WO2017157049A1

WO2017157049A1 - Fully sealed centrifugal extraction apparatus

Info

Publication number: WO2017157049A1
Application number: PCT/CN2016/107336
Authority: WO
Inventors: 顾秋林; 陈光华; 李剑英; 陆文达; 谭增术; 崔鹏程; 顾建军
Original assignee: 太仓顺达磁力泵科技有限公司
Priority date: 2016-03-18
Filing date: 2016-11-25
Publication date: 2017-09-21
Also published as: CN105617712A

Abstract

A fully sealed centrifugal extraction apparatus, comprising a high-speed motor (100), a transmission box (200), and a centrifugal extractor (300), a high-speed magnetic transmission apparatus (500) being arranged in the transmission box (200), a transmission shaft (301) being arranged in the centrifugal extractor (300), the magnetic transmission apparatus (500) comprising an active magnetic ring (501), an intermediate isolating sleeve (502), and a passive magnetic ring (503), the active magnetic ring (501) being sleeved over the outside of the intermediate isolating sleeve (502) and being connected to the high-speed motor (100), the passive magnetic ring (503) being arranged inside the intermediate isolating sleeve (502) and being connected to the transmission shaft (301), and the intermediate isolating sleeve (530) being in sealed communication with the centrifugal extractor (300). The present apparatus meets the sealing requirements for an extractor apparatus, and can resist chemical corrosion.

Description

Fully enclosed centrifugal extraction device

Technical field

The invention relates to the field of separation, and in particular to a fully enclosed centrifugal extraction device.

Background technique

At home and abroad, almost all centrifugal extractors have the motor in a vertical state, directly driving a high-speed rotating drum, thereby generating strong centrifugal force to achieve liquid-liquid two-phase mixing and separation. However, since most of the extractors are used in the environment of toxic and harmful, even radioactive chemicals, the leakage of these media around the rotating shaft is inevitable. In order to prevent the leakage of the separation medium in the system, the transmission shaft of the device is usually used more often. Packing seals are also mechanically sealed, but this type of structure, especially when the process system requires positive or negative pressure operation, has the disadvantages of short working cycle, complicated structure and troublesome maintenance, which makes it impossible to promote the market.

For the materials used to make the centrifugal extractor, the corrosive environment is mostly made of metal materials such as nickel-containing stainless steel, and some working conditions can not be maintained for a long time even with titanium alloy. Especially for the hydrochloric acid-containing process system, since the chloride ion corrosion activity is particularly strong, although a centrifugal extractor made of a non-metal material such as plexiglass or glass reinforced plastic is used, the strength of these materials and the performance of the binder used cannot be made. They are used stably.

In view of the defects of the prior art, a new type of centrifugal extraction device is urgently needed on the market, which can meet the sealing requirements of the centrifugal extraction device and is resistant to chemical corrosion.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the defects of the foregoing technology, and to provide a centrifugal extraction device capable of satisfying the requirements of the extraction device for sealing and chemical corrosion resistance.

In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

A fully enclosed centrifugal extraction device comprising a high speed motor, a transmission box and a centrifugal extractor, wherein the transmission box is provided with a high speed magnetic transmission device, and the centrifugal extractor is provided with a rotating shaft, the magnetic transmission The device includes an active magnetic ring, an intermediate spacer and a passive magnetic ring, wherein the active magnetic ring is sleeved outside the intermediate spacer and connected to the high speed motor, and the passive magnetic ring is disposed in the middle The inside of the spacer sleeve is connected to the drive shaft, and the intermediate spacer sleeve is sealingly connected with the centrifugal extractor.

Further, the centrifugal extractor includes a body, a first feed port disposed on a surface of the body, a second feed port, a heavy phase outlet, and a light phase outlet, and a centrifugal drum disposed inside the body, A centrifugal drum is coupled to the rotating shaft, wherein the body and the centrifugal drum are made of polyvinylidene fluoride or polyetheretherketone.

Further, the first feed port and the second feed port are horizontally disposed on opposite sides of the bottom of the body, and the level of the two is the same.

Further, the heavy phase outlet and the light phase outlet are horizontally disposed on opposite sides of the top of the body, and the heavy phase outlet is higher than the light phase outlet.

Compared with the prior art, the present invention has the following significant advantages and beneficial effects:

The magnetic drive prevents the motor from directly driving the drive shaft, thereby introducing an intermediate spacer to completely separate the transmission from the centrifugal extractor, enhancing the sealing of the extraction device; and also using corrosion-resistant materials to increase the machine's The service life also protects the mechanical components inside the bearing housing from corrosion by chemical media in the system.

DRAWINGS

Fig. 1 is a cross-sectional structural view showing a sealed centrifugal extracting apparatus of the present invention.

2 is a cross-sectional structural view of a magnetic transmission device.

Figure 3 is a structural view of a centrifugal extractor.

Description of the reference signs:

100, high speed motor, 200, gearbox,

300, centrifugal extractor, 400, buffer bracket,

500, magnetic transmission device, 501, active magnetic ring,

502, intermediate isolation sleeve, 503, passive magnetic ring,

301, drive shaft, 302, first feed port,

303, the second feed port, 304, centrifugal drum,

305, heavy phase exports, 306, light phase exports,

307, the body.

detailed description

For the purpose of full disclosure, the present invention will be further described in detail below with reference to the embodiments. It is understood that the specific embodiments described below are merely illustrative of the invention and are not intended to limit the scope of the invention.

As shown in FIG. 1, a fully enclosed centrifugal extractor includes a high speed motor 100, a transmission case 200, a centrifugal extractor 300, a buffer bracket 400, and a magnetic transmission device 500. The centrifugal extractor 300 is disposed on the buffer bracket 400. The transmission box 200 is connected to the buffer bracket 400. The magnetic transmission device 500 is disposed in the transmission box 200. The high speed motor 100 is disposed in the transmission box 200. on. The shaft of the high speed motor 100 is connected and fixed to the active magnetic ring 501, and the passive magnetic ring 503 is connected to the transmission shaft 301. The intermediate isolation sleeve 502 is sealingly connected with the body 307 of the centrifugal extractor 300. . A cushion pad is disposed at the bottom of the buffer bracket 400.

As shown in FIG. 2, the magnetic transmission device 500 includes an active magnetic ring 501, an intermediate spacer 502, a passive magnetic ring 503, the passive magnetic ring 503 is disposed in the intermediate spacer 502, and the active magnetic ring 501 is disposed in the The intermediate spacer 502 is outside and surrounds the intermediate spacer 502.

As shown in FIG. 3, the centrifugal extractor 300 includes a drive shaft 301, a first feed port 302, a second feed port 303, a centrifugal drum 304, a heavy phase outlet 305, a light phase outlet 306, and a body 307. The centrifugal drum 304 is coupled to the transmission shaft 301, and the other end of the transmission shaft is coupled to the bearing housing 200. The first inlet 302 and the second inlet 303 are disposed on the side of the body 307. The light phase outlet 306 is disposed at a side of the bottom of the body 307 and above the horizontal plane of the first inlet 302 and the second inlet 303, and the heavy phase outlet 305 is disposed at the side of the body 307. And above the light level exit 306 level. The inner diameter of the centrifugal drum 304 is divided into several types of φ20, φ34, φ55, φ80, φ100, and φ150. The body and the centrifugal drum are made of a metal material (stainless steel, titanium alloy) or a non-metal (polyvinylidene fluoride or polyether ether ketone) material, and the latter is resistant to various inorganic acids such as hydrochloric acid.

The contact body between the body 307, the centrifugal drum 304 and the like is made of chemically resistant organic polymer material polyvinylidene fluoride (PVDF) or polyetheretherketone (PEEK).

The working process of the fully enclosed centrifugal extraction device is as follows: the high speed motor 100 is started, the high speed motor 100 drives the active magnetic ring 501, and the passive magnetic ring 503 is synchronously rotated by the magnetic coupling technology, and the passive magnetic ring 503 is centrifuged through the transmission shaft 301. The drum 304 rotates, and the two different specific gravity liquid materials are processed into the body through the first inlet 302 and the second inlet 303, and are fully mixed in the annulus formed by the body 307 and the centrifugal drum 304. After entering the centrifugal drum 304, due to the high-speed rotation, the larger material is thrown to the inner wall of the centrifugal drum, and is discharged from the upper vertical small hole, and finally enters the heavy phase outlet 305 to complete the separation of the heavy phase medium. The medium with a small specific gravity in the mixed liquid can only be moved near the center of the drum due to the relatively small centrifugal force, and flows out from the horizontal small hole to enter the light phase outlet 306, so that the light phase medium can be separated, so that it can be quickly completed in a repeated manner. Liquid-liquid separation chemical operation of two different materials.

The beneficial effects of the present invention are as follows:

1. The magnetic drive is used to avoid the motor directly driving the drive shaft. The intermediate isolation sleeve is provided to completely isolate the transmission device and the centrifugal extractor from the outside world, so that the dangerous medium such as toxic and harmful in the system is completely sealed, and the device is realized. The leak-free operation satisfies the sealing requirements of the extraction device.

2. The contact parts of the device and the process medium are made of corrosion-resistant materials, especially non-metal (polyvinylidene fluoride or polyether ether ketone) materials, especially in the inorganic acid process environment such as hydrochloric acid, which can improve the service life of the equipment.

The above-mentioned embodiments are merely illustrative of the embodiments of the present invention, and the description thereof is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A fully enclosed centrifugal extraction device comprising a high speed motor, a gearbox and a centrifugal extractor, wherein the transmission box is provided with a high speed magnetic transmission device, and the centrifugal extractor is provided with a rotating shaft, wherein The magnetic transmission device includes an active magnetic ring, an intermediate spacer and a passive magnetic ring, wherein the active magnetic ring is sleeved outside the intermediate spacer and connected to the high speed motor, and the passive magnetic ring is set Inside the intermediate spacer sleeve and connected to the drive shaft, the intermediate spacer sleeve is sealingly connected with the centrifugal extractor.
The fully enclosed centrifugal extracting apparatus according to claim 1, wherein the centrifugal extractor comprises a body, a first inlet port disposed on a surface of the body, a second inlet port, a heavy phase outlet, and a light phase outlet, and a centrifugal drum disposed inside the body, the centrifugal drum being connected to the rotating shaft, wherein the body and the centrifugal drum are made of polyvinylidene fluoride or polyetheretherketone .
The fully enclosed centrifugal extracting apparatus according to claim 2, wherein the first feed port and the second feed port are horizontally disposed on opposite sides of the bottom of the body, and both The level is the same.
The fully enclosed centrifugal extraction apparatus according to claim 2, wherein the heavy phase outlet and the light phase outlet are horizontally disposed on opposite sides of the top of the body, and the heavy phase outlet is higher than The light phase is exported.