Tag: RY pump

Our company provides RY hot oil pump | hot oil circulating pump, conveying heat conducting oil at a temperature less than 350 degrees Celsius.
This is a centrifugal pump with high efficiency and high flow rate.

As we all know, when it comes to the heat conduction oil pump, we know that the medium transported is heat conduction oil, and the temperature is generally very high. In fact, there are many situations in which the heat conduction oil pump is not the heat conduction oil, but some other high-temperature media.
Since the temperature of the medium transported by thermal oil pump is very high, the higher the requirement of safety coefficient of thermal oil pump is.
Must start from the root, including the heat pump of each part of the processing technology has strict requirements, in order to ensure the quality of heat pump products.

RY hot oil pump advantages

RY heat conduction oil pump pump of high technology, high efficiency, under the thermal state can long-term stable operation, no leakage, no additional cooling system, the use of safe and reliable characteristics of heating medium in our country has been widely used in the heating system, has entered the petroleum, chemical, rubber, plastics, pharmaceutical, textile, printing and dyeing, road construction, food, and other industrial sectors, RY series wind cold hot oil pump is mainly used for conveying not weak corrosion of high temperature liquid containing solid particles, using temperature is 370 ℃ or less and is an ideal circulating pump.
The pump is widely used in the high temperature setting of paper and dining box, dynamic vulcanizing tire and recycled rubber machinery, plate vulcanization, rubber, drying, feed drying, printing and dyeing, chemical industry, plywood production, waterproof rolling material production, asphalt heating, surface drying and other industries.

Features:

(1)RY thermal conduction oil pump is a second-generation product developed on the basis of digestion-absorption foreign oil pump. Its basic structure is a single-stage single-suction cantilever foot support structure. The pump’s inlet is axial suction, and its outlet is vertically upward, mounted on the base together with the motor.
(2) The support of RY thermal oil pump adopts the structure form of double-end ball bearing support. The front end is lubricated by lubricating oil, the back end by grease, and there is a guide pipe in the middle to observe the sealing situation and recover the thermal oil at any time.
(3) Adopt self-heating cooling structure, change the traditional water-cooling structure, make the structure simple, small volume, save the operation cost, good performance, reliable use.
(4) The combination of packing seal and mechanical seal, packing seal with high temperature resistant packing, has a good thermal adaptability, and mechanical seal with high mechanical strength, good wear resistance hard alloy material, to ensure the sealing performance under high temperature.

(5) The third generation of polytetrafluoroethylene (PTFE) is used as lip seal, which makes the seal performance leap, and improves the reliability of rubber seal by 25 times, with strong corrosion resistance.

How to improve the product quality of thermal oil pump, what problems should be noticed when using thermal oil pump?
Years of experience in the production of thermal oil pumps and the solutions to the problems of thermal oil pumps over the years to share with you, I hope to provide some help to the customers who are using thermal oil pumps.
     

Structure:

First of all, starting from the structure of the hot oil pump, the thermal oil pump is mainly composed of eight large parts: the pump body, the pump cover, the bearing body, the support, the spindle, the seal, the bearing and the impeller.Pump and motor by disc coupling link.
Pump body, pump cover material is now mainly used in China cast steel ZG230-450 more, can also use ductile cast iron material, the two materials compared to the latter wear resistance and hardness and temperature resistance due to the former.
But good ductile iron cost price is higher than cast steel processing, the former is a bit, once the parts appear pores or trachoma can be solved by welding, and the latter requires a very high welding process, so the latter parts processing reject rate is higher.
Another is bearing body is generally adopt ordinary cast iron material, bearing the body does not contact with the media, is mainly used to assemble two pieces of bearing to bearing spindle and heat conduction oil pump impeller, the bearing body is the key to both ends of bearing whether the processing of concentric, if concentricity difference, then certainly will shorten the service life of bearing on both ends, so the concentricity directly affects the service life of bearing, also is the equivalent of a direct impact on the service life of heat conduction oil pump.
The next is the spindle, the material of the spindle should choose 1CR18NI9TI, but now generally small manufacturers choose 40Cr tempering treatment, the main position of the spindle tempering treatment is the bearing position, seal position and shaft head and impeller position.
Moreover, the spindle of the thermal oil pump must be used for grinding shaft, diameter balance and dynamic balance detection. Its purpose is to improve the wear resistance of each key part and the concentricity of the spindle, so as to improve the product quality of the thermal oil pump.
Sealing and bearing are another key parts of heat conduction pump. The special seals for heat conduction pump commonly used now include heat-resistant carbon fiber pan root, ptFE skeleton oil seal, PTFE power seal and bellows mechanical seal.

What we commonly use in daily life is the combination of high-temperature carbon fiber packing and TEflon skeleton oil seal. Its advantage is that the packing has better flexibility, but its disadvantage is that it is not corrosion-resistant. Once there are corrosive elements in the medium, the sealing is relatively easy to be damaged.

Maintenance:

Routine maintenance or replacement is easy and easy to operate.
If ptFE power seal is adopted, its sealing effect is better than the former, and it has excellent corrosion resistance. Its disadvantage is that the holding shaft is too dead and its service life is long. However, once the thermal conductivity oil pump leaks, the position of this pump shaft will be sealed and worn under normal circumstances, so a new shaft is needed.
The cost of using a bellows mechanical seal is too high, but the service life is longer than the first two, and maintenance or replacement is more troublesome.
One of them is the impeller of heat conduction oil pump, generally using cast steel or ductile iron, the key is the impeller processing technology and impeller balance degree, each impeller processing must be on the special impeller balance machine for testing, checking to ensure the radial balance and dynamic balance of the impeller.

Secondly, the service life of the heat conduction pump is affected by the assembly of the complete machine, the concentricity and coaxial ratio of the motor and the heat conduction pump are not very high.
This directly affects the service life of thermal oil pump.
If the concentricity deviation between the motor and the heat conduction pump is too large, when the pump starts, the huge centrifugal force of the motor runs eccentrically with the pump shaft, soon the bearing of the pump will be damaged, and then the seal will be broken.
In order to solve the problem of the concentricity between the motor and the coupling of the thermal oil pump, our company developed the belt soft coupling and the diaphragm coupling. The belt soft coupling means that the pump coupling and the motor coupling do not contact, and the middle belt is connected, so as to effectively buffer the concentricity between the pump and the motor.
Thus improve the service life of the pump.