CN204981372U - Water purifier filter element annotates liquid belt cleaning device - Google Patents

Abstract

The utility model discloses a liquid injection cleaning device for a filter element of a water purifier. The liquid injection cleaning device is composed of a cleaning liquid storage tank with a built-in liquid level sensor and a combination valve. The opening and closing of the combination valve controls the injection of the cleaning liquid, and has Adjustment function of cleaning fluid injection volume. The liquid injection cleaning device is placed at the front end of the pressure pump of the water purifier, and the membrane filter element at the rear end of the pressure pump is injected and cleaned, and the cleaning liquid can also flow into the pretreatment at the front end of the liquid injection cleaning device through the membrane filter concentrated water return branch The filter element is injected and cleaned. The utility model can effectively improve the cleaning efficiency of the filter element, delay the fouling speed of the filter element, thereby prolong the service life of the filter element, reduce backwashing frequency, reduce waste water discharge, and realize water saving and emission reduction.

Description

A water purifier filter element injection cleaning device

technical field

The utility model belongs to the technical field of water treatment by a reverse osmosis membrane method, in particular to a liquid injection cleaning device for a filter element of a water purifier.

Background technique

As people pay more and more attention to food safety and health issues, the quality of drinking water has gradually attracted the attention of urban residents. The use of water purifiers provides people with a solution to drinking water healthily.

Reverse osmosis membrane technology is currently the mainstream method of drinking water treatment. Water purification equipment usually consists of three parts: raw water pretreatment, reverse osmosis purification and pure water supply. In order to prolong the service life of the filter element, most of the current water purifiers adopt the backwashing method, but there is inevitably the problem of fouling of the filter element due to incomplete cleaning, resulting in secondary pollution, so that the water purification efficiency of the filter element in the second half of its service life is remarkable. Reduced; water purification equipment that uses water quality monitoring as backwash control information has significantly increased the frequency of backwash, and the wastewater discharge rate has increased, resulting in a rapid decline in raw water utilization.

Due to the above-mentioned technical defects in the prior art, it is a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a filter element cleaning device for water purifiers, which solves the problem of incomplete cleaning of the filter element in reverse osmosis water purification equipment, so as to delay the fouling speed of the filter element.

The utility model is achieved in that:

A water purifier filter element injection cleaning device, mainly including a raw water inlet pipe, a pretreatment filter, a low pressure switch, an ultrafiltration filter, a liquid injection cleaning device, a pressure pump, a membrane filter, a high pressure switch, a post filter, A water storage bucket and a water outlet tap, the bottom end of the pretreatment filter is connected to the raw water inlet pipe, the top end of the pretreatment filter is connected to the ultrafiltration filter through a hose, and a There is a low-pressure switch, the top of the ultrafiltration filter is connected to a liquid injection cleaning device, the liquid injection cleaning device is connected to the membrane filter, and a pressure pump is arranged between the liquid injection cleaning device and the membrane filter, and the liquid injection cleaning device is connected to the membrane filter. The bottom end of the membrane filter is respectively connected to the rear filter and the water storage tank through a hose, a high-pressure switch is provided on the hose, and a water outlet tap is provided behind the rear filter;

The liquid injection cleaning device includes a first liquid injection combination valve, a cleaning liquid storage cylinder and a liquid level sensor, the first liquid injection combination valve is arranged on a connecting hose, and the cleaning liquid storage cylinder is connected to the first injection liquid combination valve, and a liquid level sensor is arranged on the cleaning liquid storage cylinder.

Preferably, it also includes a throttle valve, a second liquid injection combination valve and a drain valve, the bottom of the ultrafiltration filter is provided with a second liquid injection combination valve, and the bottom of the membrane filter is connected to the second liquid injection valve through a return hose. The liquid injection combination valve, the extension end of the return hose is respectively connected to the drain valve and the throttle valve, and the throttle valve is connected to the water inlet hose of the ultrafiltration filter.

The liquid injection cleaning device is composed of a cleaning liquid storage tank and a first liquid injection combination valve connected thereto. The cleaning liquid storage cylinder is placed vertically, with a cleaning liquid addition port above it, and a cleaning liquid discharge port and a liquid level sensor below it. The liquid level sensor is used to monitor the cleaning liquid storage in the cylinder to warn and add cleaning liquid in time. The liquid injection combination valve has a T-shaped three-way structure, and the cleaning liquid inlet is arranged on the side of the water purification passage; after the cleaning liquid enters from the inlet, it passes through the injection hole below the moving iron core of the combined valve and the water purification passage. The opening and closing are controlled by electromagnetic signals; the other side opposite to the injection hole is provided with a liquid injection volume adjustment screw plug, and the injection flow rate of the injection hole can be adjusted by adjusting the screwing position of the screw plug core. The discharge outlet of the washing liquid storage is connected to the cleaning liquid inlet of the first combined liquid injection valve.

The liquid injection cleaning device is connected to the water flow channel of the water purifier through the water inlet and outlet of the combined valve body water purification channel, its front end is connected to the outlet of the raw water pretreatment filter, and its rear end is connected to the membrane filter after passing through the pressure pump . When the membrane filter needs to be cleaned, the combined valve moving iron core opens the injection hole, and the cleaning liquid is sucked into the water channel through the pressure difference provided by the pressure pump, reaches the membrane filter and is cleaned. If the concentrated water outlet of the membrane filter is connected to the front end of the raw water pretreatment filter element through the return branch, the cleaning liquid can also reach the pretreatment filter element and rinse it.

The cleaning solution used in the liquid injection cleaning device is prepared according to the properties of the fouling pollutants. For example, common scaling pollutants include carbonate pollution caused by excessive water hardness, metal deposits oxidized by residual chlorine, some organic suspended solids, and microbial contamination; cleaning solutions include DTA disodium salt lotion, hydrochloric acid washing solution, citric acid lotion, etc.

The beneficial effects of the utility model are:

By adding a liquid injection cleaning device and its control valve body and applying it to an appropriately improved water purification circuit, the active cleaning of the filter element of the water purifier is realized, so as to delay the fouling speed of the filter element, improve the utilization rate and service life of the filter element, and ensure the water purification equipment efficient work.

According to the above content, the water purification equipment with liquid injection cleaning device has the following characteristics: (1) According to the different scaling properties of water quality, different cleaning liquids can be flexibly prepared to achieve effective cleaning; (2) The cleaning efficiency of the filter element is improved, Effectively delay the fouling speed of the filter element and prolong the service life of the filter element; (3) Reduce the speed of the purified water being polluted by scaling, and the frequency of backwashing and waste water discharge are reduced accordingly, achieving a certain degree of water saving and emission reduction.

Description of drawings

Fig. 1 is the structural representation of a water purifier embodiment of the present utility model;

Fig. 2 is a structural schematic diagram of the combined liquid injection valve part of the liquid injection cleaning device of the present invention;

Fig. 3 is a partial cross-sectional view of the liquid injection combined valve part of the present invention;

Fig. 4 is a cross-sectional view of the liquid injection combination valve part of the present invention;

In Figure 1: 1 is the raw water inlet pipe, 2 is the pretreatment filter, 3 is the low pressure switch, 4 is the ultrafiltration filter, 5 is the throttle valve, 6 is the drain valve, 7 is the first liquid injection combination valve, 8 is the cleaning liquid storage tank, 9 is the liquid injection cleaning device, 10 is the second liquid injection combination valve, 11 is the liquid level sensor, 12 is the pressure pump, 13 is the membrane filter, 14 is the high pressure switch, 15 is the post filter Device, 16 are water storage barrels, and 17 are water outlet taps.

In Figure 2-4: 701 is the valve body, 702 is the sealing ring, 703 is the water-proof sleeve, 704 is the moving iron core, 705 is the coil, 706 is the fixed iron core, 707 is the screw, 708 is the terminal, 709 is the spring , 710 is a sealing rubber head, 711 is a sealing gasket, 712 is an injection volume adjustment screw plug, 713 is a screw plug core, 714 is a cleaning liquid inlet, 715 is a clean water passage, and 716 is a cleaning liquid injection hole.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Figures 1-4 show a water purifier filter element injection cleaning device of the present invention, which mainly includes a raw water inlet pipe 1, a pretreatment filter 2, a low pressure switch 3, an ultrafiltration filter 4, and a liquid injection cleaning device 9. Pressure pump 12, membrane filter 13, high pressure switch 14, post filter 15, water storage tank 16 and water outlet tap 17, the bottom end of the pretreatment filter 2 is connected to the raw water inlet pipe 1, and the pretreatment filter 2. The top end of the ultrafiltration filter 4 is connected to the ultrafiltration filter 4 through a hose. A low pressure switch 3 is provided between the pretreatment filter 2 and the ultrafiltration filter 4. The top end of the ultrafiltration filter 4 is connected to a liquid injection cleaning device 9. The liquid injection cleaning device 9 is connected to the membrane filter 13, a pressure pump 12 is arranged between the liquid injection cleaning device 9 and the membrane filter 13, and the bottom ends of the membrane filter 13 are respectively connected to the rear through a hose. A filter 15 and a water storage bucket 16 are provided with a high-pressure switch 14 on the hose, and a water outlet tap 17 is provided behind the rear filter 15;

The liquid injection cleaning device 9 includes a first liquid injection combined valve 7, a cleaning liquid storage tank 8 and a liquid level sensor 11, the first liquid injection combined valve 7 is arranged on a connecting hose, and the cleaning liquid storage The cylinder 8 is connected to the first combined liquid injection valve 7 , and the cleaning fluid storage cylinder 8 is provided with a liquid level sensor 11 .

Furthermore, it also includes a throttle valve 5, a second liquid injection combination valve 10 and a drain valve 6, the bottom of the ultrafiltration filter 4 is provided with a second liquid injection combination valve 10, and the bottom of the membrane filter 13 passes through the back flow A hose is connected to the second liquid injection combination valve 10, and the extension end of the return hose is respectively connected to the drain valve 6 and the throttle valve 5, and the throttle valve 5 is connected to the water inlet hose of the ultrafiltration filter 4 .

In the embodiment provided by the utility model, the raw water flows into the ultrafiltration filter 4 through the pre-filter 2 and the low pressure switch 3, and the clean water outlet of the ultrafiltration filter 4 is connected by a liquid injection cleaning device 9 and a pressure pump 12. Membrane filter 13, the clean water outlet of membrane filter 13 is connected to outlet tap 17 through high pressure switch 14 and post filter 15; Connect the water inlet of the ultrafiltration filter 4 with the throttle valve 5 to form a return flow branch; the concentrated water outlet of the ultrafiltration filter 4 is connected to the cleaning liquid inlet of the second liquid injection combination valve 10 to form the outlet of the ultrafiltration filter 4 The flushing discharge switch; the second liquid injection combination valve 10 and the throttle valve 5 are connected to the water outlet pipe and the drain valve 6 to form a waste water discharge branch.

In the embodiment given according to the present utility model, the liquid injection cleaning device 9 is built with a first liquid injection combination valve 7 and a cleaning liquid storage cylinder 8 . The structures of liquid injection combination valves 7 and 10 are shown in FIG. 2 . The clean water channel 715 constitutes the water inlet and outlet of the cleaning device 9; the liquid level sensor 11 is built in the cleaning liquid storage cylinder 8 to monitor the remaining situation of the cleaning liquid; The cleaning liquid inlet 714 of the first combined liquid injection valve 7 . After the cleaning liquid inlet 714 enters, it passes through the injection hole 716 below the moving iron core 704 and connects with the clean water passage 715; the first combined liquid injection valve 7 is a normally closed solenoid valve, and the moving iron core 704 passes through the sealing valve under the action of the spring force when the power is off. The glue head 710 blocks the cleaning liquid injection hole 716; the other side opposite to the cleaning liquid injection hole 716 is provided with a liquid injection volume adjustment screw plug 712, which is connected with a screw plug core 713 through a pipe thread, and adjusts the screw plug core 713 screwing position The flow of cleaning fluid can be adjusted.

When the water purifier according to the embodiment of the utility model works normally, the water flows through the pipeline through the pre-filter 2 and enters through the low pressure switch 3, the ultrafiltration filter 4, the pressure pump 12, the membrane filter 13 and the high pressure switch 14. When the water storage tank 16 is full, the high-pressure switch 14 is turned on to cut off the pressure pump 12. After the tap 17 is discharged and the pressure is reduced, the high-pressure switch 14 is closed to connect the pressure pump 12; when the pressure pump 12 is turned on, the concentrated water of the membrane filter 13 is refluxed The branch circuit is recycled; when the water purifier works normally, the first liquid injection combination valve 7, the second liquid injection combination valve 10 and the drain valve 6 are all closed.

When the water purifier according to the embodiment provided by the utility model cleans the membrane filter 13, the first liquid injection combination valve 7 and the drain valve 6 are opened, the pressure pump 12 is energized, and the cleaning liquid is mixed into the waterway, and the membrane filter 13 is rinsed. After that, it is discharged through the second liquid injection combination valve 10 and the drain valve 6; when the second liquid injection combination valve 10 is opened simultaneously, the cleaning solution enters the ultrafiltration filter 4 by controlling the closure of the drain valve 6, thereby completing the ultrafiltration filter 4. Active cleaning.

According to the embodiment of the utility model, the water purifier closes the first liquid injection combination valve 7 after liquid injection cleaning, and utilizes the raw water after pretreatment to backwash for a time interval appropriately to discharge the cleaning solution.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (2)

1. A water purifier filter element injection cleaning device, characterized in that it mainly includes a raw water inlet pipe, a pretreatment filter, a low pressure switch, an ultrafiltration filter, a liquid injection cleaning device, a pressure pump, a membrane filter, and a high pressure switch , a post-filter, a water storage tank and a faucet, the bottom of the pre-treatment filter is connected to the raw water inlet pipe, the top of the pre-treatment filter is connected to the ultra-filtration filter through a hose, and the pre-treatment filter and the ultra-filtration A low pressure switch is provided between the filter filters, the top of the ultrafiltration filter is connected to a liquid injection cleaning device, the liquid injection cleaning device is connected to the membrane filter, and a There is a pressure pump, the bottom end of the membrane filter is respectively connected to the rear filter and the water storage bucket through a hose, a high pressure switch is provided on the hose, and a water outlet tap is provided behind the rear filter; The liquid injection cleaning device includes a first liquid injection combination valve, a cleaning liquid storage cylinder and a liquid level sensor, the first liquid injection combination valve is arranged on a connecting hose, and the cleaning liquid storage cylinder is connected to the first injection liquid combination valve, and a liquid level sensor is arranged on the cleaning liquid storage cylinder. 2. The water purifier filter element injection cleaning device according to claim 1, characterized in that: it also includes a throttle valve, a second liquid injection combination valve and a drain valve, and the bottom of the ultrafiltration filter is provided with a second injection valve. liquid combination valve, the bottom of the membrane filter is connected to the second liquid injection combination valve through a return hose, and the extension end of the return hose is respectively connected to a drain valve and a throttle valve, and the throttle valve is connected to the ultrafiltration valve. Filter inlet hose.