CN2317008Y - Pulsed high voltage electrostatic spraying power supply - Google Patents
Pulsed high voltage electrostatic spraying power supply Download PDFInfo
- Publication number
- CN2317008Y CN2317008Y CN 97249649 CN97249649U CN2317008Y CN 2317008 Y CN2317008 Y CN 2317008Y CN 97249649 CN97249649 CN 97249649 CN 97249649 U CN97249649 U CN 97249649U CN 2317008 Y CN2317008 Y CN 2317008Y
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- CN
- China
- Prior art keywords
- pulse
- circuit
- frequency
- resistance
- high voltage
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a high voltage electrostatic spraying power supply for powder spraying devices. The high voltage electrostatic power supply of the utility model is composed of a power supply circuit, a pulse generating circuit, a power amplification circuit, etc.; the high frequency pulse circuit is composed of a resistor, a diode, a capacitor and an amplification circuit integrated block NE555 to generate high frequency pulses; a low frequency pulse circuit can change the frequency of the adjustable low-frequency pulse of the capacitor; an adjustable potentiometer can change the pulse duty ratio. The utility model has a DC high voltage working mode and a pulse high voltage working mode and has the advantages of large power and good spraying effect; the quality of products is improved.
Description
The utility model is to be used for the high-voltage electrostatic power that powder spray coating device uses.
High-voltage electrostatic power is the key equipment of powder spraying.Powdery paints only under the effect of high voltage electric field could with on negative electrical charge be injected into and be connected to anodal surface of the work, the performance of electrical equipment directly influences the effect of powder spraying.Because high-voltage electrostatic power, the high pressure that produces is a high direct voltage, the electric field that produces in the spraying process is a relatively stable indeclinable high voltage electric field, in the electrostatic spray process, owing to differed by spraying workpiece shape, (general 50kv or higher) surface of the work electric potential gradient does not wait under the high voltage electric field effect, and charged ability is also different, it is strong that the powder ability is caught at the high position of current potential, and the low zone of current potential is the attaching powder ability then.Because the electric field that high direct voltage produces is a relatively stable indeclinable electric field, pretends the surface of the work that is used for this electric field, formed electric potential gradient can not change, and complex-shaped spraying will cause the adverse consequences of its surface spraying became uneven.Go up the powder difficulty as Baltimore groove surface Shen Dong, position, corner etc., the regional regular meeting of some between some position of some workpiece or the workpiece of suspension produces the Coulomb repulsion phenomenon, forms the spraying dead band.
The purpose of this utility model provides the pulsed high pressure electrostatic painting voltage that a kind of generation can change high voltage electric field, so that by spray piece in the electric field that changes, working surface to complex geometry, high potential can be to the part charging of electronegative potential wink, improve effectively by the whole charged ability in spray part surface, make the even strong adhesion of coating.
The utility model is realized as follows, accompanying drawing is the electrical schematic diagram of pulsed high pressure electrostatic painting power supply, and it partly is made of power circuit, high-frequency impulse generation circuit, low-frequency pulse generation circuit, mixed modulated and amplifying circuit, power amplification and voltage lifting circuit, high-pressure generating circuit etc.[B1] is power transformer among the figure, and input voltage AC220V is output as AC5V, 16V, 35V.AC16V is through rectifying and wave-filtering, and 7815 device voltage stabilizing impulse circuits use; AC35V voltage provides power supply through the Tz pressure regulator for power amplifier.High-voltage pulse circuit is by resistance [R1, R2, R3], diode [D1, D2], electric capacity [C1] and amplifying circuit integrated package NE555[1C1] form, produce the HF square-wave oscillating impulse.Frequency is by resistance [R1, R2] and the decision of electric capacity [C1] value, and [R1, R2] is non-equivalence resistance, and the back level power amplifier that is chosen as of its pulse duty factor has improved gain.Low-frequency pulse generation circuit is by resistance [R4, R5, R8] and potentiometer [W], diode [D3, D4], electric capacity [C2-6] and amplifying circuit integrated package NE555[IC2] form, produce the square wave low-frequency pulse, change capacitor C 2, C3 to C6 can obtain the low-frequency pulse of different frequency, change the resistance of potentiometer [W], can change its pulse duty factor.Pulse amplifying circuit is made up of resistance [R6, R7, R10, R11], diode [D5, D7, D8] and electric capacity [C7], pulse transformer B2, triode [BG1, BG2].[BG1, BG2] forms the multiple tube form, and pulse transformer B2 delivers to power amplifier with amplifying signal step-down up-flow, also plays the circuit buffer action, and diode [D8] will be imported the peak clutter filtering of power amplifier.Resistance [R9], diode [D6], triode [BG3] and switch [K] are formed mixting circuit.Switch [K] disconnects, low frequency signal through BG3 amplify and with the high-frequency signal mixing.Modulated high-frequency impulse amplifies through BG1, BG2, and pulse transformer, circuit promote back input power tube BG4, form complete machine high-voltage pulse working method.With K switch ground connection, low-frequency pulse bypass complete machine is output as the high direct voltage working method.After the amplifying circuit that power amplification and voltage lifting circuit are made up of through triode BG4, capacitor C 8, diode D9 and the former limit of high-tension transformer B3 the pulse signal of pulse transformer B2 output amplifies, promote high-tension transformer B3 and boost.Regulate the magnitude of voltage of pressure regulator T2, can change the complete machine voltage output value.Electric capacity [C8], resistance [R12] and diode [D9] are formed absorption circuit, and triode [BG4] is in the switching regulator duty, and the suitable selection of pulse duty factor has improved the power tube durability in addition, and complete machine voltage power output.High-pressure generating circuit is made for the high voltage block parts after the embedding of use epoxy resin, and is furnished with single rifle or rush-harvesting and rush-planting jack by set of devices tenfold voltage rectifiers such as high-voltage capacitance, high voltage silicon rectifier stack and current-limiting protection resistance.
When adopting the DC operation mode, the high-frequency impulse of B3 output is behind voltage multiplying rectifier, and high voltage block is exported negative direct current high voltage.When adopting pulse mode work, form the negative high voltage pulse behind the mixed modulated pulse voltage multiplying rectifier of high-tension transformer B3 output.
Pulsed high pressure electrostatic painting power supply described in the utility model has high direct voltage and two kinds of working methods of high voltage pulse, both can solve complex-shaped Workpiece painting quality, improved operating efficiency again, and power is big, spraying effect is good, has improved the quality of product.
Claims (1)
- Pulsed high pressure electrostatic painting power supply, it is by power circuit, high-frequency impulse, low-frequency pulse, mixed modulated and amplification, circuit such as power amplification and the generation of voltage lifting high pressure are formed, it is characterized in that high-frequency electrical pulses routing resistance [R1, R2, R3], diode [D1, D2], electric capacity [C1] and amplifying circuit integrated package NE555[IC1] form, produce the HF square-wave oscillating impulse, frequency is by non-equivalence resistance [R1, R2] and the decision of electric capacity [C1] value, low-frequency pulse generation circuit is by resistance [R4, R5, R8] and potentiometer [W], diode [D3, D4], electric capacity [C2-6] and amplifying circuit integrated package NE555[IC2] form, produce the square wave low-frequency pulse frequency by changing electric capacity [C2-6] decision, dutycycle is by the resistance decision that changes potentiometer [W], pulse amplifying circuit is by resistance [R6, R7, R10, R11], diode [D5, D7, D8] and electric capacity [C7], pulse transformer [B2], triode [BG1, BG2] composition multiple tube form, resistance [R9], diode [D6], triode [BG3] and switch [K] are formed mixting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249649 CN2317008Y (en) | 1997-11-26 | 1997-11-26 | Pulsed high voltage electrostatic spraying power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249649 CN2317008Y (en) | 1997-11-26 | 1997-11-26 | Pulsed high voltage electrostatic spraying power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317008Y true CN2317008Y (en) | 1999-05-05 |
Family
ID=33956504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97249649 Expired - Fee Related CN2317008Y (en) | 1997-11-26 | 1997-11-26 | Pulsed high voltage electrostatic spraying power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317008Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464872C (en) * | 2003-08-08 | 2009-03-04 | 夏普株式会社 | Electrostatic suction type fluid discharge device, electrostatic suction type fluid discharge method, and plot pattern formation method using the same |
| CN101878070B (en) * | 2007-11-30 | 2012-11-21 | Abb株式会社 | Taic coating device |
| CN105673264A (en) * | 2016-03-23 | 2016-06-15 | 深圳市独尊科技开发有限公司 | Water power device and implementation method |
-
1997
- 1997-11-26 CN CN 97249649 patent/CN2317008Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464872C (en) * | 2003-08-08 | 2009-03-04 | 夏普株式会社 | Electrostatic suction type fluid discharge device, electrostatic suction type fluid discharge method, and plot pattern formation method using the same |
| CN101878070B (en) * | 2007-11-30 | 2012-11-21 | Abb株式会社 | Taic coating device |
| CN105673264A (en) * | 2016-03-23 | 2016-06-15 | 深圳市独尊科技开发有限公司 | Water power device and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |