Slag removal device for biological fermentation tank

Abstract

A biological fermentation tank slag removing device comprises a fermentation tank, a stirring rod and a stirring drive, a scraper blade adjusting assembly is arranged in the fermentation tank and connected with a shear fork type telescopic frame, and a scraper blade is arranged at the telescopic end of the shear fork type telescopic frame. According to the utility model, the bidirectional screw rod is arranged in the stirring rod and drives the movable seat to move relatively, so that the shear fork type telescopic frame is driven to stretch out and draw back, and the scrapers on the shear fork type telescopic frame can be tightly connected with or far away from the inner wall of the fermentation tank, so that the scrapers can be attached to the inner walls of the fermentation tanks with different sizes; a rotation adjusting drive of the two-way screw rod is fixed on the stirring rod, so that when the stirring rod is driven by the stirring drive to rotate, the scraping plate can circumferentially slide along the inner wall of the fermentation tank, and then residues on the inner wall of the fermentation tank are scraped; a rotating shaft is arranged outside the stirring rod through a U-shaped frame, stirring blades are arranged on the periphery of the rotating shaft, internal raw materials are stirred by the stirring blades to rotate along the periphery of the rotating shaft and rotate along the periphery of the stirring rod, and the stirring effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of fermentation tank technology, and in particular to a slag removal device for a biological fermentation tank. Background Technology

[0002] Bioreactors are production facilities that utilize bioengineering technology. They produce various industrial solvents and chemical raw materials through the fermentation of carbohydrates by microorganisms. Generally, they are classified into ventilated fermenters and anaerobic fermenters based on their oxygen demand. The main body is typically a cylindrical structure made of stainless steel, and they come in various sizes. During long-term use, residues accumulate on the inner walls of bioreactors and harden over time. Therefore, bioreactors are periodically cleaned using a cleaning system.

[0003] A search revealed a Chinese patent (patent number: CN216786141U) that discloses a fermentation tank device for easy cleaning of the stirring device, including a tank body, a stirring rod, and a water spraying device. The tank body is provided with supporting legs, and the stirring rod is installed at the top of the tank body. The stirring rod has stirring blades, which can be easily cleaned during use. The stirring rod and stirring blades installed inside can easily perform stirring operations, so that the fermented materials inside are fully mixed. The gas outlet pipe installed at the top can easily release the gas generated during the fermentation process.

[0004] The above solution has many advantages, but it also has the following drawbacks: it cannot fit the scraper to the inner wall of the mixing tank for mixing tanks of different sizes.

[0005] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a slag removal device for bio-fermentation tanks to solve the above problems.

[0006] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and for the convenience of those skilled in the art to understand it. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0007] To overcome the shortcomings of the prior art, the present invention discloses a slag removal device for a biological fermentation tank, which solves the problem of difficulty in fitting the scraper to the inner wall of a mixing tank of different sizes.

[0008] This utility model discloses a slag removal device for a biological fermentation tank, including a fermentation tank. A stirring rod is arranged along the central axis inside the fermentation tank. A stirring drive is located at the top of the fermentation tank, and the moving end of the stirring drive is connected to the stirring rod. A scraper adjustment assembly is located inside the fermentation tank. The scraper adjustment assembly includes a bidirectional lead screw movably arranged axially inside the stirring rod. One end of the bidirectional lead screw is connected to the moving end of a rotary adjustment drive, which is fixedly connected to the stirring rod. Moving seats are helically connected to both the positive and negative threads of the bidirectional lead screw. The corresponding sides of the two moving seats are connected to the adjustment ends of a scissor-type telescopic frame. A scraper is detachably connected to the telescopic end of the scissor-type telescopic frame. At least one U-shaped frame is provided on the outer side of the stirring rod. A rotating shaft is rotatably connected to the U-shaped frame in the vertical direction, and several stirring blades are provided on the outer circumference of the rotating shaft.

[0009] Preferred technical solution: The scissor-type telescopic frame includes a positioning rod, with first connecting rods symmetrically hinged to the upper and lower sides of the positioning rod. The distal ends of the two first connecting rods are respectively hinged to two movable seats. A second connecting rod is hinged to each of the two first connecting rods. The second connecting rod is provided with a guide groove. The two ends of the positioning rod are respectively slidably connected to the inner wall of the corresponding guide groove. A slider is hinged to the distal end of the second connecting rod. The scraper is provided with a sliding groove on the upper and lower sides. The slider is slidably connected in the sliding groove. A first spring is provided between the upper slider and the upper end of the sliding groove. A second spring is provided between the lower slider and the lower end of the sliding groove, so that the scraper can move up and down in the vertical direction with buffer, improving the tightness of the scraper's fit with the inner wall of the fermenter.

[0010] Preferred technical solution: The shape of the scraper is consistent with the cross-sectional shape of the inner wall of the fermenter, which facilitates its fit with the inner wall of the fermenter.

[0011] Preferred technical solution: Both sides of the stirring rod are provided with strip-shaped clearance openings that are compatible with the moving seat, so as to avoid interference with the moving seat and the scissor-type telescopic frame. At the same time, the side walls of the strip-shaped clearance openings are used to push the moving seat and the scissor-type telescopic frame to move together with the stirring rod, so as to make the movement of the scraper more stable.

[0012] Preferred technical solution: There are two sets of scrapers, which are symmetrically installed on both sides of the moving base through scissor-type telescopic frames to ensure the force balance on both sides of the slag removal device and avoid the fermenter shaking due to slag removal.

[0013] Preferred technical solution: A feed pipe is fixedly installed on one side of the top of the fermentation tank, and a discharge pipe is fixedly connected to the bottom of the fermentation tank, which facilitates the entry and exit of materials and the cleaning of the inside of the fermentation tank.

[0014] Preferred technical solution: A fixing ring is fixedly installed on the outside of the fermenter, and several support legs are fixedly installed circumferentially at the bottom of the fixing ring. A reinforcing rod is fixedly connected between the support legs and the bottom of the fermenter to improve the stability of the fermenter and prevent shaking during the slag removal and stirring process.

[0015] Preferred technical solution: Both the stirring drive and the rotation adjustment drive are electric motors.

[0016] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0017] This utility model discloses a slag removal device for a bio-fermentation tank. A bidirectional lead screw is installed inside the stirring rod, which drives a moving seat to move relative to the stirring rod, thereby causing a scissor-type telescopic frame to extend and retract. This allows the scraper on the scissor-type telescopic frame to either come into contact with or move away from the inner wall of the fermentation tank, enabling it to fit within fermentation tanks of different sizes. The rotation adjustment drive of the bidirectional lead screw is fixed to the stirring rod, allowing the scraper to slide circumferentially along the inner wall of the fermentation tank when the stirring drive rotates the stirring rod, thus scraping away the residue. A rotating shaft is installed on the outside of the stirring rod via a U-shaped frame, with stirring blades on the outer circumference of the shaft. The internal raw materials are agitated by the stirring blades and rotate along the outer circumference of the shaft and simultaneously along the outer circumference of the stirring rod, improving the stirring effect and reducing the possibility of residue adhering to the inner wall. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a slag removal device for a bio-fermentation tank according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a slag removal device for a bio-fermentation tank according to the present invention;

[0021] Figure 3 This is a schematic diagram of the scraper adjustment assembly, scissor-type telescopic frame, and scraper in this utility model.

[0022] Figure 4 This is a schematic diagram of the connection structure between the second connecting rod and the scraper in this utility model.

[0023] In the attached diagrams above, 1. Fermentation tank; 11. Feed pipe; 12. Discharge pipe; 13. Fixing ring; 14. Support leg; 15. Reinforcing rod; 2. Stirring rod; 21. Strip-shaped clearance opening; 3. Stirring drive; 4. Scraper adjustment assembly; 41. Two-way lead screw; 42. Rotary adjustment drive; 43. Moving seat; 5. Scissor-type telescopic frame; 51. Positioning rod; 52. First connecting rod; 53. Second connecting rod; 53a. Guide slot hole; 54. Sliding block; 6. Scraper; 61. Slide groove; 62. First spring; 63. Second spring; 7. U-shaped frame; 8. Rotating shaft; 9. Stirring blade. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0028] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Example:

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a biological fermentation tank slag removal device, including a fermentation tank 1. A stirring rod 2 is provided inside the fermentation tank 1 along the central axis. A stirring drive 3 is provided on the top of the fermentation tank 1. The moving end of the stirring drive 3 is connected to the stirring rod 2. A scraper adjustment assembly 4 is provided inside the fermentation tank 1. The scraper adjustment assembly 4 includes a bidirectional lead screw 41 that is axially movably arranged inside the stirring rod 2. One end of the bidirectional lead screw 41 is connected to the moving end of a rotary adjustment drive 42. The rotary adjustment drive 42 is fixedly connected to the stirring rod 2. A movable seat 43 is helically connected to both the positive and negative threads of the bidirectional lead screw 41. The two movable seats 43 are connected to the adjustment ends of a scissor-type telescopic frame 5 on their corresponding sides. A scraper 6 is detachably connected to the telescopic end of the scissor-type telescopic frame 5. Two symmetrical U-shaped frames 7 are provided on the outer side of the stirring rod 2. A rotating shaft 8 is rotatably connected to the U-shaped frame 7 along the vertical direction. Several stirring blades 9 are provided on the outer periphery of the rotating shaft 8.

[0032] The method and principle of this utility model are as follows: At the start of operation, the rotary adjustment drive 42 drives the bidirectional lead screw 41 to rotate clockwise or counterclockwise, causing the moving seats 43 to approach or move away from each other along the bidirectional lead screw 41. The moving seats 43 then drive the scissor-type telescopic frame 5 to extend and retract. The scissor-type telescopic frame 5 drives the scraper 6 to move towards or away from the inner wall of the fermentation tank 1, ultimately making the scraper 6 fit against the inner wall of the fermentation tank 1 of different sizes. Next, the stirring drive 3 is activated, driving the stirring rod 2 to rotate. The stirring rod 2 then... The scraper 6 scrapes away residue from the inner wall of the fermenter 1. At the same time, the stirring rod 2 drives the U-shaped frame 7 and its rotating shaft 8 to move along the outer periphery of the stirring rod 2. During the movement, the stirring blades 9 of the rotating shaft 8 are rotated around the rotating shaft 8 due to the force of the raw material moving forward. This causes the raw material in the fermenter 1 to move circumferentially along the stirring rod 2 and also circumferentially along the rotating shaft 8 under the action of the biological fermenter cleaning device. This reduces the pressure on the inner wall of the fermenter 1 during the stirring process, thereby reducing the possibility of residue adsorption on the inner wall of the fermenter 1.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, to improve the slag removal effect of the fermenter, the scissor-type telescopic frame 5 includes a positioning rod 51. First connecting rods 52 are symmetrically hinged to the upper and lower sides of the positioning rod 51. The distal ends of the two first connecting rods 52 are respectively hinged to two movable seats 43. A second connecting rod 53 is hinged to each of the two first connecting rods 52. The second connecting rod 53 is provided with guide slots 53a. The two ends of the positioning rod 51 are slidably connected to the inner walls of the corresponding guide slots 53a. A slider 54 is hinged to the distal end of the second connecting rod 53. A scraper... The upper and lower sides of the scraper 6 are provided with sliding grooves 61, and the slider 54 is slidably connected in the sliding grooves 61. A first spring 62 is provided between the upper slider 54 and the upper end of the sliding groove 61, and a second spring 63 is provided between the lower slider 54 and the lower end of the sliding groove 61. This allows the scraper 6 to be buffered up and down, so that the upper and lower ends of the scraper 6 can fit more tightly with the upper and lower ends of the fermenter 1, and avoids gaps between the inner wall of the fermenter 1 and the scraper 6 due to vertical positioning deviation during installation.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, in order to further improve the slag removal effect of the fermenter, the shape of the scraper 6 is consistent with the cross-sectional shape of the inner wall of the fermenter 1, so that the residue adsorbed on the upper and lower end surfaces of the fermenter 1 can be cleaned.

[0035] like Figure 1 , Figure 2 and Figure 3As shown, in order to make the movement of the scraper more stable, both sides of the stirring rod 2 are provided with strip-shaped clearance openings 21 that are adapted to the moving seat 43. The strip-shaped clearance openings 21 provide space for the movement of the moving seat 43 and the scissor-type telescopic frame 5. At the same time, the side walls of the strip-shaped clearance openings 21 are used to push the moving seat 43 and the scissor-type telescopic frame 5 to move together with the stirring rod 2.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, in order to make the movement of the scraper more stable, there are two sets of scrapers 6, which are symmetrically installed on both sides of the movable seat 43 by means of scissor-type telescopic frame 5.

[0037] like Figure 1 and Figure 2 As shown, to facilitate the entry and exit of materials and the cleaning of the inside of the fermentation tank, a feed pipe 11 is fixedly installed on one side of the top of the fermentation tank 1, and a discharge pipe 12 is fixedly connected to the bottom of the fermentation tank 1.

[0038] like Figure 1 As shown, in order to improve the stability of the fermentation tank, a fixing ring 13 is fixedly installed on the outside of the fermentation tank 1. Several support legs 14 are fixedly installed on the bottom of the fixing ring 13 along the circumferential direction. A reinforcing rod 15 is fixedly connected between the support legs 14 and the bottom of the fermentation tank 1.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, to ensure the stability of the slag removal effect in the fermenter, both the stirring drive 3 and the rotary adjustment drive 42 are electric motors.

[0040] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biological fermentation tank slag removal device, comprising a fermentation tank (1), wherein a stirring rod (2) is provided along the central axis inside the fermentation tank (1), and a stirring drive (3) is provided at the top of the fermentation tank (1), wherein the moving end of the stirring drive (3) is connected to the stirring rod (2) for transmission, characterized in that: The fermenter (1) is provided with a scraper adjustment assembly (4). The scraper adjustment assembly (4) includes a bidirectional lead screw (41) that is axially movable inside the stirring rod (2). One end of the bidirectional lead screw (41) is connected to the moving end of the rotary adjustment drive (42). The rotary adjustment drive (42) is fixedly connected to the stirring rod (2). The bidirectional lead screw (41) has a moving seat (43) that is helically connected to both the positive and negative threads. The two moving seats (43) are connected to the adjustment end of the scissor-type telescopic frame (5) on their corresponding sides. The telescopic end of the scissor-type telescopic frame (5) is detachably connected to a scraper (6). At least one U-shaped frame (7) is provided on the outside of the stirring rod (2). A rotating shaft (8) is rotatably connected to the U-shaped frame (7) in the vertical direction. Several stirring blades (9) are provided on the outer periphery of the rotating shaft (8).

2. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: The scissor-type telescopic frame (5) includes a positioning rod (51). The upper and lower sides of the positioning rod (51) are symmetrically hinged with first connecting rods (52). The far ends of the two first connecting rods (52) are respectively hinged to the two moving seats (43). The two first connecting rods (52) are each hinged with a second connecting rod (53). The second connecting rod (53) is provided with a guide slot (53a). The two ends of the positioning rod (51) are respectively slidably connected to the inner wall of the corresponding guide slot (53a). The far end of the second connecting rod (53) is hinged with a slider (54). The upper and lower sides of the scraper (6) are provided with a sliding groove (61). The slider (54) is slidably connected in the sliding groove (61). The upper side of the slider (54) is provided with a first spring (62) between the upper end of the sliding groove (61) and the upper end of the sliding groove (61). The lower side of the slider (54) is provided with a second spring (63) between the lower end of the sliding groove (61).

3. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: The shape of the scraper (6) is consistent with the cross-sectional shape of the inner wall of the fermenter (1).

4. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: Both sides of the stirring rod (2) are provided with strip-shaped clearance openings (21) that are compatible with the moving seat (43).

5. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: The scraper (6) has two sets and is symmetrically installed on both sides of the movable seat (43) via the scissor-type telescopic frame (5).

6. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: A feed pipe (11) is fixedly installed on one side of the top of the fermentation tank (1), and a discharge pipe (12) is fixedly connected to the bottom of the fermentation tank (1).

7. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: A fixing ring (13) is fixedly installed on the outside of the fermentation tank (1). Several support legs (14) are fixedly installed on the bottom of the fixing ring (13) along the circumferential direction. A reinforcing rod (15) is fixedly connected between the support legs (14) and the bottom of the fermentation tank (1).

8. The slag removal device for a bio-fermentation tank according to claim 1, characterized in that: Both the stirring drive (3) and the rotation adjustment drive (42) are motors.

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