CN2672631Y - Overflow type screw metering scale - Google Patents
Overflow type screw metering scale Download PDFInfo
- Publication number
- CN2672631Y CN2672631Y CN 03268728 CN03268728U CN2672631Y CN 2672631 Y CN2672631 Y CN 2672631Y CN 03268728 CN03268728 CN 03268728 CN 03268728 U CN03268728 U CN 03268728U CN 2672631 Y CN2672631 Y CN 2672631Y
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- CN
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- Prior art keywords
- screw
- scale
- overflow
- lever
- discharging opening
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- Expired - Fee Related
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Abstract
The utility model relates to powdered-material dynamic measuring equipment. The utility model comprises a drive device (7), a screw casing (2), a screw casing seat (10), a screw axis (3) with screw sheets (4), and an axis coupling (6), wherein, the lower side of a discharge port of the screw casing, which corresponds to the screw axis is a U-shaped gutter. The outer side of the U-shaped gutter is fixedly provided with an overflow box body (5). With the center of a discharge port as a boundary, the rotary directions of the left screw sheet and the right screw sheet are opposite; so the powder is forced to upwards overflow from the discharge port. A lever supporting point (8) of the scale body and a pressure sensor (9) are utilized to support the screw casing seat (11) to form a lever-type metering scale. The lever supporting point (8) of the scale body is positioned at the center of an overflow port. One end of the lever supporting point (8) of the scale body is a drive device, and the other end of the lever supporting point (8) of the scale body is a metrial receiving end. The lever supporting point (8) of the scale body and the pressure sensing device (9) are fixedly installed on the frame body (11) of a screw scale. The utility model has the advantages that the flow speed of the powder in the screw body is not interfered by the positive wind and the negative wind of the discharge port; so the measuring accuracy of the powder can be guaranteed.
Description
Affiliated technical field
The utility model relates to a kind of equipment of powder material dynamic measurement.
Background technology
At present, the powder material dynamic measurement equipment of application has helix balance, chute scale, impact flow meter, rotor scale etc.Chute scale, impact flow meter are in metering process, and the time that powder passes through is very short, and measuring accuracy is lower; The measuring accuracy of rotor scale is higher, and still, complex structure, price are higher; Helix balance is simple in structure, cost is low, but it is subjected to the influence of discharging opening malleation wind or negative pressure wind bigger, does not have malleation wind or negative pressure wind is done the time spent when discharging opening that is:, and measuring accuracy is higher; Do the time spent when discharging opening has malleation wind or negative pressure wind, the flowing velocity of powder is disturbed in the conveyor screw, and materials flow speed and motor speed are nonlinear relationships, will influence measuring accuracy.
Summary of the invention
The purpose of this utility model is to provide a kind of and is subjected to the malleation wind at discharging opening place or the negative pressure wind effect is little, the flowing velocity of powder can be not disturbed in the conveyor screw, and makes materials flow speed and motor speed linear, can guarantee the helix balance of powder metering precision.
The utility model is to realize like this, it comprises a shaped spiral housing seat, drive unit is fixedly mounted on this shaped spiral housing seat with the shaped spiral housing that has feed inlet and outlet, the screw axis of band helical blade is installed in the shaped spiral housing, the outer end of screw axis is connected with drive unit through shaft coupling, it is characterized in that: it is the U-lag of one with the screw feeder housing that the screw axis part downside of screw feeder discharging opening correspondence is one, the outside is installed with an overflow casing, the pairing screw axis part of discharging opening, center with discharging opening is the boundary, a left side, the rotation direction of right spiral vane is opposite, just, under the effect of antispin blade, powder is forced to upwards overflow discharging opening, and the shaped spiral housing seat is supported by scale body balance pivot and pressure transducer, constitutes the lever weigher, the fulcrum of lever is at the overflow vent center, one end of lever is a drive unit, and another is disconnected to be storage end, and scale body balance pivot and pressure transducer are fixedly mounted on the helix balance support body.
Because the helical blade at this overflow-type spiral meter discharging opening place adopts forward and reverse spiral, make the powder that enters discharging opening be forced to upwards overflow discharging, draw off through the spill box end opening then, and the powder in the conveyor screw forms closely knit material envelope, even there are malleation wind or negative pressure wind effect in the discharging opening place, powder flowing velocity in the conveyor screw can be not disturbed yet, that is to say and can not disturb material powder flow rate and force sensor signals in the conveyor screw, make materials flow speed and motor speed linear, guarantee the measuring accuracy of powder.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model;
Fig. 2 is the enlarged drawing that the A-A of Fig. 1 analyses and observe.
Embodiment
Shaped spiral housing seat 10 of the present utility model is the bracing or strutting arrangement of screw feeder and drive unit 7 and the support lever of measuring apparatus, and drive unit 7 is fixedly mounted on this shaped spiral housing seat with the shaped spiral housing 2 that has feed inlet and outlet.The charging aperture of shaped spiral housing 2 is flexible coupling by charging aperture and 1 is connected with the discharging opening of higher level's charging gear.The screw axis 3 of band helical blade 4 is installed in the shaped spiral housing 2, and the outer end of screw axis 3 is connected with drive unit 7 through shaft coupling 6, so that power is provided for screw axis 3.The part downside of the screw axis 3 of screw feeder discharging opening correspondence is one and is the U-lag of one with screw feeder housing 2, the outside is installed with an overflow casing 5, the pairing screw axis part of discharging opening, center with discharging opening is the boundary, the rotation direction of left and right spiral vane 4 is opposite, under the effect of positive and negative helical blade 4, powder is forced to upwards overflow discharging opening, and the end opening through spill box 5 draws off then.The end opening of spill box 5 is flexible coupling through spill box outlet and 12 is connected with follow-up equipment.Shaped spiral housing seat 10 is supported by scale body balance pivot 8 and pressure transducer 9, constitute the lever weigher, scale body balance pivot 8 is positioned at the overflow vent center, one end of lever is a drive unit 7, another is disconnected to be storage end, and scale body balance pivot 8 and pressure transducer 9 are fixedly mounted on the helix balance support body 11 and constitute.
Claims (1)
1, the overflow-type spiral metering scale, it comprises a shaped spiral housing seat (10), drive unit (7) and the shaped spiral housing (2) that has a feed inlet and outlet are fixedly mounted on this shaped spiral housing seat (10), the screw axis (3) of band helical blade (4) is installed in the shaped spiral housing (2), the outer end of screw axis (3) is connected with drive unit (7) through shaft coupling (6), it is characterized in that: the part downside of the screw axis (3) of screw feeder discharging opening correspondence is one and is the U-lag of one with shaped spiral housing (2), the outside is installed with an overflow casing (5), the pairing screw axis part of discharging opening, center with discharging opening is the boundary, a left side, the rotation direction of right spiral vane (4) is opposite, just, under the effect of antispin blade, powder is forced to upwards overflow discharging opening, shaped spiral housing seat (11) is supported by scale body balance pivot (8) and pressure transducer (9), constitute the lever weigher, the scale body balance pivot (8) of lever is at the overflow vent center, one end of lever is a drive unit, another is disconnected to be storage end, and scale body balance pivot (8) and pressure transducer (9) are fixedly mounted on the helix balance support body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268728 CN2672631Y (en) | 2003-07-07 | 2003-07-07 | Overflow type screw metering scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268728 CN2672631Y (en) | 2003-07-07 | 2003-07-07 | Overflow type screw metering scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672631Y true CN2672631Y (en) | 2005-01-19 |
Family
ID=34473560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03268728 Expired - Fee Related CN2672631Y (en) | 2003-07-07 | 2003-07-07 | Overflow type screw metering scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672631Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101918801B (en) * | 2007-11-20 | 2013-06-19 | 申克公司 | Weigher for bulk material |
| CN103204394A (en) * | 2013-04-28 | 2013-07-17 | 太原市海通自动化技术有限公司 | Micro-amount feeding machine capable of realizing dynamic weighing |
| CN104058114A (en) * | 2013-03-20 | 2014-09-24 | 北京有色金属研究总院 | Device for metal/non-metal powder packaging |
| CN104121974A (en) * | 2013-04-28 | 2014-10-29 | 太仓北新建材有限公司 | Powder weighing device |
-
2003
- 2003-07-07 CN CN 03268728 patent/CN2672631Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101918801B (en) * | 2007-11-20 | 2013-06-19 | 申克公司 | Weigher for bulk material |
| CN104058114A (en) * | 2013-03-20 | 2014-09-24 | 北京有色金属研究总院 | Device for metal/non-metal powder packaging |
| CN103204394A (en) * | 2013-04-28 | 2013-07-17 | 太原市海通自动化技术有限公司 | Micro-amount feeding machine capable of realizing dynamic weighing |
| CN104121974A (en) * | 2013-04-28 | 2014-10-29 | 太仓北新建材有限公司 | Powder weighing device |
| CN104121974B (en) * | 2013-04-28 | 2016-12-28 | 太仓北新建材有限公司 | A kind of powder metage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20110707 |