CN217431018U - Pre-filter for UF/RO system - Google Patents

Abstract

The utility model relates to a filter technical field just discloses a be used for UF RO system prefilter, including the water inlet, the inside movable spiral that is provided with of water inlet, movable spiral outside is provided with the coarse filter, and the coarse filter outside is provided with the fine filter, and the water inlet both ends are provided with the spiral supporting seat, and the water inlet right-hand member is provided with the blowoff valve. This a leading filter for UF RO system, the filter design is simple high-efficient, can effectively reduce the manufacturing cost of filter, through the internal design of filter, utilize the gravity of impurity, buoyancy, the effect of centrifugal force, realize the step of impurity and filter, effectively prolong the life cycle of filter, water is under the whirl state, through the cleaning action of rotating the spiral, effectively reduce the condition that impurity blockked up the surface of water and take place, guarantee the water yield, because structural design is simple, can adjust filter and filter core diameter as required.

Description

A pre-filter for UF/RO system

technical field

The utility model relates to the technical field of filters, in particular to a pre-filter used in a UF/RO system.

Background technique

The UF/RO water inlet system is generally equipped with a front filter. Considering the continuity of the water inlet, the filter generally adopts various types of filters such as "bag type", "drum type" and "bag type". The type rotating brush removes impurities on the inner wall of the filter element. Generally, water enters from the inside of the filter element, and after passing through the filter screen, water comes out from the outside. The inside of the filter element removes the impurities trapped on the inner wall of the filter element by rotating the rotating brush. The brush realizes the cleaning of impurities, and the pressure gauge is installed at the inlet and outlet ends of the filter element. Through the feedback of the differential pressure signal, the automatic opening and closing of the control valve is driven to realize the automatic cleaning of the filter.

Although the existing filter can achieve the filtering function, it cannot guarantee the long-term stable operation of the filter due to structural design reasons, and various faults such as frequent blockage and small water flow occur, such as: the rotating brush is not cleaned properly, and the filter element is often blocked, which affects the filter. Water volume requires frequent manual intervention and cleaning, and requires external electrical and automatic control systems to achieve regular cleaning. It is difficult to effectively improve the filtration precision. For large water volumes, the filtration precision is difficult to achieve below 1mm. The amount of water and the filtering effect are difficult to guarantee.

Therefore, there is an urgent need for a pre-filter for UF/RO system to solve the problems of frequent blockage, small water flow, inability to improve filtration accuracy, and inability to achieve cascade filtration according to the shape and weight of impurities.

Utility model content

(1) Technical problems solved

In view of the deficiencies of the prior art, the utility model provides a pre-filter for UF/RO system, which has the advantages of anti-clogging, large water flow, improved filtration precision, and can realize cascade filtration according to the shape and weight of impurities. The problems mentioned in the background art mentioned above are frequently blocked, the water flow is small, the filtration precision cannot be improved, and the step filtration cannot be realized according to the shape and weight of impurities.

(2) Technical solutions

In order to achieve the above purpose, the present utility model provides the following technical solutions, a pre-filter for UF/RO system, comprising a water inlet, a movable screw is arranged inside the water inlet, and the movable screw is arranged outside. There is a coarse filter, a fine filter is arranged outside the coarse filter, a spiral support seat is arranged at both ends of the water inlet, a drain valve is arranged at the right end of the water inlet, and a water outlet is opened outside the right end of the water inlet, A backflushing pump is provided outside the water inlet, and a backflushing pipeline is provided at both ends of the backflushing pump, and the two ends of the backflushing pipeline are respectively fixed to the outside of the water inlet and the outside of the water outlet.

Preferably, the filter is mainly composed of three parts, the innermost rotating screw, the middle fixed filter element, and the outer filter shell.

Preferably, the coarse filter is an annular filter element that is perpendicular to the direction of water flow, the outer filter screen of the fine filter is a mesh-shaped filter screen whose filtration accuracy is doubled, and the two layers of the filter screen are connected and strengthened by reinforcing ribs. .

Preferably, the movable helix has a shaftless structure, and both ends are supported by bearings, and the material is made of light materials such as aluminum alloy or nylon plastic. The width of the spiral should be determined according to the water inlet pressure and the amount of treated water to ensure the self-rotation of the spiral. The spiral is equipped with a brush with greater elasticity to push the particles attached to the inner layer of the filter element toward the end.

Compared with the prior art, the utility model provides a pre-filter for UF/RO system, which has the following beneficial effects:

1. This pre-filter for UF/RO system realizes the push and discharge of retained impurities through the self-rotating screw. Due to the multiple effects of buoyancy, gravity and centrifugal force, impurities will appear in different positions in the filter. It is conducive to the filtration, collection and discharge of impurities. The double-layer filter element structure of ring + mesh realizes the cascade filtration of the filter, which is beneficial to the improvement of filtration precision, filtration cycle and water flow. In the state of sewage swirling, impurities are not easy to fit in the filter. On the water surface, the occurrence of blockage over the water surface can be greatly reduced, and the filter element can be cleaned quickly and conveniently. If two sets are installed, one can be used and the other can be used for standby. On the basis of some, the modification and upgrade can be quickly realized. If the site installation location is sufficient, the filter can be upgraded by adding two control valves, a backwash pump, and installing a cross-line, so as to realize the backwash function and further extend the filter. cleaning cycle.

2. This pre-filter is used in UF/RO system. The filter design is simple and efficient, which can effectively reduce the manufacturing cost of the filter. Cascade filtration can effectively prolong the service life of the filter. When the water is in a swirling state, through the cleaning effect of the rotating screw, it can effectively reduce the occurrence of impurities blocking the water surface and ensure the water flow. Due to the simple structure design, the water can be filtered according to the required amount. , to adjust the filter and filter element diameters.

Description of drawings

FIG. 1 is a schematic view of the front structure of the utility model.

Among them: 1. Water inlet; 2. Movable screw; 3. Fine filter; 4. Coarse filter; 5. Screw support seat; 6. Drain valve; 7. Water outlet; 8. Backwash pump; 9. Backflush line.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to Figure 1, a pre-filter for UF/RO system, including a water inlet 1, a movable screw 2 is arranged inside the water inlet 1, and a coarse filter 4 is arranged outside the movable screw 2, and the coarse filter A fine filter 3 is arranged outside the filter 4, a spiral support seat 5 is arranged at both ends of the water inlet 1, a drain valve 6 is arranged at the right end of the water inlet 1, a water outlet 7 is opened outside the right end of the water inlet 1, and a counter is arranged outside the water inlet 1. The flushing pump 8 is provided with a backflushing pipeline 9 at both ends of the backflushing pump 8 , and the two ends of the backflushing pipeline 9 are respectively fixed to the outside of the water inlet 1 and the outside of the water outlet 7 .

Through the above technical solutions, the filter is installed horizontally, the spiral is a shaftless structure, and the two ends are supported by bearings fixed on the filter. The inner swirl state, the filter element is a double-layer structure, and the inner filter screen is an annular filter element perpendicular to the direction of the water flow. This design is convenient for particles to push the spiral forward during the process of being trapped, and the outer filter screen doubles the filtration accuracy. The two layers of the filter are connected and reinforced by reinforcing ribs. The sewage adopts an inside-out type, and flows into the filter element from the filter inlet on one side, and flows out from the outer wall of the filter after the double-layer filtration of the filter. , The impurities trapped on the inner wall of the filter are pushed to the end cone section connected with the filter element under the action of the screw, and the pipe section is connected with the external sewage pipe. Through the action of the control valve, automatic sewage discharge is realized. The upper part of the rear end of the filter is discharged from the upper part of the rear end of the filter, connected to the system pipe network and then sent to the ultrafiltration system. A drain valve 6 is installed at the lower part of the rear end of the filter. It is set on the pressure-bearing pipeline. If the pressure is small, it can also be considered to install a cross-line at the inlet and outlet, and set a backwash pump 8 to realize the regular backwash function of the blocked filter screen.

Specifically, the filter is mainly composed of three parts, the innermost rotating screw, the middle fixed filter element, and the outer filter shell.

Through the above technical solutions, the three layers are made of different materials, the spiral is made of aluminum alloy or other light materials, the filter element is made of stainless steel, copper and other materials, and the filter is made of carbon steel.

Specifically, the coarse filter 4 is an annular filter element perpendicular to the direction of water flow, and the outer filter screen of the fine filter 3 is a mesh-shaped filter screen with twice the filtration accuracy.

Through the above technical solution, the annular + mesh-shaped double-layer filter element structure realizes the cascade filtration of the filter, which is beneficial to the improvement of filtration precision, filtration cycle and water flow.

Specifically, the movable helix 2 has a shaftless structure, and both ends are supported by bearings, and the material is made of light materials such as aluminum alloy or nylon plastic. The width of the spiral is determined according to the water inlet pressure and the amount of treated water to ensure the self-rotation of the spiral. The spiral is equipped with a brush with greater elasticity to push the particles attached to the inner layer of the filter element to the end.

Through the above technical solutions, the filter design is simple and efficient, which can effectively reduce the manufacturing cost of the filter. Through the internal design of the filter, the effects of gravity, buoyancy and centrifugal force of impurities are used to realize the cascade filtration of impurities and effectively prolong the use of the filter. Period, the water is in a swirling state, through the cleaning action of the rotating screw, effectively reducing the occurrence of impurities blocking the water surface and ensuring the water flow. Due to the simple structure design, the diameter of the filter and filter element can be adjusted according to the required amount of filtered water. .

The filter is set to be installed horizontally and is mainly composed of three parts. The innermost rotating spiral, the middle fixed filter element adopts a double-layer structure, and the outer filter shell is made of different materials. The spiral is made of aluminum alloy. Or other light materials, the filter element is made of stainless steel, copper and other materials, the filter is made of carbon steel, the spiral is a shaftless structure, the two ends are supported by bearings fixed on the filter, and the sewage is impacted by the separation blade and water flow at the inlet. The double function of the filter element realizes the swirling state in the filter element. The filter element has a double-layer structure, and the inner filter screen is an annular filter element perpendicular to the direction of the water flow. In order to double the filtration accuracy of the mesh-shaped filter, the two layers of the filter are connected and strengthened by reinforcing ribs. The sewage adopts an inside-out type, and flows into the filter element from the filter inlet on one side, and passes through the double-layer filter of the filter. Then it flows out from the outer wall of the filter, and the impurities trapped in the inner wall of the filter are pushed to the end cone section connected with the filter element under the action of the screw, and the pipe section is connected with the external sewage pipe. The filtered water is discharged from the upper part of the rear end of the filter, connected to the system pipe network and then transported to the ultrafiltration system. A drain valve 6 is arranged at the lower part of the rear end of the filter, and impurities such as iron filings and sediment with a large specific gravity are discharged through here. , Since this type of filter is set on the pressure-bearing pipeline, if the pressure is small, it can also be considered to install a cross-line at the inlet and outlet, and set up a backwash pump 8 to realize the regular backwash function of the blocked filter screen.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. A pre-filter for UF/RO system, comprising a water inlet (1), characterized in that: the water inlet (1) is internally provided with a movable screw (2), and the movable screw (2) A coarse filter (4) is arranged outside, a fine filter (3) is arranged outside the coarse filter (4), and a spiral support seat (5) is arranged at both ends of the water inlet (1). The right end of the water inlet (1) is provided with a drain valve (6), the outside of the right end of the water inlet (1) is provided with a water outlet (7), and the outside of the water inlet (1) is provided with a recoil pump (8), so the Both ends of the backflushing pump (8) are provided with backflushing pipelines (9), and both ends of the backflushing pipelines (9) are respectively fixed to the outside of the water inlet (1) and the outside of the water outlet (7). 2. a kind of pre-filter for UF/RO system according to claim 1, is characterized in that: described filter is mainly made up of three parts, the innermost rotating spiral, the fixed filter element of middle layer, outer layer filter housing. 3. a kind of pre-filter for UF/RO system according to claim 1, is characterized in that: described coarse filter (4) is the annular filter element perpendicular to the direction of water flow, and described fine filter (3) ) The outer filter is a net-shaped filter with twice the filtration accuracy, and the two layers of the filter are connected and reinforced by reinforcing ribs.

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