A box-type lubricating oil filter

Abstract

The present invention provides a box-type lubricating oil filter, comprising: a filtering mechanism. The filtering mechanism includes a filtering housing, a first filtering component, a second filtering component, and a spiral driving mechanism. The filtering housing has a first axis. The first filtering component and the second filtering component are both arranged inside the filtering housing, and the second filtering component is arranged inside the first filtering component; the first filtering component is fixedly connected to the filtering housing, the second filtering component can rotate around the first axis, and the spiral driving mechanism abuts against the second filtering component; the spiral driving mechanism rotates to squeeze the second filtering component to generate periodic deformation, and at the same time generates a backwashing effect on the lubricating oil. Thereby, not only the possibility of blockage is reduced, but also the filtering efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oil filtration, and particularly to a box-type lubricating oil filter. Background Art

[0002] During the operation of modern mechanical equipment, the cleanliness of lubricating oil is directly related to the performance and service life of the equipment. As a key component, the lubricating oil filter is responsible for removing impurities in the oil to ensure the efficient operation of the lubrication system. However, the existing lubricating oil filtering devices generally adopt the design of a fixed filter screen, and this design is prone to the problem of filter screen clogging during long-term use.

[0003] Over time, contaminants such as metal chips and rubber debris in the oil will gradually form a dense impurity layer on the surface of the filter screen. These impurity layers gradually fill the holes of the filter screen, resulting in a significant decrease in the flow rate of the filter. This not only affects the fluidity of the lubricating oil but also may cause overheating or damage to the device, and in severe cases, even lead to the shutdown of the device.

[0004] In addition, the filter screen cleaning process in the existing technology is usually relatively complex. When the filter screen becomes clogged, it is usually necessary to completely disassemble the filter for manual cleaning or replace the filter element, resulting in frequent maintenance requirements for users during use, reducing the economy and convenience of the equipment. This not only increases the maintenance cost but also prolongs the shutdown time of the equipment.

[0005] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] Based on this, it is necessary to provide a box-type lubricating oil filter for the problems of reduced filtration efficiency caused by filter screen clogging and difficult cleaning and maintenance existing in the current lubricating oil filtering devices.

[0007] The above object is achieved by the following technical solutions:

[0008] A box-type lubricating oil filter, comprising:

[0009] A filtering mechanism, the filtering mechanism includes a filtering housing having a first axis;

[0010] The filtering mechanism includes a first filtering component and a second filtering component. Both the first filtering component and the second filtering component are arranged inside the filtering housing; the second filtering component is arranged inside the first filtering component; the first filtering component is fixedly connected to the filtering housing, and the second filtering component can rotate around the first axis;

[0011] The filtering mechanism further includes a spiral driving mechanism, which abuts against the second filtering component, and the spiral driving mechanism can rotate around the first axis;

[0012] The spiral driving mechanism rotates to squeeze the second filtering component to generate periodic deformation, and at the same time generates a backwashing effect on the lubricating oil.

[0013] In one embodiment, the cross-section of the spiral driving mechanism perpendicular to the first axis is elliptical, and its outer edge periodically squeezes the second filtering component during rotation.

[0014] In one embodiment, the first filtering component includes a rigid wheel, and a plurality of grooves are provided on the rigid wheel; the second filtering component includes a flexible wheel, and a plurality of bumps are provided on the flexible wheel; the flexible wheel deforms under the drive of the spiral driving mechanism, and the number of grooves is more than the number of bumps, so that the bumps and the grooves cooperate to realize the reverse rotation of the flexible wheel.

[0015] In one embodiment, the first filtering component further includes a first filtering layer for performing coarse filtering; the second filtering component further includes a second filtering layer for performing fine filtering.

[0016] In one embodiment, the second filtering component includes a fixing frame, the second filtering layer is fixedly connected to the fixing frame, and the fixing frame is fixedly connected to the flexible wheel.

[0017] In one embodiment, a plurality of filtering holes are provided on the first filtering layer, a plurality of filtering holes are provided on the second filtering layer, and the filtering hole diameter of the first filtering layer is larger than the filtering hole diameter of the second filtering layer.

[0018] In one embodiment, the filtering mechanism further includes a driving shaft, a dynamic sealing ring and a static sealing ring. The dynamic sealing ring rotates with the driving shaft and contacts the static sealing ring to seal the connection between the static sealing ring and the filtering housing.

[0019] In one embodiment, the filtering mechanism further includes an elastic mechanism, which is fixedly connected to the dynamic sealing ring, and the elastic force of the elastic mechanism always makes the dynamic sealing ring tend to slide towards the static sealing ring.

[0020] In one embodiment, a feed pipe and a discharge pipe are further included. The feed pipe is arranged on one side of the filtering housing, and the discharge pipe is arranged at the bottom of the filtering housing.

[0021] In one embodiment, a plurality of the filtering mechanisms are provided, and the plurality of filtering mechanisms are connected through the feed pipe and the discharge pipe.

[0022] The beneficial effects of the present invention are as follows:

[0023] The present invention provides a box-type lubricating oil filter, including a filtering mechanism. The filtering mechanism includes a filtering housing, a first filtering component, a second filtering component, and a spiral driving mechanism. The filtering housing has a first axis. Both the first filtering component and the second filtering component are arranged inside the filtering housing, and the second filtering component is arranged inside the first filtering component; the first filtering component is fixedly connected to the filtering housing, the second filtering component can rotate around the first axis, and the spiral driving mechanism abuts against the second filtering component; the spiral driving mechanism rotates to squeeze the second filtering component to generate periodic deformation, and at the same time, a backwashing effect is produced on the lubricating oil. Thereby, not only the possibility of blockage is reduced, but also the filtering efficiency and quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the box-type lubricating oil filter provided by an embodiment of the present invention;

[0025] Figure 2 is Figure 1 the front view of the box-type lubricating oil filter in

[0026] Figure 3 is Figure 2 the sectional view of the box-type lubricating oil filter along the A-A section in

[0027] Figure 4 is Figure 2 the sectional view of the box-type lubricating oil filter along the B-B section in

[0028] Figure 5 is Figure 2 the sectional view of the box-type lubricating oil filter along the C-C section in

[0029] Figure 6 is Figure 3 the partially enlarged schematic view of the box-type lubricating oil filter at A in

[0030] Figure 7 is Figure 4 the partially enlarged schematic view of the box-type lubricating oil filter at B in

[0031] Figure 8 is Figure 5 the partially enlarged schematic view of the box-type lubricating oil filter at C in

[0032] Figure 9 is Figure 5Partial enlarged schematic diagram at position D of the middle box-type lubricating oil filter;

[0033] Wherein:

[0034] 100, device box; 101, first window; 102, second window; 103, control panel; 110, moving wheels; 120, feed pipe; 130, discharge pipe;

[0035] 200, filtering mechanism; 201, filtering housing; 202, filtering inner cavity; 210, spiral drive mechanism; 211, first filtering component; 212, second filtering component; 221, rigid wheel; 222, flexible wheel; 231, groove; 232, bump; 241, first filtering layer; 242, second filtering layer; 250, fixing frame; 252, dynamic sealing ring; 253, static sealing ring; 254, elastic mechanism; 260, power mechanism; 261, drive shaft. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0039] The following will refer to Figures 1 to 9 the box-type lubricating oil filter provided by the embodiments of the present invention for description.

[0040] As Figures 1 to 9 shown, the box-type lubricating oil filter provided by the embodiments of the present invention is particularly suitable for the lubricating oil filtration treatment in current mechanical equipment. Of course, it can also be applied to the lubricating oil filtration treatment under other operating conditions.

[0041] Specifically, as Figures 1 to 2 shown, the box-type lubricating oil filter includes a device box body 100. The device box body 100 serves as the installation foundation for other components. Other components can be directly or indirectly installed on the device box body 100 and form a relative whole after installation. A first window 101 and a second window 102 are provided on the device box body 100. The first window 101 is arranged at the side end of the device box body 100 for observing the situation inside the device box body 100 in real time; the second window 102 is arranged at the upper end of the device box body 100 and serves as a window for maintenance and repair for cleaning and replacing internal components. A control panel 103 is also provided on the device box body 100, serving as an operation interface for directly controlling the start and stop of the filtration operation. In addition, a plurality of moving wheels 110 are provided on the device box body 100 to facilitate the movement of the entire device box body 100.

[0042] The filtering mechanism 200 is arranged inside the device box body 100 and is mainly used for filtering the lubricating oil. As Figures 3 to 5 shown, the filtering mechanism 200 includes a filtering housing 201. The inside of the filtering housing 201 has a hollow chamber serving as a filtering inner chamber 202 for accommodating the lubricating oil. The outer shape of the filtering housing 201 is slightly cylindrical, and the central axis of the filtering housing 201 is the first axis. It can be understood that the filtering housing 201 can also be other regular shapes. At this time, the first axis can be obtained by artificial setting, but the first axis should be located at the middle position of the filtering housing 201.

[0043] As Figure 9As shown, the filtering mechanism 200 includes a first filtering component 211 and a second filtering component 212. Both the first filtering component 211 and the second filtering component 212 are arranged inside the filtering housing 201, and the second filtering component 212 is arranged inside the first filtering component 211. The lubricating oil first passes through the first filtering component 211 for preliminary filtering, and then passes through the second filtering component 212 for further filtering. Further, the second filtering component 212 can rotate around the first axis, while the first filtering component 211 is fixedly connected to the filtering housing 201. After starting to work, the second filtering component 212 rotates to generate relative rotation with the first filtering component 211. During this process, the lubricating oil after preliminary filtering has a relative displacement with the rotating second filtering component 212, thereby generating an impact force on the lubricating oil, causing the impurities in the lubricating oil to be impacted and changing the moving direction of the impurities. And the direction of this impact force is opposite to the flowing direction of the lubricating oil after preliminary filtering, causing the impurities to collide back and forth between the first filtering component 211 and the second filtering component 212 multiple times, and finally sliding down along the walls of the first filtering component 211 and the second filtering component 212 to the bottom. At the same time, the impact force received by the lubricating oil will also impact the impurities attached to the first filtering component 211 and the second filtering component 212, causing the impurities to be peeled off from their surfaces and also colliding between the first filtering component 211 and the second filtering component 212 multiple times, and finally sliding down along the walls of the first filtering component 211 and the second filtering component 212 to the bottom. Thus, effectively preventing the impurities from clogging the second filtering component 212, and at the same time significantly improving the overall filtering efficiency.

[0044] The filtering mechanism 200 further includes a spiral driving mechanism 210, as Figure 9 shown, the spiral driving mechanism 210 is not a complete circular shape, and thus there will be a direct contact part and a non-contact part with the second filtering component 212. Specifically, when the spiral driving mechanism 210 rotates clockwise, that is, Figure 9 the clockwise direction in, the direct contact part of it will generate a squeezing force on the second filtering component 212, which will cause the part of the second filtering component 212 in contact with the spiral driving mechanism 210 to deform towards the direction close to the first filtering component 211, and at the same time cause the second filtering component 212 to rotate counterclockwise. Since the spiral driving mechanism 210 rotates continuously, the contact part with the second filtering component 212 is also constantly changing, which makes the second filtering component 212 always in a periodic deformation state.

[0045] During the process of periodic deformation, the spiral drive mechanism 210 continuously applies a squeezing force to the second filter component 212, which causes the lubricating oil passing through the second filter component 212 to be pushed back, so that the lubricating oil entering the interior of the second filter component 212 enters again between the first filter component 211 and the second filter component 212 after passing through the second filter component 212 again, thereby forming an impact on the second filter component 212. Therefore, not only can the lubricating oil pass through the second filter component 212 again for secondary filtration, but also the impurities attached to the surface of the second filter component 212 can be detached, thereby effectively reducing the possibility of blockage.

[0046] In addition, during the process of periodic deformation, the second filter component 212 itself will generate vibrations. Such vibrations help to further loosen and remove the impurities attached to its surface, thereby significantly improving the filtration efficiency and at the same time increasing the service life and filtration efficiency of the second filter component 212.

[0047] In one embodiment, as Figure 9 shown, the cross-section of the spiral drive mechanism 210 perpendicular to the first axis is elliptical, and the outer edges of the two end points of its major axis are in continuous contact with the second filter component 212, applying a continuous squeezing effect on the second filter component 212 during rotation, and the outer edges of the two end points of its minor axis are not in contact with the second filter component 212.

[0048] In one embodiment, as Figures 3 to 9 shown, the first filter component 211 includes a rigid wheel 221, and a plurality of grooves 231 are provided on the rigid wheel 221. The second filter component 212 includes a flexible wheel 222, and a plurality of protrusions 232 are provided on the flexible wheel 222, and the number of grooves 231 is more than the number of protrusions 232.

[0049] Specifically, when the spiral drive mechanism 210 rotates clockwise, that is, Figure 9 the clockwise direction in Figure 5 and Figure 9 shown, it squeezes the flexible wheel 222 to undergo periodic deformation, and the protrusions 232 in contact with the major axis are pushed into the grooves 231 of the rigid wheel 221 to achieve a tight fit; the protrusions 232 not in contact with the major axis gradually disengage from the grooves 231 of the rigid wheel 221. Since the number of grooves 231 is more than the number of protrusions 232, the freedom of movement of the cooperation between the grooves 231 and the protrusions 232 is ensured, and jamming is avoided. Therefore, during the cooperation process of the grooves 231 and the protrusions 232 (for example, the working principle of the rigid wheel and the flexible wheel of a harmonic drive reducer), the flexible wheel 222 will vibrate, effectively removing the impurities attached to the flexible wheel 222.

[0050] During the periodic deformation of the flexible wheel 222, the advantage of the large number of grooves 231 enables the relative movement between the flexible wheel 222 and the rigid wheel 221, and the flexible wheel 222 can smoothly generate a counterclockwise self-rotation movement relative to the rigid wheel 221. Specifically, the flexible wheel 222 is equivalent to a backward displacement of the rigid wheel 221, that is, a counterclockwise backward rotation, while driving the convex block 232 to perform a periodic cyclic cooperation in the groove 231, so that the flexible wheel 222 and the rigid wheel 221 have a relative displacement, preventing impurities from clogging the second filter assembly 212 and reducing the possibility of clogging.

[0051] In one embodiment, as Figure 7 and Figure 8 shown, the first filter assembly 211 further includes a first filter layer 241, and the first filter layer 241 is fixedly arranged on the side of the rigid wheel 221 close to the inner wall of the filter inner cavity 202, that is, the outer side of the rigid wheel 221, for rough filtering of the lubricating oil and preventing large impurities from blocking the rotation of the first filter assembly 211. The second filter assembly 212 includes a second filter layer 242, and the second filter layer 242 is fixedly arranged on the side of the flexible wheel 222 close to the screw drive mechanism 210, that is, the inner side of the flexible wheel 222, and moves and deforms synchronously with the flexible wheel 222, for fine filtering of the lubricating oil to further ensure the reliability of the lubricating oil filtering quality.

[0052] Furthermore, as Figures 3 to 9 shown, the second filter assembly 212 includes a fixing frame 250, the second filter layer 242 is fixedly connected to the fixing frame 250, and the fixing frame 250 is fixedly connected to the flexible wheel 222.

[0053] In one embodiment, as Figures 3 to 9 shown, a plurality of filter holes are provided on both the first filter layer 241 and the second filter layer 242, and the filter pore diameter of the first filter layer 241 is larger than that of the second filter layer 242. Specifically, the filter pore diameter of the first filter layer 241 is larger, for intercepting large particle impurities in the lubricating oil to avoid their direct entry into the second filter layer 242 and preventing the filter holes of the first filter layer 241 from being quickly clogged. The filter pore diameter of the second filter layer 242 is smaller, responsible for removing the remaining fine particles to further ensure the reliability of the lubricating oil filtering quality.

[0054] In one embodiment, as Figure 6As shown, the filtering mechanism 200 further includes a drive shaft 261, and the drive shaft 261 is connected to the screw drive mechanism 210. In addition, the filtering mechanism 200 further includes a power mechanism 260, and the power mechanism 260 is connected to the drive shaft 261 for providing power to the screw drive mechanism 210. Further, the filtering mechanism 200 further includes a dynamic seal ring 252 and a static seal ring 253. The dynamic seal ring 252 is connected to the drive shaft 261, and the static seal ring 253 is fixedly connected to the filter housing 201.

[0055] Further, the filtering mechanism 200 further includes an elastic mechanism 254, which is fixedly connected to the dynamic seal ring 252. Specifically, the drive shaft 261 drives the dynamic seal ring 252 to rotate, and at the same time, the elastic mechanism 254 causes the dynamic seal ring 252 to slide downward to contact the static seal ring 253, that is Figure 6 the up and down direction in, so as to realize the sealing of the filter housing 201.

[0056] In one embodiment, as Figure 4 and Figure 5 shown, the box-type lubricating oil filter further includes a feed pipe 120 and a discharge pipe 130. The feed pipe 120 is arranged on one side of the filter housing 201 for conveying the lubricating oil to be filtered. The discharge pipe 130 is arranged at the bottom of the filter housing 201 for discharging the filtered lubricating oil.

[0057] Further, as Figures 1 to 9 shown, the box-type lubricating oil filter includes a plurality of filtering mechanisms 200, which are arranged inside the filter housing 201. The plurality of filtering mechanisms 200 are connected through the feed pipe 120 and the discharge pipe 130, so as to realize the filtering process of the plurality of filtering mechanisms 200, thereby improving the filtering efficiency.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0059] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A box-type lubricating oil filter, characterized in that Comprising: A filtering mechanism, the filtering mechanism including a filtering housing having a first axis; The filtering mechanism includes a first filtering component and a second filtering component, both the first filtering component and the second filtering component being disposed inside the filtering housing; the second filtering component is disposed inside the first filtering component; the first filtering component is fixedly connected to the filtering housing, and the second filtering component is capable of rotating around the first axis; The filtering mechanism further includes a spiral driving mechanism that abuts against the second filtering component and is capable of rotating around the first axis; The spiral driving mechanism rotates to squeeze the second filtering component to generate periodic deformation and at the same time produce a backwashing effect on the lubricating oil; The cross-section of the spiral driving mechanism perpendicular to the first axis is elliptical, and its outer edge periodically squeezes the second filtering component during rotation; The first filtering component includes a rigid wheel provided with a plurality of grooves; the second filtering component includes a flexible wheel provided with a plurality of bumps; the flexible wheel deforms under the drive of the spiral driving mechanism, and the number of the grooves is more than the number of the bumps, so that the bumps and the grooves cooperate to achieve reverse rotation of the flexible wheel; The first filtering component further includes a first filtering layer for performing coarse filtering; the second filtering component further includes a second filtering layer for performing fine filtering; The second filtering component includes a fixing frame, the second filtering layer is fixedly connected to the fixing frame, and the fixing frame is fixedly connected to the flexible wheel; The filtering mechanism further includes a driving shaft, a dynamic sealing ring and a static sealing ring. The dynamic sealing ring rotates with the driving shaft and contacts the static sealing ring to seal the connection between the static sealing ring and the filtering housing; The filtering mechanism further includes an elastic mechanism fixedly connected to the dynamic sealing ring, and the elastic force of the elastic mechanism always makes the dynamic sealing ring tend to slide towards the static sealing ring.

2. The box-type lubricating oil filter according to claim 1, characterized in that, A plurality of filtering holes are provided on the first filtering layer, and a plurality of filtering holes are provided on the second filtering layer. The filtering hole diameter of the first filtering layer is larger than the filtering hole diameter of the second filtering layer.

3. The box-type lubricating oil filter according to claim 1, wherein, It further includes a feed pipe and a discharge pipe. The feed pipe is provided on the side wall of the filtering housing, and the discharge pipe is provided at the bottom of the filtering housing.

4. The box-type lubricating oil filter according to claim 3, characterized in that, A plurality of the filtering mechanisms are provided, and the plurality of filtering mechanisms are connected through the feed pipe and the discharge pipe.

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