CN209041576U - Double cut-off proportioning valves - Google Patents

Abstract

The utility model relates to a kind of double cut-off proportioning valves, it include: valve body, ratio valve chamber in valve body, shut-off valve and the air intake duct being connected to ratio valve chamber side wall there are two if, the gas off-take being connected to ratio valve chamber upper end, equipped with the valve port plate opposite with ratio valve chamber upper end and lower end passes through the valve rod that ratio valve chamber stretches out outside valve body, epithelium, the magnetic receiver pushing down epithelium and being connect with valve rod lower end, magnet in magnetic receiver, the cover pushing down epithelium outer rim and being connect with valve body, the lower pressure spring for the flange lower end that the cover inner bottom surface and magnetic receiver are equipped with is pushed down respectively in both ends, the electromagnet being connect with the cover lower end, the compression spring of valve port plate upper end and valve body inner top surface is pushed down respectively in both ends, upper end and the air inlet pressure stable hole that ratio valve chamber is connected to and lower end is opposite with epithelium upper end, upper end and ratio valve chamber are connected to and lower end is located at the outlet on the downside of epithelium Pressure stable hole.It adjusts sensitive when described double cut-off proportioning valve gaseous-pressure short-time fluctuations, it is preferable to have air inlet cutoff function safety.

Description

Double cut-off proportioning valves

Technical field

The utility model relates to gas valve field, especially a kind of double cut-off proportioning valves.

Background technique

Chinese Patent Application No.: the utility model of CN201620201556.1 discloses a kind of gas ratio valve, the combustion Gas proportioning valve includes: valve body, core assembly and driving return unit, wherein the first valve chamber, the second valve chamber and valve are formed in valve body Mouthful, the lower end of valve port is connected to the first valve chamber and upper end is connected to the second valve chamber, and the first valve chamber is connected with air inlet, the connection of the second valve chamber There is gas outlet；Core assembly is movably arranged on valve body between the position opened and close valve port along the vertical direction, spool Component includes spool and sealing element, and sealing element is located on spool, and sealing element is against below valve port when core assembly closes valve port； Driving return unit is connected with valve body and core assembly respectively, and driving return unit is for driving spool mobile to open or close valve Mouthful.The gas ratio valve there are when gaseous-pressure short-time fluctuations adjustment it is not sensitive enough, do not have the safety of air inlet cutoff function compared with The deficiency of difference；Therefore, it adjusts sensitive when designing a kind of gaseous-pressure short-time fluctuations, it is preferable to have air inlet cutoff function safety Double cut-off proportioning valves, become urgent problem to be solved.

Utility model content

The purpose of this utility model is to overcome current gas ratio valve, there are adjustment when gaseous-pressure short-time fluctuations It is not sensitive enough, do not have the poor deficiency of air inlet cutoff function safety；Therefore it provides tune when a kind of gaseous-pressure short-time fluctuations It is whole sensitive, have the preferably double cut-off proportioning valves of air inlet cutoff function safety.

The specific technical solution of the utility model is:

A kind of double cut-off proportioning valves, comprising: valve body, the ratio valve chamber in valve body, if there are two shut-off valve and with than The air intake duct of example valve chamber side wall connection, the gas off-take being connected to ratio valve chamber upper end, upper end is equipped with opposite with ratio valve chamber upper end Valve port plate and lower end pass through ratio valve chamber stretch out valve body outside valve rod, epithelium, the magnetic pushing down epithelium and being connect with valve rod lower end Iron seat, the magnet in magnetic receiver, the cover for covering magnetic receiver and magnet and pushing down epithelium outer rim and being connect with valve body, both ends The lower pressure spring for the flange lower end that the cover inner bottom surface and magnetic receiver are equipped with, the electromagnet connecting with the cover lower end, both ends are pushed down respectively The compression spring of valve port plate upper end and valve body inner top surface, upper end and the connection of ratio valve chamber are pushed down respectively and lower end is opposite with epithelium upper end Air inlet pressure stable hole, upper end and ratio valve chamber connection and lower end be located at the outlet pressure stable hole on the downside of epithelium.Double cutoffs For example valve in use, magnet spool passes through the electric current of setting, the iron core repulsion magnet of electromagnet simultaneously drives valve port plate through valve rod It moves upwards, so that valve port plate and ratio valve chamber upper end is detached from the aperture for reaching setting, open shut-off valve, the combustion entered from air intake duct Gas is flowed out through ratio valve chamber from gas outlet, and combustion gas carries out pressure stabilizing by epithelium；With air inlet pressure stable hole and outlet pressure stable hole, when into When air flue gaseous-pressure increases, act on thrust above epithelium and increase, valve rod drives valve port plate to move downward, valve port plate with than The aperture of example valve chamber upper end reduces, and throttling action increases, until the pressure difference of the combustion gas of the combustion gas and gas off-take of air intake duct keeps △ P guarantees that the gas flow of gas off-take output is constant；Conversely, acting on pushing away below epithelium when air intake duct gaseous-pressure reduces Power increases, and valve rod drives valve port plate to move upwards, and the aperture of valve port plate and ratio valve chamber upper end increases, and throttling action weakens, directly Pressure difference to the combustion gas of the combustion gas and gas off-take of air intake duct keeps △ P, guarantees that the gas flow of gas off-take output is constant；Work as outlet When road gaseous-pressure increases, the thrust acted below epithelium increases, and valve rod drives valve port plate to move upwards, valve port plate and ratio The aperture of valve chamber upper end increases, and throttling action weakens, until the pressure difference of the combustion gas of the combustion gas and gas off-take of air intake duct keeps △ P, Guarantee that the gas flow of gas off-take output is constant；Conversely, acting on the thrust below epithelium when gas off-take gaseous-pressure reduces Weakening, valve rod drives valve port plate to move downward, and the aperture of valve port plate and ratio valve chamber upper end reduces, and throttling action increases, until The pressure difference of the combustion gas of the combustion gas and gas off-take of air intake duct keeps △ P, guarantees that the gas flow of gas off-take output is constant.

Adjust sensitive when described double cut-off proportioning valve gaseous-pressure short-time fluctuations, voltage regulation result is good；Air intake duct is equipped with two A shut-off valve has air inlet cutoff function, and improves safety；Electric current of the magnet spool by setting, the iron of electromagnet Core repulsion magnet simultaneously drives valve port plate to move upwards through valve rod, is detached from valve port plate and ratio valve chamber upper end and reaches opening for setting Degree, and by adjusting by the electric current of magnet spool, the aperture of adjustment valve port plate and ratio valve chamber upper end, structure can be facilitated It is simple and practical.

Preferably, the air intake duct includes: the inlet chamber being connected to air inlet, one end is protruded into perpendicular logical in inlet chamber Road, one end is protruded into perpendicular channel and the transverse passage-way of the other end and the connection of ratio valve chamber side wall；Shut-off valve includes: that inner end and valve body connect The shell connect, the shut-off valve coil in shell, be set to shut-off valve coil in and outer end static iron core connected to the housing, outer end Opposite and inner end is pierced by the dynamic iron core of shell inner end with the inner end of static iron core, the closure disk connecting with dynamic iron core inner end, both ends point Shell inner end is not pushed down and blocks the taper pressure spring of disk outer end；The closure disk of one shut-off valve is opposite with perpendicular one end of the channel；It is another The closure disk of a shut-off valve is opposite with transverse passage-way one end.Stop valve structure is practical reliable.

Preferably, the inner end of the static iron core is equipped with frustum face；The outer end of dynamic iron core is equipped with the taper with frustum face Identical taper type counterbore；The top surface of taper type counterbore is equipped with buffering noise reduction cushion block.Frustum face and the cooperation of taper type counterbore can mention Adsorption capacity between high static iron core and dynamic iron core；Buffering noise reduction cushion block makes static iron core and dynamic iron core reduce strike note when adsorbing.

Preferably, the valve rod lower end is equipped with the epithelium pallet being located on the upside of epithelium.It is solid that epithelium pallet is conducive to bearing Determine epithelium.

Compared with prior art, the utility model has the beneficial effects that double cut-off proportioning valve gaseous-pressures are in short-term Adjust sensitive when fluctuation, voltage regulation result is good；Air intake duct is set there are two shut-off valve, has air inlet cutoff function, and improve safety； Magnet spool passes through the electric current of setting, and the iron core repulsion magnet of electromagnet simultaneously drives valve port plate to move upwards, makes through valve rod Valve port plate and ratio valve chamber upper end are detached from the aperture for reaching setting, and by adjusting passing through the electric current of magnet spool, energy side Just the aperture of valve port plate and ratio valve chamber upper end is adjusted, it is simple and practical in structure.Stop valve structure is practical reliable.Frustum face and frustum The cooperation of shape counterbore can improve the adsorption capacity between static iron core and dynamic iron core；When buffering noise reduction cushion block adsorbs static iron core and dynamic iron core Reduce strike note.Epithelium pallet is conducive to supporting and fixing epithelium.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the utility model.

In figure: valve body 1, ratio valve chamber 2, shut-off valve 3, flange 4, gas off-take 5, valve port plate 6, valve rod 7, epithelium 8, magnetic receiver 9, magnet 10, the cover 11, lower pressure spring 12, electromagnet 13, compression spring 14, air inlet pressure stable hole 15, outlet pressure stable hole 16, inlet chamber 17, it erects channel 18, transverse passage-way 19, shell 20, shut-off valve coil 21, static iron core 22, dynamic iron core 23, block disk 24, taper pressure spring 25, frustum face 26, taper type counterbore 27, buffering noise reduction cushion block 28, epithelium pallet 29.

Specific embodiment

The utility model is described further shown in reference to the accompanying drawing.

It is as shown in Fig. 1: a kind of double cut-off proportioning valves, comprising: valve body 1, the ratio valve chamber 2 in valve body 1 are equipped with two A shut-off valve 3 and the air intake duct being connected to 2 side wall of ratio valve chamber, the gas off-take 5 being connected to 2 upper end of ratio valve chamber, upper end is equipped with The valve port plate 6 and lower end opposite with 2 upper end of ratio valve chamber passes through the valve rod 7 that ratio valve chamber 2 stretches out outside valve body 1, and epithelium 8 is pushed down Epithelium 8 and the magnetic receiver 9 connecting with 7 lower end of valve rod, the magnet 10 in magnetic receiver 9 cover magnetic receiver 9 and magnet 10 and press Firmly the flange 4 that 11 inner bottom surface of the cover and magnetic receiver 9 are equipped with is pushed down at 8 outer rim of epithelium and the cover 11 connecting with valve body 1, both ends respectively Top in 6 upper end of valve port plate and valve body 1 is pushed down at the lower pressure spring 12 of lower end, the electromagnet 13 connecting with 11 lower end of the cover, both ends respectively The compression spring 14 in face, upper end and the connection of ratio valve chamber 2 and the lower end air inlet pressure stable hole 15 opposite with 8 upper end of epithelium, upper end and than The connection of example valve chamber 2 and lower end are located at the outlet pressure stable hole 16 of 8 downside of epithelium.The material of valve port plate 6 is nylon or rubber.

The air intake duct includes: the inlet chamber 17 being connected to air inlet (being not drawn into attached drawing), and inlet chamber is protruded into one end Perpendicular channel 18 in 17, one end is protruded into perpendicular channel 18 and the transverse passage-way 19 of the other end and the connection of 2 side wall of ratio valve chamber；Shut-off valve 3 include: the shell 20 that inner end is connect with valve body 1, the shut-off valve coil 21 in shell 20, be set in shut-off valve coil 21 and Opposite and inner end is pierced by the dynamic iron of 20 inner end of shell with the inner end of static iron core 22 for static iron core 22 that outer end is connected with shell 20, outer end Core 23, the closure disk 24 connecting with 23 inner end of dynamic iron core, both ends push down 20 inner end of shell respectively and block the taper of 24 outer end of disk Pressure spring 25；The closure disk 24 of one shut-off valve 3 is opposite with perpendicular 18 one end of channel；The closure disk 24 of another shut-off valve 3 leads to horizontal 19 one end of road is opposite.Block nylon or rubber that the material of disk 24 is lined with washer for outer end.

The inner end of the static iron core 22 is equipped with frustum face 26；The outer end of dynamic iron core 23 is equipped with the taper phase with frustum face 26 Same taper type counterbore 27；The top surface of taper type counterbore 27 is equipped with buffering noise reduction cushion block 28.Buffering noise reduction cushion block 28 material be Rubber.

7 lower end of valve rod is equipped with the epithelium pallet 29 for being located at 8 upside of epithelium.

Double cut-off proportioning valves are in use, the coil of electromagnet 13 passes through the electric current of setting, the iron core of electromagnet 13 Repulsion magnet 10 simultaneously drives valve port plate 6 to move upwards through valve rod 7, is detached from valve port plate 6 and 2 upper end of ratio valve chamber and reaches setting Aperture opens shut-off valve 3, and the combustion gas entered from air intake duct is flowed out through ratio valve chamber 2 from gas outlet, and combustion gas is carried out by epithelium 8 Pressure stabilizing；With air inlet pressure stable hole 15 and outlet pressure stable hole 16, when air intake duct gaseous-pressure increases, 8 top of epithelium is acted on Thrust increases, and valve rod 7 drives valve port plate 6 to move downward, and the aperture of valve port plate 6 and 2 upper end of ratio valve chamber reduces, and throttling action increases Greatly, until the pressure difference of the combustion gas of the combustion gas and gas off-take 5 of air intake duct keeps △ P, guarantee the gas flow of the output of gas off-take 5 not Become；Conversely, the thrust for acting on 8 lower section of epithelium increases, and valve rod 7 drives valve port plate 6 upward when air intake duct gaseous-pressure reduces The aperture of movement, valve port plate 6 and 2 upper end of ratio valve chamber increases, and throttling action weakens, until combustion gas and the gas off-take 5 of air intake duct Combustion gas pressure difference keep △ P, guarantee gas off-take 5 export gas flow it is constant；When 5 gaseous-pressure of gas off-take increases, make Thrust used in 8 lower section of epithelium increases, and valve rod 7 drives valve port plate 6 to move upwards, the aperture of valve port plate 6 and 2 upper end of ratio valve chamber Increase, throttling action weakens, until the pressure difference of the combustion gas of the combustion gas and gas off-take 5 of air intake duct keeps △ P, guarantees that gas off-take 5 is defeated Gas flow out is constant；Conversely, acting on the thrust decay of 8 lower section of epithelium, valve rod 7 when 5 gaseous-pressure of gas off-take reduces Valve port plate 6 is driven to move downward, the aperture of valve port plate 6 and 2 upper end of ratio valve chamber reduces, and throttling action increases, until air intake duct Combustion gas and gas off-take 5 combustion gas pressure difference keep △ P, guarantee gas off-take 5 export gas flow it is constant.

The beneficial effects of the utility model are: adjusted when described double cut-off proportioning valve gaseous-pressure short-time fluctuations it is sensitive, Voltage regulation result is good；Air intake duct is set there are two shut-off valve, has air inlet cutoff function, and improve safety；Magnet spool is logical The electric current of setting is crossed, the iron core repulsion magnet of electromagnet simultaneously drives valve port plate to move upwards, makes valve port plate and proportioning valve through valve rod Chamber upper end, which is detached from, reaches the aperture of setting, and by adjusting by the electric current of magnet spool, can facilitate adjustment valve port plate with The aperture of ratio valve chamber upper end, it is simple and practical in structure.Stop valve structure is practical reliable.Frustum face and the cooperation of taper type counterbore can mention Adsorption capacity between high static iron core and dynamic iron core；Buffering noise reduction cushion block makes static iron core and dynamic iron core reduce strike note when adsorbing.Skin Film pallet is conducive to supporting and fixing epithelium.

In addition to the implementation, in the range disclosed in claims of the utility model and specification, this is practical Novel technical characteristic or technical data can be reselected and be combined, to constitute new embodiment, these are all these Field technical staff is without carrying out what creative work can be realized, therefore the implementation that these the utility model are not described in Example also should be regarded as specific embodiment of the utility model and be within the protection scope of the utility model.

Claims (4)

1. a kind of double cut-off proportioning valves, comprising: valve body, characterized in that double cut-off proportioning valves further include: be set in valve body Ratio valve chamber, if there are two shut-off valve and the air intake duct that be connected to ratio valve chamber side wall, be connected to ratio valve chamber upper end out Air flue, upper end is equipped with the valve port plate opposite with ratio valve chamber upper end and lower end passes through the valve rod that ratio valve chamber stretches out outside valve body, skin Film, the magnetic receiver pushing down epithelium and connecting with valve rod lower end, the magnet in magnetic receiver cover magnetic receiver and magnet and push down The pushing for the flange lower end that the cover inner bottom surface and magnetic receiver are equipped with is pushed down at epithelium outer rim and the cover connecting with valve body, both ends respectively The compression spring of valve port plate upper end and valve body inner top surface is pushed down at spring, the electromagnet connecting with the cover lower end, both ends respectively, upper end with than The air inlet pressure stable hole that example valve chamber is connected to and lower end is opposite with epithelium upper end, upper end is with the connection of ratio valve chamber and lower end is located under epithelium The outlet pressure stable hole of side.

2. double cut-off proportioning valves according to claim 1, it is characterized in that: the air intake duct includes: to be connected to air inlet Inlet chamber, one end protrudes into the perpendicular channel in inlet chamber, and one end is protruded into perpendicular channel and the other end and ratio valve chamber side wall are connected to Transverse passage-way；Shut-off valve includes: the shell that inner end is connect with valve body, the shut-off valve coil in shell, is set to line stop valve In circle and outer end static iron core connected to the housing, outer end be opposite with the inner end of static iron core and inner end is pierced by the dynamic iron of shell inner end Core, the closure disk connecting with dynamic iron core inner end, both ends push down shell inner end respectively and block the taper pressure spring of disk outer end；One is cut Only the closure disk of valve is opposite with perpendicular one end of the channel；The closure disk of another shut-off valve is opposite with transverse passage-way one end.

3. double cut-off proportioning valves according to claim 2, it is characterized in that: the inner end of the static iron core is equipped with frustum face； The outer end of dynamic iron core is equipped with taper type counterbore identical with the taper in frustum face；The top surface of taper type counterbore is equipped with buffering silencing pad Block.

4. double cut-off proportioning valves according to claim 1 or 2 or 3, it is characterized in that: the valve rod lower end, which is equipped with, is located at skin Epithelium pallet on the upside of film.