CN201550585U - Triple screw rod structure of extrusion machine - Google Patents
Triple screw rod structure of extrusion machine Download PDFInfo
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- CN201550585U CN201550585U CN2009200718632U CN200920071863U CN201550585U CN 201550585 U CN201550585 U CN 201550585U CN 2009200718632 U CN2009200718632 U CN 2009200718632U CN 200920071863 U CN200920071863 U CN 200920071863U CN 201550585 U CN201550585 U CN 201550585U
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Abstract
The utility model discloses a triple screw rod structure of an extrusion machine, which comprises a first screw rod, a second screw rod and a third screw rod, wherein the three screw rods all have the following structure: at least two connecting sections, at least two heat insulating sections, at least a first mixing section, at least a second mixing section, at least a third mixing section and a discharging section; the first screw rod and the second screw rod are mutually engaged and contra-rotated, and the first screw rod and the third screw rod are mutually engaged and contra-rotated; the included angle alpha between the circle center connection line of the first and the second screw rods and the circle center connection line of the first and the third screw rods ranges from 70 degrees to 100 degrees; the first screw rod is in tangency with the second screw rod, and the first screw rod is also in tangency with the third screw rod; the first screw rod is a driving screw rod, and the second screw rod and the third screw rod are driven screw rods, or the three screw rods are all driving screw rods.
Description
Technical field
The utility model relates to a kind of three-screw-rod structure, particularly a kind of three-screw-rod structure of extruder.
Background technology
Along with increase day by day to the requirement of the nutrition of food, the bread basket and the production method thereof of various composite nutrients are also developing by leaps and bounds, from the pre-steaming method technology of early stage acid, directly soak technologies such as suction method and coating method, develop into nowadays more complete:, obtain the technological process of multi-nutrient fortification composite cereal at last from cereal pulverizing → preliminary treatment → mix with nutrient → push → excision forming → drying → screening → join rice in proportion.
And the step of extruding-excision forming wherein is the important step in the production process, single screw rod or the twin (double) screw extruder generally taked, the hydrate of cereal powder is pushed the back by certain shape mould, obtain the cereals of needed shape, size through cutting, and on corresponding conveyer belt, carry, until check and packaging step.
Simultaneously, because the techniqueflow of extrusion modling process can be processed into cereal the product with certain puffed degree and mellowness, be applicable to products such as various food, nourishing additive agent, animal feed.
Referring to accompanying drawing 1, international open text WO01/72151 discloses a kind of incorporate composite cereal mixing, extruding, former.Comprise raw material blending device, twin (double) screw extruder, extrusion device, excision forming equipment.Raw material blending device wherein and twin (double) screw extruder link to each other by the vertical transport pipeline that is communicated with, and be provided with control valve in pipelines, to adjust speed and the product efficiency that the premix raw material enters extruder.Be arranged in parallel in the twin (double) screw extruder screw rod of two mutual interlocks of screw thread rotates in opposite directions, makes the material of from top to bottom carrying can carry out compacting fully and conveying.End at extruder has extrusion dish, offer a plurality of extrusion cavities on the extrusion dish, be close to the extrusion cavities place and be provided with cutter sweep, the strip-shaped materials that squeezes out can be cut into needed strip, granular or sheet products, to meet the needs of various cereal joint products.
Referring to accompanying drawing 2, U.S. Pat 5350585 discloses a kind of double-screw structure of extruder.Described double-screw structure is divided into multistage, and its thread density is all inconsistent, to cooperate the needs in each stage in the extrusion process.Simultaneously, also offer the cavity in the screw rod, so that material fully mixes in screw extruder.
Yet traditional screw rod extruding excision forming machine still has some shortcomings:
1, the product that obtains of traditional extruding cutting equipment directly carries out the heating, drying step, yet but tends in baking step and since the product that contains moisture suddenly dehydration cause product surface to break or pulverize, cause the yield rate reduction.
2, the output of traditional extrusion formation equipment and productive rate are difficult to be greatly improved.
3, the screw rod of traditional screw extruder directly is positioned in the cavity of ellipse or circular cross-section, and in extruding and the course of conveying, material is easy to pile up in some position generation, thereby squeezing effect is reduced again.
4, packing phenomenon is often arranged in the screw rod cavity, and these deposits of failing for a long time fully to be pushed can condense into piece after after a while, thereby influence the uniformity coefficient of integral product output efficiency and product, need often cleaning.Yet the screw rod of traditional twin (double) screw extruder is changed the process difficulty, and after shutting down, screw rod still can produce mechanical rotation because of the structure of mutual interlock, causes the accident easily.
5, last, in the process of preparation reconstituted rice, gelatine can take place in the material that water and ground rice mix under heating condition, existing conventional extruder not only can't produce suitable gelatine degree also can't solve the problem that material viscosity that gelatine brings increases.
In view of above-mentioned weak point, the utility model discloses a kind of three-screw-rod structure of extruder, it has technical characterictic as mentioned below, to solve the prior art problem.
Summary of the invention
The utility model discloses a kind of three-screw-rod structure of extruder, comprise first screw rod, second screw rod and the 3rd screw rod with multistage temperature control and heating functions.
Described first screw rod and second screw rod are meshing with each other to changeing, and described first screw rod and the 3rd screw rod are meshing with each other to changeing.Angle α between the circle center line connecting of the circle center line connecting of described first screw rod and second screw rod and first screw rod and the 3rd screw rod is 70 °～100 °.Described first screw rod and second screw rod are tangent, and first screw rod and the 3rd screw rod are tangent.Described first screw rod is the active screw rod, second screw rod and the driven screw rod of the 3rd screw rod, and perhaps the three is the active screw rod;
Described first screw rod, second screw rod and the 3rd screw rod all have following structure:
At least 2 linkage sections;
At least 2 adiabatic distance pieces;
At least 1 first mixer;
At least 1 second mixer;
At least 1 the 3rd mixer;
1 discharging section.
Each corresponding linkage section of described first screw rod and second screw rod, each corresponding adiabatic distance piece, each corresponding first mixer, each corresponding second mixer, each corresponding the 3rd mixer, each discharging section are meshing with each other.
Each corresponding linkage section of described first screw rod and the 3rd screw rod, each corresponding adiabatic distance piece, each corresponding first mixer, each corresponding second mixer, each corresponding the 3rd mixer, each discharging section are meshing with each other.
Described adiabatic distance piece is the helicitic texture of being made by heat-insulating material, and described first mixer, second mixer, the 3rd mixer and discharging section are the helicitic textures of being made by Heat Conduction Material
Described discharging section is the helicitic texture made by Heat Conduction Material, be positioned at the terminal of screw rod and link to each other with 1 linkage section, and described discharging section is tapered from the position terminad that links to each other with linkage section.
Described each linkage section, adiabatic distance piece, first mixer, second mixer, the 3rd mixer and discharging section is coaxial and equal diameters.
Described linkage section further comprises first gear and second gear.Described first gear and second gear have 6～16 teeth, and interlaced 11.25 °～30 °.Corresponding first gear of each of described first screw rod and second screw rod is meshing with each other and each corresponding second gear is meshing with each other.Because first gear and the interlaced certain angle of second gear, this just causes first gear of first screw rod to be meshing with each other with first gear of second screw rod, and can't be meshing with each other with second gear of second screw rod, so this has just guaranteed that first gear of first screw rod and second screw rod is meshing with each other, second gear is meshing with each other, thereby carry out first screw rod and second screw rod sealed to fix its relative position, avoid first screw rod and second screw rod that dislocation and displacement take place in to the process of changeing, thereby guarantee that engagement is intact between first screw rod and second screw rod.In like manner, corresponding first gear of each of described first screw rod and the 3rd screw rod is meshing with each other and being meshing with each other of each corresponding second gear, also avoid first screw rod and the 3rd screw rod that dislocation and displacement take place in to the process of changeing, thereby guarantee that engagement is intact between first screw rod and the 3rd screw rod.
Described each linkage section, adiabatic distance piece, first mixer, second mixer, the 3rd mixer and discharging section are hollow structure, and its inside has respectively and is interconnected and coaxial axocoel.The equal diameters of the axocoel of described linkage section and adiabatic distance piece.The equal diameters of the axocoel of described first mixer, second mixer, the 3rd mixer and discharging section.The diameter of described adiabatic distance piece axocoel is less than the diameter of mixer axocoel.
Describedly be provided with heating system in each axocoel inside.Described heating system comprises the path that is positioned at each axocoel axle center and passes each axocoel successively, described path is the hollow structure of being made by adiabatic insulating materials, its inside is provided with the many groups heater circuit that links to each other with the external world, is used for to being positioned at the path outside and each heating resistor power supply interconnective with it.Described heating resistor comprises the heating resistor that lays respectively at first mixer, second mixer, the 3rd mixer and discharging section inside.Described each heating resistor heats first mixer, second mixer, the 3rd mixer and discharging section under the control of the many groups heater circuit that links to each other with the external world respectively relatively independently.
The temperature of each mixer is from small to large, first mixer, second mixer, the 3rd mixer, and wherein the temperature of discharging section is a little less than the 3rd mixer.
The thread density of each mixer is from small to large, second mixer, first mixer, the 3rd mixer, and wherein the thread density of discharging section equates with the thread density of the 3rd mixer.
The length of described second mixer is greater than the length of first mixer and the 3rd mixer.Described discharging section is a frustum cone structure, and its diameter reduces gradually from the position terminad that links to each other with linkage section, and the bus of its frustum cone structure and axial angle β are 15 °～35 °.
Described first screw rod, second screw rod and the 3rd screw rod can comprise second mixer that at least 2 length are identical with thread density, temperature is different, at least 2 the 3rd mixers that length is identical with thread density, temperature is different.Wherein, the temperature of each second mixer increases successively along flow direction of material, and the temperature of each the 3rd mixer reduces successively along flow direction of material.The temperature of described discharging section is lower than the temperature of adjacent the 3rd mixer.Can make each mixer in the three-screw-rod structure have more changeable temperature like this, to adapt to different needs.
The diameter of described first screw rod, second screw rod and the 3rd screw rod is 40mm～300mm, screw rod effective L D ratio 12～72, screw rod centre-to-centre spacing 40mm～300mm, axocoel diameter 10mm～160mm, depth of thread engagement 10mm～50mm, pitch 5mm～400mm.
Described first screw rod and second screw rod are to commentaries on classics, and first screw rod edge clockwise rotates, second screw rod edge rotates counterclockwise.Described first screw rod and the 3rd screw rod are to commentaries on classics, and first screw rod edge clockwise rotates, the 3rd screw rod edge rotates counterclockwise.
Below; to be described further by specific embodiment; yet embodiment only is giving an example of the optional embodiment of the utility model, and its disclosed feature only is used for explanation and sets forth the technical solution of the utility model, and is not used in qualification protection domain of the present utility model.
Description of drawings
Fig. 1 is the overall structure schematic diagram with extruder of three-screw-rod structure of the present utility model.
Fig. 2 is the longitudinal section schematic diagram along Figure 1A-A ' direction with extruder of three-screw-rod structure of the present utility model.
Fig. 3 is turning to of three-screw-rod structure of the present utility model and flow direction of material schematic diagram.
Fig. 4 is that the screw engages of three-screw-rod structure of the present utility model concerns schematic diagram figure.
Fig. 5 is the screw rod side view of three-screw-rod structure of the present utility model.
Fig. 6 is the longitudinal section cutaway view vertically of the screw rod of three-screw-rod structure of the present utility model.
The specific embodiment
According to claim of the present utility model and the disclosed content of specification, the technical solution of the utility model is specific as follows described:
Embodiment one:
As Fig. 2 and shown in Figure 4, a kind of three-screw-rod structure of extruder with multistage temperature control and heating functions comprises first screw rod (41), second screw rod (42) and the 3rd screw rod (43).
Described first screw rod (41) and second screw rod (42) are meshing with each other to commentaries on classics, and first screw rod (41) edge clockwise rotates, second screw rod (42) edge rotates counterclockwise.Described first screw rod and the 3rd screw rod (43) are meshing with each other to commentaries on classics, and first screw rod (41) edge clockwise rotates, the 3rd screw rod (43) edge rotates counterclockwise.Described first screw rod (41) is the active screw rod, second screw rod (42) and the driven screw rod of the 3rd screw rod (43), and perhaps the three is the active screw rod.
Described first screw rod (41) and second screw rod (42) are tangent, and first screw rod (41) and the 3rd screw rod (43) are tangent.Angle α between the circle center line connecting of the circle center line connecting of described first screw rod (41) and second screw rod (42) and first screw rod (41) and the 3rd screw rod (43) is 70 °～100 °.
Along the flow direction of material direction, that described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) have respectively is interconnective successively, equal diameter and coaxial first mixer 53, adiabatic distance piece 52, linkage section 51, the second mixer 54a, adiabatic distance piece 52, linkage section 51, the second mixer 54b, adiabatic distance piece 52, linkage section 51, the 3rd mixer 55a, adiabatic distance piece 52, the 3rd mixer 55b, linkage section 51, discharging section 56.
The second mixer 54a and the second mixer 54b belong to second mixer 54, the length of the two but temperature difference identical with thread density.The 3rd mixer 55a and the 3rd mixer 55b belong to the 3rd mixer 55, the length of the two but temperature difference identical with thread density.
The temperature of each mixer is from small to large, first mixer 53, the second mixer 54a, the second mixer 54b, the 3rd mixer 55b, the 3rd mixer 55a, and wherein the temperature of discharging section 56 is a little less than the 3rd mixer 55b.
The thread density of each mixer is from small to large, second mixer 54 (comprising 54a and 54b), first mixer 53, the 3rd mixer 55 (comprising 55a and 55b), and wherein the thread density of discharging section 56 equates with the thread density of the 3rd mixer 55.
The length of described second mixer 54 (comprising 54a and 54b) is greater than the length (comprising 55a and 55b) of first mixer 53 and the 3rd mixer 55.
Described linkage section 51 further comprises first gear 511 and second gear 512.Described first gear 511 and second gear 512 have 6～16 teeth, and interlaced 11.25 °～30 °.Corresponding first gear 511 of each of described first screw rod 41 and second screw rod 42 is meshing with each other and each corresponding second gear 522 is meshing with each other.Because first gear 511 and second gear, 512 interlaced certain angles, this just causes first gear 511 of first screw rod 41 to be meshing with each other with first gear 511 of second screw rod 42, and can't be meshing with each other with second gear 512 of second screw rod 42, so this first gear 511 that has just guaranteed first screw rod 41 and second screw rod 42 is meshing with each other, second gear 512 is meshing with each other, thereby carry out first screw rod 41 and second screw rod 42 sealed to fix its relative position, avoid first screw rod 41 and second screw rod 42 that dislocation and displacement take place in to the process of changeing, thereby guarantee that engagement is intact between first screw rod 41 and second screw rod 42.In like manner, corresponding first gear 511 of each of described first screw rod 41 and the 3rd screw rod 43 is meshing with each other and being meshing with each other of each corresponding second gear 522, also avoid first screw rod 41 and the 3rd screw rod 43 that dislocation and displacement take place in to the process of changeing, thereby guarantee that engagement is intact between first screw rod 41 and the 3rd screw rod 43.
Described adiabatic distance piece 52 is helicitic textures of being made by heat-insulating material, and each corresponding adiabatic distance piece 52 of described first screw rod (41) and second screw rod (42), first screw rod (41) and the 3rd screw rod (43) is meshing with each other.The left and right sides of described adiabatic distance piece links to each other with the mixer with uniform temperature respectively, and this thermal insulation distance piece plays heat-blocking action, guarantees the temperature difference of the mixer of its left and right sides, and the formation temperature subregion avoids the temperature in each district to obscure.
As shown in Figure 4 and Figure 5, described first mixer 53, second mixer 54, the 3rd mixer 55 and discharging section 56 are helicitic textures of being made by Heat Conduction Material, and each corresponding first mixer 53 of first screw rod (41) and second screw rod (42), first screw rod (41) and the 3rd screw rod (43) is meshing with each other, each corresponding second mixer 54 is meshing with each other, each corresponding the 3rd mixer 55 is meshing with each other.Wherein, described discharging section 56 is positioned at the end of screw rod, is frustum cone structure, and its diameter reduces gradually from the position terminad that links to each other with linkage section 51, and the bus of its frustum cone structure and axial angle β are 15 °～35 °.
As shown in Figure 6, described each linkage section 51, adiabatic distance piece 52, first mixer 53, second mixer 54, the 3rd mixer 55 and discharging section 56 are hollow structure, and its inside has respectively and is interconnected and coaxial axocoel 61, axocoel 62, axocoel 63, axocoel 64, axocoel 65 and axocoel 66.The axocoel 61 of described linkage section 51 and adiabatic distance piece 52 and 62 equal diameters.Described first mixer 53, second mixer 54, the 3rd mixer 55 and the axocoel 63,64,65 of discharging section 56 and 66 equal diameters.Described axocoel 61 and 62 diameter are less than the diameter of axocoel 63,64,65 and 66.
As shown in Figure 6, describedly be provided with heating system 7 in each axocoel inside.Described heating system 7 comprises the path 70 that is positioned at each axocoel axle center and passes each axocoel successively, described path 70 is hollow structures of being made by adiabatic insulating materials, its inside is provided with the many groups heater circuit that links to each other with the external world, is used for to being positioned at path 70 outsides and each heating resistor power supply interconnective with it.Described heating resistor comprises the heating resistor 73,74,75 and 76 that lays respectively at first mixer 53, second mixer 54, the 3rd mixer 55 and discharging section 56 inside.Described each heating resistor 73,74,75 heats first mixer 53, second mixer 54, the 3rd mixer 55 and discharging section 56 with 76 under the control of the many groups heater circuit that links to each other with the external world respectively relatively independently.
The diameter of described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) is 40mm～300mm, screw rod effective L D ratio 12～72, screw rod centre-to-centre spacing 40mm～300mm, axocoel diameter 10mm～160mm, depth of thread engagement 10mm～50mm, pitch 5mm～400mm.
The setting of temperature, thread density and length by above-mentioned each mixer, along flow direction of material, material mixes in the middle extruding of being undertaken in various degree by the mixer of different thread density of first screw rod (41) and second screw rod (42), first screw rod (41) and the 3rd screw rod (43), and be heated to different temperature, thereby reach abundant mixing and be heated to suitable temperature.
Below further set forth, material pushes the process of mixing in the extruder of three-screw-rod structure.
Shown in Figure 1 is a kind of extruder common in the reconstituted rice for preparing, and comprises feed system 1, extrusion chamber 2 and discharge system 3.Wherein feed system 1 further comprises material stock device 11 and charging aperture 12, and extrusion chamber 2 further comprises chamber shell 21 and cavity 22, and discharge system 3 further comprises discharging opening 31, cutter 32 and mould 33.
As shown in Figure 2, in described cavity 22, be provided with 3 screw rods, i.e. first screw rod (41), second screw rod (42) and the 3rd screw rod (43).Material falls from material stock device 11 as shown in Figure 3, enters in the cavity 22 by charging aperture 12, enters subsequently in the hole between second screw rod 42 and the 3rd screw rod 43.First screw rod 41 rotates counterclockwise along pointer rotation, second screw rod 43, the engagement of the two is rotated, make material be mixed, and subsequently under the rotation of first screw rod 41 and the 3rd screw rod 43 drives, forms 2 material flow 92 and 93 mobile by first screw rod 41 and the extruding of the 3rd screw rod 43.Wherein material flow 92 rotates counterclockwise along direction 83 with the 3rd screw rod 43, and is taken back the top formation material flow 94 of the 3rd screw rod 43.Material flow 93 clockwise rotates along direction 91 with first screw rod 41, and is taken back formation material flow 95.The material flow 95 that first screw rod 81 brings is mixed mutually with the material flow 96 that second screw rod 42 brings, and first screw rod 81 and 82 extruding of changeing of second screw rod are mixed, and subsequently under the rotation of first screw rod 41 and second screw rod 42 drives, form 2 material flow 97 and 98.Wherein material flow 97 and material flow 94, mix together with the material flow 91 that enters from charging aperture, and first screw rod 41 and 43 extruding of changeing of the 3rd screw rod are mixed, and subsequently under the rotation of first screw rod 41 and the 3rd screw rod 43 drives, form 2 material flow 92 and 93 and flow, circulation repeatedly.And material flow 98 rotates counterclockwise along direction 82 under the drive of second screw rod 42, forms material flow 96, and mixes with material flow 95 once more, pushes mixing circulation.
According to above-mentioned description for flow direction of material in the three-screw-rod structure, three-screw-rod structure is different from and the double-screw structure part is:
1, in double-screw structure, about the material flow that enters is divided into two strands, at thereafter twin-screw to turning in the journey, though these two bursts of material flow are extruded mixing, but have only a part of material seldom to import one of right side from one of left side, equally, one of right side also has only seldom a part to import one of left side, and promptly the material exchange between two bursts of material flow is less;
2, in three-screw-rod structure, the material flow that enters is at first under the extruding of first screw rod 41 and the 3rd screw rod 43 mixes, be divided into two bursts of material flow 93 and 92, wherein material flow 92 becomes one to flow back to separately, yet material flow 93 forms material flow 95 and another burst material flow 96 is mixed, and mix through the extruding of first screw rod 41 and second screw rod 42, form two bursts of material flow 97 and 98, wherein material flow 98 becomes one to flow back to separately, yet material flow 97,94 and 91 mix once more, and circulation, this has just caused in the three-screw-rod structure, logistics no longer only is divided into and exchanges less two strands each other, but individual material flow constantly mixed by shunting, continuous exchange material between each material flow.
From above-mentioned analysis as can be known, utilize three-screw-rod structure to exchange so that the material quilt that mixes is constantly mutual, each material to be mixed constantly is reallocated, thereby make material mix more, and remedied the difference that the material between two strands of materials in mixing is formed, each the material component content that makes the discharging opening place extrude is identical, avoids difference.
As shown in Figure 6, connect external circuitry, to heating system 7 energisings, by being positioned at each electric wire and the circuit of path 70 inside, heating resistor 73,74a, 74b, 75a, 75b and 76 energising heating to being positioned at first mixer 53, the second mixer 54a, the second mixer 54b, the 3rd mixer 55a, the 3rd mixer 55b and discharging section 56 inside respectively, and to each corresponding mixer heat temperature raising.
At first material enters first mixer 53 that is adjacent from charging aperture 12, and intermeshing first mixer 53 under changeing, be extruded mixing.In order to make that the material that enters can be mixed fast fully, 53 designs of first mixer had bigger thread density, to strengthen shearing force, simultaneously excessive by gelatine under heating condition for fear of material, only tentatively heat material this moment, so the temperature of design first mixer 53 is lower.
Material enters second mixer, 54 zones subsequently, higher in temperature, thread density is less, 2 the second mixer 54a place extruding that length is long mix, in this process, material can carry out sufficient heat exchange on long screw rod, by screw rod heating and further extruding mixing, this moment is owing to can bring the gelatine of material in the heating process, so the second lower screw rod of design density is so that material gas inside and steam etc. can spread out, take a breath, thereby avoid material inside to have more gas, too fast in the diffusion of exit gas, bring and make breaking and crackle of particle.Material is mixed by THE ADIABATIC SHEAR IN by the higher adiabatic distance piece of thread density 51 subsequently, and transmitted rearward, 2 the second mixer 54b extruding higher by temperature mix, further by gelatine, mixed by higher adiabatic distance piece 51 THE ADIABATIC SHEAR IN of thread density once more, and transmitted rearward.
Material with uniform temperature and gelatine degree enters the 3rd mixer 55 zones, at the temperature height, thread density is big, 2 the 3rd short mixer 55a place extruding of length mix, at this moment, heating-up temperature is the highest, so that material carries out further gelatine, while thread density maximum, make material by rapid and sufficient shear-mixed, make mixing of materials even, because this moment, the gelatine degree was bigger, material viscosity increases, so design the 3rd short mixer 55 to avoid heat time heating time long, gelatine is excessive, and makes material the 3rd mixer 55 that can speed away avoid sticking glutinous.Material is sent into next by adiabatic distance piece 51 and is organized the 3rd mixer 55b subsequently, and its temperature is lower, thereby makes material by further extruding mixing once more, and progressively cooling.
The material that is extruded is under the squeezing action of screw rod, in the mode of helix, move along Fig. 1 and flow direction of material shown in Figure 4, from the front end terminad motion of first screw rod 41 and second screw rod, last, material is admitted to discharging section 56, is transferred into discharging opening 31 after the extruding a little.Material is extruded into the mould 33 in exit from discharging opening 31, from extruded hole extruding place of this mould 33, and is cut cutter 32 and cuts rapidly, forms particle.
By above-mentioned screw-rod structure and extrusion process, material is adequately compressed mixing, and is heated to required gelatine degree as required.The heating-up temperature of each mixer is independent controlled, can be adjusted according to actual needs.
Technical parameter in the said process is as follows:
Embodiment two:
Adopt following technical parameter to improve embodiment one:
Embodiment three:
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Embodiment four:
Adopt following technical parameter to improve embodiment one:
Embodiment five:
Adopt following technical parameter to improve embodiment one:
Embodiment six:
Adopt following technical parameter to improve embodiment one:
Embodiment seven:
Adopt following technical parameter to improve embodiment one:
Embodiment eight:
Adopt following technical parameter to improve embodiment one:
Embodiment nine:
Adopt following technical parameter to improve embodiment one:
Embodiment ten:
Adopt following technical parameter to improve embodiment one:
Foregoing is exemplifying of specific embodiment of the utility model, for the wherein not equipment of detailed description and structure, should be understood to take existing common apparatus in this area and universal method to be implemented.
Claims (10)
1. a three-screw-rod structure of extruder is characterized in that, comprises first screw rod (41), second screw rod (42) and the 3rd screw rod (43);
Described first screw rod (41) and second screw rod (42) are meshing with each other to changeing, and described first screw rod and the 3rd screw rod (43) are meshing with each other to changeing;
Angle α between the circle center line connecting of the circle center line connecting of described first screw rod (41) and second screw rod (42) and first screw rod (41) and the 3rd screw rod (43) is 70 °～100 °;
Described first screw rod (41) and second screw rod (42) are tangent, and first screw rod (41) and the 3rd screw rod (43) are tangent;
Described first screw rod (41) is the active screw rod, second screw rod (42) and the driven screw rod of the 3rd screw rod (43), and perhaps the three is the active screw rod;
Described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) all have following structure:
At least 2 linkage sections (51);
At least 2 adiabatic distance pieces (52);
At least 1 first mixer (53);
At least 1 second mixer (54);
At least 1 the 3rd mixer (55);
1 discharging section (56);
Each corresponding linkage section (51) of described first screw rod (41) and second screw rod (42), each corresponding adiabatic distance piece (52), each corresponding first mixer (53), each corresponding second mixer (54), each corresponding the 3rd mixer (55), each discharging section (56) are meshing with each other;
Each corresponding linkage section (51) of described first screw rod (41) and the 3rd screw rod (43), each corresponding adiabatic distance piece (52), each corresponding first mixer (53), each corresponding second mixer (54), each corresponding the 3rd mixer (55), each discharging section (56) are meshing with each other;
Described adiabatic distance piece (52) is the helicitic texture of being made by heat-insulating material, and described first mixer (53), second mixer (54), the 3rd mixer (55) and discharging section (56) are the helicitic textures of being made by Heat Conduction Material;
Described discharging section (56) is the helicitic texture made by Heat Conduction Material, be positioned at the terminal of screw rod and link to each other with 1 linkage section (51), and described discharging section (56) is tapered from the position terminad that links to each other with linkage section (51);
Described each linkage section (51), adiabatic distance piece (52), first mixer (53), second mixer (54), the 3rd mixer (55) and the coaxial and equal diameters of discharging section (56).
2. three-screw-rod structure as claimed in claim 1, it is characterized in that, described each linkage section (51), adiabatic distance piece (52), first mixer (53), second mixer (54), the 3rd mixer (55) and discharging section (56) are hollow structure, and its inside has respectively and is interconnected and coaxial axocoel (61), axocoel (62), axocoel (63), axocoel (64), axocoel (65) and axocoel (66);
The axocoel (61) of described linkage section (51) and adiabatic distance piece (52) and the equal diameters of (62);
The equal diameters of the axocoel (63) of described first mixer (53), second mixer (54), the 3rd mixer (55) and discharging section (56), (64), (65) and (66);
The diameter of described axocoel (61) and (62) is less than the diameter of axocoel (63), (64), (65) and (66).
3. three-screw-rod structure as claimed in claim 2 is characterized in that, describedly is provided with heating system (7) in each axocoel inside; Described heating system (7) comprises the path (70) that is positioned at each axocoel axle center and passes each axocoel successively, described path (70) is the hollow structure of being made by adiabatic insulating materials, its inside is provided with the many groups heater circuit that links to each other with the external world, is used for to being positioned at path (70) outside and each heating resistor power supply interconnective with it;
Described heating resistor comprises heating resistor (73), (74), (75) and (76) that lay respectively at first mixer (53), second mixer (54), the 3rd mixer (55) and discharging section (56) inside.
4. three-screw-rod structure as claimed in claim 3, it is characterized in that, heat first mixer (53), second mixer (54), the 3rd mixer (55) and discharging section (56) respectively under the control of the many groups heater circuit that links to each other with the external world relatively independently described each heating resistor (73), (74), (75) and (76);
The temperature of described first mixer (53) is lower than the temperature of second mixer (54), and the temperature of described second mixer (54) is lower than the temperature of the 3rd mixer (55).
5. three-screw-rod structure as claimed in claim 1 is characterized in that, the length of described second mixer (54) is greater than the length of first mixer (53) and the 3rd mixer (55);
Described discharging section (56) is a frustum cone structure, and its diameter reduces gradually from the position terminad that links to each other with linkage section (51), and the bus of its frustum cone structure and axial angle β are 15 °～35 °
6. three-screw-rod structure as claimed in claim 1 is characterized in that, the thread density of described second mixer (54) is less than the thread density of first mixer (53);
The thread density of described first mixer (53) is less than the thread density of the 3rd mixer (55);
The thread density of described discharging section (56) equates with the thread density of the 3rd mixer (55).
7. three-screw-rod structure as claimed in claim 1 is characterized in that, described linkage section (51) further comprises first gear (511) and second gear (512);
Described first gear (511) and second gear (512) have 6～16 teeth;
Interlaced 11.25 °～30 ° of described first gear (511) and second gear (512);
Corresponding first gear of each of described first screw rod (41) and second screw rod (42) (511) is meshing with each other and each corresponding second gear (522) is meshing with each other;
Corresponding first gear of each of described first screw rod (41) and the 3rd screw rod (43) (511) is meshing with each other and each corresponding second gear (522) is meshing with each other.
8. three-screw-rod structure as claimed in claim 7 is characterized in that, described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) further comprise second mixer (54) that at least 2 length are identical with thread density, temperature is different;
Described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) further comprise the 3rd mixer (55) that at least 2 length are identical with thread density, temperature is different;
The temperature of described each second mixer (54) increases successively along flow direction of material, and the temperature of described each the 3rd mixer (55) reduces successively along flow direction of material;
The temperature of described discharging section (56) is lower than the temperature of adjacent the 3rd mixer (55).
9. three-screw-rod structure as claimed in claim 8, it is characterized in that, along flow direction of material, described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) have interconnective first mixer (53), adiabatic distance piece (52), linkage section (51), second mixer (54a), adiabatic distance piece (52), linkage section (51), second mixer (54b), adiabatic distance piece (52), linkage section (51), the 3rd mixer (55a), adiabatic distance piece (52), the 3rd mixer (55b), linkage section (51), discharging section (56) respectively successively;
Described first screw rod (41) and second screw rod (42) are to commentaries on classics, and first screw rod (41) edge clockwise rotates, second screw rod (42) edge rotates counterclockwise;
Described first screw rod (41) and the 3rd screw rod (43) are to commentaries on classics, and first screw rod (41) rotates along clockwise direction, the 3rd screw rod (43) rotates in the counterclockwise direction.
10. three-screw-rod structure as claimed in claim 9, the diameter that it is characterized in that described first screw rod (41), second screw rod (42) and the 3rd screw rod (43) are 40mm～300mm, screw rod effective L D ratio 12～92, screw rod centre-to-centre spacing 40mm～300mm, axocoel diameter 10mm～160mm, depth of thread engagement 10mm～50mm, pitch 5mm～400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200718632U CN201550585U (en) | 2009-05-08 | 2009-05-08 | Triple screw rod structure of extrusion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200718632U CN201550585U (en) | 2009-05-08 | 2009-05-08 | Triple screw rod structure of extrusion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201550585U true CN201550585U (en) | 2010-08-18 |
Family
ID=42610257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200718632U Expired - Fee Related CN201550585U (en) | 2009-05-08 | 2009-05-08 | Triple screw rod structure of extrusion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201550585U (en) |
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2009
- 2009-05-08 CN CN2009200718632U patent/CN201550585U/en not_active Expired - Fee Related
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Granted publication date: 20100818 Termination date: 20110508 |