CN210860030U

CN210860030U - Magnetic lock valve

Info

Publication number: CN210860030U
Application number: CN201921473110.4U
Authority: CN
Inventors: 祝文耀; 严荣杰; 黄水清; 蔡小飞
Original assignee: Ningbo Jklong Precision Work Co ltd
Current assignee: Ningbo Jklong Precision Work Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-06-26
Anticipated expiration: 2029-09-05

Abstract

The utility model provides a magnetism lock valve belongs to control flap's technical field. A magnetic lock valve comprises a valve body, a valve cover, a valve rod, a gate plate, a gland, a magnetic lock assembly and a key assembly; the utility model discloses a be provided with the magnetic lock subassembly between valve gap and gland, the last magnetic unit through the magnetic lock subassembly realizes locking and unblock to valve gap and gland with lower magnetic unit, has realized compressing tightly and restoring to the throne through magnetic unit, has avoided setting up the spring and has compressed tightly and reset the magnetic lock valve assembly that brings inconveniently, and the function expression is limited and influence the problem of valve performance, has improved the market competition of magnetic lock valve, more does benefit to the popularization and the popularization of product.

Description

Magnetic lock valve

Technical Field

The utility model relates to a control flap's technical field specifically is to relate to a magnetism lock valve door.

Background

In order to prevent the valve from being opened and closed randomly, a magnetic lock valve is used as a control valve, and the purpose of opening and closing a closing piece in the control valve is achieved by the acting force of magnetic force, so that the use requirement is met.

At present, magnetic lock valves in the market all adopt magnetic steel and a spring as the structures of main parts, the opening and closing of the valve are realized by the principle that like poles of the magnetic steel repel each other or opposite poles attract each other, and the spring is used as an element for pressing and resetting. However, when the existing magnetic lock valve uses a small spring, the spring is easy to tangle and inconvenient to assemble, and when the spring is made of 304 stainless steel materials, the spring is easy to be magnetized under the action of strong magnetism, so that the function of the spring is influenced, and the performance of the valve is influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the present invention aims to provide a magnetic lock valve, in order to set up an upper magnetic group and a lower magnetic group with the same magnetism of the opposite surfaces, the repulsion of the magnets is realized, so that under the condition of no key assembly influence, the upper magnetic group can be locked under the action of the lower magnetic group, the functions of compressing and resetting are realized, the valve is not required to be provided with a spring, the defects caused by the spring as a compressing and resetting functional part are overcome, and the problems of inconvenient assembly, limited function expression and influence on the service performance of the valve of the existing magnetic lock valve are effectively solved.

The specific technical scheme is as follows:

a magnetic lock valve comprises a valve body, a valve cover, a valve rod, a flashboard and a gland, wherein the valve body is provided with a flow passage, a convex neck communicated with the flow passage is arranged on the outer wall of the valve body in a protruding mode, the valve cover is arranged on the convex neck in a covering mode, the gland is arranged on one side, away from the convex neck, of the valve cover, the flashboard is arranged in the flow passage and located in the area corresponding to the convex neck, one end of the valve rod penetrates through the convex neck and then is connected with the flashboard, the other end of the valve rod extends out of the convex neck and then is inserted into the valve cover and extends into the gland, the magnetic lock valve has the characteristics that a magnetic,

the magnetic lock assembly comprises an upper magnetic group and a lower magnetic group corresponding to the upper magnetic group, the upper magnetic group is arranged in the gland, the lower magnetic group is arranged in the valve cover and is positioned at one end close to the gland, and the magnetism of the surfaces of the upper magnetic group and the lower magnetic group opposite to each other is the same;

the key subassembly is independent structure, and the key subassembly includes helping hand pole and opens the latch fitting, opens and is provided with the magnet of unblanking that corresponds with last magnetic assembly on the latch fitting to unblanking magnet and last magnetic assembly each other just right the magnetism of face the same, the magnetism of unblanking the magnet is greater than the magnetism of last magnetic assembly, and the helping hand pole transversely wears to locate on the latch fitting.

In the magnetic lock valve, the end face of the end, provided with the gland, of the valve cover is provided with the positioning hole, and the lower magnetic group is embedded in the positioning hole.

The magnetic lock valve comprises a valve cover, a valve rod, a positioning hole, an upper magnetic group, an inner groove and a valve rod, wherein the end face of one end, facing the valve cover, of the pressing cover is provided with the accommodating groove, the upper end of the valve cover is inserted into the accommodating groove, the bottom of the accommodating groove is provided with the limiting hole corresponding to the positioning hole, the upper magnetic group is embedded into the limiting hole, the center of the bottom of the accommodating groove is provided with the inner groove.

The magnetic lock valve comprises a valve cover, wherein the outer wall of one end of the valve cover, provided with a circle of first grooves, the side wall of a containing groove of the valve cover, provided with a circle of second grooves corresponding to the first grooves, the direction of the notches of the first grooves and the second grooves is right opposite, check rings are arranged between the first grooves and the second grooves, the inner sides of the check rings are clamped in the first grooves, and the outer sides of the check rings are clamped in the second grooves.

The magnetic lock valve comprises a steel magnet and a wrapping layer, wherein the upper magnetic assembly is of a steel ladle magnetic structure, the wrapping layer wraps the outside of the steel magnet, and the wrapping layer is a steel sheet.

The magnetic lock valve comprises a valve rod, a blocking platform, a sealing groove and a valve rod top, wherein the valve rod comprises a thread portion, the blocking platform, the sealing groove and the valve rod top, one end of the thread portion is connected with a flashboard, the other end of the thread portion is provided with the blocking platform, the cross section of the blocking platform is larger than the cross section of the thread portion, meanwhile, one side, deviating from the thread portion, of the blocking platform is provided with the sealing groove, one side, deviating from the blocking platform, of the sealing groove is the valve.

In the magnetic lock valve, the top of the valve rod is arranged in a rectangular shape, and the inner groove of the gland is also arranged in a rectangular shape.

The magnetic lock valve comprises a valve body, wherein the valve body is provided with a valve cover, the valve cover is provided with a valve rod, the valve rod is provided with two sealing grooves, a sealing ring is arranged between the sealing grooves and the inner wall of an inner cavity of the valve cover, and the sealing ring is an O-shaped ring.

The magnetic lock valve comprises a valve rod, a valve cover, a baffle ring, a valve cover and a valve cover, wherein the valve rod is provided with a connecting part which is located between a threaded part and a baffle table, the baffle ring is arranged in a conical mode, one end, with a small cross section, of the baffle ring abuts against the baffle table, and one end, with a large cross section, of the baffle ring abuts against a step which protrudes from the inner wall of an inner.

The magnetic lock valve is characterized in that an unlocking groove is formed in one end face of the unlocking piece, a magnet corresponding to the upper magnetic group is arranged on the side of the unlocking piece and located beside the unlocking groove, the unlocking magnet is embedded in the magnet placing hole, and meanwhile, a boss corresponding to the unlocking groove is arranged on the end face of the gland deviating from one end of the valve rod.

The positive effects of the technical scheme are as follows:

the magnetic lock valve is characterized in that the upper magnetic group is arranged in the gland, the lower magnetic group corresponding to the upper magnetic group is arranged in the valve cover, the unlocking magnet corresponding to the upper magnetic group is arranged on the unlocking piece of the key assembly, the magnetism of the face, opposite to the upper magnetic group, of the upper magnetic group is the same as that of the face, opposite to the upper magnetic group, of the unlocking magnet, and the magnetism of the unlocking magnet is larger than that of the upper magnetic group, so that when the key assembly is used, the upper magnetic group is pressed into the positioning hole of the valve cover through the unlocking magnet, the gland cannot be locked by the upper magnetic group, the gland is rotated by the unlocking piece, the valve rod is further driven to rotate, the opening and closing of the valve are controlled, under the condition that the key assembly does not act, the upper magnetic group is pressed into the limiting hole of the gland under the action of the lower magnetic group, the upper end of the upper magnetic group is positioned in the limiting hole, and, thereby being limited on the valve cap with the gland, having avoided the rotation of valve rod, having realized the locking to the valve, having eliminated and need adopt the spring just can realize compressing tightly and the problem of locking on the current valve, also eliminated the problem that adopts the spring structure to bring for the assembly is more convenient, and the function expression is more complete, and valve performance is better.

Drawings

Fig. 1 is a structural diagram of an embodiment of a magnetic lock valve according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a view angle structure diagram of the gland according to a preferred embodiment of the present invention;

fig. 4 is a structural diagram of another view angle of the gland according to a preferred embodiment of the present invention.

In the drawings: 1. a valve body; 11. a flow channel; 12. a raised neck; 2. a valve cover; 21. positioning holes; 22. a first groove; 3. a valve stem; 31. a threaded portion; 32. blocking the platform; 33. a sealing groove; 34. the top of the valve stem; 321. a baffle ring; 331. a seal ring; 4. a shutter plate; 5. a gland; 51. a containing groove; 52. a limiting hole; 53. an inner tank; 54. a second groove; 55. a boss; 6. a magnetic lock assembly; 61. an upper magnetic group; 62. a lower magnetic group; 611. magnetic steel; 612. a wrapping layer; 7. a key assembly; 71. a booster lever; 72. opening the locking piece; 721. an unlocking magnet; 722. unlocking the lock groove; 723. a magnet placement hole; 8. and a retainer ring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 4, but the following contents are not intended to limit the present invention.

Fig. 1 is a structural diagram of an embodiment of a magnetic lock valve according to the present invention; fig. 2 is an enlarged view of a portion a in fig. 1. As shown in fig. 1 and 2, the magnetic lock valve provided in this embodiment includes: valve body 1, valve gap 2, valve rod 3, flashboard 4 and gland 5, valve body 1 is provided with runner 11, flow channel is provided for the fluid through runner 11, and, the salient neck 12 that communicates with runner 11 that is provided with on the outer wall of valve body 1, the salient neck 12 upper cover is equipped with valve gap 2, and one side that valve gap 2 deviates from salient neck 12 is provided with gland 5, it is provided with flashboard 4 to be located the region that corresponds with salient neck 12 in runner 11 simultaneously, the one end of valve rod 3 is passed and is connected with flashboard 4 behind the salient neck 12, the other end of valve rod 3 stretches out and inserts in the valve gap 2 and extend to gland 5 after the salient neck 12 is outer, make a tip of valve rod 3 can be connected with gland 5, thereby when making on valve gap 2 go up the pressure lid 5, can drive valve rod 3 through gland 5 and rotate, thereby drive flashboard 4 rotates, the realization is to the control.

Specifically, be provided with magnetic lock subassembly 6 in the junction of valve gap 2 and gland 5, realize gland 5 through magnetic lock subassembly 6 compressing tightly and locking on valve gap 2, guaranteed not to have contained the spring in the locking subassembly, effectively avoided the spring as compressing tightly and the problem that the structure that resets brought for the function expression is more complete, thereby has improved the performance of valve. In addition, be provided with key subassembly 7 outside gland 5, key subassembly 7 and gland 5 are the cooperation structure for when needs are controlled the valve, locate gland 5 with key subassembly 7 cover on, realize the rotation to gland 5, and after control is accomplished, need with key subassembly 7 pull out gland 5 can, improved the security of valve, avoided opening and close at will of valve.

Specifically, the magnetic lock assembly 6 includes an upper magnetic set 61 and a lower magnetic set 62 corresponding to the upper magnetic set 61, the upper magnetic set 61 is disposed in the gland 5, and a lower end of the upper magnetic set 61 extends to the bonnet 2, the lower magnetic set 62 is disposed in the bonnet 2 and is located at an end close to the gland 5, and the magnetic properties of the surfaces of the upper magnetic set 61 and the lower magnetic set 62 facing each other are the same, so that under the condition that the key assembly 7 is not matched, the upper magnetic set 61 is under the action of the lower magnetic set 62, the upper end of the upper magnetic set 61 is clamped into the gland 5, the lower end of the upper magnetic set 61 is still clamped in the bonnet 2, and thus the positions of the bonnet 2 and the gland 5 are limited by the upper magnetic set 61, so as to lock the gland 5, thereby locking the valve is realized, opening of the valve is prevented, safety and reliability of the valve are improved, while the key assembly 7 is matched, the upper end of the upper magnetic set 61 is pressed into the bonnet 2 from the gland 5, thereby make gland 5 ability free rotation to realized the control to the valve is opened and close, realized promptly through two magnetic structure of last magnetic unit 61 and lower magnetic unit 62 promptly and compressed tightly and reset the effect of locking, avoided setting up the problem that the spring brought, structural design is more reasonable.

Specifically, the key assembly 7 is an independent structure, the key assembly 7 includes a power-assisted lever 71 and an unlocking piece 72, the unlocking piece 72 is provided with an unlocking magnet 721 corresponding to the upper magnetic group 61, the opposite surfaces of the unlocking magnet 721 and the upper magnetic group 61 have the same magnetism, the magnetism of the unlocking magnet 721 is greater than that of the upper magnetic group 61, the power-assisted lever 71 transversely penetrates through the unlocking piece 72, when the unlocking piece 72 is matched with the gland 5, the unlocking magnet 721 can push the upper magnetic group 61 in the gland 5 to one side of the valve cover 2, so that the locking between the valve cover 2 and the gland 5 is released, the valve opening and closing can be controlled by rotating the gland 5, in addition, the control on the valve can be more time-saving and labor-saving by arranging the power-assisted lever 71, and the structural design is more reasonable.

More specifically, set up locating hole 21 on the terminal surface of valve gap 2 one end that is provided with gland 5, the direction that sets up of locating hole 21 is parallel with the axial of valve rod 3 to magnetic unit 62 under the embedded being equipped with of locating hole 21, make locating hole 21 can provide installation space for magnetic unit 62 down, also can regard as the dodging space when going up magnetic unit 61 and moving down simultaneously, structural design is more reasonable.

Fig. 3 is a view angle structure diagram of the gland according to a preferred embodiment of the present invention. As shown in fig. 1, 2 and 3, an end surface of the gland 5 facing one end of the bonnet 2 is provided with a receiving groove 51, an upper end of the bonnet 2 is inserted into the receiving groove 51, so that the gland 5 is sleeved outside the bonnet 2 through the receiving groove 51, thereby providing a structural basis for the gland 5 to rotate on the bonnet 2, in addition, a bottom of the receiving groove 51 is provided with a limiting hole 52 corresponding to the positioning hole 21, the positioning holes 21 and the limiting holes 52 are consistent in number and are in one-to-one correspondence, and the upper magnetic group 61 is embedded in the limiting hole 52, so that the upper magnetic group 61 can move downwards from the inside of the limiting hole 52 to the inside of the positioning hole 21 under the action of the unlocking magnet 721, thereby unlocking the valve, in addition, the upper magnetic group 61 can be pushed into the limiting hole 52 of the gland 5 under the action of the lower magnetic group 62 without the action of the unlocking magnet 721, so that the upper portion of the upper magnetic group 61 is clamped in the limiting hole 52, the lower part of the upper magnetic group 61 is clamped in the positioning hole 21, so that the position of the gland 5 on the end cover is limited, and the valve is locked. Meanwhile, an inner groove 53 is formed in the center of the bottom of the accommodating groove 51, and one end of the valve rod 3 extending into the gland 5 is inserted into the inner groove 53, so that the valve rod 3 can be connected with the gland 5, the valve rod 3 can be driven to rotate when the gland 5 is rotated, and the valve can be opened and closed.

More specifically, set up the first recess 22 of round on the outer wall of the one end that sets up gland 5 on valve gap 2, set up the second recess 54 that the round corresponds with first recess 22 on the groove lateral wall of storage tank 51 of gland 5, and the notch direction of first recess 22 and second recess 54 is just right, and with be provided with retaining ring 8 between first recess 22 and the second recess 54, the inboard card of retaining ring 8 is located in first recess 22, the outside card of retaining ring 8 is located in second recess 54, make when the upper end of valve gap 2 is located to storage tank 51 cover at gland 5, can connect through retaining ring 8 between gland 5 and the valve gap 2, can not only make the firm in connection height, can also guarantee pivoted flexibility between gland 5 and the valve gap 2 simultaneously, make gland 5 can rotate on valve gap 2, for the open and close control to the valve provides the structural basis, structural design is more reasonable.

More specifically, go up magnetic unit 61 and be steel ladle magnetic structure, including magnet steel 611 and parcel layer 612, parcel layer 612 wraps up in the outside of magnet steel 611, and parcel layer 612 is the steel sheet, can improve the structural strength of going up magnetic unit 61, has avoided being smashed by the spiral shell under the exogenic action to the life of valve has been prolonged, has reduced use cost.

More specifically, set up in valve body 1, valve rod 3 between bonnet 2 and the gland 5 includes screw thread portion 31 again, keep off platform 32, seal groove 33 and valve rod top 34, the one end and the flashboard 4 of screw thread portion 31 are connected, the other end of screw thread portion 31 is provided with keeps off platform 32, the cross section that keeps off platform 32 is greater than the cross section of screw thread portion 31, and simultaneously, one side that keeps off platform 32 and deviates from screw thread portion 31 is provided with seal groove 33, and one side that seal groove 33 deviates from and keeps off platform 32 is valve rod top 34, and valve rod top 34 is inserted and is located in the inside groove 53 of gland 5, the segmentation setting of valve rod 3 has been realized, for setting up structural component on valve rod 3 and providing installation space and leaning on.

More specifically, be the rectangle setting with valve rod top 34, and the inside groove 53 of gland 5 is the rectangle setting equally, and the end that the one end in valve rod 3 inserted gland 5 promptly is the rectangle setting for back in the end of valve rod 3 inserts inside groove 53 can realize spacing between valve rod 3 and the gland 5, when having avoided rotating gland 5, relative motion appears and leads to the problem of control failure in valve rod 3 and gland 5, and structural design is more reasonable.

More specifically, be provided with two seal grooves 33 on the valve rod 3, and be provided with sealing washer 331 between the inner wall of the inner chamber of seal groove 33 and valve gap 2, and sealing washer 331 is "O" type circle to realized sealing between valve rod 3 and the valve gap 2, prevented the problem of valve leakage, make the leakproofness of valve better, simultaneously, the setting of two seal grooves 33 can realize double-deck sealed, and the leakproofness is higher.

More specifically, the last junction cover that just is located screw thread portion 31 and keeps off platform 32 of valve rod 3 is equipped with and keeps off ring 321, and keep off ring 321 and be the toper setting, keep off the one end that the ring 321 cross section is little and support and lean on in keeping off platform 32, keep off the big one end of ring 321 cross section and support and lean on the step of outstanding on the inner wall of the inner chamber of valve gap 2, can be effectively to valve rod 3 at valve body 1, the position of valve gap 2 and gland 5 is injectd, prevent the problem that valve rod 3 misplaces after using for a long time, structural stability is higher, the operation of opening and close of valve is more reliable, structural.

Fig. 4 is a structural diagram of another view angle of the gland according to a preferred embodiment of the present invention. As shown in fig. 1 and 4, an end surface of the locking member 72 is provided with a locking groove 722, and the locking groove 722 is used to facilitate the engagement with the pressing cover 5. In addition, a magnet placing hole 723 corresponding to the upper magnetic assembly 61 is formed in the unlocking piece 72 and beside the unlocking groove 722, the unlocking magnet 721 is embedded in the magnet placing hole 723, an installation space is provided for the unlocking magnet 721 through the magnet placing hole 723, and meanwhile, a boss 55 corresponding to the unlocking groove 722 is arranged on the end face of the end, away from the valve rod 3, of the gland 5, so that when the unlocking piece 72 is matched with the gland 5, the boss 55 can be inserted into the unlocking groove 722, stable connection between the unlocking piece 72 and the gland 5 is achieved, specifically, the boss 55 and the unlocking groove 722 can be of a structure with an embedded groove or a boss, and when the unlocking piece 72 is prevented from rotating, the unlocking piece 72 and the gland 5 rotate relatively, the rotating reliability is guaranteed, so that the opening and closing control of the valve through the key assembly 7 is more reliable, and the structural design is more reasonable.

The magnetic lock valve provided by the embodiment comprises a valve body 1, a valve cover 2, a valve rod 3, a gate plate 4, a gland 5, a magnetic lock component 6 and a key component 7; through being provided with magnetic lock subassembly 6 between valve gap 2 and gland 5, the last magnetic unit 61 through magnetic lock subassembly 6 and magnetic unit 62 down realize locking and unblock valve gap 2 and gland 5, realized compressing tightly and reseing through magnetic assembly, it is inconvenient to have avoided setting up the spring and compress tightly and reseed the magnetic lock valve assembly that brings, the problem of function expression limited and influence valve performance has improved the market competition of magnetic lock valve, more do benefit to the popularization and the popularization of product.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. A magnetic lock valve comprises a valve body, a valve cover, a valve rod, a gate plate and a gland, wherein the valve body is provided with a flow passage, a convex neck communicated with the flow passage is arranged on the outer wall of the valve body in a protruding mode, the valve cover is arranged on the convex neck in a covering mode, the gland is arranged on one side, deviating from the convex neck, of the valve cover, the gate plate is arranged in the flow passage and located in an area corresponding to the convex neck, one end of the valve rod penetrates through the convex neck and then is connected with the gate plate, the other end of the valve rod extends out of the convex neck and then is inserted into the valve cover and extends into the gland, the magnetic lock valve is characterized in that a magnetic lock component is arranged at the joint of the valve cover and the gland, a key component is arranged outside,

the magnetic lock assembly comprises an upper magnetic group and a lower magnetic group corresponding to the upper magnetic group, the upper magnetic group is arranged in the gland, the lower magnetic group is arranged in the valve cover and is positioned at one end close to the gland, and the magnetism of the mutually opposite surfaces of the upper magnetic group and the lower magnetic group is the same;

the key subassembly is independent structure, the key subassembly includes helping hand pole and lock opening piece, lock opening piece is last be provided with go up the magnetism of unblanking that the magnetic unit corresponds, and unblank the magnet with go up the magnetism of the mutual just right face of magnetic unit the same, the magnetism of unblanking the magnet is greater than go up the magnetism of magnetic unit, the helping hand pole transversely wears to locate lock opening piece is last.

2. The magnetic lock valve according to claim 1, wherein a positioning hole is formed in an end surface of the end of the valve cover where the gland is provided, and the lower magnetic group is embedded in the positioning hole.

3. The magnetic lock valve according to claim 2, wherein the end surface of the gland facing the end of the valve cap is provided with a receiving groove, the upper end of the valve cap is inserted into the receiving groove, the bottom of the receiving groove is provided with a limiting hole corresponding to the positioning hole, the upper magnet assembly is embedded in the limiting hole, an inner groove is formed in the center of the bottom of the receiving groove, and the end of the valve rod extending into the gland is inserted into the inner groove.

4. The magnetic lock valve according to claim 3, wherein a circle of first groove is formed in an outer wall of one end of the valve cover, where the gland is disposed, the groove side wall of the accommodating groove of the gland is provided with a circle of second groove corresponding to the first groove, the groove openings of the first groove and the second groove are opposite in direction, a retainer ring is disposed between the first groove and the second groove, the inner side of the retainer ring is clamped in the first groove, and the outer side of the retainer ring is clamped in the second groove.

5. The magnetic lock valve of claim 1, wherein the upper magnetic assembly is a steel ladle magnetic structure, and comprises a magnetic steel and a wrapping layer, the wrapping layer wraps the magnetic steel, and the wrapping layer is a steel sheet.

6. The magnetic lock valve according to claim 3, wherein the valve rod includes a threaded portion, a stop, a sealing groove, and a valve rod top, one end of the threaded portion is connected to the gate plate, the other end of the threaded portion is provided with the stop, the cross section of the stop is larger than that of the threaded portion, meanwhile, one side of the stop facing away from the threaded portion is provided with the sealing groove, one side of the sealing groove facing away from the stop is the valve rod top, and the valve rod top is inserted into the inner groove of the gland.

7. The magnetically-locked valve of claim 6, wherein the top of the stem is rectangular and the internal groove of the gland is likewise rectangular.

8. The magnetic lock valve according to claim 6, wherein two sealing grooves are arranged on the valve rod, a sealing ring is arranged between the sealing groove and the inner wall of the inner cavity of the valve cover, and the sealing ring is an "O" ring.

9. The magnetic lock valve according to claim 6, wherein a retaining ring is sleeved on the valve rod at a joint between the threaded portion and the retaining platform, the retaining ring is arranged in a conical shape, one end of the retaining ring with a small cross section abuts against the retaining platform, and one end of the retaining ring with a large cross section abuts against a step protruding from the inner wall of the inner cavity of the valve cover.

10. The magnetic lock valve according to claim 1, wherein an end face of the locking member is provided with a locking slot, a magnet placing hole corresponding to the upper magnetic group is formed on the locking member and beside the locking slot, the unlocking magnet is embedded in the magnet placing hole, and a boss corresponding to the locking slot is formed on an end face of the pressing cover facing away from the valve rod.