CN116688570A - Oil dehydration filter core and dewatering device - Google Patents

Abstract

The invention relates to the technical field of oil-liquid separation, and discloses an oil dehydration filter element and a dehydration device. The oil dehydration filter element includes a shell, and the shell includes an oil inlet, an oil outlet, and a drain port; the coalescing filter element is arranged on Inside the casing, the filter front side of the coalescing filter element is connected to the oil inlet; the separation filter element is arranged in the casing, the filter front side of the separation filter element is connected to the filter rear side of the coalescence filter element, and the filter front side of the separation filter element is connected to the drain The outlet is connected, the rear side of the separation filter element is connected to the oil outlet, and the separation filter element and the coalescing filter element are distributed in the axial direction. The coalescing filter element and the separation filter element of the present invention are protected, convenient to carry and install, and have a small overall volume to reduce space occupation.

Description

Oil dehydration filter element and dehydration device

technical field

The invention relates to the technical field of oil-liquid separation, in particular to an oil dehydration filter element and a dehydration device.

Background technique

At present, many equipment need to use oil. For example, in electric power oil, the oil can lubricate, cool and insulate electric equipment. In order to achieve high-efficiency lubrication, cooling and insulation performance, the quality of oil for electric power needs to be maintained at a high level. In this regard, through the coalescence separation technology, the surface wettability of the filter material in the coalescing filter element and the lipophilicity and hydrophobicity of the separation filter element are used to realize the separation of the oil and water phases in the oil, so as to obtain higher quality oil.

However, the coalescing filter element and the separation filter element in the related art are exposed to the outside, and there are risks such as bumping, deformation, scratching and damage during handling and installation, and there are problems such as relatively large volume and large space occupation.

Contents of the invention

The present invention is made based on the inventor's discovery and understanding of the following facts and problems: In the related art, the coalescing filter element and the separation filter element are easy to be knocked and damaged during transportation and installation, and occupy a large space.

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the present invention proposes an oil product dehydration filter element and a dehydration device. By arranging the coalescing filter element and the separation filter element inside the casing and arranging them in the axial direction of the casing, not only the coalescence filter element and the separation filter element are protected, but also convenient Transportation and installation, and the overall volume of the axial layout is small, reducing space occupation.

The oil dehydration filter element of the present invention comprises: a casing, the casing includes an oil inlet, an oil outlet, and a drain; a coalescing filter element, the coalescing filter element is arranged in the casing; The side communicates with the oil inlet; the separation filter element, the separation filter element is arranged in the housing, the filter front side of the separation filter element communicates with the filter rear side of the coalescing filter element, and the separation filter element The filter front side communicates with the drain port, the filter rear side of the separation filter element communicates with the oil outlet, and the separation filter element and the coalescing filter element are distributed in the axial direction.

Optionally, the coalescing filter element and the separating filter element are fixedly connected by a connecting piece, the gap between the coalescing filter element and the housing forms a first oil flow channel, and the separating filter element and the The gap between the housings constitutes a second oil circulation channel, and the second oil circulation channel communicates with the first oil circulation channel, wherein the second oil circulation channel is located at the first oil circulation channel. downstream of the channel.

Optionally, the coalescing filter element includes a first inner cavity communicated with the oil inlet, and the separation filter element includes a second inner cavity communicated with the oil outlet; the connecting member includes a first inner connection part and a second inner connecting part, the first inner connecting part is embedded and fixed in the first inner cavity, and the second inner connecting part is embedded and fixed in the second inner cavity; and/or, the The connecting piece includes a first external connection part and a second external connection part, the first external connection part is nested and fixed on the outside of the coalescing filter core, and the second external connecting part is nested and fixed on the outside of the separation filter core.

Optionally, the coalescing filter element includes a coalescing inner support frame and a coalescing outer support frame, the coalescing outer support frame is sleeved on the outside of the coalescing inner support frame, and the coalescing inner support frame is provided with A plurality of coalescing inner through holes communicated with the oil inlet, coalescing medium is filled between the coalescing outer support frame and the coalescing inner support frame, and the coalescing outer support frame is provided with multiple a coalescing outer through hole communicating with the first oil flow passage.

Optionally, the separation filter element includes a separation inner support frame and a separation outer support frame, the separation outer support frame is sleeved on the separation inner support frame, and the separation inner support frame is provided with a plurality of The separation inner filter hole connected with the mouth, the separation medium is filled between the separation outer support frame and the separation inner support frame, and the separation outer support frame is provided with a plurality of communication holes communicating with the second oil flow channel. Separate the outer vias.

Optionally, the housing includes a shell body, an upper cover and a lower cover, the upper cover includes a first upper connection part, a second upper connection part and a third upper connection part, and the first upper connection part is embedded and fixed on In the coalescence inner support frame or in the coalescence outer support frame, the second upper connection part is nested and fixed on the outer side of the coalescence outer support frame, and the third upper connection part is nested and fixed on the coalescence outer support frame. The outer upper part of the shell body, the oil inlet is arranged on the upper cover; the lower cover includes a first lower connection part, a second lower connection part and a third lower connection part, and the first lower connection part is embedded and fixed In the separated inner support frame or the separated outer support frame, the second lower connecting part is nested and fixed on the outer side of the separated outer support frame, and the third lower connecting part is nested and fixed on the shell On the lower part of the outer side of the body, the oil outlet and the drain are arranged on the lower cover.

Optionally, the oil outlet includes a first tapered surface, and the bottom of the separated inner support frame is provided with a second tapered surface adapted to the first tapered surface, and the second tapered surface against the first tapered surface.

Optionally, the coalescing medium includes multiple layers of fibers, the fibers of the inner layer of the layers of fibers having a fineness less than the fibers of the outer layer.

Optionally, the coalescing filter element is coaxially arranged with the separation filter element, the length of the coalescing medium in the coalescing filter element is L1, and the length of the separation medium in the separation filter element is L2, wherein L1: L2=1:1~1:2.

The dehydration device of the present invention comprises: a tank body, which is provided with an oil liquid delivery port, an oil liquid discharge port and a water discharge port; The gap between the shell and the tank forms an oil delivery channel, the oil delivery channel communicates with the oil delivery port and the oil inlet, and the oil discharge port communicates with the oil outlet , the water discharge port communicates with the water discharge port.

The oil product dehydration filter element and dehydration device of the present invention have the following technical effects:

(1) By arranging the coalescing filter element and the separating filter element inside the housing, and the coalescing filter element and the separating filter element are arranged in the axial direction of the housing, not only the coalescing filter element and the separating filter element are effectively protected, it is convenient for handling and installation, but also The vertical layout makes the overall volume of the oil dehydration filter element smaller, which can reduce the space occupation.

(2) The coalescing filter element and the separation filter element are fixedly connected by connectors to form an axially arranged integrated filter element structure, so that the oil can complete the two processes of coalescence and separation at one time, and the coalesced water droplets are under the action of gravity , quickly settle to the vicinity of the drain, improve the efficiency of the coalescing filter material, and achieve the purpose of quickly breaking away from the water in the oil.

(3) Through the integrated structure of the shell, the coalescing filter element and the separation filter element, such an integrated structure can be installed in place at one time, reducing the difficulty of installing the oil dehydration filter element.

(4) The coalescing filter element and the separation filter element are sealed and fixed in the shell body through the upper cover and the lower cover respectively, which is convenient for installation, and because of the sealed connection, it can also ensure that the oil is always in a state of full oil inside the shell, no need to carry out Exhaust operation; this design reduces the size of the coalescing filter device, simplifies the structure, and saves costs.

(5) The coalescing filter element and the separation filter element are sealed and fixed on the housing body in a nested manner through the upper cover and the lower cover to form an integrated structure. The overall structure is more compact, the overall volume is smaller, and the space occupation is reduced.

(6) The gravitational effect of the integrated coalescing filter element can be used to separate the filter element to make the second conical surface matched with the first conical surface resist to form surface contact, and the seal between the oil outlet of the lower cover and the bottom of the inner support frame is reliable. sex.

(7) When the oil passes through the coalescing filter element, it flows from the inside to the outside. The filtration precision near the inner layer is small, and the fiber filtration diameter is larger, which is coarse fiber. First filter the impurities with larger particles in the oil, and filter near the outer layer. High precision, small filter diameter, fine fibers, and finally filter the impurities of smaller particles in the oil, thereby improving the ability of the coalescing filter element to filter impurities in the oil, and reducing the impact of impurities in the oil on the demulsification layer and coalescence of the coalescing filter element The knot layer and the pollution of the lipophilic and hydrophobic layer of the separation filter element increase the effective contact area between the water and the filter material and increase the dehydration efficiency.

(8) The coaxial layout of the coalescing filter element and the separation filter element is adopted to simplify the filter structure and reduce the filter volume; by setting different sizes (length ratios) of the coalescing filter element and the separation filter element, the coalescence filter material and the The effective area of the separation filter material meets a specific ratio to ensure high dehydration efficiency.

Description of drawings

Fig. 1 is a schematic structural view of an oil dehydration filter element proposed according to some embodiments of the present invention;

Fig. 2 is a schematic structural diagram of a dehydration device proposed according to some embodiments of the present invention.

Reference signs:

Housing 10, housing body 11, upper cover 12, oil inlet 121, first upper connecting portion 122, second upper connecting portion 123 and third upper connecting portion 124, first upper connecting portion 122, second upper connecting portion 123 , the third upper connection part 124, the lower cover 13, the oil outlet 131, the drain port 132, the first lower connection part 133, the second lower connection part 134, and the third lower connection part 135;

Coalescing filter element 20, coalescing inner support frame 21, coalescing outer support frame 22, coalescing medium 23;

Separate filter element 30, separate inner support frame 31, separate outer support frame 32, and separate medium 33;

Connecting piece 40, first inner connecting part 41, second inner connecting part 42, first outer connecting part 43, second outer connecting part 44;

Tank body 50, oil delivery port 51, oil discharge port 52, water discharge port 53;

The first oil circulation channel 101, the second oil circulation channel 102;

Oil delivery channel 501;

Axial direction Z;

radial direction R;

Central axis L.

Detailed ways

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The invention provides an oil product dehydration filter element and a dehydration device. By arranging the coalescing filter element and the separation filter element inside the casing and arranging them in the axial direction of the casing, not only the coalescence filter element and the separation filter element are protected, but also convenient for handling and installation , and the overall volume of the axial layout of the two is small, reducing space occupation.

The oil dehydration filter element of the present invention is suitable for fuel oil, such as gasoline, kerosene, diesel oil, liquefied petroleum gas, etc.; it is also suitable for equipment oil, such as power equipment lubricating oil, cooling oil, etc. After the oil to be filtered passes through the oil dehydration filter element, the tiny water droplets in the dissolved water in the oil coalesce into larger free water droplets, and then pass through the separation filter element, because the separation filter element has good lipophilic and hydrophobic properties, so as to further separate The water in the oil liquid will eventually get oil with higher oil quality.

Referring to FIG. 1 , FIG. 1 is a schematic structural view of an oil dehydration filter element according to some embodiments of the present invention. An embodiment of the present invention provides an oil dehydration filter element, including: a housing 10 , a coalescing filter element 20 and a separation filter element 30 .

The casing 10 includes an oil inlet 121, an oil outlet 131 and a drain 132; the coalescing filter element 20 is arranged in the casing 10, and the filter front side of the coalescing filter element 20 communicates with the oil inlet 121; the separation filter element 30 is arranged in the casing 10 The filter front side of the separation filter element 30 communicates with the filter rear side of the coalescing filter element 20, the filter front side of the separation filter element 30 communicates with the drain port 132, the filter rear side of the separation filter element 30 communicates with the oil outlet 131, and the separation filter element 30 and The coalescing cartridges 20 are distributed in the axial direction Z.

It should be noted that the side where the oil enters the coalescing filter 20 is the front side of the coalescing filter 20 , and the side where the oil flows out after being filtered by the coalescing filter 20 is the rear side of the coalescing filter 20 . Similarly, the side where the oil enters the separation filter 30 is the front side of the separation filter 30 , and the side where the oil flows out after being filtered by the separation filter 30 is the rear side of the separation filter 30 .

In one example, the oil enters from the inner side of the coalescing filter element 20 in the radial direction R, and flows out from the outer side of the coalescing filter element 20 in the radial direction R, that is, when the oil passes through the coalescing filter element 20, it goes in and out, so that the coalescing filter element 20 The inner side in the radial direction R is the filter front side, and the outer side of the coalescing filter element 20 in the radial direction R is the filter rear side. Similarly, the oil enters from the outside of the separation filter element 30 in the radial direction R, and flows out from the inside of the separation filter element 30 in the radial direction R, that is, when the oil passes through the separation filter element 30, it goes in and out, so that the separation filter element 30 in the radial direction The inner side of R is the filter front side, and the outer side of the separation filter element 30 in the radial direction R is the filter rear side.

In another example, the oil enters from the outer side of the coalescing filter element 20 in the radial direction R, and flows out from the inner side of the coalescing filter element 20 in the radial direction R, that is, when the oil passes through the coalescing filter element 20, it goes in and out, so that the coalescence The outer side of the coalescing filter element 20 in the radial direction R is the filter front side, and the inner side of the coalescing filter element 20 in the radial direction R is the filter rear side. Similarly, the oil enters from the inside of the separation filter element 30 in the radial direction R, and flows out from the outside of the separation filter element 30 in the radial direction R, that is, when the oil passes through the separation filter element 30, it goes in and out, so that the separation filter element 30 in the radial direction R The inner side of the separation filter element 30 is the filter front side, and the outer side of the separation filter element 30 in the radial direction R is the filter rear side.

It should also be noted that the axial direction Z refers to the longitudinal direction of the casing 10 . Usually, when the oil product dehydration filter element device is vertically arranged, the axial direction Z of the casing 10 is the up-down direction. For example, the housing 10 has a long cylindrical structure with a central axis L, and the axial direction Z of the housing 10 is the extension direction of the central axis L. As shown in FIG.

The oil flowing in from the oil inlet 121 enters the coalescing filter element 20 from the front side of the coalescing filter element 20, and after being filtered by the coalescing filter element 20, the extremely small dissolved water droplets are coalesced into larger free water droplets , and flow out from the filter side of the coalescing filter element 20, and then enter the separation filter element 30 from the filter front side of the separation filter element 30 for further filtration. Since the separation filter element 30 has good lipophilic and hydrophobic properties, oil and water are separated. The water that goes out is discharged through the drain port 132, and the separated oil with higher oil quality is discharged from the oil outlet 131.

Usually, the oil dehydration filter device is arranged vertically. In the related art, the wound oil dehydration filter element has a complex structure, and the filter element is exposed outside. It is easy to be bumped and scratched, resulting in functional failure. It is difficult to install, and the coalescing filter element and the separation filter element are arranged radially. , takes up a lot of space. For this reason, the oil dehydration filter element of the embodiment of the present invention, by arranging the coalescing filter element and the separation filter element inside the casing, and the coalescence filter element and the separation filter element are arranged in the axial direction of the casing, not only the coalescence filter element and the separation filter element are obtained Effective protection, more convenient handling and installation, and the axial layout makes the overall volume of the oil dehydration filter element smaller, which can reduce space occupation.

As an example, the oil outlet 131 and the drain 132 of the housing 10 are located below the oil inlet 121 . For example, the oil outlet 131 is located at the top middle of the housing 10 , the oil inlet 121 is located at the bottom middle of the housing 10 , and the drain 132 is located at the bottom side of the housing 10 . In addition, the casing 10 may be made of a material with certain mechanical strength, so as to form a good protection effect on the coalescence filter element 20 and the separation filter element 30 inside it. For example, the material of the housing 10 may be hard metal or hard resin.

In some embodiments, the coalescing filter element 20 and the separating filter element 30 are fixedly connected by a connecting piece 40, the gap between the coalescing filter element 20 and the casing 10 constitutes the first oil flow channel 101, and the gap between the separating filter element 30 and the casing 10 The gap between them constitutes a second oil circulation channel 102 , the second oil circulation channel 102 communicates with the first oil circulation channel 101 , and the second oil circulation channel 102 is located downstream of the first oil circulation channel 101 . The oil filtered through the coalescing filter element 20 flows into the first oil circulation channel 101 from its filtered side, and then flows from the first oil circulation channel 101 to the second oil circulation channel 102, and from the second oil circulation channel 102 into the separation filter element 30 for oil separation.

When the oil product dehydration filter element device is arranged vertically, the separation filter element 30 is located at the axially lower position of the coalescing filter element 20, which can reduce the occupation of radial space, and can also use the gravity of the oil to pass through the coalescing filter element and the separation element in sequence from top to bottom. The filter element improves the filtration efficiency and facilitates the discharge of separated water.

The oil flows from the inner side of the coalescing filter element 20 to the outer side into the first oil circulation channel 101 , and then enters the separation filter element 30 from the downstream second oil circulation channel 102 . When the oil passes through the coalescing filter element 20 , it may flow from the inside to the outside, and when the oil passes through the separation filter 30 , it may flow from the outside to the inside.

In the oil dehydration filter element of the embodiment of the present invention, the coalescing filter element and the separation filter element are fixedly connected by connectors to form an axially arranged integrated filter element structure, so that the oil can complete the two processes of coalescence and separation at one time. The liquid flow channel is located downstream of the first oil flow channel. The oil flowing out of the coalescing filter element flows into the separation filter element by gravity. Combined with the filtration efficiency of the filter material, the purpose of quickly breaking away from the water in the oil is achieved.

Exemplarily, the coalescing filter element 20 and the separation filter element 30 are fixedly connected by a connecting piece 40, and the two can form an integral structure with a coalescence function and a separation function. Both the coalescing filter element 20 and the separation filter element 30 may be cylindrical, and both diameters may be the same. The housing 10 is sleeved on the outside of the coalescing filter element 20 and the separation filter element 3, the separation filter element 30 is located below the coalescing filter element 20, and the gap between the outer wall of the coalescing filter element 20 and the upper part of the inner wall of the housing 10 constitutes the first oil flow The channel 101 , the gap between the outer wall of the separation filter element 30 and the lower part of the inner wall of the casing 10 constitutes a second oil circulation channel 102 , and the second oil circulation channel 102 is located axially below the first oil circulation channel 101 .

In some embodiments, the housing 10, the coalescing filter element 20 and the separating filter element 30 are integrally constructed. The integrated structure means that the housing 10 , the coalescing filter element 20 and the separation filter element 30 are fixedly connected together to form a whole. For example, the coalescing filter element 20 and the separating filter element 30 are connected by a connecting piece 40 , and the coalescing filter element 20 and the separating filter element 30 are respectively fixed to the housing 10 .

It should be pointed out that usually the coalescing filter element and the separation filter element in the related art are two independent parts, which need to be installed in the tank body separately, which is inconvenient and laborious to install. For this reason, the present invention adopts an integrated structure of the housing, the coalescing filter element and the separation filter element. Such an integrated structure can be installed in place at one time, reducing the installation difficulty of the oil dehydration filter element.

In some embodiments, the coalescing filter element 20 includes a first inner cavity communicated with the oil inlet 121, and the separation filter element 30 includes a second inner cavity communicated with the oil outlet 131; the connecting member 40 includes a first inner connecting portion 41 and The second inner connecting part 42, the first inner connecting part 41 is embedded and fixed in the first inner cavity, and the second inner connecting part 42 is embedded and fixed in the second inner cavity; and/or, the connector 40 includes a first outer connecting part 43 and the second outer connection part 44 , the first outer connection part 43 is nested and fixed on the outside of the coalescing filter element 20 , and the second outer connection part 44 is nested and fixed on the outside of the separation filter element 30 .

The coalescing filter element and the separation filter element are fixedly connected through the nesting of connectors, and the two are combined to facilitate the installation and disassembly of the oil dehydration filter element.

The connecting piece 40 can be arranged on the coaxial line L with the coalescing filter element 20 and the separation filter element 30, which is convenient for assembly and can reduce radial space occupation.

In some embodiments, the coalescing filter element 20 includes a coalescing inner support frame 21 and a coalescing outer support frame 22, the coalescence outer support frame 22 is sleeved on the outside of the coalescence inner support frame 21, and the coalescence inner support frame 21 is provided with A plurality of coalescing inner through holes communicated with the oil inlet 121, coalescing medium 23 is filled between the coalescing outer support frame 22 and the coalescing inner support frame 21, and the coalescing outer support frame 22 is provided with multiple An oil flow channel 101 communicates with the coalescing outer through hole.

The oil entering from the oil inlet is evenly dispersed into the coalescing medium 23 between the coalescing outer support frame 22 and the coalescing inner support frame 21 through multiple coalescing inner through holes, so that the oil coalescing and filtering are more sufficient , the oil filtered by the coalescing medium 23 flows from the through hole outside the coalescing to the first oil circulation channel 101 . Coalescing medium 23 may be fibers, such as glass fibers. The coalescing inner support frame 21 and the coalescing outer support frame 22 are more firmly and reliably combined through the nesting and fixing of the connectors.

In some embodiments, the separation filter element 30 includes a separation inner support frame 31 and a separation outer support frame 32, the separation outer support frame 32 is sleeved on the separation inner support frame 31, and the separation inner support frame 31 is provided with a plurality of oil outlets 131 Connected separation inner filter holes, the separation medium 33 is filled between the separation outer support frame 32 and the separation inner support frame 31, and the separation outer support frame 32 is provided with a plurality of separation outer through holes communicating with the second oil circulation channel 102 .

The oil mixed with free water in the first oil circulation channel 101 enters from the second oil circulation channel 102 into the separation medium 33 between the separated outer support frame 32 and the separated inner support frame 31 for dehydration and filtration, and the water in the oil is removed from the The drain port 132 is discharged, and the oil with higher quality after dehydration is discharged from the oil outlet 131 .

In some embodiments, the housing 10 includes a housing body 11, an upper cover 12 and a lower cover 13, the upper cover 12 includes a first upper connecting portion 122, a second upper connecting portion 123 and a third upper connecting portion 124, the first upper connecting portion part 122 is embedded and fixed in the coalescing inner support frame 21 or in the coalescence outer support frame 22, the second upper connecting part 123 is nested and fixed on the outer side of the coalescence outer support frame 22, and the third upper connecting part 124 is nested and fixed in the shell On the outside of the main body 10 , an oil inlet 121 is provided on the upper cover 12 .

The lower cover 13 includes a first lower connecting part 133, a second lower connecting part 134 and a third lower connecting part 135, the first lower connecting part 133 is embedded and fixed in the separated inner support frame 31, and the second lower connecting part 134 is nested and fixed On the outer side of the separated outer support frame 32 , the third lower connecting portion 135 is nested and fixed on the outer lower part of the shell body 11 , and the oil outlet 131 and the drain port 132 are arranged on the lower cover 13 .

The coalescing filter element and the separation filter element are fixed together with the shell body in a nested manner through the upper cover and the lower cover to form an integrated structure, which improves the overall strength, makes the overall structure more compact, and reduces the space occupation.

Exemplarily, the upper cover 12 is sealingly connected with the coalescing inner support frame 21 , the coalescing outer support frame 22 and the shell body 11 in a nested manner, respectively. Specifically, the upper cover 12 has an annular first upper connecting portion 122, a second upper connecting portion 123 and a third upper connecting portion 124 arranged from the inside to the outside in the radial direction R thereof, the first upper connecting portion 122 is The hollow through-hole structure constitutes the oil inlet 121, the first upper connection part 122 is embedded in the coalescence inner support frame 21, and is sealed with the inner wall of the coalescence inner support frame 21; the second upper connection part 123 is nested The third upper connection part 124 is nested in the outer upper part of the outer casing body 11 and is sealingly connected with the upper outer wall of the outer casing body 11 . The sealed connection can be realized by coating epoxy glue G on the surface of the structure.

The lower cover 13 is sealingly connected with the separate inner support frame 31 , the separate outer support frame 32 and the bottom of the housing body 11 in a nested manner. Specifically, the lower cover 13 has an annular first lower connecting portion 133, a second lower connecting portion 134, and a third lower connecting portion 135 arranged sequentially from the inside to the outside in the radial direction R thereof, and the first lower connecting portion 133 is The hollow through-hole structure constitutes the oil outlet 131. The first lower connection part 133 is embedded in the separation inner support frame 31, and is sealingly connected with the inner wall of the separation inner support frame 31; the second lower connection part 134 is sleeved on the separation inner support frame 31. The outer side of the outer support frame 32 is sealed and connected with the outer wall of the separated outer support frame 32 ; the third lower connecting portion 135 is sleeved on the outer bottom of the shell body 11 and is sealed and connected with the outer wall of the shell body 11 . Sealed connections can be achieved by coating epoxy glue.

In some embodiments, the oil outlet 131 includes a first tapered surface, and the bottom of the separating inner support frame 31 is provided with a second tapered surface adapted to the first tapered surface, and the second tapered surface is against the first tapered surface. tapered face.

The surface of the oil outlet 131 facing the separation filter element 30 is a first tapered surface, and the bottom of the separation inner support frame has a second tapered surface adapted to the first tapered surface. The gravity of the integrated coalescing filter element can be used to separate the filter element so that the second conical surface adapted to the first conical surface is in contact with the second conical surface, thereby improving the sealing reliability between the oil outlet of the lower cover and the bottom of the inner support frame.

In some embodiments, the coalescing medium 23 filled in the coalescing outer support frame 23 may include multiple layers of fibers, and the filter fineness of the inner layer of fibers in the multiple layers of fibers is smaller than that of the outer layer of fibers.

Among the multi-layer fibers, the inner layer is close to the coalescing inner support frame, and the outer layer is far away from the inner support frame. When the oil passes through the coalescing filter element, it flows from the inside to the outside. The filtration precision close to the inner layer is small, and the fiber filtration diameter is larger, which is thick fiber. The impurities with larger particles in the oil are filtered first, and the filtration precision close to the outer layer is high. The filter diameter is small, which is fine fiber, and then filters the impurities of smaller particles in the oil, thereby improving the ability of the coalescing filter element to filter impurities in the oil, and reducing the impact of impurities in the oil on the demulsification layer, coalescence layer and Separating the pollution of the lipophilic and hydrophobic layer of the filter element, increasing the effective contact area between water and the filter material, and increasing the dehydration efficiency.

In some embodiments, the coalescing filter element 20 and the separation filter element 30 are arranged on the same axis L. And/or, the length of the coalescence medium 23 in the coalescing filter element is L1, and the length of the separation medium in the separation filter element 30 is L2, wherein L1:L2=1:1~1:2.

The coalescing filter element and the separation filter element are coaxially arranged to simplify the filter structure and reduce the filter volume. By setting different sizes (length ratio) of the coalescing filter element and the separation filter element, the effective area of the coalescing filter material and the separation filter material can meet a specific ratio to ensure a high dehydration efficiency.

In some embodiments, referring to FIG. 1 , the oil dehydration filter element includes a housing 10 , a coalescing filter element 20 and a separation filter element 30 disposed in the housing 10 . The housing 10 includes a housing body 11 , an upper cover 12 with an oil inlet 121 and a lower cover 13 with an oil outlet and a drain. The coalescing filter element 20 includes a coalescing inner support frame 21 with a plurality of coalescing inner through holes and a coalescing outer support frame 22 with a plurality of coalescing outer through holes, wherein the coalescing outer support frame 22 is sleeved in the coalescing inner The support frame 21 is filled with a coalescing medium 23 between them; the upper cover 12 fits and fixes the top of the shell body 11 , the coalescing inner support frame 21 and the coalescing outer support frame 22 . The separation filter element 30 and the coalescing filter element 20 are fixed together in a fitting manner through the connecting piece 40 , and the separation filter element 30 is located below the coalescing filter element 20 in the axial direction Z and coaxially arranged with the coalescing filter element 20 . Specifically, the separation filter element 30 includes a separation inner support frame 31 and a separation outer support frame 32 with a plurality of separation inner through holes, wherein the separation outer support frame 32 is sleeved on the separation inner support frame 31, and the separation is filled between the two. Medium; the lower cover 13 fits and fixes the bottom of the shell body 11 , the separated inner support frame 31 and the separated outer support frame 32 together. Thus, the housing 10, the coalescing filter element 20 and the separation filter element 30 form an integrated structure. A first oil flow channel 101 is formed between the outer wall of the coalescing outer support frame 22 and the inner wall of the upper part of the shell body 11, and a second oil flow channel 101 is formed between the outer wall of the separated outer support frame 32 and the inner wall of the lower part of the shell body 11. The passage 102 and the second oil circulation passage 102 are located below the first oil circulation passage 101 and communicate with each other. The oil enters the coalescing filter element 20 through the oil inlet 121, and first enters the coalescing medium 23 through the coalescing inner through hole of the coalescing inner support frame 21 to coalesce the extremely small water droplets in the oil into larger ones. The water droplets and the coalesced oil flow from the first oil circulation channel 101 to the second oil circulation channel 102 by gravity and enter the separation filter element 30 from the outside to the inside, and further separate the water through the separation medium 33 with its lipophilic and hydrophobic properties. Then the high-quality oil is discharged from the oil outlet 131 of the shell 10, and the detached moisture is discharged from the drain. The coalescing medium 23 filled in the coalescing outer support frame 23 may include multiple layers of fibers, and the precision of the fibers of the inner layer in the layers of fibers is greater than that of the fibers of the outer layer. The length of the coalescence medium 23 in the coalescence filter element is L1, and the length of the separation medium in the separation filter element 30 is L2, wherein L1:L2=1:1~1:2. The upper cover 12 can also be provided with a handle for easy access.

The oil product dehydration filter element of the embodiment of the present invention, the shell, the coalescing filter element and the separation filter element form an integrated structure, and the shell can effectively protect the coalescence filter element and the separation filter element, which is convenient for handling and installation; Arranged in the axial direction, the structure is compact, reducing space occupation; when the oil passes through the coalescing filter element, it flows from the inside to the outside, because the fiber near the inner layer has a small filtration precision, and the fiber filter diameter is relatively large, which is coarse fiber, and the filter near the outer layer High precision, small filter diameter and fine fibers, so it can filter the larger particles in the oil first, and then filter the smaller particles, which can improve the ability of the coalescing filter to filter impurities in the oil and reduce the impact of impurities in the oil on the coalescing filter. The pollution of the demulsification layer, coalescence layer and the lipophilic hydrophobic layer of the separation filter element can increase the effective contact area between water and the filter material and increase the dehydration efficiency; the coaxial layout of the coalescence filter element and the separation filter element is adopted to simplify the filter structure , to reduce the filter volume; by setting different sizes (length ratios) of the coalescing filter element and the separation filter element, the effective area of the coalescing filter material and the separating filter material can meet a specific ratio to ensure a high dehydration efficiency.

Referring to Fig. 2, Fig. 2 is a schematic structural diagram of a dehydration device according to some embodiments of the present invention. The present invention also provides a dehydration device, comprising a tank body 50 and the oil dehydration filter element of any one of the above embodiments. The tank body 50 is provided with an oil liquid delivery port 51, an oil liquid discharge port 52 and a water discharge port 53; the oil dehydration filter element is arranged in the tank body 50, and the gap between the shell 10 of the oil product dehydration filter element and the tank body 50 forms The oil delivery channel 501 , the oil delivery channel 501 communicates with the oil delivery port 51 and the oil inlet 121 , the oil discharge port 52 communicates with the oil outlet 131 , and the water discharge port 53 communicates with the drain port 132 .

The oil enters from the oil delivery port 51, enters the coalescing filter element 20 from the oil inlet 121 through the oil delivery channel 501, and coalesces the extremely small water droplets in the oil into larger water droplets through the coalescing filter element 20 , and then flow through the separation filter element 30, because the separation filter element has good lipophilic and hydrophobic properties, thereby further separating the water, finally, the oil with higher oil quality is discharged from the oil discharge port 52 communicated with the oil outlet 131, and the detached water It can be discharged from the water discharge port 53 communicated with the discharge port 132 by its own weight.

The dehydration device of the present invention is equipped with the oil dehydration filter element of the above embodiment, the oil dehydration filter element is well protected, easy to install, and can reduce the volume of the device and reduce the requirements for the space of the work site.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. 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 above-mentioned embodiments have been shown and described, it can be understood that the above-mentioned embodiments are exemplary, and should not be construed as limitations on the present invention. Changes, modifications, substitutions and variations made by those skilled in the art to the above-mentioned embodiments All within the protection scope of the present invention.

Claims (10)

1. An oil dehydration filter core, characterized by comprising:

a housing (10) comprising an oil inlet (121), an oil outlet (131) and a drain outlet (132);

the coalescing filter element (20) is arranged in the shell, and the front side of the coalescing filter element (20) is communicated with the oil inlet;

the separation filter element (30) is arranged in the shell, the front filtering side of the separation filter element is communicated with the rear filtering side of the coalescing filter element, the front filtering side of the separation filter element is communicated with the water outlet, the rear filtering side of the separation filter element is communicated with the oil outlet, and the separation filter element and the coalescing filter element are distributed in the axial direction (Z).

2. The oil dehydration filter core according to claim 1, wherein,

the coalescing filter element is fixedly connected with the separating filter element through a connecting piece (40), a first oil liquid circulation channel (101) is formed in a gap between the coalescing filter element and the shell, a second oil liquid circulation channel (102) is formed in a gap between the separating filter element and the shell, the second oil liquid circulation channel is communicated with the first oil liquid circulation channel, and the second oil liquid circulation channel is located at the downstream of the first oil liquid circulation channel.

3. The oil dehydration filter core according to claim 2, wherein,

the coalescing filter element comprises a first inner cavity communicated with the oil inlet, and the separating filter element comprises a second inner cavity communicated with the oil outlet;

the connecting piece comprises a first inner connecting part and a second inner connecting part, wherein the first inner connecting part is embedded and fixed in the first inner cavity, and the second inner connecting part is embedded and fixed in the second inner cavity; and/or the connecting piece comprises a first outer connecting part and a second outer connecting part, wherein the first outer connecting part is nested and fixed on the outer side of the coalescing filter element, and the second outer connecting part is nested and fixed on the outer side of the separating filter element.

4. The oil dehydration filter core according to claim 3, wherein,

the coalescing filter element (20) comprises a coalescing inner support frame (21) and a coalescing outer support frame (22), the coalescing outer support frame is sleeved on the outer side of the coalescing inner support frame, the coalescing inner support frame is provided with a plurality of coalescing inner through holes communicated with the oil inlet (121), coalescing media (23) are filled between the coalescing outer support frame and the coalescing inner support frame, and the coalescing outer support frame is provided with a plurality of coalescing outer through holes communicated with the first oil liquid circulation channel (101).

5. The oil dehydration filter core according to claim 4, wherein,

the separation filter element (30) comprises a separation inner support frame (31) and a separation outer support frame (32), the separation outer support frame is sleeved outside the separation inner support frame, the separation inner support frame is provided with a plurality of separation inner filter holes communicated with the oil outlet, separation medium (33) is filled between the separation outer support frame and the separation inner support frame, and the separation outer support frame is provided with a plurality of separation outer through holes communicated with the second oil liquid circulation channel (102).

6. The oil dehydration filter core according to claim 5, wherein,

the shell comprises a shell body (11), an upper cover (12) and a lower cover (13), wherein the upper cover comprises a first upper connecting part, a second upper connecting part and a third upper connecting part, the first upper connecting part is embedded and fixed in the coalescing inner support frame or the coalescing outer support frame, the second upper connecting part is embedded and fixed on the outer side of the coalescing outer support frame, the third upper connecting part is embedded and fixed on the upper part of the outer side of the shell body, and the oil inlet is formed in the upper cover;

the lower cover comprises a first lower connecting part, a second lower connecting part and a third lower connecting part, wherein the first lower connecting part is embedded and fixed in the separation inner support frame or the separation outer support frame, the second lower connecting part is embedded and fixed on the outer side of the separation outer support frame, the third lower connecting part is embedded and fixed on the lower part of the outer side of the shell body, and the oil outlet and the water outlet are arranged on the lower cover.

7. The oil dehydration filter core according to claim 6, wherein,

the oil outlet comprises a first conical surface, a second conical surface matched with the first conical surface is arranged at the bottom of the inner separation support frame, and the second conical surface abuts against the first conical surface.

8. The oil dehydration filter core according to claim 5, wherein,

the coalescing media includes a plurality of layers of fibers, an inner layer of the plurality of layers of fibers having a lower accuracy than an outer layer of fibers.

9. The oil dehydration filter core according to claim 1 or 2, wherein,

the coalescing filter element is arranged coaxially (L) with the separating filter element; and/or the number of the groups of groups,

the length of the coalescing media in the coalescing filter element is L1, and the length of the separation media in the separation filter element is L2, wherein L1: l2=1:1 to 1:2.

10. A dehydration engine, comprising:

a tank (50) provided with an oil delivery port (51), an oil discharge port (52) and a water discharge port (53);

the oil dewatering cartridge as set forth in any one of claims 1-9, said oil dewatering cartridge being disposed in said tank, and a gap between said housing (10) and said tank (50) forming an oil delivery passage (501), said oil delivery passage being in communication with said oil delivery port (51) and said oil inlet, said oil discharge port being in communication with said oil outlet, said water discharge port being in communication with said water discharge port.