CN208657147U - Powder electrostatic arrester - Google Patents
Powder electrostatic arrester Download PDFInfo
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- CN208657147U CN208657147U CN201821167372.3U CN201821167372U CN208657147U CN 208657147 U CN208657147 U CN 208657147U CN 201821167372 U CN201821167372 U CN 201821167372U CN 208657147 U CN208657147 U CN 208657147U
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Abstract
The utility model provides a kind of powder electrostatic arrester, and the powder electrostatic arrester includes a delivery pipe, a control grid, several ionic wind nozzles, several electric discharge prongs and a high-voltage power module；Wherein, the delivery pipe radially offers several mounting holes；The control grid is set on the inner wall of the delivery pipe and surrounds several mounting holes；One ionic wind nozzle is installed, and the cavity of the ionic wind nozzle is communicated with the lumen of the delivery pipe in each mounting hole；An electric discharge prong is placed in the cavity of each ionic wind nozzle；The high-voltage power module is connect with any electric discharge prong.Control grid is introduced in powder electrostatic arrester, and control grid is disposed in proximity to the position of ionic wind nozzle, so that control grid can delicately adjust ion output, go to neutralize charged powder with appropriate ionic weight, to effectively control the electric eliminating efficiency of charged powder.
Description
Technical field
The utility model relates to static elimination technical field, in particular to a kind of powder electrostatic arrester.
Background technique
Pipeline powder medium is widely used industrial process and production technology.The medium class powder of high resistivity
It highly electrifies in transmission process, has caused fire caused by many powders static discharge itself, explosion accident.
Currently, domestic and international existing Xelminator, seldom is suitable for eliminating the Xelminator of powder.And it is few in number
Existing powder electrostatic arrester, the same with other all Xelminators, existing greatest problem is that electric eliminating efficiency can not rely on
Traditional structural design is controlled.But since powder type and conveying process conditions are different, electrostatic electrification degree thousand poor ten thousand
Not, conventional electrode configurations (that is: the discharge electrode of high voltage supply, grounding electrode) are unable to control the difficult point of electric eliminating efficiency, Cheng Liaoqi
The roadblock of further genralrlization application.
For deficiency existing for powder electrostatic arrester in the prior art, those skilled in the art always search for solution
Method.
Utility model content
The purpose of this utility model is to provide a kind of powder electrostatic arresters, quiet using powder in the prior art to solve
The uncontrollable problem of electric eliminating efficiency of electric arrester.
In order to solve the above technical problems, the utility model provides a kind of powder electrostatic arrester, the powder electrostatic is eliminated
Device includes: a delivery pipe, a control grid, several ionic wind nozzles, several electric discharge prongs and a high-voltage power module；Wherein, institute
It states delivery pipe and radially offers several mounting holes；The control grid is set on the inner wall of the delivery pipe and described in surrounding
Several mounting holes；One ionic wind nozzle, and the pipe of the cavity of the ionic wind nozzle and the delivery pipe are installed in each mounting hole
Chamber communicates；An electric discharge prong is placed in the cavity of each ionic wind nozzle；The high-voltage power module and any electric discharge prong connect
It connects.
Optionally, in the powder electrostatic arrester, the polarity of voltage of the control grid and the band of charged powder
Electric polarity is consistent.
Optionally, in the powder electrostatic arrester, it is described control grid range of voltage values be ± 2kV~±
3kV。
Optionally, in the powder electrostatic arrester, the control gate extremely metal foil.
Optionally, in the powder electrostatic arrester, several mounting holes are between circumferential direction of the delivery pipe etc.
Every distribution.
Optionally, in the powder electrostatic arrester, the high-voltage power module includes: single-pole double-throw switch (SPDT), DC
Type high voltage power supply and AC type high voltage power supply, the moved end selective connection DC type high voltage power supply or AC type of the single-pole double-throw switch (SPDT) are high
Voltage source, the non-moving end of the single-pole double-throw switch (SPDT) are connect with an electric discharge prong.
Optionally, in the powder electrostatic arrester, the DC type high voltage power supply is that the direct current that output is ± 5kV is high
Voltage source；The DC type high voltage power supply is the ac high voltage source that output is 50Hz, 7kV.
Optionally, in the powder electrostatic arrester, the caliber of the delivery pipe is less than powder material warehouse feed pipe
Diameter；The long range of needle of each electric discharge prong is 10mm~50mm；Needle diameter range is 1.0mm~1.1mm；Needle point range of taper
It is 0 °~60 °.
In powder electrostatic arrester provided by the utility model, the powder electrostatic arrester include a delivery pipe,
One control grid, several ionic wind nozzles, several electric discharge prongs and a high-voltage power module；Wherein, the delivery pipe is radially opened
Equipped with several mounting holes；The control grid is set on the inner wall of the delivery pipe and surrounds several mounting holes；Each
One ionic wind nozzle is installed, and the cavity of the ionic wind nozzle is communicated with the lumen of the delivery pipe in mounting hole；Each ion
An electric discharge prong is placed in the cavity of tuyere；The high-voltage power module is connect with any electric discharge prong.Disappear in powder electrostatic
Grid is controlled except introducing in device, and control grid is disposed in proximity to the position of ionic wind nozzle, so that control grid can be delicately
Ion output is adjusted, goes to neutralize charged powder with appropriate ionic weight, to effectively control the electric eliminating efficiency of charged powder.
On the other hand, set consistent with the electrification polarity of charged powder for the polarity for controlling grid, identical charges repel each other, significantly
The viscous wall rate for reducing powder effectively prevents the mode of propagation brush discharge phenomenon that thus evil is given birth in powder material warehouse, improves electrostatic
Safety.
Detailed description of the invention
Fig. 1 is the agent structure schematic diagram of powder electrostatic arrester in an embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section of powder electrostatic arrester in part in an embodiment of the present invention；
Fig. 3 is the flow chart of the application method of powder electrostatic arrester in an embodiment of the present invention；
Fig. 4 is the test of the high voltage power supply progress ionic current test using DC type high voltage power supply as powder electrostatic arrester
Result figure；
Fig. 5 is the test of the high voltage power supply progress ionic current test using AC type high voltage power supply as powder electrostatic arrester
Result figure.
In Fig. 1 and Fig. 2:
1- delivery pipe；10- mounting hole；2- controls grid；3- ionic wind nozzle；4- electric discharge prong；5- high-voltage power module；6-
Stick metallic test electrode；Vg- grid-control voltage terminal；The high-voltage output end of Vd-DC type high voltage power supply.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes powder electrostatic arrester make further it is detailed
Explanation.According to following explanation and claims, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing
It is all made of very simplified form and uses non-accurate ratio, only to facilitate, lucidly aid in illustrating the utility model
The purpose of embodiment.
Referring to FIG. 1, its structural schematic diagram for the powder electrostatic arrester of the utility model.As shown in Figure 1, the powder
Body Xelminator includes: a delivery pipe 1, one control grid 2, several ionic wind nozzles 3, several electric discharge prongs 4 and a high-voltage electricity
Source module 5；Wherein, the delivery pipe 1 radially offers several mounting holes 10；The control grid 2 is set to the conveying
On the inner wall of pipe 1 and surround several mounting holes 10；One ionic wind nozzle 3, and the ion are installed in each mounting hole 10
The cavity of tuyere 3 is communicated with the lumen of the delivery pipe 1；An electric discharge prong 4 is placed in the cavity of each ionic wind nozzle 3；Institute
High-voltage power module 5 is stated to connect with any electric discharge prong 4.
Preferably, please refer to Fig. 1 and Fig. 2, Fig. 2 is that part powder electrostatic arrester cuts open in an embodiment of the present invention
Face schematic diagram.As shown in Figures 1 and 2, several mounting holes 10 are spacedly distributed along the circumferential direction of the delivery pipe 1, ion wind
The quantity of mouth 3, the quantity for the prong 4 that discharges are consistent with the quantity of mounting hole 10.In the present embodiment, 10 quantity of mounting hole is 8, phase
The quantity for the ionic wind nozzle 3 answered and the quantity of electric discharge prong 4 are 8.The quantity of mounting hole 10 can root in the utility model
According to the diameter of delivery pipe 1, quantity can be increased and decreased.
Further, the polarity of voltage of the control grid is consistent with the electrification polarity of charged powder；The control grid
Range of voltage values be ± 2kV~± 3kV.The control grid can be metal foil, ring while being pasted on conveying inside pipe wall
Around several mounting holes.Preferably, control gate extremely rectangle metal foil, by taking 4 cun of delivery pipes as an example, rectangle metal foil volume
Song constitutes cylindrical body, and the length of cylindrical body is 80mm, diameter 26mm.
The working principle of grid is controlled in the utility model:
Control grid is disposed in proximity to the position of ionic wind nozzle, control grid is allowed delicately to adjust ion output
Amount is gone to neutralize charged powder with appropriate ionic weight, effectively improves electric eliminating efficiency.
Set consistent with the electrification polarity of charged powder for the polarity of voltage for controlling grid, therefore the two is mutually exclusive, from
And substantially reduce the viscous wall rate of powder, effectively prevent in feed bin may the thus raw mode of propagation brush discharge of evil safety it is hidden
Suffer from.
In the present embodiment, with continued reference to FIG. 1, in order to meet the electric eliminating demand in different electric eliminating places, by the high-voltage electricity
Source module 5 is designed as specifically including: single-pole double-throw switch (SPDT), DC type high voltage power supply and AC type high voltage power supply, the single-pole double throw are opened
The moved end selective connection DC type high voltage power supply (the specially high-voltage output end Vd of DC type high voltage power supply) or AC type high-voltage electricity of pass
Source.In other words, the suitable high-voltage electricity of moved end selective connection of single-pole double-throw switch (SPDT) is adjusted according to the electric eliminating demand in electric eliminating place
Source Type.Wherein, the non-moving end of the single-pole double-throw switch (SPDT) is connect with an electric discharge prong；The non-moving end of the single-pole double-throw switch (SPDT)
It is connect by high-tension resistive with electric discharge prong, the resistance value of the high-tension resistive is 100M Ω.Preferably, the DC type high voltage power supply
The DC high-voltage power supply for being ± 5kV for output；The DC type high voltage power supply is the ac high voltage source that output is 50Hz, 7kV.
It is preferably docked for the ease of delivery pipe with powder material warehouse feed pipe, the caliber for choosing the delivery pipe is less than powder
The diameter of bin feed pipe, it is preferred that the delivery pipe is pvc pipe；The caliber of the delivery pipe is equal to powder material warehouse feed pipe
Radius.
Preferably, electric discharge prong is made of tungsten alloy；The long range of needle of each electric discharge prong is 10mm~50mm；Needle diameter
Range is 1.0mm~1.1mm；Needle point range of taper is 0 °~60 °.Preferably, that selects in the present embodiment puts the needle of a prong
A length of 30mm, needle diameter are 1.1mm, and needle point taper is 45 °.
In order to preferably manage the voltage of control grid, the control grid is connect with grid-control voltage terminal Vg.Control
The polarity of voltage of grid processed be it is ambipolar, can just bear, grid voltage pole is specifically determined by the electrification polarity of charged powder
Property.For convenient for adjusting, grid-control voltage terminal Vg is connected to control grid positive pressure or control gate by a single-pole double-throw switch (SPDT)
Pole negative pressure.When powder electrostatic arrester does not work, control grid is connected by control gate voltage terminal Vg with the earth, with
Guarantee electrostatic safety.
Correspondingly, the present embodiment additionally provides a kind of application method of powder electrostatic arrester.Below with reference to Fig. 1 and Fig. 2
The application method of powder electrostatic arrester described in the present embodiment is described in detail, as shown in figure 3, the powder electrostatic arrester makes
Included the following steps: with method
Firstly, executing step S1, delivery pipe is connected by the feed pipe of flange and powder material warehouse, is measured in powder material warehouse
The electrification polarity of charged powder, and the output voltage of high-voltage power module is set；
Then, step S2 is executed, sets consistent with the electrification polarity of charged powder for the polarity of voltage for controlling grid；
Then, step S3 is executed, the compressed air with predetermined pressure is added into each ionic wind nozzle, so that ionic wind nozzle
Middle formation ion wind blows to charged powder.Wherein, the predetermined pressure range is 250kPa~300kPa.
Specifically, using blowing compressed air in the instrument wind direction ionic wind nozzle of blower or process units.
In order to verify the utility model powder electrostatic arrester reliability, carried out below with electric eliminating performance test detailed
It illustrates.
Specifically referring to FIG. 1, can directly reflect the electric eliminating efficiency when work of powder electrostatic arrester due to ionic current
Just, therefore, a stick metallic test electrode 6 is introduced at input channel center in electric eliminating performance test, for detecting ion wind
Ionic current size between mouth and the stick metallic test electrode 6.
Separately below using DC (direct current) type high voltage power supply and AC (exchange) type high voltage power supply as powder electrostatic arrester
High voltage power supply is tested, and carries out ionic current test with both positive and negative grid voltage.Test result is as shown in Figure 4, Figure 5,
Fig. 4 is the test result figure of the high voltage power supply progress ionic current test using DC type high voltage power supply as powder electrostatic arrester.
Fig. 5 is the test result figure of the high voltage power supply progress ionic current test using AC type high voltage power supply as powder electrostatic arrester.
Test relevant parameter are as follows: delivery pipe upper installing hole quantity is 8, and the diameter of delivery pipe is 100mm, length is
150mm；High voltage power supply (being divided to DC type high voltage power supply, two kinds of AC type high voltage power supply) supply voltage is 5kV and 7kV, to ionic wind nozzle
Electric discharge prong power supply；The pressure for adding to the compressed air of each ionic wind nozzle is 250kPa~300kPa, the ion wind of generation
Blow to charged powder or stick metallic test electrode, the diameter of the stick metallic test electrode is 10mm, length 80mm；Circle
Cylindricality controls grid length 80mm, diameter 26mm；The voltage for controlling grid is ± 0kV~± 3kV is adjustable.
1. using the powder electrostatic arrester of DC type high voltage power supply
When the supply voltage of DC type high voltage power supply is 5kV, (voltage of grid, subsequent letter are controlled in different grid voltages
Referred to as grid voltage) under the conditions of, experimental data is obtained as shown in table 4-1.
The ion current data when supply voltage of table 4-1:DC type high voltage power supply is 5kV, under different grid voltages
| Grid voltage (kV) | -3 | -2 | -1 | 0 | 1 | 2 |
| Ionic current (μ A) | 6.81 | 6.26 | 5.03 | 2.87 | 1.00 | 0 |
When the supply voltage of DC type high voltage power supply is 7kV, (voltage of grid, subsequent letter are controlled in different grid voltages
Referred to as grid voltage) under the conditions of, experimental data is obtained as shown in table 4-2.
The ion current data when supply voltage of table 4-2:DC type high voltage power supply is 7kV, under different grid voltages
| Grid voltage (kV) | -3 | -2 | -1 | 0 | 1 | 2 |
| Ionic current (μ A) | 6.76 | 6.17 | 4.90 | 2.21 | 0.99 | 0 |
It can be obtained by the ion current data of table 4-1 and table 4-2 using DC type high voltage power supply as powder electrostatic arrester
High voltage power supply carry out the test result figure of ionic current test, it is specific as shown in figure 4, abscissa is gate voltage values in Fig. 4；
Ordinate is ionic current values, and ionic current values can directly reflect the electric eliminating efficiency of the powder electrostatic arrester.
It is shown based on Fig. 4, table 4-1 and table 4-2: increasing control grid with not plus compared with control grid, electric eliminating efficiency is distinguished
Increase 2.37 times (direct current 5kV type pipeline powder Xelminators) and 3.06 times of (direct current 7kV type pipeline powder static eliminations
Device).
2. using the powder electrostatic arrester of AC type high voltage power supply
When the supply voltage of AC type high voltage power supply is 5kV, (voltage of grid, subsequent letter are controlled in different grid voltages
Referred to as grid voltage) under the conditions of, experimental data is obtained as shown in table 4-3.
The ion current data when supply voltage of table 4-3:AC type high voltage power supply is 5kV, under different grid voltages
| Grid voltage (kV) | -3 | -2 | -1 | 0 | 1 | 2 |
| Ionic current (μ A) | 3.00 | 2.82 | 2.39 | 1.18 | 0.45 | 0.18 |
When the supply voltage of AC type high voltage power supply is 7kV, (voltage of grid, subsequent letter are controlled in different grid voltages
Referred to as grid voltage) under the conditions of, experimental data is obtained as shown in table 4-4.
The ion current data when supply voltage of table 4-4:AC type high voltage power supply is 7kV, under different grid voltages
| Grid voltage (kV) | -3 | -2 | -1 | 0 | 1 | 2 |
| Ionic current (μ A) | 2.80 | 2.56 | 2.30 | 1.07 | 0.37 | 0.18 |
It can be obtained by the ion current data of table 4-3 and table 4-4 using AC type high voltage power supply as powder electrostatic arrester
High voltage power supply carry out the test result figure of ionic current test, it is specific as shown in figure 5, abscissa is gate voltage values in Fig. 5；
Ordinate is ionic current values, and ionic current values can directly reflect the electric eliminating efficiency of the powder electrostatic arrester.
Fig. 5, table 4-3, table 4-4 are shown: increasing control grid with not plus compared with control grid, electric eliminating efficiency increases separately
2.54 times (exchange 5kV type pipeline powder Xelminator) with 2.62 times (exchanging 7kV type pipeline powder Xelminator).
Above-mentioned test result shows:
(1) polarity of grid voltage and height (numerical value) have significant impact to ionic current (no matter electrode supply are DC types
Or AC type).
(2) using the maximum ion electric current of the powder electrostatic arrester of DC type high voltage power supply than using AC type high voltage power supply
Powder electrostatic arrester it is big, it is almost double.
(3) for the powder electrostatic arrester using DC type high voltage power supply, when the polarity and electrification powder of grid voltage
When body polarity is identical (this experiment powder is negatively charged), ionic current is very big；The significantly larger than polarity of grid voltage and powder charge
Opposite polarity ionic current.
(4) for the powder electrostatic arrester using AC type high voltage power supply, a grid electricity greater than -2kV is needed
Pressure could effectively increase electric eliminating ability.Newest test result shows that -2kV~-3kV grid voltage can enough effectively
Ground prevents the static discharge of causing danger property in powder material warehouse.Therefore voltage value ± 2kV~± 3kV of grid voltage is optional.This reality
Applying grid voltage in example is preferably ± 3kV.
To sum up result proves: the powder electrostatic arrester of the utility model, which introduces control grid, can effectively improve electrification powder
The electric eliminating efficiency of body, and the electric eliminating efficiency of charged powder can be effectively controlled.
For the method disclosed in the embodiment, as corresponding with structure disclosed in embodiment, so the comparison of description
Simply, related place illustrates referring to structure division.
To sum up, in powder electrostatic arrester provided by the utility model, the powder electrostatic arrester includes one defeated
Send pipe, a control grid, several ionic wind nozzles, several electric discharge prongs and a high-voltage power module；Wherein, the delivery pipe is along diameter
To offering several mounting holes；The control grid is set on the inner wall of the delivery pipe and surrounds several mounting holes；
One ionic wind nozzle is installed, and the cavity of the ionic wind nozzle is communicated with the lumen of the delivery pipe in each mounting hole；Each
An electric discharge prong is placed in the cavity of ionic wind nozzle；The high-voltage power module is connect with any electric discharge prong.It is quiet in powder
Control grid is introduced in electric arrester, and control grid is disposed in proximity to the position of ionic wind nozzle, so that control grid can spirit
Ion output is adjusted quickly, goes to neutralize charged powder with appropriate ionic weight, to effectively control the electric eliminating effect of charged powder
Rate.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
Claims (8)
1. a kind of powder electrostatic arrester characterized by comprising if a delivery pipe, one control grid, several ionic wind nozzles,
Dry electric discharge prong and a high-voltage power module；Wherein, the delivery pipe radially offers several mounting holes；The control grid
It is set on the inner wall of the delivery pipe and surrounds several mounting holes；One ionic wind nozzle is installed in each mounting hole, and
The cavity of the ionic wind nozzle is communicated with the lumen of the delivery pipe；A discharge tip is placed in the cavity of each ionic wind nozzle
Needle；The high-voltage power module is connect with any electric discharge prong.
2. powder electrostatic arrester as described in claim 1, which is characterized in that the polarity of voltage of the control grid and electrification
The electrification polarity of powder is consistent.
3. powder electrostatic arrester as claimed in claim 2, which is characterized in that it is described control grid range of voltage values be ±
2kV~± 3kV.
4. powder electrostatic arrester as claimed in claim 3, which is characterized in that the control gate extremely metal foil.
5. powder electrostatic arrester as described in claim 1, which is characterized in that several mounting holes are along the delivery pipe
Circumferentially it is spacedly distributed.
6. powder electrostatic arrester as described in claim 1, which is characterized in that the high-voltage power module includes: that hilted broadsword is double
Throw switch, DC type high voltage power supply and AC type high voltage power supply, the moved end selective connection DC type high-voltage electricity of the single-pole double-throw switch (SPDT)
Source or AC type high voltage power supply, the non-moving end of the single-pole double-throw switch (SPDT) are connect with an electric discharge prong.
7. powder electrostatic arrester as claimed in claim 6, which is characterized in that the DC type high voltage power supply be output for ±
The DC high-voltage power supply of 5kV；The DC type high voltage power supply is the ac high voltage source that output is 50Hz, 7kV.
8. powder electrostatic arrester as described in claim 1, which is characterized in that the caliber of the delivery pipe is less than powder material warehouse
The diameter of feed pipe；The long range of needle of each electric discharge prong is 10mm~50mm；Needle diameter range is 1.0mm~1.1mm；Needle point
Range of taper is 0 °~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167372.3U CN208657147U (en) | 2018-07-23 | 2018-07-23 | Powder electrostatic arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167372.3U CN208657147U (en) | 2018-07-23 | 2018-07-23 | Powder electrostatic arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208657147U true CN208657147U (en) | 2019-03-26 |
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ID=65785595
Family Applications (1)
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| CN201821167372.3U Active CN208657147U (en) | 2018-07-23 | 2018-07-23 | Powder electrostatic arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592586A (en) * | 2019-10-29 | 2019-12-20 | 岗春激光科技（江苏）有限公司 | Powder feeding device |
-
2018
- 2018-07-23 CN CN201821167372.3U patent/CN208657147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592586A (en) * | 2019-10-29 | 2019-12-20 | 岗春激光科技（江苏）有限公司 | Powder feeding device |
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