CN206793185U - One kind backwash fore filter - Google Patents

Abstract

The utility model provides a kind of backwash fore filter, belongs to field of mechanical technique.It solves the problems, such as troublesome in poeration during existing fore filter backwash.This backwash fore filter includes the body that lower end has drain outlet, body has inner chamber and filter core is provided with body, the cleaning rod that can be rotated relative to filter core is provided with filter core, there is soil pick-up passage on cleaning rod, it is external that this is stretched out in the upper end of cleaning rod, filter core lower end is threaded with sealing fuse, sealing fuse lower end is stretched into drain outlet and seals drain outlet, sealing fuse is provided with positioning hole, cleaning rod lower end is stretched into positioning hole and is formed with sealing fuse circumferentially fixed, and positioning hole is by soil pick-up passage and the intracavity inter-connection of body.Easy to operate, advantages of simple structure and simple when it has backwash.

Description

One kind backwash fore filter

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of fore filter, more particularly to a kind of backwash is preposition Filter.

Background technology

With the progress and the improvement of people's living standards of science and technology, people start to using water and diet in daily life Health has higher requirement.At present, increasing people starts using a kind of fore filter to carrying out primary purification with water, To be filtered to impurity in pipe network etc..The operation principle of fore filter is generally：Running water is before water inlet is linked into Put in the housing of filter, flowed out for users to use from delivery port again after the filter element filtering in housing.This is fore filter Normal operating conditions, but many impurity and jelly, impurity and jelly can be remained on filter core in use for some time Typically it is difficult to clean up, is all to connect blowoff valve, it is necessary to open blowoff valve when clearing up in the housing lower end of fore filter at present, makes The blow-off pipe of blowdown connects with water inlet, running water is flowed through from water inlet, by be will be attached to during cartridge surface on filter core Impurity develop and be discharged to by blowoff valve in blow-off pipe.

It is only simple using cartridge surface is run water through however, for the jelly being bonded on filter core, often because Not enough lead to not effectively clear up jelly from filter core for flow intensity.In order to solve this problem, China Patent was once disclosed a kind of fore filter [application number：201520252203.X], it includes being connected water with exterior line Connecting portion and the filter house communicated with connecting portion, filter house bottom are provided with the ball valve of draining, and filter house includes the screen pack of tubular, Inside screen pack along its it is axially arranged have a siphon type flusher, siphon type flusher is included along the axially arranged length of screen pack The sewage discharge tube of strip, drain outlet is additionally provided with inside siphon type flusher, sewage discharge tube connects with drain outlet, drain outlet end End connects with ball valve.Drain outlet in the sewage discharge tube and device of strip collectively forms siphon pipe, sewage discharge tube close to screen pack, Produce siphon type flusher when rinsing and rotate and produced whereby at sewage discharge tube negative pressure, pass through suction caused by siphonage Impurity on filter screen is continuously drawn into blow-off pipe by power in a steady stream, realizes the convenient cleaning of the impurity on filter screen.

Above-mentioned fore filter although can solve the problem that cleaning jelly the problem of, but it there is also some shortcomings it Place：When rinsing, it is necessary to which user manually opens ball valve, and siphon type flusher is also to be turned by people are manually operated to control Dynamic, more rib joints are set particular by the top of siphon type flusher, be connected knob on more rib joints, uses Family drives siphon type flusher to rotate by turning knob.This means that user first will open ball valve when rinsing, Then it is rotated further by knob and realizes flushing, therefore this structure causes operation ease insufficient, user operates relatively complicated.

The content of the invention

The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that one kind backwash prefilter Device, technical problem to be solved are operation eases when how to improve backwash.

The purpose of this utility model can be realized by following technical proposal：

One kind backwash fore filter, including lower end have the body of drain outlet, and body has inner chamber and in body It is interior to be provided with filter core, the cleaning rod that can be rotated relative to filter core is provided with filter core, there is soil pick-up passage on described cleaning rod, clearly The upper end stretching for washing rod is originally external, it is characterised in that described filter core lower end is threaded with sealing fuse, sealing fuse lower end Stretch into drain outlet and seal drain outlet, described sealing fuse is provided with positioning hole, and described cleaning rod lower end is stretched Enter in positioning hole and formed with sealing fuse circumferentially fixed, and positioning hole is by soil pick-up passage and the intracavity inter-connection of body.

In backwash, user directly rotates the upper end of cleaning rod with hand, due to lower end and the sealing fuse shape of cleaning rod Circumferentially fix, and seal the lower end that fuse is threaded in filter core, therefore the direction that only need to threadingly screw out rotates cleaning Sealing fuse will be driven together to rotate and moved up relative to filter core during rod.And because the lower end for sealing fuse leads to blowdown Road seals, then when being separated when sealing fuse and being moved up relative to filter core with drain outlet, drain outlet is just opened. Cleaning rod can also produce siphonage in rotation process as the siphon type flusher in background technology simultaneously, and will be miscellaneous Matter and jelly are drawn into the soil pick-up passage of cleaning rod, then entered again by positioning hole in the inner chamber of housing and finally by Drain outlet discharges.After the completion of backwash, the reset that sealed core can be achieved in handwheel need to be only rotated backward.

This backwash fore filter by cleaning rod with sealing fuse cooperation, sealing fuse and filter core cooperation and The cooperation of fuse and drain outlet is sealed, realizes when user rotates handwheel rotation and the drain outlet of cleaning rod simultaneously Open, improve operation ease of the user in backwash well, make the operation of user become simpler.

In above-mentioned backwash fore filter, the lower end of described cleaning rod has connecting portion, described positioning hole For non-circular hole, connecting portion insertion positioning hole is interior and the shape of connecting portion and the shape of positioning hole are identical.

Positioning hole is arranged to non-circular hole, connecting portion is shaped to identical with the shape of positioning hole, then when even When socket part is inserted into positioning hole, cleaning rod and sealing fuse can just be made by the cooperation of connecting portion shape and positioning hole shape Between formed it is circumferentially fixed, so as to user rotate handwheel to drive cleaning rod to rotate while drive sealing fuse together turn It is dynamic, and moving up and down for fuse is sealed to realize with the relation that filter core lower end is threadedly coupled by sealing fuse, to realize blowdown Passage opens or closes.

In above-mentioned backwash fore filter, there is shoulder block, described filter on the outside of the upper end of described sealing fuse Core lower end inside has convex edge, and the lower surface of described shoulder block is resisted against on the upper surface of convex edge.

Handwheel can be driven when rotating backward sealing fuse move down resets, in order to avoid seal fuse excessively move down and with Filter core is disengaged, and shoulder block is set on the outside of the upper end of sealing fuse, and filter core lower end inside sets convex edge, when sealing fuse is displaced downwardly to gear The amount of moving down that fuse is sealed when the upper surface of shoulder lower surface and convex edge leans reaches maximum.Doing so can prevent from sealing fuse Because excessively moving down and being separated with filter core, so as to ensure can to realize simultaneously when rotating handwheel again the rotation of cleaning rod and The opening of drain outlet, guarantee the purpose for smoothly reaching operation ease when improving backwash.

In above-mentioned backwash fore filter, described sealed core attached bag includes connecting cylinder and below connecting cylinder Seal head, connecting cylinder is threaded in filter core lower end, and described positioning hole is provided on connecting cylinder, under described seal head End is in drain outlet, and the upper end of seal head is circumferentially connected with some connecting pins, and connecting cylinder passes through each company with seal head Pin is connected.

Sealing fuse is formed with filter core by connecting cylinder and is threadedly coupled, while is sealed fuse and led to blowdown further through seal head Road seals, and because the connecting pin that seal head and connecting cylinder are connected on the outside of seal head upper end by circumference is connected, respectively connects Gap be present again between pin, therefore do not interfere with impurity and jelly and discharged from the gap between each connecting pin, i.e., not Influence whether normal blowdown.By using the sealing fuse of this structure so that user, which rotates handwheel, can realize cleaning simultaneously The rotation of rod and the opening of drain outlet, to improve operation ease of the user in backwash.

In above-mentioned backwash fore filter, the outside of described sealing fuse is provided with annular slot, annular slot Interior to be provided with back-up ring, the outer rim of back-up ring is stretched out outside the sidepiece of sealing fuse, when sealing fuse lower end and drain outlet phase separation when institute The back-up ring stated and the lower surface of filter core lean.

Only make the full opening of requirement in drain outlet for moving up for fuse of sealing, and when sealing fuse moves on When drain outlet is opened completely, sealing fuse continue to move up it is just meaningless, therefore sealing fuse outside set annular snap Groove, back-up ring in the annular slot after fixed relative to sealing fuse, by design ensure sealing fuse it is upper move to back-up ring with Fuse is sealed when the lower surface of filter core leans and is in the state being just kept completely separate with drain outlet, is so designed to arranging Dirty passage avoids user from being rotated further handwheel and flog a dead horse after opening completely.

In above-mentioned backwash fore filter, there is positioning step in described inner body wall, outside described filter core It is in step-like location division that side, which has, and the lower surface of described location division is resisted against on the upper surface of positioning step.

Due to the lower end seal with screwed joint fuse of filter core, filter core is caused equally to be abutted directly against in the prior art without the image of Buddha The intracavity bottom of body, therefore positioning step is set on the inwall of body, it is in step-like location division to be set on the outside of filter core, from And filter core is set to pass through the cooperation of location division and positioning step to be positioned in body.

In above-mentioned backwash fore filter, the outside of described cleaning rod along cleaning rod it is axially arranged have it is some Connecting hole, hairbrush is respectively and fixedly provided with each connecting hole.

Because cleaning rod is that user drives rotation manually, cause the slewing rate of cleaning rod so can't may be used quickly Energy can be such that the impurity being attached on filter core and mucilage binding thing can not be still inhaled into soil pick-up passage.Therefore on the outside edge of cleaning rod Axially arranged some connecting holes of cleaning rod, the fixed hairbrush in each connecting hole, then hairbrush will be with cleaning rod together Rotate and brush down impurity and jelly from filter core, so as to which backwash effect be better achieved.

Compared with prior art, this backwash fore filter passes through cooperation of the cleaning rod with sealing fuse, sealing fuse Cooperation with filter core and the cooperation of sealing fuse and blowdown head, cleaning can be driven simultaneously by realizing user and need to only rotating handwheel The rotation of rod and the connection of blow-off pipe and soil pick-up passage, improve convenience during backwash, make the operation of user well Become simpler.

Brief description of the drawings

Fig. 1 is the sectional view without hairbrush on this backwash fore filter cleaning rod.

Fig. 2 is the partial enlarged drawing in Fig. 1.

Fig. 3 is schematic diagram when cleaning rod is with hairbrush in this backwash fore filter.

Fig. 4 is side view when cleaning rod is without hairbrush in this backwash fore filter.

Fig. 5 is the schematic diagram of another angles of Fig. 4.

Fig. 6 is the schematic diagram that fuse is sealed in this backwash fore filter.

Fig. 7 is the schematic diagram for the mounting bracket being engaged with this backwash fore filter.

In figure, 1, body；1a, top cover；1a1, water inlet；1a2, delivery port；1b, housing；1b1, sewage draining exit；1b2, positioning Step；1c, blowdown head；1c1, drain outlet；2nd, filter core；2a, location division；2b, convex edge；3rd, cleaning rod；3a, soil pick-up passage；3b、 Sewage discharge tube；3c, connecting hole；3d, connecting portion；4th, hairbrush；5th, handwheel；6th, fuse is sealed；6a, connecting cylinder；6a1, shoulder block；6a2, determine Position hole；6a3, annular slot；6b, seal head；6b1, gear edge；6c, connecting pin；7th, back-up ring；8th, sealing ring；9th, mounting bracket；9a、 Installing plate；9b, support feet；10th, articulating joint.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

As shown in figure 1, a kind of backwash fore filter, including the body 1 being made up of top cover 1a and housing 1b, housing 1b Upper end open and top cover 1a are connected to housing 1b upper ends, and housing 1b inner chamber is sky, has water inlet 1a1 and water outlet on top cover 1a The intracavity inter-connection with housing 1b, housing 1b lower end have with housing 1b's respectively by mouth 1a2, water inlet 1a1 and delivery port 1a2 The sewage draining exit 1b1 of intracavity inter-connection, when in use, water inlet 1a1 tap into water pipe, delivery port 1a2 connected water outlet pipes, sewage draining exit 1b1 Connect blow-off pipe.

As depicted in figs. 1 and 2, filter core 2 is provided with housing 1b, filter core 2 is in the cylindrical shape of upper end open, the upper end of filter core 2 With being leant on the inside of top cover 1a, and sealing ring 8, housing 1b inner side are provided between top cover 1a inwalls on the outside of the upper end of filter core 2 With positioning step 1b2, it is in step-like location division 2a that the lower end outside of filter core 2, which has, and location division 2a lower surface is resisted against On positioning step 1b2 upper surface, and sealing ring 8 is provided between location division 2a outside and housing 1b inwall.Due to close The presence of seal 8 so that water inlet 1a1 is connected with housing 1b inner chamber by filter core 2.

As Figure 1-Figure 5, cleaning rod 3 is provided with filter core 2, has in cleaning rod 3 and is opened up from the bottom up of cleaning rod 3 Soil pick-up passage 3a, some sewage discharge tube 3b that are axially arranged with of the sidepiece of cleaning rod 3 along cleaning rod 3, sewage discharge tube 3b is in thin strip Shape, each sewage discharge tube 3b are connected with soil pick-up passage 3a.The sidepiece of cleaning rod 3 is also axially arranged with some connections along cleaning rod 3 Hairbrush 4 is respectively connected with hole 3c, each connecting hole 3c.The upper end of cleaning rod 3 passes outside top cover 1a upwards, and in the upper of cleaning rod 3 End thread is connected with handwheel 5.

As shown in Figure 2 and Figure 6, the lower end internal thread of filter core 2 is connected with sealing fuse 6, and the lower end for sealing fuse 6 is stretched out Outside the lower end of filter core 2.Sealing fuse 6 includes connecting cylinder 6a and seal head 6b, and connecting cylinder 6a is threaded in the lower end of filter core 2, There is shoulder block 6a1 on the outside of connecting cylinder 6a upper end, the lower end inside of filter core 2 has convex edge 2b, and shoulder block 6a1 lower surface is resisted against On convex edge 2b upper surface, positioning hole 6a2 has been provided on connecting cylinder 6a.The lower end of cleaning rod 3 has connecting portion 3d, connecting portion 3d Formed in positioning hole 6a2 and with connecting cylinder 6a circumferentially fixed, connecting portion 3d is externally provided with sealing ring 8.Positioning hole 6a2 is not rounded Shape hole, connecting portion 3d shape is set identical with positioning hole 6a2 shape, then when connecting portion 3d is inserted into positioning hole 6a2 After interior just connecting portion 3d and connecting cylinder 6a can form circumferentially fixed.

Seal head 6b is located at connecting cylinder 6a lower section, and seal head 6b upper ends are circumferentially connected with some connecting pin 6c, and close End socket 6b is connected with connecting cylinder 6a by each connecting pin 6c.Body 1 also includes the row being connected in housing 1b sewage draining exit 1b1 Dirty head 1c, blowdown head 1c lower end are stretched out outside housing 1b lower end, and the inner chamber phase with housing 1b is provided on blowdown head 1c The drain outlet 1c 1 of connection, blowdown head 1c and housing 1b are provided with sealing ring 8 between sewage draining exit 1b1 inwall.Seal head 6b In the 1c1 of drain outlet, seal head 6b outside is provided with sealing ring 8, and the outer rim of the sealing ring 8 is interior with drain outlet 1c1's Wall is in contact.Seal head 6b outside has gear along 6b1, keeps off along 6b1 and being resisted against on blowdown head 1c upper surface.

In normal filtration, the seal head 6b of sealing fuse 6 lower end be located at blowdown head 1c it is interior and by blow-off pipe and cleaning rod 3 Path cut-off between interior soil pick-up passage 3a, the water so accessed out of water inlet 1a1 can only be filtered first through filter core 2, then Into in housing 1b inner chamber, and finally ejected for users to use by delivery port 1a2.

During filter cartridge flushing 2, user rotates handwheel 5 with hand, because cleaning rod 3 and sealing fuse 6 by connecting portion 3d and are determined Cooperatively forming for position hole 6a2 is circumferentially fixed, and seals fuse 6 and be threaded in the lower end of filter core 2, then handwheel 5 will Cleaning rod 3 and sealing fuse 6 is driven together to be moved up relative to filter core 2, sealing fuse 6 and sewage draining exit 1b1 is separated and made Blow-off pipe is connected with the soil pick-up passage 3a in cleaning rod 3.And cleaning rod 3 while it is also in rotating during moving up , and the outside of cleaning rod 3 is connected with hairbrush 4, such hairbrush 4 will will be attached to filter as cleaning rod 3 together rotates Impurity and jelly on core 2 brush down.Again due to the sidepiece of cleaning rod 3 also offer vertically it is some with soil pick-up passage 3a phases The sewage discharge tube 3b of connection, and sewage discharge tube 3b is in thin strip, will be at each sewage discharge tube 3b during cleaning rod 3 rotates Negative pressure is produced, and the impurity and jelly that are brushed down by hairbrush 4 from the inwall of filter core 2 are drawn into soil pick-up passage through sewage discharge tube 3b In 3a, and finally discharged from blow-off pipe.

This backwash fore filter passes through cleaning rod 3 and the cooperation of sealing fuse 6, the cooperation of sealing fuse 6 and filter core 2 And sealing fuse 6 and blowdown head 1c cooperation, make user need to only rotate handwheel 5 can realize simultaneously the rotation of cleaning rod 3 with And the connection of blow-off pipe and soil pick-up passage 3a, compared with prior art, convenience during backwash is improved well, makes user Operation become simpler.

In order to avoid cleaning rod 3 and the sealing transition of fuse 6 move up and normal flushing is had influence on, is set on the outside of connecting cylinder 6a Annular slot 6a3 is put, back-up ring 7 is set in annular slot 6a3, the outer rim of back-up ring 7 is stretched out outside connecting cylinder 6a side walls, when rotation hand When the lower surface that wheel 5 makes to move to back-up ring 7 and filter core 2 on cleaning rod 3 and sealing fuse 6 leans, the displacement of sealing fuse 6 reaches To maximum, now seal fuse 6 and be also kept completely separate with blowdown head 1c.

As shown in fig. 7, this backwash fore filter can also configure a mounting bracket 9, mounting bracket 9 when mounted Take the shape of the letter U, mounting bracket 9 includes installing plate 9a and the support feet 9b dug from installing plate 9a both ends, mounting bracket 9 pass through peace The cooperation of the fastener such as loading board 9a and screw, bolt is fixed on wall, and the water inlet 1a1 on body 1 and delivery port 1a2 distinguishes It is resisted against on two support feet 9b of mounting bracket 9, and each support feet 9b end is respectively provided with the crotch bent up upwards, crotch For the water inlet 1a1 of body 1 and delivery port 1a2 are blocked, prevent body 1 from being skidded off from support feet 9b.In addition, such as Fig. 1 institutes Show, can also be all connected with articulating joint 10 outside water inlet 1a1 and delivery port 1a2 when in use, with facilitate connection water inlet pipe and Outlet pipe.

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (7)

1. one kind backwash fore filter, including lower end have drain outlet (1c1) body (1), body (1) has inner chamber And filter core (2) is provided with body (1), and the cleaning rod (3) that can be rotated relative to filter core (2) is provided with filter core (2), it is described There is soil pick-up passage (3a), body (1) is stretched out outside in the upper end of cleaning rod (3), it is characterised in that described filter on cleaning rod (3) Core (2) lower end is threaded with sealing fuse (6), and sealing fuse (6) lower end is stretched into drain outlet (1c 1) and leads to blowdown Road (1c1) seals, and described sealing fuse (6) is provided with positioning hole (6a2), and positioning hole is stretched into described cleaning rod (3) lower end Formed circumferentially fixed in (6a2) and with sealing fuse (6), and positioning hole (6a2) is by the inner chamber of soil pick-up passage (3a) and body (1) It is connected.

2. backwash fore filter according to claim 1, it is characterised in that the lower end tool of described cleaning rod (3) There is connecting portion (3d), described positioning hole (6a2) is non-circular hole, and connecting portion (3d) inserts in positioning hole (6a2) and connecting portion The shape of (3d) is identical with the shape of positioning hole (6a2).

3. backwash fore filter according to claim 1, it is characterised in that the upper end of described sealing fuse (6) Outside has shoulder block (6a1), and described filter core (2) lower end inside has convex edge (2b), and the lower surface of described shoulder block (6a1) is supported On the upper surface for leaning against convex edge (2b).

4. according to the backwash fore filter described in claim 1 or 2 or 3, it is characterised in that described sealing fuse (6) Seal head (6b) including connecting cylinder (6a) and below connecting cylinder (6a), connecting cylinder (6a) are threaded in filter core (2) In lower end, described positioning hole (6a2) is provided on connecting cylinder (6a), and described seal head (6b) lower end is located at drain outlet In (1c1), the upper end of seal head (6b) is circumferentially connected with some connecting pins (6c), and connecting cylinder (6a) and seal head (6b) are logical Each connecting pin (6c) is crossed to be connected.

5. backwash fore filter according to claim 4, it is characterised in that the outside of described sealing fuse (6) Provided with annular slot (6a3), back-up ring (7) is provided with annular slot (6a3), the outer rim of back-up ring (7) stretches out the side of sealing fuse (6) Outside wall, the lower surface phase of back-up ring (7) and filter core (2) described in when sealing fuse (6) lower end and being separated with drain outlet (1c1) Against.

6. according to the backwash fore filter described in claim 1 or 2 or 3, it is characterised in that described body (1) inwall Upper to have positioning step (1b2), it is in step-like location division (2a) to have on the outside of described filter core (2), described location division The lower surface of (2a) is resisted against on positioning step (1b2) upper surface.

7. according to the backwash fore filter described in claim 1 or 2 or 3, it is characterised in that described cleaning rod (3) There are some connecting holes (3c) in outside along the axially arranged of cleaning rod (3), and hairbrush (4) is respectively and fixedly provided with each connecting hole (3c).