Combined fermentation barrel cover and fermentation device

Abstract

The utility model discloses a combined fermenter cover and fermentation device wherein the combined fermenter cover comprises an outer cover and a plurality of inner covers separately arranged on the outer cover, the outer cover is used for covering the opening of a fermenter, the covering areas of the plurality of inner covers are different, and the inner covers are arranged on the outer cover. The combined fermenter cover further comprises a plurality of inner cover holes in one-to-one correspondence with the covering areas of the inner covers, the inner cover holes are formed in the outer cover or the inner covers larger than the inner cover holes in area, and one of the inner cover holes and the corresponding inner covers is provided with a limiting groove. And the inner cover is axially limited relative to the inner cover hole through the clamping matching of the limiting block and the limiting groove. According to the combined fermenter cover provided by the utility model, openings with different areas can be exposed by opening different inner covers, different openings are opened corresponding to different operations, the combined fermenter cover is adaptive to tools with different sizes, the use convenience is effectively improved, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation equipment, in particular to a combined fermentation barrel cover and a fermentation device. Background Art

[0002] As people's living standards and quality of life continue to improve, domestic waste is increasing, which can easily lead to a decline in environmental quality or ecological imbalance, so garbage disposal operations have become particularly important. At present, for wet garbage in domestic garbage, such as food waste and other kitchen waste, in addition to digging pits for landfill treatment, there is a more efficient treatment method, which is to put it into a fermentation tank for fermentation, which effectively avoids the pollution of the atmosphere and water sources caused by landfill treatment, and can also prepare environmentally friendly fertilizers through the fermentation process, realizing the recycling of garbage from waste to treasure.

[0003] In order to improve the convenience of use, the existing fermentation tank cover is generally composed of an outer cover and an inner cover. For example, the fermentation device and fermentation tank cover provided by Chinese utility model patent CN218262312U have a filling hole on the outer cover and an inner cover on the filling hole. When putting in large quantities of garbage or transporting fertilizer, the outer cover can be directly opened, while when putting in a small amount of garbage on a daily basis, only the inner cover needs to be opened to expose the filling hole with a smaller diameter. However, the fermentation tank cover can only realize two sizes of openings, which limits its applicability. Utility Model Content

[0004] The utility model primarily provides a combined fermentation barrel cover to solve the technical problem that the existing fermentation tank cover has poor applicability.

[0005] The utility model also provides a fermentation device, which adopts the combined fermentation barrel cover.

[0006] According to one aspect of the utility model, a combined fermentation barrel cover is provided, comprising an outer cover and a plurality of inner covers respectively arranged on the outer cover, the outer cover being used to cover the barrel mouth of the fermentation barrel, the covering areas of the plurality of inner covers being different, the combined fermentation barrel cover also comprising a plurality of inner cover holes arranged in one-to-one correspondence with the covering areas of the plurality of inner covers, the inner cover holes being opened on the outer cover or on an inner cover having a larger area relative to the inner cover holes, one of the inner cover holes and the corresponding inner cover being opened with a limiting groove, the other being provided with a limiting block embedded in the limiting groove, the inner cover being axially limited relative to the inner cover hole by the snap-fitting of the limiting block and the limiting groove.

[0007] Preferably, the plurality of inner covers are coaxially arranged relative to the outer cover.

[0008] Preferably, the combined fermentation barrel cover further comprises a convex lens installed on the outer cover and / or the inner cover, and the convex lens is used to focus sunlight into the fermentation barrel to increase the internal temperature of the fermentation barrel.

[0009] Preferably, a plurality of convex lenses are provided, and the plurality of convex lenses are arranged at intervals around the edge of the outer cover and are arranged with their focusing directions tilted toward the central axis of the outer cover, and the focal points of the plurality of convex lenses are mutually staggered.

[0010] Preferably, the inner cover hole is configured as a tapered hole with a diameter gradually decreasing in a downward direction, and the side wall of the inner cover is configured as an inclined surface adapted to the tapered hole.

[0011] Preferably, a handle groove is provided on the top surface of the outer cover and / or the inner cover, and the combined fermentation barrel cover further comprises a handle which is provided in the handle groove and can be flipped to be exposed outside the handle groove.

[0012] Preferably, the combined fermentation barrel cover also includes a connecting component, a connecting hole is provided in the handle groove, the connecting component is detachably mounted on the connecting hole, a hinge hole is provided in the section of the connecting component located in the handle groove, the handle is inserted into the hinge hole and is used to flip along the hinge hole.

[0013] Preferably, the bottom surface of the outer cover and / or the inner cover is provided with reinforcing ribs.

[0014] According to the second aspect of the utility model, a fermentation device is also provided, comprising a fermentation barrel and the above-mentioned combined fermentation barrel cover, wherein the combined fermentation barrel cover is arranged on the barrel mouth of the fermentation barrel.

[0015] Preferably, the fermentation device also includes a water inlet pipe and an overflow pipe, the water inlet pipe is arranged at the bottom of the fermentation barrel and is used to inject clean water into the fermentation barrel, and the overflow pipe is arranged at the top of the fermentation barrel and is used to discharge the fermentation liquid on the top of the fermentation barrel by overflow after clean water is injected into the bottom of the fermentation barrel.

[0016] The utility model has the following beneficial effects:

[0017] The combined fermentation barrel cover provided by the utility model includes an outer cover and a plurality of inner covers separately arranged on the outer cover. Since the covering areas of the plurality of inner covers are different, opening different inner covers can reveal openings of different areas, which is convenient for implementing different operations such as placing garbage, salvaging garbage, salvaging fermentation liquid or cleaning the fermentation chamber. Openings of different areas are opened corresponding to different operations, and tools of different sizes are adapted to effectively improve the convenience of use and the applicability. Secondly, the axial limitation of the inner cover can be achieved by the mutual engagement and cooperation of the step surfaces of the limiting block and the limiting groove, so as to limit and fix the edge of the inner cover. Compared with the use of complex limiting structures such as buckles and threads, it will not affect the convenience of opening and closing the inner cover, so that the inner cover can be directly lifted and pulled to open and close vertically, and at the same time, the edge of the inner cover in the covering state is effectively prevented from turning down or up relative to the outer cover, thereby preventing people or other foreign objects from falling into the fermentation barrel. The limiting structure is simple and efficient, ensuring the convenience of use and improving safety.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A three-dimensional diagram of a fermentation device provided in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 An exploded view of the fermentation apparatus shown;

[0022] Figure 3 A reference diagram of the use state of the overflow pipe in the fermentation device provided by the embodiment of the utility model;

[0023] Figure 4 A three-dimensional diagram of a combined fermentation barrel cover in a fermentation device provided in an embodiment of the utility model;

[0024] Figure 5 for Figure 4 An exploded view of the modular fermentation barrel cover shown;

[0025] Figure 6 for Figure 4 A three-dimensional view of one of the inner covers of the combined fermentation barrel cover shown along another angle;

[0026] Figure 7 This is an assembly structure diagram of the handle and connecting components in the combined fermentation barrel cover provided in an embodiment of the utility model.

[0027] Legend:

[0028] 1000. Fermentation device; 1. Fermentation barrel; 11. Fermentation chamber; 12. Overflow hole; 2. Water inlet pipe; 21. One-way nozzle; 22. Filter; 3. Overflow pipe; 31. Pipe joint; 32. Sealing ring; 33. Sealing plate; 4. Flow path switching unit; 5. Drain pump; 6. Water inlet pump; 7. Combined fermentation barrel cover; 71. Outer cover; 72. Inner cover; 721. Limit block; 73. Inner cover hole; 731. Limit groove; 74. Convex lens; 75. Handle groove; 751. Connecting hole; 76. Handle; 77. Connecting assembly; 771. Screw; 772. Connecting ring; 7721. Hinge hole; 78. Reinforcement rib. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0030] Figures 1 to 7 The combined fermentation barrel cover and the fermentation device provided by the embodiment of the utility model are collectively shown, wherein the combined fermentation barrel cover is used to movably cover the fermentation barrel of the fermentation device, and the fermented material can be conveniently put into or taken out of the fermentation barrel by opening and closing the combined fermentation barrel cover.

[0031] Please combine Figure 4 and Figure 5 The combined fermentation barrel cover 7 includes an outer cover 71 and a plurality of inner covers 72 respectively arranged on the outer cover 71. The outer cover 71 is used to cover the barrel mouth of the fermentation barrel 1, that is, the outer cover 71 is used to cover the top opening of the fermentation chamber 11 of the fermentation barrel 1, and the covering areas of the plurality of inner covers 72 are different.

[0032] Further, the combined fermentation barrel cover 7 also includes a plurality of inner cover holes 73 arranged in one-to-one correspondence with the covering areas of the plurality of inner covers 72, the inner cover holes 73 are opened on the outer cover 71 or opened on the inner cover 72 with a larger area relative to the inner cover holes 73, and the inner covers 72 are covered on the inner cover holes 73 in one-to-one correspondence. For example, when the plurality of inner covers 72 include a first inner cover and a second inner cover with successively decreasing covering areas, the inner cover hole 73 of the first inner cover with the largest covering area is opened on the outer cover 71, and the inner cover hole 73 of the second inner cover with a smaller covering area is opened on the outer cover 71 and located on one side of the inner cover hole 73 of the first inner cover, or the inner cover hole 73 of the second inner cover is opened on the first inner cover, so that the first inner cover and the second inner cover are arranged side by side or nested with each other. Similarly, when there are more than two inner covers 72, two of the inner covers 72 with similar covering areas can be arranged side by side or nested with each other.

[0033] The combined fermentation barrel cover 7 includes an outer cover 71 and a plurality of inner covers 72 which are separately arranged on the outer cover 71. Since the covering areas of the plurality of inner covers 72 are different, openings of different areas can be exposed by opening different inner covers 72, so as to facilitate different operations such as throwing garbage, salvaging garbage, salvaging fermentation liquid or cleaning the fermentation chamber. Openings of different areas are opened for different operations, and tools of different sizes are adapted, so as to effectively improve the convenience of use and improve the applicability.

[0034] Please combine Figure 5 and Figure 6 The inner wall of the inner cover hole 73 is provided with a limiting groove 731, and the side wall of the inner cover 72 is provided with a limiting block 721 adapted to the limiting groove 731. The inner cover 72 is axially limited relative to the inner cover hole 73 by the clamping fit between the limiting block 721 and the limiting groove 731. The axial limit of the inner cover 72 can be achieved by the clamping fit between the step surfaces of the limiting block 721 and the limiting groove 731, so that the edge of the inner cover 72 is limited and fixed. Compared with the use of complex limiting structures such as buckles and threads, the convenience of opening and closing of the inner cover 72 is not affected, so that the inner cover 72 can be directly lifted and opened and closed along the vertical direction, and at the same time, the edge of the inner cover 72 in the closed state is effectively prevented from turning down or up relative to the inner cover hole 73, thereby preventing people or other foreign objects from falling into the fermentation chamber 11. The limiting structure is simple and efficient, ensuring the convenience of use and improving safety.

[0035] Preferably, there are multiple limit grooves 731, and the multiple limit grooves 731 are equidistantly arranged around the inner cover hole 73, and the number of the limit blocks 721 is equal to or less than the number of the limit grooves 731, so that each of the limit blocks 112 can be embedded in one of the limit grooves 731 to improve the limiting effect, and the convenience of the closing operation of the inner cover 72 is improved by the multiple limit grooves 731 axially symmetrically arranged along the axis of the inner cover hole 73, so that the inner cover 72 can adapt to the inner cover hole 73 and complete the closing action without rotating too large an angle.

[0036] More preferably, the number of the limit blocks 721 is equal to the number of the limit slots 731, so that the limit blocks 721 and the limit slots 731 are arranged in a one-to-one correspondence, so that each of the limit slots 731 can be snap-fitted with the corresponding limit block 721, further improving the limiting effect, so that different edge positions of the inner cover 72 can be limited and fixed.

[0037] In this embodiment, three limiting grooves 731 are provided on a single inner cover hole 73, and three limiting blocks 721 are provided on a single inner cover 72, so that the angles between two adjacent limiting grooves 731 and two adjacent limiting blocks 721 relative to the axis of the inner cover hole 73 are both 120 degrees, thereby stably fixing the inner cover 72. When there are only two limiting grooves 731 on a single inner cover hole 73, the angle between the two limiting grooves 731 must be greater than or equal to 180 degrees, resulting in at least one side of the inner cover 72 being unable to be stably fixed, and there is still a risk of flipping; and when there are more than three limiting grooves 731 on a single inner cover hole 73, the structures of the outer cover 71 and the inner cover 72 will be too complicated, the manufacturing cost will be high, and the structural strength of the outer cover 71 and the inner cover 72 will be reduced.

[0038] In other embodiments, the limiting groove 731 may also be opened on the side wall of the inner cover 72, and correspondingly, the limiting block 721 is arranged on the inner wall of the inner cover hole 73. When the inner cover 72 is covered on the inner cover hole 73, the limiting block 721 is clamped and sleeved through the limiting groove 731, which can also achieve axial limitation of the inner cover 72 relative to the outer cover 71.

[0039] Furthermore, the side walls of the inner cover 72 may be provided with the limiting groove 731 and the limiting block 721 at the same time, and the corresponding limiting block 721 and limiting groove 731 may be provided on the inner wall of the inner cover hole 73. When the inner cover 72 is covered on the inner cover hole 73, the limiting block 721 on the inner cover 72 is embedded in the limiting groove 731 on the inner cover hole 73, and the limiting block 721 on the inner cover hole 73 is embedded in the limiting groove 731 on the inner cover 72, which can further enhance the limiting and fixing effect and improve the stability of the inner cover 72.

[0040] Furthermore, the limiting groove 731 is arranged close to the top end of the inner cover hole 73, or close to the bottom end of the inner cover hole 73, or arranged in the middle of the inner cover hole 73 to adapt to different cover plate structures.

[0041] Furthermore, the limiting groove 731 adopts a block-shaped short groove or a strip-shaped long groove, or the limiting groove 731 is set to a full-ring structure, which can not only play a limiting and positioning role, but also realize multiple sealing of the inner cover 72 relative to the inner cover hole 721.

[0042] Please combine Figure 4 and Figure 5Preferably, multiple inner covers 72 are coaxially arranged relative to the outer cover 71, that is, multiple inner covers 72 are nested in sequence from large to small in area, so that the inner cover holes 73 corresponding to each inner cover 72 are located on the central axis of the outer cover 71, and the opening exposed by opening any inner cover 72 is located at the center of the outer cover 71, which is convenient for positioning and improves ease of use.

[0043] Preferably, the combined fermentation barrel cover 7 further includes a convex lens 74, which is mounted on the outer cover 71 and / or the inner cover 72, and is used to focus sunlight into the fermentation chamber 11 to increase the internal temperature of the fermentation chamber 11. The internal temperature of the fermentation chamber 11 is increased by the focusing effect of the convex lens 74, which is more conducive to the fermentation operation, effectively improves the fermentation efficiency and fermentation effect, and the heating structure is simple and efficient, and no additional heating energy is required.

[0044] Preferably, there are multiple convex lenses 74, which are arranged at intervals around the edge of the outer cover 71 and are arranged with the focusing direction tilted toward the central axis of the outer cover 71, and the focal points of the multiple convex lenses 74 are mutually staggered. The multiple convex lenses 74 gather heat toward the center of the fermentation chamber 11, which effectively improves the heating effect, and since the focal points of the multiple convex lenses 74 are mutually staggered, the direct overlap of the focal points of the multiple convex lenses 74 to avoid the risk of burning inside the fermentation chamber 11.

[0045] Preferably, the inner cover hole 73 is configured as a tapered hole with a diameter gradually decreasing in the downward direction, so that the radial dimension of the inner cover hole 73 opening toward the bottom surface of the outer cover 71 is smaller than the radial dimension of the inner cover hole 73 opening toward the top surface of the outer cover 71, and the side wall of the inner cover 72 is configured as a conical surface structure adapted to the tapered hole, and the conical surface structure and the tapered hole are limited and fixed to facilitate the introduction of the inner cover 72 into the inner cover hole 73, and the inner cover 72 can be prevented from falling.

[0046] More preferably, the inner cover hole 73 also includes a limiting hole (not shown in the figure, the same below) provided at one end of the conical hole facing the top surface of the outer cover 71, and the maximum diameter of the limiting hole is larger than the maximum diameter of the conical hole, so that the limiting hole and the conical hole together constitute a step hole, and the side edge of the inner cover 72 is provided with a limiting step (not shown in the figure, the same below) embedded in the limiting hole, and the stability of the inner cover 72 is further improved by the limiting fixation between the limiting step and the limiting hole.

[0047] Preferably, the cross-sections of the outer cover 71 and the inner cover 72 along the axial direction are both circular, that is, the outer cover 71 and the inner cover 72 are both configured as circular cover plates, so as to diffuse the pressure to the surroundings when subjected to force, thereby ensuring uniform force, being less likely to cause cracking and collapse, and being easy to cover without the need for position calibration and not prone to tilting and falling.

[0048] It should be understood that in other embodiments, the cross-section of the outer cover 71 and the inner cover 72 along the axial direction can also be set to a rectangle, or other polygons such as a triangle, pentagon, hexagon, etc., to meet different usage requirements, adapt to more application scenarios, ensure practicality while making the appearance more beautiful and generous.

[0049] Please combine Figure 5 and Figure 7 A handle groove 75 is provided on the top surface of the outer cover 71 and / or the inner cover 72, and the combined fermentation barrel cover 7 also includes a handle 76 installed in the handle groove 75, and the handle 76 is used to expose at least part of the structure outside the handle groove 75 after flipping, so that the outer cover 71 and / or the inner cover 72 can be lifted by the handle 76, and the handle 76 can be flipped and hidden in the handle groove 75 in daily state to prevent the handle 76 from protruding from the top surface of the outer cover 71 and / or the inner cover 72.

[0050] Furthermore, the combined fermentation barrel cover 7 also includes a connecting component 77, a connecting hole 751 is opened in the handle groove 75, and the connecting component 77 is detachably installed on the connecting hole 751. The section of the connecting component 77 located in the handle groove 75 is opened with a hinge hole 7721, and the handle 76 is passed through the hinge hole 7721 and is used for flipping along the hinge hole 7721. The connection structure is simple and efficient, and there is no need to use hinge accessories.

[0051] Specifically, the connecting assembly 77 includes a screw rod 771 and a connecting ring 772, the connecting hole 751 is set as a threaded hole, one end of the screw rod 771 is threadedly connected to the threaded hole, the connecting ring 772 is arranged at the other end of the screw rod 771, the inner hole of the connecting ring 772 is set as the hinge hole 7721, and the handle 76 adopts a circular ring structure passed through the hinge hole 7721, the structure is simple, and the disassembly and assembly are convenient and quick.

[0052] Preferably, the connecting hole 751 is configured as a through hole penetrating the outer cover 71 and / or the inner cover 72, and the connecting hole 751 can be formed into an air vent of the fermentation chamber 11 by removing the connecting assembly 77 and the handle 76 to facilitate ventilation.

[0053] In other embodiments, the connecting hole 751 can also be set as a light hole that passes through the outer cover 71 and / or the inner cover 72, and the connecting assembly 77 also includes a nut. After the screw rod 771 passes through the light hole, it is tightened and fixed by the nut, so that the screw rod 771 can be rotated and adjusted to any direction in the connecting hole 751 before being locked and fixed, thereby facilitating the adjustment of the orientation of the connecting ring 772 and further facilitating the installation of the handle 76.

[0054] like Figure 6 As shown, the bottom surface of the outer cover 71 and / or the inner cover 72 is provided with reinforcing ribs 78, and the reinforcing ribs 78 are arranged in a "well" shape. The structural strength of the outer cover 71 and / or the inner cover 72 is improved by the reinforcing ribs 78 to prevent the outer cover 71 and / or the inner cover 72 from bending and collapsing.

[0055] Furthermore, a fixing edge extending axially downwardly along the outer cover 71 is provided at the bottom of the outer cover 71 , and the fixing edge is used to be fixed on the barrel mouth of the fermentation barrel 1 to improve the stability of the outer cover 71 relative to the fermentation barrel 1 .

[0056] Furthermore, the outer edge of the outer cover 71 may also be provided with the limiting groove 731 and / or the limiting block 721. By snapping together the limiting groove 731 and / or the limiting block 721 on the outer edge of the outer cover 71 with respect to the limiting structure preset at the barrel mouth of the fermentation barrel 1, the axial limitation of the outer cover 71 relative to the fermentation barrel 1 can also be achieved, thereby preventing the outer cover 71 from flipping over.

[0057] like Figure 1 As shown, as a second aspect, the embodiment of the utility model further provides a fermentation device 1000, comprising a fermentation barrel 1 and the above-mentioned combined fermentation barrel cover 7, wherein the fermentation barrel 1 is provided with a fermentation chamber 11, wherein the fermentation chamber 11 is used to ferment wet domestic garbage into fertilizer, and the combined fermentation barrel cover 7 is used to cover the top opening of the fermentation chamber 11. By opening and closing different inner covers 72, the fermentation chamber 11 can expose openings of different areas to meet different usage requirements.

[0058] Preferably, the fermentation device 1000 also includes a water inlet pipe 2 and an overflow pipe 3, the water inlet pipe 2 is connected to the bottom of the fermentation chamber 11 and is used to inject clean water into the fermentation chamber 11, and the overflow pipe 3 is connected to the top of the fermentation chamber 11 and is used to discharge the fermentation liquid at the top of the fermentation chamber 11 through overflow after clean water is injected into the bottom of the fermentation chamber 11.

[0059] Specifically, in the fermentation device 1000, a water inlet pipe 2 is provided at the bottom of the fermentation barrel 1, and an overflow pipe 3 is provided at the top of the fermentation barrel 1. Clean water is injected into the bottom of the fermentation chamber 11 through the water inlet pipe 2, so that the fermented liquid in the fermentation chamber 11 can float to the setting height of the overflow pipe 3 and be automatically discharged along the overflow pipe 3, thereby realizing upward drainage, without the need to manually open the cover to salvage the fermented liquid, reducing odor pollution, and the drainage structure is simple and efficient. Clean water can also be added to the fermentation chamber 11 to realize the next round of fermentation operation, and at the same time, the solid fermented product in the fermentation chamber 11 can be driven to float to the barrel mouth position for easy salvage. Moreover, compared with the downward drainage method, the solid fermented product will not block the drainage pipe under its gravity, and there is no need to set a complex filtering structure. More importantly, this drainage method is more convenient for burying the fermentation barrel 1 underground, and only an external water pipe is required on the water inlet pipe 2. The fermentation barrel 1 can be buried at any position, which is convenient for fermenting domestic garbage into fertilizer and realizing garbage into treasure.

[0060] Please combine Figure 2 An overflow hole 12 is provided on the fermentation barrel 1, and the overflow pipe 3 includes a pipe joint 31 and a sealing ring 32. The first end of the pipe joint 31 is located in the fermentation chamber 11, and the second end of the pipe joint 31 passes through the fermentation chamber 11 along the overflow hole 12. The sealing ring 32 is sleeved on the first end of the pipe joint 31 and is used to abut against the inner wall of the fermentation barrel 1, thereby sealing the gap between the pipe joint 31 and the overflow hole 12 through the sealing ring 32.

[0061] It should be understood that the sealing ring 32 is made of flexible materials such as rubber and silicone, and the outer diameter of the sealing ring 32 is larger than the outer diameter of the pipe joint 31, so that the gap between the pipe joint 31 and the overflow hole 12 is blocked by the sealing ring 32. Moreover, since the sealing ring 32 is arranged in the fermentation chamber 11, when the fermentation chamber 11 discharges the fermentation liquid through the overflow pipe 3, the sealing ring 32 can be pressed against the inner wall of the fermentation barrel 1 by the squeezing force of the fermentation liquid, thereby effectively enhancing the sealing effect.

[0062] like Figure 3 As shown, preferably, the overflow pipe 3 also includes a sealing plate 33 hinged to the pipe joint 31, and the sealing plate 33 is used to seal the pipe joint 31 under the action of its own gravity. The sealing plate 33 is also used to flip open relative to the pipe joint 31 under the pushing action of the liquid or gas in the fermentation chamber 11, thereby connecting the pipe joint 31.

[0063] Specifically, the sealing plate 33 is hinged with the pipe joint 31 and can be flipped relative to the pipe joint 31 to close the pipe joint 31 or open the pipe joint 31. During the fermentation operation, the sealing plate 33 is driven by its own gravity to automatically block the pipe joint 31, thereby sealing the fermentation chamber 11 and improving the fermentation effect. When the air pressure in the fermentation chamber 11 is too high, the sealing plate 33 can be automatically pushed open by the air pressure force to achieve automatic pressure relief, thereby avoiding the risk of biogas explosion. Secondly, when clean water is injected into the fermentation chamber 11 through the water inlet pipe 2 and the fermented liquid in the fermentation chamber 11 floats to the set height of the overflow pipe 3, the sealing plate 33 can also be automatically pushed open by the water pressure force to achieve automatic drainage. The structure of automatic drainage and automatic pressure relief is simple and efficient, and there is no need to set up precision sensors and valves. It is low in cost and has strong applicability.

[0064] Furthermore, the sealing plate 33 is arranged at the second end of the pipe joint 31, and the sealing plate 33 is used to abut the end face of the pipe joint 31 and seal the port of the second end of the pipe joint 31, so that the one-way non-return effect of the sealing plate 33 is realized through the end face of the pipe joint 31, so that the sealing plate 33 cannot be flipped open from the outside toward the inside of the fermentation chamber 11, and can only be flipped open from the inside of the fermentation chamber 11 toward the outside, thereby effectively preventing external liquid or gas from entering the fermentation chamber 11 along the overflow pipe 3.

[0065] Preferably, the second end of the pipe joint 31 is tilted so that the sealing plate 33 is tilted to cover the pipe joint 31 , and the sealing plate 33 is pressed down by its own weight to seal the pipe joint 31 , resulting in a better sealing effect.

[0066] like Figure 2 As shown, preferably, the fermentation device 1000 also includes a flow switching unit 4 and a drainage pump 5, the first port of the flow switching unit 4 is connected to the water inlet pipe 2, the second port of the flow switching unit 4 is used for an external water source, the third port of the flow switching unit 4 is connected to the drainage pump 5, the first port of the flow switching unit 4 is conductive relative to the second port and / or the third port, and the drainage pump 5 is used to extract the liquid in the fermentation chamber 11 through the water inlet pipe 2.

[0067] In this embodiment, the flow path switching unit 4 is a three-way joint, that is, its first port, second port and third port are mutually conductive, and clean water can be injected into the water inlet pipe 2 on the first port through the second port, and the liquid in the water inlet pipe 2 on the first port can be pumped out through the drainage pump 5 on the third port. The water inlet pipe 2 is used to respectively realize water inlet and water pumping, and the structure is simple and efficient. There is no need to set multiple sets of pipes in the fermentation chamber 11, so that the internal space of the fermentation chamber 11 can be efficiently utilized, and the fermentation effect is improved. Specifically, the water inlet pipe 2 is used to inject clean water into the fermentation chamber 11 and discharge the fermented liquid along the overflow pipe 3. When the fermented liquid is basically discharged and the solid fermented product is salvaged, the liquid in the fermentation chamber 11 can be pumped out through the drainage pump 5. At this time, the liquid in the fermentation chamber 11 is basically clean water, and the liquid in the fermentation chamber 11 can be pumped out without setting a complex filtering structure, and then the fermentation chamber 11 is emptied, which is convenient for cleaning the fermentation barrel 1 to replace different fermented products and meet different fermentation needs.

[0068] Secondly, after clean water is injected into the fermentation chamber 11 through the water inlet pipe 2 to fill the fermentation chamber 11 with liquid, part of the liquid in the fermentation chamber 11 can be pumped out through the drainage pump 5 to reduce the liquid level in the fermentation chamber 11 to a standard water level that meets the fermentation requirements. The standard water level is usually 10% to 30% of the height of the fermentation chamber 11, which is convenient for the next round of fermentation operations.

[0069] In other embodiments, the flow path switching unit 4 may further include a three-way solenoid valve (not shown, the same below), and the three-way solenoid valve is used to replace the three-way connector, and the three-way solenoid valve is used to switchably connect the first port and the second port of the flow path switching unit 4, or connect the first port and the third port of the flow path switching unit. Thus, the third port can be closed when water is inlet, and the second port can be closed when water is drained, so as to avoid direct connection between clean water and fermentation liquid to cause pollution.

[0070] Preferably, a water guiding cavity is opened inside the water inlet pipe 2 along its axial direction, and the water guiding cavity is connected to the first port of the flow path switching unit 4 and is used to introduce clean water. A one-way nozzle 21 connected to the water guiding cavity is provided on the side wall of the water inlet pipe 2, and the one-way nozzle 21 is used to spray the clean water in the water guiding cavity into the fermentation cavity 11 and prevent the liquid in the fermentation cavity 11 from reversely entering the water guiding cavity, that is, a one-way valve is provided in the one-way nozzle 21, and the one-way valve allows the liquid to flow along the water guiding cavity toward the fermentation cavity 11, and prevents the liquid from flowing along the fermentation cavity 11 toward the water guiding cavity, thereby preventing the fermented material from entering and clogging the one-way nozzle 21 while introducing clean water by using the one-way nozzle 21.

[0071] Furthermore, a drainage hole connected to the water guide cavity is provided at the end of the water inlet pipe 2, the caliber of the drainage hole is larger than the caliber of the one-way nozzle 21, and a filter screen 22 is provided on the drainage hole, and the drainage hole is used to extract the liquid in the fermentation cavity 11 under the action of the drainage pump 5. Draining water through a drainage hole with a larger caliber can improve drainage efficiency and avoid blockage, and since the drainage hole is arranged along the extension direction of the water guide cavity, there is no corner structure, and drainage is smoother. In addition, since the drainage hole is arranged at the end of the water inlet pipe 2, when water enters through the water guide cavity, most of the clean water in the water guide cavity can be directly sprayed out along the one-way nozzle 21, and the remaining clean water can enter the end of the water inlet pipe 2 and be discharged along the drainage hole, further improving the water intake effect.

[0072] Furthermore, a plurality of one-way nozzles 21 are arranged at intervals along the length direction of the water inlet pipe 2 to achieve water inlet at multiple points through the plurality of one-way nozzles 21, thereby improving water inlet efficiency and preventing a certain point from being blocked by solid fermentation products and affecting normal water inlet.

[0073] Preferably, the fermentation device 1000 further comprises a water inlet pump 6, the water inlet end of the water inlet pump 6 is used to be connected to a water source, and the water outlet end of the water inlet pump 6 is connected to the second port of the flow path switching unit 4. Water is introduced through the water inlet pump 6 to increase the water inlet flow rate and water pressure, so that the solid fermentation material can be dispersed and the fermentation liquid is driven to float to the setting height of the overflow pipe 3.

[0074] Preferably, the first port and the second port of the flow path switching unit 4 are arranged in a straight line and in the horizontal direction, and the third port of the flow path switching unit 4 is arranged to extend vertically upward. Since the first port and the second port of the flow path switching unit 4 are arranged in a straight line and in the horizontal direction, water inflow is smoother and blockage is avoided. More importantly, since the third port of the flow path switching unit 4 is arranged to extend vertically upward, water is drained vertically upward, effectively reducing the risk of foreign matter entering the drainage pump 5 during drainage.

[0075] It should be understood that in other embodiments, the drainage pump 5 and the water inlet pump 6 can be replaced by manual valves. When the automatic drainage and fermentation device 1000 is directly placed on the ground for use, drainage or water inlet can be opened through manual valves. The structure is simple and the cost is low. No external power supply is required and the applicability is strong.

[0076] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A combined fermentation barrel cover, characterized in that: The combined fermentation barrel cover comprises an outer cover (71) and a plurality of inner covers (72) which are arranged on the outer cover (71), wherein the outer cover (71) is used to cover the barrel mouth of a fermentation barrel (1), and the covering areas of the plurality of inner covers (72) are different. The combined fermentation barrel cover further comprises a plurality of inner cover holes (73) which are arranged in a one-to-one correspondence with the covering areas of the plurality of inner covers (72), wherein the inner cover holes (73) are arranged on the outer cover (71) or on an inner cover (72) which has a larger area than the inner cover holes (73), wherein one of the inner cover holes (73) and the corresponding inner cover (72) is provided with a limiting groove (731), and the other is provided with a limiting block (721) which is embedded in the limiting groove (731), and the inner cover (72) is axially limited relative to the inner cover hole (73) by the snap-fitting between the limiting block (721) and the limiting groove (731).

2. The combined fermentation barrel cover according to claim 1, characterized in that: The plurality of inner covers (72) are coaxially arranged relative to the outer cover (71).

3. The combined fermentation barrel cover according to claim 1, characterized in that: The combined fermentation barrel cover also includes a convex lens (74) installed on the outer cover (71) and / or the inner cover (72), and the convex lens (74) is used to focus sunlight into the fermentation barrel (1) to increase the internal temperature of the fermentation barrel (1).

4. The combined fermentation barrel cover according to claim 3, characterized in that: A plurality of convex lenses (74) are provided, and the plurality of convex lenses (74) are arranged at intervals around the edge of the outer cover (71) and are arranged with their focusing directions tilted toward the central axis of the outer cover (71), and the focal points of the plurality of convex lenses (74) are mutually staggered.

5. The combined fermentation barrel cover according to claim 1, characterized in that: The inner cover hole (73) is configured as a tapered hole with a diameter gradually decreasing in the downward direction, and the side wall of the inner cover (72) is configured as an inclined surface adapted to the tapered hole.

6. The combined fermentation barrel cover according to claim 1, characterized in that: A handle groove (75) is provided on the top surface of the outer cover (71) and / or the inner cover (72), and the combined fermentation barrel cover also includes a handle (76) which is arranged in the handle groove (75) and can be flipped to be exposed outside the handle groove (75).

7. The combined fermentation barrel cover according to claim 6, characterized in that: The combined fermentation barrel cover also includes a connecting component (77), a connecting hole (751) is provided in the handle groove (75), the connecting component (77) is detachably mounted on the connecting hole (751), a section of the connecting component (77) located in the handle groove (75) is provided with a hinge hole (7721), and the handle (76) is inserted into the hinge hole (7721) and is used to flip along the hinge hole (7721).

8. The combined fermentation barrel cover according to claim 1, characterized in that: The bottom surface of the outer cover (71) and / or the inner cover (72) is provided with reinforcing ribs (78).

9. A fermentation device, comprising a fermentation tank (1), characterized in that: The fermentation device further comprises a combined fermentation barrel cover as described in any one of claims 1 to 8, wherein the combined fermentation barrel cover is arranged on the barrel opening of the fermentation barrel (1).

10. The fermentation device according to claim 9, characterized in that: The fermentation device further comprises a water inlet pipe (2) and an overflow pipe (3), wherein the water inlet pipe (2) is arranged at the bottom of the fermentation barrel (1) and is used to inject clean water into the fermentation barrel (1), and the overflow pipe (3) is arranged at the top of the fermentation barrel (1) and is used to discharge the fermented liquid at the top of the fermentation barrel (1) by overflow after clean water is injected into the bottom of the fermentation barrel (1).

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