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Pressurized rotary screw powder feeder

A feeder and powder technology, which is applied in the field of pressurized rotary screw powder feeder, can solve the problems of dragging enterprises to meet environmental protection standards, hindering the improvement of production efficiency of enterprises, and difficult to realize the adjustment of conveying capacity.

Active Publication Date: 2014-05-07
XIAN ORIGIN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dry coal gasification technologies such as Shell technology, GSP technology and H-TL technology use combined alternating pressure tanks to transport pulverized coal for powder raw material transportation, which requires high investment and complicated control, and it is easy to cause pipeline blockage and difficult to unblock. It is difficult to adjust the transmission capacity on the original equipment, requiring multiple investments, etc., which indirectly affects the long-term stable operation of coal gasification technology
In addition, there are similar problems in the transportation of some powder raw materials in the petrochemical, plastic, and pharmaceutical industries. For example, the manual operation of key sections greatly increases unsafe factors, and the powder raw material transportation equipment needs to be re-invested when the production scale of the enterprise is upgraded. These are all obstacles. The stumbling blocks of improving the production efficiency of enterprises, dragging enterprises to meet environmental protection standards, and reducing the technological content of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: pressurized rotary screw powder feeder of the present invention

[0076] The pressurized rotary screw powder feeder is composed of a speed regulating motor, a powder bin and a screw powder feeder.

[0077] The powder silo includes a powder silo body 14, a powder silo cover 15 and a sealing flange 23; a pneumatic stirring mechanism 16, a stirring air source 17, a powder silo inlet 18, Low material level probe 19, high material level probe 20, automatic filling control mechanism 21 and pressure gauge 22;

[0078] The screw powder feeder includes a speed regulating motor 1, a stepped lifting mechanism 2, a stepped lifting mechanism adjusting switch 3, an integral lifting mechanism 4, an integral lifting mechanism adjusting switch 5, a connecting bearing with a sealing ring 6, a rotating Screw 7, screw feeder hollow cavity 8, screw feeder feeding cavity 9, positioning rod 10, arc-shaped spring piece 11, sail-type blade 12 and lifting spring 13;

[0079] When...

Embodiment 2

[0087] Embodiment 2: pressurized rotary screw powder feeder of the present invention

[0088] Use the same pressurized rotary screw powder feeder as in Example 1 to transport pulverized coal and limestone powder mixture under the conditions of the following raw material parameters and feeder operating parameters:

[0089] Table 3: Raw material parameters

[0090]

[0091] Table 4: Feeder operating parameters

[0092]

[0093] The material is qualified pulverized coal with a particle size of ≥200 mesh and ≥80% by weight, and limestone powder with a particle size of ≤100 mesh and ≥10% by weight. Mix them evenly and fill them in the powder bin of the feeder. The mixing mechanism fills the powder bin with carbon dioxide, the overall lifting mechanism adjusts the distance between the top of the sail blade and the inner wall of the feeding chamber h=25.00mm, the speed of the speed regulating motor is adjusted to 40.0r / min, and the powder flow at the outlet of the rotary screw...

Embodiment 3

[0094] Embodiment 3: Pressurized rotary screw powder feeder of the present invention: pulverized coal mixed with coal, limestone powder, carbon dioxide.

[0095] Use the same pressurized rotary screw powder feeder as in Example 1 to transport pulverized coal mixed coal and limestone powder mixture under the conditions of the following raw material parameters and feeder operating parameters:

[0096] Table 5: Raw material parameters

[0097]

[0098] Table 6: Feeder parameters

[0099]

[0100] The particle size is ≥150 mesh, ≥80% by weight qualified pulverized coal mixed with coal and the particle size is ≤100 mesh, ≥10% by weight limestone powder is mixed and filled in the feeder's own powder bin, sealed powder bin, and the powder is fed by the pneumatic stirring mechanism The warehouse is filled with nitrogen with a small flow rate, the overall lifting mechanism adjusts the distance between the top of the sail blade and the inner wall of the feeding chamber h=60.00mm,...

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Abstract

The invention relates to a pressurized rotary screw powder feeder. The feeder is composed of a speed adjustable motor, a powder chamber and a screw powder feeder body. The pressurized rotary screw powder feeder is capable of conveying a variety of powder such as coal powder, mineral powder, cement and lime; can automatically fill feed in a closed process and is good in environmental protection effects and easy to operate and control; can achieve pneumatic pressurized conveying at the pressure of 5.0MPa and above and is applicable to the section requiring pressure of a post-system; has a simple and reliable pneumatic mixing mechanism to effectively avoid powder bridging or wall hanging and to prevent powder clogging.

Description

【Technical field】 [0001] The invention belongs to the technical field of powder conveying. More specifically, the present invention relates to a pressurized rotary screw powder feeder. 【Background technique】 [0002] The powder industry is related to every corner of human production and life. Powder products are inseparable from daily necessities of life. The production of petrochemical, mining, pharmaceutical, steel, coal, cement and other industries that are closely related to human activities cannot do without powder. Bulk products and powder-related production or delivery equipment. Under the background of the rapid development of science and technology today, the powder making equipment is becoming more and more advanced and finer, and the requirements for powder storage and transportation are getting higher and higher. The powder industry is a major pollution source of dust, and dust pollution is easy to solidify. It is difficult to eliminate in a short period of tim...

Claims

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Application Information

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IPC IPC(8): B65G65/46
Inventor 崔意华徐红东刘军林益安徐宏伟朱春鹏门长贵赵蒙曾梅
Owner XIAN ORIGIN CHEM TECH
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