China Water Ring Vacuum Pump pulley assembly

Product Description

Water ring vacuum pump
 
 

Export experience:
Over 20 years’ export experience.
 
Company Information
ZheJiang  East Pump (Team) Co., Ltd is a well-known pump manufacture in China, including scientific
research, manufacture, marketing and service.It owns 16 sub-organizations, 8 large manufacturing bases all over china.The sales revenue in 2014 reaches 400 Million dollars.Our products range 
covers Centrifugal Pump,Stainless steel Multi-stage Pump, Submersible Pump,
Hearth-fighting pump,Magnetic Pump,Diaphragm Pump,Slurry Pump,and many others.

BROTHER digit-control machine tools, borer, broacher, vertical lathe and large special test center run through the production flow line. Without excellent production equipment, there would not be excellent products.
The spirit of hard work is particularly presented in the production process here in Eastpump, even if a small screw, everything and every detail is made meticulously and shows the professional quality.
Eastpump strictly follows ISO 9001 quality control system, ISO 4001, OHSAS 18000etc. management systems and the scientific and reasonable flow of operation, making sure of a high effective high quality production process.
 
PRODUCT TESTING

The group company now holds a large pump test center, a three-coordinate measurer, a dynamic-static measurer, a quick laser shaping instrument, a multi-functional shot-blasting machine, an automatic argon-arc welder, a large lathe, a large mill, numeral control machine tools etc. more than 2000 sets of various nationwide and worldwide advanced production and detection facilities and over 4500 staff members, of which 72.6% are graduated from colleges and technical schools, 375 hold a junior title, 28 senior, 2 national experts and 5 professors. Every year this group puts a number of capital for technical innovation, product development and equipment import and, up till now, holds up to 600 national patent technologies and takes part in the draft-out and edition of both national and industrial standards, in total of tens of the product and technical standards covering water conservancy, chemical industry, fire-battling, city water supply etc. Fields.
 
Ordering instructions
Must provide order information:

The required pump model or user operating point flow, head, NPSH, the nature of the medium and temperature parameters and special parameters of the basic requirement
The pump main parts material (not to specify the configuration according to the sample delivery)
Inlet pressure (if inlet pressure >=.6MPa, pump casing should equip with high strength material)
The shaft seal type (three are mechanical seal, injectable soft-fillings seal, special seal part, packing seal and so on, it will delivery packing seal if it does not indicate)
The bearing structure type (select according to medium temperature and so on, it will deliver standard fitting if it does not indicate)
Revolving direction of pump (view from the end of transmission, the revolving direction of pump is anticlockwise. It will deliver standard fitting if it does not indicate)
Motor rotational speed, power, voltage, protection rank, insulation grade, cooling method, whether to guard against explosions and so on
Foundation: the sample 315 with the following common base frame sizes, frame sizes above 315 with a split base or no base, please specify when ordering
For spare parts, please indicate the name and quantity of spare parts required
Buying, no special requirements to flanges book list data delivery, if any special requests when ordering
State seal flushing method: wash the external and external washing. Add the rinse water temperature is suitable for =80°C or media containing sand and other particles of the occasion
Flat flange of the pump, with the sealing surface for sealing wire required the contract specified.
 
Selecting description:

The order of user isn’t limited by the data which listed in the sample performance curve and performance parameter chart, this company may design and provide the products specially according to user’s actual requirement flow and head
If it is close to the listed performance parameter, it will prefer to select the standard impeller pump and the high speed pump generally (the premise is that satisfies the requirement of cavitation performance)
If user’s required flow and head parameter aren’t in the scope of product’s large flow and low head operating condition, the matched motor power may confirm and reduce properly according to the actual operating condition point.
if you have special selecting or have the unclear place to the sample, please inquire the technical support department of ZheJiang  East Pump (Group) Co., Ltd directly.
Recommended spare parts: shaft, mechanical seal, seal ring, packing, bearings, impeller.
After service
East Pump persist in “consumers’ satisfaction” as our objective. “To offer consumers with high-class services” as our promises. They are embodied in our all processes of sales.
Ahead of-sales service: Our engineers offer consumers design and consultation services. They will commend the optimum products, therefore, losses because of unsuitable select of pump can be averted.
Sales service: We follow the products sold on our own initiative. Consumers can receive our professional training free to ensure our products can operate with high efficiency to avoid equipment hitch owing to consumers’ incorrect use.
After-sales service: Our service people will forwardly make selective-check for product sold termly. Furthermore, they will supervise consumers maintaining the equipment in time. Once our products work wrong, we will obviate the trouble as soon as possible, to make equipment operate normally.

Item of service
Technical training          Equipment evaluation
Installation and debugging   Troubleshoot
Maintenance              Update and improvement
Commitment to the service
one.      After signing the contract , send engineer for assisting installation and debugging.
two.      One-year warranty. Provide technical support free all-life of the products.
3.      Keep all-life contacting with clients, get feedback on use of the equipment and make the products quality continually perfected.
four.      Hot-line of service is available in 24h, responded in 8h. 400 1666 099

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Pulley Type

There are several types of pulleys. These include fixed pulleys, load multipliers and movable pulleys. Below is a description of each pulley type. A load multiplier is a special type of pulley with multiple wheels for increased lifting capacity. It is used in a wide range of applications including power transmission and construction. Some common uses of pulleys are listed below.

moving pulley

Movable pulleys work by transferring the weight of a load to another object of the same mass. Since a live pulley is inherently frictionless and weightless, the force required to lift a load with it is the same as the weight of the load. This principle applies to tall buildings and residences. It is an excellent choice for lifting heavy objects such as furniture and washing machines.
A pulley is a mechanical device with a wheel that rotates on a shaft. The axle is attached to the wheel and is usually fixed. The movable pulley can be fixed or movable, both of which can change the direction of the force on the rope. Some pulleys can also change the magnitude and direction of the force. They are ideal for a variety of applications, from lifting heavy objects to transporting objects.
Another type of movable pulley works by transmitting force to another object. It has a free axis and the total force provided by the rope tension is balanced. Since the tension on the rope is constant in each segment, pulling one end of the rope will double the force on the shaft, resulting in two mechanical advantages. This mechanical advantage is the main reason why movable pulleys are so versatile.
Another form of moving pulley is called a KWL diagram. The KWL diagram summarizes the basic concepts of the drive wheel. KWL diagrams are an excellent way to assess a student’s understanding of the concepts discussed in the course. Word questions are a great way to check whether students understand concepts. When students answer the word questions correctly, the answer is yes!

Fixed wheel pulley

If you need to move heavy objects, a single fixed wheel pulley is not a good choice. Using a single fixed pulley might be similar to using a handbag, but it’s not very convenient. This type of pulley system relies on friction to transmit motion. As a result, it can slip and isn’t always reliable. Fortunately, you can find other options that work just as well.
Fixed pulleys are the most basic type of pulley. They consist of grooved wheels and ropes attached to objects. These pulleys make lifting easier. Because the rope or cable only moves in one direction, the movement of the object feels lighter. And they are also easy to install. However, before you buy a fixed wheel pulley, make sure it is strong enough to support the weight of the load.
The disadvantages of fixed pulleys are obvious. One of them is the lack of mechanical advantage. A fixed pulley pulls up with the same force as a single moving pulley, and a single fixed pulley is not particularly effective as a force multiplier. However, the effect is more pronounced when you combine multiple fixed-wheel pulleys. You will get double the power! So what do fixed wheel pulleys have to offer?
Fixed wheel pulleys can be as small as a ring. A single ring pulley requires twice as much force as the weight being pulled. Adding more loops to the rope will reduce the effort required to pull the weight. The mechanical advantage of a fixed pulley is proportional to the number of strands running to the free pulley. A 100-pound pull on the free end will lift a 300-pound load.

composite pulley

Compound pulleys are pulleys that can be used to change the direction of a control wire. It can also be used to modify the mechanical force of the wire by moving the item it is connected to. In galleons, compound pulleys are more common. They are often combined with other ropes for mechanical advantage. Here are some common uses for composite pulleys.
The ideal mechanical advantage of a pulley is equal to the number of rope segments that pull up the load. This means that the more rope segments, the less force is required. A compound pulley will have the ideal mechanical advantage of 2, which means it will generate more force than a simple pulley. Composite pulleys are also more efficient at transmitting force because their number of rope segments is usually equal to the unit weight.
Composite pulley systems use more than two pulleys and ropes. More pulleys will reduce the force required to move heavier objects. They are usually used in large sailboats. The system is also used on construction sites. It can be used for a variety of applications, including lifting large objects or transmitting electricity. You can imagine how it would change your life if you had to move a large sailboat, but the result would be the same: a composite pulley system would make it easier to lift a large sailboat.
Composite pulleys are also known as fixed pulleys. The fixed pulley is stationary, and the movable pulley moves back and forth. The latter is more effective when used with a detachable cord or strap. On the other hand, a moving pulley is a moving pulley and it gives you a mechanical advantage. You can imagine this pulley on a flagpole.

load multiplier

The multiplication system has three basic parts: the rope grab, the connector, and the pulley. While some basic multipliers may combine the three parts, the concept remains the same. The multiplication system can make pulling the rope easier by reducing the amount of friction that occurs. Below are some examples of multiplication systems. A compact rope grab is a great option for resetting the multiplier.
The load reduction that a pulley system can achieve is proportional to the number of ropes used to support it. Although most utility pulley systems use only four ropes, the theoretical maximum load reduction is a quarter of the actual load. In other words, the four-wheel system only reduces the weight of a 1,000-pound load by a quarter. That would require 167 pounds of force, a far cry from the 500-pound load a single pulley system can achieve.
The mechanical advantage of a pulley system can be calculated by calculating the ratio between the forces exerted on each wire. For example, a 90-kilogram load is supported by three ropes, each weighing about thirty-five pounds. The ropes on pulleys A and B each carry a load of 60 kg. Using this formula, a single pulley system will yield a mechanical advantage over two tractors.
To calculate the force required to pull the rope over the pulley, measure the angle and deflection between the ropes. The deflection angle when added to the included angle should equal 180 degrees. A 75 degree angle requires 159% of the load force. This means a total load multiplier of four. This formula is an important tool for calculating the force multiple of the pulley.

Disadvantages of fixed pulleys

There are two basic types of pulleys: movable and fixed. Active pulleys are more advanced, allowing the pulley to move according to the load. They reduce the force required to lift the load. Active roller pulleys are more compact and therefore take up less space. Both types are good for lifting heavier objects, but they each have their pros and cons.
Fixed wheel pulleys can be used to lift heavy objects. This type of pulley consists of a wheel with a fixed shaft that has grooves on its edges for guiding ropes or cables. This is a simple machine as no motor or engine is required to lift objects. When two or more wheels are used together, the ropes around the wheels form a powerful hoist.
Single wheel pulleys are not suitable for lifting. They tend to push things down. Also, they are unreliable because they rely on friction and can slip. Also, a single wheel pulley would require a lot of space. Another disadvantage of fixed-wheel pulleys is that they make it difficult to move heavy objects easily. Single fixed-wheel pulleys also tend to slip easily, making them a poor choice for many applications.
Fixed wheel pulleys are also easier to install and maintain than manually operated ones. It requires less space and lubrication than manual pulleys. Manual pulleys can cause injury because the operator will be lifting the full weight of the heavy object. Additionally, rope slippage can lead to muscle strains and rope burns. And the system requires frequent maintenance.

editor by czh 2022-11-27