Cooling device of lubricating oil station

Abstract

The utility model relates to the technical field of cooling devices, in particular to a cooling device of a lubricating oil station, which comprises a circulating pipeline and a gradient cooling component, the circulating pipeline comprises a conveying part and at least two cooling parts communicated with the conveying part, and a water pump is arranged on the circulating pipeline and used for driving lubricating oil to circulate in the circulating pipeline. The water pump drives the lubricating oil to flow in the circulating pipeline, the lubricating oil sequentially passes through at least two cooling parts along the flowing direction, the cooling part is arranged in the circulating pipeline, the cooling part is used for cooling and lubricating the vertical grinding roller, and the gradient cooling assembly comprises a cooling container used for containing cooling liquid and a refrigerating part used for cooling the cooling liquid in the cooling container. The cooling container outside the cooling part is refrigerated by the refrigerating part connected with the cooling container, and the temperature is gradually reduced along the flowing direction of the lubricating oil, so that the lubricating oil passing through the cooling part is subjected to gradient cooling, and the lubricating effect is prevented from being influenced by shock cooling of the lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, and in particular to a cooling device for a lubricating oil station. Background Technology

[0002] When bearings in industrial equipment operate at high speeds, they generate a large amount of heat. For example, in vertical grinding rollers, the temperature of the lubricating oil used in the bearings will rise sharply during operation, and the oil film thickness will be significantly reduced. This can easily lead to boundary lubrication or even dry friction, resulting in bearing burns, pitting, and other failure modes. Therefore, cooling the lubricating oil used in vertical grinding rollers is crucial.

[0003] In existing cooling devices, high-temperature lubricating oil is typically pumped into the cooling device to cool the lubricating oil. The high-temperature lubricating oil comes into direct contact with the low-temperature coolant. Sudden cooling can cause additives in the lubricating oil, such as anti-wear agents and antioxidants, to precipitate or become ineffective, affecting the lubrication effect. This can lead to a sudden increase in the viscosity of the lubricating oil, potentially causing a sudden increase in the pump load or even clogging of precision oil passages.

[0004] Therefore, based on the above situation, it is necessary to design a cooling device for a lubricating oil station to solve the above problems. Utility Model Content

[0005] This invention provides a cooling device for a lubricating oil station to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A cooling device for a lubricating oil station includes a circulation pipeline and a gradient cooling assembly. The circulation pipeline includes a conveying section and at least two cooling sections connected to the conveying section. A water pump is provided on the circulation pipeline to drive the lubricating oil to circulate within the circulation pipeline, thereby achieving cooling and lubrication of the vertical grinding roller. The gradient cooling assembly includes a cooling container for holding coolant and a refrigeration component for cooling the coolant in the cooling container. The cooling container is located outside the cooling section and forms a heat exchange space with the cooling section. The refrigeration component is used to circulate coolant at different temperatures into the heat exchange space, and the coolant temperature decreases in a stepwise manner along the flow direction of the lubricating oil.

[0008] Preferably, it also includes auxiliary cooling components corresponding to the cooling containers one by one. The auxiliary cooling components include cooling branch pipes and valves provided on the cooling branch pipes. The input end and output end of the cooling branch pipes are respectively connected to the output end and input end of the cooling unit.

[0009] Preferably, the cooling section is meandering.

[0010] Preferably, the cooling assembly also includes a controller electrically connected to the valve, and a temperature sensor electrically connected to the controller is provided on the cooling assembly, the temperature sensor being located downstream of the gradient cooling assembly.

[0011] Preferably, the cooling section and the conveying section are connected by a flange.

[0012] Preferably, the cooling container is wrapped with thermal insulation material.

[0013] The beneficial effects of this utility model are as follows: the lubricating oil is driven by a water pump to flow in the circulation pipeline. The lubricating oil passes through at least two cooling sections in sequence along the flow direction. The cooling container outside the cooling section is cooled by the refrigeration component connected to it, and the temperature gradually decreases along the flow direction of the lubricating oil. This provides gradient cooling for the lubricating oil passing through the cooling section, avoiding sudden cooling of the lubricating oil and affecting the lubrication effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 Schematic diagram of the three-dimensional structure provided by this utility model Figure 1 ;

[0016] Figure 2 Schematic diagram of the three-dimensional structure provided by this utility model Figure 2 ;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention.

[0018] In the diagram, 1 is the circulation pipeline; 11 is the conveying section; 12 is the cooling section; 2 is the water pump; 3 is the vertical grinding roller; 4 is the gradient cooling assembly; 41 is the cooling container; 42 is the refrigeration component; 5 is the auxiliary cooling assembly; 51 is the cooling branch pipe; 52 is the valve; 6 is the controller; and 7 is the temperature sensor. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] Reference Figures 1-3As shown, a cooling device for a lubricating oil station includes a circulation pipeline 1 with a water pump 2 installed on it. In use, the circulation pipeline 1 is connected to the grinding roller oil station of the vertical mill roller 3. The grinding roller oil station is a key auxiliary system of the vertical mill and mainly consists of an oil tank, oil pump, filter, cooler, valves, pipelines, etc. Its core function is to provide stable lubricating oil and hydraulic power directly to key components such as bearings and sealing devices of the grinding roller, forming a circulation loop for the lubricating oil. The lubricating oil enters the bearing cavity through the oil inlet at the bottom or side of the bearing housing. When the bearing is in use, the lubricating oil heats up. The oil outlet is located at the top of the bearing housing. The water pump 2 drives the lubricating oil to circulate in the circulation pipeline 1 for cooling and lubrication. The above is the prior art and is not the inventive point of this solution, and will not be elaborated further here.

[0021] However, high-temperature lubricating oil can reduce the service life of bearings. To gradually cool the lubricating oil, the circulation pipeline 1 includes a conveying section 11 and at least two cooling sections 12 connected to the conveying section 11. The lubricating oil is gradually cooled by passing through the at least two cooling sections 12. However, to prevent a sudden drop in lubricating oil temperature, a gradient cooling assembly 4 is also provided. The gradient cooling assembly 4 includes a cooling container 41 for holding coolant and a refrigeration component 42 for cooling the coolant in the cooling container 41. The cooling container 41 is located outside the cooling section 12 and forms a heat exchange space with the cooling section 12. The coolant can be a low-freezing-point liquid medium such as ethylene glycol aqueous solution. The refrigeration component 42 can be a compression refrigeration system. The compressor compresses the refrigerant into a high-temperature, high-pressure gas, which is then condensed by the condenser. The refrigerant condenses into a liquid and, after being depressurized by a throttling valve, enters the evaporator. There, it absorbs heat and evaporates, thus lowering the temperature of the surrounding ethylene glycol aqueous solution. The evaporated refrigerant gas is then drawn into the compressor and circulates repeatedly in the heat exchange space for cooling. Following the direction of lubricant flow, the temperature of the coolant cooled by the cooling element 42 in each heat exchange space varies, gradually decreasing. For example, if the lubricant needs to be cooled to 40 degrees Celsius, three cooling sections 12 are provided. The cooling elements 42 along the lubricant flow direction sequentially cool the coolant to 80 degrees Celsius, 60 degrees Celsius, and 40 degrees Celsius, achieving gradient cooling. This gradually lowers the temperature of the lubricant flowing through the cooling sections 12, avoiding the sudden temperature drop and reduced lubricant performance caused by the sudden contact between high-temperature lubricant and low-temperature environment during traditional cooling processes.

[0022] Reference Figures 1-3As shown, furthermore, to improve the cooling efficiency of the lubricating oil under heavy loads, the vertical grinding roller 3 also includes an auxiliary cooling assembly 5 corresponding to the cooling container 41. The auxiliary cooling assembly 5 includes a cooling branch pipe 51 and a valve 52 installed on the cooling branch pipe 51. The input and output ends of the cooling branch pipe 51 are respectively connected to the output and input ends of the cooling section 12. When the vertical grinding roller 3 is grinding ore with high hardness, the bearings on the vertical grinding roller 3 bear a large load, and the heat generated by the bearings surges. At this time, the valve 52 on the cooling branch pipe 51 is opened. After passing through the first cooling section 12, some of the high-temperature lubricating oil mixes with the high-temperature lubricating oil from the input end of the cooling section 12 through the cooling branch pipe 51. The temperature of the lubricating oil entering the cooling section 12 is reduced, and then it is cooled again in the first cooling section 12, which is equivalent to pre-treating the high-temperature lubricating oil entering the cooling section 12. Then the lubricating oil flowing out of the first cooling section 12 enters the second cooling section 12, and is mixed and pre-treated by the cooling branch pipe 51. This process is repeated to pre-treat the lubricating oil entering the cooling section 12 in advance. This not only reduces the temperature of the lubricating oil entering the cooling section 12 in advance, but also allows the lubricating oil to stay for a longer time during the overall cooling process, improving the cooling efficiency. Even under high load conditions, the circulating lubricating oil can be cooled to a suitable temperature before it can be used.

[0023] Reference Figure 3 As shown, further, in order to further improve the efficiency of lubricating oil cooling, the cooling section 12 is meandering, and the meandering shape can be spiral, serpentine, etc. Within the same flow space, the meandering shape can increase the actual length of the cooling section 12, directly increasing the contact path between the lubricating oil and the coolant, and increasing the rate of lubricating oil temperature reduction.

[0024] Reference Figures 1-3 As shown, to further improve ease of use, a controller 6 electrically connected to valve 52 is also included. A temperature sensor 7 electrically connected to controller 6 is provided on the cooling pipe. The temperature sensor 7 is located downstream of the gradient cooling assembly 4. During use, when the cooled lubricating oil flows to the position of temperature sensor 7, temperature sensor 7 monitors the temperature of the lubricating oil in real time. If the temperature of the lubricating oil fails to cool to the temperature threshold required by the vertical grinding roller 3, temperature sensor 7 transmits a signal to controller 6. Controller 6 controls valve 52 to open, starts the auxiliary cooling assembly 5, improves cooling efficiency, and automates the adjustment to ensure that the lubricating oil is always in the optimal working temperature range (such as 40~50℃), extending the lubricating oil life while improving lubrication efficiency.

[0025] Reference Figures 1-3As shown, furthermore, in order to facilitate the maintenance of the gradient cooling assembly 4, the cooling section 12 and the conveying section 11 are connected by a flange. The flange connection decomposes the cooling section 12 and the conveying section 11 into independent modules. During installation, the connection can be completed simply by aligning the bolt holes and tightening the bolts, which can quickly complete the assembly of the components. At the same time, the flange connection provides uniform clamping force through the bolt group, and combined with the sealing gasket, it can form a high-strength sealing interface that can withstand the pressure fluctuations and mechanical vibrations of the lubricating oil circulation system.

[0026] Reference Figures 1-2 As shown, in order to control the temperature of the coolant and reduce thermal interference, the exterior of the cooling container 41 is wrapped with insulation material, such as polyurethane foam or rock wool. Low-temperature coolant flows inside the cooling container 41. If exposed to a high-temperature environment, external heat will be conducted to the interior through the container wall, causing the coolant temperature to rise and weakening the cooling capacity of the lubricating oil.

Claims

1. A cooling device for a lubricating oil station, characterized in that The utility model relates to a kind of cooling device of vertical mill, including, Circulation pipeline (1), the circulation pipeline (1) includes conveying part (11) and at least two cooling parts (12) being communicated with conveying part (11), water pump (2) is equipped on the circulation pipeline (1), for driving lubricating oil circulation in circulation pipeline (1), realize the cooling lubrication of vertical mill roller (3); Gradient cooling assembly (4), the gradient cooling assembly (4) includes cooling container (41) for containing cooling liquid and refrigeration piece (42) for cooling cooling liquid in cooling container (41), the cooling container (41) is located outside cooling part (12) and forms heat exchange space with cooling part (12), the refrigeration piece (42) is used to circulate into cooling liquid with different temperature in heat exchange space, and cooling liquid temperature is ladder type decreasing along lubricating oil flow direction.

2. A cooling device for a lubricating oil station according to claim 1, characterized in that Also include one-to-one correspondence with cooling container (41) auxiliary cooling assembly (5), the auxiliary cooling assembly (5) includes cooling branch pipe (51) and valve (52) being located on cooling branch pipe (51), the input end and the output end of cooling branch pipe (51) are respectively communicated with the output end and the input end of cooling part (12).

3. A cooling device for a lubricating oil station according to claim 1, characterized in that The cooling part (12) is meandering.

4. A cooling device for a lubricating oil station according to claim 1, characterized in that The cooling part (12) and conveying part (11) are connected by flange.

5. A cooling device for a lubricating oil station according to claim 1, characterized in that The outside of the cooling container (41) is wrapped with thermal insulation material.

Images