Ball milling device for producing hard alloy ball teeth
By introducing cooling components and a double-layer sieve plate structure into the ball mill, the problem of heat accumulation during the ball milling process was solved, the raw materials were completely ground, and the ball milling quality was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUZHOU RUICHEN CEMENTED CARBIDE CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-05
AI Technical Summary
Existing ball milling devices are prone to overheating during the ball milling process, which leads to the inability to dissipate heat in time, resulting in sludge formation. Furthermore, the raw materials after ball milling contain incompletely ground material.
A ball milling device including a ball mill cylinder and a cooling assembly was designed. Cooling water is sprayed on the outer wall of the ball mill cylinder, and the cooling assembly dissipates heat in a timely manner. A double-layer sieve plate structure ensures that only qualified raw materials are discharged from the ball mill cylinder, avoiding clogging and improving grinding quality.
This effectively avoids the phenomenon of smudging during grinding, ensuring that all raw materials are fully ground after ball milling, thus improving the quality of ball milling.
Smart Images
Figure CN224194869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cemented carbide ball tooth production technology, specifically a ball milling device for cemented carbide ball tooth production. Background Technology
[0002] Carbide ball teeth, with their unique properties, are widely used in oilfield drilling and snow removal, snowplows, and other equipment. They also find excellent applications in cutting tools, mining machinery, road maintenance, and coal drilling tools. Mining carbide ball teeth are primarily used as excavation tools in quarrying, mining, tunneling, and civil engineering. Additionally, they are used as drill bit accessories in heavy-duty rock drills or deep-hole drill bits. Depending on their design, carbide ball teeth come in many types, including conical balls, wedges, coal cutting teeth, road cutting teeth, flat-topped teeth, pointed teeth, spoon-shaped teeth, and mushroom teeth. Carbide ball teeth are an alloy material composed of a hard compound of refractory metals (such as tungsten carbide powder) and a binder metal (such as cobalt or nickel powder), and are widely used in various mechanical transmission systems.
[0003] During production, raw materials need to be mixed in a ball mill, and the mixed metal powder is loaded into a mold and pressed into the desired shape. Existing ball milling equipment is prone to overheating during the ball milling process. If the heat inside the mill cannot be dissipated in time, a paste-grinding phenomenon will occur, and the raw materials after ball milling will contain more or less some incompletely ground material. Utility Model Content
[0004] The purpose of this invention is to provide a ball milling device for producing cemented carbide ball teeth, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball milling device for producing cemented carbide ball teeth, comprising a ball milling cylinder and a cooling assembly. The ball milling cylinder has a first sieve plate inside, a first ball milling chamber is formed on one side of the first sieve plate, and a second ball milling chamber is formed on the other side of the first sieve plate. A second sieve plate is provided at the discharge end of the ball milling cylinder. Grinding media and liners are provided in both the first and second ball milling chambers. The cooling assembly includes a water tank and a water pump. One end of the water pump is connected to the water tank, and the other end of the water pump is connected to a water supply pipe. One end of the water supply pipe is connected to a spray pipe, and the spray pipe is located above the ball milling cylinder.
[0006] The ball mill cylinder is driven by an electric motor, and a driven wheel is provided on the outside of the ball mill cylinder. The output shaft of the electric motor is fixedly connected to the driving wheel, and the driving wheel and the driven wheel are connected by a synchronous belt.
[0007] The ball mill cylinder has a feed end at one end and a support end at the other end.
[0008] The ball mill cylinder has a first bearing seat on one side and a second bearing seat on the other side. The feed end is connected to the first bearing seat via a bearing, and the support end is connected to the second bearing seat via a bearing.
[0009] The feed end of the ball mill cylinder is connected to the feed hopper, and the feed hopper and the feed end are connected by a bearing.
[0010] The feed hopper is fixed to the base frame by a fixing frame.
[0011] The water tank is equipped with a drain pipe, and a valve is installed on the drain pipe.
[0012] The liner is fixedly installed on the inner wall of the ball mill cylinder, and multiple sets of the liner are evenly distributed at intervals along the circumference of the ball mill cylinder.
[0013] A collection box is placed below the discharge end of the ball mill cylinder.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model achieves cooling of the ball mill cylinder by spraying cooling water onto the outer wall of the ball mill cylinder through a cooling component, thereby dissipating the heat inside the mill in a timely manner, avoiding the phenomenon of clogging the mill, and improving the quality of ball milling.
[0016] 2. In this invention, the raw material inside the first ball mill chamber can only pass through the first sieve plate and enter the second ball mill chamber after it has been ground to a qualified standard. The raw material inside the second ball mill chamber can only pass through the second sieve plate and be discharged after it has been ground to a qualified standard. This ensures that the raw material discharged from the discharge end of the ball mill cylinder is fully ground, thereby improving the grinding quality. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure from one side view of the present invention;
[0018] Figure 2 This is a schematic diagram of the overall structure from another side view of the present invention;
[0019] Figure 3 This is a schematic diagram of the internal structure of the ball mill cylinder of this utility model;
[0020] Figure 4 This is a schematic diagram showing the connection between the feed hopper and the feed end of this utility model.
[0021] In the diagram: 1. Grinding mill cylinder; 2. Cooling assembly; 3. Grinding box; 4. First bearing housing; 5. Second bearing housing; 6. Feed hopper; 7. Motor; 11. First screen plate; 12. First grinding chamber; 13. Second grinding chamber; 14. Grinding media; 15. Liner plate; 16. Second screen plate; 17. Feed end; 18. Support end; 19. Driven wheel; 21. Water tank; 22. Water pump; 23. Water supply pipe; 24. Spray pipe; 25. Drain pipe; 61. Fixing frame; 71. Drive wheel; 72. Synchronous belt. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-4 This utility model provides a technical solution: a ball milling device for producing cemented carbide ball teeth, including a ball milling cylinder 1 and a cooling assembly 2. The ball milling cylinder 1 has a first sieve plate 11 inside, a first ball milling chamber 12 is formed on one side of the first sieve plate 11, and a second ball milling chamber 13 is formed on the other side of the first sieve plate 11. A second sieve plate 16 is provided at the discharge end of the ball milling cylinder 1. Grinding bodies 14 and liners 15 are provided in both the first ball milling chamber 12 and the second ball milling chamber 13. The cooling assembly 2 includes a water tank 21 and a water pump 22. One end of the water pump 22 is connected to the water tank 21, and the other end of the water pump 22 is connected to a water supply pipe 23. One end of the water supply pipe 23 is connected to a spray pipe 24, and the spray pipe 24 is located above the ball milling cylinder 1.
[0024] Cooling water is pre-introduced into the water tank 21. During the ball milling process, the water pump 22 works to extract the cooling water from the water tank 21 and deliver it to the spray pipe 24 through the water pipe 23. Finally, the cooling water is sprayed out through the spray pipe 24 and evenly sprayed onto the outer wall of the ball mill 1. It then flows down the outer wall and eventually returns to the water tank 21. During the ball milling process, the ball mill 1 is cooled by spraying cooling water onto the outer wall of the ball mill 1, thereby dissipating the heat inside the mill in a timely manner, avoiding the phenomenon of clogging, and improving the quality of ball milling.
[0025] The raw material first enters the first ball mill chamber 12 through the feed end 17, and then enters the second ball mill chamber 13. Inside the first ball mill chamber 12, the raw material moves continuously towards the discharge end under the action of centrifugal force, impact force, and extrusion force. The raw material that has passed through the first screen plate 11 enters the second ball mill chamber 13. The raw material that has not been completely ground continues to be ground in the first ball mill chamber 12 until it is ground to a qualified state. Similarly, inside the second ball mill chamber 13, the raw material moves continuously towards the discharge end under the action of centrifugal force, impact force, and extrusion force. The raw material that has passed through the second screen plate 16 is discharged. The raw material that has not been completely ground continues to be ground in the second ball mill chamber 13, so that the raw material discharged from the discharge end of the ball mill 1 is all completely ground, thus improving the grinding quality.
[0026] The ball mill cylinder 1 is driven by an electric motor 7. A driven wheel 19 is provided on the outside of the ball mill cylinder 1. The output shaft of the electric motor 7 is fixedly connected to the driving wheel 71. The driving wheel 71 and the driven wheel 19 are connected by a synchronous belt 72.
[0027] When the electric motor 7 is working, it drives the drive wheel 71 at one end to rotate. Through the synchronous belt 72, it drives the driven wheel 19 to rotate. The driven wheel 19 drives the ball mill cylinder 1 to make a circular motion. When the ball mill cylinder 1 rotates, the grinding media 14 adheres to the liner plate 15 due to inertia. As the ball mill cylinder 1 accelerates, the grinding media 14 is carried to a certain height by centrifugal force, forming a projectile state. At this time, the grinding media 14 impacts the raw materials in the cylinder at high speed, producing a crushing effect. During the revolution, the grinding media 14 generates friction with the cylinder and adjacent grinding media 14, further grinding the raw materials to achieve finer grinding and mixing of different raw materials.
[0028] The ball mill cylinder 1 has a feed end 17 at one end and a support end 18 at the other end. The raw material enters the interior of the ball mill cylinder 1 through the feed end 17.
[0029] The ball mill cylinder 1 has a first bearing seat 4 on one side and a second bearing seat 5 on the other side. The feed end 17 is connected to the first bearing seat 4 by a bearing, and the support end 18 is connected to the second bearing seat 5 by a bearing. The ball mill cylinder 1 is supported by the first bearing seat 4 and the second bearing seat 5. At the same time, the feed end 17 of the ball mill cylinder 1 can rotate relative to the first bearing seat 4, and the support end 18 of the ball mill cylinder 1 can rotate relative to the second bearing seat 5.
[0030] The feed end 17 of the ball mill cylinder 1 is connected to the feed hopper 6, and the feed hopper 6 and the feed end 17 are connected by a bearing.
[0031] The feed hopper 6 is fixed to the base frame by the fixing frame 61. The feed hopper 6 is in a fixed state, and the feed end 17 of the ball mill cylinder 1 can rotate relative to the feed hopper 6. During the rotation of the ball mill cylinder 1, the feed hopper 6 can feed the material normally.
[0032] The water tank 21 is equipped with a drain pipe 25, and a valve is installed on the drain pipe 25, which can drain the water in the water tank 21 by opening the drain pipe 25.
[0033] The liner 15 is fixedly installed on the inner wall of the ball mill cylinder 1. Multiple sets of liners 15 are evenly distributed along the circumference of the ball mill cylinder 1. When the ball mill cylinder 1 rotates, the grinding media 14 adheres to the liner 15 due to inertia and is carried to a certain height.
[0034] A collection box 3 is placed below the discharge end of the ball mill cylinder 1. The raw materials discharged from the discharge end of the ball mill cylinder 1 enter the collection box 3 and are collected by the collection box 3.
[0035] Working principle: During operation, a certain proportion of raw materials are fed into the ball mill cylinder 1 through the feed hopper 6. The motor 7 drives the ball mill cylinder 1 to rotate. The raw materials first enter the first ball mill chamber 12 through the feed end 17. Inside the first ball mill chamber 12, the raw materials move continuously towards the discharge end under the action of centrifugal force, impact force, and extrusion force. The ground raw materials pass through the first sieve plate 11 and enter the second ball mill chamber 13. The incompletely ground raw materials continue to be ground in the first ball mill chamber 12 until they are ground to a satisfactory state. Inside the second ball mill chamber 13, the raw materials are ground under the action of centrifugal force, impact force, and extrusion force. The material continuously moves towards the discharge end. After being properly ground, the raw material passes through the second screen plate 16 and is discharged. The incompletely ground material continues to be ground in the second ball mill chamber 13. The discharged material enters the collection box 3. During the ball milling process, the water pump 22 works to extract the cooling water in the water tank 21 and deliver it to the spray pipe 24 through the water pipe 23. Finally, the cooling water is sprayed out through the spray pipe 24 and evenly sprayed onto the outer wall of the ball mill 1. It flows down along the outer wall and eventually flows back into the water tank 21. The ball mill 1 is cooled by spraying cooling water onto the outer wall of the ball mill 1.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A ball milling apparatus for producing cemented carbide ball teeth, comprising a ball milling cylinder (1) and a cooling assembly (2), characterized in that: The ball mill cylinder (1) has a first sieve plate (11) inside. A first ball mill cavity (12) is formed on one side of the first sieve plate (11), and a second ball mill cavity (13) is formed on the other side of the first sieve plate (11). A second sieve plate (16) is provided at the discharge end of the ball mill cylinder (1). Grinding media (14) and liners (15) are provided in both the first ball mill cavity (12) and the second ball mill cavity (13). The cooling assembly (2) includes a water tank (21) and a water pump (22). One end of the water pump (22) is connected to the water tank (21), and the other end of the water pump (22) is connected to a water supply pipe (23). One end of the water supply pipe (23) is connected to a spray pipe (24), and the spray pipe (24) is located above the ball mill cylinder (1).
2. The ball milling apparatus for producing cemented carbide ball teeth according to claim 1, characterized in that: The ball mill cylinder (1) is driven by an electric motor (7). A driven wheel (19) is provided on the outside of the ball mill cylinder (1). The output shaft of the electric motor (7) is fixedly connected to the driving wheel (71). The driving wheel (71) and the driven wheel (19) are connected by a synchronous belt (72).
3. The ball milling apparatus for producing cemented carbide ball teeth according to claim 1, characterized in that: One end of the ball mill cylinder (1) is provided with a feed end (17), and the other end of the ball mill cylinder (1) is provided with a support end (18).
4. The ball milling apparatus for producing cemented carbide ball teeth according to claim 3, characterized in that: A first bearing seat (4) is provided on one side of the ball mill cylinder (1), and a second bearing seat (5) is provided on the other side of the ball mill cylinder (1). The feed end (17) is connected to the first bearing seat (4) by a bearing, and the support end (18) is connected to the second bearing seat (5) by a bearing.
5. A ball milling apparatus for producing cemented carbide ball teeth according to claim 3, characterized in that: The feed end (17) of the ball mill cylinder (1) is connected to the feed hopper (6), and the feed hopper (6) and the feed end (17) are connected by a bearing.
6. The ball milling apparatus for producing cemented carbide ball teeth according to claim 5, characterized in that: The feed hopper (6) is fixed to the base frame by a fixing frame (61).
7. The ball milling apparatus for producing cemented carbide ball teeth according to claim 1, characterized in that: The water tank (21) is provided with a drain pipe (25), and a valve is installed on the drain pipe (25).
8. The ball milling apparatus for producing cemented carbide ball teeth according to claim 1, characterized in that: The liner (15) is fixedly installed on the inner wall of the ball mill cylinder (1), and multiple sets of the liner (15) are evenly distributed at intervals along the circumferential direction of the ball mill cylinder (1).
9. A ball milling apparatus for producing cemented carbide ball teeth according to claim 1, characterized in that: A collection box (3) is placed below the discharge end of the ball mill cylinder (1).