Unlock instant, AI-driven research and patent intelligence for your innovation.

Arrangement for degassing control

A technology for controlling valves and control units, which is applied in pump control, pumps for special fluids, textiles and papermaking, and can solve problems such as impossibility to control gas discharge

Inactive Publication Date: 2015-04-22
VALMET TECH OY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these structures do all suggest dilution of the pulp, and in addition they are unlikely to control gas exit from the pulp pumping chamber

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Arrangement for degassing control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 An exemplary embodiment of a pump arrangement 1 according to the invention is shown schematically. The structure comprises a housing 2 in which a pulp pump 4 for pumping pulp is arranged. The pulp pump 4 has an inlet 10 into which pulp is fed and an outlet 11 out of which it is fed under pressure. The pulp pump 4 is driven by a motor 12 via a shaft 3 .

[0018] In this application, housing 2 is defined as the housing of the entire pulp pump 4, which includes a pump housing 2a and a shaft housing 2b, in which the pulp is affected by the pumping action of the pump wheel (not shown), while the shaft The housing covers the part of the shaft 3 adjacent to the pump housing 2a. Typically, an overall housing can be made of several interconnected housings, but in this application the term housing 2 is meant to include all of these different housings, e.g. pump housing 2a and shaft housing 2b, even though housing 2 can be made of separate but interconnected Component...

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
Login to View More

PUM

No PUM Login to View More

Abstract

Method and arrangement (1) for pumping pulp, which arrangement comprises a housing (2) in which a pulp pump (4) for pumping pulp is arranged, wherein a vacuum pump (5) for degassing the pulp inside the housing (2) is connected via a conduit (6)to a gas outlet (7) of the housing (2).A control unit (13)is arranged to control the pump speed of the vacuum pump(5)and in that the control unit (13)is connected to a sensor (8) that is arranged in connection to the gas outlet (7) for detecting the presence of pulp in the conduit (7),wherein the control unit (13)is arranged to lower the pump speed of the vacuum pump(5)if pulp is detected in the conduit(6).

Description

technical field [0001] The present invention relates to a structure during the pumping of pulp, and in particular the present invention relates to a structure for degassing control during the pumping of pulp, wherein the pulp is pumped while being degassed. Background technique [0002] In pulp pumping configurations, gases (eg air) accompanying the pulp can cause problems. Typically, gas tends to accumulate into bubbles that accumulate upstream of the pump. Therefore, vacuum pumps are often connected via lines to the pulp pumping area in order to create a negative pressure which causes the unwanted gases to escape. [0003] The problem with this construction is that the pulp will follow the gas into the vacuum pump lines and cause problems. Firstly, the pulp will completely or at least severely block the escape of gas, so that air bubbles will still accumulate in the pulp being pumped. In addition, pulp can be sucked into the vacuum pump, thereby impairing the function o...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D21D5/26F04D7/04
CPCF04D15/0066D21D5/26F04D7/04F04D9/003
Inventor M·蒙塞尔P·达尼尔森
Owner VALMET TECH OY