CN113926233A - Filter started under low load - Google Patents

Filter started under low load Download PDF

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Publication number
CN113926233A
CN113926233A CN202111309600.2A CN202111309600A CN113926233A CN 113926233 A CN113926233 A CN 113926233A CN 202111309600 A CN202111309600 A CN 202111309600A CN 113926233 A CN113926233 A CN 113926233A
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CN
China
Prior art keywords
filter screen
shell
screen assembly
scraping
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111309600.2A
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Chinese (zh)
Inventor
张军建
郟剑宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shianjie Environmental Technology Co ltd
Original Assignee
Zhejiang Shianjie Environmental Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Shianjie Environmental Technology Co ltd filed Critical Zhejiang Shianjie Environmental Technology Co ltd
Priority to CN202111309600.2A priority Critical patent/CN113926233A/en
Publication of CN113926233A publication Critical patent/CN113926233A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D29/74—Regenerating the filter material in the filter by forces created by movement of the filter element involving centrifugal force
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)

Abstract

The invention belongs to the technical field of filters, and particularly relates to a low-load starting filter which comprises a shell, wherein the upper part of the shell is provided with a water inlet and a water outlet, and the lower part of the shell is provided with a sewage draining outlet; the filter screen assembly is cylindrical and is arranged in the middle of the shell; the rotary scraping mechanism is rotatably arranged in the shell and is used for scraping sundries on the surface of the filter screen assembly; the valve is used for closing or opening the sewage draining outlet; when the valve is opened, water flows through an impeller of the rotary scraping mechanism and pushes the rotary scraping mechanism; the rotary scraping mechanism comprises a rotary support, a plurality of mounting grooves are formed in the rotary support, and scraping blades are placed in the mounting grooves; when the rotary support rotates, centrifugal force directly or indirectly acts on the scraping sheet, so that the scraping sheet is attached to the surface of the filter screen assembly. Under the condition of reaching a certain rotating speed, the scraper extrudes the filter screen assembly under the action of centrifugal force to scrape impurities, so that the cleaning effect is good, and the cleaning device is particularly suitable for occasions with lower water pressure.

Description

Filter started under low load
Technical Field
The invention belongs to the technical field of filters, and particularly relates to a low-load starting filter.
Background
CN201620143903.X discloses a leading filter of impeller drive blowdown formula, rivers get into the filter screen assembly from the water inlet, carry to the delivery port after filtering again, and the filter screen assembly is held back impurity on the filter screen of filter screen assembly. When sewage needs to be discharged, the valve at the lower part is opened, and water flow pushes the brush through the impeller to wash the filter screen. The technical scheme has the following defects:
1. the brush is tightly attached to the surface of the filter screen, so that the brush has good cleaning capability; however, when the brush is tightly attached, the rotation resistance of the impeller is increased; when the water pressure is insufficient, the impeller may not be started;
2. after long-time use, the brush is deformed or abraded, the initial attaching effect cannot be kept, the cleaning capability of the filter screen is gradually reduced, and only maintenance can be carried out by replacing accessories;
3. the brush can only clean one surface of the filter screen assembly, and the cleaning effect is limited.
4. The filter screen is supported by the framework, so that the effective filtering area is insufficient, and the filtering effect is limited; after long-time use, the filter screen near the framework can be deformed under the influence of water pressure and cannot be attached to the brush, so that the cleaning capability is reduced;
5. the filter screen assembly is fixedly installed, and the rotating bracket can be cleaned only by rotating; therefore, each cleaning can cause abrasion of the filter screen assembly, after a long time, a gap can be generated between the filter screen assembly and the rotating bracket, and water flow does not pass through the filter screen but directly passes through the gap;
6. the brush is driven by the rotating bracket, and the rotating bracket is driven by the impeller; the impeller needs to overcome the resistance between the brush and the filter screen assembly, the resistance between the rotary bracket and the filter screen assembly and the like, and the rotation of the impeller is difficult even under the condition of standard water pressure; in order to achieve the effect of high-speed rotation, part of manufacturers deliberately reduce the fitting degree of the brush and the filter screen assembly, and the cleaning effect is weak.
Disclosure of Invention
The invention aims to provide a filter which can be started at low load by using centrifugal force and can clean a filter screen assembly when the corresponding rotating speed is reached.
The purpose of the invention is realized as follows:
a low-load start-up filter includes,
a shell, wherein the upper part of the shell is provided with a water inlet and a water outlet, and the lower part of the shell is provided with a sewage draining outlet;
the filter screen assembly is cylindrical and is arranged in the middle of the shell;
the rotary scraping mechanism is rotatably arranged in the shell and is used for scraping sundries on the surface of the filter screen assembly;
the valve is used for closing or opening the sewage draining outlet; when the valve is opened, water flows through an impeller of the rotary scraping mechanism and pushes the rotary scraping mechanism;
the rotary scraping mechanism comprises a rotary support, a plurality of mounting grooves are formed in the rotary support, and scraping blades are placed in the mounting grooves; when the rotary support rotates, centrifugal force directly or indirectly acts on the scraping sheet, so that the scraping sheet is attached to the surface of the filter screen assembly.
Preferably, the upper end inside the filter screen assembly is communicated with the water inlet; the lower end in the filter screen assembly is communicated with the sewage draining outlet; the chamber outside the filter screen assembly is communicated with the water outlet.
Preferably, it scrapes the mechanism including the filter screen inner wall soon: a first upright post is arranged in the middle of the rotary support, a first mounting groove is formed in the side part of the first upright post, and an inner scraping blade is arranged in the first mounting groove; the first upright post extends into the filter screen assembly;
when the rotary support rotates under the action of external force, the first upright post rotates and throws the inner scraping blade out to be tightly attached to the inner wall of the filter screen assembly.
Preferably, it scrapes the mechanism including the filter screen outer wall soon: a plurality of second upright columns are arranged on the periphery of the rotating support, second mounting grooves are formed in the second upright columns, and filter screen outer scraping sheets are placed in the second mounting grooves; a swing rod is hinged on the second upright post at the outer side of the filter screen outer scraper;
when the rotary support rotates, one end of the swing rod is thrown outwards by centrifugal force to form a centrifugal end, the other end of the swing rod moves inwards to form a working end, and the working end supports the outer scraper of the filter screen against the filter screen assembly.
Preferably, the outer scraping blade of the filter screen is a flexible sheet, an auxiliary strip is embedded in the outer scraping blade of the filter screen, and the auxiliary strip has certain hardness.
Preferably, the scraping mechanism comprises a scraping mechanism for the inner wall of the shell: a third upright column is arranged on the peripheral side of the rotating support, a third mounting groove is formed in the outer side part of the third upright column, and a bottle body scraping blade is arranged in the third mounting groove; when the rotating support rotates, the third upright post throws the bottle body scraping blade out to be tightly attached to the inner wall of the shell.
Preferably, the rotary scraping mechanism comprises a driving mechanism: a fixed seat is arranged on the inner side of the lower part of the shell, and the rotating bracket is rotatably arranged in the fixed seat; the impeller is fixed at the lower part of the rotating bracket, and a water outlet is arranged on the peripheral side of the impeller; the water flow outlet faces to a water flow impact surface on the inner side of the fixing seat, and the water flow impact surface comprises concave parts and convex parts which are arranged at intervals.
Preferably, be provided with the vertical sand grip of a plurality of on the water impact surface, form the recess between two adjacent sand grips.
Preferably, the housing comprises a bottle and a base;
a sleeve is formed downwards in the middle of the inner side of the base and communicated with the water inlet or the water outlet;
the upper end of the filter screen assembly extends into the sleeve and is attached and sealed with the wall surface of the sleeve;
the sleeve pipe is internally provided with a spring, the lower end of the spring is propped against the upper end of the filter screen assembly, so that the filter screen assembly keeps the trend of moving downwards, and the lower end of the filter screen assembly is attached to the middle part of the rotary support.
Preferably, the base comprises a metal outer shell and a plastic inner shell;
the metal shell is in a cylindrical shape with a closed top end, a water inlet pipeline is arranged on one side of the metal shell, and a water outlet pipeline is arranged on the other side of the metal shell;
the plastic inner shell is attached to the inner wall surface of the metal outer shell, a sleeve is formed downwards on the top of the plastic inner shell, the sleeve and the plastic inner shell are concentrically arranged, and a cavity of the plastic inner shell is divided into a water inlet cavity and a water outlet cavity;
the inner wall of the water inlet pipeline is provided with a plastic water inlet inner pipe, and the inner end of the water inlet inner pipe extends to the sleeve and is communicated with the water inlet cavity;
the inner wall of the water outlet pipeline is provided with a plastic water outlet inner pipe, and the inner end of the water outlet inner pipe extends to the water outlet cavity.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that:
when the scraper is in an initial state, the filter screen assembly and the inner wall of the bottle body are not tightly pressed, and no load exists at the positions; the rotary scraping mechanism is started under the condition of lower load, and the scraping blade is extruded on the filter screen assembly under the action of centrifugal force under the condition of reaching a certain rotating speed, so that sundries are scraped, the cleaning effect is good, and the rotary scraping mechanism is particularly suitable for occasions with lower water pressure.
The scraping blade is directly or indirectly driven by the centrifugal force, when the scraping blade is abraded, the centrifugal force enables the rest scraping blade to be automatically compensated and attached, a good scraping effect can still be kept, performance cannot be reduced, and the service life is long.
The inner side wall and the outer side wall of the filter screen assembly can be cleaned, the inner wall of the bottle body can be cleaned, and the cleaning effect is effectively improved.
The filter screen is a complete cylinder, and a framework is not required for supporting; every scraping is performed on the inner wall and the outer wall of the filter screen at the same time, the scraping process is also a process for repairing the shape of the filter screen, and the deformation of the filter screen caused by water pressure is not needed to be worried about.
The spring is arranged at the upper end of the filter screen assembly, so that the filter screen assembly has a downward movement trend, and when the lower end of the filter screen assembly is worn, the spring enables the filter screen assembly to automatically move downward, the joint between the filter screen assembly and the rotary support is still kept, and water flow is ensured to pass through the filter screen.
The water flow outlet of the impeller faces to the water flow impact surface on the inner side of the fixed seat, and the water flow impact surface comprises concave parts and convex parts which are arranged at intervals; when the impeller rotates, water flow ejected from the water flow outlet sequentially passes through the concave part and the convex part, the smoothness of water flow discharge can be changed, the stress of the impeller is in a changed state, the impeller can be smoothly started through the design, and the normal operation of the rotary scraping mechanism is ensured.
The base comprises the metal outer shell and the plastic inner shell, so that the metal part is hardly contacted with water flow, the water flow is not polluted by heavy metal, and the base is not easy to rust; in addition, in a cold region, the metal outer shell has a frost crack phenomenon, but the plastic inner shell basically cannot be frozen, so that the water flow can be further conveyed, and the water flow conveying device is safe and reliable.
Drawings
FIG. 1 is a perspective view of a filter;
FIG. 2 is a cross-sectional view of the filter;
FIG. 3 is a cross-sectional view in another direction of the filter;
FIG. 4 is a schematic view of a spin-on mechanism of the filter;
FIG. 5 is an exploded view of the spin-on mechanism of the filter;
FIG. 6 is a schematic view of a rotating gantry;
FIG. 7 is a schematic view of a screen assembly in partial cross-section;
FIG. 8 is a schematic view of a wear ring and blade portion of a lower portion of a screen assembly;
FIG. 9 is a schematic view of a spin-on screen assembly outer wall;
FIG. 10 is a schematic view of a rotation mechanism of the rotating gantry;
FIG. 11 is a schematic view of the base and vial engaged;
FIG. 12 is a schematic view of the screen assembly and wiper blade in cooperation;
FIG. 13 is a schematic view of the screen assembly and cutter configuration of example 2;
FIG. 14 is a schematic view of the screen assembly and cutter configuration of example 3;
fig. 15 is a schematic view of a driving structure of the rotating bracket of embodiment 3.
Detailed Description
The invention will now be further described in terms of specific embodiments,
example 1, referring to fig. 1-10, a low load start-up filter, comprising,
a shell 10, the upper part of which is provided with a water inlet 11 and a water outlet 12, and the lower part of which is provided with a sewage outlet 13;
a filter screen assembly 20, which is cylindrical and is installed in the middle of the housing 10;
the rotary scraping mechanism 30 is rotatably arranged in the shell 10 and is used for scraping impurities on the surface of the filter screen assembly 20;
a valve 14 for closing or opening the drain outlet 13; when the valve 14 is opened, the water flows through the impeller 31 of the scraping mechanism 30 and pushes the scraping mechanism 30; the valve adopts the ball valve usually, can design for manual opening, also can design for electronic opening, and this embodiment is electronic regularly opening, full self-cleaning.
The rotary scraping mechanism 30 comprises a rotary bracket 32, wherein a plurality of mounting grooves 321 are formed in the rotary bracket 32, and scraping blades 33 are placed in the mounting grooves; when the rotating bracket 32 rotates, the rotating bracket rotates around the screen assembly, and centrifugal force acts directly or indirectly on the scraper 33, so that the scraper 33 abuts against the surface of the screen assembly 20. The wiper blade 33 includes an inner wiper blade 33a and a screen outer wiper blade 33 b. The mounting groove 321 defines the protruding direction of the blade 33, ensuring a cleaning effect. The mounting slots 321 are radially disposed around the screen assembly 20.
Preferably, the upper end inside the filter screen assembly 20 is communicated with the water inlet 11; the lower end inside the filter screen assembly 20 is communicated with the sewage outlet 13; the chamber outside the filter assembly 20 is in communication with the outlet 12.
Preferably, the scraping mechanism 30 comprises a screen inner wall scraping mechanism: a first pillar 325 is provided at the middle of the rotating bracket 32, a first mounting groove 321a is provided at the side of the first pillar, and an inner blade 33a is disposed in the first mounting groove 321 a; the first upright 325 extends into the interior of the screen assembly 20;
when the rotary bracket 32 is rotated by an external force, the first pillar 325 rotates and throws the inner blade 33a against the inner wall of the screen assembly 20.
The first mounting groove 321a is a through groove penetrating through both sides of the pillar; two pieces of the inner blade 33a are disposed in the first mounting groove 321a and respectively extend out from openings at both sides of the first mounting groove 321 a.
Preferably, the rotary scraping mechanism 30 comprises a filter screen outer wall rotary scraping mechanism: a plurality of second upright posts 327 are arranged on the peripheral side of the rotating bracket 32, a second installation groove 321b is arranged on each second upright post 327, and a filter screen outer scraping blade 33b is arranged in each second installation groove; a swing rod 34 is hinged on the second upright 327 at the outer side of the filter screen outer scraping blade 33 b;
when the rotating bracket 32 rotates, one end of the swing link 34 is thrown outward by centrifugal force and forms a centrifugal end 341, and the other end of the swing link 34 moves inward and forms a working end 342, and the working end 342 abuts the filter screen outer blade 33b against the filter screen assembly 20. As shown in fig. 9, the ratio of the weight of the working end 342 to the weight of the centrifugal end 341 can be designed to be 1:4, and a good tightening effect can be achieved only by slight swinging.
Preferably, the filter screen outer scraping blade 33b is a flexible sheet, and the filter screen outer scraping blade 33b can be made of a silica gel material and is provided with a certain thickness; an auxiliary strip 331 is fitted into the screen outer blade 33b, the auxiliary strip 331 is arranged along the longitudinal direction of the screen outer blade 33b, and the auxiliary strip 331 has a certain hardness. The auxiliary strip 331 may be made of a lightweight metal material, such as stainless steel; if the auxiliary strip is not provided, when the working end 342 is pressed against the outer filter screen scraping blade 33b inwards, the stress points are only two points, and the outer filter screen scraping blade 33b can deform, so that the cleaning effect is weakened;
each outer filter screen scraping blade 33b is provided with two swing rods 34, the two swing rods are arranged in the second mounting groove one above the other, the working ends of the two swing rods are respectively positioned at the upper side and the lower side of the outer filter screen scraping blade 33b, and the centrifugal ends of the two swing rods are both positioned in the middle of the outer filter screen scraping blade 33b, so that the pressing effect is ensured, and the cleaning capability is improved.
In this embodiment, there are two second pillars 327, which are respectively located on two opposite side surfaces; and corresponding filter screen outer wall rotary scraping mechanisms are configured on the two second stand columns.
Preferably, the scraping mechanism 30 includes a housing inner wall scraping mechanism: a third column 326 is provided on the peripheral side of the rotary holder 32, a third mounting groove 321c is provided on the outer side of the third column 326, and a body wiper 33c is provided in the third mounting groove 321 c; when the rotating bracket 32 rotates, the third column throws the body scraping blade 33c out to be close to the inner wall of the housing 10.
Preferably, the rotary scraping mechanism comprises a driving mechanism: a fixed seat 35 is arranged at the inner side of the lower part of the shell 10, and the rotating bracket 32 is rotatably arranged in the fixed seat 35; the impeller 31 is fixed at the lower part of the rotating bracket 32, and a water outlet 311 is arranged at the peripheral side of the impeller; the water outlet 311 faces a water flow impact surface 351 on the inner side of the fixed base 35, and the water flow impact surface 351 includes a concave portion 352 and a convex portion 353 which are arranged at intervals. The lower part of the fixed seat 35 is directly communicated with the sewage draining exit, and only the sewage draining exit needs to be opened, so that the water flow is unblocked from top to bottom, and the water flow is sprayed to the water flow impact surface 351 through the impeller. When the impeller rotated, the rivers that the rivers export jetted out were the order through concave part and convex part, can change rivers exhaust smooth and easy degree for the atress of impeller is a state of change, makes runing rest's rotation more have explosive force, and it is better to strike off the effect.
Preferably, a plurality of vertical protruding strips are arranged on the water flow impact surface 351, and a groove is formed between every two adjacent protruding strips.
The rotary support comprises a base 322, the middle part of the base 322 extends downwards to form a screw column 324, and a through hole 323 is arranged on the base on the peripheral side of the screw column 324;
the impeller 31 comprises a cover plate 313 and a plurality of blades 312, the blades 312 are formed on the cover plate 313, and the water outlet 311 is formed between two adjacent blades 312;
the cover plate 313 is mounted on the screw post 324 and cooperates with the base 322 to form an impeller cavity, and water flow at the upper part of the rotating bracket 32 passes through the through hole 323 and then passes through the impeller 31.
The lower part of the rotating bracket 32 is sleeved with a bearing 36, and the bearing 36 is arranged in a bearing mounting position 355 of the fixed seat 35;
a gasket 37 is arranged between the impeller 31 and the rotating bracket 32, and the upper side of the gasket 37 is matched with the base 322 to clamp the inner ring part of the bearing 36. The design makes the mounting mode of the rotating bracket 32 simpler and the sealing is reliable.
Be provided with the vertical sand grip of a plurality of on the water impact face 351, form the recess between two adjacent sand grips. The convex strips are the convex parts, and the concave grooves are the concave parts.
The distance between the convex strip and the water flow outlet is 1-5 mm; the width of the groove is 2-5 mm; the width of the convex strip is 1-3 mm; the width of the water outlet is 2-5 mm. When the width of rivers export is greater than the width of sand grip, rivers exhaust smooth and easy degree change can be more obvious, and the atress of impeller changes more frequently but the corresponding mild of range also, and the normal operating of scraping the mechanism soon can be more smoothly guaranteed to this design.
Preferably, the housing 10 includes a vial 15 and a base 16;
a sleeve 163 is formed downwards in the middle of the inner side of the base 16, and the sleeve 163 is communicated with the water inlet 11 or the water outlet 12;
the upper end of the filter screen assembly 20 extends into the sleeve 163 and is attached and sealed with the wall surface of the sleeve 163;
a spring 164 is disposed in the sleeve 163, and the lower end of the spring abuts against the upper end of the screen assembly 20, so that the screen assembly 20 keeps a downward movement trend, and the lower end of the screen assembly is attached to the middle of the rotating bracket 32.
The filter screen assembly 20 comprises an upper retainer ring 201, a lower retainer ring 202 and a filter cartridge 203;
the upper fixing ring 201 and the lower fixing ring 202 are respectively installed at the upper and lower ends of the filter cartridge 203. One side of the upper fixing ring 201 is provided with a positioning protrusion 204, and the positioning protrusion 204 is matched with a positioning groove in the sleeve 163 to prevent the deflection of the filter screen assembly.
The upper fixing ring 201 and the lower fixing ring 202 are made of hard wear-resistant plastics, and engineering plastics can be selected. The lower portion of the screen assembly 20 is provided with a wear ring 206, the wear ring 206 contacting a surface of the base 322. The wear-resistant ring 206 is made of hard wear-resistant plastic or ceramic material or stainless steel material, and engineering plastic can be selected. The spring 164 allows the entire screen assembly 20 to move downward, automatically compensating, as the wear ring 206 or lower retaining ring 202 wears.
The filter cartridge 203 is a cylindrical body formed by crimping a rectangular filter sheet in the width direction and bonding both ends thereof without a frame support.
The outer diameters of the upper fixing ring 201 and the lower fixing ring 202 of the filter screen assembly 20 are larger than that of the filter cartridge 203, so that the side of the filter screen assembly forms an inner concave area 205;
the inner end of the screen outer blade 33b extends into the recessed area 205 and prevents the screen assembly 20 from disengaging from the spin stand 32. This design prevents upward movement of screen assembly 20 in the event of a spring failure. The filter cartridge 203 is a very thin layer of metal mesh; in the non-rotating state, the inner wiper 33a and the outer wiper 33b are close to the inner side and the outer side of the filter cylinder 203, but not close to each other. Only needs to rotate slightly, and can be pressed by centrifugal force.
Preferably, the base comprises an outer metal shell 161 and an inner plastic shell 162, so that the metal part is not contacted with the water flow, thereby ensuring that the water flow is not polluted by heavy metal and is not easy to rust;
in the north, the base has a frost crack phenomenon, so that indoor water leakage is caused, and the loss is heavy; this design has realized dual fail-safe, even if metal casing is by the frost crack, the plastics inner shell also can remain intact, ensures the transport of rivers, safe and reliable.
The metal shell 161 is in a cylindrical shape with a closed top end, a water inlet pipeline 165 is arranged on one side of the metal shell 161, and a water outlet pipeline 166 is arranged on the other side of the metal shell;
the plastic inner shell 162 is attached to the inner wall surface of the metal outer shell 161, a sleeve 163 is formed downwards on the top of the plastic inner shell, the sleeve and the plastic inner shell are concentrically arranged, and the cavity of the plastic inner shell is divided into a water inlet cavity 167 and a water outlet cavity 168;
the inner wall of the water inlet pipeline 165 is provided with a plastic water inlet inner pipe 169, and the inner end of the water inlet inner pipe 169 extends to the sleeve 163 and is communicated with the water inlet cavity 167;
the inner wall of the water outlet pipe 166 is provided with a plastic water outlet inner pipe 170, and the inner end of the water outlet inner pipe 170 extends to the water outlet cavity 168.
The lower portion of the metal case 161 is provided with a screw portion 171 into which the filter bottle is screwed.
The threaded portion 171 is exposed from the plastic inner shell 162.
A gasket 172 is arranged at the top end of the threaded part 171, and the inner side of the gasket 172 is attached to the plastic inner shell 162; when the bottle body 15 is screwed into the screw portion 171, the top end of the bottle body 15 abuts against the gasket 172.
In the initial state, the inner scraper 33a, the filter screen outer scraper 33b and the bottle body scraper 33c do not cause resistance to the rotating bracket, so that the rotating bracket can rotate rapidly. Based on centrifugal force, the faster the rotating speed of the rotating bracket is, the better the abutting effect of the inner scraping piece 33a, the filter screen outer scraping piece 33b and the bottle body scraping piece 33c is, the better the scraping effect is, the load of the rotating bracket is gradually increased, and the balance between the rotating speed and the load is achieved.
After the inner scraping piece 33a, the filter screen outer scraping piece 33b and the bottle body scraping piece 33c are worn, automatic compensation is achieved through centrifugal force, the inner scraping piece is more attached, and the scraping effect is better.
In the application, the water flow flows outwards from the inside of the filter screen assembly 20, and impurities in the water flow are intercepted on the inner wall of the filter screen and can be discharged through a sewage discharge port; part of small-particle impurities can pass through the filter screen, and when sewage is discharged, the small-particle impurities can be discharged through the filter screen and the sewage discharge port again, and can also be discharged through the water outlet.
In this embodiment, a cutter structure for cutting up flocculent suspended matter in the water flow is further designed, as shown in fig. 7 and 8, a blade portion 2061 is provided inside the wear-resistant ring 206, the blade portion 2061 may be integrally formed with the wear-resistant ring 206, and the blade portion 2061 extends inward to above the through hole 323 and is attached to the surface of the base 322; when the wear ring 206 and the screen assembly 20 are fixed together, and the blade portion 2061 performs a shearing operation along the surface of the base 322 when the screen assembly 20 and the rotary bracket 32 rotate relatively, the rotating area of the blade portion 2061 may cover the through hole 323, so that the flocculent floating objects caught at the through hole 323 are cut up and discharged. The floe-like floating objects in the water flow are easily caught at the penetration holes 323.
As shown in fig. 12, the strainer assembly 20 is fixed, and the inner scraper 33a, the strainer outer scraper 33b and the bottle body scraper 33c all rotate circumferentially and are subject to centrifugation; the inner blade 33a presses against the inner wall of the screen assembly 20; the outer scraper 33b of the filter screen extrudes the outer wall of the filter screen assembly 20 under the action of the swing rod 34; the body scraping blade 33c presses the inner wall of the bottle body;
more than two groups of inner scraping blades 33a, filter screen outer scraping blades 33b and bottle body scraping blades 33c are arranged;
the working surface of the inner wiper blade 33a is provided with first grooves 331a, and the first grooves 331a between different inner wiper blades 33a are staggered with each other, so that each inner wiper blade 33a is responsible for cleaning the inner wall of the filter screen assembly 20 in different sections; further reducing the resistance given to the rotating bracket by the inner blade 33 a;
the working surface of the outer filter wiper blade 33b is provided with second grooves 331b, and the second grooves 331b between different outer filter wiper blades 33b are staggered with each other, so that each outer filter wiper blade 33b is responsible for cleaning the outer wall of the filter assembly in different sections; further reducing the resistance imparted to the rotating frame by the screen outer blade 33 b;
the working surface of the body scraping blade 33c is provided with a third groove 331c, and the third grooves 331c between different body scraping blades 33c are staggered with each other, so that each body scraping blade 33c is responsible for cleaning the inner wall of the bottle body in different sections; further reducing the resistance imparted to the rotating support by the body scraper 33 c.
Example 2, this example is substantially the same as example 1, except that as shown in fig. 13, when filtering, water enters from outside of the filter screen assembly 20 (correspondingly, the outside of the filter screen assembly 20 is conducted to the water inlet, and the pipe inside the filter screen assembly 20 is conducted to the water outlet), and impurities are blocked outside the filter cartridge 203; the interior of the filter cartridge 203 is supported by a framework 207, the framework 207 is formed by curling a stainless steel plate, and hollow water passing holes are arranged on the surface of the stainless steel plate; the bottom of the filter screen assembly 20 is a closed structure, a water passing gap is formed between the bottom of the filter screen assembly 20 and the base 322, and when a sewage draining outlet at the lower part is opened, water flow directly passes through the bottom of the filter screen assembly and then enters the through hole 323 to be discharged downwards.
The framework 207 can prevent the filter cartridge 203 from sinking inwards; in addition, the middle first pillar 325 and corresponding inner blade 33a structure are eliminated due to the loaded backbone.
The cutter structure of this embodiment is different from that of embodiment 1, and specifically includes: a fixed shaft 90a is further arranged at the bottom of the filter screen assembly 20, and a blade 91a is arranged on the fixed shaft 90 a; the lower end of the fixed shaft 90a abuts on the rotating bracket 32; the filter screen assembly 20 and the blade 91a are relatively fixedly arranged;
when the rotating bracket 32 rotates, the relative blade rotates; the floating floccules may be present in the water flow, and the rotation of the rotating bracket 32 makes the through holes 323 rotate along with the water flow, so that the water flow rotates to drive the floating floccules, and the floating floccules are cut by the blades for discharging.
Embodiment 3, this embodiment is basically the same as embodiment 2, the inside of the strainer assembly 20 is provided with the skeleton 207, the bottom of the strainer assembly 20 is closed, and its difference is as shown in fig. 13 and fig. 14, this embodiment proposes another new cutter structure, the strainer assembly 20 is rotatably installed in the bottle body 15, the bottom of the strainer assembly 20 is fixedly provided with the rotating shaft 90b, the rotating shaft 90b is provided with the blade 91 b; an open through hole 3211 is formed in the middle of the rotating bracket 32, and the lower end of the rotating shaft 90b passes through the open through hole 3211 and is then fixedly connected with the impeller 31; the impeller 31 drives the rotating shaft 90b and then drives the filter screen assembly 20 to rotate at a high speed; the rotary scraping mechanism 30 cleans impurities on the surface of the filter screen assembly 20, and the filter screen assembly 20 rotates at a high speed to further throw away stubborn impurities on the surface; the effect of the blades 91b is to chop up the suspended floe;
the rotating bracket 32 is arranged on the bearing 36, the bottom of the rotating bracket 32 is provided with three planet wheels 80, and the three planet wheels 80 surround the rotating shaft 90b and are meshed with the middle part of the rotating shaft 90 b; the outer side of the planet wheel 80 is sleeved with a gear ring 37; when the rotating shaft 90b rotates, the rotating bracket 32 is also driven to rotate; because there is a difference in the number of teeth between the planetary gear 80 and the rotating shaft 90b, there is also a difference in the rotational speed between the rotating support 32 and the screen assembly 20, and a scraping effect is achieved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. A low-load start-up filter includes,
a shell (10), wherein the upper part of the shell is provided with a water inlet (11) and a water outlet (12), and the lower part of the shell is provided with a sewage draining exit (13);
the filter screen assembly (20) is cylindrical and is arranged in the middle of the shell (10);
the rotary scraping mechanism (30) is rotatably arranged in the shell (10) and is used for scraping sundries on the surface of the filter screen assembly (20);
a valve (14) for closing or opening the waste outlet (13); when the valve (14) is opened, water flows through an impeller (31) of the rotary scraping mechanism (30) and pushes the rotary scraping mechanism (30);
it is characterized in that the preparation method is characterized in that,
the rotary scraping mechanism (30) comprises a rotary support (32), a plurality of mounting grooves (321) are formed in the rotary support (32), and scraping blades (33) are arranged in the mounting grooves; when the rotating bracket (32) rotates, centrifugal force directly or indirectly acts on the scraping blade (33), so that the scraping blade (33) is attached to the surface of the filter screen assembly (20).
2. A low load start filter according to claim 1, wherein the upper end of the inside of said screen assembly (20) is in communication with said water inlet (11); the lower end in the filter screen assembly (20) is communicated with the sewage draining outlet (13); the chamber outside the filter screen assembly (20) is communicated with the water outlet (12).
3. A low load activated filter according to claim 1, wherein the scraping mechanism (30) comprises a sieve inner wall scraping mechanism: a first upright post (325) is arranged in the middle of the rotating bracket (32), a first mounting groove (321a) is arranged on the side of the first upright post, and an inner scraping blade (33a) is arranged in the first mounting groove (321 a); the first upright post (325) extends into the interior of the screen assembly (20);
when the rotating bracket (32) rotates under the action of external force, the first upright post rotates and throws the inner scraping blade (33a) out to be tightly attached to the inner wall of the filter screen assembly (20).
4. A low load activated filter as claimed in claim 1, wherein said spin-on mechanism (30) comprises a screen outer wall spin-on mechanism: a plurality of second upright posts (327) are arranged on the peripheral side of the rotating support (32), second installation grooves (321b) are formed in the second upright posts (327), and filter screen outer scraping blades (33b) are arranged in the second installation grooves; a swing rod (34) is hinged on a second upright post (327) at the outer side of the filter screen outer scraping blade (33 b);
when the rotating bracket (32) rotates, one end of the swing rod (34) is thrown outwards by centrifugal force to form a centrifugal end (341), the other end of the swing rod (34) moves inwards to form a working end (342), and the working end (342) enables the outer scraper (33b) of the filter screen to abut against the filter screen assembly (20).
5. A low load activated filter according to claim 4, characterized in that the screen outer blade (33b) is a flexible sheet material, and the screen outer blade (33b) is embedded with an auxiliary strip (331) inside, the auxiliary strip (331) having a certain hardness.
6. A low load start filter according to claim 1 wherein the scraping means (30) comprises a housing inner wall scraping means: a third upright column (326) is arranged on the peripheral side of the rotating bracket (32), a third mounting groove (321c) is arranged at the outer side part of the third upright column (326), and a bottle body scraping blade (33c) is arranged in the third mounting groove (321 c); when the rotating support (32) rotates, the third upright post throws out the bottle body scraping blade (33c) to be tightly attached to the inner wall of the shell (10).
7. A low load start filter according to claim 1 wherein said scraping means comprises drive means: a fixed seat (35) is arranged on the inner side of the lower part of the shell (10), and the rotating bracket (32) is rotatably arranged in the fixed seat (35); the impeller (31) is fixed at the lower part of the rotating bracket (32), and a water outlet (311) is arranged on the peripheral side of the impeller; the water flow outlet (311) faces a water flow impact surface (351) on the inner side of the fixed seat (35), and the water flow impact surface (351) comprises a concave part (352) and a convex part (353) which are arranged at intervals.
8. A low load activated strainer according to claim 7 wherein said water impact surface (351) is provided with a plurality of vertical ridges, and adjacent ridges form grooves therebetween.
9. A low load start filter according to claim 1 wherein the housing (10) comprises a bottle (15) and an end cap (16);
a sleeve (163) is formed downwards in the middle of the inner side of the end cover (16), and the sleeve (163) is communicated with the water inlet (11) or the water outlet (12);
the upper end of the filter screen assembly (20) extends into the sleeve (163) and is attached and sealed with the wall surface of the sleeve (163);
a spring (164) is arranged in the sleeve (163), the lower end of the spring is abutted against the upper end of the filter screen assembly (20), so that the filter screen assembly (20) keeps the trend of moving downwards, and the lower end of the filter screen assembly is attached to the middle of the rotary support (32).
10. A low load start filter according to claim 9 wherein the end cap comprises an outer metal shell (161) and an inner plastic shell (162);
the metal shell (161) is in a cylindrical shape with a closed top end, a water inlet pipeline (165) is arranged on one side of the metal shell (161), and a water outlet pipeline (166) is arranged on the other side of the metal shell;
the plastic inner shell (162) is attached to the inner wall surface of the metal outer shell (161), a sleeve (163) is formed downwards on the top of the plastic inner shell, the sleeve and the plastic inner shell are concentrically arranged, and the cavity of the plastic inner shell is divided into a water inlet cavity (167) and a water outlet cavity (168);
a plastic water inlet inner pipe (169) is arranged on the inner wall of the water inlet pipeline (165), the inner end of the water inlet inner pipe (169) extends to the sleeve (163) and is communicated with the water inlet cavity (167);
the inner wall of the water outlet pipeline (166) is provided with a plastic water outlet inner pipe (170), and the inner end of the water outlet inner pipe (170) extends to the water outlet cavity (168).
CN202111309600.2A 2021-11-06 2021-11-06 Filter started under low load Pending CN113926233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111309600.2A CN113926233A (en) 2021-11-06 2021-11-06 Filter started under low load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111309600.2A CN113926233A (en) 2021-11-06 2021-11-06 Filter started under low load

Publications (1)

Publication Number Publication Date
CN113926233A true CN113926233A (en) 2022-01-14

Family

ID=79285687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111309600.2A Pending CN113926233A (en) 2021-11-06 2021-11-06 Filter started under low load

Country Status (1)

Country Link
CN (1) CN113926233A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115738444A (en) * 2022-11-18 2023-03-07 王秋晨 Sewage treatment device and treatment process
CN115999228A (en) * 2023-03-27 2023-04-25 山东泉涌环境科技有限公司 Sewage treatment device convenient to clear up mud

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115738444A (en) * 2022-11-18 2023-03-07 王秋晨 Sewage treatment device and treatment process
CN115738444B (en) * 2022-11-18 2023-09-22 山东省城建设计院 Sewage treatment device and treatment process
CN115999228A (en) * 2023-03-27 2023-04-25 山东泉涌环境科技有限公司 Sewage treatment device convenient to clear up mud
CN115999228B (en) * 2023-03-27 2023-06-09 山东泉涌环境科技有限公司 Sewage treatment device convenient to clear up mud

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