Automatic high-pressure backwashing filter

Abstract

The utility model discloses an automatic high-pressure backwashing filter which comprises a valve body, a plurality of filters are arranged at the bottom of the valve body, a liquid outlet, a liquid inlet and a drain outlet are respectively formed in the end face of one end of the valve body, and a first cavity is formed in the valve body and is opposite to the filters; the first cavity is communicated with the liquid outlet, the liquid inlet and the drain outlet, a valve element assembly is arranged in the first cavity, a pilot valve liquid inlet plate assembly used for controlling the valve element assembly is fixedly installed at the position, located at the front end of the filter, of the bottom of the valve body, and an electromagnetic pilot valve is fixedly installed at the bottom of the pilot valve liquid inlet plate assembly. And the electromagnetic pilot valve is connected with the pilot valve liquid inlet plate assembly. In combination with the structural design of the utility model, the larger the pressure in the filter cavity in the liquid inlet is, until a set pressure value is reached, the medium stops flowing into the inflow channel, the electromagnetic pilot operated valve is switched into a clean state, and water flows into the filter cavity from the clean channel, so that the purpose of cleaning under automatic control is achieved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an automatic high-pressure backwashing filter. Background Technology

[0002] A backwash filter is a precision device that uses a filter screen to directly intercept impurities in water, remove suspended solids and particulate matter, reduce turbidity, purify water quality, and reduce the generation of system dirt, algae, rust, etc., in order to purify water quality and protect the normal operation of other equipment in the system. The backwash filter includes a housing and a filter box set on the housing. The filter box is equipped with an annular filter screen, and the annular filter screen and the inner side wall of the filter box form a front filter chamber. The inside of the annular filter screen serves as a rear filter chamber. The housing is provided with an inflow channel for the medium to flow in, which communicates with the front filter chamber. The housing is also provided with an outflow channel for the medium to flow out, which communicates with the rear filter chamber.

[0003] However, current backwash filters, after intercepting impurities from the water with the annular filter screen, leave them directly in the pre-filter chamber. As the amount of impurities increases, they will clog the backwash filter, requiring manual cleaning and increasing maintenance costs. Summary of the Invention

[0004] The purpose of this utility model is to provide an automatic high-pressure backwash filter to solve the problem mentioned in the background art. In the current backwash filter, after the annular filter screen intercepts impurities from the water, they are directly retained in the pre-filter chamber. As the amount of impurities increases, the backwash filter will be blocked, requiring manual cleaning of the backwash filter, which increases the maintenance cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic high-pressure backwash filter, comprising a valve body, wherein multiple filters are disposed at the bottom of the valve body, and an outlet, an inlet, and a drain outlet are respectively provided on one end face of the valve body. A first chamber is provided in the valve body at a position opposite to the filters, and the first chamber is connected to the outlet, inlet, and drain outlet. A valve core assembly is disposed in the first chamber. A pilot valve inlet plate assembly for controlling the valve core assembly is fixedly installed at the bottom of the valve body at the front end of the filter. An electromagnetic pilot valve is fixedly installed at the bottom of the pilot valve inlet plate assembly, and the electromagnetic pilot valve is connected to the pilot valve inlet plate assembly.

[0006] Preferably, the pilot valve inlet plate assembly includes a fixing plate, a second chamber, and an inlet component. The fixing plate is fixedly installed at the bottom of the valve body. The fixing plate has a second chamber located at a position opposite to the first chamber, and the second chamber communicates with the first chamber. The inlet component is disposed in the second chamber.

[0007] Preferably, the liquid inlet assembly is connected to an electromagnetic pilot valve.

[0008] Preferably, the valve core assembly includes a valve core, a spring, and an end screw. The valve core is movably connected to a first chamber, and the end screw is threadedly connected to the top opening of the first chamber. The end screw is connected to the valve core via a spring.

[0009] Preferably, the bottom of the valve core is movable between the first chamber and the second chamber.

[0010] Beneficial effects

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] Based on the structural design of this utility model, the pressure in the filter chamber inside the liquid inlet is increased. Currently, there are too many impurities in the filter chamber inside the liquid inlet, which causes part of the internal annular filter screen to be blocked. This causes the pressure in the filter chamber inside the liquid inlet to increase until it reaches the set pressure value. At this time, the medium stops flowing into the inflow channel, the electromagnetic pilot valve switches to the cleaning state, and water flows in from the cleaning channel, thereby achieving the purpose of automatic control cleaning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is an enlarged structural diagram of point A of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows:

[0017] 1. Valve body; 2. Filter; 3. Outlet; 4. Inlet; 5. Drain; 6. Pilot valve inlet plate assembly;

[0018] 7. Electromagnetic pilot valve; 8. First chamber; 9. Valve core assembly; 61. Fixing plate; 62. Second chamber;

[0019] 63. Liquid inlet assembly; 91. Valve core; 92. Spring; 93. End screw; Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figure 1-3 This is a schematic diagram of the structure of an automatic high-pressure backwash filter according to a preferred embodiment of the present invention. In this embodiment, the automatic high-pressure backwash filter includes a valve body 1, with multiple filters 2 disposed at the bottom of the valve body 1. One end face of the valve body 1 has an outlet 3, an inlet 4, and a drain 5. A first chamber 8 is disposed within the valve body 1 at a position opposite to the filters, and the first chamber 8 communicates with the outlet 3, inlet 4, and drain 5. A valve core assembly 9 is disposed within the first chamber 8. A pilot valve for controlling the valve core assembly 9 is fixedly installed at the bottom of the valve body 1, at the front end of the filters 2. The pilot valve inlet plate assembly 6 has an electromagnetic pilot valve 7 fixedly installed at its bottom, and the electromagnetic pilot valve 7 is connected to the pilot valve inlet plate assembly 6. Based on the structural design of this utility model, the pressure in the filter chamber inside the inlet port 4 increases as impurities accumulate, causing partial blockage of the internal annular filter screen. This pressure increases until a set pressure value is reached. At this point, the medium stops flowing into the inflow channel, the electromagnetic pilot valve 7 switches to a cleaning state, and water flows into the cleaning channel, thus achieving automatic cleaning control.

[0023] In this embodiment, the pilot valve inlet plate assembly 6 includes a fixing plate 61, a second chamber 62 and an inlet assembly 63. It is fixedly installed on the bottom of the valve body 1 by the fixing plate 61. The second chamber 62 is opened in the fixing plate 61 at a position opposite to the first chamber 8, and the second chamber 62 communicates with the first chamber 8. The inlet assembly 63 is provided in the second chamber 62.

[0024] In this embodiment, the liquid inlet assembly 63 is connected to the electromagnetic pilot valve 6, thereby realizing the control function of the electromagnetic pilot valve 6 on the liquid inlet assembly 63. After the liquid inlet assembly 63 is controlled by the electromagnetic pilot valve 6, it drives the valve core assembly 9 to move downward, so that the bottom of the valve core 91 moves between the first chamber 8 and the second chamber 62, realizing the self-cleaning function.

[0025] In this embodiment, the valve core assembly 9 includes a valve core 91, a spring 92, and an end screw 93. The valve core 91 is movably connected to the first chamber 8. The end screw 93 is threadedly connected to the top opening of the first chamber 8. The end screw 93 and the valve core 91 are connected by the spring 92. This structural design allows the position of the valve core 91 to be adjusted by adjusting the end screw 93 according to actual usage requirements. The spring 92 can also be used for quick reset.

[0026] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An automatic high pressure backwash filter comprising a valve body (1), characterized in that: The bottom of the valve body (1) is provided with a plurality of filters (2), one end of the valve body (1) is respectively provided with a liquid outlet (3), a liquid inlet (4) and a sewage outlet (5), the first chamber (8) is arranged in the valve body (1) at the opposite position of the filter, and the first chamber (8) is communicated with the liquid outlet (3), the liquid inlet (4) and the sewage outlet (5), the valve core assembly (9) is arranged in the first chamber (8), the pilot valve liquid inlet plate assembly (6) is fixedly installed at the bottom of the valve body (1) and in front of the filter (2) for controlling the valve core assembly (9), the electromagnetic pilot valve (7) is fixedly installed at the bottom of the pilot valve liquid inlet plate assembly (6), and the electromagnetic pilot valve (7) is connected with the pilot valve liquid inlet plate assembly (6).

2. The automatic high pressure backwash filter according to claim 1, wherein: The pilot valve liquid inlet plate assembly (6) comprises a fixed plate (61), a second chamber (62) and a liquid inlet assembly (63), the fixed plate (61) is fixedly installed at the bottom of the valve body (1), the second chamber (62) is arranged in the fixed plate (61) at the opposite position of the first chamber (8), and the second chamber (62) is communicated with the first chamber (8), and the liquid inlet assembly (63) is arranged in the second chamber (62).

3. The automatic backwash filter according to claim 2, wherein: The liquid inlet assembly (63) is connected with the electromagnetic pilot valve (7).

4. The automatic backwash filter of claim 1, wherein: The valve core assembly (9) comprises a valve core (91), a spring (92) and a terminal screw (93), the valve core (91) is movably connected in the first chamber (8), the terminal screw (93) is threadedly connected at the top cavity opening of the first chamber (8), and the terminal screw (93) and the valve core (91) are connected through the spring (92).

5. The automatic high pressure backwash filter according to claim 4, wherein: The bottom of the valve core (91) is movably arranged between the first chamber (8) and the second chamber (62).

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