High-lift chemical shielding immersed pump

Abstract

The utility model relates to the technical field of pump valve equipment, in particular to a high-lift chemical shielding immersed pump which comprises a shell, a liquid inlet is formed in one end of the shell, a liquid outlet is formed in the other end of the shell, and an impeller shaft and a plurality of sets of impellers surrounding the periphery of the impeller shaft are arranged at the end, close to the liquid inlet, in the shell. A driving motor for driving the impeller shaft to rotate is arranged at the end, close to the liquid outlet, in the shell, a liquid inlet channel communicated with the liquid outlet is formed between the outer wall of the driving motor and the inner wall of the shell, and the impeller close to the end of the driving motor is connected with the liquid inlet channel; the multiple sets of impellers are additionally arranged on the impeller shaft, step-by-step pressurization is achieved through the multiple sets of impellers, the high-lift effect is directly achieved, the high-lift impeller can be applied to more occasions, and the high-lift impeller further has the advantage that the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pump and valve equipment, in particular to a high-lift chemical shielded submersible pump. Background Art

[0002] A submersible pump is a device that submerges in liquid and pumps it outward. It consists of an impeller at the bottom, a motor above the impeller that drives it, a cylindrical inner casing that shields the motor, a motor cover at the top of the inner casing that seals the motor within it, a pump head that docks with the motor cover above it, and a cylindrical outer casing that fits over the inner casing. There's a gap between the inner and outer casings, creating a flow space for liquid to flow upward.

[0003] With the development of the chemical industry, in order to meet more usage needs, such as large-scale equipment or large-scale application scenarios, submersible pumps are required to be able to deliver higher lifts. However, the existing technology cannot achieve the effect of high lift directly with one submersible pump. It is necessary to install multiple submersible pumps, such as low-pressure pumps, medium-pressure pumps and high-pressure pumps, to increase the pressure step by step. Installing multiple pump bodies in this way is prone to problems such as cumbersome installation, difficult movement, and difficult repair if damaged, which in turn leads to increased production costs. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a high-lift chemical shielded submersible pump. The present invention adds multiple sets of impellers to the impeller shaft, and realizes step-by-step pressurization through the multiple sets of impellers, thereby directly achieving the effect of high lift. It can be used in more occasions and also has the advantage of reducing production costs.

[0005] The technical solution adopted by the present utility model is as follows: A high-lift chemical shielded submersible pump comprises a shell, a liquid inlet is provided at one end of the shell and a liquid outlet is provided at the other end, an impeller shaft and several groups of impellers surrounding the outer circumference of the impeller shaft are provided at the end of the shell near the liquid inlet, the several groups of impellers are arranged in sequence along the axial direction of the impeller shaft and are linked, a drive motor for driving the impeller shaft to rotate is provided at the end of the shell near the liquid outlet, a liquid inlet channel connected to the liquid outlet is provided between the outer wall of the drive motor and the inner wall of the shell, the impeller near one end of the drive motor is connected to the liquid inlet channel, and the impeller away from the end of the drive motor is connected to the liquid inlet.

[0006] There are ten groups of impellers.

[0007] The drive motor includes a rotor shaft and a rotor silicon steel sheet assembly surrounding the outer circumference of the rotor shaft. End covers are provided at both ends of the rotor silicon steel sheet assembly, and the end covers also surround the outer circumference of the rotor shaft. The rotor silicon steel sheet assembly is covered with a rotor shell.

[0008] The rotor shaft, end cover and rotor housing are all made of stainless steel.

[0009] The rotor shaft and the impeller shaft are coaxially arranged, and a coupling is connected between the rotor shaft and the impeller shaft.

[0010] The shell is provided with a bottom cover for blocking the impeller at one end of the liquid inlet, and the bottom cover is connected to the impeller shaft through a sliding bearing.

[0011] The sliding bearing is a graphite sleeve.

[0012] The beneficial effects of the present invention are as follows: the present invention adds multiple groups of impellers on the impeller shaft, and realizes step-by-step pressurization through the multiple groups of impellers, that is, the liquid entering the liquid inlet flows into the first impeller close to the liquid inlet, and then flows to the next impeller step by step. Each impeller realizes one pressurization, and flows out from the last impeller to the liquid inlet channel. The liquid entering the liquid inlet channel is a high-pressure liquid, which directly achieves the effect of high lift, can be used in more occasions, and also has the advantage of reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0014] Figure 1 This is a structural diagram of a high-lift chemical shielded submersible pump of the utility model;

[0015] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the drive motor in the utility model;

[0017] Figure 4 This is a schematic structural diagram of the bottom cover of the utility model;

[0018] In the figure, 1-housing, 2-liquid inlet, 3-liquid outlet, 4-impeller shaft, 5-impeller, 6-drive motor, 7-liquid inlet channel, 8-rotor shaft, 9-rotor silicon steel sheet assembly, 10-end cover, 11-rotor housing, 12-coupling, 13-bottom cover, 14-sliding bearing. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0021] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0022] like Figures 1 to 4 The figure shows an embodiment of the present invention, a high-lift chemical shielded submersible pump, comprising a shell 1, a liquid inlet 2 being provided at one end of the shell 1 and a liquid outlet 3 being provided at the other end, an impeller shaft 4 and a plurality of groups of impellers 5 surrounding the outer periphery of the impeller shaft 4 are provided at the end of the shell 1 near the liquid inlet 2, the plurality of groups of impellers 5 are arranged in sequence along the axial direction of the impeller shaft 4 and are linked, a drive motor 6 for driving the impeller shaft 4 to rotate is provided at the end of the shell 1 near the liquid outlet 3, a liquid inlet channel 7 connected to the liquid outlet 3 is provided between the outer wall of the drive motor 6 and the inner wall of the shell 1, the impeller 5 near the end of the drive motor 6 is connected to the liquid inlet channel 7, and the impeller 5 away from the end of the drive motor 6 is connected to the liquid inlet 2.

[0023] The beneficial effects of such a setting are as follows: the utility model adds multiple sets of impellers on the impeller shaft, and realizes step-by-step pressurization through multiple sets of impellers, that is, the liquid entering the liquid inlet flows into the first impeller close to the liquid inlet, and then flows to the next impeller step by step. Each impeller realizes one pressurization, and flows out from the last impeller to the liquid inlet channel. The liquid entering the liquid inlet channel is a high-pressure liquid, which directly achieves the effect of high lift, can be used in more occasions, and also has the advantage of reducing production costs.

[0024] It is further provided that the impellers 5 are in ten groups.

[0025] The beneficial effects of this arrangement are as follows: ten sets of impellers are used to perform step-by-step pressurization to achieve high-lift pressure parameter standards.

[0026] It is further configured that the drive motor 6 includes a rotor shaft 8 and a rotor silicon steel sheet assembly 9 surrounding the outer circumference of the rotor shaft 8, end covers 10 are provided at both ends of the rotor silicon steel sheet assembly 9, and the end covers 10 also surround the outer circumference of the rotor shaft 8, and the rotor silicon steel sheet assembly 9 is covered with a rotor housing 11.

[0027] The beneficial effects of this arrangement are as follows: in order to be able to drive multiple sets of impellers to rotate, the size of the drive motor is also matched accordingly. Compared with the existing technical structure, it is more compact but can provide sufficient driving force, keeping the overall size of the submersible pump not too large.

[0028] It is further provided that the rotor shaft 8, the end cover 10 and the rotor housing 11 are all made of stainless steel.

[0029] The beneficial effects of this arrangement are as follows: the stainless steel material enables the rotor silicon steel sheet assembly to shield the medium flowing through the liquid inlet channel, enables the drive motor to be resistant to the corrosion of chemical media, achieves chemical shielding, and helps the submersible pump to be used in the chemical field.

[0030] It is further provided that the rotor shaft 8 and the impeller shaft 4 are coaxially arranged, and a coupling 12 is connected between the rotor shaft 8 and the impeller shaft 4.

[0031] The beneficial effects of this arrangement are as follows: because there are many impeller groups, the impeller shaft and the rotor shaft are both relatively long, and installing a coupling between the two helps to effectively transmit the power.

[0032] It is further provided that the housing 1 is provided with a bottom cover 13 at one end of the liquid inlet 2 for blocking the impeller 5 , and the bottom cover 13 is connected to the impeller shaft 4 via a sliding bearing 14 .

[0033] The beneficial effects of this arrangement are as follows: because the impeller shaft is long, a sliding bearing is installed between the bottom cover and the impeller shaft to reduce friction, making the impeller shaft rotate more smoothly.

[0034] It is further provided that the sliding bearing 14 is a graphite sleeve.

[0035] The beneficial effects of this arrangement are as follows: the sliding bearing adopts a graphite sleeve made of graphite material, which has the advantages of low cost and easy disassembly and assembly.

[0036] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A high-lift chemical shielded submersible pump, characterized by: The invention comprises a shell (1), wherein one end of the shell (1) is provided with a liquid inlet (2) and the other end is provided with a liquid outlet (3), an impeller shaft (4) and a plurality of impellers (5) surrounding the outer periphery of the impeller shaft (4) are provided at one end of the shell (1) near the liquid inlet (2), and the plurality of impellers (5) are arranged in sequence along the axial direction of the impeller shaft (4) and are linked together, and an end of the shell (1) near the liquid outlet (3) is provided with a drive motor (6) for driving the impeller shaft (4) to rotate, and an inlet channel (7) connected to the liquid outlet (3) is provided between the outer wall of the drive motor (6) and the inner wall of the shell (1), the impeller (5) near the end of the drive motor (6) is connected to the inlet channel (7), and the impeller (5) away from the end of the drive motor (6) is connected to the liquid inlet (2).

2. A high-lift chemical shielded submersible pump according to claim 1, characterized in that: There are ten groups of impellers (5).

3. The high-lift chemical shielded submersible pump according to claim 1, characterized in that: The drive motor (6) includes a rotor shaft (8) and a rotor silicon steel sheet assembly (9) surrounding the outer periphery of the rotor shaft (8), end covers (10) are provided at both ends of the rotor silicon steel sheet assembly (9), and the end covers (10) also surround the outer periphery of the rotor shaft (8), and the rotor silicon steel sheet assembly (9) is covered with a rotor housing (11).

4. A high-lift chemical shielded submersible pump according to claim 3, characterized in that: The rotor shaft (8), end cover (10) and rotor housing (11) are all made of stainless steel.

5. The high-lift chemical shielded submersible pump according to claim 3, characterized in that: The rotor shaft (8) and the impeller shaft (4) are coaxially arranged, and a coupling (12) is connected between the rotor shaft (8) and the impeller shaft (4).

6. The high-lift chemical shielded submersible pump according to claim 1, characterized in that: The housing (1) is provided with a bottom cover (13) at one end of the liquid inlet (2) for blocking the impeller (5), and the bottom cover (13) is connected to the impeller shaft (4) via a sliding bearing (14).

7. The high-lift chemical shielded submersible pump according to claim 6, characterized in that: The sliding bearing (14) is a graphite sleeve.

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