A rotary fiber separation hopper for a pulverized coal collector

Abstract

The present invention discloses a rotary fiber separation hopper for a pulverized coal collector, comprising a hopper and a support frame. The hopper is designed in three sections independently, the upper hopper and the lower hopper are designed independently and are fixedly arranged on the support frame respectively, and the upper and lower openings of the middle hopper are rigidly connected to the upper hopper and the lower hopper respectively. A rotating shaft is arranged in the middle of the middle hopper, and the two ends of the rotating shaft are inserted into through holes symmetrically arranged on the outer wall of the middle hopper. One end of the rotating shaft is connected to a driving motor for rotation.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal equipment design, and in particular to a rotary fiber separation hopper for a pulverized coal collector. Background Art

[0002] With the rise of emerging energy, deep processing of coal as raw material is imperative, and dry coal powder recovery is an indispensable process equipment. It is crucial to the entire coal-to-gas process, requiring the equipment to be efficient, explosion-proof, pressure-resistant, fire-proof and stable.

[0003] After the lump coal is ground into coal powder by the coal mill, the coal powder and gas are sent to the pulverized coal collector by pneumatic conveying. The pulverized coal collector separates the coal powder from the gas and loads it into the storage tank through the conveying device. However, during the transportation and storage of the lump coal, there are fiber impurities such as plastic products for packaging, canvas for storage covering and garbage. Therefore, the fiber impurities must be filtered and separated by separation equipment before being loaded into the storage tank.

[0004] From top to bottom, the fiber filter equipment is in the process of collecting dry coal powder into the storage tank. The equipment occupies one layer of the frame (the frame is about 30m x 20m x 5m high). The manufacturing cost of the frame is greatly increased. In addition, the maintenance cost of the equipment is high, and parts need to be replaced frequently to ensure the reliable operation of the equipment. This makes the entire process unable to operate for a long time.

[0005] When the hopper passes through each layer of the frame, it uses a multi-point support form. At this time, the coal powder is in a high temperature state, and the hopper generates thermal expansion between the supports of each layer of the frame. At this time, the ash hopper is over-positioned and has internal stress. There are long-term safety hazards. Summary of the invention

[0006] The purpose of the present invention is to reduce the structure of existing equipment to reduce the project cost and reduce the operation and maintenance costs.

[0007] The rotary fiber separation hopper of the pulverized coal collector comprises a hopper and a support frame. The hopper is designed as three independent sections. The upper hopper and the lower hopper are designed independently and are fixed on the support frame respectively. The upper and lower openings of the middle hopper are rigidly connected to the upper hopper and the lower hopper respectively.

[0008] A rotating shaft is arranged in the middle of the middle hopper, and two ends of the rotating shaft are inserted into through holes symmetrically arranged on the outer wall of the middle hopper. One end of the rotating shaft is connected to a driving motor for rotation.

[0009] A plurality of purlins are arranged in parallel on the rotating shaft and are radially arranged with the rotating shaft as the center, forming a needle roller-shaped filtering wheel.

[0010] Steel hooks of different lengths are arranged on the needle roller.

[0011] A screen is also obliquely arranged at the lower part of the middle hopper. The screen is composed of a plurality of purlins parallel to the rotation direction of the filter roller. Steel hooks are arranged on the purlins. The steel hooks are staggered with the steel hooks on the purlins of the filter roller.

[0012] The filter roller and screen set in the middle hopper form a filter unit. When the pulverized coal falls naturally and passes through the rotating filter roller, the impurities in it are naturally entangled and filtered out by the steel hooks on the roller.

[0013] A detection port is arranged on the side wall of the middle hopper, and the detection port is arranged on the lower side of the inclined screen.

[0014] The filter roller forms a vertical filter area, and the screen forms a horizontal filter area. By sequentially designing the vertical filter area and the horizontal filter area on the material flow path, the filter space is increased and the filter efficiency is improved. In addition, by building a filter unit in the hopper, the cost of the entire pulverized coal collection device can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0016] Figure 1 Schematic diagram of the structure of the existing equipment

[0017] Figure 2 It is a schematic diagram of the structure of the present invention.

[0018] Figure 3 It is a partial enlarged view of the present invention.

[0019] 1-upper hopper 2-middle hopper 3-lower hopper 4-rotating shaft 5-through hole 6-detection port 7-purlin 8-screen.

[0020] As shown in the figure, the rotating fiber separation hopper of the pulverized coal collector includes a hopper and a support frame. The hopper is designed as three independent sections. The upper hopper and the lower hopper are independently designed and fixed on the support frame respectively. The upper and lower openings of the middle hopper are rigidly connected to the upper hopper and the lower hopper respectively.

[0021] A rotating shaft is arranged in the middle of the middle hopper, and two ends of the rotating shaft are inserted into through holes symmetrically arranged on the outer wall of the middle hopper. One end of the rotating shaft is connected to a driving motor for rotation.

[0022] A plurality of purlins are arranged in parallel on the rotating shaft in a radial arrangement with the rotating shaft as the center, forming a needle roller-shaped filter roller. Steel hooks of different lengths are arranged on the needle roller. Pulverized coal is poured into the hopper from the feeding port above the hopper. During the falling process of the pulverized coal, it passes through the rotating filter roller from top to bottom. The purlins arranged radially on the rotating shaft of the filter roller pass through the material. The steel hooks arranged on the purlins hook the debris in the material and wrap it around the purlins. Even if the purlins above the filter roller fail to hook the debris, the purlins below the filter roller can easily filter out the debris in the material. In addition, as the rotating shaft rotates slowly, the purlins are constantly stirred in the material, and the steel hooks of different lengths on the purlins further increase the possibility of the debris being hooked and filtered out.

[0023] A screen is also obliquely arranged at the lower part of the middle hopper. The screen is composed of a number of purlins parallel to the rotation direction of the filter roller. The purlins are provided with steel hooks, and the steel hooks are staggered with the steel hooks on the filter roller purlins. The purlins arranged parallel to the rotating shaft constitute the vertical filter area, and the screen below the filter roller constitutes the horizontal filter area. Since the funnel is conical, some materials will inevitably slide from the blind area between the vertical filter area and the side wall of the hopper. At this time, the horizontal filter area can effectively intercept the materials from the blind area of ​​the vertical filter area. Since the steel hooks of the horizontal filter area and the vertical filter area are staggered, the purlins of the filter roller can reach below the plane where the screen is located, hook off the debris trapped on the screen, and prevent the accumulation of debris on the screen from hindering the material from falling.

[0024] The filter roller and screen set in the middle hopper form a filter unit. When the pulverized coal falls naturally and passes through the rotating filter roller, the impurities in it are naturally entangled and filtered out by the steel hooks on the roller.

[0025] The side wall of the middle hopper is provided with a detection port, which is located on the lower side of the inclined screen. After the system has been running for a period of time, the operator can open the detection port to clean up the debris intercepted and filtered by the filter unit.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary fiber separation hopper for a pulverized coal collector, comprising a hopper and a support frame, wherein the hopper is independently designed in three sections, wherein the upper hopper and the lower hopper are independently designed and are fixedly arranged on the support frame respectively, and the upper and lower openings of the middle hopper are rigidly connected to the upper hopper and the lower hopper respectively; A rotating shaft is provided in the middle of the middle hopper, and both ends of the rotating shaft are inserted into through holes symmetrically arranged on the outer wall of the middle hopper; one end of the rotating shaft is connected to a driving motor for rotation; a plurality of purlins are arranged in parallel on the rotating shaft and are radially arranged with the rotating shaft as the center, forming a needle roller-shaped filter roller; steel hooks of different lengths are arranged on the needle roller; the pulverized coal is poured into the hopper from the feeding port above the hopper, and in the process of falling, the pulverized coal passes through the rotating filter roller from top to bottom, and the purlins radially arranged on the rotating shaft of the filter roller pass through the material, and the purlins are The steel hooks arranged on the purlins hook the debris in the material and wrap it around the purlins; the purlins arranged parallel to the rotating shaft constitute the vertical filtering area, and the screen under the filter roller constitutes the horizontal filtering area. Part of the material slides down from the blind area between the vertical filtering area and the side wall of the hopper, and the horizontal filtering area intercepts the material from the blind area of ​​the vertical filtering area; the steel hooks in the horizontal filtering area and the vertical filtering area are arranged alternately, and the purlins of the filter roller extend below the plane where the screen is located to hook away the debris trapped on the screen to prevent the accumulation of debris on the screen from hindering the material from falling; A screen is also obliquely arranged at the lower part of the middle hopper, and the screen is composed of a number of purlins parallel to the rotation direction of the filter roller. The purlins are provided with steel hooks, and the steel hooks are staggered with the steel hooks on the filter roller purlins; the filter roller and the screen arranged in the middle hopper form a filtering unit, and the impurities in the pulverized coal can be naturally entangled and filtered out by the steel hooks on the roller when the pulverized coal falls naturally and passes through the rotating filter roller; a detection port is provided on the side wall of the middle hopper, and the detection port is arranged on the lower side of the inclined screen.

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