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A spring loaded device

A technology of loading device and loading rod, which is applied in the field of pulverized coal crushing and grinding, can solve the problems of complex hydraulic system, etc., and achieve the effect of convenient operation and simple structure

Active Publication Date: 2017-07-25
SHANGHAI YIFENG ELECTRICAL & MECHANICAL TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the hydraulic loading method is that the hydraulic system is relatively complicated, the hydraulic station must always be in working condition, the loading force is basically constant, and will not automatically adjust with the change of the feed amount

Method used

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  • A spring loaded device
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Embodiment Construction

[0017] In order to make the present invention more obvious and understandable, a preferred embodiment is hereby described in detail in conjunction with the accompanying drawings as follows:

[0018] First, according to the extrusion force required when the grinding roller 20 crushes and grinds the raw coal 21 into qualified coal powder, select a suitable disc spring group 9 so that the maximum and minimum working loads of the disc spring group 9 meet the requirements of the grinding roller 20. Requirements. combine figure 1 , first follow the figure 1 Assemble the spring loading device, because the loading force generated by the disc spring group 9 is very large, it is necessary to tighten the loading nut 8 by means of the hydraulic cylinder 12, the hydraulic cylinder 12 is a ring structure, and there are 8 evenly distributed wrenches on the loading nut hole. When tightening, the hydraulic cylinder 12 is set on the outside of the loading nut 8 first, then the lock nut 7 is ...

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Abstract

A spring loading device provided by the invention includes a loading rod, a fixing plate, a fixing bolt, a fixing nut, a spring sleeve, an end cover, a lock nut, a loading nut, a disc spring group, a sealing ring, a hydraulic cylinder, and a manual oil pump And a wrench, characterized in that: the loading force generated by the disc spring group after being compressed is proportional to the compression amount of the disc spring group, and is transmitted to the grinding roller through the loading rod to crush the raw coal. When the raw coal is fed The loading force can be automatically adjusted when the volume changes. At the same time, the position of the loading nut screwed into the loading rod can be adjusted through the manual oil pump and hydraulic cylinder, thereby changing the initial compression of the disc spring group to set the initial loading force and the size of the initial loading force. It can be easily determined from the reading of the manual oil pump and the area of ​​the hydraulic cylinder. The invention overcomes the defects and shortcomings existing in the loading device adopting the hydraulic loading mode, can realize automatic adjustment of the loading force along with the change of the feeding amount, has a simple structure and is convenient to operate.

Description

technical field [0001] The invention relates to a spring loading device, which is mainly used for loading the grinding pressure of grinding rollers of medium-speed coal mills in thermal power plants, and belongs to the technical field of pulverized coal crushing and grinding. Background technique [0002] Medium-speed coal mills are widely used in thermal power plants. Raw coal is squeezed, crushed and ground between the grinding rollers and bowls of the medium-speed coal mill, and finally becomes coal powder suitable for boiler combustion. In order to achieve this purpose, sufficient pressure must be applied to the grinding roller. Since the required pressure is relatively large, the usual loading device adopts a hydraulic loading method. The disadvantage of the hydraulic loading method is that the hydraulic system is relatively complicated, the hydraulic station must always be in working condition, the loading force is basically constant, and will not be automatically adju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C15/04
Inventor 陈刚李大正何锋发
Owner SHANGHAI YIFENG ELECTRICAL & MECHANICAL TECH DEV
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