A kind of dryer
Technical field
The present invention relates to a kind of dryer, relate in particular to a kind of air-dry agricultural product initially processing machines of fruit and vegetable surface dewatering such as oranges and tangerines, orange, apple, potato that are mainly used in.
Background technology
What the dryer in fruit and vegetable cleaning waxing equipment used all adopted in the market is direct-firing hot blast one-time heating air drying system, the heat which produces heat-exchanger surface blasts dry channel incessantly, then by passage tail end, is directly discharged.This kind of mode temperature rises slowly, and temperature retention time is short, and has wasted heat greatly, has increased production cost, waste resource.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of heat can being recycled, and capable of saving fuel oil or power consumption reduce production costs and can reach the heat drying dryer of better practical function.
The object of the present invention is achieved like this:
A kind of dryer, it comprises frame, frame is integral frame-type, in frame, be provided with conveying cylinder, on conveying cylinder, be connected with driving motor, conveying cylinder is also provided with conveying cylinder clearing apparatus, dry channel is formed at conveying cylinder top, dry channel top is provided with fan housing, and conveying cylinder has heat exchanger, and heat exchanger front end is provided with mends wind three-way pipe, heat exchanger rear end is provided with connection airduct, connect airduct rear end and be provided with centrifugal blower, centrifugal blower connects air intake airduct, and air intake airduct is communicated with dry channel.
Above-mentioned heat exchanger is oil fuel combustion heat exchanger, and heat exchanger is provided with oil burner and chimney.
On above-mentioned dry channel, be also communicated with auxiliary air drying system.
The present invention has obtained following technique effect:
1, the area of dissipation of heat exchanger and cycle-index increase, and fuel oil energy is burnt fully;
What 2, air blast adopted is snail type centrifugal blower, and than axial-flow type straight tube blower fan, under same power, the air quantity of centrifugal blower, blast are larger, thereby make the wind speed in dry channel faster;
3, upper fan housing and airduct are the double-decker containing insulation material, can reduce to greatest extent the loss of heat, thereby make dry channel can reach the effect of " quick heating, cooling is slow ";
4, the structure of threeway secondary air channel can allow user according to the needs of weather, regulates freely air quantity;
5, the whole atmosphere of fuselage is attractive in appearance, has reduced user's space hold rate, and third dimension is stronger;
6, by auxiliary air drying system is set, in cold weather situation, carry out boosting and accelerate wind speed, further improve this novel drying effect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention is at the sectional drawing at heat exchanger place.
The specific embodiment
As Fig. 1-2, a kind of dryer, it comprises frame 1, frame is integral frame-type, in frame, be provided with conveying cylinder 2, on conveying cylinder, be connected with driving motor 3, conveying cylinder is also provided with conveying cylinder clearing apparatus 4, and dry channel 13 is formed at conveying cylinder top, and dry channel top is provided with fan housing 10, conveying cylinder has heat exchanger 6, heat exchanger front end is provided with mends wind three-way pipe 5, and heat exchanger rear end is provided with and connects airduct 7, connects airduct rear end and is provided with centrifugal blower 8, centrifugal blower connects air intake airduct 11, and air intake airduct is communicated with dry channel.
Preferentially, described heat exchanger is oil fuel combustion heat exchanger, and heat exchanger is provided with oil burner 14 and chimney 12.On described dry channel, be also communicated with auxiliary air drying system 9.
Core technology of the present invention is exactly to change direct-firing heating air drying system in the past into tunnel type circulating heating system.This machine primary structure is comprised of following components: frame, adopt integral frame-type structure, and make its transmission system, groundwork system etc. all within frame, make its safer convenience in transportation, use procedure; Driving motor, the mode of employing electrodeless variable-speed, user can regulate arbitrarily according to the needs of output; Conveying cylinder, adopts aluminium alloy bellows, its indeformable under high temperature, non-corrosive, and external waviness formula structure can reduce and fruit between contact area; Cylinder clearing apparatus, is used for cleaning the residue on conveying cylinder surface; Mend wind three-way pipe, regulate the size of intake volume; Heat exchanger, for system provides the thermal source of clean hot blast, is the core apparatus of system, is divided into two kinds of fuel oil type and electrothermals; Connect airduct, hot blast is sent to centrifugal blower; Centrifugal blower, is sent to hot blast on the power set of dry channel; Auxiliary air drying system carries out the device that boosting is accelerated wind speed in cold weather situation; Upper fan housing, the stay-warm case of dry channel; Air intake airduct, is sent to dry channel by hot blast by centrifugal blower; Chimney, when heat exchanger is fuel oil type, the useless cigarette discharger that oil burner is produced; Dry channel, the main positions that material dewatering is dry; Oil burner, for heat exchanger provides origin of heat.
The working method of tunnel type circulating heating system is as follows: first start centrifugal blower cool ambient air and enter wherein by the control valve of mending in wind three-way pipe, then by heat exchanger, cold air is heated to suitable temperature, by connecting airduct, be sent to centrifugal blower again, centrifugal blower is delivered to dry channel by (11) air intake airduct by hot blast, by accessory fan, through boosting, a part of hot blast is accelerated to continue to serve as again in the middle of the passage dry, another part hot blast enters its lower end and mends and get back to heat exchanger after wind three-way pipe and recycle.(if heat exchanger is fuel oil type, and the useless cigarette that oil burner produces is discharged by chimney).
By the required tram of equipment, check that whether each parts are complete, connect power supply.First start driving motor, after transmission system runs well, start centrifugal blower, finally open burner.