Double-helical-ribbon mixer

Abstract

The utility model relates to a double-helical-ribbon mixer which comprises a first stirring and conveying device, a second stirring and conveying device, a third stirring and conveying device and a fourth stirring and conveying device, the first stirring and conveying device comprises a first screw rod, a first driving motor and a first shell, the first screw rod is coaxially arranged in the first shell, a first feeding port is formed in the end, close to the first driving motor, of the first shell, and a first discharging port is formed in the other end of the first shell; one end of a main shaft of the first driving motor penetrates through the closed variable-frequency feeder and then is fixedly connected with the first screw rod, and the two ends of the first shell are in a sealed state respectively; the second stirring and conveying device is a double-helical-ribbon mixer body, a second feeding port and a second discharging port of the second stirring and conveying device are located at the two ends of the second stirring and conveying device respectively, and the material conveying direction of the second stirring and conveying device is opposite to the material conveying direction of the first stirring and conveying device; and a first discharge hole of the first stirring and conveying device is hermetically communicated with a second feed hole in the upper part of the second stirring and conveying device.

Description

Technical Field

[0001] The utility model relates to a mixing fermentation device, in particular to a double-ribbon mixer. Background Art

[0002] With the development of industry and agriculture and the improvement of human living standards, there are more and more organic wastes such as livestock and poultry manure, human excrement, domestic garbage rich in organic matter, and crop straw. Composting has become one of the main methods for treating organic wastes. Composting is a biochemical process that uses microorganisms widely present in nature to promote the transformation of biodegradable organic matter into stable humus through artificial regulation and control.

[0003] According to the differences in the environment for the growth of composting microorganisms, composting can be divided into aerobic composting and anaerobic composting. Aerobic composting is to mix the organic materials to be composted with fillers in a certain proportion, compost under suitable conditions, so that the microorganisms can multiply and degrade the organic matter, thereby stabilizing the organic solid waste; anaerobic composting is the process of anaerobic microorganisms decomposing and transforming the organic matter in the waste under anaerobic conditions. Since anaerobic microorganisms decompose organic matter slowly, have low treatment efficiency, are prone to produce odor, and the process conditions are difficult to control, they are less used; in aerobic composting, the composting temperature is high, the composting microorganisms are highly active, the organic matter decomposes quickly, and the degradation is more thorough. In addition, during the composting process, the high temperature sterilization can kill pathogens, parasites, eggs, etc. in the organic waste, thereby improving the performance of the compost.

[0004] In the above-mentioned aerobic fermentation and anaerobic fermentation process, a double-screw ribbon mixer is often used to stir evenly before proceeding to the next step. In the prior art, a double-layer spiral blade is arranged on the transmission main shaft of the horizontal double-screw ribbon mixer. The inner spiral conveys the material to the outside, and the outer spiral gathers the material to the inside. Under the convection motion of the double-layer spiral ribbon, the material forms a low-power and high-efficiency mixing ring.

[0005] However, the existing double-screw ribbon mixer is not suitable for fermentation. The material needs to be mixed with the bacterial solution outside and then added into the double-screw ribbon mixer for uniform mixing, which affects the work efficiency. Utility Model Content

[0006] The main purpose of the utility model is to provide a double-ribbon mixer, which is convenient to use in aerobic fermentation and anaerobic fermentation and improves work efficiency.

[0007] In order to achieve the above object, the utility model provides a double-ribbon mixer, comprising:

[0008] a first stirring and conveying device, wherein the first feeding port of the first stirring and conveying device can be used to add impurity-removed materials, strains and liquids, and the first stirring and conveying device comprises a first screw rod, a first drive motor and a first housing, wherein the first screw rod is coaxially arranged inside the first housing, an end of the first housing close to the first drive motor is provided with a first feeding port, and the other end of the first housing is provided with a first discharge port, one end of the main shaft of the first drive motor passes through the closed frequency conversion feeder and is fixedly connected to the first screw rod, and both ends of the first housing are respectively in a sealed state;

[0009] The second stirring and conveying device is a double-screw mixer body, the second feeding port and the second discharging port of the second stirring and conveying device are respectively located at two ends of the second stirring and conveying device, the second stirring and conveying device is located below the first stirring and conveying device, and the material conveying direction of the second stirring and conveying device is opposite to that of the first stirring and conveying device, and the first discharging port of the first stirring and conveying device is sealed and connected with the second feeding port of the second stirring and conveying device located above.

[0010] Preferably, the first feed port is funnel-shaped and can be in a sealed state after the feeding is completed. A nozzle is provided on the top of the first feed port, and the bacterial strain and liquid are sprayed into the first shell through the nozzle.

[0011] Further preferably, the second stirring and conveying device includes a second screw rod, a second drive motor and a second shell, the second screw rod is coaxially arranged inside the second shell, one end of the main shaft of the second drive motor passes through the side wall of the second shell and is fixedly connected to the second screw rod, the other end of the second screw rod is fixedly connected to the discharging end of the discharging auger, the second shell is provided with a second feed port, a second discharge port and a breathing valve, the second feed port is sealed and connected to the first discharge port through a first pipe, the first pipe is provided with a first air shut-off device, and the breathing valve is fixedly arranged on the top of the second shell.

[0012] The beneficial effects of the utility model are:

[0013] The utility model combines a first stirring and conveying device with a second stirring and conveying device, adds bacterial liquid or bacterial strains and materials into the first stirring and conveying device for preliminary stirring, and then conveys the materials to the second stirring and conveying device for uniform stirring, thereby improving work efficiency without the need for manual preliminary stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural schematic diagram of the continuous solid fermentation device of the utility model.

[0016] Description of Reference Numerals

[0017] 10. First air lock; 20. Second air lock;

[0018] 100, first stirring and conveying device; 110, first feed inlet; 120, first discharge outlet;

[0019] 200, second stirring and conveying device; 210, second feed inlet; 220, second discharge outlet;

[0020] 230. Discharging auger;

[0021] 300, third stirring and conveying device; 310, third feed inlet; 320, third discharge outlet;

[0022] 330. Temperature control housing; 340. pH T online monitoring device;

[0023] 400, fourth stirring and conveying device; 410, feeding auger; 411, fourth feeding port;

[0024] 412, first air inlet; 413, second air inlet;

[0025] 420. Turn over the inclined lifting board; 430. Vibrator; 440. Aggregate trough. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] like Figure 1As shown, this embodiment provides a continuous solid fermentation device, which includes a first stirring and conveying device 100, a second stirring and conveying device 200, a third stirring and conveying device 300 and a fourth stirring and conveying device 400, wherein the first discharge port 120 of the first stirring and conveying device 100 is sealed and connected with the second feed port 210 of the second stirring and conveying device 200, the second discharge port 220 of the second stirring and conveying device 200 is sealed and connected with the third feed port 310 of the third stirring and conveying device 300, the third feed port 310 of the third stirring and conveying device 300 is sealed and connected with the fourth feed port 411 of the fourth stirring and conveying device 400, and the fourth discharge port of the fourth stirring and conveying device 400 is sealed and connected with the first stirring and conveying device 100, so that the four stirring and conveying devices are connected in sequence, and the four stirring and conveying devices are all sealed. A temperature control device is set on the third stirring and conveying device 300, and the temperature control device is used to achieve high temperature disinfection of the third stirring and conveying device 300 and provide suitable temperature conditions for the strains, so as to reduce the volume of the equipment, and then reduce the floor space of the equipment.

[0028] In this embodiment, the first feed port 110 of the first stirring and conveying device 100 is used to add the removed materials, bacteria and liquids, and the first feed port 110 and the first discharge port 120 of the first stirring and conveying device 100 are respectively located at two ends of the first stirring and conveying device 100. Specifically, the first stirring and conveying device 100 includes a first screw rod, a first drive motor and a first housing. The first screw rod is coaxially arranged inside the first housing. One end of the main shaft of the first drive motor passes through a closed variable frequency feeder and is fixedly connected to the first screw rod. The speed at which the material enters the second stirring and conveying device 200 is achieved by the closed variable frequency feeder. The two ends of the first housing are respectively in a sealed state. The end of the first housing close to the first drive motor is provided with a first feed port 110. The first feed port 110 is funnel-shaped, and the first feed port 110 can be in a sealed state after the feeding is completed. A nozzle is provided at the top of the first feed port 110. The nozzle is connected to a bacterial liquid barrel arranged outside the first stirring and conveying device 100. The bacterial liquid is sprayed into the material in the first housing through the nozzle, and then enters the second stirring and conveying device 200 through the stirring and conveying of the screw rod. In this embodiment, the first stirring and conveying device 100 can be obtained by improving the existing auger equipment.

[0029] In this embodiment, the second splint conveying device is transformed from a double-screw mixer. Specifically, the second feed port 210 and the second discharge port 220 of the second stirring and conveying device 200 are respectively located at the two ends of the second stirring and conveying device 200, and the second stirring and conveying device 200 is located below the first stirring and conveying device 100, and the material conveying direction of the second stirring and conveying device 200 is opposite to that of the first stirring and conveying device 100, and the first discharge port 120 of the first stirring and conveying device 100 is sealed and connected with the second feed port 210 located above the second stirring and conveying device 200. Preferably, the second stirring and conveying device 200 includes a second screw rod, a second drive motor and a second housing, the second screw rod is coaxially arranged inside the second housing, one end of the main shaft of the second drive motor passes through the side wall of the second housing and is fixedly connected to the second screw rod, and the other end of the second screw rod is fixedly connected to the discharge auger 230 of the fourth stirring and conveying device 400, and the material in the fourth stirring and conveying device 400 is transported to the second stirring and conveying device 200 through the discharge auger 230, completing a stirring cycle. The second housing is provided with a second feed port 210, a second discharge port 220 and a breathing valve, the second feed port 210 is sealed and connected with the first discharge port 120 through a first pipe, the first pipe is provided with a first air lock 10, the breathing valve is fixedly arranged on the top of the second housing, and the breathing valve is used to adjust the pressure inside the second stirring and conveying device 200. In this embodiment, the air flow in the first pipe is adjusted by the first air lock 10, the ventilation volume is adjusted, and the external air is prevented from entering the first pipe to pollute the material, so that the material is further stirred and fermented in the second stirring and conveying device 200.

[0030] In this embodiment, the third stirring and conveying device 300 is also made by improving the auger. The third feed port 310 and the third discharge port 320 of the third stirring and conveying device 300 are respectively located at two ends of the third stirring and conveying device 300, and the third stirring and conveying device 300 is located on one side of the second stirring and conveying device 200, and the third feed port 310 of the third stirring and conveying device 300 is sealed and connected with the second discharge port 220 of the second stirring and conveying device 200, and a temperature control device is provided on the outside of the third stirring and conveying device 300, and the stirring temperature of the internal material of the third stirring and conveying device 300 is controlled by adjusting the temperature control device. Specifically, the third stirring and conveying device 300 includes a third screw rod, a third driving electrolytic cell and a third shell. The third screw rod is coaxially arranged inside the third shell. One end of the main shaft of the third driving motor passes through the side wall of the third shell and is fixedly connected to the third screw rod. The third shell is provided with a third discharge port 320 and a third feed port 310. The third feed port 310 is connected to the second discharge port 220 through a second pipeline. The second pipeline is provided with a second air lock 20. A pH T online monitoring device 340 for detecting the pH value of the discharged material is provided at the third discharge port 320 of the third shell. The pH value and temperature of the material at the outlet of the third stirring and conveying device 300 are detected by the pH T online monitoring device. The temperature control device sealing sleeve is provided on the outside of the third shell.

[0031] Specifically, in this embodiment, if Figure 1As shown, the temperature control device includes a water pipe arranged along the third shell, a temperature control shell 330, an isolation layer arranged inside the shell, a water tank and a water pump, a heating device is arranged in the water tank, the water inlet section of the water pump is connected to the water tank, the water outlet of the water pump is connected to the water pipe, a sealed space is formed between the temperature control shell 330 and the third shell, and the water pipe is located between the temperature control shell 330 and the third shell. The isolation layer is fixedly attached to the inner wall of the temperature control shell 330, and the isolation layer can expand due to heat. The isolation layer is filled with sodium bicarbonate powder, and the pyrolysis temperature of sodium bicarbonate is 50 degrees. In this embodiment, the temperature control of the material inside the third stirring and conveying device 300 is achieved by controlling the temperature of the water. In addition, the isolation layer of this embodiment adopts an inflatable isolation layer, but sodium bicarbonate is filled in the isolation layer, instead of adopting the traditional external inflatable type, which can better play the heat insulation effect between the space between the third shell and the temperature control shell 330 and the external space. During use, the insulating layer needs to be fixed on the inner wall of the temperature control shell 330, and then heated water is passed into the water pipe, so that the decomposition rate of the sodium bicarbonate in the insulating layer is accelerated, so that the insulating layer quickly fills the space between the third shell and the temperature control shell 330, and at the same time, the insulating layer is also pressed into the gap between the two adjacent coiled water pipes to play a heat insulation role. In this way, the heat loss in the water pipe can be effectively reduced, and at the same time, the temperature loss in the third stirring and conveying device 300 is minimized, so that the temperature change range in the third stirring and conveying device 300 is small and can be ignored, thereby increasing the fermentation speed of the third stirring and conveying device 300.

[0032] In addition, in order to further reduce the heat loss in the third stirring and conveying device 300, sealing gaskets are respectively provided at the connection between the two ends of the temperature-controlled shell 330 and the third shell. The structure of the sealing gasket is similar to that of the isolation layer. Similarly, the middle part of the sealing gasket is filled with sodium bicarbonate powder. The pyrolysis temperature of the sodium bicarbonate powder is 50 degrees. The connection between the two ends of the temperature-controlled shell 330 and the third shell is quickly sealed by the expanded sealing gasket, thereby reducing heat loss.

[0033] In this embodiment, the fourth feed port 411 and the fourth discharge port of the fourth stirring and conveying device 400 are respectively located at the two ends of the fourth stirring and conveying device 400, and the fourth feed port 411 of the fourth stirring and conveying device 400 is sealed and connected with the third discharge port 320 of the third stirring and conveying device 300. The fourth feed port 411 of the fourth stirring and conveying device 400 is also provided with a first air inlet 412 and a second air inlet 413, and the first air inlet 412 and the second air inlet 413 are respectively used for pure air and air sterilization gas to enter the fourth stirring and conveying device 400. Preferably, the fourth stirring and conveying device 400 includes a feed auger 410 and a fourth outer shell arranged in a rolling manner (the fourth outer shell is in the shape of a drum, and its rolling driving device can refer to the existing rotary fermentation bed device, and its principle is similar, and it will not be repeated in this embodiment), that is, a discharge auger 230 and a feed auger 410 are respectively arranged at the two ends of the fourth frame conveying device. The fourth feed port 411 of the feed auger 410 is sealed and connected with the third discharge port 320 through the third pipe, and the first air inlet 412 and the second air inlet 413 are arranged at the fourth feed port 411. The discharge end of the feed auger 410 is inserted into the sealed fourth shell, and the inner wall of the fourth shell is inclinedly provided with a flipping inclined shoveling plate 420 (the flipping inclined shoveling plate 420 can also be arranged in an arc shape). The fourth shell is continuously rotated, so that the material continuously moves toward the collection trough 440 at one end of the first stirring and conveying device 100, and the inlet end of the discharge auger 230 is arranged in the collection trough 440. In this way, the material in the fourth stirring and conveying device 400 is transported to the second stirring and conveying device 200 through the discharge auger 230 (in order to facilitate the discharge of the discharge auger 230, the flipping inclined shoveling plate 420 at the collection trough 440 is arranged more densely), completing a stirring cycle and feeding cycle of the material. Since the shell of the fourth shell is relatively large, a plurality of rappers 430 are provided outside the fourth shell, and the materials adhering to the inner wall of the fourth shell are knocked down by the rappers 430 .

[0034] This embodiment also provides a method for using a continuous solid fermentation device, comprising the following steps:

[0035] S100: Start the first stirring and conveying device 100, the second stirring and conveying device 200, the third stirring and conveying device 300 and the fourth stirring and conveying device 400. If it is anaerobic fermentation, the temperature of the temperature control device is increased to reach the sterilization temperature. If it is aerobic fermentation, the temperature control device is adjusted according to the material to reach a suitable fermentation temperature, and pure air is input into the first air inlet 412, and air sterilization gas is input into the second air inlet 413;

[0036] S200: adding materials, bacterial strains, bacterial liquid, etc. into the first stirring and conveying device 100 through the first feed inlet 110 of the first stirring and conveying device 100, so that the materials and bacterial strains are preliminarily mixed in the first stirring and conveying device 100;

[0037] S300: the material enters the second stirring and conveying device 200 through the first stirring and conveying device 100, so that the material is further mixed in the second stirring and conveying device 200;

[0038] S400: the material enters the third stirring and conveying device 300 through the second stirring and conveying device 200. When the material is further mixed in the third stirring and conveying device 300, if it is aerobic fermentation, the material temperature is raised to a suitable temperature, and if it is anaerobic fermentation, a sterilization effect is achieved in the third stirring and conveying device 300;

[0039] S500: The material enters the fourth stirring and conveying device 400 through the third stirring and conveying device 300, so that the material is fully mixed in the fourth stirring and conveying device 400, and the material is sent to the second stirring and conveying device 200, so that the material is continuously circulated, stirred and fermented in the four stirring and conveying devices.

[0040] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A double-screw ribbon mixer, characterized in that: include: A first stirring and conveying device, the first stirring and conveying device comprises a first screw rod, a first drive motor and a first shell, the first screw rod is coaxially arranged inside the first shell, one end of the first shell close to the first drive motor is provided with a first feed port, the first feed port is used to add impurity-removed materials, strains and liquids, the other end of the first shell is provided with a first discharge port, one end of the main shaft of the first drive motor passes through a closed frequency conversion feeder and is fixedly connected to the first screw rod, and the two ends of the first shell are respectively in a sealed state; The second stirring and conveying device is a double-screw mixer body, the second feeding port and the second discharging port of the second stirring and conveying device are respectively located at two ends of the second stirring and conveying device, the second stirring and conveying device is located below the first stirring and conveying device, and the material conveying direction of the second stirring and conveying device is opposite to that of the first stirring and conveying device, and the first discharging port of the first stirring and conveying device is sealed and connected with the second feeding port of the second stirring and conveying device located above.

2. A double-screw ribbon mixer according to claim 1, characterized in that: The first feed port is funnel-shaped and can be in a sealed state after the feeding is completed. A nozzle is provided on the top of the first feed port, and the bacterial strain and liquid are sprayed into the first shell through the nozzle.

3. A double-screw ribbon mixer according to claim 2, characterized in that: The second stirring and conveying device includes a second screw rod, a second drive motor and a second shell. The second screw rod is coaxially arranged inside the second shell. One end of the main shaft of the second drive motor passes through the side wall of the second shell and is fixedly connected to the second screw rod. The other end of the second screw rod is fixedly connected to the discharging end of the discharging auger. The second shell is provided with the second feed port, the second discharge port and a breathing valve. The second feed port is sealed and connected with the first discharge port through a first pipe. The first pipe is provided with a first air lock. The breathing valve is fixedly set on the top of the second shell.

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