CN104712783A - Inner-equilibrium side-valve type high-pressure hand-operated block valve - Google Patents
Inner-equilibrium side-valve type high-pressure hand-operated block valve Download PDFInfo
- Publication number
- CN104712783A CN104712783A CN201310689050.0A CN201310689050A CN104712783A CN 104712783 A CN104712783 A CN 104712783A CN 201310689050 A CN201310689050 A CN 201310689050A CN 104712783 A CN104712783 A CN 104712783A
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- block
- high pressure
- block valve
- 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
- 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
- F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
- F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
-
- 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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Abstract
The invention relates to an inner-equilibrium side-valve type high-pressure hand-operated block valve. The inner-equilibrium side-valve type high-pressure hand-operated block valve is characterized in that the block valve comprises a block valve body, the block valve body comprises a valve rod and a valve element used cooperatively with the lower end of the valve rod, the upper end of the valve rod is cooperated with a thread supporting seat, the upper end of the thread supporting seat is connected with a driving device, the valve rod is driven through the rotation of the driving device, and the external thread on the valve rod is interacted with the internal thread on the thread supporting seat, so that the valve element is driven to move upward. According to the technical scheme, the sectional area of the lower end face of the valve element with the addition of the sectional area of the lower end face of the valve rod is equal to the sectional area of the upper end of the valve element, according to the principle that force is equal to pressure multiplies action area, forces of high pressure medium exerting on the two ends of the valve element are equal due to that the lower action area and the upper action areas are equal, the valve element can be in equilibrium, and at the moment, the diving device only needs to overcome friction between a seal and a screw pair; when the block valve is opened, a medium flowing with high speed and high pressure cannot contact with seal, and the service life of the seal can be prolonged.
Description
Technical field
The present invention relates to a kind of block valve, the high pressure hand-operated block valve of especially a kind of inner equilibrium sliding valve style, belongs to the design and fabrication technology field of high-pressure medium system valve.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.For the valve of liquid control system, various valves used from the simplest stop valve to very complicated robot control system(RCS), its kind and specification are quite various.Valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.Block valve is also known as cut-off valve, and its effect is the medium connected or block in pipeline, and block valve comprises gate valve, stop valve, stopcock, ball valve, butterfly valve and barrier film etc., and its spool mainly contains cone valve and sliding valve style two kinds.The manual block valve of high pressure valve refers to that nominal pressure PN is the valve of 10 ~ 80Mpa, and by handwheel, handle, lever, sprocket wheel, handle valve event by manpower, its state generally only has two kinds: namely open and close.Existing high voltage cut-off valve in use mainly contains with next problem: 1. valve opens in a high voltage state after cutting out again and compares effort, because the pressure of high-pressure medium only acts on spool side (or both sides but active area is different large), make spool be subject to very large unbalanced force effect, manually moving valve core is more difficult.2. the block valve of most of cone valve type structure opens rear high pressure, swiftly flowing medium can act directly on spool and in sealing, cause spool and sealing wear, damage, let out inefficacy in block valve, valve is short for working life.
Chinese patent CN200920288252.3 discloses one " balanced type difunctional hand-operated gate valve for high-pressure water descaling " and patent CN201020163332.9 discloses one " metallurgical descaling injection valve ", " balanced type difunctional hand-operated gate valve for high-pressure water descaling " is a kind of manual conical valve structure, rear high pressure opened by valve, swiftly flowing medium can act directly on spool and seal, cause spool and sealing wear, damage, working life is short.The slide-valve structure of the spool employing of " metallurgical descaling injection valve ", it is by air cylinder driven, but the sectional area on its spool top is less than the sectional area of spool bottom, one unbalanced force (power upwards) will being produced when high-pressure medium acts on upper and lower surface, be there will be effort phenomenon equally as changed into manpower driving.Therefore, a kind of new technological scheme of exigence solves above-mentioned technical problem.
Summary of the invention
The present invention is just for the technical problem existed in prior art, and the high pressure hand-operated block valve of inner equilibrium sliding valve style providing structure simple, easy to operate, this block valve really achieves inner equilibrium, has saved the load force of manpower or drive unit, has reduced cost.
To achieve these goals, technological scheme of the present invention is as follows, the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style, it is characterized in that, described block valve comprises block valve body, described block valve body comprises valve rod, with valve rod lower end with the use of spool, upper end and the thread support of described valve rod cooperatively interact, the upper end of thread support is connected with drive unit, what lead to drive unit rotarily drives valve rod, and the outside thread on valve rod and the internal thread of thread support interact, and then band movable valve plug moves up.
As a modification of the present invention, described spool is set to cascade spool.This arranges ingenious, stepped construction is set to just because of valve core structure, the sectional area that spool lower end surface sectional area adds upper valve rod lower end surface equals the sectional area of spool upper-end surface, equal pressure according to power and be multiplied by active area, the equal power that high-pressure medium is acted on spool two ends of upper and lower active area is just equal, spool can be in state of equilibrium, as long as now drive unit overcomes a little sealing and screw friction force, greatly reduces the load force of drive unit.
As a modification of the present invention, is provided with waist shaped hole in the middle of spool, make to be interlinked to the outside in the pressure medium of cascade spool, the quantity of described waist shaped hole is at least one, the design discharge when size and number of its reality depends on that block valve is opened.
As a modification of the present invention, sealing is provided with in described valve body, be traditionally arranged to be two kinds of sealings, described number of seals is set to 4 roads, topmost one seal inner diameter is larger, three roads are that same specification internal diameter is less below, two kinds of sealings respectively with the thickness major diameter fit of cascade spool, mainly play the effect of seal isolation medium.
As a modification of the present invention, described block valve also comprises contiguous block and screw clamp, and described valve rod is connected with spool with screw clamp by contiguous block.
As a modification of the present invention, the two ends up and down of described block valve body are provided with upper end cap and lower end cap.
As a modification of the present invention, described block valve also comprises drive unit, and described drive unit comprises the one in oil hydraulic cylinder, cylinder, Vidacare corp or handle.
As a modification of the present invention, the sectional area that the sectional area of described spool lower end adds upper valve rod lower end equals the sectional area of spool upper end.
Advantage of the present invention is as follows, and 1) overall structure is simple, cost is lower, easy to operate; 2) a kind of inner equilibrium sliding valve style high voltage cut-off valve, mainly comprise valve rod and stepped spool, the sectional area that spool lower end surface sectional area adds upper valve rod lower end surface equals the sectional area of spool upper-end surface, equal pressure according to power and be multiplied by active area, the equal power that high-pressure medium is acted on spool two ends of upper and lower active area is just equal, spool can be in state of equilibrium, as long as now drive unit overcomes a little sealing and screw friction force; 3) valve open rear high-voltage high-speed flowing medium not with sealing contact, can sealing life be extended; 4) water can discharged according to vent or gas judge the state of valve, namely illustrate that the sealing of valve or spool face wear and tear when vent has water to overflow; 5) spool medium design has several waist shaped holes, and valve inner is designed with four road primary seals, and waist shaped hole is knee-action between bottom three seals; 6) vent is designed with between twice combination seal topmost, to adapt to the spool volume-variation that knee-action produces between two sealings.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of spool of the present invention
1-handle in figure; 2-thread support; 3-upper end cap; 4-valve rod; 5-combination seal a; 6-contiguous block; 7-combination seal b; 8-spool; 9-block valve body; 10-lower end cap.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with the drawings and specific embodiments the present invention being made further instructions and introducing.
embodiment 1:
See Fig. 1, the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style, described block valve comprises block valve body, described block valve body comprises valve rod 4, with valve rod lower end with the use of spool 8, upper end and the thread support 2 of described valve rod cooperatively interact, the upper end of thread support 2 is connected with drive unit, rotarily drive valve rod 4 by drive unit, the internal thread of the outside thread on valve rod 4 and thread support 2 interacts, and then band movable valve plug 8 moves up.
embodiment 2:
See Fig. 2, as a modification of the present invention, described spool is set to cascade spool 8.This arranges ingenious, stepped construction is set to just because of valve core structure, the sectional area that spool lower end surface sectional area adds upper valve rod lower end surface equals the sectional area of spool upper-end surface, equal pressure according to power and be multiplied by active area, the equal power that high-pressure medium is acted on spool two ends of upper and lower active area is just equal, spool can be in state of equilibrium, as long as now drive unit overcomes a little sealing and screw friction force, greatly reduces the load force of drive unit.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:
See Fig. 1, as a modification of the present invention, is provided with waist shaped hole in the middle of spool 8, make to be interlinked to the outside in the pressure medium of cascade spool, the quantity of described waist shaped hole is at least one, the design discharge when size and number of its reality depends on that block valve is opened.All the other structures are identical with embodiment 1 with advantage.
As a modification of the present invention, in described valve body, be provided with sealing, described number of seals is set to 4 roads,
embodiment 4:
See Fig. 1, as a modification of the present invention, sealing is provided with in described valve body, described number of seals is set to 4 roads, topmost one seal inner diameter is larger, three roads are that same specification internal diameter is less below, two kinds of sealings respectively with the thickness major diameter fit of cascade spool, mainly play the effect of seal isolation medium.Be traditionally arranged to be two kinds of sealings, combination seal a5 and combination seal b7, indoor design has 4 road sealing grooves to be used for installing combination seal.All the other structures are identical with embodiment 1 with advantage.
embodiment 5:
See Fig. 1, as a modification of the present invention, described block valve also comprises contiguous block 6 and screw clamp, and described valve rod 4 is connected with spool with screw clamp by contiguous block 6.All the other structures are identical with embodiment 1 with advantage.
embodiment 6:
See Fig. 1, as a modification of the present invention, the two ends up and down of described block valve body are provided with upper end cap 3 and lower end cap 10.
embodiment 7:
See Fig. 1, as a modification of the present invention, described drive unit comprises the one in oil hydraulic cylinder, cylinder, Vidacare corp or handle 1.All the other structures are identical with embodiment 1 with advantage.
embodiment 8:
See Fig. 1, as a modification of the present invention, the sectional area that the sectional area of described spool 8 lower end adds upper valve rod 4 lower end equals the sectional area of spool 8 upper end.All the other structures are identical with embodiment 1 with advantage.
Working principle is introduced as follows,
See Fig. 1, Fig. 2, Fig. 2 is cascade spool 8 sketch, internal diameter is φ D, and the external diameter of upper end is φ A, and the external diameter of lower end is φ B, it is connected with screw clamp by contiguous block 6 with valve rod 4, valve rod 4 is φ C with the external diameter of upper end cap 3 contacting point, and contiguous block 6 is provided with several through holes, and two chambeies up and down that spool 8 and valve body 9 are formed communicate, the sectional area that the sectional area of spool 8 lower end adds upper valve rod 4 lower end equals the sectional area of spool 8 upper end, that is:
π(
)
2-π(
)
2+π(
)
2=π(
)
2-π(
)
2。
Waist shaped hole on the spool of position shown in Fig. 18 is between the most lower two combination seals, and valve is open mode; When high-pressure medium enters in valve body 9 from entrance, the upper and lower of spool 8 and inside is made to be full of high-pressure medium, and by waist shaped hole to outlet.Rotarily drive valve rod 4 by handle 1, the internal thread of the outside thread on valve rod 4 and thread support 2 interacts and spool 8 is moved up, and when the waist shaped hole on spool 8 moves between middle twice combination seal, now valve is in closed condition.No matter valve is in cut out or open mode, high-pressure medium is full of two chambeies up and down of spool 8 all the time, because upper and lower active area is equal, it is equal that high-pressure medium acts on the power that spool produces, spool is in balance quick condition, as long as manual drive power now overcomes a little sealing and screw friction force, close or open the equal leicht fallen D/A of valve by handle 1.
At least one in technical characteristics described in embodiment 2,3,4,5,6,7,8 and embodiment 1 can also be combined to form new mode of execution by the present invention.
It should be noted that above-described embodiment is only preferred embodiment of the present invention; be not used for limiting protection scope of the present invention; equivalent replacement done on the basis of the above or substitute and all belong to protection scope of the present invention, protection scope of the present invention is as the criterion with claims.
Claims (8)
1. the high pressure hand-operated block valve of inner equilibrium sliding valve style, it is characterized in that, described block valve comprises block valve body, described block valve body comprises valve rod, with valve rod lower end with the use of spool, upper end and the thread support of described valve rod cooperatively interact, the upper end of thread support is connected with drive unit, what lead to drive unit rotarily drives valve rod, and the outside thread on valve rod and the internal thread of thread support interact, and then band movable valve plug moves up.
2. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1, it is characterized in that, described spool is set to cascade spool.
3. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 2, is characterized in that, be provided with waist shaped hole in the middle of spool, the quantity of described waist shaped hole is at least one.
4. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1 or 2 or 3, it is characterized in that, be provided with sealing in described valve body, described number of seals is set to 4 roads.
5. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1 or 2 or 3, it is characterized in that, described block valve also comprises contiguous block and screw clamp, and described valve rod is connected with spool with screw clamp by contiguous block.
6. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1 or 2 or 3, it is characterized in that, the two ends up and down of described block valve body are provided with upper end cap and lower end cap.
7. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1 or 2 or 3, it is characterized in that, described drive unit comprises the one in oil hydraulic cylinder, cylinder, Vidacare corp, handle.
8. the high pressure hand-operated block valve of a kind of inner equilibrium sliding valve style according to claim 1 or 2 or 3, is characterized in that, the sectional area that the sectional area of described spool lower end adds upper valve rod lower end equals the sectional area of spool upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689050.0A CN104712783A (en) | 2013-12-17 | 2013-12-17 | Inner-equilibrium side-valve type high-pressure hand-operated block valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310689050.0A CN104712783A (en) | 2013-12-17 | 2013-12-17 | Inner-equilibrium side-valve type high-pressure hand-operated block valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712783A true CN104712783A (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310689050.0A Pending CN104712783A (en) | 2013-12-17 | 2013-12-17 | Inner-equilibrium side-valve type high-pressure hand-operated block valve |
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| CN (1) | CN104712783A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440013A (en) * | 2018-05-02 | 2019-11-12 | 岳民学 | Lower resistance shut-off valve (dangerous material use) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07139643A (en) * | 1993-06-16 | 1995-05-30 | Sagem Allumage Sa | Electric gate valve and gasoline-vapor circulating circuit with electric gate valve |
| CN2473404Y (en) * | 2001-03-07 | 2002-01-23 | 中国第二重型机械集团公司 | Balance type hydraulic gate valve |
| CN1752498A (en) * | 2005-10-14 | 2006-03-29 | 中国人民解放军总后勤部油料研究所 | Pressure reducing valve and method thereof |
| CN201599415U (en) * | 2010-01-08 | 2010-10-06 | 科福龙阀门集团有限公司 | Positive-pressure internal balance stop valve |
| JP2011052750A (en) * | 2009-09-01 | 2011-03-17 | Kawasaki Precision Machinery Ltd | Electromechanical transducer and fluid control assembly equipped therewith |
-
2013
- 2013-12-17 CN CN201310689050.0A patent/CN104712783A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07139643A (en) * | 1993-06-16 | 1995-05-30 | Sagem Allumage Sa | Electric gate valve and gasoline-vapor circulating circuit with electric gate valve |
| CN2473404Y (en) * | 2001-03-07 | 2002-01-23 | 中国第二重型机械集团公司 | Balance type hydraulic gate valve |
| CN1752498A (en) * | 2005-10-14 | 2006-03-29 | 中国人民解放军总后勤部油料研究所 | Pressure reducing valve and method thereof |
| JP2011052750A (en) * | 2009-09-01 | 2011-03-17 | Kawasaki Precision Machinery Ltd | Electromechanical transducer and fluid control assembly equipped therewith |
| CN201599415U (en) * | 2010-01-08 | 2010-10-06 | 科福龙阀门集团有限公司 | Positive-pressure internal balance stop valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440013A (en) * | 2018-05-02 | 2019-11-12 | 岳民学 | Lower resistance shut-off valve (dangerous material use) |
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Application publication date: 20150617 |