Continuous vertical dry fermentation anaerobic reactor

Abstract

The invention provides a continuous vertical dry fermentation anaerobic reactor, which comprises a vertical tank body, a stirrer and a stirrer support, the stirrer comprises a stirring driving mechanism, a stirring shaft and a plurality of stirring rod assemblies, the stirring driving mechanism is installed on the stirrer support, and the stirring driving mechanism is in driving connection with the stirring shaft. The stirring rod assemblies are sequentially mounted on the stirring shaft; each stirring rod assembly comprises a first inclined main rod, a second inclined main rod, a first horizontal cross rod and a second horizontal cross rod, two first inclined auxiliary rods are connected between the first inclined main rod and the stirring shaft, and two second inclined auxiliary rods are connected between the second inclined main rod and the stirring shaft; the two ends of the first horizontal cross rod are connected with the first inclined main rod through first inclined connecting rods correspondingly, and the two ends of the second horizontal cross rod are connected with the second inclined main rod through second inclined connecting rods correspondingly. According to the continuous vertical dry fermentation anaerobic reactor provided by the invention, the occupied area can be effectively reduced, and the stirring effect of the stirrer is better.

Description

Technical Field

[0001] The invention relates to the technical field of anaerobic fermentation equipment, in particular to a continuous vertical dry fermentation anaerobic reactor. Background Art

[0002] The biomass resources available for anaerobic fermentation in my country mainly include crop straw, livestock and poultry manure, agricultural product processing residues, fruit and vegetable residues, organic domestic waste (kitchen waste / perishable waste), industrial organic wastewater, etc. At present, the total amount of waste resources available for biogas production in the country is about 11.17 billion tons, of which agricultural and rural organic waste is about 4.27 billion tons, urban organic waste is about 360 million tons, and industrial organic wastewater is about 6.54 billion tons. The total biogas production potential of waste can reach 500 billion cubic meters, and the carbon emission reduction potential can reach 960 million tons.

[0003] If a large amount of organic waste is not effectively treated, it will cause serious pollution to the environment. As a typical distributed energy production technology, biogas technology is an important way to treat organic waste. At present, the biogas technologies commonly used in my country are wet fermentation technology and dry fermentation technology. The former mainly includes completely mixed anaerobic digestion (CSTR), plug flow anaerobic reaction (HCPF), upflow anaerobic solid reaction (USR), upflow anaerobic sludge blanket (UASB), anaerobic filter (AF) and upflow anaerobic composite bed (UBF); the latter mainly includes German Bekon, Bioferm and GICON processes, French SPI garage and VALORGA processes, Belgian Dranco process, Swedish Kompogas process and Finnish BioGTSO process.

[0004] Among them, the core device of dry fermentation biogas technology is the dry anaerobic fermentation tank, which is mainly used for resource processing of various types of high-inherent organic waste. The raw materials are pre-treated by heating, inoculation, conditioning, etc. before being input into the fermentation tank for processing. However, most of the existing dry anaerobic fermentation tanks are horizontal tanks, which not only occupy a large area as a whole, but also the agitator in the fermentation tank is usually only equipped with a few simple stirring blades on the stirring shaft, which has the disadvantage of poor stirring effect for high-concentration materials. Summary of the invention

[0005] The object of the present invention is to provide a continuous vertical dry fermentation anaerobic reactor, which can solve the problems of large floor space and poor stirring effect of the agitator in the existing horizontal dry anaerobic fermentation tank.

[0006] The present invention provides a continuous vertical dry fermentation anaerobic reactor, comprising a vertical tank body, an agitator and an agitator support, wherein the agitator comprises a stirring drive mechanism, a stirring shaft and a plurality of stirring rod assemblies, wherein the stirring drive mechanism is mounted on the agitator support, the stirring drive mechanism is drivingly connected to the upper end of the stirring shaft, the lower end of the stirring shaft extends into the interior of the vertical tank body, and each stirring rod assembly is sequentially mounted on the stirring shaft;

[0007] Each of the stirring rod assemblies includes a first inclined main rod, a second inclined main rod, a first horizontal cross rod and a second horizontal cross rod. The first inclined main rod, the second inclined main rod, the first horizontal cross rod and the second horizontal cross rod are fixed on the stirring shaft in sequence from top to bottom. Two first inclined sub-rods are connected in sequence from top to bottom between the first inclined main rod and the stirring shaft, and two second inclined sub-rods are connected in sequence from top to bottom between the second inclined main rod and the stirring shaft. The two ends of the first horizontal cross rod are respectively connected to the first inclined main rod by a first inclined connecting rod, and the two ends of the second horizontal cross rod are respectively connected to the second inclined main rod by a second inclined connecting rod.

[0008] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the upper end of the first inclined main rod is fixedly connected to the stirring shaft, the upper end of the second inclined main rod is fixedly connected to the stirring shaft, and the first inclined main rod and the second inclined main rod are respectively arranged on opposite sides of the stirring shaft.

[0009] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the middle part of the first horizontal cross bar is fixedly connected to the stirring shaft, the middle part of the second horizontal cross bar is fixedly connected to the stirring shaft, and the first horizontal cross bar and the second horizontal cross bar are parallel to each other; the first inclined main rod and the first horizontal cross bar are perpendicular to each other, and the second inclined main rod and the first horizontal cross bar are perpendicular to each other.

[0010] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the two first inclined sub-rods are parallel to each other, the two second inclined sub-rods are parallel to each other, and each of the first inclined sub-rods is parallel to each of the second inclined sub-rods; the upper end of each of the first inclined sub-rods is fixedly connected to the stirring shaft, and the upper end of each of the second inclined sub-rods is fixedly connected to the second inclined main rod.

[0011] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the upper end of each of the first inclined connecting rods is respectively connected to the two ends of the first horizontal cross bar, and the connection point between the lower end of each of the first inclined connecting rods and the stirring shaft is located between the two first inclined sub-rods; the lower end of each of the second inclined connecting rods is respectively connected to the two ends of the second horizontal cross bar, and the connection point between the upper end of each of the second inclined connecting rods and the stirring shaft is located between the two second inclined sub-rods.

[0012] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, two stirring rod assemblies are installed on the stirring shaft, and the two stirring rod assemblies are respectively a first stirring rod assembly and a second stirring rod assembly from top to bottom; the upper end of the first inclined main rod in the second stirring rod assembly and the middle part of the second horizontal cross rod in the first stirring rod assembly are both connected to the same height position on the stirring shaft; the lower end of the second inclined connecting rod located below in the first stirring rod assembly and the upper end of the second inclined main rod in the second stirring rod assembly are both connected to the same position on the stirring shaft.

[0013] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the stirring drive mechanism includes a driving motor, a transmission gear and a slewing bearing, the outer ring of the slewing bearing is provided with outer ring teeth, the transmission gear is mounted and fixed on the output shaft of the driving motor, the transmission gear is meshed and connected with the outer ring teeth, and the outer ring of the slewing bearing is connected and fixed to the upper end of the stirring shaft through a connecting assembly.

[0014] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the agitator bracket includes a plurality of support rods and a support plate fixed to the top of the support rods, the plurality of support rods are respectively arranged on the periphery of the vertical tank body, and the support plate is arranged above the vertical tank body; the drive motor is installed on the support plate, and the inner ring of the slewing bearing is connected and fixed to the lower surface of the support plate.

[0015] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, the connection assembly includes a connection plate and a conical connector, the upper surface of the connection plate is connected and fixed to the outer ring of the slewing bearing, the lower surface of the connection plate is connected and fixed to the conical connector, and the upper end of the stirring shaft is connected and fixed to the conical connector.

[0016] According to a continuous vertical dry fermentation anaerobic reactor provided by the present invention, a biogas outlet is provided at the top of the vertical tank body, a discharge port is provided at the bottom of the vertical tank body, and a feed port is provided at the upper part of the side wall of the vertical tank body.

[0017] The continuous vertical dry fermentation anaerobic reactor provided by the present invention adopts a vertical tank body, which can effectively reduce the floor space and facilitate the overall layout of the equipment; by arranging an agitator bracket outside the vertical tank body, installing a stirring drive mechanism on the agitator bracket, driving the stirring drive mechanism to the upper end of the stirring shaft, extending the lower end of the stirring shaft into the interior of the vertical tank body, and installing a plurality of stirring rod assemblies on the stirring shaft, the weight of the agitator is borne by the agitator bracket, and the excessive load of the agitator itself on the vertical tank body can be avoided to affect the vertical tank body, thereby ensuring the overall structural stability and reliability of the vertical tank body; wherein the stirring rod The component includes a first inclined main rod, a second inclined main rod, a first horizontal cross rod and a second horizontal cross rod which are fixed on the stirring shaft from top to bottom in sequence. Two first inclined sub-rods are connected in sequence between the first inclined main rod and the stirring shaft, and two second inclined sub-rods are connected in sequence between the second inclined main rod and the stirring shaft. The two ends of the first horizontal cross rod are respectively connected to the first inclined main rod through a first inclined connecting rod, and the two ends of the second horizontal cross rod are respectively connected to the second inclined main rod through a second inclined connecting rod, thereby forming a stirring rod structure component which is mutually staggered and has a stable and reliable structure, which not only has a larger stirring range but also a better stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a continuous vertical dry fermentation anaerobic reactor of the present invention;

[0020] Figure 2 It is a schematic diagram of the assembly structure of the stirring drive mechanism and the stirring shaft in the continuous vertical dry fermentation anaerobic reactor of the present invention;

[0021] Figure 3 It is a schematic diagram of the assembly structure of the stirring rod assembly, the top shell breaking assembly, the bottom sand scraping assembly and the stirring shaft in the continuous vertical dry fermentation anaerobic reactor of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a stirring rod assembly in a continuous vertical dry fermentation anaerobic reactor of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the top shell breaking assembly in the continuous vertical dry fermentation anaerobic reactor of the present invention;

[0024] Figure 6It is a structural schematic diagram of the bottom sand scraping assembly in the continuous vertical dry fermentation anaerobic reactor of the present invention.

[0025] Description of reference numerals:

[0026] 1. Vertical tank body; 101. Biogas outlet; 102. Discharge port; 103. Feed port;

[0027] 2. stirrer bracket; 201. support rod; 202. support plate;

[0028] 3. Stirring shaft;

[0029] 4. Stirring rod assembly; 401. First tilting main rod; 402. Second tilting main rod; 403. First horizontal cross rod; 404. Second horizontal cross rod; 405. First tilting auxiliary rod; 406. Second tilting auxiliary rod; 407. First tilting connecting rod; 408. Second tilting connecting rod;

[0030] 5. Top shell breaking assembly; 501. Mounting cross bar; 502. Shell breaking rod; 503. Upper shaft sleeve; 504. Horizontal connecting rod; 505. First horizontal reinforcing rod; 506. Second horizontal reinforcing rod; 507. First inclined reinforcing rod;

[0031] 6. Bottom sand scraping assembly; 601. horizontal fixing rod; 602. first horizontal mounting rod; 603. second horizontal mounting rod; 604. inclined mounting rod; 605. second shaft sleeve; 606. third shaft sleeve; 607. third horizontal reinforcing rod; 608. fourth horizontal reinforcing rod; 609. second inclined reinforcing rod; 610. vertical reinforcing rod; 611. conical sand scraping head;

[0032] 7. Top bearing; 8. Bottom bearing; 9. Driving motor; 10. Transmission gear; 11. Slewing bearing; 12. Connecting plate; 13. Conical connector; 14. Screw feeder. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figures 1 to 6 As shown, the continuous vertical dry fermentation anaerobic reactor of the embodiment of the present invention comprises a vertical tank body 1, an agitator and an agitator bracket 2, wherein the agitator bracket 2 is arranged outside the vertical tank body 1. Due to the use of the vertical tank body 1, the floor space can be effectively reduced, which is convenient for the overall layout of the reactor.

[0037] The agitator includes an agitation drive mechanism, an agitation shaft 3 and a plurality of agitation rod assemblies 4. The agitation drive mechanism is mounted on the agitator bracket 2. The agitation drive mechanism is drivingly connected to the upper end of the agitation shaft 3. The lower end of the agitation shaft 3 extends into the interior of the vertical tank body 1. Each agitation rod assembly 4 is sequentially mounted on the agitation shaft 3. Since the agitator bracket 2 outside the vertical tank body 1 is used to suspend and install the agitator, the weight of the agitator can be carried by the agitator bracket 2, thereby preventing the agitator itself from acting on the vertical tank body 1 and affecting the vertical tank body 1 due to excessive load, thereby ensuring the overall structural stability and reliability of the vertical tank body 1.

[0038] Among them, each stirring rod assembly 4 includes a first inclined main rod 401, a second inclined main rod 402, a first horizontal cross bar 403 and a second horizontal cross bar 404. The first inclined main rod 401, the second inclined main rod 402, the first horizontal cross bar 403 and the second horizontal cross bar 404 are fixed on the stirring shaft 3 from top to bottom in sequence. Two first inclined sub-rods 405 are connected in sequence from top to bottom between the first inclined main rod 401 and the stirring shaft 3, and two second inclined sub-rods 406 are connected in sequence from top to bottom between the second inclined main rod 402 and the stirring shaft 3. The two ends of the first horizontal cross bar 403 are respectively connected to the first inclined main rod 401 through a first inclined connecting rod 407, and the two ends of the second horizontal cross bar 404 are respectively connected to the second inclined main rod 402 through a second inclined connecting rod 408, thereby forming a stirring rod structure assembly that is mutually staggered and connected and has a stable and reliable structure, which not only has a larger stirring range but also has a better stirring effect.

[0039] Specifically, the upper end of the first inclined main rod 401 is fixedly connected to the stirring shaft 3, the upper end of the second inclined main rod 402 is fixedly connected to the stirring shaft 3, and the first inclined main rod 401 and the second inclined main rod 402 are respectively arranged on opposite sides of the stirring shaft 3, thereby ensuring the overall structural stability of the stirring rod assembly 4.

[0040] The middle of the first horizontal crossbar 403 is fixedly connected to the stirring shaft 3, the middle of the second horizontal crossbar 404 is fixedly connected to the stirring shaft 3, and the first horizontal crossbar 403 and the second horizontal crossbar 404 are parallel to each other. The first inclined main rod 401 is perpendicular to the first horizontal crossbar 403, and the second inclined main rod 402 is also perpendicular to the first horizontal crossbar 403. That is, the first inclined main rod 401 is perpendicular to the second horizontal crossbar 404, and the second inclined main rod 402 is also perpendicular to the second horizontal crossbar 404, so that the whole stirring rod assembly 4 can be dispersedly arranged, the structure is more stable and reliable, and the stirring effect is better.

[0041] Specifically, the two first inclined secondary rods 405 are parallel to each other, the two second inclined secondary rods 406 are parallel to each other, and each first inclined secondary rod 405 is parallel to each second inclined secondary rod 406. The upper end of each first inclined secondary rod 405 is fixedly connected to the stirring shaft 3, and the lower end of each first inclined secondary rod 405 is fixedly connected to the first inclined main rod 401. The upper end of each second inclined secondary rod 406 is fixedly connected to the second inclined main rod 402, and the lower end of each second inclined secondary rod 406 is fixedly connected to the stirring shaft 3. That is, the two second inclined secondary rods 406 and the two second inclined secondary rods 406 are arranged in an inclined manner from top to bottom, which further improves the overall stability and reliability of the stirring rod assembly 4.

[0042] Specifically, the upper ends of the first inclined links 407 are connected to the two ends of the first horizontal crossbar 403, and the connection point between the lower end of the first inclined links 407 and the stirring shaft 3 is located between the two first inclined secondary links 405. The lower ends of the second inclined links 408 are connected to the two ends of the second horizontal crossbar 404, and the connection point between the upper end of the second inclined links 408 and the stirring shaft 3 is located between the two second inclined secondary links 406.

[0043] In this embodiment, two stirring rod assemblies 4 are installed on the stirring shaft 3, and the two stirring rod assemblies 4 are respectively the first stirring rod assembly and the second stirring rod assembly from top to bottom. The upper end of the first inclined main rod 401 in the second stirring rod assembly and the middle part of the second horizontal cross bar 404 in the first stirring rod assembly are both connected to the same height position on the stirring shaft 3. The lower end of the second inclined connecting rod 408 located below in the first stirring rod assembly and the upper end of the second inclined main rod 402 in the second stirring rod assembly are both connected to the same position on the stirring shaft 3. This connection arrangement between the two stirring rod assemblies 4 makes the structure between the stirring rod assemblies 4 on the stirring shaft 3 more compact and ensures the stability and reliability of the overall structure.

[0044] Specifically, the stirring rod assembly 4 of this embodiment is made of steel plate.

[0045] In some embodiments of the present invention, the top of the vertical tank body 1 is a conical structure with a small top and a large bottom, and the bottom of the vertical tank body 1 is a conical structure with a large top and a small bottom. A top bearing 7 is installed on the top plate of the vertical tank body 1, and a bottom bearing 8 is installed on the bottom plate of the vertical tank body 1. The stirring shaft 3 is rotatably connected to the vertical tank body 1 through the top bearing 7 and the bottom bearing 8 respectively.

[0046] Furthermore, a top shell breaking assembly 5 is also provided in the vertical tank body 1, and the top shell breaking assembly 5 is installed on the stirring shaft 3 at a position close to the top of the vertical tank body 1. The top shell breaking assembly 5 includes a mounting cross bar 501 and a plurality of shell breaking rods 502 fixedly mounted on the mounting cross bar 501, the mounting cross bar 501 is vertically mounted on the stirring shaft 3, and the plurality of shell breaking rods 502 are respectively arranged in a square shape extending along the length of the mounting cross bar 501, and the bottom of each shell breaking rod 502 is arranged in a pointed cone shape, and each shell breaking rod 502 is arranged vertically downward, so as to facilitate the shell breaking of the top scum of the vertical tank body 1.

[0047] The mounting cross bar 501 is fixedly mounted on the stirring shaft 3 through the first sleeve 503 and can rotate synchronously with the stirring shaft 3. A horizontal connecting rod 504 is also mounted on the upper sleeve 503, and the horizontal connecting rod 504 is perpendicular to the mounting cross bar 501, and the length of the horizontal connecting rod 504 is less than the length of the mounting cross bar 501. Two first horizontal reinforcing rods 505 are connected to one end of the horizontal connecting rod 504, and the two first horizontal reinforcing rods 505 are respectively connected to the left and right parts of the mounting cross bar 501, and two second horizontal reinforcing rods 506 are connected to the other end of the horizontal connecting rod 504, and the two second horizontal reinforcing rods 506 are respectively connected to the left and right parts of the mounting cross bar 501, and the mounting cross bar 501, the horizontal connecting rod 504, the two first horizontal reinforcing rods 505 and the two second horizontal reinforcing rods 506 are all on the same horizontal plane, so that the two first horizontal reinforcing rods 505 and the two second horizontal reinforcing rods 506 are interconnected to enclose a quadrilateral frame, thereby improving the overall structural strength and stability of the top shell breaking assembly 5.

[0048] The two ends of the horizontal connecting rod 504 are respectively connected and fixed to the bottom of the inner ring of the top bearing 7 through the first inclined reinforcing rod 507, and the outer ring of the top bearing 7 is connected and fixed to the top plate of the vertical tank body 1, and the inner ring of the top bearing 7 is connected and fixed to the stirring shaft 3. By providing two first inclined reinforcing rods 507, the structural strength and stability of the top shell breaking assembly 5 can be further improved.

[0049] Furthermore, a bottom sand scraping assembly 6 is also provided in the vertical tank body 1, and the bottom sand scraping assembly 6 is installed on the agitator shaft 3 at a position close to the bottom of the vertical tank body 1. The bottom sand scraping assembly 6 includes a horizontal fixing rod 601, a first horizontal mounting rod 602, a second horizontal mounting rod 603 and two inclined mounting rods 604, and the horizontal fixing rod 601 is vertically mounted on the agitator shaft 3. The first horizontal mounting rod 602 and the second horizontal mounting rod 603 are both arranged below the horizontal fixing rod 601, and the first horizontal mounting rod 602 and the second horizontal mounting rod 603 are both vertically mounted on the agitator shaft 3, and the first horizontal mounting rod 602 and the second horizontal mounting rod 603 are perpendicular to each other. One end of the two inclined mounting rods 604 is respectively connected and fixed to the two ends of the first horizontal mounting rod 602, and the other ends of the two inclined mounting rods 604 are respectively connected and fixed to the two ends of the horizontal fixing rod 601, so that the two inclined mounting rods 604, the first horizontal mounting rod 602 and the second horizontal mounting rod 603 are connected to form a structure that is compatible with the conical bottom of the vertical tank body 1. A plurality of conical sand scraping heads 611 are provided at the bottom of each inclined mounting rod 604, the first horizontal mounting rod 602 and the second horizontal mounting rod 603, so as to effectively scrape the mud and sand at the bottom of the vertical tank body 1.

[0050] The horizontal fixing rod 601 is fixedly mounted on the stirring shaft 3 through the second shaft sleeve 605, and can rotate synchronously with the stirring shaft 3. The first horizontal mounting rod 602 and the second horizontal mounting rod 603 are fixedly mounted on the stirring shaft 3 through the third shaft sleeve 606, and can rotate synchronously with the stirring shaft 3. Two third horizontal reinforcing rods 607 are connected to one end of the first horizontal mounting rod 602, and the two third horizontal reinforcing rods 607 are respectively connected to the two ends of the second horizontal mounting rod 603. Two fourth horizontal reinforcing rods 608 are connected to the other end of the first horizontal mounting rod 602, and the two fourth horizontal reinforcing rods 608 are respectively connected to the two ends of the second horizontal mounting rod 603. The first horizontal mounting rod 602, the second horizontal mounting rod 603, the two third horizontal reinforcing rods 607 and the two fourth horizontal reinforcing rods 608 are all on the same horizontal plane, so that the two third horizontal reinforcing rods 607 and the two fourth horizontal reinforcing rods 608 are connected to each other to form a quadrilateral frame, thereby improving the overall structural strength and stability of the bottom sand scraping assembly 6.

[0051] Among them, both ends of the second horizontal mounting rod 603 are connected and fixed to the second shaft sleeve 605 through the second inclined reinforcement rod 609, and one end of the two inclined mounting rods 604 are connected and fixed to the horizontal fixing rod 601 through the vertical reinforcement rod 610, thereby further improving the structural strength and stability of the bottom sand scraping assembly 6.

[0052] In some embodiments of the present invention, the stirring drive mechanism includes a driving motor 9, a transmission gear 10 and a slewing bearing 11, the outer ring of the slewing bearing 11 is provided with outer ring teeth, the transmission gear 10 is mounted and fixed on the output shaft of the driving motor 9, the transmission gear 10 is meshed and connected with the outer ring teeth of the slewing bearing 11, and the outer ring of the slewing bearing 11 is connected and fixed to the upper end of the stirring shaft 3 through a connecting assembly. That is, the driving motor 9 can drive the transmission gear 10 to rotate, and the rotation of the transmission gear 10 can drive the outer ring of the slewing bearing 11 to rotate, and then drive the stirring shaft 3 to rotate through the connecting assembly. Since the stirring drive mechanism adopts a structural form in which the driving motor 9, the transmission gear 10 and the slewing bearing 11 are matched, the agitator of this embodiment has a lower stirring speed, so that the high-concentration material can be fully stirred and mixed through slow stirring of the whole flow field.

[0053] Specifically, the agitator bracket 2 includes a plurality of support rods 201 and a support plate 202 fixed to the top of the support rods 201. The plurality of support rods 201 are respectively arranged on the periphery of the vertical tank body 1, and the support plate 202 is horizontally arranged above the vertical tank body 1. The drive motor 9 is mounted on the support plate 202, the transmission gear 10 is arranged below the support plate 202, and the output shaft of the drive motor 9 passes through the support plate 202 and is fixedly connected to the transmission gear 10. The inner ring of the slewing bearing 11 is fixed to the lower surface of the support plate 202 by bolt connection, so that the transmission gear 10 is meshed with the outer ring teeth of the slewing bearing 11.

[0054] Specifically, the connection assembly includes a connection plate 12 and a conical connection body 13, the upper surface of the connection plate 12 is fixedly connected to the outer ring of the slewing bearing 11 by bolts, the lower surface of the connection plate 12 is fixedly connected to the conical connection body 13, and the upper end of the stirring shaft 3 is fixedly connected to the conical connection body 13. That is, when the driving motor 9 drives the outer ring of the slewing bearing 11 to rotate through the transmission gear 10, the outer ring of the slewing bearing 11 can drive the connection plate 12 and the conical connection body 13 to rotate synchronously, and then drive the stirring shaft 3 to rotate synchronously.

[0055] In some embodiments of the present invention, a biogas outlet 101 is provided at the top of the vertical tank body 1, a discharge port 102 is provided at the bottom of the vertical tank body 1, and a feed port 103 is provided at the upper part of the side wall of the vertical tank body 1, and the feed port 103 is connected to the screw feeder 14. When in use, the raw materials are pre-treated by heating, inoculation, conditioning, etc., and then conveyed by the screw feeder 14, and the raw materials enter the vertical tank body 1 through the feed port 103, and then slowly stirred by the agitator, and the raw materials gradually sink by mechanical stirring and their own gravity, and in this process, biogas is anaerobically produced, and the biogas is output to the outside through the biogas outlet 101, and the fully degraded materials are discharged through the discharge port 102. In this embodiment, the feeding and discharging of the vertical tank body 1 are continuous, which can realize the first-in-first-out continuous degradation and utilization of high-solid waste.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous vertical dry fermentation anaerobic reactor, characterized in that: It comprises a vertical tank body, an agitator and an agitator support, wherein the agitator comprises a stirring drive mechanism, a stirring shaft and a plurality of stirring rod assemblies, wherein the stirring drive mechanism is mounted on the agitator support, the stirring drive mechanism is drivingly connected to the upper end of the stirring shaft, the lower end of the stirring shaft extends into the interior of the vertical tank body, and each stirring rod assembly is sequentially mounted on the stirring shaft; Each of the stirring rod assemblies includes a first inclined main rod, a second inclined main rod, a first horizontal cross rod and a second horizontal cross rod. The first inclined main rod, the second inclined main rod, the first horizontal cross rod and the second horizontal cross rod are fixed on the stirring shaft in sequence from top to bottom. Two first inclined sub-rods are connected in sequence from top to bottom between the first inclined main rod and the stirring shaft, and two second inclined sub-rods are connected in sequence from top to bottom between the second inclined main rod and the stirring shaft. The two ends of the first horizontal cross rod are respectively connected to the first inclined main rod by a first inclined connecting rod, and the two ends of the second horizontal cross rod are respectively connected to the second inclined main rod by a second inclined connecting rod.

2. The continuous vertical dry fermentation anaerobic reactor according to claim 1, characterized in that: The upper end of the first inclined main rod is fixedly connected to the stirring shaft, the upper end of the second inclined main rod is fixedly connected to the stirring shaft, and the first inclined main rod and the second inclined main rod are respectively arranged on opposite sides of the stirring shaft.

3. The continuous vertical dry fermentation anaerobic reactor according to claim 2, characterized in that: The middle part of the first horizontal cross bar is fixedly connected to the stirring shaft, the middle part of the second horizontal cross bar is fixedly connected to the stirring shaft, and the first horizontal cross bar and the second horizontal cross bar are parallel to each other; the first inclined main rod and the first horizontal cross bar are perpendicular to each other, and the second inclined main rod and the first horizontal cross bar are perpendicular to each other.

4. The continuous vertical dry fermentation anaerobic reactor according to claim 3, characterized in that: The two first inclined sub-rods are parallel to each other, the two second inclined sub-rods are parallel to each other, and each first inclined sub-rod is parallel to each second inclined sub-rod; the upper end of each first inclined sub-rod is fixedly connected to the stirring shaft, and the upper end of each second inclined sub-rod is fixedly connected to the second inclined main rod.

5. The continuous vertical dry fermentation anaerobic reactor according to claim 4, characterized in that: The upper end of each first inclined connecting rod is respectively connected to the two ends of the first horizontal cross bar, and the connection point between the lower end of each first inclined connecting rod and the stirring shaft is located between the two first inclined sub-rods; the lower end of each second inclined connecting rod is respectively connected to the two ends of the second horizontal cross bar, and the connection point between the upper end of each second inclined connecting rod and the stirring shaft is located between the two second inclined sub-rods.

6. The continuous vertical dry fermentation anaerobic reactor according to claim 5, characterized in that: Two stirring rod assemblies are installed on the stirring shaft, and the two stirring rod assemblies are respectively a first stirring rod assembly and a second stirring rod assembly from top to bottom; the upper end of the first inclined main rod in the second stirring rod assembly and the middle part of the second horizontal cross rod in the first stirring rod assembly are both connected to the same height position on the stirring shaft; the lower end of the second inclined connecting rod located below in the first stirring rod assembly and the upper end of the second inclined main rod in the second stirring rod assembly are both connected to the same position on the stirring shaft.

7. The continuous vertical dry fermentation anaerobic reactor according to claim 1, characterized in that: The stirring drive mechanism includes a driving motor, a transmission gear and a slewing bearing. The outer ring of the slewing bearing is provided with outer ring teeth. The transmission gear is installed and fixed on the output shaft of the driving motor. The transmission gear is meshed and connected with the outer ring teeth. The outer ring of the slewing bearing is connected and fixed to the upper end of the stirring shaft through a connecting component.

8. The continuous vertical dry fermentation anaerobic reactor according to claim 7, characterized in that: The agitator bracket includes a plurality of support rods and a support plate fixed to the top of the support rods, the plurality of support rods are respectively arranged on the periphery of the vertical tank body, and the support plate is arranged above the vertical tank body; the drive motor is installed on the support plate, and the inner ring of the slewing bearing is connected and fixed to the lower surface of the support plate.

9. The continuous vertical dry fermentation anaerobic reactor according to claim 8, characterized in that: The connecting assembly includes a connecting plate and a conical connecting body, the upper surface of the connecting plate is connected and fixed to the outer ring of the slewing bearing, the lower surface of the connecting plate is connected and fixed to the conical connecting body, and the upper end of the stirring shaft is connected and fixed to the conical connecting body.

10. The continuous vertical dry fermentation anaerobic reactor according to any one of claims 1 to 9, characterized in that: The top of the vertical tank body is provided with a biogas outlet, the bottom of the vertical tank body is provided with a material discharge port, and the upper part of the side wall of the vertical tank body is provided with a material feed port.

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