Circulating cooling and lubricating device for grinding roller bearing of vertical mill

Abstract

The utility model discloses a vertical mill grinding roller bearing circulating cooling and lubricating device which comprises a lubricating oil storage tank, and a main oil pump is installed at the bottom of the lubricating oil storage tank. The oil outlet end of the main oil pump is connected with an oil supply main pipe, and the other end of the oil supply main pipe is connected with a plurality of oil supply branch pipes; an oil inlet of the lubricating oil storage tank is connected with an oil return main pipe, and the other end of the oil return main pipe is connected with a plurality of oil return branch pipes; an auxiliary oil pump is arranged between the oil supply main pipe and the oil return main pipe. According to the utility model, the auxiliary oil pump is arranged and can increase the circulating speed of lubricating oil on the basis of the main oil pump, so that the quantity of oil flowing through the grinding roller bearing in unit time is increased, and the requirements of rapid cooling and lubrication are met; and by increasing the circulating speed of the lubricating oil and the oil quantity in unit time, heat generated by the grinding roller bearing during working can be more effectively taken away, so that the temperature of the bearing is reduced, the service life of equipment is prolonged, and the performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding roller ball lubrication, in particular to a vertical mill grinding roller bearing circulating cooling and lubrication device. Background Art

[0002] Vertical mill is a grinding equipment that integrates fine crushing, drying, grinding, powder selection and conveying. It is widely used in the grinding and ultra-fine grinding of various solid materials in industries such as cement, building materials, electricity, metallurgy, chemical industry, non-metallic minerals, etc. During the operation of the vertical mill, the roller bearing bears huge working pressure, and due to long-term high-speed operation and heavy-load rolling, the bearing temperature will rise rapidly. Although the traditional oil bath circulation cooling lubrication system can provide a certain degree of lubrication and cooling effect, under high-load working environment, the circulation speed and oil volume of the lubricating oil may not meet the needs of rapid cooling, resulting in excessive bearing temperature, affecting the service life and performance of the equipment.

[0003] Therefore, how to increase the circulation speed of lubricating oil and the amount of oil per unit time and effectively reduce the temperature of grinding roller bearings has become an urgent problem to be solved in the current field of vertical mill technology. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a circulating cooling and lubrication device for a roller bearing of a vertical mill to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A circulating cooling and lubrication device for a grinding roller bearing of a vertical mill comprises a lubricating oil storage tank, wherein a main oil pump is installed at the bottom of the lubricating oil storage tank; an oil inlet end of the main oil pump is connected to an oil outlet of the lubricating oil storage tank, wherein the oil outlet end of the main oil pump is connected to an oil supply main pipe; one end of the oil supply main pipe is connected to the oil outlet end of the main oil pump, and the other end of the oil supply main pipe is connected to a plurality of oil supply branch pipes, wherein each oil supply branch pipe is respectively connected to a grinding roller shaft; the oil inlet of the lubricating oil storage tank is connected to an oil return main pipe, wherein the other end of the oil return main pipe is connected to a plurality of oil return branch pipes, and the return oil branch pipes are respectively connected to corresponding grinding roller shafts; an auxiliary oil pump is arranged between the oil supply main pipe and the oil return main pipe, wherein the oil inlet end of the auxiliary oil pump is connected to the oil return main pipe through a bypass oil inlet pipe, and the oil outlet end of the auxiliary oil pump is connected to the oil supply main pipe through a bypass oil outlet pipe.

[0007] Preferably, a flow controller is provided on the bypass oil outlet pipe of the auxiliary oil pump, wherein a temperature controller is installed in the flow controller.

[0008] Preferably, a roller lubrication cavity is provided inside the grinding roller shaft, wherein an end cover is provided in front of the grinding roller shaft, and a top cover is provided at the end of the grinding roller shaft; the end cover and the top cover cooperate to seal the roller lubrication cavity.

[0009] Preferably, an oil inlet pipe communicating with the roller shaft lubrication cavity is installed on the top cover, wherein the outer wall of the oil inlet pipe is sealed to the top cover; a sealing sleeve is installed at the front end of the oil inlet pipe, wherein an oil inlet nozzle is provided below the sealing sleeve.

[0010] Preferably, the upper end of the oil inlet nozzle passes through the sealing sleeve and is connected to the oil inlet pipe, wherein the other end of the oil inlet nozzle is connected to the oil supply branch pipe.

[0011] Preferably, an oil return pipe is provided in the lumen of the oil inlet pipe, and an oil return nozzle is provided at the front end of the oil return pipe, wherein the oil return nozzle penetrates the sealing sleeve and is connected with the oil return branch pipe.

[0012] Preferably, a compression sleeve is sleeved between the oil return nozzle and the inner wall of the sealing sleeve, wherein a fastening nut is provided on the outer side of one end of the sealing sleeve close to the compression sleeve.

[0013] Preferably, one end of the oil return pipe is sealedly connected to the oil inlet pipe, wherein the other end of the oil return pipe passes through the roller shaft lubrication cavity and extends toward one side of the end cover.

[0014] Preferably, a ventilation pipe is installed on the top cover, one end of the ventilation pipe passes through the top cover and is connected to the roller lubrication cavity, wherein the other end of the ventilation pipe is connected to an air filter.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the utility model provides an auxiliary oil pump, which can increase the circulation speed of the lubricating oil on the basis of the main oil pump, wherein the auxiliary oil pump draws lubricating oil from the oil return main pipe and quickly pumps it into the oil supply main pipe through the bypass oil outlet pipe, thereby increasing the amount of oil flowing through the grinding roller bearing per unit time and meeting the needs of rapid cooling and lubrication; by increasing the circulation speed of the lubricating oil and the amount of oil per unit time, the heat generated by the grinding roller bearing during operation can be more effectively taken away, thereby reducing the bearing temperature, extending the service life of the equipment and improving the performance; at the same time, a flow controller and a temperature controller are provided on the bypass oil outlet pipe of the auxiliary oil pump, and the working state of the auxiliary oil pump can be adjusted in real time according to the temperature and flow rate of the lubricating oil refluxed from the grinding roller bearing, so that cooling and lubrication are more precise and efficient, further improving the cooling and lubrication effects, and the structure is simple and easy to implement, with relatively small changes to the existing equipment, and has high practicality and economic benefits.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural principle block diagram of the utility model;

[0020] Figure 3a , 3b It is a structural schematic diagram of the grinding roller of the utility model;

[0021] Figure 4a , 4b It is a structural schematic diagram of the grinding roller shaft of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the connection between the oil inlet pipe and the oil outlet pipe of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the connection between the oil inlet nozzle and the oil outlet nozzle of the utility model.

[0024] Among them: 1. Lubricating oil storage tank; 2. Main oil pump; 3. Oil supply main pipe; 4. Oil supply branch pipe; 5. Grinding roller shaft; 6. Return oil main pipe; 7. Return oil branch pipe; 8. Auxiliary oil pump; 9. Bypass oil inlet pipe; 10. Bypass oil outlet pipe; 11. Flow controller; 12. Temperature controller; 13. End cover; 14. Top cover; 15. Oil inlet pipe; 16. Sealing sleeve; 17. Oil inlet nozzle; 18. Oil return pipe; 19. Oil return nozzle; 20. Connecting flange; 21. Press sleeve; 22. Fastening nut; 23. Ventilation pipe; 24. Air filter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figures 1 to 6 To achieve the above purpose, the utility model provides the following technical solutions:

[0027] A circulating cooling and lubricating device for a roller bearing of a vertical mill comprises a lubricating oil storage tank 1, wherein a main oil pump 2 is installed at the bottom of the lubricating oil storage tank 1; an oil inlet end of the main oil pump 2 is connected to an oil outlet of the lubricating oil storage tank 1, wherein an oil supply pipe 3 is connected to the oil outlet end of the main oil pump 2; one end of the oil supply pipe 3 is connected to the oil outlet end of the main oil pump 2, and the other end of the oil supply pipe 3 is connected to a plurality of oil supply branch pipes 4, wherein each oil supply branch pipe 4 is respectively connected to a roller shaft 5; the lubricating oil storage tank The oil inlet of the tank 1 is connected to an oil return pipe 6, wherein the other end of the oil return pipe 6 is connected to a plurality of oil return branch pipes 7, and the oil return branch pipes 7 are respectively connected to the corresponding grinding roller shafts 5; an auxiliary oil pump 8 is arranged between the oil supply pipe 3 and the oil return pipe 6, wherein the oil inlet end of the auxiliary oil pump 8 is connected to the oil return pipe 6 through a bypass oil inlet pipe 9, and the oil outlet end of the auxiliary oil pump 8 is connected to the oil supply pipe 3 through a bypass oil outlet pipe 10; the extracted lubricating oil is pumped to the oil supply pipe 3 through the main oil pump 2, The oil supply main pipe 3 transports the lubricating oil to the bearings of each grinding roller shaft 5 through multiple oil supply branch pipes 4 to provide lubrication for the bearings; the used lubricating oil flows out of the grinding roller shaft 5 and flows back through the respectively connected return oil branch pipes 7, and multiple return oil branch pipes 7 are gathered into the return oil main pipe 6, and then flows back to the lubricating oil storage tank 1, so as to complete the recycling of the lubricating oil; by arranging an auxiliary oil pump 8 between the oil supply main pipe 3 and the return oil main pipe 6, the auxiliary oil pump 8 can increase the circulation speed of the lubricating oil on the basis of the main oil pump 2, wherein the auxiliary oil pump 8 draws lubricating oil from the return oil main pipe 6 and quickly pumps it into the oil supply main pipe 3 through the bypass oil outlet pipe 10, thereby increasing the amount of oil flowing through the grinding roller shaft 5 per unit time, and meeting the needs of rapid cooling and lubrication; by increasing the circulation speed of the lubricating oil and the amount of oil per unit time, the heat generated by the grinding roller shaft 5 during operation can be more effectively taken away, thereby reducing the bearing temperature, extending the service life of the equipment and improving the performance.

[0028] Please refer to Figure 1 , Figure 2 As an embodiment of the utility model, a flow controller 11 is provided on the bypass oil outlet pipe 10 of the auxiliary oil pump 8, wherein a temperature controller 12 is installed in the flow controller 11.

[0029] In the above-described scheme, the flow controller 11 is used to detect the flow of the bypass oil outlet pipe 10 in real time, and adjust the working state of the auxiliary oil pump 8, such as the speed or power of the pump, as needed to ensure that the lubricating oil is delivered to the oil supply main pipe 3 at an appropriate speed and amount. If the flow is too low, the flow controller 11 can send a signal to increase the output of the auxiliary oil pump 8; if the flow is too high, the output can be reduced accordingly to maintain the flow balance and stability in the system; the temperature controller 12 is a component installed in the flow controller 11, which is used to monitor the temperature of the lubricating oil passing through the bypass oil outlet pipe 10 and adjust the working state of the auxiliary oil pump 8 according to a preset temperature range; by arranging the flow controller 11 and the temperature controller 12 on the bypass oil outlet pipe 10 of the auxiliary oil pump 8, the working state of the auxiliary oil pump 8 can be adjusted in real time according to the temperature and flow of the lubricating oil refluxed from the grinding roller shaft 5, making the cooling and lubrication more accurate and efficient, further improving the cooling and lubrication effects, and ensuring that the grinding roller bearings are supplied with an appropriate amount of lubricating oil, thereby extending the service life of the equipment and optimizing its performance.

[0030] Please refer to Figure 4a , Figure 4b As an embodiment of the utility model, a hollow roller lubrication cavity is provided inside the grinding roller shaft 5, wherein an end cover 13 is provided in front of the grinding roller shaft 5, and a top cover 14 is provided at the end of the grinding roller shaft 5; the end cover 13 and the top cover 14 cooperate to seal the roller lubrication cavity.

[0031] In the above-described scheme, the grinding roller shaft 5 is designed to be hollow inside, forming a roller lubrication cavity, which is convenient for the lubricating oil to flow directly into the grinding roller shaft 5, providing continuous and direct lubrication for the bearings. The end cover 13 and the top cover 14 are used to tightly seal the two ends of the roller lubrication cavity to prevent the lubricating oil from leaking, and seal the roller lubrication cavity, thereby ensuring that the lubricating oil can effectively circulate inside the grinding roller shaft 5, maintaining the continuity of bearing lubrication.

[0032] Please refer to Figure 5 , Figure 6As an embodiment of the utility model, an oil inlet pipe 15 connected to the roller lubrication cavity is installed on the top cover 14, wherein the outer wall of the oil inlet pipe 15 is sealed with the top cover 14; a sealing sleeve 16 is installed at the front end of the oil inlet pipe 15, wherein an oil inlet nozzle 17 is provided below the sealing sleeve 16; the upper end of the oil inlet nozzle 17 passes through the sealing sleeve 16 and is connected to the oil inlet pipe 15, the oil inlet nozzle 17 and the oil inlet pipe 15 are perpendicular to each other, wherein the other end of the oil inlet nozzle 17 is connected to the oil supply branch pipe 4; an oil return pipe 1 is provided in the lumen of the oil inlet pipe 15 8, an oil return nozzle 19 is provided at the front end of the oil return pipe 18, wherein the oil return nozzle 19 passes through the sealing sleeve 16 and is connected to the oil return branch pipe 7; one end of the oil return pipe 18 is sealed and connected to the outer wall of the oil inlet pipe 15, wherein the other end of the oil return pipe 18 passes through the roller shaft lubrication cavity and is connected to the inner wall of the end cover 13 through a connecting flange 20, so that the oil return pipe 18 can absorb the lubricating oil in the roller shaft lubrication cavity; a pressing sleeve 21 is sleeved between the oil return nozzle 19 and the inner wall of the sealing sleeve 16, wherein a fastening nut 22 is provided on the outer side of one end of the sealing sleeve 16 close to the pressing sleeve 21.

[0033] In the above-mentioned scheme, an oil inlet pipe 15 connected to the roller lubrication cavity is installed on the top cover 14, and a sealing sleeve 16 is installed at the front end of the oil inlet pipe 15, and an oil inlet nozzle 17 is arranged below the sealing sleeve 16, wherein the other end of the oil inlet nozzle 17 is connected to the oil supply branch pipe 4. When the oil supply branch pipe 4 transports lubricating oil, the lubricating oil enters the oil inlet pipe 15 through the oil inlet nozzle 17, and then flows into the roller lubrication cavity to provide lubrication for the bearing, wherein the outer wall of the oil inlet pipe 15 and the top cover 14 are sealed to ensure that the lubricating oil will not leak here; an oil return pipe 18 is also arranged in the lumen of the oil inlet pipe 15, and the oil return pipe 18 is used to draw back the used lubricating oil from the roller lubrication cavity, wherein an oil return nozzle 19 is arranged at the front end of the oil return pipe 18, and the oil return nozzle 19 passes through the sealing sleeve 16 and is connected to the oil return branch pipe 7, so as to facilitate use The used lubricating oil flows out from the roller lubrication cavity through the oil return pipe 18 and the oil return nozzle 19, and then flows back to the lubricating oil storage tank 1 through the oil return branch pipe 7, thereby completing the recycling of the lubricating oil; a compression sleeve 21 is sleeved between the oil return nozzle 19 and the inner wall of the sealing sleeve 16 to enhance the sealing effect between the oil return nozzle 19 and the sealing sleeve 16; a fastening nut 22 is provided on the outer side of one end of the sealing sleeve 16 close to the compression sleeve 21, and the fastening nut 22 is used to fix and adjust the tightness of the sealing sleeve 16 to further ensure the sealing performance; a compact and efficient lubricating oil inlet and outlet structure is realized by installing the oil inlet pipe 15 and the oil return pipe 18 on the top cover 14, which not only ensures the full lubrication of the bearings, but also realizes the recycling of the lubricating oil. At the same time, the strict sealing design also prevents the leakage of oil, thereby ensuring the stable operation of the vertical mill.

[0034] See also Figure 4a As an embodiment of the utility model, a vent pipe 23 is installed on the top cover 14, one end of the vent pipe 23 passes through the top cover 14 and is connected to the roller lubrication cavity, wherein the other end of the vent pipe 23 is connected to an air filter 24.

[0035] In the above-described scheme, by installing a vent pipe 23 on the top cover 14 and installing an air filter 24 on the top of the vent pipe 23, the gas in the roller lubrication chamber is easily exchanged with the external air; when the lubricating oil in the roller lubrication chamber is heated or cooled during operation, the air in the chamber may expand or contract, thereby causing pressure changes, wherein the vent pipe 23 allows the air flow caused by the temperature change to help maintain the pressure balance in the roller lubrication chamber and prevent damage to the bearing and the sealing structure due to excessively high or low pressure; the main function of the air filter 24 is to prevent dust, particulate matter and other contaminants from entering the roller lubrication chamber. Before the external air enters the roller lubrication chamber through the vent pipe 23, the air filter 24 will filter out the impurities therein to ensure the cleanliness of the air entering the chamber, thereby extending the service life of the bearing and improving the overall operating efficiency of the vertical mill.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A circulating cooling and lubricating device for a roller bearing of a vertical mill, comprising a lubricating oil storage tank (1), wherein a main oil pump (2) is installed at the bottom of the lubricating oil storage tank (1); characterized in that: The oil inlet of the main oil pump (2) is connected to the oil outlet of the lubricating oil storage tank (1), wherein the oil outlet of the main oil pump (2) is connected to an oil supply pipe (3); one end of the oil supply pipe (3) is connected to the oil outlet of the main oil pump (2), and the other end of the oil supply pipe (3) is connected to a plurality of oil supply branch pipes (4), wherein each oil supply branch pipe (4) is respectively connected to a grinding roller shaft (5); the oil inlet of the lubricating oil storage tank (1) is connected to an oil return pipe (6), wherein the other end of the oil return main pipe (6) is connected to a plurality of oil return branch pipes (7), and the oil return branch pipes (7) are respectively connected to the corresponding grinding roller shafts (5); an auxiliary oil pump (8) is provided between the oil supply main pipe (3) and the oil return main pipe (6), wherein the oil inlet end of the auxiliary oil pump (8) is connected to the oil return main pipe (6) through a bypass oil inlet pipe (9), and the oil outlet end of the auxiliary oil pump (8) is connected to the oil supply main pipe (3) through a bypass oil outlet pipe (10).

2. A circulating cooling and lubrication device for roller bearings of a vertical mill according to claim 1, characterized in that: A flow controller (11) is provided on the bypass oil outlet pipe (10) of the auxiliary oil pump (8), wherein a temperature controller (12) is installed in the flow controller (11).

3. The circulating cooling and lubrication device for roller bearing of a vertical mill according to claim 1, characterized in that: A roller lubrication cavity is provided inside the grinding roller shaft (5), wherein an end cover (13) and a top cover (14) are respectively installed at both ends of the grinding roller shaft (5).

4. A circulating cooling and lubrication device for roller bearings of a vertical mill according to claim 3, characterized in that: An oil inlet pipe (15) communicating with the roller shaft lubrication cavity is installed on the top cover (14), wherein the outer wall of the oil inlet pipe (15) and the top cover (14) are sealed; a sealing sleeve (16) is installed at the front end of the oil inlet pipe (15), wherein an oil inlet nozzle (17) is provided below the sealing sleeve (16).

5. A circulating cooling and lubrication device for roller bearings of a vertical mill according to claim 4, characterized in that: The upper end of the oil inlet nozzle (17) passes through the sealing sleeve (16) and is connected to the oil inlet pipe (15), wherein the other end of the oil inlet nozzle (17) is connected to the oil supply branch pipe (4).

6. A circulating cooling and lubrication device for roller bearings of a vertical mill according to claim 4, characterized in that: An oil return pipe (18) is arranged in the lumen of the oil inlet pipe (15), and an oil return nozzle (19) is arranged at the front end of the oil return pipe (18), wherein the oil return nozzle (19) penetrates the sealing sleeve (16) and is connected to the oil return branch pipe (7).

7. A circulating cooling and lubrication device for roller bearings of a vertical mill according to claim 6, characterized in that: A pressing sleeve (21) is sleeved between the oil return nozzle (19) and the inner wall of the sealing sleeve (16), wherein a fastening nut (22) is provided on the outer side of one end of the sealing sleeve (16) close to the pressing sleeve (21).

8. The circulating cooling and lubrication device for roller bearing of a vertical mill according to claim 3, characterized in that: A vent pipe (23) is installed on the top cover (14), one end of the vent pipe (23) passes through the top cover (14) and is connected to the roller shaft lubrication cavity, wherein the other end of the vent pipe (23) is connected to an air filter (24).

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