Automatic overheating prevention device of fire pump

Abstract

The invention relates to the field of fire pump related equipment and particularly relates to an automatic overheating prevention device of a fire pump. The device comprises a sealing cover nut, an adjusting shaft shell and a valve body, wherein the sealing cover nut is in threaded connection with a left end of the adjusting shaft shell, a right end of the adjusting shaft shell is in threaded connection with the left side of the valve body, a right end of a capping nut is sleeved with a first sealing ring, an inner side end of the sealing cover nut is slidably connected with a left end of an adjusting screw rod, the left end of the adjusting screw rod is sleeved with a second sealing ring, an adjusting screw is in threaded connection with an adjusting nut, the adjusting nut is slidably connected with the middle of an inner wall of the adjusting shaft shell, the right side of the adjusting shaft shell is sleeved with a third sealing ring, a right end of the adjusting screw is slidably connected with a non-return shaft, the right side of the non-return shaft is in key connection with a non-return ring, and the non-return ring is slidably connected with an inner wall of the right sideof the adjusting shaft shell. The device is advantaged in that precision of an overflow valve can be well controlled, operation is stable, and the anti-overheating effect is good.

Description

technical field [0001] The invention relates to the field of equipment related to fire-fighting water pumps, in particular to an automatic overheating prevention device for fire-fighting water pumps. Background technique [0002] When the water volume at the end of the fire pump is small, the water circulates in the pump due to the continuous operation of the water pump. After a long time, the water temperature will rise and damage the water pump. Therefore, add a bypass to return the excess water to the water storage tank through the overflow valve. . [0003] However, in the prior art, common relief valves are used, and the springs cannot move well in the horizontal direction, cannot control precision well, and run unsteadily. [0004] In view of the above problems, the present invention designs an automatic overheating prevention device for fire pumps. Contents of the invention [0005] Aiming at the deficiencies of the prior art, the invention provides an automatic o...

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, ordinary relief valves are used, and the spring cannot move well in the horizontal direction, and the control accuracy cannot be well controlled, and the operation is not stable.

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