Locking device of manual valve and manual valve with locking device

Abstract

The utility model discloses a locking device of a manual valve and the manual valve with the locking device, belongs to the field of manual valves, solves the problem that an existing manual valve cannot lock a screw cap when the screw cap is located at any position, and mainly adopts the technical scheme that the locking device of a movable valve and the manual valve with the locking device are provided. Comprising a shell and a containing cavity, the shell comprises a first shell and a second shell, the first shell and the second shell have a closed state and an open state, when the shell is in the closed state, the bottom wall, the side wall and the top wall of the shell form the containing cavity, and a first opening is formed in the bottom wall of the containing cavity in a penetrating mode so that interference between the neck and the bottom wall of the containing cavity can be avoided; when the shell is in the closed state, the shell can keep the rotary cover in the containing cavity, and the shell and the rotary cover can rotate relatively. The locking device is mainly used for enabling the locking device to lock the screw cap at any position.

Description

Technical Field

[0001] The utility model relates to the technical field of manual valves, in particular to a locker of a manual valve and a manual valve with the locker. Background Art

[0002] A manual valve is a control component in a pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cutoff, regulation, throttling, non-return, diversion or overflow pressure relief. In the prior art, a manual valve includes a valve body, a valve core, a driver and a rotary cover. The valve core is movably arranged inside the valve cavity. The driver is connected to the valve core and drives the valve core to move. The rotary cover is arranged on the top of the driver. The manual valve usually controls the state of the flow path in the valve body through the rotary cover. However, since the rotary cover is directly exposed to the outside world, the operator may make a mistake in operation. In order to avoid the operator from making a mistake in operating the rotary cover, a lock is usually set at the rotary cover to limit the rotation of the rotary cover.

[0003] For example, patent JP4563846B2 discloses a release valve, including a shell, a sliding valve for switching a flow path is arranged in the shell, the shell is provided with a knob for moving the sliding valve, and the sliding valve can be moved up and down in the shell by rotating the knob, and the lower side of the knob is provided with a first protrusion piece, a second protrusion piece, a third protrusion piece and a fourth protrusion piece extending in a plate shape along the circumferential surface of the knob, and adjacent protrusion pieces are formed at positions staggered by 90 degrees along the circumferential direction of the knob, one of the first to fourth protrusion pieces is provided with a knob side key hole, and the shell is provided with a shell side key hole, the knob is rotated to keep the knob side key hole and the shell side key hole overlapped, and then a padlock is installed at the knob side key hole and the shell side key hole to lock the knob, thereby preventing the knob from being misoperated by the operator.

[0004] However, in the above patent, the knob can only be locked at a specified position, and the rotary cover cannot be locked when the rotary cover is at any position. Its use is inconvenient and affects the user experience. Utility Model Content

[0005] The utility model aims to solve the problem that the existing manual valve cannot lock the rotary cover when the rotary cover is in any position. To this end, a locker of a manual valve and a manual valve with the locker are provided. The locker can lock the rotary cover at any position.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A locker for a manual valve, the manual valve comprising a valve housing, a neck located at the top end of the valve housing, and a rotary cover located on the upper side of the neck, the locker comprising:

[0008] The housing comprises a first housing and a second housing, wherein the first housing and the second housing have a closed state and an open state;

[0009] The accommodating cavity is formed inside the shell when the shell is in a closed state, and its bottom wall, side wall and top wall are formed by the shell;

[0010] A first opening is provided through the bottom wall of the accommodating cavity to avoid interference between the neck and the bottom wall of the accommodating cavity;

[0011] In the closed state, the shell can hold the rotary cover inside the accommodating cavity, and the shell and the rotary cover can rotate relative to each other.

[0012] The beneficial effects of adopting the utility model are:

[0013] When the shell described in the utility model is in a closed state, the rotary cover is inside the accommodating chamber, which can effectively prevent personnel from directly contacting the side of the rotary cover and causing the rotary cover to be misoperated by the operator, thereby enabling the flow path state of the manual valve to remain stable and improving the stability of the manual valve. At the same time, the shell can also protect the rotary cover, reduce the possibility of damage to the rotary cover, and help to increase the service life of the rotary cover; in addition, the shell is sleeved on the outside of the rotary cover and has no effect on the rotary cover, so the locker can lock the rotary cover when the rotary cover is in any position, thereby simplifying the operation difficulty of the locker and helping to improve the locking efficiency; secondly, the shell and the rotary cover can rotate relative to each other. When the rotary cover is forced to operate, only the rotation of the shell can be controlled, and there will be no interference between the shell and the rotary cover. Therefore, the rotation of the shell cannot drive the rotation of the rotary cover, that is, the rotary cover will still not rotate under forced operation, further improving the locking ability of the shell to the rotary cover, so that the manual valve maintains stable operation.

[0014] Preferably, the first shell is hingedly connected to the second shell on one side, and a locking member is provided on the other side to keep the shell in a closed state. With the above technical solution, the first shell and the second shell are hingedly connected, so that the shell can be flexibly switched between a closed state and an open state, which can simplify the difficulty of operating the shell and improve the operating efficiency of the operator; in addition, the locking member can keep the shell stably in a closed state, reduce the possibility of the shell arbitrarily leaving the closed state, improve the locking ability of the shell to the rotary cover, and reduce the risk of the rotary cover being misoperated.

[0015] Preferably, the inner sides of the first shell and the second shell are concave arc surfaces, and the side walls of the accommodating cavity are formed by the arc surfaces. By adopting the above-mentioned technical solution, the side walls are made of arc surfaces to keep the side walls smooth, which can effectively avoid the interference between the side walls and the cover, so that the shell can rotate more smoothly relative to the cover, and the rotation of the shell is prevented from driving the cover to rotate, so as to achieve the locking of the cover by the shell, and effectively prevent the cover from being misoperated. And when the cover is polygonal or has multiple protrusions or multiple grooves on the side, at this time, through the concave arc surface, it can be ensured that during the rotation of the shell, the inner side wall of the accommodating cavity will not interfere with the side of the cover, so that it can be ensured that even if the cover is polygonal or has protrusions or grooves on the side, the shell will not rotate together with the cover due to the interference between the inner side wall and the side of the cover.

[0016] Preferably, the lock member includes a perforation and a protrusion, wherein the perforation is provided on the first shell, and the protrusion is provided on the second shell, and a lock hole for installing a padlock is provided on the protrusion, and when the shell is in a closed state, the lock hole passes through the perforation together with the protrusion. By adopting the above-mentioned technical scheme, after the protrusion passes through the perforation, the padlock is installed through the lock hole, so that the first shell and the second shell can be firmly locked in the locked state, which can effectively prevent the locker from being arbitrarily separated from the locked state, and improve the safety and reliability of the locker; and in this case, even if a person maliciously operates the valve body, the locker cannot be removed from the manual valve, so that even if a person maliciously operates, it can effectively ensure that the position of the rotary cover will not change, thereby ensuring that the state of the valve body changes, and in addition, the cooperation of the perforation and the protrusion makes the unlocking and locking of the lock member simpler and more convenient, reduces the difficulty of operating the lock member, and can effectively improve the work efficiency of the operator.

[0017] The utility model also shows a manual valve with a lock, including a valve housing, a rotary cover and a lock installed on the rotary cover, wherein the lock adopts the lock of the manual valve as described in any one of the above items, and the diameter of the first opening on the bottom wall is smaller than the maximum outer diameter of the rotary cover. By adopting the above technical solution, it can be realized that after the lock of the manual valve is installed on the rotary cover, the lock will not drive the rotary cover to rotate in case of misoperation by personnel, wherein the diameter of the first opening is smaller than the maximum outer diameter of the rotary cover, which can ensure that when the housing is lifted in the axial direction of the rotary cover, the housing can form a limit with the bottom end face of the rotary cover, which can effectively prevent the housing from being separated from the rotary cover in the axial direction of the rotary cover, and improve the connection stability between the housing and the rotary cover.

[0018] Preferably, the height of the accommodating chamber is greater than the height of the rotary cover, and the minimum inner diameter of the accommodating chamber is greater than the maximum outer diameter of the rotary cover. By adopting the above-mentioned technical solution, the height of the accommodating chamber is greater than the height of the rotary cover, which can ensure that the top wall of the accommodating chamber and the top wall of the rotary cover, and the bottom wall of the accommodating chamber and the bottom wall of the rotary cover will not contact at the same time, that is, when the top wall of the accommodating chamber contacts the top wall of the rotary cover, there is a gap between the bottom wall of the accommodating chamber and the bottom wall of the rotary cover, and when the bottom wall of the accommodating chamber contacts the bottom wall of the rotary cover, there is a gap between the top wall of the accommodating chamber and the top wall of the rotary cover. Therefore, when the top walls and bottom ends of the above two are not in contact at the same time, it is possible to avoid that the contact area between the two is too large, thereby causing a large friction force between the two, and then causing the rotary cover to rotate during the rotation of the shell. Similarly, the minimum inner diameter of the accommodating chamber is smaller than the maximum outer diameter of the rotary cover, which can avoid that the side wall of the accommodating chamber and the rotary cover avoid too large a contact area, and avoid that the rotary cover is driven to rotate by the friction force between the two when the shell rotates.

[0019] Preferably, a first chamfer is provided between the side wall and the top wall of the accommodating chamber, and a second chamfer is provided between the side wall and the top wall of the rotary cover, wherein the first chamfer and the second chamfer make it impossible for the side walls and the top wall of the two to abut against each other at the same time; and / or, a third chamfer is provided between the side wall and the bottom wall of the accommodating chamber, and a fourth chamfer is provided between the side wall and the bottom wall of the rotary cover, wherein the third chamfer and the fourth chamfer make it impossible for the side walls and the bottom wall of the two to abut against each other at the same time. The above-mentioned technical scheme is adopted, and the design of the first chamfer, the second chamfer, the third chamfer and the fourth chamfer is adopted, so that the accommodating chamber and the rotary cover, and the side wall and the top wall, and the side wall and the bottom wall between the two are not in contact at the same time, thereby effectively reducing the contact area between the shell and the rotary cover, and then reducing the friction between the shell and the rotary cover, which can effectively prevent the rotary cover from being driven to rotate by the shell under the action of friction. At the same time, the first chamfer and the third chamfer can avoid stress concentration of the shell, and when a person applies an extrusion force to the outside of the shell, it is also difficult to cause deformation or damage to the shell.

[0020] Preferably, when the top wall of the accommodating chamber abuts against the top end surface of the rotary cover, there is a first gap portion separated from each other between the two; and / or, when the bottom wall of the accommodating chamber abuts against the bottom end surface of the rotary cover, there is a second gap portion separated from each other between the two. With the above-mentioned technical solution, when the shell is pressed down, the top wall of the accommodating chamber abuts against the top end surface of the rotary cover, and the first gap portion can reduce the contact area between the top wall and the rotary cover, ensuring that the top ends of the two do not fit completely, thereby reducing the friction between the shell and the rotary cover, and can effectively prevent the operator from driving the rotary cover to rotate by pressing; in addition, when the shell is lifted up, the bottom wall of the accommodating chamber abuts against the bottom end surface of the rotary cover, and the second gap portion can avoid the bottom ends of the two from fitting completely, thereby reducing the contact area between the bottom wall and the rotary cover, thereby reducing the friction between the shell and the rotary cover, and can effectively prevent the operator from driving the rotary cover to rotate by lifting.

[0021] Preferably, the side diameter of the screw cap is larger than the diameter of the neck, and the first shell and the second shell have an abutment wall. When the first shell and the second shell move relative to the screw cap in any radial direction, the abutment wall will radially abut against the neck or the valve body, so that a gap is maintained between the side wall of the accommodating chamber and the side wall of the screw cap. By adopting the above-mentioned technical solution, the abutment wall acts on the neck or the valve body, which can avoid the side wall of the accommodating chamber from fitting with the screw cap, thereby further reducing the contact area between the accommodating chamber and the screw cap, further reducing the friction between the two, and further reducing the risk of the shell driving the screw cap to rotate. It should be noted that when the abutment member directly abuts against the neck, since the diameter of the neck is smaller than the diameter of the knob, the contact area when the abutment wall abuts against the neck is still smaller than the contact area when the side wall of the accommodating chamber abuts against the screw cap, thereby ensuring that the friction is smaller under this structural condition. And because the diameter of the neck is smaller than the diameter of the knob, the force arm when the neck side wall is stressed is smaller, while the force arm when the knob side is stressed is larger. Therefore, even if the forces acting on the neck and the knob side are equal, the torque generated by the force acting on the knob side is still larger. That is, when the forces are the same in magnitude and direction, the force acting on the side of the rotary cap is more likely to cause the neck to rotate than the force acting on the neck. Therefore, the above structure can further ensure that when the housing rotates, it is difficult to drive the rotary cap and the neck to rotate, so as to achieve the valve body with better performance in preventing misoperation.

[0022] Preferably, a second opening is provided at the center of the top wall of the accommodating cavity, and the diameter of the second opening is smaller than the maximum outer diameter of the screw cap. By adopting the above technical solution, the top wall of the accommodating cavity can abut against the top surface of the screw cap, which can effectively prevent the screw cap from passing through the second opening and being exposed to the outside world, so that the screw cap can be stably maintained in the accommodating cavity, and the operator can be prevented from directly touching the screw cap and causing misoperation of the screw cap.

[0023] Preferably, the projection area of ​​the first opening on the horizontal plane is A1, the projection area of ​​the bottom surface of the screw cap on the horizontal plane is B1, A1:B1>0.5; and / or, the projection area of ​​the second opening on the horizontal plane is A2, the projection area of ​​the top surface of the screw cap on the horizontal plane is B2, A2:B2>0.5. By adopting the above technical solution, the area of ​​the first opening and the area of ​​the second opening are both kept large, and the width of the top wall and the bottom wall of the accommodating cavity in the radial direction is correspondingly reduced, thereby reducing the contact area between the top wall or the bottom wall and the screw cap, effectively preventing the screw cap from rotating with the shell due to excessive friction.

[0024] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 This is a structural schematic diagram of a manual valve locker of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a locker of a manual valve of the utility model in a closed state;

[0028] Figure 3 It is a cross-sectional view of a locker of a manual valve of the utility model;

[0029] Figure 4 This is a structural schematic diagram of a manual valve with a locker in the utility model, in which the locker is in an open state;

[0030] Figure 5 This is a structural schematic diagram of a manual valve with a locker in the utility model, in which the locker is in a closed state;

[0031] Figure 6 This is a cross-sectional view of a manual valve with a locker in which the rotary cover is in the accommodating cavity. Figure 1 ;

[0032] Figure 7 This is a cross-sectional view of a manual valve with a locker in which the rotary cover is in the accommodating cavity. Figure 2 ;

[0033] Figure 8 The utility model is a schematic diagram of a cross-sectional structure of a manual valve with a locker.

[0034] Figure numerals: 1 valve housing, 2 indicator, 3 screw cap, 31 second chamfer, 4 neck, 5 lock, 51 first shell, 511 first extension, 512 through hole, 52 second shell, 521 second extension, 522 protrusion, 523 lock hole, 524 protrusion, 53 abutment wall, 54 connecting portion, 56 accommodating chamber, 561 side wall, 562 top wall, 5621 second opening, 5622 first chamfer, 563 bottom wall, 5631 first opening, 5632 third chamfer, 57 protruding area. DETAILED DESCRIPTION

[0035] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figures 1 to 3 As shown, this embodiment shows a locker 5 of a manual valve, which includes a valve housing 1, a neck 4 located at the top of the valve housing 1, and a rotary cover 3 located on the upper side of the neck 4, wherein the rotary cover 3 can drive the neck 4 to rotate, and the rotation of the neck 4 will change the state of the valve core inside the valve housing 1, thereby changing the working state of the valve body.

[0040] The lock 5 includes a shell and a accommodating chamber 56. The shell includes a first shell 51 and a second shell 52. The shell has a closed state in which the first shell 51 and the second shell 52 are close to each other and form the accommodating chamber 56 between the first shell 51 and the second shell 52, and an open state in which the first shell 51 and the second shell 52 are separated from each other. When the shell is in the closed state, the accommodating chamber 56 includes a side wall 561, a top wall 562 and a bottom wall 563. The accommodating chamber 56 has a first opening 5631 that passes through the bottom wall 563. The lock 5 switches from the open state to the closed state, so that the lock 5 is mounted on the rotary cover 3. At this time, the neck 4 passes through the first opening 5631 and extends into the accommodating chamber 56. At the same time, the rotary cover 3 is maintained on the inner wall of the accommodating chamber 56, and the shell and the rotary cover 3 can rotate relative to each other.

[0041] In the present embodiment, when the shell is in the closed state, the rotary cover 3 is inside the accommodating chamber 56, and the rotary cover 3 is not directly exposed to the outside world, but only acts on the locker 5. Moreover, due to the relative rotation between the locker 5 and the rotary cover 3, the rotary cover 3 will not rotate even if the locker 5 rotates, thereby effectively preventing the rotary cover 3 from being misoperated by the operator, keeping the flow path state of the manual valve stable, and improving the stability of the manual valve. At the same time, the shell can also protect the rotary cover 3, reduce the possibility of damage to the rotary cover 3, and help to increase the service life of the rotary cover 3.

[0042] In addition, the housing is sleeved on the outside of the rotary cover 3 and does not affect the rotary cover 3. Therefore, the locker 5 can lock the rotary cover 3 when the rotary cover 3 is in any position, thereby simplifying the operation difficulty of the locker 5 and improving the locking efficiency.

[0043] like Figure 1 As shown, in this embodiment, a connecting portion 54 is provided between the first shell 51 and the second shell 52, and the first shell 51 and the second shell 52 are rotatably connected by deformation of the connecting portion 54. A first extension portion 511 is provided on a side of the first shell 51 away from the connecting portion 54, and a second extension portion 521 is provided on a side of the second shell 52 away from the connecting portion 54. After the first shell 5151 and the second shell 52 are brought close to each other, the first extension portion 511 and the second extension portion 521 are abutted against each other, and a locking member is provided between the first extension portion 511 and the second extension portion 521. When the locking member is engaged, the lock 5 has an unlocked state and a locked state. When the lock 5 is in the unlocked state, the first shell 51 and the second shell 52 can rotate relative to each other, and the lock 5 is in the locked state. When in the unlocked state, the first extension portion 511 and the second extension portion 521 remain in contact and limit the separation of the first shell 51 and the second shell 52 from each other. The first shell 51 and the second shell 52 are hingedly arranged so that the first shell 51 and the second shell 52 can rotate relatively flexibly, so that the lock 5 can be more conveniently mounted on the outside of the driver, which can reduce the difficulty of installation and disassembly of the lock 5 and improve the work efficiency of the operator; in addition, the locking member can switch the lock 5 between the unlocked state and the locked state, and at the same time, it can also keep the locking member stably in the locked state, preventing the lock 5 from arbitrarily leaving the locked state, improving the locking stability of the lock 5 on the rotary cover 3, and further reducing the possibility of the rotary cover 3 being misoperated.

[0044] In this embodiment, the first shell 51 and the second shell 52 are rotationally connected through the deformation of the connecting part 54, that is, the first shell 51 and the second shell 52 are an integrated structure, which can reduce the overall manufacturing difficulty and cost of the lock 5; it should be noted that, in other embodiments, the first shell 51 and the second shell 52 can be rotationally connected through a rotating shaft or other hinged structures; of course, it can be understood that in other embodiments, both sides of the first shell 51 and the second shell 52 can be provided with locking parts, and both sides of the first shell 51 and the second shell 52 are connected by the locking parts.

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, the lock fastener includes a through hole 512 and a protrusion 522, wherein the through hole 512 is arranged on the first extension portion 511, the protrusion 522 is arranged on the second extension portion 521, and a lock hole 523 for installing a padlock is provided on the protrusion 522. When the first shell 51 and the second shell 52 are brought close to each other and the first extension portion 511 and the second extension portion 521 are kept against each other, the protrusion 522 passes through the through hole 512, and the lock hole 523 passes through the through hole 512 together with the protrusion 522, and the padlock is installed on the lock hole 523, so that the first shell 51 and the second shell 52 are close to each other. The shell 51 and the second shell 52 can be firmly locked in the locked state, which can effectively prevent the locking structure from being arbitrarily separated from the locked state, thereby improving the safety and reliability of the locking structure. At the same time, after the locker 5 is kept in the locked state by the padlock, even if the personnel can easily operate it, the locker 5 cannot be removed from the valve body, and the working state of the valve body cannot be changed; in addition, the cooperation between the perforation 512 and the protrusion 522 makes the unlocking and locking of the lock piece simpler and more convenient, reduces the difficulty of operating the lock piece, and can effectively improve the work efficiency of the operator.

[0046] In order to improve the stability of the locked state of the locking structure, in this embodiment, a positioning protrusion 524 is provided on the outer surface of the protrusion 522, and the positioning protrusion 524 is snap-fitted with the edge of the through hole 512. When the first extension portion 511 and the second extension portion 521 are abutted, the protrusion 522 passes through the through hole 512, and the positioning protrusion 524 passes over the edge of the through hole 512, thereby realizing the snap-fitting of the positioning protrusion 524 with the edge of the through hole 512. The positioning protrusion 524 cooperates with the convex edge to significantly enhance the stability of the lock in the locked state, and effectively prevent the first shell 51 and the second shell 52 from being opened at will; in addition, when the positioning protrusion 524 passes over the edge of the through hole 512, the operator can clearly perceive that the protrusion 522 has completely passed through the through hole 512, making the actual operation more convenient.

[0047] In order to make the separation of the first shell 51 and the second shell 52 easier and more labor-saving, in the present embodiment, when the first shell 51 and the second shell 52 are close to each other and in a locked state, the first extension portion 511 has a protruding area 57 protruding from the second extension portion 521. When the first shell 51 and the second shell 52 need to be separated, the operator can act on the protruding area 57 to separate the first shell 51 and the second shell 52 from each other. The protruding area 57 can provide a force point for the operator, making the unlocking of the first shell 51 and the second shell 52 more convenient and labor-saving, which is conducive to improving the user experience of the operator. It should be noted that in other embodiments, the second extension portion 521 may have a protruding area 57 protruding from the first extension portion 511; or the first extension portion 511 and the second extension portion 521 may both have a protruding area 57, and the protruding area 57 of the first extension portion 511 and the protruding area 57 of the second extension portion 521 are staggered with each other.

[0048] like Figure 3 As shown, in this embodiment, the inner sides of the first shell 51 and the second shell 52 are concave arc surfaces. When the locker 5 is in a closed state, the two sides of the arc surface of the first shell 51 are respectively connected to the two sides of the arc surface of the second shell 52, thereby forming a side wall 561 of the accommodating chamber 56. In this embodiment, the cross section of the side wall 561 of the accommodating chamber 56 is circular, so that when the accommodating chamber 56 rotates around the rotation axis, it will not interfere with the rotary cover 3. Specifically, when the rotary cover 3 is a polygonal structure or has a protrusion or a groove structure on the side, the concave arc surface can ensure that the rotary cover 3 and the inner side wall of the accommodating chamber 56 will not interfere with each other, that is, the locker 5 will not drive the rotary cover 3 to rotate through interference. And when the locker 5 is provided with a concave arc surface, even when the locker 5 cooperates with the valve body of the rotary cover 3 of different shapes, it can effectively ensure that the locker 5 and the rotary cover 3 maintain relative rotation, that is, it can ensure that the product has a wide range of applications.

[0049] Preferably, the inner wall of the accommodating cavity 56 is set to a smooth structure without burrs, so that when the accommodating cavity 56 abuts against the rotary cover 3, the friction between the two cannot drive the rotary cover 3 to rotate.

[0050] like Figures 4 to 7As shown, this embodiment shows a manual valve with a locker 5, including a valve housing 1, a valve core, a driver and a locker 5. A valve cavity is provided in the valve housing 1, and an inlet, an outlet and a flow channel from the inlet to the outlet are formed inside the valve housing 1, the valve cavity is communicated with the flow channel, an opening is provided at the top of the valve housing 1, the valve core is movably provided in the valve cavity, the driver is connected to the valve core, the driver controls the valve core to change its position so as to change the state of the flow channel, the driver includes a neck 4 protruding from the opening to the outside of the valve housing 1 and a rotary cover 3 provided on the neck 4, the operator controls the rotation of the rotary cover 3 through the hole so as to change the position of the valve core, the rotary cover 3 can make the rotation of the driver more convenient and labor-saving, the locker 5 is sleeved on the rotary cover 3, and the locker 5 adopts a locker 5 of a manual valve as mentioned above.

[0051] Reference Figure 8 A second opening 5621 is provided at the top of the accommodating cavity 56. The second opening 5621 can reduce the contact area between the top wall of the accommodating cavity 56 and the rotary cover 3. At the same time, when the rotary cover 3 is provided with a structure such as an indicator 2, the second opening 5621 can also facilitate the indicator 2 to pass through the second opening 5621 to avoid interference between the locker 5 and the indicator 2.

[0052] like Figure 6 As shown, in this embodiment, the diameter of the first opening 5631 on the bottom wall 563 is smaller than the diameter of the bottom end surface of the rotary cover 3. When the locker 5 is lifted along the axial direction of the rotary cover 3, the bottom wall 563 can form a limit with the bottom end surface of the rotary cover 3, and the rotary cover 3 can prevent the shell from moving upward, thereby effectively preventing the shell from separating from the rotary cover 3 along the axial direction of the rotary cover 3, and improving the connection stability between the shell and the rotary cover 3; in addition, the diameter of the second opening 5621 is smaller than the diameter of the top end surface of the rotary cover 3. When the locker 5 is pressed down along the axial direction of the rotary cover 3, the top wall 562 can form a limit with the top end surface of the rotary cover 3, and the rotary cover 3 can prevent the shell from moving downward, thereby effectively preventing the shell from separating from the rotary cover 3 along the axial direction of the rotary cover 3, and improving the connection stability between the shell and the rotary cover 3. That is, through the first opening 5631 and the second opening 5621, after the locker 5 is mounted on the rotary cover 3, the rotary cover 3 can always be kept inside the accommodating cavity 56 regardless of whether the locker 5 moves upward or downward, thereby preventing the side of the rotary cover 3 from protruding from the accommodating cavity 56 and preventing a person from applying a twisting force to the protruding side of the rotary cover 3 to cause the rotary cover 2 to rotate.

[0053] In addition, in the present embodiment, the height of the accommodating chamber 56 is greater than the height of the rotary cover 3. When the locker 5 is in the closed state and the rotary cover 3 is in the accommodating chamber 56, the rotary cover 3 can only maintain contact with the top wall 562 or the bottom wall 563 of the accommodating chamber 56, thereby preventing the rotary cover 3 and the accommodating chamber 56 from abutting against the top wall and the bottom wall at the same time, thereby ensuring that the contact area between the rotary cover 3 and the inner wall of the accommodating chamber 56 is not too large, thereby ensuring that the friction between the shell and the rotary cover 3 is not too large, thereby effectively preventing the rotary cover 3 from being driven to rotate by the shell under the action of the friction force; in addition, reducing the friction between the shell and the rotary cover 3 can also reduce the possibility of damage to the shell and the rotary cover 3 due to friction, which is beneficial to increasing the service life of the shell and the rotary cover 3.

[0054] like Figure 7 As shown, in this embodiment, the minimum inner diameter of the accommodating chamber 56 is greater than the maximum outer diameter of the rotary cover 3. When the locker 5 moves radially to abut against the rotary cover 3, the side wall 561 of the accommodating chamber 56 can only maintain contact with part of the side wall 561 of the rotary cover 3, thereby reducing the contact area between the side wall 561 and the rotary cover 3, reducing the friction between the locker 5 and the rotary cover 3, and effectively preventing the rotary cover 3 from being driven to rotate by the shell under the action of the friction force, further improving the locking ability of the shell on the rotary cover 3, so that the manual valve maintains stable operation.

[0055] like Figure 6 As shown, in this embodiment, a first chamfer 5622 is provided between the side wall 561 and the top wall 562 of the accommodating chamber 56, and a second chamfer 31 is provided between the side wall 561 and the top wall 562 of the rotary cover 3, wherein the first chamfer 5622 and the second chamfer 31 prevent the side walls 561 and the top wall 562 of the two from abutting against each other at the same time. In this case, it can be ensured that the contact area between the accommodating chamber 56 and the rotary cover 3 is not too large, so that when a person drives the locker 5 to rotate, the locker 5 cannot drive the rotary cover 3 to rotate through friction.

[0056] Specifically, if Figure 6As shown, the first chamfer 5622 and the second chamfer 31 are both rounded structures, and the second chamfer 31 is smaller than the first chamfer 5622. When the accommodating chamber 56 and the top wall of the screw cap 3 collide with each other, the accommodating chamber 56 and the side wall of the screw cap 3 cannot collide with each other due to the interference of the first chamfer 5622 and the second chamfer 31; when the accommodating chamber 56 and the side wall of the screw cap 3 collide with each other, the accommodating chamber 56 and the top wall of the screw cap 3 cannot collide with each other due to the interference of the first chamfer 5622 and the second chamfer 31. Similarly, if the first chamfer 5622 and the second chamfer 31 are both chamfered right angles, the second chamfer 31 is smaller than the first chamfer 5622, and the accommodating chamber 56 and the top wall and the side wall of the screw cap 3 will not collide with each other at the same time. It should be noted that the minimum chamfer of the second chamfer 31 can be 0, while the chamfer of the first chamfer 5622 is never 0. It is understandable that in the remaining embodiments, one of the first chamfer 5622 and the second chamfer 31 may be a rounded structure and the other may be a right-angled structure. By adjusting the size of the chamfer, it can be achieved that the accommodating cavity 56 and the top wall and side wall of the screw cap 3 will not abut against each other at the same time.

[0057] The principle is the same as above, and a third chamfer 5632 may be provided between the side wall 561 and the bottom wall 563 of the accommodating chamber 56, and a fourth chamfer may be provided between the side wall 561 and the bottom wall 563 of the rotary cover 3, wherein the third chamfer 5632 and the fourth chamfer make it impossible for the side walls 561 and the bottom wall 563 of the two to abut against each other at the same time, which can effectively reduce the contact area between the shell and the rotary cover 3, thereby reducing the friction between the shell and the rotary cover 3, and effectively preventing the rotary cover 3 from being driven to rotate by the shell under the action of the friction force.

[0058] Of course, it is understandable that in other embodiments, the first chamfer 5622 may be provided only between the side wall 561 and the top wall 562 or the third chamfer 5632 may be provided only between the side wall 561 and the bottom wall 563 in the accommodating cavity 56 .

[0059] In addition, in order to reduce the contact area between the top wall 562 of the accommodating chamber 56 and the top surface of the rotating cover 3, in this embodiment, when the top wall 562 of the accommodating chamber 56 abuts against the top surface of the rotating cover 3, there is a first gap portion separated from each other between the two. For example, when the top of the rotating cover 3 is a plane, the top wall of the accommodating chamber 56 is a curved surface tangent to it, so the non-tangent parts of the two form the first gap portion; or the rotating cover 3 is a curved surface, and the top wall of the accommodating chamber 56 is a plane or cone tangent to it; or, the rotating cover 3 is a curved surface structure convex upward, and the top wall of the accommodating chamber 56 is a curved surface structure concave downward. It should be noted that the top wall structure of the rotating cover 3 and the accommodating chamber 56 includes but is not limited to the aforementioned exemplified structures.

[0060] When the shell is pressed down, the top wall 562 of the accommodating cavity 56 abuts against the top surface of the rotary cover 3. The first gap portion can reduce the contact area between the top wall 562 and the rotary cover 3, thereby reducing the friction between the shell and the rotary cover 3, which can effectively prevent the operator from driving the rotary cover 3 to rotate by pressing.

[0061] Similarly, in order to reduce the contact area between the bottom wall 563 of the accommodating chamber 56 and the bottom end surface of the rotary cover 3, in the present embodiment, when the bottom wall 563 of the accommodating chamber 56 abuts against the bottom end surface of the rotary cover 3, a second gap portion separated from each other is provided therebetween. When the shell is lifted, the bottom wall 563 of the accommodating chamber 56 abuts against the bottom end surface of the rotary cover 3. The second gap portion can reduce the contact area between the bottom wall 563 and the rotary cover 3, thereby reducing the friction between the shell and the rotary cover 3, and effectively preventing the operator from driving the rotary cover 3 to rotate by lifting it.

[0062] like Figure 6 as well as Figure 8 As shown, in this embodiment, the first shell 51 and the second shell 52 have an abutting wall 53. When the lock 5 is in a closed state and the rotary cover 3 is in the accommodating chamber 56, a first opening 5631 is formed between the abutting walls 53, and the abutting wall 53 is on the outer peripheral side of the neck 4. The radius difference between the first opening 5631 and the neck 4 is r, and the radius difference between the accommodating chamber 56 and the rotary cover 3 is R, and R>r. When the lock 5 moves relative to the rotary cover 3 in any radial direction, the abutting wall 53 will abut against the neck 4. At this time, there is still a gap between the side wall 561 of the accommodating chamber 56 and the side wall 561 of the rotary cover 3. The abutting wall 53 preferentially abuts against the neck 4, which can avoid the side wall 561 of the accommodating chamber 56 and the rotary cover 3 from being tightly fitted, so that the rotation of the shell remains smooth, and the rotary cover 3 is prevented from interfering with the rotation of the shell, which helps to reduce the risk of the rotary cover 3 being misoperated.

[0063] In the above structure, although the abutting wall 53 directly abuts against the neck 4, it is difficult for the abutting wall 53 to drive the neck 4 to rotate by friction. This is because the diameter of the neck 4 is smaller than the diameter of the screw cap 3. When the same force acts on the outer wall of the neck 4 and the side wall of the screw cap 3, the force arm at the screw cap 3 is greater than the force arm at the neck 4. Therefore, the torque when the force acts on the screw cap 3 is greater than the torque acting on the neck 4, that is, when the same force acts on the screw cap 3, it will be easier to cause the screw cap 3 to rotate, while it will be difficult to drive the neck 4 to rotate when it acts on the neck 4.

[0064] In this embodiment, the projection area of ​​the first opening 5631 on the horizontal plane is A1, the projection area of ​​the bottom surface of the rotary cover 3 on the horizontal plane is B1, A1:B1>0.5, the projection area of ​​the second opening 5621 on the horizontal plane is A2, the projection area of ​​the top surface of the rotary cover 3 on the horizontal plane is B2, A2:B2>0.5, the area of ​​the first opening 5631 and the area of ​​the second opening 5621 are both kept large, and the width of the top wall 562 and the bottom wall 563 of the accommodating cavity 56 in the radial direction is correspondingly reduced, thereby reducing the contact area between the top wall 562 or the bottom wall 563 and the rotary cover 3, effectively preventing the rotary cover 3 from rotating with the shell due to excessive friction.

[0065] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A manual valve lock, the manual valve comprising a valve housing, a neck at the top of the valve housing, and a rotary cover at the upper side of the neck, characterized in that: The lock includes: The housing comprises a first housing and a second housing, wherein the first housing and the second housing have a closed state and an open state; The accommodating cavity is formed inside the shell when the shell is in a closed state, and its bottom wall, side wall and top wall are formed by the shell; A first opening is provided through the bottom wall of the accommodating cavity to avoid interference between the neck and the bottom wall of the accommodating cavity; In the closed state, the shell can hold the rotary cover inside the accommodating cavity, and the shell and the rotary cover can rotate relative to each other.

2. A manual valve lock according to claim 1, characterized in that: The first shell is hingedly connected to the second shell on one side, and a locking member is provided on the other side to keep the shell in a closed state.

3. The manual valve lock according to claim 2, characterized in that: The inner sides of the first shell and the second shell are concave arc surfaces, and the side walls of the accommodating cavity are formed by the arc surfaces.

4. The manual valve lock according to claim 2, characterized in that: The locking member includes a through hole and a protrusion, wherein the through hole is arranged on the first shell, and the protrusion is arranged on the second shell. A lock hole for installing a padlock is provided on the protrusion. When the shell is in a closed state, the lock hole passes through the through hole together with the protrusion.

5. A manual valve with a lock, characterized in that: It comprises a valve housing, a rotary cover and a locker installed on the rotary cover, wherein the locker is the locker of the manual valve as claimed in any one of claims 1 to 4, and the diameter of the first opening on the bottom wall is smaller than the maximum outer diameter of the rotary cover.

6. A manual valve with a lock according to claim 5, characterized in that: The height of the accommodating cavity is greater than the height of the rotary cover, and the minimum inner diameter of the accommodating cavity is greater than the maximum outer diameter of the rotary cover.

7. A manual valve with a lock according to claim 5, characterized in that: A first chamfer is provided between the side wall and the top wall of the accommodating cavity, and a second chamfer is provided between the side wall and the top wall of the rotating cover, wherein the first chamfer and the second chamfer prevent the side walls and the top wall of the two from abutting against each other at the same time; And / or, a third chamfer is provided between the side wall and the bottom wall of the accommodating cavity, and a fourth chamfer is provided between the side wall and the bottom wall of the rotating cover, wherein the third chamfer and the fourth chamfer prevent the side walls and the bottom walls of the two from abutting against each other at the same time.

8. A manual valve with a lock according to claim 5, characterized in that: When the top wall of the accommodating cavity abuts against the top end surface of the rotating cover, a first gap portion separated from each other is provided between the two; and / or, when the bottom wall of the accommodating cavity abuts against the bottom end surface of the rotating cover, a second gap portion separated from each other is provided between the two.

9. A manual valve with a lock according to claim 8, characterized in that: The side diameter of the screw cap is larger than the neck diameter, and the first shell and the second shell have an abutment wall. When the first shell and the second shell move relative to the screw cap in any radial direction, the abutment wall will radially abut against the neck or the valve body to maintain a gap between the side wall of the accommodating cavity and the side wall of the screw cap.

10. A manual valve with a lock according to claim 5, characterized in that: A second opening is provided at the center of the top wall of the accommodating cavity, and the diameter of the second opening is smaller than the maximum outer diameter of the rotary cover.

11. A manual valve with a lock according to claim 10, characterized in that: The projection area of ​​the first opening on the horizontal plane is A1, the projection area of ​​the bottom surface of the screw cap on the horizontal plane is B1, A1:B1>0.5; and / or, the projection area of ​​the second opening on the horizontal plane is A2, the projection area of ​​the top surface of the screw cap on the horizontal plane is B2, A2:B2>0.5.

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