Building intelligent septic tank monitoring system

Abstract

The utility model discloses a kind of building intelligent septic tank monitoring systems, including septic tank, overhauling and digging mouth is provided at the top of septic tank, partition is equipped in septic tank and is spaced, partition is distributed with water hole, branch pipe is equipped in septic tank upper, branch pipe is connected with septic tank special vent riser extending to septic tank through converging pipeline, vent hole is provided on branch pipe, two branches are equipped on septic tank special vent riser, one branch is connected with the air breather static pressure tank being set outside septic tank through electric valve, another branch is connected with the air breather static pressure tank through fan, exhaust pipe is equipped on the air breather static pressure tank, air breather static pressure tank is equipped with marsh gas detector, marsh gas detector is electrically connected with controller, dosing tank connected through dosing pipeline is arranged between septic tank special vent riser and two branches, water inlet pipeline and water outlet pipeline connected with sewage well are equipped on opposite ends of septic tank.Compared with prior art, the safety hazard of biogas is eliminated.

Description

Technical Field

[0001] This utility model relates to a domestic water supply and drainage system, and more particularly to an intelligent septic tank monitoring system for buildings. Background Technology

[0002] Article 4.5.9 of the "Code for Design of Building Water Supply and Drainage" (GB50015-2019) stipulates that septic tanks must be equipped with vent pipes in the design of domestic drainage systems to ensure that the gas inside the septic tank can be discharged smoothly and to prevent safety hazards caused by gas accumulation. However, in modern and old building projects, due to a combination of factors such as the tank's structure and the limited area of ​​the vent pipe locations, septic tanks are prone to accumulating biogas and odor within the tank. Currently, some patented technologies on the market, such as those with explosion-proof holes and chambers on the septic tank sidewalls, merely buffer against biogas explosions. Other technologies allow biogas in the septic tank to diffuse into the municipal sewage pipes through perforated plates, only diluting the concentration of biogas in the tank to the upper limit. These methods cannot completely eliminate safety hazards at the source. In addition, septic tanks in large commercial building complexes require regular cleaning, which results in odors emanating from the tanks during operations. If not cleaned in time, the odorous gases will continue to overflow from the septic tank floor due to positive pressure, impacting the commercial environment. This is especially true in busy locations in first-tier cities, where septic tanks are often located at main entrances and exits, where vehicles and pedestrians are densely packed. Therefore, it is urgent to improve the automatic monitoring of biogas concentration in septic tanks based on the "Code for Design of Building Water Supply and Drainage" GB50015-2019, while also automatically eliminating the safety hazards caused by increased biogas concentration in septic tanks and solving the environmental impact of odors during septic tank cleaning operations. Utility Model Content

[0003] The purpose of this utility model is to provide an intelligent septic tank monitoring system for buildings. The technical problem to be solved is to monitor and discharge the biogas concentration in the septic tank, thereby eliminating the safety hazards caused by biogas accumulation.

[0004] To solve the above problems, this utility model adopts the following technical solution: an intelligent septic tank monitoring system for buildings, including a septic tank, with an inspection and cleaning port at the top of the septic tank, and a sealing device for sealing the inspection and cleaning port. The septic tank is equipped with partitions that divide the interior into multiple spaces spaced apart, with water passage holes distributed on the partitions. A number of branch pipes, equal to the number of spaces, are provided above the septic tank. These branch pipes are connected to a dedicated septic tank ventilation riser extending outside the septic tank via a converging pipe. Ventilation holes are provided on the branch pipes, and a [missing information - likely a device or system] is provided on the dedicated septic tank ventilation riser. There are two branches. One branch is connected to the ventilated static pressure box located outside the septic tank via an electric valve, and the other branch is connected to the ventilated static pressure box via a blower. The ventilated static pressure box is equipped with an exhaust pipe and a biogas detector. The biogas detector is electrically connected to a controller located outside the septic tank. The controller is also electrically connected to the electric valve and the blower. A dosing tank is set between the septic tank's dedicated ventilation riser and the two branches via a dosing pipe, so that the branch pipe can be used as a dosing pipe when adding chemicals. At opposite ends of the septic tank, there are inlet and outlet pipes connected to the sewage well.

[0005] Furthermore, the dosing pipe is equipped with a water trap.

[0006] Furthermore, the water seal height in the water trap is not less than 150mm.

[0007] Furthermore, the maintenance and cleaning equipment consists of two parts.

[0008] Furthermore, all the branch pipes are located close to the maintenance and cleaning port.

[0009] Furthermore, the ventilated static pressure box is made of stainless steel and has an effective volume of less than 1 cubic meter.

[0010] Furthermore, the fan is an explosion-proof negative pressure fan.

[0011] Furthermore, the external static pressure of the fan is no greater than 1200 Pa, and the air volume is 500-1000 m³ / h. 3 / h.

[0012] Furthermore, the inlet pipe and outlet pipe are respectively located near the top of the septic tank, and guide plates are respectively installed at the top of the septic tank near the inlet pipe and outlet pipe.

[0013] Furthermore, the guide plate overlaps with the partition portion.

[0014] Compared with the prior art, this utility model has the following advantages: A branch pipe is installed at the top of the septic tank, connected to a dedicated venting riser. Two paths are installed on the dedicated venting riser, each connected to a venting static pressure box via an electric valve and a blower. The venting static pressure box is connected to an exhaust pipe. A biogas detector is installed on the venting static pressure box to monitor the concentration of biogas entering the box. When the concentration exceeds a preset value, the controller activates the blower for mechanical ventilation, thus eliminating the safety hazard of biogas. Furthermore, the dosing tank is connected to the dedicated venting riser, allowing the branch pipe to be used as a dosing pipeline after dosing. This avoids the problem of uneven mixing of the chemicals with the sewage in the tank, which would otherwise require opening the maintenance and cleaning port for dosing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the branch pipe distribution of this utility model. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 and Figure 2As shown, this utility model discloses an intelligent septic tank monitoring system, including a septic tank 1. A maintenance and cleaning port 11 is provided on the top of the septic tank 1, and a sealing device is provided on the maintenance and cleaning port 11 for sealing connection. The septic tank 1 can be a precast tank or cast on-site with concrete. An inlet pipe 15 and an outlet pipe 16 are provided at opposite ends of the septic tank 1 and near the top of the septic tank 1, respectively. The inlet pipe 15 and the outlet pipe 16 are respectively connected to nearby sewage wells. A guide plate 18 is provided on the top of the septic tank 1 near the inlet pipe 15 and the outlet pipe 16, respectively. The guide plate 18 is used for... The septic tank buffers the flow rate of sewage entering and exiting, acting as a buffer to settle fecal matter and debris, preventing untreated sewage from being directly discharged into the municipal sewer network. The septic tank 1 is divided into multiple spaces by partitions 2 spaced apart. These partitions extend from the inlet pipe 15 towards the outlet pipe 16, with their bottoms reaching the bottom of the septic tank 1 and their tops spaced apart from the top of the septic tank 1. A guide plate 18 partially overlaps with the partition 2, and the partitions 2 have drainage holes 21. A number of branch pipes 3, matching the number of spaces, extend above the septic tank 1, their extension direction mirroring the arrangement of the partitions 2. The branch pipe 3 is vertically oriented and connects to the septic tank-specific ventilation riser 5 extending outside the septic tank 1 via the confluence pipe 4. Ventilation holes 31 are provided on the branch pipe 3 to facilitate the collection of biogas from the septic tank. The septic tank-specific ventilation riser 5 has two branches: one connects to the ventilated static pressure box 6 located outside the septic tank 1 via an electric valve 7, and the other connects to the ventilated static pressure box 6 via a blower 8. The ventilated static pressure box 6 can be installed on a building floor or in an equipment room. An exhaust pipe 9 is provided on the ventilated static pressure box 6, extending to unoccupied areas such as the building roof for emission. A biogas detector 1 is provided on the ventilated static pressure box 6. 0. The biogas detector 10 is electrically connected to the controller 12 installed outside the septic tank 1. The controller 12 is also electrically connected to the electric valve 7 and the blower 8. The controller 12 can be installed in the monitoring room. The controller 12 adopts existing technology. By setting a preset value, it controls the blower 8 to work and closes the electric valve 7 after the preset value is reached, or controls the electric valve 7 to be normally open when the blower 8 stops working. A dosing tank 14 is installed between the septic tank dedicated ventilation riser 5 and the two branches through a dosing pipe 13, so that the branch pipe 3 can be used as a dosing pipe when dosing. The dosing tank 14 can be installed on any floor of the building to facilitate the dosing of deodorizing agents.

[0019] like Figure 1 As shown, a water trap 17 is provided on the dosing pipe 13. Specifically, the water seal height in the water trap 17 is not less than 150mm to prevent the air in the dosing tank 14 from being drawn into the drain outlet due to the negative pressure of the septic tank vent riser 5 when the blower is started, thus affecting the ventilation effect. The water seal height depends on the external static pressure of the blower. For example, if the external static pressure is greater than 1200Pa, the water seal height is set to 300mm.

[0020] like Figure 1 As shown, in one embodiment of this utility model, there are two inspection and cleaning ports 11, which are symmetrically arranged on the top of the septic tank 1. The sealing device adopts a mechanical seal, which is the prior art and will not be described in detail here.

[0021] like Figure 2 As shown, the branch pipes 3 are all located near the maintenance and cleaning port 11. The branch pipes 3 are D100 type pipes. The merging pipes 4 and the septic tank-specific venting riser 5 are both D150 type pipes. The venting holes 31 are distributed around the perimeter of the branch pipes 3. Optionally, they can be densely arranged on the surface facing the bottom of the septic tank, and sparsely arranged on the rest. The diameter of the venting holes 31 is 10mm, and multiple venting holes 31 can be distributed in a quincunx pattern.

[0022] In this utility model, the ventilated static pressure box 6 is made of 2mm stainless steel and has an effective volume of ≤1 cubic meter. The biogas gas detector 10 is installed on the top of the ventilated static pressure box. The biogas gas detector 10 is short-circuited through a D20 internal thread connector. The D20 internal thread connector is welded to the ventilated static pressure box 6. The biogas gas detector 10 adopts a current of 20mA or an RS485 protocol model and has a working voltage of DC between 20-30V.

[0023] In this utility model, the fan 8 is an explosion-proof negative pressure fan, which has an explosion-proof fan control box. The explosion-proof fan control box is electrically connected to the controller 12. The fan control box is equipped with a time switch to realize manual, automatic, and timed function selection. Its wiring method is existing technology and will not be described in detail here. The external static pressure of the fan 8 is not greater than 1200Pa, and the air volume is 500-1000m³ / h. 3 / h, the connection between the air outlet of the blower 8 and the ventilated static pressure box 6 is a flexible connection, which can be made by means of a soft sleeve such as a rubber sleeve. The air inlet of the blower 8 is connected to one of the branches of the septic tank special ventilation riser 5.

[0024] In this utility model, the electric valve 7 is an explosion-proof electric ball valve. Under normal conditions, it is normally open. When the biogas concentration in the ventilated static pressure box 6 reaches the set value, the electric valve 7 closes and the blower 8 is turned on.

[0025] In this utility model, the controller 12 is also connected to the monitoring room (property fire control center) to achieve linkage. When the biogas concentration reaches the set value, the controller 12 sends an alarm signal to the monitoring room, and the alarm in the monitoring room will sound an alarm after receiving the signal.

[0026] In this utility model, the fan 8 and the electric valve 7 are existing conventional and mature electrical linkage and interlocking technologies, which will not be described in detail here.

[0027] The working principle of this utility model is as follows: When the biogas (which is less dense than air) in the septic tank rises along the dedicated ventilation riser 5 to the ventilated static pressure box 6, the controller 12 receives the value from the biogas detector 10 in real time. When the concentration reaches the set value (alarm lower limit), the controller 12 automatically alarms the alarm in the monitoring room and links with the property fire control center to inform the management personnel of the potential safety risks. At the same time, it outputs an electrical signal to the explosion-proof fan control box of the blower to start the explosion-proof fan, close the electric valve on the bypass pipe, and perform mechanical ventilation of the septic tank to release the biogas in the tank into the atmosphere, automatically eliminating safety hazards. By manually or periodically turning on the blower, the odor in the septic tank can be discharged.

[0028] This utility model has the following advantages:

[0029] 1. It can automatically monitor the concentration of biogas produced in the septic tank. By using the biogas detector 10 for real-time monitoring, it can intelligently start the configured fan to perform mechanical forced ventilation and exhaust, so that the biogas in the septic tank can be discharged into the outdoor atmosphere in advance when the concentration is below the limit.

[0030] 2. Minimizes the spread of odor during septic tank cleaning. The automatic start and stop of the blower can easily create negative pressure in the septic tank, preventing odor from spreading. It is especially suitable for addressing odor problems in busy urban areas.

[0031] 3. If chemical deodorizing and decomposition agents need to be added to the septic tank, it is not necessary to manually open the septic tank inspection cover on the ground to add the agents. The agents can be added in the dosing tank (indoor or outdoor location is not limited), which can evenly disperse the agents in the septic tank and improve the efficiency and effectiveness of the dosing.

Claims

1. A building intelligent septic tank monitoring system, comprising a septic tank (1), wherein a maintenance and cleaning port (11) is provided on the top of the septic tank (1), and a sealing device with a sealing connection is provided on the maintenance and cleaning port (11), characterized in that: The septic tank (1) is provided with partitions (2) that divide the interior of the septic tank (1) into multiple spaces and are spaced apart. Water passage holes (21) are distributed on the partitions (2). The number of branch pipes (3) is the same as the number of spaces in the upper part of the septic tank (1). The branch pipes (3) are connected to the septic tank-specific ventilation riser (5) extending to the outside of the septic tank (1) through the confluence pipe (4). Ventilation holes (31) are provided on the branch pipes (3). The septic tank-specific ventilation riser (5) has two branches. One branch is connected to the ventilated static pressure box (6) located outside the septic tank (1) through an electric valve (7). The other branch is connected to the ventilated static pressure box through a blower (8). (6) Connection: An exhaust pipe (9) is provided on the ventilated static pressure box (6). A biogas gas detector (10) is provided on the ventilated static pressure box (6). The biogas gas detector (10) is electrically connected to the controller (12) located outside the septic tank (1). The controller (12) is also electrically connected to the electric valve (7) and the blower (8). A dosing tank (14) is provided between the septic tank special ventilation riser (5) and the two branches, which is connected by a dosing pipe (13) so that the branch pipe (3) can be used as a dosing pipe when dosing. An inlet pipe (15) and an outlet pipe (16) connected to the sewage well are provided at opposite ends of the septic tank (1).

2. The intelligent building septic tank monitoring system according to claim 1, characterized in that: The dosing pipe (13) is equipped with a water trap (17).

3. The intelligent building septic tank monitoring system according to claim 2, characterized in that: The water seal height in the water storage elbow (17) shall not be less than 150mm.

4. The intelligent building septic tank monitoring system according to claim 1, characterized in that: The inspection and cleaning port (11) is provided in two places.

5. The building intelligent septic tank monitoring system according to claim 4, characterized in that: All branch pipes (3) are located close to the maintenance and cleaning port (11).

6. The intelligent building septic tank monitoring system according to claim 1, characterized in that: The breathable static pressure box (6) is made of stainless steel and has an effective volume of less than 1 cubic meter.

7. The intelligent building septic tank monitoring system according to claim 6, characterized in that: The fan (8) is an explosion-proof negative pressure fan.

8. The intelligent building septic tank monitoring system according to claim 7, characterized in that: The external static pressure of the fan (8) is no greater than 1200 Pa, and the air volume is 500-1000 m³ / h. 3 / h.

9. The intelligent building septic tank monitoring system according to claim 1, characterized in that: The inlet pipe (15) and outlet pipe (16) are respectively located near the top of the septic tank (1), and guide plates (18) are respectively provided at the top of the septic tank (1) near the inlet pipe (15) and outlet pipe (16).

10. The intelligent building septic tank monitoring system according to claim 9, characterized in that: The guide plate (18) partially overlaps with the partition (2).

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