CN201246488Y

CN201246488Y - Gas valve with improved structure valve core

Info

Publication number: CN201246488Y
Application number: CNU2008200519742U
Authority: CN
Inventors: 谢启标; 萧瑞源
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2009-05-27
Anticipated expiration: 2018-08-07

Abstract

The utility model discloses a gas valve with an improved valve core structure, comprising a valve body, a valve seat, a hollow rotating shaft and a valve core which is composed of an outer valve core and an inner valve core. The outer valve core is equipped with a big fire gas inlet and a small fire gas inlet, the inner valve core is equipped with two or more flow limiting holes corresponding to varieties of gases, further during gas exchanging, the inner valve core is directly rotated from inside of a through hole of the rotating shaft by exchanging the corresponding nozzle and using tools as a screwdriver and the like, and the corresponding flow limiting holes on the inner valve core are communicated with the small fire gas inlet on the outer valve core, thereby realizing the flow quantity of the hard fire being limited by the nozzle diameter and the flow quantity of the small fire being limited by the corresponding flow holes on the inner valve core. The gas valve with an improved valve core structure is convenient in operation, and safe and reliable in use, can be widely adaptable to gas stoves, gas ovens, gas heater and the like, and can achieve the purpose of stably burning with two gases by improving the traditional gas valve in the way of exchanging the valve core, the rotating shaft and the nozzle.

Description

The gas valve of valve core structure improvement

Technical field

The utility model relates to a kind of gas valve, particularly a kind of gas valve of valve core structure improvement.

Background technique

Because different combustion gas has different characteristics, parameters such as its heat load, combustion potential, Weber index all have difference, and under the identical situation of heating value, the air inflow of different combustion gas differs greatly, thereby make when multiple combustion gas is used on same valve, all be difficult to the firing effect that reaches desirable.Because traditional valve can only be used for a kind of source of the gas, changes source of the gas if desired, then must change valve again, to reach the purpose that makes the smooth combustion on same burner of another kind of source of the gas.Yet such operation can make manufacturer and user feel very inconvenience, causes the significant wastage of resource simultaneously, if changed voluntarily by the user, has certain potential safety hazard again, causes the generation of catastrophic failure easily.

Summary of the invention

In order to overcome the deficiencies in the prior art, the gas valve that the utility model provides a kind of valve core structure simple in structure, easy to use to improve.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of gas valve of valve core structure improvement, comprise valve body and valve seat, in the cavity that constitutes by described valve body and valve seat spool is installed, described valve body is provided with the intake duct and the air outlet channel that is used to be connected burner that is used to connect source of the gas, described air outlet channel end is equipped with nozzle, described spool comprises outer spool and is installed on the interior inner spool of outer spool, one end of described outer spool is connected with the rotating shaft that interts valve seat, one end of the close rotating shaft of described inner spool is provided with regulates mouth, and described rotating shaft is provided with and is communicated with the through hole of regulating mouth; Described inner spool is connected with the limit stoper that limits its axial motion; Described outer spool is provided with the big fire inlet hole and the low baking temperature inlet hole that can be communicated with air outlet channel and intake duct, and described inner spool is provided with two and the above flow restriction hole that is communicated with air outlet channel and low baking temperature inlet hole of corresponding different combustion gas respectively; Wherein, the aperture of described big fire inlet hole and low baking temperature inlet hole is respectively more than or equal to the aperture in design maximum flow nozzle and design maximum flow flow restriction hole.

As further improvement of the utility model, described inner spool is provided with four flow restriction holes that are positioned on the same circumference, are mutually 90 degree distributions; Described limit stoper comprise the annular stop groove that is arranged at the inner spool surface and along outer spool radially be provided with, be communicated with the pin-and-hole of annular limited impression and insert in the pin-and-hole, front end is embedded in the interior position limit pin of annular stop groove; The surface of described outer spool is provided with draw-in groove along the circumferential surface of pin-and-hole, and snap ring is installed in the draw-in groove, and the other end of described position limit pin leans in the snap ring inboard.

Further improve as of the present utility model, described inner spool is provided with two flow restriction holes that are positioned on the same circumference, become 90 degree angles to distribute; Described limit stoper comprises the blind hole that is arranged on the inner spool and places a groove and an end on the outer spool to insert the position limit pin that blind hole is interior, the other end is positioned at groove, rotate inner spool, the two ends of groove are blocked the corresponding low baking temperature inlet hole of position limit pin respectively and are communicated with two flow restriction holes respectively.

The beneficial effects of the utility model are: spool of the present utility model is made up of outer spool and the inner spool that is installed in the outer spool, inner spool is connected with the limit stoper that limits its axial motion, inner spool is provided with two and above flow restriction hole of corresponding different combustion gas respectively, instruments such as the nozzle of replacing correspondence and use screw-driver directly rotate inner spool from the through hole of rotating shaft when the conversion combustion gas, make the connection of the low baking temperature inlet hole on the corresponding flow limiting holes and outer spool on the inner spool, because the aperture of big fire inlet hole and low baking temperature inlet hole is respectively more than or equal to the aperture in design maximum flow nozzle and design maximum flow flow restriction hole, the final gas flow that realizes big fire is limited by the aperture of nozzle, the gas flow of low baking temperature is then limited by corresponding flow hole on the inner spool, easy to operate, safe and reliable, can be widely used in gas range, fuel baking oven, gas water-heater etc., also can be by changing spool, the mode of rotating shaft and nozzle is transformed traditional gas valve, makes it satisfy the purpose of two kinds of source of the gas smooth combustions.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an overall structure schematic representation of the present utility model;

Fig. 2 is 360 degree rotatable gas valve generalized sections;

Fig. 3 is the inner spool schematic representation of 90 degree rotations;

Fig. 4 is the outer spool schematic representation of 360 degree rotations;

Fig. 5 is the spool exploded view of 360 degree rotations;

Fig. 6 is the sectional drawing of 360 degree rotary spools;

Fig. 7 is 90 degree rotary spool exploded views;

Fig. 8 is 90 degree rotary spool sectional drawings;

Fig. 9 is the sectional view of the A-A direction shown in Fig. 6;

Figure 10 is the sectional view of the B-B direction shown in Fig. 8;

Figure 11 is 90 degree outer spool of rotation and connecting sheet scheme of installations;

Figure 12 is the valve seat schematic representation.

Embodiment

Referring to figs. 1 through Figure 12, a kind of gas valve of valve core structure improvement, comprise valve body 1 and valve seat 2, in the cavity that constitutes by described valve body 1 and valve seat 2 spool is installed, described valve body 1 is provided with the intake duct 5 and the air outlet channel 23 that is used to be connected burner that is used to connect source of the gas, and air outlet channel 23 ends are equipped with nozzle 4.Described spool comprises outer spool 14 and the inner spool 12 that is installed in the outer spool 14, one end of described outer spool 14 is connected with the rotating shaft 3 that interts valve seat 2, the valve core spring 7 that rotating shaft is resetted is installed between described outer spool 14 and the rotating shaft 3, described inner spool 12 is provided with adjusting mouth 24 near an end of rotating shaft, this adjusting mouth 24 can be flat mouth groove or the cross recess corresponding to utility screwdriver, described rotating shaft 3 is provided with and is communicated with the through hole 6 of regulating mouth 24, can pass through hole 6 during adjusting with the screw-driver of correspondence and directly rotate inner spools 12.Described inner spool 12 is connected with the limit stoper that limits its axial motion; Described outer spool 14 is provided with the big fire inlet hole 19 and the low baking temperature inlet hole 18 that can be communicated with air outlet channel 23 and intake duct 5, and described inner spool 12 is provided with two and the above flow restriction hole 13 that is communicated with air outlet channel 23 and low baking temperature inlet hole 18 of corresponding different combustion gas respectively; Wherein, the aperture of described big fire inlet hole 19 and low baking temperature inlet hole 18 is respectively more than or equal to the aperture in design maximum flow nozzle 4 and design maximum flow flow restriction hole 13, that is to say that 18 gas flows that can pass through of described big fire inlet hole 19 and low baking temperature inlet hole are respectively more than or equal to the big fire minimal design flow and the low baking temperature minimal design flow of combustion gas that this gas valve is supported.

In addition, inner spool 12 of the present utility model is provided with annular seal groove 16, and seal ring 11 is installed in the annular seal groove 16, and the both sides that back seal ring 16 is installed are fitted in the inwall of outer spool 14, prevent gas leakage.

Big fire flow of the present utility model is controlled by the aperture of nozzle 4, the low baking temperature flow is controlled by the limiting holes that flows to of inner spool 12, intake duct 5 directly is communicated with air outlet channel 23 by outer spool 14 when using big fire, therefore can adopt big fire inlet hole 19 to be positioned at before the low baking temperature inlet hole, the axle center that big fire inlet hole 19 and low baking temperature inlet hole 18 can be set is not on same circumference; Spool 14 surfaces are provided with axial notch 22 connection low baking temperature inlet hole 18 and intake ducts 5 outside then.

For easy to use, the end that outer spool 14 of the present utility model connects rotating shaft 3 is equipped with banking stop 8, the corresponding respectively big fire of 26, two limiting stoppers 26 of two limiting stoppers that described valve seat 2 is provided with restriction banking stop 8 rotation angles advanced hole 19 and low baking temperature inlet hole 18 and intake duct 5 together with.

Because combustion gas commonly used is mainly methane and propane, therefore inner spool 12 is provided with and can be positioned on the same circumference, be mutually four flow restriction holes 13 that 90 degree distribute, wherein relative 13 apertures, two flow restriction holes equate, this moment, limit stoper comprised that the outer spool 14 of annular stop groove 17 and edge that is arranged at inner spool 12 surfaces radially is provided with, be communicated with the pin-and-hole 25 of annular limited impression 17 and insert in the pin-and-hole 25, front end is embedded in the position limit pin 10 in the annular stop groove 17, the surface of outer spool 14 is provided with draw-in groove 15 along the circumferential surface of pin-and-hole 25, snap ring 19 is installed in the draw-in groove 15, the other end of described position limit pin 10 leans in snap ring 19 inboards, easy for installation, can realize spool 360 degree rotations, the adjusting mouth 24 of inner spool 12 is horizontal with vertical position and gets final product corresponding two kinds of combustion gas during use.

Consider that 360 whens rotation degree may exist flow restriction hole 13 and low baking temperature inlet hole 18 to be not easy to aim at, influence firing effect, inner spool 12 is provided be positioned on the same circumference, becomes two flow restriction holes 13 of 90 degree angles distributions; The position limit pin 10 that described limit stoper comprises in the blind hole 21 that is arranged on the inner spool 12 and the groove 20 and end insertion blind hole 21 that place on the outer spool 14, the other end is positioned at groove 20, rotate inner spool 12, the two ends of groove 20 are blocked position limit pin 10 corresponding low baking temperature inlet holes 18 respectively and are communicated with two flow restriction holes 13 respectively, with the operation of convenient conversion source of the gas.

Instruments such as the nozzle of replacing correspondence and use screw-driver directly rotate inner spool from the through hole of rotating shaft when the conversion combustion gas, make the connection of the low baking temperature inlet hole on the corresponding flow limiting holes and outer spool on the inner spool, because the gas flow that big fire inlet hole on the outer spool and low baking temperature inlet hole can pass through is respectively more than or equal to the big fire minimal design flow and the low baking temperature minimal design flow of combustion gas that this gas valve is supported, the final gas flow that realizes big fire is limited by the aperture of nozzle, the gas flow of low baking temperature is then limited by corresponding flow hole on the inner spool, easy to operate, safe and reliable, can be widely used in gas range, fuel baking oven, gas water-heater etc., also can be by changing spool, the mode of rotating shaft and nozzle is transformed traditional gas valve, makes it satisfy the purpose of two kinds of source of the gas smooth combustions.

Claims

1, a kind of gas valve of valve core structure improvement, comprise valve body (1) and valve seat (2), in the cavity by described valve body (1) and valve seat (2) formation spool is installed, described valve body (1) is provided with intake duct (5) that is used to connect source of the gas and the air outlet channel that is used to be connected burner (23), described air outlet channel (23) end is equipped with nozzle (4), it is characterized in that described spool comprises outer spool (14) and is installed on the interior inner spool (12) of outer spool (14), one end of described outer spool (14) is connected with the rotating shaft (3) of interspersed valve seat (2), described inner spool (12) is provided with adjusting mouth 1 (24) near an end of rotating shaft, and described rotating shaft (3) is provided with and is communicated with the through hole (6) of regulating mouthful (24); Described inner spool (12) is connected with the limit stoper that limits its axial motion; Described outer spool (14) is provided with the big fire inlet hole (19) and the low baking temperature inlet hole (18) that can be communicated with air outlet channel (23) and intake duct (5), and described inner spool (12) is provided with two and the above flow restriction hole (13) that is communicated with air outlet channel (23) and low baking temperature inlet hole (18) of corresponding different combustion gas respectively; Wherein, the aperture of described big fire inlet hole (19) and low baking temperature inlet hole (18) is respectively more than or equal to the aperture in design maximum flow nozzle (4) and design maximum flow flow restriction hole (13).

2, the gas valve of valve core structure improvement according to claim 1 is characterized in that described inner spool (12) is provided with annular seal groove (16), is equipped with seal ring (11) in the annular seal groove (16).

3, the gas valve of valve core structure improvement according to claim 1, the axle center that it is characterized in that described big fire inlet hole (19) and low baking temperature inlet hole (18) is not on same circumference; Described outer spool (14) surface is provided with the axial notch (22) that can be communicated with low baking temperature inlet hole (18) and intake duct (5).

4, the gas valve of valve core structure improvement according to claim 1 is characterized in that between described outer spool (14) and the rotating shaft (3) valve core spring (7) being installed.

5, the gas valve of valve core structure improvement according to claim 1, an end that it is characterized in that described outer spool (14) connection rotating shaft (3) is equipped with banking stop (8), and described valve seat (2) is provided with two limiting stoppers (26) of restriction banking stop (8) rotation angle.

6,, it is characterized in that described inner spool (12) is provided with four the flow restriction holes (13) that are positioned on the same circumference, are mutually 90 degree distributions according to the gas valve of the arbitrary described valve core structure improvement of claim 1 to 5; Described limit stoper comprise the annular stop groove (17) that is arranged at inner spool (12) surface and along outer spool (14) radially be provided with, be communicated with the pin-and-hole (25) of annular limited impression (17) and insert in the pin-and-hole (25), front end is embedded in the interior position limit pin (10) of annular stop groove (17).

7, the gas valve of valve core structure improvement according to claim 6, the surface that it is characterized in that described outer spool (14) is provided with draw-in groove (15) along the circumferential surface of pin-and-hole (25), snap ring (19) is installed in the draw-in groove (15), and the other end of described position limit pin (10) leans in snap ring (19) inboard.

8,, it is characterized in that described inner spool (12) is provided with two the flow restriction holes (13) that are positioned on the same circumference, become 90 degree angles to distribute according to the gas valve of the arbitrary described valve core structure improvement of claim 1 to 5; Described limit stoper comprises the blind hole (21) that is arranged on the inner spool (12) and places a groove (20) and an end on the outer spool (14) to insert the position limit pin (10) that blind hole (21) is interior, the other end is positioned at groove (20), rotate inner spool (12), the two ends of groove (20) are blocked the corresponding low baking temperature inlet hole of position limit pin (10) (18) respectively and are communicated with two flow restriction holes (13) respectively.