CN111151053A - Back flush filter - Google Patents
Back flush filter Download PDFInfo
- Publication number
- CN111151053A CN111151053A CN202010115760.2A CN202010115760A CN111151053A CN 111151053 A CN111151053 A CN 111151053A CN 202010115760 A CN202010115760 A CN 202010115760A CN 111151053 A CN111151053 A CN 111151053A
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- Prior art keywords
- water
- filter
- backwashing
- water flow
- filter element
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 292
- 238000011001 backwashing Methods 0.000 claims abstract description 82
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 238000007790 scraping Methods 0.000 claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 23
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 238000000746 purification Methods 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 27
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 239000000306 component Substances 0.000 claims description 8
- 239000008358 core component Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000011045 prefiltration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
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
- B01D29/11—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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a backwashing filter. The filter comprises a filter cup body, an end cover with a water inlet and a water outlet is arranged at the upper end of the filter cup body, a sewage discharge assembly is arranged at the lower end of the filter cup body, a filter core assembly is arranged on the inner side of the filter cup body, a scraping and washing frame body is sleeved on the circumferential outer side of the filter core assembly, a raw water cavity is arranged between the circumferential outer side of the filter core assembly and the circumferential inner side of the filter cup body, a water purification cavity is arranged on the circumferential inner side of the filter core assembly, a backwashing cavity is arranged in the end cover and is connected with the backwashing cavity through a one-way flow guide structure arranged at the upper end of the filter core assembly, a backwashing water flow switching assembly is arranged on the end cover, and a scraping and washing driving mechanism capable of driving the scraping and washing frame body to rotate circumferentially when the. The invention has the advantages that: simple structure, and convenient and fast switching of the flow direction of water flow in the backwashing and filtering states.
Description
Technical Field
The invention relates to the field of filter equipment, in particular to a backwashing filter.
Background
Because the problem of environmental pollution is getting worse and worse, the water filter is more and more favored as a water filter device, wherein the pre-filter is a reliable impurity filter device, is a first coarse filter device for water used in a whole house, can effectively filter silt, rust and large granular substances in tap water, the precision range of the pre-filter screen is different from 5-30 micrometers according to different brands and models, and mainly removes precipitated impurities and bacteria, microorganism remains, iron rust, sand mud and other granular impurities larger than 5 micrometers generated by a pipeline, so that a human body and skin are prevented from being injured; the conventional pre-filter does not have a back-washing function, so that dirt particles in water are hung in a filtering material of the filter, the filtering material is doped with the filtering material along with the time, the filtering material is easily blocked, the filtering water quantity of the filter is influenced, and the filtering effect of the filtering material is even reduced.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a backwash pre-filter [ CN201420630652.9], which comprises a backwash valve, wherein the backwash valve is provided with a water inlet and a water outlet that are opened horizontally, the upper end of the backwash valve is provided with a backwash valve body port, and the backwash valve body port is sequentially provided with a backwash valve core, a backwash valve sealing ring, a backwash valve body top cover and a backwash knob from bottom to top; the lower end of the back flush valve is connected with a filtering cylinder body, and a filter element is arranged in the filtering cylinder body; the lower end of the filtering cylinder body is connected with a sewage discharge valve body.
Above-mentioned scheme has solved current filter to a certain extent and has carried out dismantlement trouble, awkward problem when inside filtering material is clean, but this scheme still has a great deal of not enoughly, for example: the backwashing structure is complex, and the flow direction of water flow in the backwashing and filtering states is inconvenient to switch.
Disclosure of Invention
The invention aims to solve the problems and provides a backwashing filter which is reasonable in design, simple in structure and convenient and fast in water flow direction switching.
In order to achieve the purpose, the invention adopts the following technical scheme: the backwashing filter comprises a filtering cup body, an end cover with a water inlet and a water outlet is arranged at the upper end of the filtering cup body, a sewage discharge component with a sewage discharge outlet is arranged at the lower end of the filtering cup body, a cylindrical filter element assembly is movably arranged on the inner side of the periphery of the filter cup body, a scraping and washing frame body is sleeved on the outer side of the periphery of the filter element assembly, an annular raw water cavity is arranged between the outer side of the periphery of the filter element assembly and the inner side of the periphery of the filter cup body, and the circumferential inner side of the filter element component is provided with a water purification cavity, the end cover is internally provided with a back washing cavity, the water purification cavity is communicated with the back washing cavity through a one-way flow guide structure arranged at the upper end of the filter element component, and the end cover is provided with a back washing water flow switching component used for communicating the back washing cavity with the water inlet or the water outlet, and a scraping and washing driving mechanism which can drive the scraping and washing frame body to rotate circumferentially when the water inlet is communicated with the backwashing cavity is arranged between the backwashing water flow switching component and the filter element component. When normal filtration is carried out, the channel between the water inlet and the raw water cavity is closed by rotating the backwashing water flow switching assembly, and the channel between the raw water cavity and the water outlet is opened, so that the flow direction of water flow in a filtration state can be realized.
In the backwash filter, the backwash water flow switching assembly comprises a water flow switching body which is rotatably arranged on the circumferential inner side of the end cover, the water flow switching body is connected with a water flow direction switching driving assembly which can drive the water flow switching body to rotate in the circumferential direction of the end cover, the backwash cavity is formed in the water flow switching body, and a water flow direction switching structure which can enable the backwash cavity to be communicated with the water inlet or the water outlet when the water flow switching body rotates is arranged in the water flow switching body. The water flow direction switching body can synchronously rotate by rotating the water flow direction switching driving assembly, so that the water flow direction switching structure can seal a channel between the backwashing cavity and the water inlet or the water inlet, the linkage performance is good, and the operation is simple.
In the backwash filter, the water flow direction switching drive assembly comprises a switching body connecting part which is connected with the upper end of the water flow switching body and extends to the circumferential outer side of the end cover, and the switching body connecting part is connected with the backwash switching knob; alternatively, the switching body connecting portion is connected to the electromotive driver. The water flow state can be quickly switched by utilizing the backwashing switching knob or the electric driver, so that time and labor are saved.
In the above backwash filter, the water flow direction switching structure includes a water inlet portion and a water outlet portion that are provided on the water flow switching body and respectively communicate with the backwash chamber, and the water inlet portion and the water outlet portion are disposed in an L-shaped staggered manner and communicate with each other to form the backwash chamber, the water inlet portion corresponds to the first water retaining portion, the water outlet portion corresponds to the second water retaining portion, and when the water inlet portion communicates with the water inlet, the first water retaining portion is blocked at the end of the water outlet, or when the water outlet portion communicates with the water outlet, the second water retaining portion is blocked at the end of the water inlet. The arrangement can ensure that the back washing cavity is only communicated with one of the water inlet or the water outlet.
In the backwashing filter, the lower end of the water flow switching body is provided with a backwashing force gear piece positioned at the circumferential outer side of the upper end of the filter core component, the upper end of the backwashing force gear piece is provided with a plurality of filtering flow guide holes which can communicate the water inlet with the raw water cavity when the water outlet part is communicated with the water outlet and the second water retaining part is blocked at the end part of the water inlet, and the circumferential inner side of the lower end of the backwashing force gear piece is provided with backwashing flow guide holes which can communicate the backwashing cavity with the raw water cavity when the water inlet part is communicated with the water inlet and the first water retaining part is blocked at the end part. The filtering diversion holes are convenient for water flow to enter the raw water cavity from the water inlet, and the back washing diversion holes can enable the water flow to impact the back washing cavity towards the back washing force gear piece so as to drive the scraping and washing frame body to rotate.
In the backwash filter, the scraping drive mechanism comprises a back-flushing gear piece tooth opening part formed on the circumferential outer side of the lower end of the back-flushing gear piece, a water conservancy rotating piece corresponding to the back-flushing diversion hole is rotatably arranged between the back-flushing gear piece tooth opening part and the back-flushing diversion hole, and the water conservancy rotating piece is connected with the scraping frame body. Because recoil force gear spare is relatively fixed, thereby when the water conservancy rotating member produced reverse driving force and made the scraping and washing support body rotate when the impact of rivers was at recoil force gear spare tooth mouth portion.
In the back flush filter, the water conservancy rotating part is in an impeller shape, the lower end of the tooth opening part of the back flush gear is provided with an opening, and the opening faces the raw water cavity.
In the above backwash filter, the filter element assembly includes a cylindrical filter element cylinder body with a plurality of through holes in the circumferential direction, the upper and lower ends of the filter element cylinder body are respectively sealed, a filter screen is sleeved on the circumferential outer side of the filter element cylinder body, and the scraping and washing frame body is respectively contacted with the circumferential inner wall of the filter cup body and/or the circumferential outer wall of the filter screen.
In foretell back flush filter, one-way water conservancy diversion structure is including setting up the mounting hole in filter core barrel upper end, and one-way rivers separation piece is worn to be equipped with in the activity of mounting hole, and one-way rivers separation piece one end extends to the filter core barrel outside, and the other end is located the filter core barrel inboard, and one end that one-way rivers separation piece is located the filter core barrel outside is equipped with the manger plate portion that leans on in the mounting hole week to the outside, and has on the one-way rivers separation piece and enable manger plate portion and keep leaning on the elastic support structure who leans. The one-way flow guide structure can ensure that water in the water purification cavity enters the backwashing cavity, and water in the backwashing cavity cannot enter the water purification cavity.
In the above backwash filter, the elastic support structure includes an elastic member sleeved on the one-way water flow blocking member at one end of the inner side of the filter element cylinder, and one end of the elastic member acts on the inner side of the filter element cylinder, and the other end acts on a limiting portion arranged at one end of the one-way water flow blocking member far away from the water retaining portion.
Compared with the prior art, the invention has the advantages that: simple structure through the back flush rivers switching module and the mutual cooperation of one-way water conservancy diversion structure, can realize the flow direction of rivers under normal filtration state and the back flush state, not only the linkage is better, the simple operation moreover, it is more convenient to use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a structural cross-sectional view of the present invention;
FIG. 3 is a vertical cross-sectional view of the direction of water flow during filtration according to the present invention;
FIG. 4 is a cross-sectional view taken transversely to the direction of water flow during filtration in accordance with the present invention;
FIG. 5 is a vertical sectional view showing the direction of water flow during backwashing according to the present invention;
FIG. 6 is a cross sectional view showing the direction of water flow during backwashing according to the present invention.
In the figure, a filter cup body 1, a raw water cavity 11, an end cover 2, a water inlet 21, a water outlet 22, a backwashing cavity 23, a sewage discharge assembly 3, a sewage discharge outlet 31, a filter element assembly 4, a scraping and washing frame body 41, a water purification cavity 42, a filter element cylinder 43, a filter screen 44, a one-way flow guide structure 5, a mounting hole 51, a one-way water flow blocking member 52, a water blocking portion 53, an elastic support structure 54, an elastic member 541, a limiting portion 542, a backwashing water flow switching assembly 6, a water flow switching body 61, a water flow direction switching drive assembly 62, a switching body connecting portion 621, a backwashing switching knob 622, an electric driver 623, a water flow direction switching structure 63, a water inlet portion 631, a water outlet portion 632, a first water blocking portion 633, a second water blocking portion 634, a scraping and washing drive mechanism 7, a backwashing gear tooth opening portion 71, a backwashing water conservancy rotating member 72, a backwashing gear member 8, a.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-6, the backwashing filter comprises a filter cup body 1, an end cover 2 with a water inlet 21 and a water outlet 22 is arranged at the upper end of the filter cup body 1, a sewage discharge assembly 3 with a sewage discharge outlet 31 is arranged at the lower end of the filter cup body 1, a cylindrical filter element assembly 4 is movably arranged at the circumferential inner side of the filter cup body 1, a scraping and washing frame body 41 is sleeved at the circumferential outer side of the filter element assembly 4, an annular raw water cavity 11 is arranged between the circumferential outer side of the filter element assembly 4 and the circumferential inner side of the filter cup body 1, a purified water cavity 42 is arranged at the circumferential inner side of the filter element assembly 4, a backwashing cavity 23 is arranged in the end cover 2, the purified water cavity 42 is communicated with the backwashing cavity 23 through a one-way diversion structure 5 arranged at the upper end of the filter element assembly 4, a backwashing water flow switching assembly 6 used for communicating the backwashing cavity 23 with the water inlet 21 or the water outlet And a scraping drive mechanism 7 for rotating the scraping frame body 41 in the circumferential direction. When normal filtration is carried out, the channel between the water inlet 21 and the raw water cavity 11 is closed by rotating the backwash water flow switching assembly 6, and the channel between the raw water cavity 11 and the water outlet 22 is opened, so that the flow direction of water flow in a filtration state can be realized.
The backwash water flow switching assembly 6 comprises a water flow switching body 61 rotatably arranged on the circumferential inner side of the end cover 2, the water flow switching body 61 is connected with a water flow direction switching driving assembly 62 capable of driving the water flow switching body 61 to rotate in the circumferential direction of the end cover 2, the backwash cavity 23 is formed in the water flow switching body 61, and a water flow direction switching structure 63 capable of communicating the backwash cavity 23 with the water inlet 21 or the water outlet 22 when the water flow switching body 61 rotates is arranged in the water flow switching body 61. The outer arc shape of the water flow direction switching structure 63 is attached to the inner wall of the end cap 2.
Further, the water flow direction switching drive assembly 62 includes a switching body connecting portion 621 connected to the upper end of the water flow switching body 61 and extending to the circumferential outer side of the end cap 2, and the switching body connecting portion 621 is connected to the backwash switching knob 622; alternatively, the switching body connecting portion 621 is connected to the electric driver 623. The upper end of the back washing switching knob 622 is provided with a pressure gauge for detecting the air pressure in the back washing chamber.
Visibly, the water flow direction switching structure 63 includes a water inlet portion 631 and a water outlet portion 632 disposed on the water flow switching body 61 and respectively communicated with the back washing cavity 23, and the water inlet portion 631 and the water outlet portion 632 are disposed in an L-shaped staggered manner and are communicated with each other to form the back washing cavity 23, the water inlet portion 631 corresponds to the first water blocking portion 633, the water outlet portion 632 corresponds to the second water blocking portion 634, and when the water inlet portion 631 is communicated with the water inlet 21, the first water blocking portion 633 is blocked at an end of the water outlet 22, or when the water outlet portion 632 is communicated with the water outlet 22, the second water blocking portion 634 is blocked at an end of the water inlet 21.
Obviously, the lower end of the water flow switching body 61 is provided with a recoil gear member 8 located at the circumferential outer side of the upper end of the filter element assembly 4, the upper end of the recoil gear member 8 is provided with a plurality of filtering diversion holes 81 which can communicate the water inlet 21 with the raw water chamber 11 when the water outlet portion 632 is communicated with the water outlet 22 and the second water retaining portion 634 is blocked at the end of the water inlet 21, and the circumferential inner side of the lower end of the recoil gear member 8 is provided with a backwash diversion hole 82 which can communicate the backwash chamber 23 with the raw water chamber 11 when the water inlet portion 631 is communicated with the water inlet 21 and the first water retaining portion 633 is blocked at the end of the water outlet 22. The filter guiding holes 81 facilitate the water flow entering the raw water chamber 11 from the water inlet 21, and the backwash guiding holes 82 enable the water flow to impact the backwash chamber 23 toward the backwash gear member 8 to rotate the scraper frame 41.
Specifically, the scraping and washing driving mechanism 7 includes a back-flushing gear tooth portion 71 formed at the outer circumferential side of the lower end of the back-flushing gear 8, a water conservancy rotating member 72 corresponding to the back-flushing diversion hole 82 is rotatably provided between the back-flushing gear tooth portion 71 and the back-flushing diversion hole 82, and the water conservancy rotating member 72 is connected to the scraping and washing frame body 41. When water flow impacts the tooth opening part 71 of the recoil gear part, the water conservancy rotating part 72 can generate reverse thrust so as to drive the scraping and washing frame body 41 to rotate to scrape and wash the filter element cylinder body 43 and the filter screen 44.
Further, the hydraulic rotating member 72 is impeller-shaped, and the lower end of the tooth portion of the recoil gear is open and faces the raw water chamber 11.
Preferably, the filter element assembly 4 comprises a filter element cylinder 43 which is cylindrical and has a plurality of through holes in the circumferential direction, the upper end and the lower end of the filter element cylinder 43 are respectively sealed, a filter screen 44 is sleeved on the outer circumferential side of the filter element cylinder 43, and the scraping and washing frame body 41 is respectively contacted with the inner circumferential wall of the filtering cup body 1 and/or the outer circumferential wall of the filter screen 44.
In detail, the one-way water conservancy diversion structure 5 is including setting up the mounting hole 51 in the upper end of filter core barrel 43, one-way rivers separation 52 is worn to be equipped with by the activity in mounting hole 51, and one-way rivers separation 52 one end extends to the filter core barrel 43 outside, the other end is located the filter core barrel 43 inboard, one end that one-way rivers separation 52 is located the filter core barrel 43 outside is equipped with the water-retaining part 53 that leans on the mounting hole 51 circumference outside, and have on the one-way rivers separation 52 and enable water-retaining part 53 and keep leaning on the elastic support structure 54 that leans on the trend of the mounting hole 51 circumference outside. The one-way water flow blocking piece 52 is provided with a plurality of one-way water flow blocking silica gel pieces at the circumferential outer side of the part of the inner side of the filter element cylinder 43.
More specifically, the elastic supporting structure 54 includes an elastic member 541 sleeved on the one-way water flow blocking member 52 and located at one end of the inner side of the filter element cylinder 43, and one end of the elastic member 541 acts on the inner side of the filter element cylinder 43, and the other end of the elastic member 541 acts on a limiting portion 542 located at one end of the one-way water flow blocking member 52 far away from the water blocking portion 53.
The principle of the embodiment is as follows: when backwashing is carried out, the backwashing switch knob 622 is rotated or the electric driver 623 is utilized to enable the switch body connecting part 621 to drive the water flow direction switch structure 63 to rotate, so that the water inlet part 631 is communicated with the water inlet 21 and the first water retaining part 633 is blocked at the end part of the water outlet 22, at the moment, water flows into the backwashing cavity 23 from the water inlet part 631, and due to the arrangement of the one-way flow guide structure 5, the water flows out of the backwashing flow guide hole 82 and impacts the tooth opening part 71 of the backwashing gear piece, so that the water conservancy rotating piece 72 forms reverse thrust and drives the scraping and washing frame body 41 to rotate to scrape and wash the filter element cylinder body 43 and the filter screen 44, and sewage after scraping flows out through the; when normal filtration is performed, the water outlet portion 632 is communicated with the water outlet 22 through the backwashing water flow switching assembly 6, and the second water retaining portion 634 is blocked at the end of the water inlet 21, at this time, water flows into the raw water cavity 11 from the filtration diversion holes 81 and is filtered by the filter core assembly 4, and then flows into the backwashing cavity 23 from the purified water cavity 42 through the one-way diversion structure 5, and because the water outlet portion 632 is communicated with the water outlet 22, the water flows into the water outlet 22 from the backwashing cavity 23, and filtration is completed.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms of the filter cup body 1, the raw water chamber 11, the end cap 2, the water inlet 21, the water outlet 22, the backwashing chamber 23, the sewage discharging assembly 3, the sewage discharging opening 31, the filter core assembly 4, the washing frame body 41, the water purifying chamber 42, the filter core cylinder 43, the filter screen 44, the one-way flow guide structure 5, the mounting hole 51, the one-way water flow blocking member 52, the water retaining portion 53, the elastic support structure 54, the elastic member 541, the limiting portion 542, the backwashing water flow switching assembly 6, the water flow switching body 61, the water flow direction switching drive assembly 62, the switching body connecting portion 621, the backwashing switching knob 622, the electric driver 623, the water flow direction switching structure 63, the water inlet portion 631, the water outlet portion 632, the first water retaining portion 633, the second water retaining portion 634, the washing drive mechanism 7, the backwashing gear piece tooth opening portion 71, the water conservancy rotating member 72, the backwashing gear piece 8, the filter flow guide hole 81, the backwashing flow, but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A backwashing filter comprises a filtering cup body (1), wherein an end cover (2) with a water inlet (21) and a water outlet (22) is arranged at the upper end of the filtering cup body (1), a sewage discharge assembly (3) with a sewage discharge outlet (31) is arranged at the lower end of the filtering cup body (1), a cylindrical filter element assembly (4) is movably arranged at the circumferential inner side of the filtering cup body (1), a scraping and washing frame body (41) is sleeved at the circumferential outer side of the filter element assembly (4), an annular raw water cavity (11) is arranged between the circumferential outer side of the filter element assembly (4) and the circumferential inner side of the filtering cup body (1), a water purification cavity (42) is arranged at the circumferential inner side of the filter element assembly (4), and the backwashing filter is characterized in that a backwashing cavity (23) is arranged in the end cover (2), the water purification cavity (42) is communicated with the backwashing cavity (23) through a one-way flow guide structure (5, and the end cover (2) is provided with a backwashing water flow switching component (6) used for communicating the backwashing cavity (23) with the water inlet (21) or the water outlet (22), and a scraping and washing driving mechanism (7) which can drive the scraping and washing frame body (41) to rotate circumferentially when the water inlet (21) is communicated with the backwashing cavity (23) is arranged between the backwashing water flow switching component (6) and the filter core component (4).
2. The backwashing filter of claim 1, wherein the backwashing water flow switching assembly (6) comprises a water flow switching body (61) rotatably disposed on the circumferential inner side of the end cover (2), the water flow switching body (61) is connected with a water flow direction switching driving assembly (62) capable of driving the water flow switching body (61) to rotate circumferentially in the end cover (2), the backwashing chamber (23) is formed in the water flow switching body (61), and a water flow direction switching structure (63) capable of communicating the backwashing chamber (23) with the water inlet (21) or the water outlet (22) when the water flow switching body (61) rotates is disposed in the water flow switching body (61).
3. The backwashing filter of claim 2, wherein the water flow direction switching drive assembly (62) includes a switching body connecting portion (621) connected to an upper end of the water flow switching body (61) and extending to a circumferential outer side of the end cover (2), and the switching body connecting portion (621) is connected to the backwashing switching knob (622); alternatively, the switching body connecting part (621) is connected with an electric driver (623).
4. The backflushing filter according to claim 2 or 3, characterized in that the water flow direction switching structure (63) comprises a water inlet portion (631) and a water outlet portion (632) which are arranged on the water flow switching body (61) and are respectively communicated with the backflushing chamber (23), the water inlet part (631) and the water outlet part (632) are arranged in an L-shaped staggered manner and are communicated with each other to form the back washing cavity (23), the water inlet part (631) corresponds to the first water retaining part (633), the water outlet part (632) corresponds to the second water retaining part (634), when the water inlet part (631) is communicated with the water inlet (21), the first water retaining part (633) is blocked at the end part of the water outlet (22), or when the water outlet part (632) is communicated with the water outlet (22), the second water retaining part (634) is blocked at the end part of the water inlet (21).
5. The backwash filter as claimed in claim 4, wherein the lower end of the water flow switching member (61) is provided with a backwash force gear member (8) located at the outer circumferential side of the upper end of the filter element assembly (4), the upper end of the backwash force gear member (8) is provided with a plurality of filtering guide holes (81) capable of communicating the water inlet (21) and the raw water chamber (11) when the water outlet (632) is communicated with the water outlet (22) and the second water blocking portion (634) is blocked at the end of the water inlet (21), and the inner circumferential side of the lower end of the backwash force gear member (8) is provided with a backwash guide hole (82) capable of communicating the backwash chamber (23) and the raw water chamber (11) when the water inlet (631) is communicated with the water inlet (21) and the first water blocking portion (633) is blocked at the end of the water outlet (22).
6. The backwashing filter of claim 5, wherein the scraping drive mechanism (7) includes a back-flushing gear tooth portion (71) formed at a circumferential outer side of a lower end of the back-flushing gear (8), and a water conservancy rotating member (72) corresponding to the back-flushing guide hole (82) is rotatably provided between the back-flushing gear tooth portion (71) and the back-flushing guide hole (82), and the water conservancy rotating member (72) is connected to the scraping frame body (41).
7. The backflushing filter according to claim 6 wherein said hydraulic rotary member (72) is in the form of an impeller and said backflushing gear has a lower end opening towards the raw water chamber (11).
8. The backwashing filter of claim 1, wherein the filter element assembly (4) comprises a cylindrical filter element cylinder (43) with a plurality of through holes in the circumferential direction, the upper end and the lower end of the filter element cylinder (43) are respectively closed, a filter screen (44) is sleeved on the circumferential outer side of the filter element cylinder (43), and the scraping and washing frame body (41) is respectively contacted with the circumferential inner wall of the filter cup body (1) and/or the circumferential outer wall of the filter screen (44).
9. The backwashing filter of claim 8, wherein the one-way flow guide structure (5) comprises a mounting hole (51) formed in the upper end of the filter element cylinder (43), a one-way water flow blocking member (52) is movably arranged in the mounting hole (51) in a penetrating manner, one end of the one-way water flow blocking member (52) extends to the outer side of the filter element cylinder (43), the other end of the one-way water flow blocking member is arranged on the inner side of the filter element cylinder (43), a water blocking portion (53) abutting against the circumferential outer side of the mounting hole (51) is arranged at one end of the one-way water flow blocking member (52) on the outer side of the filter element cylinder (43), and an elastic support structure (54) capable of enabling the water blocking portion (53) to be kept abutting against the circumferential outer side of the mounting hole (51) is arranged.
10. The backwashing filter of claim 9, wherein the elastic support structure (54) comprises an elastic member (541) sleeved on the one-way water flow blocking member (52) at one end of the inner side of the filter element cylinder (43), and one end of the elastic member (541) acts on the inner side of the filter element cylinder (43) and the other end acts on a limiting portion (542) arranged at one end of the one-way water flow blocking member (52) far away from the water blocking portion (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010115760.2A CN111151053A (en) | 2020-02-25 | 2020-02-25 | Back flush filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010115760.2A CN111151053A (en) | 2020-02-25 | 2020-02-25 | Back flush filter |
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| Publication Number | Publication Date |
|---|---|
| CN111151053A true CN111151053A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010115760.2A Pending CN111151053A (en) | 2020-02-25 | 2020-02-25 | Back flush filter |
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| Country | Link |
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| CN (1) | CN111151053A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915677A (en) * | 2021-02-26 | 2021-06-08 | 吴跃军 | Dust recovery device based on corn starch workshop |
| CN113289406A (en) * | 2021-05-21 | 2021-08-24 | 七道水(厦门)健康科技有限公司 | Water filtering structure |
| CN114028854A (en) * | 2021-12-11 | 2022-02-11 | 郯城泽华基础工程有限公司 | Seawater desalination treatment facility convenient to clearance sweeps |
-
2020
- 2020-02-25 CN CN202010115760.2A patent/CN111151053A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915677A (en) * | 2021-02-26 | 2021-06-08 | 吴跃军 | Dust recovery device based on corn starch workshop |
| CN112915677B (en) * | 2021-02-26 | 2022-07-05 | 日照金丰达淀粉制品有限公司 | Dust recovery device based on corn starch workshop |
| CN113289406A (en) * | 2021-05-21 | 2021-08-24 | 七道水(厦门)健康科技有限公司 | Water filtering structure |
| CN114028854A (en) * | 2021-12-11 | 2022-02-11 | 郯城泽华基础工程有限公司 | Seawater desalination treatment facility convenient to clearance sweeps |
| CN114028854B (en) * | 2021-12-11 | 2022-11-15 | 郯城泽华基础工程有限公司 | Seawater desalination treatment facility convenient to clearance sweeps |
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