Anti-scum crusting device for biogas production

Abstract

The invention relates to a scum crusting prevention device for biogas production, which effectively solves the problem that scum crusting is easy to occur during biogas production. Comprising a fermentation tank, a rotatable rotating shaft is coaxially arranged in the fermentation tank, a moving cylinder is coaxially and slidably connected to the upper side of the rotating shaft, a plurality of containing grooves evenly distributed in the circumferential direction of the moving cylinder are formed in the outer surface of the moving cylinder, crushing blades are hinged to the interiors of the containing grooves, inclined swing rods are arranged at the lower ends of the crushing blades, and swing grooves are formed in the swing rods; the upper end of the fermentation tank is provided with a plurality of fixing rods which are in one-to-one correspondence with the swing rods and located on the inner sides of the swing rods, the fixing rods are inserted into the containing grooves, the lower ends of the fixing rods are provided with lifting columns inserted into the swing grooves in the corresponding sides, the upper side wall of the fermentation tank is provided with guide columns inserted into the movable cylinder, and the inner surface of the movable cylinder is provided with wavy guide grooves connected end to end. An insertion column inserted into the guide groove is arranged on the guide column; and the structure is simple, the conception is novel, practicability and convenience are realized, and the use is strong.

Description

Technical Field

[0001] The invention relates to the technical field of biogas production, in particular to a biogas production anti-scum crusting device. Background Art

[0002] As a renewable energy source, biogas mainly uses biogas digesters to ferment human and animal feces and plant straw, and then transmits the fermented biogas to users. It is welcomed by rural users for its cleanliness, environmental protection, low cost and high returns.

[0003] At present, the commonly used biogas production device is a biogas tank. Materials are injected into the biogas tank and the temperature is controlled to make the biogas liquid in the biogas tank undergo anaerobic fermentation to produce biogas. However, during production, some organic matter such as straw in the raw materials forms scum under the action of buoyancy. As the fermentation time goes by, scum continues to form and float up, causing the scum on the liquid surface to become thicker and thicker. In the absence of external disturbance, the scum on the liquid surface forms a crust layer due to lack of water and shrinkage. The formation of the scum crust layer will cause the accumulation of biogas produced in the biogas fermentation tank to be hindered, the effective volume of the fermentation area and the gas storage space to be reduced, resulting in a decrease in the utilization rate of the fermentation raw materials and a decrease in gas production.

[0004] The existing methods for dealing with scum crusts are mostly to manually use tools to climb to the top of the biogas tank regularly to manually break the crusts, but this method has the following defects in actual operation: since some crusts are hard, manual shell breaking is time-consuming and laborious, and the crusts cannot be evenly broken into small pieces, and the crushing effect is poor. Summary of the invention

[0005] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the present invention is to provide a device for preventing scum crusting in biogas production, which effectively solves the problem of scum crusting during biogas production.

[0006] The technical solution is as follows: the present invention comprises a fermentation tank, wherein a rotatable shaft is coaxially arranged in the fermentation tank, a moving cylinder is coaxially slidably connected to the upper side of the shaft, a plurality of receiving grooves evenly distributed along its circumferential direction are provided on the outer surface of the moving cylinder, a crushing blade is hinged in the receiving groove, an inclined swing rod is provided at the lower end of the crushing blade, a swing groove is provided on the swing rod, a plurality of fixed rods corresponding to the swing rods one by one and located on the inner side of the swing rods are provided at the upper end of the fermentation tank, the fixed rods are inserted into the receiving grooves and a lifting column is provided at the lower end thereof and inserted into the swing grooves on the corresponding sides thereof, a guide column inserted into the moving cylinder is provided on the upper side wall of the fermentation tank, a wavy guide groove connected end to end is provided on the inner surface of the moving cylinder, and a plug column inserted into the guide groove is provided on the guide column.

[0007] Compared with the prior art, the beneficial effects of the present invention are: it can fully crush and cut the scum shell accumulated on the upper side of the biogas tank to prevent the scum shell from blocking the generated biogas. Compared with the traditional manual shell breaking and cutting using tools, the operation is simple and time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is the main axonometric drawing of the present invention.

[0009] Figure 2 It is a full-section main axonometric drawing of the present invention.

[0010] Figure 3 It is a full-section top view axonometric drawing of the present invention.

[0011] Figure 4 It is a cutaway axonometric view of the moving cylinder and the guide groove in the present invention.

[0012] Figure 5 The present invention Figure 2 A is an enlarged view of the middle image.

[0013] Figure 6 The present invention Figure 3 Enlarged view of B.

[0014] Reference numerals: 1. Fermentation tank; 2. Rotating shaft; 3. Moving cylinder; 4. Receiving groove; 5. Crushing blade; 6. Swinging rod; 7. Swinging groove; 8. Fixed rod; 9. Lifting column; 10. Guide column; 11. Guide groove; 12. Inserting column; 13. Motor; 14. Stirring blade; 15. Gas collecting pipe; 16. Feeding pipe; 17. Support block. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the basic implementation disclosed below.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0018] Depend on Figures 1 to 6 A fermentation tank 1 is provided, which includes a coaxially rotatable shaft 2 inside the fermentation tank 1, a moving cylinder 3 is coaxially slidably connected to the upper side of the shaft 2, a plurality of accommodating grooves 4 evenly distributed along its circumferential direction are provided on the outer surface of the moving cylinder 3, a crushing blade 5 is hinged in the accommodating groove 4, an inclined swing rod 6 is provided at the lower end of the crushing blade 5, a swing groove 7 is provided on the swing rod 6, a plurality of fixed rods 8 corresponding to the swing rod 6 and located on the inner side of the swing rod 6 are provided at the upper end of the fermentation tank 1, the fixed rod 8 is inserted into the accommodating groove 4 and a lifting column 9 is provided at the lower end thereof and inserted into the swing groove 7 on the corresponding side, a guide column 10 inserted into the moving cylinder 3 is provided on the upper side wall of the fermentation tank 1, a wavy guide groove 11 connected end to end is provided on the inner surface of the moving cylinder 3, and a plug column 12 inserted into the guide groove 11 is provided on the guide column 10

[0019] In order to rotate the rotating shaft 2 , the rotating shaft 2 is coaxially rotatably connected to the fermentation tank 1 . A motor 13 is disposed at the lower end of the fermentation tank 1 , and an output shaft of the motor 13 is coaxially and fixedly connected to the rotating shaft 2 .

[0020] In order to accelerate the crushing effect, a plurality of stirring blades 14 are provided on the rotating shaft 2 .

[0021] In order to collect biogas, a gas collecting pipe 15 is provided at the upper end of the fermentation tank 1 .

[0022] In order to facilitate the addition of materials, a feeding pipe 16 is provided at the right end of the fermentation tank 1.

[0023] In order to facilitate supporting the fermentation tank 1 , a plurality of support blocks 17 are provided at the lower end of the fermentation tank 1 .

[0024] When the present invention is used, the raw material is first pumped into the fermentation tank 1 through the feeding pipe 16, and fermentation is carried out in the fermentation tank 1. The generated biogas is discharged through the gas collecting pipe 15 for collection and use. After a period of use, the scum floats up and gathers to form a harder scum shell. At this time, the generated biogas is located below the scum shell and cannot enter the gas collecting pipe 15. At this time, the motor 13 is turned on, and the motor 13 drives the rotating shaft 2, the rotating shaft 2 drives the moving cylinder 3 to rotate, and the moving cylinder 3 drives the guide groove 11 on its inner wall to rotate. Since the guide column 10 and the plug column 12 thereon are fixed at this time, the plug column 12 and the guide groove 11 drive the moving cylinder 3 to rotate. It moves up and down repeatedly on the rotating shaft 2. When the moving cylinder 3 moves downward, it also drives the crushing blade 5 and the swing rod 6 in the accommodating groove 4 to move downward. Since the fixed rod 8 and the lifting column 9 are fixed, the lifting column 9 drives the swing rod 6 to swing upward, and then drives the corresponding crushing blade 5 to swing downward, so that the crushing blade 5 is swung out of the accommodating groove 4. Since part of the crushing blade 5 is located above the scum shell and part is located below the scum shell at this time, the crushing blade 5 will cut and crush the entire scum shell when it swings downward. When the plug column 12 moves to the lowest end in the guide groove 11, the crushing blade 5 swings downward to be perpendicular to the moving cylinder 3. When the movable cylinder 3 moves downward on the rotating shaft 2, it also drives the stirring blade 14 to rotate, so as to stir the material in the fermentation tank 1, thereby driving the scum shell at the upper end to rotate and enhancing the cutting effect. The rotating shaft 2 drives the movable cylinder 3 to continue to rotate. At this time, due to the action of the guide groove 11 and the plug column 12, the movable cylinder 3 is driven to move upward, thereby causing the crushing blade 5 to swing upward to the initial position in the accommodating groove 4, and then continue to rotate, thereby driving the crushing blade 5 to swing downward again. At the same time, the rotating shaft 2 also drives the movable cylinder 3 and the crushing blade 5 in the period to rotate, thereby causing the crushing blade 5 to repeatedly swing downward while rotating, thereby achieving crushing and cutting of various positions of the scum shell, and combining with the stirring of the stirring blade 14 to achieve sufficient cutting of the scum shell.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the crushing blades, guide grooves, swing rods, etc. can fully crush and cut the scum shell accumulated on the upper side of the biogas tank to prevent the scum shell from blocking the generated biogas. Compared with the traditional manual shell breaking and cutting using tools, the operation is simple and time-saving and labor-saving. This invention has a simple structure, novel conception, practicality, convenience and strong use.

[0026] It should be noted that, according to implementation needs, the various components described in the embodiments of the present invention may be split into more components, or two or more components or parts of components may be combined into a new component to achieve the purpose of the embodiments of the present invention.

[0027] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A biogas production anti-scum crusting device, comprising a fermentation tank (1), characterized in that: A rotatable shaft (2) is coaxially arranged in the fermentation tank (1), and a moving cylinder (3) is coaxially slidably connected to the upper side of the shaft (2). A plurality of receiving grooves (4) evenly distributed along the circumferential direction of the moving cylinder (3) are provided on the outer surface of the moving cylinder (3), a crushing blade (5) is hinged in the receiving groove (4), an inclined swinging rod (6) is provided at the lower end of the crushing blade (5), and a swinging groove (7) is provided on the swinging rod (6). A plurality of fixed rods (8) corresponding to the swinging rods (6) and located inside the swinging rods (6) are provided at the upper end of the fermentation tank (1), the fixed rods (8) are inserted into the receiving grooves (4), and a lifting column (9) is provided at the lower end of the fixed rods (8) and inserted into the swinging grooves (7) on the corresponding side thereof. A guide column (10) inserted into the moving cylinder (3) is provided on the upper side wall of the fermentation tank (1), and a wave-shaped guide groove (11) connected end to end is provided on the inner surface of the moving cylinder (3), and a plug column (12) inserted into the guide groove (11) is provided on the guide column (10).

2. The device for preventing scum crusting in biogas production according to claim 1, characterized in that: The rotating shaft (2) is coaxially rotatably connected to the fermentation tank (1); a motor (13) is provided at the lower end of the fermentation tank (1); and an output shaft of the motor (13) is coaxially fixedly connected to the rotating shaft (2).

3. The device for preventing scum crusting in biogas production according to claim 1, characterized in that: The rotating shaft (2) is provided with a plurality of stirring blades (14). The rotating shaft (2) is provided with a plurality of stirring blades (14).

4. The device for preventing scum crusting in biogas production according to claim 1, characterized in that: The fermentation tank (1) is provided with an air collecting pipe (15) at the upper end.

5. The device for preventing scum crusting in biogas production according to claim 1, characterized in that: A feeding pipe (16) is provided at the right end of the fermentation tank (1).

6. The device for preventing scum crusting in biogas production according to claim 1, characterized in that: A plurality of support blocks (17) are provided at the lower end of the fermentation tank (1).

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