High-efficiency cutting type sewage pump

Abstract

The utility model provides a high-efficiency cutting type sewage pump, and belongs to the field of pumps. The problem that an existing sewage pump is prone to being blocked is solved. The high-efficiency cutting type sewage pump comprises a pump body with a water inlet and a water outlet, an impeller assembly and a driving motor, a cutting mechanism is arranged at the water inlet of the pump body and comprises a connecting cylinder, a cutting blade, two mincing blades and a transmission shaft, and the transmission shaft is connected with an output shaft of the driving motor through a coupler. The mincing blades and the cutting blades are sequentially installed on the transmission shaft at intervals, the cutting blades are located between the two mincing blades, each cutting blade is provided with a plurality of cutting edges used for cutting and mincing, each cutting edge is provided with a sawtooth part used for improving the cutting efficiency, and the two cutting blades are of an arch-shaped structure. The blades are oppositely arranged at the upper and lower ends of the cutting blade. The device has the advantages of high efficiency and blockage prevention.

Description

Technical Field

[0001] The utility model belongs to the field of pumps and relates to a sewage pump, in particular to a high-efficiency cutting type sewage pump. Background Art

[0002] Water pumps are a type of centrifugal pump and have many forms: submersible and dry. Currently, the most common submersible pump is the WQ submersible sewage pump. The most common dry sewage pumps are the W-type horizontal sewage pump and the WL-type vertical sewage pump. They are mainly used to transport urban sewage, feces or liquid media containing solid particles such as fiber and paper scraps. The temperature of the transported medium is usually not more than 80°C.

[0003] Since the transported medium contains fibers that are easy to entangle or bunch, the flow channel of this type of pump is easy to be blocked. Once the pump is blocked, it will not work normally, and even burn the motor, resulting in poor sewage discharge, which has a serious impact on urban life and environmental protection. Summary of the invention

[0004] The purpose of the utility model is to provide a high-efficiency cutting type sewage pump to solve the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a high-efficiency cutting type sewage pump, comprising a pump body with a water inlet and a water outlet, an impeller assembly located in the pump body, and a driving motor for driving the impeller assembly to work, characterized in that a cutting mechanism for cutting and mincing and having a blocking prevention function is provided at the water inlet of the pump body;

[0006] The cutting mechanism includes a connecting cylinder connected to the water inlet of the pump body, a cutting blade for cutting and mincing, two mincing blades for preventing entanglement and clogging and mincing, and a transmission shaft connected to the output shaft of the driving motor and capable of driving the cutting blade and the mincing blade to rotate;

[0007] The transmission shaft is connected to the output shaft of the driving motor via a coupling;

[0008] The mincing blade and the cutting blade are installed on the transmission shaft in sequence and at intervals, and the cutting blade is located between the two mincing blades;

[0009] The cutting blade has a plurality of cutting edges for cutting and mincing, and each cutting edge is provided with a serration portion for improving cutting efficiency;

[0010] The two cutting blades are arched structures and are arranged at the upper and lower ends of the cutting blade in an opposite structure.

[0011] In the above-mentioned high-efficiency cutting-type sewage pump, the cutting mechanism and the impeller assembly are arranged in a coaxial structure, and the cutting blades and the mincing blades cooperate with the transmission shaft and the coupling transmission structure to achieve synchronous rotation with the impeller assembly.

[0012] In the above-mentioned high-efficiency cutting-type sewage pump, the number of the plurality of cutting blades is 4 and they are arranged in a cross-shaped structure, and the cutting blades are arranged in an axially downwardly curved structure.

[0013] In the above-mentioned high-efficiency cutting-type sewage pump, the cutting mechanism adopts a detachable split structure and is arranged at the water inlet of the pump body, which is convenient for later disassembly, cleaning and maintenance.

[0014] In the above-mentioned high-efficiency cutting type sewage pump, the mincing blade and the cutting blade are made of hard alloy steel.

[0015] Compared with the prior art, the high-efficiency cutting-type sewage pump has a simple structure. It uses the cutting blade and the mincing blade structure to effectively achieve rapid cutting and mincing of fibers that are often contained in the medium and are easy to entangle or bunch, preventing them from being entangled on the centrifugal impeller, thereby causing the sewage pump to fail to work properly and its drive motor to burn out. At the same time, the structure effectively improves the working efficiency and working intensity of the sewage pump, and greatly extends the service life of the sewage pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a half-section structural diagram of this high-efficiency cutting type sewage pump.

[0017] Figure 2 It is a partial three-dimensional structural schematic diagram of the cutting mechanism of this high-efficiency cutting type sewage pump.

[0018] Figure 3 It is a schematic diagram of the three-dimensional explosion structure of the cutting blade and the shredding blade of the high-efficiency cutting type sewage pump.

[0019] In the figure, 1, pump body; 2, impeller assembly; 3, driving motor; 4, cutting blade; 5, mincing blade; 6, transmission shaft; 7, coupling; 8, cutting edge; 9, serrated part; 10, connecting tube; 11, opening groove. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3As shown, the high-efficiency cutting-type sewage pump comprises a pump body 1 with a water inlet and a water outlet, an impeller assembly 2 located in the pump body 1, and a driving motor 3 for driving the impeller assembly 2 to work. A cutting mechanism for cutting and mincing and having a blocking prevention function is arranged at the water inlet of the pump body 1. The cutting mechanism comprises a connecting cylinder 10 connected to the water inlet of the pump body 1, a cutting blade 4 for cutting and mincing, two mincing blades 5 for preventing entanglement and blockage and mincing, and a transmission shaft 6 connected to the output shaft of the driving motor 3 and capable of driving the cutting blade 4 and the mincing blade 5 to rotate. The transmission shaft 6 is connected to the output shaft of the driving motor 3 by a coupling 7. The mincing blade 5 and the cutting blade 4 are installed on the transmission shaft 6 in sequence at intervals. The cutting blade 4 is located between the two mincing blades 5. The cutting blade 4 has a plurality of cutting edges 8 for cutting and mincing. Each cutting edge 8 is provided with a serration portion 9 for improving the cutting efficiency. The two cutting blades 4 are arch structures and are arranged at the upper and lower ends of the cutting blade in a relative structure.

[0022] The above structure is simple, and the cutting blade 4 and the mincing blade 5 cooperate to effectively realize the rapid cutting and mincing of fibers that are often contained in the medium and are easy to be entangled or bunched, so as to prevent them from being entangled on the centrifugal impeller, thereby causing the sewage pump to fail to work normally and the driving motor 3 to burn out. At the same time, the structure effectively improves the working efficiency and working intensity of the sewage pump, and greatly extends the service life of the sewage pump.

[0023] To further elaborate, in order to achieve synchronous transmission between the cutting mechanism and the impeller assembly 2, the cutting mechanism and the impeller assembly 2 are arranged in a coaxial structure, and the cutting blades and the mincing blades cooperate with the transmission structure of the transmission shaft 6 and the coupling 7 to achieve synchronous rotation with the impeller assembly 2.

[0024] To further elaborate, in order to improve the cutting and mincing efficiency, the number of the plurality of cutting blades 8 is four and they are arranged in a cross-shaped structure, and the cutting blades 8 are arranged in an axially downwardly bent structure.

[0025] To elaborate further, in order to facilitate regular maintenance and cleaning, the cutting mechanism adopts a detachable split structure and is arranged at the water inlet of the pump body 1, which is convenient for later disassembly, cleaning and maintenance.

[0026] To further elaborate, in order to improve the cutting and mincing efficiency, the mincing blade 5 and the cutting blade 4 are made of hard alloy steel.

[0027] To elaborate further, in order to facilitate the medium to quickly enter the pump body 1, a plurality of opening grooves 11 are opened on the side wall of the connecting tube 10 to facilitate the medium to quickly enter, and the plurality of opening grooves 11 are arranged and distributed in a circumferential direction along the central axis of the connecting tube 10 at intervals.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0029] Although the terms such as pump body 1, impeller assembly 2, drive motor 3, cutting blade 4, mincing blade 5, transmission shaft 6, coupling 7, cutting edge 8, serration 9, connecting tube 10, opening slot 11 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A high-efficiency cutting-type sewage pump, comprising a pump body (1) having a water inlet and a water outlet, an impeller assembly (2) located in the pump body (1), and a drive motor (3) for driving the impeller assembly (2), characterized in that: The pump body (1) is provided with a cutting mechanism at the water inlet for cutting and crushing and having a blocking prevention function; The cutting mechanism comprises a connecting tube (10) connected to the water inlet of the pump body (1), a cutting blade (4) for cutting and mincing, two mincing blades (5) for preventing entanglement and blockage and mincing, and a transmission shaft (6) connected to the output shaft of the driving motor (3) and capable of driving the cutting blade (4) and the mincing blade (5) to rotate; The transmission shaft (6) is connected to the output shaft of the drive motor (3) via a coupling (7); The mincing blade (5) and the cutting blade (4) are installed on the transmission shaft (6) in sequence and at intervals, and the cutting blade (4) is located between the two mincing blades (5); The cutting blade (4) has a plurality of cutting edges (8) for cutting and mincing, and each cutting edge (8) is provided with a sawtooth portion (9) for improving cutting efficiency; The two cutting blades (4) are of an arched structure and are arranged at the upper and lower ends of the cutting blade in an opposing structure.

2. A high-efficiency cutting type sewage pump according to claim 1, characterized in that: The cutting mechanism and the impeller assembly (2) are arranged in a coaxial structure, and the cutting blades and the mincing blades cooperate with each other through a transmission structure of a transmission shaft (6) and a coupling (7) to achieve synchronous rotational movement with the impeller assembly (2).

3. A high-efficiency cutting type sewage pump according to claim 1, characterized in that: The number of the plurality of cutting blades (8) is four and they are arranged in a cross-shaped structure, and the cutting blades (8) are arranged in an axially downwardly bent structure.

4. A high-efficiency cutting type sewage pump according to claim 1, characterized in that: The cutting mechanism adopts a detachable split structure and is arranged at the water inlet of the pump body (1), which is convenient for later disassembly, cleaning and maintenance.

5. A high-efficiency cutting type sewage pump according to claim 1, characterized in that: The mincing blade (5) and the cutting blade (4) are made of hard alloy steel.

6. A high-efficiency cutting type sewage pump according to claim 1, characterized in that: A plurality of opening grooves (11) are provided on the side wall of the connecting cylinder (10) to facilitate the rapid entry of a medium, and the plurality of opening grooves (11) are arranged at intervals in a circumferential direction along the central axis of the connecting cylinder (10).

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