CN201202687Y

CN201202687Y - Pump for granulated slag water system

Info

Publication number: CN201202687Y
Application number: CNU2008200770571U
Authority: CN
Inventors: 马长凤; 孟宪义; 李文青; 冯阁伟; 田欣; 柳朝阳; 刘连继; 宋润平; 王玉敏
Original assignee: Tangshan Iron and Steel Co Ltd
Current assignee: Hebei Iron and Steel Co Ltd
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-03-04
Anticipated expiration: 2018-04-25

Abstract

Disclosed is a pump for a granulated slag and water system, belonging to water pump field and aiming at solving the problem that the packing seal of the pump in existence fails easily and that the pump comprises a pump body, and a sealing device is arranged between the pump body and a pump shaft arranged inside the pump body. The pump is improved in that the sealing device is replaced by mechanical seal. The pump comprises stationary rings, moveable rings, spring brackets and a spring. The two stationary rings are respectively arranged at the bottoms of a seat hole and a hole cover of the sealing device on the pump body; the two moveable rings are respectively hitched on a pump shaft, with the sealing head faces respectively corresponding to the sealing head faces of the stationary rings; the front ends of the two elastic brackets are respectively sleeved with the two moveable rings and the back ends are respectively inserted with two ends of the spring; and the moveable rings retain reliable sliding frictional contact with the stationary rings under the action of the spring. The pump has tight and reliable seal, and the wear resistance, the corrosion resistance and the service life of the sealing head faces can be improved by the wear pads on the sealing head faces. The pump is suitable for a granulated slag and water system and the like.

Description

Grain slag water system pump

Technical field

The utility model relates to the grain slag water system pump that blast furnace process is used, and belongs to the pump technology field.

Background technique

Centrifugal pump in the granulated blast-furnace pulp water system adopts packing seal, gland sealed mechanism is that filler is packed into after the packing cavity, make axial compression through gland and produce radial force, and under the effect of this power, closely contact with pump shaft, the lubricant oil that flood in the filler this moment is extruded, and the pump shaft surface of contact between form oil film because contact condition is not even especially, boundary condition just appears in the contact position, and this state is called " bearing effect "; Jie Chu recess does not form little oil groove, and thicker oil film is arranged, and when pump shaft and filler had relative movement, the contact position just formed irregular labyrinth with contact position not, plays a part to stop liquid to flow leakage, is referred to as " labyrinth effect ".Suitable compressing just can be kept " bearing effect " and " labyrinth effect ".Yet slag-water slurry makes the bolt corrosion of gland serious, and filler is difficult to keep the impaction state that suits; In addition, the grain slag aqueous corrosion is stronger, and the lubricant film difficulty is set up; Moreover granulation pulp water endoparticle thing and fibre content are higher, cause packing seal often to be in failure state because of wearing and tearing; the inefficacy of sealing causes the emulsification of lubricant phenomenon serious again; make the grain slag water pump be difficult to reliable operation, for this reason, the seal form of reply grain slag water pump redesigns improvement.

Summary of the invention

The purpose of this utility model provides a kind of grain slag water system pump, and this pump should be able to overcome the use defective of above-mentioned packing seal form.

The alleged problem of the utility model realizes with following technological scheme:

A kind of grain slag water system pump; the pump housing is arranged in the formation; between the pump shaft in the pump housing and the pump housing seal arrangement is arranged; its improvement is; described seal arrangement adopts the mechanical-type sealing; it has stationary ring, rotating ring, spring bracket, spring in forming; two stationary rings lay respectively at the seal arrangement seat hole on the pump housing and the bottom of port lid; two rotating rings are set with on pump shaft, the seal face of corresponding two stationary rings of seal face difference, and the front end of two elastic supports is pegged graft with the two ends of spring respectively with two rotating ring sockets, tail end respectively.

Above-mentioned grain slag water system pump is inlaid with wear-resistant pad respectively on the seal face of described stationary ring, rotating ring.

Above-mentioned grain slag water system pump has auxiliary seal ring respectively between described two stationary rings and seal arrangement seat hole, the hole gland.

In the mechanical seal mode that the utility model provides, rotating ring under the spring force effect with stationary ring between sliding friction contact, during the seal face wearing and tearing, rotating ring can move axially at spring force effect lower edge pump shaft, keep with stationary ring between tight the contact, sealability is greatly improved and guarantees; Seal face is easy to precision machining, has very high surface finishment, can further improve sealability; Can improve the wear-resisting property and the corrosion resistance of seal face easily by the wear-resistant pad of inlaying on the seal face; the abominable Environmental Conditions that can well adapt to the grain slag aqueous medium; all faults of material filling type sealing have thoroughly been eliminated; significantly improved the long service life and the functional reliability of pump, suited in systems such as granulation pulp water, to adopt.

Description of drawings

Fig. 1 is the utility model structural representation.

The component label is respectively in the accompanying drawing: 7-pump shaft, 8-port lid, 9-clamping bolt, 10-stationary ring, 11-rotating ring, 12-spring bracket, 13-spring, 14-auxiliary seal ring, 15-wear-resistant pad, 16-sealed socket sleeve, 17-pump housing.

Embodiment

Consult Fig. 1.Owing to do not relate to the internal structure of pump, for clear the demonstration improved the position, Fig. 1 has only intercepted the seal section position between the pump shaft 7 and the pump housing 17.Of the present utility modelly mainly be improved to, change the packing seal mode between the pump shaft and the pump housing into the mechanical seal mode.Two stationary rings 10, two rotating rings 11, two spring brackets 12 and springs 13 during forming, mechanical seal device are arranged, two stationary rings 10 lay respectively at the seal arrangement seat hole that is positioned on the pump housing and the bottom of port lid 8, two rotating rings 11 are set with on pump shaft 7, rotate with pump shaft 7, so be rotating ring.The seal face of two rotating rings 11 is the seal face of corresponding two stationary rings 10 respectively, two elastic supports 12 are set on the pump shaft 7, be slidingly matched with pump shaft 7, the two ends of spring 13 respectively with the socket of the tail end of two elastic shelfs 13 coupling, the front end of two elastic shelfs 12 respectively with 11 sockets of two rotating rings, two elastic shelfs 12 make two rotating rings 11 under the effect of spring 13 seal face respectively with the tight sliding contact of seal face of two stationary rings 10, realize sealing.

Still consult Fig. 1.In the illustrated embodiment, the seal arrangement seat is provided with sealed socket sleeve 16 in the hole, port lid 8 should have corresponding interior exntension tubs section mutually, at this moment, the stationary ring 10 of bottom, seal arrangement seat hole is positioned at the bottom of sealed socket sleeve 16, and the interior exntension tubs of port lid 8 press on the exterior edge face of sealed socket sleeve 16 by clamping bolt 9 correspondences.

Still consult Fig. 1.The seal face of stationary ring 10, rotating ring 11 has the groove of annular, inlays wear-resistant pad 15 in it, and the material of wear-resistant seal pad is an aluminium oxide ceramics, has high wear resistance, corrosion resistance.

Still consult Fig. 1.Can set up auxiliary seal ring 14 respectively between two stationary rings 10 and sealed socket sleeve 16, the hole gland 8, to realize omnibearing sealing.

Claims

1. grain slag water system pump; the pump housing is arranged in the formation; between the pump shaft in the pump housing and the pump housing seal arrangement is arranged; it is characterized in that; described seal arrangement adopts mechanical seal; it has stationary ring [10] in forming; rotating ring [11]; spring bracket [12]; spring [13]; two stationary rings [10] lay respectively at the seal arrangement seat hole on the pump housing and the bottom of port lid [8]; two rotating rings [11] are set with on pump shaft [7]; seal face is the seal face of corresponding two stationary rings [10] respectively, the front end of two elastic supports [12] respectively with two rotating rings [11] socket; tail end is pegged graft with the two ends of spring [13] respectively.

2. grain slag water system pump according to claim 1 is characterized in that, is inlaid with wear-resistant pad [15] respectively on the seal face of described stationary ring [10], rotating ring [11].

3. grain slag water system pump according to claim 2 is characterized in that, between described two stationary rings [10] and seal arrangement seat hole, the hole gland [8] auxiliary seal ring [14] is arranged respectively.