Cutting assembly for submersible pump

Abstract

The utility model provides a cutting assembly for a submersible pump, and belongs to the technical field of submersible pumps. The problems that the types of garbage cut by a submersible pump are few, and an impeller is prone to being blocked are solved. The cutting assembly for the submersible pump comprises an impeller, a fixed cutting device and a rotary cutting device, the impeller is provided with a water inlet and a water outlet, the rotary cutting device is arranged at the water inlet, the fixed cutting device is arranged on the side, away from the water inlet, of the rotary cutting device, and the rotary cutting device and the fixed cutting device are matched to be used for cutting garbage. And at least one of the rotary cutting device and the fixed cutting device is provided with a limiting device, and the limiting device is used for limiting the garbage. The garbage cutting device has the advantages of cutting most of garbage, limiting the garbage, preventing the garbage from being separated from a cutting area and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of submersible pumps, and in particular relates to a cutting assembly for a submersible pump. Background Art

[0002] In our daily life, there are wastewater tanks full of garbage, such as diapers, chopsticks, plastic bags and other garbage. Sometimes they need to be cleaned and disinfected, and the items and water in the wastewater tank need to be pumped out. The existing submersible pump with a cutter uses a fixed blade to cut the garbage, and the garbage is cut by cutting at the water inlet. However, the existing cutting method has the problem that the garbage will leave the cutting area of the blade during the rotation or cutting process, making it impossible for the blade to cut the garbage, causing the garbage to be blocked in the impeller, affecting the efficiency of the submersible pump, and even blocking it. Summary of the Invention

[0003] The purpose of the utility model is to provide a cutting assembly for a submersible pump in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: A cutting assembly for a submersible pump, characterized in that it includes an impeller, a fixed cutting device and a rotating cutting device, the impeller is provided with a water inlet and a water outlet, the rotating cutting device is arranged at the water inlet, the fixed cutting device is arranged on the side of the rotating cutting device away from the water inlet, the rotating cutting device and the fixed cutting device are used to cut garbage in cooperation, and at least one of the rotating cutting device and the fixed cutting device is provided with a limiting device, and the limiting device is used to limit the garbage.

[0005] The working principle of the utility model is as follows: the impeller is directly mounted on the output shaft of the output motor, and the motor drives the impeller to rotate, which drives the rotary cutting device to rotate. The rotation of the impeller drives the liquid to enter the impeller from the water inlet and leave the impeller from the water outlet. When the garbage passes through the water inlet, the rotary cutting device and the fixed cutting device cooperate with each other to cut the garbage into small pieces to prevent the garbage from clogging the impeller. By setting a limiting device in one of the rotary cutting device and the fixed cutting device or setting a limiting device in both the rotary cutting device and the fixed cutting device, the garbage is limited to prevent the garbage from leaving the cutting area of the optional cutting device and the fixed cutting device due to rotation when entering the impeller, thereby causing the garbage to clog the impeller.

[0006] In the above-mentioned cutting assembly for a submersible pump, a first mounting groove is provided on the impeller near the water inlet, and the rotary cutting device is fixedly connected in the first mounting groove by a screw member. The rotary cutting device includes a first supporting chassis, at least one first cutting blade and at least one first peripheral cutting blade. The first supporting chassis is provided with a rotary cutting hole, and the first cutting blade and the first peripheral cutting blade are arranged on the side wall of the rotary cutting hole.

[0007] In the above-mentioned cutting assembly for a submersible pump, the limiting device includes two protrusions, and the two protrusions are arranged on both sides of the first cutting blade head.

[0008] In the above-mentioned cutting assembly for a submersible pump, the fixed cutting device is connected to a suction cover, the suction cover is provided with a second mounting groove, the fixed cutting device is fixedly connected in the second mounting groove by a screw member, the fixed cutting device includes a second supporting chassis, at least one second cutting blade and at least one second peripheral cutting blade, the second supporting chassis is provided with a fixed cutting hole, the second cutting blade and the second peripheral cutting blade are both arranged on the side wall of the fixed cutting hole.

[0009] In the above-mentioned cutting assembly for a submersible pump, the limiting device includes two protrusions, and the two protrusions are arranged on both sides of the head of the second cutting blade.

[0010] In the above-mentioned cutting assembly for a submersible pump, the suction cover is provided with a limiting groove for inserting the impeller.

[0011] In the above-mentioned cutting assembly for a submersible pump, the top surface and the bottom surface of the impeller are both provided with weight-reducing grooves and counterweight blocks.

[0012] In the above-mentioned cutting assembly for a submersible pump, a weight-reducing chamber is provided inside the impeller.

[0013] Compared with the prior art, the utility model has the advantages of being able to cut most of the garbage and to limit the position of the garbage to prevent the garbage from escaping from the cutting area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of the water inlet of the utility model.

[0016] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the explosion structure of the utility model Figure 1.

[0018] Figure 5 This is a schematic diagram of the explosion structure of the utility model Figure 2 .

[0019] Figure 6 This is a schematic diagram of the structure of the utility model when it is working Figure 1 .

[0020] Figure 7 This is a schematic diagram of the structure of the utility model when it is working Figure 2 .

[0021] Figure 8 It is a schematic diagram of the horizontal cross-sectional structure of the utility model.

[0022] In the figure, 1. impeller; 2. fixed cutting device; 3. rotary cutting device; 4. water inlet; 5. water outlet; 6. limiting device; 7. first mounting groove; 8. first supporting chassis; 9. first cutting blade; 10. first peripheral cutting blade; 11. rotary cutting hole; 12. protrusion; 13. suction cover; 14. second mounting groove; 15. second supporting chassis; 16. second cutting blade; 17. second peripheral cutting blade; 18. fixed cutting hole; 19. limiting groove; 20. weight-reducing groove; 21. counterweight block; 22. weight-reducing cavity. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figures 1-8 As shown, the cutting assembly for the submersible pump includes an impeller 1, a fixed cutting device 2 and a rotating cutting device 3. The impeller 1 is provided with a water inlet 4 and a water outlet 5. The rotating cutting device 3 is arranged at the water inlet 4, and the fixed cutting device 2 is arranged on the side of the rotating cutting device 3 away from the water inlet 4. The rotating cutting device 3 and the fixed cutting device 2 are used to cut garbage together. At least one of the rotating cutting device 3 and the fixed cutting device 2 is provided with a limiting device 6, which is used to limit the garbage.

[0025] To elaborate further, the impeller 1 is provided with a first mounting groove 7 near the water inlet 4, and the rotary cutting device 3 is fixedly connected to the first mounting groove 7 by a screw member. The rotary cutting device 3 includes a first supporting chassis 8, at least one first cutting blade 9 and at least one first peripheral cutting blade 10. The first supporting chassis 8 is provided with a rotary cutting hole 11. The first cutting blade 9 and the first peripheral cutting blade 10 are arranged on the side wall of the rotary cutting hole 11. The first cutting blade 9 and the first peripheral cutting blade 10 are integrally arranged with the first supporting chassis 8. The first peripheral cutting blade 10 is used to cooperate with the fixed cutting device 2 through centrifugal force to cut the garbage around the rotary cutting hole 11. The first cutting blade 9 is used to cooperate with the fixed cutting device 2 to cut the garbage like scissors.

[0026] To be more specific, the limiting device 6 includes two protrusions 12, which are arranged on both sides of the head of the first cutting blade 9. The protrusions 12 are used to capture the garbage on the first cutting blade 9 when the first supporting chassis 8 rotates, and move it to the end of the first cutting blade 9, while facilitating the first peripheral cutting blade 10 to cut, and at the same time ensure that when the first cutting blade 9 overlaps with the fixed cutting device 2, the garbage can be smoothly sheared to prevent the garbage from sliding along the edge of the first cutting blade 9 toward the center and out of the cutting area.

[0027] To be more specific, the fixed cutting device 2 is connected to the suction cover 13, the suction cover 13 is provided with a second mounting groove 14, the fixed cutting device 2 is fixedly connected to the second mounting groove 14 by a screw member, the fixed cutting device 2 includes a second supporting chassis 15, at least one second cutting blade 16 and at least one second peripheral cutting blade 17, the second supporting chassis 15 is provided with a fixed cutting hole 18, the second cutting blade 16 and the second peripheral cutting blade 17 are both provided on the side wall of the fixed cutting hole 18, the fixed cutting device 2 has the same structure as the rotary cutting device 3, and both have The difference is that the first supporting chassis 8 of the rotary cutting device 3 is fixedly connected to the impeller 1 and rotates as the impeller 1 rotates. The second supporting chassis 15 of the fixed cutting device 2 is fixed on the suction cover 13. The suction cover 13 is fixed to the motor through the outer casing of the impeller 1 and remains stationary during use. The cutting force is generated when the first cutting blade 9 rotates and overlaps with the second cutting blade 16, and the cutting force is generated when the first peripheral cutting blade 10 rotates and overlaps with the second peripheral cutting blade 17. It can cut most of the garbage in life, such as disposable chopsticks, diapers, ropes, etc.

[0028] To be more specific, the limiting device 6 includes two protrusions 12, which are arranged on both sides of the head of the second cutting blade 16. This setting is similar to the protrusions 12 of the mobile cutting device, and is used to prevent garbage from leaving the cutting area. At the same time, it captures garbage and moves it to the end of the second cutting blade 16 to facilitate subsequent cutting of the garbage.

[0029] To be more specific, the suction cover 13 is provided with a limiting groove 19 for inserting the impeller 1. This setting is used to ensure that the distance between the rotating cutting device 3 and the fixed cutting device 2 is fixed and stable, thereby ensuring the overall cutting effect. The suction cover 13 is provided with a through hole for allowing liquid and garbage to pass through.

[0030] To elaborate further, the top and bottom surfaces of the impeller 1 are both provided with weight-reducing grooves 20 and counterweight blocks 21. Since the impeller 1 in this application is a single-blade, it is necessary to provide weight-reducing grooves 20 and counterweight blocks 21 to balance the weight of the blades, that is, the weight-reducing grooves 20 are provided at the blades, and the counterweight blocks 21 are provided away from the blades to ensure that the impeller 1 rotates stably.

[0031] In further detail, a weight-reducing cavity 22 is provided inside the impeller 1 to reduce the weight of the blades and reduce production costs.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0033] Although a large number of terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A cutting assembly for a submersible pump, characterized in that: The invention comprises an impeller (1), a fixed cutting device (2) and a rotary cutting device (3); the impeller (1) is provided with a water inlet (4) and a water outlet (5); the rotary cutting device (3) is provided at the water inlet (4); the fixed cutting device (2) is provided on a side of the rotary cutting device (3) away from the water inlet (4); the rotary cutting device (3) cooperates with the fixed cutting device (2) to cut garbage; at least one of the rotary cutting device (3) and the fixed cutting device (2) is provided with a limiting device (6); the limiting device (6) is used to limit the position of the garbage.

2. A cutting assembly for a submersible pump according to claim 1, characterized in that: The impeller (1) is provided with a first mounting groove (7) near the water inlet (4); the rotary cutting device (3) is fixedly connected in the first mounting groove (7) via a screw member; the rotary cutting device (3) comprises a first supporting chassis (8), at least one first cutting blade (9) and at least one first peripheral cutting blade (10); the first supporting chassis (8) is provided with a rotary cutting hole (11); the first cutting blade (9) and the first peripheral cutting blade (10) are arranged on the side wall of the rotary cutting hole (11).

3. A cutting assembly for a submersible pump according to claim 2, characterized in that: The limiting device (6) comprises two protrusions (12), and the two protrusions (12) are arranged on both sides of the head of the first cutting blade (9).

4. A cutting assembly for a submersible pump according to claim 1, characterized in that: The fixed cutting device (2) is connected to a suction cover (13), and the suction cover (13) is provided with a second mounting groove (14). The fixed cutting device (2) is fixedly connected to the second mounting groove (14) through a screw member. The fixed cutting device (2) comprises a second supporting chassis (15), at least one second cutting blade (16) and at least one second peripheral cutting blade (17). The second supporting chassis (15) is provided with a fixed cutting hole (18), and the second cutting blade (16) and the second peripheral cutting blade (17) are both arranged on the side wall of the fixed cutting hole (18).

5. A cutting assembly for a submersible pump according to claim 4, characterized in that: The limiting device (6) comprises two protrusions (12), and the two protrusions (12) are arranged on both sides of the head of the second cutting blade (16).

6. A cutting assembly for a submersible pump according to claim 4, characterized in that: The suction cover (13) is provided with a limiting groove (19) for inserting the impeller (1).

7. A cutting assembly for a submersible pump according to claim 1, characterized in that: The top surface and bottom surface of the impeller (1) are both provided with a weight reduction groove (20) and a counterweight block (21).

8. The cutting assembly for a submersible pump according to claim 1, characterized in that: A weight reduction chamber (22) is provided inside the impeller (1).

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