CN107694241A - A kind of waste gas dust-removal device - Google Patents

A kind of waste gas dust-removal device Download PDF

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Publication number
CN107694241A
CN107694241A CN201711186161.4A CN201711186161A CN107694241A CN 107694241 A CN107694241 A CN 107694241A CN 201711186161 A CN201711186161 A CN 201711186161A CN 107694241 A CN107694241 A CN 107694241A
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China
Prior art keywords
cylinder
dust
settling box
purification tank
water
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Granted
Application number
CN201711186161.4A
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Chinese (zh)
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CN107694241B (en
Inventor
王健
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Xiangtan Changyang Environmental Protection Technology Co ltd
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Ningbo Jiangbei Qing Wei Environmental Protection Technology Co Ltd
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Priority to CN201711186161.4A priority Critical patent/CN107694241B/en
Publication of CN107694241A publication Critical patent/CN107694241A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The application is related to field of Environment Protection, specifically discloses waste gas dust-removal device, and it includes frame, purification tank and flue gas leading, and the lower section of purification tank is provided with settling box;Cylinder is arranged with the middle part of settling box, cylinder is rotatablely connected with settling box and cylinder can slide up and down relative to settling box, guide ring is connected with by unilateral bearing on cylinder, precipitation drum outer wall is provided with spiral guide slot, the guide pad coordinated with spiral guide slot is fixed with guide ring;The bottom of cylinder is provided with valve, and valve element is opened by valve during centrifugal force;Settling box is provided with the leaking hole that can be connected with cylinder, and cylinder can block leaking hole along settling box slide downward;The lower section of purification tank is provided with dust-collecting bucket, and dust-collecting bucket upper end closed, cylinder are connected by cylinder by click with dust-collecting bucket, and the bottom of dust-collecting bucket is connected with the drainpipe for extending to purification tank;The device contributes to dust to precipitate, and improves the utilization rate of water.

Description

A kind of waste gas dust-removal device
Technical field
The present invention relates to field of Environment Protection, and in particular to a kind of waste gas dust-removal device.
Background technology
At present production of electronic components, battery (storage battery) production, pickling job shop, experimental laboratory air exhausting, metallurgy, chemical plant, Medical factory, Painting Shop, food and brewage, Furniture manufacturing, food and drink, process in the industry such as plastic products during meeting The particulate matters such as a large amount of micro heavies and dust are produced, these particulate matters are mixed in the offgas, together discharged with waste gas.Such as without Crossing processing, just discharge in an atmosphere, will pollute to environment, and prior art mainly passes through filter bag, electrostatic principle, activity Charcoal uses mode cleaning organic waste gas and the dust such as Water spray.
Absorption wherein for dust is typically using spray or directly waste gas is passed through in water, to absorb waste gas by water In dust.After the dust accumulation in due to water is excessive, bubble will be formed in water because waste gas is passed through in water, bubble will make It is in vibrational state in water, so as to which the dust in water will be unable to settle;Therefore as the time for being passed through waste gas increases, suspended in water Dust will be on the increase, and can't bear water muddiness, then need in time to discharge water, and add clear water.At present, water resource is extremely deficient It is weary, save and also conducted vigorous propaganda using water resource, while people are also stepped up to saving using the consciousness of water resource, therefore again All turn into new research topic in all trades and professions using the utilization rate of water resource and enhancing water resource again.Therefore how will be used to inhale The water for receiving dust is reused, and is to need to solve the problems, such as with saving water resource.
The content of the invention
It is an object of the invention to provide a kind of waste gas dust-removal device, so that the profit of water can be improved when being purified to waste gas Use efficiency.
To reach above-mentioned purpose, base case of the invention is as follows:
Waste gas dust-removal device includes frame, the purification tank being fixed in frame and the flue gas leading stretched into purification tank, described The lower section of purification tank is provided with settling box, and the floor space of purification tank is more than the floor space of settling box;The middle part of the settling box is provided with It is sheathed on the cylinder of settling box periphery, cylinder is rotatablely connected with settling box and cylinder can be relative to gliding on settling box It is dynamic, guide ring is connected with by unilateral bearing on cylinder, the precipitation drum outer wall is provided with spiral guide slot, the guide ring On be fixed with spiral guide slot coordinate guide pad;The top and bottom of cylinder are bonded with the outer wall of settling box, separation Disengagement chamber is formed between the middle part of cylinder and the outer wall of settling box, the bottom of cylinder is provided with valve, and valve includes valve seat and is located at Valve element and back-moving spring in valve seat, valve element can radially sliding along cylinder, valve element opened by valve during centrifugal force;It is described Settling box is provided with the leaking hole that can be connected with disengagement chamber, and cylinder can block leaking hole along settling box slide downward;It is described The dust-collecting bucket being fixed in frame is additionally provided with below purification tank, the settling box and cylinder are respectively positioned in dust-collecting bucket, and point Dust-collecting bucket upper end closed, cylinder are connected by click with dust-collecting bucket from cylinder, the bottom of dust-collecting bucket is connected with drainpipe, The free end of drainpipe extends to the top of purification tank;The frame is provided with the drive mechanism that driving cylinder slides up and down.
The principle of this programme waste gas dust-removal device is:
During by the device cleaning organic waste gas and dust, clear water is first added into purification tank, while can be filled in settling box Qing Dynasty's water.Open flue gas leading, the then water that the organic exhaust gas and dust constantly discharged by flue gas leading will be constantly passed through in purification tank In, so as to form bubble in water of the waste gas in purification tank, and the rising in water from the water surface until discharge.Waste gas shape in water During into bubble, the dust mixed in the offgas will be adsorbed on the surface of bubble, and after bubbles burst is discharged from the water surface, dust still stays In water, so as to carry out a certain degree of purification to waste gas.
During flue gas leading is passed through waste gas into purification tank, drive mechanism is also driving cylinder up and down reciprocatingly simultaneously Slide.When cylinder up and down reciprocatingly slides, guide ring also follows cylinder while moved back and forth up and down;And guide ring is provided with The guide pad coordinated with the spiral guide slot on precipitation cylinder, therefore when guide pad slides up and down relative to precipitation cylinder, in spiral Under the guide effect of guide groove, guide pad can be simultaneously relative to precipitation cylinder reciprocating rotation.Because guide pad and cylinder pass through list It is rotatablely connected to bearing, and cylinder is connected with dust-collecting bucket by click, so as to which when guide pad rotates, guide pad can band Dynamic cylinder one-directional rotation.
In this programme, when guide pad moves up relative to precipitation cylinder, click will limit cylinder and rotate, from And cylinder moves up only with respect to precipitation cylinder, because the valve element of valve is not affected by centrifugal action, therefore valve is closed, point When being moved upward to the top from cylinder, disengagement chamber connects with leaking hole, so as to which the water in precipitation cylinder enters in disengagement chamber, and stores In disengagement chamber.And when guide pad moves down relative to precipitation cylinder, guide pad will be by unilateral bearing to cylinder transmission Moment of torsion, and click also rotates without limitation on cylinder, then during cylinder moves down, cylinder rotates simultaneously; When cylinder rotates, the valve element of valve by centrifugal action by along the radially outward slip of cylinder so that valve is opened, Therefore the water in disengagement chamber will be flowed into dust-collecting bucket by valve.And due to when cylinder rotates, the water in disengagement chamber also will be in Swirl shape flows, and so as to which the impurity in water also will be subject to centrifugal forces, under the influence of centrifugal force, impurity is attached to separation In the side wall of cylinder so that impurity will not enter in dust-collecting bucket, i.e., water is purified.Further, since cylinder is by dust-collecting bucket Upper end closed, during cylinder moves down relative to dust-collecting bucket, the pressure made in dust-collecting bucket is increased, so as to will Water in dust-collecting bucket extrudes from drainpipe, water is again returned in purification tank.
After water in settling box enters disengagement chamber, the water in purification tank will be caused to flow downward, then purify the water of trench bottom Into in settling box, precipitated, and top is stayed in purification tank with respect to clear water, so as to reduce the water in purification tank Dust.Because the sectional area of settling box is smaller, and the depth of the bottom of the water surface distance settling box in purification tank is also bigger, because When this is passed through waste gas into purification tank, it is smaller to purify influence of the vibration of trough inner water to the water in settling box, i.e., in settling box Water is relatively tranquil, beneficial to contamination precipitations such as dust.
In summary, by setting settling box so that when being passed through waste gas to purification tank, purify the vibration of trough inner water to heavy The influence of water in the groove of shallow lake is smaller, therefore contributes in settling box to carry out precipitation process to water.And by setting cylinder, can be right Water and impurity in settling box are further separated, and are returned it into purification tank and reused;And in cylinder not When being rotated relative to precipitation cylinder, the water in settling box will enter in disengagement chamber, so that the water in purification tank flows downward, make net The sewage of change trench bottom, which enters in settling box, to be precipitated, and the relative clear water entered in purification tank then stays in purification tank In, to continue to purify waste gas, so as to reuse water, and suspension aniseed dust in the water of purification tank is prevented, led Cause to reduce the detergent power of waste water.
Preferred scheme one:As the further optimization to base case, the purification tank and settling box pass through in back taper Guide shell connection.Because guide shell upper end area is big, enter so as to be advantageous to purify the sewage of trench bottom in precipitation cylinder, and keep away The water for exempting from purification tank endosexine is inhaled into precipitation cylinder.
Preferred scheme two:As the further optimization to preferred scheme one, the inwall of the cylinder is provided with detachably Porous adsorption layer.When cylinder rotates, will be entered by the impurity that centrifugal force moves out in the hole in adsorption layer, with Impurity is adsorbed, improves the separating effect to impurity.
Preferred scheme three:As the further optimization to preferred scheme two, the edge of the purification tank is provided with excessive groove, mistake The upper end for spending groove is higher than the upper end of purification tank, and the free end of the drainpipe is located at the surface of excessive groove.Drainpipe first will Water is discharged into excessive groove, then water will diffuse out after entering in excessive groove from the edge of excessive groove, and is entered in purification tank, due to purification The vibration of water in groove close to edge is generally smaller, so as to avoid the water for just flowing into purification tank from being mixed with original water rapidly Close, and immediately wicked into precipitation cylinder.
Preferred scheme four:As the further optimization to preferred scheme three, the top and bottom of the cylinder and precipitation Sealing ring is equipped between the outer wall of bucket, the sealing property of disengagement chamber can be improved.
Brief description of the drawings
Fig. 1 is the structural representation of this bright waste gas dust-removal device embodiment;
Fig. 2 is the structural representation of valve in this bright waste gas dust-removal device embodiment.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference in Figure of description includes:Purification tank 10, guide shell 11, settling box 12, cylinder 13, excessive groove 14th, leaking hole 15, cylinder 30, guide ring 31, adsorption layer 32, unilateral bearing 33, valve seat 34, back-moving spring 35, valve element 36, collection Bucket 40, drainpipe 42, click 43, flue gas leading 50.
Embodiment is substantially as shown in Figure 1 and Figure 2:
The waste gas dust-removal device of the present embodiment includes frame, purification tank 10, dust-collecting bucket 40, flue gas leading 50 and drive mechanism. Purification tank 10 and dust-collecting bucket 40 are fixed in frame, and flue gas leading 50 is stretched into purification tank 10.The lower section of purification tank 10 is provided with precipitation Bucket 12, purification tank 10 and settling box 12 are cylindric;The floor space of purification tank 10 is more than the floor space of settling box 12, and purifies Groove 10 is with settling box 12 by being connected in the guide shell 11 of back taper.The middle part of settling box 12 is provided with and is sheathed on the periphery of settling box 12 Cylinder 30, cylinder 30 is rotatablely connected with settling box 12 and cylinder 30 can slide up and down relative to settling box 12.Separation The stroke that cylinder 30 slides up and down relative to settling box 12 is limited, is the top dead centre of cylinder 30 when cylinder 30 is in extreme higher position, It is the lower dead center of cylinder 30 when cylinder 30 is in extreme lower position, cylinder 30 is only capable of moving between top dead centre and lower dead center. Outer wall of the top and bottom of cylinder 30 with settling box 12 is bonded, and the top and bottom of cylinder 30 and settling box 12 is outer Sealing ring is equipped between wall, reveals to prevent stopping leak, disengagement chamber is formed between the middle part of cylinder 30 and the outer wall of settling box 12, and The inwall of cylinder 30 is provided with adsorption layer 32, adsorption layer 32 made of sponge and is connected in cylinder 30.Cylinder 30 Bottom is provided with valve, and valve includes valve seat 34 and valve element 36 and back-moving spring 35 in valve seat 34, valve element 36 can be along separation Cylinder 30 radially slides, and back-moving spring 35 is stage clip, one end of back-moving spring 35 is pressed on valve element 36, when valve element 36 by from During mental and physical efforts, pressed home spring 35 shrinks back-moving spring 35 by valve element 36, then the movement of valve element 36 makes valve be in opening. When valve element 36 is not by centrifugal force, back-moving spring 35, which promotes valve element 36 to reset, makes valve be closed mode.
The upper end of cylinder 30 is provided with the guide ring 31 being rotatablely connected with cylinder 30, and cylinder 30 and guide ring 31 are logical Unilateral bearing 33 to be crossed to connect, cylinder 30 is then connected with dust-collecting bucket 40 by click 43, i.e., when guide ring 31 rotates forward, Guide ring 31 will transmit torsion by unilateral bearing 33, and now click 43 is also small to resistance caused by cylinder 30, so as to Guide ring 31 can drive cylinder 30 together to rotate;And when guide ring 31 rotates backward, guide ring 31 transmits to cylinder 30 Moment of torsion it is small, and click 43 is big to resistance caused by cylinder 30, then cylinder 30 will not rotate.Precipitate drum outer wall Upper end is provided with spiral guide slot, integrally formed with the guide pad coordinated with spiral guide slot on guide ring 31, then the phase of guide ring 31 When being slided up and down for precipitation cylinder, guide ring 31 will rotate, and when 31 slide downward of guide ring, guide ring 31 rotates forward, and lead During to 31 upward sliding of ring, guide ring 31 inverts.Click 43 includes the outer ring that can mutually rotate and inner ring, outer ring are fixed on On dust-collecting bucket 40, and outer ring inner peripheral surface is provided with ratchet, and on inner ring, cylinder 30 is connected ratchet with inner ring spline, so as to When cylinder 30 moves up and down, click 43 will not produce displacement in vertical direction.Settling box 12 is provided with some leaking holes 15, when cylinder 30 is in top dead center position, leaking hole 15 connects settling box 12 with disengagement chamber;When cylinder 30 is in down During dead-centre position, the side wall on the top of cylinder 30 can block leaking hole 15, and now settling box 12 does not connect with cylinder 30.
Dust-collecting bucket 40 is located at the lower section of purification tank 10, and settling box 12 and cylinder 30 are respectively positioned in dust-collecting bucket 40, separation The lower end of cylinder 30 is by the upper end closed of dust-collecting bucket 40.The bottom of dust-collecting bucket 40 is connected with drainpipe 42, and the edge of purification tank 10 is set There is excessive groove 14, the upper end of excessive groove 14 is higher than the upper end of purification tank 10, and the free end of drainpipe 42 extends to excessive groove 14 Surface.Drive mechanism in the present embodiment uses cylinder 13, and the cylinder body of cylinder 13 is fixed in frame, the periphery card of cylinder 30 Conjunction has drive ring, and drive ring can rotate relative to cylinder 30, and piston rod and the drive ring of cylinder 13 are fixed, so as to pass through gas Cylinder 13 is flexible can to drive cylinder 30 to slide up and down.
The specific work process of the present embodiment waste gas dust-removal device is:
Clear water is added into purification tank 10, then when being passed through waste gas into purification tank 10, due to settling box 12 sectional area compared with Small, the depth of the bottom of the water surface distance settling box 12 in purification tank 10 is also bigger, and the vibration of water is to precipitation in purification tank 10 The influence of water in bucket 12 is smaller, i.e., the water in settling box 12 is relatively tranquil, beneficial to contamination precipitation.Drive mechanism drives Cylinder 30 up and down reciprocatingly slides, and when cylinder 30 up and down reciprocatingly slides, guide ring 31 also follows cylinder 30 simultaneously upper and lower Move back and forth;When guide pad moves up relative to precipitation cylinder, cylinder 30 moves up only with respect to precipitation cylinder, valve Valve element 36 is not affected by centrifugal action, therefore valve is closed, and when cylinder 30 is in top dead centre, disengagement chamber connects with leaking hole 15 Logical, the water in precipitation cylinder enters in disengagement chamber, and is stored in disengagement chamber.When guide pad moves down, cylinder 30 is simultaneously Rotate;When cylinder 30 rotates, the valve element 36 of valve opens valve, therefore the water in disengagement chamber will by centrifugal action Flowed into by valve in dust-collecting bucket 40.And because when cylinder 30 rotates, the water in disengagement chamber flows in swirl shape, so as in water Impurity also will be subject to centrifugal forces, under the influence of centrifugal force, impurity is attached in the side wall of cylinder 30 so that miscellaneous Matter will not enter in dust-collecting bucket 40, i.e., water is purified.Because cylinder 30 is by the upper end closed of dust-collecting bucket 40, separating During cylinder 30 moves down relative to dust-collecting bucket 40, the pressure made in dust-collecting bucket 40 is increased, so as to by dust-collecting bucket 40 Water extruded from drainpipe 42, water is again returned in purification tank 10.After water in settling box 12 enters disengagement chamber so that purification Water in groove 10 flows downward, then the water of the bottom of purification tank 10 enters in settling box 12, is precipitated, and top is relatively limpid Water is stayed in purification tank 10, so as to reduce the impurity of the water in purification tank 10.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art Several modifications and improvements are made, these should also be considered as protection scope of the present invention, and these are implemented all without the influence present invention Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification The records such as embodiment can be used for the content for explaining claim.

Claims (5)

1. a kind of waste gas dust-removal device, including frame, the purification tank being fixed in frame and the flue gas leading stretched into purification tank, its It is characterised by, the lower section of the purification tank is provided with settling box, and the floor space of purification tank is more than the floor space of settling box;The precipitation The middle part of bucket is provided with the cylinder for being sheathed on settling box periphery, and cylinder is rotatablely connected with settling box and cylinder can be relative to heavy Shallow lake bucket is slided up and down, and guide ring is connected with by unilateral bearing on cylinder, and the precipitation drum outer wall is provided with spiral guide slot, The guide pad coordinated with spiral guide slot is fixed with the guide ring;Outer wall of the top and bottom of cylinder with settling box Fitting, forms disengagement chamber, the bottom of cylinder is provided with valve, and valve includes valve between the middle part of cylinder and the outer wall of settling box Seat and valve element and back-moving spring in valve seat, valve element can radially sliding along cylinder, valve element is by valve during centrifugal force Open;The settling box is provided with the leaking hole that can be connected with disengagement chamber, and cylinder can be by leaking hole along settling box slide downward Closure;The dust-collecting bucket being fixed in frame is additionally provided with below the purification tank, the settling box and cylinder, which are respectively positioned on, to catchment In bucket, and dust-collecting bucket upper end closed, cylinder are connected by cylinder by click with dust-collecting bucket, the bottom connection of dust-collecting bucket There is drainpipe, the free end of drainpipe extends to the top of purification tank;The frame is provided with what driving cylinder slided up and down Drive mechanism.
2. waste gas dust-removal device according to claim 1, it is characterised in that:The purification tank and settling box pass through in back taper The guide shell connection of shape.
3. waste gas dust-removal device according to claim 2, it is characterised in that:The inwall of the cylinder is provided with detachable Porous adsorption layer.
4. waste gas dust-removal device according to claim 3, it is characterised in that:The edge of the purification tank is provided with excessive groove, The upper end of excessive groove is higher than the upper end of purification tank, and the free end of the drainpipe is located at the surface of excessive groove.
5. waste gas dust-removal device according to claim 4, it is characterised in that:The top and bottom of the cylinder and precipitation Sealing ring is equipped between the outer wall of bucket.
CN201711186161.4A 2017-11-23 2017-11-23 A kind of waste gas dust-removal device Active CN107694241B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108939629A (en) * 2018-09-30 2018-12-07 重庆江北机械有限责任公司 A kind of shuttle valve discharging tubular type solid-liquid separating machine
CN110523187A (en) * 2019-08-22 2019-12-03 郭喜 A kind of multi-stag fume gases processing unit
CN112917156A (en) * 2021-01-21 2021-06-08 郑州铁路职业技术学院 Electromechanical automatic tapping machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH519351A (en) * 1968-06-17 1972-02-29 Miura Mitsugi Removal of impurities from a gas
CN105056666A (en) * 2015-07-28 2015-11-18 鞍钢实业微细铝粉有限公司 Flammable powder dust collector and dust removal method
CN205517016U (en) * 2016-04-07 2016-08-31 邵阳学院 Portable resistance furnace exhaust apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH519351A (en) * 1968-06-17 1972-02-29 Miura Mitsugi Removal of impurities from a gas
CN105056666A (en) * 2015-07-28 2015-11-18 鞍钢实业微细铝粉有限公司 Flammable powder dust collector and dust removal method
CN205517016U (en) * 2016-04-07 2016-08-31 邵阳学院 Portable resistance furnace exhaust apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108939629A (en) * 2018-09-30 2018-12-07 重庆江北机械有限责任公司 A kind of shuttle valve discharging tubular type solid-liquid separating machine
CN110523187A (en) * 2019-08-22 2019-12-03 郭喜 A kind of multi-stag fume gases processing unit
CN112917156A (en) * 2021-01-21 2021-06-08 郑州铁路职业技术学院 Electromechanical automatic tapping machine

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Effective date of registration: 20240129

Address after: 411100, No. 169 Fuxing Middle Road, Baota Street, Yuetang District, Xiangtan City, Hunan Province, China, No. 0101014 Fuxing International Financial Center Commercial Street

Patentee after: Xiangtan Changyang Environmental Protection Technology Co.,Ltd.

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Address before: Room 333, No. 159 Hongdu Road, Jiangbei District, Ningbo City, Zhejiang Province, 315000

Patentee before: NINGBO JIANGBEI QINGWEI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.

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