A clean and sterile air blower for fermenter

Abstract

The utility model relates to a fan related technical field especially is a kind of sterile fan of fermentation tank clean, including fan shell, the both ends of fan shell are all fixedly installed and are penetrated with rotating rod, the upper end fixed mounting of fan shell has limit block, the outer ring of rotating rod is equipped with fixed ring, the upper end fixed mounting of fixed ring has first connecting rod, the outer ring of first connecting rod is equipped with push rod, in yeast propagation period, strain oxygen demand is lower, only need to maintain low wind volume to be inhaled, baffle angle is adjusted to steep state at this time, can improve local airflow velocity by reducing airflow flow cross section, avoid airflow to form stagnation vortex in air duct under low flow rate, when entering yeast metabolism vigorous period, strain oxygen demand surges, need to be inhaled high wind volume, baffle angle is adjusted to gentle state, reduce airflow flow resistance, so that fan does not need extra energy consumption to overcome wind resistance.

Description

Technical Field

[0001] This utility model relates to the field of fan-related technology, and in particular to a sterile fan for clean fermentation tanks. Background Technology

[0002] In the field of bio-fermentation, the stable operation of fermenters is highly dependent on the continuous supply of sterile clean air. This is the core prerequisite for ensuring the normal metabolism of microorganisms and improving fermentation efficiency and product quality. As a key device for delivering clean air, sterile fans must ensure that the air is deeply purified to meet sterility standards, and they must also be able to flexibly respond to the airflow adjustment needs of different fermentation stages. Therefore, sterile fans with precise adjustment capabilities and efficient purification functions have become an important support for achieving stable and controllable fermentation processes and promoting the high-quality development of the bio-manufacturing industry.

[0003] When traditional sterile fans are used for yeast fermentation, the fixed angle of the baffles makes the airflow prone to turbulence and impact, resulting in significant noise. Furthermore, they cannot match the airflow changes throughout the fermentation cycle, and the high air resistance leads to energy waste.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN219220767U that discloses a sterile air supply fan. The patent states that "after the gas passes through the air inlet of the air supply fan body, it is filtered by a filter to achieve a GMP2010A level of air hygiene; then, a 254nm wavelength ultraviolet light is generated by an ultraviolet germicidal lamp to kill bacteria, effectively sterilizing the air entering the air supply fan body. Furthermore, since one end of the first baffle is connected to one side of the air supply fan body, and the other end extends downwards towards the other side of the air supply fan body, a ventilation channel is reserved on the other side of the air supply fan body. At the lower part of the ventilation channel on the air supply fan body side, one end of the second baffle is connected, and the other end of the second baffle extends downwards towards..." Extending towards the side where the first baffle connects to the blower body, and reserving an air outlet channel with the blower body on that side, the ventilation channel is smaller than the air outlet channel, allowing the air entering the UV sterilization area to stay for a longer time, so that the 254nm wavelength ultraviolet light generated by the UV sterilization lamp can kill bacteria for a longer time, thereby effectively killing the colonies generated by the blower itself, preventing the colonies generated by the blower itself from flowing to the aseptic filling machine, thus reducing the risk of bacterial proliferation in the aseptic filling machine. The double baffle has a fixed angle structure, and the size of the ventilation channel and the air outlet channel is constant, which cannot adapt to the air volume change requirements of the entire yeast fermentation cycle. When the yeast proliferation period requires low air volume, the fixed small ventilation channel will increase the airflow resistance, causing the blower to consume additional energy to overcome the resistance.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a clean, sterile fan for fermentation tanks, in order to solve the problems mentioned in the background art, such as the fixed baffle angle of traditional sterile fans used for yeast fermentation, which easily cause turbulent airflow and significant noise, and the inability to match the air volume changes throughout the fermentation cycle, resulting in high wind resistance and energy waste.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sterile blower for a fermenter, comprising a blower housing, with rotating rods fixedly installed through both ends of the blower housing, a limiting block fixedly installed at the upper end of the blower housing, a fixing ring sleeved around the outer ring of the rotating rod, a first connecting rod fixedly installed at the upper end of the fixing ring, a push rod sleeved around the outer ring of the first connecting rod, a second connecting rod fixedly connected through both ends of the push rod, a first fixing block sleeved around the outer ring of the second connecting rod, a first baffle fixedly installed at the front end of the first fixing block, a second fixing block fixedly installed at the rear end of the first baffle, a slider fixedly installed at the lower end of the second fixing block, a third connecting rod fixedly installed through both ends of the second fixing block, a second limiting block sleeved around the outer ring of the third connecting rod, a guide rail fixedly installed at the upper end of the blower housing, and a second baffle provided at the upper end of the first baffle.

[0008] Preferably, both ends of the limiting block are fixedly connected with rotating rods, the rotating rods and the limiting block form a rotating structure, and the push rod and the second connecting rod form a rotating structure.

[0009] Preferably, the third connecting rod and the second limiting block form a rotating structure, and the guide rail is set to an arc shape.

[0010] Preferably, a first handle is fixedly installed at the front end of the rotating rod, and a second handle is fixedly installed at the front end of another set of rotating rods.

[0011] Preferably, a first filter is fixedly installed at the upper end of the fan housing, and a second filter is provided at the lower end of the first filter.

[0012] Preferably, mounting plates are fixedly installed through both ends of the fan housing, and a blower is fixedly installed at the lower end of the mounting plates.

[0013] Preferably, a fixing plate is fixedly installed through both ends of the fan housing, an ultraviolet germicidal lamp is fixedly installed at the lower end of the fixing plate, and an air outlet is provided at the lower end of the fan housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. To address the noise issue, when the rotating rod is manually rotated, its torque is transmitted to the fixed ring through an interference fit, causing the fixed ring to rotate synchronously around the axis of the rotating rod. This, in turn, drives the first connecting rod to push the push rod in an arc motion. The push rod and the second connecting rod work together to evenly transmit power to the first fixed block, ultimately driving the first or second baffle to rotate. At the same time, the slider at the lower end of the second fixed block is embedded in the arc-shaped guide rail. The slider slides smoothly along the arc-shaped trajectory of the guide rail as the baffle rotates, providing precise motion guidance for the baffle. This allows the baffle angle to be flexibly adapted to the airflow requirements of different stages of yeast fermentation, reducing the impact and collision between the airflow and the baffle, and lowering turbulence noise and mechanical friction noise.

[0016] 2. Regarding energy consumption, during the yeast proliferation period, the yeast strain has a low oxygen requirement and only requires a low airflow. At this time, adjusting the baffle angle to a steeper state can increase the local airflow velocity by reducing the airflow cross-section, thus avoiding the formation of stagnant vortices in the air duct at low flow rates. When the yeast enters the vigorous metabolic period, the oxygen requirement of the cells surges, and a high airflow is required. At this time, adjusting the baffle angle to a gentler state can reduce airflow resistance, so that the fan does not need to consume additional energy to overcome the wind resistance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fan housing and the second filter of this utility model in cooperation with each other;

[0019] Figure 3 This is a schematic diagram of the cooperative structure of the rotating rod and the fixed ring of this utility model;

[0020] Figure 4 This is a schematic diagram of the interaction between the slider and the guide rail of this utility model.

[0021] In the diagram: 1. Fan housing; 2. Rotating rod; 3. Limiting block; 4. Fixing ring; 5. First connecting rod; 6. Push rod; 7. Second connecting rod; 8. First fixing block; 9. First baffle; 10. Second fixing block; 11. Slider; 12. Third connecting rod; 13. Second limiting block; 14. Guide rail; 15. Second baffle; 16. First handle; 17. Second handle; 18. First filter; 19. Second filter; 20. Mounting plate; 21. Blower; 22. Fixing plate; 23. Ultraviolet germicidal lamp; 24. Air outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a sterile fan for a fermenter, including a fan housing 1, with rotating rods 2 fixedly installed through both ends of the fan housing 1, a limiting block 3 fixedly installed at the upper end of the fan housing 1, a fixing ring 4 sleeved on the outer ring of the rotating rod 2, a first connecting rod 5 fixedly installed at the upper end of the fixing ring 4, a push rod 6 sleeved on the outer ring of the first connecting rod 5, a second connecting rod 7 fixedly connected through both ends of the push rod 6, a first fixing block 8 sleeved on the outer ring of the second connecting rod 7, a first baffle 9 fixedly installed at the front end of the first fixing block 8, a second fixing block 10 fixedly installed at the rear end of the first baffle 9, a slider 11 fixedly installed at the lower end of the second fixing block 10, a third connecting rod 12 fixedly installed through both ends of the second fixing block 10, a second limiting block 13 sleeved on the outer ring of the third connecting rod 12, a guide rail 14 fixedly installed at the upper end of the fan housing 1, and a second baffle 15 provided at the upper end of the first baffle 9.

[0024] Furthermore, both ends of the limiting block 3 are fixedly connected with rotating rods 2. The rotating rods 2 and the limiting block 3 form a rotating structure, and the push rod 6 and the second connecting rod 7 form a rotating structure. Through the setting of the limiting block 3, the rotating rod 2 can be precisely axially limited and radially supported to prevent it from deviating or moving during rotation, thus ensuring transmission stability.

[0025] Furthermore, the third connecting rod 12 and the second limiting block 13 form a rotating structure, and the guide rail 14 is set in an arc shape. Through the setting of the guide rail 14, the arc trajectory provides precise guidance for the slider 11, restricts the movement path of the baffle, avoids deviation or jamming during adjustment, and ensures smooth transmission.

[0026] Furthermore, a first handle 16 is fixedly installed at the front end of the rotating rod 2, and a second handle 17 is fixedly installed at the front end of another set of rotating rods 2. Through the setting of the second handle 17, the operating torque can be accurately transmitted, and the independent angle adjustment of the second baffle can be realized in conjunction with the transmission component to meet the differentiated needs of the airflow channel at different stages of fermentation.

[0027] Furthermore, a first filter 18 is fixedly installed on the upper end of the fan housing 1, and a second filter 19 is provided at the lower end of the first filter 18. Through the setting of the first filter 18, the air entering the fan can be pre-filtered, effectively intercepting large particulate impurities such as dust and hair in the air, realizing air pretreatment, reducing the burden on the second filter 19, and preventing large particulate impurities from clogging the precision filter material, thus providing a clean foundation for subsequent deep filtration and sterilization.

[0028] Furthermore, mounting plates 20 are fixedly installed through both ends of the blower casing 1, and a blower 21 is fixedly installed at the lower end of the mounting plate 20. The blower 21 is a 9-19 type centrifugal blower, which can provide continuous power for air circulation, drive the external air through the filtration and sterilization process in sequence, and ensure that the airflow is stably delivered to the fermenter to meet the oxygen demand of microbial metabolism.

[0029] Furthermore, a fixing plate 22 is fixedly installed through both ends of the blower housing 1. An ultraviolet germicidal lamp 23 is fixedly installed at the lower end of the fixing plate 22. An air outlet 24 is provided at the lower end of the blower housing 1. The ultraviolet germicidal lamp 23, model ZW36D19W-Z218, covers the entire cross-section of the airflow through its irradiation range. It forms a synergistic filtration and sterilization mechanism with the filtration system, preventing colonies that grow on the inner wall of the air duct or in the dead corners of the equipment from entering the fermenter with the airflow, thus providing a sterile environment for microbial metabolism.

[0030] Working principle: External air first enters the blower housing 1 under the action of blower 21. The airflow first flows through the first filter 18 fixed at the upper end of the blower housing 1, intercepting large particulate impurities such as dust and hair in the air. Then it flows downward through the second filter 19 at the lower end of the first filter 18 for fine filtration. Subsequently, the qualified air continues to flow downward, passing through the ultraviolet germicidal lamps 23 fixed at both ends of the blower housing 1 by fixing plates 22. The ultraviolet germicidal lamps 23 stably release ultraviolet rays to kill bacteria in the airflow. At the same time, one end of the second baffle 15 is tilted downward, leaving a ventilation channel between it and one side of the blower housing 1. One end of the first baffle 9 is tilted downward, leaving an air channel between it and the blower housing 1 on that side. According to the air volume requirements of different stages of yeast fermentation, the first handle 16 or the second handle at the front end of the rotating rod 2 can be manually rotated. 17. The rotating rod 2 rotates stably under the limiting support of the limiting block 3 fixed at the upper end of the blower housing 1, driving the fixed ring 4 of the outer ring to rotate synchronously. The first connecting rod 5 fixed at the upper end of the fixed ring 4 pushes the push rod 6 to make arc motion. The push rod 6 transmits power to the first fixed block 8 of the outer ring through the second connecting rod 7 fixed at both ends, thereby driving the baffle fixed at the front end of the first fixed block 8 to rotate. At the same time, the slider 11 at the lower end of the second fixed block 10 fixed at the rear end of the baffle slides smoothly along the arc guide rail 14. The third connecting rod 12 fixed at both ends of the second fixed block 10 is assisted in stabilization under the limiting of the second limiting block 13 of the outer ring, ensuring that the angle adjustment of the first baffle 9 and the second baffle 15 is accurate and without deviation. Finally, the sterile air with the appropriate air volume is delivered from the air outlet 24 at the lower end of the blower housing 1 to the fermenter to meet the metabolic needs of microorganisms.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sterile fan for cleaning fermenters, comprising a fan housing (1), characterized in that: Rotating rods (2) are fixedly installed through both ends of the fan housing (1). A limit block (3) is fixedly installed at the upper end of the fan housing (1). A fixing ring (4) is fitted around the outer ring of the rotating rod (2). A first connecting rod (5) is fixedly installed at the upper end of the fixing ring (4). A push rod (6) is fitted around the outer ring of the first connecting rod (5). A second connecting rod (7) is fixedly connected through both ends of the push rod (6). A first fixing block (8) is fitted around the outer ring of the second connecting rod (7). (8) has a first baffle (9) fixedly installed at the front end, a second fixing block (10) fixedly installed at the rear end of the first baffle (9), a slider (11) fixedly installed at the lower end of the second fixing block (10), a third connecting rod (12) fixedly installed through both ends of the second fixing block (10), a second limiting block (13) sleeved on the outer ring of the third connecting rod (12), a guide rail (14) fixedly installed at the upper end of the fan housing (1), and a second baffle (15) provided at the upper end of the first baffle (9).

2. The sterile fan for a fermenter according to claim 1, characterized in that: Both ends of the limiting block (3) are fixedly connected with rotating rods (2), the rotating rods (2) and the limiting block (3) form a rotating structure, and the push rod (6) and the second connecting rod (7) form a rotating structure.

3. The sterile fan for a fermenter according to claim 1, characterized in that: The third connecting rod (12) and the second limiting block (13) form a rotating structure, and the guide rail (14) is set in an arc shape.

4. The sterile fan for a fermenter according to claim 1, characterized in that: The front end of the rotating rod (2) is fixedly equipped with a first handle (16), and the front end of another set of the rotating rods (2) is fixedly equipped with a second handle (17).

5. The sterile fan for a fermenter according to claim 1, characterized in that: A first filter (18) is fixedly installed at the upper end of the fan housing (1), and a second filter (19) is provided at the lower end of the first filter (18).

6. The sterile fan for a fermenter according to claim 1, characterized in that: Both ends of the fan housing (1) are fixedly mounted with mounting plates (20), and a blower (21) is fixedly mounted on the lower end of the mounting plates (20).

7. The sterile fan for a fermenter according to claim 1, characterized in that: Both ends of the fan housing (1) are fixedly installed with fixing plates (22), and ultraviolet germicidal lamps (23) are fixedly installed at the lower end of the fixing plates (22). An air outlet (24) is provided at the lower end of the fan housing (1).

Images