CN213711977U

CN213711977U - Plug valve and gas stove

Info

Publication number: CN213711977U
Application number: CN202021853889.5U
Authority: CN
Inventors: 卢楚鹏; 周奋
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-07-16
Anticipated expiration: 2030-08-29

Abstract

The utility model discloses a plug valve, which comprises a valve body, wherein the valve body is sequentially provided with an air inlet, a pressure stabilizing part, a valve core part and a first air outlet along the airflow direction, the interior of the pressure stabilizing part is provided with a first valve port, and the interior of the valve core part is provided with a second valve port; the air inlet, the first valve port, the second valve port and the first air outlet are communicated in sequence; the pressure stabilizing device is fixedly arranged on the pressure stabilizing part and is used for adjusting the size of the flow area of the first valve port; the valve core assembly comprises a valve core arranged inside the valve core part; the valve core can rotate along the axial direction of the valve core to adjust the size of the flow area of the second valve port; the utility model ensures stable combustion condition, avoids the occurrence of unstable combustion, flameout noise and other situations, and improves the use experience of users; in addition the utility model also discloses a gas-cooker that contains above-mentioned plug valve.

Description

Plug valve and gas stove

Technical Field

The utility model relates to a technical field of plug valve especially relates to a plug valve and gas-cooker.

Background

In the working process of the existing gas stove, a pressure reducing device (such as a pressure reducing valve) is generally arranged at the front end of an air inlet to reduce the pressure of an air source and then enter the gas stove for combustion, however, the combustion working condition of the household gas stove is unstable due to the unstable pressure of the air source under the influence of the quality of the pressure reducing device, the air consumption and the like. When the pressure of an air source is higher, the flow speed of mixed gas of gas and air at a fire hole of a burner is increased, so that unstable combustion of flame separation can occur, even incomplete combustion of yellow flame occurs, and the ignition success rate can be influenced during ignition; when the pressure of the gas source is lower, the flow speed of the mixed gas of the gas and the air at the fire hole of the burner is reduced, and when the flow speed is reduced to be less than the burning speed, tempering can occur; meanwhile, the flow speed of the mixed gas is reduced, and when fire is turned off, large flameout noise is easily caused, and the user experience is poor.

Therefore, in order to overcome the defects, technicians set air door plates at the nozzle of the plug valve of the gas stove to adjust the introduced primary air amount (namely, the proportion of mixed gas in the combustor) so as to achieve the purpose of changing the combustion working condition, so that the mixed gas is matched with the combustor to stably combust, but most users cannot adjust the air door plates, and other high-end gas stoves are not provided with the air door plates, so that the combustion working condition cannot be adjusted, and the defects are inevitably caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a plug valve and a gas stove are provided to solve one or more technical problems existing in the prior art, at least provide a profitable selection or create the condition.

The technical problem is solved by the following technical scheme:

the utility model provides a plug valve, which comprises a valve body, wherein the valve body is sequentially provided with an air inlet, a pressure stabilizing part, a valve core part and a first air outlet along the airflow direction, the interior of the pressure stabilizing part is provided with a first valve port, and the interior of the valve core part is provided with a second valve port; the air inlet, the first valve port, the second valve port and the first air outlet are communicated in sequence; the pressure stabilizing device is fixedly arranged on the pressure stabilizing part and is used for adjusting the size of the flow area of the first valve port; the valve core assembly comprises a valve core arranged inside the valve core part, and the valve core can rotate along the axial direction of the valve core so as to adjust the flow area of the second valve port.

Compared with the plug valve in the background technology, the plug valve in the application has the advantages that the pressure stabilizing device is arranged at the front end of the valve core part, gas flows into the pressure stabilizing device through the gas inlet, and when the gas pressure is higher, the pressure stabilizing device adjusts and reduces the flow area of the first valve port, so that the pressure of the high-pressure gas passing through the first valve port with the reduced flow area can be stabilized to a certain set value; when the gas pressure is lower, the pressure stabilizing device adjusts and increases the flow area of the first valve port, so that the pressure of the low-pressure gas passing through the first valve port with the increased flow area can be stabilized to a certain set value; thereby the gas velocity of flow that makes to flow into the combustor also is stable, therefore the mist velocity of flow of combustor fire hole department all keeps unanimous always to guarantee that the burning operating mode is stable, avoid appearing from the emergence of the circumstances such as unstable burning of flame, flame-out noise, promote user's use and experience.

In one embodiment, the pressure stabilizing device comprises a shell with two open ends, a pressure regulating piece, a pressure regulating spring, a valve and a diaphragm, wherein one end of the shell is hermetically mounted on the pressure stabilizing part through the diaphragm; the pressure regulating part is provided with a pressure regulating end which can move along the center line of the opening at the other end of the shell; one end of the pressure regulating spring is abutted against the pressure regulating end, and the other end of the pressure regulating spring is abutted against the diaphragm; one end of the valve is connected with the diaphragm in a sealing mode, and the other end of the valve extends into the pressure stabilizing part and is used for adjusting the flow area of the first valve port.

In one embodiment, the pressure regulating member is a nut, the other end of the housing is provided with an internal thread, one end of the nut extends into the opening at the other end of the housing to be in threaded fit with the internal thread, and one end of the pressure regulating spring is abutted to one end of the nut.

In one embodiment, the valve body further comprises a stop valve part positioned between the pressure stabilizing part and the valve core part and a stop valve fixedly arranged on the stop valve part; the stop valve is provided with a valve cap for controlling the opening or closing of the third valve port, and the stop valve has the advantages that once gas leakage occurs at the valve core, the stop valve is closed, and the use safety of the gas stove is improved.

In one embodiment, the valve core assembly further comprises a valve shaft, one end of the valve shaft is in transmission connection with the valve core, and the other end of the valve shaft extends out of the valve core part, so that the design has the advantage that a user can conveniently adjust the rotation angle of the valve core to adjust the gas flow of the first gas outlet; the valve core is provided with an air inlet channel which extends along the axial direction of the valve core and is communicated with the third valve port and a second air outlet which is communicated with the air inlet channel, and the valve core can rotate along the axial direction of the valve core so as to adjust the size of the overlapping area of the second air outlet and the second valve port.

In one embodiment, the valve core assembly further comprises a valve needle inserted into the air inlet channel, and one end of the valve needle is connected with one end of the valve shaft; the valve cap is arranged on the valve body, the valve cap is arranged on the valve cap, the valve cap is.

In one embodiment, a pressure measuring pipe communicated with the cut-off valve part is fixedly connected to the outer wall of the cut-off valve part, an inner wall of one end, far away from the cut-off valve part, of the pressure measuring pipe is provided with internal threads, sealing is achieved through threaded matching with screws, the pressure measuring pipe is arranged, in the debugging process, the pressure gauge is connected to the pressure measuring pipe, and then the pressure stabilizing setting value of the pressure stabilizing device is adjusted according to the pressure gauge, so that the actual pressure stabilizing requirement is met.

In one embodiment, the pressure stabilizing part, the cut-off valve part and the valve core part are integrally formed, so that the design has the advantages of simplifying the production process and reducing the production cost.

In one embodiment, the number of the first air outlets is at least two, the number of the second valve ports is at least two, and the first air outlets, the second air outlets and the second valve ports are in one-to-one correspondence.

A gas stove comprises the plug valve.

Due to the fact that the plug valve is included, the technical effect is brought by the plug valve and is the same as that of the plug valve, and therefore repeated description is omitted.

Drawings

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

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along the direction C-C in FIG. 1;

fig. 5 is a schematic structural view of the valve body.

Description of reference numerals: 1. a valve body; 10. an air inlet; 11. a voltage stabilizing part; 110. a first valve port; 12. a valve core part; 120. a second valve port; 13. a first air outlet; 14. a cut-off valve portion; 140. a third valve port; 2. a voltage stabilizer; 20. a housing; 21. adjusting a pressing piece; 22. a pressure regulating spring; 23. an air valve; 24. a diaphragm; 3. a valve core assembly; 30. a valve core; 301. an air intake passage; 302. a second air outlet; 31. a valve shaft; 32. a valve needle; 33. a drive rod; 330. a rotating shaft; 331. a first top arm; 332. a second top arm; 4. a stop valve; 40. a bonnet; 5. pressure measuring pipe.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-5, the present application discloses a plug valve, which includes a valve body 1, wherein the valve body 1 is sequentially provided with an air inlet 10, a pressure stabilizing portion 11, a valve core portion 12 and a first air outlet 13 along an air flow direction, the pressure stabilizing portion 11 is provided with a first valve port 110 inside, and the valve core portion 12 is provided with a second valve port 120 inside; the air inlet 10, the first valve port 110, the second valve port 120 and the first air outlet 13 are communicated in sequence; the pressure stabilizing device 2 is fixedly arranged on the pressure stabilizing part 11, and is used for adjusting the size of the flow area of the first valve port 110; the valve core component 3, the valve core component 3 includes a valve core 30 arranged inside the valve core part 12; the valve spool 30 is rotatable in its axial direction to adjust the amount of flow area of the second port 120.

On the basis of the above structure, because the pressure stabilizer 2 is arranged at the front end of the valve core part 12, the gas flows into the pressure stabilizer 2 through the gas inlet 10, when the gas pressure is higher, the pressure stabilizer 2 reduces the flow area of the first valve port 110 by adjustment, so that the pressure of the high-pressure gas passing through the first valve port 110 with the reduced flow area can be stabilized by a certain set value; when the gas pressure is lower, the pressure stabilizer 2 adjusts and increases the flow area of the first valve port 110, so that the pressure of the low-pressure gas passing through the first valve port 110 with the increased flow area can also stabilize a certain set value; thereby the gas velocity of flow that makes to flow into the combustor also is stable, therefore the mist velocity of flow of combustor fire hole department all keeps unanimous always to guarantee that the burning operating mode is stable, avoid appearing from the emergence of the circumstances such as unstable burning of flame, flame-out noise, promote user's use and experience.

In the present embodiment, the pressure stabilizer 2 includes a housing 20 with two open ends, a pressure regulating member 21, a pressure regulating spring 22, a valve 23 and a diaphragm 24, wherein one end of the housing 20 is hermetically mounted on the pressure stabilizer 11 through the diaphragm 24; the pressure regulating piece 21 is provided with a pressure regulating end which can move along the center line of the opening at the other end of the shell 20; one end of the pressure regulating spring 22 is abutted against the pressure regulating end, and the other end is abutted against the diaphragm 24; one end of the valve 23 is hermetically connected with the diaphragm 24, and the other end of the valve extends into the pressure stabilizing part 11 and is used for adjusting the flow area of the first valve port 110. Preferably, pressure regulating spare 21 is the nut, the other end of casing 20 is equipped with the internal thread, the one end of nut stretches into casing 20's other end opening with internal thread screw-thread fit, pressure regulating spring 22's one end with the one end of nut is inconsistent.

Specifically, in the working process of the pressure stabilizer 2, when the pressure of the external air source is higher, the gas pushes the diaphragm 24 to move upwards, the diaphragm 24 is linked with the valve 23, so that the gap between the valve 23 and the first valve port 110 is reduced, and therefore the pressure of the high-pressure gas flowing through the valve port with the reduced opening can be stabilized at a certain set value; when the pressure of the external air source is lower, the pressure regulating spring 22 pushes the diaphragm 24 to move downwards, and the diaphragm 24 is linked with the valve 23, so that the clearance between the valve 23 and the first valve port 110 is increased, and the low-pressure gas can be stabilized at a certain set value through the valve port with the increased opening; therefore no matter outside air supply is on the high side or on the low side, the atmospheric pressure that flows out first valve port 110 is stabilized at the setting value to the gas velocity of flow that makes to flow into the combustor also is stable, and consequently the mist velocity of flow of combustor fire hole department all keeps unanimous always, thereby guarantees that the burning operating mode is stable, avoids appearing from the emergence of the circumstances such as unstable burning of flame, flame-out noise, promotes user's use and experiences.

It is easy to understand that, pressure regulating part 21 also can be step motor, and step motor's axis of rotation is inconsistent with pressure regulating spring 22, and the flexible volume of control pressure regulating spring 22 is in order to realize the adjustment of this steady voltage device 2 output pressure value, and the benefit that adopts step motor simultaneously is: when the user debugs at home, the panel can be prevented from being disassembled to manually adjust the pressure regulating spring 22, and the control circuit is directly used to indirectly adjust the pressure regulating spring 22.

In the present embodiment, the valve body 1 further includes a shut-off valve portion 14 located between the pressure stabilizing portion 11 and the valve body portion 12, and a shut-off valve 4 fixedly mounted to the shut-off valve portion 14; the shut-off valve portion 14 is provided with a third port 140 communicating with the first port 110 and the second port 120, respectively, and the shut-off valve 4 is provided with a bonnet 40 for controlling the opening and closing of the third port 140, so that the shut-off valve 4 is closed when gas leaks from the valve body 30, thereby improving the safety of the gas range.

It should be noted that, in the present embodiment, the stop valve 4 is an electromagnetic valve, and since the specific structure of the electromagnetic valve and the installation manner thereof are well known to those skilled in the art, detailed description of the specific structure of the electromagnetic valve and the installation structure thereof with the stop valve portion 14 will not be provided in this embodiment.

In this embodiment, the valve core assembly 3 further includes a valve shaft 31, one end of the valve shaft 31 is in transmission connection with the valve core 30, and the other end of the valve shaft 31 extends out of the valve core portion 12, so that the design is beneficial to a user to adjust the rotation angle of the valve core 30 to adjust the gas flow of the first gas outlet 13; the valve core 30 is provided with an air inlet channel 301 extending along the axial direction of the valve core 30 and communicated with the third valve port 140, and a second air outlet 302 communicated with the air inlet channel 301, and the valve core 30 can rotate along the axial direction of the valve core to adjust the overlapping area of the second air outlet 302 and the second valve port 120 so as to realize gas flow adjustment.

In this embodiment, the valve core assembly 3 further includes a valve needle 32 inserted into the air inlet channel 301, and one end of the valve needle 32 is connected to one end of the valve shaft 31; and a driving rod 33 rotatably disposed inside the valve body 1, wherein the driving rod 33 includes a rotating shaft 330, a first top arm 331 capable of abutting against the other end of the valve needle 32, and a second top arm 332 capable of pushing the bonnet 40 away from the third valve port 140, and the first top arm 331 and the second top arm 332 are respectively connected to an outer wall of the rotating shaft 330, so that, when a user presses down and rotates the valve shaft 31 during ignition, the valve core 30 is driven to rotate so as to enable the second air outlet 302 to be overlapped and communicated with the second valve port 120, and simultaneously, the valve needle 32 presses down the first top arm 331 to rotate the rotating shaft 330, so as to drive the second top arm 332 to open the bonnet 40, so as to open the third valve port 140, thereby achieving the communication of the fuel gas.

In the present embodiment, there is an ignition operation during the process of pressing the needle 32 down the first top arm 331, and since the ignition structure and the ignition method of the plug valve are well known to those skilled in the art, the ignition structure and the ignition method of the plug valve will be described in detail in the present application.

In this embodiment, the outer wall of the cut-off valve part 14 is fixedly connected with a pressure measuring pipe 5 communicated with the cut-off valve part, the inner wall of one end of the pressure measuring pipe 5 far away from the cut-off valve part 14 is provided with internal threads, sealing is realized through thread matching with a screw, and by arranging the pressure measuring pipe 5, in the debugging process, a pressure gauge is connected to the pressure measuring pipe 5, and then the pressure stabilizing setting value of the pressure stabilizing device 2 is adjusted according to the pressure gauge, so that the actual pressure stabilizing requirement is met.

Preferably, in the present embodiment, the pressure stabilizing portion 11, the cut-off valve portion 14 and the valve core portion 13 are integrally formed, which has the advantages of simplifying the production process and reducing the production cost.

In this embodiment, the number of the first air outlets 13, the number of the second air outlets 302, and the number of the second valve ports 120 are two, and the first air outlets 13, the second air outlets 302, and the second valve ports 120 are all in one-to-one correspondence, so that the advantage of the design is that the gas flow regulation of the dual gas paths can be realized.

A gas stove comprises the plug valve.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The details of the foregoing embodiments are merely representative of several embodiments of the present invention, which are described in more detail and detail, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A plug valve, characterized by: comprises that

The valve body is sequentially provided with an air inlet, a pressure stabilizing part, a valve core part and a first air outlet along the airflow direction, a first valve port is arranged inside the pressure stabilizing part, and a second valve port is arranged inside the valve core part; the air inlet, the first valve port, the second valve port and the first air outlet are communicated in sequence;

the pressure stabilizing device is fixedly arranged on the pressure stabilizing part and is used for adjusting the size of the flow area of the first valve port;

the valve core assembly comprises a valve core arranged inside the valve core part, and the valve core can rotate along the axial direction of the valve core so as to adjust the flow area of the second valve port.

2. The plug valve of claim 1, wherein: the pressure stabilizing device comprises a shell with openings at two ends, a pressure regulating piece, a pressure regulating spring, an air valve and a diaphragm, wherein one end of the shell is hermetically arranged on the pressure stabilizing part through the diaphragm; the pressure regulating part is provided with a pressure regulating end which can move along the center line of the opening at the other end of the shell; one end of the pressure regulating spring is abutted against the pressure regulating end, and the other end of the pressure regulating spring is abutted against the diaphragm; one end of the valve is connected with the diaphragm in a sealing mode, and the other end of the valve extends into the pressure stabilizing part and is used for adjusting the flow area of the first valve port.

3. The plug valve of claim 2, wherein: the pressure regulating part is a nut, the other end of the shell is provided with an internal thread, one end of the nut extends into an opening at the other end of the shell and is in threaded fit with the internal thread, and one end of the pressure regulating spring is abutted to one end of the nut.

4. The plug valve of claim 1, wherein: the valve body further comprises a stop valve part positioned between the pressure stabilizing part and the valve core part and a stop valve fixedly arranged on the stop valve part; and a third valve port communicated with the first valve port and the second valve port is arranged in the stop valve part, and the stop valve is provided with a valve cap for controlling the third valve port to be opened or closed.

5. The plug valve of claim 4, wherein: the valve core assembly also comprises a valve shaft, one end of the valve shaft is in transmission connection with the valve core, and the other end of the valve shaft extends out of the valve core part; the valve core is provided with an air inlet channel which extends along the axial direction of the valve core and is communicated with the third valve port and a second air outlet which is communicated with the air inlet channel, and the valve core can rotate along the axial direction of the valve core so as to adjust the overlapping area of the second air outlet and the second valve port.

6. The plug valve of claim 5, wherein: the valve core assembly further comprises a valve needle inserted in the air inlet channel, and one end of the valve needle is connected with one end of the valve shaft; and

the valve body is provided with a valve cover, a valve needle is arranged in the valve body, the valve cover is arranged at the other end of the valve needle, a driving rod is rotatably arranged in the valve body and comprises a rotating shaft, a first top arm and a second top arm, the first top arm can be abutted to the other end of the valve needle, the second top arm can push the valve cover to be away from the third valve port, and the first top arm and the second top arm are respectively connected to the.

7. The plug valve of claim 4, wherein: the outer wall of the cut-off valve part is fixedly connected with a pressure measuring pipe communicated with the cut-off valve part, and the inner wall of one end, far away from the cut-off valve part, of the pressure measuring pipe is provided with internal threads, and sealing is achieved through threaded matching with a screw.

8. The plug valve of claim 7, wherein: the pressure stabilizing part, the stop valve part and the valve core part are integrally formed.

9. The plug valve of claim 5, wherein: the number of the first air outlets is at least two, the number of the second valve ports is at least two, and the first air outlets, the second air outlets and the second valve ports are in one-to-one correspondence.

10. A gas stove is characterized in that: comprising a stopcock according to any one of claims 1 to 9.