CN110285227A - The assembly method of valve seat and valve body, the assembly method of smaller diameter valve and valve - Google Patents
The assembly method of valve seat and valve body, the assembly method of smaller diameter valve and valve Download PDFInfo
- Publication number
- CN110285227A CN110285227A CN201910538521.5A CN201910538521A CN110285227A CN 110285227 A CN110285227 A CN 110285227A CN 201910538521 A CN201910538521 A CN 201910538521A CN 110285227 A CN110285227 A CN 110285227A
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- Prior art keywords
- valve
- valve body
- valve seat
- assembly method
- seat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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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
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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
- F16K3/0209—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 the valve having a particular passage, e.g. provided with a filter, throttle or safety device
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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
- F16K3/0227—Packings
- F16K3/0236—Packings the packing being of a non-resilient material, e.g. ceramic, metal
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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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Lift Valve (AREA)
Abstract
The assembly method, the assembly method of smaller diameter valve and valve, assembly method that the present invention provides a kind of valve seat and valve body include the following steps: S1: unremovably sealing is fixed with valve seat on the end face of the first end of two interconnecting pieces；S2: by the first end of two interconnecting pieces, the inlet end and an outlet end through valve body is protruded into the inner cavity of valve body respectively, and two valve seats is made to protrude into the lumen of valve body；S3: the sealing of each interconnecting piece is fixed on corresponding valve body.Smaller diameter valve is manufactured according to assembly method.This assembly method, simple process, the integral structure of formation will not cause to leak when valve is by temperature alternating due to valve seat is deformed and loosened；The deflection that the valve seat of integral structure is influenced by high temperature simultaneously makes valve seat also have good leakproofness at high temperature much smaller than the deflection of the thin valve seat of separate type in the prior art；In the external process valve seat of valve body, the flatness and roughness of valve seat can be effectively ensured, make valve seat that there is good leakproofness.
Description
Technical field
The present invention relates to valve technology fields, and in particular to the assembly method of valve seat and valve body a kind of, smaller diameter valve
Assembly method and valve.
Background technique
Smaller diameter valve valve seat in the prior art and valve body are mostly separate structure, and interconnecting piece and valve body are mostly one
Body formula structure.For example, as shown in Figure 1, valve body 101 is structure as a whole with interconnecting piece 102, valve body in small diameter gate valve
Valve seat mounting hole is offered on inner wall, valve body has the inlet and liquid outlet being connected to inner cavity, and on the lumen of valve body
Portion is equipped with construction opening, and construction opening is located in the liquid inlet between liquid outlet, and valve seat 2 is installed from the opening of valve body insertion valve seat
Hole, then load onto valve plate from the opening, then using end in the frock tool of platform taper from the inlet of valve body side or out liquid
Mouth protrudes into valve body, and frock tool squeezes valve seat, realizes valve seat distending and is fixed on valve body with the interference fit of valve seat mounting hole
On.
But when gate valve is applied in worst hot case, gate valve will appear biggish temperature in use state and non-working condition
Alternation is spent, valve seat is will lead to due to expanding with heat and contract with cold and expands or contraction distortion, so that existing between valve seat and valve seat mounting hole
There is loose phenomenon in gap, so that valve seat be caused to be difficult to seal between valve body, the leakproofness of valve seat is poor, and there are showing for leakage
As.
Meanwhile for small diameter gate valve, sometimes since the aperture size of inlet and liquid outlet is too small, tooling work
Tool can not be extend into body cavity from the inlet or liquid outlet of valve body side squeezes valve seat, realizes packing；It is swollen to realize
Ring manipulation needs first to be made greatly the bore dia of valve body side, protrudes into and completed after packing operates again by valve body after frock tool
The Kong Gai little of side, complex process；Since small diameter gate valve inlet and liquid outlet aperture size are small, the inclination of cutter and knife handle
Diameter be affected, cutter protrudes on the inner wall of valve body the flatness for processing sealing surface and roughness is difficult to ensure, hold
It is also easy to produce leakage.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome in the prior art smaller diameter valve under worst hot case point
Body formula valve seat is easy loosening and the assembly method complexity between valve seat and valve body and accuracy is low, causes the leakproofness of valve seat
Difference be easy to cause the defect of valve leaks.
For this purpose, the present invention provides the assembly method of a kind of valve seat and valve body, wherein the valve body include valve body and with institute
Two interconnecting pieces that valve body is in separation are stated, two interconnecting pieces are respectively equipped with feed pathway and liquid outlet channel；The dress
Method of completing the square includes the following steps:
S1: unremovably sealing is fixed with valve seat on the end face of the first end of two interconnecting pieces respectively；
S2: the inlet end and an outlet end by the first end of two interconnecting pieces respectively through the valve body protrudes into valve body
Inner cavity in, so that two valve seats is protruded into the lumen of valve body；
S3: each interconnecting piece sealing is fixed on corresponding valve body.
Optionally, the assembly method of above-mentioned valve seat and valve body, in the S1 step, the interconnecting piece and the valve seat
It is made of identical material, the valve seat is integrally formed on the end face of the first end；Or
In the S1 is rapid, pile-up welding hard alloy is on the end face of the first end to form the valve seat.
Optionally, the assembly method of above-mentioned valve seat and valve body can not by each interconnecting piece in the S3 step
Releasably sealing is fixed on valve body.
Optionally, the assembly method of above-mentioned valve seat and valve body, in the S3 step, with described on the interconnecting piece
Outside wall surface weld all around in one week of the opposite second end in one end is on the input end of corresponding valve body or outlet end.
Optionally, the assembly method of above-mentioned valve seat and valve body, opposite with the first end second on the interconnecting piece
End is radially equipped with the first step of protrusion；
In the S2 step, the first end of the interconnecting piece is protruded into the inner cavity of valve body, makes the first of second end
Step is located at the outside of corresponding input end or outlet end, and opposite with the end face of corresponding input end or outlet end
And spacing is reserved therebetween, to form sunk area；
In the S3 step, at the sunk area, interconnecting piece sealing is fixed on corresponding described
On valve body.
Optionally, the assembly method of above-mentioned valve seat and valve body, the periphery of the interconnecting piece are equipped with the second of radial protrusion
Step, the second step are located at the inside of first step, and the input end of valve body and the inner wall of outlet end are equipped with and second
The corresponding step of rank；
In the S2 step, the first end of the interconnecting piece is protruded into the inner cavity of valve body, second step is abutted
On the step surface of the step of corresponding input end or outlet end.
The present invention provides a kind of assembly method of smaller diameter valve, including described in any item small-bore valve seats among the above
With the assembly method of valve body.
The present invention provides a kind of smaller diameter valve manufactured according to the assembly method of above-mentioned smaller diameter valve.
Optionally, above-mentioned smaller diameter valve further includes the valve that flap and the drive flap do lifting or rotary motion
One end that the flap is fixed on bar, the flap and the valve rod is protruded into the lumen of the valve body.
Optionally, above-mentioned smaller diameter valve forms sealing pair in the outside wall surface of built-up welding and the valve seat on the flap
Hard alloy；And/or
One end of feed pathway on the flap close to upstream is equipped with the pressure release passage for being connected to the upstream with lumen.
Optionally, above-mentioned smaller diameter valve further includes the valve being fixed on the upper opening of the lumen of the valve body
It covers, is protruded into the lumen for fixing one end of flap through the valve deck on the valve rod；
The airtight and watertight padding component being located between the valve rod and valve deck；It is set in outside the valve rod and is pressed on the sealing
The pressing plate being connect on filler assembly and by fastener with the valve deck；And it covers outside the fastener and is clamped in the pressure
The first elastic component between plate and the locking member for being matched with the fastener, first elastic component apply direction to the pressing plate
The pretightning force in airtight and watertight padding component direction.
Optionally, above-mentioned smaller diameter valve further includes the valve stem nut cooperated in the stem outer circumference, the valve rod spiral shell
Mother is driven the driving of mechanism and the valve rod is driven to do the lifting or rotary motion；It is set in the outside wall surface of the valve stem nut
There is the first flange of radially protruding；And it is set in outside the valve stem nut and is respectively distributed to the axis of first flange two sides
It holds, the bearing is connected on the other component adjacent with the bearing far from the other end of first flange.
Optionally, above-mentioned smaller diameter valve further includes the second elastic component；Second elastic component is set in the valve rod
Top on nut and positioned at all bearings, second elastic component apply to the valve stem nut towards the valve seat side
To pretightning force.
Technical solution of the present invention has the advantages that
1. the assembly method of valve seat provided by the invention and valve body, wherein the valve body include valve body and with the valve sheet
Body is in two interconnecting pieces of separation, and two interconnecting pieces are respectively equipped with feed pathway and liquid outlet channel；The assembly method
Include the following steps: S1: unremovably sealing is fixed with valve seat on the end face of the first end of two interconnecting pieces respectively；
S2: the inlet end and an outlet end by the first end of two interconnecting pieces respectively through the valve body protrudes into the inner cavity of valve body
In, so that two valve seats is protruded into the lumen of valve body；S3: each interconnecting piece sealing is fixed on corresponding described
On valve body.
This assembly method, since smaller diameter valve aperture size is small, tool bad protrude into processes valve seat in valve body, first
Integrated valve seat is processed on the end face of the first end of interconnecting piece, then the first end of interconnecting piece is protruded into the inner cavity of valve body,
Finally interconnecting piece is sealed on fixed valve body, simple process, the integrated valve seat of formation is changed in valve by high and low temperature alternative
When, it will not be deformed because of valve seat and loosen and cause to leak；Integrated valve seat construction, which is equivalent to, simultaneously has thickeied valve seat, and valve seat is by high temperature
The deflection of influence makes valve seat at high temperature also with good close much smaller than the deflection of the thin valve seat of separate type in the prior art
Feng Xing；In the external process valve seat of valve body, the tool for processing valve seat is not limited by valve apertures, easy to process and processing essence
Exactness is high, and the flatness and roughness of valve seat is effectively ensured, and so that valve seat is had good leakproofness, and then reduce valve leak
Probability extends the service life of valve.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the cooperation schematic diagram of valve seat and valve body in the prior art of the invention；
Fig. 2 is the schematic diagram of smaller diameter valve provided in the embodiment of the present invention 3；
Fig. 3 is the partial enlarged view of interconnecting piece and valve body part in Fig. 2；
Fig. 4 is the partial enlarged view of valve body and valve cover portion in Fig. 2；
Fig. 5 is the partial enlarged view of filler and clamp portion in Fig. 2；
Fig. 6 is valve stem nut and the partial enlarged view of handwheel part in Fig. 2；
Description of symbols:
101- valve body；102- interconnecting piece；1021- first end；1022- first step；1023- second step；2- valve seat；
3- flap；31- pressure release passage；4- valve rod；The first valve deck of 51-；The second valve deck of 52-；6- filler assembly；7- pressing plate；8- pressing sleeve；9-
Valve stem nut；The first flange of 91-；The first elastic component of 10-；11- bearing；The second elastic component of 12-；13- handwheel.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides the assembly methods of a kind of valve seat and valve body, and as shown in Figures 2 and 3, wherein valve body includes valve sheet
Body 101 and two interconnecting pieces 102 separating are in the valve body, two interconnecting pieces 102 are respectively equipped with feed pathway and go out
Liquid channel；Assembly method includes the following steps: S1: respectively on the end face of the first end 1021 of two interconnecting pieces 102 not
Removably sealing is fixed with valve seat 2；S2: by the first end 1021 of two interconnecting pieces 102 respectively through the valve body 101
Inlet end and an outlet end protrude into the inner cavity of valve body 101, so that two valve seats 2 is protruded into the lumen of valve body 101；S3:
Each sealing of interconnecting piece 102 is fixed on corresponding valve body 101.
This assembly method, since smaller diameter valve aperture size is small, bad protrude into valve body 101 of tool processes valve seat
2, first process integrated valve seat 2 on the end face of the first end 1021 of interconnecting piece 102, then by the first end of interconnecting piece 102
1021 protrude into the inner cavity of valve body 101, finally interconnecting piece 102 are fixed on valve body 101, simple process, valve by
To when high and low temperature alternative variation, it will not be deformed because of valve seat 2 and loosen and cause to leak；Valve seat 2 and the formation of interconnecting piece 102 one are whole
Body, integrated valve seat construction, which is equivalent to, has thickeied valve seat 2, and the deflection that valve seat 2 is influenced by high temperature is much smaller than valve in the prior art
The deflection of seat 2 makes valve seat 2 also have good leakproofness at high temperature；In the external process valve seat 2 of valve body 101, processing
The tool of valve seat 2 is not limited by valve apertures, and easy to process and machining accuracy is high, and the flatness of valve seat 2 and thick is effectively ensured
Rugosity, cooperating valve seat 2 and flap 3 has good leakproofness, and then reduces the probability of valve leak, extends the use of valve
Service life.
Preferably, in S1 step, interconnecting piece 102 and valve seat 2 are made of identical material, directly in interconnecting piece 102 the
Go out valve seat 2 using tool sharpening on the end face of one end 1021, make 2 surface of valve seat that there is good flatness and roughness, guarantees
Valve seat 2 has good leakproofness.Or in S1 step, pile-up welding hard alloy is on the end face of first end 1021 to form valve
Seat 2, makes the more antifriction of valve seat 2.Alternatively, can be well prepared in advance with valve seat, valve seat be welded on the using welding procedure later
On the end face of one end, so that valve seat is molded on the end face of first end, at this point, valve body and valve seat can use the material of identical material
Matter is made, and can also be made of the material of different materials.
That is: the valve seat " unremovably sealing is fixed " in the present embodiment can be on the end face of first end
The integrated molding of identical material；The valve seat and valve body for being also possible to different materials or identical material are respectively first prepared, and again will later
Valve seat is unremovably sealed and is fixed on the end face of first end, for example, weld or other one sealing fixed forms.
In the S3 step, second end opposite with first end 1021 on interconnecting piece 102 is radially equipped with the First of protrusion
Rank 1022；In S2 step, the first end 1021 of interconnecting piece 102 is protruded into the inner cavity of valve body 101, the first of second end is made
Step 1022 is located at the outside of corresponding input end or outlet end, and the end face with corresponding input end or outlet end
Relatively and therebetween spacing is reserved, to form sunk area, for example, sunk area is V-type.
The periphery of interconnecting piece 102 is equipped with the second step 1023 of radial protrusion, and second step 1023 is located at first step
1022 inside, the input end of valve body 101 and the inner wall of outlet end are equipped with step corresponding with second step 1023；It is walked in S2
In rapid, the first end 1021 of interconnecting piece 102 is protruded into the inner cavity of valve body 101, is connected to the second annular protrusion 1023 respectively
On the step surface of self-corresponding input end or the step of outlet end, realize that interconnecting piece 102 and 101 valve of valve body are accurately positioned.
In the S3 step, at sunk area, using welding machine by 1022 weld all around of first step of interconnecting piece 102 respectively right
In the outside wall surface of the input end or outlet end answered, welding material fills full entire sunk area, and interconnecting piece 102 is unremovably close
Sealing is scheduled on valve body 101, is fixed so that interconnecting piece 102 and valve body 101 form sealing, sealed reliable, fixation, valve
Intracorporal medium will not ooze out from sunk area.
Embodiment 2
The present embodiment provides small-bore valve seat and valve bodies in a kind of assembly method of smaller diameter valve, including embodiment 1
Assembly method.The assembly method of this smaller diameter valve, assembly technology is simple, and valve seat 2 is changed in valve by high and low temperature alternative
When, it will not be deformed because of valve seat 2 and loosen and cause to leak；Valve seat 2 and interconnecting piece 102 form an entirety, the valve seat 2 of integral type
Structure, which is equivalent to, has thickeied valve seat 2, and the deflection that valve seat 2 is influenced by high temperature makes much smaller than the deflection of valve seat 2 in the prior art
Valve seat 2 can also seal at high temperature with flap 3 to be cooperated, and has good leakproofness；In the external process valve seat 2 of valve body 101,
The tool of processing valve seat 2 is not limited by valve apertures, easy to process, and the flatness and roughness of valve seat 2 is effectively ensured, makes valve
Seat 2 has good leakproofness with the cooperation of flap 3, so that valve be made to have good leakproofness, is not easy to reveal.
Embodiment 3
The present embodiment provides a kind of smaller diameter valves according to the assembly method manufacture in embodiment 2, such as Fig. 2 to Fig. 6 institute
Show, smaller diameter valve further includes the valve rod 4 that flap 3 and drive flap 3 do lifting or rotary motion, is fixed on flap 3 and valve rod 4
One end of flap 3 is protruded into the inner cavity of valve body 101.
Preferably, heap is welded with the hard alloy with formation sealing pair in the outside wall surface of valve seat 2 on flap 3, improves flap 3
Wear-resisting property；Most preferably, it is equipped on flap 3 close to one end of the feed pathway of upstream and leads to the pressure release that upstream is connected to lumen
Road 31.Under worst hot case, middle cavity pressure is sharply increased as temperature increases, and pressure release passage 31 is connected to upstream and lumen, can
Make lumen pressure releasing to upstream, prevents hypertonia and lead to the material failure of each component of valve, deform, crack.
As shown in Figure 4 and Figure 5, smaller diameter valve further includes valve deck, filler assembly 6, pressing plate 7 and the first elastic component 10.Its
In, for example, valve deck includes the first valve deck 51 and the second valve deck 52, used between the first valve deck of common valve 51 and valve body 101
It is bolted, on the upper opening of lumen of 51 weld all around of the first valve deck of valve provided in this embodiment in valve body 101, the second valve
52 weld all around of lid is on the upper opening of the first valve deck 51；Under worst hot case, if the alternation of temperature very may be used using being bolted
Bolt looseness can be will lead to, so that bolt pretightening be made to reduce, cause to leak.Weldering between first valve deck 51 and valve body 101
Weld seam between seam, the second valve deck 52 and the first valve deck 51 can effectively prevent the dielectric leakage of valve inner to external environment
In, the sealed connection between the first valve deck 51 and valve body 101, the second valve deck 52 and the first valve deck 51 is relatively reliable.On valve rod 4
One end for fixing flap 3 is protruded into the inner cavity of valve body through valve deck.
As shown in figure 4, smaller diameter valve is using increasing valve deck, so that filler mounting hole is far from valve body, under worst hot case,
It is gradually decreased upwards from axis where temperature from valve liquid inlet and outlet in valve body, increasing valve deck makes filler under worst hot case
Temperature be unlikely to too high, avoid temperature change dramatically and cause filler contraction or expansion amplitude excessive, while avoiding temperature mistake
Height causes filler ablation amount excessive, influences its leakproofness.
As shown in figure 5, airtight and watertight padding component 6 is located between valve rod 4 and the second valve deck 52, airtight and watertight padding component 6 guarantees valve
There is good sealing performance between bar 4 and the second valve deck 52；Pressing plate 7 is set in outside valve rod 4 and is pressed on airtight and watertight padding component 6
It goes up and passes through fastener and connect with the second valve deck 52；For example, pressing sleeve 8 is additionally provided between pressing plate 7 and airtight and watertight padding component 6, pressing sleeve 8
It is pressed on airtight and watertight padding component 6, pressing plate 7 is pressed on pressing sleeve 8；Fastener is the combination of screw bolt and nut.First elastic component
10 sets outside bolt and are being clamped between pressing plate 7 and nut, for example, the first elastic component 10 is disc spring, the first elastic component 10 is right
Pressing plate 7 applies the pretightning force towards 6 direction of airtight and watertight padding component.
Under worst hot case, filler temperature is high, and filler is radially expanded and extrusion packing expires valve rod 4 and the second valve deck 52
Between gap, play good sealing effect；When valve body temperature reduces, filler temperature also reduces and radial receipts occurs
Contracting, along with caused filler ablation under high temperature, nut torque is reduced, and the extruding force applied to filler is inadequate, and filler is not tight
Close to fill the gap expired between valve rod 4 and the second valve deck 52 and cause to reveal, the first elastomeric element applies downwards to pressing plate 7 at this time
Active force, filler is pressed into wide distending, to compensate the pressing force lost on filler, so that filler is still played good sealing and imitates
Fruit.
Optionally, smaller diameter valve further includes valve stem nut 9 and bearing 11.Valve stem nut 9 cooperation 4 periphery of valve rod and by
The driving of driving mechanism and drive the valve rod 4 to do the lifting or rotary motion, for example, at the top of valve rod 4 be equipped with handwheel 13, lead to
Cross the movement of 13 driving stem 4 of rotation handwheel.The outside wall surface of valve stem nut 9 is equipped with the first flange 91 of radially protruding；Valve rod spiral shell
The two sides up and down of female first flange 91 are arranged with bearing 11 respectively, and bearing 11 is connected to and is somebody's turn to do far from the other end of the first flange 91
On the adjacent other component of bearing 11.The setting of bearing 11 can reduce frictional force in rotary valve rod nut 9 downward or upward,
The largely operating force during reduction controlled valve on valve stem nut 9.
Most preferably, smaller diameter valve further includes the second elastic component 12；Second elastic component 12 is set on 4 nut of valve rod and position
In the top of all bearings 11, the second elastic component 12 applies the pretightning force towards 2 direction of valve seat to 4 nut of valve rod.For example, second
Elastic component 12 is disc spring, under worst hot case, when smaller diameter valve is gate valve, when valve seat 2 is influenced to cause valve seat 2 or so by high temperature
Gap not close or even that generation is certain, the second elastic component 12 may be abutted when spacing becomes larger, between flashboard and left and right valve seat 2
Downward thrust can be applied to 4 nut of valve rod, auxiliary valve rod 4 pushes down on flashboard, flashboard is made closely to be connected to the valve seat 2 of left and right
On, play certain compensating action；The setting of the second elastic component can play the role of auxiliary seal simultaneously, reduce and close valve
Required operating force.
As first alternative embodiments of embodiment 3, the first elastic component 10 and the second elastic component 12 can also be
Spring, the first elastic component 10 and the second elastic component 12 are able to apply downward active force i.e. to pressing plate 7 and valve stem nut 9
It can.
Above-mentioned gate valve may be replaced with other smaller diameter valves, such as ball valve, and corresponding valve rod makes rotating motion；
For another example shut-off valve, corresponding valve rod move up and down.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (13)
1. the assembly method of a kind of valve seat and valve body, which is characterized in that wherein the valve body include valve body (101) and with it is described
Valve body is in two interconnecting pieces (102) of separation, and two interconnecting pieces (102) are respectively equipped with feed pathway and liquid is logical out
Road；The assembly method includes the following steps:
S1: unremovably sealing is fixed with valve on the end face of the first end (1021) of two interconnecting pieces (102) respectively
Seat (2)；
S2: input end and outlet by the first end (1021) of two interconnecting pieces (102) respectively through the valve body (101)
End is protruded into the inner cavity of valve body (101)；
S3: each interconnecting piece (102) sealing is fixed on corresponding valve body (101).
2. the assembly method of valve seat according to claim 1 and valve body, which is characterized in that described in the S1 step
Interconnecting piece (102) and the valve seat (2) are made of identical material, and the valve seat (2) is integrally formed in the first end
(1021) on end face；Or
In the S1 step, pile-up welding hard alloy is on the end face of the first end (1021) to form the valve seat (2).
3. the assembly method of valve seat according to claim 1 or 2 and valve body, which is characterized in that
In the S3 step, each interconnecting piece (102) is unremovably sealed and is fixed on valve body (1).
4. the assembly method of valve seat according to claim 3 and valve body, which is characterized in that described in the S3 step
Outside wall surface weld all around in one week of the second end opposite with the first end (1021) is in corresponding valve on interconnecting piece (102)
On the input end of ontology (101) or outlet end.
5. the assembly method of valve seat described in any one of -4 and valve body according to claim 1, which is characterized in that the interconnecting piece
(102) second end opposite with the first end (1021) is radially equipped with the first step (1022) of protrusion on；
In the S2 step, the first end (1021) of the interconnecting piece (102) is protruded into the inner cavity of valve body (101), is made
The first step (1022) of second end is located at the outside of corresponding input end or outlet end, and with corresponding input end
Or spacing is reserved in the end face of outlet end relatively and therebetween, to form sunk area；
In the S3 step, at the sunk area, the interconnecting piece (102) sealing is fixed on corresponding described
On valve body (101).
6. the assembly method of valve seat described in claim 5 and valve body, which is characterized in that the periphery of the interconnecting piece (102) is set
There is the second step (1023) of radial protrusion, the second step (1023) is located at the inside of first step (1022), valve body
(101) inner wall of input end and outlet end is equipped with step corresponding with second step (1023)；
In the S2 step, the first end (1021) of the interconnecting piece (102) is protruded into the inner cavity of valve body (101), is made
Second step (1023) is connected on the step surface of corresponding input end or outlet end step.
7. a kind of assembly method of smaller diameter valve, which is characterized in that including valve seat of any of claims 1-6 with
The assembly method of valve body.
8. a kind of valve of assembly method manufacture according to claim 7.
9. valve according to claim 8, which is characterized in that further include that flap (3) and the drive flap (3) go up and down
Or the valve rod (4) of rotary motion, it is protruded into for fixing one end of the flap (3) on the flap (3) and the valve rod (4)
In the inner cavity of the valve body (101).
10. valve according to claim 9, which is characterized in that heap is welded with and the valve seat (2) on the flap (3)
The hard alloy of sealing pair is formed in outside wall surface；And/or
It is equipped on the flap (3) close to one end of the feed pathway of upstream and lets out the upstream with what the lumen of valve body was connected to
Pressure passageway (31).
11. valve according to claim 9 or 10, which is characterized in that further include being fixed in the valve body (101)
Valve deck on the upper opening of chamber protrudes into the valve sheet through the valve deck for fixing one end of flap (3) on the valve rod (4)
In the inner cavity of body；
The airtight and watertight padding component (6) being located between the valve rod (4) and valve deck；It is set in the valve rod (4) outside and is pressed on institute
The pressing plate (7) stated on airtight and watertight padding component (6) and connect by fastener with the valve deck；And cover outside the fastener and by
The first elastic component (10) being clamped between the pressing plate (7) and the locking member for being matched with the fastener, first elasticity
Part (10) applies the pretightning force towards airtight and watertight padding component (6) direction to the pressing plate (7).
12. smaller diameter valve according to claim 9 or 10, which is characterized in that further include cooperation the valve rod (4) outside
Week valve stem nut (9), the valve stem nut (9) be driven the driving of mechanism and drive the valve rod (4) do it is described lifting or
Rotary motion；The outside wall surface of the valve stem nut (9) is equipped with the first flange (91) of radially protruding；And it is set in the valve
Stem nut is outer and is respectively distributed to the bearing (11) of the first flange (91) two sides, and the bearing (11) is convex far from described first
The other end of edge (91) is connected on the other component adjacent with the bearing (11).
13. smaller diameter valve according to claim 12, which is characterized in that further include the second elastic component (12)；Described
Two elastic components (12) are set in the top on the valve stem nut (9) and being located at all bearings (11), second elasticity
Part (12) applies the pretightning force towards the valve seat (2) direction to the valve stem nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538521.5A CN110285227A (en) | 2019-06-20 | 2019-06-20 | The assembly method of valve seat and valve body, the assembly method of smaller diameter valve and valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538521.5A CN110285227A (en) | 2019-06-20 | 2019-06-20 | The assembly method of valve seat and valve body, the assembly method of smaller diameter valve and valve |
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| CN110285227A true CN110285227A (en) | 2019-09-27 |
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|---|---|---|---|
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| CN (1) | CN110285227A (en) |
Cited By (3)
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| CN111594627A (en) * | 2020-05-06 | 2020-08-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hot valve and manufacturing method thereof |
| CN112475654A (en) * | 2020-11-25 | 2021-03-12 | 良正阀门有限公司 | Assembly welding process and assembly welding tool for all-welded gate valve |
| CN114029644A (en) * | 2021-11-12 | 2022-02-11 | 安徽省屯溪高压阀门有限公司 | Welding method for small-caliber high-pressure gate valve |
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| CN114029644A (en) * | 2021-11-12 | 2022-02-11 | 安徽省屯溪高压阀门有限公司 | Welding method for small-caliber high-pressure gate valve |
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