CN212215202U - Inner stirring shaft of coaxial double-stirring system - Google Patents

Abstract

The utility model provides an inner stirring shaft of a coaxial double-stirring system, which comprises a hollow shaft arranged perpendicular to a stirring tank body, wherein the upper end of the hollow shaft is respectively connected with an inner stirring drive and an outer stirring drive, the lower end of the hollow shaft extends into the stirring tank, an inner stirring shaft is arranged in the hollow shaft, the inner stirring shaft comprises an upper half shaft with the length of 1943mm and a lower half shaft with the length of 1835m, and the upper half shaft and the lower half shaft are fixedly connected; the utility model discloses improve original length for 3994 mm's interior (mixing) shaft for the length that the cooperation was used for 1943 mm's last semi-axis and length are 1835 m's lower semi-axis, solved the problem of unipolar length overlength, reduced the installation and the operation degree of difficulty of dismantling the process.

Description

Inner stirring shaft of coaxial double-stirring system

Technical Field

The utility model relates to a coaxial two mixing system's interior (mixing) shaft belongs to axle technical field.

Background

The stirrer is a device which can fully and uniformly mix materials by stirring, is widely used in the industries of food, medicine, chemical industry, coating and the like, and is beneficial to fully mixing high-viscosity materials by adopting the stirrer with a coaxial double-stirring system.

As shown in fig. 1, a principle of a coaxial double stirring system is known as follows: the coaxial two stirring system agitator tanks are including fixing interior stirring drive and the outer stirring drive outside the jar, two drives are passed through sprocket and chain and are stretched into the hollow shaft connection in the agitator tank, the hollow shaft internal rotation is connected with an interior (mixing) shaft (a stainless steel solid axle) that length is 3994mm, the bearing chamber between hollow shaft end and interior agitator shaft is sealed through the mode of oil blanket, and the outer stirring rake of the outer fixedly connected with of hollow shaft, interior (mixing) shaft and the outer stirring rake in the outer common drive jar of interior stirring drive and outer stirring drive stir jar interior (mixing) shaft and outer stirring rake to jar interior liquid.

The existing coaxial double-stirring system has the disadvantages that: 1. the structure of oil seal sealing is very easily corroded by acid, alkali and high temperature in the using process, the sealing effect is influenced, the using range of the double stirring tanks (such as heated tomato sauce) is further limited, 2. the axial length of a single inner stirring shaft is 3994mm, the net weight exceeds 119kg, and the height of the tank body is exceeded (the height of the tank body does not include supporting legs), so that the net height of the using space of the stirring tanks cannot be lower than 9m, the mounting and dismounting work of the inner stirring shaft can be completed only by using a crane, and the operation is very difficult.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an inner stirring shaft of a coaxial double-stirring system, which solves the problems of the inner stirring shaft and the shaft seal in the prior art.

In order to achieve the above object, the present invention is achieved by the following technical solutions, including:

the utility model provides an interior (mixing) shaft of coaxial two mixing system, includes the hollow shaft that the vertical mixing jar body set up, the hollow shaft upper end is connected with interior stirring drive and outer stirring drive respectively, and in the hollow shaft lower extreme stretched into the agitator tank, be equipped with interior (mixing) shaft in the hollow shaft, interior (mixing) shaft included last semi-axis and lower semi-axis, goes up the semi-axis and passes through shaft coupling fixed connection with lower semi-axis, and the shaft coupling includes first coupling and lower coupling, and first coupling passes through bolt and lid type nut rigid connection with lower coupling and is in the same place.

By adopting the scheme, the original inner stirring shaft is improved into the upper half shaft and the lower half shaft which are matched for use, so that the problem of overlong length of the single shaft is solved, and the operation difficulty in the installation and disassembly process is reduced.

Preferably, the upper end of the upper half shaft is rotatably connected in the hollow shaft, and the tail end of the upper half shaft is fixedly connected with the upper half coupling through a locking nut.

Preferably, the upper end of the lower half shaft is welded and fixed with the lower half coupling, and the tail end of the lower half shaft is suspended in the stirring tank.

By adopting the scheme, the upper half shaft coupling, the lower half shaft coupling, the upper half shaft coupling and the lower half shaft coupling are sequentially connected together, and the disassembly is facilitated during the later maintenance of the inner stirring shaft.

Preferably, a bearing cavity is fixed between the tail end of the hollow shaft and the upper half shaft, a bearing cavity flange is fixedly connected below the bearing cavity, and the bearing cavity flange are connected through bolts and are connected with the hollow shaft into a whole.

Preferably, a mechanical seal assembly is arranged between the bearing cavity flange and the upper half shaft, and the mechanical seal assembly comprises a mechanical seal static ring and a mechanical seal dynamic ring, wherein a spring is fixed at the top end of the mechanical seal static ring and the mechanical seal dynamic ring.

Preferably, the mechanical seal static ring is fixed on the inner ring of the bearing cavity flange.

Preferably, the upper end of the upper half coupling comprises a short shaft which is integrally connected, and the mechanical seal movable ring is fixedly arranged on the top surface of the short shaft.

By adopting the scheme, the mechanical seal static ring is fixedly arranged on the inner ring of the bearing cavity flange firstly, then the mechanical seal movable ring is directly arranged at the upper end of the upper half-coupling, the upper half-coupling is pushed upwards, the upper half-coupling drives the upper half shaft and the mechanical seal movable ring at the tail end of the upper half shaft to move upwards, the mechanical seal static ring is contacted with the mechanical seal movable ring, the upper half-coupling is continuously pushed, the end face of the upper half-coupling is guaranteed to be dead against the mechanical seal movable ring and the inner ring of the bearing cavity flange, and the sealing effect is further guaranteed.

The utility model has the advantages that:

(1) adopt the technical scheme of the utility model, improve original interior (mixing) shaft for the last semi-axis and the lower semi-axis that the cooperation was used, solved the problem of unipolar length overlength, make the agitator tank can use in the workshop of height below 7m, install simultaneously and dismantle the simple lifting device that also can use in-process and replace the crane, reduced the installation and the operation degree of difficulty of dismantling the process, effectively improve work efficiency.

(2) Adopt the technical scheme of the utility model, replace the oil blanket with mechanical seal mode sealed, can guarantee sealed effect and can improve the anticorrosive high temperature resistant ability of sealing member again, can increase two mixing system's application range.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of a prior art dual agitator system;

FIG. 2 is a schematic view of a coaxial dual-stirring system stirring tank of the present invention;

FIG. 3 is a schematic view of the shaft seal part and the shaft coupling part according to the present invention;

fig. 4 is an exploded view of the shaft seal part and the shaft coupling part of the present invention.

In the figure: 1 hollow shaft, 2 inner stirring shafts, 21 inner stirring drive, 22 upper half shaft, 23 lower half shaft, 31 outer stirring drive, 32 outer stirring paddle, 41 upper half coupling, 411 locking nut, 412 short shaft, 42 lower half coupling, 421 bolt, 422 cover nut, 51 bearing cavity, 52 bearing cavity flange, 61 mechanical sealing static ring and 62 mechanical sealing dynamic ring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention easy to understand, the invention is further explained by combining the specific embodiments.

Example 1

As shown in fig. 2, the inner stirring shaft of the coaxial dual-stirring system comprises a hollow shaft 1 arranged in a vertical stirring tank body, wherein the upper end of the hollow shaft 1 is respectively connected with an inner stirring driver 21 and an outer stirring driver 31, the lower end of the hollow shaft 1 extends into the stirring tank, an inner stirring shaft is arranged in the hollow shaft 1, and an outer stirring paddle 32 is fixedly connected outside the hollow shaft 1.

The inner stirring shaft comprises an upper half shaft 22 with the length of 1943mm and a lower half shaft 23 with the length of 1835m, the upper end of the upper half shaft 22 is rotatably connected in the hollow shaft 1, the tail end of the lower half shaft 23 is suspended in the stirring tank, the tail end of the upper half shaft 22 is fixedly connected with the upper end of the lower half shaft 23 through a coupling, with reference to fig. 2 and 3, the coupling comprises an upper half coupling 41 and a lower half coupling 42 which are rigidly connected together through a bolt 421 and a cap nut 422, the upper end of the upper half coupling 41 comprises an integrally connected short shaft 412, the tail end of the upper half shaft 22 is fixedly connected with the upper half coupling 41 through a locking nut 411, and the upper end of the lower half shaft 23 is welded and fixed with.

With reference to fig. 3 and 4, a bearing cavity 51 is fixed between the end of the hollow shaft 1 and the upper half shaft 22, a bearing cavity flange 52 is fixedly connected below the bearing cavity 51, the bearing cavity 51 and the bearing cavity flange 52 are connected through a bolt and are connected with the hollow shaft 1 into a whole, a mechanical seal assembly is arranged between the bearing cavity flange 52 and the upper half shaft 22, the mechanical seal assembly comprises a mechanical seal stationary ring 61 and a mechanical seal moving ring 62, the top end of the mechanical seal stationary ring 61 is fixed on an inner ring of the bearing cavity flange 52, and the mechanical seal moving ring 62 is fixedly mounted on the top surface of the short shaft 412 at the upper end of the upper half shaft coupling 41.

The utility model discloses a theory of operation and operation flow do: the upper half shaft 22 is sleeved in the hollow shaft 1, a bearing cavity 51, a bearing in the bearing cavity 51 and a bearing cavity flange 52 below the bearing cavity 51 are fixed between the tail end of the hollow shaft 1 and the upper half shaft 22, and the bearing cavity 51 and the bearing cavity flange 52 are connected through bolts and are connected with the hollow shaft 1 into a whole; then, the mechanical seal static ring 61 is fixedly installed on the inner ring of the bearing cavity flange 52, the mechanical seal moving ring 62 is sleeved into the upper half shaft 22, the upper half shaft 22 and the upper half shaft 41 are fixedly installed, the mechanical seal moving ring 62 is fixedly installed at the upper end of the upper half shaft 41, the upper half shaft 41 is pushed upwards, the upper half shaft 41 drives the upper half shaft 22 and the mechanical seal moving ring 62 at the tail end of the upper half shaft 22 to move upwards, the mechanical seal static ring 61 is in contact with the mechanical seal moving ring 62, the upper half shaft 41 is continuously pushed, the end face of the upper half shaft 41 is guaranteed to be dead against the mechanical seal moving ring 62 and the inner ring of the bearing cavity flange 52, and finally, the upper end of the upper half shaft 22 is; and then the upper end of the lower half shaft 23 is welded and fixed with the lower half coupling 42, and the upper half coupling 41 is connected with the lower half coupling 42 to complete the installation of the inner stirring shaft and the shaft seal.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The utility model provides an interior (mixing) shaft of coaxial two mixing system, hollow shaft (1) including the setting of the vertical mixing jar body, hollow shaft (1) upper end is connected with interior stirring drive (21) and outer stirring drive (31) respectively, hollow shaft (1) lower extreme stretches into in the stirring jar, be equipped with interior (mixing) shaft in hollow shaft (1), a serial communication port, interior (mixing) shaft includes semi-axis (22) and semi-axis (23) down, it passes through shaft coupling fixed connection to go up semi-axis (22) and semi-axis (23) down, the shaft coupling includes first half-coupling (41) and lower half-coupling (42), first half-coupling (41) and lower half-coupling (42) are in the same place through bolt and lid type nut rigid connection.

2. Internal stirring shaft of coaxial double stirring system according to claim 1, characterized in that the upper end of the upper half shaft (22) is rotatably connected inside the hollow shaft (1), and the end of the upper half shaft (22) is fixedly connected with the upper half coupling (41) through a lock nut.

3. The internal stirring shaft of a coaxial double stirring system as in claim 2, wherein the upper end of the lower half shaft (23) is welded and fixed with the lower half coupling (42), and the tail end of the lower half shaft (23) is suspended in the stirring tank.

4. The internal stirring shaft of a coaxial double stirring system as in claim 3, wherein a bearing cavity (51) is fixed between the end of the hollow shaft (1) and the upper half shaft (22), a bearing cavity flange (52) is fixedly connected below the bearing cavity (51), and the bearing cavity (51) and the bearing cavity flange (52) are connected through bolts and are integrated with the hollow shaft (1).

5. An internal mixing shaft of a coaxial double mixing system according to claim 4, characterised in that a mechanical seal assembly is provided between the bearing chamber flange (52) and the upper half shaft (22), the mechanical seal assembly comprising a mechanical seal static ring (61) and a mechanical seal dynamic ring (62) with a spring fixed at the top end.

6. An internal mixing shaft of a coaxial twin mixing system as defined in claim 5, in which the mechanical seal ring (61) is fixed to the inner race of the bearing cavity flange (52).

7. Inner stirring shaft of a coaxial double stirring system according to claim 6, characterized in that the upper end of the upper half coupling (41) comprises an integrally connected stub shaft (412), and the mechanical seal moving ring (62) is fixedly installed on the top surface of the stub shaft (412).

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