CN209254760U - A kind of pre-mixing device of chemical reactor - Google Patents

Abstract

The utility model discloses a pre-mixing device for a chemical reaction kettle. It solves the problem that the premixed material cannot be pressed into the subsequent reaction kettle. A discharge pipe is arranged at the bottom of the inner cavity of the mixing tank, the discharge pipe is connected with a feeding pipe, a hollow shaft is vertically penetrated in the middle of the inner cavity of the mixing tank, and a rotating shaft is rotatably supported inside the hollow shaft. There is a stirring rod on the shaft, and a stirring blade is arranged on the rotating shaft. The motor drives the hollow shaft and the rotating shaft to rotate respectively through the driving parts. There is an air pump on the outer wall of one side of the mixing tank, and an air outlet pipe is arranged in the mixing tank. The air pipe is communicated with the air pump, and the air outlet pipe is provided with a one-way air outlet. The utility model has fast mechanical pre-mixing speed of materials, and its air pump can mix materials for aeration to shorten the mixing time of materials, and at the same time, it can also press the mixed materials in liquid or colloid form into the reaction kettle of the subsequent process from the feeding pipe.

Description

A kind of pre-mixing device of chemical reactor

technical field

The utility model relates to a mixer with a stirrer rotating around a vertical axis in a fixed container, in particular to a pre-mixing device for a chemical reaction kettle.

Background technique

We know that reactors are widely used in petroleum, chemical, rubber, pesticides, dyes, medicine, food, and pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation, etc., such as reactors, reaction pots , decomposition pot, polymerization kettle, etc.; the materials are generally carbon-manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys and other composite materials. The chemical raw materials should be fully mixed before entering the reaction kettle, and when the traditional mixing device mixes the raw materials, the bulk or powdery raw materials are easy to accumulate at the bottom of the mixing device, which affects the stirring efficiency.

For example, CN 207520906U disclosed in the Chinese utility model patent specification on June 22, 2018 discloses "a pre-mixing device for a chemical reactor", which includes a main body and a cover, and the lower end side of the main body is installed with a through hole by opening a through hole. A discharge pipe, a valve is installed on the discharge pipe, a fixed frame is installed inside the upper end of the main body, and a rotating shaft is installed in the middle of the fixed frame, the lower end of the rotating shaft is connected with the inner bottom of the main body through a bearing, and the outside of the rotating shaft is installed with a first stirring rod And the end of the first stirring rod is installed with a stirrer, the cover is installed on the upper end of the main body and the middle of the cover is installed with a motor, the output shaft end of the motor is connected with the upper end of the rotating shaft through a coupling, and the cover is installed on the motor. A feeding trough is installed on one side, the lower end of the feeding trough is connected with the inside of the main body through a feeding pipe, and a liquid feeding pipe is installed on the other side of the motor. The device can quickly premix the raw materials, and can effectively remove the residual raw materials. The pre-mixing device of this chemical reaction kettle, although a second rotating rod is installed at the lower end of the rotating shaft, and a scraper is installed at the end of the second rotating rod, and a guide groove is opened on one side of the scraper, during the process During mixing, the resistance of the scraper during rotation is effectively reduced and the rotation speed of the rotating shaft is ensured. By installing the first fixing block and the second fixing block on the outside of the main body that can be covered, and passing the upper end of the second fixing block through The groove of the first fixed block and the outer side of the upper end of the second fixed block are connected and fixed by a clamp, which is convenient for installation and disassembly, but the pre-mixing device of this chemical reaction kettle cannot realize the pre-mixing of materials and then press them into the chemical reaction kettle. (The pre-mixed material mentioned here is in liquid or colloidal form), it needs to be lifted manually or cooperated with other devices, which is not conducive to saving the production cost of the factory.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a kind of pre-mixing device of chemical reaction kettle, in order to solve the problem in the above-mentioned background technology that cannot realize material pre-mixing and then press it into chemical reaction kettle, it needs to be manually lifted or used to cooperate with other devices, and it is not necessary to It is beneficial to save the production cost of the factory.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a pre-mixing device for a chemical reaction kettle, which comprises a mixing tank, a support foot is provided at the bottom of the mixing tank, and the inner cavity bottom of the mixing tank is connected with a A discharge pipe, the discharge pipe is provided with a first solenoid valve, and the lower end of the discharge pipe is connected with a feeding pipe, characterized in that a feeding device is provided on the top side of the mixing tank, and the mixing tank is provided with a feeding device. A hollow shaft is vertically penetrated through the middle of the inner cavity of the tank, a rotating shaft is rotatably supported through the inside of the hollow shaft, a stirring rod is evenly arranged on the outer circumferential wall of the lower part of the hollow shaft, and the upper end of the hollow shaft is non-rotatably connected There is a first driven bevel gear, the lower end of the rotating shaft is provided with a stirring blade, the upper end of the rotating shaft is non-rotatably connected with a second driven bevel gear, and the other side of the top of the mixing tank is provided with a motor, The output shaft of the motor is non-rotatably connected with a drive bevel gear, the drive bevel gear is meshed with the first driven bevel gear and the second driven bevel gear, and the first solenoid valve and the motor are connected to each other through a control switch. The external power supply is electrically connected; an air pump is fixedly installed on the outer wall of the side of the mixing tank away from the feeding device, and an air outlet pipe is fixed on the inner wall of the mixing tank corresponding to the air pump through a fixing block, and the air outlet pipe is connected to the air outlet of the air pump. A communication pipe is arranged therebetween, a one-way air outlet is symmetrically arranged on the pipe wall of the air outlet pipe, and the air pump is electrically connected with an external power source through a control switch.

Preferably, the feeding device includes a feeding hopper with an open top, a second solenoid valve is provided at the bottom discharge port of the feeding hopper, a glass window is opened on the outer wall of the feeding hopper, and the glass window is A scale is provided, and the second solenoid valve is electrically connected with an external power source through a control switch.

Preferably, an observation window is provided on the tank wall of the mixing tank, and an observation glass is provided on the observation window.

Preferably, both the observation window and the observation glass are arranged in a circular shape.

The utility model realizes the stirring of the material through the stirring rod, and the material at the bottom of the mixing tank is pumped to the stirring area of the stirring rod through the stirring blade for stirring, so as to improve the mechanical pre-mixing speed of the material, and the material can be fully stirred; The tank is filled with gas, and aeration is performed during mixing to improve the mixing efficiency of materials. When discharging, the mixture material in liquid or colloidal shape can be pressed into the reaction kettle from the feeding tube. Compared with the prior art, the utility model has the advantages of simple structure, convenient use, shortening the pre-mixing time of materials, and improving production efficiency.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present invention;

Figure 2 is a schematic structural diagram of the feeding device of the present invention.

Labels in the figure: 1. Mixing tank, 2. Support foot, 3. Discharge pipe, 4. First solenoid valve, 5. Feed pipe, 6. Feed device, 61. Feed hopper, 62. Second solenoid valve , 63. Glass window, 64. Scale, 7. Hollow shaft, 8. Rotating shaft, 9. Stirring rod, 10. First driven bevel gear, 11. Stirring blade, 12. Second driven bevel gear, 13 . Motor, 14. Drive bevel gear, 15. Air pump, 16. Fixed block, 17. Air outlet pipe, 18. Connecting pipe, 19. One-way air outlet, 20. Observation window, 21. Observation glass.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

As shown in FIG. 1 , a pre-mixing device for a chemical reactor includes a mixing tank 1 , and supporting feet 2 are evenly arranged at the bottom of the mixing tank 1 , and the supporting feet 2 are used to support the mixing tank 1 .

In FIG. 1 , a discharge pipe 3 is connected to the bottom of the inner cavity of the mixing tank 1 , and a first solenoid valve 4 is arranged on the discharge pipe 3 . The first solenoid valve 4 is conventionally electrically connected to an external power source through a control switch. The lower end of the discharge pipe 3 is connected with a feed pipe 5, and the discharge pipe 3 and the feed pipe 5 are used for discharging or pressing the liquid or colloidal material into the subsequent reaction kettle.

In FIG. 1 , a feeding device 6 is provided on the top side of the mixing tank 1 .

It should be noted that, as shown in FIG. 2 , the feeding device 6 includes a feeding hopper 61 with an open top, and a second solenoid valve 62 is provided at the bottom discharge port of the feeding hopper 61 , wherein the second solenoid valve 62 is conventional It is electrically connected to an external power supply through a control switch. In FIG. 2 , a glass window 63 is provided on the front side wall of the feeding hopper 61 , and a scale 64 is provided on the glass window 63 . The volume of the material can be measured by the scale 64, which is beneficial to the pre-mixed material ratio mixing.

In FIG. 1 , a hollow shaft 7 is vertically arranged through the middle of the inner cavity of the mixing tank 1 , and a rotating shaft 8 is arranged through the hollow shaft 7 , and the rotating shaft 8 is rotatably supported in the hollow shaft 7 through a sealed bearing. The lower circumferential outer wall of the hollow shaft 7 is uniformly welded with a stirring rod 9, the upper end of the hollow shaft 7 is keyed with a first driven bevel gear 10, the lower end of the rotating shaft 8 is equipped with a stirring blade 11, and the upper end of the rotating shaft 8 is keyed. There is a second driven bevel gear 12, and a motor 13 is mounted on the other side of the top of the mixing tank 1. The motor 13 is conventionally electrically connected to an external power source through a control switch.

As shown in FIG. 1 , the output shaft of the motor 13 is keyed with a drive bevel gear 14 , and the drive bevel gear 14 meshes with the first driven bevel gear 10 and the second driven bevel gear 12 .

In FIG. 1 , an air pump 15 is fixedly installed on the outer wall of the mixing tank 1 on one side away from the feeding device 6 , and the air pump 15 is conventionally electrically connected to an external power source through a control switch.

In FIG. 1, an air outlet pipe 17 is fixed on the inner wall of the mixing tank 1 corresponding to the air pump 15 through the fixing block 16, and a communication pipe 18 is provided between the air outlet pipe 17 and the air outlet of the air pump 15, and the communication pipe 18 penetrates through the mixing tank. tank wall. As shown in FIG. 1 , one-way air outlet nozzles 19 are symmetrically arranged on the pipe wall of the air outlet pipe 17 .

The air pump 15 is controlled by the control switch to start, so that the air enters the air outlet pipe 17 from the communication pipe 18, and then is discharged from the one-way air outlet nozzle 19, so as to realize aeration during mixing and improve the mixing efficiency of materials. At the same time, it can also provide working pressure for subsequent processes.

As shown in FIG. 1 , an observation window 20 is opened on the tank wall of the mixing tank 1 , and an observation glass 21 is provided on the observation window 20 . By observing the glass 21 , the worker can observe the pre-mixing of the materials in the mixing tank 1 .

For the convenience of the manufacturing process, referring to FIG. 1 , both the observation window 20 and the observation glass 21 are designed to be circular.

A specific application of this embodiment is as follows: firstly, the material to be mixed is added to the feeding device 6, the volume of the required mixed material can be determined by the scale 64 set on the glass window 63, and then the second solenoid valve is controlled by the control switch 62 is opened, so that the measured material falls into the mixing tank 1, and then the second solenoid valve 62 is closed, so that subsequent materials can be measured; after all materials are measured, the control switch is used to control the motor 13 to start, and the motor 13 passes through the active cone. The gear 14 drives the first driven bevel gear 10 and the second driven bevel gear 12 to rotate respectively, thereby driving the rotation of the hollow shaft 7 and the rotating shaft 8 respectively, thereby driving the stirring rod 9 and the stirring blade 11 to rotate, and the stirring blade 11 Contrary to the rotation direction of the stirring rod 9, through the stirring of the stirring blade 11, the liquid or colloidal material at the bottom can be rolled up, so that the stirring rod 9 can efficiently stir the material; the operation of the air pump 15 is controlled by the control switch, so that the gas Enter the air outlet pipe 17 through the communication pipe 18, and then discharge from the one-way air outlet nozzle 19, so that the gas is aerated and raised in the mixture during mixing; And the feeding pipe 5 is discharged, or the liquid or colloidal material is pressed into the reaction kettle of the subsequent process through the feeding pipe 3 and the feeding pipe 5.

The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Claims (4)

1. a pre-mixing device of a chemical reaction kettle, it comprises a mixing tank, is provided with a support foot at the bottom of the mixing tank, the inner cavity bottom of the mixing tank is communicated with a discharge pipe, and the discharge pipe is provided with There is a first solenoid valve, the lower end of the discharge pipe is connected with a feeding pipe, and it is characterized in that: a feeding device is arranged on one side of the top of the mixing tank, and a hollow center is vertically penetrated through the middle of the inner cavity of the mixing tank. The inner part of the hollow shaft is rotatably supported with a rotating shaft, the lower circumferential outer wall of the hollow shaft is evenly provided with a stirring rod, and the upper end of the hollow shaft is non-rotatably connected with a first driven bevel gear, the rotating The lower end of the shaft is provided with a stirring blade, the upper end of the rotating shaft is non-rotatingly connected with a second driven bevel gear, the other side of the top of the mixing tank is provided with a motor, and the output shaft of the motor is non-rotatingly connected with a drive. a bevel gear, the driving bevel gear meshes with the first driven bevel gear and the second driven bevel gear, the first solenoid valve and the motor are electrically connected to an external power supply through a control switch; in the mixing tank An air pump is fixedly installed on the outer wall of one side away from the feeding device, an air outlet pipe is fixed on the inner wall of the mixing tank corresponding to the air pump through a fixing block, and a communication pipe is arranged between the air outlet pipe and the air outlet of the air pump, and the outlet A one-way air outlet is symmetrically arranged on the pipe wall of the air pipe, and the air pump is electrically connected with an external power source through a control switch. 2 . The pre-mixing device for a chemical reaction kettle according to claim 1 , wherein the feeding device comprises a feeding hopper with an opening at the top, and the bottom discharge port of the feeding hopper is provided with a second hopper. 3 . A solenoid valve, a glass window is opened on the outer wall of the feeding hopper, a scale is arranged on the glass window, and the second solenoid valve is electrically connected to an external power supply through a control switch. 3 . The pre-mixing device of a chemical reaction kettle according to claim 1 , wherein an observation window is provided on the tank wall of the mixing tank, and an observation glass is provided on the observation window. 4 . 4 . The pre-mixing device of a chemical reaction kettle according to claim 3 , wherein the observation window and the observation glass are both set to be circular. 5 .