Assembly type guide vane outflow channel submersible tubular pump

Abstract

The utility model relates to fluid machinery field, a kind of assembly type guide vane outer flow channel submersible cross-flow pump.The core structure is sequentially fixedly connected by water inlet horn mouth, impeller casing, guide vane body shell, connecting cylinder and motor casing, and each component cavity is connected to form medium flow channel.Leaf wheel component is equipped in impeller casing, guide vane body assembly is built-in in guide vane body shell, and submersible motor assembly is installed in motor casing, and it is driven through planetary gear reducer in connecting cylinder between it and guide vane body assembly, and motor assembly side end is equipped with fairing.Guide vane body assembly innovatively designs outer flow channel structure, and flow channel is respectively formed by the back of guide vane and guide vane body shell inner wall, working surface and guide vane hub outer surface, and fluid guiding efficiency is optimized.Each component is connected by flange structure pairing, and sealing gasket is supplemented to ensure sealing, and external stable base enhances installation stability.

Description

Technical Field

[0001] This utility model relates to the field of fluid machinery, and is a prefabricated guide vane external flow channel submersible cross-flow pump. Background Technology

[0002] Submersible axial flow pumps are widely used in water conservancy and industrial fluid transportation due to their horizontal installation and high efficiency and energy saving characteristics. However, the current assembly process for the guide vane body presents many difficulties, affecting production efficiency and equipment performance. A submersible axial flow pump mainly consists of a pump head, a reducer, and a submersible motor. The flow channel is formed by the inner and outer flow channels of the pump head and the submersible motor, and the guide vane body connects the inner and outer flow channels through guide vanes. In the current assembly process, the guide vane body is assembled as a whole, but this has revealed two major problems: First, the operation of tightening the inner flow channel flange is limited. Whether tightening the bolts directly along the water flow direction or having personnel enter the flow channel of the submersible motor assembly, the axial length of the guide vane body and the space occupied by the guide vanes present problems such as difficulty in tightening, narrow working space, and harsh environment. Second, assembly accuracy is difficult to guarantee. The guide vane body needs to be tightened with both the inner and outer flow channel flanges simultaneously, but the matching flanges have cumulative assembly tolerances. This not only increases the machining accuracy requirements of individual parts, but also makes it difficult to completely overcome the impact of tolerances. Utility Model Content

[0003] A prefabricated guide vane external flow channel submersible cross-flow pump includes an inlet bell mouth, an impeller housing, a guide vane body outer shell, a connecting cylinder, and a motor housing. The inlet bell mouth, impeller housing, guide vane body outer shell, connecting cylinder, and motor housing are sequentially fixedly connected to each other to form an integral structure. The water inlet bell, impeller housing, guide vane housing, connecting cylinder, and motor housing are all cavities, and the cavities are interconnected to form a medium flow channel. An impeller component is provided inside the impeller housing, a guide vane assembly is provided inside the guide vane housing (3), a submersible motor assembly is provided inside the motor housing, a flow guide is provided on one side of the submersible motor assembly, a planetary gear reducer is provided between the submersible motor assembly and the guide vane assembly, and the planetary gear reducer is located inside the connecting cylinder.

[0004] Preferably, the guide vane assembly includes a guide vane hub and guide vanes.

[0005] Preferably, the guide vane assembly is provided with an outer flow channel and an inner flow channel. The outer flow channel is composed of the back side of the guide vane and the inner wall of the guide vane housing (3). The inner flow channel is composed of the working surface of the guide vane and the outer surface of the guide vane hub.

[0006] Preferably, a stable base is fixedly connected to one side of the outer surface of the water inlet horn, the guide vane shell, and the motor housing.

[0007] Preferably, any two adjacent components among the water inlet bell, impeller housing, guide vane housing, connecting cylinder, and motor housing are connected by a paired flange structure, and are locked and fixed with matching nuts after a set of flange bolts pass through the corresponding bolt holes on the paired flange.

[0008] Preferably, a sealing gasket is provided between any two adjacent components via a paired flange structure, and the sealing gasket is an annular structure.

[0009] The beneficial effects of this utility model are as follows: 1. The utility model adopts a modular design, with each component quickly connected via mating flange structures and bolts and nuts. Compared to the complex operation of traditional assembly, which requires tightening bolts deep into the flow channel, this greatly reduces assembly steps and operational difficulty. Simultaneously, it avoids the installation difficulties caused by space constraints and accumulated tolerances during the assembly of the integral guide vane body, significantly shortening assembly time and reducing labor costs and technical barriers. 2. The utility model's stable base provides solid support for the water inlet bell, guide vane shell, and motor housing, reducing vibration and noise during pump operation. The rational layout of the planetary gear reducer, guide shroud, and submersible motor assembly optimizes the power transmission path. Combined with the guide vane assembly's effective guidance of water flow, it can reduce hydraulic losses and improve operating efficiency and stability.

[0010] 3. The utility model adds an annular sealing gasket between adjacent components, which effectively fills the flange connection gap, prevents media leakage, and improves the sealing performance and safety of the pump in underwater or high-pressure environments; at the same time, the sealing gasket can buffer vibration, extend the service life of the equipment, and reduce the frequency and cost of maintenance. 4. The utility model prefabricated structure breaks down complex assemblies into independent components, reducing the machining accuracy requirements of individual parts and decreasing the scrap rate caused by cumulative assembly tolerances. During equipment maintenance, faulty components can be disassembled individually for replacement or repair without overall disassembly, further improving maintenance convenience and economy. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a submersible cross-flow pump with an assembled guide vane and external flow channel according to the present invention.

[0012] Figure 2 This is a schematic diagram showing the connection relationship between the guide vane shell and the guide vane assembly of a submersible cross-flow pump with an assembled guide vane external flow channel according to the present invention.

[0013] Figure 3This is a schematic diagram showing the disassembled blade shell and guide vane assembly of a submersible cross-flow pump with an external flow channel according to the present invention.

[0014] In the diagram: 1. Inlet bell; 2. Impeller housing; 3. Guide vane housing; 4. Connecting cylinder; 5. Motor housing; 6. Impeller assembly; 7. Submersible motor assembly; 8. Flow guide; 9. Guide vane assembly; 91. Guide vane hub; 92. Guide vane; 93. Outer flow channel of guide vane; 94. Inner flow channel of guide vane; 10. Planetary gear reducer; 11. Stabilizing base. Detailed Implementation

[0015] A prefabricated guide vane external flow channel submersible cross-flow pump includes an inlet bell mouth 1, an impeller housing 2, a guide vane body shell (3), a connecting cylinder 4, and a motor housing 5. The inlet bell mouth 1, impeller housing 2, guide vane body shell (3), connecting cylinder 4, and motor housing 5 are sequentially fixedly connected to each other to form an integral structure. The inlet bell mouth 1, impeller housing 2, guide vane body shell (3), connecting cylinder 4, and motor housing 5 are all cavities, and the cavities are sequentially connected to each other to form a medium flow channel. An impeller component 6 is provided inside the impeller housing 2, a guide vane assembly 9 is provided inside the guide vane body shell (3), a submersible motor assembly 7 is provided inside the motor housing 5, a flow guide shroud 8 is provided on one side of the submersible motor assembly 7, and a planetary gear reducer 10 is provided between the submersible motor assembly 7 and the guide vane body assembly 9. The planetary gear reducer 10 is located inside the connecting cylinder 4.

[0016] The guide vane assembly 9 includes a guide vane hub 91 and guide vanes 92.

[0017] The guide vane assembly 9 is provided with an outer flow channel 93 and an inner flow channel 94. The outer flow channel 93 is composed of the back side of the guide vane 92 and the inner wall of the guide vane housing (3). The inner flow channel 94 is composed of the working surface of the guide vane 92 and the outer surface of the guide vane hub 91.

[0018] A stable base 11 is fixedly connected to one side of the outer surface of the water inlet horn 1, the guide vane shell (3), and the motor housing 5.

[0019] Any two adjacent components among the water inlet bell 1, impeller housing 2, guide vane housing 3, connecting cylinder 4, and motor housing 5 are connected by a paired flange structure, and are then locked and fixed with matching nuts after a set of flange bolts are passed through the corresponding bolt holes on the paired flanges.

[0020] A sealing gasket is provided between any two adjacent components via a mating flange structure.

[0021] The embodiments of this utility model are as follows: A prefabricated submersible cross-flow pump with an external guide vane channel includes an inlet bell mouth 1, an impeller housing 2, a guide vane housing 3, a connecting cylinder 4, and a motor housing 5. The inlet bell mouth 1, impeller housing 2, guide vane housing 3, connecting cylinder 4, and motor housing 5 are sequentially and fixedly connected to each other to form an integral structure. Each of these components—inlet bell mouth 1, impeller housing 2, guide vane housing 3, connecting cylinder 4, and motor housing 5—is a cavity, and these cavities are sequentially interconnected, forming a medium flow channel. A stable base is fixedly connected to one side of the outer surface of each of the inlet bell mouth 1, guide vane housing 3, and motor housing 5.

[0022] Impeller housing 2 is provided with impeller component 6, guide vane housing 3 is provided with guide vane assembly 9, motor housing 5 is provided with submersible motor assembly 7, a flow guide shroud 8 is provided on one side of submersible motor assembly 7, and a planetary gear reducer 10 is provided between submersible motor assembly 7 and guide vane assembly 9, and the planetary gear reducer 10 is located in connecting cylinder 4.

[0023] The guide vane assembly 9 includes a guide vane hub 91 and a guide vane 92. The guide vane assembly 9 is provided with an outer flow channel 93 and an inner flow channel 94. The outer flow channel 93 is formed by the back side of the guide vane 92 and the inner wall of the guide vane housing 3. The inner flow channel 94 is formed by the working surface of the guide vane 92 and the outer surface of the guide vane hub 91.

[0024] Any two adjacent components among the following: inlet bell 1, impeller housing 2, guide vane housing 3, connecting cylinder 4, and motor housing 5, are connected via a paired flange structure. They are secured by a set of flange bolts passing through the corresponding bolt holes on the paired flanges and then locked with matching nuts. A sealing gasket, which is an annular structure, is provided between each pair of adjacent components connected by the paired flange structure.

[0025] In this embodiment, during assembly, after the submersible motor assembly 7 is installed inside the motor housing 5, the guide shield 8 is fixed to one side. Then, the planetary gear reducer 10 is installed into the connecting cylinder 4 and connected to the output shaft of the submersible motor assembly 7. The connecting cylinder 4 is then fixed to the motor housing 5 using a mating flange structure, bolts, and nuts, while a sealing gasket is placed between the flanges to ensure a tight seal. Next, the guide vane assembly 9 is installed into the guide vane housing 3. The guide vane housing 3 is connected to the connecting cylinder 4 via the flange structure, flange bolts are inserted, and matching nuts are tightened, while the sealing gasket is installed simultaneously. Finally, the inlet bell 1 is connected to the impeller housing 2 via the flange structure, flange bolts are inserted, nuts are tightened, and a sealing gasket is installed to ensure a tight and well-sealed connection of all components.

Claims

1. A prefabricated guide vane external flow channel submersible axial flow pump, characterized in that, It includes an inlet bell (1), an impeller housing (2), a guide vane housing (3), a connecting cylinder (4), and a motor housing (5). The inlet bell (1), impeller housing (2), guide vane housing (3), connecting cylinder (4), and motor housing (5) are sequentially fixedly connected to each other to form an integral structure. The water inlet bell (1), impeller housing (2), guide vane housing (3), connecting cylinder (4), and motor housing (5) are all cavities, and the cavities are connected to each other in sequence to form a medium flow channel; An impeller component (6) is provided inside the impeller housing (2), a guide vane assembly (9) is provided inside the guide vane housing (3), a submersible motor assembly (7) is provided inside the motor housing (5), a flow guide (8) is provided on one side of the submersible motor assembly (7), and a planetary gear reducer (10) is provided between the submersible motor assembly (7) and the guide vane assembly (9), and the planetary gear reducer (10) is located inside the connecting cylinder (4).

2. The assembled guide vane external flow channel submersible axial flow pump according to claim 1, characterized in that, The guide vane assembly (9) includes a guide vane hub (91) and guide vanes (92).

3. A prefabricated guide vane external flow channel submersible axial flow pump according to claim 2, characterized in that, The guide vane assembly (9) is provided with an outer flow channel (93) and an inner flow channel (94). The outer flow channel (93) is composed of the back side of the guide vane (92) and the inner wall of the guide vane housing (3). The inner flow channel (94) is composed of the working surface of the guide vane (92) and the outer surface of the guide vane hub (91).

4. A prefabricated guide vane external flow channel submersible axial flow pump according to claim 1, characterized in that, The water inlet horn (1), the guide vane shell (3), and the motor shell (5) are all fixedly connected to one side of the outer surface of the water inlet horn (1), the guide vane shell (3), and the motor shell (5).

5. A prefabricated guide vane external flow channel submersible axial flow pump according to claim 1, characterized in that, Any two adjacent components among the water inlet bell (1), impeller housing (2), guide vane housing (3), connecting cylinder (4), and motor housing (5) are connected by a paired flange structure, and are locked and fixed with matching nuts after a set of flange bolts are inserted through the corresponding bolt holes on the paired flange.

6. A prefabricated guide vane external flow channel submersible axial flow pump according to claim 5, characterized in that, A sealing gasket is provided between any two adjacent components via a paired flange structure.

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