Automatic feeding device for steel ball coal mill

Abstract

The application discloses a kind of steel ball coal mill automatic feeding device, belong to coal mill equipment field, including feed tank, the top surface of the feed tank is equipped with feed inlet, bottom surface is equipped with coal mill communication port.The feed tank inside is located the rotation connection of coal mill communication port directly above unblock device, the unblock device includes the rotation connection of feed tank with rotating shaft, the circumference of the rotating shaft is fixed with several unblock rods.The application is unblocked by unblock device in the process of feeding in coal in the process of coal mill communication port synchronous, effectively solve the problem of coal mill feeding blockage.

Description

Technical Field

[0001] This application belongs to the field of coal mill equipment, specifically relating to an automatic feeding device for a ball mill. Background Technology

[0002] As a core piece of equipment in coal-fired power plants, the reliability of the coal mill's feeding system directly affects pulverizing efficiency and unit safety. In existing technologies, continuous feeding devices commonly suffer from inlet blockage. For example, raw coal contains a certain amount of moisture, which easily forms a sticky coal slurry at the inlet, adhering to the pipe wall and gradually accumulating, leading to a reduction in the flow cross-sectional area and eventually completely blocking the feeding channel.

[0003] Existing solutions mostly focus on post-accident handling, such as manual unblocking, failing to address the blockage problem at its structural design level. Therefore, there is an urgent need for a feeding device that combines self-cleaning and dynamic sealing characteristics to adapt to complex coal quality conditions and improve system reliability. Utility Model Content

[0004] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide an automatic feeding device for a ball mill. This application uses a dredging device linked to the feeding to synchronously dredge the mill's connection port during the coal feeding process, effectively solving the problem of mill feed blockage.

[0005] The technical solution adopted by this application to solve its existing problems is:

[0006] An automatic feeding device for a ball mill includes a feeding box, wherein the top surface of the feeding box is provided with a feeding port and the bottom surface is provided with a connection port for the ball mill.

[0007] Inside the feed box, directly above the coal mill connection port, is a rotatably connected unblocking device. The unblocking device includes a rotating shaft rotatably connected to the feed box, and several unblocking rods are fixed on the circumference of the rotating shaft.

[0008] Preferably, the unblocking rod is arranged radially along the pivot.

[0009] Preferably, the unblocking rod is a bent rod.

[0010] Preferably, a drive device is fixed to the outside of the feed box, and the drive device drives the rotating shaft to rotate.

[0011] Preferably, the feed inlet of the feed box and the connection port of the coal mill are arranged alternately.

[0012] The feed box is equipped with a conveying device, with the two ends of the conveying device arranged at the feed inlet and the coal mill connection port, respectively.

[0013] Preferably, the conveying device is a conveyor belt, and the main shaft of the conveyor belt drive wheel passes through the outside of the feed box and is connected to the drive device.

[0014] Preferably, the drive device is a motor with a reduction gear, and the output shaft of the drive device is connected to the drive wheel of the material conveying device.

[0015] A drive wheel is coaxially fixed on the output shaft of the drive device, and a driven wheel is coaxially fixed on the rotating shaft located outside the feed box. The drive wheel drives the driven wheel to rotate.

[0016] Preferably, both the driving wheel and the driven wheel are sprockets, and the driving wheel and the driven wheel are connected by a chain.

[0017] Preferably, the feed box is provided with an inspection port directly above the coal mill connection port, and the inspection port is covered with a flap.

[0018] Preferably, the flap is provided with a negative pressure suction pipe that is connected to the inside of the feed box, and the end of the negative pressure suction pipe is connected to the dust collection bag through a suction pump.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] (1) The dredging device linked with the conveying device dredges the coal mill connection during the feeding process to ensure smooth feeding and prevent blockage.

[0021] (2) Connect a negative pressure suction dust removal system to the flap for maintenance. The flap is located above the coal mill connection port and can suck and collect the dust generated during the coal falling process to protect the working environment. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a first structural diagram of an automatic feeding device for a ball mill according to this application.

[0024] Figure 2 This is a second structural diagram of an automatic feeding device for a ball mill according to this application.

[0025] Figure 3 This is a cross-sectional view of an automatic feeding device for a ball mill according to this application.

[0026] Figure 4 for Figure 3 Side view.

[0027] In the diagram: 1-feed box, 101-guide plate, 102-feed inlet, 103-coal mill connection port, 104-inspection port, 2-material conveying device, 3-drive device, 301-drive wheel, 4-chain, 5-passive wheel, 6-shaft, 7-draining rod, 8-flip plate, 9-negative pressure suction pipe. Detailed Implementation

[0028] The attached figure shows the preferred embodiment of the automatic feeding device for a ball mill. The following is a more detailed description of this application in conjunction with the attached figure.

[0029] Depend on Figures 1 to 4 As shown, an automatic feeding device for a ball mill includes a feeding box 1, wherein the top surface of the feeding box 1 is provided with a feeding port 102 and the bottom surface is provided with a mill connection port 103.

[0030] Inside the feed box 1, directly above the coal mill connection port 103, there is a rotatably connected unblocking device. The unblocking device includes a rotating shaft 6 rotatably connected to the feed box 1, and several unblocking rods 7 are fixed on the circumferential surface of the rotating shaft 6.

[0031] To optimize the unblocking effect, the unblocking rod 7 is arranged radially along the rotating shaft 6. The unblocking rod 7 is a curved rod and can be arranged in an alternating manner.

[0032] The feed box 1 is externally fixed with a drive device 3, which drives the rotating shaft 6 to rotate.

[0033] In order to achieve interconnection between the movement of the unblocking device and the feeding, in this embodiment, the feed inlet 102 of the feed box 1 and the coal mill connection port 103 are arranged alternately.

[0034] The feed box 1 is equipped with a conveying device 2, with its two ends respectively arranged at the feed inlet 102 and the coal mill connection port 103. The conveying device 2 is a conveyor belt, and the main shaft of the conveyor belt drive wheel passes through to the outside of the feed box 1 and is connected to the drive device 3.

[0035] The drive device 3 is a motor with a reduction mechanism, and the output shaft of the drive device 3 is connected to the drive wheel of the material conveying device 2.

[0036] A drive wheel 301 is coaxially fixed on the output shaft of the drive device 3, and a driven wheel 5 is coaxially fixed on the rotating shaft 6 located outside the feed box 1. The drive wheel 301 drives the driven wheel 5 to rotate.

[0037] To facilitate arrangement and improve connection reliability, both the driving wheel 301 and the driven wheel 5 are sprockets, and the driving wheel 301 and the driven wheel 5 are connected by a chain 4. Compared to a timing belt, the chain 4 connection eliminates the need for a tensioner.

[0038] During feeding, coal falls through the large open feed inlet 102 onto the conveying device 2, and is then transported by conveyor belt to the coal mill connection port 103, which is connected to the coal mill working box. From there, it falls into the coal mill. The bottom surface of the feed box 1, directly below the conveying device 2, is a guide plate 101. One end of the guide plate 101 at the feed inlet 102 is higher than the other end at the coal mill connection port 103. The coal powder falling from the conveying device 2 is guided into the coal mill connection port 103 through the guide plate 101.

[0039] The feed box 1 is located directly above the coal mill connection port 103 and has an inspection port 104. The inspection port 104 is covered with a flap 8, which can be opened to inspect the unblocking device.

[0040] The flap 8 is equipped with a negative pressure suction pipe 9 that is connected to the inside of the feed box 1. The end of the negative pressure suction pipe 9 is connected to the dust collection bag through a suction pump, which can collect the dust generated during the coal falling process and protect the working environment.

[0041] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An automatic feeding device for a ball mill coal mill, characterized in that: Includes a feed box (1), wherein the top surface of the feed box (1) is provided with a feed inlet (102) and the bottom surface is provided with a coal mill connection port (103); Inside the feed box (1), a dredging device is rotatably connected directly above the coal mill connection port (103). The dredging device includes a rotating shaft (6) rotatably connected to the feed box (1), and several dredging rods (7) are fixed on the circumferential surface of the rotating shaft (6).

2. The automatic feeding device for a ball mill according to claim 1, characterized in that: The unblocking rod (7) is arranged radially along the rotating shaft (6).

3. The automatic feeding device for a ball mill according to claim 2, characterized in that: The aforementioned unblocking rod (7) is a bent rod.

4. An automatic feeding device for a ball mill according to claim 1, 2, or 3, characterized in that: The feed box (1) is externally fixed with a drive device (3), which drives the rotating shaft (6) to rotate.

5. The automatic feeding device for a ball mill according to claim 4, characterized in that: The feed inlet (102) of the feed box (1) and the coal mill connection port (103) are arranged alternately; The feed box (1) is equipped with a conveying device (2), and the two ends of the conveying device (2) are respectively arranged at the feed inlet (102) and the coal mill connection port (103).

6. The automatic feeding device for a ball mill according to claim 5, characterized in that: The material conveying device (2) adopts a conveyor belt, and the main shaft of the conveyor belt drive wheel passes through the outside of the material box (1) and is connected to the drive device (3).

7. An automatic feeding device for a ball mill according to claim 6, characterized in that: The drive device (3) is a motor with a reduction mechanism, and the output shaft of the drive device (3) is connected to the drive wheel of the material conveying device (2); A drive wheel (301) is coaxially fixed on the output shaft of the drive device (3), and a driven wheel (5) is coaxially fixed on the rotating shaft (6) located outside the feed box (1). The drive wheel (301) drives the driven wheel (5) to rotate.

8. The automatic feeding device for a ball mill according to claim 7, characterized in that: Both the driving wheel (301) and the driven wheel (5) are sprockets, and the driving wheel (301) and the driven wheel (5) are connected by a chain (4).

9. An automatic feeding device for a ball mill according to any one of claims 5 to 8, characterized in that: The feed box (1) is located directly above the coal mill connection port (103) and has an inspection port (104). The inspection port (104) is covered with a flap (8).

10. An automatic feeding device for a ball mill according to claim 9, characterized in that: The flap (8) is provided with a negative pressure suction pipe (9) that is connected to the inside of the feed box (1). The end of the negative pressure suction pipe (9) is connected to the dust removal bag through a suction pump.

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