CN2461658Y

CN2461658Y - Guide outlet adjusting and double air outlet cyclone separator

Info

Publication number: CN2461658Y
Application number: CN 00265063
Authority: CN
Inventors: 倪文龙
Original assignee: Ni Zhenhong
Priority date: 2000-12-27
Filing date: 2000-12-27
Publication date: 2001-11-28
Anticipated expiration: 2010-12-27

Abstract

The utility model belongs to the field of a gas-solid two-phase separating device in a mine engineering, a building material engineering, and an environment protection engineering. A guide outlet adjusting type double air outlet cyclone separator is provided with two air outlets. An upper and a lower air outlet pipes are respectively connected with an upper opening and a lower opening of a middle flow guiding pipe. The middle part of the flow guiding pipe is provided with a flow guiding opening, the opening size of which can be adjusted. The lower part of the flow guiding pipe is provided with a reflection shield. Therefore, a core forced vortex which is the main part of the pressure loss of the existing cyclone separator can be eliminated, the energy consumption is reduced obviously, and the dust collecting efficiency can be improved.

Description

Adjustable pair of air outlet cyclone separator of flow-guiding mouth

The utility model belongs to the gas-solid two device for phase saparation fields in mine, building materials, the environment-friendly engineering.

The cyclone separator of domestic current technology, its operation principle is seen Fig. 3: dusty gas tangentially enters cylindrical shell 3b from import 2b, annular space between inside and outside cylindrical shell rotates downward and progresses into cone 6b, dust in the gas is subjected to the rotary centrifugal force effect and with flow separation and collide barrel, lose kinetic energy, after barrel falls into air valve 9b, discharge; Purifying gas flow after the separation compiles in the cone bottom, forms the stronger center inward turning flow direction and goes up through last air outlet 1b discharge, thereby realize that gas-solid two is separated.The advantage of this cyclone separator is simple in structure, small investment, and the running rate height, management maintenance is easy; It is satisfactory to both parties that shortcoming is that the separative efficiency and the pressure loss are difficult to.Because the purifying gas flow at cyclone separator center is one stronger bumpy flow (often claiming the core forced vortex), thereby the pressure loss that forms is more much bigger than peripheral swirling eddy (often claiming accurate free vortex), research and actual measurement proof, the useless pressure loss of core forced vortex account for the cyclone separator loss of total pressure 65～85% (" basic theories of dedusting technology and application " Chen Mingtang etc. writes, China Construction Industry Press, 1980), the pressure loss is the energy loss.In the last hundred years; experts and scholars have done a lot of effort to the improvement of cyclone separator both at home and abroad; can reach (" national environmental protection best practical technology compilation " China Environmental Science Press more than 95% to particle diameter 5～20 μ m dust dacron separative efficiencies; 1996), but higher separative efficiency must be followed the bigger pressure loss.Realize because the raising of rotation field of force separative efficiency often passes through to improve flow velocity, thereby the pressure loss of core forced vortex is further aggravated, in the actual production, people have to sacrifice high separating efficiency, in the hope of the lower pressure loss.With the manufacture of cement is example: the whole nation more than 30000 of 6000 cement plants is used for the cyclone preheater, about 18000 cyclone separators of cyclone separator in 3000 closed-circuit grinding operations of about 7.2 hundred million degree of year power consumption of the rotoclone collector that environmental protection gathers dust, 200 rotary kiln production lines, the medium separative efficiency (70～85%) of employing and the medium pressure loss (900～1700Pa) (" building materials industry waste gas pollution control and treatment " China Environmental Science Presses 90% or more, 1996), total power consumption electric weight 1,700,000,000 degree of cyclonic separation.Separate the remaining dust load 500mg/m in back ³More than, generally all need to gather dust joining secondary thereafter, remaining dust increase not only contaminated environment, and aggravated the wearing and tearing of equipment such as blower fan.

The utility model purpose is to provide a kind of adjustable pair of air outlet cyclone separator of flow-guiding mouth of eliminating above-mentioned prior art shortcoming: vortex in eliminating, significantly reduce the cyclone separator pressure loss, and energy efficient makes separative efficiency further improve simultaneously.

Embodiment of the present utility model is: adjustable pair of air outlet cyclone separator of flow-guiding mouth is made up of air inlet, cylindrical shell, cone, last discharge pipe, following discharge pipe, middle part mozzle, water conservancy diversion aperture adjusting device, collecting pipe, radiation shield, air valve.Two discharge pipes are connected respectively with the upper and lower mouth of middle part mozzle up and down, the little double horn shape conical surface in big centre, two is made at the mozzle middle part, the flow-guiding mouth of the individual aperture adjustable size joint of n (n=1～6) is set on the conical surface, flow-guiding mouth is by constituting around the movable vane of side bus rotation and the standing part of the double horn shape conical surface, the flow-guiding mouth size is by the control of water conservancy diversion aperture adjusting device, and the mozzle bottom is provided with the umbrella radiation shield.System is work like this: dusty gas tangentially enters cylindrical shell from air inlet, annular space rotation between cylindrical shell and discharge pipe, mozzle downwards and progress into cone, dust in the gas rotated in the field of force centrifugal action and with flow separation and collide barrel, lose kinetic energy, after barrel falls into air valve, in time discharge; Purifying gas flow after the gas solid separation is forced changed course through radiation shield, upwards and through flow-guiding mouth discharges from upper and lower air outlet along the rotation of mozzle outer wall.

The utlity model has following advantage:

1. with single air outlet of existing technology cyclone separator, change two air outlets into, use the one's intention as revealed in what one says prompt drop and hang down closely partly, the pressure loss significantly reduces;

2. set up mozzle, eliminate the formation of core forced vortex, promptly eliminated the main root that causes the cyclone separator pressure loss, not only direct value arranged energy-conservation, and the air quantity of blower fan because of windage (being the pressure loss) reduce strengthen, help the raising of separative efficiency again;

3. the cyclone separator of existing technology, air inlet is nearer apart from last discharge pipe end opening, when flow velocity hangs down, the dust-contained airflow partial short-circuit, cause dust-collecting efficiency lower, the discharge pipe end opening of going up of the present utility model connects with mozzle is suitable for reading, has fundamentally avoided the short circuit of dust-contained airflow, helps the raising of separative efficiency;

4. it is in order definite that radiation shield makes inside and outside rotational gas flow reversal point, avoided the cone bottom to separate dust earlier and be subjected to " secondary back-mixing " phenomenon that rotational gas flow is taken out of under the back.Thereby separative efficiency can further improve.

5. flow-guiding mouth is the only way which must be passed of discharging from dust after-purification air-flow through the outward turning flow point, thereby, the flow-guiding mouth size directly influences flow velocity, the pressure loss, separative efficiency, the utility model flow-guiding mouth adjusting device, make the whirlwind tube inner fluid field of force adjustable in order, can transfer to best separative efficiency and minimum pressure loss coupling according to the operating mode that changes easily.

Now further specify in conjunction with diagram and embodiment:

Fig. 1 is the operation principle and the structure diagram of adjustable pair of air outlet cyclone separator of flow-guiding mouth.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is existing technology cyclone separator operation principle sketch.

Among the figure: the last air outlet of 1-; The 2-air inlet; The 3-cylindrical shell; The 4-mozzle; The 5-radiation shield; The 6-cone; Air outlet under the 7-; The 8-collecting pipe; The 9-air valve; 10-water conservancy diversion aperture adjusting device; The 11-adjustable vane; The 12-adjusting rod; The soft connection of 13-; The 14-nut; 15-regulates support; The last air outlet of 1b-; The 2b-air inlet; The 3b-cylindrical shell; The 6b-cone; The 9b-air valve;

Adjustable pair of air outlet cyclone separator of flow-guiding mouth is made up of last discharge pipe 1, air inlet 2, cylindrical shell 3, middle part mozzle 4, radiation shield 5, cone 6, following discharge pipe 7, collecting pipe 8, air valve 9, water conservancy diversion aperture adjusting device 10.Middle part mozzle two cylindrical mouths connect with air outlet up and down respectively, the generatrix direction of the double horn shape conical surface at mozzle middle part, have n (n=1～6) individual water conservancy diversion slit, the part conical surface of conrotatory wind one side in each slit is made can be around the movable vane 11 of side bus rotation, the standing part of the movable vane and the double horn shape conical surface constitutes flow-guiding mouth, the flow-guiding mouth size is controlled by water conservancy diversion aperture adjusting device, water conservancy diversion aperture adjusting device is by adjusting rod 12, nut 13, be flexible coupling 14, regulating support 15 forms, regulating support and cylinder body outer wall just connects, adjusting rod one end and movable vane are hinged, the other end passes cylindrical shell and is regulating the support both sides with two nut screwing clampings, turn nut and can regulate the water conservancy diversion gap size, be flexible coupling in order to prevent that adjusting rod from passing through leaking out of cylindrical shell position, between support and adjusting rod, to be provided with.The mozzle bottom connects the umbrella radiation shield.Tangentially enter the dusty gas of cylindrical shell from air inlet, enter downwards in the cone process in rotation, dust is rotated field of force centrifugal force inertia and flies out and discharge with flow separation and after barrel falls into air valve; Purifying gas flow after the separation through the radiation shield changed course, upwards and through flow-guiding mouth is discharged from last air outlet tube mouth and following air outlet tube mouth along the rotation of mozzle outer wall, and is collected to collecting pipe, is aspirated by two phase flow drive unit (generally being blower fan).

Claims

1. adjustable pair of air outlet cyclone separator of flow-guiding mouth is made up of air inlet, cylindrical shell, cone, last discharge pipe, following discharge pipe, middle part mozzle, water conservancy diversion aperture adjusting device, collecting pipe, radiation shield, air valve, it is characterized in that: upper and lower two discharge pipes of cyclone separator are connected respectively with the upper and lower mouth of middle part mozzle, the little double horn shape conical surface in big centre, two is made at the mozzle middle part, the flow-guiding mouth of aperture adjustable size joint is set on the conical surface, and the mozzle bottom is provided with the umbrella radiation shield.

2. adjustable pair of air outlet cyclone separator of flow-guiding mouth according to claim 1, it is characterized in that: the flow-guiding mouth on the mozzle double horn shape conical surface is by forming around the movable vane of side bus rotation and the standing part of the double horn shape conical surface, adjusting rod one end and flow-guiding mouth movable vane strand connect, and the other end connects with nut with the adjusting support and can regulate.