Water inlet structure of sewage submersible pump

Abstract

The invention discloses a sewage submersible pump water inlet structure which is characterized in that a motor output end of a pump body penetrates through a flange seat, extends into the pump body and is fixedly connected with an impeller, a rotating rod is fixedly connected to the middle of the bottom end of the impeller through a bolt, a rotating cutter is connected to the bottom end of the rotating rod, and a cutter plate is fixedly connected to the position, above the rotating cutter, in the pump body through a screw; the inlet structure of the submersible pump has the following advantages that when the submersible pump with the inlet structure is in operation, the motor knife edge can continuously cut off and crush sundries wound on the outer side of the rotating rod through the first arc-shaped cutter and the second arc-shaped cutter, so that the sundries can be cut off and crushed, and the service life of the submersible pump is prolonged; the situation that the load of the pump is increased due to the fact that sundries are wound by a traditional pump shaft is effectively avoided, if the sundries are attached to the bottom of the cutter plate, the sundries are smashed through the rotating rotary cutter, progressive effective treatment of multiple shearing and smashing of the sundries is achieved, and the rotary cutter and the cutter edge are compact in structure and very practical.

Description

Technical Field

[0001] This invention relates to the field of sewage submersible pump technology, and specifically to a sewage submersible pump inlet structure. Background Technology

[0002] Submersible pumps for wastewater treatment are commonly used equipment. Because they treat wastewater, which contains 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 inlet structure with multiple cutting functions to address these issues. Summary of the Invention

[0003] To solve the problems mentioned above, the technical solution adopted by the present invention is: a sewage submersible pump inlet structure, which includes a motor output end of the pump body extending through a flange seat to the inside of the pump body and fixedly connected to an impeller, characterized in that a rotating rod is fixedly connected to the middle of the bottom end of the impeller by bolts, a rotating cutter is connected to the bottom end of the rotating rod, a cutter plate is fixedly connected to the inside of the pump body above the rotating cutter by screws, a blade edge 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 rotating rod outside the blade edge.

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

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

[0006] As a preferred embodiment of the present invention, the cutting blade has a water-passing cut, and the number of water-passing cuts is set to a plurality, wherein the water-passing cut is an arc-shaped structure.

[0007] As a preferred embodiment of the present invention, 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 the present invention, the blade is matched with the first arc-shaped cutter and the second arc-shaped cutter, and the pump body has water inlets uniformly opened on the outer circumference of the lower end.

[0009] As a preferred embodiment of the present invention, 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 the present invention, the top of the pump body is fixedly connected to a flange seat by bolts, the top of the flange seat is fixedly connected to a motor by bolts, the output end of the motor is located inside the flange seat and connected to a bearing, the top of the motor is connected to a top cover by a flange, and the top of the top cover is provided with a handle.

[0011] As a preferred embodiment of the present invention, 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 the present invention, the impeller is a semi-open type, and the pump body is connected to the outlet and the inlet.

[0013] The above structure is also a type of sewage submersible pump structure.

[0014] This invention has the following advantages: In use, the submersible pump 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 pulverize the debris wrapped around the outside of the rotating rod, preventing the pump shaft from being entangled by debris, thus avoiding increased pump load and potential pump damage. Simultaneously, the pumped water continuously flows towards the impeller through the water inlet. If debris adheres to the bottom of the cutter plate, it is pulverized by the rotating cutter, preventing debris from clogging the water inlet. This achieves a progressive and effective treatment of debris through multiple shearing and pulverization processes. Furthermore, the cutter plate effectively prevents debris from directly contacting the impeller. The small size and compact structure of the rotating cutter and blades further reduce the load on the submersible pump. This multi-effect inlet structure is highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a preferred embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the cutting plate and rotating cutting blade structure of a preferred embodiment of the present invention;

[0018] 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 according to a preferred embodiment of the present invention.

[0019] 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

[0020] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and 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 the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Please refer to the following: Figures 1-3 The present invention discloses a sewage submersible pump inlet structure, 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, and a rotating rod 5 fixedly connected to the bottom center of the impeller 4 by bolts, a rotating cutter 13 connected to the bottom 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.

[0024] 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.

[0025] 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.

[0026] Specifically, when this invention is used, the motor 3 synchronously drives the impeller 4, the rotating rod 5, the blade 6, and the 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 continuously passes 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, cuts and crushes them. The pumped water continuously flows to the impeller 4 through the water passage 12. If debris is attached to the bottom of the cutter plate 11, it is crushed by the rotating cutter 13, preventing debris from clogging the water passage 12.

[0027] 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.

[0028] The above structure is also a type of submersible sewage pump. The original structures and principles of other water pumps will not be detailed here.

[0029] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0030] Other parts of this invention that are not detailed herein are all prior art and will not be described further here.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. A sewage submersible pump inlet structure, comprising a motor (3) output end of a pump body (1) extending through a flange seat (2) into the pump body (1) and fixedly connected to an impeller (4), characterized in that, The impeller (4) is fixedly connected to the middle of the bottom end by a rotating rod (5) by bolts. The bottom end of the rotating rod (5) is connected to a rotating cutter (13). Inside the pump body (1), above the rotating cutter (13), a cutter plate (11) is fixedly connected by screws. The rotating rod (5) has a blade (6) arranged longitudinally on the outer side of its circumference. The rotating rod (5) is provided with a first arc-shaped cutter (8) and a second arc-shaped cutter (10) on the outer side of the blade (6).

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

3. The sewage submersible pump inlet structure 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, The top of the pump body (1) is fixedly connected to the flange seat (2) by bolts, the top of the flange seat (2) is fixedly connected to the motor (3) by bolts, the bottom of the pump body (1) is fixedly connected to the base (15), and the pump body (1) is provided with an outlet (16) at one end of the impeller (4).

8. The sewage submersible pump inlet structure as described in claim 7, 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, 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. The sewage submersible pump inlet structure as described in claim 1, characterized in that, 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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