CN219825523U - Sewage pipe network for preventing bad gas from leaking - Google Patents

Abstract

The utility model provides a sewage pipe network for preventing bad gas from leaking, belongs to the technical field of municipal engineering, and solves the technical problems that the bad gas is easy to leak, the environment is polluted and the human health is damaged in the existing sewage pipe network. It comprises the following steps: a bilge well; the well cover is covered on the well mouth of the sewage well; the septic tank is communicated with the sewage well through a sewage pipe; the well cover is provided with a through hole, a first one-way valve which selectively communicates the through hole with the sewage well is arranged on the well cover, and the first one-way valve is opened or closed to respectively and correspondingly allow outside air or water to flow through or prevent bad gas in the sewage well from passing through; or/and the septic tank or the sewage pipe is/are arranged to be communicated with an intelligent gas disposal device which intelligently filters and discharges bad gas existing in the septic tank or the sewage pipe to the outside. The utility model has the advantages of effectively preventing the leakage of the bad gas, avoiding environmental pollution, guaranteeing the health of human bodies and avoiding excessive accumulation and explosion of the bad gas.

Description

Sewage pipe network for preventing bad gas from leaking

Technical Field

The utility model belongs to the technical field of municipal engineering, and particularly relates to a sewage pipe network for preventing bad gas from leaking.

Background

At present, bad gas stink phenomenon appears on streets commonly existing in large cities in China, so that good impression of urban appearance is greatly reduced, stink is harmful to health of people and pollutes environment, and the bad phenomenon is closely related to benefits of people, so that the bad phenomenon needs to be solved as soon as possible.

Preliminary investigations have shown that these odors are mainly from the sewage wells at the roadside. The odor generated by the sewage well is mainly caused by natural fermentation of domestic wastewater, excrement and the like deposited in the sewage pipeline and the inspection well for a long time under anaerobic conditions, and a large amount of odor substances such as high-concentration sulfides such as hydrogen sulfide, mercaptan, amine and the like and nitrogen compounds and the like can be generated in the anaerobic fermentation process, so that the odor problem is caused by the fact that the odor substances are leaked into the air through the sewage well.

Meanwhile, the anaerobic fermentation process is accompanied by the generation of a large amount of methane which is another bad gas, and the methane is harmful to the health of human bodies, and has explosion risks, thereby bringing serious threat to municipal safety and resident health.

Therefore, it is needed to provide a sewage pipe network capable of effectively preventing the leakage of bad gas, avoiding environmental pollution and guaranteeing the health of human bodies.

Disclosure of Invention

In view of the above, the utility model provides a sewage pipe network for preventing bad gas from leaking, which is used for solving the technical problems of easy leakage of bad gas, environmental pollution and damage to human health of the existing sewage pipe network.

The utility model adopts the technical scheme that:

the utility model provides a sewage pipe network for preventing bad gas from leaking, which comprises the following components: a bilge well; the well cover is covered on the well mouth of the sewage well; the septic tank is communicated with the sewage well through a sewage pipe; the well cover is provided with a through hole, a first one-way valve which selectively communicates the through hole with the sewage well is arranged on the inner side surface of the well cover facing the sewage well, and the first one-way valve is opened or closed to respectively and correspondingly allow outside air or water to flow through or prevent bad gas in the sewage well from passing through; or/and the septic tank or the sewage pipe is communicated with an intelligent gas disposal device which intelligently filters bad gas in the septic tank or the sewage pipe and discharges the bad gas to the outside.

Further, the first check valve moves according to a pressure difference between an internal force received in the sewage well and a first external force from an atmospheric pressure outside the well lid or a pressure difference between a second external force from a sum of the first external force and a water pressure generated by a water flow flowing into the through hole, when the internal force is smaller than the first external force, the first check valve opens to allow air from an outside of the well lid to pass through and into the sewage well, when the internal force is smaller than the second external force, the first check valve opens to allow the water flow to pass through and into the sewage well, and when the internal force is greater than or equal to the first external force or the second external force, the first check valve closes to prevent the bad air from passing through and to leak out through the through hole.

Further, the first check valve is arranged in a communication frame, the communication frame comprises a connecting pipe and a fixing flange arranged at one end of the communicating pipe, a first inner pipe and a second inner pipe with respective central lines being coincident are arranged in the communicating pipe, the first aperture of the first inner pipe is smaller than the second aperture of the second inner pipe and is located at one end far away from the well cover, the first inner pipe is connected with the through hole, the first aperture of the first inner pipe is larger than the third aperture of the through hole, the fixing flange is fixed with the inner side face of the well cover through a fixing piece, and the first check valve is arranged at a step formed between the first inner pipe and the second inner pipe.

Further, the sewage wells and the well covers are correspondingly covered on the well heads of the corresponding sewage wells, the sewage wells are communicated with the septic tanks through a plurality of sewage pipes, the tops of the septic tanks are provided with vent holes or/and pipe openings, the vent holes or/and the pipe openings are used for being respectively communicated with an exhaust pipe, the intelligent gas disposal device is fixedly communicated with the exhaust ports of the corresponding exhaust pipes, the intelligent gas disposal device comprises exhaust fans and adsorbent boxes, the exhaust fans comprise control circuit boards, and the exhaust fans are controlled by the control circuit boards to drive the septic tanks communicated with the exhaust pipes or/and bad gases in the sewage pipes to be filtered through the adsorbent boxes and then discharged to the outside.

Further, the intelligent gas treatment device further comprises a conducting pipe which is fixed with the exhaust port in a sealing mode, a top frame which is inserted into the free end of the conducting pipe and is communicated with the conducting pipe, the exhaust pipe is communicated with the outside air through the conducting pipe and the top frame, the exhaust fan is fixed in the top frame, the intelligent gas treatment device further comprises a second one-way valve, a circle of supporting ring is fixed on the inner surface of the conducting pipe close to the exhaust port, the second one-way valve is arranged on the supporting ring, and the second one-way valve is used for closing the communication between the conducting pipe and the exhaust pipe initially.

Further, the intelligent gas treatment device further comprises a pressure sensor, the pressure sensor is arranged on the inner surface of the guide pipe and is located below the second one-way valve, the pressure sensor is electrically connected with the control circuit board, the pressure sensor detects the air pressure generated by bad air in the exhaust pipe to obtain a detected air pressure value and compares the detected air pressure value with one atmosphere pressure value of the outside air, when the detected air pressure value is larger than one atmosphere pressure value, the pressure sensor transmits a start signal for starting the exhaust fan to the control circuit board, and when the detected air pressure value is smaller than or equal to one atmosphere pressure value, the pressure sensor transmits a stop signal for stopping the exhaust fan to the control circuit board.

Further, a trigger switch electrically connected with the control circuit board is arranged on the support ring, in an initial state, the edge of the second one-way valve is propped against the trigger switch, when the air pressure value in the pipe in the guide pipe is larger than one atmospheric pressure value, the edge of the second one-way valve is far away so as to open the communication between the guide pipe and the exhaust pipe, and the trigger switch is not propped against the pressure any more so as to generate and transmit a starting signal for starting the exhaust fan to the control circuit board; when the air pressure value in the pipe is smaller than or equal to one atmospheric pressure value, the edge of the second one-way valve is propped against the trigger switch to close the communication between the guide pipe and the exhaust pipe, and the trigger switch is generated due to the propping action and transmits a closing signal for closing the exhaust fan to the control circuit board.

Further, the intelligent gas treatment device further comprises a rain cover arranged at the opening of the top frame facing the outside, the adsorbent box is arranged in the guide pipe and is positioned between the exhaust fan and the second one-way valve, and the adsorbent box is filled with activated carbon and ferric oxide.

Further, the first check valve and the second check valve both comprise a first valve block, a second valve block, a rotating shaft and an elastic piece, the rotating shaft passes through the center line of the first inner tube or the supporting ring, the first valve block and the second valve block receive the elastic force of the elastic piece and can rotate around the rotating shaft, the first valve block and the second valve block of the first check valve are initially in movable propping pressure with the step so as to form a channel for air or water to flow into the well, the first valve block and the second valve block of the second check valve are initially in sealing propping pressure with the supporting ring so as to close the flow channel of the bad gas, and under the action of the elastic force and the pressure difference at two sides, when the valve block is in a closed state, the two valve blocks are relatively unfolded so as to prop against and seal the step or the supporting ring so as to close the flow channel of the bad gas or the water, and when the valve block is in an open state, the two valve blocks are relatively folded so as to leave the step or the supporting ring.

Further, be equipped with level sensor in the top outside of sewer pipe, all be equipped with level sensor at the inboard top of sewer well and septic tank, each level sensor all is used for monitoring the long-pending mud degree of depth and all is connected with outside monitoring device communication, and monitoring device determines whether to need cleaning operation according to the monitoring value of the long-pending mud degree of depth that sewer well, sewer pipe and septic tank correspond.

In summary, the sewage pipe network for preventing the leakage of the bad gas provided by the utility model has the beneficial effects that the first one-way valve is arranged on the inner side surface of the well cover facing the sewage well or/and the communicated intelligent gas disposal device is arranged on at least one of the septic tank and the sewage pipe, so that the following two aspects of beneficial effects are obtained: on the one hand: can allow outside air or rivers to flow into the bilge well through-hole and first check valve in proper order and can prevent that the foul smell that the bilge well was caused by natural fermentation under anaerobic condition of sewage pipe and long-term deposited domestic waste water and excrement and urine etc. in the inspection shaft from discharging from the through-hole, on the other hand: the filter can filter the bad gas and discharge the bad gas to the outside, and can avoid leakage or explosion caused by the excessive accumulation of the bad gas.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings required to be used in the embodiments of the present utility model will be briefly described, and it is within the scope of the present utility model to obtain other drawings according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall construction of a sewage pipe network for preventing leakage of bad gas according to an embodiment of the present utility model;

FIG. 2 is a top view showing the structure of a manhole cover of a sewage pipe network for preventing leakage of bad gas according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view corresponding to A-A of FIG. 2;

FIG. 4 is a schematic view of the structure corresponding to the direction B of FIG. 2;

FIG. 5 is a partial enlarged view corresponding to FIG. 1 at C;

FIG. 6 is a partial enlarged view corresponding to D or E of FIG. 1;

parts and numbers in the figures:

1. a bilge well; 2. a well cover; 21. a through hole; 3. a septic tank; 31. a vent hole; 4. a sewage pipe; 41. a pipe orifice; 5. a first one-way valve; 51. a first valve plate; 52. a second valve plate; 53. a rotating shaft; 54. an elastic member; 6. an intelligent gas handling device; 61. an exhaust fan; 62. an adsorbent cartridge; 63. a conduit; 64. a top frame; 65. a support ring; 66. a second one-way valve; 67. a rain cover; 7. a communication frame; 71. a connecting pipe; 72. a fixing flange; 73. a first inner tube; 74. a second inner tube; 75. a step; 8. a fixing member; 9. and an exhaust pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. If not conflicting, the embodiments of the present utility model and the features of the embodiments may be combined with each other, which are all within the protection scope of the present utility model.

Referring to fig. 1 to 6, as an object of the present utility model, there is provided a sewage pipe network for preventing leakage of bad gas, comprising a sewage well 1, a well lid 2, and a septic tank 3, wherein the well lid 2 is covered on a well head of the sewage well 1. The septic tank 3 is in communication with the sewage well 1 via a sewage pipe 4. The well cover 2 is provided with a through hole 21, and the odor mainly leaks from the through hole 21 on the well cover 2, so in the embodiment of the sewage pipe network, only one through hole 21 is arranged on the well cover 2, a first one-way valve 5 which selectively communicates the through hole 21 with the sewage well 1 is arranged on the inner side surface of the well cover 2 facing the sewage well 1, and the first one-way valve 5 is opened or closed to respectively and correspondingly allow outside air or water flow to pass through or prevent bad gas existing in the sewage well 1 from passing through; or/and the septic tank 3 or the sewage pipe 4 is/are arranged to communicate with an intelligent gas disposal device 6, and the intelligent gas disposal device 6 intelligently filters and discharges the bad gas existing in the septic tank 3 or the sewage pipe 4 to the outside. Specifically, in order to effectively prevent the leakage of the bad gas, the following two aspects can be adopted: on the one hand, by installing the first one-way valve 5 on the inner side surface of the well cover 2 facing the sewage well 1, by utilizing the opening of the first one-way valve 5, the outside air or water flow can be allowed to flow into the sewage well 1 through the through hole 21 and the first one-way valve 5 in sequence, and by utilizing the closing of the first one-way valve 5, the odor in the sewage well 1, which is caused by natural fermentation under anaerobic conditions of the sewage pipe 4 and the domestic wastewater and the excrement deposited in the inspection well for a long time, can be prevented from being discharged from the through hole 21; on the other hand, at least one of the septic tank 3 and the sewage pipe 4 is communicated with the intelligent gas disposal device 6, and the intelligent gas disposal device 6 can filter the bad gas and discharge the bad gas to the outside such as an open space above the ground, thereby avoiding leakage or explosion due to excessive accumulation of the bad gas. Therefore, the implementation of the two aspects can obtain the beneficial effects of effectively preventing the leakage of bad gas, avoiding environmental pollution and guaranteeing the health of human bodies.

Specifically, the first check valve 5 moves according to a pressure difference between an internal force received in the sewage well 1 and a first external force from the atmospheric pressure outside the well lid 2 or a pressure difference between the first external force and a second external force of a sum of the first external force and a water pressure generated by the water flowing into the through hole 21, the internal force being mainly an elastic force of the elastic member 54 and a pressure generated by the bad gas, and when the internal force is smaller than the first external force, the first check valve 5 is opened to allow air from the outside of the well lid 2 to pass through and into the sewage well 1, so that air flowing over the well lid 2 can pass through the through hole 21 and the first check valve 5 into the sewage well 1, thereby solving a sewage backflow problem caused by a negative pressure formed when a water flow speed in the sewage pipe 4 is large. When the internal acting force is smaller than the second external acting force, the first one-way valve 5 is opened to allow water to flow through and flow into the sewage well 1, in this way, when more accumulated water is formed on the well lid 2 due to rainfall, water sprinkling and other factors, the accumulated water forms water flow into the through hole 21 and is opened when the pressure from the water pressure is increased above the first one-way valve 5, so that the problem that the accumulated water on the well lid 2 is difficult to drain is solved. When the internal acting force is equal to or greater than the first external acting force or the second external acting force, the first check valve 5 is closed to prevent the bad gas from passing through and leaking out through the through hole 21, and therefore, when the pressure generated by the bad gas in the sewage well 1 acts on the first check valve 5 to close it, the through hole 21 is sealed, so that the bad gas cannot leak out.

With further reference to fig. 5, it is preferable that the first check valve 5 is disposed in a communication frame 7, the communication frame 7 includes a connection pipe 71 and a fixing flange 72 disposed at one end of the connection pipe, a first inner pipe 73 and a second inner pipe 74 are disposed in the connection pipe, the respective center lines of which coincide, the first inner pipe 73 has a first aperture smaller than a second aperture of the second inner pipe 74 and is located at an end far from the well lid 2, the communication frame 7 is in an inverted cup shape as a whole, the first inner pipe 73 is connected with the through hole 21 and has a first aperture larger than a third aperture of the through hole 21, the fixing flange 72 is fixed to an inner side surface of the well lid 2, i.e., a lower surface of the well lid 2, by a fixing member 8 such as a screw, the first check valve 5 is disposed at a step 75 formed between the first inner pipe 73 and the second inner pipe 74, and therefore, the first check valve 5 can be reliably fixed at a relative interval from the through hole 21, and the space between the first check valve 5 and the through hole 21 is favorable for buffering the inflowing external air and water flow and also for sensitive sensing pressure generated in the well 1 from the atmospheric pressure and bad air from the external air and the sewage well.

Additionally, as an improvement, the central axis of the through hole 21 and the central axis of the first inner tube 73 are eccentrically arranged, the first aperture and the third aperture are both set to allow the well lid 2 to be hooked into and hooked up to the well lid 2, and through the eccentric arrangement, the well lid 2 is conveniently hooked up to the well lid 2 in a turnover manner.

With further reference to fig. 1 and 6, more specifically, each of the well covers 1 and 2 is correspondingly provided with a plurality of corresponding well covers 2, each of the well covers 1 is correspondingly covered on the well mouth of the corresponding well 1, each of the well covers 1 is communicated with the septic tank 3 through a plurality of sewage pipes 4, that is, the plurality of well covers 1 are communicated with the septic tank 3 through a plurality of sewage pipes 4 in series, parallel or series, so that the septic tank 3 receives sewage collected by each of the well covers 1, the sewage comprises domestic wastewater, excrement and the like, a vent hole 31 is provided at the top of the septic tank 3 or/and a pipe mouth 41 is provided at the top of at least one of the sewage pipes 4, the vent hole 31 or/and the pipe mouth 41 is used for being respectively communicated with an exhaust pipe 9, the vent hole 31 and the pipe mouth 41 are respectively provided at the top of the septic tank 3 and the sewage pipes 4, the intelligent gas treatment device 6 is fixed in communication with the corresponding exhaust pipe 9, the intelligent gas treatment device 6 comprises an exhaust port 61 and an adsorbent box 62, the exhaust port 61 comprises a control circuit, and the control circuit 61 is controlled by the fan 61, and the exhaust port 61 is not connected with the exhaust pipe 3 or the adsorbent box is driven by the exhaust pipe 4. In this way, since sewage can generate methane, namely methane, in the sewage pipe 4, particularly the septic tank 3, the longer the time, the more methane is generated, the greater the pressure in the sewage pipe 4, particularly the septic tank 3, in order to avoid leakage or explosion caused by too great pressure of the methane in the sewage pipe network, the intelligent gas treatment device 6 is provided with the exhaust fan 61 and the adsorbent box 62, so that the adsorbent box 62 is used for realizing the filtration of absorbing and removing the methane in the sewage pipe 4 or/and the septic tank 3, and the exhaust fan 61 is used for driving the bad gas to accelerate to flow and discharge to the outside, thereby achieving the purpose of intelligently dredging the bad gas discharge, avoiding leakage or explosion caused by too much methane, and preventing bad gas from being discharged to the outside of, for example, a street, thereby polluting the environment and damaging the human health.

Specifically, the intelligent gas treatment device 6 further comprises a conducting pipe 63 which is fixed with the gas outlet in a sealing manner, a top frame 64 which is inserted into the free end of the conducting pipe 63 and is communicated with the conducting pipe 63, the gas outlet pipe 9 is communicated with the outside air through the conducting pipe 63 and the top frame 64, the exhaust fan 61 is fixed in the top frame 64, the intelligent gas treatment device 6 further comprises a second one-way valve 66, a circle of supporting ring 65 is fixed on the inner surface of the conducting pipe 63 close to the gas outlet, the second one-way valve 66 is arranged on the supporting ring 65, and the second one-way valve 66 is used for closing the communication between the conducting pipe 63 and the gas outlet pipe 9 initially. Therefore, the intelligent gas treatment device 6 has a compact overall structure, the filtered bad gas flows smoothly, and the second check valve 66 can be reliably fixed at a relatively interval with the exhaust fan 61, so that the adverse effect of wind pressure generated by the operation of the exhaust fan 61 on the operation of the second check valve 66 is reduced.

Specifically, the intelligent gas treatment device 6 further includes a pressure sensor (not shown) disposed on the inner surface of the conduit 63 and below the second check valve 66, the pressure sensor is electrically connected to the control circuit board, and the pressure sensor detects the air pressure generated by the bad gas in the exhaust pipe 9 to obtain a detected air pressure value and compares the detected air pressure value with one atmospheric pressure value possessed by the air of the outside, and in addition, other air pressure values may be adopted instead of one atmospheric pressure value according to actual needs in the related description of the present utility model, and it is also within the scope of the present utility model. When the detected air pressure value is greater than one atmospheric pressure value, the pressure sensor transmits a start signal for starting the exhaust fan 61 to the control circuit board, and when the detected air pressure value is less than or equal to one atmospheric pressure value, the pressure sensor transmits a stop signal for stopping the exhaust fan 61 to the control circuit board. Therefore, by configuring the pressure sensor, the pressure rise caused by the accumulation of the bad gas, especially the biogas, in the sewage pipe 4 or the septic tank 3 can be sensitively sensed, so that the exhaust fan 61 is started in time to filter and discharge the bad gas, thereby effectively preventing the occurrence of biogas leakage or explosion accidents and the direct discharge of malodorous and offensive odor to the outside.

Specifically, a trigger switch (not shown) electrically connected to the control circuit board is disposed on the support ring 65, in an initial state, the edge of the second check valve 66 presses against the trigger switch, when the air pressure value in the tube in the conducting tube 63 is greater than one atmospheric pressure value, the edge of the second check valve 66 is far away to open the communication between the conducting tube 63 and the exhaust tube 9, and the trigger switch is no longer pressed to generate and transmit a start signal for starting the exhaust fan 61 to the control circuit board; when the air pressure value in the pipe is less than or equal to one atmospheric pressure value, the edge of the second one-way valve 66 presses the trigger switch to close the communication between the conduction pipe 63 and the exhaust pipe 9, and the trigger switch is generated by the pressing action and transmits a shut-down signal to the control circuit board to shut down the exhaust fan 61. Therefore, by configuring the trigger switch, the movement of the second check valve 66 caused by the difference between the pressure in the sewage pipe 4 or the septic tank 3 and the external atmospheric pressure can be sensitively sensed, so that the exhaust fan 61 can be timely and accurately started or stopped, and the purposes of filtering and exhausting bad gases as required can be achieved.

Referring to fig. 6 in combination, specifically, the intelligent gas treatment device 6 further includes a rain cover 67 installed at an opening of the top frame 64 facing the outside, the rain cover 67 may be a breathable waterproof film, the adsorbent box 62 is disposed in the duct 63 and between the exhaust fan 61 and the second check valve 66, the rain cover 67 may prevent rainwater from entering the top frame 64 and the duct 63 to damage the exhaust fan 61 and the adsorbent box 62, the adsorbent box 62 is filled with activated carbon and ferric oxide, the activated carbon may physically absorb methane, and since the odor is mainly derived from hydrogen sulfide, the ferric oxide is a desulfurizing agent, and the odor of the hydrogen sulfide may be removed. In addition, the sorbent cartridge 62 also requires periodic replacement.

As will be further described with reference to fig. 3 to 6, taking the reference numerals of the respective parts of the first check valve 5 as an example, specifically, the first check valve 5 and the second check valve 66 each include a first valve plate 51, such as a semicircle, a second valve plate 52, such as a semicircle, a rotation shaft 53, and an elastic member 54, such as a torsion spring, the rotation shaft 53 passing through the center line of the first inner tube 73 or the support ring 65, the first valve plate 51 and the second valve plate 52 receiving the elastic force of the elastic member 54 and being rotatable about the rotation shaft 53, the first valve plate 51 and the second valve plate 52 of the first check valve 5 initially being movably pressed against the step 75, in which case the elastic force received by the first valve plate 51 and the second valve plate 52 is small so as to initially be abutted against the step 75 only but relatively movable to be separated from the step 75 under the action of air and water flow, so as not to seal the step 75, so that a passage through which air or water flows freely into the sewage well 1 can be formed, the first valve plate and the second valve plate of the second one-way valve 66 initially abut against the supporting ring 65, in which case the elastic force received by the first valve plate and the second valve plate is relatively large so as to initially ensure that a relatively large abutting force is applied to the supporting ring 65 to seal the supporting ring 65, thereby closing the flow passage of the bad gas, and the first valve plate 51 and the second valve plate 52 are relatively unfolded under the action of the elastic force and the pressure difference between the two sides, when in the closed state, for example, to form a whole circle and abut against the step 75 or the supporting ring 65, thereby closing the flow passage of the bad gas, and when in the open state, the two valve plates are relatively folded to leave the step 75 or the supporting ring 65, thereby opening the flow passage of the air and the bad gas or the water. As a preferred embodiment, the edges of the first valve plate 51 and the second valve plate 52 are sealed by silicone rubber gaskets, two ends of the rotating shaft 53 are in a turnover sealing design, a torsion spring is wound around the middle part of the rotating shaft 53 so that two ends of the torsion spring are propped against the two valve plates, and two ends of the torsion spring of the first one-way valve 5 respectively apply upward propping force to the two valve plates to be slightly less than one atmosphere pressure, so that the two valve plates are in an incomplete sealing idle state normally. The two ends of the torsion spring of the second one-way valve 66 respectively apply downward pressing force to the two valve plates to be slightly larger than one atmosphere, so that the two valve plates are in a completely sealed idle state normally. Therefore, the first check valve 5 and the second check valve 66 can sensitively sense the pressure difference between both sides thereof to thereby achieve reliable closing and opening, ensuring the functions required to achieve the above-described first check valve 5 and second check valve 66.

Optionally, because the sludge formed by the sludge and the impurities stored in the sewage pipe 4, the sewage well 1 and the septic tank 3 is in a state that the three are in coexistence of gas phase, liquid phase and solid phase substances, the gas-liquid-solid phase substances can be exchanged to generate toxic and harmful gas, in order to reduce the generation of the toxic and harmful gas from the root, the sludge quantity in the three is reduced, and the storage time of the sludge is shortened, therefore, it is particularly important to timely perform operation and maintenance such as cleaning and flushing of the sewage pipe 4, the sewage well 1 and the septic tank 3, based on the above, the embodiment provides an automatic monitoring and controlling method for the sludge depth, and determines the specific azimuth of at least one of the sewage well 1, the sewage pipe 4 and the septic tank 3 to be cleaned according to the monitoring and controlling value of the sludge depth, so that the sludge quantity can be timely and effectively reduced, and the storage time of the sludge is shortened. As an implementation manner, each liquid level sensor can communicate with the cloud server in a wireless communication manner such as 4G, 5G and the like and upload monitoring data, the cloud server transmits the monitoring data to an external monitoring device adopted by a user such as a sewage pipe network manager, and corresponding sludge depth threshold information is pre-stored in the monitoring device, so that whether sludge is too deep or not or whether the depth holding time is too long can be judged by comparing the sludge depth monitoring values with the sludge depth threshold values, and further related prompts of whether cleaning operation is needed or not are generated and displayed to the user. The cleaning operation is performed by means of hydraulic flushing, mechanical dredging, manual digging, or the like. In addition, for the sewage pipe 4, in order to maintain the normal use function, the sludge depth value in the sewage pipe 4 needs to be lower than 1/5 of the pipeline diameter value throughout the year, so that the sludge depth threshold value of the sewage pipe 4 is set to be 1/5 of the corresponding pipeline diameter value, the phenomena of blockage and unsmooth drainage of the sewage pipe 4 are avoided, and sewage generated by a user can be smoothly discharged into the septic tank 3. The septic tank 3 is cleaned by means of manual and mechanical methods, cleaning cycles of the septic tank 3 are timely and regularly carried out, the cleaning cycles are not less than 3 times per year, the cleaned septic tank 3 can see a bottom plate, floating impurities are not arranged in a water outlet well of the septic tank 3, flowing sewage is visually free of floating impurities or suspended matters with large particle size, the pretreatment effect of the septic tank 3 on sludge is exerted, and the aim of radically reducing the generation of toxic and harmful gases is fulfilled.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. Prevent dirty water pipe network that bad gas leaked, its characterized in that includes:

a bilge well;

the well cover is covered on the well mouth of the sewage well;

a septic tank communicated with the sewage well through a sewage pipe;

the well cover is provided with a through hole, a first one-way valve which selectively communicates the through hole with the sewage well is arranged on the inner side surface of the well cover facing the sewage well, and the first one-way valve is opened or closed to respectively and correspondingly allow outside air or water flow to pass through or prevent bad gas existing in the sewage well from passing through; or/and the septic tank or the sewage pipe is communicated with an intelligent gas disposal device which intelligently filters bad gas in the septic tank or the sewage pipe and discharges the bad gas to the outside.

2. The sewage network of claim 1, wherein the first check valve moves according to a pressure difference between an internal force received in the sewage well and a first external force from an atmospheric pressure outside the well lid or a second external force from a sum of the first external force and a water pressure generated by a water flow flowing into the through hole, the first check valve being opened to allow air from an outside of the well lid to pass through and into the sewage well when the internal force is smaller than the first external force, the first check valve being opened to allow the water flow to pass through and into the sewage well when the internal force is smaller than the second external force, and being closed to prevent the bad gas from passing through and from leaking out through the through hole when the internal force is greater than or equal to the first external force or the second external force.

3. The sewage pipe network according to claim 1, wherein the first check valve is disposed in a communication frame, the communication frame includes a connecting pipe and a fixing flange disposed at one end of the connecting pipe, a first inner pipe and a second inner pipe are disposed in the connecting pipe, respective center lines of the first inner pipe are coincident, the first inner pipe has a first aperture smaller than a second aperture of the second inner pipe and is located at an end far from the well lid, the first inner pipe is connected with the through hole and the first aperture is larger than a third aperture of the through hole, the fixing flange is fixed with an inner side surface of the well lid by a fixing member, and the first check valve is disposed at a step formed between the first inner pipe and the second inner pipe.

4. A sewage pipe network according to claim 3, wherein the sewage well and the well covers are respectively provided in a plurality of corresponding ways, each well cover is correspondingly covered on a well mouth of the corresponding sewage well, each sewage well is communicated with the septic tank through a plurality of sewage pipes, a vent hole or/and a pipe orifice is/are arranged at the top of at least one sewage pipe, the vent hole or/and the pipe orifice are respectively communicated with an exhaust pipe, the intelligent gas disposal device is fixedly communicated with an exhaust port of the corresponding exhaust pipe, the intelligent gas disposal device comprises an exhaust fan and an adsorbent box, the exhaust fan comprises a control circuit board, and the exhaust fan is controlled by the control circuit board to drive the bad gas in the septic tank or/and the sewage pipe communicated with the exhaust pipe to be filtered through the adsorbent box and further discharged to the outside.

5. The sewage pipe network of claim 4, wherein the intelligent gas treatment device further comprises a conducting pipe which is fixed with the exhaust port in a sealing manner, a top frame which is inserted into the free end of the conducting pipe and is communicated with the conducting pipe, the exhaust pipe is communicated with the outside air through the conducting pipe and the top frame, the exhaust fan is fixed in the top frame, the intelligent gas treatment device further comprises a second one-way valve, a circle of supporting ring is fixed on the inner surface of the conducting pipe, which is close to the exhaust port, the second one-way valve is arranged on the supporting ring, and the second one-way valve is used for initially closing the communication between the conducting pipe and the exhaust pipe.

6. The sewage pipe network of claim 5, wherein the intelligent gas treatment device further comprises a pressure sensor, the pressure sensor is arranged on the inner surface of the conduit and is located below the second one-way valve, the pressure sensor is electrically connected with the control circuit board, the pressure sensor detects the air pressure generated by the bad gas in the exhaust pipe to obtain a detected air pressure value and compares the detected air pressure value with one atmospheric pressure value of the outside air, when the detected air pressure value is greater than one atmospheric pressure value, the pressure sensor transmits a start signal for starting the exhaust fan to the control circuit board, and when the detected air pressure value is less than or equal to one atmospheric pressure value, the pressure sensor transmits a stop signal for stopping the exhaust fan to the control circuit board.

7. The sewage pipe network of claim 5, wherein a trigger switch electrically connected with the control circuit board is arranged on the supporting ring, in an initial state, the edge of the second one-way valve is propped against the trigger switch, when the air pressure value in the pipe is greater than one atmospheric pressure value, the edge of the second one-way valve is far away so as to open the communication between the pipe and the exhaust pipe, and the trigger switch is not propped against the trigger switch any more, so that a starting signal for starting the exhaust fan is transmitted to the control circuit board; when the air pressure value in the pipe is smaller than or equal to one atmospheric pressure value, the edge of the second one-way valve presses the trigger switch to close the communication between the conduction pipe and the exhaust pipe, and the trigger switch is generated due to the pressing action and transmits a closing signal for closing the exhaust fan to the control circuit board.

8. The sewage pipe network of claim 5, wherein,

the intelligent gas treatment device further comprises a rain cover arranged at an opening of the top frame facing the outside, the adsorbent box is arranged in the guide pipe and is positioned between the exhaust fan and the second one-way valve, and activated carbon and ferric oxide are filled in the adsorbent box.

9. The sewage pipe network of claim 5, wherein,

the first check valve and the second check valve comprise a first valve block, a second valve block, a rotating shaft and an elastic piece, the rotating shaft passes through the center line of the first inner tube or the supporting ring, the first valve block and the second valve block receive elastic acting force of the elastic piece and can rotate around the rotating shaft, the first valve block and the second valve block of the first check valve are initially movably pressed against the step so as to form a channel for air or water to flow into a well, the first valve block and the second valve block of the second check valve are initially sealed against the supporting ring so as to close a flow channel for bad gas, and under the action of the elastic acting force and pressure difference at two sides, the first valve block and the second valve block are relatively unfolded so as to press against and seal the step or the supporting ring so as to close the flow channel for bad gas, and when the first valve block and the second valve block are in an open state, the first valve block and the second valve block are relatively folded so as to leave the step or the supporting ring so as to open the flow channel for the bad gas or the water to flow.

10. The sewage pipe network of claim 1, wherein,

the sewage treatment device is characterized in that a liquid level sensor is arranged on the outer side of the top of the sewage pipe, liquid level sensors are arranged on the tops of the inner sides of the sewage well and the septic tank, each liquid level sensor is used for monitoring the sludge accumulation depth and is in communication connection with an external monitoring device, and the monitoring device determines whether cleaning operation is needed according to the monitoring value of the sludge accumulation depth corresponding to the sewage well, the sewage pipe and the septic tank.