Multistage pump introduction

First, the multi-stage pump structure Description Multi-stage pump mainly by the stator, rotor, bearing and shaft seal composed of four parts:
1, multi-stage pump stator part mainly by the suction section, the middle, spit section and guide vanes and other components, there are tightening bolts to clamp the sections to form a studio. D-type pump generally horizontal inhalation, vertical spit up; for the injection of oil, the pump import and export are up vertically. DG multi-stage pump out, the entrance are up vertically.
2, multi-stage pump rotor mainly by the shaft, impeller, balance disc and shaft sleeve and other components. The axial force is balanced by the balance disc.
3, multi-stage pump bearings mainly by the bearing body, bearing and bearing gland and other components, bearing grease or thin oil lubrication.
4, multi-stage pump shaft seal with a soft packing seal, mainly by the sealing section of the water section and the tail cover, packing, retaining ring and other components. D-pump water seal water from the pump pressure water. DG pump water seal water from the external water supply.
5, multi-stage pump rotary pump directly driven by the prime mover through a flexible coupling. From the original motivation to see the pump, the pump rotates clockwise D, DG-type pump is a horizontal single suction multi-stage centrifugal pump. For the transport of water (containing less than 1% impurity, particle size less than 0.1mm) or other physical and chemical properties similar to water. D-type pump medium temperature less than 80 ℃, suitable for mine drainage, oilfield water, factories and cities to the drainage and other occasions. Oilfield water injection pump according to the corrosive nature of the pump using different materials. DG-type pump medium temperature less than 105 ℃, suitable for a variety of boiler feed water.
What is the difference between multi-stage pump and single-stage pump?
1, single-stage pump is only one impeller pump, the highest lift only 125 meters;
2, multi-stage pump refers to the pump with two or more impellers, the maximum lift can be more than 125 meters; multi-stage pump in the single-stage pump head needs to be equipped with two-stage motor, you can increase the number of impeller Equipped with four motors, which can improve pump life and reduce unit noise, but the multi-stage pump repair relative single-stage pump is a little more difficult.
3, the pump actually needs less than 125 meters head, according to pump room area, pump price (multi-stage pump generally higher than the single-stage pump price), and other factors considering the choice of single-stage pump or multi-stage pump.
As technology advances, single-stage impeller pump can improve the pump lift by increasing the pump speed, instead of multi-stage pump, but the price is a little expensive.
Second, the multi-stage pump management and maintenance precautions Pumps should be divided into two aspects of electricity and machine, for the machine, mainly to the previous maintenance record transferred out to know. Followed by the electrical aspects, and to understand the power of each pump motor, to his control system have a certain understanding.

The Intra-Oral Camera makes going to the dentist easier for both the patient and the dental health provider. Offices that use intra-oral cameras allow patients to be more interactive in the exam process, which provides patients with a greater sense of understanding and responsibility about personal dental health. Although a traditional visual inspection of the teeth may have sufficed in the past, technology has made it possible for dentists and patients to reap many more benefits from each health exam.

In a nutshell, an intraoral camera is a small video camera that takes an X-ray of the outside of the gum or tooth. The intraoral camera resembles an oversized pen and although usage varies depending on the model-type, this image-taking device is typically outfitted with a disposable protective sheath for each new patient. While simultaneously viewing a monitor, the dentist inserts the camera into a patient's mouth and gently shifts it about so that images can be taken from a variety of angles.

First used in the early 1990s, the intraoral camera is still a relatively new piece of dental equipment. Not so long ago, only a handful within the dental community used this tiny camera to take pictures of the teeth and gums. Today, use of the intraoral camera is widespread. For those dentists who do use this device, the intraoral camera has been, and continues to be, extremely handy both in diagnosing dental conditions such as tooth decay and cracked teeth and in educating you, the patient.

It's not difficult to understand why many patients have misgivings about dental diagnoses that aren't accompanied by pain or any visual cues that the naked eye can see. Since the intraoral camera is used in tandem with a computer screen or television monitor, your dentist can easily show you, in real-time, if you have a fractured tooth need gum disease treatment. In the case of the intraoral camera, a picture may be worth more than a thousand words!

The intraoral camera is especially useful during dental restoration procedures. For example, if you were to have an amalgam tooth filling replaced with a composite resin filling, your dentist could use the intraoral camera to take "before and after" pictures and display the results simultaneously for you to see!

In addition to being a great diagnostic tool, the intraoral camera is a fantastic educational aid. Instead of merely explaining to you what's happening inside your mouth, your dentist can actually show you. And, unlike conventional X-ray images that require processing time, there is no development time associated with intraoral cameras: The immediately available images that this tool renders can be a great time-saver for both you and your dentist.

Intra-Oral Camera

Dental Intraoral Camera, Wireless Intraoral Camera, Camera Intraoral

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