Scraper device of scraper slag conveyor for thermal power plant

Abstract

The utility model discloses a scraper device of a scraper slag conveyor for a thermal power plant, which relates to the technical field of scraper slag conveyors and comprises a slag conveyor, two driving rollers are rotatably mounted in the slag conveyor, a conveyor belt is slidably connected in the slag conveyor, a group of scrapers are fixedly connected to the outer surface of the conveyor belt, and the scraper device is mounted on the scraper slag conveyor. A scraping and sweeping mechanism used for cleaning the scraping plate is arranged in the slag conveying machine, the scraping and sweeping mechanism comprises a sliding plate fixed to the inner wall of the slag conveying machine, and the top face of the sliding plate is fixedly connected with a fixing frame and an arc-shaped limiting plate. According to the device, through the arrangement of a scraping and sweeping plate, a transmission plate, an arc-shaped limiting plate and a sliding plate, the scraping and sweeping plate can be pushed by the scraping plate to slide on the surface of the scraping plate, so that the device can automatically clean materials such as slag adhered to the surface of the scraping plate, and the situation that the operation load of the device is increased due to excessive materials adhered to the scraping plate is avoided; the device blockage caused by material backflow is prevented, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of scraper slag conveyors, specifically a scraper device for a scraper slag conveyor used in thermal power plants. Background Technology

[0002] Scraper conveyors are a type of buried scraper conveyor, a transport device that uses a moving scraper chain to continuously transport bulk materials. In the process of power generation in thermal power plants, a large amount of slag is generated, so scraper conveyors are needed to transfer the slag.

[0003] According to patent CN208761475U, a buried scraper conveyor is disclosed, which includes wear-resistant steel plates. Several wear-resistant steel plates are fixed along the length direction at the bottom of the housing. Each roller assembly includes a first bearing seat and a rotating shaft. The first bearing seats are symmetrically arranged on the outer walls of both sides of the housing.

[0004] The above solution can extend the service life of the shell and prevent slag leakage caused by wear at the bottom of the shell in a short period of time. However, the above solution is inconvenient to clean the scraper during implementation. The slag adhering to the scraper will increase the motor load and easily cause material blockage, which will damage the device. Therefore, we provide a scraper device for a scraper slag conveyor for thermal power plants to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a scraper device for a scraper conveyor used in thermal power plants to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a scraper device for a scraper conveyor used in thermal power plants, comprising a slag conveyor, two drive rollers rotatably mounted inside the slag conveyor, a conveyor belt slidably connected inside the slag conveyor, a set of scrapers fixedly connected to the outer surface of the conveyor belt, and a scraping mechanism for cleaning the scrapers inside the slag conveyor, the scraping mechanism comprising a sliding plate fixed to the inner wall of the slag conveyor, a fixed frame and an arc-shaped limiting plate fixedly connected to the top surface of the sliding plate, a transmission plate movably connected inside the fixed frame, and a scraper plate fixedly connected to one end of the transmission plate.

[0007] Preferably, the conveyor belt is rotatably connected to the drive roller, and the scraper is adapted to the scraper, with the scraper serving to remove material adhering to the scraper.

[0008] Preferably, one end of the transmission plate is rotatably connected to a rotating drum, which slides inside the arc-shaped limiting plate, and the rotating drum serves to change the motion state of the transmission plate.

[0009] Preferably, a support rod is fixedly connected to the top of the fixed frame, and a sliding groove is provided inside the transmission plate. The support rod slides inside the sliding groove and provides support for the movement of the transmission plate.

[0010] Preferably, a set of telescopic springs is provided above the sliding plate, and the two ends of the telescopic springs are fixedly connected to the fixed frame and the transmission plate, respectively. The telescopic springs play the role of pulling the transmission plate to reset.

[0011] Preferably, protective pads are fixedly connected to the inner walls on both sides of the slag conveyor, and the protective pads are slidably connected to the conveyor belt, serving to seal the gaps.

[0012] Preferably, the end of the slag conveyor is fixedly connected to a feed inlet, and the bottom surface of the slag conveyor is fixedly connected to a support frame, which provides stable support for the use of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up a scraper, transmission plate, arc-shaped limiting plate and sliding plate, the scraper can slide on the surface of the scraper under the push of the scraper and restricted by the arc-shaped limiting plate. This allows the device to clean the slag and other materials adhering to the scraper surface by itself, avoids excessive material adhering to the scraper, which would increase the load on the device, prevent material backflow that would cause blockage, and extend the service life of the device.

[0015] 2. This application uses a support rod, a sliding groove, and a telescopic spring. The support rod and sliding groove can provide support and limit the swing of the transmission plate, and ensure the transmission between the scraper and the rotating drum. The telescopic spring will give the transmission plate a pulling force through the change of its elastic potential energy, so that the scraper can better clean the scraper and provide power for the reset of the scraping mechanism.

[0016] 3. This application uses protective pads to seal the gaps between the conveyor belt and the slag conveyor, thereby preventing waste slag and other materials from falling into the slag conveyor and hindering the normal operation of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the scraper structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the scraping mechanism of this utility model.

[0021] Labels in the diagram: 1. Slag conveyor; 2. Drive roller; 3. Conveyor belt; 4. Scraper;

[0022] 5. Scraping mechanism; 501. Sliding plate; 502. Fixing frame; 503. Transmission plate; 504. Scraping plate; 505. Arc-shaped limiting plate; 506. Rotary drum; 507. Support rod; 508. Slide groove; 509. Telescopic spring;

[0023] 6. Protective pad; 7. Feed inlet; 8. Support frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a technical solution for the scraper device of a scraper conveyor for thermal power plants.

[0026] like Figure 1 - Figure 4 As shown, the device includes a slag conveyor 1. A feed inlet 7 is fixedly connected to the end of the slag conveyor 1, and a support frame 8 is fixedly connected to the bottom surface of the slag conveyor 1. Workers can pour waste slag and other materials generated in the thermal power plant into the slag conveyor 1 through the feed inlet 7 for transport. The support frame 8 supports the slag conveyor 1, facilitating the transport of waste slag and other materials to designated locations. The slag conveyor 1 and its internal electrical components are existing technologies and will not be described in detail in this application. The slag conveyor 1 can be equipped with a fully enclosed or semi-enclosed shell depending on specific usage requirements. The attached drawings show a semi-enclosed shell design. These drawings are for reference only; the actual production requirements shall prevail.

[0027] The slag conveyor 1 has two drive rollers 2 rotatably installed inside. The conveyor belt 3 is slidably connected inside the slag conveyor 1 and is rotatably connected to the drive rollers 2. The drive motor is fixedly installed outside the slag conveyor 1. The drive rollers 2 are fixedly connected to the output shaft of the drive motor. When the drive motor starts, it can drive the drive rollers 2 to rotate. The rotation of the drive rollers 2 can drive the conveyor belt 3 to rotate through friction, thereby enabling the device to transport materials such as waste slag.

[0028] Protective pads 6 are fixedly connected to the inner walls of both sides of the slag conveyor 1. The protective pads 6 are slidably connected to the conveyor belt 3. The protective pads 6 can play a protective role by sealing the gaps between the two sides of the conveyor belt 3 and the slag conveyor 1, thereby preventing waste residue and other materials from falling into the slag conveyor 1 through the gaps and hindering the normal operation of the device. The protective pads 6 are made of rubber and have good toughness and strength, so they will not hinder the conveying operation of the conveyor belt 3.

[0029] A set of scrapers 4 are fixedly connected to the outer surface of the conveyor belt 3. The inside of the slag conveyor 1 is equipped with a scraping mechanism 5 for cleaning the scrapers 4. The scrapers 4 can move inside the slag conveyor 1 as the conveyor belt 3 circulates, thereby driving the slag and other materials to move on the conveyor belt 3 until the head of the machine uses inertia to throw the material out, so as to complete the material conveying operation. The scrapers 4 can better restrict the slag and prevent the material from slipping off during the transportation process and reducing the conveying effect.

[0030] The scraping mechanism 5 includes a sliding plate 501 fixed on the inner wall of the slag conveyor 1. A fixed frame 502 and an arc-shaped limiting plate 505 are fixedly connected to the top surface of the sliding plate 501. The sliding plate 501 has a certain inclination angle. When the scraping plate 504 scrapes the material residue adhering to the scraper 4, it will fall onto the sliding plate 501 and slide down the sliding plate 501 into the collection device. The arc of the arc-shaped limiting plate 505 is consistent with the arc of the head of the conveyor belt 3, so that the two ends of the transmission plate 503 can rotate synchronously under the push of the scraper 4, avoiding motion interference.

[0031] A transmission plate 503 is movably connected inside the fixed frame 502. A scraper plate 504 is fixedly connected to one end of the transmission plate 503. The scraper plate 504 is adapted to the scraper plate 4. During the process of conveying slag and other materials, the scraper plate 4 at the head of the conveyor belt 3 will come into contact with the scraper plate 504 after rotating to a certain position, and will give the scraper plate 504 a thrust. The scraper plate 504 will push the transmission plate 503 to move under the force. The movement of the transmission plate 503 can make the side of the scraper plate 504 that is in contact with the scraper plate 4 rotate at a certain angle under the limiting action of the arc-shaped limiting plate 505, thereby scraping off the slag and other materials adhering to the scraper plate 4, avoiding the material from adhering to the scraper plate 4 and increasing the idle load of the device.

[0032] One end of the transmission plate 503 is rotatably connected to a rotating drum 506. The rotating drum 506 slides inside the arc-shaped limiting plate 505. When the transmission plate 503 is pushed by the scraping plate 504 and moves, the rotating drum 506 at its end slides on the arc-shaped limiting plate 505. Under the restriction of the arc-shaped limiting plate 505, it drives the scraping plate 504 to rotate, so that the scraping plate 504 can follow the movement of the scraper 4 to clean its surface. The rotating drum 506 is made of silicone material and has a certain friction with the arc-shaped limiting plate 505, which can reduce the impact force. At the same time, it can also prevent the transmission plate 503 from rebounding too much during the reset process, thus reducing the service life of the scraping mechanism 5.

[0033] A support rod 507 is fixedly connected to the top of the fixed frame 502. A sliding groove 508 is provided inside the transmission plate 503. The support rod 507 slides inside the sliding groove 508. The support rod 507 can provide a fulcrum for the movement of the transmission plate 503, so that the two ends of the transmission plate 503 can move synchronously under the action of the lever principle. The fixed frame 502 provides support for the movement of the transmission plate 503.

[0034] A set of telescopic springs 509 is provided above the sliding plate 501. The two ends of the telescopic springs 509 are fixedly connected to the fixed frame 502 and the transmission plate 503, respectively. When the scraper plate 504 is pushed by the scraper plate 4, the rotating drum 506 will slide on the arc-shaped limiting plate 505. At this time, the telescopic springs 509 will give the transmission plate 503 a pulling force, so that the scraper plate 504 can keep in contact with the surface of the scraper plate 4, thereby improving the cleaning effect of the device. When the external force on the scraper plate 504 disappears, the telescopic springs 509 will return to their original position and give the transmission plate 503 a pulling force, so that the transmission plate 503 can return to its original position, making it convenient for the scraper plate 504 to clean the scraper plate 4 again.

[0035] Working Principle: When operators use this device to convey materials such as slag, they first start the device and pour the slag or other materials into the slag conveyor 1 through the feed inlet 7. At this time, the drive roller 2 rotates, which drives the conveyor belt 3 to rotate. The rotation of the conveyor belt 3 can transport the slag or other materials through the scraper 4. When the scraper 4 rotates to the head position, it can unload the material. When the scraper 4 rotates again, it will come into contact with the scraper plate 504 and apply pressure to the scraper plate 504. The scraper plate 504, under force, drives the transmission plate 503 to move. At this time, the transmission plate 503 moves. The rotating drum 506 at the other end of the moving plate 503 will move along the arc-shaped limiting plate 505, thereby driving the transmission plate 503 to swing, so that the scraper plate 504 can fit against the surface of the scraper plate 4 and slide on the surface of the scraper plate 4, thereby scraping the material adhering to the scraper plate 4 into the sliding plate 501. After the scraper plate 4 continues to rotate until it is separated from the scraper plate 504, the transmission plate 503 will be reset under the pull of the telescopic spring 509, so as to facilitate the scraping operation again, realizing the automatic cleaning of the material adhering to the scraper plate 4.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A scraper device for a scraper conveyor used in thermal power plants, characterized in that: The slag conveyor (1) is characterized in that: two drive rollers (2) are rotatably installed inside the slag conveyor (1), a conveyor belt (3) is slidably connected inside the slag conveyor (1), a set of scrapers (4) is fixedly connected to the outer surface of the conveyor belt (3), and a scraping mechanism (5) for cleaning the scrapers (4) is provided inside the slag conveyor (1). The scraping mechanism (5) includes a sliding plate (501) fixed on the inner wall of the slag conveyor (1). A fixed frame (502) and an arc-shaped limiting plate (505) are fixedly connected to the top surface of the sliding plate (501). A transmission plate (503) is movably connected inside the fixed frame (502). A scraping plate (504) is fixedly connected to one end of the transmission plate (503).

2. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: The conveyor belt (3) is rotatably connected to the drive roller (2), and the scraper (504) is adapted to the scraper (4).

3. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: One end of the transmission plate (503) is rotatably connected to a rotating cylinder (506), which slides inside the arc-shaped limiting plate (505).

4. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: The top of the fixed frame (502) is fixedly connected to a support rod (507), and the transmission plate (503) has a sliding groove (508) inside, and the support rod (507) slides inside the sliding groove (508).

5. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: A set of telescopic springs (509) is provided above the sliding plate (501), and the two ends of the telescopic springs (509) are fixedly connected to the fixing frame (502) and the transmission plate (503) respectively.

6. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: The inner walls on both sides of the slag conveyor (1) are fixedly connected with protective pads (6), and the protective pads (6) are slidably connected to the conveyor belt (3).

7. The scraper device of a scraper conveyor for thermal power plants according to claim 1, characterized in that: The end of the slag conveyor (1) is fixedly connected to a feed inlet (7), and the bottom surface of the slag conveyor (1) is fixedly connected to a support frame (8).

Images