CN211418287U - Coal powder bin provided with discharging and weighing device and feeding fluidization system - Google Patents
Coal powder bin provided with discharging and weighing device and feeding fluidization system Download PDFInfo
- Publication number
- CN211418287U CN211418287U CN201922130851.9U CN201922130851U CN211418287U CN 211418287 U CN211418287 U CN 211418287U CN 201922130851 U CN201922130851 U CN 201922130851U CN 211418287 U CN211418287 U CN 211418287U
- Authority
- CN
- China
- Prior art keywords
- valve
- coal powder
- pipe
- compressed air
- weighing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The utility model relates to a coal powder bin provided with a discharging and weighing device and a feeding fluidization system, which comprises a coal powder bin, an annular blowing air supply device, a fluidization device and a powder weighing device; an annular blowing air supply device and an inlet pipeline are arranged on a conical hopper at the bottom of the pulverized coal bin; the coal powder discharge port is sequentially connected with a pneumatic gate valve, a first electric cut-off sealing valve, a fluidizing device, a second electric cut-off sealing valve and a powder weighing device, and the coal powder discharge port is connected with the pneumatic gate valve, the pneumatic gate valve is connected with the first electric cut-off sealing valve, the first electric cut-off sealing valve is connected with the fluidizing device and the second electric cut-off sealing valve through flanges; the inlet pipeline is used as a passage for nitrogen injection and manual treatment of large blocks. The utility model discloses can solve the buggy and store in the storehouse, arrange the material, carry and weigh the in-process and easily take place to block up, fluidization nature is not good, produce vortex feed back and buggy and weigh inaccurately, can not provide the problem of fuel to lime shaft kiln combustion system is stable.
Description
Technical Field
The utility model relates to a large-scale lime shaft kiln buggy is carried and feed technical field especially relates to a configuration is arranged and is expected pulverized coal storehouse with weighing device and feeding fluidization system.
Background
When pulverized coal is used as fuel in a combustion system of the lime shaft kiln, a pulverized coal bin is required to be used as an intermediate storage tool, the supply amount of the pulverized coal is controlled by a pulverized coal weighing device, and the weighed pulverized coal is supplied to a plurality of uniformly distributed burners of the combustion system in an equivalent amount by the pulverized coal weighing device, so that the lime in each part of the lime shaft kiln is uniformly burnt, and the phenomena of overburning and unburning of quick lime are avoided or reduced.
The connection structure between the coal powder bin and the coal powder weighing device which are commonly used at present has the following defects: firstly, due to the frequent occurrence of the conditions that the fluidization performance of the lower part in the bin body is poor and the flow of the pulverized coal in a pipeline system is unstable, the normal work of a pulverized coal weighing device is influenced, the stable and uniform supply of the pulverized coal in a combustion system of a lime shaft kiln is further influenced, and the quality stability of a lime finished product is finally influenced; in addition, the inflammability of the coal powder material makes the requirements on the safety of the bin and the conveying high, the potential safety hazards such as coal powder deflagration and the like are easily generated in the temperature, the sealing and the flowing process of the common coal powder bin and the conveying, and once the coal powder deflagration accident occurs, the consequence is unreasonable. It is necessary to provide a system that changes the fluidization capacity and is safe and reliable when transporting pulverized coal.
Disclosure of Invention
The utility model provides a configuration is arranged material and is expected coal dust storehouse of weighing device and feeding fluidization system, can solve the buggy and store in the storehouse, arrange the material, carry and weigh the in-process and easily take place to block up, the fluidization nature is not good, it is inaccurate to produce vortex feed back and buggy and weigh, can not stably provide the problem of fuel to lime shaft kiln combustion system, satisfy lime shaft kiln combustion system's technological requirement, improve the off-the-shelf homogeneity situation of being heated of kiln thorax material, be favorable to reducing the finished product quality and fluctuate, improve the finished product quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a coal powder bin provided with a discharging and weighing device and a feeding fluidization system comprises a coal powder bin, wherein the lower part of the coal powder bin is provided with a conical hopper, and the bottom of the conical hopper is a coal powder discharging hole; the device also comprises an annular blowing air supply device, a fluidizing device and a powder weighing device; the conical hopper is provided with an annular blowing air supply device and an inlet pipeline; the coal powder discharge port is sequentially connected with a pneumatic gate valve, a first electric cut-off sealing valve, a fluidizing device, a second electric cut-off sealing valve and a powder weighing device, and the coal powder discharge port is connected with the pneumatic gate valve, the pneumatic gate valve is connected with the first electric cut-off sealing valve, the first electric cut-off sealing valve is connected with the fluidizing device and the second electric cut-off sealing valve through flanges; the inlet pipeline is used as a passage for nitrogen injection and manual treatment of large blocks.
The included angle between the side wall of the conical hopper and the horizontal plane is more than or equal to 70 degrees, a material level meter is arranged at the upper part of the conical hopper, and an annular blowing air supply device is arranged at the lower part of the conical hopper.
The annular blowing air supply device is an annular double-layer blowing air supply device and comprises a compressed air ring pipe, an upper-layer connecting rubber pipe, a lower-layer connecting rubber pipe, an upper-layer nozzle and a lower-layer nozzle; the lower part of the conical hopper is provided with an upper layer nozzle and a lower layer nozzle, and the upper layer nozzle and the lower layer nozzle are respectively composed of a plurality of compressed air nozzles which are uniformly arranged on a wall plate of the conical hopper along the annular direction; the periphery of the conical hopper is provided with a compressed air ring pipe, the upper-layer nozzles are communicated with the compressed air ring pipe through corresponding upper-layer connecting rubber pipes, and the lower-layer nozzles are communicated with the compressed air ring pipe through corresponding lower-layer connecting rubber pipes; the air inlet end of the compressed air loop pipe is connected with an external compressed air conveying pipeline.
The corresponding interfaces of the upper layer nozzle and the upper layer connecting rubber pipe and the corresponding interfaces of the lower layer nozzle and the lower layer connecting rubber pipe are respectively connected through a hexagonal joint and a rubber pipe joint, and a copper gasket is arranged between the hexagonal joint and the wall plate of the conical hopper; the compressed air ring pipe is connected with the corresponding interface of the upper layer connecting rubber pipe or the corresponding interface of the lower layer connecting rubber pipe through a hoop, a pipe joint and a rubber pipe union joint respectively.
An inlet pipeline is arranged at the bottom of the conical hopper close to the pulverized coal discharge port, the middle part of the inlet pipeline is connected with an external nitrogen conveying pipeline through a one-way throttle valve, and the one-way throttle valve is connected with the inlet pipeline through a connecting union joint; the outer end of the inlet pipeline is provided with a stop valve which is connected with the inlet pipeline through a connecting flange; the stop valve is provided with a valve on-off detection switch, the valve on-off detection switch and the one-way throttle valve are respectively connected with the control system, and the stop valve is a manual stop valve.
A connecting flange is arranged between the pulverized coal discharge port and the pneumatic gate valve, a temperature measuring device is arranged on one side of the connecting flange, and the temperature measuring device is controlled by a control system and a nitrogen switch valve on a nitrogen conveying pipeline in an interlocking mode.
The fluidization device consists of an inlet flange, an upper shell, an upper diversion cone, a lower shell and an outlet flange which are sequentially arranged from top to bottom, the upper shell and the lower shell are flexibly connected through an anti-static acupuncture filter felt, and the anti-static acupuncture filter felt is fixed with the upper shell or the lower shell through a roar hoop; a low-resistance conductive connecting copper sheet is arranged between the upper shell and the lower shell; the upper diversion cone is a conical cylinder with a large upper part and a small lower part, the lower diversion cone is an X-shaped cylinder with a narrowed middle part, and the lower end of the upper diversion cone extends to the middle part of the lower diversion cone; a compressed air injection pipe is arranged in the upper shell and is connected with an external compressed air conveying pipeline; the injection direction of the compressed air injection pipe faces to the lower discharge hole of the upper diversion cone.
And 2 flange plates connected by the flange are connected by copper sheets.
And the discharge hole of the second electric cut-off sealing valve is connected with the powder weighing device through a pulverized coal guide pipe, and the pulverized coal guide pipe is connected with the discharge hole of the second electric cut-off sealing valve through a flange.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the bottom hopper of the coal powder bin adopts a conical hopper with an internal angle of 70 degrees, an annular blowing air supply system is arranged on the conical hopper, the inclination of the conical hopper is favorable for powder flowing and discharging, the annular blowing air supply system blows compressed air when powder is blocked so that the material is smoothly discharged out of the bin body, annular and double-layer blowing enables the blowing control area to be wide, and the blowing effect is more uniform and effective; the conical hopper is also provided with a nitrogen gas supply system capable of adjusting the flow, and nitrogen gas can be sprayed into the bin body after a valve on-off detection switch sends a signal, so that the potential safety hazards of spontaneous combustion and explosion of pulverized coal are eliminated;
2) the utility model discloses a fluidizer comprises upper and lower two parts toper material water conservancy diversion structure, this kind of structure can avoid the buggy to store in the storehouse, arrange the material, carry and weigh the in-process and take place to block up, or the fluidization is not good, the easy circumstances that produces the buggy that the vortex feed back leads to weighs inaccurately, can not stably provide the fuel takes place, satisfy the technological requirement that stably provides the fuel to the kiln thorax nozzle, improve the finished product of kiln thorax material uniformity situation of being heated, reduce finished product quality fluctuation, improve lime activity, reduce the unburnt, overburning problem, improve the finished product quality; the upper part of the fluidizing device is provided with a compressed air conduit and a nozzle for leading in external compressed air, the compressed air conduit is arranged along the material flowing direction, and the jet orifice is aligned with the lower discharge hole of the upper diversion cone to prevent the material from being blocked and facilitate the material flowing;
3) the upper part and the lower part of the fluidization device are connected through low-resistance conductive connecting copper sheets, static electricity can be prevented, the upper shell and the lower shell are flexibly connected through the static electricity-proof acupuncture filter felt, static electricity can be prevented, and deformation stress generated by factors such as internal and external temperature change, vibration, size error generated during manufacturing and the like can be offset, so that the weighing precision of the pulverized coal weighing device is ensured;
3) the inlet pipeline of toper hopper lower part is used for the manual work to handle the bulky material, and this department has set up manual stop valve, when the manual storehouse of dealing with of this valve was handled to needs was opened to this valve in the problem of arranging the material, valve break-make detection switch sends the signal to control system, and entire system shut down prevents to take place danger, guarantee operating personnel's safety.
4) After the fluidization of the powder entering the coal powder weighing device is greatly improved, the weighing accuracy and stability of the coal powder weighing device are improved, the accuracy of the coal powder quantity provided for the lime shaft kiln burner is improved, the sintering uniformity of limestone in the kiln chamber is improved, and the phenomena of raw sintering and over-sintering are reduced.
5) Three valves are arranged between the pulverized coal bin and the pulverized coal weighing device, one is a pneumatic valve, and the other two are electric valves.
Drawings
Fig. 1 is a front view of a pulverized coal bunker equipped with a discharging and weighing device and a feeding fluidization system according to the present invention.
Fig. 2 is a schematic structural diagram of the conical hopper of the present invention.
Fig. 3 is a top view of fig. 2.
FIG. 4 is a schematic view of the connection relationship between the upper layer connecting rubber tube, the compressed air ring tube and the upper layer nozzle.
FIG. 5 is a schematic view of the connection relationship between the lower layer connection rubber tube and the compressed air ring tube and the lower layer nozzle.
Fig. 6 is an enlarged view of a portion i in fig. 2.
Fig. 7 is a view from direction a in fig. 6.
Fig. 8 is a schematic structural diagram of the first coupling flange according to the present invention.
Fig. 9 is a schematic structural view of the fluidizing device of the present invention.
Fig. 10 is a top view of fig. 9.
In the figure: 1. the device comprises a conical hopper 1-1, a pulverized coal discharge port 1-2, a wall plate 2, a level indicator 3, an annular blowing air supply device 3-1, a compressed air ring pipe 3-2, a lower layer connecting rubber pipe 3-3, a hoop 3-4, a pipe joint 3-5, a rubber pipe union 3-6, an upper layer connecting rubber pipe 3-7, a rubber pipe joint 3-8, a hexagonal joint 3-9, a copper gasket 3-10, a compressed air nozzle 4, a flange connecting structure I5, a connecting flange 5-1, a flange body 5-2, a top flange 5-3, a bottom flange 5-4, a temperature measuring device pipe 5-5, a temperature measuring device interface 6, a pneumatic gate valve 7, a flange connecting structure II 8, an electric cutting sealing valve I9, a flange connecting structure III 10, a fluidizing device 10, a material and a material 1. 10-2 parts of an inlet flange, 10-3 parts of an upper shell, 10-4 parts of an upper flow guide cone, 10-5 parts of a lower flow guide cone, 10-6 parts of a lower shell, 10-7 parts of an outlet flange, 10-8 parts of a compressed air injection pipe, 10-9 parts of a compressed air conveying pipeline, 10-10 parts of a low-resistance conductive connecting copper sheet, 10-11 parts of an anti-static needle-punched filter felt, 10-11 parts of a roar hoop, 11 parts of a flange connecting structure, four 12 parts of an electric cutting sealing valve, 13 parts of a flange connecting structure, five 14 parts of a pulverized coal guide pipe, 15 parts of a pulverized coal weighing device, 16 parts of an inlet pipeline, 16-1 parts of a steel pipe, 16-2 parts of a connecting movable joint, 16-3 parts of a one-way throttling.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the coal powder bunker equipped with a discharging and weighing device and a feeding fluidization system of the present invention comprises a coal powder bunker, wherein a conical hopper 1 is arranged at the lower part of the coal powder bunker, and the bottom of the conical hopper 1 is a coal powder discharge port 1-1; the device also comprises an annular blowing air supply device 3, a fluidizing device 10 and a powder weighing device 15; the conical hopper 1 is provided with an annular blowing air supply device 3 and an inlet pipeline 16; the coal powder discharge port 1-1 is sequentially connected with a pneumatic gate valve 6, a first electric cut-off sealing valve 8, a fluidizing device 10, a second electric cut-off sealing valve 12 and a powder weighing device 15, and the coal powder discharge port 1-1 is connected with the pneumatic gate valve 6, the pneumatic gate valve 6 is connected with the first electric cut-off sealing valve 8, the first electric cut-off sealing valve 8 is connected with the fluidizing device 10, and the fluidizing device 10 is connected with the second electric cut-off sealing valve 12 through flanges; the inlet pipe 16 serves as a passage for nitrogen injection and manual handling of bulk material.
The included angle between the side wall of the conical hopper 1 and the horizontal plane is more than or equal to 70 degrees, a material level meter 2 is arranged at the upper part of the conical hopper 1, and an annular blowing air supply device 3 is arranged at the lower part of the conical hopper 1.
The annular blowing air supply device 3 is an annular double-layer blowing air supply device and comprises a compressed air ring pipe 3-1, an upper-layer connecting rubber pipe 3-6, a lower-layer connecting rubber pipe 3-2, an upper-layer nozzle and a lower-layer nozzle; the lower part of the conical hopper 1 is provided with an upper layer nozzle and a lower layer nozzle, and the upper layer nozzle and the lower layer nozzle are respectively composed of a plurality of compressed air nozzles 3-10 which are uniformly arranged on a wall plate 1-2 of the conical hopper 1 along the annular direction; a compressed air ring pipe 3-1 is arranged at the periphery of the conical hopper 1, the upper layer nozzles are communicated with the compressed air ring pipe 3-1 through corresponding upper layer connecting rubber pipes 3-6, and the lower layer nozzles are communicated with the compressed air ring pipe 3-1 through corresponding lower layer connecting rubber pipes 3-2; the inlet end of the compressed air loop 3-1 is connected to an external compressed air delivery pipe.
The corresponding interfaces of the upper-layer nozzle and the upper-layer connecting rubber pipe 3-6 and the corresponding interfaces of the lower-layer nozzle and the lower-layer connecting rubber pipe 3-2 are respectively connected through a hexagonal joint 3-8 and a rubber pipe joint 3-7, and a copper gasket 3-9 is arranged between the hexagonal joint 3-8 and a wall plate 1-2 of the conical hopper 1; the compressed air ring pipe 3-1 is connected with a corresponding interface of an upper layer connecting rubber pipe 3-6 or a corresponding interface of a lower layer connecting rubber pipe 3-2 through a hoop 3-3, a pipe joint 3-4 and a rubber pipe union 3-5 respectively.
An inlet pipeline 16 is arranged at the bottom of the conical hopper 1 and close to a pulverized coal discharge port 1-1, the middle part of the inlet pipeline 16 is connected with an external nitrogen conveying pipeline through a one-way throttle valve 16-3, and the one-way throttle valve 16-3 is connected with the inlet pipeline 16 through a connecting slip joint 16-2; the outer end of the inlet pipeline 16 is provided with a stop valve 16-5, and the stop valve 16-5 is connected with the inlet pipeline 16 through a connecting flange 16-4; the stop valve 16-5 is provided with a valve on-off detection switch 16-6, the valve on-off detection switch 16-6 and the one-way throttle valve 16-3 are respectively connected with the control system, and the stop valve 16-5 is a manual stop valve.
A connecting flange 5 is arranged between the pulverized coal discharge port 1-1 and the pneumatic gate valve 6, a temperature measuring device is arranged on one side of the connecting flange 5, and the temperature measuring device is controlled by a control system and a nitrogen switch valve on a nitrogen conveying pipeline in an interlocking manner.
The fluidization device 10 consists of an inlet flange 10-1, an upper shell 10-2, an upper flow guide cone 10-3, a lower flow guide cone 10-4, a lower shell 10-5 and an outlet flange 10-6 which are sequentially arranged from top to bottom, the upper shell 10-2 is flexibly connected with the lower shell 10-5 through an anti-static acupuncture filter felt 10-10, and the anti-static acupuncture filter felt 10-10 is fixed with the upper shell 10-2 or the lower shell 10-5 through a roar hoop 10-11; a low-resistance conductive connecting copper sheet 10-9 is also arranged between the upper shell 10-2 and the lower shell 10-5; the upper diversion cone 10-3 is a conical cylinder with a large upper part and a small lower part, the lower diversion cone 10-4 is an X-shaped cylinder with a narrowed middle part, and the lower end of the upper diversion cone 10-3 extends to the middle part of the lower diversion cone 10-4; a compressed air injection pipe 10-7 is arranged in the upper shell 10-2, and the compressed air injection pipe 10-7 is connected with an external compressed air conveying pipeline 10-8; the injection direction of the compressed air injection pipe 10-7 faces to the lower discharge hole of the upper diversion cone 10-3.
The 2 flange plates connected by the flanges are connected by copper sheets 17.
The discharge hole of the second electric cut-off sealing valve 12 is connected with a powder weighing device 15 through a pulverized coal guide pipe 14, and the pulverized coal guide pipe 14 is connected with the discharge hole of the second electric cut-off sealing valve 12 through a flange.
The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ examples ] A method for producing a compound
In this embodiment, a coal powder bunker equipped with a discharging and weighing device and a feeding fluidization system includes a coal powder bunker, and a conical hopper 1, a level indicator 2, an annular blowing air supply device 3, an inlet pipeline 16, a coupling flange 5, a pneumatic gate valve 6, an electric cut-off sealing valve one 8, an environment-friendly and safe fluidization device 10, an electric cut-off sealing valve two 12 and a powder weighing device 15 are arranged at the bottom of the coal powder bunker.
As shown in fig. 1 and 2, the taper of the conical hopper 1 is 40 degrees, namely the material flow angle reaches 70 degrees, which is very beneficial to powder flow, and the specification of a flange at a coal powder discharge port 1-1 is DN200, PN 1.6; the material level meter 2 is interlocked with a feeding device of the pulverized coal bunker through a control system, and the material level height in the bunker body is timely adjusted according to the measurement data of the material level meter.
As shown in fig. 2-5, in the present embodiment, the annular blowing air supply device 3 is an annular double-layer blowing air supply device, and includes a compressed air circular pipe 3-1, an upper-layer connecting rubber pipe 3-6, a hoop 3-3, a pipe joint 3-4, a rubber pipe union 3-5, a lower-layer connecting rubber pipe 3-2, a rubber pipe union 3-7, a hexagonal union 3-8, a copper gasket 3-9, and a plurality of compressed air nozzles 3-10, the annular blowing air supply device 3 is not limited to a double-layer structure, and the number of layers and the number of the compressed air nozzles 3-10 are set according to the volume of the conical hopper 1 in specific application. The annular blowing air supply device 3 is arranged to prevent the material from expanding at the bottom of the conical hopper, so that a material fluidization system is more effective, and the compressed air nozzles 3-10 only blow when the pulverized coal is blocked.
As shown in figure 3, in the embodiment, the upper layer nozzle of the annular double-layer blowing air supply device is composed of 6 compressed air nozzles 3-10 uniformly distributed at intervals of 60 degrees along the circumferential direction of the conical hopper 1, the lower layer nozzle close to the pulverized coal discharge port 1-1 is composed of 4 compressed air nozzles 3-10 uniformly distributed at intervals of 90 degrees along the circumferential direction of the conical hopper 1, the design principle is that the distance between the compressed air nozzles 3-10 is kept between 350 mm and 450mm, the blowing capacity of the compressed air nozzles 3-10 is mainly considered in the effective control range for preventing expansion, and the pressure and the flow of compressed air sprayed by the compressed air nozzles 3-10 can be adjusted.
As shown in fig. 2, 6 and 7, in this embodiment, the conical hopper 1 is provided with an inlet pipe 16, the inlet pipe 16 is provided with a nitrogen inlet connected with an external nitrogen delivery pipe through a connecting union 16-2 (with a diameter of DN20) and a one-way throttle valve 16-3, the one-way throttle valve 16-3 is used for controlling the nitrogen flow, the body of the inlet pipe 16 is a steel pipe 16-1 with a diameter of DN80, the inlet pipe 16 is also used as a large lump material manual processing channel, the end part of the inlet pipe 16 is provided with a stop valve 16-5 (manual) for controlling the on-off with the outside, the stop valve 16-5 is connected with one end of the steel pipe 16-1 through a flange 16-4, the other end of the steel pipe 16-1 is fixedly connected with the conical hopper, the stop valve 16-5 is further provided with a valve on-off detection switch 16-6, when the valve on-off detection switch 16-6 detects, the valve rod of the stop valve 16-5 is in an open position), a signal is sent to the central control room through the control system, and the whole pulverized coal bunker system stops running to prevent accidents; only when the valve detection switch 16-6 detects that the stop valve 16-5 is in the closed state (as shown in fig. 7, the valve rod of the stop valve 16-5 is in the closed state), the control system sends a signal to the central control room, and the whole pulverized coal bunker system can be put into operation.
As shown in figures 1 and 8, a connecting flange 5 arranged at a pulverized coal discharge port 1-1 consists of a flange body 5-1, a top flange 5-2 and a bottom flange 5-3, wherein the top flange 5-2 is connected with a flange plate at the pulverized coal discharge port 1-1 to form a flange connecting structure I4, the bottom flange 5-3 is connected with a flange plate at the top of a pneumatic gate valve 6 to form a flange connecting structure II 7, one side of the connecting flange 5 is connected with a temperature measuring device interface 5-5 through a temperature measuring device conduit 5-4, a temperature measuring device is arranged at the temperature measuring device interface 5-5, when the temperature measuring device detects that the temperature of a material is higher than a set value, a control system opens a switch valve on a nitrogen conveying pipeline, nitrogen with certain pressure is input into a conical hopper 1, so as to avoid the dangerous condition of coal powder combustion and explosion caused by overhigh temperature in the bin body.
As shown in fig. 1, the pneumatic gate valve 6 is used for opening and closing the pulverized coal discharge port 1-1, is normally open during normal operation, and is used for temporarily closing the pulverized coal discharge port 1-1 only when the first electric cutoff sealing valve 8 fails or is overhauled.
The pneumatic gate valve 6 is connected with the electric cut-off sealing valve I8 through a flange connecting structure II 7; the first electric cutoff sealing valve 8 is connected with the fluidizing device 10 through a third flange connecting structure 9, and the first electric cutoff sealing valve 8 is used for controlling opening and closing of a feed inlet of the fluidizing device 10.
As shown in fig. 1 and fig. 9, in this embodiment, the fluidizing device 10 is composed of an upper conical material guiding structure and a lower conical material guiding structure, and the upper conical material guiding structure is composed of an upper conical material guiding structure and a lower conical material guiding structureThe inlet flange 10-1, the upper shell 10-2 and the upper diversion cone 10-3, and the lower part of the inlet flange is composed of the lower shell 10-5, the outlet flange 10-6 and the lower diversion cone 10-4. In order to avoid the phenomena of vortex and backflow generated by the materials in the conveying process, the materials are prevented from overflowing, the materials are normally conveyed in the system, and the normal operation of the subsequent powder weighing device 15 is ensured. The diameter of the lower discharge hole of the upper diversion cone 10-3 is
The diameter of the middle contraction port of the lower diversion cone 10-4 is
A compressed air injection pipe 10-7 is arranged in the upper shell 10-2, the compressed air injection pipe 10-7 is arranged along the material flowing direction, and an injection port is aligned with a lower discharge port of the upper diversion cone 10-3, so that the material is prevented from being blocked and the material flows conveniently; the upper shell 10-2 and the lower shell 10-5 of the fluidization device 10 are connected through a low-resistance conductive connecting copper sheet 10-9 to prevent static electricity, the upper shell 10-2 and the lower shell 10-5 are flexibly connected through ZLN type polyester anti-static needling filter felt, static electricity can be prevented, and displacement compensation can be performed when deformation stress is generated under the influence of factors such as internal and external temperature, vibration or manufacturing errors, so that the precision of a subsequent powder weighing device 15 cannot be influenced.
As shown in fig. 1, the powder weighing device 15 is configured to weigh pulverized coal to provide a stable flow of pulverized coal fuel to a burner inside a kiln chamber, the second electric cutoff sealing valve 12 is configured to control a feeding port of the powder weighing device 15, the powder weighing device 15 is provided with a sealed weighing tank, the second electric cutoff sealing valve 12 is connected to the sealed weighing tank through a pulverized coal guide pipe 14, the pulverized coal guide pipe 14 is connected to the second electric cutoff sealing valve 12 through a flange connection structure five 13, and before the second electric cutoff sealing valve 12 is closed, the first electric cutoff sealing valve 8 needs to be closed.
As shown in figure 1, the utility model discloses in, all adopt flange sealing connection between each functional unit between buggy storehouse to the powder weighing device 15, guarantee that overall system structure is tight, can not reveal the material.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. A coal powder bin provided with a discharging and weighing device and a feeding fluidization system comprises a coal powder bin, wherein the lower part of the coal powder bin is provided with a conical hopper, and the bottom of the conical hopper is a coal powder discharging hole; it is characterized by also comprising an annular blowing air supply device, a fluidizing device and a powder weighing device; the conical hopper is provided with an annular blowing air supply device and an inlet pipeline; the coal powder discharge port is sequentially connected with a pneumatic gate valve, a first electric cut-off sealing valve, a fluidizing device, a second electric cut-off sealing valve and a powder weighing device, and the coal powder discharge port is connected with the pneumatic gate valve, the pneumatic gate valve is connected with the first electric cut-off sealing valve, the first electric cut-off sealing valve is connected with the fluidizing device and the second electric cut-off sealing valve through flanges; the inlet pipeline is used as a passage for nitrogen injection and manual treatment of large blocks.
2. The coal powder bunker of claim 1, wherein the angle between the side wall of the conical hopper and the horizontal plane is not less than 70 degrees, the upper part of the conical hopper is provided with a material level gauge, and the lower part of the conical hopper is provided with an annular blowing air supply device.
3. The coal dust bin with the discharging and weighing device and the feeding fluidization system as claimed in claim 1 or 2, wherein the annular blowing air supply device is an annular double-layer blowing air supply device comprising a compressed air ring pipe, an upper layer connecting rubber pipe, a lower layer connecting rubber pipe, an upper layer nozzle and a lower layer nozzle; the lower part of the conical hopper is provided with an upper layer nozzle and a lower layer nozzle, and the upper layer nozzle and the lower layer nozzle are respectively composed of a plurality of compressed air nozzles which are uniformly arranged on a wall plate of the conical hopper along the annular direction; the periphery of the conical hopper is provided with a compressed air ring pipe, the upper-layer nozzles are communicated with the compressed air ring pipe through corresponding upper-layer connecting rubber pipes, and the lower-layer nozzles are communicated with the compressed air ring pipe through corresponding lower-layer connecting rubber pipes; the air inlet end of the compressed air loop pipe is connected with an external compressed air conveying pipeline.
4. The coal dust bin with the discharging and weighing device and the feeding and fluidizing system as claimed in claim 3, wherein the corresponding interfaces of the upper layer nozzle and the upper layer connecting rubber pipe and the corresponding interfaces of the lower layer nozzle and the lower layer connecting rubber pipe are respectively connected through a hexagonal joint and a rubber pipe joint, and a copper gasket is arranged between the hexagonal joint and the wall plate of the conical hopper; the compressed air ring pipe is connected with the corresponding interface of the upper layer connecting rubber pipe or the corresponding interface of the lower layer connecting rubber pipe through a hoop, a pipe joint and a rubber pipe union joint respectively.
5. The coal powder bin with the discharging and weighing device and the feeding fluidization system according to claim 1, wherein an inlet pipeline is arranged at the bottom of the conical hopper close to the coal powder discharging port, the middle part of the inlet pipeline is connected with an external nitrogen conveying pipeline through a one-way throttle valve, and the one-way throttle valve is connected with the inlet pipeline through a connecting union joint; the outer end of the inlet pipeline is provided with a stop valve which is connected with the inlet pipeline through a connecting flange; the stop valve is provided with a valve on-off detection switch, the valve on-off detection switch and the one-way throttle valve are respectively connected with the control system, and the stop valve is a manual stop valve.
6. The coal powder bunker equipped with the discharging and weighing device and the feeding fluidization system according to claim 1, wherein a coupling flange is arranged between the coal powder discharging port and the pneumatic gate valve, a temperature measuring device is arranged on one side of the coupling flange, and the temperature measuring device is interlocked and controlled with a nitrogen switch valve on a nitrogen conveying pipeline through a control system.
7. The coal dust bin with the discharging, weighing and feeding fluidization system as claimed in claim 1, wherein the fluidization device is composed of an inlet flange, an upper shell, an upper flow guide cone, a lower shell and an outlet flange which are sequentially arranged from top to bottom, the upper shell and the lower shell are flexibly connected through an anti-static acupuncture filter felt, and the anti-static acupuncture filter felt is fixed with the upper shell or the lower shell through a roar hoop; a low-resistance conductive connecting copper sheet is arranged between the upper shell and the lower shell; the upper diversion cone is a conical cylinder with a large upper part and a small lower part, the lower diversion cone is an X-shaped cylinder with a narrowed middle part, and the lower end of the upper diversion cone extends to the middle part of the lower diversion cone; a compressed air injection pipe is arranged in the upper shell and is connected with an external compressed air conveying pipeline; the injection direction of the compressed air injection pipe faces to the lower discharge hole of the upper diversion cone.
8. The coal dust bin for the configuration of a discharging and weighing device and the feeding fluidization system according to claim 1, wherein 2 flanges connected with each other are connected with each other through copper sheets.
9. The coal powder bunker equipped with the discharging and weighing device and the feeding fluidization system as claimed in claim 1, wherein the discharge port of the second electrically cut-off sealing valve is connected with the powder weighing device through a coal powder guide pipe, and the coal powder guide pipe is connected with the discharge port of the second electrically cut-off sealing valve through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922130851.9U CN211418287U (en) | 2019-12-02 | 2019-12-02 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922130851.9U CN211418287U (en) | 2019-12-02 | 2019-12-02 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211418287U true CN211418287U (en) | 2020-09-04 |
Family
ID=72284894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922130851.9U Active CN211418287U (en) | 2019-12-02 | 2019-12-02 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211418287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110789855A (en) * | 2019-12-02 | 2020-02-14 | 中冶焦耐(大连)工程技术有限公司 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
| CN113786688A (en) * | 2021-09-06 | 2021-12-14 | 山东莱钢永锋钢铁有限公司 | Application method of blowing-assisting technology in dust removal system |
-
2019
- 2019-12-02 CN CN201922130851.9U patent/CN211418287U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110789855A (en) * | 2019-12-02 | 2020-02-14 | 中冶焦耐(大连)工程技术有限公司 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
| CN110789855B (en) * | 2019-12-02 | 2024-10-01 | 中冶焦耐(大连)工程技术有限公司 | Coal powder bin provided with discharging and weighing device and feeding fluidization system |
| CN113786688A (en) * | 2021-09-06 | 2021-12-14 | 山东莱钢永锋钢铁有限公司 | Application method of blowing-assisting technology in dust removal system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211418287U (en) | Coal powder bin provided with discharging and weighing device and feeding fluidization system | |
| CN104773509A (en) | System and method for conveying fluidized parallel storehouse pumps | |
| CN203602038U (en) | Positive pressure boosting type silica powder pneumatic conveyor | |
| CN109250504A (en) | A kind of coal dust two-phase transportation accurately controls and the system and method for flow Fast Calibration | |
| CN105347040A (en) | Pressure feed type high-pressure dense-phase pneumatic conveying device and pneumatic conveying method | |
| CN110789855A (en) | Coal powder bin provided with discharging and weighing device and feeding fluidization system | |
| CN108795503A (en) | Pressurization of dry pulverized coal dense-phase transporting system and method | |
| CN207514960U (en) | A kind of coal powder storage and supply system | |
| CN201381117Y (en) | Pneumatic conveyer of artificial stone granular materials | |
| CN104692127B (en) | Dense-phase conveying control method and system | |
| CN102912059A (en) | Top charging device of shaft furnace | |
| CN202898446U (en) | Top charging device of shaft furnace | |
| CN216336633U (en) | Chlorination furnace feed system | |
| CN207275734U (en) | More pellet automatic weighing transport systems | |
| CN215638710U (en) | Double-chamber shaft kiln feeding device | |
| CN211811381U (en) | Ground bin tank for oil field | |
| CN201138233Y (en) | Negative-pressure pneumatic conveying and measuring system | |
| CN206013895U (en) | A kind of high densification phase multichannel Geldart-D particle material issuing tank of pressure sending type and its induction system | |
| CN200995880Y (en) | Small normal-pressure powdered-coal with fluidizing function | |
| CN204872909U (en) | Oil fine coke measurement conveyor | |
| CN205575943U (en) | Beam type kiln jetting system | |
| CN216403139U (en) | Kiln dust and cement raw material warehousing system | |
| CN220315366U (en) | Air conveying chute capable of adjusting powder discharge flow | |
| CN217295741U (en) | Carbon powder tank | |
| CN213474730U (en) | Pneumatic conveying device for long-distance conveying of large-particle powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |