A screw press machine with thin oil lubrication station

Abstract

The utility model discloses a kind of thin oil lubrication stations for screw press, including lubrication station body, oil back filtration unit, oil cooling unit and oil delivery unit;Lubrication station body is used to install and fix other functional units;Oil back filtration unit includes first filter, oil return tank, sediment tank, oil tank, oil supply tank and filter screen, oil enters oil return tank after being filtered by first filter, and flow into sediment tank to deposit by pipeline at the bottom of oil return tank, when oil overflow, enter oil tank after being filtered by filter screen set at the top of sediment tank, oil in oil tank is pumped into oil supply tank after being cooled by oil cooling unit;The oil delivery unit includes first motor pump group and second motor pump group;The first motor pump group pumps the oil in oil tank into oil cooling unit, and flows into oil supply tank after being cooled;The second motor pump group includes a plurality of second pump groups, and the plurality of second pump groups respectively deliver the oil in oil supply tank to each lubrication point of screw press.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of lubrication equipment technology, and more specifically, relate to a thin oil lubrication station for a screw press. Background Technology

[0002] Thin oil lubrication is a commonly used lubrication method. Its main function is to force lubricating oil to the friction parts of a machine, forming an oil film to reduce friction and wear between parts. Simultaneously, it flushes the friction parts, removing heat generated by friction, ensuring normal machine operation and extending its service life. In a closed-loop centralized thin oil lubrication system, the thin oil injected into each lubrication point, after lubrication, must be circulated back to the storage tank, purified, and then drawn in by the lubrication pump and re-injected into the respective lubrication points through a distributor.

[0003] In the lubrication process of the screw press, the closed-loop centralized lubrication circulation system of thin oil has obvious adaptation defects. The specific problems are as follows: (1) The frictional heat and wear particles generated by the moving parts of the screw press during operation will be mixed into the lubricating oil, resulting in a sharp increase in the return oil temperature and a significant increase in the degree of contamination. If it is directly recycled, it will not meet the normal lubrication requirements; (2) During the long-term friction process of the moving parts, metal wear particles will be generated, and these particles will be directly mixed into the lubricating oil; In addition, the working environment of the screw press may contain dust and impurities. Some pollutants will enter the lubrication system through the equipment sealing gap or the oiling operation, resulting in a sharp increase in the impurity content in the return oil and a significant increase in the degree of contamination.

[0004] Therefore, there is an urgent need for a new type of thin oil lubrication station that combines cooling, purification, and multiple outlet functions to solve the existing technical bottlenecks. Summary of the Invention

[0005] To address the problems of high return oil temperature, high contamination, and inability to adapt to multiple lubrication points in existing screw press lubrication systems, this invention provides a thin oil lubrication station for screw presses to solve these problems.

[0006] To achieve the above objectives, this utility model provides a thin oil lubrication station for a screw press, comprising a lubrication station body; an oil return filter unit for progressively filtering contaminated oil, including an oil storage tank and an oil supply tank separated by a partition plate within the lubrication station body, a sedimentation tank located within the oil storage tank, a filter screen located at the top of the sedimentation tank, and a return oil tank located at one end of the top of the lubrication station body. The return oil tank is positioned directly above the sedimentation tank, with an oil delivery pipe at its bottom and a first filter at its top; the end of the oil delivery pipe passes through the filter screen and is located inside the sedimentation tank; the first filter... The filter has a cylindrical structure with an oil recovery port at the upper end and a mesh structure on the lower cylindrical wall, which is installed inside the return oil tank. An oil cooling unit is located at the rear of the lubrication station body, with its input end connected to the output end of the oil storage tank. An oil delivery unit is located at the top of the lubrication station body, including a first motor pump set and a second motor pump set. The input end of the first motor pump set is connected to the output end of the oil cooling unit, and its output end is connected to the input end of the oil supply tank. The input end of the second motor pump set is connected to the output end of the oil supply tank, delivering oil to each lubrication point of the electric screw press.

[0007] Furthermore, the second motor pump unit includes a second motor and multiple second pump units.

[0008] Furthermore, the second pump set is also equipped with an oil supply pressure gauge and an oil supply regulating valve at the input end.

[0009] Furthermore, the oil delivery unit also includes a first liquid level sensor and a second liquid level sensor; the first liquid level sensor is located in the oil storage tank, and the second liquid level sensor is located in the oil supply tank.

[0010] Furthermore, the oil storage tank output end is equipped with a second filter, and the oil supply tank output end is equipped with a third filter.

[0011] Furthermore, the mesh size of the first filter, the filter screen, the second filter, and the third filter increases sequentially.

[0012] Furthermore, the oil cooling unit includes a temperature sensor, a radiator, and a cooling fan; the temperature sensor is located inside the oil tank; the radiator is a sealed liquid pipeline made of a material with high thermal conductivity, its input end is connected to the output end of the oil tank, and its output end is connected to the input end of the first motor pump group; the cooling fan is located outside the radiator to dissipate heat from the radiator.

[0013] Furthermore, the lubrication station body is a cabinet structure, with a sealing cover fixedly connected to one end of its top by bolts, which is located above the sedimentation tank; the sealing cover has a placement groove in the center, the structure of which is adapted to the return oil tank, and a through hole is opened in the center of the bottom of the groove to allow the oil delivery pipe to pass through.

[0014] Furthermore, a maintenance window is also provided on the front side of the lubrication station body.

[0015] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: (1) The thin oil lubrication station of this utility model detects the oil temperature in the oil tank in real time through the oil cooling unit. When the temperature exceeds the set threshold, the cooling fan starts to accelerate heat dissipation and works with the radiator to cool the oil, which can reduce the oil temperature to the normal lubrication range, effectively prevent the oil from failing due to high temperature and ensure stable lubrication effect.

[0016] (2) The thin oil lubrication station of this utility model removes impurities through the multi-stage purification structure of the oil return filter unit, namely, the first filter initially blocks impurities, the sedimentation tank settles particles with larger density, the filter screen performs secondary filtration, and the second and third filters perform subsequent fine filtration. This can gradually remove wear debris, metal particles, dust and other impurities from the return oil of the screw press, provide clean oil for the lubrication points and prevent impurities from entering the friction parts with the circulating oil and causing secondary wear.

[0017] (3) The thin oil lubrication station of this utility model realizes multi-outlet oil supply through the second motor pump group (including multiple second pump groups) of the oil delivery unit, which can deliver the clean oil in the oil supply tank to each lubrication point of the screw press. At the same time, the oil supply pressure gauge at the input end of the second pump group monitors the output oil pressure in real time, and the oil supply regulating valve regulates the output oil pressure, which can accurately control the oil pressure and flow rate of each lubrication point, meet the adaptation requirements of different lubrication points, and solve the problem that a single-outlet lubrication station cannot cover multiple lubrication points.

[0018] (4) The thin oil lubrication station of this utility model monitors the oil level in the storage tank by the first liquid level sensor in the oil delivery unit and monitors the oil level in the supply tank by the second liquid level sensor. When the oil level in the storage tank exceeds the set first liquid level value or the oil level in the supply tank is lower than the set second liquid level value, the first motor will start in time and drive the first pump group to operate, so as to ensure the oil level in the supply tank is stable, avoid lubrication interruption due to abnormal oil level, and reduce equipment operation failure.

[0019] (5) The thin oil lubrication station of this utility model has a sealing cover on the main body of the lubrication station to prevent external dust and impurities from entering the lubrication system through the gaps in the equipment and contaminating the oil, thereby reducing the source of oil contamination. At the same time, the maintenance window facilitates the inspection and maintenance of the internal functional units of the lubrication station, and the sedimentation tank can be removed to clean the internal sediment impurities. The overall structural design can improve the reliability of the lubrication station operation and reduce the difficulty of later maintenance operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a thin oil lubrication station for a screw press in an embodiment of this utility model; Figure 2 This is a rear view structural diagram of the thin oil lubrication station in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the thin oil lubrication station in an embodiment of this utility model.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-Lubrication station body, including: 11-Sealing cover, 12-Installation slot, 14-Maintenance window; 2-Oil return filtration unit, including: 21-first filter, 22-return oil tank, 23-sedimentation tank, 24-oil storage tank, 25-oil supply tank, 26-filter screen; 3-Oil cooling unit, including: 31-Temperature sensor, 32-Radiator, 32-Cooling fan; 4- Oil delivery unit, including: 41- First motor pump group, 411- First motor, 412- First pump group, 413- First liquid level sensor, 414- Second liquid level sensor, 42- Second motor pump group, 421- Second motor, 422- Second pump group, 423- Oil supply pressure gauge, 424- Oil supply regulating valve; 5-Maintenance window. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1-3As shown, this utility model provides a thin oil lubrication station for a screw press, including a lubrication station body 1, an oil return filtration unit 2, an oil cooling unit 3, and an oil conveying unit 4. The lubrication station body 1 is a cabinet structure used to install and fix other functional units. The oil return filtration unit 2 includes a first filter 21, an oil return tank 22, a sedimentation tank 23, an oil storage tank 24, an oil supply tank 25, and a filter screen 26, all mounted on the lubrication station body 1. The returned contaminated lubricating oil is filtered by the first filter 21 and then enters the oil return tank 13. The oil then flows into the sedimentation tank 23 through a pipe at the bottom of the oil return tank 13. The oil undergoes sedimentation. When the oil overflows, it is filtered through a filter screen 26 at the top of the sedimentation tank 23 and then enters the oil storage tank 24. The oil in the oil storage tank 24 is then cooled by the oil cooling unit 3 and pumped into the oil supply tank 25. The oil delivery unit 4 includes a first motor pump set 41 and a second motor pump set 42. The first motor pump set 41 pumps the oil in the oil storage tank 24 into the oil cooling unit 3, where it is cooled and then flows into the oil supply tank 24. The second motor pump set 42 includes multiple second pump sets 422, which respectively deliver the oil in the oil supply tank 24 to each lubrication point of the screw press. This utility model's thin oil lubrication station has multi-stage filtration, cooling, and multi-point lubrication functions, which can solve problems such as high return oil temperature, high contamination, and the inability of a single-outlet lubrication station to meet the needs of multiple lubrication points in the screw press lubrication system.

[0024] like Figure 1 As shown in the embodiment of this utility model, the lubrication station body 1 is a cabinet structure. The interior of the cabinet is divided by a partition plate for storing oil storage tank 24 and oil supply tank 25 to store filtered and cooling oil at different stages. The top is used to install oil delivery unit 4, and the side is equipped with oil cooling unit 3. Further, a sealing cover 11 is fixedly connected to the top end of the lubrication station body 1 by bolts. It is located above the sedimentation tank 23 to prevent external dust particles from entering the lubrication station body 1 and contaminating the oil. At the same time, the bolts can be loosened to remove the sealing cover 11 and clean the sedimentation tank 23 inside the lubrication station body 1. Further, a placement groove 12 is provided at the center of the sealing cover 11. The structure of the placement groove 12 is adapted to the return oil tank 22. A through hole is opened at the center of the bottom of the groove. By embedding the bottom of the return oil tank 22 into the placement groove 12, the oil delivery pipe at the bottom of the return oil tank 22 passes through the through hole and the filter screen 26 in sequence, thereby discharging the pre-filtered oil into the sedimentation tank 23. The lubrication station body 1 is also provided with a maintenance window 14 on the front side, which can be opened to allow maintenance personnel to maintain the inside of the oil supply tank 25.

[0025] The oil return filter unit 2 removes impurities from the contaminated lubricating oil flowing back from the screw press by filtering the contaminated lubricating oil in stages, providing clean oil for subsequent cooling and oil supply processes, and preventing impurities from entering the lubrication points with the circulating oil and causing secondary wear. The oil return filter unit 2 includes a first filter 21, an oil return tank 22, a sedimentation tank 23, an oil storage tank 24, an oil supply tank 25, and a filter screen 26.

[0026] The first filter 21 is a cylindrical structure with an oil recovery port at the upper end to receive the lubricating oil returned after the screw press is lubricated. The lower end of the cylindrical wall is a mesh structure and is installed in the return oil tank 22. The mesh size is 50 mesh or more, which is used to initially block impurities such as wear debris in the lubricating oil.

[0027] The return oil tank 22 is located at one end of the top of the lubrication station body 1, directly above the sedimentation tank 23. It receives the pre-filtered oil and transports the pre-filtered oil to the sedimentation tank 23 through the oil delivery pipe at the bottom.

[0028] The settling tank 23 is located inside the lubrication station body 1, directly below the return oil tank 22. The settling tank 23 is an open tank with a filter screen 26 on top. The mesh size of the filter screen 26 is larger than that of the first filter 21. The initially filtered oil is transported to the settling tank 23 through an oil delivery pipe for settling, allowing denser wear debris, metal particles, and other impurities to settle at the bottom of the tank, preventing them from entering the subsequent oil storage tank and lubrication points. After the settling tank 23 is full, the initially filtered oil undergoes a second filtration through the filter screen 26. The second filtered oil overflows from the settling tank 23 and enters the oil storage tank 24. In this embodiment, the settling tank 23 is placed inside the oil storage tank 24. By removing the return oil tank 22 and the sealing cap 11, the settling tank 23 can be removed for cleaning the filter screen 26 and the sediment at the bottom of the tank.

[0029] The oil storage tank 24 and the oil supply tank 25 are respectively located inside the lubrication station body 1 and are separated by a partition plate, wherein the oil storage tank 24 is located at the bottom; further, the output end of the oil storage tank 24 is provided with a second filter, the mesh size of which is larger than that of the filter screen 26. After the second filter is filtered, the oil is cooled by the cooling unit and then transported to the oil supply tank 25; further, the output end of the oil supply tank 25 is provided with a third filter, the mesh size of which is larger than that of the second filter 21. After the cooling oil is filtered four times by the third filter, it is transported to each lubrication point of the electric screw press by the oil conveying unit 4.

[0030] The oil cooling unit 3 reduces the temperature of the purified lubricating oil to the normal lubrication range, preventing oil failure due to high temperature and ensuring stable lubrication performance. The oil cooling unit 3 is fixedly installed at the rear of the lubrication station body 1 and includes a temperature sensor 31, a radiator 32, and a cooling fan 33. The temperature sensor 31 is located inside the oil reservoir 24 and monitors the temperature of the second-filtered oil in real time. When the temperature of the second-filtered oil exceeds a set threshold, a heat dissipation command is issued. The radiator 32 is a sealed liquid pipeline made of a material with high thermal conductivity. Its input end is connected to the output end of the oil reservoir 24, and its output end is connected to the input end of the first motor pump group 41. The cooling fan 33 is located outside the radiator 32, receives the heat dissipation command, and operates at high speed to accelerate the airflow around the radiator 32, thereby reducing the temperature of the third-filtered oil input to the oil supply tank 25 to the normal lubrication range.

[0031] The oil delivery unit 4 is fixedly installed on the top of the lubrication station body 1 and is used to deliver oil to other functional units. It includes a first motor pump group 41 and a second motor pump group 42.

[0032] The first motor-pump assembly 41 is used to input the cooled three-filter oil into the oil supply tank 25. It includes a first motor 411 and a first pump assembly 412. The first motor 411 drives the rotor inside the first pump assembly 412 to rotate at high speed through a transmission component, performing oil extraction. The input end of the first pump assembly 412 is connected to the output end of the radiator 32, and the output end is connected to the input end of the oil supply tank 25, inputting the cooled three-filter oil into the oil supply tank 25. Further, the oil delivery unit 4 also includes a first liquid level sensor 413 and a second... The first level sensor 413 is located in the oil reservoir 24 to detect whether the oil level in the oil reservoir 24 is lower than the second level value; the second level sensor 414 is located in the oil supply tank 25 to detect whether the oil level in the oil supply tank 25 exceeds the second level value; when the first level sensor 413 detects that the oil level in the oil reservoir 24 exceeds the first level value, or the second level sensor 414 detects that the oil level in the oil reservoir 24 is lower than the second level value, the first motor 411 starts and outputs power to drive the first pump group 412 to input the three-filter oil into the oil supply tank 25.

[0033] The second motor-pump unit 42 includes a second motor 421 and multiple second pump units 422. The second motor 421 is connected to a synchronous transmission shaft via a coupling. The transmission shaft passes through the rotors of multiple independent second pump units 422, thereby transmitting power to the multiple second pump units 422 to drive them to perform conveying operations. The input end of the second pump unit 422 is connected to the output end of the oil supply tank 25 to output four-filtered oil to the corresponding lubrication points of the screw press. Furthermore, the input end of the second pump unit 422 is also equipped with an oil supply pressure gauge 423 and an oil supply regulating valve 424. The oil supply regulating valve 424 regulates the output oil pressure, and the oil supply pressure gauge 423 detects the output oil pressure value. The oil pressure is regulated by the oil supply regulating valve 424 of each second pump unit 422, and the pressure is monitored in real time by the oil supply pressure gauge 423 to ensure that the oil pressure at each lubrication point meets the standard and the flow rate is appropriate.

[0034] When the thin oil lubrication station of this utility model is in operation, the contaminated lubricating oil after the screw press lubrication first enters the first filter 21 for preliminary filtration, then flows into the return oil tank 22, and is then transported to the sedimentation tank 23 for sedimentation through the bottom pipeline of the return oil tank 22; when the oil overflows in the sedimentation tank 23, it undergoes secondary filtration through the filter screen 26 and then enters the oil storage tank 24. The temperature sensor 31 in the oil storage tank 24 monitors the oil temperature in real time. If it exceeds the set threshold, the cooling fan 33 of the oil cooling unit 3 starts high. During high-speed operation, the oil is cooled by the radiator 32 and then pumped into the oil supply tank 25 by the first motor pump set 41. During this period, the first liquid level sensor 413 monitors the oil level in the oil storage tank 24 and the second liquid level sensor 414 monitors the oil level in the oil supply tank 25. When the oil level in the oil storage tank 24 exceeds the first liquid level value or the oil level in the oil supply tank 25 is lower than the second liquid level value, the first motor 411 starts to drive the first pump set 412 to work. After subsequent filtration, the oil in the oil supply tank 25 is delivered to each lubrication point of the screw press by the second motor pump set 42.

[0035] This utility model's thin oil lubrication station uses an oil cooling unit to monitor the oil temperature in the oil tank in real time. When the temperature exceeds a set threshold, the cooling fan starts to accelerate heat dissipation, and together with the radiator, the oil temperature is cooled down to the normal lubrication range, effectively preventing the oil from failing due to high temperature and ensuring stable lubrication effect.

[0036] This utility model's thin oil lubrication station uses a multi-stage purification structure of the oil return filter unit to remove impurities. Specifically, the first filter initially blocks impurities, the sedimentation tank settles larger particles, the filter screen performs secondary filtration, and the second and third filters perform subsequent fine filtration. This gradually removes wear debris, metal particles, dust, and other impurities from the return oil of the screw press, providing clean oil to the lubrication points and preventing impurities from entering the friction parts with the circulating oil and causing secondary wear.

[0037] This utility model's thin oil lubrication station achieves multi-outlet oil supply through a second motor pump group (including multiple second pump groups) in the oil delivery unit. It can deliver clean oil from the oil supply tank to each lubrication point of the screw press. At the same time, the oil supply pressure gauge at the input end of the second pump group monitors the output oil pressure in real time, and the oil supply regulating valve adjusts the output oil pressure. This allows for precise control of the oil pressure and flow rate at each lubrication point, meeting the adaptation requirements of different lubrication points and solving the problem that a single-outlet lubrication station cannot cover multiple lubrication points.

[0038] The thin oil lubrication station of this utility model monitors the oil level in the oil storage tank by a first liquid level sensor in the oil delivery unit and monitors the oil level in the oil supply tank by a second liquid level sensor. When the oil level in the oil storage tank exceeds the set first liquid level value or the oil level in the oil supply tank is lower than the set second liquid level value, the first motor will start in time and drive the first pump group to operate, so as to ensure the stability of the oil level in the oil supply tank, avoid lubrication interruption due to abnormal oil level, and reduce equipment operation failure.

[0039] The thin oil lubrication station of this utility model has a sealed cover on the main body of the lubrication station to prevent external dust and impurities from entering the lubrication system through the gaps in the equipment and contaminating the oil, thus reducing the source of oil contamination. At the same time, the maintenance window facilitates the inspection and maintenance of the internal functional units of the lubrication station, and the sedimentation tank can be removed to clean the internal sediment impurities. The overall structural design can improve the operational reliability of the lubrication station and reduce the difficulty of later maintenance operations.

[0040] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw press machine with a thin oil lubrication station, characterized in that, include: Lubrication station body (1); The oil return filtration unit (2) for filtering contaminated oil in stages includes an oil storage tank (24) and an oil supply tank (25) formed by partitions within the lubrication station body (1), a sedimentation tank (23) located within the oil storage tank (24), a filter screen (26) located at the top of the sedimentation tank (23), and a return oil tank (22) located at one end of the top of the lubrication station body (1). The return oil tank (22) is located directly above the sedimentation tank (23), with an oil supply pipe at its bottom and a first filter (21) at its top. The end of the oil supply pipe passes through the filter screen (26) and is located inside the sedimentation tank (23). The first filter (21) has a cylindrical structure with an oil recovery port at its upper end and a mesh structure at its lower end, which is installed inside the return oil tank (22). The oil cooling unit (3) located on the rear side of the lubrication station body (1) has its input end connected to the output end of the oil storage tank (24); The oil delivery unit (4) located on top of the lubrication station body (1) includes a first motor pump group (41) and a second motor pump group (42); the input end of the first motor pump group (41) is connected to the output end of the oil cooling unit (3), and the output end is connected to the input end of the oil supply tank (25); the input end of the second motor pump group (42) is connected to the output end of the oil supply tank (25), and delivers oil to each lubrication point of the electric screw press.

2. A screw press machine with a thin oil lubrication station according to claim 1, characterized in that, The second motor pump unit (42) includes a second motor (421) and multiple second pump units (422).

3. A screw press with a thin oil lubrication station according to claim 2, characterized in that, The second pump unit (422) is also equipped with an oil supply pressure gauge (423) and an oil supply regulating valve (424) at its input end.

4. A screw press with a thin oil lubrication station according to any one of claims 1-3, characterized in that, The oil delivery unit (4) further includes a first liquid level sensor (413) and a second liquid level sensor (414); the first liquid level sensor (413) is located in the oil storage tank (24), and the second liquid level sensor (414) is located in the oil supply tank (25).

5. A station for the lubrication of a screw press according to any one of claims 1-3, characterized in that, The oil storage tank (24) is equipped with a second filter at its output end, and the oil supply tank (25) is equipped with a third filter at its output end.

6. A screw press with a thin oil lubrication station according to claim 5, characterized in that, The mesh size of the first filter (21), filter screen (26), second filter and third filter increases sequentially.

7. A screw press with a thin oil lubrication station according to any one of claims 1-3, characterized in that, The oil cooling unit (3) includes a temperature sensor (31), a radiator (32), and a cooling fan (33); the temperature sensor (31) is located inside the oil tank (24); the radiator (32) is a sealed liquid pipeline made of a material with high thermal conductivity, and its input end is connected to the output end of the oil tank (24), and its output end is connected to the input end of the first motor pump group (41); the cooling fan (33) is located outside the radiator (32) to dissipate heat from the radiator (32).

8. A thin oil lubrication station for a screw press according to any one of claims 1-3, characterized in that, The lubrication station body (1) is a cabinet structure, and a sealing cover (11) is fixedly connected to one end of its top by bolts. It is located above the sedimentation tank (23). The sealing cover (11) has a placement groove (12) at its center. The structure of the placement groove (12) is adapted to the return oil tank (22). A through hole is opened at the center of the bottom of the groove to allow the oil delivery pipe to pass through.

9. A screw press with a thin oil lubrication station according to any one of claims 1-3, characterized in that, The lubrication station body (1) is also provided with a maintenance window (14) on the front side.

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