Wood block separation equipment for coal mill of power plant

Abstract

The invention discloses a power plant coal mill wood block separation device, and relates to the technical field of coal mill wood block separation, the power plant coal mill wood block separation device comprises a conveying unit comprising a first conveying pipe, a protective shell arranged at the outer diameter bottom of the first conveying pipe, and a fixed shell arranged at the bottom of the protective shell; the separation unit comprises a protection assembly arranged at the bottom of the fixed shell and a separation assembly arranged on the protection assembly; and the storage unit comprises a storage assembly arranged at the bottom of the protection assembly, and the storage assembly is connected with an internal separation assembly. By means of the device, coal powder and wood blocks are automatically separated, the production efficiency is improved, the maintenance and operation cost is reduced, the safety is enhanced by reducing manual intervention, meanwhile, the cleanliness of the working environment is kept, the device operates stably, the device is not affected by the content of the wood blocks in coal, the operation process is simplified, and energy consumption and environmental pollution are reduced; and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of coal mill wood block separation, in particular to a coal mill wood block separation device for a power plant. Background Art

[0002] In coal-fired power plants, drum pulverizers are often used to grind coal blocks into powder, which is then fed into boilers for combustion. Coal pulverizers can easily grind coal blocks into powder, but wood blocks mixed in the coal powder cannot be crushed. For this reason, a wood block separation device is installed in the coal powder pipe of the pulverizer to prevent wood blocks from entering the coal powder bin and blocking the pipeline.

[0003] The wood block separation device of the prior art can only separate the wood blocks from the coal powder into the wood block storage bin, and as time goes by, the increase in the number of wood blocks causes the resistance to increase rapidly, which not only affects the output, but also increases the power consumption and makes the operation cumbersome. When there are too many adsorbed wood blocks, the operation is difficult to carry out and the load needs to be reduced for cleaning. In this case, the coal powder is difficult to separate from the wood blocks, and the cleaning work is difficult, which also causes environmental sanitation problems. In addition, the grille 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 above problems existing in the existing wood block separation equipment of the coal mill in the power plant, 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 increase in the number of wood blocks leads to a rapid increase in resistance, which not only affects the output, but also increases power consumption and makes the operation complicated. When there are too many adsorbed wood blocks, the operation is difficult to carry out and the load needs to be reduced for cleaning. In this case, the coal powder is difficult to separate from the wood blocks, and the cleaning work is difficult, which also causes environmental sanitation problems. In addition, the grille needs to be replaced frequently due to wear, which further increases the complexity of use and maintenance.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a conveying unit, comprising a conveying pipe 1, a protective shell arranged at the bottom of the outer diameter of the conveying pipe 1, and a fixed shell arranged at the bottom of the protective shell;

[0007] A separation unit, comprising a protection component disposed at the bottom of the fixed shell, and a separation component disposed on the protection component;

[0008] The storage unit comprises a storage component arranged at the bottom of the protection component, and the storage component is connected to the internal separation component.

[0009] As a preferred solution of the wood block separation device for the coal mill in a power plant according to the present invention, the protection component includes a protection shell arranged at the bottom of the fixed shell, and a guide ring 1 arranged inside the protection shell.

[0010] As a preferred solution of the wood block separation equipment of the power plant coal mill described in the present invention, the separation component includes a main tank body arranged inside the protective shell, a guide filter ring base arranged on the top of the main tank body, a conical filter plate arranged on the top of the guide filter ring base, and a conical filter plate arranged on the top of the conical filter plate.

[0011] As a preferred solution of the wood block separation device for the coal mill in a power plant of the present invention, separation filter rings are rotatably provided on both sides of the conical filter plate, and the separation filter rings cooperate with the protection component.

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

[0013] As a preferred solution of the wood block separation device for coal mill in power plant of the present invention, a reset spring is arranged 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 solution of the wood block separation device for the coal mill in a power plant of the present invention, a second guide ring is arranged on the outer diameter of the main tank body, and the second guide ring cooperates with the first guide ring.

[0015] As a preferred solution of the wood block separation device for coal mill in power plant described in the present invention, a second conveying pipe is provided at the bottom of the separation component.

[0016] As a preferred solution of the wood block separation device for a coal mill in a power plant according to the present invention, the storage assembly comprises a storage box arranged at the bottom of the protective shell, and a windshield door arranged on the storage box.

[0017] As a preferred solution of the wood block separation device for the coal mill in a power plant of the present invention, a handle is provided on one side of the air shield door.

[0018] The beneficial effects of the present invention are as follows: the coal powder and wood blocks are automatically separated by the device, which improves production efficiency and reduces maintenance and operating costs. It enhances safety by reducing manual intervention while maintaining a clean working environment. The equipment operates stably and is not affected by the wood block content in the coal. The operating process is simplified, energy consumption and environmental pollution are reduced, and the service life of the equipment is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

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

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

[0023] Figure 4 The invention is a power plant coal mill wood block separation device Figure 3 A is an enlarged structural diagram of FIG.

[0024] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the wood block separation device of the coal mill in a power plant according to the present invention.

[0025] Figure 6 The invention is a power plant coal mill wood block separation device Figure 5 Schematic diagram of the enlarged structure at B. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1, reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides a wood block separation device for a coal mill in a power plant, the device comprising: a conveying unit 100, comprising a conveying pipe 101, a protective shell 102 arranged at the bottom of the outer diameter of the conveying pipe 101, and a fixed shell 103 arranged at the bottom of the protective shell 102, by connecting the conveying pipe 101 to the outlet of the coal mill, the coal powder is conveyed to the inside of the protective shell 102 through the conveying pipe 101;

[0031] The separation unit 200 includes a protection component 201 disposed at the bottom of the fixed shell 103, and a separation component 202 disposed on the protection component 201. The coal powder and the wood blocks falling into the protective shell 102 fall into the protection component 201 together and fall onto the separation component 202. The separation component 202 allows all the coal powder to be filtered and fall into the equipment, while the large wood blocks are not intercepted, thereby separating the wood blocks from the 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 storage component 301 at the bottom of the protection component 201 can collect the wood blocks separated by filtering and then process them uniformly.

[0033] Among them, the protection component 201 includes a protection shell 201a arranged at the bottom of the fixed shell 103, and a guide ring 201b arranged inside the protection shell 201a. The protection shell 201a and the internal guide ring 201b can be used to perform secondary separation and coordination of the separation component 202 when separating wood blocks and coal powder.

[0034] During use, when filtering and separating, by connecting the conveying pipe 101 to the discharge port of the coal mill, after the coal mill completes its work, the wood blocks and coal powder are conveyed to the inside of the protective shell 102 and the fixed shell 103 through the conveying pipe 101, and fall into the inside of the protective component 201. Through the separation component 202 on the protective component 201, the wood blocks and coal powder can all fall on the surface of the separation component 202, and the wood blocks and coal powder are separated once through the conical filter plate 1 202f. At the same time, the conical filter plate 202d makes the fallen wood blocks vibrate, causing the coal powder to fall into the equipment, thereby separating the wood blocks, so that the wood blocks are intercepted on the surface of the separation filter ring 202e. As too many wood blocks are separated, the separation filter ring 202e starts to rotate to both sides with the cooperation of the rotating shaft 202h, so that The wood block on the surface of the separation filter ring 202e begins to tilt and falls into the protection component 201, and the falling wood block is vibrated again by the guide ring 1 201b to prevent the wood block itself from carrying residual coal powder and vibrating and falling. The tilt of the guide ring 1 201b makes the wood block and the coal powder slide downward together, and the guide ring 202b on the outer diameter of the main tank body 202a can collect the coal powder sliding off the guide ring 1 201b, and then return to the protection shell 201a. Because the diameter of the guide ring 202b is smaller than the guide ring 1 201b, the wood block cannot remain on it, causing the wood block to fall again and fall into the storage component 301 for unified collection. The separated wood blocks inside are processed by the wind shield door 301b, and the separated coal powder is transported out through the conveying pipe 2 104.

[0035] The conveying and separation system realizes the efficient separation of wood blocks and coal powder in the coal mill discharge through automation technology, ensuring production continuity and reducing manual intervention. The system is cleverly designed, using conical filter plates and conical filter plates for preliminary separation, and automatically cleaning wood blocks through rotating separation filter rings, preventing equipment clogging and wear. The separation process of wood blocks and coal powder not only improves energy utilization efficiency and reduces environmental pollution, but also reduces overall operating costs by simplifying operating procedures and reducing maintenance requirements. In addition, the flexibility and stability of the system enable it to adapt to different working conditions, and the collected wood blocks can be recycled, further improving the economic and environmental benefits of the system.

[0036] Example 2, reference Figure 1 - Figure 6, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a separation component 202 includes a main tank body 202a arranged inside a protective shell 201a, a guide filter ring base 202c arranged on the top of the main tank body 202a, a conical filter plate 2 202d arranged on the top of the guide filter ring base 202c, and a conical filter plate 1 202f arranged on the top of the conical filter plate 202d. The coal powder and the wood block are separated for the second time through the guide filter ring base 202c, the conical filter plate 2 202d and the conical filter plate 1 202f on the top, and the coal powder can fall into the interior of the equipment, and then the wood block intercepts it, so that the separation effect can be increased, and the coal powder carried by the wood block itself can be prevented from falling out and causing waste.

[0037] Compared with Example 1, further, separation filter rings 202e are rotatably provided on both sides of the conical filter plate 202d, and the separation filter rings 202e cooperate with the protection component 201. The separation filter rings 202e can separate the coal powder and wood blocks that fall on the surface again so that the wood blocks are intercepted and the coal powder is filtered out.

[0038] Furthermore, a rotating shaft 202h is provided between the front and rear ends of the separation 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. When there are too many wood blocks on the separation filter ring 202e, the separation filter ring 202e can be rotated by pressure to start transporting the wood blocks.

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

[0040] Furthermore, a guide ring 202b is provided on the outer diameter of the main tank body 202a, and the guide ring 202b cooperates with the guide ring 1 201b. Through the cooperation of the guide ring 202b on the outer diameter of the main tank body 202a and the guide ring 1 201b on the protective shell 201a, the fallen wood block can be shaken off and collected again through the vibration generated by its own falling.

[0041] During use, when the fallen coal powder and wood blocks are separated, the wood blocks and coal powder processed by the coal mill are made to fall into the inside of the protective shell 201a by connecting the conveying pipe 101. The conical filter plate 202f inside the protective shell 201a vibrates the wood blocks when they fall, so that the coal powder on the wood blocks also falls out. The filtered coal powder is conveyed to the inside of the main tank 202a by the conical filter plate 1 202f and the conical filter plate 2 202d, and the wood blocks are intercepted on the surface of the separation filter ring 202e. As more and more wooden blocks are separated, the separation 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 separation filter ring 202e begins to rotate to both sides, causing the wooden blocks on the surface of the separation filter ring 202e to tilt and begin to fall onto the guide ring 1 201b inside the protective shell 201a. When the wooden blocks fall onto the guide ring 1 201b, the vibrations generated by the wooden blocks themselves vibrate the wooden block bodies again. In order to prevent coal powder from remaining on the wood block itself, the angle of guide ring 1 201b is used to make the wood block and coal powder that fall on it slide down again and slide onto guide ring 2 202b on the outer diameter of main tank body 202a. Since the diameter of guide ring 202b is smaller than that of guide ring 1 201b, the sizes of the coal powder and wood block that fall are different. The coal powder returns to the inside of main tank body 202a through guide ring 202b. However, since the diameter of guide ring 202b is small, the wood block itself cannot remain, causing it to slide down again and slide into the storage box 301a at the bottom for unified collection.

[0042] Through the carefully designed components of the separation component 202, such as the conveying pipe 101, the protective shell 102, the conical filter plate 202d, the conical filter plate 202f and the separation filter ring 202e, the efficient separation of the wood blocks and the coal powder after the coal mill processing is achieved, and the human intervention is reduced. The vibration and rotation mechanism ensures that the coal powder on the wood blocks is completely detached, and the diameter difference between the guide ring 1 201b and the guide ring 2 202b is used to realize the recycling of coal powder and the automatic collection of wood blocks. This process not only improves the separation efficiency and safety, reduces environmental pollution and equipment wear, but also improves the economic benefits and energy utilization efficiency by reducing maintenance costs and energy consumption. At the same time, it has strong stability and adaptability, can adapt to different material characteristics, realizes the recycling of resources, is environmentally friendly, and green production greatly improves environmental sanitation and simplifies cleaning.

[0043] The remaining structures are the same as those of Example 1.

[0044] Example 3, reference Figure 1 - Figure 5, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the storage component 301 includes a storage box 301a arranged at the bottom of the protective shell 201a, and a windshield door 301b arranged on the storage box 301a. The separated wood blocks can be uniformly collected and processed through the storage box 301a at the bottom of the protective shell 201a.

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

[0046] During use, after the wood blocks and coal powder are separated, the wind shield door 301b is opened by opening the handle 301c on the storage box 301a, and the operator can clean and recycle the separated wood blocks inside the storage box 301a. In addition, due to the strong adaptability of the equipment, no matter how many wood blocks are in the coal, it will not affect the powder making output. The automatically separated wood blocks enter the storage chamber by themselves for the second separation of coal and wood blocks. The wood blocks and other items in the storage chamber can be taken out when the powder making system is stopped or during operation. The time for cleaning the wood blocks can be twice in one operating shift, or once when there are not many wood blocks. Since the wood block storage chamber is large, cleaning the wood blocks has no effect on the operation of the powder making system.

[0047] The separation system simplifies the separation process of wood blocks and coal powder through automated operation, realizes efficient cleaning and recycling, and shows strong adaptability. Even if the coal contains different amounts of wood blocks, it will not affect the powder making output, ensuring the continuity and stability of production. Operators can conveniently arrange the cleaning time according to the number of wood blocks during the operating shift, 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 of Example 2.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered 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 is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in 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 by: include, The conveying unit (100) comprises a conveying pipe (101), a protective shell (102) arranged at the bottom of the outer diameter of the conveying pipe (101), and a fixed shell (103) arranged at the bottom of the protective shell (102); A separation unit (200) comprising a protection component (201) arranged at the bottom of the fixed shell (103), and a separation component (202) arranged on the protection component (201); The storage unit (300) comprises a storage component (301) arranged at the bottom of the protection component (201), and the storage component (301) is connected to the internal separation component (202).

2. The wood block separation equipment for coal mill in power plant according to claim 1, characterized in that: The protection component (201) comprises a protection shell (201a) arranged at the bottom of the fixed shell (103), and a guide ring (201b) arranged inside the protection shell (201a).

3. The wood block separation equipment for coal mill in power plant according to claim 2, characterized in that: The separation assembly (202) comprises a main tank body (202a) arranged inside the protective shell (201a), a guide filter ring base (202c) arranged on the top of the main tank body (202a), a conical filter plate 2 (202d) arranged on the top of the guide filter ring base (202c), and a conical filter plate 1 (202f) arranged on the top of the conical filter plate 2 (202d).

4. The wood block separation device for coal mill in power plant according to claim 3, characterized in that: Separation filter rings (202e) are rotatably provided on both left and right sides of the second conical filter plate (202d), and the separation filter rings (202e) cooperate with the protection component (201).

5. The wood block separation device for coal mill in power plant according to claim 4, characterized in that: A rotating shaft (202h) is provided between the front and rear ends of the separation 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 second conical filter plate (202d).

6. The wood block separation device for coal mill in power plant according to claim 5, characterized in that: A return spring (202l) is provided at the bottom of the separation filter ring (202e), and the bottom of the return spring (202l) is connected to the guide filter ring base (202c).

7. The wood block separation device for coal mill in power plant according to claim 6, characterized in that: The outer diameter of the main tank body (202a) is provided with a second guide ring (202b), and the second guide ring (202b) cooperates with the first guide ring (201b).

8. The wood block separation equipment for coal mill in power plant according to claim 7, characterized in that: A second conveying pipe (104) is provided at the bottom of the separation component (202).

9. The wood block separation device for coal mill in power plant according to claim 8, characterized in that: The storage assembly (301) comprises a storage box (301a) arranged at the bottom of the protective shell (201a), and a windshield door (301b) arranged on the storage box (301a).

10. The wood block separation device for coal mill in power plant according to claim 9, characterized in that: A handle (301c) is provided on one side of the wind shield door (301b).

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