Stable direct connection type end suction pump

Abstract

The application discloses a stable direct-connection end-suction pump and relates to the mechanical field.The pump housing and the motor are fixedly installed on the top of the mounting seat.A protective cover is installed between the pump housing and the motor.The inner side of the protective cover is provided with a direct-connection head.The inner side of the pump housing is rotatably installed with an impeller.The inner side of the impeller is fixedly installed with a pump shaft.The motor is directly connected with the direct-connection head at one end of the pump shaft through direct clamping, so that the transmission components are reduced, the structure is more compact, the fault points of the direct-connection end-suction pump are greatly reduced, and the reliability of the equipment is remarkably improved.The direct-connection end-suction pump can maintain stable performance in a long-time operation process, and the downtime and maintenance cost caused by equipment failure are reduced.In industrial production, reliable equipment operation is crucial for ensuring the continuity and stability of production, and the high reliability of the direct-connection end-suction pump provides a strong guarantee for enterprises.

Description

Technical Field

[0001] This application relates to the field of machinery, and in particular to stable direct-drive end-suction pumps. Background Technology

[0002] In traditional pump applications, standard end-suction centrifugal pumps hold a crucial position. However, with the continuous development of industrial technology and increasingly stringent performance requirements, the limitations of standard end-suction centrifugal pumps are becoming increasingly apparent. Against the backdrop of energy shortages and increasingly stringent environmental regulations, reducing energy consumption and improving operational efficiency have become important directions for the development of pump equipment. Simultaneously, in areas with specific requirements for installation space and equipment reliability, such as domestic heating and small industrial equipment, the structural complexity and maintenance costs of standard end-suction centrifugal pumps urgently need to be addressed.

[0003] In heating systems, the operational stability of pumps is crucial to ensuring heating performance. Traditional heating pumps typically employ the structure of standard end-suction centrifugal pumps. Their complex transmission systems not only increase energy consumption but are also prone to malfunctions due to component wear and loosening, affecting the normal operation of the heating system. Furthermore, during installation, standard end-suction centrifugal pumps require a large space and complex installation steps, causing numerous inconveniences for the installation and maintenance of heating equipment. Utility Model Content

[0004] To ensure stable operation and reduce installation space requirements, this application provides a stable direct-coupled end-suction pump.

[0005] The stable direct-coupled end-suction pump provided in this application adopts the following technical solution:

[0006] The device includes a pump housing and a motor that are fixedly mounted on the top of the mounting base. A protective cover is installed between the pump housing and the motor. A direct connector is provided on the inner side of the protective cover. An impeller is rotatably mounted on the inner side of the pump housing. A pump shaft is fixedly mounted on the inner side of the impeller. The pump shaft is fixedly connected to the output shaft of the motor through the direct connector in a clamping manner.

[0007] By adopting the above technical solution, the motor is directly clamped to one end of the pump shaft, and the motor can directly drive the impeller to rotate to transport water. This reduces the number of transmission parts, makes the structure more compact, reduces the number of failure points, and maintains stable performance.

[0008] Preferably, protective plates are fixedly installed on both the front and rear sides of the protective cover, and the protective cover is fixedly installed between the pump housing and the motor by screws.

[0009] By adopting the above technical solution and setting a protective plate, the output shaft of the motor can be better protected during motor operation, ensuring the safe and reliable transmission of the motor to the direct-connector and pump shaft.

[0010] Preferably, a shaft seal is fitted onto the outer side of the pump shaft, and the pump shaft is sealed and tightly connected to the center of the pump housing through the shaft seal.

[0011] By adopting the above technical solution, the rubber bellows mechanical seal of the shaft seal is convenient. The bellows hugs the pump shaft, the hugging section is long, the compensation is good, the application conditions are wide, and it is not restricted by the direction of rotation.

[0012] Preferably, the pump housing has a first sealing ring and a second sealing ring on its inner side to protect the impeller, and the impeller is located between the first sealing ring and the second sealing ring.

[0013] By adopting the above technical solution, it is easy to place the impeller between the first sealing ring and the second sealing ring for protection, which can reduce volumetric leakage and effectively protect the impeller and pump casing.

[0014] Preferably, the left side of the pump housing is provided with an inlet for water to enter, and the top of the pump housing is provided with an outlet for water to exit.

[0015] By adopting the above technical solution, the motor drives the direct-connector and pump shaft to rotate, which in turn drives the impeller to rotate inside the pump housing. This allows water to be drawn in through the inlet and then discharged through the outlet, thus performing water transport operations.

[0016] Preferably, the impeller includes blades and an impeller disk, and the pump shaft is fixedly sleeved and installed with the impeller disk.

[0017] By adopting the above technical solution, through the fixed connection between the impeller and the pump shaft, and through the sealing structure set by the first sealing ring and the second sealing ring, the axial force is effectively balanced, resulting in higher efficiency and suitability for places containing media with micro solid particles.

[0018] Preferably, the bottom of the pump housing is fixedly mounted to the top of the mounting base by screws, and the bottom of the motor is fixedly mounted to the top of the mounting base by screws.

[0019] By adopting the above technical solution, the pump housing and motor can be firmly installed on the top of the mounting base with screws, and the motor and pump housing can be aligned and installed, which facilitates the motor to drive the impeller inside the pump housing to rotate and pump water.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. The connection of the pump housing, motor, and protective cover makes the direct-drive end-suction pump simple in structure, with fewer transmission parts, reducing failure points, improving equipment reliability, and lowering maintenance costs. In daily operation, the maintenance of the direct-drive end-suction pump is relatively simple. Only regular inspection and maintenance of key components are needed to ensure the long-term stable operation of the pump.

[0022] 2. By directly clamping the motor to one end of the pump shaft with a direct-drive connector, the number of transmission components is reduced, resulting in a more compact structure. This significantly reduces the number of potential failure points for the direct-drive end-suction pump and greatly improves the reliability of the equipment. During long-term operation, the direct-drive end-suction pump can maintain stable performance, reducing downtime and maintenance costs caused by equipment failure. In industrial production, reliable equipment operation is crucial for ensuring the continuity and stability of production, and the high reliability of the direct-drive end-suction pump provides strong support for enterprises. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the stable direct-drive end-suction pump according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the top-view three-dimensional structure of the embodiments of this application;

[0025] Figure 3 This is a schematic diagram illustrating a portion of the cross-sectional three-dimensional structure of an embodiment of this application;

[0026] Figure 4 This is a schematic diagram illustrating a partial cross-sectional three-dimensional structure, representing a key embodiment of this application.

[0027] Reference numerals in the attached drawings: 1. Mounting base; 2. Pump housing; 3. Motor; 4. Protective cover; 5. Inlet; 6. Outlet; 7. Protective plate; 8. Impeller; 9. Pump shaft; 10. Shaft seal; 11. Straight connector; 12. First sealing ring; 13. Second sealing ring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0029] This application discloses a stable direct-drive end-suction pump, including a pump housing 2 and a motor 3 fixedly mounted on the top of a mounting base 1. A protective cover 4 is installed between the pump housing 2 and the motor 3. A direct connector 11 is provided on the inner side of the protective cover 4. An impeller 8 is rotatably mounted on the inner side of the pump housing 2. A pump shaft 9 is fixedly mounted on the inner side of the impeller 8. The pump shaft 9 is fixedly connected to the output shaft of the motor 3 through the direct connector 11 in a clamping manner.

[0030] By setting up a motor 3, pump shaft 9, and direct connector 11, it is easy to directly clamp the motor 3 to one end of the pump shaft 9 via the direct connector 11. The motor 3 can directly drive the impeller 8 to rotate, thus transporting water. This reduces the number of transmission parts, making the structure more compact and reducing potential failure points. During long-term operation, the direct-coupled end-suction pump can maintain stable performance. Reliable equipment operation is crucial for ensuring the continuity and stability of production. The high reliability of the direct-coupled end-suction pump provides a strong guarantee for enterprises.

[0031] Reference Figure 1 , Figure 2 Protective plates 7 are fixedly installed on both the front and rear sides of the protective cover 4. The protective cover 4 is fixedly installed between the pump housing 2 and the motor 3 by screws.

[0032] By setting up the protective plate 7, the output shaft of the motor 3 can be better protected when the motor 3 is running, ensuring that the transmission of the motor 3 to the direct connector 11 and the pump shaft 9 is safe and reliable.

[0033] Reference Figure 1 , Figure 4 A shaft seal 10 is fitted on the outer side of the pump shaft 9, and the pump shaft 9 is sealed and tightly connected to the center of the pump housing 2 through the shaft seal 10.

[0034] By setting the shaft seal 10, the rubber bellows mechanical seal of the shaft seal 10 is facilitated. The bellows clamps the pump shaft, the clamping section is long, the compensation is good, the application conditions are wide, and it is not restricted by the direction of rotation.

[0035] Reference Figure 3 , Figure 4 The pump housing 2 has a first sealing ring 12 and a second sealing ring 13 on its inner side to protect the impeller 8. The impeller 8 is located between the first sealing ring 12 and the second sealing ring 13.

[0036] By setting the first sealing ring 12 and the second sealing ring 13, the impeller 8 can be placed between the first sealing ring 12 and the second sealing ring 13 for protection, which can reduce volumetric leakage and effectively protect the impeller 8 and the pump housing 2.

[0037] Reference Figure 1 , Figure 2 , Figure 3 The left side of the pump housing 2 is provided with an inlet 5 for water to enter, and the top of the pump housing 2 is provided with an outlet 6 for water to exit.

[0038] The motor 3 drives the direct connector 11 and the pump shaft 9 to rotate, which in turn drives the impeller 8 to rotate inside the pump housing 2. This allows water to be drawn in through the inlet 5 and then discharged through the outlet 6, thus performing water transport operations.

[0039] Reference Figure 3 , Figure 4 The impeller 8 includes blades and a bladed disk, and the pump shaft 9 is fixedly connected to the bladed disk.

[0040] The fixed connection between the impeller 8 and the pump shaft 9, along with the sealing structure provided by the first sealing ring 12 and the second sealing ring 13, effectively balances the axial force, resulting in higher efficiency and suitability for applications containing micro-solid particles.

[0041] Reference Figure 1 , Figure 3 The bottom of the pump housing 2 is fixedly installed to the top of the mounting base 1 by screws, and the bottom of the motor 3 is fixedly installed to the top of the mounting base 1 by screws.

[0042] The pump housing 2 and the motor 3 can be securely installed on the top of the mounting base 1 by screws, which can align the motor 3 and the pump housing 2 for installation, so that the motor 3 can drive the impeller 8 inside the pump housing 2 to rotate and pump water.

[0043] The implementation principle of the stable direct-coupled end-suction pump in this application embodiment is as follows: the output shaft of the motor 3 drives the direct connector 11 and the pump shaft 9 to rotate, so that the pump shaft 9 drives the impeller 8 to rotate between the sealing structure set by the first sealing ring 12 and the second sealing ring 13. This can reduce volumetric leakage and effectively protect the impeller 8 and the pump housing 2. Water can be sucked in through the inlet 5 and then discharged through the outlet 6 for water transportation. The direct clamping connection between the motor 3 and the direct connector 11 at one end of the pump shaft 9 makes the direct-coupled end-suction pump simple in structure, with fewer transmission parts, reducing failure points, improving equipment reliability, and reducing maintenance costs. In daily operation, the maintenance of the direct-coupled end-suction pump is relatively simple. Only regular inspection and maintenance of key components are needed to ensure the long-term stable operation of the pump.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stable direct-drive end-suction pump, characterized in that: The device includes a pump housing (2) and a motor (3) fixedly mounted on the top of the mounting base (1). A protective cover (4) is installed between the pump housing (2) and the motor (3). A direct connector (11) is provided on the inner side of the protective cover (4). An impeller (8) is rotatably mounted on the inner side of the pump housing (2). A pump shaft (9) is fixedly mounted on the inner side of the impeller (8). The pump shaft (9) is fixedly connected to the output shaft of the motor (3) through the direct connector (11).

2. The stable direct-drive end-suction pump according to claim 1, characterized in that: The protective cover (4) is fixedly installed with protective plates (7) on both the front and rear sides. The protective cover (4) is fixedly installed between the pump housing (2) and the motor (3) by screws.

3. The stable direct-drive end-suction pump according to claim 2, characterized in that: A shaft seal (10) is fitted on the outside of the pump shaft (9), and the pump shaft (9) is sealed and tightly connected to the center of the pump housing (2) through the shaft seal (10).

4. The stable direct-drive end-suction pump according to claim 3, characterized in that: The pump housing (2) is provided with a first sealing ring (12) and a second sealing ring (13) to protect the impeller (8), and the impeller (8) is located between the first sealing ring (12) and the second sealing ring (13).

5. The stable direct-drive end-suction pump according to claim 4, characterized in that: The pump housing (2) has an inlet (5) for water to enter on the left side and an outlet (6) for water to exit on the top.

6. The stable direct-drive end-suction pump according to claim 5, characterized in that: The impeller (8) includes blades and a blade disk, and the pump shaft (9) is fixedly sleeved with the blade disk.

7. The stable direct-drive end-suction pump according to claim 6, characterized in that: The bottom of the pump housing (2) is fixedly installed to the top of the mounting base (1) by screws, and the bottom of the motor (3) is fixedly installed to the top of the mounting base (1) by screws.

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