CN110239960A - Unloading valve group unloads grey method and powder fluidization system - Google Patents
Unloading valve group unloads grey method and powder fluidization system Download PDFInfo
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- CN110239960A CN110239960A CN201910433107.8A CN201910433107A CN110239960A CN 110239960 A CN110239960 A CN 110239960A CN 201910433107 A CN201910433107 A CN 201910433107A CN 110239960 A CN110239960 A CN 110239960A
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- Prior art keywords
- valve
- unloading
- powder
- grey
- group
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- 239000000843 powder Substances 0.000 title claims abstract description 74
- 238000005243 fluidization Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- 238000002716 delivery method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The present invention relates to the conveying of powder more particularly to unloading valve group, grey method and powder fluidization system are unloaded, unloading valve group, including being located at the multiple valves unloaded on grey channel, multiple valves successively include from top to bottom: the first valve, and second valve is powder stop valve；Second valve, the third valve are gas sealing valve.By the way that the combination of above-mentioned the first valve and the second valve is arranged, the barrier of powder and the barrier of air-flow can be made to separate, for having a kind of valve until now while obstructing powder and air-flow, can allowing valve, the service life is longer.One kind unloading grey method, unloads unloading valve group on grey channel including being located at, and unloading valve group unloads grey mode and close pattern, the first valve, finally opens in the case where unloading grey mode compared to lower valve, closes at first compared to lower valve in the off mode；Second valve is opened at first compared to upper valve in the case where unloading grey mode, is closed at first compared to upper valve in the off mode.
Description
Applicant submitted on March 1st, 2019 application No. is the 2019101553692, delivery methods of entitled powder
Application for a patent for invention, the full content of the patent application is incorporated to present patent application in a manner of quoting.
Technical field
The present invention relates to the conveying of powder more particularly to a kind of unloading valve group, unload grey method and powder fluidization system.
Background technique
After powder is discharged deduster, generally requires and conveyed, using pneumatic conveying by powder conveying to target
Before point, it is necessary first to powder is subjected to fluidization treatment, and powder is mixed with air-flow, be fluidized to Dual-Phrase Distribution of Gas olid it
Before, the powder in dust collector ash hopper needs constant speed quantitative to import in the storehouse pump for carrying out fluidisation work, the gas of the storehouse pump of working condition
Pressure is generally greater than the air pressure in deduster, and present way is all to be separated air-flow together with powder using a valve, needs
When powder is imported into the pump of storehouse, the valve is directly opened, simple roughly, this will lead to, and to unload grey channel valve sealing unreliable
The problem of be amplified, the problem be not found for a long time or it is ignored, do not draw attention, cause whole system to go wrong, i.e.,
It brings reverse high-speed flow to carry powder and form valve sealing face and be seriously worn and uncontrollable pressure release occurs with storehouse pump fluid mapper process
Problem is inversely collaborated phenomenon, i.e., must solve the problems, such as that unloading grey channel powder and the difference of gas reliably cuts off.
Summary of the invention
The object of the present invention is to provide a kind of unloading valve group, grey method and powder fluidization system are unloaded, it is expected to solve powder
The phenomenon of inversely collaborating of fluidization system.
To achieve the goals above, this application provides a kind of unloading valve groups, including being located at the multiple valves unloaded on grey channel
Door, multiple valves successively include from top to bottom:
First valve, above-mentioned first valve are powder stop valve；
Second valve, above-mentioned second valve are gas sealing valve；
Wherein, above-mentioned second valve includes the docking section on the valve passage passed through for material, docking section packet
Containing at least two components, a component has elastic material portion in above-mentioned at least two component, and the component and another component squeeze
Above-mentioned elastic material portion is pressed to block valve passage.
Before present powder unloads ash, setting valve obstructs powder, controls powder under the preset time by control valve
The amount of setting is fallen into, when in use, if the air pressure in lower reservoir is higher than valve upper container air pressure, ash is unloaded and not only unloads ash not
Smooth and running so for a long time, so that lower section air-flow is mixed with powder, the air-flow with powder of play not only can gradually be ground
Valve is damaged, also so that the barrier of valve, sealing function is gradually weakened；By the way that above-mentioned the first valve and the second valve is arranged
Combination, the barrier of powder and the barrier of air-flow can be made to separate, compared to obstructing simultaneously using one or a kind of valve now
For powder and air-flow, can allowing valve, the service life is longer, i.e. the second valve because there is barrier of first valve to powder,
Powder is set largely not contact the second valve, the air seal function of the second valve not will receive larger interference, then the first valve
Door be filled with the air-flow of lower reservoir will not upwards and mix with powder because of presence, the barrier to air-flow for having the second valve,
Play about or over first valve protects the top device of the first valve and valve group, this relationship group mutually successively
It closes, substantially increases the service life of valve group, substantially reduce to the maintenance cost for unloading grey equipment, very good solution is above-mentioned
Inversely collaborate phenomenon.
Further, above-mentioned first valve includes:
Main valve body, as a part for unloading grey channel；
First driving device is set on main valve body；
Pull rod is set in first driving device and unloads grey channel radial direction by first driving device drives edge and stretched
Contracting movement；
Seal member is set to pull bar termination, which is located in main valve body, unloads grey channel for sealing and prevents powder
Body falls.
Particularly, the containing cavities for storing seal member are provided on above-mentioned main valve body.
Further, above-mentioned seal member includes support and the flashboard that is set on support, above-mentioned flashboard passes through support
It is connect with above-mentioned pull rod；It is arranged fluted on above-mentioned flashboard, the boss being adapted to the groove is provided on above-mentioned support, it is above-mentioned convex
It is provided with spring in platform and stores the spring groove of the spring, above-mentioned spring is pressed in the spring groove by flashboard and support.
Further, above-mentioned second valve includes:
Upper valve body, above-mentioned upper valve body are connected to grey channel powder outlet end is unloaded；
Lower valve body, above-mentioned lower valve body be cover, lower valve body lower end be used for receive powder target container be connected to, upper end and
Upper valve body connection；
The part that above-mentioned upper valve body is connected to lower valve body is provided with the valve seat of sealing material preparation, the corresponding setting of the valve seat
There is flap, which is connect by valve petal shelf with the second driving device of flap movement is driven, and flap is realized after squeezing valve seat
Sealing.
Further, this unloading valve group further includes the third valve above the first valve, above-mentioned third valve is
Powder discharge valve.
Further, above-mentioned third valve includes:
Third driving device；
Shaft, the shaft are set in third driving device and its rotation are driven by motor；
Turnover panel is set in shaft, which, which is located at, unloads in grey channel, for controlling the powder amount to fall.
Further, unloading valve group further includes the 4th valve positioned at unloading valve group the top.
Further, above-mentioned 4th valve is gate valve.
Here the purpose that gate valve is arranged is that powder is stopped to fall, convenient to overhauling below.
Further, unloading valve group further includes the control module for switching sequence control, above-mentioned control module difference
It is communicated to connect with the first valve and the second valve.
Present invention also provides a kind of powder ash-discharging devices, including holding for receiving powder and can carry out the reception of release
Device, the feed end of above-mentioned reception container are connected with above-mentioned unloading valve group.
Particularly, above-mentioned unloading valve group is connected with deduster, the feed end of the unloading valve group and the discharge end of deduster
Connection.
Present invention also provides one kind to unload grey method, and including being located at the unloading valve group unloaded on grey channel, unloading valve group is unloaded
Grey mode and close pattern, unloading valve group successively include from top to bottom:
First valve, above-mentioned first valve are powder stop valve；Finally opened in the case where unloading grey mode compared to lower valve,
It is closed at first compared to lower valve in the off mode；
Second valve, above-mentioned second valve are gas sealing valve；Opened at first in the case where unloading grey mode compared to upper valve,
It is closed at first compared to upper valve in the off mode.
Present invention also provides a kind of powder fluidization systems, including for powder and air-flow to be mixed into Dual-Phrase Distribution of Gas olid
Storehouse pump, above-mentioned storehouse pump are connected to by above-mentioned unloading valve group with the ash discharge end of deduster, are provided with pressure relief device on above-mentioned storehouse pump.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partially will become apparent from the description below.Or practice through the invention
It solves.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to assist the understanding of the present invention, content provided in attached drawing and its
Related explanation can be used for explaining the present invention in the present invention, but not constitute an undue limitation on the present invention.In the accompanying drawings:
Fig. 1 is for illustrating the powder fluidization system schematic for being provided with unloading valve group in embodiment；
Fig. 2 is the partial enlargement diagram in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of the second valve；
In the figure, it is marked as the first valve of 1-, 110- main valve body, 120- first driving device, 130- pull rod, 140- sealing
Part, 141- support, 142- flashboard, 143- spring, the second valve of 2-, 210- upper valve body, 220- lower valve body, 230- valve seat, 240-
Flap, 3- third valve, 310- third driving device, 4- gate valve, 5- deduster, the storehouse 6- pump.
Specific embodiment
Clear, complete explanation is carried out to the present invention with reference to the accompanying drawing.Those of ordinary skill in the art are being based on these
The present invention will be realized in the case where explanation.Before in conjunction with attached drawing, the present invention will be described, of particular note is that:
The technical solution provided in each section including following the description and technical characteristic in the present invention are not rushing
In the case where prominent, these technical solutions and technical characteristic be can be combined with each other.
In addition, the embodiment of the present invention being related in following the description is generally only the embodiment of a branch of the invention, and
The embodiment being not all of.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
About term in the present invention and unit.Term in description and claims of this specification and related part
" comprising " and its any deformation, it is intended that cover and non-exclusive include.
Such as Fig. 1-3, present embodiments provide for a kind of powder fluidization systems, including for powder and air-flow to be mixed into gas
The storehouse pump 6 of fixed double phase flow, above-mentioned storehouse pump 6 are connected to by unloading valve group with the ash discharge end of deduster 5, are provided on above-mentioned storehouse pump 6
Pressure relief device, before unloading ash, storehouse pump 6 first carries out release by pressure relief device, after air pressure reaches preset threshold, opens in order
The each valve for opening unloading valve group carries out unloading grey work.Here ash-discharging device can be release filter, pressure relief valve etc..
It is more smooth, safe and reliable to unload ash when carrying out unloading ash for this powder fluidization system.
Embodiment one: above-mentioned unloading valve group unloads grey mode and close pattern, which includes by powder conveying
Grey channel is unloaded to powder receiving point, grey channel upper and lower side is unloaded and is respectively used to connection upper container and the lower container of release can be carried out,
Include:
First valve 1, first valve 1 be powder stop valve, for powder to be isolated, in the case where unloading grey mode compared to
Lower valve finally opens, closes at first compared to lower valve in the off mode；
Second valve 2, second valve are gas sealing valve, are set to the lower section of the first valve 1, the phase in the case where unloading grey mode
It opens compared with upper valve, close at first compared to upper valve in the off mode at first.
Using above-mentioned first valve 1 and the second valve 2, gas is allowed to be isolated with powder, in lower reservoir release
After the completion, it allows the grey process of association to go on smoothly, while powder being avoided to unload second valve 2 in grey channel to for sealing and interfere,
This unloading valve group can be substantially reduced long lasting for using to the maintenance cost for unloading grey equipment.
Above-mentioned first valve 1 includes main valve body 110, first driving device 120, pull rod 130 and seal member 140.It is above-mentioned
The containing cavities for storing seal member 140 are provided on main valve body 110.Main valve body 110 is as a part for unloading grey channel；The
One driving device 120 is set on main valve body 110；Pull rod 130 is set in first driving device 120 and by first driving device
120 drives edges unload grey channel radial direction and carry out stretching motion；Seal member 140 is set to 130 end of pull rod, the seal member
140 are located in main valve body 110, unload grey channel for sealing and prevent powder from falling.Above-mentioned seal member 140 includes 141 He of support
The flashboard 142 being set on support 141, above-mentioned flashboard 142 are connect by support 141 with above-mentioned pull rod 130；Above-mentioned flashboard 142
Upper setting is fluted, and the boss being adapted to the groove is provided on above-mentioned support 141,143 He of spring is provided in above-mentioned boss
The spring groove of the spring 143 is stored, above-mentioned spring 143 is pressed in the spring groove by flashboard 142 and support 141.When by pull rod
130 to when the propulsion of association channel, and seal member 140 leaves containing cavities, and seal member 140 blocks main valve body 110, that is, blocks and unload ash
Channel, when as also having the gap between flashboard 142 and main valve body 110, the effect of spring 143 makes flashboard 142 strut and promote outward
142 filling chink of flashboard.Above-mentioned first driving device 120 can be cylinder or motor.
Above-mentioned flashboard 142 can be set to two up and down, be supported by support 141.
Above-mentioned second valve 2 includes upper valve body 210 and lower valve body 220；Above-mentioned upper valve body 210 is exported with grey channel powder is unloaded
End connection；Above-mentioned 220 lower end of lower valve body is used to be connected to the target container for receiving powder, and upper end is connected to upper valve body 210；It is above-mentioned
The part that upper valve body 210 is connected to lower valve body 220 is provided with the valve seat 230 of sealing material preparation, the corresponding setting of valve seat 230
There is flap 240, which is connect by valve petal shelf with the second driving device of the flap 240 movement is driven, and flap 240 squeezes
Sealing is realized after pressure valve seat 230, that is, is sealed, blocked and unload grey channel.Here the second driving device can be cylinder or hydraulic cylinder,
The extruding valve seat of flap 240 is controlled by connection rod set or is separated with valve seat.
Embodiment two: on the basis of example 1, it is provided with third valve 3 above above-mentioned first valve 1, the third valve
Door 3 is powder discharge valve, is finally opened in the case where unloading grey mode compared to upper valve, in the off mode compared to upper valve
It closes at first.By the way that third valve 3 is arranged, allow the blanking of powder, metering relatively reliable in this way, while in the base of the first valve 1
Play the role of strengthening powder barrier on plinth.In unloading grey mode, valve opening sequence is first beaten by successively opening from bottom to up
Third valve 3 is opened, then opens the second valve 2, the first valve 1 is then opened again and is successively closed from top to bottom in close pattern
It closes, that is, first closes the first valve 1 when closing, turn off the second valve 2, be then shut off third valve 3.
Third valve 3 includes third driving device 310, shaft and turnover panel；Shaft is set in third driving device 310 simultaneously
Its rotation is driven by motor；Turnover panel is set in shaft, which, which is located at, unloads in grey channel, for controlling the powder amount to fall.
Here third driving device can be motor.
Embodiment three: on the basis of embodiment one or two, the top of above-mentioned first valve 1 is provided with gate valve 4, above-mentioned
Gate valve 4 for finally being opened in the case where unloading grey mode compared to lower valve, in the off mode at first compared to lower valve
It closes.Here the purpose that gate valve 4 is arranged is that powder is stopped to fall, convenient to overhauling below.
Example IV: on the basis of one to three any one of embodiment, unloading valve group further includes for switching sequence control
The control module (not shown) of system, above-mentioned control module is communicated to connect with the first valve 1 and the second valve 2 respectively, with right
First valve 1 and the second valve carry out sequential control.When being provided with third valve 3, this control module can also be with third
Valve 3 communicates to connect.Above-mentioned control module is using conventional PLC control module.
By using above-mentioned unloading valve group, present embodiment additionally provides a kind of powder ash-discharging device, including for connecing
It receives powder and the reception container of release can be carried out, the feed end of above-mentioned reception container is connected with above-mentioned unloading valve group.
Above-mentioned unloading valve group can connect deduster 5, and the feed end of the unloading valve group and the discharge end of deduster 5 connect
It is logical.
When unloading ash, powder is discharged deduster 5 from discharge end, and powder arrives at unloading valve group, before unloading ash, receives container
Release is first carried out, after reaching preset threshold, each valve of unloading valve group is opened by respective sequence, carries out unloading grey work.
Related content of the invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these
The present invention will be realized under condition.Based on above content of the invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, should fall within the scope of the present invention under the premise of labour.
Claims (10)
1. unloading valve group, including being located at the multiple valves unloaded on grey channel, characterized in that multiple valves successively wrap from top to bottom
Contain:
First valve, first valve are powder stop valve；
Second valve, second valve are gas sealing valve；
Wherein, second valve includes the docking section on the valve passage passed through for material, which includes extremely
Lack two components, a component has elastic material portion at least two component, and the component and another component squeeze institute
Stating elastic material portion blocks valve passage.
2. unloading valve group as described in claim 1, characterized in that first valve includes:
Main valve body, as a part for unloading grey channel；
First driving device is set on main valve body；
Pull rod, is set in first driving device and unloads grey channel radial direction by first driving device drives edge and carry out flexible fortune
It is dynamic；
Seal member is set to pull bar termination, which is located in main valve body, unloads grey channel for sealing and prevents under powder
It falls.
3. unloading valve group as claimed in claim 2, characterized in that be provided on the main valve body for storing seal member
Containing cavities.
4. unloading valve group as claimed in claim 2, characterized in that the seal member includes support and is set on support
Flashboard, the flashboard are connect by support with the pull rod；Be arranged on the flashboard it is fluted, be provided on the support with should
The boss of groove adaptation is provided with spring in the boss and stores the spring groove of the spring, and the spring is by flashboard and support
It is pressed in the spring groove.
5. unloading valve group as described in claim 1, characterized in that second valve includes:
Upper valve body, the upper valve body are connected to grey channel powder outlet end is unloaded；
Lower valve body, the lower valve body be cover, the lower valve body lower end be used for receive powder target container be connected to, upper end and
Upper valve body connection；
The part that the upper valve body is connected to lower valve body is provided with the valve seat of sealing material preparation, and the valve seat is corresponding to be provided with valve
Valve, the flap are connect by valve petal shelf with the second driving device of flap movement is driven, and flap realizes sealing after squeezing valve seat.
6. unloading valve group as described in claim 1, characterized in that further include the third valve above the first valve, institute
Stating third valve is powder discharge valve.
7. unloading valve group as claimed in claim 6, characterized in that the third valve includes:
Third driving device；
Shaft, the shaft are set in third driving device and drive its rotation by driving device；
Turnover panel is set in shaft, which, which is located at, unloads in grey channel, for controlling the powder amount to fall.
8. unloading valve group as described in claim 1, characterized in that it further include the 4th valve positioned at unloading valve group the top,
4th valve is gate valve.
9. unloading grey method, characterized in that including being located at the unloading valve group unloaded on grey channel, unloading valve group unloads grey mode and closing
Mode, unloading valve group successively include from top to bottom:
First valve, first valve are powder stop valve；It finally opens, closing compared to lower valve in the case where unloading grey mode
It is closed at first under close pattern compared to lower valve；
Second valve, second valve are gas sealing valve；It opens, closing at first compared to upper valve in the case where unloading grey mode
It is closed at first under close pattern compared to upper valve.
10. powder fluidization system is pumped including the storehouse for powder and air-flow to be mixed into Dual-Phrase Distribution of Gas olid, the storehouse pump is by such as
Unloading valve group described in claim 1~8 any one is connected to the ash discharge end of deduster, is provided on the storehouse pump and is unloaded press fitting
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433107.8A CN110239960A (en) | 2019-05-23 | 2019-05-23 | Unloading valve group unloads grey method and powder fluidization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433107.8A CN110239960A (en) | 2019-05-23 | 2019-05-23 | Unloading valve group unloads grey method and powder fluidization system |
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| CN110239960A true CN110239960A (en) | 2019-09-17 |
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| CN201910433107.8A Pending CN110239960A (en) | 2019-05-23 | 2019-05-23 | Unloading valve group unloads grey method and powder fluidization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115301013A (en) * | 2021-05-05 | 2022-11-08 | 上海梅山钢铁股份有限公司 | Green environment-friendly dust-free suction device and method |
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