High efficiency and heat radiation formula plasma arc cutting torchTechnical field
The utility model is related to plasma arc cutting torch technical field, especially a kind of high efficiency and heat radiation formula plasma arc cutting torch.
Background technology
Cutting torch is the important tool of gas welding, existing machine type plasma arc cutting torch design structure letter on domestic marketSingle, production process is poor, along with the technical college of domestic not this respect, lacks technological know-how education, so technology oneCause fall behind the epoch, cause the cutting torch cutting power made weak, and cut quality is poor, expendable part service life band, using atThis some high row problem；In practical work process, electrode and spout belong to expendable part, for electric current reach 200A and withIt when upper, needed to cool down electrode and spout, existing way is cutting torch internal electrode by the way of water cooling, and spoutOr by the way of air cooling, cause the cooling effect of cutting torch bad, and the service life of expendable part is low, cut quality differenceProblem.
Utility model content
The technical problems to be solved in the utility model is：It is bad in order to solve cooling effect inside cutting torch in the prior art,The service life of expendable part is low, and the problem of cut quality difference, now provides a kind of high efficiency and heat radiation formula plasma arc cutting torch.
Technical solution adopted by the utility model to solve its technical problems is：A kind of high efficiency and heat radiation formula plasma arc is cutTorch, including sequentially connected torch body, cutting torch pedestal and pressure cap are inserted with electrodes base, the electricity in the cutting torch pedestalInterior insulation body is provided between pole pedestal and cutting torch pedestal, the interior insulation body is fixed with spout close to one end of pressure cap, describedElectrodes base is fixed with the electrode with endoporus close to one end of pressure cap, and the electrode extends to the inside of spout, the pressure capIt is set in the outside of spout, intake tunnel and exhalant canal are offered on the electrodes base, is communicated on the intake tunnelCentral water tube, the central water tube extend in the endoporus of electrode, shape between the outer wall of the central water tube and the inner wall of endoporusThe electrode water cooling chamber of Cheng Youyu central water tubes connection, is formed with spout water cooling chamber between the outer wall and pressure cap of the spout, describedElectrode water cooling chamber is connected to spout water cooling chamber, and the exhalant canal is connected to spout water cooling chamber.
In this programme by the way of interior circulating water, the cooling effect of torch body and key fitment is allowed to reach bestState reduces the consumption of accessory, improves the consistency cut by the mass of cutting workpiece and reduces the production and application of userCost, specially：Coolant liquid enters from the intake tunnel of electrodes base, then reaches electrode water cooling chamber to electrode through central water tubeWater cooling is carried out, spout water cooling chamber is subsequently flowed into and water cooling is carried out to spout, finally flowed out from the exhalant canal of electrodes base, realized coldBut liquid successively cools down motor and spout.
Specifically, the deflector hole being connected to electrode water cooling chamber is offered on the outer wall of the electrode, the interior insulation bodyThe diversion chamber being connected to deflector hole is formed between the outer wall of inner wall, the outer wall of electrodes base and electrode, the interior insulation bodyBe formed with inlet opening and apopore between outer wall and the inner wall of cutting torch pedestal, the both ends of the inlet opening respectively with diversion chamber and spraySaliva cold house is connected to, and the both ends of the apopore are connected to spout water cooling chamber and exhalant canal respectively；Pass through deflector hole, diversion chamberAnd the setting of inlet opening, realize coolant flow in electrode water cooling chamber to spout water cooling chamber；By the setting of apopore, realizeCoolant liquid in spout water cooling chamber is back to exhalant canal discharge.
Since the position where hafnium filament on electrode is fever end, the extreme temperatures at the position at work, forThis, further, the central water tube is threadedly secured in intake tunnel, and the electrode is inlaid with close to one end end of spoutHafnium filament has gap, the portion of the endoporus bottom hole face hafnium filament between the bottom terminal ends of the central water tube and the bottom hole of endoporusPosition has upwardly extended protrusion, and the protruding parts is in central water tube, wherein using in extending into the protrusion in endoporusIn edema with the heart involved pipe, the fever end of electrode can be allowed to have the heat dissipation area of bigger with coolant liquid, allow cold and hot liquid to penetrate into electrode nethermostGenerate heat end, to improve the heat dissipation performance of electrode.
Specifically, gas flow of ions channel is offered on the electrodes base, the electrode jacket is equipped with distributor, described interiorGas flow of ions distributor chamber is offered on insulator, between the outer wall of the interior insulation body, the inner wall of spout and the outer wall of distributorBe formed with the first ion-gas flow chamber, be formed between the inner wall of the inner wall of the distributor, the outer wall of electrode and spout second fromSub-stream nozzle room, gas flow of ions dispensing orifice is offered on the distributor, and the gas flow of ions channel connects with gas flow of ions distributor chamberLogical, the gas flow of ions distributor chamber is connected to the first ion-gas flow chamber, and the first ion-gas flow chamber is distributed by gas flow of ionsHole is connected to the second ion-gas flow chamber, and the spout passes through pressure cap, the one end of the spout far from electrode close to one end of pressure capEnd has the central through hole being connected to the second ion-gas flow chamber；Gas flow of ions initially enters the ion-gas circulation of electrodes baseThen road enters the first ion-gas flow chamber from gas flow of ions distributor chamber, and pass through the ion of distributor from the first ion-gas flow chamberThe second ion-gas flow chamber is entered after the uniform divided flows in distribution of air flow hole, is used as cutting gas.
In order to improve cut quality, further, it is arranged with copper housing outside the cutting torch pedestal, is arranged with outside the pressure capProtective cover, the copper housing and between protective cover and torch body offer protection air-flow distribution on the cutting torch pedestalRoom is formed with protection air-flow between the inner wall of the copper housing, the inner wall of protective cover, the outer wall of cutting torch pedestal and the outer wall of pressure capRoom, the protection air-flow distributor chamber are connected to protection air-flow room, and running through on the protective cover has the guarantor being connected to protection air-flow roomProtect air-flow centre bore, the protection air-flow centre bore and central through hole face；Protective cover is in order to which plasma is used automatically in machineThe accessory specially added when chemical industry is made, the quality of cut quality directly depend on spout, it can effective protection spout reduction damageWound, to make protective cover play a protective role；Additionally by the setting of protective cover so that forming individual guarantor in the outside of pressure capGas circuit is protected, protection gas enters protection air-flow room from the protection air-flow distributor chamber of cutting torch pedestal, realizes and reaches pressure cap and protective coverInterlayer, finally from the protection air-flow centre bore of protective cover spray, protection cutting workpiece scum splash, enhance cutting power,The two-way air source independent control for realizing protection gas and ion-gas simultaneously meets the difference to cutting plate thickness and plank material significantlyThe cutting demand of specification condition, keeps cutting finer.
Further, the inner wall of the one end of the torch body far from cutting torch pedestal is filled with glue filler, the glueWater filler connects with cutting torch pedestal, and water inlet pipe is communicated on the intake tunnel, outlet pipe is communicated on the exhalant canal,It is communicated with ion tracheae on the gas flow of ions channel, protection tracheae, the water inlet are communicated on the protection air-flow distributor chamberPipe, outlet pipe, ion tracheae and protection tracheae both pass through glue filler, and all extend to the outside of torch body, water inlet pipe,Convenient for connecing gas circuit and water route, glue filler can be by water inlet pipe, outlet pipe, ion-gas for outlet pipe, ion tracheae and protection tracheaePipe and protection tracheae are fixed in torch body, while can play the role of sealing.
Further, the inner wall of the torch body is fixed with outer insulator, and the cutting torch pedestal and glue filler are equalIt is separated by the inner wall of outer insulator and torch body, the outer insulator is outwardly protruded close to one end of spout in cutting torch sheetBody, the copper housing, which is connected through a screw thread, to be fixed on outer insulator and protrudes from the position of torch body, and copper housing is mounted on outerOn insulator, so that exposed copper housing is completely cut off with cutting torch built-in electrical insulation, avoid security risk, and when cutting torch worksEven if cutting torch lower end collides workpiece, the phenomenon for generating short circuit between cutting torch and workpiece will not be made, used to improve cutting torchReliability.
Specifically, the protective cover is fixed on outside copper by fixed cover and is put on.
Preferably, the material of the pressure cap is red copper.
Further, the material of the central water tube is high molecular material.
The utility model has the beneficial effects that：The high efficiency and heat radiation formula plasma arc cutting torch of the utility model uses interior recirculated waterCooling mode allows the cooling effect of torch body and key fitment to reach optimum state, reduces the consumption of accessory, improves quiltIt cuts the consistency of the mass cutting of workpiece and reduces the production and application cost of user, and gas and ion-gas is protected to use two-wayAir source can independent control, meet significantly to cutting plate thickness and plank material different size condition cutting demand, improve cuttingFineness.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the utility model high efficiency and heat radiation formula plasma arc cutting torch；
Fig. 2 is the close-up schematic view of A in Fig. 1.
In figure：1, torch body, 2, cutting torch pedestal, 3, pressure cap, 4, electrodes base, 4-1, intake tunnel, 4-2, water outlet are logicalRoad, 4-3, gas flow of ions channel, 5, interior insulation body, 5-1, gas flow of ions distributor chamber, 6, spout, 6-1, central through hole, 7, electrode,7-1, deflector hole, 7-2, protrusion, 8, central water tube, 9, electrode water cooling chamber, 10, spout water cooling chamber；
11, diversion chamber, 12, inlet opening, 13, apopore, 14, hafnium filament, 15, distributor, 15-1, gas flow of ions dispensing orifice,16, the first ion-gas flow chamber, the 17, second ion-gas flow chamber, 18, copper housing, 19, protective cover, 19-1, protection air-flow centre bore；
20, protection air-flow distributor chamber, 21, protection air-flow room, 22, glue filler, 23, water inlet pipe, 24, outlet pipe, 25,Ion tracheae, 26, protection tracheae, 27, outer insulator, 28, fixed cover.
Specific implementation mode
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model, directionIt can be only used for helping the description to the feature in attached drawing with reference to (for example, upper and lower, left and right, etc.).Therefore, it is not limitingDetailed description below is used in property meaning processed, and is only asked by appended claims and its equivalent form to limitThe range of the theme of protection.
Embodiment 1
As shown in Figs. 1-2, a kind of high efficiency and heat radiation formula plasma arc cutting torch, including sequentially connected torch body 1, cutting torch bottomSeat 2 and pressure cap 3 is inserted with electrodes base 4 in cutting torch pedestal 2, interior insulation body is provided between electrodes base 4 and cutting torch pedestal 25, interior insulation body 5 is fixed with spout 6 close to one end of pressure cap 3, and electrodes base 4 is fixed with close to one end of pressure cap 3 with endoporusElectrode 7, which is blind hole, and electrode 7 extends to the inside of spout 6, and pressure cap 3 is set in the outside of spout 6, electrodes base 4On offer intake tunnel 4-1 and exhalant canal 4-2, central water tube 8 is communicated on intake tunnel 4-1, central water tube 8 extends toIn the endoporus of electrode 7, the electrode water cooling being connected to central water tube 8 is formed between the outer wall of central water tube 8 and the inner wall of endoporusRoom 9 is formed with spout water cooling chamber 10 between the outer wall and pressure cap 3 of spout 6, and electrode water cooling chamber 9 is connected to spout water cooling chamber 10, goes outAquaporin-4-2 is connected to spout water cooling chamber 10.
Wherein, stainless steel can be used in the material of torch body 1, on the one hand improves the intensity of cutting torch entirety, on the other hand makesCutting torch overall quality is more high-end；The material of pressure cap 3 is red copper, and pressure cap 3 can be used threaded connection and be fixed on cutting torch pedestal 2, andFor fixing spout 6, the interior step surface inside pressure cap 3 is against the between outer land terrace of 6 bottom end of spout, and the upper end of pressure cap 3 is by sealingCircle is sealed with cutting torch pedestal 2, and the lower end of pressure cap 3 also utilizes sealing ring to be sealed with spout 6；Electrode 7 is equally solid using being threadedly coupledIt is scheduled on electrodes base 4；Sealing ring is arranged between electrode 7 and interior insulation body 5 to be sealed.
Several deflector hole 7-1 being connected to electrode water cooling chamber 9 are offered on the outer wall of electrode 7, and deflector hole 7-1 is along electrode7 circumferencial direction is uniformly distributed, be formed between the outer wall of the inner wall of interior insulation body 5, the outer wall of electrodes base 4 and electrode 7 withThe diversion chamber 11 of deflector hole 7-1 connection, be formed between the outer wall and the inner wall of cutting torch pedestal 2 of interior insulation body 5 inlet opening 12 andThe both ends of apopore 13, inlet opening 12 are connected to diversion chamber 11 and spout water cooling chamber 10 respectively, the both ends of apopore 13 respectively withSpout water cooling chamber 10 is connected to exhalant canal 4-2；By the setting of deflector hole 7-1, diversion chamber 11 and inlet opening 12, electrode is realizedCoolant flow in water cooling chamber 9 is to spout water cooling chamber 10；By the setting of apopore 13, realize cold in spout water cooling chamber 10But liquid is back to exhalant canal 4-2 discharges, and deflector hole 7-1 can also play the role of strainer, can block up welding slag when electrode is burntFirmly in the electrode water cooling chamber 9 before deflector hole 7-1, prevent welding slag from will be blocked inside cutting torch.
Central water tube 8 is threadedly secured in intake tunnel 4-1, and electrode 7 is inlaid with hafnium filament close to one end end of spout 614, there is gap, the position of endoporus bottom hole face hafnium filament 14 is prolonged upwards between the bottom terminal ends of central water tube 8 and the bottom hole of endoporusStretching has protrusion 7-2, and protrusion 7-2 is located in central water tube 8, wherein extend into center using by the protrusion 7-2 in endoporusIn water pipe 8, the fever end of electrode 7 can be allowed to have the heat dissipation area of bigger with coolant liquid, allow cold and hot liquid to penetrate into electrode 7 nethermostGenerate heat end, to improve the heat dissipation performance of electrode 7；The material of central water tube 8 is high molecular material, and high molecular material has insulationAnd heat-resisting quantity, when electrode 7 is burnt, 8 meetings of central water tube of high molecular material are melted by electrode 7, not will produce welding slag,Therefore, the rear afterflow for avoiding causing because of the welding slag that central water tube 8 generates when electrode 7 is burnt inside cutting torch is effectively avoidedRoad is blocked by welding slag.
Gas flow of ions channel 4-3 is offered on electrodes base 4, is arranged with distributor 15 outside electrode 7, is opened on interior insulation body 5Equipped with gas flow of ions distributor chamber 5-1, is formed between the outer wall of the outer wall of interior insulation body 5, the inner wall of spout 6 and distributor 15One ion-gas flow chamber 16 is formed with the second gas flow of ions between the inner wall of the inner wall of distributor 15, the outer wall of electrode 7 and spout 6Room 17 offers gas flow of ions dispensing orifice 15-1, gas flow of ions channel 4-3 on distributor 15 and connects with gas flow of ions distributor chamber 5-1Logical, gas flow of ions distributor chamber 5-1 is connected to the first ion-gas flow chamber 16, and the first ion-gas flow chamber 16 passes through gas flow of ions dispensing orifice15-1 is connected to the second ion-gas flow chamber 17, and spout 6 passes through pressure cap 3, the one end of spout 6 far from electrode 7 close to one end of pressure cap 3End has the central through hole 6-1 being connected to the second ion-gas flow chamber 17；Gas flow of ions initially enters the ion-gas of electrodes base 4Then circulation road 4-3 enters the first ion-gas flow chamber 16 from gas flow of ions distributor chamber 5-1, and is passed through from the first ion-gas flow chamber 16The second ion-gas flow chamber 17 is entered after crossing the uniform divided flows of the gas flow of ions dispensing orifice 15-1 of distributor 15, is used as cutting gasBody；
Wherein, one end of distributor 15 is against on interior insulation body 5, and the other end is against on the step surface in spout 6, distributorBetween 15 inner wall and electrode 7 and sealing ring is respectively provided between the outer wall and spout 6 of distributor 15 to be sealed.
Be arranged with copper housing 18 outside cutting torch pedestal 2, be arranged with protective cover 19 outside pressure cap 3, copper housing 18 be located at protective coverBetween 19 and torch body 1, protection air-flow distributor chamber 20 is offered on cutting torch pedestal 2, the inner wall of copper housing 18, protective cover 19Protection air-flow room 21, protection air-flow distributor chamber 20 and guarantor are formed between the outer wall of inner wall, the outer wall of cutting torch pedestal 2 and pressure cap 3It protects airflow chamber 21 to be connected to, through there is the protection air-flow centre bore 19-1 being connected to protection air-flow room 21 on protective cover 19, protects gasFlow center hole 19-1 and central through hole 6-1 faces；Protective cover 19 is in order to which plasma specially adds in machine automatically workingThe quality of the accessory added, cut quality directly depends on spout 6, its energy effective protection spout 6 reduces damage, to make protectionCover 19 plays a protective role；Additionally by the setting of protective cover 19 so that forming individually protection gas circuit, guarantor in the outside of pressure cap 3Shield gas enters protection air-flow room 21 from the protection air-flow distributor chamber 20 of cutting torch pedestal 2, realizes and reaches pressure cap 3 and protective cover 19Interlayer is finally sprayed from the protection air-flow centre bore 19-1 of protective cover 19, and the scum of protection cutting workpiece splashes, enhancing cutting energyPower, while the two-way air source independent control of protection gas and ion-gas is realized, meet significantly to cutting plate thickness and plank materialThe cutting demand of different size condition, keeps cutting finer；
The inner wall of the one end of torch body 1 far from cutting torch pedestal 2 be filled with glue filler 22, glue filler 22 with cutTorch pedestal 2 connects, and water inlet pipe 23 is communicated on intake tunnel 4-1, outlet pipe 24, gas flow of ions are communicated on exhalant canal 4-2It is communicated with ion tracheae 25 on the 4-3 of channel, protection tracheae 26, water inlet pipe 23, outlet pipe are communicated on protection air-flow distributor chamber 2024, ion tracheae 25 and protection tracheae 26 both pass through glue filler 22, and all extend to the outside of torch body 1, water inlet pipe23, outlet pipe 24, ion tracheae 25 and protection tracheae 26 be convenient for connecing gas circuit and water route, glue filler 22 can by water inlet pipe 23,Outlet pipe 24, ion tracheae 25 and protection tracheae 26 are fixed in torch body 1, while can play the role of sealing.
The inner wall of torch body 1 is fixed with outer insulator 27, and cutting torch pedestal 2 and glue filler 22 pass through outer insulator27 separate with the inner wall of torch body 1, and outer insulator 27 is outwardly protruded close to one end of spout 6 in torch body 1, copper housing 18It is connected through a screw thread and is fixed on outer insulator 27 and protrudes from the position of torch body 1, copper housing 18 is mounted on outer insulator 27On, so that exposed copper housing 18 is completely cut off with cutting torch built-in electrical insulation, security risk is avoided, even and if when cutting torch worksCutting torch lower end collides workpiece, will not make to generate the phenomenon of short circuit between cutting torch and workpiece, to improve that cutting torch uses canBy property.
Protective cover 19 is fixed on by fixed cover 28 on copper housing 18, and fixed cover 28, which is connected through a screw thread, is fixed on copper housingOn 18, there is between outer land terrace, the lower end of fixed cover 28 to have interior step surface, pass through the interior platform of fixed cover 28 for the upper end of protective cover 19Terrace is against the between outer land terrace of protective cover 19, and protective cover 19 is pressed on copper housing 18 to realize, that is, realizes protective cover 19Fixation.
Above-mentioned high efficiency and heat radiation formula plasma arc cutting torch when in use, a cooling water channel of cutting torch and two gas circuits it is specificFlow direction is as follows：
Cooling water channel：Coolant liquid enters the intake tunnel 4-1 of electrodes base 4 from extraneous water inlet pipe 23, in then passing throughEdema with the heart involved pipe 8 reaches electrode water cooling chamber 9 and carries out water cooling to electrode 7, then followed by deflector hole 7-1, diversion chamber 11 and inlet opening12 reach spout water cooling chamber 10 carries out water cooling to spout 6, is then back to exhalant canal 4-2 through apopore 13, and logical from water outletRoad 4-2 is discharged through outlet pipe 24；
Ion gas circuit：Gas flow of ions enters the gas flow of ions channel 4-3 of electrodes base 4 from extraneous ion tracheae 25, soEnter the first ion-gas flow chamber 16 from gas flow of ions distributor chamber 5-1 afterwards, and from the first ion-gas flow chamber 16 by distributor 15The second ion-gas flow chamber 17 is entered after the uniform divided flows of gas flow of ions dispensing orifice 15-1, is used as cutting gas, what electrode 7 generatedIon arc is focused by the central through hole 6-1 of spout 6 to be sprayed, and ion arc is cut to generate high-energy；
Protect gas circuit：Protect gas from the extraneous protection air-flow distributor chamber 20 for protecting tracheae 26 to enter cutting torch pedestal 2, and fromThe protection air-flow distributor chamber 20 of cutting torch pedestal 2 enters protection air-flow room 21, realizes the interlayer for reaching pressure cap 3 and protective cover 19,It is finally sprayed from the protection air-flow centre bore 19-1 of protective cover 19, to protect scum when cutting workpiece to splash, and enhancing is cutCut ability.
The above-mentioned desirable embodiment according to the utility model is enlightenment, through the above description, relevant staffVarious changes and amendments can be carried out in the range of without departing from this item utility model technological thought completely.This item is practicalNovel technical scope is not limited to the contents of the specification, it is necessary to determine that its is technical according to rightRange.