Centrifugal pump filler sealing device
A packing sealing and centrifugal pump technology, which is applied to the components, pumps and pump components of the pumping device for elastic fluid, can solve the problems of large leakage of the water pump, blockage of the water hole of the water seal, and poor sealing effect of the packing seal.
Inactive Publication Date: 2018-03-09
湖北三峡泵业有限公司
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Problems solved by technology
When replacing the packing without dismantling the pump during routine maintenance, since the packing ring is difficult to remove from the stuffing box, generally only the packing on the outer side of the packing ring can be replaced, and the inner packing ring cannot be replaced
If the inner packing of the packing ring is damaged, it will not be able to play a sealing role. No matter how well the outer packing interface and tightness are adjusted, the sealing effect of the entire packing seal will be poor.
Failure of the packing seal will cause a large leakage of the water pump, and even water loss in the intake section of the suction section.
In particular, the water quality in coal mines is poor, and the water sealing holes on the packing ring are often blocked by impurities, which cannot play the role of water sealing water and water cooling. Replace the packing
Method used
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Embodiment Construction
[0015] Such as figure 1 As shown, it is a structural schematic diagram of the prior art. When the inner packing of the packing ring is damaged, the inner packing cannot be replaced because the packing ring cannot be taken out.
[0016] Such as figure 2 The above is a structural schematic diagram of the present invention, a centrifugal pump packing seal device, including a pump shaft, a packing seal part is arranged outside the pump shaft, and the packing seal part is connected with the suction section or the stuffing box body 7 through bolts, and a pump is in the There is a set of packing seals at both ends of the pump shaft, one set is connected to the suction section, and the other is connected to the stuffing box body. The packing sealing part includes packing gland 1, packing sleeve 8, stuffing box sleeve A 4, stuffing box sleeve B 5 and packing ring 3, stuffing box sleeve A 4 and stuffing box sleeve B 5 constitute a stuffing seal, and stuffing ring 3 Set between stuffi...
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The invention discloses a centrifugal pump filler sealing device which comprises a pump shaft. A filler sealing component is arranged outside the pump shaft, is connected with a suction section or a filler box by bolts and comprises a filler gland, a filler sleeve, a filler box sleeve A, a filler box sleeve B and a filler ring, a filler sealing box is formed by the filler box sleeve A and the filler box sleeve B, and the filler ring is arranged between the filler box sleeve A and the filler box sleeve B. The centrifugal pump filler sealing device has the advantages that the filler box is divided into an inner box and an outer box, the filler ring is positioned between the inner box and the outer box of the filler box, accordingly, packing on the inner side of the filler ring can be conveniently replaced, and cleaning and dredging can be facilitated when the filler ring is blocked; centrifugal pumps are easy to maintain when operated in downhole environments with poor water quality andthe like, and the packing replacement frequencies can be lowered.
Description
technical field [0001] The invention relates to a packing sealing device of a centrifugal pump, in particular to a novel structure of packing sealing of a centrifugal pump used in coal mines. Background technique [0002] At present, the shaft seal of the mine main drainage centrifugal pump is mainly packing seal, and the packing seal mainly adopts oil-impregnated asbestos packing or carbon fiber packing. The packing seal has the advantages of simple structure and low cost, but the packing seal needs to replace the packing regularly, otherwise the leakage will continue to increase. In order to play a good water sealing role in the packing seal and prevent frictional heating, packing rings are generally installed in the stuffing box. When replacing the packing without dismantling the pump for routine maintenance, since the packing ring is difficult to remove from the stuffing box, generally only the packing on the outer side of the packing ring can be replaced, and the inner...
Claims
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IPC IPC(8): F04D29/10
CPCF04D29/106
Inventor 罗潜黄涛龙小平林玉华秦媛陈敏郑镇郭平昌
Owner 湖北三峡泵业有限公司