CN202545282U

CN202545282U - Cutting type submersible sewage pump

Info

Publication number: CN202545282U
Application number: CN2012201213389U
Authority: CN
Inventors: 顾军
Original assignee: SHANGHAI LIANSHENG PUMP MANUFACTURING Co Ltd
Current assignee: SHANGHAI LIANSHENG PUMP MANUFACTURING Co Ltd
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-11-21
Anticipated expiration: 2022-03-27

Abstract

The utility model relates to a cutting type submersible sewage pump which comprises a submersible motor. A connection section is arranged below the submersible motor, a set of double-end-face mechanical seal is arranged in the middle of the connection section, the connection section is connected with a pump body under the connection section, the double-end-face mechanical seal in the middle of the connection section is in serial on a pump shaft to be fixed through a connection section press cover, a large channel impeller is arranged at the central position of the pump body, the center of an outlet of the large channel impeller is aligned at the center of an outlet of the pump body, and the large channel impeller is in serial on the pump shaft to be fixed by a nut. The cutting type submersible sewage pump further comprises a fixed cutter installed at the inlet position of the pump body. Three or more than three cutter heads are arranged on the inner circumference of the fixed cutter, a rotary cutter is arranged at the center of the inner circle of the fixed cutter, the rotary cutter is fixed on the pump shaft, two or more than two cutter heads are arranged on the outer circle of the rotary cutter, and the cutter heads of the fixed cutter are in tangency with the cutter heads of the rotary cutter externally and internally.

Description

The cutting type proof submersible sand discharging pump

Technical field

The utility model relates to a kind of proof submersible sand discharging pump, relates in particular to this submersible sewage pump structure.

Background technique

The cutting type proof submersible sand discharging pump of existing technology adopts dead knife and rotating knife front and back mounting structural mode; On dead knife, be provided with the several tangent of several flowing holes and rotating knife blade; Play dissection; Dead knife and rotating knife certainly will have certain clearance like this, in operation process, have fibre object and are wrapped in pump shaft through the slit and make it the stuck motor overheating that causes of pump shaft and burn out.

Summary of the invention

The utility model technical issues that need to address have provided a kind of cutting type proof submersible sand discharging pump, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is realized through following technological scheme:

The utility model comprises: a submersible motor: a connecting section is equipped with in the below of said submersible motor; One cover double mechanical seal is housed in the middle of the said connecting section; Said connecting section is connected with the pump housing of its below; Double mechanical seal string in the middle of the said connecting section is fixed through a connecting section gland on pump shaft; A major path impeller is settled in central position at the said pump housing; The export center of said major path impeller is alignd with the export center of the pump housing; Said major path impeller string is fixed through nut on pump shaft; Also comprise: dead knife is equipped with in the inlet at the said pump housing; Said dead knife inner circumference is provided with three or three above cutter head; At the inner ring center of dead knife a rotating knife is housed; Said rotating knife is fixed on the pump shaft; On the cylindrical of said rotating knife, be provided with two or two above cutter head; Tangent inside and outside the cutter head of said dead knife and the cutter head of rotating knife.

Compared with prior art, the beneficial effect of the utility model is: can cut the foreign material of larger volume, avoid the winding problem of fibre object simultaneously, thereby reach effects such as cutting foreign material and split fibre thing.

Description of drawings

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

Fig. 2 A is the main TV structure schematic representation of dead knife in the utility model.

Fig. 2 B is the right elevation of Fig. 2 A.

Fig. 3 is the main TV structure schematic representation of rotating knife in the utility model.

Fig. 4 is dead knife and the tangent structural representation of rotating knife in the utility model.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

Visible by Fig. 1, Fig. 2 A, Fig. 2 B, Fig. 3, Fig. 4: the utility model comprises: a submersible motor 1: a connecting section 2 is equipped with in the below of said submersible motor 1; One cover double mechanical seal 3 is housed in the middle of the said connecting section 2; Said connecting section 2 is connected with the pump housing 6 of its below; Double mechanical seal string in the middle of the said connecting section 2 is fixing through a connecting section gland 5 on pump shaft 4; A major path impeller 8 is settled in central position at the said pump housing 6; The export center of said major path impeller 8 is alignd with the export center of the pump housing 6; Said major path impeller 8 strings are fixing through nut 7 on pump shaft 4; Also comprise: dead knife 10 is housed in the inlet of the said pump housing 6; Said dead knife 10 inner circumferences are provided with three or three above cutter head 102; At the inner ring center of dead knife 10 rotating knife 9 is housed; Said rotating knife 9 is fixed on the pump shaft 4; On the cylindrical of said rotating knife 9, be provided with two or two above cutter head 901; Tangent inside and outside the cutter head of the cutter head of said dead knife 10 and rotating knife 9.

Cutting side at the cutter head of said dead knife 10 is provided with zigzag fashion 101.

Tangent structure inside and outside the utility model employing dead knife and the rotating knife.The dead knife inner circumference is provided with three or three above cutter head, and is provided with zigzag fashion in the cutting side of cutter head.Rotating knife is installed in the inner ring of dead knife, and rotating knife is fixed on the pump shaft, and the outer fenestra of rotating knife is provided with two or two above cutter head.Tangent through the rotation of driven by motor rotating knife, play the foreign material that can cut larger volume, avoid the problems such as winding of fibre object simultaneously, thereby reached effects such as cutting foreign material and split fibre thing.

The utility model is when setting dead knife three cutter head and rotating knife smatterer; Motor is under 3000 rev/mins situation; This cutting device per minute can reach 18000 cuttings, and the foreign material that make it larger volume are shredded, and dead knife and rotating knife are radial cuts simultaneously; Axially there is not reelable slit to avoid the problems such as winding of fibre object; Thereby reach effects such as cutting foreign material and split fibre thing, this apparatus structure is simple, and is easy for installation, wear-resistant, do not stop up, do not twine, have advantages such as volume is little, compact structure.

Claims

1. cutting type proof submersible sand discharging pump, comprising: a submersible motor: a connecting section is equipped with in the below of said submersible motor; One cover double mechanical seal is housed in the middle of the said connecting section; Said connecting section is connected with the pump housing of its below; Double mechanical seal string in the middle of the said connecting section is fixed through a connecting section gland on pump shaft; A major path impeller is settled in central position at the said pump housing; The export center of said major path impeller is alignd with the export center of the pump housing; Said major path impeller string is fixed through nut on pump shaft; It is characterized in that: also comprise: dead knife is equipped with in the inlet at the said pump housing; Said dead knife inner circumference is provided with three or three above cutter head; At the inner ring center of dead knife a rotating knife is housed; Said rotating knife is fixed on the pump shaft; On the cylindrical of said rotating knife, be provided with two or two above cutter head; Tangent inside and outside the cutter head of said dead knife and the cutter head of rotating knife.

2. cutting type proof submersible sand discharging pump according to claim 1 is characterized in that: the cutting side at the cutter head of said dead knife is provided with zigzag fashion.