CN207805167U

CN207805167U - One kind spirally scraping fore filter

Info

Publication number: CN207805167U
Application number: CN201820028094.7U
Authority: CN
Inventors: 孟祥谱
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-01-09
Filing date: 2018-01-09
Publication date: 2018-09-04
Anticipated expiration: 2028-01-09

Abstract

One kind spirally scraping fore filter, water inlet end, water outlet including shell and set on shell upper end both sides, screen tube is provided in shell, there are spacing, screen tube to be equipped with several equally distributed filter hole between screen tube and inner walls, and screen tube is coated with one layer of filter screen, filter screen covers filter hole, screen tube top is equipped with several recoil hole flushings to connect with its inner space, and the inner walls are equipped with a scraping blade, and scraping blade is soft materials；The scraping blade width is more than the spacing between scraping blade outer wall and filter screen outer wall；The case top is equipped with a stroke hole to connect with enclosure interior space, and internal thread is equipped in stroke hole.The utility model it is spiral scrape fore filter can be when being rinsed blowdown, the unlatching of sewage draining exit can be realized and spirally scrape simultaneously by only needing turn knobs just, the dirt impurity on filter screen outer wall can more be cleaned out using spirally scraping during flushing pollution discharge.

Description

One kind spirally scraping fore filter

Technical field

The utility model is related to a kind of fore filters, especially a kind of spirally to scrape fore filter.

Background technology

Fore filter can filter silt, the iron rust etc. in tap water to first of coarse filtration equipment of full room water Large particulate matter, is generally mounted to the front end of pipeline, and the water inlet end that the water in pipeline first passes through fore filter enters filter In net cylinder, the then filtering through filtering net cylinder, flow is eventually flowed out from water outlet for using, process of the screen tube in filtering In, the filter screen on screen tube can be constantly in contact with impurity, and if things go on like this, impurity can even cover the filtering of screen tube Net network interface, flow can not big flow outflow screen tube outside, cause with water hydraulic pressure reduce, or even will appear screen tube blocking feelings Condition needs to clean screen tube to ensure the normal use of screen tube, and existing fore filter needs to carry out clearly When washing, the cleaning of screen tube is carried out generally by way of backwash, but there are some tough stains to be attached to filter screen outer wall On, the flow washed away from inside to outside from screen tube is extremely difficult to wash away filter screen outer wall, causes filter screen that can not be cleaned, If being intended to thoroughly clean screen tube, need to take apart screen tube out of fore filter, but this strainer The cleaning way of cylinder is extremely onerous, not only increases the workload of user of service, but will reduce cleaning efficiency.

The sewage draining exit of traditional fore filter can all be provided with valve, to the keying of control of sewage disposal mouth, if directly logical The mode for crossing flow backwash is rinsed screen tube, need to first open the valve at sewage draining exit, what backwash mode washed out Impurity can be discharged from sewage draining exit, and when fore filter is converted from normal filtration state to flushing pollution discharge state, it needs to pass through The knob on turn fore filter top could be realized, therefore fore filter then needs simultaneously to carry out backwash work The controls such as knob and valve switch is opened, the presence of multiple control switches causes the process of fore filter flushing pollution discharge to become Trouble, the workload of user of service increases therewith, and conversion time also extends therewith, influences the cleaning efficiency of fore filter.

Invention content

The technical problem to be solved by the present invention is to provide one kind spirally scraping fore filter, it can carried out When backwash, the unlatching of sewage draining exit can be realized and spirally scrape simultaneously by only needing turn knobs just, more can be in flushing pollution discharge mistake Cheng Zhong is cleaned out the dirt impurity on filter screen outer wall using spirally scraping.

The technical scheme in the invention for solving the above technical problem is：

The utility model disclose it is a kind of spirally scrape fore filter, including shell and set on shell upper end both sides Water inlet end, water outlet are provided with screen tube in shell, and there are spacing between screen tube and inner walls, if screen tube is equipped with Equally distributed filter hole is done, screen tube is coated with one layer of filter screen, and filter screen covers filter hole, and screen tube top is set There are several recoil hole flushings to connect with its inner space, it is characterised in that：The inner walls are equipped with a scraping blade, and scraping blade is soft Property material；The scraping blade width is more than the spacing between scraping blade outer wall and filter screen outer wall；The case top is equipped with one and shell The stroke hole that body inner space connects is equipped with internal thread in stroke hole；The screen tube top center is equipped with a valve rod； The stem lower portion outer wall is equipped with the external screw thread with internal thread bolt, and valve rod top is pierced by stroke hole and is connected with a knob； It is provided with an opening below the screen tube, opening is bolted with a blowdown plug；The housing lower surface is equipped with internal empty with it Between the sewage draining exit that connects；Sewage draining exit is sealed and is blocked by the blowdown plug.

It is mutually fixed by screw between the valve rod and knob.

A connector is equipped at the sewage draining exit；It is equipped with a protective cover outside the connector, protective cover bottom surface is provided with an installation Mouthful, installing port internal diameter is more than connector outer diameter；The protective cover length is more than joint length.

The screen tube external wall of upper portion is equipped with a snap ring；It is formed with a limit between the strainer drum outer wall and blowdown plug Step；The scraping blade is between snap ring and limited step；All between activity between the scraping blade and snap ring, limited step Away from.

The utility model has the beneficial effects that：

Compared with prior art, use the utility model structure it is spiral scrape fore filter can be by for soft material The scraping blade of material scrapes the dirt impurity on filter screen outer wall in backwash process, with screen tube move up it is a few circle with And during moving down several circles, filter screen outer wall can be made to be scraped completely, the dirt impurity on filter screen outer wall is obtained It thoroughly removes, and during screen tube moves up, scraping blade can not only be made to scrape filter screen outer wall, and backwash can be made Hole is opposite with water outlet, and the filtration condition of fore filter is converted to flushing pollution discharge state, can more open simultaneously sewage draining exit, nothing It need to again go to open the valve at sewage draining exit after being converted into flushing pollution discharge state, realize a switch while controlling multiple positions Effect, can effectively simplify the structure of fore filter, so that production cost is reduced, more can effectively reduce fore filter Operation difficulty and raising operating efficiency.

Description of the drawings

Fig. 1 is the structural schematic diagram that the utility model spirally scrapes fore filter；

Fig. 2 is the partial structural diagram that the utility model spirally scrapes fore filter top；

Fig. 3 is the partial structural diagram that the utility model spirally scrapes fore filter lower part.

Specific implementation mode

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments：

Please refer to Fig.1 to Fig.3, the utility model provide it is a kind of spirally scrape fore filter, including shell 1 and set Water inlet end 2, water outlet 3 in 1 upper end both sides of shell, are provided with screen tube 4 in shell 1, between 1 inner wall of screen tube 4 and shell There are spacing, screen tube 4 is equipped with several equally distributed filter hole, and screen tube 4 is coated with one layer of filter screen 5, filters Net 5 covers filter hole, the recoil hole flushings 6 that 4 top of screen tube connects equipped with several and its inner space, in the shell 1 Wall is equipped with a scraping blade 7, and scraping blade 7 is soft materials；Between 7 width of the scraping blade is more than between 5 outer wall of 7 outer wall of scraping blade and filter screen Away from；1 top of the shell is equipped with a stroke hole 8 to connect with 1 inner space of shell, and internal thread 9 is equipped in stroke hole 8；Institute It states 4 top center of screen tube and is equipped with a valve rod 10；10 lower part outer wall of the valve rod is equipped with the outer spiral shell with 9 bolt of internal thread Line 11,10 top of valve rod are pierced by stroke hole 8 and are connected with a knob 12；4 lower section of the screen tube is provided with an opening 13, opening 13 Place is bolted with a blowdown plug 14；1 lower surface of the shell is equipped with the sewage draining exit 15 to connect with its inner space；The blowdown Sewage draining exit 15 is sealed and is blocked by plug 14.

It is fixed by 16 phase of screw between the valve rod 10 and knob 12.

A connector 17 is equipped at the sewage draining exit 15；It is equipped with a protective cover 18,18 bottom surface of protective cover outside the connector 17 It is provided with an installing port 19,19 internal diameter of installing port is more than 17 outer diameter of connector；18 length of the protective cover is more than 17 length of connector.

4 external wall of upper portion of the screen tube is equipped with a snap ring 20；It is formed between 4 outer wall of the screen tube and blowdown plug 14 One limited step 21；The scraping blade 7 is between snap ring 20 and limited step 21；The scraping blade 7 and snap ring 20, limited step 21 Between all have activity spacing 22.

The application method of the utility model is as follows：

Before using fore filter, first passes through water inlet end 2 and install fore filter to pipeline with water outlet 3, this When fore filter recoil hole flushing 6 blocked by 1 inner wall of shell, after flow is flowed into from water inlet end 2 in shell 1, flow is just It can be entered in screen tube 4 by the import of 4 upper end of screen tube, the flow in last screen tube 4 can then be flowed by filter screen 5 Into 1 inner space of shell, flow once flows through filter screen 5, and filter screen 5 will play filter effect, and blowdown plug 14 will Sewage draining exit 15 blocks, and as flow is constantly full of 1 inner space of shell, flow is eventually flowed out from water outlet 3, is flowed into corresponding Pipeline in for using.

When fore filter is backwashed to clean screen tube, user of service can turn knobs 12, due to Knob 12 is connected with valve rod 10, therefore when 12 turn of knob, valve rod 10 rotates therewith, and the outer spiral shell of 10 lower part of valve rod 9 bolt of internal thread of line 11 and 8 inner wall of stroke hole, valve rod 10 can carry out upper bottom along internal and external threads track when rotated It moves, during 10 upper and lower displacement of valve rod, screen tube 4 moves up and down therewith, when user of service controls screen tube 4 by knob 12 When moving up, the blowdown plug 14 for being bolted in 4 lower section of screen tube moves up therewith, and blowdown plug 14 no longer blocks sewage draining exit 15 Sealing, sewage draining exit 15 are in the state to connect with 1 inner space of shell, and as screen tube moves up, the import of screen tube upper end It being staggered with water inlet end, water inlet end 2 can not intake in screen tube 4 again, and recoil hole flushing 6 then moves to the position opposite with water outlet 3, And the water in the pipeline being connected with water outlet 3 recoils to water outlet 3, and entered in screen tube 4 by the hole flushing 6 that recoils, As flow continually enters in screen tube 4, the hydraulic pressure of flow itself then can constantly wash away 4 inner wall of screen tube, The impurity for washing away out is taken out of by 5 network interface of filter screen to outside screen tube 4, and flow is in the process by 5 network interface of filter screen In, the impurity in 5 network interface of filter screen can equally be washed away.

In 4 rotary course of screen tube, since scraping blade 7 is fixed, 7 width of scraping blade is more than 7 outer wall of scraping blade and filter screen 5 Spacing between outer wall, therefore scraping blade 7 can be adequately in contact with 5 outer wall of filter screen, as screen tube 4 screws out generation Centrifugal force, scraping blade 7 in contact can then form reaction force, under the action of reaction force, can improve scraping blade 7 and scrape Dynamics, to improve cleaning quality, when scraping blade 7 constantly scrapes 5 surface of filter screen, scraping blade 7 can be by filter screen 5 The dirt impurity adhered on outer wall scrapes, and the dirt impurity fallen is made equally to be mixed into flow, and scraping blade 7 is flexible material, Scraping blade 7 will not cause to damage while scraping 5 outer wall of filter screen to 5 outer wall of filter screen, itself soft speciality the case where Under, scraping blade 7 can deform, and contact of the scraping blade 7 with the contact of 5 outer wall of filter screen from line with face is made to be converted to connecing for face and face It touches, it is wider to make to scrape range, scrapes more efficient, and turn screen tube 4 one encloses, and 5 outer wall of filter screen just can be made to wait until to clean completely, User of service only need to be by knob 12 to about more than 4 circles of turn of screen tube, just can be complete by the dirt impurity on 5 outer wall of filter screen It cleans up, in the case where sewage draining exit 15 is opened, the dirt impurity being mixed in flow will be discharged to outside by sewage draining exit 15 All dirt impurity just can finally be discharged as flow endlessly enters screen tube 4, fore filter is made to obtain by boundary Thoroughly cleaning.

In summary it is found that the utility model can by the scraping blade 7 for flexible material in backwash process to filter screen 5 Dirt impurity on outer wall is scraped, and as screen tube 4 is during moving up several circles and moving down a few circles, can make filtering 5 outer wall of net is scraped completely, and the dirt impurity on 5 outer wall of filter screen is thoroughly removed, and moves up process in screen tube 4 In, scraping blade 7 can not only be made to scrape 5 outer wall of filter screen, and recoil hole flushing 6 can be made opposite with water outlet 3, by preposition mistake The filtration condition of filter is converted to flushing pollution discharge state, can more open simultaneously sewage draining exit 15, without being converted into flushing pollution discharge shape It goes to open the valve at sewage draining exit 15 again after state, realize a switch while controlling the effect at multiple positions, it being capable of effectively letter The structure for changing fore filter, makes production cost be reduced, more can effectively reduce fore filter operation difficulty and raising Operating efficiency.

It is fixed by 16 phase of screw between valve rod 10 and knob 12, convenient for the dismounting between valve rod 10 and knob 12, if Knob 12 damages, and can fast implement the replacement of knob 12.

Connector 17 is equipped at sewage draining exit 15, the presence of connector 17 can fast implement between sewage draining exit 15 and blowoff line Connection convenient for passing through blowoff line by sewage discharge to actually required position, and is equipped with protective cover, protective cover outside connector 17 18 bottom surfaces are provided with installing port 19, and 19 internal diameter of installing port is more than 17 outer diameter of connector, and 18 length of protective cover is more than 17 length of connector, protection The presence of cover 18 can block the link position between connector 17 and blowoff line, make the company between connector 17 and blowoff line It connects position to be protected, user of service or other things is avoided to carelessly touch the feelings that link position causes blowoff line to fall off Condition.

4 external wall of upper portion of screen tube is equipped with snap ring 20, and limited step is formed between 4 outer wall of screen tube and blowdown plug 14 21, scraping blade 7 all has activity spacing between snap ring 20 and limited step 21 between scraping blade 7 and snap ring 20, limited step 21 22, the presence of activity spacing 22 can ensure moving up and down for screen tube 4, and snap ring 20 can play up and down with limited step 21 The effect of limit works as user of service the case where avoiding user of service rotating cycle excessively causes internal and external threads to be detached from when scraping When so that screen tube 4 is moved up certain distance by knob 12,7 lower edge of scraping blade will be in contact with 21 upper surface of limited step, User of service can clearly experience resistance from knob 12 at this time, then can work as screen tube by knob backspin screen tube When 7 top edge of scraping blade is in contact with 20 lower surface of snap ring in folding process, user of service equally can clearly experience resistance Power if user of service will also scrape can continue that screen tube is made to move up.

Claims

1. one kind spirally scraping fore filter, including shell and the water inlet end set on shell upper end both sides, water outlet, shell It is provided with screen tube in vivo, there are spacing, screen tube to be equipped with several equally distributed filterings between screen tube and inner walls Hole, screen tube are coated with one layer of filter screen, and filter screen covers filter hole, and screen tube top is equipped with several internal empty with it Between the recoil hole flushing that connects, it is characterised in that：The inner walls are equipped with a scraping blade, and scraping blade is soft materials；The scraping blade Width is more than the spacing between scraping blade outer wall and filter screen outer wall；The case top connects equipped with one with enclosure interior space Stroke hole, internal thread is equipped in stroke hole；The screen tube top center is equipped with a valve rod；The stem lower portion outer wall Equipped with the external screw thread with internal thread bolt, valve rod top is pierced by stroke hole and is connected with a knob；It is opened below the screen tube There are an opening, opening to be bolted with a blowdown plug；The housing lower surface is equipped with the sewage draining exit to connect with its inner space； Sewage draining exit is sealed and is blocked by the blowdown plug.

2. one kind according to claim 1 spirally scrapes fore filter, it is characterised in that：The valve rod and knob it Between mutually fixed by screw.

3. one kind according to claim 1 spirally scrapes fore filter, it is characterised in that：It is equipped at the sewage draining exit One connector；A protective cover is equipped with outside the connector, protective cover bottom surface is provided with an installing port, and installing port internal diameter is more than outside connector Diameter；The protective cover length is more than joint length.

4. one kind according to claim 1 spirally scrapes fore filter, it is characterised in that：Outside the screen tube top Wall is equipped with a snap ring；It is formed with a limited step between the strainer drum outer wall and blowdown plug；The scraping blade be located at snap ring with Between limited step；All there is activity spacing between the scraping blade and snap ring, limited step.