CN113531182A

CN113531182A - Break valve for pipeline fluid conveying control

Info

Publication number: CN113531182A
Application number: CN202110876763.2A
Authority: CN
Inventors: 龚细花
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2021-10-22

Abstract

The invention relates to the technical field of breaking valves and discloses a breaking valve for pipeline fluid conveying control, which comprises a first valve pipe and a second valve pipe, wherein the first valve pipe and the second valve pipe are fixedly connected, a positioning ring plate is arranged inside the first valve pipe, a transverse guide pipe is fixedly sleeved in the middle of the positioning ring plate, one end of the transverse guide pipe extends into the second valve pipe, a limiting plate positioned on one side of the transverse guide pipe is fixedly sleeved in the second valve pipe, and a plurality of guide grooves are formed in the outer edge of the limiting plate. The transverse conduit arranged in the first valve pipe extends to the inside of the second valve pipe, the limiting plate arranged in the second valve pipe is matched with the piston sliding ring movably sealed with the transverse conduit, when the first valve pipe and the second valve pipe are broken and separated, the amount of fluid leaked out is reduced to the minimum degree, and compared with the existing breaking valve, the fluid leaked out in the breaking valve is obviously reduced when the first valve pipe and the second valve pipe are broken.

Description

Break valve for pipeline fluid conveying control

Technical Field

The invention relates to the technical field of a breaking valve, in particular to a breaking valve for pipeline fluid conveying control.

Background

The snapping valve can prevent leakage accidents caused by accidental breakage of pipelines, and is applicable to the fields of ship-to-shore unloading, tank loading and unloading of roads and railways and other fixed and mobile fluid storage devices, such as connection between a crane pipe, a fluid conveying arm and a transport carrier.

However, a push rod is arranged between two valve ports of the existing breaking valve, the valve clack is pushed to be communicated, so that the distance between the valve ports on two sides is large, when the breaking valve is disconnected, the fluid leakage amount between the valve ports on two sides is large, the danger and the environmental pollution caused by excessive leakage of special fluid (such as gasoline) in pipeline transportation are easily caused, and the valve port is closed by the existing breaking valve through the spring pushing the valve clack.

Disclosure of Invention

The invention provides a snapping valve for pipeline fluid conveying control, which has the advantages of small leakage amount after plugging in snapping and no leakage of fluid when not fully snapping, and solves the technical problems in the background art.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: a snapping valve for pipeline fluid conveying control comprises a first valve pipe and a second valve pipe, wherein the first valve pipe and the second valve pipe are fixedly connected, a positioning ring plate is arranged inside the first valve pipe, a transverse guide pipe is fixedly sleeved in the middle of the positioning ring plate, one end of the transverse guide pipe extends into the second valve pipe, a limiting plate located on one side of the transverse guide pipe is fixedly sleeved in the second valve pipe, a plurality of flow guide grooves are formed in the outer edge of the limiting plate, a piston sliding ring located on one side of the limiting plate is movably sleeved in the second valve pipe, the inner side of the piston sliding ring is in sealing fit with the outer side of the transverse guide pipe, a sealing plate capable of moving horizontally is arranged on one side of the transverse guide pipe, two magnetic blocks capable of absorbing mutually are arranged on the side face of the sealing plate and the side face of the limiting plate, when the first valve pipe is separated from the second valve pipe, the sealing plate is moved leftwards to seal one end of the transverse guide pipe, and the piston slip ring moves right to seal the diversion trench.

Optionally, the inner diameter of the middle part of the inner cavity of the first valve tube is smaller than the inner diameter of the two sides, and one side of the inner cavity of the first valve tube, which is far away from the positioning ring plate, is provided with four limiting sliding chutes which are symmetrical with the axis of the first valve tube, a limiting sliding sleeve is arranged in the middle of the first valve pipe, a certain gap is reserved between the outer side of the limiting sliding sleeve and the inner wall of the first valve pipe, two ends of the limiting sliding sleeve are fixedly connected with four limiting fulcrum shafts, one end of each of the four limiting support shafts on one side of the limiting sliding sleeve is movably connected with the inner wall of the middle part of the limiting sliding groove, the four limit fulcrum shafts on the other side of the limit sliding sleeve are respectively fixedly sleeved with the four limit sliding chutes, the middle part of the limit sliding sleeve is movably sleeved with a middle connecting shaft, one end of the middle connecting shaft penetrates through the transverse guide pipe and is fixedly connected with the side face of the sealing plate, and the outer side of the middle connecting shaft is not contacted with the inner wall of the transverse guide pipe.

Optionally, a limiting ring plate close to one side of the positioning ring plate is fixedly sleeved in the second valve pipe, a certain distance is kept between the limiting ring plate and the positioning ring plate, a second spring is arranged between the side face of the limiting ring plate and the side face of the piston slip ring, the second spring is movably sleeved on the outer side of the transverse conduit, a push shaft located on the inner side of the second spring is fixedly connected to the side face of the piston slip ring, one end, far away from the piston slip ring, of the push shaft extends to the other side of the second valve pipe and is fixedly connected with a movable slip ring, the movable slip ring is movably sleeved with the inner wall of the second valve pipe and the outer side of the transverse conduit, one side, far away from the push shaft, of the movable slip ring is fixedly connected with a second magnetic ring, the side face of the positioning ring plate is fixedly connected with a first magnetic ring corresponding to the second magnetic ring, and opposite magnetic poles of the first magnetic ring and the second magnetic ring are opposite.

Optionally, the limiting plate is seted up flutedly towards the middle part of horizontal pipe one side, the recess is located the inboard of guiding gutter, fixedly connected with second magnetic plate in the recess, and the diameter value of shrouding is less than the internal diameter value of recess, the first magnetic plate of side fixedly connected with of shrouding, the opposite face magnetic pole of first magnetic plate and second magnetic plate is opposite.

Optionally, the diameter values of the two sides of the inner cavity of the piston slip ring are both larger than the diameter value of the middle part of the inner cavity of the piston slip ring, the inner diameter values from the two sides of the inner cavity of the piston slip ring to the middle part are uniformly reduced, and the outer diameter of the sealing plate is the same as the outer diameter of the transverse guide pipe.

The beneficial effects are as follows:

1. the stretch-break valve for pipeline fluid conveying control extends to the inside of the second valve pipe through the transverse guide pipe arranged in the first valve pipe, is matched with the limiting plate arranged in the second valve pipe and the piston sliding ring movably sealed with the transverse guide pipe, when the first valve pipe and the second valve pipe are pulled apart, the sealing plate is separated from the limiting plate, the sealing plate rapidly seals the transverse guide pipe under the action of the elastic force of the first spring, and simultaneously, the piston sliding ring is matched with the piston sliding ring to move right to seal the diversion trench, so that the amount of fluid leaked out when the first valve pipe and the second valve pipe are pulled apart is reduced to the minimum degree;

2. according to the snapping valve for controlling fluid delivery in the pipeline, when the first valve pipe and the second valve pipe are snapped and not completely separated, the piston sliding ring is not separated from the transverse guide pipe, so that the transverse guide pipe and the first valve pipe are sealed and blocked by the piston sliding ring, the problem that the valve clack is not enough in sealing stroke and cannot be closed to cause fluid leakage due to the fact that the valve clack is pushed to close a valve port by a spring in the conventional snapping valve is effectively solved, and after snapping, the valve is easy to break due to the fact that bolts are not completely broken and the first valve pipe and the second valve pipe are still connected, and the emergency disengaging and blocking effect of the snapping valve is guaranteed;

3. this pipeline fluid transport control is with breaking valve, when resumeing the intercommunication to the first valve pipe and the second valve pipe of breaking, insert the horizontal pipe in the first valve pipe in the second valve pipe, the horizontal pipe is earlier with the inboard laminating back of piston sliding ring, shrouding and horizontal pipe, piston sliding ring just separates with the limiting plate, resume first valve pipe again, the state of second valve pipe inner chamber intercommunication, the efficiency of the fluid circulation of resumeing after having improved the pipeline and having broken not only, still at the whole in-process of resumeing the fluid circulation, the effectual problem of avoiding the interior liquid leakage of pipeline.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the structural retainer plate of fig. 1 in accordance with the present invention;

FIG. 3 is a side view of a first valve tube of the structure of FIG. 1 in accordance with the present invention;

fig. 4 is a side view of the piston slide ring of the arrangement of fig. 1 in accordance with the present invention.

In the figure: 1. a first valve tube; 101. a limiting chute; 2. a second valve tube; 3. positioning the ring plate; 301. a first magnetic ring; 4. a transverse conduit; 5. the middle connecting shaft; 501. a baffle plate; 502. a first spring; 6. closing the plate; 601. a first magnetic plate; 7. a limiting plate; 701. a diversion trench; 702. a groove; 703. a second magnetic plate; 8. a confinement ring plate; 9. a second spring; 10. a piston slip ring; 11. pushing the shaft; 12. moving the slip ring; 121. a second magnetic ring; 13. a limiting sliding sleeve; 14. limiting the fulcrum shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a snapping valve for controlling fluid transportation in a pipeline includes a first valve tube 1 and a second valve tube 2, the first valve tube 1 is fixedly connected to the second valve tube 2, a sealing ring is disposed at a joint of the first valve tube 1 and the second valve tube 2, a positioning ring plate 3 is fixedly sleeved inside the first valve tube 1 and close to one side of the second valve tube 2, a transverse conduit 4 is fixedly sleeved at a middle portion of the positioning ring plate 3, one end of the transverse conduit 4 extends into the second valve tube 2, a limiting plate 7 is fixedly sleeved inside the second valve tube 2 and located at one side of the transverse conduit 4, referring to fig. 2, a plurality of guiding grooves 701 are disposed at an outer edge of the limiting plate 7, the guiding grooves 701 are symmetrical about an axis of the limiting plate 7, the guiding grooves 701 are located at an outer side of the transverse conduit 4, a piston slip ring 10 is movably sleeved inside the second valve tube 2 and an outer side of the piston slip ring 10 is in sealing fit with an inner wall of the second valve tube 2, and the inner side of the piston sliding ring 10 is in sealing fit with the outer side of the transverse conduit 4, one side of the transverse conduit 4 is provided with a sealing plate 6 capable of moving horizontally, the side surface of the sealing plate 6 and the side surface of the limiting plate 7 are provided with two magnetic blocks which attract each other, when the first valve pipe 1 is separated from the second valve pipe 2, the sealing plate 6 moves leftwards to seal one end of the transverse conduit 4, and the piston sliding ring 10 moves rightwards to seal the diversion trench 701.

Referring to fig. 3, specifically, the inner diameter of the middle of the inner cavity of the first valve tube 1 is smaller than the inner diameters of the two sides, referring to fig. 1 and 3, four limiting sliding grooves 101 are formed in one side of the inner cavity of the first valve tube 1 away from the positioning ring plate 3, the four limiting sliding grooves 101 are symmetrical with the axis of the first valve tube 1, a limiting sliding sleeve 13 is disposed in the middle of the first valve tube 1, a certain gap is reserved between the outer side of the limiting sliding sleeve 13 and the inner wall of the first valve tube 1 for allowing fluid to pass through, four limiting support shafts 14 are fixedly connected to both ends of the limiting sliding sleeve 13, one end of each of the four limiting support shafts 14 on one side of the limiting sliding sleeve 13 is movably connected to the inner wall of the middle of the limiting sliding groove 101, the four limiting support shafts 14 on the other side of the limiting sliding sleeve 13 are respectively fixedly sleeved with the four limiting sliding grooves 101, a middle connecting shaft 5 is movably sleeved on the middle of the limiting sliding sleeve 13, one end of the middle connecting shaft 5 penetrates through the transverse conduit 4 and is fixedly connected to the side of the sealing plate 6, the outer side of the middle connecting shaft 5 is not in contact with the inner wall of the transverse conduit 4, so that fluid can normally flow through the transverse conduit 4, the other end of the middle connecting shaft 5 is fixedly connected with a baffle 501, a first spring 502 is arranged between the side face of the baffle 501 and the four limiting fulcrum shafts 14, and the first spring 502 is movably sleeved on the outer side of the middle connecting shaft 5.

Under the state that the first valve tube 1 and the second valve tube 2 are normally connected, the magnetic attraction force of the magnetic block between the closing plate 6 and the limit plate 7 is larger than the elastic force of the first spring 502, at this time, the closing plate 6 is in a state of being adsorbed on the limiting plate 7, the fluid in the first valve tube 1 flows through the transverse conduit 4 and the closing plate 6, and thus, flows into the second valve pipe 2 through the guide groove 701, maintains the circulation of the fluid in the pipe, when the first valve pipe 1 and the second valve pipe 2 are pulled apart, the sealing plate 6 and the limiting plate 7 are separated, under the action of the elastic force of the first spring 502, the closing plate 6 is enabled to rapidly close the transverse conduit 4, and at the same time, by matching with the piston sliding ring 10 to move right to plug the diversion trench 701, compared with the existing breaking valve, when the first valve pipe 1 and the second valve pipe 2 are broken, the leaked fluid in the valve is broken, so that the danger and the environmental pollution caused by excessive leakage of special fluid (such as gasoline and the like) conveyed by a pipeline are avoided.

The middle part of the limiting plate 7, which faces to one side of the transverse conduit 4, is provided with a groove 702, the groove 702 is positioned at the inner side of the diversion trench 701, a second magnetic plate 703 is fixedly connected in the groove 702, the diameter value of the sealing plate 6 is smaller than the inner diameter value of the groove 702, and the side of the closing plate 6 is fixedly connected with a first magnetic plate 601, the opposite magnetic poles of the first magnetic plate 601 and the second magnetic plate 703 are opposite, when the first valve tube 1 and the second valve tube 2 are in a normal connection state, the first magnetic plate 601 is attracted to the second magnetic plate 703 by the magnetic attraction force of the second magnetic plate 703, overcomes the elastic force of the first spring 502, so that the transverse ducts 4 are in an open condition, in which the closing plate 6 is moved inside the recess 702, so that the horizontal distance between the transverse conduit 4 and the limit plate 7 is shortened, when the first valve pipe 1 and the second valve pipe 2 are broken, the amount of fluid that leaks out is minimized, further reducing the risk of fluid leakage.

A limiting ring plate 8 close to one side of the positioning ring plate 3 is fixedly sleeved in the second valve pipe 2, a certain distance is kept between the limiting ring plate 8 and the positioning ring plate 3, a second spring 9 is arranged between the side surface of the limiting ring plate 8 and the side surface of the piston sliding ring 10, the second spring 9 is movably sleeved on the outer side of the transverse conduit 4, the side surface of the piston sliding ring 10 is fixedly connected with a push shaft 11 positioned on the inner side of the second spring 9, one end of the push shaft 11 far away from the piston sliding ring 10 extends to the other side of the second valve pipe 2 and is fixedly connected with a movable sliding ring 12, the movable sliding ring 12 is movably sleeved with the inner wall of the second valve pipe 2 and the outer side of the transverse conduit 4, and one side of the movable slip ring 12 far away from the push shaft 11 is fixedly connected with a second magnetic ring 121, the side of the positioning ring plate 3 is fixedly connected with a first magnetic ring 301 corresponding to the second magnetic ring 121, and the opposite magnetic poles of the first magnetic ring 301 and the second magnetic ring 121 are opposite.

Under the normal state that the first valve pipe 1 and the second valve pipe 2 are connected, the first magnetic ring 301 on the side surface of the positioning ring plate 3 adsorbs the second magnetic ring 121, the elastic force of the second spring 9 is overcome, the piston sliding ring 10 is separated from the limiting plate 7, so that the fluid normally flows through the diversion trench 701, when the first valve pipe 1 and the second valve pipe 2 are pulled apart, the first magnetic ring 301 is separated from the second magnetic ring 121, and under the elastic force action of the second spring 9, the piston sliding ring 10 rapidly blocks the diversion trench 701, so that the fluid in the pipeline on the side, away from the first valve pipe 1, of the second valve pipe 2 is prevented from leaking.

When the first valve tube 1 and the second valve tube 2 are not completely separated by pulling, that is, the magnetic attraction between the sealing plate 6 and the transverse conduit 4 and between the first magnetic ring 301 and the second magnetic ring 121 still exists, so that the fluid between the first valve tube 1 and the second valve tube 2 is kept communicated, at this time, the piston sliding ring 10 is not separated from the transverse conduit 4, and the transverse conduit 4 and the first valve tube 1 are sealed and blocked by the piston sliding ring 10, thereby effectively avoiding the problem that the valve clack of the existing pulling valve pushes the valve clack to close the valve port by a spring, after the pulling is finished, the first valve tube 1 and the second valve tube 2 are still connected because the bolts are not completely broken, so that the valve clack has insufficient closing stroke and cannot be closed, and the fluid leaks, thereby ensuring the emergency separation and blocking effect of the pulling valve, and when the first valve tube 1 and the second valve tube 2 which are broken are communicated again, insert the horizontal pipe 4 in the first valve pipe 1 in the second valve pipe 2, after horizontal pipe 4 laminated with the inboard of piston sliding ring 10 earlier, along with the continuation of horizontal pipe 4 inserts, just make second magnetic sheet 703 overcome the elasticity of first spring 502 to the magnetic attraction of first magnetic sheet 601, the elasticity of second spring 9 is overcome to the magnetic attraction of first magnetic ring 301 to second magnetic ring 121, thereby make shrouding 6 and horizontal pipe 4 separate, piston sliding ring 10 separates with limiting plate 7, resume first valve pipe 1 again, the state of second valve pipe 2 inner chamber intercommunication, with the normal circulation of guarantee fluid, the efficiency of resuming the fluid circulation after having not only improved the pipeline and breaking, still in the whole process of resuming the fluid circulation, the effectual problem of avoiding the interior liquid leakage of pipeline.

Referring to fig. 1 and 4, the diameter values of the two sides of the inner cavity of the piston sliding ring 10 are both greater than the diameter value of the middle part of the inner cavity, the inner diameter values from the two sides of the inner cavity of the piston sliding ring 10 to the middle part are uniformly reduced, the outer diameter of the sealing plate 6 is the same as the outer diameter of the transverse conduit 4, and in the process of breaking, separating and re-communicating the first valve pipe 1 and the second valve pipe 2, the transverse conduit 4 and the sealing plate 6 can normally pass through the piston sliding ring 10 without affecting the fit sealing between the outer side of the transverse conduit 4 and the inner side of the piston sliding ring 10.

When the valve is used, one end of each of the first valve tube 1 and the second valve tube 2 is respectively communicated with a pipeline, the first valve tube 1 and the second valve tube 2 are connected through bolts or ring tripping, at the moment, the magnetic attraction of the second magnetic plate 703 to the first magnetic plate 601 overcomes the elastic force of the first spring 502, the sealing plate 6 moves to the right to be separated from the transverse conduit 4, meanwhile, the magnetic attraction of the first magnetic ring 301 to the second magnetic ring 121 overcomes the elastic force of the second spring 9, so that the piston sliding ring 10 is separated from the limiting plate 7, the fluid in the first valve tube 1 flows into the pipeline at one end of the second valve tube 2 through the transverse conduit 4 and the diversion trench 701, when the first valve tube 1 and the second valve tube 2 are pulled apart, the first valve tube 1 is separated from the second valve tube 2, the elastic force of the first spring 502 enables the sealing plate 6 to move to the left to block one end of the transverse conduit 4, the elastic force of the second spring 9 enables the piston sliding ring 10 to block the diversion trench 701, when the connection between the first valve pipe 1 and the second valve pipe 2 needs to be restored, the transverse conduit 4 in the first valve pipe 1 is inserted into the second valve pipe 2 until the first valve pipe 1 and the second valve pipe 2 are connected by flanges, the magnetic attraction of the second magnetic plate 703 to the first magnetic plate 601 overcomes the elastic force of the first spring 502, the closing plate 6 moves to the right and is separated from the transverse conduit 4, and meanwhile, the magnetic attraction of the first magnetic ring 301 to the second magnetic ring 121 overcomes the elastic force of the second spring 9, so that the first valve pipe 1 and the second valve pipe 2 are kept in a communicated state.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipeline fluid transport control is with breaking valve, includes first valve pipe (1) and second valve pipe (2), fixed connection, its characterized in that between first valve pipe (1) and second valve pipe (2): the valve is characterized in that a positioning ring plate (3) is arranged in the first valve pipe (1), a transverse guide pipe (4) is fixedly sleeved in the middle of the positioning ring plate (3), one end of the transverse guide pipe (4) extends into the second valve pipe (2), a limiting plate (7) located on one side of the transverse guide pipe (4) is fixedly sleeved in the second valve pipe (2), a plurality of flow guide grooves (701) are formed in the outer edge of the limiting plate (7), a piston sliding ring (10) located on one side of the limiting plate (7) is movably sleeved in the second valve pipe (2), the inner side of the piston sliding ring (10) is in sealing fit with the outer side of the transverse guide pipe (4), a sealing plate (6) capable of moving horizontally is arranged on one side of the transverse guide pipe (4), two magnetic blocks which attract each other are arranged on the side of the sealing plate (6) and the side of the limiting plate (7), and when the first valve pipe (1) is separated from the second valve pipe (2), the sealing plate (6) moves leftwards to seal one end of the transverse guide pipe (4), and the piston sliding ring (10) moves rightwards to seal the diversion trench (701).

2. The snapping valve for controlling the fluid transportation in a pipe according to claim 1, wherein: the inner diameter value of the middle part of the inner cavity of the first valve pipe (1) is smaller than the inner diameter values of two sides, one side of the inner cavity of the first valve pipe (1) far away from the positioning ring plate (3) is provided with four limiting sliding chutes (101), the four limiting sliding chutes (101) are symmetrical with the axis of the first valve pipe (1), the middle part of the first valve pipe (1) is provided with a limiting sliding sleeve (13), a certain gap is reserved between the outer side of the limiting sliding sleeve (13) and the inner wall of the first valve pipe (1), two ends of the limiting sliding sleeve (13) are fixedly connected with four limiting support shafts (14), one ends of the four limiting support shafts (14) on one side of the limiting sliding sleeve (13) are movably connected with the middle inner wall of the limiting sliding chute (101), the four limiting support shafts (14) on the other side of the limiting sliding sleeve (13) are respectively fixedly sleeved with the four limiting sliding chutes (101), and the middle part of the limiting sliding sleeve (13) is movably sleeved with a middle connecting shaft (5), one end of the middle connecting shaft (5) penetrates through the transverse guide pipe (4) and is fixedly connected with the side face of the sealing plate (6), and the outer side of the middle connecting shaft (5) is not contacted with the inner wall of the transverse guide pipe (4).

3. The snapping valve for controlling the fluid transportation in a pipe according to claim 1, wherein: a limiting ring plate (8) close to one side of the positioning ring plate (3) is fixedly sleeved in the second valve pipe (2), a certain distance is kept between the limiting ring plate (8) and the positioning ring plate (3), a second spring (9) is arranged between the side face of the limiting ring plate (8) and the side face of the piston sliding ring (10), the second spring (9) is movably sleeved on the outer side of the transverse guide pipe (4), the side face of the piston sliding ring (10) is fixedly connected with a push shaft (11) positioned on the inner side of the second spring (9), one end, far away from the piston sliding ring (10), of the push shaft (11) extends to the other side of the second valve pipe (2) and is fixedly connected with a movable sliding ring (12), the movable sliding ring (12) is movably sleeved with the inner wall of the second valve pipe (2) and the outer side of the transverse guide pipe (4), and one side, far away from the push shaft (11), of the movable sliding ring (12) is fixedly connected with a second magnetic ring (121), the side face of the positioning ring plate (3) is fixedly connected with a first magnetic ring (301) corresponding to the second magnetic ring (121), and opposite magnetic poles of the first magnetic ring (301) and the second magnetic ring (121) are opposite.

4. The snapping valve for controlling the fluid transportation in a pipe according to claim 1, wherein: limiting plate (7) are seted up fluted (702) towards the middle part of horizontal pipe (4) one side, recess (702) are located the inboard of guiding gutter (701), fixedly connected with second magnetic sheet (703) in recess (702), and the diameter value of shrouding (6) is less than the internal diameter value of recess (702), the first magnetic sheet (601) of side fixedly connected with of shrouding (6), the opposite face magnetic pole of first magnetic sheet (601) and second magnetic sheet (703) is opposite.

5. The snapping valve for controlling the fluid transportation in a pipe according to claim 1, wherein: the diameter values of the two sides of the inner cavity of the piston sliding ring (10) are larger than the diameter value of the middle part of the inner cavity of the piston sliding ring, the inner diameter values from the two sides of the inner cavity of the piston sliding ring (10) to the middle part are uniformly reduced, and the outer diameter of the sealing plate (6) is the same as that of the transverse guide pipe (4).