Coal mill with dust falling function for thermal power generation

Abstract

The coal mill with the dust falling function for thermal power generation comprises supporting frames and a barrel, the barrel is connected between the supporting frames, grinding balls are movably connected in the barrel, one side of the barrel is connected with a feeding port, the other side, away from the feeding port, of the barrel is connected with a discharging port, and the discharging port is connected with a dust falling device. According to the coal mill with the dust falling function for thermal power generation, water mist sprayed by a dust falling spraying head can conduct dust falling on the periphery, when the dust falling angle needs to be adjusted, the dust falling mechanism is connected between the supporting frame and the discharging port, and the filtering mechanism is connected to the top of the barrel. A motor can be started to drive a water pipe to rotate so as to drive a dust falling spray head to spray at all angles, when the end of a threaded rod completely slides into a threaded groove, a filter screen can be fixed, ground coal mines can be screened after the filter screen is fixed, and qualified coal powder can be discharged through a discharging port; and the ground coal powder can be conveniently filtered by using a filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generation, in particular to a coal mill for thermal power generation with a dust reduction function. Background Art

[0002] Thermal power generation generally refers to the use of heat energy generated by the combustion of combustibles to heat water, turning the water into high-temperature, high-pressure steam, and then using the steam to drive the generator to generate electricity. Power plants that use combustibles as fuel are collectively called thermal power plants. The main equipment systems of thermal power plants include: fuel supply system, water supply system, steam system, cooling system, electrical system and some other auxiliary processing equipment. Most thermal power plants use coal as the primary energy source, and transport treated pulverized coal to the boiler. The combustion of pulverized coal heats the boiler and turns the water in the boiler into steam. After one heating, the steam enters the high-pressure cylinder. In order to improve thermal efficiency, a coal mill is needed to crush and grind the coal. Existing coal mills still have certain defects when used, such as;

[0003] A coal mill is a machine that breaks up coal blocks and grinds them into coal powder. It is an important auxiliary equipment for pulverized coal furnaces. There are many types of coal mills, which are mainly divided into low-speed coal mills, medium-speed coal mills and high-speed coal mills according to the rotational speed. It plays an important role in actual production. After the coal blocks are ground into coal powder, the coal powder will be discharged through the discharge port of the coal mill and then fall for collection. In the process of coal powder falling, it is easy to drift into the surrounding air, thereby affecting the surrounding environment and causing a waste of coal resources. If the residual coal powder in the air is inhaled by the staff, it will cause damage to their health. Therefore, we have made improvements to this and proposed a coal mill for thermal power generation with dust reduction function. Utility Model Content

[0004] The utility model provides the following technical solution: The purpose of the utility model is to provide a coal mill for thermal power generation with a dust reduction function, so as to solve the problem that the coal mills currently on the market have many defects when in use, the coal mills do not have a dust reduction function, and it is inconvenient to filter the ground coal powder.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A coal mill for thermal power generation with dust reduction function, comprising: a support frame and a cylinder;

[0006] A cylinder is connected between the support frames, grinding balls are movably connected inside the cylinder, a feed port is connected to one side of the cylinder, a discharge port is connected to the other side of the cylinder away from the feed port, a dust reduction mechanism is connected between the support frame and the discharge port, and a filtering mechanism is connected to the top of the cylinder.

[0007] Preferably, the dust reduction mechanism comprises a water tank, a water inlet, a water pump, a fixing block, a motor, a water pipe, a dust reduction spray head and a hose;

[0008] The top of the support frame is connected with a water tank.

[0009] Preferably, the top of the water tank is connected to a water inlet, and the top of the water tank is connected to a water pump.

[0010] Preferably, a fixing block is connected to the side of the discharge port, and a motor is connected to the side of the fixing block;

[0011] A water pipe is connected between the motor and the fixing block.

[0012] Preferably, a hose is connected between the water pipe and the water pump, and a dust suppression spray head is connected to the surface of the water pipe.

[0013] Preferably, the filtering mechanism comprises a slide groove, a filter screen, a thread groove, a sliding groove and a threaded rod;

[0014] A slide groove is provided on the top of the cylinder.

[0015] Preferably, a filter screen is slidably connected inside the slide groove, and a sliding groove is provided through the top of the filter screen.

[0016] Preferably, a threaded rod is threadedly connected inside the sliding groove, and a threaded groove is formed on the top of the cylinder.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the coal mill for thermal power generation with dust reduction function, the water mist sprayed by the dust reduction spray head can reduce dust in the surrounding area, when the dust reduction angle needs to be adjusted, the motor can be started to drive the water pipe to rotate, thereby driving the dust reduction spray head to spray at various angles, and when the end of the threaded rod completely slides into the threaded groove, the filter screen can be fixed. After the filter screen is fixed, the ground coal can be screened, and qualified coal powder can be discharged through the discharge port, so that the ground coal powder can be filtered using the filter screen.

[0018] 1. After the coal is ground into powder by the coal mill, it can be discharged through the discharge port. In the process of coal powder falling, it is easy to drift into the surrounding air, thus affecting the surrounding environment. At this time, the water pump can be started. The water pump can extract water from the water tank. The water pumped by the water pump flows into the water pipe through the hose. When the water pipe is full of water, the dust suppression spray head can be used for spraying. The water mist sprayed by the dust suppression spray head can reduce dust around. When the dust reduction angle needs to be adjusted, the motor can be started to drive the water pipe to rotate, thereby driving the dust suppression spray head to spray at various angles, which is convenient for dust reduction when the coal mill is used;

[0019] 2. Before using the coal mill, you can pull the filter to slide inside the slide groove. When the filter slides completely into the slide groove, the slide groove can be driven to dock with the threaded groove. At this time, you can rotate the threaded rod. The threaded rod can slide inside the sliding groove. When the end of the threaded rod slides out of the sliding groove, the threaded sliding can be performed inside the threaded groove. When the end of the threaded rod slides completely into the threaded groove, the filter can be fixed. After the filter is fixed, the ground coal can be screened, and qualified coal powder can be discharged through the discharge port, which is convenient for using the filter to filter the ground coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0023] Figure 4 This is an enlarged structural diagram of part A of the utility model;

[0024] Figure 5 It is a schematic diagram of the enlarged structure of part B of the utility model.

[0025] In the figure: 1. support frame; 2. cylinder; 3. grinding balls; 4. feed port; 5. discharge port; 6. dust suppression mechanism; 601. water tank; 602. water inlet; 603. water pump; 604. fixing block; 605. motor; 606. water pipe; 607. dust suppression spray head; 608. hose; 7. filtering mechanism; 701. slide groove; 702. filter screen; 703. threaded groove; 704. slide groove; 705. threaded rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 , the utility model provides a technical solution: a coal mill for thermal power generation with dust reduction function, comprising: a support frame 1 and a cylinder 2;

[0028] A cylinder 2 is connected between the support frames 1, a grinding ball 3 is movably connected inside the cylinder 2, a feed port 4 is connected to one side of the cylinder 2, a discharge port 5 is connected to the other side of the cylinder 2 away from the feed port 4, a dust reduction mechanism 6 is connected between the support frame 1 and the discharge port 5, and a filtering mechanism 7 is connected to the top of the cylinder 2.

[0029] The dust reduction mechanism 6 includes a water tank 601, a water inlet 602, a water pump 603, a fixed block 604, a motor 605, a water pipe 606, a dust reduction spray head 607 and a hose 608. The top of the support frame 1 is connected to the water tank 601. When the coal is ground into powder by the coal mill, it can be discharged through the discharge port 5. In the process of coal powder falling, it is easy to drift into the surrounding air, thereby affecting the surrounding environment.

[0030] The top of the water tank 601 is connected with a water inlet 602 , and the top of the water tank 601 is connected with a water pump 603 . At this time, the water pump 603 can be started, and the water pump 603 can be operated to extract water from the water tank 601 .

[0031] A fixed block 604 is connected to the side of the discharge port 5, a motor 605 is connected to the side of the fixed block 604, a water pipe 606 is connected between the motor 605 and the fixed block 604, and the water pumped by the water pump 603 flows into the water pipe 606 through the hose 608. When the water pipe 606 is full of water, a dust suppression spray head 607 can be used for spraying.

[0032] A hose 608 is connected between the water pipe 606 and the water pump 603. A dust reduction spray head 607 is connected to the surface of the water pipe 606. The water mist sprayed by the dust reduction spray head 607 can reduce dust in the surrounding area. When the dust reduction angle needs to be adjusted, the motor 605 can be started to drive the water pipe 606 to rotate, thereby driving the dust reduction spray head 607 to spray at various angles.

[0033] The filter mechanism 7 includes a slide groove 701, a filter screen 702, a threaded groove 703, a sliding groove 704 and a threaded rod 705. The slide groove 701 is opened on the top of the cylinder 2. Before using the coal mill, the filter screen 702 can be pulled to slide inside the slide groove 701.

[0034] A filter screen 702 is slidably connected inside the slide groove 701 , and a slide groove 704 is provided through the top of the filter screen 702 . When the filter screen 702 completely slides into the slide groove 701 , the slide groove 701 can be driven to dock with the thread groove 703 .

[0035] The internal thread of the sliding groove 704 is connected with a threaded rod 705, and a threaded groove 703 is opened on the top of the cylinder 2. At this time, the threaded rod 705 can be rotated, and the threaded rod 705 can slide inside the sliding groove 704. When the end of the threaded rod 705 slides out of the sliding groove 704, it can slide in the threaded groove 703.

[0036] Working principle: When using the coal mill for thermal power generation with dust reduction function, first, after the coal is ground into powder by the coal mill, it can be discharged through the discharge port 5. In the process of coal powder falling, it is easy to drift into the surrounding air, thereby affecting the surrounding environment. At this time, the water pump 603 can be started. The water pump 603 can extract the water inside the water tank 601. The water extracted by the water pump 603 flows into the water pipe 606 through the hose 608. When the water pipe 606 is full of water, the dust reduction spray head 607 can be used for spraying. The water mist sprayed by the dust reduction spray head 607 can reduce dust in the surrounding area. When the dust reduction angle needs to be adjusted, the motor 605 can be started to drive the water pipe 606 to rotate, thereby driving the dust reduction spray head 607 to spray at various angles. Before using the coal mill, the The filter screen 702 slides inside the slide groove 701. When the filter screen 702 completely slides into the slide groove 701, the slide groove 701 can be driven to dock with the threaded groove 703. At this time, the threaded rod 705 can be rotated. The threaded rod 705 can be rotated to slide inside the sliding groove 704. When the end of the threaded rod 705 slides out of the sliding groove 704, it can slide in the threaded groove 703. When the end of the threaded rod 705 completely slides into the threaded groove 703, the filter screen 702 can be fixed. After the filter screen 702 is fixed, the ground coal mine can be screened, and qualified coal powder can be discharged through the discharge port 5, which is convenient for using the filter screen 702 to filter the ground coal powder. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mill for thermal power generation with dust reduction function, comprising: The support frame (1) and the cylinder (2) are characterized by: A cylinder (2) is connected between the support frames (1), a grinding ball (3) is movably connected inside the cylinder (2), one side of the cylinder (2) is connected to a feed port (4), and the other side of the cylinder (2) away from the feed port (4) is connected to a discharge port (5), a dust reduction mechanism (6) is connected between the support frames (1) and the discharge port (5), and a filtering mechanism (7) is connected to the top of the cylinder (2).

2. A coal mill for thermal power generation with dust reduction function according to claim 1, characterized in that: The dust reduction mechanism (6) comprises a water tank (601), a water inlet (602), a water pump (603), a fixing block (604), a motor (605), a water pipe (606), a dust reduction spray head (607) and a hose (608); The top of the support frame (1) is connected to a water tank (601).

3. A coal mill for thermal power generation with dust reduction function according to claim 2, characterized in that: The top of the water tank (601) is connected to a water inlet (602), and the top of the water tank (601) is connected to a water pump (603).

4. The coal mill for thermal power generation with dust reduction function according to claim 2, characterized in that: A fixing block (604) is connected to the side of the discharge port (5), and a motor (605) is connected to the side of the fixing block (604); A water pipe (606) is connected between the motor (605) and the fixing block (604).

5. The coal mill for thermal power generation with dust reduction function according to claim 2, characterized in that: A hose (608) is connected between the water pipe (606) and the water pump (603), and a dust suppression spray head (607) is connected to the surface of the water pipe (606).

6. The coal mill for thermal power generation with dust reduction function according to claim 1, characterized in that: The filtering mechanism (7) comprises a sliding groove (701), a filtering screen (702), a threaded groove (703), a sliding groove (704) and a threaded rod (705); The top of the cylinder (2) is provided with a slide groove (701).

7. A coal mill for thermal power generation with dust reduction function according to claim 6, characterized in that: The sliding groove (701) is slidably connected to a filter screen (702) inside, and a sliding groove (704) is provided through the top of the filter screen (702).

8. The coal mill for thermal power generation with dust reduction function according to claim 6, characterized in that: The sliding groove (704) is internally threadedly connected to a threaded rod (705), and a threaded groove (703) is formed on the top of the cylinder (2).

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