CN214465089U

CN214465089U - Double-impeller structure of water pump and large-lift water pump

Info

Publication number: CN214465089U
Application number: CN202120635602.XU
Authority: CN
Inventors: 孟赛娜
Original assignee: Qingdao Pumid Electromechanical Equipment Co ltd
Current assignee: Qingdao Pumid Electromechanical Equipment Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-10-22
Anticipated expiration: 2031-03-29

Abstract

The utility model relates to the technical field of water pumps, in particular to a double-impeller structure of a water pump and a large-lift water pump, wherein the double-impeller structure comprises an impeller disc, a main blade and an auxiliary blade which are integrally formed, and the main blade and the auxiliary blade have the same rotating direction and are respectively arranged at two sides of the impeller disc; the large-lift water pump comprises the double-impeller structure, the double-impeller structure is fixedly connected to the pump shaft, the pump shaft is connected with the end cover, the shell and the water inlet bin, the double-impeller structure is arranged in a cavity formed by the end cover and the shell, and the shell is provided with the water outlet. The utility model has the advantages that the auxiliary blades with the same rotation direction are arranged on the back of the main blade, so that the liquid hit on the end cover of the water pump is secondarily acted and thrown, the pressure of water flow on the end cover is reduced, the leakage at the sealing part of the end cover is effectively avoided, the water pump lift is greatly increased, and the cost is saved; set up baffle and cutter in the storehouse department of intaking, can block impurity with the breakage, prevent to cause the harm to the blade to can reduce the impurity in the output water stream.

Description

Double-impeller structure of water pump and large-lift water pump

Technical Field

The utility model belongs to the technical field of the water pump technique and specifically relates to a bilobed wheel structure and large-lift water pump of water pump.

Background

In the current large-lift water pump structure, need the impeller to exert great pressure to the rivers in the pump to realize the needs of large-lift, nevertheless when the high-pressure rivers behind the impeller hit and hit the end cover position, rivers can make the end cover junction change the emergence and leak to the pressure of end cover, and simultaneously, rivers hit after the blade and hit on the end cover, can cause a large amount of energy waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, a bilobed wheel structure and big lift water pump of water pump is provided, the technical scheme of its adoption as follows:

a double-impeller structure of a water pump comprises an impeller disc, a main blade and an auxiliary blade which are integrally formed, wherein the main blade and the auxiliary blade have the same rotating direction and are respectively arranged on two sides of the impeller disc, and the main blade faces the water inlet direction of the water pump.

On the basis of the scheme, the thickness of the auxiliary blade is smaller than that of the main blade.

The utility model also discloses a large-lift water pump, including foretell bilobed wheel structure, bilobed wheel structure fixed connection connects gradually bearing box, machine closing cap, end cover, casing and the storehouse of intaking on the pump shaft at the epaxial bearing box that connects gradually of pump, bilobed wheel structure sets up in the cavity that end cover and casing formed, sets up the outlet on the casing, and the storehouse is intake to the main leaf orientation.

On the basis of the scheme, a baffle is fixedly arranged in the water inlet bin, and a channel which is communicated along the axis of the pump shaft is arranged on the baffle.

On the basis of the scheme, the baffle structure is a hollow disc with holes or strip-shaped plates arranged at intervals.

Preferably, a cutter is fixedly arranged on the pump shaft, is of a fan blade-shaped structure and is arranged in the water inlet bin.

On the basis of the scheme, a sediment discharge hole is formed in the side wall of the water inlet bin.

The utility model has the advantages that: the auxiliary blades with the same rotating direction are arranged on the back of the main blade, so that liquid impacting on the end cover of the water pump is secondarily acted and thrown, the pressure of water flow on the end cover is reduced, the leakage of the sealing part of the end cover is effectively avoided, the lift of the water pump is greatly increased, and the cost is saved; set up baffle and cutter in the storehouse department of intaking, can prevent objects such as the great volume stone from entering the pump body along with the rivers to can cut up grass, leaf etc. and prevent to cause the harm to the blade, and can reduce the impurity in the output rivers.

Drawings

FIG. 1: the structure of the double impeller of the utility model is schematically shown;

FIG. 2: the utility model discloses a cross-sectional structure diagram of a large-lift water pump;

FIG. 3: the utility model discloses baffle structure schematic diagram.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the double-impeller structure of the water pump comprises an impeller disc 53, a main blade 54 and an auxiliary blade 55 which are integrally formed, wherein the main blade 54 and the auxiliary blade 55 have the same rotating direction and are respectively arranged at two sides of the impeller disc 53, and the main blade 54 faces the water inlet direction of the water pump. As shown in fig. 2, the large-lift water pump includes the above-mentioned double-impeller structure, the double-impeller structure is fixedly connected to the pump shaft 42, the bearing box 41, the machine cover 44, the end cover 51, the housing 52 and the water inlet bin 56 are sequentially connected to the pump shaft 42, the double-impeller structure is disposed in a cavity formed by the end cover 51 and the housing 52, the housing 52 is provided with a water outlet, water flow inputted through the water inlet bin 56 is discharged through the water outlet after the double-impeller structure is acted, and the water outlet is not shown in the figure. The main blade 54 faces the water inlet bin 56, the main blade 54 drives the water flow input by the water inlet bin 56 to rotate to form high-pressure water flow, part of the high-pressure water flow is not discharged from the water outlet and falls into one side of the cavity opposite to the auxiliary blade 55, and the auxiliary blade 55 drives the part of the water flow to be thrown up again in the same direction, so that the high-pressure water flow is prevented from impacting the end cover 51 to cause leakage, and meanwhile, the lift of the water pump is increased. Preferably, the secondary blades 55 have a smaller thickness than the primary blades 54 due to the smaller flow rate of water that the secondary blades 55 need to carry, thereby reducing cost and volume if necessary.

The water inlet bin 56 is fixedly provided with a baffle plate 58, the baffle plate 58 is provided with a channel penetrating along the axis of the pump shaft 42, the baffle plate 58 is used for blocking objects with larger volume, such as stones in the water flow, preferably, as shown in fig. 2 and 3, the baffle plate 58 is a hollow disc with holes or strip-shaped plates arranged at intervals, so that the water flow can reach the main blade 54 from the circular holes or the intervals between the strip-shaped plates. The water flow input by the device can carry impurities such as grass leaves and leaves besides large-volume stones, in order to clean the impurities, a cutter 57 is fixedly arranged on the pump shaft 42, the cutter 57 is of a fan-blade-shaped structure and is arranged in the water inlet bin 56, the cutter 57 cuts the impurities in the process of rotating along with the pump shaft 42, a sediment discharge hole 59 is formed in the side wall of the water inlet bin 56 and is used for discharging the impurities in time, and the sediment discharge hole 59 can be arranged near the cutter 57 and/or the baffle 58.

The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.

Claims

1. The double-impeller structure of the water pump is characterized by comprising an impeller disc (53), a main blade (54) and an auxiliary blade (55) which are integrally formed, wherein the main blade (54) and the auxiliary blade (55) have the same rotating direction and are respectively arranged on two sides of the impeller disc (53), and the main blade (54) faces the water inlet direction of the water pump.

2. A double impeller construction for a water pump according to claim 1, characterized in that the thickness of the secondary blades (55) is smaller than the thickness of the primary blades (54).

3. The large-lift water pump is characterized by comprising the double-impeller structure of claim 1 or claim 2, wherein the double-impeller structure is fixedly connected to a pump shaft (42), the pump shaft (42) is sequentially connected with a bearing box (41), a machine seal cover (44), an end cover (51), a shell (52) and a water inlet bin (56), the double-impeller structure is arranged in a cavity formed by the end cover (51) and the shell (52), a water outlet is formed in the shell (52), and a main blade (54) faces the water inlet bin (56).

4. The high-lift water pump according to claim 3, characterized in that a baffle plate (58) is fixedly arranged in the water inlet bin (56), and a channel which penetrates along the axis of the pump shaft (42) is arranged on the baffle plate (58).

5. A high-lift water pump according to claim 4, characterized in that the baffle (58) is constructed as a hollow perforated disc or as spaced strips.

6. The high-lift water pump according to claim 3, characterized in that a cutter (57) is fixedly arranged on the pump shaft (42), and the cutter (57) is of a fan-blade-shaped structure and is arranged in the water inlet bin (56).

7. A high-lift water pump according to claim 6, characterized in that the side walls of the inlet sump (56) are provided with sediment discharge holes (59).