A defoaming device for biological fermentation

Abstract

The present invention belongs to the field of biological fermentation technology, and particularly relates to a defoaming device for biological fermentation, which comprises a fixed seat installed on the stirring shaft of a biological fermentation tank. An electricity connection mechanism is arranged at the upper end of the fixed seat, a sliding seat is arranged on the outer side of the fixed seat, and a connecting rod is installed on the outer side of the sliding seat. The problem to be solved by the present invention is that the pressure difference and vibration generated during the use of the current defoaming device will damage the fermentation tank, thus affecting the service life of the fermentation tank, and the defoaming efficiency of the bubbles at the central position is relatively low during defoaming. By designing that the fixed seat is installed on the stirring shaft, the sliding seat is slidably installed on the fixed seat, the sliding seat is connected to the moving seat through the connecting rod, when the stirring shaft of the fermentation tank rotates, the moving seat is driven to rotate, the defoaming head is used to absorb the bubbles at the edge, and the middle part is blown with air through the connecting rod and the sliding seat, so as to blow the middle bubbles to the edge, thereby facilitating the full elimination of the middle and edge bubbles.

Description

Technical Field

[0001] The present invention belongs to the technical field of biological fermentation, and particularly relates to a defoaming device for biological fermentation. Background Art

[0002] The main fermentation defoaming methods include the following: manual stirring: constantly stir with a spoon or a stirrer to gradually eliminate the bubbles; funnel method: pour the fermentation broth into a funnel and let it flow down naturally, and the bubbles will rise along the funnel wall and escape; separation method: pour the fermentation broth obliquely into another container to separate gases such as oxygen and carbon dioxide, and then pour the liquid back to its original position; in-tank defoaming: promote the foam to break through mechanical vibration or pressure change in the fermentation tank; out-of-tank defoaming: lead the foam out of the fermentation tank, accelerate it through a nozzle or utilize centrifugal force to eliminate the foam, and then return the liquid to the fermentation tank.

[0003] Currently, mechanical defoaming methods usually adopt mechanical vibration, pressure change, suction, etc. The pressure difference and vibration generated during use will damage the fermentation tank, thus affecting the service life of the fermentation tank. Moreover, the defoaming efficiency of the bubbles in the central position is relatively low during defoaming. Therefore, it is necessary to design a defoaming device for biological fermentation to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a defoaming device for biological fermentation to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A defoaming device for biological fermentation, including a fixed seat installed on the stirring shaft of a biological fermentation tank. An electricity connection mechanism is arranged at the upper end of the fixed seat. A sliding seat is arranged on the outside of the fixed seat. A connecting rod is installed on the outside of the sliding seat. A moving seat is arranged at one end of the connecting rod. A defoaming head is arranged on one side of the moving seat. A guiding seat is arranged on the lower side of the moving seat. A floating seat is arranged on the lower side of the guiding seat;

[0006] The sliding seat includes a sliding ring. An internal channel is arranged inside the sliding ring. One end of the connecting rod is communicated with the inside of the internal channel. A blowing pipe is arranged on the lower side of the sliding ring. The upper end of the blowing pipe is communicated with the inside of the internal channel;

[0007] The moving seat includes a mounting seat. An air suction pump is arranged inside the mounting seat. One end of the air suction pump is connected to one end of the defoaming head. The other end of the air suction pump is connected to one end of the connecting rod;

[0008] The defoaming head includes an installation pipe installed on the installation base, and the installation pipe is connected to one end of the suction pump. One end of the installation pipe is provided with an air suction pipe, one end of the air suction pipe is a filter head, and a defoaming needle is arranged on the inner wall of the air suction pipe.

[0009] Preferably, the fixing base includes a fixing cylinder fixed on the stirring shaft of the fermentation tank. A guiding groove is arranged on the surface of the fixing cylinder, and a sliding guiding block is arranged on the inner wall of the sliding ring. The sliding ring is slidably installed on the fixing cylinder through the sliding guiding block and the guiding groove.

[0010] Preferably, the air blowing pipes are uniformly installed on the lower surface of the sliding ring. The lower end outlet of the air blowing pipe is set to be inclined, and the inclination angle of the lower end of the air blowing pipe corresponds to the position of the guiding seat.

[0011] Preferably, a rotating fan is rotatably installed in the inner side of the installation pipe through a cross-shaped frame. The rotating fan is provided with a defoaming rotating frame through a fixing shaft, and the fixing shaft is rotatably installed in the installation pipe through the cross-shaped frame.

[0012] Preferably, a moving frame is arranged on the lower side of the installation base. An auxiliary gear is arranged inside the moving frame, and an auxiliary rack is arranged at the inner bottom of the guiding seat. The auxiliary gear is engaged with the auxiliary rack.

[0013] Preferably, a positioning frame is fixedly installed on the outer side of the installation base. A sliding ball is arranged at the lower end of the positioning frame. The positioning frame is slidably installed on the outer side of the guiding seat through the sliding ball.

[0014] Preferably, the guiding seat includes a guiding piece. The sliding ball slides on the surface of the guiding piece. A guiding frame is arranged on one side of the guiding piece. The auxiliary rack is installed inside the guiding frame. The shape of the guiding frame is an isosceles trapezoid. Connecting protrusions and connecting grooves are arranged at both ends of the guiding piece. The connecting protrusions and the connecting grooves are mutually engaged and fixed by screws.

[0015] Preferably, the floating seat includes an installation frame. An airbag ring is arranged on the outer side of the installation frame. Installation protrusions are arranged on the surface of the installation frame. Installation slots are arranged inside the airbag ring. The airbag ring is engaged with the outer side of the installation frame through the installation protrusions and the installation slots. The installation frame includes a main frame body and an installation head arranged at the upper end of the main frame body. The installation head is fixed on the lower side of the guiding frame.

[0016] Preferably, the connecting rod includes a main cylinder and a sliding rod slidably installed at one end of the main cylinder. A threaded seat is arranged at one end of the sliding rod. The threaded seat is screwed into the main cylinder through threads.

[0017] Preferably, the power connection mechanism includes a power connection tube installed inside the stirring shaft and a power connection wire installed inside the power connection tube. The power connection wire spirally passes through the inside of the connecting rod. The upper end of the power connection tube is fixedly installed with a carbon brush. An electric connection ring is arranged outside the carbon brush. One end of the carbon brush is electrically connected to the power connection wire.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Through the designed fixed seat, sliding seat, connecting rod, moving seat, defoaming head and guiding seat, during use, the fixed seat is installed on the stirring shaft, the sliding seat is slidably installed on the fixed seat, the sliding seat is connected to the moving seat through the connecting rod. When the stirring shaft of the fermentation tank rotates, it drives the moving seat to rotate. Cooperating with the defoaming head to absorb the bubbles at the edge, and jetting air to the middle through the connecting rod and the sliding seat, so as to blow the middle bubbles to the edge, thus facilitating the full elimination of the middle and edge bubbles.

[0020] 2. Through the designed moving seat, during use, it is guided by the engagement of the auxiliary gear and the auxiliary rack, and cooperates with the positioning frame and the sliding ball to slide and position outside the guiding seat, so that when the moving seat drives the defoaming head to move along the guiding seat, it is more stable, thus ensuring the defoaming effect.

[0021] 3. Through the designed floating seat and guiding seat, during use, the guiding frame is installed through the guiding piece. According to needs, the arc of the guiding piece is bent. And the gap between the guiding frames facilitates the guiding frame to follow the guiding piece and bend into a certain arc. Moreover, the mounting frame of the floating seat is installed on the guiding frame, which is convenient for the airbag ring to be installed on the lower side of the guiding seat through the mounting frame, thereby assisting in supporting the guiding seat for use on the liquid surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a schematic structural diagram of the sliding ring installation of the present invention;

[0024] Figure 3 is a schematic structural diagram of the defoaming head of the present invention;

[0025] Figure 4 is a schematic structural diagram of the moving seat and the guiding seat of the present invention;

[0026] Figure 5 is a schematic diagram of the position of the moving frame of the present invention;

[0027] Figure 6 is a schematic structural diagram of the guiding seat of the present invention;

[0028] Figure 7 is a schematic diagram of the power connection mechanism of the present invention;

[0029] Figure 8 Schematic diagram of the mounting structure of the present invention;

[0030] Figure 9 Schematic diagram of the connecting rod structure of the present invention;

[0031] In the figure: 1, fixed seat; 11, fixed cylinder; 12, guide groove; 2, sliding seat; 21, sliding ring; 22, sliding guide block; 23, internal channel; 24, blowing pipe; 3, connecting rod; 31, main cylinder; 32, sliding rod; 33, threaded seat; 4, moving seat; 41, mounting seat; 42, suction pump; 43, positioning frame; 44, sliding ball; 45, moving frame; 46, auxiliary gear; 47, auxiliary rack; 5, defoaming head; 51, mounting pipe; 52, suction pipe; 53, bubble-breaking needle; 54, filter screen head; 55, rotating fan; 56, bubble-breaking rotating frame; 6, guide seat; 61, guide piece; 62, guide frame; 63, connecting protrusion; 64, connecting groove; 7, floating seat; 71, mounting frame; 711, main frame body; 712, mounting head; 72, airbag ring; 73, mounting protrusion; 74, mounting card slot; 8, power connection mechanism; 81, carbon brush; 82, power connection ring; 83, power connection pipe; 84, power connection wire. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1 to 9 , the present invention provides a technical solution: a defoaming device for biological fermentation, including a fixed seat 1 installed on the stirring shaft of a biological fermentation tank, a power connection mechanism 8 is arranged at the upper end of the fixed seat 1, a sliding seat 2 is arranged outside the fixed seat 1, a connecting rod 3 is installed outside the sliding seat 2, a moving seat 4 is arranged at one end of the connecting rod 3, a defoaming head 5 is arranged on one side of the moving seat 4, a guide seat 6 is arranged below the moving seat 4, and a floating seat 7 is arranged below the guide seat 6;

[0034] The fixed seat 1 includes a fixed cylinder 11, the fixed cylinder 11 is fixed on the stirring shaft of the fermentation tank, a guide groove 12 is arranged on the surface of the fixed cylinder 11, a sliding guide block 22 is arranged on the inner wall of the sliding ring 21, and the sliding ring 21 is slidably installed on the fixed cylinder 11 through the sliding guide block 22 and the guide groove 12;

[0035] The sliding seat 2 includes a sliding ring 21. An internal channel 23 is provided inside the sliding ring 21. One end of the connecting rod 3 communicates with the inside of the internal channel 23. A blowing pipe 24 is provided on the lower side of the sliding ring 21. The upper end of the blowing pipe 24 communicates with the inside of the internal channel 23. The blowing pipes 24 are evenly installed on the lower surface of the sliding ring 21. The lower end outlet of the blowing pipe 24 is set to be inclined, and the inclination angle of the lower end of the blowing pipe 24 corresponds to the position of the guiding seat 6, which facilitates the blowing pipes 24 to blow air evenly to move the bubbles from the middle to the edge during use;

[0036] The moving seat 4 includes a mounting seat 41. An air suction pump 42 is provided inside the mounting seat 41. One end of the air suction pump 42 is connected to one end of the defoaming head 5, and the other end of the air suction pump 42 is connected to one end of the connecting rod 3. During use, the air suction pump 42 operates to pump air, so as to pump out the bubbles through the defoaming head 5 for defoaming. The air pumped out by the air suction pump 42 is led to the sliding guide block 22 and the blowing pipes 24 through the connecting rod 3 and blown to the middle position through the blowing pipes 24, so as to eliminate the bubbles in the middle or blow the bubbles to the position of the suction pipe 52 at the edge;

[0037] The defoaming head 5 includes a mounting pipe 51 mounted on the mounting seat 41, and the mounting pipe 51 is connected to one end of the air suction pump 42. One end of the mounting pipe 51 is provided with a suction pipe 52. One end of the suction pipe 52 is provided with a filter head 54. Bubble-breaking needles 53 are provided on the inner wall of the suction pipe 52. The air suction pump 42 operates to pump air, so as to pump out and eliminate the bubbles through the mounting pipe 51 and the suction pipe 52. The defoaming effect is better through the cooperation of the filter head 54 and the bubble-breaking needles 53. A rotating fan 55 is rotatably mounted inside the mounting pipe 51 through a cross-shaped frame. The rotating fan 55 is provided with a bubble-breaking rotating frame 56 through a fixed shaft, and the fixed shaft is rotatably mounted inside the mounting pipe 51 through the cross-shaped frame. During use, the airflow drives the rotating fan 55 and the bubble-breaking rotating frame 56 to rotate for further defoaming.

[0038] Further, refer to Figures 1 to 9 , the connecting rod 3 includes a main cylinder 31 and a sliding rod 32 slidably mounted at one end of the main cylinder 31. One end of the sliding rod 32 is provided with a threaded seat 33, and the threaded seat 33 is screwed into the main cylinder 31 through threads. During use, the position of the sliding rod 32 on the main cylinder 31 is adjusted by rotating the main cylinder 31, so as to facilitate the connection of both ends of the connecting rod 3 to the moving seat 4 and the sliding seat 2; The power connection mechanism 8 includes a power connection pipe 83 built-in in the stirring shaft and a power connection wire 84 installed in the power connection pipe 83. The power connection wire 84 passes through the inside of the connecting rod 3 in a spiral shape, which facilitates the stable installation of the power connection wire 84 inside the connecting rod 3 when the connecting rod 3 expands and contracts. The upper end of the power connection pipe 83 is fixedly installed with a carbon brush 81. A power connection ring 82 is provided outside the carbon brush 81. The carbon brush 81 is electrically connected to one end of the power connection wire 84. During use, the carbon brush 81 is fixed on the stirring shaft, and the power connection ring 82 is externally connected to a power supply and connected to the power connection wire 84 through the carbon brush 81.

[0039] As can be seen from the above description, the present invention has the following beneficial effects: When in use, the fixed seat 1 is installed on the stirring shaft, the sliding seat 2 is slidably installed on the fixed seat 1, the sliding seat 2 is connected to the moving seat 4 through the connecting rod 3. When the stirring shaft of the fermentation tank rotates, it drives the moving seat 4 to rotate, and cooperates with the defoaming head 5 to absorb the bubbles at the edge. The middle part is blown with air through the connecting rod 3 and the sliding seat 2, so as to blow the bubbles in the middle part to the edge, thus facilitating the full elimination of the bubbles in the middle part and at the edge.

[0040] Embodiment 2: Please refer to Figures 1 to 9 As shown, on the basis of Embodiment 1, the present invention provides a technical solution: A moving frame 45 is provided on the lower side of the mounting seat 41, an auxiliary gear 46 is provided inside the moving frame 45, and an auxiliary rack 47 is provided at the inner bottom of the guide seat 6. The auxiliary gear 46 is engaged on the auxiliary rack 47. By engaging the auxiliary gear 46 on the auxiliary rack 47, when the mounting seat 41 moves, it drives the auxiliary gear 46 to move and guide on the auxiliary rack 47; A positioning frame 43 is fixedly installed on the outer side of the mounting seat 41, a sliding ball 44 is provided at the lower end of the positioning frame 43, and the positioning frame 43 is slidably installed on the outer side of the guide seat 6 through the sliding ball 44. When in use, it is more convenient to support on the guide seat 6 through the positioning frame 43 and the sliding ball 44.

[0041] The moving seat 4 adopting the above technical solution is movably guided by engaging the auxiliary gear 46 and the auxiliary rack 47 when in use, and is positioned by sliding on the outer side of the guide seat 6 in cooperation with the positioning frame 43 and the sliding ball 44, so that the moving seat 4 drives the defoaming head 5 to move along the guide seat 6 more stably, thus ensuring the defoaming effect.

[0042] Further, it can be referred to Figures 1 to 9, the guiding seat 6 includes a guiding piece 61. The sliding ball 44 slides on the surface of the guiding piece 61. One side of the guiding piece 61 is provided with a guiding frame 62. The auxiliary rack 47 is installed inside the guiding frame 62. The shape of the guiding frame 62 is an isosceles trapezoid. Both ends of the guiding piece 61 are provided with a connecting protrusion 63 and a connecting groove 64. The connecting protrusion 63 and the connecting groove 64 are engaged with each other and fixed by screws. The position is adjusted by bending the arc of the guiding piece 61. Through the engagement of the connecting protrusion 63 and the connecting groove 64 and fixed by screws, the guiding pieces 61 are spliced into a ring and installed in the tank. And the isosceles trapezoid guiding frame 62 is convenient to be bent into multiple sizes and shapes following the guiding piece 61; the floating seat 7 includes a mounting frame 71. An airbag ring 72 is arranged on the outer side of the mounting frame 71. Mounting protrusions 73 are arranged on the surface of the mounting frame 71. Mounting slots 74 are arranged on the inner side of the airbag ring 72. The airbag ring 72 is engaged with the outer side of the mounting frame 71 through the mounting protrusions 73 and the mounting slots 74. The airbag ring 72 is installed through the mounting frame 71. Thus, it is convenient to float on the fermentation liquid surface through the airbag ring 72, so as to facilitate the defoaming head 5 to eliminate the bubbles on the liquid surface. The mounting frame 71 includes a main frame body 711 and a mounting head 712 arranged at the upper end of the main frame body 711. The mounting head 712 is fixed to the lower side of the guiding frame 62, which is convenient for quick installation and fixation during use.

[0043] For the floating seat 7 and the guiding seat 6 adopting the above technical solutions, during use, the guiding frame 62 is installed through the guiding piece 61. The arc of the guiding piece 61 is bent according to needs. And the gap between the guiding frames 62 is convenient for the guiding frame 62 to follow the guiding piece 61 and bend into a certain arc. And the mounting frame 71 of the floating seat 7 is installed on the guiding frame 62, which is convenient for the airbag ring 72 to be installed on the lower side of the guiding seat 6 through the mounting frame 71, thereby assisting in supporting the guiding seat 6 for use on the liquid surface.

[0044] Working principle and usage process of the present invention: During use, according to the size of the fermentation tank, adjust the position by bending the arc of the guiding piece 61, and fix it by the clamping of the connecting protrusion 63 and the connecting groove 64 and with screws, so that the guiding pieces 61 are spliced into a ring and installed in the tank. And the isosceles trapezoidal guiding frame 62 is convenient to bend into multiple sizes and shapes following the guiding piece 61. Install the airbag ring 72 through the mounting frame 71, so that the airbag ring 72 is convenient to float on the fermentation liquid surface, thus facilitating the defoaming head 5 to eliminate the bubbles on the liquid surface. And through the guiding groove 12 and the sliding guide block 22, it is convenient for the sliding ring 21 to move up and down. Then, the moving frame 45 and the positioning frame 43 are slidably installed on the guiding piece 61 and the guiding frame 62. Adjust the position of the sliding rod 32 on the main cylinder 31 by rotating the main cylinder 31, so as to facilitate the two ends of the connecting rod 3 to be connected to the moving seat 4 and the sliding seat 2. The brush 81 is fixed on the stirring shaft, the slip ring 82 is externally connected to the power supply and connected to the connecting wire 84 through the brush 81. During use, operate the air suction pump 42 to pump air, so as to pump out and eliminate the bubbles through the installation pipe 51 and the suction pipe 52. The defoaming effect is better with the cooperation of the filter head 54 and the defoaming needle 53. And the air flow drives the rotating fan 55 and the defoaming rotating frame 56 to rotate for further defoaming. The air pumped out by the air suction pump 42 is led to the sliding guide block 22 and the blowing pipe 24 through the connecting rod 3, and blown to the middle position through the blowing pipe 24, so as to eliminate the bubbles in the middle or blow the bubbles to the position of the edge suction pipe 52. When the stirring shaft rotates, it drives the sliding seat 2, the connecting rod 3 and the moving seat 4 to move, thus driving the defoaming head 5 to move, facilitating the uniform and rapid elimination of bubbles.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0046] The above is only used to illustrate the technical solution of the present invention and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A defoaming device for biological fermentation, characterized in that: It comprises a fixed seat installed on the stirring shaft of the biological fermentation tank, an electric connection mechanism is arranged at the upper end of the fixed seat, a sliding seat is arranged on the outer side of the fixed seat, a connecting rod is arranged on the outer side of the sliding seat, a moving seat is arranged at one end of the connecting rod, a defoaming head is arranged on one side of the moving seat, a guide seat is arranged on the lower side of the moving seat, and a floating seat is arranged on the lower side of the guide seat; The sliding seat comprises a sliding ring, an internal channel is arranged inside the sliding ring, one end of the connecting rod is communicated with the inside of the internal channel, an air blowing pipe is arranged at the lower side of the sliding ring, and the upper end of the air blowing pipe is communicated with the inside of the internal channel; The fixed seat comprises a fixed cylinder, which is fixed on the stirring shaft of the fermentation tank, a guide groove is arranged on the surface of the fixed cylinder, a sliding guide block is arranged on the inner wall of the sliding ring, and the sliding ring is slidably mounted on the fixed cylinder through the sliding guide block and the guide groove; The movable seat comprises a mounting seat, an air suction pump is arranged inside the mounting seat, one end of the air suction pump is connected to one end of the defoaming head, and the other end of the air suction pump is connected to one end of the connecting rod, a movable frame is arranged on the lower side of the mounting seat, an auxiliary gear is arranged on the inner side of the movable frame, an auxiliary rack is arranged on the inner bottom of the guide seat, and the auxiliary gear is meshed on the auxiliary rack; The defoaming head includes a mounting tube mounted on a mounting seat, and the mounting tube is connected to one end of an air suction pump, an air suction pipe is arranged at one end of the mounting tube, a filter head is arranged at one end of the air suction pipe, and a bubble breaking needle is arranged on the inner wall of the air suction pipe; The guide seat comprises a guide piece, a guide frame is arranged on one side of the guide piece, and the auxiliary rack is arranged on the inner side of the guide frame; The floating seat comprises a mounting frame, an airbag ring is arranged on the outer side of the mounting frame, a mounting protrusion is arranged on the surface of the mounting frame, a mounting slot is arranged on the inner side of the airbag ring, and the airbag ring is clamped on the outer side of the mounting frame through the mounting protrusion and the mounting slot; The power connection mechanism includes a power connection pipe installed inside the stirring shaft and a power connection wire installed in the power connection pipe. The power connection wire passes through the interior of the connecting rod in a spiral shape. A brush is fixedly installed on the upper end of the power connection pipe. A power connection ring is provided on the outer side of the brush. The brush is electrically connected to one end of the power connection wire.

2. A defoaming device for biological fermentation according to claim 1, characterized in that: The air blowing pipe is evenly installed on the lower surface of the sliding ring, the lower end outlet of the air blowing pipe is arranged in an inclined shape, and the inclination angle of the lower end of the air blowing pipe corresponds to the position of the guide seat.

3. A defoaming device for biological fermentation according to claim 1, characterized in that: A rotating fan is rotatably mounted on the inner side of the mounting tube through a cross-shaped frame, a bubble-breaking rotating frame is mounted on the rotating fan through a fixed shaft, and the fixed shaft is rotatably mounted in the mounting tube through the cross-shaped frame.

4. A defoaming device for biological fermentation according to claim 1, characterized in that: A positioning frame is fixedly installed on the outer side of the mounting seat, a sliding ball is arranged on the lower end of the positioning frame, and the positioning frame is slidably installed on the outer side of the guide seat through the sliding ball.

5. A defoaming device for biological fermentation according to claim 4, characterized in that: The sliding ball slides on the surface of the guide piece, and the shape of the guide frame is set to be an isosceles trapezoid.

6. A defoaming device for biological fermentation according to claim 1, characterized in that: Both ends of the guide piece are provided with connecting protrusions and connecting grooves, and the connecting protrusions and connecting grooves are engaged with each other and fixed by screws.

7. A defoaming device for biological fermentation according to claim 1, characterized in that: The mounting frame comprises a main frame body and a mounting head arranged at the upper end of the main frame body, and the mounting head is fixed on the lower side of the guide frame.

8. A defoaming device for biological fermentation according to claim 1, characterized in that: The connecting rod comprises a main cylinder and a sliding rod slidably mounted on one end of the main cylinder.

9. A defoaming device for biological fermentation according to claim 8, characterized in that: One end of the sliding rod is provided with a threaded seat, and the threaded seat is screwed into the main cylinder through a thread.

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