WO2023103064A1 - Gas valve - Google Patents

Abstract

The present invention relates to the technical field of gas fittings, and provides a gas valve. The present invention solves the problems such as short service life of existing gas valves. The gas valve comprises a valve rod and a valve body; a valve core is provided inside a valve cavity; the valve core comprises a housing; the housing is provided with a big fire hole, a small fire hole, and a pilot light hole; an outer rubber sleeve is sleeved on the outer side of the housing; a small-fire air outlet hole, a big-fire air outlet hole, and a pilot-light air outlet hole radially run through the outer rubber sleeve; the valve body is provided with a big-fire air passage, a small-fire air passage, and a pilot-light air passage; the housing is internally provided with a movable ceramic chip and a static ceramic chip; the movable ceramic chip has a first fan-shaped opening; the housing is fixedly connected to a base; the base is supported on the static ceramic chip and is circumferentially and fixedly connected to the static ceramic chip; the housing is internally provided with an inner rubber sleeve; the inner rubber sleeve surrounds and seals the position where the movable ceramic chip is attached to the static ceramic chip; the inner rubber sleeve has a second fan-shaped opening that has the same angle as the first fan-shaped opening and axially overlaps the first fan-shaped opening. The present invention has the advantages of being good in sealability, good in applicability and long in service life, etc.

Description

gas valve technical field

The invention belongs to the technical field of gas fittings, in particular to a gas valve.

Background technique

Existing gas appliances (domestic gas appliances, commercial gas appliances, outdoor gas appliances, industrial gas appliances, etc.) control the flow of gas through a cock valve to adjust the size of the fire.

The existing cock valve includes a valve body, the valve body has a valve chamber, and a rotating cock is arranged in the valve chamber. The gas passing channel connects the gas inlet and the gas outlet of the valve cavity, so as to supply gas to the gas appliance.

technical problem

Because the manufacturing of gas cock valves belongs to foreign (Italy, Germany) processing technology, the process is complicated, domestic manufacturing has great limitations, and the manufacturing cost is high, especially the processing of the tapered surface of the outer wall of the valve core and the tapered surface of the valve body. The requirements are extremely high, resulting in a high scrap rate, and the plug valve is only suitable for low-pressure gas environment, which cannot meet the requirements of high- and medium-pressure gas, and the scope of application is small. The durability test of the plug valve has a limit of 100,000 switches, and the service life is not long enough . , when the hole diameter of the valve core outlet hole is required to be equal to 12mm or a larger flow rate is required, the valve body hole diameter and outer diameter of the plug valve need to be increased, and the outer diameter of the valve core is also increased, resulting in excessive friction on the cone surface , the torque of the plug valve is too large to be within the torque value stipulated by the national standard, which makes it unusable. In addition, when the plug valve core is slightly worn, and the sealant between the plug valve core and the valve body is reduced or flows into the vent hole Finally, there will be a gas leakage phenomenon, that is, the gas will enter the gas outlet of the small fire and the big fire from the gap between the cock spool and the valve body, causing the problem that the firepower section cannot be adjusted.

technical solution

The purpose of the present invention is to provide a gas valve with compact structure, good applicability, good stability in use and long service life to solve the above problems in the prior art.

The purpose of the present invention can be achieved through the following technical solutions: a gas valve, including a valve stem and a valve body, the valve body has a valve cavity, and the valve body has an air inlet port and a valve body that are both connected to the valve cavity. At the gas outlet end of large and small fires, a valve core is provided in the valve cavity, and it is characterized in that the outer wall of the valve stem is fitted with a sealing ring that is sealed on the inner wall of the valve cavity, and the valve core includes a It is a cylindrical shell connected by the axial limit of the end. The shell is provided with large fire holes, small fire holes and long open fire holes that penetrate radially and are all arc-shaped grooves. The small fire holes are located between the large fire holes and the large fire holes. Between the long flame holes and the gas passage area of the large fire hole is larger than the gas passage area of the small fire hole, the outer rubber sleeve is sealed on the inner wall of the valve cavity, and the outer rubber sleeve radially penetrates with the small fire hole. The small fire vent connected to the fire hole, the large fire vent connected to the large fire hole, and the permanent fire vent connected to the permanent fire hole, the valve body is provided with a large fire vent that connects the large and small fire vents to the large fire vent The valve body is provided with an eternal flame outlet end and the valve body is provided with an eternal flame air passage that connects the permanent flame outlet hole to the permanent flame outlet, so The housing described above is provided with a movable ceramic piece driven by the valve stem to rotate circumferentially. The movable ceramic piece has a fan-shaped opening, and the fan-shaped opening can communicate with the small fire hole, the big fire hole and the permanent fire hole at the same time. The shell The body is provided with a static ceramic piece attached to the moving ceramic piece. The static ceramic piece is axially penetrated with an air inlet connected to the air intake end. The static ceramic sheet is fixed in the circumferential direction, the center of the base is the air inlet connected to the air inlet, the inner end surface of the base is embedded with a sealing ring 2 sealed on the static ceramic sheet and the outer end surface of the base is embedded with a sealing ring The inner wall seal ring three, the outer end surface of the base has a number of limit protrusions embedded in the valve body, and the housing is provided with an inner rubber sleeve that is sealed between the housing and the moving tile and rotates synchronously with the moving tile , the inner rubber sleeve surrounds and seals the junction of the moving ceramic piece and the static ceramic piece, and the inner rubber sleeve has a second fan-shaped opening that is at the same angle as the first fan-shaped opening and axially overlaps.

The gas valve integrates the functions of permanent flame, small fire and high fire, and the valve core is assembled into an integrated structure, which is compact in structure and easy to assemble. The valve body does not need to process tapered holes, which is convenient for processing; Good performance, the gas valve has passed the durability test and can reach at least 50 Tens of thousands of times of opening and closing, long service life; the first sealing ring of the gas valve ensures the sealing of the outer wall of the valve stem, the second sealing ring ensures the sealing between the static ceramic plate and the base, and the second sealing ring provides elastic support to make the static The ceramic piece is always attached to the moving ceramic piece, and the wear gap is compensated to ensure the tightness between the moving piece and the static piece. The tightness between the inner rubber sleeve ensures the tightness between the moving ceramic piece and the static piece and between the moving piece and the shell. Therefore, the gas valve has good airtightness and no air leakage. It is not only suitable for Low-pressure gas environment is also suitable for medium-high pressure gas environment, with good applicability and good stability; when a larger flow rate is required, the air inlet hole can be enlarged, or the size of the valve core can be increased as a whole, but the dynamic porcelain is still used The opening and closing of the disc and the static ceramic disc, the torque will increase slightly without a linear surge, and it is within the torque specified by the national standard, which can meet the requirements of large flow.

In the above-mentioned gas valve, the valve body is threaded with a large fire adjusting screw that radially passes through the large fire air passage, and the inner end of the large fire adjustment screw is close to the inner end of the large and small fire gas outlets, and the small fire air passage Including small fire vent hole 1, small fire vent hole 2 and small fire vent hole 3, small fire vent hole 1 penetrates from the top of the valve body to the small fire vent hole and the top of the valve body is fixedly connected to the outer end of the small fire vent hole 1 The inner end of the small fire vent hole 3 is connected to the small fire vent hole 1, the outer end of the small fire vent hole 3 is connected to the inner wall of the large and small fire outlet, and the small fire vent hole 2 is connected to the valve on the side of the large fire adjustment screw. The body penetrates to the connection between the small fire vent hole 1 and the small fire vent hole 3, the small fire vent hole 2 is threaded with a small fire adjusting screw and the inner end of the small fire adjusting screw extends to the small fire vent hole 1 and the small fire vent hole The connecting part of the third, the described pilot flame ventilation channel includes the pilot flame ventilation hole 1 and the pilot flame ventilation hole 2, the pilot flame ventilation hole 1 penetrates from the top of the valve body to the pilot flame vent hole and the top of the valve body is fixedly connected with the pilot flame Vent hole 1 is a plugging piece that is blocked at the outer end, and the pilot flame vent hole 2 is connected from the valve body on the side of the high-fire adjusting screw to the gas outlet end of the pilot flame. The pilot flame vent hole 1 is connected to the middle of the pilot flame vent hole 2. The air hole two is threadedly connected with an ignition adjusting screw and the inner end of the ignition adjusting screw extends to the junction of the ignition opening two and the ignition opening one.

The constant flame adjustment screw, the low fire adjustment screw and the high fire adjustment screw are set on the same side, which is convenient for adjustment operation. The blocking part is a steel ball, and the blocking part can be a blocking cap during actual manufacture. By turning the pilot flame adjusting screw, the position where the inner end of the pilot flame regulating screw is blocked at the junction of the pilot flame vent hole 2 and the pilot flame vent hole 1 is changed, and the gas passing volume of the pilot flame air passage is changed, and the pilot flame is adjusted; By turning the low-fire adjustment screw, the position where the inner end of the low-fire adjustment screw is blocked at the connection between the small-fire vent hole 1 and the small-fire vent hole 3 is changed, and the low-fire air passage is changed to adjust the low-fire; By turning the large fire adjustment screw, the distance between the inner end of the large fire adjustment screw and the inner end of the large and small fire outlets is changed, and the overgas volume of the large fire air passage is changed to adjust the large fire.

In the above-mentioned gas valve, the inner end of the valve stem is limitedly inserted with a ferrule, and the ferrule has several teeth that extend axially and are inserted into the movable ceramic piece. The inner wall of the inner rubber sleeve has a clamping block that protrudes radially and protrudes radially from the part of the movable ceramic plate, and the two sides of each clamping block are respectively provided by the steps and the The step of the moving ceramic plate resists the limit, and the inner rubber sleeve is also sealed between the ferrule and the housing. The middle part of the inner wall of the valve stem has a circle of radially outwardly protruding bead, and a push The rod axially passes through the convex ring, and the push rod is sequentially set with springs, gasket 1, sealing ring 4, sealing ring 5, and gasket 2 from the outside to the inside, and the convex ring is located on the sealing ring 4 Between the sealing ring 5 and the sealing ring 5, a retaining spring is embedded on the push rod. The spring provides elastic force to make the sealing ring 4 seal on the convex ring and make the retaining spring resist the gasket 2 so that the sealing ring 5 seals on the convex ring. The valve body is provided with a solenoid valve, and the valve body has a retaining ring located between the base and the solenoid valve. The valve has a sealing part supported by a compression spring to seal on the retaining ring. The outer end of the push rod has a radially outwardly protruding shoulder and the inner end of the push rod axially passes through the ferrule, the moving ceramic piece, the static ceramic piece, Set with the base, the valve stem is provided with a driving mechanism that drives the push rod to touch the blocking part and provides reset force for the push rod when the valve stem rotates.

The outer end of the spring is in contact with the shoulder, and the inner end of the spring is in contact with the gasket 1. The elastic force of the spring makes the push rod have a tendency to move to the outside of the valve stem, so that the circlip is in contact with the gasket 2, and the gasket 2 is in contact with the sealing ring. 5. Sealing ring 5 is sealed on the convex ring. The elastic force of the spring acts on gasket 1. Gasket 1 is in contact with sealing ring 4 so that sealing ring 4 is always sealed on the convex ring. This avoids air leakage at the convex ring and improves the stability of use. Good; the setting of the ferrule is convenient for valve stem processing and push rod assembly. In this application, the inner end of the valve stem has two symmetrically arranged grooves, and the outer wall of the ferrule has radially outwardly convex protrusions embedded in the grooves, so that Realize the circumferential limit between the inner end of the valve stem and the ferrule. Of course, in actual manufacturing, a groove can be provided on the outer wall of the ferrule, and the inner end of the valve stem has a protrusion embedded in the groove to realize the inner end of the valve stem and the ferrule. Circumferential limit, the inner spline can also be processed on the inner end of the valve stem, and the outer wall of the ferrule has an outer spline engaged with the inner spline to realize the circumferential limit of the inner end of the valve stem and the ferrule; the ferrule passes through the ferrule The teeth drive the ceramic plate and the inner rubber sleeve to rotate synchronously, and the inner rubber sleeve ensures the tightness between the ferrule and the shell.

The solenoid valve is used to connect with the thermocouple, so that the gas valve has the function of flameout protection. When in use, the valve stem rotates, and the driving mechanism makes the push rod touch the sealing part. The flame of the gas appliance heats the thermocouple, and the temperature difference and voltage generated make it The solenoid valve overcomes the elastic force of the compression spring and absorbs the blocking part. The air inlet is connected to the air inlet and the air inlet through the air hole. After use, the mechanism is driven to reset the push rod; during use, when the flame of the gas appliance is extinguished, The temperature difference voltage disappears, the solenoid valve is powered off, and the pressure spring makes the sealing part seal the retaining ring again to seal the air hole, cut off the air supply, and ensure the safety of use.

In the above-mentioned gas valve, the driving mechanism includes a driving plate and a return spring sheathed on the valve stem, the returning spring is located between the driving plate and the valve body, and the outer wall of the driving plate has a protrusion for circumferential limit. Block, the outer end of the valve stem has a symmetrical chute, the outer end of the push rod has a radially outwardly protruding slider located in the chute, the return spring acts on the slider so that the slider is in contact with the drive plate, the valve A limit rod is radially pierced on the rod, and the end surface of the drive plate facing the limit rod has a mirror-symmetrical limit groove. One side of the limit groove is an inclined surface for the limit rod to slide. The return spring provides elastic force to make the limit The position slot is located in the limit slot. The driving disc is limited in the rotary switch housing in the circumferential direction. When in use, the valve stem is driven by the rotary switch to rotate counterclockwise. The limit rod is pressed against the inclined surface, so that the driving disc is displaced to the side of the valve body, and the driving disc acts on the slider. The slider moves along the chute to drive the push rod to touch the blocking part. After use, the valve stem drives the limit rod to reset, and the return spring provides elastic force to make the limit rod return to the bottom of the limit groove. The return spring also makes the push rod reset .

In the above-mentioned gas valve, the inner wall of the ferrule has a radially inwardly protruding blocking portion, and a sealing ring six sealed on the push rod is arranged between the blocking portion and the moving ceramic piece, and the ferrule The outer wall of the outer wall has a protruding ring that protrudes radially and is embedded in the inner wall of the inner rubber sleeve. The inner end of the static porcelain plate has an axially extending shrinking section toward the inner end of the moving ceramic piece. The outer diameter of the shrinking section is smaller than that of the static porcelain piece. The outer diameter of the piece, the moving ceramic piece has a fitting part that is equal in diameter to the reduced diameter section and fits together, the locking teeth and the fitting part are set with equal diameters, and the inner wall of the inner rubber sleeve is sealed between the locking teeth, the fitting part and the fitting part. The outer walls of the three diameter-reduced sections, the outer wall of the moving ceramic piece has a second protruding ring that protrudes radially and is embedded in the inner wall of the inner rubber sleeve. Six seal rings are set on the push rod and the outer edge of the seal ring is blocked by the inner wall of the ferrule. The tightness between the inner rubber sleeve, and the convex ring acts as a limit to the inner rubber sleeve to prevent the inner rubber sleeve from moving axially and preventing the inner rubber sleeve from being twisted under force, so that the inner rubber sleeve works stably and the diameter of the reduced diameter section The setting makes the moving ceramic piece and the static porcelain piece fit tightly, and the moving porcelain piece rotates smoothly. The outer wall of the locking teeth, the fitting part and the reduced diameter section of equal diameter make the inner wall of the inner rubber sleeve fit well, improve the sealing performance, and the high-pressure gas The impact will not cause the displacement of the moving ceramic piece and the static piece, the working stability is good, and the air intake is precise; To the limit function, avoid the axial movement of the inner rubber sleeve, and also prevent the inner rubber sleeve from being twisted under force, so that the inner rubber sleeve works stably.

In the above-mentioned gas valve, the outer wall of the outer rubber sleeve has several radially outwardly protruding convex rings 3, and the small fire vent hole, the large fire vent hole and the permanent flame vent hole are located between the two convex rings 3 and Between these two protruding rings three, be connected with protruding rib 1 that axially protrudes from the outer wall of the outer rubber sleeve and separates the small fire vent hole, the large fire vent hole and the permanent flame vent hole from each other and surrounds them. The three protruding rings make the outer wall of the outer rubber sleeve well sealed. The cooperation between the protruding ribs one and the two protruding rings three makes there is no gas blowing problem between the small fire vent, the large fire vent and the permanent fire vent. The small fire vent, the large fire The air outlet and the permanent flame outlet can only output gas separately, and the gas firepower section is precisely controlled.

In the above-mentioned gas valve, the inner wall of the housing has several protruding rings that protrude radially and are embedded in the inner rubber sleeve, and the outer wall of the housing has several protruding rings that protrude radially and are embedded in the outer rubber sleeve. Convex ring five. The four protruding rings make the sealing between the shell and the inner rubber sleeve good, and the four protruding rings play the role of limiting, avoiding the axial displacement of the outer wall of the inner rubber sleeve, avoiding the force torsion of the inner rubber sleeve, and the inner rubber sleeve works stably Good performance, the protruding ring five makes the sealing between the shell and the outer rubber sleeve good.

In the above-mentioned gas valve, the small fire hole, the big fire hole and the long flame hole are located between the two protruding rings five, and between the two protruding rings five are connected axially protruding from the shell outer wall Fire hole, large fire hole and ever-open flame hole are separated from each other and surrounded by convex ribs two. Each convex rib two cooperates with two convex rings five to separate the small fire hole, the large fire hole and the permanent flame hole from each other, so as to ensure that there is no gas blow-by problem between the small fire hole, the large fire hole and the permanent flame. The permanent fire holes can only output gas separately, which improves the control accuracy of the gas fire section.

In the above-mentioned gas valve, the inner end surface of the base has several lugs that protrude axially and are evenly distributed in the circumferential direction, the outer wall of the static ceramic plate has slots for the lugs to be inserted into, and the housing There is a snap-in opening for each lug to snap in, and the outer wall of the base has a protruding ring six that protrudes radially outward and is embedded in the inner wall of the outer rubber sleeve. In this way, the base and the shell are connected conveniently, the static ceramic piece is limited in the circumferential direction by the lug, and the six protruding rings further improve the sealing performance between the base and the inner wall of the outer rubber sleeve.

In the above-mentioned gas valve, the inner end of the valve stem is inserted into the casing and the valve stem has a shoulder for the end of the casing to abut against, and the outer wall of the inner end of the valve stem has a radially outwardly convex limit Positioning ring, the outer wall of the limiting ring has a guiding tapered surface, the inner wall of the housing has a limiting groove suitable for the limiting ring, and the outer wall of the inner end of the valve stem is embedded with a seal that is sealed in the housing. Circle seven. When assembling, the tapered surface acts as a guide to facilitate the insertion of the inner end of the valve stem into the casing, and then the limit ring is located in the limit groove, so that the casing and the valve stem are axially limited. After the gas valve core is assembled, the whole does not It will be loose and easy to transport, and the sealing ring seven ensures the sealing between the inner end of the valve stem and the inner wall of the housing .

Beneficial effect

Compared with the existing technology, the gas valve has a compact overall structure, good integration, small volume, and is easy to install and arrange. The gas valve has passed the durability test and can be opened and closed for at least 500,000 times. It has a long service life and does not require Pause, can ignite in time, the ignition method can choose the existing direct-rotary electronic ignition or push-type electronic ignition or pulse ignition with micro switch and other ignition methods, no need to change the use habits, the sealing of the valve core is good , to avoid air leakage and blow-by, and the sealing performance is excellent when it is closed. It can be used back and forth from an open flame, a small fire to a large fire, and the fire will not be cut off in the middle. The gas valve is suitable for low-pressure, medium-pressure and high-pressure gas environments, can meet the use requirements of large flow, can reduce the volume of the valve body of the large-flow gas valve, and has good applicability.

Description of drawings

picture 1 It is a three-dimensional structure diagram of the gas valve.

picture 2 It is a structural sectional view of the gas valve.

picture 3 It is a structural cross-sectional view of the gas valve at the cross-sections of the large fire air passage and the permanent fire air passage.

picture 4 It is a structural cross-sectional view of the gas valve at the cross-section of the small fire channel.

picture 5 It is a structural sectional view of the gas valve at the three sections of the constant flame adjusting screw, the low flame adjusting screw and the high flame adjusting screw.

picture 6 It is a three-dimensional structure diagram of the valve core in the gas valve.

picture 7 It is a structural sectional view of the valve core in the gas valve.

picture 8 It is a three-dimensional structure diagram of the valve core in the gas valve after removing the outer rubber sleeve.

picture 9 It is the three-dimensional structure diagram of the valve core in the gas valve after removing the outer rubber sleeve and the shell.

picture 10 It is a three-dimensional structure diagram of the ferrule in the gas valve.

picture 11 It is a three-dimensional structure diagram of the moving ceramic piece in the gas valve.

picture 12 It is a three-dimensional structure diagram of the inner rubber sleeve in the gas valve.

picture 13 It is the three-dimensional structure diagram of the static porcelain piece in the gas valve.

picture 14 It is a three-dimensional structure diagram of the base in the gas valve.

picture 15 It is a structural sectional view of the valve core when the gas valve is closed.

picture 16 It is a structural cross-sectional view of the valve core when the gas is discharged from the long open flame hole in the gas valve.

picture 17 It is a structural cross-sectional view of the valve core when the long open flame hole and the small flame hole in the gas valve are discharged.

picture 18 It is a structural cross-sectional view of the valve core when the gas is discharged from the long open flame hole, the small fire hole and the large fire hole in the gas valve.

In the figure, 1 , valve stem; 101 , protruding ring; 102 , limit ring; 2 , valve body; 201 , intake end; 202 , large fire air passage; 203 , small fire air passage; 2031 , small fire air vent one ; 2032 , the second small fire vent hole; 2033 , the third small fire vent hole; 204 , the long open fire vent hole; 2041 , the long open fire vent hole one; 2042 , the long open fire vent hole two ; 3. Big and small fire outlet; 4. Valve core; 41. Shell; 411. Large fire hole; 412. Small fire hole; 413. Long bright fire hole ; 414. Protrusion ring four; Two; 42 , outer rubber sleeve; 421 , small fire vent; 422 , large fire vent; 423 , permanent flame vent ; 424 , convex ring three; 425 , convex rib one; 43 , moving ceramic piece ; 1; 432 , convex ring 2; 44 , static porcelain plate; 441 , air inlet; 442 , diameter reducing section; 45 , base ; 451 , air inlet; 452 , limit protrusion; 453 , lug; 454 , Convex ring six; 46 , inner rubber sleeve; 461 , fan- shaped opening two; 462 , clamping block; 47 , ferrule; 471 , locking teeth ; 472 , blocking part ; , gas outlet end of permanent flame; 7 , sealing ring 2; 8 , sealing ring 3; 9 , high fire adjusting screw; 10 , plugging piece; 11 , low flame adjusting screw; 12 , permanent flame adjusting screw; 13 , push rod ; , slider; 14 , spring; 15 , gasket one; 16 , sealing ring four; 17 , sealing ring five; 18 , gasket two; 19 , retaining ring; 20 , solenoid valve; 21 , pressure spring ; 23 , drive plate ; 231 , bump; 232 , limit slot; 233 , inclined surface ; 24 , return spring; 25 , limit rod; 26 , sealing ring six; 27 , sealing ring seven .

BEST MODE FOR CARRYING OUT THE INVENTION

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

as shown in the picture 1 ,picture 2 ,picture 3 ,picture 4 ,picture 5 ,picture 6 ,picture 7 ,picture 8 and diagram 9 As shown, the gas valve includes a valve stem 1 and body 2 , valve body 2 There is a valve cavity inside, the valve body 2 have inlet ports that are both connected to the valve cavity 201 and size fire outlet 3 , there is a spool in the valve chamber 4 , stem 1 The outer wall of the outer wall is fitted with a sealing ring that is sealed on the inner wall of the valve cavity. 5 , spool 4 Included with stem 1 A cylindrical housing with an axial limit connection at the inner end 41 ,case 41 There are large fire holes that penetrate radially and are in the shape of arc grooves 411 , small fire hole 412 and flame hole 413 , small fire hole 412 in the fire hole 411 and flame hole 413 Between and large fire holes 411 The gas passing area is larger than the small fire hole 412 The gas flow area, the shell 41 The jacket has an outer rubber sleeve that is sealed on the inner wall of the valve cavity 42 , outer rubber sleeve 42 Radial through with small flame holes 412 Connected small fire vent 421 , and large fire hole 411 Connected Fire Vents 422 as well as with the eternal flame hole 413 Connected Eternal Flame Vents 423 , valve body 2 There is a gas outlet for making large and small fires 3 connected to the fire vent 422 fire vent 202 , so that the size of the fire outlet 3 Connected to the small fire vent 421 small fire vent 203 , valve body 2 There is an eternal flame outlet on the top 6 And the valve body 2 There is a vent hole inside to make the permanent flame 423 Connected to the gas outlet of the permanent flame 6 Eternal Flame Vent 204 ,case 41 Stem 1 The moving ceramic piece that drives the circumferential rotation 43 , moving ceramic 43 with scalloped opening 431 and fan-shaped opening 431 Can connect small flame holes at the same time 412 , large fire hole 411 and flame hole 413 ,case 41 Built-in ceramic tiles 43 Static tiles 44 , Static Porcelain 44 Axial through and connected to the intake port 201 air intake 441 ,case 41 fixed with base 45 , base 45 Supported on Static Porcelain 44 and with static ceramic 44 Circumferential fastening, base 45 The center is connected to the air intake hole 441 air intake 451 , base 45 The inner end face is embedded with a seal on the static ceramic sheet 44 seal ring two 7 and base 45 The outer end surface is embedded with a seal on the valve body 2 Inner wall sealing ring three 8 , base 45 The outer end face has several embedded valve body 2 limit protrusion 452 , the limit protrusion in this embodiment 452 Cylindrical and symmetrically arranged, the shell 41 Sealed in the housing 41 and moving tiles 43 follow-up tiles 43 Synchronous rotating inner rubber sleeve 46 , the inner rubber sleeve 46 moving tiles 43 And Static Porcelain 44 Sealed around the joint, inner rubber sleeve 46 with scalloped openings for a 431 Fan-shaped openings with the same angle and overlapping axially 461 .

In more detail, the valve body 2 The upper threaded connection has a radial passage through the fire 202 fire adjustment screw 9 , fire adjusting screw 9 The inner end is close to the gas outlet end of the large and small fire 3 inner end of the small fire vent 203 Includes a small fire vent 2031 2. Small fire vent hole 2 2032 and low fire vent three 2033 , small fire vent one 2031 From the valve body 2 Top through to small fire vent 421 And the valve body 2 The top is fixed with a small fire vent hole 2031 Outer end plugging 10 , low fire vent three 2033 The inner end is connected to the small fire vent hole one 2031 , low fire vent three 2033 The outer end penetrates to the gas outlet of the fire and fire 3 The inner wall of the small fire vent two 2032 adjusting screw from high heat 9 side body 2 Through to the small fire vent hole 1 2031 and low fire vent three 2033 The connecting part of the small fire vent hole two 2032 Threaded connection with low fire adjustment screw 11 And low fire adjustment screw 11 The inner end extends to the small fire vent hole one 2031 and low fire vent three 2033 The connecting point of the eternal flame ventilation channel 204 Includes an ever flame vent 2041 and Eternal Flame Vent Two 2042 , Eternal Flame Vent One 2041 From the valve body 2 The top runs through to the permanent flame vent 423 And the valve body 2 The top is fixed with a vent hole for the eternal flame. 2041 Outer end plugging 10 , Eternal Flame Vent II 2042 adjusting screw from high heat 9 side body 2 Pass through to the gas outlet of the permanent flame 6 , Eternal Flame Vent One 2041 Connecting to Everflame Vent 2 2042 In the middle of the Eternal Flame Vent II 2042 Threaded connection with pilot flame adjustment screw 12 and permanent flame adjustment screw 12 The inner end of the long open flame vent hole 2 2042 and the eternal flame vent one 2041 of the connection.

as shown in the picture 2 ,picture 7 ,picture 10 ,picture 11 ,picture 12 shown, the stem 1 The inner end of the inner end is plugged with a ferrule in a limited position 47 ,card cover 47 It has two axial extensions and is plugged into the moving ceramic piece 43 Detents 471 , inner rubber sleeve 46 The inner wall has a radially outward convex and each latch 471 Radial protruding active tiles 43 Clamping Blocks for Partial Circumferential Clamping 462 , each clamping block 462 The two sides of the sleeve are respectively 47 with steps and moving tiles 43 It has a step that interferes with the limit, and the inner rubber sleeve 46 also sealed in the ferrule 47 and shell 41 Between, Stem 1 In the middle of the inner wall, there is a radial convex ring 101 , a putter 13 Axial through the convex ring 101 middle putter 13 Springs are set in sequence from outside to inside 14 , gasket one 15 , sealing ring four 16 , sealing ring five 17 , gasket two 18 , convex ring 101 Located in the sealing ring four 16 and seal five 17 between putters 13 circlip 19 ,spring 14 Provide elastic force so that the sealing ring four 16 sealed to bead 101 and make the circlip 19 against spacer two 18 so that the sealing ring five 17 sealed to bead 101 , valve body 2 solenoid valve 20 , valve body 2 has a base 45 and solenoid valve 20 retaining ring between 205 , retaining ring 205 The center is the air hole 2051 , the intake end 201 Connected to the valve body 2 Solenoid valve 20 Mounted chamber, solenoid valve 20 with compression spring twenty one Support to seal against retaining ring 205 blockade twenty two , putter 13 The outer end has a radially outwardly convex shoulder and the push rod 13 The inner end of the shaft passes through the ferrule 47 , moving tiles 43 , static porcelain 44 , and base 45 setting, stem 1 on the valve stem 1 Drive the push rod when turning 13 top contact block twenty two and putter 13 A driving mechanism that provides a restoring force.

Drive mechanism including valve stem 1 The drive plate provided on the upper sleeve twenty three and return spring twenty four , return spring twenty four on drive plate twenty three and body 2 between drive discs twenty three The outer wall has a bump for circumferential limit 231 , stem 1 The outer end has a symmetrical chute, the push rod 13 The outer end of the slider has a radial protrusion and is located in the sliding groove 131 , return spring twenty four Acts on the slider 131 makes the slider 131 conflict with drive plate twenty three , stem 1 There is a limit rod pierced in the upper radial direction 25 , drives the disc twenty three Towards the stop bar 25 The end face has a mirror-symmetrical limit groove 232 , limit slot 232 One side of the groove wall is for the limit rod 25 sliding slope 233 , return spring twenty four Provide elastic force so that the limit groove 232 in the limit slot 232 middle.

card cover 47 The inner wall has a radially inwardly convex blocking portion 472 , blocking part 472 and moving tiles 43 push rod 13 The sealing ring six 26 ,card cover 47 The outer wall is radially convex and embedded in the inner rubber sleeve 46 convex ring of the inner wall 473 , as shown in the figure 13 Shown, Static Porcelain 44 towards the moving tile 43 The inner end has an axially extending reduced diameter section 442 , reduced diameter section 442 The outer diameter is smaller than the static ceramic plate 44 The outer diameter of the moving ceramic 43 with reduced diameter 442 Equal diameter and fit fit part, snap teeth 471 The same diameter as the fitting part, the inner rubber sleeve 46 The inner wall is sealed to the bayonet 471 , fitting part and reducing section 442 The outer wall of the three, moving porcelain 43 The outer wall is radially convex and embedded in the inner rubber sleeve 46 convex ring 2 432 . Static ceramic sheet in this embodiment 44 air intake 441 Inlet by Eternal Flame 441 , small fire air inlet 441 and fire intake 441 Composition, in turn corresponding to the long open flame hole 413 , small fire hole 412 and big fire hole 411 , to achieve the purpose of precise air intake.

Outer sleeve 42 The outer wall has three radially outward convex rings three 424 , small fire vent 421 , fire vent 422 and Eternal Flame Vent 423 Located on two of the convex ring three 424 between the two convex rings and three 424 There is an axial protrusion protruding from the outer rubber sleeve between them 42 Outer wall and small fire vent hole 421 , fire vent 422 and Eternal Flame Vent 423 ribs separated from each other 425 , another convex ring three 424 close to the base 45 set up. case 41 The inner wall has two radial protrusions and is embedded in the inner rubber sleeve 46 convex ring four 414 ,case 41 The outer wall has three radial protrusions and is embedded in the outer rubber sleeve 42 convex ring five 415 , small fire hole 412 , large fire hole 411 and flame hole 413 Located on two convex rings five 415 Between and between these two convex rings 5 415 is connected between the axially protruding housing 41 small fire hole 412 , large fire hole 411 and flame hole 413 Ribs separated from each other 416 , another convex ring five 415 close to the base 45 set up.

as shown in the picture 14 shown, base 45 The inner end face has two axially outwardly convex lugs uniformly distributed in the circumferential direction 453 , Static Porcelain 44 The outer wall has lugs for 453 Insertion slot, housing 41 with lugs for each 453 snap-in card entry, base 45 The outer wall is radially convex and embedded in the outer rubber sleeve 42 convex ring six 454 . Stem 1 Insert the inner end of the shell into the 41 And stem 1 With housing 41 end abutment shoulder, stem 1 The outer wall of the inner end has a radially outwardly protruding limit ring 102 , limit ring 102 The outer wall has a guiding tapered surface, the shell 41 The inner wall has a stop ring that fits into the 102 limit slot 232 , stem 1 The outer wall of the inner end is embedded with a seal in the shell 41 The sealing ring seven 27 .

The base of the gas valve 45 Through the limit protrusion 452 while limited to the valve body 2 , base 45 will not rotate, with the base 45 solid shell 41 and shell 41 outer rubber sleeve 42 will not rotate; as shown in the figure 15 As shown, when not in use, the moving ceramic 43 fan-shaped opening of a 431 sealed in static ceramic 44 , inner rubber sleeve 46 Scallop II 461 sealed in the housing 41 Inner wall, from the air inlet 451 The incoming gas flows to the static ceramic plate 44 air intake 441 , gas passive tiles 43 Sealed and cannot overflow; as shown 16 shown, to use, turn the stem 1 , stem 1 Moving tiles 43 and tube 46 Synchronous rotation, moving tiles 43 fan-shaped opening of a 431 First connected to the eternal flame hole 413 , the intake end 201 The incoming gas passes through the air inlet 451 , air intake 441 , and then through the fan-shaped opening a 431 , fan-shaped opening two 461 flow to long open flame hole 413 , then from the eternal flame vent 423 , Eternal Flame Airway 204 Flow to the gas outlet of the permanent flame 6 , for the burning of the eternal flame; 17 shown, subsequent rotation of the stem 1 , moving ceramic 43 fan-shaped opening of a 431 connected to small fire hole 412 , gas from the fan-shaped opening 431 , fan-shaped opening two 461 flow to small fire hole 412 , and vent the vent from a small fire 421 , small fire airway 203 Flow to the gas outlet of large and small fires 3 , for a small fire to burn, at this time the fan-shaped opening 431 still connected to the eternal flame hole 413 , eternal flame hole 413 Still intake air, the eternal flame is still burning; as shown in the figure 18 shown, then turn the stem 1 , moving ceramic 43 fan-shaped opening of a 431 connected to fire hole 411 , gas from the large fire hole 411 flow to fire vent 422 , fire vent 202 , and then from the large and small fire outlet 3 Outflow for the fire, at this time the fan-shaped opening 431 , fan-shaped opening two 461 still connected to the eternal flame hole 413 , small fire hole 412 , the long flame, small fire and high fire burn at the same time; turn the valve stem in the opposite direction 1 , stem 1 Moving tiles 43 and tube 46 Synchronous reset, turn off the large fire, small fire and permanent flame in turn; the gas valve realizes the functions of single permanent flame combustion, permanent flame plus small fire combustion, permanent flame plus small fire and large fire combustion, and has good applicability.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range .

Claims (10)

1. A gas valve, comprising a valve stem (1) and a valve body (2), the valve body (2) has a valve cavity inside, and the valve body (2) has an air inlet port communicating with the valve cavity (201) and large and small fire outlets (3), the valve cavity is provided with a valve core (4), which is characterized in that the outer wall of the valve stem (1) is fitted with a seal that is sealed on the inner wall of the valve cavity Ring 1 (5), the valve core (4) includes a cylindrical shell (41) that is connected to the inner end of the valve stem (1) in an axial limit, and the shell (41) is provided with a diameter The large fire hole (411), the small fire hole (412) and the permanent flame hole (413) are all in the shape of an arc groove, and the small fire hole (412) is located between the large fire hole (411) and the permanent flame hole (413). In addition, the gas passage area of the large fire hole (411) is larger than the gas passage area of the small fire hole (412), and the casing (41) is covered with an outer rubber sleeve (42) sealed on the inner wall of the valve cavity. The rubber sleeve (42) radially penetrates a small fire vent hole (421) connected with the small fire hole (412), a large fire vent hole (422) connected with the large fire hole (411) and a vent hole connected with the permanent flame hole (413). Eternal fire vent (423), the valve body (2) is provided with a large fire vent (202) that connects the large and small fire vents (3) to the large fire vent (422), and the large and small fire vents (3) ) is connected to the small fire air passage (203) of the small fire air outlet (421), the valve body (2) is provided with an eternal flame air outlet (6) and the valve body (2) is provided with an eternal flame air outlet (423 ) is connected to the permanent flame air duct (204) at the gas outlet end (6) of the permanent flame, and the housing (41) is provided with a moving ceramic plate (43) driven by the valve stem (1) to rotate in the circumferential direction. The moving porcelain piece (43) has fan-shaped opening one (431), and the fan-shaped opening one (431) can simultaneously communicate with the small fire hole (412), the big fire hole (411) and the permanent fire hole (413), and the shell ( 41) There is a static ceramic piece (44) attached to the moving ceramic piece (43) inside, and the static ceramic piece (44) is axially penetrated with an air inlet (441) connected to the air inlet end (201) , the housing (41) is fixedly connected with a base (45), the base (45) is supported on the static ceramic sheet (44) and is fixed in the circumferential direction with the static ceramic sheet (44), and the center of the base (45) is The air inlet (451) connected to the air inlet (441), the inner end surface of the base (45) is embedded with the sealing ring two (7) sealed on the static ceramic piece (44) and the outer end surface of the base (45) is embedded There are three sealing rings (8) sealed on the inner wall of the valve body (2), and the outer end surface of the base (45) has a number of limit protrusions (452) embedded in the valve body (2). There is an inner rubber sleeve (46) which is sealed between the housing (41) and the moving ceramic piece (43) and rotates synchronously with the moving ceramic piece (43). The inner rubber sleeve (46) will move the moving ceramic piece ( 43) and the static ceramic sheet (44) are surrounded and sealed, and the inner rubber sleeve (46) has a fan-shaped opening 2 (461) that has the same angle as the fan-shaped opening 1 (431) and axially overlaps.
2. The gas valve according to claim 1 , characterized in that, the valve body (2 ) is threaded with a fire adjusting screw (9) radially passing through the fire passage (202 ) , and the fire adjusting screw (9 ) The inner end of the inner end is close to the inner end of the large and small fire outlet (3), and the small fire air passage (203 ) includes the first small fire air vent (2031 ), the second small fire air vent (2032 ) and the third small fire air vent (2033 ), small fire vent hole one (2031 ) runs through the top of the valve body (2 ) to the small fire vent hole (421 ), and the top of the valve body (2 ) is fixedly connected with the outer end seal of the small fire vent hole one (2031). Blocking piece (10 ), the inner end of the small fire vent hole three (2033 ) is connected to the small fire vent hole one (2031 ), the outer end of the small fire vent hole three (2033 ) is connected to the large and small fire outlet end (3 ), the second low-fire vent hole (2032 ) runs through the valve body (2) on the side of the high-fire adjustment screw (9) to the connection between the first low-fire vent hole (2031 ) and the third low-fire vent hole (2033 ). The fire vent hole 2 (2032 ) is threaded with the low fire adjusting screw (11 ), and the inner end of the low fire adjusting screw (11) extends to the connection between the low fire vent hole 1 (2031 ) and the low fire vent hole 3 (2033 ) , the pilot flame vent (204 ) includes pilot flame vent one (2041 ) and pilot flame vent two (2042 ), the pilot flame vent one (2041 ) runs through from the top of the valve body (2 ) to the pilot flame outlet The air hole (423 ) and the top of the valve body (2) are fixedly connected with the plugging piece (10 ) that blocks the outer end of the first flame vent hole (2041), and the second flame vent hole (2042 ) is adjusted from the large flame adjustment screw (9 ) The side valve body (2 ) is connected to the gas outlet end of the pilot flame (6 ), the pilot flame vent hole 1 (2041 ) is connected to the middle part of the pilot flame vent hole 2 (2042), and the pilot flame vent hole 2 (2042 ) is threadedly connected with The pilot flame adjusting screw (12 ) and the inner end of the pilot flame adjusting screw (12 ) extend to the junction of pilot flame vent hole two (2042 ) and pilot flame vent hole one (2041 ).
3. The gas valve according to claim 1 or 2 , characterized in that, the inner end of the valve stem (1) is plugged with a ferrule (47 ) in a limited position in the circumferential direction, and the ferrule (47 ) has Several locking teeth (471) that extend axially and are inserted into the moving ceramic plate (43) , the inner wall of the inner rubber sleeve (46) has a radially outward protrusion and each locking tooth (471 ) radially protrudes The clamping blocks (462) clamped partly in the circumferential direction of the moving ceramic piece (43 ), the two sides of each clamping block (462 ) are respectively provided by the steps of the ferrule (47 ) and the steps of the moving ceramic piece (43 ). The step interferes with the limit, and the inner rubber sleeve (46 ) is also sealed between the ferrule (47 ) and the housing (41 ), and the middle part of the inner wall of the valve stem (1 ) has a circle of radial protrusions The convex ring (101 ), a push rod (13 ) axially penetrates in the convex ring (101 ), and the push rod (13 ) is sleeved with a spring (14 ) and a gasket one by one from the outside to the inside. (15 ), sealing ring four (16 ), sealing ring five (17 ), gasket two (18 ), the convex ring (101 ) is located between sealing ring four (16 ) and sealing ring five (17 ), A snap ring (19 ) is embedded on the push rod (13 ) , and the spring (14 ) provides elastic force to make the seal ring four (16 ) seal against the convex ring (101 ) and make the snap ring (19 ) resist the gasket two (18 ) so that the sealing ring five (17 ) is sealed on the protruding ring (101 ), the valve body (2 ) is provided with a solenoid valve (20 ), and the valve body (2 ) has a seat (45 ) and a solenoid valve The retaining ring (205) between (20 ) , the center of the retaining ring (205) is the air hole (2051 ), and the inlet port (201 ) is connected to the chamber of the valve body (2 ) for the installation of the solenoid valve (20 ), so The solenoid valve (20 ) described above has a plugging portion (22 ) supported by a compression spring (21) to seal against the retaining ring (205 ), the outer end of the push rod (13 ) has a radially outwardly protruding shoulder and the push rod The inner end of (13 ) axially passes through ferrule (47 ), moving porcelain piece (43 ), static porcelain piece (44 ), and base (45 ) to set, and the valve stem (1 ) is provided with a valve When the rod (1 ) rotates, it drives the push rod (13 ) to touch the blocking part (22 ) and provides a driving mechanism for the push rod (13) to reset .
4. The gas valve according to claim 3 , characterized in that, the drive mechanism includes a drive plate (23 ) and a return spring (24) sheathed on the valve stem (1) , and the return spring (24 ) is located on the drive plate (23 ) and the valve body (2 ), the outer wall of the driving disc (23) has a protrusion (231) for circumferential limit , and the outer end of the valve stem (1 ) has a symmetrical chute, The outer end of the push rod (13 ) has a slider (131) that protrudes radially and is located in the chute , and the return spring (24 ) acts on the slider (131 ) so that the slider (131) is in contact with the drive plate (23 ) , the valve stem (1 ) is radially pierced with a limit rod (25 ), and the end face of the drive plate (23 ) facing the limit rod (25 ) has a mirror-symmetrical limit groove (232 ), and the limit groove (232 ) One side of the groove wall is an inclined surface (233) for the sliding of the limiting rod (25) , and the return spring (24 ) provides elastic force so that the limiting groove (232 ) is located in the limiting groove (232 ) .
5. The gas valve according to claim 4 , characterized in that, the inner wall of the ferrule (47) has a radially inwardly convex blocking portion (472 ), and the blocking portion (472 ) and the moving ceramic piece (43 ) is provided with sealing ring six (26 ) sealed on the push rod (13), and the outer wall of the ferrule (47) has a convex ring one ( 473 ), the static ceramic piece (44 ) has an axially extending diameter-reducing section (442 ) toward the inner end of the moving ceramic piece (43 ) , and the outer diameter of the diameter-reducing section (442 ) is smaller than that of the static ceramic piece (44 ) The outer diameter of the moving ceramic piece (43 ) has a fitting part that is equal in diameter to the reduced diameter section (442 ), and the locking teeth (471 ) are set to be equal in diameter to the fitting part, and the inner rubber sleeve (46 ) The inner wall of the moving ceramic piece (43 ) is radially convex and embedded in the inner rubber sleeve (46 ). The inner wall of the convex ring II (432 ) .
6. The gas valve according to claim 5 , characterized in that, the outer wall of the outer rubber sleeve (42) has several radially outwardly protruding convex rings (424 ), small fire outlet holes (421 ), and large fire outlet holes. The air hole (422 ) and the permanent flame air outlet (423 ) are located between the two protruding rings three (424 ), and the two protruding rings three (424 ) are connected with an axially protruding outer wall of the outer rubber sleeve (42) And the small fire vent hole (421 ), the large fire vent hole (422 ) and the long flame vent hole (423 ) are separated from each other to surround the rib one (425 ) .
7. The gas valve according to claim 6 , characterized in that, the inner wall of the housing (41) has several protruding rings (414) that protrude radially outward and are embedded in the inner rubber sleeve (46 ) , and the housing The outer wall of (41 ) has several protruding rings five (415 ) that protrude radially outward and are embedded in the outer rubber sleeve (42).
8. The gas valve according to claim 7 , characterized in that the small fire hole (412 ), the big fire hole (411 ) and the long open fire hole (413 ) are located between the two protruding rings five (415 ) and the two Between the five convex rings (415 ), there are ribs that axially protrude from the outer wall of the casing (41 ) and separate and surround the small fire hole (412 ), the large fire hole (411 ) and the long open fire hole (413 ) Two (416 ) .
9. The gas valve according to claim 8 , characterized in that, the inner end surface of the base (45) has several lugs (453 ) that protrude outward axially and are evenly distributed in the circumferential direction, and the static ceramic sheet (44 ) The outer wall of the base (45 ) has slots for inserting the lugs (453), the housing (41 ) has snap-in openings for the lugs (453 ) to snap in, and the outer wall of the base (45) has a radially outward protrusion And be embedded in the convex ring six (454 ) of the inner wall of the outer rubber sleeve (42).
10. The gas valve according to claim 1 or 2 , characterized in that, the inner end of the valve stem (1) is inserted into the housing (41 ) and the valve stem (1) has a The outer wall of the inner end of the valve stem (1 ) has a radially outwardly protruding stop ring (102 ), the outer wall of the stop ring (102 ) has a guiding tapered surface, and the housing ( The inner wall of 41 ) has a limit groove (232 ) adapted to the limit ring (102 ) , and the outer wall of the inner end of the valve stem (1 ) is embedded with a sealing ring seven (27) sealed in the housing (41 ) .