Coal milling equipment for thermal power generation

Abstract

The utility model discloses coal milling equipment for thermal power generation, and relates to the technical field of thermal power generation. The device comprises a processing box and a feeding frame, a feeding port and a discharging port are formed in the top and the bottom of the processing box respectively, the bottom of the feeding frame is fixed to the top of the processing box, the feeding frame is located above the feeding port, a rapid discharging type pre-smashing assembly is installed in the feeding frame, and a fixing frame is fixed to the front side of the processing box; and the rapid discharging type pre-crushing assembly is fixedly mounted on one side in the fixing frame, and an anti-blocking type coal grinding assembly is fixedly mounted at the top of the processing box. By means of the rapid discharging type pre-smashing assembly, pulverized coal needed by thermal power generation can be pretreated and smashed, the pulverized coal can be rapidly discharged, a discharging port is prevented from being blocked, meanwhile, coal briquettes can be ground and screened by means of the anti-blocking coal grinding assembly, a grinding plate can be cleaned, and therefore the coal pulverizing efficiency is improved. And the risk of blockage of the grinding plate is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of thermal power generation, specifically, it relates to a coal grinding device for thermal power generation. Background Technology

[0002] Thermal power generation is a method of generating electricity by converting the heat energy produced when combustible materials such as coal, oil, and natural gas are burned into electrical energy through a series of equipment and technologies. Thermal power generation requires the use of coal milling equipment to crush the coal, which helps to improve the combustion efficiency of the coal.

[0003] Chinese patent application CN202121939111.0 discloses an automatic feeding coal mill for thermal power plants, comprising a main body with a feed inlet on one side of the top. A crushing mechanism is located inside the feed inlet, and a grinding mechanism is located inside the main body. The crushing and grinding mechanisms are rotatably connected by a drive mechanism. A screening mechanism is also inclined inside the main body, located below the grinding mechanism. A discharge inlet is located at the bottom of the main body, and a through groove is formed at the bottom of the main body near the screening mechanism. A lifting mechanism is located on one side of the through groove, and a conveying mechanism matches the feed inlet. This invention effectively avoids the problem of excessively large coal particles by processing the coal multiple times and further crushing excessively large particles, preventing potential blockage of the discharge inlet during prolonged use and ensuring normal operation of the equipment.

[0004] However, the aforementioned existing technology cannot quickly feed pulverized coal, resulting in poor coal grinding efficiency. At the same time, it cannot clean the grinding plates, which are prone to clogging during use.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a coal grinding equipment for thermal power generation.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A coal pulverizing device for thermal power generation includes a processing box and a feeding rack. The processing box has an inlet and an outlet at its top and bottom, respectively. The bottom of the feeding rack is fixed to the top of the processing box, and the feeding rack is located above the inlet. A rapid-feeding pre-crushing component is installed inside the feeding rack. A fixing frame is fixed to the front of the processing box, and the rapid-feeding pre-crushing component is fixedly installed inside one side of the fixing frame. A vibration motor is installed at the bottom of the processing box, and an anti-clogging coal pulverizing component is fixedly installed at the top of the processing box. A triangular truncated pyramid is fixed to the inner wall of the bottom of the processing box.

[0009] Optionally, the rapid feeding pre-crushing assembly includes a first rotating motor and a conveyor shaft. The first rotating motor is fixedly installed inside one side of the fixed frame, and one of the conveyor shafts is installed at the output end of the first rotating motor. A fixing plate is fixed inside one side of the processing box.

[0010] Optionally, one of the conveying shafts is rotatably mounted at one end on one side of the fixed plate, and the other conveying shaft is rotatably mounted at both ends on the two fixed plates respectively.

[0011] Optionally, a conveyor belt is meshed on the outer side of the two conveyor shafts, and a synchronous pulley is fixed on the outer side of one of the conveyor shafts. Two mounting shafts are rotatably installed inside the rear side of the feed rack, and the synchronous pulley is fixedly installed on one end of one of the mounting shafts.

[0012] Optionally, a timing belt is meshed on the outer sides of the two timing pulleys, and gears and crushing rollers are fixedly mounted on the outer sides of the two mounting shafts. The two gears are meshed, and the two crushing rollers are located inside the feed rack.

[0013] Optionally, the anti-clogging coal grinding assembly includes a second rotating motor and a rotating shaft. The second rotating motor is fixedly installed on the top of the processing box, and the top of the rotating shaft is installed at the output end of the second rotating motor.

[0014] Optionally, the rotating shaft is located inside the processing box, and a connecting shaft and a cleaning brush are fixedly installed on the outside of the rotating shaft, while a coal grinding roller is fixedly installed on the outside of the connecting shaft.

[0015] Optionally, a grinding plate is installed inside the processing box, the coal grinding roller is located above the grinding plate, and the cleaning brush is located below the grinding plate.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] This invention utilizes a rapid-feeding pre-crushing component, which not only pre-processes and crushes the coal powder required for thermal power generation, helping to extend the service life of coal milling equipment and reduce maintenance costs and repair frequency, but also enables rapid feeding of coal powder, preventing blockage at the discharge port. Simultaneously, the anti-clogging coal milling component can grind and screen coal blocks, improving the grinding effect, and can clean the grinding plates, reducing the risk of grinding plate blockage.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional view of the rapid feeding pre-crushing component according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the anti-clogging coal mill assembly structure according to an embodiment of the present invention;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Processing box; 2. Feeding rack; 3. Fast-discharge pre-crushing assembly; 301. First rotating motor; 302. Conveyor shaft; 303. Synchronous pulley; 304. Fixing plate; 305. Conveyor belt; 306. Synchronous belt; 307. Mounting shaft; 308. Gear; 309. Crushing roller; 4. Fixing frame; 5. Vibration motor; 6. Anti-clogging coal grinding assembly; 601. Second rotating motor; 602. Rotating shaft; 603. Connecting shaft; 604. Coal grinding roller; 605. Grinding plate; 606. Cleaning brush; 7. Triangular table.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Please see Figure 1-4As shown, this embodiment provides a coal milling device for thermal power generation, including a processing box 1 and a feeding rack 2. The processing box 1 has a feeding port and a discharging port at the top and bottom, respectively. The bottom of the feeding rack 2 is fixed to the top of the processing box 1, and the feeding rack 2 is located above the feeding port. A fast-feeding pre-crushing component 3 is installed inside the feeding rack 2. A fixing frame 4 is fixed to the front side of the processing box 1. The fixing frame 4 has a fixing effect on the fast-feeding pre-crushing component 3, which improves the stability of the fast-feeding pre-crushing component 3 during operation. The fast-feeding pre-crushing component 3 is fixedly installed inside one side of the fixing frame 4. A vibration motor 5 is installed at the bottom of the processing box 1, which can drive the coal milling device to vibrate, which not only speeds up the feeding and discharging rate, but also reduces the risk of clogging of the anti-clogging coal milling component 6. The anti-clogging coal milling component 6 is fixedly installed at the top of the processing box 1, and a triangular platform 7 is fixed to the inner wall of the bottom of the processing box 1 to facilitate the feeding of coal powder.

[0029] One application of this embodiment is as follows: the vibration motor 5, the rapid feeding pre-crushing component 3, and the anti-clogging coal grinding component 6 are controlled manually using an external controller. The coal to be crushed is then poured into the feed rack 2. The rapid feeding pre-crushing component 3 can pre-crush larger volumes of coal, facilitating subsequent coal grinding. The pre-crushed coal falls to the top of the anti-clogging coal grinding component 6 under its own gravity. The anti-clogging coal grinding component 6 can then grind the coal. The ground coal powder can flow out through the discharge port. The rapid feeding pre-crushing component 3 and the triangular table 7 accelerate the discharge efficiency of the coal powder and prevent coal powder from clogging at the discharge port.

[0030] The rapid feeding pre-crushing component 3 includes a first rotating motor 301 and a conveying shaft 302. The first rotating motor 301 is fixedly installed inside one side of the fixed frame 4. One of the conveying shafts 302 is installed at the output end of the first rotating motor 301. A fixed plate 304 is fixed inside one side of the processing box 1. The other end of one of the conveying shafts 302 is rotatably installed on one side of the fixed plate 304. The fixed plate 304 can install the conveying shaft 302. The two ends of the other conveying shaft 302 are rotatably installed on the two fixed plates 304 respectively.

[0031] Two conveyor shafts 302 are fitted with a conveyor belt 305 on their outer sides. A synchronous pulley 303 is fixed to the outer side of one of the conveyor shafts 302. Two mounting shafts 307 are rotatably mounted inside the rear side of the feed frame 2. A synchronous pulley 303 is fixedly mounted at one end of one of the mounting shafts 307. A synchronous belt 306 is fitted with the outer sides of the two synchronous pulleys 303. Gears 308 and crushing rollers 309 are fixedly mounted on the outer sides of both mounting shafts 307. The two gears 308 are fitted with each other. The two crushing rollers 309 are located inside the feed frame 2, which facilitates the pre-crushing of coal and improves the efficiency of subsequent coal grinding.

[0032] In this embodiment, when the first rotating motor 301 is in use, it can drive one of the conveyor shafts 302 to rotate. Both conveyor shafts 302 are provided with teeth on their outer sides and the inner side of the conveyor belt 305, so that the two conveyor shafts 302 can mesh with the conveyor belt 305. Under the action of the conveyor belt 305, the two conveyor shafts 302 can be driven to rotate simultaneously, thereby driving the conveyor belt 305 to continuously convey, which facilitates the feeding of the ground coal powder.

[0033] Meanwhile, one of the synchronous pulleys 303 can rotate with one of the transmission shafts 302. Teeth are also provided on the outer side of the two synchronous pulleys 303 and the inner side of the synchronous belt 306, so that the two synchronous pulleys 303 can also rotate simultaneously under the action of the synchronous belt 306. The mounting shaft 307 is fixed inside the other synchronous pulley 303 and can rotate with the rotation of the synchronous pulley 303, thereby driving the gear 308 and the crushing roller 309 to rotate. The two gears 308 are meshed. Under the action of the gears 308, the other mounting shaft 307 and the crushing roller 309 can also rotate. The two crushing rollers 309 can pre-crush and crush large-volume coal, which is convenient for subsequent coal grinding processing.

[0034] The anti-clogging coal grinding assembly 6 includes a second rotating motor 601 and a rotating shaft 602. The second rotating motor 601 is fixedly installed on the top of the processing box 1. The top of the rotating shaft 602 is installed at the output end of the second rotating motor 601. The rotating shaft 602 is located inside the processing box 1. A connecting shaft 603 and a cleaning brush 606 are fixedly installed on the outside of the rotating shaft 602. A coal grinding roller 604 is fixedly installed on the outside of the connecting shaft 603. A grinding plate 605 is installed inside the processing box 1. The grinding plate 605 can not only grind coal blocks, but also has screening holes to facilitate the screening of coal powder. The coal grinding roller 604 is located above the grinding plate 605, and the cleaning brush 606 is located below the grinding plate 605.

[0035] In this embodiment, the second rotating motor 601 drives the rotating shaft 602 to rotate. The connecting shaft 603 and the cleaning brush 606 can rotate with the rotating shaft 602. The coal grinding roller 604 on the outside of the connecting shaft 603 can rotate with the rotating shaft 603. The coal grinding roller 604 works in conjunction with the grinding plate 605 to grind the coal into powder, which is convenient for subsequent use in thermal power generation. The top of the cleaning brush 606 contacts the bottom of the grinding plate 605, so that the cleaning brush 606 can clean the grinding plate 605 and reduce the risk of clogging of the grinding plate 605.

[0036] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A coal pulverizing apparatus for thermal power generation, characterized by comprising: include: The processing box (1) and the feeding rack (2) are provided with a feeding port and a discharging port at the top and bottom of the processing box (1), respectively. The bottom of the feeding rack (2) is fixed to the top of the processing box (1). The feeding rack (2) is located above the feeding port. A fast feeding pre-crushing component (3) is installed inside the feeding rack (2). A fixing frame (4) is fixed to the front side of the processing box (1). The fast feeding pre-crushing component (3) is fixedly installed inside the fixing frame (4). A vibration motor (5) is installed at the bottom of the processing box (1). An anti-clogging coal grinding component (6) is fixedly installed at the top of the processing box (1). A triangular platform (7) is fixed to the inner wall of the bottom of the processing box (1).

2. The coal pulverizing apparatus for thermal power generation according to claim 1, wherein The rapid feeding pre-crushing component (3) includes a first rotating motor (301) and a conveyor shaft (302). The first rotating motor (301) is fixedly installed inside one side of the fixed frame (4), and one of the conveyor shafts (302) is installed at the output end of the first rotating motor (301). A fixed plate (304) is fixed inside one side of the processing box (1).

3. The coal pulverizing apparatus for thermal power generation according to claim 2, wherein One of the transmission shafts (302) is rotatably mounted on one side of the fixed plate (304) at one end, and the other transmission shaft (302) is rotatably mounted on the two fixed plates (304) at both ends respectively.

4. The coal pulverizing apparatus for thermal power generation according to claim 3, wherein Two conveyor shafts (302) are meshed with a conveyor belt (305) on their outer sides. A synchronous pulley (303) is fixed on the outer side of one of the conveyor shafts (302). Two mounting shafts (307) are rotatably installed inside the rear side of the feed rack (2). One end of one of the mounting shafts (307) is fixedly installed with the synchronous pulley (303).

5. A coal pulverizing apparatus for thermal power generation according to claim 4, wherein A timing belt (306) is meshed on the outer side of the two timing pulleys (303), and a gear (308) and a crushing roller (309) are fixedly installed on the outer side of the two mounting shafts (307). The two gears (308) are meshed, and the two crushing rollers (309) are located inside the feed rack (2).

6. The coal pulverizing apparatus for thermal power generation according to claim 1, wherein The anti-clogging coal grinding assembly (6) includes a second rotating motor (601) and a rotating shaft (602). The second rotating motor (601) is fixedly installed on the top of the processing box (1), and the top of the rotating shaft (602) is installed at the output end of the second rotating motor (601).

7. A coal pulverizing apparatus for thermal power generation according to claim 6, wherein The rotating shaft (602) is located inside the processing box (1). A connecting shaft (603) and a cleaning brush (606) are fixedly installed on the outside of the rotating shaft (602). A coal grinding roller (604) is fixedly installed on the outside of the connecting shaft (603).

8. The coal pulverizing apparatus for thermal power generation according to claim 7, wherein The processing box (1) is equipped with a grinding plate (605), the coal grinding roller (604) is located above the grinding plate (605), and the cleaning brush (606) is located below the grinding plate (605).

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