A wood block separation device for coal mills in power plants

Abstract

This invention discloses a wood block separation device for a coal mill in a power plant, relating to the field of coal mill wood block separation technology. It includes: a conveying unit comprising a conveying pipe, a protective shell disposed at the bottom of the outer diameter of the conveying pipe, and a fixed shell disposed at the bottom of the protective shell; a separation unit comprising a protective component disposed at the bottom of the fixed shell, and a separation component disposed on the protective component; and a storage unit comprising a storage component disposed at the bottom of the protective component, wherein the storage component is connected to the internal separation component. This device automatically separates coal powder and wood blocks, improving production efficiency, reducing maintenance and operating costs, enhancing safety by reducing manual intervention, maintaining a clean working environment, ensuring stable equipment operation unaffected by the wood block content in the coal, simplifying the operation process, reducing energy consumption and environmental pollution, and extending the equipment's service life.

Description

Technical Field

[0001] This invention relates to the field of wood block separation technology in coal mills, and more particularly to a wood block separation device for coal mills in power plants. Background Technology

[0002] In coal-fired power plants, rotary kilns are commonly used to grind coal into powder before sending it into the boiler for combustion. While kilns can easily grind coal into powder, wood chips mixed in with the coal powder cannot be crushed. Therefore, a wood chip separator is installed in the coal powder pipe of the kiln to prevent wood chips from entering the coal powder silo and causing blockages in the pipe.

[0003] Existing wood block separation devices can only separate wood blocks from coal powder into a wood block storage bin. Over time, the increase in the number of wood blocks causes a rapid increase in resistance, which not only affects output but also increases power consumption and makes operation cumbersome. When too many wood blocks are adsorbed, operation becomes difficult and the load needs to be reduced for cleaning. In this case, it is difficult to separate coal powder and wood blocks, making cleaning difficult and causing environmental hygiene problems. In addition, the grid needs to be replaced frequently due to wear, which further increases the complexity of use and maintenance. Summary of the Invention

[0004] In view of the problems existing in the current coal mill wood block separation equipment of power plants, the present invention is proposed.

[0005] Therefore, the present invention provides a wood block separation device for a coal mill in a power plant, the purpose of which is to solve the problem that the resistance increases rapidly as the number of wood blocks increases, which not only affects the output but also increases power consumption and makes the operation cumbersome. When too many wood blocks are adsorbed, the operation becomes difficult and the load needs to be reduced for cleaning. In this case, coal powder and wood blocks are difficult to separate, cleaning work is difficult, and environmental hygiene problems are also caused. In addition, the grid needs to be replaced frequently due to wear, which further increases the complexity of use and maintenance.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a conveying unit, including a conveying pipe, a protective shell disposed at the bottom of the outer diameter of the conveying pipe, and a fixing shell disposed at the bottom of the protective shell;

[0007] The separation unit includes a protective component disposed at the bottom of the fixed shell, and a separation component disposed on the protective component;

[0008] The storage unit includes a storage component disposed at the bottom of the protective component, and the storage component is connected to an internal separate component.

[0009] As a preferred embodiment of the wood block separation device for a power plant coal mill according to the present invention, the protective component includes a protective shell disposed at the bottom of the fixed shell, and a guide ring disposed inside the protective shell.

[0010] As a preferred embodiment of the wood block separation equipment for power plant coal mills according to the present invention, the separation component includes a main tank disposed inside the protective shell, a flow guide filter ring base disposed on the top of the main tank, a conical filter plate disposed on the top of the flow guide filter ring base, and a conical filter plate disposed on the top of the conical filter plate.

[0011] As a preferred embodiment of the wood block separation device for a power plant coal mill described in this invention, the left and right sides of the conical filter plate are rotatably provided with separation filter rings, and the separation filter rings cooperate with the protection components.

[0012] As a preferred embodiment of the wood block separation device for a power plant coal mill according to the present invention, a rotating shaft is provided between the front and rear ends of the separation filter ring, a rotating rod is provided at one end of the rotating shaft, and the rotating rod is rotatably connected to the conical filter plate.

[0013] In a preferred embodiment of the wood block separation device for a power plant coal mill described in this invention, a reset spring is provided at the bottom of the separation filter ring, and the bottom of the reset spring is connected to the base of the guide filter ring.

[0014] As a preferred embodiment of the wood block separation equipment for a power plant coal mill described in this invention, the outer diameter of the main tank is provided with a second guide ring, and the second guide ring cooperates with the first guide ring.

[0015] As a preferred embodiment of the wood block separation equipment for power plant coal mills described in this invention, a conveying pipe is provided at the bottom of the separation component.

[0016] As a preferred embodiment of the wood block separation device for a power plant coal mill according to the present invention, the storage component includes a storage box disposed at the bottom of the protective shell and a windproof door disposed on the storage box.

[0017] As a preferred embodiment of the wood block separation device for a power plant coal mill described in this invention, a handle is provided on one side of the windbreak door.

[0018] The beneficial effects of this invention are as follows: By automatically separating coal powder and wood blocks, production efficiency is improved, maintenance and operating costs are reduced, safety is enhanced by reducing manual intervention, the working environment is kept clean, the equipment operates stably and is not affected by the wood block content in the coal, the operation process is simplified, energy consumption and environmental pollution are reduced, and the service life of the equipment is extended. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the wood block separation equipment for a power plant coal mill according to the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the wood block separation device for a power plant coal mill according to the present invention.

[0022] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the wood block separation device for a power plant coal mill according to the present invention.

[0023] Figure 4 The present invention relates to a wood block separation device for a coal mill in a power plant. Figure 3 A magnified structural diagram at point A.

[0024] Figure 5 This is a schematic cross-sectional view of the wood block separation device for a power plant coal mill according to the present invention.

[0025] Figure 6 The present invention relates to a wood block separation device for a coal mill in a power plant. Figure 5 A magnified structural diagram at point B. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Example 1, referring to Figure 1 - Figure 2 The first embodiment of the present invention provides a wood block separation device for a coal mill in a power plant. The device includes a conveying unit 100, including a conveying pipe 101, a protective shell 102 disposed at the bottom of the outer diameter of the conveying pipe 101, and a fixed shell 103 disposed at the bottom of the protective shell 102. By connecting the conveying pipe 101 to the outlet of the coal mill, coal powder is conveyed to the inside of the protective shell 102 through the conveying pipe 101.

[0031] The separation unit 200 includes a protective component 201 disposed at the bottom of the fixed shell 103 and a separation component 202 disposed on the protective component 201. Coal powder and wood blocks falling into the protective shell 102 fall into the protective component 201 together and onto the separation component 202. The separation component 202 ensures that all the coal powder is filtered and falls into the equipment, while large pieces of wood are not intercepted, thus separating the wood blocks and coal powder.

[0032] The storage unit 300 includes a storage component 301 disposed at the bottom of the protection component 201, and the storage component 301 is connected to the internal separation component 202. The wood blocks separated after filtering can be collected through the storage component 301 at the bottom of the protection component 201 and then processed uniformly.

[0033] The protective component 201 includes a protective shell 201a disposed at the bottom of the fixed shell 103, and a guide ring 201b disposed inside the protective shell 201a. The protective shell 201a and the guide ring 201b inside can perform secondary separation and coordination of the separation component 202 when separating wood blocks and coal powder.

[0034] During operation, when filtering and separating, the conveying pipe 101 is connected to the outlet of the coal mill. After the coal mill completes its work, the wood blocks and coal powder are conveyed through the conveying pipe 101 into the protective shell 102 and the fixed shell 103, and fall into the protective component 201. The separation component 202 on the protective component 201 ensures that all the wood blocks and coal powder fall onto its surface. The conical filter plate 202f separates the wood blocks and coal powder, while the conical filter plate 202d causes the falling wood blocks to vibrate, causing the coal powder to fall into the equipment and further separating the wood blocks. The wood blocks are then intercepted on the surface of the separation filter ring 202e. As too many wood blocks are separated, the separation filter ring 202e, in conjunction with the rotating shaft 202h, begins to rotate to both sides, causing... The wooden blocks on the surface of the separation filter ring 202e begin to tilt and fall into the protective component 201. The guide ring 201b vibrates the falling wooden blocks again to prevent them from carrying residual coal dust. The tilt of the guide ring 201b causes the wooden blocks and coal dust to slide downwards together. The guide ring 202b on the outer diameter of the main tank 202a collects the coal dust that has slid off the guide ring 201b and returns it to the protective shell 201a. Because the diameter of the guide ring 202b is smaller than that of the guide ring 201b, the wooden blocks cannot remain on it, causing them to fall again into the storage component 301 for unified collection. The separated wooden blocks are then processed through the baffle 301b, while the separated coal dust is transported out through the conveying pipe 104.

[0035] This conveying and separation system achieves efficient separation of wood blocks and coal powder from the coal mill discharge through automation technology, ensuring continuous production and reducing manual intervention. The system's ingenious design utilizes conical filter plates for initial separation, and a rotating separation filter ring automatically cleans the wood blocks, preventing equipment blockage and wear. The separation process not only improves energy efficiency and reduces environmental pollution but also lowers overall operating costs by simplifying procedures and reducing maintenance requirements. Furthermore, the system's flexibility and stability allow it to adapt to different operating conditions, and the collected wood blocks can be recycled, further enhancing the system's economic and environmental benefits.

[0036] Example 2, refer to Figure 1 - Figure 6This is the second embodiment of the present invention, which differs from the first embodiment in that: the separation component 202 includes a main tank 202a disposed inside the protective shell 201a, a flow guide filter ring base 202c disposed on the top of the main tank 202a, a second conical filter plate 202d disposed on the top of the flow guide filter ring base 202c, and a first conical filter plate 202f disposed on the top of the second conical filter plate 202d. The flow guide filter ring base 202c and the second conical filter plate 202d, together with the first conical filter plate 202f at the top, perform secondary separation of coal powder and wood blocks, allowing the coal powder to fall into the equipment and then be intercepted by the wood blocks, thereby increasing the separation effect and preventing the coal powder carried by the wood blocks from falling out and causing waste.

[0037] Compared to Embodiment 1, the cone-shaped filter plate 202d is further provided with a separation filter ring 202e on both the left and right sides. The separation filter ring 202e cooperates with the protection component 201. The separation filter ring 202e can separate the coal dust and wood blocks that fall on the surface, so that the wood blocks are intercepted and the coal dust is filtered down.

[0038] Furthermore, a rotating shaft 202h is provided between the front and rear ends of the separating filter ring 202e. A rotating rod 202g is provided at one end of the rotating shaft 202h, and the rotating rod 202g is rotatably connected to the conical filter plate 202d. Through the rotating shaft 202h and the rotating rod 202g, when there are too many wood blocks on the separating filter ring 202e, pressure is used to make the separating filter ring 202e rotate to start conveying the wood blocks.

[0039] Furthermore, a return spring 202l is provided at the bottom of the separating filter ring 202e, and the bottom of the return spring 202l is connected to the guide filter ring base 202c. Through the return spring 202l at the bottom of the separating filter ring 202e, after all the wooden blocks on the separating filter ring 202e are transported to the bottom, the gravity on the surface of the separating filter ring 202e is less than the return spring 202l at the bottom, so that the separating filter ring 202e returns to its original position to continue filtering and separating.

[0040] Furthermore, a guide ring 202b is provided on the outer diameter of the main tank 202a, and the guide ring 202b cooperates with the guide ring 201b. Through the cooperation of the guide ring 202b on the outer diameter of the main tank 202a and the guide ring 201b on the protective shell 201a, the falling wood block can be shaken off and collected again by the vibration generated by its own fall.

[0041] During operation, when separating fallen coal dust and wood blocks, the wood blocks and coal dust processed by the coal mill fall into the protective shell 201a through the connecting conveyor pipe 101. The conical filter plate 202f inside the protective shell 201a vibrates the falling wood blocks, causing the coal dust on the wood blocks to fall off as well. The filtered coal dust is then transported to the main tank 202a through the conical filter plate 202f and the conical filter plate 202d. The wood blocks are intercepted on the surface of the separating filter ring 202e. As more and more wood blocks separate, the separating filter ring 202e begins to rotate to both sides. Through the cooperation of the rotating shaft 202h and the rotating rod 202g on the conical filter plate 202d, the separating filter ring 202e begins to rotate to both sides, causing the wood blocks on the surface of the separating filter ring 202e to tilt and fall onto the guide ring 201b inside the protective shell 201a. The vibration generated by the wood blocks when they fall onto the guide ring 201b further vibrates the wood block body. To prevent coal dust from remaining on the wood blocks, the angle of the guide ring 201b causes any wood blocks and coal dust that fall onto it to slide off onto the guide ring 202b on the outer diameter of the main tank 202a. Because the diameter of the guide ring 202b is smaller than that of the guide ring 201b, the falling coal dust and wood blocks are of different sizes. The coal dust returns to the inside of the main tank 202a through the guide ring 202b, while the smaller diameter of the guide ring 202b prevents any wood blocks from remaining, causing them to slide off again and fall into the storage box 301a at the bottom for collection.

[0042] The carefully designed separation component 202, including the conveying pipe 101, protective shell 102, conical filter plate 202d, conical filter plate 202f, and separation filter ring 202e, achieves efficient separation of wood blocks and coal powder after coal mill processing. This reduces manual intervention, ensuring complete removal of coal powder from the wood blocks through vibration and rotation mechanisms. The difference in diameter between guide ring 201b and guide ring 202b enables the recycling of coal powder and automatic collection of wood blocks. This process not only improves separation efficiency and safety, reduces environmental pollution and equipment wear, but also enhances economic benefits and energy efficiency by reducing maintenance costs and energy consumption. Furthermore, it exhibits strong stability and adaptability, adapting to different material characteristics, achieving resource recycling, promoting environmental friendliness and green production, significantly improving environmental hygiene, and simplifying cleaning.

[0043] The remaining structure is the same as that in Example 1.

[0044] Example 3, referring to Figure 1 - Figure 5This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the storage component 301 includes a storage box 301a disposed at the bottom of the protective shell 201a and a windproof door 301b disposed on the storage box 301a. The separated wood blocks can be collected and processed uniformly through the storage box 301a at the bottom of the protective shell 201a.

[0045] Compared to Embodiment 2, a handle 301c is further provided on one side of the windbreak door 301b, and a conveying pipe 104 is provided at the bottom of the separation component 202. By pulling the handle 301c, the windbreak door 301b is opened to collect the separated wood blocks inside the storage box 301a.

[0046] During operation, after the wood blocks and coal powder are separated, the windbreak door 301b is opened by opening the handle 301c on the storage box 301a. The operator can then clean and recycle the wood blocks separated inside the storage box 301a. This equipment is highly adaptable and will not affect the pulverizing output regardless of the amount of wood blocks in the coal. The automatically separated wood blocks will enter the storage chamber for a second coal-wood block separation. The wood blocks and other materials in the storage chamber can be removed when the pulverizing system is stopped or during operation. The wood blocks can be cleaned twice per operating shift, or once if there are not many wood blocks. Since the wood block storage chamber is large, cleaning the wood blocks has no impact on the operation of the pulverizing system.

[0047] This separation system simplifies the separation process of wood blocks and coal powder through automated operation, achieving efficient cleaning and recycling. It demonstrates strong adaptability, ensuring that the coal powder output is not affected even if the coal contains varying amounts of wood blocks, thus guaranteeing the continuity and stability of production. Operators can easily and flexibly schedule cleaning times according to the amount of wood blocks during shifts, and can safely remove and clean the wood blocks during operation, significantly reducing downtime. In addition, the system design reduces maintenance costs, improves operational safety, optimizes resource utilization, and reduces environmental pollution.

[0048] The remaining structure is the same as that in Example 2.

[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wood block separation device for a coal mill in a power plant, characterized in that: include, The conveying unit (100) includes a conveying pipe (101), a protective shell (102) disposed at the bottom of the outer diameter of the conveying pipe (101), and a fixing shell (103) disposed at the bottom of the protective shell (102). The separation unit (200) includes a protective component (201) disposed at the bottom of the fixed shell (103) and a separation component (202) disposed on the protective component (201). The storage unit (300) includes a storage component (301) disposed at the bottom of the protection component (201), and the storage component (301) is connected to the internal separation component (202); The protective component (201) includes a protective shell (201a) disposed at the bottom of the fixed shell (103) and a guide ring (201b) disposed inside the protective shell (201a). The separation assembly (202) includes a main tank (202a) disposed inside the protective shell (201a), a flow guide filter ring base (202c) disposed on the top of the main tank (202a), a second conical filter plate (202d) disposed on the top of the flow guide filter ring base (202c), and a first conical filter plate (202f) disposed on the top of the second conical filter plate (202d). Separation filter rings (202e) are rotatably provided on both the left and right sides of the conical filter plate (202d), and the separation filter rings (202e) cooperate with the protection component (201). A rotating shaft (202h) is provided between the front and rear ends of the separation filter ring (202e), and a rotating rod (202g) is provided at one end of the rotating shaft (202h), and the rotating rod (202g) is rotatably connected to the second conical filter plate (202d); The bottom of the separation filter ring (202e) is provided with a reset spring (202l), and the bottom of the reset spring (202l) is connected to the guide filter ring base (202c). The outer diameter of the main tank (202a) is provided with a second guide ring (202b), and the second guide ring (202b) cooperates with the first guide ring (201b).

2. The wood block separation equipment for power plant coal mills according to claim 1, characterized in that: The bottom of the separation component (202) is provided with a second delivery pipe (104).

3. The wood block separation equipment for power plant coal mills according to claim 2, characterized in that: The storage component (301) includes a storage box (301a) disposed at the bottom of the protective shell (201a) and a windproof door (301b) disposed on the storage box (301a).

4. The wood block separation equipment for power plant coal mills according to claim 3, characterized in that: A handle (301c) is provided on one side of the windshield (301b).

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