CN209824108U - DC powder charge eliminating device - Google Patents
DC powder charge eliminating device Download PDFInfo
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- CN209824108U CN209824108U CN201822277864.4U CN201822277864U CN209824108U CN 209824108 U CN209824108 U CN 209824108U CN 201822277864 U CN201822277864 U CN 201822277864U CN 209824108 U CN209824108 U CN 209824108U
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Abstract
A DC powder charge eliminating device belongs to the field of static elimination. A hollow base is arranged on the electricity eliminating pipeline; the base is provided with a lock catch structure, and the gas path component, the circuit board and the electrode needle are fixedly connected with the upper end of the base into a whole; the electrode needle is connected with the circuit board through a spring metal plug-in; a flame-retardant packing layer is arranged between the lower end of the gas path component and the base; an air supply duct is arranged between the periphery of the needle body of the electrode needle and the flame-retardant packing layer; the discharge cavity is communicated with the electric eliminating pipeline through the opening end at the lower end of the base; the air passage of the air passage component is communicated with the discharge cavity, the opening end at the lower end of the base and the electric eliminating pipeline; the circuit board is electrically connected with a direct current power supply or a pulse direct current power supply through a high voltage head. The electric shock absorber can prevent the electric shock absorber body and the electric shock absorbing pipeline from being blocked by powder, so that the safety is improved; the energy limiting element is added to the electric eliminator body by independently arranging the electric eliminator body, so that the safety and the reliability in the use process are improved. The method can be widely applied to the field of design and manufacture of the power-eliminating device of the powder conveying system.
Description
Technical Field
The utility model belongs to the electrostatic elimination field especially relates to a direct current powder charge remove device and elimination system that is arranged in powder storage and transport operation process.
Background
During the powder storage transportation and loading and unloading operation, an obvious electrostatic electrification process can be presented due to frequent contact and re-separation between materials and pipe walls and container walls and between material particles.
The charged combustible materials are easy to ignite and explode along with the accumulation of static electricity.
Therefore, monitoring and eliminating the particle static electricity accurately in time becomes an important issue in the field of static electricity research and industrial control.
The powder static eliminator for ion wind pipeline has high voltage applied to the electrode needle to ionize air molecule and blowing positive and negative ions to the powder conveying pipeline to eliminate static charge.
However, in practical work, the existing ionic wind pipeline powder static eliminator has the following problems:
1. the ion output characteristic can not be adjusted, so that the electricity eliminating efficiency is not ideal;
2. the ion air outlet of the electricity eliminator is easily blocked by powder, and the structural design needs to be improved;
3. the electric eliminator body and the electric eliminating pipeline are integrated, so that the electric eliminator is inconvenient to produce, manufacture, install and use and only suitable for pipelines with single diameter; pipeline electric appliances with different diameters need to be manufactured again;
4. the safety and reliability of the suppressor body and the safety control system are to be further improved.
How to improve the electricity eliminating efficiency of the static eliminator, avoid the static eliminator to be blocked by powder, improve the safety of the static eliminator, further improve the safety and the reliability of the use process, become the problem to be solved urgently in the actual design and manufacturing work.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a direct current powder charge remove device and elimination system are provided. The structural design of the electricity eliminator body and the electricity eliminating pipeline is further optimized, so that the blockage by powder is avoided, and the safety is improved; the energy limiting element is added to the electric eliminator body, and the monitoring device of the control system is added, so that the safety and reliability of the powder charge eliminator and the elimination system in the use process are further improved.
The technical scheme of the utility model is that: the utility model provides a direct current powder charge remove device, is including the circuit board that is used for producing charged ion, electrode needle and the gas circuit component that is used for blowing charged ion into powder pipeline, characterized by:
arranging a fire extinguisher body;
the electric eliminator body comprises an electric eliminating pipeline and at least one ionic wind electric eliminator arranged on the electric eliminating pipeline;
the electricity eliminating pipeline is connected in series in the powder conveying pipeline;
a base of a hollow structure is fixedly connected with the electricity eliminating pipeline;
the base is provided with a lock catch structure, and the gas path component, the circuit board and the electrode needle which are integrated with the gas path component are fixedly connected with the upper end of the base into a whole;
the circuit board is arranged in the cavity at the upper end of the gas circuit component, and the electrode needle is electrically connected with the circuit board through a spring metal plug-in unit;
the electrode needle penetrates through the lower end of the gas circuit component and the lock catch structure, and a discharge end is formed at the lower part of the base;
a flame-retardant filler layer made of tetrafluoro or flame-retardant ABS plastic is arranged between the lower end of the gas circuit component and the base;
the flame-retardant filler layer is arranged between the discharge end of the electrode needle and the opening end of the lower end of the base to form a discharge cavity to form an ion air outlet of the ion air eliminator;
an air supply duct is arranged between the periphery of the needle body of the electrode needle and the flame-retardant packing layer;
the discharge cavity is communicated with the electric eliminating pipeline through an opening end at the lower end of the base;
the air passage of the air passage component is communicated with the discharge cavity, the opening end at the lower end of the base and the air passage of the electricity eliminating pipe through an air supply passage arranged in the flame-retardant packing layer;
the circuit board is electrically connected with a direct current power supply or a pulse direct current power supply through a high voltage head.
Further, a mesh enclosure is arranged at the opening end of the lower end of the base; and a first rubber gasket and a second rubber gasket are respectively arranged at the joint part of the gas path component and the flame-retardant packing layer and the joint part of the flame-retardant packing layer and the base.
Furthermore, a high-voltage ceramic chip type resistor is arranged on the circuit board, one end of the high-voltage ceramic chip type resistor is electrically connected with the high-voltage head connecting piece on the circuit board, and the other end of the high-voltage ceramic chip type resistor is electrically connected with the spring metal plug-in at the tail end of the electrode pin.
Specifically, a cavity at the upper end of the gas circuit component is filled with high-voltage electronic pouring sealant, and a high-voltage head connecting piece and a high-voltage ceramic piece type resistor on the circuit board and the circuit board are sealed and fixedly connected in the cavity at the upper end of the gas circuit component.
Specifically, the electrode needle is vertically intersected with the electricity eliminating pipeline.
The first end and the last end of the electricity eliminating pipeline are correspondingly connected with the first end and the last end of the powder conveying pipeline through flanges respectively.
The utility model also provides a direct current powder charge remove device, characterized by:
a discharging ball valve is arranged on the powder material conveying pipeline, and a sleeve and a fire extinguisher body positioned in the sleeve are arranged on the powder material conveying pipeline at the downstream of the discharging ball valve;
a first powder charge monitor and a second powder charge monitor are respectively and correspondingly arranged on powder material conveying pipelines at the front end and the rear end of the electric eliminator body; the first powder charge monitor and the second powder charge monitor form a charge monitoring system;
the signal output ends of the first and second powder charge monitors are respectively and correspondingly connected with the remote control cabinet and the electric eliminator control cabinet;
at least two ionic wind electricity eliminators are arranged on the electricity eliminator electricity elimination pipeline;
the two ion wind electricity eliminators are symmetrically arranged along the cross section of the electricity eliminator electricity elimination pipeline;
the air path of each ion wind electricity eliminator is connected with the air path of the air supply system through an electromagnetic valve, and the control circuit of each ion wind electricity eliminator is correspondingly connected with the electricity eliminator control cabinet respectively;
the signal output end of the remote control cabinet is correspondingly connected with the discharge ball valve, the air supply system and the control end of the electromagnetic valve respectively;
a pipeline pressure monitoring system is arranged on the air supply pipeline between the air source and the electric eliminator body;
the pipeline pressure monitoring system comprises a pressure meter and a flow meter.
Furthermore, a powder material conveying pipeline at the downstream of the discharging ball valve is provided with a fire extinguisher body in series.
Specifically, the first and second powder charge monitors are oscillating capacitor type powder charge monitors.
Compared with the prior art, the utility model has the advantages that:
1. the combined mechanical structure that the sleeve, the electricity eliminating pipeline of the electricity eliminator and the powder conveying pipeline are connected in series is adopted, the universality of the same ion wind electricity eliminator on pipelines with different diameters is realized, the manufacture, the installation and the use are convenient, and the manufacture and the installation efficiency of the product are improved;
2. the circuit board, the high-pressure head connecting piece on the circuit board and the high-pressure ceramic chip type resistor are sealed by pouring high-pressure electronic pouring sealant and fixedly connected in the concave cavity at the upper end of the gas circuit component, so that spark discharge generated inside is avoided, the electricity eliminating performance of the product is ensured, and the explosion-proof safety requirement is met;
3. the high-voltage ceramic chip resistor is adopted as a direct-current powder charge eliminating device and an energy limiting element (high-voltage ceramic chip resistor) is added to the electric eliminator body to prevent corona discharge on the electrode needle from transiting to spark discharge, ensure discharge safety and avoid the ignition of dust mistakenly entering a discharge cavity or an ion air outlet due to overlarge discharge energy;
4. the ionic wind electricity eliminator with fixed cross section structure size (the ionic wind electricity eliminator has fixed structure and different length) is adopted, and sleeves and electricity eliminator electricity eliminating pipelines with different diameters are matched, so that the ionic wind electricity eliminator not only can adapt to powder material conveying pipelines with different pipe diameters, but also can be used universally on pipelines with different diameters; the design and the manufacturing process of the electric eliminator body are simplified;
5. the high-voltage output characteristic of the power supply of the direct current powder charge eliminating device is adjusted and controlled according to the charge values fed back by the first charge monitor and the second charge monitor, so that the ion output characteristic of the ion wind eliminator can be adjusted in time according to the static electricity carried by the powder in real time, and the electricity eliminating efficiency of the powder charge eliminating device is greatly improved.
Drawings
Fig. 1 is a schematic structural view of the electric eliminator body of the present invention;
FIG. 2 is a schematic view of the installation structure of the electric heat dissipater body of the present invention on a pipeline;
fig. 3 is a schematic diagram of a system of the dc powder charge removing device of the present invention.
In the figure, 1 is a power-eliminating pipeline, 2 is a base, 3 is a lock catch structure, 4 is a gas path component, 5 is a gas path, 6 is a cavity, 7 is a circuit board, 8 is a high-voltage electronic pouring sealant, 9 is a spring metal plug-in, 10 is an electrode needle, 11a is a first rubber gasket, 11b is a second rubber gasket, 12 is a flame-retardant packing layer, 13 is an air supply duct, 14 is a mesh enclosure, 15 is a sleeve, 16 is a gas source pipe, 17 is a power line inlet pipe, 18 is a discharge ball valve, 19 is a first powder charge monitor, 20 is a second powder charge monitor, and 21 is a powder bin.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In fig. 1, the technical solution of the present invention provides a dc powder charge eliminating device, which includes a circuit board for generating charged ions, an electrode needle and a gas circuit component for blowing the charged ions into a powder conveying pipeline, and the invention point is that:
arranging a fire extinguisher body; the electric eliminator body comprises an electric eliminating pipeline 1 and at least one ionic wind electric eliminator arranged on the electric eliminating pipeline;
the electricity eliminating pipeline is connected in series in the powder conveying pipeline; the air path component of the ion wind electricity eliminator is used for blowing charged ions into the electricity elimination pipeline;
a base 2 of a hollow structure is fixedly connected with the electricity eliminating pipeline; the base is provided with a locking structure 3, and the gas path component 4, the circuit board 7 and the electrode needle 10 which are integrated with the gas path component are fixedly connected with the upper end of the base into a whole;
the circuit board is arranged in the cavity 6 at the upper end of the gas circuit component, and the electrode needle is electrically connected with the circuit board through a spring metal plug-in unit 9; the electrode needle penetrates through the lower end of the gas path component and the lock catch structure and forms a discharge end at the lower part of the base;
a flame-retardant filler layer 12 made of tetrafluoro or flame-retardant ABS plastic is filled between the lower end of the gas circuit component and the base; the flame-retardant filler layer is arranged between the discharge end of the electrode needle and the opening end of the lower end of the base to form a discharge cavity to form an ion air outlet of the ion air eliminator;
an air supply duct 13 is arranged between the periphery of the needle body of the electrode needle and the flame-retardant packing layer;
the discharge cavity is communicated with the electric eliminating pipeline through an opening end at the lower end of the base;
the air passage of the air passage component is communicated with the discharge cavity, the opening end at the lower end of the base and the air passage of the electricity eliminating pipe through an air supply passage arranged in the flame-retardant packing layer;
the circuit board is electrically connected with a direct current power supply or a pulse direct current power supply through a high voltage head, and the output characteristic of the ion wind eliminator is changed by adjusting the output voltage of the direct current power supply or adjusting the voltage output duty ratio or frequency of the pulse direct current power supply.
Further, a mesh enclosure 14 is arranged at the opening end of the lower end of the base, and the mesh enclosure is a metal mesh enclosure and is used for preventing powder from entering the discharge cavity or an air outlet of the ion wind eliminator.
Furthermore, a high-voltage ceramic chip type resistor is welded on the circuit board, one end of the high-voltage ceramic chip type resistor is electrically connected with a high-voltage head connecting piece on the circuit board, and the other end of the high-voltage ceramic chip type resistor is electrically connected with a spring metal plug-in at the tail end of the electrode pin.
The ion wind eliminator forms an energy limiting element by arranging a high-voltage ceramic sheet type resistor to prevent corona discharge on an electrode needle from transiting to spark discharge, ensures discharge safety, avoids dust mistakenly entering a discharge cavity or an ion air outlet from being ignited due to overlarge discharge energy, and enables an ion wind eliminator product to meet the explosion-proof safety requirement.
Furthermore, a cavity at the upper end of the gas circuit component is filled with high-voltage electronic pouring sealant 8, and a high-voltage head connecting piece and a high-voltage ceramic piece type resistor on the circuit board and the circuit board are sealed and fixedly connected in the cavity at the upper end of the gas circuit component.
Tetrafluoro is a polymer of tetrafluoroethylene, abbreviated by the english term PTFE. The dielectric loss is small, the breakdown voltage is high, and the surface non-adhesiveness and the non-inflammability are good.
The flame-retardant ABS plastic is prepared by adding a flame retardant on the basis of ABS.
According to the technical scheme, the cavity at the upper end of the gas circuit component is filled with the high-voltage electronic pouring sealant, so that spark discharge generated inside the cavity is avoided, the electricity dissipation performance of the product is ensured, and the explosion-proof safety requirement is met.
In actual production, in order to simplify the process and accelerate the assembly speed, the flame-retardant filler layer made of tetrafluoro or flame-retardant ABS plastic can be made into a shaped workpiece (called as a sleeve or a flame-retardant sleeve) to accelerate the assembly speed and ensure the flame-retardant effect.
In the actual manufacturing process, the ion wind eliminator adopts the following assembling process:
1. welding a base with external threads on the pipe wall of the electricity-eliminating pipeline;
2. placing a metal mesh enclosure at an opening at the bottom of the base;
3. inserting the electrode pin into the spring metal insert to realize interference fit with the spring metal insert;
4. inserting an electrode into a tetrafluoro (or flame-retardant ABS) sleeve, screwing the sleeve into an insulating rod core, and electrically connecting a spring thimble at the top end of the needle sleeve with a circuit board;
5. the tetrafluoro sleeve (or flame-retardant ABS) is placed in the base, and the base and the tetrafluoro sleeve (or flame-retardant ABS) are screwed tightly by rotating the lock catch.
In order to ensure the air tightness of the air supply channel, a first rubber gasket 11a and a second rubber gasket 11b are respectively arranged at the joint part of the air channel component and the flame-retardant packing layer and the joint part of the flame-retardant packing layer and the base.
In fig. 2, at least two ion wind electricity eliminators (4 ion wind electricity eliminators are taken as an example in the figure) are arranged on the electricity eliminator electricity elimination pipeline; each ion wind electricity eliminator is symmetrically arranged along the cross section of the electricity eliminator electricity eliminating pipeline;
as can be seen from the figure, the electrode needle is vertically intersected with the electricity eliminating pipeline.
The technical scheme is that a sleeve 15 is coaxially and concentrically arranged on the periphery of a power-eliminating pipeline, and the power-eliminating pipeline and an ionic wind power eliminator arranged on the power-eliminating pipeline are accommodated in the sleeve.
The pipe diameter of the sleeve is the same as that of the powder material transportation pipeline at the position to be installed.
In order to provide an air source passage for the electric shock eliminator body and meet the requirement of explosion prevention, an air source pipe 16 is arranged in the sleeve and is used for intensively providing an air source for the plurality of ionic wind electric shock eliminator bodies contained in the sleeve. Meanwhile, a power cord inlet pipe 17 is further arranged to prevent the power cord from being worn and damaged, and meet the requirement of explosion prevention.
The ion wind eliminator in the technical scheme is independently designed, so that the ion wind eliminator can be conveniently used on pipelines with different diameters, the ion wind eliminator is convenient to manufacture and use, and the efficiency is improved. The ion wind eliminator is of a rod type, a plurality of electrode pins can be installed, and the complex wiring and potential safety hazards of a single-pin eliminator are avoided.
In fig. 3, the technical solution of the present invention further provides a dc powder charge removing device, which includes a charge removing pipeline and an ion wind charge remover arranged on the charge removing pipeline, and the invention is characterized in that:
arranging a sleeve, and accommodating the electricity eliminating pipeline and the ionic wind electricity eliminator arranged on the electricity eliminating pipeline;
a discharging ball valve 18 is arranged on the powder material conveying pipeline, and the sleeve and the electric eliminator body therein are arranged on the powder conveying pipeline at the downstream of the discharging ball valve.
A first powder charge monitor 19 and a second powder charge monitor 20 are respectively and correspondingly arranged on powder material conveying pipelines at the front end and the rear end of the electric eliminator body; the first powder charge monitor and the second powder charge monitor form a charge monitoring system;
the first powder charge monitor is used for detecting the static value of the conveyed powder material before the power is removed, and the second powder charge monitor is used for detecting the static value of the conveyed powder material after the power is removed;
the signal output ends of the first and second powder charge monitors are respectively and correspondingly connected with the remote control cabinet;
at least two ionic wind electricity eliminators are arranged on the electricity eliminator electricity elimination pipeline;
the two ion wind electricity eliminators are symmetrically arranged along the cross section of the electricity eliminator electricity elimination pipeline;
the air path of each ion wind electricity eliminator is connected with the air path of the air supply system through an electromagnetic valve, and the control circuit of each ion wind electricity eliminator is correspondingly connected with the electricity eliminator control cabinet respectively;
the signal output end of the remote control cabinet is correspondingly connected with the discharge ball valve, the air supply system and the control end of the electromagnetic valve respectively;
a pipeline pressure monitoring system is arranged on the air supply pipeline between the air source and the electric eliminator body;
the pipeline pressure monitoring system comprises a pressure meter and a flow meter and is used for transmitting a wind pressure value and a flow value in the air supply pipe to the control cabinet of the electric eliminator in real time.
The direct current powder charge eliminating device adopts a direct current power supply or a pulse direct current power supply as a power supply of the ion wind eliminator; adjusting the ion output characteristic of the ion wind eliminator according to the size of the static detection value measured by the first charge monitor; monitoring the electricity removal effect according to a second charge monitor, and transmitting a feedback signal to the remote control cabinet and the electricity remover control cabinet; the control cabinet of the electric eliminator further corrects the ion output characteristic of the ion wind electric eliminator according to the feedback signal so as to realize the optimal electric elimination effect and control the charge density of the powder to be always within a safety value.
As can be seen from fig. 3, the control system of the present technical solution mainly comprises a powder charge monitoring system, a pressure monitoring system, an air supply system, and a power control system.
The charge density measurement in the on-site pipeline mainly uses an oscillation capacitance type powder charge monitor, and the charge monitors are respectively arranged in front of and behind the ion wind eliminator. The air supply outlet of the ionic wind electric energy eliminator is connected to an air supply system through a flow meter, a pressure meter and an electromagnetic valve.
The technical scheme is that a direct current power supply or a pulse direct current power supply is adopted to enhance the electricity eliminating performance of the ion wind electricity eliminator.
And adjusting the output voltage of the direct current power supply according to the charge density measured by the first charge monitor, or adjusting the output duty ratio and frequency of the pulse direct current power supply voltage.
The second charge monitor is used for monitoring the electricity removal effect and feeding back a signal; and further correcting the output high-voltage characteristic of the power supply according to the feedback signal so as to realize the optimal electricity eliminating effect and control the charge density of the powder to be always within a safety value.
In the embodiment shown in fig. 3, a fire extinguisher body is arranged in series on the powder material conveying pipeline downstream of the discharging ball valve.
Furthermore, the first powder charge monitor and the second powder charge monitor are oscillation capacitance type powder charge monitors.
Since the oscillation capacitor type powder charge monitor is the prior art, the specific working principle and the connection relation of the gas circuit and the circuit are not described herein, and the actual implementation can be carried out according to the specification in the product specification of the manufacturer.
In fig. 1, 2 and 3, circles with "+", "-" signs marked on the ion outlet represent particles with positive or negative charges, which is a customary notation in the industry; the number of charged particles or the polarity of the charged particles is indicated by the number of circles with "+" and "-" signs, and the circles without "+" and "-" signs indicate the particles without polarity after being de-energized. As can be seen from the particles shown in fig. 3, which are located in the powder bin, the amount of charge carried by the transported powder particles is greatly reduced after the power is removed.
In the technical scheme, before powder conveying operation starts, a remote control system instructs an air supply system to supply air, and a pressure gauge and a flow gauge transmit a starting signal, a real-time air pressure value and a real-time flow value to a control cabinet of a power consumption device; when the wind pressure value and the flow value reach the specified values respectively and are kept for a certain time (the delay time can be set), the control cabinet of the electric eliminator starts the power supply of the ion wind electric eliminator; meanwhile, a signal is transmitted to the remote control cabinet, the remote control cabinet instructs the first charge monitor and the second charge monitor to work, the discharge ball valve is started, and materials start to be conveyed pneumatically.
The control cabinet of the electric eliminator adjusts and controls the high-voltage output characteristic of the electric eliminator power supply according to the charge values fed back by the first and second charge monitors, so that the charge density of the powder is controlled within a safe value range.
When the powder conveying operation is finished, the remote control system sends closing instructions to the discharging ball valve, the power supply of the electricity eliminator and the charge monitoring system in sequence; the air supply system delays the time for the electric eliminator to continue supplying air (the delay time can be set).
Through the working process, the technical scheme effectively realizes the remote, real-time and online monitoring and elimination of static electricity in the pneumatic conveying process of industrial powder, facilitates operators and ensures the production safety.
The utility model discloses technical scheme DC powder charge remove device's the work step that disappears is as follows:
1. before the powder conveying operation starts, the remote control cabinet instructs the electromagnetic valve to be closed, and the air supply system supplies air;
2. the gas flowmeter and the pressure gauge respectively transmit the flow signal and the pressure signal to the control cabinet of the electricity eliminator;
3. when the wind pressure value and the flow value reach the specified values respectively and are kept for a certain time (the delay time can be set), the control cabinet of the electric eliminator starts the power supply of the ion wind electric eliminator to enable the ion wind electric eliminator to work;
4. the electric eliminator control cabinet transmits a signal to the remote control cabinet, and the remote control cabinet instructs the first charge monitor and the second charge monitor to work;
5. the remote control cabinet starts a discharging ball valve, and materials are conveyed pneumatically;
6. the materials pass through a first charge monitor, an ion wind eliminator and a second charge monitor in sequence; the first charge monitor and the second charge monitor feed back the monitored charge values to the control cabinet of the electric eliminator;
7. the control cabinet of the electric eliminator adjusts the high-voltage output characteristic of the power supply of the ion wind electric eliminator in real time according to the feedback charge value, so that the ion output changes correspondingly along with the electrostatic charging condition of material particles, and the optimal electric eliminating effect is realized;
8. in the working process of the ionic wind fire extinguisher, the flow meter and the pressure gauge can monitor the gas flow value and the pressure value at any time and feed back the gas flow value and the pressure value to the fire extinguisher control cabinet in real time;
9. once one or both of the gas flow value and the pressure value are lower than the set values, the control cabinet of the electric shock eliminator immediately closes the power supply of the ionic wind electric shock eliminator, stops supplying power to the ionic wind electric shock eliminator, avoids ignition danger and feeds back a fault signal to the remote control cabinet;
10. when the powder material conveying operation is completed, the remote control cabinet closes the discharging ball valve firstly;
11. then, sending an instruction to a control cabinet of the electric shock eliminator, and turning off a power supply of the electric shock eliminator by the control cabinet of the electric shock eliminator to stop supplying power to the electric shock eliminator;
12. after the electric eliminator stops working, the electric eliminator control cabinet sends a feedback signal to the remote control cabinet, and the remote control cabinet gives an instruction to close the charge monitor 1 and the charge monitor 2;
13. the air supply system continues to delay the air supply to the ion wind eliminator (the delay time can be set);
14. and after the delayed air supply time reaches a set value, the remote control cabinet closes the air supply system, and the whole production operation process is finished.
To sum up, the invention of the technical solution of the present invention is characterized in that:
1) the power supply of the electricity eliminator adopts a direct current power supply or a pulse direct current power supply;
2) the output voltage of the electricity eliminator is adjustable in high and low or voltage output duty ratio and frequency;
3) high-voltage generating components and high-voltage elements in the direct-current power supply or the pulse direct-current power supply are encapsulated by high-voltage electronic pouring sealant;
4) the circuit board in the electricity eliminator body is welded with a high-voltage ceramic chip type resistor with the resistance value of 100-500M omega and the power of 1-3W
5) One end of the high-voltage ceramic chip type resistor is electrically connected with the high-voltage head connecting piece, and the other end of the high-voltage ceramic chip type resistor is electrically connected with the electrode needle spring metal plug-in;
6) the electrode needle is in interference fit with the spring metal insert;
7) the high-voltage ceramic chip type resistor and the high-voltage head connecting piece are sealed by high-voltage electronic pouring sealant, so that spark discharge generated inside is avoided, and the electricity-eliminating performance of the product is ensured and the explosion-proof safety requirement is met;
8) the high-voltage ceramic chip type resistor has the functions of preventing the transition from corona discharge to spark discharge on the electrode needle, ensuring the safety of discharge and avoiding the ignition of dust mistakenly entering the ion air outlet due to overlarge discharge energy;
9) an air supply outlet of the ionic wind electricity eliminator is connected to an air supply system through a flow meter, a pressure meter and an electromagnetic valve in sequence, the air flow and the pressure are monitored, and flow and pressure signals are sent to an electricity eliminator control cabinet in real time; when the gas flow and the pressure are lower than the set values, the control cabinet of the electric eliminator cuts off the power supply of the electric eliminator, and stops supplying power to prevent ignition of the powder;
10) the air flow pressure at the air outlet of the ion wind power eliminator is always greater than the air flow pressure in the power elimination pipeline, so that the powder is prevented from flowing backwards into the power eliminator body, and the air outlet of the power eliminator is prevented from being blocked by the powder.
In addition, in fig. 2, the pipe diameter of the sleeve 15 is the same as the powder material transportation pipeline at the position to be installed.
The first end and the last end of the electricity eliminating pipeline are correspondingly connected with the first end and the last end of the powder material conveying pipeline through flanges respectively.
The structure has the advantages that the ionic wind electricity eliminator with fixed cross section structure size (the ionic wind electricity eliminator is fixed in structure and different in length) is adopted, and sleeves and electricity eliminating pipelines with different diameters are matched, so that the ionic wind electricity eliminator not only can adapt to powder material conveying pipelines with different pipe diameters, but also can be used universally on pipelines with different diameters; the design and the manufacturing process of the electric eliminator body are simplified.
Example (b):
after the technical scheme is adopted, the product is compared with the existing products sold in the market, and the comparison result is as follows:
from the above table it can be seen that: under the condition that the pipe diameter is the same, the same powder is conveyed, and the conveying conditions are the same, the powder static eliminator adopting the technical scheme of the patent is applied, and the electricity eliminating efficiency is obviously improved.
The technical scheme of the utility model after implementing, can produce following beneficial effect:
1. the ion output characteristic can be adjusted according to the electrostatic charge condition of the powder, so that the electricity eliminating efficiency is greatly improved;
2. the structure of the electricity eliminator body and the electricity eliminating pipeline is more reasonable, and the electricity eliminating efficiency is improved greatly;
3. the safety and the reliability of the electric eliminator body and the safety control system are ensured, and the electric eliminator has stronger explosion-proof performance.
The utility model discloses can extensively be used for the design, the manufacturing field of powder conveying system neutralization apparatus.
Claims (9)
1. The utility model provides a direct current powder charge remove device, is including the circuit board that is used for producing charged ion, electrode needle and the gas circuit component that is used for blowing charged ion into powder pipeline, characterized by:
arranging a fire extinguisher body;
the electric eliminator body comprises an electric eliminating pipeline and at least one ionic wind electric eliminator arranged on the electric eliminating pipeline;
the electricity eliminating pipeline is connected in series in the powder conveying pipeline;
a base of a hollow structure is fixedly connected with the electricity eliminating pipeline;
the base is provided with a lock catch structure, and the gas path component, the circuit board and the electrode needle which are integrated with the gas path component are fixedly connected with the upper end of the base into a whole;
the circuit board is arranged in the cavity at the upper end of the gas circuit component, and the electrode needle is electrically connected with the circuit board through a spring metal plug-in unit;
the electrode needle penetrates through the lower end of the gas circuit component and the lock catch structure, and a discharge end is formed at the lower part of the base;
a flame-retardant filler layer made of tetrafluoro or flame-retardant ABS plastic is arranged between the lower end of the gas circuit component and the base;
the flame-retardant filler layer is arranged between the discharge end of the electrode needle and the opening end of the lower end of the base to form a discharge cavity to form an ion air outlet of the ion air eliminator;
an air supply duct is arranged between the periphery of the needle body of the electrode needle and the flame-retardant packing layer;
the discharge cavity is communicated with the electric eliminating pipeline through an opening end at the lower end of the base;
the air passage of the air passage component is communicated with the discharge cavity, the opening end at the lower end of the base and the air passage of the electricity eliminating pipe through an air supply passage arranged in the flame-retardant packing layer;
the circuit board is electrically connected with a direct current power supply or a pulse direct current power supply through a high voltage head.
2. The dc powder charge eliminator according to claim 1, wherein a mesh enclosure is provided at an open end of a lower end of said base; and a first rubber gasket and a second rubber gasket are respectively arranged at the joint part of the gas path component and the flame-retardant packing layer and the joint part of the flame-retardant packing layer and the base.
3. The dc powder charge eliminator according to claim 1, wherein a high voltage ceramic resistor is disposed on said circuit board, one end of the high voltage ceramic resistor is electrically connected to a high voltage connector on the circuit board, and the other end is electrically connected to a spring metal plug at the end of the electrode pin.
4. The dc powder charge eliminator according to claim 1, wherein a cavity at the upper end of the gas circuit member is filled with a high-voltage electronic potting adhesive to fix the circuit board, the high-voltage head connector on the circuit board, and the high-voltage ceramic sheet type resistor in the cavity at the upper end of the gas circuit member.
5. The dc powder charge eliminator of claim 1, wherein said electrode pins are positioned perpendicularly across the discharge conduit.
6. The direct-current powder charge eliminator according to claim 1, wherein the first and second ends of the discharge pipe are connected to the first and second ends of the powder delivery pipe via flanges, respectively.
7. A DC powder charge eliminating device is characterized in that:
a discharging ball valve is arranged on the powder material conveying pipeline, and a sleeve and a fire extinguisher body positioned in the sleeve are arranged on the powder material conveying pipeline at the downstream of the discharging ball valve;
a first powder charge monitor and a second powder charge monitor are respectively and correspondingly arranged on powder material conveying pipelines at the front end and the rear end of the electric eliminator body; the first powder charge monitor and the second powder charge monitor form a charge monitoring system;
the signal output ends of the first and second powder charge monitors are respectively and correspondingly connected with the remote control cabinet and the electric eliminator control cabinet;
at least two ionic wind electricity eliminators are arranged on the electricity eliminator electricity elimination pipeline;
the two ion wind electricity eliminators are symmetrically arranged along the cross section of the electricity eliminator electricity elimination pipeline;
the air path of each ion wind electricity eliminator is connected with the air path of the air supply system through an electromagnetic valve, and the control circuit of each ion wind electricity eliminator is correspondingly connected with the electricity eliminator control cabinet respectively;
the signal output end of the remote control cabinet is correspondingly connected with the discharge ball valve, the air supply system and the control end of the electromagnetic valve respectively;
a pipeline pressure monitoring system is arranged on the air supply pipeline between the air source and the electric eliminator body;
the pipeline pressure monitoring system comprises a pressure meter and a flow meter.
8. The direct-current powder charge eliminating device according to claim 7, wherein a charge eliminator body is arranged in series on the powder material conveying pipeline downstream of the discharging ball valve.
9. The dc powder charge eliminator of claim 7, wherein said first and second powder charge monitors are oscillatory capacitance type powder charge monitors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277864.4U CN209824108U (en) | 2018-12-30 | 2018-12-30 | DC powder charge eliminating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277864.4U CN209824108U (en) | 2018-12-30 | 2018-12-30 | DC powder charge eliminating device |
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| CN209824108U true CN209824108U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688682A (en) * | 2018-12-30 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of direct current powder charger-eliminator and eliminate system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688682A (en) * | 2018-12-30 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of direct current powder charger-eliminator and eliminate system |
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