External heating pump heater
An external heating and heater technology, applied in the direction of non-variable pumps, pumps, pump components, etc., can solve the problems of polluted water quality, inconvenient maintenance, short service life of electric heating tubes, etc., to achieve extended service life, convenient maintenance, heat The effect of high utilization
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Embodiment 1
[0024] Embodiment one, see figure 1 , an externally heated pump heater, including a pump casing 1 and an electric heating tube 2.
[0025] The pump casing 1 is a circular tubular structure. The pump casing 1 is provided with a water outlet 11 . The pump casing 1 is made of heat insulating material. One axial end of the pump casing 1 is covered with a thermally conductive support plate 4 . The support plate 4 is made of stainless steel. The support plate 4 is a stamping part. The support plate 4 is fixed together with the pump casing 1 by closing the mouth. The pump casing 1 and the support plate 2 are sealed together by a sealing ring 5 . The support plate 4 is provided with a water inlet 41 . The water inlet 41 is located at the very center of the support plate 4 . An electric heating tube installation groove 42 is provided on the outer surface of the support plate 4 . The electric heating pipe installation groove 42 is an annular groove. The electric heating pipe i...
Embodiment 2
[0031] Embodiment two, see image 3 , the difference from the first embodiment is: the outer surface of the support plate 4 is also provided with a heat insulating plate 8 . The heat shield 8 is annular. Heat insulation board 8 has heat insulating material to make. An annular vacuum chamber 81 extending along the extending direction of the heat insulation board 8 is formed between the heat insulation board 8 and the support board 4 . The heat conducting plate 3 is located in the vacuum cavity 81 .
Embodiment 3
[0032] Embodiment three, see Figure 4 , the difference from the second embodiment is: the heat shield 8 is provided with a one-way valve 82 that opens toward the outside of the vacuum chamber 81 . During the manufacturing process, the air pressure in the vacuum chamber is lower than the atmospheric pressure when the vacuum chamber is below 100°, that is, the vacuum state is realized by heating the present invention to above 500° to discharge the gas in the vacuum chamber. When the substance is gasified or volatilized to cause the gas in the vacuum to become dense, the vacuum pump can be turned on to release the gas and keep the gas in the vacuum chamber thin.
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