Dual-voltage shallow well pump

Abstract

The utility model belongs to the technical field of water pump application, and particularly discloses a double-voltage shallow well pump. Comprising a rear end cover, a machine barrel, a front end cover, a pump head, a stator assembly, a rotor assembly, fan blades, a bearing, a water retaining ring, a flange plate, a mechanical seal, a flow guide disc, a jet flow nozzle, a jet flow pipe, an impeller assembly, a capacitor box, a capacitor, an O-shaped ring, a capacitor sealing gasket, a voltage conversion PCB, a voltage conversion terminal and the like which are assembled in a matched mode. The double-voltage shallow well pump has the advantages that the high-efficiency induction type motor is used, a built-in compact air cooling structure is used, the motor obtains a good cooling effect, and therefore large output power is obtained; the water pump can be used in two different voltage states by switching one mechanical pressure switch assembly; the water pump achieves the optimal fluid structure by optimizing the curve of the impeller assembly and adjusting the structure of the jet nozzle, and the maximum flow of the optimized water pump reaches 13 cubic meters per hour.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pump applications, and specifically relates to a dual-voltage shallow well pump, which is used for a water pump for taking water from a household shallow well or a water pump for using water in a garden. Background Art

[0002] A shallow well pump is a well water pump that extracts water from a relatively shallow water body. Usually, a well pump with a lift below 50m is called a "shallow well pump", and habitually, its auxiliary devices are also collectively called a "shallow well pump".

[0003] A shallow well pump consists of three parts: generally, a power machine is installed in the upper part, which is a vertical motor or an internal combustion engine; in the middle are the outlet pipe and the transmission shaft; and in the lower part is the pump body, which is generally equipped with 2 - 8 centrifugal or mixed-flow impellers. A filter screen is installed at the inlet of the inlet pipe. It has a simple structure, reliable operation, and high working efficiency.

[0004] Currently, the water pumps used for taking water from household shallow wells or using water in gardens usually adopt a single-voltage structural design, that is, the working voltages of the common water pumps on the market are 120V and 230V, and it is impossible to achieve a water pump that is universal for both 120V and 230V on the same water pump, which limits its application range; at the same time, its durability is not good, so there is an urgent need for improvement.

[0005] Therefore, based on the above problems, the utility model provides a dual-voltage shallow well pump. Summary of the Utility Model

[0006] Purpose of the utility model: The purpose of the utility model is to provide a dual-voltage shallow well pump to solve the technical problems existing in the use of the shallow well pump in the background art.

[0007] Technical solution: The dual-voltage shallow well pump provided by the present utility model includes a rear end cover, a barrel, a front end cover, and a pump head that are assembled in cooperation; a stator assembly, a rotor assembly, a first hexagon head bolt, a wind leaf, and a bearing that are used in cooperation are assembled in the cavity formed by the rear end cover and the barrel. The first hexagon head bolt is located in the barrel and is connected to the front end cover at one end. A water retaining ring, a flange, a first O-ring, a mechanical seal, a flow guiding disc, a second O-ring, a jet nozzle, a jet pipe, and an impeller assembly that are used in cooperation are assembled in the cavity formed by the front end cover and the pump head. The front end cover and the pump head are connected by a second hexagon head bolt. A capacitor box, a capacitor, an O-ring, and a capacitor gasket that are used in cooperation are arranged on the outer wall of one end of the barrel. The capacitor is connected to the stator assembly. A second cross recessed pan head screw, a 90° quick connector, a mechanical pressure switch assembly, a voltage conversion PCB, a mechanical pressure switch connector, and a voltage conversion terminal that are used in cooperation are arranged on the connection surface between the rear end cover and the barrel. The voltage conversion PCB is connected to the stator assembly; a direct quick connector is arranged on the pump head, and the direct quick connector and the 90° quick connector are connected by PE pressure connection.

[0008] In this technical solution, the dual-voltage shallow well pump further includes a circuit board cover plate installed on the rear end cover by a first cross recessed pan head screw, and a rear end cover small cover plate and a rubber tail cover arranged on the rear end cover.

[0009] In this technical solution, the dual-voltage shallow well pump further includes a first square head bolt, a second square head bolt, a first dust cover, and a second dust cover arranged on the pump head.

[0010] In this technical solution, the flow guiding disc includes an arc-shaped shell, a hollow boss sleeve arranged on one side of the arc-shaped shell, three arc-shaped plates arranged on the outer wall of the other side of the arc-shaped shell and snap-fitted end to end with each other, threaded hole connection parts respectively arranged on the outer walls of the symmetric center lines of the arc-shaped plates, and a plurality of reinforcing ribs arranged on the connection outer wall between the arc-shaped shell and the hollow boss sleeve; the impeller assembly includes a first circular plate, a second circular plate, a plurality of arc-shaped water guiding plates evenly arranged on the connection surface between the first circular plate and the second circular plate, a first through groove convex block arranged on one side of the symmetric center line of the first circular plate, a second through groove convex block arranged on one side of the symmetric center line of the second circular plate, and a reinforcing plate arranged on one side of the second circular plate and cooperating with the second through groove convex block.

[0011] For the present technical solution, the jet nozzle includes a seat plate with a through groove, a hollow transition sleeve and a polygonal hollow transition plate arranged on both sides of the seat plate with the through groove, a first threaded groove arranged on the outer wall of the hollow transition sleeve, and a trumpet-shaped hollow pipe arranged on one side of the polygonal hollow transition plate; the jet pipe includes a cylindrical hollow shell, a convex platform-shaped hollow connecting part and a hollow transition part respectively arranged on both end faces of the cylindrical hollow shell, a polygonal connecting shell arranged on one side of the convex platform-shaped hollow connecting part, and a second threaded groove arranged on the outer wall of the hollow transition part.

[0012] For the present technical solution, the dual-voltage shallow well pump further includes a base arranged on the outer wall of the other end of the barrel, and arc-shaped rubber shock-absorbing strips arranged on both end faces of the base and abutting against the outer wall of the barrel.

[0013] For the present technical solution, the guide disk impeller assembly is integrally formed from high-strength engineering plastic polyphenylene ether.

[0014] For the present technical solution, the voltage conversion PCB is used for switching between 120V and 230V power supply, and the conversion control is completed through a mechanical pressure switch assembly, a mechanical pressure switch connecting piece and a voltage conversion terminal used in cooperation with the voltage conversion PCB.

[0015] Compared with the prior art, the beneficial effects of the dual-voltage shallow well pump of the present utility model are as follows: 1. An efficient induction motor is used, and a built-in compact air-cooled structure is used to enable the motor to obtain better cooling effect, thereby obtaining a larger output power; 2. Through a flexible and compact structure design, the operation and use of the water pump are convenient, and at the same time, by switching a mechanical pressure switch assembly, the water pump can be used under two different voltage states; 3. By optimizing the curve of the impeller assembly and adjusting the structure of the jet nozzle, the water pump reaches the best fluid structure. After optimization, the maximum flow rate of the water pump reaches 13 cubic meters per hour, while the flow rate of the traditional one is usually less than 10 cubic meters per hour; 4. A certain liquid storage space is designed in the cavity of the impeller assembly of the water pump, so that the pump has self-priming ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is an exploded structural schematic diagram of the dual-voltage shallow well pump of the present utility model;

[0018] Figure 2 is a front view structural schematic diagram of the dual-voltage shallow well pump of the present utility model;

[0019] Figure 3 is the front view structural schematic diagram of the dual-voltage shallow well pump of the present utility model;

[0020] Figure 4 is the sectional view structural schematic diagram of the dual-voltage shallow well pump of the present utility model;

[0021] Figure 5 is the partial enlarged structural schematic diagram of the flow guide disc and impeller assembly of the dual-voltage shallow well pump of the present utility model;

[0022] Figure 6 is the partial enlarged structural schematic diagram of the jet nozzle and jet pipe of the dual-voltage shallow well pump of the present utility model;

[0023] Figure 7 is the wiring method schematic diagram of the voltage of the dual-voltage shallow well pump of the present utility model;

[0024] Among them, the serial numbers in the figure are as follows: 1 - rubber tail cover, 2 - small rear end cover plate, 3 - first cross recessed head screw, 4 - circuit board cover plate, 5 - rear end cover, 6 - capacitor box, 7 - capacitor, 8 - O-ring, 9 - stator assembly, 10 - rotor assembly, 11 - first hexagon head bolt, 12 - fan blade, 13 - bearing, 14 - barrel, 15 - second hexagon head bolt, 16 - front end cover, 17 - water retaining ring, 18 - flange, 19 - first O-ring, 20 - mechanical seal, 21 - flow guide disc, 22 - second O-ring, 23 - first square head bolt, 24 - first dust cover, 25 - second square head bolt, 26 - second dust cover, 27 - pump head, 28 - direct quick connector, 29 - jet nozzle, 30 - jet pipe, 31 - impeller assembly, 32 - arc-shaped rubber shock-absorbing strip, 33 - base, 34 - capacitor gasket, 35 - PE pressure pipe, 36 - second cross recessed head screw, 37 - 90° quick connector, 38 - mechanical pressure switch assembly, 39 - voltage conversion PCB, 40 - mechanical pressure switch connecting piece, 41 - voltage conversion terminal, 210 - arc-shaped housing, 211 - arc-shaped plate, 212 - connecting part with screw hole, 213 - hollow boss sleeve, 314 - reinforcing rib, 310 - first circular plate, 311 - arc-shaped water diversion plate, 312 - first through groove convex block, 313 - second through groove convex block, 314 - reinforcing plate, 315 - second circular plate, 290 - through groove seat plate, 291 - hollow transition sleeve, 292 - first thread groove, 293 - polygonal hollow transition plate, 294 - flared hollow pipe, 300 - cylindrical hollow shell, 301 - boss-shaped hollow connecting part, 302 - polygonal connecting shell, 303 - hollow transition part, 304 - second thread groove. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "

[0027] bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present 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 should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; in addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the dual-voltage shallow well pump includes a rear end cover 5, a barrel 14, a front end cover 16, and a pump head 27 (the pump head has a filling / discharge port and an inlet) that are assembled in cooperation;

[0030] A stator assembly 9, a rotor assembly 10, a first hexagon head bolt 11, a fan blade 12, and a bearing 13 that are used in cooperation are assembled in the cavity formed by the rear end cover 5 and the barrel 14. The first hexagon head bolt 11 is located inside the barrel 14 and is connected to the front end cover 16 at one end.

[0031] In the cavity formed by the front end cover 16 and the pump head 27, there are assembled a water retaining ring 17, a flange 18, a first O-ring 19, a mechanical seal 20, a diversion disc 21, a second O-ring 22, a jet nozzle 29, a jet pipe 30 and an impeller assembly 31 (which are conventional components or devices and will not be elaborated in this application). The front end cover 16 and the pump head 27 are connected by second hexagon head bolts 15.

[0032] On one end outer wall of the barrel 14, there are assembled a capacitor box 6, a capacitor 7, an O-ring 8 and a capacitor gasket 34 (which are all conventional components or devices and will not be elaborated in this application). The capacitor 7 is connected to the stator assembly 9 (which is a conventional component or device and will not be elaborated in this application).

[0033] On the connection surface between the rear end cover 5 and the barrel 14, there are assembled second cross recessed pan head screws 36, 90° quick connectors 37, a mechanical pressure switch assembly 38, a voltage conversion PCB 39, a mechanical pressure switch connector 40 and voltage conversion terminals 41 (which are all conventional components or devices and will not be elaborated in this application). The voltage conversion PCB 39 is connected to the stator assembly 9.

[0034] A direct quick connector 28 is provided on the pump head 27. The direct quick connector 28 and the 90° quick connector 37 are connected by a PE pressure pipe 35.

[0035] Embodiment 2

[0036] Based on Embodiment 1, the dual-voltage shallow well pump further includes a circuit board cover plate 4 installed on the rear end cover 5 by first cross recessed pan head screws 3, and a rear end cover small cover plate 2 and a rubber tail cover 1 provided on the rear end cover 5 to achieve the fixed assembly of the corresponding circuit board cover plate 4 and perform corresponding sealing.

[0037] Embodiment 3

[0038] Based on Embodiment 1 or Embodiment 2, the dual-voltage shallow well pump further includes a first square head bolt 23, a second square head bolt 25, a first dust cover 24 and a second dust cover 26 provided on the pump head 27.

[0039] Among them, the first dust cover 24 is provided on the outer wall of one end face of the pump head 27, and the second dust cover 26 is provided inside the other end face of the pump head 27 to achieve dust prevention and sealing of the pump head 27.

[0040] In addition, preferably, as Figure 5As shown: The flow guiding disc 21 includes an arc-shaped housing 210, a hollow boss sleeve 213 provided on one side of the arc-shaped housing 210, three arc-shaped plates 211 provided on the outer wall of the other side of the arc-shaped housing 210 and clamped end to end with each other, connection parts 212 with screw holes respectively provided on the outer walls of the symmetry center lines of the arc-shaped plates 211, and a plurality of reinforcing ribs 214 provided on the connecting outer walls of the arc-shaped housing 210 and the hollow boss sleeve 213;

[0041] The impeller assembly 31 includes a first circular plate 310, a second circular plate 315, a plurality of arc-shaped water guiding plates 311 evenly provided on the connecting surface of the first circular plate 310 and the second circular plate 315, a first through groove bump 312 provided on one side of the symmetry center line of the first circular plate 310, a second through groove bump 313 provided on one side of the symmetry center line of the second circular plate 315, and a reinforcing plate 314 provided on one side of the second circular plate 315 and used in cooperation with the second through groove bump 313;

[0042] Among them, the first circular plate 310, the plurality of arc-shaped water guiding plates 311, the second circular plate 315, and the first through groove bump 312 are installed in the cavity formed by the three arc-shaped plates 211 on the outer wall of the other side of the arc-shaped housing 210, and water enters the second through groove bump 313 through the gaps between the three arc-shaped plates 211 by the plurality of arc-shaped water guiding plates 311.

[0043] In addition, preferably as Figure 6 As shown: The jet nozzle 29 includes a through groove seat plate 290, a hollow transition sleeve 291 and a polygonal hollow transition plate 293 provided on both sides of the through groove seat plate 290, a first thread groove 292 provided on the outer wall of the hollow transition sleeve 291, and a horn-shaped hollow tube 294 provided on one side of the polygonal hollow transition plate 293;

[0044] The jet pipe 30 includes a cylindrical hollow shell 300, a boss-shaped hollow connection part 301 and a hollow transition part 303 respectively provided on the end faces of both ends of the cylindrical hollow shell 300, a polygonal connection shell 302 provided on one side of the boss-shaped hollow connection part 301, and a second thread groove 304 provided on the outer wall of the hollow transition part 303;

[0045] Among them, one side of the through groove seat plate 290 abuts against one end face of the hollow transition part 303, and the polygonal hollow transition plate 293 and the horn-shaped hollow tube 294 are located inside one end face of the hollow transition part 303.

[0046] In addition, preferably as Figure 1 As shown, the double-voltage shallow well pump further includes a base 33 provided on the outer wall of the other end of the machine barrel 14, and arc-shaped rubber shock-absorbing strips 32 provided on the end faces of both ends of the base 33 and abutting against the outer wall of the machine barrel 14, so as to realize the quick horizontal fixed installation and use of the overall structure.

[0047] In addition, preferably, the flow guiding disc 21 and the impeller assembly 31 are integrally formed of high-strength engineering plastic polyphenylene ether, which are durable and have a long service life.

[0048] In addition, the voltage conversion PCB 39 is used for switching between 120V and 230V power supply. The conversion control is completed through the mechanical pressure switch assembly 38, the mechanical pressure switch connecting piece 40, and the voltage conversion terminal 41 that are used in cooperation with the voltage conversion PCB 39 (such as Figure 7 the two wiring methods shown, which are convenient for switching). The voltage conversion PCB 39, the mechanical pressure switch assembly 38, the mechanical pressure switch connecting piece 40, and the voltage conversion terminal 41 are all conventional components or devices, and will not be elaborated in this application.

[0049] The structural principle or working principle of the dual-voltage shallow well pump of this structure:

[0050] Before the water pump works, the volute cavity must be filled with water; when the impeller assembly rotates at a high speed, the liquid between the blades rotates with the blades, so that the liquid obtains a higher pressure energy. Since there is a certain amount of liquid in the water pump cavity, this type of water pump has self-priming ability after starting. The design structure with dual voltage enables the water pump to have a wider range of use.

[0051] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0052] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. Dual voltage shallow well pump, characterized by: It comprises a rear end cover (5), a machine barrel (14), a front end cover (16) and a pump head (27) which are assembled in a matching manner; A stator assembly (9), a rotor assembly (10), a first hexagonal bolt (11), a fan blade (12) and a bearing (13) are assembled in the cavity formed by the rear end cover (5) and the machine barrel (14). The first hexagonal bolt (11) is located in the machine barrel (14) and one end of the first hexagonal bolt (11) is connected to the front end cover (16). A water retaining ring (17), a flange (18), a first O-ring (19), a mechanical seal (20), a guide plate (21), a second O-ring (22), a jet nozzle (29), a jet pipe (30) and an impeller assembly (31) are assembled in the cavity formed by the front end cover (16) and the pump head (27). The front end cover (16) and the pump head (27) are connected by a second hexagonal bolt (15). The outer wall of one end of the barrel (14) is provided with a capacitor box (6), a capacitor (7), an O-ring (8) and a capacitor sealing gasket (34) for use together, and the capacitor (7) is connected to the stator assembly (9). The connection surfaces of the rear end cover (5) and the machine barrel (14) are provided with a second cross pan head screw (36), a 90° quick connector (37), a mechanical pressure switch assembly (38), a voltage conversion PCB (39), a mechanical pressure switch connector (40) and a voltage conversion terminal (41) for use therewith, and the voltage conversion PCB (39) is connected to the stator assembly (9); The pump head (27) is provided with a direct quick connector (28), and the direct quick connector (28) and the 90° quick connector (37) are connected via a PE pressure pipe (35).

2. The dual voltage shallow well pump according to claim 1, characterized in that: The dual-voltage shallow well pump also includes a circuit board cover plate (4) mounted on the rear end cover (5) via a first cross pan head screw (3), and a rear end cover small cover plate (2) and a rubber tail cover (1) arranged on the rear end cover (5).

3. The dual voltage shallow well pump according to claim 2, characterized in that: The dual-voltage shallow well pump also includes a first square head bolt (23), a second square head bolt (25), a first dust cover (24) and a second dust cover (26) which are arranged on the pump head (27).

4. The dual voltage shallow well pump according to claim 3, characterized in that: The deflector plate (21) comprises an arc-shaped shell (210), a hollow boss sleeve (213) arranged on one side of the arc-shaped shell (210), and three arc-shaped plates (211) arranged on the outer wall of the other side of the arc-shaped shell (210) and mutually locked end to end, and screw hole connecting parts (212) respectively arranged on the outer walls of the symmetrical center lines of the arc-shaped plates (211), and a plurality of reinforcing ribs (214) arranged on the outer walls connecting the arc-shaped shell (210) and the hollow boss sleeve (213); The impeller assembly (31) comprises a first circular plate (310), a second circular plate (315), and a plurality of arc-shaped water guide plates (311) uniformly arranged on the connecting surface of the first circular plate (310) and the second circular plate (315), and a first protrusion with a through groove (312) arranged on one side of the symmetric center line of the first circular plate (310), and a second protrusion with a through groove (313) arranged on one side of the symmetric center line of the second circular plate (315), and a reinforcing plate (314) arranged on one side of the second circular plate (315) and used in conjunction with the second protrusion with a through groove (313).

5. The dual voltage shallow well pump according to claim 1, characterized in that: The jet nozzle (29) comprises a seat plate with a through groove (290), a hollow transition sleeve (291) arranged on both sides of the seat plate with a through groove (290), a polygonal hollow transition plate (293), a first thread groove (292) arranged on the outer wall of the hollow transition sleeve (291), and a trumpet-shaped hollow tube (294) arranged on one side of the polygonal hollow transition plate (293); The jet tube (30) comprises a cylindrical hollow shell (300), a boss-type hollow connection part (301) and a hollow transition part (303) respectively arranged on the end surfaces of both ends of the cylindrical hollow shell (300), a polygonal connection card shell (302) arranged on one side of the boss-type hollow connection part (301), and a second thread groove (304) arranged on the outer wall of the hollow transition part (303).

6. The dual voltage shallow well pump according to any one of claims 1 to 5, characterized in that: The dual-voltage shallow well pump further comprises a base (33) arranged on the outer wall of the other end of the machine barrel (14), and an arc-shaped rubber shock-absorbing strip (32) arranged on the end surfaces at both ends of the base (33) and abutting against the outer wall of the machine barrel (14).

7. The dual voltage shallow well pump according to claim 1, characterized in that: The guide plate (21) and the impeller assembly (31) are respectively made of high-strength engineering plastic polyphenylene ether by integral molding.

8. The dual voltage shallow well pump according to claim 1, characterized in that: The voltage conversion PCB (39) is used for switching between 120V and 230V power supplies, and the conversion control is completed through a mechanical pressure switch assembly (38), a mechanical pressure switch connector (40), and a voltage conversion terminal (41) used in conjunction with the voltage conversion PCB (39).

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