Water-saving variable-frequency normal-temperature water pump

Abstract

The utility model relates to the technical field of water pumps, and discloses a water-saving variable-frequency normal-temperature water pump. The water-saving variable-frequency normal-temperature water pump comprises a support, a shell is fixedly installed in the support, an electromagnetic stator is fixedly installed in the shell, a sealing cover is fixedly installed on the front side of the shell, a limiting bearing is fixedly installed in the center of the sealing cover, and a transmission shaft is installed in the center of the limiting bearing in a penetrating and inserting mode; a permanent magnet rotor is fixedly installed on the front side of the transmission shaft, a sealing ring is fixedly installed on the rear side of the shell, opening structures matched with the connecting bolts are arranged on the surfaces of the sealing ring and the sealing plate, and the sealing plate and the sealing ring are installed between the volute and the shell through the connecting bolts. The sealing rings on the two sides of the sealing plate can be pressed to deform to fill the annular groove of the sealing plate, and the oil seal is located in the center of the sealing plate and can prevent water from overflowing from a gap between the transmission shaft and the sealing plate, so that the sealing performance of the water pump is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, concretely is a water -saving variable frequency normal temperature water pump. BACKGROUND

[0002] Water pump is the mechanical of conveying liquid or making liquid pressure increase. It transmits the mechanical energy of prime mover or other external energy to liquid, makes liquid energy increase, and is mainly used to convey liquid including water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal etc.

[0003] The existing can refer to the announcement number for: CN214118482U's Chinese practical new type patent, it discloses a water -saving water pump, belongs to water pump technical field, including pump machine subassembly and water -saving subassembly, water -saving subassembly connects and installs in pump machine subassembly, impeller shell connects and installs in pump body one side, suction port is through the setting in the outside of impeller shell, the discharge port is set up in the top of impeller shell, sealing cavity is set up respectively in the inside of suction port and discharge port, suction pipe is embedded in connection in the suction port, screen mesh is set up and connects in the bottom of suction pipe. The device in this paper, through the setting main valve, auxiliary valve and auxiliary water supply pipe, auxiliary valve opening can control the irrigation of overall area, main valve opening is connected main water supply pipe and directly water supply, and the auxiliary water supply pipe is provided with a plurality of groups of symmetry on both sides of the extension pipe, so that the auxiliary water supply pipe can be connected with the pipeline on the outside to supply water in multiple areas, so that the limited irrigation water can meet the requirements of crop planting, and is suitable for the production and use of water -saving water pump.

[0004] The existing water pump is generally of split structure for facilitating the installation of impeller, and is sealed by sealing gasket. In use, water may overflow from the gap due to the influence of water pressure in the shell, resulting in waste of water resources. Meanwhile, the power of the existing water pump is constant. In the use condition of needing to control the water delivery amount, the flow valve needs to be matched to limit the water delivery amount. The motor always maintains a certain power, which is far beyond the power requirement of water delivery amount, causing energy waste. UTILITY MODEL CONTENTS

[0005] (I) technical problem solved

[0006] In view of the defects of the prior art, the utility model provides a water -saving variable frequency normal temperature water pump, which has the advantages of improving the sealing property of the shell and adjusting the power, and solves the above technical problems.

[0007] (II) technical scheme

[0008] To achieve the above objectives, this utility model provides the following technical solution: a water-saving variable frequency ambient temperature water pump, comprising: a bracket, an outer shell fixedly installed inside the bracket, an electromagnetic stator fixedly installed inside the outer shell, a cover fixedly installed on the front side of the outer shell, a limit bearing fixedly installed at the center of the cover, a drive shaft inserted through the center of the limit bearing, a permanent magnet rotor fixedly installed on the front side of the drive shaft, a sealing ring fixedly installed on the rear side of the outer shell, a sealing plate fixedly installed on the rear side of the sealing ring, an oil seal fixedly installed at the center of the sealing plate, a volute fixedly installed on the rear side of the sealing plate, and an impeller fixedly installed at the rear end of the drive shaft; the bracket can support the outer shell.

[0009] As a preferred embodiment of this utility model, the outer shell is fixedly installed inside the bracket by interlocking, the outer side of the electromagnetic stator is fixedly connected to the inner wall of the outer shell, and the center of the electromagnetic stator coincides with the center of the outer shell; the outer shell can restrict the position of the electromagnetic stator.

[0010] As a preferred embodiment of this utility model, the cover is fixedly connected to the outer shell by connecting bolts, and the limiting bearing is installed at the center of the cover and the rear center of the outer shell; the cover can protect the electromagnetic stator.

[0011] As a preferred embodiment of this utility model, the drive shaft is rotatably connected to the housing and the cover via a limiting bearing, the permanent magnet rotor is fixedly connected to the drive shaft, and the permanent magnet rotor and the electromagnetic stator are concentric circle structures; the permanent magnet rotor can drive the drive shaft to rotate.

[0012] As a preferred embodiment of this utility model, the sealing ring is symmetrically installed on the front and rear sides of the sealing plate, and the surfaces of the sealing ring and the sealing plate are provided with opening structures that match the connecting bolts; the sealing ring and the sealing plate can achieve a sealing effect.

[0013] As a preferred embodiment of this utility model, the sealing plate and sealing ring are installed between the volute and the outer shell by connecting bolts. The front and rear sides of the sealing plate are provided with annular grooves. The oil seal is located at the center of the sealing plate. The drive shaft is rotatably connected to the sealing plate through the oil seal. The drive shaft can drive the impeller to rotate.

[0014] As a preferred embodiment of this utility model, the drive shaft passes through the sealing plate and its end is located at the center of the volute. The impeller is located at the center of the volute. A water inlet is provided on the rear side of the volute, and an opening structure matching the impeller is provided on the front side of the volute. The volute is fixedly connected to the outer shell by connecting bolts. The impeller can drive the liquid to rotate.

[0015] Compared with the prior art, this utility model provides a water-saving variable frequency ambient temperature water pump, which has the following beneficial effects:

[0016] 1. This utility model features a sealing plate with annular grooves on both the front and rear sides. A sealing ring is symmetrically installed on both sides of the sealing plate. The surfaces of the sealing ring and the sealing plate have openings that match the connecting bolts. The sealing plate and sealing ring are installed between the volute and the outer shell using connecting bolts. When the connecting bolts are tightened, the sealing rings on both sides of the sealing plate will be compressed and deformed, filling the annular grooves of the sealing plate. The oil seal is located in the center of the sealing plate. The oil seal prevents water from leaking out from the gap between the drive shaft and the sealing plate, thereby improving the water pump's sealing performance.

[0017] 2. This utility model utilizes a permanent magnet rotor, which is inserted and installed at the front end of the drive shaft. The drive shaft is rotatably connected to the housing and cover via a limiting bearing. An impeller is fixedly installed at the rear end of the drive shaft. The permanent magnet rotor and the electromagnetic stator are concentrically arranged. The outer side of the electromagnetic stator is fixedly connected to the inner wall of the housing. The position of the housing is restricted by a bracket. When the electromagnetic stator is energized, it will generate a polarity opposite to that of the permanent magnet rotor, thereby driving the permanent magnet rotor to rotate the drive shaft. This, in turn, causes the impeller fixed at the end of the drive shaft to rotate. The magnitude of the electromagnetic force generated by the electromagnetic stator is limited by the current intensity of the electromagnetic stator, thereby controlling the speed of the drive shaft to adapt to different working conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the electromagnetic stator mounting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the drive shaft mounting structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the impeller mounting structure of this utility model;

[0022] The components are: 1. bracket; 11. outer shell; 12. electromagnetic stator; 13. cover; 14. limit bearing; 15. connecting bolt; 16. drive shaft; 17. permanent magnet rotor; 18. sealing ring; 19. sealing plate; 110. oil seal; 111. volute; 112. impeller. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4 In this embodiment, a water-saving variable frequency ambient temperature water pump includes: a bracket 1, a housing 11 fixedly installed inside the bracket 1, an electromagnetic stator 12 fixedly installed inside the housing 11, a cover 13 fixedly installed on the front side of the housing 11, a limit bearing 14 fixedly installed at the center of the cover 13, a drive shaft 16 inserted through the center of the limit bearing 14, a permanent magnet rotor 17 fixedly installed on the front side of the drive shaft 16, a sealing ring 18 fixedly installed on the rear side of the housing 11, a sealing plate 19 fixedly installed on the rear side of the sealing ring 18, an oil seal 110 fixedly installed at the center of the sealing plate 19, a volute 111 fixedly installed on the rear side of the sealing plate 19, and an impeller 112 fixedly installed at the rear end of the drive shaft 16.

[0027] The outer casing 11 is fixedly installed inside the bracket 1 by interlocking. The outer side of the electromagnetic stator 12 is fixedly connected to the inner wall of the outer casing 11, and the center of the electromagnetic stator 12 coincides with the center of the outer casing 11.

[0028] The cover 13 is fixedly connected to the outer shell 11 by connecting bolts 15, and the limit bearing 14 is installed at the center of the cover 13 and the rear center of the outer shell 11.

[0029] The drive shaft 16 is rotatably connected to the housing 11 and the cover 13 via the limit bearing 14. The permanent magnet rotor 17 is fixedly connected to the drive shaft 16. The permanent magnet rotor 17 and the electromagnetic stator 12 are in a concentric circle structure.

[0030] The sealing rings 18 are symmetrically installed on the front and rear sides of the sealing plate 19. The surfaces of the sealing rings 18 and the sealing plate 19 are provided with openings that match the connecting bolts 15.

[0031] The sealing plate 19 and the sealing ring 18 are installed between the volute 111 and the outer shell 11 by connecting bolts 15. The front and rear sides of the sealing plate 19 are provided with annular grooves. The oil seal 110 is located at the center of the sealing plate 19. The drive shaft 16 is rotatably connected to the sealing plate 19 through the oil seal 110.

[0032] The drive shaft 16 passes through the sealing plate 19 and its end is located at the center of the volute 111. The impeller 112 is located at the center of the volute 111. A water inlet is provided on the rear side of the volute 111. An opening structure matching the impeller 112 is provided on the front side of the volute 111. The volute 111 is fixedly connected to the outer shell 11 by connecting bolts 15.

[0033] Specifically, the bracket 1 supports the outer casing 11, the outer casing 11 restricts the position of the electromagnetic stator 12, the electromagnetic stator 12 drives the permanent magnet rotor 17 to rotate, the cover 13 protects the electromagnetic stator 12, the limit bearing 14 facilitates the rotation of the drive shaft 16, the connecting bolt 15 facilitates the connection between the outer casing 11 and the volute 111, the drive shaft 16 drives the impeller 112 to rotate, the permanent magnet rotor 17 drives the drive shaft 16 to rotate, the sealing ring 18 and the sealing plate 19 provide a sealing effect, the oil seal 110 prevents water from overflowing from the gap between the drive shaft 16 and the sealing plate 19, the volute 111 facilitates the discharge of liquid from the top of the volute 111 driven by the impeller 112, and the impeller 112 drives the liquid to rotate.

[0034] In use, the sealing plate 19 has annular grooves on both its front and rear sides, and the sealing rings 18 are symmetrically installed on both sides of the sealing plate 19. The surfaces of the sealing rings 18 and the sealing plate 19 have openings that match the connecting bolts 15. The sealing plate 19 and the sealing rings 18 are installed between the volute 111 and the outer shell 11 by the connecting bolts 15. When the connecting bolts 15 are tightened, the sealing rings 18 on both sides of the sealing plate 19 will be compressed and deformed, filling the annular grooves of the sealing plate 19. The oil seal 110 is located in the center of the sealing plate 19. The oil seal 110 can prevent water from overflowing from the gap between the drive shaft 16 and the sealing plate 19, thereby improving the water pump's sealing performance. The permanent magnet rotor 17 is inserted and installed at the front end of the drive shaft 16. The drive shaft 16 is rotatably connected to the housing 11 and the cover 13 via the limit bearing 14. An impeller 112 is fixedly installed at the rear end of the drive shaft 16. The permanent magnet rotor 17 and the electromagnetic stator 12 are concentric. The outer side of the electromagnetic stator 12 is fixedly connected to the inner wall of the housing 11. The position of the housing 11 is restricted by the bracket 1. When the electromagnetic stator 12 is energized, it will generate a polarity opposite to that of the permanent magnet rotor 17, thereby driving the permanent magnet rotor 17 to drive the drive shaft 16 to rotate, thereby causing the impeller 112 fixed at the end of the drive shaft 16 to rotate. The magnitude of the electromagnetic force generated by the electromagnetic stator 12 is limited by the current intensity of the electromagnetic stator 12, thereby controlling the speed of the drive shaft 16 to adapt to different working conditions.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water saving variable frequency normal temperature water pump, characterized in that, The utility model relates to a water saving type variable frequency normal temperature water pump, including: Support (1), the inside fixed mounting of support (1) is installed shell (11), the inside fixed mounting of shell (11) is installed electromagnetic stator (12), the front side fixed mounting of shell (11) is installed cover (13), the center fixed mounting of cover (13) is installed limit bearing (14), the center of limit bearing (14) is installed transmission shaft (16) and passes through the insertion, the front side fixed mounting of transmission shaft (16) is installed permanent magnet rotor (17), the rear side fixed mounting of shell (11) is installed sealing ring (18), the rear side fixed mounting of sealing ring (18) is installed sealing plate (19), the center fixed mounting of sealing plate (19) is installed oil seal (110), the rear side fixed mounting of sealing plate (19) is installed volute (111), the rear end fixed mounting of transmission shaft (16) is installed impeller (112).

2. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The shell (11) is fixedly installed in the inside of the support (1) by the way of insertion, the outer side surface of the electromagnetic stator (12) is fixedly connected with the inner wall of the shell (11), and the center of the electromagnetic stator (12) is coincident with the center of the shell (11).

3. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The cover (13) is fixedly connected with the shell (11) by the connecting bolt (15), the limit bearing (14) is installed in the center of the cover (13) and the center of the rear side of the shell (11).

4. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The transmission shaft (16) is rotatably connected between the shell (11) and the cover (13) through the limit bearing (14), the permanent magnet rotor (17) is fixedly connected with the transmission shaft (16), and the permanent magnet rotor (17) and the electromagnetic stator (12) are concentric.

5. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The sealing ring (18) is symmetrically installed on the front and rear sides of the sealing plate (19), and the sealing ring (18) and the sealing plate (19) are provided with opening structures matched with the connecting bolt (15).

6. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The sealing plate (19) and the sealing ring (18) are installed between the volute (111) and the shell (11) by the connecting bolt (15), the front and rear sides of the sealing plate (19) are provided with annular grooves, the oil seal (110) is located in the center of the sealing plate (19), and the transmission shaft (16) is rotatably connected between the oil seal (110) and the sealing plate (19).

7. The water saving type variable frequency normal temperature water pump according to claim 1, wherein: The transmission shaft (16) penetrates the sealing plate (19), the end is located in the center of the volute (111), the impeller (112) is located in the center of the volute (111), the rear side of the volute (111) is provided with a water inlet, the front side of the volute (111) is provided with an opening structure matched with the impeller (112), and the volute (111) is fixedly connected with the shell (11) through the connecting bolt (15).

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