CN105736713A - Valve element assembly and stop valve - Google Patents
Valve element assembly and stop valve Download PDFInfo
- Publication number
- CN105736713A CN105736713A CN201610197045.1A CN201610197045A CN105736713A CN 105736713 A CN105736713 A CN 105736713A CN 201610197045 A CN201610197045 A CN 201610197045A CN 105736713 A CN105736713 A CN 105736713A
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- China
- Prior art keywords
- valve
- airtight
- flap
- watertight padding
- thread
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- 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.)
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a valve element assembly and a stop valve. The valve element assembly is characterized by comprising a valve rod, a valve clack and a sealing filler piece; the valve clack is coaxially and fixedly connected to the lower end of the valve rod; taper threads are distributed on the outer circumferential wall of the valve clack; a center through hole is formed in the sealing filler piece; and the sealing filler piece is made of plastic, and during using, a corresponding inner thread matched with the taper threads is generated in the center through hole of the sealing filler piece through the taper threads of the valve clack. After the valve element assembly is adopted in the stop valve, the stop valve is simple in structure and convenient to use, during using, only the sealing filler piece needs to be fixed in an installing groove of the stop valve firstly, the inner thread on the sealing filler piece is generated through the corresponding taper threads of the valve clack, the positioning problem does not need to be considered, and matching is reliable.
Description
Technical field
The present invention relates to valve field, be specifically applied to various gas-liquid tank, be particularly well-suited to the high pressure fluid reservoir such as chlorine, liquefied gas, and the core assembly of the vertical or horizontal stop valve on highly pressurised liquid or gas transmission pipeline and this stop valve.
Background technology
Stop valve, is also pipe valve, is one of most popular a kind of valve, and why very popular it is, be due in opening and closing process between sealing surface frictional force little, relatively durable, Lift is little, easy to manufacture, easy to maintenance, it is applicable not only to mesolow, and is applicable to high pressure.At present, stop valve generally includes valve body, flap and for driving flap to do the valve rod of upper and lower rectilinear motion, the isolation inwall with opening it is provided with in valve body, isolation inwall both sides respectively constitute snout cavity and outlet plenum, snout cavity and outlet plenum are conducted by opening, valve rod is drawn together the built-in portion being placed in valve inner and is placed on the external portion outside valve body, the other end in relatively external portion of the built-in portion of described valve body and flap are connected, and described flap is placed in conducting place of snout cavity and outlet plenum and can conflict with isolation inwall and arrange formation and be tightly connected.Flap is all adopt plane to plane with the sealing means isolating inwall, or adopt the conical surface sealing structure to the conical surface, even across remaining a need for after numerical control polish grinding, traditional flat seal ensures that the sealing pair of valve seat flap has good surface roughness, and need the microcosmic gap that significantly high sealing force is filled up between sealing pair to the seal pressure ensureing sealing surface by sealing surface elastic deformation that valve seal is realized.That is, such sealing surface structure, the sealing property that easily there is sealing surface is not up to standard, medium in valve body goes out from the clearance portion bit stream of sealing surface, if wanting so that sealing property is strong, requirement on machining accuracy is just relatively high, it is necessary to valve base sealing portion and flap sealing are carried out high-precision cooperation, complex process.And remain in the impurity on sealing surface after using and also can affect sealing effectiveness, causing that sealing effectiveness declines, service life is greatly shortened.The sealing structure of the employing thread forms also having, but this structure need to be directed at screw thread, and to position installation fixing, location difficulty, careless slightly to may result in sealing destructurized.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, easy for installation, sealing effectiveness is better, the core assembly for stop valve being greatly improved service life and corresponding stop valve.
The basic technical scheme realizing the object of the invention core assembly is: a kind of core assembly, it is structurally characterized in that: include valve rod, flap and airtight and watertight padding part.Valve rod upper end is provided with connecting portion, and connecting portion connects for fixing with corresponding handwheel or spanner.Valve rod is provided with external thread section, and external thread section is positioned at the lower section of connecting portion.The bottom of valve rod is column sealed connecting portion.Flap is fixedly and coaxially connected on the lower end being arranged on valve rod.On the periphery wall of flap, distribution has taper thread.The external screw thread pitch of the external thread section on described valve rod is equal with the pitch of the taper thread on described flap.Airtight and watertight padding part is provided with center through hole.Airtight and watertight padding part is made up of plastics or soft metal.In the center through hole of airtight and watertight padding part, generated the female thread matched accordingly with this taper thread by the taper thread of flap during use.
Technical scheme based on the basic technical scheme of above-mentioned core assembly is: the thickness of described airtight and watertight padding part is not less than the axial height of described taper thread.
Technical scheme based on the appropriate technical solution of above-mentioned core assembly is: the depth of thread of described taper thread from bottom to top gradually becomes shallower as.
Technical scheme based on the appropriate technical solution of above-mentioned core assembly is: the end face of described flap is provided with the circle with this flap one and the distribution of concentricity axle or annular cover plate portion.The bottom edge of ceiling plate portion is suitable to cover in the upper end of described airtight and watertight padding part, forms contact and seals structure.
Technical scheme based on the appropriate technical solution of above-mentioned core assembly is: the screw thread on described taper thread is many screw threads of single thread or uniform pitch.
The basic technical scheme realizing the object of the invention stop valve is: include core assembly.Core assembly includes valve rod, flap and airtight and watertight padding part.Valve rod upper end is provided with connecting portion, and connecting portion connects for fixing with corresponding handwheel or spanner.Valve rod is provided with external thread section, and external thread section is positioned at the lower section of connecting portion.The bottom of valve rod is column sealed connecting portion.Flap is fixedly and coaxially connected on the lower end being arranged on valve rod.On the periphery wall of flap, distribution has taper thread.The external screw thread pitch of the external thread section on described valve rod is equal with the pitch of the taper thread on described flap.Airtight and watertight padding part is provided with center through hole.Airtight and watertight padding part is made up of plastics or soft metal.In the center through hole of airtight and watertight padding part, generated the female thread matched accordingly with this taper thread by the taper thread of flap during use.
The remainder of stop valve includes: valve pocket, and the sidewall of this valve pocket is arranged with inlet union and outlet connection.The outlet of inlet union extends in valve pocket and arranges upward.The exit of inlet union is provided with fitting recess, and the inwall of fitting recess is circumferentially with, along it, the groove that opening is inside.
The airtight and watertight padding part of core assembly is fixedly installed in this fitting recess.When for the first time flap being screwed on airtight and watertight padding part, in the center through hole of airtight and watertight padding part, the female thread matched accordingly is generated with this taper thread, simultaneously because the appropriate section of the airtight and watertight padding part that is squeezed can be extruded in the groove of fitting recess by the taper thread of flap.
The upper end of valve pocket seals and is provided with valve gap.The external thread section of the valve rod of core assembly female thread corresponding with the top of described valve gap matches, and the column sealed connecting portion of valve rod is coordinated with valve bonnet seal by sealing member.
Technical scheme based on the basic technical scheme of above-mentioned stop valve is: be fixedly connected with handwheel on the upper end connecting portion of valve rod.
The basic technical scheme realizing the object of the invention another kind stop valve is: described stop valve is corner stop valve.Corner stop valve includes core assembly.Core assembly includes valve rod, flap and airtight and watertight padding part.Valve rod upper end is provided with connecting portion, and connecting portion connects for fixing with corresponding handwheel or spanner.Valve rod is provided with external thread section, and external thread section is positioned at the lower section of connecting portion.The bottom of valve rod is column sealed connecting portion.Flap is fixedly and coaxially connected on the lower end being arranged on valve rod.On the periphery wall of flap, distribution has taper thread.The external screw thread pitch of the external thread section on described valve rod is equal with the pitch of the taper thread on described flap.Airtight and watertight padding part is provided with center through hole.Airtight and watertight padding part is made up of plastics or soft metal.In the center through hole of airtight and watertight padding part, generated the female thread matched accordingly with this taper thread by the taper thread of flap during use.
The remainder of corner stop valve includes: the second valve pocket, and the orthogonal adjacent two side of this second valve pocket is respectively equipped with the second inlet union and the second outlet connection.The axis of the second inlet union and the valve rod of core assembly are coaxially disposed.The outlet of the second inlet union extends in the second valve pocket and arranges upward.The exit of the second inlet union is provided with the second fitting recess, and the inwall of the second fitting recess is circumferentially with, along it, the second groove that opening is inside.The airtight and watertight padding part of core assembly is fixedly installed in this second fitting recess.When for the first time flap being screwed on airtight and watertight padding part, in the center through hole of airtight and watertight padding part, the female thread matched accordingly is generated with this taper thread, simultaneously because the appropriate section of the airtight and watertight padding part that is squeezed can be extruded in the second groove of the second fitting recess by the taper thread of flap.
The upper end of the second valve pocket seals and is provided with the second valve gap.The external thread section of the valve rod of core assembly female thread corresponding with the top of described second valve gap matches, and the column sealed connecting portion of valve rod is coordinated by the second sealing member and the second valve bonnet seal.
Technical scheme based on the basic technical scheme of above-mentioned stop valve is: be fixedly connected with the second handwheel on the upper end connecting portion of valve rod.
The basic technical scheme realizing the third stop valve of the object of the invention is: described stop valve is emergency cut-off stop valve.Emergency cut-off stop valve includes core assembly and emergency shutoff device.Core assembly includes valve rod, flap and airtight and watertight padding part.Valve rod upper end is provided with connecting portion, and connecting portion connects for fixing with corresponding handwheel or spanner.Valve rod is provided with external thread section, and external thread section is positioned at the lower section of connecting portion.The bottom of valve rod is column sealed connecting portion.Flap is fixedly and coaxially connected on the lower end being arranged on valve rod.On the periphery wall of flap, distribution has taper thread.The external screw thread pitch of the external thread section on described valve rod is equal with the pitch of the taper thread on described flap.Airtight and watertight padding part is provided with center through hole.Airtight and watertight padding part is made up of plastics or soft metal.In the center through hole of airtight and watertight padding part, generated the female thread matched accordingly with this taper thread by the taper thread of flap during use.
The remainder of emergency cut-off stop valve includes: the 3rd valve pocket, and the orthogonal adjacent two side of the 3rd valve pocket is respectively equipped with triple feed inlet joint and the 3rd outlet connection.3rd outlet of triple feed inlet joint extends in the 3rd valve pocket and arranges upward.3rd exit of triple feed inlet joint is provided with the 3rd fitting recess, and the inwall of the 3rd fitting recess is circumferentially with, along it, the 3rd groove that opening is inside.The airtight and watertight padding part of core assembly is fixedly installed in the 3rd fitting recess.When for the first time flap being screwed on airtight and watertight padding part, in the center through hole of airtight and watertight padding part, the female thread matched accordingly is generated with this taper thread, simultaneously because the appropriate section of the airtight and watertight padding part that is squeezed can be extruded in the 3rd groove of the 3rd fitting recess by the taper thread of flap.
The upper end of the 3rd valve pocket seals and is provided with the 3rd valve gap.The external thread section of the valve rod of core assembly female thread corresponding with the top of described 3rd valve gap matches, and the column sealed connecting portion of valve rod is coordinated by the 3rd sealing member and the 3rd valve bonnet seal.
Emergency shutoff device is fixedly installed on triple feed inlet joint, in emergency circumstances shutting off the passage of the 3rd valve pocket.
Technical scheme based on the basic technical scheme of above-mentioned stop valve is: be fixedly connected with the 3rd handwheel on the upper end connecting portion of valve rod.
Technical scheme based on the basic technical scheme of above-mentioned stop valve is: be provided with spring shaft fixed pipe support in triple feed inlet joint, is cannula portion in the middle part of spring shaft fixed pipe support, and cannula portion is provided with through the through hole that it is upper and lower.Cannula portion is fixedly installed in triple feed inlet joint by the four articles of dowel verticals arranged along its circumference angle at equal intervals.The lower surface of triple feed inlet joint is provided with the seal projection portion of annular.
Emergency shutoff device includes valve seat.Valve base sealing is fixedly installed on triple feed inlet joint bottom.Valve seat is in its circumferential side wall and is provided with through its inside and outside import on base plate.The fixing pipe of spring shaft is arranged on spring shaft fixed pipe support, and spring shaft is slidably arranged in the fixing pipe of spring shaft.Spring shaft lower end is provided with sealing gasket friction top.Sealing gasket friction top is fixing with gasket base to be connected, and the compacted lid of sealing gasket and gasket base are fixedly clamped, and during use, the seal projection portion of the lower surface of sealing gasket and triple feed inlet joint forms contact and seals structure.Compression spring it is provided with between gasket base and valve seat base plate.On triple feed inlet joint, rotary seal is provided with shifting block axle.The one end of the shifting block axle being arranged in triple feed inlet joint is provided with shifting block.Shifting block is positioned on spring shaft upper end, and under stop valve normal operating conditions, spring shaft is pushed up downwards by shifting block, makes the seal projection portion of the lower surface of sealing gasket and triple feed inlet joint depart from, forms corresponding passage.Power set are fixedly installed on outside the 3rd valve pocket.Power set drive the one end of the shifting block axle being positioned at outside triple feed inlet joint to make shifting block axle rotate, thus driving shifting block to rotate.
Technical scheme based on the technical scheme of above-mentioned each corresponding stop valve is: the thickness of the airtight and watertight padding part of described core assembly is not less than the axial height of described taper thread.
Technical scheme based on the technical scheme of above-mentioned each corresponding stop valve is: the depth of thread of the taper thread of described core assembly from bottom to top gradually becomes shallower as.
Technical scheme based on the technical scheme of above-mentioned each corresponding stop valve is: the end face of the flap of described core assembly is provided with the circle with this flap one and the distribution of concentricity axle or annular cover plate portion.The bottom edge of ceiling plate portion is suitable to cover in the upper end of described airtight and watertight padding part, forms contact and seals structure.
Technical scheme based on the technical scheme of above-mentioned each corresponding stop valve is: the screw thread on the taper thread of described core assembly is many screw threads of single thread or uniform pitch.
The present invention has positive effect: the core assembly simple in construction of (1) present invention, easy for installation, only need to airtight and watertight padding part be first fixed in the mounting groove of corresponding stop valve during use, female thread on airtight and watertight padding part is generated by the taper thread of corresponding flap, without the concern for orientation problem, and coordinate reliable.The airtight and watertight padding part of the core assembly of the present invention and the material of flap can select accordingly, as long as flap can attack airtight and watertight padding part certainly, producing the screw thread that matches accordingly on airtight and watertight padding part and to play sealing function just passable, therefore the selection of the material of airtight and watertight padding part can also carry out other selections adapted according to the material of flap except plastics and soft metal.
(2) when the core assembly of the present invention uses, drive valve rod to rotate by corresponding handwheel or spanner, to drive flap to screw in airtight and watertight padding part, make the taper thread on flap seal with the female thread of airtight and watertight padding part and coordinate, and airtight and watertight padding part is compressed.Owing to airtight and watertight padding part is compacted and coordinates with the taper thread sealing of flap, and thrust is more big, and the pressure that this valve can bear is more big；This valve resistance simultaneously has basal area relatively big (periphery wall for flap), opening and closing feature light and handy, easily manipulation.Even if there is impurity on the taper thread of the center through hole inwall of airtight and watertight padding part or flap, this impurity can be ground rejecting by described taper thread easily or be extruded in airtight and watertight padding part and form sealing surface, do not affect its sealing, and service life is greatly prolonged.When there is relatively lossy in airtight and watertight padding part, only need to change airtight and watertight padding part in time can be continuing with, therefore have simple in construction, overlong service life, maintenance cost is cheap and is suitable to the feature avoiding leaking, this valve is particularly well-suited to the high pressure fluid reservoir such as chlorine, liquefied gas, and on highly pressurised liquid or gas transmission pipeline, and can use as vertical or horizontal valve body.
(3) flap of the core assembly of the present invention is provided with ceiling plate portion, this ceiling plate portion also forms corresponding face and contacts sealing structure with the upper surface of airtight and watertight padding part, even if the thread seal of airtight and watertight padding part nor affects on its sealing effectiveness after being damaged, not only use relatively reliable, and service life is further enhanced.
(4) the external screw thread pitch of the external thread section of the valve rod of the core assembly of the present invention is equal with the pitch of the taper thread on described flap, to realize the synchronization axial displacement of valve rod and flap, it is prevented that accelerate the loss of airtight and watertight padding part because the displacement of valve rod and flap is asynchronous.
(5) double thread that screw thread is single thread or uniform pitch on the taper thread of the core assembly of the present invention, with the thread pitch on the external thread section of described valve rod bigger time, screw thread on taper thread adopts the double thread of uniform pitch, otherwise, then adopt single thread, can fully ensure that sealing effectiveness.
(6) when the core assembly of the present invention is applied on corresponding stop valve, when for the first time flap being screwed on airtight and watertight padding part, in the center through hole of airtight and watertight padding part, the female thread matched accordingly is generated with this taper thread by the taper thread of flap, simultaneously because be squeezed, the appropriate section of airtight and watertight padding part can be extruded in the groove of fitting recess, the groove of this fitting recess makes airtight and watertight padding part have corresponding extending space, what not only contribute to flap screws installation, the appropriate section of the airtight and watertight padding part being simultaneously extruded in the groove of fitting recess makes to form interlocking between airtight and watertight padding part and fitting recess and coordinates, coordinate more solid and reliable, but also formed and seal structure accordingly, sealing reliability between airtight and watertight padding part and fitting recess is also improved.
(7) the core assembly simple in construction that the stop valve of the present invention adopts, easy for installation, only need to airtight and watertight padding part be first fixed in the mounting groove of corresponding stop valve during use, female thread on airtight and watertight padding part is generated by the taper thread of corresponding flap, without the concern for orientation problem, and coordinate reliable.The service life of stop valve obtains great lifting.When for the first time flap being screwed on airtight and watertight padding part, in the center through hole of airtight and watertight padding part, the female thread matched accordingly is generated with this taper thread by the taper thread of flap, simultaneously because be squeezed, the appropriate section of airtight and watertight padding part can be extruded in the groove of fitting recess, the groove of this fitting recess makes airtight and watertight padding part have corresponding extending space, what not only contribute to flap screws installation, the appropriate section of the airtight and watertight padding part being simultaneously extruded in the groove of fitting recess makes to form interlocking between airtight and watertight padding part and fitting recess and coordinates, coordinate more solid and reliable, but also formed and seal structure accordingly, sealing reliability between airtight and watertight padding part and fitting recess is also improved.
(8) the corner stop valve in the stop valve of the present invention is in use, can reduce use one elbow, decrease leak point while alleviating workload so that the reliability of whole pipeline also arrived raising.
(9) the emergency cut-off stop valve in the stop valve of the present invention is provided with emergency shutoff device, in emergency circumstances cutting off, further increases the safety of pipeline.
Accompanying drawing explanation
Fig. 1 is the structural representation of the core assembly of the present invention；
Structural representation when Fig. 2 is the flap of the core assembly of the present invention and airtight and watertight padding part matches；
Fig. 3 is the structural representation of a kind of stop valve of the present invention；
Fig. 4 is the structural representation of a kind of corner stop valve of the present invention；
Fig. 5 is the structural representation of a kind of emergency cut-off stop valve of the present invention；
Fig. 6 is the schematic diagram during left anterior-superior part observation from Fig. 5, and wherein handwheel is not drawn into；
Fig. 7 is the left view schematic diagram of Fig. 5；
Fig. 8 is the A-A cross-sectional schematic in Fig. 7, and wherein handwheel is not drawn into.
Labelling in above-mentioned accompanying drawing is as follows:
Core assembly 1,
Valve rod 1-1, connecting portion 1-1a, external thread section 1-1b, column sealed connecting portion 1-1c,
Flap 1-2, taper thread 1-2a, ceiling plate portion 1-2b,
Airtight and watertight padding part 1-3,
Stop valve 2, valve pocket 2-1, inlet union 2-2, outlet connection 2-3, export 2-4, fitting recess 2-4-1, groove 2-4-1a, valve gap 2-5, sealing member 2-6, clamping cap 2-7, handwheel 2-8,
Corner stop valve 3, the second valve pocket 3-1, the second inlet union 3-2, the second outlet connection 3-3, export 3-4, the second fitting recess 3-4-1, the second groove 3-4-1a, the second valve gap 3-5, the second sealing member 3-6, the second clamping cap 3-7, the second handwheel 3-8,
Emergency cut-off stop valve 4, emergency shutoff device 4a, valve seat 4a-1, import 4a-1-1, spring shaft fixes pipe 4a-2, spring shaft 4a-3, sealing gasket friction top 4a-4, gasket base 4a-5, sealing gasket 4a-6, compression spring 4a-7, shifting block axle 4a-8, shifting block 4a-9, 3rd valve pocket 4-1, triple feed inlet joint 4-2, spring shaft fixed pipe support 4-2-1, cannula portion 4-2-1a, seal projection portion 4-2-2, 3rd outlet connection 4-3, outlet 4-4, 3rd fitting recess 4-4-1, 3rd groove 4-4-1a, 3rd valve gap 4-5, 3rd sealing member 4-6, 3rd clamping cap 4-7, 3rd handwheel 4-8.
Detailed description of the invention
The orientation shown in Fig. 1 that describes in the orientation of the present invention carries out, namely the direction up and down shown in Fig. 1 is the direction up and down of description, and a side of court of Fig. 1 institute is front, and the side deviating from Fig. 1 is rear.
(embodiment 1, core assembly)
Seeing Fig. 1 and Fig. 2, the core assembly 1 of the present invention includes valve rod 1-1, flap 1-2 and airtight and watertight padding part 1-3.
See that Fig. 1 and Fig. 2, valve rod 1-1 upper end is provided with connecting portion 1-1a, connecting portion 1-1a and connects for fixing with corresponding handwheel or spanner, control valve rod 1-1 thereby through this handwheel or spanner and rotate.Valve rod 1-1 is provided with external thread section 1-1b, external thread section 1-1b and is positioned at the lower section of connecting portion 1-1a, and the length of external thread section 1-1b can determine according to actual needs.The bottom of valve rod 1-1 is column sealed connecting portion 1-1c.Flap 1-2 is fixedly and coaxially connected on the lower end being arranged on valve rod 1-1.On the periphery wall of flap 1-2, distribution has taper thread 1-2a.The external screw thread pitch of the external thread section 1-1b on described valve rod 1-1 is equal with the pitch of the taper thread 1-2a on described flap 1-2, to realize the synchronization axial displacement of valve rod 1-1 and flap 1-2.The double thread that screw thread is single thread or uniform pitch on described taper thread 1-2a, with the thread pitch on the external thread section 1-1b of described valve rod 1-1 bigger time, screw thread on taper thread 1-2a adopts the double thread of uniform pitch, otherwise, then adopt single thread.The end face of described flap 1-2 is provided with the circle with this flap 1-2 one and the distribution of concentricity axle or annular cover plate portion 1-2b.
Seeing Fig. 1 and Fig. 2, airtight and watertight padding part 1-3 is provided with center through hole 1-3a.Airtight and watertight padding part 1-3 is made of plastics, and the present embodiment adopts polytetrafluoroethylmaterial material to make.Airtight and watertight padding part 1-3 also can have and is made up of soft metal, for instance plumbous.The airtight and watertight padding part of core assembly and the material of flap can select accordingly, as long as flap can attack airtight and watertight padding part certainly, producing the screw thread that matches accordingly on airtight and watertight padding part and to play sealing function just passable, therefore the selection of the material of airtight and watertight padding part can also carry out other selections adapted according to the material of flap except plastics and soft metal.Generated corresponding with this taper thread 1-2a female thread matched during use in the center through hole 1-3a of airtight and watertight padding part 1-3 by the taper thread 1-2a of flap 1-2.The depth of thread of taper thread 1-2a from bottom to top gradually becomes shallower as.To guarantee in the described downward displacement process of flap 1-2, flap 1-2 and described airtight and watertight padding part 1-3 is made fully to compress and realize threaded sealing fit.The thickness of described airtight and watertight padding part 1-3 is not less than the axial height of described taper thread 1-2a, so that the taper thread 1-2a of flap 1-2 is suitable to fully and the contact internal walls of airtight and watertight padding part 1-3, compresses and realizes threaded sealing fit.Described airtight and watertight padding part 1-3 can adopt threaded engagement or employing to be bolted in the corresponding fitting recess of corresponding stop valve when using, or described airtight and watertight padding part 1-3 direct pouring is in the corresponding fitting recess of corresponding stop valve, the cross section of described fitting recess is polygon or ellipse, to prevent flap 1-2 and airtight and watertight padding part 1-3 from occurring the situation of synchronous rotary in threaded engagement process.The airtight and watertight padding part 1-3 of the present invention is provided with external screw thread, and during use, threaded engagement is in the corresponding fitting recess of corresponding stop valve.
See Fig. 1 and Fig. 2, when described flap 1-2 threaded engagement is in the center through hole of described airtight and watertight padding part 1-3, the bottom edge of this ceiling plate portion 1-2b is suitable to cover in the upper end of described airtight and watertight padding part 1-3, with crush seal packing element 1-3, improving the reliability of the sealing property between described flap 1-2 and airtight and watertight padding part 1-3 and threaded engagement, the bottom surface of ceiling plate portion 1-2b forms face with the upper end of airtight and watertight padding part 1-3 and contacts sealing structure simultaneously.
(embodiment 2, stop valve)
Such as Fig. 3, the stop valve 2 of the present embodiment includes core assembly, and described core assembly adopts the core assembly 1 described in embodiment 1.Stop valve 2 remainder includes: valve pocket 2-1, and the sidewall of this valve pocket 2-1 is arranged with inlet union 2-2 and outlet connection 2-3；The outlet 2-4 of inlet union 2-2 extends in valve pocket 2-1 and arranges upward；The outlet 2-4 place of inlet union 2-2 is provided with fitting recess 2-4-1, fitting recess 2-4-1 is provided with female thread, the airtight and watertight padding part 1-3 of the core assembly 1 described in embodiment 1 screws and is fixedly installed in this fitting recess 2-4-1, and the inwall of fitting recess 2-4-1 is circumferentially with, along it, the groove 2-4-1a that opening is inside.When for the first time flap 1-2 being screwed on airtight and watertight padding part 1-3, the appropriate section of the airtight and watertight padding part 1-3 that is squeezed generated corresponding with this taper thread 1-2a female thread matched in the center through hole 1-3a of airtight and watertight padding part 1-3 by the taper thread 1-2a of flap 1-2, simultaneously because can be extruded in the groove 2-4-1a of fitting recess 2-4-1.The upper end of valve pocket 2-1 seals and is provided with valve gap 2-5；The external thread section 1-1b of the valve rod 1-1 of the core assembly 1 described in embodiment 1 female thread corresponding with the top of described valve gap 2-5 matches, and the column sealed connecting portion 1-1c of valve rod 1-1 is sealed by sealing member 2-6 and valve gap 2-5 and coordinates；Sealing member 2-6 is sealed by clamping cap 2-7 and is fixedly installed in valve gap 2-5.Clamping cap 2-7 is fixedly installed on valve gap 2-5.The upper end connecting portion 1-1a of valve rod 1-1 is fixedly connected with handwheel 2-8, valve rod 1-1 can be made to rotate by rotation hand wheel 2-8.
Valve pocket 2-1, valve gap 2-5, valve rod 1-1 and flap 1-2 generally select rustless steel to make；Also dependent on requirements such as actual application scenario, anticorrosion, compressive resistances, select different materials.
(embodiment 3, stop valve)
Such as Fig. 4, the stop valve of the present embodiment is corner stop valve 3, and corner stop valve 3 includes core assembly, and described core assembly adopts the core assembly 1 described in embodiment 1.Corner stop valve 3 remainder includes: the second valve pocket 3-1, and the orthogonal adjacent two side of this second valve pocket 3-1 is respectively equipped with the second inlet union 3-2 and the second outlet connection 3-3；The valve rod 1-1 of the axis of the second inlet union 3-2 and core assembly 1 is coaxially disposed.The outlet 3-4 of the second inlet union 3-2 extends in the second valve pocket 3-1 and arranges upward；The outlet 3-4 place of the second inlet union 3-2 is provided with the second fitting recess 3-4-1, and the second fitting recess 3-4-1 is provided with female thread, and the airtight and watertight padding part 1-3 of the core assembly 1 described in embodiment 1 screws and is fixedly installed in this second fitting recess 3-4-1.The inwall of the second fitting recess 3-4-1 is circumferentially with, along it, the second groove 3-4-1a that opening is inside.When for the first time flap 1-2 being screwed on airtight and watertight padding part 1-3, the appropriate section of the airtight and watertight padding part 1-3 that is squeezed generated corresponding with this taper thread 1-2a female thread matched in the center through hole 1-3a of airtight and watertight padding part 1-3 by the taper thread 1-2a of flap 1-2, simultaneously because can be extruded in the second groove 3-4-1a of the second fitting recess 3-4-1.The upper end of the second valve pocket 3-1 seals and is provided with the second valve gap 3-5；The external thread section 1-1b of the valve rod 1-1 of the core assembly 1 described in embodiment 1 female thread corresponding with the top of described second valve gap 3-5 matches, and the column sealed connecting portion 1-1c of valve rod 1-1 is sealed by the second sealing member 3-6 and the second valve gap 3-5 and coordinates；Second sealing member 3-6 is sealed by the second clamping cap 3-7 and is fixedly installed in the second valve gap 3-5.Second clamping cap 3-7 is fixedly installed on the second valve gap 3-5.The upper end connecting portion 1-1a of valve rod 1-1 is fixedly connected with the second handwheel 3-8, valve rod 1-1 can be made to rotate by rotating the second handwheel 3-8.
Second valve pocket 3-1, the second valve gap 3-5, valve rod 1-1 and flap 1-2 generally select rustless steel to make；Also dependent on requirements such as actual application scenario, anticorrosion, compressive resistances, select different materials.
The corner stop valve 3 of the present embodiment is contained in the corner of corresponding pipeline when using, be possible not only to reduce using 1 elbow, and decrease workload, simultaneously because the minimizing of elbow also reduces the risk that pipeline is revealed.
(embodiment 4, stop valve)
Seeing Fig. 5 to Fig. 8, the stop valve of the present embodiment is emergency cut-off stop valve 4, and emergency cut-off stop valve 4 includes core assembly and emergency shutoff device 4a.Described core assembly adopts the core assembly 1 described in embodiment 1.Emergency cut-off stop valve 4 remainder also includes: the 3rd valve pocket 4-1, and the orthogonal adjacent two side of the 3rd valve pocket 4-1 is respectively equipped with triple feed inlet joint 4-2 and the three outlet connection 4-3；The 3rd outlet 4-4 of triple feed inlet joint 4-2 extends in the 3rd valve pocket 4-1 and arranges upward；Triple feed inlet joint 4-2 is provided with spring shaft fixed pipe support 4-2-1, is that cannula portion 4-2-1a, cannula portion 4-2-1a are provided with through its upper and lower through hole in the middle part of spring shaft fixed pipe support 4-2-1.Cannula portion 4-2-1a is fixedly installed in triple feed inlet joint 4-2 by the four articles of dowel verticals arranged along its circumference angle at equal intervals.The lower surface of triple feed inlet joint 4-2 is provided with the seal projection portion 4-2-2 of annular.The 3rd outlet 4-4 place of triple feed inlet joint 4-2 is provided with the 3rd fitting recess 4-4-1, the airtight and watertight padding part 1-3 of the core assembly 1 described in embodiment 1 screws and is fixedly installed in the 3rd fitting recess 4-4-1, and the inwall of the 3rd fitting recess 4-4-1 is circumferentially with, along it, the 3rd groove 4-4-1a that opening is inside.When for the first time flap 1-2 being screwed on airtight and watertight padding part 1-3, the appropriate section of the airtight and watertight padding part 1-3 that is squeezed generated corresponding with this taper thread 1-2a female thread matched in the center through hole 1-3a of airtight and watertight padding part 1-3 by the taper thread 1-2a of flap 1-2, simultaneously because can be extruded in the 3rd groove 4-4-1a of the 3rd fitting recess 4-4-1.Emergency shutoff device 4a is fixedly installed on triple feed inlet joint 4-2, in emergency circumstances shutting off the passage of the 3rd valve pocket 4-1.Emergency shutoff device 4a includes valve seat 4a-1.Valve seat 4a-1 seals and is fixedly installed on triple feed inlet joint 4-2 bottom.Valve seat 4a-1 is in its circumferential side wall and is provided with through its inside and outside import 4a-1-1 on base plate.The fixing pipe 4a-2 of spring shaft is arranged on spring shaft fixed pipe support 4-2-1, and spring shaft 4a-3 is slidably arranged in the fixing pipe 4a-2 of spring shaft.Spring shaft 4a-3 lower end is provided with sealing gasket friction top 4a-4.Sealing gasket friction top 4a-4 and gasket base 4a-5 is fixing to be connected, and sealing gasket 4a-6 compacted lid 4a-4 and gasket base 4a-5 is fixedly clamped, during use, the seal projection portion 4-2-2 of the lower surface of sealing gasket 4a-6 and triple feed inlet joint 4-2 forms contact and seals structure.Compression spring 4a-7 it is provided with between gasket base 4a-5 and valve seat 4a-1 base plate.When emergency cut-off function enables, sealing gasket 4a-6 is pushed up the seal projection portion 4-2-2 of the lower surface to triple feed inlet joint 4-2 by compression spring 4a-7 so that it is be in close contact with seal projection portion 4-2-2, thus cutting off.On triple feed inlet joint 4-2, rotary seal is provided with shifting block axle 4a-8.The one end of the shifting block axle 4a-8 being arranged in triple feed inlet joint 4-2 is provided with shifting block 4a-9.Shifting block 4a-9 is positioned on spring shaft 4a-3 upper end, and under stop valve normal operating conditions, spring shaft 4a-3 is pushed up downwards by shifting block 4a-9, makes the seal projection portion 4-2-2 of the lower surface of sealing gasket 4a-6 and triple feed inlet joint 4-2 depart from, forms corresponding passage.Power set (are not drawn in Fig. 5) being fixedly installed on outside the 3rd valve pocket 4-1.Described power set can be cylinder or hydraulic cylinder or drive motor.Power set drive the one end of the shifting block axle 4a-8 being positioned at outside triple feed inlet joint 4-2 to make shifting block axle 4a-8 rotate, thus driving shifting block 4a-9 to rotate.When emergency cut-off function enables, power set drive shifting block axle 4a-8 to rotate, and make shifting block 4a-9 be rotated up, and sealing gasket 4a-6 is pushed up the seal projection portion 4-2-2 of the lower surface to triple feed inlet joint 4-2 by compression spring 4a-7, make itself and seal projection portion 4-2-2 close contact, thus cutting off.The upper end of the 3rd valve pocket 4-1 seals and is provided with the 3rd valve gap 4-5；The external thread section 1-1b of the valve rod 1-1 of the core assembly 1 described in embodiment 1 female thread corresponding with the top of described 3rd valve gap 4-5 matches, and the column sealed connecting portion 1-1c of valve rod 1-1 is sealed by the 3rd sealing member 4-6 and the three valve gap 4-5 and coordinates；3rd sealing member 4-6 is sealed by the 3rd clamping cap 4-7 and is fixedly installed in the 3rd valve gap 4-5.3rd clamping cap 4-7 is fixedly installed on the 3rd valve gap 4-5.The upper end connecting portion 1-1a of valve rod 1-1 is fixedly connected with the 3rd handwheel 4-8, valve rod 1-1 can be made to rotate by rotating the 3rd handwheel 4-8.
3rd valve pocket 4-1, the 3rd valve gap 4-5, valve rod 1-1 and flap 1-2 generally select rustless steel to make；Also dependent on requirements such as actual application scenario, anticorrosion, compressive resistances, select different materials.
Above example is used for illustrative purposes only; but not limitation of the present invention; person skilled in the relevant technique is without departing from the spirit and scope of the present invention; various conversion and change can also be made; can also transforming accordingly according to the inspiration of above-described embodiment in concrete application process, therefore all equivalent technical schemes all should be included within the scope of patent protection of the present invention.
Claims (16)
1. a core assembly (1), it is characterised in that: include valve rod (1-1), flap (1-2) and airtight and watertight padding part (1-3)；Valve rod (1-1) upper end is provided with connecting portion (1-1a), and connecting portion (1-1a) connects for fixing with corresponding handwheel or spanner；Valve rod (1-1) is provided with external thread section (1-1b), and external thread section (1-1b) is positioned at the lower section of connecting portion (1-1a)；The bottom of valve rod (1-1) is column sealed connecting portion (1-1c)；Flap (1-2) is fixedly and coaxially connected on the lower end being arranged on valve rod (1-1)；On the periphery wall of flap (1-2), distribution has taper thread (1-2a)；The external screw thread pitch of the external thread section (1-1b) on described valve rod (1-1) is equal with the pitch of the taper thread (1-2a) on described flap (1-2)；Airtight and watertight padding part (1-3) is provided with center through hole (1-3a)；Airtight and watertight padding part (1-3) is made up of plastics or soft metal；In the center through hole (1-3a) of airtight and watertight padding part (1-3), generated the female thread matched accordingly with this taper thread (1-2a) by the taper thread (1-2a) of flap (1-2) during use.
2. core assembly according to claim 1 (1), it is characterised in that: the thickness of described airtight and watertight padding part (1-3) is not less than the axial height of described taper thread (1-2a).
3. core assembly according to claim 1 (1), it is characterised in that: the depth of thread of described taper thread (1-2a) from bottom to top gradually becomes shallower as.
4. according to the core assembly (1) one of claims 1 to 3 Suo Shu, it is characterised in that: the end face of described flap (1-2) is provided with the circle with this flap (1-2) one and the distribution of concentricity axle or annular cover plate portion (1-2b)；The bottom edge of ceiling plate portion (1-2b) is suitable to cover in the upper end of described airtight and watertight padding part (1-3), forms contact and seals structure.
5. according to the core assembly (1) one of claims 1 to 3 Suo Shu, it is characterised in that: the screw thread on described taper thread (1-2a) is many screw threads of single thread or uniform pitch.
6. a stop valve, it is characterised in that: include core assembly (1)；Core assembly (1) includes valve rod (1-1), flap (1-2) and airtight and watertight padding part (1-3)；Valve rod (1-1) upper end is provided with connecting portion (1-1a), and connecting portion (1-1a) connects for fixing with corresponding handwheel or spanner；Valve rod (1-1) is provided with external thread section (1-1b), and external thread section (1-1b) is positioned at the lower section of connecting portion (1-1a)；The bottom of valve rod (1-1) is column sealed connecting portion (1-1c)；Flap (1-2) is fixedly and coaxially connected on the lower end being arranged on valve rod (1-1)；On the periphery wall of flap (1-2), distribution has taper thread (1-2a)；The external screw thread pitch of the external thread section (1-1b) on described valve rod (1-1) is equal with the pitch of the taper thread (1-2a) on described flap (1-2)；Airtight and watertight padding part (1-3) is provided with center through hole (1-3a)；Airtight and watertight padding part (1-3) is made up of plastics or soft metal；In the center through hole (1-3a) of airtight and watertight padding part (1-3), generated the female thread matched accordingly with this taper thread (1-2a) by the taper thread (1-2a) of flap (1-2) during use；
The remainder of stop valve (2) including: valve pocket (2-1), and the sidewall of this valve pocket (2-1) is arranged with inlet union (2-2) and outlet connection (2-3)；The outlet (2-4) of inlet union (2-2) extends in valve pocket (2-1) and arranges upward；Outlet (2-4) place of inlet union (2-2) is provided with fitting recess (2-4-1), and the inwall of fitting recess (2-4-1) is circumferentially with the inside groove of opening (2-4-1a) along it；
The airtight and watertight padding part (1-3) of core assembly (1) is fixedly installed in this fitting recess (2-4-1)；For the first time flap (1-2) is screwed when airtight and watertight padding part (1-3) is upper, in the center through hole (1-3a) of airtight and watertight padding part (1-3), the female thread matched accordingly is generated with this taper thread (1-2a), simultaneously because the appropriate section of the airtight and watertight padding part (1-3) that is squeezed can be extruded in the groove (2-4-1a) of fitting recess (2-4-1) by the taper thread (1-2a) of flap (1-2)；
The upper end of valve pocket (2-1) seals and is provided with valve gap (2-5)；The external thread section (1-1b) of the valve rod (1-1) of core assembly (1) female thread corresponding with the top of described valve gap (2-5) matches, and the column sealed connecting portion (1-1c) of valve rod (1-1) is coordinated with valve gap (2-5) sealing by sealing member (2-6).
7. stop valve according to claim 6, it is characterised in that: the upper end connecting portion (1-1a) of valve rod (1-1) is fixedly connected with handwheel (2-8).
8. a stop valve, it is characterised in that: described stop valve is corner stop valve；Corner stop valve (3) includes core assembly (1)；Core assembly (1) includes valve rod (1-1), flap (1-2) and airtight and watertight padding part (1-3)；Valve rod (1-1) upper end is provided with connecting portion (1-1a), and connecting portion (1-1a) connects for fixing with corresponding handwheel or spanner；Valve rod (1-1) is provided with external thread section (1-1b), and external thread section (1-1b) is positioned at the lower section of connecting portion (1-1a)；The bottom of valve rod (1-1) is column sealed connecting portion (1-1c)；Flap (1-2) is fixedly and coaxially connected on the lower end being arranged on valve rod (1-1)；On the periphery wall of flap (1-2), distribution has taper thread (1-2a)；The external screw thread pitch of the external thread section (1-1b) on described valve rod (1-1) is equal with the pitch of the taper thread (1-2a) on described flap (1-2)；Airtight and watertight padding part (1-3) is provided with center through hole (1-3a)；Airtight and watertight padding part (1-3) is made up of plastics or soft metal；In the center through hole (1-3a) of airtight and watertight padding part (1-3), generated the female thread matched accordingly with this taper thread (1-2a) by the taper thread (1-2a) of flap (1-2) during use；
The remainder of corner stop valve (3) including: the second valve pocket (3-1), and the orthogonal adjacent two side of this second valve pocket (3-1) is respectively equipped with the second inlet union (3-2) and the second outlet connection (3-3)；The valve rod (1-1) of the axis of the second inlet union (3-2) and core assembly (1) is coaxially disposed；The outlet (3-4) of the second inlet union (3-2) extends in the second valve pocket (3-1) and arranges upward；Outlet (3-4) place of the second inlet union (3-2) is provided with the second fitting recess (3-4-1), and the inwall of the second fitting recess (3-4-1) is circumferentially with, along it, the second groove (3-4-1a) that opening is inside；The airtight and watertight padding part (1-3) of core assembly (1) is fixedly installed in this second fitting recess (3-4-1)；For the first time flap (1-2) is screwed when airtight and watertight padding part (1-3) is upper, in the center through hole (1-3a) of airtight and watertight padding part (1-3), the female thread matched accordingly is generated with this taper thread (1-2a), simultaneously because the appropriate section of the airtight and watertight padding part (1-3) that is squeezed can be extruded in second groove (3-4-1a) of the second fitting recess (3-4-1) by the taper thread (1-2a) of flap (1-2)；
The upper end of the second valve pocket (3-1) seals and is provided with the second valve gap (3-5)；The external thread section (1-1b) of the valve rod (1-1) of core assembly (1) female thread corresponding with the top of described second valve gap (3-5) matches, and the column sealed connecting portion (1-1c) of valve rod (1-1) is coordinated with the second valve gap (3-5) sealing by the second sealing member (3-6).
9. stop valve according to claim 8, it is characterised in that: the upper end connecting portion (1-1a) of valve rod (1-1) is fixedly connected with the second handwheel (3-8).
10. a stop valve, it is characterised in that: described stop valve is emergency cut-off stop valve；Emergency cut-off stop valve (4) includes core assembly (1) and emergency shutoff device (4a)；Core assembly (1) includes valve rod (1-1), flap (1-2) and airtight and watertight padding part (1-3)；Valve rod (1-1) upper end is provided with connecting portion (1-1a), and connecting portion (1-1a) connects for fixing with corresponding handwheel or spanner；Valve rod (1-1) is provided with external thread section (1-1b), and external thread section (1-1b) is positioned at the lower section of connecting portion (1-1a)；The bottom of valve rod (1-1) is column sealed connecting portion (1-1c)；Flap (1-2) is fixedly and coaxially connected on the lower end being arranged on valve rod (1-1)；On the periphery wall of flap (1-2), distribution has taper thread (1-2a)；The external screw thread pitch of the external thread section (1-1b) on described valve rod (1-1) is equal with the pitch of the taper thread (1-2a) on described flap (1-2)；Airtight and watertight padding part (1-3) is provided with center through hole (1-3a)；Airtight and watertight padding part (1-3) is made up of plastics or soft metal；In the center through hole (1-3a) of airtight and watertight padding part (1-3), generated the female thread matched accordingly with this taper thread (1-2a) by the taper thread (1-2a) of flap (1-2) during use；
The remainder of emergency cut-off stop valve (4) including: the 3rd valve pocket (4-1), and the orthogonal adjacent two side of the 3rd valve pocket (4-1) is respectively equipped with triple feed inlet joint (4-2) and the 3rd outlet connection (4-3)；3rd outlet (4-4) of triple feed inlet joint (4-2) extends in the 3rd valve pocket (4-1) and arranges upward；The 3rd outlet (4-4) place of triple feed inlet joint (4-2) is provided with the 3rd fitting recess (4-4-1), and the inwall of the 3rd fitting recess (4-4-1) is circumferentially with, along it, the 3rd groove (4-4-1a) that opening is inside；The airtight and watertight padding part (1-3) of core assembly (1) is fixedly installed in the 3rd fitting recess (4-4-1)；For the first time flap (1-2) is screwed when airtight and watertight padding part (1-3) is upper, in the center through hole (1-3a) of airtight and watertight padding part (1-3), the female thread matched accordingly is generated with this taper thread (1-2a), simultaneously because the appropriate section of the airtight and watertight padding part (1-3) that is squeezed can be extruded in the 3rd groove (4-4-1a) of the 3rd fitting recess (4-4-1) by the taper thread (1-2a) of flap (1-2)；
The upper end of the 3rd valve pocket (4-1) seals and is provided with the 3rd valve gap (4-5)；The external thread section (1-1b) of the valve rod (1-1) of core assembly (1) female thread corresponding with the top of described 3rd valve gap (4-5) matches, and the column sealed connecting portion (1-1c) of valve rod (1-1) is coordinated with the 3rd valve gap (4-5) sealing by the 3rd sealing member (4-6)；
Emergency shutoff device (4a) is fixedly installed on triple feed inlet joint (4-2), in emergency circumstances shutting off the passage of the 3rd valve pocket (4-1).
11. stop valve according to claim 10, it is characterised in that: the upper end connecting portion (1-1a) of valve rod (1-1) is fixedly connected with the 3rd handwheel (4-8).
12. stop valve according to claim 10, it is characterized in that: triple feed inlet joint (4-2) is provided with spring shaft fixed pipe support (4-2-1), spring shaft fixed pipe support (4-2-1) middle part is cannula portion (4-2-1a), and cannula portion (4-2-1a) is provided with through its upper and lower through hole；Cannula portion (4-2-1a) is fixedly installed in triple feed inlet joint (4-2) by the four articles of dowel verticals arranged along its circumference angle at equal intervals；The lower surface of triple feed inlet joint (4-2) is provided with the seal projection portion (4-2-2) of annular；
Emergency shutoff device (4a) includes valve seat (4a-1)；Valve seat (4a-1) seals and is fixedly installed on triple feed inlet joint (4-2) bottom；Valve seat (4a-1) is in its circumferential side wall and is provided with through its inside and outside import (4a-1-1) on base plate；The fixing pipe (4a-2) of spring shaft is arranged on spring shaft fixed pipe support (4-2-1), and spring shaft (4a-3) is slidably arranged in the fixing pipe (4a-2) of spring shaft；Spring shaft (4a-3) lower end is provided with sealing gasket friction top (4a-4)；Sealing gasket friction top (4a-4) is fixing with gasket base (4a-5) to be connected, and sealing gasket (4a-6) compacted lid (4a-4) and gasket base (4a-5) are fixedly clamped, during use, sealing gasket (4a-6) is formed with the seal projection portion (4-2-2) of the lower surface of triple feed inlet joint (4-2) and contacts sealing structure；Compression spring (4a-7) it is provided with between gasket base (4a-5) and valve seat (4a-1) base plate；The upper rotary seal of triple feed inlet joint (4-2) is provided with shifting block axle (4a-8)；The one end of the shifting block axle (4a-8) being arranged in triple feed inlet joint (4-2) is provided with shifting block (4a-9)；Shifting block (4a-9) is positioned on spring shaft (4a-3) upper end, under stop valve normal operating conditions, spring shaft (4a-3) is pushed up downwards by shifting block (4a-9), make seal projection portion (4-2-2) disengaging of sealing gasket (4a-6) and the lower surface of triple feed inlet joint (4-2), form corresponding passage；Power set are fixedly installed on the 3rd valve pocket (4-1) outward；Power set drive the one end being positioned at triple feed inlet joint (4-2) shifting block axle (4a-8) outward to make shifting block axle (4a-8) rotate, thus driving shifting block (4a-9) to rotate.
13. according to the stop valve one of claim 6 to 12 Suo Shu, it is characterised in that: the thickness of the airtight and watertight padding part (1-3) of described core assembly (1) is not less than the axial height of described taper thread (1-2a).
14. according to the stop valve one of claim 6 to 12 Suo Shu, it is characterised in that: the depth of thread of the taper thread (1-2a) of described core assembly (1) from bottom to top gradually becomes shallower as.
15. according to the stop valve one of claim 6 to 12 Suo Shu, it is characterised in that: the end face of the flap (1-2) of described core assembly (1) is provided with the circle with this flap (1-2) one and the distribution of concentricity axle or annular cover plate portion (1-2b)；The bottom edge of ceiling plate portion (1-2b) is suitable to cover in the upper end of described airtight and watertight padding part (1-3), forms contact and seals structure.
16. according to the stop valve one of claim 6 to 12 Suo Shu, it is characterised in that: the many screw threads that screw thread is single thread or uniform pitch on the taper thread (1-2a) of described core assembly (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197045.1A CN105736713A (en) | 2016-03-31 | 2016-03-31 | Valve element assembly and stop valve |
| PCT/CN2017/078777 WO2017167223A1 (en) | 2016-03-31 | 2017-03-30 | Spool assembly and shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197045.1A CN105736713A (en) | 2016-03-31 | 2016-03-31 | Valve element assembly and stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736713A true CN105736713A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610197045.1A Pending CN105736713A (en) | 2016-03-31 | 2016-03-31 | Valve element assembly and stop valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105736713A (en) |
| WO (1) | WO2017167223A1 (en) |
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| WO2017167223A1 (en) * | 2016-03-31 | 2017-10-05 | 邹岳明 | Spool assembly and shut-off valve |
| CN111577950A (en) * | 2020-03-31 | 2020-08-25 | 浙江杭惠阀门有限公司 | Pressure reducing valve |
| CN113883541A (en) * | 2021-10-12 | 2022-01-04 | 龙净科杰环保技术（上海）有限公司 | Hot dry air dehumidification process for waste heat boiler of gas turbine |
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| Publication number | Publication date |
|---|---|
| WO2017167223A1 (en) | 2017-10-05 |
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