A submersible agitator and fermenter

Abstract

This utility model discloses an immersion mixer and fermentation tank, comprising: a motor module including a motor and a motor output shaft; a gear module including a gearbox, in which a first planetary gear set and a second planetary gear set are installed, one end of the motor output shaft extending into the gearbox and being drivenly connected to the first planetary gear set, and the second planetary gear set being drivenly connected to a gear output shaft with one end extending from the gearbox; and a stirring assembly including a blade mounting seat on which multiple stirring blades are mounted. The power output of the motor module is transmitted to the stirring assembly through the two sets of planetary gears, achieving complex transmission within a compact space, realizing a high transmission ratio, maintaining stability under highly complex and high-speed operating conditions, and extending the service life of the equipment. The motor module is sealed and installed in the motor box, and the gear module is sealed and installed in the gearbox, which can prevent the motor module and gear module from being corroded by the stirred material, thus improving the sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of material mixing equipment technology, and in particular to an immersion mixer and a fermentation tank. Background Technology

[0002] Agitators are used in many processes of industrial production, such as material mixing and fermentation. Agitators are devices that use mechanical force to force convection and uniform mixing of liquids, gases, or solid-liquid mixtures. Their basic mixing functions mainly include: ① Accelerated dissolution: By stirring, solids and liquids come into rapid contact, significantly shortening the dissolution time; ② Uniform mixing: Eliminating material stratification and achieving homogenization of components (such as raw material mixing in chemical reactions); ③ Suspending solids: Preventing particle sedimentation and maintaining a suspended state (such as sludge suspension in wastewater treatment).

[0003] Fermentation tanks are a common type of chemical equipment. When a fermentation tank is working, the materials inside need to be stirred. Taking a biogas fermentation tank as an example, the fermentation tank contains a solid-liquid mixture. During the fermentation process, the mixture needs to be continuously stirred to promote the renewal of the gas-liquid / liquid-liquid interface through turbulence (such as the dissolved oxygen operation in the fermentation process). In order to obtain a better stirring effect, the agitator is immersed in the material during operation, which places high demands on the sealing performance of the agitator. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a submersible agitator with a compact structure and good sealing performance.

[0005] To solve the above-mentioned technical problems, one technical solution of this utility model is: an immersion stirrer, comprising:

[0006] A motor module, comprising a motor housing, wherein a motor stator and a motor rotor are installed inside the motor housing, and the motor rotor is drivenly connected to a motor output shaft extending from the motor housing at one end;

[0007] A gear module, comprising a gearbox, wherein a first planetary gear set and a second planetary gear set are installed in the gearbox and are connected in transmission; one end of the motor output shaft extends into the gearbox and is connected in transmission to the first planetary gear set; and the second planetary gear set is connected in transmission to a gear output shaft with one end extending out of the gearbox.

[0008] A stirring assembly, the stirring assembly including a blade mounting base connected to the gear output shaft, wherein a plurality of stirring blades are mounted on the blade mounting base.

[0009] As a preferred technical solution, one end of the gear output shaft extends from the gearbox and is fitted with a connecting seat. The connecting seat is provided with a keyway that mates with the blade mounting seat. The end of the gear output shaft is fitted with a locking screw cap that axially limits the connecting seat.

[0010] As a preferred technical solution, the blade mounting seat includes a sleeve fitted onto the end of the gear output shaft, the sleeve being provided with a locking key that mates with the keyway; a pressure cap is installed at the end of the sleeve away from the gear output shaft, the pressure cap being connected to the locking screw cap by bolts; the stirring blade is mounted on the sleeve.

[0011] As a preferred technical solution, each of the stirring blades forms a connection trajectory on the blade mounting base, and the connection trajectory extends spirally from the side closer to the gearbox to the side farther away from the gearbox.

[0012] As a preferred technical solution, along the axial direction of the blade mounting base, the helical endpoint of all the connection trajectories is located outside the helical starting point of any of the connection trajectories.

[0013] As a preferred technical solution, a rotating bearing and a shaft seal are installed between the motor output shaft and the motor housing.

[0014] As a preferred technical solution, a rotating bearing and a shaft seal are installed between the gear output shaft and the gearbox.

[0015] As a preferred technical solution, the motor output shaft, the gear output shaft, and the blade mounting base are coaxially arranged.

[0016] As a preferred technical solution, a bracket is installed on the outer wall of the gearbox.

[0017] Due to the adoption of the above technical solution, an immersion agitator includes: a motor module, the motor module including a motor housing, the motor housing housing a motor stator and a motor rotor, the motor rotor being drivenly connected to a motor output shaft with one end extending from the motor housing; a gear module, the gear module including a gearbox, the gearbox housing a first planetary gear set and a second planetary gear set being drivenly connected, one end of the motor output shaft extending into the gearbox and being drivenly connected to the first planetary gear set, the second planetary gear set being drivenly connected to a gear output shaft with one end extending from the gearbox; and an agitation assembly, the agitation assembly including a gear output shaft with one end extending from the gearbox. The gear output shaft is connected to a blade mounting base, on which multiple stirring blades are mounted. The power output of the motor module is transmitted to the stirring assembly through two sets of planetary gears, achieving complex transmission within a compact space. The planetary gears can achieve a high transmission ratio while maintaining high efficiency. Their distributed load design allows multiple planetary gears to share the force simultaneously, reducing the stress on individual gears. This ensures stability even under highly complex and high-speed operating conditions, extending the equipment's service life. The motor module is sealed and installed inside the motor housing, and the gear module is sealed and installed inside the gear housing, preventing the motor module and gear module from being corroded by the stirred materials and improving the sealing performance.

[0018] To solve the above-mentioned technical problems, another technical solution of this utility model is: a fermenter, including a tank body, a support installed inside the tank body, and an immersion stirrer as described above installed on the support. Attached Figure Description

[0019] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0022] In the diagram: 11-Motor housing; 12-Motor stator; 13-Motor rotor; 14-Motor output shaft; 21-Gearbox; 22-First planetary gear set; 23-Second planetary gear set; 24-Gear output shaft; 3-Agitator blade; 41-Connecting seat; 42-Locking nut; 43-Sleeve; 44-Locking key; 45-Pressure cap; 46-Bolt; 5-Bracket base; 6-Bracket. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0024] like Figure 1 and Figure 2 As shown, an immersion mixer includes:

[0025] The motor module includes a motor housing 11, in which a motor stator 12 and a motor rotor 13 are installed. The motor rotor 13 is drivenly connected to a motor output shaft 14, one end of which extends out of the motor housing 11.

[0026] The gear module includes a gearbox 21, in which a first planetary gear set 22 and a second planetary gear set 23 are installed and driven together. One end of the motor output shaft 14 extends into the gearbox 21 and is driven together with the first planetary gear set 22. The second planetary gear set 23 is driven together with a gear output shaft 24 that extends out of the gearbox 21.

[0027] The stirring assembly includes a blade mounting base connected to the gear output shaft 24, and a plurality of stirring blades 3 are mounted on the blade mounting base.

[0028] The power output of the motor module is transmitted to the stirring assembly through two sets of planetary gears, achieving complex transmission within a compact space. The planetary gears can achieve a high transmission ratio while maintaining high efficiency. Their distributed load design allows multiple planetary gears to share the force simultaneously, reducing the stress on individual gears. This ensures stability even under highly complex and high-speed operating conditions, extending the service life of the equipment. The motor module is sealed and installed in the motor housing 11, and the gear module is sealed and installed in the gear housing 21, which can prevent the motor module and gear module from being corroded by the stirring material, thus improving the sealing performance.

[0029] The motor housing 11 is fixedly connected to the gearbox 21, and sealing rings are installed at the joint between the motor housing 11 and the gearbox 21 to prevent external materials from entering the interior through the joint between the two, thereby protecting the internal components of the motor housing 11 and the gearbox 21 and extending the service life of the equipment.

[0030] In one specific embodiment, a rotating bearing and a shaft seal are installed between the motor output shaft 14 and the motor housing 11. The motor output shaft 14 rotates relative to the motor housing 11. Installing the rotating bearing reduces friction between the two, extending the service life of the components. Simultaneously, the seal, in conjunction with the design of the seal, seals the components inside the motor housing 11, preventing external materials from entering and damaging the components.

[0031] In a specific example of this utility model, a rotary bearing and a shaft seal are installed between the gear output shaft 24 and the gearbox 21. The gear output shaft 24 rotates relative to the gearbox 21. Installing the rotary bearing reduces friction between the two and extends the service life of the components. At the same time, the seal design can seal the components inside the gearbox 21, preventing external materials from entering the motor housing 11 and damaging the components inside the motor housing 11.

[0032] In a specific example of this utility model, the motor output shaft 14, the gear output shaft 24, and the blade mounting base are coaxially arranged. All power output and transmission are on the same axis. This design has many advantages, such as reduced energy loss, torque balance and reduced vibration loss, compact axial layout, extended mechanical life, and reduced maintenance costs.

[0033] In one specific embodiment, one end of the gear output shaft 24 extends from the gearbox 21 and is fitted with a connecting seat 41. The connecting seat 41 is provided with a keyway that mates with the blade mounting seat. A locking nut 42 is installed at the end of the gear output shaft 24 to axially limit the connecting seat 41. The locking nut 42 axially positions the connecting seat 41 on the gear output shaft 24, preventing axial displacement of the connecting seat 41 during operation. The stirring assembly is mounted on the connecting seat 41, and the power output of the gear output shaft 24 is transmitted to the stirring assembly through the connecting seat 41.

[0034] In one specific embodiment, the blade mounting seat includes a sleeve 43 fitted onto the end of the gear output shaft 24. The sleeve 43 is provided with a locking key 44 that mates with the keyway. A pressure cap 45 is installed at the end of the sleeve 43 away from the gear output shaft 24, and the pressure cap 45 is connected to the locking screw cap 42 by bolts 46. The stirring blade 3 is mounted on the sleeve 43. The locking key 44, mates with the keyway, can limit the blade mounting seat axially. The pressure cap 45 and the locking screw cap 42 are fixedly connected together by bolts 46, and the edge of the pressure cap 45 presses against the sleeve 43, further limiting the blade mounting seat axially and ensuring that the blade mounting seat will not shift axially during stirring, thus ensuring the normal operation of the equipment.

[0035] In a specific example of this utility model, each of the stirring blades 3 forms a connecting trajectory on the blade mounting base, and the connecting trajectory extends spirally from the side closer to the gearbox 21 to the side farther away from the gearbox 21. That is, the stirring blades 3 are designed in a spiral shape, and the length of the spiral trajectory of the stirring blades 3 can be set as needed. The lengths of the spiral trajectories are not equal when there are three stirring blades 3 and when there are four stirring blades 3; the former is longer than the latter. The spirally arranged blade combination forms a pusher propeller, which provides a better stirring effect on the material.

[0036] In one specific implementation, along the axial direction of the blade mounting base, the helical endpoints of all the connecting trajectories are located outside the helical starting point of any of the connecting trajectories. That is, the guiding direction of the stirring blades 3 is outward, resulting in good material stirring effect.

[0037] In a specific example of this utility model, a bracket 5 is installed on the outer wall of the gearbox 21. The agitator can be easily fixed and installed via the bracket 5.

[0038] A fermenter includes a tank body, on which a support 6 is installed. A submersible agitator, as described above, is mounted on the support 6. A support base 5 for the submersible agitator is connected to the support 6 inside the tank body. Depending on the size of the fermenter, one or more sets of submersible agitators can be installed inside the tank body.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An immersion stirrer, characterized in that include: A motor module, comprising a motor housing, wherein a motor stator and a motor rotor are installed inside the motor housing, and the motor rotor is drivenly connected to a motor output shaft extending from the motor housing at one end; A gear module, comprising a gearbox, wherein a first planetary gear set and a second planetary gear set are installed in the gearbox and are connected in transmission; one end of the motor output shaft extends into the gearbox and is connected in transmission to the first planetary gear set; and the second planetary gear set is connected in transmission to a gear output shaft with one end extending out of the gearbox. A stirring assembly, the stirring assembly including a blade mounting base connected to the gear output shaft, wherein a plurality of stirring blades are mounted on the blade mounting base.

2. The submersible agitator of claim 1, wherein: One end of the gear output shaft extends from the gearbox and is fitted with a connecting seat. The connecting seat is provided with a keyway that mates with the blade mounting seat. The end of the gear output shaft is fitted with a locking screw cap that axially limits the connecting seat.

3. The submersible agitator of claim 2, wherein: The blade mounting base includes a sleeve fitted onto the end of the gear output shaft, the sleeve having a locking key that mates with the keyway; a pressure cap is installed at the end of the sleeve away from the gear output shaft, the pressure cap being connected to the locking screw cap by bolts; the stirring blade is mounted on the sleeve.

4. The submersible agitator of claim 1, wherein: Each of the stirring blades forms a connection trajectory on the blade mounting base, the connection trajectory extending spirally from the side closer to the gearbox to the side farther away from the gearbox.

5. The submersible agitator of claim 4, wherein: Along the axial direction of the blade mount, the helical endpoint of all the said connection trajectories is located outside the helical starting point of any of the said connection trajectories.

6. The submersible agitator of claim 1, wherein: A rotating bearing and a shaft seal are installed between the motor output shaft and the motor housing.

7. The submersible agitator of claim 1, wherein: A rotary bearing and a shaft seal are installed between the gear output shaft and the gearbox.

8. The submersible agitator of claim 1, wherein: The motor output shaft, the gear output shaft, and the blade mounting base are coaxially arranged.

9. The submersible agitator of any one of claims 1 to 8, wherein: A bracket is installed on the outer wall of the gearbox.

10. A fermenter characterised in that: It includes a tank, a support is installed inside the tank, and an immersion agitator according to any one of claims 1-9 is installed on the support.

Images