Double-suction rotary shell pump

Abstract

The utility model discloses a double suction rotary casing pump, including rotor part, suspension casing, rotor cavity shell, casing pump cover and water inlet and outlet body, the casing pump cover is provided on the right side of the suspension casing, the rotor part is provided inside the suspension casing, one end of the rotor part extends to the left side of the suspension casing, the water inlet and outlet body is provided on the right side of the casing pump cover, and the rotor cavity shell is provided on the right side of the casing pump cover. The rotor cavity shell is arranged at the right end of the rotor component; the rotor cavity shell comprises a front pump shell and a rear pump shell, the front pump shell is arranged at the right end of the rotor component, the rear pump shell is arranged on the right side of the front pump shell, impellers are arranged on the inner side of the front pump shell and the inner side of the rear pump shell, an inner hole is formed in the right side of the water inlet and outlet body and is an outlet, an inlet is formed in the top of the water inlet and outlet body, and an outlet is formed in the right side of the water inlet and outlet body. A collecting pipe penetrating through the rear pump shell and extending into the front pump shell is arranged on the inner side of the inner hole, and the double-suction rotary shell pump has the advantages of being high in working efficiency, low in vibration noise and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of volute pumps, in particular to a double-suction volute pump. Background Art

[0002] The volute pump, also known as the Pitot tube pump, is a low specific speed pump with a special structure. It is suitable for small flow and high head; it is also suitable for high-speed pumps.

[0003] Traditional volute pumps are generally single-stage single-suction type with low efficiency. Due to unbalanced liquid flow, the pump vibrates and makes a lot of noise when running at a large flow rate, which shortens the service life of the volute pump.

[0004] Therefore, a double-suction volute pump is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a double-suction volute pump to solve the above problems.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A double-suction vortex casing pump comprises a rotor component, a suspension casing, a rotor cavity casing, a casing pump cover and an inlet and outlet water body, wherein the casing pump cover is arranged on the right side of the suspension casing, the rotor component is arranged inside the suspension casing and one end extends to the left thereof, the inlet and outlet water body is arranged on the right side of the casing pump cover, and the rotor cavity casing is arranged at the right end of the rotor component; the rotor cavity casing comprises a front pump casing and a rear pump casing, the front pump casing is arranged at the right end of the rotor component, the rear pump casing is arranged on the right side of the front pump casing, impellers are arranged on the inner sides of the front pump casing and the rear pump casing, an inner hole is opened on the right side of the inlet and outlet water body, the inner hole is an outlet, an inlet is arranged on the top of the inlet and outlet water body, and a collecting pipe is arranged on the inner side of the inner hole, which passes through the rear pump casing and extends to the inside of the front pump casing.

[0008] Preferably, the rotor component includes a main shaft, a bearing and a rotating plate. The interior of the suspension shell is provided with a main shaft extending to its left, the main shaft is provided with a bearing connected to the inner wall of the suspension shell, and the right end of the main shaft is provided with a rotating plate connected to the front pump shell.

[0009] Preferably, a bearing cover 1 and a bearing cover 2 are respectively provided between the left and right ends of the main shaft and the inner wall of the suspension housing.

[0010] Preferably, a water-absorbing sealing gasket is provided between the collecting pipe and the inner hole.

[0011] Preferably, a lifting ring is provided on the outer side of the suspension housing.

[0012] Preferably, a mechanical seal is provided between the rear pump casing and the inlet and outlet water bodies, and gap seals are provided between the front pump casing, the rear pump casing and the manifold.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the volute pump adopts a double-suction structure, which increases the maximum flow rate of the volute pump, makes the volute pump have good suction performance, and improves working efficiency. Due to the symmetry of the internal liquid flow, the natural frequency of the volute pump is increased, the vibration noise problem of the pump is effectively solved, the vibration noise is reduced, and the service life of the volute pump is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 This is a front view and sectional view of the utility model;.

[0016] In the attached figure: 1. Main shaft; 2. Bearing cover 1; 3. Suspension housing; 4. Bearing; 5. Bearing cover 2; 6. Rotating tray; 7. Lifting ring; 8. Front pump housing; 9. Collecting pipe; 10. Rear pump housing; 11. Housing pump cover; 12. Mechanical seal; 13. Inlet and outlet water body; 14. Water absorption seal; 15. Impeller. DETAILED DESCRIPTION

[0017] The following describes the embodiments of the utility model in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0020] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0021] In this embodiment, Figure 1A double-suction vortex casing pump is provided. The utility model comprises a rotor component, a suspension casing 3, a rotor cavity casing, a casing pump cover 11 and an inlet and outlet water body 13. The casing pump cover 11 is arranged on the right side of the suspension casing 3, the rotor component is arranged inside the suspension casing 3 and one end extends to its left side, the inlet and outlet water body 13 is arranged on the right side of the casing pump cover 11, and the rotor cavity casing is arranged at the right end of the rotor component; the rotor cavity casing comprises a front pump casing 8 and a rear pump casing 10, the front pump casing 8 is arranged at the right end of the rotor component, the rear pump casing 10 is arranged on the right side of the front pump casing 8, an impeller 15 is arranged on the inner sides of the front pump casing 8 and the rear pump casing 10, an inner hole is opened on the right side of the inlet and outlet water body 13, the inner hole is an outlet, an inlet is arranged on the top of the inlet and outlet water body 13, and a collecting pipe 9 is arranged on the inner side of the inner hole, which passes through the rear pump casing 10 and extends to the inside of the front pump casing 8.

[0022] In this embodiment, the rotor component is driven by an external motor, which in turn drives the rotor cavity shell to rotate. When the rotor cavity shell rotates, the front pump shell 8 and the rear pump shell 10 rotate at the same time, and the impellers 15 on the two rotate accordingly. After the impeller 15 rotates, the mechanical energy is converted into the pressure energy of the liquid, so that the liquid flows from the inlet to the impeller outlet, and the flow is symmetrical. The manifold 9 collects the high-pressure water at the outlet of the impeller 15 and transmits it to the outlet of the volute pump. Due to the double-suction structure, the maximum flow rate of the volute pump is increased, and the volute pump has good suction performance. Due to the symmetry of the internal liquid flow, the natural frequency of the volute pump is increased, which effectively solves the vibration and noise problems of the pump and extends the service life of the volute pump.

[0023] Preferably, as another embodiment of the utility model, the rotor component includes a main shaft 1, a bearing 4 and a rotating tray 6. The interior of the suspension housing 3 is provided with a main shaft 1 extending to its left, and the main shaft 1 is provided with a bearing 4 connected to the inner wall of the suspension housing 3. The right end of the main shaft 1 is provided with a rotating tray 6 connected to the front pump housing 8.

[0024] In this embodiment, the volute pump is driven to rotate by an external motor, and the motor output shaft is coaxially connected to the main shaft 1. When the motor drives the main shaft 1 to rotate, the main shaft 1 rotates together with the rotating tray 6, and the rotating tray 6 rotates with the rotor cavity shell, thereby realizing power transmission, and then driving the rotor cavity shell to rotate.

[0025] Preferably, as another embodiment of the present utility model, a bearing cover 1 2 and a bearing cover 2 5 are respectively provided between the left and right ends of the main shaft 1 and the inner wall of the suspension housing 3 .

[0026] In this embodiment, the main shaft 1 can be assembled with the suspension housing 3 through the bearing cover 1 2 and the bearing cover 2 5 .

[0027] Preferably, as another embodiment of the utility model, a water-absorbing sealing pad 14 is provided between the collecting pipe 9 and the inner hole, the inlet and outlet water bodies 13 and the water-absorbing sealing pad 14 form a seal, and leakage is prevented between the outlet and the inlet. To prevent leakage, a lifting ring 7 is provided on the outside of the suspension housing 3, and the lifting ring 7 can be used for lifting the pump.

[0028] Preferably, as another embodiment of the utility model, a mechanical seal 12 is provided between the rear pump casing 10 and the inlet and outlet water bodies 13, and the mechanical seal 12 can effectively prevent leakage of liquid in the pump and ensure the normal operation and working efficiency of the pump, wherein the sealing pressure is the pressure of the inlet to achieve sealing, and gap seals are provided between the front pump casing 8 and the rear pump casing 10 and the manifold 9, so that the rotor cavity casing composed of the front pump casing 8 and the rear pump casing 10 can rotate smoothly on the manifold 9.

[0029] Working principle: the main shaft 1 on the volute pump can be connected to the output shaft of the motor of the peripheral device. When the motor is driven to rotate, the main shaft 1 of the volute pump rotates together with the rotating tray 6, and the rotating tray 6 rotates with the rotor cavity shell. When the rotor cavity shell rotates, the front pump shell 8 and the rear pump shell 10 and the impellers 15 on the two rotate at the same time. After the impeller 15 rotates, the mechanical energy is converted into the pressure energy of the liquid, so that the liquid flows from the inlet to the impeller outlet, and the flow is symmetrical. The manifold 9 collects the high-pressure water at the outlet of the impeller 15 and transports it to the outlet of the volute pump.

[0030] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "certain embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A double suction volute pump, characterized in that: The invention comprises a rotor component, a suspension housing (3), a rotor cavity housing, a housing pump cover (11) and an inlet and outlet water body (13), wherein the housing pump cover (11) is arranged on the right side of the suspension housing (3), the rotor component is arranged inside the suspension housing (3) and one end extends to the left side thereof, the inlet and outlet water body (13) is arranged on the right side of the housing pump cover (11), and the rotor cavity housing is arranged at the right end of the rotor component; the rotor cavity housing comprises a front pump housing (8) and a rear pump housing (10), The front pump casing (8) is arranged at the right end of the rotor component, and the rear pump casing (10) is arranged on the right side of the front pump casing (8). Impellers (15) are arranged on the inner sides of the front pump casing (8) and the rear pump casing (10). An inner hole is opened on the right side of the inlet and outlet water body (13), and the inner hole is an outlet. An inlet is arranged on the top of the inlet and outlet water body (13). A collecting pipe (9) is arranged on the inner side of the inner hole, which passes through the rear pump casing (10) and extends to the interior of the front pump casing (8).

2. A double-suction volute pump according to claim 1, characterized in that: The rotor component comprises a main shaft (1), a bearing (4) and a rotating tray (6); the interior of the suspension housing (3) is provided with a main shaft (1) extending to the left thereof; the main shaft (1) is sleeved with a bearing (4) connected to the inner wall of the suspension housing (3); and the right end of the main shaft (1) is provided with a rotating tray (6) connected to the front pump housing (8).

3. A double-suction volute pump according to claim 2, characterized in that: A bearing cover 1 (2) and a bearing cover 2 (5) are respectively provided between the left and right ends of the main shaft (1) and the inner wall of the suspension housing (3).

4. A double-suction volute pump according to claim 1, characterized in that: A water-absorbing sealing gasket (14) is provided between the collecting pipe (9) and the inner hole.

5. A double-suction volute pump according to claim 1, characterized in that: A lifting ring (7) is provided on the outer side of the suspension housing (3).

6. A double-suction volute pump according to claim 1, characterized in that: A mechanical seal (12) is provided between the rear pump casing (10) and the inlet and outlet water bodies (13), and gap seals are provided between the front pump casing (8) and the rear pump casing (10) and the manifold (9).

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