CN113531139B

CN113531139B - Magnetic gate valve

Info

Publication number: CN113531139B
Application number: CN202110984603.XA
Authority: CN
Inventors: 毛礼国
Original assignee: Taizhou Jing'an Pipe Industry Co ltd
Current assignee: Taizhou Jing'an Pipe Industry Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2023-06-23
Anticipated expiration: 2041-08-25
Also published as: CN113531139A

Abstract

The application relates to a magnetic gate valve relates to valve technical field, and including valve body, threaded connection valve pocket on the valve body, cover establish and rotate the valve cap on the valve pocket, the valve body slip is provided with the case that slides in the valve pocket, has seted up the valve pocket that supplies the case to slide in the valve body, and the valve cap is used for driving the case to slide and closes the valve pocket and open, and valve cap and case can dismantle the connection, and the cover is equipped with sealing washer one on the circumference lateral wall of valve pocket, and sealing washer one slides to support tightly in the inside wall of valve cap. The valve sleeve is arranged, the valve sleeve and the valve body are in threaded connection and are sleeved with the valve cap, so that the valve cap, the valve sleeve and the valve body can be connected in a detachable mode, the valve core can be taken out of the valve cavity conveniently, the time for dismounting the gate valve is shortened, and therefore the valve has the advantages of convenience in assembly and maintenance of the gate valve.

Description

Magnetic gate valve

Technical Field

The application relates to the technical field of valves, in particular to a magnetic gate valve.

Background

At present, the gate valve is a gate plate of an opening and closing piece, the moving direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be regulated and throttled like a regulating valve. In order to ensure the stability of the gate valve after operation, a magnetic gate valve is used to release the lock of the gate valve rotation by attracting the magnetic member.

In general, a gate valve is equipped on some equipment which needs to be controlled to be opened and closed, while a traditional gate valve is connected through bolts and nuts in the assembly process, and bolts or nuts need to be unscrewed in the disassembly and maintenance processes so as to split each part of the gate valve.

The inventors consider that: when the gate valve is disassembled and maintained, the bolt or the nut is screwed with a long time, so that the assembly and the maintenance of the gate valve are troublesome.

Disclosure of Invention

In order to facilitate the assembly and maintenance of the gate valve, it is an object of the present application to provide a magnetic gate valve.

The magnetic gate valve provided by the application adopts the following technical scheme:

the utility model provides a magnetism gate valve, includes the valve body, threaded connection in valve pocket on the valve body, cover establish and rotate in valve cap on the valve pocket, the valve body slip be provided with slide in the case in the valve pocket, set up the valve pocket that supplies the case to slide in the valve body, the valve cap is used for driving the case to slide and closes and open the valve pocket, valve cap and case detachable connection, the cover is equipped with sealing washer one on the circumference lateral wall of valve pocket, sealing washer one slides and supports tightly in the inside wall of valve cap.

Through adopting above-mentioned technical scheme, when assembling the gate valve, place the case in the valve pocket in the valve body earlier, then overlap the valve pocket on the case, rotate the valve pocket and make valve pocket threaded connection valve body to the upper end of messenger's case is worn out from the valve pocket. The valve cap is sleeved on the valve sleeve, so that the first sealing ring is abutted against the inner wall of the valve cap, the valve cap can rotate on the valve sleeve and is limited to be separated from the valve sleeve, and the valve cap can rotate to drive the valve core to slide in the valve sleeve and the valve body to open or close the valve cavity.

When the gate valve is disassembled for maintenance, the valve cap slides in a direction far away from the valve body, so that the sealing ring I is in sliding contact with the inner wall of the valve cap until the valve cap is separated from the valve sleeve. And then the valve sleeve is rotated to gradually separate the valve body, the valve core is exposed, and the valve core is taken out of the valve cavity so as to be convenient for maintaining the valve cavity and the valve core. Therefore, through the valve sleeve, the valve sleeve and the valve body are in threaded connection and are mutually sleeved with the valve cap, so that the valve cap, the valve sleeve and the valve body are detachably connected, the valve core is conveniently taken out from the valve cavity, the time for dismounting the gate valve is shortened, and the assembly and maintenance of the gate valve are convenient.

Optionally, the case include slide in valve plate in the valve body, threaded connection in valve rod in the valve plate, set up in the valve bonnet and supply the drive slot that the valve rod upper end card was gone into, the valve rod is along with the valve bonnet is together rotated.

By adopting the technical scheme, when the valve cavity in the valve body is opened or closed, the valve cap is rotated, so that the valve rod rotates in the driving groove along with the rotation of the valve cap, and the valve plate which is in threaded connection with the valve rod slides in the valve sleeve and the valve body to open or close the valve cavity.

When the valve core is installed, the valve rod is in threaded connection with the valve plate, the valve plate is placed in the valve cavity, the valve sleeve is sleeved with the valve rod, and finally the valve cap is sleeved on the valve sleeve, so that the upper end of the valve rod is positioned in the driving groove, the valve core and the valve cap are detachably connected, and the valve core is conveniently installed in the valve sleeve and the valve cap.

Optionally, fixedly connected with spacing ring on the lateral wall that the valve rod is located the valve pocket, offer the holding tank that supplies spacing ring butt in the valve pocket, when spacing ring butt was in the holding tank, the valve rod upper end is located the drive tank, the valve rod is located the cover and is equipped with a plurality of sealing washer second on the lateral wall of spacing ring top, sealing washer second supports tightly in the inner wall of valve pocket.

By adopting the technical scheme, when the valve core is arranged in the valve cavity, the valve rod is in threaded connection with the valve plate, and the end part of the valve rod is in threaded connection with the valve plate. And then, after the valve plate is placed in the valve cavity, the valve sleeve is sleeved on the valve rod, so that the second sealing ring is in sliding contact with the inner wall of the valve sleeve, and a gap between the valve rod and the valve sleeve is sealed until the limiting ring on the valve rod is in contact with the containing groove. And then the valve sleeve is rotated to drive the valve rod to rotate together, so that the valve rod and the valve sleeve move together in a direction approaching to the valve body. After the valve sleeve is in threaded connection with the valve body, the upper end of the valve rod extends out of the valve sleeve, and then the valve cap is sleeved on the valve sleeve, so that the upper end of the valve rod is positioned in the driving groove, and the valve plate seals the valve cavity.

When the valve cavity is opened, the valve cap rotates to drive the valve rod to rotate, friction force between the second sealing ring and the valve sleeve limits the valve rod to slide downwards, so that the valve plate slides upwards in the valve body under the rotation of the valve rod, the valve cavity is opened until the valve plate abuts against the limiting ring, and the limiting ring abuts against the wall of the containing groove, so that an operator is prompted that the valve cavity is completely opened. When the valve cavity is closed, the valve bonnet is reversely rotated to drive the valve rod to rotate, the limiting ring is abutted against the accommodating groove to limit the valve rod to slide upwards, so that the valve plate slides downwards in the valve body under the rotation of the valve rod until the valve plate slides into the valve cavity to be abutted against the inner wall of the valve cavity, and the valve cavity is prompted to be completely closed by an operator.

Therefore, by arranging the limiting ring and the second sealing ring, the limiting ring is abutted to the accommodating groove, so that the valve rod can extend into the driving groove from the valve sleeve only by rotating the valve sleeve when the valve rod and the valve plate are installed, and the valve rod is limited to slide downwards under the abutting of the second sealing ring, so that the valve rod drives the valve plate to slide, and meanwhile, the valve rod is installed in the valve sleeve and the valve cap conveniently.

Optionally, the valve cap is interior to slide along perpendicular to valve plate slip direction has the gag lever post, set up the locking groove that supplies the gag lever post to slide into on the lateral wall of valve rod, be equipped with the drive on the valve cap the drive piece of gag lever post slide into locking groove.

Through adopting above-mentioned technical scheme, when opening the valve pocket, start the actuating member and drive the gag lever post and slide into the locking inslot to lock the valve rod, restrict the valve rod and slide in the valve barrel, so that the valve rod rotates and drives the valve plate and slide upward, thereby the valve plate of being convenient for can reciprocate smoothly under the rotation of valve rod and open the valve pocket.

Optionally, the driving piece includes along the valve rod direction slide in the valve barrel spacing post, rotate connect in the valve cap on the driving sleeve, set up in magnetic block on the driving sleeve, spacing post has magnetism and receives the magnetic block to attract the back and slide to the gag lever post, the one end that the gag lever post kept away from the valve rod is equipped with the guide surface of butt in spacing post, spacing post is used for the butt guide to take the gag lever post to slide into in the locking groove.

Through adopting above-mentioned technical scheme, when the drive gag lever post slides into the locking inslot, rotate the drive cover to make magnetic block and spacing post correspond, in order to make the spacing post slide into the valve cap after receiving the attraction of magnetic block. And then make spacing post butt in the guide surface drive gag lever post slide into the locking inslot to the slip of valve rod in the valve pocket is locked in the convenience.

Optionally, the valve pocket is provided with a limit groove for sliding the limit post, the valve cap is provided with a storage groove communicated with the limit groove for the limit post to slide in, the limit post slides into the limit groove under the action of gravity, and the upper end of the limit post is positioned in the storage groove.

Through adopting above-mentioned technical scheme, when the drive gag lever post slides into the locking inslot, rotate the drive cover and make magnetic block and spacing post corresponding to make the spacing post receive the attraction back of magnetic block from the whole slip of spacing inslot of accomodating of spacing groove. So that the limit post is abutted against the guide surface to drive the limit rod to slide into the locking groove to lock the sliding of the valve rod. When the magnetic block is rotated away from the limit post, the limit post slides into the limit groove under the gravity, so that the upper end of the limit post is positioned in the storage groove, and further, the rotation between the valve cap and the valve sleeve is locked, so that the on-off of the valve cavity is locked. When the valve cavity is required to be opened or closed, the magnetic block corresponds to the limit post again, so that the limit post is attracted and then slides into the storage groove completely, the locking between the valve cap and the valve sleeve is released, and the valve cap is convenient to drive the valve rod to rotate and then drive the valve plate to slide.

Optionally, fixedly connected with baffle on the lateral wall of gag lever post, set up the spout that supplies baffle and gag lever post to slide in the valve cap, baffle fixedly connected with cover is located the spring on the gag lever post, the one end fixedly connected with of baffle is kept away from to the spring is on the cell wall of spout, the spring is used for driving the gag lever post and slides away from the locking groove.

Through adopting above-mentioned technical scheme, when the locking to the valve rod is released to needs, rotate the drive sleeve to make magnetic block and spacing post break away from mutually, make the spacing post slip off the gag lever post under the gravity, the gag lever post slides in the spout after slipping off the locking groove under the restoring force effect of spring, in order to release the locking of valve rod, thereby the automatic re-setting of gag lever post in the valve cap of being convenient for.

Optionally, a third sealing ring is embedded in the upper end face of the valve body, and the third sealing ring is abutted against the bottom wall of the valve sleeve.

Through adopting above-mentioned technical scheme, when with valve pocket threaded connection on the valve body, with sealing washer three embedding valve body to make sealing washer three support tightly in the diapire of valve pocket after valve pocket threaded connection, with sealed between valve pocket and the valve body, thereby strengthen the leakproofness between valve pocket and the valve body.

In summary, the present application includes at least one of the following beneficial technical effects:

through the valve sleeve, the valve sleeve is in threaded connection with the valve body and is sleeved with the valve cap, so that the valve cap, the valve sleeve and the valve body can be detachably connected, the valve core can be conveniently taken out from the valve cavity, the time for dismounting the gate valve is shortened, and the assembly and maintenance of the gate valve are facilitated;

through setting up spacing ring, sealing washer two, utilize spacing ring butt in holding tank for only need rotate the valve pocket when valve rod and valve plate are installed can stretch into the drive tank with the valve rod from the valve pocket, and under the butt of sealing washer two, limit the valve rod and slide down, so that the valve rod drives the valve plate and slides and be convenient for the valve rod to install in valve pocket and valve bonnet simultaneously;

by arranging the driving sleeve and the magnetic block, the attraction of the magnetic block and the limiting column is utilized, so that the limiting column is abutted against the guide surface to drive the limiting rod to slide into the locking groove, and the sliding of the valve rod in the valve sleeve is locked conveniently;

through setting up spacing groove and accomodate the groove, utilize the slip of spacing post in spacing groove and accomodate the inslot, lock the rotation between valve cap and the valve pocket to attract the back with spacing post and all slide into accomodate the inslot, release the locking between valve cap and the valve pocket, thereby the valve cap is convenient for drive the valve plate and slide after the valve rod rotates;

through setting up baffle and spring, utilize the restoring force of spring to drive gag lever post and slide off the locking groove to release the locking of valve rod, thereby be convenient for the automatic re-setting of gag lever post in the valve cap.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of an embodiment of the present application for illustrating a valve cartridge.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Reference numerals illustrate: 1. a valve body; 11. a valve cavity; 12. a third sealing ring; 2. a valve sleeve; 21. a first sealing ring; 22. a receiving groove; 23. a limit groove; 231. a limit column; 3. a valve cap; 31. a driving groove; 32. a storage groove; 33. a limit rod; 331. a baffle; 332. a spring; 333. a guide surface; 34. a chute; 4. a valve core; 41. a valve stem; 411. a second sealing ring; 412. a limiting ring; 413. a locking groove; 42. a valve plate; 5. a drive sleeve; 51. a magnetic block.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a magnetic gate valve.

Referring to fig. 1 and 2, the magnetic gate valve comprises a valve body 1, a valve sleeve 2, a valve cap 3 and a valve core 4, wherein the valve body 1 is in the shape of a three-way valve, the valve sleeve 2 is in threaded connection with a valve port in the middle part of the valve body 1, the valve cap 3 is sleeved and rotationally connected with one end of the valve sleeve 2 far away from the valve body 1, the valve core 4 slides in the valve body 1 and the valve sleeve 2 along the direction perpendicular to the flow direction of fluid in the valve body 1, a valve cavity 11 for the valve core 4 to slide in and out is formed in the valve body 1, and the rotation of the valve cap 3 can drive the valve core 4 to slide to close or open the valve cavity 11.

Referring to fig. 2, a third sealing ring 12 is embedded in an end surface of one end of the valve body 1, which is in threaded connection with the valve sleeve 2, one end of the valve sleeve 2, which is close to the valve body 1, is in threaded connection with the inner wall of the valve body 1, the outer side wall of the valve sleeve 2 is flush with the outer side wall of the upper end of the valve body 1, and the end surface of the valve sleeve 2, which is in threaded connection with the valve body 1, abuts against the third sealing ring 12, so that after the valve sleeve 2 is in threaded connection with the valve body 1, the third sealing ring 12 seals a gap between the valve sleeve 2 and the valve body 1.

Referring to fig. 2, a first sealing ring 21 is sleeved on the circumferential side wall of the valve sleeve 2 far away from the valve body 1, the valve cap 3 is sleeved on the valve sleeve 2, the first sealing ring 21 is abutted against the inner side wall of the valve cap 3, the valve cap 3 and the valve sleeve 2 are sleeved through the abutting of the first sealing ring 21, and the valve cap 3 is rotated on the valve sleeve 2.

Referring to fig. 2, the valve core 4 includes a valve stem 41 rotatably coupled to the valve housing 2, a valve plate 42 sleeved on and screwed to the valve stem 41, and the valve plate 42 slides in the valve body 1 and the valve housing 2 in a direction perpendicular to a flow direction of the fluid in the valve chamber 11. The upper end of the valve cap 3 is provided with a driving groove 31 for the valve rod 41 to extend into through the valve sleeve 2, the valve rod 41 can slide into the driving groove 31 from the valve sleeve 2, the valve rod 41 cannot rotate in the driving groove 31, and the valve cap 3 rotates by clamping the valve rod 41 through the driving groove 31.

Referring to fig. 2, a plurality of second sealing rings 411 are sleeved on the circumferential side wall of the valve rod 41 in the valve sleeve 2, and the number of the second sealing rings 411 in the embodiment of the application is two, and the second sealing rings 411 are abutted against the inner side wall of the valve sleeve 2. When the gap between the valve rod 41 and the valve sleeve 2 is sealed, after the valve rod 41 is inserted upwards into the driving groove 31, the valve rod 41 can rotate in the valve sleeve 2 and limit the valve rod 41 to be separated downwards from the driving groove 31, so that after the valve cap 3 drives the valve rod 41 to rotate, the valve plate 42 slides under the rotation of the valve rod 41 to open or close the valve cavity 11.

Referring to fig. 2, the valve cavity 11 and the valve plate 42 are tapered in a direction away from the valve cap 3, so that after the valve plate 42 slides down into the valve cavity 11, the side wall of the valve plate 42 is gradually abutted against the valve cavity 11, so that the valve plate 42 slides down to seal the valve cavity 11, and the sealing performance of the valve plate 42 for sealing the valve cavity 11 is improved.

Referring to fig. 2, a limiting ring 412 is fixedly connected to a side wall of the valve rod 41, which is close to the valve plate 42, and an accommodating groove 22 for abutting after the limiting ring 412 slides upwards is formed in the valve sleeve 2. When the limiting ring 412 is abutted in the accommodating groove 22, the upper end of the valve rod 41 stretches into the driving groove 31, and the limiting ring 412 limits the valve rod 41 to slide upwards, so that the valve rod 41 is prevented from sliding upwards to push the valve cap 3 away from the valve sleeve 2, and the valve rod 41 can rotate to drive the valve plate 42 to slide downwards to close the valve cavity 11 conveniently.

Referring to fig. 2, a limit groove 23 is formed in a top wall of the valve sleeve 2 at one side of the valve rod 41, a magnetic limit post 231 is slidably moved in the limit groove 23, the limit post 231 is made of a magnetic material, the upper end of the limit post 231 is arc-shaped, and the sliding direction of the limit post 231 is the same as that of the valve plate 42. A storage groove 32 communicated with the limit groove 23 is formed in the valve cap 3, and the storage groove 32 is used for enabling the limit posts 231 to slide in completely. When the limit post 231 is positioned in the limit groove 23, the upper end of the limit post 231 is positioned in the receiving groove 32 to lock the rotational connection of the valve cap 3 and the valve housing 2.

Referring to fig. 2, the upper end of the valve cap 3 is rotatably connected with a driving sleeve 5, a magnetic block 51 is fixedly connected in the driving sleeve 5, the magnetic block 51 is exposed out of the top wall of the driving sleeve 5, and the magnetic block 51 and the limit post 231 are attracted. When the driving sleeve 5 is rotated so that the magnetic block 51 corresponds to the limit post 231, the magnetic block 51 attracts the limit post 231, so that the limit post 231 slides away from the limit groove 23 and slides into the storage groove 32 completely, and the rotation lock between the valve cap 3 and the valve sleeve 2 is released, so that the valve cap 3 is rotated to drive the valve rod 41 to rotate, and the valve plate 42 slides to open or close the valve cavity 11.

Referring to fig. 2 and 3, a stopper rod 33 is slid in the bonnet 3 in a sliding direction perpendicular to the stopper post 231, and the stopper rod 33 can be slid into the driving groove 31. The circumferential side wall of the valve rod 41 in the driving groove 31 is provided with a circle of locking groove 413 for sliding the limit rod 33 in, so as to limit the sliding of the valve rod 41 in the driving groove 31 along the sliding direction of the valve plate 42, and the limit post 231, the driving sleeve 5 and the magnetic block 51 are driving members for driving the limit rod 33 to slide into the locking groove 413.

Referring to fig. 3, a baffle 331 is fixedly connected to a side wall of the stop lever 33, a chute 34 for sliding the baffle 331 and the stop lever 33 is provided in the valve cap 3, a spring 332 is fixedly connected to a side of the baffle 331 opposite to the stop post 231, and one end of the spring 332 away from the baffle 331 is fixedly connected to a wall of the chute 34, so that the stop lever 33 slides into the chute 34 after sliding away from the locking groove 413 by the tension of the spring 332.

Referring to fig. 2 and 3, an inclined guide surface 333 is provided at one end of the limit lever 33 near the limit post 231, the guide surface 333 is abutted against the upper end of the limit post 231, and after the magnetic block 51 of the limit post 231 attracts and slides upwards, the upper end of the limit post 231 is abutted against the guide surface 333, so that the limit lever 33 slides in a direction away from the limit post 231 until the limit lever 33 is inserted into the locking groove 413. So that when the valve rod 41 rotates to drive the valve plate 42 to slide upwards, the valve rod 41 is limited to slide downwards, and the stability of the valve rod 41 for driving the valve plate 42 to slide is improved.

The implementation principle of the magnetic gate valve in the embodiment of the application is as follows: when the gate valve is assembled, the valve stem 41 and the valve plate 42 are screwed first, and then the valve plate 42 is placed in the valve chamber 11. And the valve sleeve 2 is sleeved on the upper end of the valve rod 41, so that after the valve rod 41 passes through the valve sleeve 2, the second sealing ring 411 is in sliding contact with the inner wall of the valve sleeve 2 until the limiting ring 412 is in contact with the accommodating groove 22, and the upper end of the valve rod 41 extends out of the valve sleeve 2. Then the valve sleeve 2 is rotated to drive the valve rod 41 to rotate together, so that the valve rod 41 moves downwards and simultaneously drives the valve sleeve 2 to move downwards together. Until the valve sleeve 2 abuts against the valve body 1, the valve sleeve 2 and the valve body 1 are in threaded connection along with the rotation of the valve sleeve 2, and meanwhile, the valve plate 42 is positioned in the valve cavity 11 to close the valve cavity 11.

And then the valve cap 3 is sleeved on the valve sleeve 2, so that the first sealing ring 21 on the valve sleeve 2 is abutted against the inner wall of the valve cap 3, and the valve cap 3 can be prevented from being separated from the valve sleeve 2 while the valve cap 3 can rotate on the valve sleeve 2. And then make the upper end of valve rod 41 stretch into in the drive slot 31, the magnetic block 51 on the drive sleeve 5 and the spacing post 231 on the valve cap 3 keep away from, spacing post 231 is located spacing groove 23 simultaneously, accomodate in the groove 32, spacing rod 33 is located spout 34, lock the inside valve pocket 11 on-off state of valve body 1, in order to complete the equipment of valve body 1, valve pocket 2, valve cap 3, case 4, also be convenient for take out case 4 from valve pocket 11 simultaneously, shorten the time of gate valve dismouting, thereby be convenient for the assembly and the maintenance of gate valve.

When the valve cavity 11 needs to be opened or closed, the driving sleeve 5 is rotated, so that the magnetic block 51 and the limit post 231 are aligned, the limit post 231 slides upwards to prop the limit rod 33 into the locking groove 413, the sliding of the valve rod 41 is locked, and meanwhile, the rotation locking between the valve cap 3 and the valve sleeve 2 is released, so that the valve cap 3 drives the valve rod 41 to rotate, and the valve rod 41 drives the valve plate 42 to slide, so that the valve cavity 11 is opened or closed conveniently.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A magnetic gate valve, characterized in that: the valve comprises a valve body (1), a valve sleeve (2) connected to the valve body (1) through threads, and a valve cap (3) sleeved on the valve sleeve (2) and rotated, wherein a valve core (4) sliding in the valve sleeve (2) is arranged in the valve body (1) in a sliding mode, a valve cavity (11) for the valve core (4) to slide is formed in the valve body (1), the valve cap (3) is used for driving the valve core (4) to slide to close and open the valve cavity (11), the valve cap (3) is detachably connected with the valve core (4), a first sealing ring (21) is sleeved on the circumferential side wall of the valve sleeve (2), and the first sealing ring (21) is in sliding abutting connection with the inner side wall of the valve cap (3);

the valve core (4) comprises a valve plate (42) sliding in the valve body (1) and a valve rod (41) in threaded connection with the valve plate (42), a driving groove (31) for clamping the upper end of the valve rod (41) is formed in the valve cap (3), and the valve rod (41) rotates together with the valve cap (3);

a limiting rod (33) slides in the valve cap (3) along the sliding direction perpendicular to the valve plate (42), a locking groove (413) for the sliding of the limiting rod (33) is formed in the side wall of the valve rod (41), and a driving piece for driving the limiting rod (33) to slide into the locking groove (413) is arranged on the valve cap (3);

the driving piece comprises a limit post (231) sliding in the valve sleeve (2) along the direction of the valve rod (41), a driving sleeve (5) rotationally connected to the valve cap (3) and a magnetic block (51) arranged on the driving sleeve (5), wherein the limit post (231) is magnetic and is attracted by the magnetic block (51) and then slides to the limit rod (33), one end, far away from the valve rod (41), of the limit rod (33) is provided with a guide surface (333) abutting against the limit post (231), and the limit post (231) is used for abutting against the guide surface (333) to drive the limit rod (33) to slide into the locking groove (413).

2. A magnetic gate valve according to claim 1, wherein: the valve rod (41) is located the lateral wall in valve pocket (2) and fixedly connected with spacing ring (412), offer holding tank (22) that supply spacing ring (412) butt in valve pocket (2), when spacing ring (412) butt in holding tank (22), valve rod (41) upper end is located drive tank (31), the cover is equipped with a plurality of sealing washer two (411) on the lateral wall that valve rod (41) is located spacing ring (412) top, sealing washer two (411) butt are in the inner wall of valve pocket (2).

3. A magnetic gate valve according to claim 1, wherein: the valve sleeve (2) is provided with a limit groove (23) for sliding of the limit column (231), the valve cap (3) is provided with a storage groove (32) communicated with the limit groove (23) for the limit column (231) to slide into, and the limit column (231) slides into the limit groove (23) under the gravity, and the upper end of the limit column (231) is positioned in the storage groove (32).

4. A magnetic gate valve according to claim 1, wherein: fixedly connected with baffle (331) on the lateral wall of gag lever post (33), spout (34) that supply baffle (331) and gag lever post (33) to slide have been seted up in valve cap (3), spring (332) on gag lever post (33) are located to baffle (331) fixedly connected with cover, one end fixedly connected with on the cell wall of spout (34) of baffle (331) is kept away from to spring (332), spring (332) are used for driving gag lever post (33) and slide out locking groove (413).

5. A magnetic gate valve according to claim 1, wherein: the upper end face of the valve body (1) is embedded with a third sealing ring (12), and the third sealing ring (12) is abutted against the bottom wall of the valve sleeve (2).