CN216171995U - Stirrer for mixing tank - Google Patents

Abstract

The utility model provides a stirrer for a mixing tank, which comprises an upper end mechanical seal and a lower end mechanical seal; the upper end mechanical seal is connected with a stirring shaft, axial-flow type fan blades are arranged at the end part of the stirring shaft, and variable frequency motors are arranged in the upper end mechanical seal and the lower end surface mechanical seal and used for driving the stirring shaft to rotate. This agitator is through combining together with mechanical seal and agitating unit, when having realized changing mechanical seal on line, need not to empty the material in the reation kettle, just can directly change mechanical seal, so just saved a large amount of labours, can change mechanical seal in reaction process.

Description

Stirrer for mixing tank

Technical Field

The utility model relates to the field of chemical equipment, in particular to a stirrer for a mixing tank.

Background

The mixing tank stirrer is mostly applied to the aseptic liquid production process field in the biopharmaceutical industry, the food industry and the like. In a general stirrer, a driving unit and a stirring head in the stirrer are connected through a ring type sealing device, but the sealing part is easy to leak, so the sealing device needs to be replaced frequently to ensure that accidents such as pollution, explosion and the like caused by leakage are avoided. The sealing device is therefore frequently replaced. When the common sealing device is maintained, the materials in the mixing tank need to be emptied, so that the maintenance cost is increased, and the workload of workers is increased.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stirrer for a mixing tank, which can realize the direct replacement of mechanical seal without emptying materials in a reaction kettle when the mechanical seal is replaced on line by combining a double-end mechanical seal and a stirring device, thereby saving a large amount of labor force and replacing the mechanical seal in the reaction process. The utility model is an important improvement of the utility model in the combination of a mechanical seal and a stirring shaft.

In order to achieve the above purpose of the present invention, the following technical solutions are adopted:

the utility model provides a stirrer for a mixing tank, which comprises an upper end mechanical seal and a lower end mechanical seal; the upper end mechanical seal is connected with a stirring shaft, axial-flow type fan blades are arranged at the end part of the stirring shaft, and variable frequency motors are arranged in the upper end mechanical seal and the lower end surface mechanical seal and used for driving the stirring shaft to rotate.

The sealing devices of the prior art are frequently replaced. When the common sealing device is maintained, the materials in the mixing tank need to be emptied, so that the maintenance cost is increased, and the workload of workers is increased.

In order to solve the technical problems, the utility model provides the stirrer for the mixing tank, the stirrer is combined with the mechanical seal and the stirring device, so that when the mechanical seal is replaced on line, the mechanical seal can be directly replaced without emptying materials in a reaction kettle, a large amount of labor force is saved, and the mechanical seal can be replaced in the reaction process.

Preferably, the variable frequency motor is connected with a driving shaft, and the driving shaft is connected with the stirring shaft through a coupler so as to connect the driving shaft and the stirring shaft to rotate together. The shaft coupling is arranged at the intersection point of the driving shaft and the stirring shaft, the driving shaft and the stirring shaft are connected by the shaft coupling to rotate together, the shaft coupling can compensate the offset between the driving shaft and the stirring shaft caused by manufacturing and installation inaccuracy, deformation or expansion in working and the like, and can also alleviate impact and absorb vibration.

Preferably, the upper end mechanical seal comprises a static ring seat and a movable ring seat, the static ring seat is fixedly mounted on the upper end mechanical seal, and the movable ring seat is sleeved on the outer wall of the driving shaft.

Preferably, the number of the fan blades is 4, and the direction of the fan blades is vertical upwards to increase the up-down circulating flow. The fan blades are vertically upward, the up-and-down circulating flow is increased, the up-and-down circulating flow of the fluid is increased, the larger circulating flow better promotes the suspension of solid particles and the liquid phase, and meanwhile, the baffle plate is added to force the fluid to generate partial radial flow so as to better ensure that the solid is fully and uniformly mixed in the liquid phase.

Preferably, the upper end is connected with a speed reducer in a mechanical sealing manner, and the speed reducer is connected with the driving shaft to achieve the purpose of speed reduction. The reduction gear sets up in the junction of drive shaft and (mixing) shaft, and the reduction gear reduces the rotational speed of drive shaft, then connects the (mixing) shaft, reaches the purpose of speed reduction.

Preferably, the lower end is connected with a detachable flange in a mechanical sealing manner, and the detachable flange is convenient to mount. The upper end is connected with a detachable flange in a mechanical sealing way, so that the stirrer can be conveniently installed.

Preferably, the lower end mechanical seal is connected with a frame, and the frame is connected with an installation bottom cover for conveniently disassembling the lower end mechanical seal.

Preferably, the rack is a support with a hollow structure for reducing weight.

Compared with the prior art, the stirrer for the mixing tank is combined with the mechanical seal and the stirring device, so that the mechanical seal can be directly replaced without emptying materials in the reaction kettle when the mechanical seal is replaced on line, a large amount of labor force is saved, and the mechanical seal can be replaced in the reaction process. The utility model discloses a flabellum direction is perpendicular up, circulation flow about the increase, circulation volume about the increase fluid, and great circulation volume makes solid particle suspension and liquid phase better, increases the baffle simultaneously and forces the fluid to produce the better messenger's solid of partial radial flow at liquid phase intensive mixing even.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of a mixer for a mixing tank according to the present embodiment.

Wherein:

10-a stirring shaft; 11-fan blades;

12-an upper end flange; 20-mechanical sealing;

21-a drive shaft; 22-a variable frequency motor;

23-a coupler; 24-a stationary ring seat;

25-moving ring seat; 26-a reducer;

27-upper end mechanical seal; 28-lower end mechanical seal;

30-detachable flange; 31-a scaffold;

32-installing the bottom cover.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 1, a schematic structural diagram of a stirrer for a mixing tank according to the present embodiment includes a stirring shaft 10, blades 11, an upper end flange 12, a mechanical seal 20, and a bottom cover 32.

The mechanical seal 20 is divided into an upper end mechanical seal 27 and an upper end mechanical seal 28, a driving shaft 21 is connected between the upper end mechanical seal 27 and the upper end mechanical seal 28, the driving shaft 21 is arranged at the central point of the upper end mechanical seal 27 and the upper end mechanical seal 28, a variable frequency motor 22 is further arranged on the driving shaft 21, and the driving shaft 21 is driven to rotate by the variable frequency motor 22. The driving shaft 21 is connected with the stirring shaft 10 through a coupling 23 and drives the stirring shaft 10 to rotate together. Because the inverter motor 22 has a fast rotation speed, which cannot reach the high rotation speed in the reaction kettle filled with the materials, and the high rotation speed also damages the motor, a speed reducer 26 is arranged in the upper mechanical seal 27 to reduce the rotation speed, so that the materials are fully stirred.

Still be provided with quiet ring seat 24 and rotating ring seat 25 in upper end mechanical seal 27 department, quiet ring seat 24 is installed on upper end mechanical seal 27, and the rotating ring seat 25 cover is established at the drive shaft 21 outer wall, and rotating ring seat 25 and quiet ring seat 24 mutually support for prevent that the material from leaking at (mixing) shaft 10 and rotation type material.

The upper end mechanical seal 27 is connected with the upper end flange 12, the stirring shaft 10 is arranged at the central point of the upper end flange 12, the top end of the stirring shaft 10 is provided with axial flow type fan blades 11, 4 fan blades 11 are arranged, and the orientation of the fan blades 11 is vertical upward to increase the up-down circulation flow. The fan blades 11 are vertically upward, the up-and-down circulating flow is increased, the up-and-down circulating flow of the fluid is increased, the larger circulating flow better promotes the suspension of solid particles and the liquid phase, and meanwhile, the baffle plate is added to force the fluid to generate partial radial flow so as to better enable the solid to be fully and uniformly mixed in the liquid phase.

The lower end of the drive shaft 21 is connected to an upper mechanical seal 28, and the upper mechanical seal 28 is connected to a removable flange 30 for facilitating the mounting of the mixer.

The supports 31 are further arranged below the detachable flange 30, the number of the supports 31 is three, and the middle of each support 31 is in a hollow design, so that materials are saved, and the detachable flange is convenient for workers to install. The lower part of the bracket 31 is connected with a mounting bottom cover 32, and the mounting bottom cover 32 is used for facilitating the rotation of workers when the stirrer is dismounted.

The utility model provides a stirrer for a mixing tank, which is combined with a mechanical seal 20 and a stirring device, so that when the mechanical seal 20 is replaced on line, the mechanical seal 20 can be directly replaced without emptying materials in a reaction kettle, a large amount of labor force is saved, and the mechanical seal 20 can be replaced in the reaction process. The utility model discloses a flabellum 11 direction is perpendicular up, circulation flow about the increase, circulation volume about the increase fluid, and great circulation volume makes solid particle suspension and liquid phase better, increases the baffle simultaneously and forces the fluid to produce the better messenger's solid of partial radial flow at liquid phase intensive mixing even.

Finally, it is to be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not intended to be limiting. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model, and these changes and modifications are to be considered as within the scope of the utility model.

Claims (8)

1. An agitator for a mixing tank, comprising an upper mechanical seal and a lower mechanical seal;

the upper end mechanical seal is connected with a stirring shaft, the end part of the stirring shaft is provided with axial-flow fan blades, and the upper end mechanical seal and the lower end mechanical seal are internally provided with variable frequency motors for driving the stirring shaft to rotate.

2. The agitator of claim 1, wherein the variable frequency motor is coupled to a drive shaft, the drive shaft coupled to the agitator shaft by a coupling for coupling the drive shaft and the agitator shaft for rotation therewith.

3. The agitator of claim 2, wherein the upper mechanical seal comprises a stationary ring seat and a moving ring seat, the stationary ring seat is fixedly mounted on the upper mechanical seal, and the moving ring seat is sleeved on the outer wall of the driving shaft.

4. The agitator of claim 1, wherein the blades are 4 blades in number, and are oriented vertically upward to increase the upward and downward circulation.

5. The mixer of claim 2 wherein said upper end is mechanically and sealingly connected to a speed reducer, said speed reducer being connected to said drive shaft for speed reduction purposes.

6. The mixer of claim 1 wherein said lower end is mechanically and sealingly connected to a removable flange for facilitating installation of said mixer.

7. The mixer of claim 1 wherein said lower mechanical seal has a frame attached thereto, said frame having a mounting bottom cover attached thereto for facilitating removal of said lower mechanical seal.

8. The blender as recited in claim 7, wherein said frame is a hollow frame to reduce weight.

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