Fermentation equipment for producing biological organic fertilizer

Abstract

The invention relates to the technical field of organic fertilizer fermentation equipment, in particular to fermentation equipment for biological organic fertilizer production, which comprises a fermentation tank and a gas-heat circulation comprehensive system. According to the system, solar energy is focused on a heat collection cover in a gas heat collection cavity through a condensing lens, and heat conduction oil in a hot oil tank is heated through a heat conduction heat collection device so as to heat a fermentation tank; meanwhile, fresh air heated by the heat collecting cavity is mixed with waste gas subjected to dust removal and recovery to form oxygen-enriched hot air for fermentation aeration. The equipment realizes efficient utilization of solar energy and waste heat recovery of waste gas, guarantees heat energy supply in cloudy and rainy days with the assistance of an electric heating coil, regulates and controls oxygen concentration through an oxygen sensor and a flow valve, and ensures safe operation through an air pressure valve. According to the device, the hot oil circulating system and the aeration circulating system are adjusted by controlling the total amount and the oxygen content of fresh air entering the gas heating cavity. And the method is energy-saving and consumption-reducing, high in fermentation efficiency, stable in operation and suitable for resourceful treatment of organic wastes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of organic fertilizer fermentation equipment, in particular to a fermentation equipment for biological organic fertilizer production. BACKGROUND

[0002] The information disclosed in the background of the present application is only intended to increase the understanding of the overall background of the present application, and should not be necessarily regarded as acknowledging or implicitly suggesting that the information constitutes prior art known to those skilled in the art.

[0003] In the production process of biological organic fertilizer, fermentation is a key link, which requires appropriate temperature and oxygen conditions. The traditional heating method of fermentation equipment mainly uses electric heating or fuel heating, which consumes a lot of energy and has high cost. At the same time, the gas circulation and oxygen supplement in the fermentation process are not reasonable enough, which affects the fermentation efficiency and fertilizer quality.

[0004] In the prior art, such as Chinese patent CN2615133Y, a comprehensive treatment device for manufacturing biological fermentation active organic fertilizer by using organic waste is disclosed, which realizes dehydration and fermentation by using solar energy and material self-fermentation heat. The above technology does not recycle the waste heat generated by fermentation, and the heat loss rate of the plastic film greenhouse is high, so it cannot guarantee the stable and efficient fermentation of biological organic fertilizer.

[0005] Therefore, it is of great significance to develop an energy-saving, environmentally friendly and efficient fermentation equipment for biological organic fertilizer production. SUMMARY

[0006] In view of the problems existing in the prior art, the purpose of the present application is to provide a fermentation equipment for biological organic fertilizer production, which aims to solve the problems of large energy consumption, high heat loss rate, unstable fermentation efficiency and fertilizer quality, etc. of traditional organic fertilizer fermentation equipment.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme: A fermentation equipment for biological organic fertilizer production, comprising a fermentation tank and a gas-heat circulation comprehensive system, the fermentation tank is provided with a heating coil and an aeration device; characterized in that: The gas-heat circulation comprehensive system comprises a light heating device, a hot oil circulation system and an aeration circulation system, the light heating device is used for converting solar energy into heat energy to provide heat for the hot oil circulation system and the aeration circulation system; The hot oil circulation system comprises a hot oil tank for providing circulating hot oil for the heating coil; The light heat device comprises a condensing lens, a gas heat collection cavity is arranged below the condensing lens, circulating gas and fresh air are arranged in the gas heat collection cavity, the fresh air is used for balancing heat and supplementing oxygen content to meet the needs of bio-organic fertilizer production in the fermentation tank, and a heat conduction heat collection device is arranged in the gas heat collection cavity. The heat collection end of the heat conduction heat collection device is arranged in the gas heat collection cavity and is used for collecting heat generated by the condensing lens, and the heating end of the heat conduction heat collection device is arranged in the hot oil tank and is used for heating circulating hot oil. The heating cavity is in communication with the heat collection cavity, a heat conduction core is arranged in the heating cavity, and one end of the heat conduction core is connected with the heat collection end. The aeration circulation system comprises a gas dust removal device, which is used for dust removal of the circulating gas; the total amount and oxygen content of the fresh air entering the gas heat collection cavity are controlled to realize adjustment of the hot oil circulation system and the aeration circulation system.

[0008] Preferably, the condensing lens is semispherical, the hot oil tank is arranged below the condensing lens to form a semispherical gas heat collection cavity, and the heat conduction heat collection device is fixedly installed at the center of the upper end cover of the hot oil tank.

[0009] Preferably, the condensing lens is provided with a fresh air inlet and an air outlet, the fresh air inlet is connected with a fresh air pipe, and the air outlet is in communication with the air inlet of the aeration device through an air outlet pipe. The fermentation tank is provided with a waste gas outlet, the waste gas outlet is in communication with the air inlet end of the gas dust removal device through a waste gas pipe, the air outlet end of the gas dust removal device is in communication with the gas heat collection cavity through a gas return pipe, and the waste gas heat is recycled.

[0010] Preferably, the hot oil tank is provided with an oil inlet and an oil outlet, the oil outlet is in communication with the inlet of the heating coil through an oil outlet pipe, the outlet of the heating coil is in communication with the oil inlet through an oil return pipe, and the hot oil is circulated by a circulating pump.

[0011] Preferably, the condensing lens is further provided with an air pressure valve. The hot oil tank is further provided with an electric heating coil near the bottom, which is used for heat supplement of the distal end of the hot oil tank far from the heating end.

[0012] Preferably, the heat collection end is provided with a heat collection cover, the outer side of the heat collection cover in the gas heat collection cavity is provided with a heat absorption coating, and the inner side of the heat collection cover is connected with the heat conduction core through a plurality of heat conduction sheets.

[0013] Preferably, the condensing lens is a Nephelios lens, the heat collection cover is semispherical, and a plurality of air permeable holes for communicating the heating cavity and the gas heat collection cavity are formed in the heat collection cover.

[0014] The present application at least includes the following beneficial effects: In the present application, the hot oil circulation system exchanges heat directly with the fermentation material through the heating coil, and cooperates with the hot oil circulation driven by the circulating pump to ensure uniform distribution of temperature in the fermentation tank. The electric heating coil in the hot oil tank can automatically supplement heat to maintain the oil temperature at the optimal fermentation temperature. The oxygen-rich hot gas heated in the gas heat collection chamber is introduced into the material through the aeration device to further assist in maintaining the temperature in the tank and avoid local temperature fluctuations.

[0015] In the present application, by arranging an oxygen content sensor in the gas heat collection chamber, the oxygen concentration is monitored in real time. At the same time, by adjusting the flow control valve on the fresh air pipe, the mixing ratio of fresh air and circulating exhaust gas is accurately adjusted to stabilize the oxygen content in the fermentation tank within the optimal activity range of microorganisms. Adequate and stable oxygen supply can promote the reproduction of aerobic microorganisms, accelerate the decomposition of organic matter, and improve the fermentation efficiency.

[0016] In the present application, solar energy is used to heat both the hot oil and the circulating gas through the light heating device, reducing the dependence on traditional electric heating or fuel heating. The exhaust gas discharged from the fermentation tank is purified through the gas dust removal device and then returned to the gas heat collection chamber through the gas return pipe. The waste heat in the exhaust gas is reused to heat the gas in the heat collection chamber, avoiding the waste of heat caused by direct discharge. This recycling design turns the waste heat generated during the fermentation process into a valuable resource, further reducing the demand for external energy input, reducing the amount of fresh air introduced and heat waste, forming a closed loop of fermentation, exhaust gas purification and waste heat recycling, and reducing the resource consumption of the production process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall system structure of the present application; Fig. 2 It is a schematic diagram of the structure of the light heating device and the hot oil tank; Fig. 3 It is a schematic diagram of the internal structure of the light heating device.

[0018] The reference signs are as follows: 100, fermentation tank; 110, aeration device; 111, gas outlet pipe; 112, exhaust gas pipe; 113, gas return pipe; 120, heating coil; 121, oil outlet pipe; 122, oil return pipe; 200, hot oil tank; 210, oil outlet; 220, oil inlet; 300, condensing lens; 310, gas heat collection chamber; 320, fresh air pipe; 330, fresh air inlet; 340, gas outlet; 350, gas pressure valve; 400, heat conduction heat collection device; 410, heat collection end; 411, heat absorption coating; 412, air permeable hole; 420, heating end; 421, heating chamber; 430, electric heating coil; 440, heat conduction core; 441, heat conduction sheet; 500, gas dust removal device. DETAILED DESCRIPTION

[0019] The application will be further described in connection with the specific embodiments and drawings.

[0020] Figs. 1 to 3 The fermentation equipment for bio-organic fertilizer production comprises a fermentation tank 100 and a gas-heat circulation comprehensive system, the fermentation tank 100 is internally provided with a heating coil 120 and an aeration device 110, the aeration device 110 can be an aeration plate or aerator by using the existing technology. The gas-heat circulation comprehensive system comprises a light heat device, a hot oil circulation system and an aeration circulation system, the light heat device is used for converting solar energy into heat energy to provide heat for the hot oil circulation system and the aeration circulation system. The hot oil circulation system comprises a hot oil tank 200 for providing circulating hot oil for the heating coil 120.

[0021] The light heat device comprises a condensing lens 300, which is used for converting solar energy into heat energy, and a common convex lens can also achieve this effect, a gas heat collection cavity 310 is arranged below the condensing lens 300, circulating gas and fresh air are arranged in the gas heat collection cavity 310, the fresh air is used for balancing heat and supplementing oxygen content to meet the needs of bio-organic fertilizer production in the fermentation tank 100, an oxygen content sensor for monitoring the oxygen content is arranged in the gas heat collection cavity 310, and a heat conduction heat collection device 400 is arranged in the gas heat collection cavity 310.

[0022] The heat collection end 410 of the heat conduction heat collection device 400 is arranged in the gas heat collection cavity 310 and is used for collecting heat generated by the condensing lens 300, the heating end 420 of the heat conduction heat collection device 400 is arranged in the hot oil tank 200 and is used for heating circulating hot oil, a heating cavity in communication with the heat collection cavity is arranged in the heating end 420, a heat conduction core 440 is arranged in the heating cavity, one end of the heat conduction core 440 is connected with the heat collection end 410 and is used for transmitting heat absorbed by the heat collection end 410 to the circulating hot oil through the heat conduction core 440, gas medium in the heating cavity and the shell of the heating end 420, a large amount of hot air can be generated in the heating cavity and is used for supplementing heat loss of the circulating gas, in addition, the heating cavity is also used for increasing the heat transfer area, thereby improving the heat conduction efficiency of the heat conduction heat collection device 400 and the heating efficiency of the circulating hot oil, and further providing a more stable temperature environment for bio-organic fertilizer production in the fermentation tank 100.

[0023] The aeration circulation system comprises a gas dust removal device 500 and is used for removing dust from the circulating gas, the total amount and oxygen content of the fresh air entering the gas heat collection cavity 310 are controlled to realize the adjustment of the hot oil circulation system and the aeration circulation system.

[0024] The specific structure of the condenser lens 300 is preferably hemispherical, the hot oil tank 200 is arranged below the condenser lens 300, and a hemispherical gas heat collection cavity 310 is formed; the heat conduction heat collection device 400 is fixedly installed at the center of the upper end cover of the hot oil tank 200, and the condensing point is aligned with the heat conduction heat collection device 400.

[0025] The condenser lens 300 is provided with a fresh air inlet 330 and an air outlet 340, the fresh air inlet 330 is connected with a fresh air pipe 320, and the air outlet 340 is communicated with the air inlet of the aeration device 110 through an air outlet pipe 111; the fermentation tank 100 is provided with a waste gas outlet, the waste gas outlet is communicated with the air inlet end of the gas dust removal device 500 through a waste gas pipe 112, and the air outlet end of the gas dust removal device 500 is communicated with the gas heat collection cavity 310 through a gas return pipe 113, so that the waste gas heat is recycled. The gas dust removal device 500 can be a bag-type dust collector, which has high filtration efficiency and can effectively remove dust and impurities in the waste gas discharged from the fermentation tank 100.

[0026] The hot oil tank 200 is provided with an oil inlet 220 and an oil outlet 210, the oil outlet 210 is communicated with the inlet of the heating coil 120 through an oil outlet pipe 121, the outlet of the heating coil 120 is communicated with the oil inlet 220 through an oil return pipe 122, and the heat oil circulation is realized by the power provided by a circulating pump.

[0027] The condenser lens 300 is also provided with a gas pressure valve 350 for pressure regulation and explosion prevention, the gas pressure valve 350 can be a spring safety valve, and the opening pressure is set, so that when the gas pressure in the gas heat collection cavity 310 is too high, the gas is automatically discharged to reduce the pressure, and the safe operation of the equipment is ensured.

[0028] The electric heating coil 120 is also arranged in the hot oil tank 200 close to the bottom, for supplementing the heat of the hot oil tank 200 close to the heat end 420. In addition, when the temperature in the hot oil tank 200 is low due to rainy days or insufficient light, the electric heating coil 120 is started to supplement heat and ensure the stability of the temperature of the hot oil.

[0029] The heat collection cover is provided with a heat absorption coating 411 on the outer side in the gas heat collection cavity 310, for improving the heat absorption efficiency, and the inner side of the heat collection cover is connected with the heat conduction core 440 through a plurality of heat conduction sheets 441, for further improving the heat conduction efficiency. The heat conduction sheets 441 and the heat conduction core 440 are made of oxygen-free copper material, have high heat conductivity, and can quickly transfer the heat absorbed by the heat collection cover to the heating end 420.

[0030] The light collecting lens 300 is a Nephelion lens for improving solar energy conversion efficiency, the heat collecting cover is a semi-spherical shape for increasing heat collecting area, and a plurality of air permeable holes 412 are formed on the heat collecting cover for connecting the heating cavity and the gas heat collecting cavity 310.

[0031] The working process and principle of the device are as follows: Heat collection and transfer: after the device is started, the light collecting lens 300 focuses sunlight on the heat collecting cover in the gas heat collecting cavity 310, the heat absorbing coating 411 on the outer side of the heat collecting cover absorbs solar energy and converts it into heat energy, and the heat is transferred to the heat conducting core 440 through the heat conducting sheet 441. The heat conducting core 440 transfers heat to the heating end 420, which on one hand heats the heat conducting oil in the heat oil tank 200, and on the other hand heats the gas in the gas heat collecting cavity 310.

[0032] Heat oil circulation heating: after the heat conducting oil in the heat oil tank 200 is heated, it enters the heating coil 120 in the fermentation tank 100 through the oil outlet pipe 121 under the action of the circulating pump, exchanges heat with the fermentation material, and provides suitable temperature conditions for the fermentation process. The heat conducting oil after heat exchange returns to the heat oil tank 200 through the oil return pipe 122, completing the heat oil circulation. When the oil temperature in the heat oil tank 200 is insufficient, the electric heating coil 120 is automatically started to supplement heat, ensuring that the temperature of the heat conducting oil is stable at the required temperature for fermentation, specifically 50-60℃.

[0033] Aeration and gas circulation: the exhaust gas in the fermentation tank 100 enters the exhaust gas outlet and then the exhaust gas pipe 112, removes dust and impurities through the gas dust removal device 500, and then enters the gas heat collecting cavity 310 through the gas return pipe 113. The waste heat in the exhaust gas is reused to heat the gas in the gas heat collecting cavity 310. At the same time, fresh air is introduced into the gas heat collecting cavity 310 through the fresh air pipe 320, and the fresh air and the circulating exhaust gas are mixed in the gas heat collecting cavity 310, and after heating, form oxygen-enriched hot gas, which enters the aeration device 110 through the gas outlet pipe 111 and is uniformly introduced into the fermentation material, providing sufficient oxygen for microbial fermentation and maintaining the temperature stability in the fermentation tank 100.

[0034] By controlling the flow control valve and oxygen content sensor on the fresh air pipe 320, the total amount and oxygen content of the fresh air entering the gas heat collecting cavity 310 can be accurately adjusted, so that the oxygen content in the fermentation tank 100 is maintained at 5%-8% suitable for the production of biological organic fertilizer, and the temperature is maintained at 50-60℃, ensuring that the microorganisms are in the best fermentation environment, improving the fermentation efficiency and fertilizer quality. When the gas pressure in the gas heat collecting cavity 310 exceeds the set value, the gas pressure valve 350 is automatically opened to release the gas, ensuring the safe operation of the device.

[0035] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

[0036] The terms "upper," "lower," "inner," "outer," and the like, if used, are used for ease of description of the positions of one element or location with respect to another element(s) or location(s) as drawn or described herein, and are not necessarily limiting. It will be appreciated that references to details that are drawn or described herein are intended to encompass equivalents unless otherwise noted. It should be understood that the use of "including," "comprising," "having," "containing," or "encompassing" and variations thereof herein, is intended to be broad and encompass the options listed thereafter, and equivalents thereof, unless otherwise noted. It is appreciated that certain features of the application, which alone or in various combinations, can be used to achieve the results according to the principles of the application. Thus, the application is not limited to those embodiments and arrangements described herein, but rather, the objective is to cover all modifications and alternatives falling within the scope of the claims.

[0037] The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fermentation device for producing bio-organic fertilizer, comprising a fermentation tank and a gas-heat circulation integrated system, wherein the fermentation tank is provided with a heating coil and an aeration device; characterized in that: The integrated gas-heat cycle system includes a photothermal device, a hot oil circulation system, and an aeration circulation system. The photothermal device is used to convert solar energy into thermal energy to provide heat for the hot oil circulation system and the aeration circulation system. The hot oil circulation system includes a hot oil tank that provides circulating hot oil to the heating coil; The photothermal device includes a focusing lens, a gas heat collection chamber is provided below the focusing lens, and circulating gas and fresh air are provided in the gas heat collection chamber. The fresh air is used to balance heat and supplement oxygen content to meet the production requirements of biological organic fertilizer in the fermentation tank. A heat conduction heat collection device is provided in the gas heat collection chamber; The heat collection end of the heat conduction heat collection device is placed in the gas heat collection chamber to collect the heat generated by the focusing lens, and the heating end of the heat conduction heat collection device is placed in the hot oil tank to heat the circulating hot oil; The heating end is provided with a heating cavity communicated with the heat collection cavity, the heating cavity is provided with a heat conducting core, and one end of the heat conducting core is connected to the heat collection end; The aeration circulation system includes a gas dust removal device for removing dust from the circulating gas; The hot oil circulation system and the aeration circulation system are regulated by controlling the total amount and oxygen content of the fresh air entering the gas heat collection chamber.

2. The bio-organic fertilizer production fermentation equipment according to claim 1, wherein: The focusing lens is hemispherical, and the hot oil tank is arranged below the focusing lens to form a hemispherical gas heat collection cavity; the heat conduction heat collection device is installed and fixed at the center of the upper end cover of the hot oil tank.

3. The bio-organic fertilizer production fermentation equipment according to claim 1, wherein: The condenser lens is provided with a fresh air inlet and an air outlet, the fresh air inlet is connected to a fresh air pipe, and the air outlet is connected to the air inlet of the aeration device through the air outlet pipe; The fermentation tank is provided with a waste gas outlet, which is connected to the air inlet of the gas dust removal device through a waste gas pipe, and the air outlet of the gas dust removal device is connected to the gas heat collection chamber through a return air pipe, thereby realizing the recycling of waste gas heat.

4. The bio-organic fertilizer production fermentation equipment according to claim 1, wherein: The hot oil tank is provided with an oil inlet and an oil outlet. The oil outlet is connected to the inlet of the heating coil through an oil outlet pipe, and the outlet of the heating coil is connected to the oil inlet through an oil return pipe. The hot oil circulation is realized by providing power through a circulation pump.

5. The bio-organic fertilizer production fermentation equipment according to claim 1, characterized in that: The condenser lens is also provided with an air pressure valve; An electric heating coil is also provided near the bottom of the hot oil tank for supplementing heat near the heating end and the heat conducting end of the hot oil tank.

6. The bio-organic fertilizer production fermentation equipment according to claim 1, characterized in that: The heat collection end is provided with a heat collection cover, the outer side of the heat collection cover in the gas heat collection cavity is provided with a heat absorption coating, and the inner side of the heat collection cover is connected to the heat conducting core through a plurality of heat conducting sheets.

7. The bio-organic fertilizer production fermentation equipment according to claim 6, characterized in that: The focusing lens is a Nephilim lens, the heat collection cover is hemispherical, and the heat collection cover is provided with a plurality of air holes for connecting the heating chamber and the gas heat collection chamber.

Images