Double-shell sliding bearing pedestal of tower mill
Through the design of the double-shell sliding bearing seat, the cooling chamber and oil injection channel are used to achieve efficient heat exchange, which solves the service life of the traditional sliding bearing seat in high temperature environments and improves the reliability and safety of the equipment.
Patent Information
- Application Number
- CN202422760057.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Traditional sliding bearing seats are prone to deform and wear under high temperature environments, resulting in a shortened service life. The existing cooling methods are not effective, increasing maintenance costs and safety hazards.
A sliding bearing seat adopts a double-shell structure, a cooling chamber is provided between the inner shell and the outer shell, and a water inlet and a water outlet are provided on the outer shell. The oil injection channel communicates through the cooling chamber and the inner shell and the sliding bearing to achieve efficient heat exchange.
It improves the service life of sliding bearing seats, reduces maintenance difficulty and cost, and improves the aesthetics and safety of the equipment.
Smart Images
Figure CN223241912U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearing seats, and in particular relates to a double-shell sliding bearing seat for a tower mill. Background Art
[0002] Currently, tower mills are primarily used for grinding operations in the mining, cement, and metallurgical industries. Different ore processing plants feed different minerals at varying temperatures. When processing high-temperature materials, these materials transfer heat upward through the spiral agitator shaft. Simultaneously, hot air generated by the high-temperature materials in the grinding cylinder collects at the bottom of the drive shaft. The sliding bearing seat, located at the very bottom of the drive shaft, is significantly affected by the high temperatures. Due to its structure and high temperatures, traditional sliding bearing seats can suffer from burnout, wear, and cracks, necessitating downtime for maintenance. Several existing sliding bearing seats in use domestically and internationally have identified the following technical issues: 1. High temperatures can cause deformation of the sliding bearing and bearing seat, affecting the fit between the bearing seat and the sliding bearing, thereby reducing the bearing's service life. Frequent disassembly and replacement increases operating costs, and the sliding bearing's structure makes on-site repair and installation difficult. 2. To cool the bearing seat, increased grease levels or water spraying are often used, resulting in stains on the tower mill's drive cylinder. This not only affects the aesthetics of the equipment but also poses a safety hazard for maintenance personnel. However, the actual cooling effects of the above two methods are not satisfactory. Summary of the Invention
[0003] The utility model aims to solve the above problems and provides a tower mill double-shell sliding bearing seat which has good cooling effect and increases the service life of the sliding bearing seat.
[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme, which includes a bearing seat body and a sliding bearing, and is characterized in that: the bearing seat body includes an inner shell and an outer shell, and the inner shell and the outer shell are provided with connecting flanges at the upper and lower ends, and the sliding bearing is arranged in the inner shell; a cooling chamber is set between the inner shell, the outer shell and the connecting flange, and the outer shell is provided with a water inlet and a water outlet of the cooling chamber; the outer shell is also provided with an oil injection channel, and the oil injection channel passes through the cooling chamber and is connected with the gap between the inner shell and the sliding bearing.
[0005] As a preferred solution of the present invention, the inner shell, outer shell and connecting flange of the bearing seat body are all configured to be composed of two semicircular structures; a half bearing seat is composed of half of the inner shell, outer shell and connecting flange.
[0006] Furthermore, connecting plates are provided at both ends of the inner shell of the half bearing seat, and the two half bearing seats are connected by the connecting plates and bolt assemblies to form a bearing seat body.
[0007] Furthermore, the two ends of the semicircular outer shell are connected to the connecting plates at the two ends of the inner shell; and the water inlet and the water outlet are arranged on the two semicircular outer shells.
[0008] Furthermore, a partition is provided outside the inner shell to divide the cooling cavity into compartments, and a through hole is provided on the partition.
[0009] Furthermore, the water inlet is arranged at the lower part of the cooling chamber at one end of the partition, and the water outlet is arranged at the upper part of the cooling chamber at the other end of the partition; when the number of partitions is an odd number greater than 2, the through holes on the multiple partitions are alternately arranged up and down from one end of the water inlet to one end of the water outlet.
[0010] As another preferred solution of the present invention, the outer surface of the inner shell is provided with heat exchange fins.
[0011] As a third preferred solution of the present invention, a sealing cover is further provided between the bearing seat body and the upper and lower ends of the sliding bearing.
[0012] As a fourth preferred solution of the present invention, a sewage outlet communicating with the cooling chamber is provided on the lower connecting flange.
[0013] As a fifth preferred solution of the present invention, a temperature measuring channel is further provided on the outer shell, and the temperature measuring channel passes through the cooling cavity and is communicated with the gap between the inner shell and the sliding bearing.
[0014] The beneficial effects of the utility model: the efficient heat conduction of the utility model makes its application range wider, reliable and durable, easy to install and maintain, clean and beautiful, effectively reduces the labor intensity of workers, and also reduces on-site maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the present utility model.
[0016] Figure 2 It is a front view of the present utility model.
[0017] Figure 3 It is a structural schematic diagram of the utility model after removing the upper flange.
[0018] Figure 4 It is a structural diagram of a half bearing seat.
[0019] In the accompanying drawings, 1 is the bearing seat body, 2 is the sealing cover, 3 is the sliding bearing, 4 is the partition, 5 is the connecting flange, 6 is the bolt assembly, 7 is the connecting plate, 8 is the water outlet, 9 is the temperature measuring channel, 10 is the half bearing seat, 11 is the outer shell, 12 is the through hole, 13 is the oil injection channel, 14 is the heat exchange plate, 15 is the inner shell, 16 is the sewage outlet, 17 is the water inlet, 18 is the first grid, 19 is the second grid, 20 is the third grid, 21 is the boss, and 22 is the cooling chamber. DETAILED DESCRIPTION
[0020] The utility model includes a bearing seat body 1 and a sliding bearing 3, and is characterized in that: the bearing seat body 1 includes an inner shell 15 and an outer shell 11, and the inner shell 15 and the outer shell 11 are provided with connecting flanges 5 at the upper and lower ends, and the sliding bearing 3 is arranged in the inner shell 15; a cooling chamber 22 is set between the inner shell 15, the outer shell 11 and the connecting flange 5, and the outer shell 11 is provided with a water inlet 17 and a water outlet 8 of the cooling chamber 22; the outer shell 11 is also provided with an oil injection channel 13, and the oil injection channel 13 passes through the cooling chamber 22 and is connected with the gap between the inner shell 15 and the sliding bearing 3.
[0021] As a preferred solution of the present invention, the inner shell 15, outer shell 11 and connecting flange 5 of the bearing seat body 1 are all configured to be composed of two semicircular structures; a half bearing seat 10 is composed of half of the inner shell 15, the outer shell 11 and the connecting flange 5.
[0022] Furthermore, connecting plates 7 are provided at both ends of the inner shell 15 of the half bearing seat 10 , and the two half bearing seats 10 are connected by the connecting plates 7 and the bolt assembly 6 to form the bearing seat body 1 .
[0023] Furthermore, both ends of the semicircular outer shell 11 are connected to the connecting plates 7 at both ends of the inner shell 15 ; and the water inlet 17 and the water outlet 8 are provided on the two semicircular outer shells 11 .
[0024] Furthermore, a partition 4 is provided outside the inner shell 15 to divide the cooling chamber 22 into compartments, and a through hole 12 is provided on the partition 4; the water inlet 17 is provided at the lower part of the cooling chamber 22 at one end of the compartment, and the water outlet 8 is provided at the upper part of the cooling chamber 22 at the other end of the compartment; when the number of compartments is an odd number greater than 2, the through holes 12 on the multiple partitions 4 are alternately provided up and down from one end of the water inlet 17 to one end of the water outlet 8.
[0025] As another preferred solution of the present invention, a heat exchange fin 14 is provided on the outer surface of the inner shell 15 .
[0026] As a third preferred solution of the present invention, a sealing cover 2 is further provided between the upper and lower ends of the bearing seat body 1 and the sliding bearing 3 .
[0027] As a fourth preferred solution of the present invention, a sewage outlet 16 communicating with the cooling chamber 22 is provided on the lower connecting flange 5 .
[0028] As a fifth preferred solution of the present invention, a temperature measuring channel 9 is further provided on the outer shell, and the temperature measuring channel 9 passes through the cooling cavity 22 and communicates with the gap between the inner shell 15 and the sliding bearing 3.
[0029] As a sixth preferred solution of the present invention, bosses 21 are provided at the upper and lower ends of the inner surface of the inner shell 15 , and the bosses 21 match with the outer surface of the sliding bearing 3 .
[0030] The half-bearing seat 10 has a double-shell structure, forming a closed chamber within it. The closed chambers of the two bearing seat bodies 1 are independent of each other and are each equipped with a water inlet and outlet pipe. The provision of connecting holes at different heights not only increases the cooling water's travel distance, but also allows the newly injected cooling water to propel the liquid after heat exchange. After water flows out of the outlet pipe, the liquid level in each chamber remains relatively stable, completely immersing the heat exchange fins 14 circumferentially distributed on the surface of the inner shell 15 in each chamber below the liquid surface. The large number of heat exchange fins 14 increases the contact area with the cooling water, improving heat exchange efficiency. Complete immersion below the liquid surface helps slow rust and reduce the risk of internal blockage. A drain port 16 is provided at the bottom of each chamber to regularly discharge internal dirt. Two bosses 21 are provided on the mating surface between the half-bearing seat 10 and the sliding bearing 3, allowing the sliding bearing 3 to fit tightly with it and be fixed within the bearing seat body 1. The two bosses 21 of the half-bearing seat 10 increase the contact area between the two, improving heat exchange efficiency.
[0031] Embodiment: The present invention comprises two halves of a bearing seat 10, which are assembled via a bolt assembly 6 to form the main body of the bearing seat body 1. Upper and lower bosses 21 are provided on the inner surface of the inner shell 15, and the bosses 21 secure the sliding bearing 3 within the inner shell 15. The sealing cover 2 and the gland cooperate with the upper and lower connecting flanges 5 of the bearing seat body 1. The half bearing seat 10 comprises an inlet pipe, an outer shell 11, a partition 4, a heat exchange fin 14, an outlet pipe, an upper flange, a connecting plate 7, and a lower flange. The lower flange has a drain outlet 16. The difference between the two halves of the bearing seat 10 is that one half of the bearing seat 10 is provided with two oil injection channels 13 for grease-filling the sliding bearing 3, while the other half of the bearing seat 10 is provided with a temperature measurement channel 9 for measuring the temperature of the sliding bearing 3.
[0032] The two halves of the bearing seat 10 have similar main internal structures and the same functions.
[0033] Preparation stage: Cooling water enters the first compartment 18 of the cooling chamber 22 of the half-bearing seat 10 from the water inlet pipe and is blocked by the partition 4. A long waist-shaped through-hole 12 is opened above the partition 4. The liquid level gradually rises to the through-hole 12 and overflows into the second compartment. The through-hole 12 on the partition 4 between the second compartment 19 and the third compartment 20 is at a lower height. The water at the bottom of the second compartment 19 enters the bottom of the third compartment 20 through the through-hole 12 of the partition 4. The liquid level in the third compartment 20 rises to the water outlet pipe and flows out of the half-bearing seat 10. The liquid level inside the half-bearing seat 10 reaches stability. At this time, the heat exchange fins 14 are completely immersed below the liquid level, completing the preparation stage.
[0034] Operational Phase: During operation, newly introduced cooling water continuously enters the first compartment 18 and is pushed upward from the bottom of the first compartment 18. As it rises, it contacts the heat exchange fins 14 and the inner shell, exchanging heat. Upon reaching the top of the first compartment 18, it passes through the through-holes 12 above the partition 4 and enters the second compartment 19, where it contacts the heat exchange fins 14 and the inner shell, exchanging heat. The water in the second compartment 19 then passes through the through-holes 12 at the bottom of the partition 4 and enters the third compartment 20, where it contacts the heat exchange fins 14 and the inner shell, completing the heat exchange. The water then exits the half-bearing housing 10 through the outlet pipe. During on-site operation, the preparation and operation phases can be combined into one phase.
[0035] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the scope of protection of the present invention.
Claims
1. A double-shell sliding bearing seat for a tower mill, comprising a bearing seat body (1) and a sliding bearing (3), characterized in that: The bearing seat body (1) includes an inner shell (15) and an outer shell (11), and the inner shell (15) and the outer shell (11) are provided with connecting flanges (5) at the upper and lower ends, and the sliding bearing (3) is arranged in the inner shell (15); a cooling cavity (22) is provided between the inner shell (15), the outer shell (11) and the connecting flange (5), and a water inlet (17) and a water outlet (8) of the cooling cavity (22) are provided on the outer shell (11); an oil injection channel (13) is also provided on the outer shell (11), and the oil injection channel (13) passes through the cooling cavity (22) and is communicated with the gap between the inner shell (15) and the sliding bearing (3).
2. The double-shell sliding bearing seat of a tower mill according to claim 1, characterized in that: The inner shell (15), outer shell (11) and connecting flange (5) of the bearing seat body (1) are all configured as a combination of two semicircular structures; a half bearing seat (10) is formed by half of the inner shell (15), the outer shell (11) and the connecting flange (5).
3. The double-shell sliding bearing seat of a tower mill according to claim 2, characterized in that: Connecting plates (7) are provided at both ends of the inner shell (15) of the half bearing seat (10), and the two half bearing seats (10) are connected via the connecting plates (7) and the bolt assembly (6) to form a bearing seat body (1).
4. The double-shell sliding bearing seat of a tower mill according to claim 3, characterized in that: The two ends of the semicircular outer shell (11) are connected to the connecting plates (7) at the two ends of the inner shell (15); the water inlet (17) and the water outlet (8) are arranged on the two semicircular outer shells (11).
5. The double-shell sliding bearing seat of a tower mill according to claim 4, characterized in that: A partition (4) is provided outside the inner shell (15) for dividing the cooling cavity (22) into sections, and a through hole (12) is provided on the partition (4); the water inlet (17) is provided at the lower part of the cooling cavity (22) at one end of the section, and the water outlet (8) is provided at the upper part of the cooling cavity (22) at the other end of the section; when the number of sections is an odd number greater than 2, the through holes (12) on the plurality of partitions (4) are alternately provided up and down from one end of the water inlet (17) to one end of the water outlet (8).
6. The double-shell sliding bearing seat of a tower mill according to claim 1, characterized in that: The outer surface of the inner shell (15) is provided with heat exchange fins (14).
7. The double-shell sliding bearing seat of a tower mill according to claim 1, characterized in that: A sealing cover (2) is further provided between the upper and lower ends of the bearing seat body (1) and the sliding bearing (3).
8. The double-shell sliding bearing seat for a tower mill according to claim 1, characterized in that: The lower connecting flange (5) is provided with a sewage outlet (16) communicating with the cooling chamber (22).
9. The double-shell sliding bearing seat of a tower mill according to claim 1, characterized in that: The outer shell (11) is also provided with a temperature measurement channel (9), which passes through the cooling cavity (22) and is communicated with the gap between the inner shell (15) and the sliding bearing (3).
10. The double-shell sliding bearing seat of a tower mill according to claim 1, characterized in that: Bosses (21) are provided at the upper and lower ends of the inner surface of the inner shell (15), and the bosses (21) are matched with the outer surface of the sliding bearing (3).