压紧机构 presser bar mechanisms
弹簧式压紧机构，实现快速换筛。
根据用户的需要，可以采用碟形弹簧加载的填料压紧机构，使阀杆填料的密封更加可靠。
Based on customers requirement, a packing tightening design may be employed to obtain more reliable stem packing seal, which is loaded by bevelling spring.
本机由机头、机架、电控柜、托料架等组成，机头分别具有定位机构、压紧机构、加热机构等。
The machine is made up of machine head, machine frame, electric controlling box and bracket, etc. There are orientation part, clamp part and heating part on the machine head.
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