Gangue high-efficiency pulverizing device for dry coal separation

Abstract

The application discloses a gangue high-efficiency crushing device for dry coal separation, which comprises a processing bin and a crushing assembly, an installation opening is formed in the top surface of the processing bin, and a detection opening is formed in the top surface of the processing bin; the crushing assembly is arranged between the interiors of the processing bin, and comprises two mounting frames, a guide groove, a second crushing bin, a first crushing bin, an oil cylinder frame, two hydraulic oil cylinders, a crushing block, a guide rod and two second crushing rollers. The gangue after crushing is moved and transported through cooperation of the guide groove and the guide shaft, and the spraying and mixing of acid leaching liquid are realized through cooperation of the acid leaching liquid spraying assembly, the effect of aluminum production and cement preparation is improved, the second crushing bin and the first crushing bin gradually crush the gangue, the size of the gangue is adjusted, the contact area between the gangue and the acid leaching liquid is improved, and the smoke and dust in the transportation process and the sorting process are reduced.

Description

Technical Field

[0001] This invention belongs to the field of dry coal preparation technology, specifically a high-efficiency crushing device for gangue in dry coal preparation. Background Technology

[0002] Coal preparation, also known as coal washing, is the process of separating clean coal from raw coal to meet the quality requirements of users. Coking coal has certain requirements for ash and sulfur content, and must use clean coal that has been washed. The petrographic composition of coal, as well as the quantity, type, properties and distribution of minerals in the coal, are all factors that affect the coal's washability.

[0003] Depending on the difficulty of raw coal washing, common processes used in coal preparation plants include jigging, heavy medium cyclone separators, heavy medium shallow troughs, moving screen jigging, and flotation. Other coal preparation methods include air separation and spiral separators.

[0004] Dry coal preparation, also known as air separation, uses self-generated medium (pulverized coal) as the gas-solid phase mixing medium for separation. It requires no resources and relies solely on wind power, thus allowing for a wide range of particle sizes of the feed material. Mechanical vibration causes the material to move in an approximately spiral motion, and wind power loosens the bed and mixes it with fine materials to form a mixing medium. It is not necessary to blow the material off the bed surface, so the required air volume is small. Furthermore, the buoyancy effect generated by the interaction of particles in the bed is utilized, and the bed density is greater closer to the gangue end. Therefore, a wide range of pure gangue with a wide particle size range can be obtained.

[0005] Gangue, also known as coal gangue, is a type of rock mixed in with coal seams. It contains a small amount of combustible material and is not easily burned. During mining, it refers to the loose stones extracted from underground or mixed into the ore, and the thin rock layers between coal seams are called "intercalated rocks." Gangue piles on the mine surface are called "gangue mountains," and some gangue can be used as raw materials for building materials.

[0006] In existing dry coal preparation operations, crushers are typically used to pulverize the collected materials, followed by mechanical screening and wind power to separate the gangue and coal. After separation, a gas recovery and collection device filters the gas to reduce the pollution of external air caused by dry coal preparation. However, existing dry coal preparation methods lack gangue treatment. They usually use winches to lift the gangue, turn it over, and dump it into piles in the open air. This method occupies a lot of land, and when coal gangue is piled up in the open, it is easy to weather into fine particles that are carried into the atmosphere. The combustible hydrocarbons in these fine particles undergo a series of complex reactions such as oxidation, decomposition, dehydrogenation, and condensation at high temperatures to form particulate suspensions such as carbon black and fly ash, which contribute to smog. Summary of the Invention

[0007] Based on the problems existing in the prior art, this invention proposes a high-efficiency gangue crushing device for dry coal preparation. The components are installed through the mounting frame in the crushing assembly. The guide groove and guide shaft cooperate to move and transport the crushed gangue. At the same time, it cooperates with the acid leaching solution spraying assembly to spray and mix the acid leaching solution, thereby improving the effect of aluminum production and cement preparation. The No. 2 crushing chamber and the No. 1 crushing chamber crush the gangue step by step, so that the size of the gangue can be adjusted, increasing the contact area between the gangue and the acid leaching solution, thereby improving the mixing effect. At the same time, it also reduces the dust during the transportation and sorting process.

[0008] The technical solution adopted in this invention is as follows: A high-efficiency crushing device for gangue in dry coal preparation, comprising: a processing chamber, wherein the top surface of the processing chamber has an installation port and an inlet port; a crushing assembly, wherein the crushing assembly is disposed inside the processing chamber, the crushing assembly comprising two mounting frames, a guide groove, a second crushing chamber, a first crushing chamber, a cylinder frame, two hydraulic cylinders, crushing blocks, a guide rod, and two second crushing rollers, the two mounting frames are respectively fixedly connected to the inner walls of both sides of the processing chamber, the guide groove is installed between the inner walls of one side of the two mounting frames, the second crushing chamber is fixedly connected to the top surface of the guide groove, and the first crushing chamber... The first crushing chamber is fixedly connected to the top surface of the second crushing chamber. A sliding port is opened on one side of the outer wall of the first crushing chamber. The cylinder frame extends from one side of the outer wall of the first crushing chamber. Two hydraulic cylinders are installed on one side of the outer wall of the cylinder frame. The crushing block is fixedly connected between the output ends of the two hydraulic cylinders and is slidably connected to the sliding port. The guide rod extends from one side of the inner wall of the first crushing chamber and is slidably engaged with the crushing block. Two second crushing rollers are rotatably connected between the inner walls of the second crushing chamber. An acid leaching solution spraying assembly is installed inside the processing chamber to spray and mix the crushed gangue.

[0009] The crushing assembly further includes a baffle plate, two limiting rods, and a guide shaft. The baffle plate extends into the inner wall of the first crushing chamber. Both limiting rods extend into one end of the crushing block and movably pass through the cylinder frame. A limiting plate is fixedly connected between one end of the two limiting rods. The guide shaft is rotatably connected to the inner wall of one side of the guide groove, and a conveying blade extends from the outer wall of the guide shaft.

[0010] The outer walls of the two second-stage crushing rollers are fitted with synchronous pulleys, which are connected by a synchronous belt drive. A crushing roller motor is installed on one side of the outer wall of the second-stage crushing chamber, and the output end of the crushing roller motor is fixedly connected to one end of one of the second-stage crushing rollers.

[0011] The mounting bracket has a transmission motor installed on one outer wall, and the output end of the transmission motor is fixedly connected to one end of the guide shaft.

[0012] The acid leaching solution spraying assembly includes a mounting platform, spray pipes, and a distributor. The mounting platform is fixedly connected to the top surface of the treatment chamber. Each group of spray pipes is provided with multiple pipes, and each group of multiple spray pipes is inserted into the interior of the mounting platform. A distributor is fixedly connected between the input ends of each group of multiple spray pipes.

[0013] The processing chambers are equipped with conveyor belts and screening racks.

[0014] The screening rack has a metal screen installed inside, and a vibration motor is installed on the top surface of the metal screen.

[0015] The processing chamber has two fans installed on one inner wall and multiple ventilation openings on one outer wall.

[0016] The processing chamber has support frames fixedly connected to both outer walls.

[0017] The bottom surface of the processing chamber is provided with multiple collection chambers.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] (1) In this invention, the components are installed by the mounting frame in the crushing assembly. The guide groove and guide shaft cooperate to move and transport the crushed gangue. At the same time, it cooperates with the acid leaching liquid spraying assembly to spray and mix the acid leaching liquid, thereby improving the effect of aluminum production and cement preparation. The No. 2 crushing chamber and the No. 1 crushing chamber gradually crush the gangue, so that the size of the gangue can be adjusted, increasing the contact area between the gangue and the acid leaching liquid, thereby improving the mixing effect. At the same time, it also reduces the dust in the transportation and sorting process.

[0020] (2) In this invention, the crushing block is driven by the hydraulic cylinder to perform initial crushing of the gangue. At the same time, the larger gangue cannot fall directly over the crushing block, which makes it easier for the staff to control the size of the gangue. Two No. 2 crushing rollers work together to crush the gangue a second time, further reducing the size of the gangue and thus improving the mixing effect. Meanwhile, the gangue is classified and collected by a metal screening mesh, so that gangue of different sizes can be used for different purposes. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a rear perspective view of the present invention;

[0023] Figure 3 This is a cross-sectional perspective view of the present invention;

[0024] Figure 4 This is a perspective view of the pulverizing component of the present invention;

[0025] Figure 5 This is a rear perspective view of the crushing component of the present invention;

[0026] Figure 6 This is a partial perspective view of the pulverizing component of the present invention;

[0027] Figure 7 This is a partial bottom perspective view of the crushing component of the present invention;

[0028] Figure 8 This is a perspective view of the acid leaching solution spraying assembly of the present invention.

[0029] The diagram shows the following components: 1. Processing chamber; 2. Crushing assembly; 201. Mounting frame; 202. Guide chute; 203. Second crushing chamber; 204. First crushing chamber; 205. Cylinder frame; 206. Hydraulic cylinder; 207. Crushed block; 208. Guide rod; 209. Baffle plate; 210. Limiting rod; 211. Guide shaft; 212. Second crushing roller; 213. Crushing roller motor; 3. Acid leaching solution spraying assembly; 301. Mounting platform; 302. Spray pipe; 303. Diverter; 304. Probe inlet; 4. Conveyor belt; 5. Screening rack; 6. Metal screen; 7. Vibration motor; 8. Fan; 9. Ventilation outlet; 10. Collection chamber; 11. Support frame. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] This invention discloses a high-efficiency pulverizing device for dry coal preparation gangue, comprising a processing chamber and a pulverizing assembly. The top surface of the processing chamber has an installation port and an inlet port. The pulverizing assembly is disposed within the processing chamber and includes two mounting frames, a guide groove, a second pulverizing chamber, a first pulverizing chamber, a cylinder frame, two hydraulic cylinders, pulverizing blocks, a guide rod, and two second pulverizing rollers. The two mounting frames are respectively fixedly connected to the inner walls of both sides of the processing chamber. The guide groove is installed between the inner walls of one side of the two mounting frames. The second pulverizing chamber is fixedly connected to the top surface of the guide groove, and the first pulverizing chamber is fixedly connected to... The top surface of the No. 2 crushing chamber, a sliding opening is provided on one side of the outer wall of the No. 1 crushing chamber, the cylinder frame extends and is provided on one side of the outer wall of the No. 1 crushing chamber, two hydraulic cylinders are installed on one side of the outer wall of the cylinder frame, the crushing block is fixedly connected between the output ends of the two hydraulic cylinders, and the crushing block and the sliding opening are slidably connected, the guide rod extends and is provided on one side of the inner wall of the No. 1 crushing chamber, and the guide rod and the crushing block are slidably engaged, two No. 2 crushing rollers are rotatably connected between the inner walls of the No. 2 crushing chamber; and an acid leaching solution spraying assembly is installed inside the processing chamber to spray and mix the crushed gangue.

[0032] The crushing assembly further includes a baffle plate, two limiting rods, and a guide shaft. The baffle plate extends into the inner wall of the first crushing chamber. Both limiting rods extend into one end of the crushed block and movably pass through the cylinder frame. A limiting plate is fixedly connected between the ends of the two limiting rods. The guide shaft is rotatably connected to one side of the inner wall of the guide groove, and a conveying blade extends from the outer wall of the guide shaft. Synchronous pulleys are fitted onto the outer walls of the two second crushing rollers, and the two synchronous pulleys are connected by a synchronous belt drive. A crushing roller motor is installed on one side of the outer wall of the second crushing chamber, and the output end of the crushing roller motor is fixedly connected to one end of one of the second crushing rollers. A transmission motor is installed on one side of the outer wall of the mounting frame, and the output end of the transmission motor is fixedly connected to one end of the guide shaft.

[0033] The system further includes an acid leaching solution spraying assembly, comprising a mounting platform, spray pipes, and a distributor. The mounting platform is fixedly connected to the top surface of the treatment chamber. Multiple spray pipes are provided in each group, and each group of multiple spray pipes is inserted into the interior of the mounting platform. A distributor is fixedly connected between the input ends of each group of multiple spray pipes. A conveyor belt is installed between the inner walls of the treatment chamber, and a screening rack is installed between the inner walls of the treatment chamber. A metal screen is installed inside the screening rack, and a vibration motor is installed on the top surface of the metal screen. Two fans are installed on one inner wall of the treatment chamber, and multiple ventilation openings are provided on one outer wall of the treatment chamber. Support frames are fixedly connected to both outer walls of the treatment chamber, and multiple collection chambers are provided on the bottom surface of the treatment chamber.

[0034] The following description, in conjunction with the accompanying drawings, further illustrates a high-efficiency gangue crushing device for dry coal preparation according to the present invention. Figure 1-6 A high-efficiency gangue crushing device for dry coal preparation, comprising:

[0035] Processing chamber 1 has an installation port and an inlet 304 on its top surface. Crushing assembly 2 is located inside processing chamber 1 and includes two mounting brackets 201, a guide groove 202, a second crushing chamber 203, a first crushing chamber 204, a cylinder frame 205, two hydraulic cylinders 206, crushing blocks 207, guide rods 208, and two second crushing rollers 212. The two mounting brackets 201 are fixedly connected to the inner walls of both sides of processing chamber 1. The guide groove 202 is installed between the inner walls of one side of the two mounting brackets 201. The second crushing chamber 203 is fixedly connected to the top surface of the guide groove 202, and the first crushing chamber 204 is fixedly connected to the second crushing chamber 203. On the top surface, a sliding opening is provided on one side of the outer wall of the No. 1 crushing chamber 204. The cylinder frame 205 extends and is provided on one side of the outer wall of the No. 1 crushing chamber 204. Two hydraulic cylinders 206 are installed on one side of the outer wall of the cylinder frame 205. The crushing block 207 is fixedly connected between the output ends of the two hydraulic cylinders 206, and the crushing block 207 is slidably connected to the sliding opening. The guide rod 208 extends and is provided on one side of the inner wall of the No. 1 crushing chamber 204, and the guide rod 208 and the crushing block 207 are slidably engaged. Two No. 2 crushing rollers 212 are rotatably connected between the inner walls of the No. 2 crushing chamber 203. The acid leaching liquid spraying assembly 3 is installed inside the processing chamber 1 and is used to spray and mix the crushed gangue.

[0036] In this embodiment: A crushing assembly 2 and an acid leaching solution spraying assembly 3 are installed in the processing chamber 1. The mounting bracket 201 in the crushing assembly 2 is used to install the components. The guide groove 202 cooperates with the guide shaft 211 to move and transport the crushed gangue. Simultaneously, it cooperates with the acid leaching solution spraying assembly 3 to spray and mix the acid leaching solution, improving the efficiency of aluminum production and cement preparation. The second crushing chamber 203 and the first crushing chamber 204 gradually crush the gangue, allowing for adjustment of the gangue size and increasing the contact area between the gangue and the acid leaching solution, thereby improving the mixing effect and reducing... During transportation and sorting, the dust generated by the process is mitigated by the coordinated action of the hydraulic cylinder frame 205, two hydraulic cylinders 206, crushing block 207, and guide rod 208. This allows the hydraulic cylinder 206 to drive the crushing block 207 in reciprocating motion, initially crushing the gangue. Larger pieces of gangue cannot fall directly over the crushing block 207, making it easier for workers to control the size of the gangue. Two secondary crushing rollers 212 work together to further crush the gangue, thereby improving the mixing effect. The acid leaching solution spraying component 3 sprays and mixes the gangue with acid leaching solution, improving the efficiency of aluminum production and cement preparation, while also reducing dust.

[0037] Specifically: The crushing assembly 2 also includes a baffle plate 209, two limiting rods 210 and a guide shaft 211. The baffle plate 209 extends into the inner wall of the first crushing chamber 204. The two limiting rods 210 extend into one end of the crushing block 207 and both limiting rods 210 movably pass through the cylinder frame 205. A limiting plate is fixedly connected between one end of the two limiting rods 210. The guide shaft 211 is rotatably connected to the inner wall of one side of the guide groove 202. A conveying blade extends from the outer wall of the guide shaft 211.

[0038] In this embodiment: the top surface of the crushed block 207 is blocked by the baffle plate 209 to prevent the gangue from jamming the crushed block 207. The limiting rod 210 and the guide shaft 211 cooperate to restrict the movement path of the crushed block 207 to prevent it from deviating or misaligning.

[0039] Specifically: Synchronous pulleys are fitted on the outer walls of the two No. 2 crushing rollers 212, and the two synchronous pulleys are connected by a synchronous belt drive. A crushing roller motor 213 is installed on one side of the outer wall of the No. 2 crushing chamber 203, and the output end of the crushing roller motor 213 is fixedly connected to one end of one of the No. 2 crushing rollers 212.

[0040] In this embodiment, the transmission between the two No. 2 crushing rollers 212 is completed by a synchronous pulley and a synchronous belt. When the crushing roller motor 213 drives one of the No. 2 crushing rollers 212 to rotate, the other No. 2 crushing roller 212 also rotates together.

[0041] Specifically: A transmission motor is installed on one outer wall of the mounting bracket 201, and the output end of the transmission motor is fixedly connected to one end of the guide shaft 211.

[0042] In this embodiment: the guide shaft 211 is rotated by the transmission motor to move and transport the crushed gangue. The top surface of the guide groove 202 is open, so that the acid leaching liquid spraying component 3 can directly spray and mix.

[0043] Specifically: the acid leaching solution spraying assembly 3 includes a mounting platform 301, spray pipes 302 and a distributor 303. The mounting platform 301 is fixedly connected to the top surface of the processing chamber 1. Each group of spray pipes 302 is provided with multiple pipes. Each group of multiple spray pipes 302 is inserted into the interior of the mounting platform 301. A distributor 303 is fixedly connected between the input ends of each group of multiple spray pipes 302.

[0044] In this embodiment: a spray pipe 302 and a distributor 303 are set up by a mounting platform 301. The distributor 303 is connected to an existing water pump, and then the acid leaching solution is sprayed by the spray pipe 302 to achieve mixing between the acid leaching solution and the gangue.

[0045] Specifically: a conveyor belt 4 is installed between the inner walls of the processing chamber 1, and a screening rack 5 is installed between the inner walls of the processing chamber 1.

[0046] In this embodiment, the crushed and mixed gangue is transported by conveyor belt 4, thereby reducing the space volume required for processing bin 1.

[0047] Specifically: a metal screen 6 is installed inside the screening rack 5, and a vibration motor 7 is installed on the top surface of the metal screen 6.

[0048] In this embodiment: the vibration motor 7 drives the metal screen 6 and the screening frame 5 to vibrate, so that the crushed gangue passes through the metal screen 6 respectively, thereby classifying gangue of different sizes.

[0049] Specifically: Two fans 8 are installed on one inner wall of the processing chamber 1, and multiple ventilation openings 9 are opened on one outer wall of the processing chamber 1.

[0050] In this embodiment: the fan 8 blows the gangue, thereby improving the sorting and screening effect, and the vent 9 is used to exhaust the gas blown in by the fan 8 to prevent the gas from entering the collection chamber 10.

[0051] Specifically: Support frames 11 are fixedly connected to both outer walls of the processing chamber 1.

[0052] In this embodiment, the processing chamber 1 is supported by the support frame 11 to improve its fixation effect, and with the assistance of a forklift, the device can be transported and moved.

[0053] Specifically: The bottom surface of the processing chamber 1 is provided with multiple collection chambers 10.

[0054] In this embodiment, gangue of different sizes is collected by the collection bin 10, so as to carry out aluminum production, landfill or cement production respectively.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gangue efficient pulverizing device for dry coal separation, characterized in that, Include: Processing bin (1), the top surface of the processing bin (1) is provided with a mounting port, and the top surface of the processing bin (1) is provided with a probe inlet (304); The crushing assembly (2) is arranged between the inside of the processing bin (1), and the crushing assembly (2) comprises two mounting racks (201), a guide groove (202), a second crushing bin (203), a first crushing bin (204), an oil cylinder rack (205), two hydraulic oil cylinders (206), a crushing block (207), a guide rod (208) and two second crushing rollers (212), the two mounting racks (201) are fixedly connected to the inner walls of the two sides of the processing bin (1) respectively, the guide groove (202) is mounted between the inner walls of one side of the two mounting racks (201), the second crushing bin (203) is fixedly connected to the top surface of the guide groove (202), the first crushing bin (204) is fixedly connected to the top surface of the second crushing bin (203), a sliding port is formed in the outer wall of one side of the first crushing bin (204), the oil cylinder rack (205) is arranged on the outer wall of one side of the first crushing bin (204), the two hydraulic oil cylinders (206) are mounted on the outer wall of one side of the oil cylinder rack (205), the crushing block (207) is fixedly connected between the output ends of the two hydraulic oil cylinders (206), and the crushing block (207) is in sliding connection with the sliding port, the guide rod (208) is arranged on the inner wall of one side of the first crushing bin (204), and the guide rod (208) is in sliding connection with the crushing block (207), and the two second crushing rollers (212) are rotatably connected between the inner walls of the second crushing bin (203); and the acid leaching liquid spraying assembly (3) is mounted in the inside of the processing bin (1), and is used for spraying and mixing the crushed gangue; The acid leaching liquid spraying assembly (3) comprises a mounting table (301), a spraying pipe (302) and a flow divider (303), the mounting table (301) is fixedly connected to the top surface of the processing bin (1), each group of the spraying pipes (302) is provided with a plurality of spraying pipes (302), each group of the plurality of spraying pipes (302) is inserted into the inside of the mounting table (301), and the input ends of each group of the plurality of spraying pipes (302) are fixedly connected with the flow divider (303); The inner walls of the processing bin (1) are provided with a conveying belt (4), and the inner walls of the processing bin (1) are provided with a screening frame (5); the inside of the screening frame (5) is provided with a metal screening net (6), the top surface of the metal screening net (6) is provided with a vibration motor (7); one side of the processing bin (1) is provided with two fans (8), and the outer wall of one side of the processing bin (1) is provided with a plurality of ventilation openings (9); The top surface of the guide groove (202) is open; The crushing assembly (2) further comprises a shielding plate (209), two limiting rods (210) and a guide shaft (211), the shielding plate (209) is extendedly arranged on the inner wall of the first crushing bin (204), the two limiting rods (210) are both extendedly arranged on one end of the crushing block (207), and the two limiting rods (210) are both movably penetrated through the oil cylinder frame (205), the limiting plate is fixedly connected between one end of the two limiting rods (210), the guide shaft (211) is rotatably connected to the inner wall of one side of the guide groove (202), and the outer wall of the guide shaft (211) is extendedly provided with a transmission blade; The outer wall of the two second crushing rollers (212) is sleeved with a synchronous wheel, the two synchronous wheels are drivingly connected through a synchronous belt, and the outer wall of one side of the second crushing bin (203) is provided with a crushing roller motor (213); and the output end of the crushing roller motor (213) is fixedly connected with one end of one second crushing roller (212).

2. The high-efficiency gangue crushing device for dry coal separation according to claim 1, characterized in that: The outer wall of one side of the mounting frame (201) is provided with a transmission motor, and the output end of the transmission motor is fixedly connected with one end of the guide shaft (211).

3. The high-efficiency gangue crushing device for dry coal separation according to claim 1, characterized in that: The outer walls of the two sides of the processing bin (1) are both fixedly provided with a supporting frame (11).

4. The high-efficiency gangue crushing device for dry coal separation according to claim 3, characterized in that: The bottom surface of the processing bin (1) is provided with a plurality of collecting bins (10).

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