A kind of drying baker that is used to print
[technical field]
The utility model relates to a kind of drying baker, particularly a kind of drying baker that is used to print.
[background technology]
In the printing work process, in order to make the rapid draing of the lip-deep printing ink energy of printing coating materials, need drying plant that the printing coating materials of stencil is dried, generally be that drying baker is set.In the prior art, with reference to Fig. 1, existing printing mainly is made up of blast pipe 1 ', tuyere 2 ', roller 3 ', exhaust outlet 5 ', deflector 6 ', air inlet 8 ', air intake blower fan 9 ' and heat exchanger etc. with drying baker, the hot gas of air inlet 5 ' is sent to tuyere 2 ' through the guiding of baking oven deflector 6 ', blow to coating materials 4 ' printing surface 7 ' through tuyere 2 ' with the speed of big second about 25 meter per seconds, make the printing ink of printing surface 7 ' obtain drying, and be adsorbed on coating materials 4 ' surface.In drying course, this part makes the gas of the rapid ink drying on the printing coating materials contain the mist of printing ink solvent, be drawn to exhaust outlet through blast pipe, directly be discharged in the atmosphere through the trunk line exhaust blower again, thus the concentration of printing ink solvent in the reduction drying baker.In fact, concentration at the printing ink solvent of the mist of drying baker middle and upper part and bottom is different, the concentration of the printing ink solvent of the mist of drying baker middle and upper part is lower, direct mist with top is discharged into and goes to seem comparatively waste in the atmosphere, and this is the deficiency that existing printing is deposited with drying baker.
[utility model content]
The purpose of this utility model is the printing drying baker that discloses portion gas in a kind of reusable edible drying baker, energy savings and improve print quality.
The utility model is achieved in that a kind of printing drying baker, comprise the drying baker casing, air inlet, exhaust outlet, blast pipe, tuyere, deflector, heat exchanger and blower fan, it is characterized in that: also comprise return air duct, described exhaust outlet and blast pipe are made as exhaust outlet respectively, following exhaust outlet and last blast pipe, following blast pipe, described blast pipe one end of going up connects upward exhaust outlet, the other end connects an end of return air duct, the other end of described return air duct connects fan air inlet, return air duct is provided with air inlet, described blast pipe one end down connects exhaust outlet down, the other end connects atmosphere, be provided with deflector in the drying baker casing, described drying baker middle and upper part, middle part and bottom are equipped with tuyere.
The tuyere of described drying baker middle and upper part and bottom is the knife-edge tuyere, and the tuyere at middle part is the porous type tuyere.
The position of the air inlet on the described return air duct is near the blower fan position.
The beneficial effect that the utility model possesses is: the utility model in the course of the work, can oven dry casing middle and lower part printing ink solvent content is higher, mist blast pipe under following exhaust outlet warp that value is not high is pumped to the atmosphere, it is lower to dry simultaneously casing middle and upper part printing ink solvent content again, but the mist of recycling from last exhaust outlet through last blast pipe, return air duct back draws, and combine with the fresh air that enters from air inlet halfway, from coming back in the drying baker case through blower fan, fan air inlet recycles again, so circulation can make enterprise cut down the consumption of energy, save job costs, reduce the solvent residual amount of product simultaneously, help improving the quality of printed matter.
[description of drawings]
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of existing printing with drying baker;
Fig. 2 is a structural representation of the present utility model.
Wherein 1 ' blast pipe, 2 ' tuyere, 3 ' roller, 4 ' coating materials, 5 ' exhaust outlet, 6 ' deflector, 7 ' printing surface, 8 ' air inlet, 9 ' blower fan among the figure;
Blast pipe, 2, tuyere, 3. roller, 4. coating materials, 5. return air duct, 6. go up blast pipe, 7. descend blast pipe, 8. deflector, 9. blower fan, 10. exhaust outlet on heat exchanger, 11. air inlets, 12. printing surfaces, 13., 14. times exhaust outlets, 15. air inlets, 16. fan air inlets, 17. casings,
[specific embodiment]
From Fig. 2, can learn, the utility model is the drying baker that is used to print, mainly by drying baker casing 17, air inlet 11, exhaust outlet, blast pipe 1, tuyere 2, roller 3, deflector 8, heat exchanger 10, blower fan 9 is formed and return air duct 5, from oven dry casing 17, mist is discharged two exhaust outlets that have outside the case, be respectively exhaust outlet 13 and following exhaust outlet 14, and be provided with blast pipe 6 and following blast pipe 7 and two exhaust outlets 13,14 cooperate, last blast pipe 6 one ends connect goes up exhaust outlet 13, the other end connects an end of return air duct 5, the other end of return air duct 5 connects fan air inlet 16, the blower fan gas outlet connects heat exchanger 10, heat exchanger 10 is sent gas in the oven dry casing 17 through air inlet pipe and air inlet 11, and on return air duct 5, be provided with air inlet 15, the optimal setting positions of air inlet 15 can be located at as far as possible near on the position of blower fan 9, form the circulating line of a gas thus, mist that can oven dry casing 17 middle and upper part printing ink solvent content are lower is by the conveying that circulates of this circulating line.Following blast pipe 7 one ends connect exhaust outlet 14 down, the other end connects atmosphere, the higher mist of printing ink solvent content of oven dry casing 17 middle and lower parts can be discharged in the atmosphere, in drying baker casing 17, be provided with deflector 8, and be equipped with tuyere 2 in drying baker middle and upper part, middle part and bottom, the tuyere of oven dry casing 17 middle and upper parts and bottom is a knife-edge tuyere 2, and the tuyere 2 at middle part is a porous type tuyere 2.Compare with the structure of existing printing drying baker, the utility model can separately be discharged the mist that contains printing ink solvent, solvent strength mist high, that do not have the value utilized directly is discharged in the atmosphere, and the lower mist of printing ink solvent concentration content with still have value after fresh air mixes, can it is recycling, to reach energy-conservation joint consumption, reduce the solvent residual amount of product simultaneously, help improving the quality of printed matter.