阅读说明：本技术 一种磁性闸阀 (Magnetic gate valve ) 是由 毛礼国 于 2021-08-25 设计创作，主要内容包括：本申请涉及一种磁性闸阀,涉及阀门技术领域,包括阀体、螺纹连接于阀体上的阀套、套设并转动于阀套上的阀帽,阀体内滑动设置有滑移于阀套内的阀芯,阀体内开设有供阀芯滑移的阀腔,阀帽用于驱动阀芯滑动将阀腔关闭和打开,阀帽和阀芯可拆卸连接,阀套的周向侧壁上套设有密封圈一,密封圈一滑动抵紧于阀帽的内侧壁。本申请通过设置阀套,利用阀套和阀体螺纹连接、和阀帽相互套接,使得阀帽、阀套、阀体可拆连接,以便于将阀芯从阀腔取出,缩短闸阀拆装的时间,从而具有便于闸阀的装配和维护的优点。(The utility model relates to a magnetic gate valve relates to valve technical field, establish and rotate the valve cap on the valve barrel including valve body, threaded connection valve barrel, cover on the valve body, slide in the valve body and be provided with the case that slides in the valve barrel, set up the valve pocket that supplies the case to slide in the valve body, the valve cap is used for driving the valve core to slide and closes and open the valve pocket, and the connection can be dismantled to valve cap and case, and the cover is equipped with sealing washer one on the circumference lateral wall of valve barrel, and sealing washer one slides and supports tightly in the inside wall of valve cap. This application is through setting up the valve barrel, utilizes valve barrel and valve body threaded connection and valve cap to cup joint each other for valve cap, valve barrel, valve body releasable connection, in order to take out the case from the valve chamber, shorten the time of gate valve dismouting, thereby have the advantage of the assembly and the maintenance of the gate valve of being convenient for.)

1. A magnetic gate valve characterized by: including valve body (1), threaded connection in valve barrel (2), cover on valve body (1) are established and are rotated in valve cap (3) on valve barrel (2), it has slide in valve body (1) to slide in case (4) in valve barrel (2), set up valve pocket (11) that supply case (4) to slide in valve body (1), valve cap (3) are used for driving valve core (4) to slide and close valve pocket (11) and open, valve cap (3) and case (4) can be dismantled and connect, the cover is equipped with sealing washer (21) on the circumference lateral wall of valve barrel (2), sealing washer (21) slide to tightly in the inside wall of valve cap (3).

2. A magnetic gate valve according to claim 1, characterized in that: valve core (4) including slide in valve plate (42), threaded connection in valve body (1) valve rod (41) in valve plate (42), set up the confession in valve cap (3) drive groove (31) that valve rod (41) upper end was gone into, valve rod (41) rotate along with valve cap (3) together.

3. A magnetic gate valve according to claim 2, characterized in that: the utility model discloses a valve rod, including valve rod (41), valve barrel (2), spacing ring (412), holding tank (22) that supply spacing ring (412) butt have been seted up in valve barrel (2), spacing ring (412) butt when holding tank (22), valve rod (41) upper end is located drive groove (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) support tightly in the inner wall of valve barrel (2).

4. A magnetic gate valve according to claim 2, characterized in that: slide along perpendicular to valve plate (42) slip direction in valve cap (3) and have gag lever post (33), set up locking groove (413) that supply gag lever post (33) to slide in on the lateral wall of valve rod (41), be equipped with the drive on valve cap (3) gag lever post (33) slides in the driving piece that locks groove (413).

5. A magnetic gate valve according to claim 4, characterized in that: the driving piece includes that slide spacing post (231), rotation in valve barrel (2) along valve rod (41) direction connect drive cover (5) on valve cap (3), set up in magnetic block (51) on drive cover (5), spacing post (231) have magnetism and receive magnetic block (51) to attract the back and slide to gag lever post (33), the one end that valve rod (41) were kept away from in gag lever post (33) is equipped with spigot joint in leading face (333) of spacing post (231), spacing post (231) are used for butt leading face (333) to drive gag lever post (33) and slide into in locking groove (413).

6. A magnetic gate valve according to claim 5, characterized in that: offer spacing groove (23) that supply spacing post (231) to slide on valve barrel (2), offer on valve cap (3) and communicate spacing groove (23) and supply the whole groove (32) of accomodating that slide in of spacing post (231), spacing post (231) receive gravity gliding back in spacing groove (23), the upper end of spacing post (231) is located and accomodates groove (32).

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

8. A magnetic gate valve according to claim 1, characterized in that: and a third sealing ring (12) is embedded into the upper end surface of the valve body (1), and the third sealing ring (12) is tightly propped against the bottom wall of the valve sleeve (2).

Technical Field

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

Background

The existing gate valve is an opening and closing part gate plate, the moving direction of the gate plate is vertical to the fluid direction, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled like an adjusting valve. In order to ensure the stability of the gate valve after operation, a magnetic gate valve is used to release the rotation of the gate valve by attraction of a magnetic member.

The gate valve is usually equipped with some devices which need to be controlled to be opened and closed, while the traditional gate valve is connected through bolts and nuts in the assembling process, and the bolts or nuts need to be unscrewed in the disassembling and maintenance process so as to disassemble all parts of the gate valve.

The inventor thinks that: when dismantling and maintaining the gate valve, it is longer that it is consuming time to twist bolt or nut for the assembly and the maintenance of gate valve are comparatively troublesome.

Disclosure of Invention

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

The application provides a magnetic gate valve adopts following technical scheme:

the utility model provides a magnetic gate valve, includes valve body, threaded connection in valve barrel, cover on the valve body are established and are rotated in valve cap on the valve barrel, it slides to slide to be provided with in the valve body case in the valve barrel, set up the valve pocket that supplies the case to slide in the valve body, the valve cap is used for driving the plug to slide and closes the valve pocket and open, the connection can be dismantled to valve cap and case, the cover is equipped with sealing washer one on the circumference lateral wall of valve barrel, a sealing washer slides and supports the inside wall tightly in the valve cap.

Through adopting above-mentioned technical scheme, when assembling the gate valve, place the case in the valve chamber in the valve body earlier, then overlap the valve barrel on the case to the rotating valve cover makes valve barrel threaded connection on the valve body, so that the upper end of case is worn out from the valve barrel. And then 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 limit the valve cap 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 so as to open or close the valve cavity.

When the gate valve is disassembled for maintenance, the valve cap slides towards the direction far away from the valve body, so that the first sealing ring slides and abuts against 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 enable the valve sleeve to be gradually separated from the valve body, the valve core is exposed, and the valve core is taken out from the valve cavity, so that the valve cavity and the valve core can be maintained conveniently. Therefore, by arranging the valve sleeve, the valve sleeve is connected with the valve body through threads and is sleeved with the valve cap, the valve sleeve and the valve body can be detachably connected, the valve core can be taken out from the valve cavity conveniently, the time for dismounting and mounting the gate valve is shortened, and the gate valve is convenient to assemble and maintain.

Optionally, the valve core comprises a valve plate and a valve rod, the valve plate slides in the valve body, the valve rod is in threaded connection with the valve plate, a driving groove is formed in the valve cap, the upper end of the valve rod is clamped in the driving groove, and the valve rod rotates along with the valve cap.

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 along with the rotation of the valve cap in the driving groove, and the valve plate 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 rod is sleeved on the valve sleeve, and the valve cap is sleeved on the valve sleeve, so that the upper end of the valve rod is located in the driving groove, the detachable connection of the valve core and the valve cap is achieved, and the valve core is convenient to install in the valve sleeve and the valve cap.

Optionally, the valve rod is fixedly connected with a limiting ring on the side wall in the valve sleeve, a containing groove for abutting the limiting ring is formed in the valve sleeve, the limiting ring abuts against the containing groove, the upper end of the valve rod is located in the driving groove, a plurality of sealing rings II are sleeved on the side wall of the valve rod above the limiting ring, and the sealing rings II abut against the inner wall of the valve sleeve.

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. Then after putting the valve plate into the valve chamber, with the valve barrel cover on the valve rod to make two sliding butt of sealing washer in valve barrel inner wall, and with the clearance seal between valve rod and the valve barrel, the spacing ring butt on the valve rod is in the holding tank. The valve sleeve is rotated to drive the valve rod to rotate together, so that the valve rod and the valve sleeve move together towards the direction close to the valve body. After the valve sleeve is connected with the valve body through the threads, the upper end of the valve rod extends out of the valve sleeve, then the valve cap is sleeved on the valve sleeve, so that the upper end of the valve rod is located in the driving groove, and the valve cavity is sealed by the valve plate.

When the valve cavity is opened, the valve cap rotates to drive the valve rod to rotate, the 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 to open the valve cavity until the valve plate abuts against the limiting ring and abuts against the groove wall of the accommodating groove tightly, and an operator is prompted that the valve cavity is completely opened. When the valve cavity is closed, the valve cap is rotated reversely to drive the valve rod to rotate, the limiting ring abuts 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 abut against the inner wall of the valve cavity, and an operator is prompted that the valve cavity is completely closed.

Consequently through setting up spacing ring, sealing washer two, utilize the spacing ring butt in the holding tank for only need rotate the valve barrel when valve rod and valve plate installation can stretch into the drive inslot with the valve rod from the valve barrel, and under the support of sealing washer two tightly, the restriction valve rod gliding, so that the valve rod drives the valve plate and slides and be convenient for the valve rod and install among valve barrel and the valve cap simultaneously.

Optionally, slide along perpendicular to valve plate slip direction in the valve cap and have a gag lever post, set up the locking groove that supplies the gag lever post to slide in on the lateral wall of valve rod, be equipped with the drive on the valve cap the gag lever post slides in the driving piece in locking groove.

Through adopting above-mentioned technical scheme, when opening the valve pocket, start driving piece and drive the gag lever post and slide in 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 on, thereby the valve plate of being convenient for can shift up smoothly under the rotation of valve rod and open the valve pocket.

Optionally, the driving piece include slide in the valve barrel along the valve rod direction spacing post, rotate connect in the valve cap on the drive cover, set up in magnetic block on the drive cover, spacing post has magnetism and receives magnetic block to attract the back slip to the gag lever post, the one end that the valve rod was kept away from to the gag lever post is equipped with the butt in the spigot surface of spacing post, spacing post is used for the butt spigot surface to drive the gag lever post and slides in locking inslot.

Through adopting above-mentioned technical scheme, when the drive gag lever post slips into locking inslot, rotate the drive cover to make magnetic block and spacing post corresponding, so that spacing post receives the attraction of magnetic block and then slips into in the valve cap. And then make spacing post butt drive the gag lever post in the spigot surface and slide in the locking groove to lock the valve rod in the sliding of valve barrel.

Optionally, set up the spacing groove that supplies spacing post to slide on the valve bonnet, set up the groove of accomodating that the intercommunication spacing groove supplies the whole slips in of spacing post on the valve bonnet, spacing post receives gravity gliding spacing inslot back, the upper end of spacing post is located accomodates the inslot.

Through adopting above-mentioned technical scheme, when the drive gag lever post slided into locking inslot, it makes magnetism piece and spacing post corresponding to rotate the drive cover to make spacing post receive the attraction of magnetism piece after all slide into from the spacing groove and accomodate the inslot. 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 limiting column, the limiting column slides into the limiting groove under the action of gravity, so that the upper end of the limiting column is positioned in the accommodating groove, and the rotation between the valve cap and the valve sleeve is locked to lock the on-off of the valve cavity. Until the valve cavity needs to be opened or closed, the magnetic block corresponds to the limiting column again so as to attract the limiting column and then slide into the accommodating groove completely, and the locking between the valve cap and the valve sleeve is released, so that the valve cap drives the valve rod to rotate and then drives 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, the spring on the gag lever post is located to baffle fixedly connected with cover, the one end fixed connection that the baffle was 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 from the locking groove.

Through adopting above-mentioned technical scheme, when the lock to the valve rod is relieved to needs, rotate the drive cover to make magnetic block and spacing post break away from mutually, make spacing post receive the gravity gliding to break away from the gag lever post, the gag lever post slides in the spout after the locking groove under the restoring force effect of spring, in order to relieve the locking of valve rod, thereby be convenient for the automatic re-setting of gag lever post in the valve cap.

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

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

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

through the arrangement of the valve sleeve, the valve cap, the valve sleeve and the valve body are detachably connected by utilizing the threaded connection of the valve sleeve and the valve body and the mutual sleeve joint of the valve cap, so that the valve core can be conveniently taken out from the valve cavity, the time for dismounting and mounting the gate valve is shortened, and the assembly and maintenance of the gate valve are facilitated;

the limiting ring and the second sealing ring are arranged, and the limiting ring is abutted against 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 convenient to install in the valve sleeve and the valve cap;

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

the valve cap is provided with the limiting groove and the accommodating groove, the rotation between the valve cap and the valve sleeve is locked by utilizing the sliding of the limiting column in the limiting groove and the accommodating groove, the limiting column is attracted and then completely slides into the accommodating groove, and the locking between the valve cap and the valve sleeve is released, so that the valve cap drives the valve rod to rotate and then drives the valve plate to slide;

through setting up baffle and spring, utilize the restoring force of spring to drive the gag lever post and slide from the locking groove to relieve 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 diagram of an embodiment of the present application.

Fig. 2 is a schematic sectional view for showing a valve element according to an embodiment of the present application.

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

Description of reference numerals: 1. a valve body; 11. a valve cavity; 12. a third sealing ring; 2. a valve housing; 21. a first sealing ring; 22. accommodating grooves; 23. a limiting groove; 231. a limiting column; 3. a bonnet; 31. a drive slot; 32. a receiving groove; 33. a limiting rod; 331. a baffle plate; 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 with reference to figures 1-3.

The embodiment of the application discloses a magnetic gate valve.

Referring to fig. 1 and 2, the magnetic gate valve includes a valve body 1, a valve sleeve 2, a valve cap 3, and a valve core 4, where the valve body 1 is a three-way valve, the valve sleeve 2 is connected to a valve opening in the middle of the valve body 1 through a thread, the valve cap 3 is sleeved and rotatably connected to one end of the valve sleeve 2 away from the valve body 1, the valve core 4 slides in the valve body 1 and the valve sleeve 2 in a 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 valve cap 3 rotates to 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 into the end face of one end of the valve body 1 in threaded connection with the valve sleeve 2, one end of the valve sleeve 2 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, the end face of the valve sleeve 2 in threaded connection with the valve body 1 is abutted 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 and enables the first sealing ring 21 to abut against the inner side wall of the valve cap 3, so that the valve cap 3 and the valve sleeve 2 are sleeved through abutting of the first sealing ring 21, and the valve cap 3 rotates on the valve sleeve 2.

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

Referring to fig. 2, the valve rod 41 is sleeved with a plurality of second sealing rings 411 on the circumferential side wall in the valve housing 2, the number of the second sealing rings 411 in the embodiment of the present application is two, and the second sealing rings 411 abut against the inner side wall of the valve housing 2. When the gap between the valve rod 41 and the valve housing 2 is sealed, and the valve rod 41 is inserted upwards into the driving groove 31, the valve rod 41 can rotate in the valve housing 2 and limit the valve rod 41 to be separated downwards from the driving groove 31, so that after the valve bonnet 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 both tapered in a direction away from the bonnet 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 block the valve cavity 11, and the sealing performance of the valve plate 42 for blocking 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 close to the valve plate 42, and a receiving groove 22 for the limiting ring 412 to slide up and then abut against is formed in the valve sleeve 2. When the stop ring 412 abuts against the receiving groove 22, the upper end of the valve rod 41 extends into the driving groove 31, and the stop ring 412 limits the valve rod 41 to slide upwards continuously, so as to prevent the valve rod 41 from sliding upwards to lift the valve cap 3 away from the valve sleeve 2, so that the valve rod 41 rotates to drive the valve plate 42 to slide downwards to close the valve cavity 11.

Referring to fig. 2, a top wall of the valve sleeve 2 on one side of the valve rod 41 is provided with a limiting groove 23, a magnetic limiting column 231 is slidably arranged in the limiting groove 23, the limiting column 231 is made of a magnetic material, the upper end of the limiting column 231 is arc-shaped, and the sliding direction of the limiting column 231 is the same as that of the valve plate 42. The bonnet 3 is provided with a receiving groove 32 communicated with the limiting groove 23, and the receiving groove 32 is used for the limiting column 231 to slide in completely. When the position-limiting post 231 is located in the position-limiting groove 23, the upper end of the position-limiting post 231 is located in the receiving groove 32 to lock the rotational connection of the bonnet 3 and the valve housing 2.

Referring to fig. 2, the upper end of the bonnet 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 limiting column 231 are attracted. So that when the driving sleeve 5 is rotated to make the magnetic block 51 correspond to the limiting post 231, the magnetic block 51 attracts the limiting post 231, so that the limiting post 231 slides out of the limiting groove 23 and completely slides into the accommodating groove 32 to unlock the rotation lock between the valve cap 3 and the valve housing 2, so that the valve cap 3 rotates 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, the stopper rod 33 is slidably moved in the bonnet 3 in a direction perpendicular to the sliding direction of the stopper rod 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 the limiting rod 33 to slide 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 limiting column 231, the driving sleeve 5 and the magnetic block 51 are driving pieces for driving the limiting rod 33 to slide in the locking groove 413.

Referring to fig. 3, a baffle 331 is fixedly connected to a side wall of the limiting rod 33, a sliding groove 34 for allowing the baffle 331 and the limiting rod 33 to slide is formed in the bonnet 3, a spring 332 is fixedly connected to one side of the baffle 331, which is opposite to the limiting column 231, and one end of the spring 332, which is far away from the baffle 331, is fixedly connected to a groove wall of the sliding groove 34, so that the limiting rod 33 slides out of the locking groove 413 and then slides into the sliding groove 34 by the pulling force of the spring 332.

Referring to fig. 2 and 3, an inclined guide surface 333 is disposed at an end of the limit rod 33 close to the limit post 231, the guide surface 333 contacts with an upper end of the limit post 231, and after the magnetic block 51 of the limit post 231 is attracted and slides upwards, the upper end of the limit post 231 contacts with the guide surface 333, so that the limit rod 33 slides in a direction away from the limit post 231 until the limit rod 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 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 assembling the gate valve, the valve rod 41 and the valve plate 42 are screwed, and then the valve plate 42 is placed in the valve cavity 11. 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, so that 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 down and simultaneously drives the valve sleeve 2 to move down together. After the valve sleeve 2 abuts against the valve body 1, the valve sleeve 2 and the valve body 1 are in threaded connection with each other along with the rotation of the valve sleeve 2, and the valve plate 42 is positioned in the valve cavity 11 to close the valve cavity 11.

Then the valve cap 3 is sleeved on the valve sleeve 2, so that the third sealing ring 12 on the valve sleeve 2 abuts against the inner wall of the valve cap 3, and the valve cap 3 can be limited to be separated from the valve sleeve 2 while the valve cap 3 rotates on the valve sleeve 2. And then make the upper end of the valve stem 41 stretch into the driving groove 31, the magnetic block 51 on the driving sleeve 5 and the spacing column 231 on the valve cap 3 are far away from each other at this moment, the spacing column 231 is located in the spacing groove 23, the accommodating groove 32, and the spacing rod 33 is located in the sliding groove 34, the on-off state of the valve cavity 11 inside the valve body 1 is locked, so as to finish the assembly of the valve body 1, the valve sleeve 2, the valve cap 3, and the valve core 4, and simultaneously, the valve core 4 is convenient to take out from the valve cavity 11, the time for assembling and disassembling the gate valve is shortened, thereby the assembly and maintenance of the gate valve are convenient.

When the valve cavity 11 needs to be opened or closed, the driving sleeve 5 is rotated to align the magnetic block 51 with the position-limiting post 231, so that the position-limiting post 231 slides up to push the position-limiting rod 33 into the locking groove 413, the sliding of the valve rod 41 is locked, and the rotation locking between the bonnet 3 and the valve housing 2 is released, so that the bonnet 3 drives the valve rod 41 to rotate, the valve rod 41 drives the valve plate 42 to slide, and the valve cavity 11 is opened or closed conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.