Dry conveying equipment for pulverized coal with water

Abstract

The invention provides dry conveying equipment for pulverized coal with water, which comprises a main case, and a heat exchange cavity, an exhaust cavity, a feeding cavity, a first-stage drying cavity and a second-stage drying cavity are sequentially arranged in the main case from top to bottom; a hot gas extraction fan; a heat exchanger; a feeding conveying belt; the water pressing assembly comprises a rectangular frame, a side pressing plate, a middle pressing plate and a crushing part; a first electric heating plate; the material scraping assembly is vertically arranged, the material scraping assembly is symmetrically installed on the surface of the first electric heating plate in a sliding mode, and the working modes of the material scraping assembly comprise a dispersing mode and a material gathering mode; the spiral conveyor is installed in the second-stage drying cavity and used for outputting dried pulverized coal, and a second electric heating plate is installed on the inner bottom face of the second-stage drying cavity; screening an output box; a three-stage heating and drying structure of the first-stage drying cavity, the second-stage drying cavity and the screening output box is designed, water in pulverized coal can be fully dried, and dry pulverized coal can be output for use.

Description

Technical Field

[0001] The invention relates to the technical field of dehydration treatment of coal powder with water, and in particular to dry-type conveying equipment for coal powder with water. Background Art

[0002] Three waste furnaces usually refer to special industrial boilers that can treat the "three wastes" (waste gas, waste water, and waste residue) in industrial production; the combustion raw materials of three waste furnaces are mostly pulverized coal, but the pulverized coal purchased at present is mostly in a wet state. In order to improve the combustion efficiency of pulverized coal, it is necessary to dry and dehydrate the pulverized coal first; the current drying and dehydration treatment equipment has the following shortcomings:

[0003] 1. When adding water-containing pulverized coal into the drying chamber, direct drying is often used. In this way, when the amount of water in the pulverized coal is large, the energy consumption of the drying equipment is relatively large;

[0004] 2. During the drying process, the water-containing coal powder is not evenly dispersed in the drying chamber and is mostly concentrated at the discharge port, resulting in low drying efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a dry type conveying device for coal powder with water, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A dry type conveying device for coal powder with water, comprising a main box, wherein a heat exchange chamber, an exhaust chamber, a feeding chamber, a primary drying chamber and a secondary drying chamber are arranged in sequence from top to bottom;

[0008] A hot air extraction fan is installed inside the exhaust chamber and is used to extract the hot air in the primary drying chamber to the heat exchange chamber;

[0009] A heat exchanger installed inside the heat exchange chamber;

[0010] The feeding conveyor belt is symmetrically arranged on both sides of the feeding chamber. A feeding hole is opened in the middle of the top surface of the first-stage drying chamber, and the output end of the feeding conveyor belt is located at the top of the feeding hole.

[0011] A water pressure assembly includes a rectangular frame, side pressure plates, a middle pressure plate, and a crushing component. The rectangular frame is arranged horizontally, and movable grooves are provided on the front and rear sides of the rectangular frame. The rectangular frame is vertically slidably installed inside the primary drying chamber, and a gap is left between the two ends of the rectangular frame and the primary drying chamber. The side pressure plates are symmetrically slidably installed inside the rectangular frame, and a middle pressure plate is rotatably installed in the middle of the rectangular frame. The middle pressure plate is relatively located below the feeding hole, and a crushing component is installed on the top surface of the middle pressure plate. Water absorption holes are provided on the bottom surface of the middle pressure plate and the bottom surface of the side pressure plates;

[0012] A first electric heating plate is arranged at the inner bottom of the primary drying chamber, a discharge hole is provided at the center of the first electric heating plate, and a blocking component is installed inside the discharge hole;

[0013] A scraper assembly is vertically arranged and symmetrically slidably mounted on the surface of the first electric heating plate. The working modes of the scraper assembly include an evacuation mode and a gathering mode.

[0014] A screw conveyor is installed inside the secondary drying chamber, and is used to output the dried coal powder. A second electric heating plate is installed on the inner bottom surface of the secondary drying chamber;

[0015] A screening output box, which has a feeding hole and an air inlet hole, wherein the feeding hole is connected to the output end of the screw conveyor, and the air inlet hole is connected to the heat exchanger;

[0016] Dry conveying equipment includes the following working conditions:

[0017] In the first state, the middle pressure plate is rotated and adjusted to a vertical state, and a lead-out gap is left between the crushing component of the middle pressure plate and a group of side pressure plates. The water-containing coal powder input from the feeding hole is discharged onto the first electric heating plate through the lead-out gap. The rotation of the crushing component can speed up the lead-out speed of the coal powder particles.

[0018] In the second state, the middle pressure plate rotates and adjusts to a horizontal state with the crushing parts facing upwards, the rectangular frame descends, the middle pressure plate and the side pressure plates simultaneously press down the coal powder on the first electric heating plate, and the water absorption holes absorb the pressed water;

[0019] In the third state, the scraper assembly is adjusted to the evacuation mode, the scraper assembly disperses and spreads the coal powder on the first electric heating plate and evacuates large-sized coal particles to the middle of the first electric heating plate, and the first electric heating plate dries the coal powder;

[0020] In the fourth state, the middle pressure plate is in a horizontal state and the crushing component is facing downward, the rectangular frame descends, and the crushing component crushes the large-sized coal particles in the middle of the first electric heating plate.

[0021] Furthermore, a spacing is left between the outer end of the side pressure plate and the rectangular frame, and a first movable block is provided on the side wall of the side pressure plate. The first movable block is slidably embedded in the two ends of the movable groove. The outer wall of the first movable block is connected to a water suction pump through a conduit. The water suction pump is connected to the water suction hole on the bottom surface of the side pressure plate, and the water suction pump is arranged on the side of the rectangular frame; a material guide plate is provided on the top surface of the side pressure plate at one end.

[0022] Furthermore, the side wall of the intermediate pressure plate is rotatably connected to the second moving block, the second moving block is slidably embedded in the middle of the moving groove, and a first motor for driving the intermediate pressure plate to rotate is disposed outside the second moving block.

[0023] Furthermore, the crushing component includes a first plate body, a second plate body and an upper crushing disk. The areas of the first plate body and the second plate body are the same as the area of ​​the medium pressure plate. The second plate body is arranged on the outer wall of the first plate body. A second motor is arranged inside the first plate body. The two sides of the first plate body are connected to the second moving blocks. Multiple groups of upper crushing disks are rotatably embedded inside the second plate body. The output end gear transmission of the second motor is connected to the upper crushing disk. The second motor is used to drive the multiple groups of upper crushing disks to rotate.

[0024] Furthermore, the scraper assembly includes a fixed plate, the bottom end of the side of the fixed plate is slidably connected to the main box, a rectangular accommodating hole is opened inside the fixed plate, a positioning strip is rotatably installed on the top of the inside of the accommodating hole, and a driven gear is installed at the rotating connection, the outer side of the driven gear is meshed and connected to the rack, the top of the rack is connected to the first driving rod, the first driving rod is fixed to the top side wall of the fixed plate, a sealing plate and an evacuation plate are vertically provided on the outer wall of the positioning strip, the sealing plate and the evacuation plate are arranged at right angles, and a rubber scraper strip is provided at the bottom end of the sealing plate; in the evacuation mode, the evacuation plate is placed in the accommodating hole; in the gathering mode, the sealing plate is placed in the accommodating hole.

[0025] Furthermore, the evacuation plate includes an inner strip plate, an outer strip plate, a second driving rod, a connecting plate and an evacuation rod. The inner strip plate is fixedly connected to the positioning bar, the outer side surface of the inner strip plate is horizontally slidably mounted with the outer strip plate, the outer wall of the outer strip plate is provided with multiple groups of evacuation rods, one end of the top surface of the outer strip plate is provided with a connecting plate, the surface of the inner strip plate is provided with a second driving rod, the output end of the second driving rod is connected to the connecting plate, and the second driving rod is used to drive the outer strip plate to move to change the evacuation position of the evacuation rod.

[0026] Furthermore, both ends of the rectangular frame are equipped with beating components, which include a rocker arm and a beating rod. One end of the rocker arm is rotatably connected to the rectangular frame and a third motor is installed at the rotating connection. The other end of the rocker arm is fixedly connected to the beating rod. The beating rod is located on the end face of the rectangular frame. The third motor is used to drive the rocker arm to rotate so that the beating rod beats the fixed plate to remove the coal ash on the outer wall of the scraper assembly.

[0027] Furthermore, the sealing assembly includes a sealing plate, a bottom plate and a lower box body. The surface of the bottom plate is provided with a sealing plate, which is embedded in the discharge hole. The bottom surface of the bottom plate is provided with a lower box body. A fourth motor is installed inside the lower box body. A lower crushing disk is rotatably embedded inside the sealing plate. The output end gear transmission of the fourth motor is connected to the lower crushing disk, and one end of the bottom plate is rotatably connected to the secondary drying chamber; the bottom plate is flipped downward to open the discharge hole; in the fourth state, the lower crushing disk cooperates with the upper crushing disk to crush large-sized coal particles.

[0028] Furthermore, the screening output box includes a main box body, a discharge inclined plate, a stirring impeller, a longitudinal screen plate and a transverse screen plate. An exhaust fan is installed on the top surface of the main box body, and the inlet end of the exhaust fan is connected to the heat exchanger. The discharge inclined plate is arranged at the top of the main box body, and the output end of the screw conveyor is connected to the top feeding end of the discharge inclined plate. A stirring impeller is installed at the bottom end of the discharge inclined plate, and a longitudinal screen plate is installed at the bottom of the stirring impeller. A transverse screen plate is installed at the bottom of the longitudinal screen plate, and a discharge conveyor belt is installed at the bottom end of the main box body; the air outlet of the exhaust fan is placed on the top of the discharge inclined plate, and the exhaust fan discharges hot air to the top of the discharge inclined plate to dry the coal ash in three stages; the stirring impeller is used to transport the coal ash in batches.

[0029] Furthermore, a crushing cone is provided on the bottom surface of the discharge inclined plate, and a dust raising plate is installed at the bottom of the stirring impeller. One end of the dust raising plate is rotatably placed in the main box, and the other end of the dust raising plate extends to the bottom of the crushing cone of the discharge inclined plate; the dust raising plate is used to intermittently rotate upward to raise the coal ash, and the coal ash is crushed by the crushing cone.

[0030] The present invention provides a dry type conveying device for coal powder with water. Compared with the prior art, it has the following beneficial effects:

[0031] 1. The three-stage heating and drying structure of the first-stage drying chamber, the second-stage drying chamber and the screening output box is designed to fully dry the water in the coal powder to obtain dry coal powder for output;

[0032] 2. The design of the scraper assembly has two modes, which have the following effects: the scraper assembly in the evacuation mode can disperse the coal powder on the first electric heating plate, so that the coal powder is evenly spread on the first electric heating plate; when the first electric heating plate is heating the coal powder, the scraper assembly in the evacuation mode can continuously stir the coal powder, so that the coal powder dries faster, and the heated steam can be stirred and dispersed quickly, and then exported through the gaps at both ends of the rectangular frame, the feeding holes, and the exhaust chamber; when evacuating, the scraper assembly can also comb out large-sized coal particles to the middle of the first electric heating plate for subsequent centralized crushing; when unloading, the scraper assembly can be adjusted to the blocking mode, and the scraper assembly can push the coal powder to the discharge hole, so that the coal powder is discharged to the secondary drying chamber through the discharge hole;

[0033] 3. The design of the water pressure assembly has the following effects: when the wet coal powder is fed, the middle pressure plate can be rotated and adjusted to a vertical state, and a lead-out gap can be left between the middle pressure plate and the side pressure plate, so that the coal powder entering the feeding hole can be led out to the first electric heating plate through the lead-out gap to achieve feeding; at the same time, the crushing component is placed in the lead-out gap, which can speed up the feeding speed and avoid coal powder blockage; when the water is pressed, the middle pressure plate and the side pressure plate cooperate to form a lower pressure surface, so that when the rectangular frame descends, the middle pressure plate and the side pressure plate can synchronously squeeze the wet coal powder, so that the water in the wet coal powder is sucked out by the water absorption hole, so that the pretreatment of the wet coal powder can be achieved, and the working energy consumption of the first electric heating plate can be reduced; after combing for a period of time, the middle pressure plate can be rotated and adjusted to the crushing component facing downward, so that the crushing component can crush the large-sized particles combed in the middle;

[0034] 4. The first-stage dried coal powder is discharged into the screw conveyor, which transports the coal powder. The second electric heating plate dries the coal powder being transported.

[0035] 5. The screening output box can filter out larger coal particles, allowing qualified coal powder to be output. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 The schematic diagram of the structure of the dry type conveying equipment for coal powder with water of the present invention is shown;

[0038] Figure 2 A schematic diagram of the internal side cross-sectional structure of the mainframe box of the present invention is shown;

[0039] Figure 3 A schematic diagram of the cross-sectional structure of a water pressure assembly of the present invention is shown;

[0040] Figure 4 The schematic diagram of the structure of the crushing component of the present invention is shown;

[0041] Figure 5 It shows a schematic structural diagram of the state in which the middle pressure plate and the side pressure plates of the present invention leave a lead-out gap;

[0042] Figure 6 The schematic diagram of the structure of the scraper assembly of the present invention is shown;

[0043] Figure 7 A schematic diagram of the connection structure between the evacuation plate and the sealing plate of the present invention is shown;

[0044] Figure 8 A schematic diagram of the structure of the plugging assembly of the present invention is shown;

[0045] Fig. 9 The schematic diagram of the internal structure of the screening output box of the present invention is shown;

[0046] As shown in the figure: 1. main box, 11. heat exchange chamber, 12. exhaust chamber, 121. hot air extraction fan, 13. feeding chamber, 14. primary drying chamber, 141. feeding hole, 142. first electric heating plate, 143. discharge hole, 15. secondary drying chamber, 151. second electric heating plate, 2. feeding conveyor belt, 3. water pressure assembly, 31. rectangular frame, 311. moving groove, 32. side pressure plate, 321. first moving block, 33. middle pressure plate, 331. second moving block, 332. first motor, 34. water suction hole, 35. water suction pump, 36. crushing component, 361. first plate body, 362. second plate body, 363. upper crushing disk, 364. second motor, 37. guide plate, 4. scraper assembly, 41. fixed plate, 411. receiving hole , 42. Rubber scraper, 43. Positioning strip, 431. Driven gear, 44. First drive rod, 441. Rack, 45. Sealing plate, 46. Evacuation plate, 461. Inner strip, 462. Outer strip, 463. Evacuation rod, 464. Connecting plate, 465. Second drive rod, 5. Beating component, 51. Rocker, 52. Beating rod, 53. Third motor, 6. Sealing assembly, 61. Sealing plate, 62. Bottom plate, 63. Lower box body, 64. Fourth motor, 65. Lower crushing disk, 7. Screw conveyor, 8. Screening output box, 81. Main box body, 82. Exhaust fan, 83. Unloading inclined plate, 831. Crushing cone, 84. Agitating impeller, 85. Ash raising plate, 86. Vertical screen plate, 87. Horizontal screen plate, 88. Discharging conveyor belt, 9. Heat exchanger. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In order to solve the technical problems in the background technology, a dry type conveying equipment for coal powder with water is provided as follows:

[0049] Combination Figure 1-Figure 9 As shown, a dry type conveying device for coal powder with water provided by the present invention comprises a main box 1, wherein a heat exchange chamber 11, an exhaust chamber 12, a feeding chamber 13, a primary drying chamber 14 and a secondary drying chamber 15 are sequentially arranged inside the main box 1 from top to bottom;

[0050] The hot air extraction fan 121 is installed inside the exhaust chamber 12. The hot air extraction fan 121 is used to extract the hot air from the primary drying chamber.

[0051] The hot gas in 14 goes to the heat exchange chamber 11;

[0052] A heat exchanger 9 is installed inside the heat exchange chamber 11;

[0053] The feeding conveyor belt 2 is symmetrically arranged on both sides of the feeding chamber 13. A feeding hole 141 is opened in the middle of the top surface of the primary drying chamber 14. The output end of the feeding conveyor belt 2 is located at the top of the feeding hole 141.

[0054] The water pressure assembly 3 includes a rectangular frame 31, a side pressure plate 32, a middle pressure plate 33, and a crushing component 36. The rectangular frame 31 is arranged horizontally, and a movable groove 311 is provided on the front and rear sides of the rectangular frame 31. The rectangular frame 31 is vertically slidably installed inside the primary drying chamber 14. A gap is left between the two ends of the rectangular frame 31 and the primary drying chamber 14. The side pressure plates 32 are symmetrically slidably installed inside the rectangular frame 31, and the middle pressure plate 33 is rotatably installed in the middle of the rectangular frame 31. The middle pressure plate 33 is relatively located below the feeding hole 141. The crushing component 36 is installed on the top surface of the middle pressure plate 33, and the bottom surfaces of the middle pressure plate 33 and the side pressure plates 32 are provided with water absorption holes 34;

[0055] A first electric heating plate 142 is disposed at the inner bottom of the primary drying chamber 14. A discharge hole 143 is provided at the center of the first electric heating plate 142. A blocking component 6 is installed inside the discharge hole 143.

[0056] The scraper assembly 4 is vertically arranged and symmetrically slidably mounted on the surface of the first electric heating plate 142. The working modes of the scraper assembly 4 include an evacuation mode and a gathering mode.

[0057] A screw conveyor 7 is installed inside the secondary drying chamber 15. The screw conveyor 7 is used to output the dried coal powder. A second electric heating plate 151 is installed on the inner bottom surface of the secondary drying chamber 15.

[0058] A screening output box 8, which has a feeding hole and an air inlet, the feeding hole is connected to the output end of the screw conveyor 7, and the air inlet is connected to the heat exchanger 9;

[0059] Dry conveying equipment includes the following working conditions:

[0060] In the first state, the middle pressure plate 33 is rotated and adjusted to a vertical state, and a lead-out gap is left between the crushing component 36 of the middle pressure plate 33 and a group of side pressure plates 32, and the water-containing coal powder input from the feeding hole 141 is discharged to the first electric heating plate 142 through the lead-out gap, and the crushing component 36 crushes the coal powder particles in the lead-out gap;

[0061] In the second state, the middle pressure plate 33 rotates and adjusts to a horizontal state with the crushing component 36 facing upward, the rectangular frame 31 descends, the middle pressure plate 33 and the side pressure plate 32 simultaneously press down the coal powder on the first electric heating plate 142, and the water absorption hole 34 absorbs the pressed water;

[0062] In the third state, the scraper assembly 4 is adjusted to the evacuation mode, the scraper assembly 4 disperses and spreads the coal powder on the first electric heating plate 142 and evacuates large-sized coal particles to the middle of the first electric heating plate 142, and the first electric heating plate 142 dries the coal powder;

[0063] In the fourth state, the middle pressure plate 33 is in a horizontal state and the crushing component 36 faces downward, the rectangular frame 31 descends, and the crushing component 36 crushes the large-sized coal particles in the middle of the first electric heating plate 142 .

[0064] In the above scheme:

[0065] 1. The three-stage heating and drying structure of the first-stage drying chamber 14, the second-stage drying chamber 15 and the screening output box is designed to fully dry the water in the coal powder to obtain dry coal powder for output;

[0066] 2. The design of the scraper assembly 4 has two modes, which have the following effects:

[0067] 2.1. The scraper assembly 4 in the evacuation mode can disperse the coal powder on the first electric heating plate 142 so that the coal powder is evenly spread on the first electric heating plate 142;

[0068] 2.2. When the first electric heating plate 142 heats the coal powder, the scraper assembly 4 in the evacuation mode can continuously stir the coal powder, so that the coal powder is dried faster, and the heated steam can be stirred and quickly dispersed, and then exported through the gaps at both ends of the rectangular frame 31, the feeding hole 141, and the exhaust chamber 12;

[0069] 2.3. When evacuating, the scraper assembly 4 can also sort out large-sized coal particles to the middle of the first electric heating plate 142 for subsequent centralized crushing;

[0070] 2.4. During unloading, the scraper assembly 4 can be adjusted to the blocking mode, and the scraper assembly 4 can push the coal powder to the discharge hole 143, so that the coal powder is discharged into the secondary drying chamber 15 through the discharge hole 143;

[0071] 3. The design of the water pressure assembly 3 has the following effects:

[0072] 3.1. When the wet coal powder is fed, the middle pressure plate 33 can be rotated and adjusted to a vertical state, and a lead-out gap can be left between the middle pressure plate 33 and the side pressure plate 32, so that the coal powder entering the feeding hole 141 can be led out to the first electric heating plate 142 through the lead-out gap to achieve feeding; at the same time, the crushing component 36 is placed in the lead-out gap, which can speed up the feeding speed and avoid coal powder blockage;

[0073] 3.2. When pressing water, the middle pressure plate 33 and the side pressure plate 32 cooperate to form a lower pressure surface. In this way, when the rectangular frame 31 descends, the middle pressure plate 33 and the side pressure plate 32 can simultaneously squeeze the wet coal powder, so that the water in the wet coal powder is sucked out by the water absorption hole 34, so that the wet coal powder can be pre-treated and the working energy consumption of the first electric heating plate 142 can be reduced;

[0074] 3.3. After combing for a period of time, the middle pressure plate 33 can be rotated and adjusted to the crushing component 36 facing downward, so that the crushing component 36 can crush the large-sized particles combed in the middle;

[0075] 4. The primary dried coal powder is discharged into the screw conveyor 7. The screw conveyor 7 conveys the coal powder, and the second electric heating plate 151 dries the coal powder being conveyed;

[0076] 5. The screening output box 8 can filter out larger coal particles, allowing qualified coal powder to be output.

[0077] In this embodiment, a gap is left between the outer end of the side pressure plate 32 and the rectangular frame 31, and the side wall of the side pressure plate 32 is provided with a first movable block 321, which is slidably embedded in the two ends of the movable groove 311, and the outer wall of the first movable block 321 is connected to the water suction pump 35 through a conduit, and the water suction pump 35 is connected to the water suction hole 34 on the bottom surface of the side pressure plate 32, and the water suction pump 35 is arranged on the side of the rectangular frame 31; the side wall of the middle pressure plate 33 is rotatably connected to the second movable block 331, and the second movable block 331 is slidably embedded in the middle of the movable groove 311, and the outside of the second movable block 331 is provided with a first motor 332 for driving the middle pressure plate 33 to rotate; the top surface of the side pressure plate at one end is provided with a material guide plate 37.

[0078] In the above scheme:

[0079] 1. The water absorption holes 34 on the bottom surfaces of the side pressure plate 32 and the middle pressure plate 33 are connected to the water absorption pump 35 to absorb the squeezed water;

[0080] 2. The first moving block 321 of the side pressure plate 32 can move along the moving groove 311, thereby meeting the rotation adjustment requirements of the middle pressure plate 33;

[0081] 3. The second moving block 331 of the middle pressure plate 33 can move along the moving groove 311 to meet the needs of unloading. The middle pressure plate 33 moves so that the lead-out gap is arranged relative to the feeding hole 141. The first motor 332 can drive the middle pressure plate 33 to rotate, so that the middle pressure plate 33 can rotate and switch between three modes.

[0082] In this embodiment, the crushing component 36 includes a first plate body 361, a second plate body 362 and an upper crushing disk 363. The areas of the first plate body 361 and the second plate body 362 are the same as the area of ​​the medium pressure plate 33. The second plate body 362 is arranged on the outer wall of the first plate body 361. A second motor 364 is arranged inside the first plate body 361. The two sides of the first plate body 361 are connected to the second moving block 331. The interior of the second plate body 362 is rotatably embedded with multiple groups of upper crushing disks 363. The output end gear transmission of the second motor 364 is connected to the upper crushing disk 363. The second motor 364 is used to drive the multiple groups of upper crushing disks 363 to rotate.

[0083] In the above scheme: the second motor 364 can drive the upper crushing disk 363 to rotate, so that the upper crushing disk 363 can rotate to crush the coal powder, and the first motor 332 can drive the first plate to rotate. The surface of the upper crushing disk 363 is distributed with crushing teeth.

[0084] In this embodiment, the scraper assembly 4 includes a fixed plate 41, the bottom end of the side of the fixed plate 41 is slidably connected to the main chassis 1, a rectangular accommodating hole 411 is opened inside the fixed plate 41, a positioning bar 43 is rotatably installed on the top of the inside of the accommodating hole 411, and a driven gear 431 is installed at the rotating connection, the outer side of the driven gear 431 is meshed and connected to the rack 441, the top of the rack 441 is connected to the first driving rod 44, the first driving rod 44 is fixed to the top side wall of the fixed plate 41, the outer wall of the positioning bar 43 is vertically provided with a sealing plate 45 and an evacuation plate 46, the sealing plate 45 and the evacuation plate 46 are distributed at right angles, and a rubber scraper strip 42 is provided at the bottom end of the sealing plate; in the evacuation mode, the evacuation plate 46 is placed in the accommodating hole 411; in the gathering mode, the sealing plate 61 is placed in the accommodating hole 411.

[0085] In the above scheme:

[0086] 1. When the fixed plate 41 moves, the rubber scraper 42 contacts the first electric heating plate 142, so that the coal powder on the first electric heating plate 142 can be cleaned and the first electric heating plate 142 can be avoided from being scratched;

[0087] 2. Design an L-shaped sealing plate 45 and an evacuation plate 46 with an integrated structure. When in the gathering mode, the sealing plate 61 is placed in the accommodating hole 411, and the evacuation plate 46 is placed on the inner side of the fixed plate 41; when in the evacuation mode, the first driving rod 44 contracts, thereby driving the rack 441 to move upward, and the rack 441 drives the driven gear 431 to rotate, so that the evacuation plate 46 is placed in the accommodating hole 411, the sealing plate 61 is placed on the outer side of the fixed plate 41, and the evacuation plate 46 is inserted into the coal seam, so that when the fixed plate 41 moves, the evacuation plate 46 can evacuate and stir the coal powder.

[0088] In this embodiment, the evacuation plate 46 includes an inner strip plate 461, an outer strip plate 462, a second driving rod 465, a connecting plate 464 and an evacuation rod 463. The inner strip plate 461 is fixedly connected to the positioning strip 43, and the outer side surface of the inner strip plate 461 is horizontally slidably installed with the outer strip plate 462. The outer wall of the outer strip plate 462 is provided with multiple groups of evacuation rods 463, and a connecting plate 464 is provided at one end of the top surface of the outer strip plate 462. The surface of the inner strip plate 461 is provided with a second driving rod 465, and the output end of the second driving rod 465 is connected to the connecting plate 464. The second driving rod 465 is used to drive the outer strip plate 462 to move to change the evacuation position of the evacuation rod 463.

[0089] In the above scheme, in order to increase the evacuation range of the evacuation plate 46, the second driving rod 465 can drive the outer strip plate 462 to move, thereby changing the position of the evacuation rod 463, so that the movement path of the evacuation rod 463 is different each time evacuation occurs.

[0090] In this embodiment, both ends of the rectangular frame 31 are equipped with a beating component 5, and the beating component 5 includes a rocker arm 51 and a beating rod 52. One end of the rocker arm is rotatably connected to the rectangular frame and a third motor is installed at the rotating connection. The other end of the rocker arm is fixedly connected to the beating rod. The beating rod 52 is located on the end face of the rectangular frame 31. The third motor 53 is used to drive the rocker arm 51 to rotate so that the beating rod 52 beats the fixed plate 41 to remove the coal ash on the outer wall of the scraper assembly.

[0091] In the above scheme: after the coal powder is pushed out, a lot of coal ash will adhere to the inner wall of the fixed plate 41. In order to eliminate the coal powder, the fixed plate 41 moves to the rotation path of the flapping rod 52, and the third motor 53 can drive the rocker arm 51 to rotate downward. The flapping rod 52 can collide with the fixed plate 41, so that the coal powder on the fixed plate 41, the blocking plate 61 and the evacuation plate 46 falls off; when not in use, the flapping rod 52 is placed at the end of the rectangular frame 31 and the rocker arm 51 is placed on the side of the rectangular frame 31, which will not affect the descent of the rectangular frame 31.

[0092] In this embodiment, the sealing assembly 6 includes a sealing plate 61, a bottom plate 62 and a lower box body 63. The surface of the bottom plate 62 is provided with a sealing plate 61, and the sealing plate 61 is embedded in the discharge hole 143. The bottom surface of the bottom plate 62 is provided with a lower box body 63. The interior of the lower box body 63 is installed with a fourth motor 64. The interior of the sealing plate 61 is rotatably embedded with a lower crushing disk. The output end of the fourth motor 64 is gear-connected to the lower crushing disk 65. One end of the bottom plate 62 is rotatably connected to the secondary drying chamber 15. The bottom plate 62 is flipped downward to open the discharge hole 143. In the fourth state, the lower crushing disk cooperates with the upper crushing disk 363 to crush large-sized coal particles.

[0093] In the above scheme: the structure of the lower crushing disk is the same as that of the upper crushing disk 363, and the upper crushing disk 363 cooperates with the lower crushing disk to crush the large-sized coal particles in the middle; when unloading, the fourth motor 64 can drive the bottom plate 62 to rotate, so that the sealing plate 61 is separated from the discharge hole 143, and the coal powder can be discharged to the screw conveyor.

[0094] In this embodiment, the screening output box 8 includes a main box body 81, a discharge inclined plate 83, a stirring impeller 84, a longitudinal sieve plate 86 and a transverse sieve plate 87. An exhaust fan 82 is installed on the top surface of the main box body 81, and the inlet end of the exhaust fan 82 is connected to the heat exchanger 9. The discharge inclined plate 83 is arranged at the top of the main box body 81, and the output end of the screw conveyor 7 is connected to the top feeding end of the discharge inclined plate 83. A stirring impeller 84 is installed at the bottom end of the discharge inclined plate 83, and a longitudinal sieve plate 86 is installed at the bottom of the stirring impeller 84. A transverse sieve plate 87 is installed at the bottom of the longitudinal sieve plate, and a discharge conveyor belt 88 is installed at the bottom end of the main box body 81; the air outlet of the exhaust fan 82 is placed on the top of the discharge inclined plate 83, and the exhaust fan 82 discharges hot air to the top of the discharge inclined plate 83 to dry the coal ash in three stages; the stirring impeller 84 is used to transport the coal ash in batches.

[0095] In the above scheme: the hot air extraction fan 121 extracts hot air to the heat exchange chamber 11, so that the heat exchanger 9 in the heat exchange chamber 11 can be heated, and the air sucked by the exhaust fan 82 can be heat-exchanged by the heat exchanger 9, and the waste heat of the pulverized coal steam can heat the air in the heat exchanger 9, and the heated air is discharged downward to the unloading inclined plate 83, so that the pulverized coal on the unloading inclined plate 83 can be heated;

[0096] The coal powder is discharged to the stirring impeller 84, and the stirring impeller 84 can output at intervals to avoid blockage caused by concentrated output. The output coal powder passes through the longitudinal screen plate and the transverse screen plate in turn, so that large-sized coal particles are filtered out, so that qualified coal powder is output through the discharge conveyor belt 88.

[0097] In this embodiment, a crushing cone 831 is provided on the bottom surface of the discharge inclined plate 83, and a dust raising plate 85 is installed at the bottom of the stirring impeller 84. One end of the dust raising plate 85 is rotatably placed in the main box body 81, and the other end of the dust raising plate 85 extends to the bottom of the crushing cone 831 of the discharge inclined plate 83; the dust raising plate 85 is used to intermittently rotate upward to raise the coal ash, and the coal ash is crushed by the crushing cone 831.

[0098] In the above scheme, in order to crush the coal powder again, the coal powder output in batches by the stirring impeller will be discharged onto the dust plate, and then the dust plate will rotate upward first, and then rotate downward to a vertical state, so that the coal powder will impact the crushing cone 831. In this way, the coal powder is crushed by the crushing cone 831, and the crushed coal powder can be dispersed and fall onto the longitudinal screen plate.

[0099] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dry type conveying equipment for coal powder with water, characterized in that: include: The main box has a heat exchange chamber, an exhaust chamber, a loading chamber, a primary drying chamber and a secondary drying chamber arranged from top to bottom; A hot air extraction fan is installed inside the exhaust chamber and is used to extract the hot air in the primary drying chamber to the heat exchange chamber; A heat exchanger installed inside the heat exchange chamber; The feeding conveyor belt is symmetrically arranged on both sides of the feeding chamber. A feeding hole is opened in the middle of the top surface of the first-stage drying chamber, and the output end of the feeding conveyor belt is located at the top of the feeding hole. A water pressure assembly includes a rectangular frame, side pressure plates, a middle pressure plate, and a crushing component. The rectangular frame is arranged horizontally, and movable grooves are provided on the front and rear sides of the rectangular frame. The rectangular frame is vertically slidably installed inside the primary drying chamber, and a gap is left between the two ends of the rectangular frame and the primary drying chamber. The side pressure plates are symmetrically slidably installed inside the rectangular frame, and a middle pressure plate is rotatably installed in the middle of the rectangular frame. The middle pressure plate is relatively located below the feeding hole, and a crushing component is installed on the top surface of the middle pressure plate. Water absorption holes are provided on the bottom surface of the middle pressure plate and the bottom surface of the side pressure plates; A first electric heating plate is arranged at the inner bottom of the primary drying chamber, a discharge hole is provided at the center of the first electric heating plate, and a blocking component is installed inside the discharge hole; A scraper assembly is vertically arranged and symmetrically slidably mounted on the surface of the first electric heating plate. The working modes of the scraper assembly include an evacuation mode and a gathering mode. A screw conveyor is installed inside the secondary drying chamber, and is used to output the dried coal powder. A second electric heating plate is installed on the inner bottom surface of the secondary drying chamber; A screening output box, which has a feeding hole and an air inlet hole, wherein the feeding hole is connected to the output end of the screw conveyor, and the air inlet hole is connected to the heat exchanger; Dry conveying equipment includes the following working conditions: In the first state, the middle pressure plate is rotated and adjusted to a vertical state, and a lead-out gap is left between the crushing component of the middle pressure plate and a group of side pressure plates. The water-containing coal powder input from the feeding hole is discharged onto the first electric heating plate through the lead-out gap. The rotation of the crushing component can speed up the lead-out speed of the coal powder particles. In the second state, the middle pressure plate rotates and adjusts to a horizontal state with the crushing parts facing upwards, the rectangular frame descends, the middle pressure plate and the side pressure plates simultaneously press down the coal powder on the first electric heating plate, and the water absorption holes absorb the pressed water; In the third state, the scraper assembly is adjusted to the evacuation mode, the scraper assembly disperses and spreads the coal powder on the first electric heating plate and evacuates large-sized coal particles to the middle of the first electric heating plate, and the first electric heating plate dries the coal powder; In the fourth state, the middle pressure plate is in a horizontal state and the crushing component is facing downward, the rectangular frame descends, and the crushing component crushes the large-sized coal particles in the middle of the first electric heating plate.

2. The dry type conveying equipment for coal powder with water according to claim 1 is characterized in that: There is a gap between the outer end of the side pressure plate and the rectangular frame, and a first movable block is provided on the side wall of the side pressure plate. The first movable block is slidably embedded in the two ends of the movable groove. The outer wall of the first movable block is connected to a water suction pump through a conduit. The water suction pump is connected to the water suction hole on the bottom surface of the side pressure plate, and the water suction pump is arranged on the side of the rectangular frame; a material guide plate is provided on the top surface of the side pressure plate at one end.

3. The dry type conveying equipment for coal powder with water according to claim 2 is characterized in that: The side wall of the middle pressure plate is rotatably connected to the second moving block, the second moving block is slidably embedded in the middle of the moving groove, and a first motor for driving the middle pressure plate to rotate is arranged outside the second moving block.

4. The dry type conveying equipment for coal powder with water according to claim 3 is characterized in that: The crushing component includes a first plate body, a second plate body and an upper crushing disk. The areas of the first plate body and the second plate body are the same as the area of ​​the intermediate pressure plate. The second plate body is arranged on the outer wall of the first plate body. A second motor is arranged inside the first plate body. The two sides of the first plate body are connected to the second moving blocks. Multiple groups of upper crushing disks are rotatably embedded inside the second plate body. The output end gear transmission of the second motor is connected to the upper crushing disk. The second motor is used to drive the multiple groups of upper crushing disks to rotate.

5. The dry type conveying equipment for coal powder with water according to claim 4 is characterized in that: The scraper assembly includes a fixed plate, the bottom end of the side of the fixed plate is slidably connected to the main box, a rectangular receiving hole is opened inside the fixed plate, a positioning strip is rotatably installed on the top of the inside of the receiving hole, and a driven gear is installed at the rotating connection, the outer side of the driven gear is meshed and connected to the rack, the top of the rack is connected to the first driving rod, the first driving rod is fixed to the top side wall of the fixed plate, a sealing plate and an evacuation plate are vertically provided on the outer wall of the positioning strip, the sealing plate and the evacuation plate are arranged at right angles, and a rubber scraper strip is provided at the bottom end of the sealing plate; in the evacuation mode, the evacuation plate is placed in the receiving hole; in the gathering mode, the sealing plate is placed in the receiving hole.

6. The dry type conveying equipment for coal powder with water according to claim 5, characterized in that: The evacuation plate includes an inner strip plate, an outer strip plate, a second driving rod, a connecting plate and an evacuation rod. The inner strip plate is fixedly connected to the positioning bar, the outer side surface of the inner strip plate is horizontally slidably mounted with the outer strip plate, the outer wall of the outer strip plate is provided with multiple groups of evacuation rods, one end of the top surface of the outer strip plate is provided with a connecting plate, the surface of the inner strip plate is provided with a second driving rod, the output end of the second driving rod is connected to the connecting plate, and the second driving rod is used to drive the outer strip plate to move to change the evacuation position of the evacuation rod.

7. The dry type conveying equipment for coal powder with water according to claim 6 is characterized in that: Both ends of the rectangular frame are equipped with beating components, which include a swing rod and a beating rod. One end of the swing rod is rotatably connected to the rectangular frame and a third motor is installed at the rotating connection. The other end of the swing rod is fixedly connected to the beating rod. The beating rod is located on the end face of the rectangular frame. The third motor is used to drive the swing rod to rotate so that the beating rod beats the fixed plate to remove the coal ash on the outer wall of the scraper assembly.

8. The dry type conveying equipment for coal powder with water according to claim 7, characterized in that: The sealing assembly includes a sealing plate, a bottom plate and a lower box body. The surface of the bottom plate is provided with a sealing plate, which is embedded in the discharge hole. The bottom surface of the bottom plate is provided with a lower box body. The fourth motor is installed inside the lower box body. The lower crushing disk is rotatably embedded inside the sealing plate. The output end of the fourth motor is gear-connected to the lower crushing disk. One end of the bottom plate is rotatably connected to the secondary drying chamber. The bottom plate is flipped downward to open the discharge hole. In the fourth state, the lower crushing disk cooperates with the upper crushing disk to crush large-sized coal particles.

9. The dry type conveying equipment for coal powder with water according to claim 8, characterized in that: The screening output box includes a main box body, a discharge inclined plate, a stirring impeller, a longitudinal screen plate and a transverse screen plate. An exhaust fan is installed on the top surface of the main box body, and the inlet end of the exhaust fan is connected to the heat exchanger. The discharge inclined plate is arranged at the top of the main box body, and the output end of the screw conveyor is connected to the top feeding end of the discharge inclined plate. A stirring impeller is installed at the bottom end of the discharge inclined plate, and a longitudinal screen plate is installed at the bottom of the stirring impeller. A transverse screen plate is installed at the bottom of the longitudinal screen plate, and a discharge conveyor belt is installed at the bottom end of the main box body; the air outlet of the exhaust fan is placed on the top of the discharge inclined plate, and the exhaust fan discharges hot air to the top of the discharge inclined plate to dry the coal ash in three stages; the stirring impeller is used to transport the coal ash in batches.

10. The dry type conveying equipment for coal powder with water according to claim 9, characterized in that: A crushing cone is provided on the bottom surface of the discharge inclined plate, and a dust raising plate is installed at the bottom of the stirring impeller. One end of the dust raising plate is rotatably placed in the main box, and the other end of the dust raising plate extends to the bottom of the crushing cone of the discharge inclined plate; the dust raising plate is used to intermittently rotate upward to raise the coal ash, and the coal ash is crushed by the crushing cone.

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