CN210114888U

CN210114888U - Back flush filter

Info

Publication number: CN210114888U
Application number: CN201920392629.3U
Authority: CN
Inventors: 杨启敖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-02-28
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to a back flush filter, it passes through rotary filter in order to reach the switching to the interior rivers direction of filter, include: the connecting pipe is arranged in the pipeline and used for conveying water in the pipeline; the filter is connected with the connecting pipe and used for filtering water conveyed by the connecting pipe, the filter is internally provided with a switching pipe, and the switching between the filtering and the cleaning in the filter is completed by adjusting the direction of the switching pipe. The backwashing filter enables water in the pipeline to flow through different pipelines through the rotary filter, so that the water passes through the filter element from different directions to complete the switching of two working modes of filtering and cleaning.

Description

Back flush filter

Technical Field

The utility model relates to a domestic water purifies technical field, especially relates to a back flush 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. As in the Chinese patent: the prefilter technology disclosed in 201520252203.X (application number) is a typical siphon type prefilter.

In view of the problems with the various types of pre-filters described above and the desire for pre-filters of better function and quality, there is a need for improvements to the pre-filters of today.

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 back flush filter for overcome prior art can't wash the problem of filter core fast portably.

In order to achieve the above object, the present invention provides a backwash filter, which is switched in order to reach the water flow direction in the filter by a rotary filter, comprising:

the connecting pipe is arranged in the pipeline and used for conveying water in the pipeline;

the filter is connected with the connecting pipe and used for filtering water conveyed by the connecting pipe, the filter is internally provided with a switching pipe, and the switching between the filtering and the cleaning in the filter is completed by adjusting the direction of the switching pipe.

Further, the connection pipe includes:

the switching pipe is arranged above the filter and is movably connected with the filter, so that the filter can horizontally rotate, and pipelines are respectively arranged on two sides of the switching pipe;

the water inlet pipe is arranged on the switching pipe, is connected with an opened pipeline and is used for outputting water in the pipeline into the filter;

and the water outlet pipe is arranged on the switching pipe, is connected with another opened pipeline and is used for outputting the water filtered by the filter.

Furthermore, a check valve is further arranged in a pipeline of the switching pipe connected with the water inlet pipe and used for preventing water in the filter from flowing back.

Furthermore, the side wall of the check valve is provided with at least two sealing rings for sealing the pipeline.

Furthermore, the joints of the water inlet pipe and the water outlet pipe with the switching pipe are provided with gaskets for sealing the joints.

Further, the filter includes:

a connection cover disposed above the filter and connected to the connection pipe to fix the filter at a designated position;

the bottle body is arranged below the connecting cover, is connected with the connecting cover and is used for loading water conveyed by the connecting pipe;

the filter screen is arranged inside the bottle body and is used for filtering water in the bottle body;

the pollution discharge sealing piece is arranged at the bottom end of the bottle body, is connected with the bottle body and is used for sealing the bottle body;

and the blow-down valve is arranged at the bottom end of the bottle body, is connected with the blow-down sealing piece and is used for discharging impurities in the filter.

Further, the connection lid is a cylinder metal, and two pipelines have been seted up to its inside, include:

the first pipeline is an L-shaped pipe, one side of the first pipeline is arranged on the side surface of the connecting cover, and the other side of the first pipeline is arranged on the bottom surface of the connecting pipe and is used for conveying water in the pipeline to the inside of the filter screen;

the second pipeline is a straight pipe and is arranged on the side face of the connecting cover and used for conveying water in the pipeline to the outside of the filter screen.

Furthermore, the joint of the connecting cover and the connecting pipe is provided with at least two sealing rings, and the joint of the connecting cover and the bottle body is provided with at least two sealing rings.

Furthermore, the junction of the bottle body and the connecting cover is provided with at least two sealing rings, and the junction of the bottle body and the pollution discharge sealing element is provided with at least two sealing rings.

Further, the junction of blowdown valve with blowdown sealing member is equipped with at least one sealing washer.

Compared with the prior art, the beneficial effects of the utility model reside in that, back flush filter makes pipeline normal water flow through different pipelines through rotary filter to make water pass the filter core from different directions, with the completion to filtering and the switching of wasing two kinds of working methods, simple structure, convenient operation during the switching mode, the cleaning efficiency is high.

Furthermore, a water inlet pipe and a water outlet pipe are further arranged in the connecting pipe, the water inlet pipe is used for inputting water, the water outlet pipe is used for outputting water, and meanwhile, the switching pipe is rotated to complete the flowing direction of water in the filter, so that the working state of the filter is switched, and the service efficiency of the backwashing filter is improved.

Particularly, the switching pipe is also provided with a check valve, so that water does not flow back when flowing through the switching pipe, the backwashing filter can continuously work, and the service efficiency of the backwashing filter is further improved.

In particular, the side wall of the check valve is provided with a sealing ring, so that when the check valve is closed, water cannot permeate back into the input pipe through the side wall of the check valve, thereby improving the sealing performance in the connecting pipe.

Furthermore, gaskets are arranged at the joints of the water inlet pipe, the water outlet pipe and the switching pipe, so that the sealing performance in a pipeline is guaranteed, meanwhile, the damage caused by mutual friction between connecting pieces can be prevented, and the service life of the backwashing filter is prolonged.

Furthermore, the filter is internally provided with the connecting cover which is connected with the connecting pipe, so that when the backwashing filter is used, the working state of the filter can be switched only by rotating the connecting cover, the operation is simple, and the service efficiency of the backwashing filter is improved.

Particularly, the first pipeline and the second pipeline are arranged in the connecting cover, when the filter is rotated, the switching of the water flow direction in the filter can be achieved by aligning the first pipeline with the second pipeline and the corresponding pipeline in the connecting pipe, and the practical efficiency of the backwashing filter is further improved.

Furthermore, at least two sealing rings are arranged at the joint of the connecting cover and the connecting pipe, and at least two sealing rings are arranged at the joint of the connecting cover and the bottle body; the connecting part of the bottle body and the connecting cover is provided with at least two sealing rings, and the connecting part of the bottle body and the pollution discharge sealing element is provided with at least two sealing rings; further, the junction of blowdown valve with blowdown sealing member is equipped with at least one sealing washer. By arranging the sealing rings at the connecting parts, the condition of leakage in the backwashing filter can be effectively prevented, and the service life of the backwashing filter is further prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the backwash 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.

The above and further features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

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.

Fig. 1 is a schematic structural diagram of a backwash pre-filter according to the present invention, which includes a connecting pipe 1 and a filter 2. The connecting pipe 1 is arranged in a pipeline and used for conveying water in the pipeline; the filter 2 is arranged below the connecting pipe 1 and connected with the connecting pipe for filtering water in the pipeline. When the backwashing filter is filled with water, the water flows through the connecting pipe 1, the connecting pipe 1 outputs the water to the filter 2, the filter 2 outputs the water back to the connecting pipe 1 after filtering, and the connecting pipe 1 outputs the filtered water to a pipeline. It will be appreciated by those skilled in the art that the backflushing filter can be used in domestic pipelines as well as in pipelines in other locations, as long as the backflushing filter is able to reach its designated operating state.

Referring to fig. 1, the connection pipe 1 of the present invention includes a switching pipe 11, a water inlet pipe 12, a water outlet pipe 13 and a check valve 14. Wherein the switching tube 11 is arranged above the filter 2 for delivering water to the filter 2; the water inlet pipe 12 is arranged on the right side of the switching pipe 11 and used for outputting water to the switching pipe 11; the outlet pipe 13 is arranged on the left side of the switching pipe 11 and used for outputting the filtered water of the filter 2 to the pipeline, and the check valve 14 is arranged between the switching pipe 11 and the water inlet pipe 12 and used for preventing the water in the pipeline from flowing back. Connecting pipe 1 is when leading to water, and inlet tube 12 is flowed through to water, and inlet tube 12 exports water to switch tube 11, and switch tube 11 can carry water extremely filter 2, filter 2 filters water back and exports water to switch tube 11, and switch tube carries water to outlet pipe 13 again, and outlet pipe 13 exports water to the pipeline after will filtering in to accomplish the transport to water, and in transportation process, check valve 14 can control rivers direction in the pipeline, flows in order to prevent the pipeline normal water backward flow through making water along the specified direction.

Specifically, the switching tube 11 is a cylindrical tube with a groove at the bottom end, the switching tube 11 is connected to the top end of the filter 2, and pipes are respectively disposed at the left and right sides of the switching tube for connecting to the water inlet pipe 12 and the water outlet pipe 13. When the switching pipe 11 is delivering water, it receives the water delivered from the water inlet pipe 11 and delivers it to the filter 2, and after the filter 2 finishes filtering, receives the filtered water and delivers it to the pipeline. It is understood that the material of the switching tube 11 may be iron, nickel, stainless steel or other kinds of metals or alloys, and the embodiment is not particularly limited as long as the switching tube 11 can achieve a specified strength.

Specifically, the inlet tube 12 is a metal pipeline with threads on the inner wall, and is disposed at the right end of the switching tube 11 and connected to the pipeline to output water in the pipeline to the switching tube 11, and a gasket is disposed at the joint of the inlet tube 12 and the switching tube 11 to prevent the two from damaging each other and ensure the sealing performance of the joint. When the backwash filter is in operation, the water inlet pipe 12 delivers water to the switching pipe 11 and to the filter 2 through the switching pipe. It is understood that the material of the inlet pipe 12 may be iron, nickel, stainless steel or other kinds of metals or alloys, and the embodiment is not particularly limited as long as the inlet pipe 12 can achieve a specified strength.

Specifically, the water outlet pipe 13 is a metal pipe with threads on the inner wall, and is disposed at the left end of the switching pipe 11 and connected to the pipe for outputting the water in the switching pipe 11 to the pipe, and a gasket is disposed at the joint of the water outlet pipe 13 and the switching pipe 11 for preventing the two from damaging each other and ensuring the sealing performance of the joint. When the backwashing filter is in operation, the water outlet pipe 13 conveys water output from the switching pipe 11 into the pipeline. It is understood that the material of the water outlet pipe 13 may be iron, nickel, stainless steel, or other kinds of metals or alloys, and this embodiment is not particularly limited as long as the water outlet pipe 13 can achieve the specified strength.

Particularly, the check valve 14 sets up switching tube 11 with in the pipeline that inlet tube 12 links to each other for prevent the water backward flow in the pipeline, be equipped with the sealing washer on the check valve lateral wall, be used for guaranteeing the leakproofness in the pipeline in order to improve the non return efficiency of check valve 14. When the connection pipe 1 is supplied with water, the check valve is opened and allows water in the water inlet pipe 12 to flow into the switching pipe 11, and when the water in the switching pipe 11 flows backward, the check valve 14 is closed, thereby preventing the water from flowing backward in the pipe. It is understood that the type of the check valve 14 is not particularly limited in this embodiment, as long as the check valve 14 can achieve its designated operating state.

Referring to fig. 1, the filter 2 of the present invention is disposed below the connection pipe 1 and connected thereto for filtering water output from the connection pipe 1, and includes a connection cover 21, a bottle 22, a filter screen 23, a drainage sealing member 24 and a drainage valve 25. Wherein the connection cover 21 is disposed on the top of the filter 2 and connected to the connection pipe 1 for delivering the water in the connection pipe 1 to the inside of the filter 2; the bottle body 22 is arranged below the connecting pipe 1 and is used for storing water output by the connecting pipe 1; the filter screen 23 is arranged inside the bottle body 22 and is used for filtering impurities such as silt in water; the drain sealing member 24 is disposed below the strainer 23 and connected to the bottle body 22 and the strainer 23, respectively, to seal the junction of the bottle body 22 and the strainer 23 to prevent impurities from leaking out; the drain valve 25 is disposed below the bottle body 22 to discharge the impurities filtered in the filter 2.

When water is filtered, after the water flows through the connecting pipe 1, the water is output to the filter 2 and flows into the filter screen 23, after the water is expanded and filtered in the filter screen 23, the water enters the outside of the filter screen 23 and is output to the connecting pipe 1 to complete the filtering, and after a specified amount of impurities are accumulated in the filter screen 23, the impurities in the filter screen 23 can be discharged by opening the blow-down valve 25. When the filter mesh 23 is washed, water flows through the connection pipe 1, is output to the filter 2 and flows outside the filter mesh 23, and after the filter mesh 23 is washed, the water enters the inside of the filter mesh 23 and is output to the connection pipe 1 to complete washing. It is understood that the connection mode of the filter 2 and the connection pipe 1 may be a threaded connection, a mechanical fit or other connection modes, as long as the filter 2 can be stably connected with the connection pipe 1.

Specifically, the connection cap 21 is a metal cylinder, which is disposed inside the switching tube 11 and can rotate horizontally, so as to deliver the water output from the water inlet tube 12 to the inside of the bottle 22 and output the filtered water to the switching tube 11. An L-shaped first pipeline and a linear second pipeline are arranged in the connecting cover; one end of the first pipeline is connected with the pipeline of the switching pipe 11 close to the water inlet pipe 12, and the other end of the first pipeline is connected with the top end of the filter screen 23, so that water in the water inlet pipe 12 is conveyed into the filter screen 23; one end of the second pipeline is connected with the pipeline of the switching pipe 11 close to the water outlet pipe 13, and the other end of the second pipeline is connected with the top end of the bottle body 12, so as to output the filtered water to the water storage tank 13.

When the backwashing filter is used for filtering, water flows into the first pipeline through the water inlet pipe 12 and enters the inside of the filter screen 23, and after being filtered by the filter screen 23, the water enters the outside of the filter screen 23 and is output to a pipeline through the water outlet pipe 13; when the backwashing filter filters, the connecting cover 21 rotates 180 degrees, after the rotation is completed, the first pipeline is connected with the water outlet pipe 13, the second pipeline is connected with the water inlet pipe 12, at the moment, water is conveyed to the second pipeline through the water inlet pipe 12, enters the bottle body 22 and is positioned outside the filter screen 23, impurities attached to the surface of the filter screen 23 are washed away by flowing to the inside of the filter screen 23, and the washed sewage is conveyed to the water outlet pipe 13 through the first pipeline and is output to a pipeline. It is understood that the material of the connection cover 21 may be iron, nickel, stainless steel or other kinds of metals or alloys, and the embodiment is not particularly limited as long as the connection cover 21 can achieve a specified strength.

Specifically, the bottle body 22 is a cylinder, a water inlet is formed at the top end of the cylinder for receiving water output from the connection cover 21, at least two sealing rings are formed at the connection position of the top end of the bottle body 22 for ensuring the sealing performance between the bottle body 22 and the connection cover 21, and an outlet is formed at the bottom end of the cylinder for connecting with the drainage sealing member 24. When water enters the filter 2, the bottle body 22 stores the water. It is understood that the material of the bottle 22 may be polyethylene, polypropylene, stainless steel or other materials, as long as the bottle 22 can contain the water output from the connection tube 1.

Specifically, the filter screen 23 is a ring-shaped screen, which is disposed inside the bottle body 22, and has an upper end connected to the first pipe and a lower end connected to the drain sealing member 24, so as to filter impurities in water. When water passes through the screen 23, insoluble particles therein are trapped, thereby purifying the water. It is understood that the kind of the filter screen 23 is not particularly limited in this embodiment, as long as the filter screen 23 can filter the impurities in the water.

Specifically, the drainage sealing member 24 is disposed at the bottom of the filter screen 23 and connected to the bottle 22 for sealing the bottle 22 and the filter screen 23, and at least two sealing rings are disposed on a side wall of the drainage sealing member 23 for ensuring the sealing performance between the drainage sealing member 24 and the bottle 22. After water enters the inside of the filter screen 23, the drainage sealing member seals the filter screen 23, so that sewage can only flow to the outside of the filter screen through the filter screen 23, thereby ensuring the filtering efficiency of the filter screen 23. It will be understood that the connection manner of the drainage seal 24 and the filter screen 23 may be mechanical fit, welding, integral connection or other connection manners, as long as the drainage seal 24 can be tightly connected to the bottom of the filter screen 23.

Specifically, the blowoff valve 25 is a valve, which is disposed at the bottom of the bottle 22 and is in threaded connection with the drainage sealing member 24 for discharging the impurities in the filter screen 23 out of the filter 2, and at least one sealing ring is disposed on the outer wall of the blowoff valve 25 for ensuring the sealing performance between the blowoff valve 25 and the drainage sealing member 24. The impurities filtered by the filter 2 can be deposited at the bottom of the filter screen 23, and after a certain amount of impurities are deposited, the impurities can be discharged by opening the drain valve 25; a snap spring 251 is further arranged at the joint of the drain valve 25 and the drain sealing member 24, so that the drain valve 25 is tightly connected with the drain sealing member 24. It will be appreciated that the connection between the waste valve 25 and the drain seal 24 may be a threaded connection, an integral connection, or other types of connections, as long as the waste valve 25 is securely connected to the drain seal 24 at a predetermined position.

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 backflush filter for effecting a change in direction of water flow through the filter by rotating the filter, comprising:

2. The backflushing filter according to claim 1 wherein said connecting tube includes:

3. The backwash filter as claimed in claim 2, wherein a check valve is further provided in a pipe connecting the switching pipe and the water inlet pipe to prevent water in the filter from flowing back.

4. The backflush filter of claim 3, wherein the side wall of the check valve is provided with at least two sealing rings for sealing the pipeline.

5. The backwash filter as in claim 2, wherein the connection between the water inlet pipe and the water outlet pipe and the switching pipe is provided with a gasket for sealing the connection.

6. The backflush filter of claim 1, wherein the filter comprises:

7. The backflushing filter according to claim 6 wherein said connection cover is a cylindrical metal having two conduits formed therein, including:

8. The backflushing filter according to claim 7, wherein the connection between the connection cover and the connection pipe is provided with at least two sealing rings, and the connection between the connection cover and the bottle body is provided with at least two sealing rings.

9. The backflushing filter according to claim 6 wherein the junction of the bottle body and the connecting cap is provided with at least two sealing rings and the junction of the bottle body and the drain seal is provided with at least two sealing rings.

10. The backflushing filter according to claim 6 wherein the connection of said drain valve and said drain seal is provided with at least one sealing ring.