Double buffer tank intelligent rainwater and sewage diversion system and device

Abstract

The present invention discloses a dual-buffer tank intelligent rainwater and sewage diversion system and device, which relates to the technical field of rainwater and sewage diversion. The present invention includes two buffer tanks, a power supply module, a control unit module and a rainwater collection module. The two buffer tanks have the same structure; a water level collection module, a flow collection module and a flow electric control valve control module are provided in the buffer tank; the rainwater collection module is electrically connected to the control unit module, and transmits a rainwater collection signal to the control unit module; the control unit module is electrically connected to the water level collection module, the flow collection module and the flow electric control valve control module in the two buffer tanks respectively, and the power supply module is electrically connected to each of the above modules for power supply. The present invention discharges mixed sewage into two buffer tanks in turn. When sewage is discharged into one buffer tank, the other buffer tank is allowed to settle and discharge sewage. When discharging sewage, the problem of poor sewage diversion effect in a single buffer tank can be effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of rainwater and sewage diversion, and in particular relates to a double-buffer tank intelligent rainwater and sewage diversion system and device. Background Art

[0002] Rainwater and sewage separation is a drainage mechanism that reduces water pollution. It separates rainwater and sewage, transports them through different pipes, and then discharges or treats them later.

[0003] Currently, rainwater and sewage diversion in urban residential areas is implemented in a one-size-fits-all manner. A buffer tank is used to divert rainwater and sewage. On sunny days or at the beginning of rainfall, the bottom sewage outlet of the buffer tank is opened, and the upper sewage outlet is closed, allowing sewage or mixed sewage to flow directly into the inlet and out of the bottom sewage outlet. In the middle and late stages of rainfall, all outlets are closed first. After the mixed sewage level rises to the upper sewage outlet, the upper and lower sewage and rainwater regulating valves are adjusted in a certain ratio to ensure that the total outflow volume is equal to the mixed sewage inflow volume, and the water level in the buffer tank remains basically unchanged. The mixed sewage mainly consists of kitchen wastewater and washing wastewater, and the excretion wastewater is directly connected to the urban sewage pipe.

[0004] However, there are the following problems in actual use:

[0005] Most of the mixed sewage is a mixture of water, such as oil, washing liquid, food residue, etc., and a small part is a solvent of water, such as salt, acid, alkali, etc.

[0006] During the discharge process, oil and water form an emulsion. Although it will still be on the top of the sewage, it will inevitably be discharged from the rainwater outlet during the discharge process. At the same time, some food residues will be carried by the water flow when entering the buffer tank with the sewage, and then discharged from the water outlet. Therefore, it is not conducive to the separation of rainwater and sewage. Summary of the Invention

[0007] The purpose of the present invention is to provide a dual-buffer tank intelligent rainwater and sewage diversion system and device to solve the existing problems.

[0008] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0009] The present invention provides a dual-buffer tank intelligent rainwater and sewage diversion system, comprising a buffer tank a, a buffer tank b, a power supply module, a control unit module, and a rainwater collection module, wherein the buffer tank a and the buffer tank b have the same structure; a water level collection module a, a flow collection module a, and a flow electric control valve control module a are provided in the buffer tank a; a water level collection module b, a flow collection module b, and a flow electric control valve control module b are provided in the buffer tank b; the rainwater collection module is electrically connected to the control unit module and transmits rainwater collection signals to the control unit module; the control unit module is electrically connected to the water level collection module a, the flow collection module a, the flow electric control valve control module a, the water level collection module b, the flow collection module b, and the flow electric control valve control module b, respectively, for receiving collected data and sending processed control data according to a preset logic program; the power supply module is electrically connected to each of the above modules to provide power;

[0010] The rainwater collection module is used to collect the rainfall per unit time in the detection area to provide the control strategy judgment data for the control unit module;

[0011] The water level acquisition module a and the water level acquisition module b are used to collect the sewage water level height in the buffer tank a and the buffer tank b respectively;

[0012] The flow collection module a and the flow collection module b are used to collect the real-time flow of each sewage inflow and outflow of the buffer tank a and the buffer tank b respectively;

[0013] The flow electric control valve control module a and the flow electric control valve control module b are used to control the flow of sewage inflow and outflow valves installed in buffer tank a and buffer tank b respectively;

[0014] The control unit module collects various collected data and controls the electrically controlled valves installed in the buffer tank a and the buffer tank b according to a preset control strategy based on the collected data.

[0015] Preferably, the buffer tank a includes an overflow port a, a sewage inlet a, an upper sewage outlet a, a rainwater outlet a and a bottom sewage outlet a;

[0016] The overflow port a, the sewage inlet a, the upper sewage outlet a and the rainwater outlet a are all arranged on the side wall of the buffer tank a, and the bottom sewage outlet a is arranged at the bottom of the buffer tank a; the heights of the overflow port a, the upper sewage outlet a and the rainwater outlet a decrease in sequence;

[0017] Among them, the bottom sewage outlet a of the overflow outlet a is connected to the urban sewage pipe;

[0018] Among them, the rainwater outlet a of the buffer tank a is connected to the city rainwater pipe;

[0019] Among them, the sewage inlet a of the buffer tank a is connected to the sewage inlet pipe.

[0020] Preferably, the rainwater collection module includes a rainwater collection flowmeter, the water level collection module a and the water level collection module b both include water level detectors; the flow collection module a and the flow collection module b both include sewage flowmeters; the sewage inlet, upper sewage outlet, rainwater outlet and bottom sewage outlet of the buffer tank a and the buffer tank b are all provided with electric control valves, and the electric control valves installed on the buffer tank a are all electrically connected to the flow electric control valve control module a, and the electric control valves installed on the buffer tank b are all electrically connected to the flow electric control valve control module b, and the electric control valves on the buffer tank a and the buffer tank b are respectively controlled by the flow electric control valve control module a and the flow electric control valve control module b, so as to control the rate at which sewage flows into and out of the two buffer tanks.

[0021] A double-buffer tank intelligent rainwater diversion device is equipped with the above-mentioned double-buffer tank intelligent rainwater and sewage diversion system.

[0022] The present invention has the following beneficial effects:

[0023] The present invention monitors the sewage flow through a rainwater collection module, determines whether it is raining or rainstorm based on the sewage flow, and implements different sewage discharge strategies accordingly; when it is raining but not rainstorm, the mixed sewage is discharged into two buffer tanks in turn. When sewage is discharged into one buffer tank, the other buffer tank is allowed to settle and discharge sewage. Since the oil-water emulsion in the sewage will gradually separate into oil and water layers when it is left to stand in the absence of a stabilizer, and solid impurities such as food residues will sink to the bottom, when discharging sewage, the problem of sewage diversion that occurs in a single buffer tank can be effectively avoided.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a block diagram of the dual buffer tank intelligent rainwater and sewage diversion system of the present invention;

[0027] Figure 2 It is a dual buffer tank device equipped with the dual buffer tank intelligent rainwater and sewage diversion system of the present invention;

[0028] Figure 3This is a flow chart of the control method of the dual buffer tank intelligent rainwater and sewage diversion system of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1. Buffer tank a; 2. Buffer tank b; 11. Overflow port a; 12. Upper sewage outlet a; 13. Rainwater outlet a; 14. Bottom sewage outlet a; 15. Sewage inlet a; 121. Upper sewage electric control valve a; 122. Upper sewage flow meter a; 131. Rainwater electric control valve a; 132. Rainwater flow meter a; 141. Bottom sewage electric control valve a; 142. Bottom sewage flow meter a; 151. Sewage inlet electric control valve a; 21. Overflow port b; 22. Upper sewage outlet b; 23. Rainwater outlet b; 24. Bottom sewage outlet b; 25. Sewage inlet b; 221. Upper sewage electric control valve b; 222. Upper sewage flow meter b; 231. Rainwater electric control valve b; 232. Rainwater flow meter b; 241. Bottom sewage electric control valve b; 242. Bottom sewage flow meter b; 251. Sewage inlet electric control valve b; 3. Rainwater collection flow meter; 4. Sewage inlet pipe; 5. Urban rainwater pipe; 6. Urban sewage pipe. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] Example 1:

[0033] See also Figure 1 As shown, the present invention is a dual-buffer tank intelligent rainwater and sewage diversion system, including a buffer tank a1, a buffer tank b2, a power supply module, a control unit module and a rainwater collection module, wherein the buffer tank a1 and the buffer tank b2 have the same structure; the buffer tank a1 is provided with a water level collection module a, a flow collection module a and a flow electric control valve control module a; the buffer tank b2 is provided with a water level collection module b, a flow collection module b and a flow electric control valve control module b; the rainwater collection module is electrically connected to the control unit module and transmits a rainwater collection signal to the control unit module; the control unit module is electrically connected to the water level collection module a, the flow collection module a, the flow electric control valve control module a, the water level collection module b, the flow collection module b and the flow electric control valve control module b, respectively, for receiving collected data and sending processed control data according to a preset logic program; the power supply module is electrically connected to each of the above modules to provide power;

[0034] The rainwater collection module is used to collect the rainfall per unit time in the detection area to provide the control strategy judgment data for the control unit module;

[0035] Water level acquisition module a and water level acquisition module b are used to collect sewage water level height in buffer tank a1 and buffer tank b2 respectively;

[0036] Flow collection module a and flow collection module b are used to collect the real-time flow of each sewage inflow and outflow of buffer tank a1 and buffer tank b2 respectively;

[0037] The flow electric control valve control module a and the flow electric control valve control module b are used to control the flow of sewage inflow and outflow valves installed in the buffer tank a1 and buffer tank b2 respectively;

[0038] The control unit module collects various collected data and controls the electronically controlled valves installed in the buffer tank a1 and the buffer tank b2 according to the collected data and the preset control strategy.

[0039] Furthermore, the buffer tank a1 includes an overflow port a11, a sewage inlet a15, an upper sewage outlet a12, a rainwater outlet a13 and a bottom sewage outlet a14;

[0040] The overflow port a11, sewage inlet a15, upper sewage outlet a12, and rainwater outlet a13 are all arranged on the side wall of the buffer tank a1, and the bottom sewage outlet a14 is arranged at the bottom of the buffer tank a1; the heights of the overflow port a11, upper sewage outlet a12, and rainwater outlet a13 decrease in sequence;

[0041] The bottom sewage outlet a14 of the overflow outlet a11 is connected to the urban sewage pipe 6;

[0042] Among them, the rainwater outlet a13 of the buffer tank a1 is connected to the city rainwater pipe 5;

[0043] The sewage inlet a15 of the buffer tank a1 is connected to the sewage inlet pipe 4 .

[0044] Furthermore, the rainwater collection module includes a rainwater collection flowmeter, and the water level collection module a and the water level collection module b both include water level detectors; the flow collection module a and the flow collection module b both include sewage flowmeters; the sewage inlet, upper sewage outlet, rainwater outlet and bottom sewage outlet of the buffer tank a1 and the buffer tank b2 are all provided with electric control valves, and the electric control valves installed on the buffer tank a1 are all electrically connected to the flow electric control valve control module a, and the electric control valves installed on the buffer tank b2 are all electrically connected to the flow electric control valve control module b, and the electric control valves on the buffer tank a1 and the buffer tank b2 are respectively controlled by the flow electric control valve control module a and the flow electric control valve control module b, so as to control the rate at which sewage flows into and out of the two buffer tanks.

[0045] It should be further explained that the models of rainwater collection flow meters, sewage flow meters, and electric control valves should be selected with appropriate accuracy according to the capacity of the buffer tank.

[0046] Example 2:

[0047] A double-buffer tank intelligent rainwater diversion device is equipped with the above-mentioned double-buffer tank intelligent rainwater and sewage diversion system.

[0048] For easy distinction, the overflow port, sewage inlet, upper sewage outlet, rainwater outlet and bottom sewage outlet of the buffer tank a1 are named overflow port a11, sewage inlet a15, upper sewage outlet a12, rainwater outlet a13 and bottom sewage outlet a14; the overflow port, sewage inlet, upper sewage outlet, rainwater outlet and bottom sewage outlet of the buffer tank b2 are named overflow port b21, sewage inlet b25, upper sewage outlet b22, rainwater outlet b23 and bottom sewage outlet b24; at the same time, the electric control valves installed at each sewage inlet and outlet are also named with a at the end to indicate that the electric control valve is used for the buffer tank a1; and with b at the end to indicate that the electric control valve is used for the buffer tank b2.

[0049] like Figure 2 As shown, the buffer tank a1 includes an overflow port a11, an upper sewage outlet a12, a rainwater outlet a13, a bottom sewage outlet a14 and a sewage inlet a15; wherein the overflow port a11 is connected to the urban sewage pipe 6, the upper sewage outlet a12 is connected to the urban sewage pipe 6 in sequence through the upper sewage electric-controlled valve a121 and the upper sewage flow meter a122; the rainwater outlet a13 is connected to the urban rainwater pipe 5 in sequence through the rainwater electric-controlled valve a131 and the rainwater flow meter a132; the bottom sewage outlet a14 is connected to the urban sewage pipe 6 in sequence through the bottom sewage electric-controlled valve a141 and the bottom sewage flow meter a142; the sewage inlet a15 is connected to the sewage inlet pipe 4 through the sewage inlet electric-controlled valve a151;

[0050] The buffer tank b2 includes an overflow port b21, an upper sewage outlet b22, a rainwater outlet b23, a bottom sewage outlet b24, and a sewage inlet b25; wherein the overflow port b21 is connected to the urban sewage pipe 6, the upper sewage outlet b22 is connected to the urban sewage pipe 6 in sequence through the upper sewage electric-controlled valve b221 and the upper sewage flow meter b222; the rainwater outlet b23 is connected to the urban rainwater pipe 5 in sequence through the rainwater electric-controlled valve b231 and the rainwater flow meter b232; the bottom sewage outlet b24 is connected to the urban sewage pipe 6 in sequence through the bottom sewage electric-controlled valve b241 and the bottom sewage flow meter b242; the sewage inlet b25 is connected to the sewage inlet pipe 4 through the sewage inlet electric-controlled valve b251;

[0051] A rainwater collection flow meter 3 is provided on the sewage inlet pipe 4;

[0052] like Figure 3 As shown, taking heavy rain (24-hour precipitation of 50-99.9 mm) as the double buffer pool control threshold of the diversion system of the present invention, a control method of a double buffer pool intelligent rainwater diversion device is as follows:

[0053] The rainwater collection flow meter 3 is used to determine whether it is a rainy day. If it is not a rainy day, any buffer tank is selected, and the sewage inlet electric control valve and the bottom sewage electric control valve of the buffer tank are opened to discharge the sewage;

[0054] If it is rainy, the rainwater and sewage flow rate per unit time measured by the rainwater collection flow meter 3 is used to determine whether it is a heavy rain. If it is a heavy rain, the two buffer tanks are opened at the same time, and the bottom sewage electric control valve, upper sewage electric control valve and rainwater flow electric control valve of the two buffer tanks are opened to the maximum discharge capacity, and rainwater and sewage are discharged at the same time;

[0055] If it is determined that it is not a rainstorm, taking buffer tank a1 as the first to be discharged into the buffer tank, the sewage inlet electric control valve a151 is opened and the sewage inlet electric control valve b251 is closed. At this time, rainwater and sewage enter the buffer tank a1, and the sewage height in the buffer tank a1 is monitored by the water level detector in the buffer tank a1. When the water level reaches the specified level, the sewage inlet electric control valve a151 is closed and the sewage inlet electric control valve b251 is opened. At this time, the sewage in the buffer tank a1 is allowed to settle and enter the buffer tank b2. The water level detector in the buffer tank b2 monitors the sewage height in the buffer tank b2.

[0056] After a period of quiescence, the upper sewage electric control valve a121 in the buffer tank a1 is opened first, and the upper sewage flow meter a122 monitors the flow rate of discharged sewage. When the flow rate is lower than the preset threshold, it is determined that the upper sewage in the buffer tank a1 has been discharged. At this time, the upper sewage electric control valve a121 is closed, and the bottom sewage electric control valve a141 and the rainwater electric control valve a131 are opened. By controlling the flow ratio of the bottom sewage electric control valve a141 and the rainwater electric control valve a131, the sewage and rainwater are discharged separately;

[0057] After the sewage in the buffer tank a1 is discharged, the sewage inlet electric control valve a151 is opened and the sewage inlet electric control valve b251 is closed, and the above steps are repeated. At the same time, the buffer tank b2 repeats the operations in the buffer tank a1.

[0058] It should be further explained that, in this embodiment, when sewage is discharged into a buffer tank, the upper sewage electric control valve, rainwater electric control valve and bottom sewage electric control valve of the buffer tank are all in a closed state;

[0059] The standing time is related to the sewage inflow rate:

[0060] T 静 =T1-T2;

[0061] Among them, T 静 is the standing time, T1 is the time required for the sewage in the buffer tank to reach the specified amount (the water level reaches the specified position), and T2 is the time required for the buffer tank to be drained;

[0062] Among them, T1 needs to satisfy the following relationship:

[0063]

[0064] Among them, Q is the volume of sewage in the buffer tank when the water level reaches the specified position, v 进 is the inflow rate of sewage into the buffer tank, dt is the unit time;

[0065] Among them, T2 needs to satisfy the following relationship:

[0066]

[0067] Among them, t1 is the time when the upper sewage electric control valve is opened, t2 is the time when the bottom sewage electric control valve is opened, Q1 is the sewage volume above the upper sewage outlet, Q2 is the sewage volume below the upper sewage outlet, v 上 is the sewage discharge per unit time at the upper sewage outlet, v 雨 is the sewage discharge per unit time at the rainwater outlet, v 底 is the sewage discharge per unit time of the bottom sewage outlet;

[0068] where v上 、v 雨 、v 底 The data are measured by the upper sewage flow meter, rainwater flow meter and bottom sewage flow meter respectively;

[0069] From the above relationship, it can be seen that the greater the inflow of mixed sewage, the shorter the static sedimentation time. Although this will reduce the effect of static sedimentation, it still has a better rainwater and sewage diversion effect than a single buffer tank.

[0070] After the sewage is left standing in the buffer tank, it will gradually be stratified into an oily layer at the top, a rainwater layer in the middle, and a sewage layer at the bottom. The amount of sewage remaining in the buffer tank is monitored in real time by various flow meters. The oily layer is discharged to the urban sewage pipe 6 through the upper sewage outlet, the sewage in the middle rainwater layer is discharged to the urban rainwater pipe 5 through the rainwater outlet, and the sewage in the bottom sewage layer is discharged from the urban sewage pipe 6, thereby achieving the separation of sewage and rainwater.

[0071] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0072] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Double buffer tank intelligent rainwater and sewage diversion system, characterized by: include: Buffer pool a, buffer pool b, power supply module, control unit module and rainwater collection module, Among them, the structures of buffer pool a and buffer pool b are the same; The buffer tank a is provided with a water level acquisition module a, a flow acquisition module a and a flow electric control valve control module a; The buffer tank b is provided with a water level acquisition module b, a flow acquisition module b and a flow electric control valve control module b; The rainwater collection module is electrically connected to the control unit module and transmits a rainwater collection signal to the control unit module; The control unit module is electrically connected to the water level acquisition module a, the flow acquisition module a, the flow electric control valve control module a, the water level acquisition module b, the flow acquisition module b and the flow electric control valve control module b respectively. The power supply module is electrically connected to the above modules to provide power; The rainwater collection module is used to collect the rainfall per unit time in the detection area; The water level acquisition module a and the water level acquisition module b are used to collect the sewage water level height in the buffer tank a and the buffer tank b respectively; The flow collection module a and the flow collection module b are used to collect the real-time flow of each sewage inflow and outflow of the buffer tank a and the buffer tank b respectively; The flow electric control valve control module a and the flow electric control valve control module b are used to control the flow of sewage inflow and outflow valves installed in buffer tank a and buffer tank b respectively; The control unit module collects various collected data and controls the electronically controlled valves installed in the buffer tank a and the buffer tank b according to the preset control strategy based on the collected data; The buffer tank a includes: an overflow port a, a sewage inlet a, an upper sewage outlet a, a rainwater outlet a and a bottom sewage outlet a; The overflow port a, the sewage inlet a, the upper sewage outlet a and the rainwater outlet a are all arranged on the side wall of the buffer tank a, and the bottom sewage outlet a is arranged at the bottom of the buffer tank a; the heights of the overflow port a, the upper sewage outlet a and the rainwater outlet a decrease in sequence; Among them, the bottom sewage outlet a of the overflow outlet a is connected to the urban sewage pipe; Among them, the rainwater outlet a of the buffer tank a is connected to the city rainwater pipe; Among them, the sewage inlet a of the buffer tank a is connected to the sewage inlet pipe.

2. The dual buffer tank intelligent rainwater and sewage diversion system according to claim 1 is characterized in that: The rainwater collection module includes a rainwater collection flowmeter, and the water level collection module a and the water level collection module b both include water level detectors; the flow collection module a and the flow collection module b both include sewage flowmeters; the sewage inlet, upper sewage outlet, rainwater outlet and bottom sewage outlet of the buffer tank a and the buffer tank b are all provided with electric control valves, and the electric control valves installed on the buffer tank a are all electrically connected to the flow electric control valve control module a, and the electric control valves installed on the buffer tank b are all electrically connected to the flow electric control valve control module b.

3. A dual buffer tank intelligent rainwater diversion device, characterized in that: Equipped with the dual buffer tank intelligent rainwater and sewage diversion system as described in claim 1 or 2.

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