CN202885202U

CN202885202U - Sleeve-type air funnel

Info

Publication number: CN202885202U
Application number: CN 201220622665
Authority: CN
Inventors: 王汉青; 冯波; 寇广孝; 杨景华
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-04-17
Anticipated expiration: 2022-11-22

Abstract

The utility model discloses a sleeve-type air funnel. The sleeve-type air funnel comprises an outer barrel (1), an inner barrel (2) and a switching adjustable petal-shaped switch (3), wherein elliptic air outlet holes are formed in the outer barrel (1); the inner barrel (2) is a hollow barrel without an opening and is mounted on the upper side in the outer barrel (1); and the sectional area of the inlet of the air funnel is adjusted by the switching adjustable petal-shaped switch (3) which is arranged at the inlet of the air funnel, so that the air supply requirement of different modes can be met. The sleeve-type air funnel has the beneficial effect that the effect of displacement ventilation can be effectively improved, and the purposes of efficiently removing noxious substances and creating a favorable indoor working environment are achieved.

Description

A kind of telescopic air funnel

Technical field

The utility model relates to a kind of tuyere device of replacement aeration, and it is terminal to be specially a kind of novel replacement aeration---telescopic air funnel.

Background technology

The outer production workshop of Present Domestic produces a large amount of gaseous states and granular metal nuisance (these nuisance general designation weld fumes) in welding process, weld fumes is aerosol mixt mostly, alienation and form are suspended in the air, very easily enter human body from respiratory tract, cause multiple chronic disease, human body is produced harm.The improvement method of weld fumes mainly contains 3 kinds at present: 1, personal protection: be the welder mask is provided, although this mode is protected the welder, but the weld fumes in the whole workshop still can't be governed, and can produce certain harm to human body; 2, local ventilation: directly administer for the higher position of weld fume concentration, although this administration way can be got rid of weld fumes substantially fully, affected by welding post, factory building layout etc.; 3, general ventilation: need to ventilate to whole factory building, ventilation is larger, and will be according to the height of the Height Adjustment of pollution sources air-supply, and this air supply mode power consumption is large, and ventilation effect is undesirable.

At present, its end common are the shapes such as cylindrical air funnel, elliptical cylinder-shape air funnel in the displacement ventilation system, but the research to air funnel is few, wherein its structure of the air funnel applied for of " a kind of air funnel " (patent No. ZL 200920063518.4) forms and mainly contains cylindrical shell, adjustment barrel, lifting disk, central shaft, connecting rod, rotating shaft etc., adjustment barrel is installed on the cylindrical shell internal upper part, adjustment barrel can be with respect to the area of barrel body rotation with the air-out aperture on adjusting cylindrical shell top, lifting disk is sleeved on the central shaft, can move up and down to regulate the air-supply height.There is following problem in this air funnel when using: the first, and inner barrel is larger along the velocity attenuation of short transverse, and the direction of air-out also difference is very large, has affected the effect of air-out; The second, the air-flow in aperture is at the short transverse skewness, and what have may also be in the air draught state, has affected air-supply efficient.

In view of the foregoing, need development a kind of high-effect, less and discharge velocity is at the more uniform novel air funnel of short transverse at cylindrical shell height velocity attenuation.

The utility model content

Technical problem to be solved in the utility model provides the low decay of a kind of short transverse, air outlet air-flow distribution uniform, the obvious telescopic air funnel device of directionality.

Based on above-mentioned purpose, the technical scheme that the utility model adopts is: design a kind of telescopic air funnel device, comprise outer cylinder body 1, inner barrel 2, the adjustable petal switch 3 of switching, central rotating shaft 4, large floor 5, riblet plate 6, adjustment disk 7 and cylinder bottom plate 8; Described inner barrel 2 connects through large floor 5 in outer cylinder body 1 inner upper side, described central rotating shaft 4 is at outer cylinder body 1, be connected with inner barrel 2 through riblet plate 6 on the central shaft of inner barrel 2, its bottom is passed cylinder bottom plate 8 and is connected with self-con-tained unit, described switching is adjustable petal switch 3, petal is that semi circular surface is staggered, petal only has half-open position when opening fully, when closure, there is semi-closure, the full cut-off two states, be installed in the top upside of inner barrel 2 and be in outer cylinder body 1, between the inner barrel 2, and link through linkage a9 with central rotating shaft 4, described adjustment disk 7 is in outer cylinder body 1 inner lower, is sleeved on central rotating shaft 4 and links through linkage b10 with central rotating shaft 4.

The running of air-flow is: (1) summer cooling: open and close adjustable petal switch during cooling condition and be in full-gear, air-flow enters the bottom of air funnel through inner barrel, part air-flow is directly by the air-out small hole stream on the outer cylinder body, and another part air-flow is first through the drainage of the adjustment disk air-out small hole stream on outer cylinder body again; (2) Winter heat supply: open and close adjustable petal switch during for thermal condition and be in closed condition, air-flow flows through through between inside and outside cylindrical shell, and air-flow is directly by the air-out small hole stream on the outer cylinder body; (3) transition season ventilates: open and close adjustable petal switch during the ventilation operating mode and be in the semi-closure state, air-flow enters air funnel simultaneously through between inner barrel and inside and outside cylindrical shell, upper air is the air-supply small hole stream on outer cylinder body directly, lower flow then after the drainage of adjustment disk at the air-supply small hole stream on outer cylinder body.

Beneficial effect major embodiment the following aspects of this utility model:

1) sets up inner barrel, can make the air-supply air-flow directly arrive the interior bottom of air-supply cylindrical shell, effectively reduce the decay of air-supply cylindrical shell internal gas flow speed;

2) in the porch of air-supply cylindrical shell the adjustable petal switch of switching is set, can regulate the entrance cross-sectional area of air-supply cylindrical shell, need with the air-supply that realizes different mode, open and close adjustable petal switch during cooling condition summer and be in full-gear, open and close adjustable petal switch during the Winter heat supply operating mode and be in closed condition, open and close adjustable petal switch when spring, ventilation in autumn operating mode and be in the semi-closure state;

3) speed that the air-out air-flow that can effectively regulate air funnel is set of inner barrel, the adjustable petal switch of switching and adjustment disk goes out flow path direction, makes ventilation effect more obvious.

Description of drawings

Fig. 1 air funnel perspective view.

Fig. 2 air funnel assembly structure schematic diagram.

Fig. 3 air funnel air vent mode air-supply schematic diagram.

Fig. 4 air funnel refrigeration mode air-supply schematic diagram.

Fig. 5 air funnel heating mode air-supply schematic diagram.

Fig. 6 opens and closes adjustable petal switch petal and arranges the expansion schematic diagram.

Among the figure: 1, outer cylinder body; 2, inner barrel; 3, open and close adjustable petal switch; 4, central rotating shaft; 5, large floor; 6, little floor; 7, adjustment disk; 8, cylinder bottom plate; 9, linkage a; 10 linkage b.

The specific embodiment

Below in conjunction with accompanying drawing specific works principle of the present utility model and the course of work are described further: such as the telescopic air funnel device of Fig. 1, consisted of by outer cylinder body 1, inner barrel 2, the adjustable petal switch 3 of switching, central rotating shaft 4, large floor 5, riblet plate 6, adjustment disk 7 and cylinder bottom plate 8.Wherein have the air-out aperture on the outer cylinder body 1, inner barrel 2 connects through large floor 5 in outer cylinder body 1 inner upper side, and cylinder bottom plate 8 is fixed on the bottom of outer cylinder body 1, consists of the cylindrical shell of air funnel.Open and close the top upside that adjustable petal switch 3 is installed in inner barrel 2 and be in the controlling organization that consists of the air duct inlet face between outer cylinder body 1, the inner barrel 2.Central rotating shaft 4 is connected with inner barrel 2 through riblet plate 6 on the central shaft of outer cylinder body 1, inner barrel 2, and its bottom is passed cylinder bottom plate 8 and is connected with self-con-tained unit, consists of the aggressive device of air funnel.Adjustment disk 7 is in outer cylinder body 1 inner lower, be sleeved on central rotating shaft 4 and with central rotating shaft 4 linkage a9; Open and close the top upside that adjustable petal switch 3 is installed in inner barrel 2 and be between outer cylinder body 1, the inner barrel 2, and with central rotating shaft 4 linkage b10; Linkage a9, linkage b10 consist of the linkage of air funnel.

The size of the air-out aperture on the air funnel outer cylinder body is certain, but the quantity of perforate changes, and according to the installation site of air funnel, can open 1/4,1/2,3/4 and whole apertures of cylindrical shell areas at the cylindrical shell of air funnel.

Claims

1. telescopic air funnel is characterized in that: telescopic air funnel by outer cylinder body (1), inner barrel (2), open and close adjustable petal switch (3), central rotating shaft (4), large floor (5), little floor (6), adjustment disk (7), cylinder bottom plate (8), linkage a(9) and linkage b(10) form.

2. telescopic air funnel according to claim 1, it is characterized in that: inner barrel (2) is the hollow cylinder of not perforate, is installed on the inner upper side of outer cylinder body (1).

3. telescopic air funnel according to claim 1, it is characterized in that: open and close the top upside that adjustable petal switch (3) is installed in inner barrel (2), and be between outer cylinder body (1) and the inner barrel (2), its petal when opening fully only has half-open position, have semi-closure, full cut-off two states when closure, its petal is being staggered of semi circular surface.