CN202724820U - Back flushing switching device for prefilter - Google Patents
Back flushing switching device for prefilter Download PDFInfo
- Publication number
- CN202724820U CN202724820U CN 201220337041 CN201220337041U CN202724820U CN 202724820 U CN202724820 U CN 202724820U CN 201220337041 CN201220337041 CN 201220337041 CN 201220337041 U CN201220337041 U CN 201220337041U CN 202724820 U CN202724820 U CN 202724820U
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- Prior art keywords
- housing
- switching device
- piston
- backwash
- device shifter
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Abstract
The utility model discloses a back flushing switching device for a prefilter. The prefilter comprises a housing, as well as a filtering element and the back flushing switching device that are arranged in the housing, wherein a water inlet and a water outlet are formed in the upper part of the housing, and a sewage drain outlet is formed in the lower part the housing. The switching device comprises a knob, a crankshaft, a bracket and a sewage drain outlet piston, wherein the knob is arranged on the housing; the crankshaft is fixedly interlocked with the knob; a cranked bracket rod and a cranked piston rod are arranged on the crankshaft at a 180-degree angle; the lower end of the bracket is fixed on the cranked bracket rod; a water blocking plate is arranged at the upper end of the bracket, and corresponds to a back flushing water inlet of a filter screen component; the upper end of the sewage drain outlet piston is fixed on the cranked piston rod; and the lower end face of the sewage drain outlet piston is plugged on the sewage drain outlet of the housing. The device can be switched without the limitation of water pressure.
Description
Technical field
The utility model relates to a kind of filter, espespecially a kind of backwash switching device shifter of fore filter.
Background technology
The daily drinking water of people mostly comes from the municipal tap water, although running water has passed through filtration and sterilization processing, inevitably can have incrustation scale in it, also inevitably can retain the chlorine that some sterilizations are used in the running water.And running water will pass through a lot of pipelines before being transported to each user, and there are again the impurity such as a lot of silts, iron rust or floating material usually in the pipeline the inside, for skyscraper, also need secondary water-supply, these all can cause secondary pollution to running water, have influence on people's health status.Therefore people begin the hygienic issues of running water is paid attention to.Filter can effectively filter residual chlorine in incrustation scale in the running water and the water, present many families all in water pipe the access filter to reach the purpose that running water is filtered, to eliminate secondary pollution.
Fore filter is exactly the wherein a kind of of above-mentioned filter, fore filter generally is arranged on the upstream of all filters, be used for coarse filtration, therefore the particulate contamination in the filtered water only needs to use common screen pack to adopt the physical filtering mode just can reach the requirement of filtration.Because what filter is particulate contamination, fore filter does not need more renew cartridge after using a period of time, but the mode of employing backwash just can be clean with filter gauze cleaning.Regularly carrying out backwash, therefore the backwash switching device shifter need to be set to carry out the switching of normal filtration duty and backwash duty just because of fore filter in filter.The elastic force that present backwash switching device shifter mostly relies on the pressure of water inlet to overcome spring realizes, when the flushing state be intake pressure greater than spring pressure, make the sealing of switching device and body, thereby make the water (flow) direction change.But in the situation of low pressure, hydraulic pressure can not Compress Spring, carries out the position and switches, and can not reach the effect that backwash is switched.Typical structure such as application number are the Chinese invention patent application of CN200680056160.1.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of backwash switching device shifter that is not subjected to the hydraulic pressure restriction can realize the fore filter that switches.
For solving the problems of the technologies described above, technical solution of the present utility model is:
A kind of backwash switching device shifter of fore filter, this fore filter comprise housing and are arranged on housing interior filter core and backwash switching device shifter that be provided with water inlet and delivery port above this housing, the below is provided with sewage draining exit; Described switching device shifter comprises knob, bent axle, support and sewage draining exit piston; This knob is installed on the described housing, and this bent axle and this knob be interlock fixedly, and bent axle is provided with support curved bar and the piston curved bar that direction becomes 180 degree to arrange; Described support lower end is fixed on this support curved bar, and it is relative with the backwash water inlet of described net-filter assembly that the upper end is provided with water fender; Described sewage draining exit piston upper end is fixed on this piston curved bar, and the lower surface shutoff is on the sewage draining exit of described housing.
Be provided with two symmetrically arranged support curved bars on the described bent axle, described support lower end arranges two connecting portions and links to each other with two support curved bars respectively.
Be provided with black box between described bent axle and the described housing.
After adopting such scheme, the utility model arranges a manual switching mechanism, the water inlet of top and the draining of below is switched, and need not rely on hydraulic pressure, therefore is not subjected to the impact of hydraulic pressure can realize the purpose of switching.In addition, switching device shifter described in the utility model only needs a bent axle to get final product the support of interlock top to switch normal filtration water inlet and backwash water inlet, also but the sewage draining exit piston of interlock below is opened or is closed sewage draining exit simultaneously, also only need the water inlet direction of a changeable top of action and the sewage draining exit of control below to open and close during operation, therefore such switching device shifter is not only simple in structure, and easy to operate.
Description of drawings
Fig. 1 is the three-dimensional exploded view of fore filter described in the utility model;
Fig. 2 is the assembled sectional view (normal operating conditions) of fore filter described in the utility model;
Fig. 3 is the assembled sectional view (backwash duty) of fore filter described in the utility model;
Fig. 4 is the three-dimensional exploded view of backwash switching device shifter described in the utility model;
Fig. 5 is the assembled sectional view (normal operating conditions) of backwash switching device shifter described in the utility model;
Fig. 6 is the assembled sectional view (backwash duty) of backwash switching device shifter described in the utility model;
Fig. 7 is the three-dimensional combination figure (normal operating conditions) of backwash switching device shifter described in the utility model;
Fig. 8 is the three-dimensional combination figure (backwash duty) of backwash switching device shifter described in the utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
What the utility model disclosed is a kind of backwash switching device shifter of fore filter, such as Fig. 1 and shown in Figure 3, described fore filter mainly comprises housing 1 and is arranged on element kit 2 and backwash switching device shifter 3 in the housing 1, this housing 1 top is provided with water inlet 11 and delivery port 12, and the below is provided with sewage draining exit 13.Described element kit 2 is provided with the elements such as filter screen, is used for the water of flowing through is carried out coarse filtration, and it is not this case emphasis, does not describe in detail at this.
Key of the present utility model is: to shown in Figure 8, described switching device shifter 3 comprises knob 31, bent axle 32, support 33 and sewage draining exit piston 34 such as Fig. 4 in cooperation.Wherein:
Described knob 31 is installed on the described housing 1, and described bent axle 32 and this knob 31 be interlock fixedly.This bent axle 32 is provided with support curved bar 321 and the piston curved bar 322 that direction becomes 180 degree to arrange.Described support 33 lower ends are fixed on the support curved bar 321 of this bent axle 32, and it is relative with the backwash water inlet 21 of described net-filter assembly 2 that the upper end is provided with water fender 331.Described sewage draining exit piston 34 upper ends are fixed on the piston curved bar 322 of this bent axle 32, and the lower surface shutoff is on the sewage draining exit 13 of described housing 1.
Operation principle of the present utility model is:
Cooperate Fig. 2, Fig. 5 and shown in Figure 7, when filtering work normally, rotation knob 31 makes the support curved bar 321 of bent axle 32 towards upper piston curved bar 332 down; Thereby make support 33 move upward, the water fender 331 on it blocks the backwash water inlet 21 of net-filter assembly 2; Sewage draining exit piston 34 moves downward and seals described sewage draining exit 13 simultaneously.Water enters in the housing 1 from the water inlet 11 of filter, flow downward from the gap between housing 1 and the water fender 331, and enter into the inboard of element kit 2 from the outside of element kit 2, the process that enters is filtered by filter screen, and the water after the filtration flows out via delivery port 12 from the inside of element kit 2 again.
Cooperate Fig. 3, Fig. 6 and shown in Figure 8, when carrying out backwash, rotation knob 31 makes the support curved bar 321 of bent axle 32 towards lower piston curved bar 332 up; Thereby support 33 is moved downward, and the water fender 331 on it exposes the backwash water inlet 21 of net-filter assembly 2, and seals the gap between housing 1 and the water fender 331; Sewage draining exit piston 34 is moved upward, described sewage draining exit 13 is opened.Water enters in the housing 1 from the water inlet 11 of filter, enters within the element kit 2 from the backwash water inlet 21 from element kit 2, outwards washes away filter screen from the inboard of element kit 2 again, and last sewage is flowed out by the outside sewage draining exit 13 of element kit 2.
Further, move in order to make described support 33 balances, two symmetrically arranged support curved bars 321 can be set on the described bent axle 32, described support 33 lower ends arrange two connecting portions 332 and link to each other with two support curved bars 321 respectively.
In addition, black box 35 can be set to seal between described bent axle 32 and the described housing 1, prevent seepage.
The above is preferred embodiment of the present utility model only, is not to limit the scope that the utility model is implemented.So variation or the modification in every case done according to claim of the present utility model and specification all should belong within the scope that the utility model patent contains.
Claims (3)
1. the backwash switching device shifter of a fore filter, this fore filter comprise housing and be arranged on filter core and backwash switching device shifter in the housing, and this housing top is provided with water inlet and delivery port, and the below is provided with sewage draining exit; It is characterized in that: described switching device shifter comprises knob, bent axle, support and sewage draining exit piston; This knob is installed on the described housing, and this bent axle and this knob be interlock fixedly, and bent axle is provided with support curved bar and the piston curved bar that direction becomes 180 degree to arrange; Described support lower end is fixed on this support curved bar, and it is relative with the backwash water inlet of described net-filter assembly that the upper end is provided with water fender; Described sewage draining exit piston upper end is fixed on this piston curved bar, and the lower surface shutoff is on the sewage draining exit of described housing.
2. the backwash switching device shifter of fore filter according to claim 1, it is characterized in that: be provided with two symmetrically arranged support curved bars on the described bent axle, described support lower end arranges two connecting portions and links to each other with two support curved bars respectively.
3. the backwash switching device shifter of fore filter according to claim 1 is characterized in that: be provided with black box between described bent axle and the described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337041 CN202724820U (en) | 2012-07-12 | 2012-07-12 | Back flushing switching device for prefilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337041 CN202724820U (en) | 2012-07-12 | 2012-07-12 | Back flushing switching device for prefilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202724820U true CN202724820U (en) | 2013-02-13 |
Family
ID=47650573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337041 Expired - Lifetime CN202724820U (en) | 2012-07-12 | 2012-07-12 | Back flushing switching device for prefilter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202724820U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906855A (en) * | 2015-06-27 | 2015-09-16 | 许宏娜 | Front-mounted backwash filter |
| CN105502743A (en) * | 2015-12-29 | 2016-04-20 | 常州罗盘星检测科技有限公司 | Multiway filter |
| CN106237683A (en) * | 2016-08-23 | 2016-12-21 | 张萍 | A kind of defecator with efficient backwashing function for air water machine |
| CN107376475A (en) * | 2017-08-11 | 2017-11-24 | 安徽聚合自动化工程有限公司 | A kind of straight-through type filter |
| CN109987678A (en) * | 2019-03-13 | 2019-07-09 | 佛山市云米电器科技有限公司 | A kind of integrated flushing type filter core and the filtration system with the filter core |
| CN110743221A (en) * | 2018-07-24 | 2020-02-04 | 康丽根水处理科技(上海)有限公司 | Front filter with high-pressure rotary backwashing and positive flushing functions |
-
2012
- 2012-07-12 CN CN 201220337041 patent/CN202724820U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104906855A (en) * | 2015-06-27 | 2015-09-16 | 许宏娜 | Front-mounted backwash filter |
| CN105502743A (en) * | 2015-12-29 | 2016-04-20 | 常州罗盘星检测科技有限公司 | Multiway filter |
| CN106237683A (en) * | 2016-08-23 | 2016-12-21 | 张萍 | A kind of defecator with efficient backwashing function for air water machine |
| CN106237683B (en) * | 2016-08-23 | 2019-02-15 | 九章膜(北京)科技有限公司 | A kind of filter device with efficient backwashing function for air water machine |
| CN107376475A (en) * | 2017-08-11 | 2017-11-24 | 安徽聚合自动化工程有限公司 | A kind of straight-through type filter |
| CN110743221A (en) * | 2018-07-24 | 2020-02-04 | 康丽根水处理科技(上海)有限公司 | Front filter with high-pressure rotary backwashing and positive flushing functions |
| CN109987678A (en) * | 2019-03-13 | 2019-07-09 | 佛山市云米电器科技有限公司 | A kind of integrated flushing type filter core and the filtration system with the filter core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171211 Address after: 361000 Fujian Province, Xiamen city Tongan Industrial Zone Siming Park No. 305 Patentee after: XIAMEN FILTERTECH INDUSTRIAL Corp. Address before: The North Industrial Zone of Jimei Tianfeng road Xiamen City, Fujian province 361021 No. 69 Patentee before: Xiamen Runner Industrial Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |