CN104437332B - A stirring reation kettle for cutting fluid - Google Patents

Abstract

The invention relates to chemical mechanical equipment, in particular to a stirring reaction kettle for cutting fluid. The stirring reaction kettle for the cutting fluid comprises a kettle body, a feeding pipe, a stirring paddle arranged in the kettle body, a drainage cylinder and a stirring blade, wherein an upper cylinder opening of the drainage cylinder is connected to the inner wall of the kettle body below an upper cover; the bottom of the drainage cylinder is provided with a drainage hole, the stirring paddle comprises a spiral fan blade and a connecting shaft fixedly connected with an output shaft of the motor, the spiral fan blade is fixed on the connecting shaft, and the wall of the drainage cylinder, which is positioned above the spiral fan blade in height, is provided with the drainage hole. The invention overcomes the defect of uneven mixing in the prior art, and provides a stirring reaction kettle which promotes reactants to be uniformly mixed through the flow of liquid in the height direction.

Description

Stirred Reactors for Cutting Fluids

technical field

The invention relates to chemical machinery equipment, in particular to a stirring reaction kettle for cutting fluid.

Background technique

There are generally two types of reaction equipment used in the production of cutting fluids, stirred reactors and tubular reactors, among which stirred reactors are the most widely used. Among them, the stirred reactor is characterized by large phase contact area, high mass transfer and heat transfer efficiency, low temperature, high operational flexibility (interval operation, semi-batch operation, continuous operation), and easy control and change of reaction conditions.

Stirring in a stirred reactor plays a critical role. Stirring action: mix two or more miscible liquids evenly; form emulsion or suspension. The difference in the type of agitator has a great influence on the stirring effect. One of the cores of reactor scale-up is the scale-up of the stirrer.

However, most of the existing stirrers are stirred on a stratosphere, such as the heating and stirring reactor disclosed in Chinese patent CN203648523, comprising a tank, a heater and a stirrer, the tank wall of the tank is provided with a hollow interlayer, and the stirrer The mixing blade is included, the stirring blade is horizontally located in the tank, the inner layer of the tank wall is provided with a protrusion inwardly, the heater is arranged in the interlayer of the tank wall at the protrusion, and the stirring blade and the protrusion are located on the same plane.

The agitator set in the Chinese patent CN203648523 mainly acts on individual horizontal surfaces, and the stirring effect is mainly concentrated on the liquid mixing in the stratosphere. The agitator has a weak ability to stir the liquid in the height direction of the entire reactor, which is not conducive to the uniform mixing of reactants .

Contents of the invention

The technical problem to be solved by the present invention is to provide a stirred reactor in which reactants are uniformly mixed through the flow of liquid in the height direction.

In order to solve the above technical problems, the present invention provides the following technical solutions:

A stirring reaction kettle for cutting fluid, including a kettle body, a feed pipe, a stirring paddle arranged in the kettle body, the stirring paddle is connected with the output shaft of the motor, and a drainage tube, the upper cylinder port of the drainage tube is connected to the upper On the inner wall of the kettle below the cover, the stirring paddle is arranged in the drainage tube; the bottom of the drainage tube is provided with a drainage hole, and the stirring paddle includes a spiral fan blade and a connecting shaft fixedly connected with the output shaft of the motor. The spiral fan blades are fixed on the connecting shaft, and drainage holes are arranged on the wall of the drainage tube whose height position is above the spiral fan blades.

Adopting the stirring reaction kettle for cutting fluid of the present invention has the following effects:

1. There is a drainage hole on the wall of the drainage tube above the spiral fan blade, so that the liquid entering the drainage tube from the feed pipe will first fall into the bottom of the kettle body through the drainage hole at the bottom of the spiral fan blade and the drainage tube. When the position rises to the wall of the drainage tube above the spiral fan blade, the rotation of the spiral fan blade has the effect of "drainage" downward, making the liquid flow downward under the action of the spiral fan blade, and at the same time it is located above the spiral fan blade The liquid at the wall of the drainage tube will flow into the drainage tube from the drainage hole to supplement the liquid level in the drainage tube, and then a part of the bottom liquid will rise up, thus forming a water circulation centered on the drainage tube. There is not only advective flow but also up and down surge.

2. The agitated reaction kettle for cutting fluid of the present invention is provided with drainage holes at the bottom of the drainage tube and on the spiral fan blades, but no drainage holes are provided at the drainage tube at the same height as the spiral fan, the purpose is to avoid The spiral fan transfers the stirring power to the horizontal flow of the moving water.

3. The stirred reactor for cutting fluid of the present invention promotes uniform mixing of the reactants through the surge of the liquid in the height direction, and at the same time there is advection flow, which is more uniform than the mixed solution of the prior art.

Further, the feed pipe penetrates into the kettle body from the side wall of the kettle body; the mouth of the feed pipe enters the drainage tube; the kettle body is provided with a docking interface for auxiliary materials, and the docking interface is passed through the guide tube into the drainage tube.

Use the diversion tube and feeding tube to add the main material and the auxiliary material respectively, and at the same time, both of them are passed into the drainage tube first, so as to avoid the auxiliary material added during the heating process, which will completely react with the local main material before stirring and breaking up.

Further, it also includes a drainage tube arranged in the drainage tube, the connecting shaft is arranged in the drainage tube, and an auger blade is arranged on the connecting shaft, the upper and lower openings of the drainage tube are fixed, and the upper opening is fixed on the kettle. On the inner body wall, the guide tube penetrates into the drainage tube, and the nozzle of the guide tube is above the blade of the auger.

Through the drainage tube, the introduction of auxiliary materials and the introduction of main materials are relatively independent. Even in the guide tube, the two basically do not touch. Both concentrated in advance).

Further, a small drainage hole is provided on the side wall of the drainage tube at a height position above the mouth of the feeding tube.

After the liquid level rises, the mixed liquid falling into the bottom of the kettle body can return to the drainage pipe through the small drainage hole, and the inner space of the drainage pipe does not constitute an obstacle to the water circulation. The height position of the small drainage hole is above the mouth of the feed tube, also to avoid the main material that is initially introduced into the drainage tube with initial velocity directly into the drainage tube.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the embodiments of the stirred reactor for cutting fluid in the present invention.

Fig. 2 is a partial structural schematic diagram of Embodiment 2 of the embodiment of the stirred reactor for cutting fluid in the present invention.

Detailed ways

The present invention will be described in further detail below by means of specific embodiments:

The reference signs in the drawings of the description include: kettle body 10, valve 11, feed pipe 20, drainage tube 31, drainage hole 33, drainage tube 40, small drainage hole 41, docking interface 50, drainage tube 51, upper cover 60, motor 61, connecting shaft 62, stirring paddle 63, auger blade 64.

Embodiment one

As shown in Fig. 1, the stirring reactor for cutting fluid of the present invention includes a reactor body 10, an upper cover 60 arranged on the reactor body 10 and a motor 61 arranged on the upper cover 60, the motor 61 its output shaft passes through the loam cake 60 and intervenes in the still body 10.

The stirring reaction kettle for cutting fluid of the present invention includes a stirring paddle 63 arranged in the kettle body 10, the stirring paddle 63 is connected to the output shaft of the motor 61, and a drainage tube 31, and the upper cylinder port of the drainage tube 31 is connected to On the inner wall of the kettle body 10 below the upper cover 60 , a stirring paddle 63 is arranged in the drainage tube 31 .

Under the premise of meeting the strength and rigidity requirements, the drainage tube 31 is made of light materials as much as possible to achieve the purpose of reducing the weight. In this embodiment, thick aluminum plates are rolled and welded.

The stirring paddle 63 is arranged in the drainage tube 31, and the bottom of the drainage tube 31 is provided with a drainage hole 33. The stirring paddle 63 includes a screw blade and a connecting shaft 62 fixedly connected to the output shaft of the motor 61. The spiral fan blade is fixed on the connecting shaft 62, and the wall of the drainage tube 31 whose height position is above the spiral fan blade is provided with a drainage hole 33.

The size of the drainage hole 33 should be designed according to the section diameter of the drainage tube 31. If the section of the drainage tube 31 is a circle with a diameter of 12 cm, then the drainage hole 33 should be set as a circular hole with a diameter of 1 to 2 cm.

The feeding pipe 20 of the stirring reaction kettle used for cutting fluid of the present invention penetrates into the kettle body 10 from the side wall of the kettle body 10, and a feeding port is also provided on the wall of the drainage tube 31 above the stirring paddle 63. The mouth of the feed pipe 20 is connected to the feed port. The kettle body 10 is provided with an auxiliary material docking interface 50 , and the docking interface 50 leads into the drainage tube 31 through a draft tube 51 .

The lower part of the kettle body 10 is provided with a valve 11 for leading the finished product out of the kettle body 10 .

Embodiment two

As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that this embodiment also includes a drainage tube 40 disposed in the drainage tube 31, the connecting shaft 62 is disposed in the drainage tube 40, and the connecting shaft 62 The shaft 62 is provided with an auger blade 64, and the drainage tube 40 is open up and down, wherein the upper opening is fixed on the inner wall of the kettle body 10, and the drainage tube 51 penetrates into the drainage tube 40, and the drainage tube 51 The mouth of the tube is above the auger blade 64, and the side wall of the drain pipe 40 above the mouth of the feed pipe 20 at the height position is provided with a small drainage hole 41, where the small drainage hole 41 is the diameter of the drainage tube 40. Between one-twelfth and one-tenth of that.

As shown in Figures 1 and 2, there is no drainage hole 33 on the side wall of the drainage tube 31 facing the nozzle of the feed pipe, so as to prevent the raw material with initial velocity from flowing directly from the drainage hole 33 on the side wall to the drainage tube 31 outside.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that those skilled in the art can make some modifications and improvements without departing from the structure of the present invention, such as coating the surface of the drainage tube 31 and the drainage tube 40 in the two embodiments with a heat-resistant coating. These should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicability of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (2)

1. A stirring reaction kettle for cutting fluid comprises a kettle body (10), a feeding pipe (20) and a stirring paddle (63) arranged in the kettle body (10), wherein the stirring paddle (63) is connected with an output shaft of a motor (61) and comprises a drainage cylinder (31), an upper cylinder opening of the drainage cylinder (31) is connected to the inner wall of the kettle body (10) below an upper cover (60), and the stirring paddle (63) is arranged in the drainage cylinder (31); the bottom of the drainage cylinder (31) is provided with a drainage hole (33), the stirring paddle (63) comprises a spiral fan blade and a connecting shaft (62) fixedly connected with an output shaft of the motor (61), the spiral fan blade is fixed on the connecting shaft (62), and the wall of the drainage cylinder (31) at the height position above the spiral fan blade is provided with the drainage hole (33); the feeding pipe (20) penetrates into the kettle body (10) from the side wall of the kettle body (10); the opening of the feeding pipe (20) enters the drainage cylinder (31); the kettle body (10) is provided with a butt joint interface (50) of auxiliary materials, and the butt joint interface (50) is introduced into the drainage cylinder (31) through a drainage tube (51);

the kettle is characterized by further comprising a drainage tube (40) arranged in the drainage tube (31), the connecting shaft (62) is arranged in the drainage tube (40), auger blades (64) are arranged on the connecting shaft (62), the drainage tube (40) is vertically and uniformly opened, the upper opening of the drainage tube is fixedly formed in the inner wall of the kettle body (10), the drainage tube (51) penetrates into the drainage tube (40), and the opening of the drainage tube (51) is positioned above the auger blades (64); the drainage cylinder is formed by welding thick aluminum plates in a rolling mode.

2. The stirring reaction tank for a cutting fluid as set forth in claim 1, wherein: and a small drainage hole (41) is formed in the side wall of the drainage tube (40) which is positioned above the opening of the feeding tube (20) in the height position, the cross section of the drainage tube is in a circular shape with the diameter of 12cm, and the diameter of the drainage hole is in a circular hole with the diameter of 1-2cm.

Images