CN217961390U - Filter - Google Patents

Abstract

The utility model discloses a filter, including a jar body, it is equipped with the influent stream mouth, has the tube-shape filter core of cavity runner, and the fluid outlet, jar internal along radially being equipped with the mounting, is equipped with a plurality of fixed orificess on this mounting, and the filter core passes through switching device and links to each other with the fixed orifices, and this switching device includes the filter core base, and the filter core base is at least including the spacing portion that inserts the cavity runner, and this spacing portion has the stiff end towards the conical surface pipe of free end shrink, and its lateral wall is seted up and is formed first circulation mouth. The switching device of the utility model realizes the detachable connection of the filter element and the fixing element, and the plurality of fixing holes of one fixing element realize the installation of a plurality of filter elements, thereby being convenient for installation; when the filter element is inserted, the conical tube plays a role in limiting and guiding the filter element; the first circulation port can guide liquid to flow to the filter element for filtering, so that the filtering utilization rate of the filter element is improved, and the coalescence effect is improved; the setting in collecting liquid district prevents effectively that the liquid drop deposit from hindering the filtration of filter core bottom at the bottom of filter core, guarantees to filter and goes on with high efficiency.

Description

Filter

Technical Field

The utility model belongs to the technical field of the filter, especially, relate to a filter.

Background

The filter is an indispensable device on the medium conveying pipeline, and after water to be treated passes through a filter cylinder of a filter screen, impurities are blocked, and when the water to be treated needs to be cleaned, the detachable filter cylinder is taken out, and the water is filled again after treatment.

Patent CN212757890U discloses a high-efficient vapour and liquid separator, including a jar body, gas-liquid separation device, be provided with the air inlet on the middle part lateral wall of jar body, jar body top is provided with the gas outlet, jar body bottom is provided with the liquid outlet, gas-liquid separation device includes blade separator and coalescence filter core separator, and gas is first through blade separator primary separation, carries out the secondary separation by coalescence filter core separator again, and gas only upwards flows at jar internal, has reduced the time of staying of gas at jar internal, has reduced fluid pressure loss, has improved separation efficiency.

In this patent, the inconvenient is dismantled in the installation of coalescence filter core separator, wastes time and energy when changing, and simultaneously, coalescence filter core separator passes through the solid fixed ring of coalescence filter core and is fixed in the tank body, and at the liquid coalescence in-process, the liquid drop that subsides after the coalescence can directly deposit in coalescence filter core separator's bottom, has hindered the coalescence separation of coalescence filter core separator bottom, has influenced holistic coalescence separation efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a filter which is convenient to disassemble and assemble, firm in mounting structure and high in filtering efficiency.

The utility model provides a technical scheme that its technical problem adopted is: the filter comprises a tank body, a flow inlet, a cylindrical filter element with a hollow flow channel and a fluid outlet, wherein a fixing piece is arranged in the tank body along the radial direction, a plurality of fixing holes are formed in the fixing piece, the filter element is connected with the fixing holes through a switching device, the switching device comprises a filter element base, the filter element base at least comprises a limiting portion inserted into the hollow flow channel, the limiting portion is provided with a conical pipe with a fixed end contracting towards a free end, and a first flow port is formed in the side wall of the conical pipe.

The utility model realizes the detachable connection of the filter element and the fixing part by arranging the switching device, the fixing part is provided with a plurality of fixing holes, and one fixing part can realize the installation of a plurality of filter elements, thereby having convenient installation; when the filter element is inserted, the design of the conical surface pipe not only plays a role in limiting the filter element, but also can facilitate the insertion of the filter element, namely plays a role in guiding; the first circulation port can guide liquid to flow to the filter element for filtering, and meanwhile, the filtering utilization rate of the filter element is improved; simultaneously, the lateral wall is located to first circulation through-hole, flows in from the through-hole at liquid, can flow out from the first circulation mouth of lateral wall after the collision of conical tube inner end, and when the collision, the liquid velocity of flow descends, and the probability of collision merging between the dispersed phase also can greatly increased to can increase the effect of coalescence.

Further, one side of the fixing piece forms a liquid collecting area, and at least part of the adapter is positioned in the liquid collecting area so as to lift the filter element upwards to be far away from the liquid collecting area.

The arrangement of the liquid collecting area enables dispersed phase large liquid drops formed after coalescence to fall into the liquid collecting area for deposition and collection, effectively prevents the dispersed phase large liquid drops from being deposited at the bottom of the filter element, prevents the bottom of the filter element from being filtered, and ensures that the filtering is carried out efficiently.

Furthermore, the switching device further comprises an assembly seat matched and connected with the fixing piece, and a liquid collecting pipe communicated with the limiting part.

The assembly seat is used for fixedly assembling with the fixing piece, and the integral assembly structure is simpler and more stable; the liquid collecting pipe is arranged to facilitate the formation of a liquid collecting area; meanwhile, fluid can pass through the liquid collecting pipe, so that the filtering is smooth.

Furthermore, the assembling seat comprises an inserting pipe which can be inserted into the fixing hole, and an installation convex disc which is arranged at the outer edge of the inserting pipe.

The external diameter of grafting pipe is roughly equal with the internal diameter of fixed orifices, takes over the firm erection joint of fixed orifices for fixed filter core base, installation flange be used for towards the one side of mounting with the mounting butt, increase stability

Further, the insertion depth of the limiting part is at least 10% of the axial length of the filter element.

The depth of insertion of spacing portion obtains guaranteeing for it is more firm to the limiting displacement of filter core, avoids the fluid circulation to lead to the skew of filter core, and when the overall structure steadiness improved, the filter effect was better.

Furthermore, the diameter of the fixed end of the conical tube is matched with the inner diameter of the hollow flow channel of the filter element.

The stiff end can realize the location of filter core with the firm assembly connection of filter core this moment, need not to set up limit structure in addition.

Furthermore, the limiting part is also provided with a fixed pipe for inserting the filter element, and the side wall of the fixed pipe is provided with a second flow port; the first circulation port is communicated with the second circulation port; and the sum of the areas of the first circulation port and the second circulation port is larger than the area of the inflow port.

The outer diameter of the fixed pipe is matched with the inner diameter of the filter element, so that the filter element can be stably inserted, and the second circulation port is formed in the fixed pipe, so that the filtering utilization rate of the filter element is improved; the first circulation port and the second circulation port are communicated to ensure that the filtering at each position of the filter element is relatively uniform, the sum of the areas of the circulation ports is larger than the area of the inflow port, and the fluid flowing into the inflow port can timely flow into the filter element for filtering.

Further, the filter element base comprises a fixed convex disc for fixing the filter element; the edge of the filter element fixing convex disc is provided with a convex ring which can be matched with the filter element in a sealing way.

The fixed protruding dish is equipped with the bulge loop towards the one side of filter core, and after the filter core was inserted and is established in the filter core base, the bulge loop was firmly the butt with the top surface of filter core, realizes sealedly, prevents the weeping.

Furthermore, the switching device also comprises a guide rod structure which is connected with the filter element base and extends along the axial direction of the tank body, the filter element is sleeved outside the guide rod, and the sum of the flow areas between the inner wall of the filter element and the outer wall of the guide rod is larger than the area of the flow inlet; the filter element base further comprises a connecting part which is matched and connected with the guide rod.

The guide rod has a simple structure, and the guide rod axially extends the whole length direction of the filter element, so that the guide rod not only has a guide effect on the filter element, but also can more stably support the filter element, and has an effect of connecting the filter element base and the connecting part; the flow area between the filter element and the guide rod is larger than the area of the flow inlet, so that the fluid is quickly and timely treated, the accumulation of the fluid is avoided, and the improvement of the filtering efficiency is facilitated; the arrangement of the connecting part is convenient for the insertion of the guide rod.

Furthermore, the adapter device comprises a crimping part for abutting the filter element to the direction of the fixed part, the crimping part at least comprises an insertion block and a pressing plate capable of abutting against the filter element, the insertion block abuts against the inner wall of the filter element, and the cross section of the insertion block is triangular; or the crimping part is a filter element pressing plate connected with the tank body.

When the filter element is mounted, the filter element base is buckled on the fixing hole of the fixing piece, then the guide rod structure and the hollow filter element seat are connected and fixed, then when the filter element is mounted, the filter element is inserted in the hollow filter element seat along the guide rod, and finally the filter element is compressed through the compression joint part, so that the fixation of the filter element is realized, the assembly structure is stable, the assembly process is simple, and when the filter element is disassembled, the disassembly of the filter element can be realized only by loosening the compression joint part, the filter element is convenient and rapid, and the adverse effect on the filtration can not be generated; the outer diameter of the circumscribed circle of the inserting block is matched with the inner diameter of the filter element and is used for being inserted into the filter element to realize the fixation of the filter element, and the pressing plate is used for pressing the filter element tightly, so that the assembly structure of the filter element is more stable; the inserting port is arranged in the inserting block, and the inserting port is aligned with the guide rod and inserted into the filter element when in use, so that the assembly structure is simple and effective; the cross section of the insertion port is triangular, so that the utilization rate of the filtering area of the filter element is increased.

The utility model has the advantages that: the filter element and the fixing piece are detachably connected by arranging the switching device, the fixing piece is provided with a plurality of fixing holes, and one fixing piece can realize the installation of a plurality of filter elements and is convenient to install; when the filter element is inserted, the design of the conical surface pipe not only plays a role in limiting the filter element, but also can facilitate the insertion of the filter element, namely plays a role in guiding; the first circulation port can guide liquid to flow to the filter element for filtering, and meanwhile, the filtering utilization rate of the filter element is improved; simultaneously, the lateral wall is located to first circulation through-hole, flows in from the through-hole at liquid, can flow out from the first circulation mouth of lateral wall after the collision of conical tube inner end, and when the collision, the liquid velocity of flow descends, and the probability of collision merging between the dispersed phase also can greatly increased to can increase the effect of coalescence.

The liquid collecting area is arranged, so that liquid drops formed after coalescence can fall into the liquid collecting area for deposition and collection, the liquid drops are effectively prevented from being deposited at the bottom of the filter element, the filtration at the bottom of the filter element is prevented, and the efficient filtration is ensured; when the filter element is mounted, the filter element base is buckled on the fixing hole of the fixing piece, then the guide rod and the hollow filter element seat are fixedly connected, then when the filter element is mounted, the filter element is inserted in the hollow filter element seat along the guide rod, and finally the filter element is compressed through the compression joint part, so that the fixation of the filter element is realized, the assembly structure is stable, the assembly process is simple, and when the filter element is disassembled, the compression joint part is only required to be loosened, so that the disassembly of the filter element can be realized, the filter element is convenient and rapid, and the adverse effect on the filtration can not be generated; the outer diameter of the circumscribed circle of the inserting block is matched with the inner diameter of the filter element and is used for being inserted into the filter element to realize the fixation of the filter element, and the pressing plate is used for pressing the filter element tightly, so that the assembly structure of the filter element is more stable; the inserting port is arranged in the inserting block, and the inserting port is aligned with the guide rod and inserted into the filter element when in use, so that the assembling structure is simple and effective; the section of the inserting port is triangular, so that the utilization rate of the filtering area of the filter element is increased.

Drawings

Fig. 1 is a cross-sectional view of a filter according to an embodiment of the present invention.

Fig. 2 is a perspective view of an adapter of a filter according to an embodiment of the present invention.

Fig. 3 is a perspective view of a filter element base of a filter according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a filter cartridge base and a fixing member of a filter according to an embodiment of the present invention.

Fig. 5 is a schematic view of a fitting structure of a guide rod and a crimping portion in a filter according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of a filter according to a second embodiment of the present invention.

Fig. 7 is a cross-sectional view of another form of the filter according to the second embodiment of the present invention.

Fig. 8 is a cross-sectional view of a filter according to a third embodiment of the present invention.

Wherein, 1-tank, 11-inlet, 12-outlet, 13-filter press plate, 14-outlet, 2-filter, 21-hollow flow channel, 22-coalescing filter element, 23-separating filter element, 3-fixing element, 31-fixing hole, 4-adapter, 41-assembly seat, 411-plug tube, 42-header tube, 412-mounting flange, 43-guide rod, 5-filter base, 51-limiting part, 511-fixing end, 512-free end, 513-conical tube, 52-fixing tube, 514-first flow port, 521-second flow port, 53-fixing flange, 531-flange, 54-connecting part, 55-crimping part, 551-plug block, 552-press plate, 553-knob, 6-liquid collecting area, and 7-liquid collecting space.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Example one

As shown in fig. 1-5, the filter includes a tank 1 having an inlet 11, a cylindrical filter element 2 having a hollow flow passage 21, and a fluid outlet 12, wherein a fixing member 3 is radially disposed in the tank 1, and the fixing member 3 has a plurality of fixing holes 31.

In this embodiment, the fluid may be a liquid or a gas, and the description will be given by taking a gas as an example; the tank body 1 is a vertical tank body, the fluid inlet 11 is positioned below the tank body 1, the fluid outlet 12 is positioned above the tank body 1, and the filter element 2 is a coalescence filter element.

The filter element 2 is connected to the fixing hole 31 through the adapter 4, the adapter 4 includes a filter element base 5, the filter element base 5 at least includes a limiting portion 51 inserted into the hollow flow channel 21, the limiting portion 51 has a conical tube 513, which is contracted from the fixing end 511 to the free end 512, and a first flow port 514 is formed on the side wall. Here, the fixed end 511 refers to an end close to the fixing member 3, and the free end 512 refers to an end far from the fixing member 3. The diameter of the fixing point end 511 of the conical tube 513 is matched with the inner diameter of the hollow flow channel 21 of the filter element 2, so that the stable assembly connection with the filter element 2 can be realized.

The filter element base 5 further comprises a fixed convex disc 53 for fixing the filter element 2, in order to realize the sealing connection between the filter element 2 and the filter element base 5, a convex ring 531 is arranged at the edge of the fixed convex disc 53 facing the filter element 2, when the filter element 2 is inserted into the filter element base 5, the convex ring 531 can be firmly abutted with the top surface of the filter element 2, the sealing is realized, the leakage is prevented, namely, the inner wall of the convex ring 531 is abutted with the outer wall of the filter element 2 to realize the sealing, and the end surface of the filter element 2 is abutted with the surface of the fixed convex disc 53 to realize the sealing.

The limiting part 51 is further provided with a fixing pipe 52 for inserting the filter element 2, the side wall of the fixing pipe is provided with a second flow port 521, the outer diameter of the fixing pipe 52 is approximately equal to the inner diameter of the hollow flow channel 21 of the filter element 2, namely, the fixing pipe 52 can be inserted into the hollow flow channel 21 in a tight fit manner; the tapered pipe 513 is formed by axially contracting inward from the end of the fixed pipe 52, and the design of the tapered pipe 513 facilitates the insertion of the filter element 2 into the fixed pipe 52 when the filter element 2 is inserted.

The first ports 514 may extend along the side wall of the tapered tube 513, the number of the first ports 514 may be three, the second ports 521 may extend axially along the side wall of the fixed tube 52, the number of the second ports may be equal to the number of the first ports 514, and the first ports 514 and the second ports 521 communicate with each other. The outer circle of the fixed pipe 52 abuts against the inner side wall of the filter element 2, so that the second flow port 521 is arranged at the position, which is beneficial to improving the filtering utilization rate of the filter element 2, and the first flow port 514 on the conical pipe 513 can guide the liquid to flow to the filter element 2 for filtering.

In order to ensure that the fluid flowing in from the inlet port 11 can flow to the filter element 2 for filtration in a timely manner, the sum of the areas of all the first and second flow ports 514, 521 is larger than the area of the inlet port 11. When the areas of the first and second flow ports 514 and 521 are too small, the liquid flowing into the inlet port 11 cannot flow into the filter element 2 in time for filtration.

In order to ensure the assembling stability between the filter element 2 and the limiting part 51, the insertion depth of the limiting part 51 is at least 10% of the axial length of the filter element 2, and here, when the limiting part 51 only comprises the conical tube 513, the axial length of the conical tube 513 is at least 10% of the axial length of the filter element 2, or, when the limiting part 51 comprises both the conical tube 513 and the fixing tube 52, the sum of the lengths of the conical tube 513 and the fixing tube 52 is at least 10% of the axial length of the filter element 2.

A sump 6 is formed at one side of the fixture 3, in the specific embodiment at the upper side of the fixture 3, and at least part of the adapter means 4 is located in the sump 6 for lifting the filter element 2 upwards away from said sump 6.

The adapter 4 further includes a mounting base 41 connected to the fixing member 3, and a liquid collecting tube 42 connected to the limiting portion 51. Specifically, as shown in fig. 3 and 4, the mounting seat 41 includes a plug tube 411 that can be axially inserted into the fixing hole 31, and a mounting flange 412 disposed at an outer edge of the plug tube 411. The outer diameter of the insertion pipe 411 is matched with the inner diameter of the fixing hole 31, and the insertion pipe can be inserted into the fixing hole 31 in a tight fit manner; one side end face of the mounting convex disc 412 is abutted with the surface of the fixing piece 3, so that the stability is improved.

The liquid collecting pipe 42 can form the liquid collecting area 6 in the vertical tank body 1, and liquid drops formed after coalescence fall into the liquid collecting area 6 for deposition and collection, so that the liquid drops are prevented from being deposited at the bottom of the filter element 2, and the bottom of the filter element 2 is prevented from being filtered. Of course, in other embodiments, the adapter 4 may not be provided with the header pipe 42, and the tank 1 may not form the header region 6.

The adapter 4 additionally comprises a guide 43 arrangement connected to the cartridge base 5 and extending in the axial direction of the vessel 1, the guide 43 in this embodiment extending in the longitudinal direction, and a crimp 55. The cartridge base 5 is cooperatively associated with the header 42 and the guide rod 43, respectively, and the crimp portion 55 is configured to engage the cartridge 2 in a direction of the cartridge base 5, thereby providing an assembly of the fixing member 3 and the cartridge 2. Of course, in other embodiments, the adapter 4 can be provided without the guide rods 43 and the crimp 55, with the cartridge 2 and the cartridge base 5 being fixedly connected.

As shown in fig. 5, the press-fitting portion 55 includes at least an insertion block 551 and a pressing plate 552 which can be brought into contact with the cartridge 2, and the insertion block 551 is inserted into the hollow flow passage 21 in tight fit with the inner wall of the cartridge 2, that is, the insertion block 551. The plug block 551 is also provided with a plug opening (not shown) for inserting the guide rod 43, and the plug opening is aligned with the guide rod 43 and inserted into the filter element 2 in use and screwed by a knob 553. In this embodiment, the cross section of the insertion block 551 is triangular, so that three edges of the insertion block 551 abut against the inner wall of the filter element 2, the contact area is small, the utilization rate of the filter area of the filter element 2 is increased, and the influence on the filtration of the filter element 2 is small.

The filter element 2 is sleeved outside the guide rod 43, and a notch 431 is formed in the outer wall of one end, close to the crimping part 55, of the guide rod 43, and the notch 431 is convenient for fixing tools such as a wrench when the guide rod 43 is plugged and screwed. Of course, in other embodiments, the guide rod 43 may be another structure, such as a guide rod structure disposed outside the filter cartridge 2. In order to adapt to the structure of the guide rod 43, the filter cartridge base 5 further comprises a connecting portion 54, which is a hollow cylindrical structure as shown in fig. 3 and 4, so that two ends of the guide rod 43 are respectively inserted into the hollow portion of the connecting portion 54 and the insertion opening of the insertion block 551 in a tight fit manner.

In order to prevent the liquid flowing in from the inlet 11 from flowing into the filter element 2 in time for filtering, ensure the smooth fluid filtering and ensure that enough flow area is reserved, the sum of the flow areas between the inner wall of the filter element 2 and the outer wall of the guide rod 43 is larger than the area of the inlet 11.

The utility model discloses during the assembly, can insert in the fixed orifices 31 with the grafting pipe 311 earlier, insert connecting portion 54 with the one end of guide arm 43 afterwards, establish the outside at guide arm 43 with 2 axial covers of filter core, guarantee simultaneously that the cavity runner 21 of filter core 2 closely cooperates with fixed pipe 52, and guarantee the sealed cooperation of filter core 2 tip and fixed flange 53 and bulge loop 531, be connected crimping portion 55 and guide arm 43 at last, it is inside to insert the one end that the piece 551 inserted the cavity runner 21 of filter core 2 this moment, clamp plate 552 compresses tightly it with the terminal surface counterbalance of filter core 2, realize the fixed of filter core 2. Of course, the installation sequence can be interchanged and adjusted according to the actual installation situation. When dismantling, only need loosen crimping portion 55, just can realize the dismantlement of filter core 2, convenient and fast.

The utility model discloses well filter core 2 is coalescence filter core 22, and the centre-to-centre spacing of the adjacent coalescence filter core 22 of definition is L, and coalescence filter core 22's external diameter is

Then L:

because the filtering flow path of the coalescing filter element 22 is inward and outward, the distance between adjacent coalescing filter elements 22 is too close, the liquid flowing out of the coalescing filter element 22 easily impacts the adjacent coalescing filter elements 22 to affect the filtering of the coalescing filter elements 22, and if the distance is too far, the occupied space is too large.

The filtering principle of the filter is as follows: the gas (aerosol) mixed with liquid impurities firstly enters the liquid collecting space 7 below the filter fixing part 3 to separate out partial liquid, then the liquid-containing gas can upwards enter the coalescing filter element 22, liquid drops in the gas are gradually merged to form large liquid drops under the action of the coalescing filter element 22 and are deposited in the liquid collecting area 6, the gas is discharged through the fluid outlet 12 to realize gas-liquid separation, and the gas outlet is higher than the top end of the coalescing filter element 22 to prevent the gas from taking away the large liquid drops of the coalesced liquid phase when flowing out.

Example two

As shown in fig. 6, in this embodiment, the fluid is an oil-water mixture, at this time, the tank 1 is a vertical tank, the inlet 11 is located above the tank 1, the outlet 12 is located below the tank 1, the filter element 2 includes a coalescing filter element 22 and a separating filter element 23 sequentially arranged in a flow channel direction, the liquid collecting region 6 is located above the fixing member 3, at this time, the coalescing filter element 22 above and the separating filter element 23 below are coaxially connected, the separating filter element 23 is connected to the fixing hole 31 on the fixing member 3 through the adapter 4, and other structures of the adapter 4 are the same as those of the first embodiment and will not be described again. In this embodiment, the crimp 55 is a cartridge press 13 sealingly connected to the inner wall of the canister 1 for crimping the coalescing cartridge 22 and communicating with the center post of the coalescing cartridge 22. The adapter 4 here may be provided without the guide bar arrangement 43.

In another embodiment, the coalescing filter element 22 and the separating filter element 23 can also be separately arranged, as shown in fig. 7, in this case, the fixing elements 3 are respectively arranged on the upper and the lower sides of the vertical tank 1, and the coalescing filter element 22 and the separating filter element 23 are respectively connected with the upper and the lower fixing elements 3 through the adapter 4. The adapting device 4 is the same as the first embodiment, and is not described again.

The center distance between adjacent separation filter elements 23 is defined as L, and the outer diameter of the separation filter elements 23 is defined as

Then L:

of course, the center distance between adjacent coalescing filter elements 22 and the outer diameter of the coalescing filter elements 22 satisfy the above conditions to ensure smooth coalescence.

The filtering principle of the filter is as follows: the oil-water mixture enters from the inlet 11, and then passes through the coalescing filter element 22 to coalesce small droplets to form large droplets, and then the oil-water mixture containing large droplets dispersed therein after being treated by the coalescing filter element 22 flows to the separating filter element 23, wherein the separating filter element 23 can prevent the large droplets dispersed phase in the oil-water mixture from passing through, and finally discharge the continuous phase from the fluid outlet 12, thereby achieving oil-water separation.

EXAMPLE III

As shown in fig. 8, in the present embodiment, liquid-liquid separation is performed, the tank 1 is a horizontal tank, the filter element 2 may include a coalescing filter element 22 and a separating filter element 23 which are sequentially arranged according to a flow channel, and the coalescing filter element 22 and the separating filter element 23 are respectively connected to the fixing hole 31 through the adapter 4. The structure of the adapter 4 differs from that of the first embodiment in that the header pipe 42 is not required and the header region 6 is not required.

The filtering principle of the filter is as follows: the oil-water mixture enters from the inlet 11 and then enters the coalescing filter element 22 through the fixed hole 31, the coalescing filter element 22 can coalesce dispersed phase droplets in the oil-water mixture to form large droplets, and then the oil-water mixture containing the large droplets with dispersibility flows to the separating filter element 23 after being treated by the coalescing filter element 22, wherein the separating filter element 23 can prevent the large droplet dispersed phase in the oil-water mixture and only allow a continuous phase to pass through, and finally is discharged from the fluid outlet 12, so that oil-water separation is realized.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims (10)

1. The filter, including a jar body, it is equipped with the influent stream mouth, has the tube-shape filter core of cavity runner, and fluid outlet, its characterized in that: the tank body is internally provided with a fixing part along the radial direction, the fixing part is provided with a plurality of fixing holes, the filter element is connected with the fixing holes through a switching device, the switching device comprises a filter element base, the filter element base at least comprises a limiting part inserted into the hollow flow channel, the limiting part is provided with a conical pipe with a fixed end shrinking towards a free end, and the side wall of the conical pipe is provided with a first flow port.

2. The filter of claim 1, wherein: one side of the fixing piece forms a liquid collection area, and at least part of the adapter is positioned in the liquid collection area so as to lift the filter element upwards to be far away from the liquid collection area.

3. The filter of claim 1, wherein: the switching device also comprises an assembly seat which is matched and connected with the fixing piece, and a liquid collecting pipe which is communicated with the limiting part.

4. A filter as claimed in claim 3, wherein: the assembling seat comprises an inserting pipe which can be inserted into the fixing hole and an installation convex disc arranged at the outer edge of the inserting pipe.

5. The filter of claim 1, wherein: the insertion depth of the limiting part is at least 10% of the axial length of the filter element.

6. The filter of claim 1, wherein: the diameter of the fixed end of the conical tube is matched with the inner diameter of the hollow flow passage of the filter element.

7. The filter of claim 1, wherein: the limiting part is also provided with a fixed pipe for inserting the filter element, and the side wall of the fixed pipe is provided with a second flow port; the first circulation port is communicated with the second circulation port; and the sum of the areas of the first circulation port and the second circulation port is larger than the area of the inflow port.

8. A filter according to any one of claims 1 to 7, wherein: the filter element base comprises a fixed convex disc for fixing the filter element; the edge of the filter element fixing convex disc is provided with a convex ring which can be matched with the filter element in a sealing way.

9. A filter according to any one of claims 1 to 7, wherein: the switching device also comprises a guide rod structure which is connected with the filter element base and extends along the axial direction of the tank body, the filter element is sleeved outside the guide rod, and the sum of the flow areas between the inner wall of the filter element and the outer wall of the guide rod is larger than the area of the flow inlet; the filter element base further comprises a connecting part which is connected with the guide rod in a matched mode.

10. A filter according to any one of claims 1 to 7, wherein: the adapter device comprises a crimping part for abutting the filter element to the direction of the fixed part, the crimping part at least comprises an insertion block and a pressing plate capable of abutting against the filter element, the insertion block abuts against the inner wall of the filter element, and the cross section of the insertion block is triangular; or the crimping part is a filter element pressing plate connected with the tank body.

Images