CN207034350U - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN207034350U CN207034350U CN201720568863.8U CN201720568863U CN207034350U CN 207034350 U CN207034350 U CN 207034350U CN 201720568863 U CN201720568863 U CN 201720568863U CN 207034350 U CN207034350 U CN 207034350U
- Authority
- CN
- China
- Prior art keywords
- valve
- segmental arc
- sliding cavity
- auxiliary
- valve core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of stop valve, including valve body, inlet and liquid outlet are provided with valve body, control chamber is provided between inlet and liquid outlet, valve body upper end is provided with bonnet, valve seat and main valve plug and auxiliary valve core with valve seat fitted seal are provided with control chamber, main valve plug upper end is provided with the valve rod of driving main valve plug motion, valve rod upper end is stretched out bonnet and is threadedly coupled with bonnet, sliding cavity is provided with main valve plug, auxiliary valve core is slidably arranged in sliding cavity, the elastic component that driving auxiliary valve core slides to valve seat direction is provided with sliding cavity, stopper slot is provided with auxiliary valve core, spacer pin is inserted with sliding cavity, spacer pin end is in stopper slot, the intercommunicating pore of connection connection inlet and sliding cavity is provided with auxiliary valve core.The stop valve stop valve, can preferably avoid the pressure oscillation of inlet causes auxiliary valve core poorly sealed.
Description
Technical field
Valve is the utility model is related to, more particularly to a kind of stop valve.
Background technology
Stop valve is also known as pipe valve valve, belongs to forced seal formula valve, and the requirement for sealing effectiveness is higher.
At present, Publication No. CN201568591U Chinese patent discloses a kind of composite stop valve of double spool, including
Valve body, valve seat, main valve plug and auxiliary valve core are provided with valve body, auxiliary valve core is arranged on inside main valve plug, by fixed finger setting,
The inner side and outer side of the trapezoidal convex shoulder of valve seat respectively sets a sealing surface, and the sealing surface of itself and main valve plug is arranged on its underpart
The seal line of two edges and corners of square groove is in contact, and sealing surface, the sealing with auxiliary valve core downside are set in the inner side of valve seat
Face is first contacted, and disc spring is provided with the plenum chamber that auxiliary valve core and main valve plug are formed.Although the composite stop valve of the double spool has
Preferable sealing property, but auxiliary valve core by disc spring pressing on valve seat, when in inlet fluid pressure occur it is larger
During fluctuation, disc spring can be caused to be held by the pressure top in inlet, auxiliary valve core is not had sealing function, while can also influence disc spring
Life-span.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of stop valve, can preferably keep away
Exempting from the pressure oscillation of inlet causes auxiliary valve core poorly sealed.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of stop valve, including
Valve body, inlet and liquid outlet are provided with valve body, control chamber is provided between inlet and liquid outlet, valve body upper end is provided with
Bonnet, valve seat is provided with control chamber and main valve plug and auxiliary valve core with valve seat fitted seal, main valve plug upper end are provided with driving
The valve rod of main valve plug motion, valve rod upper end are stretched out bonnet and are threadedly coupled with bonnet, and sliding cavity, auxiliary valve core are provided with main valve plug
It is slidably arranged in sliding cavity, the elastic component that driving auxiliary valve core slides to valve seat direction is provided with sliding cavity, is set on auxiliary valve core
Stopper slot is equipped with, spacer pin is inserted with sliding cavity, spacer pin end is provided with connection connection in stopper slot, on auxiliary valve core
The intercommunicating pore of inlet and sliding cavity.
Pass through above-mentioned technical proposal, the setting of intercommunicating pore will can connect between sliding cavity and inlet, such inlet
Interior liquid can be entered in sliding cavity, make the liquid pressure that inlet can be received between the upper and lower surface of intercommunicating pore
The effect of power, two surfaces are avoided above and below auxiliary valve core to produce pressure differential, when causing the fluid pressure in inlet to change
Causing hydraulic coupling to be more than the elastic force of elastic component causes auxiliary valve core to be pushed up out, and causes auxiliary valve core not have preferable sealing function.Together
When so set between auxiliary valve core and valve seat contradict sealing when do not need larger thrust, so elastic component required for provide
Elastic force is smaller, and in general spring is that can be achieved to ensure the effect for keeping sealing between auxiliary valve core and valve seat, can save cost.
Preferably, seal groove is provided with the sliding cavity, is provided with seal groove close with the conflict of main valve outer core
The sealing ring of envelope.
Pass through above-mentioned technical proposal, the setting of sealing ring can increase the sealing property between control chamber and main valve plug, prevent
When only inlet connects with liquid outlet, liquid enters control chamber upper end in the gap between main valve plug and control chamber, is in
Between main valve plug and bonnet, the normal slip of main valve plug is influenceed.
Preferably, fluid-through port is provided with the valve seat, fluid-through port upper end is provided with taper surface, cone is provided with auxiliary valve core
The primary sealing area of shape face fitting.
Pass through above-mentioned technical proposal, the stop valve during rotation valve rod makes main valve plug move upwards, main valve plug and
First depart between valve seat, the elastic component in sliding cavity extends but still there is certain thrust to make secondary valve in the process
Core keeps contradicting the state of sealing with valve seat, and then main valve plug continues up, and makes on spacer pin and auxiliary valve core stopper slot
End contradicts and driven to be departed between auxiliary valve core and valve seat.Now produced necessarily between the taper surface on auxiliary valve core and valve seat
Gap, the liquid of auxiliary valve core lower end quickly flow between auxiliary valve core and taper surface under the effect of the pressure.Liquid is in high pressure shape
Quick flowing can produce a cavitation under state, can produce damage, auxiliary valve core and cone to auxiliary valve core upper surface and seat surface
Shape is bonded between face, and contact area between the two is larger, it is possible to reduce cavitation improves between the two to sealing effectiveness
Service life and sealing effectiveness.
Preferably, the valve rod upper end is provided with handwheel, and handwheel includes inner ring and outer ring, is connected between inner ring and outer ring
Spoke, outer ring include fixed segmental arc and activity segmental arc, and fixed segmental arc is fixedly connected with spoke, and fixed segmental arc end horizontal is provided with
Neck, activity segmental arc end set have the fixture block of involute shape, inserted link are equipped between fixture block and neck.
Pass through above-mentioned technical proposal, when needing rotation valve rod, the inserted link of one end of activity segmental arc can be extracted, make to insert
Bar is around one section of rotation for being also inserted with inserted link.Because plunger end is provided with the fixture block of involute shape, so working as activity segmental arc
Do not plug one section of inserted link around the other end rotate when because the distance between fixture block edge and run-on point gradually increase, so
Activity segmental arc can not be further continued for rotating to the direction away from valve rod after activity segmental arc turns to a certain degree.Now activity segmental arc
Unfixed one section can increase torque when rotating handwheel away from valve rod, more laborsaving when making rotation handwheel.When having used
As long as rotating backward activity segmental arc afterwards, activity segmental arc both ends is each attached in neck can make outer ring turn into a circle again
Shape, avoid that other objects are caused to interfere because activity segmental arc is opened after having used.
Preferably, it is coated with overcoat made of flexible material in the activity segmental arc.
Pass through above-mentioned technical proposal, the setting of overcoat can increase the frictional force between activity segmental arc and hand, avoid
Skidding occurs between hand and activity segmental arc when rotating handwheel.Interactive segmental arc Surface coating has overcoat to completely cut off mutually simultaneously
Dynamic segmental arc surface contact with steam etc., avoids phenomenon of being got rusty in activity segmental arc to a certain extent, at the same overcoat by
Flexible material is made, and feel is preferable, avoids hand from being worn.
Preferably, the outer ring lower end is provided with the gripping groove slided when preventing from gripping between hand and handwheel.
Pass through above-mentioned technical proposal, when hand is held in handwheel outer ring, finger can be caught in gripping groove, to prevent from applying
Slided during power between hand and outer ring, cause to be exerted a force well.
Preferably, the spoke is the six roots of sensation and, the fixed segmental arc and arc of motion segment number uniform along inner ring outer circumference
It is 3, is spaced apart between fixed segmental arc and activity segmental arc.
Pass through above-mentioned technical proposal, spoke are the six roots of sensation, and outer ring can be divided into six regions, can just set 3 admittedly
Determine segmental arc and 3 activity segmental arcs, and be arranged at intervals activity segmental arc and fixed segmental arc.Can be equal by 3 activity segmental arcs during use
Expansion, is uniformly distributed it.So when needing rotary inner ring, 120 ° are spaced between activity segmental arc, may stand in during use another
Between the angle that individual activity segmental arc is formed and then two hands hold the activity segmental arcs of body both sides and exerted a force respectively, make work
Shi Gengjia is convenient, without following activity segmental arc to walk about.
Brief description of the drawings
Fig. 1 is the structural representation under the section state of embodiment；
Fig. 2 is the enlarged drawing at B in Fig. 1；
Fig. 3 is the appearance schematic diagram of embodiment；
Fig. 4 is that activity segmental arc is in the outline drawing that deployed condition is somebody's turn to do in embodiment；
Fig. 5 is the structural representation of handwheel lateral cross section in embodiment；
Fig. 6 is the enlarged drawing at A in Fig. 5.
Reference：1st, valve body；2nd, bonnet；3rd, valve rod；4th, inserted link；5th, handwheel；51st, inner ring；52nd, spoke；53rd, outer ring；
531st, activity segmental arc；532nd, fixed segmental arc；54th, fixture block；55th, neck；6th, gripping groove；7th, overcoat；8th, main valve plug；9th, spring；
10th, auxiliary valve core；11st, sliding cavity；12nd, stopper slot；13rd, intercommunicating pore；14th, spacer pin；15th, sealing ring；16th, valve seat；17th, control
Chamber；18th, liquid outlet；19th, inlet；20th, taper surface；21st, primary sealing area；22nd, annular groove；23rd, annular flange;24th, lead to
Liquid mouth.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
As shown in figure 1, a kind of stop valve, including valve body 1, the relative both sides of valve body 1 are respectively arranged with inlet 19 and gone out
Liquid mouth 18, control chamber 17 is provided between inlet 19 and liquid outlet 18.Inlet 19 connects with the bottom of control chamber 17, liquid outlet
18 connect with the middle part of control chamber 17.The opening of the upper end of control chamber 17 is provided with bonnet 2.The lower end of control chamber 17 is provided with valve seat
16, valve seat 16 is between inlet 19 and liquid outlet 18, and the top of valve seat 16 is provided with the main valve plug 8 coordinated with valve seat 16 and pair
Valve element 10.Main valve plug 8 and the inwall of control chamber 17 are slidably matched, and the groove of sealing ring 15, sealing ring are additionally provided with the inwall of control chamber 17
Sealing ring 15 is provided with 15 grooves.Sealing ring 15 contradicts with the surface of main valve plug 8.The upper end of main valve plug 8 has been wholely set valve rod 3, valve
Bar 3 stretches out bonnet 2 and is threadedly coupled between bonnet 2.The middle part of main valve plug 8 is provided with sliding cavity 11, matches somebody with somebody for sliding in sliding cavity 11
Conjunction has auxiliary valve core 10.Being provided between auxiliary valve core 10 and sliding cavity 11 makes auxiliary valve core 10 have the spring slided to the direction of valve seat 16
9.The side of auxiliary valve core 10 is provided with stopper slot 12, and the side of main valve plug 8 is provided with spacer pin 14.Spacer pin 14 and the axis of main valve plug 8
Vertically, the end of spacer pin 14 is caught in stopper slot 12, with prevent auxiliary valve core 10 out of sliding cavity 11 it is completely out.Auxiliary valve core 10
Intercommunicating pore 13 is provided between lower surface and upper surface, intercommunicating pore 13 connects inlet 19 and sliding cavity 11.
As shown in Fig. 2 the lower end of auxiliary valve core 10 is provided with primary sealing area 21, primary sealing area 21 is taper, in valve seat 16
The heart is provided with the through flow hole passed through for liquid, and logical upper end of boxing out is provided with taper surface 20, the taper of taper surface 20 and the first sealing
The taper in face 21 is identical.The three-sided surface of valve seat 16 is additionally provided with a circle annular flange 23, and annular flange 23 is on the outside of through flow hole, its
Section is trapezoidal.Be provided with an annular groove 22 on the lower surface of main valve plug 8, annular groove 22 be in annular flange 23 just on
Side.
When the stop valve is from connected state, main valve plug 8 and auxiliary valve core 10 are in above valve seat 16, and liquid is from inlet
19 are passed through the bottom of control chamber 17 and enter the middle part of control chamber 17 by the through-flow mouth 24 on valve seat 16 and flowed out from liquid outlet 18.
When the liquid stream for needing to block between inlet 19 and liquid outlet 18, rotation valve rod 3 moves downward main valve plug 8, the He of main valve plug 8
The distance between auxiliary valve core 10 and valve seat 16 gradually decrease and auxiliary valve core 10 is limited to valve seat 16 and contact and produce face sealing, cut-off
Liquid stream between inlet 19 and liquid outlet 18, then main valve plug 8 continues to move downward under the drive of valve rod 3, makes annular recessed
Two sides of groove 22 contradict with two sides of annular flange 23 produce linear sealing respectively, further improve sealing effectiveness.Now
Liquid in inlet 19 is entered in sliding cavity 11 by the intercommunicating pore 13 on auxiliary valve core 10, makes the upper and lower ends face of auxiliary valve core 10
Pressure it is consistent, auxiliary valve core 10 in the presence of the compression stress of spring 9 between valve seat 16 keep conflict state.Intercommunicating pore 13
Setting can avoid the pressure change of inlet 19 to the bad student's large effect of auxiliary valve core 10.Inlet 19 and go out liquid when needing to connect
When mouthfuls 18, main valve plug 8 is moved upwards during rotational valve core, and conflict state is progressively disengaged between main valve plug 8 and valve seat 16, simultaneously because
The presence of the compression stress of spring 9, auxiliary valve core 10 can still keep keeping the state for contradicting sealing between valve seat 16.Then main valve
Core 8 continues to rise, and the upper end of the spacer pin 14 on main valve plug 8 and the stopper slot 12 on auxiliary valve core 10 contradicts and drives auxiliary valve core 10
Motion upwards, so that departing from sealing state between auxiliary valve core 10 and valve seat 16, inlet 19 connects with liquid outlet 18.
As shown in Figure 3 and Figure 5, in order to facilitate rotation valve rod, it is provided with handwheel in valve rod upper end, handwheel includes outer ring and interior
Circle, the outer ring 53 of handwheel 5 are divided for activity segmental arc 531 and fix segmental arc 532, be spaced between fixed segmental arc 532 and activity segmental arc 531
Arrangement.Fixed segmental arc 532 is connected by spoke 52 with the inner ring 51 of handwheel 5 simultaneously.The quantity of spoke 52 is the six roots of sensation, fixed segmental arc
532 and the quantity of activity segmental arc 531 be 3.The horizontal neck 55 of the end set of segmental arc 532 is being fixed, in activity segmental arc 531
Fixture block 54 that end set is engaged with neck 55 simultaneously makes fixture block 54 be in involute shape, is then worn on neck 55 and fixture block 54
If an inserted link 4, a center of rotation is provided for the rotation of activity segmental arc 531.Because the end fixture block 54 of activity segmental arc 531 is
Involute shape, so during by the one end of activity segmental arc 531, first the direction away from valve rod 3 rotates, activity segmental arc 531 is another
The side of fixture block 54 of one end gradually decreases to the distance between the bottom of neck 55 and finally contradicted, and produces a position-limiting action,
Prevention activity segmental arc 531 is rotated further.Now the other end of activity segmental arc 531 is in away from valve rod 3, when in activity segmental arc 531 not
When fixed one section exerts a force, the distance between point of application to valve rod 3 increases relative to the arm of force that exerted a force in fixed segmental arc 532
Add, it is possible to reduce rotate power required during handwheel 5, handwheel 5 is rotated to facilitate.When needing to rotate backward handwheel 5, as long as changing
The run-on point of activity segmental arc 531.Can be by the both ends of activity segmental arc 531 by inserting when need not rotate handwheel 5 simultaneously
Bar 4 is fixed in neck 55, avoids activity segmental arc 531 from deploying, and causes to interfere with other objects.
In addition as shown in Figure 4 and Figure 6, in order to avoid being slided during handwheel 5 is rotated between hand and handwheel 5,
In the lower end of handwheel 5, gripping groove 6 is set.When hand is held on handwheel 5, finger can be caught in gripping groove 6, prevent from exerting a force
Skidding occurs between Shi Shouyu gripping grooves 6.While in order to avoid being sent out when rotating handwheel 5 between hand and activity segmental arc 531
Raw scratch phenomenon, is provided with overcoat 7 made of the flexible materials such as rubber in activity segmental arc 531, and the setting of overcoat 7 can be with
Avoid hand during force from being worn, while also can avoid activity segmental arc 531 that corrosion phenomena occurs in use to a certain extent.
Described above is only exemplary embodiment of the present utility model, not for limitation protection model of the present utility model
Enclose, the scope of protection of the utility model is determined by appended claim.
Claims (7)
1. a kind of stop valve, including valve body (1), inlet (19) and liquid outlet (18), inlet are provided with valve body (1)
(19) control chamber (17) is provided between liquid outlet (18), valve body (1) upper end is provided with bonnet (2), set in control chamber (17)
It is equipped with valve seat (16) and main valve plug (8) and auxiliary valve core (10) with valve seat (16) fitted seal, main valve plug (8) upper end is provided with drive
The valve rod (3) of dynamic main valve plug (8) motion, valve rod (3) upper end are stretched out bonnet (2) and are threadedly coupled with bonnet (2), main valve plug (8)
Sliding cavity (11) is inside provided with, auxiliary valve core (10) is slidably arranged in sliding cavity (11), and drive pair is provided with sliding cavity (11)
The elastic component that valve element (10) slides to valve seat (16) direction, is provided with stopper slot (12) on auxiliary valve core (10), in sliding cavity (11)
Spacer pin (14) is inserted with, spacer pin (14) end is interior in stopper slot (12), it is characterized in that：The company of being provided with auxiliary valve core (10)
The intercommunicating pore (13) of logical inlet (19) and sliding cavity (11).
2. stop valve according to claim 1, it is characterized in that：Seal groove is provided with the sliding cavity (11), is sealed
The sealing ring (15) that sealing is contradicted with main valve plug (8) outer wall is provided with ring recess.
3. stop valve according to claim 1, it is characterized in that：Fluid-through port is provided with the valve seat (16)（24）, lead to liquid
Mouthful（24）Upper end is provided with taper surface (20), and the primary sealing area (21) of taper surface (20) fitting is provided with auxiliary valve core (10).
4. stop valve according to claim 1, it is characterized in that：Valve rod (3) upper end is provided with handwheel (5), handwheel (
5) include inner ring (51) and outer ring (53), spoke (52) is connected between inner ring (51) and outer ring (53), outer ring (53) include solid
Determine segmental arc (532) and activity segmental arc (531), fixed segmental arc (532) is fixedly connected with spoke (52), fixed segmental arc (532) end
Horizontally disposed to have neck (55), activity segmental arc (531) end set has the fixture block (54) of involute shape, fixture block (54) and neck
(55) inserted link (4) is equipped between.
5. stop valve according to claim 4, it is characterized in that：Flexible material system is coated with the activity segmental arc (531)
Into overcoat (7).
6. stop valve according to claim 4, it is characterized in that：Outer ring (53) lower end be provided with prevent grip when hand with
The gripping groove (6) slided between handwheel (5).
7. stop valve according to claim 4, it is characterized in that：The spoke (52) is for the six roots of sensation and round along inner ring (51) outside
Zhou Junbu, the fixed segmental arc (532) and activity segmental arc (531) quantity are 3, fixed segmental arc (532) and activity segmental arc
(531) it is spaced apart between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568863.8U CN207034350U (en) | 2017-05-22 | 2017-05-22 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720568863.8U CN207034350U (en) | 2017-05-22 | 2017-05-22 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207034350U true CN207034350U (en) | 2018-02-23 |
Family
ID=61480126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720568863.8U Expired - Fee Related CN207034350U (en) | 2017-05-22 | 2017-05-22 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207034350U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561572A (en) * | 2018-06-03 | 2018-09-21 | 哈电集团哈尔滨电站阀门有限公司 | New triple sealing scouring-proof stop valve |
| CN111810654A (en) * | 2019-04-12 | 2020-10-23 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| CN114909483A (en) * | 2022-07-15 | 2022-08-16 | 山东鑫亚格林鲍尔燃油系统有限公司 | Electronic expansion valve |
-
2017
- 2017-05-22 CN CN201720568863.8U patent/CN207034350U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561572A (en) * | 2018-06-03 | 2018-09-21 | 哈电集团哈尔滨电站阀门有限公司 | New triple sealing scouring-proof stop valve |
| CN111810654A (en) * | 2019-04-12 | 2020-10-23 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| CN111810654B (en) * | 2019-04-12 | 2022-06-17 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
| CN114909483A (en) * | 2022-07-15 | 2022-08-16 | 山东鑫亚格林鲍尔燃油系统有限公司 | Electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20190522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |