CN204220075U - A kind of frame type stirring device - Google Patents

Abstract

The utility model belongs to the technical field of chemical equipment, and relates to a frame-type stirring device in a chemical reaction kettle, and is especially suitable for heat transfer and reaction processes containing medium-high viscosity polymer particles such as polymerization reaction. It includes a stirring shaft arranged in the main body of the reactor, and the stirring shaft is connected with a geared motor. It is characterized in that a stirring frame is set on the stirring shaft, and two layers of horizontal stirring blades and multiple sets of vertical stirring blades are arranged in the stirring frame. The stirring blades are respectively provided with shearing blades, which can effectively destroy the coalescence between the polymer particles, thereby avoiding the formation of large aggregates of the polymer material particles. The utility model can reduce the adhesion of material particles to the stirring blades while obtaining the best shearing force, save power consumption, and have good economic and social benefits.

Description

A frame type stirring device

technical field

The utility model belongs to the technical field of chemical equipment, relates to a stirring device in a chemical reaction kettle, and is especially suitable for heat transfer and reaction processes containing medium and high viscosity polymer particles such as polymerization reaction.

Background technique

Stirring is widely used in chemical production. According to the physical and chemical properties of the medium, the size of the container and the purpose of stirring, there are various types of agitators used, mainly paddle type, propulsion type, frame type and turbine type.

Frame stirrers and ribbon stirrers are commonly used in polymerization reactions. Although the traditional frame agitator is relatively strong and stirs a large amount of material, due to the limitation of the traditional frame structure, the agitation is dominated by horizontal circular flow. When dealing with high viscosity, there is often a stirring dead zone, and the material is wrapped around the shaft. Central, causing polymer cohesion and affecting product quality; the fluid flow rate of the ribbon agitator is the slowest near the wall of the kettle. Although the stirring blade has the function of scraping the wall, due to the large volume of the reactor, it is easy to form The polymer is bonded. At the same time, the contact area between the ribbon and the high-viscosity material is large. When stirring, the required torque is large, especially at the moment of starting. The load is strong, and even the motor is prone to overcurrent and damage to the motor reducer system.

Contents of the invention

The purpose of this utility model is to provide a new type of frame-type stirring device, which can prevent the agglomeration of high-viscosity polymer particles and the adhesion of polymer particles to the inner wall of the reactor, so that the stirring is even and there is no dead zone. It can reduce the motor load and achieve satisfactory mixing results.

The utility model is solved by the following technical solutions: a frame-type stirring device, including a stirring shaft arranged in the main body of the reaction kettle, the stirring shaft is connected with a deceleration motor, and it is characterized in that a stirring frame is arranged on the stirring shaft, and a stirring frame is arranged in the stirring frame. The upper and lower layers of horizontal stirring blades and multiple sets of vertical stirring blades are respectively equipped with shearing blades, which can effectively destroy the coalescence of polymer particles, thereby avoiding the formation of large particles of polymer materials. of agglomeration.

The shearing edge of the stirring blade points to the rotation direction of the stirring blade.

The cutting edge angle of the shearing edge is 32°.

The shape of the stirring frame matches the main body of the reaction kettle used.

The utility model can reduce the adhesion of material particles to the stirring blades while obtaining the best shearing force, save power consumption, and have good economic and social benefits.

Description of drawings

Fig. 1 is the front view of the installation structure of the embodiment of the utility model.

Fig. 2 is the schematic diagram of stirring frame in the embodiment.

FIG. 3 is a top view of FIG. 2 .

Figure 4 and Figure 5 are schematic diagrams of the lower horizontal blades in the embodiment.

Fig. 6 and Fig. 7 are the schematic diagrams of the upper horizontal blade in the embodiment.

In the figure, 1-reduction motor, 2-stirring shaft, 3-coupling, 4-stirring frame, 5-outer vertical paddle, 6-lower horizontal paddle, 7-inner vertical paddle, 8-upper horizontal paddle leaf.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Embodiment: The structure of the stirring device in this embodiment is shown in accompanying drawings 1 and 2, mainly including a geared motor 1, a stirring shaft 2, a coupling 3, and a stirring frame 4.

The stirring shaft 2 is connected to the reduction motor 1 through a shaft coupling 3, and a stirring frame 4 is arranged on the stirring shaft 2, and the stirring frame 4 is composed of an outer vertical paddle 5, an inner vertical paddle 7, a lower horizontal paddle 6 and an upper horizontal paddle. The paddle 8 is composed of horizontal paddle and vertical paddle welded, and the whole stirring frame 4 is connected with the stirring shaft 2 through the hub at the center of the horizontal paddle. The horizontal paddle and the vertical paddle are respectively provided with a shearing edge, the shearing edge points to the rotation direction of the stirring paddle, and the cutting edge angle of the shearing edge is 32°. The shape of lower horizontal paddle 6 is shown in accompanying drawing 4, accompanying drawing 5, and the shape of upper horizontal paddle 8 is shown in accompanying drawing 6, accompanying drawing 7.

In the embodiment, the shape of the stirring frame 4 is matched with the main body of the reactor used.

Claims (4)

1. a frame type stirring device, comprise the shaft be arranged in reactor main body, shaft is connected with reducing motor, it is characterized in that on shaft, establish stirring frame, in stirring frame, establish upper and lower two-layer horizontal stirrer paddle and many group vertical stirring blades, described stirrer paddle is respectively equipped with shear blade.

2. frame type stirring device as claimed in claim 1, is characterized in that the shear blade of described stirrer paddle points to the direction of rotation of stirrer paddle.

3. frame type stirring device as claimed in claim 1 or 2, is characterized in that the blade angle of described shear blade is 32 °.

4. frame type stirring device as claimed in claim 1, is characterized in that the shape of described stirring frame matches with used reactor main body.