Heating device of three-cell septic tank

Abstract

The invention belongs to the technical field of septic tank heating, and particularly relates to a heating device of a three-grid septic tank, the heating device comprises a septic tank body and a heating mechanism in the septic tank body, the heating mechanism comprises a heating assembly, a spiral heating pipe can heat a guide hole, and the heating pipe has two functions: 1, heating a manure-water mixture in the septic tank; and secondly, the manure passing pipe is heated, the situation that the whole interior of the septic tank body is blocked due to the fact that the temperature of the guide hole is low and the guide hole is frozen is avoided, and heating can be conducted through the spiral heating pipe at the guide hole. The heating mechanism can also adopt electric heating so as to provide a heat source for the septic tank in different scenes and environments. A hot steam generating device can be additionally arranged, and generated hot steam is directly introduced into the bottom of the first lattice of the septic tank, so that the purpose of rapidly heating to kill pathogens is achieved. The device can effectively shorten the innocent treatment time of excrement, and can also effectively eradicate and avoid potential spreading risks caused by pathogens such as parasite eggs, viruses and fungi.

Description

Technical Field

[0001] The invention relates to the technical field of septic tank heating, and in particular to a heating device for a three-chamber septic tank. Background Art

[0002] A septic tank is a device that processes feces and filters and precipitates them. The solidified matter decomposes at the bottom of the tank, and the hydrated matter on the upper layer flows into the pipe, preventing pipe blockage and giving the solidified matter sufficient time to hydrolyze. The widespread use of septic tanks has effectively reduced the spread and incidence of infectious diseases. A three-chamber septic tank consists of three connected tanks, which are connected by manure pipes. It mainly utilizes the principle of anaerobic fermentation, the middle layer of manure and parasite eggs having a higher specific gravity than the general mixed liquid and being easy to precipitate. The feces is fermented and decomposed in the tank for more than 30 days, and the middle layer of manure liquid flows from tank 1 to tank 3 in turn to achieve the purpose of precipitating or killing parasite eggs and intestinal pathogens in the feces. The manure liquid in the third tank becomes high-quality fertilizer, and fresh feces enters the first tank from the manure inlet. When fermentation and decomposition begin, the manure liquid can be naturally divided into three layers due to different specific gravities. The upper layer is a paste-like manure skin, the lower layer is a block or granular manure residue, and the middle layer is a relatively clear manure liquid. The upper manure skin and the lower manure residue contain the most bacteria and parasite eggs, and the middle layer contains the least worm eggs. The initially fermented middle layer manure liquid overflows to the second pool through the manure pipe, while most of the manure skin and manure residue that have not been fully fermented are retained in the first pool for further fermentation. The manure liquid flowing into the second pool is further fermented and decomposed, the worm eggs continue to sink, the pathogens gradually die, and the manure liquid is further rendered harmless. The thickness of the manure skin and manure residue produced is significantly reduced compared to the first pool. The manure liquid flowing into the third pool is generally fully decomposed, and the pathogens and parasite eggs have been basically killed. The main function of the third pool is to store the manure liquid that has been basically rendered harmless.

[0003] However, when the temperature is low in winter, the fermentation of the septic tank is greatly reduced, resulting in reduced efficiency of the septic tank. It is impossible to effectively kill the pathogens in the septic tank and reduce the incidence of infectious diseases. It is necessary to develop a three-chamber septic tank heating device with new functions.

[0004] For this purpose, a heating device for a three-chamber septic tank is needed. Summary of the invention

[0005] The three-chamber septic tank heating device proposed in the present invention solves the problem in the prior art that when the temperature is low in winter, the fermentation of the septic tank is greatly reduced, resulting in reduced utilization efficiency of the septic tank, and unable to effectively kill pathogens in the septic tank and reduce the incidence of infectious diseases.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A heating device for a three-chamber septic tank comprises a septic tank body and a heating mechanism inside the septic tank body, wherein the heating mechanism comprises a heating assembly;

[0008] The heating assembly includes an insulation layer, and the insulation layer is installed inside the side wall of the septic tank body. The top of the septic tank body is fixed to the top cover, and three groups of tank cavities are opened inside the septic tank body. The three groups of top covers are isolated by partitions, and guide holes are installed inside the partitions, and spiral heating tubes are installed around the outside of the guide holes. A temperature sensor is fixed on the side of the guide hole, and a sealed wire tube is installed on the top of the spiral heating tube, and an electric heating tube is installed on the left side of the sealed wire tube.

[0009] Preferably, the external array of the electric heating tube is installed with an external fixing plate, the right side of the guide hole is installed with a second pool heating tube, the front and rear sides of the pool cavity are installed with lower heat exchange tubes, the external array of the lower heat exchange tube is installed with heat exchange plates, the front end of the lower heat exchange tube is fluidly connected with the liquid inlet pipe, the liquid inlet pipe is driven by a pump body, the end of the liquid inlet pipe is fluidly connected with the top heat exchange tube, the other end of the top heat exchange tube is fluidly connected with the liquid outlet pipe, the top heat exchange tube array is installed inside the inner cavity, the inner cavity is opened inside the heat exchange plate, the surface of the heat exchange plate is fixed to the solar collector, the liquid inlet is installed on the lower right side of the front of the heat exchange plate, the liquid outlet is installed on the upper left side of the rear side of the heat exchange plate, and the septic tank body is opened on the upper left side. A feces outlet.

[0010] Preferably, two groups of symmetrical rear support rods are installed on the lower left side of the heat exchange plate, and the first rotating shaft is installed at both ends of the rear support rods. The rear support rods are connected to the translation frame below through the first rotating shaft, and a threaded rod is meshed and installed inside the translation frame. A bottom adjustment frame is installed outside the translation frame, and slide grooves matching the size of the translation frame are provided on the front and rear sides of the bottom adjustment frame. A driving motor is installed on the end of the threaded rod, and a second rotating shaft is installed at the bottom right of the heat exchange plate.

[0011] Preferably, the insulation layer is fixedly installed inside the septic tank body, and the sizes of the insulation layer and the septic tank body match each other.

[0012] Preferably, the spiral heating tube is spirally wound around the outer wall of the guide hole, the spiral heating tube is interconnected with the electric heating tube through a sealed wire tube, the electric heating tubes are distributed in an array, and the external fixing plates are distributed in an array on the outer wall of the electric heating tube.

[0013] Preferably, the liquid inlet pipe forms a flow structure with the lower heat exchange pipe through the cooperation between the top heat exchange pipe and the liquid outlet pipe, and the top heat exchange pipe is a meandering structure.

[0014] Preferably, the lower heat exchange tube is embedded in the septic tank body, two groups of the lower heat exchange tube are symmetrically arranged inside the device, the lower heat exchange tube is a zigzag installation structure, and the heat exchange plates are distributed in an array on the outer wall of the lower heat exchange tube.

[0015] Preferably, the liquid inlet forms a flow structure between the inner cavity and the liquid outlet, and the height of the liquid inlet is lower than the height of the liquid outlet.

[0016] Preferably, the rear support rod is connected to the heat exchange plate via a first rotating shaft, the rear support rod forms a rotating structure with the heat exchange plate via the first rotating shaft, and the rear support rod forms a rotating structure with the translation frame via the first rotating shaft.

[0017] Preferably, the translation frame forms a translation structure with the heat exchange plate and the bottom adjustment frame, and the translation frame forms a sliding structure with the bottom adjustment frame through a slide groove.

[0018] The present invention proposes a heating device for a three-chamber septic tank. Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the process of harmless treatment of feces in the traditional three-compartment septic tank, only microbial fermentation produces heat to kill parasite eggs, cysts and oocysts, as well as pathogens such as bacteria, viruses and fungi. Due to weather reasons, when the natural environment temperature is low, it is not conducive to the fermentation of microorganisms, especially in the north or in winter, the efficiency of harmless treatment of feces in the three-compartment septic tank will be greatly reduced, limiting the effect. Compared with previous inventions, the heating device provided by the present invention for the three-compartment septic tank makes up for the shortcomings of harmless treatment of feces in traditional septic tanks and improves the efficiency of harmless treatment of feces in septic tanks. Therefore, its use scenario is more in line with the needs of harmless treatment of feces, and makes up for the shortcoming that feces cannot be effectively harmlessly treated due to temperature reasons. At the same time, it can effectively shorten the time for harmless treatment of feces, can more efficiently carry out harmless treatment of feces, and can also effectively eliminate and avoid the potential transmission risks caused by parasite eggs, cysts and oocysts, as well as pathogens such as bacteria, viruses and fungi.

[0020] When in use, the spiral heating tube can heat the guide hole to prevent the guide hole from freezing due to low temperature and causing overall blockage of the septic tank body. The spiral heating tube can also heat the guide hole and cooperate with other heating components inside the device to achieve simultaneous heating in multiple locations in the tank cavity, so that the temperature of the fecal liquid inside the device can be evenly increased at all locations, thereby improving the heating efficiency of the fecal liquid inside the device. At the same time, when the electric heating tube is heating the internal fecal liquid, the external fixing plate can increase the contact area between the electric heating tube and the fecal liquid, thereby improving the heating efficiency of the fecal liquid, and achieving efficient heating while the fecal liquid inside the device can be statically settled.

[0021] 2. During the use of the present invention, the lower heat exchange tube is embedded in the side wall of the septic tank body to occupy as little space as possible inside the septic tank body, and then two groups are arranged on the inner wall of the septic tank body to improve the heating efficiency inside the device. By heating the clarified fecal liquid in the middle layer inside the tank cavity, the fermentation and decomposition efficiency of the fecal liquid inside the device is improved, and the efficiency of the septic tank body in harmless treatment of fecal liquid is improved.

[0022] 3. During the use of the present invention, industrial waste water or other hot water with a relatively high temperature is introduced into the inner cavity from the liquid inlet, and then the waste water slowly moves up and down through the liquid outlet to be discharged from the device. The method of introducing the waste water into the device through the liquid inlet can avoid the inner cavity having a heat dead corner, which affects the heat exchange efficiency inside the device. At the same time, the hot water introduced from the liquid inlet has the highest temperature, and the heat exchange medium entering the top heat exchange tube from the liquid inlet pipe has the lowest temperature, so that the medium inside the top heat exchange tube will first contact the hot water with a slightly lower temperature inside the inner cavity, and the hot water inside the inner cavity can be used as much as possible. Then, the high-temperature medium with the inside of the liquid inlet pipe is introduced from the top heat exchange tube into the interior of the lower heat exchange tube to heat the manure liquid inside the device. At the same time, the liquid outlet installed on the surface of the heat exchange plate can also assist in heating the hot water inside the inner cavity. By combining high-temperature waste water with solar energy, it is both environmentally friendly and energy-saving, and is particularly suitable for use in cold areas.

[0023] 4. During the use of the present invention, the angle of the heat exchange plate can be adjusted inside the device, and the driving motor drives the threaded rod to rotate inside the device. When rotating, it will drive the translation frame to translate left and right directions inside the device. During the translation process, the angle of the bottom of the rear support rod is adjusted, and the rear support rod adjusts the angle with the translation frame through the first rotating shaft. At the same time, the rear support rod also adjusts the angle with the top heat exchange plate through the first rotating shaft. In this way, the angle of the top heat exchange plate inside the device can be adjusted, so that when the solar collector uses solar energy to heat the water inside the inner cavity, it can be adjusted to the angle where solar energy is most sufficient, thereby improving the utilization efficiency of solar energy and improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the heating device of the three-chamber septic tank of the present invention.

[0025] Figure 2 The present invention is a schematic diagram of the solar collector structure of the heating device for the three-chamber septic tank.

[0026] Figure 3 This is a schematic diagram of the rear structural view of the solar collector of the heating device for the three-chamber septic tank of the present invention.

[0027] Figure 4 This is a schematic diagram of the solar collector driving structure of the heating device for the three-chamber septic tank of the present invention.

[0028] Figure 5 This is a schematic diagram of the internal structure of the heat exchange plate of the heating device of the three-chamber septic tank of the present invention.

[0029] Figure 6 It is a schematic diagram of the circulation structure of the heating component of the heating device of the three-chamber septic tank of the present invention.

[0030] Figure 7 This is a schematic diagram of the cross-sectional structure of a septic tank body of a heating device for a three-chamber septic tank of the present invention.

[0031] Figure 8 The present invention is a schematic diagram of the spiral heating tube structure of the heating device for the three-chamber septic tank.

[0032] Fig. 9 The present invention is a schematic diagram of the structure of the electric heating tube of the heating device of the three-chamber septic tank.

[0033] In the figure: 1. septic tank body; 2. insulation layer; 3. top cover; 4. tank cavity; 5. partition; 6. guide hole; 7. spiral heating tube; 8. temperature sensor; 9. sealed wire tube; 10. electric heating tube; 11. external fixing plate; 12. second tank heating tube; 13. lower heat exchange tube; 14. heat exchange plate; 15. pump body; 16. liquid inlet pipe; 17. top heat exchange tube; 18. liquid outlet pipe; 19. heat exchange plate; 20. inner cavity; 21. solar collector; 22. liquid inlet; 23. liquid outlet; 24. rear support rod; 25. first rotating shaft; 26. bottom adjustment frame; 27. slide groove; 28. translation frame; 29. ​​threaded rod; 30. drive motor; 31. second rotating shaft; 32. feces outlet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-9 , the present invention provides a technical solution: a heating device for a three-chamber septic tank, comprising a septic tank body 1 and a heating mechanism inside the septic tank body 1, the heating mechanism comprising a heating assembly;

[0036] The heating assembly includes an insulation layer 2, an insulation layer 2 is installed inside the side wall of the septic tank body 1, the top of the septic tank body 1 is fixed to the top cover 3, three groups of tank cavities 4 are opened inside the septic tank body 1, and the three groups of top covers 3 are isolated by partitions 5, and a guide hole 6 is installed inside the partition 5, and a spiral heating tube 7 is installed around the outside of the guide hole 6, and a temperature sensor 8 is fixedly installed on the side of the guide hole 6, and a sealed wire tube 9 is installed on the top of the spiral heating tube 7, and an electric heating tube 10 is installed on the left side of the sealed wire tube 9; due to the presence of more pathogens in the septic tank, such as bacteria, parasite eggs, intestinal protozoa, yeast and fungi, the use of fresh human manure to irrigate fruits and vegetables will spread and bring harm or risks; for example, soil pollution, livestock and poultry manure contains a lot of salt, excessive use may lead to soil salinization; raw manure It may also contain harmful substances such as caustic soda and heavy metals, which lead to soil pollution and harm crop growth; at the same time, raw manure usually contains more pathogens. After being applied to the greenhouse soil, the environmental conditions such as temperature and humidity are relatively suitable, which can easily cause the spread of pests such as maggots and soil-borne diseases such as root rot and wilting; if there are viruses in the feces, since the virus has a strong survival ability, directly watering vegetables with fresh feces is very likely to bring the virus remaining in the intestine to the leaves or roots of the vegetables, and then infect the eater; if the feces contain parasite eggs, the eggs are relatively resistant to the outside world, and some eggs will develop in the soil. If people eat or accidentally eat vegetables, fruits, raw water, etc. contaminated by eggs, it is easy to cause parasitic infection or parasitic diseases; therefore, when the manure is used, it is harmlessly treated by the spiral heating tube 7 to meet certain hygiene requirements.

[0037] Furthermore, the external array of the electric heating tube 10 is installed with an external fixing plate 11, the right side of the guide hole 6 is installed with a second pool heating tube 12, the front and rear sides of the pool cavity 4 are installed with lower heat exchange tubes 13, the external array of the lower heat exchange tube 13 is installed with heat exchange plates 14, the front end of the lower heat exchange tube 13 is connected with the liquid inlet pipe 16, the liquid inlet pipe 16 is driven by the pump body 15, the end of the liquid inlet pipe 16 is connected with the top heat exchange tube 17, the other end of the top heat exchange tube 17 is connected with the liquid outlet pipe 18, the top heat exchange tube 17 array is installed inside the inner cavity 20, the inner cavity 20 is opened inside the heat exchange plate 19, the surface of the heat exchange plate 19 is fixed to the solar collector 21, the liquid inlet 22 is installed on the lower right side of the front of the heat exchange plate 19, the liquid outlet 23 is installed on the upper left side of the rear side of the heat exchange plate 19, and the upper left side of the septic tank body 1 is opened with a feces port 32.

[0038] Furthermore, two groups of symmetrical rear support rods 24 are installed on the lower left side of the heat exchange plate 19, and first rotating shafts 25 are installed at both ends of the rear support rods 24. The rear support rods 24 are connected to the lower translation frame 28 through the first rotating shaft 25. The internal meshing installation of the translation frame 28 is provided with a threaded rod 29, and the external installation of the translation frame 28 is provided with a bottom adjustment frame 26. The front and rear sides of the bottom adjustment frame 26 are provided with slide grooves 27 that match the size of the translation frame 28. A driving motor 30 is installed at the end of the threaded rod 29, and a second rotating shaft 31 is installed at the right bottom of the heat exchange plate 19.

[0039] Furthermore, the insulation layer 2 is fixedly installed inside the septic tank body 1, and the sizes of the insulation layer 2 and the septic tank body 1 match each other. During use, the septic tank body 1 can be protected, and the heat loss of the fecal liquid inside the device during the fermentation process can be reduced, and the thermal insulation performance of the device inside the device in seasons with lower temperatures can be improved to avoid the low temperature affecting the heating effect of the device, and also to avoid the low temperature affecting the fermentation effect of the fecal liquid in the device.

[0040] Furthermore, the spiral heating tube 7 is spirally wound around the outer wall of the guide hole 6, and the spiral heating tube 7 is connected to the electric heating tube 10 through the sealed wire tube 9. The electric heating tubes 10 are arranged in an array, and the external fixing plates 11 are arranged in an array on the outer wall of the electric heating tube 10. During use, the spiral heating tube 7 can heat the guide hole 6 to avoid freezing at the guide hole 6 due to low temperature, which leads to overall blockage of the interior of the septic tank body 1. The spiral heating tube 7 can also heat the guide hole 6, and cooperate with other heating components inside the device to achieve simultaneous heating of multiple locations in the tank cavity 4, so that the fecal liquid inside the device is heated everywhere. It can evenly increase the temperature and improve the heating efficiency of the fecal liquid inside the device. At the same time, when the electric heating tube 10 is heating the internal fecal liquid, the external fixing plate 11 can increase the contact area between the electric heating tube 10 and the fecal liquid, thereby improving the heating efficiency of the fecal liquid, and realizing efficient heating while the fecal liquid inside the device can be statically precipitated. At the same time, the three-chamber septic tank is composed of three connected tanks, which mainly utilizes the principle of anaerobic fermentation, middle-layer feces and parasite eggs having a higher specific gravity than the general mixed liquid and are easy to precipitate, thereby basically killing the pathogens and parasite eggs therein, and storing the fecal liquid that has been basically rendered harmless.

[0041] Furthermore, the liquid inlet pipe 16 forms a flow structure with the lower heat exchange pipe 13 through the cooperation between the top heat exchange pipe 17 and the liquid outlet pipe 18. The top heat exchange pipe 17 has a zigzag structure. During use, the top heat exchange pipe 17 exchanges heat inside the inner cavity 20 to increase the temperature of the relatively low-temperature medium inside the liquid inlet pipe 16. After the heat exchange, it enters the interior of the lower heat exchange pipe 13 through the liquid outlet pipe 18 to exchange heat with the fecal liquid inside the device. The zigzag structure of the top heat exchange pipe 17 can increase the contact area with other media inside the inner cavity 20, improve the heat exchange efficiency between the top heat exchange pipe 17 and the inner cavity 20, and thus improve the heating efficiency of the fecal liquid inside the device.

[0042] Furthermore, the lower heat exchange tube 13 is embedded and installed between the septic tank body 1, and two groups of lower heat exchange tubes 13 are symmetrically arranged inside the device. The lower heat exchange tube 13 is a ring-shaped installation structure, and the heat exchange plate 14 is distributed in an array on the outer wall of the lower heat exchange tube 13. During use, the lower heat exchange tube 13 is embedded and installed on the side wall of the septic tank body 1 to occupy as little space as possible inside the septic tank body 1, and then two groups are arranged on the inner wall of the septic tank body 1 to improve the heating efficiency inside the device. By heating the clarified fecal liquid in the middle layer inside the tank cavity 4, the fermentation and decomposition efficiency of the fecal liquid inside the device is improved, and the efficiency of the septic tank body 1 in harmless treatment of the fecal liquid is improved.

[0043] Furthermore, the liquid inlet 22 forms a flow structure between the inner cavity 20 and the liquid outlet 23. The height of the liquid inlet 22 is lower than that of the liquid outlet 23. During use, industrial wastewater or other hot water with a relatively high temperature is introduced into the inner cavity 20 from the liquid inlet 22, and then the wastewater slowly moves up and down and is discharged from the device through the liquid outlet 23. The method of introducing the device through the liquid inlet 22 can avoid the inner cavity 20 having a heat dead corner, which affects the heat exchange efficiency inside the device. At the same time, the hot water introduced from the liquid inlet 22 has the highest temperature and enters the top heat exchange tube 17 from the liquid inlet pipe 16. The internal heat exchange medium has the lowest temperature, so that the medium inside the top heat exchange tube 17 will first contact the hot water with a slightly lower temperature inside the inner cavity 20. The hot water inside the inner cavity 20 can be used as much as possible, and then the high-temperature medium with the liquid inlet pipe 16 is introduced from the top heat exchange tube 17 into the lower heat exchange tube 13 to heat the manure liquid inside the device. At the same time, the liquid outlet 23 installed on the surface of the heat exchange plate 19 can also assist in heating the hot water inside the inner cavity 20. By combining high-temperature wastewater with solar energy, it is both environmentally friendly and energy-saving, and is particularly suitable for use in cold areas.

[0044] Furthermore, the rear support rod 24 is connected to the heat exchange plate 19 through the first rotating shaft 25, and the rear support rod 24 forms a rotating structure with the heat exchange plate 19 through the first rotating shaft 25, and the rear support rod 24 forms a rotating structure with the translation frame 28 through the first rotating shaft 25. During use, the heat exchange plate 19 can adjust its angle inside the device, and the driving motor 30 drives the threaded rod 29 to rotate inside the device, which will drive the translation frame 28 to translate left and right directions inside the device during rotation. During the translation process, the angle of the bottom of the rear support rod 24 is adjusted, and the rear support rod 24 adjusts its angle with the translation frame 28 through the first rotating shaft 25. At the same time, the rear support rod 24 also adjusts its angle with the top heat exchange plate 19 through the first rotating shaft 25, so that the angle of the top heat exchange plate 19 inside the device can be adjusted, so that when the solar collector 21 uses solar energy to heat the water inside the inner cavity 20, it can be adjusted to the angle where solar energy is most sufficient, thereby improving the utilization efficiency of solar energy and improving the flexibility of the device.

[0045] Furthermore, the translation frame 28 forms a translation structure between the heat exchange plate 19 and the bottom adjustment frame 26, and the translation frame 28 forms a sliding structure between the bottom adjustment frame 26 through the slide groove 27. During use, the driving motor 30 drives the threaded rod 29 to rotate inside the device, and then the threaded rod 29 drives the translation frame 28 to translate inside the device. During translation, the translation frame 28 slides inside the slide groove 27, so that the overall operation of the device is more stable and the adjustment of the heat exchange plate 19 is smoother.

[0046] Working principle: First, the fecal liquid enters the interior of the tank cavity 4 through the fecal opening 32, and then the fecal liquid settles and layers, and the clarified fecal liquid in the middle enters the next tank cavity 4 through the guide hole 6. At this time, the spiral heating tube 7 can heat the guide hole 6 to prevent the guide hole 6 from freezing due to low temperature and causing overall blockage of the interior of the septic tank body 1, and the spiral heating tube 7 can also be used to heat the guide hole 6, and cooperate with other heating components inside the device to achieve simultaneous heating in multiple locations in the tank cavity 4, so that the temperature of the fecal liquid inside the device can be evenly increased at various locations, thereby improving the heating efficiency of the fecal liquid inside the device. At the same time, when the electric heating tube 10 is heating the internal fecal liquid, the external fixing plate 11 can increase the contact area between the electric heating tube 10 and the fecal liquid, thereby improving the heating efficiency of the fecal liquid, and achieving efficient heating while the fecal liquid inside the device can be statically precipitated.

[0047] Industrial waste water or other hot water with relatively high temperature is introduced into the inner cavity 20 from the liquid inlet 22, and then the waste water slowly moves up and down and is discharged from the device through the liquid outlet 23. The method of introducing the waste water into the device through the liquid inlet 22 can avoid the inner cavity 20 having a heat dead corner, which affects the heat exchange efficiency inside the device. At the same time, the hot water introduced from the liquid inlet 22 has the highest temperature, and the heat exchange medium entering the top heat exchange tube 17 from the liquid inlet pipe 16 has the lowest temperature, so that the medium inside the top heat exchange tube 17 will first contact the hot water with a slightly lower temperature inside the inner cavity 20, and the hot water inside the inner cavity 20 can be used as much as possible, and then the high-temperature medium with the inside of the liquid inlet pipe 16 is introduced from the top heat exchange tube 17 into the lower heat exchange tube 13 to heat the manure liquid inside the device.

[0048] The liquid outlet 23 installed on the surface of the heat exchange plate 19 can also assist in heating the hot water inside the inner cavity 20. By combining high-temperature wastewater with solar energy, it is both environmentally friendly and energy-saving, and is particularly suitable for use in cold areas. The lower heat exchange tube 13 is embedded in the side wall of the septic tank body 1, occupying as little space as possible inside the septic tank body 1, and then two groups are arranged on the inner wall of the septic tank body 1 to improve the heating efficiency inside the device. By heating the clarified fecal liquid in the middle layer of the tank cavity 4, the fermentation and decomposition efficiency of the fecal liquid inside the device is improved, and the chemical The manure tank body 1 improves the efficiency of harmless treatment of fecal liquid; at the same time, the driving motor 30 drives the threaded rod 29 to rotate inside the device, and then the threaded rod 29 drives the translation frame 28 to translate inside the device. During translation, the translation frame 28 slides inside the slide groove 27, so that the overall operation of the device is more stable, and the adjustment of the heat exchange plate 19 is smoother, so that when the solar collector 21 uses solar energy to heat the water inside the inner cavity 20, it can be adjusted to the angle where solar energy is most sufficient, thereby improving the utilization efficiency of solar energy and improving the flexibility of the device.

[0049] Several experiments are provided below to demonstrate the insecticidal and sterilizing performance of the device.

[0050] Experiment 1: Heat killing of fertilized Ascaris eggs in a three-chamber septic tank;

[0051] Take a three-chamber septic tank toilet for 4-6 people as an example. The total volume of the three-chamber septic tank is 3 cubic meters, and the volume ratio of the first, second and third tanks should be 2:1:3. Place the heating device in the first tank of the three-chamber septic tank, then inject 1 cubic meter of tap water, and place the temperature sensor probe 15 cm underwater to monitor temperature changes. Put 1000g of feces containing fertilized ascarid eggs into a container of 5L water, and break up the feces by stirring to form a suspension. Then, add all the above suspension containing fertilized ascarid eggs to the first tank of the three-chamber septic tank. Mix the added egg suspension with 1 cubic meter of tap water by stirring. Then, cover the cover and let it stand overnight. The next morning, connect the heating device to the power supply, turn on the switch, and the heating module works to heat the fecal water mixture containing fertilized ascarid eggs. When the temperature of the temperature sensor reaches 75°C, the power supply is automatically cut off. Subsequently, when the temperature drops below 25°C, the cover is opened and an appropriate amount of feces at the bottom of the first pool is collected using a sampler. The ascarid eggs in the feces are collected using an egg collection method, and then the collected fertilized ascarid eggs are smeared on a clean slide, which is covered with a layer of filter paper, and one end of the filter paper is immersed in a culture dish containing a culture solution (sterile physiological saline + penicillin 100U / mL, streptomycin 0.1mg / mL), and the slide is placed in a 37°C constant temperature incubator for culture. A small amount of eggs are taken on the 1st, 3rd, and 5th day after culture and placed under an optical microscope to observe the egg development, and the eggs are graded and counted according to the development stages of single cell, 2 cells, 4 cells and eggs containing ascariae. The results show that after being heated by the heating device, the ascarid eggs in the feces all stay in the single cell stage, and no ascarid eggs containing ascariae are observed, indicating that the device can kill 100% of the fertilized ascarid eggs in the feces.

[0052] Experiment 2: Heat killing of hookworm eggs in three-chamber septic tanks;

[0053] Take a three-chamber septic tank toilet for 4-6 people as an example. The total volume of the three-chamber septic tank is 3 cubic meters, and the volume ratio of the first, second and third tanks should be 2:1:3. Place the heating device in the first tank of the three-chamber septic tank, then inject 1 cubic meter of tap water, and place the temperature sensor probe 15 cm underwater to monitor temperature changes. Put 1000g of feces containing hookworm eggs into a container of 5L water, and break up the feces by stirring to form a suspension. Then, add all the above suspension containing eggs to the first tank of the three-chamber septic tank. Mix the added egg suspension with 1 cubic meter of tap water by stirring. Then, cover the cover and let it stand overnight. The next morning, connect the heating device to the power supply, turn on the switch, and the heating module works to heat the feces and water mixture containing fertilized roundworm eggs. When the temperature of the temperature sensor reaches 56°C, the power supply is automatically cut off. Then, when the temperature dropped below 25°C, the cover was opened and an appropriate amount of feces was collected from the bottom of the first pool using a sampler. Hookworm eggs in feces were collected using the saturated salt water flotation method, and then the hookworm larvae culture method was used to observe the development of the eggs. A small amount of eggs were taken 1, 3, and 5 days after culture and placed under an optical microscope to observe the development of the eggs, and the eggs were graded and counted according to the developmental stages of single cell, 2 cells, 4 cells, and hookworms. The results showed that after being heated by the heating device, the hookworm eggs in the feces remained in the single cell stage, and no hookworm eggs containing hookworms were observed, indicating that the device can kill 100% of the hookworm eggs in the feces.

[0054] Experiment 3: Heat killing of Schistosoma japonicum eggs in three-chamber septic tanks;

[0055] Take a three-chamber septic tank toilet for 4-6 people as an example. The total volume of the three-chamber septic tank is 3 cubic meters, and the volume ratio of the first, second and third tanks should be 2:1:3. Place the heating device in the first tank of the three-chamber septic tank, then inject 1 cubic meter of tap water, and place the temperature sensor probe 15 cm underwater to monitor temperature changes. Put 1000g of feces containing Schistosoma japonicum eggs into a container of 5L water, and break up the feces by stirring to form a suspension. Then, add all the above suspension containing eggs to the first tank of the three-chamber septic tank. Mix the added egg suspension with 1 cubic meter of tap water by stirring. Then, cover the cover and let it stand overnight. The next morning, connect the heating device to the power supply, turn on the switch, and the heating module works to heat the feces and water mixture containing Schistosoma japonicum eggs. When the temperature of the temperature sensor reaches 75℃, the power supply is automatically cut off. Then, when the temperature dropped below 25°C, the cover was opened and an appropriate amount of feces was collected from the bottom of the first pool using a sampler. The eggs of Schistosoma japonicum in the feces were collected using the egg collection method, and the collected Schistosoma japonicum eggs were hatched using the miracidium hatching method. The results showed that after being treated by the heating device, the collected eggs could not hatch.

[0056] Experiment 4: Heat-killing test of E. coli in three-chamber septic tank;

[0057] Take a three-chamber septic tank toilet for 4-6 people as an example. The total volume of the three-chamber septic tank is 3 cubic meters, and the volume ratio of the first, second and third tanks should be 2:1:3. Place the heating device in the first tank of the three-chamber septic tank, then inject 1 cubic meter of tap water, and place the temperature sensor probe 15 cm underwater to monitor temperature changes. Put 1000g of feces into a container of 5L water, and break up the feces by stirring to form a suspension. Then, add all the above suspensions to the first tank of the three-chamber septic tank. Mix the added feces suspension with 1 cubic meter of tap water by stirring. Then, cover the cover and let it stand overnight. The next morning, connect the heating device to the power supply, turn on the switch, and the heating module works to heat the feces-water mixture. When the temperature of the temperature sensor reaches 75°C, the power supply is automatically cut off. Then, when the temperature drops below 25°C, open the cover and use the sampler to collect an appropriate amount of feces at the bottom of the first tank. Then take a small amount of feces and add it to LB liquid culture medium (ampicillin 100μg / mL + kanamycin 50μg / mL), place the culture tube in a shaker and fix it, and culture it overnight at 37°C, 200rpm. The next morning, after the culture tube was inverted and mixed, a small amount of culture solution was taken, and the growth of E. coli was observed using a spectrophotometer. At the same time, a small amount of feces was evenly smeared on LB solid culture medium (ampicillin 100μg / mL + kanamycin 50μg / mL), and the culture dish was placed in a bacterial incubator at 37°C for overnight culture. The next morning, observe the growth of bacteria on the plate. The above experimental results show that no E. coli growth was observed in either liquid or solid culture medium.

[0058] It can be seen that the heating device can effectively kill insects and sterilize, which is of great help in improving the sanitary conditions of septic tanks.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating device for a three-chamber septic tank, comprising a septic tank body (1) and a heating mechanism inside the septic tank body (1), characterized in that: The heating mechanism includes a heating assembly; The heating assembly comprises a heat-insulating layer (2), the heat-insulating layer (2) is installed inside the side wall of the septic tank body (1), the top of the septic tank body (1) is fixed to the top cover (3), three groups of tank cavities (4) are opened inside the septic tank body (1), and the three groups of top covers (3) are isolated by partitions (5), a guide hole (6) is installed through the inside of the partition (5), a spiral heating tube (7) is installed around the outside of the guide hole (6), a temperature sensor (8) is fixedly installed on the side of the guide hole (6), a sealed wire tube (9) is installed on the top of the spiral heating tube (7), and an electric heating tube (10) is installed on the left side of the sealed wire tube (9).

2. A heating device for a three-chamber septic tank according to claim 1, characterized in that: The outer array of the electric heating tube (10) is installed with an outer fixing plate (11), the right side of the guide hole (6) is installed with two pool heating tubes (12), the front and rear sides of the pool cavity (4) are both installed with lower heat exchange tubes (13), the outer array of the lower heat exchange tube (13) is installed with heat exchange plates (14), the front end of the lower heat exchange tube (13) is connected to the liquid inlet pipe (16), the liquid inlet pipe (16) is driven by a pump body (15), and the end of the liquid inlet pipe (16) is connected to the top heat exchange tube (17). The other end of the top heat exchange tube (17) is fluidly connected to the liquid outlet pipe (18), the top heat exchange tube (17) array is installed inside the inner cavity (20), the inner cavity (20) is opened inside the heat exchange plate (19), the surface of the heat exchange plate (19) and the solar collector (21) are fixed to each other, the heat exchange plate (19) is provided with a liquid inlet (22) at the lower right side in front, the heat exchange plate (19) is provided with a liquid outlet (23) at the upper left side of the rear side, and the septic tank body (1) is provided with a feces outlet (32) at the upper left side.

3. A heating device for a three-chamber septic tank according to claim 2, characterized in that: Two groups of symmetrical rear support rods (24) are installed on the lower left side of the heat exchange plate (19), and first rotating shafts (25) are installed at both ends of the rear support rods (24). The rear support rods (24) are connected to the translation frame (28) below through the first rotating shaft (25). The translation frame (28) is internally meshed with a threaded rod (29), and the translation frame (28) is externally installed with a bottom adjustment frame (26). The front and rear sides of the bottom adjustment frame (26) are provided with sliding grooves (27) that match the size of the translation frame (28). A driving motor (30) is installed at the end of the threaded rod (29), and a second rotating shaft (31) is installed at the right bottom of the heat exchange plate (19).

4. The heating device for a three-chamber septic tank according to claim 1, characterized in that: The thermal insulation layer (2) is fixedly installed inside the septic tank body (1), and the dimensions of the thermal insulation layer (2) and the septic tank body (1) match each other.

5. The heating device for a three-chamber septic tank according to claim 1, characterized in that: The spiral heating tube (7) is spirally wound on the outer wall of the guide hole (6), the spiral heating tube (7) is connected to the electric heating tube (10) through a sealed wire tube (9), the electric heating tube (10) is distributed in an array, and the external fixing plate (11) is distributed in an array on the outer wall of the electric heating tube (10).

6. The heating device for a three-chamber septic tank according to claim 2, characterized in that: The liquid inlet pipe (16) forms a flow structure with the lower heat exchange pipe (13) through the cooperation between the top heat exchange pipe (17) and the liquid outlet pipe (18), and the top heat exchange pipe (17) is a meander-shaped structure.

7. The heating device for a three-chamber septic tank according to claim 2, characterized in that: The lower heat exchange tube (13) is installed in an interlocking manner with the septic tank body (1), and two groups of the lower heat exchange tube (13) are symmetrically arranged inside the device. The lower heat exchange tube (13) is a circular installation structure, and the heat exchange plates (14) are distributed in an array on the outer wall of the lower heat exchange tube (13).

8. The heating device for a three-chamber septic tank according to claim 2, characterized in that: The liquid inlet (22) forms a flow structure between the inner cavity (20) and the liquid outlet (23), and the height of the liquid inlet (22) is lower than the height of the liquid outlet (23).

9. The heating device for a three-chamber septic tank according to claim 3, characterized in that: The rear support rod (24) is connected to the heat exchange plate (19) via a first rotating shaft (25); a rotating structure is formed between the rear support rod (24) and the heat exchange plate (19); and a rotating structure is formed between the rear support rod (24) and the translation frame (28) via the first rotating shaft (25).

10. The heating device for a three-chamber septic tank according to claim 3, characterized in that: The translation frame (28) forms a translation structure with the heat exchange plate (19) and the bottom adjustment frame (26), and the translation frame (28) forms a sliding structure with the bottom adjustment frame (26) through the slide groove (27).

Images