A kind of inner cavity cleaning mechanism for coal crusher

Abstract

The utility model discloses a kind of inner cavity cleaning mechanisms for coal breaker, including the rotating shaft of being threaded in the central axis of cylinder, the bottom of rotating shaft is connected with motor, and rotating shaft is connected between cylinder by bearing;Several hammer sticks are provided on rotating shaft, and hammer stick is vertically arranged with rotating shaft;Scraping assembly is sleeved on rotating shaft, and scraping assembly is arranged with rotating shaft;Scraping assembly includes a pair of coaxially arranged connecting ring with rotating shaft, and several side curved scrapers are connected between connecting ring;Several arc scrapers are arranged in the ring of connecting ring, and arc scraper passes through the center of connecting ring.The utility model has the advantages of simple structure, good scraping effect, can keep the cleanliness inside coal breaker, avoid shutdown due to adhered coal block, effectively improve production efficiency, improve the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of coal combustion technology, and more specifically to an internal cavity cleaning mechanism for a coal crusher. Background Technology

[0002] In order to reduce their power generation costs and obtain better combustion efficiency of raw coal, thermal power plants usually need to process the raw coal entering the plant. Coal crushers are an essential piece of equipment for processing raw coal.

[0003] The working principle of a coal crusher is to use a high-speed rotating breaker hammer to crush large pieces of raw coal so that the particle size of the raw coal meets the fuel requirements of the boiler. Because the working environment of this equipment is harsh, coal dust is easy to stick to the inner cavity of the coal crusher. Over time, it will stick together and clump up, thus clogging the crushing device. In severe cases, it can cause the machine to stop and affect production efficiency.

[0004] Therefore, there is an urgent need for an internal cleaning mechanism for coal crushers. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an internal cavity cleaning mechanism for a coal crusher, so as to solve the problems in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0007] An internal cleaning mechanism for a coal crusher is installed inside the crusher's cylinder. The cylinder has a discharge port at its bottom and includes a rotating shaft running along the central axis of the cylinder. A motor for providing power is connected to the bottom of the rotating shaft, and the rotating shaft is connected to the cylinder via a bearing. Several hammers for crushing coal are mounted on the rotating shaft, perpendicular to the shaft. A scraping assembly for cleaning the inner wall of the cylinder is sleeved on the rotating shaft, and is mounted on the same side as the rotating shaft. The scraping assembly includes a pair of connecting rings coaxial with the rotating shaft, and several curved scrapers for cleaning the side walls of the cylinder are connected between the connecting rings. Several arc-shaped scrapers for cleaning the end faces of the cylinder are installed inside the connecting rings, and the arc-shaped scrapers pass through the center of the connecting rings.

[0008] To further optimize the technical solution, the side-curved scraper is attached to the inner wall of the cylinder, extending from the upper end of the inner wall of the cylinder to the lower end in a curved manner.

[0009] To further optimize the technical solution, four side-curved scrapers are provided, and the side-curved scrapers have a structure that is thick in the middle and thin at both sides.

[0010] To further optimize the technical solution, an arc-shaped scraper is provided on the connecting ring, and a connection port is opened in the middle of the arc-shaped scraper. The scraping component is connected to the rotating shaft through the connection port.

[0011] To further optimize the technical solution, the arc-shaped scraper has a structure that is thick in the middle and thin at both sides.

[0012] Due to the adoption of the above technical solutions, the technical progress achieved by this utility model is as follows.

[0013] This utility model provides an internal cavity cleaning mechanism for a coal crusher. By incorporating a side-curved scraper that bends along the inner wall of the cylinder from top to bottom, it removes coal adhering to the inner wall. An arc-shaped scraper further removes coal adhering to the top and bottom surfaces of the cylinder. The scraping mechanism is connected to the shaft of the existing motor in the coal crusher, allowing for simultaneous coal crushing and cleaning without the need for an additional power unit. This utility model offers advantages such as simple structure and effective scraping, maintaining the cleanliness of the coal crusher's interior, preventing downtime due to adhering coal lumps, effectively improving production efficiency, and extending the equipment's lifespan. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; The components are: 1. cylinder, 2. arc-shaped scraper, 21. connection port, 3. connecting ring, 4. side-curved scraper, 5. rotating shaft, 6. hammer, 7. motor, 8. discharge port, 9. bearing, 10. scraping assembly. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] An internal cavity cleaning mechanism for a coal crusher is installed inside the crusher's cylinder 1, with a discharge port 8 at the bottom of the cylinder 1. Figures 1 to 2 As shown, it includes a cylinder 1, an arc-shaped scraper 2, a connecting port 21, a connecting ring 3, a side-curved scraper 4, a rotating shaft 5, a hammer 6, a motor 7, a discharge port 8, a bearing 9, and a scraping assembly 10.

[0017] A rotating shaft 5 is mounted on the central axis of the cylinder 1. A motor 7 for providing power is connected to the bottom of the rotating shaft 5, and the rotating shaft is connected to the cylinder through a bearing. Several hammers 6 for crushing coal are mounted on the rotating shaft 5. The hammers 6 are arranged perpendicular to the rotating shaft 5. When the motor 7 rotates, it drives the hammers 6 to rotate at high speed to crush large pieces of raw coal.

[0018] A scraping assembly 10 is fitted onto the rotating shaft 5. The scraping assembly 10 is used to clean the inner wall of the cylinder 1 and is arranged in the same manner as the rotating shaft 5. The scraping assembly 10 includes a pair of connecting rings 3 coaxially arranged with the rotating shaft 5. Several curved strip-shaped side-curved scrapers 4 are connected between the connecting rings 3. The side-curved scrapers 4 are attached to the inner wall of the cylinder 1 and extend curvedly from the upper end to the lower end of the inner wall of the cylinder 1 to clean the side wall of the cylinder 1. There are four side-curved scrapers 4, and the side-curved scrapers 4 have a structure that is thicker in the middle and thinner at the edges.

[0019] An arc-shaped scraper 2 is installed inside the connecting ring 3 to clean the end face of the cylinder 1. The arc-shaped scraper 2 passes through the center of the connecting ring 3. A connection port 21 is opened in the middle of the arc-shaped scraper 2, through which the arc-shaped scraper 2 is connected to the rotating shaft 5 to realize the connection between the scraping component and the cylinder. The arc-shaped scraper 2 has a structure that is thicker in the middle and thinner at both ends. The thinner edges ensure that the scraper can be inserted between the adhering coal and the cylinder, while the thicker middle ensures the overall stability, so as to quickly separate the adhering coal from the inner wall of the cylinder.

[0020] Both the arc-shaped scraper 2 and the side-curved scraper 4 are arc-shaped. Compared with ordinary straight scrapers, the arc-shaped scrapers can increase the contact area with the coal blocks adhering to the inner wall of the cylinder, which can improve the scraping efficiency and achieve a better scraping effect.

[0021] In actual use, the motor drives the rotating shaft, and the hammer rotates under the drive of the rotating shaft, crushing large pieces of raw coal inside the coal crusher cylinder. Since the scraping component is installed on the rotating shaft, the side-curved scraper in the scraping component scrapes off the coal adhering to the inner wall of the cylinder, and the arc-shaped scraper scrapes off the coal adhering to the top and bottom surfaces of the cylinder, ensuring the cleanliness of the inner wall of the cylinder and preventing excessive adhesion that could cause blockage and shutdown. The scraped-off coal is mixed with other coal and discharged through the discharge port.

Claims

1. An internal cavity cleaning mechanism for a coal crusher, disposed inside the cylinder (1) of the coal crusher, wherein a discharge port (8) is provided at the bottom of the cylinder (1), characterized in that: The device includes a rotating shaft (5) that passes through the central axis of the cylinder (1). The bottom of the rotating shaft (5) is connected to a motor (7) for providing power, and the rotating shaft is connected to the cylinder through a bearing. The rotating shaft (5) is provided with several hammers (6) for crushing coal, and the hammers (6) are arranged perpendicular to the rotating shaft (5). The rotating shaft (5) is fitted with a scraping assembly (10) for cleaning the inner wall of the cylinder (1), and the scraping assembly (10) is arranged with the rotating shaft (5). The scraping assembly (10) includes a pair of connecting rings (3) arranged coaxially with the rotating shaft (5), and several curved strip-shaped side-curved scrapers (4) for cleaning the side wall of the cylinder (1) are connected between the connecting rings (3). Several arc-shaped scrapers (2) for cleaning the end face of the cylinder (1) are arranged inside the ring of the connecting ring (3), and the arc-shaped scrapers (2) pass through the center of the connecting ring (3).

2. The internal cavity cleaning mechanism for a coal crusher according to claim 1, characterized in that: The side-curved scraper (4) is attached to the inner wall of the cylinder (1) and extends from the upper end of the inner wall of the cylinder (1) to the lower end.

3. The internal cavity cleaning mechanism for a coal crusher according to claim 1, characterized in that: The side-curved scraper (4) is provided in four parts, and the side-curved scraper (4) has a structure that is thick in the middle and thin on both sides.

4. The internal cavity cleaning mechanism for a coal crusher according to claim 1, characterized in that: An arc-shaped scraper (2) is provided on the connecting ring (3), and a connection port (21) is provided in the middle of the arc-shaped scraper (2). The scraping component (10) is connected to the rotating shaft (5) through the connection port (21).

5. The internal cavity cleaning mechanism for a coal crusher according to claim 4, characterized in that: The arc-shaped scraper (2) has a structure that is thick in the middle and thin on both sides.

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