Spray gun, burner and control method

文档序号：1753153 发布日期：2019-11-29 浏览：24次中文

阅读说明：本技术 喷枪、燃烧器和控制方法 (Spray gun, burner and control method ) 是由王良初刘亮雷林韬于 2019-08-21 设计创作，主要内容包括：本发明提出了一种喷枪、燃烧器和控制方法,其中,喷枪包括：混合腔,用于混合燃油和气体,混合腔的一端设有喷嘴,喷嘴用于喷射燃油；燃油室,与混合腔连通；气室,一端与混合腔连通；缸筒腔,与气室的另一端连通；相互连接的活塞和顶针,活塞设于缸筒腔内,并可带动顶针移动,以连通或隔绝燃油室和混合腔；其中,进入气室的一部分气体从气室的一端进入混合腔内,另一部分气体从气室的另一端进入缸筒腔内,推动活塞带动顶针,打开燃油室与混合腔之间的通道。通过本发明的技术方案,避免了燃油因低温易凝结的现象,提升了点火的成功率,且结构简单,易于维护和保养。(The invention proposes a kind of spray gun, burner and control methods, wherein spray gun includes: mixing chamber, is used for blended fuel oil and gas, and one end of mixing chamber is equipped with nozzle, and nozzle is for spraying fuel oil；Fuel oil room, is connected to mixing chamber；Gas chamber, one end are connected to mixing chamber；Cylinder barrel chamber is connected to the other end of gas chamber；Piston and thimble interconnected, it is intracavitary that piston is set to cylinder barrel, and thimble can be driven mobile, to be connected to or completely cut off fuel oil room and mixing chamber；Wherein, enter in mixing chamber into a part of gas of gas chamber from one end of gas chamber, it is intracavitary that another part gas from the other end of gas chamber enters cylinder barrel, pushes piston driving thimble, opens the channel between fuel oil room and mixing chamber.According to the technical solution of the present invention, the phenomenon that fuel oil is easily condensed because of low temperature is avoided, improves the success rate of igniting, and structure is simple, easy to maintain and maintenance.)

1. a kind of spray gun characterized by comprising

Gun body (100) is provided with fuel oil room (102), gas chamber (104), mixing chamber (132), cylinder barrel chamber in the gun body (100) (106)；

It is provided on the gun body (100) and is connected to the oil inlet (109) of the fuel oil room (102), is connected to the gas chamber (104) air inlet (105)；

The nozzle (134) for being connected to one end of the mixing chamber (132) is additionally provided on the gun body (100)；

It is connected between the other end of the mixing chamber (132) and one end of the fuel oil room (102) by oil outlet (114)；

It is connected between the other end of the mixing chamber (132) and one end of the gas chamber (104) by venthole (113)；

Between the other end of the fuel oil room (102) and one end of the cylinder barrel chamber (106) even by thimble pilot hole (123) It is logical；

It is connected between the other end of the gas chamber (104) and one end of the cylinder barrel chamber (106) by venthole (112)；

It is provided with reciprocating piston (120) in the cylinder barrel chamber (106), is fixedly installed top on the piston (120) Needle (122) is arranged in the thimble pilot hole (123) to thimble (122) slidable sealing,

Wherein, when the piston (120) are located at one end of the cylinder barrel chamber (106), the tail end plugs institute of the thimble (122) Oil outlet (114) are stated, when the piston (120) are located at the other end of the cylinder barrel chamber (106), the end of the thimble (122) End is left the oil outlet (114), and is provided between the gun body (100) and the piston (120) or thimble (122) and makes institute State the dynamic clamping head and quiet clamping head that piston (120) is moved to one end of the cylinder barrel chamber (106).

2. spray gun according to claim 1, which is characterized in that

One end of the gun body (100) is equipped with recess；

The spray gun further include:

Gland (108) is covered in the recess and connect with the gun body (100)；

Guide sleeve (110), is set to the side in the recess far from the gland (108), and with the gun body (100), described Gland (108) jointly constructs go out the cylinder barrel chamber (106), and the gas chamber (104) and the fuel oil room (102) are set to the guiding The side of (110) far from the cylinder barrel chamber (106) is covered, and the guide sleeve (110) is equipped with the venthole (112).

3. spray gun according to claim 2, which is characterized in that

Peripherally and outwardly protrusion of the end of the thimble (122) along the thimble (122)；

The dynamic clamping head and quiet clamping head is spring (124), is sheathed on the thimble (122), one end of the spring (124) is resisted against On the guide sleeve (110), the other end of the spring (124) is resisted against on the end of the thimble (122).

4. spray gun according to claim 3, which is characterized in that

One end of the fuel oil room (102) is equipped with sealing (103), and the cross-sectional area of the sealing (103) is along the fuel oil It is gradually reduced on room (102) to the direction of the mixing chamber (132)；

The shape of the end of the thimble (122) is adapted with the shape of the sealing (103).

5. spray gun according to claim 4, which is characterized in that

The gun body (100) includes mutually detachably connected pipette tips (130) and the body of a gun (101), is set in the body of a gun (101) There is the fuel oil room (102), the mixing chamber (132) is set in the pipette tips (130).

6. a kind of burner characterized by comprising

Spray gun (10) of any of claims 1-5；

Oil inlet pipe, the output end of the oil inlet pipe are connected to the oil inlet (109) of the spray gun (10), the oil inlet pipe It is interior to be equipped with circulating oil path,

Wherein, the circulating oil path is equipped with heating device (32), and the heating device (32) is for heating the circulating oil path Interior fuel oil.

7. burner according to claim 6, which is characterized in that the circulating oil path includes:

Filter (28), is connected to the input terminal of the oil inlet pipe；

Oil pump (30) is connected to one end of the filter (28)；

Circulating valve (34), has first interface, second interface and a third interface, the first interface be connected to the oil pump (30) with From the filter (28) oil inlet, the second interface of the circulating valve (34) is connected to the filter (28) with to the filter (28) oil return, the third interface of the circulating valve (34) are connected to the spray gun with the oil inlet (109) of the spray gun (10) (10) fuel feeding.

8. burner according to claim 7, which is characterized in that further include:

Air inlet pipeline, including the first branch and second branch；

The first branch is equipped with spray gun blow down valve (36), the oil inlet of the spray gun blow down valve (36) and the spray gun (10) (109) it is connected to；

The second branch is equipped with atomization valve (38), and the air inlet (105) of the atomization valve (38) and the spray gun (10) is even It is logical；

Lighting valve (40) interconnected and burning torch (26), the burning torch (26) are used for after the lighting valve (40) are opened Light the spray gun (10).

9. a kind of control method, for burner described in any one of claim 6-8 characterized by comprising

Step S100: firing command is obtained；

Step S102: according to the firing command, start oil pump, recycle fuel oil through circulating valve in the circulating oil path；

Step S104: starting the heating device on the circulating oil path, heats the fuel oil；

Step S106: after heating first preset duration of fuel oil, lighting valve is opened to light burning torch；

Step S108: after opening second preset duration of lighting valve, judging whether the burning torch has flare up fire, if Nothing executes step S122；

Step S110: if so, connecting the first interface and third interface of the circulating valve, flowing into the fuel oil in spray gun, into Row builds the pressure；

Step S112: after the third preset duration that builds the pressure, judging whether the burning torch has flare up fire, if nothing, executes step S122；

Step S114: if so, opening atomization valve, allowing compressed air into spray gun and push piston and thimble, sprays the fuel oil Out；

Step S116: after the fuel oil sprays the 4th preset duration, judge whether the spray gun has flare up fire, if nothing, holds Row step S122；

Step S118: if so, after determining that the spray gun has the 5th preset duration of flare up fire, judge the flame letter of the spray gun Number whether meet preset condition, if it is not, executing step S122；

Step S120: if so, closing the lighting valve and the burning torch；

Step S122: flame-out to burner.

10. control method according to claim 9, which is characterized in that

The step S122 is specifically included:

Obtain flame-out instruction；

According to the flame-out instruction, the oil pump is closed, and the circulating valve is switched into the first interface and second interface；

The oil pump is being closed, and after the circulating valve is switched to the first interface and second interface, it is default by the 6th Duration opens spray gun blow down valve and purges the spray gun；

After purging the 7th preset duration, the spray gun blow down valve and atomization valve are closed.

Technical field

The present invention relates to technical field of burner, in particular to a kind of spray gun, a kind of burner and a kind of controlling party Method.

Background technique

Asphalt station oil burner generallys use heavy oil as fuel at present, and heavy oil needs to heat after reducing viscosity, uses Compressed air is as atomizing medium, in the atomization after-combustion of spray gun.

It is easy cooling condensation blocking when one side fuel oil is flowed from pipeline, causes to misfire；On the other hand it compresses empty Gas and fuel oil are successively sprayed from spray gun, and compressed air plays the effect of cooling spray gun, and fuel oil is also easy solidifying by this cooling effect Knot is blocked in spray gun, causes to misfire.Cold day is particularly evident using this phenomenon of high viscosity heavy oil, not such as burner point Kindling, will lead to a large amount of matching equipments of asphalt station and personnel wait, and reduce working efficiency, to solve above-mentioned fuel oil condensation And electric heater unit is arranged in the problem of can not lighting a fire, some technical solutions in spray gun, heat gun before lighting a fire, in order to point Fire, but be architectural limitation, electrical heating power is limited in spray gun, and the feelings misfired are still had when using high viscosity fuel Condition, and spray gun structure is complicated, electric heater unit damage will lead to entire spray gun and scrap.

Summary of the invention

The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.

In view of this, it is an object of the present invention to provide a kind of spray guns.

It is another object of the present invention to provide a kind of burners.

Yet another object of the invention is that providing a kind of control method.

To achieve the goals above, the technical solution of first aspect present invention provides a kind of spray gun, comprising: gun body, rifle Fuel oil room, gas chamber, mixing chamber, cylinder barrel chamber are provided in body；It is provided in gun body and is connected to the oil inlet of fuel oil room, is connected to gas The air inlet of room；The nozzle for being connected to one end of mixing chamber is additionally provided in gun body；The other end of mixing chamber and one end of fuel oil room Between pass through oil outlet be connected to；It is connected between the other end of mixing chamber and one end of gas chamber by venthole；Fuel oil room it is another End is connected to between one end of cylinder barrel chamber by thimble pilot hole；Pass through ventilation between the other end of gas chamber and one end of cylinder barrel chamber Hole connection；It is provided with reciprocating piston in cylinder barrel chamber, thimble is fixedly installed on piston, is worn to thimble slidable sealing In thimble pilot hole, wherein when piston is located at one end of cylinder barrel chamber, the tail end plugs oil outlet of thimble, when piston position When the other end of cylinder barrel chamber, oil outlet is left in the end of thimble, and being provided between gun body and piston or thimble moves piston It moves to the dynamic clamping head and quiet clamping head of one end of cylinder barrel chamber.

In the technical scheme, by the way that gas chamber to be set as being connected to cylinder barrel chamber and mixing chamber respectively, enter gas in gas Behind room, can enter in cylinder barrel chamber and mixing chamber simultaneously, and push piston driving thimble, open oil outlet, connection fuel oil room and Mixing chamber allows the indoor fuel oil of fuel oil to enter mixing chamber simultaneously with gas and mixes, avoid compressed air be introduced into it is mixed The phenomenon that cooling spray gun of chamber leads to fuel oil condensation blocking is closed, the case where misfiring so as to avoid burner, improves work Efficiency.

Specifically, by the setting of mixing chamber, the mixing for fuel oil and gas provides space；By the setting of nozzle, Convenient for spraying the mixture of fuel oil and gas；The setting of fuel oil room, convenient for being suppressed in fuel oil room before fuel oil enters mixing chamber Pressure after fuel oil room is connected to mixing chamber, under pressure, rapidly enters mixing chamber and gas is mixed to open in oil outlet It closes, and is sprayed outward from nozzle, avoid blocking；One end of gas chamber is connected to mixing chamber, enters mixing chamber and fuel oil convenient for gas Mixing；The other end of gas chamber is connected to cylinder barrel chamber, and the thimble slidable sealing of piston be arranged in thimble pilot hole, piston Intracavitary set on cylinder barrel, in this way after gas enters gas chamber, a part of gas is able to enter mixing chamber, and another part gas enters cylinder Barrel chamber pushes piston, drives thimble mobile, to open oil outlet, so that fuel oil room is connected to mixing chamber, that is, passes through work The linkage of plug and thimble is opened so that another part gas push piston is mobile while a part of gas enters mixing chamber Oil outlet between fuel oil room and mixing chamber, the fuel oil to build the pressure in fuel oil room can with gas while entering in mixing chamber, from And avoiding gas and being introduced into mixing chamber causes spray gun to cool, and then the phenomenon that lead to fuel oil condensation blocking, make fuel oil and The mixture of gas can be sprayed from nozzle together, avoided the case where burner misfires, improved working efficiency.

In the above-mentioned technical solutions, one end of gun body is equipped with recess；Spray gun further include: gland, be covered on recess it is upper and with Gun body connection；Guide sleeve far from the side of gland in recess, and goes out cylinder barrel chamber with gun body, gland jointly constructs, gas chamber and Fuel oil room is set to side of the guide sleeve far from cylinder barrel chamber, and guide sleeve is equipped with venthole.

In the above-mentioned technical solutions, peripherally and outwardly protrusion of the end of thimble along thimble；Dynamic clamping head and quiet clamping head is spring, is arranged In on thimble, one end of spring is resisted against on guide sleeve, and the other end of spring is resisted against on the end of thimble.

In the above-mentioned technical solutions, one end of fuel oil room is equipped with sealing, and the cross-sectional area of sealing is along fuel oil room to mixing It closes and is gradually reduced on the direction of chamber；The shape of the end of thimble is adapted with the shape of sealing.

In the above-mentioned technical solutions, gun body includes mutually detachably connected pipette tips and the body of a gun, is equipped with fuel oil in the body of a gun Room, mixing chamber are set in pipette tips.

The technical solution of second aspect of the present invention provides a kind of any one of burner, including above-mentioned first aspect technology The spray gun of scheme；Oil inlet pipe, the output end of oil inlet pipe are connected to the oil inlet of spray gun, and recycle oil is equipped in oil inlet pipe Road, wherein circulating oil path is equipped with heating device, and heating device is for the fuel oil in heat cycles oil circuit.

In the technical scheme, by using the spray gun of any of the above-described technical solution, to be provided with above-mentioned technical side Whole beneficial effects of case, details are not described herein.

Further, by the setting of oil inlet pipe, and the output end of oil inlet pipe is connected to the oil inlet of spray gun, is convenient for It builds the pressure to fuel oil room input fuel oil；It is equipped with circulating oil path on oil inlet pipe, and is provided with heating dress on circulating oil path It sets, convenient for being heated to the fuel oil in circulating oil path, and since oil circuit is circulation, persistently fuel oil can be added Heat, it is ensured that fuel oil temperature is re-fed into fuel oil room after reaching certain value, to avoid fuel oil temperature too low and condense；In addition, It is set on the circulating oil path outside spray gun due to heating device, can simplify the structure of spray gun, maintenance is more convenient, In It is conveniently replaceable after heating device damage, avoids the case where causing spray gun to be scrapped because of heating device damage.

In the above-mentioned technical solutions, circulating oil path includes: filter, is connected to the input terminal of oil inlet pipe；Oil pump, with mistake One end of filter is connected to；Circulating valve, has first interface, second interface and third interface, and first interface is connected to oil pump with from mistake Filter oil inlet, the second interface connection filter of circulating valve with to filter oil return, the third interface of circulating valve and spray gun into Hydraulic fluid port connection is with to spray gun fuel feeding.

In the above-mentioned technical solutions, burner further include: air inlet pipeline, including the first branch and second branch；First Road is equipped with spray gun blow down valve, and spray gun blow down valve is connected to the oil inlet of spray gun；Second branch be equipped with atomization valve, atomization valve with The air inlet of spray gun is connected to；Lighting valve and burning torch interconnected, burning torch are used to light spray gun after lighting valve opening.

The technical solution of third aspect present invention provides a kind of control method, for any one of above-mentioned second aspect skill The burner of art scheme；Include:

Step S100: firing command is obtained；

Step S102: according to firing command, start oil pump, recycle fuel oil through circulating valve in circulating oil path；

Step S104: the heating device on starting circulating oil path, heated fuel oil；

Step S106: after the first preset duration of heated fuel oil, lighting valve is opened to light burning torch；

Step S108: after opening the second preset duration of lighting valve, judge whether burning torch has flare up fire, if nothing, holds Row step S122；

Step S110: it if so, connecting the first interface and third interface of circulating valve, flows into fuel oil in spray gun, is suppressed Pressure；

Step S112: after the third preset duration that builds the pressure, judging whether burning torch has flare up fire, if nothing, executes step S122；

Step S114: it if so, opening atomization valve, allows compressed air into spray gun and pushes piston and thimble, spray fuel oil Out；

Step S116: after fuel oil sprays the 4th preset duration, judge whether spray gun has flare up fire, if nothing, executes step Rapid S122；

Step S118: if so, after determining that spray gun has the 5th preset duration of flare up fire, judge that the flare up fire of spray gun is It is no to meet preset condition, if it is not, executing step S122；

Step S120: if so, closing lighting valve and burning torch；

Step S122: flame-out to burner.

In the technical scheme, by recycling fuel oil through circulating valve in circulating oil path, and start heating devices heat combustion Oil can be preheated before fuel oil enters spray gun in this way, avoid fuel oil temperature too low and condense cause to block, improve a little The success rate of fire；There is flare up fire in burning torch and then connect the first interface and third interface of circulating valve, enters fuel oil It builds the pressure in spray gun, and the third preset duration that builds the pressure, is conducive to promote the indoor fuel pressure of fuel oil in this way, promote fuel oil injection speed Degree；After the third preset duration that builds the pressure, whether detection burning torch has flare up fire, after having flare up fire, is then turned on atomization valve, makes Compressed air enters spray gun and pushes piston and thimble, so that fuel oil can enter mixing chamber simultaneously with compressed air, and passes through spray Mouth sprays outward, and since burning torch has a flare up fire, the fuel oil that nozzle sprays, which is possible to be ignited rifle, to be lighted, at this point, can Whether it is ignited with the fuel oil for whether having flare up fire by detecting spray gun to determine that spray gun sprays；Further, due to various Factor influences, even if the fuel oil that spray gun sprays is ignited, it is also possible to which midway is extinguished, therefore in the flare up fire for obtaining spray gun After 5th preset duration, judge whether the flare up fire of spray gun meets preset condition, to determine whether spray gun igniting succeeds, in point Lighting valve and burning torch are turned off after igneous function, are conducive to promote working efficiency in this way.

It is to be appreciated that the technical solution of the application in multiple links, confirms whether burning torch has flare up fire repeatedly, Be convenient for process control in this way, any one link discovery burning torch extinguish, igniting may fail first time in just into Row confirmation, and take measures, so as to find failure in time and be discharged, increasing ignition success rate and working efficiency.

Optionally, preset condition includes the size of flare up fire, duration etc..

In the above-mentioned technical solutions, step S122 is specifically included:

Obtain flame-out instruction；

According to flame-out instruction, oil pump is closed, and circulating valve is switched into first interface and second interface；

Oil pump is being closed, and after circulating valve is switched to first interface and second interface, by the 6th preset duration, opened Spray gun blow down valve purges spray gun；

After purging the 7th preset duration, spray gun blow down valve and atomization valve are closed.

Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.

Detailed description of the invention

Fig. 1 is the schematic cross-sectional view of the spray gun of one embodiment of the present of invention；

Fig. 2 be in Fig. 1 A-A to schematic cross-sectional view；

Fig. 3 is the partial enlargement structural representation in the portion B in Fig. 1；

Fig. 4 is the schematic perspective view of the guide sleeve of one embodiment of the present of invention；

Fig. 5 is the schematic view of the front view of the guide sleeve of one embodiment of the present of invention；

Fig. 6 is the side structure schematic view of the guide sleeve of one embodiment of the present of invention；

Fig. 7 is the structural schematic diagram of the burner of one embodiment of the present of invention；

Fig. 8 is the flow diagram of the control method of one embodiment of the present of invention；

Fig. 9 is the flow diagram of the control method of another embodiment of the invention.

Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 7 are as follows:

10 spray guns, 100 gun bodies, 101 body of a guies, 102 fuel oil rooms, 103 sealings, 104 gas chambers, 105 air inlets, 106 cylinder barrels Chamber, 108 glands, 109 oil inlets, 110 guide sleeves, 112 ventholes, 113 ventholes, 114 oil outlets, 120 pistons, 122 thimbles, 123 thimble pilot holes, 124 springs, 130 pipette tips, 132 mixing chambers, 134 nozzles, 20 combustion chambers, 22 stable flame pans, 24 blowers, 26 points Firelock, 28 filters, 30 oil pumps, 32 heating devices, 34 circulating valves, 36 spray gun blow down valves, 38 atomization valves, 40 lighting valves.

Specific embodiment

It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.

According to some embodiments of the present invention referring to Fig. 1 to Fig. 9 description.

As shown in Figures 1 to 5, the spray gun 10 of the one embodiment proposed according to the present invention, comprising: gun body 100, gun body Fuel oil room 102, gas chamber 104, mixing chamber 132, cylinder barrel chamber 106 are provided in 100；It is provided in gun body 100 and is connected to fuel oil room 102 oil inlet 109, the air inlet 105 for being connected to gas chamber 104；The one end for being connected to mixing chamber 132 is additionally provided in gun body 100 Nozzle 134；It is connected between the other end of mixing chamber 132 and one end of fuel oil room 102 by oil outlet 114；Mixing chamber 132 It is connected between the other end and one end of gas chamber 104 by venthole 113；The other end of fuel oil room 102 and one end of cylinder barrel chamber 106 Between by thimble pilot hole 123 be connected to；Connected between the other end of gas chamber 104 and one end of cylinder barrel chamber 106 by venthole 112 It is logical；It is provided with reciprocating piston 120 in cylinder barrel chamber 106, thimble 122 is fixedly installed on piston 120, thimble 122 can It is slidably and sealingly arranged in thimble pilot hole 123, wherein when piston 120 is located at one end of cylinder barrel chamber 106, thimble 122 Tail end plugs oil outlet 114, when piston 120 is located at the other end of cylinder barrel chamber 106, oil outlet is left in the end of thimble 122 114, and the elasticity of the one end for making piston 120 be moved to cylinder barrel chamber 106 is provided between gun body 100 and piston 120 or thimble 122 Return unit.

In this embodiment, by the way that gas chamber 104 to be set as being connected to cylinder barrel chamber 106 and mixing chamber 132 respectively, in gas Into after gas chamber 104, it can enter in cylinder barrel chamber 106 and mixing chamber 132 simultaneously, and piston 120 is pushed to drive thimble 122, beat Oilhole 114 is outputed, fuel oil room 102 and mixing chamber 132 is connected to, the fuel oil in fuel oil room 102 is entered simultaneously with gas Mixing chamber 132 mixes, and avoids compressed air and is introduced into the phenomenon that cooling spray gun 10 of mixing chamber 132 leads to fuel oil condensation blocking, The case where misfiring so as to avoid burner improves working efficiency.

Specifically, by the setting of mixing chamber 132, the mixing for fuel oil and gas provides space；Pass through nozzle 134 Setting, convenient for spraying the mixture of fuel oil and gas；The setting of fuel oil room 102, convenient for before fuel oil enters mixing chamber 132, It builds the pressure in fuel oil room 102, under pressure, to rapidly enter mixing after fuel oil room 102 is connected to mixing chamber 132 Chamber 132 and gas mixing, and sprayed outward from nozzle 134, it avoids blocking；One end of gas chamber 104 is connected to mixing chamber 132, just Enter mixing chamber 132 in gas to mix with fuel oil；The other end of gas chamber 104 is connected to cylinder barrel chamber 106, and the thimble of piston 120 It is arranged in thimble pilot hole 123 to 122 slidable sealings, piston 120 is set in cylinder barrel chamber 106, enters gas in gas in this way Behind room 104, a part of gas is able to enter mixing chamber 132, and another part gas enters cylinder barrel chamber 106 and pushes piston 120, drives Thimble 122 is mobile, to open oil outlet 114, so that fuel oil room 102 is connected to mixing chamber 132, that is, passes through piston 120 With the linkage of thimble 122, so that while a part of gas enters mixing chamber 132, another part gas push piston is mobile, Open the channel between fuel oil room 102 and mixing chamber 132, the fuel oil to build the pressure in fuel oil room 102 can with gas while entering In mixing chamber 132, being introduced into mixing chamber 132 so as to avoid gas causes spray gun 10 to cool, and then fuel oil is caused to condense The phenomenon that blocking, enables the mixture of fuel oil and gas to spray together from nozzle 134, avoids the feelings that burner misfires Condition improves working efficiency.

As shown in Figure 2 and Figure 3, in the above-described embodiments, one end of gun body 100 is equipped with recess；Spray gun further include: gland 108, it is covered on recess and above and with gun body 100 connect；As shown in figure 3, piston component includes: guide sleeve 110, it is set to remote in recess The side of tripping lid, and go out cylinder barrel chamber 106 with gun body 100,108 jointly constructs of gland, gas chamber 104 and fuel oil room 102, which are set to, leads To 110 sides far from cylinder barrel chamber 106 of set, and guide sleeve 110 is equipped with the venthole 112 being connected to gas chamber 104, guide sleeve 110 specific structure, as shown in Figures 4 to 6.

In this embodiment, by being equipped with recess in one end of gun body 100, convenient for forming the space for accommodating piston 120；It is logical The setting of overpressure cap 108 promotes the convenience of installation and maintenance piston 120 convenient for assembly and disassembly piston 120；Pass through guide sleeve 110 Setting is convenient in gas from guide sleeve 110 in this way convenient for going out closed cylinder barrel chamber 106 with gun body 100,108 jointly constructs of gland On venthole 112 when entering cylinder barrel chamber 106, piston 120 can be pushed mobile, so that thimble 122 be driven to link；In addition, leading Setting to set 110, additionally it is possible to avoid the channel between closing fuel oil room 102 and cylinder barrel chamber 106, the fuel oil in fuel oil room 102 Lead to failure in into cylinder barrel chamber 106.

It is to be appreciated that being equipped with sealing ring between 100 inner wall of guide sleeve 110 and gun body, it can further seal lead in this way Gap between set 110 and 100 inner wall of gun body, so that fuel oil more effectively be avoided to enter in cylinder barrel chamber 106.

As shown in figure 3, in the above-described embodiments, the peripherally and outwardly protrusion of the end of thimble 122 along thimble 122；Elasticity is multiple Position part is spring 124, is sheathed on thimble 122, one end of spring 124 is resisted against on guide sleeve 110, the other end of spring 124 It is resisted against on the end of thimble 122；Wherein, piston 120 is entered the gas push in cylinder barrel chamber 106, separate guide sleeve 110, And driving thimble 122 far from mixing chamber 132 to be connected to fuel oil room 102 and mixing chamber 132, spring 124 is compressed；Stop in gas Into after cylinder barrel chamber 106, thimble 122 resets under the elastic force effect of spring 124, and completely cuts off fuel oil room 102 and mixing chamber 132.

In this embodiment, by being arranged with spring 124 on thimble 122, it is convenient for the reset of piston 120 in this way, makes to live Plug can be connected to fuel chamber and mixing chamber 132 under gas push, can reset under the effect of 124 elastic force of spring and completely cut off fuel oil Room 102 and mixing chamber 132；Specifically, it is connect by thimble 122 with piston 120, facilitates access for the gas push of cylinder barrel chamber 106 Piston 120 drives thimble 122 to move, and is further driven to 122 end of thimble, makes the end of thimble 122 far from mixing chamber 132, from And it is connected to fuel oil room 102 and mixing chamber 132；Thimble 122 runs through guide sleeve 110 by thimble pilot hole 123, convenient for passing through guiding Set 110 limitation the freedom degrees in the radial direction of thimble 122, it is ensured that thimble 122 axially movable, thus reset when, can be accurate Ground completely cuts off fuel oil room 102 and mixing chamber 132 again, promotes stability and reliability that piston 120 and thimble 122 work；Thimble 122 end along thimble 122 peripherally and outwardly protrusion, convenient for the spring 124 that is set on thimble 122 against so as in piston When whole mobile to the direction far from mixing chamber 132, pass through the partial shrinkage spring 124 of protrusion；Above structure is simple, and work is steady It is fixed reliable, it can be ensured that when gas enters gas chamber 104, fuel oil and gas enter mixing chamber 132 simultaneously；Stop entering gas in gas When room 104, piston 120 loses the motive force of gas, resets under the elastic force effect of spring 124, gas and fuel oil stop simultaneously Only enter mixing chamber 132.

It is to be appreciated that being equipped with sealing ring between thimble 122 and guide sleeve 110, cylinder barrel chamber 106 is flowed into avoid fuel oil It is interior.

As shown in Figure 1, in the above-described embodiments, one end of fuel oil room 102 is equipped with sealing 103, sealing 103 it is transversal Area is gradually reduced along fuel oil room 102 to the direction of mixing chamber 132；The shape of the end of thimble 122 and the shape of sealing 103 Shape is adapted.

In this embodiment, by the setting of sealing 103, and the cross-sectional area of sealing 103 is arrived along fuel oil room 102 and is mixed It closes and is gradually reduced on the direction of chamber 132, and the shape of the end of thimble 122 is adapted with the shape of sealing 103, such section The sealing 103 gradually changed is convenient for being oriented to when the other end of thimble 122 is mobile to mixing chamber 132, it is ensured that thimble 122 End can completely cut off mixing chamber 132 and fuel oil room 102 by sealing 103, avoid fuel leakage to mixing chamber 132 from causing cold But it condenses and results in blockage, and this section being gradually reduced also helps the reliability of lift-off seal.

Preferably, sealing 103 is in cone.

As shown in Figure 1, in the above-described embodiments, gun body 100 includes mutually detachably connected pipette tips 130 and the body of a gun 101, the body of a gun 101 is interior to be equipped with fuel oil room 102, and mixing chamber 132 is set in pipette tips 130.

In this embodiment, by setting the body of a gun 101 and pipette tips 130 for gun body 100, and mixing chamber 132 is set to pipette tips In 130, when carrying out maintenance, pipette tips 130 can be removed, shorten the length of gun body 100 in this way, convenient for mixing chamber 132, fuel oil room 102 is cleared up, to further reduce the possibility blocked when spray gun 10 sprays.

Appoint as shown in fig. 7, the embodiment of second aspect of the present invention provides in a kind of burner, including above-mentioned first aspect The spray gun 10 of one embodiment；Oil inlet pipe, the output end of oil inlet pipe are connected to the oil inlet 109 of spray gun 10, oil inlet pipe It is interior to be equipped with circulating oil path, wherein circulating oil path is equipped with heating device 32, and heating device 32 is for the combustion in heat cycles oil circuit Oil.

In this embodiment, by using the spray gun 10 of any of the above-described embodiment, to be provided with above-described embodiment Whole beneficial effects, details are not described herein.

Further, by the setting of oil inlet pipe, and the oil inlet 109 of the output end of oil inlet pipe and spray gun 10 connects It is logical, it builds the pressure convenient for inputting fuel oil to fuel oil room 102；It is equipped with circulating oil path on oil inlet pipe, and is set on circulating oil path Heating device 32 has been set, convenient for being heated to the fuel oil in circulating oil path, and since oil circuit is circulation, can have been continued Fuel oil is heated, it is ensured that fuel oil temperature is re-fed into fuel oil room 102 after reaching certain value, to avoid fuel oil temperature mistake It is low and condense；In addition, being set on the circulating oil path outside spray gun 10 due to heating device 32, the knot of spray gun 10 can simplify Structure, maintenance is more convenient, is conveniently replaceable after the damage of heating device 32, avoids because the damage of heating device 32 leads to spray gun 10 the case where scrapping.

In the above-described embodiments, circulating oil path includes: filter 28, is connected to the input terminal of oil inlet pipe；Oil pump 30, with One end of filter 28 is connected to；Circulating valve 34, has first interface, second interface and third interface, and first interface is connected to oil pump 30 with from 28 oil inlet of filter, the second interface connection filter 28 of circulating valve 34 with to 28 oil return of filter, circulating valve 34 Third interface is connected to 10 fuel feeding of spray gun with the oil inlet 109 of spray gun 10.

In this embodiment, it is connected to, can be filtered into circulating oil path with the input terminal of oil inlet pipe by filter 28 Interior fuel oil, reduces the impurity in fuel oil, and promoting fuel combustion efficiency can also avoid impurity from excessively causing to block；Pass through oil The setting of pump 30 circulates in circulating oil path convenient for driving fuel oil；By the setting of circulating valve 34, convenient in first interface It when being connected to second interface, recycles fuel oil in circulating oil path and is heated by heating device 32, promote fuel oil temperature and avoid coagulating Knot, and in first interface and third orifice, when second interface is closed, fuel oil can flow to the combustion of spray gun 10 from filter 28 Grease chamber 102 builds the pressure.

In the above-described embodiments, burner further include: air inlet pipeline, including the first branch and second branch；The first branch It is equipped with spray gun blow down valve 36, spray gun blow down valve 36 is connected to the oil inlet 109 of spray gun 10；Second branch is equipped with atomization valve 38, atomization valve 38 is connected to the air inlet 105 of spray gun 10；Lighting valve 40 and burning torch 26 interconnected, burning torch 26 are used for Spray gun 10 is lighted after the opening of lighting valve 40.

In this embodiment, the first branch and second branch are provided with by air inlet pipeline, and the first branch is equipped with spray Rifle blow down valve 36, spray gun blow down valve 36 are connected to the oil inlet 109 of spray gun 10；Second branch is equipped with atomization valve 38, atomization valve 38 are connected to the air inlet 105 of spray gun 10, in this way in igniting, can open atomization valve 38, make gas through air inlet pipe, atomization valve 38 enter the gas chamber 104 of spray gun 10, push piston, to make gas and fuel oil while enter the mixing of mixing chamber 132, it is ensured that igniting Success；After igniting, spray gun blow down valve 36 can be opened, makes other fuel oil rooms 102 into spray gun 10, utilizes compressed gas The high pressure of stream purges the trapped fuel in fuel oil room 102, and trapped fuel is avoided to block spray gun 10.

It is to be appreciated that atomization valve 38 is maintained at open state in purging, how can guarantee fuel oil room 102 and mix Conjunction chamber 132 is connected state, so that the trapped fuel in fuel oil room 102 can be under the purging of high pressure gas, into mixing chamber 132, then blown out from the gas that atomization valve 38 enters from nozzle 134, to ensure that the cleaning in mixing chamber 132, avoid Blocking.

The spray gun 10 of the application is medium atomization spray gun 10, thimble structure is used, its main feature is that gun body 100 and guide sleeve 110 are provided with venthole 112, and when compressed air enters gas chamber 104, compressed air can push piston 120 from this venthole 112 It is moved with thimble 122, the end of thimble 122 and the sealing surface of gun body 100 unclamp, and fuel oil sprays, ignition point fuel oil and compression Air can spray simultaneously；

The pipe-line system of burner has circulation, heats, builds the pressure and purge function.After assigning firing command, fuel oil first exists Pipeline internal circulation flow simultaneously carries out heated at constant temperature, is then switched in spray gun 10 and is built the pressure by circulating valve 34, after a certain period of time, pressure Contracting air sprays, and the movement of 10 thimble 122 of spray gun, fuel oil sprays simultaneously, until lighting a fire successfully.It, will using compressed air after flame-out Residual fuel oil purging is removed in spray gun 10, in favor of igniting next time.

Specifically, as shown in Figure 1, spray gun 10 is by the body of a gun 101, pipette tips 130, thimble 122, spring 124, guide sleeve 110, work Plug 120, gland 108 form, and thimble 122, spring 124 and piston 120 are assembled into one to form piston component, the body of a gun 101 and guiding Set 110 is provided with venthole 112.Compressed air is entered the gas chamber 104 of the body of a gun 101 by atomizing medium entrance, and gas chamber 104 leads on one side To the mixing chamber 132 of pipette tips 130, gas chamber 104 leads to cylinder barrel by the venthole 112 on the body of a gun 101 and guide sleeve 110 on one side Chamber 106.Fuel oil leads to the mixing chamber 132 of pipette tips 130 out of oil inlet 109 enters the body of a gun 101 fuel oil room 102.Thimble 122 one end is connect with piston 120, and the other end (i.e. the end of thimble 122) of thimble 122 can be mobile with piston 120, spring 124 are set on thimble 122.When not logical compressed air, thimble 122 by 124 pressure compaction of spring, the end of thimble 122 with The body of a gun 101 forms conical surface seal, and fuel oil can not spray；When compressed air is connected, compressed air can be from the body of a gun 101 and guiding The venthole 112 of set 110 pushes piston 120 and thimble 122 to move, the other end of thimble 122 and the sealing surface pine of the body of a gun 101 It opens, fuel oil sprays.

As shown in fig. 7, the burner is by spray gun 10, combustion chamber 20, stable flame pan 22, blower 24, burning torch 26 and pipeline system System is constituted, and sprays after fuel-oil atmozation from spray gun 10, burning is mixed with air in combustion chamber 20.Oil inlet pipe is by fuel oil filter 28, oil pump 30, oil pressure sensor, circulating valve 34, pressure gauge, pipeline blow down valve, baroswitch, spray gun blow down valve 36, atomization valve 38, the devices composition such as check-valves, gas ignition valve 40, gaseous-pressure switch.Circulation line and fuel oil filter 28 are with heating The first interface of device 32, circulating valve 34 is connected to fuel oil filter 28 through oil inlet pipe, and second interface is connected to combustion through oil return pipe Oil strainer 28, third orifice to spray gun 10, original state are that first interface and second interface are connected to fuel oil filter 28。

As shown in figure 8, the embodiment of third aspect present invention provides a kind of control method, in above-mentioned second aspect The burner of any one embodiment；Include: