High-lift submersible pump

Abstract

The utility model provides a high-lift submersible pump, and belongs to the technical field of submersible pumps. A motor is arranged in the pump shell, an upper end cover is fixed to the upper end of the motor, a water through annular cavity is formed between the outer wall of the motor and the inner wall of the pump shell, a pump shaft is coaxially fixed to the output end of the bottom of the motor, a plurality of flow guide sets which are communicated up and down are fixed to the pump shaft, and each flow guide set comprises a flow guide cover and an impeller which are coaxial. A bearing frame is arranged between the bottom of the motor and the flow guide set, a first through hole is formed in the circumferential direction of the bearing frame, an inner cavity of the bearing frame is communicated with the top of the flow guide set, a second through hole is formed in the circumferential direction of the outer wall of the upper end cover, and a water outlet top cover covers the top of the upper end cover. A water outlet is formed in the middle of the water outlet top cover, a water suction chamber is screwed to the bottom of the pump shell, a water inlet is formed in the side of the water suction chamber, and the interior of the water suction chamber communicates with the bottom of the flow guide set. The utility model has the advantages of stable operation, small occupied space, high lift and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to submersible pump technical field, especially high lift submersible pump. BACKGROUND

[0002] At present, submersible pump is the important equipment of deep well water lifting, is named due to the whole unit is immersed in water and works.

[0003] The output end in submersible pump on market is often arranged at the lateral wall of pump body, the pump body usually adopts multilayer structure or larger impeller to the impeller part in pump body to improve the lift, but still cannot change the form of lateral wall through pipeline water outlet, the lateral wall of pump body is unevenly stressed, thereby leading to the submersible pump cannot keep stable, thereby affecting the lift. SUMMARY

[0004] The utility model discloses a kind of high lift submersible pumps, when it is whole more stable, water lift is high.

[0005] The utility model discloses a kind of high lift submersible pumps, when it is whole more stable, water lift is high.

[0006] A kind of high lift submersible pump, including upper and lower communicating pump shell, pump shell is provided with longitudinally arranged motor, the upper end of motor is fixed with the upper end cover of outer wall and the inner wall of the pump shell is abutted, the outer wall between motor and the inner wall of pump shell is formed with water ring cavity, the output end of motor bottom is coaxially fixed with pump shaft, pump shaft is fixed with several upper and lower communicating flow guide groups, flow guide group includes coaxial flow guide cover and impeller, and the outer wall between adjacent flow guide cover is sealed and abuts, bearing bracket is arranged between the bottom of motor and flow guide group, the outer wall of bearing bracket is circumferentially provided with several first through holes communicated with the water ring cavity, and the inner chamber of bearing bracket is communicated with the top of flow guide group, the outer wall of upper end cover is circumferentially provided with several second through holes communicated with water ring cavity, the top of upper end cover is covered with water outlet top cover, the middle part of water outlet top cover is provided with water outlet hole communicated with second through hole, the bottom of pump shell is screwed with water suction chamber, and the inner wall of water suction chamber is abutted with the outer wall of flow guide group, the lateral wall of water suction chamber is provided with several water inlet holes, and the bottom of water suction chamber is communicated with flow guide group.

[0007] The utility model further is provided, the end of pump shaft is fixed on the output end of motor in the mode of screwing, and pump shaft is the shaft body of the cross section of regular hexagon, the middle part of impeller is provided with impeller hole that is adapted with pump shaft and is regular hexagonal, the upper end of impeller is formed with mounting boss, the middle part of the lower end of flow guide cover is provided with mounting groove that is adapted with mounting boss, and the bottom of flow guide cover is covered with bottom cover plate, and the impeller is located between bottom cover plate and flow guide cover.

[0008] The utility model further sets up, the lower hole of impeller hole extends along downward and abuts with the sealing washer of setting on the pump shaft, and the bottom of sealing washer and the top of adjacent flow guide cover abut.

[0009] The utility model further sets up, the pump shaft sets up the damping spring, and the top of damping spring and the bottom of bearing frame abut, and its bottom and the flow guide cover of upper portion abut.

[0010] The utility model further sets up, the number of flow guide group is three groups.

[0011] The utility model further sets up, the lateral wall of water absorption chamber forms the screen of longitudinal and transverse interlacing, and the water inlet hole is the mesh of screen.

[0012] The utility model further sets up, the pump shell is metal material.

[0013] The utility model compared with prior art prominent and beneficial technical effect is:

[0014] 1, the utility model provides a submersible pump, utilizes multiple flow guide groups, realizes the output of larger water volume, transports water through the water passage ring cavity simultaneously, and the water passage ring cavity arranged in the circumference can balance the water pressure at the water outlet, makes the shaft position more balanced when the submersible pump discharges water, and occupies less space as a whole, and increases the lift.

[0015] 2, the utility model further adopts the pump shaft of dismounting type, provides the convenience for fixed installation impeller, and the installation groove and installation boss of adaptation can provide the installation guide between the fixed impeller and flow guide cover in each flow guide group. DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the cross section schematic diagram of the utility model;

[0018] Figure 3 It is the explosion schematic diagram of the utility model;

[0019] Figure 4 It is the explosion schematic diagram of the pump shaft and single flow guide group of the utility model Figure 1 ;

[0020] Figure 5 It is the explosion schematic diagram of the pump shaft and single flow guide group of the utility model Figure 2 ;

[0021] Figure 6 It is the structural schematic diagram of the upper end cover and bearing frame of the utility model;

[0022] REFERENCE NUMERALS:

[0023] 1-pump housing;

[0024] 2-motor; 20-water ring cavity;

[0025] 3-upper end cover; 30-second through hole;

[0026] 4-pump shaft; 40-damping spring;

[0027] 5-flow guide group; 50-duct; 500-mounting groove; 51-impeller; 510-impeller hole; 511-mounting boss; 52-bottom cover plate; 53-sealing pad;

[0028] 6-bearing frame; 60-first through hole;

[0029] 7-water outlet top cover; 70-water outlet hole;

[0030] 8-water suction chamber; 80-water inlet hole; DETAILED DESCRIPTION

[0031] The utility model will be further described below with specific examples in combination with the drawings, referring to Figure 1 — Figure 6 :

[0032] A high-lift submersible pump, comprising a pump housing 1 which is communicated between upper and lower, a motor 2 which is longitudinally arranged in the pump housing 1, an upper end cover 3 which is fixed to the upper end of the motor 2 and whose outer wall is abutted against the inner wall of the pump housing 1, a water ring cavity 20 which is formed between the outer wall of the motor 2 and the inner wall of the pump housing 1, a pump shaft 4 which is coaxially fixed to the output end of the bottom of the motor 2, a plurality of flow guide groups 5 which are fixed to the pump shaft 4 and communicated between upper and lower, the flow guide group 5 comprising a coaxial duct 50 and an impeller 51, and the outer walls of adjacent ducts 50 are in sealing abutment, a bearing frame 6 which is arranged between the bottom of the motor 2 and the flow guide group 5, a plurality of first through holes 60 which are circumferentially arranged on the outer wall of the bearing frame 6 and communicated with the water ring cavity 20, and the inner cavity of the bearing frame 6 is communicated with the top of the flow guide group 5, a plurality of second through holes 30 which are circumferentially arranged on the outer wall of the upper end cover 3 and communicated with the water ring cavity 20, a water outlet top cover 7 which is arranged on the top of the upper end cover 3, a water outlet hole 70 which is arranged in the middle of the water outlet top cover 7 and communicated with the second through hole 30, a water suction chamber 8 which is screwed to the bottom of the pump housing 1 and whose inner wall is abutted against the outer wall of the flow guide group 5, a plurality of water inlet holes 80 which are arranged on the side wall of the water suction chamber 8 and communicated with the bottom of the flow guide group 5.

[0033] During implementation, motor 2 continuously drives pump shaft 4 connected to the output end, causing the guide assembly 5 to rotate and continuously draw water from the suction chamber 8. The water drawn from the guide assembly enters the water circulation ring cavity 20 through the first through hole 60 on the side wall of the bearing bracket. The water in the water circulation ring cavity 20 flows upward into the second through hole 30 and is ejected from the outlet hole 70 of the outlet cover. Due to the function of the water circulation ring cavity 20, the submersible pump is more stable when discharging water, and will not vibrate due to side water discharge, thereby further increasing the head. At the same time, the submersible pump occupies less space, which is beneficial for use in relatively confined spaces.

[0034] Preferably, the end of the pump shaft 4 is fixed to the output end of the motor 2 by screw connection, and the pump shaft 4 is a shaft with a regular hexagonal cross section. The impeller 51 has an impeller hole 510 in the middle that is adapted to the pump shaft 4 and is in the shape of a regular hexagon. The upper end of the middle part of the impeller 51 is formed with a mounting boss 511. The middle part of the lower end of the flow guide shroud 50 is provided with a mounting groove 500 that is adapted to the mounting boss 511. The bottom of the flow guide shroud 50 is covered with a bottom cover plate 52, and the impeller 51 is located between the bottom cover plate 52 and the flow guide shroud 50.

[0035] During installation, the top of the pump shaft is threaded to the output end of the motor by bolts. The pump shaft has a hexagonal cross-section, which allows the guide assembly to rotate fully without the use of key pins.

[0036] In the above structure, the flow guide assembly includes, from top to bottom, a flow guide shroud, an impeller, and a bottom cover plate. The flow guide shroud 50 is cap-shaped with a small opening. The impeller is fully embedded inside the flow guide shroud and abuts against it through matching mounting grooves and mounting bosses. The bottom cover plate seals the water channel, allowing water to enter only through the central hole of the bottom cover plate, thus ensuring sufficient contact between the water flow and the impeller, achieving a pressurization effect. Furthermore, the upper and lower ends of the flow guide shrouds of adjacent flow guide assemblies are mutually sealed, allowing water to pass only through the flow guide assembly, thereby achieving a pressurization effect.

[0037] Preferably, the lower hole of the impeller hole 510 extends downward and abuts against a sealing gasket 53 fitted on the pump shaft 4, and the bottom of the sealing gasket 53 abuts against the top of the adjacent guide shroud 50.

[0038] Preferably, a shock-absorbing spring 40 is fitted onto the pump shaft 4, with the top of the shock-absorbing spring 40 abutting against the bottom of the bearing bracket 6 and its bottom abutting against the upper guide shield 50. This reduces the vibration generated by the rotating guide assembly.

[0039] Preferably, the number of the flow guiding groups 5 is three.

[0040] Preferably, the sidewall of the water absorption chamber 8 forms a crisscrossing mesh, and the water inlet 80 is the mesh opening of the mesh.

[0041] Preferably, the pump housing 1 is made of metal.

[0042] It is worth mentioning that the pump casing 1, made of metal, has good stability under high pressure, ensuring that the submersible pump as a whole will not be damaged.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A high-lift submersible pump, characterized in that, The system includes a pump casing (1) with vertically connected sections. A motor (2) is installed inside the pump casing (1) and is mounted vertically. An upper end cover (3) is fixed to the upper end of the motor (2) with its outer wall abutting against the inner wall of the pump casing (1). A water-passing annular cavity (20) is formed between the outer wall of the motor (2) and the inner wall of the pump casing (1). A pump shaft (4) is coaxially fixed to the output end at the bottom of the motor (2). Several vertically connected guide groups (5) are fixed on the pump shaft (4). Each guide group (5) includes a coaxial guide shield (50) and an impeller (51). The outer walls of adjacent guide shields (50) are sealed together. A bearing bracket (6) is provided between the bottom of the motor (2) and the guide group (5). The outer wall of the bearing bracket (6) is circumferentially decorated with... The upper end cover (3) has several first through holes (60) communicating with the water-passing ring cavity (20), and the inner cavity of the bearing bracket (6) is connected to the top of the guide group (5). The outer wall of the upper end cover (3) is provided with several second through holes (30) communicating with the water-passing ring cavity (20). The top of the upper end cover (3) is covered with a water outlet cover (7). The middle part of the water outlet cover (7) is provided with a water outlet hole (70) communicating with the second through holes (30). The bottom of the pump casing (1) is screwed with a water suction chamber (8), and the inner wall of the water suction chamber (8) abuts against the outer wall of the guide group (5). The side wall of the water suction chamber (8) is provided with several water inlet holes (80), and the inside of the water suction chamber (8) is connected to the bottom of the guide group (5).

2. The high-lift submersible pump according to claim 1, characterized in that, The pump shaft (4) is fixed to the output end of the motor (2) by screw connection. The pump shaft (4) is a shaft with a regular hexagonal cross section. The impeller (51) has an impeller hole (510) in the middle that is compatible with the pump shaft (4) and is in the shape of a regular hexagon. The upper part of the middle of the impeller (51) is formed with a mounting boss (511). The middle part of the lower end of the flow guide (50) is provided with a mounting groove (500) that is compatible with the mounting boss (511). The bottom of the flow guide (50) is covered with a bottom cover plate (52). The impeller (51) is located between the bottom cover plate (52) and the flow guide (50).

3. A high-lift submersible pump according to claim 2, characterized in that, The lower hole of the impeller hole (510) extends downward and abuts against a sealing gasket (53) fitted on the pump shaft (4), and the bottom of the sealing gasket (53) abuts against the top of the adjacent guide shield (50).

4. A high-lift submersible pump according to claim 2, characterized in that, A shock-absorbing spring (40) is fitted on the pump shaft (4), and the top of the shock-absorbing spring (40) abuts against the bottom of the bearing bracket (6), and its bottom abuts against the upper guide shield (50).

5. A high-lift submersible pump according to claim 1, characterized in that, The number of the flow guiding groups (5) is three.

6. A high-lift submersible pump according to claim 1, characterized in that, The sidewall of the water absorption chamber (8) forms a crisscrossing mesh, and the water inlet (80) is the mesh opening of the mesh.

7. A high-lift submersible pump according to claim 1, characterized in that, The pump casing (1) is made of metal.

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