CN210728814U - Reverse back flush purifier - Google Patents

Abstract

The utility model discloses a reverse back flush purifier relates to back flush technical field, including box, rivers switching-over valve, blowoff valve and drain valve, wherein: the box body is internally provided with a filter screen which divides the box body into a first box body and a second box body; the water flow reversing valve is communicated with the first box body and the second box body, and water can selectively flow into the first box body or the second box body by switching the water flow reversing valve; the drain valve is communicated with the first box body and is used for controlling the discharge of sewage after the filter screen is washed; and the drain valve is communicated with the second box body and used for controlling the discharge of the purified water obtained after the purified water is filtered by the filter screen. The utility model provides a reverse back flush purifier can enough carry clean water, can make impurity wash more completely again, has avoided the impurity that traditional back flush purifier brought to remain the problem that causes blocking phenomenon.

Description

A reverse backwash water purification device

technical field

The utility model relates to the technical field of backwashing devices, in particular to a reverse backwashing water purification device.

Background technique

The working principle of the traditional backwash filter is: when the filter belongs to the "internal pressure type" under normal working conditions, the tap water can penetrate from the inner wall of the filter screen to the outer wall with its own pressure, and particulate impurities such as sediment and rust can be eliminated. It is trapped in the pipe; during cleaning, the flushing valve is opened to let the impurities trapped by the filter screen be washed away by water. During the cleaning process, the backwash filter device only flushes the impurities from the inside of the filter screen, and some impurities may still be attached to the filter screen. , there is a phenomenon of unclean washing. If the water quality is poor or the user does not rinse for a long time, the impurities will be embedded in the inner surface of the filter element and cannot be washed away, which will eventually cause blockage during water purification.

Utility model content

The purpose of the utility model is to provide a reverse backwash water purification device, which can not only purify the liquid, but also make the impurities flush more completely, and the flushing efficiency is high.

To achieve the above object, the utility model adopts the following technical solutions:

A reverse backwashing water purification device, comprising a box body, a water flow reversing valve, a drain valve and a drain valve, wherein: the box body is provided with a filter screen inside, and the filter screen divides the box body into a first box body and a second box body. Two tanks; a water flow reversing valve, which communicates with the first tank and the second tank, and can selectively make water flow into the first tank or the second tank by switching the water flow reversing valve; a drain valve, which It is connected to the first box body, and is used to control the discharge of sewage after washing the filter screen; the drain valve is connected to the second box body, and is used to control the discharge of purified water obtained after being filtered by the filter screen.

Further, the filter screen is arranged in the box body to divide the box body into upper and lower parts, the first box body is the upper part of the box body, and the second box body is the lower part of the box body.

Further, the water flow reversing valve is connected to the upper end of the first box body.

Further, the reverse backwash water purification device further includes a drainage conduit, the drainage conduit is located outside the box body, one end of the drainage conduit is connected to the water flow reversing valve, and the other end is connected to the left side of the second box body.

Further, the blowdown valve is located on the right side of the first box body.

Further, the drain valve is located on the right side of the second box body.

Further, the box body is cylindrical.

Further, the filter screen is a stainless steel filter screen.

Further, the front end of the water flow reversing valve is provided with a liquid inlet.

Compared with the prior art, the utility model has the following advantages:

When the reverse backwash water purification device provided by the utility model is used to purify water, the impurities are attached to the inner side of the filter screen; when the filter screen needs to be washed, the water flow from the outside of the filter screen under the action of pressure difference rushes to the inner side of the filter screen, and washes away impurities. The reverse backwash water purification device provided by the utility model can not only transport clean water, but also wash the impurities more completely, avoiding the problem of clogging caused by the residual impurities caused by the traditional reverse washing water purification device. It has the advantages of simple manufacture, good filtering effect and high flushing efficiency.

Description of drawings

FIG. 1 is a schematic diagram of a reverse backwash water purification device according to an embodiment of the present invention.

Detailed ways

To further illustrate the various embodiments, the present invention provides accompanying drawings. Components in the figures are not drawn to scale, and similar component symbols are often used to represent similar components.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or position The relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be construed as a limitation of the present invention. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, or two. Connectivity within an element or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figure 1, a reverse backwash water purification device includes a box body, a water flow reversing valve 3, a drain valve 1 and a drain valve 2, wherein: the box body is provided with a filter screen 6 inside, the filter screen 6 The box body is divided into a first box body 4 and a second box body 5; the water flow reversing valve 3, which is communicated with the first box body 4 and the second box body 5, can be selectively made by switching the water flow reversing valve 3. The water flows into the first box 4 or the second box 5; the drain valve 1, which is connected to the first box 4, is used to control the discharge of sewage after washing the filter screen 6; the drain valve 2, which is connected to the second box 5. It is used to control the discharge of purified water obtained after being filtered by the filter screen 6.

Preferably, the filter screen 6 is arranged in the box body to divide the box body into upper and lower parts, the first box body 4 is the upper part of the box body, the second box body 5 is the lower part of the box body, as the first box body The screen surface of the bottom wall of 4 is called the inside of the screen, and the screen surface of the top wall of the second box 5 is called the outside of the screen. Preferably, the box body is cylindrical, and the box body is made of metal material, more preferably stainless steel. In this embodiment, the filter screen 6 is preferably a stainless steel filter screen, and the stainless steel filter screen can be fixed inside the box body by welding, screw connection, snap connection, or the like.

In a specific structure, the water flow reversing valve 3 is connected to the upper end of the first box 4 through a pipeline, and the front end of the water flow reversing valve 3 is provided with a liquid inlet. Preferably, the reverse backwash water purification device further includes a drainage conduit 7 located outside the box body, one end of the drainage conduit 7 is connected to the water flow reversing valve 3 and the other end is connected to the left side of the second box body 5 . Preferably, the drain valve 1 is located on the right side of the first tank 4 , and the drain valve 2 is located on the right side of the second tank 5 .

The use principle of the reverse backwash water purification device provided by this embodiment is as follows:

When it is necessary to obtain clean water, close the drain valve 1, the tap water flows from the liquid inlet to the water flow reversing valve 3, turn the water flow reversing valve 3, and introduce the tap water into the upper part of the water purification device, that is, the first box 4 , the tap water entering the first tank 4 due to its own gravity and "internal pressure" causes the water to seep down the filter screen 6 , thereby obtaining purified water in the second tank 5 . The drain valve 2 is opened so that purified water flows out of the water purification device to provide purified water to the user.

When it is necessary to flush the filter screen 6, close the drain valve 2, and the tap water still flows into the water flow reversing valve 3 from the liquid inlet. At this time, the water flow reversing valve 3 is turned to introduce the tap water into the drainage conduit 7, and the water flows through the drainage conduit 7. It flows to the lower half of the water purification device, that is, the second box 5. The tap water in the second box 5 flushes the filter 6 from the outside of the filter to the inside of the filter through the action of pressure, and removes the impurity layer on the filter 6. Rinse well. Open the drain valve 1, and discharge the washed impurities out of the device.

The reverse backwash water purification device provided by the utility model has the functions of directly intercepting impurities in water, removing suspended solids and particulate matter in water bodies, reducing turbidity, purifying water quality, etc. It solves the problem of blockage caused by the residual impurities caused by the traditional reverse flushing water purification device.

Although the present invention has been specifically shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Various changes are made to the present utility model, which are all within the protection scope of the present utility model.

Claims (9)

1. The utility model provides a reverse back flush purifier which characterized in that: including box, rivers switching-over valve, blowoff valve and drain valve, wherein:

the box body is internally provided with a filter screen which divides the box body into a first box body and a second box body;

a water flow reversing valve which is communicated with the first box body and the second box body and can selectively make water flow into the first box body or the second box body by switching the water flow reversing valve;

the drain valve is communicated with the first box body and is used for controlling the discharge of sewage after the filter screen is washed;

and the drain valve is communicated with the second box body and used for controlling the discharge of the purified water obtained after the purified water is filtered by the filter screen.

2. The reverse backwashing water purification apparatus of claim 1, wherein: the filter screen sets up in the box in order to divide into two parts about the box, and first box is the upper portion of box, and the second box is the lower part of box.

3. A reverse backwash water purification apparatus as claimed in claim 2, wherein: the water flow reversing valve is connected to the upper end of the first box body.

4. A reverse backwash water purification apparatus as claimed in claim 3, wherein: the reverse backwashing water purification device further comprises a drainage guide pipe, the drainage guide pipe is positioned outside the box body, one end of the drainage guide pipe is connected with the water flow reversing valve, and the other end of the drainage guide pipe is connected to the left side of the second box body.

5. A reverse backwash water purification apparatus as claimed in claim 2, wherein: the blowdown valve is positioned on the right side of the first box body.

6. A reverse backwash water purification apparatus as claimed in claim 2, wherein: the drain valve is located the second box right side.

7. The reverse backwashing water purification apparatus of claim 1, wherein: the box body is cylindrical.

8. The reverse backwashing water purification apparatus of claim 1, wherein: the filter screen is a stainless steel filter screen.

9. The reverse backwashing water purification apparatus of claim 1, wherein: the front end of the water flow reversing valve is provided with a liquid inlet.

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