Efficient coal crushing device

Abstract

The utility model discloses an efficient coal crushing device. The efficient coal crushing device comprises a crushing box, the crushing part is arranged in the crushing box, the crushing part comprises two driving discs rotationally arranged in the crushing box, a plurality of ring hammers are arranged between the two driving discs, and a screen is arranged at the bottom of the crushing box; the dust falling mechanism is arranged at one end of the smashing box, the smashing box comprises a dust removal box which is fixedly connected to one side of the smashing box and communicates with the smashing box, the top of the dust removal box is connected with a negative pressure part, and the negative pressure part comprises a filter pipe and a draught fan used for generating negative pressure on the filter pipe; the coal crushing device has the beneficial effects that due to the arrangement of the dust falling mechanism, dust pollution generated in the coal crushing process is effectively avoided through the synergistic effect of the dust removal box, the dust discharge pipeline, the filter pipe, the fan and other components; coal dust can be filtered out through the spiral blades and the filtering holes in the filtering pipe, and meanwhile filtered impurities can be conveniently discharged through the rotating function of the spiral blades.

Description

Technical Field

[0001] This utility model relates to the field of coal processing technology, specifically to a high-efficiency coal crushing device. Background Technology

[0002] In its raw ore state, coal often has a large particle size and cannot be directly used for combustion, chemical reactions, or other processes. By crushing coal to reduce its particle size, its surface area can be increased, thereby increasing the contact area with air, reactants, or other substances, and promoting the efficiency of coal combustion, gasification, or other processing technologies.

[0003] In its raw ore state, coal often has a large particle size and cannot be directly used for combustion, chemical reactions, or other processes. By crushing coal to reduce its particle size, its surface area can be increased, thereby increasing the contact area with air, reactants, or other substances, and promoting the efficiency of coal combustion, gasification, or other processing technologies.

[0004] Coal crushing generates a large amount of dust, and existing crushing equipment lacks corresponding dust suppression measures. Coal dust is not only harmful to the health of operators, but may also have many adverse effects on equipment, environment, and production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency coal crushing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency coal crushing device, comprising:

[0007] Grinding box;

[0008] The pulverizing section is placed inside the pulverizing box. The pulverizing section includes two drive discs that rotate inside the pulverizing box. Multiple ring hammers are arranged between the two drive discs. A screen is provided at the bottom of the pulverizing box.

[0009] The dust collection mechanism is located at one end of the crushing box. The crushing box includes a dust collection box fixed to one side of the crushing box and communicating with the crushing box. The top of the dust collection box is connected to a negative pressure part, which includes a filter pipe and a fan for generating negative pressure on the filter pipe. The filter pipe is provided with spiral blades with filter holes inside for filtering and conveying impurities after screening.

[0010] Preferably, the top of the crushing box is provided with a feed inlet, and the bottom of the crushing box is provided with a discharge outlet below the screen.

[0011] Preferably, the middle part of the crushing box is rotatably connected to a rotating shaft that is fixed to the drive disc, and one end of the rotating shaft passes through the crushing box and is fixed to a large pulley.

[0012] Preferably, multiple fixed rods are fixed at equal angles between the two drive discs with the drive discs as the center. The ring hammer is rotatably mounted on the outside of the fixed rods. An impact plate is fixed inside the crushing box, and the screen is fixed in the middle of the impact plate.

[0013] Preferably, the top of the dust collector is connected to the filter pipe via a dust discharge pipe. One end of the filter pipe is detachably fitted with a connecting cover. One end of the connecting cover is fixedly connected to a motor. The output end of the motor is fixedly connected to a drive shaft. The spiral blades are fixedly connected to the outside of the drive shaft.

[0014] Preferably, a feed pipe is fixedly connected to the bottom of the filter tube, and a sealing cap is threadedly connected to the bottom of the feed pipe.

[0015] Preferably, a dust collection box is fixedly connected to the output end of the fan, and a spray pipe is fixedly connected to the top of the dust collection box.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: The arrangement of two drive discs and multiple ring hammers achieves effective impact and shearing crushing of coal, improving crushing efficiency; the screen allows for effective separation of crushed coal particles, with fine particles discharged through the screen while larger particles remain in the crushing chamber for further crushing, achieving fine screening; the dust suppression mechanism, through the coordinated action of components such as the dust collector, dust discharge pipe, filter pipe, and fan, effectively avoids dust pollution generated during coal crushing; the spiral blades and filter holes in the filter pipe filter out coal dust, while the rotation of the spiral blades facilitates the discharge of filtered impurities; the dust collection box and spray pipe provide dust suppression treatment for the pre-filtered dust, reducing environmental pollution. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the spiral blade of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the sieve of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the ring hammer of this utility model.

[0021] In the diagram: 1. Crushing box; 2. Large pulley; 3. Drive disc; 4. Fixed rod; 5. Ring hammer; 6. Dust collector; 7. Dust discharge pipe; 8. Filter pipe; 9. Feed pipe; 10. Sealing cover; 11. Motor; 12. Fan; 13. Dust collection box; 14. Spray pipe; 15. Drive shaft; 16. Spiral blade; 17. Filter hole; 18. Screen; 19. Connecting cover. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 , 2 As shown in Figures 3 and 4, this utility model provides a technical solution: a high-efficiency coal crushing device, comprising: a crushing box 1; a crushing section placed inside the crushing box 1, the crushing section including two drive discs 3 rotating inside the crushing box 1, a plurality of ring hammers 5 rotatably arranged between the two drive discs 3, and a screen 18 provided at the bottom of the crushing box 1; a dust removal mechanism placed at one end of the crushing box 1, the crushing box 1 including a dust removal box 6 fixed to one side of the crushing box 1 and communicating with the crushing box 1, a negative pressure section connected to the top of the dust removal box 6, the negative pressure section including a filter pipe 8 and a fan 12 for generating negative pressure on the filter pipe 8, the filter pipe 8 having spiral blades 16 with filter holes 17 inside, for filtering and conveying impurities after screening.

[0024] It should be noted that the screen 18 at the bottom of the crushing box of this utility model is mainly used to screen the already crushed coal particles. Only fine particles that pass through the screen can continue to flow downwards, while larger particles remain in the crushing box to continue to be crushed. To avoid dust pollution generated during coal crushing, a dust suppression mechanism is provided at one end of the crushing box. This mechanism connects the crushing box and the dust collection box 6 to form a closed system. A negative pressure section is connected to the top of the dust collection box. The fan 12 generates negative pressure on the filter pipe 8, creating airflow that draws in the dust from the dust collection box. The filter pipe 8 has spiral blades 16 inside, with filter holes 17 on the blades that effectively filter out coal dust. The filtered coal dust and impurities are then transported to one end by the spiral blades 16 and discharged.

[0025] Please see Figure 1 , 3 As shown in Figure 4, the top of the crushing box 1 is provided with a feed inlet, and the bottom of the crushing box 1 is provided with a discharge outlet below the screen 18. The middle part of the crushing box 1 is rotatably connected to a rotating shaft that is fixed to the drive disc 3. One end of the rotating shaft passes through the crushing box 1 and is fixed to a large pulley 2. Between the two drive discs 3, multiple fixed rods 4 are fixed at equal angles with the drive disc 3 as the center. The ring hammer 5 is rotatably installed on the outside of the fixed rods 4. An impact plate is fixed inside the crushing box 1, and the screen 18 is fixed to the middle of the impact plate.

[0026] It should be noted that in this utility model, coal enters the crushing box through the feed end and is crushed by the internal crushing components. The crushing section mainly consists of two drive discs 3 and multiple ring hammers 5. The drive discs 3 rotate inside the crushing box, driving the ring hammers 5 to crush the coal. The ring hammers 5 crush the coal through impact and shearing action. The rotation of the two drive discs 3 ensures that the ring hammers 5 alternately impact in different directions, enhancing the crushing effect and avoiding local overload or uneven crushing. The feed inlet is located at the top of the crushing box 1 and is responsible for feeding the coal to be crushed into the crushing box. The discharge outlet is located below the screen 18 and discharges the crushed and screened coal particles through the discharge outlet. 2. A rotating shaft is rotatably connected to the middle of the crushing box 1 and is fixed to the drive discs 3. The rotating shaft drives the rotation of the drive discs 3. The material is transmitted to the ring hammer 5, thereby achieving coal crushing; one end of the rotating shaft is connected to an external drive system (such as a motor) through a large pulley 2; the large pulley drives the rotating shaft to rotate through the belt drive system, thereby driving the drive disc 3 and the ring hammer 5; the ring hammer is rotatably mounted on the outside of the fixed rod 4, so that the ring hammer can rotate freely around the fixed rod, thereby continuously impacting and crushing the coal; the ring hammer is made of a high wear-resistant alloy material to cope with wear during the crushing process; the number and arrangement of the ring hammers affect the crushing efficiency; an impact plate is fixedly connected inside the crushing box 1, the function of the impact plate is to provide a rebound surface for the ring hammer when it impacts the coal, thereby enhancing the crushing effect of the coal; the screen 18 is fixedly connected to the middle of the impact plate, so that larger coal particles and smaller particles are separated through the screen after crushing.

[0027] Please see Figure 1 , 2 As shown, the top of the dust collector 6 is connected to the filter tube 8 via the dust discharge pipe 7. A connecting cover 19 is detachably installed at one end of the filter tube 8. A motor 11 is fixedly connected to one end of the connecting cover 19. A drive shaft 15 is fixedly connected to the output end of the motor 11. Spiral blades 16 are fixedly connected to the outside of the drive shaft 15. A discharge pipe 9 is fixedly connected to the bottom of the filter tube 8. A sealing cover 10 is threadedly connected to the bottom of the discharge pipe 9.

[0028] It should be noted that the sealing cover 10 of this utility model seals the feed pipe 9, making the filter pipe 8 a closed space. The air inlet of the blower 12 is connected to the filter pipe 8. The blower 12 generates negative pressure in the filter pipe 8, causing the dust from the crushing process to enter the filter pipe 8 through the dust collection box 6 and the dust discharge pipe 7. Under the suction of the blower 12, the dust passes through the filter hole 17 in the middle of the spiral blade 16 and moves towards the blower 12. Large particles are filtered into the screen by the spiral blade 16. After the crushing box 1 stops, the motor 11 can drive the drive shaft 15 to rotate. The drive shaft 15 drives the spiral blade 16 to rotate in the filter pipe 8, thereby transporting the impurities inside the filter pipe 8 to the feed pipe 9. The sealing cover 10 is opened to discharge the impurities inside the feed pipe 9. When it is necessary to clean the spiral blade 16, the bolts connecting the connecting cover 19 and the filter pipe 8 are removed, and then the connecting cover 19 and the drive shaft 15 are removed from one end to facilitate cleaning of the spiral blade 16.

[0029] Please see Figure 1 As shown, a dust collection box 13 is fixedly connected to the output end of the fan 12, and a spray pipe 14 is fixedly connected to the top of the dust collection box 13.

[0030] It should be noted that the dust particles after preliminary filtration of this utility model enter the dust collection box 13 through the fan 12, and the spray pipe 14 sprays water into the dust collection box 13 to reduce the dust.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0032] Furthermore, the terms "first," "second," "third," and "fourth" 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," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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 utility model according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency coal crushing device, characterized in that: include: Crushing box (1); The pulverizing section is placed inside the pulverizing box (1). The pulverizing section includes two drive discs (3) rotating inside the pulverizing box (1). Multiple ring hammers (5) are arranged between the two drive discs (3). A screen (18) is provided at the bottom of the pulverizing box (1). The dust collection mechanism is located at one end of the crushing box (1). The crushing box (1) includes a dust collection box (6) fixed to one side of the crushing box (1) and communicating with the crushing box (1). The top of the dust collection box (6) is connected to a negative pressure part. The negative pressure part includes a filter tube (8) and a fan (12) for generating negative pressure on the filter tube (8). The filter tube (8) is provided with a spiral blade (16) with filter holes (17) inside, which is used to filter and transport impurities after screening.

2. The high-efficiency coal crushing device according to claim 1, characterized in that: The top of the crushing box (1) is provided with a feed inlet, and the bottom of the crushing box (1) is provided with a discharge outlet below the screen (18).

3. The high-efficiency coal crushing device according to claim 1, characterized in that: The crushing box (1) is rotatably connected to a rotating shaft that is fixed to the drive disc (3). One end of the rotating shaft passes through the crushing box (1) and is fixed to a large pulley (2).

4. The high-efficiency coal crushing device according to claim 1, characterized in that: Multiple fixed rods (4) are fixed at equal angles between the two drive discs (3) with the drive discs (3) as the center. The ring hammer (5) is rotatably installed on the outside of the fixed rods (4). An impact plate is fixed inside the crushing box (1). The screen (18) is fixed in the middle of the impact plate.

5. The high-efficiency coal crushing device according to claim 1, characterized in that: The top of the dust collection box (6) is connected to the filter pipe (8) through the dust discharge pipe (7). One end of the filter pipe (8) is detachably fitted with a connecting cover (19). One end of the connecting cover (19) is fixedly connected to a motor (11). The output end of the motor (11) is fixedly connected to a drive shaft (15). The spiral blade (16) is fixedly connected to the outside of the drive shaft (15).

6. The high-efficiency coal crushing device according to claim 5, characterized in that: The bottom of the filter tube (8) is fixedly connected to a feed tube (9), and the bottom of the feed tube (9) is threadedly connected to a sealing cap (10).

7. The high-efficiency coal crushing device according to claim 6, characterized in that: The output end of the fan (12) is fixedly connected to a dust collection box (13), and the top of the dust collection box (13) is fixedly connected to a spray pipe (14).

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