Coal mill with stone coal collecting function
By introducing components such as support plates, limiting structures, and filter plates into the coal mill, and adopting threaded connections and sliding structures, the problem of poor collection of stones and coal during the replacement of grinding rollers has been solved, realizing convenient replacement of grinding rollers and efficient collection of stones and coal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JINMEI ZHONGNENG CHEM IND
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-26
AI Technical Summary
The existing coal mill has poor stone coal collection effect when the grinding roller is replaced, and the collection box limit is inconvenient.
The design includes components such as a support plate, a limiting structure, a collection box, a filter plate, an electric telescopic rod, and a grinding disc. The design achieves convenient replacement of the grinding rollers and efficient collection of stones and coal through threaded connections and a sliding structure.
This enables convenient replacement of grinding rollers and efficient collection of stones and coal, thus improving the performance of the coal mill.
Smart Images
Figure CN224405253U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mill technology, specifically a coal mill with a stone coal collection function. Background Technology
[0002] A coal mill is a machine that crushes and grinds coal into pulverized coal. It is an important auxiliary equipment for pulverized coal boilers, offering advantages such as low metal consumption, low investment, low power consumption, low metal wear, and low noise. During operation, a coal and stone collection structure is required to improve the mill's efficiency. For example:
[0003] Chinese Patent Publication No. CN117225542B discloses a coal mill for a thermal power plant, relating to the field of coal mill technology. The mill includes: a body structure comprising a base, a housing mounted on the base, and an internal frame within the housing; a coal grinding mechanism comprising a drive component mounted on the base, a grinding disc connected to the drive component, grinding rollers mounted on the internal frame, and hydraulic rods for supporting the internal frame; and a connecting mechanism comprising a roller body frame, connecting components mounted on the roller body frame, and limiting components symmetrically mounted on the roller body frame. Through the connecting mechanism, the grinding rollers are rotatably mounted on the roller body frame, and the roller body frame is then mounted on the internal frame via a positioning mechanism and a connecting mechanism. The connecting position is located at the upper part of the internal frame, and the space above the internal frame is relatively large, facilitating the disassembly and installation of individual grinding rollers by maintenance personnel.
[0004] The existing technical solutions mentioned above have the following drawbacks: the grinding rollers are disassembled by sliding rods and guide grooves when they are replaced; ordinary coal mills have poor collection effect on stone coal; and the limiting of the collection box is not convenient enough. Therefore, this utility model provides a coal mill with stone coal collection function to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this utility model is to provide a coal mill with a stone coal collection function, so as to solve the problems mentioned in the background art, such as the poor collection effect of ordinary coal mills on stone coal and the inconvenience of limiting the collection box when replacing the grinding rollers by disassembling through sliding rods and guide grooves.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal mill with a stone coal collection function, comprising a body and a connecting pipe installed on the lower left side of the body;
[0007] Also includes:
[0008] A support plate is fixedly installed on the lower outer side of the machine body, and a limiting structure is connected to the lower inner side of the support plate. A collection box is connected to the inner side of the limiting structure. A filter plate is installed on the lower inner side of the machine body, and an electric telescopic rod is connected to the inner left side of the filter plate. A movable plate is fixedly connected to the upper end of the electric telescopic rod.
[0009] A grinding disc is fixedly installed on the upper side inside the machine body. A spring is provided on the outer side of the inner side of the grinding disc. A limit rod is connected to the inner side of the spring, and an installation rod is connected to the upper side of the limit rod. A limit plate is connected to the inner side of the limit rod, and an installation plate is provided on the lower side of the limit plate. A cylinder is fixedly installed on the middle side of the inner side of the installation plate, and a connecting block is connected to the inner side of the cylinder. A grinding roller is connected to the inner side of the connecting block. A connecting roller is connected to the middle side of the lower end of the grinding disc.
[0010] Preferably, the filter plate and the movable plate are connected in a sliding manner and the filter plate acts as a barrier against the coal on the upper side of the filter plate.
[0011] Preferably, the filter plate is connected to the machine body by welding, and the upper side of the filter plate is inclined.
[0012] Preferably, the limiting plate and the limiting rod are connected by a snap-fit mechanism, and the limiting rod and the grinding disc are connected by a sliding mechanism.
[0013] Preferably, the limiting structure includes a fixing plate, which is fixedly installed on the lower inner side of the support plate, and a connecting block is connected to the outer side of the middle part of the support plate, and a clamping plate is fixedly installed on the inner side of the connecting block, and a fixing rod is connected to the outer side of the upper end of the connecting block.
[0014] Preferably, the clamping plate is connected to the collection box by a bonding method, and the clamping plate is symmetrically distributed about the center line of the collection box.
[0015] Preferably, the connecting block and the fixing rod are connected by a thread, and the vertical cross-section of the connecting block is an "L" shaped structure.
[0016] Preferably, the limiting rod and the mounting rod are connected by threads, and the mounting rods are symmetrically distributed about the center line of the limiting plate.
[0017] Compared with the prior art, the beneficial effects of this utility model are: the coal mill with the stone coal collection function of this application is convenient to replace the grinding rollers, convenient to collect stone coal, and convenient to limit the collection box;
[0018] 1. By rotating the mounting rod, the mounting rod is threaded onto the outer side of the upper end of the grinding disc, thereby separating the mounting rod from the outer side of the upper end of the limiting rod. Then, pull the limiting plate upward, causing the limiting plate to push the limiting rod to slide outward inside the grinding disc, thereby causing the limiting rod to compress the spring, and thus separating the limiting rod from the outer side of the limiting plate. Then, pull the mounting plate upward, causing the mounting plate to separate the grinding roller from the outer side of the grinding disc, making it convenient to replace the grinding roller.
[0019] 2. By placing the collection box on the upper side of the fixed plate and pushing the connecting block inward, the connecting block slides inward in the middle of the support plate, thereby causing the clamping plate to slide inward and clamp the collection box. Rotating the fixed rod causes the fixed rod to be threaded on the upper outer side of the connecting block, thereby causing the fixed rod to be threaded on the middle outer side of the support plate, which facilitates limiting the position of the collection box.
[0020] 3. The filter plate filters the gravel and coal. Activate the electric telescopic rod to move the moving plate downward inside the filter plate on the left side. This causes the gravel on the upper side of the filter plate to roll down to the inner left side of the machine body, and then the gravel enters the collection box through the connecting pipe for easy collection. Attached Figure Description
[0021] Figure 1 This is a schematic cross-sectional view of the connection between the body and the support plate of this utility model.
[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0023] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;
[0024] Figure 4 This is a schematic cross-sectional view of the connection between the body and the filter plate of this utility model.
[0025] Figure 5 This utility model Figure 4 Enlarged structural diagram at point C;
[0026] Figure 6 This is a schematic cross-sectional view of the connection between the body and the grinding disc of this utility model.
[0027] Figure 7 This utility model Figure 6 Enlarged structural diagram at point D.
[0028] In the diagram: 1. Machine body; 2. Grinding disc; 3. Grinding roller; 4. Connecting roller; 5. Filter plate; 6. Connecting pipe; 7. Support plate; 8. Collection box; 9. Mounting plate; 10. Cylinder; 11. Connecting block; 12. Limiting plate; 13. Electric telescopic rod; 14. Moving plate; 15. Clamping plate; 16. Fixing plate; 17. Connecting block; 18. Fixing rod; 19. Spring; 20. Limiting rod; 21. Mounting rod. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-7 This utility model provides a technical solution: a coal mill with a stone coal collection function, comprising: a connecting pipe 6 installed on the lower left side of the machine body 1; a support plate 7 fixedly installed on the lower outer side of the machine body 1, with a limiting structure connected to the lower inner side of the support plate 7, and a collection box 8 connected to the inner side of the limiting structure; a filter plate 5 installed on the lower inner side of the machine body 1, with an electric telescopic rod 13 connected to the inner left side of the filter plate 5; and the upper part of the electric telescopic rod 13...
[0031] A movable plate 14 is fixedly connected to the end. The collection box 8 is placed on the upper side of the limiting structure. The limiting structure is pushed inward to clamp the collection box 8, which facilitates the limiting of the collection box 8. The stone coal and pulverized coal are filtered through the filter plate 5. The electric telescopic rod 13 is activated, which drives the movable plate 14 to slide downward inside the left side of the filter plate 5. This causes the stone coal on the upper side of the filter plate 5 to roll down to the inner left side of the machine body 1, and then the stone coal enters the collection box 8 through the connecting pipe 6, which facilitates the collection of stone coal.
[0032] The grinding disc 2 is fixedly installed on the upper side inside the machine body 1. A spring 19 is installed on the outer side of the grinding disc 2. A limit rod 20 is connected to the inner side of the spring 19, and an installation rod 21 is connected to the upper side of the limit rod 20. A limit plate 12 is connected to the inner side of the limit rod 20, and an installation plate 9 is installed on the lower side of the limit plate 12. A cylinder 10 is fixedly installed in the middle of the inner side of the installation plate 9, and a connecting block 11 is connected to the inner side of the cylinder 10. A grinding roller 3 is connected to the inner side of the connecting block 11. A connecting roller 4 is connected to the middle of the lower end of the grinding disc 2. When the cylinder 10 is activated, it drives the connecting block 11 to slide inwards inside the installation plate 9. This causes the connecting block 11 to drive the grinding roller 3 to slide inwards, thereby causing the grinding roller 3 to crush the coal inside the grinding disc 2. The coal inside the grinding disc 2 then falls onto the upper side of the filter plate 5 via the connecting roller 4. The limiting rod 20 and the mounting rod 21 are connected by threads, and the mounting rod 21 is symmetrically distributed about the center line of the limiting plate 12. Rotating the mounting rod 21 connects it to the outer side of the upper end of the grinding disc 2, thereby separating the mounting rod 21 from the outer side of the upper end of the limiting rod 20. The limiting plate 12 and the limiting rod 20 are connected by a snap-fit mechanism, and the limiting rod 20 is connected to the grinding disc 2 by a sliding mechanism. Pulling the limiting plate 12 upwards pushes the limiting rod 20 to slide outwards inside the grinding disc 2, thereby compressing the spring 19 and separating the limiting rod 20 from the outer side of the limiting plate 12. Pulling the mounting plate 9 upwards then separates the grinding roller 3 from the outer side of the grinding disc 2, facilitating the replacement of the grinding roller 3.
[0033] When using a coal mill with a stone coal collection function, specifically as follows: Figure 1 , Figure 4 and Figure 5 In the process, cylinder 10 is activated, causing connecting block 11 to slide inward within mounting plate 9. This, in turn, causes grinding roller 3 to slide inward, resulting in grinding roller 3 crushing the coal inside grinding disc 2. The coal then falls onto the upper side of filter plate 5 via connecting roller 4. Collection box 8 is placed on the upper side of fixing plate 16. Clamping plate 15 is connected to collection box 8 in a fitted manner, and clamping plate 15 is symmetrically distributed about the center line of collection box 8. Connecting block 17 is then pushed inward. The connecting block 17 slides inward from the middle side of the support plate 7, thereby causing the clamping plate 15 to slide inward, and thus clamping the collection box 8. The connecting block 17 and the fixing rod 18 are connected by threads, and the vertical cross-section of the connecting block 17 is an "L" shape. Rotating the fixing rod 18 causes the fixing rod 18 to be threaded on the outer side of the upper end of the connecting block 17, thereby causing the fixing rod 18 to be threaded on the outer side of the middle part of the support plate 7, which facilitates the limiting of the collection box 8.
[0034] Specific examples Figure 1 , Figure 3 and Figure 4 In the process, the filter plate 5 filters the gravel and coal. The filter plate 5 is connected to the moving plate 14 by a sliding method and blocks the coal on the upper side of the filter plate 5. The electric telescopic rod 13 is activated, which drives the moving plate 14 to slide downward on the left side inside the filter plate 5. The filter plate 5 is connected to the machine body 1 by welding, and the upper side of the filter plate 5 is inclined, so that the gravel and coal on the upper side of the filter plate 5 roll down to the inner left side of the machine body 1, and then the gravel and coal enter the collection box 8 through the connecting pipe 6 for easy collection. The coal is then discharged through the discharge pipe set on the right side of the rear end of the machine body 1.
[0035] Specific examples Figure 2 , Figure 6 and Figure 7 In the process, rotate the mounting rod 21 to make the mounting rod 21 threaded on the outer side of the upper end of the grinding disc 2, thereby separating the mounting rod 21 from the outer side of the upper end of the limiting rod 20. Then pull the limiting plate 12 upward, so that the limiting plate 12 pushes the limiting rod 20 to slide outward inside the grinding disc 2, thereby causing the limiting rod 20 to drive the spring 19 to compress, and then separating the limiting rod 20 from the outer side of the limiting plate 12. Then pull the mounting plate 9 upward, so that the mounting plate 9 drives the grinding roller 3 to separate from the outer side of the grinding disc 2, which facilitates the replacement of the grinding roller 3.
[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A coal mill with stone coal collection function, comprising a body (1) and a connecting pipe (6) installed on the lower left side of the body (1); Its features are, Also includes: A support plate (7) is fixedly installed on the lower outer side of the body (1), and a limiting structure is connected to the lower inner side of the support plate (7), and a collection box (8) is connected to the inner side of the limiting structure. A filter plate (5) is installed on the lower inner side of the body (1), and an electric telescopic rod (13) is connected to the left inner side of the filter plate (5), and a moving plate (14) is fixedly connected to the upper end of the electric telescopic rod (13). The grinding disc (2) is fixedly installed on the upper side inside the machine body (1), and a spring (19) is provided on the outer side of the inner side of the grinding disc (2). A limit rod (20) is connected to the inner side of the spring (19), and an installation rod (21) is connected to the upper side of the limit rod (20). A limit plate (12) is connected to the inner side of the limit rod (20), and an installation plate (9) is provided on the lower side of the limit plate (12). A cylinder (10) is fixedly installed on the middle side inside the installation plate (9), and a connecting block (11) is connected to the inner side of the cylinder (10). A grinding roller (3) is connected to the inner side of the connecting block (11), and a connecting roller (4) is connected to the middle side of the lower end of the grinding disc (2).
2. A coal mill with stone and coal collection function according to claim 1, characterized in that: The filter plate (5) and the movable plate (14) are connected by sliding and block the coal on the upper side of the filter plate (5).
3. A coal mill with stone coal collection function according to claim 2, characterized in that: The filter plate (5) is connected to the body (1) by welding, and the upper side of the filter plate (5) is inclined.
4. A coal mill with stone and coal collection function according to claim 1, characterized in that: The limiting plate (12) and the limiting rod (20) are connected by a snap-fit mechanism, and the limiting rod (20) and the grinding disc (2) are connected by a sliding mechanism.
5. A coal mill with stone coal collection function according to claim 1, characterized in that: The limiting structure includes a fixing plate (16), which is fixedly installed on the lower inner side of the support plate (7). A connecting block (17) is connected to the outer side of the middle part of the support plate (7), and a clamping plate (15) is fixedly installed on the inner side of the connecting block (17). A fixing rod (18) is connected to the outer side of the upper end of the connecting block (17).
6. A coal mill with stone and coal collection function according to claim 5, characterized in that: The clamping plate (15) is connected to the collection box (8) by a fitting method, and the clamping plate (15) is symmetrically distributed about the center line of the collection box (8).
7. A coal mill with stone coal collection function according to claim 5, characterized in that: The connecting block (17) and the fixing rod (18) are connected by a thread, and the vertical cross-section of the connecting block (17) is an "L" shaped structure.
8. A coal mill with stone and coal collection function according to claim 4, characterized in that: The limiting rod (20) and the mounting rod (21) are connected by threads, and the mounting rod (21) is symmetrically distributed about the center line of the limiting plate (12).