Thread plug-in mounting type speed sensitive load control valve

A sensitive load, threaded insertion technology, applied in variable capacity pump components, components of pumping devices for elastic fluids, machines/engines, etc., can solve the problems of high cost, achieve low cost, prevent overload flameout, The effect of easy operation

Pending Publication Date: 2019-09-27
NINGBO KETA HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electronic control system exists, but the cost is high

Method used

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  • Thread plug-in mounting type speed sensitive load control valve

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, the threaded cartridge speed-sensitive load control valve in this embodiment includes a valve sleeve 5, a screw sleeve 15, an adjustment rod 16, a valve core 6, a throttle plate 4, a first spring seat 121, and a second spring seat 12. and spring 13.

[0024] The valve sleeve 5 is hollow in the axial direction, and the first oil port 1b and the second oil port 1c are opened in the lateral direction from front to back; A third oil port 1d is opened laterally.

[0025] The adjusting rod 16 is arranged in the screw sleeve 15 sealingly and the front end extends into the inner cavity formed by the screw sleeve 15 and the valve sleeve 5; the adjusting rod 16 can move forward and backward to adjust the stroke of the valve core 6.

[0026] The spool 6 is located in the inner cavity formed by the screw sleeve 15, the...

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Abstract

The invention discloses a thread plug-in mounting type speed sensitive load control valve which is characterized by comprising a valve sleeve, a thread sleeve, an adjusting rod, a valve element, a throttling piece, a first spring seat, a second spring seat and a spring, wherein the valve sleeve is axially hollow; a first oil port and a second oil port are sequentially formed in the lateral direction of the valve sleeve from front to back; the thread sleeve is axially hollow, is arranged at the rear end of the valve sleeve and forms a cavity with the valve sleeve; a third oil port is formed in the lateral direction of the thread sleeve; the valve element is arranged in the cavity formed by the thread sleeve and the valve sleeve; the front end of the valve element is in sliding fit with the valve sleeve; the rear end of the valve element is arranged on the periphery of the front end of the adjusting rod in a sleeving manner; and a first oil through hole matched with the first oil port and a second oil through hole communicating with the third oil port are sequentially formed in the valve element in the lateral direction from front to back. Compared with an electric control system applied to variable control of a hydraulic pump driven by an internal combustion engine, the thread plug-in mounting type speed sensitive load control valve is low in cost and stable and reliable in operation.

Description

technical field [0001] The invention relates to a control valve, which can be applied to a hydraulic pump driven by an internal combustion engine to adjust the deflection angle of the variable pump and control the load. Background technique [0002] Before the load of the internal combustion engine surges beyond the engine power domain, it needs to be controlled urgently to prevent the internal combustion engine from being overloaded and stalled. At present, it is all realized through a complex electronic control system. The electric control system exists, and the deficiency of high cost. How to automatically adjust the deflection angle of the variable pump to achieve global optimal matching with the internal combustion engine through simple hydraulic control has always been a research topic for researchers in this field. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a screw-in plug-in speed sensitive pump tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/10
CPCF04B53/10
Inventor 陈磊卞亚琴邱元科
Owner NINGBO KETA HYDRAULICS
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