Impeller assembly of submersible pump for well

Abstract

The utility model discloses an impeller assembly of a submersible pump for a well, which comprises a transmission shaft rod and a pump shell, the transmission shaft rod is inserted in the center of the pump shell, a plurality of impeller bodies and diffusers are sleeved outside the transmission shaft rod, the impeller bodies and the diffusers are used in groups, the impeller bodies and the transmission shaft rod synchronously rotate, and the diffusers and the pump shell are relatively fixed. The transmission shaft rod drives the impeller body to rotate in the pump shell; water flow is driven to flow under the centrifugal effect of rotation of the impeller body, and flowing water penetrates through the diffuser and linearly converges and flows in the direction of the transmission shaft rod. The integrated design of the energy gathering ring and the base plate is adopted, the strength of the centrifugal blade can be improved through the base plate, the energy gathering ring and the rib plates, it is guaranteed that the centrifugal blade cannot deform under the condition of high-speed water absorption, the lift of the submersible pump is increased, and the submersible pump can be used in a deep well more easily.

Description

Technical Field

[0001] This utility model relates to the field of submersible pump technology, specifically to an impeller assembly for a well submersible pump. Background Technology

[0002] Submersible pumps are essential equipment for deep well water extraction. During operation, the entire unit is submerged in water to extract groundwater to the surface. They are suitable for various applications including domestic water supply, mine rescue, industrial cooling, farmland irrigation, seawater lifting, and ship ballast adjustment.

[0003] After the pump is started, the impeller rotates at high speed, and the liquid inside rotates along with the flexible blades. Under centrifugal force, the liquid is ejected from the impeller and ejected outwards. The ejected liquid gradually slows down in the diffuser chamber of the pump casing, and the pressure gradually increases. Then it flows out from the pump outlet and the discharge pipe. At this time, a vacuum low-pressure zone with neither air nor liquid is formed at the center of the flexible blades because the liquid is thrown to the surrounding area. Under the action of atmospheric pressure at the surface of the liquid pool, the liquid flows into the pump through the suction pipe. In this way, the liquid is continuously drawn up from the liquid pool and continuously flows out from the discharge pipe.

[0004] When a submersible pump is operating, the large head places immense pressure on the impeller. Current submersible pump impellers have limited pressure-bearing capacity, severely restricting the pump's head. Therefore, there is an urgent need to design a submersible pump impeller assembly for wells to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide an impeller assembly for a submersible pump used in wells, in order to overcome the aforementioned shortcomings in the prior art.

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

[0007] A submersible pump impeller assembly for wells includes a drive shaft and a pump casing. The drive shaft is inserted into the center of the pump casing. Several impeller bodies and diffusers are sleeved on the outside of the drive shaft. The impeller bodies and diffusers are used as a group. The impeller bodies rotate synchronously with the drive shaft. The diffusers are fixed relative to the pump casing. The drive shaft drives the impeller bodies to rotate inside the pump casing.

[0008] The centrifugal force of the rotating impeller body drives the water flow, and the flowing water passes through the diffuser and converges in a straight line along the direction of the drive shaft.

[0009] Preferably, the outer wall of the drive shaft is provided with a plurality of connecting keys, and one end of the drive shaft is provided with a connector.

[0010] Preferably, the connector has an internal hexagonal structure, and the connector is connected to the output shaft of the drive device for transmission.

[0011] Preferably, the inner wall of the pump casing is provided with a plurality of fixed grooves that are equally spaced and distributed in a ring.

[0012] Preferably, the impeller body includes a base plate, an integrally formed energy-concentrating ring is fixedly disposed on the outside of the base plate, the energy-concentrating ring is inserted into the inside of the pump casing, a shaft hole is provided in the middle of the base plate, a plurality of ribs located inside the energy-concentrating ring are provided on one side outer wall of the base plate, an integrally formed centrifugal blade is fixedly disposed on the outer surface of the ribs, a plurality of ribs fixed on the base plate are provided on one side outer wall of the ribs, and a plurality of water grooves penetrating the base plate are provided on the side wall of the base plate.

[0013] Preferably, a keyway is provided on the inner wall of the shaft hole, and the shaft hole is fitted onto the transmission shaft through the keyway.

[0014] Preferably, the diffuser includes a rotating disk sleeved outside the drive shaft, a bulging hole is provided at the center of the rotating disk, a number of tenons are provided on the outer wall of the rotating disk, a number of water grooves penetrating the rotating disk are provided on the side wall of the rotating disk, and a number of diffuser blades distributed in a ring at equal intervals are provided on the outer wall of the rotating disk away from the impeller body.

[0015] In the above technical solution, the submersible pump impeller assembly for wells provided by this utility model has the following beneficial effects:

[0016] (1) The integrated design of the energy-concentrating ring and the base plate is adopted. The base plate, energy-concentrating ring and rib plate can improve the strength of the centrifugal blades and ensure that they will not deform under high-speed water suction, thereby increasing the head of the submersible pump and making it more suitable for use in deep wells.

[0017] (2) The ribs can be used to reinforce the rib plate, which improves the connection strength between the rib plate and the base plate and further enhances the stability of the centrifugal blades.

[0018] (3) By using a diffuser on one side of the impeller body, the water passing through the impeller body can flow along the drive shaft, which facilitates the water sucked in by the first-stage impeller body to enter the second impeller. Then, through multiple stages of impeller bodies and diffusers, the water pressure is continuously increased, which improves the water suction capacity of the submersible pump and ensures that the submersible pump has a higher head. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the submersible pump impeller assembly for wells according to this utility model.

[0021] Figure 2 This is a schematic diagram of the partial impeller body being removed from the drive shaft, as provided in an embodiment of the submersible pump impeller assembly of this utility model.

[0022] Figure 3 This is a schematic diagram of the impeller body and diffuser structure provided for an embodiment of the submersible pump impeller assembly of this utility model.

[0023] Figure 4 This is a front view of the impeller body structure provided for an embodiment of the submersible pump impeller assembly of this utility model.

[0024] Figure 5 The main view of the diffuser structure provided for an embodiment of the submersible pump impeller assembly of this utility model.

[0025] 1. Drive shaft; 11. Connecting key; 12. Connector; 2. Pump casing; 21. Fixing groove; 3. Impeller body; 31. Base plate; 32. Energy-concentrating ring; 33. Shaft hole; 34. Keyway; 35. Rib; 36. Centrifugal blade; 37. Rib; 38. Water tank opening one; 4. Diffuser; 41. Rotating disk; 42. Enlarged hole; 43. Tenon; 44. Water tank opening two; 45. Diffuser blade. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, the submersible pump impeller assembly for wells provided in this embodiment includes a drive shaft 1 and a pump casing 2. The drive shaft 1 is inserted into the center of the pump casing 2. Several impeller bodies 3 and diffusers 4 are sleeved on the outside of the drive shaft 1. The impeller bodies 3 and diffusers 4 are used as a group. The impeller bodies 3 rotate synchronously with the drive shaft 1. The diffusers 4 are fixed relative to the pump casing 2. The drive shaft 1 drives the impeller bodies 3 to rotate inside the pump casing 2. Under the centrifugal force of the rotating impeller bodies 3, water flows. The flowing water passes through the diffusers 4 and flows in a straight line along the direction of the drive shaft 1.

[0028] In this embodiment, a transmission shaft 1 is included;

[0029] Specifically, a number of connecting keys 11 are provided on the outer wall of the transmission shaft 1, and a connector 12 is provided at one end of the transmission shaft 1.

[0030] Specifically, the connector 12 has an internal hexagonal structure and is connected to the output shaft of the drive device, which is a submersible pump drive motor.

[0031] In this embodiment, the pump housing 2 and the drive shaft 1 are inserted into the center of the pump housing 2;

[0032] Specifically, the inner wall of the pump casing 2 is provided with several equally spaced, annularly distributed fixing grooves 21. The tenon 43 of the diffuser 4 is engaged inside the fixing grooves 21, so that the diffuser 4 is relatively fixed to the pump casing 2.

[0033] In this embodiment, a plurality of impeller bodies 3 are sleeved on the outside of the transmission shaft 1;

[0034] Specifically, the impeller body 3 includes a base plate 31. An integrally formed energy-concentrating ring 32 is fixedly disposed on the outside of the base plate 31. The energy-concentrating ring 32 is inserted into the inside of the pump housing 2. A shaft hole 33 is provided in the middle of the base plate 31. Several ribs 35 located inside the energy-concentrating ring 32 are provided on one side of the outer wall of the base plate 31. An integrally formed centrifugal blade 36 is fixedly disposed on the outer surface of the rib 35. Several ribs 37 fixed on the base plate 31 are provided on one side of the outer wall of the rib 35. Several water grooves 38 penetrating the base plate 31 are provided on the side wall of the base plate 31.

[0035] When the drive unit is started, the transmission shaft 1 is rotated, which in turn drives the impeller body 3 to rotate, allowing the centrifugal blades 36 to draw in water, which then passes through the water tank opening 38 over the impeller body 3.

[0036] Specifically, a keyway 34 is provided on the inner wall of the shaft hole 33. The shaft hole 33 is sleeved on the transmission shaft 1 through the keyway 34. The keyway 34 realizes the fixed connection between the base plate 31 and the transmission shaft 1, so that the transmission shaft 1 can drive the impeller body 3 to rotate synchronously.

[0037] In this embodiment, a plurality of diffusers 4 are sleeved on the outside of the transmission shaft 1;

[0038] Specifically, the diffuser 4 includes a rotating disk 41 sleeved outside the drive shaft 1. A bulging hole 42 is provided at the center of the rotating disk 41. The bulging hole 42 does not contact the drive shaft 1. Several tenons 43 are provided on the outer wall of the rotating disk 41. Several water channels 44 penetrating the rotating disk 41 are provided on the side wall of the rotating disk 41. Water passing through the impeller body 3 passes through the water channels 44 and then over the diffuser 4. Several equally spaced diffuser blades 45 are provided on the outer wall of the rotating disk 41 away from the impeller body 3. Under the guiding action of the diffuser blades 45, the water flows in a straight line along the direction of the drive shaft 1, thereby completing the water intake of the impeller body 3 and the diffuser 4 in the first stage.

[0039] In this embodiment, the impeller body 3 and the diffuser 4 are used as a group. The impeller body 3 rotates synchronously with the drive shaft 1, the diffuser 4 is fixed relative to the pump casing 2, and the drive shaft 1 drives the impeller body 3 to rotate inside the pump casing 2.

[0040] In this embodiment, the centrifugal force of the rotating impeller body 3 drives the water flow, and the flowing water passes through the diffuser 4 and flows in a straight line along the direction of the drive shaft 1.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A submersible pump impeller assembly for a well comprising a drive shaft (1) and a pump housing (2), characterized in that The transmission shaft rod (1) is inserted at the center of the pump shell (2), the outer sleeve of the transmission shaft rod (1) is provided with a plurality of impeller bodies (3) and diffusers (4), the impeller bodies (3) and diffusers (4) are used in groups, the impeller bodies (3) rotate synchronously with the transmission shaft rod (1), the diffusers (4) are fixed relative to the pump shell (2), and the transmission shaft rod (1) drives the impeller bodies (3) to rotate in the pump shell (2). The impeller bodies (3) drive water flow under the centrifugal action of rotation, and the flowing water flows linearly along the transmission shaft rod (1) direction through the diffusers (4).

2. A submersible pump impeller assembly for a well as claimed in claim 1, wherein, The outer wall of the transmission shaft rod (1) is provided with a plurality of connecting keys (11), and one end of the transmission shaft rod (1) is provided with a connecting head (12).

3. A submersible pump impeller assembly for a well as claimed in claim 2, wherein, The connecting head (12) is internally hexagonal, and the connecting head (12) is in transmission connection with the output shaft of the driving device.

4. The submersible pump impeller assembly for a well of claim 1, wherein, The inner wall of the pump shell (2) is provided with a plurality of fixed grooves (21) which are equally distributed in a ring shape.

5. The submersible pump impeller assembly for a well of claim 1, wherein, The impeller body (3) comprises a base plate (31), an integral energy ring (32) is fixedly arranged outside the base plate (31), the energy ring (32) is inserted into the inside of the pump shell (2), a shaft hole (33) is arranged in the middle of the base plate (31), a plurality of rib plates (35) are arranged on one side of the outer wall of the base plate (31) and located in the energy ring (32), an integral centrifugal blade (36) is fixedly arranged on the outer surface of the rib plate (35), a plurality of rib strips (37) are arranged on one side of the outer wall of the rib plate (35) and fixed on the base plate (31), and a plurality of water groove openings (38) are arranged on the side wall of the base plate (31) and penetrate the base plate (31).

6. A submersible pump impeller assembly for a well as claimed in claim 5, wherein, The inner wall of the shaft hole (33) is provided with a key groove (34), and the shaft hole (33) is sleeved on the transmission shaft rod (1) through the key groove (34).

7. The submersible pump impeller assembly for a well of claim 1, wherein, The diffuser (4) comprises a rotating disc (41) sleeved on the outside of the transmission shaft rod (1), the center of the rotating disc (41) is provided with an expansion hole (42), a plurality of tenons (43) are arranged on the outer wall of the rotating disc (41), a plurality of water groove openings (44) are arranged on the side wall of the rotating disc (41) and penetrate the rotating disc (41), and a plurality of diffusion blades (45) are arranged on one side of the outer wall of the rotating disc (41) away from the impeller body (3) and are equally distributed in a ring shape.

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