Observation window cleaning device for coal feeder of power plant

Abstract

The utility model discloses an observation window cleaning device for a coal feeder of a power plant, which relates to the technical field of coal feeders and comprises a coal feeder body, a cleaning mechanism is arranged on the front side of the coal feeder body and comprises a driving motor, and the driving motor is arranged on the front side of the coal feeder body. The output end of the driving motor penetrates through the front side of the coal feeder body to be fixedly provided with a movable frame, the end of the movable frame is slidably installed on the outer surfaces of two sets of sliding rods through movable blocks, and the two sets of sliding rods are both arranged on the rear side of the water collecting rod. The ends of the two sets of water collecting rods are slidably installed on the outer surface of the guide rod through sliding blocks, a cleaning agent in a cleaning liquid box is pressurized and conveyed to a flow dividing pipe through a liquid pump, and the cleaning agent is atomized and sprayed out through through holes in the front sides of the water collecting rods, and meanwhile when a driving motor drives a movable frame to reciprocate along the sliding rods, the water collecting rods synchronously move on the guide rod through the sliding blocks; the pulverized coal on the observation window is cleaned, and the definition of the observation window is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal feeder technology, specifically to a cleaning device for the observation window of a coal feeder in a power plant. Background Technology

[0002] A coal feeder in a power plant is a mechanical device that accurately adjusts the coal feed rate of the coal mill according to load requirements. It is located between the raw coal hopper and the coal mill. In a direct-fired pulverizing system, the coal feed rate is directly adapted to the boiler load. There are various types of coal feeders, which can be classified into volumetric and gravity types according to their structural characteristics and working principles. The working principle of the gravity coal feeder relies on the cooperation of a weighing device and a control system to achieve the weighing and precise control of coal conveying. It has the advantages of accurate weighing, reliable operation, compact size, good sealing, and suitability for positive pressure operation. It has been widely used in large boiler units. An observation window is usually set on the surface of the coal feeder. The observation window is equipped with a mechanically rotatable scraper for cleaning the observation window and to facilitate the observation of the internal working conditions by the staff.

[0003] However, when the coal quality is abnormal, such as high moisture content or high fine coal powder content, it is easy to adhere to the observation window of the coal feeder and is difficult to remove effectively. This affects the observation of the internal condition of the coal feeder during inspection. If the coal feeder has an abnormal situation, it cannot be effectively observed and judged, resulting in the coal feeder being unable to supply coal normally or even being damaged. Utility Model Content

[0004] To solve the above-mentioned technical problems, a cleaning device for the observation window of a coal feeder in a power plant is provided. This technical solution solves the problem mentioned in the background art that when the coal quality is abnormal, such as high moisture content or high content of fine coal powder, it is easy to adhere to the observation window of the coal feeder and is difficult to clean effectively, affecting the observation of the internal condition of the coal feeder during inspection. If the coal feeder has an abnormal situation, it is impossible to make an effective observation and judgment, resulting in the coal feeder being unable to supply coal normally or even being damaged.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A cleaning device for the observation window of a coal feeder in a power plant includes a coal feeder body. A cleaning mechanism is provided on the front side of the coal feeder body. The cleaning mechanism includes a drive motor, which is located on the front side of the coal feeder body. A movable frame is fixedly installed through the output end of the drive motor on the front side of the coal feeder body. The end of the movable frame is slidably mounted on the outer surface of a slide rod via a movable block. Two sets of slide rods are provided, both sets of slide rods are located on the rear side of a water collection rod. The ends of both sets of water collection rods are slidably mounted on the outer surface of a guide rod via a slider. Both sets of guide rods are located inside the coal feeder body.

[0007] Preferably, the front side of the coal feeder body is provided with two sets of mounting slots. The interior of each of the two sets of mounting slots is provided with an observation window through a pressure ring. The two sets of pressure rings are fixedly installed inside the mounting slots by fixing bolts. Air ducts are provided at the positions corresponding to the two sets of observation windows. The two sets of air ducts are fixedly installed inside the coal feeder body by mounting brackets.

[0008] Preferably, the air duct is provided in two sets, and both sets of air ducts are located at the corresponding observation window positions.

[0009] Preferably, the outer surfaces of both sets of air ducts are connected to several sets of high-pressure nozzles.

[0010] Preferably, the rear ends of the tops of both sets of water collecting rods are connected to the ends of the diversion pipes. The outer surface of the diversion pipes is connected to the outlet of the liquid pump through a connecting pipe. The inlet of the liquid pump is connected to the cleaning liquid tank, and the cleaning liquid tank is located at the top of the coal feeder body.

[0011] Preferably, both sets of water collecting rods have several sets of through holes on their front sides.

[0012] Preferably, the outer surface of the air duct is connected to one end of the compressed air pipe and the sealed air duct, and the other end of the sealed air duct is connected to the coal feeder body.

[0013] Preferably, the movable frame is a V-shaped frame.

[0014] Preferably, scraper bars are also provided on the front side of the two sets of water collection rods.

[0015] Preferably, each of the high-pressure nozzles is provided with a dustproof net inside.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] First, the cleaning agent in the cleaning liquid tank is pressurized and delivered to the distribution pipe by the liquid pump. It is then atomized and sprayed out through the through hole on the front side of the water collecting rod. At the same time, when the drive motor drives the movable frame to reciprocate along the slide rod, the water collecting rod moves synchronously on the guide rod through the slider, thus cleaning the coal dust on the observation window. Second, the cleaning air is blown into the observation window continuously or manually through several sets of high-pressure nozzles. One cleaning air is drawn from the sealed air duct designed into the coal feeder body, and the other cleaning air is drawn from the nearby compressed air pipeline. The airflow is evenly distributed to the vicinity of the observation window through the two sets of air ducts, effectively blowing away the wet coal or fine coal dust attached to the observation window and improving the clarity of the observation window. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0019] Figure 2This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the cleaning mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the observation window pressure ring structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the cleaning mechanism of this utility model.

[0023] The numbers on the map are:

[0024] 1. Coal feeder body;

[0025] 2. Mounting groove; 201. Pressure ring; 202. Fixing bolt;

[0026] 3. Observation window;

[0027] 4. Air duct; 401. High-pressure nozzle; 402. Dustproof net.

[0028] 5. Cleaning mechanism; 501. Drive motor; 502. Movable frame; 503. Guide rod; 504. Slider; 505. Water collection rod; 506. Slide rod; 507. Movable block; 508. Through hole; 509. Scraper; 510. Diverter pipe; 511. Connecting pipe; 512. Liquid pump; 513. Cleaning liquid tank. Detailed Implementation

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] Reference Figure 1-4The diagram illustrates a cleaning device for the observation window of a coal feeder in a power plant. It includes a coal feeder body 1, with a cleaning mechanism 5 located on the front side of the body 1. The cleaning mechanism 5 includes a drive motor 501, which is positioned on the front side of the coal feeder body 1. A movable frame 502, a V-shaped frame, is fixedly mounted on the front side of the coal feeder body 1 via a movable block 507 at its end. Two sets of slide rods 506 are provided, both located behind a water collection rod 505. The rear end of the top of the water rod 505 is connected to the end of the diversion pipe 510. The outer surface of the diversion pipe 510 is connected to the outlet of the liquid pump 512 through the connecting pipe 511. The inlet of the liquid pump 512 is connected to the cleaning liquid tank 513. The cleaning liquid tank 513 is located at the top of the coal feeder body 1. The ends of the two sets of water collecting rods 505 are slidably mounted on the outer surface of the guide rod 503 through the slider 504. Several sets of through holes 508 are opened on the front side of the two sets of water collecting rods 505. Scraper strips 509 are also provided on the front side of the two sets of water collecting rods 505. The two sets of guide rods 503 are located inside the coal feeder body 1.

[0031] In this solution, the movable frame 502 is driven to rotate by the drive motor 501. The movable frame 502 slides on the slide rod 506 via the movable block 507, which drives the water collecting rod 505 to move on the guide rod 503, ensuring that the cleaning range covers the entire observation window 3. The water collecting rod 505 is connected to the liquid pump 512 through the diversion pipe 510. The liquid pump 512 draws cleaning liquid from the cleaning liquid tank 513 and sprays it evenly on the observation window 3 through the through hole 508 on the front side of the water collecting rod 505. At the same time, the scraper 509 scrapes away residual dirt, achieving a thorough cleaning of the observation window 3, effectively preventing obstruction of vision caused by coal dust accumulation, and improving the safety of equipment operation.

[0032] Reference Figure 1-4 As shown, two sets of mounting slots 2 are provided on the front side of the coal feeder body 1. Each set of mounting slots 2 has an observation window 3 installed inside via a pressure ring 201. Both pressure rings 201 are fixedly installed inside the mounting slots 2 via fixing bolts 202. Air ducts 4 are installed corresponding to the positions of the two sets of observation windows 3. The two sets of air ducts 4 are fixedly installed inside the coal feeder body 1 via mounting brackets. There are two sets of air ducts 4. The outer surface of each air duct 4 connects to one end of a compressed air pipe and a sealed air duct. The other end of the sealed air duct connects to the coal feeder body 1, and the other end of the compressed air pipe connects to the air compressor. Both sets of air ducts 4 are located at the positions corresponding to the observation windows 3. Several sets of high-pressure nozzles 401 are connected to the outer surface of each set of air ducts 4. Dustproof nets 402 are installed inside each set of high-pressure nozzles 401.

[0033] In this design, two sets of mounting slots 2 are provided on the front side of the coal feeder body 1. The observation window 3 is fixed in the mounting slot 2 by the pressure ring 201 and the fixing bolt 202, which ensures the sealing and stability of the observation window 3, facilitates the installation and replacement of the observation window 3, and improves the operating efficiency and safety of the equipment.

[0034] The working principle of this utility model is as follows: When the device is in use, firstly, the movable frame 502 is driven to rotate by the drive motor 501. The movable frame 502 slides on the slide rod 506 through the movable block 507, which drives the water collecting rod 505 to move on the guide rod 503, so that the cleaning range covers the entire observation window 3. The liquid pump 512 draws cleaning liquid from the cleaning liquid tank 513 and delivers it to the water collecting rod 505 through the diversion pipe 510. The cleaning liquid is evenly sprayed onto the observation window 3 through the through hole 508 on the front side of the water collecting rod 505. At the same time, the scraper 509 scrapes off the residual dirt, so as to achieve a thorough cleaning of the observation window 3. Secondly, the coal feeder body 1 and the air compressor respectively deliver gas to the sealed air duct and the compressed air pipeline. Through several sets of high-pressure nozzles 401 connected to the surface of the air duct 4, the high-pressure airflow continuously blows the observation window 3 to prevent coal dust from adhering. The high-pressure nozzles 401 are equipped with dustproof nets 402 inside, which effectively prevent large particles of coal dust from entering the air duct 4.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for the observation window of a coal feeder in a power plant, comprising a coal feeder body (1), characterized in that, A cleaning mechanism (5) is provided on the front side of the coal feeder body (1). The cleaning mechanism (5) includes a drive motor (501). The drive motor (501) is located on the front side of the coal feeder body (1). The output end of the drive motor (501) passes through the front side of the coal feeder body (1) and is fixedly installed with a movable frame (502). The end of the movable frame (502) is slidably installed on the outer surface of the slide rod (506) through a movable block (507). There are two sets of slide rods (506). Both sets of slide rods (506) are located on the rear side of the water collecting rod (505). The ends of both sets of water collecting rods (505) are slidably installed on the outer surface of the guide rod (503) through a slider (504). Both sets of guide rods (503) are located inside the coal feeder body (1).

2. The observation window cleaning device for a coal feeder in a power plant according to claim 1, characterized in that: The front side of the coal feeder body (1) is provided with two sets of mounting slots (2). The interior of each set of mounting slots (2) is provided with an observation window (3) through a pressure ring (201). The pressure rings (201) are fixedly installed inside the mounting slots (2) through fixing bolts (202). Air ducts (4) are provided at the positions corresponding to the two sets of observation windows (3). The air ducts (4) are fixedly installed inside the coal feeder body (1) through mounting brackets.

3. A cleaning device for the observation window of a coal feeder in a power plant according to claim 2, characterized in that: The air duct (4) is provided in two sets, and both sets of air duct (4) are located at the corresponding observation window (3).

4. A cleaning device for the observation window of a coal feeder in a power plant according to claim 3, characterized in that: Both sets of air ducts (4) have several sets of high-pressure nozzles (401) connected to their outer surfaces.

5. A cleaning device for the observation window of a coal feeder in a power plant according to claim 1, characterized in that: The rear end of the top of both sets of water collecting rods (505) is connected to the end of the diversion pipe (510). The outer surface of the diversion pipe (510) is connected to the outlet of the liquid pump (512) through the connecting pipe (511). The inlet of the liquid pump (512) is connected to the cleaning liquid tank (513). The cleaning liquid tank (513) is located at the top of the coal feeder body (1).

6. A cleaning device for the observation window of a coal feeder in a power plant according to claim 1, characterized in that: Both sets of water collection rods (505) have several sets of through holes (508) on their front sides.

7. A cleaning device for the observation window of a coal feeder in a power plant according to claim 4, characterized in that: The outer surface of the air duct (4) is connected to one end of the compressed air pipe and the sealed air duct, and the other end of the sealed air duct is connected to the coal feeder body (1).

8. A cleaning device for the observation window of a coal feeder in a power plant according to claim 4, characterized in that: The movable frame (502) is a V-shaped frame.

9. A cleaning device for the observation window of a coal feeder in a power plant according to claim 6, characterized in that: The front side of the two sets of water collection rods (505) is also provided with scraper strips (509).

10. A cleaning device for the observation window of a coal feeder in a power plant according to claim 4, characterized in that: The interior of each of the high-pressure nozzles (401) is provided with a dustproof net (402).

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