Wet-type ball mill with wear-resistant bent pipe
By installing an anti-wear branch pipe at the bottom of the mixing feed pipe of the wet ball mill and filling it with limestone particles, the leakage problem at the bend was solved, the anti-wear effect was achieved, and the continuity of production and material quality were ensured.
Patent Information
- Application Number
- CN202423060059.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The elbow at the bottom of the mixing feed pipe of a wet ball mill is prone to leakage due to material erosion, which affects production.
A wear-resistant branch pipe is installed at the bottom of the mixing feed pipe and filled with limestone particles. The limestone particles themselves resist the impact of materials, and the limestone particles are periodically replaced and discharged online through valves one and two.
It effectively prevents leakage at the bend, maintains stable material slurry quality inside the ball mill cylinder, and avoids the impact of downtime for maintenance.
Smart Images
Figure CN223761120U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ball mill technology, specifically a wet ball mill with a bend-tube anti-wear design. Background Technology
[0002] The limestone wet desulfurization pulping system in thermal power plants uses a wet ball mill for pulping. The inlet of the wet ball mill is connected to a mixing feed pipe. Limestone particles and process water are mixed at the mixing feed pipe before entering the wet ball mill. The mixing feed pipe is equipped with an elbow, which is prone to leakage due to material erosion. If a leak occurs, shutdown for maintenance or replacement will affect production. Utility Model Content
[0003] The main objective of this invention is to provide a wet ball mill with a bend-pipe anti-wear design to solve the problem of leakage that easily occurs at the bottom bend of the mixing feed pipe of the wet ball mill in the prior art due to material erosion.
[0004] To achieve the above objectives, this utility model provides a wet ball mill with bend-pipe anti-wear, including a ball mill cylinder, with a mixing feed pipe connected to the inlet of the ball mill cylinder; the bottom of the mixing feed pipe is provided with an elbow, and the top is connected to a limestone particle feed pipe and a process water inlet pipe; the bottom of the elbow is fixedly connected to an anti-wear branch pipe communicating with the mixing feed pipe, and a valve is provided at the bottom of the anti-wear branch pipe, with limestone particles placed inside the anti-wear branch pipe.
[0005] Furthermore, a valve is installed at the top of the wear-resistant branch pipe.
[0006] Furthermore, the outlet of the ball mill cylinder is connected to the inlet of a hydrocyclone via a circulation pipe, the underflow port at the bottom of the hydrocyclone is connected to a mixing feed pipe via an underflow pipe, and the overflow port at the top is connected to a desulfurization absorption tower via an overflow pipe.
[0007] Furthermore, the anti-wear branch pipe is connected to a trench via a discharge pipe.
[0008] Furthermore, a circulation pump is connected to the circulation pipe.
[0009] This invention features a wear-resistant branch pipe with limestone particles inside, which allows the limestone particles to resist the impact of materials during feeding, preventing leakage at the bend at the bottom of the mixing feed pipe due to material impact. A first valve allows for the periodic discharge and replacement of the limestone particles inside the wear-resistant branch pipe, preventing long-term soaking and deterioration of the limestone particles from affecting the quality of the slurry inside the ball mill. A second valve, working in conjunction with the first valve, enables online discharge and replacement of the limestone particles inside the wear-resistant branch pipe. Attached Figure Description
[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0011] Figure 1 This is a schematic diagram of the structure of the wet ball mill with bend-tube anti-wear in the embodiment;
[0012] In the diagram: 1. Ball mill cylinder; 2. Mixing feed pipe; 201. Elbow; 3. Process water inlet pipe; 4. Anti-wear branch pipe; 5. Valve 1; 6. Limestone particle feed pipe; 7. Valve 2; 8. Underflow pipe; 9. Overflow pipe; 10. Circulation pipe; 11. Circulation pump; 12. Discharge pipe; 13. Hydrocyclone. Detailed Implementation
[0013] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0014] like Figure 1 As shown in the embodiment of this utility model, a wet ball mill with bend-pipe anti-wear is provided, including a ball mill cylinder 1, a mixing feed pipe 2 connected to the inlet of the ball mill cylinder 1; a bend 201 is provided at the bottom of the mixing feed pipe 2, and a limestone particle feed pipe 6 and a process water inlet pipe 3 are connected to the top of the mixing feed pipe 201; an anti-wear branch pipe 4 connected to the mixing feed pipe 2 is fixedly connected to the bottom of the bend 201, a valve 5 is provided at the bottom of the anti-wear branch pipe 4, and limestone particles are provided inside the anti-wear branch pipe 4.
[0015] The outlet of the ball mill cylinder 1 is connected to the inlet of the hydrocyclone 13 through the circulation pipe 10. The bottom outlet of the hydrocyclone 13 is connected to the mixing feed pipe 2 through the bottom outlet pipe 8, and the top overflow outlet is connected to the desulfurization absorption tower through the overflow pipe 9. The material ground by the hydrocyclone 13 is screened to separate the larger limestone particles from the slurry and then sent back to the ball mill cylinder 1 for further grinding.
[0016] The anti-wear branch pipe 4 is connected to a trench through the discharge pipe 12.
[0017] A circulation pump 11 is connected to the circulation pipe 10.
[0018] In some embodiments, a valve 2 7 is provided at the top of the wear-resistant branch pipe 4; when replacing the limestone particles in the wear-resistant branch pipe 4, first close valve 2 7 and open valve 1 5 to discharge the limestone particles; then close valve 1 5 and open valve 2 7, and new material in the limestone particle feed pipe 6 enters the wear-resistant branch pipe 4; by setting valve 2 7, it can cooperate with valve 1 5 to realize the online discharge and replacement of limestone particles in the wear-resistant branch pipe 4.
[0019] The above embodiment, by setting up an anti-wear branch pipe 4 with limestone particles inside, can use the limestone particles themselves to resist the impact of the material during feeding, and avoid leakage caused by the impact of the material at the bend at the bottom of the mixing feed pipe; by setting up valve 5, the limestone particles in the anti-wear branch pipe 4 can be discharged and replaced regularly, preventing the limestone particles from being soaked and deteriorated for a long time and affecting the quality of the material slurry in the ball mill cylinder 1.
[0020] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A wet type ball mill with elbow pipe anti-wear, comprising a ball mill barrel (1), the inlet of the ball mill barrel (1) is connected with a mixed feed pipe (2); the bottom of the mixed feed pipe (2) is provided with an elbow (201), the top is connected with a limestone particle feed pipe (6) and a process water inlet pipe (3); characterized in that, The bottom of the elbow (201) is fixedly connected with an anti-abrasion branch pipe (4) communicated with the mixed feeding pipe (2), the bottom of the anti-abrasion branch pipe (4) is provided with a valve I (5), and the anti-abrasion branch pipe (4) is provided with limestone particles.
2. The wet-type ball mill having a bend pipe and a wear protector according to claim 1, wherein The top of the anti-abrasion branch pipe (4) is provided with a valve II (7).
3. The wet-type ball mill having a bend pipe and a wear protector according to claim 1, wherein The outlet of the ball mill cylinder (1) is connected with the inlet of a cyclone (13) through a circulating pipe (10), the underflow port at the bottom of the cyclone (13) is connected with the mixed feeding pipe (2) through an underflow pipe (8), and the overflow port at the top is connected with a desulfurization absorption tower through an overflow pipe (9).
4. The wet-type ball mill having a bend pipe and a wear protector according to claim 1, wherein The anti-abrasion branch pipe (4) is connected with a ditch through a discharge pipe (12).
5. The wet-type ball mill having a bend pipe and a wear protector according to claim 3, wherein The circulating pipe (10) is connected with a circulating pump (11).