CN203620353U - Forward and backward washing prefilter - Google Patents
Forward and backward washing prefilter Download PDFInfo
- Publication number
- CN203620353U CN203620353U CN201320854509.3U CN201320854509U CN203620353U CN 203620353 U CN203620353 U CN 203620353U CN 201320854509 U CN201320854509 U CN 201320854509U CN 203620353 U CN203620353 U CN 203620353U
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- China
- Prior art keywords
- filter screen
- lid
- filter
- communicated
- fore filter
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Abstract
The utility model relates to a forward and backward washing prefilter which comprises a cover body with a medium inlet and a medium outlet, a barrel and a cylindrical filter screen arranged in the barrel, wherein the medium inlet is communicated with internal space of the filter screen through a circulating channel, the medium outlet is only communicated with space between the barrel and the filter screen, the space between the barrel and the filter screen is just communicated with the internal space of the filter screen and the medium outlet, and a drain outlet which is provided with a drain valve is arranged in the internal space of the filter screen. The prefilter further comprises a switching mechanism arranged in the cover body to open and close the circulating channel. When the circulating channel is opened, forward washing is realized, and while the circulating channel is closed, backward washing is realized. The forward and backward washing prefilter provided by the utility model is simple in structure and easy to manufacture, and can wash in forward and backward directions, so that the prefilter is convenient to operate.
Description
Technical field
The utility model relates to filter technology field, particularly a kind of positive backwash fore filter.
Background technology
Running water has passed through a lot of pipelines before arriving each user through pipe network, and pipeline the inside exists the impurity such as a lot of silt, iron rust, floating material, can cause water to pollute if do not carried out the words of filtration treatment.Adopt fore filter to filter on the source that enters domestic water, can not only effectively eliminate secondary pollution, reduce water pollution disease, and can remove solid impurity, protection pipeline security of system, reduces system maintenance expense.
The fore filter that has occurred at present a kind of mode that comprises forward flushing and back flush, cleaning performance is good.As shown in Figure 1 and Figure 2, be respectively the profile of existing fore filter forward flushing and back flush duty, this fore filter comprises lid, pulling apparatus and the water-locator with medium import and media outlet.Described lifting device one end is connected with described water-locator; And described pulling apparatus comprises screw rod and screw rod knob.The axial limiting of screw rod is on described lid, and the end of thread is threaded with described water-locator, and stiff end stretches out outside described lid; Screw rod knob is fixedly connected with the stiff end of described screw rod.This lifting device can be realized moving axially of water-locator, and then realizes the switching of just rinsing with backwash.But this lifting device uses cumbersome, and also very inconvenient in the time of processing.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome just flushing and the backwash switching construction complexity of existing positive backwash fore filter, process loaded down with trivial details, awkward deficiency, the utility model provides a kind of positive backwash fore filter.
The utility model solves the technical scheme that its technical problem adopts: a kind of positive backwash fore filter, comprise have medium import and media outlet lid, cylindrical shell, be arranged on the tubular filter screen in described cylindrical shell, described medium import is communicated with the inner space of described filter screen by circulation passage;
Described media outlet only with described cylindrical shell and filter screen between space be communicated with, and space between described cylindrical shell and filter screen is only communicated with inner space and the described media outlet of described filter screen;
The inner space of described filter screen is provided with sewage draining exit, and sewage draining exit is provided with draining valve;
Also comprise the switching mechanism for circulation passage described in opening and closing being arranged in described lid, in the time that circulation passage is opened, realize forward and rinse, in the time that circulation passage is closed, realize back flush.
Stretch out outside described lid one end of described switching mechanism, and the other end is the lid shape portion being arranged in described circulation passage; Opening down and the opening of described lid shape portion is communicated with the sealing of the inner space of described filter screen, and the peripheral surface of described lid shape portion coordinates with described circulation passage rotatory sealing; The peripheral surface of described lid shape portion offers through hole.Only, in the time that through hole is faced described circulation passage, circulation passage is opened, and medium import is communicated with the inner space of filter screen.
Described switching mechanism stretches out on the one end outside described lid and is arranged with and can drives the rotating mechanism of described switching mechanism around its axis rotation.
Described rotating mechanism is downward opening lid shape, and its top inner wall is connected with described switching machine configuration face.
The circumferential inwall of described rotating mechanism is provided with positioning convex, and described lid is provided with locating convex block, and described positioning convex is corresponding with the position of locating convex block.This structure can realize the spacing of rotating mechanism stroke, convenient control.
Described rotating mechanism rotating distance is 40 °～180 °.
Described rotating mechanism rotating distance is 90 °.
Described rotating mechanism outer surface is provided with the concavo-convex alternating structure for improving frictional force, can be beneficial to the cooperation with hand.
For sewage is discharged together with impurity, described sewage outfalls setting is in the bottom of the inner space of described filter screen.Now, can also make hydraulic pressure maximize, more be conducive to blowdown.
The beneficial effects of the utility model are, positive backwash fore filter of the present utility model is simple in structure, are easy to manufacture, and can realize forward and reverse flushing, easy to operate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the profile that existing fore filter forward rinses duty.
Fig. 2 is the profile of existing fore filter back flush duty.
Fig. 3 is the structural representation of the optimum embodiment of positive backwash fore filter of the present utility model.
Fig. 4 is the explosive view of the optimum embodiment of positive backwash fore filter of the present utility model.
Fig. 5 is the structural representation of rotating mechanism in the optimum embodiment of positive backwash fore filter of the present utility model.
Fig. 6 is that the optimum embodiment forward of positive backwash fore filter of the present utility model rinses the profile of duty.
Fig. 7 is the profile of the optimum embodiment back flush of positive backwash fore filter of the present utility model duty.
In Fig. 1-2 101, screw rod knob, 102, collar, 103, lid, 104, lining, 105, the second filter screen, 106, water-locator, 107, the first filter screen, 108, filter screen skeleton, 109, cylindrical shell, 110, sealing ring, 111, Decorative Cover, 112, draining knob, 113, draining valve assembly, 114, screw rod, 115, O RunddichtringO, 116, divide chamber convex hole, 117, point chamber sealing ring.
In Fig. 3-5 1, lid, 1-1, medium import, 1-2, media outlet, 1-3, circulation passage, 1-4, locating convex block, 2, cylindrical shell, 3, tubular filter screen, 4, the inner space of filter screen, 5, space between cylindrical shell and filter screen, 6, sewage draining exit, 7, draining valve, 8, switching mechanism, 8-1, lid shape portion, 8-1-1, through hole, 9, rotating mechanism, 9-1, positioning convex, 9-2, concavo-convex alternating structure.
The specific embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Fig. 3-7, a kind of positive backwash fore filter, comprise have medium import 1-1 and media outlet 1-2 lid 1, cylindrical shell 2, be arranged on the tubular filter screen 3 in described cylindrical shell 2, described medium import 1-1 is communicated with the inner space 4 of described filter screen by circulation passage 1-3;
Described media outlet 1-2 only with described cylindrical shell 2 and filter screen 3 between space 5 be communicated with, and space 5 between described cylindrical shell 2 and filter screen 3 is only communicated with inner space 4 and the described media outlet 1-2 of described filter screen;
The bottom of the inner space 4 of described filter screen is provided with sewage draining exit 6, and sewage draining exit 6 is provided with draining valve 7;
Also comprise the switching mechanism 8 for circulation passage 1-3 described in opening and closing being arranged in described lid 1.
Stretch out outside described lid 1 one end of described switching mechanism 8, and the other end is the lid shape 8-1 of portion being arranged in described circulation passage 1-3; Opening down and the opening of the described lid shape 8-1 of portion is communicated with 4 sealings of the inner space of described filter screen, and the peripheral surface of the described lid shape 8-1 of portion coordinates with described circulation passage 1-3 rotatory sealing; The peripheral surface of the described lid shape 8-1 of portion offers through hole 8-1-1.
Described switching mechanism 8 stretches out on the one end outside described lid 1 and is arranged with and can drives the rotating mechanism 9 of described switching mechanism 8 around its axis rotation.
Described rotating mechanism 9 is downward opening lid shape, and its top inner wall is connected with described switching mechanism 8 shape faces.
The circumferential inwall of described rotating mechanism 9 is provided with a positioning convex 9-1, and described lid 1 is provided with two locating convex block 1-4, and described positioning convex 9-1 is corresponding with the position of locating convex block 1-4.
Described two locating convex block 1-4 are circumferential at a distance of 90 ° along described rotating mechanism 9, the starting point of rotating mechanism 9 strokes and terminal be the opening and closing of corresponding described circulation passage 1-3 respectively, and the through hole 8-1-1 of the lid shape 8-1 of portion of switching mechanism 8 faces or departs from circulation passage 1-3.
Described rotating mechanism 9 outer surfaces are provided with the concavo-convex alternating structure 9-2 for improving frictional force.
As shown in Figure 4, the fore filter that the utility model provides rinses duty in forward, now draining valve 7 is in conducting state, the through hole 8-1-1 of the lid shape 8-1 of portion of switching mechanism 8 is in the face of circulation passage 1-3, circulation passage 1-3 is opened, and medium import 1-1 is communicated with the inner space 4 of filter screen.Medium import 1-1 by lid 1 left side enters liquid medium, and now liquid medium can directly enter the inner space 4 of filter screen along circulation passage 1-3.Flushing filtering net surface, finally discharges along blowdown mouth inner chamber 6.
As shown in Figure 5, the fore filter that the utility model provides is in back flush state, now draining valve 7 is in opening state, the through hole 8-1-1 of the lid shape 8-1 of portion of switching mechanism 8 departs from circulation passage 1-3, make circulation passage 1-3 closure, medium import 1-1 is not communicated with mutually with the inner space 4 of filter screen, and the medium import 1-1 in lid 1 left side can not enter liquid medium.Water in original water pipe is due to the effect (horizontal level of water pipe is higher than the horizontal level of fore filter) of gravity and hydraulic pressure, pass back in the space 5 between cylindrical shell 2 and filter screen 3 from media outlet 1-2, liquid medium is got express developed outside to inside from filter screen 3, reach the effect of back flush, the sewage after cleaning is discharged by sewage draining exit 6.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to claim scope.
Claims (9)
1. a positive backwash fore filter, comprise have medium import (1-1) and media outlet (1-2) lid (1), cylindrical shell (2), be arranged on the tubular filter screen (3) in described cylindrical shell (2), described medium import (1-1) is communicated with the inner space (4) of described filter screen by circulation passage (1-3), it is characterized in that:
Described media outlet (1-2) only with described cylindrical shell (2) and filter screen (3) between space (5) be communicated with, and space (5) between described cylindrical shell (2) and filter screen (3) is only communicated with inner space (4) and the described media outlet (1-2) of described filter screen;
The inner space (4) of described filter screen is provided with sewage draining exit (6), and sewage draining exit (6) is provided with draining valve (7);
Also comprise the switching mechanism for circulation passage described in opening and closing (1-3) (8) being arranged in described lid (1).
2. positive backwash fore filter as claimed in claim 1, is characterized in that: stretch out outside described lid (1) one end of described switching mechanism (8), and the other end is for being arranged on the lid shape portion (8-1) in described circulation passage (1-3); Opening down and the opening of described lid shape portion (8-1) is communicated with inner space (4) sealing of described filter screen, and the peripheral surface of described lid shape portion (8-1) coordinates with described circulation passage (1-3) rotatory sealing; The peripheral surface of described lid shape portion (8-1) offers through hole (8-1-1).
3. positive backwash fore filter as claimed in claim 2, is characterized in that: described switching mechanism (8) stretches out on the outer one end of described lid (1) and is arranged with the rotating mechanism (9) that can drive described switching mechanism (8) to rotate around its axis.
4. positive backwash fore filter as claimed in claim 3, is characterized in that: described rotating mechanism (9) is downward opening lid shape, and its top inner wall is connected with described switching mechanism (8) shape face.
5. positive backwash fore filter as claimed in claim 4, it is characterized in that: the circumferential inwall of described rotating mechanism (9) is provided with positioning convex (9-1), described lid (1) is provided with locating convex block (1-4), and described positioning convex (9-1) is corresponding with the position of locating convex block (1-4).
6. positive backwash fore filter as claimed in claim 5, is characterized in that: the rotating distance of described rotating mechanism (9) is 40 °～180 °.
7. positive backwash fore filter as claimed in claim 6, is characterized in that: the rotating distance of described rotating mechanism (9) is 90 °.
8. positive backwash fore filter as claimed in claim 3, is characterized in that: described rotating mechanism (9) outer surface is provided with the concavo-convex alternating structure (9-2) for improving frictional force.
9. positive backwash fore filter as claimed in claim 1, is characterized in that: described sewage draining exit (6) is arranged on the bottom of the inner space (4) of described filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854509.3U CN203620353U (en) | 2013-12-23 | 2013-12-23 | Forward and backward washing prefilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854509.3U CN203620353U (en) | 2013-12-23 | 2013-12-23 | Forward and backward washing prefilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620353U true CN203620353U (en) | 2014-06-04 |
Family
ID=50806881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320854509.3U Expired - Fee Related CN203620353U (en) | 2013-12-23 | 2013-12-23 | Forward and backward washing prefilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620353U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906855A (en) * | 2015-06-27 | 2015-09-16 | 许宏娜 | Front-mounted backwash filter |
| CN106267964A (en) * | 2016-10-28 | 2017-01-04 | 江苏纯润环保科技有限公司 | The preposition water filter of back flush type |
| CN107754420A (en) * | 2017-09-26 | 2018-03-06 | 海宁市水享净水设备有限公司 | A kind of new fore filter |
| CN108159758A (en) * | 2018-01-18 | 2018-06-15 | 海宁市倍世环保科技有限公司 | The positive inner pressed fore filter rinsed with backwashing function of band |
-
2013
- 2013-12-23 CN CN201320854509.3U patent/CN203620353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906855A (en) * | 2015-06-27 | 2015-09-16 | 许宏娜 | Front-mounted backwash filter |
| CN106267964A (en) * | 2016-10-28 | 2017-01-04 | 江苏纯润环保科技有限公司 | The preposition water filter of back flush type |
| CN107754420A (en) * | 2017-09-26 | 2018-03-06 | 海宁市水享净水设备有限公司 | A kind of new fore filter |
| CN107754420B (en) * | 2017-09-26 | 2023-04-28 | 杭州水享智能科技集团有限公司 | Novel pre-filter |
| CN108159758A (en) * | 2018-01-18 | 2018-06-15 | 海宁市倍世环保科技有限公司 | The positive inner pressed fore filter rinsed with backwashing function of band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20161223 |