CN113145460B - Energy-saving coal dry separation system with multiple air supply sources - Google Patents

Abstract

The invention provides an energy-saving coal dry separation system with multiple air supply sources, which comprises a raw coal feeding part, an air supply part, a separation part and a dust removal part, wherein the raw coal feeding part comprises a product conveyor, a buffer bin and an intelligent conveying device, the separation part comprises a host bracket, an intelligent vibration main separation bed device, a host hanging and discharging device, the air supply part comprises an intelligent air regulation system consisting of a left main fan and a right main fan, the dust removal part comprises an intelligent air regulation dust removal system, and the intelligent air regulation system is provided with at least two air supply sources. The multi-air source air supply energy-saving coal dry separation system is beneficial to reducing the retention time of materials and accelerating the movement speed of the materials, and improves the processing capacity of the time of a separation bed unit. The device not only can improve sorting precision, but also can reduce energy consumption, save energy and electricity from the aspect of environmental protection, and avoid unnecessary waste.

Description

An energy-saving coal dry separation system with multiple air sources for air supply

Technical field

The invention belongs to the technical field of coal sorting, and specifically relates to an energy-saving dry coal sorting system with multiple air sources for air supply, which is suitable for coal sorting systems with extremely large processing capacity.

Background technique

Coal is a solid combustible mineral that was gradually formed by ancient plants buried underground and undergoing complex biochemical and physicochemical changes. Coal is known as black gold and the food of industry. It has been one of the main energy sources used by the human world since the 18th century. Since the 21st century, although the value of coal is not as good as before, after all, the present and the future are very long. For a period of time, coal has been one of the indispensable sources of energy for human production and life. The supply of coal is also related to the stability of all aspects of the development of my country's industry and even the entire society. The issue of coal supply security is also the most important issue in my country's energy security. important part.

Coal sorting is mainly divided into two directions: water washing and dry separation. Water washing basically uses jigging, heavy media, flotation and other processes. The advantages are mature technology, high sorting accuracy and large processing capacity. The disadvantages are large construction investment, long cycle, high production cost, and large water consumption and waste. The water consumption of washing 1 ton of raw coal is about 0.1m ³ , and low-quality by-products such as coal slime are also produced. Dry separation is a coal preparation method that has existed and developed slowly in the past two decades. It has the advantages of no water, simple process, low investment, and low production cost. The main representative process is the wind dry coal preparation process. From the perspective of coal distribution regions, the west accounts for 80.4% of the country, the center accounts for 15.2% of the country, and the east accounts for 4.4% of the country. The west is the main distribution area of coal in my country, and it is also an area with drought and low water. Therefore, compared with water washing, dry separation has broader demand and prospects. In a very short period of time, it has gained great popularity in my country and around the world. area promotion. The moisture content, ash content and sulfur content of coal are important factors affecting coal quality. In order to improve the quality of coal, coal must be dehydrated and sorted. With the development of coal upgrading technology, coal drying and dry separation processes have been widely used and achieved remarkable results.

However, the current wind-driven dry coal preparation technology still has shortcomings such as poor sorting accuracy, small processing capacity, and high requirements for coal types. Moreover, the current screening device used in intelligent coal dry separators needs to crush larger coal particles after screening coal to meet subsequent processing requirements, which greatly reduces work efficiency; Moreover, the coal screening device will produce a large amount of dust during the process of screening coal, which will pollute the surrounding environment. If the operator works in such a working environment for a long time, it will seriously affect the operator's health. In addition, a large amount of energy is consumed in the process of dust treatment.

Therefore, it is necessary to further improve the wind dry coal separation process to make it more suitable for separation in various occasions or mining areas.

Contents of the invention

Based on the problems existing in the prior art, the present invention provides an energy-saving dry coal separation system with multiple air sources for air supply, which not only solves the technical problems existing in the prior art, but also improves the processing capacity of coal separation. The energy consumed during the sorting process is reduced.

According to the technical solution of the present invention, an energy-saving dry coal separation system with multiple air sources for air supply is provided, which includes a raw coal feeding part, an air supply part, a sorting part and a dust removal part, where the raw coal feeding part includes a product conveyor, Buffer bin and intelligent conveying device. The sorting part includes the main machine bracket, the intelligent vibrating main bed device, the main machine hanging and discharging device. The air supply part includes the intelligent air regulating system composed of the left main fan and the right main fan. The dust removal part includes Intelligent air adjustment and dust removal system, the intelligent air adjustment system has at least two air sources.

Among them, the left main fan is connected to the left air divider through the left main fan damper, and the left air divider blows the sorting air into the first group of sorting chambers.

Further, the right main fan is connected to the right air divider via the right main fan damper, and the right air divider blows the sorting air into the second group of sorting chambers.

Further, a left inspection and observation window is provided on the air duct where the left main fan is sent to the left air distributor through the left main fan damper.

Further, a right inspection and observation window is provided on the air duct where the right main fan is sent to the right air distributor through the right main fan damper.

Further, the left inspection window is provided between the left main fan damper and the left air divider.

In addition, according to the different air volumes required for each part of the main bed in the intelligent vibrating main bed device, differentiated air supply needs are achieved.

In addition, more than 6 air chambers are set up under the main bed in the intelligent vibrating main bed device, and the air source is allocated according to the sorting parameters required by each air chamber.

The energy-saving dry coal separation system with air supply from multiple air sources of the present invention is not only beneficial to reducing the residence time of materials and accelerating the movement speed of materials, but also increasing the processing capacity of the sorting bed per unit time. This equipment can not only improve the sorting accuracy, but also reduce energy consumption from an environmental point of view, save energy and electricity, and avoid unnecessary waste.

Description of drawings

Figure 1 is a schematic structural diagram of an energy-saving coal dry separation system with air supply from multiple air sources according to the present invention;

Figure 2 is a top view of the intelligent vibrating main selection bed of Figure 1;

Figure 3 is a schematic diagram of the bed surface through hole in the intelligent vibration main selection bed of Figure 2;

Figure 4 is a longitudinal schematic side view of the intelligent vibration main selection bed in Figure 1;

Figure 5 is a longitudinal side view of the intelligent vibrating main selection bed equipped with sorting grids;

Figure 6 is a schematic diagram of the vibration direction of the back plate shown in Figure 4;

Figure 7 is a cross-sectional view of the coal dry separation system with a separation bed with a product chute;

Figure 8 is the appearance view of an energy-saving coal dry separation system with multiple air sources for air supply installed with a quick access door;

Figure 9 is a schematic diagram of a loading and transportation system based on Figure 8;

Figure 10 is a partial view of the dust removal system of the energy-saving coal dry separation system with air supply from multiple air sources;

Figure 11 is a schematic cross-sectional view of the dust removal air duct;

Figure 12 is a schematic diagram of the air blast sorting of an energy-saving coal dry separation system with air supply from multiple air sources.

The reference numbers in the figure are as follows: 1. Left main fan; 2. Left main fan damper; 3. Left air distributor; 4. Product grading chute; 5. Host bracket; 6. Right air distributor; 7. Right main Fan damper; 8. Right main fan; 9. Dust collector air inlet; 10. Full bag dust collector; 11. Fully enclosed dust hood; 12. Dust removal duct; 13. Left main fan air inlet duct; 14. Right main Fan air inlet duct; 15. Main selection bed; 16. Host hanging; 17. Induced air duct; 18. Bag induced draft fan; 19. Induced draft fan chimney; 21. Material inlet; 22. Clean coal discharge chute; 23. Medium coal unloading chute; 24. Gangue unloading chute; 25. Gangue discharge barrel; 26. Gangue overflow outlet; 27. Gangue discharge area; 28. Initial sorting area; 701. Left maintenance observation window; 702. Right maintenance observation Window; 91, is the belt scale; 92, belt conveyor; 1501, longitudinal angle monitor; 1502, transverse angle monitor; 1101, quick access door; 1102, dust filter cloth; 8-1, dust collector air inlet horizontal pipe; 8 -2. Square tube for dust collector air inlet connection; 8-3. Dust collector air inlet inspection blind plate; 31. Sorting air holes; 32. Bed panel; 41. Back panel; gradually higher grid bars b1, b2, b3, ……,bn…….

Detailed ways

The technical solutions in the patent embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the patent embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the patent of the present invention, not all of them. Example. Based on the embodiments in the patent of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the patent of the present invention.

The present invention provides an energy-saving coal dry separation system with air supply from multiple air sources. The present invention will be further described below with reference to Figure 1. Figure 1 is a schematic structural diagram of an energy-saving coal dry separation system with air supply from multiple air sources according to the present invention. As shown in Figure 1, the energy-saving dry coal separation system with multiple air sources includes a raw coal feeding part, an air supply part, a sorting part and a dust removal part. The raw coal feeding part includes a product conveyor, a buffer bin and an intelligent conveying device. , the sorting part includes the main machine bracket, the intelligent vibrating main bed device, the main machine hanging 16 and the discharge device, the air supply part includes the intelligent air adjustment system composed of the left main fan and the right main fan, and the dust removal part includes the intelligent air adjustment and dust removal system .

Further, raw coal (including but not limited to coal products or coal materials) is sent to the buffer bin for sorting by the raw coal product conveyor. The raw coal in the buffer bin is intelligently delivered to the sorting section through the intelligent conveying device for sorting. The sorting part includes a host bracket 5, an intelligent main sorting bed device, a host hanging 16 and a discharging device. The intelligent main sorting bed device is installed on the host bracket 5 through the host hanging 16. The intelligent main sorting bed device includes a main Selecting bed 15, the discharging device is a material receiving chute located at the lower part of the intelligent main sorting bed device. The material receiving chute is preferably product chute 4.

The air supply part includes an intelligent air regulating system composed of a left main fan 1 and a right main fan 8. The left main fan 1 is connected to the left air divider 3 through the left main fan damper 2. The left air divider 3 will separate the air blower. into the first group of sorting chambers; the right main fan 8 is connected to the right air divider 6 via the right main fan damper 7, and the right air divider 6 blows the sorting air into the second group of sorting chambers.

The dust removal part includes an intelligent air-adjusting and dust-removing system. The intelligent air-adjusting and dust-removing system includes a dust removal pipe 12, a full bag dust collector 10 and a bag induced draft fan 18. The fully enclosed dust collecting cover 11 set on the upper part of the sorting part collects the dust generated by the sorting part. The dust is transported to the dust collector air inlet 9 through the dust removal pipe 12. The impurity-containing or dust-containing gas passing through the dust collector air inlet 9 enters the full bag dust collector 10. The full bag dust collector 10 is connected to the left main fan air inlet duct 13 and the right main fan. The air inlet duct 14 of the fan and the air inlet duct 13 of the left main fan 1 are used to transport the gas purified by the full bag dust collector 10 back to the left main fan 1. The air inlet duct 14 of the right main fan 8 is used to transport the gas purified by the full bag dust collector 10. 10 The purified gas is sent back to the right main fan 8. The dust removal part further includes a bag induced draft fan 18. The bag induced draft fan 18 is connected to an induced draft fan chimney 19 and an induced air duct 17. The induced air duct 17 introduces the dust-containing gas into the full bag dust collector 10. After being processed by the bag dust collector 10, Part of the clean gas is discharged into the atmosphere through the induced draft fan chimney 19.

Further, on the air duct where the left main fan 1 is sent to the left air distributor 3 via the left main fan damper 2, a left inspection window 701 is preferably provided. Similarly, on the air duct where the right main fan 8 is sent to the right air distributor 6 via the right main fan damper 7, a right inspection window 702 is preferably provided. More preferably, the left inspection and observation window 701 is arranged between the left main fan damper 2 and the left air distributor 3 , and the right inspection and observation window 702 is arranged between the right main fan damper 7 and the right air distributor 6 . In the intelligent vibrating main selection bed device, more than 6 air chambers are set up under the main selection bed, and the air source is allocated according to the sorting parameters required by each air chamber.

The energy-saving coal dry separation system with air supply from multiple air sources of the present invention is equipped with a multi-air source system composed of multiple main air machines, thereby realizing intelligent air regulation. During the air selection process, differentiated air supply needs are achieved according to the different air volumes required by each part of the main selection bed 15 . Compared with the existing dry separation machine, which only has one main fan, and the air volume and air pressure of the air source are single and unadjustable, the energy-saving coal dry separation system with multiple air sources supplying air of the present invention has a main selection bed area that is very large, and the air chamber can even be as many as ten Several, the air volume and air pressure required by each air chamber also have different parameters according to different positions under the main selection bed; further, it also solves the problem of setting a main air source under the super large sorting bed of the present invention, even if the air volume Adjustable, it cannot overcome the technical problem that the wind pressure is still the same parameter. The use of a multi-air source system not only realizes the adjustment of the sorting parameters of the dry separator; it can also adjust the different air supply volumes of multiple air sources at any time, and allocate air sources according to the sorting parameters required by each air chamber. This not only It can improve the sorting accuracy, and from the perspective of environmental protection, it can also reduce energy consumption, save energy and electricity, and avoid unnecessary waste.

Furthermore, the energy-saving coal dry separation system with multiple air sources for air supply of the present invention adopts an intelligent air-adjusting dust removal system. The intelligent air-adjusting dust removal system prefers a full bag dust collector, and abandons the cyclone dust removal and bag dust removal used in the original coal dry separation system. A dual-configuration solution for both. The original dust collector system of the coal dry separator is equipped with a cyclone dust collector and a bag dust collector. The cyclone dust collector has a large air volume and a small area. The air after it is continued to be used as circulating air. The direction of the dust removal path is that the main fan blows the air. It is led from the dust collector of the equipment and enters the cyclone dust collector through the pipeline. After removing large particles of dust in the cyclone dust collector, it enters the main fan, and then is fed to the air chamber by the main fan. From the air chamber, it is fed to the main selection bed and then into the suction bed. The dust hood is again sucked away by the main fan, and this cycle is repeated to ensure the air circulation of the dry selection machine equipment; the bag dust collector also draws air from the dust hood, with the purpose of generating negative pressure on the balanced air path. Prevent dust from spilling out. However, since the cyclone dust collector can only remove large particles of dust in the air path, those fine dusts have been circulating in a closed circuit with the wind, and there are more and more of them. Dust will emerge when the dry separator runs for a long time.

The energy-saving dry coal separation system with air supply from multiple air sources of the present invention adopts a full bag dust collector. All circulating air paths pass through the bag dust collector. The dust removal efficiency of the bag dust collector can reach more than 99% and can remove 99% of the air in the air path. of dust, completely realizing clean air coal separation, and the resistance of the bag dust collector is much smaller than that of the cyclone dust collector, which can reduce the energy consumption of the main fan motor and save energy.

As shown in Figure 2, the coal dry separation system with air supply uses a pentagonal intelligent vibrating main separation bed with three right-angled sides. The gangue movement direction advances along the lateral direction of the intelligent vibrating main separation bed, accurately The coal movement direction advances along the longitudinal direction of the intelligent vibrating main separation bed. The clean coal discharging section adopts a trapezoidal shape frame. Coal materials are intelligently delivered to the material inlet 21 of the intelligent vibrating main selection bed through the intelligent conveying device, and are transported to the primary sorting area 28 on the intelligent vibrating main selection bed through the material inlet 21. Multiple classifications are provided on the intelligent vibrating main selection bed. Select gradually higher grid strips b1, b2, b3,..., bn...; the gradually higher sorting grid strips are laid on the intelligent vibrating main selection bed, and the gradually higher sorting grid strips and the intelligent vibration main selection bed feed border are at a certain distance Select the included angle N, where the sorting angle N is an acute angle. The size of the sorting angle is set according to the coal composition or moisture in the mining area where the equipment is installed, thereby achieving the sorting index that adapts to local conditions and maximizes the sorting accuracy. The material inlet 21 is set at the edge of the feed frame of the intelligent vibrating main selection bed. Preferably, the highest point of the feed frame of the intelligent vibrating main selection bed overlaps with the highest point of the material inlet 21, so that the coal materials move along the intelligent vibrating main selection bed. The frame vibrates towards the frame of the waste stone discharge of the intelligent vibration main selection bed. The diagonal lines connecting the high points of the multiple gradually increasing grid bars b1, b2, b3,..., bn... and the frame of the intelligent vibration main selection bed present a certain material. The advancing angle M and the material advancing angle M are set according to the impurity content of the gangue of the coal being sorted on site, so as to maximize the sorting area of clean coal, medium coal and gangue. A gangue discharge channel is provided near the gangue discharge frame of the intelligent vibration main selection bed. The sorted gangue is discharged along the gangue discharge channel through the gangue discharge chute 24. A gangue overflow port is provided at the top of the gangue discharge frame of the intelligent vibration main selection bed. 26. The gangue overflow port 26 is used to quickly discharge large pieces of gangue or accumulated gangue; in addition, the energy-saving coal dry separation system with multiple air sources provides air, compared with the existing dry separation system, its coal sorting volume per unit time is higher. More than 30%, a large amount of gangue is produced in a short period of time. Therefore, a gangue discharge tube 25 is added to the side of the gangue discharge frame of the intelligent vibration main selection bed, so that the gangue discharge chute 24 and the gangue overflow outlet 26 have no time to discharge. Gangue can be discharged from the gangue discharge area 27 through the gangue discharge tube 25. A clean coal discharging chute 22, a medium coal discharging chute 23, and a gangue discharging chute 24 are respectively provided in the lower frame of the intelligent vibrating main selection bed. The clean coal discharging chute 22, medium coal discharging chute 23, The length of the sorting side occupied by the gangue discharge chute 24 and the like is determined according to the sorting area of the intelligent vibrating main sorting bed, the set vibration sorting vibration frequency, and the impurity content and moisture content of the coal. The intelligent vibration main selection bed sorting lower frame of the present invention has a broken line shape, that is, part of the intelligent vibration main selection bed sorting lower frame is perpendicular to the intelligent vibration main selection bed feed frame and parallel to the intelligent vibration main selection bed sorting upper frame. The lower frame of part of the intelligent vibrating main selection bed is folded upward in the clean coal sorting area and forms an obtuse angle with the gangue discharge frame of the intelligent vibrating main selection bed, which in turn shortens the gangue and clean coal travel and increases the processing capacity.

The energy-saving coal dry separation system with multiple air sources uses an intelligent vibrating main selection bed with a pentagonal shape with three right-angled sides. First, it shortens the lateral distance of the gangue discharge end and reduces the residence time of the gangue on the main selection bed. ;The second is to shorten the longitudinal distance of the clean coal discharge end, and extend the distance of an air chamber laterally from the front end of the main selection bed to the gangue end. This can basically ensure that the area of the clean coal discharge end remains unchanged. These changes are to reduce the material in the The main choice is the time spent on the bed. The lower corner is modified into a broken line trapezoid, which shortens the travel of gangue and clean coal and increases the processing capacity.

Further, as shown in Figure 2, the length of the lower frame of the intelligent vibration main selection bed that is perpendicular to the input frame of the intelligent vibration main selection bed and parallel to the upper frame of the intelligent vibration main selection bed is a3, and the length of the remaining intelligent vibration main selection bed is a3. The length of the lower border of the sorting bed is a4, and the ratio of the length is set according to the sorting amount of clean coal and the separation degree of clean coal. For example, the sorting coal is sorted into super clean coal, clean coal, medium coal, and medium coal containing impurities. Coal, gangue, etc., at this time, adjust the fold line length ratio of the lower border of the intelligent vibration main selection bed according to the user's needs; similarly, set the waste stone discharge frame of the intelligent vibration main selection bed according to the gangue moving speed and the drying speed of the coal sorting The length of the intelligent vibration main selection bed is a5; the feed frame of the intelligent vibration main selection bed is divided into a material inlet 21 part and a clean coal sorting side. The length of the material inlet 21 part is a1, and the length of the clean coal sorting side is a2. According to the transportation per unit time The amount of coal to the vibration sorting part is used to set the ratio between a1 and a2 of the feed frame of the intelligent vibration main selection bed. An intelligent vibration main selection bed frame is set at the gangue overflow outlet 26. The length of the gangue overflow outlet 26 is a6. The ratio between the length a6 and the length a7 of the remaining part of the intelligent vibration main selection bed frame is set according to the amount of gangue; optionally, For situations where the amount of waste stone discharged is relatively small, the waste stone overflow port 26 can be closed.

Further, a plurality of gradually increasing grid bars b1, b2, b3,..., bn... are arranged in parallel in sequence, and the high points b12, b22, b32,..., bn2... of each gradually increasing grid bar form A diagonal line (connected line). The diagonal line connecting each high point and the frame of the intelligent vibration main selection bed form a certain material advancement angle M. The low points b11, b21, b31,..., bn1... of each gradually higher grid bar are respectively It is connected to the intelligent vibration main selection bed feeding frame and the intelligent vibration main selection bed sorting lower frame. As shown in Figure 5, the increasingly high lattice bars are fixed on the bed panel, and the high point of each gradually high lattice bar is close to the intelligent vibration main selection bed back panel 41. The height of the high point of the gradually increasing grid is greater than the height of the low point of the gradually increasing grid.

The intelligent vibrating main selection bed panel of the present invention has progressively higher lattice bars. Compared with the existing equal-height bed panel lattice bars, the function of the lattice bars is that materials with high density can move upward along the lattice bars when the sorting bed is operating, so that The material forms an obvious boundary zone between high and low density materials on the sorting bed. The amount of material passing through the main selection bed of the present invention is very large. However, the existing grid bars have the problem that the height is much smaller than the thickness of the bed material and causes unstable movement trajectories of high-density materials. The existing grid bars are not suitable for handling large processing volumes. material sorting. The present invention adopts gradually higher grids as shown in Figure 5. The height of the grids from the back plate to the discharge side becomes lower and lower. This is beneficial to the stability of the movement trajectory of high-density materials when they are fed, diffused and impacted, and is also beneficial to low-density materials. Materials are discharged quickly at the discharge end.

As shown in Figures 2 and 3, the sorting air holes 31 are scattered all over the panel of the intelligent vibration main selection bed. The diameter of the sorting air holes close to the upper frame of the intelligent vibration main selection bed is gradually larger than that of the sorting holes close to the upper frame of the intelligent vibration main selection bed. The diameter of the sorting air hole at the bottom border of the sorting box. Specifically, as shown in Figure 3, the sorting air holes 31 and the intelligent vibration main selection bed panel are arranged at an angle, that is, the sorting air holes 31 and the intelligent vibration main selection bed panel are not arranged in a vertical relationship. The intelligent vibration main selection bed The wind direction in front of the bed panel is perpendicular to the intelligent vibration main selection bed panel, that is, the sorting airflow is vertically incident on the intelligent vibration main selection bed panel, and the sorted airflow after passing through the sorting air holes 31 exits from the bed panel Inclined ejection direction for sorting coal materials. Correspondingly, the partition boards of the bed panel are arranged at intervals between the sorting air holes 31 for adjusting the spacing of the air sorting holes 31 . The bed panel of the intelligent vibration main selection bed is preferably a bed panel 32 with sorting air holes. The existing traditional bed surface sorting air holes are vertical through holes, and the wind is blown out vertically through these small holes; in the intelligent vibration main selection bed of the present invention, the bed panel sorting air holes are changed to oblique holes, and the inclined direction is the discharge end, so that When the air flow blows out from these sorting holes, there is a force acting in the direction of the inclination and discharge. This force can accelerate the movement speed of the material on the bed surface. Preferably, only the first bed hole at the inlet end of the intelligent vibration main selection bed panel is changed to an inclined hole, and the tilt direction is the discharge end. The other intelligent vibration main selection bed panel adopts vertical sorting air holes for sorting air holes. .

Figure 4 is a longitudinal schematic side view of the intelligent vibrating main selection bed in Figure 1, and Figure 5 is a longitudinal schematic side view of the intelligent vibrating main selection bed equipped with sorting grids. As shown in Figures 4 and 5, the energy-saving coal dry separation system with air supply from multiple air sources adopts a back plate structure. The back plate is perpendicular to the intelligent vibration main selection bed panel, and the back plate 41 is set on the intelligent vibration main selection bed panel. on the sorting upper border and fixedly connected together. Optionally, the back panel 41 is detachably connected to the sorting upper frame of the intelligent vibration main bed panel 32 . As shown in Figure 6, the schematic diagram of the vibration direction of the back plate, the vibration direction of the bed plate is parallel to the longitudinal thrust on the coal material, that is, the coal material receives a downward longitudinal thrust under the dual effects of bed surface vibration and the back plate. The back plate and the ground form a certain angle α.

The intelligent vibration main selection bed panel of the present invention adopts a vertically arranged back plate to directly provide a longitudinal thrust to the coal materials being sorted. Compared with the traditional main selection bed, the angle between the back plate and the main selection bed surface is an acute angle of 60°--70°. Based on the sorting principle of the dry separator, it can be known that the function of the existing back plate is to keep the materials on the sorting bed. It has a turning effect; the present invention changes the angle of the back plate to a vertical 90°, so that during the sorting process, the dry sorting machine converts the original turning force into a thrust for the material to move forward, accelerating the movement of the material. The speed of movement on the bed surface.

Furthermore, as shown in Figure 4, a longitudinal angle monitor 1501 and a transverse angle monitor 1502 are installed on the sorting bed. The longitudinal angle monitor 1501 is used to monitor the longitudinal vibration angle and transverse angle of the intelligent vibration main selection bed. Monitor 1502 is used to monitor the lateral vibration angle of the intelligent vibrating main selection bed; it displays the angle parameters of the sorting bed in real time, which can more effectively cooperate with production to complete the automatic adjustment of the sorting bed, and greatly improves the energy saving of air supply from multiple air sources. Intelligentization of coal dry separation system.

As shown in Figures 7 and 8, the appearance view of the energy-saving coal dry separation system with multiple air sources and air supply installed with a quick access door is shown. The energy-saving coal dry separation system with air supply from multiple air sources further includes a fully enclosed dust collection hood. 11 and the quick access door 1101, the fully enclosed dust collecting cover 11 is buckled on the sorting part, realizing fully enclosed sorting; the quick access door 1101 is installed on the side of the upper cover of the sorting part, and daily operations are carried out through the quick access door 1101 Maintain and inspect the operation of equipment. A product chute 4 is installed under the intelligent vibrating main selection bed. The product chute 4 is divided into a clean coal unloading chute 22, a medium coal unloading chute 23 and a gangue unloading chute 24 according to the types of materials received. Further, the four sides of the fully enclosed dust collection hood 11 correspond to the four sides of the main selection bed 15. The two sides and the back of the fully enclosed dust collection hood are connected to the two sides and the back of the main selection bed 15 with dust filter cloths 1102. Ensure that no dust or gas escapes. Several quick access doors 1101 are provided in front of the fully enclosed dust hood 11. When you open the quick access doors 1101, you can directly reach the bed surface of the main bed 15, making it easy to carry out maintenance work. In addition, the fully enclosed dust hood 11 There is a pipe hole connected to the bag dust collector 10 at the top. The gas mixed with dust can enter the bag dust collector 10 through the pipe hole along the pipe for filtering and circulation.

Furthermore, two sets of pipe holes are provided on the fully enclosed dust collecting hood 11. The two sets of pipe holes are respectively connected to the full bag dust collector 10. A separate dust suction power system is provided in each pipe hole for use according to the intelligent The dust concentration difference in the upper space of the vibrating main bed is used to adjust the vacuum power of each pipe hole with a separate vacuum power system.

As shown in Figure 9, an intelligent material transport system is installed on the basis of Figure 8, and a belt scale 91 is installed under the belt conveyor 92 for power transportation of coal materials. The belt scale 91 is preferably an intelligent belt scale with a wireless transmission function. It can transmit the real-time transportation volume of coal materials to the central control platform in the central control room, and realize real-time material data analysis and control of coal sorting on the central control platform in the central control room.

As shown in Figure 1, the dust from the sorting space of the intelligent vibrating main bed in the pipe hole enters the full bag dust collector 10 through the dust removal pipe 12 and through the dust collector air inlet 9 sequentially. As shown in Figure 10, in the structure where dust enters the full bag dust collector 10 through the dust collector air inlet 9, the dust collector air inlet 9 is provided with a dust buffer device, preferably a pillow-shaped body for the dust buffer device, and the dust is in the pillow After buffering in the body, it enters the full bag dust collector 10. In this way, the lumpy particles contained in the dust from the sorting space of the intelligent vibration main selection bed can be buffered and fall in the pillow-shaped body and accumulated in the pillow-shaped body. A dust collector is installed on the side of the pillow-shaped body for air inlet inspection. The blind plate 8-3 and the dust collector air inlet inspection blind plate 8-3 are detachably installed on the side of the pillow-shaped body. By removing the dust collector air inlet inspection blind plate 8-3, the accumulated block particles can be cleaned. As shown in Figure 11, the air inlet pipe of the dust removal system of the energy-saving coal dry separation system with air supply from multiple air sources includes the dust collector air inlet horizontal pipe 8-1 and the dust collector air inlet connecting square pipe 8-2. The dust collector air inlet The horizontal pipe 8-1 constitutes the main part of the pillow-shaped body, and the dust collector air inlet connecting square pipe 8-2 is connected between the dust collector air inlet horizontal pipe 8-1 and the full bag dust collector 10.

As shown in Figure 12, the air blast sorting diagram of the energy-saving coal dry separation system with multiple air sources for air supply is shown. The air blast path is set below the intelligent vibrating main separation bed, and the air path is preferably adjacent to the discharge port of the sorted materials. adjacent. This facilitates the rational setting of on-site power layout and improves the utilization rate of on-site space. Furthermore, in the present invention, at least two air sources are used, so that the air supply conditions of each air channel can be adjusted respectively, thereby achieving on-demand air supply. And according to the air path set up in Figure 12, the inlet wind resistance is very small, which improves the wind efficiency.

To sum up, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A super energy-saving coal dry separation system with multiple air sources for air supply, characterized in that it includes a raw coal feeding part, an air supply part, a sorting part and a dust removal part, where the raw coal feeding part includes a product conveyor, a buffer Warehouse and intelligent conveying device, the sorting part includes the main machine bracket, the intelligent vibrating main selection bed, the main machine hanging and the discharge device, the air supply part includes the intelligent air adjustment system composed of the left main fan and the right main fan, and the dust removal part includes the intelligent air adjustment system. Wind dust removal system and intelligent air adjustment system have at least two air sources; The left main fan is connected to the left air divider through the left main fan damper, and the left air divider blows the separation air into the first group of sorting chambers; the right main fan is connected to the right air divider through the right main fan damper, and the right main fan is connected to the right air divider through the right main fan damper. The air distributor blows the sorting air into the second group of sorting chambers; a left maintenance observation window is set on the air duct where the left main fan sends it to the left air splitter through the left main fan damper, and the left maintenance observation window is set on the left main Between the fan damper and the left air distributor; In the intelligent vibrating main selection bed, more than 6 air chambers are set up under the main selection bed, and the air source is allocated according to the sorting parameters required by each air chamber; the intelligent main sorting bed device is hung on the host frame through the host machine. The bed selection device includes a main selection bed, and the discharge device is a material receiving chute located at the bottom of the intelligent main separation bed device; There are sorting air holes all over the panel of the intelligent vibration main selection bed. The diameter of the sorting air holes close to the upper frame of the intelligent vibration main selection bed is gradually larger than the diameter of the sorting air holes close to the lower frame of the intelligent vibration main selection bed. diameter; the sorting air holes and the intelligent vibration main selection bed panel are set at an angle, that is, the sorting air holes and the intelligent vibration main selection bed panel are not vertically set, and the intelligent vibration main selection bed panel is in front of the bed panel. The wind direction is perpendicular to the intelligent vibration main selection bed panel, that is, the sorting airflow is vertically incident on the intelligent vibration main selection bed panel, and the sorting airflow after passing through the sorting air holes is ejected from the bed panel at an angle to the sorted coal material; The partition boards of the bed panel are spaced between the sorting air holes to adjust the spacing of the air sorting holes; The intelligent air-adjusted dust removal system includes dust removal ducts, full bag dust collectors and bag induced draft fans. The fully enclosed dust collection hood installed on the upper part of the sorting part transports the dust generated in the sorting part to the air inlet of the dust collector through the dust removal duct. The impurity-containing or dust-containing gas from the air inlet of the device enters the full bag dust collector. The full bag dust collector is connected to the left main fan air inlet duct and the right main fan air inlet duct. The air inlet duct of the left main fan will pass through the full bag dust collector. The purified gas is transported back to the left main fan, and the air inlet duct of the right main fan transports the gas purified by the full bag dust collector back to the right main fan; The coal dry separation system adopts a pentagonal intelligent vibration main selection bed with three right-angled sides. The gangue movement direction is forward along the lateral direction of the intelligent vibration main selection bed, and the clean coal movement direction is along the intelligent vibration main selection bed. forward longitudinally; the length of the lower frame of the intelligent vibration main selection bed that is perpendicular to the intelligent vibration main selection bed feeding frame and parallel to the intelligent vibration main selection bed sorting upper frame is a3, and the length of the remaining intelligent vibration main selection bed sorting upper frame is a3 The length of the lower border of the bed sorting is a4, and the ratio of its length is set according to the sorting amount of clean coal and the separation degree of clean coal. The length ratio of the broken line of the lower border of the intelligent vibration main sorting bed is adjusted according to the needs of the user; according to the movement of the gangue speed and the drying speed of the sorted coal to set the length of the waste stone discharge frame of the intelligent vibration main selection bed a5; the feed frame of the intelligent vibration main selection bed is divided into a material inlet part and a clean coal sorting edge, and the length of the material inlet part is a1. The length of the clean coal sorting side is a2. The ratio between a1 and a2 of the feed frame of the intelligent vibration main selection bed is set according to the amount of coal transported to the vibration sorting part per unit time; intelligent vibration is set at the gangue overflow outlet. For the main selection bed frame, the length of the gangue overflow outlet is a6, and the ratio between the length a6 and the length a7 of the rest of the intelligent vibration main selection bed frame is set according to the amount of gangue; There are multiple gradually higher sorting grids b1, b2, b3,..., bn... arranged on the intelligent vibrating main selection bed; the gradually higher sorting grids are laid on the intelligent vibration main selection bed, and the gradually higher sorting grids and The feeding frame of the intelligent vibrating main sorting bed has a certain sorting angle N, in which the sorting angle N is an acute angle; the high points b12, b22, b32,..., bn2... of each gradually higher grid bar form a slope Line, the diagonal line connecting each high point and the border of the intelligent vibration main selection bed forms a certain material advancement angle M, and the low points b11, b21, b31,..., bn1... of each gradually higher grid bar are respectively connected with the intelligent vibration main selection bed. The feeding frame is connected to the lower frame of the intelligent vibrating main selection bed; the progressively higher grid bars are fixed on the bed panel, and the high point of each gradually higher grid bar is close to the intelligent vibration main selection bed backboard 41; the height of the progressively higher grid bars The height of the point is greater than the height of the low point of the rising grid. 2. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 1, characterized in that a right maintenance observation window is provided on the air duct where the right main fan is sent to the right air distributor through the right main fan damper. . 3. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 2, characterized in that, according to the different air volumes required for each part of the main selection bed in the intelligent vibrating main selection bed, differentiated air supply needs are achieved . 4. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 3, characterized in that the dust removal part also includes a bag induced draft fan, and the bag induced draft fan is connected to an induced draft fan chimney and an induced draft duct. The dust-containing gas is introduced into the bag dust collector, and part of the clean gas processed by the bag dust collector is discharged into the atmosphere through the induced draft fan chimney. 5. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 2, characterized in that the right maintenance observation window is provided between the right main fan damper and the right air divider. 6. The super energy-saving coal dry selection system with multiple air sources for air supply according to claim 5, characterized in that the discharge section of the clean coal adopts a trapezoidal shape frame; the intelligent vibration main selection bed panel adopts a vertically arranged back panel. The plate directly provides a longitudinal thrust to the coal materials being sorted. 7. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 6, characterized in that a longitudinal angle monitor and a transverse angle monitor are installed on the sorting bed, and the longitudinal angle monitor is used for monitoring. The longitudinal vibration angle of the intelligent vibration main selection bed and the transverse angle monitor are used to monitor the transverse vibration angle of the intelligent vibration main selection bed. 8. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 1, characterized in that a fully enclosed dust collecting cover is buckled on the sorting part to achieve fully enclosed sorting; a quick access door is installed on the sorting part. On the side of the upper cover of the selection part, daily maintenance and repair equipment operation is carried out through the quick access door; a product chute is installed under the intelligent vibration main selection bed. The product chute is divided into a clean coal unloading chute and a clean coal unloading chute according to the type of materials received. Medium coal unloading chute and gangue unloading chute; the four sides of the fully enclosed dust hood exactly correspond to the four sides of the main selection bed, and the two sides and rear of the fully enclosed dust hood are connected with the two sides of the main selection bed using dust filter cloths. It is connected to the back to ensure that no dust gas escapes; there are several quick access doors in front of the fully enclosed dust hood, and you can directly reach the main bed surface by opening the quick access doors; the top of the fully enclosed dust hood has Connect the pipe hole of the bag dust collector, and the gas mixed with dust passes through the pipe hole and enters the bag dust collector along the pipe for filtering and circulation. 9. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 8, characterized in that two sets of pipe holes are provided on the fully enclosed dust hood, and the two sets of pipe holes are respectively connected to the full bag dust collector. The device is equipped with a separate dust suction power system in each pipe hole, which is used to adjust the dust suction power of each pipe hole with a separate dust suction power system according to the dust concentration difference in the upper space of the intelligent vibration main selection bed. 10. The super energy-saving coal dry separation system with multiple air sources for air supply according to claim 9, characterized in that the dust from the intelligent vibrating main separation bed separation space of the pipe hole enters through the dust removal pipe in sequence through the air inlet of the dust collector. Full bag dust collector; in the structure where dust enters the full bag dust collector through the dust collector air inlet, the dust collector air inlet is provided with a pillow-shaped body for a dust buffering device, and the dust is buffered in the pillow-shaped body before entering the full bag dust collector ; The lumpy particles contained in the dust from the sorting space of the intelligent vibrating main selection bed are buffered, fall and accumulate in the pillow-shaped body. A blind plate for dust collector air inlet inspection is provided on the side of the pillow-shaped body. , the dust collector air inlet inspection blind plate can be detachably installed on the side of the pillow-shaped body, and the accumulated block particles can be cleaned by removing the dust collector air inlet inspection blind plate; the dust removal system of the super energy-saving coal dry selection system with multiple air sources for air supply The air inlet pipe includes a dust collector air inlet horizontal pipe and a dust collector air inlet connecting square pipe. The dust collector air inlet horizontal pipe forms the main part of the pillow-shaped body. The dust collector air inlet connecting square pipe is connected to the dust collector air inlet horizontal pipe. and full bag dust collector.