CN105526378A - Gas plug valve - Google Patents
Gas plug valve Download PDFInfo
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- CN105526378A CN105526378A CN201511030969.4A CN201511030969A CN105526378A CN 105526378 A CN105526378 A CN 105526378A CN 201511030969 A CN201511030969 A CN 201511030969A CN 105526378 A CN105526378 A CN 105526378A
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- Prior art keywords
- air
- hole
- distribution
- air distribution
- spool
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/10—Means for additional adjustment of the rate of flow
- F16K5/103—Means for additional adjustment of the rate of flow specially adapted for gas valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a gas plug valve. The gas plug valve comprises a valve body, a valve element, a valve rod, and a stepper motor connected with the valve rod through an output shaft; an air inlet hole and an air outlet hole are formed in the valve body; an air distribution cavity is formed in the valve body, and is arranged on an air way of the air inlet hole to divide the air inlet hole into inner and outer two sections; the air inlet hole of the inner section is intersected with the wall of the air distribution cavity to form an air distribution port; an air distribution wheel is arranged in the air distribution cavity; the back surface of the air distribution wheel is tightly bonded with an air distribution cavity wall with an air distribution port; the air distribution wheel is provided with an air distribution hole corresponding to the air distribution port; the valve rod penetrates through the air distribution wheel; and when the valve rod rotates, the air distribution wheel is driven to rotate. The air distribution cavity is formed in the air way of the air inlet hole; and the air distribution wheel rotates to enable the air distribution port to be matched with the air distribution holes with different apertures or the same air distribution hole, so that the air inlet quantity of the air inlet hole is adjusted, the air outlet quantity of the plug valve is adjusted, and firepower of more gears is obtained.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of fuel gas plug valve.
Background technique
Household electric appliance now such as water heater, gas cooker etc. all use piped gas or liquid gas as fuel, piped gas or liquid gas combustion heating higher relative to electrothermal efficiency, heating rate is fast, therefore more by popular welcome.The heating-up temperature of ordinary appliances regulates fairly simple, only need adjust the working power of electrical equipment, but for using the electrical equipment of combustion gas, then needs adjusting air inflow quantity, and the critical piece that air inflow regulates is exactly fuel gas plug valve.
Fuel gas plug valve generally comprises valve body and spool, and spool is provided with air outlet, and is provided with air outlet hole in valve body, and in valve core rotation process, air outlet hole can be aimed in air outlet, and then realizes giving vent to anger, and air outlet is different with the area of overlap of air outlet hole, causes the difference of gas output.Along with the discovery of Household electric appliance intelligent, traditional manual fuel gas plug valve is replaced by motor-driven fuel gas plug valve gradually.
CN2795582U discloses a kind of step motor driving type gas cock valve, it comprises valve body, spool and valve core spring, valve body has suction port and air outlet, stepper motor is connected with valve body by connecting plate, the output shaft of stepper motor is connected with spool by driving pin, output shaft and spool are in the same center line, and can rotate in valve body inter-sync, stepper motor connects with the drive interface of single-chip microcomputer.
CN203614784U fuel gas plug valve for touch kitchen range, comprise valve body, the stepper motor be loaded on valve body, to be located in valve body and the rotating spool of valve body and be located at the holddown spring of poppet head for pressed spool relatively, the head of described spool is connected with the output shaft of stepper motor, described spool has center hole and valve element circle side face is provided with the large fire hole and small fire hole that are communicated with center hole, the valve body of spool side-walls is provided with gas-entered passageway, and outlet end and the spool sidewall of this gas-entered passageway are close to.
CN201925516U discloses a kind of stopcock of many grades of flows, be made up of valve body and the rotating spool be arranged in valve body, it is characterized in that in spool, being provided with the axial bore connecting source of the gas, the flow control hole being circumferentially provided with several UNICOM's axial bores of spool, valve body is provided with 1 air outlet hole corresponding with flow control hole, which overcome angle of swing that existing stopcock gas flow changes and concentrate on shortcoming in unusual small angle range, particularly when using other power plant to replace manually carrying out Flow-rate adjustment to stopcock as micromachine, be difficult to the shortcoming realizing realizing many grades of flow controls in very little angular range, make user can the gas flow size of adjusting gas stove very easily, obtain the firepower of many grades.
Summary of the invention
The invention provides a kind of fuel gas plug valve, obtained the firepower of more gears by adjusting air inflow quantity.
A kind of fuel gas plug valve, comprises the stepper motor that valve body, spool, valve rod and output shaft connect valve rod, is provided with inlet hole and air outlet hole in described valve body; Valve inner is provided with air distribution cavity, and described air distribution cavity is arranged in the gas circuit of inlet hole, inlet hole is divided into inside and outside two sections, and the inlet hole of inner segment and air distribution cavity wall cross formation air distribution port; The inside of air distribution cavity is provided with distribution wheel, and the air distribution cavity wall with air distribution port is close at the back side of distribution wheel, and described distribution wheel is provided with the air distribution hole arranged corresponding to air distribution port; Described valve rod is through distribution wheel, and valve rod rotates and drives distribution wheel to rotate simultaneously.
The back side of distribution wheel of the present invention refers to that distribution wheel is close to the surface of air distribution cavity wall, and its reverse side is the front of distribution wheel accordingly.Described firepower refers to the state of burner combustion, and the gas output of it and stopcock is proportional, reaches maximum fire and just refers to that stopcock gas output is maximum, so related domain generally describes the gas output of stopcock with firepower.
During work, traditional Gas cock valve regulation firepower is mainly by adjusting the gas flow in pore, and the gas flow in inlet hole does not change all the time.The area aimed at the regulating the qi flowing in the channels groove on spool of the suction port of spool hole wall is also generally indeclinable in the maximum fire stage, and this causes inner and outer rings gas output very short from the process being up to minimum gradual change, is difficult to the step-less adjustment realizing firepower.
The present invention is directed to the problems referred to above and be provided with air distribution cavity and distribution wheel, increase the adjustment to gas flow in inner segment inlet hole, and then the firepower realizing more grades regulates.Regulate the air inflow of inner segment inlet hole can be realized by the air distribution hole allowing air distribution port aim at different pore size, the different piece that air distribution port also can be allowed to aim at same air distribution hole realizes, certainly when only having an air distribution hole, air distribution hole should be different at the width of different parts, and be arrange along the sense of rotation of distribution wheel.
The fine adjustment only utilizing an air distribution hole to realize air inflow is more difficult, and main cause is that the machining accuracy of air distribution hole and the rotation precision of stepper motor are difficult to ensure.Preferred mode is, described distribution wheel is provided with at least two air distribution holes along distribution wheel circumferential array, and the air distribution hole namely by allowing air distribution port aim at different pore size realizes the fine adjustment of air inlet.
There is following problem in such scheme, for avoiding the situation occurring dying, the radian of air distribution port is larger, certainly the gap of adjacent two air distribution holes is greater than, distribution will be caused like this to take turns in rotation process, and air distribution port can aim at plural air distribution hole simultaneously, just there will be the instability of firepower, for solving this problem, the solution of the present invention is:
Described distribution wheel is provided with full admission hole, and described air distribution hole is divided into two groups, and the inlet end of the first assembly pore is closed, and full admission hole is communicated with by air flue successively with the air distribution hole of first group, and the cross-section area of air flue reduces gradually along inverse distribution wheel sense of rotation; The air distribution hole of second group is independent separately, and aperture reduces gradually against distribution wheel sense of rotation.
First assembly pore is for regulating the gas output of outer shroud and inner ring, and the second assembly pore is for regulating the gas output of inner ring, certain second assembly pore also can be communicated with full admission hole by the air flue of other a group, the mode be communicated with also is be communicated with successively, otherwise air flue quantity can be caused too much, and cannot process.
The cross-section area of every section of air flue itself is uniform, just adjacent gas path cross sections is long-pending to be reduced gradually, the aperture of air distribution hole is much larger than the cross-section area of air flue, therefore the air inflow of inner segment is subject to the restriction of air flue cross-section area, so just can realize the rotation along with distribution wheel, the gas flow of inner segment inlet hole is fewer and feweri, there will not be unstable phenomenon.
Air flue can be arranged on the inside of distribution wheel, but process very difficult, preferred scheme is: described distribution wheel front is provided with the air inlet duct being communicated with full admission hole and first group of each air distribution hole successively, the front of described distribution wheel is covered with cover plate, the inlet end of the first assembly pore and air inlet duct are closed by cover plate, the air flue described in formation.Very convenient at the surface fluting of distribution wheel, and the cross-section area of air inlet duct can be regulated by the width or the degree of depth adjusting air inlet duct.
The outlet side of each air distribution hole forms gas booking groove in the back side enlarging that distribution is taken turns, the fan annular that described gas booking groove and air distribution port are all is the center of circle with distribution wheel shaft line, and the length of side is equal, all gas booking groove shapes are all identical with area, and the spacing of adjacent gas booking groove is equal.Because the aperture of air distribution hole can be variant, if it is also unequal to add spacing, so control system is just difficult to the firepower concrete rotation of setting how many angles just can reach needs, by arranging gas booking groove, and size shape is identical, spacing is also equal, very convenient calculating distribution can take turns the angle needing to rotate, not need aperture and the spacing of considering air distribution hole.
In the present invention, described distribution wheel is provided with full admission hole, described air distribution hole is divided into two groups, the inlet end of the first assembly pore is closed, full admission hole is communicated with by air flue successively with the air distribution hole of first group, and the quantity of the first assembly pore is 5, and corresponding gas booking groove is 120-130 ° across the rotation radian that distribution is taken turns, the quantity of the second assembly pore is 3, and corresponding gas booking groove is 60-70 ° across the rotation radian that distribution is taken turns.The described rotation radian across distribution wheel refers to the radian of the spaced winding distribution wheel circumference of first gas booking groove and the second gas booking groove.The quantity of air distribution hole is more in theory, and the firepower gear that can regulate is more, but difficulty of processing is also higher, across rotation radian generally set according to actual conditions.
In the present invention, the radian of air distribution port is three times of gas booking groove radian, and the gap radian of adjacent gas booking groove is greater than the radian of gas booking groove, but is less than the radian of twice gas booking groove, can ensure not die in distribution wheel rotation process, but air distribution port can not aim at three air distribution holes again simultaneously.
Valve rod is through distribution wheel, can take turns with distribution and be fixedly connected with, but this structure is not easy to equipment, also cannot ensure the tightness between distribution wheel and air distribution cavity wall, better scheme is, described valve rod takes turns transition fit by the distribution wheel non-circular hole at center and distribution, stage clip is provided with between the front of described distribution wheel and air distribution cavity wall, stage clip heads on distribution wheel, and make its back side be close to air distribution cavity wall, non-circular hole can be square hole, polygonal hole etc.
Because stepper motor is more accurate device, but the assembling of valve body is accurate not comparatively speaking, if valve rod directly connects spool, when valve rod and valve core rotation decentraction, can cause stuck, serious situation can damage stepper motor, the solution of the present invention is: described valve rod connects spool by interlock dish, is provided with Returnning spring, by arranging interlock dish and Returnning spring between interlock dish and spool, even if the situation of the bias that valve rod and spool exist, also can realize interlock.
The spool bore matched with spool is provided with in described valve body, the inlet hole of inner segment and spool hole wall cross and form air outlet, described valve body is provided with inner ring air outlet hole and outer shroud air outlet hole, inner ring air outlet hole and outer shroud air outlet hole and spool hole wall cross and form inner ring suction port and outer shroud suction port respectively, described spool is provided with inner ring regulating the qi flowing in the channels groove corresponding with inner ring suction port and outer shroud suction port respectively and outer shroud regulating the qi flowing in the channels groove, inner ring regulating the qi flowing in the channels groove is communicated with up and down with outer shroud regulating the qi flowing in the channels groove, and described air outlet and outer shroud suction port are in the sustained height of spool.
The present invention arranges air distribution cavity in the gas circuit of inlet hole, by rotating distribution wheel, the air distribution hole of air distribution port and different pore size or the different of same air distribution hole are made to pay no attention to cooperation, the air inflow of adjustment inlet hole, and then the gas output of regulating cock valve, obtain the firepower of more gears.
Accompanying drawing explanation
Fig. 1 is the structural representation of fuel gas plug valve of the present invention.
Fig. 2 is the cooperating structure schematic diagram of distribution wheel and air distribution cavity wall.
Fig. 3 is the structural representation of taking turns the air distribution cavity wall matched with distribution.
Fig. 4 is the structural representation in distribution wheel front.
Fig. 5 is the structural representation at the distribution wheel back side.
Fig. 6 is distribution wheel A-A sectional drawing.
Fig. 7 is the structural representation of spool.
Fig. 8 is the C-C sectional drawing of spool.
Fig. 9 is the B-B sectional drawing of spool.
Figure 10 is the assembly structure schematic diagram of spool in spool bore.
Figure 11 is that valve rod rotates 65 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 12 be valve rod rotate 65 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 13 be valve rod rotate 65 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Figure 14 is that valve rod rotates 108 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 15 be valve rod rotate 108 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 16 be valve rod rotate 108 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Figure 17 is that valve rod rotates 192 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 18 be valve rod rotate 192 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 19 be valve rod rotate 192 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Figure 20 is that valve rod rotates 220 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 21 be valve rod rotate 220 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 22 be valve rod rotate 220 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Figure 23 is that valve rod rotates 248 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 24 be valve rod rotate 248 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 25 be valve rod rotate 248 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Figure 26 is that valve rod rotates 304 ° of distribution wheels and coordinates schematic diagram between air distribution port.
Figure 27 be valve rod rotate 304 ° of spools and inner ring air outlet hole coordinate schematic diagram.
Figure 28 be valve rod rotate 304 ° of spools and outer shroud air outlet hole, inlet hole coordinate schematic diagram.
Embodiment
As shown in Figure 1; a kind of fuel gas plug valve; comprise valve body 1 and spool 2; valve body is assemblied by 4 parts, and first portion is for the protection of stepper motor 3, and second portion is for installing Motionless electromagnetic valve 4 and stepper motor 3; second portion and Part III coordinate formation air distribution cavity 10; Part IV install spool 2, be all bolted between adjacent two parts, and between be provided with seal ring.
The output shaft of stepper motor 3 connects valve rod 7 by coupling 5, valve rod 7 is provided with potentiometer 6, potentiometer 6 is for detecting rotation angle and the sense of rotation of valve rod 7, valve rod 7 is through air distribution cavity 10, extend to the bottom of spool 2, valve rod 7 can directly be connected with spool, but because assembling between them has gap, can cause both cannot coaxial rotation, because valve rod 7 is driven by stepper motors, bias cannot be sensed, even if spool 2 blocks, also can work, serious conditions can damage stepper motor always.
Therefore, interlock dish 11 is provided with between the end of valve rod 7 and the bottom of spool 2, interlock is coiled 11 centers and is provided with the groove coordinated with valve rod, has the projection matched with the bottom of spool 2, be provided with Returnning spring 12 between interlock dish 11 and the bottom of spool near one end of spool 2.Even if valve rod 7, there is fit up gap between interlock dish 11 and spool 2, owing between interlock dish and valve rod and spool being flexible connection, add the cooperation of upper reset spring, interlock dish 11 can be tilted towards any direction, avoid spool 2 to rotate bias and affect stopcock normally working.
As shown in Fig. 1 and Figure 10, be provided with the spool bore of installing spool 2 in valve body 1, the oral area of spool bore has the cover plate 23 of encapsulation, is provided with damping spring 21 between the top of spool 2 and cover plate 23, and spool top is provided with the blind hole holding described damping spring 21.Because spool 2 needs when working to rotate, damping spring 21 will inevitably rotate thereupon, but cover plate 23 is not along with rotation, and this causes the meeting distortion of spring 21 top and cannot restore.Also be provided with closure 22 on the top of spool 2, two pin of closure 22 insert in the restraining groove 27 at spool top, and center has the projection stretching into damping spring 21, and closure 22 pushed down by cover plate 23, thus fixing damping spring 21.Closure 22 can with valve core rotation, and because the area of contact of closure 22 and cover plate 23 is little, frictional force is also little, can not affect the rotation of spool.
The surface of valve body has suction port, inner ring air outlet and outer shroud air outlet, and as shown in Figure 1, the inside of valve body 1 is provided with inlet hole 13, inner ring air outlet hole 28 and outer shroud air outlet hole 29, and solenoid valve is for controlling the air inlet of inlet hole 13.Air distribution cavity 10 is arranged in the gas circuit of inlet hole 13, namely the position of inlet hole process, and inlet hole is divided into inside and outside two sections by air distribution cavity 10.
As shown in Figures 2 and 3, inner segment inlet hole 16 crosses with the inwall of air distribution cavity 10 and forms air distribution port 121, as shown in Figure 1, distribution wheel 8 is provided with in air distribution cavity, the air distribution cavity wall with air distribution port 121 is close at the back side of distribution wheel 8, and has the stage clip 9 be set on valve rod 7 between the front of distribution wheel 8 and the sidewall of air distribution cavity 10.Stage clip 9 heads on distribution wheel, ensures that the tightness coordinated between 8 back sides with air distribution cavity wall is taken turns in distribution.In addition, as shown in Figures 2 and 3, for ensureing the tightness of whole air distribution cavity 10, there is between second portion and Part III seal ring 120.
As Figure 4-Figure 6, distribution wheel 8 is discoid, and center has rectangular hole 82, rectangular hole 82 and valve rod 7 transition fit, and therefore distribution wheel 8 can rotate with valve rod.Distribution wheel 8 is provided with full admission hole 80 and two assembly pores, the aperture of the air distribution hole 801,802,803,804,805 of first group is all identical, but full admission hole 80 is communicated with by air flue 81 successively with each air distribution hole, the cross-section area of the air flue between adjacent two air distribution holes is even, but the cross-section area of adjacent two air flues reduces gradually against distribution wheel sense of rotation.Distribution wheel 83,84,85 apertures of second group are different, reduce gradually along inverse distribution wheel sense of rotation aperture.So-called inverse distribution wheel sense of rotation is the direction of taking turns direction of rotation with distribution.Air flue 81 can arrange the inside of distribution wheel, but processing is very difficult, therefore needs the front fluting at distribution wheel 8, then covers on distribution wheel 8 with cover plate 87, closes inlet end and the notch of the first assembly pore, form air flue.
In order to reach the object accurately controlled, the outlet side enlarging of air distribution hole forms gas booking groove 88 at the back side of distribution wheel 8, the fan annular that gas booking groove 88 and air distribution port 121 are all is the center of circle with the rotation axis of distribution wheel, and the length of side is all thought.The radian of air distribution port 121 is three times of gas booking groove 88 radian, and the radian in the gap of adjacent two gas booking grooves 88 is greater than the radian of single gas booking groove 88, but is less than the radian of twice gas booking groove, and between every two gas booking grooves 88, gap radian is all equal.Can ensure that distribution wheel must have an air distribution hole to aim at air distribution port 121 in rotation process like this, can not die.
As shown in Figure 4, in the present embodiment, the quantity of the first assembly pore is 5, the quantity of the second assembly pore is 3, gas booking groove corresponding to the first assembly pore across distribution wheel to rotate radian be 120-130 °, gas booking groove corresponding to the second assembly pore across distribution wheel to rotate radian be 60-70 °.Certain second assembly pore also adopts the intake method as the first assembly pore, but because the air distribution hole quantity of second group is few, and the aperture difference of adjacent two air distribution holes is apart from comparatively large, and therefore necessity is not very large.
As is seen in figs 7-10, the side of spool 2 is provided with inner ring regulating the qi flowing in the channels groove 24 and outer shroud regulating the qi flowing in the channels groove 25, corresponding with inner ring air outlet hole 28 and outer shroud air outlet hole 29 respectively, inner ring air outlet hole 28 and corresponding the crossing with spool hole wall of outer shroud air outlet hole 29 form inner ring suction port and outer shroud suction port respectively, inner segment inlet hole 16 and spool hole wall cross and form air outlet, air outlet and outer shroud suction port are in same height, inner ring regulating the qi flowing in the channels groove 24 and outer shroud regulating the qi flowing in the channels groove 25; The guarantor fire groove 290 corresponding with outer shroud suction port is also provided with in addition on spool 2.
In figure 3, distribution wheel 8 is in the position that rotation angle is 0 °, and air distribution port is not aimed at any air distribution hole, now not air inlet.As figs 11-13, distribution wheel 8 has rotated clockwise 65 °, and full admission hole 80 is aimed at air distribution port 121, and inner ring air outlet hole 28 and outer shroud air outlet hole all reach maximum gas output, reach maximum fire; As illustrated in figures 14-16, air distribution port 121 is aimed at air distribution hole 81, and the air inflow of inner segment inlet hole 16 reduces, and the gas output of inner ring air outlet hole 28 and outer shroud air outlet hole 29 all reduces, in reaching+and firepower; Along with distribution wheel 8 continues to rotate clockwise with valve rod 7, air distribution port 121 can aim at air distribution hole 802,803,804 successively, because the cross section of air flue can reduce gradually, therefore, the air inflow of inner segment inlet hole 16 also can reduce gradually, the gas output of inner ring air outlet hole 28 and outer shroud air outlet hole 29 reduces gradually, and inner and outer rings firepower reduces gradually.
As in figs. 17-19, distribution wheel 8 have rotated 192 °, and air distribution port 121 is aimed at air distribution hole 804.As illustrated in figs 20-22, distribution wheel 8 rotates 220 °, and air distribution port 121 is aimed at air distribution hole 805, and outer shroud inlet hole 29 is aimed at the guarantor's fire groove 290 on spool, and inner and outer rings all reaches protects firepower.
Be rotated further spool 8, outer shroud inlet hole 29 just no longer air inlet, as shown in figs. 23-25, distribution wheel 8 rotates 248 °, and air distribution port 121 is aimed at air distribution hole 83, and inner ring inlet hole 28 reaches again maximum gas output, and outer shroud is without fire, and inner ring reaches maximum fire; Rotational valve core 8 again, air distribution port 121 can and air distribution hole 84,85 aim at, due to little all than air distribution hole 83 of aperture, the air inflow of inner segment inlet hole also can diminish, and the gas output of inner ring air outlet hole 28 reduces, interior ring firepower reduction.As shown in figures 26-28, air distribution port 121 is aimed at air distribution hole 85, and the air inflow of inner segment inlet hole 16 reaches minimum, and inner ring is minimum firepower.
Claims (10)
1. a fuel gas plug valve, comprises the stepper motor that valve body, spool, valve rod and output shaft connect valve rod, is provided with inlet hole and air outlet hole in described valve body; It is characterized in that, valve inner is provided with air distribution cavity, and described air distribution cavity is arranged in the gas circuit of inlet hole, inlet hole is divided into inside and outside two sections, and the inlet hole of inner segment and air distribution cavity wall cross formation air distribution port; The inside of air distribution cavity is provided with distribution wheel, and described distribution wheel is provided with the air distribution hole arranged corresponding to air distribution port, and the air distribution cavity wall with air distribution port is close at the back side of distribution wheel; Described valve rod is through distribution wheel, and valve rod rotates and drives distribution wheel to rotate simultaneously.
2. fuel gas plug valve as claimed in claim 1, is characterized in that, described distribution wheel is provided with at least two air distribution holes along distribution wheel circumferential array.
3. fuel gas plug valve as claimed in claim 2, it is characterized in that, described distribution wheel is provided with full admission hole, described air distribution hole is divided into two groups, the inlet end of the first assembly pore is closed, full admission hole is communicated with by air flue successively with the air distribution hole of first group, and the cross-section area of air flue reduces gradually along inverse distribution wheel sense of rotation; The air distribution hole of second group is independent separately, and aperture reduces gradually against distribution wheel sense of rotation.
4. fuel gas plug valve as claimed in claim 3, it is characterized in that, described distribution wheel front is provided with the air inlet duct being communicated with full admission hole and first group of each air distribution hole successively, the front of described distribution wheel is covered with cover plate, the inlet end of the first assembly pore and air inlet duct are closed by cover plate, the air flue described in formation.
5. the fuel gas plug valve as described in as arbitrary in claim 1-4, it is characterized in that, the outlet side of each air distribution hole forms gas booking groove in the back side enlarging that distribution is taken turns, the fan annular that described gas booking groove and air distribution port are all is the center of circle with distribution wheel shaft line, and the length of side is equal, all gas booking groove shapes are all identical with area, and the spacing of adjacent gas booking groove is equal.
6. fuel gas plug valve as claimed in claim 5, it is characterized in that, described distribution wheel is provided with full admission hole, described air distribution hole is divided into two groups, and the inlet end of the first assembly pore is closed, and full admission hole is communicated with by air flue successively with the air distribution hole of first group, the quantity of the first assembly pore is 5, corresponding gas booking groove is 120-130 ° across the rotation radian that distribution is taken turns, and the quantity of the second assembly pore is 3, and corresponding gas booking groove is 60-70 ° across the rotation radian that distribution is taken turns.
7. fuel gas plug valve as claimed in claim 5, it is characterized in that, the radian of air distribution port is three times of gas booking groove radian, and the gap radian of adjacent gas booking groove is greater than the radian of gas booking groove, but is less than the radian of twice gas booking groove.
8. fuel gas plug valve as claimed in claim 1, is characterized in that, described valve rod takes turns transition fit by the non-circular hole at distribution wheel center with distribution, is provided with stage clip between the front that described distribution is taken turns and air distribution cavity wall.
9. fuel gas plug valve as claimed in claim 1, is characterized in that, described valve rod connects spool by interlock dish, is provided with Returnning spring between interlock dish and spool.
10. fuel gas plug valve as claimed in claim 1, it is characterized in that, the spool bore matched with spool is provided with in described valve body, the inlet hole of inner segment and spool hole wall cross and form air outlet, described valve body is provided with inner ring air outlet hole and outer shroud air outlet hole, inner ring air outlet hole and outer shroud air outlet hole and spool hole wall cross and form inner ring suction port and outer shroud suction port respectively, described spool is provided with inner ring regulating the qi flowing in the channels groove corresponding with inner ring suction port and outer shroud suction port respectively and outer shroud regulating the qi flowing in the channels groove, inner ring regulating the qi flowing in the channels groove is communicated with up and down with outer shroud regulating the qi flowing in the channels groove, described air outlet and outer shroud suction port are in the sustained height of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030969.4A CN105526378B (en) | 2015-12-31 | 2015-12-31 | fuel gas plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030969.4A CN105526378B (en) | 2015-12-31 | 2015-12-31 | fuel gas plug valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105526378A true CN105526378A (en) | 2016-04-27 |
| CN105526378B CN105526378B (en) | 2018-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511030969.4A Active CN105526378B (en) | 2015-12-31 | 2015-12-31 | fuel gas plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526378B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870772A (en) * | 2017-03-15 | 2017-06-20 | 浙江新涛电子机械股份有限公司 | A kind of plug valve |
| CN109425484A (en) * | 2017-08-25 | 2019-03-05 | 宁波方太厨具有限公司 | Plug valve of gas stove flow rate test platform |
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| CN109425484B (en) * | 2017-08-25 | 2024-01-16 | 宁波方太厨具有限公司 | Flow test board for plug valve of gas stove |
| CN114526353A (en) * | 2022-01-04 | 2022-05-24 | 浙江新涛电子科技有限公司 | Gas distribution chamber assembly of gas valve and gas valve |
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| CN105526378B (en) | 2018-09-14 |
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