Horizontal self-cooling circulating chopping type sewage pump

Abstract

The utility model discloses a horizontal type self-cooling circulation chopping type sewage pump, which relates to the technical field of sewage pumps, and comprises a water pump motor, the outer wall of the water pump motor is fixedly sleeved with a water distribution cylinder, the outer wall of the water distribution cylinder is fixedly sleeved with an outer sleeve, one end of the water pump motor is fixedly connected with a bearing seat, and the other end of the water pump motor is fixedly connected with a water pump. One end of an output shaft of the water pump motor penetrates through the middle of the bearing seat, and the outer wall of one side of the bearing seat is fixedly connected with a connecting seat. Dry type installation is adopted, the motor of a closed type self-cooling circulation structure is adopted, mixed cooling liquid of ethylene glycol and distilled water is contained in the motor, and the water pump is provided with an auxiliary impeller; the auxiliary impeller rotates to drive cooling liquid to circularly flow, the cooling liquid takes away heat of the motor, heat exchange is conducted between the cooling liquid and medium water at the pump cover, the cooling liquid continuously circulates, and the motor is fully cooled. The problem of temperature rise during dry-type operation of the submersible motor and the problem of burnout of the submerged motor of the pump house due to inflow water when the submersible motor is directly matched with a dry-type standard motor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage pumps, in particular to a horizontal self-cooling circulating chopping sewage pump. Background Art

[0002] A sewage pump is a type of pump used to transport media containing solid particles, fibers, sewage, and wastewater. It primarily operates through the rotation of its impeller. As the impeller spins at high speed within the pump casing, a low-pressure zone forms in the center of the impeller. Due to the pressure difference between the external atmospheric pressure and this low-pressure zone, sewage and other media are continuously drawn into the pump. The liquid entering the pump gains energy from the rotation of the impeller and, under the action of centrifugal force, is flung toward the edge of the pump casing before being discharged through the pump outlet.

[0003] At present, most existing sewage pumps are vertical submersible installations. Chopper-type sewage pumps are used in places where there is a lot of debris. In some underground sewage pumping stations or some sewage pumping stations that need to operate at low liquid levels, traditional chopper-type sewage pumps cannot meet the needs of low liquid level operation; if dry-type motors are used, when the pump room is flooded, water will enter the motor, the electric pump will not be able to work normally, and the motor may even burn out. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that traditional shredder-type sewage pumps in the prior art are mostly vertical submersible installations and cannot be horizontally dry-operated, and the submersible installation cannot meet the requirements of low liquid level operation, and to propose a horizontal self-cooling circulating shredder-type sewage pump.

[0005] The outer wall of the water pump is fixed with a water-distributing cylinder, and the outer wall of the water pump is fixed with an outer sleeve, one end of the water pump motor is fixedly connected with a bearing seat, one end of an output shaft of the water pump motor passes through the middle of the bearing seat, an outer wall of one side of the bearing seat is fixedly connected with a connecting seat, an outer wall of the connecting seat is connected with a pump cover, an interior of the connecting seat is communicated with the interior of the water-distributing cylinder, the interior of the outer sleeve is communicated with the interior of the water-distributing cylinder, the interior of the outer sleeve is communicated with the interior of the pump cover, one end of the connecting seat is communicated with the interior of the pump cover, an auxiliary impeller is provided inside the connecting seat, the auxiliary impeller is fixedly sleeved on the outer wall of the output shaft of the water pump motor, one end of the outer sleeve is fixedly connected with the pump body, the output shaft end of the water pump motor passes through the inner wall of the pump body and is fixedly connected with the main impeller, and the main impeller is arranged in the cavity of the pump body.

[0006] Preferably, a cutting plate is provided on one side of the main impeller, the cutting plate is fixedly connected to the inner wall of the pump body, and a cutting blade is fixedly connected to the outer wall of the main impeller.

[0007] Preferably, a feed port is opened through the center of the outer wall of the cutting plate, a water inlet pipe is fixedly connected to one side of the pump body, and the interior of the feed port is connected to the interior of the water inlet pipe.

[0008] Preferably, a pump bracket is fixedly connected to the bottom surface of the pump body.

[0009] Preferably, a motor bracket is fixedly connected to the bottom surface of the other end of the water pump motor.

[0010] Preferably, a scraping groove is provided through the outer wall of the cutting plate.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In the utility model, dry installation is adopted and a closed self-cooling circulation structure of the motor is adopted. A mixed coolant of ethylene glycol and distilled water is installed inside the motor. The water pump is equipped with a sub-impeller. The rotation of the sub-impeller drives the coolant to circulate. The coolant takes away the heat of the motor and exchanges heat with the medium water at the pump cover. The coolant circulates continuously, so that the motor is fully cooled, solving the temperature rise problem of the submersible motor during dry operation and the problem of water ingress and burning of the motor when the pump room is flooded and cannot be solved when the dry standard motor is directly matched.

[0013] 2. In the present invention, the cutting edge of the main impeller is combined with the cutting plate, and the feed port of the cutting plate is butterfly-shaped. The debris is cut between the blade cutting edge and the edge of the butterfly-shaped feed port of the cutting plate. In addition, a scraping groove is provided on the cutting plate to discharge the chopped debris and prevent the blade and the end face of the cutting plate from getting stuck. The main impeller and the cutting plate are made of wear-resistant 2Cr13 material and are heat-treated, which can make the cutting parts have a higher hardness, thereby achieving long-term wear-free and long-term cutting ability.

[0014] 3. In the present invention, support frames are provided at both the motor end and the pump end. The motor support is supported on the flange position of the junction box, and the pump head support is supported on the left flange of the water inlet pipe, so that the water pump can be installed horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the internal structure of a horizontal self-cooling circulating shredder-type sewage pump proposed by the utility model;

[0016] Figure 2 This is a structural diagram of the main impeller of a horizontal self-cooling circulating shredder-type sewage pump proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of a cutting plate of a horizontal self-cooling circulating shredder-type sewage pump proposed by the present invention.

[0018] Legend: 1. Motor bracket; 2. Outer sleeve; 3. Water distribution cylinder; 4. Water pump motor; 5. Bearing seat; 6. Connecting seat; 7. Auxiliary impeller; 8. Pump cover; 9. Main impeller; 10. Cutting plate; 11. Pump body; 12. Pump bracket; 13. Water inlet pipe; 14. Cutting blade; 15. Scraper trough; 16. Feed inlet. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: Figure 1 - Figure 3 As shown, the utility model provides a horizontal self-cooling circulating shredding sewage pump, including a water pump motor 4, the outer wall of the water pump motor 4 is fixedly sleeved with a water dividing cylinder 3, the outer wall of the water dividing cylinder 3 is fixedly sleeved with an outer sleeve 2, one end of the water pump motor 4 is fixedly connected to a bearing seat 5, one end of the output shaft of the water pump motor 4 passes through the middle of the bearing seat 5, one side outer wall of the bearing seat 5 is fixedly connected to a connecting seat 6, the outer wall of the connecting seat 6 is sleeved with a pump cover 8, the interior of the connecting seat 6 is communicated with the interior of the water dividing cylinder 3, the interior of the outer sleeve 2 is communicated with the interior of the water dividing cylinder 3, the interior of the outer sleeve 2 is communicated with the interior of the pump cover 8, one end of the connecting seat 6 is communicated with the interior of the pump cover 8, an auxiliary impeller 7 is provided inside the connecting seat 6, the auxiliary impeller 7 is fixedly sleeved on the outer wall of the output shaft of the water pump motor 4, one end of the outer sleeve 2 is fixedly connected to the pump body 11, the output shaft end of the water pump motor 4 passes through the inner wall of the pump body 11 and is fixedly connected to the main impeller 9, and the main impeller 9 is arranged in the cavity of the pump body 11.

[0022] The following is a detailed description of the specific configuration and function of this embodiment. Through the configuration of the outer sleeve 2, the water separation cylinder 3, and the auxiliary impeller 7, as the water pump motor 4 runs, the auxiliary impeller 7 drives the coolant to flow; it passes through the inner channel of the connecting seat 6, the bearing seat 5, and then reaches the outer surface of the water pump motor 4 and the inner surface of the water separation cylinder 3. At this time, the coolant takes away the heat inside the motor, causing the coolant to heat up here. The coolant continues to flow, flows to the outer surface of the water separation cylinder 3 and the inside of the outer sleeve 2, and then the coolant begins to exchange heat with the air through the outer sleeve 2. Part of the heat is transferred to the air, and the coolant begins to slowly cool down. The coolant continues to flow, passes through the outer channel of the connecting seat 6, and reaches the pump cover 8. Here, the coolant passes through the pump cover 8 and exchanges most of the heat of the coolant to the medium water, thereby keeping the temperature of the coolant at a low level. The coolant then passes through the auxiliary impeller 7 and circulates over and over again. The heat of the motor is continuously dissipated, ensuring the reliable operation of the motor.

[0023] Example 2: Figure 1 - Figure 3 As shown, a cutting plate 10 is provided on one side of the main impeller 9, and the cutting plate 10 is fixedly connected to the inner wall of the pump body 11. The outer wall of the main impeller 9 is fixedly connected to a cutting blade 14. A feed port 16 is opened through the center of the outer wall of the cutting plate 10. A water inlet pipe 13 is fixedly connected to one side of the pump body 11. The interior of the feed port 16 is connected to the interior of the water inlet pipe 13. A pump bracket 12 is fixedly connected to the bottom surface of the pump body 11. The bottom surface of the other end of the water pump motor 4 is fixedly connected to the motor bracket 1. A scraper groove 15 is opened through the outer wall of the cutting plate 10.

[0024] The effect achieved by the entire embodiment is that the main impeller 9 adopts a semi-open impeller, the impeller serves as a hydraulic component, and its blades also serve as cutting edges 14, which are matched with the cutting plate 10. The feed port 16 of the cutting plate 10 is butterfly-shaped, and debris is cut at the blade cutting edge and the edge of the butterfly-shaped feed port 16 of the cutting plate 10. In addition, a scraping groove 15 is provided on the cutting plate 10 to discharge the chopped debris and prevent the blade and the end face of the cutting plate 10 from getting stuck. The main impeller 9 and the cutting plate 10 are made of wear-resistant 2Cr13 material and are heat-treated, so that the cutting parts have a higher hardness, thereby achieving long-term wear-free and long-term cutting ability.

[0025] The usage and working principle of this device: the motor of the water pump adopts a closed self-cooling circulation structure. Two sleeves are provided on the outside of the motor, namely the outer sleeve 2 and the water separation cylinder 3. There is an auxiliary impeller 7 in the water pump. As the motor runs, the auxiliary impeller 7 drives the coolant to flow; it passes through the inner channel of the connecting seat 6, the bearing seat 5, and then reaches the outer surface of the water pump motor 4 and the inner surface of the water separation cylinder 3. At this time, the coolant takes away the heat inside the motor, causing the coolant to heat up here. The coolant continues to flow and flows to the outer surface of the water separation cylinder 3 and the inside of the outer sleeve 2. At this time, the coolant begins to exchange heat with the air through the outer sleeve 2. Part of the heat is transferred to the air, and the coolant begins to cool down slowly. The coolant continues to flow, passes through the outer channel of the connecting seat 6, and reaches the pump cover 8. The coolant passes through the pump cover 8 here and exchanges most of the heat of the coolant to the medium water through the pump cover 8, thereby making the temperature of the coolant at a lower level, and then passes through the auxiliary impeller 7 to circulate over and over again. The heat of the motor is continuously dissipated to ensure the reliable operation of the motor. The main impeller 9 adopts a semi-open impeller. The impeller serves as a hydraulic component and its blades also serve as cutting edges 14. In conjunction with the cutting plate 10, the feed port 16 of the cutting plate 10 is a butterfly-shaped inlet. The debris is cut at the edge of the blade cutting edge and the butterfly-shaped feed port 16 of the cutting plate 10. In addition, a scraping groove 15 is provided on the cutting plate 10 to discharge the chopped debris and prevent the blade and the end face of the cutting plate 10 from getting stuck. The main impeller 9 and the cutting plate 10 are made of wear-resistant 2Cr13 material and are heat-treated, which can make the cutting parts have a higher hardness, thereby achieving long-term wear-free and long-term cutting ability.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A horizontal self-cooling circulating shredder sewage pump, comprising a water pump motor (4), characterized in that: The outer wall of the water pump motor (4) is fixedly sleeved with a water dividing cylinder (3), the outer wall of the water dividing cylinder (3) is fixedly sleeved with an outer sleeve (2), one end of the water pump motor (4) is fixedly connected to a bearing seat (5), one end of the output shaft of the water pump motor (4) passes through the middle of the bearing seat (5), one side outer wall of the bearing seat (5) is fixedly connected to a connecting seat (6), the outer wall of the connecting seat (6) is sleeved with a pump cover (8), the interior of the connecting seat (6) is communicated with the interior of the water dividing cylinder (3), the interior of the outer sleeve (2) is communicated with the interior of the water dividing cylinder ( 3), the interior of the outer sleeve (2) is communicated with the interior of the pump cover (8), one end of the connecting seat (6) is communicated with the interior of the pump cover (8), an auxiliary impeller (7) is provided inside the connecting seat (6), the auxiliary impeller (7) is fixedly sleeved on the outer wall of the output shaft of the water pump motor (4), one end of the outer sleeve (2) is fixedly connected to the pump body (11), the output shaft end of the water pump motor (4) passes through the inner wall of the pump body (11) and is fixedly connected to the main impeller (9), and the main impeller (9) is provided in the cavity of the pump body (11).

2. A horizontal self-cooling circulating shredder sewage pump according to claim 1, characterized in that: A cutting plate (10) is provided on one side of the main impeller (9), the cutting plate (10) is fixedly connected to the inner wall of the pump body (11), and a cutting blade (14) is fixedly connected to the outer wall of the main impeller (9).

3. A horizontal self-cooling circulating shredder sewage pump according to claim 2, characterized in that: A feed port (16) is provided through the center of the outer wall of the cutting plate (10), a water inlet pipe (13) is fixedly connected to one side of the pump body (11), and the interior of the feed port (16) is connected to the interior of the water inlet pipe (13).

4. A horizontal self-cooling circulating shredder sewage pump according to claim 3, characterized in that: A pump bracket (12) is fixedly connected to the bottom surface of the pump body (11).

5. The horizontal self-cooling circulating shredder sewage pump according to claim 1, characterized in that: The bottom surface of the other end of the water pump motor (4) is fixedly connected to a motor bracket (1).

6. A horizontal self-cooling circulating shredder-type sewage pump according to claim 2, characterized in that: A scraping groove (15) is provided through the outer wall of the cutting plate (10).

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