CN216867171U - Hydraulic oil filter, hydraulic system and operation machine - Google Patents

Abstract

The utility model relates to the technical field of filtration, and provides a hydraulic oil filter, a hydraulic system and an operating machine. According to the utility model, the oil return baffle is arranged, so that hydraulic oil return flowing into the shell from the oil return port is effectively prevented from impacting the filter element, the protection effect on the filter element is realized, the service life of the filter element is prolonged, and the safe operation is ensured.

Description

Hydraulic oil filter, hydraulic system and operation machine

Technical Field

The utility model relates to the technical field of filtration, in particular to a hydraulic oil filter, a hydraulic system and an operating machine.

Background

The hydraulic system of the concrete pump truck has large oil return flow and large impact, and the welding seam cracking and other faults of the conventional filter welding type baffle plate are easy to occur under the action of hydraulic oil return fatigue impact, so that the baffle plate falls off, the filter element is damaged, and the whole hydraulic system is polluted. Moreover, the oil return flow is large, so that the oil return disturbs the hydraulic oil return in the oil tank severely.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hydraulic oil filter, a hydraulic system and an operating machine, which are used for solving the defect that a filter element of the filter in the prior art is easy to damage due to hydraulic return oil impact, preventing the filter element from being impacted by hydraulic return oil, protecting the filter element and prolonging the service life.

The utility model provides a hydraulic oil filter which comprises a shell and a filter element inserted in the shell, wherein an oil return opening is formed in the side wall of the shell, an oil return baffle plate opposite to the oil return opening is arranged between the shell and the filter element, flanges are respectively arranged on two opposite sides of the oil return baffle plate, the shell is provided with nested grooves which are correspondingly matched with the flanges one by one, and the flanges are hermetically embedded in the nested grooves on the corresponding sides.

According to the hydraulic oil filter provided by the utility model, the flanging is welded and sealed with the nesting groove.

According to the hydraulic oil filter provided by the utility model, the oil return baffle is provided with a plurality of first through holes, and the first through holes and the oil return opening are arranged in a staggered manner.

The hydraulic oil filter further comprises a diffuser, an oil inlet of the diffuser is in butt joint with an oil outlet of the filter element, and second through holes are formed in the peripheral side of the diffuser.

According to the hydraulic oil filter provided by the utility model, the bottom end of the diffuser is provided with the first sealing plate, the first sealing plate is welded with the side wall of the diffuser, the outer side of the first sealing plate is provided with the reinforcing ribs, and the reinforcing ribs are welded with the side wall of the diffuser.

According to the hydraulic oil filter provided by the utility model, the top end of the diffuser is provided with the second sealing plate, the second sealing plate is welded with the side wall of the diffuser, and an oil inlet formed in the second sealing plate is butted with an oil outlet of the filter element through the transition pipe.

According to the hydraulic oil filter provided by the utility model, the top end of the filter element is connected with the handle.

According to the hydraulic oil filter provided by the utility model, the outer contour of the oil return baffle is matched with the inner contour of the shell.

The utility model also provides a hydraulic system which comprises an oil return pipeline, an oil tank and the hydraulic oil filter, wherein the oil return pipeline is connected with the oil return port, and the oil tank is connected with the oil outlet of the filter element.

The utility model also provides a working machine comprising a hydraulic oil filter as described above or a hydraulic system as described above.

The hydraulic oil filter, the hydraulic system and the operation machine provided by the utility model comprise a shell and a filter element inserted in the shell, wherein an oil return opening is formed in the side wall of the shell, an oil return baffle is arranged between the shell and the filter element, the oil return baffle is arranged opposite to the oil return opening, the oil return baffle is connected with the shell, and through the arrangement of the oil return baffle, the hydraulic oil return flowing into the shell from the oil return opening is effectively prevented from impacting the filter element, the protection effect on the filter element is realized, the service life of the filter element is prolonged, and the safe operation is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a hydraulic oil filter provided by the present invention;

FIG. 2 is a top view of a hydraulic oil filter provided by the present invention;

FIG. 3 is a schematic diagram of a diffuser in a hydraulic oil filter according to the present invention;

FIG. 4 is a bottom view of a diffuser in a hydraulic oil filter provided by the present invention;

reference numerals are as follows:

100: a housing; 110: an oil return port; 120: embedding a sleeve groove;

200: a filter element; 300: an oil return baffle; 310: a first perforation;

320: flanging; 400: a diffuser; 410: a second perforation;

420: a first seal plate; 430: a second seal plate; 440: a transition duct;

450: reinforcing ribs; 500: an oil return line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The following describes a hydraulic oil filter according to the present invention with reference to fig. 1 to 4, which includes a casing 100 and a filter element 200 inserted into the casing 100, wherein an oil return opening 110 is formed in a side wall of the casing 100, an oil return baffle 300 is disposed between the casing 100 and the filter element 200, the oil return baffle 300 is disposed opposite to the oil return opening 110, and the oil return baffle 300 is connected to the casing 100. It can be understood that the housing 100 and the filter element 200 are included, the housing 100 is provided with an oil return cavity, the filter element 200 is inserted into the oil return cavity of the housing 100, the housing 100 is used for protecting the filter element 200, and the filter element 200 is used for filtering hydraulic oil returning into the oil return cavity. The side wall of the housing 100 is provided with an oil return opening 110, and the oil return pipeline 500 is communicated with the oil return cavity through the oil return opening 110, so that hydraulic return oil flows back into the oil return cavity.

An oil return baffle 300 is arranged between the casing 100 and the filter element 200, the oil return baffle 300 is arranged opposite to the oil return opening 110, so that hydraulic oil returning from the oil return opening 110 into the casing 100 corresponds to the oil return baffle 300, and the oil return baffle 300 bears impact of the hydraulic oil returning. That is to say, the setting position of the oil return baffle 300 corresponds to the oil return opening 110, so as to prevent the hydraulic oil return from impacting the filter element 200, and protect the filter element 200.

It should be noted that the size of the oil return baffle 300 is equal to or larger than the size of the oil return opening 110, so as to ensure that the hydraulic return oil flowing into the oil return cavity acts on the oil return baffle 300, and prevent the hydraulic return oil from impacting the filter element 200.

Further, the oil return baffle 300 is connected to the casing 100, so that the oil return baffle 300 is fixed to the casing 100. The setting position of the oil return opening 110 can be distributed according to the actual working condition, and then the mounting position of the oil return baffle plate 300 is set according to the setting position of the oil return opening 110, so that the flexibility and the applicability are improved, and the pipeline arrangement is facilitated.

It should be noted that a gap is provided between the oil return baffle 300 and the inner wall of the housing 100, so that the hydraulic return oil flows into the oil return cavity and further flows into the filter element 200. The height of the oil return baffle 300 is less than the height of the casing 100, so that the hydraulic return oil in the oil return cavity is ensured to flow from one side of the oil return baffle 300 to the other side.

It should be further noted that the structure of the oil return baffle 300 may be an arc-shaped plate, or may be an annular structure, where the outer diameter of the oil return baffle 300 of the annular structure is smaller than the inner diameter of the casing 100, and the inner diameter of the oil return baffle 300 of the annular structure is larger than the diameter of the filter element 200, so as to ensure that the hydraulic return oil can flow into the filter element 200, and thus the hydraulic return oil is filtered.

According to the hydraulic oil filter provided by the utility model, the oil return baffle 300 is provided with a plurality of first through holes 310, and the first through holes 310 and the oil return opening 110 are arranged in a staggered manner. It is understood that the oil return baffle 300 is provided with a plurality of first through holes 310, the oil return baffle 300 is vertically arranged along the axial direction of the casing 100, and the hole direction of the first through holes 310 is perpendicular to the axial direction of the casing 100. The first through hole 310 and the oil return port 110 are arranged in a staggered manner, so that hydraulic return oil flowing into the oil return port 110 is prevented from directly passing through the first through hole 310 to impact the filter element 200.

That is, the hydraulic return oil entering the housing 100 through the oil return port 110 impacts the oil return baffle 300, and after the impact force is reduced, the hydraulic return oil flows downward along the axial direction of the housing 100 and further flows into the filter element 200, wherein a part of the hydraulic return oil flows into the filter element 200 through the first through hole 310, and the flow speed is slow, and the impact force causing damage to the filter element 200 cannot be generated.

According to the hydraulic oil filter provided by the utility model, two opposite sides of the oil return baffle 300 are respectively provided with the flanges 320, the shell 100 is provided with the nested grooves 120 which are correspondingly matched with the flanges 320 one by one, and the flanges 320 are hermetically embedded in the nested grooves 120 on the corresponding sides. It can be understood that the two opposite sides of the oil return baffle 300 are respectively provided with flanges 320, and the flanges 320 are vertically arranged along the axial direction of the casing 100. The housing 100 is provided with two nesting grooves 120 and is correspondingly matched with the two flanges 320 one by one, so that the flanges 320 are in sealing embedding assembly with the nesting grooves 120 on the corresponding sides. In this embodiment, the nesting groove 120 is disposed on the side wall of the casing 100, and the upper end of the nesting groove 120 is open and penetrates through the side wall of the casing 100 along the direction perpendicular to the axis of the casing 100, so that the flange 320 is embedded in the nesting groove 120 from the upper end of the nesting groove 120.

In one embodiment, the upper end of the nesting groove 120 is open, the nesting groove 120 is a blind hole along the direction vertical to the axis of the shell 100, and the flange 320 is clamped in the nesting.

The hydraulic oil filter further comprises a diffuser 400, an oil inlet of the diffuser 400 is in butt joint with an oil outlet of the filter element 200, and a second perforation 410 is formed in the peripheral side of the diffuser 400. It can be understood that the bottom side of the housing 100 is further provided with a diffuser 400, the oil inlet of the diffuser 400 is in butt joint with the oil outlet of the filter element 200, so that the hydraulic return oil filtered by the filter element 200 flows into the diffuser 400 from the oil outlet of the filter element 200. The diffuser 400 is provided with a plurality of second through holes 410 on the circumferential side thereof, and the second through holes 410 are uniformly arranged, so that the hydraulic return oil flowing into the diffuser 400 is diffused from the second through holes 410 to the circumferential side of the diffuser 400, thereby reducing the flow rate of the hydraulic return oil and the disturbance of the hydraulic oil in the oil tank.

According to the hydraulic oil filter provided by the utility model, the bottom end of the diffuser 400 is provided with the first sealing plate 420, the first sealing plate 420 is welded with the side wall of the diffuser 400, the outer side of the first sealing plate 420 is provided with the reinforcing ribs 450, and the reinforcing ribs 450 are welded with the side wall of the diffuser 400. It will be appreciated that the bottom end of the diffuser 400, i.e., the end of the diffuser 400 remote from the casing 100, is provided with a first cover plate 420 to prevent the return hydraulic oil from flowing from the bottom end of the diffuser 400 into the tank. The circumferential side of the first sealing plate 420 is welded to the inner sidewall of the diffuser 400, thereby securing the coupling strength. The outside of first shrouding 420, one side that first shrouding 420 carried on the back mutually with casing 100 promptly is equipped with strengthening rib 450, and strengthening rib 450 sets up a plurality ofly to evenly set up along first shrouding 420's circumference, and set up in the junction of first shrouding 420 and casing 100's inside wall, be used for strengthening first shrouding 420 and casing 100's joint strength, and then increase first shrouding 420 to the shock resistance of hydraulic pressure oil return, prevent that first shrouding 420 from droing.

According to the hydraulic oil filter provided by the utility model, the top end of the diffuser 400 is provided with the second sealing plate 430, the second sealing plate 430 is welded with the side wall of the diffuser 400, and the oil inlet of the second sealing plate 430 is butted with the oil outlet of the filter element 200 through the transition pipe 440. It will be appreciated that the top end of the diffuser 400, i.e., the end of the diffuser 400 adjacent the housing 100, is provided with a second cover plate 430. The side of the second cover plate 430 facing away from the housing 100 is welded to the top end of the side wall of the diffuser 400. The first sealing plate 420, the second sealing plate 430 and the side wall of the diffuser 400 are enclosed to form an oil storage cavity, that is, the oil inlet of the diffuser 400 is communicated with the oil storage cavity, and the filtered hydraulic return oil flows into the oil storage cavity to play a certain role in buffering, and then flows out from the second through hole 410 to the peripheral side of the diffuser 400 in a diffusion manner.

The second sealing plate 430 has an oil inlet, and is butted with the oil outlet of the filter element 200 through the transition pipe 440, and the hydraulic return oil filtered by the filter element 200 is delivered into the diffuser 400 through the transition pipe 440.

According to the hydraulic oil filter provided by the utility model, the oil return baffle 300 is welded with the shell 100. It can be understood that the flap of the oil return baffle 300 is connected with the nesting groove 120 of the casing 100 by welding, so that the installation strength of the oil return baffle 300 is ensured.

According to the hydraulic oil filter provided by the utility model, the outer contour of the oil return baffle 300 is matched with the inner contour of the shell 100. It can be understood that the outer contour of the oil return baffle 300 is matched with the inner contour of the housing 100, so that the oil return baffle 300 is installed in the housing 100, and further the installation position of the oil return opening 110 is matched.

The working process of the hydraulic oil filter provided by the utility model is as follows:

hydraulic return oil enters the shell 100 through the oil return port 110 of the shell 100, and falls into the oil return cavity of the shell 100 after being subjected to impact force of the hydraulic return oil by the oil return baffle 300, wherein part of the hydraulic return oil directly enters the filter element 200 from the lower part of the oil return baffle 300, and the other part of the hydraulic return oil enters the filter element 200 through the first through hole 310 of the oil return baffle 300;

after being filtered by the filter element 200, the hydraulic return oil flows into the diffuser 400 through the oil outlet of the filter element 200, the transition pipe 440 and the oil inlet, and the hydraulic return oil uniformly flows out to the peripheral side of the diffuser 400 through the second through hole 410 of the diffuser 400 under the buffering action of the diffuser 400.

The utility model also provides a hydraulic system, which comprises an oil return pipeline 500, an oil tank and the hydraulic oil filter, wherein the oil return pipeline 500 is connected with the oil return port 110, and the oil tank is connected with the oil outlet of the filter element 200. It will be appreciated that the return line 500 is connected to the return port 110 of the housing 100 to enable the delivery of hydraulic return oil into the housing 100. The diffuser 400 is communicated with the oil tank, and the hydraulic return oil filtered by the filter element 200 flows into the oil tank through the second through hole 410 of the diffuser 400.

The utility model also provides a working machine comprising a hydraulic oil filter as described above or a hydraulic system as described above. It will be appreciated that the work machine is a concrete pump truck or a crane.

The hydraulic oil filter, the hydraulic system and the operation machine provided by the utility model comprise a shell and a filter element inserted in the shell, wherein an oil return opening is formed in the side wall of the shell, an oil return baffle is arranged between the shell and the filter element, the oil return baffle is arranged opposite to the oil return opening, the oil return baffle is connected with the shell, and through the arrangement of the oil return baffle, hydraulic return oil flowing into the shell from the oil return opening is effectively prevented from impacting the filter element, the protection effect on the filter element is realized, the service life of the filter element is prolonged, and the safe operation is guaranteed.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a hydraulic oil filter, its characterized in that, including casing and cartridge in filter core in the casing, the lateral wall of casing is equipped with the oil return opening, the casing with be equipped with between the filter core with the relative oil return baffle of oil return opening, the double-phase offside of oil return baffle is equipped with the turn-ups respectively, the casing be equipped with the nested groove of turn-ups one-to-one adaptation, the turn-ups is sealed to be inlayed and is located the correspondence side the nested inslot.

2. The hydraulic oil filter of claim 1, wherein the bead is welded to the nested well.

3. The hydraulic oil filter of claim 1, wherein the oil return baffle is provided with a plurality of first perforations, and the first perforations are offset from the oil return opening.

4. The hydraulic oil filter of claim 1, further comprising a diffuser, wherein the oil inlet of the diffuser is in butt joint with the oil outlet of the filter element, and a second through hole is formed in the peripheral side of the diffuser.

5. The hydraulic oil filter of claim 4, wherein the bottom end of the diffuser is provided with a first sealing plate welded to the side walls of the diffuser, and the outer side of the first sealing plate is connected to a reinforcing rib welded to the side walls of the diffuser.

6. The hydraulic oil filter of claim 4, wherein a second sealing plate is disposed at a top end of the diffuser, the second sealing plate is welded to a side wall of the diffuser, and an oil inlet opening of the second sealing plate is in butt joint with an oil outlet opening of the filter element through a transition pipe.

7. The hydraulic oil filter of claim 1, wherein a handle is connected to the top end of the filter element.

8. Hydraulic oil filter according to any one of claims 1-7, characterised in that the outer contour of the oil return baffle is adapted to the inner contour of the housing.

9. A hydraulic system, comprising an oil return line, an oil tank and a hydraulic oil filter according to any one of claims 1 to 8, wherein the oil return line is connected to the oil return port, and the oil tank is connected to an oil outlet of the filter element.

10. A working machine, characterized by comprising a hydraulic oil filter according to any one of claims 1-8 or a hydraulic system according to claim 9.

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