Plug valve

Abstract

The utility model provides a plug valve, which belongs to the technical field of gas stoves, and comprises a valve body, a valve core, a gear device and a limiting structure, and the valve body is provided with a valve body cavity; the valve core is arranged in the valve body cavity; the gear device is connected to the valve element, can rotate along with the valve element and is used for achieving gear switching. The limiting structure comprises a first limiting assembly and a second limiting assembly which are used for limiting the installation position of the gear device, the first limiting assembly is connected to the valve element, the second limiting assembly is connected with the valve body, and the gear device and the valve element are prevented from being disengaged from the valve body cavity through cooperation of the first limiting assembly and the second limiting assembly. According to the plug valve, double limiting is arranged on the valve element and the valve body, the gear device and the gear ball are prevented from running out, the valve element is also prevented from running out in the transportation process or in the reverse falling process, the problem that the plug valve fails is solved, and the stability of the plug valve is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas stove technical field, especially a cock valve. BACKGROUND

[0002] In the household gas stove, the cock valve is usually used for controlling the opening and closing of the stove, the on-off of the gas, the adjustment of the fire size and the like. The valve core is an important component of the cock valve, and the control of the gas flow can be realized through the valve core, so as to achieve the purpose of adjusting the fire. However, in the prior art, the valve core is prone to running out during transportation or drop test, resulting in the failure of the overall valve body. SUMMARY

[0003] The first technical problem to be solved by the utility model is to provide a limiting structure with double limiting for preventing the gear and the gear ball from running out and preventing the valve core from running out and causing the failure of the cock valve during transportation or reverse drop.

[0004] The technical scheme adopted by the utility model to solve the above first technical problem is as follows: a cock valve, the cock valve comprises:

[0005] A valve body has a valve body cavity;

[0006] A valve core is arranged in the valve body cavity;

[0007] A gear is connected to the valve core and can rotate with the valve core to realize the switching of the gear;

[0008] A limiting structure includes a first limiting component and a second limiting component for limiting the installation position of the gear, the first limiting component is connected to the valve core, the second limiting component is connected to the valve body, and the first limiting component and the second limiting component are matched to prevent the gear and the valve core from being pulled out of the valve body cavity.

[0009] According to an embodiment of the utility model, the first limiting component includes a limiting piece, the limiting piece is connected between the valve core and the gear to limit the installation position of the gear in the valve core.

[0010] According to an embodiment of the utility model, the limiting piece includes a snap spring, the outer periphery of the valve core is provided with a snap spring groove for installing the snap spring, the snap spring is inserted into the snap spring groove and abuts against the top surface of the gear, preventing the gear from moving along the axial direction of the valve core.

[0011] According to an embodiment of the utility model, wherein, the second limiting component is located above the first limiting component, the second limiting component includes the limiting ring connected to the valve body top, the axial projection of limiting ring and the axial projection of gear positioner overlap, to prevent gear positioner from the valve body cavity drops out.

[0012] According to an embodiment of the utility model, wherein, the second limiting component still include the multiple mounting blocks set up in the valve body top, the inside of each mounting block all is seted up with U groove, the slot of each U groove respectively towards the valve body cavity, multiple U groove is in common to the limiting ring limit.

[0013] According to an embodiment of the utility model, wherein, the groove bottom of each U groove is arc, the extension line of multiple U groove groove bottom forms the ring for the limiting ring limit.

[0014] According to an embodiment of the utility model, wherein, the limiting ring is seted up with the notch, to facilitate its insertion multiple U groove.

[0015] According to an embodiment of the utility model, wherein, the valve body still is connected with:

[0016] Mounting column, is connected in the top of valve body, along axial opening has installation hole;

[0017] Reset spring, one end insertion and fixedly connected in installation hole, the other end extends to the direction of gear positioner;

[0018] Gear bead, is fixedly connected in the other end of reset spring, wherein, the gear positioner is seted up with multiple gear slots, the gear bead can insert or separate each gear slot, to realize the switching of different gears.

[0019] According to an embodiment of the utility model, wherein, the mounting column is close to the one end of valve body cavity and is equipped with the limiting slot for the limiting ring limit, the limiting slot is located above installation hole.

[0020] According to an embodiment of the utility model, wherein, the plug valve still includes:

[0021] Valve cover, the valve cover is connected in valve body;

[0022] Valve stem, passes through the valve cover and is connected in the top of valve core, to drive valve core bidirectional rotation.

[0023] Compared with prior art, the utility model has following advantages or beneficial effects:

[0024] The utility model discloses a double limit is arranged at the valve core and the valve body, prevents the gear ware and gear ball run out, also prevents the valve core run out when the transportation process or reverse drop, leads to the problem of stopcock failure, effectively improves the stability of stopcock. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other features and advantages of the present utility model will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0026] Figure 1 It is the sectional view of stopcock according to an example embodiment.

[0027] Figure 2 It is the connection schematic drawing of valve body, valve core and limit structure according to an example embodiment.

[0028] Figure 3 It is the schematic drawing of valve body according to an example embodiment.

[0029] Figure 4 It is the connection schematic drawing of limit ring according to an example embodiment.

[0030] Figure 5 It is the schematic drawing of gear ware according to an example embodiment.

[0031] Figure 6 It is the sectional view of gear ware according to an example embodiment.

[0032] Figure 7 It is the perspective view of gear ware according to an example embodiment.

[0033] Figure 8 It is the connection schematic drawing of valve cover and valve rod according to an example embodiment.

[0034] Figure 9 It is the perspective view of valve cover according to an example embodiment. BRIEF DESCRIPTION OF DRAWINGS:

[0036] 1, valve body;10, valve body cavity;11, mounting column;111, mounting hole;

[0037] 2, valve core;21, snap spring slot;

[0038] 3, gear ware;30, gear slot;31, first gear disc;311, first gear tooth;3111, first inclined surface;32, second gear disc;321, second gear tooth;3121, second inclined surface;33, oil storage groove;

[0039] 4. Limiting structure; 41. First limiting component; 411. Snap ring; 42. Second limiting component; 421. Limiting ring; 4211. Notch; 422. Mounting block; 4221. U-shaped groove;

[0040] 5. Valve cover; 50. Valve cover body; 51. Guide structure; 511. First guide block; 5111. First guide surface; 512. Second guide block; 5121. Second guide surface; 513. Guide plate; 52. First limiting block; 520. Gap; 53. Second limiting block;

[0041] 6. Valve stem. Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0043] The terms “a,” “one,” “the,” and “” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0044] This utility model embodiment provides a plug valve, such as Figures 1-9 As shown, the plug valve includes a valve body 1, a valve core 2, a positioner 3, and a limiting structure 4. The valve body 1 has a valve body cavity 10, the valve core 2 is disposed in the valve body cavity 10, and the positioner 3 is connected to the valve core 2. The positioner 3 can rotate with the valve core 2 to achieve position switching. The limiting structure 4 includes a first limiting component 41 and a second limiting component 42 for limiting the installation position of the positioner 3. The first limiting component 41 is connected to the valve core 2, and the second limiting component 42 is connected to the valve body 1. Through the cooperation of the first limiting component 41 and the second limiting component 42, the positioner 3 and the valve core 2 are prevented from dislodging from the valve body cavity 10. Figures 1-2It can be seen that the first limiting assembly 41 is arranged at the top of the gear stopper 3 to prevent the gear stopper 3 from running out of the valve core 2, and the second limiting assembly 42 is connected to the valve body 1 and located above the first limiting assembly 41, so that the gear stopper 3 and the gear ball are prevented from running out, and the problem of gear failure is avoided, and the stability of the plug valve is improved. It should be noted that the "top", "bottom", "upper" and "lower" in the present application are based on the orientation and position of the drawings, and are only for the purpose of description.

[0045] In one preferred embodiment of the present application, as shown in Figures 1-2 The first limiting assembly 41 includes a limiting piece connected between the valve core 2 and the gear stopper 3 to limit the installation position of the gear stopper 3 on the valve core 2. The limiting piece can be a Figures 1-2 spring 411 as shown, or an elastic buckle arranged on the valve core 2, such as an installation groove arranged at the top of the valve core 2, the groove opening facing outward, and an elastic member and a buckle arranged in the installation groove, wherein the free end of the buckle extends to the side wall of the valve core 2, and the buckle can be pressed into the installation groove when the gear stopper 3 is installed. After the gear stopper 3 is installed in place, the buckle extends out of the installation groove under the action of the elastic member and abuts against the top of the gear stopper 3, preventing the gear stopper 3 from moving axially. Of course, it can also be other structures that can limit the gear stopper 3.

[0046] In one preferred embodiment of the present application, as shown in Figures 1-2 The limiting piece includes a snap spring 411, and the outer periphery of the valve core 2 is provided with a snap spring groove 21 for installing the snap spring 411, and the snap spring 411 is inserted into the snap spring groove 21 and abuts against the top surface of the gear stopper 3, preventing the gear stopper 3 from moving in the axial direction of the valve core 2. The snap spring 611 is also called a retaining ring or a snap ring, which can prevent the gear stopper 3 from moving axially by being assembled in the snap spring groove 21 on the outer periphery of the valve core 2, preventing the problems of the gear stopper 3, the gear ball running out and the gear failure.

[0047] In one preferred embodiment of the present application, as shown in Figures 1-3 The second limiting assembly 42 is located above the first limiting assembly 41, and the second limiting assembly 42 includes a limiting ring 421 connected to the top of the valve body 1, and the axial projection of the limiting ring 421 overlaps the axial projection of the gear stopper 3 to prevent the gear stopper 3 from running out of the valve body cavity 10. When the first limiting assembly 41 fails, the limiting ring 421 can prevent the gear stopper 3 and the valve core 2 from running out further, avoiding the problem of the valve core 2 running out during transportation.

[0048] In one preferred embodiment of the present application, as shown in Figures 1-3The second limiting assembly 42 shown further comprises a plurality of mounting blocks 422 arranged on the top of the valve body 1, and each mounting block 422 is internally provided with a U-shaped groove 4221, and the notches of each U-shaped groove 4221 respectively face the valve body cavity 10, and the plurality of U-shaped grooves 4221 jointly define a limiting ring 421. The height of the mounting block 422 does not exceed the top of the valve core 2, so that the second limiting assembly 42 can guarantee the limiting effect while not affecting the assembly between the valve core 2, the valve body 1 and the valve cover 5. The limiting of the gear 3 and the valve core 2 can be realized by only increasing two or more mounting blocks 422 and limiting rings 421, and the structure is reasonable, and the production and installation are convenient.

[0049] In a preferred embodiment of the utility model, as shown in Figures 1-3 The groove bottom of each U-shaped groove 4221 is arc-shaped, and the extension lines of the groove bottoms of the plurality of U-shaped grooves 4221 form a circular ring for limiting the limiting ring 421. The inner periphery of the circular ring corresponds to the outer diameter of the limiting ring 421, so that the plurality of U-shaped grooves 4221 jointly limit the limiting ring 421, and the limiting effect of the limiting ring 421 is guaranteed.

[0050] In a preferred embodiment of the utility model, as shown in Figure 1 , 3 The limiting ring 421 is provided with a notch 4211, so as to be inserted into the plurality of U-shaped grooves 4221. From Figures 1-2 The direction of the U-shaped groove 4221 buckle towards the valve body cavity 10 cannot be seen, and the notch 4211 can make the limiting ring 421 have a certain deformation, so as to facilitate the insertion of the limiting ring 421 into the plurality of U-shaped grooves 4221.

[0051] In a preferred embodiment of the utility model, as shown in Figure 1 , 2 The valve body 1 is further connected with a mounting column 11, a return spring and a gear bead, the mounting column 11 is connected to the top of the valve body 1 and is axially provided with a mounting hole 111; one end of the return spring is inserted into and fixed to the mounting hole 111, and the other end of the return spring extends towards the gear 3; the gear bead is fixed to the other end of the return spring, wherein the gear 3 is provided with a plurality of gear grooves 30, and the gear bead can be inserted into or separated from each gear groove 30 to realize the switching of different gears. The mutual cooperation of the gear 3, the gear bead and the return spring has a hand feeling feedback at each firepower gear, so that the user can know the firepower size in time, and the operation of the firepower adjustment is convenient.

[0052] Preferably, as shown in Figures 5-7The gear shifter 3 shown includes a first gear shift plate 31 and a second gear shift plate 32. The outer periphery of the first gear shift plate 31 has multiple first gear teeth 311, with adjacent first gear teeth 311 forming a gear shift groove 30. The second gear shift plate 32 is connected to the bottom of the first gear shift plate 31, and its outer periphery has multiple second gear teeth 312. The outer diameter of the first gear shift plate 31 is larger than the outer diameter of the second gear shift plate 32. Figures 5-7 It is easy to see that the first gear plate 31 and the second gear plate 32 are stepped. This design can reduce the friction area between the outer periphery of the gear shifter 3 and the gear ball, and reduce the rotational torque of the valve core 2.

[0053] Preferred, such as Figures 5-7 The longitudinal section of each first gear tooth 311 and second gear tooth 312 shown gradually decreases from the inside to the outside. That is, the top and bottom surfaces of the first gear tooth 311 are both provided with a first inclined surface 3111 of a certain slope, effectively reducing the friction area between the first gear tooth 311 and the valve body 1, and reducing the rotational torque of the valve core 2. The bottom surface of the second gear tooth 312 is provided with a second inclined surface 3121 of a certain slope, reducing the friction between the gear shifter 3 and the valve core 2, thereby reducing the rotational torque of the valve body 1.

[0054] Preferred, such as Figures 5-7 An oil reservoir 33 is formed between the multiple first gear teeth 311 and second gear teeth 312 shown. Generally, the valve core 2 is ground and lubricated. Excessive lubricating oil overflow will lead to an increase in the torque of the valve core 2 and the valve body 1. The oil reservoir 33 can provide an additional storage space for the valve body 1, prevent lubricating oil overflow, and ensure a smaller rotational torque.

[0055] In a preferred embodiment of this utility model, such as Figures 1-2 The mounting post 11 shown has a limiting groove 112 at one end near the valve body cavity 10 for limiting the limiting ring 421. The limiting groove 112 is located above the mounting hole 111. Since the mounting post 11 and multiple mounting blocks 422 are all located on the top surface of the valve body 1, and the mounting hole 111 on the mounting post 11 is used to guide the movement of the return spring, it needs to be installed as follows: Figures 1-2 As shown, since the limiting ring 421 is located above the shifter 3, a limiting groove 112 needs to be opened above the mounting hole 111 on the mounting post 11. This ensures the installation of the limiting ring 421 and further limits its movement, thus guaranteeing the stability of the limiting ring 421.

[0056] In a preferred embodiment of this utility model, such as Figure 1 The plug valve shown also includes a valve cover 5 and a valve stem 6. The valve cover 5 is connected to the valve body 1; the valve stem 6 passes through the valve cover 5 and is connected to the top of the valve core 2 to drive the valve core 2 to rotate in both directions.

[0057] Preferred, such as Figures 8-9The shown valve cover 5 includes a valve cover body 50 and a guide structure 51 for bidirectional guiding of the valve stem 6, the guide structure 51 including a first guide block 511 and a second guide block 512 connected to the inner side of the top of the valve cover body 50, the bottom of the first guide block 511 being inclined to the top thereof away from one side of the second guide block 512 to form a first guide surface 5111, and the bottom of the second guide block 512 being inclined to the top thereof away from one side of the first guide block 511 to form a second guide surface 5121, the first guide surface 5111 and the second guide surface 5121 being capable of guiding the forward and reverse movements of the valve stem 6. The present application limits the 0-degree position of the valve stem 6 by the first guide block 511 and the second guide block 512 of the valve cover 5, and the first guide surface 5111 and the second guide surface 5121 can guide the forward starting and reverse starting processes, that is, when igniting, the user can select forward starting, that is, counterclockwise rotation of the valve stem 6 for ignition, or reverse starting, that is, clockwise rotation of the valve stem 6 for ignition, as needed, to meet the bidirectional starting of the valve stem 6 and facilitate the user to achieve the desired load firepower by one rotation of the knob. Figure 9 The shown forward five gears and reverse three gears, the user only needs to rotate the valve stem 6 to the corresponding gear, which is simple and convenient to operate and improves the user experience.

[0058] In one preferred embodiment of the present application, as shown in Figures 8-9 The guide structure 51 also includes a guide plate 513 connected to the outer periphery of the valve stem 6, the top surface of the guide plate 513 being capable of abutting against the first guide surface 5111 and the second guide surface 5121 and being capable of driving the valve stem 6 to rotate clockwise or counterclockwise smoothly under the action of the first guide surface 5111 and the second guide surface 5121. The guide plate 513 in the present embodiment includes an annular segment sleeved on the outer periphery of the valve stem 6 and a straight segment for abutting against the first guide surface 5111 and the second guide surface 5121. When the stove is ignited, the valve stem 6 is pressed down and rotated to achieve ignition, and the guide plate 513 is pressed down and rotated with the valve stem 6, wherein the first guide surface 5111 or the second guide surface 5121 is away from the 0-degree limit after the knob is pressed down, giving the guide plate 513 and the valve stem 6 a smooth transition.

[0059] In one preferred embodiment of the present application, as shown in Figures 8-9The valve cover 5 shown further comprises a first limiting block 52 and a second limiting block 53, the first limiting block 52 is connected to one side of the valve cover body 50 close to the end of the first guide block 511, and a gap 520 is formed between the first limiting block 52 and the top of the valve cover body 50, for axially limiting the valve rod 6 rotated to 90 degrees; the second limiting block 53 is connected to the top of the valve cover body 50, for circumferentially limiting the valve rod 6. The first limiting block 52 can be 90-degree limiting, and the second limiting block 53 is 180-degree limiting. The gap 520 designed on the valve cover 5 has a depth of ±1mm in the range of the downstroke, and generally, the downstroke is 3.5mm, the depth of the gap 520 is between 2.5mm and 4.5mm. The function of the gap 520 is that when the plug valve is rotated to 90-degree limiting, and then continues to rotate downward, the downstroke cannot be achieved due to the limiting in the valve cover 5, and the downstroke can be continued, so that the explosive frying is started, thereby ensuring the explosive frying experience of the user. The second limiting block 53 and the first guide surface 5111 form a rotation range of the valve rod 6 in the forward direction, and the second limiting block 53 and the second guide surface 5121 form a rotation range of the valve rod 6 in the reverse direction. The limiting step in the prior art is cancelled, the swing of the tablet is reduced, and the problem of the fluctuation of the tablet when rotating from the large fire position to the small fire position or from the small fire position to the large fire position is avoided.

[0060] In the embodiments of the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, can also be detachable connection, or integral connection. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as a limitation on the embodiments of the present application. The device or unit indicated must have a specific direction, a specific orientation and operation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0062] In the description of the present application, the description of the terms "one embodiment", "one preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plug valve, characterized in that, include: Valve body (1) has valve body cavity (10); Valve core (2) is disposed in the valve body cavity (10); The gear shifter (3) is connected to the valve core (2) and can rotate with the valve core (2) to achieve gear switching; The limiting structure (4) includes a first limiting component (41) and a second limiting component (42) for limiting the installation position of the gear shifter (3). The first limiting component (41) is connected to the valve core (2), and the second limiting component (42) is connected to the valve body (1). The cooperation of the first limiting component (41) and the second limiting component (42) prevents the gear shifter (3) and the valve core (2) from dislodging from the valve body cavity (10).

2. The plug valve according to claim 1, characterized in that, The first limiting component (41) includes a limiting member (411) connected between the valve core (2) and the gear shifter (3) to limit the installation position of the gear shifter (3) on the valve core (2).

3. The plug valve according to claim 2, characterized in that, The limiting member (411) includes a retaining ring (4111). The outer periphery of the valve core (2) is provided with a retaining ring groove (21) for installing the retaining ring (4111). The retaining ring (4111) is inserted into the retaining ring groove (21) and abuts against the top surface of the gear shifter (3) to prevent the gear shifter (3) from moving along the axial direction of the valve core (2).

4. The plug valve according to claim 1, characterized in that, The second limiting component (42) is located above the first limiting component (41). The second limiting component (42) includes a limiting ring (421) connected to the top of the valve body (1). The axial projection of the limiting ring (421) overlaps with the axial projection of the gear shifter (3) to prevent the gear shifter (3) from dislodging from the valve body cavity (10).

5. The plug valve according to claim 4, characterized in that, The second limiting component (42) also includes a plurality of mounting blocks (422) disposed on the top of the valve body (1). Each mounting block (422) has a U-shaped groove (4221) on its inner side. The opening of each U-shaped groove (4221) faces the valve body cavity (10). The plurality of U-shaped grooves (4221) together limit the limiting ring (421).

6. The plug valve according to claim 5, characterized in that, The bottom of each U-shaped groove (4221) is arc-shaped, and the extension lines of the bottoms of the plurality of U-shaped grooves (4221) form a ring for limiting the positioning ring (421).

7. The plug valve according to claim 5, characterized in that, The limiting ring (421) has a notch (4211) to allow it to be inserted into the plurality of the U-shaped grooves (4221).

8. The plug valve according to claim 4, characterized in that, The valve body (1) is also connected to: Mounting post (11) is connected to the top of the valve body (1) and has mounting holes (111) along the axial direction. The reset spring has one end inserted into and fixed to the mounting hole (111), and the other end extends toward the gear (3); The gear bead is fixed to the other end of the reset spring. The gear positioner (3) has multiple gear slots (30). The gear bead can be inserted into or removed from each gear slot (30) to achieve switching between different gears.

9. The plug valve according to claim 8, characterized in that, The mounting post (11) has a limiting groove (112) at one end near the valve body cavity (10) for limiting the limiting ring (421), and the limiting groove (112) is located above the mounting hole (111).

10. The plug valve according to claim 8, characterized in that, Also includes: Valve cover (5), the valve cover (5) is connected to the valve body (1); The valve stem (6) passes through the valve cover (5) and is connected to the top of the valve core (2) to drive the valve core (2) to rotate in both directions.

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