CN214634283U - Water purifying equipment - Google Patents

Abstract

The application relates to a water purification unit. The apparatus comprises: the multiway valve is matched and connected on the main cavity and is communicated with the inner cavity fluid of the main cavity, and the multiway valve is provided with an air inlet and a water inlet; when the multi-way valve is positioned at a target station, gas enters the multi-way valve through the gas inlet, liquid enters the multi-way valve through the water inlet, the gas and the liquid are mixed in the multi-way valve, and formed gas-liquid mixed liquid enters the main cavity through the multi-way valve. By adopting the equipment, gas can be introduced to assist in cleaning the filter material, so that the flux recovery rate of the filter material is improved, and the service life of the filter material is prolonged.

Description

Water purifying equipment

Technical Field

The application relates to the technical field of water purification, in particular to a water purifying device.

Background

The tap water contains pollutants such as silt, rust, residual chlorine, heavy metals, organic matters and the like, and if the tap water is not subjected to purification treatment, the tap water can cause certain damage to human bodies after being used for a long time, and the service life of wading electric products can be influenced. Full house water purification products are favored by users because they remove the above contaminants.

The central water purifier is used as a class of full-house water purification products, and mainly purifies water by using filter materials such as activated carbon, quartz sand, KDF and the like. After the central water purifier is used for a certain time, the filter material is polluted, and the flux and the service life are influenced if the filter material is not washed and recovered.

At present, the flux recovery method is to utilize water to carry out backwashing, but for the filter material with abundant micropore structure, its adsorption site is outside being located the surface, more be located inside micropore, if the adsorption site in the filter material micropore is covered by small particulate matter, then can influence and get rid of the chlorine residue effect, however conventional backwashing water can't get into in the filter material micropore, and it is not good to get rid of the effect to the pollutant in the micropore, leads to the filter material clean incomplete, and the flux recovery rate is low, influences the filter material life-span.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a water purifying apparatus capable of improving the flux recovery rate of the filter material and prolonging the service life of the filter material.

A water purification apparatus, the apparatus comprising: a multiway valve and a main chamber, the multiway valve coupled to the main chamber and in fluid communication with an inner chamber of the main chamber, the multiway valve having an air inlet and a water inlet; when the multi-way valve is positioned at a target station, air enters the multi-way valve through the air inlet, water enters the multi-way valve through the water inlet, the air and the water are mixed in the multi-way valve, and formed gas-liquid mixed liquid enters the main cavity through the multi-way valve.

When the multi-way valve is positioned at a target station (such as a cleaning station), gas can enter the multi-way valve through the gas inlet and be mixed with liquid entering the multi-way valve to form gas-liquid mixed liquid for cleaning filter materials in the main cavity. Micro bubbles can be generated by introducing gas, the cleaning of pollutants on the surface of the filter material is more thorough by virtue of local high-pressure impact formed by gas-liquid scrubbing, particle collision and micro bubble breakage, and the micro bubbles can permeate into microporous pore passages of the filter material, so that the cleaning range can cover more adsorption sites, the recovery rate of the filter material flux is high, and the service life of the filter material is prolonged.

In one embodiment, the apparatus further comprises: and the air inlet pipeline is used for communicating the air inlet with the outside. Accordingly, when the multi-way valve is at the target station, external air can reach the air inlet through the air inlet pipeline and enter the multi-way valve from the air inlet.

In one embodiment, the apparatus further comprises: a perforated element through which the air inlet duct communicates with the outside. The porous element has a through hole structure, and the through hole is used for dispersing air entering the air inlet pipeline, so that bubbles can be formed, and the cleaning effect of the filter material is improved. Accordingly, when the multi-way valve is at the target station, external air is dispersed by the perforated element, enters the air inlet pipeline, reaches the air inlet through the air inlet pipeline, and enters the multi-way valve from the air inlet.

In one embodiment, the apertured member is an aerator. The aeration head can make the bubble that gets into the multiple unit valve more even, and the aeration head has abundant micropore simultaneously, more is favorable to forming the microbubble. Accordingly, when the multi-way valve is positioned at the target station, external air is dispersed by the aeration head, enters the air inlet pipeline, reaches the air inlet through the air inlet pipeline, and enters the multi-way valve from the air inlet.

In one embodiment, the apparatus further comprises: and the water stopping piece is arranged on the air inlet pipeline. The water stop piece has the effect of preventing water from passing through, namely, water in the multi-way valve can be prevented from leaking from the air inlet pipeline, and therefore the problem of water channeling when the multi-way valve is switched between stations can be solved. Accordingly, when the multi-way valve is at the target station, external air is dispersed by the perforated element, enters the air inlet pipeline, reaches the air inlet through the water stop piece, and enters the multi-way valve from the air inlet.

In one embodiment, the water stop is a one-way valve. The allowable direction of the check valve is a direction from the perforated member to the multiplex valve, i.e., in correspondence with the intake direction. The check valve can effectively prevent water in the multi-way valve from leaking from the air inlet pipeline, so that the problem of water channeling caused by station switching of the multi-way valve can be solved. Accordingly, when the multi-way valve is positioned at the target station, external air is dispersed by the porous element, enters the air inlet pipeline, reaches the air inlet through the one-way valve, and enters the multi-way valve from the air inlet.

In one embodiment, the water stopping piece is connected with a controller, the controller controls the on-off state of the water stopping piece, and the water stopping piece is an electromagnetic valve or an electric ball valve. The on-off state of the electromagnetic valve or the electric ball valve is used for controlling the opening and closing of the air inlet pipeline, when the electromagnetic valve or the electric ball valve is opened, the air inlet pipeline is opened, so that air can reach the air inlet through the air inlet pipeline and enter the multi-way valve from the air inlet; when the electromagnetic valve or the electric ball valve is closed, namely the air inlet pipeline is closed, water channeling is prevented. Accordingly, when the multi-way valve is positioned at the target station, the controller controls the electromagnetic valve or the electric ball valve to be opened, external air enters the air inlet pipeline after being dispersed by the porous element, reaches the air inlet through the electromagnetic valve or the electric ball valve and enters the multi-way valve from the air inlet. In the process of station switching of the multi-way valve, the controller controls the electromagnetic valve or the electric ball valve to be closed so as to prevent water in the multi-way valve from leaking out of the air inlet pipeline, and therefore water channeling is prevented.

In one embodiment, the apparatus further comprises: and the ozone generating device is communicated with the air inlet pipeline. Accordingly, ozone generated by the ozone generating device can enter the air inlet pipeline and be mixed with air entering the air inlet pipeline to form ozone-air mixed gas. Because ozone has strong oxidizing property, the organic substances adsorbed by the filter material can be degraded, so that the filter material releases more active sites, thereby being beneficial to further improving the flux recovery rate of the filter material and prolonging the service life of the filter material. In addition, the ozone can also effectively kill bacterial microorganisms in the water body, and the water use sanitation and safety are guaranteed.

In one embodiment, an upper water distributor, a central pipe and a lower water distributor are arranged in the main cavity, two ends of the central pipe are respectively connected with the multi-way valve and the lower water distributor, and the upper water distributor is connected with the multi-way valve.

In one embodiment, the multi-way valve further has a waste water port; when the multi-way valve is positioned at a target station, the gas-liquid mixed liquid enters the central pipe through the multi-way valve, reaches the lower water distributor through the central pipe, enters the main cavity through the lower water distributor to clean filter materials, and generated waste liquid enters the multi-way valve through the upper water distributor and is discharged through the waste water outlet. Accordingly, gas-liquid mixed liquid for cleaning the filter material is diffused by the lower water distributor and enters the main cavity, the filter material is cleaned from bottom to top, and generated waste liquid is collected by the upper water distributor and then discharged from the waste water port.

In one embodiment, the multi-way valve further has a waste water port; when the multi-way valve is positioned at a target station, the gas-liquid mixed liquid enters the upper water distributor through the multi-way valve and enters the main cavity through the upper water distributor to clean the filter material, and the generated waste liquid enters the central pipe through the lower water distributor, enters the multi-way valve through the central pipe and is discharged through the waste water outlet. Therefore, gas-liquid mixed liquid for cleaning the filter material is diffused by the upper water distributor and enters the main cavity, the filter material is cleaned from top to bottom, and generated waste liquid is collected by the lower water distributor and then discharged from the waste water port.

Drawings

FIG. 1 is a schematic view showing the structure of a water purifying apparatus according to an embodiment;

FIG. 2 is a schematic structural diagram of a water purifying apparatus in one embodiment;

FIG. 3 is a schematic structural diagram of a water purifying apparatus in one embodiment;

FIG. 4 is a schematic structural diagram of a water purifying apparatus in one embodiment;

FIG. 5 is a schematic diagram showing the structure of a water purifying apparatus according to an embodiment;

FIG. 6 is a schematic diagram of the air intake principle of the water purification apparatus in one embodiment;

fig. 7 is a schematic air intake principle diagram of the water purification device in one embodiment.

Wherein: 10-a multi-way valve; 11-an air inlet; 12-a water inlet; 13-producing a water gap; 14-a waste water gap; 20-a main cavity; 21-upper water distributor; 22-a central tube; 23-lower water distributor; 30-an air inlet duct; 31-a branch conduit; 40-a foraminous element; 50-a water stop; 51-a one-way valve; 52-solenoid valve; 60-a controller; 70-ozone generating device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, there is provided a water purifying apparatus including: the multiway valve 10 and the main cavity 20, the multiway valve 10 is coupled to the main cavity 20 and is in fluid communication with the inner cavity of the main cavity 20, the multiway valve 10 has an air inlet 11 and a water inlet 12; when the multi-way valve 10 is at a target station, gas enters the multi-way valve 10 through the gas inlet 11, liquid enters the multi-way valve 10 through the water inlet 12, the gas and the liquid are mixed in the multi-way valve 10, and formed gas-liquid mixed liquid enters the main cavity 20 through the multi-way valve 10.

The main chamber 20 contains filter media, such as activated carbon, quartz sand, etc., and the main chamber 20 may be a glass fiber reinforced plastic canister. The multi-way valve 10 may have a plurality of stations (e.g., water supply, cleaning, etc.), the target station represents a station to which gas is to be introduced, such as a cleaning station, the cleaning station may include a normal forward cleaning station or a reverse cleaning station, and may further include a bubble-assisted cleaning station, which may be a top-down cleaning (forward cleaning) or a bottom-up cleaning (reverse cleaning), without being limited thereto.

The gas entering the multi-way valve 10 can be air, other gases such as ozone, and mixed gas of other gases and air such as ozone-air mixed gas. The liquid entering the multi-way valve 10 refers to liquid for cleaning the filter material, and may be water or other liquid capable of cleaning the filter material.

In the water purifying apparatus, the multi-way valve 10 has the gas inlet 11, when the multi-way valve 10 is located at a target station (for example, a bubble auxiliary cleaning station), gas can enter the multi-way valve 10 through the gas inlet 11 to be mixed with liquid entering the multi-way valve 10, so as to form a gas-liquid mixed liquid for cleaning the filter material in the main chamber 20. Micro bubbles can be generated by introducing gas, the cleaning of pollutants on the surface of the filter material is more thorough by virtue of local high-pressure impact formed by gas-liquid scrubbing, particle collision and micro bubble breakage, and the micro bubbles can permeate into microporous pore passages of the filter material, so that the cleaning range can cover more adsorption sites, the recovery rate of the filter material flux is high, and the service life of the filter material is prolonged.

In one embodiment, as shown in fig. 2, the water purifying apparatus further includes: an intake duct 30 for communicating the intake port 11 with the outside. One end of the air inlet duct 30 communicates with the outside, and one end of the air inlet duct 30 may be open to directly communicate with the air. Thus, when the multi-way valve 10 is at a target station (e.g., a bubble assist purge station), outside air can reach the air inlet 11 through the air inlet duct 30 and enter the multi-way valve 10 from the air inlet 11.

In one embodiment, as shown in fig. 2, the water purifying apparatus further includes: a perforated member 40, through which the air intake duct 30 communicates with the outside. The perforated element 40 has a through hole structure for dispersing air entering the air inlet duct 30, which is beneficial to forming bubbles and improving the cleaning effect of the filter material. Thus, when the multi-way valve 10 is at the target station (e.g., the bubble assist purge station), the external air is dispersed through the perforated member 40, enters the intake duct 30, passes through the intake duct 30 to the intake port 11, and enters the multi-way valve 10 from the intake port 11.

In one embodiment, the perforated member 40 is an aeration head, which can make the bubbles entering the multi-way valve 10 more uniform, and the aeration head has abundant micropores, which is more favorable for forming micro bubbles. Thus, when the multi-way valve 10 is at the target station (e.g., the bubble assist cleaning station), the external air is dispersed by the aeration head, enters the air inlet duct 30, passes through the air inlet duct 30 to the air inlet 11, and enters the multi-way valve 10 from the air inlet 11.

It should be noted that the perforated element 40 is not limited to the aeration head, and may have other structures with through holes, further, the perforated element 40 may have a structure with uniformly distributed through holes, and further, the diameter of the through holes may be 100nm to 100 μm.

In one embodiment, as shown in fig. 2, the water purifying apparatus further includes: a water stop 50 disposed on the intake duct 30. When the multi-way valve 10 is switched from one station to another station, a phenomenon that water in the multi-way valve 10 flows out from the air inlet pipe 30 may occur during the switching process, and the phenomenon is simply referred to as water channeling. The water stop 50 has the function of preventing water from passing through, i.e. water in the multi-way valve 10 can be prevented from leaking out of the air inlet pipeline 30, so that the problem of water leakage when the station of the multi-way valve 10 is switched can be solved. Thus, when the multi-way valve 10 is in a target station (e.g., a bubble assist purge station), outside air is dispersed through the perforated member 40, enters the intake duct 30, passes through the water stop 50 to the intake port 11, and enters the multi-way valve 10 from the intake port 11.

In one embodiment, as shown in FIG. 3, the water stop 50 is a check valve 51, and the allowable direction of the check valve 51 is the direction from the perforated member 40 to the multiplex valve 10, i.e., the direction corresponding to the air intake direction. The check valve 51 can effectively prevent the water in the multi-way valve 10 from leaking out of the air inlet pipeline 30, so that the problem of water leakage when the station of the multi-way valve 10 is switched can be solved. Thus, when the multi-way valve 10 is at a target station (e.g., a bubble assist purge station), external air is dispersed through the perforated member 40, enters the intake duct 30, passes through the check valve 51 to the intake port 11, and enters the multi-way valve 10 from the intake port 11.

In another embodiment, as shown in fig. 4, the water stop 50 is a solenoid valve 52, the solenoid valve 52 is connected to a controller 60, and the controller 60 controls the on/off state of the solenoid valve 52. The on-off state of the electromagnetic valve 52 is used for controlling the opening and closing of the air inlet pipeline 30, when the electromagnetic valve 52 is opened, namely the air inlet pipeline 30 is opened, air can reach the air inlet 11 through the air inlet pipeline 30 and enter the multi-way valve 10 from the air inlet 11; when the solenoid valve 52 is closed, i.e., the intake duct 30 is closed, the blow-by is prevented.

The solenoid valve 52 is fully opened or fully closed, and compared with a non-return structure in the check valve 51, the solenoid valve 52 hardly interferes with the micro-bubbles generated by the intake air in the opened state. When micro bubbles need to be generated, the controller 60 controls the multi-way valve 10 to rotate to a target station (for example, a bubble assisted cleaning station) and controls the electromagnetic valve 52 to be closed at the same time, so that water in the multi-way valve 10 is prevented from leaking out of the air inlet pipe 30, and therefore water leakage is prevented; after the target station is switched to the right position, the controller 60 controls the electromagnetic valve 52 to open, so that air reaches the air inlet 11 through the air inlet pipe 30, enters the multi-way valve 10 from the air inlet 11, and is mixed with the liquid entering the multi-way valve 10 to form a gas-liquid mixed liquid, and the gas-liquid mixed liquid enters the main cavity 20 through the multi-way valve 10 and is used for cleaning the filter material in the main cavity 20.

In another embodiment, the water stop 50 may also be an electric ball valve, and the electric ball valve is connected to the controller 60, and the controller 60 controls the on-off state of the electric ball valve. The on-off state of the electric ball valve is used for controlling the opening and closing of the air inlet pipeline 30, when the electric ball valve is opened, namely the air inlet pipeline 30 is opened, air can reach the air inlet 11 through the air inlet pipeline 30 and enter the multi-way valve 10 from the air inlet 11; when the electric ball valve is closed, namely the air inlet pipeline 30 is closed, water channeling is prevented.

The on-off state of the electric ball valve is fully opened or fully closed, and compared with a non-return structure in the check valve 51, the electric ball valve hardly has any interference on the micro bubbles generated by air intake in the opening state. When micro bubbles need to be generated, the controller 60 controls the multi-way valve 10 to rotate to a target station (for example, a bubble auxiliary cleaning station) and controls the electric ball valve to be closed at the same time, so that water in the multi-way valve 10 is prevented from leaking out of the air inlet pipeline 30, and water channeling is prevented; after the target station is switched in place, the controller 60 controls the electric ball valve to open, so that air reaches the air inlet 11 through the air inlet pipeline 30, enters the multi-way valve 10 from the air inlet 11, and is mixed with liquid entering the multi-way valve 10 to form gas-liquid mixed liquid, and the gas-liquid mixed liquid enters the main cavity 20 through the multi-way valve 10 and is used for cleaning filter materials in the main cavity 20.

In one embodiment, as shown in fig. 5, the water purifying apparatus further includes: the ozone generating device 70 is communicated with the air inlet pipeline 30, so that ozone generated by the ozone generating device 70 can enter the air inlet pipeline 30 and be mixed with air entering the air inlet pipeline 30 to form ozone-air mixed gas.

The ozone generating device 70 is connected to the controller 60, and the controller 60 controls the operating state of the ozone generating device 70. When the multi-way valve 10 is at a target station (for example, a bubble assisted cleaning station), the controller 60 controls the ozone generating device 70 to operate to generate ozone, the ozone enters the air inlet pipe 30 and mixes with air entering the air inlet pipe 30 to form ozone-air mixed gas, the ozone-air mixed gas reaches the air inlet 11 through the air inlet pipe 30 and enters the multi-way valve 10 from the air inlet 11 to mix with liquid entering the multi-way valve 10 to form gas-liquid mixed liquid, and the gas-liquid mixed liquid enters the main chamber 20 through the multi-way valve 10 to clean the filter material in the main chamber 20.

Because ozone has strong oxidizing property, the organic substances adsorbed by the filter material can be degraded, so that the filter material releases more active sites, thereby being beneficial to further improving the flux recovery rate of the filter material and prolonging the service life of the filter material. In addition, the ozone can also effectively kill bacterial microorganisms in the water body, and the water use sanitation and safety are guaranteed.

In one embodiment, as shown in fig. 5, the ozone generating device 70 may be provided on the branch pipe 31 of the air intake pipe 30, and both ends of the branch pipe 31 communicate with the ozone generating device 70 and the air intake pipe 30, respectively. Thus, when the multi-way valve 10 is located at a target station (e.g., a bubble assisted cleaning station), the controller 60 controls the ozone generating device 70 to operate to generate ozone, the ozone enters the air inlet pipe 30 through the branch pipe 31 to be mixed with air entering the air inlet pipe 30 to form an ozone-air mixed gas, the ozone-air mixed gas reaches the air inlet 11 through the air inlet pipe 30 and enters the multi-way valve 10 from the air inlet 11 to be mixed with liquid entering the multi-way valve 10 to form a gas-liquid mixed liquid, and the gas-liquid mixed liquid enters the main chamber 20 through the multi-way valve 10 to clean the filter material in the main chamber 20.

It should be noted that the connection position of the branch pipe 31 and the air inlet pipe 30 is not limited to that shown in fig. 5, the connection position of the branch pipe 31 and the air inlet pipe 30 is located on the left side of the water stop 50, and in other embodiments, the connection position of the branch pipe 31 and the air inlet pipe 30 may be located on the right side of the water stop 50, that is, the air may be mixed with the ozone before reaching the water stop 50 or after reaching the water stop 50, which is not limited to this. The ozone generator 70 may be a device that generates ozone by electrolyzing air or a device that generates ozone by electrolyzing water, and is not limited thereto.

In one embodiment, a check valve (not shown) may be further provided on the branch pipe 31, the check valve being provided between the ozone generating device 70 and the air intake pipe 30, and the allowable direction of the check valve is a direction from the ozone generating device 70 to the air intake pipe 30 to prevent water channeling.

In one embodiment, the air inlet pipe 30 may be a small-bore pipe, such as a capillary pipe, when the multiway valve 10 is at the target station, a corresponding flow channel is formed inside, so that the cleaning liquid enters the multiway valve 10 from the water inlet, when passing through the flow channel inside the valve, due to the diameter change of the large and small pipe apertures, a siphon force is generated on the capillary pipe, and the outside air can enter the multiway valve 10 through the capillary pipe under the siphon force to be mixed with the liquid in the multiway valve 10 to form a gas-liquid mixture for cleaning the filter material.

As shown in fig. 6, a schematic view of the air intake principle in one embodiment is provided. The multi-way valve is characterized in that L represents a corresponding flow channel formed inside the multi-way valve when the multi-way valve is located at a target station, a represents liquid, b represents air, m represents gas-liquid mixed liquid, when the liquid a flows through the flow channel L, siphon force is generated on the air inlet pipeline 30, and the air b enters the flow channel L through the air inlet pipeline 30 under the action of siphon force and is mixed with the liquid a in the flow channel L to form the gas-liquid mixed liquid m.

In one embodiment, the branch pipe 31 is also a small-bore pipe, such as a capillary, and the ozone generated by the ozone generating device 70 can enter the air inlet pipe 30 through the capillary under the action of siphon force to be mixed with the air in the air inlet pipe 30 to form an ozone-air mixture, and the ozone-air mixture enters the multi-way valve 10 through the capillary under the action of siphon force to be mixed with the liquid in the multi-way valve 10 to form a gas-liquid mixture for cleaning the filter material.

As shown in fig. 7, a schematic view of the air intake principle in one embodiment is provided. The multi-way valve comprises a multi-way valve body, a multi-way pipeline 30, a branch pipeline 31, an air b, an air inlet pipeline 30, an ozone-air mixed liquid, a liquid A, an ozone-air mixed gas and a liquid A, wherein the multi-way valve body is located in a target station, the liquid A is located in the corresponding flow channel, the liquid A is located in the target station, the liquid A is located in the flow channel, the air A is located in the flow channel, the liquid A is located in the branch pipeline 31, the air B enters the air inlet pipeline 30 through the branch pipeline 31, the ozone C is located in the air inlet pipeline 30, the air B and the ozone-air C are mixed in the flow channel, the ozone-air mixed gas B and the ozone-air mixed gas C are located in the flow channel, and the liquid A is located in the flow channel, the air A is located in the multi-air A, the multi-air is located in the target station, the multi-air A, the multi-air is located in the flow channel, the multi-air is located in the multi-air, the multi-air is located in the target station, the multi-air is located in the flow channel, the multi-air is located in the multi-air, the multi-air is located in the multi-way, the multi-air is located in the multi-way, the multi-way valve body, the multi-air is located in the multi-way, the multi-way valve body, the multi-way.

In one embodiment, the lengths of the inlet conduit 30 and the branch conduit 31 may be controlled to meet the connection of the relevant components, without requiring an excessively long conduit, to prevent the bubbles generated by the siphon from being gathered into the gas flow.

In one embodiment, as shown in fig. 1 to 5, an upper water distributor 21, a central pipe 22 and a lower water distributor 23 are arranged in the main chamber 20, two ends of the central pipe 22 are respectively connected with the multi-way valve 10 and the lower water distributor 23, and the upper water distributor 21 is connected with the multi-way valve 10. The multi-way valve 10 is also provided with a water producing port 13 and a waste water port 14, and different flow passages are formed in the multi-way valve 10 when the multi-way valve is switched to different stations.

In one embodiment, when the multi-way valve 10 is located at the bubble assisted cleaning station and the bubble assisted cleaning is back cleaning, the gas-liquid mixture for cleaning the filter material enters the central pipe 22 through the multi-way valve 10, reaches the lower water distributor 23 through the central pipe 22, and enters the main chamber 20 through the lower water distributor 23 to clean the filter material, and the generated waste liquid enters the multi-way valve 10 through the upper water distributor 21 and is discharged through the waste water outlet 14. Therefore, in the backwashing state, the gas-liquid mixture for cleaning the filter material is diffused into the main cavity 20 by the lower water distributor 23, the filter material is cleaned from bottom to top, and the generated waste liquid is collected by the upper water distributor 21 and then discharged from the waste water port 14.

In one embodiment, when the multiway valve 10 is located at the bubble assisted cleaning station and the bubble assisted cleaning is positive cleaning, the gas-liquid mixture for cleaning the filter material enters the upper water distributor 21 through the multiway valve 10 and enters the main chamber 20 through the upper water distributor 21 to clean the filter material, and the generated waste liquid enters the central tube 22 through the lower water distributor 23, enters the multiway valve 10 through the central tube 22 and is discharged through the waste water outlet 14. Therefore, in the state of positive cleaning, the gas-liquid mixture for cleaning the filter material is diffused by the upper water distributor 23 into the main cavity 20 to clean the filter material from top to bottom, and the generated waste liquid is collected by the lower water distributor 21 and then discharged from the waste water port 14.

In one embodiment, the bubble assisted cleaning step may be performed before the backwashing step, so as to loosen, carry out and partially remove the contaminants on the surface of the filter material, between the filter materials and inside the filter material particles by means of the generated micro-nano bubbles. After the air bubble auxiliary cleaning step is finished, the backwashing step takes out loosened pollutants, and meanwhile, the backwashing can form inter-particle collision friction to perform secondary cleaning on the pollutants on the surface of the filter material. Compared with independent backwashing, the cleaning effect of the combination of bubble auxiliary cleaning and backwashing is better, and the service life of the filter material can be effectively prolonged.

In one embodiment, the operation procedure of the water purifying apparatus may include: water supply, bubble auxiliary cleaning, backwashing, forward washing and water supply. The controller 60 controls the on-off state of the electromagnetic valve 52, so that the water leakage problem during the station switching of the multi-way valve 10 is solved. The specific control logic may be as follows: in the process that the multi-way valve 10 is switched from the water supply station to the bubble auxiliary cleaning station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be opened; in the process that the multi-way valve 10 is switched from the bubble auxiliary cleaning station to the backwashing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the backwashing station to the forward washing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the forward washing station to the water supply station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed.

In another embodiment, the bubble assisted cleaning step may also be after the backwashing step, and the operation procedure of the water purification apparatus may include: water supply, backwashing, bubble auxiliary cleaning, forward washing and water supply. The controller 60 controls the on-off state of the electromagnetic valve 52, so that the water leakage problem during the station switching of the multi-way valve 10 is solved. The specific control logic may be as follows: in the process that the multi-way valve 10 is switched from the water supply station to the backwashing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the backwashing station to the bubble auxiliary cleaning station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be opened; in the process that the multi-way valve 10 is switched from the bubble auxiliary cleaning station to the normal cleaning station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the forward washing station to the water supply station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed.

In another embodiment, the bubble assisted cleaning step can be between two backwashing steps, and the operation program of the water purification device can include: water supply, backwashing, bubble auxiliary cleaning, backwashing, forward washing and water supply. The controller 60 controls the on-off state of the electromagnetic valve 52, so that the water leakage problem during the station switching of the multi-way valve 10 is solved. The specific control logic may be as follows: in the process that the multi-way valve 10 is switched from the water supply station to the backwashing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the backwashing station to the bubble auxiliary cleaning station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be opened; in the process that the multi-way valve 10 is switched from the bubble auxiliary cleaning station to the backwashing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the backwashing station to the forward washing station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed; in the process that the multi-way valve 10 is switched from the forward washing station to the water supply station, the controller 60 controls the electromagnetic valve 52 to be closed, and after the multi-way valve is switched in place, the controller 60 controls the electromagnetic valve 52 to be closed.

In the above embodiment, the solenoid valve 52 is in the closed state during the switching of the stations of the multi-way valve 10, so that the problem of water leakage can be prevented. When the multi-way valve 10 is in a working position where gas is not required to be introduced, the electromagnetic valve 52 is in a normally closed state; when the multi-way valve 10 is in the bubble assist purge position, the solenoid valve 52 is open, and gas is introduced and bubbles are generated to assist in purging. The operation procedure of the water purification apparatus is not limited to the above embodiment, and other embodiments are possible, including the bubble assisted cleaning step, and the operation procedure is not limited thereto.

In one embodiment, when the multi-way valve 10 is in the backwashing position, water for cleaning filter materials enters the multi-way valve 10 from the water inlet 12, enters the central pipe 22 through the multi-way valve 10, reaches the lower water distributor 23 through the central pipe 22, and enters the main chamber 20 through the lower water distributor 23 to clean the filter materials, and generated waste liquid enters the multi-way valve 10 through the upper water distributor 21 and is discharged through the waste water outlet 14.

In one embodiment, when the multi-way valve 10 is in the forward washing station, water for cleaning the filter media enters the multi-way valve 10 from the water inlet 12, enters the upper water distributor 21 through the multi-way valve 10, enters the main body 20 through the upper water distributor 21 to clean the filter media, and the generated waste liquid enters the central pipe 22 through the lower water distributor 23, enters the multi-way valve 10 through the central pipe 22, and is discharged through the waste water outlet 14.

In one embodiment, when the multi-way valve 10 is in the water supply station, the water to be purified enters the multi-way valve 10 from the water inlet 12, enters the upper water distributor 21 through the multi-way valve 10, enters the main cavity 20 through the upper water distributor 21, is purified by the filter material, enters the central tube 22 through the lower water distributor 23, enters the multi-way valve 10 through the central tube 22, and is discharged through the water producing port 13.

It should be understood that the terms "first", "second", etc. in the above-described embodiments are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. For the description of numerical ranges, the term "plurality" means more than one, i.e. equal to or greater than two.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A water purification apparatus, comprising: a multiway valve and a main chamber, the multiway valve coupled to the main chamber and in fluid communication with an inner chamber of the main chamber, the multiway valve having an air inlet and a water inlet; when the multi-way valve is positioned at a target station, gas enters the multi-way valve through the gas inlet, liquid enters the multi-way valve through the water inlet, the gas and the liquid are mixed in the multi-way valve, and formed gas-liquid mixed liquid enters the main cavity through the multi-way valve.

2. The apparatus of claim 1, further comprising: and the air inlet pipeline is used for communicating the air inlet with the outside.

3. The apparatus of claim 2, further comprising: a perforated element through which the air inlet duct communicates with the outside.

4. The apparatus of claim 3, wherein the apertured element is an aerator.

5. The apparatus of claim 3, further comprising: and the water stopping piece is arranged on the air inlet pipeline.

6. The apparatus of claim 5, wherein the water stop is a one-way valve.

7. The apparatus of claim 5, wherein the water stop is connected to a controller, the controller controls the on-off state of the water stop, and the water stop is a solenoid valve or an electric ball valve.

8. The apparatus according to any one of claims 1 to 7, wherein an upper water distributor, a central pipe and a lower water distributor are arranged in the main chamber, two ends of the central pipe are respectively connected with the multi-way valve and the lower water distributor, and the upper water distributor is connected with the multi-way valve.

9. The apparatus of claim 8, wherein the multiplex valve further has a waste port; when the multi-way valve is positioned at a target station, the gas-liquid mixed liquid enters the central pipe through the multi-way valve, reaches the lower water distributor through the central pipe, enters the main cavity through the lower water distributor to clean filter materials, and generated waste liquid enters the multi-way valve through the upper water distributor and is discharged through the waste water outlet.

10. The apparatus of claim 8, wherein the multiplex valve further has a waste port; when the multi-way valve is positioned at a target station, the gas-liquid mixed liquid enters the upper water distributor through the multi-way valve and enters the main cavity through the upper water distributor to clean the filter material, and the generated waste liquid enters the central pipe through the lower water distributor, enters the multi-way valve through the central pipe and is discharged through the waste water outlet.

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