A rod mill for coal slurry thickening

Abstract

The utility model discloses a kind of rod mills for coal slurry concentration, it is related to rod mill technical field.The utility model includes box, further include filter assembly, the filter assembly is installed in box cavity inside, flow guide component, the flow guide component is installed on box, and, grinding assembly, the grinding assembly is set above filter assembly, the filter assembly includes the filter plate connected with box by pin shaft, the filter plate is set in box cavity inside.The utility model is by setting filter assembly, specifically is starting motor one drive impact block rotation, its collision connecting rod makes it move up, simultaneously drive connecting sliding block along slide rail sliding and compress spring power storage, through limiting sliding slot transmission, filter plate is turned over upwards around pin shaft, after impact stops, spring rebound pushes reset, stop lever limits landing point, so on cycle makes filter plate sustained vibration, strengthen filtration efficiency, quickly separate coal slurry impurities, remove free water, improve permeability anti-blocking, guarantee subsequent concentration process.

Description

Technical Field

[0001] This utility model belongs to the field of rod mill technology, and in particular relates to a rod mill for coal slurry thickening. Background Technology

[0002] In the field of coal deep processing and utilization, coal slurry concentration is a key link between raw coal processing and subsequent refining processes. Its core objective is to remove excess free water and separate large impurities from the coal slurry to provide raw materials that meet the concentration requirements for subsequent drying, molding, or gasification processes, which directly affects production efficiency and product quality. Currently, the industry often uses rod mills as the core equipment for coal slurry concentration, which utilize the grinding and screening action of grinding media to achieve solid-liquid separation and concentration adjustment. However, the built-in filtration structure of existing rod mills generally suffers from technical pain points such as low filtration efficiency and easy clogging. Traditional filter plates are mostly fixed or have a single reciprocating motion mode. When processing coal slurry with high viscosity and high impurity content, particulate impurities tend to accumulate quickly on the surface of the filter plate, causing the filter holes to become clogged. This not only requires frequent shutdowns for cleaning, which seriously affects the continuity of production, but also leads to insufficient removal of free water due to the reduced permeability of the filter plate, making it difficult to achieve the required coal slurry concentration. In addition, although some improved filter plates have added simple vibration mechanisms, they mostly rely on a single elastic element for drive. The vibration frequency and amplitude are difficult to control precisely, and they cannot form an effective force for impurity stripping and water phase separation. They are not capable of quickly separating large impurities, and the elastic element is prone to fatigue failure after long-term use, further reducing the reliability of the equipment. Therefore, a rod mill for coal slurry concentration is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a rod mill for coal slurry thickening. By setting up a filter assembly, specifically, a starting motor drives the impact block to rotate, which in turn collides with the connecting rod, causing it to move upward. Simultaneously, this drives the connecting slider to slide along the slide rail and compress the spring to store energy. Through the transmission of the limiting slide groove, the filter plate rotates upward around the pin axis. When the impact stops, the spring rebounds and pushes it back to its original position. The stop rod limits the landing point. This cycle keeps the filter plate vibrating continuously, enhancing the filtration efficiency. This invention solves the problem that traditional filter plates are mostly fixed or have a single reciprocating motion mode. When processing high-viscosity, high-impurity coal slurry, particulate impurities easily accumulate on the surface of the filter plate, causing filter pore blockage. This not only requires frequent shutdowns for cleaning, seriously affecting production continuity, but also leads to insufficient removal of free water due to reduced filter plate permeability, making it difficult to achieve the required coal slurry concentration.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a rod mill for coal slurry thickening, comprising a housing, a filter assembly installed inside the housing cavity, a flow guiding assembly installed on the housing, and a grinding assembly positioned above the filter assembly. The filter assembly includes a filter plate connected to the housing via a pin, the filter plate being disposed inside the housing cavity. Two protective covers are fixedly connected to the right side of the housing. A motor is fixedly connected to the right side of the bottom protective cover. An impact block is disposed inside the cavity of the protective cover, and a connecting rod contacts the outer surface of the impact block. The connecting rod penetrates the housing and extends into the cavity. A limiting groove is formed on the side of the connecting rod away from the impact block. The right side of the top of the filter plate is connected to the limiting groove via a pin. A range extender and reset component is disposed above the connecting rod. The motor provides kinetic energy output for the movement of the filter plate.

[0005] Furthermore, the top of the box is equipped with a feed inlet and a water inlet, and the bottom of the box is equipped with a slurry discharge pipe. An electrically controlled valve is installed inside the slurry discharge pipe, which passes through the box and extends into the cavity.

[0006] Furthermore, the flow guiding assembly includes a flow guiding hood one located above the filter plate, the outer ring of the flow guiding hood one being fixedly connected to the inner wall of the box cavity; a flow guiding hood two being fixedly connected to the inner wall of the box cavity below the filter plate; the side of the flow guiding hood two away from the filter plate being fixedly connected to the inlet of the slurry discharge pipe; the slurry discharge pipe being used to discharge coal slurry that meets the standards; two flow guiding plates being fixedly connected to the top of the filter plate; a slag discharge pipe being fixedly connected to the left side of the box; a conveying pipe being fixedly connected to the outlet of the slag discharge pipe; a motor two being fixedly connected to the bottom of the conveying pipe; the end of the conveying pipe away from the motor two penetrating the box and extending into the cavity; the openings of the two flow guiding plates being larger on the right and smaller on the left; a rotating shaft one being connected to the top output end of the motor two via a coupling; the outer surface of the rotating shaft one being rotatably connected to the inside of the conveying pipe; an auger being provided inside the cavity of the conveying pipe; the center of the auger being fixedly connected to the outer surface of the rotating shaft one; the rotating shaft one penetrating the conveying pipe and extending into the cavity.

[0007] Furthermore, the grinding assembly includes a motor three fixed to the right side of the top protective cover. The output end of the motor three on the left side is connected to a rotating shaft two via a coupling. The rotating shaft two passes through the protective cover and extends into the cavity of the housing. Two gears with meshing outer surfaces are arranged inside the cavity of the top protective cover. Two grinding rollers are arranged inside the cavity of the housing. The top protective cover provides dust protection for the two gears. There are two rotating shafts two in total. The inner center of the two grinding rollers is fixedly connected to the outer surface of the rotating shaft two, and the inner center of the two gears is fixedly connected to the outer surface of the rotating shaft two, respectively. The outer surfaces of the two rotating shafts two are rotatably connected to the top protective cover and the inner edge of the housing. The two grinding rollers are welded to the two rotating shafts two.

[0008] Furthermore, the range extender reset component is a slide rail fixed to the right side of the housing. A connecting slider is slidably connected inside the slide rail cavity. The bottom of the connecting slider is fixedly connected to the top of the connecting rod. A slide rod fixed to the inner wall of the slide rail is slidably connected inside the connecting slider. A spring fixed to the inner wall of the slide rail is sleeved on the outer surface of the slide rod. The bottom of the spring is fixedly connected to the top of the connecting slider. The connecting slider extends to the outside of the slide rail.

[0009] This utility model has the following beneficial effects: 1. This utility model, through the setting of a filter assembly, specifically, starts a motor to drive the impact block to rotate, which in turn moves the connecting rod upward, simultaneously driving the connecting slider to slide along the slide rail and compress the spring to store force. Through the transmission of the limiting slide groove, the filter plate rotates upward around the pin axis. When the impact stops, the spring rebounds and pushes the reset, and the stop rod limits the landing point. This cycle makes the filter plate vibrate continuously, enhancing the filtration efficiency, quickly separating coal slurry impurities, removing free water, improving permeability and preventing clogging, and ensuring the subsequent concentration process.

[0010] 2. This utility model, by setting up a flow guiding component, specifically, guides large particles intercepted by the filter plate into the slag discharge pipe through vibration and double flow guiding plates. The coarse material in the slag discharge pipe enters the conveying pipe, and is driven by motor 2 to drive shaft 1 to push the screw conveyor back into the box, forming a closed-loop automatic screening and feeding system, reducing manual intervention and significantly improving production efficiency and device practicality.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the box body of this utility model; Figure 3 This is a schematic diagram of the overall structure of the air guide cover of this utility model; Figure 4 This is a schematic diagram of the overall structure of the guide plate of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of A in the middle; Figure 6 This is a schematic diagram of the cross-sectional structure of the conveying pipe of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 111. Housing; 112. Feed inlet; 113. Water inlet; 114. Slurry discharge pipe; 21. Filter assembly; 211. Protective cover; 212. Motor 1; 213. Impact block; 214. Filter plate; 215. Connecting slider; 216. Limiting groove; 217. Stop bar; 218. Connecting rod; 219. Slide rail; 210. Spring; 2111. Slide rod; 22. Flow guiding assembly; 221. Flow guiding cover 1; 222. Flow guiding plate; 223. Flow guiding cover 2; 224. Slag discharge pipe; 225. Conveying pipe; 226. Motor 2; 227. Rotating shaft 1; 228. Screwdriver; 23. Grinding assembly; 231. Grinding roller; 232. Rotating shaft 2; 233. Motor 3; 234. Gear. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-6As shown, this utility model is a rod mill for coal slurry thickening, including a housing 111, a filter assembly 21 installed inside the cavity of the housing 111, a flow guiding assembly 22 installed on the housing 111, and a grinding assembly 23 positioned above the filter assembly 21. The filter assembly 21 includes a filter plate 214 connected to the housing 111 via a pin, the filter plate 214 being disposed inside the cavity of the housing 111. Two protective covers 211 are fixedly connected to the right side of the housing 111. A motor 212 is fixedly connected to the right side of the bottom protective cover 211. An impact block 213 is disposed inside the cavity of the protective cover 211, and a connecting rod 218 contacts the outer surface of the impact block 213. The connecting rod 218 extends through the housing 111 and into the cavity. A limiting groove 216 is provided on the side of the connecting rod 218 away from the impact block 213. The right side of the top of the filter plate 214 is connected to the limiting groove 216 via a pin. A range extender / reset component is provided above the connecting rod 218. Motor 212 provides kinetic energy output for the movement of the filter plate 214. Starting motor 212 drives the impact block 213 to rotate, causing it to collide with the connecting rod 218 and move it upwards. Simultaneously, it drives the connecting slider 215 to slide along the slide rail 219 and compress the spring 210 to store energy. Through the limiting groove 216, the filter plate 214 rotates upwards around the pin. When the impact stops, the spring 210 rebounds and pushes the plate back to its original position. The stop rod 217 limits the landing point. This cycle continues, causing the filter plate 214 to vibrate continuously, enhancing filtration efficiency. This system rapidly separates impurities from coal slurry, removes free water, improves permeability, prevents clogging, and ensures the smooth operation of subsequent concentration processes. The top of the housing 111 is equipped with a feed inlet 112 and a water inlet 113, while the bottom of the housing 111 has a slurry discharge pipe 114. An electrically controlled valve is installed inside the slurry discharge pipe 114. The slurry discharge pipe 114 penetrates the housing 111 and extends into the cavity. The flow guiding assembly 22 includes a first flow guide hood 221 located above the filter plate 214, with its outer ring fixedly connected to the inner wall of the housing 111 cavity. Below the filter plate 214, a second flow guide hood 223 is fixedly connected to the inner wall of the housing 111 cavity. The side of the second flow guide hood 223 away from the filter plate 214 is fixedly connected to the water inlet of the slurry discharge pipe 114. The slurry discharge pipe 114 is used to discharge standard-compliant coal slurry. Two guide plates 222 are fixedly connected to the top of the filter plate 214. A slag discharge pipe 224 is fixedly connected to the left side of the housing 111. A conveying pipe 225 is fixedly connected to the outlet of the slag discharge pipe 224. A motor 226 is fixedly connected to the bottom of the conveying pipe 225. The end of the conveying pipe 225 away from the motor 226 passes through the housing 111 and extends into the cavity. The openings of the two guide plates 222 are wider on the right and narrower on the left. A rotating shaft 227 is connected to the top output end of the motor 226 via a coupling. The outer surface of the rotating shaft 227 is rotatably connected to the inside of the conveying pipe 225. An auger 228 is installed inside the cavity of the conveying pipe 225. The center of the auger 228 is fixedly connected to the outer surface of the rotating shaft 227. The rotating shaft 227 passes through the conveying pipe 225 and extends into the cavity.Large particles intercepted by filter plate 214 are guided by vibration and double guide plates 222 into slag discharge pipe 224. The coarse material in slag discharge pipe 224 enters conveying pipe 225, and is driven by motor 226 to drive shaft 227 to drive auger 228 to push it back to box 111, forming a closed-loop automatic screening and feeding system, reducing manual intervention and significantly improving production efficiency and equipment practicality. Grinding assembly 23 includes motor 3 233 fixed to the right side of top protective cover 211. The output end of motor 3 233 is connected to shaft 232 via coupling. Shaft 232 passes through protective cover 211 and extends into the cavity of box 111. Inside the cavity of top protective cover 211, there are two gears 234 with meshing outer surfaces. Inside the cavity of box 111, there are two grinding rollers 231. Top protective cover 211 provides dust protection for the two gears 234. Shaft 232 provides dust protection for the two grinding rollers 231. The two grinding rollers 231 are fixedly connected at their inner centers to the outer surfaces of the second rotating shaft 232, and the two gears 234 are fixedly connected at their inner centers to the outer surfaces of the second rotating shaft 232. The outer surfaces of the two rotating shafts 232 are rotatably connected to the top protective cover 211 and the inner edge of the housing 111. The two grinding rollers 231 are welded to the two rotating shafts 232. The range extender reset component is a slide rail 219 fixed to the right side of the housing 111. A connecting slider 215 is slidably connected inside the cavity of the slide rail 219. The bottom of the connecting slider 215 is fixedly connected to the top of the connecting rod 218. A slide rod 2111 fixed to the inner wall of the slide rail 219 is slidably connected inside the connecting slider 215. A spring 210 fixed to the inner wall of the slide rail 219 is sleeved on the outer surface of the slide rod 2111. The bottom of the spring 210 is fixedly connected to the top of the connecting slider 215. The connecting slider 215 extends to the outside of the slide rail 219.

[0017] A specific application of this embodiment is as follows: In use, the coal slurry to be processed is fed into the tank 111 through the feed inlet 112. The water inlet 113 can supplement and adjust the water volume according to the initial concentration of the coal slurry. Then, the motor 233 is started, which drives two gears 234 to rotate relative to each other through the shaft 232. During the rotation of the two gears 234, the shaft 232 drives two grinding rollers 231 to rotate synchronously relative to each other. During the relative rotation of the two grinding rollers 231, the coal slurry is ground and processed. The raw material after being ground by the two grinding rollers 231 falls into the guide shroud 221, and then the coal slurry is guided by the grinding rollers 231. Then it falls onto filter plate 214. At this time, motor 212 is started, which drives impact block 213 to rotate. During the rotation of impact block 213, it will impact connecting rod 218, causing connecting rod 218 to move upward under the force. At the same time, during the movement of connecting rod 218, it will synchronously drive connecting slider 215 to slide inside slide rail 219. During the sliding of connecting slider 215, it will also slide on the outer surface of slide rod 2111. Slide rod 2111 provides a certain limit to the movement trajectory of connecting slider 215. During the sliding of connecting slider 215, it will compress spring 210, and spring 210 will... 10, restrained by the inner wall of the slide rail 219, will retract and store force. Simultaneously, during the movement of the connecting rod 218, it will drive the filter plate 214 to move through the limiting groove 216. Since the side of the filter plate 214 furthest from the connecting rod 218 is connected to the housing 111 via a pin, the filter plate 214 will rotate upwards. When the edge of the impact block 213 releases its restraining and lifting effect on the connecting rod 218, the spring 210 will generate a certain rebound force, which will drive the connecting rod 218 to reset via the connecting slider 215. Then, the connecting rod 218, through the limiting groove 216, will synchronously drive the filter plate 214 to move... During the reset process of filter plate 214, the stop rod 217 limits the final landing point of filter plate 214, ensuring that the impact block 213 always impacts the connecting rod 218. At the same time, filter plate 214 will achieve a reciprocating motion of flipping up and down through the limiting slide groove 216 and the spring 210, thereby making filter plate 214 vibrate. The dual effect significantly improves the filtration efficiency, which can quickly separate large impurities in coal slurry and effectively remove excess free water, laying the foundation for the subsequent thickening process. At the same time, by vibrating filter plate 214, the permeability of filter plate 214 can be greatly improved, reducing the possibility of clogging of filter plate 214. Meanwhile, large particles filtered and intercepted by filter plate 214 will be discharged into slag discharge pipe 224 through its vibration and the action of two guide plates 222. The coal slurry will fall into guide hood 223 through filter plate 214 and then be discharged and collected through slurry discharge pipe 114. At the same time, an electric control valve is installed inside slurry discharge pipe 114 to control the discharge amount and closing. Large coal particles entering slag discharge pipe 224 or falling into conveying pipe 225 will be started. At this time, motor 226 will be started to drive shaft 227 to rotate. During the rotation of shaft 227, auger 228 will rotate synchronously. When auger 228 rotates, it will convey the coal in conveying pipe 225. The large coal particles will be sent back into box 111, realizing the effect of automatic screening and feeding, improving the practicality of the device, reducing the labor intensity of subsequent manual sorting, and improving the overall production efficiency. The operation and parameter adjustment of each motor in the equipment can be automated by setting a program on the control panel (such as PLC control). Continuous operation can be completed by inputting parameters according to actual needs.

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.

[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rod mill for coal slurry thickening comprising a casing (111), characterized in that, Also includes: A filter assembly (21) is installed inside the cavity of the housing (111); A flow guiding assembly (22) is mounted on the housing (111); and a grinding assembly (23), which is disposed above the filter assembly (21); The filter assembly (21) includes a filter plate (214) connected to the housing (111) by a pin. The filter plate (214) is disposed inside the cavity of the housing (111). Two protective covers (211) are fixedly connected to the right side of the housing (111). A motor (212) is fixedly connected to the right side of the protective cover (211) at the bottom. An impact block (213) is disposed inside the cavity of the protective cover (211). A connecting rod (218) is in contact with the outer surface of the impact block (213). The connecting rod (218) passes through the housing (111) and extends into the cavity. A limiting groove (216) is provided on the side of the connecting rod (218) away from the impact block (213). The right side of the top of the filter plate (214) is connected to the limiting groove (216) by a pin. An extended range reset component is disposed above the connecting rod (218). Among them, motor 1 (212) provides kinetic energy output for the movement of filter plate (214).

2. A rod mill for coal slurry thickening according to claim 1, characterized in that, The top of the box (111) is equipped with a feed inlet (112) and a water inlet (113), and the bottom of the box (111) is equipped with a slurry discharge pipe (114). The discharge pipe (114) is equipped with an electric control valve. The discharge pipe (114) passes through the box (111) and extends into the cavity.

3. A rod mill for coal slurry thickening according to claim 1, characterized in that, The flow guiding assembly (22) includes a flow guiding cover one (221) located above the filter plate (214), the outer ring of the flow guiding cover one (221) is fixedly connected to the inner wall of the cavity of the box (111), and a flow guiding cover two (223) is provided below the filter plate (214) and is fixedly connected to the inner wall of the cavity of the box (111). The side of the flow guiding cover two (223) away from the filter plate (214) is fixedly connected to the inlet of the slurry discharge pipe (114); Among them, the slurry discharge pipe (114) is used to discharge coal slurry that meets the standards.

4. A rod mill for coal slurry thickening according to claim 3, characterized in that, Two guide plates (222) are fixedly connected to the top of the filter plate (214), a slag discharge pipe (224) is fixedly connected to the left side of the box (111), a conveying pipe (225) is fixedly connected to the outlet of the slag discharge pipe (224), a motor (226) is fixedly connected to the bottom of the conveying pipe (225), and the end of the conveying pipe (225) away from the motor (226) passes through the box (111) and extends into the cavity; Among them, the openings of the two guide vanes (222) are larger on the right and smaller on the left.

5. A rod mill for coal slurry thickening according to claim 4, characterized in that, The top output end of the second motor (226) is connected to the first rotating shaft (227) via a coupling. The outer surface of the first rotating shaft (227) is rotatably connected to the inside of the conveying pipe (225). An auger (228) is provided inside the cavity of the conveying pipe (225). The center of the auger (228) is fixedly connected to the outer surface of the first rotating shaft (227). Among them, the rotating shaft (227) passes through the delivery pipe (225) and extends into the cavity.

6. A rod mill for coal slurry thickening according to claim 1, characterized in that, The grinding assembly (23) includes a motor three (233) fixed on the right side of the top protective cover (211). The output end of the motor three (233) on the left side is connected to a rotating shaft two (232) via a coupling. The rotating shaft two (232) passes through the protective cover (211) and extends into the cavity of the housing (111). Two gears (234) with meshing outer surfaces are provided inside the cavity of the top protective cover (211). Two grinding rollers (231) are provided inside the cavity of the housing (111). The top protective cover (211) provides dust protection for the two gears (234), and the second shaft (232) has two settings.

7. A rod mill for coal slurry thickening according to claim 6, characterized in that, The two grinding rollers (231) are fixedly connected to the outer surface of the second rotating shaft (232) at their inner center, and the two gears (234) are fixedly connected to the outer surface of the second rotating shaft (232) at their inner center. The outer surfaces of the two rotating shafts (232) are rotatably connected to the top protective cover (211) and the inner edge of the box (111). Among them, two grinding rollers (231) are welded to two rotating shafts (232).

8. A rod mill for coal slurry thickening according to claim 1, characterized in that, The range extender reset component is a slide rail (219) fixed on the right side of the housing (111). A connecting slider (215) is slidably connected inside the cavity of the slide rail (219). The bottom of the connecting slider (215) is fixedly connected to the top of the connecting rod (218). A slide rod (2111) fixed to the inner wall of the slide rail (219) is slidably connected inside the connecting slider (215). A spring (210) fixed to the inner wall of the slide rail (219) is sleeved on the outer surface of the slide rod (2111). The bottom of the spring (210) is fixedly connected to the top of the connecting slider (215). The connecting slider (215) is provided to extend to the outside of the slide rail (219).

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