Pneumatic spiral slag extractor capable of conveying high-viscosity coal slag

Abstract

The pneumatic spiral slag extractor capable of conveying the high-viscosity coal slag comprises a feeding extension, a discharging extension and a discharging support, and the feeding extension comprises a collecting hopper, a first pneumatic motor, a first auger and a stirring mechanism. The discharging extension comprises a transfer hopper, a second pneumatic motor and a second auger. The discharging support is detachably installed above the material conveying device. A first hose is connected between the feeding extension set and the discharging extension set, and a second hose is connected between the discharging extension set and the discharging support. According to the pneumatic spiral slag extractor, the split type series connection design is adopted, the auger can be prevented from being bent, abrasion of a hose and the running resistance of the auger are reduced, and the auger runs more smoothly. By arranging the stirring mechanism, the situation of coal cinder accumulation and blockage can be relieved, the efficiency of cleaning drilling cuttings in an underground coal mine can be improved, the problem of material blockage of the collecting hopper is solved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and in particular to a pneumatic screw conveyor for conveying highly viscous coal slag. Background Technology

[0002] Wet drilling is widely used in metal mines, tunnel engineering, and coal mines. In metal mines, it is commonly used for drilling blast holes and geological exploration holes during the mining process. In tunnel engineering, it can be used for advanced geological prediction drilling and anchor bolt drilling. In coal mining, it is mainly used for gas drainage holes, water exploration holes, and advanced drilling in tunnel excavation. Wet drilling uses a large amount of water, which increases the water content of the coal slag, causing the following changes in its physical properties: Increased weight: The addition of water directly increases the weight of the coal slag, which will affect subsequent transportation and processing, such as increasing transportation costs and placing higher demands on the load-bearing capacity of transportation equipment and processing sites.

[0003] Changes in particle size distribution: A suitable amount of water will cause fine particles in coal slag to agglomerate and form larger particles, thus changing the particle size distribution of the coal slag. However, if the water content is too high, the coal slag particles may be dispersed by soaking in water, and the originally larger particles may break into smaller particles.

[0004] Decreased fluidity: When coal slag contains water, its fluidity decreases significantly. This is because water forms a sticky medium between coal slag particles, increasing the friction and adhesion between particles, making the coal slag easier to accumulate and harder to flow, which can easily cause problems such as silo blockage and transportation difficulties.

[0005] Reduced air permeability: Moisture fills the gaps between coal ash particles, reducing air circulation channels and significantly decreasing the air permeability of the coal ash. This can negatively impact processes that require an aerobic environment, such as the natural drying of coal ash and aerobic fermentation during composting, potentially delaying these processes.

[0006] When using a pneumatic spiral slag remover to clean drilling slag and clear accumulated coal, the wet drilling method increases the viscosity of the coal slag due to its moisture content. This poses several hazards during transport. 1. This causes coal slag to arch or form rat trails in the hopper, hindering the smooth transport of coal slag and resulting in untimely material supply.

[0007] 2. Increased friction between coal slag and pipe wall / auger increases transport resistance.

[0008] 3. Increased transport weight requires a larger torque input to the auger.

[0009] 4. In order to overcome the conveying resistance, a reducer with a larger torque is required, which reduces the conveying speed.

[0010] 5. To prevent the auger from breaking, the thickness of the auger needs to be increased, which increases the weight of the equipment.

[0011] 6. The aforementioned defects limit the pipeline delivery distance and also restrict the ease of bending the hose.

[0012] Furthermore, existing slag discharge hoses typically consist of only one unit, extending from the borehole to the conveyor belt, with an auger installed inside. However, in actual construction environments, the borehole and the conveyor belt are often not on the same straight roadway, requiring the hose to bend for connection. Since the auger inside the hose also bends, its frequent friction against the hose's inner wall during rotation leads to accelerated wear, increased auger operating resistance, and reduced auger lifespan due to metal fatigue. Moreover, moving the borehole necessitates moving and reinstalling the entire slag discharge equipment, which is quite cumbersome.

[0013] Moreover, a screw conveyor is usually driven by a pneumatic motor. If the distance between the drill hole and the belt frame is long, the running resistance will increase when the pneumatic motor drives the screw conveyor, which may easily lead to poor start-up or jamming. Summary of the Invention

[0014] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a pneumatic screw conveyor for conveying highly viscous coal slag, which can improve the efficiency of cleaning drill cuttings in underground coal mines, reduce material blockage, lower the labor intensity of workers, and, moreover, adopt a split design to reduce wear on the hoses and the operating resistance of the auger.

[0015] This invention provides a pneumatic screw conveyor for conveying highly viscous coal slag, comprising: a feeding unit, a discharging unit, and a discharging support. The feeding unit includes a hopper, a first pneumatic motor, a first auger, and a stirring mechanism. The hopper has a drive port and a discharge port near its bottom. The first auger and the stirring mechanism are both located inside the hopper. The first auger is horizontally positioned at the bottom of the hopper, and the stirring mechanism is horizontally positioned above the first auger. The first pneumatic motor is installed outside the hopper. One end of the first auger is connected to the output end of the first pneumatic motor through the drive port of the hopper, and the other end of the first auger passes through the discharge port of the hopper. The output end of the first pneumatic motor is connected to the first auger and the stirring mechanism respectively through a transmission mechanism, and drives the first auger and the stirring mechanism to operate synchronously.

[0016] The material discharge unit includes a transfer hopper, a second pneumatic motor, and a second auger. The transfer hopper has a transfer port, a drive port, and a discharge port. The transfer port of the transfer hopper is connected to the discharge port of the collection hopper via a first flexible hose. The first auger extends from the discharge port of the collection hopper into the first flexible hose and extends to the transfer port. The second auger is horizontally positioned inside the transfer hopper. The second pneumatic motor is installed outside the transfer hopper. The output end of the second pneumatic motor is connected to and drives the second auger to rotate and convey materials. The output shaft of the second pneumatic motor is fixedly connected to the second auger via a U-shaped clamp.

[0017] The discharge bracket is detachably installed above the material conveying device. A discharge end fixing frame is fixedly connected to the discharge bracket. The discharge end fixing frame is connected to the discharge port of the transfer hopper through a second flexible hose. The second auger extends from the discharge port of the transfer hopper into the second flexible hose and extends to the discharge end fixing frame.

[0018] In some embodiments, the agitation mechanism includes a stirring shaft and stirring arms. Several stirring arms are provided and are fixed at equal intervals to the side wall of the stirring shaft, and each stirring arm is perpendicular to the stirring shaft.

[0019] In some embodiments, two adjacent stirring arms are arranged at a 90° angle.

[0020] In some embodiments, the stirring arm has an L-shaped structure, including a horizontal bar and a vertical bar connected to each other, the horizontal bar and the vertical bar being perpendicular to each other, and the vertical bar being fixedly connected between the horizontal bar and the stirring shaft.

[0021] In some embodiments, the collecting hopper is detachably connected to a first transport vehicle, and the transfer hopper is detachably connected to a second transport vehicle.

[0022] In some embodiments, the transmission mechanism includes a belt, a drive pulley, a driven pulley, and a protective cover. The drive pulley is connected to the output shaft of a first pneumatic motor, and the driven pulley is connected to a first auger via a transmission shaft. The first auger and the transmission shaft are fixedly connected by a U-shaped clip. The drive pulley and the driven pulley are connected and driven by a belt. The protective cover is detachably connected to the outside of the hopper, and the belt, drive pulley, and driven pulley are all located inside the protective cover.

[0023] In some embodiments, a top cover is detachably connected to the top of the transfer hopper, the transfer port is located on the top cover, a dust cover is fixedly connected above the transfer port, a first auger fixing frame is detachably connected inside the dust cover, the output end of the first auger is fixedly connected inside the first auger fixing frame by a U-shaped clip, a first flexible hose is fixedly connected to the outside of the first auger fixing frame, the first auger fixing frame is a frame structure, and the internal space of the first auger fixing frame is connected to the transfer hopper.

[0024] In some embodiments, the dust cover has a rectangular parallelepiped structure and an insertion interface on the side. The first auger fixing frame is inserted into the dust cover through the insertion interface, and a locking element is connected to the insertion interface to lock and position the first auger fixing frame.

[0025] In some embodiments, the hopper includes a front panel, a rear panel, a bottom plate, and two side panels. The two side panels are fixedly connected between the front panel and the rear panel. The front panel and the rear panel are parallel to each other and perpendicular to the bottom plate. The front panel and the rear panel are both isosceles trapezoids that are wider at the top and narrower at the bottom. The drive port of the hopper is located on the front panel, and the discharge port of the hopper is located on the rear panel. The side panels are rectangular and have an angle of 20 to 30 degrees with the vertical plane.

[0026] In some embodiments, the discharge end fixing frame is detachably connected to the interior of the second auger fixing frame, the output end of the second auger is connected to the interior of the second auger fixing frame via a rotating shaft, the output end of the second auger is fixedly connected to the rotating shaft via a U-shaped clip, the second hose is fixedly connected to the exterior of the second auger fixing frame, the second auger fixing frame is a frame structure, and the bottom of the discharge end fixing frame has a discharge port. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings. in: Figure 1 This is a schematic diagram of the structure of a pneumatic screw conveyor for conveying highly viscous coal slag in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the feeding unit in the middle; Figure 3 for Figure 2 A top-down view of the structure; Figure 4 for Figure 2 A schematic diagram of the transmission mechanism inside the protective cover; Figure 5 This is a schematic diagram showing the connection relationship between the first hose, the first auger fixing frame, and the first auger. Figure 6 for Figure 1 A schematic diagram of the structure of the discharge unit and discharge support in the middle; Figure 7 for Figure 6 A schematic diagram of the material discharge unit in the middle; Figure 8 for Figure 7 A structural diagram viewed from the front; Figure 9 for Figure 8 The exploded image of the reprint bucket in the middle; Figure 10 for Figure 8 A schematic diagram of the internal structure of the transfer hopper in the middle; Figure 11 A schematic diagram showing the connection relationship between the U-shaped clamp, the second auger, and the output shaft; Figure label: 1. First pneumatic motor; 2. First transport vehicle; 3. Collection hopper; 4. First flexible hose; 5. High-pressure hose; 6. Transfer hopper; 7. Second transport vehicle; 8. Second pneumatic motor; 9. Discharge bracket; 10. Second flexible hose; 11. Belt bracket; 12. Compressed air pipe intake; 13. Protective cover; 14. Mixing arm; 15. Mixing shaft; 16. L-shaped buckle; 17. First auger; 18. Drive pulley; 19. Belt; 20. Driven pulley; 21. First auger fixing frame; 22. Dust cover; 23. Discharge end fixing frame; 24. Top cover; 25. Locking device; 26. Second auger; 27. U-shaped clip; 28. Output shaft; 29. ​​Slot; 201. First wheel; 202. First flatbed frame; 203. First outrigger; 204. First handle; 701. Second wheel; 702. Second flatbed frame; 703. Second outrigger; 704. Second handle. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following description, with reference to the accompanying drawings, describes an embodiment of the pneumatic screw conveyor for conveying highly viscous coal slag.

[0030] like Figure 1-11 As shown in the figure, this embodiment of the invention proposes a pneumatic screw conveyor for conveying high-viscosity coal slag, including: a feeding machine, a discharging machine, and a discharging support 9. The feeding machine includes a hopper 3, a first pneumatic motor 1, a first auger 17, and a stirring mechanism. The hopper 3 has a drive port and a discharge port near the bottom. The first auger 17 and the stirring mechanism are both located inside the hopper 3. The first auger 17 is horizontally located at the bottom of the hopper 3, and the stirring mechanism is horizontally located above the first auger 17. The first pneumatic motor 1 is installed outside the hopper 3. One end of the first auger 17 is connected to the output end of the first pneumatic motor 1 through the drive port of the hopper 3, and the other end of the first auger 17 passes through the discharge port of the hopper 3. The output end of the first pneumatic motor 1 is connected to the first auger 17 and the stirring mechanism respectively through a transmission mechanism, and drives the first auger 17 and the stirring mechanism to operate synchronously.

[0031] The material discharge unit includes a transfer hopper 6, a second pneumatic motor 8, and a second auger 26. The transfer hopper 6 has a transfer port, a drive port, and a discharge port. The transfer port of the transfer hopper 6 is connected to the discharge port of the collection hopper 3 through a first flexible hose 4. The first auger 17 extends from the discharge port of the collection hopper 3 into the first flexible hose 4 and extends to the transfer port. The second auger 26 is arranged horizontally inside the transfer hopper 6. The second pneumatic motor 8 is installed on the outside of the transfer hopper 6. The output end of the second pneumatic motor 8 is connected to and drives the second auger 26 to rotate and convey materials. The output shaft 28 of the second pneumatic motor 8 is fixedly connected to the second auger 26 through a U-shaped clamp 27.

[0032] The discharge bracket 9 is detachably installed above the material conveying device. A discharge end fixing frame 23 is fixedly connected to the discharge bracket 9. The discharge end fixing frame 23 is connected to the discharge port of the transfer bucket 6 through a second flexible hose 10. The second auger 26 extends from the discharge port of the transfer bucket 6 into the second flexible hose 10 and extends to the discharge end fixing frame 23.

[0033] The method of use includes the following steps: (1) Place the feeding machine close to the roadway wall, align the center of the collecting hopper 3 with the drill hole, fix the waste ventilation duct cloth or woven bag on all four sides of the collecting hopper 3 and fix it to the roadway wall to catch more coal slag. (2) Arrange the discharging machine at a distance, connect the tail end of the first hose 4 to the transfer hopper 6 and lock it, try to keep the first hose 4 straight, which can reduce the conveying resistance and pipeline wear. (3) Install the discharging bracket 9 above the material conveying device and lock it. (4) Connect the second hose 10 to the discharging end fixing bracket 23 and lock it. (5) Connect the compressed air pipeline air intake 12 to the first pneumatic motor 1 and the second pneumatic motor 8 respectively through the high pressure hose 5. (6) Check whether there are foreign objects in the collecting hopper 3, start the discharging machine first, and then start the feeding machine.

[0034] This invention, through the separate series design of the feeding and discharging units, avoids auger bending, reduces hose wear and auger operating resistance, resulting in smoother auger operation and extended auger lifespan. Furthermore, as the borehole moves, only the feeding unit needs to be moved, eliminating the need to relocate the entire slag discharge equipment. Moreover, using two pneumatic motors to drive the augers of the feeding and discharging units respectively allows for the use of smaller pneumatic motors or reducers, reducing the size and weight of the equipment.

[0035] The present invention provides a material discharge bracket 9, which makes it easier to discharge materials of any size. The material discharge bracket 9 can be installed in various positions of the material conveying device and is easy to move and disassemble.

[0036] In this embodiment of the invention, by setting up a stirring mechanism, the first pneumatic motor 1 drives the first auger 17 to rotate, while simultaneously driving the stirring mechanism to stir the coal slag in the collection hopper 3. This can alleviate the situation of coal slag accumulation and blockage, break up the arch and rat hole structures formed by the coal slag in the collection hopper 3, improve the efficiency of cleaning drill cuttings in underground coal mines, reduce the problem of material blockage in the collection hopper 3, reduce the frequency of manual cleaning of the blockage in the collection hopper 3, and reduce the labor intensity of workers.

[0037] Furthermore, a short section of pipe extends outward from the discharge port of the collecting hopper 3. The first flexible hose 4 is fitted onto the pipe outside the discharge port of the collecting hopper 3 and secured with a clamp. Similarly, the second flexible hose 10 is fitted onto the pipe extending outward from the discharge port of the transfer hopper 6 and secured with a clamp.

[0038] Furthermore, a bearing housing is connected to the connection between the output shaft 28 of the second pneumatic motor 8 and the transfer bucket 6, and a bearing is installed inside the bearing housing.

[0039] Furthermore, the material conveying device is a belt conveyor, and the discharge bracket 9 is installed on the belt frame 11 on both sides of the belt conveyor. The discharge bracket 9 is fixedly connected to the belt frame 11 by bolts.

[0040] Furthermore, such as Figure 11 As shown, when using a U-shaped clip 27 to fix the output shaft 28 of the second pneumatic motor 8 and the second auger 26, the end of the second auger 26 is wrapped around the outside of the output shaft 28. A slot 29 is provided on the edge of the spiral blade of the second auger 26. Then, the U-shaped clip 27 is passed through the output shaft 28 and tightened with a nut. The arc-shaped part of the U-shaped clip 27 is engaged with the slot 29, thus securing the end of the second auger 26 to the outside of the output shaft 28.

[0041] It should be noted that in the existing technology, the end of the auger is fixedly connected to the output shaft 28 by welding. However, every time the auger rotates, the welded position bends, and over time, the frequent bending can cause the weld to break. Using U-shaped clips 27 for fixing solves this problem. The connection method between the auger and the output shaft, drive shaft, or rotating shaft in other positions also uses U-shaped clips 27.

[0042] In some embodiments, such as Figure 2 As shown, the stirring mechanism includes a stirring shaft 15 and stirring arms 14. Several stirring arms 14 are provided and are fixed at equal intervals to the side wall of the stirring shaft 15. Each stirring arm 14 is perpendicular to the stirring shaft 15.

[0043] In some embodiments, such as Figure 2 , 3 As shown, the two adjacent stirring arms 14 are arranged at a 90° angle.

[0044] In some embodiments, such as Figure 2 , 3 As shown, the stirring arm 14 has an L-shaped structure, including a horizontal bar and a vertical bar connected to each other. The horizontal bar and the vertical bar are perpendicular to each other, and the vertical bar is fixedly connected between the horizontal bar and the stirring shaft 15.

[0045] In some embodiments, such as Figure 2 , 7 As shown, the collecting hopper 3 is detachably connected to the first transport vehicle 2, and the transfer hopper 6 is detachably connected to the second transport vehicle 7.

[0046] By setting up a transport vehicle, it is easier to transport and move the collection hopper 3 and transfer hopper 6 underground, reducing the physical exertion of workers when moving equipment.

[0047] Furthermore, the first transport vehicle 2 includes a first flatbed frame 202, first wheels 201, first outriggers 203, and a first handle 204. Two first wheels 201 are provided and respectively connected to the two front ends of the first flatbed frame 202. Two first outriggers 203 are provided and respectively connected to the bottom of the two rear ends of the first flatbed frame 202. The first handle 204 is fixedly connected to the upper end of the first flatbed frame 202. In use, personnel hold the first handle 204 at the rear end of the first flatbed frame 202 and push the first flatbed frame 202 forward.

[0048] The first flatbed frame 202 has a first mounting opening. The hopper 3 is inserted into the first mounting opening from top to bottom, with the lower part of the hopper 3 extending below the first flatbed frame 202. Two L-shaped clips 16 are welded to the two side panels of the hopper 3, and the L-shaped clips 16 are detachably and fixedly connected to the edge of the first mounting opening of the first flatbed frame 202 by bolts, so that the hopper 3 is stably fixed to the first flatbed frame 202. The first pneumatic motor 1 is located on the same side as the first wheel 201, and the first pneumatic motor 1 is fixedly connected to the first flatbed frame 202 by a mounting plate.

[0049] Furthermore, the second transport vehicle 7 includes a second flatbed frame 702, second wheels 701, second outriggers 703, and a second handle 704. Two second wheels 701 are provided and respectively connected to the two front ends of the second flatbed frame 702. Two second outriggers 703 are provided and respectively connected to the bottom of the two rear ends of the second flatbed frame 702. The second handle 704 is fixedly connected to the upper end of the second flatbed frame 702. In use, personnel hold the second handle 704 at the rear end of the second flatbed frame 702 and push the second flatbed frame 702 forward.

[0050] The second flatbed frame 702 has a second mounting port. The transfer bucket 6 is inserted into the second mounting port from top to bottom. The lower part of the transfer bucket 6 extends out from below the second flatbed frame 702. The second pneumatic motor 8 is located on the same side as the second wheel 701. The second pneumatic motor 8 is fixedly connected to the second flatbed frame 702 by bolts.

[0051] In some embodiments, such as Figure 4 As shown, the transmission mechanism includes a belt 19, a driving pulley 18, a driven pulley 20, and a protective cover 13. The driving pulley 18 is connected to the output shaft of the first pneumatic motor 1. The driven pulley 20 is connected to the first auger 17 via a drive shaft. The first auger 17 and the drive shaft are fixedly connected by a U-shaped clip 27. The driving pulley 18 and the driven pulley 20 are connected and driven by the belt 19. The protective cover 13 is detachably connected to the outside of the collecting hopper 3. The belt 19, the driving pulley 18, and the driven pulley 20 are all located inside the protective cover 13. By setting up the protective cover 13, protection and dust prevention can be achieved.

[0052] Furthermore, bearing seats are connected to the connection between the output shaft of the first pneumatic motor 1 and the hopper 3, and to the connection between the mixing shaft 15 and the hopper 3, respectively. Bearings are installed inside the bearing seats, which are located inside the protective cover 13.

[0053] Furthermore, such as Figure 2 As shown, the protective cover 13 is fixedly connected to the outside of the hopper 3 by bolts. The protective cover 13 is inserted downward from the first mounting port of the first flatbed frame 202 together with the hopper 3, and the protective cover 13 is fixedly connected to the first flatbed frame 202 by bolts and L-shaped buckles 16.

[0054] In some embodiments, such as Figure 7 As shown, a top cover 24 is detachably connected to the top of the transfer bucket 6. The transfer port is located on the top cover 24. A dust cover 22 is fixedly connected above the transfer port. The interior of the dust cover 22 is detachably connected to the first auger fixing frame 21. The output end of the first auger 17 is fixedly connected to the first auger fixing frame 21 through a U-shaped clip 27. The first flexible hose 4 is fixedly connected to the exterior of the first auger fixing frame 21. The first auger fixing frame 21 is a frame structure, and the internal space of the first auger fixing frame 21 is connected to the transfer bucket 6.

[0055] In some embodiments, such as Figure 7 As shown, the dust cover 22 has a rectangular parallelepiped structure. The side of the dust cover 22 has an insertion interface. The first auger fixing frame 21 is inserted into the dust cover 22 through the insertion interface. A locking piece 25 is connected to the insertion interface to lock and position the first auger fixing frame 21. This facilitates the assembly and disassembly of the first auger 17 and the transfer bucket 6.

[0056] Furthermore, the locking component 25 is a limiting block, which is detachably and fixedly connected to the front and rear ends of the dust cover 22 by bolts or buckles, and the limiting block is set at an angle.

[0057] In some embodiments, such as Figure 4 As shown, the hopper 3 includes a front panel, a rear panel, a bottom plate, and two side panels. The two side panels are fixedly connected between the front panel and the rear panel. The front panel and the rear panel are parallel to each other and perpendicular to the bottom plate. The front panel and the rear panel are both isosceles trapezoids that are wider at the top and narrower at the bottom. The drive port of the hopper 3 is located on the front panel, and the discharge port of the hopper 3 is located on the rear panel. The side panels are rectangular and have an angle of 20 to 30 degrees with the vertical plane, which is more conducive to the falling of materials.

[0058] Furthermore, the two side panels are symmetrically arranged, and the angles between the two side panels and the vertical plane are the same.

[0059] In some embodiments, such as Figure 6 , 11 As shown, the discharge end fixing frame 23 is detachably connected to the second auger fixing frame. The output end of the second auger 26 is connected to the second auger fixing frame via a rotating shaft. The output end of the second auger 26 and the rotating shaft are fixedly connected by a U-shaped clip 27. The second flexible hose 10 is fixedly connected to the outside of the second auger fixing frame. The second auger fixing frame is a frame structure, and the bottom of the discharge end fixing frame 23 has a discharge port. This facilitates the assembly and disassembly of the second auger 26 and the discharge bracket 9.

[0060] Furthermore, both the discharge end fixing frame 23 and the second auger fixing frame are cuboid structures. The second auger fixing frame is inserted into the discharge end fixing frame 23 by a plug-in connection, and after insertion, the second auger fixing frame is locked and positioned by the locking member 25. The structure of the second auger fixing frame is the same as that of the first auger fixing frame 21.

[0061] Furthermore, the locking element 25 is a limiting block, which is detachably and fixedly connected to the front and rear ends of the discharge end fixing frame 23 by bolts or buckles, and the limiting block is inclined. The limiting block of the discharge end fixing frame 23 has the same structure as the limiting block of the dust cover 22.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pneumatic screw conveyor for conveying highly viscous coal slag, characterized in that, include: The feeding unit includes a hopper, a first pneumatic motor, a first auger, and a stirring mechanism. The hopper has a drive port and a discharge port near its bottom. The first auger and the stirring mechanism are both located inside the hopper. The first auger is horizontally positioned at the bottom of the hopper, and the stirring mechanism is horizontally positioned above the first auger. The first pneumatic motor is mounted outside the hopper. One end of the first auger is connected to the output end of the first pneumatic motor through the drive port of the hopper, and the other end of the first auger passes through the discharge port of the hopper. The output end of the first pneumatic motor is connected to the first auger and the stirring mechanism respectively through a transmission mechanism, and drives the first auger and the stirring mechanism to operate synchronously. The material discharge separator includes a transfer hopper, a second pneumatic motor, and a second auger. The transfer hopper has a transfer port, a drive port, and a discharge port. The transfer port of the transfer hopper is connected to the discharge port of the collection hopper via a first flexible hose. The first auger extends from the discharge port of the collection hopper into the first flexible hose and extends to the transfer port. The second auger is horizontally positioned inside the transfer hopper. The second pneumatic motor is installed outside the transfer hopper. The output end of the second pneumatic motor is connected to and drives the second auger to rotate and convey materials. The output shaft of the second pneumatic motor is fixedly connected to the second auger via a U-shaped clamp. A discharge bracket is detachably installed above the material conveying device. A discharge end fixing frame is fixedly connected to the discharge bracket. The discharge end fixing frame is connected to the discharge port of the transfer hopper through a second flexible hose. The second auger extends from the discharge port of the transfer hopper into the second flexible hose and extends to the discharge end fixing frame.

2. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, The stirring mechanism includes a stirring shaft and stirring arms. Several stirring arms are provided and are fixed at equal intervals to the side wall of the stirring shaft. Each stirring arm is perpendicular to the stirring shaft.

3. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 2, characterized in that, The two adjacent stirring arms are arranged at a 90° angle.

4. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 3, characterized in that, The stirring arm has an L-shaped structure and includes a horizontal bar and a vertical bar connected to each other. The horizontal bar and the vertical bar are perpendicular to each other, and the vertical bar is fixedly connected between the horizontal bar and the stirring shaft.

5. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, The collecting hopper is detachably connected to a first transport vehicle, and the transfer hopper is detachably connected to a second transport vehicle.

6. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, The transmission mechanism includes a belt, a drive pulley, a driven pulley, and a protective cover. The drive pulley is connected to the output shaft of the first pneumatic motor. The driven pulley is connected to the first auger via a transmission shaft. The first auger and the transmission shaft are fixedly connected by a U-shaped clip. The drive pulley and the driven pulley are connected and driven by a belt. The protective cover is detachably connected to the outside of the hopper. The belt, the drive pulley, and the driven pulley are all located inside the protective cover.

7. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, A top cover is detachably connected to the top of the transfer hopper. The transfer port is located on the top cover. A dust cover is fixedly connected above the transfer port. A first auger fixing frame is detachably connected inside the dust cover. The output end of the first auger is fixedly connected inside the first auger fixing frame by a U-shaped clip. The first flexible hose is fixedly connected to the outside of the first auger fixing frame. The first auger fixing frame is a frame structure. The internal space of the first auger fixing frame is connected to the transfer hopper.

8. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 7, characterized in that, The dust cover has a rectangular parallelepiped shape and an insertion interface on its side. The first auger fixing frame is inserted into the dust cover through the insertion interface. A locking device is connected to the insertion interface to lock and position the first auger fixing frame.

9. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, The hopper includes a front panel, a rear panel, a bottom plate, and two side panels. The two side panels are fixedly connected between the front panel and the rear panel. The front panel and the rear panel are parallel to each other and perpendicular to the bottom plate. The front panel and the rear panel are both isosceles trapezoids that are wider at the top and narrower at the bottom. The drive port of the hopper is located on the front panel, and the discharge port of the hopper is located on the rear panel. The side panels are rectangular and have an angle of 20 to 30 degrees with the vertical plane.

10. The pneumatic screw conveyor for conveying high-viscosity coal slag according to claim 1, characterized in that, The discharge end fixing frame is detachably connected to the second auger fixing frame. The output end of the second auger is connected to the second auger fixing frame through a rotating shaft. The output end of the second auger and the rotating shaft are fixedly connected by a U-shaped clip. The second hose is fixedly connected to the outside of the second auger fixing frame. The second auger fixing frame is a frame structure. The bottom of the discharge end fixing frame has a discharge port.

Images