A coal crushing and grinding device

Abstract

This application discloses a coal briquette crushing and grinding device, belonging to the technical field of coal processing equipment, which improves the problem of inconvenience in repeatedly crushing coal briquettes. It includes a grinding shell, with a heat dissipation mechanism fixedly connected to its outer surface, and a grinding mechanism fixedly connected to its inner wall. The grinding mechanism includes a fixed plate fixedly connected to the inner wall of the grinding shell, a grinding disc rotatably connected to the outer surface of the fixed plate, a fixed shaft fixedly connected to the upper surface of the grinding disc, and multiple sets of crushing blades fixedly connected to the outer surface of the fixed shaft. This application, by performing multiple crushing operations on the coal briquettes—with initial crushing by crushing rollers and further refinement by crushing blades—can effectively refine the coal briquettes, ensuring uniform coal powder particle size. Simultaneously, multiple crushing operations increase the flowability of the coal briquettes, preventing accumulation and significantly improving grinding efficiency to meet the needs of large-scale production.

Description

Technical Field

[0001] This utility model relates to the technical field of coal processing equipment, and in particular to a coal crushing and grinding device. Background Technology

[0002] my country has abundant coal reserves, and coal-fired power plants are the main source of electricity in my country. However, in order to ensure the complete combustion of coal, coal blocks are usually crushed into coal powder, and then flame retardants are added to ensure the complete combustion of coal and reduce the emission of harmful gases.

[0003] Chinese utility model patent CN212328556U discloses an integrated coal crushing and grinding device, including a grinding box, a crushing box, and a receiving box. The grinding box contains two relatively rotating crushing rollers and a cooperating fixed grinding disc and rotating grinding disc. A collection hopper is located at the bottom of the grinding box, and a flexible hose is fixedly connected to the bottom of the discharge pipe. The piston rod of a cylinder is fixedly connected to one side of a support, and the other side of the support is also fixedly connected to a flexible hose. The crushing box is a closed structure, with its top connected to a feeding port. Multiple baffles are installed inside the feeding port to effectively prevent coal fragments from flying out and hitting workers during crushing operations, thus avoiding safety accidents. A flexible hose is connected to the bottom of the machine body, extending only into the receiving box to prevent dust generated when coal powder falls into the air. The support on the flexible hose, driven by a cylinder, can move up and down to prevent coal powder from accumulating and clogging the hose, ensuring smooth entry into the receiving box.

[0004] Existing coal crushing and grinding devices rely solely on crushing rollers to crush coal blocks once. When faced with coal blocks that are hard and large in size, it is difficult to process them to a suitable particle size in one crushing. A large amount of large coal blocks that are not fully crushed enter the grinding process, which not only increases the wear of the grinding disc, but also easily leads to low grinding efficiency, a surge in energy consumption, and uneven particle size of the produced coal powder. Therefore, there is a problem that it is not convenient to crush coal blocks multiple times. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a coal crushing and grinding device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a coal crushing and grinding device, comprising a grinding shell, a heat dissipation mechanism fixedly connected to the outer surface of the grinding shell, and a grinding mechanism fixedly connected to the inner wall of the grinding shell. The grinding mechanism includes a fixed plate fixedly connected to the inner wall of the grinding shell, a grinding disc rotatably connected to the outer surface of the fixed plate, a fixed shaft fixedly connected to the upper surface of the grinding disc, multiple sets of crushing blades fixedly connected to the outer surface of the fixed shaft, a reduction motor fixedly connected to the lower surface of the fixed plate, and the output shaft of the reduction motor fixedly connected to the lower surface of the grinding disc. The heat dissipation mechanism includes a ventilation duct disposed on the inner wall of the grinding shell, and a blower and a suction fan fixedly connected to the inner surface of the ventilation duct.

[0009] In a preferred embodiment of the coal crushing and grinding device of the present invention, the grinding mechanism further includes a fixed outer shell fixedly connected to the upper surface of the grinding shell, a crushing device fixedly connected to the upper surface of the fixed outer shell, and a feeding frame fixedly connected to the feed inlet of the crushing device.

[0010] By adopting the above technical solution, the crushing blades inside the fixed shell facilitate further crushing of coal fragments.

[0011] In a preferred embodiment of the coal crushing and grinding device of this utility model, a rotating plate is fixedly connected to the outer surface of the fixed shaft, and the outer surface of the rotating plate is slidably connected to the inner wall of the grinding shell.

[0012] By adopting the above technical solution, the rotating plate facilitates pushing the crushed module to the edge of the grinding disc for grinding.

[0013] In a preferred embodiment of the coal crushing and grinding device of this utility model, the outer surface of the fixed plate is provided with multiple sets of discharge holes, and the inner wall of the grinding shell is slidably connected to a collection bin.

[0014] By adopting the above technical solution, the coal dust can be easily collected through the collection bin.

[0015] In a preferred embodiment of the coal crushing and grinding device of this utility model, a pusher plate is fixedly connected to the outer surface of the grinding disc, and the outer surface of the pusher plate is rotatably connected to the upper surface of the fixed plate.

[0016] By adopting the above technical solution, the pusher plate rotates on the upper surface of the fixed plate, which facilitates pushing the coal powder to the discharge hole.

[0017] In a preferred embodiment of the coal crushing and grinding device of this utility model, the heat dissipation mechanism further includes a control panel fixedly connected to the outer surface of the grinding shell, and a temperature sensor is electrically connected to the outer surface of the control panel via a wire. The temperature sensor is fixedly connected to the inner wall of the ventilation duct.

[0018] By adopting the above technical solution, the temperature sensor can easily detect the temperature inside the ventilation duct. When the temperature is too high, the blower and suction fan are activated, which can increase the air circulation speed inside the ventilation duct and facilitate the heat dissipation of the geared motor.

[0019] (III) Beneficial Effects

[0020] This utility model provides a coal crushing and grinding device. It has the following beneficial effects:

[0021] 1. By performing multiple crushing processes on the coal blocks, with the crushing rollers performing initial crushing and the crushing blades further refining the powder, the coal blocks can be thoroughly refined, ensuring uniform coal powder particle size. At the same time, multiple crushing processes increase the flowability of the coal blocks, prevent accumulation, significantly improve grinding efficiency, and meet the needs of large-scale production.

[0022] 2. The temperature sensor monitors the temperature in real time. When the temperature exceeds the limit, the control panel will activate the blower and suction fan to quickly remove heat and dissipate heat from the motor. This effectively reduces motor failures caused by overheating, extends the service life, ensures stable operation of the device, and reduces equipment maintenance costs and downtime risks. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a front cross-sectional view of the present invention.

[0026] Figure 3 This is a side cross-sectional view of the present invention.

[0027] Figure 4 This is a top-view cross-sectional structural diagram of the present invention.

[0028] In the diagram, 1. Grinding mill housing; 2. Heat dissipation mechanism; 201. Control panel; 202. Blower; 203. Ventilation duct; 204. Suction fan; 205. Temperature sensor; 3. Grinding mechanism; 301. Fixed housing; 302. Crushing device; 303. Feed frame; 304. Gear motor; 305. Fixed plate; 306. Grinding disc; 307. Fixed shaft; 308. Rotating plate; 309. Crushing blade; 310. Collection bin; 311. Discharge hole; 312. Pusher plate. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Example 1

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the first embodiment of the present invention. This embodiment provides a coal crushing and grinding device, including a grinding shell 1. A heat dissipation mechanism 2 is fixedly connected to the outer surface of the grinding shell 1, and a grinding mechanism 3 is fixedly connected to the inner wall of the grinding shell 1. The grinding mechanism 3 includes a fixing plate 305 fixedly connected to the inner wall of the grinding shell 1. A grinding disc 306 is rotatably connected to the outer surface of the fixing plate 305. A fixing shaft 307 is fixedly connected to the upper surface of the grinding disc 306. Multiple sets of crushing blades 309 are fixedly connected to the outer surface of the fixing shaft 307. A reduction motor 304 is fixedly connected to the lower surface of the fixing plate 305. The output shaft of the reduction motor 304 is fixedly connected to the lower surface of the grinding disc 306.

[0032] The specific grinding mechanism 3 also includes a fixed housing 301 fixedly connected to the upper surface of the grinding housing 1. A crushing device 302 is fixedly connected to the upper surface of the fixed housing 301. A feeding frame 303 is fixedly connected to the feed inlet of the crushing device 302. A rotating plate 308 is fixedly connected to the outer surface of the fixed shaft 307. The outer surface of the rotating plate 308 is slidably connected to the inner wall of the grinding housing 1. Multiple sets of discharge holes 311 are opened on the outer surface of the fixed plate 305. A collection bin 310 is slidably connected to the inner wall of the grinding housing 1. A pusher plate is fixedly connected to the outer surface of the grinding disc 306. The outer surface of the pusher plate is rotatably connected to the upper surface of the fixed plate 305.

[0033] Furthermore, by subjecting the coal blocks to multiple crushing processes, with the crushing rollers performing initial crushing and the crushing blades 309 further refining the powder, the coal blocks can be thoroughly refined, ensuring uniform coal powder particle size. At the same time, multiple crushing processes increase the flowability of the coal blocks, preventing accumulation and significantly improving grinding efficiency to meet the needs of large-scale production.

[0034] Example 2

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The heat dissipation mechanism 2 includes a ventilation duct 203 disposed on the inner wall of the grinding shell 1. A blower 202 and a suction fan 204 are fixedly connected to the inner surface of the ventilation duct 203.

[0036] The specific heat dissipation mechanism 2 also includes a control panel 201 fixedly connected to the outer surface of the grinding shell 1. A temperature sensor 205 is electrically connected to the outer surface of the control panel 201 via wires. The temperature sensor 205 is fixedly connected to the inner wall of the ventilation duct 203.

[0037] Furthermore, the temperature sensor 205 monitors the temperature in real time. When the temperature exceeds the limit, the control panel 201 activates the blower 202 and the suction fan 204 to quickly remove heat and dissipate heat from the motor. This effectively reduces motor failures caused by overheating, extends the service life, ensures stable operation of the device, and reduces equipment maintenance costs and downtime risks.

[0038] Working principle: First, coal blocks are fed into the crushing device 302 through the feeding frame 303. The crushing device 302 is then started, and the crushing rollers inside initially crush the coal blocks. Next, the reduction motor 304 is started. The output shaft of the reduction motor 304 drives the grinding disc 306 to rotate. The rotation of the grinding disc 306 drives the fixed shaft 307 to rotate, which in turn drives multiple sets of crushing blades 309 and a rotating plate 308 to rotate. The rotation of the crushing blades 309 facilitates further crushing of the already crushed coal blocks, making the coal finer. Simultaneously, the rotating plate 308 pushes the broken coal blocks towards the edge of the grinding disc 306, and the crushing blades 309 increase the flowability of the coal blocks. The rotation of the grinding disc 306 on the inner wall of the grinding shell 1 facilitates the grinding of the broken coal blocks, causing the coal powder to fall onto the fixed plate 305. On the upper surface, the rotation of the grinding disc 306 drives the pusher plate to rotate, which in turn pushes the coal powder towards the discharge hole 311, causing it to fall into the collection bin 310 for easy collection. The temperature sensor 205 is fixed to the inner wall of the ventilation duct 203 and monitors the temperature inside the duct in real time. When the temperature sensor 205 detects that the temperature inside the ventilation duct 203 is too high, it transmits a signal to the control panel 201. After receiving the signal, the control panel 201 controls the start of the blower 202 and the suction fan 204 via wires. The blower 202 and the suction fan 204 work to increase the airflow speed inside the ventilation duct 203, quickly removing the heat generated by the grinding device, thereby dissipating heat from the geared motor 304 and other heat-generating components in the grinding device and ensuring stable operation of the equipment.

[0039] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A coal crushing and grinding device, comprising a grinding shell (1), characterized in that: The outer surface of the grinding shell (1) is fixedly connected to a heat dissipation mechanism (2), and the inner wall of the grinding shell (1) is fixedly connected to a grinding mechanism (3). The grinding mechanism (3) includes a fixed plate (305) fixedly connected to the inner wall of the grinding shell (1). A grinding disc (306) is rotatably connected to the outer surface of the fixed plate (305). A fixed shaft (307) is fixedly connected to the upper surface of the grinding disc (306). Multiple sets of crushing blades (309) are fixedly connected to the outer surface of the fixed shaft (307). A reduction motor (304) is fixedly connected to the lower surface of the fixed plate (305). The output shaft of the reduction motor (304) is fixedly connected to the lower surface of the grinding disc (306). The heat dissipation mechanism (2) includes a ventilation duct (203) disposed on the inner wall of the grinding shell (1), and a blower (202) and a suction fan (204) are fixedly connected to the inner surface of the ventilation duct (203).

2. A coal briquette crushing and pulverizing device according to claim 1, characterized in that: The grinding mechanism (3) further includes a fixed housing (301) fixedly connected to the upper surface of the grinding housing (1), and a crushing device (302) is fixedly connected to the upper surface of the fixed housing (301), and a feeding frame (303) is fixedly connected to the feed inlet of the crushing device (302).

3. A coal briquette crushing and pulverizing device according to claim 2, characterized in that: A rotating plate (308) is fixedly connected to the outer surface of the fixed shaft (307), and the outer surface of the rotating plate (308) is slidably connected to the inner wall of the grinding shell (1).

4. A coal briquette crushing and pulverizing device according to claim 3, characterized in that: The outer surface of the fixed plate (305) is provided with multiple sets of discharge holes (311), and the inner wall of the grinding shell (1) is slidably connected with a collection bin (310).

5. A coal briquette crushing and pulverizing device according to claim 4, characterized in that: A pusher plate is fixedly connected to the outer surface of the grinding disc (306), and the outer surface of the pusher plate is rotatably connected to the upper surface of the fixed plate (305).

6. A coal briquette crushing and pulverizing device according to claim 1, characterized in that: The heat dissipation mechanism (2) also includes a control panel (201) fixedly connected to the outer surface of the grinding shell (1). The outer surface of the control panel (201) is electrically connected to a temperature sensor (205) via a wire. The temperature sensor (205) is fixedly connected to the inner wall of the ventilation duct (203).

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