CN103933918A - Reaction kettle - Google Patents

Abstract

The invention relates to a reaction kettle, wherein a support is fixed above a round hole in the center of a tank cover, a sealing spherical bearing is arranged in the support, a ball body of the sealing spherical bearing is connected with a stirring shaft, a sealing film is fixed between the round hole and the ball body, a sealing cavity is formed between the sealing film and the support, water is injected into the sealing cavity, the reaction kettle also comprises a gas heating device and an air inlet pipe inserted from the bottom, the end part of the air inlet pipe inserted into the tank body is connected with a spiral aeration pipe arranged in the tank body, and the spiral aeration pipe is positioned below an electric heating. Because the water is annotated in the seal chamber of seal membrane top, consequently when jar internal pressure changes, the seal chamber can play good supporting role to the seal membrane, and the seal membrane can not bulge or collapse, also can not receive extra tension, consequently is difficult for the damage, and life is longer. The characteristic that the gas of intake pipe input moves up fast helps producing the convection current with the material, makes the more even transmission of electric heating pipe's heat for the material faster.

Description

a reaction kettle

technical field

The invention relates to a reaction kettle. the

Background technique

At present, most of the reaction kettles used for the preparation of printing and dyeing auxiliaries on the market are not equipped with stirring devices, which makes the reaction materials not stirred sufficiently and unevenly, which directly leads to slow reaction speed and incomplete reaction, which wastes resources and improves production. cost, and some reaction medium remaining in the tank after the reaction is easy to corrode, which affects the reaction equipment and cannot improve economic benefits.

In order to solve the above problems, Chinese utility model patent CN 203123964 U discloses a reaction device for preparing printing and dyeing auxiliaries, which is equipped with a stirring shaft extending into the tank body on the tank cover, and an anchor is installed at the bottom end of the stirring shaft Shaped paddles realize the stirring of materials and speed up the reaction.

However, some printing and dyeing auxiliaries have harmful substances volatilized during the preparation process, so they need to be stirred in a closed environment. Most of the traditional stirred reactors use packing seals or mechanical seals. The packing seals have poor sealing performance, large resistance, and are easy to wear; while mechanical seals are expensive, and the sealing performance decreases after a period of use, and the maintenance and replacement costs are high.

In addition, sometimes the reaction requires a certain heating environment. Traditionally, the heating of the material can only be achieved by heating the tank body. The heating speed is slow and the temperature of the material in the tank is not uniform, which is not conducive to the smooth progress of the reaction.

Contents of the invention

The purpose of the present invention is to: overcome the defective of above-mentioned prior art, propose a kind of reactor.

In order to achieve the above object, the reaction kettle proposed by the present invention comprises a tank body, a tank cover, a stirring motor, a stirring shaft, and a stirring paddle. The tank body is provided with a feeding port and a discharge port, and is characterized in that: A round hole is set in the center, and a bracket is fixed above the round hole. A sealed spherical bearing is arranged in the bracket. The ball of the sealed spherical bearing is connected to the stirring shaft, and the bearing box of the sealed spherical bearing is fixed with the bracket. A flexible sealing film is fixed between them, and a sealed cavity is formed between the flexible sealing film and the bracket, and the sealed cavity is filled with pure water; an electric heating tube is installed at the bottom of the tank body, and the inner wall of the tank body above the electric heating tube A nozzle for spraying in an obliquely downward direction is fixed, a suction port is fixed at the bottom of the tank below the electric heating tube, and a pipeline connecting the suction port and the nozzle is arranged outside the tank body, and a water pump is installed on the pipeline; the reaction kettle It also includes a gas heating device and an inlet pipe inserted into the tank body from the bottom, the inlet pipe is connected with the outlet end of the gas heating device, the inlet end of the gas heating device is connected to an inert gas source through a pipeline, and inserted into the tank body The end of the inlet pipe is connected to the spiral aeration pipe installed in the tank body, the spiral aeration pipe is located under the electric heating pipe, the tank cover is equipped with an exhaust pipe, and the exhaust pipe is equipped with a pressure relief valve .

Reactor of the present invention, further improvement is:

1. An observation port is installed on the tank cover.

2. A thermometer inserted into the tank body is installed on the tank cover.

3. The flexible sealing film is ring-shaped, and the inner and outer sides are respectively sealed and connected to the sphere and the round hole of the tank cover through flanges.

4. The interface between the can lid and the can body is clamped and joined.

5. The injection direction of the nozzle is opposite to the rotation direction of the stirring shaft.

The reaction kettle of the present invention uses ball bearings to realize the all-round agitation of the stirring paddle without leaving any dead angle; the flexible sealing film is used for sealing, so that the gas in the internal tank does not leak, effectively protects the operator and does not pollute the environment; The sealing chamber is filled with water, so when the pressure in the tank changes, especially when the pressure increases greatly or the pressure drops sharply, the sealing chamber can play a good role in supporting the sealing film, because when the external pressure changes, the liquid There is almost no change in volume with water, so the sealing film will not bulge or collapse, and will not be subjected to additional tension, so it is not easy to break and has a longer service life.

Therefore, the sealing structure used in the present invention has low cost, can withstand different pressure changes in the tank, and has stronger adaptability.

There is an electric heating tube in the tank body, which can heat the material, and the water circulation injection method is used to improve the uniformity of heating, and can quickly transfer the heat to the material in the tank body to achieve the purpose of heating the material. Compared with the traditional non-heating Or the equipment for heating the tank body, the reaction kettle of the present invention can heat the materials more uniformly, improve the reaction speed and stability of the materials, and further improve the production efficiency.

In addition, the bottom of the tank body of the reaction kettle of the present invention is connected with an air intake pipe, and the heated inert gas is delivered to the inside of the tank body through the air intake pipe, and the hot gas is dispersed through the spiral aeration tube, so that the heat can be quickly transferred to the The material in the tank body achieves the purpose of heating the material; in addition, due to the rapid upward movement of the gas input from the intake pipe, it helps to convect the material, so that the heat of the electric heating tube can be transferred to the material faster and more uniformly. The two aspects act at the same time and promote each other, which can increase the temperature of the material steadily and evenly.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of the reactor of the present invention.

Fig. 2 is a schematic diagram of the spiral aeration tube of the reactor of the present invention.

Fig. 3 is a schematic diagram of nozzle spraying water flow of the reactor of the present invention.

The symbols in the figure indicate as follows:

1-tank body, 1'-tank cover, 2-motor, 3-stirring shaft, 4-stirring paddle, 5-feeding port, 6-discharging port, 7-observation port, 8-bracket, 9-bearing box, 10-sphere, 11-flexible sealing film, 12-seal chamber, 13-nozzle, 14-electric heating tube, 15-thermometer, 16-water pump, 17-pipeline, 18-exhaust pipe, 19-pressure relief valve, 20-water intake, 21-intake pipe, 22-spiral aeration pipe, 23-pipeline, 24-gas heating device.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, it is a reaction kettle of the present invention, which consists of a tank body 1 and a tank cover 1' arranged above the tank body 1. An exhaust pipe 18 is installed, and a pressure relief valve 19 is installed on the exhaust pipe 18. An observation port 7 and a thermometer 15 inserted into the tank body 1 are also installed on the tank cover 1'. The tank body 1 is provided with a feeding port 5, an outlet The material opening 6, the tank cover 1' is installed with a stirring shaft 3 protruding into the tank body 1 and driven by a motor 2, the bottom of the stirring shaft 3 is fixed with a stirring paddle 4, a round hole is opened in the center of the tank cover 1', and the top of the round hole A bracket 8 is fixed, and a sealed spherical bearing (composed of a bearing box 9 and a ball 10) is arranged in the bracket 8. The ball 10 of the sealed spherical bearing is connected to the stirring shaft 3, and the bearing box 9 of the sealed spherical bearing is fixed with the bracket 8. The round hole and the ball 10 is fixed with an annular flexible sealing film 11, and the inner and outer sides of the annular flexible sealing film 11 are respectively sealed and connected with the sphere 10 and the round hole of the tank cover through flanges; a sealing cavity 12 is formed between the flexible sealing film 11 and the support 8, and the sealing cavity 12 is filled with pure water; the bottom of the tank body 1 is equipped with a spiral electric heating tube 14, the inner wall of the tank body 1 above the electric heating tube 14 is fixed with a nozzle 13 for spraying in an obliquely downward direction, and the bottom of the tank body below the electric heating tube 14 A water intake 20 is fixed, and a pipeline 17 connecting the water intake 20 with the nozzle 13 is arranged outside the tank body, and a water pump 16 is installed on the pipeline 17 . The water pump can be used to draw the material from the bottom of the tank and spray it out from the nozzle. On the one hand, it can improve the mixing effect, and on the other hand, it can improve the uniformity of heating.

As shown in Figure 1, the reactor of this example also has a gas heating device 24 and an inlet pipe 21 inserted into the tank body from the bottom. The inert gas source is connected through the pipeline 23, and the end of the inlet pipe 21 inserted into the tank body 1 is connected to the spiral aeration tube 22 installed in the tank body (see Figure 2). The spiral aeration tube 22 is located under the electric heating tube 14.

On the one hand, the reaction kettle uses the air inlet pipe to deliver heated inert gas to the inside of the tank body, which can quickly transfer heat to the materials in the tank body to achieve the purpose of heating the materials. At the same time, the gas ejected from the aeration pipe moves upward, which helps It is used to convect the material and improve the heating efficiency of the electric heating tube; on the other hand, this equipment can use the water pump to draw the material from the bottom of the tank and spray it out from the nozzle, which can improve the stirring effect and the heating uniformity at the same time.

As shown in FIG. 3 , in this example, the injection direction C of the nozzle 13 is opposite to the rotation direction A of the stirring shaft. In this example, in addition to the revolution, the stirring paddle also performs autobiography. In the figure, B is the rotation direction of the stirring paddle. Among the figure, 1 is the tank body.

In addition to the above-mentioned embodiments, the present invention can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (6)

1. A reaction kettle, comprising a tank body, a tank cover, a stirring motor, a stirring shaft, and a stirring paddle, the tank body is provided with a feed inlet and a discharge port, and it is characterized in that: a circular hole is provided in the center of the tank cover, A bracket is fixed above the round hole, and a sealed spherical bearing is arranged in the bracket, the ball of the sealed spherical bearing is connected to the stirring shaft, the bearing box of the sealed spherical bearing is fixed with the bracket, and a flexible seal is fixed between the round hole and the ball. A sealed cavity is formed between the flexible sealing film and the bracket, and the sealed cavity is filled with pure water; an electric heating tube is installed at the bottom of the tank body, and the inner wall of the tank body above the electric heating tube is fixed with a The nozzle for spraying in the direction, the bottom of the tank body below the electric heating tube is fixed with a water inlet, the outside of the tank body is provided with a pipeline connecting the water inlet and the nozzle, and a water pump is installed on the pipeline; the reaction kettle also includes a gas heating device And insert an inlet pipe from the bottom into the tank body, the inlet pipe is connected with the outlet end of the gas heating device, the inlet end of the gas heating device is connected to the inert gas source through a pipeline, and the end of the inlet pipe inserted into the tank body is connected A spiral aeration pipe installed in the tank body, the spiral aeration pipe is located below the electric heating pipe, an exhaust pipe is installed on the tank cover, and a pressure relief valve is installed on the exhaust pipe. 2. The reactor according to claim 1, characterized in that: an observation port is installed on the tank cover. 3. The reaction kettle according to claim 1, characterized in that: said tank cover is equipped with a thermometer inserted into the tank body. 4. The reactor according to claim 1, characterized in that: the flexible sealing film is ring-shaped, and the inner and outer sides are respectively sealed and connected to the sphere and the round hole of the tank cover through flanges. 5. The reaction kettle according to claim 1, characterized in that: the interface between the can lid and the can body is snap-fitted. 6. The reaction kettle according to claim 1, characterized in that: the injection direction of the nozzle is opposite to the rotation direction of the stirring shaft.