CN2106248U

CN2106248U - Centrifugal water pump

Info

Publication number: CN2106248U
Application number: CN91221425.2U
Authority: CN
Inventors: 肖福俊; 肖国梁; 肖国柱
Original assignee: 肖福俊
Priority date: 1991-08-01
Filing date: 1991-08-01
Publication date: 1992-06-03

Abstract

The utility model discloses a centrifugal water pump. The utility model is characterized in that the water inlet end of the pump is positioned between a pump body and a bearing bracket, a sand swinging block [6] is arranged on a shaft in a water inlet box [3] with a water inlet pipe, the water inlet of the water inlet box is provided with a guide block [14] to control the flow direction of the water entering the pump body, and the sand swinging block is provided with a guide vane of which the direction is the same as the direction of torsion of an impeller blade to ensure the pressure acting on the position in the normal pressure or the micro negative-pressure in use and push the burden impurity deposited in the water inlet box to a suction end. Consequently the adaptability of the water pump is enhanced, the abrasion of fillers of the centrifugal water pump is decreased and the service life of the water pump is extended.

Description

Centrifugal water pump

The utility model relates to water pump, particularly Centrifugal water pump.

The Centrifugal water pump of current use, the Centrifugal water pump that uses of China rural area particularly, because the water source silt content is bigger, particularly when outlet needs certain pressure, the filler of the sealing part of its pump housing enters sediment contamination easily, packing seal was lost efficacy, the pump shaft serious wear, the working life of pump is low.

The purpose of this utility model provides a kind of Centrifugal water pump of new structure, makes pump adapt to above-mentioned water condition, and can proper functioning.

The purpose of this utility model is to realize like this.With the form structure basically identical of the pump that uses at present, entire pump all is installed on the base, and the pump housing is impeller and axle in it at an end of base, on the axle axle sleeve is arranged, and impeller is fastened on the axle by nut, and the port of the pump housing is sealed by gland ［ 10 ］.Filler in the stuffing box compresses sealing by Gland, and axle is supported by the bearing in the base-mounted bearing bracket stand.And the suction side of pump that is characterised in that of the present utility model is between the pump housing and bearing bracket stand, and an inlet water tank that has water inlet pipe mouth is installed on the pump housing end face of the side of the suction side on the pump housing, in inlet water tank, there is one to get rid of sand lump and be installed on the axle, and the flow direction of the guide pad control water inlet of a circular arc is arranged in water intake by the axle sleeve location.

Designed the blade identical on the sand lump getting rid of with the impeller blade torsional direction.Its effect is interior discharge of impeller that the silt particle that accumulates in the inlet water tank is pushed into the pump housing.

The utility model has the advantages that because the suction side has been changed between the bearing bracket stand and the pump housing, a rather than common end at pump, and, also have one to get rid of sand lump and push unnecessary silt particle to impeller in the inlet water tank.Like this, filler in feed-water end is provided with stuffing box is not operated under normal pressure or the little negative pressure by the effect of the pressure of water basically, by getting rid of sand lump unnecessary silt particle discharged, and, get rid of the big end of sand lump motive sealing face of end face formation, further strengthened its sealability stuffing box.

Therefore, the advantage of this pump is not only to be applied to clear water, and also can normally use in the water of sediment contamination, and the design at stuffing box place makes and can prolong 2.5-5.5 the working life of pump doubly.

Description of drawings: accompanying drawing 1 is a structural drawing of the present utility model.Drive part does not draw but does not influence understanding to pump structure among the figure.Fig. 2 is the A-A sectional view of inlet water tank.The pump housing in the accompanying drawings, 1.2, impeller.3, inlet water tank.4, cover.5, axle.6, get rid of sand lump.7, filler.8, Gland.9, nut.10, gland.11, base.12, bearing.13, bearing bracket stand.14, guide pad.15, water inlet pipe mouth.

Below in conjunction with the embodiment who provides in the accompanying drawing water pump of the present utility model is described in detail.

As shown in accompanying drawing 1, water pump is installed on the base ［ 11 ］, the pump housing ［ 1 ］ is fixed on an end of base, in the pump housing, be installed with by nut ［ 9 ］ and be fixed on the impeller ［ 2 ］ of axle on ［ 5 ］, axle ［ 5 ］ is by the supporting of the bearing bracket stand ［ 13 ］ of bearing ［ 12 ］, and unillustrated part is a transmission device in the other end accompanying drawing of axle ［ 5 ］, as belt pulley etc., an inlet water tank ［ 3 ］ has been installed in the suction side of pump in the suction side between axis body ［ 1 ］ and bearing bracket stand ［ 13 ］.This inlet water tank connects with the end face of the suction side of the pump housing, have a water inlet pipe mouth ［ 15 ］ on the inlet water tank, axle ［ 5 ］ in inlet water tank go up to be installed one and is got rid of sand lump ［ 6 ］ by cover ［ 4 ］ location, in addition, the guide pad ［ 14 ］ that a circular arc is arranged on the tank wall of water inlet, the direction of this guide pad control water inlet, what make that current enter inlet water tank is the inhalation port of guide vane wheel.The ear end face that gets rid of sand lump is a stuffing box, and filler ［ 7 ］ is arranged in it, is compressed sealing by Gland ［ 8 ］.

It is identical with the torsional direction of the blade of impeller to get rid of turning round to (bending direction or sense of rotation) of guide vane on the sand lump ［ 6 ］, and the pump housing of nut ［ 9 ］ end is sealed by gland ［ 10 ］.

Pump in use, water sucks from water intake, discharge by guide pad impeller to the pump housing, in the pump unnecessary pressure along the pump housing to the nut place, seal by gland ［ 10 ］ herein, can't leak, only return and sucked again, and in the inlet water tank because the effect of getting rid of sand lump ［ 6 ］ arranged, accumulate in herein silt particle by the effect of the guide vane of this piece, it is normal pressure or little negative pressure that the suction port that silt particle is pushed into impeller keeps the pressure at this place simultaneously, again owing to get rid of the big end of sand lump and closely contact with the tank wall of intaking, silt particle can't enter in the stuffing box at this, and water also can't leak outside from here.Like this, promptly realized the purpose that this practicality proposed, in general non-corrosiveness medium, can use safely.

Claims

1, a kind ofly is installed in having the pump housing [1] and being installed in impeller [2] and the bearing [12] of supporting axle [5] and the Centrifugal water pump of bearing bracket stand [13] on nut [9] stationary axle [5] in the pump housing [1] on the chassis [11], the suction side that it is characterized in that this pump is between the pump housing [1] and bearing bracket stand, the suction side is that an inlet water tank [3] of bringing hose nozzle [15] into has been installed on the side end of the suction side of the pump housing, in inlet water tank, there is a sand lump [6] that gets rid of that is installed on the axle [5] to locate, the flow direction of guide pad [14] the control water inlet of a circular arc is arranged in the water inlet by axle sleeve [4].

2, water pump in accordance with claim is characterized in that turning round to turning round to consistent with the blade of impeller ［ 2 ］ of the said guide vane that gets rid of sand lump ［ 6 ］.