CN212017991U - A coal-fired pulverizer for thermal power plants - Google Patents

Abstract

The utility model relates to the technical field of pulverizers, in particular to a coal-fired pulverizer for thermal power plants, comprising a pulverizer barrel, a top support plate is fixedly connected to the top of the pulverizer barrel, and the top A motor support frame is fixedly connected to the top of the support plate, a motor is fixedly connected to the top of the motor support frame, and a central connecting column is fixedly connected to the output end of the motor. The coal-fired pulverizer for thermal power plants is provided with a first pulverizing tooth and a second pulverizing tooth. During the pulverizing process, the triangular prism-shaped first pulverizing tooth can rotate small pieces of The coal block is crushed, and the crushing effect is good, which improves the crushing effect of the device. By setting the guide frame, the top of the guide frame is movably connected with a dust cover, which can not only save the coal block, but also help to maintain the external environment. It is clean and hygienic, which is beneficial to the health of the staff and greatly improves the practicability of the device.

Description

A coal-fired pulverizer for thermal power plants

technical field

The utility model relates to the technical field of pulverizers, in particular to a coal-fired pulverizer for thermal power plants.

Background technique

Thermal power generation is a power generation method that utilizes the heat energy generated by the combustion of combustible materials and converts it into electrical energy through a power generation device. China is rich in coal resources. In 1990, it produced 1.09 billion tons of coal, of which coal used for power generation only accounted for 12%. Thermal power generation still has huge potential. Thermal power generation requires coal to provide heat energy. Coal is the most important solid fuel and is a kind of combustible organic rock. It is a lush plant that grows in a certain geological age. In a suitable geological environment, it gradually accumulates into a thick layer and is buried in the bottom of the water or in the sediment. After a long period of time, a large amount of coal has been deposited. With the development of modern coal processing technology, some mechanical equipment is used to grind coal into powder when coal is burned. The pulverizer can increase the contact area between the pulverized coal and the air. If the coal is directly used for combustion, it will lead to insufficient combustion of the coal, waste a lot of energy, cause the accumulation of waste from thermal power plants, and pollute the environment.

The existing coal-fired pulverizer for thermal power plants also has the following disadvantages in the specific use process:

1. In the pulverization process, the coal is generally pulverized by the motor driving the pulverizing roller to rotate at a high speed, and the cylindrical pulverizing roller is generally used. The inertia of the lumps of coal is poor, and the cylindrical crushing roller is not convenient for crushing the small pieces of coal, and the crushing effect is deviated;

2. A large amount of dust is easily generated during the crushing process, which not only wastes resources, but also pollutes the environment and affects the health of surrounding workers.

Utility model content

(1) Technical problems solved

Aiming at the deficiencies of the prior art, the utility model provides a coal-fired pulverizer for thermal power plants. The first and second pulverizing teeth are arranged to improve the pulverizing effect of the device. The top of the guide frame is movably connected with a dust cover, which not only saves coal, but also helps to maintain the cleanliness of the external environment and the health of the staff, which greatly improves the practicability of the device and solves the above problems. Issues raised in the background art.

(2) Technical solutions

In order to achieve the above purpose, the present utility model is achieved through the following technical solutions: a coal-fired pulverizer for thermal power plants, comprising a pulverizer barrel, the top of the pulverizer barrel is fixedly connected with a top support plate, The top of the top support plate is fixedly connected with a motor support frame, the top of the motor support frame is fixedly connected with a motor, the output end of the motor is fixedly connected with a central connecting column, and the outer surface of the central connecting column is fixedly connected with a The first pulverizing tooth, the outer surface of the central connecting column is fixedly connected with the second pulverizing tooth, the inner wall of the pulverizer barrel is fixedly connected with a support frame, and the top of the support frame is fixedly connected with a filter screen, so A feeding port is opened on the top of the top support plate, a material guide frame is fixedly connected to the position of the top support plate close to the feed port, and a dust cover is movably connected to the top of the material guide frame.

Optionally, a reinforcement ring is fixedly connected to the outer surface of the pulverizer barrel, a bottom bracket is provided at the bottom of the pulverizer barrel, and a support leg is fixedly connected to the bottom of the bottom bracket.

Optionally, a discharge port is provided at the bottom of the barrel of the pulverizer, a discharge pipe is fixedly connected to the position of the barrel of the pulverizer close to the discharge port, and the outer surface of the discharge pipe is provided with a cover. body.

Optionally, forward threads are formed on the outer surface of the discharge pipe, reverse threads are formed on the inner wall of the cover body, and the forward threads are adapted to the reverse threads.

Optionally, the shape of the first crushing teeth is a triangular prism.

Optionally, the shape of the second crushing teeth is one of cylindrical type or irregular type.

Optionally, the number of the first crushing teeth and the number of the second crushing teeth is several.

(3) Beneficial effects

The utility model provides a coal-fired pulverizer for thermal power plants, which has the following beneficial effects:

(1) The coal-fired pulverizer for thermal power plants is provided with a first pulverizing tooth and a second pulverizing tooth during use. The shape of the first pulverizing tooth is a triangular prism, and the second pulverizing tooth The shape of the coal is one of cylindrical type or irregular type. During the crushing process, the first crushing teeth of the triangular prism type can crush small pieces of coal under the action of high-speed rotation, and the crushing effect is good, which greatly improves the The crushing effect of the device is easy to use.

(2) The coal-fired pulverizer used in the thermal power plant is provided with a guide frame during use, and the top of the guide frame is movably connected with a dust cover. After the staff puts the coal into the device, the The dust cover is covered and then crushed, which can effectively prevent the coal powder generated in the crushing process from flying around, which not only saves coal, but also helps to maintain a clean and hygienic external environment, which is beneficial to the health of the staff. Practicality of the device.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the central connecting column of the present utility model;

FIG. 3 is a schematic structural diagram of the first crushing tooth of the present invention.

In the picture: 1-mill barrel, 2-top support plate, 3-motor support frame, 4-motor, 5-center connecting column, 6-first grinding tooth, 7-second grinding tooth, 8-support Rack, 9-Filter Screen, 10-Inlet, 11-Guide Rack, 12-Dust Cover, 13-Reinforcement Ring, 14-Bottom Bracket, 15-Support Leg, 16-Outlet, 17- Outlet pipe, 18-cover.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

Please refer to FIG. 1 to FIG. 3 , the present invention provides a technical solution: comprising a pulverizer barrel 1 , a top support plate 2 is fixedly connected to the top of the pulverizer barrel 1 , and a top support plate 2 is fixedly connected to the top of the pulverizer barrel 1 . The motor support frame 3, the top of the motor support frame 3 is fixedly connected with the motor 4, the output end of the motor 4 is fixedly connected with the central connecting column 5, the outer surface of the central connecting column 5 is fixedly connected with the first crushing tooth 6, and the central connecting column 5 The outer surface of the pulverizer is fixedly connected with a second crushing tooth 7, the inner wall of the pulverizer barrel 1 is fixedly connected with a support frame 8, the top of the support frame 8 is fixedly connected with a filter screen 9, and the top of the top support plate 2 is provided with a feeding A guide frame 11 is fixedly connected to the position of the top support plate 2 close to the feed port 10, and a dust cover 12 is movably connected to the top of the guide frame 11.

Optionally, the outer surface of the pulverizer barrel 1 is fixedly connected with a reinforcement ring 13 , the bottom of the pulverizer barrel 1 is provided with a bottom bracket 14 , and the bottom of the bottom bracket 14 is fixedly connected with support legs 15 .

Optionally, the bottom of the mill barrel 1 is provided with a discharge port 16, the position of the mill barrel 1 close to the discharge port 16 is fixedly connected with a discharge pipe 17, and the outer surface of the discharge pipe 17 is provided with a cover. Body 18.

Optionally, the outer surface of the discharge pipe 17 is provided with a forward thread, and the inner wall of the cover body 18 is provided with a reverse thread, and the forward thread is adapted to the reverse thread.

Optionally, the shape of the first crushing teeth 6 is a triangular prism, and the shape of the second crushing teeth 7 is either a cylindrical shape or an irregular shape.

Optionally, the number of the first crushing teeth 6 and the second crushing teeth 7 is several.

During use, by being provided with the first crushing teeth 6 and the second crushing teeth 7, the shape of the first crushing teeth 6 is a triangular prism, and the shape of the second crushing teeth 7 is a cylindrical shape, wherein the first crushing teeth 6 Located above the second pulverizing tooth 7, the first pulverizing tooth 6 rotates rapidly, the three edges of the triangular prism-shaped first pulverizing tooth 6 can pulverize the coal blocks, and the pulverizing effect is good, preventing small pieces of coal. The phenomenon that the block inertia is not enough is not easy to be crushed. Not only that, the cover body 18 is provided on the outer surface of the discharge pipe 17. During the crushing process, the dust generated in the crushing process can be effectively prevented from escaping, which is not only beneficial to the surrounding environment. The environment is hygienic, and the waste of pulverized coal can also be prevented, which greatly improves the practicability of the device. The support frame 8 only plays a supporting role and does not affect the filtering of the filter screen 9.

To sum up, the coal-fired pulverizer for thermal power plants is provided with first crushing teeth 6 and second crushing teeth 7 during use, and the shape of the first crushing teeth 6 is a triangular prism. , the shape of the second pulverizing tooth 7 is either cylindrical or irregular. During the pulverizing process, the triangular prism-shaped first pulverizing tooth 6 can pulverize small pieces of coal under the action of high-speed rotation. The crushing effect is good, which greatly improves the crushing effect of the device and is easy to use; by providing a material guide frame 11, the top of the material guide frame 11 is movably connected with a dust cover 12. The dust cover 12 is covered and then pulverized, which can effectively prevent the pulverized coal generated in the pulverization process from flying around, which not only saves coal, but also helps to maintain a clean and hygienic external environment, which is beneficial to the health of the staff, and greatly improves the Practicality of the device.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (7)

1. A coal-fired pulverizer for thermal power plants, comprising a pulverizer barrel (1), characterized in that: the top of the pulverizer barrel (1) is fixedly connected with a top support plate (2), A motor support frame (3) is fixedly connected to the top of the top support plate (2), a motor (4) is fixedly connected to the top of the motor support frame (3), and an output end of the motor (4) is fixedly connected to a motor (4). A central connecting column (5), the outer surface of the central connecting column (5) is fixedly connected with first crushing teeth (6), and the outer surface of the central connecting column (5) is fixedly connected with second crushing teeth (7) , the inner wall of the pulverizer barrel (1) is fixedly connected with a support frame (8), the top of the support frame (8) is fixedly connected with a filter screen (9), and the top support plate (2) The top is provided with a feeding port (10), a position of the top support plate (2) close to the feeding port (10) is fixedly connected with a material guide frame (11), and the top of the material guide frame (11) is movably connected with a Dust cover (12). 2. A coal-fired pulverizer for a thermal power plant according to claim 1, characterized in that: a reinforcement ring (13) is fixedly connected to the outer surface of the pulverizer barrel (1), and the grinding A bottom bracket (14) is provided at the bottom of the powder machine barrel (1), and a support leg (15) is fixedly connected to the bottom of the bottom bracket (14). 3. A coal-fired pulverizer for a thermal power plant according to claim 1, characterized in that: the bottom of the pulverizer barrel (1) is provided with a discharge port (16), and the pulverizer is provided with a discharge port (16) at the bottom. A discharge pipe (17) is fixedly connected to the position of the machine barrel (1) close to the discharge port (16), and a cover body (18) is provided on the outer surface of the discharge pipe (17). 4. A coal-fired pulverizer for a thermal power plant according to claim 3, characterized in that: the outer surface of the discharge pipe (17) is provided with a forward thread, and the cover body (18) is provided with a forward thread on the outer surface. The inner wall is provided with reverse threads, and the forward threads are matched with the reverse threads. 5 . The coal-fired pulverizer for thermal power plants according to claim 1 , wherein the shape of the first pulverizing teeth ( 6 ) is a triangular prism. 6 . 6 . The coal-fired pulverizer for thermal power plants according to claim 1 , wherein the shape of the second pulverizing teeth ( 7 ) is either cylindrical or irregular. 7 . 7 . The coal-fired pulverizer for thermal power plants according to claim 1 , wherein the number of the first grinding teeth ( 6 ) and the second grinding teeth ( 7 ) is several. 8 .

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