CN110916235A

CN110916235A - Double-shaft bulking machine and working method thereof

Info

Publication number: CN110916235A
Application number: CN201911307080.4A
Authority: CN
Inventors: 朱义斌; 李付春; 刘华江
Original assignee: Jiaxing Yang Yang Machinery Co Ltd
Current assignee: Jiaxing Yang Yang Machinery Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-03-27

Abstract

The invention discloses a double-shaft bulking machine and a working method thereof, and the double-shaft bulking machine comprises an outer pipe, wherein a material inlet is arranged on the pipe wall of the outer pipe, a lining is arranged in the outer pipe, a notch is reserved on the outer wall of the lining, two conical inner pipes which are arranged along the length direction of the lining and are provided with openings at the front and the back are arranged in the lining, two inner cavities are staggered and communicated along the radial direction, the opening at the front end of each conical inner pipe is large, the opening at the tail end of each conical inner pipe is small, an included angle is formed between the central axes of the two conical inner pipes, a conical screw rod is respectively arranged in each inner cavity in a penetrating manner, spiral. According to the double-shaft bulking machine, the conical screw is prevented from jumping or vibrating through the arranged lining and the conical inner pipe, so that energy is concentrated in the conical inner pipe, puffed materials can be extruded out of finer template holes, a finer uniform feed processing effect is achieved, the occupied area is small, and the smaller development of the bulking machine structure is facilitated.

Description

Double-shaft bulking machine and working method thereof

Technical Field

The invention relates to the field of bulking machines, in particular to a double-shaft bulking machine and a working method thereof.

Background

The puffing machine is a device for processing puffed food or puffed feed, and has the main working principle that mechanical energy is converted into heat energy, the food or feed is extruded to be cooked by the heat energy generated when the machine rotates, and the puffed food or feed has the most obvious characteristic of larger volume.

During the expansion process of the feed, under the action of certain temperature, humidity and pressure, starch is gelatinized and fiber is softened, most harmful bacteria are killed, and the digestion utilization rate of the feed is improved; the puffed feed is loose and porous, can float in water for a long time, and is suitable for middle and upper layer fishes.

In aquatic feed, the feed is puffed by a feed puffing machine, the feed puffing machine is generally a single-screw puffing machine, but the size of the puffed feed of the single-screw puffing machine is not uniform enough, so that some manufacturers develop double-screw puffing machines.

For example, patent No. CN201710237467.1 proposes "a double-cone adjustable-speed screw extruder", which comprises a feeding part 1, a connecting part 2 and a mixing and compressing part 3. the feeding part 1 comprises a hopper 10, a feeding screw 5, a first-stage screw cylinder 6 and a fixed ring sleeve 7. the feeding screw 5 comprises a feeding zone 5.1, a compressing zone 5.2, a melting zone 5.3 and a driving head 4. the mixing and compressing part 3 comprises two conical screws 31 meshed with each other, the conical screws 31 comprise a first conical screw 34 and a second conical screw 35, the conical screws 31 comprise a screw part 31.1 and a driving shaft part 31.2, the driving shaft parts 31.2 of the first conical screw 34 and the second conical screw 35 are symmetrically arranged on both sides of the driving axis of the feeding screw 5, and the driving shaft parts 31.2 of the first conical screw 34 and the driving shaft parts 31.2 of the second conical screw 35 have a double cone α, and a double cone α is 20 degrees.

Because the double cone included angle α is greater than 3 °, the lengths of the two conical screws 31 cannot be long enough, so that the feeding section is not long enough relatively, the processing efficiency is not high enough, and the processing precision is not high enough.

In addition, the bipyramid adjustable speed screw extruder in this patent sets up feed screw 5 and feed screw 5 along length direction, makes its area in length direction great like this, is unfavorable for the less development of bulking machine structure.

Disclosure of Invention

The invention overcomes the defects in the prior art and provides a double-shaft bulking machine to solve the problems; specifically, the double-shaft bulking machine is characterized in that a lining is arranged in an outer pipe, a conical inner pipe is processed in the lining and matched with a conical screw, the lining plays a role in positioning, the conical screw rotates in the conical inner pipe to push and stir materials, and the conical screw is prevented from jumping or vibrating under the action of strong thrust and counter-thrust, so that energy is concentrated in the conical inner pipe; the pushing pressure is increased more and more when the end of the conical inner tube is reached, so that the puffed material can be extruded into smaller template holes, and the processing effect of smaller uniform feed is achieved.

In addition, the angle between the two conical screws of the double-shaft bulking machine can be lower than 3 degrees, and the lengths of the two conical screws are prolonged, so that the processing efficiency and the processing precision are improved.

The double-shaft bulking machine has small occupied area and is beneficial to the smaller development of the bulking machine structure.

The technical scheme of the invention is realized as follows:

the utility model provides a biax bulking machine, includes the outer tube, is equipped with the material entry on the outer tube pipe wall, is equipped with the bush in the outer tube, and the bush sets up along outer tube length direction, leaves on the bush outer wall with the communicating breach of material entry, has seted up two in the bush along the equal open-ended toper inner tube around the setting of bush length direction, two toper inner tubes are crisscross and communicate along radial direction, the front end opening of toper inner tube big, terminal opening is little, form the contained angle between the central axis of two toper inner tubes, respectively wear to be equipped with a conical screw in two toper inner tubes, around having helical blade, the crisscross setting of helical blade on two conical screw in the periphery of conical. According to the double-shaft bulking machine, the bushing is arranged in the outer pipe, the conical inner pipe is processed in the bushing and matched with the conical screw, the bushing plays a positioning role, the conical screw rotates in the conical inner pipe to push and stir materials, and the conical screw is prevented from jumping or vibrating under the action of strong thrust and counter-thrust, so that energy is concentrated in the conical inner pipe; the pushing pressure is increased more and more when the end of the conical inner tube is reached, so that the puffed material can be extruded into smaller template holes, and the processing effect of smaller uniform feed is achieved.

Preferably, the included angle between the central axes of the two conical inner pipes is 1-2.5 degrees, and the length of the lining is 1.1-1.5 m. The angle between the two conical screws can be lower than 3 degrees, and the lengths of the two conical screws are prolonged, so that the processing efficiency and the processing precision are improved; furthermore, a small included angle is formed between the central axes of the two conical inner pipes, the included angle is matched with the shape of the conical screw and the matching relation between the two conical screws, the diameter of the conical screw is gradually reduced from the front end to the tail end, the two conical screws are kept close to each other through the angle arrangement, and meanwhile the conical inner pipes wrap the conical screw and the helical blades from front to back.

Preferably, the bushing is formed by processing the bushing in sections along the length direction of the bushing and is made of alloy materials, and two adjacent sections are spliced and then welded. The alloy material is more wear-resistant, and the service durability is ensured; and the bush is formed by sectional processing, so that the processing precision can be ensured.

Preferably, the helical blade and the conical screw are integrally formed. The conical screw rod is thinner near the tail end than the front end, and the split machining difficulty is higher; by adopting the integrated processing mode, the processing precision is ensured, the processing difficulty is reduced, the helical blades can be accurately matched, and the processing quality is ensured.

Preferably, the head part of the conical screw rod, which is exposed out of the bushing, is connected with a driving mechanism, the driving mechanism comprises a main motor and a reduction gearbox, an input shaft, a first output shaft and a second output shaft are arranged in the reduction gearbox, and the input shaft, the first output shaft and the second output shaft are rotationally connected with the reduction gearbox; the first output shaft and the second output shaft are arranged side by side, the input shaft is fixedly sleeved with a main transmission gear, the first output shaft is fixedly sleeved with a deceleration big gear, the deceleration big gear is coaxially and fixedly connected with a first transmission gear, the input shaft is coaxially and fixedly connected with a second transmission gear, a transition gear is respectively arranged above and below the space between the first transmission gear and the second transmission gear, and the two transition gears are respectively meshed with the first transmission gear and the second transmission gear; the main transmission gear, the transition gear, the first transmission gear and the second transmission gear are all helical gears. The input shaft is connected with a main motor to be used as main power input, power is transmitted to the first output shaft through a main transmission gear, and the main transmission gear is large in diameter and plays a role in speed reduction; the first transmission gear and the second transmission gear are respectively meshed with one transition gear up and down synchronously, so that the first output shaft and the second output shaft can rotate synchronously and in the same direction, and meanwhile, the two transition gears are arranged up and down due to the existence of reverse thrust in the working process of the conical screw, so that the first transmission gear and the second transmission gear can be stabilized, and the vibration of the first transmission gear and the second transmission gear is prevented.

Preferably, a rotating support part is formed at the front end of the outer tube, two circular openings are formed on the rotating support part, the head of the conical screw rod is exposed out of the circular openings, an annular sealing sleeve made of metal is sleeved on the head of the conical screw rod, and the annular sealing sleeve is arranged in the circular openings; the annular sealing sleeve comprises an outer ring and an inner ring, a plurality of filling holes are distributed on the annular sealing sleeve along the circumferential direction, the filling holes are arranged between the inner ring and the outer ring and are communicated with the outer ring and the inner ring, and wear-resistant fillers are arranged in the filling holes. The annular sealing sleeve prevents the material from seeping out of the circular opening from the head of the conical screw rod, and has two functions, one of which is the function of a bearing seat, namely the function of rotatably supporting the head of the conical screw rod; the second is to play the sealed effect, because of under the high temperature environment, metal is not wear-resisting, can produce wearing and tearing, nevertheless because of having the existence of wear-resisting filler for it can reduce the friction loss that metal produced under high temperature, makes up the not enough that single metal seal cover exists.

Preferably, the wear-resistant filler is a graphite material. The graphite has the characteristic of abrasion resistance at high temperature, and plays a role in lubrication, so that the head of the conical screw rod can rotate more freely.

Preferably, a step is arranged in the circular opening, and the annular sealing sleeve is inwards abutted to the step. Therefore, the annular sealing sleeve can be prevented from running into the inner tube, and the safety protection effect is achieved.

Based on the working method of the double-shaft bulking machine, a template with a die hole with the diameter of 0.3-2mm is arranged at the tail end of the conical inner tube; during operation, put into the material of treating the stirring in the breach, two conical screw rod syntropys are with the material stirring and carry forward in the toper inner tube of bush, finally send out from the less one end of toper inner tube diameter, and the material is extruded from the nib under the effect of huge conveying pressure finally.

The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:

according to the double-shaft bulking machine, the reasonable lining and the conical inner pipe are arranged, so that the conical screw is prevented from jumping or vibrating, energy is concentrated in the conical inner pipe, and therefore bulked materials can be extruded out of finer template holes, and a finer and uniform feed processing effect is achieved.

Drawings

FIG. 1 is a front view of a twin screw bulking machine in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic perspective view of a dual-spindle puffing machine according to an embodiment of the present invention, with a conical screw hidden and partially cut away;

FIG. 4 is a schematic perspective view of a twin screw extruder according to an embodiment of the present invention, with the conical screw hidden;

FIG. 5 is a partially cut-away perspective view of a twin-screw puffing machine according to an embodiment of the present invention;

FIG. 6 is a front view of a conical screw in an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a twin-shaft bulking machine in an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a conical screw of a twin-screw puffing machine according to an embodiment of the present invention after being connected to a driving machine;

FIG. 9 is an enlarged view of portion a of FIG. 8;

figure 10 is a front view of an annular gland of an embodiment of the present invention;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 10;

FIG. 12 is a schematic perspective view of an annular gland in an embodiment of the present invention;

FIG. 13 is a front view of the reduction gearbox in an embodiment of the present invention;

FIG. 14 is a cross-sectional view taken along plane C-C of FIG. 13;

FIG. 15 is a schematic perspective view of the reduction gearbox of the present invention after the parts are assembled;

fig. 16 is a schematic perspective view of the reduction gearbox of the embodiment of the invention after the structures of the parts are separated.

The figures are numbered: an outer tube 1; a material inlet 2; a rotation support portion 3; a circular opening 4; a step 5; a bushing 6; a notch 7; a tapered inner tube 8; an inner cavity 9; a conical screw 10; a head portion 10 a; a tail portion 10 b; a helical blade 11; an annular gland 12; an outer ring 12 a; an inner ring 12 b; a filler hole 13; a drive mechanism 15; a main motor 16; a reduction gearbox 17; an input shaft 18; a first output shaft 19; a second output shaft 20; a main transmission gear 21; a reduction gearwheel 22; a first transmission gear 23; a second transmission gear 24; a transition gear 25; a coupling 26; a material outlet 27.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more than one unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiment of the invention is as follows:

example (b): as shown in fig. 1-16, the present invention provides a double-shaft bulking machine, which comprises an outer tube 1, a material inlet 2 is arranged on the tube wall of the outer tube 1, a rotating support part 3 is formed at the front end of the outer tube 1, two circular openings 4 are arranged on the rotating support part 3, and a step 5 is arranged in the circular openings 4.

As shown in fig. 1-4, a bushing 6 is arranged in the outer tube 1, and the bushing 6 is arranged along the length direction of the outer tube 1; specifically, the bushing 6 is formed by processing the bushing 6 in a segmented mode along the length direction of the bushing, is made of wear-resistant alloy materials, and is welded after two adjacent segments are spliced.

A notch 7 communicated with the material inlet 2 is reserved on the outer wall of the lining 6, and when materials enter from the material inlet 2, the materials enter into the lining 6 from the notch 7.

Two conical inner tubes 8 which are arranged along the length direction of the lining 6 and are open at the front and the rear are arranged in the lining 6, inner cavities 9 of the two conical inner tubes 8 are staggered and communicated along the radial direction, the front end opening of each conical inner tube 8 is large, the tail end opening of each conical inner tube 8 is small, an included angle of 2-5 degrees is formed between the central axes of the two conical inner tubes 8, and the included angle is preferably 2.5 degrees.

Two inner cavities 9 are respectively provided with a conical screw 10 in a penetrating way, the conical screw 10 is thinner near the tail end and thicker near the front end, helical blades 11 which are integrally formed with the conical screw 10 are wound on the periphery of the conical screw 10, the helical blades 11 on the two conical screws 10 are arranged in a staggered way, and the conical inner pipe 8 wraps the conical screw 10 and the helical blades 11 from front to back.

The two conical screws 10 respectively comprise a head part 10a and a tail part 10b, the head parts 10a of the two conical screws 10 are exposed out of the two circular openings 4 on the rotating support part 3, the head parts 10a of the two conical screws 10 are respectively sleeved with an annular sealing sleeve 12 made of metal, and the annular sealing sleeves 12 inwards abut against the step 5; the annular sealing sleeve 12 comprises an outer ring 12a and an inner ring 12b, a plurality of filling holes 13 which are arranged between the inner ring 12a and the outer ring 12a and communicated with the outer ring 12a and the inner ring 12b are uniformly distributed on the annular sealing sleeve 12 along the circumferential direction, wear-resistant fillers are arranged in the filling holes 13, and the wear-resistant fillers are made of graphite materials.

The head part 10a of the conical screw 10 exposed out of the bushing 6 is connected with a driving mechanism 15, as shown in fig. 8, 9 and 13-16, the driving mechanism 15 comprises a main motor 16 and a reduction gearbox 17, an input shaft 18, a first output shaft 19 and a second output shaft 20 are arranged in the reduction gearbox 17, and the input shaft 18, the first output shaft 19 and the second output shaft 20 are all rotationally connected with the reduction gearbox 17; wherein the first output shaft 19 and the second output shaft 20 are both arranged side by side.

A main transmission gear 21 is fixedly sleeved on the input shaft 18, and the diameter of the main transmission gear 21 is larger, so that a speed reduction effect is achieved; a deceleration big gear 22 is fixedly sleeved on the first output shaft 19, a first transmission gear 23 is coaxially and fixedly connected with the deceleration big gear 22, a second transmission gear 24 is coaxially and fixedly connected with the second output shaft 20, a transition gear 25 is respectively arranged above and below the space between the first transmission gear 23 and the second transmission gear 24, and the two transition gears 25 are respectively meshed with the first transmission gear 23 and the second transmission gear 24; the main transmission gear 21, the transition gear 25, the first transmission gear 23 and the second transmission gear 24 are all helical gears.

The reduction gearbox comprises an upper part, a middle part and a lower part which are stacked up and down and are respectively an upper box body 28, a middle box body 29 and a lower box body 30, a transition gear below the first transmission gear 23 and the second transmission gear 24 is arranged between the middle box body 29 and the lower box body 30, an input shaft 18, a first output shaft 19 and a second output shaft 20 are arranged on the middle box body 29, and a transition gear above the first transmission gear 23 and the second transmission gear 24 is arranged between the middle box body 29 and the upper box body 28. Specifically, the middle box 29 is enclosed by a surrounding plate 291, the middle box 29 is hollow, a vertical partition plate 292 is longitudinally arranged in the middle box 29, a space 293 for accommodating the main transmission gear 21, the first transmission gear 23 and the second transmission gear 24 is formed between the vertical partition plate 292 and the surrounding plate 291, a shaft support portion 294 is formed by the vertical partition plate 292 and the upper end of the surrounding plate 291 in a recessed manner, and the input shaft 18, the first output shaft 19 and the second output shaft 20 are respectively supported by the corresponding shaft support portions 294.

The transition gear 25 above the first transmission gear 23 and the second transmission gear 24 is sleeved on the upper support shaft 31, and the upper support shaft 31 is supported by the upper box 28. The lower transition gear 25 between the first transmission gear 23 and the second transmission gear 24 is sleeved on the lower support shaft 32, and the lower support shaft 32 is supported by the lower box body 30.

When the material processing device is used, a material to be processed is poured into the material inlet 2, the main motor 16 is controlled to work, the input shaft 18 is connected with the main motor 16 to be used as main power input, and power is transmitted to the first output shaft 19 through the main transmission gear 21; the first and second output shafts 20 synchronously rotate in the same direction due to the upper and lower synchronous meshing of the first and second transmission gears 24 with the transition gear 25, and the first and second output shafts 20 are respectively connected with the heads 10a of the two conical screws 10 through the coupling 26, so that the two conical screws 10 are driven to rotate in the conical inner tube 8, the helical blades 11 push and stir the material, and the processed material is output from the material outlet 27; because the setting of structure makes the end of toper inner tube 8 more and more, helical blade 11's propelling movement pressure is bigger and bigger to make puffed material extrude more tiny template punchhole, reach the processing effect of more tiny even fodder.

Claims

1. A double-shaft bulking machine is characterized in that: including the outer tube, be equipped with the material entry on the outer tube pipe wall, be equipped with the bush in the outer tube, the bush sets up along outer tube length direction, leaves on the bush outer wall with the communicating breach of material entry, has seted up two in the bush along the equal open-ended toper inner tube around the setting of bush length direction, two toper inner tubes are crisscross and communicate along radial direction, the front end opening of toper inner tube big, terminal opening little, form the contained angle between the central axis of two toper inner tubes, respectively wear to be equipped with a conical screw in two toper inner tubes, around having helical blade, the last helical blade of two conical screw is crisscross to be set up in the periphery of conical screw.

2. The twin-shaft bulking machine of claim 1, wherein: the included angle between the central axes of the two conical inner pipes is 1-2.5 degrees, and the length of the bushing is 1.1-1.5 m.

3. The twin-shaft bulking machine of claim 1, wherein: the bushing is formed by processing the bushing in a segmented mode along the length direction of the bushing and is made of alloy materials, and two adjacent segments are spliced and then welded.

4. The twin-shaft bulking machine of claim 1, wherein: the helical blade and the conical screw are integrally processed and formed.

5. The twin-shaft bulking machine of claim 1, wherein: the head part of the conical screw rod, which is exposed out of the bushing, is connected with a driving mechanism, the driving mechanism comprises a main motor and a reduction gearbox, an input shaft, a first output shaft and a second output shaft are arranged in the reduction gearbox, and the input shaft, the first output shaft and the second output shaft are rotationally connected with the reduction gearbox; the first output shaft and the second output shaft are arranged side by side, the input shaft is fixedly sleeved with a main transmission gear, the first output shaft is fixedly sleeved with a deceleration big gear, the deceleration big gear is coaxially and fixedly connected with a first transmission gear, the input shaft is coaxially and fixedly connected with a second transmission gear, a transition gear is respectively arranged above and below the space between the first transmission gear and the second transmission gear, and the two transition gears are respectively meshed with the first transmission gear and the second transmission gear; the main transmission gear, the transition gear, the first transmission gear and the second transmission gear are all helical gears.

6. The twin-shaft bulking machine of claim 1, wherein: a rotary supporting part is formed at the front end of the outer pipe, two round openings are arranged on the rotary supporting part, the head of the conical screw rod is exposed out of the round openings, an annular sealing sleeve made of metal is sleeved on the head of the conical screw rod, and the annular sealing sleeve is arranged in the round openings; the annular sealing sleeve comprises an outer ring and an inner ring, a plurality of filling holes are distributed on the annular sealing sleeve along the circumferential direction, the filling holes are arranged between the inner ring and the outer ring and are communicated with the outer ring and the inner ring, and wear-resistant fillers are arranged in the filling holes.

7. The twin-shaft bulking machine of claim 6, wherein: the wear-resistant filler is a graphite material.

8. The twin-shaft bulking machine of claim 6, wherein: a step is arranged in the circular opening, and the annular sealing sleeve is inwards abutted to the step.

9. The working method of the double-shaft bulking machine according to any one of claims 1 to 8, which comprises the following steps: a template with a die hole with the diameter of 0.3-2mm is arranged at the tail end of the conical inner tube; during operation, put into the material of treating the stirring in the breach, two conical screw rod syntropys are with the material stirring and carry forward in the toper inner tube of bush, finally send out from the less one end of toper inner tube diameter, and the material is extruded from the nib under the effect of huge conveying pressure finally.