Sewage pump

Abstract

The utility model provides a sewage pump and belongs to the field of pumps. The problem that a sewage pump is easily blocked is solved. The sewage pump comprises a pump body with a water inlet port, a flow guide cylinder is arranged at the water inlet port of the pump body, a plurality of water passing holes are evenly distributed in the circumferential direction of the side wall of the flow guide cylinder, a cutting device is arranged in the flow guide cylinder and comprises a cutting cutterhead and an auxiliary cutterhead, and the cutting cutterhead and the auxiliary cutterhead are both in transmission connection with the conveying end in the pump body through a transmission shaft. A plurality of pairs of cutting blades extend outwards in the radial direction of the cutting cutterhead, each pair of blades are oppositely arranged, every two adjacent pairs of cutting blades are oppositely arranged in the vertical direction, a plurality of auxiliary blades extend outwards in the radial direction of the auxiliary cutterhead, and inclined folded edges are arranged at the ends of the auxiliary blades. A plurality of arc-shaped grooves of a semi-arc structure are formed in the outer edges of the auxiliary blades. The utility model has the advantage of anti-clogging.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the pump field relates to a sewage pump. BACKGROUND

[0002] With the development of society, people's living standards improve, the use and demand of water resources are also more and more big, this has caused a large number of domestic sewage discharge, and many cases sewage transport needs special pumping device, water pump as a kind of water-lifting equipment, water can be pumped from low to high, so can be very suitable for transporting domestic sewage, domestic sewage contains many solid particles and long fiber dirt, so there is a sewage pump for transporting domestic sewage.

[0003] The existing sewage pump when using, because sewage mixed with all kinds of rubbish, sewage in water pipe and water pump content easy to cause blockage, lead to sewage pump can not work, and need artificial regular maintenance cleaning, thereby increase the labor cost. SUMMARY

[0004] The utility model discloses a sewage pump to solve the above problems.

[0005] The utility model discloses a sewage pump, including the pump body with the water inlet port, its characterized in that, be located the water inlet port of pump body is provided with the fairlead, the fairlead lateral wall is evenly distributed with a plurality of water passing holes;

[0006] The fairlead is internally provided with a cutting device for cutting and crushing impurities;

[0007] The cutting device includes oppositely arranged cutting cutter and auxiliary cutter for assisting cutting;

[0008] The cutting cutter and the auxiliary cutter are both transmission connected with the conveying end inside the pump body through the transmission shaft, and the sewage pump can synchronously drive the auxiliary cutter and the cutting cutter to rotate when working;

[0009] The cutting cutter is radially outwardly extended with a plurality of pairs of cutting blades, each pair of blades is oppositely arranged, and adjacent two pairs of cutting blades are oppositely arranged in the vertical direction.

[0010] The auxiliary cutter is radially outwardly extended with a plurality of auxiliary blades, an inclined folding edge is arranged at the end of the auxiliary blade, and a plurality of arc-shaped grooves in semicircular arc structure are formed in the outer edge of the auxiliary blade to prevent impurities from winding.

[0011] In the above-mentioned sewage pump, the shape of the water passing hole of the fairlead is one of a circle, an ellipse or a long strip.

[0012] In the sewage pump, the number of the cutting blades arranged on the cutting disc is 2-6.

[0013] In the sewage pump, the number of the auxiliary blades of the auxiliary disc is 3-8, the inclination angle of the inclined flange of the end of the auxiliary blade is 30-75°, and the arc-shaped grooves on the auxiliary blade are evenly distributed along the edge.

[0014] In the sewage pump, the transmission shaft is a single shaft structure, and the cutting disc and the auxiliary disc are fixed on the same transmission shaft at a certain distance in the axial direction.

[0015] Compared with the prior art, the sewage pump greatly solves the core pain points of the traditional sewage pump in handling sewage containing solid impurities, fibers and plastic bags, i.e., easy to block and easy to entangle. Through the innovative design of the pre-filtering of the flow guide cylinder, the double-stage cooperative cutting and crushing, the vertical misalignment of the main cutting blade, the anti-entanglement arc-shaped groove of the auxiliary blade and the single-shaft synchronous driving, the sewage pump realizes excellent anti-blocking performance, super crushing efficiency and excellent anti-entanglement capability, thereby significantly improving the passing capacity, operation reliability and application range of the pump and effectively reducing the maintenance cost. The sewage pump is particularly suitable for application in the sewage treatment scene with harsh working conditions and complex impurities. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the sewage pump.

[0017] Figure 2 is a schematic diagram of the partial cross-sectional structure of the sewage pump.

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the cutting device of the sewage pump.

[0019] In the figure, 1 is a pump body, 2 is a flow guide cylinder, 3 is a water passage, 4 is a cutting disc, 5 is an auxiliary disc, 6 is a cutting blade, 7 is an auxiliary blade, 8 is an inclined flange, 9 is an arc-shaped groove, and 10 is a transmission shaft. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the utility model and a further description of the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0021] As Figure 1 , Figure 2 , Figure 3As shown, the sewage pump comprises a pump body 1 with a water inlet port, a flow guide cylinder 2 is arranged at the water inlet port of the pump body 1, and a plurality of water passing holes 3 are uniformly distributed on the side wall of the flow guide cylinder 2; the flow guide cylinder 2 is internally provided with a cutting device for cutting and crushing impurities; the cutting device comprises oppositely arranged cutting cutter 4 and auxiliary cutter 5 for assisting cutting; the cutting cutter 4 and the auxiliary cutter 5 are both drivingly connected with the conveying end inside the pump body 1 through a transmission shaft 10, and the sewage pump can synchronously drive the auxiliary cutter 5 and the cutting cutter 4 to rotate during operation; the cutting cutter 4 is radially outwardly extended with a plurality of pairs of cutting blades 6, each pair of blades is oppositely arranged, and adjacent two pairs of cutting blades 6 are oppositely arranged in the vertical direction; the auxiliary cutter 5 is radially outwardly extended with a plurality of auxiliary blades 7, an inclined folded edge 8 is arranged at the end of the auxiliary blade 7, and a plurality of arc-shaped grooves 9 in semicircular arc structure are arranged on the outer edge of the auxiliary blade 7 to prevent impurities from winding. The shape of the water passing hole 3 of the flow guide cylinder 2 is one of circular, elliptical or long strip. The number of cutting blades 6 arranged on the cutting cutter 4 is 2-6 pairs. The number of auxiliary blades 7 of the auxiliary cutter 5 is 3-8, the inclination angle of the inclined folded edge 8 at the end of the auxiliary blade 7 is 30°-75°, and the arc-shaped grooves 9 on the auxiliary blade 7 are uniformly distributed along the edge. The transmission shaft 10 is a single shaft structure, and the cutting cutter 4 and the auxiliary cutter 5 are fixed on the same transmission shaft 10 at a certain distance along the axial direction.

[0022] The sewage pump greatly solves the core pain points of traditional sewage pumps, such as easy to block and easy to wind when treating sewage containing solid impurities, fibers and plastic bags. Through the innovative design of pre-filtering by the flow guide cylinder 2, double-stage collaborative cutting and crushing, main cutting blade vertical dislocation, auxiliary blade anti-winding arc-shaped groove 9 and single-shaft synchronous driving, excellent anti-blocking performance, super crushing efficiency and excellent anti-winding ability are realized, thereby significantly improving the passing capacity, operation reliability and application range of the pump, and effectively reducing the maintenance cost. It is especially suitable for application in harsh working conditions and complex impurity sewage treatment scenes.

[0023] Before the sewage enters the pump cavity main impeller, the flow guide cylinder 2 at the water inlet end is used to preliminarily screen and block large impurities, and guide them into the built-in double-stage cutting and crushing area. Through the cooperative action of the synchronously high-speed rotating auxiliary cutter 5 (anti-winding, pretreatment) and the cutting cutter 4 (high-efficiency shearing, multi-stage crushing), the large solid impurities, fibers, plastic bags and the like in the sewage are completely crushed into fine particles. The crushed particles smoothly pass through the pump cavity with the water flow, are pressurized by the impeller and then discharged, thereby effectively preventing the pump from being blocked and ensuring the continuous and stable operation of the sewage pump.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0025] Although the terms are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A sewage pump comprising a pump body (1) with a water inlet port, characterized in that, A flow guide cylinder (2) is arranged at the water inlet port of the pump body (1), and a plurality of water passing holes (3) are uniformly distributed on the side wall of the flow guide cylinder (2); The flow guide cylinder (2) is internally provided with a cutting device for cutting and crushing impurities; The cutting device comprises oppositely arranged cutting cutter heads (4) and auxiliary cutter heads (5) for assisting cutting; The cutting cutter heads (4) and the auxiliary cutter heads (5) are both in transmission connection with the internal conveying end of the pump body (1) through a transmission shaft (10), so that the auxiliary cutter heads (5) and the cutting cutter heads (4) can be synchronously driven to rotate when the sewage pump is working; The cutting cutter heads (4) are radially outwardly extended and provided with a plurality of pairs of cutting blades (6), each pair of blades is oppositely arranged, and adjacent two pairs of cutting blades (6) are oppositely arranged in the vertical direction. The auxiliary cutter heads (5) are radially outwardly extended and provided with a plurality of auxiliary blades (7), the end portions of the auxiliary blades (7) are provided with inclined folded edges (8), and the outer edges of the auxiliary blades (7) are provided with a plurality of arc-shaped grooves (9) in a semicircular arc structure to prevent impurities from winding.

2. A sewage pump according to claim 1, wherein The shape of the water passing hole (3) of the flow guide cylinder (2) is one of a circle, an ellipse or a long strip.

3. A sewage pump according to claim 1, wherein The number of the cutting blades (6) arranged on the cutting cutter heads (4) is 2-6 pairs.

4. A sewage pump according to claim 1, wherein The number of the auxiliary blades (7) of the auxiliary cutter heads (5) is 3-8, the inclination angle of the inclined folded edges (8) at the end portions of the auxiliary blades (7) is 30°-75°, and the arc-shaped grooves (9) on the auxiliary blades (7) are uniformly distributed along the edges.

5. A sewage pump according to claim 1, wherein The transmission shaft (10) is a single shaft structure, and the cutting cutter heads (4) and the auxiliary cutter heads (5) are fixed on the same transmission shaft (10) at a certain distance in the axial direction.

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