A kind of fruit and vegetable drying machineTechnical field
The present invention relates to a kind of fruit and vegetable drying machine.
Background technology
Fruit and vegetable drying technology, for deep processing of farm products, improves added value significant.The general chamber typed drying-machine of using, after product to be dried being put into pallet, closes chamber door at present, dries, and this kind prevents that the product drying of smoking is out inhomogeneous, easily occurs overdrying or excessively wet phenomenon.And existing fruit and vegetable drying machine comprises the air-supply thermal treatment zone and fruit and vegetable drying district, by sending into fruit and vegetable drying district after the air heat under normal temperature, fruits and vegetables is dried again, and the hot blast after oven dry is directly discharged, do not recycle, cause the waste of the energy.
Summary of the invention
It is even that the technical problem to be solved in the present invention is to provide a kind of product humidity of smoking, and can make full use of the fruit and vegetable drying machine of the energy.
For solving the problems of the technologies described above, the present invention includes and dry casing and pressure fan, it is characterized in that described oven dry casing is packed on support, dry in casing and be provided with along its length the chain by motor and chain wheel drive, described chain is two, article two, before and after chain, be symmetrical arranged and be synchronized with the movement, thereby two between the inner side of chain successively evenly interval many support bars are set two chains are connected, on support bar, be fixed with screen cloth, described oven dry casing is respectively equipped with entrance and exit in the both sides of its length direction, the entrance and exit of drying casing is stretched out respectively at the two ends, left and right of described chain, thereby in described oven dry casing, be interval with successively from left to right demarcation strip the inner chamber of drying casing is divided into the first baking zone, the second baking zone and the 3rd baking zone, described oven dry casing respectively corresponding each baking zone is provided with the hot-blast outlet of rectangle, each hot-blast outlet place is connected with wind-collecting cover, each wind-collecting cover respectively with the first discharge pipe, the second discharge pipe is connected with the 3rd discharge pipe, the air outlet of described pressure fan is connected with total ajutage, the end of described total ajutage is divided into the first ajutage, the second ajutage and three branched pipes of the 3rd ajutage, the outlet air end of described the first ajutage stretches into the first baking zone, the outlet air end of described the second ajutage stretches into the second baking zone, the outlet air end of described the 3rd ajutage stretches into the 3rd baking zone, and the outlet air end of described each ajutage is provided with tuyere, the air inlet of described pressure fan is connected with blast pipe, described blast pipe by its air intake to being provided with successively for the First Heat Exchanger to air heat in blast pipe with pressure fan link, the second heat exchanger and heater, described the first discharge pipe is connected with the thermal source entrance of First Heat Exchanger, the bottom in described First Heat Exchanger thermal source chamber is provided with condensation-water drain, the end of described the first discharge pipe is connected with the suction inlet of exhaust blower, described the second discharge pipe is connected with the thermal source entrance of the second heat exchanger, the bottom in described the second heat exchanger thermal source chamber is provided with condensation-water drain, described the second discharge pipe is connected with the suction inlet of exhaust blower, on described the 3rd discharge pipe, dehumidifier is installed, the end of described the 3rd discharge pipe is connected on the pipeline section between the second heat exchanger and the heater of blast pipe, the condensation-water drain of described First Heat Exchanger and the second heat exchanger is communicated with drainpipe by branched pipe respectively, and described drainpipe is wrapped on the pipeline section between blast pipe air intake and First Heat Exchanger, and is coated with heat-insulation layer at the outer surface of drainpipe, before and after described oven dry casing, corresponding two chains of the inner surface of tank wall are respectively equipped with the baffle plate adapting with chain length, thereby described baffle plate tilts chain is blocked from top to bottom to the inside, and the distance between its bottom and screen cloth is less than the thickness of product to be dried.
The air intake of described blast pipe is provided with air cleaner.
Described oven dry casing is provided with hydrofuge shutter on the tank wall of the first baking zone.
The outlet air end of described the first ajutage and the second ajutage is all arranged on the below of the screen cloth that transports product to be dried, tuyere just arranges the bottom of product to be dried upward, and the hot-blast outlet of described the first baking zone and the second baking zone is arranged on the top of drying casing.
The outlet air end of described the 3rd ajutage is arranged on the top of the screen cloth that transports product to be dried, and tuyere just arranges the top of product to be dried down, and the hot-blast outlet of described the 3rd baking zone is arranged on the bottom of drying casing.
The outlet air end of described each ajutage is equipped with multiple tuyeres, and described tuyere is the flat tuyere of being made up of stainless steel material.
In described the first ajutage, the second ajutage, the 3rd ajutage, the first discharge pipe, the second discharge pipe and the 3rd discharge pipe, be separately installed with louvered air damper.
In described the first baking zone, the second baking zone and the 3rd baking zone, be respectively equipped with temperature sensor and humidity sensor, described each temperature sensor and humidity sensor are electrically connected with display respectively.
Described oven dry casing is provided with bucket elevator at its corresponding screen cloth in left side, and on its right side, corresponding screen cloth is provided with belt conveyor.
The outer surface of described oven dry casing is provided with insulating.
Adopt after said structure, with the even feeding of elevator to screen cloth, thereby motor drive sprocket rotates and makes chain movement, and then drive screen cloth to move from left to right, product to be dried on screen cloth is dried through the first baking zone, the second baking zone and the 3rd successively, the product of having dried is fallen belt conveyor from the right-hand member of chain, realizes the transfer of product.In the present invention, three baking zones are separated by demarcation strip, and the air passing into respectively after heating is dried product, air is extracted out from discharge pipe respectively after product is heated, wind in the first discharge pipe in exhaust blower is drawn into First Heat Exchanger to fresh air preheating, wind in the second discharge pipe again heats air in exhaust blower is drawn into the second heat exchanger, the condensed water of First Heat Exchanger and the second heat exchanger is discharged after to fresh air preheating again, in the 3rd discharge pipe, the temperature of wind is higher, after dehumidifier dehumidifying, directly enter blast pipe and again participate in circulation, after gas heater via heating after collecting, being delivered to each baking zone by pressure fan dries product.The dryer of this kind of structure, automaticity is high, and makes full use of the energy, reduces the consumption of the energy, reduces production costs, and improves the competitiveness of company.
Brief description of the drawings
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that Fig. 1 analyses and observe along A-A line.
Detailed description of the invention
As depicted in figs. 1 and 2, fruit and vegetable drying machine comprises pressure fan 5 and rectangular oven dry casing 2, drying casing 2 is packed on support 1, in oven dry casing 2, (being left and right directions) is provided with the chain 26 being driven by motor and sprocket wheel 25 along its length, in the present invention, chain 26 is two, article two, chain 26 front and back are symmetrical arranged and are synchronized with the movement, and chain 26, sprocket wheel 25 are prior art with the type of drive that is connected of motor, do not repeat them here.Thereby two between the inner side of chain 26 successively evenly interval many support bars 29 are set two chains 26 are connected, on support bar 29, be fixed with screen cloth 27, screen cloth 27 is flexible steel wire, the heat resistance of steel wire is better, long service life and easily scrubbing.Dry casing 2 and be respectively equipped with entrance 11 and outlet 12 in the both sides of its length direction, entrance 11 and the outlet 12 of drying casing 2 are stretched out respectively in the two ends, left and right of chain 26, dry casing 2 and be provided with bucket elevator 3 at its corresponding screen cloth 27 in left side, on its right side, corresponding screen cloth 27 is provided with belt conveyor 4.The feed hopper 31 of bucket elevator 3 is concordant with ground, facilitates charging.Bucket elevator 3 and belt conveyor 4 all can adopt the existing product that can buy on the market, and it is prior art, do not repeat them here its concrete structure and using method.
Thereby in oven dry casing 2, be interval with successively from left to right demarcation strip 24 inner chamber of drying casing 2 is divided into the first baking zone 21, the second baking zone 22 and the 3rd baking zone 23, the large I of each baking zone is determined according to the easy oven dry degree of concrete product to be dried, if product to be dried is difficult for drying, the length of the first baking zone 21 and the 3rd baking zone 23 can suitably strengthen.Dry casing 2 hydrofuge shutter is installed on the tank wall of the first baking zone 21, can accelerate the dehumidifying speed of the first baking zone 21 interior products to be dried.Dry casing 2 respectively corresponding each baking zone be provided with the hot-blast outlet of rectangle, each hot-blast outlet place is connected with wind-collecting cover 28, each wind-collecting cover 28 is connected with the first discharge pipe 55, the second discharge pipe 56 and the 3rd discharge pipe 57 respectively.The air outlet of pressure fan 5 is connected with total ajutage 51, the end of total ajutage 51 is divided into the first ajutage 52, the second ajutage 53 and 54 3 branched pipes of the 3rd ajutage, the outlet air end of the first ajutage 52 stretches into the first baking zone 21 through tank wall, the outlet air end of the second ajutage 53 stretches into the second baking zone 22 through tank wall, the outlet air end of the 3rd ajutage 54 stretches into the 3rd baking zone 23 through tank wall, the outlet air end of each ajutage is provided with multiple tuyeres 8, tuyere is the flat tuyere of being made up of stainless steel material, this kind of tuyere blowing better effects if.The outlet air end of the first ajutage 52 and the second ajutage 53 is all arranged on the below of the screen cloth 27 that transports product to be dried, tuyere 8 just arranges the bottom of product to be dried upward, and the hot-blast outlet of the first baking zone 21 and the second baking zone 22 is arranged on the top of drying casing 2.The outlet air end of the 3rd ajutage 54 is arranged on the top of the screen cloth 27 that transports product to be dried, and tuyere 8 just arranges the top of product to be dried down, and the hot-blast outlet of the 3rd baking zone 23 is arranged on the bottom of drying casing 2.The outlet air end of each ajutage can be according to the uniform multiple tuyeres 8 of the size of baking zone, thereby improve the uniformity that baking zone is dried.The setting of each baking zone ajutage of this kind is particularly suitable for the heavier product to be dried of weight, the first ajutage 52 and the second ajutage 53 are arranged on the below of screen cloth 27, hot blast moves upward through screen cloth 27, fully contact with product to be dried and product to be dried is heated, and wind direction blowing up can make product to be dried under the buoyancy of wind, have motion upwards, gap between product to be dried is increased, thereby increase the contact area of each product to be dried and wind, improve heat exchange efficiency.The tuyere 8 of the 3rd ajutage 54 just arranges the top of product to be dried down, can prevent that the product to be dried lightening from waving under the effect of wind-force everywhere, and impact is normally dry.
The air inlet of pressure fan 5 is connected with blast pipe 6, and the air intake of blast pipe 6 is provided with air cleaner 61, and air cleaner 61 effectively filters air intake, prevents airborne Particulate Pollution product to be dried.Blast pipe 6 by its air intake to being provided with successively for the First Heat Exchanger 62 to blast pipe 6 interior air heat with pressure fan 5 links, the second heat exchanger 65 and heater 63, the first discharge pipe 55 is connected with the thermal source entrance 11 of First Heat Exchanger 62, the end of the first discharge pipe 55 is connected with the suction inlet 11 of exhaust blower 64, the bottom in First Heat Exchanger 62 thermal source chambeies is provided with condensation-water drain 12, the second discharge pipe 56 is connected with the thermal source entrance of the second heat exchanger 65, the bottom in the second heat exchanger 65 thermal source chambeies is provided with condensation-water drain, the second discharge pipe 65 is connected with the suction inlet of exhaust blower 64, the first discharge pipe 55 and the second discharge pipe 56 share an exhaust blower, on the 3rd discharge pipe 57, dehumidifier 9 is installed, the end of the 3rd discharge pipe 57 is connected on the pipeline section between the second heat exchanger 65 and the heater of blast pipe 6.The condensation-water drain of First Heat Exchanger 62 and the second heat exchanger 65 is communicated with drainpipe 67 by branched pipe respectively, drainpipe 67 is wrapped on the pipeline section between blast pipe air cleaner 61 and First Heat Exchanger 62, and is coated with heat-insulation layer 66 at the outer surface of drainpipe 67; In the first ajutage 52, the second ajutage 53, the 3rd ajutage 54, the first discharge pipe 55, the second discharge pipe 56 and the 3rd discharge pipe 57, be separately installed with louvered air damper 58, operating personnel can be according to the situation of drying, the intake of each baking zone of timely adjustment and air output, and intake velocity and air-out speed, thereby reach best drying effect.
Corresponding two chains 26 of inner surface of drying casing 2 front and back tank walls are respectively equipped with the baffle plate 7 adapting with chain 26 length, thereby baffle plate 7 tilts chain 26 is blocked from top to bottom to the inside, and the distance between its bottom and screen cloth 27 is less than the thickness of product to be dried.Baffle plate 7 can effectively prevent that product to be dried from falling on chain 26, affects the motion of chain 26.
In the first baking zone 21, the second baking zone 22 and the 3rd baking zone 23, be respectively equipped with temperature sensor and humidity sensor, each temperature sensor and humidity sensor are electrically connected with display respectively, operating personnel can understand the oven dry situation of each baking zone in real time, thereby the flow to hot blast and heater 63 regulate and control, improve the oven dry uniformity of product to be dried, and can prevent that product to be dried from crossing wet or overdrying.
The outer surface of drying casing 2 is provided with insulating, prevents heat loss, both capable of reducing energy consumption, also can prevent that heat radiation from making workplace excess Temperature, for staff provides comfortable workplace.
When use, with the even feeding of elevator to screen cloth 27, thereby motor drive sprocket 25 rotates chain 26 is moved, and then drive screen cloth 27 to move from left to right, product to be dried on screen cloth 27 is dried through the first baking zone 21, the second baking zone 22 and the 3rd successively, the product of having dried is fallen belt conveyor 4 from the right-hand member of chain 26, realizes the transfer of product.In the present invention, three baking zones are separated by demarcation strip 24, and the air passing into respectively after heating is dried product, air is extracted out from discharge pipe respectively after product is heated, it is interior to fresh air preheating that wind in the first discharge pipe 55 is drawn into First Heat Exchanger 62 through exhaust blower 64, wind in the second discharge pipe 56 is drawn into second heat exchanger 65 is interior through exhaust blower 64 air is heated again, the condensed water of First Heat Exchanger 62 and the second heat exchanger 65 is discharged after to fresh air preheating again, the temperature of the 3rd discharge pipe 57 interior wind is higher, after dehumidifier 9 dehumidifying, directly enter blast pipe 6 and again participate in circulation, after gas heater via 63 heating after collecting, being delivered to each baking zone by pressure fan 5 dries product.The dryer of this kind of structure, automaticity is high, and makes full use of the energy, reduces the consumption of the energy, reduces production costs, and improves the competitiveness of company.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention.Previous embodiment has been described in detail the present invention, and for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.In every case within inventive concept scope of the present invention, any amendment of making, be equal to replacement, improvement etc., within being all included in protection scope of the present invention.