CN211501666U

CN211501666U - Ultrahigh-pressure electric stop valve

Info

Publication number: CN211501666U
Application number: CN201921515366.7U
Authority: CN
Inventors: 王虎; 何军
Original assignee: Gu'an Xingguang Wote High Pressure Water Equipment Co ltd
Current assignee: Gu'an Xingguang Wote High Pressure Water Equipment Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-09-15
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses an ultrahigh pressure electric stop valve, including electric actuator, the valve body, flange, the valve barrel, press the cover, drive nut, case and valve rod, press cover and valve barrel crimping to be fixed in flange and valve barrel that the valve pocket was established with the valve body encloses and separate into the valve pocket inner chamber and the valve pocket exocoel of intercommunication with the valve pocket, flange's central authorities are worn to locate by the movable about the valve rod, movable about the case is from last to wearing to locate down in pressing cover and the valve pocket, the case separates into the balanced chamber and the intake antrum of mutual intercommunication with the valve pocket inner chamber, the sealed face of the case seal of locating the valve pocket on the valve barrel and locating the case lower extreme can remove the formula and seal up, but drive nut rotary threaded connection is in the upper portion of valve rod, fixed connection. The utility model discloses an ultrahigh pressure electric stop valve, electric actuator size is little, and compact structure has good sealing performance, and the reliability and the life of valve obtain improving.

Description

Ultrahigh-pressure electric stop valve

Technical Field

The utility model relates to a valve especially relates to an ultrahigh pressure electric stop valve.

Background

The ultrahigh pressure water jet technology is a high-efficiency and multifunctional practical technology, is widely applied to the fields of coal mine gas extraction, ultrahigh pressure cleaning and the like at present, and is used for pressurizing low-pressure water through an ultrahigh pressure plunger water pump to form ultrahigh pressure water which is conveyed to a required position working point through a high-pressure pipeline. The stop valve is usually used as a pipeline isolation valve for stopping the flow of a medium or for pipeline isolation and maintenance operation, and is a functional valve commonly matched with an outlet of an ultrahigh pressure pump set. The ultrahigh pressure water pump has huge outlet pressure, has higher requirements on the safety of the whole pipeline and a valve, and electric control is a very safe and reliable remote automatic control mode, but a plurality of electric stop valves are provided with larger electric devices due to structural limitation at present, the valve port closing sealing effect is poor, and the stability and the reliability are not enough.

Disclosure of Invention

The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing an ultrahigh pressure electric stop valve can be applied to during operating pressure is greater than 100 Mpa's ultrahigh pressure water system, and the electric actuator size is little, and compact structure has good sealing performance, and the reliability and the life of valve obtain improving.

The utility model discloses an ultrahigh pressure electric stop valve, which comprises an electric device, a valve body, a connecting flange, a valve sleeve, a pressing sleeve, a transmission nut, a valve core and a valve rod, wherein the connecting flange is pressed on the top surface of the valve body and is enclosed with a valve cavity between the valve body, the valve body is respectively provided with a water inlet and a water outlet, the pressing sleeve and the valve sleeve are pressed and fixed in the valve cavity from top to bottom in sequence, the upper surface of the pressing sleeve is sealed and propped against the lower surface of the connecting flange, the outer wall of the lower part of the pressing sleeve and the outer wall of the lower part of the valve sleeve are respectively sealed and propped against the inner wall of the valve body, the pressing sleeve and the valve sleeve divide the valve cavity into a valve sleeve inner cavity and a valve sleeve outer cavity which are mutually communicated, the valve sleeve outer cavity is communicated with the water outlet, the valve rod can be vertically movably penetrated in, the lower end of the valve rod is integrally formed or fixedly connected with the upper end of the valve core, the valve core is movably arranged in the pressing sleeve and the valve sleeve from top to bottom in a penetrating way, the outer wall of the valve core is in sliding sealing and abutting contact with the inner wall of the pressing sleeve, the inner cavity of the valve sleeve is divided into a balance cavity positioned above the valve core and a water inlet cavity positioned below the valve core by the valve core, the water inlet cavity is communicated with the water inlet, a valve core through hole which is communicated up and down is arranged on the valve core, the balance cavity is communicated with the water inlet cavity through the valve core through hole, an inverted cone-shaped valve sleeve sealing surface is arranged on the inner wall of the lower part of the valve sleeve, an inverted cone-shaped valve core sealing surface is arranged at the lower end of the valve core, the valve core sealing surface can be in releasable sealing and abutting contact with, but drive nut rotary threaded connection in the upper portion of valve rod, drive nut locates flange's upper portion with between the valve rod upper portion, electric actuator's shell with fixed connection can be dismantled at flange's top, electric actuator's moment of torsion output with fixed connection can be dismantled at drive nut's top.

The utility model discloses an ultrahigh pressure electric stop valve can also be:

the inner wall of the lower portion of the connecting flange is provided with an annular step groove, the small retainer ring, the first sealing assembly and the large retainer ring are sequentially arranged and embedded in the step groove from top to bottom, the small retainer ring, the first sealing assembly and the large retainer ring are detachably compressed and fixed between the pressing sleeves, the outer wall of the connecting flange is in sealed abutting contact with the outer wall of the first sealing assembly, and the inner wall of the first sealing assembly is in sealed sliding contact with the outer wall of the valve rod.

The inner wall of the upper portion of the pressing sleeve is provided with an annular second groove, the large spacer ring and the second sealing assembly are sequentially arranged from top to bottom and embedded in the second groove, detachably and tightly fixed between the large spacer ring and the pressing sleeve, the inner wall of the second sealing assembly is in sealing sliding and abutting contact with the outer wall of the valve core, a third groove used for containing a third sealing assembly is formed in the inner wall of the lower portion of the pressing sleeve, the third sealing assembly is embedded in the third groove, detachably and tightly fixed between the pressing sleeve and the valve sleeve, and the inner wall of the third sealing assembly is in sealing sliding and abutting contact with the outer wall of the valve core.

An annular fourth groove is formed in the outer wall of the upper portion of the pressing sleeve, the fourth sealing assembly is detachably fixed and embedded in the fourth groove, the outer wall of the fourth sealing assembly is in sealing and abutting contact with the inner wall of the connecting flange, a fifth groove used for containing the ring of the fifth sealing assembly is formed in the outer wall of the lower portion of the pressing sleeve, the fifth sealing assembly is embedded in the fifth groove and detachably compressed and fixed between the pressing sleeve and the valve sleeve, and the outer wall of the fifth sealing assembly is in sealing and abutting contact with the inner wall of the valve body.

The upper part of the valve body is provided with a detection hole which is through in the radial direction and is communicated with the valve cavity.

The outer wall of the lower portion of the valve sleeve is provided with a seventh groove used for containing a seventh upper sealing assembly, a small spacer ring and a seventh lower sealing assembly, the seventh upper sealing assembly, the small spacer ring and the seventh lower sealing assembly are sequentially detachably crimped between the valve sleeve and the valve body from top to bottom, and the outer walls of the seventh upper sealing assembly and the seventh lower sealing assembly are respectively sealed and abutted against the inner wall of the valve body.

And a sixth groove which is used for accommodating a guide ring and is annularly arranged is formed in the inner wall of the upper part of the valve sleeve, the guide ring is embedded in the sixth groove, and the inner wall of the guide ring is in sliding and abutting contact with the outer wall of the valve core.

Offer the keyway that is used for installing the parallel key on the outer wall at valve rod middle part, half left or half right of parallel key can be dismantled fixed and inlay and locate in the keyway, set up the logical groove that sets up from last to extending down on flange's the inner wall, half right or half left of parallel key slides and wears to locate lead to the inslot.

The transmission nut with be equipped with first bearing, second bearing and lock between flange's the inner wall, be equipped with outside bellied first boss on the outer wall at transmission nut middle part, first bearing is equipped with the top of first boss, the second bearing is located the below of first boss, the lock is female to be located the top of first bearing, the lock will first bearing and second bearing pressure-bearing fastening are in flange's upper portion.

The utility model discloses an ultrahigh pressure electric stop valve, which comprises an electric device, a valve body, a connecting flange, a valve sleeve, a pressing sleeve, a transmission nut, a valve core and a valve rod, wherein the connecting flange is pressed on the top surface of the valve body and is enclosed with a valve cavity between the valve body, the valve body is respectively provided with a water inlet and a water outlet, the pressing sleeve and the valve sleeve are pressed and fixed in the valve cavity from top to bottom in sequence, the upper surface of the pressing sleeve is sealed and propped against the lower surface of the connecting flange, the outer wall of the lower part of the pressing sleeve and the outer wall of the lower part of the valve sleeve are respectively sealed and propped against the inner wall of the valve body, the pressing sleeve and the valve sleeve divide the valve cavity into a valve sleeve inner cavity and a valve sleeve outer cavity which are mutually communicated, the valve sleeve outer cavity is communicated with the water outlet, the valve rod can be vertically movably penetrated in, the lower end of the valve rod is integrally formed or fixedly connected with the upper end of the valve core, the valve core is movably arranged in the pressing sleeve and the valve sleeve from top to bottom in a penetrating way, the outer wall of the valve core is in sliding sealing and abutting contact with the inner wall of the pressing sleeve, the inner cavity of the valve sleeve is divided into a balance cavity positioned above the valve core and a water inlet cavity positioned below the valve core by the valve core, the water inlet cavity is communicated with the water inlet, a valve core through hole which is communicated up and down is arranged on the valve core, the balance cavity is communicated with the water inlet cavity through the valve core through hole, an inverted cone-shaped valve sleeve sealing surface is arranged on the inner wall of the lower part of the valve sleeve, an inverted cone-shaped valve core sealing surface is arranged at the lower end of the valve core, the valve core sealing surface can be in releasable sealing and abutting contact with, but drive nut rotary threaded connection in the upper portion of valve rod, drive nut locates flange's upper portion with between the valve rod upper portion, electric actuator's shell with fixed connection can be dismantled at flange's top, electric actuator's moment of torsion output with fixed connection can be dismantled at drive nut's top. Therefore, when the valve is in a closed state, high-pressure water enters the water inlet cavity through the water inlet hole and then enters the balance cavity through the valve core through hole formed in the center of the valve core, and the high-pressure water filled in the balance cavity and the high-pressure water in the water inlet cavity can achieve self balance. When the valve receives an opening signal, the electric device starts to work and outputs torque, so that the transmission nut is driven to rotate, the torque of the electric device is converted into force for driving the valve rod to ascend through threaded connection by the rotating transmission nut, the valve rod drives the valve core to move upwards together, the sealing surface of the valve core is separated from the sealing surface of the valve sleeve, the valve is opened, and high-pressure water flowing into the water inlet cavity from the water inlet flows out of the water outlet through the outer cavity of the valve sleeve; when the valve receives a valve closing signal, the torque output by the electric device drives the valve rod and the valve core to move downwards, and when the sealing surface of the valve core is in sealing and abutting contact with the sealing surface of the valve sleeve, the valve is closed, and high-pressure water is blocked from flowing from the water inlet to the water outlet. Meanwhile, the high-pressure water in the balance cavity generates downward hydraulic pressure on the valve core, the high-pressure water in the water inlet cavity generates upward hydraulic pressure on the valve core, and upward and downward hydraulic acting forces can be mutually offset. In addition, the valve rod and the valve core move up and down through the driving force provided by the electric device, the electric device drives the transmission nut to rotate to realize the transmission of torque through threads, and the valve rod and the valve core are driven to move up and down, the structure is simple, the valve rod and the valve core do not need to rotate, and the rotation friction is reduced, so that the sliding sealing connection between the valve rod and the inner wall of the connecting flange and the sliding sealing connection between the valve core and the inner wall of the pressing sleeve are facilitated, the reliability of the valve is improved, the service life of the valve is prolonged, and the valve can be applied to an ultrahigh pressure water. Specifically, different electric devices can be selected according to different working conditions, trapezoidal internal threads are arranged on the inner wall of the transmission nut, trapezoidal external threads are arranged on the upper portion of the valve rod body, accordingly, threaded connection of the transmission nut and the valve rod is achieved, the trapezoidal threads are the most common transmission threads, manufacturability is good, root strength is high, and centering performance is good. Compared with the prior art, the utility model discloses an ultrahigh pressure electric stop valve has following advantage: the valve can be applied to an ultrahigh pressure water system with the working pressure of more than 100Mpa, the electric device has small size, compact structure and good sealing performance, and the reliability and the service life of the valve are improved.

Drawings

Fig. 1 is an external side view of the ultra-high pressure electric stop valve of the present invention.

Fig. 2 is the utility model relates to an inner structure schematic diagram of superhigh pressure electric stop valve.

Fig. 3 is the utility model discloses an inside seal structure partial enlargement in fig. 2 of superhigh pressure electric stop valve.

Description of the figures

1 … electric device 2 … valve body 3 … connecting flange

4 … valve sleeve 5 … pressing sleeve 6 … driving nut

7 … valve core 8 … valve rod 9 … water inlet

10 … Water Outlet 11 … valve housing outer chamber 12 … balance chamber

13 … water inlet chamber 14 … valve core through hole 15 … small retainer ring

16 … Large retainer ring 17 … first seal assembly 18 … Large spacer Ring

19 … second seal assembly 20 … third seal assembly 21 … fourth seal assembly

22 … fifth seal assembly 23 … checker hole 24 … seventh upper seal assembly

25 … Small spacer Ring 26 … seventh lower seal Assembly 27 … guide Ring

28 … Flat Key 29 … first bearing 30 … second bearing

31 … lock nut 32 … detection small hole

Detailed Description

The ultrahigh-pressure electric stop valve of the present invention will be described in further detail with reference to fig. 1 to 3.

The utility model relates to an ultrahigh pressure electric stop valve, please refer to fig. 1 to 3, which comprises an electric device 1, a valve body 2, a connecting flange 3, a valve sleeve 4, a pressing sleeve 5, a transmission nut 6, a valve core 7 and a valve rod 8, wherein the connecting flange 3 is pressed on the top surface of the valve body 2 and a valve cavity is enclosed between the valve body 2, the valve body 2 is respectively provided with a water inlet 9 and a water outlet 10, the pressing sleeve 5 and the valve sleeve 4 are pressed and fixed in the valve cavity from top to bottom in sequence, the upper surface of the pressing sleeve 5 is in sealed abutment with the lower surface of the connecting flange 3, the outer wall of the lower part of the pressing sleeve 5 and the outer wall of the lower part of the valve sleeve 4 are respectively in sealed abutment with the inner wall of the valve body 2, the pressing sleeve 5 and the valve sleeve 4 divide the valve cavity into a valve sleeve inner cavity and a valve sleeve outer cavity 11 which, the valve rod 8 is movably arranged in the center of the connecting flange 3 in an up-and-down mode, the outer wall of the valve rod 8 is in sealing sliding contact with the inner wall of the connecting flange 3, the lower end of the valve rod 8 is integrally formed or fixedly connected with the upper end of the valve core 7, the valve core 7 is movably arranged in the pressing sleeve 5 and the valve sleeve 4 in an up-and-down mode in a penetrating mode, the outer wall of the valve core 7 is in sliding sealing contact with the inner wall of the pressing sleeve 5, the valve core 7 divides the inner cavity of the valve sleeve into a balance cavity 12 positioned above the valve core 7 and a water inlet cavity 13 positioned below the valve core 7, the water inlet cavity 13 is communicated with the water inlet 9, a valve core through hole 14 which is communicated up and down is formed in the valve core 7, the balance cavity 12 is communicated with the water inlet cavity 13 through the valve core through hole 14, and a reverse, the lower end of the valve core 7 is provided with a valve core 7 sealing surface in an inverted cone shape, the valve core sealing surface and the valve sleeve sealing surface can be in releasable sealing and abutting contact, the valve sleeve outer cavity 11 and the water inlet cavity 13 are communicated in an open-close mode through the valve core sealing surface and the valve sleeve sealing surface, the transmission nut 6 is in rotatable threaded connection with the upper portion of the valve rod 8, the transmission nut 6 is arranged between the upper portion of the connecting flange 3 and the upper portion of the valve rod 8, the shell of the electric device 1 is detachably and fixedly connected with the top of the connecting flange 3, and the torque output end of the electric device 1 is detachably and fixedly connected with the top of the transmission nut 6. Therefore, when the valve is in a closed state, high-pressure water enters the water inlet cavity 13 through the water inlet hole and then enters the balance cavity 12 through the valve core through hole 14 formed in the center of the valve core 7, and the high-pressure water filled in the balance cavity 12 and the high-pressure water in the water inlet cavity 13 can achieve self-balance. When the valve receives an opening signal, the electric device 1 starts to work and outputs torque, so that the transmission nut 6 is driven to rotate, the torque of the electric device 1 is converted into force for driving the valve rod 8 to ascend through threaded connection by the transmission nut 6, the valve rod 8 drives the valve core 7 to move upwards together, the sealing surface of the valve core is separated from the sealing surface of the valve sleeve, the valve is opened, and high-pressure water flowing into the water inlet cavity 13 from the water inlet 9 flows out from the water outlet 10 through the outer cavity 11 of the valve sleeve 4; when the valve receives a valve closing signal, torque output by the electric device 1 drives the valve rod 8 and the valve core 7 to move downwards, when a valve core sealing surface is in sealing and abutting contact with a valve sleeve sealing surface, the valve is closed, high-pressure water is blocked from flowing from the water inlet 9 to the water outlet 10, meanwhile, the high-pressure water in the balance cavity 12 generates downward hydraulic pressure on the valve core 7, the high-pressure water in the water inlet cavity 13 generates upward hydraulic pressure on the valve core 7, upward and downward hydraulic acting forces can be mutually offset, the self-balancing structure can greatly reduce driving force of the valve, and the electric device 1 with smaller specification can be configured to achieve the purpose of controlling the opening and closing of the. In addition, the valve rod 8 and the valve core 7 move up and down by the driving force provided by the electric device 1, the electric device 1 drives the transmission nut 6 to rotate to realize the up-and-down movement of the valve rod 8 and the valve core 7 through thread transmission, the structure is simple, the valve rod 8 and the valve core 7 do not need to rotate, and the rotation friction is reduced, so that the sliding sealing connection between the valve rod 8 and the inner wall of the connecting flange 3 and the sliding sealing connection between the valve core 7 and the inner wall of the pressing sleeve 5 are facilitated, the reliability of the valve is improved, the service life of the valve is prolonged, and the valve can be applied to an ultrahigh pressure water system with. Specifically, different electric devices 1 can be selected according to different working conditions, trapezoidal internal threads are arranged on the inner wall of the transmission nut 6, trapezoidal external threads are arranged on the upper portion of the valve rod 8, accordingly, threaded connection of the transmission nut 6 and the valve rod 8 is achieved, the trapezoidal threads are the most common transmission threads, manufacturability is good, root strength is high, and centering performance is good. Compared with the prior art, the utility model discloses an ultrahigh pressure electric stop valve has following advantage: the valve can be applied to an ultrahigh pressure water system with the working pressure of more than 100Mpa, the electric device has small size, compact structure and good sealing performance, and the reliability and the service life of the valve are improved.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, can also be: the pressure sleeve 5 is arranged between the upper surface of the pressure sleeve and the lower surface of the connecting flange 3, between the outer wall of the lower part of the valve sleeve 4 and the inner wall of the valve body 2, and between the outer wall of the valve core 7 and the inner wall of the pressure sleeve 5, ultrahigh pressure sealing components consisting of O-shaped rings and J-shaped elastomers are hermetically connected. Therefore, the O-shaped ring and the J-shaped elastic body are combined, the O-shaped ring is pressed to deform so as to extrude the J-shaped elastic body to form a sealing effect, higher pressure can be borne, and the special combined seal is a key guarantee for improving the reliability and the service life of the valve. Meanwhile, the ultrahigh pressure sealing assembly is one-way sealed. On the basis of the technical scheme described above, it is further preferable that an annular step groove is formed in the inner wall of the lower portion of the connecting flange 3, the small retainer ring 15, the first sealing assembly 17 and the large retainer ring 16 are sequentially arranged from top to bottom and embedded in the step groove and detachably compressed and fixed between the connecting flange 3 and the pressing sleeve 5, the outer wall of the connecting flange 3 is in sealing contact with the outer wall of the first sealing assembly 17, and the inner wall of the first sealing assembly 17 is in sealing sliding contact with the outer wall of the valve rod 8. Like this, through setting up the step recess and cooperating little retaining ring 15 and big retaining ring 16, provide a installation space who holds first seal assembly 17, the installation space that this mode formed can conveniently carry out first seal assembly 17's dismantlement and installation, realizes sealed sliding connection between flange 3 and the valve rod 8 through first seal assembly 17. On the basis of the technical solution described above, it is further preferable that an annular second groove is formed on the inner wall of the upper portion of the pressing sleeve 5, the large spacer ring 18 and the second sealing assembly 19 are sequentially arranged and embedded in the second groove from top to bottom and detachably and tightly fixed between the large spacer ring 18 and the pressing sleeve 5, the inner wall of the second sealing assembly 19 is in sealing sliding abutment with the outer wall of the valve element 7, an annular third groove for accommodating a third sealing assembly 20 is formed on the inner wall of the lower portion of the pressing sleeve 5, the third sealing assembly 20 is embedded in the third groove and detachably and tightly fixed between the pressing sleeve 5 and the valve sleeve 4, and the inner wall of the third sealing assembly 20 is in sealing sliding abutment with the outer wall of the valve element 7. In this way, the second groove is arranged and cooperates with the large spacer ring 18 to enclose an installation space for accommodating the second sealing assembly 19, and the installation space formed in this way facilitates the removal and installation of the second sealing assembly 19, and likewise, the third groove cooperates with the upper surface of the valve sleeve 4 to provide an installation space for the third sealing assembly 20 and facilitates the removal and installation of the third sealing assembly 20. Meanwhile, as the second sealing assembly 19 and the third sealing assembly 20 are both one-way seals, two seals are provided to prevent the two-way flow of the liquid between the valve core 7 and the pressing sleeve 5, the second sealing assembly 19 is used for preventing the liquid in the balance cavity 12 from flowing downwards, and the third sealing assembly 20 is used for preventing the liquid in the water inlet cavity 13 from flowing upwards.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, further preferred is: an annular fourth groove is formed in the outer wall of the upper portion of the pressing sleeve 5, the fourth sealing assembly 21 is detachably fixed and embedded in the fourth groove, the outer wall of the fourth sealing assembly 21 is in sealing and abutting contact with the inner wall of the connecting flange 3, a fifth groove used for containing the ring of the fifth sealing assembly 22 is formed in the outer wall of the lower portion of the pressing sleeve 5, the fifth sealing assembly 22 is embedded in the fifth groove and detachably compressed and fixed between the pressing sleeve 5 and the valve sleeve 4, and the outer wall of the fifth sealing assembly 22 is in sealing and abutting contact with the inner wall of the valve body 2. In this way, the fourth groove cooperates with the inner wall of the connection flange 3 to form a space for mounting the fourth seal assembly 21 and the fourth seal assembly 21 is easy to mount and dismount, and likewise, the fifth groove cooperates with the upper surface of the valve sleeve 4 to form a space for mounting the fifth seal assembly 22 and the fifth seal assembly 22 is easy to mount and dismount. Meanwhile, as a gap is formed between the connecting flange 3 and the upper surface of the valve body 2, the fourth sealing assembly 21 is respectively arranged to realize the sealing connection between the pressing sleeve 5 and the connecting flange 3 so as to prevent the liquid in the balance cavity 12 from flowing out of the gap downwards, and the fifth sealing assembly 22 is arranged to realize the sealing connection between the pressing sleeve 5 and the valve body 2 so as to prevent the liquid in the water inlet cavity 13 from flowing out of the gap upwards. On the basis of the above-described technical solution, it is further preferable that the upper portion of the valve body 2 is provided with a detection hole 23 penetrating in the radial direction, and the detection hole 23 is communicated with the valve cavity. In this way, the detection hole 23 is used for detecting whether the fourth sealing assembly 21 and the fifth sealing assembly 22 fail to cause liquid leakage, and plays a role in detection and prevention. On the basis of the above-described technical solution, it is further preferable that the middle portion of the pressing sleeve 5 is provided with a small detection hole 32 penetrating in the radial direction, and the detection hole 23 is communicated with the small detection hole 32. Thus, the detection small hole 32 can communicate the inside of the pressing sleeve 5 with the detection hole 23, and can be used for detecting whether the second sealing assembly 19 and the third sealing assembly 20 are failed or not.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, further preferred is: a seventh groove for accommodating a seventh upper sealing assembly 24, a small spacer ring 25 and a seventh lower sealing assembly 26 is formed in the outer wall of the lower portion of the valve sleeve 4, the seventh upper sealing assembly 24, the small spacer ring 25 and the seventh lower sealing assembly 26 are sequentially detachably crimped between the valve sleeve 4 and the valve body 2 from top to bottom, and the outer walls of the seventh upper sealing assembly 24 and the seventh lower sealing assembly 26 are respectively in sealing abutment with the inner wall of the valve body 2. In this way, the seventh upper sealing assembly 24 and the seventh lower sealing assembly 26 are both one-way seals, so two seals are provided to prevent two-way flow in the liquid, two-way sealing of the valve body 2 and the lower portion of the valve housing 4 is realized, and the seventh upper sealing assembly 24 and the seventh lower sealing assembly 26 are separated by the small spacer ring 25.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, can also be: a sixth groove which is annularly arranged and used for accommodating a guide ring 27 is formed in the inner wall of the upper portion of the valve sleeve 4, the guide ring 27 is embedded in the sixth groove, and the inner wall of the guide ring 27 is in sliding contact with the outer wall of the valve core 7. In this way, since the valve body 7 moves up and down in the valve housing 4, the guide ring 27 is provided on the inner wall of the valve housing 4 to guide the valve body 7.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, can also be: offer the keyway that is used for installing flat key 28 on the outer wall at 8 middle parts of valve rod, flat key 28 can be dismantled fixed the inlaying on half one on the left side or half one on the right side and locate in the keyway, set up the logical groove that sets up from last to extending down on flange 3's the inner wall, flat key 28 slides on half one on the right side or half one on the left side and wears to locate lead to the inslot. Therefore, the valve rod 8 is provided with a key groove for fixedly mounting the flat key 28, the flat key 28 slides up and down in the through groove, and a thread friction pair is added, so that the valve rod 8 can move up and down, and the valve rod is prevented from rotating.

The utility model discloses an extra high pressure electric stop valve, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to 3, can also be: drive nut 6 with be equipped with first bearing 29, second bearing 30 and lock nut 31 between flange 3's the inner wall, be equipped with outside bellied first boss on the outer wall at drive nut 6 middle part, first bearing 29 is equipped with the top of first boss, second bearing 30 is located the below of first boss, lock nut 31 is located first bearing 29's top, lock nut 31 will first bearing 29 and second bearing 30 compress tightly and are fixed in flange 3's the upper portion. Like this, because valve rod 8 has two kinds of motion states upwards and downwards, drive nut 6 also can receive the power of upwards with two downward directions, drive nut 6 both will rotate and will bear the power of two upper and lower directions at the axial, can guarantee the rotatory stationarity of drive nut 6 through setting up two bearings about first bearing 29 and the second bearing 30, separate through first boss between two bearings and in order to avoid the influence each other, can compress tightly two bearings through lock nut 31, play the limiting displacement to two bearings in upper and lower direction.

The above description is only for the specific embodiments of the present invention, but not for the scope of the present invention, all equivalent changes or modifications made according to the design spirit of the present invention should be considered as falling into the scope of the present invention.

Claims

1. An ultrahigh pressure electric stop valve, its characterized in that: the valve comprises an electric device, a valve body, a connecting flange, a valve sleeve, a pressing sleeve, a transmission nut, a valve core and a valve rod, wherein the connecting flange is pressed on the top surface of the valve body and surrounds a valve cavity between the valve body, the valve body is respectively provided with a water inlet and a water outlet, the pressing sleeve and the valve sleeve are sequentially pressed and fixed in the valve cavity from top to bottom, the upper surface of the pressing sleeve is in sealing and abutting contact with the lower surface of the connecting flange, the outer wall of the lower part of the pressing sleeve and the outer wall of the lower part of the valve sleeve are respectively in sealing and abutting contact with the inner wall of the valve body, the pressing sleeve and the valve sleeve divide the valve cavity into a valve sleeve inner cavity and a valve sleeve outer,

the valve rod is movably arranged in the center of the connecting flange in an up-down mode in a penetrating mode, the outer wall of the valve rod is in sealing sliding abutting contact with the inner wall of the connecting flange, the lower end of the valve rod is integrally formed or fixedly connected with the upper end of the valve core, the valve core is movably arranged in the pressing sleeve and the valve sleeve in a penetrating mode from top to bottom in a penetrating mode, the outer wall of the valve core is in sliding sealing abutting contact with the inner wall of the pressing sleeve, the valve core divides the inner cavity of the valve sleeve into a balance cavity located above the valve core and a water inlet cavity located below the valve core, the water inlet cavity is communicated with the water inlet, a valve core through hole which is communicated up and down is formed in the valve core, and,

the inner wall of the lower part of the valve sleeve is provided with a reverse taper shaped valve sleeve sealing surface, the lower end of the valve core is provided with a reverse taper shaped valve core sealing surface, the valve core sealing surface and the valve sleeve sealing surface can be sealed and pressed against each other in a releasing way, the outer cavity of the valve sleeve is communicated with the water inlet cavity in an opening and closing way through the valve core sealing surface and the valve sleeve sealing surface,

but drive nut rotary threaded connection in the upper portion of valve rod, drive nut locates flange's upper portion with between the valve rod upper portion, electric actuator's shell with fixed connection can be dismantled at flange's top, electric actuator's moment of torsion output with fixed connection can be dismantled at drive nut's top.

2. An extra-high pressure electric shutoff valve according to claim 1, characterized in that: the valve is characterized in that an ultrahigh pressure sealing assembly consisting of an O-shaped ring and a J-shaped elastic body is hermetically connected between the upper surface of the pressing sleeve and the lower surface of the connecting flange, between the outer wall of the lower part of the valve sleeve and the inner wall of the valve body, and between the outer wall of the valve core and the inner wall of the pressing sleeve.

3. An extra-high pressure electric shutoff valve according to claim 2, characterized in that: the inner wall of the lower portion of the connecting flange is provided with an annular step groove, the small retainer ring, the first sealing assembly and the large retainer ring are sequentially arranged and embedded in the step groove from top to bottom, the small retainer ring, the first sealing assembly and the large retainer ring are detachably compressed and fixed between the pressing sleeves, the outer wall of the connecting flange is in sealed abutting contact with the outer wall of the first sealing assembly, and the inner wall of the first sealing assembly is in sealed sliding contact with the outer wall of the valve rod.

4. An extra-high pressure electric shutoff valve according to claim 2, characterized in that: the pressure cover is characterized in that an annular second groove is formed in the inner wall of the upper portion of the pressure cover, a large spacer ring and a second sealing assembly are sequentially arranged from top to bottom and embedded in the second groove, the large spacer ring is detachably compressed and fixed between the pressure cover, the inner wall of the second sealing assembly is in sealing sliding and abutting contact with the outer wall of the valve core, a third groove used for containing a third sealing assembly and formed in a ring is formed in the inner wall of the lower portion of the pressure cover, the third sealing assembly is embedded in the third groove, detachably compressed and fixed between the pressure cover and the valve sleeve, and the inner wall of the third sealing assembly is in sealing sliding and abutting contact with the outer wall of the valve core.

5. An extra-high pressure electric shutoff valve according to claim 2, characterized in that: an annular fourth groove is formed in the outer wall of the upper portion of the pressing sleeve, a fourth sealing assembly is detachably and fixedly embedded in the fourth groove, the outer wall of the fourth sealing assembly is in sealing and abutting contact with the inner wall of the connecting flange, a fifth groove used for containing a fifth sealing assembly and formed in a ring is formed in the outer wall of the lower portion of the pressing sleeve, the fifth sealing assembly is embedded in the fifth groove and detachably and tightly fixed between the pressing sleeve and the valve sleeve, and the outer wall of the fifth sealing assembly is in sealing and abutting contact with the inner wall of the valve body.

6. An extra-high pressure electric shutoff valve according to claim 5, characterized in that: the upper part of the valve body is provided with a detection hole which is through in the radial direction and is communicated with the valve cavity.

7. An extra-high pressure electric shutoff valve according to claim 2, characterized in that: the outer wall of the lower portion of the valve sleeve is provided with a seventh groove used for containing a seventh upper sealing assembly, a small spacer ring and a seventh lower sealing assembly, the seventh upper sealing assembly, the small spacer ring and the seventh lower sealing assembly are sequentially detachably crimped between the valve sleeve and the valve body from top to bottom, and the outer walls of the seventh upper sealing assembly and the seventh lower sealing assembly are respectively sealed and abutted against the inner wall of the valve body.

8. An extra-high pressure electric shut-off valve according to any one of claims 1 to 7, characterized in that: and a sixth groove which is used for accommodating a guide ring and is annularly arranged is formed in the inner wall of the upper part of the valve sleeve, the guide ring is embedded in the sixth groove, and the inner wall of the guide ring is in sliding and abutting contact with the outer wall of the valve core.

9. An extra-high pressure electric shut-off valve according to any one of claims 1 to 7, characterized in that: offer the keyway that is used for installing the parallel key on the outer wall at valve rod middle part, half left or half right of parallel key can be dismantled fixed and inlay and locate in the keyway, set up the logical groove that sets up from last to extending down on flange's the inner wall, half right or half left of parallel key slides and wears to locate lead to the inslot.

10. An extra-high pressure electric shut-off valve according to any one of claims 1 to 7, characterized in that: the transmission nut with be equipped with first bearing, second bearing and lock between flange's the inner wall, be equipped with outside bellied first boss on the outer wall at transmission nut middle part, first bearing is equipped with the top of first boss, the second bearing is located the below of first boss, the lock is female to be located the top of first bearing, the lock will first bearing and second bearing pressure-bearing fastening are in flange's upper portion.