CN214837539U

CN214837539U - Oil return filter

Info

Publication number: CN214837539U
Application number: CN202121569256.6U
Authority: CN
Inventors: 谢峰; 张小龙; 范忠雨
Original assignee: Haifutaike Hydraulic Technology Shanghai Co ltd
Current assignee: Haifutaike Hydraulic Technology Shanghai Co ltd
Priority date: 2021-07-10
Filing date: 2021-07-10
Publication date: 2021-11-23
Anticipated expiration: 2031-07-10

Abstract

The utility model relates to an oil return filter, it includes barrel and sealed lid, the sealed opening of connecting on the barrel and sheltering from the barrel of covering, be equipped with the oil inlet on the sealed lid, be equipped with the cartridge filter in the barrel, the one end opening setting of cartridge filter, cartridge filter and oil inlet intercommunication, the cartridge filter is including filtering the outer net, filter intranet and filter material and bottom plate, it all is the annular setting on the bottom plate to filter the outer net and filter the intranet, it is inboard that the filtration intranet is located the filtration outer net, it has the filter material to filter the outer net and filter to fill between the intranet, there is the clearance between cartridge filter and the barrel, be equipped with the magnetism subassembly that is used for adsorbing the iron powder in the hydraulic oil in the cartridge filter. This application has the advantage that improves the filter effect.

Description

Oil return filter

Technical Field

The utility model belongs to the technical field of the hydraulic filter and specifically relates to an oil return filter is related to.

Background

The oil return filter is mainly installed on an oil return pipeline of the hydraulic system, and various dirt such as abrasive particles and the like generated by various hydraulic elements in the working process can be intercepted by arranging the oil filter of the oil return pipeline, so that the abrasive particles are prevented from returning to an oil tank again and being sucked by the hydraulic pump again.

Chinese patent publication No. CN202431652U discloses an oil return filter with automatic oil compensation, which comprises a filter head installed on a hydraulic oil tank interface, the filter head is provided with an oil suction port and an oil return port, the oil suction port is connected with a pump suction port of a hydraulic system, the oil return port is connected with a system oil return pipe, a filter cover is installed at the upper end of the filter head, a filter cartridge is installed at the lower end of the filter head, a filter element is installed inside the filter cartridge, the oil suction port is communicated with the inner space of the filter element, the oil return port is communicated with a gap between the outer side wall of the filter element and the inner wall of the filter cartridge, a valve group component is installed below the filter element, the valve group component comprises a bypass valve, an oil compensation valve and a back pressure valve, the back pressure valve is installed at the lower end of the filter element, the oil compensation valve is installed in the middle of the back pressure valve, and the bypass valve is arranged beside the bypass valve.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: a large amount of iron powder exists in the hydraulic oil flowing through the hydraulic system, the iron powder with small particles can pass through the filter element and can not be filtered, and the iron powder flows back to the hydraulic system again, so that the filtering effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the filter effect, this application provides an oil return filter.

The application provides an oil return filter adopts following technical scheme:

the utility model provides an oil return filter, includes barrel and sealed lid, and sealed lid is connected on the barrel and is sheltered from the opening of barrel, and sealed covering is equipped with the oil inlet, be equipped with the cartridge filter in the barrel, the one end opening setting of cartridge filter, cartridge filter and oil inlet intercommunication, the cartridge filter is including filtering the outer net, filtering intranet and filter material and bottom plate, it all is the annular setting on the bottom plate to filter the outer net and filter the intranet, it is inboard that the filtration intranet is located the filtration outer net, it has the filter material to filter the outer net and filter to fill between the intranet, there is the clearance between cartridge filter and the barrel, be equipped with the magnetism subassembly that is used for adsorbing the iron powder in the hydraulic oil in the cartridge filter.

Through adopting above-mentioned technical scheme, during the use, the operator discharges hydraulic oil into the cartridge filter from the oil inlet in, and the magnetism subassembly of cartridge filter can adsorb the iron powder in the hydraulic oil, and simultaneously, the cartridge filter can filter other impurity in the hydraulic oil, later discharges and has the clearance between cartridge filter and the barrel, and the barrel of discharging at last is combined, and this application can improve the filter effect.

Optionally, the subassembly is inhaled to magnetism includes connecting rod, connecting plate and multiunit magnet ring, the one end and the sealed lid of connecting rod are connected, and the cartridge filter is run through to the other end, the both ends of connecting rod all set up the connecting plate, the multiunit the magnet ring uses the axis of connecting rod to be the annular setting as vertical central line, the multiunit the magnet ring is connected between two connecting plates.

Through adopting above-mentioned technical scheme, during the use, after the hydraulic oil that contains the iron powder got into the cartridge filter, the iron powder in the hydraulic oil was adsorbed by the multiunit magnet ring, and then has played the effect of filtering the iron powder in the hydraulic oil, is the multiunit magnet ring that the annular set up, has increased the area of contact of magnet ring with hydraulic oil, has improved the filter effect.

Optionally, every group the magnet ring includes a plurality of magnet pieces, and is a plurality of the magnet piece is the annular setting, two can dismantle between the connecting plate and be connected with a plurality ofly and the multiunit magnet ring one-to-one sets up the dead lever, each group a plurality of magnet piece cover in the magnet ring are established on the dead lever.

Through adopting above-mentioned technical scheme, the magnet ring is connected with dismantling of connecting plate, makes things convenient for the operator to change convenient operation to the magnet piece of demagnetization.

Optionally, a separating ring is arranged between adjacent magnet pieces, and the separating ring is in sliding fit with the fixing rod.

Through adopting above-mentioned technical scheme, during the use, the setting of spacer ring is that there is the clearance between two adjacent magnet pieces, can make on the even distribution magnet ring of iron powder in the hydraulic oil.

Optionally, one end of the connecting rod penetrating through the bottom plate is provided with a bearing plate, the bearing plate is provided with a resisting spring, the resisting spring is sleeved outside the connecting rod, and one end of the resisting spring is tightly contacted with the bottom plate.

Through adopting above-mentioned technical scheme, during the use, the operator runs through the bottom plate with the one end of connecting rod and is connected in the bearing plate, makes to support tight spring conflict bottom plate, later with sealed lid push down and be connected in the barrel, make to support in the tight spring cooperation sealed lid with the stable connecting cylinder of cartridge filter.

Optionally, a clamping shell is arranged on the bearing plate, one end of the abutting spring is connected in the clamping shell and is in contact with the inner side wall of the clamping shell, and the clamping shell is detachably connected with the bearing plate.

Through adopting above-mentioned technical scheme, during the use, support tight spring and receive the spacing of chucking shell at flexible in-process, reduced and supported the crooked possibility of tight spring, chucking shell is connected with dismantling of bearing plate simultaneously, makes things convenient for the operator to change supporting tight spring, convenient operation.

Optionally, the bearing plate is detachably connected with the connecting rod.

Through adopting above-mentioned technical scheme, the bearing plate is connected with dismantling of connecting rod not only makes things convenient for the operator to change and supports tight spring, makes things convenient for the operator to change the bearing plate simultaneously.

Optionally, the material of chucking shell is iron, the top surface of bearing plate inlays and is equipped with adsorption magnet, adsorption magnet adsorbs the chucking shell.

Through adopting above-mentioned technical scheme, during the use, the operator takes off chucking shell and adsorption magnet split, changes convenient operation to the tight spring that supports of damage.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the magnetic suction component, when the filter cartridge is used, when hydraulic oil with iron powder enters the filter cartridge from the oil inlet, the hydraulic oil passes through the magnetic suction component, the magnetic suction component sucks the iron powder in the hydraulic oil out, and then the hydraulic oil is filtered, so that the filtering effect can be improved;

2. this application is provided with the spacer ring between two adjacent magnet pieces through setting up the spacer ring, and the spacer ring makes and leaves the clearance between two adjacent magnet pieces, can make the iron powder in the hydraulic oil by even absorption on the magnet ring.

Drawings

Fig. 1 is a cross-sectional view of an oil return filter embodying an embodiment of the present application.

Fig. 2 is an enlargement of portion a of fig. 1.

Fig. 3 is an enlargement of portion B of fig. 1.

Fig. 4 is an enlargement of portion C of fig. 1.

Description of reference numerals:

1. a barrel; 2. a sealing cover; 3. an oil inlet; 4. a filter cartridge; 5. filtering the outer net; 6. filtering the inner net; 7. filtering the material; 8. a base plate; 9. a connecting rod; 91. a first connecting rod; 92. a second connecting rod; 10. a connecting plate; 11. a magnet ring; 12. a propping block; 13. a limiting ring; 14. a magnet piece; 15. fixing the rod; 16. a spacer ring; 17. a bearing plate; 18. adsorbing a magnet; 19. clamping the shell; 20. the spring is pressed tightly.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses oil return filter. Referring to fig. 1, an oil return filter includes a cylinder 1 and a sealing cover 2. The sealing cover 2 is inserted into the barrel body 1 and covers the opening of the barrel body 1, the sealing cover 2 is connected with the barrel body 1 through a screw, and the sealing cover 2 is provided with an oil inlet 3.

Referring to fig. 1 and 2, can dismantle in the barrel 1 and be connected with cartridge filter 4, the one end opening setting of cartridge filter 4, cartridge filter 4 and oil inlet 3 intercommunication, cartridge filter 4 is including filtering outer net 5, filtering intranet 6, filter material 7 and bottom plate 8. Filter outer net 5 and filter intranet 6 and all be annular fixed connection on bottom plate 8, filter intranet 6 and be located and filter outer net 5 inboardly. Filter outer screen 5 and filter and have filter material 7 between the 6 fillings of intranet, the top surface laminating of cartridge filter 4 is in sealed lid 2, has the clearance between cartridge filter 4 and the barrel 1, and the material of bottom plate 8 is the elasticity iron sheet.

Referring to fig. 1 and 3, a magnetic attraction assembly for attracting iron powder in hydraulic oil is disposed in the filter cartridge 4. The magnetic attraction component comprises a connecting rod 9, a connecting plate 10 and a plurality of groups of magnet rings 11. One end of the connecting rod 9 penetrates through the sealing cover 2 and is in threaded connection with the sealing cover 2, and the other end penetrates through the bottom plate 8. The both ends of connecting rod 9 are equal sliding connection connecting plate 10, and two connecting plates 10 are the interval setting from top to bottom. Connecting rod 9 includes head rod 91 and second connecting rod 92, and the both ends of head rod 91 are provided with the external screw thread, and the one end of second connecting rod 92 is provided with the external screw thread, and second connecting rod 92 does not set up the one end and head rod 91 fixed connection of external screw thread to second connecting rod 92 runs through connecting plate 10 for the one end that sets up the external screw thread.

Referring to fig. 1 and 3, one end of a first connecting rod 91 is in threaded connection with the sealing cover 2, the other end of the first connecting rod penetrates through the two connecting plates 10, a supporting block 12 is connected between the sealing cover 2 and the connecting plate 10 far away from the bottom of the cylinder 1 in a sliding manner, and the first connecting rod 91 penetrates through the supporting block 12. One end of the first connecting rod 91, which is far away from the sealing cover 2, is in threaded connection with a limiting ring 13, and the limiting ring 13 abuts against the connecting plate 10 close to the bottom of the cylinder 1. The axis that multiunit magnet ring 11 used connecting rod 9 is the annular setting for vertical central line, and multiunit magnet ring 11 passes through the screw connection between two connecting plates 10, and multiunit magnet ring 11 that is the annular setting has increased the area of contact of magnet ring 11 with hydraulic oil, has further improved the filter effect.

Referring to fig. 1, each magnet ring 11 includes a plurality of magnet pieces 14, each magnet piece 14 is disposed in a ring shape, and the magnet rings 11 of the same group are disposed along the length direction of the first connecting rod 91. Can dismantle between two connecting plates 10 and be connected with a plurality of dead levers 15 that set up with multiunit magnet ring 11 one-to-one, a plurality of magnet pieces 14 in each magnet ring 11 of group all overlap and establish on dead lever 15, and the both ends of dead lever 15 are passed through the screw connection and are being corresponded connecting plate 10. After the magnet ring 11 is demagnetized, an operator can detach the magnet ring 11 from between the two connecting plates 10 and replace the demagnetized magnet pieces 14, which is convenient to operate.

Referring to fig. 1, a separating ring 16 is disposed between adjacent magnet pieces 14, the separating ring 16 is made of plastic, the separating ring 16 is in sliding fit with the fixing rod 15, and the separating ring 16 is disposed such that a gap exists between two adjacent magnet pieces 14, so that iron powder in hydraulic oil can be uniformly distributed on the magnet ring 11.

Referring to fig. 1 and 4, the end of the second connecting rod 92 provided with the external thread is connected with the bearing plate 17 through the thread, so that the bearing plate 17 is detachably connected with the connecting rod 9, and the second connecting rod is convenient for an operator to install. The top surface of bearing plate 17 inlays and is equipped with adsorption magnet 18, is provided with chucking shell 19 on the bearing plate 17, and the material of chucking shell 19 is iron, and adsorption magnet 18 adsorbs chucking shell 19. The inside of the clamping shell 19 is fixedly connected with a resisting spring 20, one end of the resisting spring 20 is fixedly connected to the bottom of the clamping shell 19 and contacts with the inner side wall of the clamping shell 19, the resisting spring 20 is sleeved outside the second connecting rod 92, and one end of the resisting spring 20 is contacted with the bottom plate 8.

The implementation principle of the oil return filter in the embodiment of the application is as follows: during the use, the operator discharges hydraulic oil from oil inlet 3 into cartridge filter 4 in, and the magnetic absorption subassembly in the cartridge filter 4 adsorbs the iron powder in the hydraulic oil, when the hydraulic oil after the magnetic absorption subassembly flows out from cartridge filter 4, through filtering intranet 6, filter material 7 and filtration outer net 5 in proper order, and impurity in the hydraulic oil is filtered, consequently, this application can improve the filter effect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an oil return filter, includes barrel (1) and sealed lid (2), and sealed lid (2) are connected on barrel (1) and are sheltered from the opening of barrel (1), are equipped with oil inlet (3) on sealed lid (2), its characterized in that: be equipped with cartridge filter (4) in barrel (1), the one end opening of cartridge filter (4) sets up, cartridge filter (4) and oil inlet (3) intercommunication, cartridge filter (4) are including filtering outer net (5), filtering intranet (6) and filter material (7) and bottom plate (8), it all is the annular setting on bottom plate (8) to filter outer net (5) and filter intranet (6), it is inboard that filtering intranet (6) are located filtering outer net (5), it has filter material (7) to filter outer net (5) and to filter between intranet (6) packing, there is the clearance between cartridge filter (4) and barrel (1), be equipped with the magnetism subassembly that is arranged in adsorbing the iron powder in the hydraulic oil in cartridge filter (4).

2. The oil return filter of claim 1, wherein: the subassembly is inhaled to magnetism includes connecting rod (9), connecting plate (10) and multiunit magnet ring (11), the one end and the sealed lid (2) of connecting rod (9) are connected, and the other end runs through cartridge filter (4), the both ends of connecting rod (9) all set up connecting plate (10), multiunit magnet ring (11) are the annular setting for vertical central line with the axis of connecting rod (9), the multiunit magnet ring (11) are connected between two connecting plates (10).

3. The oil return filter of claim 2, wherein: every group magnet ring (11) are including a plurality of magnet pieces (14), and are a plurality of magnet piece (14) are the annular setting, two can dismantle between connecting plate (10) and be connected with a plurality of dead lever (15) that set up with multiunit magnet ring (11) one-to-one, each group a plurality of magnet pieces (14) in magnet ring (11) are established on dead lever (15).

4. A return oil filter according to claim 3, characterized in that: and a separating ring (16) is arranged between the adjacent magnet sheets (14), and the separating ring (16) is in sliding fit with the fixing rod (15).

5. The oil return filter of claim 2, wherein: one end, penetrating through the bottom plate (8), of the connecting rod (9) is provided with a bearing plate (17), the bearing plate (17) is provided with a propping spring (20), the propping spring (20) is sleeved outside the connecting rod (9), and one end of the propping spring (20) is propped against the bottom plate (8).

6. The oil return filter of claim 5, wherein: be equipped with chucking shell (19) on bearing plate (17), the one end of propping tight spring (20) is connected in chucking shell (19) and with the inside wall contact of chucking shell (19), chucking shell (19) can be dismantled with bearing plate (17) and be connected.

7. The oil return filter of claim 6, wherein: the bearing plate (17) is detachably connected with the connecting rod (9).

8. The oil return filter of claim 6, wherein: the material of chucking shell (19) is iron, adsorption magnet (18) are inlayed to the top surface of bearing plate (17), adsorption magnet (18) adsorb chucking shell (19).