CN110953364A

CN110953364A - Plug valve

Info

Publication number: CN110953364A
Application number: CN201911328456.XA
Authority: CN
Inventors: 徐宏远; 刘雁云
Original assignee: Zhejiang Bodun Gas Appliance Technology Co ltd
Current assignee: Zhejiang Bodun Gas Appliance Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-04-03
Anticipated expiration: 2039-12-20
Also published as: CN110953364B

Abstract

The invention provides a plug valve, and relates to the technical field of gas stove accessories. The plug valve includes: the valve body is provided with an air inlet channel, a main fire channel and a secondary fire channel; the case, it is installed in the valve body, and the case is the valve body rotation relatively, runs through on the case and sets up the valve chamber, is provided with the blow vent of blocking with the valve chamber on the case periphery wall, the blow vent includes: the fire-fighting gas inlet comprises a gas inlet communicated with a gas inlet channel, a main fire gas outlet hole communicated with a main fire channel and a secondary fire gas outlet hole communicated with a secondary fire channel; the peripheral wall of the valve core is also provided with an air guide groove blocked with the valve cavity; the air inlet, the main fire air outlet hole and the secondary fire air outlet hole are respectively communicated with the air guide groove. Through the arrangement, the gas is evenly divided under the guiding action of the gas guide grooves, so that the gas flow in the main fire channel is the same as that in the secondary fire channel. Because the air inlet, the main fire air outlet hole, the secondary fire air outlet hole and the air guide groove are blocked with the valve cavity, the problem that fuel gas flows in from the bottom of the valve cavity can be avoided, and the safety is improved.

Description

Plug valve

Technical Field

The invention belongs to the technical field of gas stove accessories and relates to a plug valve.

Background

The plug valve of gas stove is the core part of household gas stove, and the existing mechanical gas stove is ignited, fire power is regulated and flameout is carried out through the plug valve.

Domestic gas cooking utensils generally have interior ring fire and outer ring fire, ordinary binary channels gas valve generally has inlet channel including inside, main fire outlet channel and time fire outlet channel's valve body, be equipped with the case that can rotate in the valve body, case upper portion has the spring chamber, the case lower part is equipped with the chamber of ventilating, wear to be equipped with on the valve body and to drive the rotatory valve rod of case, the lower extreme top of valve rod is held to make the valve rod keep shifting up and break away from the spring of being connected the trend with the case, this spring is located the spring intracavity on the case, it has the main fire venthole that is used for communicateing inlet channel and main fire outlet channel to open on the chamber lateral wall of ventilating of case, and be used for communicateing inlet channel and the time fire venthole of giving.

The fire regulation of the main fire and the secondary fire is realized through the rotation of the valve core, the flow rate does not change linearly in the rotation process of the valve core in the prior art, and particularly in the transition stage from big fire to small fire, the flow rate changes do not decrease linearly and in a specific row, so that the unbalanced and nonlinear characteristics can be presented. The actual user feels that the fire power changes suddenly in the process of switching between big fire and small fire when the fire power is used, or the fire power does not change, and the fire power suddenly changes when the fire power is changed to small fire. The defects of unstable adjustment and easy flameout exist in the process of adjusting the big fire and the small fire, and inconvenience is brought to practical use.

In addition, because the side wall of the vent cavity of the valve core is provided with the main fire vent hole and the secondary fire vent hole, in order to prevent air from entering from the bottom of the valve core, a plurality of sealing structures need to be arranged inside the valve core, such as an ultra-thin synchronous plug valve structure disclosed in CN 109578622A. However, the sealing structure is susceptible to aging, and therefore, the safety is poor. The problems easily caused by air intake from the bottom of the valve core are as follows: 1. the gas flow flowing to the main fire air outlet hole and the secondary fire air outlet hole is not uniform, so that the main fire and the secondary fire cannot be adjusted simultaneously; 2. the safety is poor, and the fire is not controlled.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a plug valve which has the advantages that the gas flow of a main fire air outlet hole and a secondary fire air outlet hole can be changed simultaneously, and air cannot enter the bottom of a valve core.

The purpose of the invention can be realized by the following technical scheme: a plug valve, comprising:

the valve body is provided with an air inlet channel, a main fire channel and a secondary fire channel;

the case, it is installed in the valve body, and the case is the valve body rotation relatively, runs through on the case and sets up the valve chamber, is provided with the blow vent of blocking with the valve chamber on the case periphery wall, the blow vent includes: the fire-fighting gas inlet comprises a gas inlet communicated with a gas inlet channel, a main fire gas outlet hole communicated with a main fire channel and a secondary fire gas outlet hole communicated with a secondary fire channel; the peripheral wall of the valve core is also provided with an air guide groove blocked with the valve cavity; the air inlet, the main fire air outlet hole and the secondary fire air outlet hole are respectively communicated with the air guide groove.

As a further improvement of the invention, the air inlet valve further comprises an electromagnetic valve, wherein the electromagnetic valve is inserted in the valve body and can move relative to the valve body to control the on-off condition of the air inlet channel.

As a further improvement of the invention, the air inlet channel is provided with a corner, and the electromagnetic valve is inserted at the corner of the air inlet channel.

As a further improvement of the invention, the valve further comprises a flow regulating nail and a flow regulating channel, wherein the flow regulating nail is embedded in the valve body, one end of the flow regulating channel is connected with the valve core, and the other end of the flow regulating channel is connected with the secondary fire channel through the flow regulating nail.

As a further improvement of the invention, the valve cavity is internally and penetratingly provided with the valve needle, the inner wall of the valve cavity extends inwards in the circumferential direction to form a first boss, and the valve cavity is divided into a spring cavity positioned at the upper part and a vent cavity positioned at the lower part.

As a further improvement of the invention, a spring is sleeved between the valve needle and the first boss in the spring cavity.

As a further improvement of the invention, the valve sleeve and the sealing ring are arranged on one side of the first boss facing the spring cavity.

As a further improvement of the invention, the valve also comprises a knob rod which is inserted from the upper part of the valve body and is connected with the valve needle.

As a further improvement of the invention, the electromagnetic valve further comprises a bottom cover which seals the valve body from the bottom of the valve body, a rotatable lever is arranged in the bottom cover, and a shifting sheet which can be abutted against the valve needle and an arm which can push the electromagnetic valve are arranged on the lever.

Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects: the valve core is provided with an air inlet communicated with an air inlet channel, a main fire air outlet communicated with a main fire channel and a secondary fire air outlet communicated with a secondary fire channel, the air inlet, the main fire air outlet and the secondary fire air outlet are respectively communicated with the air guide groove creatively, and the components are blocked with the valve cavity. Through the setting, when the gas entered from inlet channel, through the guide effect in air guide groove, the gas was shunted on average, and the gas flow direction is main fire venthole and time fire venthole, and consequently main fire passageway is the same with the gas flow in the time fire passageway, realizes main fire and time fire grow simultaneously or diminish. In addition, because the air inlet, the main fire vent hole, the secondary fire vent hole and the air guide groove are all blocked with the valve cavity, compared with the prior art, the problem that fuel gas flows in from the bottom of the valve cavity can not occur, and the safety is improved.

Drawings

Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic view of the overall construction of the plug valve of the present invention.

FIG. 2 is a structural cross-sectional view of the plug valve.

Fig. 3 is a schematic view of the valve cartridge.

Fig. 4 is a schematic view of the valve core from another view angle.

FIG. 5 is a schematic view of another aspect of the plug valve.

FIG. 6 is a schematic view of another aspect of the plug valve.

FIG. 7 is an exploded view of the plug valve.

Fig. 8 is a structural sectional view of the solenoid valve.

FIG. 9 is a structural cross-sectional view of another section of the plug valve.

FIG. 10 is a structural cross-sectional view of another section of the plug valve.

FIG. 11 is a schematic view of another alternate aspect of the plug valve.

In the figure, 100, valve body; 110. an air intake passage; 120. a main fire channel; 130. a secondary fire channel; 200. a valve core; 211. an air inlet; 212. a main fire air outlet hole; 213. secondary fire air outlet holes; 214. a gas guide groove; 215. a groove; 221. a first boss; 222. a spring cavity; 223. a vent lumen; 231. a valve needle; 232. a valve housing; 233. an electromagnetic valve; 234. a first gas port; 235. a second gas port; 300. a knob stem; 310. a fixed mount; 320. pressing a plate; 330. a microswitch; 340. a nose bar; 400. a flow regulating pin; 410. an adjustment end; 420. a first through hole; 430. a second through hole; 440. a flow regulating channel; 500. a bottom cover; 510. a lever; 511. a shifting sheet; 512. an arm portion.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 11.

A plug valve, as shown in fig. 1-11, comprising: the valve comprises a valve body 100, a valve core 200, an electromagnetic valve 233, a knob rod 300, a flow regulating nail 400 and a bottom cover 500.

The valve body 100 is provided with an intake passage 110, a main fire passage 120, and a sub fire passage 130. Specifically, the main fire passage 120 and the sub fire passage 130 are disposed in parallel on the same side of the valve body 100, and the intake passage 110 is disposed on the other side of the valve body 100. In the present embodiment, the intake passage 110 is oriented horizontally, and the knob lever 300 is oriented vertically.

The valve core 200 is installed in the valve body 100, the valve core 200 can rotate relative to the valve body 100, the valve cavity is arranged on the valve core 200 in a penetrating mode, the peripheral wall of the valve core 200 is provided with air vents blocked by the valve cavity, and the air vents comprise: an air inlet 211 communicating with the air inlet passage 110, a main fire outlet hole 212 communicating with the main fire passage 120, and a sub fire outlet hole 213 communicating with the sub fire passage 130; the peripheral wall of the valve core 200 is also provided with an air guide groove 214 blocked with the valve cavity; the air inlet 211, the main fire outlet hole 212 and the secondary fire outlet hole 213 are respectively communicated with the air guide groove 214.

When the gas stove is ignited, the valve core 200 rotates relative to the valve body 100 until the air inlet 211 is communicated with the air inlet channel 110, the main fire air outlet hole 212 is communicated with the main fire channel 120, and the secondary fire air outlet hole 213 is communicated with the secondary fire channel 130. When the fire of the gas stove is adjusted, the valve core 200 is also rotated relative to the valve body 100, and when the overlapping area of the air inlet 211 and the air inlet channel 110 is the largest, the overlapping area of the main fire air outlet hole 212 and the main fire channel 120 is the largest, and the overlapping area of the secondary fire air outlet hole 213 and the secondary fire channel 130 is the largest, the fire of the gas stove is the largest; as the corresponding overlap area decreases, the fire correspondingly decreases. The air guide groove 214 is arranged so that the gas flowing from the air inlet 211 is evenly divided into the main fire outlet hole 212 and the secondary fire outlet hole 213, and the gas flow rates of the main fire channel 120 and the secondary fire channel 130 are synchronously changed.

In the prior art, most of the gas enters from the bottom of the valve core 200, and the side wall of the valve cavity is respectively provided with the main fire vent hole 212 and the secondary fire vent hole 213 which are communicated, so that the gas flows into the main fire channel 120 and the secondary fire channel 130, and therefore, the problem is caused that the gas is unevenly distributed, and the main fire and the secondary fire cannot be synchronously changed, so that the cooking quality is influenced. In order to solve the problem, in some technical schemes, the gas inlet 211 is arranged on the side surface of the valve core 200, so that the inflowing gas can be evenly divided, and the gas inlet 211, the main fire gas outlet hole 212 and the secondary fire gas outlet are communicated with the valve cavity, so that a new problem is brought, namely the gas is easy to enter from the bottom in the valve cavity, and the condition of even gas division is damaged. In the ultra-thin synchronous plug valve structure disclosed in CN109578622A, a plurality of sealing structures are provided in the valve cavity to prevent the fuel gas from entering from the bottom of the valve cavity, however, the sealing structures are easy to fail, and therefore, the safety is poor.

In the invention, the gas inlet 211, the main fire vent hole 212 and the secondary fire vent hole 213 are blocked with the valve cavity, so that the gas flowing in from the gas inlet 211 can be evenly distributed to the main fire vent hole 212 and the secondary fire vent hole 213 through the gas guide groove 214 without passing through the valve cavity, and the gas in the valve cavity can not flow into the main fire vent hole 212 and the secondary fire vent hole 213, thereby effectively ensuring the synchronous flow of the main fire and the secondary fire. And a sealing structure is not required, so that the structure is simple and the safety is high.

The plug valve further includes a solenoid valve 233, and the solenoid valve 233 is inserted into the valve body 100. Specifically, the air inlet passage 110 is not a straight passage and has a corner, the solenoid valve 233 is inserted into the corner of the air inlet passage 110, and the solenoid valve 233 can move relative to the valve body 100 to control the on-off condition of the air inlet passage 110, thereby further realizing the on-off of the air inlet 211 and the air inlet passage 110. The solenoid valve 233 functions as a misfire protector. The electromagnetic valve 233 can move between a first ignition position and a second flameout position, so that in an initial state, the electromagnetic valve 233 is located at the second flameout position, the air inlet passage 110 is disconnected, gas cannot enter the air inlet 211 through the air inlet passage 110, and the plug valve cannot ignite, thereby playing a role in flameout protection; when the electromagnetic valve 233 is at the first position, the electromagnetic valve 233 is pushed open, the air inlet passage 110 is communicated, the gas can enter the air inlet 211 through the air inlet passage 110, and the plug valve can be normally ignited.

The plug valve further comprises a flow regulating nail 400 and a flow regulating channel 440, wherein the flow regulating nail 400 is embedded in the valve body 100, one end of the flow regulating channel 440 is connected with the valve core 200, and the other end of the flow regulating channel is connected with the secondary fire channel 130 through the flow regulating nail 400. Specifically, the flow rate adjusting nail 400 is arranged at the connecting position of the secondary fire channel 130 and the flow rate adjusting channel 440, and the size of the communication between the secondary fire channel 130 and the flow rate adjusting channel 440 is realized by adjusting the flow rate adjusting nail 400. In a minimum fire condition, the flow regulating pin 400 may regulate the flow of gas into the secondary fire channel 130. Specifically, the flow rate adjusting nail 400 is arranged in parallel with the valve core 200, one end of the flow rate adjusting nail 400 facing the secondary fire channel 130 is an adjusting end 410, the outer diameter of the adjusting end 410 is smaller than the inner diameter of a cavity for accommodating the flow rate adjusting nail 400, the adjusting end 410 is provided with a first through hole 420 perpendicular to the flow rate adjusting nail 400 and communicated with the flow rate adjusting channel 440, and a second through hole 430 communicated with the secondary fire channel 130 and parallel to the flow rate adjusting nail 400, the first through hole 420 is communicated with the second through hole 430, and the adjusting end 410 is provided with a conical surface and is abutted against the secondary fire channel 130 through the conical surface. When the flow regulating nail 400 moves up and down along the vertical direction, the size of the flow space between the regulating end 410 and the secondary fire channel 130 can be regulated, and further the regulation of the gas flow of the secondary fire channel 130 by the flow regulating nail 400 is realized.

Further, the valve cavity is internally penetrated by the valve needle 231, and as shown in fig. 2, the inner wall of the valve cavity extends circumferentially inwards to form a first boss 221, which divides the valve cavity into an upper spring cavity 222 and a lower vent cavity 223. A spring is sleeved between the needle 231 and the first boss 221 in the spring cavity 222, and the knob rod 300 is inserted through the valve body 100 and connected with the needle 231. The first boss 221 is provided with a valve sleeve 232 and a sealing ring on the side facing the spring chamber 222, so as to further improve the sealing effect and fix the spring. Vent chamber 223 extends all the way to the bottom of valve body 100 forming a second gas port 235, and valve needle 231 may extend through second gas port 235 to the outside of valve body 100 when valve needle 231 is pressed downward.

A first air port 234 opened toward the bottom is provided in the valve body 100 at a corner position where the solenoid valve 233 communicates with the intake passage 110.

The plug valve further comprises a bottom cap 500 sealing the valve body 100 from the bottom of the valve body 100, a rotatable lever 510 is arranged in the bottom cap 500, and a dial 511 capable of abutting against the valve needle 231 and an arm 512 capable of pushing the solenoid valve 233 to move between a first position and a second position are arranged on the lever 510. The arm 512 is inserted into the first air port 234 and abuts against the solenoid valve 233. When the plug valve is opened, an operator needs to press the knob rod 300 downwards to drive the valve needle 231 to move downwards, the valve needle 231 penetrates through the second air port 235 to be abutted to the shifting piece 511, and the shifting piece 511 is pressed downwards to enable the shifting piece 511 to drive the lever 510 to rotate, further drive the arm 512 to move, push the electromagnetic valve 233, enable the electromagnetic valve 233 to reach the first position, and enable the plug valve to be ignited successfully.

The outer surface of the upper portion of the valve body 100 is detachably provided with a fixing bracket 310, and the knob stem 300 is inserted into the spring chamber 222 through the fixing bracket 310.

A spring is sleeved on the knob rod 300 between the fixing frame 310 and the valve body 100, a pressing plate 320 is sleeved on one side of the fixing frame 310 facing the valve body 100, and the pressing plate 320 is abutted against the micro switch 330. The micro switch 330 is fixedly disposed at one side of the valve body 100. When knob lever 300 is pressed down, pressure plate 320 simultaneously presses micro switch 330, which ignites the stopcock.

The knob rod 300 is provided with an integrally formed protruding rod 340 towards one end of the valve body 100, the protruding rod 340 is arranged along a direction perpendicular to the knob rod 300, and the protruding rod 340 is inserted into the groove 215 at the upper end of the valve core 200, so that the valve core 200 can be driven to rotate together when the knob rod 300 rotates.

The working principle of the plug valve is as follows:

1. and (3) ignition: the knob rod 300 is pressed downwards and rotated, the knob rod 300 drives the valve needle 231 to move downwards, the valve needle 231 props against the shifting piece 511 and presses the shifting piece 511 downwards, the shifting piece 511 drives the lever 510 to rotate, the arm part 512 is driven to move, the electromagnetic valve 233 is pushed, and the electromagnetic valve 233 reaches a first position; the valve core 200 is driven by the knob rod 300 to rotate, the air inlet channel 110 is communicated with the air inlet 211, the main fire air outlet hole 212 is communicated with the main fire channel 120, and the secondary fire air outlet hole 213 is communicated with the secondary fire channel 130, so that the gas is conveyed; the pressure plate 320 synchronously presses the microswitch 330 to ignite the plug valve.

2. Adjusting the fire: the knob lever 300 rotates the valve core 200, and when the overlapping area of the air inlet passage 110 and the air inlet 211, the overlapping area of the main fire outlet hole 212 and the main fire passage 120, and the overlapping area of the sub fire outlet hole 213 and the sub fire passage 130 are all maximized, the fire behavior is maximized. When the valve core 200 is rotated to the overlapping area of the air inlet passage 110 and the air inlet 211, the overlapping area of the main fire outlet hole 212 and the main fire passage 120, and the overlapping area of the secondary fire outlet hole 213 and the secondary fire passage 130 are both reduced, the fire behavior is correspondingly reduced.

3. In the minimum fire state, the fire intensity of the secondary fire is adjusted by adjusting the flow adjusting nail 400 in the vertical direction. When the flow regulating nail 400 moves in the vertical direction, the flow space between the regulating end 410 and the secondary fire channel 130 is enlarged, and the gas flow of the secondary fire channel 130 is increased; when the flow rate adjustment nail 400 is moved downward in the vertical direction, the flow space between the adjustment end 410 and the sub fire passage 130 becomes smaller, and the gas flow rate of the sub fire passage 130 decreases.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A plug valve, comprising:

2. The plug valve of claim 1, further comprising a solenoid valve, wherein the solenoid valve is inserted into the valve body, and the solenoid valve is movable relative to the valve body to control the on/off state of the air inlet passage.

3. The plug valve of claim 2, wherein the inlet passage has a corner and the solenoid valve is inserted at the corner of the inlet passage.

4. The plug valve of claim 1, further comprising a flow regulating pin embedded in the valve body and a flow regulating channel having one end connected to the valve core and the other end connected to the secondary fire channel via the flow regulating pin.

5. The plug valve of claim 1, wherein the valve cavity has the valve needle inserted therethrough, and an inner wall of the valve cavity extends circumferentially inward to form a first protrusion that divides the valve cavity into an upper spring cavity and a lower vent cavity.

6. The plug valve of claim 5, wherein a spring is received between the needle and the first boss within the spring chamber.

7. The plug valve of claim 6, wherein the first boss defines the valve sleeve and the sealing ring on a side of the first boss facing the spring chamber.

8. The plug valve of claim 5, further comprising a knob stem inserted through the valve body and connected to the valve needle.

9. The plug valve of claim 2, further comprising a bottom cap sealing the valve body from the bottom of the valve body, the bottom cap having a rotatable lever disposed therein, the lever having a finger engageable with the valve needle and an arm for moving the solenoid.