Large-flow self-adaptive sewage pump

Abstract

The utility model belongs to the technical field of water pump application, and particularly discloses a high-flow self-adaptive sewage pump. Comprising a fan blade cover, a motor rear end cover, a machine barrel, a motor front end cover, a pump head, fan blades, a shaft clamp spring, a stator assembly, a first rolling bearing, a rotor assembly, a volute, an impeller, a water retaining ring, a water outlet, a water inlet, a waterproof switch assembly, a switch sealing gasket, a capacitor, a capacitor box lower cover and the like which are assembled in a matched mode. The utility model has the beneficial effects that: before the water pump works, the vortex cavity needs to be filled with water; when the impeller rotates at a high speed, liquid between the blades rotates along with the blades, so that the liquid obtains higher pressure energy, and the lift is improved; the volute and the impeller are respectively made of integrally-formed gray cast iron and have good abrasion resistance, the service life of the volute and the service life of the impeller can be prolonged, and it is guaranteed that the water pump has the long service life under the high load. The working efficiency of the whole machine is improved by using a high-efficiency induction type motor; the hook structure facilitates storage of a power line, and the use convenience of the water pump is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pump applications, and specifically relates to a large-flow adaptive sewage pump for temporary household drainage. Background Technique

[0002] A sewage pump is a pump product in which the pump and the motor are integrated and operate submerged in liquid at the same time. Compared with general horizontal pumps or vertical sewage pumps, the sewage pump has a compact structure, a small floor area, and a long continuous operation time.

[0003] Since the pump and the motor of the sewage pump are coaxial, the shaft is short, and the weight of the rotating parts is light, the load (radial) borne by the bearing is relatively small, and its service life is much longer than that of general pumps. At the same time, there are no problems such as cavitation damage and priming. Especially the latter point brings great convenience to the operator, with small vibration and noise, low motor temperature rise, and no pollution to the environment.

[0004] Currently, the problems existing in traditional sewage pumps are: (1) When pumping water, the sound and vibration of the water pump are very large, and at the same time, the pressure is small and the lift is small; (2) The volute and the impeller have a short service life and are not durable; (3) For the same type of water pumps on the market, when pumping water, the sound and vibration of the water pump are very large, and it will also automatically move its position due to resonance, with poor seismic resistance. When in use, the water pump will automatically move its position due to resonance, making it inconvenient to use.

[0005] Therefore, based on the above problems, the utility model provides a large-flow adaptive sewage pump. Content of the Utility Model

[0006] Purpose of the utility model: The purpose of the utility model is to provide a large-flow adaptive sewage pump to solve the technical problems existing in the use of shallow well pumps in the background technique.

[0007] Technical solution: The large-flow adaptive sewage pump provided by the utility model comprises a blower housing, a motor rear end cover, a barrel, a motor front end cover and a pump head which are assembled in cooperation; a screw, a hexagon head bolt, a blower and a shaft retaining ring which are used in cooperation are assembled in the cavity formed by the blower housing and the motor rear end cover; a stator assembly, a first rolling bearing, a rotor assembly and a second rolling bearing which are used in cooperation are assembled in the cavity formed by the motor rear end cover and the barrel, and one end of the rotor assembly is connected with the blower; one end of the barrel is connected with the motor front end cover; a first O-ring, a volute, an impeller, a water retaining ring, a fourth O-ring, a mechanical seal, a first external angle head bolt and a second external angle head bolt which are used in cooperation are assembled in the cavity formed by the motor front end cover and the pump head, and the impeller is connected with the other end of the rotor assembly; a water inlet gasket, a water outlet, a priming plug, a sealing ring, a water outlet gasket, a water inlet, a fifth O-ring, a drain plug screw and an internal hexagon bolt are arranged on the pump head; a waterproof switch assembly, a switch gasket, a capacitor box upper cover, a capacitor, a first O-ring, a second O-ring, a cable clamp, a cable sheath and a capacitor box lower cover which are used in cooperation are arranged on the outer wall of the upper part of the barrel, and the capacitor is respectively connected with the waterproof switch assembly and the stator assembly; a power cord is arranged on the waterproof switch assembly, and the cable clamp and the cable sheath are respectively used in cooperation with the power cord.

[0008] In this technical solution, the large-flow adaptive sewage pump further comprises a handle assembly, a nut, a foot, a rubber foot pad and a handle plug which are used in cooperation and are arranged on the outer wall of the lower part of the barrel.

[0009] In this technical solution, the volute comprises a circular hollow seat, an open volute body arranged on one side of the circular hollow seat, and a fixed protrusion arranged on the connecting surface of the circular hollow seat and the open volute body.

[0010] In this technical solution, the impeller comprises a circular hollow with a key plate, and arc plates symmetrically arranged on one side of the circular hollow with a key plate, and the arc plates respectively extend obliquely from the edges of the same surface of the circular hollow with a key plate towards the symmetric center line of the circular hollow with a key plate.

[0011] In this technical solution, the handle assembly is arranged in an inclined V-shaped structure, and two groups of rubber foot pads are arranged and are respectively arranged at the four corners of the handle assembly.

[0012] Compared with the prior art, the beneficial effects of the large-flow adaptive sewage pump of the present utility model are as follows: 1. Before the water pump works, the volute chamber must be filled with water; when the impeller rotates at a high speed, the liquid between the blades rotates with the blades, so that the liquid obtains a higher pressure energy and the head is increased; 2. The volute and the impeller are made of integrally formed gray cast iron or alloy stainless steel, which has good wear resistance, can extend the service life of the volute and the impeller, and ensure that the water pump still has a long service life under high load; 3. Use a high-efficiency induction motor to improve the overall working efficiency of the machine; 4. The hook structure is used to facilitate the storage of the power cord and improve the convenience of using the water pump; 5. The water outlet of the water pump is laterally discharged, which can prevent the water outlet pipe from being twisted and bent and affecting the performance of the water pump; 6. The structure of the water pump is optimized, and 4 heavy-duty rubber foot pads are adopted, and the center of gravity of the water pump is reasonably designed, so that the whole machine runs with low noise and completely overcomes the phenomenon that the water pump automatically moves its position. Description of the Drawings

[0013] 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 to be used 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, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is an exploded structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0015] Figure 2 、 Figure 3 It is a front elevation structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0016] Figure 4 It is a front view structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0017] Figure 5 The right view structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0018] Figure 6 It is a left view structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0019] Figure 7 It is a sectional view structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0020] Figure 8 It is a top view structural schematic diagram of the large-flow adaptive sewage pump of the present utility model;

[0021] Figure 9 It is a partial enlarged structural schematic diagram of the impeller of the large-flow adaptive sewage pump of the present utility model;

[0022] Figure 10 It is a partial enlarged structural schematic diagram of the volute of the large-flow adaptive sewage pump of the present utility model.

[0023] Among them, the serial numbers in the figure are as follows: 1 - inlet gasket, 2 - outlet, 3 - priming plug, 4 - sealing ring, 5 - outlet gasket, 6 - first O-ring, 7 - volute, 8 - impeller, 9 - inlet, 10 - waterproof switch assembly, 11 - switch gasket, 12 - upper cover of capacitor box, 13 - capacitor, 14 - first O-ring, 15 - second O-ring, 16 - cable clamp, 17 - cable sheath, 18 - stator assembly, 19 - screw, 20 - hexagon head bolt, 21 - fan blade, 22 - fan blade cover, 23 - shaft circlip, 24 - rear end cover of motor, 25 - first rolling bearing, 26 - rotor assembly, 27 - power cord, 28 - second rolling bearing, 29 - handle assembly, 30 - lower cover of capacitor box, 31 - nut, 32 - foot, 33 - rubber foot pad, 34 - barrel, 35 - handle plug, 36 - front end cover of motor, 37 - water retaining ring, 38 - fourth O-ring, 39 - mechanical seal, 40 - first external angle head bolt, 41 - second external angle head bolt, 42 - pump head, 43 - fifth O-ring, 44 - drain plug screw, 45 - socket head cap screw, 70 - circular hollow seat, 71 - open volute housing, 72 - fixed protrusion, 80 - circular hollow key plate, 81 - arc plate, 291 - power cord hook. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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 making creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "

[0026] The orientation or positional relationship indicated by "bottom end" or the like is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", and "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 invention can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] As Figures 1 to 8 shown, the large-flow adaptive sewage pump includes a blower cover 22, a motor rear end cover 24, a barrel 34, a motor front end cover 36, and a pump head 42 that are assembled in cooperation;

[0029] In the cavity formed by the blower cover 22 and the motor rear end cover 24, screws 19, hexagon head bolts 20, a blower 21, and a shaft retaining ring 23 that are used in cooperation are assembled;

[0030] In the cavity formed by the motor rear end cover 24 and the barrel 34, a stator assembly 18, a first rolling bearing 25, a rotor assembly 26, and a second rolling bearing 28 that are used in cooperation are assembled. One end of the rotor assembly 26 is connected to the blower 21;

[0031] One end of the barrel 34 is connected to the motor front end cover 36;

[0032] In the cavity formed by the motor front end cover 36 and the pump head 42, a first O-ring 6, a volute 7, an impeller 8, a water retaining ring 37, a fourth O-ring 38, a mechanical seal 39, a first external angle head bolt 40, and a second external angle head bolt 41 that are used in cooperation are assembled. The impeller 8 is connected to the other end of the rotor assembly 26;

[0033] On the pump head 42, there are provided an inlet gasket 1, a water outlet 2, a priming plug 3, a sealing ring 4, a water outlet gasket 5, an inlet 9, a fifth O-ring 43, a drain plug screw 44, and an internal hexagonal bolt 45;

[0034] On the outer wall of the upper part of the barrel 34, there are a waterproof switch assembly 10, a switch gasket 11, an upper cover 12 of the capacitor box, a capacitor 13, a first O-ring 14, a second O-ring 15, a cable clamp 16, a cable sheath 17 and a lower cover 30 of the capacitor box which are used in cooperation. The capacitor 13 is respectively connected to the waterproof switch assembly 10 and the stator assembly 18. The

[0035] On the waterproof switch assembly 10, there is a power cord 27. The cable clamp 16 and the cable sheath 17 are respectively used in cooperation with the power cord 27.

[0036] Embodiment 2

[0037] On the basis of Embodiment 1, the large-flow adaptive sewage pump further includes a handle assembly 29, a nut 31, a foot 32, a rubber foot pad 33 and a handle plug 35 which are arranged on the outer wall of the lower part of the barrel 34 and used in cooperation;

[0038] Among them, a power cord hook 291 is arranged on the handle assembly 29, and the foot 32 is fixedly connected to the outer wall of the lower part of the barrel 34.

[0039] Since the electric water pump uses electricity and is often used outdoors, the water pump will be equipped with a relatively long power cord 27. After the water pump is used, the power cord 27 needs to be stored, and it often occurs that the power cord 27 cannot be fixed reasonably and conveniently; by adding two power cord hooks 291 for collecting the power cord 27 at the position of the handle 29, the collection and fixation of the power cord 27 can be conveniently realized.

[0040] In addition, preferably, as Figure 10 shown in the volute 7, it includes a circular hollow seat 70, an open volute body 71 arranged on one side of the circular hollow seat 70, and a fixing protrusion 72 arranged on the connection surface of the circular hollow seat 70 and the open volute body 71;

[0041] Among them, the circular hollow seat 70, the open volute body 71 and the fixing protrusion 72 are made of integrally formed gray cast iron or alloy stainless steel, which has good wear resistance, prolongs the service life, and ensures that the water pump still has a long service life under high load.

[0042] In addition, preferably, as Figure 9 shown in the impeller 8, it includes a circular hollow key plate 80, and arc plates 81 symmetrically arranged on one side of the circular hollow key plate 80. The arc plates 81 respectively extend obliquely from the same-side edge of the circular hollow key plate 80 towards the symmetric center line of the circular hollow key plate 80;

[0043] Among them, the arc plates 81 are located in one side of the volute 7. The circular hollow key plate 80 and the arc plates 81 are made of integrally formed gray cast iron, which has good wear resistance, prolongs the service life, and ensures that the water pump still has a long service life under high load.

[0044] In addition, preferably, the handle assembly 29 is arranged in an inclined V-shaped structure, and two sets of rubber foot pads 33 are arranged at the four corners of the handle assembly 29 respectively. The reasonable design makes the center of gravity of the water pump stable, reduces the running noise of the whole machine, and completely overcomes the phenomenon that the water pump automatically moves its position.

[0045] Structural principle or working principle of the large-flow self-adaptive sewage pump of this structure:

[0046] It is mainly used for temporary household drainage. Before the water pump works, the volute cavity must be filled with water; when the impeller 8 rotates at a high speed, the liquid between the impellers rotates together with the blades, so that the liquid obtains a higher pressure energy and increases the lift.

[0047] At the same time, since there is a certain amount of liquid in the water pump cavity, the water pump has self-priming ability after starting.

[0048] 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 such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0049] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention 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 invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. Large flow adaptive sewage pump, characterized by: It comprises a fan blade cover (22), a motor rear end cover (24), a machine barrel (34), a motor front end cover (36) and a pump head (42) which are assembled in a matching manner; The cavity formed by the fan cover (22) and the rear end cover (24) of the motor is assembled with screws (19), hexagonal bolts (20), fan blades (21) and shaft retaining rings (23) for use in conjunction with each other; A stator assembly (18), a first rolling bearing (25), a rotor assembly (26) and a second rolling bearing (28) are assembled in a cavity formed by the rear end cover (24) of the motor and the machine barrel (34), and one end of the rotor assembly (26) is connected to the fan blade (21); One end of the machine barrel (34) is connected to the front end cover (36) of the motor; The first O-ring (6), volute (7), impeller (8), water retaining ring (37), fourth O-ring (38), mechanical seal (39), first external angle head bolt (40) and second external angle head bolt (41) are assembled in the cavity formed by the front end cover (36) of the motor and the pump head (42), and the impeller (8) is connected to the other end of the rotor assembly (26); The pump head (42) is provided with a water inlet sealing gasket (1), a water outlet (2), a water diversion plug (3), a sealing ring (4), a water outlet sealing gasket (5), a water inlet (9), a fifth O-ring (43), a water outlet plug screw (44) and a hexagon socket bolt (45); The upper outer wall of the barrel (34) is provided with a waterproof switch assembly (10), a switch sealing gasket (11), a capacitor box upper cover (12), a capacitor (13), a first O-ring (14), a second O-ring (15), a cable pressing block (16), a cable sheath (17) and a capacitor box lower cover (30) for use together, and the capacitor (13) is connected to the waterproof switch assembly (10) and the stator assembly (18) respectively; The waterproof switch assembly (10) is provided with a power line (27), and the cable pressing block (16) and the cable sheath (17) are respectively used in conjunction with the power line (27).

2. The large flow adaptive sewage pump according to claim 1 is characterized in that: The large flow adaptive sewage pump also includes a handle assembly (29), a nut (31), a foot (32), a rubber foot pad (33) and a handle plug (35) arranged on the lower outer wall of the machine barrel (34) for use together.

3. The large flow adaptive sewage pump according to claim 1 is characterized in that: The volute casing (7) comprises a circular hollow seat (70), an open volute casing (71) arranged on one side of the circular hollow seat (70), and a fixing protrusion (72) arranged on the connecting surface of the circular hollow seat (70) and the open volute casing (71).

4. The large flow adaptive sewage pump according to claim 1 is characterized in that: The impeller (8) comprises a circular hollow keyed plate (80) and an arc plate (81) symmetrically arranged on one side of the circular hollow keyed plate (80), wherein the arc plates (81) extend obliquely from the edges of the same surface of the circular hollow keyed plate (80) toward the symmetry center line of the circular hollow keyed plate (80).

5. The large flow adaptive sewage pump according to claim 2 is characterized in that: The handle assembly (29) is configured as an oblique V-shaped structure, and two groups of rubber foot pads (33) are provided, and are respectively arranged at the four corners of the handle assembly (29).

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