CN210278482U

CN210278482U - Countercurrent backflushing pipe based on prefilter

Info

Publication number: CN210278482U
Application number: CN201920395710.7U
Authority: CN
Inventors: 杨启敖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-04-10
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to a backflushing pipe against current based on leading filter, include: the flow dividing pipe is arranged at the water inlet of the counter-flow back flushing pipe and used for dividing the conveyed water; the backflushing pipe is connected with one end of the flow dividing pipe and is used for conveying water when the backflushing pipe performs backflushing; the collecting pipe is respectively connected with the shunt pipe and the backflushing pipe and is used for respectively receiving the water conveyed by the shunt pipe and the backflushing pipe and conveying the water to the pre-filter; and the connecting cover is connected with the collecting pipe and is used for being connected with a pre-filter. The utility model discloses install on leading filter, can only be through the switching state of switching valves in order to accomplish the switching of leading filter filtration and back flush two kinds of states, it is easy and simple to handle. Meanwhile, when the counter-flow back flushing pipe is used for back flushing, water flows into the filter element firstly, impurities attached to the outside of the filter screen are washed away through expansion, the impurities are mixed with the water and discharged, the cleaning speed is high, and the efficiency is high.

Description

Countercurrent backflushing pipe based on prefilter

Technical Field

The utility model relates to a domestic water purifies technical field, especially relates to a backflushing pipe against current based on leading filter.

Background

With the improvement of science and technology, people have higher requirements on water use and diet health in daily life. In urban water supply, the quality of domestic water is deteriorated and the control of water-using equipment is disabled due to secondary pollution such as rust, silt and the like in pipelines, and the service life of other domestic appliances related to water use is reduced, even great potential safety hazards are generated, so that a prefilter is required to be installed to improve the water quality and protect the domestic water-using equipment in a large environment. The pre-filter is a reliable impurity filtering device.

The pre-filter in the current market mainly comprises a forward flushing type, a back flushing type, a siphon flushing type and the like. However, different types of pre-filters suffer from different problems:

the washing intensity of the forward filter is weak, the filter element is easy to block, small impurities cannot be washed out, but the filter element is embedded deeper and tighter in the filter element, so that secondary pollution is easy to occur, a consumer needs to open the shell to take out the filter element to be brushed by using the toothbrush, and the time and the labor are wasted.

The siphon type prefilter product has a complex structure and is not thoroughly washed, if the water quality is poor, impurities are embedded in the filter element more deeply and tightly, and finally the filter element is blocked, so that secondary pollution is caused, and once the filter element is blocked, the maintenance is very difficult. On the other hand, most siphon prefilter products sacrifice filtration accuracy for flushing, typically above 50 microns.

Chinese patent publication No.: CN207532915U discloses a backwash pre-filter, which comprises an outer protection cover and a filter body arranged in the outer protection cover, wherein the outer protection cover is sequentially provided with a manual valve handle, a plastic protection cover, a first plastic sheath, an adjustable decorative ring, a second plastic sheath and an outer sewage discharge valve handle from top to bottom; the filter body comprises a valve body assembly, a transparent cup cover, a filter assembly and a sewage valve assembly; the valve body assembly comprises a valve main body and a main body valve core arranged in the valve main body; the manual valve handle is arranged at the top of the valve body assembly and is linked with the main valve core by rotating the manual valve handle, and is linked with the sewage discharge valve assembly by rotating the outer sewage discharge valve handle; the left side and the right side of the valve main body are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet respectively extend out of the outer protective cover; when the filter body is in a normal working state, the valve core of the main body inside the filter body is in a closed state, and when the valve core of the main body rotates by 180 degrees, the filter body is in a back flushing state. It can be seen that the backwash pre-filter has the following problems:

firstly, the backwashing pre-filter components are too many, and a great deal of time and energy are needed to be spent in installation, replacement and maintenance, so that the backwashing pre-filter components are inconvenient to use;

secondly, the preposed back flush filter uses a linkage assembly to switch modes, relates to a plurality of parts, and can have the condition of water leakage after being used for a long time, so that the filter element can not be washed, and meanwhile, the water can not be completely filtered when being filtered, and the purification efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a backflushing pipe against current based on leading filter for overcome the unable problem of simply and conveniently wasing the filter core fast among the prior art.

In order to achieve the above object, the present invention provides a reverse flow back flushing pipe based on a pre-filter, including:

the flow dividing pipe is arranged at the water inlet of the counter-flow back flushing pipe and used for dividing the conveyed water;

the backflushing pipe is connected with one end of the flow dividing pipe and is used for conveying water when the backflushing pipe performs backflushing;

the collecting pipe is respectively connected with the flow dividing pipe and the back flushing pipe and used for respectively receiving water conveyed by the flow dividing pipe and the back flushing pipe and conveying the water to the pre-filter, and a switching valve group is arranged on the collecting pipe and used for switching the water flow direction;

and the connecting cover is connected with the collecting pipe and is used for being connected with a pre-filter.

Furthermore, the shunt pipe is a T-shaped tee joint, and the left end of the shunt pipe is connected with the pipeline and used for receiving water output by the pipeline; the upper end of the flow dividing pipe is connected with the backflushing pipe and is used for delivering water when the backflushing pipe performs backflushing; the right end of the flow dividing pipe is connected with the collecting pipe and used for supplying water when the counter-flow back flushing pipe is used for filtering.

Further, the collecting pipe is a cross, and comprises:

the left end is connected with the shunt pipe and used for receiving the water output by the shunt pipe;

the upper end is connected with the back flushing pipe and used for receiving water output by the back flushing pipe;

a lower end connected to a strainer in a pre-filter for delivering water to the interior of the pre-filter;

and the right end is connected with the pipeline and used for outputting the water filtered in the pre-filter to the pipeline.

Further, a sealing structure is arranged between the left end and the lower end of the collecting pipe.

Further, the switching valve block includes:

the first valve is arranged at the left end of the collecting pipe and used for controlling the opening and closing of a pipeline at the left end of the collecting pipe;

and the second valve is arranged at the upper end of the collecting pipe and used for controlling the opening and closing of a pipeline at the upper end of the collecting pipe.

Furthermore, the connecting cover is arranged on the outer side of the lower end of the collecting pipe and connected with the collecting pipe, and threads are arranged on the inner wall of the connecting cover and used for being connected with a pre-filter.

Furthermore, the top of the connecting cover is connected with the left end and the right end of the collecting pipe, and a through hole is formed in the joint of the connecting cover and the left end of the collecting pipe, so that water output by the left end of the collecting pipe is conveyed to the interior of the pre-filter.

Furthermore, a filter screen is arranged in the pre-filter and connected with the collecting pipe, and the collecting pipe is used for conveying water into the filter screen when the counter-flow backwashing pipe performs backwashing.

Compared with the prior art, the beneficial effects of the utility model reside in that, the utility model discloses a pipeline to among the prefilter improves, makes its switching state that can only pass through the switching valves filter and the switching of back flush two kinds of states in order to accomplish the prefilter, and is easy and simple to handle. Meanwhile, when the counter-flow back flushing pipe is used for back flushing, water flows into the filter element firstly, impurities attached to the outside of the filter screen are washed away through expansion, the impurities are mixed with the water and discharged, the cleaning speed is high, and the efficiency is high.

Especially, the repacking part of backflushing pipe conduct leading filter against current based on leading filter can regard as the replacement piece of various conventional leading filters, replaces through the pipeline to leading filter, can make original filter have the back flush function, has practiced thrift the cost of changing leading filter.

Furthermore, the counter-flow back flushing pipe consists of a flow dividing pipe, a back flushing pipe and a collecting pipe, water is sent by selecting different pipelines to complete the filtration of water or the cleaning of the filter element, and the reduction of purification efficiency and cleaning efficiency caused by the residual impurities in the pipelines due to the use of the same pipeline is avoided.

Further, seal structure is adopted to collecting pipe left end and lower extreme, like this, when the unfiltered water gets into the collecting pipe through the collecting pipe left end in the pipeline, can not get into inside the filter screen through the collecting pipe lower extreme to prevent that the filter screen from can't carrying out filterable situation to water and taking place, thereby further improved the availability factor of backflushing pipe against the current.

Particularly, the left end of the collecting pipe is provided with a first valve, the upper end of the collecting pipe is provided with a second valve, the used pipeline can be controlled by switching the opening and closing states of the first valve and the second valve, the operation is simple and convenient, and the service efficiency of the countercurrent backflushing pipe is improved.

Particularly, the filter element in the pre-filter is connected with the lower end of the collecting pipe, so that impurities can be effectively removed from the surface of the filter element by water, the impurities are prevented from being brought into the filter screen under the flowing of the water, and the filtering efficiency and the cleaning efficiency of the counter-flow back-flushing pipe are improved.

Particularly, the collector pipe lower extreme is equipped with the connection lid, connect the lid with leading filter passes through threaded connection, and like this, the conveyer pipe just can be connected with leading filter is firm, can not lead to because the junction is unstable leading to leading filter leaks.

Drawings

FIG. 1 is a schematic structural view of a reverse flow back flushing pipe based on a pre-filter of the present invention;

fig. 2 is a schematic diagram of the connection between the reverse flow back flushing pipe based on the pre-filter and the pre-filter of the present invention.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be further described with reference to the following embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Please refer to fig. 1 or fig. 2, which is a schematic structural diagram of a backflow backflushing pipe based on a pre-filter according to the present invention, including a flow dividing pipe 1, a backflushing pipe 2, a collecting pipe 3, and a connecting cover 4. One end of the flow dividing pipe 1 is connected with the pipeline, and the other two ends of the flow dividing pipe are respectively connected with the backflushing pipe 2 and the collecting pipe 3, so that water in the pipeline is divided and flows to the backflushing pipe 2 or the collecting pipe 3 respectively. The collecting pipe 3 is respectively connected with the shunt pipe 1 and the backflushing pipe 2 and is used for respectively conveying water output by the shunt pipe 1 and the backflushing pipe 2 to a designated position. The connecting cover 4 is arranged on the collecting pipe 3 and is used for being connected with the pre-filter.

When the prepositioned filter filters the water in the pipeline, the water flows to the shunt pipe 1 from the pipeline and directly flows to the prepositioned filter through the collecting pipe 3, and after the filtering of the prepositioned filter is finished, the collecting pipe 3 can output the water back to the pipeline. When the front filter carries out the back flush to the inside filter screen, water flows to shunt tubes 1 from the pipeline, flows through and gets into the front filter in order to wash the filter screen behind recoil pipe 2 and the collector pipe 3 in proper order, washes the blowoff valve outflow that sewage after the completion can pass through the front filter bottom. It will be appreciated that the backwash pipe can replace the feed pipe of many conventional pre-filters, provided that it is sufficient that it can be connected to the pre-filter without water leakage.

Referring to fig. 1 or fig. 2, the shunt tube 1 is a T-shaped tee, and the upper end of the tee is connected to the back flushing tube 2, and the right end of the tee is connected to the collecting tube 3, so as to deliver water in the pipeline to one of the two pipelines. It is understood that the shunt tube 1 may be made of iron, copper, stainless steel or other kinds of metals or alloys, as long as the shunt tube 1 can achieve a specified strength, and of course, the shunt tube 1 may be connected to the back-flushing tube 2 and the collecting tube 3 by welding, integrally connecting or other kinds of connection methods, as long as the shunt tube 1 can be stably connected to the back-flushing tube 2 and the collecting tube 3.

Referring to fig. 1 or fig. 2, the back flushing pipe 2 is a C-shaped metal pipe, an inlet of which is disposed at the upper end of the shunt pipe 1, and an outlet of which is disposed at the upper end of the collecting pipe 3, for delivering the water output from the shunt pipe 1 to the collecting pipe 3. When the pre-filter performs back washing on the filter screen, the flow dividing pipe 1 conveys water to the back washing pipe 2, the back washing pipe 2 conveys water to the collecting pipe 3, and the collecting pipe 3 conveys water to the interior of the filter screen of the pre-filter so as to clean the filter screen. It will be appreciated that the material of the recoil pipe 2 may be iron, copper, stainless steel or other kinds of metals or alloys as long as the recoil pipe 2 can achieve a given strength.

Referring to fig. 1 or fig. 2, the collecting pipe 3 is a cross-shaped four-way pipe for conveying the water output from the shunt pipe 1 and the back flushing pipe 2 to the pre-filter. The left end of the collecting pipe 3 is connected with the flow dividing pipe 1, the upper end of the collecting pipe 3 is connected with the backflushing pipe 2, the lower end of the collecting pipe 3 is connected with the pre-filter, and the right end of the collecting pipe 3 is connected with the pipeline. Be equipped with airtight space between the left end of collecting pipe 3 and the lower extreme, and seted up the through-hole in the bottom of left end pipeline for export the water of collecting pipe 3 left end to leading filter. When the prefilter filters pipeline normal water, the collector pipe 3 can receive the water of shunt tubes 1 output from the left end and carry water to the filter screen outside among the prefilter, and water flows out to the filter screen in order to accomplish and filters in from the filter screen, and collector pipe 3 can use right-hand member pipeline will filter back water output to the pipeline in. When the pre-filter carries out the back flush to the filter screen, collecting pipe 3 can be followed the upper end and received the water of 2 outputs of backflushing pipe and pass through the lower extreme with water and carry to the filter screen inside, wash the filter screen through the inflation of the inside water of filter screen to wash the adnexed impurity in filter screen surface down, back flush completion back, the sewage that contains impurity can be discharged from pre-filter bottom. It is understood that the material of the collecting pipe 3 may be iron, copper, stainless steel or other kinds of metals or alloys as long as the collecting pipe 3 can achieve a specified strength, and of course, the connecting manner of the collecting pipe 3 and other components may be welding, integral connection or other kinds of connecting manners as long as the collecting pipe 3 and other components can be stably connected.

Specifically, a switching valve group is arranged on the collecting pipe 3 and comprises a first valve 31 and a second valve 32. Wherein, the first valve 31 is arranged at the left end pipeline of the collecting pipe 3 and used for controlling the opening and closing of the left end pipeline of the collecting pipe 3. The second valve 32 is disposed in the upper end pipeline of the collecting pipe 3, and is used for controlling the opening and closing of the upper end pipeline of the collecting pipe 3. When the first valve 31 is opened and the second valve 32 is closed, water enters the left end of the collecting pipe 3 from the right end of the collecting pipe after passing through the shunt pipe 1 and enters the outside of a pre-filter screen through a through hole; when the first valve 31 is closed and the second valve 32 is opened, water enters the backflushing pipe 2 from the upper end of the shunt pipe 1, is conveyed to the upper end of the collecting pipe 3 from the backflushing pipe 2, enters the interior of the pre-filter screen from the lower end of the collecting pipe 3, and is output after being filtered. It is understood that the valve types of the first valve 31 and the second valve 32 are not particularly limited in this embodiment, as long as the first valve 31 can control the opening and closing of the left end pipeline of the collecting pipe 3, and the second valve 32 can control the opening and closing of the upper end pipeline of the collecting pipe 3.

Referring to fig. 1 or fig. 2, the connection cap 4 is a cylindrical housing, which is disposed below the manifold 3 and is fixedly connected to the manifold 3, and covers the left end, the right end, and the lower end of the manifold 3 for connecting to the pre-filter, and the connection cap 4 has an inner thread on an inner wall for connecting to the pre-filter. When the backflow backflushing pipe based on the pre-filter is installed, the conveying pipeline on the pre-filter is unscrewed and is rotatably connected into the connecting cover 4. It can be understood that the connection cover 4 and the collecting pipe 3 may be mechanically engaged, integrally connected or connected in other types, as long as the connection cover 4 can be stably connected to the collecting pipe 3. Of course, the material of the connection cover 4 is not particularly limited in this embodiment, as long as the connection cover 4 can be stably connected with the pre-filter.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-filter based reverse flow back-flush tube, comprising:

the collecting pipe is a four-way pipe, is respectively connected with the flow dividing pipe and the back flushing pipe and is used for respectively receiving the water conveyed by the flow dividing pipe and the back flushing pipe and conveying the water to the pre-filter, and a switching valve group is arranged on the collecting pipe and is used for switching the water flow direction; the collecting pipe comprises four ports, namely a left end, an upper end, a lower end and a right end, a closed space is arranged between the left end and the lower end, and a through hole is formed in the bottom of the left end pipeline;

2. The pre-filter based reverse flow back-flushing pipe as claimed in claim 1, wherein the shunt tube is a T-tee with a left end connected to the pipe for receiving water from the pipe; the upper end of the flow dividing pipe is connected with the backflushing pipe and is used for delivering water when the backflushing pipe performs backflushing; the right end of the flow dividing pipe is connected with the collecting pipe and used for supplying water when the counter-flow back flushing pipe is used for filtering.

3. The pre-filter based reverse flow back-flushing pipe as claimed in claim 1, wherein the left end of the collecting pipe is connected with the shunt pipe for receiving the water output by the shunt pipe;

the upper end of the back flushing pipe is connected with the back flushing pipe and is used for receiving water output by the back flushing pipe;

the lower end of the water pipe is connected with a filter screen in the pre-filter and used for conveying water to the interior of the pre-filter;

the right end is connected with the pipeline and used for outputting the water filtered in the pre-filter to the pipeline.

4. The pre-filter based reverse flow backwash pipe as claimed in claim 3 wherein there is a seal between the left and lower ends of the manifold.

5. The pre-filter based reverse flow back-flush tube of claim 3, wherein the switching valve set comprises:

6. The pre-filter based reverse flow back-flush pipe according to claim 1, wherein the connection cap is disposed outside the lower end of the manifold and connected to the manifold, and a screw thread is provided on an inner wall of the connection cap for connecting to the pre-filter.

7. The pre-filter based reverse flow back-flushing pipe as claimed in claim 6, wherein the top of the connection cap is connected to the left end and the right end of the collecting pipe, and a through hole is formed at the connection position of the connection cap and the left end of the collecting pipe for delivering the water output from the left end of the collecting pipe to the interior of the pre-filter.

8. The pre-filter based backwash pipe as claimed in claim 1, wherein a screen is provided inside the pre-filter, the screen being connected to the manifold for allowing the manifold to deliver water to the inside of the screen during backwash of the backwash pipe.