Vertical mill roller sleeve replacing and heating device

Abstract

The utility model discloses a vertical mill roller sleeve replacement heating device, and relates to the field of vertical mill roller sleeve replacement, the vertical mill roller sleeve replacement heating device comprises a support and a grinding roller, the support is provided with a heating mechanism, and the heating mechanism comprises a driving mechanism, a propane burner and a rotary burning pipe; the driving mechanism is connected with the rotary burning pipe and drives the rotary burning pipe to rotate; the propane burner is mounted on the rotary burning pipe, rotates along with the rotary burning pipe and rotates along the circumference of the inner ring of the grinding roller; according to the utility model, the vertical grinding roller sleeve can be heated through the propane burner, and the grinding roller can be uniformly and quickly heated; and the rotary burning pipe is driven by the driving mechanism to enable the propane burner to rotate along the circumference of the inner ring of the grinding roller, so that all-directional heating is realized.

Description

Technical Field

[0001] The utility model relates to the field of vertical mill roller sleeve replacement, specifically a vertical mill roller sleeve replacement heating device. Background Technology

[0002] Vertical mill is a kind of equipment widely used in grinding process, and is commonly used in cement, metallurgy, mining, electric power, chemical industry and other industries. Compared with traditional ball mill, vertical mill has higher grinding efficiency and lower energy consumption. Its main function is to grind and crush materials to the required fineness. It is widely used in raw material grinding, coal powder preparation, slag grinding and cement grinding and other processes. Vertical mill has compact structure, small footprint, can effectively reduce production costs, and is easy to maintain and easy to operate. It has gradually become the mainstream choice of modern industrial grinding equipment.

[0003] The roller sleeve of the vertical mill is an important wear-resistant component in the vertical mill. It is mainly used to protect the roller from direct wear and improve the working efficiency and service life of the mill. It is installed on the roller and withstands the grinding and extrusion of the material through its wear-resistant material and structure. During the operation of the vertical mill, the roller sleeve is in constant contact and friction with the material, and will gradually wear out. When the wear reaches a certain degree, the thickness of the roller sleeve is reduced, the wear resistance is reduced, and it can no longer effectively protect the roller. Therefore, the roller sleeve of the vertical mill needs to be replaced.

[0004] In the prior art, each time the roller sleeve is replaced, 8 sets of 1500mm acetylene guns are required to evenly bake the roller sleeve surface. About 8 people work for 4 hours and consume 20 bottles of acetylene and 20 bottles of oxygen. To ensure a stable temperature increase, the operators need to cooperate with each other to make the roller sleeve evenly heated. Therefore, there is a high intensity of work, a long cycle, and the risk of tempering explosion during the operation. Contents of utility model

[0005] The purpose of the utility model is to provide a vertical mill roller sleeve replacement heating device to solve the problem that roller sleeve replacement is time-consuming, has high work intensity, long cycle, and has the risk of tempering explosion during the operation process. During the replacement process, the roller sleeve is heated by the principle of thermal expansion and contraction to expand the roller sleeve and expand the connection gap with the assembly, so as to achieve the purpose of roller sleeve removal.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A vertical mill roller sleeve replacement heating device comprises a bracket and a grinding roller, wherein the bracket is provided with a heating mechanism, wherein the heating mechanism comprises a driving mechanism, a propane burner and a rotating sintering tube; the driving mechanism is connected to the rotating sintering tube and drives it to rotate, and the propane burner is installed on the rotating sintering tube and rotates with the rotating sintering tube and along the inner circumference of the grinding roller.

[0008] Preferably, the propane burner includes a first propane burner and a second propane burner; the first propane burner and the second propane burner are oppositely arranged at the lower part of the rotary combustion tube.

[0009] Preferably, the heating device is mounted on the bracket through a rotary bearing.

[0010] Preferably, the driving mechanism includes a motor, a speed reducer and a gear mechanism; the power output end of the motor is connected to the speed reducer, and the speed reducer is connected to the rotary combustion tube through the gear mechanism.

[0011] Preferably, the rotary combustion tube is connected with a propane pipe, and the propane pipe is connected to the driving mechanism.

[0012] Preferably, a rotary joint is further included; the rotary joint is connected to the upper part of the propane pipe.

[0013] Preferably, a propane tube is further included, and the propane tube is connected to the rotary joint.

[0014] Preferably, a temperature sensor and an operation box are further included; the temperature sensor is installed on one side of the grinding roller, and the operation box is respectively connected to the temperature sensor and the motor.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model can heat the vertical grinding roller sleeve through the propane burner, and can heat the grinding roller evenly and quickly; the rotary combustion tube drives the propane burner to rotate along the circumference of the inner ring of the grinding roller under the drive of the driving mechanism, realizing omnidirectional heating.

[0016] The two oppositely arranged propane burners can effectively utilize the heat generated by the combustion of the gas, improve the combustion efficiency, reduce the gas consumption, and achieve the energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 is Figure 1 the enlarged schematic diagram of A in

[0019] In the figure: 1, the first propane burner; 2, the bracket; 3, the rotary combustion tube; 4, the second propane burner; 5, the grinding roller; 6, the propane pipe; 7, the rotary joint; 8, the propane tube; 9, the driving mechanism; 10, the temperature sensor; 11, the operation box; 12, the motor; 13, the speed reducer; 14, the gear mechanism; 15, the rotary bearing. DETAILED DESCRIPTION OF THE INVENTION

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Referring to Figure 1 and Figure 2 As shown, the present utility model discloses a heating device for replacing a vertical mill roll sleeve, which includes a bracket 2 and a mill roll 5. A heating mechanism is provided on the bracket 2, and the heating mechanism includes a driving mechanism 9, a propane burner, and a rotating burner tube 3. The driving mechanism 9 is connected to the rotating burner tube 3 and drives it to rotate. The propane burner is installed on the rotating burner tube 3 and rotates with the rotating burner tube 3 and rotates along the inner circumference of the mill roll 5. In this embodiment, the bracket 2 is welded by 10# channel steel, with a diameter * height = φ2000 * 1000mm. The propane burner is connected by a φ10 stainless steel pipe to complete the gas source delivery. The present utility model can heat the vertical mill roll sleeve through the propane burner, and can heat the mill roll evenly and quickly. The rotating burner tube 3 drives the propane burner to rotate along the inner circumference of the mill roll under the drive of the driving mechanism 9, realizing omnidirectional heating.

[0022] The propane burner includes a first propane burner 1 and a second propane burner 4. The first propane burner 1 and the second propane burner 4 are oppositely arranged at the lower part of the rotating burner tube 3. The two oppositely arranged propane burners can effectively utilize the heat generated by the combustion of the gas, improve the combustion efficiency, reduce the gas consumption, and achieve the energy-saving effect.

[0023] The heating device is installed on the bracket 2 through a rotating bearing 15. The rotating bearing 15 enables the heating device to be conveniently installed on the bracket 2 and realizes smooth rotation operation through the rotating bearing 15.

[0024] The driving mechanism 9 includes a motor 12, a speed reducer 13, and a gear mechanism 14. The power output end of the motor 12 is connected to the speed reducer 13, and the speed reducer 13 is connected to the rotating burner tube 3 through the gear mechanism 14. By driving the speed reducer 13 by the motor 12 and then driving the rotating burner tube 3 through the gear mechanism 14, stable and precise rotation control can be achieved, ensuring the uniform rotation of the rotating burner tube 3 during the heating process and avoiding uneven heating. At the same time, due to the use of the speed reducer 13, the high speed output by the motor 12 can be effectively reduced, enabling the rotating burner tube 3 to rotate at a suitable speed, thereby adjusting the speed according to the actual heating requirements and improving the adaptability and flexibility of the device.

[0025] The rotary burner tube 3 is connected to a propane pipe 6, and the propane pipe 6 is connected to the drive mechanism 9; when connecting, the propane pipe 6 cooperates with the large gear; it also includes a rotary joint 7; the rotary joint 7 is connected to the upper part of the propane pipe 6; it further includes a propane tube 8, and the propane tube 8 is connected to the rotary joint 7.

[0026] It also includes a temperature sensor 10 and an operation box 11; the temperature sensor 10 is installed on one side of the grinding roller 5, and the operation box 11 is respectively connected to the temperature sensor 10 and the motor 12; by equipping with the temperature sensor 10 and the operation box 11, the temperature of the grinding roller sleeve can be monitored in real time and controlled through the operation box 11 to ensure the temperature stability during the heating process and avoid overheating or insufficient heating.

[0027] In summary, when the vertical mill roller sleeve replacement heating device is in use, place the device above the roller sleeve, start the motor 12 through the button on the operation box 11, drive the reduction gear 13 and the gear mechanism 14 by the motor 12, and drive the rotary burner tube 3 to rotate circumferentially. The propane burner rotates circumferentially along the inner circle of the grinding roller 5. After the propane burner is ignited, the grinding roller 5 is evenly heated. The operation box 11 installed beside the device can be operated remotely to reduce the safety risk; at the same time, the device is equipped with a temperature sensor 10 to detect the temperature of the grinding roller 5 in real time, and the rotation speed of the motor 12 is adjusted in time according to the temperature feedback, so that the grinding roller 5 can quickly heat up, be evenly heated, quickly reach the thermal expansion coefficient, the roller sleeve expands, and the diameter increases, enabling the assembly operation conditions to be met.

[0028] To prove the cost-effectiveness of this device, the vertical mill roller sleeve replacement heating device was tested as follows:

[0029] Manual baking cost:

[0030] Oxygen-acetylene cost: 50 yuan * 40 bottles * 12 times = 24000 yuan

[0031] Maintenance cost: 6 people * 2.5 hours * 31.4 yuan * 12 times = 5652 yuan

[0032] Using the baking device:

[0033] Propane cost: 120 yuan * 6 bottles * 12 times = 8640 yuan

[0034] Maintenance cost: 1 person * 0.75 hours * 31.4 yuan * 12 times = 282.6 yuan

[0035] Cost savings: 24000 yuan + 5652 yuan - 8640 yuan - 282.6 yuan = 20729.4 yuan.

[0036] It can be seen from the above experimental data that through this device, the gas consumption can be reduced to 1 / 3 of the original, and the baking time can be reduced to 1 / 2 of the original. At the same time, it can avoid uneven heating of the roller sleeve caused by human factors and the inability to take it out; tempering explosion accidents caused by human operation reasons, save maintenance costs, improve labor efficiency, and reduce operation risks.

[0037] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A vertical mill roller sleeve replacement heating device, characterized in that: The invention comprises a support (2) and a grinding roller (5); the support (2) is provided with a heating mechanism, the heating mechanism comprising a driving mechanism (9), a propane burner and a rotating flask (3); the driving mechanism (9) is connected to the rotating flask (3) and drives the rotating flask (3) to rotate; the propane burner is installed on the rotating flask (3) and rotates with the rotating flask (3) and along the inner circumference of the grinding roller (5).

2. The vertical mill roller sleeve replacement and heating device according to claim 1 is characterized in that: The propane burner comprises a first propane burner (1) and a second propane burner (4); the first propane burner (1) and the second propane burner (4) are arranged relatively at the lower part of the rotating flask (3).

3. The vertical mill roller sleeve replacement and heating device according to claim 2 is characterized in that: The heating device is mounted on the bracket (2) via a rotary bearing (15).

4. The vertical mill roller sleeve replacement and heating device according to claim 2 is characterized in that: The driving mechanism (9) comprises a motor (12), a reducer (13) and a gear mechanism (14); the power output end of the motor (12) is connected to the reducer (13), and the reducer (13) is connected to the rotary sintering tube (3) via the gear mechanism (14).

5. The vertical mill roller sleeve replacement and heating device according to claim 4 is characterized in that: The rotary calcining tube (3) is connected to a propane pipe (6), and the propane pipe (6) is connected to the driving mechanism (9).

6. The vertical mill roller sleeve replacement and heating device according to claim 5 is characterized in that: It also comprises a rotary joint (7); the rotary joint (7) is connected to the upper part of the propane through pipe (6).

7. The vertical mill roller sleeve replacement and heating device according to claim 6 is characterized in that: It also comprises a propane pipe (8), wherein the propane pipe (8) is connected to the rotary joint (7).

8. The vertical mill roller sleeve replacement and heating device according to claim 4 is characterized in that: It also includes a temperature sensor (10) and an operating box (11); the temperature sensor (10) is installed on one side of the grinding roller (5), and the operating box (11) is connected to the temperature sensor (10) and the motor (12) respectively.

Images