Swelling cabo online equipment and use the offal processing method of this equipment
Technical field
The present invention relates to a kind of swelling cabo online equipment, relate in particular to a kind of equipment saturated or that superheated steam carries out the cabo expansion processing that uses.
The invention still further relates to and a kind ofly use above-mentioned swelling cabo online equipment to carry out the method for offal chopping pre-treatment.
Background technology
For tobacco manufacturing enterprise, improve the preceding treatment effect of offal chopping, comprising making offal that even, suitable chopping humidity be arranged so that the offal chopping, and make offal enough dilations be arranged to improve the tobacco product filling rate, is the important channel that enterprise reduces production costs.Simultaneously, obtaining the offal silk of high dilation, also is a main path making the safe tobacco product of low tar content.
Usually, tobacco enterprise often adopts and under heated condition offal is soaked in order to reach above purpose, carries out the offal chopping then, carries out the stem expansion process by the stem flashing apparatus again.This offal processing method, the broken rate height, the offal utilization rate is not high.
Chinese patent application 200510118934.6 discloses a kind of ESS (ExpandedShredded Stem) process of granular expanded cabo and equipment that is adopted thereof of preparing.This expanded cabo equipment comprises two superheated steam processing sections, and wherein first processing section is connected with the offal feed arrangement, and is provided with the steam injection device; Be provided with superheated steam and the offal valve that enter second processing section of control in first processing section between first processing section and second processing section; The second processing section inside is provided with the spiral conveyer that transports offal.This device processes section need be born the superheated steam of 200 degrees centigrade of minimum pressure 10bar, temperature.Its first processing section is preferably vertical setting, and second processing section is horizontally disposed with.Simultaneously, in order to obtain the expansion process effect of offal by quick step-down, this equipment needs to install orifice nozzle (orifice) on the outlet of second processing section.
Chinese patent application 200510118934.6 disclosed the said equipments can obtain preferably the cabo expansion effect and carry out the processing of big flow.But still there are following two defectives in this technical scheme: the one, in order to obtain the requirement of needed expansion pressurized treatments, its equipment adopts two-part to handle, between its first processing section and second processing section, steam valve is set, the emptying regularly of its first superheated steam section, therefore the handling process of its offal is a discontinuity, keep the continuity handled, enterprise must purchase the same equipment more than two; The regular emptying of the first superheated steam section also causes a large amount of wastes of steam energy; The 2nd, its equipment adopts a kind of orifice nozzle that is arranged on the second superheated steam section outlet, realize the rapid depressurization of offal vapour mixture and obtain the cabo expansion effect, therefore, this equipment can only be handled the following short stalk of 30mm usually, otherwise as easy as rolling off a logly stop up at said nozzle aperture place, this makes it must carry out cabo sifting before corresponding expansion process, to grow stalk and carry out cutting again, so when this equipment of use carries out the offal expanding treatment, its corresponding preorder handling procedure more complicated.
Summary of the invention
Technical problem to be solved by this invention provides a kind of swelling cabo online equipment that can carry out online expansion process continuously.
For solving above technical problem, swelling cabo online equipment of the present invention comprises feeding warehouse, goes out feed bin and steam under pressure treating apparatus; This steam under pressure treating apparatus is the pressurized treatments storehouse; Inside, pressurized treatments storehouse is provided with helix transporting device; The pressurized treatments storehouse is provided with steam and sprays into nozzle; In steam under pressure treating apparatus porch and exit the steam gas lock is set respectively; Porch steam gas lock is connected with feeding warehouse, exit steam gas lock with go out feed bin and be connected; Described pressurized treatments storehouse is at least two sections, and preposition pressurized treatments storehouse afterbody below outlet is connected with placing pressurized treatments storehouse above-head inlet thereafter; Described pressurized treatments storehouse can be born the steam pressure of 8 crust at least.
The present invention adopts the steam gas lock at the import and export of steam under pressure treating apparatus, can realize substantially that the operating air pressure in the pressurized treatments warehouse is stable, and need not to need steam in the emptying process storehouse because of charging, realize the processing of tobacco stalk raw material on-line continuous, when improving treatment effeciency, also saved steam energy.Simultaneously, described pressurized treatments storehouse is set to more than two sections or two sections, preposition pressurized treatments storehouse afterbody below outlet is connected with placing pressurized treatments storehouse above-head inlet thereafter, form serial connection, the offal treatment effect that this can make the bigger offal flow of device processes and realize more optimizing, avoid the equipment processing that may occur simultaneously and difficulty is installed because of the pressurized treatments storehouse is long
The present invention is when adopting above-mentioned segmented steam under pressure treating apparatus, omitted the by-pass valve control between two processing sections, therefore can be when obtaining the better treatment effect of larger process flow, still keep tobacco stalk raw material is carried out continuous expansion process, improved the swelling cabo online treatment effeciency extremely significantly.
In addition, the present invention can adopt the pressurized treatments storehouse afterbody modes of emplacement that is inclined upwardly, and reason tobacco stalk raw material of living in is rolled naturally backward because of the gravity effect in transmission course, can strengthen the uninterrupted circular treatment effect of tobacco stalk raw material.
In addition, the cross section in pressurized treatments storehouse can also be set to similar oval-shaped oblateness.Space more than needed appears in the flank face that can make helix transporting device that is provided with like this, and the part tobacco stalk raw material is fallen after rise in transmission course, to realize that raw material further stirs, also can effectively prevent that raw material from stopping up simultaneously.
For further reducing steam under pressure treating apparatus import and export steam leakage, can adopt elastic packing steam gas lock.The rotary blade top of this gas lock is equiped with the seal that can radially finely tune; Described seal comprises rigid plate and is arranged on spring or other flexible member of its bottom; Spring or other flexible member are installed in the rotary blade top slit of steam gas lock, and prop up the bottom of stretching into the sealing plate in the slit; The bottom of sealing plate is by the pressing plate clamping that is fixed on the rotary blade top; Sealing plate contacts with steam gas lock inner walls under the regulating action of spring or other flexible member.In use, the rotating vane top end sealing gasket or sealing plate contact with steam gas lock inner walls, and can be because of the gap does not appear in the temperature difference, to realize the gas lock sealing effectively, reduce steam leakage.Employing by rigid plate and be arranged on the spring of its bottom or the drop bar formed of other flexible member as seal; can further avoid the easy to wear and problem of easy loss of seal effect of elastic sealing gasket, reduce because of changing the shutdown maintenance number of times that seal must carry out.
In order to make steam under pressure treating apparatus of the present invention bear more than the 8bar the more superheated steam of high pressure values, can adopt the graphite shaft sealing device of high temperature high voltage resistant to seal to the swivel joint place, two ends of the helix transporting device that is provided with in the pressurized treatments storehouse, the disclosed turning cylinder sealing device of disclosed high-temperature and high-pressure sealing device of CN2583455 and CN2793455 for example is all applicable to the sealing at helix transporting device of the present invention two ends.
Be temperature in the assurance high temperature steam treatment device, and prevent that the Field Force from being scalded, all coated heat-insulation layer that suitable thickness is arranged in pressurized treatments storehouse shell and junction thereof.
Simultaneously, handle in the storehouse condensed water for convenience and discharge, be inclined upwardly at pressurized treatments storehouse afterbody and place afterbody and be inclined upwardly when placing, can draining valve be set at pressurized treatments storehouse low side.
The present invention also provides a kind of offal processing method, and when guaranteeing that the offal processing procedure is continuous, its operation is more simplified.
Offal processing method provided by the present invention comprises screening, dedusting selection by winnowing, flow-control and expanded cabo.Described expanded cabo is treated to the on-line continuous expansion process, is to use the aforesaid swelling cabo online equipment of the present invention to carry out cabo expansion and handles, and tobacco stalk raw material is sent into the pressurized treatments storehouse through feeding warehouse, inlet steam gas lock that is:; Evenly sprayed into saturated or superheated steam in the pressurized treatments storehouse; Tobacco stalk raw material in the pressurized treatments storehouse is stirred and is delivered to the outlet of pressurized treatments storehouse by helix transporting device, discharge through outlet steam gas lock then, enters the feed bin that goes out under the atmospheric pressure state, obtains cabo expansion by the moment step-down.
Because the present invention uses aforesaid swelling cabo online treatment facility, swelling cabo online is handled carried out continuously, and need not emptying charging by phased manner, so treatment effeciency improves.
Simultaneously, because the offal of pressurized processing is to obtain the moment step-down by the feed bin that goes out that outlet steam gas lock directly enters under the normal pressure, therefore this bloating plant is not subjected to the restriction of the offal length of handling, long stalk on the ordinary meaning also can enter this bloating plant and carry out expansion process, and is not easy to result in blockage.Therefore in the screening handling procedure of preorder, can omit the length of sieving out is obstructed cutting operation again, simplify the tobacco stalk raw material pretreatment process greatly.
Description of drawings
Be described further below in conjunction with accompanying drawing the technology of the present invention content:
Fig. 1: present device structural representation;
Fig. 2: the pressurized treatments chamber structure schematic diagram that present device is related;
Fig. 3: the shaft sealer structural representation at the helix transporting device two ends that present device is related;
Fig. 4: the steam gas lock structural representation that present device is related;
Fig. 5: the steam gas lock schematic side view that present device is related;
Fig. 6: A portion enlarged diagram among Fig. 5;
Fig. 7: process method flow chart of the present invention.
The specific embodiment
Swelling cabo online equipment involved in the present invention mainly comprises the steam under pressure treating apparatus and is separately positioned on the steam gas lock in steam under pressure treating apparatus porch and exit.
As preferred embodiment, as shown in Figure 1, described steam under pressure treating apparatus comprises that afterbody is the first pressurized treatments storehouse 1 and the second pressurized treatments storehouse 2 that slightly is inclined upwardly and places; The 1 afterbody below outlet of the first pressurized treatments storehouse directly is communicated with the second pressurized treatments storehouse, 2 above-head inlet; The first pressurized treatments storehouse 1 and 2 inside, the second pressurized treatments storehouse all are provided with a helix transporting device 3,4; Helix transporting device 3,4 is driven by adjustable speed drive motors 14,15 respectively; Along the first pressurized treatments storehouse 1 and the second pressurized treatments storehouse, 2 circumference with several steam axially evenly are set spray into nozzle 5.The all coated heat-insulation layer 16 that suitable thickness is arranged in the first pressurized treatments storehouse 1 and the second pressurized treatments storehouse, 2 shells and junction thereof.In the first pressurized treatments storehouse 1 and the second pressurized treatments storehouse, 2 lowest parts draining valve 12 and draining valve 13 are set respectively.The first pressurized treatments storehouse, 1 above-head and the second pressurized treatments storehouse, 2 afterbodys below are installed feed vapors gas lock 6 and discharging steam gas lock 7 respectively.Feed vapors gas lock 6 is connected with feeding warehouse 10, and feeding warehouse 10 is provided with gland steam exhauster 11; Discharging steam gas lock 7 with go out feed bin 8 and be connected, go out feed bin 8 and also be provided with gland steam exhauster 9.
The said equipment keeps in the pressurized treatments storehouse the enough operating pressure in the work use, feeding warehouse and go out the feed bin internal pressure all by being provided with that gland steam exhauster remains on normal pressure or near atmospheric pressure state.The feed pipe of pending offal in feeding warehouse falls in the race of feed vapors gas lock 6 impellers, impeller is under Motor Drive, at the uniform velocity rotation after reducing gear is adjusted, when the impeller groove that is loaded with offal forwards the below to, offal is under the gravity effect, fall in the first pressurized treatments storehouse 1, finish the action of charging.Feed vapors gas lock 6 wheel speeds can be regulated, and enter equably in the pressurized treatments storehouse with the control material.Quilt is sprayed into pressure 8-10bar in the first pressurized treatments storehouse and the second pressurized treatments storehouse 2, temperature is the superheated steam more than 200-350 ℃, pending offal fully stirs and is delivered to 2 outlets of the second pressurized treatments storehouse by helix transporting device 3,4 therein, enter out feed bin 8 via discharging steam gas lock 7, obtain the cabo expansion effect by the moment step-down.Go out feed bin 8 and can be designed as bigger space, its purpose can allow tobacco stalk raw material and vapour mixture obtain the moment step-down and expand, and also can not allow and release steam and escape, and releasing steam can be discharged by gland steam exhauster 9 with air exhauster.
In real work, offal can be adjusted by the different inclination angle of rotating speed and/or pressurized treatments storehouse of helix transporting device at the mean residence time in the steam under pressure treating apparatus.
As shown in Figure 2, pressurized treatments storehouse afterbody is the placement that slightly is inclined upwardly.The helix transporting device main body in pressurized treatments storehouse can adopt in the 31 peripheral boxings of rotation central siphon and connect spiral blade 32 making, simplifies the structure for conveying of helix transporting device, helps the material transmission, prevents that material from stopping up.The helix transporting device two ends are installed seal shaft and are taken the lead 33.Casing 21 two ends in pressurized treatments storehouse mounting flange respectively are connected with end cap 22.Casing 21 is offered charging aperture 24 in the pan feeding section, and along helix transporting device several steam jets 5 is installed axially in the material direction of advance, can spray into steam to inside, pressurized treatments storehouse at any time by nozzle, keeps handling enough operating pressures in the storehouse; When cleaning steaming stalk machine inside, also can spray into clear water and clean inside.The pressurized treatments storehouse also is equipped with hand hole flange 25 and safety valve flange 26.Hand hole flange 25 is used for checking emergency maintenance when steaming stalk machine inside or putty taking place, and safety valve flange 26 is used to install the safety-valve of release; The casing 21 in pressurized treatments storehouse is offered discharging opening 27 below discharge end.On the end cap 22 of pressurized treatments storehouse casing 21 front ends, offer osculum flange 28, purpose is and can discharges the condensed water that produces in the course of work by the draining valve that is installed on the osculum flange 28, and the sewage that cleans inside, pressurized treatments storehouse during machine maintenance.When the entire section structure design is adopted in the pressurized treatments storehouse, do not need medial support structures usually.
As shown in Figure 3, as preferred embodiment, the related helix transporting device end mounted bearing head 33 of present device adopts the cylinder shaft-penetrating type to be connected with rotation central siphon 31, and helix transporting device relies on the spiral pin of a pair of orthogonal layout to transmit moment of torsion.The shaft sealer of welded metal bellow 37 is installed in the annular seal space 38 of bearing head 33, and this shaft sealer also includes dynamic friction ring 35 combinations that static friction ring 34 that carbofrax material makes and carbon graphite material are made, and corresponding auxiliary seal 36.Auxiliary seal 36 can be selected flexible graphite material for use.The metal bellows 37 of welding can carry out temperature difference compensation effectively, guarantees the sealing effectiveness of shaft sealer.
In order fully to keep pressurized treatments storehouse operating pressure, reduce the steam leakage in the pressurized treatments storehouse, charging gas lock 6 and discharging gas lock 7 should adopt the elastic packing steam gas lock of favorable sealing property.
As Fig. 4, Fig. 5 and shown in Figure 6, as preferred embodiment, rotating vane 61 tops of star impeller steam gas lock are equiped with the drop bar 62 that can radially finely tune; The cross section of drop bar 62 is inverse-T-shaped, and its cross section Xiang Duan is circular-arc; Offer slit 63 in rotating vane 61 top ends, installing spring 64 or other flexible member in the slit 63, spring 64 props up the bottom of inserting the drop bar 62 in the slit 63; Move in order to guarantee that drop bar 62 is radially limited, on both sides, drop bar 62 bottom pressing plate 65 is set, and is fixed on rotating vane 61 tops with housing screw 66.Drop bar 62 withstands on the steam gas lock inwall cancave cambered surface by spring or the compression of other flexible member, realizes sealing with this.
As shown in Figure 7, comprise seven steps in the preferred flow of using the treatment process before present device is carried out the offal chopping:
First step: all flow control.The tobacco stalk raw material of the about 8%-13% of moisture is sent into homogenizing device through feeding machine, make to handle the offal flow basicly stable.
Second step: sieve shakes.The basic tobacco stalk raw material uniformly of flow is admitted to the sieve that shakes, to remove the stalk in small, broken bits in the raw material.
Third step: dedusting selection by winnowing.By pneumatic separation device, selection by winnowing such as the dust in the raw material, flax silk, broken leaf are rejected.
The 4th step: reject the metal species foreign material.By on the raw material conveyer belt, magnet being set, remove the ferrous metal in the raw material.
The 4th step: handle flow-control.Raw material is delivered to volume control device, handles flow with accurate control tobacco stalk raw material.
The 5th step: the swollen stalk of on-line continuous.The tobacco stalk raw material of uniform flux is sent into online swollen stalk device through feeding machine.The tobacco stalk raw material of being sent into by feeding machine passes through feeding warehouse, enters the pressurized treatments storehouse through the feed vapors gas lock.Evenly being sprayed into pressure 8-10bar, temperature in the pressurized treatments storehouse is 200-350 ℃ superheated steam, and pressurized treatments storehouse internal gas pressure maintains more than the 8bar.Tobacco stalk raw material in the pressurized treatments storehouse is stirred and is delivered to the outlet of pressurized treatments storehouse by helix transporting device, discharge through discharging steam gas lock then, enters the discharge bin under the atmospheric pressure state, obtains cabo expansion by the moment step-down.The processing time of tobacco stalk raw material in the pressurized treatments storehouse generally was controlled in 1-3 minute.In the practical operation, can control the offal pressurized treatments time by the rotating speed of adjusting helix transporting device.
The 6th step: selection by winnowing.The offal that has expanded that enters discharge bin is transported to winnowing machine, removes the foreign material of handling in the offal material such as not expanded cabo, stone etc.
The 7th step: store.Expanded cabo after handling is delivered to the storage cabinet, in order to chopping.