Filter and oil pump assembly

Abstract

The application provides a filter, which comprises an upper cover, a middle cover and a lower cover, a filter screen is arranged between the upper cover and the middle cover, the lower cover is provided with a central through hole, an upper annular cavity and a lower annular cavity, an annular sliding sheet is arranged in the upper annular cavity, a downward counterweight oil pipe is fixedly arranged in the inner hole of the annular sliding sheet, the lower end of the counterweight oil pipe is outwardly penetrated through the central through hole of the lower cover, the outer diameter of the counterweight oil pipe is less than the diameter of the central through hole, the diameter of the annular sliding sheet is less than the inner diameter of the upper annular cavity, and the annular sliding sheet and the counterweight oil pipe can move horizontally in the lower cover. The application also provides an oil pump provided with the filter. The filter provided by the application can move the oil inlet according to the inclination angle, ensures that the oil inlet is always below the oil level line, greatly optimizes the oil suction effect, and thus avoids engine failure caused by pressure fluctuation.

Description

Technical Field

[0001] This invention relates to the field of oil pump technology, specifically to a filter and an oil pump equipped with such a filter. Background Technology

[0002] The oil filter of an oil pump is usually installed at the oil inlet of the oil pump. Its main function is to filter the oil entering the pump, preventing particulate matter or impurities from entering the pump and protecting the normal operation of the pump and engine. The basic structure of the oil filter includes an oil filter screen, a housing, and an inlet section. The oil filter screen is usually made of fine metal mesh or filter paper, which can effectively filter out dirt and particulate matter in the oil; the housing is a container used to fix and protect the oil filter screen; the inlet section is the entrance of the oil filter screen, used to introduce unfiltered oil into the oil filter screen for filtration.

[0003] The design of the oil pump strainer effectively extends the service life of the engine and oil pump, improving engine efficiency and reliability. Regularly replacing and cleaning the strainer keeps the oil clean and effectively prevents damage to the oil pump and engine.

[0004] like Figure 1 , 2 As shown, the existing filter includes an upper cover, a filter screen, and a lower cover. The filter screen is located between the upper and lower covers. The upper cover has a fixed oil outlet, and the lower cover has a fixed oil inlet. Since the oil inlet is fixed, when the vehicle is going uphill or downhill, the vehicle body will form an angle with the horizontal line, which will cause the oil level in the oil pan to change. At this time, air may be sucked in at the inlet of the filter, which will lead to pressure fluctuations and cause engine failure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a filter with better oil suction effect and to provide an oil pump equipped with the above-mentioned filter.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a filter, including an upper cover, a middle cover, and a lower cover, with a filter screen installed between the upper cover and the middle cover. The lower cover is provided with a central through hole, an upper annular cavity, and a lower annular cavity. An annular slide is installed in the upper annular cavity, and a downward counterweight oil pipe is fixedly installed in the inner hole of the annular slide. The lower end of the counterweight oil pipe extends outward through the central through hole of the lower cover. The outer diameter of the counterweight oil pipe is less than the diameter of the central through hole, less than the diameter of the annular slide, and less than the inner diameter of the upper annular cavity. The annular slide and the oil pipe can move horizontally within the lower cover.

[0007] In the above technical solution, since the annular vane and the oil pipe can move horizontally within the lower cover, when the vehicle tilts, the counterweight oil pipe will slide to a lower position in the oil pan under the action of gravity to better draw in oil.

[0008] Furthermore, a telescopic folding gasket is installed between the counterweight oil pipe and the central through hole. The telescopic folding gasket can fold and extend with the counterweight, and its installation further seals the area, preventing air from being drawn into the filter.

[0009] Furthermore, multiple tension springs are installed between the counterweight oil pipe and the lower annular cavity. When the vehicle is in a level position, the counterweight oil pipe can return to the middle position under the action of the tension springs around it.

[0010] Furthermore, the upper end face of the annular slide is provided with multiple radial grooves, which can prevent the annular slide from getting stuck due to air or oil blockage.

[0011] In one embodiment, the annular vane and the configuration oil pipe are installed together by an interference fit.

[0012] In one embodiment, the top cover is provided with a connecting flange for connecting an oil pump.

[0013] The present invention also provides an oil pump equipped with the above-mentioned filter.

[0014] The filter provided by this invention allows the oil inlet to move according to the tilt angle, ensuring that the oil inlet is always below the oil level line, which greatly optimizes the oil suction effect and thus avoids engine failure caused by pressure fluctuations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a traditional filter collection device. Figure 2 for Figure 1 A schematic diagram of the exploded structure of the filter; Figure 3 This is a schematic diagram of the exploded structure of the filter in an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the filter in an embodiment of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the filter in an embodiment of the present invention; The attached figures are labeled as follows: 1 - Top cover 2 - Filter screen 3 - Bottom cover 4—Middle cover; 5—Annular sliding vane; 6—Counterweight oil pipe 7 - Telescopic folding pad; 8 - Tension spring. Detailed Implementation

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0017] It should be noted in advance that, in this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0018] like Figures 2 to 3 The filter shown includes an upper cover 1, a middle cover 4, and a lower cover 3. The upper cover 1 has a connecting flange for connecting an oil pump, and a filter screen 2 is installed between the upper cover 1 and the middle cover 4. The lower cover 3 has a central through hole, an upper annular cavity, and a lower annular cavity. An annular slide 5 is installed in the upper annular cavity, and a downward counterweight oil pipe 6 is fixedly installed in the inner hole of the annular slide 5 by an interference fit. The lower end of the counterweight oil pipe 6 extends outward through the central through hole of the lower cover 3. The outer diameter of the counterweight oil pipe 6 is less than the diameter of the central through hole and less than the diameter of the annular slide 5. The inner diameter of the upper annular cavity allows the annular slide 5 and the oil pipe 6 to move horizontally within the lower cover 3. To prevent the annular slide 5 from jamming due to air or oil blockage, multiple radial grooves are provided on the upper end face of the annular slide 5. To better seal and prevent air from being sucked into the filter, a telescopic folding pad 7 is installed between the counterweight oil pipe 6 and the central through hole. Multiple tension springs 8 are installed between the counterweight oil pipe 6 and the lower annular cavity. When the vehicle is in a horizontal state, the counterweight oil pipe 6 can return to the middle position under the action of the tension springs 8 around it.

[0019] The above structure allows the annular vane 5 and the oil pipe 6 to move horizontally within the lower cover 3. Thus, when the vehicle tilts, the counterweight oil pipe 6 will slide to a lower position in the oil pan under the action of gravity to better draw in oil.

[0020] The filter provided in this embodiment allows the oil inlet to move according to the tilt angle, ensuring that the oil inlet is always below the oil level line, which greatly optimizes the oil suction effect and thus avoids engine failure caused by pressure fluctuations. Example 2

[0021] This embodiment provides an oil pump on which the filter from Embodiment 1 is installed.

[0022] To facilitate understanding by those skilled in the art of the improvements of this invention over the prior art, some of the accompanying drawings and descriptions have been simplified. The above embodiments are preferred implementations of this invention. In addition, this invention can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this invention.

Claims

1. A filter collector, characterized in that: The device includes an upper cover (1), a middle cover (4), and a lower cover (3). A filter screen (2) is installed between the upper cover (1) and the middle cover (4). The lower cover (3) has a central through hole, an upper annular cavity, and a lower annular cavity. An annular slide (5) is installed in the upper annular cavity. A downward counterweight oil pipe (6) is fixedly installed in the inner hole of the annular slide (5). The lower end of the counterweight oil pipe (6) extends outward through the central through hole of the lower cover (3). The outer diameter of the counterweight oil pipe (6) is less than the diameter of the central through hole, less than the diameter of the annular slide (5), and less than the inner diameter of the upper annular cavity. The annular slide (5) and the counterweight oil pipe (6) can move horizontally within the lower cover (3). A telescopic folding pad (7) is installed between the counterweight oil pipe (6) and the central through hole. Multiple tension springs (8) are installed between the counterweight oil pipe (6) and the lower annular cavity. Multiple radial grooves are provided on the upper end face of the annular slide (5).

2. The filter according to claim 1, characterized in that: The annular sliding plate (5) and the oil pipe (6) are installed together by an interference fit.

3. The filter according to claim 1, characterized in that: The upper cover (1) is provided with a connecting flange for connecting the oil pump.

4. An oil pump, characterized in that: The oil pump is equipped with a filter as described in any one of claims 1 to 3.

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