In-depth Demand Report | Disassembling Slurry Pumps Manufacturer

　　Do these tasks well to improve the safety of centrifugal slurry pumps　　Centrifugal slurry pumps are energy-saving, single-stage, single-sucking, cantilever centrifugal pumps, used to transport abrasive or corrosive slurry containing solid particles.Centrifugal slurry pumps are widely used in electricity, mining, metallurgy, coal, building materials, chemical industry, food, water conservancy and sewage treatment industries.When a general impurity pump conveys a slurry, its efficiency always decreases, and the higher the concentration, the larger the particle size, and the greater the reduction.When the centrifugal slurry pump conveys the slurry, its efficiency is generally higher than that of clean water.This is because the hydraulic design of the centrifugal slurry pump is designed with a solid-liquid two-phase flow field, which is more suitable for the conveying of slurry for the conveying of clean water and slurry.With this reduction and increase, the operating efficiency of the centrifugal slurry pump has been increased by 3~10%.Therefore, centrifugal slurry pumps have new energy conversion rules.When an impurity pump conveys slurry, the main thing that occurs in solids is impact wear, and the cavitation performance of the water pump deteriorates with the increase of flow.The flow channel design of the centrifugal slurry pump conforms to the change law of the solid flow field. The solid moves along the impeller line. The impeller mainly occurs in friction and wear. The cavitation performance of the pump changes relatively smoothly as the flow rate increases, so the centrifugal slurry pump has a new wear law.Under the same conditions, the service life of the centrifugal slurry pump is 1 to 3 times longer than that of the general impurity pump.For general impurity pumps, their performance gradually deteriorates as the slurry concentration increases.The hydraulic design of the centrifugal slurry pump fully takes into account the movement of solids (including concentration, particle size, shape, etc.), and still has good hydraulic performance when transporting high concentration (general weight concentration \u0026gamma;G can reach 60~70%) slurry, meeting the high concentration requirements of the process flow.Therefore, centrifugal slurry pumps are suitable for the requirements of conveying high-concentration slurry.Please use your centrifugal slurry pump safely: 1. Inspection before the centrifugal slurry pump is running 1) Check that the rotation direction of the motor is consistent with the rotation direction specified by the centrifugal slurry pump (please refer to the corresponding model manual).When testing the rotation direction of the motor, the motor should be tested separately and must not be connected with the pump.2) Check whether the elastic pad in the coupling is complete and correct.3) Check whether the rotation of the motor shaft and the centrifugal slurry pump are concentric.4) The pump should not be tight or friction when using a hand-drawn car (including motor).5) Check whether bearing oil is added to the bearing box to the position indicated by the oil mark.6) Before starting the centrifugal slurry pump, the shaft sealing water must be opened (mechanical sealing is cooling water), and the inlet valve of the centrifugal slurry pump must be expanded and the outlet valve of the pump must be closed.7) Check whether the valve is flexible and reliable.8) Others, such as anchor bolts, flange seals and bolts.Whether the pipeline system, etc. are installed correctly, firm and reliable.2. Start-up and operation of the centrifugal slurry pump and monitor: 1) Before starting the centrifugal slurry pump, the pump inlet valve should be opened and the pump outlet valve should be closed.Then start the pump, and then slowly start the pump outlet valve after the centrifugal slurry pump is started. The size and speed of the pump outlet valve should be controlled by the fact that the pump does not vibrate and the motor does not exceed the rated current.2) The start of the series pump also follows the above method.After opening the first-stage pump, you can open the outlet valve of the last-stage pump a little (the opening size should be 1/4 of the rated current of the first-stage pump), and then start the second-stage three-stage pump one after another. After all the series pumps are started, the outlet valve of the large last-stage pump can be gradually opened. The speed of the valve opening should be controlled by the fact that the pump does not vibrate and the motor of either stage pump exceeds the rated current.3) The centrifugal slurry pump mainly aims to transport flow, so a meter is installed in the operation monitoring system to monitor whether the flow meets the requirements at any time; in the pipeline system, slag flushing system, and filter pressing and dewatering system equipped with cyclone, it is also required that there be a certain pressure at the pipeline outlet.Therefore, a pressure gauge should also be installed in such a system to monitor whether the pressure meets the requirements.4) In addition to monitoring the flow and pressure during operation, the centrifugal slurry pump must also monitor the motor not to exceed the motor's rated current.Monitor whether oil seals, bearings, etc. are conducting normal conduction at any time, whether centrifugal slurry pumps have evacuated or overflowed pools, etc., and deal with them at any time.

Why does the current of a centrifugal slurry pump have too high? Centrifugal slurry pump is an auxiliary equipment for ore dressing plants. Generally, centrifugal slurry pumps are used for those who require pressure feeding.In a beneficiary dressing plant, what problems will occur if the centrifugal slurry pump is used improperly?What impact will it cause?1. Generally, the bearings of the centrifugal slurry pump are lubricated and cooled by dilute oil, and the oil is also cooled by a built-in surface cooler. The cooler material is pure copper tube, and the cooling medium is circulating water.When the surface of the cooler pipe wall is fouled, it will cause poor heat transfer and lead to poor cooling effect.Therefore, it is necessary to check whether the cooling water pressure and flow rate of the centrifugal slurry pump are suitable. Generally, the cooling water pressure of the centrifugal slurry pump is 0.05-0.2MPa and the cooling water flow rate is 1-3m/h. Change the scaling cooler in time, turn on the cooling water before the pump starts and adjust the pressure to the specified value, check the bearing temperature rise (35%) regularly, and the temperature must not be greater than 75%.2. During use, the centrifugal slurry pump fails due to packing wear, and the slurry leaks along the shaft seal. The slurry instantly fills the semicircular positioning hole curve of the bracket and the rear pump shell. The slurry discharged from the discharge port can not have time to seal into the oil pool through the water barrier plate, or the cooler welding joint is not welded, and water enters the oil pool, contaminating the working oil in the bracket oil pool, causing damage to the bearing of the centrifugal slurry pump.The reasons for the high current of the centrifugal slurry pump are as follows: Situation A: The relative density and viscosity of the process medium exceed the index.Solution: Check whether the material components so that their viscosity and relative density match the design value, and adjust it by the process operator.Situation B: Electrical failure.Solution: Check the setting value of the circuit breaker heater, check the voltage, the three-phase current should be balanced, and the error should not be greater than 3%.Situation C: When the centrifugal slurry pump is started, the outlet valve is fully opened, and the resistance in the outlet pipeline is too small.Solution: Close the outlet valve, slowly open the outlet valve after the centrifugal slurry pump is started.I believe that after you understand the reasons for the high current of the centrifugal slurry pump, you will be more helpful to us in the future use of the centrifugal slurry pump and will also bring us greater benefits.

　　How important is the correct use of sewage pumps? Just look at it. The correct use of sewage pumps is very important, because only by correct operation can we ensure that the normal-used sewage pump will not have any faults. At the same time, it also ensures the smooth operation of sewage pumps. So what are the precautions for the use of sewage pumps? Let’s take a look together! There are about eight precautions for the use of sewage pumps: 1. If there are any minor failures in sewage pumps, remember not to let them work.If the filler* of the pump shaft should be added in time after it wears, it will leak if the pump continues to use.The direct impact of this is that the motor energy consumption will increase and thus damage the impeller.2. If the sewage pump vibrates strongly during use, you must stop and check what the reason is, otherwise it will also cause damage to the water pump.3. When the bottom valve of the sewage pump leaks, some people will fill it with dry soil into the inlet pipe of the water pump and rinse it with water to the bottom valve. This is really undesirable.Because when dry soil is put into the water inlet pipe and the water pump starts to work, the dry soil will enter the pump, which will damage the water pump impeller and bearing, which will shorten the service life of the water pump.When the bottom valve leaks, it must be used for repair. If it is very serious, it needs to be replaced with a new one.4. Be sure to pay attention to maintenance after use of the sewage pump. For example, when the water pump is used up, the water in the water pump should be cleaned, and the water pipe can be removed and then rinsed with clean water.5. Remove the tape from the sewage pump, then rinse it with water and then dry it in a light place. Do not place the tape in a dark and humid place.The water pump tape must not be stained with oil, and do not apply sticky things on the tape.6. Carefully check whether there are cracks on the impeller, whether there is looseness on the bearing when the impeller is fixed to the bearing. If there are cracks and looseness, repair it in time. If there is soil on the impeller of the sewage pump, clean it up.7. The interface between the water pump and the pipeline must be sealed, because if debris enters, it will cause damage to the inside of the sewage pump.8. The bearings on the sewage pump are also the focus of inspection. After use, check whether the bearings are worn. If the water pump is used for a long time, the small balls in the bearing will break. Therefore, after the water pump is used, a layer of lubricating oil should be applied to the bearing to better protect the water pump bearing.The above are precautions for use. Of course, if you want to know more about the precautions for the use of sewage pumps, you should consult the after-sales service department. They will solve the problem quickly and conveniently. Of course, if there are product needs for sewage pumps, online customer service will help you in time.

Common knowledge of disassembly and assembly and installation of slurry pumps is a common knowledge that users must know. In order to facilitate everyone to understand and use this type of product, today the editor has edited and summarized some common knowledge of disassembly and assembly and installation of slurry pumps.　　1. Common knowledge about slurry pump disassembly 1. Disassembly and assembly of the pump head part: The disassembly and assembly and clearance adjustment of the pump head part should be carried out in accordance with the diagram. The impeller, sheath, rear guard plate, and sealed box are all equipped with lifting tools for disassembly and assembly (lifting tools need to be ordered separately to purchase).2. Shaft seal part: The disassembly and assembly of the filler shaft should be carried out in accordance with the drawing. In order to ensure the sealing effect of the filler shaft seal, the shape of the filler opening should be cut as much as possible as possible as possible as possible as possible. When loading into the filler box, the openings of the adjacent filler should be staggered by 108 degrees.　　2. Maintenance is one of the very important things. Here is a very important matter. The maintenance of the slurry pump is introduced to you: 1. The bearing water pressure and water volume must meet the regulations. Adjust the tightness of the filler at any time and do not cause the shaft seal to leak slurry.And replace the sleeve in time.2. When replacing the bearing, be sure to ensure that the bearing assembly is free of dust and the lubricating oil is clean. The bearing temperature is generally not exceeding 60-650C when the pump is running, and the maximum is not exceeding 750C.3. Ensure the coaxiality between the motor and the pump, ensure that the elastic pad in the coupling is complete and correct, and should be replaced in time after damage.4. Ensure that the pump components and pipeline systems are installed correctly, firmly and reliably. 5. Some components are consumable parts. In daily use, pay attention to the loss of consumable parts and repair or replace them in a timely manner.During the repair or replacement of consumable parts, it is necessary to ensure that the assembly is correct, the clearance is adjusted reasonably, and to avoid the occurrence of tight friction.6. The suction pipeline system must be free of air leakage. At the same time, pay attention to whether the suction inlet is blocked during operation.The medium required for the slurry pump is mostly solid particles, so the barrier placed in the pump tank should meet the requirements of the particles that can pass through, reducing the possibility of excessively large particles or long fiber materials entering the pump body and causing clogging.3. Installation and use knowledge　Slurry pumps are widely used in chemical industries such as petrochemicals, coal chemicals, etc., transport liquids of different properties and provide the pressure and flow rate required for chemical reactions.There are many types, and according to the properties of the conveying medium, they can be divided into acid pumps, alkali pumps, clean water pumps, mud pumps, etc.The working temperature and working pressure of the conveying medium are different, so it effectively extends the service cycle and reduces the amount of maintenance, which plays a great role in improving the economic benefits of the factory.1. Selection and installation The slurry pump should be selected according to the liquid conveyed, and the required performance should be checked, the suction and discharge conditions should be analyzed, whether it is intermittent or continuous operation, etc.Usually operated under pressure and flow conditions close to the manufacturer's design.The following review should be conducted during installation: (1) The size, position and elevation of the foundation should meet the design requirements, the anchor bolts must be properly and correctly fixed in the concrete foundation, and the machine should not have any missing parts, damage or rust; (2) According to the characteristics of the conveyed medium, the materials of the main parts, shaft seals and gaskets should be checked if necessary; (3) The correcting work should comply with the provisions of the equipment technical documents. If there is no provision, it should comply with the provisions of the current national standard \"General Specifications for the Construction and Acceptance of Mechanical Equipment Installation Projects\"; (4) All pipelines connected to the slurry pump body, pipe fittings, and the cleaning requirements of lubricating oil pipelines should comply with the provisions of relevant national standards.2. Use The trial operation of the pump should meet the following requirements: (1) The steering of the drive machine should be the same as that of the pump; (2) Inspect the steering of the pipeline pump and the coaxial pump; (3) The fixed connection parts should not be loose, and the specifications and quantity of lubricant added to each lubricating part should comply with the provisions of the equipment technical documents; (4) Parts with prelubricating requirements should be prelubricated in accordance with the regulations; (5) Each indicator instrument should be installedThe full protection device should be sensitive, accurate and reliable; (6) The wheel should be flexible and no abnormal phenomena; (7) The pump body should be preheated before trial operation, the temperature should rise evenly, and the temperature rise should not be greater than 500℃ per hour; the temperature difference between the surface of the pump body and the process pipeline with the inlet of working medium should not be greater than 4090; (8) The slurry pump is equipped with a connecting device to eliminate the influence of temperature rise, and a bypass connection device should be set to provide cooling water source.