Pebble coal sealing cover
Technical field
The present invention relates to a kind of pebble coal sealing cover, relate in particular to a kind of pebble coal and can carry out casing the seal closure of effective sealing in transportation, belong to seal closure technical field.
Background technology
The method of dolly loading transportation pebble coal is still the mode of domestic main conveying pebble coal now, in recent years, in order to reduce the pollution problem in pebble coal loading process, airborne dust problem when each equipment manufacturer releases sealed type device for discharging one after another with minimizing blanking.
What nowadays, the most conventional sealed type device for discharging adopted is upper and lower two parts split-type structural.Top is material storing box, the pebble coal falling in order to temporarily to deposit coal mill; Bottom is charging carriage, in order to load pebble coal and to be transported to emptying point.The feed hole edges that presses bottom charging carriage by the pressure apparatus at material storing box blanking port place, top downwards realizes sealing loading, provide downward pressure by Pneumatic extension pressure mechanism, this pressure apparatus cost is larger, the face contact face of upper lower device is hard material, both sides, in the time of extruding laminating, a little less than retractility, are prone to gap, the leak tightness of reduction equipment, cannot reach airtight laminating completely.In addition, because having adopted the pressure mechanism of Pneumatic extension, make with high costs; And, when pressure apparatus lifts and moves tank car for bottom and shift out, there will be a large amount of airborne dusts.Therefore, existing sealed type device for discharging still exists poorly sealed close, many problems of airborne dust while having loaded depressurization.
Summary of the invention
The object of the invention is to: a kind of pebble coal sealing cover is provided, solving existing sealed type device for discharging adopts split-type structural to exist poorly sealed close, the many technical matterss of airborne dust when loading completes depressurization, thus can solve above-mentioned problems of the prior art by actv..
The object of the invention is to realize by following technical proposals: a kind of pebble coal sealing cover, comprise the sealing cover body corresponding with seal case, the inside face of sealing cover body is installed a circle gas-flow closure circle, the upper surface of sealing cover body is provided with air filling and exhausting hole and exhaust grid, and the upper surface middle part of sealing cover body is provided with to connect the flange of outside material storing box.
As optimal way, described sealing cover body is provided with observation window.
As further preferred embodiment, described gas-flow closure circle is threaded with sealing cover body by clamping plate are installed.
As optimal way, described sealing cover body is mainly welded with the big or small corresponding side panel of surface plate by a surface plate corresponding with seal case size and four.
As optimal way, described flange is square flange or circular flange.
As optimal way: also comprise exhaust grid, described exhaust grid are the vesicular that high-density and high-temperature-resistant stainless steel cloth is made.
Compared with prior art, beneficial effect of the present invention: the inner gas-flow closure circle of installing of cover body of pebble coal sealing cover of the present invention, tightness is high, and terminal with compact integral structure, light and handy is installed simply, simple operation, investment and operating maintenance are little; Airborne dust problem while solving existing apparatus sealing releasing.
Accompanying drawing explanation
Fig. 1 is the overlooking surface structural representation of pebble coal sealing cover of the present invention;
Fig. 2 is the A-A generalized section in Fig. 1 of the present invention;
Fig. 3 is the construction profile schematic diagram of pebble coal sealing cover of the present invention;
Fig. 4 is gas-flow closure circle air filling and exhausting hole of the present invention place section structure schematic diagram.
In figure: 1-seals cover body, 2-air filling and exhausting hole, 3-exhaust grid, 4-flange, 5-gas-flow closure circle, 6-observation window, 11-surface plate, 12-side panel.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Disclosed all features in this specification sheets, or step in disclosed all methods or process, except the speciality and/or step of mutual repulsion, all can combine by any way, unless narration especially, all can be replaced by other equivalences or the alternative features with similar object,, unless narration especially, an embodiment in a series of equivalences of each feature or similar characteristics.
As Figure 1-4, pebble coal sealing cover of the present invention comprises the sealing cover body 1 corresponding with seal case, and described sealing cover body 1 is mainly welded by a surface plate 12 and four side panels 11 corresponding with surface plate 12 sizes.The inside face of sealing cover body 1 is installed a circle gas-flow closure circle 5, four car edges of pressing dolly in order to inflation.Can expand by inflating in gas-flow closure circle 5 bottoms, thus make seal closure can with casing close contact.Described gas-flow closure circle 5 is threaded with sealing cover body 1 by clamping plate are installed; Gas-flow closure circle after inflation to the edge of lower extruding pebble coal dolly, thereby load by pressing to realize sealing.Specifically, in the present embodiment, adopt the aerated rubber loop of soft materials, it has retractility and plasticity, can change according to the shape of the object contacting with it the shape of self, to reach complete airtight effect, with existing sealing arrangement need to adopt Pneumatic extension pressure mechanism can realize sealing compared with, the present invention adopts the gas-flow closure circle can be cost-saving, reduces manpower, and has better sealing effectiveness.The upper surface of sealing cover body 1 is provided with air filling and exhausting hole 2 and exhaust grid 3, the vesicular that described exhaust grid 3 are made for high-density and high-temperature-resistant stainless steel cloth.Exhaust grid make after discharging completes, and after the venting of gas-flow closure circle, can not produce a large amount of airborne dusts, the exhaust while realizing pebble coal blanking and obstruct pebble, coal ash.Exhaust grid are in order to solve the airborne dust problem after sealing is removed.The upper surface middle part of sealing cover body 1 is provided with to connect the flange 4 of outside material storing box; Cover body upper flange is in order to connect top material storing box, and flange shape can be adjusted as the case may be, and described flange 4 can be square flange or circular flange.Described sealing cover body 1 is provided with observation window 6.
Working process of the present invention is as follows:
Under normal circumstances, when charging carriage inserts cover body, no touch between dolly upper edge and seal ring, when after seal ring inflation, seal ring extruding dolly edge, realizes sealing.
The soft contact formula that the present invention adopts gas-flow closure circle to expand and pushes seals, and can increase better sealing tightness, and setting up of exhaust grid can solve the airborne dust problem sealing after removing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.