CN203784311U - Novel leakage-free valve - Google Patents

Novel leakage-free valve Download PDF

Info

Publication number
CN203784311U
CN203784311U CN201420032176.0U CN201420032176U CN203784311U CN 203784311 U CN203784311 U CN 203784311U CN 201420032176 U CN201420032176 U CN 201420032176U CN 203784311 U CN203784311 U CN 203784311U
Authority
CN
China
Prior art keywords
valve
oil cylinder
spool
gland
valve seat
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
CN201420032176.0U
Other languages
Chinese (zh)
Inventor
陈珏
卢建龙
桂春辉
李俊
杨苗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI CHANGYI INDUSTRIAL Co Ltd
Original Assignee
JIANGXI CHANGYI INDUSTRIAL Co Ltd
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 JIANGXI CHANGYI INDUSTRIAL Co Ltd filed Critical JIANGXI CHANGYI INDUSTRIAL Co Ltd
Priority to CN201420032176.0U priority Critical patent/CN203784311U/en
Application granted granted Critical
Publication of CN203784311U publication Critical patent/CN203784311U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a valve and especially relates to a novel leakage-free valve. The novel leakage-free valve comprises a short section, a valve base, a valve body, a valve core, a valve cover and an oil cylinder, wherein the lower end of a piston rod of the oil cylinder is directly connected with the valve core; an oil cylinder flange is fixed with a valve cover flange through a bolt; a padding box and a padding gland on the valve cover are arranged as hidden structures. According to the utility model, two rods are combined into one, namely, an oil cylinder rod is prolonged and is directly fixed with the valve core and a valve rod is removed; the oil cylinder flange is directly fixed with the valve cover flange through the bolt, so that the padding box and the padding gland on the valve cover are hidden; once the padding gland suffers from air leakage, the air cannot leak to the outer side of the valve and also cannot leak into the oil cylinder, because the oil pressure of the oil cylinder is greatly higher than the air pressure in the valve.

Description

A kind of Leakproof valve
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of Leakproof valve.
Background technique
The valve rod of general valve and cylinder rod are to form with link and buffering spring assembly, and stuffing box only has a place on valve gap.Gland is exposed at outside valve gap outward, once filling leakage will spill outside valve.The work that often needs repairing maintenance, because valve is numerous, maintenance workload is huge.
Summary of the invention
In order to overcome above-mentioned defect, the purpose of this utility model is to provide a kind of Leakproof valve, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder.
To achieve these goals, the utility model adopts following technological scheme:
A kind of Leakproof valve, it comprises pipe nipple, valve seat, valve body, spool, valve gap, oil hydraulic cylinder;
The piston-rod lower end of described oil hydraulic cylinder is directly connected with spool, and oil hydraulic cylinder flange plate and bonnet flange dish are bolted together, and the stuffing box on valve gap and Gland are concealed type structure.
In the sealing surface that described spool contacts with valve seat, the outer rim of spool is roundlet edged surface; In the sealing surface that described spool contacts with valve seat, the inner edge of valve seat is the large conical surface.
The beneficial effects of the utility model:
The utility model is that two bars are united two into one, cylinder rod is lengthened and directly fixing and cancellation valve rod of spool, cylinder flange dish directly and bonnet flange dish be bolted together, stuffing box on valve gap and Gland are become to be hidden, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder, because oil cylinder oil pressure is far longer than valve internal air pressure.
On spool and sealing surface of seat, also improve, original structure spool is large sphere, valve seat is roundlet edged surface, sealing effect is poor, full water test is difficult to reach per minute and is less than 60, and new structure changes spool into roundlet edged surface, and valve seat changes big vertebra face into, change rear structure full water test per minute less than 1, more very one does not leak.Greatly increase sealing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, the utility model is described in detail:
A kind of Leakproof valve, it comprises pipe nipple 1, valve seat 2, valve body 3, spool 4, valve gap 5, oil hydraulic cylinder 6;
Piston rod 11 lower ends of described oil hydraulic cylinder 6 are directly connected with spool 4, and oil hydraulic cylinder flange plate 7 is bolted together with bonnet flange dish 8, and the stuffing box 9 on valve gap 5 and Gland 10 are concealed type structure.
In the sealing surface that described spool 4 contacts with valve seat 2, the outer rim of spool 4 is roundlet edged surface; In the sealing surface that described spool 4 contacts with valve seat 2, the inner edge of valve seat 2 is the large conical surface.
The utility model is that two bars are united two into one, cylinder rod is lengthened and directly fixing and cancellation valve rod of spool, cylinder flange dish directly and bonnet flange dish be bolted together, stuffing box on valve gap and Gland are become to be hidden, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder, because oil cylinder oil pressure is far longer than valve internal air pressure.

Claims (2)

1. a Leakproof valve, is characterized in that: it comprises pipe nipple (1), valve seat (2), valve body (3), spool (4), valve gap (5), oil hydraulic cylinder (6);
Piston rod (11) lower end of described oil hydraulic cylinder (6) is directly connected with spool (4), and oil hydraulic cylinder flange plate (7) is bolted together with bonnet flange dish (8), and stuffing box (9) and Gland (10) on valve gap (5) are concealed type structure.
2. Leakproof valve according to claim 1, is characterized in that: in the sealing surface that described spool (4) contacts with valve seat (2), the outer rim of spool (4) is roundlet edged surface; In the sealing surface that described spool (4) contacts with valve seat (2), the inner edge of valve seat (2) is the large conical surface.
CN201420032176.0U 2014-01-20 2014-01-20 Novel leakage-free valve Expired - Fee Related CN203784311U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420032176.0U CN203784311U (en) 2014-01-20 2014-01-20 Novel leakage-free valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420032176.0U CN203784311U (en) 2014-01-20 2014-01-20 Novel leakage-free valve

Publications (1)

Publication Number Publication Date
CN203784311U true CN203784311U (en) 2014-08-20

Family

ID=51320499

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420032176.0U Expired - Fee Related CN203784311U (en) 2014-01-20 2014-01-20 Novel leakage-free valve

Country Status (1)

Country Link
CN (1) CN203784311U (en)

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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: 20140820

CF01 Termination of patent right due to non-payment of annual fee