CN211836602U

CN211836602U - Mutual back-flushing full-automatic water purification pre-filter

Info

Publication number: CN211836602U
Application number: CN201922148980.0U
Authority: CN
Inventors: 黄光瑜
Original assignee: Nanping Yunsheng High And New Technology Development Co ltd
Current assignee: Nanping Yunsheng High And New Technology Development Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-11-03
Anticipated expiration: 2029-12-04

Abstract

The utility model provides a mutual back flush full-automatic water purification prefilter (see abstract attached drawing), it is parallelly connected by two filters 1a and 2a and constitutes, and the water inlet of two filters is connect one normally open solenoid valve 1b and 2b respectively, and the drain connects one normally closed solenoid valve 1c and 2c respectively, and four solenoid valves can set up 1a or 2 a's operating condition under electronic controller's control, and 1a, 2 a's operating condition has two kinds, promptly: a water supply state and a flushed state. When the filters need to be cleaned, mutual backwashing is executed under the control of the controller. The mutual back-flushing beneficial effects are: raw water which is not filtered can be prevented from entering a rear-stage water purification system; the sediment in the filter can be washd more effectively to the back flush, and entire system is high-efficient and intelligent, has opened up wider prospect for the application of water purifier.

Description

Mutual back-flushing full-automatic water purification pre-filter

Technical Field

The utility model relates to a water purification field, especially in the aspect of domestic water purifier.

Background

At present, the sanitary conditions of drinking tap water in rural areas are poor, local mountain stream water is basically directly introduced and used, the purification facilities are extremely simple and crude, the drinking tap water is generally used as a water storage tank and a sedimentation tank, and the conditions are better, the drinking tap water can be independently used as a sedimentation tank, a filter tank, a disinfection tank and the like. People can only drink the tea just by changing the state without any method, and the health of people is greatly harmed. Some people can add the water purifier to drink after filtering, but the current water purifier products are not suitable for rural water quality, such as: the water purifiers sold in the market generally comprise multistage filters such as a PP cotton filter element, an active carbon filter element, a high-precision filter element (namely, a ceramic filter element, a hollow fiber ultrafiltration membrane, an RO reverse osmosis membrane and the like). The water purifier is more suitable for urban tap water but not suitable for the water quality of rural tap water, and the filter element is easy to block due to the fact that the rural tap water contains large silt. The multi-stage filter element water purifier is troublesome because the filter elements are frequently disassembled and cleaned or replaced, so that most people do not wash and replace the filter elements for a long time until the filter elements are blocked and water cannot flow out, the service life of the water purifier is short when the water purifier is used, and secondary pollution of water is caused. Therefore, even if the water quality is poor in rural areas, people are not willing to use the water purifier.

In order to solve the problems, the common technical scheme is to realize automatic cleaning, too many filtering stages cannot be designed for reducing the difficulty of automatic cleaning, but no matter how the filtering stages are reduced, a pre-filter cannot be lacked, and because the introduction of tap water cannot avoid the entering of impurities such as silt, rust and large-particle organic matters, the entering of the large-particle impurities can damage a rear-stage high-precision filter element. A perfect water purification system, the pre-filter is indispensable. This in turn causes difficulties in cleaning the pre-filter, which is more difficult for the filter element of the pre-filter because of the first bank of the filter, which has a large amount of dirt and is easily inserted into the tiny holes of the filter element, so that the filter element is easily clogged. Dirt adheres to the holes of the filter element, so that the adhesion force is enhanced, and the dirt is difficult to remove without applying external force.

Disclosure of Invention

In order to solve the automatic washing problem of the water purification prefilter, the utility model provides a mutual back flush technical scheme, promptly: when cleaning, firstly setting one filter as water supply state and the other filter as washed state, making the water from the filter in water supply state back flush the filter in washed state, after washing for a certain time, making the working states of the two filters interchange, and executing the washing of the other filter, so as to achieve the purpose of mutual back flush; during normal working state, the two filters are set to be in a water supply state, and the two filters work in parallel to serve as a post-stage water purification system to provide a pre-filtered water source.

The working principle is (as shown in figure 1): the device is formed by connecting two

filters

1a and 2a in parallel, wherein a water inlet of the filter 1a is connected with a normally open electromagnetic valve 1b, and a sewage outlet is connected with a normally closed electromagnetic valve 1 c; a water inlet of the filter 2a is connected with a normally open electromagnetic valve 2b, and a sewage outlet is connected with a normally closed electromagnetic valve 2 c; the lead wires of the four

electromagnetic valves

1b, 1c, 2b and 2c are respectively connected to an electronic automatic controller, and the electronic automatic controller opens or closes each electromagnetic valve under the control of a program; when the

solenoid valves

1b and 1c are set to be in a low level and the solenoid valves 2b and 2c are set to be in a high level, the filter 1a is set to be in a water supply state, the filter 2a is set to be in a flushing state, water flow is sent from the outlet of the solenoid valve 1a to the outlet end of the solenoid valve 2a, enters the filter element of the solenoid valve 2a and then flows out of the drain outlet of the solenoid valve 2a, and backwashing on the solenoid valve 2a is realized; when the

solenoid valves

1b and 1c are set to be high level and the solenoid valves 2b and 2c are set to be low level, the filter 2a is set to be in a water supply state, the filter 1a is set to be in a flushing state, water flow is sent from the outlet of the solenoid valve 2a to the outlet end of the solenoid valve 1a, enters the filter element of the solenoid valve 1a and then flows out of the drain outlet of the solenoid valve 1a, and backwashing on the solenoid valve 1a is realized; when the

solenoid valves

1b, 1c, 2b and 2c are all set to low level, the

filters

1a and 2a are both in water supply state, and the two filters work in parallel to supply water as a post-stage water purification system.

The mutual back-flushing beneficial effects are: the flushing water is filtered water, so that raw water cannot enter a rear-stage water purification system, and a rear-stage filter element and water using equipment can be effectively protected; the back washing can effectively clean away the sludge in the pre-filter, and the dirt attached to the filter element can be easily flushed out due to the reverse pressure action of water; the washing is automatically completed under the control of the electronic controller, thereby avoiding manual washing, improving the intelligent level of the water purifier and the service life of the filter element, and opening up wider prospects for the application of the water purifier.

Drawings

Fig. 1 is a working principle diagram of the present invention. In the figure, 1a and 2a are two prefilters; 1b and 2b are two normally open electromagnetic valves which respectively control the water inlets of the 1a and the 2 a; 1c and 2c are two normally closed electromagnetic valves which respectively control the sewage outlets of 1a and 2 a; the reference numeral 3 is a water inlet of the pre-filter, 4 is a water outlet, and 5 and 6 are sewage outlets. "→" indicates the direction of water flow.

Fig. 2 is a view showing a state of cleaning of the filter of fig. 2 a. Applying the filtered water of 1a, performing a backwash on 2a, "→" indicates the current water flow direction.

FIG. 3 is a view showing a state where the filter 1a is cleaned. Backwash was applied to 1a using 2a filtered water, "→" indicating the current water flow direction.

Detailed Description

The pre-filter is assembled according to fig. 1, the main components being: the precision of the two stainless steel net type prefilters is generally 50-500um, and the two stainless steel net type prefilters are two normally open electromagnetic valves and two normally closed electromagnetic valves; a plurality of pipes are manufactured, and one electronic controller is manufactured. The electronic controller takes a single chip microcomputer as a core and is provided with an input and output interface, such as a display output port, a flushing mode parameter input port, a control output port and the like. The controller is the control center of the whole water purification system, the novel water purification system only relates to the part of the pre-filter, so only two output control lines are introduced into the novel water purification system, one is connected with 1b and 1c in the 1a filter, and the other is connected with 2b and 2c in the 2a filter. When 1b and 1c in the filter 1a are switched on, 1b is closed, 1c is opened, water flows out from the outlet of the filter 2a, flows in from the water outlet of 1a in a reverse mode, and flows out from the sewage outlet of 1a, and dirt deposited on the filter screen is washed away by the filter 1a under the reverse action of the water flow. Conversely, when 2b and 2c in the 2a filter are switched on, 2b is closed, 2c is opened, the water flow flows out from the 1a filter outlet, flows in from the 2a water outlet and flows out from the 2a sewage outlet, and the 2a filter washes away the dirt deposited on the filter screen under the reverse action of the water flow. The two filters are alternately back flushed under the control of the controller, and the flushing time and frequency are completely controlled by a program set by the electronic controller. In order to effectively wash away dirt deposited on the filter screen, a control signal for washing can be set to be pulse type, so that the control signal controls the water pressure to be strong or weak, and thus, attachments can be more easily separated and washed away under the pulse impact of water.

This is novel has solved the problem that leading filter was automatic to be washed well, as one of the indispensable equipment of water purification system, more can the wide application in water purification field.

Claims

1. The utility model provides a mutual back flush full-automatic leading filter which characterized by: the automatic sewage draining system is formed by connecting a filter 1a and a filter 2a in parallel, wherein a water inlet of the filter 1a is connected with a normally open electromagnetic valve 1b, a sewage draining port is connected with a normally closed electromagnetic valve 1c, a water inlet of the filter 2a is connected with a normally open electromagnetic valve 2b, a sewage draining port is connected with a normally closed electromagnetic valve 2c, lead wires of the normally open electromagnetic valve 1b, the normally closed electromagnetic valve 1c, the normally open electromagnetic valve 2b and the normally closed electromagnetic valve 2c are respectively connected into an electronic automatic controller, and the electronic automatic controller opens or closes each electromagnetic valve under the;

when the normally open solenoid valve 1b and the normally closed solenoid valve 1c are set to a low level and the normally open solenoid valve 2b and the normally closed solenoid valve 2c are set to a high level, the filter 1a is set to a water supply state and the filter 2a is set to a flushing state, so that the filter 1a performs backwashing on the filter 2 a;

when the normally open solenoid valve 1b and the normally closed solenoid valve 1c are set to a high level and the normally open solenoid valve 2b and the normally closed solenoid valve 2c are set to a low level, the filter 2a is set to a water supply state and the filter 1a is set to a flushing state, so that the filter 2a performs backwashing on the filter 1 a;

when the normally open solenoid valve 1b, the normally closed solenoid valve 1c, the normally open solenoid valve 2b and the normally closed solenoid valve 2c are all set to be at low level, the filter 1a and the filter 2a are both in a water supply state, and the two filters work in parallel to supply water as a later-stage water purification system.