CN103170416B - A kind of static nozzle and using method thereof - Google Patents
A kind of static nozzle and using method thereof Download PDFInfo
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- CN103170416B CN103170416B CN201310131847.9A CN201310131847A CN103170416B CN 103170416 B CN103170416 B CN 103170416B CN 201310131847 A CN201310131847 A CN 201310131847A CN 103170416 B CN103170416 B CN 103170416B
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- electrostatic spray
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003068 static effect Effects 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 92
- 239000004020 conductor Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 229920000954 Polyglycolide Polymers 0.000 description 7
- 239000002105 nanoparticle Substances 0.000 description 7
- 239000004633 polyglycolic acid Substances 0.000 description 7
- 238000007590 electrostatic spraying Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 229930012538 Paclitaxel Natural products 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229960001592 paclitaxel Drugs 0.000 description 3
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 3
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 3
- KLWPJMFMVPTNCC-UHFFFAOYSA-N Camptothecin Natural products CCC1(O)C(=O)OCC2=C1C=C3C4Nc5ccccc5C=C4CN3C2=O KLWPJMFMVPTNCC-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- VSJKWCGYPAHWDS-FQEVSTJZSA-N camptothecin Chemical compound C1=CC=C2C=C(CN3C4=CC5=C(C3=O)COC(=O)[C@]5(O)CC)C4=NC2=C1 VSJKWCGYPAHWDS-FQEVSTJZSA-N 0.000 description 2
- 229940127093 camptothecin Drugs 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- VSJKWCGYPAHWDS-UHFFFAOYSA-N dl-camptothecin Natural products C1=CC=C2C=C(CN3C4=CC5=C(C3=O)COC(=O)C5(O)CC)C4=NC2=C1 VSJKWCGYPAHWDS-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002103 nanocoating Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229940043267 rhodamine b Drugs 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000048 melt cooling Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
The invention discloses a kind of static nozzle and using method thereof, comprise nozzle body, cap of spraying nozzle and nozzle control governor gear, described nozzle body front end is provided with nozzle, described nozzle body is provided with nozzle chamber vertically, described nozzle body is provided with the liquid inlet that to communicate with described nozzle chamber, described nozzle control governor gear is connected to the rear end of described nozzle body, described nozzle control governor gear is fixed with nozzle needle, one end of described nozzle needle is passed described nozzle chamber and stretches out outside described nozzle, described cap of spraying nozzle is enclosed within the front end of described nozzle body, described cap of spraying nozzle is provided with cap of spraying nozzle inner chamber vertically, static nozzle is also provided with the air flow inlet communicated with described cap of spraying nozzle inner chamber.Static nozzle provided by the invention and using method thereof substantially increase has the particle of micron or nanoscale or the manufacturing speed of coating, improves operating efficiency.
Description
Technical Field
The invention belongs to the field of preparing micron, nano particles and coatings by electrostatic spraying, and particularly relates to an electrostatic spray head for preparing micron particles, nano particles and coatings thereof and a using method thereof.
Background
Electrostatic spraying is that small molecules or high molecular solution or solution passes through a capillary tube which is applied with certain voltage, when the charge repulsion force on the surface of liquid drops exceeds the surface tension, micro liquid can be ejected at high speed on the surface of the liquid, the jet flow is continuously stretched under the action of electrostatic force, when the solution has enough entangled molecular chains to be oriented along the axial direction of the jet flow, the stretching of electric field force can be balanced, the continuity of the jet flow is kept, and fibers are formed, and the process is also called electrostatic spinning; otherwise the jet breaks down to form micron or nanometer sized particles, a process known as electrostatic atomization or electrospray.
The electrostatic spraying device mainly comprises a high-voltage generating device, a solution supplying device, a spraying device and a collecting device. The principle is that a static electric field is established between the jet liquid and the receiving device in the high-voltage generator, and when the intensity of the static electric field exceeds a critical value, the polymer solution or melt overcomes the surface tension thereof under the action of the electric field force to form a charged jet flow at the spinneret orifice. The charged stream is bent or whiped at a high speed due to electrostatic repulsion, and is cooled to obtain particles or fibers with diameters ranging from tens of nanometers to several micrometers along with solvent volatilization or melt cooling, and finally falls on a collecting device to form a compact particle cluster or fiber membrane material.
The electrostatic spraying technology can be used for preparing fibers with uniform thickness or particles with uniform particle size. The method has great advantages that the method can directly obtain particles with uniform particle size without an emulsifier on the preparation of micron or nanometer sized particles. However, the biggest limitation is in the preparation speed, the typical capillary tube is used as the spray head, the liquid supply speed is required to be consistent with the speed of the liquid flying to the corresponding electrode overcoming the surface tension, and the typical speed is dozens of microliters to a plurality of milliliters per hour, so that the application of the capillary tube in industrial production is greatly limited.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is to provide an electrostatic nozzle, which greatly improves the manufacturing efficiency of the micro-particles, the nano-particles and the coating thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides an electrostatic spray head, its characterized in that, includes shower nozzle main part, nozzle cap and nozzle adjusting device, shower nozzle main part front end is equipped with the nozzle be equipped with the nozzle inner chamber along the axial in the shower nozzle main part be equipped with in the shower nozzle main part with the communicating liquid entry of nozzle inner chamber, nozzle adjusting device connects the rear end of shower nozzle main part be fixed with the spray needle on the nozzle adjusting device, the one end of spray needle is passed the nozzle cavity stretches out outside the nozzle, the nozzle cap cover is in the front end of shower nozzle main part be equipped with nozzle cap inner chamber along the axial on the nozzle cap, still be equipped with on electrostatic spray head with the communicating air current entry of nozzle cap inner chamber.
Preferably, the spray needle is a conductor with a tip at one end, and the needle body axis of the spray needle is coaxial with the central line of the nozzle.
Preferably, a central threaded hole is formed in the nozzle body, an external thread is formed in the nozzle adjusting device, the nozzle adjusting device is arranged in the central threaded hole, and the nozzle adjusting device controls the length of the spray needle extending out of the nozzle to adjust the gap between the spray needle and the nozzle.
Preferably, the head main body, the nozzle cap and the nozzle adjusting means are made of an insulating material.
Preferably, the gas flow inlet is provided on the nozzle cap.
Preferably, the air flow inlet is provided on the head body.
The other technical scheme provided by the scheme is as follows:
a method for using the electrostatic spray head comprises the following steps:
S1fixing the electrostatic spray head at a specified position, and adjusting the distance between the electrostatic spray head and a receiving device or a spraying workpiece;
S2turning on a high-voltage power supply, and adjusting the power supply voltage to a preset value;
S3opening a gas pipeline, and adjusting the gas pressure, the gas flow and the gas temperature to preset values;
S4and opening the liquid supply system to adjust the liquid flow to a preset value.
Preferably, the receiving device is a receiving plate formed by conductors or a container containing liquid.
Compared with the prior art, the electrostatic sprayer provided by the invention has the advantages that the charged liquid is crushed by adopting the gas to form the charged liquid drops, the charged liquid drops are subjected to secondary crushing under the action of charge repulsion after leaving the nozzle, so that particles with smaller and more uniform particle sizes can be obtained, meanwhile, the supply speed of the liquid is mainly limited to the atomization effect of the gas flow on the liquid drops and the guarantee of proper charge on the liquid drops after the charged liquid drops are separated from the nozzle due to the secondary crushing, the typical liquid supply speed is a plurality of milliliters per minute, so that the preparation speed of micron and nanometer scale particles and the preparation speed of coatings are greatly improved, and the working efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electrostatic showerhead according to a first embodiment of the invention;
FIG. 2 is a schematic structural diagram of an electrostatic showerhead according to a second embodiment of the present invention;
fig. 3 is a working principle diagram of the present invention.
Wherein,
1. a nozzle body; 2. a nozzle cap; 3. a nozzle adjustment device; 4. a nozzle;
5. a nozzle cavity; 6. a liquid inlet; 7. a nozzle cap cavity; 8. an airflow inlet;
9. spraying needles; 10. a central threaded hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides an electrostatic spray head, which includes a spray head main body 1, a spray nozzle 4 is disposed on the spray head main body 1, a spray nozzle cavity 5 is disposed on the spray head main body 1 along an axial direction of the spray head main body 1, a liquid inlet 6 is further disposed on the spray head main body 1, and the liquid inlet 6 is communicated with the spray nozzle cavity 5. The front end of the sprayer main body 1 is sleeved with the nozzle cap 2, the nozzle cap 2 is provided with the nozzle cap cavity 7 along the axial direction of the nozzle cap 2, the nozzle cap 2 is further provided with the airflow inlet 8, the airflow inlet 8 is communicated with the nozzle cap cavity 7, when the nozzle cap 2 is sleeved on the sprayer main body 1, the nozzle 4 is arranged in the nozzle cap cavity 7, and the center line of the nozzle 4 is coaxial with the center line of the nozzle cap cavity 7. The rear end of the spray head main body 1 is connected with a nozzle adjusting device 3, the nozzle adjusting device 3 is provided with an external thread, the nozzle adjusting device 3 is arranged in a central threaded hole 10 on the spray head main body 1, a spray needle 9 is fixed on the nozzle adjusting device 3, the spray needle 9 is a conductor with a tip at one end, one end of the spray needle 9 with the tip penetrates through the nozzle cavity 5 and extends out of the nozzle 4, the needle body axis of the spray needle 9 is coaxial with the central line of the nozzle 4, the outlet of the nozzle cavity 5 is conical, the length of the spray needle 9 extending out of the nozzle 4 is longer, the gap between the nozzle cavity 5 and the spray needle 9 at the outlet of the nozzle cavity 5 is smaller, and the length of the spray needle 9 extending out of the nozzle 4 is realized through the nozzle adjusting device 3. Because a higher voltage is needed during operation, a larger leakage current exists, and in order to avoid the damage of the leakage current to people and equipment, the spray head main body 1, the nozzle cap 2 and the nozzle adjusting device 3 are made of insulating materials, preferably tetrafluoroethylene and polyetheretherketone.
Example two:
as shown in fig. 2, the present invention provides an electrostatic spray head, which includes a spray head main body 1, a spray nozzle 4 is disposed on the spray head main body 1, a spray nozzle cavity 5 is disposed on the spray head main body 1 along an axial direction of the spray head main body 1, a liquid inlet 6 is further disposed on the spray head main body 1, the liquid inlet 6 is communicated with the spray nozzle cavity 5, and an airflow inlet 8 is further disposed on the spray head main body 1. The front end of the sprayer main body 1 is sleeved with the nozzle cap 2, the nozzle cap 2 is provided with the nozzle cap cavity 7 along the axial direction of the nozzle cap 2, the airflow inlet 8 is communicated with the nozzle cap cavity 7, when the nozzle cap 2 is sleeved on the sprayer main body 1, the nozzle 4 is arranged in the nozzle cap cavity 7, and the central line of the nozzle 4 is coaxial with the central line of the nozzle cap cavity 7. The rear end of the spray head main body 1 is connected with a nozzle adjusting device 3, the nozzle adjusting device 3 is provided with an external thread, the nozzle adjusting device 3 is arranged in a central threaded hole 10 on the spray head main body 1, a spray needle 9 is fixed on the nozzle adjusting device 3, the spray needle 9 is a conductor with a tip at one end, one end of the spray needle 9 with the tip penetrates through the nozzle cavity 5 and extends out of the nozzle 4, the needle body axis of the spray needle 9 is coaxial with the central line of the nozzle 4, the outlet of the nozzle cavity 5 is conical, the length of the spray needle 9 extending out of the nozzle 4 is longer, the gap between the nozzle cavity 5 and the spray needle 9 at the outlet of the nozzle cavity 5 is smaller, and the length of the spray needle 9 extending out of the nozzle 4 is realized through the nozzle adjusting device 3. Because a higher voltage is needed during operation, a larger leakage current exists, and in order to avoid the damage of the leakage current to people and equipment, the spray head main body 1, the nozzle cap 2 and the nozzle adjusting device 3 are made of insulating materials, preferably tetrafluoroethylene and polyetheretherketone.
The working principle of the invention is as follows: as shown in fig. 2, when the electrostatic spraying head works, a predetermined voltage is applied to the spray needle to make the liquid carry enough charges, the charged liquid flows out from the gap between the spray nozzle and the spray needle under the propulsion of the pump, meets the air flow flowing out from the space between the spray nozzle cap and the spray nozzle at a high speed, forms charged fog-like liquid drops under the impact of the air flow, the volume of the fog-like liquid drops is smaller and smaller along with the volatilization of the solvent, the charge density is larger and larger, when the charge density of the liquid drops reaches a certain degree, the charge repulsion force is larger than the surface tension of the liquid drops, and the liquid drops are broken into a plurality of new tiny liquid drops until the charge repulsion force and the surface tension on the surface of the. Meanwhile, the broken liquid drops move towards the workpiece or the receiving device which is grounded or connected with the opposite electrode under the action of the airflow and the electric charge force, if the solvent is not completely volatilized, namely the solvent reaches the surface of the workpiece, the effect of spraying the workpiece can be obtained, and if the solvent is completely volatilized before reaching the receiving device, nano or micron-sized particles can be obtained. The collecting device can adopt a receiving plate consisting of a simple conductor, so that dry powdery particles can be received; a collection container containing a suitable liquid may also be employed so that the ejected particles are directly dispersed in the collection liquid, avoiding aggregation of the particles.
The invention also provides a using method of the electrostatic spray head, which comprises the following steps:
S1fixing the electrostatic spray head at a specified position, and adjusting the distance between the electrostatic spray head and a receiving device or a spraying workpiece;
S2turning on a high-voltage power supply, and adjusting the power supply voltage to a preset value;
S3opening a gas pipeline, and adjusting the gas pressure, the gas flow and the gas temperature to preset values;
S4and opening the liquid supply system to adjust the liquid flow to a preset value.
Wherein S is1The receiving device can be various according to different prepared particles, such as a receiving plate made of a conductor or a collecting container containing liquid.
The method of using the electrostatic head will be described below by way of specific tests.
1. Preparing the nano particles wrapping rhodamine B polylactic acid-polyglycolic acid:
the spray head is fixed on an insulated tetrafluoroethylene rod, the spray direction of the spray head is downward, an aluminum collecting disc is placed 30cm below the spray head, and the disc is reliably grounded. The high-voltage power supply adopts a negative high-voltage power supply. 5mg of rhodamine B and 0.5g of polylactic acid-polyglycolic acid (75: 25) having a molecular weight of 1 ten thousand were dissolved in 9.5g of acetonitrile, and the solution was used after completion of the dissolution. After the relevant high-voltage circuit, the gas pipeline and the liquid pipeline are connected, the high-voltage power supply is started, the power supply is adjusted to 50KV, the gas pressure of the gas pipeline is adjusted to 20kpa, the gas temperature is room temperature, and the liquid flow is 1.35 ml/min. And collecting disc powder after spraying to obtain the rhodamine-coated polylactic acid-polyglycolic acid nanoparticles.
2. Preparing nano particles of polylactic acid-polyglycolic acid wrapping camptothecin:
the spray head is fixed on an insulated tetrafluoroethylene rod, the spray direction of the spray head is downward, a stainless steel collecting disc is placed at the position 40cm below the spray head, the disc is filled with ethanol to be used as collecting liquid, and the collecting disc is reliably grounded. The high-voltage power supply adopts a negative high-voltage power supply. 50mg of camptothecin and 1g of polylactic acid-polyglycolic acid (75: 25) with a molecular weight of 2 ten thousand were dissolved in 9g of dimethylformamide and used after completion of the dissolution. After the relevant high-voltage circuit, the gas pipeline and the liquid pipeline are connected, the high-voltage power supply is started, the power supply is adjusted to 80KV, the gas pressure of the gas pipeline is adjusted to 20kpa, the gas temperature is room temperature, and the liquid flow is 0.45 ml/min. The sprayed particles are collected by the ethanol collecting liquid, and the particles are uniformly distributed in the ethanol. Adding appropriate amount of water into ethanol solution with dispersed particles, distilling most ethanol under reduced pressure to obtain nanoparticles dispersed in water solution, and lyophilizing to obtain the final product.
3. Preparing a paclitaxel drug eluting stent:
the spray head is fixed on an insulated tetrafluoroethylene rod, the spray direction of the spray head is downward, a metal bare support is placed at a position 10cm below the spray head, and the spray head is reliably grounded. The high-voltage power supply adopts a negative high-voltage power supply. 6mg of paclitaxel and 0.1g of polylactic acid-polyglycolic acid (75: 25) having a molecular weight of 2 ten thousand were dissolved in 3g of chloroform, and the solution was used. After the relevant high-voltage circuit, the gas pipeline and the liquid pipeline are connected, the high-voltage power supply is started, the power supply is adjusted to 30KV, the gas pressure of the gas pipeline is adjusted to 5kpa, the gas temperature is room temperature, and the liquid flow is 0.45 ml/min. The sprayed liquid drops reach the surface of the metal stent after not being completely dried, the spraying time is controlled well, and the stent is rotated properly, so that the drug-coated stent of the polylactic acid-polyglycolic acid polymer containing the paclitaxel can be obtained.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides an electrostatic spray head for preparation micron particle or nanometer particle, its characterized in that, includes shower nozzle main part, nozzle cap and nozzle adjusting device, shower nozzle main part front end is equipped with the nozzle be equipped with the nozzle inner chamber along the axial in the shower nozzle main part be equipped with in the shower nozzle main part with the communicating liquid entry of nozzle inner chamber, nozzle adjusting device connects the rear end of shower nozzle main part be fixed with the spray needle on the nozzle adjusting device, the one end of spray needle is passed the nozzle inner chamber and is stretched out outside the nozzle, the nozzle cap cover is in the front end of shower nozzle main part be equipped with nozzle cap inner chamber along the axial on the nozzle cap, still be equipped with on electrostatic spray head with the communicating air inlet of nozzle cap inner chamber.
2. The electrostatic spray head of claim 1, wherein the needle is a conductor having a pointed end at one end, and a needle axis of the needle is coaxial with a centerline of the nozzle.
3. The electrostatic spray head of claim 2, wherein the spray head body is provided with a central threaded hole, the nozzle adjusting device is provided with an external thread, the nozzle adjusting device is arranged in the central threaded hole, and the nozzle adjusting device controls the length of the spray needle extending out of the spray nozzle to adjust the gap between the spray needle and the spray nozzle.
4. The electrostatic spray head of claim 3, wherein the spray head body, the nozzle cap and the nozzle adjustment device are made of an insulating material.
5. The electrostatic spray head of claim 4, wherein the gas flow inlet is provided on the nozzle cap.
6. The electrostatic spray head of claim 4, wherein the gas flow inlet is provided on the spray head body.
7. A method of using an electrostatic spray head according to any of claims 1 to 6, comprising the steps of:
s1, fixing the electrostatic spray head at a specified position, and adjusting the distance between the electrostatic spray head and a receiving device or a spraying workpiece;
s2, starting a high-voltage power supply, and adjusting the power supply voltage to a preset value;
s3, opening a gas pipeline, and adjusting the gas pressure, the gas flow and the gas temperature to preset values;
and S4, starting the liquid supply system and adjusting the flow rate of the spraying liquid to a preset value.
8. Use according to claim 7, wherein the receiving means is a receiving plate of a conductor or a container containing a collection liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310131847.9A CN103170416B (en) | 2013-04-16 | 2013-04-16 | A kind of static nozzle and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310131847.9A CN103170416B (en) | 2013-04-16 | 2013-04-16 | A kind of static nozzle and using method thereof |
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| CN103170416A CN103170416A (en) | 2013-06-26 |
| CN103170416B true CN103170416B (en) | 2016-02-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007237089A (en) * | 2006-03-09 | 2007-09-20 | Anest Iwata Corp | Spray gun for powder electrostatic coating |
| JP2009095750A (en) * | 2007-10-16 | 2009-05-07 | Jtekt Corp | Spray gun |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803367A (en) * | 1994-02-18 | 1998-09-08 | Itw Limited | Spray gun |
| CN2717531Y (en) * | 2004-07-31 | 2005-08-17 | 罗南东 | Electrostatic powder spraying pistol outlet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12090506B2 (en) | 2020-07-14 | 2024-09-17 | Techtronic Cordless Gp | Powered sprayer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103170416A (en) | 2013-06-26 |
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