Integrated liquid cooling and lubrication system for electric vibratory cylinders in crystallizers

Abstract

This invention relates to a comprehensive liquid cooling and lubrication system for a crystallizer vibrating electric cylinder, comprising a thin oil station, a main oil supply pipeline, a main return oil pipeline, and return oil branch pipes. The electric cylinder body internally houses a servo motor cooling circuit and a cooling and lubrication circuit. The thin oil station includes an oil tank, thermometer, level gauge, main oil supply pump, in-station circulating filter cooling pump, low-pressure filter, high-efficiency heat exchanger, and control box. The main oil supply pipeline includes a front section and a rear section, with the front section being a low-level pipeline and the rear section a high-level pipeline. The diameter of the rear section is larger than that of the front section. The front section connects to the outlet of the thin oil station, and the rear section connects to the front section. This invention's comprehensive liquid cooling and lubrication system has a low failure rate, low maintenance difficulty and cost, good lubrication and cooling effects, is environmentally friendly with low noise, and can ensure long-term stable operation of the crystallizer vibrating electric cylinder.

Description

Technical Field

[0001] This invention relates to the field of continuous casting machines in the metallurgical industry, and more specifically, to a comprehensive liquid cooling and lubrication system for a vibrating electric cylinder of a crystallizer. Background Technology

[0002] In the modern steel industry, continuous casting is a comprehensive technology that transforms molten steel from a high-temperature liquid state into a solid steel billet. The crystallizer is the key equipment in the continuous casting machine for solidifying and forming molten steel, while the vibration device is an important piece of equipment to ensure the continuous and stable pulling out of the formed steel billet in the crystallizer. Generally, a continuous casting machine has multiple vibration devices operating simultaneously. Servo electric cylinders are one of the power sources for vibration devices (other types include hydraulic cylinders, motor reducers, electro-hydraulic direct-drive cylinders, etc.), and are currently widely used in high-end continuous casting machines in major steel mills.

[0003] However, electric cylinders operate in harsh environments (high temperature, high humidity, and high dust levels), and need to operate continuously for more than 48 hours at a rate of 200-350 positive and negative torques per minute. This places stringent demands on the cooling and lubrication of electric cylinders. In real-world conditions, insufficient cooling and lubrication can lead to production accidents such as cylinder seizure and vibration device malfunction.

[0004] The mechanical part of the vibratory electric cylinder mainly consists of the cylinder body (see...) Figure 1 Components A and B), lead screw (see Figure 1 Component D), motor compartment (see Figure 1 Component F) and motor (see Figure 1 It consists of components (E) and auxiliary systems. The auxiliary systems include two categories: cooling systems and lubrication systems.

[0005] The cooling system includes water-cooled piping and air-cooled piping, with the water-cooled piping directly connected to the cylinder block (see...). Figure 1 Components A and B) and motor housing (optional, see appendix) Figure 1 Part C is cooled by air cooling of the motor housing (see attached). Figure 1 The motor inside (F) is cooled by air blowing. See CN209839124U and CN217018518U.

[0006] The lubrication system supplies oil to components such as the lead screw and bearings inside the cylinder through a thin oil pipeline inlet or by storing oil in the cavity. See CN209839124U.

[0007] The existing auxiliary systems (cooling and lubrication) have the following problems:

[0008] 1) The system involves two or three types of pipelines, including water pipes, air pipes, and oil pipes. The installation and debugging are complicated and the maintenance workload is large. Any type of pipeline may introduce a fault, causing damage to the cylinder block and preventing it from working properly.

[0009] 2) Scale buildup in water-cooled pipes during long-term operation reduces cooling efficiency over time, while introducing a pure water system increases investment costs.

[0010] 3) The air-cooled piping is an open-circuit system, which generates a lot of noise, creating a poor maintenance environment and masking the operating sounds of the equipment, making it difficult to detect and diagnose faults. In addition, because the gas has a low specific heat, when it is transported over long distances to the continuous casting vibration device, its temperature is already high due to friction with the heat source and the pipeline, which is not conducive to heat exchange with the equipment.

[0011] The above problems lead to a decrease in the reliability and stability of the electric cylinder, which in turn affects the production organization of the steel plant. Summary of the Invention

[0012] The technical problem to be solved by the present invention is to provide a comprehensive liquid cooling and lubrication system for a crystallizer vibrating electric cylinder, which has a low failure rate, low maintenance difficulty and cost, good lubrication and cooling effect, environmental friendliness and low noise, and can ensure the long-term stable operation of the crystallizer vibrating electric cylinder.

[0013] The technical solution adopted by the present invention to solve its technical problem is: to construct a comprehensive liquid cooling and lubrication system for a crystallizer vibration electric cylinder, including a thin oil station, a main oil supply pipeline, a main return oil pipeline and a return oil branch pipeline; the electric cylinder body is equipped with a servo motor cooling circuit and a cooling and lubrication circuit;

[0014] The thin oil station is equipped with a main oil supply port and a main oil return port. The station includes an oil tank, thermometer, level gauge, main oil supply pump, in-station circulating filter cooling pump, low-pressure filter, high-efficiency heat exchanger, and control box. The thermometer is installed on the oil tank to monitor the real-time temperature of the cooling and lubricating medium inside. When the temperature exceeds the set value, it sends a start signal to the in-station circulating filter cooling pump; when the real-time temperature of the cooling and lubricating medium in the oil tank is below the set value, the circulating filter cooling pump does not start. The level gauge is installed on the side of the oil tank to monitor the volume of the cooling and lubricating medium inside. When the level is below the set value, it issues a low level alarm. The motor of the main oil supply pump is installed on top of the oil tank, and the suction port of the main oil supply pump extends into the oil tank. The in-station circulating filter cooling pump is used to pass the cooling and lubricating medium in the oil tank through the high-efficiency heat exchanger to lower the temperature of the cooling and lubricating medium below the set value. The high-efficiency heat exchanger is installed on the side of the oil tank, and the low-pressure filter is installed at the oil outlet end after the main oil supply pump.

[0015] The main oil supply pipeline includes a front main oil supply pipe and a rear main oil supply pipe. The front main oil supply pipe is a low-level pipeline, and the rear main oil supply pipe is a high-level pipeline. The diameter of the rear main oil supply pipe is larger than that of the front main oil supply pipe. The front main oil supply pipe is connected to the oil outlet of the thin oil station, and the rear main oil supply pipe is connected to the front main oil supply pipe. One end of the first oil supply branch pipe and the second oil supply branch pipe are connected to the front main oil supply pipe and the rear main oil supply pipe respectively in parallel. The other end of the first oil supply branch pipe is connected to the servo motor cooling circuit at the bottom of the electric cylinder body for cooling the servo motor. The other end of the second oil supply branch pipe is connected to the cooling and lubrication circuit at the top of the electric cylinder body for cooling and lubricating the lead screw pair, bearings and cylinder body. The oil from the first oil supply branch pipe and the second oil supply branch pipe are all collected into the main return oil pipeline through the return oil branch pipe.

[0016] According to the above scheme, the thin oil flow path inside the electric cylinder body is as follows:

[0017] Thin oil flows in from the center of the top of the piston rod of the electric cylinder. The flowing lubricating oil sprays vertically downwards and splits into an umbrella shape after encountering the top end cap of the ball screw, continuing to flow downwards. The oil flow passes through the inside of the ball screw pair, lubricating the ball screw while carrying away the grinding. The thin oil continues to flow downwards to the position of the slewing bearing assembly, where it lubricates the bearing and carries away the grinding. Finally, the thin oil reaches the oil drain port and returns to the oil tank through the filter along the main return oil pipeline.

[0018] According to the above scheme, there is a height difference between the thin oil station and the electric cylinder body, which facilitates smooth oil return.

[0019] According to the above scheme, the oil supply temperature of the thin oil station is 36-42℃ and the pressure is 0.3-0.5MPa.

[0020] According to the above scheme, the high-efficiency heat exchanger is either a shell-and-tube type or a plate type.

[0021] According to the above scheme, the oil outlet of the low-pressure filter is equipped with a manual low-pressure ball valve.

[0022] According to the above scheme, an oil flow indicator is installed on the return branch pipe.

[0023] According to the above scheme, the main return oil pipeline is installed at an angle of 5-8° along the return oil direction.

[0024] According to the above scheme, an air filter is installed at the high end of the main return oil pipeline.

[0025] The integrated liquid cooling and lubrication system for a crystallizer vibrating electric cylinder of the present invention has the following beneficial effects:

[0026] 1. The liquid cooling and lubrication system of this invention eliminates the need for both water cooling and air cooling pipelines, reducing the probability of failure and maintenance difficulty. In particular, water cooling systems in steel plants rely on external pump rooms and pipelines for stable operation, while air cooling relies on external air compressor stations. This integrated liquid cooling and lubrication system is part of the continuous casting internal system, requiring only electricity and cooling water to operate stably. Even after the cooling water supply stops, the oil in the tank can continue to support the casting machine for 30 minutes, allowing it to stop production normally. In contrast, direct water cooling and air cooling systems, upon failure, can cause the electric cylinders to quickly enter an abnormal state, leading to production accidents. Increasing the time available for handling abnormal conditions without affecting production is of practical significance in steel plant production.

[0027] 2. Liquids have better thermal conductivity and faster heat exchange than air, resulting in higher cooling efficiency and no operating noise, making it easier to detect abnormal conditions of the casting machine during inspections.

[0028] 3. The cooling and lubricating medium oil source of this invention maintains its clean and low-temperature characteristics through continuous circulation, filtration and cooling. Compared with water cooling, it does not have the problem of scaling and can operate stably for a long time.

[0029] 4. The cooling and lubricating medium, thin oil, of this invention is recycled. As long as the cooling and lubricating medium, thin oil, does not deteriorate, it can be used for a long time, up to one year or even longer. In contrast, direct water cooling and air cooling are continuously consumed and emitted, thus resulting in low operating costs. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the structure of a vibratory electric cylinder in the prior art;

[0032] Figure 2 This is a flowchart of the integrated liquid cooling and lubrication system for the vibrating electric cylinder of the crystallizer according to the present invention;

[0033] Figure 3 This is a schematic diagram of the integrated liquid cooling and lubrication system for the vibrating electric cylinder of the crystallizer according to the present invention;

[0034] Figure 4 This is a structural diagram of a thin oil station. Detailed Implementation

[0035] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] like Figure 2-4As shown in the figure, the integrated liquid cooling and lubrication system for the crystallizer vibration electric cylinder of the present invention includes an oil thinning station 1, a main oil supply pipeline, an oil supply branch pipeline, a main oil return pipeline 3, an oil return branch 6, and a lubrication and cooling circulation pipeline channel designed on the electric cylinder body 9. The integrated liquid cooling and lubrication system for the crystallizer vibration electric cylinder of the present invention can be applied to continuous casting machines with different numbers of strands. Different numbers of strands of the casting machine require different capacities of the oil thinning station. The total flow rate Q provided by the oil thinning station can be determined according to the number of required flow rates Q1 and Q2 of each branch pipeline, that is, Q = (Q1 + Q2) * n, where Q1 and Q2 are calculated based on the cooling and lubrication requirements of the electric cylinder body. The diameter d1 of the main oil supply pipeline and the diameter d2 of the main oil return pipeline are determined according to the number of strands n of the casting machine and the oil supply branch pipelines Q1 and Q2. Since the oil in the oil return pipe is not under pressure, in order to make the oil return smoother, the diameters of the main oil return pipe and the branch oil return pipe are usually designed to be about 1.5 - 2 times larger than the inlet pipe. And it is required that the main oil return pipeline is installed with a downward slope of 5 - 8 degrees along the oil return direction, and a breather valve is provided at the end of the main oil return pipeline. In order to achieve the integrated liquid cooling and lubrication effect on the electric cylinder described in the present invention, there are requirements for the oil temperature and pressure provided by the oil thinning station. Usually, the oil supply temperature is required not to be higher than 38°C (depending on the specific working conditions, it may also be 36 - 42°C, the same below), and the pressure is within the range of 0.3 - 0.5 MPa. The high-efficiency heat exchanger supporting the oil thinning station must be able to cool the oil temperature in the station below 38°C. The specification model and form of the heat exchanger 1.8 depend on the required cooling capacity, and it can be a shell-and-tube type or a plate type, etc., and the cooling medium is water.

[0037] The lubrication and cooling circulation pipeline channel on the electric cylinder body 9 is as follows: The thin oil flows in from the center of the top of the electric cylinder piston rod. The lubricating oil flowing in sprays vertically downward and separates in an umbrella shape after hitting the top end cover of the ball screw, and then continues to flow downward. The oil flow passes through the inside of the roller screw pair, lubricating the roller screw and taking away the grinding at the same time. The oil flow continues to flow downward and reaches the position of the rotary bearing assembly. Similarly, it lubricates the bearing and takes away the grinding. The size of the mating ring gap between the bottom cover plate of the bearing and the screw spindle determines the oil flow speed and flow rate. It should neither be too small nor too large. If the ring gap is too small, the oil flow speed is slow and the flow rate is small, which cannot play the role of taking away the grinding and frictional heat; if it is too large, the flow rate of the oil source needs to be increased, increasing the investment cost. Therefore, it is reasonable and sufficient. Finally, the oil flow reaches the position of the oil drain port and returns to the oil tank along the oil return pipeline after passing through the filter.

[0038] For a more thorough understanding of the present invention, now refer to Figures 2-4The present invention will be described in detail with reference to the illustrated embodiment. This embodiment is a 5-strand billet continuous casting machine, consisting of 5 electric cylinder bodies 9 mounted on the vibrating table of the continuous casting machine. Each electric cylinder body 9 serves as the cooling and lubrication unit, internally designed with cooling and lubrication circuits including cooling and lubrication oil inlets and return ports. A thin oil station 1 is installed on one side of the second or first-level platform of the continuous casting machine, ensuring a certain height difference between the thin oil station 1 and the electric cylinder bodies 9 to facilitate smooth oil return. The thin oil station 1 includes a main oil supply port and a return port. It mainly consists of an oil tank 1.1, a thermometer 1.2, a level gauge 1.3, a main oil supply pump 1.4, a secondary oil supply pump 1.5, an in-station circulating filter cooling pump 1.6, a low-pressure filter 1.7, a high-efficiency heat exchanger 1.8, and a local control box 1.9. It also features system pressure display, pressure regulation, level and temperature monitoring and alarm functions, and achieves local and remote operation functions through communication with the casting machine PLC and integration with an HMI. The thin oil station's oil tank 1.1 is a steel structure, welded from carbon steel or stainless steel plates. It serves as a storage container for the cooling and lubricating fluid, and its inner surface must undergo anti-corrosion treatment and pressure penetration testing. Simultaneously, oil tank 1.1 is also the main load-bearing structure for the installation of other functional components in the thin oil station; therefore, it must possess sufficient structural strength and rigidity. A thermometer 1.2 is installed on oil tank 1.1, primarily used to monitor the real-time temperature of the cooling and lubricating medium within it. When the temperature exceeds a set value, it sends a start signal to the station's circulating filter cooling pump 1.6; when the real-time temperature of the cooling and lubricating medium in oil tank 1.1 is below the set value, the circulating filter cooling pump 1.6 does not start. A level gauge 1.3 is installed on the side of oil tank 1.1 to monitor the capacity of the cooling and lubricating medium within it. When the level falls below a set value, it issues a low-level alarm, reminding the user to replenish the cooling and lubricating medium in oil tank 1.1. The motors of the main oil supply pump 1.4 and the auxiliary oil supply pump 1.5 are mounted on top of the oil tank 1.1. The pump suction ports extend to a certain depth into the cooling and lubricating medium in the oil tank 1.1 to ensure that a certain pressure and flow rate of cooling and lubricating medium is supplied to the main oil supply pipe. The main oil supply pump 1.4 and the auxiliary oil supply pump 1.5 operate on a one-to-one standby basis; if one fails, the system can issue an alarm and automatically switch to start the other standby pump. The station-wide circulating filter cooling pump 1.6 is installed in the same manner as the main oil supply pump 1.4 and the auxiliary oil supply pump 1.5. The station-wide circulating filter cooling pump 1.6 is used to pass the cooling and lubricating medium in the oil tank 1.1 through the high-efficiency heat exchanger 1.8, reducing the temperature of the cooling and lubricating medium to within the set value. The high-efficiency heat exchanger 1.8 is installed on the side of the oil tank 1.1. The specifications and model of the high-efficiency heat exchanger 1.8 depend on the required cooling capacity, and its form can be various, such as shell-and-tube or plate type. The low-pressure filter 1.7 is installed at the outlet end of the oil supply pipe after the main oil supply pump 1.4 and the auxiliary oil supply pump 1.5 to ensure that clean cooling and lubricating medium is provided to the main oil supply pipe. The outlet is equipped with a manual low-pressure ball valve.

[0039] The main oil supply pipe is divided into a front main oil supply pipe 2 and a rear main oil supply pipe 7. The front main oil supply pipe 2 is a low-level pipe, and the rear main oil supply pipe 7 is a high-level pipe. The diameter of the rear main oil supply pipe 7 is much larger than that of the front main oil supply pipe 2, and its diameter can be the same as that of the main return oil pipe 3. The front main oil supply pipe 2 is connected to the outlet of the thin oil station 1, and the rear main oil supply pipe 7 is connected to the front main oil supply pipe 2 through a reducing diameter. The main oil supply pipe is installed in a C-shape along the platform and leads to the cooling and lubrication main body of the electric cylinder 9. One end of the first oil supply branch pipe 4 and the second oil supply branch pipe 5 are connected to the front main oil supply pipe 2 and the rear main oil supply pipe 7 respectively in parallel. Each oil supply branch pipe is equipped with a valve to regulate the flow rate of the branch pipe. The other end of the oil supply branch pipe 4 is connected to the cooling circuit of the servo motor at the bottom of the electric cylinder body 9, mainly to cool the servo motor. The other end of the second oil supply branch line 5 is connected to the upper cooling and lubrication circuit of the electric cylinder body 9, mainly serving to cool and lubricate the lead screw pair, bearings, and cylinder body. Finally, the oil from the first oil supply branch line 4 and the second oil supply branch line 5 converges into the main return oil line 3 through the return oil branch line 6 (or the oil from the first oil supply branch line 4 and branch line 5 returns to the main return oil line 3 separately). The return oil branch line 6 is equipped with an oil flow indicator for observing the return oil status. The main return oil line 3 is installed at an angle along the return oil direction, and its higher end is equipped with an air filter 8 for ventilation to ensure smooth oil return. The layout and routing of all pipelines in the entire liquid cooling and lubrication system are clear and well-defined, organically combined, thus achieving a system that meets both the cooling and lubrication requirements of the electric cylinder.

[0040] This invention achieves integrated cooling and lubrication functions using full liquid cooling technology, namely:

[0041] 1) The electric cylinder's internal components, such as the lead screw and bearings, are cooled by a continuous supply of cooled thin oil, which also cools the cylinder body and the motor. In this embodiment, the thin oil is a closed-type gear oil, L-CKC-150. The main function of the motor compartment is protection and heat insulation; the thin oil directly enters the cooling jacket of the motor housing for efficient cooling.

[0042] 2) The electric cylinder relies on a continuous supply of cooled thin oil to lubricate the internal components such as the lead screw and bearings.

[0043] 3) A thin oil circulation system is set up. The thin oil station is connected to the auxiliary system pipeline of the electric cylinder body through oil outlet and return pipelines. The thin oil station uses an oil pump to continuously supply oil to the oil inlet pipe of the cylinder body. Used thin oil is returned to the thin oil station through the return pipeline. Valves are installed on the oil outlet and return pipelines to the auxiliary system of each electric cylinder to control the appropriate flow rate.

[0044] 4) The thin oil station is equipped with one operating and one standby oil pump, an oil tank, an internal circulation pump, a filter, a high-efficiency heat exchanger, an oil level gauge, a thermometer, and a pressure gauge. The oil pump delivers cooled and filtered thin oil to the oil outlet pump of the thin oil circulation system. The internal circulation pump continuously pumps oil from the tank into the filter and heat exchanger for cleaning and cooling. The oil level gauge, thermometer, and pressure gauge are connected to the PLC of the continuous casting machine, enabling automatic functions such as oil leakage prediction, high temperature alarm, and pipeline blockage alarm. The oil level gauge in the tank uses digital or analog signal output, taking at least three sets of signals (high liquid level, low liquid level, and extremely low liquid level) to participate in PLC control. When a high-level alarm is detected during normal production, it indicates potential water ingress into the oil tank, requiring inspection and confirmation. A low-level alarm indicates the need for refueling and requires checking for leaks (generally, oil loss is minimal, and the level won't change significantly). If a sudden extremely low-level alarm occurs, the thin oil station will stop operating. To protect the equipment, the electric cylinder will also stop working. Leaks must be checked and addressed, and refueling must be completed to the normal level before restarting the thin oil station and electric cylinder. A thermometer is used to monitor the oil temperature in the thin oil station in real time. When the oil temperature exceeds the set value, the circulating cooling pump is activated to cool the oil back to the normal range through heat exchange. Pipeline blockage alarms are implemented by monitoring changes in pipeline pressure. When the oil pressure in the pipeline suddenly rises above the set value, an alarm signal is issued, prompting an inspection of the pipeline flow.

[0045] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A combined liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder, characterized in that, The electric cylinder body (9) is internally provided with a servo motor cooling circuit and a cooling lubrication circuit; The thin oil station (1) is provided with a main oil supply port and a main oil return port, and comprises an oil tank (1.1), a thermometer (1.2), a liquid level gauge (1.3), a main oil supply pump (1.4), an in-station circulating filter cooling pump (1.6), a low-pressure filter (1.7), a high-efficiency heat exchanger (1.8) and an operation box (1.9). The thermometer (1.2) is installed on the oil tank (1.1) and used for monitoring the real-time temperature of the cooling lubricating medium in the oil tank (1.1). When the temperature is higher than a set value, a start signal of the in-station circulating filter cooling pump (1.6) is sent. When the real-time temperature of the cooling lubricating medium in the oil tank (1.1) is lower than the set value, the circulating filter cooling pump (1.6) is not started. The liquid level gauge (1.3) is installed on the side of the oil tank (1.1) and used for monitoring the capacity of the cooling lubricating medium in the oil tank (1.1). When the liquid level is lower than a set value, a low-liquid-level alarm is sent. The motor of the main oil supply pump (1.4) is installed on the top of the oil tank (1.1), and the oil suction port of the main oil supply pump extends into the oil tank (1.1). The in-station circulating filter cooling pump (1.6) is used for cooling the cooling lubricating medium in the oil tank (1.1) through the high-efficiency heat exchanger (1.8), so that the temperature of the cooling lubricating medium is reduced to within the set value. The high-efficiency heat exchanger (1.8) is installed on the side of the oil tank (1.1), and the low-pressure filter (1.7) is installed at the oil outlet port end of the main oil supply pump (1.4). The oil supply main pipeline comprises a front main oil supply pipeline (2) and a rear main oil supply pipeline (7). The front main oil supply pipeline (2) is a low-position pipeline, and the rear main oil supply pipeline (7) is a high-position pipeline. The diameter of the rear main oil supply pipeline (7) is larger than that of the front main oil supply pipeline (2). The front main oil supply pipeline (2) is connected with the oil outlet of the thin oil station (1), the rear main oil supply pipeline (7) is connected with the front main oil supply pipeline (2), one end of the first oil supply branch pipeline (4) and the second oil supply branch pipeline (5) is connected with the front main oil supply pipeline (2) and the rear main oil supply pipeline (7) respectively in a parallel manner, the other end of the first oil supply branch pipeline (4) is connected with the servo motor cooling circuit at the lower part of the electric cylinder body (9) and used for cooling the servo motor, and the other end of the second oil supply branch pipeline (5) is connected with the cooling lubrication circuit at the upper part of the electric cylinder body (9) and used for cooling and lubricating the screw pair, bearings and cylinder body. The oil in the first oil supply branch pipeline (4) and the second oil supply branch pipeline (5) is gathered to the main oil return pipeline (3) through the oil return branch pipeline (6).

2. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The thin oil flow path in the electric cylinder body (9) is as follows: The thin oil flows into the center of the top of the electric cylinder piston rod, the flowing lubricating oil is vertically downward and is sprayed to the top end cover of the ball screw, is separated in an umbrella shape and continues to flow downward, the oil flow passes through the inside of the ball screw pair, lubricates the ball screw and carries away the abrasion at the same time, the thin oil continues to flow downward, reaches the position of the rotary bearing assembly, lubricates the bearing and carries away the abrasion at the same time, and finally reaches the oil discharge port position, flows along the main oil return pipeline (3), passes through the filter and returns to the oil tank.

3. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The thin oil station (1) has a height difference with the electric cylinder body (9), facilitating smooth oil return.

4. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The oil supply temperature of the thin oil station (1) is 36-42℃, and the pressure is 0.3-0.5MPa.

5. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The high-efficiency heat exchanger (1.8) is a column tube type or a plate type.

6. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The low-pressure filter (1.7) is provided with a manual low-pressure ball valve at the oil outlet.

7. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, An oil flow indicator is arranged on the oil return branch pipe (6).

8. The integrated liquid cooling and lubrication system for a crystallizer vibrating electro-cylinder of claim 1, wherein, The main oil return pipeline (3) is installed in an inclined manner along the oil return direction, and the inclination angle is 5-8°.

9. The integrated liquid cooling and lubrication system for the mold vibration electric cylinder according to claim 1, wherein the high-positioned one end of the main oil return pipeline (3) is provided with an air filter (8).

Images