CN212454842U - Stainless steel sewage dirt submerged motor pump - Google Patents

Abstract

The utility model discloses a stainless steel sewage filth submerged motor pump has simple structure, cutting effect's characteristics, and its technical scheme main points are including the barrel and the pump body, are equipped with the rotor shaft in the barrel, and the tip of rotor shaft is equipped with the impeller that is located the pump body, are equipped with the water inlet ring on the pump body, be equipped with the cutting disc on the outer terminal surface of water inlet ring, the impeller includes the back shroud and arranges the blade on back shroud one side in, and the front end axial of blade extends the water inlet intra-annular forward, and with the outer terminal surface parallel and level of water inlet ring, still is equipped with the cutting clearance between blade and the pump body inner wall, the utility model is suitable for a water pump technical field.

Description

Stainless steel sewage dirt submerged motor pump

Technical Field

The utility model belongs to the technical field of the water pump, refer in particular to a stainless steel sewage filth submerged motor pump.

Background

The sewage submersible electric pump is a sewage treatment device suitable for the fields of industry, construction, medical treatment, life and the like, is widely applied to sewage treatment of municipal engineering, wastewater treatment of the construction industry, sewage and domestic water treatment of hotels, sewage and wastewater treatment of hospitals, industrial sewage and other useless and harmful water in the fields of mines and the like, and is used for discharging sewage, wastewater, rainwater, urban domestic water and the like with solid particles and various long fibers.

The existing sewage submersible electric pump shell structure needs to be further improved, and the overall structural simplicity and cutting effect of the existing sewage submersible electric pump shell structure are improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stainless steel sewage filth submerged motor pump has simple structure, cutting effect's characteristics.

The purpose of the utility model is realized like this: the utility model provides a stainless steel sewage filth submerged motor pump, includes barrel and the pump body, is equipped with the rotor shaft in the barrel, and the tip of rotor shaft is equipped with the impeller that is located the pump body, is equipped with water inlet ring, its characterized in that on the pump body: the outer end face of the water inlet ring is provided with a cutting disc, the impeller comprises a rear cover plate and blades arranged on one side of the rear cover plate, the front ends of the blades axially extend into the water inlet ring and are flush with the outer end face of the water inlet ring, and a cutting gap is further arranged between the blades and the inner wall of the pump body.

The utility model discloses further set up to: the pump body is internally provided with an annular flow passage, the inner wall of the pump body is also provided with a drainage groove, one end of the drainage groove is positioned on the annular flow passage, and the other end of the drainage groove is positioned on the inner wall of the water inlet ring.

The utility model discloses further set up to: the escape trough is the arc structure, and the groove width of escape trough is by the one end that is located the annular flow way to the one end that is located the water inlet ring and is reducing gradually.

The utility model discloses further set up to: the cutting disc is provided with a plurality of water inlet holes, and the inner wall of each water inlet hole is provided with a plurality of cutting edges.

The utility model discloses further set up to: the cutting edge is provided with a saw-toothed convex structure.

The utility model discloses further set up to: the machine barrel is connected with the pump body through an oil chamber, the rotor shaft is provided with a double-end-face mechanical seal positioned in the oil chamber, and the rotating shaft is also provided with a single-end-face mechanical seal positioned in the pump body.

The utility model discloses further set up to: the end of the rotor shaft is also provided with an internal threaded hole, and the internal threaded hole is provided with a bolt for fixing the impeller.

By adopting the technical scheme, the method has the following advantages:

through the structural design of the semi-open impeller, the front end of the blade axially extends forwards to be flush with the outer end face of the water inlet ring, and the blade rotates relatively under the matching of the cutting disc, so that the blade can cut sundries flowing into a medium; a cutting gap is formed between the blade and the inner wall of the pump body, so that sundries in the medium are further torn when the blade rotates, and the cutting effect is improved;

the scrap discharge groove is convenient for discharging sundries in the medium to the outside, and the sundries in the medium are prevented from being blocked and winding the impeller blade;

the cutting disc is provided with a plurality of water inlet holes, a cutting edge is formed on the inner wall of each water inlet hole, and a saw-toothed convex structure is arranged on the cutting edge, so that the cutting effect can be improved;

when the product is applied to the working condition without a cutting function, the cutting disc can be omitted, the product can be used as a common sewage pump, and the product has strong overflowing capacity and good nondestructive effect on overflowing media;

the rotor shaft adopts two mechanical sealing structures, so that the sealing property is improved;

an internal threaded hole is processed on a shaft head of the electric pump rotor, and an impeller is fixed and locked on the rotor through a bolt;

the impeller is fixed by the bolts.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of an impeller of the present invention;

FIG. 3 is a schematic structural view of the pump body of the present invention;

FIG. 4 is a schematic structural view of a cutting plate according to the present invention;

the reference numbers in the figures are: 1. a barrel; 2. a pump body; 3. a rotor shaft; 4. an impeller; 5. a water inlet ring; 6. cutting the disc; 7. a rear cover plate; 8. a blade; 9. cutting the gap; 10. a drain tank; 11. a water inlet hole; 12. cutting a knife edge; 13. an oil chamber; 14. double end face mechanical sealing; 15. single-end mechanical sealing; 16. and (4) bolts.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 4:

the utility model provides a stainless steel sewage filth submerged motor pump, includes barrel 1 and the pump body 2, is equipped with rotor shaft 3 in the barrel 1, and the tip of rotor shaft 3 is equipped with the impeller 4 that is located the pump body 2, is equipped with inlet ring 5, its characterized in that on the pump body 2: be equipped with cutting disc 6 on the outer terminal surface of water inlet ring 5, impeller 4 includes back shroud 7 and arranges blade 8 on back shroud 7 one side in, and in blade 8's front end axial extended water inlet ring 5, and with the outer terminal surface parallel and level of water inlet ring 5, still be equipped with cutting clearance 9 between blade 8 and the 2 inner walls of the pump body.

The blades 8 can be two pieces and are in a layer spiral shape, the structure design of the semi-open type impeller 4 is adopted integrally, the front ends of the blades 8 axially extend forwards to be flush with the outer end face of the water inlet ring 5, and the blades rotate relatively under the matching of the cutting disc 6, so that the cutting function on sundries flowing into a medium can be realized; and the side end of the blade 8 is attached to the inner wall of the pump body 2, but a gap needs to be reserved to form a cutting gap 9, so that the cutting blade further tears sundries in the medium during rotation, and the cutting effect is improved.

The pump body 2 is internally provided with an annular flow passage, the inner wall of the pump body 2 is also provided with a drainage groove 10, one end of the drainage groove 10 is positioned on the annular flow passage, the other end of the drainage groove 10 is positioned on the inner wall of the water inlet ring 5, and the drainage groove 10 can play a role of downwards discharging sundries out of the pump body 2.

The discharge chute 10 is the arc structure, and the groove width of discharge chute 10 is by the one end that is located the annular flow path to the one end that is located water inlet ring 5 and reduce gradually, adopts above-mentioned structure, and the debris in the medium of being convenient for is quick outer arranging downwards, avoids debris jam, winding 4 blades 8 of impeller.

The cutting disc 6 is provided with a plurality of water inlets 11, the inner wall of each water inlet 11 is provided with a plurality of cutting edges 12, and the number of the cutting edges can be three, and the cutting edges are matched with the front ends of the blades 8 to play a cutting role.

The cutting edge 12 is provided with a saw-toothed convex structure to enhance the cutting effect.

The machine barrel 1 is connected with the pump body 2 through an oil chamber 13, a double-end-face mechanical seal 14 located in the oil chamber 13 is arranged on the rotor shaft 3, and a single-end-face mechanical seal 15 located in the pump body 2 is further arranged on the rotor shaft 3.

One end of the double-end-face mechanical seal 14 is abutted against the inner end face of the oil chamber 13, the other end of the double-end-face mechanical seal is abutted against the front end cover of the machine barrel 1 to play a role in sealing, the oil chamber 13 is used for introducing a cooling medium to play a role in cooling the double-end-face mechanical seal 14, one end of the single-end-face mechanical seal 15 is abutted against the outer wall of the oil chamber 13, and the other end of the single-end-face; and the sealing performance is improved through two mechanical sealing structures.

The tip of rotor shaft 3 still is equipped with the internal thread hole, is equipped with the bolt 16 that is used for fixed impeller 4 on the internal thread hole, through the connected mode of bolt 16, conveniently plays locking fixed action to impeller 4, and convenient the dismantlement.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (7)

1. The utility model provides a stainless steel sewage filth submerged motor pump, includes barrel (1) and the pump body (2), is equipped with rotor shaft (3) in barrel (1), and the tip of rotor shaft (3) is equipped with impeller (4) that are located pump body (2), is equipped with water inlet ring (5) on the pump body (2), its characterized in that: be equipped with cutting disc (6) on the outer terminal surface of water inlet ring (5), impeller (4) include back shroud (7) and arrange blade (8) on back shroud (7) one side in, the front end axial of blade (8) extends in water inlet ring (5), and with the outer terminal surface parallel and level of water inlet ring (5), still is equipped with between blade (8) and the pump body (2) inner wall and cuts clearance (9).

2. The stainless steel sewage sludge submersible electric pump as claimed in claim 1, wherein: be equipped with annular flow channel in the pump body (2), still be equipped with escape groove (10) on the inner wall of pump body (2), the one end of escape groove (10) is located annular flow channel, and the other end of escape groove (10) is located the inner wall of water inlet ring (5).

3. The stainless steel sewage sludge submersible electric pump of claim 2 wherein: the drain groove (10) is of an arc-shaped structure, and the groove width of the drain groove (10) is gradually reduced from one end positioned in the annular flow passage to one end positioned in the water inlet ring (5).

4. The stainless steel sewage sludge submersible electric pump as claimed in claim 1, wherein: the cutting disc (6) is provided with a plurality of water inlet holes (11), and the inner wall of each water inlet hole (11) is provided with a plurality of cutting edges (12).

5. The stainless steel sewage sludge submersible electric pump of claim 4 wherein: the cutting edge (12) is provided with a saw-toothed convex structure.

6. The stainless steel sewage sludge submersible electric pump as claimed in claim 1, wherein: the machine barrel (1) is connected with the pump body (2) through an oil chamber (13), a double-end-face mechanical seal (14) located in the oil chamber (13) is arranged on the rotor shaft (3), and a single-end-face mechanical seal (15) located in the pump body (2) is further arranged on the rotor shaft (3).

7. The stainless steel sewage sludge submersible electric pump as claimed in claim 1, wherein: the end part of the rotor shaft (3) is also provided with an internal threaded hole, and the internal threaded hole is provided with a bolt (16) for fixing the impeller (4).

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