CN214106963U

CN214106963U - Corrosion-resistant mixer

Info

Publication number: CN214106963U
Application number: CN202022688419.4U
Authority: CN
Inventors: 杨开焱
Original assignee: Jiangsu Taifulong Anti Corrosion Equipment Co ltd
Current assignee: Jiangsu Taifulong Anti Corrosion Equipment Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-09-03
Anticipated expiration: 2030-11-19

Abstract

The utility model relates to a chemical production field provides a corrosion-resistant blender. Different corrosion-resistant measures are adopted according to different parts of the mixer, and the corrosion-resistant effect is achieved by selecting a mode of lining polytetrafluoroethylene in a steel pipe and a mode of full polytetrafluoroethylene in parts. Meanwhile, acid liquor is premixed through structural design, so that the corrosivity of acid is reduced, the acid and alkali are mixed in a mixing pipe and then are sprayed, the mixing reaction is accelerated, and the corrosion time is reduced; the reaction speed is accelerated by the lifting of the helical blades during stirring. The technical scheme has the advantages of good mixing effect, high efficiency and long service life.

Description

Corrosion-resistant mixer

Technical Field

The utility model relates to a chemical production field, concretely relates to corrosion-resistant blender.

Background

The chemical production process has acid-base neutralization reaction. And (3) mixing the strong acid and the alkali in the mixer, then carrying out neutralization reaction, and pumping the reacted solution out of the mixing pool by a pump. Because strong acid and alkali enter the mixing tank through the pipeline, the pipeline and the tank body are easily corroded, and the service life of the mixer is influenced.

Disclosure of Invention

In order to overcome the defects that the mixer in the prior art is easy to corrode and has short service life, the utility model aims to provide a corrosion-resistant mixer.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a corrosion-resistant mixer comprises a main mixing cavity, wherein an upper cover is arranged at the top of the main mixing cavity, the main mixing cavity and the upper cover are fixedly connected through a flange, a drain pipe is arranged at the bottom of the main mixing cavity, a vertical mixing pipe and a lifting pipe are connected onto the upper cover, a jet orifice is arranged on the side face of the bottom of the mixing pipe, a three-way pipe is connected to the top of the mixing pipe through a flange, the upper end and the lower end of the three-way pipe are respectively connected with an acid liquid premixing pipe and the mixing pipe through flanges, and an alkali liquid pipe is arranged at the other end of the three-way pipe; the acid liquid premixing tube comprises a primary mixing tube body and an input tube body, wherein the top of the primary mixing tube body is provided with a water inlet and an acid inlet, and the input tube body extends into the mixing tube from the bottom of the primary mixing tube body; the lift pipe is formed by connecting a plurality of stages of lift pipe bodies end to end, a motor is installed on the lift pipe body at the top, the motor is connected with a rotating shaft through a coupler, a helical blade is installed on the rotating shaft, the rotating shaft and the helical blade are located in the lift pipe, one of the lift pipe bodies outside the main mixing cavity is a three-way lift pipe, and a horizontal pipe of the three-way lift pipe is a liquid mixing outlet pipe.

Furthermore, the sewage discharge pipe and the three-way pipe are made of PTFE lined steel pipes, and the mixing pipe and the lifting pipe are made of perfluorinated pipes.

Furthermore, lining tetrafluoro steel pipe includes steel pipe and fluorine bush, the inside of outer wall laminating in the steel pipe of fluorine bush, the both ends evagination of bush and the terminal surface laminating of steel pipe.

Furthermore, fluorine materials are coated on the outer sides of the spiral blade and the rotating shaft.

After taking above technical scheme, the beneficial effects of the utility model are that: different corrosion-resistant measures are adopted according to different parts of the mixer, and the corrosion-resistant effect is achieved by selecting a mode of lining polytetrafluoroethylene in a steel pipe and a mode of full polytetrafluoroethylene in parts. Meanwhile, acid liquor is premixed through structural design, so that the corrosivity of acid is reduced, the acid and alkali are mixed in a mixing pipe and then are sprayed, the mixing reaction is accelerated, and the corrosion time is reduced; the reaction speed is accelerated by the lifting of the helical blades during stirring. The technical scheme has the advantages of good mixing effect, high efficiency and long service life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a steel pipe lined with PTFE.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in the figure, the corrosion-resistant mixer comprises a main mixing cavity 1, an upper cover 2, a mixing pipe 3, a mixing three-way pipe 4, an acid liquid premixing pipe 5, a lifting pipe 6, a lifting three-way pipe 7, a motor 8, a rotating shaft 9 and a helical blade 10.

The main mixing cavity 1 is a steel cavity with polytetrafluoroethylene on the inner side, and a drain pipe 11 is installed at the bottom of the main mixing cavity 1. The upper cover 2 covers the top of the main mixing cavity 1 and is fixed by flange connection, and the bottom surface of the upper cover 2 is made of polytetrafluoroethylene material.

The mixing pipe 3 and the riser pipe 6 vertically pass through the upper cover 2 and are inserted into the main mixing chamber 1. The mixing pipe 3 is made of polytetrafluoroethylene, a jet orifice 12 is arranged on the side face of the bottom of the mixing pipe 3, and the top of the mixing pipe 3 is connected with a mixing three-way pipe 4 through a flange. The upper end and the lower end of the mixing three-way pipe 4 are respectively connected with the acid liquid premixing pipe 4 and the mixing pipe 3 through flanges, and the level of the mixing three-way pipe 4 is an alkali liquid pipe 13; the mixing three-way pipe 4 is a steel pipe lined with polytetrafluoroethylene.

The acid liquid premixing tube 5 consists of a primary mixing tube body 51 and an input tube body 52, the top of the primary mixing tube body 51 is provided with a water inlet 53 and an acid inlet 54, and the input tube body 52 penetrates through the mixing three-way tube 4 from the bottom of the primary mixing tube body 51 and extends into the mixing tube 3; the primary mixing pipe body 51 is a polytetrafluoroethylene pipe as an inner liner, and the input pipe body 52 is a polytetrafluoroethylene pipe.

The riser 6 consists of a lower riser body 61, a lifting tee 7 and an upper riser body 62. The lower lifting pipe 61 extends into the main mixing cavity 1, and the lower lifting pipe 61 is made of polytetrafluoroethylene. The lifting three-way pipe 7 is arranged between the upper lifting pipe and the lower lifting pipe. The lifting pipe 62 and the lifting three-way pipe 7 are both steel pipes lined with polytetrafluoroethylene. The horizontal pipe of the lifting three-way pipe 7 is a neutralization liquid outlet pipe 14. The motor 8 is arranged on the upper lifting pipe 62, the motor 8 is connected with the rotating shaft 9 through a coupler, the rotating shaft 9 penetrates through the upper lifting pipe 62 and the lifting three-way pipe 7 and extends into the lower lifting pipe 61, the rotating shaft 9 is provided with the helical blade 10, and the rotating shaft 9 and the helical blade 10 are made of hastelloy alloy coated with polytetrafluoroethylene.

The method for lining the polytetrafluoroethylene in the steel pipe comprises the following steps: molding polytetrafluoroethylene powder under 270MPa pressure, sintering into a pipe with the internal diameter larger than that of a sense organ by 1mm, drawing the pipe into a steel pipe in a mechanical mode, attaching flanges 15 at two ends to two end faces of the steel pipe to form sealing, placing the steel pipe into a heating furnace, heating to 315 ℃ to enable an inner liner to be attached to the steel pipe, and finally injecting compressed air for pressure maintaining and cooling.

The working principle of the technical scheme is as follows: strong acid and water are premixed and diluted in the acid liquor premixing tube 5 and then enter the mixing tube 3, alkali liquor enters the mixing tube 3 from the alkali liquor tube 13, is subjected to preliminary neutralization reaction with the acid liquor and then enters the main mixing cavity 1 from the injection port 12 for further mixing, the helical blade 10 in the lifting tube 6 is driven by the motor 8 to be stirred and lifted, and the neutralized liquid after the reaction is output from the neutralized liquid outlet tube 14 while the reaction is promoted.

Claims

1. A corrosion-resistant mixer comprises a main mixing cavity, wherein an upper cover is arranged at the top of the main mixing cavity, the main mixing cavity and the upper cover are fixedly connected through a flange, and a sewage discharge pipe is arranged at the bottom of the main mixing cavity; the acid liquid premixing tube comprises a primary mixing tube body and an input tube body, wherein the top of the primary mixing tube body is provided with a water inlet and an acid inlet, and the input tube body extends into the mixing tube from the bottom of the primary mixing tube body; the lift pipe is formed by connecting a plurality of stages of lift pipe bodies end to end, a motor is installed on the lift pipe body at the top, the motor is connected with a rotating shaft through a coupler, a helical blade is installed on the rotating shaft, the rotating shaft and the helical blade are located in the lift pipe, one of the lift pipe bodies outside the main mixing cavity is a three-way lift pipe, and a horizontal pipe of the three-way lift pipe is a liquid mixing outlet pipe.

2. The corrosion-resistant mixer of claim 1 wherein the blow-off pipe and tee are lined tetrafluoro steel pipe and the mixing pipe and riser are perfluorinated pipe.

3. The corrosion-resistant mixer of claim 2 wherein the teflon-lined steel tube comprises a steel tube and a fluorine lining, the outer wall of the fluorine lining is fitted to the inside of the steel tube, and the two everted ends of the lining are fitted to the end faces of the steel tube.

4. The corrosion-resistant mixer of claim 1, wherein said helical blades and shaft are coated with a fluorine material.