CN201496609U - Pilot-operated type hard-seal fixed ball valve - Google Patents

Pilot-operated type hard-seal fixed ball valve Download PDF

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Publication number
CN201496609U
CN201496609U CN2009202346367U CN200920234636U CN201496609U CN 201496609 U CN201496609 U CN 201496609U CN 2009202346367 U CN2009202346367 U CN 2009202346367U CN 200920234636 U CN200920234636 U CN 200920234636U CN 201496609 U CN201496609 U CN 201496609U
Authority
CN
China
Prior art keywords
valve
bypass tube
gland
ball
spheroid
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 - Lifetime
Application number
CN2009202346367U
Other languages
Chinese (zh)
Inventor
张国明
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.)
KUNSHAN WEISA VALVE CO Ltd
Original Assignee
KUNSHAN WEISA VALVE 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 KUNSHAN WEISA VALVE CO Ltd filed Critical KUNSHAN WEISA VALVE CO Ltd
Priority to CN2009202346367U priority Critical patent/CN201496609U/en
Application granted granted Critical
Publication of CN201496609U publication Critical patent/CN201496609U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a pilot-operated type hard-seal fixed ball valve which comprises a valve body, a ball body, a valve seat, a valve cap, a valve rod, a gland, a stuffing gland and a supporting shaft, wherein the ball body is arranged inside the valve body; the valve rod passes through the upper part of the valve body and is connected with the ball body, and the exterior of the valve rod is provided with the gland and the stuffing gland that are respectively arranged at the upper part and the lower part; the valve seat is arranged between the valve cap and the ball body; the supporting shaft passes through the lower part of the valve body and then is connected with the ball body; two valve cap sealing rings and a valve seat spring are arranged between the valve cap and the valve seat; the valve cap, the valve seat and the two valve seat sealing rings form a pressure difference cavity; the left side of the valve cap is provided with two left bypass pipes, the right side thereof is provided with two right bypass pipes and the left bypass pipes are connected with the right bypass pipes through control valves; the valve rod is also sheathed with a tee-joint handle head communicated with the control valves; and a handle steel pipe is arranged on the valve rod. In the utility model, when a valve is opened, the valve seat is separated from the ball surface, thus greatly prolonging the service life of the hard-seal fixed ball valve and greatly reducing the opening torque of the valve.

Description

Pilot-operated type hard seal fixing ball valve
Technical field
The utility model relates to a kind of valve, especially relates to a kind of sealing and driving of hard seal fixing ball valve.
Background technique
We know, hard seal ball valve is widely used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, existing hard seal fixing ball valve, mainly comprise valve body, be fixed on the valve gap on the valve body, be arranged on the spheroid in the valve body, be arranged on the valve seat between spheroid and the valve gap, and be arranged on the spring in the valve gap.Valve with respect to other soft material sealings, that hard seal fixing ball valve has is high temperature resistant, the advantage of high pressure, but, because the specific pressure that hard seal fixing ball valve requires causes valve switch moment excessive, the surface of contact that can occur spheroid and valve seat in use sharply weares and teares and problem such as pulls, thereby cause the leakage of valve, shortened the working life of valve.
The model utility content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of long service life, pilot-operated type hard seal fixing ball valve that switching torque is little.
A kind of pilot-operated type hard seal fixing ball valve, comprise valve body, spheroid, valve seat, valve gap, valve rod, gland, Gland, supporting axle, wherein spheroid is arranged on valve inner, the top that valve rod passes valve body is connected with spheroid, valve rod is with gland and Gland outward, gland is positioned on the Gland, be provided with left valve seat between left side valve gap and the spheroid, be provided with valve seat between valve gap and the spheroid, the bottom that back shaft passes valve body is connected with spheroid, it is characterized in that: be provided with valve bonnet seal ring one between valve gap and the valve seat, valve base sealing ring two and seating spring, wherein, valve gap, valve seat, valve base sealing ring one and valve base sealing ring two form a pressure reduction chamber, be provided with left bypass tube one and left bypass tube two in the left side of valve gap, the right side of valve gap is provided with right bypass tube one and right bypass tube two, left side bypass tube one is connected by being positioned at its middle control valve with right bypass tube one, in addition, an also sheathed threeway handle head on valve rod, itself and control valve are connected, and the handle steel pipe that is communicated with the threeway handle head then is vertically set on the valve rod by bolt.
Above-mentioned left bypass tube one and right bypass tube one pass the left and right sides of valve gap respectively and are communicated with the working area of separately seating spring, and second described left bypass tube two and right bypass tube are located at respectively between separately the valve base sealing ring one and valve base sealing ring two.
Between above-mentioned control valve and gland, also can be provided with support.
The beneficial effects of the utility model are: the by-pass governing device of the utility model by peripheral hardware comes controlling plumbing fixtures from pressure or the outside potential source pressure reduction in valve seat location, thereby realize the automatic and sphere disengagement of valve valve seat when opening, thereby increased the working life of hard seal fixing ball valve greatly, and greatly reduced the unlatching moment of torsion of valve.The working life of above-mentioned pilot-operated type hard seal fixing ball valve be in the market hard seal fixing ball valve with 5~6 times of operating mode following working life, and open moment of torsion be in the market hard seal fixing ball valve 1/5th to 1/10th between.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Main reference character implication among the figure:
1, valve body 3, spheroid 4, valve seat 5, valve gap
6, valve rod 7, gland 8, Gland 9, supporting axle
10, valve bonnet seal ring 1, valve bonnet seal ring 2 12, seating spring
13, left bypass tube 1, left bypass tube 2 15, right bypass tube one
16, right bypass tube 2 17, control valve 18, threeway handle head
19, handle steel pipe 20, support
Embodiment
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail:
Fig. 1 is the utility model one embodiment's a structural representation.
As shown in Figure 1: a kind of pilot-operated type hard seal fixing ball valve, comprise valve body 1, spheroid 3, valve seat 4, valve gap 5, valve rod 6, gland 7, Gland 8, supporting axle 9, wherein spheroid 3 is arranged on the inside of valve body 1, the top that valve rod 6 passes valve body 1 is connected with spheroid 3, valve rod 6 outer gland 7 and the Glands 8 of being with, gland 7 is positioned on the Gland 8, be provided with valve seat 4 between valve gap 5 and the spheroid 3, the bottom that back shaft 9 passes valve body 1 is connected with spheroid 3, be provided with valve bonnet seal ring 1 between valve gap 5 and the valve seat 4, valve base sealing ring 2 11 and seating spring 12, wherein, valve gap 5, valve seat 4, valve base sealing ring 1 and valve base sealing ring 2 11 form a pressure reduction chamber, be provided with left bypass tube 1 and left bypass tube 2 14 in the left side of valve gap 5, the right side of valve gap 5 is provided with right bypass tube 1 and right bypass tube 2 16, left side bypass tube 1 is connected by being positioned at its middle control valve 17 with right bypass tube 1, a left side bypass tube 1 and right bypass tube 1 pass the left and right sides of valve gap 5 respectively and are communicated with the working area of separately seating spring 12, and left bypass tube 2 14 and right bypass tube 2 16 then are located at respectively between separately the valve base sealing ring 1 and valve base sealing ring 2 11.In addition, an also sheathed threeway handle head 18 on valve rod 6, itself and control valve 17 are connected, and the handle steel pipe 19 that is communicated with threeway handle head 18 then is vertically set on the valve rod 6 by bolt, also is provided with support 20 between above-mentioned control valve 17 and gland 7.
Valve described in the utility model is under closing state, flowing medium is come in from the passage of the valve gap 5 on right side, this moment the right side the passage of valve gap 5 in pressure be higher than pressure in the passage of valve gap 5 in cavity that valve body 1 forms and left side, move handle steel pipe 19 this moment, by threeway handle head 18 position signal is passed to control valve 17, control valve 17 is communicated with left bypass tube 2 14, right bypass tube 1 and right bypass tube 2 16, flowing medium enters under action of pressure by valve gap 5, valve seat 4, the pressure reduction chamber that valve base sealing ring 1 and valve base sealing ring 2 11 form, fluid medium pressure overcomes the elastic force of seating spring 12 and pushes valve seat 4 open, valve seat 4 and spheroid 3 are thrown off, and when valve wide open, control valve 17 cuts off left bypass tube 2 14, right bypass tube 1 and right bypass tube 2 16, make valve seat 4 and spheroid 3 keep disengaged condition, when wanting throttle down, move handle steel pipe 19, in the closed procedure of the pass of valve, valve seat 4 and the spheroid 3 of this moment still keep disengaged condition, but the gap of throwing off is very little, this makes valve be higher than in the valve cavity and the pressure of outlet end at the pressure of entrance point, and when the valve contract fully, 18 of threeway handle heads pass to control valve 17 to position signal, control valve 17 is communicated with left bypass tube 1, left side bypass tube 2 14 and right bypass tube 2 16, in the passage of the valve gap 5 on the left of the flowing medium in the pressure reduction chamber enters under the pressure of seating spring 12, this moment, valve seat 4 contacted with spheroid 3, valve seal has been finished the process of opening and closing of valve.
The utility model greatly reduces the unlatching moment of torsion of valve, has increased the working life of hard seal fixing ball valve.
Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technological scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.

Claims (4)

1. pilot-operated type hard seal fixing ball valve, comprise valve body (1), spheroid (3), valve seat (4), valve gap (5), valve rod (6), gland (7), Gland (8), supporting axle (9), wherein spheroid (3) is arranged on valve body (1) inside, valve rod (6) passes valve body (1) top and is connected with spheroid (3), outer gland (7) and the Gland (8) of being with of valve rod (6), gland (7) is positioned on the Gland (8), be provided with valve seat (4) between valve gap (5) and the spheroid (3), the bottom that back shaft (9) passes valve body (1) is connected with spheroid (3), it is characterized in that: be provided with valve bonnet seal ring one (10) between valve gap (5) and the valve seat (4), valve base sealing ring two (11) and seating spring (12), wherein, valve gap (5), valve seat (4), valve base sealing ring one (10) and valve base sealing ring two (11) form a pressure reduction chamber, be provided with left bypass tube one (13) and left bypass tube two (14) in the left side of valve gap (5), the right side of valve gap (5) is provided with right bypass tube one (15) and right bypass tube two (16), left side bypass tube one (13) is connected by being positioned at its middle control valve (17) with right bypass tube one (15), in addition, go up an also sheathed threeway handle head (18) at valve rod (6), itself and control valve (17) are connected, and the handle steel pipe (19) that is communicated with threeway handle head (18) then is vertically set on the valve rod (6) by bolt.
2. pilot-operated type hard seal fixing ball valve according to claim 1 is characterized in that described left bypass tube one (13) and right bypass tube one (15) pass the left and right sides of valve gap (5) respectively and be communicated with the working area of separately seating spring (12).
3. pilot-operated type hard seal fixing ball valve according to claim 1 is characterized in that described left bypass tube two (14) and right bypass tube two (16) are located at respectively between separately the valve base sealing ring one (10) and valve base sealing ring two (11).
4. pilot-operated type hard seal fixing ball valve according to claim 1 is characterized in that being provided with support (20) between above-mentioned control valve (17) and gland (7).
CN2009202346367U 2009-08-12 2009-08-12 Pilot-operated type hard-seal fixed ball valve Expired - Lifetime CN201496609U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202346367U CN201496609U (en) 2009-08-12 2009-08-12 Pilot-operated type hard-seal fixed ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202346367U CN201496609U (en) 2009-08-12 2009-08-12 Pilot-operated type hard-seal fixed ball valve

Publications (1)

Publication Number Publication Date
CN201496609U true CN201496609U (en) 2010-06-02

Family

ID=42439816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202346367U Expired - Lifetime CN201496609U (en) 2009-08-12 2009-08-12 Pilot-operated type hard-seal fixed ball valve

Country Status (1)

Country Link
CN (1) CN201496609U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629640B (en) * 2009-08-12 2012-05-30 昆山维萨阀门有限公司 Pilot-operated type hard seal fixing ball valve
CN107975617A (en) * 2017-11-28 2018-05-01 永嘉县信诚科技服务有限公司 Semi-automatic high temperature opens and closes electric-controlled ball valve without friction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629640B (en) * 2009-08-12 2012-05-30 昆山维萨阀门有限公司 Pilot-operated type hard seal fixing ball valve
CN107975617A (en) * 2017-11-28 2018-05-01 永嘉县信诚科技服务有限公司 Semi-automatic high temperature opens and closes electric-controlled ball valve without friction

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20100602

Effective date of abandoning: 20090812