CN205240747U - Powder pressurization conveyor - Google Patents
Powder pressurization conveyor Download PDFInfo
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- CN205240747U CN205240747U CN201520919846.5U CN201520919846U CN205240747U CN 205240747 U CN205240747 U CN 205240747U CN 201520919846 U CN201520919846 U CN 201520919846U CN 205240747 U CN205240747 U CN 205240747U
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Abstract
The utility model discloses a powder pressurization conveyor, including sending out material jar and buffer tank, the bottom of sending out the material jar is equipped with the discharge gate, the buffer tank includes the casing and establishes gas distributor base in the casing, gas distributor base's outward flange with the inner wall fixed connection of casing, thus will cavity in the casing divide into and being located the gaseous cavity of distributor below with be located the fluidization cavity of distributor top, be equipped with on the casing of gaseous cavity and be used for doing the fluidization cavity provides the fluidization gas entry of fluidization gas, the fluidization cavity is connected send out the discharge gate of material tank bottoms portion, be used for receiving and come from send out the powder of material jar and see the powder after the fluidization off through the pipeline. The utility model discloses a conveyor has improved current device powder and has carried discontinuous, unstability and flow and the big operating mode of pressure oscillation, maintains powder conveyor's long period steady operation.
Description
Technical field
The utility model relates to powder transportation art, relates in particular to a kind of powder with voltage stabilizing buffer unitMaterial pressure conveyer device, this device is particularly suited for the close of dry pulverized coal and carries mutually.
Background technology
In recent years, domestic more and more to the research of powder Pneumatic Conveying Technology, especially Coal Chemical IndustryIndustry develop and install maximization rapidly, a lot of scientific research institutions have all started dry pulverized coal close mutually defeated, there is various Pneumatic Conveying Technology and device, wherein research direction in the research of feed techniqueMaximum by powder by normal pressure tank through stage variable pressure tank is transported to pressure pan exactly, more straight by pressure panReceive and send to nozzle.
But the feed mode that this high pressure sending cans are directly communicated with nozzle by pipeline is difficult to reallyProtecting the steady and continuous of powder carries.
Patent CN1376761A discloses a kind of coal dust feeding style, wherein also mention at high Hair FixerMaterial pipe adopts rotatory feeder valve device to carry out coal dust conveying, but adopts this have valve and spiralThe conveying device of the mechanical gyro units such as dispenser, and be unfavorable for that the powder under high pressure operating mode is steady continuouslyFixed conveying.
Patent CN2808837Y discloses a kind of coal dust feeding style equally, and use by down-comer,The bent tube type powder surge tank of horizontal tube and tedge composition, system has been equipped on powder surge tankLoosening device is to prevent line clogging, but this is equipped with the bent tube type buffer unit structure complexity of loosening device,And increased powder delivered length, increased pressure loss, particularly this simple pipeline is slowPunching effect is also not obvious.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of powder pressurization defeatedSend device, thereby carry the powder of continous-stable for downstream unit.
For achieving the above object, the utility model is by the following technical solutions:
A kind of powder pressure conveyer device, comprises issuance of materials tank and surge tank, the bottom of described issuance of materials tankBe provided with discharging opening, described surge tank comprises housing and is located at the gas distribution grid in described housing,The outward flange of described gas distribution grid is fixedly connected with the inwall of described housing, thereby by described housingIn cavity be divided into and be positioned at the gas cavity of described distributor below and be positioned at described distributor topFluidisation cavity, the housing of described gas cavity is provided with and is used to described fluidisation cavity that fluidized gas is providedFluidized gas entrance, described fluidisation cavity connects the discharging opening of described issuance of materials pot bottom, for receiveSend by pipeline from the powder of described issuance of materials tank and by the powder after fluidisation.
According to conveying device of the present utility model, preferably, the housing of described surge tank is spherical in shape,Described gas distribution grid is the recessed concave spherical to described lower housing portion.
According to conveying device of the present utility model, preferably, described in the width of described gas cavity isThe 1/16-1/4 of housing height; The more preferably 1/16-3/16 of spherical shell height.
According to conveying device of the present utility model, preferably, the width of described gas cavity bottom is largeIn the width on gas cavity top.
According to conveying device of the present utility model, preferably, described gas distribution grid and described housingThe height of the portion that is fixedly connected be the 1/4-1/2 of described housing height; More preferably described housingThe 1/3-1/2 of height.
According to conveying device of the present utility model, preferably, described discharging opening is tapered, describedThe inner side of the tapered sidewalls of discharging opening is provided with the air distribution plate of taper, and the sidewall of described discharging opening is provided withAir inlet, the gas of described air distribution plate for distributing and being introduced by described air inlet.
According to conveying device of the present utility model, preferably, described conveying device also comprise coal bunker withAnd be connected in the first lock hopper and the second lock hopper between described coal bunker and issuance of materials tank; The end of described coal bunkerPortion is provided with two taper coal outlets, and described two taper coal outlets are connected to first by pipeline respectivelyLock hopper and the second lock hopper, the outlet at bottom of described the first lock hopper and the second lock hopper is connected to by pipelineDescribed issuance of materials tank; Wherein, the connecting pipe between described coal bunker and the first lock hopper, described coal bunker withConnecting pipe between connecting pipe between the second lock hopper and described the first lock hopper and issuance of materials tank,In connecting pipe between the second lock hopper and issuance of materials tank, be equipped with control valve, described the first lock hopper andIn two lock hoppers, be equipped with lock hopper pressurising pipeline and lock hopper blowdown line.
According to conveying device of the present utility model, preferably, the bottom of described issuance of materials tank is furnished with 2-8Individual, the preferably discharging opening of 3-6 taper.
According to conveying device of the present utility model, preferably, described issuance of materials tank also comprises that issuance of materials tank fillsPressure pipeline, issuance of materials tank blowdown line and powder filter, described issuance of materials tank pressurising pipeline and issuance of materials tankBlowdown line is connected to one end of described powder filter jointly, the other end of described powder filterBe connected to the top of described issuance of materials tank.
Compared with prior art, powder pressure conveyer device of the present utility model is in sending cans downstreamPowder delivering pipe is provided with surge tank on road, because this surge tank has more much bigger than same length pipelineVolume, can cushion and eliminate in pipeline because pressure and the powder flow system causing that fluctuates is pressedPower and flow unstable, has obvious voltage stabilizing and cushioning effect, and powder is by quilt after surge tankThe stable downstream section that is delivered to, such as going to jet combustion; In addition, in order to prevent that powder is slowThe bottom deposition of rushing tank arranges gas distribution grid in surge tank, and under described gas distribution gridSquare tube enters fluidized gas, the multiple action that there is fluidisation powder, carry powder, voltage stabilizing cushions, effectivelySolve the deposition problems that powder is carried.
Brief description of the drawings
Fig. 1 is the schematic diagram of conveying device of the present utility model;
Fig. 2 is the structural representation of surge tank in Fig. 1;
Fig. 3 is the schematic diagram of a kind of embodiment of the feed arrangement of described issuance of materials tank.
Detailed description of the invention
Below taking coal dust conveying as example, and by reference to the accompanying drawings the utility model is described, but this realityBe not limited in this with novel.
As depicted in figs. 1 and 2, conveying device of the present utility model comprises issuance of materials tank 1 and surge tank 2,The bottom of described issuance of materials tank 1 is provided with discharging opening 4, and described surge tank 2 comprises housing 21 and is located atGas distribution grid 22 in described housing 21, the outward flange of described gas distribution grid 22 and described shellThe inwall of body 21 is fixedly connected with, and such as welding, thereby the cavity in described housing 21 is divided into twoPart: the gas cavity 23 and the fluidisation that is positioned at described distributor top that are positioned at described distributor belowCavity 24. The housing 21 of described gas cavity 23 is provided with fluidized gas entrance, and described fluidized gas entersMouth is connected with source of the gas by pipeline, thereby fluidized gas is introduced to described gas cavity 23, described source of the gasCan be carbon dioxide air source or source nitrogen etc. Described fluidisation cavity 24 is by pipeline and described dischargingMouth 4 connects to receive the coal dust from described issuance of materials tank 1, and the coal dust after fluidisation is passed through to pipelineBe sent to next workshop section.
Described gas distribution grid 22 can be selected any structure that can make gas uniform distribute, for exampleCan adopt bubble cap structure, microwell plate structure, float-valve type structure etc. In one embodiment, instituteState gas distribution grid 22 for microwell plate structure, its percent opening is 0.6, and aperture is 1-3mm.
When coal dust is carried, due to issuance of materials tank 1 and the pressure reduction in downstream, coal dust under the drive of air-flow fromThe discharging opening 4 of sending cans 1 enters the fluidisation cavity 24 of surge tank 2 through pipeline. Fluidized gas is through pipelineEnter described gas cavity 23 from the fluidized gas entrance of described surge tank 2, through gas distribution grid 22After being uniformly distributed, enter in described fluidisation cavity 24, fully mix and fluidisation with coal dust, and introduceCarrier gas can also further stablize described surge tank 2 internal pressures. After voltage stabilizing and abundant fluidisationThe mixture one of coal dust and gas trips out surge tank 2 and enters next workshop section through pipeline, such as enteringGasification furnace.
For effect is carried in the voltage stabilizing that further improves powder, preferably, by described surge tank 2Housing 21 is made as spherical, and described gas distribution grid 22 is concave spherical, makes to enter described fluidisation skyThe fluidized gas in chamber 24 has the fluidisation direction of the concave spherical based on gas distribution grid 22, Jin ErThe interior enhancing fluid effect of spherical housing 21.
Equally, select suitable position that gas described in described gas distribution grid 22 and reasonable distribution is installedThe relative size of body cavity 23 carries effect also very important for the voltage stabilizing that improves described surge tank 2,Described gas cavity 23 is too small, can cause gas to be difficult to the gas distribution grid 22 by concave sphericalBe uniformly distributed; Described gas cavity 23 is excessive, can cause the fluidisation space of powder less, is unfavorable forThe voltage stabilizing of powder is carried. In the utility model, preferably, the width of described gas cavity 23 (Spacing between the housing 21 of described gas distribution grid 22 and its below) be spherical shell 21 heightThe 1/16-1/4 of (be between housing inner top and bottom distance) in vertical direction, further excellentSelection of land is the 1/16-3/16 of spherical shell 21 height. In addition, at the gas distribution grid of concave sphericalIn 22 fluidisation direction, for guaranteeing that powder can not accumulate because of gravitational settling, preferably, gas cavityThe width design of 23 bottoms is greater than the width on gas cavity 23 tops, forms one approximate " bent moon "The gas cavity 23 of shape.
Preferably, described gas distribution grid 22 (is connected with the height of the link position of housing 21Distance between position and housing bottom) be the 1/4-1/2 of described housing height, further preferablyFor the 1/3-1/2 of described housing height, carry with the sulfuration that is more conducive to material in surge tank.
Top at described surge tank 2 can further arrange Pressure gauge, monitors described surge tank 2In force value.
For controlling the bottom inflow amount of surge tank 2, avoid in surge tank 2 pressure oscillation of self,Control valve 7 and limited flow orifice plate 9 are set respectively on the pipeline that is connected to described fluidized gas entrance,To ensure the fully stable of carrier gas self.
Preferably, described discharging opening 4 is tapered, for preventing that coal dust from stopping up, at the cone of discharging opening 4Shape sidewall is provided with air inlet, and described air inlet is connected to source of the gas by pipeline, and described source of the gas is passableThe source of the gas identical with the source of the gas that is connected to described fluidized gas entrance. At the tapered sidewalls of discharging opening 4Inner side the air distribution plate 5 of taper is set, make the gas of introducing from described air inlet by described cloth windAfter plate 5 distributes, can make the coal dust at described discharging opening 4 places become flexible or fluidisation, and then pass through smoothlyDescribed discharging opening 4.
On the pipeline that is connected to described air inlet, control valve 6 can be set, so that the amount of gas is carried outControl.
In one embodiment, the lower disposed of sending cans 1 has the discharging opening 4 of multiple tapers, thanAs 2-8 or 3-6, its concrete arrangement is well known to those skilled in the art, such as inciting somebody to actionMultiple discharging openings are arranged side by side.
Be provided with issuance of materials tank pressurising pipeline 14 and issuance of materials tank blowdown line 15 at the top of sending cans 1,On issuance of materials tank pressurising pipeline 14, be provided with pressurising valve 18, on issuance of materials tank blowdown line 15, arrangeThere is pressure relief valve 17, send out by common adjusting of interaction of pressure relief valve 17 and pressurising valve 18The pressure of tank sending 1. Described issuance of materials tank pressurising pipeline 14 is connected jointly with issuance of materials tank blowdown line 15To one end of powder material filter 24, the other end of described coal fine filter 24 is through pipeline and describedThe top of batch can 1 connects. When pressure release, pressurising valve 18 is closed, and pressure relief valve 17 is opened, mistakeAfter filter, gas is discharged to atmosphere; When pressurising, pressure relief valve 17 is closed, and pressurising valve 18 is opened air inletPressurising. When this set makes sending cans 1 pressure release, pulverized-coal filtering can be stayed in sending cans 1, be filledWhen pressure, pressurized gas can also be carried out backwash to described powder material filter 24.
The coal dust of sending cans 1 is sent in sending cans 1 by connector 19. As shown in Figure 3,In one embodiment, conveying device of the present utility model also comprise coal bunker 33 and be connected in described inThe first lock hopper 31 between coal bunker 33 and issuance of materials tank 1 and the second lock hopper 32, described coal bunker 33 andThe first lock hopper 31 and the second lock hopper 32 also can be called the feed arrangement of described issuance of materials tank 1; DescribedThe bottom of coal bunker 33 is provided with two taper coal outlets, and described two taper coal outlets pass through respectively pipelineBe connected to the first lock hopper 31 and the second lock hopper 32, the end of described the first lock hopper 31 and the second lock hopper 32Portion's outlet is connected to described issuance of materials tank 1 by pipeline; Wherein, described coal bunker 33 and the first lock hopper 31Between connecting pipe, described coal bunker 33 and the second lock hopper 32 between connecting pipe and described inBetween connecting pipe, the second lock hopper 32 and issuance of materials tank 1 between the first lock hopper 31 and issuance of materials tank 1Connecting pipe on be equipped with control valve (not shown), to cut off or to regulate pulverized coal flow; InstituteState and in the first lock hopper 31 and the second lock hopper 32, be equipped with for the pipeline of pressurising with for the pipe of pressure releaseLine, to carry out pressurising or pressure release to described the first lock hopper 31 and the second lock hopper 32 respectively.
When operation, described the first lock hopper 31 and the second lock hopper 32 alternately pressurising pressure releases, to issuance of materials tank 1Middle coal supply. For example, when after the first lock hopper 31 pressure releases, open between the first lock hopper 31 and coal bunker 33Control valve, coal dust enters in the first lock hopper 31 under the effect of gravity, closes this control valve, rightThe first lock hopper 31 is pressurized to a little more than the pressure in issuance of materials tank 1, open the first lock hopper 31 withControl valve (now the control valve between the second lock hopper 32 and issuance of materials tank 1 is closed) between issuance of materials tank 1,Coal dust enters in issuance of materials tank 1, closes the control valve between the first lock hopper 31 and issuance of materials tank 1 after completing,The first lock hopper 31 is carried out to pressure release, so replace. According to the transmission load of sending cans 1, control theThe continuous feeding amount of one lock hopper 31 and the second lock hopper 32, can control sending cans 1 in whole productionIn process, remain suitable material level, can ensure the stability of production process.
On the tank skin of described sending cans 1, Pressure gauge, level-sensing device etc. can also be set, to sending cans 1Interior material level and pressure are monitored.
Preferably, described air inlet and fluidized gas entrance are connected to same source of the gas by carrier gas line 8.In view of the importance of this source of the gas, in described carrier gas line 8, gas filtering dryer 3 is set, by gasImpurity in body and moisture removal, avoid stopping up air distribution plate 5 and gas distribution grid 22.
The utility model can be realized multiple branch circuit voltage stabilizing coal dust and carry feed, is applicable to various large-scale coal dustsConveying device, is particularly applied to the dry coal powder pressure gasifying device of Coal Chemical Industry industry, existing to improveThere is coal dust in device to carry discontinuous, unstable and flow and the large situation of pressure oscillation, safeguardThe long-period stable operation of pulverized coal conveying device.
Claims (10)
1. a powder pressure conveyer device, comprises issuance of materials tank and surge tank, the end of described issuance of materials tankPortion is provided with discharging opening, and described surge tank comprises housing and be located at the gas distribution grid in described housing,The outward flange of described gas distribution grid is fixedly connected with the inwall of described housing, thereby by described housingIn cavity be divided into and be positioned at the gas cavity of described distributor below and be positioned at described distributor topFluidisation cavity, the housing of described gas cavity is provided with and is used to described fluidisation cavity that fluidized gas is providedFluidized gas entrance, described fluidisation cavity connects the discharging opening of described issuance of materials pot bottom, for receiveSend by pipeline from the powder of described issuance of materials tank and by the powder after fluidisation.
2. conveying device as claimed in claim 1, is characterized in that, the housing of described surge tankSpherical in shape, described gas distribution grid is the recessed concave spherical to described lower housing portion.
3. conveying device as claimed in claim 2, is characterized in that, described gas cavity wideDegree is the 1/16-1/4 of described housing height.
4. conveying device as claimed in claim 3, is characterized in that, described gas cavity bottomWidth be greater than the width on gas cavity top.
5. conveying device as claimed in claim 3, is characterized in that, described gas distribution grid withThe height of the portion that is fixedly connected with of described housing is the 1/4-1/2 of described housing height.
6. the conveying device as described in any one in claim 1 to 5, is characterized in that, described inDischarging opening is tapered, is provided with the air distribution plate of taper in the inner side of the tapered sidewalls of described discharging opening, instituteThe sidewall of stating discharging opening is provided with air inlet, and described air distribution plate is introduced by described air inlet for distributingGas.
7. conveying device as claimed in claim 1, is characterized in that, described conveying device is also wrappedDraw together coal bunker and be connected in described coal bunker and issuance of materials tank between the first lock hopper and the second lock hopper; DescribedThe bottom of coal bunker is provided with two taper coal outlets, and described two taper coal outlets connect by pipeline respectivelyBe connected to the first lock hopper and the second lock hopper, the outlet at bottom of described the first lock hopper and the second lock hopper is by pipeRoad is connected to described issuance of materials tank; Wherein, the connecting pipe between described coal bunker and the first lock hopper, instituteState the company between connecting pipe and described the first lock hopper and the issuance of materials tank between coal bunker and the second lock hopperTake in the connecting pipe between road, the second lock hopper and issuance of materials tank and be equipped with control valve, described firstIn lock hopper and the second lock hopper, be equipped with lock hopper pressurising pipeline and lock hopper blowdown line.
8. conveying device as claimed in claim 1, is characterized in that, the bottom of described issuance of materials tankBe furnished with the discharging opening of 2-8 taper.
9. conveying device as claimed in claim 8, is characterized in that, the bottom of described issuance of materials tankBe furnished with the discharging opening of 3-6 taper.
10. conveying device as claimed in claim 1, is characterized in that, described issuance of materials tank also wrapsDraw together issuance of materials tank pressurising pipeline, issuance of materials tank blowdown line and powder filter, described issuance of materials tank pressurising pipeLine and issuance of materials tank blowdown line are connected to one end of described powder filter jointly, and described powder filtersThe other end of device is connected to the top of described issuance of materials tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919846.5U CN205240747U (en) | 2015-11-18 | 2015-11-18 | Powder pressurization conveyor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520919846.5U CN205240747U (en) | 2015-11-18 | 2015-11-18 | Powder pressurization conveyor |
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| CN205240747U true CN205240747U (en) | 2016-05-18 |
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| CN201520919846.5U Active CN205240747U (en) | 2015-11-18 | 2015-11-18 | Powder pressurization conveyor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253631A (en) * | 2015-11-18 | 2016-01-20 | 神华集团有限责任公司 | Powder pressurized conveying device |
| CN113028838A (en) * | 2019-12-24 | 2021-06-25 | 中核建中核燃料元件有限公司 | Combined type airflow injection device suitable for powder materials |
-
2015
- 2015-11-18 CN CN201520919846.5U patent/CN205240747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253631A (en) * | 2015-11-18 | 2016-01-20 | 神华集团有限责任公司 | Powder pressurized conveying device |
| CN113028838A (en) * | 2019-12-24 | 2021-06-25 | 中核建中核燃料元件有限公司 | Combined type airflow injection device suitable for powder materials |
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