Hydraulic lubricating oil cleaning device and hydraulic system

Abstract

The utility model relates to a hydraulic lubricating oil cleaning device and a hydraulic system, the hydraulic lubricating oil cleaning device comprises an oil return tank, a partition plate is arranged in the oil return tank, the partition plate divides the oil return tank into a first oil return groove and a second oil return groove, the top of a first compartment is communicated with the top of a second compartment, and the oil return tank is provided with an oil inlet at the top of the first oil return groove. An oil outlet is formed in the bottom of the side wall of the second oil return groove of the oil return box; one end of the filtering device is communicated with the first oil return groove, and the other end of the filtering device is communicated with the second oil return groove. The hydraulic lubricating oil cleaning device can pre-filter hydraulic lubricating oil, and impurities in the hydraulic lubricating oil are effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic systems, and particularly to a hydraulic lubricating oil cleaning device and a hydraulic system. Background Art

[0002] Hydraulic lubricating oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy, and it plays roles such as energy transfer, anti-wear, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. For hydraulic lubricating oil, it should first meet the requirements for the liquid viscosity at the working temperature and starting temperature of the hydraulic device. Since the viscosity change of the hydraulic lubricating oil is directly related to hydraulic actions, transmission efficiency, and transmission accuracy, it is also required that the viscosity-temperature performance and shear stability of the oil should meet various requirements put forward for different uses.

[0003] However, during the use of existing hydraulic lubricating oil, impurities are inevitably generated in the hydraulic lubricating oil. The existing common way to deal with impurities in the hydraulic lubricating oil is to install a filter in the return oil pipe. However, the method of installing a filter on the return oil pipe is likely to cause pipeline blockage and affect the return oil effect. Moreover, the hydraulic lubricating oil with impurities is likely to cause problems such as pump wear and jamming and outlet filter blockage through the oil inlet. Utility Model Content

[0004] In view of the above problems, this application provides a hydraulic lubricating oil cleaning device and a hydraulic system, which are used to solve the problem that existing hydraulic lubricating oil is prone to generate impurities during use, and installing a filter on the return oil pipe is likely to cause pipeline blockage and affect the return oil effect.

[0005] To achieve the above object, the inventor provides a hydraulic lubricating oil cleaning device, including:

[0006] A return oil tank, in which a partition is provided. The partition divides the return oil tank into a first return oil groove and a second return oil groove. The tops of the first return oil groove and the second return oil groove are connected. The return oil tank is provided with an oil inlet at the top of the first return oil groove, and the side wall bottom of the second return oil groove of the return oil tank is provided with an oil outlet;

[0007] A filtering device, one end of which is connected to the first return oil groove and the other end is connected to the second return oil groove.

[0008] In some embodiments, it further includes:

[0009] A bowl-shaped filter net, which is arranged on the oil inlet of the return oil tank.

[0010] In some embodiments, the filtering device includes:

[0011] A filter, one end of which is connected to the first return oil groove through an oil pipe;

[0012] A pumping and conveying pump, one end of the pumping and conveying pump is connected to a filter through an oil pipe, and the other end of the pumping and conveying pump is connected to a second oil return tank through an oil pipe.

[0013] In some embodiments, a blockage alarm is provided on the filter.

[0014] In some embodiments, a filter screen is provided at the connection position between the first oil return tank and the second oil return tank.

[0015] In some embodiments, magnets are provided at the bottoms of the first oil return tank and the second oil return tank of the oil return tank.

[0016] In some embodiments, one end of the filtering device is connected to a preset position on the side wall of the first oil return tank, and the other end of the filtering device is connected to the upper part of the side wall of the second oil return tank.

[0017] Another technical solution is also provided. A hydraulic system includes:

[0018] A hydraulic lubricating oil cleaning device, the hydraulic lubricating oil cleaning device is arranged on the oil return pipeline of the hydraulic system, and the hydraulic lubricating oil cleaning device is the above-mentioned hydraulic lubricating oil cleaning device.

[0019] Different from the prior art, in the above technical solution, the hydraulic lubricating oil with impurities is sent into the first oil return tank of the oil return tank through the oil inlet at the top of the oil return tank. After the hydraulic lubricating oil precipitates in the first oil return tank, through the connection position on the partition board, the hydraulic lubricating oil in the first oil return tank overflows into the second oil return tank. At the same time, the hydraulic lubricating oil in the first oil return tank is pumped and filtered by the filtering device and then sent into the second oil return tank. The hydraulic lubricating oil is secondarily precipitated through the first oil return tank and the second oil return tank in the oil return tank. At the same time, after the hydraulic lubricating oil in the first oil return tank is filtered by the filtering device and then sent into the first oil return tank, the hydraulic lubricating oil cleaning device can pre-filter the hydraulic lubricating oil, effectively reducing the impurities in the hydraulic lubricating oil.

[0020] The above relevant description of the utility model content is only an overview of the technical solution of the present application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of the present application, and then can be implemented according to the content recorded in the text of the specification and the drawings. And in order to make the above objects, other objects, features and advantages of the present application more easily understood, the following is described in conjunction with the specific implementation manners and drawings of the present application. Description of the Drawings

[0021] The drawings are only used to show the principles, implementation manners, applications, features and effects of the specific implementation manners and other related contents of the present application, and should not be considered as a limitation to the present application.

[0022] In the accompanying drawings of the specification:

[0023] Figure 1 FIG. is a schematic structural diagram of a hydraulic lubricating oil cleaning device described in the specific embodiment;

[0024] Figure 2 FIG. is a schematic structural diagram of an oil return tank described in the specific embodiment.

[0025] The reference numerals involved in the above-mentioned accompanying drawings are explained as follows:

[0026] 110. Oil return tank

[0027] 111. Oil inlet

[0028] 112. Oil outlet

[0029] 120. Partition board

[0030] 131. Filter

[0031] 132. Pump

[0032] 140. Bowl-shaped filter screen

[0033] 210. First oil return trough

[0034] 220. Second oil return trough Specific Embodiment

[0035] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, the following is described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0036] Referring to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0038] In the description of the present application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.

[0039] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationships between these entities or operations.

[0040] Without further limitations, in the present application, the expressions "comprising", "including", "having", or other similar expressions used in the statements are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the said elements. Thus, a process, method, or product that includes a series of elements may not only include those defined elements, but also include other elements that are not explicitly listed, or elements that are inherent to such a process, method, or product.

[0041] Similar to the understanding in the "Examination Guidelines", in the present application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the recited number; expressions such as "above", "below", "within", etc. are understood to include the recited number. In addition, in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0042] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. It is only for the convenience of describing the specific embodiments of the present application or facilitating the understanding of the reader, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0043] Unless otherwise clearly specified or defined, in the description of the embodiments of the present application, terms such as "installation", "connection", "linkage", "fixation", and "setting" should be understood in a broad sense. For example, the "connection" may be a fixed connection, a detachable connection, or an integral setting; it may be a mechanical connection, an electrical connection, or a communication connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0044] Please refer to Figure 1-2 , this embodiment provides a hydraulic lubricating oil cleaning device, including:

[0045] A return oil tank 110, a partition 120 is provided in the return oil tank 110, the partition 120 divides the return oil tank 110 into a first return oil tank 210 and a second return oil tank 220, the tops of the first return oil tank 210 and the second return oil tank 220 are communicated, an oil inlet 111 is provided at the top of the first return oil tank 210 of the return oil tank 110, and an oil outlet 112 is provided at the bottom of the side wall of the second return oil tank 220 of the return oil tank 110;

[0046] A filtering device, one end of the filtering device is connected to the first return oil tank 210, and the other end of the filtering device is connected to the second return oil tank.

[0047] The hydraulic lubricating oil with impurities is sent into the first return oil tank 210 of the return oil tank 110 through the oil inlet 111 at the top of the return oil tank 110. After the hydraulic lubricating oil precipitates in the first return oil tank 210, through the communicating position on the partition 120, the hydraulic lubricating oil in the first return oil tank 210 overflows into the second return oil tank. At the same time, after the hydraulic lubricating oil in the first return oil tank 210 is pumped and filtered by the filtering device, it is sent into the second return oil tank. The hydraulic lubricating oil is secondarily precipitated through the first return oil tank 210 and the second return oil tank in the return oil tank 110. At the same time, after the hydraulic lubricating oil in the first return oil tank 210 is filtered by the filtering device, it is sent into the first return oil tank 210. The hydraulic lubricating oil cleaning device can pre-filter the hydraulic lubricating oil and effectively reduce the impurities in the hydraulic lubricating oil.

[0048] In some embodiments, it further includes:

[0049] A bowl-shaped filter net 140, the bowl-shaped filter net 140 is arranged on the oil inlet 111 of the return oil tank 110.

[0050] By installing a bowl-shaped filter screen 140 at the oil inlet 111 of the oil return tank 110, large particle impurities in the hydraulic lubricating oil entering the oil return tank 110 through the oil inlet 111 can be filtered by the bowl-shaped filter screen 140, effectively reducing the entry of large particle impurities into the oil return tank 110.

[0051] In some embodiments, the filtering device includes:

[0052] A filter 131, one end of the filter 131 is connected to the first oil return tank 210 through a oil pipe;

[0053] A pumping pump 132, one end of the pumping pump 132 is connected to the filter 131 through a oil pipe, and the other end of the pumping pump 132 is connected to the second oil return tank 220 through a oil pipe.

[0054] The pumping pump 132 extracts the hydraulic lubricating oil in the first oil return tank 210. During the extraction process, the hydraulic lubricating oil will enter the filter 131, and the filter 131 filters the entering hydraulic lubricating oil, which can also effectively remove impurities in the hydraulic lubricating oil.

[0055] In some embodiments, a blockage alarm is provided on the filter 131. By installing a blockage alarm on the filter 131, when the filter element of the filter 131 is blocked, the blockage alarm can detect the blockage of the filter element in time and give an alarm, so that relevant personnel can handle it in time. Among them, the blockage alarm can detect the pressure difference between the inlet and outlet of the filter 131. When the filter element of the filter 131 is blocked, the pressure at the inlet and outlet of the filter 131 generates a pressure difference. When the pressure difference reaches a certain value, it can be determined that the filter 131 is blocked, and then an alarm is given.

[0056] In some embodiments, a filter screen is provided at the connection position between the first oil return tank 210 and the second oil return tank 220. By setting a filter screen at the connection position between the first oil return tank 210 and the second oil return tank 220, the hydraulic lubricating oil overflowing from the first oil return tank 210 into the second oil return tank 220 is filtered, preventing impurities in the hydraulic lubricating oil in the first oil return tank 210 from entering the second oil return tank 220 without being completely precipitated.

[0057] In some embodiments, magnets are provided at the bottoms of the first oil return tank 210 and the second oil return tank 220 of the oil return tank 110. By setting magnets at the bottoms of the first oil return tank 210 and the second oil return tank 220, the fine impurities in the hydraulic lubricating oil are adsorbed by the magnets, further reducing the impurities in the hydraulic lubricating oil.

[0058] In some embodiments, one end of the filtering device is connected to a preset position on the side wall of the first oil return tank 210, and the other end of the filtering device is connected to the upper part of the side wall of the second oil return tank 220.

[0059] By connecting one end of the filtering device to a preset position on the side wall of the first oil return tank 210, and the preset position is at a relatively lower position of the first oil return tank 210. On the one hand, the filtering device can filter the hydraulic lubricating oil with more impurities in the first oil return tank 210, and on the other hand, it can ensure that the hydraulic lubricating oil with fewer impurities enters the second oil return tank 220.

[0060] By making an oil return tank 110 for sedimentation and filtration of impurities, and installing a bowl-shaped filter net 140 before the oil return pipe enters the oil return tank 110, the entry of large particle impurities can be effectively reduced. A partition 120 is added to the oil return tank 110 to divide the oil return tank 110 into a first oil return tank 210 and a second oil return tank 220, allowing the oil overflow valve to enter the next compartment to form a secondary sedimentation tank, and a magnet is placed in the sedimentation tank to adsorb fine particle impurities. At the same time, an external set of pumping pump 132 and filter 131 are formed to constitute a second-stage filtering device. The oil is pumped from the first oil return tank of the oil return tank 110, filtered and then returned to the second oil return tank. And a blockage alarm device is installed on the filter 131 to timely detect the blockage of the filter element. The oil in the oil return tank passes through the bowl-shaped filter net of the first stage, the filter element oil filter of the second-stage filtering device and the adsorption of the magnet, and then returns to the main fuel tank.

[0061] In another embodiment, a hydraulic system includes:

[0062] A hydraulic lubricating oil cleaning device, the hydraulic lubricating oil cleaning device is arranged on the oil return pipeline of the hydraulic system, the hydraulic lubricating oil cleaning device is the above-mentioned hydraulic lubricating oil cleaning device, and the hydraulic lubricating oil cleaning device includes:

[0063] An oil return tank 110, a partition 120 is arranged in the oil return tank 110, the partition 120 divides the oil return tank 110 into a first oil return tank 210 and a second oil return tank 220, the tops of the first oil return tank 210 and the second oil return tank 220 are communicated, an oil inlet 111 is arranged at the top of the first oil return tank 210 of the oil return tank 110, and an oil outlet 112 is arranged at the bottom of the side wall of the second oil return tank 220 of the oil return tank 110;

[0064] A filtering device, one end of the filtering device is connected to the first oil return tank 210, and the other end of the filtering device is connected to the second oil return tank 220.

[0065] The hydraulic lubricating oil with impurities is sent into the first oil return tank 210 of the oil return tank 110 through the oil inlet 111 at the top of the oil return tank 110. After the hydraulic lubricating oil precipitates in the first oil return tank 210, through the communication position on the partition plate 120, the hydraulic lubricating oil in the first oil return tank 210 overflows into the second oil return tank 220. At the same time, after the hydraulic lubricating oil in the first oil return tank 210 is extracted and filtered by the filtering device, it is sent into the second oil return tank 220. The hydraulic lubricating oil is secondarily precipitated through the first oil return tank 210 and the second oil return tank 220 in the oil return tank 110. At the same time, after the hydraulic lubricating oil in the first oil return tank 210 is filtered by the filtering device, it is sent into the first oil return tank 210. The hydraulic lubricating oil cleaning device can pre-filter the hydraulic lubricating oil, effectively reducing the impurities in the hydraulic lubricating oil.

[0066] By adding a hydraulic lubricating oil cleaning device to the oil return pipeline of the hydraulic system to pre-filter the hydraulic lubricating oil, the entry of particulate impurities into the oil return pipeline can be effectively reduced, and at the same time, the service life of the main filter and the main pump on the oil return pipeline can be extended.

[0067] In some embodiments, the hydraulic lubricating oil cleaning device further includes:

[0068] A bowl-shaped filter screen 140, and the bowl-shaped filter screen 140 is arranged on the oil inlet 111 of the oil return tank 110.

[0069] By installing a bowl-shaped filter screen 140 at the oil inlet 111 of the oil return tank 110, the large particulate impurities in the hydraulic lubricating oil entering the oil return tank 110 through the oil inlet 111 are filtered by the bowl-shaped filter screen 140, which can effectively reduce the entry of large particulate impurities into the oil return tank 110.

[0070] In some embodiments, the filtering device includes:

[0071] A filter 131, one end of the filter 131 is connected to the first oil return tank 210 through a oil pipe;

[0072] A pumping pump 132, one end of the pumping pump 132 is connected to the filter 131 through a oil pipe, and the other end of the pumping pump 132 is connected to the second oil return tank 220 through a oil pipe.

[0073] The pumping pump 132 extracts the hydraulic lubricating oil in the first oil return tank 210. During the extraction process, the hydraulic lubricating oil will enter the filter 131, and the filter 131 filters the entering hydraulic lubricating oil, which can also effectively remove the impurities in the hydraulic lubricating oil.

[0074] In some embodiments, a clogging alarm is provided on the filter 131. By installing a clogging alarm on the filter 131, when the filter element of the filter 131 becomes clogged, the clogging alarm can promptly detect the clogging of the filter element and give an alarm, enabling relevant personnel to handle it in a timely manner. Among them, the clogging alarm can detect the pressure difference between the inlet and outlet of the filter 131. When the filter element of the filter 131 is clogged, a pressure difference is generated between the inlet and outlet of the filter 131. When the pressure difference reaches a certain value, it can be determined that the filter 131 is clogged, and then an alarm is given.

[0075] In some embodiments, a filter screen is provided at the connecting position of the first oil return tank 210 and the second oil return tank 220. By setting a filter screen at the connecting position of the first oil return tank 210 and the second oil return tank 220, the hydraulic lubricating oil overflowing from the first oil return tank 210 into the second oil return tank 220 is filtered, preventing impurities in the hydraulic lubricating oil in the first oil return tank 210 from entering the second oil return tank 220 without being completely precipitated.

[0076] In some embodiments, magnets are provided at the bottoms of the first oil return tank 210 and the second oil return tank 220 of the oil return tank 110. By setting magnets at the bottoms of the first oil return tank 210 and the second oil return tank 220, the magnets adsorb fine impurities in the hydraulic lubricating oil, further reducing the impurities in the hydraulic lubricating oil.

[0077] In some embodiments, one end of the filtering device is connected to a preset position on the side wall of the first oil return tank 210, and the other end of the filtering device is connected to the upper part of the side wall of the second oil return tank 220.

[0078] By connecting one end of the filtering device to a preset position on the side wall of the first oil return tank 210, and the preset position is at a relatively lower position in the first oil return tank 210. On the one hand, the filtering device can filter the hydraulic lubricating oil with more impurities in the first oil return tank 210. On the other hand, it ensures that the hydraulic lubricating oil with fewer impurities enters the second oil return tank 220.

[0079] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions generated by equivalent structure or equivalent process substitution or modification based on the essential concept of this application, using the content recorded in the text and drawings of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A hydraulic lubricating oil cleaning device, characterized in that: include: An oil return tank, wherein a partition is provided inside the oil return tank, and the partition divides the oil return tank into a first oil return tank and a second oil return tank, the tops of the first oil return tank and the second oil return tank are connected, the oil return tank is provided with an oil inlet at the top of the first oil return tank, and an oil outlet is provided at the bottom of the side wall of the second oil return tank of the oil return tank; A filter device, one end of which is connected to the first oil return tank, and the other end of which is connected to the second oil return tank.

2. The hydraulic lubricating oil cleaning device according to claim 1, characterized in that: Also includes: A bowl-shaped filter screen is arranged on the oil inlet of the oil return tank.

3. The hydraulic lubricating oil cleaning device according to claim 1, characterized in that: The filtering device comprises: A filter, one end of which is connected to the first oil return tank through an oil pipe; A pumping pump, one end of which is connected to the filter through an oil pipe, and the other end of which is connected to the second oil return tank through an oil pipe.

4. The hydraulic lubricating oil cleaning device according to claim 3, characterized in that: The filter is provided with a clogging alarm.

5. The hydraulic lubricating oil cleaning device according to claim 1, characterized in that: A filter screen is provided at the communicating position between the first oil return groove and the second oil return groove.

6. The hydraulic lubricating oil cleaning device according to claim 1, characterized in that: The bottoms of the first oil return groove and the second oil return groove of the oil return box are both provided with magnets.

7. The hydraulic lubricating oil cleaning device according to claim 1, characterized in that: One end of the filter device is connected to a preset position of the side wall of the first oil return groove, and the other end of the filter device is connected to an upper portion of the side wall of the second oil return groove.

8. A hydraulic system, characterized in that: include: A hydraulic lubricating oil cleaning device, wherein the hydraulic lubricating oil cleaning device is arranged on an oil return pipeline of a hydraulic system, and the hydraulic lubricating oil cleaning device is the hydraulic lubricating oil cleaning device according to any one of claims 1 to 7.

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