Froth pumps are the latest generation of foam pump/froth pump based on the advanced technology at home and abroad, including Foam Tank Froth Slurry Pump, High Pressure Slurry Pump. It could eliminate the foam/froth in the slurry in running and work normally even if the feeding slurry is not enough. Froth pump is the ideal products to deliver the frothy slurry, especially in the flotation technique process.
Slurry Froth Pump,Froth Foam Pump,Centrifugal Froth Pump,Foam Tank Froth Slurry Pump,
High Pressure Slurry Pump Shijiazhuang Boda Industrial Pump Co., Ltd. , https://www.mineralslurrypump.com
One of the most important explosion-proof principles of LED explosion-proof lighting is the confinement and blasting gases, the appearance of shells touched by blasting dust, the temperature of components and appearances, and the appearance of electronic components. The temperature of the outer surface of the electronic touch panel is lower than the minimum point temperature. Or light the temperature. Led explosion-proof lights for outdoor use require a waterproof drive. The use of led explosion-proof lights in gas stations need shockproof!
Since the LED is classified as a solid-state cold light source, it has the advantages of high electro-optical conversion efficiency, small heat generation, low power consumption, low operating voltage, safe voltage, long service life, and low energy consumption; therefore, high-power white LEDs are explosion-proof lamps, especially An ambitious electric light source for portable explosion-proof lamps.
LED explosion-proof light, patented road sealing skills; more in line with national explosion-proof new skills. Into a special type of occupational top electrical equipment, the lighting problem is mainly dealt with. It consists of a lamp housing, a lamp shade arranged at the front end of the lamp housing, a luminous body and a battery arranged inside the lamp housing, and a switch arranged on the outer surface of the lamp housing. : The luminous body is a high-power LED module, and a wide voltage input driving circuit is arranged between the luminous body and the battery; the wide voltage input driving circuit includes a constant current chip, and the constant current chip and the battery constitute a power module, and the LED module is connected. On the constant current chip, the power module and the LED module are sealed together; the lamp housing and the lamp housing are ultrasonically welded.
It uses the characteristics of LED low heat, to complete the explosion-proof real-level safety, and the long life of LED light source; the battery in the fully charged and discharged LED persists stable brightness; set the heat sink on the lamp shell, can complete the use of LED module The heat dissipation ensures the stability of the application and is applicable to many kinds of occupational lighting such as coal mines, petroleum, railways and flood control.
Applicable to Zone 1 and Zone 2 risk situations, Class IIA, IIB, and IIC explosive gas atmospheres.
Applicable to risk areas in Zone 0 and Zone 21, explosive gas atmospheres of Class IA, IB, and IC.
The example LED explosion-proof channel lights are suitable for cooperative fixed lighting of petrochemical devices, oil channels, gas stations, oil pump rooms, transfer stations, oil fields and other inflammable and explosive fields.
Explosion-proof symbol: ExdIIBT6, ExdIICT4, Gb protection class: IP66, IP67.
Features:
â– Lighting fixtures share the same light, illuminate the scale with uniform illumination, shine the point of view up to 220 degrees, and fully utilize the light; the light is soft and there is no glare, and the eyes of the operator are not exhausted, and the working efficiency is improved.
â– The light source uses the brightest LED in the world, and the power consumption is only 40% of the metal halide lamp.
â– The power critical components are all selected by international cutting-edge brands, which are highly efficient and stable.
â– Use common heat dissipation structure, use heat transfer heat conduction method to speed up heat conduction, effectively ensure LED heat dissipation, so that LED life can reach 100,000 hours.
â– The explosion-proof type has the highest explosion-proof rating and can be used in various occupational flammable and explosive situations.
â– can be connected to the line, eliminating the need for junction box and device costs.
â– The outer shell is made of high-tech exterior coating technology, which is resistant to abrasion, water and dust, and suitable for various harsh environments.
â– When the explosion-proof lamp is used as a flood light, a spotlight cover is added outside the light source to increase the brightness of the cast light.
â– led explosion-proof lights to do the use of explosion-proof lights distillery: Should be sealed area planning; flameproof type of real security; protection class IP65, anti-corrosion grade WF1, so that waterproof, dustproof, explosion-proof.
â– Use of explosion-proof lamps to make oil-field explosion-proof lights: Should use anti-drop ring planning; make the oil field derrick has a sensation to prevent the lamp from falling due to bolts, but with fall protection ring protection will not fall.
â– Examine the specification of the explosion-proof lamp led by the fire inspection.
Primary skill parameters:
Input voltage scale AC90～264V
Output voltage scale DC36~48V
Frequency range 47 to 63Hz
Anti-corrosion grade WF2
Insulation class I
Distance to height ratio 3.5
Inlet thread G3/4′′
Imported cable Φ8mm～Φ14mm
Dimensions Φ240×220mm
Net amount 5kg
With light source:
Number with light source power (W)
Luminous flux (lm)
25
led
25
2000
40
led
40
3200
60
led
60
4800
Explosion-proof structure Explosion-protected explosion-proof lamps are explosion-proof. According to the regional scale and scale of blasting gas environment, it is necessary to use explosion-proof lamps in the area of ​​zone 1. The fixed lamps in zone 2 can be flameproof and increased safety. Movable lights have to be flameproof. The grade or group of explosion-proof lamps selected should not be lower than the explosive mixture rating and group in blast risk environments. At the same time, the impact of the environment on the explosion-proof lamps must be taken into consideration, and the requirements for various environments such as ambient temperature, air humidity, corrosion, or contaminating substances should be met. According to different environmental requirements, the lighting protection level and corrosion protection level should be selected. Especially in the presence of corrosive gases in a blasting gas environment, it is crucial to select luminaires with corresponding corrosion protection.
In petrochemical companies, lighting fixtures for blasting applications are primarily flameproof. With the increasing use of increased safety equipment in the explosion risk area of ​​Zone 2, increased safety and composite lighting fixtures are also being used. The increased safety type lamps and lanterns have a certain explosion-proof function. Compared with the explosion-proof lamps, they have the advantages of light weight, low price, convenient device protection and long service life. The most widely used composite electrical equipment used by petrochemical companies is the Zengan-explosion-proof compound type explosion-proof electrical equipment, which is usually composed of explosion-proof parts, increased safety terminal blocks and increased safety enclosures. It is not only flameproof but also safe. Functionality, but also has the advantages of increased safety.
Line clarification 1. Positioning selection should be laid in the direction of the blasting risk is relatively small or the release of the source of the relatively long distance lay electrical lines.
2. Laying method Selection of blasting risk The electrical lines in the environment are mainly explosion-proof steel pipe wiring and cable wiring.
3ã€. Blocking the channel of the sealed electrical wiring and the protection pipe, cable or steel pipe When passing through the partition or floor between the areas where the blasting risk environment is not the same, use non-combustible data to close the block.
4. Selection of blasting data for wire material risk Within the scope of environmental risk level 1 zone, distribution lines should use copper conductors or cables. Multiple stranded copper core cords or stranded copper core cables should be used where there is severe vibration. Aluminum core power cables must not be used in coal mines.
Blasting Risk Within the scope of the Environmental Risk Level 2 zone, an aluminum core conductor or cable with a cross-sectional area of ​​4 mm2 and above shall be used for the power line, and the cross-sectional area of ​​2.5 mm2 may be used for the lighting circuit. And above aluminum conductors or cables.
5. The selection of the section of the insulated conductor and the section of the cable in zone 1 and zone 2 shall be allowed. The conductor shall not allow the ampacity to be less than 1.25 times the extra current of the fuse melt and the current setting of the circuit breaker long delay overcurrent release. The permitted ampacity for the branch line leading to the low-pressure cage induction motor should not be less than 1.25 times the extra current of the motor.
6. The electrical connection of the center of the electrical circuit in zone 1 and zone 2 must be within the proximity of the explosion-proof junction box or splice box that is compatible with the risk environment. Flameproof junction boxes should be used in Zone 1 and increased safety junction boxes in Zone 2.
When using aluminum core cables or conductors in the electrical circuits in Zone 2, it is necessary to have a reliable and accurate installation and repair.
The nameplate symbolizes the explosion-proof symbol.
B basic symbol: contains the product title, type, manufacturer name, registered trademark, date of manufacture and so on.
C functional safety symbol: contains additional voltage, current, nominal frequency, power and quantity of light source, environment temperature is allowed (this scale is only -20～+40°C), specific applicable environment symbol (for example only applies to certain A product of a blasting gas mixture shall be marked with the name or molecular formula of combustible gas, and the classification symbol of the luminaire (such as "digital").
D Explosion-proof certification number, to prove that the goods have been officially tested by the explosion-proof inspection station. Some products have the “x†symbol after the explosion-proof certificate number, which indicates that the product can only be used under certain special conditions of safe use. The specified conditions should be clearly and clearly marked in the lamp housing or commodity description.
D additional clarification. In addition to the above symbols, the specific clarifications necessary to ensure accurate installation, use, and repair should be given on the luminaire, on the ballast installed in the interior, or in the manufacturer's product elucidation book supplied with the luminaire. E.g:
A Explosion-proof luminaire's operation orientation, some explosion-proof luminaires only promise to use the device in a certain position or within a certain point of view. This is due to the change of the work pull, the heat spread of the explosion-proof luminaires and the highest external temperature will change. Therefore, the most important factor in the operation of explosion-proof lamps is to control the highest surface temperature and prevent it from exceeding the temperature group symbolized by the explosion-proof lamps. In addition, the change of homework orientation will also affect the lifespan and function of some light sources, and will affect the lighting insulation data, electrical components, insulated functions of different wires, and the number of life. Therefore, it is necessary to clearly clarify the explosion-proof lamp with restrictions on the orientation of the device.
B is the highest surface temperature of the declining explosion-proof lamps and the descending commodity temperature grouping grade. The explosion-proof lamps that are planned to use special standard light sources must indicate the title, type, shape and scale of the light source, and the manufacturer. If not stated, when the user switches to another bulb with the same power, the maximum external temperature of the explosion-proof lamp may exceed the ignition temperature of the explosive gas mixture in the bad environment, which constitutes the blasting risk.
C. Under the most unfavorable conditions of normal operation, the insulation data of the power cables or conductors are subjected to the highest temperature in the luminaire and should be marked if exceeding 80t in order to match the corresponding cables and wires. When there is a special request for the introduction of cables or wires, the standard, type and applicable temperature must be indicated.
D The luminaire with battery must clarify the battery's type, nominal voltage and nominal capacity to avoid losses and risks.
E Explosion-proof luminaires with spotlight and similar functions should be marked with the shortest distance from the object to be illuminated in order to prevent the objects being burned and burned.
F additional ballast coil operating temperature tω (C), the capacitor's maximum operating temperature tc (C), wiring diagram 5
Equipment protection Explosion-protection lights must be checked from the nameplate and product description before the installation: Explosion-proof type, type, grade, group; degree of protection of the enclosure; fastener requirements for the device method and device. The device of explosion-proof lamp shall be fixed and reliable, the fastening bolt shall not be replaced arbitrarily, and the spring washer shall be completely. Dust-proof, waterproof sealing device should be placed as it is. When the cable enters the line, the cable and the sealing gasket must be closely matched. The section of the cable should be round, and the appearance of the jacket should not have defects such as height and lowness. The remaining inlets shall be sealed in an explosion-proof type, coated with a 201-type replacement rust preventive oil, and tighten the compression nut so that the inlet opening is sealed. Led explosion-proof lights in the area where there is a strong sensation, the use of anti-drop ring to prevent the light falling.
Matters needing attention 1. Regularly eliminate dust and grime on the explosion-proof lamp housing, and improve the efficacy and heat dissipation of the lamp. The cleaning method can be based on the protection of the lamp housing, use water spray (on the lamp symbolizes overcast) or use a damp cloth. When the water spray is cleaned, the power supply should be blocked. It is forbidden to use a dry cloth to wipe the plastic cover (clear parts) of the lamp to avoid static electricity.
2. Check whether there are traces of foreign matter impact on the transparent parts, whether there is any loosening, desoldering or corrosion of the protective net. If any, stop using it and repair and replace it in time.
3. The light source should be turned off in a timely manner to tell the light to be replaced, so as to prevent the ballast and other electrical components from being in an abnormal condition for a long time because the light source cannot be started.
4. If there is accumulated water in the cavity of lamps and lanterns used in the wet environment, it should be eradicated in time and replace the sealing parts to ensure the protective function of the outer shell.
5. When opening the lamp cover, please press the warning board to request and open the cover after the power is turned off.
6. After opening the cover, check the explosion-proof contact surface. Is the rubber seal hardened or sticky? Is the wire insulation green and carbonized? Is the insulation and electrical components deformed and burnt? If these doubts are found, they should be promptly repaired and replaced.
7. Before using the cover, use a damp cloth (not too hot and wet) to lightly return the light to the light and the bright parts to improve the efficacy of the light. A layer of 204-1 displacement rust preventive oil should be applied thinly on the flameproof contact surface. When closing the cover, it should be noted whether the sealing ring plays a sealing role in the original orientation.
8. Some of the luminaire seals should not be frequently disassembled and opened. Patent zone road sealing skills; more in line with national explosion-proof new skills.
Features of Foam/Froth Pumps
1. On the bearing house, there is the motor base or motor support, which helps adopt belt drive or direct drive. It is very convenient to change the pulleys to adjust the speed and meet the changes of the work conditions.
2.The box is made of steel, stainless steel or rubber lined steel. It has the feeding suction and overflow box in the tangent line. The overflow box could deliver the surplus slurry back to the pool. The feeding suction in the tangent line could transport the slurry fast and eliminate part of the froth.
3. Froth pumps are of double-casing. The materials of the wet parts could be metal alloy, rubber or other non-metal material according to the slurry properties.
Application of Froth Pumps
It is used widely in the metallurgy, minerals, coal washery, chemical and other industrial departments, suitable for handing the abrasive and corrosive slurry with the froth.
LED explosion-proof lamp is a type of explosion-proof lamp. Its principle is the same as that of explosion-proof lamp except that the light source is an LED light source. It is adopted in order to avoid the use of surrounding explosive mixtures such as blasting gas atmosphere, blasting dust environment, gas gas, etc. The various specific ways of lighting. LED explosion-proof light is currently the most energy-saving explosion-proof lighting, widely used in oilfield - power plant - chemical plant - oil - *.