CN113198237A - Compact seawater filter with online cleaning function - Google Patents
Compact seawater filter with online cleaning function Download PDFInfo
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- CN113198237A CN113198237A CN202110319135.4A CN202110319135A CN113198237A CN 113198237 A CN113198237 A CN 113198237A CN 202110319135 A CN202110319135 A CN 202110319135A CN 113198237 A CN113198237 A CN 113198237A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 67
- 239000013535 sea water Substances 0.000 title claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 97
- 238000007789 sealing Methods 0.000 claims description 33
- 239000010865 sewage Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000008213 purified water Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 2
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- 238000005859 coupling reaction Methods 0.000 description 5
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- 239000000919 ceramic Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Abstract
The utility model provides a compact sea water filter with online cleaning function, includes casing subassembly, filter element group spare, cleans subassembly and blowdown subassembly, and filter element group spare is installed in casing subassembly's inside, cleans the inside that the subassembly cooperation set up at filter element group spare for scrape and sweep adnexed impurity on the filter element group spare internal face, blowdown unit mount is in casing subassembly's one end, is used for collecting and discharging cleaning assembly clearance's impurity. Compared with the existing filter, the compact seawater filter has the advantages of more compact structure size, lighter weight and smaller overflow pressure drop under the same overflow flow, and has a self-cleaning function and good maintainability, so that the use scenes and the application fields of the seawater filter are widened.
Description
Technical Field
The invention relates to the technical field of filters for water treatment, in particular to a compact seawater filter with an online cleaning function.
Background
The filter is used as an important device in a water treatment system and is widely applied to the fields of ships, petrochemical engineering, ocean engineering, aerospace, nuclear power and the like. The conventional filter has the problems of small filter area, large volume and weight and the like in unit volume, and is limited by the structural characteristics, solid impurities in a medium are intercepted in the filter cylinder, the impurities are gradually accumulated along with the continuous flow of overflowing, the pressure drop of the filter can be continuously increased, the effective overflowing area is gradually reduced, and the overflowing capacity of the filter is reduced. With the increasing development of ocean resources in China, the technical equipment level of an ocean platform is continuously improved, and stricter requirements on the volume, performance and reliability of ocean engineering equipment are provided, so that the filtration equipment which is compact, efficient, reliable and stable and has an online cleaning function is urgently needed to be developed.
Currently, there are two technical routes for cleaning the filter on line, which are commonly used in the prior art. The utility model provides a be the filter technology of suction formula self-cleaning, its technical characterstic is that adopt a set of small-size suction nozzle that distributes at the filter screen inner wall, through the inside and outside pressure differential of filter core, absorb the impurity of adhesion on the filter screen surface, it is little to have a blowdown volume, advantage such as self-cleaning effect is good, nevertheless owing to the structural constraint who receives the suction nozzle, suction filter is not good enough to overflowing large granule impurity cleaning performance in the medium, the cleaning efficiency is low, and the whole volume of filter and weight are on the large side. The other is candle-type filter technology, which is technically characterized in that a plurality of long and thin cylindrical filter elements are adopted, and the online cleaning function is realized by utilizing the mode of cleaning the long cylindrical filter elements one by using purified water.
Therefore, how to redesign and reform the structure of the existing filter to make it have the technical advantages of compact volume, large flow capacity, low flow resistance, light weight and wet weight is necessary to solve the problem of limited working conditions of the filter.
Disclosure of Invention
The technical purpose of the invention is as follows: compared with the existing filter, the compact seawater filter has the advantages of more compact structural size, lighter weight and smaller overflowing pressure drop under the same overflowing flow, and has a self-cleaning function and good maintainability, so that the use scenes and the application field of the seawater filter are widened.
The technical scheme adopted by the invention for solving the technical problems is as follows: a compact seawater filter with online cleaning function comprises a shell assembly, a filter element assembly, a cleaning assembly and a sewage discharge assembly, wherein the filter element assembly is arranged in the shell assembly, the cleaning assembly is arranged in the filter element assembly in a matching manner and used for scraping impurities attached to the inner wall surface of the filter element assembly, the sewage discharge assembly is arranged at one end of the shell assembly and used for collecting and discharging the impurities cleaned by the cleaning assembly, the shell assembly comprises an inlet-outlet section shell, a filter section shell and a supporting section shell, wherein the inlet-outlet section shell is of a horizontally arranged cylindrical structure, two open ends of the cylindrical inlet-outlet section shell are respectively used as a water inlet and a water outlet and are provided with a water inlet flange and a water outlet flange, two filter section shells are symmetrically arranged on the outer side wall of the cylindrical inlet-outlet section shell, the two filter section shells are coaxially arranged and are both of a hollow conical tubular structure, the large-diameter end of the conical cylindrical filtering section shell is connected to the side wall of the inlet and outlet section shell and is communicated with the inside of the inlet and outlet section shell, the central axis of the filtering section shell is also perpendicular to the central axis of the inlet and outlet section shell, the supporting section shell is also of a hollow cylindrical structure, one end of the supporting section shell is hermetically arranged, and the other end of the supporting section shell is in butt joint with the small-diameter end of one conical cylindrical filtering section shell, so that the inside of the supporting section shell is communicated with the filtering section shell and the inside of the inlet and outlet section shell;
the filter element component comprises a cylindrical filter element cylinder which is sleeved in the shell component, and is coaxially arranged with the filtering section shell and the supporting section shell, one end of the filter element cylinder is of a sealing structure, the other end of the filter element cylinder is of an opening structure, the sealing end is fixed in the supporting section shell through a filter element supporting and positioning ring arranged in the supporting section shell, the opening end is connected with a water outlet plate for sewage discharge through a connecting flange, a plurality of water outlet holes are uniformly arranged on the side wall of the filter element cylinder, a raw water inlet is also arranged at the position of the side wall of the filter element cylinder corresponding to the water inlet flange, an axial cofferdam and a radial cofferdam are connected between the outer circumference of the raw water inlet and the water inlet flange, and the axial cofferdam, the radial cofferdam and the filter element cylinder are used together for dividing the inner space of the shell assembly into a raw water cavity communicated with the water inlet and a purified water cavity communicated with the water outlet;
clean the subassembly and rotate the inside that sets up at a filter element section of thick bamboo to with the coaxial setting of a filter element section of thick bamboo, blowdown subassembly including dirty chamber, blowoff valve, operation hand wheel, drive unit and the sealing unit of collection, wherein, the dirty chamber butt joint of collection sets up the minor diameter end at another circular cone tube-shape filter stage casing, the blowoff valve is installed in the bottom in dirty chamber of collection, the operation hand wheel sets up in housing assembly's the outside, and it is connected with cleaning the subassembly transmission through the drive unit, make the rotation of operation hand wheel can drive whole cleaning assembly and rotate along the axial of a filter element section of thick bamboo, the sealing unit is sealed to be set up in the junction in drive unit and dirty chamber of collection.
Preferably, the water inlet flange and the water outlet flange are both inner flanges embedded inside the inlet and outlet section shell.
Preferably, the top of the housing assembly is further provided with an exhaust port.
Preferably, the top of business turn over section casing is provided with two pressure ports of getting that are linked together with the former water cavity and the water purification chamber of casing assembly inside respectively, and the top of business turn over section casing still is provided with the instrument mount pad that is used for installing instrumentation.
Preferably, the side wall of the filter element cylinder is any one of a punched plate, a wedge-shaped net or a metal woven net.
Preferably, the cleaning assembly comprises two transverse rods arranged in parallel at left and right and an Archimedes helical blade arranged between the two transverse rods, the Archimedes helical blade extends along the axial direction of the filter element cylinder, two ends of the Archimedes helical blade are respectively fixed on the two transverse rods through blade connecting rods, the centers of the two transverse rods are respectively and horizontally provided with a head connecting shaft and a tail connecting shaft, and the head connecting shaft and the tail connecting shaft are coaxially arranged and are respectively rotatably connected with the sealing end of the filter element cylinder and an operating hand wheel through a coupler and a transmission unit.
Preferably, the archimedes spiral blade is further provided with a fixed scraping brush used for contacting with the side wall of the filter element cylinder.
Preferably, the center of the end covers of the sealed ends at the two ends of the filter element cylinder and the water outlet pore plate is provided with a sliding sleeve for supporting the cleaning assembly.
Preferably, the sliding sleeve is made of PTFE material.
Preferably, a shell upper flange is arranged at the small-diameter end of the conical cylindrical filtering section shell in butt joint with the sewage collecting cavity, and the sewage collecting cavity is connected to the shell upper flange through a plurality of lifting bolts and ring nuts.
Has the advantages that:
1. the compact seawater filter with the online cleaning function has the advantages of simple structure, reasonable design, convenience in maintenance and use and self-cleaning capability. The filter has the advantages of compact structure, light weight, small volume, strong flow capacity, small flow pressure drop, light and wet weight, and the like, thereby solving the problem of limited working conditions of the filter and widening the application range of the filter.
2. According to the compact seawater filter with the online cleaning function, the conical cylindrical filtering section shell in the shell component is arranged, so that the flow field of the filtering space in the whole filter is uniform and smooth in transition, and the pressure loss during seawater filtering is reduced; the water inlet flange and the water outlet flange are arranged in an inner flange mode, so that the space in the filter along the direction of a pipeline can be fully utilized, and the whole volume and the occupied space of the filter are reduced as much as possible; the setting of the inside axial cofferdam of casing subassembly and radial cofferdam makes it can mutually support with the raw water import on the filter element section of thick bamboo, divides the inner space of casing subassembly into former water cavity and water purification chamber to the overall arrangement space of filter has been reduced to the biggest restriction, makes its overall structure more compact.
3. According to the compact seawater filter with the online cleaning function, the raw water cavity side and the purified water cavity side of the shell assembly are respectively provided with the pressure taking ports and are led to the pressure gauge and the differential pressure switch, so that the whole device can monitor the overcurrent performance of the filter by reading the difference value of the two pressure gauges or the remote transmission signal of the differential pressure switch in real time. When pressure difference gradually increases to the setting value, the accessible rotates the operation hand wheel, drives and cleans the subassembly and sweeps the filter screen to impurity discharge filter through opening the blowoff valve on the dirty chamber of collection will collect, with the stable flow capacity of ensureing the filter, thereby showing and having reduced the filter screen and blockked up the risk that leads to flow decline and flow resistance to rise.
4. According to the compact seawater filter with the online cleaning function, the Archimedes spiral blade is arranged in the cleaning assembly, and when the operating hand wheel rotates, the torque is transmitted to the cleaning assembly through the transmission unit; when the Archimedes spiral blade rotates around the axis, the edge of the blade continuously scrapes and sweeps impurities on the inner surface of the filter screen, and the impurities are gathered towards the direction of the sewage collection cavity by means of axial thrust generated by the rotation of the Archimedes spiral blade. The cleaning device has the advantages of high cleaning efficiency of the whole device, good cleaning effect, shortened sewage discharge time and reduced sewage discharge capacity.
5. According to the compact seawater filter with the online cleaning function, the sewage discharge assembly integrates the functions of sewage collection, sewage discharge, sealing, transmission and the like, and is connected with the shell assembly by adopting the eyebolt structure, so that the sewage discharge assembly is convenient to disassemble, assemble and maintain.
Drawings
FIG. 1 is a schematic view of the overall construction of a filter according to the present invention;
FIG. 2 is a cross-sectional top view of FIG. 1;
FIG. 3 is a front view of the housing assembly of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the cut-away view of FIG. 3 along direction C-C;
FIG. 6 is a schematic front view of the construction of the filter element assembly of the present invention;
FIG. 7 is a schematic top view of the cut-away structure of FIG. 6 taken along line B-B;
FIG. 8 is a left side view of FIG. 6;
FIG. 9 is a schematic view of the sweeping assembly of the present invention;
FIG. 10 is a schematic view of the structure of the soil exhaust assembly of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10;
reference numerals: 1. the filter comprises a shell assembly, 101, an inlet and outlet section shell, 102, a filter section shell, 103, a support section shell, 104, a water inlet flange, 105, an axial cofferdam, 106, a radial cofferdam, 107, a filter element support positioning ring, 108, an exhaust port, 109, a pressure taking port, 110, an instrument mounting seat, 111, a shell upper flange, 2, a filter element assembly, 201, a filter element cylinder, 202, a water outlet pore plate, 203, a raw water inlet, 204, a sliding sleeve, 3, a cleaning assembly, 301, a cross rod, 302, an Archimedes spiral blade, 303, a head connecting shaft, 304, a tail connecting shaft, 305, a blade connecting rod, 306, a coupling female head, 4, a sewage discharge assembly, 401, a sewage collection cavity, 402, a sewage discharge valve, 403, an operation hand wheel, 404, a connecting shaft, 405, a coupling male head, 406, a connecting shaft sealing sleeve, 407, a ceramic bearing, 408 and a bearing gland.
Detailed Description
The technical solution of the present invention will be further explained and explained in detail with reference to the drawings and the specific embodiments.
As shown in the figure, a compact sea water filter with online cleaning function, include casing subassembly 1, filter element group spare 2, clean subassembly 3 and blowdown subassembly 4, filter element group spare 2 is installed in casing subassembly 1's inside, cleans the inside that subassembly 3 cooperation set up at filter element group spare 2 for scrape and sweep adnexed impurity on the 2 internal faces of filter element group spare, blowdown subassembly 3 is installed in casing subassembly 1's one end, is used for collecting and discharging cleaning the impurity that subassembly 3 cleared up.
The shell assembly 1 comprises an inlet and outlet section shell 101, a filtering section shell 102 and a supporting section shell 103, a water inlet flange 104, a water outlet flange, an axial cofferdam 105, a radial cofferdam 106 and a filter element supporting and positioning ring 107, and the whole shell assembly 1 can be manufactured by an integral casting or welding method. Wherein, the inlet and outlet section shell 101 is a horizontally arranged cylindrical structure, two open ends of the cylindrical inlet and outlet section shell 101 are respectively used as a water inlet and a water outlet and are provided with a water inlet flange 104 and a water outlet flange, two filter section shells 102 are symmetrically arranged on the left and right of the outer side wall of the cylindrical inlet and outlet section shell 101, the two filter section shells 102 are coaxially arranged and are both hollow conical cylindrical structures, the large diameter end of the conical cylindrical filter section shell 102 is connected on the side wall of the inlet and outlet section shell 101 and is communicated with the inside of the inlet and outlet section shell 101, the central axis of the filter section shell 102 is also vertical to the central axis of the inlet and outlet section shell 101, the support section shell 103 is also hollow cylindrical structure, one end of the support section shell 103 is hermetically arranged, the other end is butt-jointed and arranged at the small diameter end of one of the conical cylindrical filter section shell 102, so that the inside of the support section shell 103 is communicated with the inside of the filter section shell 102 and the inlet and the outlet and outlet section shell 101, an air outlet 108 is further formed in the top of the shell assembly 1, two pressure taking ports 109 which are respectively communicated with the raw water cavity and the purified water cavity inside the shell assembly 1 are formed in the top of the inlet and outlet section shell 101, and an instrument mounting seat 110 for mounting a detection instrument is further formed in the top of the inlet and outlet section shell 101. In the structure of the shell assembly 1, the water inlet flange and the water outlet flange are used as inner flanges and are embedded at the inner side of the inlet-outlet section shell 101 so as to fully utilize the space; the inlet and outlet section shell 101 is communicated with the filtering section shells 102 on the left side and the right side of the inlet and outlet section shells to adapt to the characteristics of the flow field in the filter, reduce pressure loss and reduce equipment weight; a filter element supporting and positioning ring 107 is annularly arranged in the supporting section shell 103 and is used for realizing the axial and radial positioning of the filter element assembly 2; the shell component 1 is respectively provided with a pressure taking port 109 at the raw water cavity side and the purified water cavity side for detecting the pressure difference at the water inlet side and the water outlet side of the filter element component 2; the interior of the housing assembly 1 is provided with a set of axial cofferdams 105 and radial cofferdams 106 according to the size of the raw water inlet 203 on the filter element cartridge 201. An exhaust port 108 is arranged at the highest point of the housing assembly 1 according to the actual installation angle; all parts in the shell assembly 1 are integrally machined after being welded, and the sealing groove, the inner and outer circular surfaces, the water inlet and outlet flanges and the positioning surface of the filter element supporting and positioning ring 107 of the upper flange 111 of the shell are machined, so that the external connection size and the internal filter element matching size of the filter are ensured.
The filter element assembly 2 comprises a cylindrical filter element cylinder 201, the filter element cylinder 201 is sleeved in the shell assembly 1 and is coaxially arranged with the filter section shell 101 and the support section shell 103, one end of the filter element cylinder 201 is of a sealing structure, the other end of the filter element cylinder 201 is of an opening structure, the sealing end is fixed in the support section shell 101 through a filter element support positioning ring 107 arranged in the support section shell 103, the opening end is connected with a water outlet hole plate 202 for discharging sewage through a connecting flange, namely a plurality of countersunk holes are processed on the water outlet hole plate 202 and are connected with the connecting hole through screws, a plurality of water outlet holes are uniformly formed on the side wall of the filter element cylinder 201, a raw water inlet 203 is also formed on the side wall of the filter element cylinder 201 corresponding to the water inlet flange 104, an axial cofferdam 105 and a radial cofferdam 106 are connected between the outer circumference of the raw water inlet 203 and the water inlet flange 104, the axial cofferdam 105, the radial cofferdam 106 and the filter element cylinder 201 are together, the inner space of the shell assembly 1 is divided into a raw water cavity communicated with the water inlet and a purified water cavity communicated with the water outlet; the side wall of the filter element cylinder 201 can select filter elements in different forms such as a punching plate, a wedge-shaped net or a metal woven net according to the characteristics of filtering precision and filtering media, holes are formed in the centers of end covers of the two sealed ends of the filter element cylinder 201 and the water outlet hole plate 202, a sliding sleeve 204 used for supporting the cleaning assembly 3 is installed, and the sliding sleeve 204 is made of materials with low friction coefficient, self-lubrication, corrosion resistance and characteristics such as PTFE (polytetrafluoroethylene).
The cleaning assembly 3 comprises two transverse rods 301 arranged in parallel at left and right, Archimedes spiral blades 302 arranged between the two transverse rods 301, a head connecting shaft 303, a tail connecting shaft 304 and blade connecting rods 305, and the cleaning assemblies are manufactured by welding; the Archimedes spiral blade 302 extends along the axial direction of the filter element cylinder 201, two ends of the Archimedes spiral blade 302 are respectively fixed on the two cross bars 301 through blade connecting rods 305, and the Archimedes spiral blade 302 is manufactured by welding a plurality of pieces after being processed by a single sheet metal or obtained by a continuous rolling method. The outer diameter of the blade is determined according to the size of the inner diameter of the filter element cylinder 201, and a scraping brush can be fixedly arranged on the blade according to different filtering precision and filtering media so as to ensure the scraping and cleaning effect; the centers of the two cross rods 301 are respectively and horizontally provided with a head connecting shaft 303 and a tail connecting shaft 304, the head connecting shaft 303 and the tail connecting shaft 304 are coaxially arranged and are respectively and rotationally connected with the sealing end of the filter element cylinder 201 and the operating handwheel through a coupler and a transmission unit. The parallelism between the two cross rods 301 and the coaxiality of the head connecting shaft 303 and the tail connecting shaft 304 are ensured by the aid of the tooling during welding of the cross rods 301, one end of the head connecting shaft 303 is matched with the coupler female head 306, the end is milled flat and used for transmitting driving torque, and the tail connecting shaft 304 is matched with the sliding sleeve 204 and used for supporting and positioning.
The blowdown assembly 4 comprises a blowdown collecting cavity 401, a blowdown valve 402, an operating hand wheel 403, a transmission unit, a sealing unit and the like which are obtained by welding or assembling; wherein, dirty chamber 401 butt joint sets up the minor diameter end at another circular cone tube-shape filter segment casing 102, and blowoff valve 402 is installed in the bottom in dirty chamber 401 of collection, and operation hand wheel 403 sets up in the outside of casing subassembly 1, and it is connected with cleaning subassembly 3 transmission through the drive unit, makes the rotation of operation hand wheel 403 can drive whole cleaning subassembly 3 and rotate along the axial of filter element section of thick bamboo 201, and the sealed unit is sealed to be set up in the junction of drive unit and dirty chamber 401 of collection. The small diameter end of the conical cylindrical filter section shell 102 butted with the sewage collecting cavity 401 is provided with a shell upper flange 111, and the sewage collecting cavity 401 is connected to the shell upper flange 111 through a plurality of lifting bolts and ring nuts. In the transmission unit and the sealing unit, a connecting shaft 404 is arranged between an operating handwheel 403 and a male head 405 of a coupler and is used for transmitting torque; the connecting shaft sealing sleeve 406 is fixed on the end cover of the dirt collecting cavity 401 by a welding method, and a group of sealing pieces are arranged inside the connecting shaft sealing sleeve 406 and used for sealing a gap between the connecting shaft sealing sleeve 406 and the connecting shaft 404; the ceramic bearing 407 is used for supporting the rotation of the connecting shaft 404, reducing the friction coefficient and ensuring the rotation precision, the outer ring of the ceramic bearing 407 is matched with the connecting shaft sealing sleeve 406, the inner ring of the ceramic bearing 407 is matched with the connecting shaft 404, and the axial positioning is realized through the bearing pressing cover 408. A drain valve 402 is installed on the sewage collecting chamber 401 by welding or assembling for discharging impurities inside the filter. The connecting shaft 404 is supported by a corrosion-resistant bearing, so that the smooth operation and the small rotation resistance are realized; a group of sealing elements are arranged in the connecting shaft sealing sleeve 406 to realize dynamic sealing of the rotation of the connecting shaft 404; adopt coupling female head 306, coupling male head 405 integrated configuration to transmit torque, the operation is reliable and stable, and the dismouting of being convenient for.
The invention discloses a compact seawater filter with an online cleaning function, which has the following characteristics:
1) the shell component is made of corrosion-resistant materials such as stainless steel, titanium alloy, copper alloy, aluminum alloy or nickel-based alloy by a casting or welding method, and the axial section of the shell component is a variable section, so that the filter meets the internal smoothness characteristic of the filter and is beneficial to reducing pressure loss.
2) The shell assembly is matched with a raw water inlet of the filter element cylinder through the axial cofferdam and the radial cofferdam, the interior of the shell assembly is divided into a raw water cavity and a purified water cavity, and raw water enters the purified water cavity after being filtered by the filter screen; and the axial cofferdam and the radial cofferdam are provided with holes according to the filtering precision, so that the effective filtering area is increased.
3) The shell assembly is provided with pressure taking ports on the raw water cavity side and the water purification cavity side, is connected with the pressure gauge and the differential pressure switch through a pressure taking pipeline and is used for monitoring the pressure loss of the filter in the running process in real time, and remotely transmits a signal of the differential pressure switch to be used as the indication for cleaning the filter.
4) The cleaning assembly is obtained by welding Archimedes spiral blades or continuously rolling plates, and can scrape impurities adhered to the surface of the filter screen through rotation and collect the impurities to the direction of the sewage collection cavity through axial thrust generated when the Archimedes spiral blades rotate.
5) The pollution discharge assembly is obtained by integral casting or welding and is connected with the shell assembly through the lifting bolt and the ring nut, so that the quick assembly, disassembly and maintenance are facilitated; the dirt collecting cavity is arranged on one side of the filter element assembly, and impurities on the surface of the filter element are collected to the dirt collecting cavity under the combined action of an internal flow field, gravity and a scraping and sweeping conveying device during self-cleaning and are discharged through the dirt discharging device in due time.
The filter assembly is formed by assembling a shell assembly, a filter element assembly, a cleaning assembly, a pollution discharge assembly and the like. During assembly, firstly, the sliding sleeve is assembled at the tail part of the filter element cylinder, and the cleaning assembly (with the coupler female head removed) is assembled inside the filter element assembly, so that a tail connecting shaft of the cleaning assembly is matched with the sliding sleeve; then, matching the other sliding sleeve with a head connecting shaft of the sweeping assembly; and installing a water outlet pore plate, aligning a positioning notch on the water outlet pore plate with a positioning notch on the connecting flange, connecting the water outlet pore plate and the connecting flange by using a bolt, and then assembling the coupler female head to the head connecting shaft of the cleaning assembly. After the cleaning assembly and the filter element assembly are assembled, the two assemblies are assembled into a shell assembly, so that the outer diameter of the tail end of the filter element cylinder is matched with the inner diameter of the filter element supporting and positioning ring, the end face of one end of the filter element cylinder is matched with the positioning step face of the filter element supporting and positioning ring, and at the moment, the end face of the water outlet hole plate is ensured to be flush with the end face of the upper flange of the shell; when the blowdown assembly is assembled, firstly, the sealing ring is assembled inside a connecting shaft sealing sleeve, the connecting shaft penetrates through the sealing sleeve, and the bearing is installed on a connecting shaft sealing sleeve bearing seat; the clamp spring for the mounting shaft is used for axially positioning the connecting shaft; fixing the bearing gland on the connecting shaft sealing sleeve through a bolt; then installing an operating hand wheel and a coupling male head; connecting the assembled sewage discharge assembly to the shell through an eyebolt and a ring nut; and a pressure gauge is installed and connected with the pressure taking port, and an exhaust valve is installed.
When the filter is normally filtered, raw water enters a raw water cavity consisting of a filter element cylinder and a cofferdam through a water inlet, is filtered from inside to outside from a filter element, then enters a purified water cavity and flows out from a water outlet. Along with the continuous impurity accumulation of the overflowing flow, the pressure difference between the raw water cavity and the purified water cavity can be observed from the pressure gauge. When the pressure difference reaches a set value, the cleaning assembly can be driven by rotating the operating hand wheel to clean impurities on the inner surface of the filter element, the impurities are gathered to the dirt collecting cavity, the drain valve on the dirt collecting cavity is opened to discharge the impurities out of the filter so as to reduce the pressure loss of the filter, the flow passing capacity of the filter is recovered, and the filter is cleaned on line.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a compact seawater filter with online cleaning function, includes casing subassembly, filter element group spare, cleans subassembly and blowdown subassembly, and the filter element group spare is installed in casing subassembly's inside, cleans the inside that the subassembly cooperation set up at the filter element group spare for scrape and sweep adnexed impurity on the filter element group spare internal face, blowdown unit mount is in casing subassembly's one end, is used for collecting and discharging cleaning assembly clearance's impurity, its characterized in that: the shell component comprises an inlet-outlet section shell, filter section shells and a supporting section shell, wherein the inlet-outlet section shell is of a horizontally arranged cylindrical structure, two open ends of the cylindrical inlet-outlet section shell are respectively used as a water inlet and a water outlet and are provided with a water inlet flange and a water outlet flange, the two filter section shells are symmetrically arranged on the left side and the right side of the outer side wall of the cylindrical inlet-outlet section shell, the two filter section shells are coaxially arranged and are of hollow conical tubular structures, the large-diameter end of each conical tubular filter section shell is connected to the side wall of the inlet-outlet section shell and is communicated with the inside of the inlet-outlet section shell, the central axis of each filter section shell is also perpendicular to the central axis of the inlet-outlet section shell, the supporting section shell is also of a hollow cylindrical structure, one end of each supporting section shell is arranged in a sealing mode, the other end of each supporting section shell is arranged at the small-diameter end of one conical tubular filter section shell in an abutting mode, the inside of the supporting section shell is communicated with the inside of the filtering section shell and the inside of the inlet and outlet section shell;
the filter element component comprises a cylindrical filter element cylinder which is sleeved in the shell component, and is coaxially arranged with the filtering section shell and the supporting section shell, one end of the filter element cylinder is of a sealing structure, the other end of the filter element cylinder is of an opening structure, the sealing end is fixed in the supporting section shell through a filter element supporting and positioning ring arranged in the supporting section shell, the opening end is connected with a water outlet plate for sewage discharge through a connecting flange, a plurality of water outlet holes are uniformly arranged on the side wall of the filter element cylinder, a raw water inlet is also arranged at the position of the side wall of the filter element cylinder corresponding to the water inlet flange, an axial cofferdam and a radial cofferdam are connected between the outer circumference of the raw water inlet and the water inlet flange, and the axial cofferdam, the radial cofferdam and the filter element cylinder are used together for dividing the inner space of the shell assembly into a raw water cavity communicated with the water inlet and a purified water cavity communicated with the water outlet;
clean the subassembly and rotate the inside that sets up at a filter element section of thick bamboo to with the coaxial setting of a filter element section of thick bamboo, blowdown subassembly including dirty chamber, blowoff valve, operation hand wheel, drive unit and the sealing unit of collection, wherein, the dirty chamber butt joint of collection sets up the minor diameter end at another circular cone tube-shape filter stage casing, the blowoff valve is installed in the bottom in dirty chamber of collection, the operation hand wheel sets up in housing assembly's the outside, and it is connected with cleaning the subassembly transmission through the drive unit, make the rotation of operation hand wheel can drive whole cleaning assembly and rotate along the axial of a filter element section of thick bamboo, the sealing unit is sealed to be set up in the junction in drive unit and dirty chamber of collection.
2. The compact seawater filter with online cleaning function of claim 1, wherein: the water inlet flange and the water outlet flange are inner flanges embedded inside the inlet and outlet section shell.
3. The compact seawater filter with online cleaning function of claim 1, wherein: the top of the shell component is also provided with an exhaust port.
4. The compact seawater filter with online cleaning function of claim 1, wherein: the top of business turn over section casing is provided with two pressure ports of getting that are linked together with the former water cavity and the water purification chamber of casing assembly inside respectively, and the top of business turn over section casing still is provided with the instrument mount pad that is used for installing instrumentation.
5. The compact seawater filter with online cleaning function of claim 1, wherein: the side wall of the filter element cylinder is any one of a punching plate, a wedge-shaped net or a metal woven net.
6. The compact seawater filter with online cleaning function of claim 1, wherein: the cleaning assembly comprises two transverse rods arranged in parallel at left and right and an Archimedes helical blade arranged between the two transverse rods, the Archimedes helical blade extends along the axial direction of the filter element cylinder, two ends of the Archimedes helical blade are respectively fixed on the two transverse rods through blade connecting rods, the centers of the two transverse rods are respectively and horizontally provided with a head connecting shaft and a tail connecting shaft, the head connecting shaft and the tail connecting shaft are coaxially arranged, and the head connecting shaft and the tail connecting shaft are respectively and rotationally connected with the sealing end of the filter element cylinder and an operating hand wheel through a coupler and a transmission unit.
7. The compact seawater filter with online cleaning function of claim 6, wherein: the Archimedes spiral blade is also provided with a fixed scraping brush used for contacting with the side wall of the filter element cylinder.
8. The compact seawater filter with online cleaning function of claim 1, wherein: and the centers of the end covers of the sealed ends at the two ends of the filter element cylinder and the water outlet pore plate are respectively provided with a sliding sleeve for supporting the cleaning assembly.
9. The compact seawater filter with online cleaning function of claim 8, wherein: the sliding sleeve is made of PTFE material.
10. The compact seawater filter with online cleaning function of claim 1, wherein: the small-diameter end of the conical cylindrical filtering section shell in butt joint with the dirt collecting cavity is provided with a shell upper flange, and the dirt collecting cavity is connected to the shell upper flange through a plurality of lifting bolts and ring nuts.
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