Water-coal dry conveying device

Abstract

The application provides a water-coal dry conveying device, which comprises a main box, 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 box from top to bottom, a hot air extraction fan, a heat exchanger, a feeding belt, a water-pressing assembly, a first electric heating plate, a material scraping assembly, a spiral conveyor, a second electric heating plate and a screening output box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water-containing coal powder dehydration treatment, in particular to a water-containing coal powder dry conveying device. BACKGROUND

[0002] The three-waste furnace generally refers to a special industrial boiler capable of treating the "three wastes" (waste gas, waste water and waste residue) in industrial production; the combustion raw material of the three-waste furnace is mostly coal powder, but the coal powder purchased at present is mostly in a wet state, and in order to improve the combustion efficiency of the coal powder, the coal powder needs to be first subjected to drying and dehydration treatment; the existing drying and dehydration treatment equipment has the following deficiencies:

[0003] 1. When the water-containing coal powder is added into the drying cavity, a direct drying mode is mostly used, and in this mode, the energy consumption of the drying equipment is relatively large when the water content of the coal powder is large;

[0004] 2. In the drying process, the water-containing coal powder is not evenly dispersed in the drying cavity, and is mostly concentrated at the discharge port, resulting in low drying efficiency. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a water-containing coal powder dry conveying device, which solves the problems mentioned in the background art.

[0006] To achieve the above object, the present application is implemented by the following technical scheme:

[0007] A water-containing coal powder dry conveying device, comprising a main machine box, the inside of which is provided with, from top to bottom, a heat exchange cavity, an exhaust cavity, a feeding cavity, a first-stage drying cavity and a second-stage drying cavity;

[0008] A hot gas extraction fan is installed in the inside of the exhaust cavity, and is used to extract the hot gas in the first-stage drying cavity to the heat exchange cavity;

[0009] A heat exchanger is installed in the inside of the heat exchange cavity;

[0010] A feeding conveying belt is symmetrically arranged on both sides of the inside of the feeding cavity, a feeding hole is formed in the middle of the top surface of the first-stage drying cavity, and the output end of the feeding conveying belt is located at the top of the feeding hole;

[0011] A water pressing assembly comprises a rectangular frame, side pressing plates, a middle pressing plate and a crushing component, the rectangular frame is horizontally arranged, moving grooves are formed in the front and back sides of the rectangular frame, the rectangular frame is vertically and slidingly installed in the inside of the first-stage drying cavity, a space is left between the two ends of the rectangular frame and the first-stage drying cavity, the side pressing plates are symmetrically and slidingly installed in the inside of the rectangular frame, the middle pressing plate is rotatably installed in the middle of the rectangular frame, the middle pressing plate is located below the feeding hole, the crushing component is installed on the top surface of the middle pressing plate, and water suction holes are formed in the bottom surfaces of the middle pressing plate and the side pressing plates;

[0012] The first electric heating plate is arranged at the inner bottom of the first-stage drying cavity, a discharging hole is arranged at the center of the first electric heating plate, and a plugging assembly is arranged in the discharging hole.

[0013] The scraping assembly is vertically arranged and symmetrically and slidingly arranged on the surface of the first electric heating plate, and the working mode of the scraping assembly includes a dispersing mode and a gathering mode.

[0014] The screw conveyor is arranged in the second-stage drying cavity and used for outputting dried coal powder, and the second electric heating plate is arranged on the inner bottom surface of the second-stage drying cavity.

[0015] The screening output box is provided with a feeding hole and an air inlet hole, the feeding hole is communicated with the output end of the screw conveyor, and the air inlet hole is communicated with the heat exchanger.

[0016] The dry conveying device includes the following working states.

[0017] In the first state, the middle pressing plate is adjusted to be in a vertical state through rotation, a discharging gap is left between the crushing part of the middle pressing plate and the group of side pressing plates, the water-containing coal powder input through the feeding hole is discharged onto the first electric heating plate through the discharging gap, and the rotation of the crushing part can accelerate the discharging speed of the coal powder particles.

[0018] In the second state, the middle pressing plate is adjusted to be in a horizontal state through rotation and the crushing part faces upward, the rectangular frame is lowered, the middle pressing plate and the side pressing plates synchronously press the coal powder on the first electric heating plate, and the water suction hole absorbs the pressed water.

[0019] In the third state, the scraping assembly is adjusted to be in the dispersing mode, the scraping assembly disperses and evenly spreads the coal powder on the first electric heating plate and separates the large-size coal particles to the middle part of the first electric heating plate, and the first electric heating plate dries the coal powder.

[0020] In the fourth state, the middle pressing plate is in a horizontal state and the crushing part faces downward, the rectangular frame is lowered, and the crushing part crushes the large-size coal particles in the middle part of the first electric heating plate.

[0021] Further, a spacing is left between the outer end of the side pressing plate and the rectangular frame, the side wall of the side pressing plate is provided with a first moving block, the first moving block is slidingly embedded in the two ends of the moving groove, the outer wall of the first moving block is connected with the water suction pump through the conduit, the water suction pump is communicated with the water suction hole in the bottom surface of the side pressing plate, and the water suction pump is arranged on the side surface of the rectangular frame; the top surface of the side pressing plate at one end is provided with a guide plate.

[0022] Further, the side wall of the middle pressing plate is rotationally connected with a second moving block, the second moving block is slidingly embedded in the middle part of the moving groove, and the outer part of the second moving block is provided with a first motor for driving the self-rotation of the middle pressing plate.

[0023] Further, the crushing component comprises a first plate body, a second plate body and upper crushing discs, the first plate body and the second plate body have the same area as the middle plate, the second plate body is arranged on the outer wall of the first plate body, the inside of the first plate body is provided with a second motor, the two sides of the first plate body are connected with second moving blocks, the inside of the second plate body is rotatably embedded with a plurality of upper crushing discs, the output gear of the second motor is connected with the upper crushing discs, and the second motor is used to drive the plurality of upper crushing discs to rotate.

[0024] Further, the scraping assembly comprises a fixed plate, the side bottom end of the fixed plate is slidably connected with the main cabinet, a rectangular accommodating hole is formed in the inside of the fixed plate, a positioning strip is rotatably installed on the inside top of the accommodating hole and a driven gear is rotatably connected at the rotating connection position, the outer side of the driven gear is meshingly connected with a rack, the top end of the rack is connected with a first driving rod, the first driving rod is fixedly arranged on the top side wall of the fixed plate, a sealing plate and a dispersing plate are vertically arranged on the outer wall of the positioning strip, the sealing plate and the dispersing plate are arranged at right angles, and a rubber scraping strip is arranged on the bottom end of the sealing plate; in the dispersing mode, the dispersing plate is arranged in the accommodating hole; and in the material gathering mode, the sealing plate is arranged in the accommodating hole.

[0025] Further, the dispersing plate comprises an inner strip plate, an outer strip plate, a second driving rod, a connecting plate and dispersing rods, the inner strip plate is fixedly connected with the positioning strip, the outer side of the inner strip plate is horizontally slidably installed with the outer strip plate, a plurality of dispersing rods are arranged on the outer wall of the outer strip plate, the top surface of the outer strip plate is provided with a connecting plate at one end, the surface of the inner strip plate is provided with a second driving rod, the output end of the second driving rod is connected with the connecting plate, and the second driving rod is used to drive the outer strip plate to move so as to change the dispersing positions of the dispersing rods.

[0026] Further, the rectangular frame is provided with a beating component at both ends, the beating component comprises a swing rod and a beating rod, one end of the swing rod is rotatably connected with the rectangular frame and is provided with a third motor at the rotating connection position, the other end of the swing rod is fixedly connected with the beating rod, the beating rod is arranged on the end surface of the rectangular frame, and the third motor is used to drive the swing rod to rotate so as to make the beating rod beat the fixed plate to remove the coal ash on the outer wall of the scraping assembly.

[0027] Further, the sealing assembly comprises a sealing plate, a bottom plate and a lower box body, the surface of the bottom plate is provided with the sealing plate, the sealing plate is embedded in the discharging hole in a matched mode, the bottom surface of the bottom plate is provided with the lower box body, the inside of the lower box body is provided with a fourth motor, the inside of the sealing plate is rotatably embedded with a lower crushing disc, the output gear of the fourth motor is connected with the lower crushing disc, and one end of the bottom plate is rotatably connected with the secondary drying cavity; the bottom plate is turned down to open the discharging hole; and in the fourth state, the lower crushing disc is matched with the upper crushing disc to crush large-size coal particles.

[0028] Further, the screening output box comprises a main box body, a discharging inclined plate, an agitating impeller, a vertical screen plate and a horizontal screen plate, the top surface of the main box body is provided with an air extractor, the inlet end of the air extractor is communicated with a heat exchanger, the discharging inclined plate is arranged at the top of the main box body, the output end of the screw conveyor is communicated to the top feeding end of the discharging inclined plate, the bottom end of the discharging inclined plate is provided with the agitating impeller, the bottom of the agitating impeller is provided with the vertical screen plate, the bottom of the vertical screen plate is provided with the horizontal screen plate, and the bottom end of the main box body is provided with a discharging conveyor belt; the air outlet of the air extractor is arranged at the top of the discharging inclined plate, and the air extractor discharges hot air to the top of the discharging inclined plate to dry the coal ash in three stages; and the agitating impeller is used for batch conveying of the coal ash.

[0029] Further, the bottom surface of the discharging inclined plate is provided with a crushing cone, the bottom of the agitating impeller is provided with a dust raising plate, one end of the dust raising plate is rotatably arranged in the main box body, and the other end of the dust raising plate extends to the bottom of the crushing cone of the discharging inclined plate; the dust raising plate is used for intermittently rotating upward to raise the coal ash, and the coal ash is crushed by the crushing cone.

[0030] The application provides a water-coal dry conveying device.

[0031] 1. The design of the first drying cavity, the second drying cavity and the screening output box three-stage heating and drying structure can fully dry the water in the coal powder, so that dry coal powder is output for use.

[0032] 2. The design of the scraping assembly has two modes, which has the following effects: the scraping assembly in the dispersion 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 heats the coal powder, the scraping assembly in the dispersion mode can continuously agitate the coal powder, so that the drying speed of the coal powder is faster, and the heated steam can be stirred and quickly discharged through the gaps at both ends of the rectangular frame, the feeding hole and the exhaust cavity; when the scraping assembly disperses, it can also comb large-size coal particles to the middle part of the first electric heating plate for subsequent concentrated crushing; when discharging, the scraping assembly can be adjusted to the plugging mode, and the scraping assembly can push the coal powder to the discharge hole, so that the coal powder is discharged to the second drying cavity through the discharge hole.

[0033] 3、The design of the water pressing assembly has the following effects: when wet coal powder is fed, the middle pressing plate can be adjusted to be vertical, and a guide-out gap is left between the middle pressing plate and the side pressing plate, so that the coal powder entering the feeding hole can be guided out to the first electric heating plate to realize feeding; at the same time, the crushing part is arranged in the guide-out gap, which can speed up the feeding speed and avoid coal powder blockage; when water is pressed, the middle pressing plate and the side pressing plate cooperate to form a pressing surface, so that when the rectangular frame is lowered, the middle pressing plate and the side pressing plate can synchronously press the wet coal powder, so that the water in the wet coal powder is sucked out through the water suction hole, so that the pretreatment of the wet coal powder can be realized, and the working energy consumption of the first electric heating plate can be reduced; after a period of carding, the middle pressing plate can be adjusted to be downward, so that the crushing part can crush the large-size particles carded in the middle;

[0034] 4, The first-stage dried coal powder is discharged into the screw conveyor, the screw conveyor conveys the coal powder, and the second electric heating plate dries the conveyed coal powder;

[0035] 5, The screening output box can filter out large-size coal particles, so that qualified coal powder is output. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0037] Figure 1 The structure schematic diagram of the wet coal powder dry conveying equipment of the present application is shown;

[0038] Figure 2 The internal side cross-section structure schematic diagram of the main machine box of the present application is shown;

[0039] Figure 3 The cross-section structure schematic diagram of the water pressing assembly of the present application is shown;

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

[0041] Figure 5 The structure schematic diagram of the middle pressing plate and the side pressing plate leaving a guide-out gap of the present application is shown;

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

[0043] Figure 7 The connection structure schematic diagram of the dispersing plate and the sealing plate of the present application is shown;

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

[0045] Figure 9 A schematic diagram of the internal structure of the screening output box of the present application is shown;

[0046] As shown in the figure: 1, main machine box, 11, heat exchange cavity, 12, exhaust cavity, 121, hot gas extraction fan, 13, feeding cavity, 14, first-stage drying cavity, 141, feeding hole, 142, first electric heating plate, 143, discharging hole, 15, second-stage drying cavity, 151, second electric heating plate, 2, feeding conveyor belt, 3, water pressing assembly, 31, rectangular frame, 311, moving groove, 32, side pressing plate, 321, first moving block, 33, middle pressing plate, 331, second moving block, 332, first motor, 34, water suction hole, 35, water suction pump, 36, crushing part, 361, first plate body, 362, second plate body, 363, upper crushing disc, 364, second motor, 37, guide plate, 4, scraping assembly, 41, fixed plate, 411, containing hole, 42, rubber scraping strip, 43, positioning strip, 431, driven gear, 44, first driving rod, 441, rack, 45, sealing plate, 46, dispersing plate, 461, inner strip plate, 462, outer strip plate, 463, dispersing rod, 464, connecting plate, 465, second driving rod, 5, beating part, 51, swing rod, 52, beating rod, 53, third motor, 6, plugging assembly, 61, plugging plate, 62, bottom plate, 63, lower box body, 64, fourth motor, 65, lower crushing disc, 7, screw conveyor, 8, screening output box, 81, main box body, 82, exhaust fan, 83, discharging inclined plate, 831, crushing cone, 84, stirring impeller, 85, dust raising plate, 86, longitudinal screen plate, 87, transverse screen plate, 88, discharging conveyor belt, 9, heat exchanger. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0048] In order to solve the technical problems in the background art, the following dry-type coal powder conveying device with water is provided:

[0049] As shown in the figure, Figures 1-9 The dry-type coal powder conveying device with water provided by the present application comprises a main machine box 1, which is internally provided with, from top to bottom, a heat exchange cavity 11, an exhaust cavity 12, a feeding cavity 13, a first-stage drying cavity 14 and a second-stage drying cavity 15.

[0050] hot air extraction fan 121 mounted inside the exhaust cavity 12, the hot air extraction fan 121 is used to extract the hot air in the first drying cavity 14 to the heat exchange cavity 11;

[0051] 14 to the heat exchange cavity 11;

[0052] heat exchanger 9 mounted inside the heat exchange cavity 11;

[0053] loading conveyor belt 2 symmetrically arranged inside both sides of the loading cavity 13, a loading hole 141 is formed in the middle of the top surface of the first drying cavity 14, and the output end of the loading conveyor belt 2 is located at the top of the loading hole 141;

[0054] The water pressing assembly 3 includes a rectangular frame 31, a side pressing plate 32, a middle pressing plate 33, and a crushing component 36. The rectangular frame 31 is horizontally arranged, and moving grooves 311 are formed on the front and back sides of the rectangular frame 31. The rectangular frame 31 is vertically slidingly mounted inside the first drying cavity 14, and a space is left between the two ends of the rectangular frame 31 and the first drying cavity 14. The side pressing plates 32 are symmetrically slidingly mounted inside the rectangular frame 31, and the middle pressing plate 33 is rotatably mounted at the middle of the rectangular frame 31. The middle pressing plate 33 is located below the loading hole 141, and the crushing component 36 is mounted on the top surface of the middle pressing plate 33. Water suction holes 34 are formed on the bottom surfaces of the middle pressing plate 33 and the side pressing plate 32;

[0055] The first electric heating plate 142 is arranged at the bottom of the first drying cavity 14, and a discharging hole 143 is formed at the center of the first electric heating plate 142. The discharging hole 143 is internally mounted with a plugging assembly 6;

[0056] The scraping assembly 4 is vertically arranged, and the scraping assembly 4 is symmetrically slidingly mounted on the surface of the first electric heating plate 142. The working mode of the scraping assembly 4 includes a dispersing mode and a material gathering mode;

[0057] The screw conveyor 7 is mounted inside the second drying cavity 15, and the screw conveyor 7 is used to output the dried coal powder. The second electric heating plate 151 is mounted on the inner bottom surface of the second drying cavity 15;

[0058] The screening output box 8 has a loading hole and an air inlet hole. The loading hole is in communication with the output end of the screw conveyor 7, and the air inlet hole is in communication with the heat exchanger 9;

[0059] The dry conveying device includes the following working states:

[0060] In the first state, the middle pressing plate 33 is adjusted to be in a vertical state, and a discharging gap is left between the crushing component 36 of the middle pressing plate 33 and a group of side pressing plates 32. The water-coated coal powder input through the loading hole 141 is discharged onto the first electric heating plate 142 through the discharging gap, and the crushing component 36 crushes the coal powder particles in the discharging gap;

[0061] In the second state, the middle pressing plate 33 is adjusted to be horizontal and the crushing component 36 faces upward, the rectangular frame 31 is lowered, and the middle pressing plate 33 and the side pressing plate 32 press the coal powder on the first electric heating plate 142 synchronously, and the water suction hole 34 absorbs the pressed water;

[0062] In the third state, the scraping assembly 4 is adjusted to be in the dispersion mode, the scraping assembly 4 spreads the coal powder on the first electric heating plate 142 and disperses the large-size coal particles to the middle part 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 pressing plate 33 is in the horizontal state and the crushing component 36 faces downward, the rectangular frame 31 is lowered, and the crushing component 36 crushes the large-size coal particles in the middle part of the first electric heating plate 142.

[0064] In the above scheme:

[0065] 1. The first-level drying cavity 14, the second-level drying cavity 15, and the three-level heating and drying structure of the screening and output box are designed, which can fully dry the water in the coal powder to obtain dry coal powder for output and use.

[0066] 2. The scraping assembly 4 has two modes and has the following effects:

[0067] 2.1. The scraping assembly 4 in the dispersion mode can spread 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 scraping assembly 4 in the dispersion mode can continuously stir the coal powder, so that the drying speed of the coal powder is faster, the heated steam can be stirred and quickly discharged, and then discharged through the gap between the two ends of the rectangular frame 31, the feeding hole 141, and the exhaust cavity 12.

[0069] 2.3. When the scraping assembly 4 disperses, it can also comb large-size coal particles to the middle part of the first electric heating plate 142 for subsequent concentrated crushing.

[0070] 2.4. When discharging, the scraping assembly 4 can be adjusted to the blocking mode, and the scraping assembly 4 can push the coal powder to the discharge hole 143, so that the coal powder is discharged to the second drying cavity 15 through the discharge hole 143.

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

[0072] 3.1. When wet coal powder is fed, the middle pressing plate 33 can be adjusted to be vertical, and a discharge gap is left between the middle pressing plate 33 and the side pressing plate 32, so that the coal powder entering through the feeding hole 141 can be discharged to the first electric heating plate 142 through the discharge gap, realizing feeding. At the same time, the crushing component 36 is placed in the discharge gap, which can speed up the discharging speed and avoid coal powder blockage.

[0073] 3.2, the middle pressing plate 33 cooperates with the side pressing plate 32 to form a pressing surface, so that when the rectangular frame 31 is lowered, the middle pressing plate 33 and the side pressing plate 32 can synchronously extrude the wet coal powder, so that the water in the wet coal powder is absorbed by the water absorption hole 34, so that the pretreatment of the wet coal powder can be realized, and the working energy consumption of the first electric heating plate 142 can be reduced;

[0074] 3.3, after a period of combing, the middle pressing plate 33 can be adjusted to be rotated to the crushing part 36 downward, so that the crushing part 36 can crush the large-size particles combed in the middle part;

[0075] 4, the first-stage 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 conveyed coal powder;

[0076] 5, the screening output box 8 can filter out the coal particles with large size, so that the qualified coal powder is output.

[0077] In the embodiment, the outer end of the side pressing plate 32 is spaced apart from the rectangular frame 31, the side wall of the side pressing plate 32 is provided with a first moving block 321 which is slidingly embedded in the two ends of the moving groove 311, the outer wall of the first moving block 321 is connected with the water suction pump 35 through a conduit, the water suction pump 35 is communicated with the water absorption hole 34 in the bottom surface of the side pressing plate 32, and the water suction pump 35 is arranged on the side surface of the rectangular frame 31; the side wall of the middle pressing plate 33 is rotationally connected with a second moving block 331 which is slidingly embedded in the middle part of the moving groove 311, and the outer part of the second moving block 331 is provided with a first motor 332 which drives the self-rotation of the middle pressing plate 33; the top surface of the side pressing plate located at one end is provided with a guide plate 37.

[0078] In the above scheme:

[0079] 1, the water absorption hole 34 in the bottom surface of the side pressing plate 32 and the middle pressing plate 33 is communicated with the water suction pump 35, so as to absorb the extruded water;

[0080] 2, the first moving block 321 of the side pressing plate 32 can move along the moving groove 311, so as to meet the rotation adjustment needs of the middle pressing plate 33;

[0081] 3, the second moving block 331 of the middle pressing plate 33 can move along the moving groove 311, so as to meet the movement of the middle pressing plate 33 when discharging, so that the discharge gap is arranged opposite to the feeding hole 141, and the first motor 332 can drive the middle pressing plate 33 to rotate, so that the middle pressing plate 33 is switched among three modes.

[0082] In the embodiment, the crushing component 36 comprises a first plate body 361, a second plate body 362 and upper crushing discs 363, the first plate body 361 and the second plate body 362 have the same area as the area of the middle pressing plate 33, the second plate body 362 is arranged on the outer wall of the first plate body 361, the inside of the first plate body 361 is provided with a second motor 364, the two sides of the first plate body 361 are connected with the second moving block 331, a plurality of groups of the upper crushing discs 363 are rotatably embedded in the inside of the second plate body 362, the output gear of the second motor 364 is in transmission connection with the upper crushing discs 363, and the second motor 364 is used to drive the plurality of groups of the upper crushing discs 363 to rotate.

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

[0084] In the embodiment, the scraping assembly 4 comprises a fixed plate 41, the side bottom end of the fixed plate 41 is in sliding connection with the main machine box 1, a rectangular accommodating hole 411 is arranged in the inside of the fixed plate 41, a positioning strip 43 is rotatably installed on the inside top of the accommodating hole 411 and a driven gear 431 is rotatably connected at the installation position, the outer side of the driven gear 431 is in meshing connection with a rack 441, the top end of the rack 441 is connected with a first driving rod 44, the first driving rod 44 is fixedly arranged on the top side wall of the fixed plate 41, a sealing plate 45 and a dispersing plate 46 are vertically arranged on the outer wall of the positioning strip 43, the sealing plate 45 and the dispersing plate 46 are distributed at right angles, and a rubber scraping strip 42 is arranged on the bottom end of the sealing plate.

[0085] In the above scheme:

[0086] 1. When the fixed plate 41 moves, the rubber scraping strip 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 prevented from being scratched.

[0087] 2. The sealing plate 45 and the dispersing plate 46 are designed as an integrated structure L-shaped, when the material gathering mode is used, the blocking plate 61 is arranged in the accommodating hole 411, and the dispersing plate 46 is arranged on the inside of the fixed plate 41; when the dispersing mode is used, the first driving rod 44 is retracted, thereby driving the rack 441 to move upward, the rack 441 drives the driven gear 431 to rotate, so that the dispersing plate 46 is arranged in the accommodating hole 411, the blocking plate 61 is arranged on the outside of the fixed plate 41, and the dispersing plate 46 is inserted into the coal layer, so that when the fixed plate 41 moves, the dispersing plate 46 can disperse and stir the coal powder.

[0088] In the embodiment, the dispersing plate 46 comprises an inner strip plate 461, an outer strip plate 462, a second driving rod 465, a connecting plate 464 and dispersing rods 463, the inner strip plate 461 is fixedly connected to the positioning strip 43, the outer side 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 a plurality of dispersing rods 463, one end of the top surface of the outer strip plate 462 is provided with the connecting plate 464, the surface of the inner strip plate 461 is provided with the second driving rod 465, the output end of the second driving rod 465 is connected to the connecting plate 464, and the second driving rod 465 is used to drive the outer strip plate 462 to move so as to change the dispersing position of the dispersing rods 463.

[0089] In the above scheme, in order to increase the dispersing range of the dispersing plate 46, the second driving rod 465 can drive the outer strip plate 462 to move, so as to change the position of the dispersing rods 463, and thus the movement path of the dispersing rods 463 is different each time.

[0090] In the embodiment, the rectangular frame 31 is provided with the beating component 5 at both ends, the beating component 5 comprises a swing rod 51 and a beating rod 52, one end of the swing rod is rotatably connected to the rectangular frame and is provided with a third motor at the rotating connection position, the other end of the swing rod is fixedly connected to the beating rod, the beating rod 52 is located at the end surface of the rectangular frame 31, and the third motor 53 is used to drive the swing rod 51 to rotate, so as to make the beating rod 52 beat the fixed plate 41, and remove the coal ash on the outer wall of the scraping assembly.

[0091] In the above scheme, after the coal powder is pushed out, the inner wall of the fixed plate 41 is attached with more coal ash, in order to remove the coal powder, the fixed plate 41 moves to the rotating path of the beating rod 52, the third motor 53 can drive the swing rod 51 to rotate downward, and the beating 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 dispersing plate 46 falls off; when not in use, the beating rod 52 is arranged at the end of the rectangular frame 31, and the swing rod 51 is arranged at the side of the rectangular frame 31, which does not affect the descent of the rectangular frame 31.

[0092] In the embodiment, the blocking assembly 6 comprises a blocking plate 61, a bottom plate 62 and a lower box body 63, the surface of the bottom plate 62 is provided with the blocking plate 61, the blocking plate 61 is embedded in the discharging hole 143 in a matched mode, the bottom surface of the bottom plate 62 is provided with the lower box body 63, the inside of the lower box body 63 is installed with a fourth motor 64, the inside of the blocking plate 61 is rotatably embedded with a lower crushing disc, the output end gear of the fourth motor 64 is in transmission connection with the lower crushing disc 65, and one end of the bottom plate 62 is rotatably connected to the secondary drying cavity 15; the bottom plate 62 is turned downward to open the discharging hole 143; in the fourth state, the lower crushing disc cooperates with the upper crushing disc 363 to crush large-size coal particles.

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

[0094] In the embodiment, the screening output box 8 comprises a main box body 81, a discharging inclined plate 83, an agitating impeller 84, a longitudinal screen plate 86 and a transverse screen plate 87, the top surface of the main box body 81 is provided with an air extractor 82, the inlet end of the air extractor 82 is communicated with the heat exchanger 9, the discharging inclined plate 83 is arranged at the top of the main box body 81, the output end of the screw conveyor 7 is communicated with the top feeding end of the discharging inclined plate 83, the bottom end of the discharging inclined plate 83 is provided with the agitating impeller 84, the bottom of the agitating impeller 84 is provided with the longitudinal screen plate 86, the bottom of the longitudinal screen plate is provided with the transverse screen plate 87, and the bottom end of the main box body 81 is provided with a discharge conveyor belt 88; the air outlet of the air extractor 82 is arranged at the top of the discharging inclined plate 83, the air extractor 82 discharges hot air to the top of the discharging inclined plate 83 to dry the coal ash in three stages; and the agitating impeller 84 is used for batch conveying of the coal ash.

[0095] In the above scheme, the hot air extractor 121 extracts hot air to the heat exchange cavity 11, so that the heat exchanger 9 in the heat exchange cavity 11 can be heated, the air sucked by the air extractor 82 can be heat-exchanged through the heat exchanger 9, the waste heat of the coal powder steam can heat the air in the heat exchanger 9, and the heated air is downwardly discharged to the discharging inclined plate 83, so that the coal powder on the discharging inclined plate 83 can be heated.

[0096] The coal powder is discharged to the agitating impeller 84, the agitating impeller 84 can output intermittently 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-size coal particles are filtered out, and the qualified coal powder is output through the discharge conveyor belt 88.

[0097] In the embodiment, the bottom surface of the discharging inclined plate 83 is provided with a crushing cone 831, the bottom of the agitating impeller 84 is provided with a dust raising plate 85, one end of the dust raising plate 85 is rotatably arranged 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 discharging inclined plate 83; the dust raising plate 85 is used for intermittent upward rotation to raise the coal ash, and the coal ash is crushed by the crushing cone 831.

[0098] In the above scheme, in order to further crush the coal powder, the coal powder output by the agitating impeller is discharged to the dust raising plate, the dust raising plate is first rotated upwardly and then rotated downwardly to the vertical state, so that the coal powder is impacted by the crushing cone 831, the coal powder is crushed by the crushing cone 831, and the crushed coal powder can be dispersed and falls to the longitudinal screen plate.

[0099] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0100] The above examples are merely used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dry coal dust conveying apparatus with water, characterized by, The utility model relates to a coal powder drying device and method, and the device comprises: a main box, the inside of which is sequentially provided with a heat exchange cavity, an exhaust cavity, an upper feeding cavity, a first drying cavity and a second drying cavity from top to bottom; a hot gas extraction fan installed in the inside of the exhaust cavity, which is used to extract hot gas in the first drying cavity to the heat exchange cavity; a heat exchanger installed in the inside of the heat exchange cavity; an upper feeding conveyor belt symmetrically arranged on both sides of the inside of the upper feeding cavity, a feeding hole being formed in the middle of the top surface of the first drying cavity, and the output end of the upper feeding conveyor belt being located on the top of the feeding hole; a water pressing assembly comprising a rectangular frame, side pressing plates, a middle pressing plate and a crushing component, the rectangular frame being horizontally arranged, movement grooves being formed in the front and back sides of the rectangular frame, the rectangular frame being vertically and slidingly installed in the inside of the first drying cavity, a space being left between the two ends of the rectangular frame and the first drying cavity, the side pressing plates being symmetrically and slidingly installed in the inside of the rectangular frame, the middle pressing plate being rotatably installed in the middle of the rectangular frame, the middle pressing plate being located below the feeding hole, the crushing component being installed on the top surface of the middle pressing plate, and water suction holes being formed in the bottom surfaces of the middle pressing plate and the side pressing plates; a first electric heating plate arranged on the inside bottom of the first drying cavity, a discharging hole being formed in the center of the first electric heating plate, and a plugging assembly being installed in the inside of the discharging hole; a material scraping assembly vertically arranged, the material scraping assembly being symmetrically and slidingly installed on the surface of the first electric heating plate, and the working mode of the material scraping assembly comprising a dispersing mode and a material gathering mode; a screw conveyor installed in the inside of the second drying cavity, which is used to output dried coal powder, and a second electric heating plate being installed on the inside bottom of the second drying cavity; a screening output box having a feeding hole and an air inlet hole, the feeding hole being in communication with the output end of the screw conveyor, and the air inlet hole being in communication with the heat exchanger; the dry conveying device comprises the following working states: in the first state, the middle pressing plate is adjusted to be in a vertical state by rotation, a discharging gap is left between the crushing component of the middle pressing plate and the side pressing plates, the water-containing coal powder input from the feeding hole is discharged onto the first electric heating plate through the discharging gap, and the rotation of the crushing component can accelerate the discharging speed of the coal powder particles; in the second state, the middle pressing plate is adjusted to be in a horizontal state by rotation and the crushing component faces upward, the rectangular frame is lowered, the middle pressing plate and the side pressing plates simultaneously press the coal powder on the first electric heating plate, and the water suction holes adsorb the pressed water; in the third state, the material scraping assembly is adjusted to be in the dispersing mode, the material scraping assembly disperses and evenly spreads the coal powder on the first electric heating plate and separates large-size coal particles from the first electric heating plate 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 pressing plate is in the horizontal state and the crushing component faces downward, the rectangular frame is lowered, and the crushing component crushes the large-size coal particles in the middle of the first electric heating plate.

2. A coal water slurry dry conveying apparatus according to claim 1, wherein: a space is left between the outer end of the side pressing plate and the rectangular frame, the side wall of the side pressing plate is provided with a first moving block, the first moving block is slidingly embedded in the two ends of the movement groove, the outer wall of the first moving block is connected with a water suction pump through a conduit, the water suction pump is in communication with the water suction holes in the bottom surface of the side pressing plate, the water suction pump is arranged on the side of the rectangular frame, and the top surface of the side pressing plate on one end is provided with a material guiding plate.

3. A coal water slurry dry conveying apparatus according to claim 2, wherein: the side wall of the middle pressing plate is rotatably connected with a second moving block, the second moving block is slidingly embedded in the middle of the movement groove, and the outside of the second moving block is provided with a first motor for driving the self-rotation of the middle pressing plate.

4. A coal water slurry dry conveying apparatus according to claim 3, wherein: The crushing component comprises a first plate body, a second plate body and upper crushing discs, the first plate body and the second plate body have the same area as the area of the middle pressure plate, the second plate body is arranged on the outer wall of the first plate body, the inside of the first plate body is provided with a second motor, the two sides of the first plate body are connected with second moving blocks, a plurality of upper crushing discs are rotatably embedded in the inside of the second plate body, the output gear of the second motor is connected with the upper crushing discs, and the second motor is used to drive the plurality of upper crushing discs to rotate.

5. A coal water slurry dry conveying apparatus according to claim 4, wherein: The material scraping assembly comprises a fixed plate, the side bottom end of the fixed plate is slidably connected with a main machine box, a rectangular accommodating hole is formed in the inside of the fixed plate, a positioning strip is rotatably installed on the inside top of the accommodating hole, and a driven gear is rotatably connected with the positioning strip, the outer side of the driven gear is meshingly connected with a rack, the top end of the rack is connected with a first driving rod, the first driving rod is fixedly arranged on the top side wall of the fixed plate, a sealing plate and a dispersing plate are vertically arranged on the outer wall of the positioning strip, the sealing plate and the dispersing plate are arranged at right angles, and a rubber scraping strip is arranged on the bottom end of the sealing plate; in the dispersing mode, the dispersing plate is arranged in the accommodating hole; and in the material gathering mode, the sealing plate is arranged in the accommodating hole.

6. A coal water slurry dry conveying apparatus according to claim 5, wherein: The dispersing plate comprises an inner strip plate, an outer strip plate, a second driving rod, a connecting plate and dispersing rods, the inner strip plate is fixedly connected with the positioning strip, the outer side of the inner strip plate is horizontally slidably installed with the outer strip plate, a plurality of dispersing rods are arranged on the outer wall of the outer strip plate, the top surface of the outer strip plate is provided with the connecting plate, the surface of the inner strip plate is provided with the second driving rod, the output end of the second driving rod is connected with the connecting plate, and the second driving rod is used to drive the outer strip plate to move, so that the dispersing positions of the dispersing rods are changed.

7. A coal water slurry dry conveying apparatus according to claim 6, wherein: The rectangular frame is provided with a beating component at both ends, the beating component comprises a swing rod and a beating rod, one end of the swing rod is rotatably connected with the rectangular frame and provided with a third motor, the other end of the swing rod is fixedly connected with the beating rod, the beating rod is arranged on the end surface of the rectangular frame, and the third motor is used to drive the swing rod to rotate, so that the beating rod beats the fixed plate, and the coal ash on the outer wall of the material scraping assembly is removed.

8. A coal water slurry dry conveying apparatus according to claim 7, wherein: The sealing assembly comprises a sealing plate, a bottom plate and a lower box body, the surface of the bottom plate is provided with the sealing plate, the sealing plate is embedded in the material discharging hole in a matched mode, the bottom surface of the bottom plate is provided with the lower box body, the inside of the lower box body is provided with a fourth motor, the inside of the sealing plate is rotatably embedded with a lower crushing disc, the output gear of the fourth motor is connected with the lower crushing disc, and one end of the bottom plate is rotatably connected with the secondary drying cavity; the bottom plate is turned down to open the material discharging hole; in the fourth state, the lower crushing disc is matched with the upper crushing disc to crush large-size coal particles.

9. A coal water slurry dry conveying apparatus according to claim 8, characterized in that: The screening output box comprises a main box body, a discharging inclined plate, an agitating impeller, a longitudinal sieve plate and a transverse sieve plate, an air extractor is installed on the top surface of the main box body, the inlet end of the air extractor is communicated with a heat exchanger, the discharging inclined plate is arranged on the top of the main box body, the output end of the screw conveyor is communicated with the top material feeding end of the discharging inclined plate, the agitating impeller is installed on the bottom end of the discharging inclined plate, the longitudinal sieve plate is installed on the bottom of the agitating impeller, the transverse sieve plate is installed on the bottom of the longitudinal sieve plate, and a discharging conveyor belt is installed on the bottom end of the main box body; the air outlet of the air extractor is arranged on the top of the discharging inclined plate, the air extractor discharges hot air to the top of the discharging inclined plate to dry the coal ash in three stages; and the agitating impeller is used to batch convey the coal ash.

10. A coal water slurry dry conveying apparatus according to claim 9, wherein: The bottom surface of the discharging inclined plate is provided with a crushing cone, the bottom of the stirring impeller is provided with a dust raising plate, one end of the dust raising plate is rotatably arranged in the main box body, and the other end of the dust raising plate extends to the bottom of the crushing cone of the discharging inclined plate; the dust raising plate is used for intermittently rotating upward to raise coal dust, and the coal dust is crushed by the crushing cone.

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