CN207914302U - A kind of induced-draft fan of casting - Google Patents
A kind of induced-draft fan of casting Download PDFInfo
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- CN207914302U CN207914302U CN201721924128.2U CN201721924128U CN207914302U CN 207914302 U CN207914302 U CN 207914302U CN 201721924128 U CN201721924128 U CN 201721924128U CN 207914302 U CN207914302 U CN 207914302U
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- push rod
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- feeding belt
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Abstract
The utility model provides a kind of induced-draft fan of casting, belongs to metal smelting technical field.It solves the problems, such as big using digital control system cost in existing casting smoke exhaust process.This induced-draft fan includes smoke machine ontology, there is smoke evacuation room in smoke machine ontology, smoke evacuation is indoor to be equipped with feeding belt, the outlet flue being connected to smoke evacuation room is offered on smoke machine ontology, the both sides of smoke evacuation room, which are equipped with, enters the room mouth and goes out room mouthful, casting mold is sent into after smoke evacuation interior carries out smoke evacuation effect via mouth of entering the room and is sent out again by going out room mouthful, go out at room mouthful to be equipped with a gear door, keep off the interval door opening action of Men Yi interval switching mechanism execution cycle property, the both ends tensioning of feeding belt is arranged on two tensioning wheels, and feeding belt is acted by the interval feeding of an interval stepping mechanism execution cycle property.Compared with prior art, the feedstock transportation process of this induced-draft fan, which uses, uses unique novel intermittent driving mechanism, and driving motor moment unlatching in whole work process need not use the numerical-control motor of interval start and stop.
Description
Technical field
The utility model belongs to metal smelting technical field, is related to a kind of induced-draft fan of casting.
Background technology
Casting is the metal forming object obtained by casting method, i.e., the liquid metal smelted, with cast, pressure
Penetrate, suck or other casting methods inject in preprepared casting mold, it is cooling after after the following process means such as polishing, gained
That arrives has definite shape, the object of size and performance.Casting will produce a large amount of in being cast to casting mold and after completing cooling
Flue dust, these flue dust are exhausted directly in air that air can be polluted, and smoke evacuation process together can be arranged on castings production line thus.Row
Cigarette process needs the smoke evacuation that casting is sent into a sealing by a belt pulley indoor, will be cast in suitable local opened smoke-discharging mouth
Then flue dust discharge around part is again sent out casting from smoke evacuation room, since smoke evacuation needs certain sequential, so driving belt pulley
The driving mechanism of gradual stepping is driven to need the start-stop that is spaced, belt slipping when unlatching, belt pulley is motionless when stopping and discharges fume
Mouth, which is opened, allows flue gas to have time enough to be discharged.In the prior art, these driving mechanism generally uses for needing to be spaced start and stop
Digital control system is completed, and is introduced digital control system in whole equipment and needed to consume a large amount of equipment cost.
Utility model content
The purpose of this utility model is controlled between tool using digital control system in existing casting smoke exhaust process
Every stepping, digital control system is in input, maintenance and does not have the problem of higher economy on the service life, and a kind of casting proposed
Induced-draft fan.
The purpose of this utility model can be realized by following technical proposal：
A kind of induced-draft fan of casting, which is characterized in that it includes smoke machine ontology, has smoke evacuation room, smoke evacuation in smoke machine ontology
Interior is equipped with feeding belt, offers outlet flue be connected to smoke evacuation room on smoke machine ontology, the both sides of room of discharging fume equipped with enter the room mouth with
Go out room mouthful, casting mold passes through the transport of feeding belt, is sent into after smoke evacuation interior carries out smoke evacuation effect via mouth of entering the room and is sent again by going out room mouthful
Go out, goes out room mouthful place and be equipped with a gear door, the interval door opening action of gear Men Yi interval switching mechanism execution cycle property, the two of feeding belt
End tensioning is arranged on two tensioning wheels, and feeding belt is acted by the interval feeding of an interval stepping mechanism execution cycle property, institute
The feeding tep reel stated is additionally provided with a spare tape, and spare tape is acted by the interval feeding of an interval feed mechanism execution cycle property.
The interval stepping mechanism includes gag lever post, sliding shoe, sliding driving motor, sliding crank, slide link, turns over
Turn push rod and block, the inner band wall of above-mentioned feeding belt is first-class to be equipped at intervals with several outer bars, and gag lever post is installed in smoke machine sheet
On body and its axis is parallel with the feed direction of feeding belt, and sliding shoe is slidably arranged on gag lever post, and sliding driving motor is fixed
On smoke machine ontology, the motor shaft ends for sliding driving motor are connected to one end of sliding crank, slide the other end of crank with
One end of slide link is rotatablely connected, and the other end and the sliding shoe of slide link are rotatablely connected, and the period with sliding crank turns
Dynamic, sliding shoe can slidably reciprocate on gag lever post, and the overturning push rod is rotatably arranged on sliding shoe, and block is installed in sliding
On block and by overturning push rod, overturns and be additionally provided with a torsional spring at the rotation connection of push rod and sliding shoe, which makes overturning push away
Bar is higher than the bottom of outer bar when not by external force with the trend turned over to block, top of overturning push rod when not by external force,
When overturn push rod touch after the bar of outer and outer bar give the active force of overturning push rod with its overturn trend direction it is identical when, turn over
Turning push rod drives at this outer bar to move, and after overturning push rod and touching outer bar and gives the active force of overturning push rod and is turned over it
Transfer toward gesture direction it is opposite when, overturning push rod to its overturn trend negative direction overturning, until overturning push rod skim over the outer bar after,
Push rod is overturn under the action of torsional spring will revert to the position contacted with block.
The interval feed mechanism includes locating rod, movable block, mobile driving motor, mobile crank, mobile connecting rod, rotation
Turn push rod and ratchet mechanism, the inner band wall of above-mentioned feeding belt is first-class to be equipped at intervals with several extension rods, and locating rod is installed in cigarette
On machine ontology and its axis is parallel with the feed direction of feeding belt, and movable block is slidably arranged in locating rod, mobile driving motor
It is installed on smoke machine ontology, the motor shaft ends for moving driving motor are connected to one end of mobile crank, move the another of crank
End and one end of mobile connecting rod are rotatablely connected, and the other end and the movable block of mobile connecting rod are rotatablely connected, with the week of mobile crank
Phase rotates, and movable block can slidably reciprocate on gag lever post, and the rotating push rod has several, and even circumferential is distributed in a rotation
On block, spill spin block is connect by ratchet mechanism with movable block, and ratchet mechanism includes ratchet, internal tooth and the rotating push rod number of the ratchet
Manage identical, the top of the rotating push rod in the top is higher than the bottom of extension rod, and the top rotating push rod is adjacent at this time
The top of another rotating push rod be less than the bottom of extension rod, after rotating push rod forward direction is mobile and touches extension rod, ratchet
It can not reverse, rotating push rod is made to push the extension rod stepping, after rotating push rod moves backward and touches extension rod, ratchet is just
Turn, which turns to skim over the extension rod from the outer force effect backspin of extension rod, and is pushed away with another adjacent before rotation
Bar is rolled over vertical position and in running order, and ratchet rotate forward after its pawl squeeze into adjacent internal tooth.
The interval switching mechanism includes linkage board, switch drive motor and cam bit, the linkage board with it is above-mentioned
It keeps off door to be connected, switch drive motor is connected with smoke machine ontology, and cam bit is connected on the motor shaft of switch drive motor, linkage board
It is arranged above cam bit and is held by cam bit.
Compared with prior art, the feedstock transportation process of this induced-draft fan is used using unique novel intermittent driving machine
Structure, in whole work process the driving motor moment open, the numerical-control motor of interval start and stop need not be used.
Description of the drawings
Fig. 1 is the structural schematic diagram of induced-draft fan.
Fig. 2 is the two states figure for being spaced stepping mechanism and feeding belt interaction relation.
Fig. 3 is the two states figure for being spaced feed mechanism and spare tape interaction relation.
Fig. 4 is the structural schematic diagram for being spaced switching mechanism.
In figure, 1, smoke machine ontology；2, smoke evacuation room；3, feeding belt；4, door is kept off；5, tensioning wheel；6, spare tape；7, gag lever post；
8, sliding shoe；9, driving motor is slided；10, crank is slided；11, slide link；12, push rod is overturn；13, block；14, outer
Bar；15, torsional spring；16, locating rod；17, movable block；18, mobile driving motor；19, mobile crank；20, mobile connecting rod；21, it revolves
Turn push rod；22, extension rod；23, spill spin block；24, linkage board；25, cam bit.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, the induced-draft fan of this casting includes smoke machine ontology 1, there is smoke evacuation room 2 in smoke machine ontology 1, room 2 of discharging fume
It is interior to be equipped with feeding belt 3, the outlet flue being connected to smoke evacuation room 2 is offered on smoke machine ontology 1, the both sides of smoke evacuation room 2 are equipped with mouth of entering the room
With go out room mouthful, casting mold passes through the transport of feeding belt 3, is sent into smoke evacuation room 2 via mouth of entering the room after carrying out smoke evacuation effect again by going out room
Mouth is sent out, and goes out at room mouthful to be equipped with a gear door 4, keeps off door 4 in the interval door opening action of an interval switching mechanism execution cycle property, feeding
It is arranged on two tensioning wheels 5 with the tensioning of 3 both ends, feeding belt 3 is sent by the interval of an interval stepping mechanism execution cycle property
Material acts, and 3 disk of feeding belt is additionally provided with a spare tape 6, and spare tape 6 passes through between an interval feed mechanism execution cycle property
It is acted every feeding.
As the tool for driving casting mold raw material to be conveyed in the utility model, it needs to carry out intermittent cunning feeding belt 3
It is dynamic just to make the also compartment of terrain advance of casting mold raw material, it is in order to which the casting mold raw material after smoke evacuation will be completed from smoke evacuation room 2 during advancing
Interior submitting, keeping off door 4 at this time should open, and when the stopping of feeding belt 3, gear door 4 is also accordingly turned off to prevent flue dust from being dissipated from room mouthful is gone out
Go out, being now in the casting mold raw material immediately below outlet flue, there is the sufficient time flue gas on its surface to be discharged from outlet flue.This
The problem that focuses on solving of utility model is to be --- how to make the feeding of the progress of feeding belt 3 intermittent at this.If using
Motor is controlled, by controlling motor constantly start and stop, the intermittent that can complete feeding belt 3 really is fed, but entire machine institute
Need input cost very big, if can realize that the stepping of feeding belt 3 will have by a common motor change
Great meaning, and the utility model is to use a common motor, and by the driven Design of some labyrinths,
The operation of interval feeding is completed, the component specifically used and connection relation mode are as follows：
As shown in Fig. 2, interval stepping mechanism includes gag lever post 7, sliding shoe 8, sliding driving motor 9, sliding crank 10, slides
Dynamic connecting rod 11, overturning push rod 12 and block 13, the inner band wall of above-mentioned feeding belt 3 is first-class to be equipped at intervals with several outer bars 14,
Gag lever post 7 is installed on smoke machine ontology 1 and its axis is parallel with the feed direction of feeding belt 3, and sliding shoe 8 is slidably arranged in limit
On bar 7, sliding driving motor 9 is installed on smoke machine ontology 1, and the motor shaft ends of sliding driving motor 9 are connected to sliding crank
One end of 10 one end, the other end and slide link 11 that slide crank 10 is rotatablely connected, the other end and cunning of slide link 11
Motion block 8 is rotatablely connected, and as the period of sliding crank 10 rotates, sliding shoe 8 can slidably reciprocate on gag lever post 7, and described turns over
Turn push rod 12 to be rotatably arranged on sliding shoe 8, block 13 is installed on sliding shoe 8 and by overturning push rod 12, overturns push rod
12 be additionally provided with a torsional spring 15 at the rotation connection of sliding shoe 8, which makes overturning push rod 12 when not by external force have to turn over
To the trend of block 13, top of the overturning push rod 12 when not by external force is higher than the bottom of outer bar 14, when overturning push rod 12 connects
Contact after outer bar 14 and outer bar 14 give the active force of overturning push rod 12 with its overturn trend direction it is identical when, overturning push rod
12 drive this at outer bar 14 move, when overturn push rod 12 touch outer bar 14 after and give overturning push rod 12 active force with
When its overturning trend direction is opposite, overturning push rod 12 overturns the negative direction overturning of trend to it, until overturning push rod 12 skims over this
After outer bar 14, overturning push rod 12 will revert to the position contacted with block 13 under the action of torsional spring 15.
It can be seen that from the top half picture of Fig. 2, sliding shoe 8 connects in sliding driving motor 9, sliding crank 10, sliding
It is moved to the left under the collaboration linkage of bar 11, overturning push rod 12 can not reverse under the limit of right side block 13, so overturning push rod
12 push a wherein outer bar 14 at this time is moved to the left, and completes the feeding feeding of feeding belt 3, and when 9 turns of driving motor of sliding
After crossing certain angle, sliding crank 10 and slide link 11 can drive sliding shoe 8 to be moved back to the right, until overturning push rod 12 touches
The outer bar 14 adjacent with a upper outer bar 14, as long as ensureing that the torsion of torsional spring 15 passes through the outer less than feeding belt 3 at this time
Bar 14 is transferred to the resistance of overturning push rod 12, and sliding shoe 8 moves right again can will be such that overturning push rod 12 overturns, and form Fig. 2's
Form in the picture of lower half portion, after the outer bar 14 is skimmed on the top for overturning the overturning of push rod 12 and overturning push rod 12, due to
The presence of torsional spring 15, overturning push rod 12 can turn back vertical state again again, when sliding shoe 8 slides to the left again at this time, overturning
Push rod 12, which will push this root, causes its outer bar 14 overturn to be moved to the left, after sliding driving motor 9 constantly rotates, sliding
Block 8 can constantly slidably reciprocate, and sliding shoe 8 can also slide to the right certain distance again after overturning push rod 12 skims over outer bar 14,
It it is the slack interval time of feeding belt 3 during this section of sliding shoe 8 is slided and returned to the right.
The fortuitous event that can not be produced is generated to place hardware damage.The utility model has also been devised and feeding belt 3
The identical spare tape 6 of the effect that works, the component and connection relation mode which uses are as follows：
As shown in figure 3, interval feed mechanism includes locating rod 16, movable block 17, mobile driving motor 18, mobile crank
19, mobile connecting rod 20, rotating push rod 21 and ratchet mechanism, the inner band wall of above-mentioned feeding belt 3 is first-class to be equipped at intervals with several prolong
Boom 22, locating rod 16 is installed on smoke machine ontology 1 and its axis is parallel with the feed direction of feeding belt 3, and movable block 17 slides
It is arranged in locating rod 16, mobile driving motor 18 is installed on smoke machine ontology 1, and the motor shaft ends of mobile driving motor 18 connect
Then one end of crank 19 is moved, the other end of mobile crank 19 and one end of mobile connecting rod 20 are rotatablely connected, mobile connecting rod 20
The other end and movable block 17 be rotatablely connected, as the period of mobile crank 19 rotates, movable block 17 can be on gag lever post 7 back and forth
Sliding, the rotating push rod 21 have several, and even circumferential is distributed on a spill spin block 23, and spill spin block 23 passes through ratchet mechanism
It being connect with movable block 17, ratchet mechanism includes ratchet, and the internal tooth of the ratchet is identical as 21 mathematics of rotating push rod, in the top
The top of rotating push rod 21 is higher than the bottom of extension rod, and the adjacent another rotating push rod 21 of the top rotating push rod 21 at this time
Top be less than the bottom of extension rod, after rotating push rod 21 is positive mobile and touches extension rod, ratchet can not reverse, and make rotation
Turn push rod 21 and push the extension rod stepping, after rotating push rod 21 moves backward and touches extension rod, ratchet rotates forward, the rotation
Push rod 21 turns to skim over the extension rod from the outer force effect backspin of extension rod, and is turned with another adjacent before rotating push rod 21
Move vertical position and in running order, and ratchet rotate forward after its pawl squeeze into adjacent internal tooth.
It can be seen that from the top half picture of Fig. 3, movable block 17 is in mobile driving motor 18, mobile crank 19, movement
Connecting rod 20 collaboration linkage under be moved to the left, rotating push rod 21 can not reverse under the limit of ratchet, thus rotating push rod 21 this
When push a wherein extension rod and be moved to the left, complete the feeding feeding of feeding belt 3, and when mobile driving motor 18 turn over it is certain
After angle, mobile crank 19, mobile connecting rod 20 can drive movable block 17 to be moved back to the right, until overturning push rod 12 touches and upper one
The adjacent extension rod of root extension rod, due to ratchet generation the effect of be to make spill spin block 23 that can only be rotated toward direction, it is mobile
Block 17 moves right again can will be such that overturning push rod 12 overturns, and form the form in the lower half portion picture of Fig. 3, when overturning push rod
After the extension rod is skimmed on 12 overturnings and the top for overturning push rod 12, since the pawl of ratchet has been squeezed into next internal tooth, and it is interior
Number of teeth amount is identical (design for convenience, using 4 in the utility model actual production again with overturning 12 quantity of push rod
The overturning push rod 12 arranged in " cross " is uniformly arranged on spill spin block 23, and shown in Fig. 3 is such.), Ling Yigen
Adjacent overturning push rod 12 can translate into vertical state again, and when movable block 17 slides to the left again at this time, this root rolls up turn over
Turn push rod 12 will push this root cause its overturn extension rod be moved to the left, sliding driving motor 9 constantly rotate after, move
Block 17 can constantly slidably reciprocate, and after overturning push rod 12 skims over extension rod, movable block 17 can slide to the right a spacing again
From, this section movement slide and return to the right during, be the slack interval time of spare tape 6.
As shown in figure 4, interval switching mechanism includes linkage board 24, switch drive motor and cam bit 25, linkage board 24 with
Above-mentioned gear door 4 is connected, and switch drive motor is connected with smoke machine ontology 1, and cam bit 25 is connected to the motor shaft of switch drive motor
On, linkage board 24 is arranged above cam bit and is held by cam bit 25.With the startup of switch drive motor, 25 meeting of cam bit
Constantly rotation, since linkage board 24 is held in the palm in its upper surface after rotation, and linkage board 24 is connected with gear door 4, so will produce gear
The action that door 4 is constantly opened and closed.
It should be understood that in claims, specification of the utility model, all " including ... " should be understood as out
The meaning of formula is put, that is, its meaning is equal to " at least containing ... ", and should not be construed as enclosed meaning, is i.e. its meaning
It should not be construed " only including ... ".
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (4)
1. a kind of induced-draft fan of casting, which is characterized in that it includes smoke machine ontology (1), has smoke evacuation room in smoke machine ontology (1)
(2), it is equipped with feeding belt (3) in smoke evacuation room (2), the outlet flue being connected to smoke evacuation room (2), smoke evacuation are offered on smoke machine ontology (1)
The both sides of room (2), which are equipped with, enters the room mouth and goes out room mouthful, and casting mold passes through the transport of feeding belt (3), and via entering the room, mouth is sent into smoke evacuation room (2)
It is sent out again by going out room mouthful after inside carrying out smoke evacuation effect, goes out at room mouthful and be equipped with a gear door (4), gear door (4) is spaced switching mechanism one
The both ends tensioning of the interval door opening action of execution cycle property, feeding belt (3) is arranged on two tensioning wheels (5), and feeding belt (3) is logical
The interval feeding action of an interval stepping mechanism execution cycle property is crossed, the feeding belt (3) disk is additionally provided with a spare tape (6),
The interval feeding action that spare tape (6) passes through an interval feed mechanism execution cycle property.
2. a kind of induced-draft fan of casting according to claim 1, which is characterized in that the interval stepping mechanism includes limit
Position bar (7), sliding shoe (8), sliding driving motor (9), sliding crank (10), slide link (11), overturning push rod (12) and gear
Block (13), the inner band wall of above-mentioned feeding belt (3) is first-class to be equipped at intervals with several outer bars (14), and gag lever post (7) is installed in cigarette
On machine ontology (1) and its axis is parallel with the feed direction of feeding belt (3), and sliding shoe (8) is slidably arranged on gag lever post (7),
Sliding driving motor (9) is installed on smoke machine ontology (1), and the motor shaft ends of sliding driving motor (9) are connected to sliding crank
(10) one end of one end, the other end and the slide link (11) of sliding crank (10) is rotatablely connected, slide link (11) it is another
One end is rotatablely connected with sliding shoe (8), is rotated with the period of sliding crank (10), sliding shoe (8) can come up in gag lever post (7)
Sliding is returned, the overturning push rod (12) is rotatably arranged on sliding shoe (8), and block (13) is installed on sliding shoe (8) and position
It is other in overturning push rod (12), it is additionally provided with a torsional spring (15), the torsional spring at overturning push rod (12) and the rotation connection of sliding shoe (8)
(15) make overturning push rod (12) that there is the trend turned over to block (13) when not by external force, overturning push rod (12) is not when by external force
Top be higher than outer bar (14) bottom, when overturn push rod (12) touch outer bar (14) after and outer bar (14) give and turn over
Turn the active force of push rod (12) with its overturn trend direction it is identical when, overturning push rod (12) drives outer bar (14) at this mobile,
When overturn push rod (12) touch outer bar (14) after and give overturning push rod (12) active force overturn trend direction phase with it
Inverse time, overturning push rod (12) overturns the negative direction overturning of trend to it, after overturning push rod (12) skims over the outer bar (14),
Push rod (12) is overturn under the action of torsional spring (15) will revert to the position contacted with block (13).
3. a kind of induced-draft fan of casting according to claim 1 or 2, which is characterized in that the interval feed mechanism packet
Include locating rod (16), movable block (17), mobile driving motor (18), mobile crank (19), mobile connecting rod (20), rotating push rod
(21) and ratchet mechanism, the inner band wall of above-mentioned feeding belt (3) is first-class to be equipped at intervals with several extension rods (22), locating rod (16)
It is installed on smoke machine ontology (1) and its axis is parallel with the feed direction of feeding belt (3), movable block (17) is slidably arranged in positioning
On bar (16), mobile driving motor (18) is installed on smoke machine ontology (1), the motor shaft ends connection of mobile driving motor (18)
One end of mobile crank (19), the other end of mobile crank (19) and one end of mobile connecting rod (20) are rotatablely connected, mobile to connect
The other end of bar (20) is rotatablely connected with movable block (17), and as the period of mobile crank (19) rotates, movable block (17) meeting exists
Gag lever post slidably reciprocates on (7), and the rotating push rod (21) has several, and even circumferential is distributed on a spill spin block (23),
Spill spin block (23) is connect by ratchet mechanism with movable block (17), and ratchet mechanism includes ratchet, and internal tooth and the rotation of the ratchet push away
Bar (21) mathematics is identical, and the top of the rotating push rod (21) in the top is higher than the bottom of extension rod (22), and this is most at this time
The top of the adjacent another rotating push rod (21) of top rotating push rod (21) is less than the bottom of extension rod (22), works as rotating push rod
(21) after forward direction moves and touches extension rod (22), ratchet can not reverse, and rotating push rod (21) is made to push the extension rod (22)
Stepping, when rotating push rod (21) moves backward and after touch extension rod (22), ratchet rotates forward, the rotating push rod (21) is from extension
The outer force effect backspin of bar (22) turns to skim over the extension rod (22), and is rotated with another adjacent before rotating push rod (21)
To vertical position and in running order, and ratchet rotate forward after its pawl squeeze into adjacent internal tooth.
4. a kind of induced-draft fan of casting according to claim 1 or 2, which is characterized in that the interval switching mechanism packet
Linkage board (24), switch drive motor and cam bit (25) are included, the linkage board (24) is connected with above-mentioned gear door (4), switch
Driving motor is connected with smoke machine ontology (1), and cam bit (25) is connected on the motor shaft of switch drive motor, and linkage board (24) is set
It sets above cam bit (25) and is held by cam bit (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924128.2U CN207914302U (en) | 2017-12-30 | 2017-12-30 | A kind of induced-draft fan of casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924128.2U CN207914302U (en) | 2017-12-30 | 2017-12-30 | A kind of induced-draft fan of casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207914302U true CN207914302U (en) | 2018-09-28 |
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ID=63615864
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721924128.2U Active CN207914302U (en) | 2017-12-30 | 2017-12-30 | A kind of induced-draft fan of casting |
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| Country | Link |
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| CN (1) | CN207914302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097693A (en) * | 2017-12-30 | 2018-06-01 | 浙江前进暖通科技股份有限公司 | A kind of induced-draft fan of casting |
-
2017
- 2017-12-30 CN CN201721924128.2U patent/CN207914302U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097693A (en) * | 2017-12-30 | 2018-06-01 | 浙江前进暖通科技股份有限公司 | A kind of induced-draft fan of casting |
| CN108097693B (en) * | 2017-12-30 | 2024-04-19 | 浙江前进暖通科技股份有限公司 | Smoke extractor of foundry goods |
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