CN220926895U - Spraying nozzle structure and plasma spraying equipment system formed by same - Google Patents
Spraying nozzle structure and plasma spraying equipment system formed by same Download PDFInfo
- Publication number
- CN220926895U CN220926895U CN202322689927.8U CN202322689927U CN220926895U CN 220926895 U CN220926895 U CN 220926895U CN 202322689927 U CN202322689927 U CN 202322689927U CN 220926895 U CN220926895 U CN 220926895U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- powder
- powder feeding
- shell
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005507 spraying Methods 0.000 title abstract description 20
- 238000007750 plasma spraying Methods 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 214
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 37
- 239000007921 spray Substances 0.000 claims description 16
- 239000012212 insulator Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
The utility model relates to the field of plasma spraying, and particularly discloses a spraying nozzle structure and a plasma spraying equipment system formed by the same, wherein the spraying nozzle comprises a nozzle, the nozzle comprises a nozzle shell and a nozzle main body positioned in the nozzle shell, and a water cooling cavity is formed between the inner wall of the nozzle shell and the outer wall of the nozzle main body; the nozzle main body comprises an air supply shell and a cathode rod, an air supply channel is arranged between the inner wall of the air supply shell and the outer wall of the cathode rod, an air inlet is arranged at the rear end of the air supply shell, and an air nozzle is arranged at the front end of the air supply shell; the powder feeding assembly is arranged on the nozzle shell and sequentially comprises a powder feeding inlet, a powder feeding main body and a powder feeding auxiliary section, wherein the powder feeding inlet penetrates through the nozzle shell, the powder feeding main body is provided with a powder feeding main channel, the powder feeding auxiliary section is provided with a horn mouth powder feeding channel, and the anode body is arranged on the powder feeding auxiliary section. The powder feeding component forms plasma jet and is preheated outside the nozzle main body for a period of time, and meanwhile, spraying powder is uniformly stressed, so that the spraying quality is better.
Description
Technical Field
The utility model relates to the field of plasma spraying, in particular to a spraying nozzle structure and a plasma spraying equipment system formed by the same.
Background
The plasma arc has the characteristics of high temperature, concentrated energy, good stability, good regulation and the like, and the plasma spraying can melt various metals including high-melting tungsten and tungsten alloy, metal oxides and high-temperature resistant ceramic materials, so that various coatings with high hardness, wear resistance, high temperature resistance, oxidation resistance, corrosion resistance and the like and good physical and chemical properties are prepared, and the plasma arc has wide application prospects in the industrial fields of aviation, aerospace, atomic energy and the like. At present, the powder feeding mode of the plasma spraying gun comprises two modes of powder feeding in the gun and powder feeding outside the gun. Powder feeding in the gun is mainly of two types; one type is to inject powder vertically or obliquely into the plasma jet; the other type is that the powder particles are injected into the plasma jet flow along the axial direction through the central hole of the hollow cathode, but the heated powder particles are easy to adhere to the inner wall of a nozzle duct or block the hollow cathode, so that the plasma jet flow is unstable, the nozzle is complex to process, install and debug, the service life is short, besides, the processing difficulty of the hollow cathode structure adopting the axial powder feeding mode to achieve the good heating acceleration effect is very high, and the service life is very short.
The utility model patent with the publication number of CN204244558U discloses a lateral internal powder feeding plasma spraying gun structure with an efficient heating mode; the anode nozzle duct of the spray gun adopts a three-section structure, which is respectively a front compression section, a middle stable arc powder feeding section and a rear expansion inclined section. Although the spraying powder is nearly axially fed into the plasma jet by adopting the three-section type, the spraying powder is fed from one direction of the plasma jet, and the arc-stabilizing powder feeding section and the subsequent expanding inclined section are locally subjected to very large force, so that equipment is easy to damage, and the powder spraying quality is poor.
Disclosure of utility model
The utility model aims to solve the technical problems pointed out in the background art and provides a spray nozzle structure and a plasma spraying equipment system formed by the same.
The aim of the utility model is achieved by the following technical scheme:
The spray nozzle structure comprises a nozzle, wherein the nozzle comprises a nozzle shell and a nozzle main body positioned in the nozzle shell, and a water cooling cavity is formed between the inner wall of the nozzle shell and the outer wall of the nozzle main body; the nozzle main body comprises an air supply shell and a cathode rod positioned in the air supply shell, an air supply channel is arranged between the inner wall of the air supply shell and the outer wall of the cathode rod, an air inlet communicated with the air supply channel is arranged at the rear end of the air supply shell, and an air nozzle is arranged at the front end of the air supply shell; the powder feeding device comprises a nozzle shell, a powder feeding component, a powder feeding inlet, a powder feeding main body and a powder feeding auxiliary section, wherein the powder feeding component sequentially comprises the powder feeding inlet, the powder feeding main body and the powder feeding auxiliary section, the powder feeding inlet penetrates through the nozzle shell, the powder feeding main body and the powder feeding auxiliary section are positioned inside the nozzle shell and outside the nozzle body, the powder feeding main body is provided with a powder feeding main channel communicated with the powder feeding inlet, the powder feeding auxiliary section is provided with a horn mouth powder feeding channel corresponding to an air nozzle, and an anode body is arranged on the powder feeding auxiliary section.
In order to better realize the utility model, the front end of the nozzle shell is provided with a water inlet communicated with the water cooling cavity, and the rear end of the nozzle shell is provided with a water outlet communicated with the water cooling cavity.
Preferably, an annular insulator is further connected between the inner wall of the nozzle shell and the outer wall of the nozzle main body, and a plurality of water flow holes are formed in the annular insulator in a penetrating manner; the annular insulator separates the nozzle housing into a front housing and a rear housing.
Preferably, the inside of the nozzle main body is connected with a cathode mounting seat, the cathode rod is fixed on the cathode mounting seat, the front end of the cathode rod is provided with a curved head, and the front end of the air supply shell is provided with a nozzle bell mouth section corresponding to the curved head.
Preferably, the horn mouth powder feeding channel is positioned between the outer wall of the horn mouth section of the nozzle and the inner wall of the powder feeding auxiliary section.
Preferably, the anode body comprises an anode connecting part and a bell-shaped nozzle body, and the anode connecting part is connected to the outer wall of the powder feeding auxiliary section in a sealing way; the front end of the nozzle shell is provided with a nozzle seat, the end of the bell-shaped nozzle body is arranged on the nozzle seat, the bell-shaped nozzle body is provided with a bell-shaped nozzle cavity communicated with the horn mouth powder feeding channel and the air nozzle, and the middle of the nozzle seat is provided with a nozzle opening communicated with the bell-shaped nozzle cavity.
Preferably, the outer wall of the powder feeding auxiliary section is provided with a fastener, and the anode connecting part is detachably arranged on the fastener; the outer side wall of the fastener is provided with first sealing sawteeth, and the inner side wall of the anode connecting part is provided with second sealing sawteeth meshed with the first sealing sawteeth.
Preferably, the outer side of the front end part of the powder feeding auxiliary section is sleeved and fixed with an annular stop block, an assembly gap is formed between the front end of the fastener and the annular stop block, a second sealing ring is installed in the assembly gap in a matched mode, and the fastener is sleeved with a first sealing ring at the rear end position of the first sealing saw tooth.
The plasma spraying equipment system comprises a spraying nozzle structure, a power supply, an air supply device, a water supply device and a powder supply device, wherein the spraying nozzle structure comprises a spraying nozzle, the power supply, the air supply device, the water supply device and the powder supply device; the water delivery device is communicated with water cooling cavity circulating water in the nozzle shell; the air outlet end of the air supply device is communicated with the air inlet of the air supply shell in a sealing way; the powder outlet end of the powder feeding device is communicated with the powder feeding inlet in a sealing way.
Preferably, the powder feeding device comprises a powder storage box body, a powder feeding pipe and a powder feeder, wherein the first end of the powder feeding pipe is communicated with the powder storage box body, the second end of the powder feeding pipe is communicated with the powder feeder, a centrifugal fan is arranged on the powder feeding pipe, and the powder feeder is connected with a powder feeding inlet; the powder feeder comprises a powder feeder shell, a motor, a spiral stirring assembly and a powder feeder channel, wherein the powder feeder shell is funnel-shaped, the motor is arranged at the top of the powder feeder shell, the spiral stirring assembly is arranged on a rotating shaft of the motor, the axis of the spiral stirring assembly is coincident with the axis of the powder feeder shell, the powder feeder channel is arranged at the bottom of the powder feeder shell, and an air vibrator is arranged above the powder feeder channel.
Compared with the prior art, the utility model has the following advantages:
(1) The powder feeding component is provided with the powder feeding main body and the powder feeding auxiliary section, and the powder feeding main body and the powder feeding auxiliary section are preheated outside the nozzle main body for a period of time, so that the heating time of powder in plasma jet flow is shortened, the spraying quality is better, and the powder feeding main body section plays an important role in stabilizing the speed and the distribution uniformity of the powder in a powder feeding channel.
(2) The utility model adopts the inner horn mouth and the outer horn mouth to form the powder feeding channel, so that the force applied by the spraying powder when entering the plasma jet flow is more uniform, and the parts of the anode uniformly bear the action of the force, thereby avoiding the influence on the nozzle caused by overlarge local stress.
(3) According to the utility model, the included angle between the horn mouth powder feeding channel and the direction of the plasma jet is controlled to be 10-15 degrees, so that the influence of overlarge direction change on the spraying quality when powder enters the plasma jet is effectively avoided, and the nozzle is effectively protected to prevent damage.
Drawings
FIG. 1 is a schematic view of a nozzle according to the present utility model;
FIG. 2 is a schematic diagram of a connection structure between a powder feeding auxiliary section and an anode connection part in an embodiment;
FIG. 3 is a schematic view of the structure of a ring insulator in an embodiment;
FIG. 4 is a schematic block diagram of a plasma spray apparatus system comprised of nozzles in an embodiment;
FIG. 5 is a schematic diagram of a powder feeding device according to an embodiment;
fig. 6 is a schematic diagram of a powder feeder in an embodiment.
Wherein, the names corresponding to the reference numerals in the drawings are:
1-nozzle, 10-fastener, 11-nozzle housing, 111-rear housing, 112-front housing, 113-nozzle holder, 114-water outlet, 115-water inlet, 12-nozzle body, 121-nozzle flare section, 122-air feed housing, 123-cathode mount, 124-air feed channel, 125-air inlet, 13-water cooling cavity, 14-powder feed assembly, 141-flare powder feed channel, 142-powder feed inlet, 143-powder feed body, 144-powder feed auxiliary section, 145-powder feed main channel, 146-first seal serrations, 147-second seal serrations, 148-first sealing ring, 149-second sealing ring, 150-annular stop, 15-cathode rod, 151-third sealing ring, 152-curved surface head, 16-anode body, 161-anode connecting part, 162-bell-shaped nozzle body, 17-annular insulator, 171-water flow hole, 2-power supply, 3-air supply device, 4-water supply device, 5-powder supply device, 51-powder storage box body, 52-powder supply pipe, 53-powder supply device, 531-powder supply device shell, 532-motor, 533-spiral stirring component, 534-powder supply channel, 535-air vibrator and 54-centrifugal fan.
Detailed Description
The utility model is further illustrated by the following examples:
Examples
As shown in fig. 1, a spray nozzle structure comprises a nozzle 1, wherein the nozzle 1 comprises a nozzle shell 11 and a nozzle body 12 positioned in the nozzle shell 11, and a water cooling cavity 13 is formed between the inner wall of the nozzle shell 11 and the outer wall of the nozzle body 12. The nozzle body 12 includes a gas feed case 122 and a cathode rod 15 positioned inside the gas feed case 122, a gas feed passage 124 is provided between an inner wall of the gas feed case 122 and an outer wall of the cathode rod 15 (as shown in fig. 1, the gas feed passage 124 is a passage between the inside of the gas feed case 122 and the outside of the cathode rod 15), a gas inlet 125 (when in use, gas is introduced through the gas inlet 125) is provided at a rear end of the gas feed case 122, and a gas nozzle is provided at a front end of the gas feed case 122, and ejects the gas. The powder feeding assembly 14 is mounted on the nozzle housing 11, the powder feeding assembly 14 is sequentially composed of a powder feeding inlet 142, a powder feeding main body 143 and a powder feeding auxiliary section 144, the powder feeding inlet 142 is arranged through the nozzle housing 11 (a part of the powder feeding inlet 142 is positioned outside the nozzle housing 11, and a part of the powder feeding inlet extends into the inside of the nozzle housing 11), the powder feeding main body 143 and the powder feeding auxiliary section 144 are positioned inside the nozzle housing 11 and outside the nozzle main body 12, and the powder feeding inlet 142, the powder feeding main body 143 and the powder feeding auxiliary section 144 of the powder feeding assembly 14 are preferably of an integral structure with a sealed powder feeding main channel 145 and a bell mouth powder feeding channel 141. The powder feeding main body 143 has a powder feeding main passage 145 communicating with the powder feeding inlet 142, the powder feeding auxiliary section 144 has a horn mouth powder feeding passage 141 corresponding to the air nozzle (the horn mouth powder feeding passage 141 communicates with the powder feeding main passage 145; as shown in fig. 1, the horn mouth powder feeding passage is located between the outer wall of the nozzle horn mouth section 121 and the inner wall of the powder feeding auxiliary section 144), and the anode body 16 is mounted on the powder feeding auxiliary section 144, and the anode body 16 corresponds to the cathode rod 15 for generating plasma gas. Preferably, the included angle between the horn mouth powder feeding channel 141 and the length direction of the cathode rod 15 is 10-15 degrees; by controlling the included angle between the horn mouth powder feeding channel 141 and the direction of the plasma jet to be 10-15 degrees, the influence on the spraying quality caused by overlarge direction change when powder enters the plasma jet is effectively avoided, and the nozzle is effectively protected from damage.
In some embodiments, as shown in fig. 1, the front end of the nozzle housing 11 is provided with a water inlet 115 communicating with the water cooling cavity 13, and the rear end of the nozzle housing 11 is provided with a water outlet 114 communicating with the water cooling cavity 13. The water inlet 115 and the water outlet 114 are respectively connected with the water delivery device 4 correspondingly, for example, the water outlet end of the water delivery device 4 is communicated with the water inlet 115 in a sealing way, the water inlet end of the water delivery device 4 is communicated with the water outlet 114 in a sealing way, the water delivery device 4 is preferably a circulating condensing device, water discharged from the water outlet 114 can be cooled into cooling water, and then the cooling water is circularly conveyed to the inside of the nozzle shell 11 through the water outlet 114 for cooling treatment, and when the temperature in the nozzle shell 11 is too high, the water delivery device 4 can be started for cooling treatment.
In some embodiments, an annular insulator 17 is further connected between the inner wall of the nozzle housing 11 and the outer wall of the nozzle body 12, and as shown in fig. 4, a plurality of water flow holes 171 are formed through the annular insulator 17. The annular insulator 17 divides the nozzle housing 11 into a front housing 112 and a rear housing 111, and preferably the annular insulator 17 serves to connect the front housing 112 and the rear housing 111 for easy assembly and disassembly operations, and the water flow holes 171 in the annular insulator 17 serve to communicate water flow in the front housing 112 and the rear housing 111.
Referring to fig. 1, a cathode mounting seat 123 is connected inside the nozzle body 12 (the cathode mounting seat 123 is preferably T-shaped, the end of the cathode mounting seat 123 is fixedly connected with the inner wall of the nozzle body 12, a ventilation channel is also formed at the end of the cathode mounting seat 123, so that the gas entering through the gas inlet 125 can smoothly enter into the gas feeding channel 124), a cathode rod 15 is fixed on the cathode mounting seat 123, a curved surface head 152 is formed at the front end of the cathode rod 15, a nozzle bell mouth section 121 corresponding to the curved surface head 152 is formed at the front end of the gas feeding shell 122, and a conical gas nozzle is formed between the nozzle bell mouth section 121 and the curved surface head 152.
The powder feeding channel is formed by adopting the inner horn mouth and the outer horn mouth, so that the force applied by the spraying powder when entering the plasma jet flow is more uniform, and the parts of the anode are uniformly applied with the force, so that the influence on the nozzle caused by overlarge local stress is avoided.
As shown in fig. 1 and 2, the anode body 16 includes an anode connecting portion 161 and a bell mouth 162, and the anode connecting portion 161 is sealingly connected to the outer wall of the auxiliary powder feeding section 144. The front end of the nozzle shell 11 is provided with a nozzle seat 113, the end of a bell-shaped nozzle body 162 is arranged on the nozzle seat 113, the bell-shaped nozzle body 162 is provided with a bell-shaped nozzle cavity communicated with a horn mouth powder feeding channel and an air nozzle, and the middle part of the nozzle seat 113 is provided with a nozzle opening communicated with the bell-shaped nozzle cavity. The fastener 10 is mounted on the outer wall of the powder feeding auxiliary section 144, and the anode connecting portion 161 is detachably mounted on the fastener 10. The outer side wall of the fastener 10 is provided with first sealing saw teeth 146, and the inner side wall of the anode connecting portion 161 is provided with second sealing saw teeth 147 meshed with the first sealing saw teeth 146. The use of the fastener 10 with sealing serrations to connect the powder delivery auxiliary section 144 to the anode body 16 provides for better water and gas barrier, and in particular the provision of multiple serrations provides a multi-layer guarantee for preventing leakage of water and gas from between the sealing serrations. The number of the first sealing saw teeth 146 and the second sealing saw teeth 147 on the longitudinal section of the nozzle 1 is more than or equal to 3, and the actual test shows that the number of the first sealing saw teeth 146 is 4, and the number of the second sealing saw teeth 147 is 3, so that the effect is optimal. Preferably, the outer side of the front end part of the powder feeding auxiliary section 144 is sleeved and fixed with an annular stop block 150, an assembly gap is formed between the front end of the fastener 10 and the annular stop block 150, a second sealing ring 149 is mounted in the assembly gap in a matched manner, and the fastener 10 is sleeved with a first sealing ring 148 at the rear end position of the first sealing saw teeth 146. Referring to fig. 1, a third sealing ring 151 is provided at the connection position of the powder feeding inlet 142 and the outer wall of the nozzle body 12 near the water flow side to isolate the powder and the water flow.
As shown in fig. 1 to 4, a plasma spraying equipment system formed by a spraying nozzle structure further comprises a power supply 2 (the power supply 2 is a direct current power supply), an air supply device 3, a water supply device 4 and a powder supply device 5, wherein the anode of the power supply 2 is electrically connected with an anode body 16, and the cathode of the power supply 2 is electrically connected with a cathode rod 15. The water supply device 4 is in circulating water communication with the water cooling cavity 13 inside the nozzle housing 11. The air outlet end of the air supply device 3 is in airtight communication with the air inlet 125 of the air supply housing 122. The powder outlet end of the powder feeding device 5 is communicated with the powder feeding inlet 142 in a sealing way.
The air feeder 3 enters air from the air inlet 125 and ejects the air from the air nozzle, the powder feeder 5 conveys the sprayed powder to the horn mouth powder feeding channel 141, the air of the air nozzle and the powder in the horn mouth powder feeding channel 141 form plasma jet flow, and the air is ejected from the bell mouth nozzle body 162, and then the spraying purpose is achieved.
In some embodiments, as shown in fig. 5 and 6, the powder feeding device 5 includes a powder storage box 51, a powder feeding tube 52 and a powder feeding device 53, a first end of the powder feeding tube 52 is communicated with the powder storage box 51, a second end of the powder feeding tube 52 is communicated with the powder feeding device 53, a centrifugal fan 54 is mounted on the powder feeding tube 52, and the powder feeding device 53 is connected with the powder feeding inlet 142. The powder feeder 53 includes a powder feeder housing 531, a motor 532, a spiral stirring assembly 533 and a powder feeder channel 534, the powder feeder housing 531 is funnel-shaped, the motor 532 is mounted at the top of the powder feeder housing 531, the spiral stirring assembly 533 is mounted on the rotating shaft of the motor 532, the axis of the spiral stirring assembly 533 coincides with the axis of the powder feeder housing 531, the powder feeder channel 534 is arranged at the bottom of the powder feeder housing 531, and the air vibrator 535 is mounted above the powder feeder channel 534.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. Spray nozzle structure comprising a nozzle (1), characterized in that: the nozzle (1) comprises a nozzle shell (11) and a nozzle main body (12) positioned in the nozzle shell (11), wherein a water cooling cavity (13) is formed between the inner wall of the nozzle shell (11) and the outer wall of the nozzle main body (12); the nozzle main body (12) comprises an air supply shell (122) and a cathode rod (15) positioned in the air supply shell (122), an air supply channel (124) is arranged between the inner wall of the air supply shell (122) and the outer wall of the cathode rod (15), an air inlet (125) communicated with the air supply channel (124) is arranged at the rear end of the air supply shell (122), and an air nozzle is arranged at the front end of the air supply shell (122); install on nozzle housing (11) and send powder subassembly (14), send powder subassembly (14) to be constituteed by sending powder entry (142), send powder main part (143), send supplementary section of powder (144) in proper order, send powder entry (142) to run through nozzle housing (11) and set up, send powder main part (143), send supplementary section of powder (144) to be located inside nozzle housing (11) and be located nozzle main part (12) outside, send powder main part (143) have send powder main channel (145) with send powder entry (142) intercommunication, send supplementary section of powder (144) to have horn mouth send powder channel (141) that correspond with the air nozzle, send to install anode body (16) on supplementary section of powder (144).
2. A spray nozzle structure as claimed in claim 1, wherein: the front end of the nozzle shell (11) is provided with a water inlet (115) communicated with the water cooling cavity (13), and the rear end of the nozzle shell (11) is provided with a water outlet (114) communicated with the water cooling cavity (13).
3. A spray nozzle structure as claimed in claim 2, wherein: an annular insulator (17) is further connected between the inner wall of the nozzle shell (11) and the outer wall of the nozzle main body (12), and a plurality of water flow holes (171) are formed in the annular insulator (17) in a penetrating manner; the annular insulator (17) separates the nozzle housing (11) into a front housing (112) and a rear housing (111).
4. A spray nozzle structure as claimed in claim 1, wherein: the air supply device is characterized in that the inside of the nozzle main body (12) is connected with a cathode mounting seat (123), the cathode rod (15) is fixed on the cathode mounting seat (123), the front end of the cathode rod (15) is provided with a curved surface head (152), and the front end of the air supply shell (122) is provided with a nozzle horn mouth section (121) corresponding to the curved surface head (152).
5. A spray nozzle structure as defined in claim 4, wherein: the horn mouth powder feeding channel (141) is positioned between the outer wall of the nozzle horn mouth section (121) and the inner wall of the powder feeding auxiliary section (144).
6. A spray nozzle structure as claimed in claim 1, wherein: the anode body (16) comprises an anode connecting part (161) and a bell-shaped nozzle body (162), and the anode connecting part (161) is connected to the outer wall of the powder feeding auxiliary section (144) in a sealing manner; the front end of the nozzle shell (11) is provided with a nozzle seat (113), the end of the bell-shaped nozzle body (162) is arranged on the nozzle seat (113), the bell-shaped nozzle body (162) is provided with a bell-shaped nozzle cavity communicated with the horn mouth powder feeding channel (141) and the air nozzle, and the middle part of the nozzle seat (113) is provided with a nozzle opening communicated with the bell-shaped nozzle cavity.
7. A spray nozzle structure as defined in claim 6, wherein: the outer wall of the powder feeding auxiliary section (144) is provided with a fastener (10), and the anode connecting part (161) is detachably arranged on the fastener (10); the outer side wall of the fastener (10) is provided with a first sealing saw tooth (146), and the inner side wall of the anode connecting part (161) is provided with a second sealing saw tooth (147) meshed with the first sealing saw tooth (146).
8. A spray nozzle structure as defined in claim 7, wherein: the powder feeding auxiliary section (144) is characterized in that an annular stop block (150) is fixedly sleeved outside the front end part of the powder feeding auxiliary section, an assembly gap is formed between the front end of the fastener (10) and the annular stop block (150), a second sealing ring (149) is mounted in the assembly gap in a matched mode, and a first sealing ring (148) is sleeved at the rear end position of the first sealing saw tooth (146) of the fastener (10).
9. A plasma spray apparatus system comprising the spray nozzle structure of any one of claims 1 to 8, characterized in that: the cathode of the power supply (2) is electrically connected with the anode body (16), and the anode of the power supply (2) is electrically connected with the cathode rod (15); the water delivery device (4) is communicated with water cooling cavity (13) in the nozzle shell (11) in circulating water; the air outlet end of the air supply device (3) is communicated with the air inlet (125) of the air supply shell (122) in a sealing way; the powder outlet end of the powder feeding device (5) is communicated with the powder feeding inlet (142) in a sealing way.
10. The plasma spray apparatus system as recited in claim 9 wherein: the powder feeding device (5) comprises a powder storage box body (51), a powder feeding pipe (52) and a powder feeder (53), wherein a first end of the powder feeding pipe (52) is communicated with the powder storage box body (51), a second end of the powder feeding pipe (52) is communicated with the powder feeder (53), a centrifugal fan (54) is arranged on the powder feeding pipe (52), and the powder feeder (53) is connected with a powder feeding inlet (142); powder feeder (53) are including powder feeder casing (531), motor (532), spiral stirring subassembly (533) and send powder passageway (534), powder feeder casing (531) are hopper-shaped, and motor (532) are installed at powder feeder casing (531) top, spiral stirring subassembly (533) are installed on the rotation axis of motor (532), spiral stirring subassembly (533) axis with powder feeder casing (531) axis coincidence, powder passageway (534) set up in powder feeder casing (531) bottom, air vibrator (535) are installed to powder feeder passageway (534) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322689927.8U CN220926895U (en) | 2023-10-08 | 2023-10-08 | Spraying nozzle structure and plasma spraying equipment system formed by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322689927.8U CN220926895U (en) | 2023-10-08 | 2023-10-08 | Spraying nozzle structure and plasma spraying equipment system formed by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220926895U true CN220926895U (en) | 2024-05-10 |
Family
ID=90940752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322689927.8U Active CN220926895U (en) | 2023-10-08 | 2023-10-08 | Spraying nozzle structure and plasma spraying equipment system formed by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220926895U (en) |
-
2023
- 2023-10-08 CN CN202322689927.8U patent/CN220926895U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI90738B (en) | Supersonic heat spray gun and coating procedure | |
| US6986471B1 (en) | Rotary plasma spray method and apparatus for applying a coating utilizing particle kinetics | |
| US10576484B2 (en) | Axial feed plasma spraying device | |
| EP2236211A1 (en) | Plasma transfer wire arc thermal spray system | |
| JPH04227879A (en) | Powder external feed type plasma spray device | |
| CN104902666B (en) | A kind of pair of air-flow supersonic plasma spray gun | |
| CN104498862B (en) | High-speed gas-electric arc composite thermal spraying method and spray gun used in same | |
| CN107983965B (en) | Preparation method and equipment for high-temperature plasma gas atomization superfine spherical metal powder | |
| CN101954324B (en) | Plasma spray gun used for low-pressure plasma spraying | |
| CN110302909A (en) | A kind of high-power hot cathode supersonic plasma spray rifle | |
| CN220926895U (en) | Spraying nozzle structure and plasma spraying equipment system formed by same | |
| CN1169410C (en) | Plasma spraying gun | |
| CN204168580U (en) | There is the negative electrode of spiral stream guidance structure | |
| CN216378348U (en) | Thermal spraying equipment | |
| CN207659515U (en) | A kind of refractory ceramics spray equipment | |
| RU96119941A (en) | DEVICE FOR MELTING SMALL CARBON-CONTAINING PARTICLES AND METHOD FOR MELTING SUCH FINE PARTICLES USING THIS DEVICE | |
| CN204039481U (en) | The plasma spray gun of nano coating screw rod | |
| CN2411260Y (en) | Low-power high-efficiency plasma spraying device | |
| CN109868160A (en) | Plasma nozzle, gasification furnace and gasification process for coal water slurry gasification | |
| CN210357638U (en) | Cold spray gun for spraying silver layer | |
| CN109695013A (en) | A kind of transferred arc supersonic speed plasma wire spray equipment | |
| CN1108992A (en) | Temperature adjustable plastics gas-flow sprayer | |
| KR100323494B1 (en) | A plasma gun device for the injection of strengthening-powder | |
| CN115679240B (en) | High-energy plasma spray gun device and method for in-situ atomizing metal or ceramic powder | |
| CN206782835U (en) | A kind of device that solid powder is sent into high velocity air |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |