CN215950445U

CN215950445U - Ball valve with double seals, stove regulating valve and stove thereof

Info

Publication number: CN215950445U
Application number: CN202120609628.7U
Authority: CN
Inventors: 张健
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-03-04
Anticipated expiration: 2031-03-25

Abstract

The utility model provides a ball valve with double seals, a stove regulating valve and a stove thereof, wherein a sealing body is embedded between the outer wall of the valve ball and the inner wall of a valve body, the sealing body is positioned between two sealing rings, two opposite ends of the sealing body are in one-to-one sealing contact with the two sealing rings, and when a valve rod is closed, the sealing body completely wraps a gas circulation hole and a running track of the gas circulation hole during opening and closing so as to prevent gas from bypassing the gas circulation hole and flowing between the outer wall of the valve ball and the inner wall of the valve body. The utility model provides a ball valve with double seals, a stove regulating valve and a stove, which can improve the sealing property and avoid the problem of outflow through holes.

Description

Ball valve with double seals, stove regulating valve and stove thereof

Technical Field

The utility model relates to the technical field of valves, in particular to a double-seal ball valve, a stove regulating valve and a stove.

Background

The control valves used on the furnaces are all ball valves basically, and the structure of the ball valve can be seen that: except the contact between the valve rod and the sealing ring, the outer circle of the valve ball and the inner wall of the valve body are suspended, namely, have a gap, so that gas or liquid can flow through the gap.

Before the ball valve is opened to the maximum flow rate ninety degrees, the ball valve is provided with two flow passages, for example, when the ball valve is opened to 45 degrees, only half of a circular flow hole in the middle of the ball valve is in an air inlet of the valve, and the other half of the circular flow hole bypasses a sealing ring and enters a gap between the outer wall of the ball valve and the inner wall of a valve body. If we prevent the gas from flowing out of the hole, the working performance of the valve on the stove can be doubled by slightly changing, i.e. one valve is used for playing the role of two valves and only occupies the space of one valve.

Moreover, at present, one stove usually uses 4 gas control valves, specifically a kindling valve, a kindling air-limiting valve, a main kindling valve and a main kindling air-limiting valve, wherein an advanced air-air linkage valve is also provided. For example: see patent document No. CN201821568713.8 for a stove control valve with an authorization date of 2019, 8 months, the last mentioned patent combines a fire valve and a fire air limiting valve together through a pipeline, and combines a main fire valve and a main fire air limiting valve together through a pipeline, thus although a part of the usage space is reduced before comparison, 4 valves are still used on a very long stove and four adjusting holes corresponding to the fire valve, the fire air limiting valve, the main fire valve and the main fire air limiting valve one by one are provided, which results in a stove panel that is not tidy enough and increases the manufacturing cost.

In addition, regarding the air-air linkage valve, in the chinese patent cn201922366472.x, entitled air valve and synchronous air-air linkage valve with the grant date of 9 months in 2020, the circular flow hole of the control valve is changed into a long flow hole, thereby changing the characteristic of the air supply valve into linear output, but the long hole on the valve ball is fixed and cannot be changed, which limits the application range. The stove using the liquefied gas cannot be used on natural gas, the stove using the natural gas cannot be used on the liquefied gas, different valves or components are required to be replaced according to different power, different gas sources and different gas pressure, and therefore the mode is difficult to meet the ever-changing market requirements.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a ball valve with dual seals, and a stove regulating valve and a stove thereof, which at least partially solve one of the above technical problems in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a ball valve with dual seals comprising: the valve comprises a valve body, a valve ball, a valve rod and a sealing ring, wherein a ball valve cavity is defined in the valve body, and a ball valve cavity air inlet and a ball valve cavity air outlet which are communicated with the ball valve cavity and are coaxially arranged are respectively communicated with two opposite side walls of the valve body; a valve rod mounting through hole communicated with the ball valve cavity is formed in the side wall of the valve body, and the central axis of the valve rod mounting through hole is vertical to a connecting line between the air inlet of the ball valve cavity and the air outlet of the ball valve cavity;

the valve ball is rotatably connected in the ball valve cavity, and a gas circulation hole is formed in the valve ball along the diameter direction of the valve ball; one end of the valve rod is positioned outside the valve body, the other end of the valve rod penetrates through the valve rod mounting through hole and is fixed on the valve ball, and the valve rod drives the valve ball to rotate; the sealing washer is two, the one-to-one is close to the air inlet with ball valve chamber gas outlet sealing connection be in the valve ball with between the valve body, still include: the sealing body, the sealing body inlays to be established the outer wall of valve ball with between the inner wall of valve body, simultaneously the sealing body is located two between the sealing washer, just two of the relative both ends one-to-one sealing contact of sealing body the sealing washer, and when the valve rod was closed, the sealing body wrapped up completely the moving trajectory during gas circulation hole and its switch, in order to prevent gas to walk around gas circulation hole follows the outer wall of valve ball with flow through between the inner wall of valve body.

Preferably, the sealing body includes: sealing element, sealing element is the semicircle column shape, just the hemisphere face seal groove has been seted up on sealing element's the rectangle plane, the periphery of the inner wall of hemisphere face seal groove is formed to hemisphere face seal groove outer bellied sealed muscle, simultaneously the both ends that sealing element is relative form "U" font sealed face, the interior concave surface of hemisphere face seal groove corresponds the orientation the rotation plane of valve ball, just the outer wall of valve ball with sealed muscle contact or with whole the inner wall contact of hemisphere face seal groove, sealing element's arc lateral surface with the inner wall contact of valve body, two the sealed face one-to-one sealed contact of "U" font is two the sealing washer.

Preferably, the number of the sealing parts is one or two, the sealing parts are spliced or integrally connected together through a connecting plate, a first mounting through hole and a second mounting through hole which are oppositely distributed are formed between the two sealing parts, and the valve rod penetrates through the first mounting through hole and is connected to the valve ball; the inner concave surfaces of the hemispherical sealing grooves of the two sealing parts face towards the rotating plane of the valve ball correspondingly, the arc-shaped outer side surfaces of the two sealing parts are in contact with the inner wall of the valve body, and each of the two U-shaped sealing surfaces of the two sealing parts are in one-to-one corresponding sealing contact with the two sealing rings.

A stove regulating valve comprising any one of the above ball valves with double seals, further comprising: the valve rod is provided with a working adjusting hole communicated with the gas circulation hole in a penetrating way along the axis direction; the main fire gas limiting structure comprises:

the disc can be round or square according to the shape of the gas circulation hole, the disc is vertically arranged in the gas circulation hole, and the periphery of the disc is correspondingly abutted against the inner wall of the gas circulation hole;

the disc adjusting rod is positioned in the working adjusting hole and is rotationally connected with the inner wall of the working adjusting hole; meanwhile, one end of the disc adjusting rod enters the gas circulation hole through the working adjusting hole and is connected with the disc so as to drive the disc to rotate in the gas circulation hole and adjust the flow rate of gas in the gas circulation hole.

A stove adjusting valve comprising any one of the ball valve with double sealing, further comprising: the fire seed gas limiting structure is characterized in that a work adjusting hole communicated with the gas circulation hole penetrates through the valve rod along the axis direction of the valve rod: the gas limiting structure for the fire seeds comprises:

the valve needle is positioned in the working adjusting hole, is spirally and rotatably connected with the inner wall of the working adjusting hole, can move into the gas through hole along the direction vertical to the gas through hole, and can reciprocate in the gas through hole to adjust the flow of gas in the gas through hole;

the limiting groove is formed in the inner wall of the work adjusting hole, far away from the gas circulation hole, and is collinear with the axis of the valve needle, and meanwhile, the notch of the limiting groove faces towards the valve needle, and the valve needle corresponds to the limiting groove in a clamped mode.

A stove governing valve, includes any kind of above-mentioned double containment's ball valve has, simultaneously the valve body with open on the relative lateral wall of valve rod mounting hole has the linkage installation through-hole, be connected with linkage structure on the valve ball, just linkage structure passes through linkage installation through-hole is connected with the blast gate.

Preferably, the method further comprises the following steps: the linear gas limiting structure is arranged in the gas circulation hole through the working adjusting hole so as to adjust the flow of gas in the gas circulation hole, and the cross section of the gas circulation hole is a square hole.

Preferably, the linear gas limiting structure comprises:

the stirring piece is positioned in the gas circulation hole, the length direction of the stirring piece extends along the circulation direction of gas in the gas circulation hole, meanwhile, two ends of the stirring piece are respectively arranged at two sides of the central axis of the working adjusting hole, one end of the stirring piece is hinged to the inner wall of one side of the gas circulation hole, which is close to the working adjusting hole, and the other end of the stirring piece is a stirring end;

the rotating blade is of a hexahedral structure formed by integrally connecting four planes which are opposite in pairs and are parallel and symmetrical and two symmetrical convex cambered surfaces, and the connection of the two pairs of opposite planes is vertical; the rotating blade is connected with and penetrates through a shaft hole along the center of one pair of planes, a rotating blade shaft is rotatably connected in the shaft hole, the rotating blade shaft is perpendicular to the gas flowing direction in the gas flowing hole and fixed in the middle of the opposite inner walls of the gas flowing hole, the rotating blade shaft is perpendicular to the axis of the valve rod, the center distance between two convex cambered surfaces is equal to the diameter of the valve ball, and the distance H between two opposite planes in the rotating blade distributed along the length direction of the rotating blade shaft is equal to the aperture H0 of the gas flowing hole;

the flow adjusting rod is positioned in the working adjusting hole and is spirally and rotatably connected with the inner wall of the working adjusting hole so as to be capable of moving into the gas circulation hole along the direction vertical to the gas circulation and moving back and forth in the gas circulation hole so as to push the stirring piece to rotate, and the stirring end of the stirring piece can move to abut against the rotating blade so as to drive the rotating blade to rotate to adjust the flow of the gas in the gas circulation hole; meanwhile, when the valve rod is opened and rotated by ninety degrees, the central connecting line of the two convex cambered surfaces is collinear with the central axis of the gas through hole, and the flow of gas in the gas through hole is the maximum gas quantity of the valve;

the gas circulation hole is far away from one side inner wall of the work adjusting hole is provided with a mounting groove, the mounting groove is located on the other side of the central axis of the work adjusting hole opposite to the hinged end of the stirring piece, one end of the reset elastic piece is embedded and fixed in the mounting groove, and the other end of the reset elastic piece can be abutted against the rotating blade to drive the rotating blade to reset.

Preferably, the air valve comprises:

the side wall of the rotary drum is provided with a square first air inlet, one end of the rotary drum is a closed end, the other end of the rotary drum is provided with a round first air outlet, and a rotary drum shaft is fixed at the closed end of the rotary drum;

the side wall of the outer barrel is provided with a square second air inlet, one end of the outer barrel is a closed end, the other end of the outer barrel is provided with a round second air outlet, and the closed end of the outer barrel is provided with a mounting hole; the outer cylinder is sleeved on the rotary cylinder, the rotary cylinder shaft penetrates out of the mounting hole and is connected with a linkage structure, the rotary cylinder can rotate in the outer cylinder, and the linkage structure sequentially penetrates through the linkage mounting through hole and the second mounting through hole to be connected with the valve ball, so that the valve ball and the rotary cylinder synchronously rotate through the linkage structure.

A stove, comprising: the stove regulating valve is any one of the stove regulating valves.

Through the technical scheme, compared with the prior art, the utility model discloses the ball valve with double seals, the stove regulating valve and the stove, and the following technical effects can be realized:

in the process of sealing the circulation among the gas inlet of the ball cavity, the gas circulation hole and the gas outlet of the ball cavity by rotating the sealing valve ball, the sealing body can always seal and prevent the circulation of gas in a gap between the outer wall of the valve ball and the ball cavity (if the sealing body is not arranged, the gas enters the gap between the outer wall of the valve ball and the ball cavity from the port of the gas circulation hole and goes out through the gap between the outer wall of the valve ball and the ball cavity), thereby improving the sealing property of the utility model until the valve ball rotates until the valve ball completely seals the circulation of the gas among the gas inlet of the ball cavity, the gas circulation hole and the gas outlet of the ball cavity, the port of the gas circulation hole is completely sealed by the sealing body, on the contrary, when the valve ball rotates to enable the central axis of the gas circulation hole to be collinear with the central connecting line of the gas inlet of the ball cavity and the gas outlet of the ball cavity, the sealing body does not seal the port of the gas circulation hole any more, meanwhile, the sealing body is matched with the sealing ring, so that the sealing performance of the utility model can be further improved;

the main fire gas limiting structure is arranged in the gas circulation hole through the working adjusting hole, so that the main fire gas limiting structure is suitable for adjusting the size of the main fire of the stove, the maximum gas quantity flowing through is limited, different gas types are adapted, and the universality is high. The disc is driven to rotate for a certain angle around the rotation center line of the disc adjusting rod in the gas circulation hole by rotating the disc adjusting rod, so that the flow of gas in the gas circulation hole can be adjusted, and the size of the main fire of the stove can be adjusted;

the gas circulation hole is internally provided with the fire type gas limiting structure through the working adjusting hole, so that the gas circulation hole is suitable for adjusting the size of the fire type of the stove, thereby limiting the maximum gas flow to adapt to different gas types. The length of the valve needle in the gas circulation hole can be adjusted by rotating the valve needle to screw the valve needle into or out of the gas circulation hole, so that the flow of gas in the gas circulation hole can be adjusted to adjust the size of the fire of the stove;

the stove regulating valve can be connected with the air valve to work together with the air valve, so that the combustion supporting performance of the stove regulating valve is improved, the air valve can be independently and directly arranged between the fan and the combustor, the installation cost of the air pipe is saved, and the possibility of faults is reduced.

The linear gas limiting structure is arranged in the gas flow through the working adjusting hole, so that the maximum gas flow can be limited to adapt to different gas types, and the linear gas limiting structure is arranged in the gas flow with the square cross section, so that the process of outputting gas is linear output, the gas flow in the gas flow is adjusted in proportion, and the accuracy of the gas limiting structure is improved.

The first air inlet formed in the rotary drum of the air valve and the second air inlet formed in the outer cylinder are both square, and the first air outlet formed in the rotary drum of the air valve and the second air outlet formed in the outer cylinder are both circular, so that the output gas of the air valve can be ensured to be linearly output.

Drawings

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

FIG. 1 is an exploded view of a seal assembly of the present invention engaged with a valve ball, a valve body and a seal ring, respectively;

FIG. 2 is a block diagram of a sealing member of the present invention engaged with a valve ball and a sealing ring, respectively;

FIG. 3 is a block diagram of the connection between a sealing member and the ball, valve body and seal ring, respectively, of the present invention;

FIG. 4 is a block diagram of two seal components of the present invention connected together by a web;

FIG. 5 is a sectional view of a furnace regulating valve in embodiment 3 of the present invention;

FIG. 6 is a sectional view of a furnace regulating valve in embodiment 4 of the present invention;

FIG. 7 is a sectional view of a furnace regulating valve in embodiment 5 of the present invention;

FIG. 8 is a left side view of the valve ball of example 5 of the present invention;

FIG. 9 is a top view of a valve ball according to example 5 of the present invention;

FIG. 10 is a schematic structural view of a rotary vane in example 5 of the present invention;

FIG. 11 is a front view of an air damper according to embodiment 6 of the present invention;

FIG. 12 is a plan view of an air damper according to embodiment 6 of the present invention;

fig. 13 is a left side view of the air damper in embodiment 6 of the utility model.

Wherein, 2-sealing body; 21-a sealing member; 203-a first mounting aperture; 200-arc inner grooves; 1-a valve body; 3-a valve ball; 4-a valve stem; 5-main fire gas limiting structure; 10-ball valve cavity; 101-ball valve chamber inlet; 102-ball valve chamber outlet; 103-valve rod mounting through holes; 30-gas flow holes; 51-disc; 52-disc adjusting lever; 6-fire species gas limiting structure; 61-a valve needle; 62-a limit groove; 7-a linear gas-limiting structure; 204-a second mounting aperture; 71-a toggle piece; 73-leaf rotation; 730-shaft hole; 731-rotating the leaf axis; 74-flow regulating rod; 75-a return spring; 8-blast gate; 81-drum; 811-square first air inlet; 812-a circular first air outlet; 813-drum shaft; 82-an outer cylinder; 821-square second air inlet; 822-a circular second air outlet; 80-linkage structure; 9-handle-; 820-mounting holes; 209-sealing rib; 20-a connecting plate; 11-a sealing ring; 203-a first mounting through hole; 204-second mounting through hole.

Detailed Description

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

The utility model discloses a ball valve with double seals, comprising: the valve comprises a valve body 1, a valve ball 3, a valve rod 4 and a sealing ring 11, wherein a ball valve cavity 10 is defined in the valve body 1, and a ball valve cavity air inlet 101 and a ball valve cavity air outlet 102 which are communicated with the ball valve cavity 10 and are coaxially arranged are respectively communicated on two opposite side walls of the valve body 1; a valve rod mounting through hole 103 communicated with the ball valve cavity 10 is formed in the side wall of the valve body 1, and the central axis of the valve rod mounting through hole 103 is perpendicular to a connecting line between a ball valve cavity air inlet 101 and a ball valve cavity air outlet 102;

the valve ball 3 is rotatably connected in the ball valve cavity 10, and a gas circulation hole 30 is formed in the valve ball 3 along the diameter direction; one end of the valve rod 4 is positioned outside the valve body 1, the other end of the valve rod 4 penetrates through the valve rod mounting through hole 103 and is fixed on the valve ball 3, and the valve rod 4 drives the valve ball 3 to rotate; sealing washer 11 is two, and the one-to-one is close to air inlet 101 and ball valve chamber gas outlet 102 sealing connection between valve ball 3 and valve body 1, still includes: the seal 2, the seal 2 inlays to be established between the outer wall of valve ball 3 and the inner wall of valve body (1), and the seal 2 is located between two sealing washer 11 simultaneously, and two sealing washer 11 of the sealed contact of 2 relative both ends one-to-one to when valve rod 4 is closed, the orbit when seal 2 wraps up gas circulation hole 30 and its switch completely, flow through between the outer wall of preventing gas circulation hole 30 follow valve ball 3 and the inner wall of valve body 1.

In the process of sealing the circulation among the ball cavity air inlet 101, the gas circulation hole 30 and the ball cavity air outlet 102 by the sealing body 2, the sealing valve ball 3 of the utility model can always seal and prevent the circulation of gas in the gap between the outer wall of the valve ball 3 and the ball cavity 10 by the sealing body 2 (if the sealing body 2 is not provided, the gas enters the gap between the outer wall of the valve ball 3 and the ball cavity 10 from the port of the gas circulation hole 30 and goes out through the gap between the outer wall of the valve ball 3 and the ball cavity 10), thereby improving the sealing performance of the utility model, until the valve ball 3 rotates until the valve ball 3 completely seals the circulation of the gas among the ball cavity air inlet 101, the gas circulation hole 30 and the ball cavity air outlet 102, the port of the gas circulation hole 30 is completely sealed by the sealing body 2, on the contrary, when the valve ball 3 rotates to make the central axis of the gas circulation hole 30 and the central line of the ball cavity sealing body air inlet 101 and the ball cavity air outlet 102, the sealing body 2 no longer seals the port of the gas flow hole 30, and at the same time, the sealing body 2 of the present invention is fitted with the seal ring 11, so that the sealing performance of the present invention can be further improved.

In order to further optimize the above technical solution, the sealing body 2 includes: sealing member 21, sealing member 21 is the semicircle column shape, and seted up hemisphere face seal groove 200 on sealing member 21's the rectangle plane, the periphery of hemisphere face seal groove 200's inner wall is formed with the outside bellied sealing rib 209 of hemisphere face seal groove 200, the both ends that sealing member 21 is relative simultaneously form "U" font sealed face, hemisphere face seal groove 200's interior concave surface corresponds the rotation plane towards valve ball 3, and valve ball 3's outer wall and sealing rib 209 contact or with the inner wall contact of whole hemisphere face seal groove 200, sealing member 21's arc lateral surface and the inner wall contact of valve body 1, two sealing washer 11 of two "U" font sealed face one-to-one sealed contacts.

The valve ball 3 rotates in the hemispherical seal groove 200, the seal rib 209 can always seal a gap between the outer wall of the valve ball 3 and the inner wall of the valve body 1, only under the condition that the part of the outer wall of the valve ball 3 can be contacted with the seal rib 209 of the hemispherical seal groove 200, the contact area between the valve ball 3 and the inner wall of the hemispherical seal groove 200 is small, so that the valve ball 3 can easily and flexibly rotate in a ball valve cavity; in the case that all of the outer wall of the valve ball 3 can contact with the inner wall of the hemispherical seal groove 200 (including all of the seal ribs 209), the contact area between the valve ball 3 and the inner wall of the hemispherical seal groove 200 is large, so that the valve ball 3 is difficult to rotate in the ball valve cavity.

In order to further optimize the technical scheme, one or two sealing components 21 are spliced or integrally connected together through the connecting plate 20, a first mounting through hole 203 and a second mounting through hole 204 which are oppositely distributed are formed between the two sealing components 21, and the valve rod 4 passes through the first mounting through hole 203 and is connected to the valve ball 3; the inner concave surfaces of the hemispherical seal grooves 200 of the two seal parts 21 correspond to the rotating planes facing the valve ball 3, the arc outer side surfaces of the two seal parts 21 contact with the inner wall of the valve body 1, and the two U-shaped seal surfaces of each seal part 21 are in one-to-one corresponding sealing contact with the two seal rings 11.

The sealing body 2 of the utility model is spliced or integrally connected together by two sealing parts 21 through a connecting plate 20, meanwhile, a first mounting through hole 203 and a second mounting through hole 204 which are oppositely distributed are formed between the two sealing parts 21, and the valve rod 4 passes through the first mounting through hole 203 and is connected on the valve ball 3; the hemispherical seal grooves 200 of the two seal members 21 are in one-to-one correspondence with the air inlet and the air outlet of the gas flow hole 30, so that the outer wall of the valve ball 3 and the inner wall of the valve body 1 can be sealed doubly, so that the gas can be prevented from flowing between the outer wall of the valve ball 3 and the inner wall of the valve body 1, and the sealing performance of the utility model can be further improved.

A stove regulating valve comprising any one of the above ball valves with double seals, further comprising: the main fire limiting structure 5 is characterized in that a working adjusting hole communicated with the gas circulation hole 30 penetrates through the valve rod 4 along the axis direction; the main fire limiting structure 5 includes:

a disc 51 which can be round or square according to the shape of the gas circulation hole 30, wherein the disc 51 is vertically arranged in the gas circulation hole 30, and the periphery of the disc 51 is correspondingly abutted against the inner wall of the gas circulation hole 30;

the disc adjusting rod 52 is positioned in the working adjusting hole and is rotationally connected with the inner wall of the working adjusting hole; meanwhile, one end of the disc adjusting rod 52 enters the gas circulation hole 30 through the working adjusting hole to connect the disc 51, so as to drive the disc 51 to rotate in the gas circulation hole 30 to adjust the flow rate of the gas in the gas circulation hole 30.

The main fire gas limiting structure 5 is arranged in the gas circulation hole 30 through the working adjusting hole, so that the main fire gas limiting structure is suitable for adjusting the size of the main fire of the stove, the maximum gas quantity flowing through is limited, different gas types are adapted, and the universality is high. That is, the disc 51 is driven to rotate a certain angle around the rotation center line of the disc adjusting rod 52 in the gas flow hole 30 by rotating the disc adjusting rod 52, so that the flow rate of the gas in the gas flow hole 30 can be adjusted to adjust the size of the main fire of the stove.

A stove regulating valve comprising any one of the above ball valves with double seals, further comprising: the fire kind gas limiting structure 6, the valve rod 4 has the work adjusting hole communicated with the gas circulation hole 30 through along the axis direction: the gas limiting structure 6 for fire species includes:

the valve needle 61 is positioned in the working adjusting hole, is spirally and rotatably connected with the inner wall of the working adjusting hole, can move into the gas circulation hole 30 along the direction vertical to the gas circulation direction, and can reciprocate in the gas circulation hole 30 to adjust the flow rate of the gas in the gas circulation hole 30;

the limiting groove 62 is formed in the inner wall, away from the work adjusting hole, of the gas circulation hole 30, the limiting groove 62 is collinear with the axis of the valve needle 61, the notch of the limiting groove 62 faces the valve needle 61, and the valve needle 61 is correspondingly clamped with the limiting groove 62.

The utility model arranges the fire kind gas limiting structure 6 in the gas circulation hole 30 through the working adjusting hole, so the utility model is suitable for adjusting the size of the fire kind of the stove, thereby limiting the maximum gas quantity flowing through and adapting to different gas kinds. That is, in the present invention, by rotating the needle 61 to screw the needle 61 into or out of the gas communication hole 30, the length of the needle 61 in the gas communication hole 30 can be adjusted, and the flow rate of the gas in the gas communication hole 30 can be adjusted to adjust the size of the stove flame.

A stove regulating valve comprises any one of the ball valves with double seals, a linkage mounting through hole 104 is formed in the side wall of a valve body 1 opposite to a valve rod mounting through hole 103, a linkage structure 80 is connected to a valve ball 3, and the linkage structure 80 is connected with an air valve 8 through the linkage mounting through hole 104.

The stove regulating valve can be connected with the air valve 8 to work together with the air valve 8, so that the purposes of air synchronization and proportional regulation are achieved.

In order to further optimize the above technical solution, the method further comprises: the linear gas limiting structure 7 is characterized in that a work adjusting hole communicated with the gas circulation hole 30 penetrates through the valve rod 4 along the axis direction of the valve rod, the linear gas limiting structure 7 is arranged in the gas circulation hole 30 through the work adjusting hole to adjust the flow rate of gas in the gas circulation hole 30, and the cross section of the gas circulation hole 30 is a square hole.

The linear gas limiting structure 7 is arranged in the gas circulation hole 30 through the working adjusting hole, so that the maximum gas quantity flowing through can be limited to adapt to different gas types, and the linear gas limiting structure 7 is arranged in the gas circulation hole 30 with the square cross section, so that the process of outputting gas is linear output, the gas flow in the gas circulation hole 30 is adjusted in proportion, and the accuracy of the gas flow regulating device is improved.

In order to further optimize the above technical solution, the linear air restriction structure 7 comprises:

the stirring piece 71 is positioned in the gas circulation hole 30, the length direction of the stirring piece 71 extends along the circulation direction of gas in the gas circulation hole 30, two ends of the stirring piece 71 are respectively arranged at two sides of the central axis of the working adjusting hole, one end of the stirring piece 71 is hinged to the inner wall of one side of the gas circulation hole 30 close to the working adjusting hole, and the other end of the stirring piece is a stirring end;

the rotating blade 73 is of a hexahedral structure formed by integrally connecting four planes which are opposite in pairs and are parallel and symmetrical and two symmetrical convex cambered surfaces, and the connection of the two pairs of opposite planes is vertical; the rotating blade 73 is connected with and penetrated through a shaft hole 730 along the center of one pair of planes, a rotating blade shaft 731 is rotationally connected in the shaft hole 730, the rotating blade shaft 731 is perpendicular to the gas flowing direction in the gas flowing hole 30 and fixed in the middle of the opposite inner wall of the gas flowing hole 30, the rotating blade shaft 731 is perpendicular to the axis of the valve rod 4, the center distance between two convex arc surfaces is equal to the diameter of the valve ball 3, and the distance H0 between two opposite planes in the rotating blade 73 distributed along the length direction of the rotating blade shaft 731 is equal to the aperture H of the gas flowing hole 30;

the flow adjusting rod 74 is positioned in the working adjusting hole and is spirally and rotatably connected with the inner wall of the working adjusting hole so as to move into the gas circulation hole 30 along the direction vertical to the gas circulation and can move back and forth in the gas circulation hole 30 so as to push the stirring piece 71 to rotate, and the stirring end of the stirring piece 71 can move to abut against the rotating blade 73 so as to drive the rotating blade 73 to rotate so as to adjust the flow of the gas in the gas circulation hole 30; meanwhile, when the valve rod 4 is opened and rotated by ninety degrees, the central line of the two convex cambered surfaces is collinear with the central axis of the gas through hole 30, and the flow of the gas in the gas through hole 30 is the maximum gas quantity of the stove;

the elastic component 75 resets, and the mounting groove has been seted up to the one side inner wall that the work regulation hole was kept away from to gas circulation hole 30, and the mounting groove is located the work regulation hole axis opposite side with stirring 71 hinged end, and the one end of the elastic component 75 that resets is inlayed and is established and fix in the mounting groove, but the other end butt is on revolving leaf 73 with the drive revolving leaf 73 resets.

According to the utility model, by rotating the flow adjusting rod 74, the flow adjusting rod 74 can be screwed into the gas circulation hole 30 to press the stirring member 71 downwards, the stirring end of the stirring member 71 can rotate towards one side far away from the working adjusting hole, so that one end of the rotating blade 73 is pressed downwards by the stirring end of the stirring member 71, the rotating blade 73 rotates, the adjustment of the gas flow in the gas circulation hole 30 is realized through the rotating angle of the rotating blade 73, and in the rotating process of the rotating blade 73, the gas output from the gas circulation hole 30 is ensured to be linear output, meanwhile, because the center of the shaft of the rotating blade 73 is collinear with the central axis of the working adjusting hole, and when the central line of the two convex cambered surfaces of the rotating blade 73 is collinear with the central axis of the gas circulation hole 30 (the central axis of the gas circulation hole 30 is collinear with the central axis of the straight flow adjusting rod 74, the central axis of the flow adjusting rod 74 is collinear with the central axis of the working adjusting hole), the flow of the gas in the gas flow hole 30 is the maximum gas quantity of the stove, so that when the handle is rotated by 90 degrees, the central line of the two convex cambered surfaces of the rotating blade 73 can be collinear with the central axis of the gas flow hole 30, so that the gas output quantity of the stove is maximum. That is, in the process of adjusting the gas output quantity of the stove, the rotating angle of the handle is 0-90 degrees, so that the adjusting range of the stove is expanded to 90 degrees, and the problem that small fire is difficult to control is solved.

Meanwhile, since the distance H0 between two opposite planes of the rotating blades 73 distributed along the length direction of the rotating blade shaft 731 is equal to the aperture H of the gas flow hole 30, gaps are prevented from being formed between both ends of the rotating blades 73 along the length direction of the rotating blade shaft 731 and the inner wall of the gas flow hole 30, thereby improving the sealing property when the rotating blades 73 block the gas flow hole 30.

In order to further optimize the above solution, the air flap 8 comprises:

the side wall of the rotating drum 81 is provided with a square first air inlet 811, one end of the rotating drum 81 is a closed end, the other end of the rotating drum 81 is provided with a round first air outlet 812, and the closed end of the rotating drum 81 is fixed with a rotating drum shaft 813;

a square second air inlet 821 is formed in the side wall of the outer cylinder 82, meanwhile, one end of the outer cylinder 82 is a closed end, a round second air outlet 822 is formed in the other end of the outer cylinder 82, and a mounting hole 820 is formed in the closed end of the outer cylinder 82; the outer cylinder 82 is sleeved on the rotary cylinder 81, the rotary cylinder shaft 813 penetrates out of the mounting hole 820 and is connected with the linkage structure 80, the rotary cylinder 81 can rotate in the outer cylinder 82, and the linkage structure 80 sequentially penetrates through the linkage mounting through hole 104 and the second mounting through hole 204 to be connected with the valve ball 3, so that the valve ball 3 and the rotary cylinder 81 synchronously rotate through the linkage structure 80.

The first air inlet 811 arranged on the rotary drum 81 of the air valve 8 and the second air inlet 821 arranged on the outer drum 82 are both square, and the first air outlet 812 arranged on the rotary drum 81 of the valve 8 and the second air outlet 822 arranged on the outer drum 82 are both circular, so that the linear output of the air valve 8 can be ensured, and after the air valve 8 and the stove regulating valve provided with the linear air limiting structure 7 are connected through the linkage structure 80, the problem that the existing air-air linkage valve cannot be regulated in proportion is solved, and the problem that stoves with various powers are not matched with various air sources and various pressures is solved.

The stove comprises any stove regulating valve, so that the stove can achieve the purposes of reducing cost, being convenient to install and accurate in regulation, and realizing air-air linkage and proportional regulation.

Example 1:

as shown in fig. 1-3, the present disclosure provides a ball valve with a double seal, comprising: the valve comprises a valve body 1, a valve ball 3, a valve rod 4, a sealing ring 11 and a handle 9, wherein a ball valve cavity 10 is defined in the valve body 1, and a ball valve cavity air inlet 101 and a ball valve cavity air outlet 102 which are communicated with the ball valve cavity 10 and are coaxially arranged are respectively communicated on two opposite side walls of the valve body 1; a valve rod mounting through hole 103 communicated with the ball valve cavity 10 is formed in the side wall of the valve body 1, and the central axis of the valve rod mounting through hole 103 is perpendicular to a connecting line between a ball valve cavity air inlet 101 and a ball valve cavity air outlet 102; the valve ball 3 is rotatably connected in the ball valve cavity 10, and a gas circulation hole 30 is formed in the valve ball 3 along the diameter direction; one end of the valve rod 4 is positioned outside the valve body 1, the other end of the valve rod 4 penetrates through the valve rod mounting through hole 103 and is fixed on the valve ball 3, and the valve rod 4 drives the valve ball 3 to rotate; sealing washer 11 is two, and the one-to-one is close to air inlet 101 and ball valve chamber gas outlet 102 sealing connection between valve ball 3 and valve body 1, still includes: the seal 2, the seal 2 inlays to be established between the outer wall of valve ball 3 and the inner wall of valve body (1), and the seal 2 is located between two sealing washer 11 simultaneously, and two sealing washer 11 of the sealed contact of 2 relative both ends one-to-one to when valve rod 4 is closed, the orbit when seal 2 wraps up gas circulation hole 30 and its switch completely, flow through between the outer wall of preventing gas circulation hole 30 follow valve ball 3 and the inner wall of valve body 1.

Wherein, the sealing body 2 includes: sealing member 21, sealing member 21 is the semicircle column shape, and seted up hemisphere face seal groove 200 on sealing member 21's the rectangle plane, the periphery of hemisphere face seal groove 200's inner wall is formed with the outside bellied sealing rib 209 of hemisphere face seal groove 200, the both ends that sealing member 21 is relative simultaneously form "U" font sealed face, hemisphere face seal groove 200's interior concave surface corresponds the rotation plane towards valve ball 3, and valve ball 3's outer wall and sealing rib 209 contact or with the inner wall contact of whole hemisphere face seal groove 200, sealing member 21's arc lateral surface and the inner wall contact of valve body 1, two sealing washer 11 of two "U" font sealed face one-to-one sealed contacts.

The working principle is as follows:

the handle 9 is rotated, the handle 9 drives the valve rod 4 to rotate, the valve rod 4 drives the valve ball 3 to rotate in the ball valve cavity 10, and the sealing body 2 can always seal and prevent gas from flowing in a gap between the outer wall of the valve ball 3 and the ball valve cavity 10 in the process of flowing between the rotary sealing ball cavity gas inlet 101, the gas flow hole 30 and the ball valve cavity gas outlet 102 of the sealing valve ball 3 (if the sealing body 2 is not arranged, the gas enters the gap between the outer wall of the valve ball 3 and the ball valve cavity 10 from the port of the gas flow hole 30 and flows out through the gap between the outer wall of the valve ball 3 and the ball valve cavity 10), so that the valve only has a flow path of the gas flow hole 30, which is the basis for the next application as a flow limiting valve, until the valve ball 3 rotates until the valve ball 3 completely seals the flow of the gas among the ball valve cavity gas inlet 101, the gas flow hole 30 and the ball valve cavity gas outlet 102, the port of the gas passing hole 30 is completely sealed by the sealing body 2, and conversely, when the valve ball 3 is rotated to make the central axis of the gas passing hole 30 collinear with the central connecting line of the ball chamber inlet 101 and the ball chamber outlet 102, the sealing body 2 no longer seals the port of the gas passing hole 30, and at this time, the amount of gas passing through the gas passing hole 30 is the maximum passing amount.

Meanwhile, the two sealing rings 11 of the utility model are correspondingly close to the air inlet 101 and the ball valve cavity air outlet 102 one by one and are hermetically connected between the valve ball 3 and the valve body 1, so that the utility model can seal the sealing body 2 and the sealing rings 11 together, thereby improving the sealing surface for gas, preventing the gas from escaping, and further improving the sealing performance of the utility model.

The sealing principle of the sealing body 2 is as follows:

the valve ball 3 rotates in the hemispherical seal groove 200, the seal rib 209 can always seal a gap between the outer wall of the valve ball 3 and the inner wall of the valve body 1, only under the condition that the part of the outer wall of the valve ball 3 can be contacted with the seal rib 209 of the hemispherical seal groove 200, the contact area between the valve ball 3 and the inner wall of the hemispherical seal groove 200 is small, so that the valve ball 3 can easily and flexibly rotate in a ball valve cavity; in the case that all of the outer wall of the valve ball 3 can be in contact with the inner wall of the hemispherical seal groove 200 (including all of the seal ribs 209), the contact area between the valve ball 3 and the inner wall of the hemispherical seal groove 200 is large, so that the valve ball 3 is difficult to rotate in the ball valve cavity;

meanwhile, the arc-shaped outer side surface of the sealing part 21 is in contact with the inner wall of the valve body 1, and the two U-shaped sealing surfaces are in one-to-one corresponding sealing contact with the two sealing rings 11, so that the sealing performance of the valve is further improved.

Example 2:

as shown in fig. 4, on the basis of embodiment 1, one or two sealing members 21 are spliced or integrally connected together through a connecting plate 20, a first mounting through hole 203 and a second mounting through hole 204 are formed between the two sealing members 21 and are distributed oppositely, and the valve rod 4 is connected to the valve ball 3 through the first mounting through hole 203; the inner concave surfaces of the hemispherical seal grooves 200 of the two seal parts 21 correspond to the rotating planes facing the valve ball 3, the arc outer side surfaces of the two seal parts 21 contact with the inner wall of the valve body 1, and the two U-shaped seal surfaces of each seal part 21 are in one-to-one corresponding sealing contact with the two seal rings 11.

Example 3:

as shown in fig. 1-6, on the basis of embodiment 1 or 2, the fire-fighting gas-limiting structure further includes a main fire-limiting gas structure 5, and the main fire-limiting gas structure 5 includes:

a disc 51, the disc 51 is vertically arranged in the gas circulation hole 30, and the periphery of the disc 51 is abutted against the inner wall of the gas circulation hole 30; meanwhile, the shape of the disc 51 is matched with that of the gas circulation hole 30;

The working principle is as follows:

the handle 9 is rotated, the handle 9 drives the valve rod 4 to rotate, the valve rod 4 drives the valve ball 3 to rotate, at the moment, no matter the handle 9 is opened from any position between 0 degree and 90 degrees, the sealing body 2 always blocks the part, inside the valve cavity, of the through hole 30 in the valve ball 3 on two side surfaces to prevent gas from flowing through the space between the outer wall of the valve ball 3 and the inner wall of the valve body 1, at the moment, the gas only remains a passage of the gas through hole 30, preparation is provided for next step of adopting the butterfly sheet 51 to limit the main fire flow, at the moment, if the gas in the gas through hole 30 of the valve ball 3 needs to be further microscopically regulated and controlled, a common tool such as a screwdriver is inserted on the disc regulating rod 52 through the work regulating hole (one end, close to the handle 9, of the disc regulating rod 52 is provided with a slot, the common tool can be inserted in the slot of the disc regulating rod 52 to prevent the common tool from being separated in the process of rotating the disc regulating rod 52) 52 rotates, so that the disc adjusting rod 52 can drive the disc 51 to rotate, and the rotating angle of the disc 51 is adjusted, so that the size of the gas flow in the gas circulation hole 30 can be adjusted, and the maximum gas supply quantity of the stove is set, so that one valve plays the role of two valves, and it is worth explaining that the adjusting rod 52 only adopts different gases according to the stove when the stove is installed, the different pressures and different powers are adjusted once, and no matter the handle 9 is opened to any position, the flow which exceeds the limit of the disc 51 flows out; the periphery of the disc 51 of the present invention is abutted against two opposite inner walls of the gas flow hole 30 to prevent a gap between the disc 51 and the inner wall of the gas flow hole 30, so that when the disc 51 is in a direction perpendicular to the axis of the gas flow hole 30, i.e. when the disc 51 is in a state of closing the gas flow, the regulation and control accuracy is further improved.

Example 4; as shown in fig. 1 to 7, unlike in example 3: the main fire gas limiting structure 5 in the embodiment 3 is replaced by the fire gas limiting structure 6, and the fire gas limiting structure 6 is positioned in the gas circulation hole 30 through the working adjusting hole so as to adjust the flow rate of gas in the gas circulation hole 30;

further, the flame gas confining structure 6 includes: a valve needle 61 and a limit groove 62;

the valve needle 61 is positioned in the working adjusting hole and is spirally and rotatably connected with the inner wall of the working adjusting hole so as to be capable of moving into the gas circulation hole 30 along the direction vertical to the gas circulation and reciprocating in the gas circulation hole 30 so as to adjust the flow rate of the gas in the gas circulation hole 30;

the limiting groove 62 is formed in the inner wall of the gas circulation hole 30 far away from the work adjusting hole and is collinear with the axis of the valve needle 61, meanwhile, the notch of the limiting groove 62 faces the valve needle 61, and the valve needle 61 is correspondingly clamped with the limiting groove 62.

The working principle is as follows:

the handle 9 is rotated, the handle 9 drives the valve rod 4 to rotate, the valve rod 4 drives the valve ball 3 to rotate, at the moment, no matter the handle 9 is opened from 0 degree to any position between 90 degrees, the sealing body 2 always blocks the part, inside the valve cavity, of the circulation hole 30 on the valve ball 3 on two side faces so as to prevent gas from flowing between the outer wall of the valve ball 3 and the inner wall of the valve body 1, at the moment, the gas only remains a passage of the gas circulation hole 30, and preparation is made for limiting the main fire flow by adopting the butterfly sheet 51 in the next step;

if the gas in the gas flow hole 30 of the valve ball 3 needs to be further micro-controlled, the valve needle 61 is rotated by a common tool such as a screwdriver through a working adjustment hole and inserted into the valve needle 61 (one end of the valve needle 61 close to the handle 9 is provided with a slot, the common tool can be inserted into the slot of the valve needle 61 to prevent the common tool from being separated in the process of rotating the valve needle 61), the valve needle 61 can be screwed into the gas flow hole 30, the gas flow in the gas flow hole 30 is adjusted by the length of the valve needle 61 extending into the gas flow hole, and the valve needle 61 is embedded and clamped in the limit groove 62 when the length of the valve needle 61 extending into the gas flow hole 30 is the maximum, so as to close the gas flow in the gas flow hole 30 and improve the tightness between the valve needle 61 and the limit groove 62, at this time, even when the handle 9 of the fire ball valve is opened to the maximum 90 degrees, the valve needle 61 limits gas which does not flow into the furnace end beyond the limit of the valve needle 61, and the valve needle functions as a flow limiting valve.

Example 5: as in fig. 1-6 and fig. 9-11, on the basis of embodiment 1 or 2: a linkage mounting through hole 104 is formed in the side wall of the valve body 1 opposite to the valve rod mounting through hole 103, the valve rod mounting through hole 103 and the linkage mounting through hole 104 are collinear, a linkage structure 80 is connected to the valve ball 3, and the linkage structure 80 is connected with an air valve 8 through the linkage mounting through hole 104;

meanwhile, the utility model also comprises: the linear gas limiting structure 7 is characterized in that a work adjusting hole communicated with the gas circulation hole 30 penetrates through the valve rod 4 along the axis direction of the valve rod, the linear gas limiting structure 7 is arranged in the gas circulation hole 30 through the work adjusting hole to adjust the flow rate of gas in the gas circulation hole 30, and the cross section of the gas circulation hole 30 is a square hole.

The linear gas confinement structure 7 includes: a toggle member 71, a rotary vane 73, a flow rate adjusting lever 74 and a return elastic member 75;

the stirring piece 71 is positioned in the gas circulation hole 30, the length direction of the stirring piece extends along the circulation direction of gas in the gas circulation hole 30, meanwhile, two ends of the stirring piece 71 are respectively arranged at two sides of the central axis of the working adjusting hole, one end of the stirring piece 71 is hinged on the inner wall of one side of the gas circulation hole 30 close to the working adjusting hole, and the other end is a stirring end;

the rotating blade 73 is a hexahedral structure formed by integrally connecting four planes which are opposite in pairs and are in parallel symmetry and two symmetrical convex cambered surfaces, and the connection of the two pairs of opposite planes is vertical; the rotating blade 73 is connected with and penetrated through a shaft hole 730 along the center of one pair of planes, a rotating blade shaft 731 is rotationally connected in the shaft hole 730, the rotating blade shaft 731 is perpendicular to the gas flowing direction in the gas flowing hole 30 and fixed in the middle of the opposite inner wall of the gas flowing hole 30, the rotating blade shaft 731 is perpendicular to the axis of the valve rod 4, the center distance between two convex arc surfaces is equal to the diameter of the valve ball 3, and the distance H0 between two opposite planes in the rotating blade 73 distributed along the length direction of the rotating blade shaft 731 is equal to the aperture H of the gas flowing hole 30;

the flow regulating rod 74 is positioned in the working regulating hole and is spirally and rotatably connected with the inner wall of the working regulating hole so as to move into the gas circulation hole 30 along the direction vertical to the gas circulation and can reciprocate in the gas circulation hole 30 to push the stirring piece 71 to rotate, and the stirring end of the stirring piece 71 can move to abut against the rotating blade 73 so as to drive the rotating blade 73 to rotate to regulate the flow of the gas in the gas circulation hole 30; meanwhile, when the valve rod 4 is opened and rotated by ninety degrees, the central line of the two convex cambered surfaces is collinear with the central axis of the gas through hole 30, and the flow of the gas in the gas through hole 30 is the maximum gas quantity of the stove;

the inner wall of one side of the gas circulation hole 30 far away from the work adjusting hole is provided with an installation groove, the installation groove is positioned on the other side of the central axis of the work adjusting hole opposite to the hinged end of the stirring piece 71, one end of the reset elastic piece 75 is embedded and fixed in the installation groove, and the other end of the reset elastic piece can be abutted against the rotating blade 73 to drive the rotating blade 73 to reset.

The working principle is as follows:

if the gas in the gas flow hole 30 of the valve ball 3 needs to be further micro-regulated, the flow regulating rod 74 is rotated to the gas flow hole 30 to press the toggle member 71 downwards, the toggle member 71 rotates around the hinged end thereof, so that the rotating blade 73 is driven to rotate, and the gas flow in the gas flow hole 30 of the valve body 1 is regulated through the rotating angle of the rotating blade 73.

And since the cross section of the gas flow hole 30 is a square hole, and the surface of the gas flowing through the rotating vane 73 is a plane, so that the gas output from the gas flow hole 30 is ensured to be linear output in the process of rotating the rotating vane 73, meanwhile, as the rotating blade shaft 731 is fixed at the middle part of the gas flow hole 30 relative to the inner wall in a way of being vertical to the gas flow direction in the gas flow hole 30, and the rotating blade shaft 731 is vertical to the axis of the valve rod 4, the central axis of the gas flow hole 30 is perpendicular to the central axis of the flow adjusting rod 74, the central axis of the flow adjusting rod 74 is collinear with the central axis of the working adjusting hole, the flow rate of the gas in the gas flow hole 30 is the maximum gas amount of the furnace, when the handle is rotated ninety degrees, the center line of the two convex cambered surfaces of the rotating blade 73 can be collinear with the central axis of the gas through hole 30, so that the gas outlet of the utility model is maximum. In other words, in the process of adjusting the gas output quantity of the stove, the rotating angle of the handle is zero-ninety degrees, so that the adjusting range of the stove is expanded to ninety degrees, and the problem that small fire is difficult to control is solved. (existing ball valves, in actual use, all have the following disadvantages, firstly, the maximum flow capacity of the valve is inconsistent with the maximum demand flow capacity of the equipment, because the existing valve caliber (flow capacity) is produced according to the interface standard, the maximum demand flow capacity of the equipment using the valve is very different, so that a user must select the valve with the flow capacity larger than the actual flow capacity when selecting the valve, which is not suitable for the equipment which does not permit the over-supply, especially for the equipment which operates frequently, such as a stove, the excessive gas outflow is not careless, and the danger and the accident are easily caused, therefore, a flow limiting valve has to be arranged on the gas equipment again to ensure that the over-supply condition can not happen, the cost is increased, the space is occupied, the leakage hidden danger caused by the connection between the valves is increased, in addition, the actual flow capacity of the valve is reduced, the flow is larger than the required flow of the equipment, so that the adjusting angle of the valve is small and is not easy to control, for example, patent CN201710988070, the publication date is 6 and 12 in 2018, and the name is: an air-gas linkage valve is characterized in that a valve ball is provided with a circular gas through hole, and if a quartering ball is adopted and is relatively small in the industry, the maximum flow of the quartering ball is 176 square millimeters when the quartering ball is opened to ninety degrees, but the maximum flow of a nozzle of a common liquefied gas stove is not more than 30 square millimeters, and the maximum flow is calculated according to 50 square millimeters. That is, the air valve in the existing air-air linkage valve theoretically reaches the maximum air supply amount of the stove when the valve ball is opened to about 30 degrees, and then the air limiting valve starts to limit the supply of the fuel gas. In other words, the adjusting range of the existing air valve can only be adjusted within 30 degrees of the opening of the handle, and the valve ball can be opened to any angle above 30 degrees when a big fire is opened, so that the air-operated linkage valve in the prior art has great difficulty in adjusting the small fire);

when the rotary vane 73 rotates to abut against the inner wall of the gas flow hole 30 to form a state of closing the gas flow, the flow rate adjusting lever 74 is rotated in the opposite direction, so that the flow rate adjusting lever 74 moves upward to release the pushing end of the pushing member 71 from abutting against the rotary vane 73, and the rotary vane 73 is reset by the elastic force of the reset elastic member 75.

Example 6:

as shown in fig. 1 to 5 and fig. 8 to 13, in embodiment 5, the blast gate 8 includes: a drum 81 and an outer cylinder 82; a square first air inlet 811 is formed in the side wall of the rotary drum 81, a circular first air outlet 812 is formed in the other end of the outer drum 82, and a rotary drum shaft 813 is fixed to the closed end of the rotary drum 81; a square second air inlet 821 is formed in the side wall of the outer cylinder 82, meanwhile, one end of the outer cylinder 82 is a closed end, a round second air outlet 822 is formed in the other end of the outer cylinder 82, and a mounting hole 820 is formed in the closed end of the outer cylinder 82; the outer cylinder 82 is sleeved on the rotary cylinder 81, the rotary cylinder shaft 813 penetrates out of the mounting hole 820 and is connected with the linkage structure 80, the rotary cylinder 81 can rotate in the outer cylinder 82, and the linkage structure 80 sequentially penetrates through the linkage mounting through hole 104 and the second mounting through hole 204 to be connected with the valve ball 3, so that the valve ball 3 and the rotary cylinder 81 synchronously rotate through the linkage structure 80.

The operating principle is as follows:

when the valve rod 4 is driven to rotate by rotating the handle 9 to drive the valve ball 3 to rotate, the linkage structure 80 drives the rotary drum 81 in the air valve 8 to rotate simultaneously, so that the overlapping area between the square first air inlet 811 and the square second air inlet 821 can be adjusted, and the flow output by the air in the air valve 8 can be adjusted;

in addition, because the first air inlet and the first air outlet formed on the rotary drum 81 of the air valve 8 are both square, and the second air inlet and the second air outlet formed on the outer drum 82 are both circular, the output air of the air valve 8 of the utility model can be ensured to be adjustable and controllable linear output, and because the stove regulating valve with the linear air limiting structure 7 of the utility model is also adjustable and controllable linear output, after the air valve 8 of the utility model is connected with the stove regulating valve provided with the linear air limiting structure 7 of the utility model through the linkage structure 80, the problem that the existing air-air linkage valve cannot be adjusted in proportion is solved, and the problem that stoves with various powers are not matched with various air sources and various pressures is solved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ball valve with dual seals comprising: the ball valve comprises a valve body (1), a valve ball (3), a valve rod (4) and a sealing ring (11), wherein a ball valve cavity (10) is defined in the valve body (1), and a ball valve cavity air inlet (101) and a ball valve cavity air outlet (102) which are communicated with the ball valve cavity (10) and are coaxially arranged are respectively communicated with two opposite side walls of the valve body (1); a valve rod mounting through hole (103) communicated with the ball valve cavity (10) is formed in the side wall of the valve body (1), and the central axis of the valve rod mounting through hole (103) is perpendicular to the connecting line between the ball valve cavity air inlet (101) and the ball valve cavity air outlet (102);

the valve ball (3) is rotatably connected in the ball valve cavity (10), and a gas circulation hole (30) is formed in the valve ball (3) along the diameter direction of the valve ball; one end of the valve rod (4) is positioned outside the valve body (1), the other end of the valve rod (4) penetrates through the valve rod mounting through hole (103) and is fixed on the valve ball (3), and the valve rod (4) drives the valve ball (3) to rotate; sealing washer (11) are two, and the one-to-one correspondence is close to air inlet (101) with ball valve chamber gas outlet (102) sealing connection be in valve ball (3) with between valve body (1), its characterized in that still includes: the sealing body (2), the sealing body (2) inlay and establish the outer wall of valve ball (3) with between the inner wall of valve body (1), simultaneously the sealing body (2) are located two between sealing washer (11), just sealing body (2) relative both ends one-to-one sealing contact is two sealing washer (11), and when valve rod (4) were closed, sealing body (2) wrapped up completely the operation orbit during gas circulation hole (30) and its switch, in order to prevent gas to walk around gas circulation hole (30) are followed the outer wall of valve ball (3) with flow through between the inner wall of valve body (1).

2. A ball valve with double seal according to claim 1, characterized in that said sealing body (2) comprises: the sealing component (21), the sealing component (21) is semi-cylindrical, a semi-spherical sealing groove (200) is arranged on the rectangular plane of the sealing component (21), a sealing rib (209) protruding towards the outside of the hemispherical seal groove (200) is formed on the periphery of the inner wall of the hemispherical seal groove (200), meanwhile, two opposite ends of the sealing component (21) form a U-shaped sealing surface, the inner concave surface of the hemispherical sealing groove (200) correspondingly faces to the rotating plane of the valve ball (3), and the outer wall of the valve ball (3) is contacted with the sealing rib (209) or the inner wall of the whole hemispherical sealing groove (200), the arc-shaped outer side surface of the sealing component (21) is in contact with the inner wall of the valve body (1), and the two U-shaped sealing surfaces are in one-to-one sealing contact with the two sealing rings (11).

3. The ball valve with double seals according to claim 2, wherein the sealing members (21) are one or two, spliced or integrally connected together by a connecting plate (20), while the two sealing members (21) form a first mounting through hole (203) and a second mounting through hole (204) which are oppositely distributed, and the valve stem (4) is connected to the valve ball (3) through the first mounting through hole (203); the inner concave surfaces of the hemispherical seal grooves (200) of the two sealing components (21) face towards the rotating plane of the valve ball (3) correspondingly, the arc-shaped outer side surfaces of the two sealing components (21) are in contact with the inner wall of the valve body (1), and each of the two U-shaped sealing surfaces of the two sealing components (21) is in one-to-one sealing contact with the two sealing rings (11).

4. A stove adjusting valve comprising a ball valve with double sealing as claimed in any one of claims 1 to 3, further comprising: the valve rod (4) penetrates through a working adjusting hole communicated with the gas circulation hole (30) along the axial direction of the valve rod; the main fire limiting structure (5) comprises:

a disc (51), wherein the disc (51) is vertically arranged in the gas circulation hole (30), and the periphery of the disc (51) is correspondingly abutted against the inner wall of the gas circulation hole (30);

the disc adjusting rod (52) is positioned in the working adjusting hole and is rotationally connected with the inner wall of the working adjusting hole; meanwhile, one end of the disc adjusting rod (52) enters the gas circulation hole (30) through the working adjusting hole to be connected with the disc (51), so that the disc (51) is driven to rotate in the gas circulation hole (30) to adjust the flow rate of the gas in the gas circulation hole (30).

5. A stove adjusting valve comprising a ball valve with double sealing as claimed in any one of claims 1 to 3, further comprising: the fire species gas limiting structure (6), the valve rod (4) is penetrated with a work adjusting hole communicated with the gas circulation hole (30) along the axial direction: the flame gas limiting structure (6) comprises:

a valve needle (61), wherein the valve needle (61) is positioned in the working adjusting hole, is spirally and rotatably connected with the inner wall of the working adjusting hole, can move into the gas circulation hole (30) along the direction vertical to the gas circulation direction, and can reciprocate in the gas circulation hole (30) to adjust the flow rate of the gas in the gas circulation hole (30);

spacing groove (62), set up in spacing groove (62) gas circulation hole (30) are kept away from on the inner wall of work regulation hole, and with the axis collineation of needle (61), simultaneously the notch orientation of spacing groove (62) needle (61), needle (61) with spacing groove (62) correspond the joint.

6. A stove adjusting valve, comprising a double-sealed ball valve as claimed in claim 3, wherein a linkage mounting through hole (104) is opened on the side wall of the valve body (1) opposite to the valve rod mounting through hole (103), a linkage structure (80) is connected to the valve ball (3), and the linkage structure (80) is connected to the air valve (8) through the linkage mounting through hole (104).

7. The oven adjustment valve of claim 6, further comprising: the linear gas limiting structure (7) penetrates through a working adjusting hole communicated with the gas circulation hole (30) in the axis direction of the valve rod (4), the linear gas limiting structure (7) is arranged in the gas circulation hole (30) through the working adjusting hole so as to adjust the flow rate of gas in the gas circulation hole (30), and the cross section of the gas circulation hole (30) is a square hole.

8. The oven regulating valve of claim 7, characterized in that the linear gas-limiting structure (7) comprises:

the stirring piece (71) is positioned in the gas circulation hole (30), the length direction of the stirring piece (71) extends along the circulation direction of gas in the gas circulation hole (30), meanwhile, two ends of the stirring piece (71) are respectively arranged on two sides of the central axis of the working adjusting hole, one end of the stirring piece (71) is hinged to the inner wall of one side of the gas circulation hole (30) close to the working adjusting hole, and the other end of the stirring piece (71) is a stirring end;

the rotating blade (73) is of a hexahedral structure formed by integrally connecting four planes which are opposite in pairs and are in parallel symmetry and two symmetrical convex cambered surfaces, and the connection of the two pairs of opposite planes is vertical; the rotating blade (73) is connected with a through shaft hole (730) along the center of one pair of planes, a rotating blade shaft (731) is rotationally connected in the shaft hole (730), the rotating blade shaft (731) is perpendicular to the gas flow direction in the gas flow hole (30) and fixed in the middle of the opposite inner wall of the gas flow hole (30), meanwhile, the rotating blade shaft (731) is perpendicular to the axis of the valve rod (4), the center distance between the two outward convex cambered surfaces is equal to the diameter of the valve ball (3), and the distance H0 between the two opposite planes in the rotating blade (73) distributed along the length direction of the rotating blade shaft (731) is equal to the aperture H of the gas flow hole (30);

the flow regulating rod (74) is positioned in the working regulating hole and is spirally and rotatably connected with the inner wall of the working regulating hole so as to move into the gas circulation hole (30) along the direction vertical to the gas circulation direction and reciprocate in the gas circulation hole (30) to push the stirring piece (71) to rotate, and the stirring end of the stirring piece (71) can move to abut against the rotating blade (73) so as to drive the rotating blade (73) to rotate to regulate the flow of the gas in the gas circulation hole (30); meanwhile, when the valve rod (4) is opened and rotated by ninety degrees, the central line of the two convex cambered surfaces is collinear with the central axis of the gas through hole (30), and the flow of the gas in the gas through hole (30) is the maximum gas quantity of a stove;

elastic component (75) resets, keep away from gas circulation hole (30) the mounting groove has been seted up to one side inner wall of work regulation hole, just the mounting groove be located with it is relative to dial piece (71) hinged end work regulation hole axis opposite side, the one end of elastic component (75) resets is inlayed and is established and fix in the mounting groove, but the other end butt is in order to drive on commentaries on classics leaf (73) reset.

9. Stove regulating valve according to claim 8, characterized in that the air valve (8) comprises:

the side wall of the rotating drum (81) is provided with a square first air inlet (811), one end of the rotating drum (81) is a closed end, the other end of the rotating drum is provided with a round first air outlet (812), and a rotating drum shaft (813) is fixed at the closed end of the rotating drum (81);

the side wall of the outer cylinder (82) is provided with a square second air inlet (821), one end of the outer cylinder (82) is a closed end, the other end of the outer cylinder (82) is provided with a round second air outlet (822), and the closed end of the outer cylinder (82) is provided with a mounting hole (820); the outer cylinder (82) is sleeved on the rotary cylinder (81), the rotary cylinder shaft (813) penetrates out of the mounting hole (820) and is connected with a linkage structure (80), the rotary cylinder (81) can rotate in the outer cylinder (82), and the linkage structure (80) sequentially penetrates through the linkage mounting through hole (104) and the second mounting through hole (204) to be connected with the valve ball (3) so that the valve ball (3) and the rotary cylinder (81) can synchronously rotate through the linkage structure (80).

10. A stove, comprising: there is a stove adjusting valve, which is the stove adjusting valve of any one of claims 4-9.