A kind of corrosion-and high-temp-resistant centrifugal pump
Technical field
The utility model relates to a kind of centrifugal pump, particularly relates to a kind of centrifugal pump that metal bath is carried that is used for.
Background technique
At present, have minority producer to release to adopt the pump that metal bath is carried that is used for of alloy material manufacturing, its price is expensive, and alloy also in use progressively dissolved, and causes metal ingredient to pollute.Owing to these reasons, such pump is not used widely.
Also there are methods such as the surface of employing sprays, inserts that the graphite part is used in the pump product, the parts of surface graphite spraying are fixed on other structure, to play corrosion resistant effect, this mode still can only be used for the not high medium transport of temperature, carry and can not be used for metal bath, and graphite material comes off easily.
For above-mentioned reasons, runner type is still adopted in the conveying of present domestic corrosion metals melt, and this mode exists the setup time of releasing long, and the chute thermal loss is big, and burning is serious, defective such as cost of production height, efficient are low.
The model utility content
The utility model will solve existing centrifugal pump and be difficult to corrosion-and high-temp-resistant, be not useable for the problem that the corrosivity high-temperature fusant is carried, provide a kind of and have good corrosion-resistant, resistance to high temperature, and the centrifugal pump that is used for the metal bath conveying simple in structure, that be easy to make.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: on a support motor is installed, machine shaft rotates the graphite transmission shaft by transmission shaft downwards, and graphite transmission shaft lower end connects the graphite impeller in the graphite pump housing; The outage that radial arrangement is arranged in the graphite impeller, imbibing hole is arranged at the graphite impeller bottom; The vortex runner of graphite pump housing communicates with the graphite drain pipe.
In the utility model, graphite impeller adopts the straight hole impeller, promptly establishes a plurality of straight hole passages in the graphite disk body of impeller as outage, and the imbibing hole of outage and impeller constitutes fluid passage.When adopting the machining graphite impeller, the manufacturing of being more convenient for of straight hole impeller, and more durable.
During use, graphite transmission shaft lower end and the graphite impeller that is attached thereto, graphite pump housing and graphite drain pipe lower end are stretched in the high temperature corrosion liquid, starting electrical machinery is realized the conveying from the bottom to top of high temperature corrosion liquid.
Centrifugal pump of the present utility model is not only corrosion-resistant, high temperature resistant, long service life, and also pump body structure is simple, easily makes, cost is low, and graphite component is changed convenient, system's installation, use, easy to maintenance; Pollution-free to metal bath, can guarantee the purity of transferring metal; The utility model can be widely used in the conveying of corrosion metals, improves its transfer efficiency, reduces its energy loss and lowers oxidation.
Description of drawings
Fig. 1 is the utility model overall construction drawing;
Fig. 2 is along the A-A line sectional view among Fig. 1;
Among the figure 1, motor, 2, support, 3, coupling, 4, bearing support, 5, rotating shaft, 6, outlet(discharge) flange, 7, Hooks coupling universal coupling, 8,9, flange, 10, the graphite transmission shaft, 11, graphite drain pipe, 12, graphite impeller, 13, the graphite pump housing, 14, imbibing hole, 15, outage, 16, supporting post, 17, flange, 18, the vortex runner.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to accompanying drawing, on support 2 top boards, erect motor 1 is installed, the bearing support 4 that thrust bearing is housed is fixed on the support 2 middle part platens, machine shaft connects rotating shaft 5 by coupling 3, rotating shaft is passed bearing support 4 and is connect Hooks coupling universal coupling 7, connect graphite transmission shaft 10 by flange 9 again, the graphite impeller 12 of graphite transmission shaft lower end in the graphite pump housing 13 that is threaded.Also have one on the graphite pump housing with the graphite supporting post 16 that is being threaded, be fixed on the support base plate by flange 17 on the supporting post.Graphite drain pipe 11 lower ends communicate with the vortex runner 18 of graphite pump housing 13, and the upper end of graphite drain pipe 11 is fixed on the through hole of support base plate by flange 8, is fixed with outlet(discharge) flange 6 above the base plate of through hole.
The structure of graphite impeller 12 is, radially processes the outage 15 of 6~10 left-handed or dextrorotation in a graphite disk body, and outage is a cylindrical hole, and there is imbibing hole 14 at the wheel bottom center.