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Operational control device for a positive-displacement pump, pump system and method for operating the like

A positive displacement pump, operation control technology, applied in the field of pump system and operation pump system, can solve the problems of high equipment cost, poor dynamics, etc., and achieve the effect of short acceleration or start-up time

Inactive Publication Date: 2015-05-06
ALLWEILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, such techniques also have definite drawbacks: high equipment overhead and poor dynamics

Method used

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  • Operational control device for a positive-displacement pump, pump system and method for operating the like
  • Operational control device for a positive-displacement pump, pump system and method for operating the like
  • Operational control device for a positive-displacement pump, pump system and method for operating the like

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Embodiment Construction

[0036] figure 1 The operating control device according to a preferred embodiment of the invention in the case of a pump system is shown in a schematic block diagram. exactly figure 1 The block diagram (indicated by the dotted border 10) shows an operating control device with a control unit 12, typically implemented as an otherwise known frequency converter, for speed regulation and control of a downstream screw pump 14, which in figure 1 Within the scope of the system for conveying coolant shown in the schematically shown machine tool 16 (typical example a drilling or milling machine with exchangeable tool joints and corresponding variable conveying flow requirements for the respective tools ) work together.

[0037] Within the scope of the preferred embodiment shown, an operating mode section 18 in the form of a control unit (typically realized by hardware or component assemblies) is connected in front of the control section 12, which allows, within the scope of the inventi...

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PUM

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Abstract

The operation controlling device comprises a pump motor with an actuation unit (12), particularly for setting the rotational speed for the pump motor, and a state sensor unit (20) for detecting an actual operating parameter, particularly operating pressure of the positive-displacement pump (14). An operating mode unit (18) is provided, which is configured, such that an actuating mode for the pump motor is set by the actuating unit below an operating-parameter threshold value. The operating-parameter threshold value is fixed or is calculated as a value or a pump parameter which is correlated.

Description

technical field [0001] The invention relates to an operating control device according to the preambles of the main claim, also to a pump system and to a method for operating a pump system. Background technique [0002] The pumps used are of particular significance in the technical context of applying coolants and / or lubricants to machine tools at operating pressures which may reach 25 bar or higher. In particular, such high cooling performances and correspondingly high processing speeds can be achieved in the order of magnitude mentioned in combination with industrial drilling, milling or tapping processes and hydraulic drives. [0003] For high-pressure coolant delivery, positive displacement pumps are used, for example, in machine tools, since they can achieve a possible hydraulic pressure of up to 80 bar with a single compact unit and thus have relatively low pressure in the high-pressure section mentioned. Advantages over other conventional centrifugal pumps. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C14/06F04C14/08F04B49/02F04B49/06
CPCF04B49/022F04B49/065F04C14/06F04C14/08F04C2240/81F04C2270/18F04C2/16F04B7/02
Inventor S.沃纳M.杰克尔C.霍普夫
Owner ALLWEILER