CN2846819Y - Hydraulic long-term seal device for water pump - Google Patents

Abstract

The utility model relates to a hydraulic long-term sealing device for a water pump. The utility model which belongs to a part of a pump is a sealing device. The aim of the utility model is to provide a hydraulic long-term sealing device for a water pump. The utility model is characterized in that an original sealing part in a housing of a water pump is provided with a sealing body, and both ends of an inner cavity thereof are provided with double-surface sealing bearings which form a sliding fit with the inner cavity; both ends of an inner cavity are also provided with linings, and the middle part of each lining is provided with a through hole, and butter is injected in the inner cavity; the upper part of the sealing body is provided with a butter injecting mouth, and the lower part is provided with a deflation fastening screw rod and is sealed and fastened by an end cover. The sealing performance is good, the water pump is durable, the maintenance and the servicing are easy, and particularly a pump shaft can be prevented from abrasion; moreover, the cost is low and the modification is easy.

Description

Water pump hydraulic pressure long term seal device

Technical field

The utility model belongs to the parts of pump, is a kind of seal arrangement.

Background technique

Water pump uses very wide in industrial and agricultural production.Particularly in flood control, pump drainage water and hydraulic engineering and Mineral Engineering a kind of main facility.But very wide its sealing of facility of this use mostly is to compress with asbestos rope, pigtail root, oil seal washer to make seal arrangement.The sealing of above-mentioned backwardness makes Pump Axle running pressure wear into the hole, and often advances air, does not take out water.And be not durable and repair very difficultly, cause the water pump life time short, it is frequent more to renew machine, causes waste.

Summary of the invention

At the problems referred to above, the purpose of this utility model is to provide a kind of water pump hydraulic pressure long term seal device.The utility model is realized with following mode: a kind of water pump hydraulic pressure long term seal device, and sealing part has seal 1 in water pump cover, it is characterized in that seal 1 inner chamber two end part are equipped with dual face seals bearing 2, and is slidingly matched with inner chamber; These dual face seals bearing 2 central authorities are pump shafts 3; Between dual face seals bearing 2 and pump shaft 3 lining 4 is housed, there is through hole at these lining 4 middle parts; Be marked with butter 9 at seal 1 inner chamber, the grease nipple 7 of notes is arranged at its top, and there is venting fastening screw 8 its underpart, and butter 8 fills pump shaft 3 by lining 4 middle part through holes; One side end of seal 1 has end cap 5, and is fixing with end cap screw rod 6; The opposite side of seal 1 connects impeller 10 by pump shaft 3.The utility model adopts the hydraulic pressure long term seal to replace the backward water pump packing of background technique; After novel seal arrangement was packed in the water pump cover, water pump maintenance durable in use, easy particularly avoided pump shaft frayed, though the practice explanation since service time long back water pump vane need to change, but seal arrangement is intact.Only need liquid feeding.Hydraulic pressure long term seal pressurized 50-1000 kilogram or bigger in the pump operation, good seal performance, cost is low, durable in use, and maintaining is convenient, easily transforms.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

Now the utility model is described in further detail in conjunction with the accompanying drawings.With reference to Fig. 1, the utility model is that the seal 1 of former sealing part in water pump cover is processed into bearing hole and becomes inner chamber, and dual face seals bearing 2 external diameters that meet with need are slidingly matched, and a dual face seals bearing 2 respectively is equipped with at two end part, and the fluid injection space is left at the middle part.The sealing part length of pump shaft 3 is pressed the identical and bearing bore diameter processing of position of bearings length of seal 1, between two dual face seals bearings 2 in the stage casing of pump shaft 3 and pump shaft 3, lining 4 is housed, there is through hole at these lining 4 middle parts, make butter 9 enter pump shaft 3, dress end cap 5 on the side end pump shaft 3 of seal 1.After above-mentioned dual face seals bearing 2 and lining 4 are put into seal 1 inner chamber together, fastening good end cap screw rod 6.Notes grease nipple 7 is housed on the top of seal 1, injects butter 9, the fastening screw 8 of will exitting installs, and has refilled impeller 10.Like this, hydraulic pressure long term seal device integral installation middle part in water pump cover.Good seal performance.Added a not good liquor in six months between the spreadable life, water pump can keep long-term and run well.

Claims (1)

1, a kind of water pump hydraulic pressure long term seal device, sealing part has seal [1] in water pump cover, it is characterized in that seal [1] inner chamber two end part are equipped with dual face seals bearing [2], and is slidingly matched with inner chamber; These dual face seals bearing [2] central authorities are pump shaft [3]; Between dual face seals bearing [2] and pump shaft [3] lining [4] is housed, there is through hole at this lining [4] middle part; Be marked with butter [9] at seal [1] inner chamber, notes grease nipple [7] is arranged at its top, and there is venting fastening screw [8] its underpart, and butter [8] fills pump shaft [3] by lining [4] middle part through hole; One side end of seal [1] has end cap [5], and is fixing with end cap screw rod [6]; The opposite side of seal [1] connects impeller [10] by pump shaft [3].