CN101737506B - Single-seat adjusting valve - Google Patents

Single-seat adjusting valve Download PDF

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Publication number
CN101737506B
CN101737506B CN 200810244539 CN200810244539A CN101737506B CN 101737506 B CN101737506 B CN 101737506B CN 200810244539 CN200810244539 CN 200810244539 CN 200810244539 A CN200810244539 A CN 200810244539A CN 101737506 B CN101737506 B CN 101737506B
Authority
CN
China
Prior art keywords
valve
guide sleeve
spool
rod
stuffing box
Prior art date
Application number
CN 200810244539
Other languages
Chinese (zh)
Other versions
CN101737506A (en
Inventor
王咏晖
陈建明
Original Assignee
张家港市科辰仪表有限公司
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 张家港市科辰仪表有限公司 filed Critical 张家港市科辰仪表有限公司
Priority to CN 200810244539 priority Critical patent/CN101737506B/en
Publication of CN101737506A publication Critical patent/CN101737506A/en
Application granted granted Critical
Publication of CN101737506B publication Critical patent/CN101737506B/en

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Abstract

The invention discloses a single-seat adjusting valve capable of bearing larger pressure difference, comprising a valve body, a valve cover and a valve rod. The valve body is internally provided with a valve cavity, and a water inlet and a water outlet which are communicated with the valve cavity and a valve core outlet; a valve seat is arranged in the valve cavity; a guide sleeve is arranged at the valve core outlet and internally provided with a guide bush; the guide sleeve is pressed tightly by the valve cover through a sealing gasket arranged between the guide sleeve and the valve cover; the valve body is pressed tightly by the guide sleeve through a sealing gasket arranged between the guide sleeve and the valve body; a stuffing box is arranged in the valve cover; the valve rod movably passes through the stuffing box and is connected with the valve core movably arranged in the guide bush, thereby a valve rod cavity is arranged among the valve rod, the valve core and the stuffing box; and the valve core is internally provided with a balance channel for communicating the water inlet and the valve rod cavity. The invention overcomes the defect that the traditional single-seat adjusting valve only can bear smaller pressure difference, widens the application occasions and high higher cost performance.

Description

Single-seat adjusting valve
Technical field
The present invention relates to modulating valve, refer more particularly to single-seat adjusting valve.
Background technique
As everyone knows, sleeve adjusting valve can bear larger pressure reduction, but leaks more serious.In order to improve leakage class, in sleeve adjusting valve, increased seal ring.Like this, leakage class is to have improved, but the cost of whole sleeve adjusting valve also significantly improved, because the price of a seal ring is equivalent to the price of whole sleeve adjusting valve trim.Compare with sleeve adjusting valve, the cost of single-seat adjusting valve is lower, and leakage class is higher, still, blemish in an otherwise perfect thing be: the pressure reduction that can bear is less, and it is comparatively narrow to cause it can adapt to occasion.
Summary of the invention
A technical problem to be solved by this invention is: a kind of single-seat adjusting valve that bears larger pressure reduction is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: single-seat adjusting valve, comprise: valve body, valve gap and valve rod, the water intake that is provided with valve pocket in the described valve body and is connected with valve pocket, water outlet and spool outlet, in the valve body lumen valve seat is installed, described spool outlet port is provided with guide sleeve, be provided with guide bush in the guide sleeve, described valve gap is by the gasket seal compressing guide sleeve between guide sleeve and valve gap, guide sleeve compresses valve body by the gasket seal between guide sleeve and valve body again, be provided with stuffing box in the valve gap, described valve handle activity is located in the stuffing box, be connected with the spool in being movably arranged on guide bush, thereby at valve rod, form valve-rod cavity between spool and the stuffing box; Offer the balance channel that is communicated with water intake and valve-rod cavity in the described spool.
Also be provided with the seal ring that overlaps together with guide bush between described guide sleeve and the spool.
The concrete set-up mode of described balance channel is: the top of described spool is provided with annular platform, forms stepped construction, the bottom surface central authorities of spool offer main equalizing orifice, offer the oblique secondary equalizing orifice that several communicate with main equalizing orifice on the annular platform.
All secondary equalizing orifices are evenly arranged on the annular platform.
The invention has the beneficial effects as follows: the present invention is communicated with the balance channel that water intake is connected with valve-rod cavity by offering in spool, overcome original single-seat adjusting valve and can bear the little shortcoming of pressure reduction, through the single-seat adjusting valve after improving, the sleeve adjusting valve of (identical inside nominal diameter uniform pressure grade) is similar under its actual permissible pressure and the equal conditions, thereby has expanded its application; And the cost of single-seat adjusting valve is than sleeve adjusting valve considerably cheaper, and in other words, the cost performance of the single-seat adjusting valve after the improvement is higher.
Description of drawings
Fig. 1 is structural representation of the present invention;
Among the figure: 1, valve body, 10, valve pocket, 11, water intake, 12, water outlet, 13, flange in the valve body, 14, gasket seal, 15, gasket seal, 2, valve seat, 3, spool, 31, annular platform, 32, main equalizing orifice, 33, secondary equalizing orifice, 4, guide sleeve, 5, guide bush, 6, seal ring, 7, valve gap, 71, stuffing box, 72, valve-rod cavity, 8, valve rod.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, single-seat adjusting valve of the present invention, comprise: valve body 1, valve gap 7 and valve rod 8, the water intake 11 that is provided with valve pocket 10 and is connected with valve pocket in the described valve body 1, flange 13 in water outlet 12 and the valve body, flange 13 is provided with the spool outlet in the valve body, valve seat 2 is installed in the valve body lumen, be provided with guide sleeve 4 in the spool outlet, be set with guide bush 5 in the guide sleeve 4, described valve gap 7 is by gasket seal 14 compressing guide sleeve 4 between guide sleeve 4 and valve gap 7, guide sleeve 4 compresses valve body 1 by the gasket seal 15 between guide sleeve 4 and valve body 1 again, be provided with stuffing box 71 in the valve gap 7, described valve rod 8 activities are located in the stuffing box 71, be connected with the spool 3 in being movably arranged on guide bush 5, thereby at valve rod 8, form valve-rod cavity 72 between the inner chamber of spool 3 and valve gap 7; Offer the balance channel that is communicated with water intake 11 and valve-rod cavity 72 in the described spool 3, its structure is: the top of spool 3 is provided with annular platform 31, forms stepped construction, the bottom surface central authorities of spool 3 offer main equalizing orifice 32, offer at least two oblique secondary equalizing orifices 33 that communicate with main equalizing orifice 32 on the annular platform 31, all secondary equalizing orifices 33 are evenly arranged on the annular platform 31.In the present embodiment, described guide sleeve 4 also is provided with the seal ring 6 that laminates with guide bush 5 between spool 3, for increasing the sealing effect of valve-rod cavity 72.
Working principle of the present invention is: when needs were closed, medium flow to the valve-rod cavity 72 by main equalizing orifice 32 and a plurality of secondary equalizing orifice 33 from liquid entering hole, will give 3 one downward pressure of spool by the medium of secondary equalizing orifice 33, impelled spool 3 and valve seat 2 airtight.So just reduced the unbalanced force of single-seat adjusting valve, greatly increase it and born the ability of pressure reduction, the sleeve adjusting valve of (identical inside nominal diameter uniform pressure grade) is similar under its actual permissible pressure and the equal conditions, thereby can adapt to wider pressure range, its application is also just more wide; And the cost of single-seat adjusting valve is than sleeve adjusting valve considerably cheaper, and in other words, the cost performance of the single-seat adjusting valve after the improvement is higher.

Claims (3)

1. single-seat adjusting valve, comprise: valve body, valve gap and valve rod, the water intake that is provided with valve pocket in the described valve body and is connected with valve pocket, water outlet and spool outlet, in the valve body lumen valve seat is installed, described spool outlet port is provided with guide sleeve, be provided with guide bush in the guide sleeve, described valve gap is by the gasket seal compressing guide sleeve between guide sleeve and valve gap, guide sleeve compresses valve body by the gasket seal between guide sleeve and valve body again, be provided with stuffing box in the valve gap, described valve handle activity is located in the stuffing box, be connected with the spool in being movably arranged on guide bush, thereby at valve rod, form valve-rod cavity between spool and the stuffing box; Offer the balance channel that is communicated with water intake and valve-rod cavity in the described spool, also be provided with the seal ring that overlaps together with guide bush between described guide sleeve and the spool.
2. such as the described single-seat adjusting valve of claim l, it is characterized in that: the concrete set-up mode of described balance channel is: the top of described spool is provided with annular platform, forms stepped construction, the bottom surface central authorities of spool offer main equalizing orifice, offer the oblique secondary equalizing orifice that several communicate with main equalizing orifice on the annular platform.
3. single-seat adjusting valve as claimed in claim 2, it is characterized in that: all secondary equalizing orifices are evenly arranged on the annular platform.
CN 200810244539 2008-11-20 2008-11-20 Single-seat adjusting valve CN101737506B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200810244539 CN101737506B (en) 2008-11-20 2008-11-20 Single-seat adjusting valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200810244539 CN101737506B (en) 2008-11-20 2008-11-20 Single-seat adjusting valve

Publications (2)

Publication Number Publication Date
CN101737506A CN101737506A (en) 2010-06-16
CN101737506B true CN101737506B (en) 2013-02-13

Family

ID=42461382

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200810244539 CN101737506B (en) 2008-11-20 2008-11-20 Single-seat adjusting valve

Country Status (1)

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CN (1) CN101737506B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102853101B (en) * 2011-06-27 2013-10-02 浙江三花股份有限公司 Flow control valve
CN102927297A (en) * 2012-11-15 2013-02-13 无锡智能自控工程股份有限公司 Anti-drop structure for regulating valve bushing
CN103498942B (en) * 2013-09-02 2016-06-01 河南航天液压气动技术有限公司 A kind of valve
CN104676077A (en) * 2015-03-22 2015-06-03 衢州迪升工业设计有限公司 Normally-open electromagnetic valve with piston structure
CN105042139A (en) * 2015-07-14 2015-11-11 江苏康创自控工程有限公司 High-pressure-difference adjusting valve
CN106641279A (en) * 2016-12-23 2017-05-10 重庆特通阀门有限公司 Double-orientation balance adjustment valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5277403A (en) * 1993-05-12 1994-01-11 Dresser-Rand Company Balanced, steam control valve assembly, and a plug-type valving element therefor
CN2156353Y (en) * 1993-02-18 1994-02-16 刘树范 Self-balance valve
CN201326753Y (en) * 2008-11-20 2009-10-14 张家港市科辰仪表有限公司 Single-seat regulating valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62233584A (en) * 1986-04-02 1987-10-13 Yamatake Honeywell Co Ltd Bellows valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2156353Y (en) * 1993-02-18 1994-02-16 刘树范 Self-balance valve
US5277403A (en) * 1993-05-12 1994-01-11 Dresser-Rand Company Balanced, steam control valve assembly, and a plug-type valving element therefor
CN201326753Y (en) * 2008-11-20 2009-10-14 张家港市科辰仪表有限公司 Single-seat regulating valve

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