CN103029927B - Novel powder polyvinyl alcohol grain feeder and feeding process - Google Patents
Novel powder polyvinyl alcohol grain feeder and feeding process Download PDFInfo
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- CN103029927B CN103029927B CN201210529101.9A CN201210529101A CN103029927B CN 103029927 B CN103029927 B CN 103029927B CN 201210529101 A CN201210529101 A CN 201210529101A CN 103029927 B CN103029927 B CN 103029927B
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- polyvinyl alcohol
- barrel body
- feeder
- discharging opening
- novel powder
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Abstract
The invention discloses a novel powder polyvinyl alcohol grain feeder, which is characterized by comprising a barrel body and a discharging opening, wherein a feeding opening is arranged at the upper part of the barrel body; a charging opening is circular; the diameter of the barrel body is 300-320 mm; the bottom of the barrel body is connected with one rectangular discharging opening; and the edge length of the barrel body is 130-150 mm, the edge width is 8-10 mm and the height is 8-10 mm. When the feeder disclosed by the invention is used for feeding, glue grains can slowly fall into low-temperature pure water, so as to avoid coated and skin dissolved endobiosis phenomena; the glue grains can be sufficiently swelled, blocks are reduced and the viscosity of glue can reach to process requirements; and furthermore, a process of filtering by using a filtering net is reduced, so that the efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of novel powder polyvinyl alcohol grain feeder and material feeding process.
Background technology
Current batch manufacturing magnetic ferrite magnetic core both at home and abroad has two kinds of different manufacturing process, i.e. coprecipitation technology and oxide process.Adopt conventional ceramic technique to produce soft magnetic ferrite, raw MAT'L, main formula and trace mineral supplement are internal causes, and shaping is another key link ensureing product design.FERRITE CORE product of a great variety, different sizes, forming method is very not identical yet.Having of commonly using in production is dry-pressing formed, hot die-casting molding, isostatic compaction etc. are several, and with dry-pressing formed the most general.
Dry-pressing formed is a kind of method extensively adopted during soft magnetic ferrite is produced.Comparatively large to lateral dimension especially, longitudinal size is less and the simple middle-size and small-size product of side view is the most suitable.Dry-pressing formed is pressurizeed by the pellet in mould.In order to make shaping after green compact there is certain mechanical strength, unlikely cracked before sintering, must produce soft magnetic ferrite pellet time add adhesives, mainly adopt polyvinyl alcohol in industry.
Polyvinyl alcohol is organic compound, white plates, cotton-shaped or pulverulent solids, tasteless.Material should first under agitation add in room temperature water by dissolve polyvinyl alcohol, and heat up after being uniformly dispersed accelerate dissolution again.During dissolving, while stirring these product slowly can be added fully swelling in the cold water of about 20 DEG C, dispersion and the effusion of volatile matter (is sure not to add this product in the water more than 40 DEG C directly to dissolve, to avoid occurring bag-like and Pi Rong endobiosis), then be warmed up to about 95 DEG C accelerate dissolution, and be incubated 2 ~ 2.5 hours, until solution is no longer containing molecule, then after 28 order corrosion-resistant steel impurity screenings, can be for subsequent use.
Because powdery polyethylene alcohol is very fast in the process falling speed be added to the water in this process, thus have impact on its dissolution velocity, easily produce caking, finally affect the solubility of glue.Therefore, be necessary to carry out deep research to this problem.
Summary of the invention
The object of the invention is to overcome falling speed when above-mentioned powdery polyethylene alcohol dissolves and comparatively fast produce the problem that caking affects dissolution velocity, there is provided one that polyvinylalcohol solids shape thing can be made slowly to drop in water, reduce caking, improve novel powder polyvinyl alcohol grain feeder and the material feeding process of the solubility of glue.
Technical scheme of the present invention is as follows:
A kind of novel powder polyvinyl alcohol grain feeder, it is characterized in that, comprise cylindrical shell and discharging opening, cylindrical shell top is spout, inlet point is rounded, and its diameter is 300-320mm, and bottom is connected with an oblong discharging opening, its length of side is 130-150mm, and hem width is 8-10mm, is highly 8-10mm.
The technique using above-mentioned feeder to carry out feeding intake is:
(1) powdered polyvinyl alcohol needed for weighing is for subsequent use;
(2), above the cold water above-mentioned feeder being placed in 20-25 DEG C, the polyvinyl alcohol weighed up is added in above-mentioned feeder, above-mentioned cold water is stirred simultaneously;
(3) drop into after in water until whole polyvinyl alcohol, be warming up to 90-100 DEG C with the speed of 2-5 DEG C, insulation 1-2h.
Under above-mentioned technique, glue particle slowly can fall into low-temperature pure water, thus avoids occurring bag-like and Pi Rong endobiosis, makes glue particle can be fully swelling, and caking reduces, and glue viscosity can reach technological requirement; In addition, The present invention reduces the technique using filter screen filtration, thus substantially increase efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of feeder of the present invention.
Detailed description of the invention
In order to be that the present invention can statement clearly, below in conjunction with embodiment and accompanying drawing, the invention will be further described.
Embodiment:
As shown in Figure 1, a kind of novel powder polyvinyl alcohol grain feeder, it is characterized in that, comprise cylindrical shell 100 and discharging opening 200, cylindrical shell top is spout 101, spout is rounded, its diameter is 320mm, and cylinder body bottom is connected with rectangular discharging opening 200, and its length of side a is 150mm, hem width b is 10mm, and height c is 10mm.
Owing to having less discharging opening, during feeding, the speed that powdered polyvinyl alcohol enters in water is restricted, under agitation, powdered polyvinyl alcohol can Fast-swelling and be unlikely to caking.
Below charging technology of the present invention is described, namely carries out feeding with above-mentioned feeder:
Powdered polyvinyl alcohol 35000g needed for weighing is for subsequent use;
Above the cold pure water above-mentioned feeder being placed in 500kg20 DEG C, the polyvinyl alcohol weighed up is divided and adds for three times in above-mentioned feeder, above-mentioned cold water is stirred simultaneously;
Drop into after in water until whole polyvinyl alcohol, be warming up to 90 DEG C with the speed of 5 DEG C, insulation 2h.
The viscosity of gained glue is 50-95mPa.s, meets technological requirement completely.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the content disclosed in this embodiment.The equivalence completed under not departing from spirit disclosed in this invention so every or amendment, all fall into the scope of protection of the invention.
Claims (1)
1. a novel powder polyvinyl alcohol grain feeder, is characterized in that, comprises cylindrical shell and discharging opening, and cylindrical shell top is inlet point, inlet point is rounded, and its diameter is 300-320mm, and bottom is connected with an oblong discharging opening, its length of side is 130-150mm, and hem width is 8-10mm, is highly 8-10mm; Its feeding comprises the following steps: the powdered polyvinyl alcohol needed for weighing is for subsequent use; Above the cold water described feeder being placed in 20-25 DEG C, the polyvinyl alcohol weighed up is added in above-mentioned feeder, above-mentioned cold water is stirred simultaneously; Drop into after in water until whole polyvinyl alcohol, be warming up to 90-100 DEG C with the speed of 2-5 DEG C, insulation 1-2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529101.9A CN103029927B (en) | 2012-12-10 | 2012-12-10 | Novel powder polyvinyl alcohol grain feeder and feeding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529101.9A CN103029927B (en) | 2012-12-10 | 2012-12-10 | Novel powder polyvinyl alcohol grain feeder and feeding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103029927A CN103029927A (en) | 2013-04-10 |
| CN103029927B true CN103029927B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210529101.9A Active CN103029927B (en) | 2012-12-10 | 2012-12-10 | Novel powder polyvinyl alcohol grain feeder and feeding process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332412A (en) * | 2013-07-17 | 2013-10-02 | 佳施加德士(苏州)塑料有限公司 | Stainless steel hopper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254610Y (en) * | 2008-08-07 | 2009-06-10 | 海宁洁宇环保设备有限公司 | Distributor for alumina powder |
| WO2009147567A2 (en) * | 2008-05-26 | 2009-12-10 | Moretto S.P.A. | A hopper structure |
| CN102029704A (en) * | 2010-10-30 | 2011-04-27 | 浙江德斯泰塑胶有限公司 | Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process |
| CN201935574U (en) * | 2010-12-08 | 2011-08-17 | 成都光华科技发展有限公司 | Quantitative particle feeding device |
-
2012
- 2012-12-10 CN CN201210529101.9A patent/CN103029927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009147567A2 (en) * | 2008-05-26 | 2009-12-10 | Moretto S.P.A. | A hopper structure |
| CN201254610Y (en) * | 2008-08-07 | 2009-06-10 | 海宁洁宇环保设备有限公司 | Distributor for alumina powder |
| CN102029704A (en) * | 2010-10-30 | 2011-04-27 | 浙江德斯泰塑胶有限公司 | Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process |
| CN201935574U (en) * | 2010-12-08 | 2011-08-17 | 成都光华科技发展有限公司 | Quantitative particle feeding device |
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| CN103029927A (en) | 2013-04-10 |
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