to bottom
(201), filtering meshes (202) and the 3rd activated carbon adsorption layer (203) are equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610723941.7A CN106237787B (en) | 2016-08-26 | 2016-08-26 | A kind of leather spraying dust-extraction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610723941.7A CN106237787B (en) | 2016-08-26 | 2016-08-26 | A kind of leather spraying dust-extraction unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106237787A true CN106237787A (en) | 2016-12-21 |
| CN106237787B CN106237787B (en) | 2018-10-12 |
Family
ID=57596142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610723941.7A Expired - Fee Related CN106237787B (en) | 2016-08-26 | 2016-08-26 | A kind of leather spraying dust-extraction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106237787B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107583395A (en) * | 2017-10-23 | 2018-01-16 | 南京溧水丽华弹簧厂 | One kind is used for spring production dust arrester |
| CN109939829A (en) * | 2019-03-23 | 2019-06-28 | 扬州市海纳源科技服务有限责任公司 | A kind of coating equipment dust treatment and purification equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755485Y (en) * | 2004-07-08 | 2006-02-01 | 聂奇 | Air purifier |
| CN204043077U (en) * | 2014-08-29 | 2014-12-24 | 连阿芬 | A kind of air purifier |
| CN204411987U (en) * | 2014-12-18 | 2015-06-24 | 蚌埠星源环保科技有限公司 | A kind of environment-friendly type cyclone dust collectors |
| CN206008372U (en) * | 2016-08-26 | 2017-03-15 | 无锡市新达轻工机械有限公司 | A kind of leather sprays dust arrester |
-
2016
- 2016-08-26 CN CN201610723941.7A patent/CN106237787B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755485Y (en) * | 2004-07-08 | 2006-02-01 | 聂奇 | Air purifier |
| CN204043077U (en) * | 2014-08-29 | 2014-12-24 | 连阿芬 | A kind of air purifier |
| CN204411987U (en) * | 2014-12-18 | 2015-06-24 | 蚌埠星源环保科技有限公司 | A kind of environment-friendly type cyclone dust collectors |
| CN206008372U (en) * | 2016-08-26 | 2017-03-15 | 无锡市新达轻工机械有限公司 | A kind of leather sprays dust arrester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107583395A (en) * | 2017-10-23 | 2018-01-16 | 南京溧水丽华弹簧厂 | One kind is used for spring production dust arrester |
| CN109939829A (en) * | 2019-03-23 | 2019-06-28 | 扬州市海纳源科技服务有限责任公司 | A kind of coating equipment dust treatment and purification equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106237787B (en) | 2018-10-12 |
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