Biological hydrogen production device

Abstract

The invention discloses a biological hydrogen production device, and relates to the technical field of biological hydrogen production, the biological hydrogen production device comprises a working frame, a supporting plate is arranged on the surface of the working frame, a material containing disc is placed on the upper end face of the supporting plate, the upper end of the working frame is further fixedly connected with a shell, the upper end face of the shell is fixedly connected with a crushing box, and a crushing assembly is arranged in the crushing box; the upper end face of the crushing box fixedly communicates with a feeding port, the upper end face of the crushing box is fixedly connected with a dust cover, the screening assembly is arranged in the shell and used for screening substrates crushed by the crushing assembly, the cleaning assembly is arranged in the shell, and the cleaning assembly is in linkage with the screening assembly. The cleaning assembly is used for cleaning the residual substrate on the screening assembly, and the stirring assembly is arranged on the supporting plate and used for stirring the substrate, so that the substrate is more uniformly distributed in the material containing disc, and the problem that the use efficiency of the substrate is further influenced and the biological hydrogen production effect is influenced due to non-uniform distribution of microorganisms in the substrate is solved.

Description

Technical Field

[0001] The invention relates to the technical field of biohydrogen production, and in particular to a biohydrogen production device. Background Art

[0002] In the global energy system, fossil fuels such as coal, oil, and natural gas are still the backbone of energy consumption, accounting for more than 80% of the energy consumption structure, and are also the source of most greenhouse gas emissions. The development of renewable clean energy is imperative. Hydrogen energy has become the focus of attention because of its cleanness, high energy density, diverse production methods, and wide sources of raw materials.

[0003] The main source of hydrogen in biohydrogen production is the hydrogen produced by biological metabolism, and the main group that can produce hydrogen is microorganisms. Therefore, the most important part of biohydrogen production is the cultivation of microorganisms. Microorganisms in the laboratory live in substrates in culture dishes, which are rich in nutrients needed by microorganisms. However, since a large number of microorganisms are required in the hydrogen production process, the hydrogen produced by microorganisms in the culture dishes is obviously not enough to meet the needs of biohydrogen production.

[0004] At this time, a large amount of substrate is needed to cultivate microorganisms. In the process of increasing the substrate, due to the large amount of substrate, the microorganisms will be unevenly distributed in the substrate, which will further affect the utilization efficiency of the substrate and thus affect the effect of biohydrogen production. Summary of the invention

[0005] The purpose of the present invention is to provide a biohydrogen production device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a biohydrogen production device, comprising a work frame, a support plate is provided on the surface of the work frame, a material tray is placed on the upper end surface of the support plate, a shell is fixedly connected to the upper end of the work frame, and a crushing box is fixedly connected to the upper end surface of the shell, a crushing assembly is provided inside the crushing box, a feed port is fixedly connected to the upper end surface of the crushing box, and a dust cover is fixedly connected to the upper end surface of the crushing box, and the biohydrogen production device also includes:

[0007] A screening component, the screening component is arranged in the housing, and the screening component is used to screen the substrate crushed by the crushing component;

[0008] A cleaning component, the cleaning component is arranged in the housing, the cleaning component is linked with the screening component, and the cleaning component is used to clean the substrate remaining on the screening component;

[0009] A stirring component is arranged on the support plate and is used for stirring the substrate so that the substrate is distributed more evenly in the material holding tray.

[0010] Optionally, the crushing assembly includes:

[0011] A fixing plate 1, the upper end surface of the fixing plate 1 is fixedly connected to the inner upper end surface of the dust cover, and the upper end surface of the crushing box is also provided with a motor 1, the output end of the motor 1 is rotatably connected to the lower end side surface of the fixing plate 1, the output end of the motor 1 is also fixedly connected to a cam, the lower end of the cam is hinged with a triangular curved rod, one corner of the lower end of the triangular curved rod is hinged with a curved rod 2, the other end of the curved rod 2 is hinged with a fixing plate 2, the surface of the fixing plate 2 is fixedly connected to the inner wall of the crushing box;

[0012] A curved rod three, one end of which is hinged to the other corner of the lower end of the triangular curved rod, and the other end of which is hinged with a crushing plate, and the back of the upper end of the crushing plate is also hinged with a fixed plate three, and the upper end surface of the fixed plate three is fixedly connected to the inner upper surface of the crushing box, and a crushing plate two is also arranged opposite to the crushing plate, and the back of the crushing plate two is fixedly connected to the inner wall of the crushing box.

[0013] Optionally, the screening assembly comprises:

[0014] Gear ring one, the inner wall of the outer shell is fixedly connected with a material distribution cylinder, the upper end face of the material distribution cylinder is rotatably connected with a screening frame, the inner lower end face of the outer shell is provided with motor two, the output end of motor two is fixedly connected with the inner wall of gear ring one, the tooth surface of gear ring one is meshingly connected with gear ring two, the inner wall of gear ring two is fixedly connected with the outer surface of the screening frame, and a sieve plate is provided inside the screening frame.

[0015] Optionally, the screening assembly further comprises:

[0016] The mounting frame, the lower end surface of the mounting frame is fixedly connected to the inner upper end surface of the shell, the upper surface of the mounting frame is fixedly connected to a fixing column one, the upper end side surface of the fixing column one is rotatably connected to a gear ring three, the tooth surface of the gear ring three is meshed with the tooth surface of the gear ring two, the upper end surface of the gear ring three is fixedly connected to a sliding column one, the surface of the sliding column one is slidably connected to a sliding frame, the upper end surface of the sliding frame is fixedly connected to a toggle block, the side surface of the toggle block is slidably connected to the upper inner wall of the mounting frame, the upper end surface inner wall of the mounting frame is also fixedly connected to a limiting rod, the height of the limiting rod is higher than the toggle block;

[0017] A trapezoidal block, wherein the end face of the trapezoidal block is provided with a sliding groove, the groove wall of the sliding groove is slidably connected with a knocking rod, the surface of the knocking rod also slides through the upper inner wall of the mounting frame, the surface of the trapezoidal block is slidably connected with a spring 1, and the other end of the spring 1 is fixedly connected to the upper inner wall of the mounting frame.

[0018] Optionally, the cleaning component includes:

[0019] A rotating rod 1, the surface of which rotates and penetrates the surface of the sieve frame, and the end face of which is fixedly connected to the surface of the sieve plate, the end face of which is away from the sieve plate is fixedly connected to a paddle, a counterweight is also provided on the upper end face of one side of the sieve plate, a track block is fixedly connected to the inner upper surface of the outer shell, inclined surfaces are provided at both ends of the track block, and the upper surface of the track block is slidably connected to the surface of the paddle plate.

[0020] Optionally, the cleaning component further includes:

[0021] A material guide trough, the side of which is fixedly connected to the inner wall of the material distribution barrel, and a collecting barrel is also arranged below the side of the material guide trough.

[0022] Optionally, the stirring assembly includes:

[0023] A rotating rod 2, the upper end surface of which is fixedly connected to the lower end surface of the screening frame, the surface of which rotates through the upper end surface of the material distribution barrel, and the lower end surface of the material distribution barrel is fixedly connected with a step cover, the lower end surface of the step cover is fixedly connected with a gear ring 4, and the lower end surface of the rotating rod 2 is also fixedly connected to a stirring frame, and the upper end surface of the stirring frame is also fixedly connected with a shielding cover, and the surface of the shielding cover is slidably connected to the outer surface of the step cover.

[0024] Optionally, the stirring assembly further comprises:

[0025] Gear one, the lower end face of the gear one is rotatably connected to the upper end face of the stirring frame, the tooth surface of the gear one is meshingly connected to the tooth surface of the gear ring four, the tooth surface of the gear one is also meshingly connected with gear two, the lower end face of the gear two is fixedly connected with a rotating rod three, the surface of the rotating rod three rotates and passes through the upper surface of the stirring frame, the lower end face of the rotating rod three is also fixedly connected with a cam two, and the lower end face of the cam two is fixedly connected with a stirring rod.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention breaks large substrates into small pieces so that when the substrate is used, microorganisms can more easily absorb nutrients in the substrate, thereby improving the utility rate of the substrate and thus improving the efficiency of biohydrogen production.

[0028] Second, the present invention allows the screen frame to rotate so that the substrates dropped from the crushing assembly can fall on different screen plates, thereby improving the screening efficiency. The screen frame is also struck to vibrate the screen plates, further accelerating the screening efficiency of the substrates on the screen plates. The screening further ensures that the used substrates will not have large blocks of substrates, thereby improving the living environment of microorganisms and then the activity of microorganisms, thereby improving the efficiency of biological hydrogen production.

[0029] 3. The present invention cleans the sieve plate so that unqualified substrates accumulated on the surface of the sieve plate will not block the sieve plate, thereby affecting the screening of the substrate, thereby further improving the efficiency of the preparation for biohydrogen production.

[0030] Fourth, the present invention further makes the mixture of substrate and microorganisms more uniform by stirring the mixture of substrate and microorganisms in the material tray, thereby solving the problem of uneven mixing of substrate and microorganisms and further improving the use efficiency of the substrate.

[0031] 5. The present invention adds Clostridium butyricum and Rhodopseudomonas palustris to the substrate, thereby utilizing the non-photosynthetic hydrogen-producing bacteria Clostridium butyricum and the photosynthetic hydrogen-producing bacteria Rhodopseudomonas palustris to construct a dark-light cascade dual-bacteria hydrogen production system, and utilizing Rhodopseudomonas palustris to further metabolize the volatile fatty acids of the dark fermentation system of Clostridium butyricum to produce hydrogen, thereby solving the problem of volatile fatty acids inhibiting hydrogen production in the dark fermentation hydrogen production system and further improving the efficiency of hydrogen production.

[0032] 6. The present invention also adds artificially constructed 2-3.5 mm saline granular sludge to the substrate to improve the activity of microorganisms, further improving their hydrogen production efficiency. In addition, since the increase in salt concentration has a mitigating effect on the decrease in pH, the addition of artificially constructed 2-3.5 mm saline granular sludge can neutralize the impact of microorganisms on the pH in the environment during their survival, further ensuring the continuous and efficient hydrogen production of microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front view of the structure of the present invention;

[0034] Figure 2 It is a front view of the internal structure of the dust cover in the present invention;

[0035] Figure 3 It is a front view of the crushing assembly structure in the present invention;

[0036] Figure 4It is a front view of the screening assembly structure in the present invention;

[0037] Figure 5 For the present invention Figure 4 A magnified view of the structure at inner A;

[0038] Figure 6 It is an enlarged view of the screening component structure in the present invention;

[0039] Figure 7 A top view of the sieve plate structure of the present invention;

[0040] Figure 8 It is a side sectional view of the material dispensing barrel structure in the present invention;

[0041] Fig. 9 A top view of the stirring assembly structure of the present invention;

[0042] Fig.10 For the present invention Fig. 9 Magnified view of the structure at position B.

[0043] In the figure: 1, working frame; 2, supporting plate; 3, shell; 4, crushing box; 5, collecting cylinder; 6, feeding port; 7, motor 1; 8, fixed plate 1; 9, cam; 10, triangular curved rod; 11, fixed plate 2; 12, curved rod 2; 13, curved rod 3; 14, crushing plate; 15, motor 2; 16, crushing plate 2; 17, fixed plate 3; 18, gear ring 2; 19, screening frame; 20, gear ring 1; 21, trapezoidal block; 22, knocking rod; 23, spring 1; 24, limit rod; 25, toggle block; 26 , sliding column one; 27, sliding frame; 28, fixed column one; 29, mounting frame; 30, sieve plate; 31, rotating rod one; 32, dial plate; 33, track block; 34, material distribution barrel; 35, material guide trough; 36, rotating rod two; 37, ladder cover; 38, material tray; 39, shielding cover; 40, stirring rod; 41, cam two; 42, gear two; 43, stirring frame; 44, gear one; 45, gear ring four; 46, slide trough; 47, gear ring three; 48, dust cover; 49, counterweight block; 50, rotating rod three. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] For example, see Figures 1 to 10The present embodiment provides a biohydrogen production device, including a work frame 1, a support plate 2 is provided on the surface of the work frame 1, a material tray 38 is placed on the upper end surface of the support plate 2, the upper end of the work frame 1 is also fixedly connected to a shell 3, and the upper end surface of the shell 3 is fixedly connected to a crushing box 4, a crushing assembly is arranged inside the crushing box 4, the upper end surface of the crushing box 4 is also fixedly connected to a feed port 6, and the upper end surface of the crushing box 4 is also fixedly connected to a dust cover 48, and the crushing assembly includes:

[0046] A fixing plate 8, the upper end surface of the fixing plate 8 is fixedly connected to the inner upper end surface of the dust cover 48, and a motor 7 is also provided on the upper end surface of the crushing box 4, the output end of the motor 7 is rotatably connected to the lower end side surface of the fixing plate 8, and the output end of the motor 7 is also fixedly connected to a cam 9, the lower end of the cam 9 is hinged with a triangular curved rod 10, a corner of the lower end of the triangular curved rod 10 is hinged with a curved rod 2 12, the other end of the curved rod 2 12 is hinged with a fixing plate 2 11, and the surface of the fixing plate 2 11 is fixedly connected to the inner wall of the crushing box 4;

[0047] A curved rod 3 13, one end of which is hinged to the other corner of the lower end of the triangular curved rod 10, and a crushing plate 14 is hinged to the other end of the curved rod 3 13, and a fixed plate 3 17 is hinged to the back of the upper end of the crushing plate 14, and the upper end surface of the fixed plate 3 17 is fixedly connected to the inner upper surface of the crushing box 4, and a crushing plate 2 16 is also arranged opposite to the crushing plate 14, and the back of the crushing plate 2 16 is fixedly connected to the inner wall of the crushing box 4.

[0048] In this embodiment, when using the hydrogen production device, firstly, a large piece of substrate is put into the feed port 6, and then the substrate in the feed port 6 will fall between the crushing plate 14 and the second crushing plate 16, then the motor 1 7 is started, the rotation of the motor 1 7 drives the cam 9 to rotate, and the rotation of the cam 9 will further drive the triangular curved rod 10 to move, and then the crushing plate 14 is driven to move under the action of the second curved rod 12 and the third curved rod 13, and under the action of the fixed plate 3 17, the upper end of the crushing plate 14 moves with a small amplitude, and the lower end moves with a large amplitude, so that the crushing plate 14 and the second crushing plate 16 perform a bite-like action, and the large pieces of substrate between the crushing plate 14 and the second crushing plate 16 are crushed;

[0049] The setting of the crushing component breaks large pieces of substrate into small pieces, so that when the substrate is used, microorganisms can more easily absorb nutrients in the substrate, thereby improving the practicality of the substrate and thus improving the efficiency of biohydrogen production.

[0050] It is worth noting that the present embodiment also includes a screening component, which is disposed in the housing 3 and includes:

[0051] Gear ring 1 20, the inner wall of the housing 3 is fixedly connected with a material distribution barrel 34, the upper end surface of the material distribution barrel 34 is rotatably connected with a screening frame 19, the inner lower end surface of the housing 3 is provided with a motor 2 15, the output end of the motor 2 15 is fixedly connected with the inner wall of the gear ring 1 20, the tooth surface of the gear ring 1 20 is meshedly connected with a gear ring 2 18, the inner wall of the gear ring 2 18 is fixedly connected with the outer surface of the screening frame 19, and a sieve plate 30 is provided inside the screening frame 19;

[0052] A mounting frame 29, the lower end surface of the mounting frame 29 is fixedly connected to the inner upper end surface of the housing 3, the upper surface of the mounting frame 29 is fixedly connected to a fixing column 1 28, the upper end side surface of the fixing column 1 28 is rotatably connected to a gear ring 3 47, the tooth surface of the gear ring 3 47 is meshed with the tooth surface of the gear ring 2 18, the upper end surface of the gear ring 3 47 is fixedly connected to a sliding column 1 26, the surface of the sliding column 1 26 is slidably connected to a sliding frame 27, the upper end surface of the sliding frame 27 is fixedly connected to a toggle block 25, the side surface of the toggle block 25 is slidably connected to the upper inner wall of the mounting frame 29, the upper end surface inner wall of the mounting frame 29 is also fixedly connected to a limiting rod 24, the height of the limiting rod 24 is higher than the toggle block 25;

[0053] A trapezoidal block 21 has an end face provided with a slide groove 46, the groove wall of the slide groove 46 is slidably connected with a knocking rod 22, the surface of the knocking rod 22 also slides through the upper inner wall of the mounting frame 29, the surface of the trapezoidal block 21 is slidably connected with a spring 23, and the other end of the spring 23 is fixedly connected to the upper inner wall of the mounting frame 29.

[0054] In this embodiment, the crushed substrate will fall on the sieve plate 30 in the sieve frame 19. When the substrate agglomerates are small, they will pass through the holes of the sieve plate 30 and fall into the material holding plate 38. When the substrate agglomerates are large, they cannot fall and remain on the sieve plate 30.

[0055] And in the process of screening, the motor 2 15 is started to drive the gear ring 1 20 to rotate, and the rotation of the gear ring 1 20 drives the gear ring 2 18 to rotate, and the rotation of the gear ring 2 18 causes the screening frame 19 to rotate, so that the substrate dropped from the crushing assembly can fall on different sieve plates 30, thereby improving the screening efficiency, and in the process of the rotation of the gear ring 2 18, the gear ring 3 47 is driven to rotate, and the rotation of the gear ring 3 47 drives the sliding column 1 26 eccentrically arranged on its upper end surface to rotate, further causing the sliding column 1 26 to slide in the sliding frame 27, and then under the limiting action of the mounting frame 29 on the toggle block 25, the sliding frame 27 can only reciprocate left and right, and at the same time drive the toggle block 25 to reciprocate left and right, further making this component have the following two motion states:

[0056] First, when the toggle block 25 moves to the left and contacts the trapezoidal block 21, since the trapezoidal block 21 has an inclined surface, the toggle block 25 contacts the trapezoidal block 21 and continues to move to the left, which pushes the trapezoidal block 21 to move upward, and further drives the striking rod 22 to slide in the slide groove 46. When the toggle block 25 completely passes over the trapezoidal block 21, the trapezoidal block 21 falls down under the action of gravity, so that the trapezoidal block 21 returns to its original state.

[0057] Second, when the toggle block 25 moves to the right and contacts the trapezoidal block 21, it will further lift the trapezoidal block 21 to the right and squeeze the spring 1 23. When the inclined surface of the trapezoidal block 21 contacts the limit rod 24, it will move upward until the height of the trapezoidal block 21 is higher than the toggle block 25. Then, the trapezoidal block 21 will lack the restriction of the toggle block 25. After that, the trapezoidal block 21 will be restored under the action of the spring 1 23, and the knocking rod 22 will be driven to knock the outer surface of the sieve frame 19, so that the sieve frame 19 will vibrate, thereby accelerating the screening efficiency of the substrate on the sieve plate 30.

[0058] The setting of the screening component allows the screening frame 19 to rotate so that the substrate dropped from the crushing component can fall on different sieve plates 30, thereby improving the screening efficiency. The screening frame 19 is also struck to vibrate the sieve plates 30, thereby further accelerating the screening efficiency of the substrate on the sieve plates 30. The screening further ensures that the used substrate will not contain large blocks of substrate, thereby improving the living environment of microorganisms and then the activity of microorganisms, thereby improving the efficiency of biological hydrogen production.

[0059] Embodiment 2, based on the above embodiment:

[0060] See also Figure 1 , Figure 6 , Figure 7 and Figure 8 In this embodiment, the cleaning component is arranged in the housing 3, and the cleaning component includes:

[0061] A rotating rod 31, the surface of which rotates and penetrates the surface of the sieve frame 19, and the end surface of the rotating rod 31 is also fixedly connected to the surface of the sieve plate 30, and the end surface of the rotating rod 31 away from the sieve plate 30 is also fixedly connected to a dial plate 32, and a counterweight block 49 is also provided on the upper end surface of one side of the sieve plate 30, and a track block 33 is fixedly connected to the inner upper surface of the housing 3, and inclined surfaces are provided at the head and tail ends of the track block 33, and the upper surface of the track block 33 is slidably connected to the surface of the dial plate 32;

[0062] The material guide groove 35 has its side fixedly connected to the inner wall of the material distribution cylinder 34 , and a collecting cylinder 5 is also arranged below the side of the material guide groove 35 .

[0063] In this embodiment, during the screening process of the screening frame 19, unqualified substrates will accumulate on the surface of the sieve plate 30. Then, since the sieve frame 19 will rotate during the screening process, the paddle plate 32 will be driven to move, and further driven to slide on the track block 33. When the paddle plate 32 moves to the gap of the track block 33, since the paddle plate 32 lacks the support of the track block 33, and a counterweight block is provided on one side of the sieve plate 30, the center of gravity of the sieve plate 30 will be offset, so that the sieve plate 30 rotates, and the unqualified substrates thereon are poured onto the guide trough 35, and then slide from the guide trough 35 into the collecting barrel 5 for the next crushing. Then, as the sieve plate 30 rotates, the paddle plate 32 rotates and contacts the track block 33 again, which will restore the track block 33, thereby restoring the sieve plate 30.

[0064] The cleaning assembly is provided to clean the sieve plate 30 so that unqualified substrates accumulated on the surface of the sieve plate 30 will not block the sieve plate 30, thereby affecting the screening of the substrate, thereby further improving the efficiency of the preparation for biohydrogen production.

[0065] Embodiment 3, based on the above embodiment:

[0066] See also Figure 1 , Figure 8 , Fig. 9 and Fig.10 In this embodiment, the stirring assembly is arranged on the support plate 2, and the stirring assembly includes:

[0067] A rotating rod 36, the upper end surface of the rotating rod 36 is fixedly connected to the lower end surface of the screening frame 19, the surface of the rotating rod 36 rotates to penetrate the upper end surface of the material distribution barrel 34, and the lower end surface of the material distribution barrel 34 is fixedly connected to a step cover 37, the lower end surface of the step cover 37 is fixedly connected to a gear ring 45, and the lower end surface of the rotating rod 36 is also fixedly connected to a stirring frame 43, and the upper end surface of the stirring frame 43 is also fixedly connected to a shielding cover 39, and the surface of the shielding cover 39 is slidably connected to the outer surface of the step cover 37;

[0068] Gear 1 44, the lower end face of gear 1 44 is rotatably connected to the upper end face of the stirring frame 43, the tooth surface of gear 1 44 is meshingly connected to the tooth surface of gear ring 45, the tooth surface of gear 1 44 is also meshingly connected with gear 2 42, the lower end face of gear 2 42 is fixedly connected with rotating rod 3 50, the surface of rotating rod 3 50 rotates and penetrates the upper surface of the stirring frame 43, the lower end face of rotating rod 3 50 is also fixedly connected with cam 2 41, and the lower end face of cam 2 41 is fixedly connected with stirring rod 40.

[0069] In this embodiment, the substrate after the screening component falls on the material tray 38, and then the staff adds Clostridium butyricum and Rhodopseudomonas palustris into the material tray, and then adds artificially constructed 2-3.5 mm saline granular sludge;

[0070] During the screening process of the screening frame 19, the rotating rod 2 36 is rotated to drive the stirring frame 43 to rotate. During the rotation of the stirring frame 43, the gear 1 44 is driven to roll on the tooth surface of the gear ring 45, thereby causing the gear 1 44 to rotate, thereby causing the gear 2 42 to rotate. During the rotation of the gear 2 42, the rotating rod 3 50 is used to drive the cam 2 41 to rotate, thereby driving the stirring rod 40 under the cam 2 41 to rotate to stir the mixture of substrate and microorganisms in the material tray 38;

[0071] The arrangement of the stirring assembly further makes the mixture of the substrate and the microorganisms in the material tray 38 more uniform by stirring the mixture, thereby solving the problem of uneven mixing of the substrate and the microorganisms and further improving the use efficiency of the substrate;

[0072] And by adding Clostridium butyricum and Rhodopseudomonas palustris to the substrate, a dark-light cascade dual-bacteria hydrogen production system is constructed using non-photosynthetic hydrogen-producing bacteria Clostridium butyricum and photosynthetic hydrogen-producing bacteria Rhodopseudomonas palustris. Rhodopseudomonas palustris further metabolizes the volatile fatty acids of the dark fermentation system of Clostridium butyricum to produce hydrogen, thereby solving the problem of volatile fatty acids inhibiting hydrogen production in the dark fermentation hydrogen production system and further improving the efficiency of hydrogen production;

[0073] Artificially constructed 2-3.5mm saline granular sludge is also added to increase the activity of microorganisms, further improving their hydrogen production efficiency. The increase in salt concentration has a mitigating effect on the decrease in pH. The addition of artificially constructed 2-3.5mm saline granular sludge can neutralize the impact of microorganisms on the pH of the environment during their survival, further ensuring the continuous and efficient hydrogen production of microorganisms.

[0074] Working principle: When the biohydrogen production device is used, the following steps are performed:

[0075] S1: First, put the bulk substrate into the feed port 6, and start the motor 7 to crush the bulk substrate;

[0076] S2: Next, the crushed substrate will fall onto the sieve plate 30 in the sieve frame 19. After being screened by the sieve plate 30, qualified substrates will fall onto the material tray 38, and unqualified substrates will be stored on the sieve plate 30;

[0077] S3: The substrate stored on the sieve plate 30 is then cleaned off by the cleaning assembly and dropped into the collecting barrel 5 for next crushing;

[0078] S4: After the substrate in the tray 38 reaches a certain amount, Clostridium butyricum and Rhodopseudomonas palustris are added to the tray, and then artificially constructed 2-3.5 mm saline granular sludge is added, and the substrate and the microorganisms are evenly mixed under the action of the stirring component;

[0079] S5: Finally, the uniformly mixed substrate and microorganism mixture is poured into a fermentation box suitable for the survival of microorganisms for fermentation, and the hydrogen generated by the fermentation in the fermentation box is collected.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biohydrogen production device, comprising a working frame (1), characterized in that: The surface of the working frame (1) is provided with a support plate (2), the upper end surface of the support plate (2) is provided with a material receiving tray (38), the upper end of the working frame (1) is also fixedly connected to a housing (3), and the upper end surface of the housing (3) is fixedly connected to a crushing box (4), a crushing assembly is provided inside the crushing box (4), the upper end surface of the crushing box (4) is also fixedly connected to a feed port (6), and the upper end surface of the crushing box (4) is also fixedly connected to a dust cover (48), and the biohydrogen production device further comprises: A screening component, the screening component is arranged in the housing (3), and the screening component is used to screen the substrate crushed by the crushing component; A cleaning component, the cleaning component is arranged in the housing (3), the cleaning component is linked with the screening component, and the cleaning component is used to clean the substrate remaining on the screening component; A stirring component, wherein the stirring component is arranged on the support plate (2), and the stirring component is used to stir the substrate so that the substrate is distributed more evenly in the material holding tray (38).

2. A biohydrogen production device according to claim 1, characterized in that: The crushing assembly comprises: A fixing plate (8), the upper end surface of the fixing plate (8) being fixedly connected to the inner upper end surface of the dust cover (48), and the upper end surface of the crushing box (4) is also provided with a motor (7), the output end of the motor (7) being rotatably connected to the lower end side surface of the fixing plate (8), the output end of the motor (7) being also fixedly connected to a cam (9), the lower end of the cam (9) being hinged with a triangular curved rod (10), one corner of the lower end of the triangular curved rod (10) being hinged with a curved rod (12), the other end of the curved rod (12) being hinged with a fixing plate (11), the surface of the fixing plate (11) being fixedly connected to the inner wall of the crushing box (4); A curved rod three (13), one end of which is hinged to the other corner of the lower end of the triangular curved rod (10), and the other end of which is hinged to a crushing plate (14), and the upper back surface of the crushing plate (14) is also hinged to a fixed plate three (17), and the upper end surface of the fixed plate three (17) is fixedly connected to the inner upper surface of the crushing box (4), and a crushing plate two (16) is also arranged opposite to the crushing plate (14), and the back surface of the crushing plate two (16) is fixedly connected to the inner wall of the crushing box (4).

3. A biohydrogen production device according to claim 1, characterized in that: The screening assembly comprises: A gear ring (20) is provided, the inner wall of the outer shell (3) is fixedly connected with a material distribution cylinder (34), the upper end surface of the material distribution cylinder (34) is rotatably connected with a screening frame (19), the inner lower end surface of the outer shell (3) is provided with a motor (15), the output end of the motor (15) is fixedly connected with the inner wall of the gear ring (20), the tooth surface of the gear ring (20) is meshingly connected with a gear ring (18), the inner wall of the gear ring (18) is fixedly connected with the outer surface of the screening frame (19), and a sieve plate (30) is provided inside the screening frame (19).

4. A biohydrogen production device according to claim 3, characterized in that: The screening assembly further comprises: A mounting frame (29), wherein the lower end surface of the mounting frame (29) is fixedly connected to the inner upper end surface of the housing (3), the upper surface of the mounting frame (29) is fixedly connected to a fixing column (28), the upper end side surface of the fixing column (28) is rotatably connected to a gear ring (47), the tooth surface of the gear ring (47) is meshed with the tooth surface of the gear ring (18), the upper end surface of the gear ring (47) is fixedly connected to a sliding column (26), the surface of the sliding column (26) is slidably connected to a sliding frame (27), the upper end surface of the sliding frame (27) is fixedly connected to a toggle block (25), the side surface of the toggle block (25) is slidably connected to the upper inner wall of the mounting frame (29), the upper inner wall of the mounting frame (29) is also fixedly connected to a limiting rod (24), the height of the limiting rod (24) is higher than the toggle block (25); A trapezoidal block (21) is provided with a slide groove (46) on the end surface of the trapezoidal block (21), a knocking rod (22) is slidably connected to the groove wall of the slide groove (46), the surface of the knocking rod (22) also slides through the upper inner wall of the mounting frame (29), the surface of the trapezoidal block (21) is slidably connected to a spring 1 (23), and the other end of the spring 1 (23) is fixedly connected to the upper inner wall of the mounting frame (29).

5. A biohydrogen production device according to claim 4, characterized in that: The cleaning component includes: A rotating rod (31), the surface of which rotates and penetrates the surface of the sieve frame (19), and the end surface of which is fixedly connected to the surface of the sieve plate (30), the end surface of which is away from the sieve plate (30) is fixedly connected to a shift plate (32), a counterweight block (49) is provided on the upper end surface of one side of the sieve plate (30), a track block (33) is fixedly connected to the inner upper surface of the outer shell (3), the track block (33) is provided with inclined surfaces at both ends, and the upper surface of the track block (33) is slidably connected to the surface of the shift plate (32).

6. A biohydrogen production device according to claim 5, characterized in that: The cleaning component also includes: A material guide groove (35), the side of which is fixedly connected to the inner wall of the material distribution cylinder (34), and a collecting cylinder (5) is also arranged below the side of the material guide groove (35).

7. A biohydrogen production device according to claim 3, characterized in that: The stirring assembly comprises: A rotating rod (36), the upper end surface of the rotating rod (36) is fixedly connected to the lower end surface of the screening frame (19), the surface of the rotating rod (36) rotates to penetrate the upper end surface of the material distribution barrel (34), and the lower end surface of the material distribution barrel (34) is fixedly connected to a step cover (37), the lower end surface of the step cover (37) is fixedly connected to a gear ring (45), and the lower end surface of the rotating rod (36) is also fixedly connected to a stirring frame (43), and the upper end surface of the stirring frame (43) is also fixedly connected to a shielding cover (39), and the surface of the shielding cover (39) is slidably connected to the outer surface of the step cover (37).

8. A biohydrogen production device according to claim 7, characterized in that: The stirring assembly also includes: Gear 1 (44), the lower end surface of the gear 1 (44) is rotatably connected to the upper end surface of the stirring frame (43), the tooth surface of the gear 1 (44) is meshingly connected to the tooth surface of the gear ring 4 (45), the tooth surface of the gear 1 (44) is also meshingly connected to gear 2 (42), the lower end surface of the gear 2 (42) is fixedly connected to a rotating rod 3 (50), the surface of the rotating rod 3 (50) rotates and penetrates the upper surface of the stirring frame (43), the lower end surface of the rotating rod 3 (50) is also fixedly connected to a cam 2 (41), and the lower end surface of the cam 2 (41) is fixedly connected to the stirring rod (40).

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