CN205978552U

CN205978552U - Stop valve

Info

Publication number: CN205978552U
Application number: CN201620736580.5U
Authority: CN
Inventors: 罗启明
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-13
Filing date: 2016-07-13
Publication date: 2017-02-22
Anticipated expiration: 2026-07-13

Abstract

The utility model relates to a valve, especially, relate to a stop valve. A stop valve, its circulation size that is used for flow control, stop valve includes closure member, a valve body, the valve rod, it is first that cup joint the device and the second cup joints the device, set up the valve pocket that runs through the valve body on the valve body, closure member sets up in the valve pocket, the inside through -hole that supplies the fluid flow to cross that is provided with of closure member, the valve rod can drive closure member at the valve pocket internal rotation with regulation and control flow dimension, firstly cup joint device and second to cup joint the device setting unanimous in the both ends and the structure between them of valve pocket, firstly cup joint the central authorities that device and second cup jointed the device and all seted up the through -hole, first device and the second of cup jointing cup joints the passageway that through -hole and through -hole butt joint on the closure member on the device can provide the fluid circulation, and the relative both ends of closure member hold first device and the second of cup jointing respectively and cup joint in the device just closure member to cup joint the device for two rotatable. The utility model provides a pair of stop valve have the adjusting function good, regulation and control laborsaving advantage.

Description

Stop valve

【Technical field】

This utility model is related to a kind of valve, more particularly, to a kind of stop valve.

【Background technology】

Valve is that it is widely used in the modern times for controlling the device of the direction of fluid, pressure, flow in fluid system In commercial production.Stop valve, is also pipe valve, is a kind of one of most popular valve.Why very popular stop valve is, is Because during its opening and closing, the frictional force between sealing surface is little, easy to maintenance, pressure is applied widely.

When current stop valve all there is a problem of adjusting poor performance, opening and closing, required external force is larger.Therefore, how When solving the problems, such as the regulation poor performance of existing stop valve, opening and closing, required external force is larger becomes manufacture, produces cut-off The key issue that valve must solve.

【Utility model content】

For required external force larger problem when the regulation poor performance of existing stop valve presence, opening and closing, this practicality A kind of stop valve of new offer.

The scheme that this utility model solves technical problem is a kind of stop valve, and it is used for controlling the circulation size of fluid, Described stop valve includes opening and closing element, valve body, valve rod, the first sleeve joint device and the second sleeve joint device, valve body offers and runs through valve The valve pocket of body, opening and closing element is arranged in valve pocket, and opening and closing element is internally provided with the through hole flowing through for fluid, and valve rod is connected with opening and closing element And opening and closing element can be driven to rotate in valve pocket to regulate and control uninterrupted, the first sleeve joint device and second sleeve joint device of fluid circulation It is arranged on the two ends of valve pocket and both structures are consistent, the central authorities of the first sleeve joint device and the second sleeve joint device all offer for stream The through hole opening up on the through hole that body flows through, the first sleeve joint device and the second sleeve joint device is docked with the through hole opening up on opening and closing element can The passage of fluid circulation is provided, and the relative two ends of opening and closing element are held in the first sleeve joint device and the second sleeve joint device respectively, open Closing member is rotatable with respect to the first sleeve joint device and the second sleeve joint device.

Preferably, described first sleeve joint device and the second sleeve joint device are arc surface with the contact surface of opening and closing element, described circle The radian that the radian of cambered surface is in contact with it part with opening and closing element is consistent.

Preferably, the diameter of the through hole described first sleeve joint device and the second sleeve joint device opening up is greater than equal to keying The diameter of the through hole opening up on part the height less than opening and closing element.

Preferably, described stop valve further includes sealing member, and described sealing member is arranged on the first sleeve joint device and opens Between closing member and between the second sleeve joint device and opening and closing element, to strengthen the sealing property of its joint, described sealing member is O-shaped Sealing ring.

Preferably, described first sleeve joint device includes locating part and Coupling, described locating part is provided with arc surface with Opening and closing element contacts, and the radian that the radian of described arc surface and opening and closing element are in contact with it part is in the same size, and Coupling is arranged on Locating part fits tightly away from the side direction of opening and closing element and with locating part, and is connected with valve body, described first sleeve joint device On through hole be arranged on locating part, described Coupling is provided with through hole, on the through hole on described Coupling and locating part Through hole docking can provide the passage of fluid circulation.

Preferably, described Coupling is being disposed with the second round boss and the first circle in the one side of locating part Boss, the first round boss is stuck in the fourth hole of locating part affects sealing to prevent locating part from occurring sliding, and second Round boss is fitted tightly with locating part.

Preferably, the diameter of the through hole on described Coupling is less than the diameter equal to the through hole on locating part.

Preferably, described first sleeve joint device and the second sleeve joint device all further include sealing member, and described sealing member divides It is not arranged between Coupling and the locating part of the first sleeve joint device and the second sleeve joint device.

Preferably, described stop valve further includes sealing device, described sealing device be enclosed within valve rod and with valve body in Wall fits tightly, and described sealing device is provided with soft material and the structure of hard material interphase distribution.

Preferably, described sealing device include the first gasket ring, the second gasket ring, the 3rd gasket ring, the 4th gasket ring, the 5th gasket ring with And rod set, the first gasket ring, the second gasket ring, the 3rd gasket ring, the 4th gasket ring and the 5th gasket ring are enclosed within valve with order from top to bottom On bar, rod set is enclosed within the outer wall of the first gasket ring, the second gasket ring and the 3rd gasket ring and is fitted tightly with valve interior wall, and valve rod is hard Material, the first gasket ring, the 3rd gasket ring are soft material, and the second gasket ring is hard metal material, and the 4th gasket ring is soft metal Material, the 5th gasket ring is Teflon material, and rod set is hard material.

Compared with prior art, stop valve of the present utility model, it is used for controlling the circulation size of fluid, described cut-off Valve includes opening and closing element, valve body, valve rod, the first sleeve joint device and the second sleeve joint device, and valve body offers the valve pocket running through valve body, Opening and closing element is arranged in valve pocket, and opening and closing element is internally provided with the through hole flowing through for fluid, and valve rod is connected with opening and closing element and can drive Opening and closing element rotates to regulate and control the uninterrupted of fluid circulation in valve pocket, and the first sleeve joint device and the second sleeve joint device are arranged on valve The two ends in chamber and both structures be consistent, and the central authorities of the first sleeve joint device and the second sleeve joint device all offer to be flow through for fluid The through hole opening up on through hole, the first sleeve joint device and the second sleeve joint device is docked with the through hole opening up on opening and closing element and can provide fluid The passage of circulation, and the relative two ends of opening and closing element are held in the first sleeve joint device and the second sleeve joint device respectively, opening and closing element is relatively Rotatable in the first sleeve joint device and the second sleeve joint device.Stop valve of the present utility model has regulation superior performance, regulation and control save The advantage of power.Further, described stop valve further includes sealing device, and described sealing device is enclosed within valve rod and and valve body Inwall fits tightly, and described sealing device is provided with the structure of soft material and hard material interphase distribution to strengthen stop valve Sealing and wearability.Stop valve of the present utility model has good sealing and wearability, even if in long-time use In the case of also can have good sealing.

【Brief description】

Fig. 1 is the perspective view of stop valve of the present utility model.

Fig. 2 is the configuration schematic diagram of stop valve of the present utility model.

Fig. 3 is the perspective view of valve body of the present utility model.

Fig. 4 A is the cross-sectional view that valve body of the present utility model is cut open at A-A.

Fig. 4 B is the cross-sectional view that valve body of the present utility model is cut open at B-B.

Fig. 5 is the perspective view of opening and closing element of the present utility model.

Fig. 6 A is that opening and closing element of the present utility model is placed on the cross-sectional view cut in valve body and at A-A.

Fig. 6 B is that opening and closing element of the present utility model is placed on the cross-sectional view cut in valve body and at B-B.

Fig. 7 is the perspective view of valve rod of the present utility model.

Fig. 8 is that sealing device of the present utility model is enclosed within the structural representation on valve rod

Fig. 9 is the configuration schematic diagram of sealing device of the present utility model.

Figure 10 is the cross-sectional view of stop valve of the present utility model.

Figure 11 is the perspective view of locating part of the present utility model.

Figure 12 is the first viewing angle constructions schematic diagram of Coupling of the present utility model.

Figure 13 is the second viewing angle constructions schematic diagram of Coupling of the present utility model.

Figure 14 is the generalized section when realizing conducting function for the stop valve of the present utility model.

【Specific embodiment】

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only in order to solve Release this utility model, be not used to limit this utility model.

The keying including valve body 15, being arranged in valve body please also refer to Fig. 1 and Fig. 2, stop valve 10 of the present utility model Part 11, valve rod 13, the first sleeve joint device 17, the second sleeve joint device 18 and sealing device 19.With the first sleeve joint device 17 and The setting direction of two sleeve joint devices 18 is defined as X-axis, defines Z axis with the bearing of trend along valve rod 13, with defined good X-axis, Z axis define a corresponding Y-axis again, perpendicular to X-axis and Z axis, X-axis, Y-axis and Z axis constitute a coordinate reference to Y-axis System, in this utility model, involved orientation all to be defined with this coordinate system.Valve body 15 be hollow structure and play support and close The effect of envelope, opening and closing element 11 is arranged in the valve body 15 of hollow structure and can rotate in valve body 15, and valve rod 13 is just being arranged on Z axis It is connected to drive opening and closing element 11 to rotate on direction and with opening and closing element 11 clamping, thus realizing the on or off of stop valve 10.Close Seal apparatus 19 are enclosed within to ensure the sealing between valve rod 13 and valve body 15 on valve rod 13, and sealing device 19 itself is wear-resisting Property good, it can be avoided that occur sealing device 19 itself due to long-time using and occur to wear and tear thus leading to what sealing was deteriorated to ask Topic, the setting of sealing device 19 can greatly prolong the service life of stop valve 10.First sleeve joint device 17 and the second sleeve joint device 18 are separately positioned on the relative both sides of valve body 15, the first sleeve joint device 17 and the second sleeve joint device 18 and valve body 15 along X-direction All detachably connected by screw.

Please also refer to Fig. 3 and Fig. 4 A and Fig. 4 B, valve body 15 includes integrally formed valve seat 151 and valve gap 153 two parts, Valve gap 153 be shaped in valve seat 151 top (the position word such as involved forward and backward, left and right in this utility model, only Relative position between components and parts in given view, and not absolute position).One is offered along X-direction insertion on valve seat 151 Valve pocket 1511, the section of valve pocket 1511 is circle, and opening and closing element 11 is just arranged in valve pocket 1511.The bottom centre of valve seat 151 Place offers an air vent 1513, and air vent 1513 is connected with valve pocket 1511, when being operated using stop valve 10, air vent 1513 can be closed with vent plug.Valve seat 151 offers first through hole 1515 at the top relative with base bleed mouth 1513, and first Through hole 1515 is connected with valve pocket 1511.Annulus section 1531 and platform section 1533 two parts, annulus section 1531 are set on valve gap 153 It is arranged between valve seat 151 and platform section 1533.Second through hole 1535, the second through hole 1535 and first are offered on valve gap 153 Through hole 1515 is connected, and the diameter of the second through hole 1535 than first through hole 1515 diameter greatly to form an anchor ring 155, anchor ring 155 plays the effect of supporting sealing device 19.Four location holes 1555 are symmetrically offered on annulus section 1531, fixed Position screw may be provided in location hole 1555.As variant embodiment of the present utility model, the quantity of location hole 1555 and position Require not limit.

Please also refer to Fig. 5 and Fig. 6 A, Fig. 6 B, opening and closing element 11 is the shape of approximate spheres, and opening and closing element 11 is arranged on valve In chamber 1511, in order that opening and closing element 11 can be placed in valve pocket 1511, the height of opening and closing element 11 is less than or is equal to valve pocket 1511 Internal diameter.As preferred, the height 1～2mm less than the internal diameter of valve pocket 1511 of opening and closing element 11.Opening and closing element 11 is along Z axis just It is provided with the first plane 117 at the position of valve gap 153 on direction, the first plane 117 offers a groove 111, when opening When closing member 11 is stably placed in valve pocket 1511, the position of groove 111 is located at the underface of first through hole 1515 on valve seat 151. Third through-hole 113 is offered on opening and closing element 11, the section of third through-hole 113 is circle, when conducting realized by stop valve 10, the 3rd The passage providing fluid circulation is shown in run through direction and the direction one of running through of valve pocket 1511 of through hole 113.In order to ensure opening and closing element 11 decay resistance, the material of opening and closing element 11 is preferably ceramic material.

Refer to Fig. 7, valve rod 13 includes integrally formed rotary head 131, cylindrical section 133, block 135 from top to bottom successively And plush copper 137 4 part, plush copper 137 is positioned close to one end of opening and closing element 11.Valve rod 13 sequentially passes through on valve gap 153 Groove 111 phase clamping on first through hole 1515 on two through holes 1535 and valve seat 151 and opening and closing element 11, block 135 with open The first plane 117 in closing member 11 fits tightly, and plush copper 137 card is placed in the groove 111 on opening and closing element 11.When being turned round by external force During dynamic rotary head 131, valve rod 13 passes through plush copper 137 and the clamping of groove 111 drives opening and closing element 11 to rotate.The material of valve rod 13 It is preferably metal material.

Please also refer to Fig. 8 and Fig. 9, sealing device 19 includes rod set 191, the first gasket ring 193, the second gasket ring the 194, the 3rd Gasket ring 195, the 4th gasket ring 196, the 5th gasket ring 197.First gasket ring 193, the second gasket ring 194, the 3rd gasket ring 195, the 4th gasket ring 196th, the 5th gasket ring 197 is tightly placed on the cylindrical section 133 on valve rod 13 successively with order from top to bottom, and rod set 191 closely covers It is combined on the outer wall of the first gasket ring 193, the second gasket ring 194 and the 3rd gasket ring 195 and the upper surface with the 4th gasket ring 196 and valve Cover 151 inwalls to fit tightly to be positioned at the first gasket ring 193, the second gasket ring 194 and the 3rd gasket ring 195 on valve rod 13.The Four gasket rings 196 are fitted tightly on the anchor ring 155 of valve body 15, and the 5th gasket ring 197 is arranged on the 4th gasket ring 196 and valve rod 13 To strengthen the wearability of junction between block 135, as preferred, the 5th gasket ring 197 is fitted tightly with valve body 15 inwall.Bar Annular groove 1911, the position of the location hole 1555 on the position of annular groove 1911 and valve body 15 are provided with the outer wall of set 191 Put correspondence, set screw passes through location hole 1555 and is against in annular groove 1911 to realize rod set 191 determining in the Z-axis direction Position.The material of rod set 191 is hard material, preferably metal material；The material of the first gasket ring 193 is soft material, preferably Elastomeric material；The material of the second gasket ring 194 is hard material, preferably metal material；The material of the 3rd gasket ring 195 is soft material Material, preferably elastomeric material；The material of the 4th gasket ring 196 is soft metal material, preferably copper material；The material of the 5th gasket ring 197 Matter is non-stick high-abrasive material, preferably Teflon.The knot that between them, this hard material and soft material mutually stack Structure collocation can ensure that sealing device 19 tool has good wearability, even if also can have well under the long-time situation using Sealing, provides the service life of stop valve 10 significantly.In this utility model, the hardness number of soft material be preferably 20A～ 80A (shore hardness), more preferably 30A～70A (shore hardness)；And the hardness number of hard material is greater than 140HB (cloth Family name's hardness)；The hardness number of soft metal material is 30～50HB (Brinell hardness), and (Bu Shi is hard for more preferably 35～45HB Degree).

Refer to Figure 10, the first sleeve joint device 17 includes Coupling 175, sealing member 171 and locating part 173, locating part 173 are arranged in valve pocket 1511 and are close to opening and closing element 11 to be limited to opening and closing element 11 in valve pocket 1511, and Coupling 175 is arranged On locating part 173 is away from the side direction of opening and closing element 11 and detachably connected by screw with valve seat 151, external pipe leads to Cross Coupling 175 to be connected with stop valve 10, sealing member 171 is arranged between Coupling 175 and locating part 173 to strengthen both The sealing connecting.As variant embodiment of the present utility model, sealing member 171 can omit, and Coupling 175 is direct and spacing Part 173 fits tightly.As another variant embodiment of the present utility model, sealing member 171 can omit, locating part 173 and set Fitting 175 is formed in one setting.In order to ensure the sealing of stop valve 10, the external diameter size of locating part 173 and valve pocket 1511 Internal diameter in the same size with ensure locating part 173 can be fitted tightly on the inwall of valve pocket 1511.The knot of the second sleeve joint device 18 Structure is consistent with the structure of the second sleeve joint device 17, therefore here no longer describes.First sleeve joint device 17 and the second sleeve joint device 18 are altogether With the effect both having played positioning opening and closing element 11 together, play the effect connecting with external pipe again

Refer to Figure 11, locating part 173 center offers fourth hole 1731, and the diameter of fourth hole 1731 is preferred 1～1.1 times of the diameter of third through-hole 113 for opening up on opening and closing element 11 can be swimmingly from third through-hole to guarantee fluid 113 are flowed into fourth hole 1731, and the diameter of fourth hole 1731 is less than the height of opening and closing element 11 in order to avoid opening and closing element 11 is whole Body is trapped in locating part 173 cannot be realized positioning.Locating part 173 is provided with an arc surface at the edge of fourth hole 1731 1733, this arc surface 1733 fits tightly with opening and closing element 11 and opening and closing element 11 can rotate on this arc surface 1733, arc surface The radian that 1733 radian is in contact with it part with opening and closing element 11 is in the same size.In order to ensure the decay resistance of locating part 173, The material of locating part 173 is preferably ceramic material.

Sealing member 171 central authorities offer fifth hole (not shown), and fifth hole (not shown) is with fourth hole 1731 even Logical, the diameter of fifth hole (not shown) is greater than or is equal to the diameter of fourth hole 1731 can be swimmingly from the to ensure fluid Four through hole 1731 flows into fifth hole (not shown), and sealing member 171 is preferably O-ring seals, and the material of sealing member 171 is preferably Elastomeric material.

Refer to Figure 12 and Figure 13, Coupling 175 is being provided with the first round boss 1751 in the one side of valve seat 151 With the second round boss 1753, the external diameter of the first round boss 1751 will be equal to the diameter of fifth hole (not shown), the second circle The external diameter of shape boss 1753 is greater than the diameter of fifth hole (not shown).When Coupling 175 is connected by screw with valve seat 151 When, the first round boss 1751 is stuck in positioning seals 171 in the fifth hole (not shown) of sealing member 171, and second is circular Boss 1753 and locating part 173 compress sealing member 171 to ensure the sealing of junction between sleeve joint device 17 and valve seat 151 Property.The central authorities of the first round boss 1751 offer clematis stem hole 1755, clematis stem hole 1755 and fifth hole (not shown) pair Connect to provide the passage of fluid circulation, therefore the diameter in clematis stem hole 1755 is preferably smaller than equal to the straight of fifth hole (not shown) Footpath.Coupling 175 is provided with the 3rd boss 1757 in the one side away from valve seat 151, and the 3rd boss 1757 is connected with external agency Connect, the central authorities of the 3rd boss 1757 offer the 7th through hole 1777, the 7th through hole 1777 is connected with external pipe, the 7th through hole 1777 are turned on clematis stem hole 1755, the 7th through hole 1777 with diameter greater than or be equal to clematis stem hole 1755 diameter with ensure flow Physical ability swimmingly flows into the 7th through hole 1777 thus flowing to external pipe through clematis stem hole 1755, and the shape of the 3rd boss 1757 is excellent Elect hexagonal boss as, it can also be square boss, round boss or triangle boss.

Please also refer to Figure 10 and Figure 14, the specific work process of stop valve 10 of the present utility model is：Not using cut-off During valve 10, the third through-hole 113 on opening and closing element 11 is disconnected with valve pocket 1511, and stop valve 10 is in cut-off state.Fluid Flow into from the sleeve joint device 17 of side, when needing to realize conducting function, by external force rotation valve rod 13 thus driving opening and closing element 11 rotations, third through-hole 113 realizes conducting with valve pocket 1511, and fluid can the sleeve joint device 17 of opposite side flow out.When valve rod 13 When rotating 90 °, the maximum flow of fluid, when valve rod 13 is rotated further by 90 °, stop valve 10 ended again fluid circulation it is possible to Rotational angle according to valve rod 13 is controlling the uninterrupted of fluid.

As the first variant embodiment of the present utility model, the second gasket ring 194 of sealing device 19 and the 3rd gasket ring 195 can To omit, the material of the first gasket ring 193 is preferably elastomeric material, and rod set 191 is just enclosed within the outer surface of the first gasket ring.

As the second variant embodiment of the present utility model, the second gasket ring 194 of sealing device 19, the 3rd gasket ring 195, Four gasket rings 196 and the 5th gasket ring 197 can omit, and the first gasket ring 193 is preferably soft material, more preferably rubber material Material, rod set 191 is just enclosed within the outer surface of the first gasket ring.

As the 3rd variant embodiment of the present utility model, the first sleeve joint device 17 and the second sleeve joint device 18 are all integrated Molding is arranged, and is provided with sealing member 175 to protect in the joint place of the first sleeve joint device 17, the second sleeve joint device 18 and opening and closing element 11 Demonstrate,prove the sealing of its joint place.Sealing member 175 is preferably O-ring seals, and preferably elastomeric material.

As the 4th variant embodiment of the present utility model, the second plane 117 of opening and closing element 11 arranges a plush copper structure, The groove structure that setting one is matched with this plush copper structure on valve rod 13, realizes valve rod 13 by the clamping of plush copper and groove Opening and closing element 11 is driven to rotate.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this Any modification made within the principle of utility model, equivalent and improvement etc. all should comprise protection domain of the present utility model Within.

Claims

1. a kind of stop valve, its be used for control fluid circulation size it is characterised in that：Described stop valve include opening and closing element, Valve body, valve rod, the first sleeve joint device and the second sleeve joint device, valve body offers the valve pocket running through valve body, and opening and closing element is arranged on In valve pocket, opening and closing element is internally provided with the through hole flowing through for fluid, and valve rod is connected with opening and closing element and can drive opening and closing element in valve pocket The uninterrupted to regulate and control fluid circulation for the interior rotation, the first sleeve joint device and the second sleeve joint device are arranged on the two ends and two of valve pocket The structure of person is consistent, and the central authorities of the first sleeve joint device and the second sleeve joint device all offer the through hole flowing through for fluid, first set The through hole opening up on connection device and the second sleeve joint device docks the passage that can provide fluid circulation with the through hole opening up on opening and closing element, And the relative two ends of opening and closing element are held in the first sleeve joint device and the second sleeve joint device respectively, opening and closing element is hinged with respect to first set Put rotatable with the second sleeve joint device.

2. stop valve as claimed in claim 1 it is characterised in that：Described first sleeve joint device and the second sleeve joint device and keying The contact surface of part is arc surface, and the radian that the radian of described arc surface is in contact with it part with opening and closing element is consistent.

3. stop valve as claimed in claim 1 it is characterised in that：Open up on described first sleeve joint device and the second sleeve joint device Through hole diameter be greater than equal to the through hole opening up on opening and closing element diameter and less than opening and closing element height.

4. stop valve as claimed in claim 3 it is characterised in that：Described stop valve further includes sealing member, described close Sealing is arranged between the first sleeve joint device and opening and closing element and between the second sleeve joint device and opening and closing element, to strengthen its joint Sealing property, described sealing member be O-ring seal.

5. stop valve as claimed in claim 1 it is characterised in that：Described first sleeve joint device includes locating part and Coupling, It is provided with arc surface on described locating part to contact with opening and closing element, the radian of described arc surface and opening and closing element are in contact with it part Radian is in the same size, and Coupling is arranged on locating part and fits tightly away from the side direction of opening and closing element and with locating part, and with Valve body connects, and the through hole on described first sleeve joint device is arranged on locating part, and described Coupling is provided with through hole, described set Through hole on fitting docks the passage that can provide fluid circulation with the through hole on locating part.

6. stop valve as claimed in claim 5 it is characterised in that：Described Coupling is setting in the one side of locating part successively It is equipped with the second round boss and the first round boss, the first round boss is stuck in the fourth hole of locating part to prevent locating part Occur sliding and affect sealing, the second round boss and locating part fit tightly.

7. stop valve as claimed in claim 5 it is characterised in that：The diameter of the through hole on described Coupling is less than equal to limit The diameter of the through hole on the part of position.

8. stop valve as claimed in claim 5 it is characterised in that：Described first sleeve joint device and the second sleeve joint device all enter one Step includes sealing member, described sealing member be separately positioned on the Coupling of the first sleeve joint device and the second sleeve joint device and locating part it Between.

9. stop valve as claimed in claim 1 it is characterised in that：Described stop valve further includes sealing device, described close Seal apparatus are enclosed within valve rod and are fitted tightly with valve interior wall, and described sealing device is provided with soft material and hard material is alternate The structure of arrangement.

10. stop valve as claimed in claim 9 it is characterised in that：Described sealing device include the first gasket ring, the second gasket ring, 3rd gasket ring, the 4th gasket ring, the 5th gasket ring and rod set, the first gasket ring, the second gasket ring, the 3rd gasket ring, the 4th gasket ring and Five gasket rings are enclosed within valve rod with order from top to bottom, and rod set is enclosed within the outer wall of the first gasket ring, the second gasket ring and the 3rd gasket ring And fit tightly with valve interior wall, valve rod is hard material, and the first gasket ring, the 3rd gasket ring are soft material, and the second gasket ring is hard Matter metal material, the 4th gasket ring is soft metal material, and the 5th gasket ring is Teflon material, and rod set is hard material.