Automatic backwashing water filtering device capable of preventing organisms from adhering to water

Abstract

The utility model relates to the technical field of water treatment, in particular to an automatic backwashing water filtering device capable of preventing organisms from adhering to water. Comprising a raw water cylinder, a purified water cylinder, a raw water pump, a backwashing pump, a purified water tank and a control valve group, the raw water cylinder is composed of a water inlet, an overflow port and a drain outlet, the water purification cylinder is composed of a buoyancy ring, a limiting baffle, a water passing hole, a sand filtering layer, a water filtering pipe and a purified water outlet, through gravity overflow filtering and purified water automatic backwashing, the problems of hole blocking, biological attachment and filter material pollution can be effectively solved, daily maintenance work is reduced, and the service life of the water purification cylinder is prolonged. The water quality pretreatment for water environment monitoring or other water quality filtration and purification can be met.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to an automatic backwashing and anti-biological attachment water filtration device. Background Art

[0002] Water filtration devices are key equipment for purifying water in areas such as desalination, marine fisheries, aquariums, and sewage treatment. Filtering impurities from water generally refers to the process of separating tiny particles mixed or suspended in the water from the liquid through a filter medium under the action of force.

[0003] Online water quality monitoring is a prerequisite for the informatization of fisheries and environmental monitoring. However, suspended impurities, microorganisms, and juvenile or adult plankton in the water, which can clog sensor surfaces or equipment pipes, leading to data errors, are common. Current solutions include: 1. Manually clean the sensors or equipment pipes on an irregular basis, depending on the specific situation; 2. Install a front-end filter and perform regular manual cleaning or frequent filter media replacement, depending on the specific situation. Manual cleaning operations hinder the need for automated online water quality monitoring.

[0004] At present, the water quality monitoring equipment installed by water quality monitoring system manufacturers or end users basically adopts pipeline flow-through Y-type filters, which require cleaning or replacement of filter elements, or the monitoring sensors are directly placed in the raw water. They are often contaminated by aquatic organisms or sediment, affecting the accuracy of monitoring data and increasing calibration and maintenance work. Therefore, the design of an automatic backwash water quality filter device that can prevent biological attachment is needed for the current automatic online water quality monitoring system. Summary of the Invention

[0005] This application aims to overcome at least one defect of the existing water quality monitoring equipment's supporting pretreatment filtration, and provide an automatic backwashing and anti-biological attachment water quality filtration device to solve the problem of biological attachment or sediment pollution at the terminal or blocked pipeline of the monitoring equipment, reduce daily calibration, demarcation, and maintenance costs, improve the monitoring data accuracy and automation implementation, so as to meet the needs of water environment monitoring or water quality purification pretreatment.

[0006] An automatic backwashing and anti-biological attachment water quality filtering device is characterized in that it includes a raw water cylinder, a clean water cylinder, a raw water pump, a backwash pump, a clean water tank and a control valve group; the raw water cylinder is composed of a water inlet, an overflow port and a sewage outlet; the clean water cylinder is composed of a buoyancy ring, a limit baffle, a water hole, a sand filter layer, a water filter pipe, and a clean water outlet; the clean water tank is composed of a backwash water intake, a clean water receiving port, a clean water supply port, and a liquid level switch; raw water is pumped into the raw water cylinder from the water inlet by the raw water pump, and flows into the clean water tank through the water hole, sand filter layer, water filter pipe, clean water outlet, and clean water receiving port of the clean water cylinder; backwash water enters the backwash pump through the backwash water intake, is reversely transported into the clean water cylinder from the clean water outlet, flows into the raw water cylinder from the water hole, and is discharged from the sewage outlet.

[0007] An automatic backwashing and anti-biological attachment water quality filter device is characterized in that: the raw water cylinder, the clean water cylinder and their auxiliary components are all made of HDPE material, the control valve group consists of a clean water valve, a backwash valve and a drain valve, the clean water valve is arranged in front of the clean water receiving port pipeline, the backwash valve is connected to the backwash pump outlet, and the drain valve is connected to the drain port.

[0008] An automatic backwashing and anti-biological attachment water quality filter device is characterized in that: the lowest opening position of the water hole of the water purification cylinder is at least 200 mm higher than the highest filling height of the sand filter layer, the lowest position of the limit baffle is lower than the lowest position of the water hole, the upper end of the water filter pipe is a sealed plug, the water filter holes are evenly arranged at the lower end, and the highest position of the water filter hole opening is lower than the highest height of the sand filter layer.

[0009] An automatic backwashing and anti-biological attachment water quality filter device is characterized in that: the buoyancy ring is also provided with a soft brush, which can freely float up to the top of the barrel or sink to the limit baffle according to the liquid level in the raw water cylinder.

[0010] The beneficial effects of this application are: ① Through gravity overflow filtration, the interference with raw water quality indicators is reduced; ② The design uses clean water for automatic backwashing, which not only avoids the pollution of the system by using raw water backwashing, but also reduces daily maintenance work; ③ The use of HDPE material combined with the buoyancy ring relies on the liquid level changes in the raw water cylinder to repeatedly flush the water holes, effectively solving the problems of hole blockage and biological attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Hereinafter, some specific embodiments of the present application will be described in detail in an illustrative and non-limiting manner with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0012] Attachment Figure 1 This is a system diagram of an automatic backwashing and anti-biological attachment water filtration device provided in an embodiment of the present application; DETAILED DESCRIPTION

[0013] The present application will be further described in detail below with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams that only illustrate the basic structure and principle of the present application in a schematic manner, and therefore only show the components related to the present application.

[0014] like Figure 1 The invention discloses an automatic backwashing and anti-biological attachment water quality filtering device, comprising a raw water cylinder (1), a clean water cylinder (2), a raw water pump (3), a backwash pump (4), a clean water tank (5) and a control valve group; the raw water cylinder (1) is composed of a water inlet (101), an overflow port (102) and a sewage outlet (103); the clean water cylinder (2) is composed of a buoyancy ring (201), a limit baffle (202), a water hole (203), a sand filter layer (204), a water filter pipe (205), and a clean water outlet (206); the clean water tank (5) is composed of a backwash water inlet (501), a clean water receiving port (503), and a backwashing water inlet (504). 02), a clean water supply port (503), and a liquid level switch (504); raw water is pumped into the raw water cylinder (1) from the water inlet (101) by the raw water pump (3), and flows into the clean water tank (5) through the water hole (203) of the clean water cylinder (2), the sand filter layer (204), the filter pipe (205), the clean water outlet (206), and the clean water receiving port (502); backwash water enters the backwash pump (4) through the backwash water inlet (501), is reversely transported to the clean water cylinder (2) from the clean water outlet (206), flows into the raw water cylinder (1) from the water hole (203), and is discharged from the sewage outlet (103).

[0015] Furthermore, the raw water cylinder (1), the clean water cylinder (2) and their auxiliary components are all made of HDPE material, and the control valve group consists of a clean water valve (601), a backwash valve (602) and a sewage valve (603). The clean water valve (601) is arranged in front of the clean water receiving port (502) pipeline, the backwash valve (602) is connected to the outlet of the backwash pump (4), and the sewage valve (603) is connected to the sewage outlet (103).

[0016] The lowest opening position of the water hole (203) of the water purification cylinder (2) is at least 200 mm higher than the highest filling height of the sand filter layer (204); the lowest position of the limit baffle (202) is lower than the lowest position of the water hole (203); the upper end of the water filter pipe (205) is a sealed plug (2051); the lower end is evenly arranged with water filter holes (2052); and the highest opening position of the water filter holes (2052) is lower than the highest height of the sand filter layer (204).

[0017] Furthermore, there is a soft brush (2011) on the buoyancy ring (201), which can freely float up to the top of the barrel or sink to the limit baffle (202) according to the liquid level in the raw water cylinder (1).

[0018] Specifically, when the raw water pump (3) is started, the drain valve (603) and the backwash valve (602) are in a closed state, and the clean water valve (601) is in an open state. The raw water is pumped into the raw water cylinder (1) from the water inlet (101) through the raw water pump (3). At this time, the buoyancy ring (201) floats to a position above the water hole (203) due to the rise of the liquid level in the raw water cylinder (1). The raw water flows into the clean water tank (5) through the water hole (203) of the clean water cylinder (2), the sand filter layer (204), the filter pipe (205), the clean water outlet (206), and the clean water receiving port (502); when the backwash pump (4) is started, the drain valve (603) and the backwash valve (602) are in an open state, and the clean water valve (601) is in a closed state. The raw water in (1) is discharged from the sewage outlet (103), and the drop in the liquid level causes the buoyancy ring (201) to also drop to the limit baffle (202), thereby flushing the water hole (203); the backwash water enters the backwash pump (4) through the backwash water inlet (501), is reversely transported to the clean water cylinder (2) through the clean water outlet (206), flows into the raw water cylinder (1) through the water hole (203), and is discharged from the sewage outlet (103). When the liquid level switch (504) of the clean water tank (5) detects that the liquid level of the clean water tank (5) is lower than the set value, the backwash pump (4) stops, the sewage valve (603) and the backwash valve (602) are closed, the clean water valve (601) is opened, the backwash work is completed, and the cycle returns to the normal water filtering working state.

[0019] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed in this application, who makes equivalent substitutions or changes based on the technical solution and inventive concept of the present application, should be covered by the scope of protection of the present application.

Claims

1. An automatic backwashing and anti-biological attachment water quality filter device, characterized in that: It includes a raw water cylinder, a clean water cylinder, a raw water pump, a backwash pump, a clean water tank and a control valve group; the raw water cylinder is composed of a water inlet, an overflow port and a sewage outlet; the clean water cylinder is composed of a buoyancy ring, a limit baffle, a water hole, a sand filter layer, a water filter pipe and a clean water outlet; the clean water tank is composed of a backwash water inlet, a clean water receiving port, a clean water supply port and a liquid level switch; the raw water is pumped into the raw water cylinder from the water inlet by the raw water pump, and flows into the clean water tank through the water hole, sand filter layer, water filter pipe, clean water outlet and clean water receiving port of the clean water cylinder; the backwash water enters the backwash pump through the backwash water inlet, is reversely transported into the clean water cylinder from the clean water outlet, flows into the raw water cylinder from the water hole, and is discharged from the sewage outlet.

2. The automatic backwashing and anti-biological attachment water filtration device according to claim 1, characterized in that: The raw water cylinder, clean water cylinder and their auxiliary components are all made of HDPE material. The control valve group consists of a clean water valve, a backwash valve and a drain valve. The clean water valve is arranged in front of the clean water receiving port pipeline, the backwash valve is connected to the backwash pump outlet, and the drain valve is connected to the drain port.

3. The automatic backwashing and anti-biological attachment water filtration device according to claim 1, characterized in that: The lowest opening position of the water hole of the water purification cylinder is at least 200 mm higher than the highest filling height of the sand filter layer, the lowest position of the limit baffle is lower than the lowest position of the water hole, the upper end of the water filter pipe is a sealed plug, and the water filter holes are evenly arranged at the lower end, and the highest position of the water filter hole opening is lower than the highest height of the sand filter layer.

4. The automatic backwashing and anti-biological attachment water filtration device according to claim 1, characterized in that: The buoyancy ring is provided with a soft brush, and can freely float up to the top of the barrel or sink to the limit baffle according to the liquid level in the raw water cylinder.

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