Oil bath type steel wire filter element assembly and oil bath type air filter

Abstract

The utility model relates to an air filter, in order to solve the problem that a steel wire filter element in an existing air filter is difficult to clean, the utility model provides an oil bath type steel wire filter element assembly and an oil bath type air filter, and the oil bath type steel wire filter element assembly comprises a steel wire filter element and a filter element cage used for containing the steel wire filter element; the steel wire filter element comprises a plurality of steel wire filter element discs which are stacked in sequence. The steel wire filter element is formed by stacking the multiple layers of steel wire filter element discs, when the air filter is maintained and cleaned, the steel wire filter element can be decomposed into the multiple separated steel wire filter element discs, and compared with a steel wire filter element of an integrated structure, the steel wire filter element discs are small in thickness and convenient to clean in an oil immersion mode or a water flushing mode or a burning mode or the like. The steel wire filter element is restrained and fixed by the filter element cage and can be conveniently taken out from the shell of the air filter.

Description

Technical Field

[0001] The utility model relates to an air filter, and more specifically, to an oil bath type steel wire filter element assembly and an oil bath type air filter. Background Art

[0002] The oil bath type air filter is a component of the engine intake system, and its function is to filter out dust in the intake air, provide clean air for the system, protect the engine cylinders, pistons and piston rings, and extend the service life of the engine.

[0003] The structure of the oil bath type air filter generally includes a housing, an outlet pipe, an inlet pipe, and a cylindrical integral steel wire filter element. The filtering principle of the oil bath type air filter is to draw the engine oil in the oil sump into the steel wool filter element by the force of the intake air flow, and then the engine oil turns into small oil droplets and drips down under the action of gravity through the steel wire filter element, and flushes the incoming air head-on in an oil bath, so that the dust in the air combines with the oil droplets and falls to achieve the purpose of filtration.

[0004] As the usage time of the oil bath type air filter increases, the impurities in the engine oil increase, the viscosity decreases, and the dust removal effect decreases. Therefore, the oil bath type air filter needs to be maintained regularly, and its good dust removal ability can be maintained by replacing the engine oil, cleaning or replacing the steel wire filter element.

[0005] The cleaning method of the steel wire filter element is usually burning or flushing with high-pressure water flow. Since the existing steel wire filter element is an integral body, it is difficult to remove the internal oil stain of the steel wire filter element by burning and water flushing; in addition, when the viscosity of the engine oil increases, the engine oil sticks the steel wire filter element to the housing, and it is difficult to take out the steel wire filter element from the housing for cleaning during maintenance. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is the problem that the steel wire filter element of the existing oil bath type air filter is difficult to take out and clean, and an oil bath type steel wire filter element assembly and an oil bath type air filter are provided, which facilitate taking out the steel wire filter element and cleaning it during the maintenance of the air filter.

[0007] The technical solution of the utility model to achieve its purpose is: an oil bath type steel wire filter element assembly, wherein the steel wire filter element includes a plurality of steel wire filter element discs stacked in sequence and a fixing device for locking and fixedly connecting the steel wire filter element discs together.

[0008] In the oil bath type steel wire filter element assembly of the utility model, a planar isolation frame for increasing the distance between two adjacent steel wire filter element discs is arranged between two adjacent steel wire filter element discs.

[0009] In the oil bath type steel wire filter element assembly of the utility model, the thickness of the steel wire filter element disc is less than 1 cm.

[0010] In the oil-bath type steel wire filter element assembly of the present utility model, the steel wire filter element disc is in a disc shape, and an air inlet pipe avoidance hole is provided at its center.

[0011] In the oil-bath type steel wire filter element assembly of the present utility model, the fixing device is in a cage-like structure, which includes a cylindrical part for contacting the side surface of the steel wire filter element and a bottom part fixedly connected to the cylindrical part for contacting the bottom surface of the steel wire filter element. Both the cylindrical part and the bottom part are grid structures formed by welding steel wire strips. Further, a grid-like filter element holder is provided at the top of the steel wire filter element, and the radial edge of the filter element holder is detachably and fixedly connected to the top of the cylindrical part.

[0012] In the oil-bath type steel wire filter element assembly of the present utility model, each of the steel wire filter element discs is provided with a plurality of axial through holes that can be coaxially aligned. The fixing device is composed of bolts axially penetrating the axial through holes in each of the steel wire filter element discs and nuts threadedly engaged with the bolts. After stacking a plurality of steel wire filter element discs, the steel wire filter element discs are locked and fixedly connected by the cooperation of bolts and nuts.

[0013] The technical solution for the present utility model to achieve its purpose is: an oil-bath type air filter, which has the aforementioned oil-bath type steel wire filter element assembly.

[0014] The technical solution for the present utility model to achieve its purpose is: an oil-bath type air filter, including a steel wire filter element, and the steel wire filter element includes a plurality of steel wire filter element discs stacked in sequence.

[0015] In the oil-bath type air filter of the present utility model, a grid structure spacer for increasing the distance between two adjacent steel wire filter element discs is provided between two adjacent steel wire filter element discs.

[0016] In the oil-bath type air filter of the present utility model, the thickness of the steel wire filter element disc is less than 1 centimeter.

[0017] Compared with the prior art, the steel wire filter element of the present utility model is composed of multiple layers of stacked steel wire filter element discs. When maintaining and cleaning the air filter, the steel wire filter element can be disassembled into multiple separate steel wire filter element discs. The steel wire filter element disc is thinner than the integral structure steel wire filter element, which is convenient for cleaning by methods such as oil immersion, water flushing or burning. Brief Description of the Drawings

[0018] Figure 1 is an exploded view of the oil-bath type steel wire filter element assembly of the present utility model.

[0019] Figure 2 is an exploded view of the oil-bath type air filter of the present utility model.

[0020] Figure 3 is a cross-sectional view of the oil-bath type air filter of the present utility model.

[0021] Figure 4 It is a schematic structural diagram of another oil-bath air filter in the present utility model.

[0022] Names and serial numbers of components in the figure:

[0023] Steel wire filter element assembly 100.

[0024] Filter element cage 1, cylindrical part 10, upper ring 11, lower ring 12, vertical bars 13, bottom 14, inner bottom ring 15, bottom spokes 16.

[0025] Steel wire filter element disc 2, air inlet pipe avoidance hole 20.

[0026] Isolation frame 3.

[0027] Filter element holder 4, buckle 41.

[0028] Upper shell 210, air inlet 211, air outlet 212.

[0029] Lower shell 220, lower limit rib 221.

[0030] Air inlet pipe 230, upper limit rib 231. Specific implementation manners

[0031] The following describes the specific implementation manners in conjunction with the accompanying drawings.

[0032] Embodiment 1.

[0033] As Figure 1 shown, this embodiment provides an oil-bath steel wire filter element assembly 100, which includes a steel wire filter element. The steel wire filter element includes a plurality of steel wire filter element discs 2 stacked in sequence and a fixing device for locking and fixedly connecting the steel wire filter element discs 2 together.

[0034] The steel wire filter element is composed of a plurality of stacked steel wire filter element discs 2. When cleaning the steel wire filter element, the individual steel wire filter element discs 2 in the steel wire filter element can be separated and cleaned and maintained separately.

[0035] When the height of the steel wire filter element is the same, compared with an integral steel wire filter element, the thickness of the steel wire filter element disc 2 is smaller. In the cleaning methods of oil immersion, burning or water flushing, the inside of the steel wire filter element disc 2 is easier to clean. Optionally, the thickness of the steel wire filter element disc 2 is less than 1 cm.

[0036] Optionally, a planar isolation frame 3 is provided between two adjacent wire filter element discs 2 to increase the distance between the two wire filter element discs 2, facilitating the separation of two adjacent wire filter element discs 2. The wire filter element disc 2 is made of wire, and its axial surfaces (top and bottom surfaces) are usually planar. If two adjacent wire filter element discs 2 are directly in contact, the gap between the two wire filter element discs 2 is small. When the viscosity of the engine oil increases, the two adjacent wire filter element discs 2 are firmly adhered together by the engine oil and are difficult to separate. By providing the isolation frame 3 between two adjacent wire filter element discs 2, the distance between the two wire filter element discs 2 is increased, facilitating the separation of the two wire filter element discs 2.

[0037] The planar isolation frame 3 presents a flat shape in space and can be made of a metal material. For example, it is formed by crisscross welding of wire strips to form a grid structure, or is composed of a plurality of concentrically arranged annular wire strips welded to a plurality of radial wire straight strips. The isolation frame 3 can also be made of plastic.

[0038] Optionally, the wire filter element disc 2 is in a disc shape, and an air inlet pipe avoidance hole 20 is provided at its center. The air inlet pipe 230 is inserted into the air inlet pipe avoidance holes 20 of each wire filter element disc 2 in the wire filter element, guiding air to enter below the wire filter element from top to bottom, and then flowing upward through the gaps in the wire filter element disc 2. During the flowing process, dust in the air adheres to the engine oil, achieving air dust removal.

[0039] The fixing device is used to fixedly connect a plurality of wire filter element discs together, and it can be a filter element cage 1 in a cage shape. As Figure 1 shown, the filter element cage 1 includes a cylindrical part 10 for contacting the side surface of the wire filter element and a bottom part 14 fixedly connected to the cylindrical part 10 for contacting the bottom surface of the wire filter element. Both the cylindrical part 10 and the bottom part 14 are grid structures formed by welding wire strips.

[0040] The filter element cage 1 is used to fixedly connect a plurality of wire filter element discs 2 together, facilitating the overall installation of the wire filter element into the housing of the air filter and the removal from the housing of the air filter.

[0041] Figure 1 Shows the structure of a filter element cage. In this structure, the cylindrical part 10 is composed of an upper ring 11, a lower ring 12, and a plurality of vertical strips 13. The upper ring 11, the lower ring 12, and the vertical strips 13 are all wire strips. Among them, the vertical strips 13 are arranged in parallel at intervals in the circumferential direction, and the upper and lower ends of each vertical strip 13 are respectively welded to the upper ring 11 and the lower ring 12.

[0042] The bottom part 14 is composed of an inner bottom ring 15 and a plurality of radially arranged bottom spokes 16. Both the inner bottom ring 15 and the bottom spokes 16 are made of wire strips. The two ends of each bottom spoke 16 are respectively welded to the inner bottom ring 15 and the lower ring 12.

[0043] The wire filter element is installed in the filter element cage 1. The bottom 14 of the filter element cage 1 contacts the bottom surface of the lowermost wire filter element disc 2, and the vertical bars 13 in the cylindrical part 10 contact the cylindrical side surfaces of the wire filter element discs 2. The filter element cage 1 is used to accommodate the wire filter element and can be designed into a shape adapted to the shape of the wire filter element.

[0044] Optionally, a grid-shaped filter element holder 4 is provided at the top of the wire filter element. The radial edge of the filter element holder 4 is detachably and fixedly connected to the top of the cylindrical part 10. As Figure 1 shown, the filter element holder 4 is a grid structure formed by welding wire bars. The shape of its radial outer edge is adapted to the shape of the open end of the filter element cage 1. A buckle 41 is provided at the edge of the filter element holder 4, and the buckle 41 can be buckled and fixed to the upper ring 11 of the cylindrical part 10. After loading each wire filter element disc 2 into the filter element cage 1, the filter element holder 4 is loaded to prevent the wire filter element disc 2 from falling out of the filter element cage 1. When it is necessary to take out the wire filter element disc 2, the filter element holder 4 can be taken out and then the wire filter element discs 2 can be taken out layer by layer.

[0045] The fixing device can also be other structures. For example, the fixing device can also be composed of bolts axially penetrating through each of the wire filter element discs and nuts that are threadedly engaged with the bolts. Each wire filter element disc is provided with a plurality of axially through holes that can be coaxially aligned.

[0046] After a plurality of wire filter element discs are stacked, the wire filter element discs are locked and fixedly connected by the cooperation of bolts and nuts. When assembling the oil bath type wire filter element assembly, after stacking each wire filter element disc and the isolation frame in sequence, bolts are inserted into the axially through holes of the wire filter element discs, and nuts are used in cooperation to lock and fix each wire filter element disc. To better lock each wire filter element disc, holders can be respectively arranged on the bottom surface of the lowermost wire filter element disc and the top surface of the uppermost wire filter element disc. The bolts and nuts fixedly connect the upper and lower holders to lock and fix each wire filter element disc together.

[0047] Embodiment 2.

[0048] Figure 2 Figure 3 An oil bath type air filter is shown. In this oil bath type air filter, there is the wire filter element assembly 100 in Embodiment 1.

[0049] The housing of the oil-bath air filter is composed of an upper housing 210 and a lower housing 220. The upper housing 210 and the lower housing 220 form a space that can accommodate the steel wire filter element assembly 100, and the steel wire filter element assembly 100 is installed in the housing. An air inlet 211 is provided at the top of the upper housing 210, and an air outlet 212 is provided on the side. An air inlet pipe 230 is installed in the housing. The air inlet pipe 230 is inserted into the air inlet pipe avoidance hole 20 of the steel wire filter element disc 2. Its top end is connected to the air inlet 211, and the lower end leads directly to the bottom of the steel wire filter element, guiding air to enter below the steel wire filter element from the air inlet 211. Inside the lower housing 220, below the steel wire filter element is a space for storing engine oil. After the outside air enters the space below the steel wire filter element through the air inlet pipe from the air inlet, it enters the steel wire filter element together with the engine oil. The engine oil flowing downward due to gravity during the upward process meets the air, and dust and other impurities in the air adhere to the engine oil, and the clean air is discharged through the air outlet and supplied to the engine.

[0050] When the oil-bath air filter needs to be cleaned and maintained, separate the upper housing 210 and the lower housing 220, take out the oil-bath steel wire filter element assembly 100 from the lower housing 220, and then take out the steel wire filter element discs 2 layer by layer for cleaning. In this embodiment, compared with the integrated steel wire filter element, the thickness of the steel wire filter element disc 2 is smaller, which is easy to take out from the filter element cage 1 and is also easy to clean.

[0051] Embodiment III.

[0052] Figure 4 An oil-bath air filter is shown. The housing of the oil-bath air filter is composed of an upper housing 210 and a lower housing 220. The upper housing 210 and the lower housing 220 form a space that can accommodate the steel wire filter element, and the steel wire filter element is installed in the housing.

[0053] The steel wire filter element includes a plurality of steel wire filter element discs 2 stacked in sequence. Optionally, a spacer 3 for increasing the distance between two adjacent steel wire filter element discs 2 is provided between two adjacent steel wire filter element discs 2. The spacer 3 is flat in space and can be made of a metal material, such as a mesh structure formed by welding steel wire strips vertically and horizontally, or composed of a plurality of concentrically arranged annular steel wire strips welded to a plurality of radial steel wire straight strips. The spacer 3 can also be made of oil-resistant plastic. The thickness of a single steel wire filter element disc 2 is less than 1 cm.

[0054] An air inlet 211 is provided at the top of the upper shell 210, and an air outlet 212 is provided on the side. An intake pipe 230 is installed inside the outer shell. The intake pipe 230 is inserted into the intake pipe avoidance hole 20 of the steel wire filter element disc 2. Its top end is connected to the air inlet 211, and the lower end leads directly to the bottom of the steel wire filter element, guiding air to enter from the air inlet 211 below the steel wire filter element. Inside the lower shell 220, the space below the steel wire filter element is a space for storing engine oil. After the outside air enters the space below the steel wire filter element from the air inlet 211 through the intake pipe 230, it enters the steel wire filter element together with the engine oil. The engine oil flowing downward due to gravity during the rising process meets the air, and dust and other impurities in the air adhere to the engine oil, and the clean air is discharged through the air outlet 212 and supplied to the engine.

[0055] The steel wire filter element composed of a plurality of steel wire filter element discs 2 and the isolation frame 3 is directly installed in the outer shell. Lower limit ribs 221 are provided on the inner wall of the lower shell 220 for contacting and supporting the bottom surface of the steel wire filter element. Upper limit ribs 231 are provided on the intake pipe 230 for contacting the top surface of the low-pressure steel wire filter element. A seal can be provided between the steel wire filter element and the lower shell 230 to prevent air from flowing upward through the gap between the steel wire filter element and the lower shell 230.

[0056] In this embodiment, when it is necessary to clean and maintain the oil bath air filter, the upper shell 210 and the lower shell 220 are separated, and the oil bath steel wire filter element discs 2 are taken out layer by layer from the lower shell 220, or after the whole steel wire filter element, the steel wire filter element discs 2 are separated and cleaned. In this embodiment, relatively speaking, the thickness of the steel wire filter element disc 2 is small, it is easy to take out, and it is also easy to clean.

Claims

1. An oil bath type steel wire filter element assembly, comprising a steel wire filter element, characterized in that, The steel wire filter element includes a plurality of steel wire filter element discs stacked in sequence and a fixing device for locking and fixedly connecting the steel wire filter element discs together; a planar spacer is provided between adjacent steel wire filter element discs to increase the distance between adjacent steel wire filter element discs.

2. The oil-bath type steel wire filter element assembly according to claim 1, wherein, The thickness of the steel wire filter element disc is less than 1 cm.

3. The oil bath type steel wire filter element assembly according to claim 1, characterized in that, The fixing device has a cage-like structure and includes a cylindrical portion for contacting the side surface of the steel wire filter element and a bottom portion fixedly connected to the cylindrical portion for contacting the bottom surface of the steel wire filter element. Both the cylindrical portion and the bottom portion are grid structures formed by welding steel wire strips.

4. The oil bath type steel wire filter element assembly according to claim 3, characterized in that, A filter element retaining frame is provided at the top of the steel wire filter element, and the radial edge of the filter element retaining frame is detachably and fixedly connected to the top of the cylindrical portion.

5. The oil bath type steel wire filter element assembly according to claim 1, wherein, Each of the steel wire filter element discs is provided with a plurality of axially through holes that can be coaxially aligned. The fixing device is composed of bolts axially penetrating the axially through holes in the steel wire filter element discs and nuts threadedly engaged with the bolts.

6. An oil bath air filter, characterized in that, An oil-bath type steel wire filter element assembly according to any one of claims 1 to 5.

7. An oil bath air filter, comprising a wire filter element, characterized in that, The steel wire filter element includes a plurality of steel wire filter element discs stacked in sequence.

8. The oil bath type air filter according to claim 7, wherein, A planar spacer is provided between adjacent steel wire filter element discs to increase the distance between adjacent steel wire filter element discs.

9. The oil bath air filter according to claim 7, wherein, The thickness of the steel wire filter element disc is less than 1 cm.

Images