Insulation asphalt pump without overload design technology used in different fields, play an important role in the industry and value, the following briefly describes the use of insulation asphalt pump in the industry, in accordance with the appropriate way and method to ensure the insulation asphalt Pump in use in good use value and role. In a typical centrifugal oil pump, the power always increases with the increase of the flow rate. That is to say, the power curve is a curve that increases with the increase of the flow rate, which brings a problem to the application of the insulated asphalt pump. When The pump is safe to use at pump operating at design duty points less than motor rated power, but increases as pump head decreases (as can be seen from pump performance curves), and power Increase accordingly. When the flow rate exceeds the design point flow and reaches a certain value, the insulation bitumen pump input power may exceed the rated motor power caused by motor overload and burned. Motor overload operation either protects the system from stopping the pump; otherwise, the motor is burnt out due to a failure of the protection system. Insulation bitumen pump head below the design conditions of the use of head lift, in practice is often encountered, a situation is the pump selection, the pump lift election too high, but the actual use of the pump is Reduce the use of head; the other case, in the pump is not very good to determine the operating point, in other words, the pump flow need to be adjusted frequently; there is a case where the pump needs to be changed frequently used. These three conditions can overload the pump and affect the reliability of the pump. It can be said that for pumps without full lift characteristics (including submersible sewage pumps), the range of use is greatly limited. The so-called full head characteristic (also known as no overload characteristics) refers to the power curve increases with the flow rate increases very slowly, more desirably when the flow rate increases to a certain value, the power will not only rise again, but will have Drop, that is, the power curve is a hump curve, if so, we simply select the motor rated power slightly more than the hump point power value, then the flow of 0 to the maximum flow of the entire range, whether you are in that one Operating conditions point, the pump power will not exceed the motor power and the pump overload, with this performance of the pump, either selection or use, will be very convenient and reliable. In addition the motor power is not too big, you can save considerable equipment costs. Insulation asphalt pump in the use of the role and value of the industry, in accordance with the use of a certain amount of power to ensure the insulation of asphalt pump motor power and value.
Cylindrical Rebar Coupler, which is used to connect rebar thread processed by Rebar Thread Rolling Machine. The coupler shape is round.
The advantage of this type coupler is material saving and labor saving.
Cylindrical Rebar Coupler has parallel thread inside of the coupler. And connect two threaded bar by it.
Cylindrical Rebar Coupler
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