CN111896086A - Material conveying device of automatic powder material weighing machine - Google Patents
Material conveying device of automatic powder material weighing machine Download PDFInfo
- Publication number
- CN111896086A CN111896086A CN202010772490.2A CN202010772490A CN111896086A CN 111896086 A CN111896086 A CN 111896086A CN 202010772490 A CN202010772490 A CN 202010772490A CN 111896086 A CN111896086 A CN 111896086A
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- China
- Prior art keywords
- shaft
- stirring
- conveying
- spiral
- stirring shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/003—Details; specially adapted accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/546—Devices for loading or unloading and forming part of the container, e.g. rollers, conveyors
Abstract
The invention discloses a material conveying device of an automatic powder weighing machine, which comprises a stirring mechanism and a spiral conveying mechanism which are arranged based on a material storage box, wherein the material storage box comprises a bucket-shaped box body and a box cover arranged at the upper opening of the bucket-shaped box body, the lower opening of the bucket-shaped box body is a material outlet, the stirring mechanism comprises a stirring shaft coaxially arranged in the bucket-shaped box body, the upper end of the stirring shaft is connected with a rotating shaft of a variable-frequency speed regulating motor arranged on the box cover through a universal coupling, and an eccentric stirring paddle is arranged on the shaft body of the stirring shaft; the spiral conveying mechanism comprises a spiral conveying rod arranged in a conveying pipe, the conveying pipe is coaxially arranged at a discharge port of the storage box, and the upper end of the spiral conveying rod is connected with a stirring shaft. The invention solves the technical problems of low powder weighing precision and poor weighing efficiency in the traditional technology, and has simple structure and low manufacturing cost.
Description
Technical Field
The invention relates to a weighing device in an instrument, in particular to a material conveying device of an automatic powder weighing machine.
Background
At present, a material conveying device for an automatic material weighing machine for small-weight powder is mainly of a belt transmission structure, namely, a motor is used for driving a material conveying belt to rotate or a vibrator is used for driving a material conveying plate to vibrate, so that the purpose of conveying materials for the automatic material weighing machine is achieved.
The invention with application number 201410031741.6 applies for a semi-automatic weighing machine for weighing melamine and the utility model with application number 201420043045.2 applies for a storage and metering screw device for a semi-automatic weighing machine for weighing melamine, because the power problem of material conveying is not solved, the powder material can not be actually conveyed, and therefore the powder material can not be converted into a product.
The traditional belt transmission structure (belt or plate material transmission device) is complex in structure and high in cost; when the material weighing precision is required to be higher, the material weighing efficiency of the belt transmission structure is very low.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a material conveying device of an automatic powder weighing machine.
Can solve the automatic weighing machine feeding device of powder of prior art problem, its technical scheme includes rabbling mechanism and screw conveyor based on the storage case setting, the storage case includes fill shape box and locates the case lid of fill shape box suitable for reading, the end opening of fill shape box is the discharge gate, and what the institute differed is:
1. the stirring mechanism comprises a stirring shaft coaxially arranged in the hopper-shaped box body, the upper end of the stirring shaft is connected with a rotating shaft of a variable-frequency speed-regulating motor arranged on the box cover through a universal coupling, and an eccentric stirring paddle is arranged on a shaft body of the stirring shaft.
2. The spiral conveying mechanism comprises a spiral material conveying rod arranged in a conveying pipe, the conveying pipe is coaxially arranged at a discharge port of the material storage box, and the upper end of the spiral material conveying rod is connected with a stirring shaft.
Among the above-mentioned structure, eccentric settings's rabbling mechanism makes conveyer pipe and spiral biography material pole be in the vibration state (spiral biography material pole striking conveyer pipe and produce the vibration, makes the powder become the kinetic friction motion by static friction motion along the helicoid), and screw feed mechanism adopts perpendicular mounting means, and the weighing in-process, the gravity of powder and conveyer pipe and the vibration of spiral biography material pole provide transmission power for the powder transmission.
Under the control of the variable-frequency speed regulating motor, when weighing is started, the vibration frequency is high, the powder conveying efficiency is high, and before weighing is finished, the vibration frequency is low, and the weighing precision is high.
In order to obtain a larger vibration effect, the unilateral clearance between the spiral material conveying rod and the conveying pipe is designed to be 0.5-2 mm, the clearance is too small, the vibration is not obvious, and the powder can leak when the clearance is too large.
The spiral material conveying rod adopts a single-head screw or a double-head screw, and in order to control the powder material conveying, the helix angle of the screw is designed to be 7-20 degrees (smaller than the static friction angle of the powder material and larger than the dynamic friction angle of the powder material).
In order to facilitate replacement of the vulnerable spiral material conveying rod, the spiral material conveying rod is embedded into the stirring shaft and is locked in position by a pin with threads.
The universal coupling preferably adopts a WSD type cross shaft type coupling.
In order to reduce the resistance in the stirring process, the eccentric stirring paddle is designed into a frame-shaped frame.
Furthermore, the upper end of the stirring shaft is connected with a reducer output shaft arranged on the box cover through a universal coupling, and the reducer output shaft is connected with a rotating shaft of a variable-frequency speed-regulating motor.
The invention has the beneficial effects that:
1. the material conveying device of the automatic powder weighing machine solves the technical problems of low powder weighing precision and poor weighing efficiency in the traditional technology, and has simple material conveying structure and low manufacturing cost; the problem of insufficient transmission power in the patent application numbers 201410031741.6 and 201420043045.2 is solved.
2. The invention is suitable for automatic weighing of various mixed powder in a small weight range, and can be used for automatic weighing of single powder or mixed powder such as powder metallurgy powder, superhard material tool powder, pharmacy and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
And (3) identifying the figure number: 1. a material storage box; 2. a stirring shaft; 3. a speed reducer; 4. a variable frequency speed regulating motor; 5. an eccentric stirring paddle; 6. a universal coupling; 7. a delivery pipe; 8. a screw material conveying rod; 9. and (4) supporting the base.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The invention relates to a material conveying device of an automatic powder weighing machine, which comprises a stirring mechanism, a power mechanism and a spiral conveying mechanism which are arranged based on a material storage box 1.
The storage box 1 comprises a hopper-shaped box body (the upper opening is large and the lower opening is small), a box cover is arranged at the upper opening of the hopper-shaped box body, and the lower opening of the hopper-shaped box body is a discharge opening, as shown in figure 1.
The stirring mechanism comprises a stirring shaft 2 coaxially arranged in the hopper-shaped box body, and a right-angle trapezoidal frame (in a vertical plane) is arranged on a shaft body of the stirring shaft 2 and serves as an eccentric stirring paddle 5, as shown in fig. 1.
The power mechanism comprises a variable-frequency speed-regulating motor 4 and a speed reducer 3, the speed reducer 3 is coaxially mounted on the box cover through a supporting seat 9, the variable-frequency speed-regulating motor 4 is mounted on the speed reducer 3, a rotating shaft of the variable-frequency speed-regulating motor 4 is connected with an input shaft of the speed reducer 3, an output shaft of the speed reducer 3 is connected with the input shaft of the supporting seat 9, and the output shaft of the supporting seat 9 downwards penetrates through the box cover to extend into the hopper-shaped box body and is connected with the upper end of the stirring shaft 2 through a universal coupling 6 (preferably a WSD type.
Screw conveying mechanism includes conveyer pipe 7 and the coaxial spiral of locating in conveyer pipe 7 and passes material pole 8 (single-end screw or double-end screw), the coaxial discharge gate (the vertical setting of conveyer pipe 7) of bucket shape box of locating in the upper end of conveyer pipe 7, the coaxial shaft hole of embedding (mixing) shaft 2 bottoms of upper end spindle nose of spiral material pole 8 has seted up the screw thread pinhole corresponding to the shaft hole on (mixing) shaft 2, close threaded pin in the screw thread pinhole soon and pass material pole 8 locking with the spiral on (mixing) shaft 2, as shown in fig. 1.
The unilateral clearance between the spiral material conveying rod 8 and the conveying pipe 7 is designed to be 0.5-2 mm, and the helix angle of the spiral material conveying rod 8 is designed to be 7-20 degrees.
The speed reducer 3 is used for providing larger output torque through the low-power variable-frequency speed regulating motor 4, and further prolonging the service life of the variable-frequency speed regulating motor 4.
The universal coupling 6 has the function of enabling the spiral material conveying rod 8 to generate eccentric motion, and continuously impacts the conveying pipe 7 in the material weighing process to generate vibration.
The eccentric stirring paddle 5 has the following functions: when the variable-frequency speed regulating motor 4 drives the eccentric stirring paddle 5 through the speed reducer 3 to stir the powder, the powder generates a reaction force for the eccentric stirring paddle 5, so that the spiral material conveying rod 8 generates an eccentric force to impact the conveying pipe 7; the contact area of the eccentric stirring paddle 5 and the powder cannot be too large, otherwise, larger resistance is generated to increase the power of the variable-frequency speed-regulating motor 4, so that the eccentric stirring paddle 5 adopts a frame.
In order to enable the spiral material conveying rod 8 to generate larger impact force in the material weighing process, a single-side gap of 0.5-2 mm is kept between the spiral material conveying rod 8 and the conveying pipe 7, the gap is too small, the impact force is small, the gap is too large, and powder still can move downwards from the large gap when the variable frequency speed regulating motor 4 is static, so that the transmission of the powder cannot be controlled.
The variable-frequency speed regulating motor 4 regulates the rotating speed of the spiral material conveying rod 8 according to the requirement, and the rotating speed is higher when weighing is started; before the weighing is finished, the rotating speed is slow.
Claims (7)
1. Powder automatic weighing machine feeding device, include rabbling mechanism and screw feed mechanism based on storage case (1) sets up, storage case (1) is including fill shape box and the case lid of locating fill shape box suitable for reading, the end opening of fill shape box is discharge gate, its characterized in that:
the stirring mechanism comprises a stirring shaft (2) coaxially arranged in the hopper-shaped box body, the upper end of the stirring shaft (2) is connected with a rotating shaft of a variable-frequency speed-regulating motor (4) arranged on the box cover through a universal coupling (6), and an eccentric stirring paddle (5) is arranged on a shaft body of the stirring shaft (2);
the spiral conveying mechanism comprises a spiral conveying rod (8) arranged in a conveying pipe (7), the conveying pipe (7) is coaxially arranged at a discharge port of the storage box (1), and the upper end of the spiral conveying rod (8) is connected with a stirring shaft (2).
2. The conveying device of an automatic powder weighing machine according to claim 1, characterized in that: the unilateral clearance between the spiral material conveying rod (8) and the conveying pipe (7) is 0.5-2 mm.
3. The conveying device of the automatic powder weighing machine of claim 2, which is characterized in that: the spiral material conveying rod (8) is a single-head screw or a double-head screw, and the helix angle of the spiral material conveying rod is 7-20 degrees.
4. The conveying device of the automatic powder weigher as claimed in any one of claims 1 to 3, which is characterized in that: the spiral material conveying rod (8) is embedded into the stirring shaft (2) and is locked in position by a pin with threads.
5. The conveying device of the automatic powder weigher as claimed in any one of claims 1 to 3, which is characterized in that: the universal coupling (6) is a WSD type cross shaft type coupling.
6. The conveying device of the automatic powder weigher as claimed in any one of claims 1 to 3, which is characterized in that: the eccentric stirring paddle (5) is a frame-shaped frame.
7. The conveying device of the automatic powder weigher as claimed in any one of claims 1 to 3, which is characterized in that: the upper end of the stirring shaft (2) is connected with an output shaft of a speed reducer (3) arranged on the box cover through a universal coupling (6), and an input shaft of the speed reducer (3) is connected with a rotating shaft of a variable-frequency speed-regulating motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772490.2A CN111896086A (en) | 2020-08-04 | 2020-08-04 | Material conveying device of automatic powder material weighing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772490.2A CN111896086A (en) | 2020-08-04 | 2020-08-04 | Material conveying device of automatic powder material weighing machine |
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| CN111896086A true CN111896086A (en) | 2020-11-06 |
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| CN202010772490.2A Pending CN111896086A (en) | 2020-08-04 | 2020-08-04 | Material conveying device of automatic powder material weighing machine |
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| CN108781629A (en) * | 2018-06-19 | 2018-11-13 | 明光市大明盛华农业科技有限公司 | A kind of oil tree peony plantation seeding apparatus |
| CN109304853A (en) * | 2018-09-04 | 2019-02-05 | 山东霞光集团有限公司 | A kind of wood moulding extruder full-automatic alarm controller and Anti-blockage mechanism |
| CN109848768A (en) * | 2019-01-30 | 2019-06-07 | 桂林特邦新材料有限公司 | Diamond bead automatic edging machine |
| CN110411543A (en) * | 2019-07-09 | 2019-11-05 | 江苏中海华核环保有限公司 | For keeping in the measuring equipment of radioactive spent resin and adjustable water and resin ratio |
| CN209633881U (en) * | 2019-01-23 | 2019-11-15 | 济南同路医药科技发展有限公司 | A kind of tablet press machine lower hopper agitating device |
| CN110844625A (en) * | 2019-10-16 | 2020-02-28 | 上海辛玮智能科技有限公司 | High-precision powder guiding and weighing mechanism |
| CN111298934A (en) * | 2019-11-24 | 2020-06-19 | 浙江省东阳市剑华磁业有限公司 | Preforming method for sintering permanent magnetic ferrite |
-
2020
- 2020-08-04 CN CN202010772490.2A patent/CN111896086A/en active Pending
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|---|---|---|---|---|
| US20030147304A1 (en) * | 2002-01-25 | 2003-08-07 | Bayer Aktiengesellschaft | Dynamic mixer |
| CN101216340A (en) * | 2008-01-08 | 2008-07-09 | 吉林大学非矿技术装备研究院 | Powder automatic weighing machine |
| CN102335960A (en) * | 2011-11-09 | 2012-02-01 | 冯忠绪 | Gear synchronous double-horizontal-shaft vibrating stirrer |
| CN103776520A (en) * | 2014-01-23 | 2014-05-07 | 李彦栓 | Semi-automatic weighing machine for weighing Melamine materials |
| CN203737156U (en) * | 2014-02-19 | 2014-07-30 | 阮祺 | Helical ribbon agitator |
| CN204150492U (en) * | 2014-10-10 | 2015-02-11 | 连云港宝畅流体输送设备有限公司 | A kind of eccentric feed bin for conveying powder material |
| CN204736481U (en) * | 2015-06-30 | 2015-11-04 | 湖北汇瑞药业股份有限公司 | A unloading agitating unit for powder preforming |
| CN205020086U (en) * | 2015-09-30 | 2016-02-10 | 北京宝沃石油技术有限责任公司 | Multifunctional stirrer |
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| CN107224909A (en) * | 2017-07-14 | 2017-10-03 | 汪辉 | Efficient mixing arrangement is used in a kind of water soluble fertilizer processing |
| CN108781629A (en) * | 2018-06-19 | 2018-11-13 | 明光市大明盛华农业科技有限公司 | A kind of oil tree peony plantation seeding apparatus |
| CN108584188A (en) * | 2018-07-25 | 2018-09-28 | 大余县萤通工贸有限公司 | A kind of fluorite feeds intake weightless-scale stock bin |
| CN109304853A (en) * | 2018-09-04 | 2019-02-05 | 山东霞光集团有限公司 | A kind of wood moulding extruder full-automatic alarm controller and Anti-blockage mechanism |
| CN209633881U (en) * | 2019-01-23 | 2019-11-15 | 济南同路医药科技发展有限公司 | A kind of tablet press machine lower hopper agitating device |
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| CN110411543A (en) * | 2019-07-09 | 2019-11-05 | 江苏中海华核环保有限公司 | For keeping in the measuring equipment of radioactive spent resin and adjustable water and resin ratio |
| CN110844625A (en) * | 2019-10-16 | 2020-02-28 | 上海辛玮智能科技有限公司 | High-precision powder guiding and weighing mechanism |
| CN111298934A (en) * | 2019-11-24 | 2020-06-19 | 浙江省东阳市剑华磁业有限公司 | Preforming method for sintering permanent magnetic ferrite |
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Application publication date: 20201106 |