CN202790875U - High-tightness gate valve - Google Patents

High-tightness gate valve Download PDF

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Publication number
CN202790875U
CN202790875U CN 201220347488 CN201220347488U CN202790875U CN 202790875 U CN202790875 U CN 202790875U CN 201220347488 CN201220347488 CN 201220347488 CN 201220347488 U CN201220347488 U CN 201220347488U CN 202790875 U CN202790875 U CN 202790875U
Authority
CN
China
Prior art keywords
valve
valve rod
valve stem
stop ring
flashboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220347488
Other languages
Chinese (zh)
Inventor
李跃专
Original Assignee
李跃专
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李跃专 filed Critical 李跃专
Priority to CN 201220347488 priority Critical patent/CN202790875U/en
Application granted granted Critical
Publication of CN202790875U publication Critical patent/CN202790875U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A high-tightness gate valve is characterized in that a packing chamber is arranged in a cover on the upper portion of a bonnet, a retainer ring groove is reserved on the inner wall of the packing chamber, a stop ring is arranged, below the retainer ring groove, at the bottom of the packing chamber, a valve stem is connected with the stop ring through a groove thereon, the lower end of the valve stem is connected with a disc through a lower valve stem nut, a hand wheel is connected to the upper end of the valve stem in a threaded manner, and a retainer ring is embedded in the retainer ring groove to fix the valve stem axially; a packing gland is directly connected with the bonnet through a bolt so as to compress the packing; both fluid inlet and outlet channels are conical channels with inner-end diameter smaller than outer-end diameter; anticorrosive pads are respectively arranged on seal planes between the disc and the fluid inlet and outlet channels which are matched mutually, the fluid inlet and the outlet channels of the gate valve are changed into the conical channels with the inner-end diameter smaller than the outer-end diameter from cylindrical channels, and the diameter of the disc and the volume of an inner cavity of the valve body are reduced correspondingly.

Description

The high leak tightness gate valve
Technical field
The utility model belongs to technical field of valve manufacturing, particularly relates to a kind of high leak tightness gate valve that is applied in the pipeline system.
Background technique
In existing technology, valve in the production mainly is for pipeline system control media pressure, flow and the flow direction, it in use needs regular opening and closing, sealability will descend in use for some time, particularly because opening and closing repeatedly, make the sealing system of valve produce wearing and tearing, valve will not be in sealing state this moment, thereby cause scrapping of product, and the valve of this sealing configuration is higher to processing request, and valve is a kind of engineering goods that are widely used, production and processing meets the valve that sealability requires, need to adopt day by day expensive non-ferrous metal, such as brazen valve body, valve seat, valve rod, bonnet, the spool ball, fill bonnet, purple adapter made of copper etc.; Make the raw material serious waste, these factors have all caused the manufacture cost of ball valve too high, and conventional gate valve is because fluid is cylindrical bore into and out of the hole, corresponding flashboard and body cavity size are large, material expends many and use in required moment also larger; Owing between valve gap and Gland, establish a filler microcephaly independently, in order to axial restraint valve rod and filling stuffing box packing, both there had been complex structure, its sealing is relatively poor again, therefore, above-mentioned gate valve exists that structure and processing technology are complicated, volume is large, consumptive material is many, sealing is relatively poor and the more high disadvantage of cost of production.
Summary of the invention
The purpose of this utility model is the defective that exists for background technique, improves a kind of high leak tightness gate valve of design, simplifies structure and processing technology to reach, and reduces consumptive material and valve weight and cost of production, improves sealing, reduces the purposes such as valve volume.
Realize that concrete scheme of the present utility model is:
A kind of high leak tightness gate valve comprises valve body, fluid duct, flashboard, lower valve rod nut, valve gap, stop ring, back-up ring, filler, handwheel, Gland, Packing seat, valve rod, anticorrosion pad.It is characterized in that being provided with filler chamber in the described valve upper part of the cover lid, on the inwall of filler chamber, also be provided with a circlip groove, the following filler chamber bottom of circlip groove also is provided with a stop ring, valve rod connects with stop ring by the groove on it, the valve rod lower end is connected with flashboard by the lower valve rod nut, handwheel is threaded connection in the valve rod upper end, and back-up ring then is embedded in the circlip groove its axial restraint; Gland then directly connects to compress filler by bolt with valve gap; Fluid duct into and out of fluid is the inner diameter cone-shape duct little than the outer end diameter; On flashboard and sealing surface that the fluid duct cooperates, also be provided with anticorrosion pad, it is less to change gate valve into inner diameter into and out of the fluid duct of fluid by cylindrical bore, and the larger cone-shape duct of outer end diameter, and the corresponding diameter of flashboard and the volume of body cavity of reducing.
A kind of high leak tightness gate valve of the utility model is incited somebody to action, and it is characterized in that the described filler chamber for sealing that directly sets up on lid top, cooperates stop ring to replace its function with back-up ring, to the valve rod axially locating; It is less to change gate valve into inner diameter into and out of the fluid duct of fluid by cylindrical bore simultaneously, and the larger cone-shape duct of outer end diameter, and the corresponding diameter of flashboard and the volume of body cavity of reducing, thereby realize its purpose.
Usefulness of the present utility model is:
Because filler chamber directly is located in the valve gap, and cooperate so that valve rod is made axial restraint by back-up ring and stop ring, simplify the structure and improved sealing; To change into and out of the fluid duct of fluid and be made as the cone-shape hole, the consumptive material of same specification valve is reduced, the keying moment during it uses also can reduce.Therefore, the utlity model has simple in structure, reliable, good airproof performance, the characteristics such as volume is little, lightweight, and cost of production is lower.
Description of drawings
Fig. 1 is the utility model structural representation.
In Fig. 1: 1-valve body, 2-fluid duct, 3-flashboard, 4-lower valve rod nut, 5-valve gap, 6-stop ring, 7-back-up ring, 8-filler, 9-handwheel, 10-Gland, 11-Packing seat, 12-valve rod, 13, the anticorrosion pad of 14-.
Embodiment
Further specify below in conjunction with Figure of description.
A kind of high leak tightness gate valve comprises valve body 1, fluid duct 2, flashboard 3, lower valve rod nut 4, valve gap 5, stop ring 6, back-up ring 7, filler 8, handwheel 9, Gland 10, Packing seat 11, valve rod 12, anticorrosion pad 13,14.It is characterized in that being provided with filler chamber in the lid on described valve gap 5 tops, on the inwall of filler chamber, also be provided with a circlip groove, the following filler chamber bottom of circlip groove also is provided with a stop ring 6, valve rod 12 connects with stop ring 6 by the groove on it, valve rod 12 lower ends are connected with flashboard 3 by lower valve rod nut 4, handwheel 9 is threaded connection in valve rod 12 upper ends, and back-up ring 7 then is embedded in the circlip groove its axial restraint; 10 of Glands directly connect to compress filler 8 with valve gap 5 by bolt; Fluid duct 2 into and out of fluid is the inner diameter cone-shape duct little than the outer end diameter; On flashboard and sealing surface that the fluid duct cooperates, also be provided with anticorrosion pad 13,14, it is less to change gate valve into inner diameter into and out of the fluid duct 2 of fluid by cylindrical bore, and the larger cone-shape duct of outer end diameter, and the corresponding diameter of flashboard 3 and the volume of body cavity of reducing.

Claims (1)

1. high leak tightness gate valve, comprise valve body, the fluid duct, flashboard, the lower valve rod nut, valve gap, stop ring, back-up ring, filler, handwheel, Gland, Packing seat, valve rod, anticorrosion pad, it is characterized in that being provided with filler chamber in the described valve upper part of the cover lid, on the inwall of filler chamber, also be provided with a circlip groove, the following filler chamber bottom of circlip groove also is provided with a stop ring, valve rod connects with stop ring by the groove on it, the valve rod lower end is connected with flashboard by the lower valve rod nut, handwheel is threaded connection in the valve rod upper end, back-up ring then is embedded in the circlip groove, and the sealing surface that cooperates with the fluid duct at flashboard is provided with anticorrosion pad.
CN 201220347488 2012-07-18 2012-07-18 High-tightness gate valve Expired - Fee Related CN202790875U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220347488 CN202790875U (en) 2012-07-18 2012-07-18 High-tightness gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220347488 CN202790875U (en) 2012-07-18 2012-07-18 High-tightness gate valve

Publications (1)

Publication Number Publication Date
CN202790875U true CN202790875U (en) 2013-03-13

Family

ID=47818138

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220347488 Expired - Fee Related CN202790875U (en) 2012-07-18 2012-07-18 High-tightness gate valve

Country Status (1)

Country Link
CN (1) CN202790875U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267139A (en) * 2013-05-03 2013-08-28 无锡富盛阀业有限公司 Gate valve
CN105864445A (en) * 2016-04-29 2016-08-17 天津市中核科技实业有限公司 Porous plate-type adjustment valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267139A (en) * 2013-05-03 2013-08-28 无锡富盛阀业有限公司 Gate valve
CN105864445A (en) * 2016-04-29 2016-08-17 天津市中核科技实业有限公司 Porous plate-type adjustment valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20140718

EXPY Termination of patent right or utility model