Valve with double ball valves

Abstract

The double-ball-valve valve comprises two ball valves which are arranged side by side and connected in a clamped mode, each ball valve comprises a valve body, a valve rod and a handle, each valve body comprises an abutting face provided with a clamping structure, and the valve rods enable the ball valves to be switched between a through-flow state and a closed state in the rotating process of the valve rods along the axes of the valve rods. The ball valve further comprises a first mistaken touch preventing device and a second mistaken touch preventing device, the first mistaken touch preventing device comprises a rotating piece and a sliding piece, the rotating piece and the valve rod are fixed, a clamping groove is formed in the rotating piece, and in the rotating process of the rotating piece, the clamping groove can be connected with the sliding piece in a clamped mode and push the sliding piece to reciprocate in the first direction. The sliding piece extends out of the abutting face and is inserted into the other ball valve when the ball valve is in the through-flow state. And the second mistaken touch prevention device is used for locking the handle in a closed state when the two ball valves are separated. The two mistaken touch prevention devices carry out multiple protection on the ball valve, and misoperation on the valve is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a double ball valve. Background Art

[0002] The double ball valve is a combination of two ball valves. When a pipe connected to a ball valve has a problem and needs to be removed or repaired, the other ball valve is closed, and the ball valve and pipe with the problem are removed and repaired, which saves the work of plugging the leak and is easy to use. In order to quickly assemble the two ball valves, the two ball valves are often connected together in the form of a snap connection. The existing snap connection form is that a snap groove is set at one end of one ball valve, and the snap groove is set around the fluid channel on the ball valve. A snap buckle is set at one end of the other ball valve, and the snap buckle is inserted from the opening of the snap groove and rotated to complete the snap connection. After the snap connection is completed, the two ball valves are rotated to the open state.

[0003] The existing double ball valve has a low safety factor and lacks an anti-disassembly device. When the two ball valves are in the open state, the two ball valves are separated, which will cause fluid leakage. In order to solve this problem, the Chinese patent application number CN202211424375.1 sets three anti-mistaken touch devices to prevent the two ball valves from separating in the open state, but this ball valve requires a special shape of the limit seat and the position of the handle to match, and its applicability is not high. Summary of the invention

[0004] In order to overcome the above disadvantages, the purpose of the present invention is to provide a double ball valve, which provides multiple protections for the ball valve and avoids misoperation of the valve.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a double ball valve, including two ball valves arranged side by side and clamped, each of the ball valves includes a valve body, a valve stem and a handle, the valve body includes an abutment surface with a clamping structure, the valve stem allows the ball valve to switch between a flow state and a closed state during the rotation process along its own axis, and the ball valve also includes: a first anti-accidental-touch device, the first anti-accidental-touch device comprising a rotating member and a sliding member, the rotating member and the valve stem are fixed and a clamping groove is provided on the rotating member, during the rotation of the rotating member, the clamping groove can be clamped with the sliding member and push the sliding member to reciprocate along a first direction, and the sliding member extends out of the abutment surface and inserts into another ball valve when the ball valve is in a flow-through state; A second anti-accidental touch device, the second anti-accidental touch device is used to lock the handle in a closed state when the two ball valves are separated, the second anti-accidental touch device includes a locking mechanism 1 and a positioning groove 1, the locking mechanism 1 is arranged on the valve body, the positioning groove 1 is arranged on the handle, when the ball valve is in a closed state, the locking mechanism 1 can be stuck in the positioning groove 1. The beneficial effects of the present invention are: The two anti-accidental-touch devices are linked to the handle. Through these two anti-accidental-touch devices, the safety of the ball valve is greatly improved, ensuring that the ball valve can be separated only in the closed state to avoid fluid leakage.

[0006] During the rotation process, the rotating part of the first anti-mistouch device can be connected through the card slot and the sliding frame to push the sliding part to slide, so as to ensure that the sliding part is driven to slide during the opening and closing process of the ball valve. The sliding part can extend out of the valve body and insert into another ball valve to limit the relative rotation between the two ball valves, thereby preventing the two ball valves from separating and leaking.

[0007] The second anti-misoperation device ensures that the handle can be freely rotated only when the two ball valves are in the clamped state. When the two ball valves are separated, that is, one end of a single ball valve is a free end, the anti-misoperation device will temporarily limit the handle to the closed state of the ball valve, thereby reducing the possibility of misoperation of the ball valve when the ball valve is not properly connected.

[0008] Further, the rotating member includes a first part, the side wall of the first part is an arc surface coaxial with the valve stem, the first part is connected to a second part protruding from its side wall, and the joint between the first part and the second part is provided with an inward recess to form the slot; the sliding member is slidably connected to the valve body and is located on one side of the first part, the sliding member includes a clamping part, the clamping part includes a first rod body and a first boss and a second boss arranged along the circumference of the first rod body, and during the rotation of the rotating member, the clamping groove can be clamped with the first boss and drive the sliding member to move back and forth along the first direction to extend or retract the valve body. During the rotation of the rotating member, the sliding member can be pushed to slide through the slot and the first boss, and at the same time, when the slot is separated from the first boss, the position of the sliding member can be limited by the first boss and the second boss. In this way, it is ensured that during the opening and closing process of the ball valve, the sliding member is driven to slide. When the ball valve is in the flow state, the first part limits the position of the first boss and the second boss, and the sliding member can extend out of the valve body and insert into another ball valve to limit the relative rotation between the two ball valves to prevent the two ball valves from separating and leaking; when the ball valve is in the closed state, the sliding member is pulled back by the slot to separate the valve body and the other ball valve, and the two ball valves can be separated for maintenance. The setting of the anti-mis-touch mechanism ensures that the two ball valves can be separated only in the closed state, effectively avoiding misoperation and leakage.

[0009] Furthermore, the slot is triangular, the slot includes a first slope and a second slope, the first boss includes a third slope and a fourth slope, and the third slope and the fourth slope can respectively abut against the first slope and the second slope.

[0010] The cooperation of the two inclined surfaces allows the slot to push the first boss during rotation, and through the cooperation of the first inclined surface and the third inclined surface, the sliding member is pushed to slide in the positive direction along the first direction; when the rotating member rotates clockwise, the cooperation of the second inclined surface and the third inclined surface pushes the sliding member to slide in the negative direction along the first direction.

[0011] Furthermore, the first part and the second part are both fan-shaped and coaxial with the valve stem, and the outer radius of the second part is greater than the outer radius of the first part. Two fan-shaped parts with different outer radii form the rotating part, which facilitates the processing of the rotating part.

[0012] Specifically, the first boss and the second boss are located at both ends of the first rod, the first rod is tangent to the side wall of the first part, the second rod is disposed on the side of the first boss away from the first rod, and the radius of the second rod is smaller than the radius of the first rod. The first part uses its own curvature to allow part of the first part to be located between the first boss and the second boss. At this time, due to the limitation of the first part, the sliding member cannot continue to slide in the ground direction. The third rod makes way for the rotation of the second part.

[0013] Further, the locking mechanism 1 includes a positioning bead 1, a positioning pin 1 and a reset member 1, the positioning bead 1 can reciprocate along the valve body in the second direction, one end of the positioning pin 1 extends out of an abutment surface, and the positioning pin 1 can reciprocate along the valve body in the first direction; When the two ball valves are connected, the positioning pin 1 can be pushed by the other ball valve to approach the reset member 1, and the positioning pin 1 can provide a clearance space for the falling of the positioning bead 1; when the two ball valves are separated, the positioning pin 1 is pushed away from the reset member 1 by the reset member 1, and the positioning pin 1 can push the positioning bead 1 to move upward and embed part of the positioning bead 1 into the positioning groove 1. Furthermore, the valve body is provided with a slide groove 1 for the positioning pin 1 to slide and a slide groove 2 for the positioning bead 1 to slide, the slide groove 1 and the slide groove 2 are vertically arranged and communicate with each other, and the depth of the slide groove 2 is less than the diameter of the positioning bead 1. The depth of the slide groove 2 ensures that when there is no clearance space 1 communicating with it, the positioning bead 1 will inevitably protrude partly from the slide groove 2, that is, from the valve body.

[0014] The positioning pin 1 includes a sliding part 1 that matches the slide groove 1. The middle of the sliding part 1 is recessed inward along the circumferential direction to form a groove 1. When the groove 1 moves to the bottom of the slide groove 2, the groove 1 and the slide groove 2 are connected to form a clearance space 1 for the positioning bead 1 to be completely embedded.

[0015] Furthermore, both sides of the groove 1 are inclined surfaces, and the opening of the groove 1 is a flared structure, so that the flared inclined surface facilitates the rolling of the positioning bead 1 and the separation of the two.

[0016] Furthermore, the ball valve also includes a third anti-accidental touch device, which is used to lock the handle in the flow state and the closed state. The third anti-accidental touch device includes a locking mechanism 2 and a positioning groove 2. The locking mechanism 2 is arranged on the handle and moves synchronously with the handle. There are two positioning grooves 2, which correspond to the flow state and the closed state of the ball valve respectively. The locking mechanism can be inserted into the positioning groove 2 to limit the position of the handle.

[0017] The third anti-mistaken-touch device moves synchronously with the handle and is arranged on the handle so as not to be lost. The device must be pushed by external force to complete unlocking, thereby avoiding mis-touch of the handle and mis-operation of the ball valve.

[0018] Further, the second locking mechanism includes a second positioning bead, a second positioning pin and a second reset member. The second positioning bead can move back and forth along the handle in the second direction. The second positioning pin can move in the horizontal direction along the handle and be reset under the push of the second reset member. The second positioning pin approaches the second reset member under the push of an external force. At this time, the second positioning pin can provide a second clearance space for the upward movement of the second positioning bead. When the second positioning pin moves away from the second reset member under the drive of the second reset member, the second positioning pin can push the second positioning bead to move downward and confine part of the second positioning bead within the second positioning groove.

[0019] When the handle is turned, the positioning pin 2 must be pushed by external force to overcome the thrust provided by the reset member 2, so that the positioning pin 2 moves to a position that provides space 2 for the positioning bead 2 to move upward. At this time, the handle can be pushed again to use the positioning groove 2 to move the positioning bead 2 upward to slide out of the positioning groove 2, thereby unlocking the handle. When the positioning bead 2 reaches the positioning groove 2, the external force releases the positioning pin 2, and the positioning pin 2 is reset under the drive of the reset member 2. At this time, the positioning bead 2 moves downward under the force of gravity and the positioning pin 2 and is partially stuck in the positioning groove 2. The positioning pin 2 returns to the initial position and limits the upward movement of the positioning bead 2, thereby locking the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a ball valve in an embodiment of the present invention; Figure 2 A side view of a ball valve in an embodiment of the present invention; Figure 3 The ball valve is in the flow state. Figure 2 AA line section view; Figure 4 The ball valve is in the closed state. Figure 2 AA line section view; Figure 5 It is a schematic structural diagram of a rotating member in an embodiment of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of a sliding member in an embodiment of the present invention; Figure 7 for Figure 2 Sectional view along the midline BB; Figure 8 4 is a cross-sectional view of a third anti-mistouch device in an embodiment of the present invention.

[0021] In the figure: 1. Valve body; 11. Sliding channel; 12. Positioning hole; 13. Abutment surface; 141. Slide groove 1; 142. Slide groove 2; 151. Slide groove 3; 152. Slide groove 4; 2. Valve stem; 3. Handle; 4. The first device to prevent accidental touch; 41, rotating member; 411, first part; 412, second part; 413, slot; 4131, first inclined surface; 4132, second inclined surface; 42, sliding member; 421, first rod; 422, first boss; 4221, third inclined surface; 4222, fourth inclined surface; 423, second boss; 424, second rod; 425, third rod; 5. Second accidental touch prevention device; 51. a positioning bead; 52. a positioning pin; 521. a groove; 53. a reset member; 54. a positioning groove; 6. The third device to prevent accidental touch; 61. Two positioning beads; 62. Two positioning pins; 621. Two grooves; 63. Two reset members; 64. Two positioning grooves. DETAILED DESCRIPTION The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See attached Figure 1 and attached Figure 2 As shown, a double ball valve of the present invention comprises two ball valves arranged side by side and connected, each ball valve comprises a valve body 1, a valve stem 2 and a handle 3, the valve body 1 comprises an abutting surface 13, a clamping structure is arranged on the abutting surface 13, and the clamping structures of the two balls are matched with each other to realize the clamping of the two ball valves. When the abutting surfaces 13 of the two ball valves are connected, one ball valve is rotated to realize the clamping of the two clamping structures.

[0023] The valve stem 2 and the handle 3 are fixedly connected. The handle 3 is located on the outside of the valve body 1. The valve stem 2 is inserted into the valve body 1 and is fixedly connected to a ball. When the handle 3 drives the ball to rotate through the valve stem 2, the ball valve is switched between a flow state and a closed state. The rotation angle of the handle 3 is 90°.

[0024] The ball valve also includes a first anti-touch device 4 and a second anti-touch device 5. The first anti-touch device 4 is used to plug the two ball valves when the ball valve is in a flow state to prevent the two ball valves from rotating relative to each other and separating. The second anti-touch device 5 allows the two ball valves to rotate freely only when they are connected, and locks the ball valve in a closed state when it is separated from the other ball valve. Both anti-touch devices are linked to the handle 3. Through these two anti-touch devices, the safety of the ball valve is greatly improved, ensuring that the ball valve can be separated only in a closed state to avoid fluid leakage.

[0025] See attached Figure 3 and attached Figure 4 As shown, the first anti-mistouch device 4 includes a rotating member 41 and a sliding member 42. The rotating member 41 and the valve stem 2 are fixed and a card slot 413 is provided on the rotating member 41. During the rotation of the rotating member 41, the card slot 413 can engage with the sliding member 42 and push the sliding member 42 to reciprocate along the first direction (fluid movement direction). When the ball valve is in a flow-through state, the sliding member 42 extends out of the abutment surface 13 and is inserted into another ball valve.

[0026] See attached Figure 5 As shown, the rotating member 41 is fixed on the valve stem 2, and the rotating member 41 includes a first part 411. The side wall of the first part 411 is an arc surface coaxial with the valve stem 2. The first part 411 is connected to the second part 412 protruding from its side wall, and an inwardly recessed groove 413 is provided at the joint between the first part 411 and the second part 412.

[0027] The sliding member 42 is slidably connected to the valve body 1 and is located on one side of the first part 411. The sliding member 42 includes a clamping portion, which includes a first rod body 421 and a first boss 422 and a second boss 423 extending outward along the circumference of the first rod body 421. During the rotation of the rotating member 41, the clamping groove 413 can be clamped with the first boss 422 to drive the sliding member 42 to reciprocate along the first direction. When the ball valve is in a flow-through state, the clamping groove 413 is disengaged from the first boss 422, and part of the sliding member 42 extends out of the abutting surface of the valve body 1, and parts of the first boss 422 and the second boss 423 abut against the side wall of the first part 411. At this time, a limiting groove is formed between the first boss 422 and the second boss 423, and part of the first part 411 is located in this limiting groove to limit the position of the sliding member 42 to prevent the sliding member 42 from moving. When the ball valve is in a closed state, the clamping groove 413 is clamped with the first boss 422 and pushes the sliding member 42 to retract into the valve body 1. Only then can the two ball valves be rotated and separated.

[0028] See attached Figure 3 As shown, when the ball valve is in the flow-through state, the sliding member 42 can extend out of the valve body 1 and insert into another ball valve to limit the relative rotation between the two ball valves to prevent the two ball valves from separating and leaking; see the attached Figure 4As shown, when the ball valve is in the closed state, the sliding member 42 is pulled back into the valve body 1 by the clamping groove 413, and can only be separated from the other ball valve. The first anti-misoperation device 4 is set to ensure that the two ball valves can be rotated and separated only in the closed state, effectively avoiding misoperation and leakage.

[0029] In one embodiment, see the attached Figure 5 As shown, the first part 411 and the second part 412 are both fan-shaped coaxial with the valve stem 2, and the outer radius R2 of the second part 412 is greater than the outer radius R1 of the first part 411. The first part 411 and the second part 412 are both 90°, that is, the two fan-shaped rings are spliced ​​in the horizontal plane to form the rotating member 41. Of course, the first part 411 can also be a circular ring, and the second part 412 is a convex block protruding along the side wall of the first part 411. At this time, the rotating member 41 can also push the sliding member 42 through the slot 413, and the position of the sliding member 42 is limited by the side wall of the arc of the first part 411.

[0030] See attached Figure 5 As shown, the slot 413 is triangular and is opened inward (toward the valve stem 2) along the junction of the side walls of the first part 411 and the second part 412. The slot 413 includes a first inclined surface 4131 and a second inclined surface 4132. The first inclined surface 4131 is connected to the side wall of the second part 412, and the second inclined surface 4132 is connected to the side wall of the first part 411. Figure 6 As shown, the first boss 422 includes a third inclined surface 4221 and a fourth inclined surface 4222, and the third inclined surface 4221 and the fourth inclined surface 4222 can respectively abut against the first inclined surface 4131 and the second inclined surface 4132. When the slot and the first boss 422 are engaged, the first inclined surface 4131 and the third inclined surface 4221 have the same inclination direction, and the third inclined surface 4221 and the fourth inclined surface 4222 have the same inclination direction.

[0031] The rotation direction of the rotating member 41 is shown in the attached Figure 4 As shown by the arrow, when the rotating member 41 rotates clockwise, the first inclined surface 4131 and the third inclined surface 4221 cooperate to push the sliding member 42 to slide downward along the first direction; when the rotating member 41 rotates counterclockwise, the second inclined surface 4132 and the third inclined surface 4221 cooperate to push the sliding member 42 to slide downward along the first direction.

[0032] See attached Figure 3 and attached Figure 4 As shown, a sliding channel 11 is provided on the valve body 1, and the sliding member 42 reciprocates along the axis of the sliding channel 11 in the sliding channel 11. The sliding channel 11 guides the sliding of the sliding member 42, so that the sliding member 42 can only slide along the sliding channel 11.

[0033] See attached Figure 6As shown, the sliding member 42 also includes a plug-in portion, which is connected to the clamping portion, and the plug-in portion includes a second rod body 424 coaxial with the first rod body 421, and the second rod body 424 matches the sliding channel 11 and can extend out of the valve body 1 to insert another ball valve. The radius of the second rod body 424 is the same as or slightly smaller than the radius of the sliding channel 11, so that the sliding member 42 will not deviate when sliding in the sliding channel 11. The end of the second rod body 424 can extend out of the sliding channel 11. During the sliding process of the sliding member 42, the second rod body 424 is always partially located in the sliding channel 11 to play a guiding role in the sliding channel 11. The first boss 422 and the second boss 423 are located at both ends of the first rod 421. The first rod 421 is tangent to the side wall of the first portion 411. At this time, part of the first rod 421 can abut against part of the side wall of the first portion 411. The first portion 411 uses its own curvature to allow part of the first portion 411 to be located between the first boss 422 and the second boss 423. At this time, due to the limitation of the first portion 411, the sliding member 42 cannot continue to slide along the first direction.

[0034] The clamping part also includes a third rod 425 coaxial with the first rod 421. The third rod 425 is located on the side of the first boss 422 away from the first rod 421, and the radius of the third rod 425 is smaller than the radius of the first rod 421. A clearance groove is formed between the third rod 425 and the side wall of the guide channel to make way for the second part 412. When the rotating member 41 rotates to the clamping groove 413 and the first boss 422, the second part 412 will move to the corresponding position of the third rod 425. Because the outer radius of the second part 412 is greater than the outer radius of the first part 411, the radius of the third rod 425 is reduced to make way for the second part 412. At the same time, the third rod 425 connects the first boss 422 and the second rod 424 into a whole. The difference between the radius of the third rod 425 and the first rod 421 is greater than the difference between the outer radius of the first part 411 and the second part 412, providing sufficient space for the movement of the second part 412.

[0035] The valve body 1 is provided with a positioning hole 12 for inserting the sliding member 42 of another ball valve along the abutting surface 13. When one ball valve is in the flow-through state, the sliding member 42 extends out of the valve body 1 and inserts into the positioning hole 12 of the other ball valve, thereby avoiding misoperation between the two ball valves. Only when the ball valves are in the closed state will the sliding member 42 slide out of the positioning hole 12 and retract into the valve body 1, and then the two ball valves can rotate and separate from each other.

[0036] The second anti-touch device 5 can ensure that the handle 3 can be turned to the ball valve flow state only when the two ball valves are in the clamping state. That is, when the two ball valves are not connected and separated, the handle 3 can only be located in the ball valve closed state and cannot be turned to open the ball valve. At this time, the second anti-touch device 5 locks the ball valve in the closed state. See the attached Figure 2 and attached Figure 7 As shown, the second anti-incorrect touch device 5 includes a locking mechanism 1 and a positioning groove 1 54. The locking mechanism 1 is arranged on the valve body 1, and the positioning groove 1 54 is arranged on the handle 3. When the ball valve is in a closed state, the locking mechanism 1 can be inserted into the positioning groove 1 54 and the handle 3 is limited to this position.

[0037] The locking mechanism 1 includes a positioning bead 151, a positioning pin 152 and a reset member 153. The positioning bead 151 can reciprocate along the valve body 1 in the second direction (vertical direction perpendicular to the first direction). The positioning pin is slidably connected to the valve body 1 and one end can extend out of the valve body 1. The positioning pin 152 can reciprocate along the valve body 1 in the first direction. When two ball valves are connected, the positioning pin 152 can move toward the reset member 153 under the push of the abutment surface 13 of the other ball valve. At this time, the positioning pin 152 can provide a clearance space for the positioning bead 151. The positioning bead 151 moves downward under the action of gravity and is completely embedded in the valve body 1. At this time, the positioning bead 151 has no limiting effect on the handle 3, and the handle 3 can rotate.

[0038] When the two ball valves are separated, due to the limitation of the first anti-mistaken touch device 4, the two ball valves can only be separated in the closed state. At this time, the positioning pin 152 is reset away from the reset member 153 under the drive of the reset member 153. The positioning pin 152 can push the positioning bead 151 to move upward and limit part of the positioning bead 151 in the positioning groove 154, so that the handle 3 remains in the closed state of the ball valve. After the two ball valves are connected, the abutment surface 13 of one ball valve will push the positioning pin 152 of the other ball valve to move toward the reset member 153, and the positioning pin 152 moves to a position that provides a clearance space 1 for the positioning bead 151 to move upward. At this time, the positioning bead 151 is completely embedded in the valve seat and will not limit the handle 3. The double ball valve is in use and the handle 3 can be rotated freely.

[0039] See attached Figure 7As shown, the valve body 1 is provided with a slide groove 141 and a slide groove 2 142, which are arranged vertically and connected to each other, and the slide groove 141 extends along the first direction. One end of the slide groove 2 142 is located in the middle of the first slide groove 141, and the slide groove 141 and the slide groove 2 142 form a T-shaped structure. The positioning pin 1 52 slides in the slide groove 141, and the positioning bead 1 51 slides in the slide groove 2 142. The width of the slide groove 2 142 is greater than the diameter of the positioning bead 1 51, so that the positioning bead 1 51 can slide in the slide groove 2 142, and the depth of the slide groove 2 142 is less than the diameter of the positioning bead 1 51. In the initial state, part of the positioning bead 1 51 protrudes from the slide groove 2 142.

[0040] The positioning pin 1 52 includes a sliding part 1 that matches the slide groove 1 141. The middle of the sliding part 1 is recessed inward along the circumferential direction to form a groove 1 521. When the groove 1 521 moves to the right below the slide groove 2 142, the groove 1 521 and the slide groove 2 142 are connected to form a clearance space 1 for the positioning bead 1 51 to be completely embedded. When the sliding part 1 is pushed by the reset member, the extended end of the sliding part abuts the surface 13.

[0041] When the other parts of the sliding part 1 move to the right below the second slide groove 142, the other parts of the sliding part 1 close the connection between the second slide groove 142 and the first slide groove 141, and the positioning bead 1 51 can only be in the second slide groove 142. At this time, since the height of the second slide groove 142 is less than the diameter of the positioning bead 1 51, the positioning bead 1 51 will inevitably protrude part of the second slide groove 142, that is, the valve body 1 is stuck in the positioning groove 1 54. When the groove 1 521 moves to the right below the second slide groove 142, the groove 1 521 and the second slide groove 142 are connected and form a clearance space 1 with the slide groove 1 141, that is, the depth of the second slide groove 142 is lengthened, and the sum of the depth of the second slide groove 142 plus the clearance space 1 is greater than the diameter of the positioning bead 1 51, ensuring that the positioning bead 1 51 can be completely embedded in the valve body 1. At this time, the third anti-mistaken touch device 6 on the upper bottom of the handle 3 is released, and the position of the handle 3 can be adjusted at any time.

[0042] In one embodiment, see the attached Figure 7 As shown, the side wall of the groove 521 is an inclined surface, that is, the opening of the groove 521 is a flared structure. When the positioning pin 52 is reset, the positioning bead 51 can slide along the inclined surface of the flared structure of the groove 521, and the inclined surface cooperates to push the positioning bead 51 to roll, thereby reducing the hard contact between the positioning bead 51 and the positioning pin 52 and improving the service life of the positioning bead 51 and the positioning pin 52.

[0043] The reset member 53 is a spring, which is embedded in the slide slot 141, with one end of the spring abutting against the bottom of the slide slot 141, and the other end abutting against the end of the positioning pin 52. When the positioning pin 52 is retracted into the slide slot 141, the spring is in a compressed state.

[0044] In one embodiment, the ball valve further includes a third anti-inadvertent touch device 6, which is used to lock the handle 3 in a flow-through state and a closed state. At this time, a force must be applied to the third anti-inadvertent touch device 6 to unlock the handle 3 to push the handle 3 to rotate, thereby preventing the handle 3 from rotating due to an accidental collision. At this time, the three anti-inadvertent touch devices provide triple protection for the valve, thereby improving the safety of the valve.

[0045] The third anti-mistaken touch device includes a locking mechanism 2 arranged on the handle 3 of the ball valve, and the locking mechanism 2 can move synchronously with the handle 3. The valve body 1 is provided with a positioning groove 2 64 corresponding to the locking mechanism 2. There are two positioning grooves 64, which are respectively located at the first position and the second position. When the locking mechanism 2 moves to the first position or above the second position, it can be inserted into the positioning groove 2 64 at the corresponding position. At this time, the ball valve is in a flow state or a closed state.

[0046] See attached Figure 8 As shown, the locking mechanism 2 includes a positioning pin 2 62, a reset member 2 63 and a positioning bead 2 61, and the positioning bead 2 61 can reciprocate along the handle 3 in the vertical direction. The positioning pin 2 62 is slidably connected to the handle 3, and can move in the horizontal plane under the push of an external force and the reset member. The positioning pin 2 62 can approach the reset member 2 63 under the push of an external force, and at this time, the positioning pin 2 62 can provide a clearance space 2 for the upward movement of the positioning bead 2 61. When the positioning pin 2 62 is driven away from the reset member 2 63 by the reset member 2 63, the positioning pin 2 62 can push the positioning bead 2 61 to move downward and confine part of the positioning bead 2 61 in the positioning groove 2 64.

[0047] In one embodiment, the depth of the second positioning groove 64 is smaller than the radius of the second positioning bead 61, and only a small part of the second positioning bead 61 can be in the second positioning groove 64, that is, the part of the second positioning bead 61 embedded in the second positioning groove 64 is less than half of the second positioning bead 61. Such a depth of the second positioning groove 64 can ensure that the second positioning bead 61 is pushed out of the second positioning groove 64 during the rotation of the handle 3.

[0048] The handle 3 is provided with a slide groove 3 151 and a slide groove 4 152, which are perpendicular to each other and connected, one end of the slide groove 4 152 is located in the middle of the slide groove 3 151, the slide groove 3 151 is for the positioning pin 2 62 to slide, and the slide groove 4 152 is for the positioning bead 2 61 to slide. The positioning pin 2 62 has the same structure as the positioning pin 1 52, and the positioning pin 2 62 includes a sliding part 2 and a groove 2 621.

[0049] When the limiting part 2 moves to the position just above the slide groove 4 152, at the connection between the slide groove 3 151 of the limiting part 2 and the slide groove 4 152, the positioning bead 2 61 can only be in the slide groove 4 152. At this time, since the height of the slide groove 4 152 is smaller than the diameter of the positioning bead 2 61, a part of the positioning bead 2 61 will inevitably protrude from the slide groove 4 152, that is, the handle 3.

[0050] When the second groove 621 moves to the top of the fourth slide groove 152, the second groove 621 and the fourth slide groove 152 are connected and define the second clearance space with the first slide groove 141. That is, the height of the fourth slide groove 152 is lengthened, and the sum of the height of the fourth slide groove 152 and the second clearance space is greater than the diameter of the second positioning bead 61, ensuring that the second positioning bead 61 can be completely embedded in the handle 3. At this time, the external force rotates the handle 3, and the second positioning groove 64 can push the second positioning bead 61 to move up and slide out of the second positioning groove 64, releasing the fixation of the second positioning bead 61 and the second positioning groove 64, that is, releasing the positioning of the handle 3.

[0051] The side wall of the second positioning groove 64 is an inclined surface, so that the second positioning ball 61 can roll out of the second positioning groove 64 easily.

[0052] In this embodiment, the handle 3, the valve stem 2 and the rotating member 41 are an integrated part.

[0053] Initially, the two ball valves are in a separated state, and the handle 3 is in a closed state. The positioning pin 1 52 pushes the positioning bead 1 51 upwards and tightens it in the positioning groove 1 54, so that the handle 3 cannot rotate. The slot 413 on the rotating member 41 is engaged with the sliding member 42 and pulls the sliding member 42 to retract the valve body 1. When the two ball valves are engaged, the positioning pin 1 52 always presses the reset member 1 53 under the pressure of the corresponding valve body 1. At this time, the groove 1 521 is kept in a state of conduction with the groove body 2, and the positioning bead 1 51 moves downward to release the restriction on the handle 3. Press the positioning pin 2 62, and then rotate the handle 3 to slide the positioning bead 2 61 out of one positioning groove 2 64 (ball valve closed state) until the positioning bead 2 61 moves to another positioning groove 2 64 (ball valve conduction state), and release the positioning pin 2 62. The positioning bead 2 61 is pushed by the positioning pin 2 62 and embedded in the positioning groove 2 64 at this position and remains motionless. At this time, when the handle 3 drives the rotating member 41 to rotate, the locking groove 413 pushes the sliding member 42 to extend out of the valve body 1 and insert into the vacant hole, and the sliding member 42 is restricted in this position and cannot move, and the two ball valves can no longer rotate relative to each other.

[0054] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A double ball valve, comprising two ball valves arranged side by side and connected in a clamping manner, each of the ball valves comprising a valve body, a valve stem and a handle, the valve body comprising an abutment surface provided with a clamping structure, the valve stem allowing the ball valve to switch between a flow-through state and a closed state during the rotation process along its own axis, characterized in that: The ball valve also includes: a first anti-accidental-touch device, the first anti-accidental-touch device comprising a rotating member and a sliding member, the rotating member and the valve stem are fixed and a clamping groove is provided on the rotating member, during the rotation of the rotating member, the clamping groove can be clamped with the sliding member and push the sliding member to reciprocate along a first direction, and the sliding member extends out of the abutment surface and inserts into another ball valve when the ball valve is in the flow-through state; A second anti-accidental touch device, the second anti-accidental touch device is used to lock the handle in the closed state when the two ball valves are separated, the second anti-accidental touch device includes a locking mechanism 1 and a positioning groove 1, the locking mechanism 1 is arranged on the valve body, the positioning groove 1 is arranged on the handle, and when the ball valve is in the closed state, the locking mechanism 1 can be inserted into the positioning groove 1.

2. The double ball valve according to claim 1, characterized in that: The rotating member includes a first part, the side wall of the first part is an arc surface coaxial with the valve stem, the first part is connected to a second part protruding from its side wall, and the joint between the first part and the second part is provided with an inward recess to form the slot; the sliding member is slidably connected to the valve body and is located on one side of the first part, the sliding member includes a clamping part, the clamping part includes a first rod body and a first boss and a second boss extending outward along the circumference of the first rod body, and during the rotation of the rotating member, the clamping groove can be clamped with the first boss and drive the sliding member to move back and forth along the first direction to extend or retract the valve body.

3. The double ball valve according to claim 2, characterized in that: The card slot is triangular in shape and includes a first inclined surface and a second inclined surface. The first boss includes a third inclined surface and a fourth inclined surface. The third inclined surface and the fourth inclined surface can respectively abut against the first inclined surface and the second inclined surface.

4. The double ball valve according to claim 2, characterized in that: The first portion and the second portion are both fan-shaped and coaxial with the valve stem, and the outer radius of the second portion is greater than the outer radius of the first portion.

5. The double ball valve according to claim 2, characterized in that: The first boss and the second boss are located at two ends of the first rod body, the first rod body is tangent to the side wall of the first part, a second rod body is arranged on the side of the first boss away from the first rod body, and the radius of the second rod body is smaller than the radius of the first rod body.

6. The double ball valve according to claim 1, characterized in that: The locking mechanism 1 comprises a positioning bead 1, a positioning pin 1 and a reset member 1, wherein the positioning bead 1 can reciprocate along the valve body in the second direction, and the positioning pin 1 can reciprocate along the valve body in the first direction to extend the abutment surface or retract the valve body; When the two ball valves are connected, the positioning pin 1 can be pushed by the other ball valve to approach the reset member 1, and the positioning pin 1 can provide a clearance space for the falling of the positioning bead 1; when the two ball valves are separated, the positioning pin 1 is reset under the push of the reset member 1, and the positioning pin 1 can push the positioning bead 1 to move upward and embed part of the positioning bead 1 into the positioning groove 1.

7. The double ball valve according to claim 6, characterized in that: The valve body is provided with a slide groove 1 for sliding the positioning pin 1 and a slide groove 2 for sliding the positioning bead 1, the slide groove 1 and the slide groove 2 are vertically arranged and connected to each other, and the depth of the slide groove 2 is less than the diameter of the positioning bead 1; The positioning pin 1 includes a sliding part 1 that matches the slide groove 1. The middle of the sliding part 1 is recessed inward along the circumferential direction to form a groove 1. When the groove 1 moves to the bottom of the slide groove 2, the groove 1 and the slide groove 2 are connected to form a clearance space 1 for the positioning bead 1 to be completely embedded.

8. The double ball valve according to claim 7, characterized in that: Both side surfaces of the groove 1 are inclined surfaces, and the opening of the groove 1 is a flared structure.

9. The double ball valve according to claim 1, characterized in that: The ball valve also includes a third anti-accidental touch device, which is used to lock the handle in the flow state and the closed state. The third anti-accidental touch device includes a locking mechanism 2 and a positioning groove 2. The locking mechanism 2 is arranged on the handle and moves synchronously with the handle. There are two positioning grooves 2 on the valve body and they correspond to the flow state and the closed state of the ball valve respectively. The locking mechanism can be inserted into the positioning groove 2 to limit the position of the handle.

10. The double ball valve according to claim 9, characterized in that: The second locking mechanism includes a second positioning bead, a second positioning pin and a second reset member. The second positioning bead can reciprocate along the handle in the second direction. The second positioning pin can move in the horizontal direction along the handle and be reset under the push of the second reset member. The second positioning pin approaches the second reset member under the push of an external force. At this time, the second positioning pin can provide a second clearance space for the upward movement of the second positioning bead. When the second positioning pin moves away from the second reset member under the drive of the second reset member, the second positioning pin can push the second positioning bead to move downward and confine part of the second positioning bead within the second positioning groove.

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