CN102763891B - Dry-method single-screw bulking machine - Google Patents

Dry-method single-screw bulking machine Download PDF

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Publication number
CN102763891B
CN102763891B CN201210238614.4A CN201210238614A CN102763891B CN 102763891 B CN102763891 B CN 102763891B CN 201210238614 A CN201210238614 A CN 201210238614A CN 102763891 B CN102763891 B CN 102763891B
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main shaft
cavity
spindle
bearing
discharging
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CN102763891A (en
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谢剑波
陈海峰
彭君建
张猛
王小波
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Yangzhou Huamei intellectual property affairs Co.,Ltd.
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Jiangsu Muyang Group Co Ltd
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Abstract

The invention relates to a dry-method single-screw bulking machine in the field of food machines. The dry-method single-screw bulking machine comprises a machine body and a bulking cavity, wherein a spindle is arranged in the bulking cavity; an extrusion screw is fixedly arranged on the spindle; one end of the spindle extends out the bulking cavity and is connected with a bearing pedestal in a rotational mode by a first bearing; the bearing pedestal is fixedly connected with the machine body; a feed device is arranged on the lateral surface of one end, which is close to the bearing pedestal, of the bulking cavity, and the other end of the bulking cavity is connected with a discharge cavity; a discharge hole is formed on the lateral surface of the discharge cavity in the radial direction and is connected with a discharge template; the other end of the spindle penetrates through the discharge cavity; the shaft end of the other end of the spindle is connected with a support base at the front end of the spindle in a rotational mode by a second bearing; the support base at the front end of the spindle is connected with a cavity body of the discharge cavity integrally, and the periphery of the support base is fixedly connected with the machine body; and a material isolating ring is arranged between the cavity body of the discharge cavity and the support base at the front end of the spindle. According to the dry-method single-screw bulking machine, the support mode of the spindle is changed by changing the discharge direction of the bulking cavity, so that the support strength of the spindle is enhanced, the service life of each component is prolonged, and the capacity level of the bulking machine is improved.

Description

A kind of dry method single serew bulker
Technical field
The present invention relates to bulking machine in a kind of food machinery field, particularly a kind of dry method single serew bulker.
Background technology
The bulking machine used in existing food, field of fodder is mainly divided into wet-process puffing machine and dry method bulking machine.Dry method bulking machine, owing to eliminating quality-adjusting device and vapour system, greatly reduces the cost in expanded stage, deeply welcomes by vast Feed Manufacturing producer.But generally all there is following problem in existing dry method bulking machine:
1. substantially belong to self-heating type bulking machine: produce heat energy by the frictional heating of screw rod, Builking cavity and material and screw rod high-speed revolution shearing and make material slaking, dehydration from discharge end extrusion molding, this just causes the difficult control of temperature in Builking cavity, and cavity temperature skewness, often there is the situation of imitation frosted glass, affect the quality that material is expanded;
2. screw rod main shaft often ruptures: because dry-way extrusion eliminates steam regulation of texture, conditioning of texture process, and this just needs bulking machine itself to provide material expanded required a large amount of heat energy, and therefore dry method bulking machine rotating speed is high, and main shaft and screw rod must bear high speed high shear force at work.And the discharge end of existing dry method bulking machine is provided with extruding and discharging template, the discharge end of main shaft and screw rod is made to adopt cantilever-designed, under the effect of high moment of torsion and axial high pressure bulking machine main shaft easily occur bending and deformation and with expanded cavity inner wall scraped finish, easily there is fracture in Long-Time Service, limit the bulking machine of the large-scale high production capacity developing more big L/D ratio simultaneously;
3. large for the bearing type selecting of rotational support main shaft and the life-span is on the low side, due to the cavity pressure before bulking machine discharge end material discharging mould very high (the highest 12MPa), make that spring bearing work is medium-term and long-term bears very high axial force, have a strong impact on the service life of bearing.
4. production capacity is on the low side: puffing process needs regular hour and heat energy, and dry method bulking machine relies on friction to produce heat energy completely, a large amount of mechanical energy need be consumed, and the intensity difference supported due to main shaft suspended wall, the rotating speed limiting bulking machine improves thus limits the lifting of production capacity.
Summary of the invention
The present invention is directed to the problems referred to above that existing dry method bulking machine exists, a kind of dry method single serew bulker is provided, be intended to by changing the discharging direction of Builking cavity to change the supporting way of main shaft, increase the support strength of main shaft, extend the service life of main shaft and spring bearing, improve the production capacity level of bulking machine.
The object of the present invention is achieved like this, a kind of dry method single serew bulker, comprise body and Builking cavity, main shaft is provided with in described Builking cavity, described main shaft is fixed with extruding screw, it is outer and be rotationally connected through clutch shaft bearing and bearing block that Builking cavity is stretched out in main shaft one end, described bearing block is fixedly connected with body, described Builking cavity is provided with drawing-in device near the side of bearing block one end, the described Builking cavity other end is connected with discharging chamber, it is characterized in that, the radial side in described discharging chamber is provided with discharging opening, discharging opening is connected with material discharging mould, the main shaft other end is through discharging chamber, the axle head of the described main shaft other end is connected with front-end of spindle supporting seat rotationally by the second bearing, described front-end of spindle supporting seat is connected with discharging chamber cavity one, and periphery is fixedly connected with body, material shading ring is provided with between described discharging chamber cavity and front-end of spindle supporting seat.
The beneficial effect of bulking machine of the present invention is adopted to be: the direction side direction discharging vertical with main shaft is made in discharging direction into, conveniently support is set at front-end of spindle, to strengthen the support strength of main shaft, and improve the ability of the counter-bending distortion of main shaft and anti-shearing distortion, effectively prevent screw rod because of flexural deformation with the scraped finish of Builking cavity inwall; And main shaft Bidirectional supporting improves the stability of bulking machine in the situation of running up, be also convenient to increase machine spindle draw ratio to improve equipment capacity; Meanwhile, side direction discharging, decreases the axial compressive force that screw front end produces due to Builking cavity inner high voltage, makes the axially loaded of spring bearing reduce thus improve the service life of bearing; Also improve the service life of each parts of complete machine simultaneously, reduce maintenance cost.
For ease of being fixedly connected with of discharging chamber axle head, main shaft between described Builking cavity and discharging chamber is fixed with pressurize ring, the main shaft core of outer end, described discharging chamber is provided with internal thread, material barrier cuff be contained in main shaft outer end and end against extruding screw end, main shaft outer end is provided with end axle, described end axle and main shaft link are provided with the spiro rod section be connected with main shaft internal thread, end axle is provided with for the outer step against material shading ring, sealing ring is provided with between end axle outer step and front-end of spindle supporting seat inwall, between the outside that described second bearing is rotatably supported in end axle outer step and front-end of spindle supporting seat, the outer end of described second bearing is provided with back-up ring, the outer face of described front-end of spindle supporting seat is fixedly connected with the gland for compressing the second bearing outer ring.In this structure, discharging chamber and Builking cavity isolate by pressurize ring, are conducive to the maintenance of expanded cavity pressure, prevent the pressure release because of discharging; Screw rod and main shaft, by holding the step end of axle against screw rod, are fixed by material shading ring on the one hand, prevent material to be extruded in front-end of spindle supporting seat on the other hand, and the sealing ring of end periphery, pillow block rank effectively prevents discharging chamber from leaking vapour pressure release.
Improve as of the present invention another, be provided with heating circle described Builking cavity external week, described heating circle is outer is provided with cooling air channel, and described main shaft core is provided with cool cycles pipeline, and described cool cycles pipeline is rotationally connected by swivel joint and rear-end of spindle.In this structure, arrange heating collar, cooling air channel outside cavity, main shaft axle in-core arranges cool cycles pipeline, the convenient control to expanded cavity temperature, and can make to realize in Builking cavity being rapidly heated or uniform decrease in temperature, improve the quality of expanded material, and can further improve the production capacity of bulking machine.
Accompanying drawing explanation
Fig. 1 is a kind of dry method single serew bulker front view of invention.
Fig. 2 is that the A-A of Fig. 1 is to profile.
Fig. 3 is the partial enlarged drawing at I place in Fig. 1.
Wherein, 1 bolt; 2 material discharging moulds; 3 material cutting devices; 4 bodies; 5 Builking cavities; 6 heating circles; 7 cooling air channels; 8 main shafts; 9 extruding screws; 10 drawing-in devices; 11 bearing blocks; 12 clutch shaft bearings; 13 cool cycles pipelines; 14 pressurize rings; 15 discharging chambeies; 16 material shading rings; 17 sealing rings; 18 front-end of spindle supporting seats; 19 second bearings; 20 end axles; 21 glands.
Detailed description of the invention
As Fig. 1, Figure 2 shows that a kind of dry method single serew bulker of the present invention, comprise body 4 and Builking cavity 5, main shaft 8 is provided with in Builking cavity 5, main shaft 8 is fixed with extruding screw 9, it is outer and be rotationally connected through clutch shaft bearing 12 and bearing block 11 that Builking cavity 5 is stretched out in main shaft 8 one end, bearing block 11 is fixedly connected with body 4, the outer end of main shaft 8 projecting shaft bearing is connected with transmission device, Builking cavity 5 is provided with drawing-in device 10 near the side of bearing block one end, Builking cavity 5 other end is connected with discharging chamber 15, the radial side in discharging chamber 15 is provided with discharging opening, discharging opening is connected with material discharging mould 2, the exit side of material discharging mould 2 is connected with material cutting device 3, main shaft 8 other end is through discharging chamber 15, the axle head of main shaft 8 other end is connected with front-end of spindle supporting seat rotationally by the second bearing 19, front-end of spindle supporting seat 19 is connected with discharging chamber 15 cavity one, and periphery is fixedly connected with body 4, material shading ring 16 is provided with between discharging chamber 5 cavity and front-end of spindle supporting seat 19.
In the present invention, the direction side direction discharging vertical with main shaft 8 is made in discharging direction into, and arranges support in front end, main side 8, to strengthen the support strength of main shaft 8, and improve the ability of the counter-bending distortion of main shaft 8 and anti-shearing distortion, effectively prevent screw rod 9 because of flexural deformation with the scraped finish of Builking cavity 5 inwall; And main shaft 8 Bidirectional supporting improves the stability of bulking machine in the situation of running up, be also convenient to increase machine spindle draw ratio to improve equipment capacity; Meanwhile, side direction discharging, decreases the axial compressive force that screw rod 9 front end produces due to Builking cavity inner high voltage, makes back shaft bearing to stressed reduction thus the service life of raising bearing.Also improve the service life of each parts of complete machine simultaneously, reduce maintenance cost.
For ease of being fixedly connected with of discharging chamber axle head, main shaft between Builking cavity 5 and discharging chamber 15 is fixed with the pressurize ring 14 preventing Builking cavity 5 pressure release, main shaft 8 core of outer end, discharging chamber 15 is provided with internal thread, material shading ring 16 be sleeved on main shaft 8 outer end and end against extruding screw 9 end, material in discharging chamber 15 and main side front support seat 18 inner chamber are effectively kept apart by this material shading ring 16, prevent material from leakage, material shading ring 16 one end is against extruding screw 9 end, main shaft 8 outer end is provided with end axle 20, end axle 20 is provided with the link of main shaft 8 spiro rod section be connected with main shaft 8 internal thread, end axle 20 is provided with for the outer step against compression material shading ring 16, sealing ring 17 is provided with between end axle outer step and front-end of spindle supporting seat 18 inwall, sealing circle 17 can prevent discharging chamber 15 and Builking cavity 5 pressure release and affect material expansion effect, between the outside that second bearing 19 is rotatably supported in end axle 20 outer step and front-end of spindle supporting seat 18, the main shaft 8 of the second bearing 19 outer end is provided with back-up ring, the outer face of front-end of spindle supporting seat 18 is fixedly connected with the gland 21 for compressing the second bearing 19 outer ring by some bolts 1.
For ease of effectively controlling expanded cavity temperature, improve material puffing quality and improve equipment capacity, be provided with heating circle 6 Builking cavity 5 external week, cooling air channel 7 is provided with outside heating circle 6, this cooling air channel 7 is connected with cooling blower or cooling system, main shaft 8 core is provided with cool cycles pipeline 13, and this cool cycles pipeline 13 is rotationally connected by swivel joint and main shaft 8 rearward end, and cool cycles pipeline 13 outside is connected with cooling recirculation system.In this structure, heating circle 6, cooling air channel 7 are set outward at cavity simultaneously, cool cycles pipeline 13 is set in main shaft 8, facilitate the control of expanded cavity temperature, and make Builking cavity realize being rapidly heated or uniform decrease in temperature, improve the quality of expanded material, and can further improve the production capacity of bulking machine.
Contrast experiment below for adopting single serew bulker of the prior art and dry method single serew bulker of the present invention to carry out.
For convenience of contrast, in following test, material formula used is identical, is corn, and the smashing fineness of material is 95% by 80 mesh sieves, and 99.5% crosses 60 mesh sieves, and 100% crosses 50 mesh sieves, and the moisture of material is 5%.For convenience of the contrast to the distribution of expanded cavity temperature, in each table, Builking cavity temperature value is the temperature value of three points for measuring temperature arranged to discharge end direction along Builking cavity from feed end.
Test 1
Utilize dry method single serew bulker of the prior art to carry out extrusion to material, wherein the main motor current 250Kw of bulking machine, screw diameter 260mm, the draw ratio of screw rod is 13:1, and the discharging mode aperture of material discharging mould is Φ 8.
Result of the test is as shown in table 1, and material meets the requirements after expanding processing after testing, but the main shaft fracture after 360 hours of this equipment use.
Test 2
Dry method single serew bulker of the present invention is utilized to carry out extruding experiment, wherein, the main motor current 250Kw of bulking machine, screw diameter 260mm, the draw ratio of screw rod is 13:1, and the discharging mode aperture of material discharging mould is Φ 8mm; Result of the test is as shown in table 2,
Contrast table 1 show and table 2 data visible, the present invention can obviously increase bulking machine production capacity, reduce production cost, enhance productivity.And detect main shaft in use after 1000 hours not rupture, main frame current stabilization, complete machine is stable.
 
Test 3
Dry method single serew bulker of the present invention is utilized to carry out extruding experiment, wherein, the main motor current 250Kw of bulking machine, screw diameter 260mm, the draw ratio of screw rod is 15:1, and the discharging aperture of material discharging mould is all Φ 8mm; Result of the test is as shown in table 3.
Contrast table 1 and table 3 data visible, under equal conditions increase the production capacity that screw slenderness ratio and lift-bolt rotating speed significantly improve machine, reduce ton material power consumption.
And use after 1000 hours main shaft do not rupture after testing, complete machine is stable.
Test 4
Dry method single serew bulker of the present invention is utilized to carry out extruding experiment, wherein, bulking machine main motor current 250Kw, screw diameter 260mm, the draw ratio of screw rod is 15:1; , the discharging aperture of material discharging mould is all Φ 8mm; Test structure is as shown in table 4.
Contrast table 1 and table 4 data visible, further lift-bolt rotating speed significantly improves the production capacity of machine, reduces ton material power consumption.And do not rupture at use 1000 hours main shafts, complete machine is stable.
Relatively above result of the test shows, adopt dry method single serew bulker of the present invention, because screw rod main shaft support intensity improves, counter-bending distortion and the anti-shearing deformability of main shaft significantly improve, the service life of main shaft extends greatly, and increasing main shaft draw ratio by improving rotating speed, significantly improving the production capacity of bulking machine, greatly enhancing productivity.Simultaneously in Builking cavity, Temperature Distribution is reasonable, effectively prevents that material is overheated in extrusion to be burnt, and the quality of expanded rear material improves.
The present invention is not limited to above-described embodiment, every on the basis of the technical scheme of disclosure of the invention, those skilled in the art is according to disclosed technology contents, do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all within the scope of the invention.

Claims (2)

1. a dry method single serew bulker, comprise body and Builking cavity, main shaft is provided with in described Builking cavity, described main shaft is fixed with extruding screw, it is outer and be rotationally connected through clutch shaft bearing and bearing block that Builking cavity is stretched out in main shaft one end, described bearing block is fixedly connected with body, described Builking cavity is provided with drawing-in device near the side of bearing block one end, the described Builking cavity other end is connected with discharging chamber, the radial side in described discharging chamber is provided with discharging opening, discharging opening is connected with material discharging mould, the main shaft other end is through discharging chamber, the axle head of the described main shaft other end is connected with front-end of spindle supporting seat rotationally by the second bearing, described front-end of spindle supporting seat is connected with discharging chamber cavity one, and periphery is fixedly connected with body, material shading ring is provided with between described discharging chamber cavity and front-end of spindle supporting seat, it is characterized in that, main shaft between described Builking cavity and discharging chamber is fixed with pressurize ring, the main shaft core of outer end, described discharging chamber is provided with internal thread, material barrier cuff be contained in main shaft outer end and end against extruding screw end, main shaft outer end is provided with end axle, described end axle and main shaft link are provided with the spiro rod section be connected with main shaft internal thread, end axle is provided with for the outer step against material shading ring, sealing ring is provided with between end axle outer step and front-end of spindle supporting seat inwall, between the outside that described second bearing is rotatably supported in end axle outer step and front-end of spindle supporting seat, the outer end of described second bearing is provided with back-up ring, the outer face of described front-end of spindle supporting seat is fixedly connected with the gland for compressing the second bearing outer ring.
2. a kind of dry method single serew bulker according to claim 1, it is characterized in that, described Builking cavity periphery is provided with heating circle, described heating circle is outer is provided with cooling air channel, described main shaft core is provided with cool cycles pipeline, and described cool cycles pipeline is rotationally connected by swivel joint and rear-end of spindle.
CN201210238614.4A 2012-07-11 2012-07-11 Dry-method single-screw bulking machine Active CN102763891B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608261A (en) * 1983-11-04 1986-08-26 New Zealand Government Property Corporation Method and apparatus for producing a puffed foodstuff
DE19714713A1 (en) * 1996-04-13 1997-11-06 Kahl Amandus Maschf Feedstuff steam treatment expander
CN200938836Y (en) * 2006-08-29 2007-08-29 赵景祥 Stalks bulking machine
CN201426360Y (en) * 2009-06-30 2010-03-24 江苏牧羊集团有限公司 Extrusion processing device for bypass ripening
CN202154010U (en) * 2011-06-10 2012-03-07 江苏牧羊集团有限公司 Discharging device of expansion extruder
CN202819584U (en) * 2012-07-11 2013-03-27 牧羊有限公司 Dry-method single-screw bulking machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2258479C (en) * 1996-07-18 2007-10-23 Wenger Manufacturing, Inc. Short length tapered extrusion cooking device
JPH1075759A (en) * 1996-09-03 1998-03-24 Tafuto:Kk Single screw extrusion molding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608261A (en) * 1983-11-04 1986-08-26 New Zealand Government Property Corporation Method and apparatus for producing a puffed foodstuff
DE19714713A1 (en) * 1996-04-13 1997-11-06 Kahl Amandus Maschf Feedstuff steam treatment expander
CN200938836Y (en) * 2006-08-29 2007-08-29 赵景祥 Stalks bulking machine
CN201426360Y (en) * 2009-06-30 2010-03-24 江苏牧羊集团有限公司 Extrusion processing device for bypass ripening
CN202154010U (en) * 2011-06-10 2012-03-07 江苏牧羊集团有限公司 Discharging device of expansion extruder
CN202819584U (en) * 2012-07-11 2013-03-27 牧羊有限公司 Dry-method single-screw bulking machine

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