A high-flow anti-clogging sewage pump

Abstract

This utility model discloses a high-flow, anti-clogging sewage pump, relating to the field of sewage pump technology. It includes a pump casing, inside which a drive assembly is installed. A first impeller is mounted on the drive assembly. A second impeller is coaxially mounted on the first impeller. The outer blades of the first impeller are arc-shaped, and the angle between the outer blades of the first impeller and the axis of the first impeller is greater than the angle between the outer blades of the second impeller and the axis of the second impeller. In operation, the drive assembly is powered via a cable, causing the first and second impellers to rotate at high speed. The cooperation of the first and second impellers causes sludge to rapidly flow from a low-pressure area to a high-pressure area. The second impeller generates greater thrust on the sludge, resulting in a larger flow rate and head. This bottom-suction, top-discharge direct-supply sewage pump effectively solves the problem of easy clogging.

Description

Technical Field

[0001] This utility model relates to the field of sewage pump technology, specifically a high-flow anti-clogging sewage pump. Background Technology

[0002] High-flow-rate sewage pumps are specialized devices used to transport sewage containing solid particles, fibers, sludge, and other impurities. Their flow rates typically range from tens to thousands of cubic meters per hour. They play a vital role in municipal engineering, industrial wastewater treatment, and construction.

[0003] Chinese Patent Application No. 202420986920.4 discloses a portable high-flow sewage pump, including a motor assembly and a pump housing. The pump housing is located at the output end of the motor assembly, and a cavity is formed inside the pump housing. An impeller is provided on the output shaft of the motor assembly and extends into the cavity. The pump housing and the motor assembly are detachably connected. A connecting hole is provided in the middle of the impeller. The impeller and the output shaft of the motor assembly are fixed by screws. The cavity includes an inlet and an outlet.

[0004] The sewage pump in the aforementioned patent is a traditional centrifugal pump. Although it plays an important role in sludge transportation, this sewage pump mainly generates radial centrifugal force. Therefore, the pump casing is set in a circular shape, and the outlet is set in the tangential direction of the circular pump casing. This type of pump is difficult to generate a large flow rate and is prone to clogging. Utility Model Content

[0005] The purpose of this utility model is to provide a high-flow-rate, anti-clogging sewage pump that can generate a large flow rate to transport sludge and is not easily clogged, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-flow anti-clogging sewage pump, including

[0008] A pump casing, inside which a drive assembly is installed, the drive assembly includes a stator and a rotor fixed inside the pump casing, wherein a first impeller is installed on the rotating shaft of the rotor; and a second impeller is coaxially installed on the first impeller.

[0009] The blades on the outer side of the first impeller are arranged in an arc shape, and the angle between the blades on the outer side of the first impeller and the axis of the first impeller is greater than the angle between the blades on the outer side of the second impeller and the axis of the second impeller.

[0010] The second impeller is located inside the pump head.

[0011] As a further technical solution of this utility model, the first impeller is located inside the metal mesh cover, and steel rings are welded to both the upper and lower ends of the metal mesh cover; the steel ring located at the upper end of the metal mesh cover is fixed to the pump head by bolts; the steel ring located at the lower end of the metal mesh cover is fixed to the pump casing by bolts.

[0012] As a further technical solution of this utility model, the lower end of the rotor located inside the pump casing is installed in conjunction with the pump casing through a bearing, while the upper end of the rotor is installed in conjunction with a bearing cage through a bearing.

[0013] As a further technical solution of this utility model, the bearing cage is fixed to the sealing seat by bolts; the sealing seat is fixed to the top of the pump casing by bolts.

[0014] As a further technical solution of this utility model, a through hole is provided on one side of the sealing seat, and a cable is sealed and connected in the through hole by a rubber sealing tube.

[0015] As a further technical solution of this utility model, a handle is provided on the outside of the metal mesh cover; the handle is C-shaped, wherein the upper end of the handle is embedded between the pump head and the steel ring; and the lower end of the handle is embedded between the pump housing and the steel ring.

[0016] As a further technical solution of this utility model, the pump head is arranged in a conical cylindrical shape, and the bottom diameter of the pump head is larger than the top diameter.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In use, the present invention supplies power to the drive component via a cable, which drives the first impeller and the second impeller to rotate at high speed. With the cooperation of the first impeller and the second impeller, the mud and sludge are rapidly moved from the low-pressure area to the high-pressure area.

[0019] 2. This utility model, under the action of the second impeller, generates greater thrust on the sludge, and under the pushing action of the second impeller, generates greater flow rate and head; this direct-supply sewage pump with bottom suction and top discharge effectively solves the problem of easy clogging;

[0020] 3. In this utility model, the pump head is arranged in a conical cylindrical shape. When sewage or sludge is discharged, the cross-sectional area of ​​the pump head changes from large to small. Under the condition of a constant flow rate, this increases the flow velocity of the sewage, thereby enabling the sewage pump to have a higher flow rate and head. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This utility model Figure 1 A schematic diagram of the bottom side structure.

[0023] Figure 3 This utility model Figure 1 The main view.

[0024] Figure 4 This utility model Figure 3 AA sectional view.

[0025] Figure 5 This utility model Figure 1 A schematic diagram of the internal structure.

[0026] Figure 6 This utility model Figure 3 A partial structural diagram.

[0027] In the diagram: 1-Pump casing, 2-Sealing seat, 3-Bearing cage, 4-First impeller, 5-Second impeller, 6-Pump head, 7-Handle, 8-Cable, 9-Metal mesh cover, 10-Steel ring, 11-Drive assembly. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 In this embodiment of the utility model, a high-flow anti-clogging sewage pump includes...

[0030] Pump housing 1, inside which a drive assembly 11 is installed. The drive assembly 11 includes a stator and a rotor fixed inside the pump housing 1, wherein a first impeller 4 is installed on the rotating shaft of the rotor; and a second impeller 5 is coaxially installed on the first impeller 4.

[0031] The blades on the outer side of the first impeller 4 are arranged in an arc shape, and the angle between the blades on the outer side of the first impeller 4 and the axis of the first impeller 4 is greater than the angle between the blades on the outer side of the second impeller 5 and the axis of the second impeller 5.

[0032] The second impeller 5 is located inside the pump head 6.

[0033] More specifically, the blades on the outer side of the first impeller 4 are radially and axially twisted spirals distributed around the central axis. This causes the first impeller 4 to generate centrifugal force when rotating, throwing the sludge from the center to the edge, thereby increasing pressure and transporting fluid. Under the action of centrifugal force, the sludge flows efficiently from the low-pressure area at the center to the high-pressure area at the edge, while reducing eddies and minimizing energy loss.

[0034] The blades on the outer side of the second impeller 5 adopt an airfoil curve design. The chord length (distance between the leading and trailing edges of the airfoil) and angle of attack (angle between the airfoil and the fluid flow direction) of the blades gradually change along the axial direction. The angle of attack is large at the inlet end, which enhances the "initial pushing force". As it extends towards the outlet end, the angle of attack gradually decreases, making the fluid flow out more smoothly and reducing wake loss. The flow channel between the blades on the outer side of the second impeller 5 is basically of uniform cross section or slightly expanded. The "meridian curve" of the flow channel is close to a "straight line parallel to the axis", which ensures smooth fluid flow along the axial direction.

[0035] By adopting the above technical solution, the design of the first impeller 4 and the second impeller 5 allows sludge to rapidly flow from the low-pressure area to the high-pressure area. Under the action of the second impeller 5, the sludge generates greater thrust, and under the pushing action of the second impeller 5, a greater flow rate and head are generated. This direct-supply sewage pump with bottom suction and top discharge effectively solves the problem of easy clogging.

[0036] In this embodiment, the first impeller 4 is located inside the metal mesh cover 9, and steel rings 10 are welded to both the upper and lower ends of the metal mesh cover 9; the steel ring 10 located at the upper end of the metal mesh cover 9 is fixed to the pump head 6 by bolts; the steel ring 10 located at the lower end of the metal mesh cover 9 is fixed to the pump casing 1 by bolts.

[0037] By adopting the above technical solution, the metal mesh cover 9 serves to connect the pump head 6 and the pump casing 1, and can also play a filtering and protection role in actual use, greatly avoiding the blockage of the sewage pump.

[0038] In this embodiment, the lower end of the rotor located inside the pump housing 1 is installed in conjunction with the pump housing 1 through a bearing, while the upper end of the rotor is installed in conjunction with the bearing cage 3 through a bearing.

[0039] More specifically, the bearing cage 3 is fixed to the sealing seat 2 by bolts; the sealing seat 2 is fixed to the top of the pump housing 1 by bolts.

[0040] By adopting the above technical solutions, the bearing cage 3 can ensure the stability of the rotor during rotation, and the sealing seat 2 can ensure the sealing of the drive assembly 11 inside the pump casing 1, avoiding water leakage and short circuit.

[0041] In this embodiment, a through hole is provided on one side of the sealing seat 2, and a cable 8 is sealed and connected in the through hole by a rubber sealing tube.

[0042] Cable 8 is used to power the drive component 11. The rubber sealing tube ensures the sealing effect when cable 8 passes through the sealing seat 2, preventing sewage from entering.

[0043] In this embodiment, a handle 7 is provided on the outside of the metal mesh cover 9; the handle 7 is C-shaped, wherein the upper end of the handle 7 is embedded between the pump head 6 and the steel ring 10; and the lower end of the handle 7 is embedded between the pump housing 1 and the steel ring 10.

[0044] The handle 7 makes it easy to carry and move the sewage pump.

[0045] In this embodiment, the pump head 6 is arranged in a conical cylindrical shape, and the bottom diameter of the pump head 6 is larger than the top diameter.

[0046] By adopting the above technical solution, the pump head 6, which is arranged in a conical cylindrical shape, has a cross-sectional area that decreases when sewage or sludge is discharged. Under the condition of a constant flow rate, this increases the flow velocity of the sewage, thereby enabling the sewage pump to have a higher flow rate and head.

[0047] The working principle of this utility model is as follows: During use, the drive component 11 is powered by the cable 8. The drive component 11 drives the first impeller 4 and the second impeller 5 to rotate at high speed. With the cooperation of the first impeller 4 and the second impeller 5, the sludge and dirt rapidly flow from the low-pressure area to the high-pressure area. Under the action of the second impeller 5, the sludge and dirt generate greater thrust, and under the pushing action of the second impeller 5, a greater flow rate and head are generated. This direct-supply sewage pump with bottom suction and top discharge effectively solves the problem of easy clogging. The pump head 6, which is set in a conical cylindrical shape, has a cross-sectional area that decreases when sewage or sludge is discharged. Under the condition of a constant flow rate, this increases the flow velocity of the sewage, thereby enabling the sewage pump to have a higher flow rate and head.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-flow-rate, anti-clogging sewage pump, characterized in that: include The pump casing (1) has a drive assembly (11) installed inside it. The drive assembly (11) includes a stator and a rotor fixed inside the pump casing (1). A first impeller (4) is installed on the rotating shaft of the rotor. A second impeller (5) is coaxially installed on the first impeller (4). The blades on the outer side of the first impeller (4) are arranged in an arc shape, and the angle between the blades on the outer side of the first impeller (4) and the axis of the first impeller (4) is greater than the angle between the blades on the outer side of the second impeller (5) and the axis of the second impeller (5). The second impeller (5) is located inside the pump head (6).

2. The high-flow-rate anti-clogging sewage pump according to claim 1, characterized in that: The first impeller (4) is located inside the metal mesh cover (9), and steel rings (10) are welded to both the upper and lower ends of the metal mesh cover (9); the steel ring (10) at the upper end of the metal mesh cover (9) is fixed to the pump head (6) by bolts; the steel ring (10) at the lower end of the metal mesh cover (9) is fixed to the pump casing (1) by bolts.

3. The high-flow anti-clogging sewage pump according to claim 1, characterized in that: The lower end of the rotor located inside the pump casing (1) is installed in conjunction with the pump casing (1) through a bearing, while the upper end of the rotor is installed in conjunction with the bearing cage (3) through a bearing.

4. The high-flow anti-clogging sewage pump according to claim 3, characterized in that: The bearing cage (3) is fixed to the sealing seat (2) by bolts; the sealing seat (2) is fixed to the top of the pump housing (1) by bolts.

5. The high-flow anti-clogging sewage pump according to claim 4, characterized in that: The sealing seat (2) has a through hole on one side, and a cable (8) is sealed and connected in the through hole by a rubber sealing tube.

6. The high-flow anti-clogging sewage pump according to claim 2, characterized in that: A handle (7) is provided on the outside of the metal mesh cover (9); the handle (7) is C-shaped, wherein the upper end of the handle (7) is embedded between the pump head (6) and the steel ring (10); the lower end of the handle (7) is embedded between the pump housing (1) and the steel ring (10).

7. The high-flow anti-clogging sewage pump according to claim 1, characterized in that: The pump head (6) is arranged in a conical cylindrical shape, and the bottom diameter of the pump head (6) is larger than the top diameter.

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