Hydraulic oil fine filter and recovery device

Abstract

The utility model relates to the technical field of hydraulic oil filtration, in particular to a hydraulic oil fine filter and a recovery device. The hydraulic oil fine filter comprises a fine filter tank, two filter elements are detachably connected in parallel in the fine filter tank, and the top surface of the fine filter tank is detachably connected with a pressure transmitter; the fine filtering tank comprises a tank body, and the top end of the tank body is detachably connected with a top cover; an oil inlet blind hole is formed in the side wall of the tank body, an oil outlet is formed in the side wall of the top cover, and connectors are fixedly connected into the oil inlet blind hole and the oil outlet in a sleeved mode respectively. Observation windows are respectively formed in the positions, corresponding to the two filter elements, of the side wall of the tank body; the hydraulic oil recovery device further comprises a hydraulic oil coarse filter, a gear oil pump, an oil outlet pipe and an oil tank. The problems that in the prior art, the structure is complex, the endurance time is short, large-particle or small-particle impurities in the oil product cannot be removed, and the quality of the recycled oil product is difficult to ensure are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic oil filtration technical field especially relates to a kind of hydraulic oil fine filter and recovery device. BACKGROUND

[0002] Hydraulic equipment can occur oil leakage in the operation process, resulting in hydraulic oil into the drainage ditch of factory or industrial site. These oil products contain a large amount of impurities, if directly discharged not only pollute the environment, but also lead to resource waste. The existing oil recovery method cannot effectively remove large particles, small metal particles, sand and other impurities in oil, and the processing efficiency is low. Therefore, a device with high filtration efficiency, simple operation and reliable structure is needed to realize efficient filtration, recovery and reuse of hydraulic oil.

[0003] CN102266689B discloses an oil online purification treatment equipment, comprising oil inlet valve, coarse treatment device, fine filter device and oil outlet valve arranged in sequence and connected by pipeline, vacuum pump is arranged on the pipeline between coarse filter device and fine filter device, the equipment further comprises filter detection control mechanism for detecting the filtering state of fine filter device, the fine filter device comprises at least two multi-stage fine filter mechanisms for filtering particles of different sizes in parallel. However, the prior art structure is relatively complex, and cannot be used for oil recovery work with large and more impurity particles.

[0004] CN218863000U discloses a device for hydraulic oil recycling, comprising oil suction pipe, stop valve one, oil pump inlet filter core, gear oil pump, motor, stop valve two, oil pump outlet filter core and oil tank; the oil suction pipe is connected with the stop valve one through the hose, the stop valve one and the oil pump inlet filter core are connected through the pipeline, the oil pump inlet filter core and the gear oil pump are connected through the pipeline, the pipeline between the oil pump inlet filter core and the gear oil pump is provided with branch pipeline, the branch pipeline is provided with stop valve two, the other end of the branch pipeline is connected with the oil tank through the pipeline, the driving shaft of the gear oil pump is connected with the output end of the motor through the shaft coupling. However, the filter core of the prior art has short endurance time, and cannot detect the quality of the recovered oil, so it is difficult to ensure that the quality of the recovered oil meets the requirements. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hydraulic oil fine filter and recovery device, simple structure, easy operation, high filtration efficiency and long endurance time, can effectively remove large particles and small particle impurities in oil, and can ensure the quality of recovered oil, and prolong the service life of equipment, realize the efficient recovery and reuse of oil product;Solve the problems of prior art structure, short endurance time, cannot remove large particles or small particle impurities in oil and difficult to ensure the quality of recovered oil.

[0006] The utility model provides the following scheme

[0007] A hydraulic oil fine filter, including fine filter jar, the inside detachable parallel connection of fine filter jar has two filter core, fine filter jar's top surface detachable connection has pressure transmitter, fine filter jar includes jar body, the top end detachable connection of jar body has top cap, the lateral wall of jar body is equipped with oil inlet blind hole, the lateral wall of top cap is equipped with oil outlet, the inside fixed sleeve connection of oil inlet blind hole and oil outlet respectively has connector, the lateral wall of jar body and the corresponding position of two filter core respectively is provided with observation window.

[0008] Further, the fine filter jar is a cuboid structure, two cylindrical filter core installation grooves are arranged side by side in the inside of the jar body, the two filter core installation grooves are communicated with each other, and the filter core can be respectively accommodated in the filter core installation groove.

[0009] The communication part between the oil inlet blind hole and the two filter core installation grooves jointly forms a T-shaped channel, so that the hydraulic oil can enter the two filter core installation grooves for filtration at the same time.

[0010] Further, the filter core is a cylindrical structure, and a circular through hole is arranged in the axial middle part of the filter core.

[0011] The filter core is detachably connected to the inside of the fine filter jar through plug-in.

[0012] Further, an oil outlet channel is arranged in the inside of the top cap along the horizontal direction, one end of the oil outlet channel is communicated with the oil outlet, the other end of the oil outlet channel is a closed end, a through hole is arranged in the top surface of the closed end and communicated with the pressure transmitter, and the lower bottom surface of the oil outlet channel is respectively communicated with the upper end of the two connecting pipes.

[0013] The hydraulic oil is filtered by the filter core, then flows into the oil outlet channel through the two connecting pipes, the oil pressure is measured by the pressure transmitter, finally flows out to the outside of the fine filter jar through the oil outlet and the connector, and fine filtration is completed.

[0014] The hydraulic oil recycling device comprises the hydraulic oil fine filter, and further comprises a hydraulic oil coarse filter, a gear oil pump, an oil outlet pipe and an oil tank; the hydraulic oil recycling device is sequentially arranged in the order of the hydraulic oil coarse filter, the hydraulic oil fine filter, the gear oil pump, the oil outlet pipe and the oil tank, wherein the hydraulic oil coarse filter, the hydraulic oil fine filter and the gear oil pump are sequentially communicated through hoses, the oil outlet pipe and the gear oil pump are communicated with each other, and the end of the oil outlet pipe is suspended in the oil tank.

[0015] Further, the hydraulic oil coarse filter is rotatably connected with the end of the corresponding hose through a universal joint.

[0016] The connection through the universal joint can shake off the accumulated impurities by rotating the hydraulic oil coarse filter, so as to maintain the filtering efficiency.

[0017] Further, the oil outlet pipe is provided with an oil outlet valve.

[0018] The oil outlet valve is used to open and close the oil outlet pipe, and can prevent the hydraulic oil from flowing back when the gear oil pump stops working.

[0019] Further, a branch pipe is arranged on the oil outlet pipe and communicated between the oil outlet valve and the gear oil pump, the end of the branch pipe is communicated with a viscometer, and a stop valve is arranged on the branch pipe.

[0020] The viscometer can measure the viscosity of the hydraulic oil, so as to further judge the quality of the recycled hydraulic oil, so as to make proper use subsequently.

[0021] Further, the particle size of the particles filtered by the hydraulic oil coarse filter is greater than or equal to 80 microns, and the particle size of the particles filtered by the hydraulic oil fine filter is greater than or equal to 20 microns.

[0022] The hydraulic oil coarse filter can preliminarily filter the impurities with a particle size greater than or equal to 80 microns in the hydraulic oil, such as metal fragments and plastic pieces; and the hydraulic oil fine filter can further filter the tiny impurities with a particle size greater than or equal to 20 microns in the hydraulic oil, such as fine metal particles and dust.

[0023] Further, a liquid level sensor is arranged on the inner wall of the oil tank.

[0024] The liquid level sensor is arranged for real-time monitoring of the oil storage capacity of the oil tank, so as to ensure safe storage.

[0025] Compared with the prior art, the hydraulic oil recycling device has the following advantages:

[0026] The filter element of the hydraulic oil fine filter is replaceable, maintenance and replacement are facilitated, and the maintenance cost when the filter element is saturated or damaged is reduced; two filter elements are connected in parallel, the endurance of the fine filter is increased, the frequency of filter element replacement is reduced, and the filtering efficiency is improved; the pressure transmitter is provided, whether the filter element is saturated can be judged by measuring whether the oil pressure reaches the set value, and replacement is required; the observation window is arranged, the surface condition of the filter element and the property of the hydraulic oil can be directly observed, and the cost is saved; the hydraulic oil recovery device provided by the utility model can effectively remove large particles and tiny impurities by combining coarse filtration and fine filtration, and the quality of the recovered oil is improved; the hydraulic oil coarse filter is connected with the universal joint, can rotate, avoids the filter blockage caused by impurity accumulation, and improves the operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0028] ATTACHMENT Figure 1 It is the structure explosion schematic view of the hydraulic oil fine filter of the utility model;

[0029] ATTACHMENT Figure 2 It is the structure assembly schematic view of the hydraulic oil fine filter of the utility model;

[0030] ATTACHMENT Figure 3 It is the structure schematic view of the hydraulic oil recovery device of the utility model.

[0031] In the drawing:

[0032] 1-hydraulic oil fine filter, 11-fine filter tank, 111-tank body, 1111-oil inlet blind hole, 1112-filter element installation groove, 1113-observation window, 112-top cover, 1121-oil outlet, 1122-oil outlet channel, 1123-connection pipe, 113-connection head, 12-filter element, 13-pressure transmitter, 2-hydraulic oil coarse filter, 3-gear oil pump, 4-oil outlet pipe, 41-oil outlet valve, 5-oil tank, 51-liquid level sensor, 6-hose, 7-branch pipe, 71-shutoff valve, 8-viscometer. EMBODIMENT

[0033] In order to make the purposes, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0034] The terms used in the embodiments of the present application are only for the purpose of describing particular embodiments and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0035] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0036] It should be understood that although the terms first, second, third, etc. can be used in the embodiments of the present application to describe, these descriptions should not be limited to these terms. These terms are only used to distinguish the description. For example, without departing from the scope of the embodiments of the present application, the first can also be called the second, and similarly, the second can also be called the first.

[0037] Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if it is determined" or "if (a stated condition or event) is detected" can be interpreted as "when it is determined" or "in response to determining" or "when (a stated condition or event) is detected" or "in response to detecting (a stated condition or event)".

[0038] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a product or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such product or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of another identical element in the product or device including the element.

[0039] It is particularly important that the symbols and / or numbers present in the specification, if not marked in the description of the drawings, are not drawing references.

[0040] Embodiment 1, please refer to Figure 1 and Figure 2 As shown in the drawings, the embodiment provides a hydraulic oil fine filter 1, which comprises a fine filter tank 11, the fine filter tank 11 is a cuboid structure as a whole, two filter cartridges 12 are detachably connected inside the fine filter tank 11, an oil inlet blind hole 1111 is arranged on the side wall of the fine filter tank 11, an oil outlet 1121 is arranged on the side wall of a top cover 112 of the fine filter tank 11, a pressure transmitter 13 is detachably connected to the top surface of the top cover 112, a connecting head 113 is fixedly sleeved in the oil inlet blind hole 1111 and the oil outlet 1121 respectively, so as to facilitate the connection with external pipelines; observation windows 1113 are arranged on the side wall of the fine filter tank 11 at the corresponding positions of the two filter cartridges 12 respectively.

[0041] Specifically, the fine filter tank 11 comprises a tank body 111 and a top cover 112, the top cover 112 is detachably connected to the top end of the tank body 111 by bolts; two cylindrical filter element installation grooves 1112 are arranged side by side in the tank body 111, the two filter element installation grooves 1112 are communicated with each other, and the filter elements 12 can be respectively accommodated in the filter element installation grooves 1112; an oil inlet blind hole 1111 is arranged on the front side wall of the tank body 111, and the oil inlet blind hole 1111 and the communication part between the two filter element installation grooves 1112 jointly form a T-shaped channel; the observation windows 1113 are respectively arranged on the side walls of the tank body 111, for observing the use state of the two filter elements 12 and the properties of the hydraulic oil respectively, and in the embodiment, the observation windows 1113 are preferably arranged on the left and right side walls of the tank body 111, and can also be arranged on the positions corresponding to the two filter elements 12 on the front and rear side walls of the tank body 111; the filter element 12 has a cylindrical structure, and a circular through hole is arranged in the middle part thereof; the lower surface of the top cover 112 is provided with connecting pipes 1123 corresponding to the two filter elements 12, and the lower ends of the connecting pipes 1123 can be sealingly inserted into the through holes of the filter elements 12; the inside of the top cover 112 is provided with an oil outlet channel 1122 in the horizontal direction, one end of the oil outlet channel 1122 is communicated with an oil outlet port 1121, and the other end is a closed end, a through hole is arranged on the top surface of the closed end of the oil outlet channel 1122 and is communicated with a pressure transmitter 13, and the middle part of the oil outlet channel 1122 is communicated with the connecting pipes 1123 corresponding to the two filter elements 12, so that the two filter elements 12 are connected in parallel. The hydraulic oil enters the inside of the tank body 111 through the oil inlet blind hole 1111, flows into the two filter element installation grooves 1112 respectively, and then flows into the oil outlet channel 1122 through the two connecting pipes 1123 after being filtered by the filter elements 12, the oil pressure is measured by the pressure transmitter 13, and finally flows out to the outside of the fine filter tank 11 through the oil outlet port 1121 and a connecting head 113, so as to complete fine filtering; during the period, the surface condition of the filter element 12 and the properties of the hydraulic oil can be directly observed through the observation windows 1113, which is intuitive and cost-saving, and the observation windows 1113 can be made of tempered glass; when the oil pressure measured by the pressure transmitter 13 reaches or exceeds the set value, it indicates that the filter element 12 has been saturated and needs to be replaced; the filter element 12 can be replaced by detaching the top cover 112 with a screwdriver; the particle size filtered by the filter element 12 is not less than 20 microns, that is, the particles with a particle size of ≥20 microns cannot pass through the filter element 12, and the fine impurities in the hydraulic oil, such as fine metal particles and dust, can be further filtered out; the use of two filter elements 12 in parallel can increase the endurance of the fine filter, reduce the frequency of replacing the filter element 12, and improve the filtering efficiency.

[0042] Please refer to Figure 3As shown, the embodiment also provides a hydraulic oil recovery device, comprising the hydraulic oil fine filter 1, and further comprising a hydraulic oil coarse filter 2, a gear oil pump 3, an oil outlet pipe 4 and an oil tank 5; the components are sequentially arranged in the order of the hydraulic oil coarse filter 2, the hydraulic oil fine filter 1, the gear oil pump 3, the oil outlet pipe 4 and the oil tank 5, wherein the hydraulic oil coarse filter 2, the hydraulic oil fine filter 1 and the gear oil pump 3 are sequentially communicated through a hose 6, the oil outlet pipe 4 is directly communicated with the gear oil pump 3, and the filtered hydraulic oil is delivered to the oil tank 5 for storage.

[0043] Specifically, the particle size filtered by the hydraulic oil coarse filter 2 is not less than 80 microns, that is, the particles with a particle size of ≥80 microns cannot pass through the hydraulic oil coarse filter 2, and the larger impurities in the oil product, such as metal fragments and plastic pieces, can be preliminarily filtered; the hose 6 is made of wear-resistant material, and the end of the hose 6 is connected with the hydraulic oil coarse filter 2 through a universal joint, so that the accumulated impurities can be shaken off by rotating the hydraulic oil coarse filter 2 to maintain the filtering efficiency; the hose 6 is connected with the gear oil pump 3 through threads or flanges, which is convenient for disassembly, cleaning and maintenance.

[0044] The gear oil pump 3 is used to provide power for extracting hydraulic oil; considering the demand for efficient operation, the pump body is made of corrosion-resistant material to ensure that it is not easily damaged in a long working environment.

[0045] The oil outlet pipe 4 is made of wear-resistant material, and an oil outlet valve 41 is arranged on the oil outlet pipe 4 to open and close the oil outlet pipe 4.

[0046] The filtered hydraulic oil flows into the oil tank 5 for storage through the oil outlet pipe 4; a liquid level sensor 51 can be arranged on the inner wall of the oil tank 5 to monitor the storage capacity in real time, ensuring safe storage.

[0047] Embodiment 2, please refer to Figure 3 As shown, the embodiment also provides a hydraulic oil recovery device, which is additionally provided with a viscosity meter 8 on the basis of embodiment 1; the viscosity of hydraulic oil directly affects the efficiency and performance of the hydraulic system, and appropriate viscosity can ensure that the hydraulic pump and other components can effectively transmit energy and reduce energy loss.

[0048] Specifically, it comprises hydraulic oil coarse filter 2, hydraulic oil fine filter 1, gear oil pump 3, oil outlet pipe 4 and oil tank 5 arranged in sequence, wherein the hydraulic oil coarse filter 2, the hydraulic oil fine filter 1 and the gear oil pump 3 are connected through the hose 6, the oil outlet pipe 4 is directly connected with the gear oil pump 3, the oil outlet valve 41 is arranged on the oil outlet pipe 4, the branch pipe 7 is arranged in communication on the oil outlet pipe 4 between the oil outlet valve 41 and the gear oil pump 3, the branch pipe 7 is communicated with the viscosity meter 8, the stop valve 71 is arranged on the branch pipe 7, the filtered hydraulic oil is delivered by the oil outlet pipe 4 to the oil tank 5 for storage, and a small part of the hydraulic oil enters the viscosity meter 8 through the branch pipe 7 and the stop valve 71 for viscosity measurement.

[0049] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydraulic oil fine filter characterized by, The application relates to a hydraulic oil fine filter, which comprises a fine filter tank (11), the inside of the fine filter tank (11) is detachably connected with two filter cartridges (12), and the top surface of the fine filter tank (11) is detachably connected with a pressure transmitter (13); the fine filter tank (11) comprises a tank body (111), the top end of the tank body (111) is detachably connected with a top cover (112); an oil inlet blind hole (1111) is arranged on the side wall of the tank body (111), an oil outlet (1121) is arranged on the side wall of the top cover (112), and connecting heads (113) are fixedly sleeved in the oil inlet blind hole (1111) and the oil outlet (1121) respectively; and observation windows (1113) are arranged on the side walls of the tank body (111) and the corresponding positions of the two filter cartridges (12) respectively.

2. The hydraulic oil polishing filter according to claim 1, characterized by The fine filter tank (11) is in the overall cuboid structure, two cylindrical filter cartridge mounting grooves (1112) are arranged side by side in the inside of the tank body (111), the two filter cartridge mounting grooves (1112) are communicated with each other, and the filter cartridges (12) can be respectively accommodated in the filter cartridge mounting grooves (1112); an oil inlet blind hole (1111) is arranged on the front side wall of the tank body (111), and the oil inlet blind hole (1111) and the communication parts between the two filter cartridge mounting grooves (1112) jointly form a T-shaped channel; and the observation windows (1113) are arranged on the left and right side walls of the tank body (111) respectively.

3. The hydraulic oil polishing filter according to claim 2, characterized in that, The filter cartridge (12) is in the cylindrical structure, a circular through hole is arranged in the axial middle part of the filter cartridge (12), and the lower surfaces of the top cover (112) of the fine filter tank (11) are respectively provided with connecting pipes (1123) at positions corresponding to the two filter cartridges (12); and the lower ends of the connecting pipes (1123) are sealingly inserted into the through holes of the corresponding filter cartridges (12).

4. The hydraulic oil polishing filter according to claim 3, characterized in that, An oil outlet channel (1122) is arranged in the inside of the top cover (112) along the horizontal direction, one end of the oil outlet channel (1122) is communicated with the oil outlet (1121), the other end of the oil outlet channel (1122) is a closed end, a through hole is arranged on the top surface of the closed end and communicated with the pressure transmitter (13), and the lower bottom surfaces of the oil outlet channel (1122) are respectively communicated with the upper ends of the two connecting pipes (1123).

5. A hydraulic oil recovery device characterized by comprising: The hydraulic oil fine filter (1) comprises a hydraulic oil coarse filter (2), a gear oil pump (3), an oil outlet pipe (4) and an oil tank (5); and the hydraulic oil recovery device is sequentially arranged in the order of the hydraulic oil coarse filter (2), the hydraulic oil fine filter (1), the gear oil pump (3), the oil outlet pipe (4) and the oil tank (5), wherein the hydraulic oil coarse filter (2), the hydraulic oil fine filter (1) and the gear oil pump (3) are sequentially communicated through hoses (6), the oil outlet pipe (4) and the gear oil pump (3) are communicated with each other, and the tail end of the oil outlet pipe (4) is suspended in the oil tank (5).

6. The hydraulic oil recovery device according to claim 5, characterized by The hydraulic oil coarse filter (2) is rotatably connected with the end of the corresponding hose (6) through a universal connecting head.

7. The hydraulic oil recovery device according to claim 5, wherein An oil outlet valve (41) is arranged on the oil outlet pipe (4).

8. The hydraulic oil recovery device according to claim 7, characterized by A branch pipe (7) is arranged in communication with an oil outlet pipe (4) between the oil outlet valve (41) and the gear oil pump (3), and the end of the branch pipe (7) is in communication with a viscometer (8), and a stop valve (71) is arranged on the branch pipe (7).

9. The hydraulic oil recovery device according to claim 5, characterized by The particle size filtered by the hydraulic oil coarse filter (2) is greater than or equal to 80 microns, and the particle size filtered by the hydraulic oil fine filter (1) is greater than or equal to 20 microns.

10. The hydraulic oil recovery device according to claim 5, characterized by A liquid level sensor (51) is arranged on the inner wall of the oil tank (5).

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