CN2704705Y

CN2704705Y - Automatic switching apparatus of total wind pressure and local ventilator

Info

Publication number: CN2704705Y
Application number: CN 200420010605
Authority: CN
Inventors: 刘新中; 王永信; 辛新平; 魏国营
Original assignee: 刘新中
Priority date: 2004-04-12
Filing date: 2004-04-12
Publication date: 2005-06-15
Anticipated expiration: 2014-04-12

Abstract

The utility model discloses an automatic switching apparatus of total wind pressure and a local ventilator, comprising a main air cylinder, a branch air cylinder, a switching plate and a sealplate; wherein, the branch air cylinder is fixedly connected to the upper part of the main air cylinder and is mutually communicated, the two ends of the main air cylinder are provided respectively with an air inlet and an air outlet, the upper part of the branch air cylinder is provided with an adjusting air opening, a ring-shaped sealplate is fixedly connected inside the branch air cylinder, a rotary shaft is arranged on the lower part of the sealplate adjacent to the air inlet, and the switching plate connected to the rotary shaft through hinges can rotate around the rotary shaft and can cage the ring-shaped sealplate when rotating onto the upper part so that the temporary ventilation effect is available with the power off, and furthermore the quick great accumulation of firedamp from the face of digging is prevented, ensuring safe production, which has the advantages of convient installation and use and helpness to safe production, etc.

Description

Whole wind pressure ventilation and booster automatic switchover device

Technical field:

The utility model belongs to aeration technology field under the coal mine.

Background technique:

When highly gassy mine coal road driving face is worked, need be by booster and air conducting tube, full blast in the big lane is pressed the fresh distinguished and admirable driving face that is transported to, big lane and driving face are separated by air door, the gas that working surface is gushed out flow into the return air eye and discharges through return airway after fresh distinguished and admirable dilution.For ensureing ventilation safety, booster adopts two blower fan double-power sourcies, i.e. another typhoon machine automatic switchover work when a blower fan breaks down, another road power supply automatic switchover work when one road power supply breaks down, but, cause blower fan stall blowing-out because the on-the-spot rugged environment in down-hole also might cause the ventilator double-power source to have a power failure simultaneously, thereby cause driving face gas to build up in a large number at short notice, mine safety production and staff are caused a significant threat.

The model utility content:

The purpose of this utility model provides a kind of when local ventilator double-power source breaks down simultaneously, can make full blast press distinguished and admirable whole wind pressure ventilation and the booster automatic switchover device that imports to driving face automatically.

To achieve these goals, the utility model comprises: main wind tube, an air duct, switch boards, sealing plate, air duct is fixedly connected on the top of main wind tube and is interconnected, the main wind tube two ends are respectively intake grill and exhaust outlet, propping up air duct top is to regulate the air port, be provided with a garden annular seal plate in an air duct internal fixation connection, sealing plate bottom and be provided with a rotatingshaft near intake grill one side, switch boards is connected on the rotatingshaft by hinge and can rotates around rotatingshaft, the garden annular seal plate can be covered when switch boards turns to top.

Like this, the utility model can be installed between booster and the air door at work, when proper functioning is ventilated, because the air blast effect of intake grill blast, switch boards is pushed to the sealing plate that will prop up in the air duct on top and covers, the adjusting air port is closed, and freshly distinguished and admirablely flow into driving face by intake grill through exhaust outlet, air conducting tube; When double-power source broke down the ventilator stall simultaneously, switch boards was fallen by deadweight effect meeting automatically, regulated the air port and opened automatically.Because the driving face in the air door is communicated with return airway, air pressure is relatively low; In the big lane outside the air door is that total head is fresh distinguished and admirable, air pressure is higher relatively, influenced by air door inner air and outer air certain pressure difference, fresh distinguished and admirable will slowly being entered through exhaust outlet, air conducting tube by damper flow into driving face, play temporary transient draught effect, prevented a large amount of accumulations of driving face gas short time, ensured safety in production, striven for certain hour for maintenance, have easy to install, help characteristics such as safety in production.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is plan structure figure of the present utility model.

Embodiment:

As seen from Figure 1, Figure 2, the utility model comprises: comprising: main wind tube 2, an air duct 3, switch boards 5, sealing plate 7, air duct 3 is fixedly connected on the top of main wind tube 2 and is interconnected, main wind tube 2 two ends are respectively intake grill 9 and exhaust outlet 1, the top of air duct 3 is to regulate air port 4, and a main wind tube and an air duct all adopt steel plate to roll to form and be integrally welded.In an air duct 3 and around its inwall, fixedly connectedly be provided with a garden annular seal plate 7, one side of the bottom of sealing plate 7 and close intake grill 9 has fixedly installed a rotatingshaft 8, switch boards 5 is connected on the rotatingshaft 8 by hinge 6, switch boards 5 can be rotated around rotatingshaft 8, garden annular seal plate 7 can be covered when switch boards 5 turns to the upper level position, switch boards can adopt wooden or plastic material is made, and it is blown afloat by distinguished and admirable easily.In order to guarantee that switch boards 5 covers garden annular seal plate 7 and seal reliably, switch boards is provided with a garden annular protrusion, on sealing plate, have a garden annular groove, make that the garden annular protrusion entered in the annular groove of garden when switch boards 5 turned to the upper level position, avoid causing and leak out.The big I of specification of the present utility model is made series product according to the specification size of booster.

Claims

1, whole wind pressure ventilation and booster automatic switchover device, comprise: main wind tube (2), prop up air duct (3), switch boards (5), sealing plate (7), air duct (3) is fixedly connected on the top of main wind tube (2) and is interconnected, main wind tube (2) two ends are respectively intake grill (9) and exhaust outlet (1), propping up air duct (3) top is to regulate air port (4), it is characterized in that being provided with a garden annular seal plate (7) in air duct (a 3) internal fixation connection, sealing plate bottom and be provided with a rotatingshaft (8) near intake grill (9) one sides, switch boards (5) is connected on the rotatingshaft (8) by hinge (6) and can rotates around rotatingshaft, and switch boards (5) can cover garden annular seal plate (7) when turning to top.