New-type backwash filter water purifier

Abstract

Disclosed in the present invention is a new-type backwash filter water purifier, comprising a container, a filter element and a valve body, wherein the container comprises a main body bottle and a main body cover, the main body cover having a water intake channel, a water output channel and a waste discharge channel, the water output channel being in communication with the inner cavity of the main body bottle; the filter element is vertically arranged in the container, and a raw water channel is provided in the filter element; the valve body is rotatably arranged on the main body cover, a first communication port and a second communication port are formed outside the valve body, and the first communication port is in communication with the second communication port via an internal water cavity of the valve body; and when the valve body is turned to a filtering state, the water intake channel is in communication with the first communication port, and the second communication port is in communication with the raw water channel, and when the valve body is turned to a backwashing state, the raw water channel is in communication with the second communication port, and the first communication port is in communication with the waste discharge channel. This configuration effectively improves the filtering effect and flushing effect and prolongs the service life of the filter element, and the backwash filter water purifier has a simple structure and a low failure rate, is convenient for maintenance and easy to manufacture, and has a low cost.

Description

A new type of backwash filter water purifier Technical Field

[0001] The present invention relates to the technical field of domestic water filtering equipment, in particular to a novel backwash filtering water purifier. Background Art

[0002] At present, although whole-house water purification has entered thousands of households, it still faces many difficult problems. Technical issues

[0003] For example, the water quality in some areas is very poor, with impurities such as flocculent gel, mud, and bacteria. A 40-micron stainless steel mesh pre-filter cannot intercept these impurities. Although filters using rolled filter materials such as PP cotton have greatly improved interception capabilities, they will soon be blocked by impurities and affect water pressure. Moreover, the intercepted impurities cannot be discharged from the filter bottle, posing a risk of secondary pollution. In addition, the filter material needs to be replaced frequently, which not only increases the cost of use, but also wastes human resources and has poor results. Technical Solutions

[0004] The object of the present invention is to provide a novel backwash filter water purifier, aiming to solve at least one of the technical problems existing in the prior art.

[0005] In order to achieve the above objectives, the technical solution of the present invention provides a new backwash filter water purifier, comprising:

[0006] A container comprising a main body bottle and a main body cover, wherein the main body cover has a water inlet channel, a water outlet channel and a sewage discharge channel, and the water outlet channel is connected to the inner cavity of the main body bottle;

[0007] A filter material is vertically arranged in the container and is provided with a raw water channel; and

[0008] a valve body, the valve body being rotatably disposed on the main body cover, the valve body being provided with a first communication port and a second communication port, the first communication port and the second communication port being connected via an internal water cavity of the valve body;

[0009] The valve body has a filtering state and a backwashing state. When the valve body is turned to the filtering state, the water inlet channel is connected to the first communication port, and the second communication port is connected to the raw water channel. When the valve body is turned to the backwashing state, the raw water channel is connected to the second communication port, and the first communication port is connected to the sewage channel.

[0010] It also includes an air bag, which is placed in the container. The air bag includes a thin film bag with an enclosed space. The enclosed space is filled with gas so that the air bag is compressed under the action of water pressure to eliminate the water hammer impact on the water purifier. When the valve body is turned to the backwash state, the air bag loses pressure and expands, so that the clean water filtered in the container backwashes the filter material, so that the impurities and sewage intercepted by the filter material are flushed into the raw water channel and discharged through the sewage channel.

[0011] Furthermore, the filter material is a roll-shaped structure, and the center position of the filter material extends vertically to form the raw water channel. The top of the raw water channel is set as a first opening, and the second connecting port is set at the bottom of the valve body. The second connecting port is connected to the raw water channel through the first opening.

[0012] Furthermore, the main body cover is provided with a columnar accommodating cavity, the valve body is rotatably installed in the accommodating cavity, the water inlet channel and the sewage discharge channel are respectively arranged to penetrate the side walls of the accommodating cavity, and the first communicating port is provided on the outer peripheral surface of the valve body so that the first communicating port can be connected with the water inlet channel or the sewage discharge channel by rotating the valve body.

[0013] Furthermore, the bottom of the accommodating cavity is provided with a second opening, and the second opening is communicated with the first opening, so that the second communicating port is communicated with the raw water channel via the first opening and the second opening.

[0014] Furthermore, the valve body includes a valve core and a control handle, the valve core is rotatably installed in the accommodating cavity, and a connecting rod is provided on the top of the valve core. The connecting rod passes through the top wall of the accommodating cavity and is connected to the control handle.

[0015] Furthermore, the central axis of the water inlet channel is extended in the horizontal direction, the central axis of the sewage discharge channel is extended in the horizontal direction, and the central axis of the sewage discharge channel is perpendicular to the central axis of the water inlet channel.

[0016] Furthermore, there are two sewage channels, which are arranged opposite to each other, and there are two first connecting ports, which are arranged opposite to each other. When the valve body is turned to the backwash state, the two first connecting ports are connected to the two sewage channels in a one-to-one correspondence.

[0017] Furthermore, a mounting post is provided between the bottom of the filter material and the bottom wall of the main body bottle, and the air bag is an annular structure, with a mounting hole formed in the middle of the air bag, so that the air bag is mounted on the mounting post through the mounting hole for installation; or

[0018] The inner wall of the main body bottle is provided with a plurality of supporting ribs at intervals along the circumferential direction, and the upper and lower ends of the filter material are respectively in contact with the main body cover and the supporting ribs to form an accommodating space between the lower end of the filter material and the bottom wall of the main body bottle, and the air bag is placed in the accommodating space.

[0019] In addition, the technical solution of the present invention provides a new backwash filter water purifier, comprising:

[0020] A container comprising a main body bottle and a main body cover, wherein the main body cover has a water inlet channel, a water outlet channel and a sewage discharge channel, and the water outlet channel is connected to the inner cavity of the main body bottle;

[0021] A filter material is vertically arranged in the container and is provided with a raw water channel; and

[0022] a valve body, the valve body being installed in the main body cover;

[0023] The valve body has a filtering state and a backwashing state. When the valve body is switched to the filtering state, the water inlet channel is connected to the raw water channel through the valve body, so that water flowing from the water inlet channel flows into the raw water channel through the valve body, and is filtered from the inside to the outside by the filter material before flowing into the container and out through the water outlet channel. When the valve body is switched to the backwashing state, the raw water channel is connected to the sewage channel through the valve body.

[0024] It also includes an air bag, which is placed in the container. The air bag includes a thin film bag with an enclosed space. The enclosed space is filled with gas so that the air bag is compressed under the action of water pressure to eliminate the water hammer impact on the water purifier. When the valve body is switched to the backwash state, the air bag loses pressure and expands, so that the clean water filtered in the container backwashes the filter material, so that the impurities and sewage intercepted by the filter material are flushed into the raw water channel and discharged through the sewage channel.

[0025] Furthermore, a mounting post is provided between the bottom of the filter material and the bottom wall of the main body bottle, and the air bag is an annular structure, with a mounting hole formed in the middle of the air bag, so that the air bag is mounted on the mounting post through the mounting hole for installation; or

[0026] The inner wall of the main body bottle is provided with a plurality of supporting ribs at intervals along the circumferential direction, and the upper and lower ends of the filter material are respectively in contact with the main body cover and the supporting ribs to form an accommodating space between the lower end of the filter material and the bottom wall of the main body bottle, and the air bag is placed in the accommodating space. Beneficial effects

[0027] It can be seen from the above technical solution that the backwash filter water purifier of the present invention, when the valve body is turned to the filtering state, the water inlet channel is connected with the first connecting port, and the second connecting port is connected with the raw water channel, so that the raw water flowing in from the water inlet channel flows into the raw water channel of the filter material through the first connecting port and the second connecting port, and flows into the container after being filtered from the inside to the outside through the filter material, and flows out through the water outlet channel, so as to be used by people in daily life; when the valve body is turned to the backwash state, the raw water channel is connected with the second connecting port, and the first connecting port is connected with the sewage channel, so that the purified water filtered in the container backwashes the filter material, thereby realizing that the impurities and sewage intercepted by the filter material are flushed into the raw water channel and discharged through the sewage channel. In this way, the filtered water is used Clean water instead of untreated raw water back-flushes the filter material, avoiding secondary contamination of the filter material. The filter material adopts the method of filtering from the inside to the outside, which is exactly the opposite of the filtering structure principle of conventional filters. During backwashing, the clean water filtered in the container will back-flush the filter material and flow into the raw water channel. Since the surface area of ​​the filter material inside the raw water channel is small, the flushing flow rate per unit area is faster under the same flushing flow rate, thereby effectively improving the flushing effect. The entire filter material will be flushed from the outside to the inside, and most of the impurities and sewage can be flushed in the raw water channel and discharged through the sewage channel to restore the filtering performance of the filter material and increase the service life of the filter material. It has a simple structure, low cost, low failure rate, easy maintenance, easy production, and good practicality.

[0028] In order to make the technical concept and other purposes, advantages, features and functions of the present invention more clearly understood, preferred embodiments will be specifically cited in the following specific implementation manner and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] FIG1 is a schematic structural diagram of a novel backwash filter water purifier provided in an embodiment of the present application;

[0031] FIG2 is a top view of a novel backwash filter water purifier provided in an embodiment of the present application;

[0032] FIG3 is a cross-sectional view of section AA in FIG2 provided in an embodiment of the present application;

[0033] FIG4 is an exploded view of the structure of a novel backwash filter water purifier provided in an embodiment of the present application;

[0034] FIG5 is a structural exploded view of a novel backwash filter water purifier provided by an embodiment of the present application from another perspective;

[0035] FIG6 is a cross-sectional view of a novel backwash filter water purifier according to another embodiment of the present application.

[0036] The above drawings include the following reference numerals:

[0037] 10. Container; 110. Main bottle; 111. Mounting column; 112. Support rib; 113. Accommodating space; 120. Main cover; 121. Water inlet channel; 122. Water outlet channel; 124. Sewage channel; 125. Accommodating cavity; 126. Second opening;

[0038] 20. Valve body; 201. First communication port; 202. Second communication port; 210. Connecting rod; 220. Control handle;

[0039] 30. Filter material; 310. Raw water channel; 320. Upper cover; 321. First opening; 330. Lower cover; 331. Plug port;

[0040] 40. Air bag; 410. Film bag body; 420. Mounting hole. Modes for Carrying Out the Invention

[0041] The embodiment of the present application solves at least one of the technical problems existing in the prior art by providing a new type of backwash filter water purifier. The filter material 30 adopts a filtering principle that is exactly opposite to that of conventional technology, and filters step by step from the inside to the outside of the filter material 30, which significantly improves the filtering accuracy and filtering effect. In addition, backwashing is performed from the outside to the inside of the filter material 30. The surface area of ​​the filter material 30 inside the filter material 30 is smaller. Under the same flushing flow rate, the flushing flow rate per unit area is faster, so as to improve the flushing effect, and most of the impurities and sewage can be flushed into the raw water channel 310 and discharged through the sewage channel 124 to restore the filtering performance of the filter material 30, avoiding secondary pollution caused by residual impurities or mold and odor of the filter material 30, thereby effectively improving the quality of domestic water.

[0042] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0043] Please refer to Figures 1 to 6. This embodiment provides a new backwash filter water purifier, including a container 10, a filter material 30 and a valve body 20. The container 10 includes a main body bottle 110 and a main body cover 120. The main body cover 120 has an inlet channel 121, an outlet channel 122 and a sewage channel 124. The outlet channel 122 is connected to the inner cavity of the main body bottle 110; the filter material 30 is vertically arranged in the container 10, and the filter material 30 is provided with a raw water channel 310; the valve body 20 is rotatably arranged on the main body cover 120, and the outer portion of the valve body 20 is A first connecting port 201 and a second connecting port 202 are provided, and the first connecting port 201 and the second connecting port 202 are connected via the internal water cavity of the valve body 20; wherein, the valve body 20 has a filtering state and a backwashing state. When the valve body 20 is turned to the filtering state, the water inlet channel 121 is connected to the first connecting port 201, and the second connecting port 202 is connected to the raw water channel 310. When the valve body 20 is turned to the backwashing state, the raw water channel 310 is connected to the second connecting port 202, and the first connecting port 201 is connected to the sewage channel 124.

[0044] It can be seen that in the backwash filter water purifier of this embodiment, when the valve body 20 is turned to the filtering state, the water inlet channel 121 is connected with the first communicating port 201, and the second communicating port 202 is connected with the raw water channel 310, so that the raw water flowing in from the water inlet channel 121 flows into the raw water channel 310 of the filter material 30 through the first communicating port 201 and the second communicating port 202, so that it flows into the container 10 and flows out through the water outlet channel 122 after being filtered from the inside to the outside through the filter material 30, so as to be used by people in daily life. When the valve body 20 is turned to the backwash state, the raw water channel 310 is connected with the second communicating port 202, and the first communicating port 201 is connected with the sewage channel 124, so that the purified water filtered in the container 10 backwashes the filter material 30, thereby realizing that the impurities and sewage intercepted by the filter material 30 are flushed into the raw water channel 310 and discharged through the sewage channel 12 4 discharge, in this way, the filtered clean water is used instead of the untreated raw water to reversely flush the filter material 30, thereby avoiding the secondary contamination of the filter material 30. The filter material 30 adopts a filtering method from the inside to the outside, which is exactly the opposite of the filtering structure principle of the conventional filter. During backwashing, the filtered clean water in the container 10 will reversely flush the filter material 30 and flow into the raw water channel 310. Since the surface area of ​​the filter material 30 inside the raw water channel 310 is small, under the same flushing flow rate, the flushing flow rate per unit area is faster, thereby effectively improving the flushing effect. The entire filter material 30 will be flushed from the outside to the inside, and most of the impurities and sewage can be flushed in the raw water channel 310 and discharged through the sewage channel 124 to restore the filtering performance of the filter material 30 and improve the service life of the filter material 30. It has a simple structure, low cost, low failure rate, easy maintenance, easy production, and good practicality.

[0045] In this embodiment, the filter material 30 is a roll-shaped structure and a pp cotton filter cartridge can be used. The pp cotton filter cartridge is made of non-toxic and odorless polypropylene (PP) as raw material, and is made into a roll-shaped filter material 30 through heating, melting, spinning, pulling, and receiving forming. The pp cotton filter cartridge has a deep filtration structure with uniform pore size, sparse outside and dense inside, and has high filtration efficiency and excellent acid and alkali resistance. A raw water channel 310 is formed by vertically extending at the center position of the filter material 30. The top of the raw water channel 310 is provided with a first opening 321, and the second connecting port 202 is provided at the bottom of the valve body 20. The second connecting port 202 is connected to the raw water channel 310 through the first opening 321.

[0046] Specifically, the main body cover 120 is provided with a columnar accommodating cavity 125, and the valve body 20 is rotatably installed in the accommodating cavity 125. The water inlet channel 121 and the sewage discharge channel 124 are respectively arranged to penetrate the side walls of the accommodating cavity 125. The first communicating port 201 is provided on the outer peripheral surface of the valve body 20 so that the first communicating port 201 can be connected with the water inlet channel 121 or the sewage discharge channel 124 by rotating the valve body 20. When the valve body 20 is turned to the filtering state, the first communicating port 201 is connected with the water inlet channel 121; when the valve body 20 is turned to the backwashing state, the first communicating port 201 is connected with the sewage discharge channel 124. The valve body 20 can be automatically controlled by a motor or manually rotated.

[0047] Furthermore, the bottom of the accommodating cavity 125 is provided with a second opening 126, and the second opening 126 is connected to the first opening 321, so that the second communicating port 202 is connected to the raw water channel 310 via the first opening 321 and the second opening 126, wherein the top of the filter material 30 is covered with an upper cover body 320, and the middle part of the upper cover body 320 protrudes upward to form a first opening 321, so that the first opening 321 is inserted into the second opening 126 to realize the connection between the second communicating port 202 and the raw water channel 310, and a soft rubber ring is provided between the first opening 321 and the second opening 126 to achieve a sealing effect.

[0048] In this embodiment, the valve body 20 includes a valve core and a control handle 220. The valve core is rotatably installed in the accommodating chamber 125. A connecting rod 210 is provided on the top of the valve core. The connecting rod 210 passes through the top wall of the accommodating chamber 125 and is connected to the control handle 220. The valve core is a columnar structure, so that the valve core can be rotated by manually pulling the control handle 220 to switch the valve body 20 between the filtering state and the backwashing state. The structure is simple and the operation process is easy.

[0049] Specifically, the central axis of the water inlet channel 121 extends in the horizontal direction, the central axis of the sewage channel 124 extends in the horizontal direction, and the central axis of the sewage channel 124 is perpendicular to the central axis of the water inlet channel 121. In this way, by rotating the valve body 20 to 90 degrees clockwise or counterclockwise, the valve body 20 can be switched between the filtering state and the backwashing state.

[0050] Furthermore, there are two sewage channels 124, and the two sewage channels 124 are arranged opposite to each other. There are two first communication ports 201, and the two first communication ports 201 are arranged opposite to each other. When the valve body 20 is turned to the backwash state, the two first communication ports 201 are connected to the two sewage channels 124 in a one-to-one correspondence, and the water inlet channel 121 is blocked and blocked by the outer wall of the valve body 20. When the valve body 20 is turned to the filtering state, one of the first communication ports 201 is connected to the water inlet channel 121, and the other first communication port 201 is blocked and blocked, and the sewage channel 124 is blocked and blocked by the outer wall of the valve body 20. In this way, by setting two opposite sewage channels 124, the control handle 220 can switch the valve body 20 to the backwash state whether it is rotated 90 degrees counterclockwise or clockwise, so as to prevent the container 10 from being installed in a narrow area of ​​the indoor space, which will cause the control handle 220 to be restricted when manually rotating. It has good applicability and is easy to install, thereby improving the practicality and convenience of the product.

[0051] In this embodiment, the backwash filter water purifier also includes an air bag 40, which is placed in the container 10. The air bag 40 includes a thin film bag body 410 with an enclosed space, and the enclosed space is filled with gas. The thin film bag body 410 can be made of PE material, so that the air bag 40 is compressed under the action of water pressure to eliminate the water hammer impact on the water purifier. When the valve body 20 is turned to the backwash state, the air bag 40 loses pressure and expands, so that the clean water filtered in the container 10 backwashes the filter material 30, so that the impurities and sewage intercepted by the filter material 30 are flushed into the raw water channel 310 and discharged through the sewage channel 124.

[0052] Specifically, a mounting post 111 is provided between the bottom of the filter material 30 and the bottom wall of the main body bottle 110. The air bag 40 is an annular structure, and a mounting hole 420 is formed in the middle of the air bag 40, so that the air bag 40 can be mounted on the mounting post 111 through the mounting hole 420 for installation. The structure is simple, the installation is convenient, and the production cost is low. The mounting post 111 is provided on the bottom wall of the main body bottle 110, and the bottom cover of the filter material 30 is provided with a lower cover body 330. The bottom of the lower cover body 330 protrudes and extends to form an insertion port 331, so that the filter material 30 can be inserted into the insertion port 331 through the mounting post 111 for installation and fixation, and the air bag 40 is placed in the empty space between the bottom of the filter material 30 and the main body bottle 110. The space layout is reasonable, which effectively improves the space utilization rate in the container 10.

[0053] In other embodiments, as shown in Figure 6, the inner wall of the main bottle 110 is provided with a plurality of support ribs 112 at intervals along the circumferential direction, and the upper and lower ends of the filter material 30 are respectively abutted against the main body cover 120 and the support ribs 112 to form an accommodating space between the lower end of the filter material 30 and the bottom wall of the main bottle 110, and the air bag 40 is placed in the accommodating space 113. The air bag 40 can adopt a spherical structure. In this way, the filter material 30 is supported and installed by the support ribs 112 on the inner wall of the main bottle 110, so that an accommodating space is formed between the lower end of the filter material 30 and the bottom wall of the main bottle 110 for placing the air bag 40. The structure is simple and compact, easy to assemble, low processing difficulty and production cost, reasonable space layout, and effectively improves the space utilization rate in the container 10.

[0054] Furthermore, the volume of the air bladder 40 is approximately 0.75-1.25 times the volume of the raw water channel 310. This configuration ensures that the expanded volume of the air bladder 40 is close to that of the raw water channel 310. This allows the air bladder 40 to expand due to loss of pressure during backwashing, discharging sewage equivalent to its expanded volume from the container 10 through the drain channel 124. This allows the air bladder 40 to provide enhanced assistance for backwashing the filter material 30 through its expansion. Alternatively, an external pressure tank may be installed on the outlet channel 122 of the backwash filter purifier. During backwashing, the air bladder inside the pressure tank will expand, also assisting the filter material 30 in backwashing. Alternatively, a plastic water pipe with a low elastic modulus (such as a PPR water pipe) may be used on the outlet channel 122 of the backwash filter purifier. This pipe's contraction due to loss of pressure during backwashing can also assist the filter material 30 in backwashing, discharging sewage equivalent to its contracted volume from the container 10 through the drain channel 124.

[0055] When the valve body 20 switches to the filtering state, untreated raw water flows from the water inlet channel 121 through the valve body 20 into the raw water channel 310 of the filter material 30. After being filtered layer by layer from the inside to the outside by the filter material 30, it enters the clean water space between the filter material 30 and the main bottle 110 and finally flows out from the water outlet channel 122 for people's daily use. At this time, impurities in the raw water will be trapped in the raw water channel 310 of the filter material 30.

[0056] When water is stopped, the air bag 40 in the container 10 will be compressed under the action of water pressure, which can effectively eliminate the water hammer impact on the filter water purifier;

[0057] When the valve body 20 is turned to the backwash state, the purified water filtered in the container 10 is used to reversely flush the filter material 30, so that the impurities and sewage intercepted by the filter material 30 are flushed into the raw water channel 310 and discharged through the sewage channel 124. At this time, the raw water channel 310 is connected to the second communication port 202, and the first communication port 201 is connected to the sewage channel 124. The sewage channel 124 is equivalent to a pressure relief port. The air bag 40 will lose pressure and expand, and the purified water in the container 10, which is equal to the expanded volume of the air bag 40, will be squeezed back to the raw water channel 310 of the filter material 30, and the impurities and sewage intercepted in the raw water channel 310 will be flushed down and discharged out of the container 10 through the sewage channel 124.

[0058] Among them, the volume of the raw water channel 310 of the filter material 30 is about 1 / 15 of the overall volume of the filter material 30. The water capacity of the raw water channel 310 is about 150 ml, which is relatively small and close to the contracted volume of the air bag 40. Therefore, the pressure generated by the decompression expansion of the air bag 40 can just be used to discharge the impurities and sewage in the raw water channel 310. In addition to using the air bag 40, the external connecting water pipe and the main bottle 110 themselves will also expand and contract under the action of water pressure. Therefore, the volume deformation of the air bag 40, the water pipe and the main bottle 110 after decompression is generally greater than the volume of the raw water channel 310 of the filter material 30. In this way, impurities and sewage can be discharged without wasting too much flushing water.

[0059] Backwashing is the process of water flowing in the opposite direction from the outer surface of the filter material 30 to the inner hole of the filter material 30. The outer surface area of ​​the filter material 30 is usually more than 15 times the inner surface area of ​​the inner hole. For the same amount of flushing water, the flow rate of water per unit area on the inner surface of the filter material 30 is 15 times that on its outer surface. Therefore, the flushing effect of flushing from the outside of the filter material 30 to the inside is much better than flushing from the inside to the outside. The flushing effect depends on the instantaneous pressure difference generated on the surface of the filter material 30. When the filter material 30 switches from the filtering state to the backwashing state, a pressure difference will be formed between the inside of the filter purifier and the sewage channel 124. The faster the filter material 30 switches, the greater the pressure difference. The impurities adhered to the filter material 30 will be instantly washed away, and then these impurities will be discharged from the sewage channel 124. The impurities can be discharged cleanly with an amount of water equal to that of the raw water channel 310. There is no need to consume a large amount of water for flushing, and the flushing effect is better. After the flushing is completed, the valve body 20 can be rotated to return to the initial filtering state.

[0060] In this embodiment, by coordinating the structural design of the valve body 20 with the air bag 40, the filter material 30 can be backwashed with filtered clean water, thereby avoiding secondary contamination of the filter material 30 and making it healthier to use.

[0061] Among them, the filtering structure of the water purifier from the inside to the outside can achieve very high precision without affecting the water pressure. Since the filtering area of ​​the outer layer of the filter material 30 is 15 times that of the inner layer, the resistance is lower, and the filtering precision of the filter material 30 can be gradually improved from the inside to the outside. Even the outer layer of the filter material 30 is 15 times that of the inner layer without increasing the resistance of the filter material 30. The conventional filter has a filtering structure from the outside to the inside, and the inner surface of the filter material 30 is 1 / 15 of the outer surface. It is impossible to improve the filtering precision without increasing the resistance.

[0062] In addition, the filter's inside-out filtering structure, combined with the transparent bottle container 10, makes it easy to observe the usage status of the filter material 30. If the interception capacity of the filter material 30 is saturated, the outermost layer of the filter material 30 will change color, indicating that the entire filter material 30 has been penetrated by pollutants and needs to be replaced. In contrast, the conventional filter has an outside-in filtering structure, in which water flows through the filter material 30 from the outside to the inside, and the outer layer of the filter material 30 changes color easily. However, whether it should be replaced depends on the status of the inner layer of the filter material 30. If the inner layer of the filter material 30 is very clean, it can still be used, but even a transparent filter bottle cannot observe the actual condition.

[0063] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0064] In the backwash filter water purifier of the present invention, when the valve body 20 is turned to the filtering state, the water inlet channel 121 is connected with the first communicating port 201, and the second communicating port 202 is connected with the raw water channel 310, so that the raw water flowing in from the water inlet channel 121 flows into the raw water channel 310 of the filter material 30 through the first communicating port 201 and the second communicating port 202, and flows into the container 10 and out through the water outlet channel 122 after being filtered from the inside to the outside through the filter material 30, so as to be used by people in daily life. When the valve body 20 is turned to the backwash state, the raw water channel 310 is connected with the second communicating port 202, and the first communicating port 201 is connected with the sewage channel 124, so that the purified water filtered in the container 10 backwashes the filter material 30, thereby realizing that the impurities and sewage intercepted by the filter material 30 are flushed into the raw water channel 310 and discharged through the sewage channel The filter material 30 is then backwashed through the drain channel 124. The filtered clean water is then backwashed through the drain channel 124 to prevent the filter material 30 from being contaminated again. The filter material 30 is filtered from the inside to the outside, which is exactly the opposite of the filtering structure principle of a conventional filter. During backwashing, the filtered clean water in the container 10 will backwash the filter material 30 and flow into the raw water channel 310. Since the surface area of ​​the filter material 30 inside the raw water channel 310 is relatively small, the flushing flow rate per unit area is faster under the same flushing flow rate, thereby effectively improving the flushing effect. The entire filter material 30 will be flushed from the outside to the inside, and most of the impurities and sewage can be flushed into the raw water channel 310 and discharged through the sewage channel 124 to restore the filtering performance of the filter material 30. The filter material 30 has a simple structure, low cost, low failure rate, is easy to maintain, easy to produce, and has good practicality.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0067] In the description of this application, the terms "center", "up", "down", "front", "back", "left", "right", "lateral", "longitudinal", "vertical", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application.

[0068] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "set, connect, connect, install" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] It should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0070] In addition, it should be noted that in the description of the present invention, the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application. In the description of the present invention, unless otherwise stated, the meaning of "multiple" refers to two or more.

[0071] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A new type of backwash filter water purifier, characterized in that, include: A container comprising a main body bottle and a main body cover, wherein the main body cover has a water inlet channel, a water outlet channel and a sewage discharge channel, and the water outlet channel is connected to the inner cavity of the main body bottle; A filter material is vertically arranged in the container and is provided with a raw water channel; and a valve body, the valve body being rotatably disposed on the main body cover, the valve body being provided with a first communication port and a second communication port, the first communication port and the second communication port being connected via an internal water cavity of the valve body; The valve body has a filtering state and a backwashing state. When the valve body is turned to the filtering state, the water inlet channel is connected to the first communication port, and the second communication port is connected to the raw water channel. When the valve body is turned to the backwashing state, the raw water channel is connected to the second communication port, and the first communication port is connected to the sewage channel. It also includes an air bag, which is placed in the container. The air bag includes a thin film bag with an enclosed space. The enclosed space is filled with gas so that the air bag is compressed under the action of water pressure to eliminate the water hammer impact on the water purifier. When the valve body is turned to the backwash state, the air bag loses pressure and expands, so that the clean water filtered in the container backwashes the filter material, so that the impurities and sewage intercepted by the filter material are flushed into the raw water channel and discharged through the sewage channel.

2. The novel backwash filter water purifier according to claim 1 is characterized in that: The filter material is a roll-shaped structure, and the center position of the filter material extends vertically to form the raw water channel. The top of the raw water channel is set as a first opening, and the second connecting port is set at the bottom of the valve body. The second connecting port is connected to the raw water channel through the first opening.

3. The novel backwash filter water purifier according to claim 2 is characterized in that: The main body cover is provided with a columnar accommodating cavity, the valve body is rotatably installed in the accommodating cavity, the water inlet channel and the sewage discharge channel are respectively arranged to penetrate the side walls of the accommodating cavity, and the first communicating port is provided on the outer peripheral surface of the valve body so that the first communicating port can be connected with the water inlet channel or the sewage discharge channel by rotating the valve body.

4. The novel backwash filter water purifier according to claim 3 is characterized in that: The bottom of the accommodating cavity is provided with a second opening, and the second opening is communicated with the first opening, so that the second communicating port is communicated with the raw water channel via the first opening and the second opening.

5. The novel backwash filter water purifier according to claim 3 is characterized in that: The valve body includes a valve core and a manipulation handle. The valve core is rotatably installed in the accommodating cavity. A connecting rod is provided on the top of the valve core. The connecting rod passes through the top wall of the accommodating cavity and is connected to the manipulation handle.

6. The novel backwash filter water purifier according to claim 3 is characterized in that: The central axis of the water inlet channel extends in the horizontal direction, the central axis of the sewage discharge channel extends in the horizontal direction, and the central axis of the sewage discharge channel is perpendicular to the central axis of the water inlet channel.

7. The novel backwash filter water purifier according to claim 6 is characterized in that: There are two sewage channels, which are arranged opposite to each other. There are two first communicating ports, which are arranged opposite to each other. When the valve body is turned to the backwash state, the two first communicating ports are connected to the two sewage channels in a one-to-one correspondence.

8. The novel backwash filter water purifier according to claim 1 is characterized in that: A mounting post is provided between the bottom of the filter material and the bottom wall of the main body bottle, and the air bag is an annular structure, with a mounting hole formed in the middle of the air bag, so that the air bag can be installed by being sleeved on the mounting post through the mounting hole; or The inner wall of the main body bottle is provided with a plurality of supporting ribs at intervals along the circumferential direction, and the upper and lower ends of the filter material are respectively in contact with the main body cover and the supporting ribs to form an accommodating space between the lower end of the filter material and the bottom wall of the main body bottle, and the air bag is placed in the accommodating space.

9. A new type of backwash filter water purifier, characterized in that: include: A container comprising a main body bottle and a main body cover, wherein the main body cover has a water inlet channel, a water outlet channel and a sewage discharge channel, and the water outlet channel is connected to the inner cavity of the main body bottle; A filter material is vertically arranged in the container and is provided with a raw water channel; and a valve body, the valve body being installed in the main body cover; The valve body has a filtering state and a backwashing state. When the valve body is switched to the filtering state, the water inlet channel is connected to the raw water channel through the valve body, so that water flowing from the water inlet channel flows into the raw water channel through the valve body, and is filtered from the inside to the outside by the filter material before flowing into the container and out through the water outlet channel. When the valve body is switched to the backwashing state, the raw water channel is connected to the sewage channel through the valve body. It also includes an air bag, which is placed in the container. The air bag includes a thin film bag with an enclosed space. The enclosed space is filled with gas so that the air bag is compressed under the action of water pressure to eliminate the water hammer impact on the water purifier. When the valve body is switched to the backwash state, the air bag loses pressure and expands, so that the clean water filtered in the container backwashes the filter material, so that the impurities and sewage intercepted by the filter material are flushed into the raw water channel and discharged through the sewage channel.

10. The novel backwash filter water purifier according to claim 9 is characterized in that: A mounting post is provided between the bottom of the filter material and the bottom wall of the main body bottle, and the air bag is an annular structure, with a mounting hole formed in the middle of the air bag, so that the air bag can be installed by being sleeved on the mounting post through the mounting hole; or The inner wall of the main body bottle is provided with a plurality of supporting ribs at intervals along the circumferential direction, and the upper and lower ends of the filter material are respectively in contact with the main body cover and the supporting ribs to form an accommodating space between the lower end of the filter material and the bottom wall of the main body bottle, and the air bag is placed in the accommodating space.

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