Filter maintenance system

Abstract

The utility model relates to the technical field of oil filters, and provides a filter maintenance system which comprises a first-stage filter, a third-stage filter and a second-stage filter which are connected in series, a first-stage filter screen and a first cleaning assembly are arranged in the first-stage filter, a filter element and a second cleaning assembly are arranged in the second-stage filter, and a second-stage filter screen is arranged in the third-stage filter; the first cleaning assembly comprises a stainless steel brush, an elastic piece is embedded in the root of the stainless steel brush, the stainless steel brush is detachably connected with the center shaft, the first driver is in driving connection with the center shaft, and the stainless steel brush performs mechanical friction on the surface of the primary filter screen; the second cleaning assembly comprises a base, a rotating shaft and a nitrogen pump, the filter element is used for being connected with the base, the rotating shaft penetrates through the filter element and is connected with the base, a plurality of nozzles are arranged on the rotating shaft, and the nitrogen pump is connected with the nozzles through hollow pipes in the rotating shaft. According to the low-temperature oil filter, the cleaning and maintenance quality of the low-temperature oil filter is improved, and the filtering efficiency and filtering quality of the oil filter are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil filter technical field, concretely relates to a filter maintenance system. BACKGROUND

[0002] The oil filter is used for treating the oil in the oil circuit system, and filters the impurities in the oil. The maintenance of the oil filter includes cleaning the filter material in the oil filter. At present, the filter material in the filter is usually removed after the filter is stopped, and then cleaned separately, or a new filter core is directly replaced. After the replacement or cleaning is completed, the filter core is installed in the filter. Alternatively, an automatic cleaning mechanism for the filter material is arranged. For example, the Chinese patent CN220047282U proposes a rotary automatic cleaning filter. The structure for automatically cleaning the filter core in the filter is arranged in the box of the filter. Specifically, the piston is driven by the air cylinder to push the push block to move along the screw rod. The rolling ball drives the brush to rotate in the moving process, so that the brush cleans the inner wall of the filter core. The impurities after cleaning are discharged from the shell through the blowdown port. The brush reciprocates in the filter. Although the automatic cleaning of the filter core in the filter is realized in the technology, the adhesion ability of the low-temperature oil is strong, and the cleaning ability of the brush is limited, so that the impurities in the oil filter cannot be cleaned efficiently and with high quality. SUMMARY

[0003] The utility model provides a filter maintenance system to solve the problem that the impurities in the oil filter cannot be cleaned efficiently and with high quality in the prior art.

[0004] The technical scheme of the utility model is as follows:

[0005] A filter maintenance system comprises a primary filter, a tertiary filter and a secondary filter which are connected in series. The tertiary filter is connected with the primary filter and the secondary filter through the cross connection of the oil pipes. The primary filter is provided with a primary filter screen and a first cleaning assembly. The secondary filter is provided with a filter core and a second cleaning assembly. The tertiary filter is provided with a secondary filter screen. The diameter of the filter hole of the primary filter screen is larger than that of the secondary filter screen.

[0006] The first cleaning assembly comprises a stainless steel brush. An elastic element is embedded in the root of the stainless steel brush. The stainless steel brush is detachably connected with a central shaft. A first drive is drivingly connected with the central shaft. The stainless steel brush is close to the surface of the primary filter screen and rubs the surface of the primary filter screen under the control of the rotating shaft.

[0007] The second cleaning assembly comprises a base, a rotating shaft and a nitrogen pump. The filter core is connected with the base. The rotating shaft penetrates through the filter core and is connected with the base. The rotating shaft comprises a plurality of nozzles. The nitrogen pump is connected with the nozzles through the air pipe in the rotating shaft.

[0008] Optionally, an electric heater is further included, which is connected with the primary filter screen.

[0009] Optionally, the second cleaning assembly further includes a second drive connected with the base to control the rotation of the filter core.

[0010] Optionally, the first cleaning assembly and the second cleaning assembly further include a blowdown valve connected with the residue discharge port of the primary filter and the secondary filter respectively.

[0011] Optionally, the primary filter and the secondary filter each include a cylindrical body, and an upper sealing seat and a lower sealing seat connected with the cylindrical body, and the upper sealing seat and the lower sealing seat are connected with the cylindrical body through a clamp.

[0012] Optionally, a condenser is further included, which is connected with the oil outlet of the secondary filter.

[0013] Optionally, an electronic valve is further included between the primary filter and the tertiary filter; a pressure sensor is arranged on the mounting end cover of the secondary filter screen in the tertiary filter, and the pressure sensor and the electronic valve are signal connected with a system control device.

[0014] Optionally, a backflow pump is further included, which is arranged between the outlet of the tertiary filter and the inlet of the primary filter.

[0015] The principle and beneficial effects of the utility model are as follows:

[0016] The principle of the filter maintenance system is that the oil to be filtered passes through the primary filter, the tertiary filter and the secondary filter in sequence, wherein the primary filter screen and the first cleaning assembly are arranged in the primary filter to realize the automatic cleaning of the first filter screen in the primary filter; the filter core for filtering oil and the second cleaning assembly for cleaning the filter core are arranged in the secondary filter to realize the automatic cleaning of the filter core; the secondary filter screen is arranged in the tertiary filter, which is a mechanism for filtering the oil filtered by the primary filter for the second time, mainly for removing the particle residues cleaned in the primary filter, and the particle residues are removed before being filtered in the secondary filter. The first cleaning assembly is used for automatically stripping the attachments on the primary filter screen by using the stainless steel brush; the second cleaning assembly is used for controlling the rotation of the filter core, and the attachments on the filter core are stripped by the nitrogen gas sprayed by the nozzle on the rotating shaft during the rotation.

[0017] The beneficial effects of the maintenance system are as follows:

[0018] Firstly, in the filter system composed of multiple-stage filters, the stainless steel brush in the first cleaning assembly removes the attachments on the first filter screen, the second filter screen removes the impurities not completely filtered in the first filter, avoids the impurities entering the second filter, and then the impurities are treated by the second filter, and the second cleaning assembly in the second filter automatically removes the impurities in the second filter, the three cleaning assemblies in the filters cooperate with each other, not only improve the cleaning and maintenance quality of the low-temperature oil filter, but also improve the filtering efficiency and filtering quality of the oil filter.

[0019] Secondly, the second cleaning assembly in the second filter blows nitrogen gas to the surface of the filter element to remove the filtering impurities on the surface of the filter element, and not only does not bring new impurities to aggravate the burden of the filter element, but also sets the low-temperature nitrogen gas to reduce the temperature of the oil in the filter and maintain the quality of the oil. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0021] Figure 1 The structure schematic view of the filter maintenance system provided by the utility model is shown in the figure.

[0022] Figure 2 The installation structure schematic view of the three-stage filter in the embodiment of the utility model is shown in the figure.

[0023] In the figure: 1, oil pipe; 2, first filter screen; 3, filter element; 4, second filter screen; 5, stainless steel brush; 6, center shaft; 7, base; 8, rotating shaft; 81, nozzle; 9, second drive; 10, blowdown valve; 11, cylindrical body; 12, upper sealing seat; 13, lower sealing seat; 100, first filter; 200, second filter; 300, third filter. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are involved in the protection scope of the utility model.

[0025] The oil filter is used for treating oil in an oil circuit system, filtering impurities in the oil. The maintenance of the oil filter includes cleaning the filter material inside the oil filter. At present, the filter material is usually removed after the filter is stopped and cleaned separately, or a new filter core is directly replaced, and after the replacement or cleaning is completed, the filter core is installed in the filter correspondingly. Alternatively, an automatic cleaning mechanism of the filter material is arranged, such as the rotating automatic cleaning filter proposed in Chinese patent CN220047282U, which is provided with a structure for automatically cleaning the filter core in the filter. Specifically, a piston is driven by a gas cylinder to push a push block to move along a screw rod, and a ball drives a brush to rotate in the moving process, so that the brush cleans the inner wall of the filter core. The impurities after cleaning are discharged from the shell through a blowdown port. In the technology, the brush moves reciprocatingly in the filter. Although the automatic cleaning of the filter core in the filter is realized, the cleaning ability of the brush is limited, and the low-temperature oil cannot be filtered efficiently and with high quality.

[0026] Hereinafter, the utility model will be described in detail (wherein Figure 1 and the accompanying drawings. Figure 2 The utility model discloses a filter maintenance system, which comprises a first filter 100, a third filter 300 and a second filter 200 arranged in series, a cross connection between the third filter 300 and the first filter 100 and the second filter 200 through an oil delivery pipe 1, a first filter screen 2 and a first cleaning assembly arranged in the first filter 100, a filter core 3 and a second cleaning assembly arranged in the second filter 200, and a second filter screen 4 arranged in the third filter 300, wherein the diameter of the filter hole of the first filter screen 2 is larger than that of the second filter screen 4. Figure 1 The first cleaning assembly comprises a stainless steel brush 5, and an elastic element is embedded in the root of the stainless steel brush 5. The elastic element can make the stainless steel brush flexible when it contacts the surface of the first filter screen 2, so as to avoid damaging the surface of the first filter screen 2. The stainless steel brush 5 is detachably connected with a central shaft 6, and the first driving is drivingly connected with the central shaft 6. The stainless steel brush 5 is close to the surface of the first filter screen 2 and rubs the surface of the first filter screen 2 under the control of a rotating shaft 8. The second cleaning assembly comprises a base 7, the rotating shaft 8 and a nitrogen pump. The filter core 3 is connected with the base 7, the rotating shaft 8 penetrates through the filter core 3 and is connected with the base 7, a plurality of nozzles 81 are arranged on the rotating shaft 8, and the nitrogen pump is connected with the nozzles 81 through an empty pipe in the rotating shaft 8.

[0027] Figure 1 The utility model discloses a filter maintenance system, which comprises a first filter 100, a third filter 300 and a second filter 200 arranged in series, a cross connection between the third filter 300 and the first filter 100 and the second filter 200 through an oil delivery pipe 1, a first filter screen 2 and a first cleaning assembly arranged in the first filter 100, a filter core 3 and a second cleaning assembly arranged in the second filter 200, and a second filter screen 4 arranged in the third filter 300, wherein the diameter of the filter hole of the first filter screen 2 is larger than that of the second filter screen 4.

[0028] As described above, in the utility model, the oil to be filtered passes through the first filter 100, the third filter 300 and the second filter 200 in sequence, wherein the first filter 100 is provided with a first filter screen 2 and a first cleaning assembly to realize automatic cleaning of the first filter screen in the first filter 100; the second filter 200 is provided with a filter core 3 for filtering oil and a second cleaning assembly for cleaning the filter core 3 to realize automatic cleaning of the filter core 3; as shown in Figure 2 The third filter 300 is provided with a second filter screen 4, which is a mechanism for secondary filtering of the oil filtered by the first filter 100, mainly to remove the particle residues that may exist in the first filter 100, and then fine filter after removing the particle residues. The first cleaning assembly automatically strips the attachments on the first filter screen 2 by using a stainless steel brush 5; the second cleaning assembly rotates the filter core 3, and the attachments on the filter core 3 are stripped by the nitrogen gas sprayed by the nozzle 81 on the rotating shaft 8.

[0029] In the filter system composed of multiple filters, the stainless steel brush 5 in the first cleaning assembly strongly removes the attachments on the first filter screen, the second filter screen 4 removes the impurities that are not completely filtered in the first filter 100 again to avoid the impurities entering the second filter 200, and then the impurities are treated by the second filter 200, wherein the second cleaning assembly in the second filter 200 automatically cleans the impurities inside, and the cleaning mechanisms in the three filters cooperate with each other, not only improving the cleaning and maintenance quality of the low-temperature oil filter, but also improving the filtering efficiency and filtering quality of the oil filter. In addition, the second cleaning assembly in the second filter 200 blows nitrogen gas to the surface of the filter core 3 to blow off the filtering impurities on the surface, which not only does not bring new impurities to aggravate the burden of the filter core 3, but also sets low-temperature nitrogen gas to reduce the temperature of the oil in the filter, avoid the deterioration of the oil due to the increase of the temperature of the oil, and thus maintain the quality of the oil.

[0030] Specifically, the first filter 100 and the second filter 200 each include a cylindrical body 11, an upper sealing seat 12 and a lower sealing seat 13 connected to the cylindrical body 11, and the upper sealing seat 12 and the lower sealing seat 13 are connected to the cylindrical body 11 by a clamp.

[0031] It should be noted that the second cleaning assembly further comprises a second drive 9 connected with the base 7 to control the rotation of the filter core 3. The second drive 9 can be an electric motor, which is connected with the base 7 to control the rotation of the filter core 3 on the base 7. Since the outlet nozzle 81 is fixed on the rotating shaft 8, the rotating shaft 8 is stationary, and the rotation of the filter core 3 is controlled to cooperate with the fixed brush head to achieve omnidirectional cleaning. In addition, the first cleaning assembly and the second cleaning assembly further comprise a blowdown valve 10 connected with the blowdown port of the primary filter 100 and the secondary filter 200, respectively. The blowdown valve 10 is used to remove the impurities filtered. The blowdown operation can be manually operated, and the blowdown valve 10 further comprises necessary sealing structures such as a sealing ring. The present embodiment does not make redundant description here.

[0032] In addition, the present embodiment further comprises an electronic valve between the primary filter 100 and the tertiary filter 300. A pressure sensor is arranged on the mounting end cover of the secondary filter screen 4 in the tertiary filter 300, and the pressure sensor and the electronic valve are signal connected with the system control device. The system control device can be a host computer device or other device capable of receiving and sending control information. The present embodiment does not make specific limitation here. The pressure sensor is used to detect the amount of impurities filtered in the filter. When the preset amount is reached, the system control device sends warning or prompt information to the operator to open the blowdown valve 10 to discharge the impurities. In addition, the electronic valve is a necessary control device in the system to realize the filtering dynamics of the automatic control system. The present embodiment does not make specific limitation on the installation position and control logic of the electronic valve, which is specifically set in actual use.

[0033] In some embodiments, the filter system disclosed in the present application further comprises an electric heater connected with the primary filter screen 2. The electric heater heats the primary filter screen 2, so that the attachments on the primary filter screen 2 are melted by heat, which are convenient to be removed by the stainless steel brush 5, so as to improve the cleaning quality.

[0034] In some other embodiments, a condenser is further included, which is connected with the oil outlet of the secondary filter 200. The condenser is used to reduce the temperature of the oil filtered by the three filters, so as to control the temperature of the oil and facilitate the direct use of the oil in other systems, thereby improving the convenience of the connection between the present system and other systems.

[0035] It can also be implemented that the connection structure between the base 7 and the filter core 3 is set as a three-jaw chuck structure, so as to be compatible with different sizes of filter cores 3 by adjusting the position of the three clamping jaws.

[0036] In addition, the system can clean the internal impurities in stages, for example, first close the control valve between the third filter 300 and the second filter 200, and then open the control valve between the third filter 300 and the second filter 200 after the first filter 100 and the third filter 300 complete the filtration, so that the oil enters the second filter 200 for fine filtration.

[0037] Further, the backflow pump and the oil quality detection device can be provided, and when the detection value does not meet the filtration condition after the third filter 300, the backflow pump is controlled to draw the oil back to the first filter 100 for re-filtration, so as to improve the filtration quality.

[0038] In addition, the filter core 3 in the second filter 200 is made of 316L stainless steel filter material, and a nickel-titanium alloy wear-resistant layer is arranged on the surface of the filter screen to increase the mechanical impact resistance of the filter core 3.

[0039] Finally, the utility model provides a kind of filter maintenance system, including series connection first filter 100, third filter 300, second filter 200, and the oil pipe 1 of cross connection between third filter 300 and first filter 100, second filter 200, first filter 100 is equipped with first filter screen 2 and first cleaning component, second filter 200 is equipped with filter core 3 and second cleaning component, and third filter 300 is equipped with second filter screen 4;First cleaning component includes stainless steel brush 5, and the root of stainless steel brush 5 is embedded with elastic member, and stainless steel brush 5 is detachably connected with center shaft 6, first drive is drivingly connected with center shaft 6, and stainless steel brush 5 is mechanically rubbed on the surface of first filter screen 2;Second cleaning component includes: base 7, shaft 8, nitrogen pump, filter core 3 is used to be connected with base 7, shaft 8 passes through filter core 3 and is connected with base 7, and shaft 8 includes a plurality of spray heads 81, and nitrogen pump is connected with spray head 81 by empty pipe in shaft 8.The utility model not only improves the cleaning and maintenance quality of low-temperature oil filter, but also improves the filtration efficiency and filtration quality of oil filter.

[0040] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A filter maintenance system, comprising a primary filter (100), a tertiary filter (300), and a secondary filter (200) arranged in series, wherein the tertiary filter (300) is cross-connected to an oil pipeline (1) between the primary filter (100) and the secondary filter (200), characterized in that, The primary filter (100) is provided with a primary filter screen (2) and a first cleaning component, the secondary filter (200) is provided with a filter element (3) and a second cleaning component, and the tertiary filter (300) is provided with a secondary filter screen (4). The diameter of the filter holes of the primary filter screen (2) is larger than that of the filter holes of the secondary filter screen (4). The first cleaning component includes a stainless steel brush, with an elastic element embedded at the root of the stainless steel brush (5). The stainless steel brush (5) is detachably connected to the central shaft (6). The first drive is driven connected to the central shaft (6). The stainless steel brush (5) is close to the surface of the primary filter screen (2) and rubs the surface of the primary filter screen (2) under the control of the rotating shaft. The second cleaning component includes: a base (7), a rotating shaft (8), and a nitrogen pump. The filter element (3) is used to connect to the base (7). The rotating shaft (8) passes through the filter element (3) and is connected to the base (7). The rotating shaft (8) includes a plurality of nozzles (81). The nitrogen pump is connected to the nozzles (81) through a hollow tube inside the rotating shaft (8).

2. The filter maintenance system according to claim 1, characterized in that, It also includes an electric heater, which is connected to the primary filter (2).

3. The filter maintenance system according to claim 1, characterized in that, The second cleaning component also includes a second drive (9), which is connected to the base (7) to control the rotation of the filter element (3).

4. The filter maintenance system according to claim 1, characterized in that, The first cleaning component and the second cleaning component also include a drain valve (10), which is connected to the slag discharge port of the primary filter (100) and the secondary filter (200), respectively.

5. A filter maintenance system according to claim 4, characterized in that, Both the primary filter (100) and the secondary filter (200) include a cylindrical body (11) and an upper sealing seat (12) and a lower sealing seat (13) connected to the cylindrical body (11). The upper sealing seat (12) and the lower sealing seat (13) are connected to the cylindrical body (11) by clamps.

6. A filter maintenance system according to claim 5, characterized in that, It also includes a condenser, which is connected to the oil outlet of the secondary filter (200).

7. A filter maintenance system according to claim 1, characterized in that, An electronic valve is also included between the primary filter (100) and the tertiary filter (300); a pressure sensor is provided on the mounting end cap of the secondary filter (4) inside the tertiary filter (300), and the pressure sensor, the electronic valve and the system control equipment are connected by signal.

8. A filter maintenance system according to claim 1, characterized in that, It also includes a reflux pump, which is located between the outlet of the tertiary filter (300) and the inlet of the primary filter (100).

Images