Coal crusher for thermal power plant

Abstract

The utility model discloses a coal crusher for a thermal power plant, which comprises a main box body, two baffles in bilateral symmetry are arranged in the main box body, a crushing wheel is arranged on the lower side of each baffle, a rotating shaft is fixed in each crushing wheel, guide seats are fixed on the front end face and the rear end face of the main box body, and a sliding block is arranged in each guide seat. A telescopic rod is fixed to the end face of the outer side of each sliding block, and one end of the outer side of each telescopic rod is in power connection with a hydraulic cylinder. Coal briquettes are stacked between the two grinding wheels through the two baffles, large coal briquettes are ground into small coal briquettes to facilitate sufficient combustion during thermal power generation under the relative rotation and grinding of the two grinding wheels, meanwhile, the distance between the two grinding wheels can be adjusted under stretching and retracting of the hydraulic cylinder, and the coal briquettes can be conveniently combusted. Therefore, the distance between the pulverizing wheels can be adjusted according to the size of coal briquettes required by thermal power generation, and the pulverized size of the coal briquettes is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generation, in particular to a coal crusher for a thermal power plant. Background Art

[0002] A power generation method that uses the heat energy generated by the combustion of combustibles and converts it into electrical energy through a power generation device. During thermal power generation, if the coal block is too large, it cannot be fully burned, resulting in low thermal power generation efficiency and a certain waste of resources. If the coal block is too small, it is easy to burn too quickly. If there is too much coal powder, it is easy to cause deflagration, which poses a certain safety hazard. Therefore, the size of the coal block determines the effect of thermal power generation. Utility Model Content

[0003] The purpose of the utility model is to provide a coal crusher for a thermal power plant, which is used to overcome the above-mentioned defects in the prior art.

[0004] According to the utility model, a coal crusher for a thermal power plant comprises a main box body, wherein two left-right symmetrical baffles are arranged in the main box body, a crushing wheel is arranged on the lower side of each baffle, a rotating shaft is fixed in each crushing wheel, guide seats are fixed on both front and rear end surfaces of the main box body, a sliding block is arranged in each guide seat, a telescopic rod is fixed on the outer end surface of each sliding block, and a hydraulic cylinder is dynamically connected to one outer end of each telescopic rod.

[0005] Preferably, a discharge port is fixedly provided at the lower end of the main box body, a crushing chamber which passes through from top to bottom is provided in the main box body, the baffle is fixed on the inner wall of the crushing chamber, and the two baffles are inclined downward from outside to inside.

[0006] Preferably, the front and rear sides of the crushing chamber are connected with left-right symmetrical through grooves, each guide seat is provided with a guide groove, the through groove on the rear side penetrates the guide seat on the rear side, the four sliders are respectively rotatably installed on the outer peripheries of the two rotating shafts, and the four sliders are respectively slidably matched with the four guide grooves.

[0007] Preferably, the two hydraulic cylinders on the front side are respectively fixed on the outer end surfaces of the two guide seats on the front side, an outer shell is fixed on the rear end surface of the main box body, and the two hydraulic cylinders on the rear side are respectively fixed on the left and right end surfaces of the outer shell, and the four telescopic rods respectively penetrate the guide seats on the corresponding sides and slide with the guide seats on the corresponding sides.

[0008] Preferably, a cavity is provided in the shell, and two motor seats are slidably fitted in the cavity, a motor is fixed in each of the motor seats, and the rear ends of the two rotating shafts are respectively connected to the front ends of the two motors.

[0009] The beneficial effect of the utility model is that the utility model accumulates the coal blocks between the two crushing wheels through the two baffles, and the large coal blocks are crushed into small coal blocks under the relative rotation and crushing of the two crushing wheels, so as to facilitate full combustion during thermal power generation; at the same time, the distance between the two crushing wheels can be adjusted by the extension and contraction of the hydraulic cylinder, so that the distance between the crushing wheels can be adjusted according to the size of the coal blocks required for thermal power generation, thereby adjusting the size of the crushed coal blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0011] Figure 2 This utility model Figure 1 Schematic diagram of AA in the middle;

[0012] Figure 3 This utility model Figure 1 Schematic diagram of the middle BB;

[0013] Figure 4 This utility model Figure 3 A partial enlarged schematic diagram of the motor components.

[0014] In the figure:

[0015] 10. Main box; 11. Baffle; 12. Crushing wheel; 13. Crushing chamber; 14. Shell; 15. Hydraulic cylinder; 16. Discharge port; 18. Guide seat; 20. Rotating shaft; 21. Motor; 22. Motor seat; 23. Cavity; 24. Slider; 25. Through slot; 26. Guide slot; 27. Telescopic rod. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of simplifying the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in conjunction with the embodiments below. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model. As used in this article, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human errors. The specific features of the coal crusher for a thermal power plant are described in detail below:

[0018] Reference Figure 1-Figure 4 According to an embodiment of the utility model, a coal crusher for a thermal power plant includes a main box body 10, two left-right symmetrical baffles 11 are arranged in the main box body 10, a crushing wheel 12 is arranged on the lower side of each baffle 11, a rotating shaft 20 is fixed in each crushing wheel 12, guide seats 18 are fixed on both front and rear end surfaces of the main box body 10, a slider 24 is arranged in each guide seat 18, a telescopic rod 27 is fixed on the outer end surface of each slider 24, and a hydraulic cylinder 15 is dynamically connected to one end of the outer side of each telescopic rod 27.

[0019] A discharge port 16 is fixedly provided at the lower end of the main box body 10 , and a crushing chamber 13 which passes through from top to bottom is provided in the main box body 10 . A baffle 11 is fixed on the inner wall of the crushing chamber 13 . The two baffles 11 are inclined downward from outside to inside, so that the fly ash entering the crushing chamber 13 will accumulate on the crushing wheel 12 .

[0020] The front and rear sides of the crushing chamber 13 are connected with left-right symmetrical through grooves 25, and each guide seat 18 is provided with a guide groove 26. The rear through groove 25 penetrates the rear guide seat 18, and four sliders 24 are rotatably installed on the outer periphery of the two rotating shafts 20 respectively. The four sliders 24 are slidably matched with the four guide grooves 26 respectively. The sliding of the slider 24 can adjust the distance between the two crushing wheels 12, thereby adjusting the size of the crushed coal blocks.

[0021] The two hydraulic cylinders 15 on the front side are respectively fixed on the outer end surfaces of the two guide seats 18 on the front side, and the shell 14 is fixed on the rear end surface of the main box body 10. The two hydraulic cylinders 15 on the rear side are respectively fixed on the left and right end surfaces of the shell 14. The four telescopic rods 27 respectively penetrate the guide seats 18 on the corresponding sides and slide with the guide seats 18 on the corresponding sides. The extension and retraction of the telescopic rods 27 can drive the slider 24 on the corresponding side to slide.

[0022] A cavity 23 is provided in the housing 14 , and two motor seats 22 are slidably fitted in the cavity 23 . A motor 21 is fixed in each motor seat 22 , and the rear ends of the two rotating shafts 20 are respectively connected to the front ends of the two motors 21 .

[0023] When used specifically:

[0024] The large coal lumps are poured into the crushing chamber 13 , and under the action of the two baffles 11 , the coal lumps are accumulated toward the crushing wheel 12 .

[0025] At this time, the two motors 21 are started, so that the two rotating shafts 20 rotate relative to each other, thereby driving the two crushing wheels 12 to rotate relative to each other, thereby crushing the coal blocks, thereby crushing the large coal blocks into small coal blocks.

[0026] If the size of the coal block after crushing needs to be adjusted, the four hydraulic cylinders 15 are started to shorten the telescopic rods 27 on the corresponding sides, thereby driving the sliders 24 on the left and right sides away from each other, and then driving the two crushing wheels 12 away from each other, thereby adjusting the distance between the two crushing wheels 12, thereby adjusting the size of the coal block after crushing.

[0027] It is clear to those skilled in the art that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A coal crusher for a thermal power plant, comprising a main housing (10), characterized in that: Two left-right symmetrical baffles (11) are arranged in the main housing (10), a crushing wheel (12) is arranged on the lower side of each baffle (11), a rotating shaft (20) is fixed in each crushing wheel (12), guide seats (18) are fixed on both front and rear end surfaces of the main housing (10), a sliding block (24) is arranged in each guide seat (18), a telescopic rod (27) is fixed on the outer end surface of each sliding block (24), and a hydraulic cylinder (15) is dynamically connected to one outer end of each telescopic rod (27).

2. A coal crusher for a thermal power plant according to claim 1, characterized in that: A discharge port (16) is fixedly provided at the lower end of the main box body (10), a crushing chamber (13) penetrating from top to bottom is provided in the main box body (10), the baffle plates (11) are fixed on the inner wall of the crushing chamber (13), and the two baffle plates (11) are inclined downward from the outside to the inside.

3. A coal crusher for a thermal power plant according to claim 2, characterized in that: The front and rear sides of the crushing chamber (13) are both connected to each other with left-right symmetrical through grooves (25), each of the guide seats (18) is provided with a guide groove (26), the through groove (25) on the rear side penetrates the guide seat (18) on the rear side, the four sliding blocks (24) are respectively rotatably mounted on the outer peripheries of the two rotating shafts (20), and the four sliding blocks (24) are respectively slidably matched with the four guide grooves (26).

4. A coal crusher for a thermal power plant according to claim 2, characterized in that: The two hydraulic cylinders (15) on the front side are respectively fixed to the outer end surfaces of the two guide seats (18) on the front side, a shell (14) is fixed to the rear end surface of the main box body (10), and the two hydraulic cylinders (15) on the rear side are respectively fixed to the left and right end surfaces of the shell (14), and the four telescopic rods (27) respectively penetrate the guide seats (18) on the corresponding sides and are slidably matched with the guide seats (18) on the corresponding sides.

5. A coal crusher for a thermal power plant according to claim 4, characterized in that: A cavity (23) is provided in the housing (14), and two motor seats (22) are slidably fitted in the cavity (23). A motor (21) is fixed in each of the motor seats (22), and rear ends of the two rotating shafts (20) are respectively connected to front ends of the two motors (21) by power.

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