CN208865327U - A kind of single machine pulse belt deduster - Google Patents
A kind of single machine pulse belt deduster Download PDFInfo
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- CN208865327U CN208865327U CN201821172485.2U CN201821172485U CN208865327U CN 208865327 U CN208865327 U CN 208865327U CN 201821172485 U CN201821172485 U CN 201821172485U CN 208865327 U CN208865327 U CN 208865327U
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- filter bag
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Abstract
The utility model discloses a kind of single machine pulse belt dedusters, including cabinet, ash bucket, air-purifying chamber, pulse valve and filter bag, the bottom four corners of cabinet are welded with support leg, it is welded with dust air on the right side of cabinet and enters pipe, the inside of cabinet includes filter chamber, and the bottom of cabinet is welded with ash bucket, and the bottom of ash bucket includes ash releasing tube, flap valve is fixedly installed at left and right sides of ash releasing tube, the inside of flap valve includes lift lever.This kind of single machine pulse belt deduster, run through at the middle part of filter bag installation top plate and is connected with filter bag, pass through filter bag, filtering of the dusty gas through filter bag, adsorbing powder dust is on the surface of filter bag, when the surface dirt of filter bag savings is to certain degree, gas is sprayed into special-shaped jet pipe, when the gas risen in the gas and filter bag that special-shaped jet pipe sprays into is collided so that filter bag expands, at this moment, the dust of filter bag surface, which falls off, falls in ash bucket, then, filter bag restores to the original state, to play the continual effect being dusted.
Description
Technical field
The utility model relates to deduster field, in particular to a kind of single machine pulse belt deduster.
Background technique
Deduster is a kind of using mechanical generation suction, then by suction to the upper of dust, work of the dust in suction
With the lower inside into deduster, then, the inside of deduster is filtered the air of sucking, and dust is filtered out and is collected into
In ash bucket, then, clean air is discharged.
Authorization Notice No. discloses a kind of air box impulse belt deduster for the Chinese patent of CN 202802997U, including
Upper cover, upper box, cylinder, pulse valve, pulse blowing pipe, middle cabinet, filter bag, bracket, ash bucket, unloading valve, cylinder push-rod, promotion
Valve, air inlet and outlet the utility model has the beneficial effects that the utility model to overcome chamber-dividing counter-blowing deashing intensity poor,
The shortcomings that pulse jetting deashing is with filtering while carrying out, expands the application range of air box impulse bag-type dust remover, but existing
Deduster dust removing effects it is poor, efficiency of dust collection is low, and the dust inside filter bag cannot be removed effectively, and can only replace filter bag, pulse valve
The high pressure gas of interior ejection insufficient pressure, dust of bulky grain when dispersion is to multiple filter bags can also be raised air-flow and take filter bag to
On, the dust needs inside ash bucket are manually excluded.
Utility model content
In view of the deficienciess of the prior art, the purpose of the utility model is to provide a kind of single machine pulse belt deduster,
It is poor to solve previous deduster dust removing effects, the low problem of efficiency of dust collection, the dust solved inside previous filter bag cannot be effective
Removal, the problem of can only replacing filter bag, solving the high pressure gas sprayed in pulse valve, pressure is not when dispersion is to multiple filter bags
The problem of foot, the dust for solving bulky grain can also be raised air-flow and take on filter bag, and the burden of sock filtration dust is caused to add
Again, the problem of causing pulse valve frequently to be opened, solves the problems, such as that the dust needs inside previous ash bucket are manually excluded.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of single machine pulse belt
Deduster, including cabinet, ash bucket, air-purifying chamber, pulse valve and filter bag, the bottom four corners of the cabinet are welded with support leg, described
It is welded with dust air on the right side of cabinet and enters pipe, the inside of the cabinet includes filter chamber, and the filter chamber top is fixedly connected
There is filter bag that top plate is installed, through filter bag is connected with, the bottom of the cabinet is welded with ash bucket at the middle part of the filter bag installation top plate,
The bottom of the ash bucket includes ash releasing tube, is fixedly installed with flap valve at left and right sides of the ash releasing tube, the flap valve it is interior
Portion includes lift lever, and the bottom of the lift lever is connected with spigot baffle, and sliding block, institute are welded at the top of the lift lever
It states and is fixedly connected to spring at left and right sides of sliding block, air-purifying chamber is fixedly installed at the top of the cabinet, the air-purifying chamber
Left side is plugged with exhaust column, and the bottom of the exhaust column is fixedly installed with cushion cap, and pulse valve is fixedly mounted in the left side of the cabinet,
The bottom of the pulse valve is fixedly installed with pulse valve support frame, and the pulse valve support frame is welded on the left side of cabinet, described
The front of pulse valve is plugged with air inlet pipe.
Further, filter plate is fixedly installed on the right side of the filter chamber, surface is uniformly covered with tiny circular filter
Hole.
Further, the top of the filter bag is fixedly installed with special-shaped jet pipe, and the top of special-shaped jet pipe is connected to jet pipe
On, and the centre of special-shaped jet pipe is small, both ends are big.
Further, the front of the cabinet is fixedly installed with maintenance ladder, and the top of maintenance ladder is fixed on air-purifying chamber,
The front of the cabinet is connected with maintenance door, and maintenance door is connected to filter chamber.
Further, the bottom end of the filter plate is welded with baffle, and left side from baffle to cabinet and with ash bucket
Inner wall is parallel.
Further, the inside of the flap valve is fixedly installed with electromagnet, and electromagnet is tight in the outer wall of " strip "
It is close to be fitted with the coil that be powered.
Further, system fan is fixedly connected on the left of the exhaust column, and system fan is by exhaust column and only
The inside of gas chamber is connected to.
Further, the pulse valve includes jet pipe, and jet pipe is located at the inside of cabinet, and at the top of filter chamber.
In conclusion the utility model has the following beneficial effects:
1, this kind of single machine pulse belt deduster, at the middle part of filter bag installation top plate through being connected with filter bag, by filter bag,
After dusty gas enters filter chamber, thinner dust can rise the position for reaching filter bag in dusty gas, through filter bag
Filtering, adsorbing powder dust is on the surface of filter bag, and then, cleaned gas enters in air-purifying chamber by filter pocket mouths, when the table of filter bag
When dusty complexion soil savings is to certain degree, gas is sprayed into special-shaped jet pipe, is risen when in the gas and filter bag that special-shaped jet pipe sprays into
Gas collided so that filter bag expand, at this moment, the dust of filter bag surface, which falls off, to be fallen in ash bucket, then, filter bag restore
Original state filters dust gas again, and it is poor to solve previous deduster dust removing effects, the low problem of efficiency of dust collection, to play not
The intermittent effect being dusted.
2, this kind of single machine pulse belt deduster is fixedly mounted pulse valve in the left side of cabinet and works as equipment by pulse valve
Resistance reach certain value when, pulse valve open, at this moment, pulse valve by the high pressure gas moment put aside it inside ejection, at this moment,
High pressure gas enters special-shaped jet pipe by jet pipe, and enters in filter bag from special-shaped jet pipe, and the gas risen with filter bag rushes
It hits, filter bag is caused to expand, the gas of filter bag surface is shaken off, solving the dust inside previous filter bag cannot be removed effectively, only
The problem of filter bag can be replaced, to play the dust on effective removal filter bag, the effect for allowing filter bag to be recycled.
3, this kind of single machine pulse belt deduster is fixedly installed with special-shaped jet pipe on the top of filter bag, by special-shaped jet pipe,
It can be in the gas in pulse valve after entering in jet pipe, using the shape at small both ends in the middle part of special-shaped jet pipe in the special-shaped jet pipe of entrance
Gas carry out compression accelerate the flow velocity of gas, then, gas compressed is sprayed from special-shaped jet pipe high speed, at this moment, two
The efficient back draught of stock expands filter bag suddenly, solves the high pressure gas sprayed in pulse valve in dispersion to multiple filter bags
When insufficient pressure the problem of, so special-shaped jet pipe is played gas second compression again, the effect that filter bag is effectively expanded.
4, this kind of single machine pulse belt deduster, is fixedly installed with filter plate on the right side of filter chamber, can by filter plate
The dust air entered in pipe will be entered from dust air and carry out first filtering, at this moment, the large dust particle in air is filtered
Plate filtering is fallen in ash bucket, and at this moment, short grained dust passes through from the aperture of filter plate, and is entered pipe by dust air and entered
Ascending air take on filter bag, the dust for solving bulky grain can also be raised air-flow and take on filter bag, cause sock filtration
The burden of dust, the problem of causing pulse valve frequently to be opened, so filter plate, which plays, mitigates filter bag and pulse valve burden
Effect.
5, this kind of single machine pulse belt deduster, flap valve is fixedly installed at left and right sides of ash releasing tube, passes through turnover panel
Valve can be opened when the dust inside ash bucket is put aside to certain degree, and at this moment, the electromagnet inside flap valve is powered, and be utilized
Sliding block is adsorbed on electromagnet by magnetism, and at this moment, lift lever rises, and pulls spigot baffle to open, solves inside previous ash bucket
Dust need manually the problem of being excluded, endanger staff to play to reduce manpower consumption while also avoiding dust
The effect of health.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model；
Fig. 2 is the internal cross section figure of the utility model；
Fig. 3 is the filter bag expansion process schematic diagram of the utility model；
Fig. 4 is the flap valve figure of the utility model；
Fig. 5 is the flap valve internal structure chart of the utility model.
In figure, 1, cabinet, 101, support leg；102, maintenance ladder；103, maintenance door；104, dust air enters pipe；105, mistake
Filter chamber；106, filter plate；107, baffle；2, ash bucket；201, ash releasing tube；202, flap valve；2021, lift lever；2022, electromagnetism
Iron；2023, sliding block；2024, spring；203, spigot baffle；3, air-purifying chamber；301, cushion cap；302, system fan；303, exhausting
Pipe；4, pulse valve；401, pulse valve support frame；402, air inlet pipe；403, jet pipe；404, special-shaped jet pipe；5, filter bag installs top plate；
501, filter bag.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of single machine pulse belt deduster, including case
Body 1, ash bucket 2, air-purifying chamber 3, pulse valve 4 and filter bag 501, the bottom four corners of cabinet 1 are welded with support leg 101, the right side of cabinet 1
It is welded with dust air and enters pipe 104, the inside of cabinet 1 includes filter chamber 105, and 105 top of filter chamber is fixedly connected with filter bag peace
Top plate 5 is filled, the middle part of filter bag installation top plate 5, by filter bag 501, enters filter chamber in dusty gas through filter bag 501 is connected with
After 105, thinner dust can rise the position for reaching filter bag in dusty gas, filter through filter bag 501, then, be cleaned
Gas enter in air-purifying chamber 3 by filter pocket mouths, when the surface dirt of filter bag 501 savings is to certain degree, special-shaped jet pipe
Gas is sprayed into 404, when the gas risen in the gas and filter bag 501 that special-shaped jet pipe 404 sprays into is collided so that filter bag 501
Expansion, at this moment, the dust on 501 surface of filter bag, which falls off, to be fallen in ash bucket, and then, filter bag 501 restores to the original state, and filters dust again
Gas, it is poor to solve previous deduster dust removing effects, the low problem of efficiency of dust collection, to play the continual effect being dusted
Fruit, the bottom of cabinet 1 are welded with ash bucket 2, and the bottom of ash bucket 2 includes ash releasing tube 201, the fixed peace in the left and right sides of ash releasing tube 201
Equipped with flap valve 202, by flap valve 202, it can open when the dust inside ash bucket 2 is put aside to certain degree, at this moment, turn over
Electromagnet 20222 inside plate valve 202 is powered, and sliding block 2023 is adsorbed on electromagnet 20222 using magnetism, at this moment, is promoted
Bar 2021 rises, and spigot baffle 203 is pulled to open, to play the effect for reducing manpower consumption, the inside of flap valve 202 includes
Lift lever 2021, the bottom of lift lever 2021 are connected with spigot baffle 203, and the top of lift lever 2021 is welded with sliding block
2023, the left and right sides of sliding block 2023 is fixedly connected to spring 2024, and the top of cabinet 1 is fixedly installed with air-purifying chamber 3, net gas
The left side of room 3 is plugged with exhaust column 303, and the bottom of exhaust column 303 is fixedly installed with cushion cap 301, and the left side of cabinet 1 is fixedly mounted
Pulse valve 4, by pulse valve 4, when the resistance of equipment reaches certain value, pulse valve 4 is opened, and at this moment, pulse valve 4 will be inside it
High pressure gas spray, at this moment, high pressure gas is logical to be entered in filter bag 501, and the gas risen with filter bag 501 collides, and causes
Filter bag 501 expands, and the gas on 501 surface of filter bag is shaken off, and solving the dust inside previous filter bag 501 cannot be removed effectively,
The problem of filter bag 501 can only be replaced, to play the dust on effective removal filter bag 501, the effect for allowing filter bag 501 to be recycled
Fruit, the bottom of pulse valve 4 are fixedly installed with pulse valve support frame 401, and pulse valve support frame 401 is welded on the left side of cabinet 1, arteries and veins
The front for rushing valve 4 is plugged with air inlet pipe 402.
Further, the right side of filter chamber 105 is fixedly installed with filter plate 106, and 106 surface of filter plate is uniformly covered with carefully
Small circular filter hole can will enter the bulky grain powder of the dust air entered in pipe 104 by filter plate 106 from dust air
Dirt filtering, at this moment, short grained dust passes through from the aperture of filter plate 106, and enters the upper lift-off that pipe enters by dust air
Gas takes on filter bag 501, and the dust for solving bulky grain can also be raised air-flow and take on filter bag 501, and filter bag 501 is caused to filter
The burden of dust leads to the frequent the problem of opening of pulse valve 4, so filter plate 106, which plays, mitigates filter bag 501 and pulse
The effect that valve 4 is born.
Further, the top of filter bag 501 is fixedly installed with special-shaped jet pipe 404, and the top of special-shaped jet pipe 404 is connected to
On jet pipe 403, and the centre of special-shaped jet pipe 404 is small, and both ends are big, by special-shaped jet pipe 404, can the gas in pulse valve 4 from
After entering in jet pipe 403, the gas entered in special-shaped jet pipe 404 is carried out using the shape at the special-shaped 404 small both ends in middle part of jet pipe
Compression accelerates the flow velocity of gas, and then, gas compressed is sprayed from special-shaped 404 high speed of jet pipe, and at this moment, back draught makes
Filter bag expands suddenly, solve the high pressure gas that sprays in pulse valve 4 insufficient pressure when dispersion is to multiple filter bags 501 and ask
Topic, so special-shaped jet pipe 404 is played gas second compression again, the effect that filter bag 501 is effectively expanded.
Further, the front of cabinet 1 is fixedly installed with maintenance ladder 102, and the top of maintenance ladder 102 is fixed on air-purifying chamber
On 3, the front of cabinet 1 is connected with maintenance door 103, and maintenance door 103 is connected to filter chamber 105, passes through 103 He of maintenance door
Maintenance ladder 102 can get on when deduster is needed replacing and broken down inside filter bag 501 or deduster from maintenance ladder 102,
And enter in cabinet 1 from maintenance door 103, directly in arrival filter chamber 105, the component inside filter chamber 105 is overhauled, institute
The convenient effect to deduster replacement component and maintenance is played with maintenance door 103 and maintenance ladder 102.
Further, the bottom end of filter plate 106 is welded with baffle 107, and left side from baffle 107 to cabinet 1 and with
The inner wall of ash bucket 2 is parallel, passes through baffle 107, when dust air, which fills dust air, enters the entrance of pipe 104, quality biggish big
Grain dust is stopped by filter plate 106, and falls, and still, because there is the reason of air-flow, still has part from filter plate 106
The bulky grain dust fallen is blown on filter bag 501 by air-flow from the bottom of filter plate 106, so baffle 107 is just played that
The dust filtered a bit all imports the effect in ash bucket 2.
Further, the inside of flap valve 202 is fixedly installed with electromagnet 2022, and electromagnet 2022 is in " strip "
Outer wall is closely fitted with the coil that can be powered, by electromagnet 2022, when needing spigot baffle 203 opening exclusion dust,
Coil outside electromagnet 20222 is powered, and at this moment, electromagnet 2022 generates magnetism, and sliding block 2023 is adsorbed onto electromagnet 20223
On, at this moment, lift lever 2021 rises, and spigot baffle 203 is opened, so electromagnet 20222, which is played, generates drawing by magnetism
The effect that power opens spigot baffle 203.
Further, the left side of exhaust column 303 is fixedly connected with system fan 302, and system fan 302 passes through exhaust column
303 are connected to the inside of air-purifying chamber 3, by system fan 302, can start when deduster works, generate suction, at this moment, inhale
Power is extracted out the gas that completion is filtered in air-purifying chamber 3 from air-purifying chamber 3 by exhaust column 303, is discharged into atmosphere, meanwhile, extraction
Gas leaf ensure that the air pressure balance inside cabinet 1, and the dust in air can be risen, so system fan is played gas
Body extracts the effect of the pressure balance in guarantee system out.
Further, pulse valve 4 includes jet pipe 403, and jet pipe 403 is located at the inside of cabinet 1, the top of filter chamber 105.
By jet pipe 403, the compressed air in pulse valve 4 can be imported, and dispersed to the special-shaped jet pipe 404 installed on jet pipe 403,
At this moment, the air continued compression inside special-shaped jet pipe 404 guarantees when pulse valve 4 is opened have on each abnormal shape jet pipe 404
The entrance of compressed air, to play the evenly dispersed effect to special-shaped jet pipe of the air on pulse valve.
Working principle: firstly, deduster is opened, then, dusty gas is entered in pipe 104 to import dedusting from dust air
Device, at this moment, from reaching on filter plate 106, the dust of bulky grain is filtered dusty gas by filter plate 106, and falls along baffle 107
It falls on ash bucket 2, at this moment, short grained dust and air enter filter chamber 105 from the aperture on filter plate 106, at this moment, on
Air-flow is risen from, by entering in air-purifying chamber 3 from the opening of filter bag 501, at this moment, system fan 302 will be in air-purifying chamber 3 in filter bag 501
The air in portion is extracted out, meanwhile, the dust in air is filtered by filter bag 501, and is left on the appearance of filter bag 501, when on filter bag 501
Dust savings to certain degree when, pulse valve 4 is opened, and the gas of compression is sprayed, and at this moment, gas enters from jet pipe 403, is arrived
Up to special-shaped jet pipe 404, special-shaped jet pipe 404 compresses air-flow, sprays into filter bag 501, at this moment, ascending air filter bag 501 inside and
Down current collides, and at this moment, filter bag 501 expands, and the dust on filter bag 501 is fallen in ash bucket 2, meanwhile, inside flap valve 202
Electromagnet 20222 be powered, sliding block 2023 is upper under the action of electromagnetism to be slided, and at this moment, lift lever 2021 rises, spigot baffle 203
It opens again, the dust inside ash bucket 2 is fallen from ash releasing tube 201, and when dust drains, flap valve 202 is closed, and electromagnet 2022 loses
Magnetism is gone, sliding block 2023 moves down under the action of the spring, and spigot baffle 203 is finally closed.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of single machine pulse belt deduster, including cabinet (1), ash bucket (2), air-purifying chamber (3), pulse valve (4) and filter bag
(501), it is characterised in that: the bottom four corners of the cabinet (1) are welded with support leg (101), the right side welding of the cabinet (1)
There is dust air to enter pipe (104), the inside of the cabinet (1) includes filter chamber (105), and filter chamber (105) top is fixed
It is connected with filter bag installation top plate (5), the middle part of filter bag installation top plate (5), which is run through, is connected with filter bag (501), the cabinet
(1) bottom is welded with ash bucket (2), and the bottom of the ash bucket (2) includes ash releasing tube (201), the left and right of the ash releasing tube (201)
Two sides are fixedly installed with flap valve (202), and the inside of the flap valve (202) includes lift lever (2021), the lift lever
(2021) bottom is connected with spigot baffle (203), is welded with sliding block (2023), institute at the top of the lift lever (2021)
It states and is fixedly connected at left and right sides of sliding block (2023) spring (2024), be fixedly installed with net gas at the top of the cabinet (1)
Room (3) is plugged with exhaust column (303) on the left of the air-purifying chamber (3), and the bottom of the exhaust column (303), which is fixedly installed with, holds
Pulse valve (4) are fixedly mounted in the left side of platform (301), the cabinet (1), and the bottom of the pulse valve (4) is fixedly installed with pulse
Valve support frame (401), the pulse valve support frame (401) are welded on the left side of cabinet (1), and the front of the pulse valve (4) is inserted
It is connected to air inlet pipe (402).
2. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the filter chamber (105)
Right side is fixedly installed with filter plate (106), and the surface of filter plate (106) is uniformly covered with tiny circular filter hole.
3. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the top of the filter bag (501)
End is fixedly installed with special-shaped jet pipe (404), and the top of the abnormal shape jet pipe (404) is connected on jet pipe (403), and special-shaped jet pipe
(404) centre is small, and both ends are big.
4. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the front of the cabinet (1)
It is fixedly installed with maintenance ladder (102), and the top of maintenance ladder (102) is fixed on air-purifying chamber (3), the front of the cabinet (1)
It is connected with maintenance door (103), and maintenance door (103) is connected to filter chamber (105).
5. a kind of single machine pulse belt deduster according to claim 2, it is characterised in that: the filter plate (106)
Bottom end is welded with baffle (107), and baffle (107) is to the left side of cabinet (1) and parallel with the inner wall of ash bucket (2).
6. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the flap valve (202)
Inside is fixedly installed with electromagnet (2022), and electromagnet (2022) is closely fitted with the line that can be powered in the outer wall of " strip "
Circle.
7. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the exhaust column (303)
Left side is fixedly connected with system fan (302), and system fan (302) is connected by the inside of exhaust column (303) and air-purifying chamber (3)
It is logical.
8. a kind of single machine pulse belt deduster according to claim 1, it is characterised in that: the pulse valve (4) includes
Jet pipe (403), and jet pipe (403) is located at the inside of cabinet (1), and at the top of filter chamber (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172485.2U CN208865327U (en) | 2018-07-24 | 2018-07-24 | A kind of single machine pulse belt deduster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172485.2U CN208865327U (en) | 2018-07-24 | 2018-07-24 | A kind of single machine pulse belt deduster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208865327U true CN208865327U (en) | 2019-05-17 |
Family
ID=66463376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821172485.2U Active CN208865327U (en) | 2018-07-24 | 2018-07-24 | A kind of single machine pulse belt deduster |
Country Status (1)
| Country | Link |
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| CN (1) | CN208865327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322579A (en) * | 2021-11-15 | 2022-04-12 | 兰州有色冶金设计研究院有限公司 | Smelting flue gas cooler |
-
2018
- 2018-07-24 CN CN201821172485.2U patent/CN208865327U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322579A (en) * | 2021-11-15 | 2022-04-12 | 兰州有色冶金设计研究院有限公司 | Smelting flue gas cooler |
| CN114322579B (en) * | 2021-11-15 | 2024-03-29 | 兰州有色冶金设计研究院有限公司 | Smelting flue gas cooler |
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