Positive pressure method for detecting filter fabric performance

A detection method and filter cloth technology, applied in the direction of filtration and separation, separation methods, chemical instruments and methods, etc., can solve the problems of pipeline lint blockage, pipeline blockage, heavy weight, etc., to ensure long-term normal operation and large detection pressure difference , the effect of wide detection range

Inactive Publication Date: 2006-06-21
ZHEJIANG HUAZHANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the filter cloth performance negative pressure test method is applied to wool filter cloths that are prone to shedding, such as paper-making felts that are close to the end of their use, the pipes are easily blocked by the suctioned fluff; or when used in low temperature environments, it is easy to cause The icing phenomenon caused by the rising freezing point will cause pipeline blockage, which will affect the detection accuracy
In addition, the negative pressure detection system requires a vacuum pump, which makes the entire detection system bulky, heavy, and difficult to move.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Positive pressure method for detecting filter fabric performance
  • Positive pressure method for detecting filter fabric performance
  • Positive pressure method for detecting filter fabric performance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The detection system adopted by the filter cloth performance positive pressure detection method of the present invention is a positive pressure detection system, which is mainly composed of a probe, a sealing device between the filter cloth and the probe, a pressure sensor 8, a flow sensor 9, a pressure regulating valve 10, a surge tank 11, a compression Pump, controller 15 and power supply form. Referring to accompanying drawing 1, the probe of the detection system of the present embodiment adopts the No. 1 probe 71 that is arranged longitudinally along the filter cloth 4 into five air pressure independent, controllable detection areas 1-5, and there are five independent detection areas 1-5 The two detection areas are the closed second ring-shaped detection area 2 and the fourth ring-shaped detection area 4, and these two ring-shaped detection areas 2, 4 form closed planes to the third detection area 3 and the fifth detection area 5 respectively. Surrounded; five detec...

Embodiment 2

[0044] Referring to Fig. 2, the probe of the detection system of the present embodiment selects No. 2 probe 72, and the probe 72 is arranged longitudinally along the filter cloth 4 into three air pressure independent, controllable detection areas 1-3, wherein the second detection area 2 is a closed The ring-shaped detection area forms a closed plane surrounding the third detection area 3, and the detection area of ​​the first detection area 1 is 100mm 2 , the detection area of ​​the second detection zone 2 is also 100mm 2 , the detection area of ​​the third detection zone 3 is 10mm 2 . The three detection zones 1-3 are equipped with three pressure sensors 8 and three flow sensors 9 .

[0045] Other components and connections of the detection system in this embodiment are the same as those in Embodiment 1.

[0046] The detection method of this embodiment is used when the felt and wet paper are just separated on the press section of the paper machine in the paper mill, and th...

Embodiment 3

[0052] see image 3 , the probe of the detection system in this embodiment selects No. 3 probe 73, and the probe 73 is arranged longitudinally along the filter cloth 4 into two air pressure independent, controllable detection areas 2, 3, wherein the second detection area 2 is a closed ring The detection area forms a closed plane surrounding the third detection area 3, and the detection area of ​​the second detection area 2 is 100mm 2 , the detection area of ​​the third detection zone 3 is 10mm 2. The two detection zones 2, 3 are equipped with two pressure sensors 8 and two flow sensors 9.

[0053] Other components and connections of the detection system in this embodiment are the same as those in Embodiment 1.

[0054] The specification used in the solid-liquid separation of domestic sludge by the detection method of this embodiment is 380 g / m 2 Polypropylene filter cloth 4, the surface of the filter cloth is smooth, and the performance indicators that need to be known most...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a positive pressure detecting method of filter cloth property, which comprises the following parts: probe, pressure sensor, flow sensor, pressure adjustment valve, stabilized tank and controller to form testing system, wherein the testing system is positive pressure detecting system, which contains filter cloth and probe sealing device and positive pressure air source; the filter cloth air bears 0.01-1.5 Mpa pressure; at least two property indexes of filter cloth permeating degree, liquid content, smooth property, total elasticity and surface elasticity are detected through relative various air flow and pressure separately. The invention packages the detecting system structure, which is convenient to be on-line and moving detection of filter cloth property.

Description

technical field [0001] The invention relates to a filter cloth performance detection method, in particular to a filter cloth performance positive pressure detection method for detecting the comprehensive performance of filter cloths used in papermaking, chemical industry and other industries. Background technique [0002] Paper mills, chemical plants and other enterprises with filtration processes consume a large amount of filter cloth every year. In the process operation, real-time understanding of the air permeability, flatness, overall elasticity, surface elasticity and liquid content of the filter cloth, etc., to correctly grasp the change trend of the filter cloth performance, and to reasonably determine the replacement time of the filter cloth is to ensure the filtration. It is an important link in the production efficiency, product quality and production cost of the process. [0003] Chinese patent application CN200410042481.9 discloses an online detection method for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): G01N7/10B01D35/00B01D39/00G01N15/08G01N33/36
Inventor 唐志超程剑冰胡杭滨钟天平余真德胡佳蓓朱根荣毛怡红
Owner ZHEJIANG HUAZHANG TECH
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