Mistaken touch prevention mechanism of ball valve

Abstract

The utility model discloses a false touch prevention mechanism of a ball valve, the ball valve comprises a valve body, a ball body and a valve rod, the valve rod is fixedly connected with the ball body and is rotatably connected with the valve body, and the valve rod enables the ball valve to be switched between a through-flow state and a closed state in the axial rotation process of the valve rod. The mistaken touch prevention mechanism comprises a rotating part and a sliding part, the rotating part and the valve rod rotate synchronously, and the rotating part can push the sliding part to reciprocate in the first direction in the rotating process and can limit the position of the sliding part when the ball valves are in the through-flow state, so that the sliding part is limited at the position where the valve body extends out to be inserted into the other ball valve. Therefore, it is guaranteed that when the ball valves are in the through-flow state, rotation between the two ball valves is limited through the sliding piece, the two ball valves are prevented from being separated, and misoperation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to an anti-mistouch mechanism of a ball valve. Background Art

[0002] The double ball valve body is a combination of two ball valves for use. When a problem occurs with the pipe connected to the ball valve and needs to be dismantled or repaired, the two ball valves are closed, and the problematic ball valve and pipe are dismantled and repaired, eliminating the need for leak plugging work and making it easy to use. In order to quickly assemble the two ball valves, they are often connected together in the form of a rotating clip. During the operation of a single ball valve, the handle is held to rotate the ball to open and close the ball valve. After the two existing ball valves are docked, the two ball valves are still rotated and separated in the flow-through state of the ball valve, which cannot prevent accidental touch. Even if some ball valves have an anti-accidental touch structure, the structure is usually more complicated and cannot effectively prevent accidental touch. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a ball valve anti-accidental touch mechanism, which has a simple structure and can effectively prevent accidental touch.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: a ball valve anti-touch mechanism, the ball valve includes a valve body, a ball and a valve stem, the valve stem and the ball are fixedly connected and rotatably connected to the valve body, the valve stem rotates along its own axis to switch the ball valve between a flow state and a closed state, the anti-touch mechanism includes:

[0005] A rotating member fixed to the valve stem, comprising a first portion, a sidewall of the first portion being an arcuate surface coaxial with the valve stem, the first portion being connected to a second portion protruding from the sidewall thereof, and an inwardly recessed slot being provided at the interface between the first portion and the second portion;

[0006] a sliding member, the sliding member being slidably connected to the valve body and being located on one side of the first portion, the sliding member including a clamping portion, the clamping portion including a first rod body and a first boss and a second boss arranged along the circumference of the first rod body, wherein during the rotation of the rotating member, the clamping groove can be clamped with the first boss and drive the sliding member to reciprocate along the first direction to extend or retract the valve body;

[0007] When the ball valve is in a closed state, the slot is separated from the first boss, a portion of the sliding member extends out of the valve body, and a portion of the first boss and the second boss abut against the side wall of the first portion.

[0008] The beneficial effects of the present invention are:

[0009] During rotation, the rotating member pushes the sliding member through the slot and the first boss. Simultaneously, when the slot disengages the first boss, the first and second bosses limit the position of the sliding member. This ensures that during the opening and closing of the ball valve, the sliding member is driven. When the ball valve is flowing, the first portion defines the position of the first and second bosses, allowing the sliding member to extend out of the valve body and insert into the other ball valve to limit relative rotation between the two ball valves, preventing the two valves from separating and leaking. When the ball valves are closed, the sliding member is pulled back into the valve body and separated from the other ball valve by the slot, allowing the two ball valves to be separated for maintenance. The anti-touch mechanism ensures that the two ball valves can only be separated when closed, effectively preventing misoperation and leakage.

[0010] Furthermore, the slot is triangular, 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.

[0011] The cooperation of the two inclined surfaces allows the slot to push the first boss during the rotation process. Through the cooperation of the first inclined surface and the third inclined surface, the sliding part is pushed to slide in the positive direction along the first direction; when the rotating part rotates clockwise, the cooperation of the second inclined surface and the third inclined surface pushes the sliding part to slide in the negative direction along the first direction.

[0012] Furthermore, the first and second parts are both sector rings coaxial with the valve stem, and the outer radius of the second part is larger than the outer radius of the first part. Two sector rings with different outer radii form the rotating part, which facilitates the processing of the rotating part.

[0013] Furthermore, the valve body is provided with a sliding channel, and the sliding member reciprocates along the axis of the sliding channel in the sliding channel. The sliding of the sliding member in the sliding channel is guided so that the sliding member can only slide along the sliding channel.

[0014] The sliding member further includes an inserting portion connected to the clamping portion. The inserting portion includes a second rod coaxial with the first rod. The second rod mates with the sliding channel and is capable of extending out of the valve body to allow insertion of another ball valve. The radius of the second rod is the same as or slightly smaller than the radius of the sliding channel. This prevents the sliding member from deflecting when sliding within the sliding channel.

[0015] Specifically, the first and second bosses are located at opposite ends of the first rod, and the first rod is tangent to the sidewall of the first portion. The first portion utilizes its curvature to allow a portion of the first portion to lie between the first and second bosses. At this point, the slider cannot continue to slide in the ground direction due to the restriction of the first portion.

[0016] Furthermore, the engaging portion further includes a third rod coaxial with the first rod, the third rod being located on a side of the first boss away from the first rod, and having a radius smaller than that of the first rod. A clearance groove is formed between the third rod and the sidewall of the guide channel to allow space for the second portion.

[0017] Furthermore, the valve body is provided with a rotating cavity, the rotating member is embedded in the rotating cavity and rotates in the rotating cavity, the rotating cavity is connected to the sliding channel, and the rotating cavity provides space for the rotation of the rotating frame.

[0018] Furthermore, the ball valve further includes a handle fixedly connected to the valve stem. The handle, valve stem and rotating member are an integrated part, which has high stability and is easy to process.

[0019] Furthermore, the valve body is provided with a positioning hole for inserting a sliding member of another ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0021] Figure 2 Schematic diagram of the anti-accidental touch mechanism of the ball valve in the flow-through state in the embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the anti-accidental touch mechanism when the ball valve is in a closed state in an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a three-dimensional structural diagram of the handle, valve stem and rotating member in the embodiment of the utility model;

[0025] Figure 6 This is a schematic structural diagram of a rotating member in an embodiment of the present utility model;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding member in the embodiment of the present utility model.

[0027] In the picture:

[0028] 1. Valve body; 11. Sliding channel; 12. Rotating cavity; 13. Positioning hole;

[0029] 2. Valve stem;

[0030] 3. Rotating member; 31. First portion; 32. Second portion; 33. Slot; 331. First inclined surface; 332. Second inclined surface;

[0031] 4. Sliding member; 41. First rod; 42. First boss; 421. Third inclined surface; 422. Fourth inclined surface; 43. Second boss; 44. Second rod; 45. Third rod;

[0032] 5. Handle. DETAILED DESCRIPTION

[0033] 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 precise definition of the protection scope of the present invention.

[0034] See attached Figure 1 As shown in the figure, the present invention provides a ball valve anti-touch mechanism. The ball valve includes a valve body 1, a ball (not shown), and a valve stem 2. The valve stem 2 is fixedly connected to the ball and rotatably connected to the valve body 1. The valve stem 2 drives the ball to rotate synchronously. The valve stem 2 rotates along its own axis to switch the ball valve between a flow-through state and a closed state. The rotation angle of the valve stem 2 is 90°. When the valve stem 2 is in the initial position, the ball valve is in the closed state. After the valve stem 2 rotates 90°, the ball valve is in the flow-through state. The first direction below refers to the direction of liquid flow in the ball valve.

[0035] See attached Figure 2 and attached Figure 3 As shown, the accidental touch prevention mechanism includes a rotating member 3 and a sliding member 4. The rotating member 3 rotates synchronously with the valve stem 2. During rotation, the rotating member 3 pushes the sliding member 4 to reciprocate in a first direction. Furthermore, when the ball valve is in the flow-through state, the rotating member 3 limits the position of the sliding member 4, confining the sliding member 4 to a position extending out of the valve body 1 and inserting into the other ball valve. This ensures that when the ball valves are in the flow-through state, the sliding member 4 limits rotation between the two ball valves, preventing separation and preventing accidental operation.

[0036] See attached Figure 5 and attached Figure 6 As shown, the rotating member 3 is fixed on the valve stem 2, and the rotating member 3 includes a first part 31. The side wall of the first part 31 is an arc surface coaxial with the valve stem 2. The first part 31 is connected to the second part 32 protruding from its side wall. An inwardly recessed slot 33 is provided at the junction of the first part 31 and the second part 32.

[0037] The slider 4 is slidably connected to the valve body 1 and is located on one side of the first portion 31. The slider 4 includes a snap-fit ​​portion, which includes a first rod 41 and a first boss 42 and a second boss 43 arranged along the circumference of the first rod 41. During rotation of the rotating member 3, the snap-fit ​​groove 33 can snap-fit ​​with the first boss 42 to drive the slider 4 to reciprocate in the first direction. When the ball valve is in the flow-through state, the snap-fit ​​groove 33 disengages from the first boss 42, partially extending the slider 4 out of the valve body 1, and portions of the first boss 42 and the second boss 43 abut against the sidewall of the first portion 31. At this time, a limiting groove is formed between the first boss 42 and the second boss 43. Part of the first portion 31 is located within this limiting groove, limiting the position of the slider 4 and preventing it from moving. When the ball valve is in the closed state, the snap-fit ​​groove 33 snaps into the first boss 42 and pushes the slider 4 back into the valve body 1, at which point the two ball valves can rotate and separate.

[0038] In this embodiment, the sliding member 4 cooperates with the rotating member 3. During the rotation process, the rotating member 3 can push the sliding member 4 to slide through the slot 33 and the first boss 42. At the same time, when the slot 33 is separated from the first boss 42, the position of the sliding member 4 is limited by the first boss 42 and the second boss 43. In this way, the sliding member 4 is driven to slide during the opening and closing process of the ball valve. Figure 2 As shown, when the ball valve is in the flow state, the sliding member 4 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 3 As shown, when the ball valve is closed, the slider 4 is pulled back into the valve body 1 by the retaining groove 33, and the other ball valve is separated. At this time, the two ball valves can be separated for maintenance. The provision of the anti-accidental touch mechanism ensures that the two ball valves can only be separated in the closed state, effectively preventing misoperation and leakage.

[0039] In one embodiment, see the attached Figure 6 As shown, the first portion 31 and the second portion 32 are both sector rings coaxial with the valve stem 2, and the outer radius R2 of the second portion 32 is larger than the outer radius R1 of the first portion 31. The first portion 31 and the second portion 32 are both 90 degrees apart, that is, the two sector rings are spliced ​​in the horizontal plane to form the rotating member 3.

[0040] In one embodiment, the first portion 31 is a circular ring, and the second portion 32 is a protruding block along the sidewall of the first portion 31. In this case, the rotating member 3 can also push the sliding member 4 through the slot 33, and the position of the sliding member 4 is limited by the arc sidewall of the first portion 31.

[0041] See attached Figure 4 and attached Figure 6As shown, the slot 33 is triangular and is opened inward (toward the valve stem 2) along the junction of the side walls of the first portion 31 and the second portion 32. The slot 33 includes a first inclined surface 331 and a second inclined surface 332. The first inclined surface 331 is connected to the side wall of the second portion 32, and the second inclined surface 332 is connected to the side wall of the first portion 31. Figure 4 and attached Figure 7 As shown, the first boss 42 includes a third inclined surface 421 and a fourth inclined surface 422. The third inclined surface 421 and the fourth inclined surface 422 can respectively abut against the first inclined surface 331 and the second inclined surface 332. When the slot and the first boss 42 are engaged, the first inclined surface 331 and the third inclined surface 421 have the same inclination direction, and the third inclined surface 421 and the fourth inclined surface 422 have the same inclination direction. Figure 2 and attached Figure 3 As shown in the space arrow in the figure, when the rotating member 3 rotates clockwise, the first inclined surface 331 and the third inclined surface 421 cooperate to push the sliding member 4 to slide downward along the first direction; when the rotating member 3 rotates counterclockwise, the second inclined surface 332 and the third inclined surface 421 cooperate to push the sliding member 4 to slide downward along the first direction.

[0042] See attached Figure 2 As shown, the valve body 1 is provided with a sliding channel 11, and the sliding member 4 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 4, so that the sliding member 4 can only slide along the sliding channel 11.

[0043] See attached Figure 2 and attached Figure 7 As shown, the sliding member 4 also includes a plug-in portion connected to the clamping portion. The plug-in portion includes a second rod 44 coaxial with the first rod 41. The second rod 44 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 44 is the same as the radius of the sliding channel 11 or slightly smaller than the swing radius of the sliding channel 11. In this way, the sliding member 4 will not deviate when sliding within the sliding channel 11. The end of the second rod 44 can extend out of the sliding channel 11. During the sliding process of the sliding member 4, the second rod 44 is always partially located within the sliding channel 11, serving as a guide within the sliding channel 11.

[0044] The first and second bosses 42, 43 are located at opposite ends of the first rod 41. The first rod 41 is tangent to the sidewall of the first portion 31, allowing a portion of the first rod 41 to abut against the sidewall of the first portion 31. The curvature of the first portion 31 allows a portion of the first portion 31 to lie between the first and second bosses 42, 43. At this point, the slider 4 cannot continue to slide in the ground direction due to the restraint of the first portion 31.

[0045] The engaging portion also includes a third rod 45 coaxial with the first rod 41. The third rod 45 is located on the side of the first boss 42 away from the first rod 41, and its radius is smaller than that of the first rod 41. A clearance groove is formed between the third rod 45 and the sidewall of the guide channel to make way for the second portion 32. When the rotating member 3 rotates until the slot 33 engages the first boss 42, the second portion 32 moves to the corresponding position of the third rod 45. Because the outer radius of the second portion 32 is larger than that of the first portion 31, the radius of the third rod 45 is reduced to make way for the second portion 32. Simultaneously, the third rod 45 connects the first boss 42 and the second rod 44 into a single unit. The difference between the radius of the third rod 45 and the first rod 41 is greater than the difference between the outer radius of the first portion 31 and the second portion 32, providing sufficient space for the second portion 32 to move.

[0046] In one embodiment, the sliding member 4 is an integral member, which is formed in one piece.

[0047] See attached Figure 2 As shown, the valve body 1 is provided with a rotating cavity 12, the rotating member 3 is embedded in the rotating cavity 12 and rotates in the rotating cavity 12, and the rotating cavity 12 is connected to the sliding channel 11. The rotating cavity 12 provides a rotating space for the rotating member 3.

[0048] The ball valve also includes a handle 5 fixedly connected to the valve stem 2. Located outside the valve body 1, the handle 5 is rotated by hand, thereby driving the valve stem 2, the rotating member 3, and the ball to rotate synchronously. The valve body 1 is equipped with two stoppers, which abut against the handle 5 in the flow-passing and closed states, respectively. These two stoppers restrict the handle 5 to 90° rotation.

[0049] In this embodiment, the handle 5, the valve stem 2 and the rotating member 3 are an integrated part.

[0050] See attached Figure 1 As shown, a positioning hole 13 is provided on the valve body 1 for inserting the sliding member 4 of another ball valve. When one ball valve is in the flow state, the sliding member 4 extends out of the valve body 1 and inserts into the positioning hole 13 of the other ball valve to avoid misoperation between the two ball valves.

[0051] The ball valve of this embodiment incorporates an anti-accidental touch mechanism, which ensures that the two ball valves, when docked, can only rotate relative to each other and separate when in the closed position, thus enhancing safety. This anti-accidental touch mechanism utilizes a rotating member 3 and a sliding member 4. The clever coordination of the arcuate surface, the buckle, and the two bosses on the sliding member 4 allows the rotating member 3 to push the sliding member 4 and define its position. The entire anti-accidental touch mechanism is simple and compact, requiring no additional space.

[0052] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A ball valve anti-touch mechanism, comprising a valve body, a ball, and a valve stem. The valve stem is fixedly connected to the ball and rotatably connected to the valve body. The valve stem rotates along its own axis to switch the ball valve between a flow-through state and a closed state. The mechanism is characterized by: The anti-accidental touch mechanism includes: A rotating member fixed to the valve stem, comprising a first portion, a sidewall of the first portion being an arcuate surface coaxial with the valve stem, the first portion being connected to a second portion protruding from the sidewall thereof, and an inwardly recessed slot being provided at the interface between the first portion and the second portion; a sliding member, the sliding member being slidably connected to the valve body and being located on one side of the first portion, the sliding member including a clamping portion, the clamping portion including a first rod body and a first boss and a second boss arranged along the circumference of the first rod body, wherein during the rotation of the rotating member, the clamping groove can be clamped with the first boss and drive the sliding member to reciprocate along the first direction to extend or retract the valve body; When the ball valve is in a flow-through state, the slot is separated from the first boss, a portion of the sliding member extends out of the valve body, and parts of the first boss and the second boss abut against the side wall of the first portion.

2. The anti-accidental-touch mechanism of the ball valve according to claim 1, 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.

3. The anti-accidental-touch mechanism of the ball valve according to claim 1, characterized in that: The first portion and the second portion are both sector rings coaxial with the valve stem, and the outer radius of the second portion is greater than the outer radius of the first portion.

4. The anti-accidental-touch mechanism of the ball valve according to claim 1, characterized in that: The valve body is provided with a sliding channel, and the sliding member moves back and forth in the sliding channel along the axis of the sliding channel.

5. The anti-accidental-touch mechanism of the ball valve according to claim 4, characterized in that: The sliding member further includes an inserting portion connected to the clamping portion. The inserting portion includes a second rod coaxial with the first rod. The second rod matches the sliding channel and can extend out of the valve body to be inserted into another ball valve.

6. The anti-accidental-touch mechanism of the ball valve according to claim 1, characterized in that: The first boss and the second boss are located at two ends of the first rod, and the first rod is tangent to the side wall of the first portion.

7. The anti-accidental-touch mechanism of the ball valve according to claim 6, characterized in that: The clamping portion further includes a third rod coaxial with the first rod. The third rod is located on a side of the first boss away from the first rod, and a radius of the third rod is smaller than a radius of the first rod.

8. The anti-accidental-touch mechanism of the ball valve according to claim 4, characterized in that: A rotating cavity is provided on the valve body, the rotating member is embedded in the rotating cavity and rotates in the rotating cavity, and the rotating cavity is communicated with the sliding channel.

9. The anti-accidental-touch mechanism for a ball valve according to any one of claims 1 to 8, characterized in that: The ball valve further comprises a handle fixedly connected to the valve stem, and the handle, the valve stem and the rotating member are an integrated part.

10. The anti-accidental-touch mechanism of the ball valve according to claim 1, characterized in that: The valve body is provided with a positioning hole for inserting a sliding member of another ball valve.

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