CN220378924U - Quick-opening and-closing electric emergency cut-off valve - Google Patents

Abstract

An electric emergency cut-off valve capable of being opened and closed rapidly is arranged between a valve rod and a support, a rapid opening and closing mechanism is sleeved on the valve rod, an opening and closing guide groove is formed in the support, the rapid opening and closing mechanism comprises a thrust bearing sleeve and a small opening control assembly, the thrust bearing sleeve is provided with a power connecting end, the small opening control assembly is provided with an opening and closing guide end, a power source is connected with the power connecting end to drive the rapid opening and closing mechanism and the valve rod to rotate, the opening and closing guide end stretches into the opening and closing guide groove, the thrust bearing sleeve is connected with the small opening control assembly and drives the opening and closing guide end of the small opening control assembly to reciprocate in the opening and closing guide groove, and the valve rod is driven to open and close the valve cavity in a manner of matching the thrust bearing sleeve with the small opening control assembly, so that the valve has a rapid opening and closing function and is convenient to open and close the valve.

Description

Quick-opening and-closing electric emergency cut-off valve

Technical Field

The utility model relates to the technical field of shut-off valves, in particular to a quick-opening and quick-closing electric emergency shut-off valve.

Background

The sealing of the emergency cut-off valve installed and used on the current pipeline is realized by closely attaching the sealing surfaces at the two ends of the ball in the valve cavity with the left and right sealing parts of the valve body. In order to enable the valve to have a sealing function, the traditional ball body is required to be tightly attached to the valve seat by means of strong locking force to achieve the sealing function, after the traditional ball body reaches a sealing state, the moment of opening and closing is too large, most of the balls with larger calibers are required to be additionally provided with auxiliary devices to be operated, meanwhile, in the whole-course opening and closing operation, the sealing parts of the ball body and the valve seat are severely worn, and the valve is often leaked due to the defect, so that the normal use of the valve is affected. In order to enable normal production, enterprises need to replace or maintain frequently, a large amount of resources are wasted, and a large potential safety hazard is generated, and because the large-caliber ball valve is large in torque, quick opening and closing are difficult to realize. At present, large-caliber emergency stop valves are generally lacking in the markets of valves at home and abroad, particularly electric large-caliber emergency stop valves are lacking, the requirement that the valve closing time of the emergency stop valves is required to be less than 10 seconds in the national standard cannot be met due to the fact that the opening and closing stroke of the large-caliber valves is long, and the valve closing time of the electric valves is slower due to the special transmission mode of the electric valves.

Disclosure of Invention

In view of this, the present utility model provides a quick opening and closing electric emergency shut-off valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an electronic emergency cut-off valve of quick start-up, includes valve body, valve rod, support and power supply, the support sets up on the valve body, the power supply sets up on the support, form the valve pocket in the valve body, set up the case in the valve pocket, the valve rod sets up in the support, the one end of valve rod passes the support and stretches into the valve pocket and the case is connected, set up quick opening and close mechanism between valve rod and the support, quick opening and close mechanism cover is established on the valve rod, set up on the support and open and close the guide way, quick opening and close mechanism includes thrust bearing bush and little aperture control assembly, thrust bearing bush has the power link, little aperture control assembly has the guide end of opening and close, the power supply is connected with the power link and is driven quick opening and close mechanism and valve rod and rotate, the guide end of opening and close in the guide way of guide way, just the in-process that the guide end moved drives the valve rod control valve core and opens and close control.

Preferably, the small opening control assembly comprises a clutch and a fixed pin, the thrust bearing table and the clutch are sleeved on the valve rod in an annular structure, the power connecting end is arranged at the top of the thrust bearing sleeve, one end of the fixed pin extends into the bracket through an opening and closing guide groove and penetrates through the clutch and the valve rod, and the opening and closing guide end is arranged at one side of the fixed pin away from the clutch.

Preferably, the opening and closing guide groove is in an L-shaped structure, the opening and closing guide groove is provided with a vertical groove part and a horizontal groove part, the vertical groove part is communicated with the horizontal groove part, the vertical groove part is provided with a fully-closed side, the horizontal groove part is provided with a fully-opened side, when the opening and closing guide end is positioned on the fully-opened side of the horizontal groove part, the thrust bearing sleeve is connected with the small opening control assembly, and when the opening and closing guide end is positioned on the fully-closed side of the vertical groove part, the thrust bearing sleeve is separated from the small opening control assembly.

Preferably, the thrust bearing sleeve is provided with a jaw connecting part, a trapezoidal thread part and a radial strip connecting part, the jaw connecting part is arranged at the power connecting end of the thrust bearing sleeve, the trapezoidal thread part is arranged at the inner ring side of the thrust bearing sleeve, the radial strip connecting part is arranged at the bottom end of the thrust bearing sleeve, the clutch is arranged at the bottom end of the thrust bearing sleeve, the top end of the clutch is provided with a clutch connecting part corresponding to the radial strip connecting part, and the clutch connecting part is connected with the radial strip connecting part.

Preferably, the radial strip-shaped connecting part is a plurality of protruding blocks or groove structures which are formed at the bottom end of the thrust bearing sleeve and are arranged at equal intervals, the clutch connecting part is a plurality of protruding blocks or groove structures corresponding to the radial strip-shaped connecting part, and the radial strip-shaped connecting part and the clutch connecting part are in meshed connection.

Preferably, a valve core expansion mechanism is arranged between the valve rod and the valve core, the valve core expansion mechanism comprises an expansion block arranged at the bottom end of the valve rod and a rotating arm arranged on the valve core, the rotating arm comprises a first rotating arm and a second rotating arm, a rotating hole is formed in the expansion block, a first expansion hole and a second expansion hole which are used for connecting the first rotating arm and the second rotating arm are respectively formed in two sides of the upper portion of the valve core, a rotating shaft is arranged among the rotating hole, the first expansion hole and the second expansion hole and is connected through the rotating shaft, and one ends, far away from the expansion block, of the first rotating arm and the second rotating arm are respectively connected with two sides of the upper portion of the valve core in a rotating mode.

Preferably, the valve core is provided with an inner groove at the center, the top end of the inner groove is provided with a notch, and one end of the expansion block extends into the inner groove through the notch to be connected with the valve core.

Preferably, the movable valve seat assembly is arranged in the valve cavity and comprises a movable valve seat and a spring seat, the two sides of the valve cavity are provided with a medium runner, one side of the medium runner, which is close to the valve core, is concaved inwards to form a valve seat mounting part, the spring seat and the movable valve seat are both arranged on the valve seat mounting part of the medium runner, the spring seat is arranged on one side, which is far away from the valve core, of the valve seat, a spring groove is formed in one side, which is far away from the valve seat, of the spring seat, springs are arranged in the spring groove, and two ends of each spring respectively prop against the groove wall of the spring groove and the valve seat mounting part.

Preferably, the spring seat is provided with a first inclined surface, the movable valve seat is provided with a second inclined surface, a trapezoid sealing ring is arranged between the first inclined surface and the second inclined surface, and the first inclined surface and the second inclined surface are respectively in sealing connection with sealing surfaces on two sides of the trapezoid sealing ring.

The utility model has the beneficial effects that: according to the utility model, the conversion coordination of the straight stroke and the angular stroke is achieved by using the form of coordination of the thrust bearing sleeve and the small opening control assembly, so that the valve has a quick opening and closing function, the opening and closing control of the valve are convenient, about 95% of medium cutoff can be completed within 0.5 seconds, the valve is completely closed within 2-10 seconds, and the quick cutting can be realized when an emergency condition occurs on a working condition site, the application of the technology can effectively shorten the opening and closing stroke and the opening and closing time of the valve, and the market blank that the electric valve cannot be used as an emergency cutting valve is filled due to the quick closing performance of the emergency cutting valve, so that a powerful guarantee is provided for the safety production of enterprises; through setting up radial strip connecting portion and the clutch connecting portion of corresponding structure in thrust bearing sleeve's bottom and clutch's bottom, radial strip connecting portion is a plurality of strip lug or strip recess structures that are radial shape and arrange, and clutch connecting portion is the structure that corresponds radial strip connecting portion, and such structure setting can increase the frictional force between clutch and the thrust bearing sleeve, avoids appearing the thrust bearing sleeve that the frictional force between the two is not enough to lead to can't drive clutch 16 and rotate to influence the work of opening and close of valve.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a medium flow channel fully open state structure of the utility model;

FIG. 2 is a schematic diagram of a medium flow channel cut-off 95% state structure of the utility model;

FIG. 3 is a schematic diagram of the medium flow channel fully-closed state structure of the utility model;

FIG. 4 is an enlarged view at A of FIG. 1;

FIG. 5 is an enlarged view of portion B of FIG. 2;

FIG. 6 is a schematic diagram showing the position of the opening and closing guide end in the opening and closing guide groove in the fully opened state of the medium flow passage;

FIG. 7 is a schematic diagram showing the position of the opening and closing guide end in the opening and closing guide groove in the state that the medium flow passage is cut by 95%;

FIG. 8 is a schematic diagram showing the position of the opening and closing guide end in the opening and closing guide groove in the medium flow passage fully closed state;

fig. 9 is a schematic view of a radial strip connection structure.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model will be further described with reference to the drawings.

The utility model provides the following technical scheme:

as shown in fig. 1-9, the utility model discloses a quick opening and closing electric emergency cut-off valve, which comprises a valve body 1, a valve rod 2, a support 3 and a power source 4, wherein the support 3 is arranged on the valve body 1, the power source 4 is arranged on the support 3, a valve cavity 5 is formed in the valve body 1, a valve core 6 is arranged in the valve cavity 5, the valve rod 2 is arranged in the support 3, one end of the valve rod 2 penetrates through the support 3 to extend into the valve cavity 5 and be connected with the valve core 6, a quick opening and closing mechanism 7 is arranged between the valve rod 2 and the support 3, the quick opening and closing mechanism 7 is sleeved on the valve rod 2, an opening and closing guide groove 8 is arranged on the support 3, the quick opening and closing mechanism 7 comprises a thrust bearing sleeve 9 and a small opening control assembly 10, the thrust bearing sleeve 9 is provided with a power connecting end 11, the small opening control assembly 10 is provided with a guide end 12, the power source 4 is connected with the power connecting end 11 to drive the quick opening and closing mechanism 7 and the valve rod 2 to rotate, the guide end 12 stretches into the opening and closing guide groove 8, the thrust bearing sleeve 9 is connected with the small opening control assembly 10 to drive the small opening and closing control assembly 2 to move in the guide groove 12 to control the valve cavity 6 to reciprocate in the guide groove 8. Specifically, in the design, the power source 4 is a driving motor, the valve rod 2 comprises a valve rod 2 and a lower valve rod 2, the thrust bearing sleeve 9 is arranged at the upper part of the valve rod 2, the thrust bearing sleeve 9 is provided with a jaw structure 13 connected with the power source 4, the power source 4 is provided with an output shaft 14, the output shaft 14 is matched with the jaw structure 13 so as to drive the thrust bearing sleeve 9 to rotate clockwise, and the radial strip-shaped connecting part 15 at the bottom of the thrust bearing sleeve 9 can be matched with the clutch connecting part 17 of the clutch 16 in the small opening control assembly 10 so as to drive the clutch 16 and the valve rod 2 to rotate, in the process of rotating the clutch 16, a fixing pin 20 on the clutch 16 reciprocates in the opening and closing guide groove 8, when the state of the valve is converted to the fully-closed state, the opening and closing control end of the small opening control assembly 10 is driven by the rotation of the clutch 16, when the opening and closing guide end 12 moves to the position where the leftmost side of the transverse groove part 18 intersects with the vertical groove part 19, 95% of the medium flow passage 38 in the valve is cut off, in the process that the valve medium flow passage 38 is cut off from the full opening to 95% of the medium flow passage 38, the fixing pin 20 only makes a straight stroke movement in the transverse groove part 18, the radial strip-shaped connecting part 15 of the thrust bearing sleeve 9 and the clutch connecting part 17 of the clutch 16 are always tightly attached, and when the rest 5% of the medium flow passage 38 needs to be closed to enable the valve to reach the full closing state, at this time, since the clockwise rotation of the opening and closing guide end 12 of the fixing pin 20 is limited by the groove wall at one side of the vertical groove part 19, the clockwise rotation of the fixing pin 20 is converted into downward movement in the vertical groove part 19, when the opening and closing connecting end of the fixed pin 20 moves towards the full closing side 25 of the lower part of the vertical groove part 19 at the upper part of the vertical groove part 19, the clutch 16 is gradually separated from the thrust bearing sleeve 9 under the drive of the fixed pin 20, and the valve core 6 is gradually attached to the valve seat, so that the full closing state of the valve is achieved; when the valve is in a completely closed state, the electric actuating mechanism outputs power to drive the thrust bearing sleeve 9 to do anticlockwise rotation, the anticlockwise rotation of the thrust bearing sleeve 9 drives the fixed pin 20, the valve rod 2, the expansion block 22 and the rotating arm 23 to do ascending motion through the trapezoid thread part 21 on the thrust bearing sleeve 9, and at the moment, the ball is forced to shrink under the traction action of the connecting position of the bottom of the valve and the valve core, so that the sealing surface of the valve seat is separated from the sealing surface of the movable valve seat 24, and the valve is decompressed and releases 5% of medium flow. When the fixed pin 20 rises to the transverse groove of the L-shaped opening and closing guide groove, the clutch 16 and the thrust bearing sleeve 9 are meshed together again through the radial strip-shaped connecting part 15 and the clutch connecting part 17 to form a whole, so that the rising motion of the clutch 16, the fixed pin 20, the valve rod 2, the expansion block 22 and the rotating arm 23 is converted into anticlockwise rotation motion, meanwhile, the valve core 6, the pull rod and the auxiliary valve rod 2 also do rotation motion, when the series of parts rotate anticlockwise by 90 degrees, the opening and closing guide end 12 of the fixed pin 20 contacts with the right side groove wall of the transverse groove part 18 of the L-shaped opening and closing guide groove 8, at the moment, the system transmits a stopping instruction to the electric actuating mechanism to stop the electric actuating mechanism, the valve is completely opened and the rest 95% of medium flow is released, and a working cycle is completed; the design achieves the conversion matching of the straight stroke and the angular stroke by adopting the form that the thrust bearing sleeve 9 is matched with the small opening degree control assembly 10, and in the process of the straight stroke, the fixed pin 20 of the small opening degree control assembly 10 is changed from transverse movement into longitudinal movement from the transverse groove part 18 to the vertical groove part 19 of the opening and closing guide groove 8, and has one angular stroke in the process, namely, the straight stroke movement in the transverse groove part 18 is changed into the angular stroke movement, and finally, the straight stroke movement is continued to the vertical groove part 19. Specifically, the design can cut off about 95% of medium within 0.5 seconds, complete closing of the valve can be completed within 2-10 seconds, and quick cutting off can be realized when an emergency occurs on the working condition site.

Further, the small opening control assembly 10 includes a clutch 16 and a fixed pin 20, the thrust bearing sleeve 9 and the clutch 16 are both sleeved on the valve rod 2 in an annular structure, the power connection end 11 is arranged at the top of the thrust bearing sleeve 9, one end of the fixed pin 20 extends into the bracket 3 through the opening and closing guide groove 8 and penetrates through the clutch 16 and the valve rod 2, and the opening and closing guide end 12 is arranged at one side of the fixed pin 20 far away from the clutch 16. Specifically, in this embodiment, by setting the small opening control assembly 10, the thrust bearing sleeve 9 can drive the small opening control assembly 10 to control the valve rod and the valve core, so as to realize the opening and closing control of different openings of the valve, and realize quick opening or quick closing.

Further, the opening and closing guide groove 8 is in an L-shaped structure, the opening and closing guide groove 8 is provided with a vertical groove portion 19 and a horizontal groove portion 18, the horizontal groove portion 18 is transversely arranged on the support, the vertical groove portion 19 is longitudinally arranged on the support, the horizontal groove portion 18 is arranged on one side of the top of the vertical groove portion 19 in the anticlockwise rotation direction, the vertical groove portion 19 is communicated with the horizontal groove portion 18, the vertical groove portion 19 is provided with a fully closed side 25, the horizontal groove portion 18 is provided with a fully opened side 26, when the opening and closing guide end 12 is located at the fully opened side 26 of the horizontal groove portion 18, the thrust bearing sleeve 9 is connected with the small opening control assembly, and when the opening and closing guide end 12 is located at the fully closed side 25 of the vertical groove portion 19, the thrust bearing sleeve 9 is separated from the small opening control assembly 10. Specifically, by setting the opening and closing guide slot 8 to have an L-shaped structure with a horizontal slot portion 18 and a vertical slot portion 19, the fixing pin 20 is changed from a transverse movement in the opening and closing guide slot 8 to a longitudinal movement, in the process of the transverse movement, the fixing pin 20 drives the valve rod 2 to rotate, so that the valve in a fully opened state is closed to a large extent, the closing amplitude is 95% of a medium flow passage, when the fixing pin 20 moves to the vertical slot portion 19 to longitudinally move in the vertical slot portion 19, in the process that the opening and closing connecting end of the fixing pin 20 moves towards the fully closed side 25 of the lower portion of the vertical slot portion 19 at the upper portion of the vertical slot portion 19, the clutch 16 is gradually separated from the thrust bearing sleeve 9 under the driving of the fixing pin 20, and the valve core 6 and the valve seat are gradually attached, so that the fully closed state of the valve is achieved.

Further, the thrust bearing sleeve 9 is provided with a jaw connecting portion 27, a trapezoidal thread portion 21 and a radial strip connecting portion 15, the jaw connecting portion 27 is arranged on the power connecting end 11 of the thrust bearing sleeve 9, the trapezoidal thread portion 21 is arranged on the inner ring side of the thrust bearing sleeve 9, the radial strip connecting portion 15 is arranged at the bottom end of the thrust bearing sleeve 9, the clutch 16 is arranged at the bottom end of the thrust bearing sleeve 9, the clutch connecting portion 17 corresponding to the radial strip connecting portion 15 is arranged at the top end of the clutch 16, and the clutch connecting portion 17 is connected with the radial strip connecting portion 15. Specifically, in this embodiment, when the power source 4 drives the thrust bearing sleeve 9 to rotate, the radial strip-shaped connecting portion 15 on the thrust bearing sleeve 9 is matched with the clutch connecting portion 17 of the clutch, so as to drive the clutch to rotate, and the fixing pin on the clutch rotates in the opening and closing guide groove at the same time.

Further, the radial strip-shaped connecting portion 15 is a plurality of protruding blocks or grooves formed at the bottom end of the thrust bearing sleeve 9 and arranged at equal intervals, the clutch connecting portion 17 is a plurality of protruding blocks or grooves corresponding to the radial strip-shaped connecting portion 15, and the radial strip-shaped connecting portion 15 and the clutch connecting portion 17 are in meshed connection. Specifically, in this embodiment, through setting up radial strip connecting portion 15 and clutch connecting portion 17 of corresponding structure at the bottom of thrust bearing housing 9 and the bottom of clutch 16, radial strip connecting portion 15 is a plurality of strip lug or strip recess structures that are radial shape and arrange, and clutch connecting portion 17 is the structure of corresponding radial strip connecting portion 15, and such structure setting can increase the frictional force between clutch 16 and thrust bearing housing 9, avoids appearing the thrust bearing housing 9 that frictional force is not enough between the two and can't drive clutch 16 rotation to influence the work of opening and close of valve. Further, in this embodiment, the contact area between the clutch 16 and the thrust bearing sleeve 9 can be increased by the arrangement of the radial strip-shaped connecting portion 15 and the clutch connecting portion 17, so that the thrust bearing sleeve 9 can still connect and cooperate the clutch and the thrust bearing sleeve without affecting the normal opening and closing of the valve when one or more of the radial strip-shaped connecting portions 15 is worn in the process of driving the clutch 16 to rotate for a long time.

Further, a valve core expansion mechanism 28 is disposed between the valve rod 2 and the valve core 6, the valve core expansion mechanism 28 includes an expansion block 22 disposed at the bottom end of the valve rod 2 and a rotating arm 23 disposed on the valve core 6, the rotating arm 23 includes a first rotating arm 29 and a second rotating arm 30, a rotating hole 31 is formed in the expansion block 22, two sides of the upper portion of the valve core 6 are respectively provided with a first expansion hole 32 and a second expansion hole 33 for connecting the first rotating arm 29 and the second rotating arm 30, a rotating shaft 34 is disposed between the rotating hole 31, the first expansion hole 32 and the second expansion hole 33, and the rotating shaft 34 is connected with one ends, far away from the expansion block 22, of the first rotating arm 29 and the second rotating arm 30 are respectively connected with two sides of the upper portion of the valve core 6 in a rotating manner. Further, an inner groove 35 is formed in the center of the valve core 6, a notch is formed in the top end of the inner groove 35, and one end of the expansion block 22 extends into the inner groove 35 through the notch to be connected with the valve core 6. Specifically, in this embodiment, in order to ensure that the valve core 6 can be tightly attached to the movable valve seat 24 when the valve rod 2 is driven to descend by the clutch 16, the valve core expansion mechanism 28 is disposed between the valve core 6 and the valve rod 2, the valve core expansion mechanism 28 can push the valve core 6 to be attached to and sealed with the movable valve seat 24 faster by pushing two sides of the inner groove 35 in the center of the valve core 6 to two sides of the valve core 6 through the first rotating arm 29 and the second rotating arm 30 in the descending process of the valve rod 2, and when the valve rod 2 ascends, the first rotating arm 29 and the second rotating arm 30 retract two sides of the valve core 6 towards the center of the inner groove 35 under the driving of the valve rod 2, so that the valve core 6 is separated from the movable valve seat 24 faster to realize the quick opening effect.

Further, a movable valve seat assembly 36 is disposed in the valve cavity 5, the movable valve seat assembly 36 includes a movable valve seat 24 and a spring seat 37, two sides of the valve cavity 5 are provided with a medium flow passage 38, one side of the medium flow passage 38, which is close to the valve core 6, is concaved inwards to form a valve seat mounting portion 39, the spring seat 37 and the movable valve seat 24 are both disposed on the valve seat mounting portion 39 of the medium flow passage 38, the spring seat 37 is disposed on one side, which is far away from the valve core 6, of the valve seat 37, a spring groove 40 is disposed on one side, which is far away from the valve seat, of the spring seat 37, a spring 41 is disposed in the spring groove 40, and two ends of the spring 41 respectively prop against the groove wall of the spring groove 40 and the valve seat mounting portion 39. Specifically, in this embodiment, by designing the movable valve seat 24 and the spring seat 37, the movable valve seat 24 can move on the valve seat mounting portion 39 under the action of the spring seat 37, when the valve core 6 contacts with the movable valve seat 24 and presses the movable valve seat 24, the movable valve seat 24 can move towards the spring seat 37, so that the pressure brought by the valve core 6 is reduced, the service lives of the movable valve seat 24 and the valve core 6 are prolonged, and after the valve core 6 is separated from the movable valve seat 24, the movable valve seat 24 returns under the elastic potential energy of the spring 41.

Further, the spring seat 37 has a first inclined surface 42, the movable valve seat 24 has a second inclined surface 43, a trapezoidal seal ring 44 is provided between the first inclined surface 42 and the second inclined surface 43, and the first inclined surface 42 and the second inclined surface 43 are respectively in sealing contact with both side seal surfaces of the trapezoidal seal ring 44. Specifically, in the present embodiment, by providing the first inclined surface 42 and the second inclined surface 43 on the spring seat 37 and the movable valve seat 24, respectively, a seal groove having a trapezoid cross section is formed between the first inclined surface 42 and the second inclined surface 43, so that the trapezoid seal ring 44 can be disposed in the seal groove to be in sealing contact with the spring seat 37 and the movable valve seat 24, and in this design, the contact area between the seal ring and the spring seat 37 and the movable valve seat 24 can be increased by adopting the trapezoid seal ring 44, thereby improving the sealing performance.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides an electronic emergency cut-off valve of quick start-stop, includes valve body, valve rod, support and power supply, the support sets up on the valve body, the power supply sets up on the support, form the valve pocket in the valve body, set up the case in the valve pocket, the valve rod sets up in the support, the one end of valve rod passes the support and stretches into the valve pocket and be connected with the case, its characterized in that: the quick opening and closing mechanism is arranged between the valve rod and the support, the quick opening and closing mechanism is sleeved on the valve rod, the support is provided with an opening and closing guide groove, the quick opening and closing mechanism comprises a thrust bearing sleeve and a small opening control assembly, the thrust bearing sleeve is provided with a power connection end, the small opening control assembly is provided with an opening and closing guide end, the power source is connected with the power connection end to drive the quick opening and closing mechanism and the valve rod to rotate, the opening and closing guide end stretches into the opening and closing guide groove, the thrust bearing sleeve is connected with the small opening control assembly and drives the opening and closing guide end of the small opening control assembly to reciprocate in the opening and closing guide groove, and the valve rod control valve core is driven to open and close the valve cavity in the moving process of the opening and closing guide end.

2. The quick opening and closing electric emergency shut off valve of claim 1, wherein: the small opening control assembly comprises a clutch and a fixed pin, the thrust bearing sleeve and the clutch are sleeved on the valve rod in an annular structure, the power connection end is arranged at the top of the thrust bearing sleeve, one end of the fixed pin stretches into the bracket through an opening and closing guide groove and penetrates through the clutch and the valve rod, and the opening and closing guide end is arranged on one side of the fixed pin away from the clutch.

3. The quick opening and closing electric emergency shut off valve of claim 1, wherein: the guide slot is L-shaped structure, the guide slot has a vertical slot part and a horizontal slot part, the vertical slot part is communicated with the horizontal slot part, the vertical slot part is provided with a fully-closed side, the horizontal slot part is provided with a fully-opened side, the thrust bearing sleeve is connected with the small opening control assembly when the guide end is positioned on the fully-opened side of the horizontal slot part, and the thrust bearing sleeve is separated from the small opening control assembly when the guide end is positioned on the fully-closed side of the vertical slot part.

4. The quick opening and closing electric emergency shut off valve of claim 2, wherein: the thrust bearing sleeve is provided with a jaw connecting part, a trapezoidal thread part and a radial strip connecting part, wherein the jaw connecting part is arranged at the power connecting end of the thrust bearing sleeve, the trapezoidal thread part is arranged on the inner ring side of the thrust bearing sleeve, the radial strip connecting part is arranged at the bottom end of the thrust bearing sleeve, the clutch is arranged at the bottom end of the thrust bearing sleeve, the top end of the clutch is provided with a clutch connecting part corresponding to the radial strip connecting part, and the clutch connecting part is connected with the radial strip connecting part.

5. The quick opening and closing electric emergency shut off valve of claim 4, wherein: the radial strip-shaped connecting parts are of a plurality of protruding blocks or groove structures which are formed at the bottom end of the thrust bearing sleeve and are arranged at equal intervals in a radial mode, the clutch connecting parts are of a plurality of protruding blocks or groove structures corresponding to the radial strip-shaped connecting parts, and the radial strip-shaped connecting parts are connected with the clutch connecting parts in a meshed mode.

6. The quick opening and closing electric emergency shut off valve of claim 1, wherein: the valve is characterized in that a valve core expansion mechanism is arranged between the valve rod and the valve core, the valve core expansion mechanism comprises an expansion block arranged at the bottom end of the valve rod and a rotating arm arranged on the valve core, the rotating arm comprises a first rotating arm and a second rotating arm, rotating holes are formed in the expansion block, first expansion holes and second expansion holes for connecting the first rotating arm and the second rotating arm are formed in two sides of the upper portion of the valve core respectively, rotating shafts are arranged among the rotating holes, the first expansion holes and the second expansion holes and are connected through the rotating shafts, and one ends, far away from the expansion block, of the first rotating arm and the second rotating arm are respectively connected with two sides of the upper portion of the valve core in a rotating mode.

7. The quick opening and closing electric emergency shut off valve of claim 6, wherein: an inner groove is formed in the center of the valve core, a notch is formed in the top end of the inner groove, and one end of the expansion block penetrates through the notch and stretches into the inner groove to be connected with the valve core.

8. The quick opening and closing electric emergency shut off valve of claim 1, wherein: the valve is characterized in that a movable valve seat assembly is arranged in the valve cavity and comprises a movable valve seat and a spring seat, two sides of the valve cavity are provided with a medium runner, one side of the medium runner, which is close to the valve core, is concaved inwards to form a valve seat installation part, the spring seat and the movable valve seat are both arranged on the valve seat installation part of the medium runner, the spring seat is arranged on one side, which is far away from the valve core, of the valve seat, a spring groove is formed in one side, which is far away from the valve seat, of the spring seat, springs are arranged in the spring groove, and two ends of each spring respectively prop against the groove wall of the spring groove and the valve seat installation part.

9. The quick opening and closing electric emergency shut off valve of claim 8, wherein: the spring seat is provided with a first inclined surface, the movable valve seat is provided with a second inclined surface, a trapezoid sealing ring is arranged between the first inclined surface and the second inclined surface, and the first inclined surface and the second inclined surface are respectively in sealing connection with sealing surfaces on two sides of the trapezoid sealing ring.