CN206072394U - Double gas share plug valve - Google Patents

Abstract

A kind of pair of gas shares plug valve, it includes valve body (1), the cock (2) being rotatably connected in valve body (1), the valve gap (3) for being fixed on valve body (1) end and the valve rod (4) being rotatably connected on valve gap (3) for being provided with inlet channel (1a) and outlet passageway (1b), the outer peripheral face of valve element (8) is provided with four passages being evenly distributed, and four passages are connected with counterbore (9), be provided between valve element (8) and cock (2) limit valve element (8) can only back and forth 180 ° rotation position-limit mechanism；Valve element (8) positioned at initial restraining position when, two passages in four passages are connected with two air inlets (7) respectively, when valve element (8) rotates 180 ° to another restraining position, the another two passage in four passages is connected with two air inlets (7) respectively；Compared with prior art, this utility model have that volume is relatively small, stability in use preferably, longer service life, preferable ease of use and the characteristics of preferable safety in utilization.

Description

Double gas share plug valve

Technical field

This utility model is related to a kind of gas valve, and particularly a kind of pair gas shares plug valve.

Background technology

Plug valve is the rotary valve of closure member or plunger shape, makes the passway on valve plug and the passage on valve body by rotation Mouth is communicated or is separated, and realizes a kind of valve being turned on and off.The shape of the valve plug of plug valve can be into cylinder or cone.Rotation Plug valve is a kind of straight-through valve of high-speed switch, as between rotary seal face, motion carries wiping action, and can be complete in standard-sized sheet The contact with flow media is prevented entirely, therefore it generally can be used for the medium with particle.Another important spy of plug valve Property is that it is readily adapted to accommodate multi-channel structure, so that a valve can obtain two, three, or even four different runners.

The commonly used rotary gas valves of Jing in domestic gas equipment, the valve are used for manual operation and control gas source Switching supply；In prior art, conventional plug valve generally comprises the valve body for being provided with inlet channel and outlet passageway, in valve body The taper hole for communicating with inlet channel, outlet passageway respectively is provided with, is provided with taper hole and cutting that taper hole fitted seal is assembled Cone-shaped valve element, is provided with multiple different size of air inlets communicated with inlet channel on valve element side face, valve body one end is installed The valve rod for having valve gap and rotating for rotary spool, adjusts various inlet hole and the valve on valve element by rotary valve rod during use Inlet channel connection on body, to adjust the purpose that gas supply amount reaches control gas-fired equipment intensity of a fire size.

At present, various different gas energies are used widely, such as natural gas and propane flammable gas etc., different combustion gas energy The combustion characteristics in source is different, and this allows for, and gas utensil gas flow required in use is different, and needs are set on valve element Put different size of air inlet to control the flow of correspondence source of the gas, when user needs to switch different types of gas under special circumstances Source use when, it is necessary to control plug valve switch out different size of air inlet carry out adaptation output source of the gas.

There is a kind of plug valve for using that can switch in two kinds of sources of the gas in correlation technique (such as Publication No. CN105351556A, entitled pair of gas share plug valve), arrange in one end of the close valve element (cock of correspondence the application) of valve rod Have alignment pin, the step for stopping alignment pin at multiple intervals be provided with the inner chamber of valve gap, by rotary valve rod so that Alignment pin is positioned at different steps, various sizes of air inlet on valve element can be caused to connect with inlet channel, the cock An adjustable limiting bar is additionally provided with valve, adjustable limiting bar is located between the step of two kinds of air-source inflow holes of switching, by insertion Or extract adjustable limiting bar to stop or avoid alignment pin, reach the purpose for being suitable for air inlet of switching correspondence source of the gas；However, on The adjustable side for stating adjustable limiting bar in plug valve is exposed outside, and this dust and greasy dirt for resulting in the external world are easily caused adjustable limit Position bar adjusts failure, and dust or greasy dirt enter into the situation generation for causing valve element to stick or blocking in valve body, using stable Property is poor, and service life is shorter；And only stay adjusting to also need to remove original nozzle after gag lever post is adjusted to natural gas Lower nozzle carrier, this is accomplished by nozzle could being removed after valve body integral demounting, it is necessary to which professional can just complete so that source of the gas Regulation it is cumbersome, ease of use is poor.

Utility model content

For problem above, this utility model provides that a kind of volume is relatively small, stability in use preferably, service life compared with The preferably double gas of long and ease of use share plug valve.

This utility model solves the technical scheme used by problem above：There is provided a kind of double gas with following structure to share Plug valve, it includes being provided with the valve body of inlet channel and outlet passageway, the cock being rotatably connected in valve body, is fixed on valve body The valve gap of end and the valve rod being rotatably connected on valve gap, one end of the valve rod are located in valve body and mutual between cock Circumferential spacing, the other end of valve rod is located at the outside of valve body, and the valve rod is provided with axial adjustment hole, and the cock is provided with axial direction Centre bore, one end of the centre bore connected with outlet passageway, and one end of the adjustment hole is connected with the other end of centre bore, The other end of adjustment hole is connected with outside, and the outer peripheral face of the cock is provided with two air inlets connected with centre bore, and two The axis of individual air inlet is mutually perpendicular to, and is rotatably connected to valve element in the centre bore, one end end of the nearly outlet passageway of the valve element Face is provided with counterbore, and the outer peripheral face of valve element is provided with four passages being evenly distributed, and four passages are connected with counterbore, institute State be provided between valve element and cock limit valve element can only back and forth 180 ° rotation position-limit mechanism, the position-limit mechanism is to valve element axial direction It is spacing, sealing mechanism, and one end end face of the nearly valve rod of valve element are provided between one end of the nearly valve rod of the valve element and centre bore hole wall It is provided with regulating tank；When valve element is located at initial restraining position, two passages in four passages are connected with two air inlets respectively Logical, when 180 ° of valve core rotation is to another restraining position, the another two passage in four passages is connected with two air inlets respectively It is logical.

After using above structure, compared with prior art, this utility model is due to by arranging one again inside cock Valve element is come the large and small fire control after solving the problems, such as source of the gas and changing, and the different size passage of different source of the gas correspondence, mutually it Between no longer share, also should not just remove nozzle, change when eliminating originally shared passage source of the gas be accomplished by removing nozzle or The problem of installation, ease of use are higher, it is not necessary to which professional and technical personnel is capable of achieving the switching of difference source of the gas, operability It is stronger；And when adjusting, as during usual use, valve rod is socketed with knob, pass through after needing push-turn key again What instrument extend into valve element regulating tank to be adjusted from the adjustment hole of valve rod, then extraneous environment cannot affect to cause valve element, Just there is no extraneous dust and greasy dirt is easily accessible governor motion and causes to adjust failure, and dust or greasy dirt enter into valve body yet The interior and situation that causes valve element to stick or block, preferably, service life is also longer for stability in use, be not easy to occur by child or The situation of other people mistuning sections, safety in utilization are preferable；Furthermore other governor motion is no longer set on valve body, also need not just be stayed Go out unnecessary position, and then the overall volume of valve body can be reduced, save raw material, so as to reduce production cost.Therefore this reality With it is new with volume is relatively small, stability in use preferably, service life is longer, ease of use is preferable and safety in utilization Preferably the characteristics of.

Used as improvement, the position-limit mechanism includes pin, and the centre bore hole wall is provided with installing hole, and installing hole is logical Hole, the valve element outer peripheral face are provided with the stopper slot spacing to valve element with bayonet fittings, and the stopper slot is on valve element outer peripheral face edge Axially extending, described pin one end is located in installing hole, and the pin other end is located in stopper slot, and valve element is from the limited groove of pin one It is just 180 ° that end restraining position turns to the limited groove other end restraining position of pin；Then this position-limit mechanism parts compared with Few, simple structure, preparation cost are relatively low, and also allow for workman's installation so that this utility model is easier to prepare, cost compared with It is low.

Used as further improving, the stopper slot is located at one end of the nearly outlet passageway of valve element outer peripheral face, and stopper slot with it is heavy Hole connects；After then so arranging, passage and sealing mechanism can be avoided, be easy to processing, while and not affecting valve element entirety Intensity.

Used as further improving, the installing hole is provided with chamfering away from the hole wall of valve element one end, and the pin is bullet Property straight pin；After then so arranging, it is not necessary to which tapping, elastic cylindrical pin just can be with relative stability and installing hole close-fittings Close, install also more convenient, and then reduce production cost of the present utility model.

Used as further improving, the sealing mechanism includes sealing ring, on the outer peripheral face of the nearly valve rod one end of the valve element The indent of annular is provided with, the sealing ring is located in indent；Then this sealing mechanism parts are relatively fewer, and simple structure, It is easy to assembling, it is possible to decrease production cost, sealing effectiveness are preferable.

Used as further improving, four passages are divided into NG high positions hole, NG low levels hole, LP high position holes and LP low levels Hole, the axis in NG high position hole with the axis in LP high positions hole on the same line, and the axis in NG low levels hole and LP low levels hole Axis on the same line；If during initial position, NG high position holes and NG low levels hole are connected with two air inlets respectively, are rotated When 180 ° of valve element is to restraining position, now LP high position holes and LP low levels hole are connected with two air inlets respectively；Described two air inlets Cambered surface between hole is less than opening of the inlet channel in valve interior wall；After then so arranging so that adjust simpler, and two , less than inlet channel after the opening of valve interior wall is arranged, this can be during the regulation of large and small fire for cambered surface between air inlet Guarantee is not in the situation of cutoff, flame seriality preferably, so as to ensure to cook effect, so as to improve of the present utility model making With stability and reliability.

Description of the drawings

Fig. 1 is the structural representation that the double gas of this utility model share plug valve.

Fig. 2 is the structural representation that the double gas of this utility model share plug valve cock.

Fig. 3 is the sectional view of the line A-A along Fig. 2.

Fig. 4 be when the double gas of this utility model shares plug valve LP source of the gas states between valve body, cock and valve element each other The structural representation of position.

Fig. 5 be when the double gas of this utility model shares plug valve NG source of the gas states between valve body, cock and valve element each other The structural representation of position.

Fig. 6 be when the double gas of this utility model shares plug valve LP source of the gas state big fire between valve body, cock and valve element mutually Between position structural representation.

Fig. 7 be when the double gas of this utility model shares plug valve LP source of the gas state small fires between valve body, cock and valve element mutually Between position structural representation.

Fig. 8 be when the double gas of this utility model shares plug valve NG source of the gas state big fire between valve body, cock and valve element mutually Between position structural representation.

Fig. 9 be when the double gas of this utility model shares plug valve NG source of the gas state small fires between valve body, cock and valve element mutually Between position structural representation.

As shown in the figure：1st, valve body, 1a, inlet channel, 1b, outlet passageway, 2, cock, 3, valve gap, 4, valve rod, 5, adjust Hole, 6, centre bore, 7, air inlet, 8, valve element, 8a, NG high position hole, 8b, NG low level hole, 8c, LP high position hole, 8d, LP low level hole, 9th, counterbore, 10, regulating tank, 11, pin, 12, installing hole, 13, stopper slot, 14, sealing ring, 15, indent.

English abbreviations of the NG for natural gas-Natural Gas.

English abbreviations of the LP for liquefied gas oil gas-LiquefiedPetroleum Gas.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, this utility model is described further.

As shown in Fig. 1～9, a kind of pair of gas shares plug valve, and it includes being provided with inlet channel 1a's and outlet passageway 1b Valve body 1, the cock 2 being rotatably connected in valve body 1, the valve gap 3 for being fixed on 1 end of valve body and it is rotatably connected on valve gap 3 Valve rod 4 (certainly also including other parts, but due to being not directed to the inventive point of the invention, therefore will not be described here), institute The one end for stating valve rod 4 is located in valve body 1 and mutually circumferential spacing between cock 2, and the other end of valve rod 4 is located at the outer of valve body 1 Side, the other end of valve rod 4 for knob grafting, the valve rod 4 is provided with axial adjustment hole 5, through hole centered on adjustment hole 5, The cock 2 is provided with axial centre bore 6, and one end of the centre bore 6 is connected with outlet passageway 1b, and the one of the adjustment hole 5 End is connected with the other end of centre bore 6, and the other end of adjustment hole 5 is connected with outside, and the outer peripheral face of the cock 2 is provided with two The air inlet 7 connected with centre bore 6, and the axis of two air inlets 7 is mutually perpendicular to, two air inlets 7 it is equivalently-sized, it is described Valve element 8 is rotatably connected in centre bore 6, one end end face of 8 nearly outlet passageway 1b of the valve element is provided with counterbore 9, the periphery of valve element 8 Face is provided with four passages being evenly distributed, and four passages are connected with counterbore 9, are set between the valve element 8 and cock 2 Restricted valve element 8 can only back and forth 180 ° rotation position-limit mechanism, position-limit mechanism causes valve element 8 carry out 180 ° of back rotation, described Position-limit mechanism is provided with sealing mechanism between 6 hole wall of one end and centre bore of 8 nearly valve rod 4 of the valve element to 8 axial limiting of valve element, And one end end face of 8 nearly valve rod 4 of valve element is provided with regulating tank 10, regulating tank 10 is flat recess (alternatively cross recess or interior hex slot Deng)；When valve element 8 is located at initial restraining position, two passages in four passages are connected with two air inlets 7 respectively, When valve element 8 rotates 180 ° to another restraining position, the another two passage in four passages is connected with two air inlets 7 respectively It is logical.

The position-limit mechanism includes pin 11, and 6 hole wall of the centre bore is provided with installing hole 12, and installing hole 12 is through hole, 8 outer peripheral face of the valve element is provided with and coordinates the stopper slot 13 spacing to valve element 8 with pin 11, also is understood as valve element 8 and is provided with heavy One end outer peripheral face in hole 9 is provided with and coordinates the stopper slot 13 spacing to valve element 8, stopper slot 13 to be connected with counterbore 9 with pin 11, institute Stopper slot 13 is stated in 8 outer peripheral face of valve element circumferentially, 11 one end of the pin is located in installing hole 12, i.e. 11 one end end of pin Portion is positioned at (alternatively pin one end end face is concordant with cock outer peripheral face) in installing hole 12,11 one end of pin and 12 interference of installing hole Coordinate (also can use sunk screw as pin, now installing hole needs tapping thread), 11 other end of pin is positioned at stopper slot In 13, valve element 8 turns to 11 limited groove of pin, 13 other end restraining position from 11 limited groove of pin, 13 one end restraining position When valve element 8 just have rotated 180 °.

The stopper slot 13 is connected with counterbore 9 positioned at one end of the nearly outlet passageway 1b of 8 outer peripheral face of valve element, and stopper slot 13.

The installing hole 12 is provided with chamfering away from the hole wall of 8 one end of valve element, and the pin 11 is elastic cylindrical pin, elastic Aperture of the external diameter of straight pin more than installing hole 12.

The sealing mechanism includes sealing ring 14, and sealing ring 14 is O-ring, the outer peripheral face of 8 nearly valve rod of the valve element, 4 one end The indent 15 of annular is provided with, the sealing ring 14 is located in indent 15, the external diameter of sealing ring 14 is more than the external diameter of valve element 8, and External diameter of the internal diameter of sealing ring 14 less than valve element 8, the internal diameter of general sealing ring 14 are equal to the internal diameter of indent 15.

Four passages are divided into NG high position holes 8a, NG low level hole 8b, LP a high position hole 8c and LP low level hole 8d, the NG The axis of high-order hole 8a and the axis of LP high position hole 8c on the same line, and the axis of NG low levels hole 8b and LP low levels hole 8d Axis is on the same line；If during initial position, NG high position hole 8a and NG low level hole 8b are connected with two air inlets 7 respectively, When valve element 8 rotates 180 ° to restraining position, now LP high positions hole 8c and LP low level hole 8d is connected with two air inlets 7 respectively；Institute State the cambered surface between two air inlets 7 and be less than openings of the inlet channel 1a in 1 inwall of valve body, i.e., cambered surface between two air inlets 7 When being centrally located on the axis extended line of inlet channel 1a, the gas in inlet channel 1a can enter into two air inlets 7 In.

During assembling, first sealing ring 14 is encased in indent 15, during subsequently be tucked into valve element 8 from one end of centre bore 6 Until stopper slot 13 is aligned with installing hole 12 in heart hole 6, pin 11 is inserted into into installing hole 12 from the outside of installing hole 12 then In until one end of pin 11 is located in stopper slot 13, and the other end of pin 11 is completely into in installing hole 12, remaining peace Dress is same as the prior art.

During use, according to the position of source of the gas different choice valve element 8, if use NG as source of the gas, first by valve rod 4 Knob is removed, and is then extend in adjustment hole 5 by instrument until regulating tank 10 is inserted in the end of instrument, then by 8 turns of valve element The state that NG high position hole 8a and NG low level hole 8b are connected with two air inlets 7 respectively is moved, instrument is finally taken out and is reloaded By knob (as shown in Figure 5)；During if necessary to LP as source of the gas, first the knob on valve rod 4 is removed, is then stretched by instrument Enter in adjustment hole 5 the end insertion regulating tank 10 until instrument, valve element 8 is turned to into LP high position holes 8c and LP low level hole then The state that 8d is connected with two air inlets 7 respectively, finally taking out instrument and reload knob can (as shown in Figure 4).So According to the position of source of the gas adjusting spool 8, it is not necessary to again nozzle is dismounted.Remaining using method with prior art phase Together.

Above example is only preferred embodiment of the present utility model, and this utility model is not limited only to above example also to be permitted Permitted there are other structures to change, it is all to change in this utility model rights to independence claimed range, belong to this utility model protection domain.

Claims (6)

1. a kind of pair of gas shares plug valve, and it includes valve body (1), the rotation for being provided with inlet channel (1a) and outlet passageway (1b) The cock (2) being connected in valve body (1), the valve gap (3) for being fixed on valve body (1) end and it is rotatably connected on valve gap (3) Valve rod (4), one end of the valve rod (4) are located in valve body (1) and mutually circumferential spacing between cock (2), valve rod (4) it is another One end is located at the outside of valve body (1), it is characterised in that：The valve rod (4) is provided with axial adjustment hole (5), and the cock (2) sets The one end for having axial centre bore (6), the centre bore (6) is connected with outlet passageway (1b), one end of the adjustment hole (5) with The other end connection of centre bore (6), the other end of adjustment hole (5) are connected with outside, and the outer peripheral face of the cock (2) is provided with two The individual air inlet (7) connected with centre bore (6), and the axis of two air inlets (7) is mutually perpendicular to, and turns in the centre bore (6) Dynamic to be connected with valve element (8), one end end face of the nearly outlet passageway (1b) of the valve element (8) is provided with counterbore (9), the periphery of valve element (8) Face is provided with four passages being evenly distributed, and four passages are connected with counterbore (9), the valve element (8) and cock (2) Between be provided with limit valve element (8) can only back and forth 180 ° rotation position-limit mechanism, the position-limit mechanism to valve element (8) axial limiting, Sealing mechanism, and the nearly valve rod (4) of valve element (8) are provided between one end of the nearly valve rod (4) of the valve element (8) and centre bore (6) hole wall One end end face be provided with regulating tank (10)；Valve element (8) positioned at initial restraining position when, two passages in four passages point Do not connect with two air inlets (7), when valve element (8) rotates 180 ° to another restraining position, the another two in four passages is led to Pore is connected with two air inlets (7) respectively.

2. according to claim 1 pair of gas shares plug valve, it is characterised in that：The position-limit mechanism includes pin (11), Centre bore (6) hole wall is provided with installing hole (12), and installing hole (12) is through hole, valve element (8) outer peripheral face be provided with Pin (11) coordinates the stopper slot (13) spacing to valve element (8), the stopper slot (13) circumferentially to prolong in valve element (8) outer peripheral face Stretch, described pin (11) one end be located at installing hole (12) in, pin (11) other end be located at stopper slot (13) in, valve element (8) from Limited groove (13) one end restraining position of pin (11) turns to limited groove (13) other end restraining position of pin (11) just For 180 °.

3. according to claim 2 pair of gas shares plug valve, it is characterised in that：The stopper slot (13) is positioned at valve element (8) One end of the nearly outlet passageway of outer peripheral face (1b), and stopper slot (13) connected with counterbore (9).

4. according to claim 2 pair of gas shares plug valve, it is characterised in that：The installing hole (12) is away from valve element (8) The hole wall of one end is provided with chamfering, and the pin (11) is elastic cylindrical pin.

5. according to claim 1 pair of gas shares plug valve, it is characterised in that：The sealing mechanism includes sealing ring (14), the outer peripheral face of nearly valve rod (4) one end of the valve element (8) is provided with the indent (15) of annular, and the sealing ring (14) is located at In indent (15).

6. according to claim 1 pair of gas shares plug valve, it is characterised in that：Four passages are divided into NG high positions hole (8a), NG low levels hole (8b), LP high positions hole (8c) and LP low levels hole (8d), axis and the LP high positions hole of NG high positions hole (8a) (8c) on the same line, and the axis in the axis in NG low levels hole (8b) and LP low levels hole (8d) is on the same line for axis； If during initial position, NG high positions hole (8a) and NG low levels hole (8b) are connected with two air inlets (7) respectively, valve element (8) rotation 180 ° to restraining position when, now LP a high position hole (8c) and LP low levels hole (8d) connect with two air inlets (7) respectively；Described two Cambered surface between individual air inlet (7) is less than opening of the inlet channel (1a) in valve body (1) inwall.