Import center grinder operation need to pay attention to several points
Imported internal grinder operation need to pay attention to several points: 1, imported internal grinder must comply with the safe operation of mechanical cutting procedures. 2, the workpiece before processing, should be based on the workpiece material, hardness, precision, rough grinding and so on, a reasonable choice of the appropriate wheel. 3, change the wheel, according to the safety of grinding wheel operating procedures. You must carefully check the wheel size and line speed meets the...
Hydraulic cylinder malfunction reasons
Hydraulic cylinder is the hydraulic system will be converted to mechanical energy hydraulic actuator. The failure can be basically summarized as a hydraulic cylinder malfunction, unable to promote the load and the piston slipping or crawling. As the hydraulic cylinder failure caused by the phenomenon of equipment downtime is not uncommon, therefore, should pay attention to the hydraulic cylinder fault diagnosis and use of maintenance work. The following is the hydraulic cylinder malfunction or...
Horizontal multi-stage centrifugal pump efficiency decline reasons
On the horizontal multistage centrifugal pump efficiency decline, gear pump manufacturers a detailed overview is as follows: 1, dosing drugs or water quality before the pump and other reasons, so that the pump casing serious scale or corrosion. Serious pump casing can make the pump shell wall thickness increased by 2ram or so, and the horizontal multistage centrifugal pump wall scale formation of the tumor, the pump body volume reduced, the amount of pumping down, and the runner rough,...
Internal grinder in the process of using the program and maintenance
Internal grinder relative to lathes, milling machines, etc. using CNC system later, because of its special requirements of CNC system. In recent decades, with CNC technology, continuous grinding wheel dressing, automatic compensation, automatic exchange wheel, multi-table, automatic transmission and clamping workpieces and other operating functions to be achieved, CNC technology in the surface grinder and internal grinding gradually universal . Internal grinder use the program 1. Check the oil...
High temperature valve selection
Valve operating temperature is 425 ~ 550 ℃ for high temperature Ⅰ (referred to as PI level). The main material of the PI-class valve is the CF8-based "High Temperature Class I Medium Carbon Chromium-Nickel Rare Earth Titanium High-Quality Heat-Resistant Steel" in ASTMA351 standard. As PI is a special designation, the concept of high temperature stainless steel (P) is included here. Therefore, if the working medium is water or steam, the high-temperature steel C5 (ZG1Cr5Mo) may be used...
Handling method of oil leakage problem of Loader gearbox housing
Oil leakage of Loader gearbox housing is a common problem. Oil leakage may be caused by the quality of gearbox box, oil quality, oil seal quality, internal and external pressure of box and other problems. In addition, if oil filling is too much, it can also lead to overflow. The transmission box should take measures according to the actual situation when leakage occurs. Here we introduce a simple treatment method. If it is the oil leakage caused by the quality problem of the gearbox box...
How to clean LYB vertical submerged pump components of the pump life is very important
How to clean LYB vertical submerged pump components on the life of the pump is very important: How to clean LYB vertical submerged pump components on the pump life is very important: horizontal, stainless steel, chemical and so on. Cleaning is an important part of the work, cleaning quality has a great impact on the quality of mechanical repair. Using the correct cleaning method to improve the cleaning quality and reduce the cost is one of the problems that repair workers must consider. Botou...
Mortar pump maintenance and care precautions are what?
Mortar pump maintenance and repair methods: 1, the pump operation at the time of closing the outlet valve is called closed-pressure operation, and the closing pressure operation time of the plastic pump or lined plastic pump should be shortened as much as possible. Normal temperature medium is limited to no more than 5 minutes and high temperature medium is the best Do not exceed 2 minutes 2, sub-pump shell pump, such as the import of more than 150mm pump, the middle of the surface of the...
Central air-conditioning differential pressure bypass valve introduction
Differential pressure bypass valve self-contained pressure bypass valve and electric pressure bypass valve 2 kinds. Electric pressure bypass valve By controlling the opening of the pressure bypass valve to control the bypass flow of chilled water, so that the pressure difference between the supply and return mains constant. Widely used in the central air conditioning set between water separators, heat pump back and forth between, can effectively keep the equipment is not damaged. Electric...
Understand the type of valve
From the application point of view of distribution: how many types of valves in our country? (1) urban construction valves: Urban Construction Department with the general use of low-pressure valve, is currently environmentally friendly and energy-saving direction. Environment-friendly plastic valve, balance valve and the middle of the butterfly valve, metal butterfly valve is gradually replacing the low pressure iron gate. Domestic urban construction needs more valves for the balance valve,...
Test chemical shielding pump method
Chemical shield pump repair method is: Disassemble the shield pump: the first part of the clean-up, and then make an apparent inspection of them, whether there is any exception. Then measure the size of the key parts, electrical inspection of the motor windings (1) Mechanical inspection Measure the bore diameter of graphite bearings and the shaft diameter of bushings and check the finish of their mating surfaces. Such as graphite bearings and bushings with clearance over the provisions of...
Ultrasonic level gauge in use, there are potential problems?
The ultrasonic level gauge is simple to use, easy to use and low in cost. However, the current ultrasonic level gauges have some disadvantages, such as reflection problems, noise problems and crossover problems. Reflection problem If the object being probed is always at the right angle, the ultrasonic level gauge will get the correct angle. Unfortunately, in actual use, very few objects to be detected can be correctly detected. There may also be errors. Mirror reflection The problem is the same...
How to improve self-absorption time and capacity of combustion engine oil pump
How to improve self-absorption time and capacity of combustion engine oil pump 1. The discharge valve must be opened and activated Burner oil pump suction tube gas, relying on the combustion pump started pumping away, it must open the valve to start, so that gas can be discharged from the discharge port. 2. Burner oil pump cavity to have sufficient liquid ZYB burner pump chamber if there is no liquid, you can not form a gas-liquid foam mixture, it can not be aspirated. Burning too little pump...
Electric pump features advantages and disadvantages do you understand
Electric pump is to provide hydraulic fluid pressure of a hydraulic components, is a pump. Its function is to convert the mechanical energy of power machines (such as electric motors and internal combustion engines) into liquid pressure energy. The output flow can be adjusted according to the needs called variable pump, the flow can not be adjusted called quantitative pump. Hydraulic system commonly used pump gear pump, vane pump and plunger pump 3 kinds. Gear pump: smaller, simple structure,...
Fluoroplastic lined valve overview
With the rapid development of the modern petrochemical industry, some of the media used in special operating conditions are highly corrosive. Even stainless steel valves and lining rubber can not meet the needs of enamel valves. If the use of Hastelloy, Monel or Alloy No. 20 as the valve material, due to its large amount of Ni, Cr, Ti, Mo, Nb and Pt and other rare metals, its limited resources, expensive. According to the results of modern science and technology, fluorine plastic molecular...
Sewage pump performance and application of what
Sewage pump is a non-clogging pump, with many forms: such as submersible and dry two, the most common submersible WQ submersible sewage pump, the most common dry sewage pump, such as W-type horizontal Sewage pump and WL vertical sewage pump two. Mainly used to transport urban sewage, manure or liquid containing fiber. Paper and other solid particles of media, the medium is usually the temperature is not more than 80 ℃. Due to the media being conveyed contain easily entangled or bunched fibers....
Ordinary household valve selection expert advice 5 Note 1
When the purchase of visual valves, the surface should be no blisters; plating surface should be uniform, should pay attention to whether there is peeling, cracking, scorching, exposed, flaking, dark spots and obvious pitting and other defects; spraying surface tissue should be fine, smooth Uniform, no sagging, exposed defects. {TodayHot} Civil valves commonly used in ordinary households commonly used gate valve, ball valve, triangular valve and other forms, usually iron or copper. As the...
Input level gauge fault detection and how to solve
Input level gauge fault detection and how to solve 1. First check the output power is connected to the right, such as the connection is not correct should be modified in accordance with the operation manual. 2. With three output voltmeter measurement output voltage between 24V and O / P, the output voltage should be between 13V ~ 36V, if the output voltage is not normal should check the line or the relevant level gauge for any abnormalities. 3. The first two should be confirmed after normal,...
Factors and solution to idling damage of small flux magnetic drive pump
First of all, we have to know what causes such idling, finding the root causes and preventing them so as to reduce the loss during use. Following by the national treasure pump to popularize the reasons of small flow magnetic drive pump idling reasons and solutions! 1. Equipment leakage caused by lack of flow caused by lack of reason: the impact of small flow Magnetic drive pump flow is insufficient, mostly equipment suction pipe leaks, the bottom valve leaks; import and export block; lack of...
Centrifugal cryogenic pump cavitation you know why?
If centrifugal cryogenic pumps generate noise and vibration during operation, accompanied by reduced flow, lift, and efficiency, and sometimes fail to work, repairs often involve pitting or honeycomb damage near the entry edge of the blade, Serious when the entire leaves have this phenomenon, and even the leaves are penetrated, which is caused by cavitation damage. Centrifugal cryogenic pump cavitation causes: pump rotating impeller to work on the liquid, so that liquid energy increases. During...
What are the advantages of atmospheric water pump?
Atmospheric water ring pump is a pump products, in many industries have a very wide range of applications, but we all know? In fact, the atmosphere water pump is a series of atmospheric ejector water ring pump unit, water pump in front of the main reason for the series pump is to raise the ultimate vacuum, and to expand the use of the pump. Compared with other types of mechanical vacuum pumps, water ring vacuum pump has many advantages, including simple and compact structure, manufacturing...
Pump maintenance of the five necessary common sense to see the whole meeting
1, mechanical seal repair in several errors The larger the spring compression, the better the sealing effect. In actual fact, the spring compression is too large, can lead to rapid wear and tear friction, instantaneous burning; excessive compression of the spring lost the ability to adjust the dynamic ring end face, leading to seal failure. Ring seal ring as tight as possible. In fact, the ring is too tight moving ring harmless. One is to exacerbate the wear and tear between the seal ring and...
Valve actuator you choose right?
Because more and more factories use automatic control, manual operation is replaced by mechanical or automation equipment, the executive body is required to act as an interface between the control system and the valve mechanical movement, and the implementing agency is required to enhance the work safety performance and Environmental protection performance. In some hazardous situations, automated actuator installations reduce personnel injuries. Some special valves require emergency opening or...
Safety valve applications
Safety valve for clean, particle-free, low-viscosity fluids. Where the safety relief device must be installed and not suitable for installation of safety valve place, should install the rupture disc or safety valve and bursting disc in series. Containers in any of the following conditions must be fitted with safety valves: 1, independent pressure system (with shut-off valve and other systems separate). The system refers to all-phase, all-liquid or gas-phase communication; 2, the pressure of the...
