CN212429413U

CN212429413U - Double-cylinder oil return pipeline filter

Info

Publication number: CN212429413U
Application number: CN202020645214.5U
Authority: CN
Inventors: 项有云
Original assignee: Wenzou Kanghua Hydraulic Co ltd
Current assignee: Wenzou Kanghua Hydraulic Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-29
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a double-cylinder oil return pipeline filter, which relates to the technical field of filters and comprises a first filter cylinder and a second filter cylinder which are symmetrically arranged, wherein a control room is arranged between the first filter cylinder and the second filter cylinder, and the two sides of the control room are communicated with the first filter cylinder, the second filter cylinder and the control room through pipelines to form an oil circulation loop; a first sleeve and a second sleeve are arranged in the pipeline in a sliding mode; the first sleeve and the second sleeve are respectively positioned on two sides of the control chamber; a cover plate positioned in the control chamber is arranged on the side wall of the first sleeve opposite to the second sleeve, and oil return holes are formed in the first sleeve and the second sleeve; a sealing ring is sleeved between the cover plate and the oil return hole; a valve rod is rotatably arranged at the center of the control chamber, and an eccentric wheel positioned between the two cover plates is arranged on the valve rod; a connecting rod is arranged between the first sleeve and the second sleeve; the utility model discloses have the light operation, the effect reliable, that the leakproofness is good of switching-over.

Description

Double-cylinder oil return pipeline filter

Technical Field

The utility model belongs to the technical field of the technique of filter and specifically relates to a binocular returns oil pipe way filter is related to.

Background

The filter is an indispensable device on a medium conveying pipeline, is usually installed at the inlet end of a pressure reducing valve, a pressure relief valve, a constant water level valve and other equipment, and is mainly used for cleaning and filtering impurities in a conveying medium. A double-cylinder return line filter is often used in hydraulic systems of heavy machinery, mining machinery and the like. The double-cylinder oil return pipeline filter consists of two single-cylinder filters and a two-position six-way reversing valve, and is simple in structure and convenient to use.

Chinese patent with publication number CN203906453U discloses a double-cylinder oil return pipeline filter in the prior art, the filter comprises a filter, a reversing valve and an oil port, the filter comprises a filter I and a filter II, the oil port comprises an oil inlet and an oil outlet, the filter I and the filter II are connected by a pipeline, the reversing valve is arranged in the middle of the pipeline, two ends of the reversing valve are respectively provided with a flange plate reversing valve, the lower end of the reversing valve is provided with an oil inlet and an oil outlet, the outer end of the oil inlet is provided with an oil inlet reversing valve, the outer end of the oil outlet is provided with an oil outlet reversing valve, the oil inlet is provided with a bypass valve, filter elements are respectively arranged in the filter I and the filter II, the filter elements are. The filter element pollution blockage signal transmitter is arranged to timely feed back the blockage condition of the filter element, so that the filter can be replaced and cleaned in time, the working efficiency is guaranteed, and the service time of the filter is prolonged.

The above prior art solutions have the following drawbacks: one type of the common reversing valve positioned in the middle of the pipeline is a three-way ball valve, and when the filter I and the filter II need to be communicated or closed through the pipeline, the valve rod is rotated to control the rotation of a valve core in the ball valve, so that the opening and closing of the two filters I and II are realized; when the valve rod rotates, the contact area between the outer side wall of the valve core and the inner side wall of the pipeline is large, so that the resistance of the valve rod during rotation is large, and the valve rod is difficult to rotate; and the valve core is easy to abrade with the inner side wall of the pipeline when rotating, once the valve core is abraded, the sealing performance of the valve core is affected, and the service life of the valve core is reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a binocular returns oil pipe way filter, has the light operation, and the switching-over is reliable, the good effect of leakproofness.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a double-cylinder oil return pipeline filter comprises a first filter cylinder and a second filter cylinder which are symmetrically arranged, a control chamber is arranged between the first filter cylinder and the second filter cylinder, and the first filter cylinder, the second filter cylinder and the control chamber are mutually communicated through pipelines at two sides of the control chamber to form an oil circulation loop; a first sleeve and a second sleeve are horizontally arranged in the pipeline in a sliding manner; the first sleeve and the second sleeve are respectively positioned on two sides of the control chamber and are arranged oppositely; a cover plate positioned in the control chamber is arranged on the side wall of the first sleeve opposite to the second sleeve, and oil return holes close to one side of the cover plate are formed in the first sleeve and the second sleeve; a sealing ring along the axial direction is sleeved between the cover plate and the oil return hole; a vertical valve rod is rotatably arranged at the center of the control chamber, and an eccentric wheel positioned between the two cover plates is arranged on the valve rod; a connecting rod is arranged between the first sleeve and the second sleeve, and the length of the connecting rod is larger than the maximum diameter of the eccentric wheel.

By adopting the technical scheme, when the valve rod is rotated, the valve rod drives the eccentric wheel below to synchronously rotate; when the convex surface of the eccentric wheel rotates towards the direction approaching the first sleeve, the eccentric wheel pushes the cover plate on the first sleeve to enable the first sleeve to be pressed into the pipeline on the same side gradually; the connecting rod drives the second sleeve to be gradually pulled out from the pipeline on the other side, so that the oil return hole is gradually moved out into the control chamber; when the first sleeve is completely pushed into the pipeline on the same side, the cover plate positioned on the first sleeve can cover and tightly press the opening of the pipeline under the action of the eccentric wheel; therefore, the purposes of closing the oil passing loop of the first filter cylinder and opening the oil passing loop of the second filter cylinder are achieved; at the moment, the sealing ring on the first sleeve is tightly abutted against the inner side wall of the pipeline, so that the sealing property of the closed pipeline can be further improved, and the oil leakage condition is avoided; in a similar way, the valve rod is rotated reversely, so that the purposes of opening the oil passing loop of the first filter cartridge and closing the oil passing loop of the second filter cartridge can be achieved; the cover plate is pushed by the convex surface on one side of the eccentric wheel, compared with the traditional ball valve control, the eccentric wheel reduces the contact area between the eccentric wheel and the cover plate during rotation, and the resistance on the corresponding eccentric wheel during rotation is reduced; therefore, the valve rod can more conveniently drive the eccentric wheel to rotate, and the reversing is more reliable; meanwhile, when the oil supply loop is opened or closed, the first sleeve and the second sleeve have relatively small abrasion to the opening of the pipeline, so that the service life of the whole oil supply loop can be prolonged.

The present invention may be further configured in a preferred embodiment as: the pipeline penetrates into the control chamber towards one end of the control chamber, and the diameter of the cover plate is larger than that of the pipeline.

By adopting the technical scheme, the size of the eccentric wheel required can be further reduced by the pipeline with one end extending into the control chamber, and the smaller type of the eccentric wheel can ensure that the valve rod can rotate the eccentric wheel more smoothly; when the opening of the pipeline is covered by the cover plate under the action of the eccentric wheel, the pipeline with one side extending into the control chamber can reduce the extrusion abrasion of the cover plate on the inner side wall of the control chamber; because the diameter of the cover plate is larger than that of the pipeline, the cover plate can cover the opening of the pipeline more stably.

The present invention may be further configured in a preferred embodiment as: the connecting rod is the symmetry and sets up the both sides at the valve rod, just the connecting rod is placed along the major axis direction of pipeline.

Through adopting above-mentioned technical scheme, be located the connecting rod of valve rod both sides respectively and more stable when making first sleeve and second sleeve linkage, avoid first sleeve and second sleeve the uneven condition of atress to appear when the linkage for first sleeve and second sleeve keep steadily when removing.

The present invention may be further configured in a preferred embodiment as: the number of the oil return holes is at least two, and the oil return holes are circumferentially distributed around the horizontal central axis of the pipeline.

Through adopting above-mentioned technical scheme, during operation shifts out to when forming the passageway with the control room when the oil gallery follows the pipeline in, compares in single oil gallery, and the speed of fuel feeding can further be improved through a plurality of oil galleries that are circumference and encircle the distribution, makes fuel feeding feedback rapider.

The present invention may be further configured in a preferred embodiment as: the inner wall of the pipeline is provided with sliding chutes distributed along the length direction of the pipeline, and the outer side walls of the ends, far away from the control room, of the first sleeve and the second sleeve are respectively provided with a convex block; the lug is inserted into the sliding groove and slides along the opening direction of the sliding groove.

By adopting the technical scheme, when the first sleeve and the first sleeve are driven by the eccentric wheel to translate, the first sleeve and the first sleeve can be prevented from deflecting during translation through the matching of the convex block and the sliding groove, and the first sleeve are limited; so that the first sleeve and the first sleeve can keep self-stability during translation.

The present invention may be further configured in a preferred embodiment as: the top of the control chamber is detachably provided with a sealing plate, and the valve rod penetrates out of the top of the sealing plate; and a sealing rubber ring is arranged between the top of the control chamber and the sealing plate.

By adopting the technical scheme, after the sealing plate is detached from the top of the control room, the maintenance of devices in the control room can be facilitated for workers; and the sealing performance of the joint of the top of the control chamber and the sealing plate can be enhanced through the sealing rubber ring, so that the oil leakage is avoided.

The present invention may be further configured in a preferred embodiment as: the outer wall of the pipeline is communicated with a pressure regulating channel, and two ends of the pressure regulating channel are respectively communicated with the pipelines on two sides of the control chamber to form a pressure stabilizing loop; and the pressure regulating channel is connected with a regulating valve.

By adopting the technical scheme, before the filter works, the regulating valve on the pressure regulating channel is opened, and the pipelines on the two sides of the control chamber are communicated with each other through the pressure regulating channel, so that the aim of regulating the pressure in the pipelines on the two sides to be in a balanced state is fulfilled; the condition that the air pressure in the pipelines at the two sides is unbalanced is avoided, and the safety in use is improved.

The present invention may be further configured in a preferred embodiment as: all be provided with the mounting bracket on the lateral wall of first cartridge filter and second cartridge filter, the mounting bracket is the symmetry and sets up the both sides at the control room.

Through adopting above-mentioned technical scheme, when installing the filter, pass through bolt fixed mounting on equipment with the mounting bracket on first cartridge filter and the second cartridge filter to enable first cartridge filter and the stable and firm fixing of second cartridge filter on equipment.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the cover plate is pushed by the convex surface on one side of the eccentric wheel, compared with the traditional ball valve control, the eccentric wheel reduces the contact area between the eccentric wheel and the cover plate during rotation, and the resistance on the corresponding eccentric wheel during rotation is reduced; the valve rod can more conveniently drive the eccentric wheel to rotate, so that the reversing is more reliable; meanwhile, when the first sleeve and the second sleeve open or close the oil supply loop, the abrasion of the opening of the pipeline is relatively small, so that the service life of the whole oil supply loop can be prolonged;

2. the opening that the apron can be with the pipeline under the effect of eccentric wheel is covered and is closed to tight, and the sealing washer that is located on first sleeve and the second sleeve can support tightly each other with the inside wall of closed pipeline to can further improve the leakproofness of closed pipeline, avoid taking place the condition of oil leak.

Drawings

Fig. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is a schematic view showing a partial structure of the first sleeve and the second sleeve;

FIG. 3 is a schematic view showing the structure of the control chamber after the sealing plate is hidden;

FIG. 4 is a schematic view of the overall structure highlighting the back side of FIG. 1;

fig. 5 is a schematic sectional view showing a partial structure of the sliding groove in the pipeline according to the present invention.

Reference numerals: 1. a first filter cartridge; 2. a second filter cartridge; 3. a control room; 31. a valve stem; 311. an eccentric wheel; 312. an operating lever; 32. a sealing plate; 33. sealing the rubber ring; 4. a pipeline; 41. a first sleeve; 42. a second sleeve; 43. a connecting rod; 44. a chute; 45. a voltage regulating channel; 451. adjusting a valve; 5. a cover plate; 6. a seal ring; 7. an oil return hole; 8. a bump; 9. and (7) mounting frames.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, for the utility model discloses a binocular oil return line filter, including two first cartridge filters 1 and the second cartridge filter 2 that are the vertical placing of symmetry. Install vertical control chamber 3 between first cartridge filter 1 and the second cartridge filter 2, the welding has two sets of horizontal pipeline 4 that are upper and lower symmetric distribution on the lateral wall of control chamber 3. The pipeline 4 is communicated with the first filter cartridge 1, the second filter cartridge 2 and the control chamber 3 to form an oil passing loop. A first sleeve 41 and a second sleeve 42 are slidably disposed in the pipe 4 in the horizontal direction.

As shown in fig. 1 and 2, each of the pipes 4 is composed of two independent channels, and the channels are symmetrically arranged on two sides of the control chamber 3. One end of the channel facing the control chamber 3 is inserted into the control chamber 3 from the outer side wall of the control chamber 3, and the first sleeve 41 and the second sleeve 42 are oppositely arranged and symmetrically installed in the channel at two sides of the control chamber 3. The opposite ends of the first sleeve 41 and the second sleeve 42 are fixedly provided with coaxial circular cover plates 5, the two cover plates 5 are positioned in the control chamber 3, and the diameter of the cover plates 5 is larger than that of the channel. The ends of the first sleeve 41 and the second sleeve 42, which are close to each other, are formed with four oil return holes 7, and the four oil return holes 7 are circumferentially distributed around the horizontal central axis of the passage. The oil return hole 7 is positioned at one side of the two cover plates 5 which are deviated from each other, and a sealing ring 6 along the axial direction is fixedly sleeved between the cover plates 5 and the oil return hole 7.

As shown in fig. 3 and 4, a rectangular sealing plate 32 is detachably mounted on the top of the control chamber 3 through bolts, a circular opening is formed in the top of the control chamber 3, and a circular sealing rubber ring 33 is embedded in the edge of the opening. The sealing rubber ring 33 is pressed on the top of the control chamber 3 by the sealing plate 32.

As shown in fig. 1 and 2, a vertical valve rod 31 is rotatably mounted at the center of the control chamber 3 through a sealing plate 32, the top of the valve rod 31 penetrates out from the upper end surface of the sealing plate 32, and a horizontal operating rod 312 is fixedly mounted on the penetrated valve rod 31. Two eccentric wheels 311 which are arranged up and down symmetrically are fixedly installed on the valve rod 31, and the two eccentric wheels 311 are respectively positioned between the first sleeve 41 and the second sleeve 42 which are opposite. The eccentrics 311 rotate in the horizontal direction about the valve stem 31, and each set of eccentrics 311 is located between two opposite cover plates 5.

As shown in fig. 1 and 2, two horizontal connecting rods 43 are fixedly mounted between the two opposite cover plates 5 through bolts, and the connecting rods 43 are placed along the long axis direction of the pipeline 4. The connecting rod 43 is located above the eccentric wheel 311, and the connecting rod 43 is symmetrically installed on two sides of the valve rod 31. Meanwhile, the length of the connecting rod 43 is greater than the maximum diameter of the eccentric wheel 311, thereby ensuring that the eccentric wheel 311 can smoothly rotate between the two cover plates 5. When the central axis of the convex surface of the eccentric wheel 311 is rotated to overlap the central axis of the pipe 4, the convex surface of the eccentric wheel 311 pushes the cover plate 5 on one side to press the opening of the channel on the same side, and meanwhile, the connecting rod 43 drives the oil return hole 7 in the channel on the other side to move out to the control chamber 3 to form a loop.

As shown in fig. 2 and 5, the inner wall of the duct 4 is provided with two sliding grooves 44 distributed along the length direction thereof, and the two sliding grooves 44 are respectively symmetrically arranged on two sides of the control room 3. The outer side walls of the ends of the first sleeve 41 and the second sleeve 42, which are far away from the control chamber 3, are fixedly provided with the convex blocks 8, and the convex blocks 8 are inserted into the respective sliding grooves 44 and slide along the opening direction of the sliding grooves 44.

As shown in fig. 4, a horizontal pressure-regulating channel 45 is communicated with the outer side wall of the pipeline 4 above the control chamber 3, and two ends of the pressure-regulating channel 45 are respectively communicated with the channels at two sides of the control chamber 3 to form a pressure-stabilizing loop. The middle part of the pressure regulating channel 45 is fixedly provided with a regulating valve 451, and the pressure balance between the two sides of the pipeline 4 can be realized by controlling the regulating valve 451. All fixed welding has the transversal mounting bracket 9 of personally submitting the L type on the lateral wall of first cartridge filter 1 and second cartridge filter 2, and two mounting brackets 9 are the symmetry and set up the both sides at control room 3. Two waist-shaped holes which are respectively arranged up and down are symmetrically arranged on the mounting rack 9.

The implementation principle of the embodiment is as follows:

when the valve rod 31 is rotated, the valve rod 31 drives the lower eccentric wheel 311 to rotate synchronously. When the convex surface of the eccentric 311 gradually rotates toward the first sleeve 41, the eccentric 311 pushes the cover plate 5 on the first sleeve 41 to gradually press the first sleeve 41 into the pipe 4 on the same side. The connecting rod 43 will drive the second sleeve 42 to be gradually pulled out from the pipe 4 on the other side, so that the oil return hole 7 is gradually moved out to the control chamber 3. When the first sleeve 41 is pushed into the pipe 4 on the same side, the cover plate 5 on the first sleeve 41 can cover and tightly abut against the opening of the pipe 4 under the action of the eccentric wheel 311. Thereby reach the mesh that closes the logical oil return circuit of first cartridge filter 1, open the logical oil return circuit of second cartridge filter 2. The sealing ring 6 on the first sleeve 41 abuts against the inner side wall of the pipeline 4, so that the sealing performance of the closed pipeline 4 can be further improved, and oil leakage is avoided. The same reason is through carrying out antiport with valve rod 31 to can realize opening the logical oil return circuit of first cartridge filter 1, close the mesh that second cartridge filter 2 leads to oil return circuit. The cover plate 5 is pushed by the convex surface on one side of the eccentric 311, and compared with the traditional ball valve control, the contact area between the eccentric 311 and the cover plate 5 during rotation is reduced, and the resistance applied to the corresponding eccentric 311 during rotation is also reduced. Therefore, the valve rod 31 can more easily drive the eccentric wheel 311 to rotate, and the reversing is more reliable. Meanwhile, when the oil supply loop is opened or closed, the abrasion of the opening of the pipeline 4 is relatively small by the first sleeve 41 and the second sleeve 42, so that the service life of the whole oil supply loop can be prolonged.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A double-cylinder oil return pipeline filter comprises a first filter cylinder (1) and a second filter cylinder (2) which are symmetrically arranged, a control chamber (3) is arranged between the first filter cylinder (1) and the second filter cylinder (2), and the first filter cylinder (1), the second filter cylinder (2) and the control chamber (3) are communicated with each other through pipelines (4) at two sides of the control chamber (3) to form an oil circulation loop; the method is characterized in that: a first sleeve (41) and a second sleeve (42) are horizontally arranged in the pipeline (4) in a sliding manner; the first sleeve (41) and the second sleeve (42) are respectively positioned at two sides of the control chamber (3) and are oppositely arranged; a cover plate (5) positioned in the control chamber (3) is arranged on the opposite side wall of the first sleeve (41) and the second sleeve (42), and oil return holes (7) close to one side of the cover plate (5) are formed in the first sleeve (41) and the second sleeve (42); a sealing ring (6) along the axial direction is sleeved between the cover plate (5) and the oil return hole (7); a vertical valve rod (31) is rotatably arranged at the center of the control chamber (3), and an eccentric wheel (311) positioned between the two cover plates (5) is arranged on the valve rod (31); a connecting rod (43) is arranged between the first sleeve (41) and the second sleeve (42), and the length of the connecting rod (43) is larger than the maximum diameter of the eccentric wheel (311).

2. The dual cartridge return line filter of claim 1 wherein: the pipeline (4) penetrates into the control chamber (3) towards one end of the control chamber (3), and the diameter of the cover plate (5) is larger than that of the pipeline (4).

3. The dual cartridge return line filter of claim 2, wherein: the connecting rods (43) are symmetrically arranged on two sides of the valve rod (31), and the connecting rods (43) are placed along the long axis direction of the pipeline (4).

4. The dual cartridge return line filter of claim 1 wherein: the number of the oil return holes (7) is at least two, and the oil return holes (7) are circumferentially distributed around the horizontal central axis of the pipeline (4).

5. The dual cartridge return line filter of claim 1 wherein: sliding grooves (44) distributed along the length direction of the pipeline (4) are formed in the inner wall of the pipeline, and convex blocks (8) are arranged on the outer side walls of the first sleeve (41) and the second sleeve (42) which are far away from one end of the control chamber (3); the convex block (8) is inserted into the sliding groove (44) and slides along the opening direction of the sliding groove (44).

6. The dual cartridge return line filter of claim 1 wherein: a sealing plate (32) is detachably mounted at the top of the control chamber (3), and the valve rod (31) penetrates out of the top of the sealing plate (32); a sealing rubber ring (33) is arranged between the top of the control chamber (3) and the sealing plate (32).

7. The dual cartridge return line filter of claim 1 wherein: the outer wall of the pipeline (4) is communicated with a pressure regulating channel (45), and two ends of the pressure regulating channel (45) are respectively communicated with the pipelines (4) on two sides of the control chamber (3) to form a pressure stabilizing loop; the pressure regulating channel (45) is connected with a regulating valve (451).

8. The dual cartridge return line filter of claim 1 wherein: all be provided with mounting bracket (9) on the lateral wall of first cartridge filter (1) and second cartridge filter (2), mounting bracket (9) are the symmetry and set up the both sides in control room (3).