CN209548825U - A kind of backwash fore filter - Google Patents

Abstract

The utility model discloses a kind of backwash fore filter, which is provided with the first stopper section and the second stopper section inside filter upper end；It backwashes knob and blowdown valve is moved or is rotatablely connected.When normal filtration, close blowdown valve, first passage open, second channel disconnect, water flow from water inlet port flow into, first pass through the first water route, after by the second water route, finally from water outlet port flow out.When needing to backwash filter, blowdown valve is opened；Mobile or rotary back flushing knob, first passage disconnect, and second channel is opened, and water flow is flowed into from water inlet port, first pass through the second water route, after by the first water route, finally flowed out from blowdown valve, to achieve the purpose that backwash.So the backwash fore filter carries out disassembly, cleaning to filter manually in use, not needing user, use is very convenient.

Description

A kind of backwash fore filter

Technical field

The utility model relates to water purifier field more particularly to a kind of backwash fore filters.

Background technique

Fore filter is can to filter silt, the iron rust in tap water to first of coarse filtration equipment of full room water Equal large particulate matters.Fore filter is typically mounted at the front end of water supply pipe, so being named with " preposition " two word；And " filtering " then refers to the basic principle of this kind of equipment.With the elongated of time is used, dirt can be deposited in fore filter Dirt, it is not only not easy to clean after dirt is accumulated for a long time, filter can be also blocked, to influence the filter effect of filter and make Use the service life.Therefore, to fore filter carry out periodic cleaning when very it is necessary to.Traditional fore filter generally comprises bottle Body, water inlet port, filter core and water outlet port, tap water are flowed into from water inlet port, and through filtration core, large particulate matter is filtered, so Tap water is flowed out from water outlet port afterwards.This kind of fore filter structure is simple, but needs manually to dismantle fore filter, Its inside is cleaned, use is inconvenient.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is that: a kind of backwash easy to use is provided Fore filter has backwashing function；User can clean filter interior without dismantling filter.

The purpose of this utility model adopts the following technical scheme that realization:

A kind of backwash fore filter, including preposition bottle cap and preposition bottle body are equipped with bottle body in the preposition bottle body Bracket, the bottle body supports upper end are equipped with the first stopper section, are equipped with filter screen bracket, the filter screen bracket in the bottle body supports For being arranged strainer, the bottle body supports inner wall and the filter screen bracket outer wall form the first water route；

The filter screen bracket upper end is fixed with filter screen bracket upper cover, and the filter screen bracket upper cover divides the preposition bottle body It is divided into upper cavity and lower chamber, the bottle body supports are located at the lower chamber, and the filter screen bracket upper cover is equipped with connection upper cavity With the first passage in the first water route；The filter screen bracket upper cover is additionally provided with the second connecting pipe, sets in second connecting pipe There is the second stopper section, is connected to form the second water route with the second connecting pipe inside the filter screen bracket；

The preposition bottle cap is equipped with water inlet port, water outlet port and the first connecting pipe；The water inlet port with it is described Upper cavity is connected, and the water outlet port is connected with first connecting pipe, and first connecting pipe is sheathed on described Second connecting pipe, the wall of first connecting pipe are equipped with the second channel of connection upper cavity and the second water route；

The filter screen bracket lower end is fixed with blowdown valve, and the blowdown valve is equipped with backwash knob, the backwash Knob is suitable for that the blowdown valve is driven to move along preposition bottle body axis or rotate around preposition bottle body axis, and then with electric filter branch The preposition bottle body axis of cover rim is mobile on frame or rotates around preposition bottle body axis, so that the first stopper section can separate or open institute First passage is stated, while so that second channel can be opened or be separated in the second stopper section.

Further, the outer rim of the filter screen bracket upper cover is convex equipped with several along the diametrical direction of filter screen bracket upper cover Block, it is first recessed that the inner wall of the preposition bottle body upper end is equipped with several that cooperate with the convex block along the length direction of preposition bottle body Slot.

Further, the bottle body supports are equipped with scraping article, the scraping article and the strainer along the short transverse of bottle body supports Outer wall contact, the bottle body supports lower end is equipped with and scrapes knob, the bottle body supports with the rotation for scraping knob and Rotation.

Further, the bottle body supports are equipped with several hollow outs, and the scraping article is contacted with the inner wall of the preposition bottle body.

Further, filter core is equipped in the filter screen bracket, the filter core upper end is connect with the second connecting pipe, the filter Core lower end is resisted against the filter screen bracket lower end.

Further, the outer wall that the blowdown valve is contacted with the bottle body supports inner wall is equipped with first annular groove, described Ring type seal is correspondingly provided in first annular groove.

Further, the outer wall that the bottle body supports are contacted with the preposition bottle body inner wall is equipped with second annular groove, institute It states and is correspondingly provided with ring type seal in second annular groove.

Further, mounting bracket is provided on the preposition bottle cap, the mounting bracket is preposition for fixed backwash Filter.

Further, the backwash knob is threadedly engaged with the blowdown valve connect.

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

Backwash fore filter provided by the utility model, when being in filtration condition, blowdown valve is in close state, First passage is in the open state, and second channel is in close state, and water is flowed into from water inlet port, followed by upper cavity, the One channel, the first water route, strainer, the second water route, " clean water " is flowed out from water outlet port, to complete water filtration step.When When backwash fore filter needs to carry out internal washing, blowdown valve is in the open state, mobile or rotation backwash knob, To drive blowdown valve to move along preposition bottle body axis or be rotated around preposition bottle body axis.Since blowdown valve and filter screen bracket are fixed Connection, filter screen bracket is fixedly connected with filter screen bracket upper cover again, so filter screen bracket upper cover is with blowdown valve along preposition bottle body axis Movement is rotated around preposition bottle body axis, so that the first stopper section separates first passage, the second stopper section is opened at the same time Open second channel.At this point, water is flowed into from water inlet port, followed by upper cavity, second channel, the second water route, strainer, the first water Road, " sewage " is flowed out from blowdown valve, thus the step of realizing backwash.In conclusion the backwash fore filter in use, It only needs mobile or rotates backwash knob, the direction of water flow can be changed, thus realize two functions of filtering and backwash, It does not need user and disassembly, cleaning is carried out to filter.Compared with traditional fore filter, which is used It is very convenient.

Detailed description of the invention

Fig. 1 is the explosive view that the utility model backwashes fore filter embodiment 1；

Fig. 2 is the structural schematic diagram of preposition bottle cap in backwash fore filter shown in FIG. 1；

Fig. 3 is the structural schematic diagram that knob is scraped in backwash fore filter shown in FIG. 1；

Fig. 4 is the structural schematic diagram in backwash fore filter shown in FIG. 1 inside preposition bottle body；

Fig. 5 is the side view of backwash fore filter main working parts shown in FIG. 1；

Fig. 6 is cross-sectional view of the backwash fore filter shown in fig. 5 under the normal filtration state in the face A-A；

Fig. 7 is cross-sectional view of the backwash fore filter shown in fig. 5 under the backwashing state in the face A-A.

In figure: 1, preposition bottle cap；2, intake port；3, water outlet port；4, the first connecting pipe；41, second channel；5, preceding Set bottle body；51, the first groove；52, upper cavity；53, lower chamber；6, bottle body supports；61, scraping article；62, second annular groove；63, Second groove；64, the first stopper section；7, filter screen bracket；71, filter element upper cover；72, filter core lower cover；8, the first water route；9, strainer branch Frame upper cover；91, convex block；92, first passage；10, the second connecting pipe；101, the second stopper section；11, the second water route；12, blowdown Valve；121, blowdown port；122, first annular groove；13, knob is backwashed；131, the first retainer ring；14, knob is scraped；141, Second retainer ring；142, third groove；143, case ring；15, mounting bracket；16, pressure gauge；17, handle.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

As shown in Fig. 1-Fig. 7, the backwash fore filter that the utility model embodiment 1 provides, including preposition bottle cap 1, Preposition bottle cap 1 is equipped with water inlet port 2, water outlet port 3 and the first connecting pipe 4.Water outlet port 3 and 4 phase of the first connecting pipe Connection.The present embodiment port 2 that preferably intakes is open in the horizontal direction with water outlet port 3, and the first connecting pipe 4 is along the vertical direction Opening.

Backwash fore filter provided by the utility model further includes preposition bottle body 5, is equipped with bottle in preposition bottle body 5 Body support frame 6；6 upper end of bottle body supports is equipped with the first stopper section 64, and 6 lower port of bottle body supports stretches out the lower end surface of preposition bottle body 5；Bottle Filter screen bracket 7 is equipped in body support frame 6, which is equipped with several engrave for being arranged strainer (not shown), filter screen bracket Sky, water supply stream pass through.Preferred strainer is stainless steel seat type net in the present embodiment.The inner wall of bottle body supports 6 is outer with filter screen bracket 7 Wall forms the first water route 8.Secondly, 7 upper end of filter screen bracket is fixedly connected with filter screen bracket upper cover 9, this is fixedly connected with relationship can be with It is realized using modes such as integrated molding, glue bondings.Preposition bottle body 5 is divided into upper cavity 52 and cavity of resorption by filter screen bracket upper cover 9 Body 53.Wherein, water inlet port 2 is connected with upper cavity 52；Bottle body supports 6 are located at lower chamber 53.Filter screen bracket upper cover 9, which is equipped with, to be connected The first passage 92 of logical upper cavity 52 and the first water route 8, as shown in Figure 4；First stopper section 64 for separate or open this first Channel 92.Filter screen bracket upper cover 9 is equipped with the second connecting pipe 10, and the second connecting pipe 10 is equipped with the second stopper section 101.Its In, the second connecting pipe 10 is interspersed in 4 upper filter screen bracket of the first connecting pipe, 7 inside and is connected to be formed with the second connecting pipe 10 Second water route 11.Be provided on the wall of first connecting pipe 4 connection upper cavity 52 and the second water route 11 second channel 41, second Stopper section 101 is for opening or separating the second channel 41.Second channel 41 is notch in the present embodiment, as shown in Figure 2.It needs Remark additionally two o'clock: 1, the second connecting pipe can also be sheathed in the first connecting pipe；2, second channel also can be set In the second connecting pipe, correspondingly, the second stopper section is arranged in the first connecting pipe.

7 lower end of filter screen bracket is fixedly connected with blowdown valve 12, which is arranged in 6 lower part of bottle body supports.The blowdown Valve 12 includes blowdown port 121 and scum cock (not shown).12 lower end of blowdown valve is equipped with backwash knob 13.Wherein, it recoils Knob 13 and the removable connection of blowdown valve 12 are washed, is preferably threadedly coupled in the present embodiment 1.In the present embodiment 1, knob is backwashed When 13 upward rotation, blowdown valve 12 can be driven to move down along the axis of preposition bottle body 5；Due to blowdown valve 12 and filter screen bracket 7 are fixedly connected, and filter screen bracket 7 is fixedly connected with filter screen bracket upper cover 9 again, so filter screen bracket upper cover 9 is with blowdown valve 12 along preceding The axis for setting bottle body 5 moves down, so that the first stopper section 64 separates first passage 92, at the same time, the second stopper section 101 Second channel 41 is opened.In addition, the preposition bottle cap 1 and preposition bottle body 5 in the present embodiment 1 by screw thread it is also preferred that connected It connects.

As Figure 6-Figure 7, the backwash fore filter that the utility model embodiment 1 provides, working principle is as follows, Middle arrow indicates the direction of water flow.When being in filtration condition, blowdown valve 12 is in close state, and first passage 92, which is in, to be opened State, second channel 41 are in close state, and water is flowed into from water inlet port 2, followed by upper cavity 52, first passage 92, the One water route 8, strainer (not shown), the second water route 11, " clean water " arrive at water outlet port 3 by the second connecting pipe 10, from And complete water filtration step.When backwash fore filter needs to carry out internal washing, blowdown valve 12 is in the open state, to Upper mobile backwash knob 13, to drive blowdown valve 12 to move down along preposition 5 axis of bottle body.Due to blowdown valve 12 and strainer branch Frame 7 is fixedly connected, and filter screen bracket 7 is fixedly connected with filter screen bracket upper cover 9 again, so filter screen bracket upper cover 9 is with 12 edge of blowdown valve Preposition 5 axis of bottle body moves down, so that the first stopper section 64 separates first passage 92, at the same time the second stopper section 101 Open second channel 41.At this point, water from water inlet port 2 flow into, followed by upper cavity 52, second channel 41, the second water route 11, Strainer (not shown), the first water route 8, " sewage " is flowed out from blowdown valve 12, thus the step of realizing backwash.In conclusion should Fore filter is backwashed in use, turn is only needed to backwash knob 13, the direction of water flow can be changed, to realize filtering With two functions of backwash, does not need user and disassembly, cleaning are carried out to filter.Compared with traditional fore filter, the recoil Fore filter is washed using very convenient.

Further, the outer rim of filter screen bracket upper cover 9 is equipped with several convex blocks along the diametrical direction of filter screen bracket upper cover 9 91, it is first recessed that the inner wall of preposition 5 upper end of bottle body is equipped with several that cooperate with convex block 91 along the length direction of preposition bottle body 5 Slot 51.Convex block 91 is matched with the first groove 51, so that filter screen bracket upper cover 9 is limited on preposition bottle body 5, in order to preposition bottle Body 5 can be circumferentially rotated relative to filter screen bracket 7.

Further, bottle body supports 6 are equipped with scraping article 61, the outer wall of scraping article 61 and strainer along the short transverse of bottle body supports 6 Contact, for cleaning strainer.6 lower end of bottle body supports is equipped with and scrapes knob 14, this, which scrapes knob 14, can drive bottle body supports 6 to do Circumferential movement allows user more easily to complete the cleaning to 5 inner wall of strainer outer wall and preposition bottle body.The present embodiment 1 In, scrape knob 14 and the cooperation of 6 lower end of bottle body supports is preferably realized by mode below: it is non-for scraping the inner wall of knob 14 Curved surface, the outer wall of 6 lower end of bottle body supports be with scrape knob 14 it is non-curved match it is non-curved.When scraping knob 14 in Mandrel line rotate when, due to mating surface be it is non-curved, scraping knob 14 can not rotate relative to bottle body supports 6, to drive bottle The rotation of body support frame 6, to complete to scrape movement.The present embodiment 1 preferably scrape knob 14 inner wall be eight prisms outer surface Shape, the outer wall of 6 lower end of bottle body supports are also accordingly the shape of the outer surface of eight prisms.As shown in Figure 3, Figure 5 and Figure 6, it scrapes Knob 14 is washed to be buckled on the second groove 63 of bottle body supports 6 by the second retainer ring 141.It backwashes knob 13 and passes through the first retainer ring 131 are buckled on the third groove 142 for scraping knob 14.Backwash knob 13 and the outer wall case ring 143 for scraping knob 14 Connection, plays the role of decoration.

In the present embodiment 1, preferably scraping article is two, and the position contacted with wall surface is equipped with recess, two of them scraping article Recess just misplaces, so as to clean the full surface of wall surface, can reduce resistance when bottle body supports 6 rotate again at the same time Power.Further, bottle body supports 6 are equipped with several hollow outs, and scraping article 61 can also be contacted with the inner wall of preposition bottle body 5, is used for Clean the inner wall of preposition bottle body 5.

Further, filter core (not shown) is additionally provided in filter screen bracket.In the present embodiment 1, filter core upper end passes through on filter core Lid 71 is connect with the second connecting pipe 10, and filter core lower end is resisted against 7 lower end of filter screen bracket by filter core lower cover 72.Increase filter core, The secondary filter to water may be implemented, to obtain " more clean water ".Wherein, filter core can be carbon-point, antibacterial filter core, surpass Filter filter core etc..

Further, the outer wall that blowdown valve 12 is contacted with 6 inner wall of bottle body supports is equipped with first annular groove 122, the first ring Ring type seal (not shown) is correspondingly provided in connected in star 122；The outer wall that bottle body supports 6 are contacted with preposition 5 inner wall of bottle body is equipped with Second annular groove 62 is correspondingly provided with ring type seal in second annular groove 62.This ring type seal at two plays close The effect for sealing waterproof prevents water flow from flowing out from this gap from two.

Further, it is additionally provided with mounting bracket 15 on preposition bottle cap 1, before the mounting bracket 15 is for fixed backwash Set filter；It is also equipped with pressure gauge 16 on backwash fore filter, decoration is also functioned to while for testing atmospheric pressure Effect；It is also equipped with handle 17 on preposition bottle body 5, be used to open bottle body while also functioning to the effect of decoration.

Backwash knob provided by the utility model further includes embodiment 2.The main distinction of embodiment 2 and embodiment 1 exists In: when backwash fore filter needs to carry out internal washing, backwash knob is rotated around preposition bottle body axis, thus band Dynamic blowdown valve is rotated around preposition bottle body axis.Since blowdown valve is fixedly connected with filter screen bracket, filter screen bracket and and filter screen bracket Upper cover is fixedly connected, so filter screen bracket upper cover is rotated with blowdown valve around preposition bottle body axis, so that bottle body supports upper surface It relatively rotates with filter screen bracket upper cover, so that the first stopper section separates first passage；At the same time, the first connecting tube Road and the second connecting pipe also relatively rotate, so that second channel is opened in the second stopper section.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (9)

1. a kind of backwash fore filter, including preposition bottle cap and preposition bottle body, it is characterised in that:

Bottle body supports are equipped in the preposition bottle body, the bottle body supports upper end is equipped with the first stopper section, the bottle body supports It is inside equipped with filter screen bracket, the filter screen bracket is for being arranged strainer, the bottle body supports inner wall and the filter screen bracket outer wall Form the first water route；

The filter screen bracket upper end is fixed with filter screen bracket upper cover, and the preposition bottle body is divided by the filter screen bracket upper cover Upper cavity and lower chamber, the bottle body supports are located at the lower chamber, and the filter screen bracket upper cover is equipped with connection upper cavity and the The first passage in one water route；The filter screen bracket upper cover is additionally provided with the second connecting pipe, and second connecting pipe is equipped with the Two stopper sections, the filter screen bracket inside are connected to form the second water route with the second connecting pipe；

The preposition bottle cap is equipped with water inlet port, water outlet port and the first connecting pipe；The water inlet port and the epicoele Body is connected, and the water outlet port is connected with first connecting pipe, and first connecting pipe is sheathed on described second Connecting pipe, the wall of first connecting pipe are equipped with the second channel of connection upper cavity and the second water route；

The filter screen bracket lower end is fixed with blowdown valve, and the blowdown valve is equipped with backwash knob, the backwash knob Suitable for driving the blowdown valve to move along preposition bottle body axis or being rotated around preposition bottle body axis, and then drive on filter screen bracket The preposition bottle body axis of cover rim is mobile or rotates around preposition bottle body axis, so that the first stopper section can separate or open described the One channel, while so that second channel can be opened or be separated in the second stopper section.

2. a kind of backwash fore filter as described in claim 1, it is characterised in that: the outer rim of the filter screen bracket upper cover Several convex blocks, the length of the inner wall of the preposition bottle body upper end along preposition bottle body are equipped with along the diametrical direction of filter screen bracket upper cover Direction is equipped with several first grooves cooperated with the convex block.

3. a kind of backwash fore filter as claimed in claim 2, it is characterised in that: the bottle body supports are along bottle body supports Short transverse be equipped with scraping article, the scraping article contacts with the outer wall of the strainer, the bottle body supports lower end equipped with scraping knob, The bottle body supports are rotated with the rotation for scraping knob.

4. a kind of backwash fore filter as claimed in claim 3, it is characterised in that: the bottle body supports are equipped with several Hollow out, the scraping article are contacted with the inner wall of the preposition bottle body.

5. a kind of backwash fore filter as described in claim 1, it is characterised in that: be equipped with filter in the filter screen bracket Core, the filter core upper end are connect with the second connecting pipe, and the filter core lower end is resisted against the filter screen bracket lower end.

6. a kind of backwash fore filter as described in any one in claim 1-5, it is characterised in that: the blowdown valve and institute The outer wall for stating the contact of bottle body supports inner wall is equipped with first annular groove, is correspondingly provided with ring packing in the first annular groove Circle.

7. a kind of backwash fore filter as claimed in claim 6, it is characterised in that: the bottle body supports with it is described preposition The outer wall of bottle body inner wall contact is equipped with second annular groove, is correspondingly provided with ring type seal in the second annular groove.

8. a kind of backwash fore filter as described in any one in claim 1-5, it is characterised in that: on the preposition bottle cap It is provided with mounting bracket, the mounting bracket is for fixed backwash fore filter.

9. a kind of backwash fore filter as described in any one in claim 1-5, it is characterised in that: the backwash knob It is threadedly engaged and connect with the blowdown valve.