A sewage submersible pump

Abstract

This utility model discloses a submersible sewage pump, including a pump body. A flange seat is bolted to the top of the pump body, and a motor is bolted to the top of the flange seat. An impeller is bolted to the output end of the motor through the flange seat and into the pump body. A rotating rod is bolted to the middle of the bottom end of the impeller, and a rotating cutter is connected to the bottom end of the rotating rod. A cutter plate is bolted to the inside of the pump body above the rotating cutter. A blade is longitudinally arranged on the outer circumference of the rotating rod, and a first arc-shaped cutter and a second arc-shaped cutter are respectively arranged on the outside of the blade. This utility model has a submersible pump with this multi-cutting structure. During operation, the motor blade continuously passes through the first and second arc-shaped cutters. The blade on the rotating rod, together with the first and second arc-shaped cutters, cuts and crushes the debris wrapped around the outside of the rotating rod. This effectively avoids the increase in pump load caused by debris entanglement on the traditional pump shaft. Moreover, the rotating cutter and blade structure are compact and very practical.

Description

Technical Field

[0001] This utility model relates to the field of submersible pump technology, specifically to a sewage submersible pump. Background Technology

[0002] Submersible pumps for wastewater treatment are commonly used equipment. Because wastewater involves a lot of impurities, pumps typically have a filter screen at the inlet to remove these impurities. However, if the pump's suction is high, the filtered impurities can easily clog the screen, affecting the pump's efficiency. While some submersible pumps on the market have cutter structures at the inlet to remove impurities, over time, these impurities can still become entangled on the cutter's shaft, increasing the pump's load and potentially causing damage, thus impacting overall performance. Therefore, this paper proposes a submersible pump with an inlet structure featuring multiple cutting functions to solve these problems. Utility Model Content

[0003] To solve the problems mentioned above, the technical solution adopted by this utility model is: a submersible sewage pump, comprising: a pump body, a flange seat fixedly connected to the top of the pump body by bolts, a motor fixedly connected to the top of the flange seat by bolts, an impeller fixedly connected to the output end of the motor extending through the flange seat into the pump body, a rotating rod fixedly connected to the bottom center of the impeller by bolts, a rotating cutter connected to the bottom end of the rotating rod, a cutter plate fixedly connected to the inside of the pump body above the rotating cutter by screws, a blade edge longitudinally arranged on the outer circumference of the rotating rod, and a first arc-shaped cutter and a second arc-shaped cutter respectively arranged on the outer side of the blade edge of the rotating rod.

[0004] In a preferred embodiment of this invention, the rotary cutter has a curved structure, and the rotary cutter slides against the surface of the cutter plate, which has a circular structure.

[0005] As a preferred embodiment of this utility model, the bottom end of the rotating rod movably passes through the middle of the cutting plate and connects to the rotating cutter, with the cutting edge located above the cutting plate.

[0006] As a preferred embodiment of this utility model, the cutting plate has water-passing slits, and the number of water-passing slits is set to several, and the water-passing slits have an arc-shaped structure.

[0007] As a preferred embodiment of this utility model, a first fixing rod is fixedly connected to the outer side of the first arc-shaped cutter, and a second fixing rod is fixedly connected to the outer side of the second arc-shaped cutter. Both the first fixing rod and the second fixing rod are fixedly connected to the inner side of the pump body.

[0008] As a preferred embodiment of this utility model, the blade is matched with the first arc-shaped cutter and the second arc-shaped cutter, and the pump body has water inlets evenly distributed on the outer circumference of the lower end.

[0009] As a preferred embodiment of this utility model, the bottom end of the pump body is fixedly connected to a base, and the pump body is provided with a water outlet at one end of the impeller.

[0010] As a preferred embodiment of this utility model, the motor output end is connected to a bearing inside the flange seat, the top of the motor is connected to a top cover via a flange, and a handle is provided on the top of the top cover.

[0011] As a preferred embodiment of this utility model, the blade is made of curved stainless steel, and both the rotating cutter and the cutter plate are made of stainless steel.

[0012] As a preferred embodiment of this utility model, the impeller is a semi-open type, and the pump body is connected to the outlet and the inlet.

[0013] This utility model has the following advantages: This submersible pump has an inlet with a multi-cutting function structure. When the submersible pump is running, the motor blades continuously pass through the first and second arc-shaped cutters. The blades on the rotating rod, in conjunction with the first and second arc-shaped cutters, cut and crush weeds and other debris wrapped around the outside of the rotating rod. This effectively avoids the situation where debris wraps around the pump shaft, increasing the pump load and even causing pump damage, which is common in traditional pumps. At the same time, the pumped water continuously flows to the impeller through the water inlet. If debris is attached to the bottom of the cutter plate, it is crushed by the rotating cutter, preventing debris from clogging the water inlet. This achieves a progressive and effective treatment of multiple shearing and crushing of debris. The cutter plate can effectively prevent debris from directly contacting the impeller. Furthermore, the rotating cutter and blades are small in size and have a compact structure, further reducing the load on the submersible pump. This multi-effect inlet structure is very practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0015] Figure 2 This is a cross-sectional structural schematic diagram of a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the cutting plate and rotating cutting blade structure of a preferred embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram showing the positional relationship between the blade edge, the first arc-shaped cutter, and the second arc-shaped cutter in a preferred embodiment of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Pump body; 2. Flange seat; 3. Motor; 4. Impeller; 5. Rotating rod; 6. Blade; 7. First fixing rod; 8. First arc-shaped cutter; 9. Second fixing rod; 10. Second arc-shaped cutter; 11. Cutting plate; 12. Water inlet; 13. Rotating cutter; 14. Water inlet; 15. Base; 16. Water outlet; 17. Bearing; 18. Top cover; 19. Handle. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Please refer to the following: Figures 1-3 This utility model discloses a submersible sewage pump, comprising: a pump body 1, a flange seat 2 fixedly connected to the top of the pump body 1 by bolts, a motor 3 fixedly connected to the top of the flange seat 2 by bolts, an impeller 4 fixedly connected to the output end of the motor 3 through the flange seat 2 and into the pump body 1, a rotating rod 5 fixedly connected to the bottom center of the impeller 4 by bolts, a rotating cutter 13 connected to the bottom end of the rotating rod 5, a cutter plate 11 fixedly connected to the inside of the pump body 1 above the rotating cutter 13 by screws, a blade edge 6 longitudinally arranged on the outer circumference of the rotating rod 5, and a first arc-shaped cutter 8 and a second arc-shaped cutter 10 respectively arranged on the rotating rod 5 outside the blade edge 6.

[0023] The rotary cutter 13 has a curved structure and slides against the surface of the cutter plate 11. The cutter plate 11 has a circular structure. The bottom end of the rotating rod 5 moves through the middle of the cutter plate 11 and connects to the rotary cutter 13. The blade 6 is located above the cutter plate 11. The cutter plate 11 has water-passing cuts 12. There are several water-passing cuts 12. The water-passing cuts 12 have an arc structure.

[0024] The first arc-shaped cutter 8 is fixedly connected to a first fixing rod 7 on its outer side, and the second arc-shaped cutter 10 is fixedly connected to a second fixing rod 9 on its outer side. Both the first fixing rod 7 and the second fixing rod 9 are fixedly connected to the inner side of the pump body 1. The blade 6 matches the first arc-shaped cutter 8 and the second arc-shaped cutter 10, thus facilitating the cutting of debris wrapped around the outer circumference of the rotating rod 5, ensuring the normal operation of the water pump. Water inlets 14 are evenly distributed on the outer circumference of the lower end of the pump body 1. A base 15 is fixedly connected to the bottom end of the pump body 1. The pump body 1 is located on the impeller 4... The pump body 1 has an outlet 16 at one end. The output end of the motor 3 is located inside the flange seat 2 and connected to a bearing 17. The top of the motor 3 is connected to a top cover 18 via a flange. The top of the top cover 18 has a handle 19. The blade 6 is made of curved stainless steel. The rotating cutter 13 and the cutter plate 11 are both made of stainless steel. The cutter plate 11 can prevent impurities in the water from directly contacting the impeller 4 inside the pump body 1 during pumping, thus preventing damage to the impeller 4 and the motor 3. The impeller 4 is a semi-open type. The pump body 1 is connected to the outlet 16 and the inlet 14.

[0025] Specifically, when this utility model is in use, the running motor 3 synchronously drives the impeller 4, rotating rod 5, blade 6, and rotating cutter 13 to rotate. Water can be pumped to the outlet 16 for outward delivery through the impeller 4. At the same time, the rotating rod 5 rotates along with the rotating cutter 13. The blade 6 will continuously pass through the first arc-shaped cutter 8 and the second arc-shaped cutter 10. If weeds or other debris are entangled on the outside of the rotating rod 5, the blade 6 on the rotating rod 5, together with the first arc-shaped cutter 8 and the second arc-shaped cutter 10, will cut and crush them. The pumped water will continuously flow to the impeller 4 through the water passage 12. If there is debris attached to the bottom of the cutter plate 11, it will be crushed by the rotating cutter 13 to prevent debris from clogging the water passage 12.

[0026] The outer side of the rotating rod is equipped with a curved stainless steel blade, which, together with the first and second curved cutters positioned by a fixed rod, forms a multi-layer cutting structure with dynamic blades and static curved cutters. When the motor drives the rotating rod to rotate, the blade and the double curved cutters create a cross-cutting force, effectively shearing and shredding long strips of debris (such as plastic bags and cloth strips). The water-passing cut of the cutter plate is designed with a curved structure that matches the curved shape of the rotating cutter. When the rotating cutter rotates in contact with the cutter plate, the curved water-passing cut can guide the water flow in a directional direction. At the same time, the water flow assists in cutting debris, causing the debris to rub against the edge of the cut, enhancing the shredding effect. This achieves a progressive and effective treatment of multiple shearing and shredding of debris, avoiding the pump shaft from being entangled by debris, increasing the pump load, or even damaging the pump. Furthermore, the rotating cutter and blades are small in size and have a compact structure, further reducing the load on the submersible pump. This multi-effect inlet structure is highly practical.

[0027] The original structure and working principle of other water pumps will not be detailed here.

[0028] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0029] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sewage submersible pump characterized by, include: A pump body (1) is provided. A flange seat (2) is fixedly connected to the top of the pump body (1) by bolts. A motor (3) is fixedly connected to the top of the flange seat (2) by bolts. An impeller (4) is fixedly connected to the output end of the motor (3) through the flange seat (2) and into the pump body (1). A rotating rod (5) is fixedly connected to the middle of the bottom end of the impeller (4) by bolts. A rotating cutter (13) is connected to the bottom end of the rotating rod (5). A cutter plate (11) is fixedly connected to the pump body (1) above the rotating cutter (13) by screws. A blade (6) is longitudinally arranged on the outer circumference of the rotating rod (5). A first arc-shaped cutter (8) and a second arc-shaped cutter (10) are respectively arranged on the rotating rod (5) outside the blade (6).

2. A sewage submersible pump as claimed in claim 1, wherein, The rotary cutter (13) has a curved structure and slides against the surface of the cutter plate (11), which has a circular structure.

3. A submersible sewage pump as described in claim 1, characterized in that, The bottom end of the rotating rod (5) is movably connected to the middle of the cutting plate (11) and the rotating cutter (13), and the cutting edge (6) is located above the cutting plate (11).

4. A sewage submersible pump as claimed in claim 1, wherein, The cutting blade (11) has water-passing cuts (12), and the number of water-passing cuts (12) is set to a certain extent. The water-passing cuts (12) are arc-shaped.

5. A sewage submersible pump as claimed in claim 1, wherein, The first arc-shaped cutter (8) is fixedly connected to a first fixing rod (7) on the outside, and the second arc-shaped cutter (10) is fixedly connected to a second fixing rod (9) on the outside. Both the first fixing rod (7) and the second fixing rod (9) are fixedly connected to the inside of the pump body (1).

6. A sewage submersible pump as claimed in claim 1, wherein, The blade (6) matches the first arc-shaped cutter (8) and the second arc-shaped cutter (10), and the pump body (1) has a water inlet (14) evenly opened on the outer side of the lower circumference.

7. A sewage submersible pump as claimed in claim 1, wherein, The pump body (1) is fixedly connected to a base (15) at its bottom end, and the pump body (1) is provided with an outlet (16) at one end of the impeller (4).

8. A submersible sewage pump as described in claim 1, characterized in that, The output end of the motor (3) is located inside the flange seat (2) and connected to a bearing (17). The top of the motor (3) is connected to a top cover (18) through a flange, and a handle (19) is provided on the top of the top cover (18).

9. A sewage submersible pump as claimed in claim 1, wherein, The blade (6) is made of curved stainless steel, and both the rotary cutter (13) and the cutter plate (11) are made of stainless steel.

10. A sewage submersible pump as claimed in claim 1, wherein, The impeller (4) is a semi-open type, and the pump body (1) is connected to the outlet (16) and the inlet (14).

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