Straw wet fermentation biogas slurry treatment device

Abstract

The invention discloses a straw wet fermentation biogas slurry treatment device. The device comprises a circulating assembly, an anti-blocking assembly and a stirring assembly, the circulating assembly is used for circularly pumping out biogas slurry and mixing the biogas slurry with straws for utilization, the anti-blocking assembly is used for continuously and stably conveying the straws and preventing accumulation and blockage when the straws are poured in, and the stirring assembly is used for continuously and uniformly rotating and stirring straw piles deposited at the bottom of the reaction kettle up and down. A second motor drives a second rotating shaft to drive a rotating cover to rotate, so that a first gear, a second gear and a third gear are meshed with each other to rotate, a first reciprocating lead screw and a second reciprocating lead screw are driven to rotate, and a first stirring plate and a second stirring plate do reciprocating motion under the guiding action of a first guide rod and a second guide rod; straw piles deposited at the bottom of the reaction kettle are continuously and uniformly rotated and stirred up and down, so that the uniformity of straw fermentation is favorably improved.

Description

Technical Field

[0001] The invention relates to the technical field of biogas slurry treatment, and in particular to a device for treating biogas slurry by wet fermentation of straw. Background Art

[0002] Straw biogas refers to a combustible gas produced by anaerobic fermentation of microorganisms using biogas equipment and crop straw as the main raw material in a strict anaerobic environment and under certain conditions of temperature, moisture, pH, etc. Straw biogas, as a clean, convenient and low-cost new energy source, has broad development prospects and lays a solid foundation for the development of ecological rural areas.

[0003] For the current straw wet fermentation biogas processing device, such as a straw biogas feeding device and a straw biogas system disclosed in Chinese Patent Publication No. "CN113755308B", a large amount of straw will continue to deposit at the bottom of the fermentation tank during use, making the fermentation contact area between the straw and the biogas incomplete, greatly reducing the biogas production efficiency and being very inconvenient to use. Accordingly, the present invention applies for a straw wet fermentation biogas processing device. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a straw wet fermentation biogas slurry treatment device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A straw wet fermentation biogas slurry treatment device comprises a circulation component, an anti-blocking component and a stirring component; The circulation component is used to circulate and extract the biogas slurry and mix it with straw for utilization, and the circulation component includes a reactor and a buffer box fixedly connected to one side of the reactor; The anti-blocking component is used to continuously and stably transport the straw to prevent accumulation and blockage when pouring the straw. The anti-blocking component includes a conveying pipe fixedly connected to one side of the reactor and a first motor fixedly arranged on the conveying pipe; The stirring assembly is used to continuously and evenly stir the straw pile deposited at the bottom of the reactor by rotating it up and down. The stirring assembly includes a fixed collar fixedly connected to the bottom of the inner side of the reactor and a second rotating shaft rotatably connected inside the fixed collar and rotatably connected to the reactor.

[0006] Preferably, the bottom of the buffer box is fixedly connected with a water pump connected to the reactor, the top of the buffer box is fixedly connected with a water outlet pipe connected to the reactor, the outlet pipe is fixedly connected with a mixing pipe on one side inside the reactor, the bottom of the mixing pipe is fixedly connected with a dispersion pipe, a number of evacuation holes are opened on the dispersion pipe, a high-pressure biogas slurry pump is fixedly provided on one side of the buffer box, and a cleaning component for filtering and preventing straw brought in during pumping is provided on the side of the water pump located inside the reactor.

[0007] Preferably, the conveying pipe is rotatably connected inside with a first rotating shaft fixedly connected to the driving end of the first motor, the first rotating shaft is fixedly connected with a spiral blade, a feed pipe is fixedly connected on the conveying pipe and located on the outside of the reactor, and the conveying pipe is connected to the mixing tube on one side inside the reactor.

[0008] Preferably, a rotating cover rotatably connected to the reactor is fixedly connected at the top of the second rotating shaft, a first gear is fixedly connected to the fixed collar, a second gear is rotatably connected inside the rotating cover and located on one side of the first gear, a third gear is rotatably connected inside the rotating cover and located on the other side of the first gear, a first reciprocating screw rotatably connected to the rotating cover is fixedly connected to the second gear, two first guide rods are fixedly connected on both sides of the first reciprocating screw and located on the top of the rotating cover, a first stirring plate is threadedly sleeved on the first reciprocating screw and slidably connected to the two first guide rods, a second reciprocating screw rotatably connected to the rotating cover is fixedly connected to the third gear, two second guide rods are fixedly connected on both sides of the second reciprocating screw and located on the top of the rotating cover, a second stirring plate is threadedly sleeved on the second reciprocating screw and slidably connected to the two second guide rods, a second motor fixedly connected between the driving end and the second rotating shaft is fixedly connected to the bottom of the reactor, a baffle is fixedly connected to the tops of the two first guide rods and the two second guide rods, and the first reciprocating screw and the second reciprocating screw are all rotatably connected to the baffle.

[0009] Preferably, the cleaning assembly includes a filter box fixedly connected to one side of the water suction pipe, a filter plate is fixedly provided on one side of the filter box, a fixed scraper is fixedly connected to the side of the second agitating plate close to the filter plate, and a plurality of cleaning scraper needles are fixedly connected to the top and bottom of the fixed scraper close to the filter plate.

[0010] Preferably, a support base is fixedly connected to the reactor, a sealing cover plate is fixedly connected to the top of the reactor, and a gas outlet connected to the inside of the reactor is fixedly connected to the top of the sealing cover plate.

[0011] Preferably, the first gear is meshed with the second gear and the third gear respectively, and the threads on the first reciprocating screw and the second reciprocating screw are in opposite directions.

[0012] The present invention has the following beneficial effects: 1. By setting up a circulation component, the biogas slurry in the reactor can be extracted and circulated back into the reactor. The mixing pipe and the dispersion pipe connected to the outlet pipe, and a number of evacuation holes are opened on the dispersion pipe, so that the biogas slurry can be more evenly dispersed into the reactor and fully mixed with the straw, which improves the efficiency and effect of wet fermentation of straw and helps to make fuller use of biogas slurry to ferment straw.

[0013] 2. By setting up the anti-blocking component, the first rotating shaft and the spiral blade in the conveying pipe rotate under the drive of the first motor, so that the straw can be continuously and stably conveyed from the feeding pipe to the mixing pipe in the reactor. This conveying method can avoid the accumulation and blockage of straw when pouring into the reactor, ensure that the straw can smoothly enter the reactor to participate in the fermentation process, and maintain the stability of the device operation.

[0014] 3. By setting up a stirring assembly and a cleaning assembly, the second motor can be used to drive the second rotating shaft, drive the rotating cover to rotate, and then the first gear, the second gear and the third gear are meshed and rotated with each other, driving the first reciprocating screw and the second reciprocating screw to rotate, so that the first stirring plate and the second stirring plate reciprocate under the guidance of the first guide rod and the second guide rod, and the straw pile deposited at the bottom of the reactor is continuously and evenly rotated up and down to stir, which helps to improve the uniformity of straw fermentation. At the same time, the fixed scraper and cleaning scraper needle on the second stirring plate can clean the filter plate during the stirring process to prevent the filter plate from being blocked by straw and affecting the normal pumping of the pumping pipe, ensuring the smooth flow of the biogas slurry circulation system and further improving the overall performance and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a straw wet fermentation biogas slurry treatment device proposed by the present invention; Figure 2 It is a schematic diagram of the internal structure of the reactor in the present invention; Figure 3 It is a structural schematic diagram of the stirring assembly in the present invention; Figure 4 It is a schematic diagram of the internal structure of the rotating cover in the present invention; Figure 5 It is a schematic diagram of the structure of the cleaning component in the present invention; Figure 6 It is a structural schematic diagram of the anti-blocking component in the present invention; Figure 7 for Figure 3Schematic diagram of the enlarged structure of A.

[0016] In the figure: 1 reactor, 2 support base, 3 sealing cover plate, 4 air outlet, 5 buffer box, 6 water pumping pipe, 7 water outlet pipe, 8 mixing pipe, 9 dispersion pipe, 10 evacuation hole, 11 high pressure biogas pump, 12 delivery pipe, 13 first motor, 14 first rotating shaft, 15 spiral blade, 16 feeding pipe, 17 fixed collar, 18 second rotating shaft, 19 rotating cover, 20 first gear, 21 second gear, 22 third gear, 23 first reciprocating screw, 24 first guide rod, 25 first stirring plate, 26 second reciprocating screw, 27 second guide rod, 28 second stirring plate, 29 second motor, 30 baffle, 31 filter box, 32 filter plate, 33 fixed scraper, 34 cleaning scraper needle. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Embodiment 1: Reference Figure 1 , Figure 2 and Figure 6 , a straw wet fermentation biogas slurry treatment device, comprising a circulation component, an anti-blocking component and a stirring component; The circulation component is used to circulate and extract the biogas slurry and mix it with straw for utilization. The circulation component includes a reactor 1 and a buffer box 5 fixedly connected to one side of the reactor 1; The anti-blocking component is used to continuously and stably transport the straw to prevent accumulation and blockage when pouring the straw. The anti-blocking component includes a conveying pipe 12 fixedly connected to one side of the reactor 1 and a first motor 13 fixedly arranged on the conveying pipe 12; The stirring assembly is used to continuously and evenly stir the straw pile deposited at the bottom of the reactor 1 by rotating up and down, and the stirring assembly includes a fixed collar 17 fixedly connected to the bottom of the inner side of the reactor 1 and a second rotating shaft 18 rotatably connected inside the fixed collar 17 and rotatably connected to the reactor 1; The bottom of the buffer box 5 is fixedly connected with a water pumping pipe 6 connected with the reactor 1, the top of the buffer box 5 is fixedly connected with a water outlet pipe 7 connected with the reactor 1, the outlet pipe 7 is fixedly connected with a mixing pipe 8 on one side inside the reactor 1, the bottom of the mixing pipe 8 is fixedly connected with a dispersion pipe 9, and a plurality of evacuation holes 10 are opened on the dispersion pipe 9, a high-pressure biogas slurry pump 11 is fixedly provided on one side of the buffer box 5, and a cleaning component for filtering and preventing clogging of straw brought in during water pumping is provided on one side of the water pumping pipe 6 located inside the reactor 1; A first rotating shaft 14 fixedly connected to the driving end of the first motor 13 is rotatably connected inside the delivery pipe 12, a spiral blade 15 is fixedly connected to the first rotating shaft 14, a feed pipe 16 is fixedly connected to the delivery pipe 12 and located outside the reactor 1, and one side of the delivery pipe 12 located inside the reactor 1 is connected to the mixing pipe 8; In this embodiment, the high-pressure biogas slurry pump 11 fixedly arranged on one side of the buffer tank 5 is started, and the high-pressure biogas slurry pump 11 extracts the biogas slurry in the reactor 1 through the pumping pipe 6 and transports it to the buffer tank 5, and then the biogas slurry flows back from the buffer tank 5 to the reactor 1 through the outlet pipe 7. After the biogas slurry enters the reactor 1 from the outlet pipe 7, it is sprayed out in a dispersed form through the mixing pipe 8 and the dispersion pipe 9, which greatly increases the contact area between the biogas slurry and the straw, realizes the full mixing of the biogas slurry and the straw, and improves the efficiency and effect of the wet fermentation of the straw; Furthermore, the first motor 13 is started, and the first motor 13 drives the first rotating shaft 14 to rotate, and the spiral blades 15 on the first rotating shaft 14 rotate accordingly. The straw enters the conveying pipe 12 from the feeding pipe 16, and is continuously and stably conveyed to the mixing pipe 8 in the reactor 1 under the push of the spiral blades 15, thereby avoiding the accumulation and blockage of the straw when pouring into the reactor 1, ensuring that the straw can smoothly enter the reactor 1 to participate in the fermentation process, and reflecting the beneficial effect of preventing the straw from being blocked.

[0019] Embodiment 2: Reference Figure 2-Figure 7 Compared with the first embodiment, in this embodiment, a rotating cover 19 rotatably connected to the reactor 1 is fixedly connected to the top of the second rotating shaft 18, a first gear 20 is fixedly connected to the fixed collar 17, a second gear 21 is rotatably connected to the inside of the rotating cover 19 and located on one side of the first gear 20, a third gear 22 is rotatably connected to the inside of the rotating cover 19 and located on the other side of the first gear 20, a first reciprocating screw 23 rotatably connected to the rotating cover 19 is fixedly connected to the second gear 21, two first guide rods 24 are fixedly connected to both sides of the first reciprocating screw 23 and located on the top of the rotating cover 19, and a threaded sleeve is provided on the first reciprocating screw 23 to connect to the two first guide rods 24 A first stirring plate 25 is slidably connected therebetween, a second reciprocating screw 26 rotatably connected to the rotating cover 19 is fixedly connected to the third gear 22, two second guide rods 27 are fixedly connected to both sides of the second reciprocating screw 26 and located on the top of the rotating cover 19, a second stirring plate 28 is threadedly sleeved on the second reciprocating screw 26 and slidably connected to the two second guide rods 27, a second motor 29 is fixedly connected between the driving end and the second rotating shaft 18 at the bottom of the reactor 1, a baffle 30 is fixedly connected to the tops of the two first guide rods 24 and the two second guide rods 27, and the first reciprocating screw 23 is rotatably connected to the second reciprocating screw 26 and the baffle 30.

[0020] The first gear 20 is meshed with the second gear 21 and the third gear 22 respectively. The threads of the first reciprocating screw 23 and the second reciprocating screw 26 are arranged in opposite directions.

[0021] The cleaning component includes a filter box 31 fixedly connected to one side of the water suction pipe 6, a filter plate 32 is fixedly provided on one side of the filter box 31, a fixed scraper 33 is fixedly connected to the side of the second agitating plate 28 close to the filter plate 32, and a plurality of cleaning scraper needles 34 are fixedly connected to the top and bottom of the fixed scraper 33 close to the filter plate 32.

[0022] In this embodiment, when working, the second motor 29 is started, the second motor 29 drives the second rotating shaft 18 to rotate, the second rotating shaft 18 drives the rotating cover 19 to rotate, the first gear 20 in the rotating cover 19 rotates, and the second gear 21 and the third gear 22 are driven to rotate by meshing with the second gear 21 and the third gear 22. Since the threads of the first reciprocating screw 23 and the second reciprocating screw 26 are in opposite directions, the rotation of the second gear 21 and the third gear 22 causes the first reciprocating screw 23 and the second reciprocating screw 26 to rotate, and then the first stirring plate 25 and the second stirring plate 28 are guided by the first guide rod 24 and the second guide rod 27 to reciprocate, and the straw pile deposited at the bottom of the reactor 1 is continuously and evenly rotated up and down to stir, which helps to improve the uniformity of straw fermentation.

[0023] Furthermore, a cleaning assembly is provided on one side of the water pumping pipe 6 located inside the reactor 1, including a filter box 31 fixedly connected to one side of the water pumping pipe 6, a filter plate 32 fixedly provided on one side of the filter box 31, used to filter and prevent clogging of straw brought in during water pumping, ensure normal water pumping of the water pumping pipe 6, and maintain smooth circulation of biogas slurry, a fixed scraper 33 is fixedly connected to one side of the second stirring plate 28 close to the filter plate 32, and a plurality of cleaning scraper needles 34 are fixedly connected to the top and bottom of the fixed scraper 33 close to the filter plate 32. In the process of the reciprocating motion of the second stirring plate 28, the fixed scraper 33 and the cleaning scraper needles 34 can clean the filter plate 32, prevent the filter plate 32 from being blocked by straw and affecting the normal water pumping of the water pumping pipe 6, ensure the smooth flow of the biogas slurry circulation system, and achieve the beneficial effects of effective stirring and cleaning.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A straw wet fermentation biogas slurry treatment device, comprising a circulation component, an anti-blocking component and a stirring component, It is characterized by: The circulation component is used to circulate and extract the biogas slurry for mixing with straw for utilization, and the circulation component comprises a reactor (1) and a buffer box (5) fixedly connected to one side of the reactor (1); The anti-blocking component is used to continuously and stably transport the straw to prevent accumulation and blockage when pouring the straw. The anti-blocking component comprises a transport pipe (12) fixedly connected to one side of the reactor (1) and a first motor (13) fixedly arranged on the transport pipe (12); The stirring assembly is used to continuously and evenly stir the straw pile deposited at the bottom of the reactor (1) by rotating it up and down, and the stirring assembly comprises a fixed collar (17) fixedly connected to the bottom of the inner side of the reactor (1) and a second rotating shaft (18) rotatably connected inside the fixed collar (17) and rotatably connected to the reactor (1).

2. A straw wet fermentation biogas slurry treatment device according to claim 1, characterized in that: The bottom of the buffer box (5) is fixedly connected to a water pumping pipe (6) connected to the reactor (1), the top of the buffer box (5) is fixedly connected to a water outlet pipe (7) connected to the reactor (1), the outlet pipe (7) is fixedly connected to a mixing pipe (8) on one side located inside the reactor (1), the bottom of the mixing pipe (8) is fixedly connected to a dispersion pipe (9), and a plurality of evacuation holes (10) are provided on the dispersion pipe (9), a high-pressure biogas slurry pump (11) is fixedly provided on one side of the buffer box (5), and a cleaning component for filtering and preventing clogging of straw brought in during water pumping is provided on one side of the water pumping pipe (6) located inside the reactor (1).

3. A straw wet fermentation biogas slurry treatment device according to claim 2, characterized in that: A first rotating shaft (14) fixedly connected to the driving end of the first motor (13) is rotatably connected inside the delivery pipe (12), and a spiral blade (15) is fixedly connected to the first rotating shaft (14). A feed pipe (16) is fixedly connected to the delivery pipe (12) and located outside the reaction kettle (1). The delivery pipe (12) is connected to the mixing pipe (8) on one side located inside the reaction kettle (1).

4. A straw wet fermentation biogas slurry treatment device according to claim 1, characterized in that: A rotating cover (19) rotatably connected to the reaction kettle (1) is fixedly connected to the top of the second rotating shaft (18); a first gear (20) is fixedly connected to the fixed collar (17); a second gear (21) is rotatably connected inside the rotating cover (19) and located on one side of the first gear (20); a third gear (22) is rotatably connected inside the rotating cover (19) and located on the other side of the first gear (20); a first reciprocating screw (23) rotatably connected to the rotating cover (19) is fixedly connected to the second gear (21); two first guide rods (24) are fixedly connected to both sides of the first reciprocating screw (23) and located on the top of the rotating cover (19); a threaded sleeve on the first reciprocating screw (23) is provided with a through-sliding connection between the two first guide rods (24). The first stirring plate (25) is fixedly connected to the third gear (22) with a second reciprocating screw (26) rotatably connected to the rotating cover (19); two second guide rods (27) are fixedly connected on both sides of the second reciprocating screw (26) and located on the top of the rotating cover (19); a second stirring plate (28) is threadedly sleeved on the second reciprocating screw (26) and is slidably connected to the two second guide rods (27); a second motor (29) is fixedly connected between a driving end and a second rotating shaft (18) at the bottom of the reactor (1); a baffle (30) is fixedly connected to the tops of the two first guide rods (24) and the two second guide rods (27); and the first reciprocating screw (23) is rotatably connected to the second reciprocating screw (26) and the baffle (30).

5. A straw wet fermentation biogas slurry treatment device according to claim 4, characterized in that: The cleaning assembly comprises a filter box (31) fixedly connected to one side of the water suction pipe (6); a filter plate (32) is fixedly provided on one side of the filter box (31); a fixed scraper (33) is fixedly connected to one side of the second stirring plate (28) close to the filter plate (32); and a plurality of cleaning scraper needles (34) are fixedly connected to the top and bottom of the fixed scraper (33) close to the filter plate (32).

6. The straw wet fermentation biogas slurry treatment device according to claim 1, characterized in that: The reactor (1) is fixedly connected to a support base (2), the top of the reactor (1) is fixedly connected to a sealing cover plate (3), and the top of the sealing cover plate (3) is fixedly connected to an air outlet connected to the interior of the reactor (1).

7. The straw wet fermentation biogas slurry treatment device according to claim 4, characterized in that: The first gear (20) is meshed with the second gear (21) and the third gear (22) respectively, and the threads on the first reciprocating screw (23) and the second reciprocating screw (26) are in opposite directions.

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