CN212107156U - Electric sleeve regulating valve - Google Patents

Abstract

The utility model discloses an electric sleeve governing valve, its technical scheme main points are including the sealing member that is located the sleeve up end, the sealing member is including the clamp of two mutual amalgamations and the sealing layer of being located on the clamp, the one end threaded connection of valve rod has the case, the case is located the valve body and with valve gap sliding connection, the valve rod wear out the one end and the indicator threaded connection of valve gap, the unable relative valve gap of indicator rotates, the electric execution can drive the valve rod rotatory, the half slot with valve rod looks adaptation is all seted up to two clamps, the sealing layer is located on the cell wall of half slot, the thickness that the sealing layer extends along half slot diameter direction is greater than or equal to the gap between sleeve and the valve rod, the problem of packing filling and changing the difficulty among the prior art, frictional force is big and the valve rod of easy wearing and tearing valve rod and there is the potential safety hazard between packing and the.

Description

Electric sleeve regulating valve

Technical Field

The utility model relates to a governing valve, more specifically the utility model relates to an electric sleeve governing valve that says so.

Background

The valve core structure of the electric sleeve regulating valve is characterized in that a sleeve and a valve clack are in clearance fit, a plurality of throttling windows are formed in the sleeve, the shape of each throttling window determines the flow characteristic of the regulating valve, and the area of each throttling window influences the flow coefficient Cv of the regulating valve. The valve is driven by receiving signals of an industrial automatic control system to change the sectional area between the valve core and the valve seat, so that the process parameters of flow, temperature, pressure and the like of a pipeline medium are controlled, and the automatic regulation function is realized.

The traditional electric sleeve regulating valve is poor in sealing performance and relatively poor in stability after installation of a valve core, and the normal working efficiency after installation is influenced.

At present, chinese patent No. CN205715744U discloses an electric sleeve regulating valve, which improves the sealing performance between a valve rod and a sealing cylinder by filling a filler in a gap between the sealing cylinder and the valve rod, and an insertion needle is disposed on a lower end surface of a filler pressing sleeve, the insertion needle is inserted into the filler as the filler pressing sleeve enters the sealing cylinder, the filler pressing sleeve and the insertion needle both press the filler, the sealing cylinder and the valve rod both tightly contact the compressed filler, further improves the sealing performance between the filler and the sealing cylinder and the valve rod, and also improves the stability of the valve rod after installation, although the aforementioned problem of poor sealing performance is solved, the electric sleeve regulating valve still has the following defects: firstly, the operation of filling the filler into the gap between the sealing cylinder and the valve rod is difficult; secondly, the packing is pressed to be in close contact with the valve rod, the static friction force between the valve rod and the packing is large, the packing cannot rotate along with the valve rod due to the insertion of the insertion needle, the valve rod is difficult to rotate relative to the packing, the driving force for driving the valve rod to rotate is increased, the valve rod is easy to abrade, and the packing is easy to generate thermal strain due to frictional heat generation in the rotating process; thirdly, when the valve rod or the filler needs to be replaced, the filler is tightly contacted with the valve rod, so that the difficulty in disassembling between the valve rod and the filler or between the filler and the sealing cylinder is easily caused, and meanwhile, related parts above the sealing cylinder need to be disassembled and assembled, so that the disassembly is complicated and time-consuming; fourthly, a plurality of inserting needles are arranged on the lower end face of the packing pressing sleeve, so that an installer can be scratched or fingers can be punctured in the assembling process, and potential safety hazards exist; fifthly, after the valve rod moves up and down for many times relative to the packing, the sealing performance between the valve rod and the packing is reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an electric sleeve governing valve that security is high when the leakproofness is good, the valve rod is convenient for rotate, be convenient for dismouting sealing member and dismouting.

In order to achieve the above purpose, the utility model provides a following technical scheme: an electric sleeve regulating valve comprises a valve body, a valve cover arranged at the upper end of the valve body, a mounting flange integrally formed with the upper end surface of the valve cover, a sleeve arranged on the upper end surface of the mounting flange, an electric actuating device positioned above the mounting flange and a valve rod connected to the end part of a piston rod of the electric actuating device, wherein the valve rod sequentially penetrates through the sleeve and the valve cover and extends into a valve cavity of the valve body, the electric sleeve regulating valve further comprises a sealing element positioned on the upper end surface of the sleeve, the sealing element comprises two clamping bodies capable of being spliced with each other and a sealing layer positioned on the clamping bodies, one end of the valve rod is in threaded connection with a valve core, the valve core is positioned in the valve body and is in sliding connection with the valve cover, one end of the valve rod penetrating through the valve cover is in threaded connection with an indicating part, the indicating part cannot rotate relative to the valve cover, the sealing layer is positioned on the groove wall of the semicircular groove, the thickness of the sealing layer extending along the diameter direction of the semicircular groove is larger than or equal to the gap between the sleeve and the valve rod, the two clamp bodies are spliced and fixedly connected together from the two sides of the valve rod respectively to enable the sealing layers on the two semicircular grooves to be spliced into a circular ring, the sealing layers are tightly jointed with the rod body of the valve rod and keep static relative to the valve rod, the lower end surfaces of the two clamp bodies and the lower end of the sealing layer are both jointed with the upper end surface of the sleeve, when the valve rod is driven by the electric execution device, the sealing element rotates along with the valve rod, and the indicating element and the valve core both move in the vertical direction relative.

As a further improvement of the present invention, two of the clamp bodies are hinged with rolling members at their lower end faces, the rolling members are in contact with the upper end face of the sleeve, the upper end face of the sleeve is integrally formed with a boss ring, the boss ring is coaxially arranged with the sleeve, the rolling members are located outside the boss ring, and when the two clamp bodies are properly spliced, the lower end of the sealing layer is spliced with the upper end face of the boss ring; when the clamp body rotates along with the valve rod, the rolling piece rolls relative to the upper end surface of the sleeve.

As a further improvement of the utility model, the rolling piece and the clamp body are hinged by a ball.

As a further improvement of the utility model, a spring which pushes the rolling piece to the outside of the clamp body is arranged in the clamp body.

As a further improvement, still the cover is equipped with the spacing lid of spacing on the sleeve up end with the clamp on the valve rod, spacing lid and sleeve fixed connection, the clamp up end articulates there is the rolling member the same rather than terminal surface down, the rolling member is inconsistent with spacing lid.

As a further improvement of the utility model, two the clamp all is provided with the connection piece, the connection piece is located the tip department that the clamp laminated each other, the through-hole that supplies the bolt to pass is seted up to the connection piece, and when two clamps amalgamation put in place, the connection piece on two clamps is relative and the coaxial setting of through-hole on the connection piece, and the bolt makes two clamps fixed connection together through the mode of bolt-up after passing the through-hole on two clamps.

As a further improvement of the utility model, two the clamp body is a semicircular ring.

As a further improvement of the utility model, the sealing layer is made of rubber.

As a further improvement, the slot wall of the semicircular groove is provided with a convex body, and the convex body is located the top of the sealing layer and is inconsistent with the upper end of the sealing layer.

The utility model has the advantages that: the valve core and the indicating piece are both in threaded connection with the valve rod, the paired clamps are arranged outside the valve rod, and the clamps and the valve rod and the sleeves are sealed through the sealing layers, the electric execution device drives the valve rod to rotate, meanwhile, the indicating piece and the valve core both rotate relative to the valve rod and move in the vertical direction relative to the valve cover, and the sealing piece rotates along with the valve rod; compared with the prior art that the packing and the valve rod rotate together, the packing and the valve rod in the prior art can avoid abrasion between the valve rod and the sealing element, avoid thermal strain between the valve rod and the sealing element, effectively prolong the service life of the valve rod and the sealing element, protect parts, and ensure that the extra output power of the electric actuator is low; the utility model discloses compare chinese patent simple structure that publication number is CN205715744U and be convenient for assemble, save the insert needle and can effectively improve operating personnel's security.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic view of the thickness of the sealing layer being equal to the gap between the sleeve and the valve stem;

fig. 4 is a left side view of the present invention;

FIG. 5 is a bottom view of the seal shown in FIG. 4, taken at B-B;

fig. 6 is a schematic view of the cartridge of fig. 4 also having sealing layers disposed on both ends.

Reference numerals: 1. a valve body; 2. a valve cover; 3. installing a flange; 4. a sleeve; 5. an electric actuator; 6. A valve stem; 7. a seal member; 8. a clip body; 9. a semicircular groove; 10. a sealing layer; 11. a rolling member; 12. a boss ring; 13. connecting sheets; 14. a through hole; 15. a limiting cover; 16. a protrusion; 17. a spring; 18. an indicator; 19. a valve core.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.

Referring to fig. 1 to 6, the electric sleeve adjusting valve of the present embodiment includes a valve body 1, a valve cover 2 mounted on an upper end of the valve body 1, a mounting flange 3 integrally formed with an upper end surface of the valve cover 2, a sleeve 4 disposed on an upper end surface of the mounting flange 3, an electric actuator 5 positioned above the mounting flange 3, a valve rod 6 connected to an end of a piston rod of the electric actuator 5, and an indicator 18 connected to the valve rod 6, wherein the valve rod 6 sequentially passes through the sleeve 4 and the valve cover 2 and extends into a valve cavity of the valve body 1, based on the existing improvement, the valve rod 6 is in threaded connection with a valve core 19, a part of the valve rod 6 located in the valve cover 2 is threaded with an external thread, a part of the valve rod 6 located in the sleeve 4 is not provided with an external thread, a part of the valve rod 6 extending out of the valve cover 2, in this way the displacements of both the indicator 18 and the spool 19 are synchronized and identical, facilitating the use for the operator; the valve core 19 is positioned in the valve cavity and is in threaded connection with the valve rod 6, the valve core 19 and the valve cover 2 are respectively provided with a sliding piece and a sliding groove which are clamped with each other, the sliding groove extends along the vertical direction, the sliding piece can move up and down along the sliding groove, the sliding piece limits the rotation of the valve core 19 relative to the valve cover 2, when the valve core 19 is installed, the valve rod 6 extends into the valve cover 2 from the lower port of the valve cover 2 and penetrates out of the sleeve 4 after the valve core 19 is connected with the valve rod 6, the sliding piece on the valve core 19 enters the sliding groove on the inner wall of; the indicating part 18 is connected with the part of the valve rod 6 penetrating through the valve cover 2 in a threaded manner, a mutual clamping sliding part and a sliding groove are respectively arranged on the indicating part 18 and a component for connecting the electric actuating device 5 and the valve cover 2 together, the indicating part 18 cannot rotate relative to the valve cover 2 and can move along the vertical direction, a rotating motor is arranged in the electric actuating device 5, after the indicating part 18 is installed in place, the end part of the valve rod 6 is fixedly connected with an output shaft of the rotating motor through a coupler, a circular through hole is arranged on a rectangular blank, the diameter of the circular through hole is larger than that of the valve rod 6, namely the rectangular blank is sleeved on the valve rod 6 through the circular through hole, the rectangular blank is cut along the diameter direction of the circular through hole to form two clamping bodies 8, the circular through hole is divided into two semicircular grooves 9, the groove walls of the semicircular grooves 9 are fixedly connected with a sealing layer 10, and, the thickness of the sealing layer 10 extending along the diameter direction of the semicircular groove 9 is larger than or equal to the gap between the sleeve 4 and the valve rod 6, namely the inner diameter formed by the sealing layer 10 is smaller than or equal to the inner diameter of the sleeve 4, in the installation process, the semicircular groove 9 of one clamp body 8 is aligned to the valve rod 6 and the clamp body 8 is moved towards the valve rod 6 until the semicircular groove 9 is clamped with the valve rod 6, the sealing layer 10 on the clamp body 8 is tightly attached to the rod body of the valve rod 6, the lower end face of the clamp body 8 is tightly attached to the upper end face of the sleeve 4, the other clamp body 8 is installed on the upper end face of the sleeve 4 from the other side of the valve rod 6 in the same way, at the moment, the two clamp bodies 8 are mutually spliced, the two semicircular grooves 9 are spliced into a circular through hole, the two sealing layers 10 are spliced into a circular ring and tightly attached to the rod body of the valve rod 6, the two clamp bodies 8 can be fixedly connected together through a bolt fastening way, after the two clamp bodies 8 are installed in place, the static friction force between the sealing layer 10 and the valve rod 6 is large, the sealing layer 10 and the valve rod 6 are kept relatively static, the clamp bodies 8 are statically arranged on the sleeve 4 and have no external force, and the static friction force between the clamp bodies 8 and the sleeve 4 is small, so when the valve rod 6 is controlled by the electric actuator 5 to rotate, the sealing element 7 rotates along with the valve rod 6 relative to the sleeve 4, and the indicator 18 and the valve core 19 both rotate relative to the valve rod 6 and simultaneously move linearly upwards or downwards; further, the blank is divided into two parts, which can reduce the processing steps and simplify the splicing operation of the clamp bodies 8 compared with the case of dividing the blank into three or more parts, so that the disassembly and assembly are convenient, and if the number of the clamp bodies 8 is simply increased under the condition of not changing the technical effect and the solved problems, the blank is replaced by the conventional means of the utility model;

compared with the prior art, the sealing mode of the packing is convenient for installing the sealing element 7, the sealing layer 10 is uniformly distributed, the sealing performance is good, the valve rod 6 is kept static relative to the sealing layer 10, the sealing performance between the valve rod 6 and the sealing layer 10 can be kept in an initial sealing state compared with the prior art that the valve rod moves relative to the packing, and the defect that the sealing performance in the prior art is poor is overcome; compared with the prior art that the packing and the valve rod 6 rotate together, the packing 7 and the valve rod 6 rotate relatively, so that abrasion between the valve rod 6 and the packing 7 can be avoided, thermal strain between the valve rod 6 and the packing 7 is avoided, the service lives of the valve rod 6 and the packing 7 are effectively prolonged, parts are protected, and the extra output power of the electric actuator 5 is low; compared with the Chinese patent with the publication number of CN205715744U, the utility model has simple structure and convenient assembly, and can effectively improve the safety of operators by omitting an insertion needle;

further optimized, referring to fig. 1 to 3, the sealing layer 10 is made of a deformable material, preferably rubber convenient for processing and forming, that is, the sealing layer 10 is a rubber layer, the rubber layer is adhered to the groove wall of the semicircular groove 9 by an adhesive, when the thickness of the sealing layer 10 is designed, the requirement that the inner diameter of a circular ring formed when the sealing layer 10 is not extruded is smaller than the inner diameter of the sleeve 4 is met, so that it can be ensured that the sealing layer 10 is firstly attached to the valve rod 6 and then extruded to deform, the upper end and the lower end of the sealing layer 10 are lengthened, when the clamp 8 is installed in place, the lower end of the sealing layer 10 blocks a gap between the clamp 8 and the sleeve 4 due to the lengthening, compared with the rigid sealing layer 10, the sealing layer 10 can be buffered and adjusted in the connection process of the sealing layer 10 and the valve rod 6, the sealing layer 10 and the valve rod 6 are protected, and the connection between the sealing layer, meanwhile, the sealing layer 10 can block the gap between the clamp body 8 and the sleeve 4 due to deformation, so that the situation that liquid flows out from the gap between the clamp body 8 and the sleeve 4 is effectively avoided, the edges of the two sealing layers 10 are tightly attached, the sealing performance is improved, the sealing layers 10 are made of rubber, the wear resistance between the sealing layers 10 and the sleeve 4 can be improved, and relative displacement between the sealing layers 10 and the sleeve 4 is facilitated;

further optimization, referring to fig. 5 to 6, both the two clamp bodies 8 are semicircular rings, and the two clamp bodies 8 are formed by cutting a circular ring into halves, so that compared with the clamp body 8 made of a rectangular blank, the material cost can be effectively reduced, and the safety can be improved without a vertex angle;

further optimization, referring to fig. 4 to 6, two connecting sheets 13 extend from the outer walls of the two clamps 8, the two connecting sheets 13 are located at the two ends of the clamps 8, through holes 14 are formed in the connecting sheets 13, the connecting sheets 13 can be arranged in parallel with the horizontal plane or can be arranged vertically with respect to the horizontal plane, and since the two sealing layers 10 can be squeezed and deformed, when the two connecting sheets 13 are arranged horizontally, the through holes 14 are difficult to align, and the bolt can be deformed by a horizontal force after passing through the two through holes 14, the two connecting sheets 13 are preferably arranged vertically with respect to the horizontal plane, when the two clamps 8 are spliced in place, the connecting sheets 13 at the two ends of the two clamps 8 are aligned with each other, the through holes 14 on the two aligned connecting sheets 13 are coaxially arranged, the two connecting sheets 13 are connected together by the bolt passing through the through holes 14 on the two connecting sheets 13 and screwing, namely, the two clamp bodies 8 are fixedly connected together, so that the design is favorable for dismounting the sealing element 7 compared with the patent with the publication number of CN205715744U, and the defect of difficult filler replacement in the prior art is overcome; further, the through hole 14 of one of the clamp bodies 8 can be designed to be a threaded hole, and the bolt firstly passes through the through hole 14 without the internal thread and then is in threaded connection with the through hole 14 with the internal thread, so that the design can save a nut, save materials and simplify the installation operation.

As an improved specific embodiment, referring to fig. 1 to 3, rolling members 11 are hinged to the lower end surfaces of two clamp bodies 8, the number of the rolling members 11 depends on actual requirements, here, taking the number of the rolling members 11 on each clamp body as an example, the rolling members 11 contact with the upper end surface of the sleeve 4, a boss ring 12 is integrally formed on the upper end surface of the sleeve 4, the boss ring 12 is coaxially arranged with the sleeve 4, the rolling members 11 are located outside the boss ring 12, the height of the rolling members 11 exposed out of the lower end surface of the clamp bodies 8 is the same as the height of the boss ring 12, the two clamp bodies 8 are placed on the upper end surface of the sleeve 4, the rolling members 11 contact with the upper end surface of the sleeve 4, after the two clamp bodies 8 are spliced, the lower end of the seal layer 10 is spliced with the upper end surface of the boss ring 12, when the valve rod 6 drives the seal 7 to rotate, the rolling members 11 roll relative to the upper end surface of the sleeve 4, and the static friction between the clamp bodies 8 and the sleeve 4 is converted into rolling friction, the friction between the sleeve 4 and the clamp body 8 is greatly reduced, and the clamp body 8 is favorable for moving relative to the sleeve 4;

further, the inner diameter of the boss ring 12 is different from the inner diameter of the sleeve 4 in a number relationship, and it is preferable that the inner diameter of the boss ring 12 is equal to the inner diameter of the sleeve 4, which is advantageous for simplifying the processing steps;

further optimization, referring to fig. 1 to 3, the rolling member 11 and the clamp body 8 are hinged by a ball, the rolling member 11 is a ball, a ball groove for limiting the ball is formed in the clamp body 8, the ball is partially exposed out of the ball groove, and when the clamp body 8 moves radially or circumferentially relative to the sleeve 4, the ball can roll relative to the sleeve 4;

further optimization, referring to fig. 1 to 3, the height of the rolling member 11 exposed outside the clip body 8 is designed to be the same as the height of the boss ring 12, which is difficult to process, and thus the problem that the processed clip body 8 is not matched with the boss ring 12 is easily caused, in order to make up for the above-mentioned defects, a groove for accommodating the spring 17 is formed in the clip body 8, based on the previous optimization embodiment, the groove for accommodating the spring 17 is communicated with the ball groove, the spring 17 is placed in the clip body 8, the ball is then placed in the ball groove, the ball is abutted against one end of the spring 17, the spring 17 deforms and pushes the ball toward the outside of the clip body 8, when the clip body 8 is placed on the sleeve 4, the ball is contacted with the upper end surface of the sleeve 4, the lower end of the sealing layer 10 is attached to the boss ring 12, the height of the ball exposed outside the clip body 8 is consistent with the height of the boss ring 12 through the deformation of the spring 17, and the design is such that the, the device can be suitable for the boss rings 12 with different heights, the application range is enlarged, the processing difficulty is effectively reduced, and the production is convenient;

to explain, in the absence of external force, the maximum elastic force of the spring 17 should be smaller than the gravity of the clamp 8, so as to avoid the situation that the spring 17 pushes the clamp 8 upwards to separate the lower end of the sealing layer 10 from the upper end surface of the boss ring 12, and ensure the sealing property between the sealing layer 10 and the boss ring 12.

As an improved specific embodiment, referring to fig. 1 and 4, since the sealing element 7 is fixedly connected with the valve rod 6 only through the sealing layer 10, the liquid pressure in the valve body 1 is strong and generates upward thrust to the sealing layer 10, and the sealing element 7 slides upward relative to the valve rod 6 over time, so as to cause the problem of liquid leakage caused by separation of the sealing layer 10 from the boss ring 12, in order to make up for the above-mentioned defects, the valve rod 6 is further sleeved with a limit cover 15 for limiting the clamp body 8 on the upper end surface of the sleeve 4, the limit cover 15 is fixedly connected with the sleeve 4, the upper end surface of the clamp body 8 is hinged with a rolling element 11 identical to the lower end surface thereof, the rolling element 11 is in contact with the limit cover 15, the structure of the limit cover 15 can be identical to that of the packing gland in the patent with the publication No. CN205715744U, the limit cover 15 is fixedly connected with the sleeve 4 through a bolt, and the limit cover 15 can be lifted upward during, the clamp body 8 is inserted and spliced in place from the lower part of the limiting cover 15, then the limiting cover 15 presses the clamp body 8 downwards, the limiting cover 15 is firstly supported and then the clamp body 8 is detached in the detaching process, the design of the limiting cover 15 assists the positioning of the clamp body 8, the clamp body 8 is prevented from sliding upwards, the stability of the whole structure is ensured, and meanwhile, the problem that the clamp body 8 is jacked up due to the fact that the elastic force of the spring 17 exceeds the gravity of the clamp body 8 can be avoided;

further, the reason why the connecting piece 13 is designed horizontally or vertically, and preferably the connecting piece 13 is vertically arranged relative to the horizontal plane in the latter embodiment, is that, in combination with the limiting cover 15, if the connecting piece 13 is horizontally arranged relative to the horizontal plane, the height of the limiting cover 15 to be pulled up is large, or a hole is formed in the limiting cover 15 to facilitate the screwing operation of the bolt; if the connecting piece 13 is vertically arranged relative to the horizontal plane, the dismounting of the sealing element 7 can be completed only by unscrewing the bolt on the limiting cover 15 and unscrewing the bolt on the sealing element 7 from one side, and the former is more complicated in operation or more in processing steps compared with the latter, so the latter is preferred.

As an improved specific embodiment, when the liquid in the valve body 1 generates an upward thrust on the sealing layer 10 after the sealing layer 10 is deformed by extrusion, the sealing layer 10 cannot be deformed any more, and the sealing layer 10 tends to move upward relative to the clip 8, and over time, the adhesive capacity between the sealing layer 10 and the clip 8 decreases to cause the sealing layer 10 to slide upward relative to the clip 8, the sealing layer 10 is separated from the boss ring 12, and the problem of liquid leakage occurs,

in order to compensate for the above problems, referring to fig. 1 to 3, a protrusion 16 is disposed on a groove wall of the semicircular groove 9, the protrusion 16 is integrally formed with the semicircular groove 9, the protrusion 16 is located above the sealing layer 10 and abuts against an upper end of the sealing layer 10, and the protrusion 16 is designed to limit the sealing layer 10, so as to prevent the sealing layer 10 from moving upwards, effectively improve the stability of the sealing layer 10, and indirectly ensure the sealing property between the sealing layer 10 and the boss ring 12.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides an electronic sleeve governing valve, including valve body (1), install in valve gap (2) of valve body (1) upper end, with valve gap (2) up end integrated into one piece's mounting flange (3), set up in sleeve (4) of mounting flange (3) up end, be located electronic final controlling element (5) of mounting flange (3) top, connect in valve rod (6) of the tailpiece of the piston rod department of electronic final controlling element (5) and connect indicator (18) on valve rod (6), in valve rod (6) passed sleeve (4) and valve gap (2) in proper order and stretched into the valve pocket of valve body (1), its characterized in that: the sealing device is characterized by further comprising a sealing element (7) located on the upper end face of the sleeve (4), wherein the sealing element (7) comprises two clamping bodies (8) capable of being spliced with each other and a sealing layer (10) located on the clamping bodies (8), one end of the valve rod (6) is in threaded connection with a valve core (19), the valve core (19) is located in the valve body (1) and is in sliding connection with the valve cover (2), one end, penetrating out of the valve cover (2), of the valve rod (6) is in threaded connection with an indicating piece (18), the indicating piece (18) cannot rotate relative to the valve cover (2), the electric execution device (5) can drive the valve rod (6) to rotate, the two clamping bodies (8) are provided with semicircular grooves (9) matched with the valve rod (6), the sealing layer (10) is located on the groove walls of the semicircular grooves (9), and the thickness, extending along the diameter direction of the sealing layer (10) is larger than or equal to the gap between the sleeve (4) and the valve rod (6, the two clamp bodies (8) are spliced together and fixedly connected together from two sides of the valve rod (6) respectively to enable the sealing layers (10) on the two semicircular grooves (9) to be spliced into a circular ring, the sealing layers (10) are tightly attached to the rod body of the valve rod (6) and keep static relative to the valve rod (6), the lower end faces of the two clamp bodies (8) and the lower end face of the sealing layer (10) are attached to the upper end face of the sleeve (4), when the valve rod (6) is driven by the electric execution device (5), the sealing element (7) rotates along with the valve rod (6), and the indicating piece (18) and the valve core (19) move in the vertical direction relative to the valve rod (6).

2. An electrically actuated sleeve regulator valve as defined in claim 1 wherein: the lower end faces of the two clamp bodies (8) are hinged with rolling parts (11), the rolling parts (11) are in contact with the upper end face of the sleeve (4), a boss ring (12) is integrally formed on the upper end face of the sleeve (4), the boss ring (12) and the sleeve (4) are coaxially arranged, the rolling parts (11) are located on the outer side of the boss ring (12), and when the two clamp bodies (8) are spliced in place, the lower end of the sealing layer (10) is attached to the upper end face of the boss ring (12); when the clamp body (8) rotates along with the valve rod (6), the rolling piece (11) rolls relative to the upper end surface of the sleeve (4).

3. An electrically actuated sleeve regulator valve as defined in claim 2 wherein: the rolling piece (11) is hinged with the clamp body (8) by adopting a ball.

4. An electrically actuated sleeve regulator valve as defined in claim 3 wherein: a spring (17) which pushes the rolling piece (11) to the outside of the clamp body (8) is also arranged in the clamp body (8).

5. An electric sleeve regulator valve according to claim 2 or 3 or 4 wherein: still the cover is equipped with on valve rod (6) and keeps spacing lid (15) on sleeve (4) up end with clamp (8), spacing lid (15) and sleeve (4) fixed connection, clamp (8) up end articulates there is rolling member (11) the same rather than terminal surface down, rolling member (11) are inconsistent with spacing lid (15).

6. An electrically actuated sleeve regulator valve as defined in claim 1 or 2 or 3 or 4 wherein: two clamp (8) all are provided with connection piece (13), connection piece (13) are located the tip department that clamp (8) laminated each other, through-hole (14) that supply the bolt to pass are seted up in connection piece (13), when two clamp (8) amalgamations target in place, connection piece (13) on two clamps (8) are relative and through-hole (14) coaxial setting on connection piece (13), and the bolt makes two clamps (8) fixed connection together through bolt-up's mode behind through-hole (14) on two clamps (8).

7. An electrically actuated sleeve regulator valve as defined in claim 1 or 2 or 3 or 4 wherein: the two clamp bodies (8) are both semicircular rings.

8. An electrically actuated sleeve regulator valve as defined in claim 1 or 2 or 3 or 4 wherein: the sealing layer (10) is made of rubber.

9. An electrically actuated sleeve regulator valve as defined in claim 1 or 2 or 3 or 4 wherein: and a bulge (16) is arranged on the wall of the semicircular groove (9), and the bulge (16) is positioned above the sealing layer (10) and is abutted against the upper end of the sealing layer (10).

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