CN102513294B - Device for screening powder by convoluted air flow - Google Patents
Device for screening powder by convoluted air flow Download PDFInfo
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- CN102513294B CN102513294B CN2011103829681A CN201110382968A CN102513294B CN 102513294 B CN102513294 B CN 102513294B CN 2011103829681 A CN2011103829681 A CN 2011103829681A CN 201110382968 A CN201110382968 A CN 201110382968A CN 102513294 B CN102513294 B CN 102513294B
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Abstract
The invention discloses a device for screening powder by convoluted air flow, comprising a base and a powder screening room which is arranged on the base and is provided with an upper sealing cover, wherein a power inlet arranged on the upper sealing cover is communicated with an external powder inlet channel through a control valve; a double-circular-arc separation plate is concentrically arranged at the inner side of the upper sealing cover; the powder screening room is internally and horizontally provided with a sample separation sieve; an air outlet pipeline connected with an air outlet of an air filter extends from the bottom of the powder screening room to be communicated with an air nozzle which is arranged below the sample separation sieve; and a powder outlet pipeline which is arranged below the powder screening room is communicated with a negative-pressure collecting device. The device provided by the invention has the advantages that the sample separation sieve can be conveniently exchanged and can be used for accurately screening superfine powder with different grain diameters and precisely controlling the largest grain diameter of finished-product micro-powder; the whole screening device is a closed negative-pressure atmosphere, so that dust pollution caused by screening the powder is effectively prevented; and meanwhile, the pollution to traditional Chinese medicine micro-powder, which is caused by dirt in the air, can be prevented, and a screen can be washed by upwards rushing the air flow in a powder screening process and the problem that the sample separation sieve is blocked is solved.
Description
Technical field
The present invention relates to the screening plant of powder, especially relate to a kind of laboratory gyration airflow sieve powder device commonly used.
Background technology
Superfine communication technique is to be based upon on the micromeritis basis, is accompanied by the breakthrough of the updating of disintegrating process, shattering and related discipline, and in succession occurring of disintegrating apparatus and a new technology growing up.In field of traditional Chinese medicine pharmacy, with the processing mode of traditional Chinese medicine, compare, that superfine communication technique has is cost-saving, be convenient to application, increase the drug absorption rate, improve the advantages such as bioavilability, but in crushing process, because surface-active and the high powder that makes of interfacial characteristics of Ultramicro-powder presents stronger adhesiveness, the phenomenon of screen cloth easily occurs to stop up in mixed powder when sieving, and has affected the sieving rate of medicine.In the herbal pharmaceutical industry, micronizer commonly used is mechanical type or air-stream type ultrafine pulverizer at present, although mix impeller classification function, the average grain diameter of micro mist is reached below 25 μ m, but there is the uneven problem of finished product grain size size, need could accurately control maximum particle diameter by screening.The mixed powder of use for laboratory sieves and still adopts the manual method of sieving of minute sample now, and in sieve powder process, not only dust is large, efficiency is low, and sieving of the above fine powder of 200 order often is difficult to carry out because of the network blocking problem; The ultrasonic vibration sieve that sieve is combined with the ultrasonic vibration principle is by hand also arranged, though efficiency improves than rider, dust pollution and network blocking problem are not resolved at all.
Summary of the invention
The object of the present invention is to provide a kind of easy to operate, sieve powder efficiency is high, the gyration airflow sieve powder device of the applicable laboratory operation of non-environmental-pollution.
For achieving the above object, the present invention can take following technical proposals:
Gyration airflow of the present invention sieve powder device, comprise pedestal and be arranged on the sieve powder chamber with the sealing upper cover on pedestal, is opened in the powder inlet covered in described sealing and advances the powder passage by by-pass valve control and outside and be connected; Be provided with two circular arc dividing plates in described sealing upper cover inner concentric; Be provided with sub-sieve at described sieve powder indoor horizontal; The wind pipe be connected with the air cleaner air outlet is connected with the air nozzle that is arranged on the sub-sieve below from sieving after the extension of bottom, powder chamber is entered; The powder delivery pipeline that is opened in below, sieve powder chamber is connected with negative pressure collecting device; Distance h between the identical two described circular arc dividing plates of radius is 2cm.
Described air nozzle is the hollow pipe that is horizontally set on the sub-sieve below, near on the tube wall of sub-sieve, is being evenly equipped with venthole; Described wind pipe drives rotation by micro machine by transmission mechanism.
The invention has the advantages that the sub-sieve replacing is convenient, can the Ultramicro-powder of different-grain diameter accurately be sieved, accurately control the maximum particle diameter of finished product micro mist; Whole screening plant is an airtight subnormal ambient, effectively prevent from sieving the powder operation and produce the dust pollution air, prevent again that airborne dirt from producing and polluting micro-powder of Chinese herbs simultaneously, upper punch due to air-flow during the sieve powder plays the problem that net effect clearly not there will be sub-sieve to stop up yet, operation is very easy, is applicable to very much laboratory screening Chinese medicine and various plant ultra-micropowder and uses.
Under the effect of negative pressure collecting device, whole sieve powder device is in subnormal ambient, mixed powder to be sieved enters in the sieve powder chamber of sealing through by-pass valve control under suction function, equally in subnormal ambient, the pure air be drawn into through air cleaner forms convolution shape air-flow through sub-sieve between two circular arc dividing plates, with the mixed powder revolution downwards, qualified fine powder is collected from the powder delivery pipeline through screen cloth air-flow, and underproof meal is stayed on sub-sieve.Adopt sieve powder device of the present invention can sieve the above fine powder of 500 orders.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 seals the A of upper cover to view in Fig. 1.
The specific embodiment
As shown in Figure 1, 2, gyration airflow sieve powder device of the present invention, it comprises pedestal 1 and is arranged on the sieve powder chamber 3 that fastening on pedestal 1 has sealing upper cover 2, be opened in the powder inlet of sealing on upper cover 2 and advance powder passage 5 by by-pass valve control 4 and outside and be connected, by-pass valve control 4 is controlled as required into the powder amount; Inner concentric at sealing upper cover 2 is provided with two groups of two circular arc dividing plates 6, and the distance h between the identical two circular arc dividing plates 6 of radius is 2cm; Be horizontally disposed with sub-sieve 7 in sieve powder chamber 3, the specification of sub-sieve 7 can be changed as required; Be provided with air cleaner 8 in the bottom of pedestal 1, the air inlet of air cleaner 8 communicates with atmosphere, the wind pipe 9 be connected with air cleaner 8 air outlets is connected with the air nozzle that is arranged on sub-sieve 7 belows from sieving after the extension of bottom, powder chamber is entered, evenly jet to sub-sieve 7 when guaranteeing work, air nozzle is the hollow pipe 11 that is horizontally set on sub-sieve 7 belows, near on the tube wall of sub-sieve 7, is being evenly equipped with venthole 12; Wind pipe 9 drives rotation by micro machine 13 by transmission mechanism; The powder delivery pipeline 10 that is opened in sieve 3 belows, powder chamber is connected with negative pressure collecting device.
During work, under the effect of negative pressure collecting device, whole sieve powder device is in subnormal ambient, and mixed powder to be fractionated advances powder passage 5 in by-pass valve control 4 enters airtight sieve powder chamber 3 by outside, the abundant atomization of two circular arc dividing plates 6 through arranging with one heart; Wind pipe 9 rotates under the driving of micro machine 13, drive the hollow pipe that offers venthole 12 11 Rotating with Uniform of sub-sieve 7 belows, be ejected in the pure air be drawn into by air cleaner 8 under subnormal ambient to sub-sieve 7, air-flow is upward through sub-sieve 7, form convoluted air-flow on 6, two circular arc dividing plates, air-flow, is collected by negative pressure collecting device through negative pressure powder delivery pipeline 10 downwards by sub-sieve 7 with the fine powder revolution that can cross net, and unsanctioned meal is stayed on sub-sieve 7.
Claims (2)
1. a gyration airflow sieves the powder device, it is characterized in that: it comprises pedestal (1) and is arranged on the sieve powder chamber (3) with sealing upper cover (2) on pedestal (1), is opened in powder inlet on described sealing upper cover (2) and advances powder passage (5) by by-pass valve control (4) and outside and be connected; Be provided with two circular arc dividing plates (6) in described sealing upper cover (2) inner concentric; Be horizontally disposed with sub-sieve (7) in described sieve powder chamber (3); The wind pipe (9) be connected with air cleaner (8) air outlet certainly sieves after the extension of bottom, powder chamber is entered and is connected with the air nozzle that is arranged on sub-sieve (7) below; The powder delivery pipeline (10) that is opened in below, sieve powder chamber (3) is connected with negative pressure collecting device; Distance h between the identical two described circular arc dividing plates (6) of radius is 2cm.
2. gyration airflow according to claim 1 sieve powder device, it is characterized in that: described air nozzle, for being horizontally set on the hollow pipe (11) of sub-sieve (7) below, is being evenly equipped with venthole (12) on the close tube wall of sub-sieve (7); Described wind pipe (9) drives rotation by micro machine (13) by transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103829681A CN102513294B (en) | 2011-11-28 | 2011-11-28 | Device for screening powder by convoluted air flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103829681A CN102513294B (en) | 2011-11-28 | 2011-11-28 | Device for screening powder by convoluted air flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513294A CN102513294A (en) | 2012-06-27 |
| CN102513294B true CN102513294B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103829681A Active CN102513294B (en) | 2011-11-28 | 2011-11-28 | Device for screening powder by convoluted air flow |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070972A (en) * | 2012-12-11 | 2013-05-01 | 河南省康星药业股份有限公司 | Normal temperature preparation method of Radix Scrophulariae and licorice submicron powder, and special bidirectional airflow screener therefor |
| CN103949397B (en) * | 2014-05-05 | 2016-02-24 | 红塔烟草(集团)有限责任公司 | A kind of Apparatus and method for utilizing compressed air system to improve feed separation rate |
| CN103949400B (en) * | 2014-05-05 | 2016-07-06 | 红塔烟草(集团)有限责任公司 | Negative pressure air system is utilized to improve the Apparatus and method for of feed separation rate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201596560U (en) * | 2009-12-17 | 2010-10-06 | 河南省康星药业有限公司 | Air blast ultramicro powder separation device |
| CN202343458U (en) * | 2011-11-28 | 2012-07-25 | 河南省康星药业有限公司 | Swirling airflow powder sieving device |
-
2011
- 2011-11-28 CN CN2011103829681A patent/CN102513294B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201596560U (en) * | 2009-12-17 | 2010-10-06 | 河南省康星药业有限公司 | Air blast ultramicro powder separation device |
| CN202343458U (en) * | 2011-11-28 | 2012-07-25 | 河南省康星药业有限公司 | Swirling airflow powder sieving device |
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| CN102513294A (en) | 2012-06-27 |
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Address after: 451464, No. 2, Hing Road, Baisha Industrial Park, Zhongmu County, Henan, Zhengzhou Applicant after: Henan Health Star Pharmaceutical Co., Ltd. Address before: 451464, No. 2, Hing Road, Baisha Industrial Park, Zhongmu County, Henan, Zhengzhou Applicant before: Henan Kangxing Pharmaceutical Co., Ltd. |
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