Coal distributor device of medium-speed coal mill
By designing the medium-speed coal grinder coal divider device, the umbrella coal divider body and welding layer are used to solve the problem of easy damage to the conical coal divider, and the working efficiency of the coal grinder and the use of the coal divider are improved. Lifespan and reduce safety risks and labor costs.
Patent Information
- Application Number
- CN202420910473.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing conical coal divider of coal mill is easily damaged under the gravity of the coal free fall, affecting the coal splitting effect, reducing the working efficiency of the coal mill, and inconvenient for maintenance operations after damage, increasing safety risks.
A medium-speed coal grinder coal divider device is designed, using an umbrella fertilizer body and covering the welding layer on its outer wall. The bottom of the medium-speed coal grinder coal grinder coal grinder body is welded to connect the upper iron plate of the central cylinder to form a Disassemble the structure.
It improves the working efficiency of the coal mill and the service life of the coal divider, reduces the frequency and time of maintenance, reduces safety risks, and saves labor costs.
Smart Images
Figure CN222469227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal separation in a medium-speed coal mill, in particular to a coal separator device for a medium-speed coal mill. Background Art
[0002] With the proposal of sustainable development, it is necessary to change the economic difficulties of thermal power plants. An important measure is to improve the economic operation efficiency of boilers, strengthen the maintenance and transformation of boiler equipment, and improve the basic conditions for energy-saving, economical, environmentally friendly and stable operation of boilers.
[0003] The existing conical coal separator of the coal mill is very easy to be damaged under the gravity of the free fall of coal, which affects the coal separation effect and makes the coal powder not evenly distributed on the grinding disc, thereby reducing the working efficiency of the coal mill. Secondly, when the conical coal separator of the coal mill is damaged, the coal powder will enter the central cylinder of the grinding disc, causing great inconvenience to the replacement of the reducer and the maintenance of the grinding disc, thus affecting the maintenance efficiency. At the same time, the original conical coal separator has a single apex, uneven force, and unobvious coal separation effect. Next, the internal maintenance work of the coal mill is a confined space operation with a harsh working environment, poor internal air, excessive coal powder concentration, and damaged coal separator. Electric and fire welding are required for its repair, which increases safety risks.
[0004] Therefore, in order to solve the above problems, a coal separator device for a medium-speed coal mill is proposed. Utility Model Content
[0005] In order to make up for the deficiencies of the existing technology, the problem that the existing conical coal separator of the coal mill is easily damaged under the gravity of the free fall of coal, affecting the coal separation effect and reducing the working efficiency of the coal mill is solved; the problem that coal powder enters the central cylinder of the grinding disc, causing great inconvenience in replacing the reducer and grinding disc maintenance work, thereby affecting the maintenance efficiency is solved; the problem that the conical coal separator has a single vertex, uneven force and unclear coal separation effect is solved; the problem that the conical coal separator is damaged and the safety risk is increased during its repair is solved.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a medium-speed coal mill coal separator device described in the utility model includes a medium-speed coal mill coal separator body, an umbrella-shaped coal separator body is fixedly welded to the top of the medium-speed coal mill coal separator body, and a surfacing layer is welded to the outer wall of the umbrella-shaped coal separator body, and the bottom of the medium-speed coal mill coal separator body is welded to the upper iron plate of the center cylinder, the bottom of the upper iron plate of the center cylinder is provided with a center cylinder body, and a grinding disc roller is opened inside the center cylinder body.
[0007] Preferably, the umbrella-shaped coal separator body is arranged at the top center position of the medium-speed coal mill coal separator body, and the medium-speed coal mill coal separator body is arranged in an umbrella shape.
[0008] Preferably, the top of the umbrella-shaped coal divider body is chamfered, and the umbrella-shaped coal divider body is made of carbon steel.
[0009] Preferably, the umbrella-shaped coal separator body is arranged in an umbrella shape, and six umbrella-shaped coal separator bodies are arranged at equal angles with respect to the vertical center axis of the medium-speed coal mill coal separator body.
[0010] Preferably, the outer wall of the umbrella-shaped coal divider body is evenly covered with a surfacing layer, and the surfacing layer is made of a wear-resistant welding rod material.
[0011] Preferably, the upper iron plate of the center tube is integrated with the coal separator body of the medium-speed coal mill, and the upper iron plate of the center tube is located at the center of the center tube body.
[0012] Preferably, the upper iron plate of the central tube and the central tube body form a detachable structure, and the central tube body and the grinding wheel roller are integrated.
[0013] The utility model is beneficial in that:
[0014] 1. After the modification, the umbrella-shaped coal separator device of the circular coal mill not only eliminates the problem of continuous and uniform coal distribution caused by damage to the coal separator, thus improving the working efficiency of the coal mill, but also changes the material to improve its hardness and wear resistance, thereby increasing the service life of the coal separator. Before the modification, each coal mill needed to replace and repair the conical coal separator three to five times on average in one year, while after the modification, the coal separator only needed to be repaired once a year on average. The production cost of a conical coal separator is 600 yuan, and it takes two employees four to five hours to replace a conical coal separator while stopping the coal mill. In summary, this modification has low cost and good effect, can reduce the number of operators by two, save four to five hours of operating time, save about 16,000 yuan in labor costs throughout the year, increase the power generation of the full-load power plant for more than nine days, create a profit of more than 3 million yuan, and make a significant contribution to increasing the economic benefits of the power plant. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from above;
[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;
[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model as a whole when viewed from above;
[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model after being disassembled as a whole;
[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the cladding layer of the utility model.
[0021] In the figure: 1. Medium-speed coal mill coal separator body; 2. Umbrella-shaped coal separator body; 3. Overlay layer; 4. Iron plate on the upper part of the center tube; 5. Center tube body; 6. Grinding disc roller. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] like Figures 1 to 5 As shown, a medium-speed coal mill coal separator device comprises a medium-speed coal mill coal separator body 1, an umbrella-shaped coal separator body 2 is fixedly welded to the top of the medium-speed coal mill coal separator body 1, and a cladding layer 3 is welded to the outer wall of the umbrella-shaped coal separator body 2, and a center tube upper iron plate 4 is welded to the bottom of the medium-speed coal mill coal separator body 1, a center tube body 5 is arranged at the bottom of the center tube upper iron plate 4, and a grinding disc roller 6 is opened inside the center tube body 5.
[0024] like Figures 1 to 5 As shown, a medium-speed coal mill coal separator device is provided, an umbrella-shaped coal separator body 2 is arranged at the top center position of the medium-speed coal mill coal separator body 1, and the medium-speed coal mill coal separator body 1 is umbrella-shaped, the top of the umbrella-shaped coal separator body 2 is chamfered, and the umbrella-shaped coal separator body 2 is made of carbon steel, the umbrella-shaped coal separator body 2 is umbrella-shaped, and the umbrella-shaped coal separator body 2 is arranged at six equal angles about the vertical center axis of the medium-speed coal mill coal separator body 1, and the umbrella-shaped coal separator body 2 is composed of six carbon steel plates with chamfers, and the carbon steel plates are characterized by low price, not easy to damage, and strong impact resistance and wear resistance.
[0025] like Figures 1 to 5As shown, a medium-speed coal mill coal separator device, the outer wall of the umbrella-shaped coal separator body 2 is evenly covered with a weld overlay layer 3, and the weld overlay layer 3 is made of wear-resistant welding rod material, each umbrella-shaped coal separator body 2 is composed of six carbon steel plates, which is characterized in that if one of them is damaged, it can be welded separately during maintenance without replacing the whole, which can not only improve work efficiency but also save labor costs. The surface of the umbrella-shaped coal separator body 2 is welded with wear-resistant welding rods to increase its service life. The umbrella-shaped coal separator body 2 can increase or decrease its umbrella surface according to the coal separation effect and demand.
[0026] like Figures 1 to 5 As shown, a medium-speed coal mill coal separator device is shown, in which the upper iron plate 4 of the center cylinder and the medium-speed coal mill coal separator body 1 are integrated, and the upper iron plate 4 of the center cylinder is located at the center of the center cylinder body 5, the upper iron plate 4 of the center cylinder and the center cylinder body 5 constitute a detachable structure, and the center cylinder body 5 and the grinding wheel roller 6 are integrated. During maintenance, the upper iron plate 4 of the center cylinder can be directly removed without removing the medium-speed coal mill coal separator body 1 separately. It is characterized by convenient disassembly and assembly, saving maintenance time, simplifying maintenance steps, eliminating the safety hazards in the process of frequent replacement of old coal separators, and essentially reducing safety risks.
[0027] Working principle: First, a medium-speed coal mill coal separator body 1 is welded to the upper iron plate 4 of each center cylinder. The umbrella-shaped coal separator body 2 is made of six carbon steel plates with chamfers. The carbon steel plate is cheap, not easy to damage, and has strong impact resistance and wear resistance. The medium-speed coal mill coal separator body 1 is connected to the upper iron plate 4 of the center cylinder by welding. During maintenance, the upper iron plate 4 of the center cylinder can be directly removed without removing the medium-speed coal mill coal separator body 1 separately. It is characterized by convenient disassembly and assembly, saving maintenance time, and making maintenance easier. The maintenance steps are simplified, eliminating the safety hazards in the process of frequently replacing old coal separators, and essentially reducing the safety risks. Each umbrella-shaped coal separator body 2 is composed of six carbon steel plates. Its characteristic is that if one of them is damaged, it can be welded and repaired separately during maintenance without replacing the whole. It can not only improve work efficiency but also save labor costs. The surface of the umbrella-shaped coal separator body 2 is welded with wear-resistant welding rods to increase its service life. The umbrella-shaped coal separator body 2 can increase or decrease its umbrella surface according to the coal separation effect and demand.
[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A coal separator device for a medium-speed coal mill, characterized in that: The invention comprises a medium-speed coal mill coal separator body (1), the top of which is fixedly welded to an umbrella-shaped coal separator body (2), and the outer wall of the umbrella-shaped coal separator body (2) is welded to a cladding layer (3), and the bottom of the medium-speed coal mill coal separator body (1) is welded to an upper iron plate (4) of a central cylinder, a central cylinder body (5) is arranged at the bottom of the upper iron plate (4) of the central cylinder, and a grinding wheel roller (6) is arranged inside the central cylinder body (5).
2. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The umbrella-shaped coal separator body (2) is arranged at the top center position of the medium-speed coal mill coal separator body (1), and the medium-speed coal mill coal separator body (1) is arranged in an umbrella shape.
3. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The top of the umbrella-shaped coal divider body (2) is chamfered, and the umbrella-shaped coal divider body (2) is made of carbon steel.
4. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The umbrella-shaped coal separator body (2) is arranged in an umbrella shape, and six umbrella-shaped coal separator bodies (2) are arranged at equal angles with respect to the vertical center axis of the medium-speed coal mill coal separator body (1).
5. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The outer wall of the umbrella-shaped coal divider body (2) is evenly covered with a surfacing layer (3), and the surfacing layer (3) is made of a wear-resistant welding rod material.
6. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The central cylinder upper iron plate (4) is integrated with the medium-speed coal mill coal separator body (1), and the central cylinder upper iron plate (4) is located at the center of the central cylinder body (5).
7. A coal separator device for a medium-speed coal mill according to claim 1, characterized in that: The central cylinder upper iron plate (4) and the central cylinder body (5) form a detachable structure, and the central cylinder body (5) and the grinding wheel roller (6) are integrated.