Sewage pump with anti-winding structure
By introducing anti-winding blades, filters, and spiral vanes into the sewage pump, the problem of entanglement in the sewage pump is solved, achieving a highly efficient anti-winding effect, reducing energy consumption and costs, and improving operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional sewage pumps are prone to impeller components becoming entangled with impurities during operation, leading to increased energy consumption, reduced operating efficiency, and increased costs. Existing technologies are unable to effectively prevent the entanglement of fine fibrous materials.
A sewage pump with an anti-winding structure was designed, including anti-winding blades, a filter screen, and a spiral blade. The rotating motion cuts and separates fibrous materials to prevent them from entering the pump body, and the scraper ensures smooth discharge of sewage.
It effectively prevents fibrous materials from entangled, reduces energy consumption, lowers operating costs, and improves pump operating efficiency and reliability.
Smart Images

Figure CN224032779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage pump technology, and specifically to a sewage pump with an anti-winding structure. Background Technology
[0002] With the rapid development of modern industry and urbanization, wastewater discharge and treatment have become crucial aspects of environmental protection and infrastructure construction. Wastewater pumps, as mechanical devices used to transport wastewater, are widely used in urban wastewater treatment plants, building drainage systems, industrial wastewater treatment, and many other fields.
[0003] In the actual use of sewage pumps, various impurities and fibrous materials, such as hair, rags, and plastic films, are frequently encountered. During operation, these impurities easily become entangled on the impeller components within the pump body. Once this entanglement occurs, it can cause several serious problems. First, the entanglement increases the impeller's rotational resistance, significantly increasing the pump's energy consumption, reducing its operating efficiency, and increasing operating costs.
[0004] To address the issue of entanglement in sewage pumps during operation, several related technologies have emerged in the market. Some sewage pumps employ a simple screen at the pump inlet, which, while blocking larger impurities from entering the pump body, remains ineffective in preventing fine fibrous materials and impurities that can pass through the screen from becoming entangled on the pump's components. Therefore, it is necessary to design a sewage pump with a simple, cost-effective, and easy-to-install anti-entanglement structure to meet the increasing demands of sewage discharge and treatment, and reduce the various adverse effects and losses caused by entanglement problems. Utility Model Content
[0005] The purpose of this invention is to provide a sewage pump with an anti-winding structure to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a sewage pump with an anti-winding structure, comprising a drive motor, a pump body, a water outlet, and a water inlet channel, characterized in that: the output end of the drive motor is connected to the pump body, the pump body has an water outlet on its upper part, and a water inlet channel is connected through the center of one side surface of the pump body, an anti-winding structure is provided inside the water inlet channel, one end of the anti-winding structure is fixedly connected to a drive shaft, and the drive shaft passes through the water inlet channel and the pump body and is connected to the output end of the drive motor;
[0007] The anti-winding structure includes a water inlet chamber, an anti-winding blade, a filter screen, a flow divider, and a first spiral blade. The water inlet chamber is located inside the water inlet channel, and an anti-winding blade is provided on the outside of one end of the water inlet chamber, while the filter screen is fixedly connected to the other end. Multiple flow dividers are provided on the outside of the filter screen, and a drive shaft is fixedly connected to one end of the filter screen. The first spiral blade is fixedly connected to the drive shaft inside the water inlet channel.
[0008] Preferably, the end of the water inlet chamber is a conical structure, and a spiral plate is provided on the outside to control the flow direction of sewage.
[0009] Preferably, the anti-tangle blade is composed of multiple sharp blades to prevent easily entangled objects such as plastic bags from entering the pump body during sewage extraction.
[0010] Preferably, the filter screen is surrounded by a ring of multiple flow dividers of different sizes, and each flow divider is tilted in one direction.
[0011] Preferably, the first spiral blade is composed of spiral blades of varying lengths and rotates with the drive shaft. The first spiral blade is located on one side of the connection between the water inlet channel and the pump body to prevent unseparated particles or plastic bags in the sewage from entering the pump body and causing entanglement or blockage.
[0012] Preferably, a wiper blade is provided on the drive shaft inside the pump body, and the surface of the wiper blade is provided with a ring of water passage holes, and the wiper blade rotates with the drive shaft.
[0013] The beneficial effects of this utility model are:
[0014] This invention uses an anti-winding structure to prevent fibrous materials from entering the pump body and becoming entangled. First, the anti-winding blade is driven by a drive shaft to rotate the filter screen, which in turn drives the inlet chamber and the anti-winding blade to rotate. When fibrous materials flow into the inlet channel with sewage, they are first cut into flocculent pieces by the high-speed rotating sharp anti-winding blade. The end of the inlet chamber has a conical structure that protrudes from the anti-winding blade to prevent large materials from colliding with the anti-collision blade. Then, the filter screen isolates the larger flocculent pieces. Finally, the first spiral blade acts as the final anti-winding device, decomposing the cut fibrous materials to prevent blockage and reducing various adverse effects and losses caused by entanglement problems in the sewage pump. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall half-section structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the three-dimensional anti-winding structure of this utility model;
[0017] Figure 3This is a schematic diagram of the semi-sectional water scraper structure of this utility model.
[0018] The components in the attached diagram are labeled as follows: 1: drive motor, 2: pump body, 3: outlet, 4: water inlet channel, 51: water inlet chamber, 511: spiral plate, 52: anti-winding blade, 53: filter screen, 54: flow divider plate, 55: first spiral blade, 6: drive shaft, 7: scraper blade, 71: water passage hole. Detailed Implementation
[0019] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.
[0020] The present invention relates to a sewage pump with an anti-winding structure as shown in the figure: First, the drive motor 1 is installed at a suitable position on one side of the pump body 2, ensuring that the drive shaft 6 of the drive motor 1 is firmly connected to the scraper inside the pump body 2. Then, the water inlet channel 4 with the anti-winding structure is connected to the other side of the pump body 2. When the water inlet channel 4 is connected to the pump body 2, the sealing should be ensured to prevent sewage leakage. An outlet 3 is provided on the top of the pump body 2 for discharging the pumped sewage through the outlet 3. The drive shaft 6 is fixedly connected to one end of the anti-winding structure so that the anti-winding structure rotates with the drive shaft 6.
[0021] The anti-winding structure includes an inlet chamber 51, anti-winding blades 52, a filter screen 53, a flow divider 54, and a first spiral blade 55. The inlet chamber 51 is located inside the inlet channel 4. The end of the inlet chamber 51 is conical, and one end of the inlet chamber 51 is surrounded by an anti-winding blade 52. The anti-winding blade 52 consists of multiple sharp blades to prevent easily entangled fibrous materials from entering the pump body 2 during wastewater pumping. The conical end of the inlet chamber 51 protrudes beyond the anti-winding blade 52 to prevent large objects from colliding with the anti-collision blade. The other end of the inlet chamber 51 is further surrounded by... A spiral plate 511 is used to control the flow direction of sewage. A filter screen 53 is fixedly connected to the end face. Multiple diversion plates 54 of different sizes are set on the outside of the filter screen 53. Each diversion plate 54 is inclined in one direction to facilitate the flow of sewage and prevent clogging. A drive shaft 6 is fixedly connected to one end of the filter screen 53. A first spiral blade 55 is fixedly connected to the drive shaft 6 in the water inlet channel 4. The first spiral blade 55 is composed of spiral blades of various sizes and rotates with the drive shaft 6 to prevent unseparated particles or plastic bags in the sewage from entering the pump body 2 and becoming entangled or blocked.
[0022] A scraper 7 is installed on the drive shaft 6 inside the pump body 2. The scraper 7 has a long plate semi-arc structure and the arc shape fits the inner wall of the pump body 2, which facilitates the scraping of sewage. A ring of water passage holes 71 is provided on the surface of the scraper 7 so that after the sewage enters the pump body 2, the sewage flows into the scraper 7 through the water passage holes 71. Then the scraper 7 rotates with the drive shaft 6, and discharges the sewage in the pump body 2 into the outlet 3 through the scraper 7.
[0023] Working principle: During installation, firstly, the drive motor 1 is installed in a suitable position on one side of the pump body 2, ensuring that the drive shaft 6 of the drive motor 1 is firmly connected to the scraper inside the pump body 2. Then, the water inlet channel 4 with an anti-winding structure is connected to the other side of the pump body 2. When the water inlet channel 4 is connected to the pump body 2, the seal must be ensured to prevent sewage leakage. After installation, the drive motor 1 is started to drive the drive shaft 6, and the anti-winding blade 52 begins to rotate, cutting or blocking some fibrous materials. Then, the sewage enters the water inlet chamber 511 through the spiral plate 511. The filter screen 53 isolates some large particles that come with it. Then, the diversion plate 54 transports the sewage to the connection between the water inlet channel 4 and the pump body 2. Finally, the first spiral blade 55 prevents fibrous materials from entering the pump body 2 for the last time. Finally, the sewage enters the pump body 2, and the scraper 7 scrapes the sewage into the outlet 3, thus completing the sewage extraction.
[0024] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.
Claims
1. An anti-winding sewage pump comprising a driving motor (1), a pump body (2), a water outlet (3), and a water inlet channel (4), characterized in that: The output end of the drive motor (1) is connected to the pump body (2). The pump body (2) has an outlet (3) on its top and an inlet channel (4) is connected through the center of one side surface of the pump body (2). The inlet channel (4) is provided with an anti-winding structure. One end of the anti-winding structure is fixedly connected to the drive shaft (6). The drive shaft (6) passes through the inlet channel (4) and the pump body (2) and is connected to the output end of the drive motor (1). The anti-winding structure includes a water inlet chamber (51), an anti-winding blade (52), a filter screen (53), a diverter plate (54), and a first spiral blade (55). The water inlet chamber (51) is located inside the water inlet channel (4), and an anti-winding blade (52) is provided on the outside of one end of the water inlet chamber (51), while the filter screen (53) is fixedly connected to the other end. Multiple diverter plates (54) are provided on the outside of the filter screen (53). A drive shaft (6) is fixedly connected to one end of the filter screen (53), and the first spiral blade (55) is fixedly connected to the drive shaft (6) inside the water inlet channel (4).
2. A septic tank pump of the anti-winding construction as claimed in claim 1, characterized in that: The end of the water inlet chamber (51) is a conical structure, and a spiral plate (511) is provided on the outside to control the flow direction of sewage.
3. A sewage pump with an anti-winding structure as described in claim 1, characterized in that: The anti-tangling blade (52) is composed of multiple sharp blades to prevent easily tangled objects such as plastic bags from entering the pump body (2) during sewage extraction.
4. A sewage pump with an anti-winding structure as described in claim 1, characterized in that: The filter screen (53) is surrounded by a ring of multiple flow dividers (54) of different sizes, and each flow divider (54) is tilted in one direction.
5. A sewage pump with an anti-winding structure as described in claim 1, characterized in that: The first spiral blade (55) is composed of spiral blades of various sizes and rotates with the drive shaft (6). The first spiral blade (55) is located on one side of the connection between the water inlet channel (4) and the pump body (2) to prevent unisolated particles or plastic bags in the sewage from entering the pump body (2) and causing entanglement or blockage.
6. A sewage pump with an anti-winding structure as described in claim 1, characterized in that: A wiper blade (7) is provided on the drive shaft (6) inside the pump body (2), and a ring of water passage holes (71) is provided on the surface of the wiper blade (7). The wiper blade (7) rotates with the drive shaft (6).