CN209005961U - A kind of decanter centrifuge housing sealing device - Google Patents

Abstract

A kind of decanter centrifuge housing sealing device, it is socketed housing including housing and rotor, outside rotor, the junction of housing and two ends of rotor is all made of labyrinth seal structure, several radially mounted blades, the installation direction of the blade of two ends of rotor are opposite on the connecting pin of the rotor of junction.The device is skillfully constructed, is of simple structure and low cost, and blade is rotated with rotor, can control the gas flow of casing interior, and certain negative pressure is formed in casing interior, can effectively prevent the fuel gas and dust in housing from leaking.

Description

A kind of decanter centrifuge housing sealing device

Technical field

The invention belongs to separation equipment technical fields, and in particular to a kind of decanter centrifuge housing sealing device.

Background technique

Decanter centrifuge is the precipitation apparatus of a kind of horizontal screw unloading, continuous operation, its working principle is that rotary drum and spiral shell Rotation is continually introduced into inside auger conveyor with the rotation of certain differential same-directional high-speed, material by feed pipe, and rotary drum is entered after acceleration, Under centrifugal force effect, heavier solid formation is deposited on formation sediment layer on rotatory drum wall.Auger conveyor connects the solid formation of deposition It is continuous to be constantly pushed into rotary drum tapered end, through slag-drip opening discharge machine outside.Lighter liquid phase object then forms internal layer pendular ring, is overflow by rotary drum big end Head piece continuously overflows rotary drum, through leakage fluid dram discharge machine outside.Labyrinth seal structure is wherein generally used between housing and rotor, is prevented Material (usually liquid phase) leakage, pollutes environment and machine.

For general material, solid content is extremely low in the liquid phase after separation, and particle is larger, after big end overflow port spilling It is directly discharged outside machine rapidly through leakage fluid dram, is hardly leaked to outside housing.But for some special material (such as silicon carbide Cutting fluid), solid phase particles are minimum, after the separation of decanter centrifuge, will form the minimum dust of particle, are full of entire housing Inside, since the gap of labyrinth seal structure is much larger than dust particles, with the progress of separation process, dust increases therewith in housing More, dust will be leaked to outside housing from labyrinth clearance, be polluted the environment, while can also be caused harm to the human body.

Utility model content

The purpose of this utility model is that: a kind of decanter centrifuge housing sealing device, by the gas for controlling casing interior Body flows to form negative pressure, can effectively prevent the fuel gas and dust in housing from leaking.

In order to reach the goals above, a kind of decanter centrifuge housing sealing device, including housing and rotor, rotor are socketed outside The junction of housing, housing and two ends of rotor is all made of labyrinth seal structure, radially pacifies on the connecting pin of the rotor of junction Several blades are filled, the installation direction of the blade of two ends of rotor is opposite.

The preferred embodiment of the utility model is: jointing, the external pumping of jointing are installed in the aperture of casing base Device.

Preferably, junction and rotor are located on same axis.

Preferably, the front end of rotor is truncated cone-shaped, and its rear end is cylinder.

The utility model has the beneficial effect that the device is skillfully constructed, is of simple structure and low cost, and blade is revolved with rotor Turn, can control the gas flow of casing interior, and form certain negative pressure in casing interior, can effectively prevent in housing Fuel gas and dust leaks.

Detailed description of the invention

The utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

Embodiment one

Referring to Fig. 1, the present embodiment provides a kind of decanter centrifuge housing sealing device, including housing 1 and rotor 3, turn Housing 1 is socketed outside son 3, the junction at 3 both ends of housing 1 and rotor is all made of 2 sealing structure of labyrinth, the company of the rotor 3 of junction Several upper radially mounted blades 4 of end are connect, the installation direction of the blade 4 at 3 both ends of rotor is opposite.

Jointing 5,5 external air extractor of jointing are installed in the aperture of 1 bottom of housing.

Junction and rotor 3 are located on same axis.

The front end of rotor 3 is truncated cone-shaped, and its rear end is cylinder.

Several blades 4 are welded on rotor 3 at 2 sealing of labyrinth, when centrifuge works normally, blade 4 is with rotor 3 one Rise rotation, axial flow will be generated, airflow direction is determined by the installation direction of blade 4, two groups of 4 installation directions of blade on the contrary, So that the air-flow that both sides generate flows in housing 1 outside housing 1, in this way it is prevented that dust is revealed.At the same time, under 1 bottom opening of housing installs a jointing 5, and an external air extractor can be the gas in housing 1 together with dust one It plays extraction housing 1 and is recycled.

In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change The technical solution to be formed is changed, the protection scope of the requires of the utility model is all fallen within.

Claims (4)

1. a kind of decanter centrifuge housing sealing device, which is characterized in that described in being socketed including housing and rotor, outside the rotor The junction of housing, the housing and the two ends of rotor is all made of labyrinth seal structure, the rotor of the junction Several radially mounted blades on connecting pin, the installation direction of the blade of the two ends of rotor are opposite.

2. a kind of decanter centrifuge housing sealing device according to claim 1, which is characterized in that the casing base Jointing, the jointing external air extractor are installed in aperture.

3. a kind of decanter centrifuge housing sealing device according to claim 1, which is characterized in that the junction and institute Rotor is stated to be located on same axis.

4. a kind of decanter centrifuge housing sealing device according to claim 1, which is characterized in that the front end of the rotor For truncated cone-shaped, its rear end is cylinder.