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Title:
MANUAL PISTON VALVE APPARATUS CAPABLE OF RESPECTIVELY SEALING UPPER AND LOWER VALVE SEAT
Document Type and Number:
WIPO Patent Application WO/2018/036267
Kind Code:
A1
Abstract:
A manual piston valve apparatus capable of respectively sealing an upper and lower valve seat, comprising a handle (1), a support frame (3), a valve rod (4), a valve body (5), and a flow channel (10), and also comprising a push rod (2) and a valve seat (6), the push rod being connected to the support frame by means of a screw thread structure; guidance and stability are good, and the valve seat uses PEEK material; a flow channel hole (7), an attenuating groove (8), and a plug hole (9) are arranged on the valve seat, the flow channel hole being disposed in the valve seat along the axial direction of the flow channel, the plug hole being disposed along the axial direction of the valve rod, and the attenuating groove being disposed in a direction perpendicular to the flow channel hole and the plug hole; the valve seat enables the valve operating torque to be reduced and the valve seat parts above and below the flow channel hole can be sealed respectively with the valve body; valve stability is high and guidance is good.

Inventors:
FU ZHENGKAI (CN)
Application Number:
PCT/CN2017/090700
Publication Date:
March 01, 2018
Filing Date:
June 29, 2017
Export Citation:
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Assignee:
SAILUOKE FLUID EQUIPMENT INC (CN)
International Classes:
F16K5/16; F16K5/02; F16K31/60
Foreign References:
CN106195309A2016-12-07
CN205937925U2017-02-08
GB2424465B2008-09-17
CN202927112U2013-05-08
GB330605A1930-06-13
US3554488A1971-01-12
CN102878314A2013-01-16
Attorney, Agent or Firm:
CHENGDU XINGZHI PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)
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