CN206706104U - A kind of solar-energy methane pit - Google Patents

Abstract

A solar biogas digester, including an air outlet, an air storage tank, an exhaust pipe, a tank wall, a cover plate, a convex lens, a feed inlet, a controller, an outlet pipe, a solar water heater, a water pump, an inlet pipe, a skirt, a rotating shaft, a motor, Temperature sensor, impeller and fermentation tank; there is a cover plate on the top of the fermentation tank, and a convex lens is installed inside the cover plate. The temperature sensor is electrically connected to the controller. The stirring effect of the impeller in the utility model enables the anaerobic bacteria to fully contact the fermentation raw materials. At the same time, the upper layer of the fermentation raw material is not easy to crust, and the small biogas bubbles generated in the middle and lower layers can be collected into large ones. Bubbles rise to the upper part of the fermentation tank, which facilitates the collection of biogas; the convex lens can accumulate sunlight to heat the interior of the fermentation tank, and the water inlet pipe is located in the tank wall, which can heat the fermentation raw materials, promote the fermentation of raw materials, and generate biogas.

Description

A solar digester

technical field

The utility model relates to the technical field of biogas production equipment, in particular to a solar biogas pool.

Background technique

Biogas is a combustible gas produced by the fermentation of microorganisms under anaerobic conditions. Since this gas was first discovered in swamps, it is called biogas; various organic substances such as human and animal manure, straw, sewage, etc. In a closed biogas digester, it is fermented under anaerobic conditions, that is, it is decomposed and transformed by a wide variety of biogas fermentation microorganisms, thereby producing biogas; biogas is a mixture of various gases, generally containing 50-70% of methane, and the rest is carbon dioxide and a small amount. Nitrogen, hydrogen and hydrogen sulfide, etc., whose characteristics are similar to natural gas; besides being directly burned for cooking, drying agricultural and sideline products, heating, lighting and gas welding, etc., biogas can also be used as fuel for internal combustion engines and for the production of methanol, formalin, Carbon tetrachloride and other chemical raw materials. The feed liquid and sediment discharged from the biogas plant after fermentation contain rich nutrients and can be used as fertilizer and feed. Biogas is some organic substances. Under certain temperature, humidity and acidity conditions, the air is isolated and the flammable gas is produced by the action of microorganisms. It contains a small amount of hydrogen sulfide, so it has a slight odor. Fermentation is a complex biochemical change. There are many microbes involved.

The characteristics of renewable, clean and environmental protection make biogas have entered thousands of households. Many rural households have built biogas digesters. The fermentation raw materials and fermentation bacteria in traditional biogas digesters are unevenly distributed, and anaerobic bacteria cannot fully contact fermentation raw materials. Raw materials The easy crusting of the upper layer will prevent the rise of the biogas produced in the middle and lower layers, and the temperature in the fermentation tank is not uniform, which is not conducive to sufficient fermentation to generate biogas.

Utility model content

The purpose of this utility model is to provide a solar biogas digester to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A solar biogas digester, including an air outlet, an air storage tank, an exhaust pipe, a tank wall, a cover plate, a convex lens, a feed inlet, a controller, an outlet pipe, a solar water heater, a water pump, an inlet pipe, a skirt, a rotating shaft, a motor, Temperature sensor, sealing ring, gate valve, thermal insulation cotton, impeller and fermentation tank; the upper part of the gas storage tank is provided with an air outlet, the exhaust pipe is connected with the fermentation tank, and extends into the gas storage tank from the lower part of the gas storage tank, and the exhaust pipe is provided with There is a gate valve, a skirt seat at the bottom of the fermentation tank, a cover plate on the top of the fermentation tank, a convex lens installed inside the cover plate, a feed inlet on the fermentation tank, a rotating shaft passing through the tank wall at the bottom of the fermentation tank and extending into the inside of the fermentation tank. The impeller is fixed, and there is a sealing ring between the rotating shaft and the tank wall; the rotating shaft is driven by the motor to rotate, the water inlet pipe is drawn from the solar water heater, and extends into the inside of the tank wall, the outlet pipe is connected to the end of the water inlet pipe, and the outlet pipe is connected to the solar water heater connected; a water pump is provided on the water inlet pipe, and the water pump is electrically connected to the controller; a temperature sensor is provided on the tank wall, and the temperature sensor is electrically connected to the controller.

As an improvement of the utility model: the number of the convex lenses is four.

As an improved solution of the utility model: the cover plate is made of transparent tempered glass.

As an improved solution of the present utility model: the number of the impellers is two.

As an improved solution of the utility model: the motor is provided with a speed regulating device.

As an improved solution of the utility model: the fermentation tank has a spherical structure.

Compared with the prior art, the beneficial effects of the utility model are:

In the utility model, a motor is installed at the bottom of the fermentation tank, the motor drives the rotating shaft to rotate, and the impeller stirs the fermentation raw materials, so that the anaerobic bacteria can fully contact the fermentation raw materials, and at the same time, the upper layer of the fermentation raw materials is not easy to crust, and the small biogas bubbles generated in the middle and lower layers can be collected. The large bubbles rise to the upper part of the fermentation tank, which is convenient for biogas collection; the convex lens can accumulate sunlight to heat the inside of the fermentation tank, and the solar water heater heats the water through solar energy and enters the water inlet pipe, which is located in the tank wall, which can heat the fermentation tank. The raw material is heated to promote the fermentation of the raw material and generate biogas.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the impeller in the utility model.

In the figure: 1-air outlet, 2-air storage tank, 3-exhaust pipe, 4-tank wall, 5-cover plate, 6-convex lens, 7-feeding port, 8-controller, 9-outlet pipe, 10 -solar water heater, 11-water pump, 12-inlet pipe, 13-skirt, 14-rotating shaft, 15-motor, 16-temperature sensor, 17-sealing ring, 18-gate valve, 20-insulation cotton, 21-impeller, 22 - Fermentation tank.

detailed description

Below in conjunction with specific embodiment, the technical scheme of this patent is described in further detail:

Please refer to Figure 1-2, a solar biogas digester, including an air outlet 1, an air storage tank 2, an exhaust pipe 3, a tank wall 4, a cover plate 5, a convex lens 6, a material inlet 7, a controller 8, and a water outlet pipe 9 , solar water heater 10, water pump 11, water inlet pipe 12, skirt seat 13, rotating shaft 14, motor 15, temperature sensor 16, sealing ring 17, gate valve 18, ring pipe 19, insulation cotton 20, impeller 21 and fermentation tank 22; The gas outlet 1 is arranged on the upper part of the gas cylinder 2, the exhaust pipe 3 communicates with the fermentation tank 22, and extends from the lower part of the gas storage tank 2 into the gas storage tank 2, the exhaust pipe 3 is provided with a gate valve 18, and the bottom of the fermentation tank 22 is provided with a skirt Seat 13, a cover plate 5 is provided on the top of the fermentation tank 22, a convex lens 6 is installed in the cover plate 5, a feed port 7 is provided on the fermentation tank 22, and the rotating shaft 14 passes through the tank wall 4 at the bottom of the fermentation tank 22 and extends into the inside of the fermentation tank 22 , the impeller 21 is fixed on the rotating shaft 14, and the sealing ring 17 is arranged between the rotating shaft 14 and the tank wall 4; The water pipe 9 is connected to the end of the water inlet pipe 12, and the water outlet pipe 9 is connected to the solar water heater 10; the water inlet pipe 12 is provided with a water pump 11, and the water pump 11 is electrically connected to the controller 8, and the tank wall 4 is provided with a temperature sensor 16, the temperature The sensor 16 is electrically connected to the controller 8 .

Working principle and using method of the present utility model are:

The fermentation raw material falls into the fermentation tank 22 from the feed port 7 for fermentation, the starter motor 15 drives the rotating shaft 14 to rotate, the impeller 21 rotates with the rotating shaft and stirs the fermentation raw material in the fermentation tank 22, so that the fermentation raw material and anaerobic bacteria can fully At the same time, the biogas produced at the bottom of the fermentation tank 22 can be quickly collected and rise to the upper part of the fermentation tank 22; the sunlight is irradiated on the cover plate 5, and the fermentation raw materials are heated through the convex lens 6 or irradiated into the fermentation tank 22; the solar water heater 10 By absorbing solar energy, the internal water is heated, hot water enters the water inlet pipe 12, and the water inlet pipe 12 extends into the tank wall 4, and through heat conduction, the water inlet pipe 12 heats the fermentation tank 22; the controller 8 receives the temperature The internal temperature signal of the fermentation tank 22 collected by the sensor 16 is used to control the rotation speed regulating device of the water pump 11, so that the rotation speed of the water pump 11 is adjusted, and then the water intake of the water inlet pipe 12 is changed, and the temperature of the fermentation tank 22 is adjusted. The water inlet pipe 12 flows into the water outlet pipe 9 and returns to the solar water heater 10 for circulation and heating; the generated biogas is collected in the upper space of the fermentation tank 22, the gate valve 18 is opened, and the biogas enters the gas storage tank 2 for storage.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A solar biogas digester, comprising an air outlet (1), an air storage tank (2), an exhaust pipe (3), a tank wall (4), a cover plate (5), a convex lens (6), a feed port (7) ), controller (8), outlet pipe (9), solar water heater (10), water pump (11), water inlet pipe (12), skirt seat (13), rotating shaft (14), motor (15), temperature sensor (16), sealing ring (17), gate valve (18), thermal insulation cotton (20), impeller (21) and fermentation tank (22); it is characterized in that, the upper part of the air storage tank (2) is provided with an air outlet (1 ), the exhaust pipe (3) communicates with the fermentation tank (22), and stretches into the air storage tank (2) from the bottom of the gas storage tank (2), the exhaust pipe (3) is provided with a gate valve (18), and the fermentation tank (22) The bottom is provided with a skirt (13), the top of the fermentation tank (22) is provided with a cover plate (5), and a convex lens (6) is installed in the cover plate (5), and a feed inlet is provided on the fermentation tank (22) (7), rotating shaft (14) passes fermenting tank (22) bottom tank wall (4) and stretches into fermenting tank (22) inside, is fixed with impeller (21) on the rotating shaft (14), and rotating shaft (14) and tank wall ( 4) There is a sealing ring (17) between them; the rotating shaft (14) is driven to rotate by the motor (15), the water inlet pipe (12) is drawn from the solar water heater (10), and extends into the inside of the tank wall (4), and the water outlet pipe (9) is connected with the end of water inlet pipe (12), and water outlet pipe (9) is connected with solar water heater (10); Water inlet pipe (12) is provided with water pump (11), and water pump (11) and controller (8) The tank wall (4) is provided with a temperature sensor (16), and the temperature sensor (16) is electrically connected with the controller (8). 2. The solar biogas digester according to claim 1, characterized in that the number of said convex lenses (6) is four. 3. The solar biogas digester according to claim 1, characterized in that, the cover plate (5) is made of transparent tempered glass. 4. The solar biogas digester according to claim 1, characterized in that, the number of the impellers (21) is two. 5. The solar biogas digester according to claim 1, characterized in that, the motor (15) is provided with a rotational speed regulating device. 6. The solar biogas digester according to claim 1, characterized in that, the fermentation tank (22) is a spherical structure.