Manual valve with locking function

Abstract

The utility model discloses a hand-operated valve with a locking function, which belongs to the field of hand-operated valves and comprises a valve body, a valve core, a driving part and a positioning part, a valve cavity is arranged in the valve body, an inflow port, an outflow port and a flow channel from the inflow port to the outflow port are formed in the valve body, the valve core is movably arranged in the valve cavity, a driver is connected with the valve core, and the positioning part is arranged in the valve cavity. The driver comprises a neck part protruding out of the valve body from the open hole and a screw cap arranged on the neck part, the positioner is arranged on the neck part of the driver in a sleeving mode, and the positioner is provided with a first position area and a second position area in the axial direction of the neck part; and the locking structure sleeves the outer side of the driver and is used for limiting the positioner to be separated from the second position area. The manual valve locking device is mainly used for locking the manual valve, and the situation of misoperation of personnel is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of manual valves, in particular to a manual valve with a locking function. 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.

[0003] When necessary, personnel can change the position of the valve core by rotating the cap to change the working state of the valve body; however, when there is no need to change the working state of the valve body, it is easy for personnel to misoperate and cause the rotary cap to rotate, which will cause the working state of the valve body to change, which may cause abnormal working states such as local excessive pressure and excessive pressure in the pipeline system, and cause more serious impact on the pipeline system. Utility Model Content

[0004] The utility model aims to solve the problem that the existing manual valve is easy to change the working state of the valve body under unnecessary circumstances due to misoperation by personnel, and for this purpose provides a manual valve with a locking function, which can lock the rotary cover at any position.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A manual valve with a locking function, comprising:

[0007] A valve body, wherein an inlet, an outlet and a flow passage from the inlet to the outlet are formed inside the valve body, and an opening is provided at the top end of the valve body;

[0008] A valve cavity is formed inside the valve body and is connected to the flow channel;

[0009] A valve core is arranged inside the valve cavity;

[0010] A driver connected to the valve core and used to change the position of the valve core, the driver comprising a neck protruding from the opening to the outside of the valve body and a rotary cover arranged on the neck;

[0011] A positioner is axially movable and arranged on the neck, and has a first position area and a second position area in the axial direction of the neck. When the positioner is located in the first position area, the driver can rotate relative to the valve body; when the positioner is located in the second position area, the positioner is circumferentially engaged with the valve body and the driver;

[0012] The manual valve also includes a locking structure located on the shaft side of the positioner. The locking structure includes a first shell and a second shell. The first shell and the second shell are sleeved on the outside of the driver to limit the positioner from leaving the second position area.

[0013] The beneficial effects of adopting the utility model are:

[0014] The locking structure described in the utility model is sleeved on the outside of the driver, and the positioner is maintained in the second position area so that the positioner is circumferentially engaged with the valve body and the driver. Under the action of the positioner, the driver and the valve body remain relatively fixed, thereby limiting the rotation of the driver. The locking structure is sleeved on the outside of the driver and ensures that the positioner will not leave the second position area, thereby ensuring that the manual valve can be well locked, so that when the state of the valve body does not need to be changed, the positioner, the locking structure and other structures can be used to prevent personnel from accidentally or maliciously operating the valve body, causing the state of the valve body to change. At the same time, the locking structure includes a first shell and a second shell, and the overall structure of the locking structure is relatively simple, which is conducive to reducing the manufacturing cost of the locking structure, and can also reduce the difficulty of installing the locking structure.

[0015] Preferably, one of the outer side of the neck and the inner side of the positioner is provided with a slide groove, and the other is provided with a protrusion; a first mating tooth is provided on the outer side of the positioner, and a second mating tooth is provided on the valve body; in the second position area, the positioner is circumferentially limited by the engagement of the first mating tooth on the outer side with the second mating tooth, and the inner side of the positioner is circumferentially limited with the neck by the engagement of the slide groove and the protrusion; in the first position area, the first mating tooth and the second mating tooth are separated from each other. With the above-mentioned technical solution, the engagement of the slide groove and the protrusion can limit the relative rotation between the driver and the positioner, keep the driver and the positioner rotate synchronously, and improve the assembly stability of the driver and the positioner; in addition, the first mating tooth and the second mating tooth are engaged, so that the positioner and the valve body remain relatively fixed, and the rotation of the driver is limited by the positioner to achieve the locking of the driver.

[0016] Preferably, the positioner is an annular structure sleeved on the outside of the neck, and at least one of the first mating teeth and the second mating teeth is arranged in a circumferential distribution with equal spacing; or, the positioner is a block structure, and the second mating teeth are arranged in a circumferential distribution with equal spacing. With the above technical solution, when the positioner is an annular structure, one of the first mating teeth and the second mating teeth is distributed in a circumferential distribution, thereby ensuring precise engagement with the other, achieving circumferential fixation of the positioner and the valve body, and avoiding the possibility of the first mating teeth and the second mating teeth being unable to mesh; when the positioner is a block structure, the positioner has greater design flexibility, so that the positioner can be designed in different shapes and sizes according to actual needs to adapt to different use environments and space restrictions, and the second mating teeth are evenly spaced circumferentially distributed to ensure that the first mating teeth and the second mating teeth can mesh.

[0017] Preferably, the locator is provided with a clamping piece, and the neck is provided with a first clamping slot and a second clamping slot distributed axially; when the clamping piece is clamped with the first clamping slot, the locator is in the first position area; when the clamping piece is clamped with the second clamping slot, the locator is in the second position area, and the first shell and the second shell are sleeved on the outside of the driver, and the first shell and / or the second shell can limit the clamping piece radially so that the clamping piece cannot be separated from the second clamping slot. With the above technical solution, the clamping piece cooperates with the first clamping slot and the second clamping slot, so that the locator can be stably maintained in the first position area and the second position area, avoiding the locator from arbitrarily separating from the first position area and the second position area, and improving the matching stability between the locator and the driver; and the first shell and / or the second shell radially limits the clamping piece, thereby limiting the clamping piece from being separated from the second clamp. At this point, the radial direction of the locking structure will cooperate with the clamping piece and the second clamping slot to realize that the clamping piece is limited in the second clamping slot; the axial direction of the locking structure will directly limit the axial movement of the locator to realize that the locator is limited in the second position area. Thereby, the locking structure can have a stronger limiting effect on the locator. Even when the locking structure is deformed axially or radially, the locking structure can still limit the locator.

[0018] Preferably, one side of the first shell and the second shell is hinged, and the other side is provided with a locking member, and the locking member enables the locking structure to have an unlocked state and a locked state. With the above technical solution, the first shell and the second shell are hinged, so that the first shell and the second shell can rotate relatively flexibly, so that the locking structure can be more conveniently sleeved on the outside of the driver, which can reduce the difficulty of installation and removal of the locking structure and improve the work efficiency of the operator; in addition, the locking member can switch the locking structure 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, avoiding the locking structure from arbitrarily leaving the locked state, improving the locking stability of the locking structure on the rotary cover, and further reducing the possibility of the rotary cover being misoperated.

[0019] Preferably, the first position region is located on the side of the second position region close to the rotary cover, and the first shell and / or the second shell has a reduced diameter portion, which has two ends that can respectively abut against the end face of the rotary cover and the end face of the locator. With the above technical solution, when the locator moves in a direction away from the rotary cover, that is, the locator moves toward the second position region, and the reduced diameter portion abuts against the rotary cover and the locator to limit the direction in which the locator is separated from the rotary cover. In other embodiments, the first position region may be located on the side of the second position region away from the rotary cover.

[0020] Preferably, the locking member includes a perforation and a protrusion, one of the perforation and the protrusion is arranged on the first shell, and the other is arranged on the second shell, the protrusion is provided with a lock hole for installing a padlock, and the first shell and the second shell are in a closed state, and the lock hole passes through the perforation together with the protrusion. With the above-mentioned technical solution, 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 locking structure from being arbitrarily separated from the locked state, improve the safety and reliability of the locking structure, and prevent the occurrence of misoperation by personnel; in addition, the cooperation of the perforation and the protrusion makes the unlocking and locking of the locking member simpler and more convenient, reduces the difficulty of operating the locking member, and can effectively improve the work efficiency of the operator.

[0021] Preferably, the outer surface of the protrusion is provided with a positioning protrusion, and the positioning protrusion is engaged with the edge of the perforation. With the above technical solution, the positioning protrusion is engaged with the edge of the perforation, which can significantly enhance the stability of the lock in the locked state, and after the positioning protrusion is engaged with the edge of the perforation, it is ensured that the first shell and the second shell remain in the locked state, effectively preventing the first shell and the second shell from being opened at will; in addition, when the positioning protrusion passes over the edge of the perforation, the operator can clearly perceive that the protrusion has completely passed through the perforation, further reducing the difficulty of operating the lock.

[0022] Preferably, when the locking structure is in the locked state, the side of the first shell and the second shell away from the hinge has an area protruding from the side of the second shell, and / or the side of the second shell has an area protruding from the side of the first shell. Through this arrangement, it can be ensured that when the first shell and the second shell are separated, through the above-mentioned protruding area, it can be ensured that a person can apply a force to the protruding part to overcome the force of the above-mentioned positioning protrusion and the perforated edge, so that the first shell and the second shell can be separated conveniently.

[0023] Preferably, the inner sides of the first shell and the second shell are provided with a guide part, the guide part is provided with a guide surface, the height of the guide part is H3, when the locator is in the first position area, the maximum distance between the locator and the rotary cover is H4, wherein H3>H4. With the above technical solution, when the locking structure needs to lock the rotary cover, the first shell and the second shell are mounted on the outside of the driver, and the guide part can guide the locator to move toward the second position area, which can save the process of manually controlling the movement of the locator, and is conducive to improving the installation efficiency of the locking structure; in addition, H3>H4 can ensure that after the locking structure is mounted, the locator can be separated from the first position area, thereby maintaining the locking of the rotary cover.

[0024] Preferably, the locking structure further includes a receiving cavity, and when in the second position area, the locking structure is used to lock the positioner, and the locking structure can receive the rotary cover inside the receiving cavity. With the above technical solution, the locking structure wraps the rotary cover in the receiving cavity to prevent the rotary cover from being directly exposed to the outside world, which can effectively prevent the rotary cover from being forced to rotate, further reducing the possibility of the rotary cover being misoperated. At the same time, the locking structure 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.

[0025] 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

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a structural schematic diagram of the rotary cover in the first embodiment of the utility model in the unlocked state;

[0028] Figure 2 This is a structural schematic diagram of the rotary cover in the first embodiment of the utility model in a locked state;

[0029] Figure 3 This is an exploded view of the valve body, the rotary cover and the driver in the first embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the locator in the first position area in the first embodiment of the utility model;

[0031] Figure 5 This is a structural schematic diagram of the locking structure in the first embodiment of the utility model in the unlocked state;

[0032] Figure 6 This is a structural schematic diagram of the locking structure in the first embodiment of the utility model in a locked state;

[0033] Figure 7This is a schematic cross-sectional view of the structure of the first embodiment of the present utility model;

[0034] Figure 8 This is a structural schematic diagram of the locking structure in the second embodiment of the present utility model in the unlocking adjustment;

[0035] Fig. 9 This is a structural schematic diagram of the locking structure in Embodiment 3 of the present utility model;

[0036] Fig.10 This is a structural schematic diagram of the locking structure in Embodiment 3 of the present utility model;

[0037] Fig.11 It is a structural schematic diagram of the locking structure in the fourth embodiment of the present utility model.

[0038] Figure numerals: 1 valve body, 11 opening, 12 second matching tooth, 2 driver, 21 slide groove, 22 first card slot, 23 second card slot, 24 neck, 3 screw cap, 4 positioner, 41 protrusion, 42 engaging piece, 43 first matching tooth, 5 locking structure, 51 first shell, 511 first extension part, 512 through hole, 52 second shell, 521 second extension part, 522 protrusion, 523 locking hole, 524 protrusion, 53 reduced diameter part, 54 connecting part, 55 guide part, 56 accommodating cavity, 57 protruding area. DETAILED DESCRIPTION

[0039] The technical scheme of the embodiment of the utility model is explained and described below in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the utility model. In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0040] 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.

[0041] 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.

[0042] Embodiment 1:

[0043] like Figures 1 to 7 As shown, this embodiment shows a manual valve with a locking function, including a valve body 1, a valve core, a driving part and a positioning part. A valve cavity is provided in the valve body 1, and an inlet, an outlet and a flow channel from the inlet to the outlet are formed inside the valve body 1. The valve cavity is connected with the flow channel, the valve core is movably arranged in the valve cavity, and the driver 2 is connected with the valve core. The driver 2 controls the valve core to change its position so as to change the state of the flow channel.

[0044] An opening 11 is provided at the top of the valve body 1. The driver 2 includes a neck 24 protruding from the opening 11 to the outside of the valve body 1 and a rotary cover 3 provided on the neck 24. The operator drives the neck 24 to rotate by controlling the rotary cover 3 to change the position of the valve core. The rotary cover 3 can make the rotation of the driver 2 more convenient and labor-saving. The positioner 4 is sleeved on the neck 24 of the driver 2. The positioner 4 and the neck 24 can slide axially along the neck 24. The positioner 4 has a first position area and a second position area in the axial direction of the neck 24. The positioner 4 moves along the axial direction of the neck 24 to achieve switching between the first position area and the second position area. When the positioner 4 is in the first position area, the driver 2 can rotate circumferentially relative to the valve body 1. When the positioner 4 is in the second position area, the valve body 1 is circumferentially engaged with the positioner 4, and the positioner 4 is circumferentially positioned with the neck 24, so that the driver 2 and the valve body 1 remain relatively fixed, thereby limiting the rotation of the driver 2.

[0045] like Figure 3 and Figure 4As shown, in this embodiment, the outer side of the neck 24 is provided with an axially distributed slide groove 21, and the inner side of the locator 4 is provided with a protrusion 41. The slide groove 21 and the protrusion 41 slide together to realize the circumferential limit of the locator 4 and the neck 24, so that the locator 4 and the neck 24 keep rotating synchronously. The slide groove 21 and the protrusion 41 cooperate to limit the relative rotation between the neck 24 and the locator 4, keep the neck 24 and the locator 4 rotate synchronously, and improve the assembly stability of the driver 2 and the locator 4; in addition, the outer side of the locator 4 is provided with a first The inner wall of the opening 11 is provided with a mating tooth 43 and a second mating tooth 12. When the positioner 4 is in the first position area, the positioner 4 is disengaged from the opening 11 to separate the first mating tooth 43 and the second mating tooth 12 from each other, and the driver 2 and the valve body 1 can rotate relative to each other; when the positioner 4 is in the second position area, the positioner 4 partially extends into the opening 11, and the first mating tooth 43 and the second mating tooth 12 remain engaged, so that the positioner 4 and the valve body 1 remain relatively fixed, thereby realizing the locking of the driver 2.

[0046] In this embodiment, the positioner 4 is an annular structure sleeved on the outside of the neck 24, the first matching teeth 43 are arranged in a circumferential distribution with equal spacing, and a plurality of second matching teeth 12 are arranged at intervals on the inner side of the opening 11. The first matching teeth 43 are arranged in a circumferential distribution, which can ensure precise engagement with the other, realize the circumferential fixation of the positioner 4 and the valve body 1, and avoid the possibility that the first matching teeth 43 and the second matching teeth 12 cannot be engaged; of course, it can be understood that in other embodiments, the second matching teeth 12 can also be arranged in a circumferential distribution, or the second matching teeth 12 can be arranged in a circumferential distribution, and the corresponding first matching teeth 43 can also be arranged in intervals. It should be noted that in other embodiments, the positioner 4 can also be a block structure, and the second matching teeth 12 are arranged in a circumferential distribution with equal spacing. When the positioner 4 is a block structure, the positioner 4 has greater design flexibility, so that the positioner 4 can be designed with different shapes and sizes according to actual needs to adapt to different use environments and space restrictions. The second matching teeth 12 are arranged in a circumferential distribution with equal spacing to ensure that the first matching teeth 43 and the second matching teeth 12 can be engaged.

[0047] like Figure 1 and Figure 2 As shown, the manual valve in this embodiment also includes a locking structure 5, which includes a first shell 51 and a second shell 52. The first shell 51 and the second shell 52 are sleeved on the outside of the driver 2 and are used to limit the positioner 4 from leaving the second position area, so that the positioner 4 is always in a circumferential engagement state with the valve body 1 and the driver 2. Under the action of the positioner 4, the driver 2 and the valve body 1 remain relatively fixed, thereby limiting the rotation of the driver 2, thereby avoiding personnel from misoperating the rotary cover 3 and maintaining the stable operation of the manual valve.

[0048] The locking structure 5 includes a first shell 51 and a second shell 52 . The overall structure of the locking structure 5 is relatively simple, which is beneficial to reducing the manufacturing cost of the locking structure 5 and also can reduce the difficulty of installing the locking structure 5 .

[0049] like Figure 3 , Figure 4 as well as Figure 7 As shown, the positioner 4 shown in this embodiment is provided with a snap-fitting member 42, which is located on the side of the positioner 4 close to the neck 24, and the snap-fitting member 42 extends axially upward along the neck 24 and is higher than the top surface of the positioner 4, and the neck 24 is provided with an axially distributed first slot 22 and a second slot 23, and the first slot 22 is closer to the rotary cover 3 than the second slot 23, and when the snap-fitting member 42 is engaged with the first slot 22, the positioner 4 is in the first position area; when the snap-fitting member 42 is engaged with the second slot 23, the positioner 4 is in the second position area. Through the cooperation between the first slot 22, the second slot 23 and the positioner 4, it is more convenient to judge whether the positioner 4 is located in the first position area or the second position area in actual operation.

[0050] The side walls of the first clamping slot 22 and the second clamping slot 23 that are close to each other are first guide surfaces such as inclined surfaces and arc surfaces, which facilitate the axial movement of the engaging member 42 along the first guide surface and switch between the first clamping slot 22 and the second clamping slot 23. Furthermore, both ends of the axial part of the engaging member 42 located inside the first clamping slot 22 or the second clamping slot 23 are also provided with second guide surfaces such as inclined surfaces and arc surfaces, which further ensures that the engaging member 42 can move axially.

[0051] At the same time, the circumferential side walls of the first slot 22 and the second slot 23 are both set to straight-edge structures, and the circumferential side walls of the engaging member 42 are also straight-edge structures, so as to ensure that when the engaging member 42 is inside the first slot 22 / the second slot 23, it is impossible to circumferentially rotate the engaging member 42 so that the engaging member 42 circumferentially disengages from the first slot 22 / the second slot 23. Therefore, under this structure, the effect of circumferential limiting between the locator 4 and the neck 24 can be further ensured. In other embodiments, the aforementioned slide groove 21 and the protrusion 41 structure may not be set, and the circumferential limiting between the locator 4 and the neck 24 in the second position area can be achieved only by the circumferential limiting between the engaging member 42 and the second slot 23.

[0052] During the switching process between the first slot 22 and the second slot 23 , the engaging member 42 is radially deformed by the first guide surface or the second guide surface until it is re-engaged with the second slot 23 or the first slot 22 , at which time it recovers its deformation.

[0053] Therefore, when the locking structure 5 is sleeved on the outside of the driver 2, the engaging member 42 is located inside the first shell 51 and the second shell 52, and the first shell 51 and / or the second shell 52 will radially limit the engaging member 42 so that the engaging member 42 cannot be separated from the second slot 23, thereby further ensuring that the locator 4 is maintained in the second position area. Thus, the locking structure 5 can axially limit the axial movement of the locator 4, and the locking structure 5 can radially limit the engaging member 42 from being separated from the second slot 23, thereby ensuring that even if the locking structure 5 is greatly deformed axially or radially, it can still effectively ensure that the locator 4 will not be separated from the second position area, thereby effectively avoiding misoperation by post staff or non-post staff, and in this case, after the locking structure 5 is sleeved on the outside of the driver 2, even if a person maliciously wants to operate it, it is difficult to cause the locking structure 5 to be severely deformed axially and radially at the same time and fail to limit the locator 4.

[0054] like Figure 5 and Figure 6 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 rotationally connected through the deformation of the connecting portion 54. A first extending portion 511 is provided on the side of the first shell 51 away from the connecting portion 54, and a second extending portion 521 is provided on the side of the second shell 52 away from the connecting portion 54. After the first shell 51 and the second shell 52 are brought close to each other, the first extending portion 511 and the second extending portion 521 are abutted against each other, and a locking member is provided between the first extending portion 511 and the second extending portion 521. The locking member enables the locking structure 5 to have an unlocked state and a locked state. When the locking structure 5 is in the unlocked state, the first shell 51 and the second shell 52 can rotate relative to each other. When the locking structure 5 is in the locked state, the first extending portion 511 and the second extending portion 521 remain in a state of abutting or approaching each other, and limit the first shell 51 and the second shell 52 from separating from each other.

[0055] 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 locking structure 5 can be more conveniently mounted on the outside of the driver 2, which can reduce the difficulty of installation and disassembly of the locking structure 5 and improve the work efficiency of the operator; in addition, the locking member can switch the locking structure 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 locking structure 5 from arbitrarily leaving the locked state, improving the locking stability of the locking structure 5 on the rotary cover 3, and further reducing the possibility of the rotary cover 3 being misoperated.

[0056] Furthermore, in this embodiment, the first shell 51 and the second shell 52 are rotationally connected through the deformation of the connecting portion 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 locking structure 5. For example, the first shell 51 and the second shell 52 are integrally connected, so there is no need to additionally assemble the first shell 51 and the second shell 52; of course, in other embodiments, the first shell 51 and the second shell 52 can be rotationally connected through a rotating shaft or other hinged structures.

[0057] like Figure 6 as well as Figure 7 As shown, in this embodiment, the first position area is located on the side of the second position area close to the rotary cover, that is, when the positioner 4 moves in the direction away from the rotary cover 3, it will move to the second position area. The first shell 51 and the second shell 52 include a necking portion 53, and the necking portion 53 abuts against the rotary cover 3 and the positioner 4 to limit the direction of the positioner 4 from being separated from the rotary cover 3. When the positioner 4 moves from the first position area to the second position area, the upper end of the necking portion 53 abuts against the lower end surface of the rotary cover 3, and the lower end of the necking portion 53 abuts against the upper end surface of the positioner 4, so that the necking portion 53 will be restricted between the positioner 4 and the rotary cover 3, thereby limiting the positioner 4 from being separated from the second position area. Of course, in other embodiments, the first position area may also be located on the side of the second position area away from the rotary cover, and at this time, the necking portion is arranged between the positioner and the valve body to indicate that the positioner moves in the direction away from the rotary cover.

[0058] Further, when the first extension portion 511 and the second extension portion 521 are against each other, a receiving chamber 56 is formed between the first shell 51 and the second shell 52, and the reduced diameter portion 53 is arranged at the lower side of the receiving chamber 56, and the inner diameter of the reduced diameter portion 53 is smaller than the inner diameter of the receiving chamber 56. When the locking structure 5 is sleeved on the driver 2, the rotary cover 3 is in the receiving chamber 56, so as to improve the overall visual effect, to remind the personnel that the valve body has been locked, to avoid the personnel from operating, especially the first shell 51 and the second shell 52 can be set to a different color from the valve body, so as to further play a prompting role and avoid the possibility of misoperation by the personnel. At the same time, the locking structure 5 can also be relatively rotatable with the rotary cover 3 and the neck 24, so that even if the personnel still make misoperation or malicious operation at this time, only the locking structure 5 will be driven to rotate, and the rotary cover 3 and the neck 24 will not be driven to rotate, so as to avoid the rotary cover 3 and the neck 24 from being subjected to excessive torsional force, resulting in the structure being easily damaged.

[0059] like Figure 5 and Figure 6As shown, in this embodiment, the lock member includes a through hole 512 and a protrusion 522, wherein the through hole 512 is arranged on the first extension 511, the protrusion 522 is arranged on the second extension 521, and a lock hole 523 for installing a padlock is arranged on the protrusion 522. When the first shell 51 and the second shell 52 are close to each other and the first extension 511 and the second extension 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 can be firmly locked in the locked state, which can effectively prevent the locking structure 5 from being arbitrarily out of the locked state, improve the safety and reliability of the locking structure 5, so that even if a person maliciously wants to operate the valve body, the working state of the valve body cannot be changed. In addition, the cooperation between the through hole 512 and the protrusion 522 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. It is understandable that in other embodiments, openings may be directly provided on the first extension portion 511 and the second extension portion 521, and the padlock passes through the two openings at the same time to achieve a locked state between the first extension portion 511 and the second extension portion 521; or staggered protrusions 522 may be provided on the first extension portion 511 and the second extension portion 521, and the padlock passes through the lock holes in the two protrusions 522 to achieve a locked state between the first shell 51 and the second shell 52.

[0060] In order to improve the stability of the locking state of the locking structure 5, a positioning protrusion 524 is provided on the outer surface of the protrusion 522 in this embodiment, 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 cooperation between the positioning protrusion 524 and the through hole 512 can realize the preliminary limiting of the first shell 51 and the second shell 52, that is, when the first shell 51 and the second shell 52 are in the locked state, if there is no human operation, they will be kept in the locked state, thereby facilitating subsequent operations. For example, if a person needs to lock the first shell 51 and the second shell 52 by a padlock, after the first shell 51 and the second shell 52 are placed on the outside of the driver 2, even if the person does not contact the locking structure 5, it can ensure that the first shell 51 and the second shell 52 will not separate, thereby achieving more convenient operation, which can be easily performed by a single person or even with one hand.

[0061] In addition, when the positioning protrusion 524 passes over the edge of the through-hole 512, the operator can clearly feel that the protrusion 522 has completely passed through the through-hole 512, thereby improving the user experience.

[0062] like Figure 5 As shown, in order to make the separation of the first shell 51 and the second shell 52 easier and more labor-saving, in this 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 application 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 operator's usability Experience, especially when the aforementioned positioning protrusion 514 is provided, the protruding area 57 can make it easier for personnel to apply force to the first shell 51 and the second shell 52, so as to overcome the clamping force between the positioning protrusion 514 and the through hole 512; 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.

[0063] Embodiment 2:

[0064] like Figure 4 and Figure 8 As shown, the main difference between this embodiment and the first embodiment is that in this embodiment, a guide portion 55 is provided on the inner side of the reduced diameter portion 53, and guide surfaces are provided on the upper and lower sides of the guide portion 55. The height of the guide portion 55 is H3. When the locator 4 is in the first position area, the maximum distance between the locator 4 and the rotary cover 3 is H4, wherein H3>H4.

[0065] When the locking structure 5 needs to lock the rotary cover 3, if the locator 4 is in the first position area, the first shell 51 and the second shell 52 can be directly mounted on the outside of the driver 2, wherein the guide portion 55 will be inserted between the locator 4 and the rotary cover 3, and the guide surface will be used to squeeze the locator 4 downward, thereby maintaining the locking of the rotary cover 3, that is, moving the locator 4 toward the second position area, until the guide portion 55 and the reduced diameter portions 53 in the first shell 51 and the second shell 52 are all located between the locator 4 and the rotary cover 3. Since H3>H4, it can be ensured that after the locking structure 5 is completed, the locator 4 can be separated from the first position area. At this time, the locator 4 is already in the second position area, and the reduced diameter portion 53 will prevent the locator 4 from being separated from the second position area.

[0066] Therefore, by providing a guide portion 55, it is possible to guide the locator 4 to move toward the second position area, without the need for personnel to manually move the locator 4 from the first position area to the second position area, which is beneficial to improving the installation efficiency of the locking structure 5; it should be noted that, in this embodiment, the outer surface of the guide portion 55 is a smooth curved surface, and the smooth curved surface acts as a guide surface for guiding the movement of the locator 4; of course, it can be understood that in other embodiments, the upper and lower ends of the guide portion 55 can also be provided with inclined surfaces as guide surfaces.

[0067] The other structures of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0068] Embodiment three:

[0069] like Fig. 9 As shown, the main difference between this embodiment and the first embodiment is that, in this embodiment, when the locking structure 5 is sleeved on the outside of the driver 2, the first shell 51 and the second shell 52 are entirely located between the rotary cover 3 and the positioner 4, and the first extension 511 and the second extension 521 are both provided with a lock hole 523. When the first extension 511 and the second extension 521 are against each other, the two lock holes 523 are aligned with each other, and the padlock passes through the two lock holes 523 to lock the locking structure 5. This structure can ensure that the device structure is simpler, the processing is more convenient, and the processing cost is lower.

[0070] like Fig.10 As shown, in this embodiment, the guide portion 55 is located on the inner side of the first shell 51 and the second shell 52, and guide surfaces are provided on the upper and lower sides of the guide portion 55. The height of the guide portion 55 is H3. When the locator 4 is in the first position area, the maximum distance between the locator 4 and the rotary cover 3 is H4, wherein H3>H4. When the locking structure 5 needs to lock the rotary cover 3, the first shell 51 and the second shell 52 are mounted on the outside of the driver 2, and the guide portion 55 can guide the locator 4 to move toward the second position area, thereby eliminating the process of manually controlling the movement of the locator 4, which is beneficial to improving the installation efficiency of the locking structure 5. In addition, H3>H4 can ensure that after the locking structure 5 is completely mounted, the locator 4 can be separated from the first position area, thereby maintaining the locking of the rotary cover 3.

[0071] The other structures of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0072] Embodiment 4:

[0073] like Fig.11As shown, the main difference between this embodiment and the third embodiment is that in this embodiment, the first shell 51 and the second shell 52 are split, and first extension portions 511 are provided on both sides of the first shell 51, and second extension portions 521 are provided on both sides of the second shell 52. The first extension portion 511 and the second extension portion 521 are both provided with through holes 512. When the locking structure 5 is sleeved on the driver 2, the first extension portion 511 and the second extension portion 521 are abutted against each other, and the two through holes 512 are kept aligned, and the padlock passes through the two lock holes 523 to put the locking structure 5 in a locked state.

[0074] The other structures of this embodiment are the same as those of the third embodiment, and will not be described in detail here.

[0075] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A manual valve with a locking function, characterized in that: include: A valve body, wherein an inlet, an outlet and a flow passage from the inlet to the outlet are formed inside the valve body, and an opening is provided at the top end of the valve body; A valve cavity is formed inside the valve body and is connected to the flow channel; A valve core is arranged inside the valve cavity; A driver connected to the valve core and used to change the position of the valve core, the driver comprising a neck protruding from the opening to the outside of the valve body and a rotary cover arranged on the neck; A positioner is axially movable and arranged on the neck, and has a first position area and a second position area in the axial direction of the neck. When the positioner is located in the first position area, the driver can rotate relative to the valve body; when the positioner is located in the second position area, the positioner is circumferentially engaged with the valve body and the driver; The manual valve also includes a locking structure located on the shaft side of the positioner. The locking structure includes a first shell and a second shell. The first shell and the second shell are sleeved on the outside of the driver to limit the positioner from leaving the second position area.

2. The manual valve with locking function according to claim 1, characterized in that: One of the outer side of the neck and the inner side of the positioner is provided with a sliding groove, and the other is provided with a protrusion; the outer side of the positioner is provided with a first matching tooth, and the valve body is provided with a second matching tooth; When in the second position area, the locator is circumferentially limited by the engagement of the first outer matching tooth and the second matching tooth, and the inner side of the locator is relatively limited in the circumferential direction with the neck by the cooperation of the sliding groove and the protrusion; In the first position area, the first matching teeth and the second matching teeth are separated from each other.

3. The manual valve with locking function according to claim 2, characterized in that: The positioner is an annular structure sleeved on the outside of the neck, and at least one of the first mating teeth and the second mating teeth is arranged in a circumferential distribution with equal spacing; or, the positioner is a block structure, and the second mating teeth is arranged in a circumferential distribution with equal spacing.

4. The manual valve with locking function according to claim 1, characterized in that: The positioner is provided with a clamping piece, and the neck is provided with a first clamping groove and a second clamping groove distributed axially; When the engaging member is engaged with the first engaging slot, the locator is in the first position area; When the engaging member is engaged with the second slot, the locator is in the second position area, and the first shell and the second shell are sleeved on the outside of the driver. The first shell and / or the second shell can radially limit the engaging member so that the engaging member cannot escape from the second slot.

5. The manual valve with locking function according to claim 1, characterized in that: One side of the first shell and the second shell is hinged, and the other side is provided with a locking member, and the locking member enables the locking structure to have an unlocked state and a locked state.

6. The manual valve with locking function according to claim 5, characterized in that: The first position area is located on a side of the second position area close to the rotary cover. The first shell and / or the second shell has a reduced diameter portion having two ends that can respectively abut against the end surface of the rotary cover and the end surface of the positioner.

7. The manual valve with locking function according to claim 5, characterized in that: The locking component includes a through hole and a protrusion, one of the through hole and the protrusion is arranged on the first shell, and the other is arranged on the second shell. The protrusion is provided with a lock hole for installing a padlock. When the first shell and the second shell are in a closed state, the lock hole passes through the through hole together with the protrusion.

8. The manual valve with locking function according to claim 7, characterized in that: The outer surface of the protruding portion is provided with a positioning protrusion, and the positioning protrusion is engaged with the edge of the perforation; When the locking structure is in the locked state, the first shell side has an area protruding from the second shell side, and / or the second shell side has an area protruding from the first shell side, on the side of the first shell and the second shell away from the hinge.

9. The manual valve with locking function according to claim 1, characterized in that: A guide portion is provided on the inner side of the first shell and the second shell. The guide portion is provided with a guide surface. The height of the guide portion is H3. When the positioner is in the first position area, the maximum distance between the positioner and the rotary cover is H4, wherein H3>H4.

10. A manual valve with a locking function according to any one of claims 1 to 9, characterized in that: The locking structure also includes a receiving cavity. When the locking structure is in the second position area and is used to lock the positioner, the locking structure can receive the rotary cover in the receiving cavity.

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