CN102444609B

CN102444609B - Anti-clog submersible sewage pump

Info

Publication number: CN102444609B
Application number: CN 201010500477
Authority: CN
Inventors: 伍斌强; 唐卫平; 陈毅; 周科文; 伍奕
Original assignee: Xunda Technology Group Co Ltd
Current assignee: Xunda Technology Group Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2013-11-06
Anticipated expiration: 2030-09-30
Also published as: CN102444609A

Abstract

The invention relates to a submersible sewage pump which comprises a pump body, an impeller and a pump cover, wherein a convex ring of the impeller extends into the pump cover. The submersible sewage pump is characterized in that a floating bushing is further mounted between the convex ring and the pump cover; a pressing block is mounted on the pump cover; an elastic element is arranged in the pressing block and used for propping against the lower end face of the floating bushing; and the upper end face of the floating bushing props against an impeller cover of the impeller. The submersible sewage pump has a simple structure. By using the pump provided by the invention, the problem that the submersible sewage pump is easily clogged by foreign bodies is solved, and the foreign bodies can be cut off and smashed, thus the normal operation of the submersible sewage pump is achieved. The submersible sewage pump can be used for the irrigation and drainage of various polluted water and waster water containing foreign bodies.

Description

Anti-clog submersible sewage pump

Technical field

The present invention relates to a kind of submerged pump, particularly relate to a kind of submerged pump that prevents that foreign material from stopping up.

Background technique

Owing to containing multiple foreign material in the medium that is transferred, cause submerged pump easily to stop up, in pump chamber, the axial clearance of impeller and pump cover is less usually, and foreign material easily make submerged pump cause axial obstruction, and pump power is increased or stall, even motor damage; And axial clearance is strengthened, can increase again volumetric loss, reduce filth-discharging effect; Simple impeller and the pump cover radial fit that adopts pump also can be assembled dirty foreign material stall pump thereby work long hours in the gap.

Summary of the invention

The object of the invention is to solve above-mentioned deficiency of the prior art, a kind of simple in structure, high working efficiency is provided, can solves the Anti-clog submersible sewage pump of foreign material plugging fault comprehensively.

The present invention is achieved by the following technical solutions.

A kind of Anti-clog submersible sewage pump comprises the pump housing, impeller and pump cover, and the bulge loop of impeller stretches into pump cover, it is characterized in that also being equipped with between bulge loop and pump cover floating bushing, briquetting is housed on pump cover, has elastic component in briquetting and withstand the lower end surface of floating bushing, the impeller cover of impeller is withstood in the upper-end surface of floating bushing; Be close to impeller cover thereby withstand floating bushing by elastic element, be equivalent to a stuffing box gland, can prevent current and foreign material from the pump chamber to the impeller bulge loop and the radial clearance of floating bushing in flow, the protection impeller can not be stuck.

In described briquetting, elastic element is Compress Spring.

Be fixed with cutting blade on described bulge loop, be fixed with ledger-plate on described pump cover.

Described floating bushing end face has groove, and described ledger-plate is placed in groove.

The axial clearance cooperation that the present invention changes in the past is that radial clearance coordinates, and impeller and pump cover have just had enough axial spaces, do not affect again pump chamber, sewage and foreign material directly enter impeller blade from the pump cover suction port and discharge the pump housing again, can avoid the axial obstruction of impeller and pump cover fully; By filling floating bushing between impeller bulge loop and pump cover, and withstand floating bushing by elastic press and be close to impeller cover, can stop current and foreign material to flow from the radial clearance of impeller bulge loop and floating bushing, avoid the radial blockage of impeller and pump cover; The present invention can also cut off the foreign material chopping by combination moving, ledger-plate, has more guaranteed the unimpeded of pump and waste pipe.The present invention is applicable to various sewage and contains the irrigation and drainage of foreign material waste water, is specially adapted to the biomass pool cleaning and takes out slag.

Description of drawings

Fig. 1 is the structural representation of Anti-clog submersible sewage pump;

Fig. 2 is the structural representation of impeller of the present invention;

Fig. 3 is the structural representation of floating bushing of the present invention;

Fig. 4 is the schematic diagram of cutting blade of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail:; , can prevent that current and foreign material from flowing from the radial clearance of impeller and pump cover, the protection impeller can not be stuck.

As shown in Figure 1, a kind of Anti-clog submersible sewage pump is equipped with impeller 2 on the central shaft of the pump housing 1, and pump cover 3 is fastenedly connected by bolt and the pump housing 1.Impeller 2 comprises impeller base 21, impeller blade 22 and impeller cover 23, and impeller blade 22 adopts turbine structure, and a bulge loop 24 is arranged on impeller cover 23, bulge loop 24 stretches into the suction port of pump cover 3, bulge loop 24 can rotate in the suction port of pump cover 3 with impeller 2, and the center of bulge loop 24 is emptying aperture, is communicated with turbine bore.Between bulge loop 24 and pump cover 3, floating bushing 4 is housed also, be fixed with briquetting 5 with screw on pump cover 3, the lower end surface that Compress Spring in briquetting 5 withstands floating bushing 4, make the upper-end surface of floating bushing 4 be close to the impeller cover 23 of impeller 2 by elastic force, stop current and foreign material to flow from the radial clearance of impeller bulge loop 24 and floating bushing 4, avoid impeller 2 radial blockage.For preventing that briquetting 5 from rotating, and also is equipped with locating stud 52 with pump cover 3.

During pump work, impeller blade 22 rotates in pump chamber, produces centrifugal force, and sewage and foreign material suck from pump cover 3, enters pump chamber through the hollow hole of centre of suction port, bulge loop 24 and discharges the pump housing, and foreign material can not stop in pump substantially.Because impeller 2 has adopted radial clearance to coordinate with pump cover 3, thus impeller cover 23 and pump cover 3 axial clearance can increase, can not affect pump chamber yet, thereby can prevent the axial obstruction of impeller 2 and pump chamber; The impeller cover 23 of impeller 2 is close in the upper-end surface of floating bushing 4 by elastic force, be equivalent to a stuffing box gland, and pump chamber and bulge loop external series gap are intercepted, and stops current and foreign material to flow from the radial clearance of impeller bulge loop 24 and floating bushing 4, avoids impeller 2 radial blockage.End face at impeller cover 23 arranges several scrape bits sheets 26 consistent with the impeller blade direction, more plays protection, anti-stifled effect.

For preventing that foreign material long in sewage are wound around impeller 2 or stop up waste pipe, end face at the bulge loop 24 of impeller cover 23 starts cutter groove 25 setting-in cutting blades 6, the ledger-plate 7 that matches with cutting blade 6 is housed on pump cover 3, gap between two blades is very little, is about 0.05～0.08mm, forms shear blade, when pump operation, ledger-plate 7 keeps motionless, and cutting blade 6 is with impeller 2 high speed rotating, and the foreign material that suck the pump housing are the tearable chopping; As shown in Figure 3, the lower end surface of floating bushing 4 has the groove 41 of two symmetries.When ledger-plate 7 is installed, ledger-plate 7 placements can be arranged in groove 41, floating bushing 4 can not be rotated, the better effects if of leakproof; As shown in Figure 4, all there is chamfering the both sides, the back side of two blades, can lower the resistance that sewage is sucked.Cutting blade 6 and top blade 7 all adopt stainless steel high hard alloy material, can prevent the blade corrosion and extend operating life.

Claims

1. Anti-clog submersible sewage pump, comprise the pump housing (1), impeller (2) and pump cover (3), the bulge loop (24) of impeller (2) stretches into pump cover (3), it is characterized in that between bulge loop (24) and pump cover (3), floating bushing (4) being housed also, briquetting (5) is housed on pump cover (3), have elastic component in briquetting (5) (51) withstand the lower end surface of floating bushing (4), the impeller cover (23) of impeller (2) is withstood in the upper-end surface of floating bushing (4).

2. Anti-clog submersible sewage pump according to claim 1, is characterized in that the interior elastic element of described briquetting (5) (51) is Compress Spring.

3. Anti-clog submersible sewage pump according to claim 1, is characterized in that being fixed with cutting blade (6) on described bulge loop (24), is fixed with ledger-plate (7) on described pump cover (3).

4. Anti-clog submersible sewage pump according to claim 3, is characterized in that described floating bushing (4) end face has groove (41), and described ledger-plate (5) is placed in groove (41).