Device for recycling heat in fermentation tank of ecological toilet

Abstract

The utility model discloses a heat recycling device in a fermentation tank of an ecological toilet, and belongs to the technical field of chemical production equipment. The device comprises a driving device, a slewing bearing, a first gas-water distributor and a stirring device, the stirring device comprises a stirrer main shaft, an aeration branch pipe and a spiral heat exchange stirring pipe for heat exchange, the driving device is connected with the stirrer main shaft through the slewing bearing, and the first gas-water distributor is respectively connected with the stirrer main shaft and the spiral heat exchange stirring pipe. According to the utility model, the nested water and air inlet hose structure is arranged, so that water and air can be introduced into the fermentation tank at the same time; the gas-water distributor is arranged to control the water and gas inflow, so that microorganisms in the fermentation tank are fully mixed with oxygen and humus and a large amount of biological latent heat is generated, and when the main shaft of the stirrer rotates, throwing, turning, oxygenating and heat exchanging of biological base materials can be achieved at the same time; and heat energy generated by biological fermentation in the fermentation tank is efficiently utilized to preheat sewage, so that the power consumption of a subsequent evaporator can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production equipment technology, specifically relating to a heat recovery and utilization device in an ecological toilet fermentation tank. Background Technology

[0002] Ecological toilets are mainly divided into two types: water-recirculating flush toilets and waterless toilets. Water-recirculating flush toilets mainly use physical, chemical, and biochemical methods to convert fecal waste and urine into carbon dioxide and water, and then reuse the recycled water for flushing.

[0003] However, existing ecological toilet sewage treatment systems are not optimized enough. The sewage mixing fermentation tanks have low processing efficiency, and the heat generated during fermentation requires dedicated heat exchange tubes for cooling, resulting in high energy consumption. Therefore, a device is needed that can efficiently utilize the bio-thermal energy generated by the ecological toilet fermentation tank while also achieving cooling and improving the fermentation tank's processing efficiency. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a heat recovery and utilization device in the fermentation tank of an ecological toilet, which can simultaneously realize the functions of turning over, oxygenating and heat exchange of biological substrate.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A heat recovery and utilization device in an ecological toilet fermentation tank includes a driving device, a first gas-water distributor, and a stirring device. The stirring device includes a stirring main shaft, an aeration branch pipe, and a spiral heat exchange stirring tube for heat exchange. The driving device is connected to the stirring main shaft, and the first gas-water distributor is connected to both the stirring main shaft and the spiral heat exchange stirring tube.

[0007] Preferably, it also includes a water inlet pipe, an air inlet pipe, a water outlet pipe, and an air outlet pipe, all of which are made of rubber or plastic flexible hoses.

[0008] Preferably, the water inlet pipe and the air inlet pipe are nested together, with the inner diameter of the water inlet pipe being larger than the outer diameter of the air inlet pipe. The air inlet pipe is inserted into the water inlet pipe from the oblique side and has a concentric air inlet pipe interface at the other end.

[0009] Preferably, the drive device includes a motor and a reducer, with the output shaft of the motor connected to the reducer, and the output shaft of the reducer connected to the top of the agitator main shaft via a slewing bearing.

[0010] Preferably, the first air-water distributor includes a central air inlet pipe and a water distribution chamber. One end of the central air inlet pipe is connected to the main shaft of the stirrer, and the other end is connected to the air inlet pipe. One end of the water distribution chamber is connected to the spiral heat exchange stirring tube, and the other end is connected to the water inlet pipe.

[0011] Preferably, the main shaft of the agitator has a hollow structure, the number of aeration branch pipes is at least four, and the number of spiral heat exchange agitator pipes is two.

[0012] Preferably, anti-clogging aeration heads are evenly arranged on the aeration branch pipe, and each aeration branch pipe is fixedly connected to the main shaft of the agitator.

[0013] Preferably, the spiral heat exchange stirring tube is fixedly connected to the aeration branch tube.

[0014] Preferably, the spiral heat exchange stirring tube is in the shape of a hollow, irregularly shaped spiral blade.

[0015] Preferably, a base bearing and a second air-water distributor are also included.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] 1) This utility model, by setting a nested water and air inlet hose structure, can simultaneously supply water and air into the fermentation tank. By setting an air-water distributor to control the water and air inlet volume, while aerating, the main shaft of the agitator drives the spiral heat exchange stirring pipe and aeration branch pipe to stir and aerate the material in the fermentation tank, so that the microorganisms in the fermentation tank are fully mixed with oxygen and humus, and the aerobic bacteria decompose the organic matter in the compost and generate a large amount of latent heat. When the main shaft of the agitator rotates, it can simultaneously realize the functions of turning over the biological substrate, oxygenating and heat exchange.

[0018] 2) This utility model recovers heat by setting up a unique spiral heat exchange coil, making full use of the heat generated by the aerobic microorganisms in the fermenter during the decomposition of materials, and efficiently using the heat energy generated by biological fermentation in the fermenter to preheat the sewage, which can effectively reduce the power consumption of the subsequent evaporator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the water inlet pipe and air inlet pipe of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first gas-water distributor of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second gas-water distributor of this utility model;

[0023] The components are as follows: 1. Water inlet pipe; 1.1 Water inlet pipe interface; 2. Drive device; 3. Slewing bearing; 3.1 Transmission flange; 3.2 Transmission gear; 4. First air-water distributor; 4.1 Heat exchange outlet; 5. Agitator main shaft; 6. Aeration branch pipe; 7. Spiral heat exchange stirring pipe; 8. Water outlet pipe; 9. Air inlet pipe; 9.1 Air inlet pipe interface; 10. Air outlet pipe; 11. Base bearing; 12. Second air-water distributor; 12.1 Hot water collection port. Detailed Implementation

[0024] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0025] like Figure 1-2 As shown, the heat recovery and utilization device in the fermentation tank of an ecological toilet according to this utility model mainly includes a water inlet pipe 1, a drive device 2, a slewing bearing 3, a first air-water distributor 4, a stirring device, a water outlet pipe 8, an air inlet pipe 9, an air outlet pipe 10, a base bearing 11, and a second air-water distributor 12. The stirring device includes a stirrer main shaft 5, an aeration branch pipe 6, and a spiral heat exchange stirring pipe 7.

[0026] The drive unit 2 is connected to the stirring device via a slewing bearing 3. The drive unit 2 includes a motor and a reducer. The output shaft of the motor is connected to the reducer. The reducer can increase the output torque while reducing the speed and also reduce the load inertia. The drive unit 2 drives the stirring device to stir inside the fermenter through the motor and reducer. The speed of the stirring device is controlled according to the different heat production at different stages of the fermentation process to avoid excessive stirring affecting the mycelial morphology of certain microorganisms. During the stirring process, heat transfer occurs between the fermentation substrate and the spiral heat exchange stirring tube 7, transferring the biological heat energy to the cold water in the spiral heat exchange stirring tube 7 to achieve the purpose of preheating.

[0027] The water inlet pipe 1, air inlet pipe 9, water outlet pipe 8, and air outlet pipe 10 are all made of rubber or plastic flexible tubing. The water inlet pipe 1 and air inlet pipe 9 are nested together, with the inner diameter of the water inlet pipe 1 being larger than the outer diameter of the air inlet pipe 9. The air inlet pipe 9 enters the water inlet pipe 1 from its oblique side and has a concentric air inlet port 9.1 at its other end. The water outlet pipe 8 and air outlet pipe 10 are also nested together, with the inner diameter of the water outlet pipe 8 being larger than the outer diameter of the air outlet pipe 10. The air outlet pipe 10 exits the water outlet pipe 8 from its oblique side.

[0028] The first air-water distributor 4 and the second air-water distributor 12 each include a central air inlet pipe and a water distribution chamber. The air inlet port 9.1 of the air inlet pipe 9 is connected to the central air inlet pipe, and the water inlet port 1.1 of the water inlet pipe 1 is connected to the water distribution chamber. The function of the water distribution chamber is to ensure that water is distributed according to a predetermined ratio and path into the spiral heat exchange stirring tube 7. The function of the central air inlet pipe is to regulate the gas flow rate or pressure so that the gas can be evenly distributed into the aeration branch pipes 6.

[0029] A transmission flange 3.1 is welded to the outside of the first gas-water distributor 4. The transmission flange 3.1 is bolted to the slewing bearing 3 on the lower side. The reducer transmission shaft meshes with the transmission gear 3.2 on the outside of the slewing bearing 3 through a gear, and drives the agitator main shaft 5 to rotate through the transmission flange 3.1. A base bearing 11 is welded to the second gas-water distributor 12. The base bearing 11 is welded to the bottom of the reactor to ensure the stability of the transmission of the agitator main shaft 5 and ensure the effective transmission of power.

[0030] The agitator main shaft 5 has a hollow structure. Its upper and lower ends are welded to the first air-water distributor 4 and the second air-water distributor 12, respectively. The central air inlet pipe in the first air-water distributor 4 at the upper end of the agitator main shaft 5 transmits gas to the aeration branch pipe 6 through the hollow structure of the agitator main shaft 5. The second air-water distributor 12 at the lower end of the agitator main shaft 5 is connected to the water outlet pipe 8 and the air outlet pipe 10 for drainage and exhaust.

[0031] There are at least four aeration branch pipes 6. Anti-clogging aeration heads are evenly distributed on the aeration branch pipes 6. Each aeration mixing pipe 6 is evenly distributed and welded to the main shaft 5 of the agitator at equal intervals and angles, and also serves to fix the spiral heat exchange mixing pipe 7.

[0032] The spiral heat exchange stirring tube 7 is a hollow, irregularly shaped spiral blade. The specially made irregularly shaped tube is bent into a spiral shape, and its two ends are respectively connected and fixed to the water distribution chamber in the air-water distributor at both ends of the stirrer main shaft 5. There are two spiral heat exchange stirring tubes 7.

[0033] In operation, this device delivers cold wastewater from the ecological toilet to the inlet pipe 1. The cold water enters the distribution chamber of the first air-water distributor 4 through the inlet pipe interface 1.1 and is then evenly distributed to the two spiral heat exchange stirring tubes 7. Air or oxygen can be blown into the air inlet pipe 9 as needed. The gas enters the central air inlet pipe of the first air-water distributor 4 through the air inlet pipe interface 9.1 and is then distributed to the aeration branch pipes 6. While the drive device moves the entire stirring unit within the fermentation tank, it simultaneously agitates, oxygenates, and exchanges heat on the biological fermentation substrate. The preheated wastewater enters the distribution chamber of the second air-water distributor 12 and is discharged through the outlet pipe 8. Excess gas is discharged through the air outlet pipe 10.

[0034] This device, together with the matching fermenter, forms a sealed container. An automatic exhaust valve is installed on the outer wall of the fermenter, and a safety exhaust valve is installed on the exhaust section of the exhaust pipe 10. A pressure sensor detects the gas pressure inside the fermenter. During normal operation, air or oxygen is forced into the inlet pipe 9 and introduced into the fermenter for stirring and reaction. Exhaust gas is discharged through the automatic exhaust valve on the tank body. When the automatic exhaust valve malfunctions and the fermenter pressure becomes too high, the safety valve connected to the exhaust pipe 10 automatically opens to release pressure and exhaust gas. After the above heat exchange process, the cold wastewater is discharged to the reuse pipeline by gravity flow, with the flow rate regulated by controlling the opening of the outlet valve connected to the outlet pipe 8.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heat recovery and utilization device for a fermentation tank in an ecological toilet, characterized in that, It includes a drive device (2), a first air-water distributor (4) and a stirring device. The stirring device includes a stirrer main shaft (5), an aeration branch pipe (6) and a spiral heat exchange stirring tube (7) for heat exchange. The drive device (2) is connected to the stirrer main shaft (5), and the first air-water distributor (4) is connected to the stirrer main shaft (5) and the spiral heat exchange stirring tube (7) respectively.

2. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, It also includes a water inlet pipe (1), an air inlet pipe (9), a water outlet pipe (8), and an air outlet pipe (10), all of which are made of rubber or plastic hoses.

3. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 2, characterized in that, The water inlet pipe (1) and the air inlet pipe (9) are nested. The inner diameter of the water inlet pipe (1) is larger than the outer diameter of the air inlet pipe (9). The air inlet pipe (9) is inserted into the water inlet pipe (1) from the oblique side and has an air inlet interface (9.1) with concentric inner and outer sides at the other end.

4. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, The drive device (2) includes a motor and a reducer. The output shaft of the motor is connected to the reducer, and the output shaft of the reducer is connected to the top of the agitator main shaft (5) through a slewing bearing (3).

5. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, The first air-water distributor (4) includes a central air inlet pipe and a water distribution chamber. One end of the central air inlet pipe is connected to the main shaft (5) of the stirrer, and the other end is connected to the air inlet pipe (9). One end of the water distribution chamber is connected to the spiral heat exchange stirring tube (7), and the other end is connected to the water inlet pipe (1).

6. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, The main shaft (5) of the agitator has a hollow structure, the number of aeration branch pipes (6) is at least four, and the number of spiral heat exchange stirring pipes (7) is two.

7. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 6, characterized in that, Anti-clogging aeration heads are evenly arranged on the aeration branch pipe (6), and each aeration branch pipe (6) is fixedly connected to the main shaft (5) of the agitator.

8. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 7, characterized in that, The spiral heat exchange stirring tube (7) is fixedly connected to the aeration branch tube (6).

9. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, The spiral heat exchange stirring tube (7) is shaped like a hollow, irregularly shaped spiral blade.

10. The heat recovery and utilization device in the fermentation tank of the ecological toilet according to claim 1, characterized in that, It also includes a base bearing (11) and a second air-water distributor (12).

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