A machining lubricating oil recovery and filtration system

Abstract

The present invention belongs to the technical field of lubricating oil filtration, specifically a machining lubricating oil recovery and filtration system. By hinging a first filter screen and a second filter screen and installing a spring between the first and second filter screens, the two filter screens are combined to form a movable filter screen, and the waste lubricating oil is filtered by means of multi-layer filtration, improving the disadvantages of the traditional filtration device that only uses a filter bag for static filtration, with a long filtration time and low filtration efficiency. The movable filter screen can utilize the gravitational potential energy of the falling waste lubricating oil itself to impact the filter screen to generate vibration, increasing the flow rate of the waste lubricating oil on the surface of the filter screen, thereby improving the filtration efficiency. Moreover, the setting of the multi-layer filter screen enables the waste lubricating oil to be filtered multiple times, and can filter the impurities of the waste lubricating oil more meticulously, effectively improving the impurity removal rate of the filtration device.

Description

Technical Field

[0001] The present invention belongs to the technical field of lubricating oil filtration, and specifically relates to a machining lubricating oil recovery and filtration system. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and machined parts. It mainly plays roles such as lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering. After being used for a long time, impurities will appear. For the reuse of resources, a lubricating oil filtration and recovery system is often used to recycle waste lubricating oil to save resources.

[0003] The existing lubricating oil filtration and recovery system pours lubricating oil into a bucket and directly filters it through a filter screen, thereby separating impurities in the waste lubricating oil. However, when the existing such filtration system filters, it simply uses a static filter bag for filtration. The waste lubricating oil with a certain viscosity has poor fluidity on the surface of the static filter bag, resulting in a slow filtration speed and low filtration efficiency of the waste lubricating oil.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a machining lubricating oil recovery and filtration system, which solves the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is as follows: A machining lubricating oil recovery and filtration system provided by the present invention, by hinging a first filter screen and a second filter screen and installing a spring between the first and second filter screens, combines the two filter screens into a movable filter screen, and adopts a multi-layer movable filtration method to filter waste lubricating oil, improving the problem that when the existing filtration system filters, it simply uses a static filter bag for filtration, and the waste lubricating oil with a certain viscosity has poor fluidity on the surface of the static filter bag, resulting in a slow filtration speed and low filtration efficiency of the waste lubricating oil.

[0006] A machining lubricating oil recovery and filtration system provided by the present invention includes a cylinder body and an oil inlet opened at the top end of the cylinder body, and further includes:

[0007] A first filter screen, a second filter screen, and a filter bag. The lower end of the first filter screen is hinged to the second filter screen, and a spring is fixedly connected between the first filter screen and the second filter screen;

[0008] An oil discharge assembly, which is located at the bottom end of the cylinder body and is used to discharge the lubricating oil filtered by the first filter screen, the second filter screen, and the filter bag.

[0009] Preferably, a support frame is provided inside both the first filter screen and the second filter screen, and the second filter screen is fixedly connected to the bottom surface of a groove provided on the side wall of the cylinder body through the support frame;

[0010] Preferably, a boss is provided at the center of the first filter screen and the second filter screen, and the first filter screen and the second filter screen are arranged in parallel.

[0011] Preferably, a filter bag is fixedly connected to the lower surface of the second filter screen, and the pore size of the filter bag is larger than that of the first filter screen and the second filter screen.

[0012] Preferably, the oil drainage assembly includes an oil outlet, an oil nozzle, and a movable plate. The movable plate is slidably connected to the outer surface of the oil outlet. An oil nozzle is fixedly connected to the middle of the movable plate, and the cross-section of the oil nozzle is a trapezoidal structure.

[0013] Preferably, a movable groove matching the movable plate is provided at the bottom of the cylinder body, and the movable plate is slidably connected to the oil outlet and the sliding groove in the movable groove.

[0014] Preferably, a cover body is provided at the upper end of the cylinder body, and the left side of the cover body is hinged to the upper end of the cylinder body.

[0015] Preferably, the length of the sliding plate is twice the diameter of the oil outlet, and the length of the movable groove is three times the diameter of the oil outlet. Preferably, the radius of the gas nozzle is larger near the cylinder body and is fixedly connected to a third filter screen, and the radius of the gas nozzle is smaller far from the cylinder body and is fixedly connected to a fourth filter screen.

[0016] Preferably, both the movable plate and the cover body are made of polycarbonate material.

[0017] The beneficial effects of the present invention are as follows:

[0018] A machining lubricating oil recovery and filtration system of the present invention, by hinging the first filter screen and the second filter screen, installing a spring between the first and second filter screens, combining the two filter screens into a movable filter screen, and adopting a multi-layer filtration method to filter waste lubricating oil, improves the disadvantages of only using a filter bag for static filtration in traditional filtration devices, with a long filtration time and low filtration efficiency. The movable filter screen can utilize the gravitational potential energy of the falling waste lubricating oil itself to impact the filter screen to generate vibration, increase the flow rate of the waste lubricating oil on the surface of the filter screen, thereby improving the filtration efficiency, and the setting of the multi-layer filter screen can allow the waste lubricating oil to be filtered multiple times, and can filter the impurities of the waste lubricating oil more carefully, effectively improving the impurity removal rate of the filtration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a cross-sectional view of the present invention;

[0021] Figure 2 is a cross-sectional view of the top view of the present invention;

[0022] In the figure: cylinder body 1, first filter screen 2, second filter screen 3, filter bag 4, support frame 5, boss 6, spring 7, oil outlet 8, oil nozzle 9, third filter screen 10, fourth filter screen 11, movable plate 12, end cover 13, movable groove 14, oil inlet 15. Detailed implementation

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0024] The embodiment of the present invention provides a machining lubricating oil recovery and filtration system, which improves the problems of slow filtration speed and low filtration efficiency of the existing machining lubricating oil recovery and filtration system that filters in a static filter bag by using the fluidity of waste lubricating oil itself.

[0025] The technical solution in the embodiment of the present invention to solve the above technical problems is generally as follows: the first filter screen 2 and the second filter screen 3 are hinged inside the cylinder body 1, and a spring 7 is installed between the first filter screen 2 and the second filter screen 3 to make the two filter screens into a movable filter screen. When using the filtration system, the gravitational potential energy of the waste lubricating oil itself during pouring impacts the filter screen, causing the filter screen to vibrate under the action of the spring 7, and then flowing into the bottom of the cylinder body 1 after being filtered again by the filter bag 4 to complete the filtration.

[0026] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners;

[0027] A machining lubricating oil recovery and filtration system provided by the present invention includes a cylinder body 1 and an oil inlet 15 opened at the top end of the cylinder body 1, and further includes:

[0028] The first filter screen 2, the second filter screen 3 and the filter bag 4, the lower end of the first filter screen 2 is hinged to the second filter screen 3, and a spring 7 is fixedly connected between the first filter screen 2 and the second filter screen 3;

[0029] An oil discharge assembly, which is located at the bottom end of the cylinder body 1 and is used to discharge the lubricating oil filtered by the first filter screen 2, the second filter screen 3 and the filter bag 4;

[0030] When the filtration system starts to be used, waste lubricating oil flows into the cylinder body 1 from the oil inlet 15 at the top of the cylinder body 1. The gravitational potential energy of the waste lubricating oil after flowing in impacts on the first filter screen 2, causing the first filter screen 2 to vibrate. When the first filter screen 2 vibrates, under the action of the spring 7 fixedly connected to the lower surface of the first filter screen 2, the amplitude of the first filter screen 2 can be increased to improve the fluidity of the waste lubricating oil. After the waste lubricating oil passes through the first filter screen 2, it reaches the second filter screen 3 hinged at the lower end of the first filter screen 2. While the second filter screen 3 further filters the waste lubricating oil, it can reduce the probability that waste lubricating oil directly enters the filter bag 4 through the gap generated between the first filter screen 2 and the cylinder body 1 due to vibration, resulting in blockage. The filtered waste lubricating oil finally flows out of the cylinder body 1 through the oil discharge assembly located at the bottom end of the cylinder body 1.

[0031] The existing lubricating oil filtration and recovery system pours lubricating oil into a cylinder and directly filters it through a filter screen to separate impurities in the waste lubricating oil. However, when filtering with the existing such filtration system, simply using a static filter bag for filtration, the waste lubricating oil with a certain viscosity has poor fluidity on the surface of the static filter bag, resulting in a slow filtration speed and low filtration efficiency of the waste lubricating oil.

[0032] In the present invention, the first filter screen 2 and the second filter screen 3 are hinged inside the cylinder body 1, and a spring 7 is installed between the first filter screen 2 and the second filter screen 3. The two filter screens are combined to form a movable filter screen, so that when the waste lubricating oil is poured, it impacts on the movable filter screen, thereby causing the filter screen to vibrate, and further enhancing the fluidity of the waste lubricating oil with a certain viscosity on the surface of the filter screen and improving the filtration efficiency of the filter screen.

[0033] As a specific embodiment of the present invention, support frames 5 are provided inside both the first filter screen 2 and the second filter screen 3, and the second filter screen 3 is fixedly connected to the bottom surface of the groove provided on the side wall of the cylinder body 1 through the support frame 5;

[0034] The filter screen surface is woven from fiber materials and is difficult to shape. Support frames 5 are provided in both the first filter screen 2 and the second filter screen 3 to support and fix the first filter screen 2 and the second filter screen 3, facilitating the unfolding and fixing connection of the second filter screen 3 to the bottom surface of the groove provided on the side wall of the cylinder body 1, completing the unfolding and fixing of the first filter screen 2 and the second filter screen 3, and further ensuring the filtration effect of the first filter screen 2 and the second filter screen 3.

[0035] As a specific embodiment of the present invention, bosses 6 are provided at the centers of the first filter screen 2 and the second filter screen 3, and the first filter screen 2 and the second filter screen 3 are distributed in parallel;

[0036] A boss 6 is arranged between the first filter screen 2 and the second filter screen 3. When the waste lubricating oil is on the surface of the first filter screen 2, the waste lubricating oil can flow downwards from the inclined surface of the boss 6 due to the action of its own gravity, increasing the fluidity of the waste lubricating oil on the surface of the filter screen. At the same time, the contact area between the waste lubricating oil and the first filter screen 2 is enlarged. The double-layer filter structure formed by the parallel-distributed first filter screen 2 and the second filter screen 3 can ensure that the waste lubricating oil can be fully filtered.

[0037] As a specific embodiment of the present invention, a filter bag 4 is fixedly connected to the lower surface of the second filter screen 3, and the pore size of the filter bag 4 is larger than that of the first filter screen 2 and the second filter screen 3;

[0038] The waste lubricating oil filtered by the first filter screen 2 and the second filter screen 3 flows into the filter bag 4 fixedly connected to the lower surface of the second filter screen 3. The pore size of the filter bag 4 is larger than that of the first filter screen 2 and the second filter screen 3. Further filtering of the impurities in the waste lubricating oil is carried out on the basis of the preliminary filtration of the first filter screen 2 and the second filter screen 3. When the first filter screen 2 vibrates to improve the filtration efficiency, the multi-layer filter device can better separate the solid impurities in the waste lubricating oil and improve the working effect of the overall filtration system.

[0039] As a specific embodiment of the present invention, the oil discharge assembly includes an oil outlet 8, an oil nozzle 9, and a movable plate 12. The movable plate 12 is connected to the outer surface of the oil outlet 8, and the oil nozzle 9 is fixedly connected to the middle of the movable plate 12;

[0040] When the waste lubricating oil flows to the bottom of the cylinder body 1 after being filtered by the filter bag 4, the waste lubricating oil reaches the movable plate 12 connected to the outer surface of the oil outlet 8 through the oil outlet 8 in the oil discharge assembly at the bottom end of the cylinder body 1, so that the filtered waste lubricating oil flows out of the cylinder body 1 from the oil nozzle 9 in the middle of the movable plate 12 and is collected, completing the preliminary filtration process of the entire waste lubricating oil.

[0041] As a specific embodiment of the present invention, the cross-section of the oil nozzle 9 is a trapezoidal structure; the radius of the oil nozzle 9 is larger on the side close to the cylinder body 1 and is fixedly connected to a third filter screen 10, and the radius of the oil nozzle 9 is smaller on the side far from the cylinder body 1 and is fixedly connected to a fourth filter screen 11;

[0042] The oil outlet nozzle 9 is configured with a trapezoidal cross-section, with the larger end on the side close to the movable plate 12. A third filter screen 10 is provided at the larger end of the oil outlet nozzle 9, and a fourth filter screen 11 is provided on the smaller end side. The pore count of the third filter screen 10 is the same as that of the first filter screen 2, and the pore count of the fourth filter screen 11 is the same as that of the filter bag 4. This prevents unfiltered waste lubricating oil from directly entering the bottom of the cylinder body 1 through the oil outlet nozzle 9 after the filter screen is damaged, thereby contaminating the already filtered waste lubricating oil collected outside the cylinder body 1, and better reducing the possibility of the filtered waste lubricating oil being contaminated.

[0043] As a specific embodiment of the present invention, an activity groove 14 is opened at the bottom of the cylinder body 1, and the movable plate 12 is slidably connected to the sliding groove 14 relative to the oil outlet 8 within the activity groove 14;

[0044] The movable plate 12 is slidably connected relative to the oil outlet 8 within the activity groove 14 opened at the bottom of the cylinder body 1. The movable plate 12 where the oil outlet nozzle 9 is located can move up and down in the activity groove 14 to control the height of the oil outlet nozzle 9. Since there are fewer impurities in the upper layer of the waste lubricating oil filtered within the cylinder body 1 and more impurities are deposited in the lower layer, the height of the oil outlet nozzle 9 can be adjusted. The height of the oil outlet nozzle 9 can be adjusted through the movable plate 12 to be above the filtered waste lubricating oil within the cylinder body 1, facilitating the waste lubricating oil with fewer impurities in the upper part of the cylinder body 1 to flow out from the oil outlet nozzle 9. At the same time, it can prevent the impurities precipitated due to insufficient filtration at the bottom from flowing out and blocking the oil outlet nozzle 9, thus ensuring the normal outflow of the filtered waste lubricating oil.

[0045] As a specific embodiment of the present invention, the length of the sliding plate 12 is twice the diameter of the oil outlet 8, and the length of the activity groove 14 is three times the diameter of the oil outlet 8;

[0046] The length of the sliding plate 12 is twice the diameter of the oil outlet 8, and the length of the activity groove 14 is three times the diameter of the oil outlet 8. The limitation on the lengths of the sliding plate 12 and the activity groove 14 ensures that the sliding plate 12 can always completely cover the oil outlet 8 when moving in the activity groove 14. Thus, when adjusting the height of the oil outlet nozzle 9 to select the oil outlet position, there will be no oil leakage phenomenon of the cylinder body 1 due to the movement of the movable plate 12.

[0047] As a specific embodiment of the present invention, a cover body 13 is provided at the upper end of the cylinder body 1, and the left side of the cover body 13 is hinged to the upper end of the cylinder body 1;

[0048] A cover body 13 is provided above the position of the support frame 5 in the first filter screen 2 at the upper end of the cylinder body 1. The left lower end of the cylinder body 1 and the cover body 13 are hinged together, facilitating the opening of the cylinder body 1 by rotating the cover body 13 from the upper end of the cylinder body 1 when the filter screen is blocked by impurities, thereby facilitating the cleaning or replacement of the filter screen.

[0049] As a specific embodiment of the present invention, the movable plate 12 and the cover body 13 are both made of polycarbonate material;

[0050] The movable plate 12 and the cover body 13 made of polycarbonate material have strong corrosion resistance. At the same time, polycarbonate material is also a kind of transparent plastic. The transparent cover body 13 is convenient for observing the state of the filter screen, facilitating the cleaning or replacement of the filter screen. The position of the waste lubricating oil inside the cylinder body 1 can be seen through the movable plate 12, which is convenient for adjusting the height of the oil outlet nozzle 9 to discharge oil.

[0051] Working principle: When the filtration system starts to be used, the waste lubricating oil flows into the cylinder body 1 from the oil inlet 15 at the top of the cylinder body 1. The flowing waste lubricating oil drops onto the first filter screen 2. The convex platform 6 provided on the first filter screen 2 appropriately increases the fluidity of the waste lubricating oil, and the waste lubricating oil itself's gravity is used to vibrate the first filter screen 2. When the first filter screen 2 vibrates, it drives the support frames 5 provided on the first filter screen 2 and the second filter screen 3 to vibrate. At this time, under the action of the spring 7 fixedly connected to the lower surface of the first filter screen 2, the amplitude of the first filter screen 2 can be increased to improve the fluidity of the waste lubricating oil. The waste lubricating oil reaches the second filter screen 3 hinged to the lower end of the first filter screen 2 after passing through the first filter screen 2. The second filter screen 3 further filters the waste lubricating oil. The waste lubricating oil filtered by the first filter screen 2 and the second filter screen 3 flows into the filter bag 4 fixedly connected to the lower surface of the second filter screen 3. The pore size of the filter bag 4 is larger than that of the first filter screen 2 and the second filter screen 3, and further filters the impurities in the waste lubricating oil. After the waste lubricating oil is filtered by the filter bag 4, it flows to the bottom of the cylinder body 1. The waste lubricating oil reaches the movable plate 12 slidably connected to the outer surface of the oil outlet 8 through the oil outlet 8 in the oil outlet assembly at the bottom end of the cylinder body 1, and flows out of the cylinder body 1 through the oil outlet nozzle 9 opened in the middle of the movable plate 12 and passes through the third filter screen 10 and the fourth filter screen 11 to complete the filtration.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A machining lubricating oil recovery and filtration system, comprising a cylinder body (1) and an oil inlet (15) opened at the top end of the cylinder body (1), characterized in that: It further includes: a first filter screen (2), a second filter screen (3) and a filter bag (4). The lower end of the first filter screen (2) is hinged to the second filter screen (3), and a spring (7) is fixedly connected between the first filter screen (2) and the second filter screen (3); an oil drainage assembly, which is located at the bottom end of the cylinder body (1) and is used to drain the lubricating oil filtered by the first filter screen (2), the second filter screen (3) and the filter bag (4); a support frame (5) is arranged inside the first filter screen (2) and the second filter screen (3), and the first filter screen (2) and the second filter screen (3) are fixedly connected to the cylinder body (1) through the support frame (5); a boss (6) is arranged at the center of the first filter screen (2) and the second filter screen (3), and the first filter screen (2) and the second filter screen (3) are distributed in parallel; the lower surface of the second filter screen (3) is fixedly connected with a filter bag (4), and the mesh number of the filter holes of the filter bag (4) is larger than that of the first filter screen (2) and the second filter screen (3); the oil drainage assembly includes an oil outlet (8), an oil nozzle (9) and a movable plate (12). The outer surface of the oil outlet (8) is slidably connected with the movable plate (12), and an oil nozzle (9) is fixedly connected to the middle of the movable plate (12). The cross section of the oil nozzle (9) is a trapezoidal structure; the radius of the oil nozzle (9) on the side close to the cylinder body (1) is larger and is fixedly connected with a third filter screen (10), and the radius of the oil nozzle (9) on the side far from the cylinder body (1) is smaller and is fixedly connected with a fourth filter screen (11); a movable groove (14) matching the movable plate (12) is formed in the bottom of the cylinder body (1), and the movable plate (12) is slidably connected to the oil outlet (8) and the movable groove (14) in the movable groove (14).

2. The machining lubricating oil recovery and filtration system according to claim 1, characterized in that: the length of the movable plate (12) is twice the diameter of the oil outlet (8), and the length of the movable groove (14) is three times the diameter of the oil outlet (8).

3. The machining lubricating oil recovery and filtration system according to claim 1, wherein: a end cover (13) is arranged at the upper end of the cylinder body (1), and the left side of the end cover (13) is hinged to the upper end of the cylinder body (1).

4. The machining lubricating oil recovery and filtration system according to claim 1, characterized in that: both the movable plate (12) and the end cover (13) are made of polycarbonate material.

Images