Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes

A technology of puffing process and dehydration equipment, which is applied in the direction of manufacturing tools, chemical instruments and methods, separation methods, etc., can solve the problem of low production efficiency of filter press, achieve the effect of improving effect and production efficiency, and occupying a small area of ​​equipment

Inactive Publication Date: 2011-05-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of low production efficiency of cylinder/plate-and-frame f

Method used

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  • Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes
  • Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes
  • Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes

Examples

Experimental program
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Effect test

Embodiment 1

[0028] figure 2 is an embodiment of the present invention. Frame 1, motor 2, reduction gear mechanism 3, feeding barrel 4-2 and head pressure control device 10 are not drawn in the figure. The equipment is fixed on the frame 1, the power source motor 2 is connected with the reduction gear mechanism 3 through the transmission device, and the output shaft of the reduction gear mechanism 3 is connected with the double screw 4-1 in the screw barrel pair through a spline sleeve or a coupling Connection, the dehydration barrel, the normal pressure exhaust barrel and the negative pressure exhaust barrel are connected by bolts among the barrel parts in the barrel pair, and the barrel pair can also be designed as an integral type. Open holes in different positions and install dehydration media, which are used as exhaust and dehydration holes. The head pressure control device is connected with the barrel pair by bolts. The twin-screw 4-1 is composed of screw mandrel, forward thread ...

Embodiment 2

[0032] image 3 It is another embodiment of the present invention, which is used for dehydration and expansion of water-containing materials with good fluidity. There is no feeding device at the screw inlet, and gravity feeding is used. In the first area of ​​the screw, the damping element is replaced by a reverse thread, and a reverse thread element is added, which is equivalent to increasing the first area of ​​the screw. The corresponding barrels in the second and third areas of the screw are replaced by negative pressure exhaust barrels with normal pressure exhaust barrels, and kneading block elements are set at the exhaust holes to facilitate smooth exhaust and reduce power consumption . All the other screw thread elements and barrel configurations are the same as those in Embodiment 1.

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PUM

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Abstract

The invention relates to double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes, comprising a power source, a reduction gear mechanism, a screw machine barrel pair, a rack, a forced volume control feeding device, a dehydrating and filtering device, a degassing device, a nose pressure control device and an automatic control system. The power source is connected with two screws in the screw machine barrel pair by virtue of the reduction gear mechanism, the forced feeding device is connected with a machine barrel in the screw machine barrel pair, and the two screws are arranged in the machine barrel; the machine barrel is of a sectional type and is divided into a feeding machine barrel, a dehydrating machine barrel and an exhaust machine barrel; each machine barrel section is externally provided with a heating device, and each machine barrel is internally provided with a cooling water runner used for cooling; the dehydrating and filtering device is connected with the dehydrating machine barrel and is provided with a rapid filter screen replacing device; the degassing device is connected with the exhaust machine barrel, a water ring vacuum pump is utilized to realize negative pressure degasification, and a filter screen and the rapid filter screen replacing device are arranged to prevent materials from flowing out along with the negative pressure; and the nose pressure control device is connected with the outlet of the machine barrel and controls the pressure of the materials at the outlet by adjusting the position of a damping plate.

Description

technical field [0001] The invention relates to a dehydration device for dehydrating and drying materials with high water content to reduce the water content, and also relates to a puffing and forming device for friction crushing, extrusion puffing and cell wall breaking of materials. Background technique [0002] Squeeze dehydration is the use of mechanical compression to separate the viscous solid-liquid mixture into solid and liquid through filter cloth. It is a highly dehydrating solid-liquid separation technology. It is widely used in chemical industry, metallurgy, mining, energy, dyestuff, pigment, inorganic chemical industry, petrochemical industry, biochemical industry, pharmaceutical, food, environmental protection and sewage treatment and other fields. [0003] At present, the commonly used extrusion dehydration devices can be divided into three types: cylinder / plate and frame filter press, belt filter press, continuous screw filter press and so on. [0004] Cartr...

Claims

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Application Information

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IPC IPC(8): B01D29/35B01D29/80B30B9/16
CPCB30B9/16B30B9/121
Inventor 张冰李鑫
Owner BEIJING UNIV OF CHEM TECH
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