Ventilation micro-flushing sanitary pollution discharge method, device and system

Abstract

The invention discloses a draft micro-flushing sanitary pollution discharge method, device and system, a gravity type pipeline pollution discharge end point is arranged near a building, the building is connected with sanitary ware through a gravity type pollution discharge pipeline, a draft bypass and an air check valve are arranged on the gravity type pollution discharge pipeline, and through instantaneous draft operation synchronous with flushing water, the flushing water can be quickly discharged. The effect of micro-water flushing pipeline pollution discharge is achieved, and then the cost of sewage and garbage treatment is greatly reduced through recycling. Compared with a conventional water flushing pollution discharge and sewage garbage treatment system, the direct economic cost and the resource and environment cost of setting and operation of a sewage garbage treatment system including a toilet are greatly reduced. And compared with vacuum pollution discharge, the system setting and operation cost is greatly reduced, and the technical requirements and operation and maintenance are simpler.

Description

Technical Field

[0001] The invention relates to the technical field of environmental sanitation, and in particular to a method, device and system for hygienic sewage discharge by air extraction and micro-flushing. Background Art

[0002] The environmental sanitation system is a technical system that provides residents with living sanitation discharge conditions and controls the negative environmental impacts of itself and the discharge process. Feces and kitchen waste are not only the main objects of sanitary discharge, but also concentrate more than 90% of conventional pollutants in living emissions. The source discharge method of these two types of sanitary waste, especially the shape of toilets, determines the technical model of the environmental sanitation system and affects the service performance and economy of the environmental sanitation system.

[0003] Water-flushing sewage disposal is a basic configuration of modern living hygiene, and it has the following basic characteristics: first, water is used to clean the sewage chamber (toilet) after defecation, and a water seal must be formed in the toilet or in the sewage pipe connected to the toilet; second, wastewater and waste leave the indoor environment immediately and can be transferred horizontally through pipes to a place that meets hygiene and aesthetic requirements.

[0004] Conventional water flushing sewage discharge completely relies on the potential energy of the flushing water itself (such as gravitational potential energy) to provide power for the flushing of the sewage chamber, the discharge of waste from the sewage chamber to the sewage pipe (usually over the water trap), and the transfer of primary waste in the sewage pipe, so a large amount of flushing water is required. After more than 100 years of global application and development, conventional water flushing sewage discharge technology no longer has room for significant water saving. For example, the nominal water consumption of water-saving toilet-type sanitary ceramics in my country is still as high as 5 liters (GB6952-2015). As a result, the fecal and urine wastewater or kitchen wastewater collected by conventional water flushing sewage discharge has no value for use as a resource (such as fertilizer), and can only be discharged as domestic sewage and must be treated to meet standards before being discharged into nature. The economic cost and resource and environmental cost of this sanitary sewage discharge method and its subsequent sewage and garbage treatment are very high. For a long time, this field has been trying to develop a technology for micro-water flushing sanitary sewage discharge. The so-called micro-water flushing sanitary sewage discharge refers to water flushing sanitary sewage discharge with a nominal water consumption of ≤2 liters / time. The purpose of micro-flushing is not only to save water, but more importantly, to obtain high-concentration organic waste liquid while meeting the sanitation needs of modern life. The latter can be used as a fertilizer resource, thereby eliminating the need for domestic sewage treatment. (Reference: Fan Bin, Zhang Yu, Li Yahui, Lv Minghuan, Kinhoun R, Zhu Shikun, Qian Tingting. Theory and practice of comprehensive management of rural environmental sanitation resources. Environmental Protection 2021, 49(01): 24-30).

[0005] The method of using vacuum suction pipe sewage discharge can greatly reduce the amount of flushing water required for sanitary discharge such as toilets. Its basic characteristics are: toilets and other sanitary ware are connected to the vacuum pipe sewage discharge system through an interface valve. This is a negative pressure space driven by a vacuum pump and kept in a normal state of isolation from the external atmospheric environment. Through the operation of the vacuum pump, the space can maintain an environment lower than the external atmospheric pressure. The sewage discharge of sanitary ware such as toilets usually needs to be divided into three steps: the first step is to open the interface valve, and rely on the negative pressure suction force to suck the wastewater mixed with flushing water and waste into the negative pressure space; the second step is to drive the wastewater entering the negative pressure space to move to the collection container set in the negative pressure space by the negative pressure suction force; the third step is to use special technical means to transfer the wastewater in the collection ventilation set in the negative pressure space back to the atmospheric pressure environment. The special technical means include depressurizing the negative pressure space so that the internal air pressure is the same as the external atmospheric pressure, or forcibly transferring the wastewater in the negative pressure space to the atmospheric pressure environment through a sewage pump with greater suction force. The main disadvantages of vacuum pipe drainage are: (1) Generally speaking, the negative pressure space needs to store vacuum energy not higher than -20kPa, so the entire negative pressure space must be strictly sealed to prevent leakage, which leads to special technical requirements for the pipeline itself and the interface valve connecting the inside and outside of the pipeline; (2) The suction performance of the vacuum pump is high, requiring both a large suction flux and a high maximum vacuum degree, generally less than -80kPa. The above disadvantages increase the technical requirements and costs for setting up and operating the vacuum pipe drainage system, which is not conducive to its use in municipal environmental sanitation systems serving the public.

[0006] Since vacuum suction pipe drainage has the advantage of high water saving, scientific research and engineering and technical personnel have long tried to overcome the above shortcomings by improving the design. The improved vacuum pipe drainage technology currently recorded in the literature is mostly focused on the local adaptability optimization for specific application scenarios, and has not yet overcome the limitations of the vacuum drainage method. In order to circumvent patents that are still under protection, some deformed designs even sacrifice the technical and economic performance of the vacuum drainage system. "Public Toilet Feces Vacuum Self-priming Device CN 205839904 U" adopts a design that connects the horizontal drainage pipe, the vertical drainage pipe, the vacuum pump chamber and the vacuum pump in sequence after the toilet, so as to achieve the technical effect that the vacuum pump only needs to be started when the toilet is drained and the sewage can be discharged only by its own gravity. According to this design, a certain drainage effect can be achieved in two cases. One is that the pipe diameter is small enough and the suction force of the vacuum pump is large enough, so that the water discharged from the toilet always maintains a plunger flow state in the pipe. The pipe diameter of the conventional toilet sewage pipe is generally larger than this diameter requirement. Another situation is that the pipe diameter is relatively large, and it is necessary to retain an appropriate amount of water in the horizontal sewage pipe in advance. When the vacuum pump (self-priming pump) is started during sewage discharge, the water in the horizontal sewage pipe needs to be sucked into the vertical sewage pipe first to form an initial water column. When the height of the water column exceeds the surface tension of the water, the water column will be broken into small water columns, and the air below will penetrate the water column above to release bubbles, and form a phenomenon of small water columns separated by small air columns in the vertical pipe. In this case, the water column also plays the role of a vacuum interface valve that blocks the negative pressure space above and the normal pressure environment from the toilet direction, and each time an air bubble penetrates the water column upward, it is equivalent to the vacuum valve being opened once. When the small water column at the top is lifted into the vacuum pump chamber, new water columns and air columns are formed at the bottom of the vertical sewage pipe. In this way, the continuous operation of the vacuum pump can transfer all the water equivalent to one sewage discharge into the vacuum pump chamber. At this time, the vacuum pump is stopped, and the negative pressure in the vacuum pump chamber disappears immediately. At this time, the water in the vertical sewage pipe falls back to the horizontal sewage pipe, and is reserved for the next sewage discharge to serve as the initial water column. Obviously, before the sewage goes from the toilet to the vacuum pump chamber and finally leaves, the vacuum pump chamber must maintain a negative pressure state, and the transportation and transfer of water cannot be separated from the effect of vacuum suction, so it still belongs to the category of vacuum sewage discharge. It should be pointed out that although this design saves the fixed vacuum interface valve that is usually required, and does not need to maintain the vacuum space all the time, it also has significant disadvantages. First, the vacuum efficiency is low. It takes electricity to form a vacuum space that fills the entire pump chamber at the beginning. When a sewage discharge is completed, the vacuum energy stored in this vacuum space is released unnecessarily, which is not energy-efficient; second, the sewage discharge is not thorough. Each time, a part of the sewage needs to be reserved in the horizontal pipe, and the length of the horizontal pipe cannot be too small, otherwise the backflow of sewage may flow back into the toilet.

[0007] Technical products for sanitary sewage treatment, especially toilets, are different from general technical fields and daily necessities. Ordinary residents do not pay much attention to environmental performance and the subsequent sewage and garbage disposal costs. Any new technical product must have sanitary performance and cost-effectiveness that can compete with conventional flush toilets in order to be accepted by ordinary residents. So far, technical designs including various vacuum sewage treatment have not been successful in this regard. Summary of the invention

[0008] The present invention provides a method, device and system for hygienic sewage discharge by micro-flushing, aiming to overcome the defects of the prior art and achieve the goal of hygienic sewage discharge by micro-flushing. The front and rear of the sewage discharge pipeline involved in the following description of the invention method refer to the direction of water flow, the direction of incoming water is the front, and the direction of drainage is the rear.

[0009] Said method is as follows:

[0010] According to one aspect of the present invention, there is provided a method for hygienic sewage discharge by air extraction and micro-flushing, wherein: each sewage-bearing chamber for receiving domestic sanitary waste is connected to a single sewage pipeline in accordance with the principle of gravity drainage through a water trap, the total length of the pipeline with a hydraulic gradient of ≤1% in the sewage pipeline is configured to be ≤30 meters, an air extraction bypass is provided on the sewage pipeline, and an air check valve is provided on the sewage pipeline after the air extraction bypass, so that the front water can freely flow to the rear sewage pipeline through the air check valve, and can effectively prevent the rear air from entering the front sewage pipeline through the air check valve, and the air pressure in the sewage pipeline after the air check valve is always the same as the atmospheric pressure, and one of the following two control schemes A and B can be selected for sewage discharge. : A. When the air extraction bypass can be connected, a preset Q1 volume of flushing water is injected into the sewage receiving chamber at time T=0, the air extraction bypass is connected at time T=t1, the air extraction bypass is closed at time T=t1+t2, and a preset Q2 volume of flushing water is injected into the sewage receiving chamber at time T=t1+t2+t3, and Q1, Q2, t1, t2, and t3 are optimized and controlled to achieve a micro-water flushing sanitary sewage discharge effect in which sanitary waste is discharged in sequence through the sewage receiving chamber, the trap, and gravity sewage discharge management; B. When the air extraction bypass is not connected or the air extraction bypass cannot be connected due to a fault, a flushing water volume sufficient to complete the cleaning and sewage discharge of the sewage receiving chamber by gravity flushing is added to the sewage receiving chamber at time T=0.

[0011] According to another aspect of the present invention, a hygienic sewage discharge device with micro-flushing and air extraction is provided, which comprises an air inlet hood and a vacuum cleaner motor, the air inlet hood completely surrounds the air inlet of the vacuum cleaner motor to form an air inlet chamber, and the air inlet hood is connected to the sewage discharge pipeline by a vent pipe, the sewage discharge pipeline located in front of the air inlet of the vent pipe is connected to the sewage receiving chamber through a water trap, and an air check valve which can completely block the sewage discharge pipeline passage is provided on the sewage discharge pipeline located behind the air inlet of the vent pipe, the air check valve comprises a valve disc fixed on the sewage discharge pipeline and a valve flap connected to the valve disc by a hinge suspension, the valve flap can only be opened backward, and the contact surfaces of the valve flap and the valve disc are configured to fit together under normal conditions and the gravity of the valve flap itself acts completely on the hinge, and the procedure for operating the hygienic sewage discharge device with micro-flushing and air extraction is: the time when the flushing mechanism starts to inject a preset Q1 volume of flushing water into the sewage receiving chamber is T=0, the vacuum cleaner motor starts to run at T=t1, and at T= At time t1+t2, the vacuum cleaner motor is stopped, and at time T=t1+t2+t3, a preset volume of flushing water Q2 is injected into the dirt-bearing chamber.

[0012] As another aspect of the present invention, a micro-flushing and air-drawing sanitary sewage discharge system is also disclosed, which divides domestic sanitary emissions into three categories: toilet waste, domestic drainage and domestic garbage, and performs sanitary discharge and collection, treatment, disposal and utilization operations respectively from the source of emission, wherein toilet waste is discharged according to the micro-flushing and air-drawing sanitary sewage discharge method or using the micro-flushing and air-drawing sanitary sewage discharge device.

[0013] Furthermore, the kitchen waste is separated from the domestic waste, discharged according to the air extraction and micro-flushing sanitary sewage discharge method or using the air extraction and micro-flushing sanitary sewage discharge device with an integrated pulverizer in the sewage chamber, and then collected, processed and utilized together with toilet waste.

[0014] According to the embodiment of the present invention, the air extraction micro-flushing sanitary sewage discharge system is a system that can completely replace the existing life sanitation, sewage and garbage treatment system, but the economic cost and resource and environmental costs are greatly reduced compared with conventional systems.

[0015] The method, device and system for sanitary sewage discharge with micro-flushing provided by the present invention actually contain two major innovations. The first is the innovation of the idea of ​​sanitary sewage discharge. The present invention eliminates the need for water flushing sewage discharge based on long-distance gravity pipeline transportation by limiting the end point of gravity pipeline sewage discharge to a location close to the building, thereby greatly reducing the need to maintain pipeline flow rate. Although the design of short-range sewage discharge is used in both conventional gravity sewage discharge and vacuum sewage discharge, the latter two sanitary sewage discharge methods do not deliberately limit the total length of the horizontal pipeline to a limited range, such as ≤30 meters, resulting in the sanitary sewage discharge methods they established to put forward excessively high technical requirements in some aspects. For conventional gravity sewage discharge, this excessively high technical requirement is reflected in the fact that a higher amount of flushing water must be used to maintain a sufficiently high water flow rate during long-distance pipeline transportation to prevent solid precipitation. In fact, in the field of conventional gravity sewage discharge, there has never been a design that deliberately pursues the use of a small amount of flushing water due to the existence of short-range drainage application scenarios. As for vacuum sewage discharge, this excessively high technical requirement is reflected in placing the entire pipeline transportation process in a negative pressure space that must be strictly sealed, which in turn brings about higher performance and technical requirements for facilities, equipment and their operation such as vacuum pumps. Another major innovation of the present invention is that on the basis of limiting short-range sewage discharge, an air extraction bypass is set on the gravity drainage pipeline, an air check valve is set after the air extraction bypass, and combined with the water trap conventionally set on sanitary ware such as toilets, the synergistic effect of the four is utilized, and through the timing setting of flushing and air extraction operations, a suction force superimposed on the flushing water at the moment of flushing is formed, thereby enhancing the cleaning, sewage discharge and pipeline transportation effects of the flushing water, and achieving the purpose of water flushing sanitary sewage discharge with a small amount of water. Except for the idea of ​​limiting short-range sewage discharge, the other three technical elements mentioned above are very simple in technical implementation, almost all of which are well known to ordinary technicians in this field, and are low in cost. The present invention, by utilizing their synergistic effect, creates an unprecedented low-cost, lightweight and micro-flushing sanitary sewage discharge effect, which cannot be achieved by any single technical element or a combination of two or three technical elements, and is also based on the setting and control method proposed by the present invention. According to the air-pulling micro-flushing sanitary sewage discharge system provided by the present invention, a new system of living sanitary discharge is constructed by utilizing the above-mentioned air-pulling micro-flushing sewage discharge method or device, which completely subverts the application effect that can be achieved based on the existing water-flushing sewage discharge technology and vacuum sewage discharge in terms of economic cost and resource and environmental cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 The air extraction micro-flush toilet system of embodiment 1 of the present invention;

[0018] Figure 2 The air extractor used in the air extraction micro-flush toilet system of embodiment 1 of the present invention;

[0019] Figure 3 An air check valve used in the air extraction and micro-flush toilet system of Example 1 of the present invention;

[0020] Figure 4 This is the process flow of the environmental sanitation system in a farmer's household according to Example 2 of the present invention;

[0021] Figure 5 This is the graphic design of a farmer's environmental sanitation system according to Example 2 of the present invention. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0023] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0024] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0025] When using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc. When using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, or C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.

[0026] It should also be noted that, in the directional terms mentioned in the embodiments, except for the front and rear directions specifically referring to the drainage direction mentioned above, other directional terms such as "upper", "lower", "front", "rear", "left", "right", etc., are only for reference to the directions of the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present invention.

[0027] Embodiment 1: A micro-flushing toilet system, such as Figure 1~Figure 3 shown.

[0028] This embodiment provides a method for hygienic sewage discharge by micro-flushing. Figure 1 , mainly including:

[0029] (1) A sewage chamber 1, a flushing mechanism 2, a water trap 11 and a sewage pipe 3 for receiving sanitary waste such as human waste or kitchen waste are configured in accordance with the technical requirements of conventional flushing sewage and gravity drainage. Each sewage chamber 1 is connected to an independent sewage pipe 3 through the water trap 11. The total length of the pipeline with a hydraulic gradient of ≤1% configured in the sewage pipe 3 is ≤30 meters.

[0030] In this way, it is one of the important features of the present invention to shorten the horizontal distance of sanitary sewage discharge while meeting the health and aesthetic isolation requirements, which can reduce the technical requirements for maintaining the pipeline flow rate. The materials discharged by this method can continue to be further collected, processed or transferred. This practice of separating sanitary sewage discharge from subsequent logistics processes, combined with the application of the micro-flushing technology proposed by the present invention, can greatly reduce the cost of sanitary sewage discharge and wastewater and waste treatment.

[0031] According to an embodiment of the present invention, the connection between the flushing mechanism 2 and the sewage chamber 1 is optionally configured according to the technical requirements of conventional flushing and sewage discharge. When the A control scheme that requires the connection of the air extraction bypass is selected, the total amount of water for one flush is determined according to the pre-set technical indicators of the micro-water flush, which is generally ≤2 liters / time for toilets, for example, it can be 0.2 liters / time, 0.5 liters / time, 0.8 liters / time, 1.0 liters / time, 1.2 liters / time, 1.5 liters / time, 1.8 liters / time, 2.0 liters / time. This flushing water volume is much lower than the water consumption of conventional water flushing and sewage discharge (for example, at least 4 to 8 liters / time).

[0032] According to an embodiment of the present invention, optionally, a sewage outlet is provided at the bottom of the sewage chamber 1 and connected to a water trap 11 for forming a water seal of the sewage chamber. Conventional sewage drainers such as toilets generally have this design, and the water trap 11 and the sewage chamber 1 are usually integrated in the sewage drainer, but a few sewage drainers need to separately provide a water trap 11 below or behind the sewage outlet. A sewage pipe 3 is connected behind the water trap 11.

[0033] According to an embodiment of the present invention, the sewage pipeline refers to a route that allows water from the trap 11 to flow according to the principle of gravity drainage, including interconnected pipes, pipe fittings or other water flow channels. Other pipes connected to the pipeline do not belong to the sewage pipeline if they cannot allow water from the trap to flow according to the principle of gravity drainage. The hydraulic gradient can be, for example, 0, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, etc., and the total length of the pipeline can be, for example, 2 meters, 5 meters, 8 meters, 10 meters, 12 meters, 15 meters, 18 meters, 20 meters, 23 meters, 25 meters, 28 meters, 30 meters, etc.

[0034] In this way, the arrangement of the sewage chamber 1, the trap 11 and the sewage pipe 3 must fully comply with the requirements of conventional gravity drainage, that is, the water injected into the sewage chamber 1 can be discharged continuously and without retention from the end of the sewage pipe 3 in the absence of external force, except for being used to form a water seal.

[0035] (2) An air extraction bypass 4 leading upward is provided on the sewage pipe 3, and an air check valve 5 capable of blocking the sewage discharge passage is provided on the sewage pipe 3 after the air extraction bypass 4, and the air pressure in the sewage pipe 3 after the air check valve 5 is always the same as the atmospheric pressure.

[0036] In this way, by setting the air extraction bypass 4, when the air extraction bypass 4 is connected, the air in the sewage pipeline 3 is extracted, and the limit relative vacuum degree that can be achieved by configuring the air extraction bypass is ≥5%, for example, it can be 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, etc. The setting of the air check valve 5 allows the water from the front pipeline to flow freely through the air check valve 5 to the rear when the air pressure in the front sewage pipeline is the same as the outside atmospheric pressure, but when the air pressure in the front sewage pipeline is lower than the outside atmospheric pressure, the air in the rear pipeline is effectively prevented from freely passing through the check valve 5 to enter the front.

[0037] According to an embodiment of the present invention, a water trap 11 is arranged behind the sewage receiving chamber 1, the total length of the pipeline in the sewage pipeline 3 is controlled to have a hydraulic gradient of ≤1%, an air extraction bypass 4 with a function of extracting air in the sewage pipeline 3 is arranged on the sewage pipeline 3, and an air check valve 5 is arranged behind the air extraction bypass 4. These are key innovations of the present invention. Most of these technical elements are very conventional, but according to the present invention, they are combined together and their synergistic effect is utilized to produce a technical effect never achieved before: when the flushing water is added, the air extraction bypass 4 is connected, and negative pressure is immediately generated in the sewage pipeline after the water trap 11 and before the air check valve 5. At this time, the air check valve 5 prevents the air from the rear from entering the sewage pipeline 3 in the front. Since the front end of the sewage pipeline 3 is connected to the water seal in the sewage chamber 1 of the toilet through the water trap 11, the air cannot enter the sewage pipeline 3 from the front end of the sewage pipeline 3. Only when the negative pressure is sufficient to drive the water in the sewage chamber 1 (including the original water seal and flushing water) to cross the water trap 11 and enter the sewage pipeline and make the air from the sewage chamber 1 to the sewage pipe 3 connected. The negative pressure intensity stops increasing only when the air in the sewage chamber 1 and the air in the sewage pipe 3 are connected. At the moment when the air in the sewage chamber 1 is connected to the air in the sewage pipe 3, due to the huge pressure difference between the inside and the outside (generally ≥5Kpa), a waterspout-like effect is generated at the bottom of the sewage chamber 1, and a strong suction force from the sewage chamber 1 to the sewage pipe 3 is applied to the flushing water and wastewater and waste, thereby strengthening the cleaning and sewage discharge effect of the sewage chamber 1 and causing the wastewater to enter the sewage pipe 3 at a very high initial velocity. At this time, if the air extraction bypass 4 is cut off in time, the negative pressure in the sewage pipe 3 in front of the air check valve 5 disappears quickly, and the wastewater can freely pass through the air check valve 5 under the combined action of its own gravity and initial velocity and flow out from the end of the sewage pipe 3 at a speed sufficient to prevent the precipitation of solids. Only by combining and applying the technical elements of the above four aspects according to the method of the present invention can the above synergistic effect be produced. Without any one of them, it is impossible to produce the effect of micro-flushing sewage discharge.

[0038] Optionally, the air extraction bypass 4 mentioned in the present method can be connected to a negative pressure space storing vacuum energy, or can be connected to a power device with an air extraction function.

[0039] According to an embodiment of the present invention, the limit relative vacuum refers to the lowest relative vacuum detected in the enclosed space when the air extraction bypass 4 and an enclosed space are continuously connected. Theoretically, the air extraction bypass 4 can be any device or facility with air extraction capability. This method only stipulates the lower limit of the limit vacuum that the device or facility can achieve, and does not stipulate its upper limit. In fact, although devices or facilities with higher limit vacuum such as self-priming pumps, vacuum pumps or facilities that pre-store vacuum energy can be selected according to this method, the limit vacuum that can be achieved by conventional self-priming pumps, vacuum pumps or vacuum tanks is much higher than the lower limit of 5%. Its redundant vacuuming capacity will inevitably put forward higher technical requirements for the system and equipment, which is not conducive to reducing costs. The present invention does not recommend it, and generally speaking, conventional technicians in this field will not deliberately choose it.

[0040] Optionally, the air extraction bypass 4 of the present invention may include, for example, a vacuum cleaner motor 44 and an air inlet hood 41, wherein the air inlet hood 41 completely surrounds the air inlet of the vacuum cleaner motor 44 to form an air inlet chamber, and the air inlet hood 41 is suitable for being connected to the sewage pipeline 3 through the vent pipe 42, so that the air in the sewage pipeline 3 located before the air check valve 5 is extracted through the operation of the vacuum cleaner motor 44. Further optionally, the air extraction bypass 4 may also include a vent pipe 42, a connecting pipe 43 and an exhaust hood 45, wherein the middle part of the connecting pipe 43 is connected to the vent pipe 42, the connecting pipe 43 is used to access the sewage pipeline and become a part of the sewage pipeline 3, and the exhaust hood 45 is arranged above the vacuum cleaner motor 44 to serve as a protective cover to protect and provide an exhaust channel.

[0041] According to the embodiment of the present invention, the air pressure in the sewage pipeline 3 after the air check valve 5 is always consistent with the external atmospheric pressure. The reason for such setting is that the method requires a water seal to be set before the air extraction bypass 4, but it is not allowed to have a water seal after the air extraction bypass 4, so as to avoid solid precipitation in the sewage pipeline as much as possible, and when there is a little air leakage in the air check valve 5, the sewage at the rear will not be sucked back to the front when the air extraction bypass 4 is connected.

[0042] (3) When it is necessary to discharge the sewage from the sewage chamber 1, select one of the following schemes A or B: A, configure the flushing mechanism 2 to inject a flushing water volume Q1 into the sewage chamber 1 at T=0, connect the exhaust bypass 4 at T=t1, close the exhaust bypass 4 at T=t1+t2, and configure the flushing mechanism 2 to inject a flushing water volume Q2 into the sewage chamber 1 at T=t1+t2+t3; B, configure the flushing mechanism 2 to inject a flushing water volume Q3 into the sewage chamber 1 at T=0, when the exhaust bypass is not connected or the exhaust bypass cannot be connected due to a malfunction, to complete the cleaning and sewage discharge of the sewage chamber by gravity flushing.

[0043] According to an embodiment of the present invention, in the operation method and timing of the above-mentioned scheme A, Q1 is the amount of flushing water mainly used to clean the surface of the sewage chamber 1, and Q2 is the amount of flushing water mainly used to form a water seal. The sum of the two is the preset total amount of flushing water per time, which is preset by the user or manufacturer based on comprehensive sanitary performance and water-saving requirements, etc., and is usually ≤2 liters / time. t1 is mainly determined by the flow rate of water injection of the flushing mechanism, usually ≤5 seconds, for example, it can be 0 seconds, 0.5 seconds, 1 second, 2 seconds, 3 seconds, 4 seconds or 5 seconds. The greater the response speed and flow rate of the flushing operation, the shorter the duration of t1. t2 is the duration of continuous connection of the air extraction bypass, usually around 0.5 seconds. t3 is the delay after the air extraction bypass is cut off, the purpose of which is to prevent the water used to form the water seal from being unnecessarily sucked into the sewage pipe, usually ≤5 seconds, for example, it can be 0.5 seconds, 1 second, 2 seconds, 3 seconds, 4 seconds or 5 seconds. The above-mentioned Plan B is an alternative plan, which is actually a conventional gravity-type water flushing sewage discharge method. It is mainly used for temporary sewage discharge when the wind bypass fails to be connected or there is a power outage, so as to avoid daily life being affected by technical failures.

[0044] The invention effect of the present method is that it not only achieves the effect of micro-water flushing and drainage, but also overcomes the defects of vacuum drainage. Generally speaking, through the method of the present invention, the amount of flushing water required is only 1 / 4 to 1 / 3 of the water used for conventional gravity water flushing and drainage. In the method of the present invention, the suction force is achieved by the air extraction operation synchronized with the cleaning and drainage process of the sewage chamber 1. The process is very short, the requirements for the suction capacity of the air extraction bypass 4 are not high, and there is no need to store vacuum energy. The invention effects obtained are: first, the setting and use costs of the sewage pipeline are almost the same as those of ordinary gravity drainage pipelines, that is, far lower than the setting and use costs of vacuum pipelines; second, the performance requirements for the air extraction mechanism are far lower than vacuum drainage. Compared with vacuum drainage, the method of the present invention also has a unique advantage, that is, it can be used for sewage drainage even when the air extraction bypass cannot work normally, which greatly expands the fault tolerance of the sewage drainage system. Vacuum drainage cannot be used for sewage drainage once the vacuum fails.

[0045] Furthermore, at least two sewage receiving chambers 1 share a sewage discharge pipeline at the end behind the air check valve 5 , but the sewage discharge pipeline including the air check valve 5 and before the air check valve 5 must be arranged in a one-to-one correspondence with the sewage receiving chambers 1 .

[0046] Furthermore, a collection container 6 for collecting the effluent is arranged below the end of the sewage pipe 3. It is strictly forbidden for the liquid level in the collection container 6 to be higher than the lower edge of the end of the sewage pipe 3, and the air pressure from the liquid level of the collection container 6 to the end of the sewage pipe 3 is required to always be consistent with the external atmospheric pressure.

[0047] Furthermore, a sewage treatment operation is integrated in the collection container 6 to synchronously store and treat the effluent from the sewage pipe 3, and the sewage treatment operation includes but is not limited to sewage treatment operations such as gravity solid-liquid separation and / or biochemical reaction.

[0048] Furthermore, the clarified effluent after the sewage treatment operation in the collection container 6 is transferred through a gravity pipe.

[0049] Further, configure Q2=0 or t1=0. In most cases, the response speed of the flushing operation is relatively fast while the flow rate of the flushing water is not very fast, so the air extraction bypass 4 can be connected synchronously with the flushing operation, and when t2 is relatively small, such as about 0.5 seconds, there is still residual water that continues to flow into the sewage chamber 1 after the air extraction bypass 4 stops being connected. This part of water tends to stay at the bottom of the sewage chamber, that is, naturally form a water seal, so doing so can simplify control and operation, but will not affect the micro-flushing sewage discharge effect.

[0050] Furthermore, t2 is configured so that at time T=t1+t2, the drainage from the sewage chamber 1 just completely enters the sewage pipe 3. This can further shorten the connection time of the air extraction bypass 4 and save energy, and ensure that the sewage from the sewage chamber 1 is not mistakenly sucked into the air extraction bypass.

[0051] Furthermore, all or part of the parameters of Q1, Q2, t1, t2, and t3 are adjusted and controlled by an electronic circuit with a preset control program.

[0052] Furthermore, the height difference between the lowest point and the highest point of the inner cavity of the water trap 11 is set to be ≥5cm but ≤15cm, for example, the height difference can be 5cm, 8cm, 10cm, 12cm, 15cm, etc. The present invention does not recommend the use of a water trap with a height difference that is too small or too large, which can ensure the cleaning effect of the sewage drainer without putting forward unnecessary technical requirements on the air extractor. Generally speaking, the height difference of the water trap of the existing gravity flush toilet is also within the above range.

[0053] Furthermore, the diameter of the sewage discharge port of the sewage chamber 1 is configured to be 40-60 mm. A too thick sewage discharge port is not conducive to improving the suction force, and a too small sewage discharge port will increase the resistance of sewage discharge.

[0054] Furthermore, an extended-range water trap is provided on the sewage pipe 3 before the air extraction bypass 4 to increase the distance that the sewage pipe 3 can transport in the horizontal direction. The extended-range water trap is a downward P-shaped bend connected to the sewage pipe, and a water seal that fills the pipe diameter is formed in the P-shaped bend. The total length of the pipeline with a hydraulic gradient of ≤1% on the sewage pipe between the extended-range water traps or between the extended-range water traps and the water trap 11 connected to the sewage chamber 1 is ≤30 meters. The setting of the extended-range water trap should increase the suction capacity of the air extraction bypass 4 accordingly. The extended-range water trap allows the container for collecting wastewater to be set farther away, but this is relatively rare.

[0055] Another aspect of embodiment 1 also discloses a hygienic sewage discharge device with micro-flushing and air extraction, such as Figures 1 to 3 As shown, the device mainly includes a dirt-bearing chamber 1, a flushing mechanism 2, an air extraction bypass 4, an air check valve 5, a collecting container 6 and a control mechanism 7. The air extraction bypass 4 includes an air inlet cover 41 and a vacuum cleaner motor 44. The air inlet cover 41 completely surrounds the air inlet of the vacuum cleaner motor 44 to form an air inlet chamber, and the air inlet cover 41 is connected to the sewage pipeline 3 by a vent pipe 42. When the vacuum cleaner motor 44 is running, the air in the sewage pipeline 3 is extracted. The sewage pipe located in front of the vent pipe 42 The pipeline 3 is connected to the sewage chamber 1 through a trap 11, and an air check valve 5 that can completely block the sewage pipeline 3 is provided on the sewage pipeline 3 located behind the vent pipe 42. The air check valve 5 includes a valve disc 51 fixed on the sewage pipeline 3 and a valve flap 53 suspended and connected to the valve disc 51 through a hinge 52. The valve flap 53 can only be opened to the rear, and the contact surfaces of the valve flap 53 and the valve disc 51 are fitted together under normal conditions and the gravity of the valve flap 53 itself acts completely on the hinge 52. The procedure for operating the air extraction micro-flushing sanitary sewage discharge device is: the flushing mechanism 2 is set to inject a preset Q1 volume of flushing water into the sewage chamber 1 at T=0, the vacuum cleaner motor starts to run at T=t1, and the vacuum cleaner motor stops running at T=t1+t2, and the preset Q2 volume of flushing water is injected into the sewage chamber at T=t1+t2+t3.

[0056] According to an embodiment of the present invention, further, the sewage receiving chamber 1 is connected to the flushing mechanism 2, and the sewage receiving chamber 1 is connected to the water trap 11, the air extraction bypass 4, the air check valve 5, and the collecting container 6 in sequence through the sewage discharge passage or pipeline. The connecting pipeline from the water trap 11 to the collecting container 6 constitutes the sewage discharge pipeline 3. The liquid level in the collecting container 6 must be lower than the lower edge of the end of the sewage discharge pipeline 3, and the pressure in the space above the liquid level to the upper edge of the end of the sewage discharge pipeline must always be kept the same as the external atmospheric pressure.

[0057] According to an embodiment of the present invention, the above-mentioned air extraction and micro-flushing sewage removal device is the power source for realizing the above-mentioned method. The vacuum cleaner motor can be a product that complies with the Chinese national standard "GB / T 25441-2022 Vacuum cleaner motor" or a product with similar functions. The vacuum cleaner motor is also called a series-excited motor, which can provide a low-negative pressure suction function and has a lower manufacturing cost than a general vacuum pump.

[0058] Furthermore, the air extraction micro-flushing sewage discharge device includes a connecting pipe 43 for connecting the air extraction bypass 4 to the sewage discharge pipeline 3. The connecting pipe 43 connected to the sewage discharge pipeline 3 becomes a part of the sewage discharge pipeline 3 and meets the requirements of gravity drainage.

[0059] Furthermore, an air check valve 5 is provided at one end of the connecting pipe 43 away from the dirt receiving chamber 1 .

[0060] Furthermore, the air check valve 5 and the collection container 6 for receiving the discharge from the sewage pipeline 3 are integrated into a whole.

[0061] Furthermore, the air inlet cover 41, the vacuum cleaner motor 44, the air check valve 5, and the collection container 6 are integrated into a whole.

[0062] Further, the sewage chamber 1, the trap 11 and the flushing mechanism 2 are integrated into one whole, or the sewage chamber 1 and the trap 11 are integrated into one whole, or the sewage chamber 1 and the flushing mechanism 2 are integrated into one whole.

[0063] Furthermore, the dirt-receiving chamber 1, the water trap 11, the flushing mechanism 2, the air inlet hood 41, the vacuum cleaner motor 44, the air check valve 5, and the collection container 6 are integrated into a whole, and the necessary pipes for drainage and exhaust and the circuits for power supply and electrical signal transmission are pre-configured according to the specific situation of the user or configured during installation.

[0064] Furthermore, the vacuum cleaner motor 44 and the flushing mechanism 2 are controlled by the control mechanism 7, and the control mechanism 7 is integrated with one selected from the flushing mechanism 2, the dirt-receiving chamber 1 or the air extraction bypass 4 into a whole.

[0065] Furthermore, a crusher is integrated into the dirt-bearing chamber 1. This design can be used to discharge and collect kitchen waste.

[0066] The air extraction and micro-flushing sanitary sewage discharge device of the present invention can not only fully realize the aforementioned air extraction and micro-flushing sanitary sewage discharge method, but also provide a preferred air extraction bypass and air check valve solution.

[0067] Example 2 The environmental sanitation system in a farmer's household, such as Figure 4 and Figure 5 , the toilet system used is shown in Figure 1~Figure 3

[0068] This embodiment provides a system for the drainage of sewage by micro-flushing and air extraction for a single rural residence, which is divided into a toilet waste treatment unit, a domestic wastewater treatment unit and a domestic garbage treatment unit from the source of discharge, wherein domestic garbage refers to waste other than toilet waste and domestic wastewater, and is treated by transferring waste from indoor trash cans to community trash bins, and then further treatment is undertaken by the public sanitation department. The toilet waste treatment unit and the domestic wastewater treatment unit are all set up indoors, and the toilet waste is transferred to a three-chamber septic tank outdoors through a micro-flushing and air extraction sewage discharge device. The sludge in the third compartment of the three-chamber septic tank is cleaned by the residents themselves and used for fertilizing the vegetable gardens near the residence. The cleaning of the sludge in the first compartment of the three-chamber septic tank is the responsibility of the public sanitation department, and the cleaning frequency is once every three years, and it is used for fertilizing farmland after further qualified treatment. The system flow is as follows: Figure 4 shown.

[0069] The toilet waste management system in this embodiment is composed of a set of air extraction micro-flush toilets and a three-chamber septic tank. Figure 5 As shown. The air extraction micro-flush toilet includes a toilet with a sewage chamber 1, a water tank 21, a sewage pipe 3, an air extraction bypass 4 provided with a vacuum cleaner motor 44, and an air check valve 5. The toilet is installed indoors, is a wall-mounted type, and has a water trap 11. The net height of the water trap 11 is 8cm, and the inner diameter of the toilet sewage outlet and the water trap is 50mm. The water tank 21 is installed above the toilet 1, with a flush button 22 and a control mechanism 7, and its water outlet is connected to the water inlet of the toilet. Press the flush button 22 once to add a total of 1.5 liters of water into the toilet and trigger the control mechanism 7 once. In this case, only one water injection is implemented during flushing, that is, Q1=1.5 liters, Q2=0, and t3 does not need to be set. The control mechanism 7 includes a time relay circuit and is connected to the circuit of the exhaust bypass 4. The control procedure is: when the control mechanism 7 is triggered, the circuit of the exhaust bypass 4 is immediately connected, that is, t1=0, and t2=0.4 seconds, that is, when T=t1+t2=0.4 seconds, the circuit of the exhaust bypass 4 is disconnected. The toilet is connected to the sewage pipe 3, with a total length of 10 meters and a hydraulic slope of 2%. The exhaust bypass 4 is as follows: Figure 2 As shown, it includes a connecting pipe 43, a vent pipe 42, an air inlet hood 41, a vacuum cleaner motor 44, and an exhaust hood 45. The power of the vacuum cleaner motor 44 is 1500W and the rotation speed is 30,000 rpm. The diameter of the connecting pipe 43 is DN110, which is used to connect the air extraction bypass 4 to the sewage pipeline 3 and become a part of the sewage pipeline. The middle part of the connecting pipe 43 is connected to the vent pipe 42. The length of the sewage pipeline 3 located behind the vent pipe 42 is 30 cm. The end of the sewage pipeline 3 extends into the inlet of the three-compartment septic tank serving as the collecting container 6. An air check valve 5 with a diameter of DN110 is set at the end of the sewage pipeline 3. The air check valve 5 is as shown in FIG. Figure 3As shown, it includes a valve sleeve 51, a hinge 52 and a valve flap 53. The three-compartment septic tank is configured so that its highest liquid level is 3 cm below the air check valve 5.

[0070] The method of use and sewage discharge process of the air-drawing micro-flush toilet of this embodiment are as follows: after defecation, press the flushing tank button 6 to trigger the control mechanism 7 and add a total of 1.5 liters of flushing water to the toilet, including water for washing the toilet wall and water for forming the toilet water seal. The control mechanism 7 immediately connects the air-drawing bypass 4, and instantly generates an instantaneous negative pressure of about 10kPa in the sewage pipeline. The negative pressure makes the valve flap 53 of the air check valve 5 and the valve sleeve 51 more tightly combined, preventing the air in the sewage pipeline 3 behind the air check valve 5 from entering the sewage pipeline 3 in front of the air check valve 5, and sucking the waste in the toilet into the sewage pipeline 3 together with the flushing water. Once all the wastewater enters the sewage pipeline 3, the air pressure in the sewage pipeline 3 immediately tends to be the same as the external atmospheric pressure. The wastewater enters the sewage pipeline 3 at an initial velocity of about 10 meters per second, and is finally discharged into the three-compartment septic tank as the collection container 6.

[0071] In this embodiment, the air-drawing micro-flushing sanitary sewage discharge method and air-drawing micro-flushing sanitary sewage discharge device disclosed in the present invention are applied to construct an air-drawing micro-flushing sanitary sewage discharge system for farmer's toilets and domestic sewage treatment, which meets the requirements of household hygiene and sewage treatment, and has the following effects: (1) Compared with conventional water-flushing toilets and sewage treatment systems, the water consumption of toilets is reduced from 6 liters / time to 1.5 liters / time, while the investment of the entire system is reduced by 60%, the operating cost is reduced by 90%, and the system can recycle organic fertilizer equivalent to about 5 kg / person / year of chemical fertilizer; (2) Compared with vacuum toilets and subsequent treatment systems, the system investment is reduced by 50%, the operating cost is reduced by 40%, and the technical requirements for system maintenance are greatly reduced.

[0072] Example 3

[0073] The flushing mechanism 2 is a pipeline directly connected to the water pipe controlled by a solenoid valve, and the operation is similar to that of Example 1, except that the control mechanism is set to t1 = 0 seconds, t2 = 0.5 seconds, and t3 = 2 seconds, and at T = 0 seconds, the solenoid valve of the flushing mechanism is controlled by the control mechanism 7 to open and pass 0.8 liters of flushing water, and then at T = 2.5 seconds, the solenoid valve of the flushing mechanism 2 is controlled to open and inject 0.3 liters of flushing water. The experimental comparison found that under the same micro-flushing sanitation and sewage discharge effect, Example 3 can use less flushing water than Example 1.

[0074] Example 4

[0075] The operation is similar to that of Example 1, except that the vacuum cleaner motor is replaced with a self-priming pump with a rated suction range of 6 meters. The test found that a self-priming pump with a power of 3 kilowatts is required to achieve a micro-flushing sewage discharge effect similar to that of Example 1, and the cost of the air extraction bypass 4 increases by 100%.

[0076] The embodiments of the present invention are described above. However, these embodiments are only for the purpose of illustration, and are not intended to limit the scope of the present invention. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be used in combination. The scope of the present invention is defined by the attached claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A method for hygienic sewage discharge by air extraction and micro flushing, characterized by: Each sewage chamber for receiving sanitary waste is connected to a single sewage pipe that complies with the principle of gravity drainage through a water trap. The total length of the pipeline with a hydraulic slope of ≤1% in the sewage pipe is ≤30 meters. An air extraction bypass is set on the sewage pipe, and an air check valve that can only be opened to the rear is set on the sewage pipe after the air extraction bypass. The air pressure in the sewage pipe after the air check valve is always the same as the atmospheric pressure. Select one of the following two control schemes for sewage discharge: A. When the air extraction bypass can be connected, a preset volume Q1 is injected into the sewage chamber at time T=0. of flushing water, start connecting the air extraction bypass at T=t1, close the air extraction bypass at T=t1+t2, and inject a preset Q2 volume of flushing water into the sewage chamber at T=t1+t2+t3, and optimize and control Q1, Q2, t1, t2, and t3 to achieve the preset micro-water flushing sanitary sewage discharge effect in which sanitary waste is discharged through the sewage chamber, the water trap, and the sewage pipe in sequence; B, when the air extraction bypass is not connected or the air extraction bypass cannot be connected due to a fault, add a flushing water volume sufficient to complete the cleaning and sewage discharge of the sewage chamber by gravity flushing to the sewage chamber at T=0.

2. The method for hygienic sewage removal by air extraction and micro-flushing as claimed in claim 1, characterized in that: Each of the multiple sewage-receiving chambers corresponds to an independent water trap, an air check valve, and a section of sewage pipe before the air check valve, and from any point after each air check valve to the end of the sewage pipe, at least two of the multiple sewage-receiving chambers share a section of sewage pipe.

3. The method for hygienic sewage removal by micro-flushing according to claim 1, characterized in that: A collection container for collecting the discharged material is arranged below the end of the sewage discharge pipeline; Preferably, a sewage treatment operation is integrated in the collection container, the sewage treatment operation comprising gravity solid-liquid separation and / or biochemical reaction; Preferably, clarified effluent from the sewage treatment operation in the collection container is transferred via a gravity pipe.

4. The method for hygienic sewage removal by air extraction and micro flushing as claimed in claim 1, characterized in that: Configure Q2=0 or t1=0; and / or t2 is configured so that at time T=t1+t2, the drainage from the sewage chamber just completely enters the sewage pipeline; and / or The height difference between the lowest point and the highest point of the inner cavity of the trap is set to be ≥5cm but ≤15cm; and / or Adjust and control all or part of the parameters Q1, Q2, t1, t2, t3 through an electronic circuit with a preset control program; and / or The diameter of the sewage outlet of the sewage chamber is configured to be 40-60 mm; and / or An extended-range water trap is provided on the sewage pipe before the air extraction bypass.

5. A hygienic sewage discharge device with air extraction and micro-flushing, characterized by: The invention comprises an air inlet hood and a vacuum cleaner motor, wherein the air inlet hood completely surrounds the air inlet of the vacuum cleaner motor to form an air inlet chamber, and the air inlet hood is connected to the sewage pipeline by a vent pipe, the sewage pipeline located in front of the air inlet of the vent pipe is connected to the sewage chamber through a water trap, and an air check valve which can completely block the sewage passage is provided on the sewage pipeline located behind the air inlet of the vent pipe, the air check valve comprises a valve disc fixed on the sewage pipeline and a valve flap connected to the valve disc by hinge suspension, and the valve flap can only be opened backward, and the contact surfaces of the valve flap and the valve disc are configured to fit together under normal conditions and the gravity of the valve flap itself completely acts on the hinge, and the procedure for operating the air extraction micro-flushing sanitary sewage discharge device is: the time when the flushing mechanism starts to inject a preset Q1 volume of flushing water into the sewage chamber is T=0, the vacuum cleaner motor starts to run at time T=t1, and at T= At time t1+t2, the vacuum cleaner motor is stopped, and at time T=t1+t2+t3, a preset volume of flushing water Q2 is injected into the dirt-bearing chamber.

6. The air extraction and micro-flushing sanitary sewage discharge device according to claim 5 is characterized in that: It includes a connecting pipe for connecting to a sewage pipeline and becoming a part of the sewage pipeline, and the middle part of the connecting pipe is connected to the ventilation pipe; Preferably, the air check valve is provided at one end of the connecting pipe away from the dirt-bearing chamber.

7. The air extraction and micro-flushing sanitary sewage discharge device according to claim 5 is characterized in that: The air check valve and the collection container for receiving the material discharged from the sewage pipeline are integrated into one body; or The air inlet hood, the dust collector motor, the air check valve and the collection container for receiving the materials discharged from the sewage pipeline are integrated into a whole.

8. The air extraction and micro-flushing sanitary sewage discharge device according to claim 5 is characterized in that: The dirt-carrying chamber is integrated with at least one of a water trap and a flushing mechanism into a whole; or The sewage chamber, the water trap, the flushing mechanism, the air inlet cover, the vacuum cleaner motor, the air check valve, and the collection container for receiving the sewage pipeline are integrated into a whole, and are pre-configured or configured during installation for integrated drainage or exhaust pipelines and circuits for power supply and signal transmission; or The vacuum cleaner motor and the flushing mechanism are controlled by a control mechanism, and the control mechanism is integrated with one selected from the flushing mechanism, the dirt-bearing chamber or the air-drawing micro-flushing sanitary sewage discharge device into a whole; or The dirt-bearing chamber is integrated with a pulverizer.

9. A hygienic sewage discharge system with air extraction and micro flushing, characterized by: The sanitary discharge of life is divided into three categories: toilet waste, domestic drainage and domestic garbage, and the sanitary discharge and collection, treatment, disposal and utilization operations are carried out respectively from the source of discharge, among which the toilet waste is discharged according to the sanitary sewage discharge method of the air-drawing micro-flush as described in claim 1 or using the sanitary sewage discharge device of the air-drawing micro-flush as described in claim 5.

10. The air extraction and micro-flushing sanitary sewage discharge system according to claim 9, characterized in that: The kitchen waste is separated from the domestic waste, discharged according to the air-drawing micro-flush sanitary sewage discharge method as claimed in claim 1 or using the air-drawing micro-flush sanitary sewage discharge device as claimed in claim 5, and then collected, processed and utilized together with toilet waste.

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