CN218853601U

CN218853601U - Automatic back-flushing filter

Info

Publication number: CN218853601U
Application number: CN202223375439.1U
Authority: CN
Inventors: 朱斌; 佟永明; 邱继冬; 张永
Original assignee: Suzhou Yehua Environmental Technology Co ltd
Current assignee: Suzhou Yehua Environmental Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-14
Anticipated expiration: 2032-12-15

Abstract

The utility model relates to the technical field of water treatment, and discloses an automatic backwashing filter, wherein a raw water lift pump is arranged on a water outlet pipeline of a raw water tank, a pressure sensor and an inlet electric valve are arranged on water inlet pipelines of the raw water lift pump and the filter, and an outlet electric valve is arranged on the water outlet pipeline of the filter; a safety valve and a back pressure valve are arranged on a back flushing pipeline of the filter; compared with a conventional system, the filter has the advantages that when the valve group of the filter fails to open, the action of the backpressure valve and the safety valve can be triggered, the pressure of the pipeline is released, the pipeline is not broken due to overhigh pressure in the system or the pump is suppressed to cause damage, and meanwhile, the filter has the characteristics of low manufacturing cost, simple control logic, flexible operation, good stability and the like, and is particularly suitable for application in small water treatment filtering scenes.

Description

Automatic back-flushing filter

Technical Field

The utility model relates to the technical field of water treatment, in particular to an automatic backwashing filter.

Background

Filters are a common process in water treatment projects. The method is applied to tail water to remove various pollutants such as suspended matters and the like. The filter material filled in the filter intercepts suspended matters in the incoming water or adsorbs specific pollutants in the water. As contaminants are intercepted and adsorbed, the filter filtration pressure rises, requiring a backwash. The existing filter has more electric valves, complex operation and high failure rate, and is not suitable for small-sized items.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an automatic back flush filter possesses the cost of manufacture low, and control logic is simple, operates dexterous, advantage that stability is good, has solved the complicated, the higher problem of operation requirement of filter back flush control, and can not lead to the problem that the system internal pressure is too high to lead to the pipeline to break or the water pump burns out because the valves trouble can't be opened.

In order to achieve the above purpose, the utility model provides a following technical scheme: an automatic backwashing filter comprises a raw water tank and a filter, wherein a raw water lifting pump is arranged on a water outlet pipeline of the raw water tank, a pressure sensor and an inlet electric valve are arranged on water inlet pipelines of the raw water lifting pump and the filter, and an outlet electric valve is arranged on a water outlet pipeline of the filter;

and a safety valve and a back pressure valve are arranged on a back flushing pipeline of the filter.

Preferably, the pressure sensor is a hydraulic pressure transmitter.

Preferably, the inlet electric valve and the outlet electric valve are both connected with a PLC.

Preferably, the filter comprises:

a tank body;

the inner filter cylinder is arranged inside the tank body;

the outer filter cylinder is arranged on the outer side of the inner filter cylinder;

the outer filter ring is arranged at the bottom of the tank body and is positioned on the outer side of the outer filter cylinder;

the water inlet pipe is fixedly connected to the top of the tank body;

and the water outlet pipe is fixedly connected to the bottom of the tank body.

Preferably, the bore diameters of the inner filter cylinder, the outer filter cylinder and the outer filter ring are set from large to small.

Preferably, the outer side wall of the water outlet pipe is connected with an air compressor through an air inlet pipeline.

Compared with the prior art, the utility model provides an automatic back flush filter possesses following beneficial effect:

this automatic back flush filter compares with conventional system, can trigger the action of back pressure valve and relief valve when the valves trouble of filter can't open, releases the line pressure, can not make the system internal pressure too high lead to the pipeline to break or the pump suppress the pressure and lead to damaging, simultaneously, has the cost of manufacture low, and control logic is simple, operates characteristics such as dexterous, stability is good, the application of specially adapted small-size water treatment filtration scene.

Drawings

Exemplary embodiments of the present application will be described in detail below with reference to the attached drawings, it being understood that the following description of the embodiments is only for the purpose of explanation and not limitation of the scope of the present application, and in the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the filter of the present invention, wherein the filter is in a filtration state;

fig. 3 is a sectional view of the filter of the present invention, wherein the filter is in a back-washing state.

In the figure:

1. a raw water tank; 2. a raw water lift pump; 3. a pressure sensor; 4. a filter; 41. a tank body; 42. an inner filter cartridge; 43. an outer filter cartridge; 44. an outer filter ring; 45. a water inlet pipe; 46. a water outlet pipe; 5. an inlet electric valve; 6. an outlet electric valve; 7. a safety valve; 8. a back pressure valve; 9. an air compressor.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

In order to make the implementation purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.

The first embodiment is as follows:

an automatic backwashing filter comprises a raw water tank 1 and a filter 4, wherein a raw water lift pump 2 is arranged on a water outlet pipeline of the raw water tank 1, a pressure sensor 3 and an inlet electric valve 5 are arranged on water inlet pipelines of the raw water lift pump 2 and the filter 4, and an outlet electric valve 6 is arranged on a water outlet pipeline of the filter 4;

a safety valve 7 and a back pressure valve 8 are provided on the back-flush line of the filter 4.

In this embodiment, the pressure sensor 3 is a hydraulic pressure transmitter.

In this embodiment, the water pressure transmitter can monitor the water pressure in real time.

In this embodiment, specifically, the inlet electric valve 5 and the outlet electric valve 6 are both connected to the PLC.

In this embodiment, inlet motorised valve 5 and outlet motorised valve 6 adopt PLC control, and are simple and convenient, the operation of being convenient for.

In this embodiment, specifically, the filter 4 includes:

a tank 41;

an inner filter cartridge 42 provided inside the tank 41;

an outer filter cartridge 43 disposed outside the inner filter cartridge 42;

an outer filter ring 44 disposed at the bottom of the tank 41 and located outside the outer filter cartridge 43;

a water inlet pipe 45 fixedly connected to the top of the tank 41;

and a water outlet pipe 46 fixedly connected to the bottom of the tank 41.

In this embodiment, during filtering, water flows into the tank 41 through the water inlet pipe 45, and then impurities are sequentially filtered through the inner filter cartridge 42, the outer filter cartridge 43 and the outer filter ring 44, the filtered water flows are discharged through the water outlet pipe 46, during backwashing, water flows into the water outlet pipe 46, and the inner filter cartridge 42, the outer filter cartridge 43 and the outer filter ring 44 are backwashed in a reverse direction, so that backwashing efficiency can be improved.

In this embodiment, the inner filter cylinder 42, the outer filter cylinder 43 and the outer filter ring 44 have a smaller diameter.

In this embodiment, the inner filter cartridge 42, the outer filter cartridge 43, and the outer filter ring 44 sequentially filter impurities.

Referring to fig. 1 to 3, a raw water lift pump 2 lifts raw water in a raw water tank 1 to a filter 4, and an inlet and outlet electric valve 5 is opened. The filtering pressure measured by the initial pressure sensor 3 is small and cannot reach the triggering pressure of the safety valve 7 and the back pressure valve 8, the safety valve 7 and the back pressure valve 8 do not act, and raw water flows through the filter material layer from top to bottom to be filtered. After the filter material is operated for a period of time, the filter pressure begins to rise, when the filter pressure exceeds a set value, the inlet and outlet electric valves 5 are closed, the triggering pressures of the safety valve 7 and the back pressure valve 8 are simultaneously reached, the safety valve 7 and the back pressure valve 8 are opened, and the filter material is flushed up by water from bottom to top, so that the backwashing purpose is reached, and the filter pressure is recovered. After a set time, the inlet and outlet electric valves 5 are opened, the filtering pressure is reduced to be lower than the set pressure, the safety valve 7 and the back pressure valve 8 cannot be triggered, the raw water is continuously filtered, and a cycle of filtering and back flushing is completed.

Example two:

the function of increasing the backwashing effect is added on the basis of the first embodiment.

The outer side wall of the water outlet pipe 46 is connected with an air compressor 9 through an air inlet pipeline.

Referring to fig. 1-3, during the back flushing, the air compressor 9 is started at the same time, so that the air compressor 9 fills high-pressure gas into the back flushing water flow through the air inlet pipeline, and the high-pressure gas and the water flow are removed from the inner filter cylinder 42, the outer filter cylinder 43 and the outer filter ring 44 at the same time, thereby greatly improving the back flushing effect.

The present application has been described in connection with only the presently preferred embodiments with the understanding that the present disclosure is not to be considered as limiting, and the present application is not limited to the examples described above, but rather, it is to be understood that changes, modifications, additions or substitutions that are within the spirit and scope of the application by one of ordinary skill in the art are included.

Claims

1. The utility model provides an automatic back flush filter, includes former water tank (1) and filter (4), its characterized in that: a raw water lifting pump (2) is arranged on a water outlet pipeline of the raw water tank (1), a pressure sensor (3) and an inlet electric valve (5) are arranged on water inlet pipelines of the raw water lifting pump (2) and the filter (4), and an outlet electric valve (6) is arranged on a water outlet pipeline of the filter (4);

a safety valve (7) and a back pressure valve (8) are arranged on a back flushing pipeline of the filter (4).

2. The automatic backwashing filter of claim 1, wherein: the pressure sensor (3) is a water pressure transmitter.

3. The automatic backwashing filter of claim 1, wherein: and the inlet electric valve (5) and the outlet electric valve (6) are connected with the PLC.

4. The automatic backwash filter as defined in claim 1, wherein: the filter (4) comprises:

a tank (41);

an inner filter cartridge (42) provided inside the tank (41);

an outer filter cartridge (43) disposed outside the inner filter cartridge (42);

the outer filter ring (44) is arranged at the bottom of the tank body (41) and is positioned outside the outer filter cylinder (43);

the water inlet pipe (45) is fixedly connected to the top of the tank body (41);

and the water outlet pipe (46) is fixedly connected to the bottom of the tank body (41).

5. The automatic backwash filter as defined in claim 4, wherein: the pore diameters of the inner filter cylinder (42), the outer filter cylinder (43) and the outer filter ring (44) are set from large to small.

6. The automatic backwashing filter of claim 4, wherein: the outer side wall of the water outlet pipe (46) is connected with an air compressor (9) through an air inlet pipeline.