Horizontal compost fermentation tank

Abstract

The utility model provides a horizontal compost fermentation tank. The horizontal compost fermentation tank comprises a horizontal tank body for containing fermentation materials, a stirring mechanism, a discharging mechanism and an access door, the stirring mechanism is horizontally arranged on the central axis of the horizontal tank body and comprises a stirring shaft and a plurality of plough type stirring blade groups which are sequentially arranged on the stirring shaft in a staggered manner; the unloading mechanism is arranged at the bottom of the horizontal tank body; the access door is arranged on one side surface of the horizontal tank body in an openable and closable manner; the horizontal compost fermentation tank can prevent materials from being compacted, so that the materials are fully fermented and are easy to discharge.

Description

Technical Field

[0001] This utility model relates to the field of fermentation equipment technology, and in particular to a horizontal composting fermentation tank. Background Technology

[0002] Composting is a process of decomposing and converting organic waste into fertilizer. It is an environmentally friendly and sustainable waste treatment method that can reduce the amount of waste and pollution to the environment. Composting is usually carried out in composting fermentation tanks, which are widely used.

[0003] Most existing composting fermenters are vertical. For example, a Chinese patent with patent number ZL2023224640983 discloses a composting fermenter, but it has the following problems.

[0004] 1. The vertical design, combined with the staggered mixing blades, usually compacts the material towards the discharge direction during the mixing process, resulting in insufficient fermentation and difficulty in discharging.

[0005] 2. It is difficult to replace the stirring blades when they become loose or worn, and it is also difficult to clean the dead corners inside the tank after fermentation is complete;

[0006] 3. During the mixing process, fibrous materials tend to clump together, resulting in insufficient fermentation and difficulty in discharging.

[0007] Therefore, there is an urgent need for a horizontal composting fermentation tank that can avoid material compaction, ensure full fermentation, and facilitate easy discharge. Utility Model Content

[0008] The purpose of this invention is to provide a horizontal composting fermentation tank, which aims to solve the technical problems of insufficient fermentation, difficulty in discharging, and inconvenient maintenance of traditional fermentation tanks.

[0009] To achieve the above objectives, this utility model provides a horizontal composting fermentation tank, comprising:

[0010] Horizontal tank, used to hold fermentation materials;

[0011] The stirring mechanism is horizontally arranged on the central axis of the horizontal tank, and includes a stirring shaft and a number of plow-type stirring blades arranged alternately on the stirring shaft.

[0012] The unloading mechanism is located at the bottom of the horizontal tank.

[0013] The inspection door is openable and closable on one side of the horizontal tank.

[0014] As a further improvement to the above solution, the horizontal composting fermentation tank also includes several clump-breaking devices, which are spaced apart on the other side of the horizontal tank body to crush the clumps of fermentation material inside the tank.

[0015] As a further improvement to the above solution, the pulverizing device includes a drive motor disposed outside the horizontal tank, a rotating shaft connected to the drive motor, and a pulverizing component, wherein the rotating shaft passes through the horizontal tank and is connected to the pulverizing component;

[0016] The crushing component is located on the inner wall of the horizontal tank and has a preset gap with the plow-type stirring blade assembly.

[0017] As a further improvement to the above solution, the horizontal tank is also equipped with a sampler, which can be pulled out and installed on the side end face of the horizontal tank.

[0018] As a further improvement to the above solution, the top of the horizontal tank is also provided with an exhaust gas outlet and a condensate outlet.

[0019] As a further improvement to the above solution, both the horizontal tank and the inspection door are equipped with a heat insulation layer.

[0020] As a further improvement to the above solution, the plow-type stirring blade assembly includes at least two blade units, the blade units are connected to the stirring shaft through blade shafts, and the blade units are symmetrically arranged about the blade shafts or evenly distributed around the blade shafts.

[0021] The blade unit has a continuously varying radius of curvature along its length, forming a sharp front end and a widened rear end. The radius of curvature R1 of the sharp front end (preferably 5-15 mm) is smaller than the radius of curvature R2 of the widened rear end (preferably 30-50 mm), forming an asymmetric plowshare-shaped surface.

[0022] The high curvature design of the front end creates concentrated shear stress during rotation, effectively breaking up material agglomerates. Meanwhile, the large curvature surface of the rear end guides the material to form an axial-radial composite flow, improving mixing uniformity.

[0023] As a further improvement to the above scheme, the thickness of the blade unit increases linearly from the tip to the connecting end of the stirring shaft; preferably, the front thickness t1 is 2~4mm and the connecting end thickness t2 is 8~12mm, so as to balance structural strength and material penetration performance.

[0024] Because this utility model adopts the above technical solutions, the beneficial effects of this application are as follows:

[0025] This utility model provides a horizontal composting fermentation tank, which employs a horizontal tank body and a horizontally arranged stirring mechanism within the tank body. Compared to the vertical layered stirring of a vertical fermentation tank, this utility model, through the synergistic action of the horizontal tank body and the plow-type stirring blade assembly, allows the material to circulate in an axial-radial composite flow field. This avoids material compaction during the stirring process, ensuring thorough fermentation and easy discharge. Furthermore, the arrangement of several plow-type stirring blade assemblies staggered on the stirring shaft, each plow-type stirring blade assembly comprising blade units, each blade unit having a continuously gradually changing radius of curvature along its length, forming a front... The sharp end and widened rear end allow for direct shearing of agglomerates by the sharp end, while the large curvature of the widened rear end guides the material to roll and spread. This not only prevents material compaction but also significantly reduces the probability of material clumping. Combined with the secondary crushing component of the agglomeration device, it solves the problems of bottom accumulation, difficult discharge, and uneven mixing caused by gravity settling in vertical tanks. Furthermore, the side inspection door is more convenient for personnel to enter and maintain than the top inspection port of vertical tanks. Combined with the bottom unloading mechanism, it facilitates the cleaning of residual material inside horizontal tanks, especially in hard-to-reach areas, greatly reducing the amount of residual material in the fermentation tank.

[0026] Furthermore, the gradient thickness design of the blade unit reduces the penetration resistance at the front end while enhancing the torsional resistance of the connection end, extending the life by 2 times compared to traditional blades of equal thickness; the low center of gravity layout of the horizontal tank reduces the vibration amplitude compared to the vertical tank, making it particularly suitable for high filling rate (70%~85%) conditions. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a front view schematic diagram of a horizontal composting fermentation tank disclosed in this utility model;

[0029] Figure 2 This is a side view schematic diagram of a horizontal composting fermentation tank disclosed in this utility model;

[0030] Figure 3 This is a top view schematic diagram of a horizontal composting fermentation tank disclosed in this utility model;

[0031] Figure label:

[0032] 1. Horizontal tank; 2. Agitator; 21. Agitator shaft; 22. Plow-type agitator blade assembly; 3. Discharge mechanism; 4. Inspection door; 5. Crushing device; 51. Drive motor; 52. Rotating shaft; 53. Crushing component; 6. Sampler; 7. Exhaust gas outlet; 8. Condensate outlet; 9. Feeding port.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0037] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] See Figures 1-3 This utility model provides a horizontal composting fermentation tank, including a horizontal tank body 1, with a feeding port 9 at the top of the tank for feeding the material to be fermented; and a discharge mechanism 3 at the bottom of the tank body for conveniently discharging the fermented material; preferably, the discharge mechanism 3 adopts a screw conveyor or gate design to ensure no residual material is discharged.

[0039] The horizontal tank 1 is equipped with a stirring mechanism 2 arranged horizontally along the central axis. The stirring mechanism 2 includes a drive motor 51 and a stirring shaft 21 connected to the drive motor 51. The stirring shaft 21 is equipped with multiple plow-type stirring blade groups 22. Adjacent plow-type stirring blade groups 22 are arranged in an alternating manner to optimize the material flow trajectory.

[0040] It also includes an openable and closable inspection door 4 on one side of the horizontal tank 1; the inspection door 4 adopts a hinged sealing structure, which facilitates internal maintenance; when the horizontal tank 1 needs to be cleaned or the plow-type stirring blade assembly 22 inside needs to be replaced or repaired, it is only necessary to open the inspection door to clean it without dead angles or repair the blade unit.

[0041] This invention employs a horizontal tank 1 and a stirring mechanism 2 horizontally arranged within the horizontal tank 1. Compared to the vertical layered stirring of a vertical fermenter, this invention utilizes the synergistic effect of the horizontal tank 1 and the plow-type stirring blade assembly 22 to circulate the material in an axial-radial composite flow field. This prevents the material from being compacted during the stirring process, ensuring thorough fermentation and easy discharge. Furthermore, the arrangement of several plow-type stirring blade assemblies 22 staggered on the stirring shaft 21, each plow-type stirring blade assembly 22 comprising blade units with continuously varying radii of curvature along its length, forming a sharp front end and a widened rear end, allows the high shear force of the sharp front end to directly break up agglomerates, while the large curvature surface of the widened rear end guides the material to tumble and diffuse. This not only prevents material compaction but also significantly reduces the probability of material clumping.

[0042] In a preferred embodiment, the horizontal composting fermentation tank further includes several clump-breaking devices 5, which are spaced apart on the other side of the horizontal tank body 1 to crush clumps of fermentation material inside the tank. Specifically, in this embodiment, at least three clump-breaking devices 5 are evenly spaced along the axial direction of the horizontal tank body 1. Each clump-breaking device 5 includes a drive motor 51 disposed outside the horizontal tank body 1, a rotating shaft 52 connected to the drive motor 51, and a crushing component 53. The rotating shaft 52 passes through the horizontal tank body 1 and is connected to the crushing component 53. The crushing component 53 is located on the inner wall of the horizontal tank body 1 and has a preset gap with the plow-type stirring blade assembly 22.

[0043] The crushing component 53 is a three-bladed flying knife, which is fixed to the inner end of the rotating shaft 52 via a keyway. The curved surface of the blade maintains a gap of 5-8mm with the inner wall of the tank. The drive motor 51 drives the crushing component 53 to rotate closely against the inner wall through the rotating shaft 52. The minimum working distance between the blade tip trajectory and the plow-type stirring blade is controlled within the range of 15-20mm to achieve secondary crushing of lumps. Preferably, the rotation speed of each lump crushing device 5 is set to 1.2-1.5 times the rotation speed of the plow-type stirring blade group 22, and the rotation direction is opposite to that of the stirring blade. The counter-speed differential cooperation between the flying knife and the plow-type stirring blade forms a shear flow field, which can entrain the material remaining in the "stirring dead zone" in the traditional device into the main circulation, thereby greatly improving the mixing uniformity of the material in the tank.

[0044] The staggered plow-type mixing blades 22, combined with the crushing components 53 of the crushing device 5, perform secondary crushing, which solves the problems of bottom accumulation, difficult discharge, and uneven mixing caused by gravity settling in vertical tanks.

[0045] In a preferred embodiment, the horizontal tank 1 is further provided with a sampler 6, which is retractable and mounted on the side end face of the horizontal tank 1. This allows for convenient removal of the fermenting material from the tank to monitor its fermentation status. Due to the combination of the horizontal tank 1 and the horizontal stirring mechanism 2, the material in the tank is mixed and fermented evenly. Therefore, only one sampler 6 needs to be installed on the side end face of the horizontal tank 1 to monitor the fermentation status of the material inside. Compared to a vertical fermentation tank, which requires multiple samplers 6 to be installed at different positions from top to bottom of the tank to monitor the fermentation status of the material inside, the horizontal composting fermentation tank provided by this utility model only requires one sampler 6.

[0046] In a preferred embodiment, the top of the horizontal tank 1 is also provided with an exhaust gas outlet 7 and a condensate outlet 8; the exhaust gas outlet 7 and the condensate outlet 8 provided on the top of the tank, compared with the vertical tank, avoid clogging the two outlets and can discharge the exhaust gas or condensate in a timely manner.

[0047] In a preferred embodiment, both the horizontal tank 1 and the inspection door 4 are provided with a heat insulation layer. Specifically, both the horizontal tank 1 and the inspection door 4 are covered with a polyurethane heat insulation layer 9 with a thickness of 50~80mm to maintain a stable internal temperature.

[0048] In a preferred embodiment, the plow-type stirring blade assembly 22 includes at least two blade units, which are connected to the stirring shaft 21 via blade shafts. The blade units are either symmetrically arranged about the blade shaft or evenly distributed around the blade shaft. Specifically, when the plow-type stirring blade assembly 22 includes two blade units, the two blade units are symmetrically arranged about the blade shaft. When it includes three or more blade units, the multiple blade units are evenly distributed around the blade shaft.

[0049] The blade unit has a continuously varying radius of curvature along its length, forming a sharp front end and a widened rear end. The radius of curvature R1 of the sharp front end (preferably, R1 is 5~15mm) is smaller than the radius of curvature R2 of the widened rear end (preferably, R2 is 30~50mm), forming an asymmetric plowshare-shaped surface.

[0050] The high curvature design of the front tip of the blade unit generates concentrated shear stress during rotation, effectively breaking up material agglomerates; at the same time, the large curvature surface of the rear widening section guides the material to form an axial-radial composite flow, improving the mixing uniformity.

[0051] In a preferred embodiment, the thickness of the blade unit increases linearly from the tip to the connection end of the stirring shaft 21; preferably, the tip thickness t1 is 2~4mm and the connection end thickness t2 is 8~12mm, so as to balance structural strength and material penetration performance; the gradual thickness design of the blade unit reduces the penetration resistance at the tip and enhances the torsional resistance of the connection end, extending the life by 2 times compared with traditional blades of equal thickness; the low center of gravity layout of the horizontal tank 1 reduces the vibration amplitude compared with the vertical tank, and is particularly suitable for high filling rate (70%~85%) working conditions.

[0052] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A horizontal compost fermentation tank, characterized by, The application relates to a horizontal compost fermentation tank. The horizontal compost fermentation tank comprises a horizontal tank body for containing fermentation materials, a stirring mechanism horizontally arranged on the central axis of the horizontal tank body, a plurality of plough-shaped stirring blade groups arranged on the stirring shaft in sequence, a discharging mechanism arranged at the bottom of the horizontal tank body, and a maintenance door arranged on one side of the horizontal tank body. The horizontal compost fermentation tank further comprises a plurality of fragmentation devices arranged at the other side of the horizontal tank body and used for fragmenting the agglomerated fermentation materials in the tank body. The fragmentation device comprises a driving motor arranged outside the horizontal tank body, a rotating shaft connected with the driving motor, and a fragmentation component connected with the rotating shaft penetrating through the horizontal tank body. The fragmentation component is arranged on the inner wall of the horizontal tank body and has a preset gap with the plough-shaped stirring blade group.

2. The horizontal compost fermentation tank according to claim 1, characterized in that, A sampler is arranged on the side end face of the horizontal tank body.

3. The horizontal compost fermentation tank according to claim 2, characterized in that, A tail gas discharge port and a condensate water discharge port are arranged on the top of the horizontal tank body. The horizontal tank body and the maintenance door are both provided with a heat preservation layer.

4. The horizontal compost fermentation tank according to any one of claims 1-3, characterized in that, The plough-shaped stirring blade group comprises at least two blade units connected with the stirring shaft through a blade shaft, and the blade units are symmetrically arranged about the blade shaft or uniformly arranged around the blade shaft.

5. The horizontal compost fermentation tank according to any one of claims 1-3, characterized in that, The blade unit has a continuously changing curvature radius along the length direction, forms a front end sharp portion and a rear end widened portion, and the curvature radius R1 of the front end sharp portion is smaller than the curvature radius R2 of the rear end widened portion, thereby forming an asymmetric plough head-shaped curved surface.

6. The horizontal compost fermentation tank according to any one of claims 1-3, characterized in that, The thickness of the blade unit linearly increases from the front end sharp portion to the connecting end of the stirring shaft.

7. The horizontal compost fermentation tank according to any one of claims 1-3, characterized in that, ​ ​ 8. The horizontal compost fermentation tank according to claim 7, characterized in that, ​

Images