Stainless steel magnetic control gate valve with special structure

Abstract

The stainless steel magnetic control gate valve of the special structure comprises a valve body, a valve cover, a check ring, a buckle cap, a valve rod, an abutting ring and a gate plate, the lower end of the valve cover is connected to the upper end of the valve body, a third connecting groove is formed in the lower end of the buckle cap, the upper end of the valve cover is embedded in the third connecting groove, and a first fixing groove is formed in the groove wall of the third connecting groove; a second fixing groove is formed in the periphery of the valve cover, the check ring is embedded in the first fixing groove and the second fixing groove, the gate plate is rotationally embedded in the connecting channel, the lower end of the valve rod is connected to the gate plate, the abutting ring is connected to the periphery of the valve rod, a third fixing groove is formed in the groove wall of the communicating groove, and the outer side of the abutting ring is embedded in the third fixing groove. The check ring is embedded in the first fixing groove and the second fixing groove, the abutting ring is arranged on the periphery of the valve rod in a sleeving mode, and the abutting ring is embedded in the third fixing groove, so that the buckle cap, the valve cover and the valve rod are relatively fixed in the axial direction of the valve rod, buckle cap drilling and use of positioning pins are reduced, the service life of the gate valve is prolonged, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gate valves, in particular to a special-structure stainless steel magnetic control gate valve. BACKGROUND

[0002] The magnetic locking gate valve is widely used in pipeline transportation of various industries and manually cuts off or connects the medium through a special key.

[0003] The existing structure of the magnetic locking gate valve on the market is punched on the cap, a positioning pin is inserted into the hole and is relatively fixedly connected with the valve rod, so that the cap, the valve cover and the valve rod are relatively fixed along the axial direction of the valve rod. When the cap is twisted to drive the valve rod to rotate during the opening and closing of the gate valve, the direct stress point between the cap and the valve rod is concentrated on the positioning pin, so that the positioning pin is deformed or broken due to the increase in the opening times, the cap and the valve rod are separated, troubles are caused in the use process, the probability of maintenance is increased and the cost of replacing the accessories is increased. In addition, the processing difficulty of drilling the hole and punching the pin at the cap is relatively large, and the production cost is relatively high. CONTENT OF THE UTILITY MODEL

[0004] In order to realize the relative fixation of the cap, the valve cover and the valve rod along the axial direction of the valve rod and reduce the production cost of the gate valve, the application provides a special-structure stainless steel magnetic control gate valve.

[0005] The special-structure stainless steel magnetic control gate valve provided by the application adopts the following technical scheme:

[0006] The special-structure stainless steel magnetic control gate valve comprises a valve body, a valve cover, a check ring, a cap, a valve rod, a pressing ring and a gate plate. The valve body is provided with a connecting channel. The lower end of the valve cover is connected to the upper end of the valve body. The lower end of the cap is provided with a third connecting groove. The upper end of the valve cover is embedded in the third connecting groove. The groove wall of the third connecting groove is provided with a first fixing groove. The outer periphery of the valve cover is provided with a second fixing groove. The check ring is embedded in the first fixing groove and the second fixing groove. The gate plate is rotatably embedded in the connecting channel to realize the opening and closing of the connecting channel. The rotation axis of the gate plate is vertical. The lower end of the valve rod is connected to the gate plate. The valve cover is provided with a communication groove. The groove bottom of the third connecting groove is provided with a limiting groove. The upper end of the valve rod is embedded in the limiting groove after passing through the communication groove. The outer wall of the one end of the valve rod embedded in the limiting groove is matched with the shape of the limiting groove. The pressing ring is connected to the outer periphery of the valve rod. The groove wall of the communication groove is provided with a third fixing groove. The outer side of the pressing ring is embedded in the third fixing groove.

[0007] By adopting the technical scheme, the stop ring is embedded in the first fixing groove and the second fixing groove, the relative fixation between the cap and the bonnet along the axial direction of the bonnet is realized, the stop ring is embedded in the third fixing groove, the relative fixation between the valve stem and the bonnet along the axial direction of the bonnet is realized, and the relative fixation between the cap, the bonnet and the valve stem along the axial direction of the valve stem is realized, thereby reducing the use of the cap drilling and the positioning pin, prolonging the service life of the gate valve and reducing the production cost.

[0008] Preferably, the valve bonnet further comprises a second sealing ring; the outer periphery of the valve bonnet is provided with a second sealing groove; the second sealing ring is embedded in the second sealing groove; and the outer wall of the second sealing ring abuts against the third connecting groove.

[0009] By adopting the technical scheme, the second sealing ring is embedded in the second sealing groove, and the second sealing ring abuts against the third connecting groove, thereby reducing the leakage possibility of the connection between the valve bonnet and the cap and improving the sealing performance of the gate valve.

[0010] Preferably, the valve stem further comprises a third sealing ring; the outer periphery of the valve stem is provided with a third sealing groove; the third sealing ring is embedded in the third sealing groove; and the outer wall of the third sealing ring abuts against the communicating groove.

[0011] By adopting the technical scheme, the third sealing ring is embedded in the third sealing groove, and the third sealing ring abuts against the communicating groove, thereby reducing the leakage possibility of the connection between the valve bonnet and the valve stem and improving the sealing performance of the gate valve.

[0012] Preferably, the third sealing groove is provided with a plurality of third sealing grooves; the third sealing grooves are distributed along the axial direction of the valve stem at intervals; and the number of the third sealing rings is the same as and corresponds to the number of the third sealing grooves.

[0013] By adopting the technical scheme, the plurality of third sealing grooves are arranged, and the sealing performance of the gate valve is improved.

[0014] Preferably, the lower end of the valve bonnet is connected with a connecting ring; the upper end of the valve body is provided with a second connecting groove; and the connecting ring is threadedly connected in the second connecting groove.

[0015] By adopting the technical scheme, the connecting ring is threadedly connected in the second connecting groove, thereby reducing the leakage possibility of the connection between the valve bonnet and the valve body and improving the sealing performance of the gate valve.

[0016] Preferably, the valve body further comprises a first sealing ring; the groove wall of the second connecting groove near the valve bonnet is provided with a first sealing groove; the first sealing ring is embedded in the first sealing groove; the inner wall of the first sealing ring abuts against the outer wall of the connecting ring; and the upper end of the first sealing ring abuts against the lower end of the valve bonnet.

[0017] By adopting the technical scheme, the first sealing ring is embedded in the first sealing groove, the first sealing ring abuts against the lower end of the valve cover, and the first sealing ring abuts against the outer wall of the connecting ring, thereby reducing the possibility of leakage at the connecting position of the valve cover and the valve body and improving the sealing performance of the gate valve.

[0018] Preferably, the third connecting groove is provided with a positioning groove, the magnet is slidably embedded in the positioning groove, the sliding direction of the magnet is vertical, the upper end of the valve cover is provided with a sliding groove, the distance between the axis of the sliding groove and the rotating axis of the valve rod is equal to the distance between the axis of the positioning groove and the rotating axis of the valve rod, the sliding groove is provided with two, the two sliding grooves are distributed at intervals around the rotating axis of the valve rod, the number of the pins and the number of the sliding grooves are the same and one-to-one corresponding, the pin is slidably embedded in the sliding groove, the sliding direction of the pin is parallel to the sliding direction of the magnet, the upper end of the pin abuts against the magnet, the reset member is connected between the valve cover and the pin, the reset member enables the pin to have a tendency to be embedded in the positioning groove, the positioning groove is provided with a plurality of, the plurality of positioning grooves are divided into two groups, the two groups of positioning grooves correspond to the two sliding grooves, the number of the magnets is the same as the number of the positioning grooves and one-to-one corresponding, the outer wall of the magnet is in close contact with the groove wall of the positioning groove, the key assembly is used for being connected to the upper end of the buckle cap, the key assembly is fixed in the circumferential direction with the buckle cap, the key assembly is connected with a magnetic ring, and the magnetic ring and the magnet repel each other.

[0019] By adopting the technical scheme, the pin is embedded in the positioning groove under the action of the reset member, the relative fixation of the buckle cap and the valve cover in the circumferential direction is realized, the relative fixation of the valve cover and the valve rod in the circumferential direction is realized, the possibility of the accidental opening of the gate plate under the action of external force when the key assembly is not connected is reduced, and the reliability of the gate valve is improved.

[0020] Preferably, the diameter of the positioning groove is greater than the diameter of the sliding groove, and the outer wall of the magnet is in close contact with the groove wall of the positioning groove.

[0021] By adopting the technical scheme, the magnet slidably abuts against the upper end of the valve cover, the magnet is embedded in the sliding groove, the relative fixation of the buckle cap and the valve cover in the circumferential direction is reduced, and the normal use of the gate valve is ensured.

[0022] Preferably, the outer periphery of one end of the pin close to the magnet is provided with a second round corner, and the second round corner is used for abutting against the groove wall of the positioning groove.

[0023] By adopting the technical scheme, the second round corner abuts against the groove wall of the positioning groove, the pin is guided, the pin is embedded in the positioning groove, and the relative fixation of the valve cover and the buckle cap in the circumferential direction is realized.

[0024] Preferably, the connecting channel is provided with a second rotating groove at the inner wall of the side away from the valve cover; the connecting channel is provided with a first rotating groove at the inner wall of the side close to the valve cover; the gate is rotatably embedded in the first rotating groove and the second rotating groove; the outer wall of the gate is in close contact with the groove wall of the first rotating groove and the groove wall of the second rotating groove; and the lower end of the gate is tapered away from the side of the valve cover.

[0025] By adopting the above technical scheme, the lower end of the gate is tapered away from the side of the valve cover, so that the gate valve is tightly pressed against the groove bottom of the first rotating groove and the second rotating groove under the action of gravity, thereby improving the sealing performance between the gate and the valve body.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. By embedding the retaining ring in the first fixed groove and the second fixed groove, the relative fixation between the cap and the valve cover in the direction of the valve cover axis is realized, the clamping ring is arranged on the outer periphery of the valve stem, the clamping ring is embedded in the third fixed groove, the relative fixation between the valve stem and the valve cover in the direction of the valve cover axis is realized, and then the relative fixation between the cap, the valve cover and the valve stem in the axial direction of the valve stem is realized, thereby reducing the use of cap drilling and positioning pins, improving the service life of the gate valve, and reducing production costs;

[0028] 2. The pin is embedded in the positioning groove under the action of the reset member, the relative fixation between the cap and the valve cover in the circumferential direction is realized, and then the relative fixation between the valve cover and the valve stem in the circumferential direction is realized, thereby reducing the possibility of accidental opening of the gate by external force when the key assembly is not connected, improving the reliability of the gate valve, and when the key assembly is connected to the cap, the magnet is repelled by the magnetic ring, the pin is pushed to overcome the elastic force of the reset member to separate from the positioning groove, and the relative fixation between the cap and the valve cover in the circumferential direction is released;

[0029] 3. The magnet slides against the upper end of the valve cover, reducing the possibility of the magnet sliding into the sliding groove and causing the relative fixation between the cap and the valve cover in the circumferential direction, thereby ensuring normal use of the gate valve. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a sectional view of a special structure of a stainless steel magnetic control gate valve.

[0031] Figure 2 is Figure 1 is an enlarged view of A in

[0032] Figure 3 is an exploded structural schematic view of the valve cover, the cap and the retaining ring.

[0033] Figure 4 is a partial structural schematic view of a special structure of a stainless steel magnetic control gate valve.

[0034] Figure 5 is Figure 1 is an enlarged view of B in

[0035] Figure 6 is an exploded structural schematic view of the cap and key assembly.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1. valve body; 11. main pipe; 111. first connecting groove; 112. connecting channel; 113. first rotating groove; 114. second rotating groove; 12. connecting seat; 121. second connecting groove; 122. first sealing groove;

[0038] 2. valve cover; 21. main body; 22. connecting ring; 23. first boss; 231. first chamfer; 232. second sealing groove; 233. sliding groove; 234. second fixing groove; 24. second boss; 25. communicating groove; 26. first step groove; 27. second step groove; 28. third fixing groove;

[0039] 3. cap; 31. third connecting groove; 32. first round corner; 33. first recess; 34. positioning groove; 35. limiting groove; 36. third boss; 361. third round corner; 37. clamping groove; 38. first fixing groove;

[0040] 41. retaining ring; 42. magnet; 43. pin; 431. second round corner; 44. reset member; 45. abutting ring;

[0041] 5. gate; 51. accommodating groove; 52. liquid passing port; 53. mounting groove;

[0042] 6. valve stem; 61. abutting plate; 62. third sealing groove;

[0043] 7. key assembly; 71. mounting seat; 711. second recess; 712. ring groove; 713. through hole; 72. magnetic ring; 73. clamping block; 74. rotating rod; 741. mounting hole; 742. limiting ring; 7421. second chamfer; 75. lifting ring;

[0044] 8. sealing assembly; 81. first sealing ring; 82. second sealing ring; 83. third sealing ring. DETAILED DESCRIPTION

[0045] The application will be further described in detail below with reference to the accompanying drawings.

[0046] REFERENCE Figure 1The embodiment of the application discloses a special structure stainless steel magnetic control gate valve which comprises a valve body 1, a valve cover 2 and a sealing assembly 8, the valve body 1 comprises a main pipe 11 and a connecting seat 12, the two ends of the main pipe 11 along the axial direction of the main pipe 11 are respectively provided with first connecting grooves 111, the axial line of the first connecting grooves 111 coincides with the axial line of the main pipe 11, the first connecting grooves 111 are used for being connected with external pipelines, the groove bottoms of the first connecting grooves 111 are coaxially provided with connecting channels 112, and the connecting channels 112 are communicated with the two first connecting grooves 111. The lower end of the connecting seat 12 is fixedly connected to the outer wall of the main pipe 11, the end, away from the main pipe 11, of the connecting seat 12 is coaxially provided with a second connecting groove 121, the groove bottom of the second connecting groove 121 is coaxially provided with a first rotating groove 113, and the first rotating groove 113 is communicated with the connecting channel 112. The valve cover 2 comprises a main body 21 and a connecting ring 22, the connecting ring 22 is coaxially fixedly connected to the lower end of the main body 21, the connecting ring 22 is coaxially and threadedly connected in the second connecting groove 121, and the end, away from the main pipe 11, of the connecting seat 12 abuts against the lower end of the main body 21. The groove wall of the end, away from the main pipe 11, of the second connecting groove 121 is provided with a first sealing groove 122, the sealing assembly 8 comprises a first sealing ring 81, the first sealing ring 81 is embedded in the first sealing groove 122, the outer wall of the first sealing ring 81 abuts against the groove wall of the first sealing groove 122, the inner wall of the first sealing ring 81 abuts against the outer wall of the connecting ring 22, the upper end of the first sealing ring 81 abuts against the lower end of the main body 21, and the lower end of the first sealing ring 81 abuts against the groove bottom of the first sealing groove 122.

[0047] With reference to Figure 1 And Figure 2 The special structure stainless steel magnetic control gate valve further comprises a buckle cap 3. The buckle cap 3 is coaxially connected to the upper end of the valve cover 2, the lower end of the buckle cap 3 is coaxially provided with a third connecting groove 31, the valve cover 2 further comprises a first boss 23, the first boss 23 is coaxially fixedly connected to the upper end of the main body 21, the first boss 23 is embedded in the third connecting groove 31, the lower end of the buckle cap 3 abuts against the upper end of the main body 21, the end, away from the main body 21, of the first boss 23 abuts against the groove bottom of the third connecting groove 31, and the outer wall of the first boss 23 is in close contact with the groove bottom of the third connecting groove 31. The outer periphery of the end, away from the main body 21, of the first boss 23 is provided with a first chamfer 231, the groove wall of the end, away from the groove bottom of the third connecting groove 31, of the third connecting groove 31 is provided with a first round corner 32, and the first round corner 32 is used for abutting against the first chamfer 231. The end, away from the main body 21, of the first boss 23 is coaxially fixedly connected with a second boss 24, the groove bottom of the third connecting groove 31 is coaxially provided with a first recess 33, the second boss 24 is embedded in the first recess 33, and the outer wall of the second boss 24 is in close contact with the groove wall of the first recess 33.

[0048] With reference to Figure 2 And Figure 3The special structure stainless steel magnetic control gate valve further comprises a stop ring 41. The third connecting groove 31 is provided with a first fixing groove 38 at the groove wall, the first boss 23 is provided with a second fixing groove 234 at the outer periphery, the inner wall of the stop ring 41 is embedded in the second fixing groove 234, and the outer wall of the stop ring 41 is embedded in the first fixing groove 38.

[0049] With reference to Figure 1 and Figure 2 The first boss 23 is provided with a second sealing groove 232 at the outer periphery, and the second sealing groove 232 is located at one side of the second fixing groove 234 close to the main body 21. The sealing assembly 8 further comprises a second sealing ring 82, and the second sealing ring 82 is embedded in the second sealing groove 232. The inner wall of the second sealing ring 82 abuts against the groove bottom of the second sealing groove 232, and the outer wall of the second sealing ring 82 abuts against the groove wall of the third connecting groove 31.

[0050] With reference to Figure 4 The first boss 23 is provided with a sliding groove 233 at one end away from the main body 21. The sliding groove 233 is provided with two sliding grooves 233 located at two sides of the first boss 23 perpendicular to the axial direction of the first boss 23, and the axial lines of the two sliding grooves 233 are coplanar with the axial line of the first boss 23. The third connecting groove 31 is provided with a plurality of positioning grooves 34. The plurality of positioning grooves 34 are distributed at intervals around the axial line of the buckle cap 3, and the distance from the axial line of any positioning groove 34 to the axial line of the buckle cap 3 is equal to the distance from the axial line of any sliding groove 233 to the axial line of the first boss 23. In the embodiment, the positioning grooves 34 are provided with four positioning grooves 34, and the four positioning grooves 34 are divided into two groups. The two groups of positioning grooves 34 correspond to the two sliding grooves 233 respectively, and the included angle between the axial lines of the two positioning grooves 34 in the same group and the connecting line of the axial line of the buckle cap 3 is 60°.

[0051] With reference to Figure 2The special structure stainless steel magnetic control gate valve further comprises magnets 42, pins 43 and reset members 44. The magnets 42 are the same in number as the positioning grooves 34 and one-to-one corresponding, the magnets 42 are slidingly embedded in the positioning grooves 34, and the sliding direction of the magnets 42 is parallel to the axis direction of the positioning grooves 34. The outer wall of the magnet 42 is in close contact with the groove wall of the positioning groove 34, and the diameter of the positioning groove 34 is greater than the diameter of the sliding groove 233. The pins 43 and the reset members 44 are the same in number as the sliding grooves 233 and one-to-one corresponding, the pins 43 are slidingly embedded in the sliding grooves 233, the sliding direction of the pins 43 is parallel to the sliding direction of the magnets 42, and the outer wall of the pin 43 is in close contact with the groove wall of the sliding groove 233. The end of the pin 43 away from the groove bottom of the sliding groove 233 is used to abut against the end of the magnet 42 away from the groove bottom of the positioning groove 34, and the outer periphery of the end of the pin 43 close to the magnet 42 is provided with a second round corner 431, and the second round corner 431 is used to abut against the groove wall of the positioning groove 34. The reset member 44 is connected between the pin 43 and the first boss 23, and the upper end of the pin 43 has a tendency to be embedded in the positioning groove 34. In the embodiment, the reset member 44 adopts a spring, one end of the reset member 44 is connected to the end of the pin 43 close to the groove bottom of the sliding groove 233, and the other end of the reset member 44 is connected to the groove bottom of the sliding groove 233.

[0052] With reference to Figure 1 The special structure stainless steel magnetic control gate valve further comprises a gate plate 5, the gate plate 5 is rotationally embedded in the connecting channel 112 to realize the opening and closing of the connecting channel 112, and the rotation axis of the gate plate 5 coincides with the axis of the connecting seat 12. The inner wall of the side of the connecting channel 112 away from the first rotation groove 113 is provided with a second rotation groove 114, the upper end of the gate plate 5 passes through the first rotation groove 113 and is embedded in the second connecting groove 121, the lower end of the gate plate 5 is embedded in the second rotation groove 114, the outer wall of the gate plate 5 is in close contact with the groove wall of the first rotation groove 113 and the second rotation groove 114, and the lower end of the gate plate 5 is tapered towards the side close to the groove bottom of the second rotation groove 114 along the rotation axis of the gate plate 5. The lower end of the gate plate 5 is coaxially provided with a containing groove 51, and the outer wall of the end of the gate plate 5 close to the groove bottom of the second rotation groove 114 is provided with a liquid passing port 52, and the liquid passing port 52 is in communication with the containing groove 51.

[0053] With reference to Figure 1 And Figure 5 The special structure stainless steel magnetic control gate valve further comprises a valve rod 6. The groove bottom of the containing groove 51 is coaxially provided with a mounting groove 53, and the lower end of the valve rod 6 is coaxially embedded in the mounting groove 53. The lower end of the main body 21 is coaxially provided with a communication groove 25, and the communication groove 25 penetrates the main body 21, the first boss 23 and the second boss 24 in sequence. The groove bottom of the first recess 33 is coaxially provided with a limiting groove 35, and the upper end of the valve rod 6 passes through the communication groove 25 and is embedded in the limiting groove 35.

[0054] With reference to Figure 3 And Figure 4The outer wall of one end of the valve rod 6 embedded in the limiting groove 35 is matched with the shape of the limiting groove 35. In the embodiment, the limiting groove 35 is a waist drum shape.

[0055] With reference to Figure 1 and Figure 5 The special structure stainless steel magnetic control gate valve further comprises an abutting ring 45. The first step groove 26 is arranged at the groove wall of the connecting groove near one end of the gate plate 5, the abutting plate 61 is coaxially fixedly connected to the outer periphery of the valve rod 6, the abutting plate 61 is embedded in the first step groove 26, and the side surface of the abutting plate 61 away from the gate plate 5 abuts against the groove bottom of the first step groove 26. The second step groove 27 is arranged at the groove wall of the first step groove 26 near one end of the gate plate 5, the third fixed groove 28 is arranged at the groove wall of the second step groove 27, the abutting ring 45 is coaxially arranged on the outer periphery of the valve rod 6, the abutting ring 45 is in an L shape, the upper end of the abutting ring 45 abuts against the side surface of the abutting plate 61 away from the groove bottom of the first step groove 26, and the lower end of the abutting ring 45 is embedded in the third fixed groove 28 and abuts against the side groove wall of the third fixed groove 28 near the gate plate 5.

[0056] With reference to Figure 1 and Figure 3 The sealing assembly 8 further comprises a third sealing ring 83, the outer wall of the valve rod 6 is matched with the groove wall of the communicating groove 25, the outer wall of the valve rod 6 is provided with the third sealing groove 62, the third sealing groove 62 is provided with a plurality of third sealing grooves 62, and the third sealing grooves 62 are distributed along the axis of the valve rod 6. In the embodiment, the third sealing groove 62 is provided with two third sealing grooves 62. The number of the third sealing rings 83 is the same as the number of the third sealing grooves 62 and one-to-one corresponding, the third sealing ring 83 is embedded in the third sealing groove 62, the inner wall of the third sealing ring 83 abuts against the groove bottom of the third sealing ring 83, and the outer wall of the third sealing ring 83 abuts against the groove wall of the communicating groove 25.

[0057] With reference to Figure 1 and Figure 6The special-structure stainless steel magnetic control gate valve further comprises a key assembly 7. The key assembly 7 comprises a mounting seat 71 and a magnetic ring 72. The mounting seat 71 is used for being connected to the upper end of the buckle cap 3, the upper end of the buckle cap 3 is coaxially fixedly connected with the third boss 36, the lower end of the mounting seat 71 is coaxially provided with a second groove 711, the second groove 711 is used for embedding the third boss 36, the outer periphery of the upper end of the third boss 36 is provided with a third round corner 361, and the third round corner 361 is used for abutting against the groove wall of the second groove 711. The lower end of the mounting seat 71 is coaxially provided with a ring groove 712, the magnetic ring 72 is embedded in the ring groove 712, and the magnetic ring 72 repels the magnet 42. The lower end of the mounting seat 71 is fixedly connected with a clamping block 73, the two clamping blocks 73 are symmetrically distributed along the direction perpendicular to the axis of the mounting seat 71, and the axes of the two clamping blocks 73 are coplanar with the axis of the mounting seat 71. The upper end of the buckle cap 3 is provided with a clamping groove 37, the number of the clamping grooves 37 is the same as that of the clamping blocks 73 and one-to-one corresponds, the clamping blocks 73 are embedded in the clamping grooves 37, the outer wall of the clamping block 73 is in close contact with the groove wall of the clamping groove 37, and the side, away from the axis of the third boss 36, of the clamping groove 37 penetrates the third boss 36.

[0058] The key assembly 7 further comprises a rotating rod 74 and a lifting ring 75, the upper end of the mounting seat 71 is provided with a through hole 713, the axis of the through hole 713 is horizontal, the axis of the through hole 713 is coplanar with the axis of the mounting seat 71, the rotating rod 74 is coaxially and slidingly embedded in the through hole 713, the rotating rod 74 is provided with a mounting hole 741 on one side along the axis of the rotating rod 74, and the lifting ring 75 is embedded in the mounting hole 741. The outer periphery of the other end of the rotating rod 74 is fixedly connected with a limiting ring 742, and the outer periphery of one end, close to the lifting ring 75, of the limiting ring 742 is provided with a second chamfer 7421.

[0059] The implementation principle of the special-structure stainless steel magnetic control gate valve in the embodiment of the present application is as follows: in the assembly process, the third sealing ring 83 is embedded in the third sealing groove 62, the upper end of the valve rod 6 is inserted through the communication groove 25 and then extends out of the valve cover 2, so that the abutting plate 61 abuts against the groove bottom of the first stepped groove 26, the abutting ring 45 is sleeved on the outer periphery of the valve rod 6, one end of the abutting ring 45 abuts against the surface of the abutting plate 61, away from the first stepped groove 26, and the other end of the abutting ring 45 is embedded in the third fixed groove 28, so that the relative fixation of the valve rod 6 and the valve rod 6 along the axis direction of the valve rod 6 is realized.

[0060] The gate plate 5 is fixedly connected to the lower end of the valve rod 6, the lower end of the gate plate 5 is inserted through the second connecting groove 121, the first rotating groove 113 and the connecting passage 112 and then is embedded in the second rotating groove 114. The first sealing ring 81 is embedded in the first sealing groove 122, and the connecting ring 22 is threadedly connected in the second connecting groove 121, so that the relative fixation of the valve cover 2 and the valve body 1 is realized.

[0061] The blocking ring 41 is embedded in the first fixed groove 38, the second sealing ring 82 is embedded in the second sealing groove 232, the first step groove 26 is embedded in the third connecting groove 31, the blocking ring 41 is embedded in the second fixed groove 234 when the second fixed groove 234 is opposite to the first fixed groove 38, and the relative fixation of the cap 3 and the valve cover 2 along the axis direction of the valve cover 2 is realized. The upper end of the valve rod 6 is embedded in the limiting groove 35, the valve rod 6 and the cap 3 are circumferentially fixed, the pin 43 is embedded in the positioning groove 34 under the action of the reset member 44, and the circumferential fixation of the valve cover 2 and the cap 3 is realized.

[0062] In use, the mounting seat 71 is close to the cap 3, the third boss 36 is embedded in the second groove 711, the clamping block 73 is aligned with the clamping groove 37, the lower end of the mounting seat 71 abuts against the upper end of the cap 3, the magnet 42 slides away from the groove bottom of the positioning groove 34 under the action of the magnetic ring 72, the pin 43 is pushed to overcome the elastic force of the reset member 44 to separate from the positioning groove 34, the circumferential fixation of the cap 3 and the valve cover 2 is released, the rotating rod 74 is rotated, the mounting seat 71 is rotated, the cap 3 is rotated, the valve rod 6 is rotated, the shutter 5 is rotated, and the communication of the connecting channel 112 is realized.

[0063] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A special structure of stainless steel magnetic control gate valve, characterized in that: The utility model provides a valve, including valve body (1), valve cover (2), baffle ring (41), buckle cap (3), valve rod (6), abutting ring (45) and flap (5), valve body (1) is equipped with connecting channel (112), valve cover (2) lower end is connected on valve body (1) upper end, buckle cap (3) lower end is equipped with third connecting groove (31), valve cover (2) upper end is embedded in third connecting groove (31), and the groove wall of third connecting groove (31) is equipped with first fixed groove (38), and the outer periphery of valve cover (2) is equipped with second fixed groove (234), baffle ring (41) is embedded in first fixed groove (38) and second fixed groove (234), flap (5) rotates and is embedded in connecting channel (112) to realize the on-off of connecting channel (112), and the rotation axis of flap (5) is vertical, and valve rod (6) lower end is connected in flap (5), and valve cover (2) is equipped with communicating groove (25), and the groove bottom of third connecting groove (31) is equipped with limiting groove (35), and valve rod (6) upper end passes through communicating groove (25) and then is embedded in limiting groove (35), and the outer wall of one end of valve rod (6) embedded in limiting groove (35) is compatible with the shape of limiting groove (35), and abutting ring (45) is connected to the outer periphery of valve rod (6), and the groove wall of communicating groove (25) is equipped with third fixed groove (28), and the outside of abutting ring (45) is embedded in third fixed groove (28).

2. The special construction stainless steel magnetic drive gate valve according to claim 1, characterized in that: Also including second sealing ring (82), the outer periphery of valve cover (2) is equipped with second sealing groove (232), and second sealing ring (82) is embedded in second sealing groove (232), and the outer wall of second sealing ring (82) is abutted to the groove wall of third connecting groove (31).

3. The special construction stainless steel magnetic drive gate valve according to claim 1, characterized in that: Also including third sealing ring (83), the outer periphery of valve rod (6) is equipped with third sealing groove (62), and third sealing ring (83) is embedded in third sealing groove (62), and the outer wall of third sealing ring (83) is abutted to the groove wall of communicating groove (25).

4. The special construction stainless steel magnetic drive gate valve according to claim 3, characterized in that: The third sealing groove (62) is equipped with several, and several third sealing grooves (62) are distributed along the axis of valve rod (6), and the number of third sealing ring (83) is same with the number of third sealing groove (62) and one-to-one correspondence.

5. The special construction stainless steel magnetic drive gate valve according to claim 1, characterized in that: The lower end of valve cover (2) is connected with connecting ring (22), and the upper end of valve body (1) is equipped with second connecting groove (121), and connecting ring (22) is screwed in second connecting groove (121).

6. The special construction stainless steel magnetic drive gate valve according to claim 5, characterized in that: Also including first sealing ring (81), the groove wall of second connecting groove (121) is equipped with first sealing groove (122) near one end of valve cover (2), and first sealing ring (81) is embedded in first sealing groove (122), and the inner wall of first sealing ring (81) is abutted to the outer wall of connecting ring (22), and the lower end of valve cover (2) is abutted to first sealing ring (81).

7. The special construction stainless steel magnetic drive gate valve according to claim 1, characterized in that: The application also comprises a pin (43), a reset member (44), a magnet (42) and a key assembly (7); the third connecting groove (31) is provided with a positioning groove (34); the magnet (42) is slidingly embedded in the positioning groove (34); the sliding direction of the magnet (42) is vertical; the upper end of the valve cover (2) is provided with a sliding groove (233); the distance between the axis of the sliding groove (233) and the rotating axis of the valve rod (6) is equal to the distance between the axis of the positioning groove (34) and the rotating axis of the valve rod (6); the sliding groove (233) is provided with two; the two sliding grooves (233) are distributed at intervals around the rotating axis of the valve rod (6); the number of the pin (43) and the reset member (44) is the same as that of the sliding groove (233) and one-to-one correspondence; the pin (43) is slidingly embedded in the sliding groove (233); the sliding direction of the pin (43) is parallel to the sliding direction of the magnet (42); the upper end of the pin (43) abuts against the magnet (42); the reset member (44) is connected between the valve cover (2) and the pin (43); the reset member (44) makes the pin (43) have the tendency to be embedded in the positioning groove (34); the positioning groove (34) is provided with a plurality of; the plurality of positioning grooves (34) are divided into two groups; the two groups of positioning grooves (34) correspond to the two sliding grooves (233); the number of the magnet (42) is the same as that of the positioning groove (34) and one-to-one correspondence; the outer wall of the magnet (42) is fitted with the groove wall of the positioning groove (34); the key assembly (7) is used for being connected to the upper end of the buckle cap (3); the key assembly (7) is circumferentially fixed with the buckle cap (3); the key assembly (7) is connected with a magnetic ring (72); the magnetic ring (72) and the magnet (42) repel each other.

8. The special construction stainless steel magnetic drive gate valve according to claim 7, characterized in that: The diameter of the positioning groove (34) is greater than the diameter of the sliding groove (233); the outer wall of the magnet (42) is fitted with the groove wall of the positioning groove (34).

9. The special construction stainless steel magnetic drive gate valve according to claim 7, characterized in that: The outer periphery of one end of the pin (43) close to the magnet (42) is provided with a second round corner (431); the second round corner (431) is used for abutting against the groove wall of the positioning groove (34).

10. The special construction stainless steel magnetic drive gate valve according to claim 1, characterized in that: The inner wall of the side of the connecting channel (112) away from the valve cover (2) is provided with a second rotating groove (114); the inner wall of the side of the connecting channel (112) close to the valve cover (2) is provided with a first rotating groove (113); the shutter (5) is rotatingly embedded in the first rotating groove (113) and the second rotating groove (114); the outer wall of the shutter (5) is fitted with the groove wall of the first rotating groove (113) and the groove wall of the second rotating groove (114); the lower end of the shutter (5) is taperedly arranged away from the valve cover (2).

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