CN111236363A - Secondary water supply tank with full-quantity filtering and self-cleaning functions and method - Google Patents

Abstract

The invention discloses a secondary water supply water tank and method with full filtration and self-cleaning functions. The water tank includes a water tank body. An overflow channel is formed. The baffle divides the water tank body from front to back into a first water tank and a second water tank. The first water tank is connected to the municipal water pipeline. The municipal water pipeline is provided with a water inlet valve, and the first water tank is provided with a filter device. , the water is fed from the side of the filtering device and filtered, and then the bottom is discharged. The filtering device is communicated with the second water tank through the bottom connecting pipeline. The bottom end of the first water tank is provided with a sewage pipeline. The advantages of the liquid level detection mechanism for the opening and closing of the water valve are: the municipal tap water is subjected to preliminary precipitation, and then fully filtered to remove secondary pollutants in the water supply, and can automatically clean the filter device, ensuring the normal water supply for the residents during self-cleaning. .

Description

A secondary water supply water tank and method with full filtration and self-cleaning functions

technical field

The invention relates to the field of secondary water supply in urban and rural areas, in particular to a secondary water supply tank and method with full filtering and self-cleaning functions.

Background technique

The safety of drinking water is closely related to people's life and health and sustainable economic and social development. It is an important symbol of the development level of modern cities and the quality of life of urban and rural residents. The tap water treated by the water plant is transported to each household through a huge municipal pipeline system for secondary water supply. Nowadays, more and more communities set up water tanks underground to store tap water, and then transport it to households through a pressurized pump. Under normal circumstances, the tap water treated by the water plant can generally meet the national drinking water sanitation standards, but the huge underground pipe network system is like a large "reactor", and many water quality problems are mainly caused by the water plant and each On the "intermediate link" between the taps of each household. On the one hand, the aging and corrosion of pipeline materials in the underground pipe network system, the leakage of water pipe joints, and the peeling of the coating on the inner wall of metal pipes are the main sources of "secondary pollution". Pollutants are mainly metal corrosion products, dissolved organic matter, and suspended sediments mixed into the pipe network. On the other hand, water supply equipment such as water tanks and pumps are prone to pollution problems due to poor management or untimely maintenance during secondary water supply, which affects the safety of domestic water.

Moreover, the pollution of the secondary water supply system is universal, multiple and uncertain. Due to the continuous expansion of the central urban area, the transformation of old pipes requires a large amount of work, the construction is difficult, and operations such as water interruption and takeover have a large disturbance to the water supply system. Therefore, it is impossible to thoroughly clean up the underground water supply pipe network, making the tap water in the process of transportation. The problem of "secondary pollution" has not been fundamentally solved, and there is still a gap between the quality of urban tap water entering households and people's living needs.

In addition, when the water storage tank is regularly maintained and cleaned, there are also some problems: on the one hand, the existing water tank cleaning work is basically done manually, the working space is small, and the cleaning task is heavy; The increase of disturbance will lead to periodic or sudden water supply water pollution, which will seriously affect the water supply quality of regional users.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a secondary water supply tank and method with full filtration and self-cleaning functions, which can perform full filtration and precipitation on the secondary water supply, remove secondary pollutants, and can The automatic cleaning of the filter device does not affect the normal secondary water supply of the household during self-cleaning.

The technical solution adopted by the present invention to solve the above technical problems is as follows: a secondary water supply water tank with full filtration and self-cleaning functions, comprising a water tank body, and a baffle plate is vertically arranged in the water tank body, and the baffle plate An overflow channel is formed at intervals between the top end and the top wall of the water tank body. The baffle divides the water tank body into a first water tank and a second water tank from front to back. The first water tank It is connected with the municipal water pipeline, the end of the municipal water pipeline entering the first water tank is provided with a water inlet valve, the first water tank is provided with a filtering device, and at least one side of the filtering device is provided There is a filter water inlet communicating with the outside, the bottom of the filter device is provided with a filter water outlet, and the filter water outlet is communicated with the second water tank through a connecting pipeline, and the connecting pipeline is provided with The first valve, the bottom end of the first water tank is provided with a sewage pipeline, the sewage pipeline is provided with a second valve, and the second water tank is provided with a connection with the water inlet valve and used for The liquid level detection mechanism for switching the open and closed states of the water inlet valve, the rear side of the second water tank is connected with the secondary water supply pipeline.

In some embodiments, the side wall of the filter device is surrounded by a stainless steel metal filter screen, the mesh of the stainless steel metal filter screen constitutes the filter water inlet, and the top and bottom ends of the filter device are In order to be sealed, the filter water outlet is provided at the bottom end of the filter device, and the filter device is provided with a plurality of filter medium units. As a result, the municipal water enters the filter device from the stainless steel metal screen, and after being purified by the internal filter medium unit, flows out from the bottom and enters the second water tank. The municipal water can be simultaneously precipitated and filtered in the first water tank.

In some embodiments, the precision range of the stainless steel metal filter screen is 0.1-100 microns, and the filter medium unit is filled with a single or a combination of the following filter materials: quartz sand, granular activated carbon, medical stone, Ceramsite, fiber ball. As a result, it has a better filtering effect, and most of the secondary pollutants can be removed along the filtering path to obtain better water quality. In addition, the filter medium and setting method are not limited to this, as long as the materials that can filter the secondary pollutants can be used. included.

In some embodiments, an ultrasonic vibration plate is arranged in the first water tank, and the ultrasonic vibration plate is arranged in parallel on both sides or the outer periphery of the filter device. Therefore, during backwashing, the cleaning effect of the filter medium and the surrounding water inlet channels can be strengthened through ultrasonic vibration. Under the action of water flow and impact force, impurities enter the first water tank from the filter device in reverse, and then pass through the sewage channel. discharge.

In some embodiments, the first water tank is filled with fiber ball filter material, and the fiber ball filter material is arranged on the outer periphery of the filter device. In this way, the effect of water flow in the backwashing stage is used to further enhance the cleaning effect by rolling the fiber balls.

In some embodiments, at least two filter devices are provided, and the filter devices are arranged side by side in a vertical direction.

In some embodiments, the top end of the baffle is provided with an overflow weir, the upper end of the overflow weir is provided with a plurality of concave overflow grooves, and the cross section of the overflow groove is triangular, Arc, rectangle or inverted trapezoid. This can further play a role in maintaining the stability of the water flow.

In some embodiments, the liquid level detection mechanism includes a floating ball disposed in the second water tank, the floating ball is connected to the water inlet valve through a connecting rod, and the connecting rod spans Set above the baffle, the second water tank is provided with a set water level, and when the water level in the second water tank is lower than the set water level, the float control means The water inlet valve is opened; when the water level in the second water tank is higher than or equal to the set water level, the float ball controls the water inlet valve to close, so that the first water tank is closed. The liquid level is always kept above the said second tank level.

In some embodiments, the volume ratio of the first water tank to the second water tank ranges from 1:9 to 1:1. The volume size of the two water tanks is a specific choice. Combined with the above-mentioned other structures, this solution is formed to realize the dynamic balance of sedimentation filtration and water supply, which has a better effect.

A secondary water supply method using the above-mentioned secondary water supply water tank, comprising the following steps:

Filtration state: After entering the first water tank, the municipal water enters the filter device for filtration after preliminary precipitation, opens the first valve, the filtered purified water enters the second water tank through the connecting pipeline, and opens the secondary water supply pipeline to supply water to each household. , the liquid level detection mechanism controls the water inlet valve of the first water tank, which is used to control the amount of influent water, keep the liquid level of the second water tank constant, and make the liquid level of the first water tank always higher than the liquid level of the second water tank;

Overflow state: When the filter device is blocked, the liquid level of the first water tank rises rapidly until the water in the first water tank overflows into the second water tank through the overflow channel, ensuring the normal supply of water for the households;

Backwash state: After the overflow state occurs, when the liquid level of the second water tank returns to the set water level, the liquid level detection mechanism controls to close the water inlet valve, close the first valve, and open the second valve on the sewage pipeline to make the The liquid level of the second water tank is higher than the liquid level of the first water tank, and then the first valve is opened, and the water in the second water tank enters the filter device from the opposite direction of the connecting pipeline under the action of the water pressure difference, and the filter device is cleaned. The cleaning sewage is discharged from the sewage outlet; the ultrasonic vibrating plates arranged on both sides or the outer periphery of the filter device are activated to strengthen the cleaning of the filter device together with the backflushing water flow.

Compared with the prior art, the advantages of the present invention are:

(1) By setting baffles, the original water tank is divided into a first water tank and a second water tank. The tops of the two water tanks are connected to form an overflow channel. A filter device is installed in the first water tank, and municipal water supply is in the first water tank. Simultaneously precipitation and full filtration are carried out inside to remove secondary pollutants, and the tap water purified by the first water tank is stored in the second water tank for residents;

(2) When the liquid level of the first water tank rises rapidly due to the blockage of the filter device, the water in the first water tank overflows to the second water tank through the top overflow channel, and the second water tank is provided to control the inlet and outlet of the first water tank. The liquid level detection mechanism of the opening and closing of the water valve can control the water inlet of the first water tank through the liquid level in the second water tank, so as to ensure that the liquid level of the first water tank is higher than the liquid level of the second water tank, thereby ensuring the filtration process and the filter effect;

(3) When the filter device is blocked, the liquid level detection mechanism can control the closing of the water inlet valve and the opening of the drain valve, so that the filter device can be automatically backwashed by using the water level pressure difference between the first water tank and the second water tank, and further The cleaning effect is enhanced by setting the ultrasonic vibration plate on the side of the filter device;

(4) No matter in the filtration stage, overflow stage or backwash stage, it will not affect the normal household secondary water supply, and provide convenience for the household;

(5) Solving the problems of the existing water tank cleaning space is small and relying on manual cleaning tasks, the structure of the present invention can realize timely and convenient self-cleaning of the filter device and the water tank, and the addition of ultrasonic vibration plates can further improve the self-cleaning effect. Moreover, the secondary water supply system will not be disturbed during cleaning.

Description of drawings

1 is a schematic structural diagram of an embodiment of a secondary water supply water tank with full filtration and self-cleaning functions of the present invention;

FIG. 2 is a schematic diagram of the filtration state of an embodiment of a secondary water supply water tank with full filtration and self-cleaning functions according to the present invention;

3 is a schematic diagram of an overflow state of an embodiment of a secondary water supply water tank with full filtration and self-cleaning functions of the present invention;

4 is a schematic diagram of a backwashing state of an embodiment of a secondary water supply water tank with full filtration and self-cleaning functions of the present invention;

5 is a top view of an embodiment of a secondary water supply water tank with full filtration and self-cleaning functions of the present invention;

6 is a schematic diagram of filtering by a filtering device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of backwashing of a filter device according to an embodiment of the present invention.

Among them, the water tank body 1, the baffle 2, the overflow channel 3, the first water tank 4, the second water tank 5, the municipal water pipeline 6, the water inlet valve 7, the filter device 8, the connecting pipeline 9, the first valve 10, the sewage Pipeline 11, second valve 12, secondary water supply pipeline 13, stainless steel metal filter screen 14, filter water outlet 15, filter medium unit 16, ultrasonic vibration plate 17, float 18, connecting rod 19, water flow meter 20, The third valve 21 , the filter 22 , the fourth valve 23 , the water supply pump 24 , the water quality sensor 25 , and the control system 26 .

Detailed ways

A secondary water supply water tank and method with full filtration and self-cleaning functions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments, but it is not intended to limit the present invention.

Example 1

As shown in the figure, a secondary water supply water tank with full filtration and self-cleaning functions includes a water tank body 1, and a baffle plate 2 is vertically arranged in the water tank body 1. The top of the baffle plate 2 and the top wall of the water tank body 1 The overflow channels 3 are formed at intervals, and the baffle 2 divides the water tank body 1 into a first water tank 4 and a second water tank 5 from front to back. The first water tank 4 is connected to the municipal water pipeline 6, and the municipal water pipeline 6 enters the first water tank. One end of the 4 is provided with a water inlet valve 7, the first water tank 4 is provided with a filtering device 8, at least one side of the filtering device 8 is provided with a filtering water inlet communicating with the outside, and the bottom of the filtering device 8 is provided with a filtering water outlet, The filtered water outlet is communicated with the second water tank 5 through the connecting pipeline 9, the connecting pipeline 9 is provided with a first valve 10, the bottom end of the first water tank 4 is provided with a sewage pipeline 11, and the sewage pipeline 11 is provided with a first valve 10. Two valves 12 , the second water tank 5 is provided with a liquid level detection mechanism connected to the water inlet valve 7 and used to switch the opening and closing state of the water inlet valve 7 , and the rear side of the second water tank 5 is connected to the secondary water supply pipeline 13 .

In this embodiment, the filtered water outlet at the bottom of the filter device 8 is communicated with the second water tank 5 through a connecting pipeline 9, the connecting pipeline extends out of the water tank body 1, and the connecting pipeline 9 is used to control the opening and closing of the pipeline. The first valve 10 is also arranged outside the water tank body 1 .

In this embodiment, one filter device 8 is provided. In other embodiments, different numbers of filter devices 8 can be provided according to the actual water consumption of the household. When two or more filter devices 8 are provided, the filter devices 8 are in the vertical direction. Arranged side by side.

Embodiment 2

The present embodiment proposes a secondary water supply water tank with full filtration and self-cleaning functions, which further defines the structure of the filtering device 8 on the basis of the first embodiment. In this embodiment, the side wall of the filter device 8 is surrounded by a stainless steel metal filter screen 14, the mesh of the stainless steel metal filter screen 14 constitutes a filter water inlet, the top and bottom ends of the filter device 8 are sealed, and the filter water outlet 15 is opened. At the bottom end of the filter device 8, several filter medium units 16 are arranged in the filter device 8.

In this embodiment, the fineness of the stainless steel metal filter screen 14 is 100 microns. In other embodiments, the precision range of the filter screen may also be 0.1, 10, and 50 microns. The filter medium unit 16 is filled with a single or a combination of the following filter materials: quartz sand, granular activated carbon, medical stone, ceramsite, fiber ball, or any filter material that can purify the water for the secondary water supply. In other embodiments, deep purification units such as PP cotton, pleated filter elements, or ultrafiltration membranes can also be connected in series in the filtering device 8 .

Embodiment 3

This embodiment proposes a secondary water supply water tank with full filtration and self-cleaning functions, which further improves the structure of the first water tank 4 on the basis of the first embodiment. In this embodiment, ultrasonic vibration plates 17 are arranged in the first water tank 4 , and the ultrasonic vibration plates 17 are arranged in parallel on both sides or the outer periphery of the filter device 8 . When cleaning, open the ultrasonic vibration plate on both sides or around the filter device, which can further enhance the cleaning effect of the filter device under the influence of water flow.

In this embodiment, the first water tank 4 is filled with fiber ball filter material, and the fiber ball filter material is arranged on the outer periphery of the filter device. In this way, the effect of water flow in the backwashing stage is used to further enhance the cleaning effect by rolling the fiber balls.

Embodiment 4

This embodiment proposes a secondary water supply water tank with full filtration and self-cleaning functions, which further improves the structure of the overflow channel 3 on the basis of the first embodiment. In this embodiment, the top end of the baffle plate 2 is provided with an overflow weir, the upper end of the overflow weir is provided with a plurality of concave overflow grooves, and the cross section of the overflow grooves is rectangular or inverted trapezoid.

Embodiment 5

This embodiment proposes a secondary water supply water tank with full filtration and self-cleaning functions, which further defines the structure of the liquid level detection mechanism on the basis of the first embodiment. In this embodiment, the liquid level detection mechanism includes a float ball 18 arranged in the second water tank 5 . The float ball 18 is connected to the water inlet valve 7 through a connecting rod 19 , and the connecting rod 19 is arranged above the baffle plate 2 or overflows A fulcrum of the connecting rod 19 is arranged above the channel 3, and a set water level is set in the second water tank 5. When the water level in the second water tank 5 is lower than the set water level, the float 18 controls the water inlet valve 7 to open; When the water level in the second water tank 5 is higher than or equal to the set water level, the float ball 18 controls the water inlet valve 7 to close, so that the liquid level of the first water tank 4 is always higher than the liquid level of the second water tank 5, forming a head difference and ensuring the filtration process. and filter effects.

In this embodiment, the volume ratio of the first water tank 4 to the second water tank 5 is 1:5. In other embodiments, the volume ratio of the first water tank 4 to the second water tank 5 may be 1:9, 1:3, 1:9. 1 and so on. The volume of the second water tank is not smaller than that of the first water tank, so that the filtering, water supply, overflow and reverse cleaning processes of the water tank can be ensured.

Embodiment 6

The present embodiment proposes a secondary water supply water tank with full filtration and self-cleaning functions, which further defines the remaining structures of the water tank on the basis of any of the above-mentioned embodiments. In this embodiment, a water flow meter 20, a third valve 21 and a filter 22 are sequentially arranged on the municipal water pipeline 6 from front to back, and the water flow meter, the third valve and the filter are all arranged outside the water tank body. The secondary water supply pipeline 13 is provided with a fourth valve 23 for controlling the opening and closing of the secondary water supply pipeline and at least one water supply pump 24 in sequence from front to back. A water quality sensor 25 is provided in the second water tank 5 near the entrance of the secondary water supply pipeline 13 to detect that the water quality in the secondary water tank is poor and backwash the filter device 8 .

In this embodiment, the water flow meter 20, the third valve 21, the ultrasonic plate vibrating plate 17, the water inlet valve 7, the liquid level sensor (float 18), the water quality sensor 25, the water supply pump 24, the fourth valve 23, the first The valve 10 and the second valve 12 are respectively electrically connected to the external control system 26 , and the control method is the conventional technology, which will not be repeated here. In other embodiments, each valve can also adopt other alternative structures such as manual valve.

Embodiment 7

A water supply method for a secondary water supply tank using any of the above embodiments in this embodiment includes the following steps (arrows indicate the direction of water flow):

Filtration status: Municipal water enters the first water tank after initial precipitation and then enters the filter device for filtration, opens the first valve, the filtered purified water enters the second water tank through the connecting pipeline, and opens the secondary water supply pipeline at the end of the second water tank To supply water to each household, the liquid level detection mechanism controls the water inlet valve of the first water tank to control the amount of influent water, keep the liquid level of the second water tank constant, and make the liquid level of the first water tank always higher than the liquid level of the second water tank ; Under the condition of normal filtration flux and opening the secondary water supply pipeline to supply water to households, the liquid level of the first water tank is higher than the liquid level of the second water tank, and the liquid level of the second water tank is lower than the set water level, and the liquid level detection mechanism Control the water inlet valve to open for stable filtration and water supply operation.

Overflow state: When the filter device is blocked, the liquid level of the first water tank rises rapidly until the water in the first water tank overflows into the second water tank through the overflow channel, ensuring the normal supply of water for the households;

Backwash state: After the overflow state occurs, when the liquid level of the second water tank returns to the set water level, the liquid level detection mechanism controls to close the water inlet valve, close the first valve, and open the second valve on the sewage pipeline, so that the The liquid level of the second water tank is higher than the liquid level of the first water tank, and then the first valve is opened, and the water in the second water tank enters the filter device from the opposite direction of the connecting pipeline under the action of the water pressure difference, and the filter device is cleaned. The cleaning sewage is discharged from the sewage outlet.

In this embodiment, the ultrasonic vibration plates arranged on both sides or the outer periphery of the filter device are activated, and the filter device is intensively cleaned together with the backflushing water flow.

It is worth noting that the above descriptions are only the preferred embodiments of the present invention, and do not limit the scope of patent protection of the present invention. Technical equivalents are substituted. Therefore, all equivalent structural changes made by using the descriptions and illustrations of the present invention, or directly or indirectly applied to other related technical fields, are all included within the scope of the present invention.

Claims (10)

1. A secondary water supply water tank with full filtration and self-cleaning functions, comprising a water tank body, characterized in that a baffle plate is vertically arranged in the water tank body, and the top of the baffle plate is connected to the water tank body. The top walls are spaced to form an overflow channel. The baffle divides the water tank body from front to back into a first water tank and a second water tank. The first water tank is connected to the municipal water pipeline. One end of the municipal water pipeline entering the first water tank is provided with a water inlet valve, the first water tank is provided with a filter device, and at least one side of the filter device is provided with a filter water inlet that communicates with the outside. , the bottom of the filtering device is provided with a filtering water outlet, the filtering water outlet is communicated with the second water tank through a connecting pipeline, the connecting pipeline is provided with a first valve, and the first valve is provided on the connecting pipeline. The bottom end of a water tank is provided with a sewage pipeline, the sewage pipeline is provided with a second valve, and the second water tank is connected with the water inlet valve and used to switch the water inlet valve to open. A liquid level detection mechanism in a closed state, the rear side of the second water tank is connected to the secondary water supply pipeline. 2. A secondary water supply tank with full filtration and self-cleaning functions according to claim 1, characterized in that the side wall of the filter device is surrounded by a stainless steel metal filter, and the stainless steel metal filter The meshes constitute the filter water inlet, the top and bottom ends of the filter device are sealed, the filter water outlet is opened at the bottom end of the filter device, and the filter device is provided with Several filter media units. 3. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 2, characterized in that the precision range of the stainless steel metal filter screen is 0.1-100 microns, and the filter medium unit adopts Fill with a single or a combination of the following filter materials: quartz sand, granular activated carbon, medical stone, ceramsite, fiber ball. 4. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 1, characterized in that the first water tank is provided with an ultrasonic vibration plate, and the ultrasonic vibration plate is arranged in parallel in all the the sides or periphery of the filter device described. 5. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 1, characterized in that the first water tank is filled with fiber ball filter material, and the fiber ball filter material is arranged in the the periphery of the filter device. 6. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 1, wherein at least two filter devices are provided, and the filter devices are arranged side by side in the vertical direction . 7. A secondary water supply tank with full filtration and self-cleaning functions according to claim 1, characterized in that the top of the baffle is provided with an overflow weir, and the upper end of the overflow weir is provided with an overflow weir. A plurality of concave overflow grooves, the cross-section of the overflow groove is triangular, arc-shaped, rectangular or inverted trapezoid. 8. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 1, characterized in that the liquid level detection mechanism comprises a floating ball arranged in the second water tank, the The floating ball is connected to the water inlet valve through a connecting rod, the connecting rod is arranged above the baffle plate, and the second water tank is provided with a set water level. When the water level in the water tank is lower than the set water level, the floating ball controls the water inlet valve to open; when the water level in the second water tank is higher than or equal to the set water level, The floating ball controls the water inlet valve to close, so that the liquid level of the first water tank is always kept higher than the liquid level of the second water tank. 9. A secondary water supply water tank with full filtration and self-cleaning functions according to claim 1, characterized in that the volume ratio of the first water tank to the second water tank is in the range of 1:9～ 1:1. 10. A secondary water supply method using the secondary water supply water tank according to any one of claims 1-9, characterized in that it comprises the following steps: Filtration state: After entering the first water tank, the municipal water enters the filter device for filtration after preliminary precipitation, opens the first valve, the filtered purified water enters the second water tank through the connecting pipeline, and opens the secondary water supply pipeline to supply water to each household. , the liquid level detection mechanism controls the water inlet valve of the first water tank, which is used to control the amount of influent water, keep the liquid level of the second water tank constant, and make the liquid level of the first water tank always higher than the liquid level of the second water tank; Overflow state: When the filter device is blocked, the liquid level of the first water tank rises rapidly until the water in the first water tank overflows into the second water tank through the overflow channel, ensuring the normal supply of water for the households; Backwash state: After the overflow state occurs, when the liquid level of the second water tank returns to the set water level, the liquid level detection mechanism controls to close the water inlet valve, close the first valve, and open the second valve on the sewage pipeline to make the The liquid level of the second water tank is higher than the liquid level of the first water tank, and then the first valve is opened, and the water in the second water tank enters the filter device from the opposite direction of the connecting pipeline under the action of the water pressure difference, and the filter device is cleaned. The cleaning sewage is discharged from the sewage outlet; the ultrasonic vibrating plates arranged on both sides or the outer periphery of the filter device are activated to strengthen the cleaning of the filter device together with the backflushing water flow.

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