CN112944008B

CN112944008B - Plug valve and gas stove

Info

Publication number: CN112944008B
Application number: CN202110139369.0A
Authority: CN
Inventors: 王文奇; 姚文虎; 李光明
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2023-03-24
Anticipated expiration: 2041-02-01
Also published as: CN112944008A

Abstract

The invention discloses a plug valve and a gas stove, wherein the plug valve comprises a valve seat, a valve rod, a first gear, a second gear and a driving mechanism, the valve rod is arranged on the valve seat, the first gear is arranged on the valve rod, and the second gear is rotatably arranged on the valve seat and is meshed with the first gear. The driving mechanism comprises a motor and a steering device in driving connection with the motor, and the motor and the steering device are arranged on the valve seat. The plug valve has a manual mode and an automatic mode, in the manual mode, the steering device and the second gear are mutually independent, in the automatic mode, the steering device drives the second gear to rotate. The technical scheme of the invention can avoid the condition that the gas stove cannot be normally used due to the failure or power failure of the motor.

Description

Plug valve and gas stove

Technical Field

The invention relates to the field of gas appliances, in particular to a plug valve and a gas stove.

Background

At present, in some gas stoves, a stepping motor and a controller are installed on the gas stove, and the stepping motor is controlled by the controller to drive a valve rod to rotate, so that the gas stove can be intelligently controlled in starting and closing and firepower. However, when only the stepping motor is provided to drive the valve rod to rotate, if the stepping motor or the controller fails or when no power supply is available, the gas stove cannot be frequently used, and the gas stove is very inconvenient for users to use.

Disclosure of Invention

The invention mainly aims to provide a plug valve, aiming at avoiding the situation that a gas stove cannot be normally used due to motor failure or power failure.

In order to achieve the above object, the present invention provides a plug valve, including:

a valve seat;

the valve rod is arranged on the valve seat, and a first gear is arranged on the valve rod;

the second gear is rotatably arranged on the valve seat and is meshed with the first gear; and

the driving mechanism comprises a motor and a steering device which is connected with the motor in a driving way, and the motor and the steering device are both arranged on the valve seat;

the plug valve has a manual mode and an automatic mode, in the manual mode, the steering device and the second gear are mutually independent, in the automatic mode, the steering device drives the second gear to rotate.

The plug valve in the scheme can realize the function of automatically adjusting firepower through the rotation of the adjusting valve rod of the driving mechanism, and can also avoid the condition that a user cannot normally use the gas stove due to the faults or power failure of the motor and the steering device.

Optionally, the second gear is provided with a shifting portion, the shifting portion has two first abutting surfaces distributed along the circumferential direction of the second gear, and the steering device is slidably mounted on the valve seat and moves along the circumferential direction of the motor by taking the axis of the second gear as a shaft; the steering device is provided with an abutting piece capable of moving along the axial direction of the second gear, in the manual mode, the abutting piece and the shifting portion are arranged at an interval in the axial direction of the second gear, in the automatic mode, the motor drives the steering device to move along the circumferential direction of the motor, and the abutting piece abuts against one of the first abutting surfaces to drive the second gear to rotate.

The structure is simple, the driving mechanism is convenient to be added on the basis of the conventional plug valve, and the production cost is favorably reduced.

Optionally, the steering device includes a sliding base and a connecting rod, the sliding base is slidably mounted on the valve seat and is located below the second gear, the sliding base has a guide portion and a limiting portion, the guide portion gradually extends in an inclined manner in a direction approaching the second gear in a moving direction of the sliding base, and the limiting portion is disposed at an upper end of the guide portion; the butt piece is slidably mounted on the guide portion, the butt piece is provided with a second butt surface, one end of the connecting rod is connected with the rotating shaft of the motor, the other end of the connecting rod is located on one side of the second butt surface, when the motor rotates, the connecting rod is in butt joint with the second butt surface to drive the butt piece to slide upwards relative to the guide portion, until the butt piece is in butt joint with the limiting portion, the motor drives the sliding base to move along the circumferential direction of the motor through the connecting rod, and when the butt piece is in butt joint with the first butt surface, the second gear is driven to rotate.

So set up for the motor can also drive the butt piece towards the motion of second gear when the drive turns to the device motion, and when the motor stall, the butt piece can slide to the first position down along the guide part automatically under the action of gravity. The number of parts of the driving mechanism is reduced, and the structure of the plug valve can be simplified.

Optionally, the guide portion is a guide slope.

Therefore, the structure of the sliding base is simpler, and the structure of the steering device can be simplified.

Optionally, the sliding base has two guiding inclined planes, the two guiding inclined planes extend towards a direction away from each other, and one side of any one of the guiding inclined planes away from the other guiding inclined plane is provided with the limiting part.

Therefore, the valve rod can be driven by one sliding base to rotate forwards and backwards, the condition that a steering adjusting mechanism is additionally arranged is avoided, and the mechanism of the steering device can be simplified.

Optionally, the abutting part is provided with a sliding inclined surface corresponding to each of the two guiding inclined surfaces, when the motor rotates clockwise, the abutting part slides relative to one of the guiding inclined surfaces through one sliding inclined surface, and when the motor rotates counterclockwise, the abutting part slides relative to the other guiding inclined surface through the other sliding inclined surface.

So can only set up a butt piece, can realize that the motor drive second gear corotation and reversal can reduce the spare part quantity that turns to the device to the structure and the assembly process of plug valve can be simplified.

Optionally, the abutting piece is provided with a mounting hole, the connecting rod is arranged in the mounting hole, the size of the mounting hole in the axial direction of the second gear is larger than that of the connecting rod, and the second abutting surface is formed on the hole wall of the mounting hole.

Therefore, the connecting rod can be prevented from limiting the upward movement of the abutting part along the guide inclined surface, and the abutting part can be ensured to move from the first position to the second position smoothly. And through locating the connecting rod in the mounting hole, can guarantee to assemble the reliability between connecting rod and the butt piece.

Optionally, the steering device includes two of the abutting members, one of the abutting members is slidably mounted on one of the guide inclined surfaces, the other of the abutting members is slidably mounted on the other of the guide inclined surfaces, second abutting surfaces of the two abutting members are arranged facing each other, and the link is arranged between the two second abutting surfaces.

So when making the motor just reverse, can drive the second gear through different butt pieces and rotate, can reduce the size of butt piece to make the connecting rod drive the butt piece motion more easily.

Optionally, an elastic member is disposed between the abutting member and the limiting portion, and when the abutting member moves toward the limiting portion along the guide portion, the elastic member is in a compressed state.

So when the motor stall, can make the butt reset to the first position. The resetting reliability of the abutting part is improved.

Optionally, a receiving groove is formed in a surface of the abutting part facing the limiting part, and one end of the elastic part is arranged in the receiving groove.

The installation space of the elastic piece is increased, so that the feasibility of arranging the elastic pieces with different elastic forces and types between the abutting part and the limiting part is improved, namely the selectable range of the elastic pieces is enlarged.

Optionally, the toggle part is convexly arranged on the lower surface of the second gear.

Therefore, when the abutting part does not need to move to the second position, the abutting part can be just abutted to the first abutting surface, the matching requirement is reduced, and the assembly precision is reduced, and the assembly process is simplified.

Optionally, the dial portion protrudes laterally towards the second gear, and a portion of the dial portion protruding laterally has the first abutment surface.

So as to increase the distance between the first abutting surface and the second gear axis, so that the force arm when the abutting part drives the second gear to rotate is longer, and the motor drives the second gear to rotate more easily.

Optionally, the second gear is provided with a plurality of the poking parts, and the plurality of the poking parts are uniformly distributed at intervals along the circumferential direction of the second gear.

Through setting up a plurality of stirring portions, increased the position that can be by the butt piece butt in the second gear circumference to after the butt piece moves to the second position, when turning to device circumferential motion, make the butt piece can as early as possible with the stirring portion butt on the second gear, can accelerate the start-up speed of automatic fire adjustment function.

Optionally, the plug valve still includes detection switch, detection switch fixed mounting in the disk seat, it is a plurality of toggle portion all can trigger detection switch, with through detection switch is triggered the number of times and calculates the turned angle of valve rod.

Through utilizing the toggle part to trigger the detection switch, can avoid additionally setting up on the second gear and trigger the structure, can simplify the structure of plug valve, also can reduce the assembly process of plug valve.

Optionally, the valve seat is provided with a guide structure, the guide structure is arranged around the motor and is in a closed ring shape, and the steering device is slidably mounted on the guide structure.

So set up, can enough provide the guide effect for the motion that turns to the device, also can carry on spacingly to the motion that turns to the device, can effectively prevent to turn to the device in the condition of motion skew, promoted the stability and the reliability of the motion that turns to the device.

Optionally, the valve seat includes a valve main body and a fixing shell, the valve rod penetrates through the fixing shell, the first gear and the driving mechanism are both installed in the fixing shell, and the fixing shell is detachably connected with the valve main body.

Can make a dismantled and assembled switching module as an organic whole of connection with actuating mechanism, first gear, second gear and set casing etc to the modularization installation of being convenient for improves assembly efficiency, can also be convenient for install this switching module additional on ordinary gas-cooker.

The invention also provides a gas stove which comprises the plug valve.

Through increasing electrical control mechanism such as actuating mechanism, first gear and second gear in the plug valve main part, need not additionally set up gas pipeline structure, reduced the degree of difficulty and the gas leakage risk of mounting process, do not influence original mounting process and the gas circuit mounting process of gas-cooker. The gas-cooker of this scheme is identical with the little drain pan gas-cooker of general use to the user need not enlarge the mounting hole of installation gas-cooker when the gas-cooker of this scheme of adoption, has reduced the resistance that the customer changed the gas-cooker, thereby has reduced the sale threshold of this scheme gas-cooker, is favorable to promoting market competition.

According to the technical scheme, the valve rod of the plug valve is provided with the first gear, the valve seat of the plug valve is provided with the second gear and the driving mechanism, the second gear is rotatably arranged on the valve seat and is meshed with the first gear, and the driving mechanism comprises the motor and the steering device which is connected with the motor in a driving mode. When the plug valve is in a manual mode, the steering device and the second gear can be mutually independent, and the second gear cannot drive the rotating shaft of the steering device and the motor to rotate, so that the torque of the manual rotary valve rod can be reduced, and even if the steering device has faults such as jamming, the manual rotary valve rod of a user is not influenced. When the plug valve is in an automatic mode, the steering device can be connected with the second gear in a constrained mode, so that when the motor drives the steering device to move, the second gear can be driven to rotate, the second gear drives the first gear and the valve rod to rotate, and the function of automatically adjusting firepower is realized through the driving mechanism. That is, the plug valve in the scheme can realize the function of automatically adjusting the firepower through the rotation of the adjusting valve rod of the driving mechanism, can also avoid the condition that a user cannot normally use the gas stove due to the faults or power failure of the motor and the steering device, and can be convenient for the user to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a plug valve of the present invention;

FIG. 2 is an exploded view of the stationary housing of FIG. 1 and the first gear, the second gear and the steering gear within the stationary housing;

FIG. 3 is a schematic view of the first and second gears of FIG. 2;

FIG. 4 is a schematic structural view of the steering device of FIG. 2;

FIG. 5 is an exploded view of the steering device of FIG. 4;

FIG. 6 is a schematic view of the steering mechanism in another embodiment of the plug valve of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a plug valve which is used for a gas stove.

In an embodiment of the present invention, referring to fig. 1 and 2, the plug valve includes a valve seat 10, a valve stem 20, a first gear 30, a second gear 40 and a driving mechanism, wherein the valve stem 20 is disposed on the valve seat 10, the first gear 30 is disposed on the valve stem 20, and the second gear 40 is rotatably disposed on the valve seat 10 and is engaged with the first gear 30. The driving mechanism comprises a motor 50 and a steering device 60 which is connected with the motor 50 in a driving way, and the motor 50 and the steering device 60 are both arranged on the valve seat 10. The plug valve has a manual mode in which the steering device 60 and the second gear 40 are independent of each other, and an automatic mode in which the steering device 60 drives the second gear 40 to rotate.

In this embodiment, a mounting portion is provided at one end of the valve rod 20, and the mounting portion is used for mounting a knob so as to manually select the valve rod 20 through the knob. The manual mode refers to a mode in which the user manually rotates the valve stem 20 to adjust the magnitude of the heating power, and the automatic mode refers to a mode in which the magnitude of the heating power is automatically adjusted by driving the valve stem 20 to rotate by the driving mechanism. Specifically, the motor 50 can drive the steering device 60 to move, and in the manual mode, because the steering device 60 and the second gear 40 are independent of each other and are not connected, when the user rotates through manually adjusting the valve rod 20, the rotating shafts of the steering device 60 and the motor 50 are not driven to rotate, so that the torque generated when the valve rod 20 is manually rotated can be reduced. In the automatic mode, the steering device 60 is connected to the second gear 40 in a constrained manner, so that when the motor 50 drives the steering device 60 to move, the second gear 40 can be driven to rotate, and the first gear 30 and the valve rod 20 can be driven to rotate by the second gear 40. The first gear 30 may be sleeved on the valve rod 20, or may be connected to the valve rod 20 through other connecting structures. In this embodiment, the first gear 30 is sleeved on the valve rod 20 to simplify the structure of the plug valve.

According to the technical scheme, the first gear 30 is arranged on the valve rod 20 of the plug valve, the second gear 40 and the driving mechanism are arranged on the valve seat 10 of the plug valve, so that the second gear 40 can be rotatably arranged on the valve seat 10 and is meshed with the first gear 30, and the driving mechanism comprises the motor 50 and the steering device 60 which is connected with the motor 50 in a driving mode. When the plug valve is in the manual mode, the steering device 60 and the second gear 40 can be mutually independent, and at the moment, the second gear 40 cannot drive the rotating shafts of the steering device 60 and the motor 50 to rotate, so that the torque when the valve rod 20 is manually rotated can be reduced, and even if the steering device 60 is blocked and the like, the manual rotation of the valve rod 20 by a user is not influenced. When the plug valve is in the automatic mode, the steering device 60 can be connected with the second gear 40 in a constrained manner, so that when the motor 50 drives the steering device 60 to move, the second gear 40 can be driven to rotate, and then the second gear 40 drives the first gear 30 and the valve rod 20 to rotate, so that the function of automatically adjusting firepower is realized through the driving mechanism. That is, the plug valve in the present solution can not only adjust the rotation of the valve rod 20 through the driving mechanism to realize the function of automatically adjusting the fire power, but also avoid the situation that the user cannot normally use the gas stove due to the failure or power failure of the motor 50 and the steering device 60, and is convenient for the user to use.

Referring to fig. 1 to 5, in an embodiment, the second gear 40 is provided with a toggle portion 41, the toggle portion 41 has two first abutting surfaces 42 distributed along the circumferential direction of the second gear 40, and the steering device 60 is slidably mounted on the valve seat 10 and moves along the circumferential direction of the motor 50 with the axis of the second gear 40 as the shaft. The steering device 60 has an abutting member 62 movable along the axial direction of the second gear 40, in the manual mode, the abutting member 62 and the toggle portion 41 are arranged at an interval in the axial direction of the second gear 40, in the automatic mode, the motor 50 drives the steering device 60 to move along the circumferential direction of the motor 50, and the abutting member 62 abuts against one of the first abutting surfaces 42 to drive the second gear 40 to rotate. Specifically, the rotation shaft of the motor 50 is substantially collinear with the axis of the second gear 40, and the steering device 60 can perform a circular motion about the axis of the second gear 40. The abutment member 62 has a first position spaced from the dial portion 41 and a second position overlapping the dial portion 41 in the axial direction of the second gear 40, and in the manual mode, the abutment member 62 is in the first position so that the steering gear 60 and the second gear 40 are independent of each other. In the automatic mode, the abutting member 62 is at the second position, and when the motor 50 drives the steering device 60 to move along the circumferential direction of the motor 50, the abutting member 62 can abut against one of the first abutting surfaces 42 of the toggle portion 41, so as to drive the second gear 40 to rotate. The structure is simple, the driving mechanism is convenient to be added on the basis of the conventional plug valve, and the production cost is favorably reduced.

Of course, in other embodiments, the steering device 60 may be fixed on the rotating shaft of the motor 50, in the manual mode, the abutting part 62 of the steering device 60 is spaced from the second gear 40, and in the automatic mode, the abutting part 62 of the steering device 60 is connected with the second gear 40, so as to drive the second gear 40 to rotate when the motor 50 rotates. The steering device 60 may not move circularly, and for example, the steering device 60 may move repeatedly in a certain arc with the axis of the second gear 40 as an axis.

Wherein, in this embodiment, the pivot of motor 50 is located to the second gear 40 cover, and second gear 40 and motor 50's pivot clearance fit to drive second gear 40 and rotate when avoiding motor 50's pivot to rotate, the location installation of second gear 40 so of being convenient for has reduced the structure that additionally sets up the installation of confession second gear 40 on valve seat 10 moreover, is favorable to simplifying the structure of plug valve. Wherein a bearing may also be provided between the second gear 40 and the rotating shaft of the motor 50. Of course, in other embodiments, an additional mounting shaft may be provided on the valve seat 10, and the second gear 40 may be mounted on the mounting shaft.

In one embodiment, the steering device 60 includes a sliding base 61 and a connecting rod 63, the sliding base 61 is slidably mounted on the valve seat 10 and is located below the second gear 40, the sliding base 61 has a guide portion (refer to reference numeral "612" in fig. 4) and a limiting portion 613, the guide portion extends obliquely in a direction approaching the second gear 40 gradually in a moving direction of the sliding base 61, and the limiting portion 613 is provided at an upper end of the guide portion. The abutting member 62 is slidably mounted on the guiding portion, the abutting member 62 has a second abutting surface 621, one end of the connecting rod 63 is connected to the rotating shaft of the motor 50, and the other end is located on one side of the second abutting surface 621, when the motor 50 rotates, the connecting rod 63 abuts against the second abutting surface 621 to drive the abutting member 62 to slide upward relative to the guiding portion, when the abutting member 62 abuts against the limiting portion 613, the motor 50 drives the sliding base 61 to move along the circumferential direction of the motor 50 through the connecting rod 63, and when the abutting member 62 abuts against the first abutting surface 42, the second gear 40 is driven to rotate.

Specifically, the slide base 61 is capable of circular motion about the axis of the second gear 40. In the automatic mode, when the motor 50 rotates, the link 63 rotates with the rotation shaft of the motor 50, and when the link 63 abuts against the second abutment surface 621 of the abutment 62, the abutment 62 can slide upward along the guide portion until the abutment 62 abuts against the stopper 613 of the slide base 61, and the abutment 62 and the slide base 61 are relatively fixed. At this time, under the abutting action of the abutting piece 62, the sliding base 61 slides relative to the valve seat 10, and when the abutting piece 62 abuts against one of the first abutting surfaces 42 of the toggle part 41, the second gear 40 can be driven to rotate. After the motor 50 stops rotating, the abutting piece 62 can slide downwards along the guide part to the first position under the action of gravity. The arrangement is such that the motor 50 drives the steering gear 60 and simultaneously drives the abutment member 62 towards the second gear 40, and when the motor 50 stops rotating, the abutment member 62 automatically slides downwards along the guide to the first position under the action of gravity. The number of parts of the driving mechanism is reduced, and the structure of the plug valve can be simplified. Of course, in other embodiments, a motor 50 may be additionally provided to drive the abutment member 62 between the first position and the second position.

In order to ensure that the sliding base 61 can be fixed relative to the valve seat 10 when the abutment 62 moves upward along the guide portion relative to the sliding base 61, the frictional resistance between the abutment 62 and the guide portion may be reduced, for example, the surface roughness of the contact portion between the abutment 62 and the guide portion may be reduced, or a lubricating medium such as lubricating oil may be provided between the abutment 62 and the guide portion. It is also possible to increase the frictional resistance between the slide base 61 and the valve seat 10, for example, to increase the surface roughness of the portion of the slide base 61 in contact with the valve seat 10, or to provide a damping structure or the like between the valve seat 10 and the slide base 61.

In one embodiment, the steering device 60 further includes a fixing sleeve 65, one end of the connecting rod 63 is fixed to the fixing sleeve 65, and the fixing sleeve 65 is sleeved on the rotating shaft of the motor 50. Therefore, the connecting rod 63 can be conveniently mounted, and when the rotating shaft of the motor 50 is sleeved with the fixing sleeve 65, the connecting area between the fixing sleeve 65 and the rotating shaft of the motor 50 is large, the stability is better, and the stability of the connecting rod 63 is improved. Of course, in other embodiments, the connecting rod 63 may be welded to the rotating shaft of the motor 50, or a mounting hole 623 may be provided on the rotating shaft of the motor 50, the connecting rod 63 may be inserted into the mounting hole 623, and the like.

In one embodiment, the guide is a guide ramp 612. That is, the abutting piece 62 is slidably mounted on the guide slope 612, so that the structure of the slide base 61 is simplified, and the structure of the steering apparatus 60 can be simplified. Of course, in other embodiments, the guiding portion may be a guide post, and the abutting member 62 is slidably sleeved on the guide post. In one embodiment, the limiting portion 613 is integrally formed with the sliding base 61, that is, the limiting portion 613 is protruded on the upper end of the guiding inclined surface 612. This further simplifies the structure of the slide base 61 and reduces the number of steps for assembling the stopper 613. Of course, in other embodiments, the limiting portion 613 and the slide base 61 may be provided separately.

In an embodiment, the sliding base 61 has two guiding inclined surfaces 612, the two guiding inclined surfaces 612 extend in a direction away from each other, and a limiting portion 613 is disposed on a side of any one of the guiding inclined surfaces 612 away from the other guiding inclined surface 612. That is, the two guiding inclined planes 612 are substantially in a "V" shape, so that when the motor 50 rotates forward, the connecting rod 63 can drive the abutting piece 62 to slide on one of the guiding inclined planes 612, and the abutting piece 62 abuts against one of the first abutting surfaces 42 of the toggle part 41, thereby driving the second gear 40 to rotate forward. When the motor 50 rotates reversely, the connecting rod 63 can drive the abutting piece 62 to slide on the other guiding inclined surface 612, and the abutting piece 62 abuts against the other first abutting surface 42 of the toggle part 41, so as to drive the second gear 40 to rotate reversely. Thus, the valve rod 20 can be driven to rotate forward and backward by the sliding base 61, so that the condition of additionally arranging a steering adjusting mechanism is avoided, and the mechanism of the steering device 60 can be simplified.

In an embodiment, the abutting element 62 is provided with a sliding inclined surface 622 corresponding to each of the two guiding inclined surfaces 612, when the motor 50 rotates clockwise, the abutting element 62 slides relative to one of the guiding inclined surfaces 612 through one sliding inclined surface 622, and when the motor 50 rotates counterclockwise, the abutting element 62 slides relative to the other guiding inclined surface 612 through the other sliding inclined surface 622. That is, the two sliding inclined surfaces 622 of the contact piece 62 are also substantially in the form of a "V" surface, and the two sliding inclined surfaces 622 of the contact piece 62 and the two guide inclined surfaces 612 of the slide base 61 are inclined at substantially the same angle. Thus, only one abutting piece 62 is arranged, the motor 50 can drive the second gear 40 to rotate forwards and backwards, the number of parts of the steering device 60 can be reduced, and the structure and the assembly process of the plug valve can be simplified.

Further, in an embodiment, the abutment member 62 is provided with a mounting hole 623, the link 63 is provided in the mounting hole 623, the dimension of the mounting hole 623 in the axial direction of the second gear 40 is larger than that of the link 63, and a hole wall of the mounting hole 623 is formed with a second abutment surface 621. Specifically, the link 63 is a round rod, the mounting hole 623 may be a circular hole, an elliptical hole, or a long hole (a waistline hole), the mounting hole 623 is a circular hole, and the diameter of the mounting hole 623 is larger than the diameter of the link 63. When the abutting piece 62 is at the first position, the link 63 is spaced from the upper hole wall of the mounting hole 623, so as to avoid the link 63 from restricting the upward movement of the abutting piece 62 along the guide slope 612, and ensure that the abutting piece 62 can smoothly move from the first position to the second position. Further, by disposing the link 63 in the mounting hole 623, the reliability of the fitting between the link 63 and the abutment 62 can be ensured. When the abutment 62 moves to the second position, the link 63 may be spaced from or just in contact with the upper side hole wall of the mounting hole 623. Of course, in other embodiments, the link 63 may be an elliptical rod or a polygonal rod, such as a three-deformed rod, a quadrangular rod, a pentagonal rod, or a hexagonal rod, etc.

Referring to fig. 1, 3 and 6, in another embodiment, the steering device 60 includes two abutting members 62, wherein one abutting member 62 is slidably mounted on one guiding inclined surface 612, the other abutting member 62 is slidably mounted on the other guiding inclined surface 612, the second abutting surfaces 621 of the two abutting members 62 are disposed facing each other, and the link 63 is disposed between the two second abutting surfaces 621. Specifically, each abutment 62 has a sliding slope 622, and the abutment 62 is slidably connected with the guiding slope 612 through the sliding slope 622. When the motor 50 rotates forward, the connecting rod 63 can abut against the second abutting surface 621 of one of the abutting pieces 62, so as to drive the abutting piece 62 to slide on the corresponding guiding inclined surface 612, and when the abutting piece 62 abuts against one of the first abutting surfaces 42 of the dial portion 41, the second gear 40 is driven to rotate forward. When the motor 50 rotates reversely, the connecting rod 63 can abut against the second abutting surface 621 of the other abutting piece 62, so that the abutting piece 62 is driven to slide on the corresponding guide inclined surface 612, and when the abutting piece 62 abuts against the other first abutting surface 42 of the toggle part 41, the second gear 40 is driven to rotate reversely. Therefore, when the motor 50 rotates forward and backward, the second gear 40 can be driven to rotate by the different abutting pieces 62, and the size of the abutting pieces 62 can be reduced, so that the connecting rod 63 can drive the abutting pieces 62 to move more easily.

When the steering device 60 includes two abutting members 62, in an embodiment, the sliding base 61 is provided with a limiting groove 614, the limiting groove 614 is located between the upper end of the guiding inclined plane 612 and the limiting portion 613, the abutting member 62 has a limiting protrusion 625 extending into the limiting groove 614 and capable of moving in the limiting groove 614, when the abutting member 62 moves to the first position, the limiting protrusion 625 can be larger than the groove sidewall of the limiting groove 614 facing the limiting portion 613 to abut against, so as to limit the abutting member 62 from moving towards the other abutting member 62, thereby ensuring the reliability of the two abutting members 62.

In an embodiment, an elastic element 64 is disposed between the abutting element 62 and the limiting portion 613, and when the abutting element 62 moves along the guiding portion toward the limiting portion 613, the elastic element 64 is in a compressed state. That is, when the abutting member 62 moves to the second position, the elastic member 64 has a tendency to urge the abutting member 62 to move to the first position, so that the abutting member 62 can be reset to the first position when the motor 50 stops rotating. The resetting reliability of the abutting piece 62 is improved. When one abutting member 62 is provided, the elastic member 64 may be provided between one of the limiting portions 613 and the abutting member 62, or the elastic member 64 may be provided between each of the limiting portions 613 and the abutting member 62. When two abutting members 62 are provided, an elastic member 64 is disposed between each abutting member 62 and the corresponding limiting portion 613. The elastic member 64 may be a compression spring or a rubber member, etc. Of course, in other embodiments, the resilient member 64 may not be provided.

In an embodiment, a receiving groove 624 is disposed on a surface of the abutting member 62 facing the limiting portion 613, and one end of the elastic member 64 is disposed in the receiving groove 624. This corresponds to an increase in the installation space of the elastic member 64, thereby increasing the possibility of providing different elastic forces and types of elastic members 64 between the abutting member 62 and the stopper portion 613, i.e., increasing the selectable range of the elastic members 64. Thus, during assembly, it is convenient to select a suitable elastic member 64 to ensure that the link 63 can urge the abutment member 62 from the first position to the second position, and to ensure that the elastic member 64 can drive the abutment member 62 to move from the second position to the first position. In addition, after the accommodating groove 624 is provided, when the abutting member 62 moves to the second position, the elastic member 64 in a compressed state can be accommodated in the accommodating groove 624, so as to ensure that the abutting member 62 can abut against the limiting portion 613, and at this time, the limiting portion 613 can also serve as a supporting structure for supporting the abutting member 62, so as to ensure that the abutting member 62 is relatively stable in the process of driving the second gear 40 to rotate, thereby improving the stability of the steering apparatus 60. Of course, in other embodiments, the accommodating groove 624 may not be provided.

Referring to fig. 1, 3 and 4, in an embodiment, the toggle portion 41 is protruded on a lower surface of the second gear 40. Compare when for setting up the groove structure at second gear 40 lower surface in toggle 41, when needing to guarantee that butt piece 62 moves to the second position, butt piece 62 can just insert in the groove structure, so to the cooperation requirement higher, and the precision is difficult to guarantee. By projecting the striking part 41 on the lower surface of the second gear 40, when the abutting member 62 moves to the second position under the driving of the motor 50, even if the abutting member 62 and the striking part 41 are spaced in the circumferential direction of the second gear 40, the abutting member 62 can abut on one of the first abutting surfaces 42 of the striking part 41 along with the circumferential movement of the slide base 61. When the abutting piece 62 does not need to move to the second position, the abutting piece 62 can just abut against the first abutting surface 42, the matching requirement is reduced, and the assembly precision is reduced, and the assembly process is simplified. Of course, in other embodiments, the toggle portion 41 may also be a groove structure recessed in the lower surface of the second gear 40.

In an embodiment, the toggle part 41 protrudes laterally of the second gear 40, the laterally protruding portion of the toggle part 41 having a first abutment surface 42. That is, the abutting part 62 abuts against the portion of the toggle part 41 protruding towards the lateral direction of the second gear 40, which is equivalent to increase the distance between the first abutting surface 42 and the axis of the second gear 40, so that the moment arm when the abutting part 62 drives the second gear 40 to rotate is longer, and the motor 50 drives the second gear 40 to rotate more easily. Of course, in other embodiments, the toggle part 41 may be only provided on the lower surface of the second gear 40.

In an embodiment, the second gear 40 is provided with a plurality of striking parts 41, and the plurality of striking parts 41 are uniformly distributed along the circumference of the second gear 40. I.e. the number of the dial parts 41 on the second gear 40 is at least two, in particular the number of the dial parts 41 may be two, three, four, five or six, etc. Each toggle part 41 has two first abutting surfaces 42, and when the second gear 40 is driven to rotate by the abutting piece 62, the abutting piece 62 can abut against the first abutting surface 42 of one of the toggle parts 41. By arranging the plurality of toggle parts 41, the positions of the second gear 40 which can be abutted by the abutting part 62 in the circumferential direction are increased, so that after the abutting part 62 moves to the second position, when the steering device 60 moves in the circumferential direction, the abutting part 62 can be abutted with the toggle parts 41 on the second gear 40 as soon as possible, and the starting speed of the automatic fire adjusting function can be increased. Of course, in other embodiments, only one toggle part 41 may be provided.

Referring to fig. 1 to 3, in an embodiment, the plug valve further includes a detection switch 70, the detection switch 70 is fixedly mounted on the valve seat 10, and the plurality of toggle portions 41 can trigger the detection switch 70, so as to calculate the rotation angle of the valve rod 20 according to the number of times the detection switch 70 is triggered. Specifically, the detection switch 70 is electrically connected to the motor 50, and when the second gear 40 is continuously rotated in the same direction, the plurality of toggle parts 41 can sequentially trigger the detection switch 70. When the second gear 40 is rotated in the first direction by the driving of the motor 50 and the steering device 60, the detection switch 70 is triggered by the toggle part 41 every time, which indicates that the first gear 30 and the valve rod 20 are rotated by a certain angle, and at this time, the firepower gear of the gas stove can be set to be increased by one gear. When the second gear 40 rotates in the second direction, the detection switch 70 is triggered by the toggle part 41 every time, which means that the first gear 30 and the valve rod 20 rotate in the opposite direction for a certain angle, and at this time, the firepower gear of the gas stove can be set to be reduced by one gear. Wherein the first direction and the second direction are opposite circumferential directions.

The first direction is taken as a counterclockwise direction for example, but not limited thereto. When the first direction is counterclockwise, the second direction is clockwise. When the plug valve is mounted on the gas range, the detection switch 70 is electrically connected to a controller of the gas range. When the detection switch 70 is triggered by the toggle part 41 under the driving of the motor 50 and the steering device 60, the controller of the gas range can detect the trigger signal generated by the detection switch 70. The rotation angle of the valve rod 20 and the fire gear position reached by the rotation of the valve rod 20 can be confirmed by recording the number of times the detection switch 70 is triggered, so that the gear position change in the rotation process of the valve rod 20 and the gear position to be controlled can be calculated by a controller. Thus, the toggle part 41 is utilized to trigger the detection switch 70, so that the additional arrangement of a trigger structure on the second gear 40 can be avoided, the structure of the plug valve can be simplified, and the assembly process of the plug valve can be reduced. Of course, in other embodiments, a trigger structure for triggering the detection switch 70 may be additionally provided on the second gear 40.

In one embodiment, the valve seat 10 is provided with a guide structure disposed around the motor 50 and having a closed loop shape, and the steering device 60 is slidably mounted to the guide structure. Namely, the sliding base 61 is in sliding connection with the guide structure, so that the guide function can be provided for the movement of the steering device 60, the movement of the steering device 60 can be limited, the deviation of the steering device 60 in the movement process can be effectively prevented, and the stability and reliability of the movement of the steering device 60 are improved. Of course, in other embodiments, no guide structure may be provided.

The specific structure of the guiding structure can be various, for example, in this embodiment, the guiding structure is a guiding groove 13 disposed on the valve seat 10, and the steering device 60 (the sliding base 61) is slidably mounted in the guiding groove 13, so that the guiding structure is simple in structure and convenient to process and manufacture. Of course, in other embodiments, the guiding structure may be a rail structure protruding from the surface of the valve seat 10, or the like.

In an embodiment, when the abutting member 62 moves to the second position, the abutting member 62 is partially located in the guide groove 13, so that the abutting member 62 can be limited by the guide groove 13, the movement of the abutting member 62 toward a direction away from the axis of the second gear 40 or toward the axis of the second gear 40 can be reduced, and the reliability of the abutting member 62 is ensured. Of course, in other embodiments, a limiting rib may be provided on the sliding base 61 to limit the movement of the abutting piece 62 in a direction away from the axis of the second gear 40 or close to the axis of the second gear 40.

In one embodiment, the valve seat 10 includes a valve main body 11 and a fixed housing 12, the valve rod 20 is disposed through the fixed housing 12, the first gear 30 and the driving mechanism are both installed in the fixed housing 12, and the fixed housing 12 is detachably connected to the valve main body 11. Namely, the driving mechanism, the first gear 30, the second gear 40, the fixed shell 12 and the like can be made into a detachable switching module which is integrally connected, so that the modular installation is facilitated, the assembly efficiency is improved, and the switching module can be conveniently and additionally arranged on a common gas stove. Of course, in other embodiments, the valve body 11 drive mechanism and the second gear 40 may be provided on the valve body 11.

The invention further provides a gas stove, which comprises a stove body and the plug valve, the specific structure of the plug valve refers to the embodiments, and the gas stove adopts all the technical schemes of all the embodiments, so that the gas stove at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted. Wherein, the plug valve is arranged on the stove body.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A plug valve, comprising:

a valve seat;

the plug valve is provided with a manual mode and an automatic mode, the steering device and the second gear are mutually independent in the manual mode, and the steering device drives the second gear to rotate in the automatic mode;

the second gear is provided with a shifting part, the shifting part is provided with two first abutting surfaces distributed along the circumferential direction of the second gear, and the steering device is slidably mounted on the valve seat and moves along the circumferential direction of the motor by taking the axis of the second gear as a shaft;

the steering device is provided with an abutting piece capable of moving along the axial direction of the second gear, in the manual mode, the abutting piece and the shifting portion are arranged at an interval in the axial direction of the second gear, in the automatic mode, the motor drives the steering device to move along the circumferential direction of the motor, and the abutting piece abuts against one of the first abutting surfaces to drive the second gear to rotate.

2. The plug valve according to claim 1, wherein the steering device includes a slide base and a connecting rod, the slide base is slidably mounted on the valve seat and is located below the second gear, the slide base has a guide portion and a stopper portion, the guide portion extends obliquely in a direction gradually approaching the second gear in a moving direction of the slide base, and the stopper portion is provided at an upper end of the guide portion;

the butt piece is slidably mounted on the guide portion, the butt piece is provided with a second butt surface, one end of the connecting rod is connected with the rotating shaft of the motor, the other end of the connecting rod is located on one side of the second butt surface, when the motor rotates, the connecting rod is in butt joint with the second butt surface to drive the butt piece to slide upwards relative to the guide portion, until the butt piece is in butt joint with the limiting portion, the motor drives the sliding base to move along the circumferential direction of the motor through the connecting rod, and when the butt piece is in butt joint with the first butt surface, the second gear is driven to rotate.

3. The plug valve of claim 2, wherein said guide is a guide ramp.

4. The plug valve of claim 3, wherein said sliding base has two said guiding ramps, said two guiding ramps extend in a direction away from each other, and said stop portion is provided on a side of any one of said guiding ramps away from the other of said guiding ramps.

5. The plug valve of claim 4, wherein said abutment member is provided with a sliding ramp for each of said two guide ramps, and wherein said abutment member slides relative to one of said guide ramps through one of said sliding ramps when said motor is rotated clockwise, and slides relative to the other of said guide ramps through the other of said sliding ramps when said motor is rotated counterclockwise.

6. The plug valve according to claim 5, wherein said abutment member is provided with a mounting hole, said connecting rod is provided in said mounting hole, a dimension of said mounting hole in the axial direction of said second gear is larger than a dimension of said connecting rod, and a wall of said mounting hole is formed with said second abutment surface.

7. A plug valve according to claim 4, wherein said steering means includes two said abutment members, one of said abutment members being slidably mounted on one of said guide ramps and the other of said abutment members being slidably mounted on the other of said guide ramps, the second abutment surfaces of said two abutment members being disposed towards each other, said link being disposed between said second abutment surfaces.

8. The plug valve according to any one of claims 2 to 7, wherein an elastic member is provided between said abutment member and said stopper portion, said elastic member being in a compressed state when said abutment member moves along said guide portion toward said stopper portion.

9. The plug valve of claim 8, wherein a surface of the abutment member facing the limiting portion is provided with a receiving groove, and one end of the elastic member is disposed in the receiving groove.

10. The plug valve of any one of claims 2 to 7, wherein said toggle portion is raised from a lower surface of said second gear.

11. The plug valve of claim 10, wherein said dial portion projects laterally of said second gear, said portion of said dial portion projecting laterally having said first abutment surface.

12. The plug valve of any one of claims 1 to 7, wherein the second gear is provided with a plurality of said striking portions, and the plurality of said striking portions are evenly spaced along the circumference of the second gear.

13. The plug valve of claim 12, further comprising a detection switch fixedly mounted to said valve seat, wherein a plurality of said dials are each operable to activate said detection switch to calculate a rotational angle of said valve stem based on a number of times said detection switch is activated.

14. A plug valve according to any one of claims 1 to 7, wherein said valve seat is provided with guide means disposed around said motor and in the form of a closed loop, said steering means being slidably mounted on said guide means.

15. The plug valve of any one of claims 1 to 7, wherein the valve seat comprises a valve body and a stationary housing, the valve stem is disposed through the stationary housing, the first gear and the driving mechanism are both mounted in the stationary housing, and the stationary housing is detachably connected to the valve body.

16. A gas burner comprising a plug valve according to any one of claims 1 to 15.