CN117847525B - Gas stove - Google Patents

Abstract

The invention relates to the technical field of burners, in particular to a gas furnace, an outer tube is inserted into the side wall of the furnace body, an inner tube is arranged in the outer tube, an impeller mechanism is rotatably arranged in the inner tube, a blocking piece is positioned on one side of the impeller mechanism facing the furnace body and is in sliding connection with the impeller mechanism, a flow channel is arranged in the impeller mechanism, in an initial state, the blocking piece is close to the impeller mechanism and forms a barrier on the flow channel, the blocking piece is connected with the outer tube through a reset spring, an elastic piece is connected with the blocking piece and the inner tube, the outer tube is provided with a combustion cavity close to the furnace body, a scraping strip is attached to the inner wall of the combustion cavity, a transmission mechanism is connected between the scraping strip and the blocking piece, when the blocking piece moves away from the impeller mechanism, the scraping strip is driven by the transmission mechanism to withdraw from the combustion cavity, and when the blocking piece moves towards the impeller mechanism, the scraping strip is driven by the transmission mechanism to extend into the combustion cavity. The gas stove solves the problem of time and labor waste caused by manual cleaning of combustion products in the nozzle through the design of the scraping strip, the blocking piece and the impeller mechanism.

Description

Gas stove

Technical Field

The invention relates to the technical field of burners, in particular to a gas furnace.

Background

The gas furnace is a periodic operation furnace, and is mainly used for quenching, annealing and aging of high-chromium and high-manganese steel castings, spheroidal graphite cast iron, rollers, steel balls, 45 steel, stainless steel and the like and heat treatment of various mechanical parts.

The chinese patent with publication number CN109404908B discloses a nozzle for a forging gas heating furnace, which divides gas into two streams and respectively introduces into an upper mixing chamber and a lower mixing chamber of a nozzle when in use, and simultaneously divides air into two streams and respectively introduces into the upper mixing chamber and the lower mixing chamber. The fuel gas and air of the upper mixing chamber are sprayed into a hearth of the forging fuel gas heating furnace after being mixed and burnt, and an upper circulating flame is formed at the upper part of the hearth; the fuel gas and air of the lower mixing chamber are sprayed into the hearth of the forging fuel gas heating furnace after being mixed and burnt, and a lower circulating flame is formed at the lower part of the hearth. By adjusting the air flow rates of the upper and lower circulating flames, local overheating of the metal blank in the hearth in the heating process can be prevented.

However, in practice, the nozzle of the forging gas furnace still has the disadvantages: when the fuel gas and the air are combusted, combustion products such as carbon dirt, dust and the like are deposited in the nozzle, and in order to avoid the combustion products affecting the heat treatment of the metal blank, operators need to clean the combustion products in time and manually, thereby consuming time and labor.

Disclosure of Invention

The invention provides a gas furnace, which aims to solve the problem that the manual cleaning of combustion products in a nozzle wastes time and labor in the related art.

The gas furnace comprises a furnace body and a gas burner, wherein the gas burner comprises an outer tube, an impeller mechanism, a blocking piece, an elastic piece and a scraping strip, the outer tube is inserted into the side wall of the furnace body and is communicated with the furnace body, a coaxial inner tube is arranged in the outer tube, an air source is externally connected to the outer tube, and a gas source is externally connected to the inner tube; the impeller mechanism is rotatably arranged in the inner pipe, and can be driven to rotate when fuel gas is introduced into the inner pipe; the blocking piece is positioned at one side of the impeller mechanism facing the furnace body and is in sliding connection with the impeller mechanism along the axial direction of the inner tube, a flow passage for passing fuel gas is arranged in the impeller mechanism, and in an initial state, the blocking piece is closely adjacent to the impeller mechanism and forms a barrier on the flow passage; the blocking piece is connected with the outer tube through a reset spring; the elastic piece is connected with the blocking piece and the inner tube, so that the elastic piece can deform and store force when the blocking piece rotates along with the impeller mechanism; the outer tube has the combustion chamber of next-door neighbour furnace body, scrapes the strip and is located the combustion chamber and laminate with the inner wall in combustion chamber, is connected with drive mechanism between scraping strip and the stifled piece, and when the stifled piece deviates from impeller mechanism motion, drives scraping strip through drive mechanism and withdraws from the combustion chamber, and when the stifled piece moved towards impeller mechanism, it stretches into the combustion chamber to drive scraping strip through drive mechanism.

Preferably, the impeller mechanism comprises a rotary drum and a flow dividing drum, the rotary drum is rotatably arranged in the inner tube, the inner peripheral wall of the rotary drum is provided with a plurality of blades which are distributed at intervals along the circumferential direction of the rotary drum, and the inner space of the rotary drum forms a flow passage; the inner space of the inner tube forms an inner cavity, an annular cavity is formed between the inner tube and the outer tube, the peripheral wall of the inner tube is provided with an annular groove which is communicated with the inner cavity and the annular cavity, and the annular groove is positioned at one side of the rotary drum adjacent to the furnace body; the shunt tube is coaxially connected with the rotary drum and is in rotary fit in the annular groove, the wall of the shunt tube is of a fence structure, and the fence structure is communicated with the annular cavity and the inner cavity.

Preferably, the blocking piece comprises a movable plate and a sleeve, wherein the movable plate is circular and is coaxially matched in the inner tube, and in an initial state, the movable plate is closely adjacent to the rotary drum and forms a block on the flow passage; the sleeve is coaxial with the fly leaf and locate one side that the fly leaf deviates from the rotary drum, the rotary drum is equipped with the slip and runs through the fly leaf and wear to locate the interior central pole of sleeve, telescopic inner peripheral wall is equipped with the spout that extends along telescopic axial, central pole elastic sliding connection has the slider, the one end that the slider deviates from central pole is circular-arc and sliding fit in the spout, elastic component connecting sleeve and inner tube, when the rotary drum rotated, it rotates through slider and spout drive sleeve, the sleeve drives elastic component and holds the power, when elastic component holds the power to the setting value, the slider deviate from the spout through its circular-arc tip.

Preferably, the inner wall of the inner tube is provided with a plurality of guide bars uniformly distributed along the circumferential direction of the inner tube, the guide bars extend along the axial direction of the inner tube, both ends of the guide bars are pointed, and a guide groove is formed between two adjacent guide bars; the periphery of fly leaf is equipped with a plurality of guide blocks along its circumference evenly distributed, and the quantity of guide block and guide slot equals and mutually matches, and the guide block is sharp edge form also at the ascending both ends of axial of inner tube, and the fly leaf slides in the inner tube, and the guide block can be restricted to slide in the guide slot.

Preferably, the elastic piece comprises a lantern ring and a coil spring, and the lantern ring is sleeved on the sleeve in a sliding way; the coil spring is coaxial with the lantern ring and is positioned between the lantern ring and the inner tube, one end of the coil spring is fixedly connected with the lantern ring, and the other end of the coil spring is fixedly connected with the inner tube.

Preferably, the transmission mechanism comprises a support shaft and a bar frame, a coaxial inner cylinder is arranged in the outer tube, the inner cylinder is positioned at one side of the inner tube facing the furnace body, a through groove is formed in the peripheral wall of the inner cylinder, the support shaft extends along the tangential direction of the inner cylinder and is fixed in the inner cylinder, and the support shaft is adjacent to the center of the through groove; the end part of the sleeve, which is far away from the rotary drum, is provided with a mounting plate, the mounting plate is positioned in the inner barrel, one end of the bar frame is hinged on the mounting plate, a waist groove is formed in the bar frame, and the bar frame is sleeved on the support shaft through the waist groove; a telescopic rod penetrating through the groove is arranged between the bar frame and the scraping strip, one end of the telescopic rod is fixedly connected with the bar frame, and the other end of the telescopic rod is hinged with the scraping strip.

Preferably, the transmission mechanism further comprises a rotating plate and a guide rail, the rotating plate is circular and is arranged on one side of the inner cylinder, facing the furnace body, the rotating plate is rotatably arranged on the outer pipe, the rotating plate divides the space in the pipe of the outer pipe into two parts, one part of the space is adjacent to the inner pipe and forms a mixing cavity, the other part of the space is adjacent to the furnace body and forms a combustion cavity, air holes communicated with the mixing cavity and the combustion cavity are uniformly distributed on the rotating plate, and the rotating plate is provided with an avoidance groove for a scraping strip to pass through; the reset spring is positioned in the inner cylinder, and two ends of the spring are fixedly connected with the mounting plate and the rotating plate respectively; the guide rail is fixed in the rotor plate and extends along the axial of outer tube, scrapes strip and guide rail sliding fit.

Preferably, the outer tube is conical towards the end part of the furnace body, the length direction of the scraping strip is consistent with the axial direction of the outer tube, and the scraping strip is bent and matched with the conical end part of the outer tube.

Preferably, the gas burners are divided into two groups, the two groups of gas burners are in one-to-one correspondence with the front side wall and the rear side wall of the furnace body, each group of gas burners comprises a plurality of gas burners which are distributed at intervals in the left-right direction, and the gas burners are connected with the corresponding side walls of the furnace body.

Preferably, the gas source comprises two gas pipes and a gas tank, the two gas pipes are respectively arranged on the front side and the rear side of the furnace body, the two gas pipes are in one-to-one correspondence with two groups of gas burners, the inner pipe in the gas burner is communicated with the corresponding gas pipe, the gas tank is arranged on the outer side of the furnace body, and the gas pipes are communicated with the gas tank through a first pipeline; the air source comprises two air pipes and air pumps, the two air pipes are respectively arranged on the front side and the rear side of the furnace body, the two air pipes are in one-to-one correspondence with two groups of gas burners, and the outer pipe of the gas burners is communicated with the corresponding air pipes; the air pump is arranged at the top end of the furnace body, and the air pipe is communicated with the air pump through the pipe group.

By adopting the technical scheme, the invention has the beneficial effects that:

When the gas and the air are mixed and heat-treat the workpiece in the furnace body, the gas can drive the blocking piece to rotate through the impeller mechanism at the same time, and the elastic piece is deformed and stores force under the action of the blocking piece. When gas stops letting in, the elastic component drives the blocking component to rotate, and the blocking component drives the scraping strip to rotate, so that the scraping strip can scrape the combustion products attached to the inner wall of the combustion chamber, and then the combustion products can be blown out of the combustion chamber through air, so that the impurities are thoroughly removed.

Drawings

Fig. 1 is a schematic perspective view of a gas burner of the present invention.

Fig. 2 is a further schematic perspective view of a gas burner according to the invention.

FIG. 3 is a schematic view of a partial structure of a gas burner to a furnace body portion without introducing gas according to the present invention.

Fig. 4 is a perspective sectional view of a gas burner of the present invention when gas is introduced.

Fig. 5 is a schematic view of the impeller mechanism to plug portion structure of the present invention.

Fig. 6 is a perspective cross-sectional view of the drive mechanism to scraper bar section of the present invention.

Fig. 7 is a perspective cross-sectional view of the outer tube to inner tube portion of the present invention.

Reference numerals:

100. A furnace body; 101. a sliding door; 102. a chimney;

200. A gas burner; 1. an outer tube; 11. a combustion chamber; 12. a connecting rod; 13. a gas pipe; 2. scraping the strip; 3. an inner tube; 31. a conducting bar; 32. an air tube; 33. an air pump; 34. a main pipe; 35. dividing the pipeline; 4. a return spring; 5. an impeller mechanism; 51. a rotating drum; 511. a blade; 512. a mounting frame; 513. a central rod; 5131. a slide block; 52. a shunt barrel; 521. a shunt channel; 6. a blocking piece; 61. a movable plate; 611. a guide block; 62. a sleeve; 621. a chute; 622. a mounting plate; 7. an elastic member; 71. a collar; 72. a coil spring; 8. a transmission mechanism; 81. a support shaft; 82. a bar frame; 83. an inner cylinder; 84. a telescopic rod; 85. a rotating plate; 851. air holes; 852. an avoidance groove; 86. a guide bar; 87. and rotating the block.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The gas burner of the present invention will be described with reference to fig. 1 to 7.

In example 1, as shown in fig. 1 to 7, the gas burner according to the present invention includes a burner body 100 and a gas burner 200, wherein the burner body 100 extends in the right-left direction and has a rectangular parallelepiped shape, and the gas burner 200 is provided on the burner body 100. The gas burner 200 comprises an outer tube 1, an impeller mechanism 5, a blocking piece 6, an elastic piece 7 and a scraping strip 2.

The outer tube 1 extends along the fore-and-aft direction and inserts the lateral wall of locating the furnace body 100, and outer tube 1 and the lateral wall fixed connection of furnace body 100, outer tube 1 and furnace body 100 intercommunication are equipped with coaxial inner tube 3 in the outer tube 1, and the length of inner tube 3 is less than the length of outer tube 1, and the tip that inner tube 3 deviates from furnace body 100 and the tip parallel and level that outer tube 1 deviates from furnace body 100, and these two tip integrated into one piece. The outer tube 1 is externally connected with an air source, and the inner tube 3 is externally connected with a fuel gas source. The impeller mechanism 5 is rotatably arranged in the inner pipe 3, and when the fuel gas is introduced into the inner pipe 3, the impeller mechanism 5 can be driven to rotate under the action of self pressure.

The blocking piece 6 is positioned on one side of the impeller mechanism 5 facing the furnace body 100, and the blocking piece 6 is in limiting sliding connection with the impeller mechanism 5 along the axial direction of the inner tube 3. The impeller mechanism 5 has a flow passage for the passage of the fuel gas therein, and in the initial state, the blocking member 6 is in close proximity to the impeller mechanism 5 and forms a barrier on the flow passage. The blocking piece 6 is connected with the outer tube 1 through a return spring 4, and the return spring 4 is used for resetting the blocking piece 6 after sliding.

The elastic piece 7 is connected with the blocking piece 6 and the inner tube 3, so that when the blocking piece 6 rotates along with the impeller mechanism 5, the elastic piece 7 can deform and store force, and when the fuel gas stops acting on the impeller mechanism 5, the elastic piece 7 can release force and drive the blocking piece 6 to rotate reversely. The outer tube 1 has a combustion chamber 11 in close proximity to the furnace body 100, the combustion chamber 11 being located on the side of the inner tube 3 facing the furnace body 100, the combustion chamber 11 having a source of fire therein, which may be an existing spark generating device, for ignition by the generation of an electric spark. In the initial state, the scraping strip 2 is positioned in the combustion chamber 11 and is attached to the inner wall of the combustion chamber 11. The scraper 2 and the blocking piece 6 are connected with a transmission mechanism 8, when the blocking piece 6 moves away from the impeller mechanism 5, the scraper 2 is driven to exit the combustion chamber 11 through the transmission mechanism 8, and when the blocking piece 6 moves towards the impeller mechanism 5, the scraper 2 is driven to extend into the combustion chamber 11 through the transmission mechanism 8.

When in use, the air source is used for introducing air into the outer pipe 1, and the gas source is used for introducing gas into the inner pipe 3. The gas firstly acts on the blocking piece 6 after passing through the flow passage and impacts the blocking piece 6 under the action of self pressure, so that the flow passage is opened by the blocking piece 6, the gas can flow into the outer tube 1 and be mixed with air, then the mixed gas and air flow towards the combustion chamber 11 together, are ignited by a fire source in the combustion chamber 11 and are further sprayed into the furnace body 100, and flame is formed in the furnace body 100, so that the heat treatment of the workpiece in the furnace body 100 is realized. Meanwhile, the flushed blocking piece 6 can slide towards the direction deviating from the impeller mechanism 5, and the blocking piece 6 drives the scraping strip 2 to exit the combustion cavity 11 through the transmission mechanism 8, so that the influence of fuel gas and air on the scraping strip 2 during combustion in the combustion cavity 11 is avoided. Simultaneously, the gas also can bring the impeller mechanism 5 to rotate when circulating, and the impeller mechanism 5 drives the blocking piece 6 to synchronously rotate, so that the elastic piece 7 starts to deform and store force.

When the heat treatment of the workpiece is completed and the gas and air are no longer introduced, the gas pressure acting on the impeller mechanism 5 and the plug 6 is also lost. Then, the return spring 4 starts to push the blocking piece 6 to slide towards the impeller mechanism 5, the blocking piece 6 starts to axially return, and the scraping strip 2 is driven to stretch into the combustion cavity 11 again. The elastic piece 7 also starts to release force and drives the blocking piece 6 to rotate reversely, the blocking piece 6 starts to reset circumferentially, the blocking piece 6 drives the scraping strip 2 to rotate synchronously through the transmission mechanism 8, the scraping strip 2 starts to scrape combustion products attached to the inner wall of the combustion chamber 11, and it is understood that the combustion products are usually carbon dirt, soot and other impurities, and therefore the scraping strip 2 automatically scrapes the impurities on the inner wall of the combustion chamber 11. The scraped impurities can gather in the inner space of the combustion chamber 11, at this time, only air is independently introduced, and the air can blow the impurities out of the combustion chamber 11, so that the impurities are thoroughly removed, and meanwhile, the manual cleaning of combustion products is avoided, and the time and the labor are saved.

The impeller mechanism 5 includes a rotor 51 and a flow dividing tube 52, the rotor 51 is coaxially and rotatably mounted in the inner tube 3 with respect to the inner tube 3, and an outer peripheral surface of the rotor 51 is fitted to an inner wall of the inner tube 3. The inner peripheral wall of the drum 51 is provided with a plurality of blades 511 equally spaced along the circumferential direction thereof, and the inner space of the drum 51 constitutes the flow path. The inner space of the inner tube 3 forms an inner cavity, and an annular cavity is formed between the inner tube 3 and the outer tube 1, and the inner cavity is communicated with a fuel gas source and the annular cavity is communicated with an air source.

The peripheral wall of the inner tube 3 is provided with a coaxial ring groove, the ring groove is communicated with the inner cavity and the ring cavity, the ring groove is positioned on one side of the rotary drum 51 adjacent to the furnace body 100, specifically, the ring groove divides the inner tube 3 into two sections, two connecting rods 12 are arranged between the two sections, the two connecting rods 12 are positioned on the outer side of the inner tube 3 and are spaced along the circumferential direction of the inner tube 3, the connecting rods 12 extend along the axial direction of the inner tube 3, two ends of the connecting rods 12 are fixedly connected with the two sections respectively, and the connecting rods 12 are used for avoiding separation of the two sections. The shunt tube 52 is coaxially connected with the rotary drum 51, the shunt tube 52 is rotationally matched in the annular groove, the wall of the shunt tube 52 is of a fence structure, the fence structure is communicated with the annular cavity and the inner cavity, and concretely, the wall of the shunt tube 52 is provided with a plurality of shunt grooves 521 distributed at equal intervals along the circumferential direction of the shunt tube, and the plurality of shunt grooves 521 jointly form the fence structure.

When the fuel gas flows in the inner cavity, the pressure of the fuel gas acts on the blade 511 and drives the blade 511 to rotate, the blade 511 drives the flow dividing cylinder 52 to rotate through the rotary cylinder 51, and the flow dividing cylinder 52 drives the flow dividing groove 521 to rotate, so that the direction of the flow dividing groove 521 is continuously changed. When the gas flows out of the inner cavity through the shunt grooves 521 and flows into the annular cavity, the outflow position of the gas is continuously changed, so that the gas can be more uniformly mixed with the air in the annular cavity, the mixing degree of the gas and the air is improved, and the combustion efficiency of the gas and the air in the subsequent combustion cavity 11 is ensured.

Wherein, the blocking piece 6 comprises a movable plate 61 and a sleeve 62, the movable plate 61 is circular and is coaxially matched in the inner tube 3, and the movable plate 61 can move and rotate relative to the inner tube 3. The diameter of the movable plate 61 is slightly smaller than the diameter of the flow passage, and in the initial state, the movable plate 61 is in close proximity to the drum 51 and forms an obstruction on the flow passage. The sleeve 62 is coaxial with the movable plate 61 and is provided on the side of the movable plate 61 facing away from the drum 51, and the sleeve 62 is fixedly connected with the movable plate 61.

One end of the drum 51 adjacent to the furnace body 100 is fixed with a mounting frame 512, and the mounting frame 512 is cross-shaped and is positioned on the inner side of the drum 51. The mounting bracket 512 is fixed with a central rod 513 coaxial with the drum 51, the central rod 513 sliding through the movable plate 61 and penetrating into the sleeve 62. The inner peripheral wall of the sleeve 62 is provided with a plurality of slide grooves 621 equally spaced along the circumferential direction thereof, and the slide grooves 621 extend in the axial direction of the sleeve 62 and are closed at both ends. The central rod 513 is elastically slidably connected with a sliding block 5131, specifically, the central rod 513 is provided with a plurality of limiting grooves distributed at equal intervals along the circumferential direction of the central rod 513, the sliding block 5131 is provided with a plurality of limiting grooves and is slidably matched with the limiting grooves respectively, the sliding block 5131 and the central rod 513 are connected through a thrust spring, the sliding blocks 5131 and the sliding grooves 621 are equal in number and correspond to each other one by one, and one end of the sliding block 5131, which is away from the central rod 513, is arc-shaped and is slidably matched in the corresponding sliding groove 621. The elastic member 7 is located in the sleeve 62 and connects the sleeve 62 and the inner tube 3.

When the drum 51 rotates, the sleeve 62 is driven to rotate by the slide block 5131 and the slide groove 621, the sleeve 62 drives the elastic piece 7 to store force, when the elastic piece 7 stores force to a set value, the sleeve 62 forms larger resistance to the slide block 5131, the slide block 5131 cannot drive the sleeve 62 to rotate continuously, the slide block 5131 is separated from the slide groove 621 through the arc-shaped end part of the slide block 5131, and meanwhile, when the slide groove 621 is separated, the slide block 5131 is retracted towards the inner side of the limit groove.

The inner wall of the inner tube 3 is fixed with a plurality of guide bars 31 uniformly distributed along the circumferential direction of the inner tube, the guide bars 31 extend along the axial direction of the inner tube 3, both ends of the guide bars 31 are pointed, and a guide groove is formed between two adjacent guide bars 31. The outer peripheral surface of the movable plate 61 is provided with a plurality of guide blocks 611 uniformly distributed along the circumferential direction thereof, the number of the guide blocks 611 and the number of the guide grooves are equal and are matched with each other, both ends of the guide blocks 611 in the axial direction of the inner tube 3 are also sharp edges, and the guide blocks 611 can be restricted to slide in the guide grooves when the movable plate 61 slides in the inner tube 3.

When the gas passes through the inner tube 3, the pressure of the gas will act on the movable plate 61 first and push the movable plate 61 away from the drum 51, thereby effecting movement of the blocking member 6 away from the impeller mechanism 5. The movable plate 61, when sliding, drives the guide block 611 to slide into the guide groove, and at this time, the guide bars 31 on both sides of the guide groove restrict the circumferential movement of the guide block 611, so that the guide block 611 and the movable plate 61 can move only in the axial direction of the inner tube 3. This is designed to delay the rotation of the drum 51, and after the guide block 611 slides out of the guide groove, the movable plate 61 and the guide block 611 are released from the restriction and return to a state in which they can slide and rotate. At this time, the scraper bar 2 is also pulled out of the combustion chamber 11, and the drum 51 can drive the sleeve 62, the movable plate 61 and the scraper bar 2 to rotate synchronously under the action of the gas pressure. And the spring 7 also starts to accumulate force.

When the gas stops flowing into the inner tube 3, the blocking member 6 starts to slide toward the drum 51 by the return spring 4, and the movable plate 61 brings the guide block 611 into the guide groove again, which again restricts the rotation of the guide block 611. At this time, the elastic member 7 cannot immediately release the force due to the restriction of the guide groove, and after the guide block 611 slides out of the guide groove again, the elastic member 7 starts to release the force due to the guide block 611 losing the restriction of the guide groove, and the scraper bar 2 is just pushed into the combustion chamber 11. The elastic piece 7 drives the scraping strip 2 to rotate through the sleeve 62 and the transmission mechanism 8, so that the scraping strip 2 scrapes impurities on the inner wall of the combustion chamber 11.

The arrangement of the guide block 611, the guide groove and the guide strip 31 delays the force releasing time of the elastic piece 7, so that the force releasing starts synchronously after the scraping strip 2 enters the combustion chamber 11, the rotating stroke of the scraping strip 2 is ensured to be used for cleaning the combustion chamber 11, and the cleaning force of the combustion chamber 11 is ensured. The provision of the guide bar 31 and the pointed end of the guide block 611 facilitates the abutment of the guide block 611 with the guide groove when sliding in the axial direction of the inner tube 3, in other words, facilitates the cutting of the guide block 611 into the guide groove.

The elastic member 7 includes a collar 71 and a coil spring 72, the collar 71 is slidably sleeved on the sleeve 62, specifically, a guide groove extending along an axial direction of the sleeve 62 is provided on an outer peripheral wall of the sleeve 62, and a guide block slidably fitted in the guide groove is fixed to an inner peripheral wall of the collar 71. The coil spring 72 is coaxial with the collar 71 and is located between the collar 71 and the inner tube 3, one end of the coil spring 72 is fixedly connected with the collar 71, and the other end of the coil spring 72 is fixedly connected with the inner tube 3.

When the sleeve 62 slides, the guide groove is driven to slide relative to the guide block, at this time, the sliding of the sleeve 62 does not affect the collar 71, and at this time, the coil spring 72 has no accumulated force. When the sleeve 62 rotates, the guide block is driven to synchronously rotate through the guide groove, the guide block drives the sleeve ring 71 to rotate, the sleeve ring 71 drives the coil spring 72 to deform, and the coil spring 72 starts to store force.

The transmission mechanism 8 comprises a support shaft 81 and a bar-shaped frame 82, a coaxial inner cylinder 83 is arranged in the outer tube 1, the inner cylinder 83 is positioned on one side of the inner tube 3 facing the furnace body 100, a plurality of through grooves which are distributed at equal intervals along the circumferential direction of the inner cylinder 83 are formed in the circumferential wall of the inner cylinder 83, and the through grooves extend along the axial direction of the inner cylinder 83. The fulcrum shafts 81 are equal in number and in one-to-one correspondence with the through grooves, the fulcrum shafts 81 extend tangentially to the inner cylinder 83 and adjacent to the center of the corresponding through groove, and the fulcrum shafts 81 are fixed in the inner cylinder 83.

The end of the sleeve 62 remote from the drum 51 is provided with a mounting plate 622, the plate surface of the mounting plate 622 being perpendicular to the axis of the sleeve 62 and being polygonal. The mounting plate 622 is located in the inner cylinder 83, a plurality of sides of the mounting plate 622 are in one-to-one correspondence with a plurality of through grooves, the number of the bar frames 82 is equal to the number of the through grooves and in one-to-one correspondence, and one ends of the bar frames 82 are hinged to the sides of the mounting plate 622. The strip frame 82 is internally provided with a waist groove, the strip frame 82 is sleeved on the support shaft 81 at the corresponding through groove through the waist groove, and the strip frame 82 passes through the corresponding through groove. The scraping strips 2 are multiple and correspond to the multiple strip frames 82 one by one, a telescopic rod 84 penetrating through the groove is arranged between each strip frame 82 and the corresponding scraping strip 2, one end of the telescopic rod 84 is fixedly connected with the corresponding strip frame 82, a rotating block 87 is fixed at the other end of the telescopic rod 84, and the rotating block 87 is hinged with the scraping strips 2. Notably, the telescoping rod 84 herein may be a multi-stage telescoping rod.

The transmission mechanism 8 further comprises a rotating plate 85 and a guide rail, the rotating plate 85 is round and arranged on one side of the inner cylinder 83 facing the furnace body 100, meanwhile, the rotating plate 85 is also arranged on one side of the rotating block 87 adjacent to the furnace body 100, and the rotating plate 85 and the inner cylinder 83 are coaxial and integrally formed. The rotating plate 85 is rotatably mounted on the outer tube 1, and the rotating plate 85 divides the space inside the outer tube 1 into front and rear parts, wherein a part of the space is adjacent to the inner tube 3 and constitutes a mixing chamber, and it is understood that the annular chamber is also located in the mixing chamber. The other part of the space is adjacent to the furnace body 100 and forms the combustion chamber 11, a plurality of air holes 851 are uniformly distributed on the rotating plate 85, and the air holes 851 are communicated with the mixing chamber and the combustion chamber 11. The rotating plate 85 is provided with avoidance grooves 852 which are equal to the number of the scraping strips 2 and correspond to each other one by one, and the avoidance grooves 852 are used for allowing the corresponding scraping strips 2 to pass through. The return spring 4 is located in the inner cylinder 83, and both ends of the spring are fixedly connected with the mounting plate 622 and the rotating plate 85, respectively. The guide rails are equal in number and correspond to the scraping strips 2 one by one, are fixed on the rotating plate 85 and extend along the axial direction of the outer tube 1, and specifically, the guide rails comprise two guide strips 86 which are parallel to each other, a guide track is formed between the two guide strips 86, and the scraping strips 2 are in sliding fit in the corresponding guide tracks. The opposite side surfaces of the two guide strips 86 are respectively provided with a guide groove, the guide grooves extend along the axial direction of the outer tube 1, the scraping strip 2 is provided with two guide blocks, and the two guide blocks are respectively in sliding fit in the two guide grooves.

When the sleeve 62 drives the mounting plate 622 to slide along the axial direction of the inner tube 3, the mounting plate 622 drives the bar-shaped frame 82 to perform plane movement, and the plane movement can be decomposed into the sliding of the bar-shaped frame 82 relative to the supporting shaft 81 through the waist groove and the rotation of the bar-shaped frame 82 around the axis of the supporting shaft 81. The bar frame 82 drives the wiper strip 2 to slide in the guide rail by the transmission of the telescopic rod 84, and the two guide strips 86 are used for guiding the sliding of the wiper strip 2. The cooperation of the guide block and the guide groove is used for supporting the scraping strip 2, so that the scraping strip 2 above is prevented from falling under the action of gravity, namely, the scraping strip 2 deflects downwards to separate from the guide rail. When the wiper strip 2 slides, the movement direction of the wiper strip is opposite to the movement direction of the mounting plate 622 by the telescopic rod 84. In addition, the distance between the scraping strip 2 and the mounting plate 622 is changed continuously when the scraping strip slides, and the telescopic rod 84 is used for compensating and giving way for the change of the distance. When the scraper bar 2 slides out of the combustion chamber 11 completely, the end part of the scraper bar 2 adjacent to the combustion chamber 11 is still positioned in the avoiding groove 852, and then, when the scraper bar 2 rotates along with the sleeve 62, the rotating plate 85 can be driven to rotate together through the avoiding groove 852.

The outer tube 1 is tapered toward the end of the furnace body 100, the overall length direction of the scraping strip 2 is consistent with the axial direction of the outer tube 1, and the scraping strip 2 is bent and matched with the tapered end of the outer tube 1. It will be appreciated that the tapered end of the outer tube 1 forms a nozzle opening which communicates between the combustion chamber 11 and the interior space of the furnace body 100, and that the combustion gases and air, after being combusted in the combustion chamber 11, are ejected through the nozzle opening and form a flame in the combustion chamber 11.

In order to ensure uniform heating of the workpiece during heat treatment, example 2 is also provided.

In example 2, with continued reference to fig. 1 and 2, the gas burners 200 are divided into two groups, two groups of gas burners 200 are in one-to-one correspondence with the front and rear sidewalls of the furnace body 100, each group of gas burners 200 includes three gas burners 200 equally spaced in the left-right direction, and the gas burners 200 are connected with the corresponding sidewalls of the furnace body 100.

The two groups of gas burners 200 increase the combustion points in the furnace body 100, thereby ensuring that a plurality of parts of the workpiece are heated simultaneously and ensuring the heating uniformity of the workpiece.

The left side wall of the furnace body 100 is provided with an inlet, a sliding door 101 capable of sliding up and down is arranged at the inlet, and the sliding door 101 can be an existing electric door. When a workpiece is to enter the furnace body 100 through the inlet, the sliding door 101 is controlled to be raised and open the inlet. When the workpiece is subjected to heat treatment in the furnace body 100, the sliding door 101 is controlled to fall and close the inlet, so that external impurities are prevented from entering the furnace body 100 to influence the heat treatment of the workpiece.

Wherein, the left side of furnace body 100 is equipped with chimney 102, and chimney 102 communicates with furnace body 100. During heat treatment of the workpiece, the generated flue gas may be exhausted through the chimney 102.

The gas source comprises two gas pipes 13 and gas tanks, wherein the two gas pipes 13 are respectively arranged on the front side and the rear side of the furnace body 100, the two gas pipes 13 are in one-to-one correspondence with two groups of gas burners 200, the inner pipe 3 in the gas burner 200 is communicated with the corresponding gas pipe 13, the gas tanks are arranged on the outer side of the furnace body 100, and the gas pipes 13 are communicated with the gas tanks through first pipelines. It is understood that a valve can be arranged on the first pipeline for controlling the on-off of the first pipeline. The first pipeline can be further provided with a fuel gas pump for assisting in conveying fuel gas.

The air source comprises two air pipes 32 and air pumps 33, the two air pipes 32 are respectively arranged on the front side and the rear side of the furnace body 100, the two air pipes 32 are in one-to-one correspondence with the two groups of gas burners 200, the outer pipe 1 of the gas burner 200 is communicated with the corresponding air pipes 32, specifically, the peripheral wall of the outer pipe 1 is provided with an interface, and the interface is communicated with the corresponding air pipes 32 through a second pipeline. The air pump 33 is provided at the top end of the furnace body 100, and the air pipe 32 communicates with the air pump 33 through a pipe group. Specifically, the tube group includes a main pipe 34 and branch pipes 35 located above the furnace body 100, the main pipe 34 extending in the left-right direction, the branch pipes 35 extending in the front-rear direction, both ends of the main pipe 34 communicating with the air pump 33 and the middle of the branch pipes 35, respectively. The two ends of the branch pipe 35 are respectively communicated with the two air pipes 32 through a third pipe.

The gas tank, the gas pipe 13 and the first conduit fulfill the purpose of delivering gas into the inner pipe 3. The air pump 33, the tube group and the air tube 32 achieve the purpose of delivering air into the outer tube 1.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (6)

1. A gas burner comprising a burner body (100) and a gas burner (200), characterized in that the gas burner (200) comprises:

The outer tube (1), the outer tube (1) is inserted in the sidewall of the furnace body (100) and communicated with the furnace body (100), a coaxial inner tube (3) is arranged in the outer tube (1), an air source is externally connected with the outer tube (1), and a fuel gas source is externally connected with the inner tube (3);

the impeller mechanism (5) is rotatably arranged in the inner pipe (3), and when fuel gas is introduced into the inner pipe (3), the impeller mechanism (5) can be driven to rotate;

The blocking piece (6) is positioned on one side of the impeller mechanism (5) facing the furnace body (100) and is in sliding connection with the impeller mechanism (5) along the axial direction of the inner pipe (3), a flow passage for passing fuel gas is arranged in the impeller mechanism (5), and in an initial state, the blocking piece (6) is closely adjacent to the impeller mechanism (5) and forms a barrier on the flow passage; the blocking piece (6) is connected with the outer tube (1) through a return spring (4);

The elastic piece (7), the elastic piece (7) connects the blocking piece (6) and the inner tube (3), so that the elastic piece (7) can deform and store force when the blocking piece (6) rotates along with the impeller mechanism (5);

The scraping strip (2) is arranged on the outer tube (1) and is closely adjacent to the combustion chamber (11) of the furnace body (100), the scraping strip (2) is positioned in the combustion chamber (11) and is attached to the inner wall of the combustion chamber (11), a transmission mechanism (8) is connected between the scraping strip (2) and the blocking piece (6), when the blocking piece (6) moves away from the impeller mechanism (5), the scraping strip (2) is driven to withdraw from the combustion chamber (11) through the transmission mechanism (8), and when the blocking piece (6) moves towards the impeller mechanism (5), the scraping strip (2) is driven to extend into the combustion chamber (11) through the transmission mechanism (8);

The impeller mechanism (5) comprises a rotary drum (51) and a flow dividing drum (52), the rotary drum (51) is rotatably arranged in the inner tube (3), the inner peripheral wall of the rotary drum (51) is provided with a plurality of blades (511) which are distributed at intervals along the circumferential direction of the rotary drum, and the inner space of the rotary drum (51) forms a flow passage; an inner cavity is formed in the inner space of the inner tube (3), an annular cavity is formed between the inner tube (3) and the outer tube (1), an annular groove which is communicated with the inner cavity and the annular cavity is formed in the peripheral wall of the inner tube (3), and the annular groove is positioned on one side, adjacent to the furnace body (100), of the rotary drum (51); the diversion cylinder (52) is coaxially connected with the rotary cylinder (51) and is in rotary fit in the annular groove, the cylinder wall of the diversion cylinder (52) is of a fence structure, and the fence structure is communicated with the annular cavity and the inner cavity;

The plug (6) comprises:

the movable plate (61), the movable plate (61) takes the shape of a circle and is coaxially matched in the inner tube (3), and in an initial state, the movable plate (61) is adjacent to the rotary drum (51) and forms a block on the runner;

The sleeve (62), sleeve (62) and fly leaf (61) are coaxial and locate one side that fly leaf (61) deviates from rotary drum (51), rotary drum (51) are equipped with and slip through fly leaf (61) and wear to locate central pole (513) in sleeve (62), the inner perisporium of sleeve (62) is equipped with along the spout (621) of the axial extension of sleeve (62), central pole (513) elastic sliding connection has slider (5131), the one end that the slider (5131) deviates from central pole (513) is circular-arc and sliding fit in spout (621), elastic component (7) connect sleeve (62) and inner tube (3), when rotary drum (51) rotate, drive sleeve (62) through slider (5131) and spout (621) and rotate, sleeve (62) drive elastic component (7) and hold the power, when elastic component (7) hold the power to the setting value, slider (5131) is deviate from spout (621) through its circular-arc tip;

The transmission mechanism (8) comprises:

The support shaft (81) is arranged in the outer tube (1), the inner tube (83) is arranged on one side of the inner tube (3) facing the furnace body (100), the peripheral wall of the inner tube (83) is provided with a through groove, the support shaft (81) extends along the tangential direction of the inner tube (83) and is fixed in the inner tube (83), and the support shaft (81) is adjacent to the center of the through groove;

The end part of the sleeve (62) far away from the rotary drum (51) is provided with a mounting plate (622), the mounting plate (622) is positioned in the inner cylinder (83), one end of the bar-shaped frame (82) is hinged on the mounting plate (622), a waist groove is formed in the bar-shaped frame (82), and the bar-shaped frame (82) is sleeved on the support shaft (81) through the waist groove; a telescopic rod (84) penetrating through the groove is arranged between the bar frame (82) and the scraping strip (2), one end of the telescopic rod (84) is fixedly connected with the bar frame (82), and the other end of the telescopic rod (84) is hinged with the scraping strip (2);

the transmission mechanism (8) further comprises:

The rotary plate (85), the rotary plate (85) is circular and is arranged on one side of the inner cylinder (83) facing the furnace body (100), the rotary plate (85) is rotatably arranged on the outer tube (1), the space in the tube of the outer tube (1) is divided into two parts by the rotary plate (85), one part of the space is adjacent to the inner tube (3) and forms a mixing cavity, the annular cavity is positioned in the mixing cavity, the other part of the space is adjacent to the furnace body (100) and forms a combustion cavity (11), air holes (851) which are communicated with the mixing cavity and the combustion cavity (11) are uniformly distributed on the rotary plate (85), and the rotary plate (85) is provided with an avoidance groove (852) for the scraping strip (2) to pass through; the reset spring (4) is positioned in the inner cylinder (83), and two ends of the spring are fixedly connected with the mounting plate (622) and the rotating plate (85) respectively;

The guide rail is fixed on the rotating plate (85) and extends along the axial direction of the outer tube (1), and the scraping strip (2) is in sliding fit with the guide rail.

2. A gas burner according to claim 1, wherein the inner wall of the inner tube (3) is provided with a plurality of guide bars (31) uniformly distributed along the circumferential direction thereof, the guide bars (31) extend along the axial direction of the inner tube (3), both ends of the guide bars (31) are sharp edges, and a guide groove is formed between two adjacent guide bars (31); the periphery of the movable plate (61) is provided with a plurality of guide blocks (611) which are uniformly distributed along the circumferential direction, the number of the guide blocks (611) is equal to that of the guide grooves and the guide blocks are matched with each other, both ends of the guide blocks (611) in the axial direction of the inner tube (3) are sharp, and when the movable plate (61) slides in the inner tube (3), the guide blocks (611) can be limited to slide in the guide grooves.

3. A gas burner according to claim 1, wherein said elastic element (7) comprises:

the sleeve ring (71), the sleeve ring (71) is slidably sleeved on the sleeve (62);

The coil spring (72), coil spring (72) and lantern ring (71) coaxial and lie in between lantern ring (71) and inner tube (3), one end and lantern ring (71) fixed connection of coil spring (72), the other end and inner tube (3) fixed connection of coil spring (72).

4. A gas burner according to claim 1, wherein the end of the outer tube (1) facing the burner body (100) is tapered, the length direction of the scraping strip (2) is consistent with the axial direction of the outer tube (1), and the scraping strip (2) is bent and matched with the tapered end of the outer tube (1).

5. A gas burner according to claim 1, wherein the gas burners (200) are divided into two groups, the two groups of gas burners (200) are in one-to-one correspondence with the front and rear side walls of the furnace body (100), each group of gas burners (200) comprises a plurality of gas burners (200) distributed at intervals in the left-right direction, and the gas burners (200) are connected with the corresponding side walls of the furnace body (100).

6. The gas furnace according to claim 5, wherein the gas source comprises two gas pipes (13) and gas tanks, the two gas pipes (13) are respectively arranged on the front side and the rear side of the furnace body (100), the two gas pipes (13) are in one-to-one correspondence with two groups of gas burners (200), the inner pipe (3) in the gas burner (200) is communicated with the corresponding gas pipe (13), the gas tanks are arranged on the outer side of the furnace body (100), and the gas pipes (13) are communicated with the gas tanks through first pipelines;

The air source comprises two air pipes (32) and an air pump (33), the two air pipes (32) are respectively arranged on the front side and the rear side of the furnace body (100), the two air pipes (32) are in one-to-one correspondence with two groups of gas burners (200), and the outer pipe (1) of the gas burner (200) is communicated with the corresponding air pipe (32); the air pump (33) is arranged at the top end of the furnace body (100), and the air pipe (32) is communicated with the air pump (33) through a pipe group.