CN206642882U - Filter for tank drainback - Google Patents

Abstract

The utility model discloses a filter device for returning oil from a fuel tank, comprising: a filter barrel, the filter barrel includes an upper barrel end, a lower barrel end and a barrel bottom, the upper barrel end is a cylindrical convex structure, and The upper end is provided with an oil inlet, the bottom of the barrel is located at the lower part of the upper barrel end, and the center of the barrel bottom is provided with an interface suitable for installing magnetic components, the lower barrel end is a cylindrical open structure, and the bottom of the barrel is located Below, and the inner wall of the lower barrel end is provided with internal threads; magnetic components, the magnetic components are installed at the interface; filter screens, the filter screens are installed at the internal threads, and include the first filter screen and the second Two filter screens, the filtration accuracy of the first filter screen is smaller than that of the second filter screen; a cleaning bucket, the cleaning bucket is located at the lower end of the shown filter bucket. The device can clean up the impurities in the oil, and is convenient for disassembly and installation.

Description

Filtration device for oil tank return

technical field

The utility model relates to an auxiliary device for production of an oil tank, in particular to a filter device for returning oil from the oil tank.

Background technique

Oil tank return oil is generally used in hydraulic control machines. After the oil enters the machine, it will be polluted with the operation of the machine and form impurities. The impurities are mainly divided into two categories. One is the iron filings formed by the machine itself. When encountering magnets, they are adsorbable (hereinafter referred to as adsorbable impurities), and the other type is dust-like impurities from the outside of the machine. This type of impurities is not adsorbable when encountering magnets (hereinafter referred to as non-absorptive impurities). The filter device for the oil return of the fuel tank is mainly to add magnetite to the filter device. The magnetite mainly absorbs iron filings in the oil, and cannot filter non-iron filing impurities, resulting in the oil in the fuel tank after filtration is still not up to standard. It will cause damage to the machine, and the filter itself is adsorbable, which will make it difficult to take out the magnet.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the utility model provides a filter device for returning oil from the oil tank. The device can clean impurities in the oil, and is detachable, which is convenient for installation and cleaning of impurities in the filter device.

In order to achieve the above purpose, the utility model provides a filter device for oil tank return, including: a filter barrel, the filter barrel includes an upper barrel end, a lower barrel end and a barrel bottom, and the upper barrel end is a cylindrical convex structure , and its upper end is provided with an oil inlet, the bottom of the barrel is located at the lower part of the upper end of the barrel, and the center of the bottom of the barrel is provided with an interface, the lower end of the barrel is a cylindrical open structure, located below the bottom of the barrel, and the lower Internal threads are provided on the inner wall of the barrel end;

A magnetic component, the magnetic component is installed at the internal thread; a filter screen, the filter screen is installed at the lower end of the filter barrel, and includes a first filter screen and a second filter screen, the filter screen of the first filter screen The filtering accuracy is smaller than that of the second filter screen; the cleaning barrel is located at the lower end of the filtering barrel shown.

In this technical scheme, the oil is pumped into the filter device, and the oil with adsorbable impurities and non-adsorbable impurities can be filtered through the filtering effect of the magnetic parts and the filter net to meet the machine operation standard, and the whole The filter device is detachable, which is convenient for installation and cleaning of impurities in the filter device.

In addition, according to the filter device for oil tank return of the present invention, it can also have the following technical features:

Preferably, a plurality of through holes are provided at the bottom of the barrel.

Preferably, the internal thread has a stepped structure, and the diameter of the internal thread at the upper end is smaller than the diameter of the internal thread at the lower end.

Further, the filter screen is in the shape of a ring, and a fixing ring is provided on the outer edge, and an external thread is provided on the fixing ring.

Preferably, the filter bucket is a plastic part.

Further, the cleaning bucket has a frustum-shaped structure, and the cross-sectional diameter of the upper end is larger than the cross-sectional diameter of the lower end.

Further, a sealing ring is also included, and the sealing ring is located between the filter bucket and the cleaning bucket.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is a schematic structural diagram of a filter device used for oil return from an oil tank;

Fig. 2 is a sectional view along the A-A direction;

Reference signs:

filter barrel 1; upper barrel end 11; lower barrel end 12; barrel bottom 13; liquid inlet 14;

Magnetic part 2;

Filter 3; first filter 31; second filter 32;

Cleaning barrel 4; liquid outlet 41;

sealing ring 5.

detailed description

Embodiments of the present invention are described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but not to limit the present utility model.

In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "upper end", "lower" and "lower end" are only for the convenience of describing the utility model and simplifying the description, and It is not intended to indicate or imply that the devices or elements shown must have a particular orientation, be constructed or operate in a particular orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature pass through the middle. Media indirect contact.

In this utility model, unless otherwise specified and limited, terms such as "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Forming; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

As shown in FIG. 1 and FIG. 2 , the filter device for returning oil from a fuel tank according to an embodiment of the present invention includes: a filter bucket 1 , a magnetic component 2 , a filter screen 3 and a cleaning bucket 4 .

The filter barrel 1, the filter barrel 1 includes an upper barrel end 11, a lower barrel end 12 and a barrel bottom 13, the upper barrel end 11 is a cylindrical convex structure, and its upper end is provided with an oil inlet, and the barrel bottom 13 is located at the upper barrel end 11 and the center of the bottom 13 of the barrel is provided with an interface suitable for installing the magnetic component 2, the lower barrel end 12 is a cylindrical open structure, located below the bottom of the barrel 13, and the inner wall of the lower barrel end 12 is provided with There are internal threads, and the upper barrel end 11 is set as a cylindrical convex shape, and the opening is large enough to facilitate the removal of the magnetic component located at the center of the barrel bottom 13. The interface at the center of the barrel bottom 13 can be a threaded interface, and the magnetic component 2 The lower end is provided with an external thread, which can be screwed into the threaded interface. Of course, the present invention is not limited thereto, and the magnetic component 2 can also be fixed to the bottom 13 of the bucket through a buckle connection.

The magnetic part 2 is installed in the filter barrel 1, and the top of the filter barrel 1 is provided with a liquid inlet 14, and an oil pump (not shown) is provided at the liquid inlet 14, and the oil pump (not shown) ) pump the oil that needs to be filtered in from the liquid inlet 14, because the magnetic component 2 is installed in the filter barrel 1, and then the adsorbable impurities in the oil can be adsorbed, so as to achieve the preliminary filtration of the oil effect.

Filter screen 3 is installed in the lower end of filter barrel 1, and comprises first filter screen 31 and second filter screen 32, and the filtration accuracy of first filter screen 31 will be less than the filtration accuracy of second filter screen 32, and first filter screen 31 Located on the upper end of the second filter, two filter screens 3 are arranged at the lower end of the filter barrel 1, which can filter the non-absorptive impurities in the oil, and those adsorbable impurities that are not adsorbed by the magnetic parts 2 can also be filtered filter screen 3 to filter out. It should be pointed out that the filtration accuracy of the first filter 31 and the second filter 32 is high enough to filter out impurities in the oil, so that the cleanliness of the oil can meet the use standard.

Clean bucket 4, the clean bucket 4 is located at the lower end of the filter bucket 1, the oil is filtered through the double layer of the magnetic component 2 and the filter screen 3, the oil will enter the clean bucket 4, and the lower end of the clean bucket 4 is provided with an outlet A liquid port 41 is provided with a high-pressure pump (not shown in the figure) at the liquid outlet 41 of the oil, and the filtered oil is re-delivered to the machine.

Use the oil pump to pump the oil into the filter device. The oil containing impurities first enters the upper barrel end 11, and the magnetic component 2 in the upper barrel end 11 will carry out preliminary filtration of the oil, that is, the iron filings in the oil, etc. Adsorptive impurities can be adsorbed, and then the oil enters the filter screen 3 of the lower barrel end 12, and the non-adsorptive impurities in the oil impurities are filtered by the two-layer filter screen 3, so that the adsorptive impurities and The oil of non-absorbent impurities is filtered clean to meet the machine operation standard, and then the oil is delivered to the machine. The whole filter device is detachable, which is convenient for installation and cleaning of impurities in the filter device.

In some embodiments of the present utility model, as shown in Figure 2, a plurality of through holes are provided at the bottom 13 of the barrel, so that the oil can flow to the filter screen 3 at the end of the barrel 12 through the adsorption of the magnetic component 2, and then The next step of filtering non-absorptive impurities is carried out, and the flow of oil can be increased by arranging multiple through holes.

In some embodiments of the present invention, as shown in Figure 1, the internal thread is a stepped structure, and the diameter of the upper internal thread is smaller than the diameter of the lower internal thread, so that the disassembly and cleaning of the filter screen 3 can be facilitated.

In some embodiments of the present utility model, as shown in Figure 1, the filter screen 3 is a ring-shaped structure, and a fixed ring is provided on the outer edge, and an external thread is provided on the fixed ring, and the external thread is connected to the lower barrel end 12. Specifically, the filter screen 3 is fixed with a fixed ring, and the fixed ring is provided with threads, and the diameter of the first filter screen 31 is smaller than the diameter of the second filter screen 32, so that the first filter screen 31 is convenient With the installation and disassembly of the second filter screen 32 for cleaning.

In one embodiment of the present invention, the filter barrel 1 is a plastic part. Since the magnetic part 2 is magnetic, the filter barrel 1 is a plastic part and has no absorbability, which can facilitate the disassembly of the magnetic part 2 .

As shown in FIG. 1 , the cleaning barrel 4 has a frustum-shaped structure, and the cross-sectional diameter of the upper end is larger than the cross-sectional diameter of the lower end, which can reduce the pressure on the bottom 13 of the barrel after the oil falls into the cleaning barrel 4 . It should be pointed out that the outer diameter of the upper barrel end 11 is greater than the outer diameter of the lower barrel end 12, and the outer diameter of the upper end of the cleaning barrel 4 is greater than the outer diameter of the lower barrel end 4 and less than the outer diameter of the upper barrel end 11, so that the filter Bucket 1 ferrules on the cleaning bucket 4, an internal thread is provided at the upper port of the cleaning bucket 4, and an external thread is provided at the bottom of the lower barrel end 12, and the internal thread and the external thread cooperate with each other to make the cleaning bucket 4 and the filter bucket 1 to connect.

In some embodiments of the present utility model, as shown in Fig. 1 , a sealing ring 5 is also included, and the sealing ring 5 is located between the filter bucket 1 and the cleaning bucket 4, so that the filter bucket 1 and the cleaning bucket can be well ensured. 4 to prevent the oil from leaking from the connection between the filter barrel 1 and the cleaning barrel 4.

In the description of the specification of the present invention, reference to the terms "one embodiment", "some embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention. In at least one embodiment or example. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (7)

1. A filter device for oil tank return, characterized in that it comprises: A filter barrel (1), the filter barrel (1) includes an upper barrel end (11), a lower barrel end (12) and a barrel bottom (13), the upper barrel end (11) is a cylindrical convex structure, and The upper end is provided with an oil inlet, the bottom of the barrel (13) is located at the lower part of the upper barrel end (11), and an interface is provided at the center of the barrel bottom (13), and the lower barrel end (12) is a cylindrical open structure , located below the barrel bottom (13), and the inner wall of the lower barrel end (12) is provided with internal threads; A magnetic component (2), the magnetic component (2) is installed at the interface; Filter screen (3), described filter screen (3) is installed in described internal thread place, and comprises first filter screen (31) and second filter screen (32), the filtration of described first filter screen (31) Accuracy is less than the filtration accuracy of the second filter screen (32); A cleaning bucket (4), the cleaning bucket (4) is located at the lower end of the filter bucket (1). 2. The filter device for oil return from the fuel tank according to claim 1, characterized in that, the bottom of the barrel (13) is provided with a plurality of through holes. 3 . The filter device for oil return from an oil tank according to claim 1 , wherein the internal thread has a stepped structure, and the diameter of the internal thread at the upper end is smaller than the diameter of the internal thread at the lower end. 4 . 4. The filter device for oil return from the fuel tank according to claim 3, characterized in that, the filter screen (3) is an annular structure, and the outer edge is provided with a fixed ring, and the fixed ring is provided with With external thread. 5. The filter device for oil return from an oil tank according to claim 1, characterized in that the filter barrel (1) is a plastic part. 6 . The filter device for oil return from a fuel tank according to claim 1 , wherein the cleaning bucket ( 4 ) is a circular truncated structure, and the cross-sectional diameter of the upper end is larger than the cross-sectional diameter of the lower end. 7 . 7. The filter device for oil tank return according to claim 1, characterized in that, it also includes a sealing ring (5), and the sealing ring (5) is located between the filter barrel (1) and the cleaning barrel (4) between.