CN113457184A - Circulating type slurry pond fine powder recovery device and powder recovery pulping process - Google Patents
Circulating type slurry pond fine powder recovery device and powder recovery pulping process Download PDFInfo
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- CN113457184A CN113457184A CN202110841955.XA CN202110841955A CN113457184A CN 113457184 A CN113457184 A CN 113457184A CN 202110841955 A CN202110841955 A CN 202110841955A CN 113457184 A CN113457184 A CN 113457184A
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- 239000000843 powder Substances 0.000 title claims abstract description 249
- 239000002002 slurry Substances 0.000 title claims abstract description 125
- 238000011084 recovery Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims description 13
- 238000004537 pulping Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 138
- 239000000428 dust Substances 0.000 claims abstract description 94
- 238000005507 spraying Methods 0.000 claims abstract description 42
- 239000002912 waste gas Substances 0.000 claims abstract description 39
- 239000007921 spray Substances 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 23
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 238000000889 atomisation Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 abstract description 8
- 238000001694 spray drying Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 12
- 239000000047 product Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
Abstract
The invention discloses a circulating slurry tank fine powder recovery device, which comprises a spray tower, a dust removal device, a slurry tank and a slurry blending structure, wherein the spray tower is connected with the dust removal device; the spraying tower is provided with an airflow inlet, a waste gas outlet and a finished product discharge port, and the airflow inlet, the waste gas outlet and the finished product discharge port are distributed from top to bottom along the gravity direction in a working state; an atomization spraying device communicated with a slurry source is also arranged in the spraying tower; the dust removal device is arranged to be used for purifying the powder gas discharged from the waste gas outlet, the dust removal device is arranged to be used for discharging the collected powder into the slurry tank, and the water tank is connected with the slurry tank. The dust removal device filters and collects fine powder in the waste gas, the collected fine powder is re-stirred uniformly into slurry according to a certain proportion by the fine powder recovery device and is supplied to the spray drying tower for continuous use, and the slurry is not supplied to the ball mill for re-grinding and is supplied to the spray drying tower for continuous use after being homogenized in the slurry pool according to the traditional mode.
Description
Technical Field
The invention relates to the technical field of ceramic building material production equipment, in particular to a circulating type slurry tank fine powder recovery device.
Background
The ball mill is a common material refining and grinding device. It is widely used in the production industries of cement, ceramic raw materials, refractory materials and the like. The basic working mode is that a certain amount of high-alumina ballstones, medium-alumina ballstones, cobblestones or other hard substances are loaded into a roller of the ball mill to serve as grinding bodies, then raw materials needing to be ground and refined are input through a feeding device, a lining plate in the roller drives the grinding bodies to roll, when the grinding bodies are driven to a certain height, the grinding bodies fall off under the action of gravity of the grinding bodies, the falling grinding bodies smash and refine the raw materials in the roller, and then the refined raw materials form slurry and flow out through sieve holes in a sieve plate at the tail end of the roller. The ground slurry is only an intermediate product, and a fine powder finished product can be formed only by drying and recovering the slurry; the existing drying and recycling equipment has the defect of complex structure, and powder is easy to leak out to generate pollution in the drying and recycling process. In addition, in the drying process of the spray drying tower, fine powder is discharged along with air, and the fine powder treated by the dust removal device cannot be supplied to subsequent equipment for continuous use due to the fact that the fine powder is too fine and is prone to dust raising; however, the existing method consumes a large amount of electricity, increases the cost and has negative effects on the environment.
Disclosure of Invention
In order to overcome at least one of the defects of the prior art, the invention provides a circulating type slurry tank fine powder recovery device.
The technical scheme adopted by the invention for solving the problems is as follows:
according to one aspect of the invention, the invention provides a circulating type slurry tank fine powder recovery device, which comprises a spray tower, a dust removal device, a slurry tank and a water tank, wherein the spray tower is arranged on the bottom of the slurry tank; the spraying tower is provided with an airflow inlet, a waste gas outlet and a finished product discharge port, and the airflow inlet, the waste gas outlet and the finished product discharge port are sequentially arranged from top to bottom along the gravity direction in a working state; an atomization spraying device communicated with a slurry source is also arranged in the spraying tower; the dust removal device is arranged to be used for purifying the powder gas discharged from the waste gas outlet, the dust removal device is arranged to be used for discharging the collected powder into the slurry tank, and the water tank is connected with the slurry tank.
When the spraying device works, ground slurry is connected with the atomizing and spraying device through a pipeline, a hot air source is connected with an air flow inlet, then the hot air source is started, heated air is blown downwards from the top of the spraying tower through the air flow inlet, then the atomizing and spraying device is started, the slurry is atomized and sprayed into the spraying tower, then the heated air heats and dries the atomized slurry, so that powder formed after the atomized slurry is dried falls down under the action of self gravity, falls into and is collected at the bottom of the spraying tower, then flows out and is collected from a finished product discharge port, the heated air flows out from a waste gas outlet, waste gas carrying the powder is recycled and treated by a dust removal device, then is discharged into a slurry tank, water in a water tank is introduced into the slurry tank and is mixed with the powder according to a proportion to form slurry, and the slurry can be conveyed to the atomizing and spraying device again for recycling Low cost, environmental protection and energy conservation.
In some embodiments, a slurry formulating structure is also included; the slurry blending structure comprises a control system, a powder recovery hopper, a powder blanking control structure, a belt scale and a water quantity release device; the powder discharging control structure is arranged on a discharging port of the powder recovery hopper so as to control whether the powder recovery hopper discharges powder or not; the powder recovery hopper is connected with the dust removal device to contain the powder collected by the dust removal device; the belt weigher is arranged between the powder recovery hopper and the pulp tank, so that the powder recovery hopper can convey powder to the pulp tank through the transmission of the belt weigher; the water quantity release device is arranged between the water tank and the pulp tank so as to control the water quantity delivered to the pulp tank by the water tank; the powder feeding control structure, the belt scale and the water quantity release device are respectively electrically connected with the control system; dust collector, powder recovery fill, powder unloading control structure, belt weigher and thick liquid pond arrange in proper order and link up to make control system can monitor the powder weight of carrying for thick liquid pond in real time through the belt weigher, and regulate and control the water yield that the water tank carried to thick liquid pond through water yield release according to predetermined powder and water weight proportional value.
Thus, the dust removing device filters and collects the powder in the waste gas and then transmits the powder to the powder recovery hopper, the control system instructs the powder blanking control structure to be normally open when in work so that the powder continuously falls onto the belt weigher through the discharge port of the powder recovery hopper, then the powder is conveyed to the pulp tank through the belt weigher, in the process, the control system can monitor the weight of the powder conveyed to the pulp tank in real time through the belt weigher and regulate the water quantity conveyed to the pulp tank through the water quantity releasing device according to the preset powder and water weight ratio value until the powder releasing quantity of the powder blanking control structure and the water releasing quantity of the water quantity releasing device reach the preset powder and water weight ratio value, so that the powder and the water can be mixed according to the preset ratio to form slurry, and then the slurry is added into the slurry source again to be conveyed to the atomization spraying device again, finished product powder is formed after atomization and heating drying, so that the powder collected from the waste gas by the dust removal device is recycled, and the dust removal device has the characteristic of environmental protection.
In some embodiments, the dust removing device comprises a cyclone dust collector, the cyclone dust collector is provided with a first waste gas inlet, a first dust collecting outlet and a first purified gas outlet, the first waste gas inlet is connected with the waste gas outlet, and the first dust collecting outlet is connected with the powder recovery hopper.
Like this, the air after accomplishing the heating flows out from the waste gas outlet of spray tower, can carry partial powder, and in the dust removal processing through cyclone, collect the export and flow and be collected the powder recovery fill by first dust, the air after the purification flows out from first purge gas export.
In some embodiments, the dust removing device further comprises a bag-type dust remover, the bag-type dust remover is provided with a second waste gas inlet and a second dust collecting outlet, the second waste gas inlet is connected with the first purified gas outlet, and the second dust collecting outlet is connected with the powder recycling hopper.
Like this, the sack cleaner can carry out the secondary with cyclone's first purified gas outlet outflow purge gas and purify, has further promoted dust removal effect, but also can collect the powder of collecting by the second dust in the export flows into the powder recovery fill.
In some embodiments, the powder discharge control structure is a pneumatic gate valve; the powder recovery fill is equipped with feed inlet and discharge gate, and export and second dust collection export are collected to first dust all are connected with the feed inlet, and the discharge gate aligns with the belt weigher and links up, and powder unloading control structure sets up at the discharge gate.
Like this, the powder of collecting by cyclone and sack cleaner collects export and second dust respectively through first dust and collects in the export converges powder recovery fill, controls pneumatic gate valve through according to actual demand volume and switches on or close to when the work stops, close the discharge gate of powder recovery fill through pneumatic gate valve.
In some embodiments, further comprising a level monitor; the material level monitor is arranged in the powder recovery hopper to monitor the height of the powder in the powder recovery hopper, and the material level monitor is electrically connected with the control system to enable the control system to command the transmission speed of the belt scale according to the height value of the powder in the powder recovery hopper detected by the material level monitor, and the transmission speed is in direct proportion to the height value.
Therefore, when the material level monitor detects that the stacking height of the powder in the powder recovery hopper is at a high level, the control system instructs the belt scale to increase the transmission speed so as to accelerate the processing of the powder in the powder recovery hopper; when the material level monitor detects that the height of the powder in the powder recovery hopper is at a low level, the control system instructs the belt weigher to reduce the transmission speed so as to reduce the kinetic energy consumption of the belt weigher.
In some embodiments, the water quantity release device comprises a proportional regulating valve, a flow meter and a drain pipe; wherein, drain pipe one end is connected with the water tank, and the drain pipe other end is connected with the thick liquid pond, and proportional control valve and flowmeter all set up on the drain pipe, and proportional control valve and flowmeter all are connected with control system electricity.
Like this, control system can detect the water yield that flows to the thick liquid pond through the drain pipe by the water tank through the flowmeter in real time, then adjusts water flow through proportional control valve, has realized regulating and controlling the water yield that the water tank carried to the thick liquid pond through water yield release according to preset powder and water weight proportional value.
In some embodiments, the device further comprises a first delivery pump device, wherein the first delivery pump device is electrically connected with the control system; the first delivery pump means is arranged for delivering slurry in the slurry tank to the atomizing spray device.
Like this, control system can instruct first delivery pump device to carry the slurry in with the thick liquid pond through the pipeline and give atomizing sprinkler, need not the manual work and give atomizing sprinkler with the slurry transport in the thick liquid pond, has the high characteristics of degree of automation.
In some embodiments, the atomizing spraying device further comprises a first stirring device, the first stirring device is arranged in the slurry tank, the first stirring device is electrically connected with the control system, so that after the control system regulates and controls the water quantity delivered to the slurry tank by the water quantity releasing device according to a preset powder-water weight proportion value, the control system instructs the first stirring device to stir the powder and the water uniformly to form slurry, and then instructs the first delivery pump device to deliver the slurry to the atomizing spraying device.
Like this, after control system regulated and control the water yield that the water tank carried to thick liquid pond through water yield release according to predetermined powder and water weight ratio value, the first agitating unit of control system instruction formed the slurry with powder and water stirring, and the first delivery pump device of control system instruction is carried the slurry for atomizing sprinkler at last, need not manual stirring, has the high characteristics of degree of automation.
In some embodiments, the powder recovery hopper includes a support rod and a hopper body, the hopper body being disposed on the support rod.
In some embodiments, further comprising a first conveyor belt and a second conveyor belt; the first conveyer belt sets up between the feed inlet of export and powder recovery fill is collected to first dust, and the second conveyer belt sets up between the feed inlet of export and powder recovery fill is collected to the second dust.
In this way, the powder released from the first dust-collecting outlet can be transported into the powder-recovering hopper by the first conveyor belt, and the powder released from the second dust-collecting outlet can be transported into the powder-recovering hopper by the second conveyor belt. The first dust collection outlet and the second dust collection outlet are connected with the pulp tank respectively.
According to another aspect of the present invention, there is also provided a powder recovery pulping process comprising the steps of:
s1, supplying the slurry ground by the ball mill to an atomization spraying device in a spray tower, and supplying a hot gas source to an airflow inlet of the spray tower;
s2, atomizing the slurry by an atomizing and spraying device and spraying the atomized slurry to an air outlet downstream space of the air flow inlet;
s3, hot air flow sprayed out from the air flow inlet dries the atomized slurry to form dry powder, and the powder falls to the bottom of the spray tower under the action of self gravity;
s4, the heated hot air flow flows out of the spray tower through the waste gas outlet and is supplied to a dust removal device;
s5, filtering and collecting powder carried in the heated hot air flow by a dust removal device, supplying the powder to a powder recovery hopper, and conveying the powder to a pulp tank by the transmission of a belt scale;
s6, the control system monitors the weight of the powder conveyed to the pulp tank in real time through the belt weigher, and regulates and controls the water quantity conveyed to the pulp tank by the water quantity release device according to the preset powder-water weight ratio value so as to mix the powder and the water in the pulp tank to form slurry with the preset powder-water weight ratio.
In some embodiments, S6 further comprises: and when the control system instructs the belt weigher to continuously convey the powder to the slurry tank, the instruction water quantity release device conveys the water in the water tank to the slurry tank according to a preset powder-water weight ratio value.
In some embodiments, S6 further comprises: the control system firstly instructs the water quantity release device to convey water in the water tank to the slurry tank according to a preset quantity, and then instructs the belt scale to convey powder with corresponding weight to the slurry tank according to a preset powder-water weight proportion value.
Drawings
FIG. 1 is a schematic structural diagram of a circulating type slurry tank fine powder recovery apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion indicated by A in FIG. 1;
fig. 3 is a partially enlarged view indicated by B in fig. 1.
Wherein the reference numerals have the following meanings:
1. a spray tower; 11. an airflow inlet; 12. an exhaust gas outlet; 13. discharging a finished product; 2. a dust removal device; 21. a cyclone dust collector; 22. a bag-type dust collector; 3. a powder recovery hopper; 31. a support bar; 37. a weighing sensor; 32. a bucket body; 34. a level monitor; 35. a belt scale; 4. a water tank; 5. a pulp tank; 36. a powder blanking control structure; 6. a first conveyor belt; 7. a second conveyor belt; 81. a proportional regulating valve; 82. a flow meter; 83. a drain pipe; 9. a first delivery pump device.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
Referring to fig. 1 to 3, the invention provides a circulating slurry tank fine powder recovery device, which comprises a spray tower 1, a dust removal device 2, a slurry tank 5 and a water tank 4; the spraying tower 1 is provided with an airflow inlet 11, a waste gas outlet 12 and a finished product discharge port 13, and the airflow inlet 11, the waste gas outlet 12 and the finished product discharge port 13 are sequentially arranged from top to bottom along the gravity direction in a working state; an atomization spraying device communicated with a slurry source head is also arranged in the spraying tower 1; the dust removing device 2 is arranged for purifying the powder gas discharged from the exhaust gas outlet 12, and the dust removing device 2 is arranged for discharging the collected powder into the slurry tank 5, and the water tank 4 is connected to the slurry tank 5.
When the spraying device works, ground slurry is connected with the atomizing and spraying device through a pipeline, a hot air source is connected with an air flow inlet 11, then the hot air source is started, heated air is blown downwards from the top of the spraying tower 1 through the air flow inlet 11, then the atomizing and spraying device is started to atomize the slurry and spray the atomized slurry in the spraying tower 1, then the heated air heats and dries the atomized slurry, so that powder formed after the atomized slurry is dried falls down under the action of self gravity and falls into and is converged at the bottom of the spraying tower 1, then the powder flows out and is collected from a finished product discharge hole 13, the heated air flows out from a waste gas outlet 12, waste gas carrying the powder is recycled by a dust removal device 2 and then is discharged into a slurry tank 5, then water in a water tank 4 is guided into the slurry tank 5 to be mixed with the powder in proportion to form slurry, and the slurry can be conveyed to the atomizing and spraying device again for recycling, the invention has the characteristics of simple structure, low cost and environmental protection.
In this embodiment, the apparatus further includes a slurry blending structure; the slurry blending structure comprises a control system, a powder recovery hopper 3, a powder blanking control structure 36, a belt scale 35 and a water quantity release device; the powder blanking control structure 36 is arranged on the discharge port of the powder recovery hopper 3 to be able to control whether the powder recovery hopper 3 discharges powder; the powder recovery hopper 3 is connected with the dust removing device 2 to contain the powder collected by the dust removing device 2; the belt weigher 35 is provided between the powder recovery hopper 3 and the slurry tank 5 so that the powder recovery hopper 3 can deliver the powder to the slurry tank 5 by the transmission of the belt weigher 35; the water quantity release device is arranged between the water tank 4 and the pulp tank 5 so as to control the water quantity delivered from the water tank 4 to the pulp tank 5; the powder feeding control structure 36, the belt scale 35 and the water quantity release device are respectively electrically connected with the control system; dust collector 2, powder recovery fill 3, powder unloading control structure 36, belt weigher 35 and thick liquid pond 5 arrange in proper order and link up to make control system can monitor the powder weight of carrying for thick liquid pond 5 through belt weigher 35 in real time, and regulate and control the water yield that water tank 4 carried to thick liquid pond 5 through water yield release according to predetermined powder and water weight proportional value.
Thus, after the dust removing device 2 filters and collects the powder in the waste gas, the powder is transmitted and stored in the powder recovery hopper 3, when the dust removing device works, the control system instructs the powder blanking control structure 36 to be normally opened so that the powder continuously falls onto the belt scale 35 from the discharge port of the powder recovery hopper 3, then the powder is conveyed to the slurry tank 5 by the belt scale 35, in the process, the control system can monitor the weight of the powder conveyed to the slurry tank 5 in real time through the belt scale 35 and regulate and control the water quantity conveyed to the slurry tank 5 by the water quantity releasing device according to the preset powder-water weight ratio value until the powder releasing amount of the powder blanking control structure 36 and the water releasing amount of the water quantity releasing device reach the preset powder-water weight ratio value, so that the powder and the water can be mixed according to the preset ratio to form slurry, and then the slurry is added into the slurry source again, in order to convey atomizing sprinkler again, form the finished product powder through atomizing and heating after drying to make by dust collector 2 from the powder of collecting in the waste gas by recycle, have the characteristics of environmental protection. In detail, in this case, a storage tank for storing the slurry is further provided in the pipeline upstream of the atomizing spray device, so that the slurry can be first transferred and stored into the storage tank for use by the atomizing spray device.
In this embodiment, the dust removing device 2 includes a cyclone 21, the cyclone 21 is provided with a first waste gas inlet, a first dust collecting outlet and a first purified gas outlet, the first waste gas inlet is connected with the waste gas outlet 12, and the first dust collecting outlet is connected with the powder recovery hopper 3. Thus, after the heated air flows out from the exhaust gas outlet 12 of the spray tower 1, a part of the powder is carried, and after the dust removal processing by the cyclone 21, the heated air flows out from the first dust collection outlet and is collected in the powder recovery bucket 3, and the purified air flows out from the first purified gas outlet.
In this embodiment, dust collector 2 still includes sack cleaner 22, and sack cleaner 22 is equipped with second waste gas entry and the export is collected to the second dust, and second waste gas entry is connected with first purge gas outlet, and the export is collected to the second dust and is connected the setting with powder recovery fill 3. Like this, sack cleaner 22 can be with the first purified gas outlet outflow of cyclone 21 purify gas for the secondary, has further promoted dust removal effect, but also can collect the powder of gathering and flow into in powder recovery fill 3 by the export is collected to the second dust.
In this embodiment, the powder discharging control structure 36 is a pneumatic gate valve; powder recovery is fought 3 and is equipped with feed inlet and discharge gate, and export and second dust collection export are collected to first dust all are connected with the feed inlet, and the discharge gate aligns with belt weigher 35 and links up, and powder unloading control structure 36 sets up at the discharge gate. Like this, the powder that is collected by cyclone 21 and sack cleaner 22 collects the export through first dust respectively and collects in export and the export converges powder recovery fill 3 with the second dust, through controlling pneumatic gate valve according to actual demand volume and switching on or close to when the work stops, close the discharge gate of powder recovery fill 3 through pneumatic gate valve.
In the present embodiment, a level monitor 34 is also included; the material level monitor 34 is arranged in the powder recovery bucket 3 to monitor the height of the powder accumulation in the powder recovery bucket 3, and the material level monitor 34 is electrically connected with the control system, so that the control system can command the conveying speed of the belt scale 35 according to the height value of the powder accumulation in the powder recovery bucket 3 detected by the material level monitor 34, and the conveying speed is in direct proportion to the height value. In detail, in the present embodiment, the powder collecting hopper 3 is provided with detection points at three positions, i.e., a high position, a middle position, and a bottom position. Thus, when the level monitor 34 detects that the height of the powder in the powder recovery hopper 3 is at a high level, the control system instructs the belt scale 35 to increase the conveying speed to speed up the processing of the powder in the powder recovery hopper 3; when the level monitor 34 detects that the height of the powder in the powder recovery hopper 3 is at a low level, the control system instructs the belt weigher 35 to reduce the transmission speed so as to reduce the kinetic energy consumption of the belt weigher 35.
In the present embodiment, the water amount releasing means includes a proportional regulating valve 81, a flow meter 82, and a drain pipe 83; wherein, drain pipe 83 one end is connected with water tank 4, and the drain pipe 83 other end is connected with thick liquid pond 5, and proportional control valve 81 and flowmeter 82 all set up on drain pipe 83, and proportional control valve 81 and flowmeter 82 all are connected with control system electricity. In this way, the control system can detect the amount of water flowing from the water tank 4 to the slurry tank 5 through the drain pipe 83 in real time by the flow meter 82, and then adjust the flow rate of water by the proportional control valve 81, thereby realizing the regulation and control of the amount of water delivered from the water tank 4 to the slurry tank 5 by the water amount release device according to the preset powder-to-water weight ratio value.
In the embodiment, the device further comprises a first delivery pump device 9, wherein the first delivery pump device 9 is electrically connected with the control system; a first transfer pump means 9 is arranged for transferring the slurry in the slurry tank 5 to the atomizing spray means. Like this, control system can instruct first delivery pump device 9 to carry the slurry in thick liquid pond 5 for atomizing sprinkler through the pipeline, need not the manual work and gives atomizing sprinkler with the slurry transport in the thick liquid pond 5, has the high characteristics of degree of automation. In detail, in the embodiment, a slurry storage tank is further arranged in front of the atomizing and spraying device, and the first delivery pump device 9 stores the slurry in the slurry storage tank through a pipeline, and then the slurry is supplied to the atomizing and spraying device from the slurry storage tank.
In this embodiment, still include first agitating unit, first agitating unit sets up in thick liquid pond 5, and first agitating unit is connected with control system is automatically controlled to after control system regulates and control the water yield that water tank 4 carried to thick liquid pond 5 through water yield release according to predetermined powder and water weight ratio value, control system instruction first agitating unit forms the slurry with powder and water stirring, then control system instruction first delivery pump device 9 carries the slurry for atomizing sprinkler. Like this, after control system regulated and control the water yield that water tank 4 carried to thick liquid pond 5 through water yield release according to predetermined powder and water weight ratio value, the first agitating unit of control system instruction forms the slurry with powder and water stirring, and the last first delivery pump device of control system instruction 9 is carried the slurry for atomizing sprinkler, need not manual stirring, has the high characteristics of degree of automation.
In the present embodiment, the powder recovery hopper 3 includes the support rod 31 and the hopper body 32, and the hopper body 32 is provided on the support rod 31.
In this embodiment, a first conveyor belt 6 and a second conveyor belt 7 are further included; the first conveyor belt 6 is disposed between the first dust collection outlet and the feed inlet of the powder recovery hopper 3, and the second conveyor belt 7 is disposed between the second dust collection outlet and the feed inlet of the powder recovery hopper 3. In this way, the powder discharged from the first dust collection outlet can be transferred into the powder recovery hopper 3 by the first conveyor belt 6, and the powder discharged from the second dust collection outlet can be transferred into the powder recovery hopper 3 by the second conveyor belt 7. The first dust collecting outlet and the second dust collecting outlet are respectively connected with the pulp tank 5.
In detail, in the present embodiment, a load cell 37 is further disposed between the support rod 31 and the bucket body 32, and the load cell 37 is electrically connected to the control system to be able to detect the weight of the bucket body 32 in real time, so as to be able to detect the weight of the powder in the bucket body 32 in real time; when the weighing sensor 37 detects that the weight of the powder in the powder recovery hopper 3 is at a high value, the control system instructs the belt scale 35 to increase the transmission speed so as to accelerate the processing of the powder in the powder recovery hopper 3; when the weighing sensor 37 detects that the weight of the powder in the powder recovery hopper 3 is at a low value, the control system instructs the belt weigher 35 to reduce the transmission speed so as to reduce the kinetic energy consumption of the belt weigher 35; in addition, because the detection precision of the weighing sensor 37 is high, a more precise weight detection value can be provided for the control system in real time, so that the control system can more precisely control the transmission speed of the belt scale.
Example two:
in this embodiment, a powder recycling pulping process implemented by using the recycling chest fine powder recycling apparatus of the first embodiment is provided, the process comprising the following steps:
s1, supplying the slurry ground by the ball mill to an atomization spraying device in the spray tower 1, and supplying a hot gas source to an airflow inlet 11 of the spray tower 1;
s2, atomizing the slurry by an atomizing and spraying device and spraying the atomized slurry to an air outlet downstream space of the air flow inlet 11;
s3, hot air flow sprayed out from the air flow inlet 11 dries the atomized slurry to form dry powder, and the powder falls to the bottom of the spray tower 1 under the action of self gravity;
s4, the heated hot air flow flows out of the spray tower 1 through the waste gas outlet 12 and is supplied to the dust removal device 2;
s5, the dust removal device 2 filters and collects the powder carried in the heated hot air flow and supplies the powder to the powder recovery hopper 3, and then the powder is conveyed to the pulp tank 5 through the transmission of the belt scale 35;
s6, the control system monitors the weight of the powder conveyed to the stock chest 5 in real time through the belt scale 35, and regulates and controls the water quantity conveyed to the stock chest 5 by the water tank 4 through the water quantity release device according to the preset powder-water weight ratio value, so that slurry with the preset powder-water weight ratio is formed in the stock chest 5 in a mixed mode.
In detail, in this embodiment, S6 further includes: the control system instructs the belt weigher 35 to continuously deliver the powder to the stock chest 5 and instructs the water quantity release device to deliver the water in the water tank 4 to the stock chest 5 according to the preset powder-to-water weight ratio.
Example three:
the difference between this embodiment and the second embodiment:
in this embodiment, S6 further includes: the control system firstly instructs the water quantity release device to convey the water in the water tank 4 to the slurry tank 5 according to the preset quantity, and then instructs the belt scale 35 to convey the powder with the corresponding weight to the slurry tank 5 according to the preset powder-water weight ratio.
In detail, the control system firstly instructs the water quantity release device to convey the water in the water tank 4 to the slurry pool 5 according to a preset quantity, then the pneumatic gate valve on the discharge port of the powder recovery hopper 3 is closed, the first conveyor belt 6 and the second conveyor belt 7 are kept open, the powder is continuously conveyed to the powder recovery hopper 3, at the moment, the control system adopts the weighing sensor 37 to detect the weight of the powder in the hopper body 32, when the accumulated weight of the powder in the powder recovery hopper 3 reaches a set value, the first conveyor belt 6 and the second conveyor belt 7 stop conveying the powder for the powder recovery hopper 3, then the pneumatic gate valve at the bottom is opened, the powder falls from the powder recovery hopper 3, the belt scale starts conveying the powder, when the weight of the powder in the powder recovery hopper 3 is reduced to a preset value, the pneumatic gate valve is closed, the scale stops conveying the powder, after the first stirring device uniformly stirs the powder and the water in the slurry pool 5 to form slurry, the slurry is delivered to the atomizing spray device by a first delivery pump means 9. The foregoing process is then repeated, thus completing the work cycle.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. Circulating thick liquid pond farine recovery unit, its characterized in that: comprises a spray tower (1), a dust removal device (2), a pulp tank (5) and a water tank (4);
the spraying tower (1) is provided with an airflow inlet (11), a waste gas outlet (12) and a finished product discharge hole (13), and the airflow inlet (11), the waste gas outlet (12) and the finished product discharge hole (13) are sequentially arranged from top to bottom along the gravity direction in a working state;
an atomization spraying device communicated with a slurry source head is also arranged in the spraying tower (1);
the dust removal device (2) is arranged to purify the powder gas discharged from the waste gas outlet (12), the dust removal device (2) is arranged to discharge the collected powder into the slurry tank (5), and the water tank (4) is connected with the slurry tank (5).
2. The recycling apparatus for fine powder in a circulating type slurry tank according to claim 1, further comprising a slurry blending structure;
the slurry blending structure comprises a control system, a powder recovery hopper (3), a powder blanking control structure (36), a belt scale (35) and a water quantity release device;
the powder discharging control structure (36) is arranged on a discharging port of the powder recovery hopper (3) so as to control whether the powder recovery hopper (3) discharges powder or not;
the powder recovery hopper (3) is connected with the dust removal device (2) to contain the powder collected by the dust removal device (2);
the belt scale (35) is arranged between the powder recovery hopper (3) and the stock chest (5) so that the powder recovery hopper (3) can convey powder to the stock chest (5) by the conveying of the belt scale (35);
the water quantity release device is arranged between the water tank (4) and the pulp tank (5) so as to control the water quantity delivered by the water tank (4) to the pulp tank (5);
the powder feeding control structure (36), the belt scale (35) and the water quantity release device are respectively electrically connected with the control system;
dust collector (2), powder recovery fill (3), powder unloading control structure (36), belt weigher (35) and thick liquid pond (5) link up of arranging in proper order, so that control system can pass through belt weigher (35) monitor in real time and carry for the powder weight in thick liquid pond (5), and pass through according to predetermined powder and water weight proportional value water yield release device regulation and control water tank (4) to the water yield that thick liquid pond (5) carried.
3. A circulating type slurry pond fine powder recovery device according to claim 2, characterized in that the dust removal device (2) comprises a cyclone (21), the cyclone (21) is provided with a first waste gas inlet, a first dust collection outlet and a first purified gas outlet, the first waste gas inlet is connected with the waste gas outlet (12), and the first dust collection outlet is connected with the powder recovery hopper (3).
4. A circulating slurry tank fine powder recovery device according to claim 3, wherein the dust removing device (2) further comprises a bag-type dust remover (22), the bag-type dust remover (22) is provided with a second waste gas inlet and a second dust collecting outlet, the second waste gas inlet is connected with the first purified gas outlet, and the second dust collecting outlet is connected with the powder recovery hopper (3).
5. A circulating slurry tank fine powder recovery device according to claim 4, characterized in that the powder blanking control structure (36) is a pneumatic gate valve;
powder recovery fill (3) are equipped with feed inlet and discharge gate, first dust collect the export with the export is collected to the second dust all with the feed inlet is connected, the discharge gate with belt weigher (35) align and link up, powder unloading control structure (36) set up the discharge gate.
6. The recycling chest fines recovery apparatus of claim 2 further comprising a level monitor (34);
material level monitor (34) set up in powder recovery fill (3), in order to monitor the accumulational height of powder in powder recovery fill (3), material level monitor (34) with control system is automatically controlled to be connected, so that control system can pass through material level monitor (34) detect the accumulational height value of powder in powder recovery fill (3), the instruction the transmission speed of belt weigher (35), transmission speed and height value become direct proportional relation.
7. A circulating type slurry tank fine powder recovery device according to claim 2, characterized in that the water quantity release device comprises a proportion regulating valve (81), a flow meter (82) and a drain pipe (83); wherein, drain pipe (83) one end with water tank (4) are connected, drain pipe (83) other end with thick liquid pond (5) are connected, proportional control valve (81) with flowmeter (82) all set up on drain pipe (83), just proportional control valve (81) with flowmeter (82) all with control system electricity is connected.
8. The powder recovery pulping process is characterized by comprising the following steps:
s1, supplying the slurry ground by the ball mill to the atomization spraying device in the spraying tower (1), and supplying a hot gas source to the gas flow inlet (11) of the spraying tower (1);
s2, atomizing the slurry by the atomizing and spraying device, and spraying the atomized slurry in an air outlet downstream space of the air flow inlet (11);
s3, hot air flow sprayed out by the air flow inlet (11) dries the atomized slurry to form dry powder, and the powder falls to the bottom of the spray tower (1) under the action of self gravity;
s4, the heated hot air flow flows out of the spray tower (1) through the waste gas outlet (12) and is supplied to the dust removal device (2);
s5, filtering and collecting powder carried in heated hot air flow by the dust removal device (2), supplying the powder to the powder recovery hopper (3), and then conveying the powder to the slurry tank (5) through the transmission of the belt scale (35);
s6, the control system monitors the weight of the powder conveyed to the stock chest (5) in real time through the belt scale (35), and regulates and controls the water quantity conveyed to the stock chest (5) by the water quantity release device through the water quantity release device according to a preset powder-to-water weight ratio value, so that slurry with a preset powder-to-water weight ratio is formed by mixing in the stock chest (5).
9. The powder recovery pulping process of claim 8, wherein the S6 further comprises: and the control system instructs the belt weigher (35) to continuously convey powder to the stock chest (5) and instructs the water quantity release device to convey water in the water tank (4) to the stock chest (5) according to a preset powder-water weight ratio.
10. The powder recovery pulping process of claim 8, wherein the S6 further comprises: the control system firstly instructs the water quantity release device to convey the water in the water tank (4) to the slurry tank (5) according to a preset quantity, and then instructs the belt scale (35) to convey the powder with the corresponding weight to the slurry tank (5) according to a preset powder-water weight ratio value.
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| CN202110841955.XA CN113457184A (en) | 2021-07-26 | 2021-07-26 | Circulating type slurry pond fine powder recovery device and powder recovery pulping process |
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| CN202110841955.XA CN113457184A (en) | 2021-07-26 | 2021-07-26 | Circulating type slurry pond fine powder recovery device and powder recovery pulping process |
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Effective date of registration: 20230414 Address after: No. 25 (F7), Zone C, Sanshui Center Science and Technology Industrial Zone, Foshan City, Guangdong Province, 528137 (Residence Application) Applicant after: Foshan henglitai Technology Co.,Ltd. Address before: 528137 No. 25 (C), science and Technology Industrial Zone, Sanshui center, Foshan, Guangdong, China (F4) Applicant before: FOSHAN HENGLITAI MACHINERY Co.,Ltd. |