CN219623007U - Hydraulic oil return filtering device for excavator - Google Patents

Abstract

The utility model discloses a hydraulic oil return filtering device for an excavator, which comprises an outer barrel, wherein a second connecting block is fixedly connected to the middle position of the bottom of the outer barrel, an internal thread is arranged above the inner wall of the outer barrel, the top of the outer barrel penetrates through and is provided with a connecting groove, a barrel cover is arranged above the outer barrel, an oil inlet pipe penetrates through and is fixedly connected to the middle position of the outer wall of the left side of the barrel cover, a first connecting block is fixedly connected to the middle position of the bottom of the outer barrel, an external thread is arranged on the outer wall of the first connecting block, a filter cartridge is fixedly connected to the bottom of the first connecting block, and the outer wall of the filter cartridge penetrates through and is provided with uniformly distributed filter holes. According to the utility model, the pressure of the oil way of the hydraulic oil tank can be regulated through the pressure regulating valve, the condition that the device is damaged due to overlarge oil way pressure is avoided, and hydraulic oil can be filtered twice through the linkage among the filter cloth, the filter holes and the filter cylinder, so that the filtering effect is better.

Description

Hydraulic oil return filtering device for excavator

Technical Field

The utility model relates to the technical field of filtration, in particular to a hydraulic oil return filtering device for an excavator.

Background

During the working process of a hydraulic system of the engineering machinery, scrap iron can be generated due to abrasion of hydraulic elements; dust carried by the breather valve of the hydraulic tank in an open system, impurities carried in the assembly process. In order to eliminate the impurities, the excavator is provided with an oil return filter element in a hydraulic oil tank for filtering the impurities of a hydraulic system.

At present, an oil return filter element is arranged in a hydraulic oil tank of the excavator and is used for filtering impurities of a hydraulic system, and most of existing oil return filtering devices are complex in structure and inconvenient to assemble and disassemble; especially, the mounting modes of the filter elements are not uniform, so that the filter elements are complicated when the filter device is opened to replace the filter elements; and the existing filtering device has poor effect and low filtering precision. The ideal effect is not achieved, so the existing hydraulic oil return filtering device needs to be improved.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a hydraulic oil return filtering device for an excavator.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a hydraulic oil return oil filter equipment for excavator, includes the urceolus, fixedly connected with second connecting block on the bottom intermediate position of urceolus, the inner wall top of urceolus is provided with the internal thread, the top of urceolus is run through and is provided with the spread groove, the top of urceolus is provided with the cover, run through and fixedly connected with advance oil pipe on the left side outer wall intermediate position of cover, fixedly connected with first connecting block on the bottom intermediate position of urceolus, the outer wall of first connecting block is provided with the external screw thread, the bottom fixedly connected with of first connecting block strains, the outer wall of straining the section of thick bamboo runs through and is provided with evenly distributed's filtration pore, the bottom threaded connection of straining the section of thick bamboo has the oil shutoff piece, the top fixedly connected with filter cloth of oil shutoff piece, the outer wall front end of advance oil pipe runs through and is provided with the choke valve, run through and be provided with the air-vent valve on the outer wall intermediate position of urceolus, the top of air-vent valve runs through and is provided with the manometer, run through and threaded connection has the pressure regulating piece on one side outer wall intermediate position of air-vent valve.

As a further description of the above technical solution:

the second connecting block is in threaded connection with the connecting groove.

As a further description of the above technical solution:

the internal thread is in threaded connection with the external thread.

As a further description of the above technical solution:

the middle position of the top of the cylinder cover is fixedly connected with a handle.

As a further description of the above technical solution:

the filter cloth is positioned in the filter cylinder and clings to the inner wall of the filter cylinder.

As a further description of the above technical solution:

the outer wall of the outer cylinder penetrates through and is provided with oil outlet holes which are uniformly distributed.

The utility model has the following beneficial effects:

according to the utility model, the pressure of the oil way of the hydraulic oil tank can be regulated by arranging the pressure regulating valve, the condition that the device is damaged due to overlarge oil way pressure is avoided, impurities in hydraulic oil can be filtered twice through the linkage among the filter cloth, the filter holes and the filter cylinders, so that the filtering effect of the device is better, and the device is simple in structure, easy to assemble and disassemble and more convenient to replace the filter core through the linkage among the connecting grooves, the second connecting blocks, the oil blocking blocks, the first connecting blocks, the internal threads and the external threads.

Drawings

Fig. 1 is a perspective view of a hydraulic oil return filtering device for an excavator, which is provided by the utility model;

fig. 2 is a schematic diagram of a pressure regulating valve of a hydraulic oil return filtering device for an excavator according to the present utility model;

fig. 3 is an exploded view of a hydraulic oil return filtering device for an excavator according to the present utility model.

Legend description:

1. an outer cylinder; 2. a cylinder cover; 3. a handle; 4. a pressure gauge; 5. a pressure regulating valve; 6. an oil inlet pipe; 7. a throttle valve; 8. a pressure regulating block; 9. an oil outlet hole; 10. a first connection block; 11. a second connection block; 12. a connecting groove; 13. an internal thread; 14. oil blocking blocks; 15. filtering holes; 16. a filter cartridge; 17. a filter cloth; 18. and (5) external threads.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the hydraulic oil return filtering device for the excavator comprises an outer barrel 1, a second connecting block 11 is fixedly connected to the middle position of the bottom of the outer barrel 1, an inner thread 13 is arranged above the inner wall of the outer barrel 1, the top of the outer barrel 1 is penetrated and provided with a connecting groove 12, a barrel cover 2 is arranged above the outer barrel 1, an oil inlet pipe 6 is penetrated and fixedly connected to the middle position of the outer wall of the left side of the barrel cover 2, the oil inlet hole 6 is connected with the oil outlet of a hydraulic tank of the excavator, hydraulic oil enters the inside of a filter hole 15 through the oil inlet hole 6, a first connecting block 10 is fixedly connected to the middle position of the bottom of the outer barrel 1, an outer thread 18 is arranged on the outer wall of the first connecting block 10, a filter barrel 16 is fixedly connected to the bottom of the first connecting block 10, the outer wall of the filter barrel 16 penetrates and is provided with uniformly distributed filter holes 15, the bottom thread of the filter barrel 16 is connected with an oil blocking block 14, when the filter device needs to be cleaned, the cylinder cover 2 is rotated and taken out of the outer cylinder 1 by rotating the handle, the filter cylinder 16 is fixed on the first connecting block 10, the first connecting block 10 is fixed on the cylinder cover 2, the filter cylinder 16 is correspondingly taken out, the oil blocking block 14 and the filter cloth 17 are fixedly connected, the oil blocking block 14 and the filter cylinder 16 are in threaded connection, the filter cloth 17 can be taken out for cleaning by rotating the oil blocking block 14, the connecting grooves 12 and the second connecting blocks 11 which are in threaded connection are arranged at the top and the bottom of the outer cylinder 1, the outer cylinders 1 can be separated for cleaning by rotating the outer cylinder 1, the filter cloth 17 is fixedly connected at the top of the oil blocking block 14, when hydraulic oil enters the filter cylinder 16, the filter cloth 17 arranged in the filter cylinder 16 filters hydraulic oil once, and the filter cloth 17 is tightly attached to the inner wall of the filter cylinder 16, the hydraulic oil filtered out on the filter cloth 17 is subjected to secondary filtration through the filter holes 15 on the filter drum 16, at the moment, the hydraulic oil subjected to secondary filtration is discharged through the oil outlet holes 9 arranged on the outer drum 1, the front end of the outer wall of the oil inlet pipe 6 penetrates through and is provided with the throttle valve 7, the middle position of the outer wall of the outer drum 1 is penetrated through and is provided with the pressure regulating valve 5, the top of the pressure regulating valve 5 penetrates through and is provided with the pressure gauge 4, the middle position of the outer wall of one side of the pressure regulating valve 5 penetrates through and is in threaded connection with the pressure regulating block 8, the pressure regulating valve 5 arranged on the oil inlet hole 6 can detect the pressure of an oil way in the hydraulic oil tank in the process of entering the hydraulic oil, if the pressure is overlarge, the hydraulic oil cannot directly enter the filter drum 16, the pressure of the oil inlet is regulated through the pressure regulating block 8, and the pressure of the oil way of the hydraulic oil tank can reach the pressure suitable for entering the filter drum 16.

The second connecting block 11 is in threaded connection with the connecting groove 12, the internal thread 13 is in threaded connection with the external thread 18, after cleaning is completed, the device can be assembled and used only by means of threaded connection of the connecting groove 12, the second connecting block 11, the oil plugging block 14, the first connecting block 10, the internal thread 13 and the external thread 18, the handle 3 is fixedly connected to the middle position of the top of the cylinder cover 2, the filter cloth 17 is located inside the filter cylinder 16 and clings to the inner wall of the filter cylinder 16, and the outer wall of the outer cylinder 1 penetrates through and is provided with evenly distributed oil outlets 9.

Working principle: firstly, when the device is used, the oil inlet hole 6 is connected with the oil outlet of a hydraulic tank of an excavator, hydraulic oil enters the interior of a filter hole 15 through the oil inlet hole 6, a pressure regulating valve 5 arranged on the oil inlet hole 6 can detect the pressure of an oil path in the hydraulic oil tank in the process of entering the hydraulic oil, if the pressure is too large, the hydraulic oil cannot directly enter a filter cylinder 16, the pressure regulating valve 5 is regulated by a pressure regulating block 8 to regulate the pressure of the oil inlet, so that the pressure of the oil path of the hydraulic oil tank can reach the pressure suitable for entering the filter cylinder 16, when the hydraulic oil enters the filter cylinder 16, a filter cloth 17 arranged in the filter cylinder 16 carries out primary filtration on the hydraulic oil, meanwhile, the filter cloth 17 is tightly attached to the inner wall of the filter cylinder 16, the hydraulic oil filtered on the filter cloth 17 carries out secondary filtration through the filter hole 15 on the filter cylinder 16, the hydraulic oil after secondary filtration is discharged through the oil outlet 9 arranged on the outer cylinder 1, when the filtering device needs to be cleaned, the cylinder cover 2 is rotated and taken out from the outer cylinder 1 by rotating the handle, the filter cylinder 16 is fixed on the first connecting block 10, the first connecting block 10 is fixed on the cylinder cover 2 and correspondingly takes out the filter cylinder 16, the oil blocking block 14 and the filter cloth 17 are fixedly connected, the oil blocking block 14 and the filter cylinder 16 are in threaded connection, the filter cloth 17 can be taken out for cleaning by rotating the oil blocking block 14, the connecting grooves 12 and the second connecting blocks 11 which are in threaded connection are arranged at the top and the bottom of the outer cylinder 1, the outer cylinders 1 can be separated for cleaning by rotating the outer cylinder 1, and after cleaning is finished, the connecting grooves 12, the second connecting blocks 11, the oil blocking block 14 and the first connecting blocks 10 are only used for cleaning, the device can be assembled for use by screwing the internal thread 13 and the external thread 18.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a hydraulic oil return filter equipment for excavator, includes urceolus (1), its characterized in that: the automatic oil filling device is characterized in that a second connecting block (11) is fixedly connected to the middle position of the bottom of the outer cylinder (1), an inner thread (13) is arranged above the inner wall of the outer cylinder (1), a connecting groove (12) is formed in the top of the outer cylinder (1), a cylinder cover (2) is arranged above the outer cylinder (1), an oil inlet pipe (6) is fixedly connected to the middle position of the left outer wall of the cylinder cover (2), a first connecting block (10) is fixedly connected to the middle position of the bottom of the outer cylinder (1), an outer thread (18) is arranged on the outer wall of the first connecting block (10), a filter cartridge (16) is fixedly connected to the bottom of the first connecting block (10), an evenly distributed filter hole (15) is formed in the outer wall of the filter cartridge (16), an oil blocking block (14) is connected to the bottom thread of the filter cloth (17) in a penetrating mode, a throttle valve (7) is arranged at the front end of the outer wall of the oil inlet pipe (6), a pressure regulating valve (5) is arranged at the middle position of the outer wall (1), and a pressure regulating valve (5) is arranged at the middle position of the outer wall of the outer cylinder (1), and the pressure regulating valve (5) is penetrated through the pressure regulating valve (5).

2. The hydraulic oil return filtering device for an excavator according to claim 1, wherein: the second connecting block (11) is in threaded connection with the connecting groove (12).

3. The hydraulic oil return filtering device for an excavator according to claim 1, wherein: the internal thread (13) is in threaded connection with the external thread (18).

4. The hydraulic oil return filtering device for an excavator according to claim 1, wherein: the middle position of the top of the cylinder cover (2) is fixedly connected with a handle (3).

5. The hydraulic oil return filtering device for an excavator according to claim 1, wherein: the filter cloth (17) is positioned inside the filter cylinder (16) and is clung to the inner wall of the filter cylinder (16).

6. The hydraulic oil return filtering device for an excavator according to claim 1, wherein: the outer wall of the outer cylinder (1) penetrates through and is provided with oil outlet holes (9) which are uniformly distributed.