Center transmission rod mill
By designing a central transmission feeder in the rod mill, abolishing the large and small gears, and using the central transmission method to drive, the existing rod mill's energy consumption and easy collapse of large gears is solved, and energy consumption and maintenance costs are reduced.
Patent Information
- Application Number
- CN202420675373.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-03
AI Technical Summary
Existing rod mills cannot achieve central transmission, resulting in large energy consumption and large gears are prone to tooth collapse during use, which increases maintenance costs and cycles.
A central transmission rod mill is designed. By installing a central transmission feeder on the main body of the rod mill, the spindle drives the cylinder part and the inner parts of the feeder are linked, and the gears are cancelled and driven by a central transmission method.
The center transmission of the rod mill is realized, which reduces energy consumption, avoids additional power consumption of large and small gears and waste work during the transmission process, and reduces maintenance costs and cycles.
Smart Images
Figure CN222678237U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rod mills, in particular to a central transmission rod mill. Background Art
[0002] Rod mill is a mechanical equipment that continues to crush materials after being crushed by crusher, aiming to obtain finer particle products required by the process.
[0003] like Figure 1 As shown, the traditional rod mill is composed of a feeding mechanism, a main bearing seat, a cylinder part, a discharging part, a rod adding and removing machine, a lubrication device, and a transmission part. The transmission part includes a main motor, a main reducer, large and small gears, a pneumatic clutch, an auxiliary transmission device, etc. The transmission part is used to drive the cylinder part to rotate. The driving method of the large and small gears in the transmission part itself consumes a lot of waste power, resulting in high overall energy consumption. Utility Model Content
[0004] The utility model aims at at least solving the problem that the existing rod mill in the prior art cannot realize central transmission.
[0005] The present invention provides a central transmission rod mill, which is achieved by the following specific technical means: comprising a rod mill main body, on which a central transmission feeder is installed, a main shaft in a cylinder part of the rod mill main body extends to the outside of the rod mill main body, and a central transmission feeder is installed at the outer end of the main shaft, the main shaft is used to simultaneously drive the cylinder part and the inner parts of the central transmission feeder to realize linkage, and the raw materials are fed into the cylinder part through the central transmission feeder.
[0006] Preferred technical solution 1: A motor is installed on the central transmission feeder, and the output shaft of the motor is fixedly connected to the main shaft, so as to achieve the technical effect that the motor drives the main shaft to rotate.
[0007] Preferred technical solution two: The central transmission feeder includes a shell fixed on the rod mill body, the main shaft extends to the outer end of the rod mill body, rotates through the shell, and is connected to the motor output shaft fixed on the shell, and the part of the main shaft located in the shell is provided with a spiral conveyor.
[0008] Preferred technical solution three: a feeding turbine is also sleeved on the main shaft portion between the screw conveyor and the barrel portion in the shell.
[0009] The above structure enables this solution to have the following beneficial effects:
[0010] 1. The rod mill is changed from open gear edge transmission to center transmission, eliminating large and small gears and reducing energy consumption per ton of pulp;
[0011] 2. By canceling the small gear group transmission and adopting the central power transmission driving mode, the main shaft in the central drive feeder and the main shaft in the cylinder part of the rod mill body are directly combined into one shaft, thereby avoiding the extra power consumption of driving the large and small gear groups in the prior art and the wasted power in the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a structural diagram of the existing scheme;
[0014] Figure 2 This is a schematic diagram of the overall structure of this program.
[0015] Among them, 1. Rod mill body, 11. Cylinder part, 13. Transmission part, 2. Center transmission feeder, 21. Shell, 211. Material adding port, 22. Screw conveyor, 23. Feeding turbine, 24. Main shaft, 3. Motor. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0017] See also Figure 2 The central drive rod mill comprises a rod mill body 1, on which a central drive feeder 2 is installed. The central drive feeder 2 is used to feed raw materials into a barrel portion 11, and the active feeding method of the central drive feeder 2 is used to replace the passive feeding method of the original feeding mechanism. At the same time, a main shaft 24 in the barrel portion 11 of the rod mill body 1 extends to the central drive feeder 2 for rotation. A motor 3 is installed on the central drive feeder 2, and an output shaft of the motor 3 is fixedly connected to the main shaft 24, so that the motor 3 drives the main shaft 24 to rotate, replacing the original transmission part 13, reducing the number of installed power equipment, eliminating large and small gears, and reducing energy consumption per ton of pulp.
[0018] See also Figure 2, center drive rod mill, the center drive feeder 2 includes a shell 21 fixed on the rod mill body 1, a material adding port 211 is opened on the shell 21, a main shaft 24 in the barrel 11 extends to the outside of the rod mill body 1 and then rotates through the shell 21 and is fixedly connected to the output shaft of the motor 3 fixed on the shell 21, and a spiral conveying member 22 is sleeved on the main shaft 24 located in the shell 21, and the material fed into the center drive feeder 2 from the material adding port 211 is evenly conveyed to the barrel 11 through the spiral conveying member 22, and a feeding turbine 23 is sleeved on the main shaft 24 located between the spiral conveying member 22 and the barrel 11 in the shell 21.
[0019] Compared with the traditional rod mill, taking MBS4765 as an example, the motor 3 adopts a permanent magnet power motor direct connection, and the installed power is reduced from 2000kW to 1800kW; the large and small gears are eliminated, which can achieve energy saving of about 10%; at the same time, due to the elimination of the large gear, the weight of the transmission part 13 is reduced, the operating energy consumption is reduced, and the power damage can be reduced by about 10%; and because the large gear is installed on one side of the cylinder part 11, axial eccentric load will be generated during use. The large gear is eliminated during the design to avoid the eccentric load phenomenon of the cylinder part 11.
[0020] The large and small gears have been eliminated, eliminating the lubrication device and the grease consumption during the operation of the rod mill. This part is expected to save 50,000 to 150,000 yuan in grease costs.
[0021] Steel castings may have casting defects due to some influences in the casting process:
[0022] The large gear ring of the traditional rod mill is a cast steel part. Stress will be generated in the casting process of the large gear ring. Generally, there are two types of stress release. One is natural aging treatment, that is, the casting is placed in the open air for half a year to a year to eliminate or reduce residual stress; the other is artificial aging treatment, such as heat aging, which uses heat treatment methods to eliminate or reduce stress. However, since local stress is not eliminated or reduced, the gear ring may break during use. Once the tooth breaks, the user's maintenance cost is high and the maintenance cycle is long. The use of a central transmission method can avoid this problem from the root.
[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A central transmission rod mill, comprising a rod mill body (1), characterized in that: A central transmission feeder (2) is installed on the rod mill body (1) to replace the feeding mechanism. The main shaft in the cylinder part (11) of the rod mill body (1) extends into the central transmission feeder (2) to rotate. The central transmission feeder (2) is also used to replace the transmission part.
2. A central drive rod mill according to claim 1, characterized in that: A motor (3) is installed on the central transmission feeder (2), and the output shaft of the motor (3) is fixedly connected to the main shaft (24).
3. A central drive rod mill according to claim 2, characterized in that: The central transmission feeder (2) comprises a shell (21) fixed on the rod mill body (1); a main shaft (24) in the barrel (11) extends to the outside of the rod mill body (1) and then rotates through the shell (21) and is fixedly connected to an output shaft of a motor (3) fixed on the shell (21); and a spiral conveying member (22) is sleeved on the main shaft (24) in the shell (21).
4. A central transmission rod mill according to claim 3, characterized in that: A feeding turbine (23) is sleeved on the main shaft (24) located between the screw conveying member (22) and the barrel portion (11) in the housing (21).
5. The central transmission rod mill according to claim 3, characterized in that: The shell (21) is provided with a material adding port (211).
6. A central drive rod mill according to claim 2, characterized in that: The motor (3) is preferably a permanent magnet power motor.