Oil way filter

Abstract

The utility model provides an oil way filter which comprises a shell, a filter element and a filter element seat, an oil inlet and an oil outlet are formed in the top of the shell, a plurality of lifting bolts are further installed on the filter element seat, the filter element seat is installed above the shell, the ends of the lifting bolts are fixed to the shell, the filter element is located in the shell, and the filter element is installed at the bottom of the filter element seat. The filter element seat comprises an insertion part, the insertion part is generally in an inverted cone frustum shape, a first sealing conical curved surface is formed on the peripheral surface of the insertion part, a second sealing conical curved surface is formed on the top of the inner wall of the corresponding shell, the insertion part is inserted into the shell, and the first sealing conical curved surface is tightly attached to the second sealing conical curved surface. According to the oil way filter, the filter element can be taken out upwards under the condition that peripheral pipelines are not disassembled, the filter is visual and simple to clean and maintain, the workload is small, and misoperation can be avoided; the shell is left on the pipeline, so that oil overflowing can be effectively reduced, and pollution to a working site is avoided; and the filter element seat is more convenient to disassemble and fasten through the lifting bolt.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters and relates to an oil line filter. Background Art

[0002] Before the vacuum pumps such as sliding valve pumps and rotary vane pumps are exhausted, the impurities in the pumped gas are suspended in the airflow, which has little effect on the lubrication and sealing effects in the pump cavity. When exhausting, the impurities are mixed into the lubricating oil, and the impurities generated by normal wear during the operation of the pump are also mixed into the lubricating oil. If the impurities are not removed, the impurities will seriously affect the lubrication effect of the lubricating oil, causing abnormal wear of the parts in the pump cavity due to insufficient lubrication, and the life and stability of the pump will drop sharply, and even the pump will get stuck; at the same time, the impurities will reduce the sealing effect of the lubricating oil, and the pumping performance of the pump will be significantly reduced; impurities are also easy to settle on the oil pipe, and long-term use will easily cause the oil pipe to be blocked. In response to this situation, an oil circuit filter device has appeared on the market, such as the simple oil circuit filter device with replaceable filter element described in Chinese Patent No.: "201820880248.5". The specific structure of the oil circuit filter device is as follows: it includes a filter housing, a filter end cover, a filter element and a sealing ring. The filter housing is provided with an oil inlet and a cavity. The filter end cover is detachably connected to the filter housing. The filter end cover is provided with an oil outlet. The filter element is installed in the cavity of the filter housing. Both sides of the filter element are provided with sealing rings, and the sealing ring is in close contact with the filter element. When replacing the filter element, you only need to reversely unscrew the filter end cover, take out the filter element and the sealing ring, then put the new filter element and the sealing ring into the cavity, and re-tighten the filter end cover.

[0003] In the above structure, the filter element needs to be replaced by removing the filter end cover first. At this time, the oil in the filter housing is easy to overflow and pollute the workplace; and the filter element may be blocked or damaged and leak during use. However, the above structure cannot detect the abnormality of the filter element in time, resulting in insufficient filtration of impurities in the oil, affecting the normal operation of the equipment. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and provides an oil filter which can remove the filter element upwards without removing the surrounding pipelines to reduce oil overflow.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an oil filter, including a shell, a filter element and a filter element seat, the top of the shell is formed with an oil inlet and an oil outlet, the filter element seat is also installed with a plurality of lifting screws, the filter element seat is installed above the shell, the end of the lifting screw is fixed to the shell, the filter element is located in the shell, and the filter element is installed at the bottom of the filter element seat.

[0006] In the above-mentioned oil filter, the filter element seat includes an insertion portion, which is generally in the shape of an inverted frustum of a cone. The outer peripheral surface of the insertion portion forms a first sealing conical surface, and the top of the corresponding inner wall of the shell forms a second sealing conical surface. The insertion portion is inserted into the shell, and the first sealing conical surface and the second sealing conical surface are tightly attached.

[0007] In the above-mentioned oil filter, the filter element seat also includes a filter element seat flange, the insertion portion is located below the filter element seat flange, the top surface of the shell is also formed with a sealing groove, a sealing ring is arranged in the sealing groove, the bottom surface of the filter element seat flange is in contact with the top surface of the shell, and the sealing ring seals the contact between the filter element seat flange and the shell.

[0008] In the above-mentioned oil filter, an oil inlet channel, an oil outlet channel and an observation channel are formed on the filter element seat, the oil inlet channel is connected to the oil inlet port, the oil outlet channel is connected to the oil outlet port, the observation channel is arranged between the oil inlet channel and the oil outlet channel, the observation channel is connected to the oil outlet channel, the top opening of the observation channel is located on the top surface of the filter element seat, and the top opening of the observation channel is installed with a glass oil mirror, and the glass oil mirror is used to observe the filtered oil.

[0009] In the above-mentioned oil filter, the oil inlet and the oil outlet are arranged at the same height.

[0010] The above-mentioned oil filter further includes an electric contact pressure gauge and an electric contact thermometer, and the electric contact pressure gauge and the electric contact thermometer are both arranged on the oil inlet.

[0011] In the above-mentioned oil filter, a sewage outlet is formed at the bottom of the shell, and a sewage valve is installed on the sewage outlet.

[0012] Compared with the prior art, after the oil filter is installed in the oil circuit, the filter element can be taken out upwards without removing the surrounding pipelines. The filter cleaning and maintenance operations are intuitive and simple, with less workload, which is conducive to avoiding misoperation; and leaving the shell on the pipeline can effectively reduce oil spillage and avoid contaminating the workplace; the filter element seat is fixed by the eye screw, which makes the disassembly and tightening of the filter element seat more convenient, avoiding disassembly and assembly damage, and no special tools are required, which is convenient for emergency cleaning of the filter during inspections, and is also convenient for use as a pull ring to apply force when the filter element seat is taken out upwards; the first sealing conical surface and the second sealing conical surface are both conical surfaces, which can eliminate the gap between the surfaces through axial displacement, so that the first sealing conical surface and the second sealing conical surface are tightly fitted, so that the filter element seat is accurately positioned in the center of the shell. The filter element is centered and fits tightly with the housing radially to avoid oil leakage gap between the filter element seat and the housing, and to prevent unfiltered oil from directly leaking to the oil outlet through the gap; the glass oil mirror is used to observe the filtered oil to determine whether the filtering effect is up to standard or whether the filter element is damaged or leaking; the electric contact pressure gauge can read the oil pressure in the filter on the spot, which is convenient for obtaining oil pressure information during inspection and timely processing; at the same time, the electric contact switch can send an alarm signal to the control system to avoid the filter element from being damaged due to excessive internal and external pressure difference, and ensure that impurities do not enter the pump cavity; the electric contact thermometer controls the viscosity of the lubricating oil in the pump cavity by controlling the pump oil inlet temperature, so that the pump cavity can obtain satisfactory sealing and lubrication effects when the slide valve pump is working, thereby improving the pumping performance and stability of the pump, and providing fault warning through oil temperature information feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the oil filter.

[0014] Figure 2 It is another cross-sectional structural schematic diagram of the oil filter.

[0015] In the figure, 1. housing; 11. oil inlet; 12. oil outlet; 13. sealing ring; 2. filter element; 3. filter element seat; 31. oil inlet channel; 32. oil outlet channel; 33. observation channel; 34. filter element seat flange; 35. insertion part; 36. lifting eye screw; 37. first sealing conical surface; 4. glass oil mirror; 5. electric contact pressure gauge; 6. electric contact thermometer; 7. drain valve. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 and Figure 2As shown, the oil filter comprises a housing 1, a filter element 2 located in the housing 1, and a filter element seat 3 installed on the top of the housing 1. The filter element 2 is installed at the bottom of the filter element seat 3. The top of the housing 1 is formed with an oil inlet 11 and an oil outlet 12, and the oil inlet 11 and the oil outlet 12 are arranged at the same height. The filter element seat 3 is formed with an oil inlet channel 31, an oil outlet channel 32 and an observation channel 33, the oil inlet channel 31 is connected with the oil inlet 11, the oil outlet channel 32 is connected with the oil outlet 12, the observation channel 33 is arranged between the oil inlet channel 31 and the oil outlet channel 32, the observation channel 33 is connected with the oil outlet channel 32, the top opening of the observation channel 33 is located on the top surface of the filter element seat 3, and the top opening of the observation channel 33 is installed with a glass oil mirror 4. The oil in the oil circuit enters the housing 1 through the oil inlet 11 and the oil inlet channel 31, and the oil is discharged through the oil outlet channel 32 and the oil outlet 32 ​​after being filtered by the filter element 2; the glass oil mirror 4 is used to observe the filtered oil and judge whether the filtering effect is up to standard, or judge whether the filter element 2 is damaged or leaking. The housing 1 is made of aluminum alloy, which has good natural heat dissipation effect, is conducive to reducing the oil temperature, improving the performance of the pump, and greatly reducing the overall weight of the filter and the load on the pipeline.

[0018] In the above technical solution: the filter element seat 3 includes a filter element seat flange 34 and an insert portion 35 located below the filter element seat flange 34. The insert portion 35 is generally in the shape of an inverted truncated cone, and the outer peripheral surface of the insert portion 35 forms a first sealing conical surface 37. The oil outlet channel 32 is located in the insert portion 35, and the lower outer ring annular cutout portion of the insert portion forms an oil inlet channel 31, so that the top of the first sealing conical surface 37 is a complete conical surface, and the lower part of the first sealing conical surface 37 is a partial conical surface. The inner wall of the housing 1 is correspondingly formed with a second sealing conical surface. The top surface of the housing 1 is also formed with a sealing groove, and a sealing ring 13 is arranged in the sealing groove. A number of eyebolts 36 are also installed on the filter element seat 3. The filter element seat 3 is installed above the housing 1, and the insertion portion 35 is inserted into the housing 1. The first sealing conical surface 37 and the second sealing conical surface are in close contact. The bottom surface of the filter element seat flange 34 is in contact with the top surface of the housing 1, and the contact between the filter element seat flange 34 and the housing 1 is sealed by the sealing ring 13. The end of the eyebolt 36 is fixed to the housing 1, and the installation of the filter element seat 3 and the housing 1 is completed. The first sealing conical surface 37 and the second sealing conical surface are both conical surfaces, which can eliminate the gap between the surfaces through axial displacement, so that the first sealing conical surface 37 and the second sealing conical surface fit closely, so that the filter element seat 3 is accurately positioned at the center of the housing 1, and the filter element seat 3 and the housing 1 are closely fitted radially, avoiding the oil leakage gap between the filter element seat 3 and the housing 1, and preventing the unfiltered oil from directly leaking through the gap to the oil outlet.

[0019] When the filter element 2 needs to be disassembled and replaced, the eyebolt 36 is rotated to loosen the filter element seat 3 and the housing 1, and then the eyebolt 36 is used as a pull ring to apply force upward, so that the filter element seat 3 drives the filter element 2 upward, and the filter element 2 is taken out upward. Taking advantage of the structural characteristics of the eyebolt 36, it can be used as a fastener, a knockout piece, a pull ring, etc., without the need for special tools, and it is convenient to perform emergency cleaning of the filter on site when necessary.

[0020] The above technical solution also includes an electric contact pressure gauge 5 and an electric contact thermometer 6. The electric contact pressure gauge 5 and the electric contact thermometer 6 are both arranged on the oil inlet 11. The electric contact pressure gauge 5 can read the oil pressure in the filter on site, so as to obtain the oil pressure information and process it in time during the inspection; at the same time, the electric contact switch can send an alarm signal to the control system to avoid the filter element from being damaged due to the excessive pressure difference between the inside and the outside, and ensure that impurities do not enter the pump cavity. The electric contact thermometer 6 controls the viscosity of the lubricating oil in the pump cavity by controlling the pump oil inlet temperature, so that the pump cavity can obtain satisfactory sealing and lubrication effects when the slide valve pump is working, thereby improving the pumping performance and stability of the pump, and providing fault warning through oil temperature information feedback.

[0021] In the above technical solution: a sewage outlet is formed at the bottom of the shell 1, and a sewage valve 7 is installed on the sewage outlet.

[0022] After the oil filter is installed in the oil circuit, the filter element can be taken out upward without removing the surrounding pipelines. The filter cleaning and maintenance operations are intuitive and simple, with less workload, which is conducive to avoiding misoperation; and leaving the shell 1 on the pipeline can effectively reduce oil overflow and avoid contamination of the workplace.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although this article uses more terms such as housing 1; oil inlet 11; oil outlet 12; sealing ring 13; filter element 2; filter element seat 3; oil inlet channel 31; oil outlet channel 32; observation channel 33; filter element seat flange 34; insert 35; eye screw 36; first sealing conical surface 37; glass oil mirror 4; electric contact pressure gauge 5; electric contact thermometer 6; drain valve 7, it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. An oil filter, characterized in that The invention comprises a housing (1), a filter element (2) and a filter element seat (3); the top of the housing (1) is provided with an oil inlet (11) and an oil outlet (12); the filter element seat (3) is also provided with a plurality of eyebolts (36); the filter element seat (3) is installed above the housing (1); the ends of the eyebolts (36) are fixed to the housing (1); the filter element (2) is located in the housing (1); and the filter element (2) is installed at the bottom of the filter element seat (3).

2. The oil filter according to claim 1, characterized in that The filter element seat (3) comprises an inserting portion (35), the inserting portion (35) being generally in the shape of an inverted truncated cone, the outer peripheral surface of the inserting portion (35) forming a first sealing conical surface (37), and the top of the corresponding inner wall of the shell (1) being formed with a second sealing conical surface, the inserting portion (35) being inserted into the shell (1), the first sealing conical surface (37) and the second sealing conical surface being in close contact with each other.

3. The oil filter according to claim 2, characterized in that The filter element seat (3) further comprises a filter element seat flange (34), the insertion portion (35) is located below the filter element seat flange (34), the top surface of the shell (1) is also provided with a sealing groove, a sealing ring (13) is arranged in the sealing groove, the bottom surface of the filter element seat flange (34) is in contact with the top surface of the shell (1), and the sealing ring (13) seals the contact between the filter element seat flange (34) and the shell (1).

4. The oil filter according to claim 1, characterized in that The filter element seat (3) is provided with an oil inlet channel (31), an oil outlet channel (32) and an observation channel (33); the oil inlet channel (31) is communicated with the oil inlet port (11); the oil outlet channel (32) is communicated with the oil outlet port (12); the observation channel (33) is arranged between the oil inlet channel (31) and the oil outlet channel (32); the observation channel (33) is communicated with the oil outlet channel (32); the top opening of the observation channel (33) is located on the top surface of the filter element seat (3); a glass oil mirror (4) is installed at the top opening of the observation channel (33); the glass oil mirror (4) is used to observe the filtered oil.

5. The oil filter according to claim 1, characterized in that The oil inlet (11) and the oil outlet (12) are arranged at the same height.

6. The oil filter according to claim 1, characterized in that It also comprises an electric contact pressure gauge (5) and an electric contact thermometer (6), wherein the electric contact pressure gauge (5) and the electric contact thermometer (6) are both arranged on the oil inlet (11).

7. The oil filter according to claim 1, characterized in that The bottom of the housing (1) is provided with a sewage outlet, and a sewage valve (7) is installed on the sewage outlet.

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