| 摘要 |
A COOLING LOOP DEVICE OF A PLUNGER PUMP IS DISCLOSED. THE PUMP HAS A PUMP BODY CONNECTED TO A WATER-IN CAVITY AND THE PUMP BODY CONTAINING A PLUG ROD WHICH SUBJECTS TO RECI ROCATING OPERATION, AND A PLURALITY OF SEALING RINGS, CHARACTERIZED IN THAT AT THE END FACE P BETWEEN THE C PURRIP BODY AND THE WATER-IN AVITY, AND AT THE PARTITION OF THE PLUG ROD RECIPROCATION HOLE, COMMUNICATION HOLES ARRANGED ALTERNATELY IN AN UPPER AND LOWER POSITION ARE PROVIDED AND THE COMMUNICATION HOLES ARE EXTENDED TILL THE BOTTOM EDGE. OF THE SEALING RINGS WITHIN THE INTERIOR OF THE PUMP BODY, LOW PRESSURE WATER STREAM FLOWS FROM THE WATER-IN CAVITY TO THE BOTTOM EDGE OF THE SEALING RINGS, THE WATER STREAM IS USED FOR COOLING AND FOR AUXILIARY LUBRICATING SUCH THAT THE PLUG ROD IN THE COURSE OF RECIPROCATION OPERATION AND THE SEALING. RINGS WILL NOT DEFORM AS A RESULT OF HEAT WHEN THE SEALING RINGS. ARE COMPRESSED, ENSURING THE SEALING RINGS COVER THE PLUG TOD IN THE COURSE OF RECIPROCATION MOVEMENT OF THE. PLUG ROD AND LEAKING OF THE PLUG ROD BEING PREVENTED.
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