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Polymer plastic melt flowing rate meter

A melt flow rate and polymer technology, applied in the measurement of DC flow characteristics, etc., can solve the problems of shortening the service life of the cutting knife, unsatisfactory heat preservation effect, affecting the measurement results, etc., to enhance the heat preservation effect, avoid a large amount of loss, The effect of increasing the measurement accuracy

Inactive Publication Date: 2016-04-20
天津思达瑞工贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of polymer plastics, it is usually necessary to use a melt flow rate instrument to measure the melt flow properties of polymer plastics. After analyzing the flow rates of different grades of polymer plastic melts, we can better Selecting polymer plastics that meet the requirements of the processing technology for post-processing improves the reliability and quality of polymer plastic products, but the insulation effect of the existing melt flow rate meter shell is not ideal, which will cause heat loss and waste energy; Moreover, the cutting knife of the existing melt flow rate meter is controlled by a motor to cut material through rotation. This cutting method will cause the rotating shaft to be subjected to a large torsion force, which greatly shortens the service life of the cutting knife; and heating After the plastic material in the barrel melts, there will be air bubbles inside, and the air bubbles in the melt cannot be discharged, thus affecting the measurement results

Method used

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  • Polymer plastic melt flowing rate meter

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Effect test

Embodiment 1

[0010] The present invention includes a heat preservation shell 1, a heating barrel 2, a knife plate 3, a knife groove 4, a discharge port 5, a cutting knife 6, a die 7, a piston 8, a connecting rod 9, a weight seat 10, and a vacuum heat preservation chamber 11. Vacuumizing port 12, pneumatic control element 13, and air pumping channel 14. When installing, first set the vacuuming port 12 on the heat-insulating shell 1, and then install the heating barrel 2 inside the heat-insulating shell 1. At this time A vacuum insulation cavity 11 is formed between the heat preservation shell 1 and the heating barrel 2, the die 7 is installed on the bottom of the heating barrel 2, and the knife groove 4 and the discharge port 5 are set inside the knife plate 3, and then the knife The plate 3 is installed at the lower end of the heat preservation shell 1, the cutting knife 6 is installed in the knife groove 4 through the pneumatic control element 13, and the air extraction channel 14 is opene...

Embodiment 2

[0012] When in use, first add an appropriate amount of polymer plastic particles into the heating barrel 2, then install the piston 8 in the heating barrel 2, turn on the power, the heating barrel 2 heats the polymer plastic particles to melt them, and passes through the air pumping channel 14 After extracting the gas in the melt, put the weight on the weight base 10, and start timing at this time, the pressure of the weight makes the piston 8 move downward, and the melt is squeezed and flows out from the die 7, reaching At a predetermined time, the pneumatic control element 13 controls the cutting knife 6 to move laterally to cut off the melt, and weighs the cut melt to complete the measurement process of the entire melt flow rate.

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Abstract

The present invention provides a polymer plastic melt flowing rate meter with a characteristic of high measurement precision. The polymer plastic melt flowing rate meter comprises a thermal insulation housing, a material heating cylinder, a cutter plate, a cutter groove and the like, wherein the material heating cylinder is arranged inside the thermal insulation housing, the cavity between the thermal insulation housing and the material heating cylinder is a vacuum thermal insulation chamber, the thermal insulation housing is provided with an evacuation port, the bottom portion of the material heating cylinder is provided with a die, the lower end of the thermal insulation housing is provided with the cutter plate, a material cutting cutter is arranged inside the cutter groove through a pneumatic control element, a piston is arranged inside the material heating cylinder, the upper end of the piston is connected to a connection rod, a weight seat is arranged on the upper end of the connection rod in a screwed connection manner, and the centers of the piston and the connection rod are provided with gas suction channels. According to the present invention, the vacuum thermal insulation chamber is arranged, and the vacuum thermal insulation chamber and the thermal insulation housing are co-used to carry out thermal insulation on the material heating cylinder, such that the thermal insulation effect is further enhanced, and the heat loss is substantially avoided so as to save the energy source.

Description

technical field [0001] The invention relates to the technical field of polymer plastic production, in particular to a polymer plastic melt flow rate meter. Background technique [0002] In the production process of polymer plastics, it is usually necessary to use a melt flow rate instrument to measure the melt flow properties of polymer plastics. After analyzing the flow rates of different grades of polymer plastic melts, we can better Selecting polymer plastics that meet the requirements of the processing technology for post-processing improves the reliability and quality of polymer plastic products, but the insulation effect of the existing melt flow rate meter shell is not ideal, which will cause heat loss and waste energy; Moreover, the cutting knife of the existing melt flow rate meter is controlled by a motor to cut material through rotation. This cutting method will cause the rotating shaft to be subjected to a large torsion force, which greatly shortens the service l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/04
Inventor 纪洪绪
Owner 天津思达瑞工贸有限公司
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