CN203428534U - Blast furnace dry dedusting dense phase pneumatic conveying system - Google Patents
Blast furnace dry dedusting dense phase pneumatic conveying system Download PDFInfo
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- CN203428534U CN203428534U CN201320481028.2U CN201320481028U CN203428534U CN 203428534 U CN203428534 U CN 203428534U CN 201320481028 U CN201320481028 U CN 201320481028U CN 203428534 U CN203428534 U CN 203428534U
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Abstract
The utility model discloses a blast furnace dry dedusting dense phase pneumatic conveying system, which comprises a bin pump; the inlet of the bin pump is provided with an input pipeline; the outlet of the bin pump is provided with an output pipeline; an inlet valve and an outlet valve are respectively arranged on the input pipeline and the output pipeline; an abrasion-resistant elbow is arranged on the output pipeline; a gas injecting port is arranged at the wall of the upper part of the bin pump and is connected with a gas input pipe for conveying; an exhaust port is further formed in the wall of the upper part of the bin pump and is connected with an exhaust pipeline and is communicated with the outside of the bin pump; a star-shaped gas locking cindervalve is arranged in front of the inlet valve on the input pipeline; the outlet end of the shell of the cindervalve is hermetically connected with the gas inlet of the inlet valve by the input pipeline; the inlet end of the shell of the cindervalve is hermetically connected with the upstream input pipeline. An isolation valve and an inlet dome valve can be protected by the blast furnace dry dedusting dense phase pneumatic conveying system from being abraded in the action process, so the problem of abrasion of the inlet valve in a dense phase pneumatic conveying system is solved.
Description
Technical field
The utility model relates to blast furnace dry method dust ash air-transport system, especially dry-method dedusting dense-phase pneumatic transmission system of blast furnace.
Background technology
Traditional have two kinds for blast furnace dry method dust ash air-transport system: 1. dilute phase pneumatic conveying system, and its shortcoming is that air consumption is large, pipeline, pipe valve are easy to wear, pipe valve is on average less than 2 months service life, 2. concentrated phase desgn of vessel type pnenmatic pump system, in this delivery system, unloading ash carries out being with under pressure condition, pressure can reach 0.25Mpa conventionally, in existing delivery system, the access valve arranging on the entrance pipe of concentrated phase cone pump is two push-pull valves or two ball valve, in this class valve opening and closing process in use, to be subject to the strong impact of hydraulic fluid, valve plate wherein or valve seat are often by severe wear or wash away, cause the mean life of the valve at this position to be less than 2～3 months, and the steel structure elbow of the lower end of concentrated phase cone pump outlet is easy to wear, thereby cause the damage of delivery conduit.Change steel structure elbow frequent, and need often safeguard delivery conduit.Like this, the use for dense phase pneumatic conveying system brings very large impact.
Mostly the valve arranging on the outlet pipe of concentrated phase cone pump of the prior art is push-pull valve etc., in use also has more serious wear problem.Have again, in order to make stove dirt ash successfully to enter cone pump, be provided with exhausr port, on exhausr port, be provided with bleeder line.Described bleeder line of the prior art normally extends on the dust casing of cone pump upstream, by dust emissions to the dust casing of cone pump upstream, but, if conveying dust with pressure, the pressure when pressure in casing is greater than and inputs dust in lower face-pumping, gas exhaust duct just can not access described casing, like this, the problem of exhaust has just become a difficult problem, and how to process can safety, environmental protection and simple in structure easy to operate, is also problem to be solved in the utility model.
Utility model content
The purpose of this utility model is to improve the deficiencies in the prior art, provide a kind of and can adapt to the grey working environment that unloads with pressure, and the dry-method dedusting dense-phase pneumatic transmission system of blast furnace that can make the wear problem of inlet valve in delivery system, exit bend be resolved.
The further object of the utility model is to provide a kind of dry-method dedusting dense-phase pneumatic transmission system of blast furnace that makes entrance dome valve in this delivery system valve plate and seal ring in opening and closing there is no wearing and tearing.
Another object of the present utility model is to provide a kind of and can discharges fast gas in cone pump and dust can be injected rapidly and the dry-method dedusting dense-phase pneumatic transmission system of blast furnace of high-efficiency environment friendly.
For achieving the above object, the utility model is by the following technical solutions:
A kind of dry-method dedusting dense-phase pneumatic transmission system of blast furnace, comprise a cone pump, entrance at this cone pump is provided with chargine line, exit arranges delivery conduit, on this chargine line and delivery conduit, be respectively equipped with inlet valve and outlet valve, on this delivery conduit, be provided with the wear-resistant bend with the fluidisation hole of at least one body of can ventilating, on the wall of the top of described cone pump, be provided with gas injection port, on it, connect to carry and use gas input pipe, on the wall of the top of described cone pump, be also provided with exhausr port, on it, connect bleeder line and be communicated with outward with pump; Wherein, before this chargine line upper inlet valve, be provided with a lock gas unloading valve, this lock gas unloading valve is star-shaped ash unloading valve, and the exit end of its housing connects the admission port of described inlet valve hermetically by chargine line, and its arrival end connects the chargine line of upstream hermetically; This wear-resistant bend is arranged on the delivery conduit of admission port upstream of outlet valve and is connected with the lower end exit seal of described cone pump.
The described inlet valve arranging on described chargine line and/or outlet valve can be dome valve or push-pull valve, and valve plate wherein connects driver train.By driver train, realize the opening and closing of this valve.
Perforate on the bulkhead of the top of described cone pump. take this perforate connects one end of this bleeder line as exhausr port, its other end is connected on the described delivery conduit in below of described cone pump, and the port of this bleeder line is connected on the delivery conduit in described outlet valve downstream.In addition, a dome valve can also be set on described bleeder line, using dome valve is also in order to reduce the wearing and tearing of seal ring.
Preferably, the described wear-resistant bend of casting comprises three described fluidisation holes, described in each, fluidisation hole is communicated with described wear-resistant bend internal path, the port that this wear-resistant bend is connected with the lower end exit seal of described cone pump is the first connecting portion, described in each, fluidisation hole is located on this first connecting portion, the port being tightly connected that this wear-resistant bend connects described delivery conduit is the second connecting portion, and a side of not corresponding described the second connecting portion of described the first connecting portion is divided equally in three these fluidisation holes.
Described the first connecting portion is a flange, and described fluidisation hole is located in the circular side wall of this flange.
Further, described dome valve is preferably used gas-flow closure dome valve of the prior art, valve plate and the seal ring between valve seat of this dome valve are arranged on valve seat, on valve seat and be provided with gas injection passage and connect seal ring annular groove, gas injection passage connects gas injection device, on described gas injection passage, connect air valve, on this air valve, connect open-close on-off.By gas injection in closure gasket groove, make seal ring expansion evagination and valve plate form hermetically-sealed construction, and stop gas injection, seal ring inside contracts, and forms gap with valve plate.During use, when dome valve is during in closed condition, gas injection device continues gas injection, guarantee to seal between valve plate and valve seat, in the time will opening dome valve, stop gas injection, valve plate rotates under the driving of its actuating device, when again closing on dome valve, when valve plate moves to off position, restart gas injection.
The keying link gear of the described air valve connecting on gas injection passage is set on the driver train of described dome valve, it can be a triggering part being connected with described gas valve starter, it is arranged on position such in frame: when the described valve plate that the movement parts on described actuating device moves to its drive is closed on the position of described chargine line, touch the triggering part of the described air valve of unlatching and realize inflation, when actuating device drives this valve plate to lift off a seat, described movement parts departs from described triggering part and stops inflation.
Because this dry-method dedusting dense-phase pneumatic transmission system of blast furnace is that stove dirt ash is filled to cone pump by chargine line, then close the valve on chargine line, open the valve on escape route, and in cone pump, be filled with conveying gas by air delivering pipeline, stove dirt ash in pump is extruded to cone pump, then shut the valve on escape route, open the valve on chargine line.Above-mentioned steps constantly has the rhythm and pace of moving things and repeats, thus, the valve arranging on the chargine line of cone pump and escape route is all used gas-flow closure dome valve as above, by the coordination of the driver train of two dome valves is controlled, alternately open and close, just can realize easily the feeding operation at intermittence of storage pump.
Described lock gas unloading valve can be gas injection sealed type star-shaped ash unloading valve; Or described wear-resistant bend is ductile cast iron material.Gas injection sealed type star-shaped ash unloading valve is also existing valve, so be not repeated herein.
Bleeder line is set like this, and the gas of discharging from cone pump is directly discharged in the delivery conduit of cone pump, because the pressure in chargine line is lower, can not affect exhaust completely, meanwhile, along with the dust that exhaust is taken out of is inputted in delivery conduit, can bring in the lump in the ash bucket in downstream.I.e. safety, the environmental protection again of exhaust structure that cone pump is such, structure is very simple simultaneously, also very convenient in operation.
The described bleeder line that perforate connects on the bulkhead of the top of described cone pump, it is connected on the described delivery conduit in below of described cone pump, and the port of this bleeder line is connected on the delivery conduit in described outlet valve downstream.
In order to guarantee that the fluid pressure in pipeline reduces after lock gas unloading valve, minimizing is for pipeline and the wherein wearing and tearing of valve, guarantee accumulation height and the described rotor in described lock gas unloading valve and the gap between described housing of dust in the dedusting ash casing of described chargine line top, so, in the described dedusting ash casing arranging in described chargine line upstream, dust position transduser is set, this dust position transduser apart from the height of ash hole and the gap between described lock gas unloading valve rotor and housing is: the pressure differential deltap P that makes described unloading valve both sides is below 0.5bar.Like this, the stove dirt that flows through lock gas unloading valve in dry method dust ash air-transport system has not has not just worn and torn substantially for inlet valve below.
In cone pump, establish a plate baffle, this plate baffle and this admission port are oppositely arranged, and between this plate baffle and this admission port, leave gap, and the pressurized air that makes to enter cone pump is not directly blown on material and first blown on plate baffle, after baffling, blows on material again
The utility model beneficial effect is: the utility model beneficial effect is: the dry-method dedusting dense-phase pneumatic transmission system of blast furnace that the utility model provides is by arranging lock gas unloading valve between the disconnecting valve on the transfer line between on the chargine line at dust collector ash hopper and cone pump and entrance dome valve, making does not have dust with pressure to pass through in the inlet valve switching motion process on chargine line, can solve well like this this valve and in periodic frequent movement, be subject to washing away by quick-wearing Problem of Failure very of dust logistics with pressure; In addition, by the chargine line at cone pump to such an extent as to use gas-flow closure dome valve on escape route, this dome valve gas-flow closure characteristic, can, so that the valve plate of dome valve is accomplished zero friction in opening and closing motion frequently, can guarantee the service life of valve thus.This air-transport system makes native system environmental protection more for the improvement of freeing pipe.Have, under cone pump, wear-resistant bend is established in outlet, than having improved 3～5 times the service life of former steel structure elbow again.Solved material baffling erosive wear, the service life of having improved delivery conduit.
Accompanying drawing explanation
The structural representation sketch of the dry-method dedusting dense-phase pneumatic transmission system of blast furnace that Fig. 1 provides for the utility model.
The structural representation of the transfer line of dust collector ash hopper below and the part of cone pump below in the dry-method dedusting dense-phase pneumatic transmission system of blast furnace that Fig. 2 provides for the utility model.
Fig. 3 is the plan structure schematic diagram of Fig. 2.
Fig. 4 is the perspective view of wear-resistant bend.
Fig. 5 is the structural representation of looking up of wear-resistant bend.
The specific embodiment
Below only with embodiment, the enforcement aspect that the utility model is possible is described, however not in order to limit the category of the utility model institute wish protection, first give chat bright.
As shown in Figure 1 to Figure 3, the air-transport system described in the present embodiment is that the blast furnace ash that bag dust collector is collected utilizes cone pump concentrated phase positive pneumatic conveying system to be delivered to large ash silo.
This system is under dust collector ash hopper, ash conveying device to be installed to carry out collection material, and transports material to large ash silo by delivery duct.
This air-transport system comprises a cone pump 5, entrance, upper end at this cone pump 5 is provided with chargine line, exit, lower end arranges delivery conduit, is respectively equipped with inlet valve 4 and outlet valve 6 on this chargine line 0 and delivery conduit 7, on this delivery conduit 7, is provided with wear-resistant bend.
The top of chargine line 0 connects dedusting ash casing 1, and blast furnace dry method dust ash falls into this dedusting ash casing 1, in the exit, lower end of this casing 1, disconnecting valve 2 is set, and it can be ball valve or push-pull valve.The exit end of disconnecting valve 2 connects the described chargine line of cone pump, in the upstream of this chargine line 0 upper inlet valve 4, be provided with a lock gas unloading valve 3, this lock gas unloading valve 3 is star-shaped ash unloading valve, the exit end of its housing connects the admission port of described inlet valve 4 hermetically by chargine line 0, its arrival end connects the disconnecting valve 2 of upstream by chargine line 0.On this delivery conduit 7, be provided with the wear-resistant bend 53 with the fluidisation hole 531 of at least one body of can ventilating.This fluidisation hole can prevent that material from hardening, stopping up in elbow after passing into gas, and material cannot be carried, avoid breaking down, and without taking dredging, unimpeded apart.
On the wall of the top of cone pump 5, be provided with gas injection port 51, on it, connect and carry use gas input pipe 9, at this, be nitrogen input pipe; This input pipe connects supplying nitrogen source of the gas, on the wall of the top of cone pump 5, is also provided with exhausr port 52, connects bleeder line 8 and be communicated with outward with pump on it.Preferably perforate on the top bulkhead of described cone pump 5. take this perforate connects one end of this bleeder lines 8 as exhausr port 52, its other end is connected on the described delivery conduit 7 in below of described cone pump 5, and the port of this bleeder line 8 is connected on the delivery conduit 7 in described outlet valve 6 downstreams.
As shown in Figure 2, the lower end of preferred described freeing pipe 8 is connected on the below delivery conduit 7 of described cone pump 5, and the port of this bleeder line 8 is connected on the delivery conduit 7 in described outlet valve 6 downstreams.On bleeder line 8, be provided with a valve 81, in order to prevent that, when pumping dust, dust returns pump from bleeder line.This valve 81 can be also dome valve.Use dome valve can reduce the wearing and tearing of seal ring.Preferably the described wear-resistant bend of casting is three-port structure, and its two ends connect respectively described delivery conduit 7 hermetically, and its other one end connects the port of air extractor duct one side that is positioned at valve 81 on this bleeder line 8.
In order to guarantee unobstructed blanking, during cone pump 5 blanking, need exhaust, conventionally exhaust is to be discharged to 1 li of dedusting ash casing above, still, and when the ash bucket when is above band pressure, cannot directly be discharged in ash bucket, so, be discharged in delivery pipe because delivery pipe and receiving bin together with, here there is no difference of pressure, easy to exhaust.
As shown in Figure 4 and Figure 5, preferably, the described wear-resistant bend 53 of casting is ductile cast iron material, comprise three described fluidisation holes 531, described in each, fluidisation hole 531 is communicated with described wear-resistant bend 53 internal paths, the port that this wear-resistant bend 53 is connected with the lower end exit seal of described cone pump 5 is the first connecting portion 532, described in each, fluidisation hole 531 is located on this first connecting portion 532, the port being tightly connected that this wear-resistant bend 53 connects described delivery conduit 7 is the second connecting portion 533, a side of not corresponding described the second connecting portion 533 of described the first connecting portion 532 is divided equally in three these fluidisation 531 holes.
Furthermore, described the first connecting portion 532 is a flange, and described fluidisation hole 531 is located in the circular side wall of described flange.
The wear-resistant bend that the spheroidal graphite iron of take is material, has increased resistance to abrasion, than having improved 3～5 times the service life of former steel structure elbow, has solved the problem of material baffling erosive wear, the service life of having improved delivery conduit.And set up the fluidisation hole that passes into gas, can prevent that material from hardening, stopping up in elbow, material cannot be carried.
The inlet valve 4 and the outlet valve 6 that on this chargine line 0 and delivery conduit 7, arrange are gas-flow closure dome valve in the present embodiment.
Described dome valve is gas-flow closure dome valve, valve plate and the seal ring between valve seat of this dome valve are arranged on valve seat, and on valve seat and be provided with gas injection passage and connect seal ring annular groove, gas injection passage connects gas injection device, on described gas injection passage, connect air valve, on this air valve, connect open-close on-off.
The valve plate of this dome valve connects a piston drive mechanism, the keying link gear of the described air valve connecting on gas injection passage is set on the driver train of described dome valve, it is arranged on such position: when the described valve plate that the movement parts on described actuating device moves to its drive is closed on the position of described chargine line, touch the triggering part of the described air valve of unlatching and realize inflation, when actuating device drives this valve plate to lift off a seat, described movement parts departs from described triggering part and stops inflation.
Lock gas unloading valve 3 is star-shaped ash unloading valve, described star-shaped ash unloading valve is prior art, it comprises housing and is located at rotationally the rotor in this housing, on described rotor, be provided with some blades, between blade and housing, leave gap, the axle head of the rotor shaft extension that connects described rotor outside housing connects a driver train M(as shown in Figure 1), the rotation of rotor makes to be with hydraulic fluid to flow through described chargine line 0, enters cone pump 5.Have, described lock gas unloading valve 3 is gas injection sealed type star-shaped ash unloading valve, passes into nitrogen and seal during use again.Its hermetically-sealed construction is prior art.In operation process, along with driver train M rotor driven rotates, make stove dirt ash by described inlet valve 4, enter cone pump 5 continuously.
As shown in Figure 3, on this valve seat 40, be provided with an elastic seal ring, this elastic seal ring forms an air flue with this valve seat contacting with it, and this air flue is provided with gas port, connects air valve; The opening/shutting controller of this air valve and the interlock of the actuating device of described valve plate, the structure of this air flue is: when described valve plate 41 falls within on this valve seat 40 under actuating device 411 drives, by air valve, inflate to described air flue, this elastic seal ring expands and seals the gap between valve plate 41 and valve seat 40, when driving these valve plates 41, actuating device 411 lifts off a seat when 40, inflation in described air flue is laid down, and makes described elastic seal ring recover original form and departs from and the contacting of valve plate.
Special gas-flow closure design described in dome valve, when guaranteeing valve seal, has been avoided the friction of valve spool of valve and seal ring completely, increases the life-span of valve.
Preferably for avoiding, the gas pouring in cone pump 5 does not directly dispel on material, cause that blowing of material flies, cause " boiling " phenomenon, in cone pump 5, establish a plate baffle, this plate baffle and this admission port 51 are oppositely arranged, and between this plate baffle and this admission port 51, leave gap, the gas that makes to enter cone pump 5 does not directly blow on material and first blows on plate baffle, after baffling, blows on material again
This air-transport system is work like this: first, the outlet valve 6 of cone pump is closed, inlet valve 4 is opened, by chargine line 0, dust in dust collector ash hopper 1 is inputted in cone pump 5 continuously by lock gas unloading valve 3, the amount of dust in cone pump 5 reaches after specified amount, inlet valve 4 is closed, outlet valve 6 is opened, carry the valve open on use gas input pipe 9 simultaneously, to the nitrogen of the interior injection certain pressure of cone pump 5, the dust in pump is discharged and enter wear-resistant bend, delivery conduit 7, then input large ash silo (not shown).This air-transport system is exactly to carry dust by mode intermittently.
When needs stop inputting dust in cone pump 5, the lock gas unloading valve 3 that first stops, and then close inlet valve 4.While recovering input dust, first inlet valve 4 is opened, then started the driver train of lock gas unloading valve 3.Like this, owing to being provided with lock gas unloading valve, the keying of inlet valve 4 is all not carry out the in the situation that of there is no material in pipeline, and therefore, the wear pattern of inlet valve 4 just can thoroughly solve.
At the wear-resistant bend of cone pump, the nitrogen for mass transport in delivery conduit 7, after can filtering by this device dust exhaustor that the bleeder line of large ash silo arrange, be discharged to atmosphere below.Simultaneously large ash silo top arranges the safe operation that vacuum pressure Dump valve guarantees system.
The path of flowing through of dust in this ash-transmission system (or being called defeated grey technological process) is as follows:
Dust sequentially passes through: dust collector ash hopper 1 → disconnecting valve 2 → lock gas unloading valve 3 → entrance dome valve 4 → cone pump 5 → wear-resistant bend 53 → outlet dome valve 6 → ash handing pipeline 7 → termination rack → large ash silo.
In actual applications, some cover ash-transmission systems can be set, it is arranged in parallel, and cone pump wherein is all arranged on a transfer line.
Ash-transmission system operation can be: disconnecting valve 2 often leaves, and only when maintenance, closes buffer action.Dust collector ash hopper 1 below arranges and starts defeated grey level-sensing device, when control system detects defeated ash startup material level signal, the priority of carrying according to system first starts in row's cone pump, and cone pump 5 entrance dome valves 4 are opened, after certain time delay, open lock gas unloading valve 3 and unload ash, when unloading after the ash time arrives, first close locking gas unloading valve 3, then close cone pump entrance dome valve 4, start delivery system, in cone pump, input nitrogen, blast furnace dust is delivered to large ash silo.As long as there is a pump to carry on a transfer line, other pump is just in halted state, chain each other between valve described in each.Native system unloads separately ash to each dust collector box body and carries.Owing to there being coal gas to exist in system, so carry, adopt compressed nitrogen as carrying source of the gas.
For guaranteeing that blast furnace gas does not leak to transmission pump, lock gas discharge valve 3 is set between disconnecting valve 2 and cone pump, and guarantees that each ash bucket cone has certain safety ash amount, isolates blast furnace gas and pressure.As shown in Figure 1, three limit sensors LS are set in dedusting ash casing 1, the limit sensors or the stuff level switch LS that are arranged in lower box cone section guarantee minimum amount of dust in dedusting ash casing, safety ash is measured, certain ash amount in described rotor in described lock gas unloading valve 3 and the gap between described housing and setting ash bucket centrum, can be so that the pressure in pipeline be below 0.5bar after described unloading valve.
In native system, lock gas unloading valve 3 is set on chargine line 0, inlet valve 4 is used the dome valve of gas-flow closure, and the design of combinations thereof can better adapt to the grey occasion of unloading with pressure.
The air-transport system that the utility model provides is suitable for blast furnace gravitational dust collection ash, the grey conveying of dry method dust.
As shown in Figure 1, on the chargine line 0 of cone pump 5 and delivery conduit 7 and nitrogen transfer line 9, be all provided with pressure switch PS, on nitrogen transfer line 9, be provided with flow-through orifice FO, be also provided with pneumatic valve PV and hand valve HV.
Claims (10)
1. a dry-method dedusting dense-phase pneumatic transmission system of blast furnace, comprise a cone pump (5), in the entrance of this cone pump (5), be provided with chargine line (0), exit arranges delivery conduit (7), on this chargine line (0) and delivery conduit (7), be respectively equipped with inlet valve (4) and outlet valve (6), on this delivery conduit (7), be provided with the wear-resistant bend (53) with the fluidisation hole of at least one body of can ventilating, on the wall of the top of described cone pump, be provided with gas injection port, on it, connect and carry use gas input pipe (9), on the wall of the top of described cone pump, be also provided with exhausr port (52), on it, connecting bleeder line (8) is communicated with outward with pump, it is characterized in that: before the above inlet valve of this chargine line (0) (4), be provided with a lock gas unloading valve (3), this lock gas unloading valve is star-shaped ash unloading valve, the exit end of its housing connects the admission port of described inlet valve hermetically by chargine line, its arrival end connects the described chargine line of upstream hermetically, the delivery conduit (7) that this wear-resistant bend (53) is arranged on the admission port upstream of outlet valve (6) is above connected with the lower end exit seal of described cone pump (5).
2. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 1, it is characterized in that: the described inlet valve arranging on described chargine line and/or outlet valve are dome valve or push-pull valve, valve plate wherein connects the opening and closing driver train of realizing this valve.
3. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 1, it is characterized in that: perforate on the bulkhead of the top of described cone pump, take this perforate connects one end of this bleeder line as exhausr port, the other end of this bleeder line is connected on the described delivery conduit in below of described cone pump, the port of this bleeder line is connected on the delivery conduit in described outlet valve downstream, and a dome valve is set on described bleeder line.
4. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 1, it is characterized in that: the described wear-resistant bend of casting comprises three described fluidisation holes, described in each, fluidisation hole is communicated with described wear-resistant bend internal path, the port that this wear-resistant bend is connected with the lower end exit seal of described cone pump is the first connecting portion, described in each, fluidisation hole is located on this first connecting portion, the port being tightly connected that this wear-resistant bend connects described delivery conduit is the second connecting portion, a side of not corresponding described the second connecting portion of described the first connecting portion is divided equally in three these fluidisation holes.
5. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 4, is characterized in that: described the first connecting portion is a flange, and described fluidisation hole is located in the circular side wall of this flange.
6. according to the dry-method dedusting dense-phase pneumatic transmission system of blast furnace described in claim 2 or 3, it is characterized in that: described dome valve is gas-flow closure dome valve, valve plate and the seal ring between valve seat of this dome valve are arranged on valve seat, on valve seat and be provided with gas injection passage and connect seal ring annular groove, gas injection passage connects gas injection device, on described gas injection passage, connect air valve, on this air valve, connect open-close on-off.
7. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 6, it is characterized in that: the keying link gear that the described air valve connecting on gas injection passage is set on the driver train of described dome valve, it is a triggering part being connected with described gas valve starter, it is arranged on such position: when the described valve plate that the movement parts on described actuating device moves to its drive is closed on the position of described chargine line, touch the triggering part of the described air valve of unlatching and realize inflation, when actuating device drives this valve plate to lift off a seat, described movement parts departs from described triggering part and stops inflation.
8. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 1, is characterized in that: described lock gas unloading valve is gas injection sealed type star-shaped ash unloading valve; Or described wear-resistant bend is ductile cast iron material.
9. according to the dry-method dedusting dense-phase pneumatic transmission system of blast furnace described in claim 1 or 8, it is characterized in that: in the dedusting ash casing arranging in described chargine line upstream, dust position transduser is set, this dust position transduser apart from the height of ash hole and the gap between described lock gas unloading valve rotor and housing is: the pressure differential deltap P that makes described unloading valve both sides is below 0.5bar.
10. dry-method dedusting dense-phase pneumatic transmission system of blast furnace according to claim 6, it is characterized in that: in cone pump, establish a plate baffle, this plate baffle and this admission port are oppositely arranged, between this plate baffle and this admission port, leave gap, the gas that makes to enter cone pump does not directly blow on material and first blows on plate baffle, after baffling, blows on material again.
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| CN201320481028.2U CN203428534U (en) | 2013-08-07 | 2013-08-07 | Blast furnace dry dedusting dense phase pneumatic conveying system |
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| CN201320481028.2U CN203428534U (en) | 2013-08-07 | 2013-08-07 | Blast furnace dry dedusting dense phase pneumatic conveying system |
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| CN106108108A (en) * | 2016-07-01 | 2016-11-16 | 云南中烟工业有限责任公司 | Tobacco shred malleation dense phase pneumatic conveying system |
| CN108639592A (en) * | 2018-04-27 | 2018-10-12 | 中冶京诚工程技术有限公司 | The defeated grey method and system of the anti-blocking fluidisation of float-valve type for deduster |
| CN110239960A (en) * | 2019-05-23 | 2019-09-17 | 成都瑞柯林工程技术有限公司 | Unloading valve group unloads grey method and powder fluidization system |
| CN110683226A (en) * | 2019-11-02 | 2020-01-14 | 江苏崇畅机械有限公司 | Environment-friendly ash can |
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- 2013-08-07 CN CN201320481028.2U patent/CN203428534U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106108108A (en) * | 2016-07-01 | 2016-11-16 | 云南中烟工业有限责任公司 | Tobacco shred malleation dense phase pneumatic conveying system |
| CN106108108B (en) * | 2016-07-01 | 2019-03-29 | 云南中烟工业有限责任公司 | Pipe tobacco positive pressure dense phase pneumatic conveying system |
| CN108639592A (en) * | 2018-04-27 | 2018-10-12 | 中冶京诚工程技术有限公司 | The defeated grey method and system of the anti-blocking fluidisation of float-valve type for deduster |
| CN108639592B (en) * | 2018-04-27 | 2023-10-03 | 中冶京诚工程技术有限公司 | Floating valve type anti-blocking fluidization ash conveying method and system for dust remover |
| CN110239960A (en) * | 2019-05-23 | 2019-09-17 | 成都瑞柯林工程技术有限公司 | Unloading valve group unloads grey method and powder fluidization system |
| CN110683226A (en) * | 2019-11-02 | 2020-01-14 | 江苏崇畅机械有限公司 | Environment-friendly ash can |
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