CN209767897U - Alternating current powder charge eliminating device - Google Patents
Alternating current powder charge eliminating device Download PDFInfo
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- CN209767897U CN209767897U CN201822277863.XU CN201822277863U CN209767897U CN 209767897 U CN209767897 U CN 209767897U CN 201822277863 U CN201822277863 U CN 201822277863U CN 209767897 U CN209767897 U CN 209767897U
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Abstract
an alternating current powder charge eliminating device belongs to the field of static elimination. An inclined base is arranged on the powder material conveying pipeline; the base and the powder material conveying pipeline form an included angle smaller than 90 degrees; the base is provided with a nozzle, the upper end of the nozzle is provided with a needle seat, a discharge needle is arranged in the needle seat, and the side surface of the discharge needle is provided with an air supply duct; the air supply duct, the nozzle, the inclined base and the powder material conveying pipeline are communicated in sequence through an air path; a shell is arranged on one side of the needle seat, and a circuit board is arranged in the shell; one end of the circuit board is connected with the high-voltage head connecting piece, and the other end of the circuit board is connected with the tail end of the discharge needle metal needle sleeve; epoxy glue is filled in the shell and the needle seat in a filling mode. The nozzle, the needle seat, the discharge needle, the air supply duct, the air connector seat, the circuit board, the high-pressure head connecting piece, the corresponding fastening part and the epoxy glue encapsulating layer form the ion wind power eliminator assembly. Which enables universal use on pipes of different diameters. The method is suitable for 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 an electrostatic elimination 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 an exchange powder charge remove device is provided. The structure design of the electricity eliminator body and the electricity eliminating pipeline is optimized, so that the blockage by powder is avoided, and the safety is improved; the energy-limiting element is arranged on the electric eliminator body, and the electric eliminator body is provided with the energy-limiting element and other electromechanical structures, so that the safety and the 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 an exchange powder charge remove device, including the circuit board that is used for producing charged ion, electrode needle and be used for blowing charged ion into the gas circuit component of powder pipeline, characterized by:
a hollow oblique base is arranged on the powder material conveying pipeline along the powder conveying direction;
An included angle smaller than 90 degrees is formed between the longitudinal axis of the oblique base and the longitudinal axis of the powder material conveying pipeline;
A nozzle is arranged on the oblique base and fixed in the oblique base through a hollow connecting screw to form an ion air outlet;
a needle seat is sleeved at the upper end of the nozzle; a discharge needle is arranged in the needle seat, and at least one air supply duct is arranged on the side surface of the discharge needle; the upper end of the needle seat is provided with an air joint seat to form an air supply outlet; the air joint seat, the air supply duct, the nozzle, the inclined base and the powder material conveying pipeline are sequentially communicated with each other through an air path;
a shell is arranged on one side of the needle seat, and a circuit board is arranged in the shell; one end of the circuit board is electrically connected with a high-voltage head connecting piece, and the other end of the circuit board is electrically connected with the tail end of the metal needle sleeve of the discharge needle;
The high-voltage head connecting piece is electrically connected with an alternating current power supply;
The part for accommodating the circuit board in the shell and the needle seat and the periphery of the needle seat are filled with epoxy glue in a potting way to form an epoxy glue potting layer, and the high-pressure head connecting piece, the circuit board and the tail end of the metal needle sleeve of the discharge needle are fixedly sealed into a whole, so that spark discharge generated inside is avoided, and the electricity eliminating performance of the alternating-current powder charge eliminating device product is ensured and the explosion-proof safety requirement is met;
the nozzle, the needle seat, the discharge needle, the air supply duct, the air connector seat, the circuit board, the high-pressure head connecting piece, the corresponding fastening part and the epoxy glue encapsulating layer form an ion air eliminator component.
Furthermore, a high-voltage ceramic chip type resistor is arranged on the circuit, 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 correspondingly and electrically connected with the tail end of the metal needle sleeve of the discharge needle.
furthermore, the tail end of the discharge needle is inserted into a metal needle sleeve, and the tail end of the metal needle sleeve is electrically connected with the circuit board.
Specifically, the lower end of the needle base is provided with a connecting seat, and the connecting seat is fixedly connected to the lower end of the needle base through a locking nut of the connecting seat; the connecting seat is fixedly connected to the upper end of the nozzle through a connecting seat nut; the circuit board penetrates through the shell and the opposite side wall surfaces of the needle seat; the high-voltage head connecting piece is connected with an alternating-current power supply through a high-voltage seat and a high-voltage socket; the high-voltage socket is fixedly connected to the high-voltage seat through a high-voltage locking nut; the high-voltage head connecting piece, the high-voltage seat and the high-voltage socket are fixed on the cover at the upper end of the shell.
Furthermore, the longitudinal axis of the oblique base and the longitudinal axis of the powder material conveying pipeline form an included angle of 60 degrees, so that the oblique base or the nozzle is prevented from being blocked by powder in the powder material conveying pipeline.
Specifically, the nozzle, the high-pressure seat, the high-pressure socket and the needle seat are made of insulating plastics.
the technical scheme of the utility model, still provide an exchange powder charge remove device, characterized by:
the alternating current powder charge eliminating device consists of an ion wind eliminator component, a powder charge monitoring component, a pressure monitoring component, an air supply system and a power supply control system;
the powder charge monitoring module is composed of a first charge detector and a second charge detector, when viewed along the flow direction of the conveyed powder material, the first charge detector is arranged at the upstream of a powder conveying pipeline where the ion wind electric eliminator component is arranged, and the second charge detector is arranged at the downstream of the powder conveying pipeline where the ion wind electric eliminator component is arranged;
the pressure monitoring module consists of a flow meter, a pressure meter and an electromagnetic valve which are arranged on an air connecting pipeline between an air supply outlet of the ion wind electricity eliminator and an air supply system;
the air supply system comprises an air source and an air connecting pipeline which leads the air source to an air supply outlet of the ion wind power eliminator;
the power supply control system comprises a power consumption device control cabinet and a remote control cabinet;
the electric eliminator control cabinet is electrically connected with the ionic wind electric eliminator component through the ionic wind electric eliminator power supply; the signal output ends of the first and second charge detectors are respectively and electrically connected with the remote control cabinet through the electric eliminator control cabinet;
The signal output ends of the flow meter and the pressure gauge are respectively and electrically connected with the control cabinet of the electricity eliminator;
The control signal output end of the remote control cabinet is respectively and correspondingly electrically connected with the control end of the electromagnetic valve, the control ends of the first and second charge detectors and the drive control end of the air supply system;
and the control signal output end of the remote control cabinet is also electrically connected with the control end of a discharge ball valve arranged on the powder conveying pipeline at the upstream of the ion wind electric energy absorber component.
Furthermore, the first charge density measuring instrument and the second charge density measuring instrument are oscillation capacitance type powder charge monitors.
Compared with the prior art, the utility model has the advantages that:
1. The high-voltage ceramic chip resistor is used as an energy limiting element of the powder charge eliminator and the eliminator body to prevent corona discharge on the electrode needle from transiting to spark discharge, so that the discharge safety can be ensured, and dust mistakenly entering a discharge cavity or an ion air outlet can be prevented from being ignited due to overlarge discharge energy;
2. by pouring high-voltage electronic pouring sealant, the circuit board, the high-voltage head connecting piece on the circuit board, the high-voltage ceramic chip resistor and the metal sleeve are sealed and fixedly connected by glue, 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. According to the charge values fed back by the first and second charge monitors, the high-voltage output characteristic of the power supply of the powder charge eliminator is regulated and controlled, so that the ion output characteristic of the ion wind eliminator can be timely adjusted according to the electrostatic condition of the powder, and the electricity eliminating efficiency of the powder charge eliminating system is greatly improved.
Drawings
FIG. 1 is a schematic view of the installation structure of the electric heat dissipater body of the present invention on a pipeline;
FIG. 2 is a schematic structural view of the electric fire extinguisher body of the present invention;
fig. 3 is a schematic diagram of a system configuration of the ac powder charge eliminating system of the present invention.
In the figure, 1 is an epoxy glue potting layer, 2 is a circuit board, 2a is a high-voltage ceramic chip resistor, 3 is a high-voltage head connecting piece, 4 is a shell, 5 is a shell cover, 6 is a high-voltage seat, 7 is a high-voltage lock nut, 8 is a high-voltage socket, 9 is a high-voltage cover, 10 is an air connector seat, 10a is an air supply duct, 11 is a discharge needle, 11a is a metal needle sleeve, 12 is a connecting seat locking nut, 13 is a needle seat, 14 is a connecting seat, 15 is a nozzle, 16 is a connecting seat nut, 17 is a connecting screw, 18 is a powder material conveying pipeline, 19 is an inclined base, 20 is a first charge monitor, and 21 is a second charge monitor.
Detailed Description
the present invention will be further explained with reference to the drawings and examples.
In fig. 1 and fig. 2, the technical scheme of the utility model, a exchange powder charge remove device is provided, including circuit board, the electrode needle that is used for producing charged ion and the gas circuit component that is used for blowing charged ion into powder pipeline, characterized by:
a hollow oblique base 19 is arranged on the powder material conveying pipeline 18 along the powder conveying direction;
An included angle smaller than 90 degrees is formed between the longitudinal axis of the oblique base and the longitudinal axis of the powder material conveying pipeline;
a nozzle 15 is arranged on the oblique base and is fixed in the oblique base through a hollow connecting screw 17 to form an ion air outlet;
A needle seat 13 is sleeved at the upper end of the nozzle; a discharge needle 11 is arranged in the needle seat, and at least one air supply duct 10a is arranged on the side surface of the discharge needle; the upper end of the needle base is provided with an air joint seat 10 to form an air supply outlet; the air joint seat, the air supply duct, the nozzle, the inclined base and the powder material conveying pipeline are sequentially communicated with each other through an air path;
A shell 4 is arranged on one side of the needle seat, and a circuit board 2 is arranged in the shell; one end of the circuit board is electrically connected with a high-voltage head connecting piece 3, and the other end of the circuit board is electrically connected with the metal needle sleeve of the discharge needle;
The high-voltage head connecting piece is electrically connected with a power supply;
epoxy glue is filled in the shell and the part for accommodating the circuit board in the needle seat and the periphery of the needle seat in a potting manner to form an epoxy glue potting layer 1, and the high-pressure head connecting piece, the circuit board and the metal needle sleeve of the discharge needle are fixedly sealed into a whole, so that spark discharge is avoided from being generated inside, and the electricity eliminating performance of the alternating current powder charge eliminating device product is ensured and the explosion-proof safety requirement is met;
The nozzle, the needle seat, the discharge needle, the air supply duct, the air connector seat, the circuit board, the high-pressure head connecting piece, the corresponding fastening part and the epoxy glue encapsulating layer form an ion air eliminator component.
Furthermore, a high-voltage ceramic chip type resistor 2a is arranged on the circuit, 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 correspondingly electrically connected with the metal needle sleeve of the discharge needle;
according to the technical scheme, the alternating current powder charge eliminating device prevents corona discharge on the electrode needle from being transited to spark discharge by arranging the high-voltage ceramic chip resistor, ensures discharge safety, and avoids dust entering the ion air outlet by mistake from being ignited due to overlarge discharge energy.
specifically, the tail end of the discharge needle is inserted into a metal needle sleeve 11a, and the tail end of the metal needle sleeve is electrically connected with the circuit board.
A connecting seat 14 is arranged at the lower end of the needle seat and fixedly connected to the lower end of the needle seat through a connecting seat locking nut 12; the connecting base is fixedly connected to the upper end of the nozzle through a connecting base nut 16.
the circuit board is arranged by penetrating through the opposite side wall surfaces of the shell and the needle seat.
The high-voltage head connecting piece is connected with an alternating current power supply through a high-voltage seat 6 and a high-voltage socket 8;
the high-voltage socket is fixedly connected to the high-voltage seat through a high-voltage locking nut 7;
the high-voltage head connecting piece, the high-voltage seat and the high-voltage socket are fixed on a cover 5 at the upper end of the shell.
furthermore, the longitudinal axis of the oblique base and the longitudinal axis of the powder material conveying pipeline form an included angle of 60 degrees, so that the oblique base or the nozzle is prevented from being blocked by powder in the powder material conveying pipeline.
specifically, the nozzle, the high-pressure seat, the high-pressure socket and the needle seat are made of insulating plastics.
When actually assembling and manufacturing the product, the following steps are carried out:
1) The connecting seat nut 16 is screwed on a connecting screw 17 of the pipeline;
2) connecting seat nut 16 fits over connecting seat 14;
3) The connecting seat 14 passes through the shell 4 and is screwed with the connecting seat locking nut 12;
4) The locking nut 12 of the connecting seat is tightly screwed with the needle seat 13;
5) The air joint seat 10 is screwed with the needle seat 13;
6) the top of the air joint seat 10 can be screwed with the quick-release air joint through threads;
7) the bottom of the air joint seat 10 is tightly screwed with the needle seat 13;
8) the high-pressure head connecting piece 3 is screwed into the high-pressure seat 6 by screwing threads;
9) The high-voltage locking nut 7 is sleeved in the high-voltage socket 8;
10) Inserting the high-voltage socket 8 into the high-voltage seat 6;
11) screwing the high-pressure locking nut 7 and the high-pressure seat 6;
12) The high-voltage lead penetrates through a round hole in the top of the high-voltage cover 9 and is electrically connected with the high-voltage head connecting piece 3;
13) Screwing the high-voltage cover 9 and the high-voltage socket 8;
14) The high-pressure seat 6 penetrates through the shell cover 5 and extends into the shell 4;
15) welding the cylinder at the bottom of the high-voltage head connecting piece 3 on the electronic circuit board;
16) a high-voltage ceramic chip type resistor is welded on the electronic circuit board;
17) The other end of the electronic circuit board is welded with a metal needle sleeve, and the discharge electrode is inserted into the metal needle sleeve and is in interference fit with the metal needle sleeve;
18) inserting the electrode needle into the needle base 13 through the groove on the needle base 13;
19) potting epoxy 1 is poured into the housing 4.
In fig. 3, the technical solution of the present invention further provides an ac powder charge removing apparatus, which is characterized in that:
The charge elimination system consists of an ion wind eliminator component, a powder charge monitoring component, a pressure monitoring component, an air supply system and a power supply control system;
The powder charge monitoring module consists of a first charge detector 20 and a second charge detector 21; along the flow direction of the conveyed powder material, the first charge detector is arranged at the upstream of the powder conveying pipeline where the ion wind electric eliminator component is arranged, and the second charge detector is arranged at the downstream of the powder conveying pipeline where the ion wind electric eliminator component is arranged;
the pressure monitoring module consists of a flow meter, a pressure meter and an electromagnetic valve which are arranged on an air connecting pipeline between an air supply outlet of the ion wind electricity eliminator and an air supply system; the flow meter and the pressure gauge are used for transmitting the air pressure value and the flow value in the air supply pipeline to the control cabinet of the electric eliminator in real time; the electromagnetic valve is used for controlling the on-off of the air supply pipeline;
the air supply system comprises an air source and an air connecting pipeline which leads the air source to an air supply outlet of the ion wind power eliminator;
the power supply control system comprises a power consumption device control cabinet and a remote control cabinet;
as can be seen from the figure, the ion wind electricity eliminator components in the technical scheme are uniformly distributed along the circumference of the cross section of the powder material conveying pipeline, and the ion wind electricity eliminator components are arranged at equal central angle intervals.
The electric eliminator control cabinet is electrically connected with the ionic wind electric eliminator component through the ionic wind electric eliminator power supply; the signal output ends of the first and second charge detectors are respectively and electrically connected with the remote control cabinet through the electric eliminator control cabinet;
the signal output ends of the flow meter and the pressure gauge are respectively and electrically connected with the control cabinet of the electricity eliminator;
the control signal output end of the remote control cabinet is respectively and correspondingly electrically connected with the control end of the electromagnetic valve, the control ends of the first and second charge detectors and the drive control end of the air supply system;
And the control signal output end of the remote control cabinet is also electrically connected with the control end of a discharge ball valve arranged on the powder conveying pipeline at the upstream of the ion wind electric energy absorber component.
in the charge elimination system in the technical scheme, an alternating current power supply or a pulse alternating current power supply is used 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 an 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.
before the 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 the electric consumer; 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 discharging ball valve is started, and the powder materials start to be pneumatically conveyed.
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 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.
As can be seen from the above, in the present embodiment:
1. the power supply of the electric eliminator adopts an alternating current power supply or a pulse alternating current power supply;
2. the output voltage of the power supply of the electricity eliminator can be adjusted in high and low or voltage output duty ratio and frequency;
3. high-voltage generating components and high-voltage elements in the alternating-current power supply or the pulse alternating-current power supply are encapsulated by high-voltage electronic pouring sealant;
4. a circuit board in the electricity eliminator body is welded with a high-voltage ceramic chip type resistor, the resistance value is 100 MOmega to 200 MOmega, and the power is 1 to 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 metal needle sleeve;
6. The electrode needle is in interference fit with the metal needle sleeve;
7. the high-voltage ceramic chip type resistor, the high-voltage head connecting piece and the metal needle sleeve 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. The installation angle between the ion air outlet of the electricity eliminator body and the electricity eliminating pipeline is smaller than 90 degrees, so that the powder is prevented from blocking the ion air outlet of the electricity eliminator;
10. 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;
11. the airflow pressure at the air outlet of the ion wind power generation and dissipation device is always larger than the airflow pressure in the power generation and dissipation pipeline, so that the powder is prevented from flowing back into the power generation and dissipation device body, and the air outlet of the power generation and dissipation device is prevented from being blocked by the powder.
in FIG. 3, the circles marked with "+", "-" indicate particles with positive or negative charges, which is used for customary labeling 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.
before the 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 the electric consumer; 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).
according to the technical scheme, through the control process, the static electricity is monitored and eliminated remotely, in real time and on line in the pneumatic conveying process of the industrial powder effectively, operators are facilitated, and the production safety is guaranteed.
therefore, divide from general, the technical scheme of the utility model includes:
A. the power supply technical scheme is as follows:
In order to simplify the structural design of the ion wind eliminator, an alternating current power supply or a pulse alternating current power supply is adopted. Adjusting the output voltage or the voltage output duty ratio and frequency according to the charge density measured by the first charge monitor; 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.
B. the structural design scheme of the electric eliminator is as follows:
The electric eliminator body is independently designed, the electric eliminator is universal on pipelines with different diameters, the electric eliminator is convenient to manufacture and use, and the efficiency is improved. The air outlet of the electricity eliminator body and the electricity eliminating pipeline are arranged at an angle, so that powder is prevented from blocking the ion air outlet of the electricity eliminator.
C. The technical scheme of the control system of the ionic wind pipeline powder static eliminator is as follows:
C1, control system composition:
the control system mainly comprises a powder charge monitoring system, a pressure monitoring system, an air supply system and a power supply control system.
the charge density measurement in the on-site pipeline adopts two oscillation capacitor type powder charge monitors, and the two 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.
C2, control process overview:
Before the 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 the electric consumer; 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 charge monitors 1 and 2 to work, the discharging 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).
the process effectively realizes the remote, real-time and on-line monitoring and elimination of static electricity in the pneumatic conveying process of industrial powder, facilitates the operation personnel and ensures the production safety.
After the technical scheme is implemented, the following beneficial effects can be produced:
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, the ion air outlet cannot be blocked by powder, and the use safety is ensured;
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.
4) the electric eliminator body is independently designed, the electric eliminator is universal on pipelines with different diameters, the electric eliminator is convenient to manufacture and use, and the efficiency is improved. The air outlet of the electricity eliminator body and the electricity eliminating pipeline are arranged at an angle, so that powder is prevented from blocking the ion air outlet of the electricity eliminator;
5) the structural design of the electricity eliminator (the body and the electricity eliminating pipeline) is further optimized, the blockage by powder can be avoided, and the safety is improved; an independently designed electricity eliminator body is adopted, and an energy limiting element is added to the electricity eliminator body; and a monitoring device of the control system is added, so that the use safety and reliability are further improved.
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 utility model discloses can extensively be used for the design, the manufacturing field of powder conveying system neutralization apparatus.
Claims (8)
1. the utility model provides an exchange powder charge remove device, is including the circuit board, the electrode needle that are used for producing charged ion and the gas circuit component that is used for blowing charged ion into powder pipeline, characterized by:
A hollow oblique base is arranged on the powder material conveying pipeline along the powder conveying direction;
an included angle smaller than 90 degrees is formed between the longitudinal axis of the oblique base and the longitudinal axis of the powder material conveying pipeline;
A nozzle is arranged on the oblique base and fixed in the oblique base through a hollow connecting screw to form an ion air outlet;
A needle seat is sleeved at the upper end of the nozzle; a discharge needle is arranged in the needle seat, and at least one air supply duct is arranged on the side surface of the discharge needle; the upper end of the needle seat is provided with an air joint seat to form an air supply outlet; the air joint seat, the air supply duct, the nozzle, the inclined base and the powder material conveying pipeline are sequentially communicated with each other through an air path;
A shell is arranged on one side of the needle seat, and a circuit board is arranged in the shell; one end of the circuit board is electrically connected with a high-voltage head connecting piece, and the other end of the circuit board is electrically connected with the tail end of the metal needle sleeve of the discharge needle;
The high-voltage head connecting piece is electrically connected with an alternating current power supply;
The part for accommodating the circuit board in the shell and the needle seat and the periphery of the needle seat are filled with epoxy glue in a potting way to form an epoxy glue potting layer, and the high-pressure head connecting piece, the circuit board and the tail end of the metal needle sleeve of the discharge needle are fixedly sealed into a whole, so that spark discharge generated inside is avoided, and the electricity eliminating performance of the alternating-current powder charge eliminating device product is ensured and the explosion-proof safety requirement is met;
the nozzle, the needle seat, the discharge needle, the air supply duct, the air connector seat, the circuit board, the high-pressure head connecting piece, the corresponding fastening part and the epoxy glue encapsulating layer form an ion air eliminator component.
2. the ac powder charge eliminator according to claim 1, wherein a high voltage ceramic resistor is disposed on said circuit, one end of said high voltage ceramic resistor is electrically connected to said high voltage connector, and the other end of said high voltage ceramic resistor is electrically connected to the end of said discharge needle sleeve.
3. the ac powder charge eliminator according to claim 1 or 2, wherein the end of said discharge needle is inserted into a metal needle sheath, and the end of said metal needle sheath is electrically connected to the circuit board.
4. the alternating current powder charge eliminating device according to claim 1, wherein a connecting seat is arranged at the lower end of the needle seat, and the connecting seat is fixedly connected to the lower end of the needle seat through a locking nut of the connecting seat; the connecting seat is fixedly connected to the upper end of the nozzle through a connecting seat nut; the circuit board penetrates through the shell and the opposite side wall surfaces of the needle seat;
the high-voltage head connecting piece is connected with an alternating-current power supply through a high-voltage seat and a high-voltage socket;
the high-voltage socket is fixedly connected to the high-voltage seat through a high-voltage locking nut;
The high-voltage head connecting piece, the high-voltage seat and the high-voltage socket are fixed on the cover at the upper end of the shell.
5. the ac powder charge eliminator device according to claim 1, wherein the longitudinal axis of said slanted base makes an angle of 60 ° with the longitudinal axis of the powder material conveyor line to avoid blockage of the slanted base or nozzle by powder in the powder material conveyor line.
6. the ac powder charge eliminator according to claim 1, wherein said nozzle, high voltage socket and pin base are made of insulating plastic.
7. an alternating current powder charge eliminating device is characterized in that:
the alternating current powder charge eliminating device consists of an ion wind eliminator component, a powder charge monitoring component, a pressure monitoring component, an air supply system and a power supply control system;
the powder charge monitoring module is composed of a first charge detector and a second charge detector, when viewed along the flow direction of the conveyed powder material, the first charge detector is arranged at the upstream of a powder conveying pipeline where the ion wind electric eliminator component is arranged, and the second charge detector is arranged at the downstream of the powder conveying pipeline where the ion wind electric eliminator component is arranged;
The pressure monitoring module consists of a flow meter, a pressure meter and an electromagnetic valve which are arranged on an air connecting pipeline between an air supply outlet of the ion wind electricity eliminator and an air supply system;
the air supply system comprises an air source and an air connecting pipeline which leads the air source to an air supply outlet of the ion wind power eliminator;
The power supply control system comprises a power consumption device control cabinet and a remote control cabinet;
the electric eliminator control cabinet is electrically connected with the ionic wind electric eliminator component through the ionic wind electric eliminator power supply; the signal output ends of the first and second charge detectors are respectively and electrically connected with the remote control cabinet through the electric eliminator control cabinet;
The signal output ends of the flow meter and the pressure gauge are respectively and electrically connected with the control cabinet of the electricity eliminator;
The control signal output end of the remote control cabinet is respectively and correspondingly electrically connected with the control end of the electromagnetic valve, the control ends of the first and second charge detectors and the drive control end of the air supply system;
and the control signal output end of the remote control cabinet is also electrically connected with the control end of a discharge ball valve arranged on the powder conveying pipeline at the upstream of the ion wind electric energy absorber component.
8. the ac powder charge eliminator of claim 7, wherein said first and second charge density meters are oscillating capacitor powder charge monitors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277863.XU CN209767897U (en) | 2018-12-30 | 2018-12-30 | Alternating current powder charge eliminating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277863.XU CN209767897U (en) | 2018-12-30 | 2018-12-30 | Alternating current powder charge eliminating device |
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| CN209767897U true CN209767897U (en) | 2019-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688683A (en) * | 2018-12-30 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of exchange powder charger-eliminator and powder conveying pipeline charge eliminate system |
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2018
- 2018-12-30 CN CN201822277863.XU patent/CN209767897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109688683A (en) * | 2018-12-30 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of exchange powder charger-eliminator and powder conveying pipeline charge eliminate system |
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