CN208049694U - A kind of Aluminum smelting furnace smoke discharging device - Google Patents
A kind of Aluminum smelting furnace smoke discharging device Download PDFInfo
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- CN208049694U CN208049694U CN201721913689.2U CN201721913689U CN208049694U CN 208049694 U CN208049694 U CN 208049694U CN 201721913689 U CN201721913689 U CN 201721913689U CN 208049694 U CN208049694 U CN 208049694U
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- fixedly connected
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- reaction tank
- support shaft
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a kind of Aluminum smelting furnace smoke discharging devices, including pedestal, the base top side is rotatably connected to support shaft by turning part, support shaft outer wall side lower end is fixedly connected with drive rod, the drive rod is provided with transfer far from support shaft one end, it is rotatably connected to mounting base at the top of the support shaft, convulsions hose is fixedly connected with by retainer plate at the top of the mounting base, described convulsions hose one end is fixedly connected with the first exhaust column, the first exhausting inside pipe wall both sides lower end slidably connects filter mantle, first exhaust column is bolted to connection with filter mantle, it is provided with installation casing on the downside of the filter mantle, the utility model is related to Aluminum processing technique fields.The flue solved in existing smoke discharging device is not easy to maintenance of clean-up, is easy obstruction pipeline, and the flue gas given off can take away metal, wastes raw metal, direct emission pernicious gas, the problems such as polluting environment.
Description
Technical field
The utility model is related to Aluminum processing technique field, specially a kind of Aluminum smelting furnace smoke discharging device.
Background technology
Aluminium processing industry has gone through the development of decades, by producing various aluminium to aluminum metal
Alloy needs to carry out smelting in smelting furnace in aluminium alloy production synthesis, and existing smelting furnace is to use pyrogenic process mostly
Melting, aluminium and other metals will produce a certain amount of toxic and harmful gas in fusion process, these toxic and harmful gas are general
It is all emitted by smoke discharging device, but the flue in existing smoke discharging device takes fixed mode, with
Smelting furnace fix mostly it is irremovable, or dismantle relatively difficult, inconvenient maintenance of clean-up, in these poisonous and harmful gas
Containing a certain amount of metal and impurity in body, these metal discharges out can not only waste raw metal, can also block pipeline, and
And directly discharge these toxic and harmful gas in air, it also pollutes the environment, forms haze, it is strong to the body of surrounding population
Health damages, and does not also meet energy-saving and environment-friendly theory.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of Aluminum smelting furnace smoke discharging device, solves
Flue in existing smoke discharging device is not easy to maintenance of clean-up, is easy obstruction pipeline, and the flue gas given off can be taken away
The problems such as metal, waste raw metal, direct emission pernicious gas, pollution environment.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs：A kind of Aluminum smelting furnace cigarette
Gas tapping equipment, including pedestal, the base top side are rotatably connected to support shaft, the support shaft outer wall one by turning part
Side lower end is fixedly connected with drive rod, and the drive rod is provided with transfer, the support shaft top far from support shaft one end
It is rotatably connected to mounting base, the mounting base top is fixedly connected with convulsions hose, described convulsions hose one end by retainer plate
It is fixedly connected with the first exhaust column, the first exhausting inside pipe wall both sides lower end slidably connects filter mantle, first exhausting
Pipe is bolted to connection with filter mantle, and installation casing, the installation sleeve outer wall side are provided on the downside of the filter mantle
It is fixedly connected with movable part, the one end of the movable part far from installation casing is slidably connected with support shaft, the mounting base outer wall
Front side is fixedly connected with folding and unfolding cylinder, and the folding and unfolding cylinder output end is fixedly connected with folding and unfolding bar, and the folding and unfolding bar is far from folding and unfolding
One end of cylinder is fixedly connected with movable part, and the folding and unfolding bar outer wall surface is arranged with spring, and the convulsions hose is far from installation
One end of casing is fixedly connected with the second exhaust column, and the convulsions hose and convulsions hose junction are provided with protection pipe sleeve, institute
It states protection pipe sleeve outer wall surface and is arranged with protection spring, side of the base top far from support shaft is fixedly connected with reaction
Pond, the described one end of second exhaust column far from convulsions hose run through reaction tank and extend to the inside of reaction tank, the reaction tank
Side be provided with stirring motor, one end of the stirring motor output shaft is fixedly connected with agitating shaft, and the agitating shaft is separate
One end of stirring motor through reaction tank and extending to inside reaction tank, the agitating shaft extend to one end inside reaction tank with
Reaction tank is rotatablely connected, and the agitating shaft outer wall surface is fixedly connected with stirrer gear, and the row of being communicated with is fixed at the top of the reaction tank
Tracheae, the exhaust tube wall side, which is fixed by the bracket, is connected with harmful gas detecting device, the pernicious gas detection dress
Setting in right over exhaust pipe, exhaust tube wall side lower end is provided with warning lamp, the warning lamp input terminal with it is harmful
Gas-detecting device connects.
Preferably, the transfer includes turning to cylinder, and the steering cylinder output end is fixedly connected with adjustable shelf, institute
Adjustable shelf is stated far from finite place piece, the steering cylinder and the locating part bottom of being slidably connected at the top and bottom of the one end for turning to cylinder
It is fixedly connected with pedestal, the adjustable shelf offers loose slot, the loose slot inner wall top far from the side for turning to cylinder
It is rotatablely connected with bottom and drive rod, the locating part is internally provided with limit spring, described limit spring one end and locating part
It is fixedly connected, the limit spring other end is fixedly connected by movable plate with adjustable shelf.
Preferably, the filter mantle includes the first filter screen, and the first filtering sieve bottom is fixedly connected with the second filtering
Net, first filter screen and the second filter screen outer wall surface are slidably connected with the first exhaust column, second filter screen bottom
Portion is fixedly connected with threaded sleeve, and the threaded sleeve outer wall surface is connected through a screw thread with installation casing, the threaded sleeve
Outer wall both sides upper end has been fixedly connected with mounting bracket, and mounting bracket outer wall both sides upper end is bolted with the first exhaust column
Connection.
Preferably, the first exhausting pipe outer wall is rotatably connected to connecting rod, the connection close to support shaft side upper end
The one end of bar far from the first exhaust column is rotatablely connected with mounting base, and buffer spring is provided between the connecting rod and mounting base.
Preferably, both sides are fixedly connected with filter screen at the top of the reaction tank inner wall.
Preferably, reaction tank outer wall side lower end is fixedly connected with drain pipe.
(3) advantageous effect
The utility model provides a kind of Aluminum smelting furnace smoke discharging device.Has following advantageous effect：
(1), Aluminum smelting furnace smoke discharging device, by being rotatably connected to branch by turning part in base top side
Axis is supportted, support shaft outer wall side lower end is fixedly connected with drive rod, and drive rod is provided with transfer far from support shaft one end, branch
Mounting base is rotatably connected at the top of support axis, mounting base top is fixedly connected with convulsions hose, convulsions hose one end by retainer plate
It is fixedly connected with the first exhaust column, the first exhausting inside pipe wall both sides lower end slidably connects filter mantle, the first exhaust column and filtering
Cover is bolted to connection, and installation casing is provided on the downside of filter mantle, and installation sleeve outer wall side is fixedly connected with movable part,
The one end of movable part far from installation casing is slidably connected with support shaft, and folding and unfolding cylinder is fixedly connected on front side of mounting base outer wall, receives
Deflation cylinder output end is fixedly connected with folding and unfolding bar, and the one end of folding and unfolding bar far from folding and unfolding cylinder is fixedly connected with movable part, folding and unfolding bar
Outer wall surface is arranged with spring, and the one end of convulsions hose far from installation casing is fixedly connected with the second exhaust column, convulsions hose and
Convulsions hose junction is provided with protection pipe sleeve, and protection pipe sleeve outer wall surface is arranged with protection spring, solves existing flue gas row
The flue put in device is not easy to maintenance of clean-up, the problem of being easy to block pipeline so that the scale removal process of flue becomes
Must be very easy, it is convenient for maintenance and cleaning, has filtered the impurity in flue gas, prevented pipeline to be blocked obstructed, ensure that flue
Exhaust efficiency extends the service life of flue so that smelting furnace keeps good smoke evacuation performance.
(2), Aluminum smelting furnace smoke discharging device, by being fixedly connected in side of the base top far from support shaft
There are reaction tank, the one end of the second exhaust column far from convulsions hose to run through reaction tank and extend to the inside of reaction tank, reaction tank
Side is provided with stirring motor, and one end of stirring motor output shaft is fixedly connected with agitating shaft, and agitating shaft is far from stirring motor
One end is through reaction tank and extends to inside reaction tank, and agitating shaft extends to one end inside reaction tank and connects with reaction tank rotation
It connects, agitating shaft outer wall surface is fixedly connected with stirrer gear, is fixed at the top of reaction tank and is communicated with exhaust pipe, exhaust tube wall side is logical
It crosses holder and is fixedly connected with harmful gas detecting device, harmful gas detecting device is located at right over exhaust pipe, exhaust tube wall
Side lower end is provided with warning lamp, and warning lamp input terminal is connect with harmful gas detecting device, solves existing flue gas emission dress
Metal can be taken away by setting the flue gas given off, waste raw metal, direct emission pernicious gas, the problem of polluting environment, will be harmful to
Gas is handled, and the waste of metal material is effectively avoided, and convenient for recycling metal, and is examined to the gas after processed
It is being discharged after survey, ensure that the safety of gas discharge, responded the call of environmental protection, met energy-saving and environment-friendly theory.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model transfer right side structural representation；
Fig. 3 is the utility model filter mantle main structure diagram.
In figure：1 pedestal, 2 support shafts, 3 drive rods, 4 transfers, 41 turn to cylinder, 42 adjustable shelfs, 43 locating parts, 44
Loose slot, 45 movable plates, 46 limit springs, 5 movable parts, 6 mounting bases, 7 installation casings, 8 first exhaust columns, 9 filter mantles, 91 the
One filter screen, 92 second filter screens, 93 threaded sleeves, 94 mounting brackets, 10 folding and unfolding cylinders, 11 folding and unfolding bars, 12 convulsions hoses, 13
Two exhaust columns, 14 protection pipe sleeves, 15 protection springs, 16 reaction tanks, 17 stirring motors, 18 agitating shafts, 19 exhaust pipes, 20 harmful gas
Body detection device, 21 warning lamps.
Specific implementation mode
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
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of Aluminum smelting furnace flue gas processing device,
Including pedestal 1,1 top side of pedestal is rotatably connected to support shaft 2 by turning part, and 2 outer wall side lower end of support shaft is fixedly connected
There are drive rod 3, drive rod 3 that 2 one end of support shaft is provided with transfer 4,2 top of support shaft is rotatably connected to mounting base 6,
6 top of mounting base is fixedly connected with convulsions hose 12 by retainer plate, and 12 one end of convulsions hose is fixedly connected with the first exhaust column
8,8 inner wall both sides lower end of the first exhaust column slidably connects filter mantle 9, the first exhaust column 8 and 9 company of being bolted of filter mantle
It connects, 9 downside of filter mantle is provided with installation casing 7, and 7 outer wall side of installation casing is fixedly connected with movable part 5, and movable part 5 is separate
One end of installation casing 7 is slidably connected with support shaft 2, and folding and unfolding cylinder 10, folding and unfolding cylinder are fixedly connected on front side of 6 outer wall of mounting base
10 output ends are fixedly connected with folding and unfolding bar 11, and the one end of folding and unfolding bar 11 far from folding and unfolding cylinder 10 is fixedly connected with movable part 5, folding and unfolding
11 outer wall surface of bar is arranged with spring, and the one end of convulsions hose 12 far from installation casing 7 is fixedly connected with the second exhaust column 13, takes out
Wind hose 12 and 12 junction of convulsions hose are provided with protection pipe sleeve 14, and protection 14 outer wall surface of pipe sleeve is arranged with protection spring
15, the flue solved in existing smoke discharging device is not easy to maintenance of clean-up, the problem of being easy to block pipeline so that cigarette
The scale removal process of feed channel becomes very easy, is convenient for maintenance and cleaning, has filtered the impurity in flue gas, pipeline is prevented to be blocked not
It is logical, it ensure that flue exhaust efficiency, extend the service life of flue so that smelting furnace keeps good smoke evacuation
Energy.1 side of the top far from support shaft 2 of pedestal is fixedly connected with reaction tank 16, and the second exhaust column 13 is far from convulsions hose 12
One end runs through reaction tank 16 and extends to the inside of reaction tank 16, and the side of reaction tank 16 is provided with stirring motor 17, stirring electricity
One end of 17 output shaft of machine is fixedly connected with agitating shaft 18, the one end of agitating shaft 18 far from stirring motor 17 through reaction tank 16 and
It extends to inside reaction tank 16, agitating shaft 18 extends to one end inside reaction tank 16 and is rotatablely connected with reaction tank 16, agitating shaft
18 outer wall surfaces are fixedly connected with stirrer gear, and 16 top fixation of reaction tank is communicated with exhaust pipe, and 19 outer wall side of exhaust pipe passes through
Holder is fixedly connected with harmful gas detecting device 20, and harmful gas detecting device 20 is located at right over exhaust pipe, outside exhaust pipe
Wall side lower end is provided with warning lamp 21, and 21 input terminal of warning lamp is connect with harmful gas detecting device 20, solves existing cigarette
The flue gas that gas tapping equipment gives off can take away metal, waste raw metal, and direct emission pernicious gas pollutes asking for environment
Topic, pernicious gas is handled, the waste of metal material is effectively avoided, convenient for recycling metal, and to after processed
Gas is discharging after being detected, and ensure that the safety of gas discharge, has responded the call of environmental protection, met energy conservation and environmental protection
Theory.
Transfer 4 includes turning to cylinder 41, turns to 41 output end of cylinder and is fixedly connected with adjustable shelf 42, adjustable shelf 42 is remote
From being slidably connected finite place piece 43 at the top and bottom of the one end for turning to cylinder 41, cylinder 41 and 43 bottom of locating part are turned to and bottom
Seat 1 is fixedly connected, and adjustable shelf 42 offers loose slot 44,44 inner wall of loose slot top and bottom far from the side for turning to cylinder 41
It is rotatablely connected with drive rod 3, locating part 43 is internally provided with limit spring 46, and 46 one end of limit spring is fixed with locating part 43 to be connected
It connects, 46 other end of limit spring is fixedly connected by movable plate 45 with adjustable shelf 42, convenient for repairing cleaning to device.
Filter mantle 9 includes the first filter screen 91, and 91 bottom of the first filter screen is fixedly connected with the second filter screen 92, the first mistake
Strainer 91 and 92 outer wall surface of the second filter screen are slidably connected with the first exhaust column 8, and 92 bottom of the second filter screen is fixedly connected
There are threaded sleeve 93,93 outer wall surface of threaded sleeve to be connected through a screw thread with installation casing 7,93 outer wall both sides upper end of threaded sleeve
It is fixedly connected with mounting bracket 94,94 outer wall both sides upper end of mounting bracket is bolted to connection with the first exhaust column 8, prevents from filling
It sets and is blocked.
First exhaust column, 8 outer wall is rotatably connected to connecting rod close to 2 side upper end of support shaft, and connecting rod is far from the first exhausting
One end of pipe 8 is rotatablely connected with mounting base 6, is provided with buffer spring between connecting rod and mounting base 6, is improved the stabilization of device
Property.
Both sides are fixedly connected with filter screen at the top of 16 inner wall of reaction tank, are convenient to clean reaction tank 16.
16 outer wall side lower end of reaction tank is fixedly connected with drain pipe, convenient for discharge reactant.
When work, the smoke outlet of device and smelting furnace is fixed by installing casing 7, the flue gas in smelting furnace is successively
It is discharged into reaction tank 16 into the first exhaust column 8, convulsions hose 12 and the second exhaust column 13, and by mistake at the first exhaust column 8
Filter bowl 9 filters out solid impurity, and filtered flue gas is reacted with the substance in reaction tank 16, removes harmful substance and wherein
After the metal contained, it is discharged by exhaust pipe 19, whether the gas of the detection discharge of harmful gas detecting device 20 meets regulation, if
The gas of discharge is still containing toxic, then warning lamp 21 can warn, and when needing to clear up device, folding and unfolding cylinder 10 is by first
Exhaust column 8 lifts, and controls the first exhaust column 8 by transfer 4 and turn to, and the dismounting of filter mantle 9 is carried out replacement cleaning.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " including one ... the element limited, it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of Aluminum smelting furnace smoke discharging device, including pedestal (1), it is characterised in that：Pedestal (1) top side
It is rotatably connected to support shaft (2) by turning part, support shaft (2) the outer wall side lower end is fixedly connected with drive rod (3), described
Drive rod (3) is provided with transfer (4) far from support shaft (2) one end, and mounting base is rotatably connected at the top of the support shaft (2)
(6), convulsions hose (12) is fixedly connected with by retainer plate at the top of the mounting base (6), described convulsions hose (12) one end is solid
Surely it is connected with the first exhaust column (8), the first exhaust column (8) inner wall both sides lower end slidably connects filter mantle (9), and described
One exhaust column (8) is bolted to connection with filter mantle (9), and installation casing (7), institute are provided on the downside of the filter mantle (9)
State installation casing (7) outer wall side and be fixedly connected with movable part (5), the one end of the movable part (5) far from installation casing (7) with
Support shaft (2) is slidably connected, and folding and unfolding cylinder (10), the folding and unfolding cylinder are fixedly connected on front side of mounting base (6) outer wall
(10) output end is fixedly connected with folding and unfolding bar (11), the folding and unfolding bar (11) one end and movable part far from folding and unfolding cylinder (10)
(5) it is fixedly connected, folding and unfolding bar (11) outer wall surface is arranged with spring, and the convulsions hose (12) is far from installation casing (7)
One end be fixedly connected with the second exhaust column (13), the convulsions hose (12) and convulsions hose (12) junction are provided with protection
Pipe sleeve (14), protection pipe sleeve (14) outer wall surface are arranged with protection spring (15), and pedestal (1) top is far from support shaft
(2) side is fixedly connected with reaction tank (16), and the one end of second exhaust column (13) far from convulsions hose (12) is through anti-
The side of Ying Chi (16) and the inside for extending to reaction tank (16), the reaction tank (16) is provided with stirring motor (17), described
One end of stirring motor (17) output shaft is fixedly connected with agitating shaft (18), the separate stirring motor (17) of the agitating shaft (18)
One end is through reaction tank (16) and extends to reaction tank (16) inside, and the agitating shaft (18) extends to reaction tank (16) inside
One end is rotatablely connected with reaction tank (16), and agitating shaft (18) outer wall surface is fixedly connected with stirrer gear, the reaction tank
(16) top fixation is communicated with exhaust pipe (19), and exhaust pipe (19) the outer wall side, which is fixed by the bracket, is connected with pernicious gas
Detection device (20), the harmful gas detecting device (20) are located at right over exhaust pipe (19), exhaust pipe (19) outer wall
Side lower end is provided with warning lamp (21), and warning lamp (21) input terminal is connect with harmful gas detecting device (20).
2. a kind of Aluminum smelting furnace smoke discharging device according to claim 1, it is characterised in that：The transfer
(4) include turning to cylinder (41), steering cylinder (41) output end is fixedly connected with adjustable shelf (42), the adjustable shelf (42)
Far from finite place piece (43), the steering cylinder (41) and the locating part of being slidably connected at the top and bottom of the one end for turning to cylinder (41)
(43) bottom is fixedly connected with pedestal (1), and the adjustable shelf (42) offers loose slot far from the side for turning to cylinder (41)
(44), it is rotatablely connected with drive rod (3) at the top and bottom of loose slot (44) inner wall, the locating part (43) is internally provided with
Limit spring (46), described limit spring (46) one end are fixedly connected with locating part (43), limit spring (46) other end
It is fixedly connected with adjustable shelf (42) by movable plate (45).
3. a kind of Aluminum smelting furnace smoke discharging device according to claim 1, it is characterised in that：The filter mantle
(9) include the first filter screen (91), the first filter screen (91) bottom is fixedly connected with the second filter screen (92), and described first
Filter screen (91) and the second filter screen (92) outer wall surface are slidably connected with the first exhaust column (8), second filter screen
(92) bottom is fixedly connected with threaded sleeve (93), and threaded sleeve (93) outer wall surface passes through screw thread with installation casing (7)
Connection, threaded sleeve (93) the outer wall both sides upper end has been fixedly connected with mounting bracket (94), mounting bracket (94) outer wall two
Side upper end is bolted to connection with the first exhaust column (8).
4. a kind of Aluminum smelting furnace smoke discharging device according to claim 1, it is characterised in that：First exhausting
Pipe (8) outer wall is rotatably connected to connecting rod close to support shaft (2) side upper end, and the connecting rod is far from the first exhaust column (8)
One end is rotatablely connected with mounting base (6), and buffer spring is provided between the connecting rod and mounting base (6).
5. a kind of Aluminum smelting furnace smoke discharging device according to claim 1, it is characterised in that：The reaction tank
(16) both sides are fixedly connected with filter screen at the top of inner wall.
6. a kind of Aluminum smelting furnace smoke discharging device according to claim 1, it is characterised in that：The reaction tank
(16) outer wall side lower end is fixedly connected with drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721913689.2U CN208049694U (en) | 2017-12-31 | 2017-12-31 | A kind of Aluminum smelting furnace smoke discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721913689.2U CN208049694U (en) | 2017-12-31 | 2017-12-31 | A kind of Aluminum smelting furnace smoke discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208049694U true CN208049694U (en) | 2018-11-06 |
Family
ID=63994704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721913689.2U Expired - Fee Related CN208049694U (en) | 2017-12-31 | 2017-12-31 | A kind of Aluminum smelting furnace smoke discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208049694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945651A (en) * | 2019-05-06 | 2019-06-28 | 佛山市南海区辉泰科技机械有限公司 | A kind of intelligent smelting furnace |
| CN111888852A (en) * | 2020-08-13 | 2020-11-06 | 郭斌 | High-efficiency powder metallurgy dust removal device |
-
2017
- 2017-12-31 CN CN201721913689.2U patent/CN208049694U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945651A (en) * | 2019-05-06 | 2019-06-28 | 佛山市南海区辉泰科技机械有限公司 | A kind of intelligent smelting furnace |
| CN111888852A (en) * | 2020-08-13 | 2020-11-06 | 郭斌 | High-efficiency powder metallurgy dust removal device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 Termination date: 20191231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |