CN2111387U

CN2111387U - Wear and corrosion centrifugal pump

Info

Publication number: CN2111387U
Application number: CN 92201853
Authority: CN
Inventors: 李家林
Original assignee: YUNXI DATUN WEAR-RESISTING EQUIPMENT FACTORY
Current assignee: YUNXI DATUN WEAR-RESISTING EQUIPMENT FACTORY
Priority date: 1992-01-23
Filing date: 1992-01-23
Publication date: 1992-07-29

Abstract

The utility model relates to a centrifugal pump which is used for transporting strongly wearing mortar or other liquids, or strongly caustic mortar or other liquids in an ore dressing enterprise, a metallurgy enterprise, a chemical industry enterprise, etc. The utility model is characterized in that an impeller and a cover plate are made from wear-resistant and anticorrosive non-metallic composite material; one side of the impeller, which is close to the cover plate, is a sloping surface where a blade is attached; a shaft which is close to the impeller is provided with a shaft sleeve whose periphery is provided with a fixed sealing ring and a rotating sealing ring. The utility model has the advantages of wear resistance, corrosion protection, high efficiency, good sealing performance, few maintenance load, etc.

Description

Wear and corrosion centrifugal pump

The utility model relates to enterprises such as a kind of ore dressing, metallurgy, chemical industry and carries wearing and tearing are big or corrosivity the is strong mortar and the centrifugal pump of other liquid.

Past, various ore dressing plants were used to carry the centrifugal pump of mortar, all adopted gray cast iron or wear resisting cast iron manufacturing, had quick abrasion, service time is short, efficient is low, poor sealing performance, water power consumption is many, the maintenance and repair workload is big and problem such as operating cost height.

The purpose of this utility model be to overcome above-mentioned shortcoming of the prior art and provide a kind of service time long, efficient is high, good seal performance, maintenance and repair workload are little, water power consumption less, wear-and corrosion-resistant centrifugal pump that operating cost is low.

The utility model reaches by following approach: by impeller, pump case, cover plate, axle, axle sleeve, the fixing seal ring, the rotary seal ring, parts such as water ring and Stuffing box etc. are in addition formed the utility model, impeller and cover plate all adopt the nonmetallic composite manufacturing of wear-and corrosion-resistant, pump case liner one deck nonmetallic composite, one end and the impeller scyewed joint of axle, impeller stretches in the pump chamber of being made up of pump case and cover plate, impeller is by the one side of cover plate, from the neck to the periphery, make 10-20 ° inclined-plane, attached blade 4-8 sheet is arranged on the inclined-plane, cover plate is made 10-20 ° the inclined-plane that adapts with impeller, on the axle of impeller left end an axle sleeve is arranged, be useful on the thread seal ring of sealing on the axle sleeve, water ring and filler, screw thread on the axle sleeve, seal ring, water ring and filler etc. make axle realize excellent sealing jointly, the screw thread that is used to seal on the axle sleeve is single head or double end, its helix angle is 10-50 °, seal ring comprises two retaining rings and a swivel becket, swivel becket rotates simultaneously with axle between two retaining rings, one circle square groove is respectively arranged on two retaining rings, square tongue on the loose collar also has a water ring and Stuffing box with its engagement by support one end respectively, one sealing water-cooling tube is arranged on the water ring, its aperture is up big and down small reducer pipe, the speed when entering water ring to improve a spot of cooling water.

The utility model compared with prior art has following advantage:

1, efficient height is 79.9% as the efficient of 100mm pump, than the high 40-50% of efficient of ∏ type, sp molding sand stock pump, and is higher than the efficient of Australian Arvid Wallman pump.

2, long service life, than the flow passage part life-span of the pump of general cast iron and wear resisting cast iron manufacturing improve more than 10 times respectively and 3-5 doubly.

3, performance is good, and characteristic curve is steady, and when changes in flow rate was big, lift changed little, and the pressure weighing apparatus is fixed, high efficient band width, and net positive suction head is little simultaneously, and the degree of vacuum height all can use in low, high altitude localities.

When 4, adopting inhalation type,, can form negative pressure, suck automatically again from emptying gas in moment as sucking air.

5, good seal performance, the water yield of sealing water and hydraulic pressure reduce 80-90% and reduce 8-10 doubly than general ∏ type pump, sp type pump respectively, can prolong 5-8 the working life of filler doubly simultaneously.

6, simple in structure, for ease of maintenaince, reduce about 75% than in the past engineering time.

7, noise and vibration are little.

Description of drawings:

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

Fig. 2 is the schematic representation of impeller.

Fig. 3 is the schematic representation of fixing seal ring.

Fig. 4 is the schematic representation of loose gland.

The utility model describes in detail below with reference to the embodiment in the accompanying drawing:

Accompanying drawing 1 is a structural representation of the present utility model, the utility model is by impeller 3, pump case 2, cover plate 6, axle 7, axle sleeve 9, fixing seal ring 8, rotary seal ring 12, compositions such as water ring 13 and Stuffing box 11, impeller and cover plate adopt the Carborundum of wear-and corrosion-resistant, made such as silicon nitride, materials such as pump case liner one deck Carborundum or silicon nitride, the right-hand member and the impeller 3 of axle 7 are used scyewed joint, impeller 3 stretches in the pump chamber 4, on the axle of the left end of impeller 3 axle sleeve 9 is arranged, it is 10-50 ° single head or double thread screw that helix angle is arranged on the axle sleeve, axle sleeve 9 outer is with two fixing seal rings 8, rotary seal ring 12, water ring 13 and Stuffing box 11, rotary seal ring 12 is between two fixing seal rings 8, the rotary seal ring rotates simultaneously with axle 7, one aperture water-cooling tube 10 is from large to small arranged on the water ring 13, be filled with asbestos wick 14 in the Stuffing box, its left end is a binder lid 15,16 and 17 is saturating lid of sealing and sealing cover, 18,19 and 20 is respectively bearing, bearing cap and bearing support, the 21st, lubricating cup, the 22nd, locking nut, the 23rd, saturating lid, the 5th, pump case attachment bolt, the 1st, exhaust water pipe.As shown in Figure 2, impeller 3 is 10-20 ° inclined-plane from the neck to the periphery by the one side of cover plate, and attached blade 4-8 sheet is arranged on the inclined-plane, and cover plate 6 is made and impeller 3 corresponding 10-20 ° inclined-plane.As shown in Figure 3, on two retaining rings, each has 1 circle square groove respectively, and as shown in Figure 4, on the loose collar two respectively have the square tongue of 1 circle, respectively with the engagement of two retaining rings.

Claims

1, a kind of by impeller (3), pump case (2), cover plate (6), the wear-and corrosion-resistant centrifugal pump that axle (7) and axle sleeve (9) wait other parts to form, it is characterized in that impeller (3) and cover plate (6) all adopt the nonmetallic composite manufacturing of wear-and corrosion-resistant, pump case (2) liner one deck nonmetallic composite, one end and the impeller scyewed joint of axle, impeller stretches in the pump chamber of being made up of pump case and cover plate (4), impeller (3) is made 10-20 ° inclined-plane by the one side of cover plate from the neck to the periphery, attached blade 4-8 sheet is arranged on the inclined-plane, and cover plate (6) is made 10-20 ° the inclined-plane that adapts with impeller (3), by on the axle (7) of impeller one end axle sleeve (9) is arranged, be useful on the screw thread of sealing on the axle sleeve, fixing seal ring (8), rotary seal ring (12), water ring (13) and Stuffing box (11).

2, wear-and corrosion-resistant centrifugal pump as claimed in claim 1 is characterized in that the screw thread that is used to seal on the axle sleeve (9) is single head or double end, and helix angle is 10-50 °.

3, wear-and corrosion-resistant centrifugal pump as claimed in claim 1, it is characterized in that seal ring is made up of two retaining rings (8) and a swivel becket (12), swivel becket (12) rotates simultaneously with axle (7) between two retaining rings (8), a square groove is respectively arranged on two retaining rings, respectively with swivel becket (12) on the engagement of square tongue, realize rotary seal.

4, wear-and corrosion-resistant centrifugal pump as claimed in claim 1 is characterized in that there is a water-cooling tube (10) top of water ring (13), and its aperture is up big and down small reducer pipe.