Long-shaft stirrer

Abstract

The utility model relates to a long shaft stirrer, including stirring shaft, stirring structure, drive device and second bracing frame, drive device includes first bracing frame, install motor on the first bracing frame, the top of second bracing frame is fixedly connected with fixed plate, the center of fixed plate is provided with the bearing seat, the bearing seat is fixed in the bearing seat. One end of the stirring shaft is fixedly connected with the output end of the motor, the other end of the stirring shaft is rotationally connected to the interior of the bearing seat, the stirring structures are perpendicular to the stirring shaft and fixed to the side face of the stirring shaft, the stirring structures are spirally distributed at equal intervals in the axial direction of the stirring shaft, and the included angle between every two adjacent stirring structures ranges from 40 degrees to 50 degrees; the utility model is suitable for the scenes of high-concentration anaerobic fermentation and treatment of a large amount of solid organic waste raw materials, and has the advantages of stronger adaptability, high stirring efficiency in unit volume and wide range.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas engineering equipment, in particular to a long-shaft agitator. Background Art

[0002] At present, in order to reduce the construction cost and construction period of domestic reactors, the volume of reactors is getting larger and larger, and the amount of materials processed at one time is also increasing. However, the biogas engineering equipment that can effectively match large reactors has not been able to keep up.

[0003] The lengths of most agitators in domestic reactors are mostly between 2 and 5 meters. When the existing agitators are applied to reactors with a large pool capacity load of 6000 cubic meters or a diameter of more than 30 meters, due to the insufficient length of the agitator, the reactants in the center of the mixing tank cannot be effectively mixed and agitated. Under the condition of insufficient and untimely mixing for a long time, the materials are extremely easy to deposit and float and form a crust, which affects the production efficiency and causes waste of resources. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a long-shaft agitator to solve the problem of mismatch of traditional agitators.

[0005] The long-shaft agitator of the utility model includes a stirring shaft, a stirring structure, a driving device and a second support frame. The driving device includes a first support frame, and a motor is installed on the first support frame. The top of the second support frame is fixedly connected with a fixing plate, a bearing seat is arranged in the center of the fixing plate, one end of the stirring shaft is fixedly connected with the output end of the motor, and the other end is rotatably connected to the inside of the bearing seat;

[0006] The stirring structure is perpendicular to the stirring shaft and is fixed on the side surface of the stirring shaft, and the stirring structures are distributed in an equidistant spiral shape along the axial direction of the stirring shaft, and the included angle between adjacent stirring structures is 40°-50°.

[0007] As a further improvement of the utility model, the stirring structure includes a slurry arm and a stirring blade. One end of the slurry arm is fixedly connected to the surface of the stirring shaft, and the other end of the slurry arm is fixedly connected with a stirring blade.

[0008] As a further improvement of the utility model, the slurry arm includes a square tube and a U-shaped plate. One end of the square tube is fixedly connected with a backing plate, the backing plate and the U-shaped plate are fixedly connected by a first bolt, the U-shaped plate is inserted into the surface of the stirring shaft, and the backing plate, the U-shaped plate and the stirring shaft are fixedly connected by a second bolt.

[0009] As a further improvement of the utility model, a plurality of connecting holes are symmetrically opened on both sides of the other end of the square tube, and a double-headed screw is arranged between two corresponding connecting holes for installing the stirring blade.

[0010] As a further improvement of the present utility model, the stirring blades include a first blade, a second blade and a third blade. The first blade is located above the second blade, and the third blade is fixedly connected to the side surface between the first blade and the second blade.

[0011] As a further improvement of the present utility model, the length of the first blade is less than that of the second blade, and one sides of the first blade and the second blade away from the third blade are on the same horizontal plane. A bending portion is integrally formed at one end of the third blade close to the second blade.

[0012] As a further improvement of the present utility model, first through holes are formed on the surface of the first blade, second through holes are formed on the surface of the second blade. The square tube is inserted between the first blade and the second blade, and both ends of the double-headed screw respectively pass through the first through holes and the second through holes and are provided with nuts.

[0013] As a further improvement of the present utility model, a speed reducer and a torque limiter are installed on the motor.

[0014] As a further improvement of the present utility model, support feet are fixedly connected to both sides of the second support frame.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. The stirring structure of the present utility model is perpendicular to the stirring shaft and fixed on the side surface of the stirring shaft, and the stirring structures are distributed in an equidistant spiral shape along the axial direction of the stirring shaft. The included angle between adjacent stirring structures is 40° - 50°. The compact layout and continuous setting of the stirring structures enable the internal flow field of the reactor to be more stable during the rotation of the stirring shaft. The reactor substrate is stirred more fully and evenly, and the materials can be degraded and fermented more efficiently, greatly improving the production efficiency of the giant reactor. The present utility model is applicable to the scenarios of high-concentration anaerobic fermentation and treatment of a large amount of solid organic waste raw materials, with stronger adaptability, high stirring efficiency per unit volume, and a wide range.

[0017] 2. Through the U-shaped plate arranged at the bottom of the square tube and the setting of the second bolt in the present utility model, it is convenient for the staff to install between the slurry arm and the stirring shaft. Through the setting of the first blade and the second blade, in cooperation with the double-headed screw arranged on the square tube and the first through holes arranged on the first blade and the second through holes arranged on the second blade, it is convenient for the staff to install the stirring blades. Through the setting of the bending portion below the third blade, the surface area of the third blade is increased, and the stirring efficiency can be improved. Description of the Drawings

[0018] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 is a schematic three-dimensional structure diagram of the whole of the utility model;

[0020] Figure 2 is a schematic three-dimensional structure diagram of the stirring mechanism of the utility model;

[0021] Figure 3 is a schematic three-dimensional structure diagram of the paddle arm of the utility model;

[0022] Figure 4 is a schematic three-dimensional structure diagram of the stirring blade of the utility model;

[0023] Figure 5 is a schematic three-dimensional structure diagram of the driving device of the utility model;

[0024] Figure 6 is a schematic structure diagram of the second support frame of the utility model;

[0025] In the figure: 1, stirring shaft; 2, paddle arm; 201, square pipe; 202, backing plate; 203, U-shaped plate; 204, first bolt; 205, second bolt; 206, double-headed screw; 3, stirring blade; 301, first blade; 302, first through hole; 303, second blade; 304, second through hole; 305, third blade; 4, first support frame; 5, motor; 6, reducer; 7, torque limiter; 8, second support frame; 9, fixing plate; 10, bearing seat; 11, support foot. Detailed implementation manners

[0026] The following will disclose multiple implementation manners of the present utility model with illustrations. For the sake of clarity, many physical details will be described together in the following narrative. However, it should be understood that these physical details are not used to limit the present utility model. That is to say, in some implementation manners of the present utility model, these physical details are not necessary. In addition, for the sake of simplifying the illustrations, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0027] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of this technology, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0029] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] See also Figure 1-6 The long-axis agitator of the utility model comprises a stirring shaft 1, a stirring structure, a driving device and a second support frame 8. The driving device comprises a first support frame 4, a motor 5 is mounted on the first support frame 4, support feet 11 are fixedly connected to both sides of the second support frame 8, a fixing plate 9 is fixedly connected to the top of the second support frame 8, a bearing seat 10 is arranged in the center of the fixing plate 9, one end of the stirring shaft 1 is fixedly connected to the output end of the motor 5, and the other end is rotatably connected to the inside of the bearing seat 10, the stirring structure is perpendicular to the stirring shaft 1 and fixed to the side of the stirring shaft 1, and the stirring structure is equidistantly spirally distributed along the axial direction of the stirring shaft 1, and the angle between adjacent stirring structures is 40°-50°.

[0031] In a preferred embodiment, eight stirring structures are provided, and the eight stirring structures are distributed in a spiral manner with equal distances along the axial direction of the stirring shaft 1 , and the angle difference between two adjacent stirring structures is 45°.

[0032] By setting the position of the stirring structure, the stirring structure has a compact and continuous layout, so that when the stirring shaft 1 rotates, the flow field inside the reactor can be more stable, the reactor substrate can be stirred more fully and evenly, and the material can be degraded and fermented more efficiently, thereby greatly improving the production efficiency of the giant reactor.

[0033] In this embodiment, the stirring structure includes a paddle arm 2 and a stirring blade 3 , one end of the paddle arm 2 is fixedly connected to the surface of the stirring shaft 1 , and the other end of the paddle arm 2 is fixedly connected to the stirring blade 3 .

[0034] Specifically, for the convenience of docking between the pulp arm 2 and the stirring shaft 1, the pulp arm 2 includes a square tube 201 and a U-shaped plate 203. One end of the square tube 201 is fixedly connected with a backing plate 202. The backing plate 202 and the U-shaped plate 203 are fixedly connected by a first bolt 204. The U-shaped plate 203 is inserted on the surface of the stirring shaft 1. The backing plate 202, the U-shaped plate 203 and the stirring shaft 1 are fixedly connected by a second bolt 205.

[0035] Through the above technical solution, the staff can dock the square tube 201 and the stirring shaft 1 through the second bolt 205.

[0036] In this embodiment, for the convenience of docking between the square tube 201 and the stirring blade 3, a plurality of connection holes are symmetrically arranged on both sides of the other end of the square tube 201. A double-headed screw 206 is arranged between two corresponding connection holes for installing the stirring blade 3. A first through hole 302 is arranged on the surface of the first blade 301, and a second through hole 304 is arranged on the surface of the second blade 303. The square tube 201 is inserted between the first blade 301 and the second blade 303, and both ends of the double-headed screw 206 pass through the first through hole 302 and the second through hole 304 respectively and are provided with nuts.

[0037] Through the above technical solution, the stirring blade 3 can be inserted at the end of the square tube 201, and the stirring blade 3 is fixedly installed by the double-headed screw 206, which is very convenient to assemble.

[0038] In this embodiment, to improve the stirring efficiency of the stirring blade 3, the stirring blade 3 includes a first blade 301, a second blade 303 and a third blade 305. The first blade 301 is located above the second blade 303. The third blade 305 is fixedly connected to the side surface between the first blade 301 and the second blade 303. In this embodiment, the length of the first blade 301 is less than the length of the second blade 303, and one sides of the first blade 301 and the second blade 303 away from the third blade 305 are on the same horizontal plane. A bending part is integrally formed at one end of the third blade 305 close to the second blade 303.

[0039] Through the bending part arranged at the bottom of the third blade 305 and the setting of the positional relationship among the first blade 301, the second blade 303 and the third blade 305, the surface area of the stirring blade 3 is large enough to stir the materials more fully, thereby improving the stirring efficiency.

[0040] In this embodiment, a speed reducer 6 and a torque limiter 7 are installed on the motor 5, the speed reducer and the torque limiter 7.

[0041] It should be noted that the reducer 6 is directly connected to the motor 5 through a coupling. The output end of the reducer 6 is fixedly connected to the stirring shaft 1. The connection mode between the reducer 6 and the torque limiter 7 is mainly divided into direct or indirect connection. The direct connection means that the reducer 6 and the torque limiter 7 are directly physically connected through a flange or a shaft. At this time, the output shaft of the reducer 6 is connected to both the input shaft of the torque limiter 7 and the load. The advantage of this connection mode is simple and adjustable.

[0042] The indirect connection is mainly realized by a coupling. The coupling connects the output shaft of the reducer 6 and the input shaft of the torque limiter 7 as well as the connection between the output shaft and the load, and operates through the coupling to limit the torque transmission between the input shaft and the output shaft. This connection mode provides better protection for the reducer 6.

[0043] The above description is only for the implementation mode of the present utility model and is not intended to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. Long-axis agitator, comprising an agitator shaft (1), an agitation structure, a drive device, and a second support frame (8), characterized in that: The driving device includes a first support frame (4), on which a motor (5) is installed. The top of the second support frame (8) is fixedly connected with a fixing plate (9). A bearing seat (10) is arranged in the center of the fixing plate (9). One end of the stirring shaft (1) is fixedly connected with the output end of the motor (5), and the other end is rotatably connected to the inside of the bearing seat (10). The stirring structure is perpendicular to the stirring shaft (1) and fixed to the side surface of the stirring shaft (1), and the stirring structure is distributed in an equidistant spiral shape along the axial direction of the stirring shaft (1), and the included angle between adjacent stirring structures is 40°-50°.

2. The long-axis stirrer according to claim 1, characterized in that: The stirring structure includes a slurry arm (2) and a stirring blade (3). One end of the slurry arm (2) is fixedly connected to the surface of the stirring shaft (1), and the other end of the slurry arm (2) is fixedly connected with a stirring blade (3).

3. The long-axis agitator according to claim 2, wherein: The slurry arm (2) includes a square tube (201) and a U-shaped plate (203). One end of the square tube (201) is fixedly connected with a backing plate (202). The backing plate (202) and the U-shaped plate (203) are fixedly connected by a first bolt (204). The U-shaped plate (203) is inserted into the surface of the stirring shaft (1), and the backing plate (202), the U-shaped plate (203) and the stirring shaft (1) are fixedly connected by a second bolt (205).

4. The long-axis agitator according to claim 3, characterized in that: A plurality of connection holes are symmetrically arranged on both sides of the other end of the square tube (201). A double-headed screw (206) is arranged between two corresponding connection holes for installing the stirring blade (3).

5. The long-axis stirrer according to claim 4, wherein: The stirring blade (3) includes a first blade (301), a second blade (303) and a third blade (305). The first blade (301) is located above the second blade (303), and the third blade (305) is fixedly connected to the side surface between the first blade (301) and the second blade (303).

6. The long-axis agitator according to claim 5, characterized in that: The length of the first blade (301) is less than the length of the second blade (303), and the sides of the first blade (301) and the second blade (303) away from the third blade (305) are on the same horizontal plane. A bending part is integrally formed at one end of the third blade (305) close to the second blade (303).

7. The long-axis stirrer according to claim 5, characterized in that: A first through hole (302) is formed on the surface of the first blade (301), and a second through hole (304) is formed on the surface of the second blade (303). The square tube (201) is inserted between the first blade (301) and the second blade (303), and both ends of the double-headed screw (206) respectively pass through the first through hole (302) and the second through hole (304) and are provided with nuts.

8. The long-axis agitator according to claim 1, wherein: A speed reducer (6) and a torque limiter (7) are installed on the motor (5).

9. The long-axis stirrer according to claim 1, characterized in that: Support feet (11) are fixedly connected to both sides of the second support frame (8).

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