CN212046106U - Double-screw feeding and single-screw discharging extrusion device - Google Patents
Double-screw feeding and single-screw discharging extrusion device Download PDFInfo
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- CN212046106U CN212046106U CN202020259402.4U CN202020259402U CN212046106U CN 212046106 U CN212046106 U CN 212046106U CN 202020259402 U CN202020259402 U CN 202020259402U CN 212046106 U CN212046106 U CN 212046106U
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Abstract
The utility model discloses an extrusion device for double-screw feeding and single-screw discharging, which comprises a frame, a discharging device, a feeding bin, a gear transmission case and a driving device, wherein the discharging device, the feeding bin, the gear transmission case and the driving device are arranged on the frame; the discharging device comprises a shell, a long screw and a short screw; the shell comprises a long screw cavity and a short screw cavity, the long screw cavity and the short screw cavity are horizontally arranged in parallel, and the junction of the long screw cavity and the short screw cavity is communicated to form a material through hole; the cavity openings at one side of the long screw cavity and the short screw cavity are respectively provided with a partition plate; a strip discharging mould is arranged on the other side cavity opening of the long screw cavity, and a long screw positioning sleeve is arranged at the center of the inner side of the strip discharging mould; an oval gland is arranged on the other side cavity opening of the short screw cavity; the inner side of the gland is provided with a short screw rod positioning sleeve. The utility model discloses a double screw feeding, the mode of extruding of the single screw ejection of compact, the effectual single screw of having avoided extrudes the problem that efficiency is lower and many ejection of compact synchronizations of double screw are not good to some material.
Description
Technical Field
The utility model relates to an extrusion equipment technical field, more specifically the extrusion device that relates to a double screw feeding single screw rod ejection of compact that says so.
Background
In the industrial production of petroleum, chemical industry, plastics, food, pharmacy and the like, continuous operations such as mixing, stirring, plasticizing and the like of high-viscosity and ultrahigh-viscosity materials are often involved, and a screw extruder is an important device for realizing the functions. The double-screw extruder is obviously superior to a single-screw extruder in the aspects of mixing property, extrusion effect, yield and the like, well solves the problems of stirring, mixing, plasticizing and the like of high-viscosity materials, and has great development potential.
The existing extrusion device for preparing the traditional Chinese medicine pills has three structures, the first structure adopts a double-pressure plate material pressing and single-screw discharging device; the second type adopts a device for pressing by double pressing plates and discharging by double screws; the third is a device adopting double-screw feeding and double-screw discharging; at present, the first extrusion device has lower extrusion efficiency for materials with poor viscosity, such as water pills and the like; although the second extrusion device and the third extrusion device have high extrusion efficiency, when a plurality of extrusion devices are used for extruding, the extruded material strips have poor synchronism, and are not suitable for a plurality of traditional Chinese medicine pelleting machines and other equipment with high synchronous requirements.
Therefore, how to provide an extrusion device with good synchronization of multi-strip extrusion and high efficiency for feeding twin-screw and discharging single-screw is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an extrusion device of double screw feeding single screw rod ejection of compact adopts the double screw rod feeding, the mode of extruding of the single screw rod ejection of compact, and the effectual single screw rod of having avoided extrudes the problem that efficiency is lower and many ejection of compact synchronizations of double screw are not good to part material.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a double-screw feeding single-screw discharging extrusion device comprises a rack, and a discharging device, a feeding bin, a gear transmission case and a driving device which are arranged on the rack; the discharging device comprises a shell, a long screw and a short screw, wherein the rotation directions of the long screw and the short screw are opposite; the shell comprises a cylindrical long screw cavity and a cylindrical short screw cavity, the long screw cavity and the short screw cavity are horizontally arranged in parallel, and the junction of the long screw cavity and the short screw cavity is communicated to form a material through hole; communicating the long screw cavity with the short screw cavity, enabling materials to enter the long screw cavity and the short screw cavity from a feeding bin, and enabling the materials in the short screw cavity to enter the long screw cavity through a material port; the long screw rod is positioned in the long screw rod cavity, and the short screw rod is positioned in the short screw rod cavity; the top of the shell is provided with a feed inlet communicated with the long screw cavity and the short screw cavity, and a discharge hole at the bottom of the feed bin is connected to the feed inlet;
the cavity openings at one sides of the long screw cavity and the short screw cavity are parallel and level, and the cavity openings at one side of the parallel and level are respectively provided with a partition plate;
a strip discharging mould is arranged on the other side cavity opening of the long screw cavity, a long screw positioning sleeve is arranged at the center of the inner side of the strip discharging mould, and a positioning shaft head at the other end of the long screw is in clearance fit with the long screw positioning sleeve; the long screw rod positioning sleeve is used for positioning a positioning shaft head at the other end of the long screw rod;
the other side cavity opening of the short screw cavity is an oval bevel opening and is provided with an oval gland, one end of a long shaft of the gland is arranged on the bevel opening through a hinge, the other end of the long shaft is detachably connected with the bevel opening, and the gland can seal and open the short screw cavity; a short screw rod positioning sleeve is arranged on the inner side of the gland, and a positioning shaft head at the other end of the short screw rod is in clearance fit with the short screw rod positioning sleeve; the short screw rod positioning sleeve is used for positioning a positioning shaft head at the other end of the short screw rod.
Preferably, in the extrusion device for double-screw feeding and single-screw discharging, the gear transmission box comprises a box body, and a long screw output shaft, a short screw output shaft and a speed reducer input shaft which are arranged in the box body through bearings; a long screw transmission gear and a short screw transmission gear are respectively arranged on the long screw output shaft and the short screw output shaft, an input gear is arranged on the input shaft of the speed reducer, the long screw transmission gear is meshed with the short screw transmission gear, and the long screw transmission gear is meshed with the input gear; the output shaft head of the output shaft of the long screw is connected with the transmission shaft head of the long screw through a coupler; the output shaft head of the short screw output shaft is connected with the transmission shaft head of the short screw through a coupling; and the input shaft head of the input shaft of the speed reducer is connected with the output shaft of the driving device through a coupler.
Preferably, in the above twin-screw feeding single-screw discharging extrusion device, the transmission ratio of the long screw transmission gear and the short screw transmission gear is 1: 1.
preferably, in the above extrusion apparatus with twin-screw feeding and single-screw discharging, the long screw is provided with a right-handed helical blade, and the short screw is provided with a left-handed helical blade; when the driving device drives the long screw and the short screw to rotate, the inclined opening of the short screw cavity is provided with the gland for sealing, so that the helical blade on the short screw can press the material into the long screw cavity through the material through opening, and the double-screw feeding is realized; and the material in the long screw cavity moves towards the strip discharging die under the action of the helical blade on the long screw until being extruded.
Preferably, in the extrusion device for double-screw feeding and single-screw discharging, the strip discharging die is detachably mounted on the opening on the other side of the long screw cavity through a locking nut, and the strip discharging die can be dismounted through dismounting and mounting of the locking nut.
Preferably, in the extrusion device for double-screw feeding and single-screw discharging, the strip discharging die is a strip discharging sheet, and a plurality of through holes with the same diameter are formed in the strip discharging sheet, so that multiple strips can be extruded.
Preferably, in the above extrusion apparatus for twin-screw feeding and single-screw discharging, the other end of the long shaft of the gland is detachably connected to the bevel opening by a bolt.
Preferably, in the above extrusion device for twin-screw feeding and single-screw discharging, the driving device is a speed reducing motor, and an output shaft of the speed reducing motor is connected with an input shaft head of an input shaft of the speed reducing motor through a coupling.
Preferably, in the extrusion device for double-screw feeding and single-screw discharging, the housing is connected to one side of the box body through a flange connection disc, the speed reduction motor is mounted to the other side of the box body through the flange connection disc, the flange connection disc is provided with bolt holes, and connecting bolts penetrate through the bolt holes to connect the housing and the speed reduction motor to the box body; the bottom of the box body is arranged on the rack, the bottom of the rack is arranged on the base through a plane bearing, and the transposition of the rack and equipment on the rack can be realized.
Preferably, in the above extrusion device with double-screw feeding and single-screw discharging, the feeding port and the discharging port arranged at the top of the feeding bin are rectangles with equal size.
According to the technical scheme, compared with the prior art, the utility model discloses an extrusion device for double-screw feeding and single-screw discharging, which combines the advantages of single screw and double screws, adopts the extrusion mode of double-screw feeding and single-screw discharging, and effectively avoids the problems of low extrusion efficiency of single screw on partial materials and poor synchronism of multiple double-screw discharging; under the condition of equal power and equal size, the extrusion efficiency is improved by about 20 percent compared with that of a single screw, and the synchronism of a plurality of extrusion pieces is obviously superior to that of double-screw discharging.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a front view partially in section of the present invention;
fig. 2 is a top partial cross-sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses extrusion device of twin-screw feeding single screw rod ejection of compact adopts the twin-screw feeding, the mode of extruding of the single screw rod ejection of compact, the effectual single screw rod of having avoided extrudes the problem that efficiency is lower and many ejection of compact synchronizations of twin-screw to some materials.
The utility model discloses an extrusion device for double-screw feeding and single-screw discharging, which comprises a frame 1, a discharging device 2, a feeding bin 3, a gear transmission case 4 and a driving device 5, wherein the discharging device 2, the feeding bin 3, the gear transmission case 4 and the driving device are arranged on the frame 1;
the discharging device 2 comprises a shell 21, a long screw 22 and a short screw 23 with opposite rotation directions; the shell 21 comprises a cylindrical long screw cavity 25 and a cylindrical short screw cavity 26, the long screw cavity 25 and the short screw cavity 26 are horizontally arranged in parallel, and the junction of the long screw cavity 25 and the short screw cavity 26 is communicated to form a material through opening 27; the long screw 22 is positioned in the long screw cavity 25, and the short screw 23 is positioned in the short screw cavity 26; the top of the shell 21 is provided with a feed inlet 28 communicated with the long screw cavity 25 and the short screw cavity 26, and a discharge outlet 29 at the bottom of the feed bin 3 is connected to the feed inlet 28.
Materials enter the long screw cavity 25 and the short screw cavity 26 from the feeding bin 3, and the materials in the short screw cavity 26 can enter the long screw cavity 25 through the material through hole 27;
the orifices on one sides of the long screw cavity 25 and the short screw cavity 26 are parallel and level, and the orifices on one side of the parallel and level are respectively provided with a spacing plate 210, the spacing plates 210 respectively seal the orifices on one sides of the long screw cavity 25 and the short screw cavity 26, and the transmission shaft heads 211 at one ends of the long screw 22 and the short screw 23 respectively penetrate through the spacing plates 210 and are in transmission connection with the gear transmission case 4;
a strip discharging mould 212 is arranged on the other side cavity opening of the long screw cavity 25, a long screw positioning sleeve 213 is arranged at the center of the inner side of the strip discharging mould 212, a positioning shaft head at the other end of the long screw 22 is in clearance fit with the long screw positioning sleeve 213, and the long screw positioning sleeve 213 is used for positioning the positioning shaft head at the other end of the long screw 22;
the other side of the short screw cavity 26 is provided with an oval bevel opening, and is provided with an oval gland 214, one end of the long shaft of the gland is arranged on the bevel opening through a hinge 215, and the other end of the long shaft of the gland is detachably connected with the bevel opening, so that the short screw cavity 26 can be closed and opened; the inner side of the gland 214 is provided with a short screw rod positioning sleeve 216, the positioning shaft head at the other end of the short screw rod 23 is in clearance fit with the short screw rod positioning sleeve 216, and the short screw rod positioning sleeve 216 is used for positioning the positioning shaft head at the other end of the short screw rod 23.
In order to further optimize the technical scheme, the gear transmission case 4 comprises a case body 41, a long screw output shaft 42, a short screw output shaft 43 and a speed reducer input shaft 44 which are arranged in the case body 41 through bearings; a long screw transmission gear 45 and a short screw transmission gear 46 are respectively arranged on the long screw output shaft 42 and the short screw output shaft 43, an input gear 47 is arranged on the speed reducer input shaft 44, the long screw transmission gear 45 is meshed with the short screw transmission gear 46, and the long screw transmission gear 45 is meshed with the input gear 47; the output shaft head of the long screw output shaft 42 is connected with the transmission shaft head 211 of the long screw 22 through a coupler; the output shaft head of the short screw output shaft 43 is connected with the transmission shaft head 211 of the short screw 23 through a coupler; the input shaft head of the reducer input shaft 44 is connected with the output shaft of the driving device 5 through a coupling.
In order to further optimize the above technical solution, the transmission ratio of the long screw drive gear 45 and the short screw drive gear 46 is 1: 1.
in order to further optimize the technical scheme, a right-handed helical blade is arranged on the long screw 22, and a left-handed helical blade is arranged on the short screw 23; the pitches and heights of the helical blades on the long screw 22 and the short screw 23 are gradually reduced along the conveying direction; the long screw 22 and the short screw 23 are both multi-head screws; when the driving device 5 drives the long screw 22 and the short screw 23 to rotate, the gland 214 for sealing is installed on the other side bevel opening of the short screw cavity 26, so that the helical blade on the short screw 23 can press the material into the long screw cavity 25 through the material through opening 27, and thus, the twin-screw feeding is realized; the material in the long screw cavity 25 moves towards the stripping die 212 under the action of the helical blade on the long screw 22 until being extruded.
In order to further optimize the technical scheme, the strip discharging mold 212 is detachably mounted on the other side cavity opening of the long screw cavity 25 through the locking nut 217, and the strip discharging mold 212 can be dismounted through dismounting of the locking nut 217.
In order to further optimize the technical scheme, the strip discharging die 212 is a strip discharging piece, a plurality of through holes with the same diameter are formed in the strip discharging piece, multiple strips can be extruded, and the long screw rod positioning sleeve 213 and the through holes are arranged in a staggered mode, so that the material extrusion through the through holes is not influenced.
In order to further optimize the above technical solution, the other end of the long shaft of the gland 214 is detachably connected with the bevel opening through a bolt.
In order to further optimize the above technical solution, the driving device 5 is a reduction motor, and an output shaft of the reduction motor is connected with an input shaft head of the input shaft 44 of the reduction gear through a coupling.
In order to further optimize the technical scheme, the shell 21 is connected to one side of the box body 41 through a flange connection disc, the speed reducing motor is installed to the other side of the box body 41 through the flange connection disc, bolt holes are formed in the flange connection disc, and connecting bolts penetrate through the bolt holes to connect the shell 21 and the speed reducing motor to the box body 41; the bottom of the box 41 is arranged on the rack 1, and the bottom of the rack 1 is arranged on the base through a plane bearing, so that the indexing of the rack 1 and equipment on the rack 1 can be realized.
In order to further optimize the above technical scheme, the feeding opening and the discharging opening 29 arranged at the top of the feeding bin 3 are rectangles with equal size.
The working principle is as follows:
materials are contained in the feeding bin 3 and enter the long screw cavity 25 and the short screw cavity 26 through a discharge hole 29 at the bottom of the feeding bin 3 and a feeding hole 28 at the top of the shell 21; the long screw 22 and the short screw 23 can rotate in respective cavities under the driving of a speed reducing motor; the long screw 22 is provided with a right-handed helical blade, the short screw 23 is provided with a left-handed helical blade, and the other side bevel opening of the short screw cavity 26 is provided with a gland 214 for sealing, so that the helical blade on the short screw 23 can press the material into the long screw cavity 25 through the material through opening 27, thereby realizing double-screw feeding;
the material in the long screw cavity 25 moves towards the strip discharging die 212 under the action of the helical blade on the long screw 22 until being extruded out in a multi-strip extruding mode on the strip discharging die, so that single-screw discharging is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A double-screw feeding single-screw discharging extrusion device comprises a rack, and a discharging device, a feeding bin, a gear transmission case and a driving device which are arranged on the rack; the device is characterized in that the discharging device comprises a shell, a long screw and a short screw, wherein the rotation directions of the long screw and the short screw are opposite; the shell comprises a cylindrical long screw cavity and a cylindrical short screw cavity, the long screw cavity and the short screw cavity are horizontally arranged in parallel, and the junction of the long screw cavity and the short screw cavity is communicated to form a material through hole; the long screw rod is positioned in the long screw rod cavity, and the short screw rod is positioned in the short screw rod cavity; the top of the shell is provided with a feed inlet communicated with the long screw cavity and the short screw cavity, and a discharge hole at the bottom of the feed bin is connected to the feed inlet;
the cavity openings at one sides of the long screw cavity and the short screw cavity are parallel and level, and the cavity openings at one side of the parallel and level are respectively provided with a partition plate;
a strip discharging mould is arranged on the other side cavity opening of the long screw cavity, a long screw positioning sleeve is arranged at the center of the inner side of the strip discharging mould, and a positioning shaft head at the other end of the long screw is in clearance fit with the long screw positioning sleeve;
the other side cavity opening of the short screw cavity is an oval bevel opening and is provided with an oval gland, one end of the long shaft of the gland is arranged on the bevel opening through a hinge, and the other end of the long shaft is detachably connected with the bevel opening; the inner side of the gland is provided with a short screw rod positioning sleeve, and a positioning shaft head at the other end of the short screw rod is in clearance fit with the short screw rod positioning sleeve.
2. The extrusion device for double-screw feeding and single-screw discharging of claim 1, wherein the gear transmission case comprises a case body, and a long screw output shaft, a short screw output shaft and a speed reducer input shaft which are arranged in the case body through bearings; a long screw transmission gear and a short screw transmission gear are respectively arranged on the long screw output shaft and the short screw output shaft, an input gear is arranged on the input shaft of the speed reducer, the long screw transmission gear is meshed with the short screw transmission gear, and the long screw transmission gear is meshed with the input gear; the output shaft head of the output shaft of the long screw is connected with the transmission shaft head of the long screw through a coupler; the output shaft head of the short screw output shaft is connected with the transmission shaft head of the short screw through a coupling; and the input shaft head of the input shaft of the speed reducer is connected with the output shaft of the driving device through a coupler.
3. The twin-screw-fed single-screw-discharged extrusion device according to claim 2, wherein the transmission ratio of the long screw drive gear to the short screw drive gear is 1: 1.
4. the extrusion device of claim 1, wherein the long screw is provided with a right-handed helical blade, and the short screw is provided with a left-handed helical blade; the screw pitches and heights of the helical blades on the long screw and the short screw are gradually reduced along the conveying direction; the long screw and the short screw are both multi-head screws.
5. The extrusion device for double-screw feeding and single-screw discharging of claim 1, wherein the strip discharging die is detachably mounted on the other side cavity opening of the long screw cavity through a locking nut.
6. The extrusion device for double-screw feeding and single-screw discharging of claim 1, wherein the strip discharging die is a strip discharging sheet, and a plurality of through holes with the same diameter are formed in the strip discharging sheet.
7. The extrusion device for double-screw feeding and single-screw discharging of claim 1, wherein the other end of the long shaft of the gland is detachably connected with the bevel opening through a bolt.
8. The extrusion device of claim 2, wherein the driving device is a speed reducing motor, and an output shaft of the speed reducing motor is connected with an input shaft head of an input shaft of the speed reducer through a coupling.
9. The extrusion device for double-screw feeding and single-screw discharging of claim 8, wherein the housing is connected to one side of the box body through a flange connection plate, the speed reducing motor is mounted to the other side of the box body through the flange connection plate, bolt holes are formed in the flange connection plate, and connecting bolts penetrate through the bolt holes to connect the housing and the speed reducing motor to the box body; the bottom of the box body is arranged on the rack, and the bottom of the rack is arranged on the base through a plane bearing.
10. The extrusion device for double-screw feeding and single-screw discharging of claim 1, wherein the feeding port arranged at the top of the feeding bin and the discharging port are rectangular with equal size.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020259402.4U CN212046106U (en) | 2020-03-05 | 2020-03-05 | Double-screw feeding and single-screw discharging extrusion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020259402.4U CN212046106U (en) | 2020-03-05 | 2020-03-05 | Double-screw feeding and single-screw discharging extrusion device |
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| CN212046106U true CN212046106U (en) | 2020-12-01 |
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| CN202020259402.4U Active CN212046106U (en) | 2020-03-05 | 2020-03-05 | Double-screw feeding and single-screw discharging extrusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111216401A (en) * | 2020-03-05 | 2020-06-02 | 黑龙江迪尔制药机械有限责任公司 | Double-screw feeding and single-screw discharging extrusion device |
-
2020
- 2020-03-05 CN CN202020259402.4U patent/CN212046106U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111216401A (en) * | 2020-03-05 | 2020-06-02 | 黑龙江迪尔制药机械有限责任公司 | Double-screw feeding and single-screw discharging extrusion device |
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