Lubricating oil fine filter

Abstract

The utility model relates to filter machine technical field, concretely relates to lubricating oil fine filter, including filter vat, oil pump and mounting bracket, the filter vat installs at the front of mounting bracket, the oil pump installs at the bottom of mounting bracket inner wall, the output of oil pump is connected with the connecting pipe, another end communication of connecting pipe has the three way valve. The utility model discloses through setting three way valve, check valve, trundle, support frame etc. parts, through the mutual cooperation between three way valve and oil pump, filter vat, oil outlet pipe, makes three way valve to be able to switch oil flow through handle position, carries out mode switching to filter passageway or oil pumping passageway, and then reaches the effect that the device can realize the effect that lubricating oil realizes filter purification or direct suction direct discharge pumping through one key switching oil circuit, solves the problem that traditional equipment function is single, needs multiple configurations, reduces equipment procurement cost and space occupation, simplifies maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a fine filter for lubricating oil. Background Technology

[0002] Lubricating oil fine filter is a high-precision purification device designed specifically for lubricating oil. Through physical filtration, adsorption and other technologies, it removes particulate contaminants such as metal shavings, dust, moisture, colloids and other impurities from the oil, improving the cleanliness and performance of the oil, extending the service life of the lubricating oil, and reducing equipment wear. It is suitable for deep purification of lubrication systems in industrial, power, metallurgical and other fields.

[0003] Utility model patent CN211618442U discloses an oil filter, including a shell, a base, and several filter elements. The shell is hollow, and the filter elements are located within the shell cavity. A lid is provided at the upper opening of the shell. Each filter element has a through-hole along its axial direction, and a support rod is inserted into the oil cavity. The diameter of the support rod is smaller than the inner diameter of the oil cavity, and its lower end is fixedly mounted to the base. A top plate is provided on the upper part, which abuts against the filter element. An oil delivery channel is provided in the base, connecting the oil cavity to the outside. An oil outlet is provided on the base. In this type of oil filter, the oil is filtered from the oil cavity inside the filter element to the outside, with the filtration area gradually increasing, resulting in better filtration. Multiple filter elements can work simultaneously, resulting in high filtration efficiency. When a single filter element is damaged, it can be replaced individually, saving maintenance costs. The oil inlet pressure is controlled by a pressure relay; if the pressure exceeds the control value, the oil pump stops working, ensuring the safe operation of the oil filter.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: existing filters have limited functionality. When a company needs to simultaneously perform oil filtration and pumping functions, traditional oil filters can only filter or pump oil, resulting in the need to purchase multiple units, high costs, double the space required, and complex maintenance. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a fine filter for lubricating oil, which can effectively solve the problem that the existing filter has a single function, which can only realize the function of oil filtration or pumping. When both functions are required at the same time, multiple machines need to be purchased, resulting in high equipment purchase costs, large space occupation and complicated maintenance procedures.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a fine lubricating oil filter, including a filter barrel, an oil pump, and a mounting frame. The filter barrel is mounted on the front of the mounting frame, and the oil pump is mounted on the bottom of the inner wall of the mounting frame. The output end of the oil pump is connected to a connecting pipe, and the other end of the connecting pipe is connected to a three-way switching valve. One end of the three-way switching valve is connected to a fixed pipe. The bottom of the filter barrel is connected to an oil inlet pipe in parallel. The other end of the fixed pipe is connected to one end of the bottom of the oil inlet pipe. One end of the oil inlet pipe is connected to an oil drain valve. The bottom of the filter barrel is connected to a one-way valve. The other end of the three-way switching valve is connected to an oil outlet pipe, and the other end of the one-way valve is connected to the oil outlet pipe. Casters are mounted on the bottom of the outer side of the mounting frame.

[0008] The above solution incorporates a high-precision filter element installed inside the filter tank as the core component for fine oil filtration. This filter element traps impurities such as metal shavings, dust, and colloids, improving oil cleanliness. An oil pump provides the power source, driving the oil to circulate within the system, meeting the power requirements for both filtration and oil extraction modes. A three-way switching valve acts as the oil circuit switching hub, changing the oil flow direction via the handle position. In the vertical position, the oil passes through the filtration path and is purified by the filter tank; in the horizontal position, it connects to the oil extraction path, allowing for direct suction and discharge, bypassing the filter tank. This enables one-button switching between filtration and oil extraction functions. A one-way valve is installed at the bottom of the filter tank to prevent oil backflow into the filter tank during pumping. An oil drain valve connects to the inlet pipe to discharge residual oil from the filter tank. Casters and a support frame work together to allow for flexible switching between portable movement and fixed operation, adapting to different scenarios. All components are integrated through pipes and mounting frames, forming a compact structure that solves the space and cost issues associated with multiple units required in traditional equipment.

[0009] Furthermore, a power switch is installed on the back of the mounting bracket, and the power switch is electrically connected to the oil pump via a wire. A power indicator light is electrically connected to the top of the power switch via a wire.

[0010] The above solution allows for the control of the oil pump's start and stop by installing a power switch on the back of the mounting bracket and electrically connecting it to the oil pump and power indicator light. The power indicator light can also display the equipment's power-on status, facilitating operation and monitoring.

[0011] Furthermore, a flexible tube is connected to one side of the connecting pipe, and a pump pressure gauge is connected to the other end of the flexible tube. The pump pressure gauge is installed on the back of the mounting bracket, and a pressure protection switch is installed on the back of the mounting bracket. The pressure protection switch is connected to one end of the flexible tube through a pipe.

[0012] The above solution connects components such as a hose, pump pressure gauge, and pressure protection switch to one side of the three-way switching valve. The pump pressure gauge can display the oil pump output pressure in real time, and the pressure protection switch automatically cuts off the power supply when the oil pressure is too low or too high, preventing the oil pump from running dry or being damaged by overpressure, thus ensuring equipment safety.

[0013] Furthermore, the suction end of the oil pump is connected to a Y-type filter, and the other end of the Y-type filter is connected to an oil inlet.

[0014] With the above solution, the Y-type filter is installed at the suction end of the oil pump to perform primary filtration of the oil entering the system, intercepting large particles of impurities such as metal shavings and silt, preventing clogging of the oil pump impeller or subsequent precision filter element, and extending the life of core components. The oil inlet serves as the oil input end, connecting to an external oil source to ensure a stable flow of oil into the filtration system.

[0015] Furthermore, the other end of the oil inlet pipe is connected to a flow regulating valve, one end of which is connected to the oil inlet.

[0016] With the above solution, when the flow regulating valve is opened, some oil will flow directly from the oil outlet back to the oil inlet, making an empty circulation, instead of flowing through the filter barrel, thereby regulating the pressure inside the filtration system.

[0017] Furthermore, the top of the filter barrel is connected to an exhaust valve, the oil pump is electrically connected to an operating light via a wire, and the pressure protection switch is electrically connected to the oil pump via a wire.

[0018] With the above solution, the exhaust valve is installed on the top of the filter barrel. It needs to be manually opened before starting the machine to expel the air in the barrel and avoid air retention affecting the oil flow and filtration efficiency. When the air is expelled and the oil flows out, the exhaust valve is closed to ensure that a normal working environment is formed in the filter barrel. The operation light is electrically connected to the oil pump and will light up when the oil pump is turned on.

[0019] Furthermore, a safety valve is connected to one end of the oil pump.

[0020] With the above solution, the safety valve is connected to the oil pump. When the output pressure of the oil pump exceeds the set value, the safety valve opens to release pressure, preventing system overpressure and ensuring safe operation of the equipment.

[0021] Furthermore, a handrail is installed on the top of the mounting frame, and a support frame is installed on the bottom of the mounting frame.

[0022] The above solution facilitates equipment movement by installing handrails on the top of the mounting frame and a support frame at the bottom to secure the equipment, meeting the needs of different operating scenarios and enhancing equipment stability and portability.

[0023] Beneficial effects

[0024] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0025] I. This utility model, by setting up components such as a three-way switching valve, a one-way valve, casters, and a support frame, and through the cooperation between the three-way switching valve, the oil pump, the filter tank, and the oil outlet pipe, enables the three-way switching valve to switch the oil flow direction by changing the handle position, thus switching between the filtration passage and the oil extraction passage. This allows the device to achieve the effect of filtering and purifying lubricating oil or direct suction and discharge by switching the oil circuit with one button, solving the problems of traditional equipment having single function and requiring multiple units, reducing equipment procurement costs and space occupation, and simplifying the maintenance process.

[0026] II. This utility model, by setting up components such as a safety valve, pressure protection switch, pump pressure gauge, and power switch, and through the mutual cooperation between the safety valve and connecting pipe, oil outlet pipe, pressure protection switch and hose, pump pressure gauge, and power switch, enables the safety valve to automatically release pressure upon pressure triggering, and the pressure protection switch to cut off the power supply by monitoring the oil pressure, providing dual protection against abnormal overpressure or underpressure in the system. Thus, this device achieves the effect of overload protection for the oil pump, filter element, and pipeline through multiple pressure monitoring mechanisms. Attached Figure Description

[0027] 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 based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the present invention;

[0029] Figure 2 This is a rear view schematic diagram of the present invention;

[0030] Figure 3 This is a partial schematic diagram of the present invention;

[0031] Figure 4 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0032] Figure 5 For the present utility model Figure 2 Enlarged diagram of point B in the middle.

[0033] Attached reference numerals: 1. Filter canister; 2. Oil pump; 3. Mounting bracket; 4. Connecting pipe; 5. Three-way switching valve; 6. Fixed pipe; 7. Oil inlet pipe; 8. Oil drain valve; 9. Check valve; 10. Oil outlet pipe; 11. Caster; 12. Power switch; 13. Power indicator light; 14. Hoses; 15. Pump pressure gauge; 16. Pressure protection switch; 17. Y-type filter; 18. Oil inlet; 19. Flow regulating valve; 20. Exhaust valve; 21. Running light; 23. Safety valve; 25. Handrail; 26. Support frame. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] See attached document Figure 1-5 The lubricating oil fine filter includes a filter barrel 1, an oil pump 2, and a mounting frame 3. The filter barrel 1 is mounted on the front of the mounting frame 3, and the oil pump 2 is mounted on the bottom of the inner wall of the mounting frame 3. The output end of the oil pump 2 is connected to a connecting pipe 4, and the other end of the connecting pipe 4 is connected to a three-way switching valve 5. One end of the three-way switching valve 5 is connected to a fixed pipe 6. The bottom of the filter barrel 1 is connected in parallel to an oil inlet pipe 7, and the other end of the fixed pipe 6 is connected to one end of the bottom of the oil inlet pipe 7. One end of the oil inlet pipe 7 is connected to a drain valve 8, which is used to discharge residual oil. The bottom of the oil filter tank 1 is connected to a one-way valve 9, and the other end of the three-way switching valve 5 is connected to an oil outlet pipe 10. The other end of the one-way valve 9 is connected to the oil outlet pipe 10. Casters 11 are installed on the bottom of the outer side of the mounting bracket 3. The filter tank 1 is made of 304 stainless steel and has a filter element inside. The oil pump 2 is model TOP-340HB-VB+2HP and is used to provide a flow rate of 80L / Min. The three-way switching valve 5 is connected to the outlet of the oil pump 2 and is used to switch between the filtration mode and the oil pumping mode. The oil pump 2 is existing technology.

[0037] A power switch 12 is installed on the back of the mounting bracket 3. The power switch 12 is electrically connected to the oil pump 2 via a wire. A power indicator light 13 is electrically connected to the top of the power switch 12 via a wire. A hose 14 passes through one side of the connecting pipe 4, and the other end of the hose 14 is connected to a pump pressure gauge 15, which is installed on the back of the mounting bracket 3. A pressure protection switch 16 is installed on the back of the mounting bracket 3. The pressure protection switch 16 is connected to one end of the hose 14 via a pipe. A Y-type filter 17 is connected to the suction end of the oil pump 2. The other end of the Y-type filter 17 is connected to an oil inlet 18. The other end of the oil inlet pipe 7 is connected to a flow regulating valve 19. One end of the flow regulating valve 19 is connected to the oil inlet 18. An exhaust valve 20 is connected to the top of the filter tank 1. An operating light 21 is electrically connected to the oil pump 2 via a wire. One end of the oil pump 2 is connected to a safety valve 23. A handrail 25 is installed on the top of the mounting bracket 3, and a support frame 26 is installed at the bottom of the mounting bracket 3. The pressure protection switch 16 is electrically connected to the oil pump 2 via a wire. A Y-type filter 17 is located at the front end of the oil inlet 18 to filter large particulate impurities. An exhaust valve 20 is used to discharge air from the filter canister 1. An operating light 21 and a power indicator light 13 are used to indicate the working status of the equipment. A pump pressure gauge 15 is used to display the pressure. The pressure relief point of the safety valve 23 is set to 60 psi. When the pressure exceeds this value, it automatically releases pressure. When the pressure exceeds 70 psi, the pressure protection switch 16 automatically cuts off the power. Casters 11 and the support frame 26 are used for moving and fixing the equipment. The power switch 12, the power indicator light 13, and the pressure protection switch 16 are all prior art.

[0038] Working principle: During filtration, first check that all parts of the equipment are securely connected. After connecting the power, the power indicator light 13 will illuminate. Move the handle of the three-way switching valve 5 to the vertical position for filtration. Turn on the power switch 12 to start the oil pump 2, and simultaneously press the pressure protection switch 16. After the oil pump 2 starts running, the oil is drawn in from the inlet 18. It first passes through the Y-type filter 17 to filter out large particles of impurities, preventing clogging of subsequent filter elements. After being pressurized by the oil pump 2, the oil enters the three-way switching valve 5 through the connecting pipe 4, and then flows into the fixed pipe 6 and the oil inlet pipe 7 at the bottom of the filter tank 1, entering the interior of the filter tank 1. When the flow regulating valve 19 is opened, some of the oil passes through the inlet... Oil pipe 7 enters the Y-type filter 17 and passes through the filter barrel 1 through an empty circulation to adjust the filtration speed. Then, the exhaust valve 20 at the top of the filter barrel 1 needs to be opened manually to release the air in the barrel until oil flows out. Then, the exhaust valve 20 is closed. The filter barrel 1 is now full of oil and can filter normally. Under the negative pressure of the oil pump 2, the high-precision filter element in the filter barrel 1 traps metal debris, dust, colloids and other impurities in the oil. The cleaned oil gathers at the bottom of the filter barrel 1 and flows into the oil pipe 10 through the one-way valve 9 at the bottom of the barrel to prevent the oil from flowing back and impacting the filter element. After filtration, the residual oil in the filter barrel 1 can be discharged by opening the drain valve 8.

[0039] During this process, there is a 7psi low-pressure protection. Whether filtering or pumping oil, the low-pressure protection button must be pressed first until the pressure gauge exceeds 7psi. Then, press the low-pressure protection button again to reset it. After that, the system is in automatic protection mode. At this time, the pressure protection is controlled by the pressure protection switch 16. The pump pressure gauge 15 displays the output pressure of the oil pump 2 in real time. When the pressure exceeds 60psi, the safety valve 23 automatically opens to release pressure. If the pressure continues to rise to 70psi, the pressure protection switch 16 cuts off the circuit and the oil pump 2 stops to protect the equipment. If the oil pressure is always below 7psi, the pressure protection switch 16 remains open to prevent the oil pump 2 from running dry and wearing out.

[0040] When pumping oil, turn the handle of the three-way switching valve 5 to the horizontal position. The oil flows from the oil inlet 18 through the Y-type filter 17, the oil pump 2, the connecting pipe 4, and the three-way switching valve 5 directly out of the oil outlet pipe 10, bypassing the filter tank 1 to achieve direct suction and discharge, meeting the needs of rapid oil transfer. Both modes are moved or fixed by the bottom casters 11 of the mounting bracket 3 and the support frame 26. The top handrail 25 facilitates transportation.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lubricating oil fine filter, comprising a filter barrel (1), an oil pump (2), and a mounting bracket (3), characterized in that: The filter barrel (1) is installed on the front of the mounting frame (3), the oil pump (2) is installed on the bottom of the inner wall of the mounting frame (3), the output end of the oil pump (2) is connected to the connecting pipe (4), the other end of the connecting pipe (4) is connected to the three-way switching valve (5), one end of the three-way switching valve (5) is connected to the fixed pipe (6), the bottom of the filter barrel (1) is connected to the oil inlet pipe (7), the other end of the fixed pipe (6) is connected to one end of the bottom of the oil inlet pipe (7), one end of the oil inlet pipe (7) is connected to the oil drain valve (8), the bottom of the filter barrel (1) is connected to the one-way valve (9), the other end of the three-way switching valve (5) is connected to the oil outlet pipe (10), the other end of the one-way valve (9) is connected to the oil outlet pipe (10), and casters (11) are installed on the bottom of the outer side of the mounting frame (3).

2. The lubricating oil fine filter according to claim 1, characterized in that, A power switch (12) is installed on the back of the mounting bracket (3). The power switch (12) is electrically connected to the oil pump (2) via a wire. A power indicator light (13) is electrically connected to the top of the power switch (12) via a wire.

3. The lubricating oil fine filter according to claim 1, characterized in that, One side of the connecting pipe (4) is connected to a hose (14), and the other end of the hose (14) is connected to a pump pressure gauge (15). The pump pressure gauge (15) is installed on the back of the mounting bracket (3). A pressure protection switch (16) is installed on the back of the mounting bracket (3). The pressure protection switch (16) is connected to one end of the hose (14) through a pipe.

4. The lubricating oil fine filter according to claim 1, characterized in that, The suction end of the oil pump (2) is connected to a Y-type filter (17), and the other end of the Y-type filter (17) is connected to an oil inlet (18).

5. The lubricating oil fine filter according to claim 1, characterized in that, The other end of the oil inlet pipe (7) is connected to a flow regulating valve (19), and one end of the flow regulating valve (19) is connected to the oil inlet (18).

6. The lubricating oil fine filter according to claim 3, characterized in that, The top of the filter barrel (1) is connected to an exhaust valve (20), the oil pump (2) is electrically connected to an operating light (21) via a wire, and the pressure protection switch (16) is electrically connected to the oil pump (2) via a wire.

7. The lubricating oil fine filter according to claim 1, characterized in that, One end of the oil pump (2) is connected to a safety valve (23).

8. The lubricating oil fine filter according to claim 1, characterized in that, The top of the mounting bracket (3) is equipped with a handrail (25), and the bottom of the mounting bracket (3) is equipped with a support frame (26).

Images