Stirring device with crushing function and fermentation tank

Abstract

The utility model relates to the field of fermentation, and discloses a stirring device with a crushing function and a fermentation tank, the stirring device comprises a variable frequency motor, a speed reducer, a stirring mechanism, a switching mechanism and a crushing mechanism; the variable frequency motor is installed on the speed reducer through a motor support, the speed reducer is a planetary speed reducer, an output shaft of the variable frequency motor is arranged in a center gear of the speed reducer, the stirring mechanism is connected with an output mechanism of the speed reducer, and the smashing mechanism is rotationally arranged in the middle of the stirring mechanism and located below the center gear; the switching mechanism comprises a shaft sleeve arranged on the output shaft in a sliding mode, a control assembly controlling the shaft sleeve to ascend and descend and a connector arranged on the smashing mechanism, transmission teeth meshed with the center gear are arranged on the outer wall, close to the bottom, of the shaft sleeve, and a connector connected with the connector is arranged on the lower surface of the shaft sleeve. According to the utility model, the problem that fungi with longer hyphae cannot be discharged after being subjected to liquid fermentation in a traditional fermentation tank is solved.

Description

Technical Field

[0001] The utility model relates to the field of fermentation, in particular to a stirring device with a crushing function and a fermentation tank. Background Art

[0002] Submerged liquid fermentation is a fermentation method that has developed rapidly in recent years. Its liquid strains have the characteristics of high purity, strong vitality, and fast reproduction. When inoculated into the culture material, they have good fluidity, many germination points, rapid mycelium growth, and a short production cycle. Therefore, the industrial production of liquid strains can achieve automation, standardization, and normalization, and the quality of its products can be well controlled.

[0003] Submerged fermentation requires the use of a fermentation tank to hold the culture solution. For fungi with relatively long hyphae such as Rhizopus, after cultivation in the fermentation tank, they form large intertwined cotton-like masses. The existing fermentation tanks are only equipped with a stirring device, and the traditional stirring device only has a single stirring function and cannot achieve low-speed stirring followed by high-speed crushing. Therefore, using the existing fermentation tank for cultivation will result in difficulty for the cotton-like fungi after cultivation to be discharged from the discharge port along with the culture solution into the next process of dispersing the bacterial liquid. Therefore, the existing long-hypha fungi generally do not undergo submerged fermentation, and thus the advantages of submerged fermentation in industrial production have not been exploited.

[0004] Based on this, the present application provides a stirring device with a crushing function and a fermentation tank to solve the problem that long-hypha fungi form large intertwined cotton-like masses after cultivation in the fermentation tank and are difficult to be discharged from the discharge port along with the culture solution into the process of dispersing the bacterial liquid, so as to fully exploit the advantages of submerged fermentation in industrial production. Summary of the Utility Model

[0005] The utility model aims to solve the technical problems existing in the prior art. For this purpose, the utility model provides a stirring device with a crushing function and a fermentation tank to solve the problem that long-hypha fungi form large intertwined cotton-like masses after cultivation in the fermentation tank and are difficult to be discharged from the discharge port along with the culture solution into the process of dispersing the bacterial liquid, so as to fully exploit the advantages of submerged fermentation in industrial production.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] In a first aspect, a stirring device with a crushing function is provided, which includes a variable-frequency motor, a speed reducer, a stirring mechanism, a switching mechanism, and a crushing mechanism, wherein: the variable-frequency motor is mounted on the speed reducer through a motor bracket, the speed reducer adopts a planetary speed reducer, the output shaft of the variable-frequency motor is arranged inside the central gear of the speed reducer, the stirring mechanism is connected to the output mechanism of the speed reducer, and the crushing mechanism is rotatably arranged in the middle of the stirring mechanism and below the central gear; the switching mechanism includes a sleeve slidably arranged on the output shaft, a control component for controlling the lifting of the sleeve, and a coupler arranged on the crushing mechanism. The outer wall of the sleeve near the bottom is provided with transmission teeth meshing with the central gear, and the lower surface of the sleeve is provided with a connection head connected to the coupler. The switching mechanism is used to realize the switching of the stirring device between the low-speed stirring mode and the high-speed crushing mode.

[0008] In some alternative embodiments, a metal key is arranged on the output shaft, and a key groove is arranged in the inner hole of the sleeve. The sleeve is slidably arranged on the output shaft.

[0009] In some alternative embodiments, the control component includes an annular roller, a fork bracket, and a linear actuator. The annular roller is rotatably mounted on the top of the sleeve. One end of the fork bracket is fixedly connected to the annular roller, and the other end is connected to the linear actuator. The linear actuator is arranged on the speed reducer.

[0010] In some alternative embodiments, the stirring mechanism includes multiple stirring shafts and a support disk arranged on the stirring shafts. A through hole is arranged in the middle of the support disk, and the top of the crushing mechanism is rotatably mounted on the support disk through a bearing.

[0011] In some alternative embodiments, a circular limiting groove is arranged on the upper surface of the support disk. The bearing adopts a tapered roller bearing. The outer ring of the bearing is interference-fitted with the circular limiting groove, and the inner ring of the bearing is fixedly connected to the crushing mechanism.

[0012] In some alternative embodiments, the stirring mechanism further includes a stirring wheel, which is composed of an annular plate and multiple stirring blades evenly distributed on the outer periphery of the annular plate. The annular plate is fixedly connected to the stirring shaft.

[0013] In some alternative embodiments, the crushing mechanism includes a crushing shaft and crushing blades arranged at the bottom of the crushing shaft. The bottom of the crushing shaft extends out of the stirring mechanism.

[0014] In some alternative embodiments, the connection head is set as multiple first insertion teeth arranged in an annular array, and multiple second insertion teeth inserted with the first insertion teeth are arranged on the upper surface of the coupler.

[0015] In some alternative embodiments, chamfers for guiding are arranged on both sides of the first insertion teeth and the second insertion teeth, and on both sides of the top of the transmission teeth.

[0016] In a second aspect, a fermenter is provided, which is equipped with the above-mentioned stirring device with a crushing function. The fermenter can be used for the production of submerged liquid fermentation of filamentous fungi, solving the problem that the filamentous fungi are in a large mass of intertwined cotton-like form after being cultured in the fermenter and are difficult to be discharged from the discharge port along with the culture solution and enter the process of dispersing the bacterial liquid.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The stirring device designed by the present utility model can utilize the switching mechanism to realize the switching between the low-speed stirring mode and the high-speed crushing mode, enabling the fermenter to first slowly stir the culture solution in the fermenter by the stirring mechanism to meet the requirements of liquid fermentation, and then cut and disperse the filamentous fungi in the cotton-like form after fermentation by the crushing mechanism, so as to realize efficient liquid fermentation by using the fermenter and solve the problem that the traditional fermenter cannot discharge materials during liquid fermentation;

[0019] 2. Integrate the submerged liquid fermentation operation and the operation of dispersing the bacterial liquid into one device, reduce processes, equipment and labor, shorten the processing time and improve efficiency, reduce the risk of contamination of the bacterial liquid during the transfer process among various processes, and ensure the quality of the bacterial liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0021] Figure 1 is a schematic structural diagram of the stirring device with a crushing function provided by the present utility model;

[0022] Figure 2 is Figure 1 a cross-sectional view provided;

[0023] Figure 3 is Figure 2 a partially enlarged view provided;

[0024] Figure 4 is an assembly structure diagram of the switching mechanism, the speed reducer and the crushing mechanism provided by the present utility model;

[0025] Figure 5 is an installation structure diagram of the crushing mechanism on the speed reducer in a preferred embodiment;

[0026] Figure 6 is an installation structure diagram of the crushing mechanism on the speed reducer in another preferred embodiment;

[0027] Figure 7 It is a cross-sectional view of the fermenter provided by the present utility model.

[0028] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - Variable-frequency motor, 2 - Reducer, 2.1 - Central gear, 3 - Stirring mechanism, 3.1 - Stirring shaft, 3.2 - Support plate, 3.3 - Stirring wheel, 3.3.1 - Annular plate, 3.3.2 - Stirring blade, 4 - Switching mechanism, 4.1 - Bush, 4.1.1 - Driving tooth, 4.1.2 - Connector (first inserted tooth), 4.2 - Control component, 4.2.1 - Annular roller, 4.2.2 - Fork support, 4.2.3 - Linear actuator, 4.3 - Coupler, 4.3.1 - Second inserted tooth, 5 - Crushing mechanism, 5.1 - Crushing shaft, 5.2 - Crushing blade, 6 - Motor bracket, 7 - Bearing, 10 - Fermenter. Detailed implementation manners

[0030] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model;

[0033] In addition, the descriptions of terms such as "first" and "second" in the present utility model are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0035] Embodiment 1

[0036] This embodiment provides a stirring device with a crushing function, as shown in the attached Figure 1 and attached Figure 2 figures, which includes a variable-frequency motor 1, a speed reducer 2, a stirring mechanism 3, a switching mechanism 4, and a crushing mechanism 5, where:

[0037] The speed reducer 2 adopts a planetary speed reducer. The central gear 2.1 of this planetary speed reducer is a central gear with internal teeth. The planetary speed reducer is a direct application of the prior art, and its specific structure will not be elaborated here. The variable-frequency motor 1 is mounted on the speed reducer 2 through a motor bracket 6, and its output shaft is arranged inside the central gear 2.1 of the speed reducer 2. The stirring mechanism 3 is connected to the output mechanism (not shown in the figure) of the speed reducer 2; specifically: as shown in the attached Figure 5 figure, when the outer ring (with internal teeth) of the speed reducer is in a fixed state, while the planetary gear rotates on its own axis and revolves around the central gear, at this time the stirring mechanism is arranged on the planet carrier of the planetary gear; as shown in the attached Figure 6 figure, when the planetary gear only rotates on its own axis and does not revolve around the central gear, at this time the outer ring (with internal teeth) of the speed reducer is in a rotating state, and at this time the stirring mechanism is arranged on the outer ring of the speed reducer. Generally speaking, the stirring mechanism is driven by the speed reducer. The crushing mechanism 5 is rotatably arranged in the middle of the stirring mechanism 3 and is located below the central gear 2.1.

[0038] As shown in the attached Figure 2 to attached Figure 4As shown, the preferred assembly structure of the crushing mechanism and the stirring structure in this embodiment is as follows: The stirring mechanism 3 includes multiple stirring shafts 3.1 and a support disk 3.2 provided on the stirring shafts for installing the crushing mechanism. A through hole for installing the crushing mechanism is provided in the middle of the support disk 3.2. The crushing mechanism 5 includes a crushing shaft 5.1 and crushing blades 5.2 provided at the bottom of the crushing shaft. The top of the crushing shaft 5.1 is rotatably installed on the support disk 3.2 through a bearing 7, and its bottom extends out of the stirring mechanism to prevent the crushing blades from interfering with the stirring mechanism.

[0039] In a preferred embodiment, as shown in the appendix Figure 3 As shown, a circular limit groove is provided on the upper surface of the support disk 3.2. The bearing 7 is a tapered roller bearing. The outer ring of the bearing is press-fitted with the circular limit groove, and the inner ring of the bearing is press-fitted with the crushing shaft of the crushing mechanism.

[0040] As shown in the appendix Figure 3 and the appendix Figure 4 As shown, the switching mechanism 4 includes a bushing 4.1 slidably provided on the output shaft, a control component 4.2 for controlling the lifting of the bushing, and a coupler 4.3 provided on the crushing mechanism. A transmission tooth 4.1.1 meshing with the central gear 2.1 is provided on the outer wall of the bushing 4.1 near the bottom, and a connection head 4.1.2 connected to the coupler 4.3 is provided on the lower surface of the bushing 4.1. Working principle: When the control component controls the bushing to rise, the transmission tooth of the bushing meshes with the central gear. At this time, the reducer is driven by a frequency conversion motor, and then the stirring mechanism is driven to rotate to achieve the stirring function. When the control component controls the bushing to descend, the connection head of the bushing is connected to the coupler. At this time, the transmission tooth of the bushing is disengaged from the central gear, and the frequency conversion motor directly drives the crushing mechanism to rotate to achieve the crushing function. In this way, the switching mechanism is used to control the switching of the stirring device between the low-speed stirring and high-speed crushing modes. The bushing can also be in a state of being disengaged from both the central gear and the coupler.

[0041] In a preferred embodiment, the sliding connection method of the bushing on the output shaft is as follows: A metal key (not shown in the figure) is provided on the output shaft. On the one hand, the metal key transmits the torque of the frequency conversion motor, and on the other hand, it plays a guiding role when the bushing moves. A keyway is provided in the inner hole of the bushing 4.1, and the bushing 4.1 is slidably provided on the output shaft.

[0042] In a preferred embodiment, as shown in the appendix Figure 4 As shown, the connection head 4.1.2 is provided with multiple first insertion teeth arranged in a circular array. Multiple second insertion teeth 4.3.1 engaged with the first insertion teeth are provided on the upper surface of the coupler 4.3. When the control component controls the bushing to move downward, the first insertion teeth are engaged with the second insertion teeth to realize the transmission of the bushing to the crushing shaft.

[0043] In a preferred embodiment, chamfers for guiding are provided on both sides of the first and second pinion teeth and on both sides of the top of the transmission tooth. This design enables the bushing to automatically engage the central gear and the coupler when rising and falling.

[0044] In a preferred embodiment, as shown in the appended Figure 3 and the appended Figure 4 figures, the control assembly 4.2 includes an annular roller 4.2.1, a fork 4.2.2, and a linear actuator 4.2.3. The annular roller 4.2.1 is rotatably mounted on the top of the bushing 4.1. One end of the fork 4.2.2 is fixedly connected to the annular roller 4.2.1, and the other end is connected to the linear actuator 4.2.3. The linear actuator 4.2.3 is disposed on the speed reducer. The linear actuator can be selected from components such as a pneumatic push rod or an electric push rod. Since the linear actuator is disposed on the speed reducer, the motor bracket is designed as a semi-enclosing structure to avoid interference with the fork of the linear actuator.

[0045] In a preferred embodiment, as shown in the appended Figure 1 figures, the stirring mechanism 3 further includes a stirring wheel 3.3. The stirring wheel 3.3 is composed of an annular plate 3.3.1 and a plurality of stirring blades 3.3.2 evenly distributed on the outer periphery of the annular plate. The annular plate 3.3.1 is fixedly connected to the stirring shaft 3.1. This design makes the bottom of the stirring mechanism highly stable and the stirring effect better.

[0046] Application Example 1

[0047] As shown in the appended Figure 5 figures, a fermenter 10 is provided, which is equipped with the stirring device having a crushing function described in the first embodiment. The fermenter can be used for the production of submerged fermentation of filamentous fungi.

[0048] In actual application, the speed range that the variable-frequency motor can select is 1000 - 9000 rpm. During the liquid fermentation stage, the linear actuator is controlled to rise, the bushing is lifted, so that the transmission tooth meshes with the central gear of the planetary speed reducer. The variable-frequency motor is adjusted to low power and low speed, and the speed is further reduced to 30 - 60 rpm through the planetary speed reducer (reduction ratio from 30:1 to 0:1) to drive the stirring mechanism to slowly stir the culture solution in the fermenter to meet the requirements of liquid fermentation. When chopping and dispersing the mycelium after fermentation is completed, the control actuator is lowered, the bushing is pressed down, so that the first pinion tooth meshes with the second pinion tooth of the crushing mechanism. The variable-frequency motor is adjusted to high power and high speed to drive the crushing mechanism to rotate at high speed to cut and disperse the bacterial liquid. When shifting gears, it is required that the variable-frequency motor and each rotating mechanism are in a stationary state; when stopping, the linear actuator is in the middle position, and the bushing does not contact the stirring mechanism and the crushing structure.

[0049] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A stirring device with a crushing function, comprising a variable frequency motor, a reducer and a stirring mechanism, wherein the variable frequency motor is mounted on the reducer through a motor bracket; characterized in that: It also includes a switching mechanism and a crushing mechanism, wherein: The reducer is a planetary reducer, the output shaft of the variable frequency motor is arranged in the central gear of the reducer, the stirring mechanism is connected to the output mechanism of the reducer, and the crushing mechanism is rotatably arranged in the middle of the stirring mechanism and below the central gear; The switching mechanism includes a sleeve slidably arranged on the output shaft, a control component for controlling the lifting and lowering of the sleeve, and a connector arranged on the crushing mechanism. The outer wall of the sleeve near the bottom is provided with transmission teeth meshing with the central gear, and the lower surface of the sleeve is provided with a connecting head connected to the connector. The switching mechanism is used to realize the switching of the stirring device between low-speed stirring and high-speed crushing modes.

2. The stirring device with crushing function according to claim 1, characterized in that: The output shaft is provided with a metal key, the inner hole of the shaft sleeve is provided with a keyway, and the shaft sleeve is slidably arranged on the output shaft.

3. The stirring device with crushing function according to claim 1, characterized in that: The control component includes an annular roller, a fork frame and a linear actuator. The annular roller is rotatably mounted on the top of the sleeve. One end of the fork frame is fixedly connected to the annular roller, and the other end is connected to the linear actuator. The linear actuator is arranged on the reducer.

4. The stirring device with crushing function according to claim 1, characterized in that: The stirring mechanism comprises a plurality of stirring shafts and a supporting disk arranged on the stirring shafts, a through hole is arranged in the middle of the supporting disk, and the top of the crushing mechanism is rotatably mounted on the supporting disk through a bearing.

5. The stirring device with crushing function according to claim 4, characterized in that: A circular limiting groove is arranged on the upper surface of the support plate, and the bearing adopts a tapered roller bearing. The outer ring of the bearing is interference fitted with the circular limiting groove, and the inner ring of the bearing is fixedly connected with the crushing mechanism.

6. The stirring device with crushing function according to claim 4, characterized in that: The stirring mechanism also includes a stirring wheel, which is composed of an annular plate and a plurality of stirring blades uniformly distributed on the outer circumference of the annular plate, and the annular plate is fixedly connected to the stirring shaft.

7. The stirring device with crushing function according to claim 1, characterized in that: The pulverizing mechanism comprises a pulverizing shaft and a pulverizing blade arranged at the bottom of the pulverizing shaft, and a stirring mechanism extends from the bottom of the pulverizing shaft.

8. The stirring device with crushing function according to claim 1, characterized in that: The connector is provided with a plurality of first insert teeth in an annular array, and the upper surface of the connector is provided with a plurality of second insert teeth which are inserted into the first insert teeth.

9. The stirring device with crushing function according to claim 8, characterized in that: Both sides of the first inserting tooth and the second inserting tooth as well as both sides of the top of the transmission tooth are provided with chamfers for guiding.

10. A fermentation tank, characterized in that: The fermentation tank is equipped with a stirring device with a crushing function as claimed in any one of claims 1 to 9, and can be used for the production of liquid deep fermentation of long hyphae fungi.

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