CN216320329U - Filter and rotary scraping driving mechanism - Google Patents

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a filter and a rotary scraping driving mechanism, which comprises a fixed seat, a rotary scraping driving mechanism and a rotary scraping driving mechanism, wherein the fixed seat is arranged in the filter; the rotating bracket is rotatably arranged in the fixed seat; a water inlet is formed in the upper part of the rotating bracket; the lower part of the rotating bracket is fixed with an impeller, and the periphery of the impeller is provided with a water outlet; 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. 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.

Description

Filter and rotary scraping driving mechanism

Technical Field

The utility model belongs to the technical field of filters, and particularly relates to a filter and a rotary scraping driving mechanism.

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 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 utility model aims to provide a rotary scraping driving mechanism and a filter, which have better power and are easier to start.

The purpose of the utility model is realized as follows:

a rotary scraping driving mechanism of a filter comprises,

a fixing seat arranged inside the filter;

the rotating bracket is rotatably arranged in the fixed seat;

a water inlet is formed in the upper part of the rotating bracket; the lower part of the rotating bracket is fixed with an impeller, and the periphery of the impeller is provided with a water outlet;

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, the rotating bracket comprises a base, the middle part of the base extends downwards to form a screw connection column, and a through hole is formed in the base on the periphery of the screw connection column;

the impeller comprises a cover plate and a plurality of blades, the blades are formed on the cover plate, and the water outlet is formed between every two adjacent blades;

the cover plate is installed on the screw connection column and matched with the base to form an impeller cavity, and water flow on the upper portion of the rotating support passes through the through hole and then passes through the impeller.

Preferably, the lower part of the rotating bracket is sleeved with a bearing, and the bearing is arranged in the fixed seat;

and a gasket is arranged between the impeller and the rotating support, and the upper side of the gasket is matched with the base to clamp the inner ring part of the bearing.

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 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.

A rotary scraping driving mechanism of a pre-filter is disclosed.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

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.

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 spin-on outer wall of a screen assembly;

FIG. 9 is a schematic view of a rotation mechanism of the rotating gantry;

FIG. 10 is a schematic view of the base and vial engaged;

FIG. 11 is a schematic view of the screen assembly and wiper blade in cooperation.

Detailed Description

The utility model will now be further described in terms of specific embodiments,

the application is a part of the structure of the pre-filter, only the drive structure of the rotary scraping mechanism is claimed, and the rest part of the structure can adopt the prior art.

In the following, the prefilter developed by the applicant, to which the solution of the present application is applied, is described in detail, with reference to fig. 1 to 11:

a low-load start-up filter includes,

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.

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. 11, the filter screen assembly 20 is fixed, and the inner scraper 33a, the filter screen 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.

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 utility model are covered by the protection scope of the utility model.

Claims (6)

1. A rotary scraping driving mechanism of a filter comprises,

a fixed seat (35) arranged inside the filter;

the rotating bracket (32) is rotatably arranged inside the fixed seat (35);

the device is characterized in that a water inlet is arranged at the upper part of the rotating bracket (32); an impeller (31) is fixed at the lower part of the rotating bracket, and a water outlet (311) is arranged on the peripheral side of the impeller;

the water flow outlet (311) faces to a water flow impact surface (351) on the inner side of the fixed seat, and the water flow impact surface (351) comprises a concave part (352) and a convex part (353) which are arranged at intervals.

2. The rotary scraping driving mechanism of the filter as claimed in claim 1, wherein the rotary bracket (32) comprises a base (322), the middle of the base (322) extends downwards to form a screw column (324), and the base around the screw column (324) is provided with a through hole (323);

the impeller comprises a cover plate (313) and a plurality of blades (312), wherein the blades (312) are formed on the cover plate, and the water outlet (311) is formed between every two adjacent blades (312);

the cover plate (313) is arranged on the screw connection column (324) and is matched with the base to form an impeller cavity, and water flow at the upper part of the rotating support (32) passes through the through hole (323) and then passes through the impeller (31).

3. The rotary scraping driving mechanism of the filter as claimed in claim 1, wherein the lower part of the rotary bracket is sleeved with a bearing (36), the bearing (36) is installed in the fixed seat (35);

a gasket (37) is arranged between the impeller and the rotating support, and the upper side of the gasket (37) is matched with the base to clamp the inner ring part of the bearing.

4. The rotary scraping driving mechanism of a filter according to claim 1, wherein the water flow impact surface (351) is provided with a plurality of vertical ribs, and a groove is formed between two adjacent ribs.

5. The scraping drive of claim 4, wherein the distance between the ribs and the water outlet (311) 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 (311) is 2-5 mm.

6. A filter comprising a rotary scraping drive of a filter according to any of claims 1-5.

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