Filtering device for hydraulic oil

Abstract

The utility model relates to the technical field of hydraulic oil filtration, and solves the problem that when hydraulic oil is conveyed back and forth, the returned and filtered hydraulic oil can bring back impurities adhered to a pipe wall during output. The hydraulic oil filtering device comprises an oil filtering tank, the left end and the right end of the oil filtering tank are connected with an oil inlet pipe and an oil outlet pipe, the installation height of the oil inlet pipe is larger than that of the oil outlet pipe, a plurality of oil filtering cavities are formed in the oil filtering tank, and an oil filtering piece is installed in one oil filtering cavity; the oil filtering chamber comprises a first chamber formed by a first isolation plate and the side wall of the oil filtering tank, a second chamber formed by the first isolation plate and a second isolation plate, and a third chamber formed by the second isolation plate and the side wall of the oil filtering tank, the oil inlet pipe is communicated with the first chamber, and the oil outlet pipe forms a connecting channel of the third chamber and the oil tank; the oil filtering piece is installed in the second cavity and comprises an impurity containing plate installed at the bottom of the second cavity and a buffer plate installed on the impurity containing plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic oil filter technology field, concretely is a kind of hydraulic oil filter device. BACKGROUND

[0002] When maintaining numerous concrete pump trucks, hydraulic oil needs to be frequently pumped out from hydraulic equipment, and then new hydraulic oil is replaced. Alternatively, after pumping out hydraulic oil, it is placed in a container for a period of time, and the impurities therein are settled to the bottom after a period of time of standing, and then the clarified hydraulic oil is pumped out and returned to the hydraulic device. The above method can certainly realize the normal operation of the hydraulic device, but the disadvantage is that when the hydraulic oil is returned, the impurities adhering to the pipe wall during output are brought back, resulting in some impurities suspended in the hydraulic oil. SUMMARY

[0003] To overcome the shortcomings of the prior art, the utility model provides a hydraulic oil filter device, which solves the problem that when the hydraulic oil is returned, the impurities adhering to the pipe wall during output are brought back.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a hydraulic oil filter device, comprising an oil filter tank, an oil inlet pipe and an oil outlet pipe are connected to the left and right ends of the oil filter tank, the installation height of the oil inlet pipe is greater than that of the oil outlet pipe, a plurality of oil filter chambers are arranged in the oil filter tank, and a filter element is arranged in a selected oil filter chamber.

[0005] The oil filter chamber comprises a first chamber established by a first partition plate and a side wall of the oil filter tank, a second chamber established by the first partition plate and a second partition plate, and a third chamber established by the second partition plate and the side wall of the oil filter tank, the oil inlet pipe is in communication with the first chamber, and the oil outlet pipe establishes a connection passage between the third chamber and the oil tank.

[0006] The filter element is installed in the second chamber, and comprises a foreign matter placement plate installed at the bottom of the second chamber and a buffer plate installed on the foreign matter placement plate.

[0007] In one embodiment, an oil passing opening in communication with the second chamber is formed in the first partition plate, the first partition plate comprises an upper plate located at the upper end of the oil passing opening and a lower plate located at the lower end of the oil passing opening, both the upper plate and the lower plate are flat plates, and a cantilever plate is installed on the right side of the upper plate and is horizontal to the bottom surface of the upper plate.

[0008] The cantilever plate is triangular and the inclined surface is located in the first chamber.

[0009] In one of the embodiments, the top surface of the lower plate is an inclined surface, the height of which gradually decreases from right to left, the right side surface of the lower plate is located on the same vertical line as the right side surface of the upper plate, and the extension of the cantilever plate to the first chamber stops at the position covering the right side surface of the lower plate.

[0010] In one of the embodiments, the second isolation plate is provided with an oil outlet communicating the second chamber and the third chamber, and the opening height of the oil outlet is greater than the opening height of the oil overflow port.

[0011] The second isolation plate comprises a top plate and a bottom plate, and the top surface of the bottom plate is an inclined surface gradually increasing in height from right to left.

[0012] In one of the embodiments, the top surface of the impurity placement plate and the bottom surface of the buffer plate are both provided in a wavy shape to increase the contact area of impurities, a plurality of overflow holes are equidistantly arranged on the buffer plate, and the buffer plate is arranged below the oil overflow port.

[0013] In one of the embodiments, the inlet oil pipe is arranged above the mounting position of the cantilever plate in the first chamber, and the outlet oil pipe is arranged at the lower end of the oil outlet.

[0014] Compared with the prior art, the hydraulic oil filtering device has the following advantages

[0015] Advantages:

[0016] In the technical scheme, the output oil pipe and the return oil pipe are separated, the unfiltered hydraulic oil and the filtered hydraulic oil are separately transported by the separate inlet oil pipe and the outlet oil pipe, the filter element, the first chamber, the second chamber and the third chamber for filtering the oil body are arranged in the filter pressure box, the number and frequency of the static placement are increased, and the probability of the impurities flowing back with the return oil body is reduced.

[0017] The shape of the impurity placement plate and the buffer plate can increase the attachment area of the impurities thereon and reduce the movement of the impurities with the upper oil body, and the buffer plate arranged at the upper end of the impurity placement plate can impact the hydraulic oil that has been statically placed to cause the impurities to float up when the oil body in the first chamber flows into the second chamber, thereby increasing the static placement effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0019] Fig. 1 It is a schematic diagram of the overall structure of the present application.

[0020] Fig. 2The utility model discloses an oil filter tank internal structure schematic view.

[0021] Fig. 3 The utility model discloses an oil filter piece structure schematic view.

[0022] In the drawing: 1, filter oil tank, 2, oil inlet pipe, 3, oil outlet pipe, 4, filter oil chamber, 41, first isolation plate, 411, oil passing port, 412, upper plate, 413, lower plate, 414, pick plate, 42, first chamber, 43, second isolation plate, 431, oil outlet, 432, bottom plate, 44, second chamber, 45, third chamber, 5, filter oil piece, 51, impurity setting plate, 52, buffer plate, 53, overflow hole. DETAILED DESCRIPTION

[0023] The embodiment of the application will be described below in detail with the drawings and examples, so that the realization process of how the application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0024] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] Figs. 1-3 For an embodiment of the utility model, the specific problem that the embodiment is directed to is that when maintaining numerous concrete pump trucks, the hydraulic oil needs to be frequently pumped out from the hydraulic equipment and then new hydraulic oil is replaced. Or after pumping out the hydraulic oil, the hydraulic oil is placed in a container for a period of time, the impurities in the hydraulic oil are settled to the bottom after a period of static placement, and then the clarified hydraulic oil is pumped out and fed back to the hydraulic device. The above method can certainly realize the normal operation of the hydraulic device, but the disadvantage is that when feeding back the filtered hydraulic oil, the impurities adhering to the pipe wall during output are brought back, resulting in some impurities suspended in the hydraulic oil. In view of the problem that when feeding back the filtered hydraulic oil, the impurities adhering to the pipe wall during output are brought back, the scheme describes a hydraulic oil filtering device, which separates the output oil pipe 3 from the feedback oil pipe, uses a separate oil inlet pipe 2 and an oil outlet pipe 3 to separately feed the unfiltered hydraulic oil and the filtered hydraulic oil, and sets filter oil pieces 5, a first chamber 42, a second chamber 44 and a third chamber 45 for filtering the oil body in the filter tank, so as to increase the number and frequency of static placement and reduce the probability of impurities being brought back with the feedback oil body.

[0026] A hydraulic oil filtering device, comprising a filter tank 1, the left and right ends of the filter tank 1 are connected with an oil inlet pipe 2 and an oil outlet pipe 3, the installation height of the oil inlet pipe 2 is greater than that of the oil outlet pipe 3, a plurality of oil filtering chambers 4 are arranged in the filter tank 1, and a filter 5 is arranged in a selected oil filtering chamber 4.

[0027] The oil filtering chamber 4 comprises a first chamber 42 formed by a first partition plate 41 and the side wall of the filter tank 1, a second chamber 44 formed by the first partition plate 41 and a second partition plate 43, and a third chamber 45 formed by the second partition plate 43 and the side wall of the filter tank 1, the oil inlet pipe 2 is communicated with the first chamber 42, the oil outlet pipe 3 forms a connecting passage between the third chamber 45 and the filter tank, an oil overflow port 411 is formed in the first partition plate 41 and communicated with the second chamber 44, an adjusting valve is arranged on the oil overflow port 411, a liquid level sensor is arranged in the second chamber 44, when the liquid level sensor detects that the oil surface of the second chamber 44 is greater than the oil overflow port 411, the adjusting valve is driven to close the oil overflow port 411, so as to avoid the oil in the second chamber 44 flowing back to the first chamber 42, the first partition plate 41 comprises an upper plate 412 located at the upper end of the oil overflow port 411 and a lower plate 413 located at the lower end of the oil overflow port 411, the upper plate 412 and the lower plate 413 are both flat plates, a cantilever plate 414 is arranged on the right side of the upper plate 412 and is horizontal to the bottom surface of the upper plate 412, the cantilever plate 414 is in the shape of a right triangle and the inclined surface is located in the first chamber 42, the top surface of the lower plate 413 is an inclined surface, and the height gradually decreases from right to left, the right side surface of the lower plate 413 is located on the same vertical line as the right side surface of the upper plate 412, and the extension of the cantilever plate 414 to the first chamber 42 covers the right side surface of the lower plate 413. The setting position of the oil inlet pipe 2 in the first chamber 42 is above the installation position of the cantilever plate 414, and the setting position of the oil outlet pipe 3 is below the lower end of the oil outlet port 431. The cantilever plate 414 can shield the oil overflow port 411 when the oil inlet pipe 2 injects hydraulic oil into the first chamber 42, and the hydraulic oil is guided by the inclination of the cantilever plate 414 to avoid the oil directly entering the oil overflow port 411 and directly entering the second chamber 44, the second partition plate 43 is provided with an oil outlet port 431 communicated between the second chamber 44 and the third chamber 45, the opening height of the oil outlet port 431 is greater than that of the oil overflow port 411, and the second partition plate 43 comprises a top plate and a bottom plate 432, the top surface of the bottom plate 432 is an inclined surface and gradually increases from right to left, but in order to output the impurities remaining in the first chamber 42 and the second chamber 44 after filtering, a clean oil port is arranged at the bottom of the first chamber 42 and the second chamber 44, an adjusting valve is arranged in the clean oil port, and the oil outlet port 431 of the second chamber 44 penetrates a strainer 51.

[0028] The oil filter 5 is installed in the second chamber 44, which comprises a dirt setting plate 51 installed at the bottom of the second chamber 44 and a buffer plate 52 installed on the dirt setting plate 51, the top surface of the dirt setting plate 51 and the bottom surface of the buffer plate 52 are both in a wavy shape to increase the contact area of impurities, a plurality of overflow holes 53 are equidistantly arranged on the buffer plate 52, and the buffer plate 52 is arranged below the oil outlet 411. The shapes of the dirt setting plate 51 and the buffer plate 52 can increase the attachment area of impurities thereon and reduce the movement of impurities with the upper oil body, and the buffer plate 52 arranged at the upper end of the dirt setting plate 51 can impact the hydraulic oil that has been standing to cause the impurities to float up and increase the standing effect when the oil in the first chamber 42 flows into the second chamber 44.

[0029] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil filtration device, comprising an oil filter tank (1), characterized in that: The oil filter box (1) is connected to an oil inlet pipe (2) and an oil outlet pipe (3) at its left and right ends. The installation height of the oil inlet pipe (2) is greater than the installation height of the oil outlet pipe (3). The oil filter box (1) is provided with several oil filter chambers (4). An oil filter element (5) is installed in one of the oil filter chambers (4). The oil filter chamber (4) includes a first chamber (42) established by the first isolation plate (41) and the side wall of the oil filter box (1), a second chamber (44) established by the first isolation plate (41) and the second isolation plate (43), a third chamber (45) constructed by the second isolation plate (43) and the side wall of the oil filter box (1), an oil inlet pipe (2) connected to the first chamber (42), and an oil outlet pipe (3) forming a connection channel between the third chamber (45) and the oil box; The oil filter element (5) is installed in the second chamber (44), and includes a waste disposal plate (51) installed at the bottom of the second chamber (44) and a buffer plate (52) installed on the waste disposal plate (51).

2. The hydraulic oil filtering device according to claim 1, characterized in that: The first isolation plate (41) has an oil passage (411) communicating with the second chamber (44). The first isolation plate (41) includes an upper plate (412) located above the oil passage (411) and a lower plate (413) located below the oil passage (411). Both the upper plate (412) and the lower plate (413) are flat. A cantilever plate (414) with a cut-off surface level with the bottom surface of the upper plate (412) is installed on the right side of the upper plate (412). The pick plate (414) is triangular in shape and its inclined surface is located in the first chamber (42).

3. The hydraulic oil filtering device according to claim 2, characterized in that: The top surface of the lower plate (413) is an inclined surface, and its height gradually decreases from right to left. The right side of the lower plate (413) and the right side of the upper plate (412) are on the same vertical line. The extension stop position of the cantilever plate (414) into the first chamber (42) covers the right side of the lower plate (413).

4. The hydraulic oil filtering device according to claim 1, characterized in that: The second isolation plate (43) has an oil outlet (431) that connects the second chamber (44) and the third chamber (45), and the opening height of the oil outlet (431) is greater than the opening height of the oil passage (411); The second isolation plate (43) includes a top plate and a bottom plate (432), the top surface of the bottom plate (432) is inclined and gradually increases from right to left.

5. A hydraulic oil filtration device according to claim 1, characterized in that: The top surface of the impurity plate (51) and the bottom surface of the buffer plate (52) are both wavy to increase the contact area of ​​impurities. Several overflow holes (53) are equally spaced on the buffer plate (52). The buffer plate (52) is located below the oil outlet (411).

6. The hydraulic oil filtering device according to claim 1, characterized in that: The oil inlet pipe (2) is positioned above the mounting position of the pick plate (414) in the first chamber (42), and the oil outlet pipe (3) is positioned below the oil outlet (431).

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