CN221732566U - Laminated back flushing prefilter - Google Patents

Abstract

The utility model discloses a laminated back flushing prefilter which comprises a machine head for water inlet and outlet, a filter flask connected with the machine head, a filter assembly arranged in the filter flask and a sewage disposal assembly arranged below the filter assembly, wherein the filter assembly comprises a laminated framework, a laminated sheet arranged outside the laminated framework, an inner framework arranged inside the laminated framework and a laminated pressing piece arranged below the laminated framework, the laminated framework is provided with a first filtering water through hole and a first back flushing water spray hole, the inner framework is provided with a second filtering water through hole and a second back flushing water spray hole, the first back flushing water spray hole is communicated with the second back flushing water spray hole, the laminated pressing piece is connected with the sewage disposal assembly, and the laminated pressing piece rotatably drives the inner framework to move up and down in the sewage disposal assembly so as to communicate or stagger the first filtering water through hole with the second filtering water through hole. The utility model provides a problem that the aperture skeleton texture flow is little in the prior art, the problem that the macroporous skeleton texture washed uncleanly.

Description

Laminated back flushing prefilter

Technical Field

The utility model relates to the field of water purifying equipment, in particular to a laminated back flushing prefilter.

Background

When the existing laminated filter is used for filtering, water flows in from outside to inside, and the laminated filter blocks particulate impurities such as floaters, rust, silt and the like in the water; during back flushing, water flows out from inside to outside, and particles and sundries such as floaters, rust, silt and the like attached to the lamination are flushed.

The existing laminated back flushing prefilter has the following problems:

First, if the laminated pre-filter skeleton is designed to be a small-hole structure, during back flushing, in order to meet the flushing effect, the small-hole size is smaller, so that when in filtering, the flow is smaller, and under the same flow condition, the laminated pre-filter skeleton with small holes needs more laminations, and the size is larger. During back flushing, as unfiltered water directly enters the framework, the water is sprayed outwards, particles and impurities in the water can be blocked in the small holes, so that after the small holes are blocked, flushing is uneven, and the flushing effect is reduced;

Secondly, if the laminated pre-filter framework is designed to be of a macroporous structure, the macropores ensure the flow of the product, but during back flushing, the water passing area of the macropores is larger, water with high pressure cannot be generated, the laminated flushing effect is poor, and the laminated flushing is not clean;

Thirdly, the existing vertical backwash structure needs to use a ball valve and a spring, and because the spring has certain pressure, a pressure difference is needed to open a backwash flow passage during backwash, and when the water pressure is smaller, the backwash flow passage cannot be opened, so that the flushing cannot be realized. If the pressure of the spring is reduced, in the use process, the ball valve is closed after the sewage discharge is finished, and the back flushing flow passage cannot be closed because the skeleton cannot be sprung up due to small spring force, so that the interception rate of the product is reduced.

Disclosure of utility model

The utility model aims to solve the technical problems and provides a laminated back flushing prefilter, which solves the problems of small flow rate of a small-hole framework structure, uncleanness of flushing of a large-hole framework structure and incapability of switching a flow passage due to spring pressure during back flushing and filtering switching in the prior art.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a pre-filter of back flush of lamination formula, including the aircraft nose that is used for advancing water, the filter flask of being connected with the aircraft nose, establish the filter unit in the filter flask, establish the blowdown subassembly in the filter unit below, the filter unit includes the lamination skeleton, establish the lamination in the lamination skeleton outside, establish the inner skeleton in the lamination skeleton inboard, establish the lamination compress tightly the piece in lamination skeleton below, be equipped with first filtration water hole and first back flush water hole on the lamination skeleton, be equipped with second filtration water hole and second back flush water hole on the inner skeleton, first back flush water hole and second back flush water hole intercommunication, the lamination compresses tightly the piece and is connected with the blowdown subassembly, the lamination compresses tightly the piece rotatable drive inner skeleton and reciprocates in the blowdown subassembly and communicates or stagger first filtration water hole and second filtration water hole.

Preferably, the blowdown assembly comprises a blowdown shaft sleeve and a blowdown shaft arranged in the blowdown shaft sleeve, an inclined slide rail is arranged on the blowdown shaft sleeve, lugs are arranged on the outer side of the lamination pressing piece, and the lugs are arranged in the slide rail and move along the slide rail.

Preferably, the filter flask is provided with a drain hole, the drain shaft sleeve comprises an outer drain pipe arranged below the drain hole and a slide rail seat clamped on the drain hole, the slide rail seat is arranged above the outer drain pipe, and the slide rail is arranged on the slide rail seat.

Preferably, the drain shaft comprises an inner drain pipe and a rotating shaft, wherein the inner drain pipe is inserted into the outer drain pipe, a drain hole is arranged between the inner drain pipe and the rotating shaft, and the drain hole can extend out of the outer drain pipe or retract into the outer drain pipe in a vertical moving manner.

Preferably, a rotating shaft sleeve is arranged in the inner framework, the rotating shaft is in threaded connection with the rotating shaft sleeve, and the rotating shaft can be screwed into the rotating shaft sleeve or screwed out of the rotating shaft sleeve.

Preferably, the lamination pressing piece comprises a first pipe body and a second pipe body which are integrally formed, the lug is arranged on the outer side of the first pipe body, a groove is formed between the first pipe body and the second pipe body, the lamination framework is clamped on the groove, and the inner framework is inserted into the second pipe body to be in threaded connection with the second pipe body.

Preferably, the laminated frame comprises a first frame and a frame seat, wherein the first filtering water through hole and the first back flushing water spray hole are formed in the first frame, the frame seat is arranged above the first frame, a step part and a first guide water inlet are formed in the frame seat, and the first guide water inlet is arranged below the step part.

Preferably, the inner framework comprises a second framework and a framework sheet, the second filtering water through holes and the second back flushing water spray holes are formed in the second framework, the second framework is inserted into the first framework, and the framework sheet can move up and down to open or close the first guide water inlet with the step part.

Preferably, a second guide water inlet is arranged above the framework sheet, a machine head pipe is arranged on the machine head, and the second guide water inlet is inserted into the machine head pipe or exposed out of the machine head pipe along with the up-and-down movement of the inner framework.

Preferably, the machine head comprises a water inlet pipe and a water outlet pipe, the water outlet pipe is communicated with the machine head pipe, a pipe wall is arranged between the water inlet pipe and the water outlet pipe.

The application method of the utility model is as follows:

when in a filtering state, the first filtering water through hole is communicated with the second filtering water through hole, the first back flushing water spray hole is communicated with the second back flushing water spray hole, the sewage drain hole is retracted into the outer sewage drain pipe to close the sewage drain assembly, municipal water flows in from the water inlet pipe, at the moment, the framework piece is above the step part, water flows downwards through the gap between the framework piece and the framework seat and flows through the first guiding water inlet and then enters the cavity between the filter flask and the lamination, a gap for intercepting and filtering impurities in water exists between the lamination, and after the water flows into the first filtering water through hole and the second filtering water through hole of the lamination framework through the gap between the lamination, the water flows upwards and flows out through the machine head pipe and the water outlet pipe;

Rotating the blowdown shaft sleeve to switch the laminated back flushing prefilter from a filtering state to a blowdown state, and when rotating the blowdown shaft sleeve, enabling the lugs to move downwards obliquely along the sliding rails to drive the laminated pressing piece to move downwards, so that the laminated is changed from a pressing state to a loosening state; the inner framework is in threaded connection with the lamination pressing piece, when the lamination pressing piece descends, the inner framework descends together, when the lamination pressing piece descends, the second filtering water through holes of the inner framework are staggered with the first filtering water through holes of the lamination framework, the first filtering water through holes of the lamination framework are closed, but the first back flushing water spray holes of the lamination framework are still in an aligned state, and the first back flushing water spray holes of the lamination framework are in an open state; after the inner framework descends, the second guide water inlet of the inner framework moves downwards from the inside of the machine head pipe to be exposed, and the framework piece coincides with the step part to close the first guide water inlet; when the sewage draining shaft sleeve rotates, the sewage draining shaft is driven to rotate together, and the internal threads in the inner framework enable the sewage draining shaft to rise when rotating, so that the sewage draining outlet on the sewage draining shaft is higher than the surface of the rotating shaft sleeve, and the sewage draining outlet is opened, and the sewage draining channel is opened;

when in a sewage draining state, municipal water flows in from the water inlet pipe, enters the inner framework through the second guide water inlet of the inner framework, sprays water outwards from the second backwash water spraying hole and the first backwash water spraying hole, the lamination is in a loose state, the lamination is rotated under the action of high-pressure water, scrubbing is formed between the lamination, meanwhile, the high-pressure water forms rotary water spray, the rotary water spray washes the filter flask, impurities move downwards along with the water flow, and downwards flows out of the filter through the sewage draining hole on the sewage draining shaft to finish sewage draining.

The utility model has the beneficial effects that:

1. The utility model changes the original differential pressure type back flushing structure of the ball valve spring into mechanical switching, thereby ensuring the reliability of the product;

2. During back flushing, water is subjected to coarse filtration through the filter screen, so that guide small holes are not blocked, subsequent unpicking and washing are not needed, the flushing effect is better, and the flushing is cleaner;

drawings

Fig. 1 is a schematic diagram of the structure of the filtering state.

Fig. 2 is a cross-sectional view taken along A-A of fig. 1.

Fig. 3 is a schematic structural view of the sewage discharge state.

Fig. 4 is a cross-sectional view of fig. 3 taken along the direction B-B.

Fig. 5 is a schematic structural view of a laminated armature.

Fig. 6 is a schematic structural view of an inner skeleton.

Fig. 7 is a schematic view of the structure of the inner skeleton from another view.

Fig. 8 is a schematic structural view of the lamination shoe.

Fig. 9 is a schematic view of the sewage disposal assembly in a filtering state.

Fig. 10 is a schematic structural view of the blow-down sleeve.

Fig. 11 is a schematic structural view of the drain shaft.

In the figure: 1. the machine head comprises a machine head body, 11, a water inlet pipe, 12, a water outlet pipe, 13, a machine head pipe, 14, a pipe wall, 2, a filter flask, 21, a sewage drain, 3, a laminated framework, 31, a first framework, 311, a first filtering water through hole, 312, a first back flushing water spray hole, 32, a framework seat, 321, a step part, 322, a first guiding water inlet, 4, a laminated sheet, 5, an inner framework, 51, a second framework, 511, a second filtering water through hole, 512, a second back flushing water spray hole, 52, a rotating shaft sleeve, 53, a framework sheet, 54, a second guiding water inlet, 6, a laminated sheet pressing piece, 61, a first pipe body, 62, a second pipe body, 63, a groove, 64, a lug, 7, a sewage drain shaft sleeve, 71, a slide rail seat, 711, a slide rail, 72, an outer sewage drain pipe, 8, a sewage drain shaft, 81, an inner sewage drain pipe, 82, a rotating shaft, 83 and a sewage drain hole.

Detailed Description

The utility model is further described below with reference to the drawings and embodiments.

As shown in fig. 1-11, the laminated back flush pre-filter of the utility model comprises a machine head 1 for water inlet and outlet, a filter bottle 2 connected with the machine head 1, a filter assembly arranged in the filter bottle 2, and a sewage disposal assembly arranged below the filter assembly, wherein the filter assembly comprises a laminated skeleton 3, a laminated sheet 4 arranged outside the laminated skeleton 3, an inner skeleton 5 arranged inside the laminated skeleton 3, and a laminated pressing piece 6 arranged below the laminated skeleton 3, the laminated skeleton 3 is provided with a first filtering water through hole 311 and a first back flush water spray hole 312, the inner skeleton 5 is provided with a second filtering water through hole 511 and a second back flush water spray hole 512, the first back flush water spray hole 312 is communicated with the second back flush water spray hole 512, the laminated pressing piece 6 is connected with the sewage disposal assembly, and the laminated pressing piece 6 is rotatably driven by the inner skeleton 5 to move up and down in the sewage disposal assembly to communicate or stagger the first filtering water through hole 311 with the second filtering water through hole 511.

The blowdown subassembly includes blowdown axle 8 cover 7, establishes blowdown axle 8 in blowdown axle 8 cover 7, is equipped with inclined slide rail 711 on the blowdown axle 8 cover 7, and lamination compresses tightly 6 outside and is equipped with lug 64, and lug 64 establishes and removes along slide rail 711 in slide rail 711.

The filter flask 2 is provided with a drain outlet 21, the drain shaft 8 sleeve 7 comprises an outer drain pipe 72 arranged below the drain outlet 21 and a slide rail seat 71 clamped on the drain outlet 21, the slide rail seat 71 is arranged above the outer drain pipe 72, and the slide rail 711 is arranged on the slide rail seat 71.

The drain shaft 8 includes an inner drain pipe 81 and a rotation shaft 82, the inner drain pipe 81 is inserted into the outer drain pipe 72, a drain hole 83 is provided between the inner drain pipe 81 and the rotation shaft 82, and the drain hole 83 can extend out of the outer drain pipe 72 or retract into the outer drain pipe 72 while being movable up and down.

The inner frame 5 is provided with a rotating shaft 82 sleeve 52, the rotating shaft 82 is in threaded connection with the rotating shaft 82 sleeve 52, and the rotating shaft 82 can be rotated into the rotating shaft 82 sleeve 52 or rotated out of the rotating shaft 82 sleeve 52.

The lamination pressing piece 6 comprises a first pipe body 61 and a second pipe body 62 which are integrally formed, a lug 64 is arranged on the outer side of the first pipe body 61, a groove 63 is formed between the first pipe body 61 and the second pipe body 62, the lamination framework 3 is clamped on the groove 63, and the inner framework 5 is inserted into the second pipe body 62 to be in threaded connection with the second pipe body 62.

The laminated frame 3 comprises a first frame 31 and a frame seat 32 which are arranged in the groove 63, a first filtering water through hole 311 and a first back flushing water spraying hole 312 are arranged on the first frame 31, the frame seat 32 is arranged above the first frame 31, a step portion 321 and a first guiding water inlet 322 are arranged in the frame seat 32, and the first guiding water inlet 322 is arranged below the step portion 321.

The inner frame 5 includes a second frame 51 and a frame piece 53, a second filtering water passing hole 511 and a second backwashing water spraying hole 512 are provided on the second frame 51, the second frame 51 is inserted into the first frame 31, and the frame piece 53 can move up and down to open or close the first guide water inlet 322 with the stepped portion 321.

A second guide water inlet 54 is arranged above the framework piece 53, the machine head 1 is provided with a machine head pipe 13, and the second guide water inlet 54 is inserted into the machine head pipe 13 or exposed out of the machine head pipe 13 along with the up-and-down movement of the inner framework 5.

The machine head 1 comprises a water inlet pipe 11 and a water outlet pipe 12, the water outlet pipe 12 is communicated with a machine head pipe 13, and a pipe wall 14 is arranged between the water inlet pipe 11 and the water outlet pipe 12.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing the utility model based on the orientation or positional relationship shown in the drawings, and are not to be construed as limiting the utility model, as the indicating device or element must have a particular orientation, be constructed and operated in a particular orientation.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Claims (10)

1. The utility model provides a lamination formula back flush prefilter which characterized in that: including aircraft nose (1) that is used for business turn over water, filter flask (2) be connected with aircraft nose (1), establish filter unit in filter flask (2), establish the blowdown subassembly in filter unit below, filter unit includes lamination skeleton (3), establish lamination (4) in lamination skeleton (3) outside, establish in lamination skeleton (3) inboard inner frame (5), establish lamination compress tightly piece (6) in lamination skeleton (3) below, be equipped with first filtration water hole (311) and first back flush water hole (312) on lamination skeleton (3), be equipped with second filtration water hole (511) and second back flush water hole (512) on inner frame (5), first back flush water hole (312) and second back flush water hole (512) intercommunication, lamination compress tightly piece (6) and blowdown subassembly and be connected, lamination compress tightly piece (6) rotatable drive inner frame (5) in the blowdown subassembly and reciprocate with first filtration water hole (311) and second filtration water hole (511) intercommunication or stagger.

2. The laminated backwash pre-filter according to claim 1 wherein: the blowdown subassembly includes blowdown axle sleeve (7), establishes blowdown axle (8) in blowdown axle sleeve (7), is equipped with slide rail (711) of slope on blowdown axle sleeve (7), and lamination compresses tightly piece (6) outside and is equipped with lug (64), and lug (64) are established in slide rail (711) along slide rail (711) removal.

3. The laminated backwash pre-filter according to claim 2 wherein: the filter flask (2) is provided with a drain outlet (21), the drain shaft (8) is sleeved (7) and comprises an outer drain pipe (72) arranged below the drain outlet (21) and a slide rail seat (71) clamped on the drain outlet (21), the slide rail seat (71) is arranged above the outer drain pipe (72), and the slide rail (711) is arranged on the slide rail seat (71).

4. A laminated backwash pre-filter according to claim 3 wherein: the sewage draining shaft (8) comprises an inner sewage draining pipe (81) and a rotating shaft (82), the inner sewage draining pipe (81) is inserted into the outer sewage draining pipe (72), a sewage draining hole (83) is arranged between the inner sewage draining pipe (81) and the rotating shaft (82), and the sewage draining hole (83) can extend out of the outer sewage draining pipe (72) or retract into the outer sewage draining pipe (72) in a vertical moving mode.

5. The laminated backwash pre-filter as claimed in claim 4 wherein: the inner framework (5) is internally provided with a rotary shaft sleeve (52), the rotary shaft (82) is in threaded connection with the rotary shaft sleeve (52), and the rotary shaft (82) can be rotatably screwed into the rotary shaft sleeve (52) or screwed out of the rotary shaft sleeve (52).

6. The laminated backwash pre-filter according to claim 1 or 2 or 3 or 4 or 5, wherein: lamination compresses tightly piece (6) including integrated into one piece's first body (61) and second body (62), and lug (64) are established in first body (61) outside, are equipped with recess (63) between first body (61) and second body (62), and lamination skeleton (3) card is established on recess (63), and inner skeleton (5) insert in second body (62) with second body (62) threaded connection.

7. The laminated backwash pre-filter as claimed in claim 6 wherein: the laminated frame (3) comprises a first frame (31) and a frame seat (32) which are arranged in the groove (63), wherein a first filtering water through hole (311) and a first back flushing water spraying hole (312) are formed in the first frame (31), the frame seat (32) is arranged above the first frame (31), a step portion (321) and a first guiding water inlet (322) are formed in the frame seat (32), and the first guiding water inlet (322) is formed below the step portion (321).

8. The laminated backwash pre-filter as claimed in claim 7 wherein: the inner framework (5) comprises a second framework (51) and framework pieces (53), the second filtering water through holes (511) and the second back flushing water spraying holes (512) are formed in the second framework (51), the second framework (51) is inserted into the first framework (31), and the framework pieces (53) can move up and down to open or close the first guide water inlets (322) with the step parts (321).

9. The laminated backwash pre-filter of claim 8 wherein: a second guide water inlet (54) is arranged above the framework piece (53), a machine head pipe (13) is arranged on the machine head (1), and the second guide water inlet (54) is inserted into the machine head pipe (13) or exposed out of the machine head pipe (13) along with the up-and-down movement of the inner framework (5).

10. The laminated backwash pre-filter according to claim 9 wherein: the machine head (1) comprises a water inlet pipe (11) and a water outlet pipe (12), the water outlet pipe (12) is communicated with a machine head pipe (13), and a pipe wall (14) is arranged between the water inlet pipe (11) and the water outlet pipe (12).