CN108869867A - It seals in one kind from release inside screw nonrising stem type gate valve - Google Patents
It seals in one kind from release inside screw nonrising stem type gate valve Download PDFInfo
- Publication number
- CN108869867A CN108869867A CN201811053290.0A CN201811053290A CN108869867A CN 108869867 A CN108869867 A CN 108869867A CN 201811053290 A CN201811053290 A CN 201811053290A CN 108869867 A CN108869867 A CN 108869867A
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- type gate
- release
- taper
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
- F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
Abstract
The invention discloses sealed in one kind from release inside screw nonrising stem type gate valve, including valve body, valve deck is connected on the valve body, valve rod is provided in the valve deck, the upper end of the valve rod is connected by mortar board with handwheel, the stem bottom outer wall thread is connected with taper flashboard, the valve deck is connected by Thrust nut with valve rod, several the first O-rings are provided in the Thrust nut, the lower part of the Thrust nut is provided with thrust pad, the thrust pad and valve rod and valve deck connection are provided with the first O-ring, and the present invention relates to inside screw nonrising stem type gate valve technical fields.It is sealed on this from release inside screw nonrising stem type gate valve, solve the problems, such as that the flap of existing inside screw nonrising stem type gate valve is easy to cause damage by the impacting with high pressure of single side and can not normally open and close, release is carried out to the flashboard outer wall of taper flashboard, mobile bar is provided between taper flashboard and buffer groups of springs at pressure relief assembly the pressure between taper flashboard can be subjected to self-unloading.
Description
Technical field
The present invention relates to inside screw nonrising stem type gate valve technical fields, specially seal in one kind from release inside screw nonrising stem type gate valve.
Background technique
Gate valve is widely used a kind of valve in pipe network system, also often referred to as slide valve, gate valve.In gate valve,
Closure member (that is, flap) edge and the direction of valve seat central axis is driven to move by valve rod to cut off and open Jie in pipeline
Mass flow is dynamic.Gate valve is commonly available to flap standard-sized sheet to be kept or the fully closed operating condition without often opening and closing.The characteristics of gate valve, exists
In：Standard-sized sheet fluid resistance is small；Open and close laborsaving special circumstances such as (do not include sealing surface) biting；It can be in the feelings of medium two-way flow
It is used under condition, without directionality；Sealing surface is not easily susceptible to erosion when standard-sized sheet；Structure length is short, is not only suitable for making the small valve of size
Door, and be suitble to do the big valve of size.
Sealing structure is to guarantee the important means of valve leakage out of steam system on inside screw nonrising stem type gate valve.Because valve leakage out of steam system is absolutely not to allow
, so the upper sealing structure of valve is had to rationally, valve leakage out of steam system can just be truly realized perfectly safe.Conventional dark lever brake
On valve there are two types of sealing structures：1, rubber self-sealing circle (U-shaped circle) is installed in valve deck；2, the mounting O-shaped rings on valve rod.In valve
The shortcomings that installation rubber self-sealing circle (U-shaped circle), is in lid：1, groove, the bad control of groove dimensions precision are processed in valve deck.
2, valve deck, which processes rear surfaces externally and internally, will carry out epoxy resin spraying, and spray substantially is less than causing valve deck to corrode in groove.3, from close
Seal (U-shaped circle) low pressure seal is unreliable (related with processing dimension progress and surface smoothness).The mounting O-shaped rings on valve rod
The disadvantage is that：Valve deck and the bad control of valve rod fit dimension precision, because valve deck processes rear surfaces externally and internally and to carry out epoxy resin
Spraying, not (coating thickness is uneven), the thick valve rod of spraying cannot pass through valve deck to the thickness control of spraying, not spray valve deck easy
Corrosion.If increasing valve deck hole size, it is inadequate to spray the thin O-ring decrement that will appear, and leads to seal failure.
During repeatedly closing use, operator is rotated existing inside screw nonrising stem type gate valve by handwheel band ovable valve stem, makes lock
Plate decline closure, since the dynamics of operator in operation is not easily controlled, the bottom of flashboard can occur after being used for multiple times
Abrasion, so that the leakproofness of inside screw nonrising stem type gate valve can be reduced, and the operation of existing gate valve is easily broken down without carrying out release.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides sealings in one kind to solve existing from release inside screw nonrising stem type gate valve
The problem of flap of inside screw nonrising stem type gate valve is easy to cause damage by the impacting with high pressure of single side and can not normally open and close.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：It seals in one kind from the dark lever brake of release
Valve, including valve body are connected with valve deck on the valve body, valve rod are provided in the valve deck, the upper end of the valve rod passes through
Mortar board is connected with handwheel, and the stem bottom outer wall thread is connected with taper flashboard；
The valve deck is connected by Thrust nut with valve rod, several the first O-rings are provided in the Thrust nut,
The lower part of the Thrust nut is provided with thrust pad, and it is O-shaped that the thrust pad with valve rod and valve deck connection is provided with first
Circle, the lower part and valve deck connection of the thrust pad are provided with the second O-ring, and the top of the thrust pad is provided with thrust,
The thrust is connected with valve rod；
It is located at the top of taper flashboard on the inside of the valve body and is equipped with from back lash spring, it is described from back lash spring and taper flashboard
Between be provided with release piston, the release piston is provided with flexible seals close to the side of taper flashboard.
Preferably, mounting groove is provided on the inside of the taper flashboard, mounting groove is fixedly connected on the inside of the taper flashboard
Release fixed block, the release fixed block outside are fixedly connected with mobile bar, buffer spring, institute are provided between the mobile bar
It states and is provided with limit sleeve on the outside of buffer spring.
Preferably, one end that the mobile bar is located on the inside of limit sleeve is provided with baffle.
Preferably, it is provided with the dovetail groove being connected with valve rod in the middle part of the handwheel, is had on the mortar board and hand
Take turns the dovetail groove being connected with valve rod.
Preferably, the handwheel is connected by screw with mortar board, and the mortar board is connected by screw with valve rod.
Preferably, the number of first O-ring is 10 or 12, and the number of second O-ring is 2 or 4.
Preferably, shaft-cup is connected above the valve deck, the sealing element that multiple tracks combines is equipped between the valve rod and shaft-cup.
Preferably, the valve deck is connected by hexagon socket countersunk flat cap head screw with shaft-cup.
(3) beneficial effect
The present invention provides seal in one kind from release inside screw nonrising stem type gate valve.Has following beneficial effect：
(1), sealing by the first O-ring of setting, the second O-ring, thrust pad, valve rod, stops from release inside screw nonrising stem type gate valve on this
It pushes away, Thrust nut and valve deck, valve deck is easy to control with valve rod fit dimension precision when assembly, is sealed reliable and stable
(2), sealing passes through from release inside screw nonrising stem type gate valve by the setting of taper flashboard top outer from release piston on this
From back lash spring, release is carried out to the flashboard outer wall of taper flashboard, can make cone brake plate outer wall when gate valve work
It carries out preventing pressure accumulation damage taper flashboard from release.
(3), on this seal from be provided between release inside screw nonrising stem type gate valve, taper flashboard mobile bar and buffer groups of springs at unload
It presses component the pressure between taper flashboard can be carried out self-unloading, is unfolded or receives by the displacement of mobile bar and buffer spring
Contracting guarantees that the when pressure of taper flashboard work can be unloaded voluntarily, and preventing pressure loading from overstocking causes valve body to damage.
Detailed description of the invention
Fig. 1 is the whole structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of structure of the invention A；
Fig. 3 is the structural schematic diagram of self-unloading laminated structure B of the present invention；
Fig. 4 is the structural schematic diagram of self-unloading laminated structure C of the present invention.
In figure：1 valve body, 2 valve decks, 3 valve rods, 4 handwheels, 5 mortar boards, 6 taper flashboards, 7 first O-rings, 8 second O-rings, 9
Thrust pad, 10 Thrust nuts, 11 thrusts, 12 release fixed blocks, 13 mobile bars, 14 buffer springs, 15 limit sleeves, 16 are from release bullet
Spring, 17 release pistons.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution：It seals in one kind from release inside screw nonrising stem type gate valve, including valve body
1, valve deck 2 is connected on valve body 1, valve rod 3 is provided in valve deck 2, and the upper end of valve rod 3 is connected by mortar board 5 with handwheel 4, valve
3 bottom outer wall of bar is threaded with taper flashboard 6；
Valve deck 2 is connected by Thrust nut 10 with valve rod 3, several the first O-rings 7 are provided in Thrust nut 10,
The lower part of Thrust nut 10 is provided with thrust pad 9, thrust pad 9 and valve rod 3 and 2 connection of valve deck is provided with the first O-ring
7, the lower part and 2 connection of valve deck of thrust pad 9 are provided with the second O-ring 8, and the top of thrust pad 9 is provided with thrust 11, thrust
11 are connected with valve rod 3；
It is located at the top of taper flashboard 6 on the inside of valve body 1 and is equipped with from back lash spring 16, from back lash spring 16 and taper flashboard 6
Between be provided with release piston 17, release piston 17 is provided with flexible seals close to the side of taper flashboard 6.
Mounting groove is provided on the inside of taper flashboard 6,6 inside mounting groove of taper flashboard is fixedly connected with release fixed block 12,
It is fixedly connected with mobile bar 13 on the outside of release fixed block 12, is provided with buffer spring 14 between mobile bar 13, outside buffer spring 14
Side is provided with limit sleeve 15, can effectively prevent taper flashboard 6 from damaging directly to progress on the inside of taper flashboard 6 from release.
One end that mobile bar 13 is located at 15 inside of limit sleeve is provided with baffle, prevents mobile bar 13 from falling off.
The middle part of handwheel 4 is provided with the dovetail groove being connected with valve rod 3, has on mortar board 5 and 3 phase of handwheel 4 and valve rod
The dovetail groove of connection, the installing zone that dovetail groove installation can make become more securely.
Handwheel 4 is connected by screw with mortar board 5, and mortar board 5 is connected by screw with valve rod 3.
The number of first O-ring is 10 or 12, and the number of the second O-ring is 2 or 4.
Shaft-cup is connected above valve deck 2, and the sealing element that multiple tracks combines is equipped between valve rod 3 and shaft-cup.
Valve deck 2 is connected by hexagon socket countersunk flat cap head screw with shaft-cup.
In use, user of service is rotated by rotation handwheel 4 with ovable valve stem 3, valve rod 3 passes through thread belt mantle shape flashboard 6
It moves up and down, 6 top outer of taper flashboard is provided with release piston 17, by from back lash spring 16, to taper flashboard 6
Flashboard outer wall carries out release, and the pressure relief assembly that mobile bar 13 and the composition of buffer spring 14 are provided between taper flashboard 6 can incite somebody to action
Pressure between taper flashboard 6 carries out self-unloading, is unfolded or shrinks by the displacement of mobile bar 13 and buffer spring 14, guarantees cone
The when pressure that shape flashboard 6 works can be unloaded voluntarily, and preventing pressure loading from overstocking causes valve body to damage.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. being sealed in one kind from release inside screw nonrising stem type gate valve, including valve body (1), it is characterised in that：It is connected on the valve body (1)
Valve deck (2), the valve deck (2) is interior to be provided with valve rod (3), and the upper end of the valve rod (3) is connected by mortar board (5) with handwheel (4)
It connects, valve rod (3) bottom outer wall is threaded with taper flashboard (6)；
The valve deck (2) is connected by Thrust nut (10) with valve rod (3), is provided with several in the Thrust nut (10)
The lower part of first O-ring (7), the Thrust nut (10) is provided with thrust pad (9), the thrust pad (9) and valve rod (3) and valve
Lid (2) connection is provided with the first O-ring (7), and lower part and valve deck (2) connection of the thrust pad (9) are provided with
The top of second O-ring (8), the thrust pad (9) is provided with thrust (11), and the thrust (11) is connected with valve rod (3)；
It is located at the top of taper flashboard (6) on the inside of the valve body (1) and is equipped with from back lash spring (16), it is described from back lash spring (16)
It is provided between taper flashboard (6) release piston (17), the release piston (17) is arranged close to the side of taper flashboard (6)
Flexible sealing element.
2. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：The taper flashboard (6)
Inside is provided with mounting groove, and mounting groove is fixedly connected with release fixed block (12) on the inside of the taper flashboard (6), described to unload pressing
Determine to be fixedly connected with mobile bar (13) on the outside of block (12), be provided with buffer spring (14) between the mobile bar (13), it is described slow
It rushes on the outside of spring (14) and is provided with limit sleeve (15).
3. being sealed in one kind according to claim 2 from release inside screw nonrising stem type gate valve, it is characterised in that：Mobile bar (13) position
One end on the inside of limit sleeve (15) is provided with baffle.
4. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：In the handwheel (4)
Portion is provided with the dovetail groove being connected with valve rod (3), has on the mortar board (5) and is connected with handwheel (4) and valve rod (3)
Dovetail groove.
5. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：The handwheel (4) passes through
Screw is connected with mortar board (5), and the mortar board (5) is connected by screw with valve rod (3).
6. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：First O-ring
Number is 10 or 12, and the number of second O-ring is 2 or 4.
7. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：Above the valve deck (2)
Shaft-cup is connected, the sealing element that multiple tracks combines is equipped between the valve rod (3) and shaft-cup.
8. being sealed in one kind according to claim 1 from release inside screw nonrising stem type gate valve, it is characterised in that：The valve deck (2) passes through
Hexagon socket countersunk flat cap head screw is connected with shaft-cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053290.0A CN108869867A (en) | 2018-09-11 | 2018-09-11 | It seals in one kind from release inside screw nonrising stem type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053290.0A CN108869867A (en) | 2018-09-11 | 2018-09-11 | It seals in one kind from release inside screw nonrising stem type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869867A true CN108869867A (en) | 2018-11-23 |
Family
ID=64323586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811053290.0A Pending CN108869867A (en) | 2018-09-11 | 2018-09-11 | It seals in one kind from release inside screw nonrising stem type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464674A (en) * | 2021-07-14 | 2021-10-01 | 江苏盐电阀门有限公司 | Heavy-calibre wedge gate valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB418931A (en) * | 1933-08-10 | 1934-11-02 | Audley Engineering Co Ltd | Improvements relating to valves for controlling fluids |
| CN105318025A (en) * | 2014-07-31 | 2016-02-10 | 湖北泰和石化设备有限公司 | Double-disc wedge gate valve adopting composite spring connection |
| CN106812983A (en) * | 2017-02-22 | 2017-06-09 | 中亚阀门有限公司 | A kind of Pneumatic safety voltage regulation of voltage regulation protects gate valve |
| CN206754430U (en) * | 2017-05-23 | 2017-12-15 | 铜陵爱阀科技有限公司 | From pressure-releasing type inside screw nonrising stem type gate valve |
| CN207715784U (en) * | 2017-12-07 | 2018-08-10 | 上海长成自控设备有限公司 | A kind of high temperature and pressure gate valve |
-
2018
- 2018-09-11 CN CN201811053290.0A patent/CN108869867A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB418931A (en) * | 1933-08-10 | 1934-11-02 | Audley Engineering Co Ltd | Improvements relating to valves for controlling fluids |
| CN105318025A (en) * | 2014-07-31 | 2016-02-10 | 湖北泰和石化设备有限公司 | Double-disc wedge gate valve adopting composite spring connection |
| CN106812983A (en) * | 2017-02-22 | 2017-06-09 | 中亚阀门有限公司 | A kind of Pneumatic safety voltage regulation of voltage regulation protects gate valve |
| CN206754430U (en) * | 2017-05-23 | 2017-12-15 | 铜陵爱阀科技有限公司 | From pressure-releasing type inside screw nonrising stem type gate valve |
| CN207715784U (en) * | 2017-12-07 | 2018-08-10 | 上海长成自控设备有限公司 | A kind of high temperature and pressure gate valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464674A (en) * | 2021-07-14 | 2021-10-01 | 江苏盐电阀门有限公司 | Heavy-calibre wedge gate valve |
| CN113464674B (en) * | 2021-07-14 | 2023-02-10 | 江苏盐电阀门有限公司 | Heavy-calibre wedge gate valve |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181123 |