CN209890594U - Filter system with backflushing device - Google Patents

Abstract

The utility model discloses a filtration system with recoil device, including filter equipment and recoil device, wherein, filter equipment includes filter chamber and filtration membrane, filtration membrane separates the filter chamber for first side and with the second side of pipeline intercommunication, the recoil device includes first cylinder body, first piston, cut-off mechanism, pushing mechanism and guiding mechanism, first piston separates first cylinder body top-down for first cavity and second cavity, first cavity and pipeline intercommunication, pushing mechanism can drive first piston and carry out the pressure boost to the liquid in the first cavity, when cut-off mechanism dams the liquid, the liquid after the pressure boost only can be followed pipeline and carried out the refluence, guiding mechanism can adjust the motion stroke of pushing mechanism drive first piston in first cylinder body. The utility model provides a filtration system with recoil device can satisfy the requirement to stabilizing effectual recoil pressure under the different work condition when back flush filtration membrane, and its extensive applicability can reduce system cost.

Description

Filter system with backflushing device

Technical Field

The utility model relates to a liquid filtration field, in particular to filtration system with recoil device.

Background

Filtration devices are widely used in many industries, for example, in beer production where fermentation broth after fermentation has been completed is stored for a period of time at low temperature, and a small amount of material remains suspended in the wine, although most of the cold haze and yeast cells have settled and separated. Further filtration is necessary to package the beer in order that yeast cells and other haze do not separate out of the beer during the minimum shelf life.

The existing beer filtration technology mainly comprises centrifugal separation, diatomite filtration, cross-flow filtration and the like, wherein the cross-flow filtration is a novel filtration technology, belongs to dynamic filtration and is advanced in technology. Although most of sediments attached to the ceramic membrane can be taken away by high-speed turbulent flow of the wine during cross-flow filtration, a small amount of particles are still deposited in micropores of the ceramic membrane after long-time filtration and slowly block membrane pores, so that the filtration capacity of the ceramic membrane is gradually reduced.

Chinese patent publication No. CN107779372A discloses a filtration system and a filtration method with a backflushing device, which is used to backflush a ceramic membrane, thereby washing out particles deposited in micropores of the ceramic membrane. However, such a filtration system does not guarantee effective backwashing of the ceramic membranes under different operating conditions. In actual production, the filtration system has different yield requirements, the higher the yield is, the more ceramic membranes are needed, the larger the volume of the filtration cavity is, and the more compression is needed during backwashing of the backwashing device to stably maintain the pressure of the backwashing ceramic membranes at a required set value. In addition, when different beers have different qualities and different compressibility, and when the filtration system with the same yield is used for filtering beers with different qualities, the compression amount of the backwashing ceramic membrane can be adjusted when the backwashing device is used for backwashing, so that the pressure of the backwashing ceramic membrane is stably maintained at a required set value. Therefore, in order to meet different working conditions, the backflushing devices with different compression amounts need to be configured on the filtering system, the applicability is poor, and the system cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a filtration system with recoil device to when solving among the prior art recoil device and carrying out the back flush to filtration membrane under different work condition, can not make back flush filtration membrane's pressure stability maintain at required setting value, thereby make its suitability poor, problem that the system is with high costs.

In order to solve the technical problem, the embodiment of the utility model discloses a filtering system with a backflushing device, which comprises a filtering device and the backflushing device, wherein the filtering device comprises a filtering cavity and a filtering membrane, the filtering cavity is divided into a first side and a second side by the filtering membrane, and the second side is communicated with a conveying pipeline; the backflushing device comprises a first cylinder body, a first piston, a cut-off mechanism, a pushing mechanism and an adjusting mechanism, wherein the first piston is arranged in the first cylinder body and divides the inner space of the first cylinder body into a first cavity and a second cavity from top to bottom, the first cavity is communicated with the conveying pipeline, the pushing mechanism can drive the first piston to reciprocate in the first cylinder body and pressurize liquid in the first cavity, the cut-off mechanism is arranged on a flow path of the liquid, when the cut-off mechanism cuts off the liquid, the liquid after pressurization can only flow backwards along the conveying pipeline, and the adjusting mechanism can adjust the movement stroke of the pushing mechanism for driving the first piston in the first cylinder body.

Optionally, the recoil device further comprises a second cylinder, the bottom of the first cylinder is connected with the top of the second cylinder through a partition part, a second piston is arranged in the second cylinder, the second piston divides the inner space of the second cylinder into a third cavity and a fourth cavity from top to bottom, the first piston and the second piston are connected through a connecting rod, and the connecting rod penetrates through the partition part in a sealing manner and can move up and down relative to the partition part.

Optionally, the adjustment mechanism is an adjustment block.

Optionally, the adjustment block is fixed on an inner wall of the bottom plate of the second cylinder.

Optionally, the number of the adjusting blocks is at least two, and the moving stroke of the first piston can be adjusted by changing the adjusting blocks fixed on the inner wall of the bottom plate of the second cylinder.

Optionally, the pushing mechanism is a pneumatic device, an air inlet is arranged on the second cylinder, and the pneumatic device presses air into the fourth cavity or the third cavity through the air inlet to drive the second piston to move towards the top of the second cylinder or towards the bottom of the second cylinder.

Optionally, the cross-sectional dimension of the first cylinder is smaller than the cross-sectional dimension of the second cylinder.

Optionally, a cleaning inlet and a cleaning outlet are arranged on the separating component, an inlet channel and an outlet channel are arranged inside the separating component, the cleaning inlet is communicated with the inlet channel, the cleaning outlet is communicated with the outlet channel, both the inlet channel and the outlet channel are communicated with the second cavity, and the cleaning inlet is communicated with a cleaning pipeline for conveying cleaning liquid.

Optionally, the cleaning pipeline comprises a cleaning liquid diversion pipeline, one end of the cleaning liquid diversion pipeline is communicated with the cleaning inlet, the other end of the cleaning liquid diversion pipeline is communicated with the conveying pipeline, a cleaning valve is arranged on the cleaning liquid diversion pipeline, and the cleaning valve can open or cut off a passage of the cleaning liquid diversion pipeline.

Optionally, the intercepting mechanism is an intercepting valve and is arranged on a conveying pipeline in the downstream direction of the backflushing device, the filtering device is a cross-flow filtering machine, the filtering membrane is a ceramic membrane rod, the filtering system further comprises a circulating system arranged outside the filtering device, and the circulating system can convey liquid discharged from an outlet of the filtering device to an inlet of the filtering device in a circulating mode.

The utility model provides a filtration system with recoil device can adjust the piston stroke in the recoil device according to different work condition, makes backwash filtration membrane's pressure stability maintain at required setting value to make its extensive applicability, can reduce system cost.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a filter system with a backflushing device according to the present invention;

reference numerals:

a filtration system 1 with a back flushing device;

a filter device 100; a recoil unit 200;

a filter membrane 101; a first side 102; a second side 103; an inlet 104 of the filter device; an outlet 105 of the filter device;

a first cylinder 201; a first piston 202; a shut-off mechanism 203; an adjustment block 204;

a first cavity 205; a second cavity 206; a delivery conduit 207;

a second cylinder 208; a partition member 209; a second piston 210; a third cavity 211; a fourth cavity 212;

a connecting rod 213; the bottom plate 214 of the second cylinder;

a purge inlet 215; a cleaning outlet 216; an inlet channel 217; an outlet passage 218;

a cleaning liquid diversion conduit 219; the valve 220 is purged.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "disposed," "connected," and the like are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be communicated with each other, and the specific meaning of the above terms in the present embodiment will be understood by those skilled in the art. The references to "upper", "lower", "left", "right", "inner", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is conventionally placed when in use, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a filtering system 1 with a backflushing device, which includes a filtering device 100 and a backflushing device 200, wherein the filtering device includes a filtering chamber and a filtering membrane 101, and the backflushing device 200 includes a first cylinder 201, a first piston 202, a shutoff mechanism 203, a pushing mechanism and an adjusting mechanism.

Specifically, the filter membrane 101 divides the filter cavity into a first side 102 and a second side 103, the second side 103 is communicated with the conveying pipeline 207, the first piston 202 is disposed in the first cylinder 201 and divides an internal space of the first cylinder 201 into a first cavity 205 and a second cavity 206 from top to bottom, wherein the first cavity 205 is communicated with the conveying pipeline 207, so that liquid flowing through the conveying pipeline 207 can enter the first cavity 205, the pushing mechanism can drive the first piston 202 to move in the first cylinder 201 and pressurize the liquid in the first cavity 205, the intercepting mechanism 203 is disposed on a flow path of the liquid, when the intercepting mechanism 203 intercepts the liquid, the pressurized liquid can only flow backwards along the conveying pipeline 207, and the adjusting mechanism can adjust a movement stroke of the pushing mechanism to drive the first piston 202 in the first cylinder 201.

It can be understood that, when the filtering system of the present invention performs the filtering operation, the liquid to be filtered first enters the first side 102 of the filtering chamber from the inlet 104 of the filtering device, a portion of the liquid to be filtered passes through the micropores of the filtering membrane 101 to become the filtered liquid entering the second side 103 of the filtering chamber, the filtered liquid enters the first cavity 205 of the backflushing device 200 through the conveying pipeline 207 and continues to be discharged through the conveying pipeline 207, and another portion of the liquid to be filtered which does not enter the second side 103 continues to flow at the first side 102 and finally flows out of the outlet 105 of the filtering device. It should be noted that the shut-off mechanism 203 is in an open state, i.e. filtered liquid can freely flow through the shut-off mechanism 203, and that the volume of the first chamber 205 is at a maximum, i.e. the first piston 202 is at the initial position of the compression stroke, when the filtering system is performing filtering operation. As the filtration work proceeds, the deposits adhering to the micropores of the filtration membrane 101 gradually increase, and the filtration becomes more and more difficult. Therefore, after a certain period of time has elapsed from the filtration, the filtration membrane 101 needs to be backwashed to improve the filtration performance of the filtration membrane 101.

The utility model discloses a filtration system carries out the recoil during operation, mechanism 203 dams needs to be closed, and start pushing mechanism, the first piston 202 upward movement of pushing mechanism drive, to the filtered liquid compression that stores in first cavity 205, the filtered liquid of compressed gets into the second side 103 of filter chamber through pipeline 207, at this moment, the filtered liquid that is located the compressed of second side 103 has great pressure differential with the filtrate of treating of first side 102, make the filtered liquid of the compressed that is located second side 103 flow backwards fast and pass filtration membrane 101 the micropore entering first side 102, dash out deposit in the filtration membrane 101 micropore. It should be noted that when the first piston 202 reaches the end of the compression stroke, the backflushing operation is completed, and it is necessary to open the shut-off mechanism 203, while the pushing mechanism drives the first piston 202 downward, and finally reaches the start of the compression stroke, and the filter system again enters the filtering operation.

When the operating mode changes, for example filtration system's output requires to change, or treats that the quality of filtering liquid changes, in order to make the pressure stability of recoil device 200 back flush filtration membrane 101 maintain at required setting value, the utility model discloses an embodiment can adjust the piston stroke in the recoil device 200 according to specific operating mode through guiding mechanism, and then adjusts back flush filtration membrane 101's pressure, makes its stable maintenance at required setting value. It should be noted that the pressure at which the filter membrane 101 is backwashed should not be too high, which would cause damage to the filter membrane 101, nor too low, which would otherwise not be effective in washing out the particles deposited within the pores of the filter membrane 101. Therefore, under different working conditions, the pressure of the backwashing filter membrane 101 should be maintained at a pressure value with a good backwashing effect, i.e. a required set value. The utility model discloses an embodiment is according to pushing mechanism's thrust, the recoil device 200 of the reasonable compression volume of configuration for back flush filtration membrane 101's pressure can both be maintained at required setting value under different operating modes.

The utility model provides a filtration system 1 with recoil device can adjust the piston stroke in recoil device 200, through the liquid volume of adjusting the compression release for recoil device 200 back flush filtration membrane 101's pressure can all maintain required setting value under different operating modes, that is to say, under different operating modes, filtration system's filtration membrane 101 can both obtain the back flush of better effect, thereby makes filtration system can both keep good operating condition under different operating modes. Use the utility model provides a filtration system 1 with recoil device, when the operating mode changes, for example filtration system's output requirement changes, perhaps treats the quality change of filtering liquid, does not need adjustment or change filtration system configuration, for example to the recoil device of the different compression capacities of filtration system configuration or the pushing mechanism of different thrust, consequently, its extensive applicability can reduce system cost.

It should be noted that, the adjusting mechanism of the embodiment of the present invention may be configured to make the piston move within different spatial ranges by changing the internal space of the cylinder where the piston is located, so as to passively change the movement stroke of the piston, or directly control the specific movement stroke of the piston, so that the piston can reach different movement strokes controlled within the same spatial range of the cylinder, as long as the pressure of the backwashing filter membrane can be stably maintained at a desired set value by changing the movement stroke of the piston. The utility model discloses an embodiment does not do specific restriction to pushing mechanism yet, can be pneumatic drive arrangement or hydraulic drive device, also can be the crank link mechanism or the cam mechanism of being connected with the piston, as long as can drive the piston and move at the cylinder body to can effectively compress liquid, make it through the refluence wash filtration membrane can.

With continued reference to fig. 1, in an embodiment of the present invention, the recoil device 200 further includes a second cylinder 208, the bottom of the first cylinder 201 is connected to the top of the second cylinder 208 through a partition 209, a second piston 210 is disposed in the second cylinder 208, the second piston 210 partitions the inner space of the second cylinder 208 into a third cavity 211 and a fourth cavity 212 from top to bottom, the first piston 202 and the second piston 210 are connected through a connecting rod 213, and the connecting rod 213 passes through the partition 209 in a sealing manner and can move up and down relative to the partition 209. It will be appreciated that with this arrangement, the pushing mechanism transmits a driving force to the first piston 202 via the second piston 210 and the connecting rod 213, thereby driving the first piston 202 to move in the first cylinder 201 and pressurise the liquid in the first chamber 205, which reduces contamination of the filtered liquid in the first chamber 205 by the pushing mechanism since the first cylinder 201 and the second cylinder 208 are separated by the separating member 209.

In an embodiment of the present invention, the pushing mechanism is a pneumatic device, the second cylinder 208 is provided with an air inlet, the pneumatic device presses air into the fourth cavity 212 or the third cavity 211 through the air inlet, and drives the second piston 210 to move toward the top of the second cylinder 208 or toward the bottom of the second cylinder 208. At this point, the pneumatic gas driving the second piston 210 is always inside the second cylinder 208, avoiding contamination of the filtered liquid inside the first chamber 205. Further, in an embodiment of the present invention, the cross-sectional dimension of the first cylinder 201 is smaller than the cross-sectional dimension of the second cylinder 208. It can be appreciated that the larger cross-sectional dimension of the second cylinder 208 allows the second piston 210 to have a larger force-bearing area, and the larger the force-bearing area of the piston, the smaller the required output thrust of the pneumatic device, which is beneficial to reduce the performance requirement of the pneumatic device and reduce the system cost.

In one embodiment of the present invention, the adjusting mechanism is an adjusting block 204. The adjusting block 204 can be arranged in the first cylinder 201 and/or the second cylinder 208, and the adjusting block 204 can reduce the volume of the first cylinder 201 and/or the second cylinder 208, so that the movement of the piston is limited within a small range, and further the stroke of the movement of the piston is changed, so that the pressure of the backwashing filter membrane 101 is maintained at a required set value under different working conditions. It should be noted that, the embodiment of the present invention does not limit the setting position and the setting number of the adjusting block 204 in the first cylinder 201 and/or the second cylinder 208, and may be the top and/or the bottom in the first cylinder 201, the top and/or the bottom in the second cylinder 208, or even the top and/or the bottom in the first cylinder 201 and the second cylinder 208, as long as the operation stroke of the first piston 202 can be effectively changed according to the working condition.

Further, in an embodiment of the present invention, the adjusting block 204 is fixed on the inner wall of the bottom plate 214 of the second cylinder. The bottom plate 214 of the second cylinder is located at the lowermost end of the recoil assembly 200 for ease of disassembly and assembly. When the adjusting block 204 is arranged on the recoil device 200, the adjusting block 204 is fixed on the inner wall of the bottom plate 214 of the second cylinder body only by opening the bottom plate 214 of the second cylinder body, and then is mounted on the second cylinder body 208 again, so that the recoil device is convenient and quick. When the filtering system is in a filtering operation state, the second piston 210 is located at the bottommost position of the second cylinder 208, and when the adjusting block 204 is mounted on the bottom plate 214 of the second cylinder, the bottommost position of the second cylinder 208 is higher than the bottommost position when the adjusting block 204 is not mounted, and similarly, when the adjusting block 204 is mounted on the bottom plate of the first cylinder 208, the lowest end position of the first piston 202 connected with the second piston 210 through the connecting rod 213 is also higher than the bottommost position when the adjusting block 204 is not mounted, that is, the movement stroke of the first piston 202 is adjusted by the adjusting block 204.

Further, in an embodiment of the present invention, there are at least two adjusting blocks 204, and the moving stroke of the first piston 202 can be adjusted by changing the adjusting blocks 204 fixed on the inner wall of the bottom plate 214 of the second cylinder. It should be noted that the thicknesses and/or shapes of the adjusting blocks 204 may be the same or different, and are not limited herein. By installing the adjusting blocks 204 with different thicknesses or different numbers of adjusting blocks 204 on the inner wall of the bottom plate 214 of the second cylinder, the position of the bottom end of the second cylinder 208 that can be reached by the second piston 210 can be changed, and the movement stroke of the first piston 202 can be adjusted.

With continued reference to fig. 1, in an embodiment of the present invention, a cleaning inlet 215 and a cleaning outlet 216 are disposed on the partition member 209, an inlet channel 217 and an outlet channel 218 are disposed inside the partition member 209, the cleaning inlet 215 is communicated with the inlet channel 217, the cleaning outlet 216 is communicated with the outlet channel 218, both the inlet channel 217 and the outlet channel 218 are communicated with the second cavity 206, and the cleaning inlet 215 is communicated with a cleaning pipeline for conveying a cleaning solution. Through the arrangement, the interior of the second cavity 206 and the lower part of the first piston can be cleaned, so that the interior of the second cavity 206 is clean and sanitary, and liquid is prevented from being polluted. When the filtering system is operated for a period of time, deposits which are difficult to discharge are slowly adhered to the inside of the backflushing device 200, the inside of the backflushing device 200 needs to be cleaned, the cleaning pipeline conveys cleaning liquid to the cleaning inlet 215 on the separating part 209, the cleaning liquid enters the second cavity 206 through the inlet channel 217 inside the separating part 209, and after the second cavity 206 is cleaned by the cleaning liquid, the cleaning liquid flows out of the separating part 209 through the outlet channel 218 and is finally discharged through the outlet channel 218 of the separating part 209.

Further, the utility model discloses an in the embodiment, the washing pipeline includes washing liquid reposition of redundant personnel pipeline 219, washing liquid reposition of redundant personnel pipeline 219 one end with wash entry 215 intercommunication, the other end and pipeline 207 intercommunication are equipped with the cleaning valve 220 on the washing liquid reposition of redundant personnel pipeline 219, the cleaning valve 220 can open or cut off washing liquid reposition of redundant personnel pipeline 219's passageway. When the filtering system is operated for a period of time, the interior of the filtering chamber, the filtering membrane 101, the conveying pipeline 207 and the backflushing device 200 are gradually adhered with deposits which are difficult to discharge, at this time, the operation of the filtering system needs to be stopped, the filtering system is integrally cleaned, the cleaning valve 220 on the cleaning liquid diversion pipeline 219 is opened during cleaning, then the cleaning liquid is conveyed into the first side 102 of the filtering chamber from the inlet 104 of the filtering device, the cleaning liquid cleans the inner wall of the filtering membrane 101, meanwhile, a part of the cleaning liquid penetrates through the micropores of the filtering membrane 101 to enter the second side 103 of the filtering chamber and cleans the second side 103, during the process that the cleaning liquid flows through the conveying pipeline 207, a part of the cleaning liquid enters the first cavity 205 of the backflushing device 200 along with the conveying pipeline 207, and a part of the cleaning liquid enters the second cavity 206 through the cleaning liquid diversion pipeline 219, that is, the cleaning liquid simultaneously enters the first, i.e., the entire first cylinder 201 is cleaned. Through the design, after cleaning liquid is input into the filtering system, all internal spaces in the filtering system, through which the liquid to be filtered and the filtered liquid pass, can be thoroughly cleaned, so that the cleanness and sanitation of the filtering system are effectively ensured, and the pollution to the liquid is avoided. It should be noted that when the filtration system is in both the filtration mode and the back flush mode, the purge valve 220 should be closed to prevent filtered fluid from entering the second chamber 206, which would result in waste and contamination of the filtered fluid.

It should be noted that the present invention does not apply to the specific form of the intercepting mechanism 203, the filtering apparatus 100 and the filtering membrane 101. in an embodiment of the present invention, the intercepting mechanism 203 is an intercepting valve, the filtering apparatus 100 is a cross-flow filter, and the filtering membrane 101 is a ceramic membrane rod.

In this embodiment, the first cavity 205 of the backflushing device 200 and the delivery pipe 207 are connected in series, that is, the filtered liquid flows in from one position of the first cavity 205 through the delivery pipe 207, then flows out from the other position of the first cavity 205, and then continues to enter the delivery pipe 207, but the connection is not limited to this, and the filtered liquid may also flow out from the delivery pipe 207 and be connected to the first cavity 205, that is, a part of the filtered liquid flows into the first cavity 205 through the delivery pipe 207. Further, in an embodiment of the present invention, the shutoff valve is disposed on the conveying pipe 207 in the downstream direction of the backflushing device 200, that is, when the filtering system is in the filtering operation state, the shutoff valve is disposed on the conveying pipe 207 which enters the filtered liquid again after flowing through the first cavity 205.

In this embodiment, the filtration system further comprises a circulation system provided outside the filtration device 100, the circulation system being capable of circulating and conveying the liquid discharged from the outlet 105 of the filtration device to the inlet 104 of the filtration device. After the liquid to be filtered which cannot pass through the filtering membrane 101 is discharged from the filtering device 100, the liquid can enter the filtering device 100 again for filtering through the circulating system, the process is continuously carried out, and the filtering effect on the liquid to be filtered can be improved.

It should be noted that, when the filtering system of the present invention works, the backflushing device 200 can be opened and closed at a certain frequency, and the frequency can be set according to the actual situation, and can be a fixed frequency or a variable frequency.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (10)

1. A filter system with a backflushing device, comprising a filter device and a backflushing device, wherein,

the filtering device comprises a filtering cavity and a filtering membrane, the filtering membrane divides the filtering cavity into a first side and a second side, and the second side is communicated with the conveying pipeline;

recoil device includes first cylinder body, first piston, closure mechanism, pushing mechanism and guiding mechanism, first piston set up in first cylinder body will the inner space top-down of first cylinder body separates for first cavity and second cavity, first cavity with pipeline intercommunication, pushing mechanism can drive first piston is in reciprocating motion is right in the first cylinder body liquid in the first cavity carries out the pressure boost, closure mechanism set up in on the flow path of liquid, closure mechanism is right when liquid dams, after the pressure boost liquid only can be followed pipeline carries out the refluence, guiding mechanism can adjust pushing mechanism drives first piston is in motion stroke in the first cylinder body.

2. The filtering system with the backflushing device according to claim 1, wherein the backflushing device further comprises a second cylinder, the bottom of the first cylinder is connected with the top of the second cylinder through a partition member, a second piston is arranged in the second cylinder, the second piston divides the inner space of the second cylinder into a third cavity and a fourth cavity from top to bottom, the first piston and the second piston are connected through a connecting rod, and the connecting rod penetrates through the partition member in a sealing mode and can move up and down relative to the partition member.

3. The filtration system with backflushing apparatus of claim 2 wherein said adjustment mechanism is an adjustment block.

4. The filter system with a backflushing apparatus according to claim 3, wherein said adjustment block is fixed to an inner wall of a bottom plate of said second cylinder.

5. The filter system with a backflushing apparatus according to claim 4, wherein there are at least two of the adjustment blocks, and the movement stroke of the first piston can be adjusted by changing the adjustment blocks fixed to the inner wall of the bottom plate of the second cylinder.

6. The filtering system with the backflushing device according to claim 2, wherein the pushing mechanism is a pneumatic device, the second cylinder is provided with an air inlet, and the pneumatic device presses air into the fourth cavity or the third cavity through the air inlet to drive the second piston to move towards the top of the second cylinder or towards the bottom of the second cylinder.

7. The filter system with backflushing apparatus according to claim 6 wherein the cross-sectional dimension of said first cylinder is smaller than the cross-sectional dimension of said second cylinder.

8. The filtration system with backflushing apparatus according to claim 2, wherein the partition member is provided with a cleaning inlet and a cleaning outlet, the partition member is internally provided with an inlet passage and an outlet passage, the cleaning inlet is communicated with the inlet passage, the cleaning outlet is communicated with the outlet passage, the inlet passage and the outlet passage are both communicated with the second chamber, and the cleaning inlet is communicated with a cleaning pipe for conveying a cleaning liquid.

9. The filtration system with a backflushing device according to claim 8, wherein said cleaning pipe includes a cleaning liquid flow-dividing pipe, one end of which communicates with said cleaning inlet and the other end of which communicates with said delivery pipe, said cleaning liquid flow-dividing pipe being provided with a cleaning valve capable of opening or blocking a passage of said cleaning liquid flow-dividing pipe.

10. The filtration system with backflushing apparatus according to any one of claims 1 to 9, wherein said shut-off means is a shut-off valve provided on said transport pipe in a downstream direction of said backflushing apparatus, said filtration apparatus is a cross-flow filter, said filtration membrane is a ceramic membrane rod, and said filtration system further comprises a circulation system provided outside said filtration apparatus, said circulation system being capable of circulating a liquid discharged from an outlet of said filtration apparatus to an inlet of said filtration apparatus.