CN115654162A - Gear switch for plug valve and plug valve - Google Patents

Abstract

The invention discloses a gear switch for a plug valve and the plug valve with the gear switch, wherein the plug valve comprises a valve body, a valve core and a valve rod, the valve body is provided with an inlet and an outlet, the valve core is arranged in the valve body and can rotate to adjust the opening degree between the inlet and the outlet, the valve rod is connected with the valve core to drive the valve core, and the gear switch comprises: the ignition device comprises a base, a rotating block, a positioning structure and an ignition switch, wherein the base is provided with a containing hole; the rotating block is rotatably arranged in the accommodating hole, and the rotating block is provided with a mounting hole which is used for being matched with the valve rod so that the rotating block can rotate along with the valve rod; the positioning structure is arranged on the base and is configured to position the rotating block; the ignition switch is fixedly connected with the base. Through using above-mentioned technical scheme, can be integrated on gear switch with regulation structure and ignition switch, do benefit to the compact structure nature that improves the plug valve, do benefit to spatial layout.

Description

Gear switch for plug valve and plug valve

Technical Field

The invention relates to the technical field of cookers, in particular to a gear switch for a plug valve and a plug valve with the gear switch.

Background

In the related art, the structure of the gear switch is complex, and the firepower adjustment is unstable, so that the user experience is poor.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a shift switch for a plug valve, which can integrate an adjusting structure and an ignition switch on the shift switch, and is favorable for improving the structural compactness of the plug valve and for spatial arrangement.

Another object of the present invention is to provide a stop cock including the above-mentioned shift switch for the stop cock.

According to the gear switch for the plug valve provided by the embodiment of the invention, the plug valve comprises a valve body, a valve core and a valve rod, wherein the valve body is provided with an inlet and an outlet, the valve core is arranged in the valve body and can rotate to adjust the opening degree between the inlet and the outlet, the valve rod is connected with the valve core to drive the valve core, and the gear switch comprises: the ignition device comprises a base, a rotating block, a positioning structure and an ignition switch, wherein the base is provided with a containing hole; the rotating block is rotatably arranged in the accommodating hole, and the rotating block is provided with a mounting hole which is used for being matched with the valve rod so that the rotating block can rotate along with the valve rod; the positioning structure is arranged on the base and is configured to position the rotating block; the ignition switch is fixedly connected with the base.

According to the gear switch for the plug valve, the rotating block is arranged in the base, and the ignition switch is fixedly connected with the base, so that the adjusting structure and the ignition switch can be integrated on the gear switch, the structural compactness of the plug valve is improved, and the spatial arrangement is facilitated.

In addition, the position switch for the plug valve according to the above embodiment of the present invention may further have the following additional technical features:

in some examples of the present invention, the range switch further comprises: the cover plate covers one end of the base, a matching hole is formed in the cover plate, the periphery of the matching hole covers one part of the accommodating hole, and the matching hole is opposite to the mounting hole; and the other end of the base is provided with a positioning convex part, and the positioning convex part extends into the accommodating hole and is opposite to the cover plate along the thickness direction of the base so as to position the rotating block.

In some examples of the present invention, the cover plate has a plurality of positioning hooks disposed along a circumferential edge thereof, the positioning hooks are spaced apart along a circumferential direction of the cover plate, the base has a plurality of slots disposed along a circumferential direction thereof, the plurality of slots are spaced apart along the circumferential direction of the base, the plurality of positioning hooks respectively correspond to the plurality of slots, and the positioning hooks are embedded in the corresponding slots and are engaged with the base.

In some examples of the invention, the rotating block is provided with a first positioning groove, the first positioning groove extends around the mounting hole, two ends of the first positioning groove are separated by a first stop block, the cover plate is provided with a first positioning part, the first positioning part is embedded in the first positioning groove, and the first positioning part is movable along the first positioning groove and is suitable for being stopped by the first stop block.

In some examples of the present invention, the rotating block is provided with a first positioning flange, and the first positioning flange extends around the mounting hole and is rotatably sleeved inside the matching hole.

In some examples of the present invention, a second positioning flange is disposed on the rotating block, extends around the mounting hole, and is rotatably sleeved on an inner side of the positioning protrusion.

In some examples of the present invention, a plurality of limiting grooves are formed in an outer circumferential surface of the rotating block, the plurality of limiting grooves are arranged at intervals in a circumferential direction of the rotating block, and the positioning structure includes: the ball bearing is embedded into the limiting groove in a withdrawable manner along the radial direction of the rotating block so as to position the rotating block; the first elastic piece is connected with the ball, and the elastic piece has a force which pushes the ball along the radial direction of the rotating block so that the ball is embedded into the limiting groove.

In some examples of the present invention, an abdicating cavity is provided on an inner circumferential surface of the receiving hole, the ball is inserted into the abdicating cavity and at least a portion of the ball protrudes from the inner circumferential surface of the base to be inserted into the limiting groove, and the elastic member is inserted into the abdicating cavity and supported between the ball and the base.

In some examples of the invention, the mounting hole is configured in a non-circular hole shape.

In some examples of the invention, the housing of the ignition switch is integrally formed with the base housing.

In some examples of the invention, the ignition switch is disposed alongside the base.

In some examples of the present invention, a relief hole is provided between the ignition switch and the base, and a trigger of the ignition switch is located on a side of the ignition switch close to the relief hole, and the shift switch further includes: the transmission rod penetrates through the abdicating hole, one end of the transmission rod is used for being connected with the valve rod, and the other end of the transmission rod is opposite to the touch part so as to trigger the ignition switch when the valve rod is pressed down.

A plug valve according to an embodiment of the present invention comprises: the valve comprises a valve body, a valve core, a valve rod and the gear switch for the plug valve, wherein the valve body is provided with an inlet and an outlet; the valve core is arranged in the valve body and can rotate to adjust the opening degree between the inlet and the outlet; the valve rod is connected with the valve core and is connected with the valve core to drive the valve core; the valve rod is connected with the rotating block.

According to the plug valve provided by the embodiment of the invention, the adjusting effect can be improved by applying the gear switch on the plug valve, the structural compactness of the plug valve is favorably improved, and the spatial arrangement is favorably realized.

In some examples of the present invention, the valve body is provided with an accommodating chamber, the valve element is disposed in the accommodating chamber, and the plug valve further includes: the valve seat covers the accommodating cavity and positions the valve core, one end of the valve rod extends into the valve seat and is connected with the valve core, the other end of the valve rod extends out of the valve seat, and the base is stacked on the outer side of the valve seat.

In some examples of the invention, a second positioning groove is formed in the inner side surface of the valve seat, the second positioning groove extends along the circumferential direction of the valve seat, two ends of the second positioning groove are separated by a second stop block, a second positioning portion is arranged at one end, extending into the inner side of the valve seat, of the valve rod, the second positioning portion is embedded into the second positioning groove, and the second positioning portion is movable along the second positioning groove and is suitable for being stopped by the second stop block; the valve rod is movably connected with the valve core along the axial direction, the valve rod and the valve core are positioned along the axial direction, a second elastic part is arranged in the valve body, the second elastic part has a force for pushing the valve rod to extend out of the valve seat, the inner top surface of the second positioning groove is provided with Tong Suocao, and when the valve core cuts off the inlet and the outlet, the second positioning part is embedded into the child lock groove.

Drawings

FIG. 1 is a schematic representation of the construction of a plug valve according to some embodiments of the present invention.

FIG. 2 is a schematic view of a configuration of a range switch in some embodiments of the present invention.

FIG. 3 is a schematic view of the configuration of a range switch in some embodiments of the present invention (wherein the cover plate is not shown).

FIG. 4 is an exploded view of a range switch in some embodiments of the present invention.

FIG. 5 is a schematic view of a rotating block in some embodiments of the invention.

Fig. 6 is a schematic diagram of a cover plate according to some embodiments of the invention.

Fig. 7 is a schematic view of the structure of a valve body in some embodiments of the invention.

FIG. 8 is a schematic illustration of the construction of a valve stem in some embodiments of the invention.

FIG. 9 is a schematic illustration of a valve seat structure according to some embodiments of the invention.

Reference numerals:

100. a plug valve; 2. a valve body; 20. an accommodating cavity; 3. a valve core; 4. a valve stem; 201. a first air outlet channel; 202. a second air outlet channel; 203. an inlet; 204. an outlet; 1. a gear switch; 11. a base; 101. a housing hole; 12. rotating the block; 102. mounting holes; 13. a positioning structure; 131. a ball bearing; 132. a first elastic member; 14. an ignition switch; 15. a cover plate; 151. a first positioning portion; 103. a mating hole; 111. a positioning projection; 152. positioning a clamping hook; 104. a card slot; 105. a first positioning groove; 121. a first stopper block; 123. a first locating flange; 106. a limiting groove; 107. a yielding cavity; 108. a hole of abdication; 16. a transmission rod; 5. a valve seat; 50. a second positioning groove; 51. a second stop block; 41. a second positioning portion; 501. tong Suocao; 6. a deflector rod; 7. a bottom cover; 8. an electromagnetic valve; 9. a gasket; 10. and (5) fine adjustment of screws.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1 to 9, according to the inhibitor switch 1 for a plug valve of the embodiment of the present invention, the plug valve 100 includes a valve body 2, a valve core 3 and a valve rod 4, the valve body 2 is provided with an inlet 203 and an outlet 204, the valve core 3 is disposed in the valve body 2 and is rotatable to adjust an opening degree between the inlet 203 and the outlet 204, and the valve rod 4 is connected to the valve core 3 to drive the valve core 3, so that the valve core 3 can rotate in the valve body 2 to be suitable for adjusting a flow output.

Further, the inhibitor switch 1 includes: the valve rod positioning device comprises a base 11, a rotating block 12 and a positioning structure 13, wherein a containing hole 101 is formed in the base 11, the rotating block 12 is rotatably arranged in the containing hole 101, and a mounting hole 102 used for being matched with the valve rod 4 to enable the rotating block 12 to rotate along with the valve rod 4 is formed in the rotating block 12. That is, the rotary block 12 may be installed in the base 11, and the rotary block 12 is provided with an installation hole 102, and the valve rod 4 is engaged with the installation hole 102, so that the valve rod 4 and the rotary block 12 may be connected, and when the user rotates the valve rod 4, the rotary block 12 may rotate in the base 11. The positioning structure 13 is arranged on the base 11 and is configured to be suitable for positioning the rotating block 12, so that the stability of the rotating block 12 during rotation can be improved, and after the rotating block 12 rotates, the positioning structure 13 can also keep the rotating block 12 in a stable state, thereby being beneficial to improving the adjusting effect. Specifically, when the user rotates the valve rod 4 to drive the valve core 3 to rotate, and the valve core 3 rotates to different positions or angles, the opening degree between the inlet 203 and the outlet 204 can be changed, so that the fire power adjustment is realized.

In the process that the valve plug 3 is driven by the valve rod 4 to rotate, the rotating block 12 can rotate in cooperation with the valve rod 4, and the positioning structure 13 is suitable for positioning the position of the rotating block 12, so that when the rotating block 12 rotates, the positioning structure 13 can play a role in limiting and positioning, a user can conveniently rotate the valve plug 3 to a preset or target position and keep the valve plug at the preset or target position, and the adjusting effect can be improved. In addition, the rotating block 12 and the positioning structure 13 are both arranged in the base 11, which is beneficial to improving the compactness of the arrangement of the gear switch 1. Further, the gear switch 1 further comprises an ignition switch 14, the ignition switch 14 is fixedly connected with the base 11, the distance between the ignition switch 14 and the valve rod 4 can be shortened, space arrangement is facilitated, the number of parts can be reduced during assembly, and assembly difficulty is reduced.

According to the gear switch 1 for the plug valve, the rotating block 12 is arranged in the base 11, and the ignition switch 14 is fixedly connected with the base 11, so that the adjusting structure and the ignition switch 14 can be integrated on the gear switch 1, the structural compactness of the plug valve 100 is improved, and the spatial arrangement is facilitated.

With reference to fig. 1 and 4, in some embodiments of the invention, the inhibitor switch 1 further comprises: the cover plate 15 covers one end of the base 11, the cover plate 15 is provided with a matching hole 103, the periphery of the matching hole 103 covers one part of the accommodating hole 101, and the matching hole 103 is opposite to the mounting hole 102, so that the cover plate 15 can cover one part of the rotating block 12, the rotating block 12 and the positioning structure 13 can be limited in the base 11, the structural stability of the base 11 after installation is improved, and the valve rod 4 can penetrate out of the matching hole 103 after being matched with the mounting hole 102. More specifically, the other end of the base 11 is provided with a positioning convex portion 111, the positioning convex portion 111 extends into the accommodating hole 101 and is opposite to the cover plate 15 along the thickness direction of the base 11 to position the rotating block 12, so that the limiting and positioning effects of the base 11 on the rotating block 12 can be improved, therefore, the cover plate 15 and the base 11 can play a role in positioning and limiting the end portions of the two sides of the rotating block 12, the rotating block 12 can be positioned between one end and the other end of the base 11, and the stability of the structure is improved.

With reference to fig. 6, further, in some embodiments of the present invention, a plurality of positioning hooks 152 are disposed on a circumferential edge of the cover plate 15, the plurality of positioning hooks 152 are disposed at intervals along a circumferential direction of the cover plate 15, a plurality of slots 104 are disposed on an outer circumferential surface of the base 11, the plurality of slots 104 are disposed at intervals along the circumferential direction of the base 11, the plurality of positioning hooks 152 correspond to the plurality of slots 104, and the positioning hooks 152 are embedded into the corresponding slots 104 and are in snap fit with the base 11, so that stability of connection between the cover plate 15 and the base 11 can be improved, and the structure is simple and easy to assemble. Specifically, the cover plate 15 can cover the end of the base 11, and the plurality of positioning hooks 152 on the periphery of the cover plate 15 can realize the connection between the cover plate 15 and the periphery of the base 11, so as to improve the stability of the connection between the cover plate 15 and the base 11, and improve the overall structural strength of the shift switch 1. In other words, the positioning hooks 152 are embedded into the slots 104 and are in snap fit with the base 11, so that the cover plate 15 is prevented from shaking along the circumferential direction, the structural stability is improved, and the smoothness of the circumferential surface of the base can be improved.

According to the position switch 1 of one embodiment of the present invention, the positioning hook 152 may include a plate portion and a hook portion, the plate portion and the hook portion are connected to form an "L" shape, the plate portion is suitable for being embedded into the slot 104, and the hook portion is suitable for being abutted against the end of the base 11, so that the cover plate 15 may be matched with multiple surfaces of the base 11 by the positioning hook 152, which is beneficial to improving the structural stability. In addition, the positioning hook 152 is favorable for improving the stability of matching after being installed, does not increase the thickness of the outer peripheral surface of the base 11, and is favorable for spatial arrangement.

With reference to fig. 5 and 6, in some embodiments of the present invention, the rotating block 12 is provided with a first positioning groove 105, the first positioning groove 105 extends around the mounting hole 102, two ends of the first positioning groove 105 are separated by a first stopping block 121, the cover plate 15 is provided with a first positioning portion 151, the first positioning portion 151 is embedded in the first positioning groove 105, and the first positioning portion 151 is movable along the first positioning groove 105 and is adapted to be stopped by the first stopping block 121, so as to construct a limit position for limiting the rotation of the rotating block 12, so as to limit the rotation range of the rotating block 12. Specifically, after the cover plate 15 is assembled, the first positioning portion 151 is disposed opposite to the first positioning groove 105, the first positioning portion 151 movably extends into the first positioning groove 105, when the rotating block 12 rotates in the accommodating hole 101, the first stopping block 121 rotates along the circumferential direction, and the first stopping block 121 interferes with the first positioning portion 151 to limit the rotating block 12 to continue rotating.

Referring to fig. 2, in some embodiments of the present invention, the first positioning flange 123 is disposed on the rotating block 12, and the first positioning flange 123 extends around the mounting hole 102 and is rotatably sleeved inside the matching hole 103, so as to improve the assembly stability, and particularly, when the rotating block 12 rotates, the first positioning flange 123 is sleeved inside the matching hole 103, so as to prevent the rotating block 12 from shaking along the circumferential direction, which is beneficial to improving the operation effect.

In some embodiments of the present invention, a second positioning flange (not shown in the figures) is disposed on the rotating block 12, and the second positioning flange extends around the mounting hole 102 and is rotatably sleeved on the inner side of the positioning protrusion 111, so as to improve the stability of the assembly, prevent the rotating block 12 from shaking in the circumferential direction, and facilitate improvement of the operation effect.

With reference to fig. 4 and 5, in some embodiments of the present invention, a plurality of limiting grooves 106 are disposed on the outer circumferential surface of the rotating block 12, the plurality of limiting grooves 106 are spaced along the circumferential direction of the rotating block 12, and the positioning structure 13 includes: a ball 131 and a first elastic member 132, the ball 131 being retractably inserted into the stopper groove 106 in a radial direction of the rotating block 12 to position the rotating block 12; the first elastic member 132 is connected to the ball 131, and has a force of pushing the ball 131 in a radial direction of the rotating block 12 so that the ball 131 is inserted into the stopper groove 106. That is to say, the positioning structure 13 positions the rotation block 12 along the circumferential direction, during adjustment, the force of the rotation block 12 overcomes the elastic force of the first elastic member 132, the ball 131 is driven to be disengaged from the limit groove 106, when the rotation block 12 rotates along the circumferential direction, the ball 131 can be inserted into another limit groove 106 again, the first elastic member 132 can push the ball 131 into the limit groove 106, and the stable state of the ball 131 in the limit groove 106 is maintained, thereby improving the stability of adjustment. Therefore, when the valve rod 4 adjusts the rotation angle of the valve core 3, the rotation part in the gear switch 1 is matched with the positioning structure 13, a plurality of adjusting positions can be constructed, and when a user adjusts, the ball 131 is separated from the first limiting groove 106 and embedded into the other limiting groove 106, so that certain resistance is provided, a damping hand feeling is formed, the user can conveniently judge the adjusting effect, the valve rod 4 can be quickly and accurately positioned on a target position by the user, and the stability of adjustment can be kept.

When the gear switch 1 is applied to the plug valve 100 of the gas stove, the handle is obviously limited in the adjusting process, the positions of the limiting grooves 106 can correspond to the rotating positions of the valve core 3, different flow outputs exist, and the purpose of quickly and accurately finding the position of required firepower can be achieved.

That is to say, in the base 11, the rotating block 12, the ball 131 and the first elastic member 132 construct a limiting structure on the position switch 1, which is beneficial to improving the accuracy of user adjustment and providing convenience for user operation.

Referring to fig. 3, in some embodiments of the present invention, the receiving hole 101 is provided with a relief cavity 107 on an inner circumferential surface thereof, the ball 131 is inserted into the relief cavity 107 and at least partially protrudes from the inner circumferential surface of the base 11 to be inserted into the limiting groove 106, and the elastic member is inserted into the relief cavity 107 and supported between the ball 131 and the base 11.

In some embodiments of the present invention, the mounting hole 102 is configured as a non-circular hole and is adapted to cooperate with the valve stem 4 such that the valve stem 4 can rotate the rotary block 12 synchronously. Specifically, at least a portion of the valve stem 4 has a non-circular stem portion adapted to pass through the non-circular mounting hole 102 to improve the stability of the valve stem 4 driving the rotation block 12. Wherein, the mounting hole 102 and the rod portion may be in a "D" shape.

Referring to fig. 5, in some embodiments of the present invention, the housing of the ignition switch 14 is integrally formed with the base 11, which facilitates manufacturing and assembly, reduces assembly difficulty, improves assembly efficiency, and facilitates saving assembly space.

In some embodiments of the present invention, the ignition switch 14 is located alongside the base 11 to improve compactness and, in addition, to facilitate space when the inhibitor switch 1 is applied to the plug valve 100.

Referring to fig. 3, in some embodiments of the present invention, a relief hole 108 is disposed between the ignition switch 14 and the base 11, a touch portion of the ignition switch 14 is located on a side of the ignition switch 14 close to the relief hole 108, and the inhibitor switch 1 further includes: and a transmission rod 16, wherein the transmission rod 16 penetrates through the offset hole 108, one end of the transmission rod 16 is used for connecting the valve rod 4, and the other end of the transmission rod 16 is opposite to the touch part so as to trigger the ignition switch 14 when the valve rod 4 is pressed down. In other words, the transmission rod 16 is connected between the valve stem 4 and the trigger of the ignition switch 14, and the transmission rod 16 can transmit the power of the valve stem 4 to the trigger to trigger the ignition switch 14 by pressing down the valve stem 4. The abdicating hole 108 can be used for installing the transmission rod 16, and the abdicating hole 108 is arranged at one side close to the touching part, which is beneficial to shortening the distance between the transmission rod 16 and the touching part and improving the structure compactness. More specifically, one end of the transmission rod 16 is further provided with a support portion, and the support portion is configured into a U-shaped structure with one side open, wherein the open end faces the valve rod 4, so as to be suitable for supporting or clamping the valve rod 4, thereby improving the transmission effect and the stability of operation.

Referring to fig. 1 and 7, a plug valve 100 according to an embodiment of the present invention includes: valve body 2, case 3, valve rod 4 and aforesaid gear switch 1 for plug valve, valve body 2 have import 203 and export 204, and case 3 locates in valve body 2 to rotationally with adjusting the aperture between import 203 and the export 204, valve rod 4 links to each other with case 3, and valve rod 4 links to each other with case 3 in order to drive case 3, and valve rod 4 links to each other with turning block 12. According to the plug valve 100 of the embodiment of the invention, the position switch 1 is applied to the plug valve 100, so that the adjusting effect can be improved, the structural compactness of the plug valve 100 can be improved, and the spatial arrangement is facilitated.

Referring to fig. 7, in some embodiments of the present invention, the valve body 2 is provided with a receiving cavity 20, the valve core 3 is disposed in the receiving cavity 20, and the plug valve 100 further includes: the valve seat 5, valve seat 5 closing cap holding chamber 20 and location case 3, the one end of valve rod 4 stretches into valve seat 5 and links to each other with case 3, and the other end stretches out valve seat 5, and wherein, base 11 stacks up in the outside of valve seat 5, does benefit to the spatial arrangement, improves compact structure nature.

With reference to fig. 9, in some embodiments of the present invention, a second positioning groove 50 is disposed on the inner side surface of the valve seat 5, the second positioning groove 50 extends along the circumferential direction of the valve seat 5, two ends of the second positioning groove 50 are separated by a second stop block 51, one end of the valve rod 4 extending into the inner side of the valve seat 5 is provided with a second positioning portion 41, the second positioning portion 41 is embedded in the second positioning groove 50, and the second positioning portion 41 is movable along the second positioning groove 50 and is adapted to be stopped by the second stop block 51; the valve rod 4 is movably connected with the valve core 3 along the axial direction, the valve rod 4 and the valve core 3 are positioned along the axial direction, a second elastic part is arranged in the valve body 2, the second elastic part has a force for pushing the valve rod 4 to extend out of the valve seat 5, the inner top surface of the second positioning groove 50 is provided with Tong Suocao, and when the valve core 3 cuts off the inlet 203 and the outlet 204, the second positioning part 41 is embedded into Tong Suocao so as to limit the rotation of the second positioning part 41 and avoid mistaken touch. Wherein, one side upper edge of the child lock groove 501 is connected with the lower edge of the second stopping block 51, so that the second stopping block 51 can limit the rotation of the second positioning portion 41, the second positioning portion 41 can be separated from the child lock groove 501 only by rotating according to the predetermined direction, the use safety can be improved, and the false touch can be avoided.

In particular, the second positioning slot 50 can define a range of adjustment within the valve seat 5, and the second stop block 51 can define extreme positions at the end of the second positioning slot 50, for example defining a maximum value and a minimum value of adjustment. During adjustment, the second positioning portion 41 protruding from the bottom of the valve rod 4 is inserted into Tong Suocao to form a child lock, the valve rod 4 is pressed downward and the valve rod 4 is rotated in a predetermined direction, so that the second positioning portion 41 is disengaged from the child lock groove 501 to be unlocked, and thus the second positioning portion 41 can move in the second positioning groove 50 until being stopped by the second stop block 51, that is, when the opening degree between the inlet 203 and the outlet 204 needs to be adjusted to be maximum or minimum, the valve rod 4 can be directly rotated to a limit position, and the second stop block 51 can provide limit feedback for a user, thereby providing convenience for the user.

A plug valve 100 and a inhibitor switch 1 according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a stopcock valve 100 according to some embodiments of the invention comprises: the valve comprises a valve body 2, a valve core 3, a valve seat 5, a valve rod 4, a deflector rod 6, a sealing gasket 9, a bottom cover 7, an electromagnetic valve 8, a locking nut, a valve needle spring, a flat gasket, a valve needle sealing ring, a fine adjustment screw 10, a screw sealing ring and a gear switch 1, wherein the gear switch 1 comprises a gear limiting structure and an ignition switch 14 which triggers an ignition signal along with the pressing action of the valve rod 4.

Referring to fig. 9, the second stopper 51 of the valve seat 5 can prevent the valve rod 4 from rotating in the opposite direction, the second positioning portion 41 at the bottom of the valve rod 4 is clamped in the child lock groove 501 of the valve seat 5 to form a child lock when the plug valve 100 is in the initial position, the valve rod 4 can rotate in a specified direction only after being pressed down, the second positioning portion 41 is aligned with the clamping groove 104 of the valve element 3, the rotatable valve rod 4 drives the valve element 3 to rotate by the second positioning portion 41 at the bottom after the child lock is released by pressing down the valve rod 4, the rotating block 12 of the shift switch 1 can rotate synchronously with the valve rod 4, the shift switch 1 is fixed on the valve seat 5 and can be fixed by bolts or buckles.

Further, with reference to fig. 3 and 6, the plurality of limiting grooves 106 on the outer peripheral surface of the rotating block 12 form an uneven matching surface on the outer peripheral surface of the rotating block 12, in the process that the rotating block 12 rotates along with the valve rod 4, the balls 131 are respectively in contact with the matching surface and the first elastic member 132, the balls 131 move on the matching surface under the action of elastic force of the first elastic member 132, the rotating torque of the rotating block 12 is different, a damping hand feeling in the rotation of the valve rod 4 is formed, the height difference of the matching surface forms a structural shape similar to a peak and a trough, the balls 131 are at a limiting position when the trough position between two peaks is located, and the gear switch 1 is provided with a plurality of limiting positions. For example, in the embodiment, the initial 0 ° position is a limit position, and a plurality of limit positions are arranged between the maximum fire position and the minimum fire position, and the cover 15 can limit the rotating block 12, the first elastic member 132, and the balls 131 in the base 11.

Alternatively, the matching surface may be disposed on the base 11, the ball 131 may be replaced by a structure that slides or rolls with the matching surface, the first elastic member 132 may be a spring, or may be replaced by an elastic member that generates elastic force variation according to the amount of deformation, and the elastic member may be disposed on the rotating block 12 to form a gear position limiting structure with a consistent action principle.

Further, a second positioning groove 50 is formed in the valve seat 5, a second stop block 51 is formed in the second positioning groove 50, a second positioning portion 41 is formed in the valve rod 4, and in the rotating process of the valve rod 4, the second positioning portion 41 of the valve rod 4 rotates to the second stop block 51 of the valve seat 5, and is a limit rotating position, which is a minimum flow output position. Alternatively, the first positioning groove 105 may be formed in the rotating block 12, the first stopper 121 may be formed in the first positioning groove 105, and the first positioning portion 151 of the cover plate 15 may limit the limit position of the rotation of the rotating block 12, wherein only one of the limit position of the stop on the valve seat 5 and the limit position of the stop on the inhibitor switch 1 may be provided.

Furthermore, the valve body 2 comprises an inlet 203, an outlet 204, an electromagnetic valve accommodating cavity, an accommodating cavity, a first air outlet channel 201, a second air outlet channel 202 and a flow regulating cavity, fuel gas enters the electromagnetic valve accommodating cavity from the inlet 203, the electromagnetic valve 8 is in contact seal with the electromagnetic valve accommodating cavity in an initial state, the shifting lever 6 is pushed to rotate along with the valve rod 4 through the valve needle, the electromagnetic valve 8 is pushed by the shifting lever 6, the fuel gas enters a cavity formed by the bottom cover 7 and the valve body 2, and the bottom cover 7 and the valve body 2 are sealed by the sealing gasket 9.

The valve core 3 is placed in the containing cavity 20 of the valve body 2, taper oil coating sealing is adopted between the valve body 2 and the valve core 3, fuel gas enters the air inlet cavity of the valve core 3 in the cavity of the bottom cover 7, the fuel gas is output from the outlet 204 after the air outlet hole of the valve core 3 is communicated with the air outlet channel of the valve body 2, the fine adjustment screw 10 is installed in the flow adjusting cavity on the valve body 2, and the maximum flow output by the second air outlet channel 202 can be controlled by screwing the adjusting screw into the depth.

When the valve core 3 is used, the air outlet hole of the valve core 3 is firstly communicated with the first air outlet channel 201 of the valve body 2 in the rotation process of the valve core 3, the air channel throttling area is maximum when the angle reaches 90 degrees, and the flow is maximum; in the process of adjusting the valve core 3 to the minimum flow position (270 degrees), an air passage formed by the air outlet hole of the valve core 3 and the first air outlet channel 201 of the valve body 2 is gradually replaced by an air passage formed by the adjusting groove and the first air outlet channel 201 of the valve body 2, the throttling area is reduced, and the flow is reduced; the adjusting groove is composed of a groove communicated with the valve core 3 air inlet cavity and two communicated blind grooves with different heights and depths, only part of the adjusting groove is communicated with the first air outlet channel 201 of the valve body 2 in the adjusting process, and the air outlet hole of the valve core 3 is not communicated with the second air outlet channel 202 of the valve body 2 in the adjusting process; in the process that the throttling area of the air passage formed by the air outlet hole of the valve core 3 and the first air outlet channel 201 of the valve body 2 is reduced, the adjusting groove is gradually communicated with the second air outlet channel 202 of the valve body 2, and the flow control performance is improved.

In this embodiment, the gear switch 1 sets a limit position at 0 °, 9 limit positions are uniformly set between 90 ° of the maximum fire position and 270 ° of the minimum fire position, each limit position corresponds to a different rotation angle position of the valve rod 4, the valve rod 4 drives the valve core 3 to rotate at a different angle, the valve core 3 matched with the valve rod 4 is different in rotation position, and the fire output is different, so that the flow output is accurately adjusted.

In the description of the present invention, it is to be understood that the terms "thickness," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (12)

1. The utility model provides a gear switch for plug valve, the plug valve includes valve body, case and valve rod, be equipped with import and export on the valve body, the case is located in the valve body and rotationally in order to adjust import with aperture between the export, the valve rod with the case links to each other in order to drive the case, its characterized in that, gear switch includes:

the base is provided with a containing hole;

the rotating block is rotatably arranged in the accommodating hole and is provided with a mounting hole which is used for being matched with the valve rod so that the rotating block can rotate along with the valve rod;

the positioning structure is arranged on the base and is configured to position the rotating block;

and the ignition switch is fixedly connected with the base.

2. The inhibitor switch for a stopcock of claim 1, further comprising:

the cover plate covers one end of the base, a matching hole is formed in the cover plate, the periphery of the matching hole covers one part of the accommodating hole, and the matching hole is opposite to the mounting hole;

the other end of the base is provided with a positioning convex part, and the positioning convex part extends into the accommodating hole and is opposite to the cover plate along the thickness direction of the base so as to position the rotating block.

3. A position switch for a plug valve according to claim 2, wherein the cover plate is provided with a plurality of positioning hooks along the circumferential direction of the cover plate, the positioning hooks are arranged along the circumferential direction of the cover plate at intervals, the outer circumferential surface of the base is provided with a plurality of slots, the slots are arranged along the circumferential direction of the base at intervals, the positioning hooks are respectively corresponding to the slots, and the positioning hooks are embedded into the corresponding slots and are in snap fit with the base.

4. The inhibitor switch of claim 2, wherein said rotary block defines a first slot extending around said mounting hole and separated at two ends by a first stop,

the cover plate is provided with a first positioning part, the first positioning part is embedded into the first positioning groove, and the first positioning part is movable along the first positioning groove and suitable for being stopped by the first stopping block.

5. The position switch for the plug valve according to claim 2, wherein the rotating block is provided with a first positioning flange, the first positioning flange extends around the mounting hole and is rotatably sleeved on the inner side of the matching hole;

and/or a second positioning flange is arranged on the rotating block, extends around the mounting hole and is rotatably sleeved on the inner side of the positioning convex part.

6. The inhibitor switch for a plug valve according to claim 1, wherein a plurality of limiting grooves are formed in an outer peripheral surface of the rotary block, the plurality of limiting grooves are arranged along a circumferential direction of the rotary block at intervals, and the positioning structure comprises:

the ball is embedded into the limiting groove in a withdrawable manner along the radial direction of the rotating block so as to position the rotating block;

the first elastic piece is connected with the ball, and the elastic piece has a force which pushes the ball along the radial direction of the rotating block so that the ball is embedded into the limiting groove.

7. A range switch for plug valve according to claim 6, wherein the inner peripheral surface of said receiving hole is provided with a yielding cavity, said ball is embedded into said yielding cavity and at least a part of said yielding cavity protrudes from the inner peripheral surface of said base to be embedded into said limiting groove, said elastic member is embedded into said yielding cavity and supported between said ball and said base.

8. The inhibitor switch for a stopcock of claim 1, wherein said mounting hole is configured as a non-circular hole;

and/or the shell of the ignition switch and the base frame are integrally formed;

and/or the ignition switch is arranged side by side with the base.

9. The inhibitor switch of claim 1, wherein a relief hole is provided between the ignition switch and the base, the trigger of the ignition switch is located on a side of the ignition switch close to the relief hole, the inhibitor switch further comprises:

the transmission rod penetrates through the abdicating hole, one end of the transmission rod is used for being connected with the valve rod, and the other end of the transmission rod is opposite to the touch part so as to trigger the ignition switch when the valve rod is pressed down.

10. A plug valve, comprising:

a valve body having an inlet and an outlet;

the valve core is arranged in the valve body and can rotate to adjust the opening degree between the inlet and the outlet;

the valve rod is connected with the valve core and is connected with the valve core to drive the valve core;

the inhibitor switch for a stopcock according to any one of claims 1 to 9, wherein said valve stem is connected to said turning block.

11. The plug valve of claim 10, wherein the valve body is provided with a receiving cavity, the valve core is arranged in the receiving cavity, and the plug valve further comprises:

the valve seat covers the accommodating cavity and positions the valve core, one end of the valve rod extends into the valve seat and is connected with the valve core, the other end of the valve rod extends out of the valve seat,

wherein the base is laminated on an outer side of the valve seat.

12. The plug valve of claim 11,

a second positioning groove is formed in the inner side face of the valve seat, the second positioning groove extends along the circumferential direction of the valve seat, two ends of the second positioning groove are separated by a second stop block, a second positioning portion is arranged at one end, extending into the inner side of the valve seat, of the valve rod, the second positioning portion is embedded into the second positioning groove, and the second positioning portion can move along the second positioning groove and is suitable for being stopped by the second stop block;

the valve rod is movably connected with the valve core along the axial direction, the valve rod and the valve core are positioned along the axial direction, a second elastic part is arranged in the valve body, the second elastic part has a force for pushing the valve rod to extend out of the valve seat, the inner top surface of the second positioning groove is provided with Tong Suocao, and when the valve core cuts off the inlet and the outlet, the second positioning part is embedded into the child lock groove.

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