WO2021163817A1

WO2021163817A1 - Manhole cover for preventing gas and creature from escaping

Info

Publication number: WO2021163817A1
Application number: PCT/CN2020/000032
Authority: WO
Inventors: 张文
Original assignee: 张文
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2021-08-26

Abstract

A manhole cover for preventing gas and creature from escaping, which can ensure quick water drainage, and can prevent gas and creature from escaping, and is an innovation for introducing a deodorization floor drain in a toilet into a manhole cover structure. It is proposed to add an anti-escaping control structure on the manhole cover so as to automatically control the opening and closing of a water drainage channel. The manhole cover may consist of an upper cover plate with a grate and a push column, an upper edge with a spring, and a lower funnel, the upper edge being fixed on the upper cover plate, the lower funnel being connected to the spring of the upper edge by means of pull ropes, and the push column can be pushed into a water drainage hole of the lower funnel; the manhole cover may also consist of an upper cover plate with a grate, a long funnel provided with water overflow windows and mounted to the upper cover plate, and a ring-shaped valve provided with a float and provided in the long funnel, the top tip of the float can be pushed into a water drainage hole of the long funnel; and the manhole cover may also consist of an upper cover plate with a grate, a single funnel connected to the upper cover plate, and a single float valve which is provided in the single funnel and can be pushed into a hole of the single funnel. In addition, the solutions for blocking manhole cover openings of sewage drainage pipes, providing air sterilization devices for gas discharge ports at designated locations in a region, and providing blowers for air supply at designated manhole cover openings are further proposed for a water drainage system for rain and sewage separation. The present invention has a simple structure, is easy to manufacture, is economical and applicable, can be widely used in urban water and sewage drainage pipe networks, and can also be made to be a floor drains in toilets.

Description

Manhole cover for preventing gas and biological overflow

Technical field; sanitary ware, public facilities.

Background technique:

On January 22, 2019, the sink drain pipe in my bathroom was blocked, so I checked and repaired the drain pipe and floor drain. After searching, the current better four-proof floor drain has anti-overflow functions such as anti-blocking, anti-odor, anti-mass flow, anti-overtime drying. The method adopted to realize these four prevention functions is mainly the principle of water seal. Of course, water seals are currently recognized as the most scientific anti-overflow protection method in fluid circuits that require pipeline isolation such as toilets.

In order to prevent overtime drying out, the latest four-proof floor drain requires a water seal of 50mm or more, otherwise, it will be investigated whether this so-called odor-resistant floor drain has really done this function and is really deodorant. 50mm, this is not difficult to do. We can easily fold a 50mm backwater bend water seal with the hose downpipe we use. The anti-odor floor drain seals on the market up to 50mm are also easy to buy, and 110mm ones are available. . However, there is a question, that is, how long can this 50mm control? There is a big gap in the amount of evaporation in various environments. For example, in the north for heating in winter, there is a heating pipe next to the floor drain, and the bathroom is very dry. If some people stay home for ten and a half months, or if the rich have many bathrooms, they may not use a certain bathroom every day, the water seal of the floor drain may dry up long ago, and the luxurious bathroom may also be smelly. Some hotels are also distinguished between off-season and high-season. The off-season does not clean for a long time, and it is prone to the problem of floor leakage and water sealing. In public toilets and some industrial and mining enterprises, there are also some floor drains that are preventive. It is difficult for effective runoff to flow into the floor drain at ordinary times. The water-sealed floor drain loses its deodorizing function here. Therefore, it is necessary to design a four-proof floor drain based on the principle of non-water sealing. Therefore, recently some serious thinking people have introduced non-water-sealed toilets with four-proof floor drains, and some also call their own innovations as six-proof floor drains. The methods they use are also open and close, mainly using modern technology, such as the opening and closing of the pipeline obtained by magnetic poles repelling magnetic levitation, the opening and closing of the pipeline obtained by the mutual attraction of magnetic poles, and the opening and closing obtained by the deformation of polymer molding. These technological advancements have improved the environment in people's bathrooms. Of course, perhaps after a period of practical testing, water seals are still the most applicable and scientific in places that are not too dry.

By extension, for the sake of its own sanitation and beauty, the city is full of floor drains-sewer manholes. Some manholes are connected to septic tanks and smelly all year round. Some people cover them with rubber or cardboard. The components flowing in the urban sewer are far more complicated than those in the sewer in the family bathroom, because there are collections of sewers in families, factories and mines, enterprises, hospitals, and schools! There are all kinds of germs, volatile organic compounds, and parasites in the sewer next to us. Just because it is covered by a big eye-catching iron cover, we won't be as sorrowful as if we hate the smelly river in the city. In fact, the odor and all kinds of harmful gases, bacteria, and parasites escaping from the eyes of many big iron covers are really no worse than a big smelly river. In many cities full of flowers, beside the many flowers that exude a variety of floral fragrances, there are manhole covers, and the odor and various smells are emitted from the eyes of the manhole covers at the same time. In summer, I have walked on the manhole cover by the side of the road many times, and I am often disgusted by the smell rushing out of it. Today is the twenty-sixth lunar month of the Year of the Dog. In the morning, I heard someone set off firecrackers. I remembered the previous report that a child ignited the firecracker and threw it into the sewer manhole during the Chinese New Year. It caused a biogas explosion and was injured. In order to quickly drain the large amount of rainwater in summer, our city has designed many manholes. In order to prevent various parasites such as mosquitoes in the sewer from flying out of the manhole cover, the health department in Tianjin requires spraying medicine into the manhole cover every few days. However, there is no alternative to other harmful substances-various gases ejected from the manhole cover. Therefore, it is actually very necessary to design a manhole cover that can drain water quickly and prevent back overflow of things in the sewer.

Obviously, it is unrealistic to use the current water-sealed four-proof floor leakage principle to make a water-sealed four-proof manhole cover because it requires regular runoff to replenish them. The above-mentioned innovations in the bathroom floor leakage prevention, such as the magnetic method, the deformation of the polymer material molded pipe, etc., are also not suitable for improving the drainage of urban rainwater. In order to solve the problem of toxic or unpleasant gases and harmful organisms spilling out of the manhole cover in the official website of the city sewer, in the last few days of the twelfth lunar month of the dog, I thought and thought, thought and thought, and came up with some anti-gas And the improved structure of the manhole cover for biological anti-overflow. Of course, for cities and villages with manhole covers everywhere, this article only discusses sewage wells, drainage wells, septic tank manhole covers, and communication wells, water supply wells, gas supply wells, etc., if they are all closed manhole covers, they will not be discussed. Of the list.

On the 29th of the twelfth lunar month of the Year of the Dog, on the shift day, I wrote my own superficial thoughts about this and submitted it to the Tianjin Office of the Tianjin Intellectual Property Office in the form of a patent application. February 14, 2019, Valentine's Day in European and American countries , On the tenth day of the first lunar month of the Chinese Year of the Pig, I submitted an improved version of the text. In the Year of the Pig, I tried to implement this technical plan and tried several times. Due to funding and other reasons, the implementation of this technical plan involving liquid waste treatment was still unsuccessful. Unsuccessful implementation has been a common occurrence in the past ten years. Among them, there are many of my personal technical solutions to reduce exhaust gas. Despite repeated blows, I still submitted a personal, silent technical solution to solid waste pollution to the Tianjin agency at noon on December 26, 2019. However, at the end of the twelfth lunar month of the Year of the Pig, in the words of the famous biologist Shi Yigong, President of the Year of the Rat, the new type of coronavirus pneumonia occurred once in decades. On February 8, China named the new crown pneumonia NCP (Novel coronavirus pneumonia). Probably because the three-letter abbreviation of NCP is prone to misunderstanding, on February 11, the World Health Organization named it COVID19. China faces challenges! As of 24:00 on February 12, 2020, Hubei Province, the epicenter of the epidemic, has reported a total of 48,206 cases of new coronary pneumonia, and many infected people have been reported in many countries around the world. At the State Council’s joint prevention and control press conference on February 9, experts mentioned the problem of the virus’s fecal-oral transmission. After watching the live broadcast, I called the Tianjin Citizens Hotline 02288908890 and asked the receptionist to convey my suggestions on the issues raised in this article. As mentioned above, the present invention was originally used to prevent the gas and organisms in the sewage pipe from overflowing from the manhole cover. Now, if the new coronavirus is discharged from the sewage pipe in the hospital, the washing place of the infected person, etc. Volatile gases are emitted from the cover of another manhole, especially if it may be infected or directly carried by other animals in the sewer. This kind of transmission may also be very serious. Now it is promoted everywhere to wear masks, wash hands frequently, and gather less to avoid infection. Wuhan, the epicenter of the epidemic, uses spray cannons to kill on the street, but the waste water from washing our hands, urination and defecation, there is the virus. Killed it?

Summary of the invention: The present invention proposes some improved structures for manhole covers that can not only ensure rapid drainage but also prevent gas and biological back overflow. It is characterized by the addition of an anti-overflow top pillar structure to control the opening and closing of the funnel drainage channel, and it is automatically realized based on the interaction between the gravity principle of the flow difference and the elastic force and buoyancy. It is composed of an upper cover plate with a grate and a top column, an upper edge and a lower funnel with a spring. The upper edge is fixed on the upper cover plate. Push into the drain hole of the lower funnel; it can also be composed of an upper cover with a grate and a long funnel with an overflow window and a built-in ring valve with a float. The top of the float can be pushed into the drain hole of the long funnel; It can be composed of an upper cover plate with a grate connected to a single funnel, and a built-in single float valve. The float tip of the single float valve can be pushed into the drain hole under the single funnel; it can also be composed of an upper cover plate with elastic steel sheets and a device. A hinged upper edge is connected with a disc-shaped valve. At the same time, the drainage system of rain and sewage separation is proposed to block the drainage pipe manhole cover hole, the regional set point exhaust port plus the air anti-virus device and the fixed point well bore plus blower air supply structure. The invention is simple in structure, convenient to manufacture, economical and applicable, and can be widely used for manhole covers of urban pipe network manholes, and can also be made into floor drains of toilets.

Brief Description of the Drawings: Fig. 1 is a schematic diagram of the spring return type structure of the present invention, Fig. 2 is a schematic diagram of the buoyancy reset type structure of the present invention, and Fig. 3 is a structure diagram of a ring valve with a conical float installed in Fig. 2. Fig. 4 is a schematic structural diagram of a buoyancy reset type with only a single float valve according to the present invention, and Fig. 5 is a comparative structural schematic diagram of an elastic reset structure of the present invention.

Parts in the picture:

In Figure 1, 1 indicates the upper cover, 1-1 indicates the area where the upper cover can pass through the water, 1-2 indicates the water passing hole of the upper cover, 1-3 indicates the screw for installing the top post, and 1-4 indicates the top Column, 2 represents the optional rubber seal, 3 represents the sewer, 4 represents the upper edge with spring, 4-1 represents the spring, 4-2 represents the upper edge mounting platform, 5 represents the lower funnel, 5-1 represents The drawstring connecting the lower funnel and the spring, 5-2 denotes the loop of the lower funnel tied to the drawstring, and 5-3 denotes the drain hole of the lower funnel.

In Figure 2, 1 represents the upper cover, 1-1 represents the area where the upper cover can drill through the water, 1-2 represents the water passage of the upper cover, 6 represents the long funnel, and 6-1 represents the overflow window on the long funnel. 6-2 indicates the drain hole of the long funnel.

In Fig. 3, 7 denotes a cone float, 7-1 denotes the tip of the cone float, 8 denotes a ring valve, and 8-1 denotes a bolt connecting the ring valve and the cone float.

In Figure 4, 1 represents the upper cover, 1-1 represents the area where the upper cover can drill through the water, 1-2 represents the water passage of the upper cover, 3 represents the sewer, 9 represents the single funnel, and 9-1 represents the single funnel The drain hole, 10 represents a single float valve.

In Figure 5, 1 represents the upper cover, 1-1 represents the area where the upper cover can drill through the water, 1-2 represents the water passage of the upper cover, 1-4 represents the elastic steel mounting bolt, 3 represents the sewer, 4 Denotes the upper edge, 11 denotes an elastic steel sheet, 12 denotes a drawstring connected with the elastic steel sheet, 13 denotes a drawstring connected with the manhole cover, 14 denotes a disc-shaped valve, and 15 denotes a hinge.

Detailed ways:

It's all extremely simple. As shown in Figure 1, the upper cover 1 is actually the current manhole cover. To make a floor drain in a household bathroom requires designing such a cover. It must have a certain strength, that is, it must not be too thin to prevent deformation. The punch should be in the middle of the cover, which is the area indicated by 1-1 in the figure. 2 The rubber sealing ring is an optional part. For the rough manhole cover, a sealing ring can be added, and it is not necessary to install the smoother manhole cover. 3 means the sewer. Some sewers are in the shape of a bell mouth. It does not matter. As long as 1 and 3 can be closed, there is no problem. The upper edge 4 is a metal ring whose lower edge diameter should be slightly larger than the lower funnel, which can slide up and down along the inner wall of the upper edge, the upper edge has a small inclination, and the lower edge is slightly larger than the upper edge. Its width should not be too wide, generally a quarter of the diameter of its circle. The spring can be installed directly on the installation table. In some places where there are a lot of impurities in the drainage, you can also make the upper edge into an inverted V shape, and use the edges to rub against each other to clean up the remaining attachments on the edge of the lower funnel. 5 represents the lower funnel of the core component. Its diameter is generally 0.7 times the inner diameter of the sewer. Its depth can generally be equal to its diameter. There is no strict requirement on the inclination of the funnel underneath. The heavier the sediment, the greater the angle between it and the horizontal plane. The diameter of the funnel hole indicated by 5-3 refers to the size of the upper cover plate eye, which is slightly larger than the water passing hole. The outer diameter of the 1-4 top post should be exactly the same as the funnel hole, its front part can be sharper, and its length should ensure that it is inserted into the funnel hole, that is, when the lower funnel and the upper edge or the upper cover are pulled back by the spring, the top The column insertion funnel hole is slightly protruding, generally about 5mm.

Its working principle is: in a dry state where there is no water to drain, the lower funnel is connected to the spring by a drawstring, and the length of the drawstring is adjusted so that the lower funnel and the upper edge are tightly closed or the upper edge is omitted and the upper cover is tightly closed, then the sewer First, the odor or parasites cannot enter the funnel through the gap between the two and then run out of the water-passing eye of the upper cover. Second, because the top pillar just plugs the hole of the lower funnel, the odor or parasites Nor can it enter the funnel from the funnel hole and then run out of the eye of the water. Therefore, the structure in the dry state is deodorant and also anti-parasites. Even if it is dry for three or five years, the anti-overflow structure of the manhole cover for preventing gas and biological anti-overflow is always in the closed state, still preventing harmful gases such as odors, and preventing organisms such as sewer parasites.

When there is a small amount of water to be discharged, the water enters the lower funnel from the water passing hole of the upper cover. The lower funnel becomes heavier because of the addition of water. Because the spring is connected to it, it will fall down. At this time, the top column is from the funnel. The hole comes out, and the water enters the sewer from the hole of the funnel. When there is a large amount of water to be discharged, if there is debris in it, the grate function of the upper cover can block the part, and only the small size that can pass through the water eye enters the lower funnel. Because of the large water flow, the drain hole of the lower funnel cannot drain the water in time. The lower funnel is full and becomes very heavy. Due to the force of the spring, the lower funnel will disengage from the upper cover or the upper edge, and the gap is with the water. The flow is directly proportional. The large amount of water overflows from the upper edge of the lower funnel to the sewer, realizing rapid drainage and preventing water accumulation. When the drain is nearing the end, the water flow becomes smaller, and the lower funnel becomes lighter due to the lack of water. The lower funnel slowly shrinks upwards and slowly closes with the upper edge or the upper cover. The water is mainly discharged from the drain hole of the lower funnel, and the current funnel When there is little water, the top column is slowly inserted into the hole of the lower funnel until it returns to an anhydrous state.

The selection of the spring in this structure should satisfy that the elastic deformation of the lower funnel is generally 50% when it is filled with water. The spring can also be replaced by an elastic steel sheet or bamboo sheet, so our ancestors could implement the present invention more than 2,000 years ago. The spring can also be installed vertically, but consider trying not to keep it in contact with water frequently. Although the current stainless steel spring is not afraid of water, the sundries in the water will affect the spring. It is gratifying that I also came up with another structure that does not use springs, a buoyancy reset structure that Archimedes could implement more than 2,000 years ago.

As shown in Figure 2, the upper cover plate and the long funnel 6 shown in Figure 1 are directly screwed together, but the ring valve with the conical float shown in Figure 3 should be installed before installation. Just fit the cone 7-1 tip directly to the hole of 6-2. The long funnel 6 is screw-mounted with the 4-2 additional mounting platform as shown in the upper edge of Fig. 1 and the upper cover plate. As for the production materials, stainless steel is widely used now. Copper and electroplating are traditional. Urban sewers are not demanding. I think tinplate can be used.

Working principle: When designing, the distance between 7-1 and 8 is exactly equal to the distance between 6-2 and 6-1. Therefore, when the tip of the cone float is pushed into the hole of 6-2, the circle shape represented by 8 The valve just closes the overflow window of 6-1. The diameter of the ring valve is equal to the inner longitude of the long funnel 6. The tapered float 7 should be hollow, for example made of stainless steel. Of course, the float and ring valve can all adopt other shapes. Reasonably adjust the size of the 6-2 hole and the width of the ring valve so that the 6-1 will only open when the drainage flow reaches a certain value. The taper of the conical float should be greater than the taper of the long funnel, at least different. When the drainage flow is small, the water is mainly discharged from the hole under the 6-2 long funnel. The drainage flow is large. The buoyancy of the water on the cone float will lift the ring valve up and open it completely. After the drainage is complete, the cone float is reset, and both 6-2 and 6-1 are closed again. It fully meets the requirements of anti-blocking, anti-odor, anti-swelling, anti-overtime drying, anti-parasitic organisms, etc. There is no problem after several years of drying.

Of course, from the perspective of this principle, it seems that there is no 6-1 overflow window and ring valve, and only 6-2 drainage can be used to complete the above-mentioned functions. Just make the 6-2 hole larger. For example, Figure 4. In Figure 4, only a single funnel 9 with a drain hole 9-1 and a single float valve are formed. Perhaps this is the most simplified structure. As long as the weight and volume of the bullet-shaped cone-shaped float, that is, the single float valve 9 are set to meet a certain ratio, for example, the density value is less than 1, such as 0.7-0.8, it should be able to meet the requirements. Perhaps the drainage speed of this simplest structure is relatively low, perhaps not low when the design is reasonable, for example, the size of the drainage hole 9-1 is appropriate. Which structure is the best in the end, there will be a conclusion after extensive testing.

In addition, the embodiments of the present invention are all circular funnels, based on the same principle, wedge shapes are of course also possible, and spherical, triangular pyramids, quadrangular pyramids, etc. are also possible. Because many manhole covers are still square, the connection of the square manhole covers should of course be a quadrangular pyramid. Of course, the float of the present invention can also have similar shapes that can be matched with these shapes, that is, the top of the float must be just pushed into the drain hole of the funnel to prevent the back overflow of gas and organisms. Just pay attention to the difference between the taper of the float and the taper of the funnel. Otherwise, how can the water reach the top of the float and float the float from the bottom? Of course, to meet the design requirements, it is economical and applicable. The above-mentioned various structures can be made into a small size and installed in the floor drain of the bathroom.

At present, water seals are widely used for floor drains in toilets, and water seals are still the recommended structure even in places with high requirements. The above opening and closing structures are proposed because the inventor believes that although some use requirements of the manhole cover and the bathroom floor drain are similar, there are still many differences in the use environment, and the water seal does not meet the requirements. This has been fully explained in the background technology. . From the perspective of structural principles, it should be possible to make these structures proposed in the present invention into bathroom floor drains to meet the requirements for floor drains in places where the water seal anti-overtime drying performance cannot be reached. Of course, other structures that are currently more successful in the toilet floor drain can also be tried to be applied to the design of the manhole cover. Moreover, there is a simpler structure than the above-mentioned proposal of the present invention.

For example, add a valve composed of hinges, elastic steel sheets and drawstrings under the manhole cover. As shown in Figure 5, a ring-shaped upper edge 4 is installed under the original manhole cover as the upper cover 1, a hinge 15 is added, a disc valve 14 is installed, and the original sheet valve is installed on the upper side with a drawstring 12 The elastic steel sheet 11 on the cover plate is connected. In order to limit the maximum displacement of the valve, a drawstring 13 is used to connect the valve and the upper cover plate. When water needs to be drained, the valve opens downwards due to gravity due to the weight of the water. After draining is completed, the elastic steel sheet resets it. This kind of structure is relatively simpler. It does not use the funnel shape proposed in the previous three structures. It seems that the working principle is also very reasonable. However, its environmental adaptability is relatively poor. If it is easy to use, or if something is stuck on the side of the valve, the valve will fail and the odor and bugs can pass. Therefore, the hinge structure is not suitable for the application of such large-size valve connection. Therefore, without extensive application and practice, the funnel-shaped structure proposed by the present invention is a preferred structure that I deduced from the different use environments of toilet floor drains and urban sewer pipe network manhole covers after many considerations, especially the one shown in Figure 1. Structure, its reliability is relatively high.

For many years, I have paid attention to the bathroom, and I always feel that there seems to be something to be improved. In 2016, he proposed "Portable Toilet with the Feel of Car Home", "Men's Toilet with Door Open", and "A Bionic Toilet". A few days ago, I carefully studied the floor drain and extended it to the manhole cover of the urban sewer pipe network, and took the first step in the design of the manhole cover against gas and biological anti-overflow. Since I am not my major, I am working behind closed doors, and I propose some simple improvements. It is unavoidable that I have not considered it properly. I may not think of a more excellent technical solution in a short time. I would like to use this invention to provide a reference for experts.

The above is the specific implementation of the text submitted by me on February 14, 2019. My original idea was to implement the above-mentioned structure in the sewage pipe and drainage pipe system in a unified way. In the autumn of 2019, the community where I live in Beichen, Tianjin, underwent a renovation of the drainage network to achieve separation of rain and sewage. Therefore, I also think that it is best to take measures separately according to the actual situation of different pipe networks. Now, in order to solve this very urgent and important issue of preventing the spread of the new crown pneumonia virus, this note is hereby added. Let me declare that the plan given here is the same as the above, it is purely a superficial idea of the individual. I hope that the relevant experts will make their own decisions based on the actual situation and job requirements in accordance with the procedures. This simple method can be implemented immediately. The Japanese called 022 88908890 on February 9 and described that they can immediately mobilize the staff of various communities, environmental sanitation departments, etc., to wrap soil or waste paper in plastic bags to immediately block the manhole cover hole, and the manhole cover of all sewage pipes. Cover for this treatment, especially in crowded places such as residential quarters and sidewalks. The plastic bags and soil used are easy to obtain. The specific size is determined by the size of the air outlet of the manhole cover, and it is as tight as possible. Of course, there may also be a problem to be solved. Since it is mentioned above that there is often biogas inside the sewage pipe, if it is stuffed in this way, if it encounters flammable materials or sparks, it will easily explode. . To this end, I also give a method that can be implemented immediately, which is to install exhaust ports and air anti-virus devices in certain areas. Install an air conditioning fan that many people use in summer in a manhole that is easy to manage or take care of, and add a suitable concentration of 84 disinfectant to its water tank. There is a more scientific device that I invented in 2010, "Heavy Rain Curtain Wind Flow Window", and the utility model patent CN201981968U. The equipment is specially designed for humidification, dust removal, and sterilization. It can be used to deal with sandstorms. It can be used for dust removal and SO ₂ reduction in coal-fired power plants. Here I also give a convenient management structure, which is to use a large carton or metal box to cover the manhole cover, and put the air-conditioning fan or heavy rain curtain airflow window in the box, and open the air outlet of the air-conditioning fan in the same way as the air-conditioning fan. For large and small openings, the air outlet of the air conditioner fan faces the opening of the outer cover box. The box has no bottom, and the bottom side is in direct contact with the ground. It is required to use engineering glue or cement to seal and stabilize. It is best to add a large cover on the top of the box to prevent rain. In this way, not only can the gas inside the sewage pipe be discharged, but also the discharged gas can be strictly disinfected. In order to achieve the purpose of better exhausting the toxic gas in the sewage pipe, I think a blower can be used to blow air into the pipe from another sewage well that is a certain distance away from the exhaust well. In this way, even if the effect of removing the virus gas is not considered, the removal of the biogas in the sewage pipe is also effective. The aforementioned incident of children throwing light firecrackers from the manhole cover into the inside and being blown up can be avoided. In fact, it can be used alone in various hospitals, wards, crowded places, and homes. This method of air conditioning fans and 84 disinfectant that has been used for more than ten years can be used to disinfect and purify the air. Hospital for patients with highly contagious new coronavirus pneumonia. Of course, the effect of making "Heavy Rain Curtain Wind Flow Window" is even better!

The method described in [0023] above can be implemented wherever you can see the description of the method during this epidemic. Some government departments want to implement this method, please be sure to say hello to me, even a phone call or a text message. My phone number is 13821127784, and I look forward to your call. This method is a temporary method during this epidemic, and in the future, some companies will undertake the mechanical processing and construction projects mentioned earlier in this article, and then carry out the formal engineering construction. Even the construction of this simple method must be well-behaved. With my plan, specific engineering design, construction, inspection, acceptance, and management must be carried out. The relevant health agencies must conduct medical inspections on the implementation effects.

Claims

The anti-gas and biological anti-overflow manhole cover is an innovation in extending the toilet's odor-resistant floor drain to the structure of the manhole cover. Its characteristic is: the anti-gas and biological anti-overflow device is installed on the manhole cover to control the opening and closing of the funnel drainage channel. The top column structure, its anti-overflow control structure is based on the interaction of gravity, elastic force and buoyancy of the flow difference to automatically control the opening and closing of the drainage channel. It consists of an upper cover plate with a grate and a top column and a spring It is composed of the upper edge and lower funnel, the upper edge is fixed on the upper cover plate, the lower funnel is connected with the spring of the upper edge by a drawstring, the top post can be pushed into the drainage hole of the lower funnel; The cover plate is composed of a long funnel with overflow window and a built-in ring valve with a float. The top of the float can be pushed into the drainage hole under the long funnel; it can also be connected to a single funnel by an upper cover plate with a grate, with a built-in monomer It is composed of a float valve. The top of the float valve can be pushed into the drainage hole under the single funnel; it can also be composed of an upper cover plate with elastic steel sheets and a circular sheet valve with a hinged upper edge connection. At the same time, the drainage system of rain and sewage separation is proposed to block the sewage pipe manhole cover eye, the regional set point exhaust port plus the air anti-virus device, and the set point manhole cover eye plus blower air supply structure.
The gas and biological anti-overflow manhole cover according to claim 1, wherein the funnel and float contained in the anti-overflow control structure are circular funnels, wedge-shaped funnels, conical funnels, spherical funnels, and circular funnels. Floats, spherical floats, cone-shaped floats, wedge-shaped floats.
The anti-gas and biological anti-overflow manhole cover according to claim 1, wherein the anti-overflow structure is installed in the bathroom floor drain in a small-sized structure, and the anti-overflow control structure controls the opening and closing of the drainage channel The control mechanism is composed of an upper cover plate with a grate and a top column, an upper edge and a lower funnel with springs, and the upper edge is fixed on the upper cover plate. The column can be pushed into the drain hole of the lower funnel; or it is composed of an upper cover with a grate and a long funnel with an overflow window and a ring valve with a float inside. The top of the float can be pushed into the drainage hole under the long funnel; Or it is composed of an upper cover plate with a grate connected to a single funnel and a built-in single float valve. The top of the float valve can be pushed into the drain hole below the single funnel.