CN217783844U

CN217783844U - Impeller for conveying fluid

Info

Publication number: CN217783844U
Application number: CN202220708976.4U
Authority: CN
Inventors: 王晶晶; 黄刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-11-11
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to an impeller for transmitting fluid, including impeller body, impeller body includes cylindrical base, base center department is provided with the shaft hole, the both ends symmetry of base is provided with the water diversion dish, two the water diversion dish with the global of base is connected, two the water diversion dish place plane with the axis of base is perpendicular, two the water diversion dish is kept away from one side of base all is provided with a plurality of first toothings, two be provided with a plurality of second toothings, each between the water diversion dish first toothings, each the second toothings is all followed the circumference equipartition of water diversion dish just along radially extending. The impeller for transmitting the fluid has the advantages that the fluid can be prevented from flowing back in the pump shell when in use, and the transmission efficiency is high.

Description

Impeller for conveying fluid

Technical Field

The utility model relates to an impeller technical field especially relates to an impeller for transmitting fluid.

Background

A pump is a machine device that delivers or pressurizes a fluid. The pump can be divided into a centrifugal pump and an axial flow pump according to the principle. non-Newtonian fluids are very common in the fields of dredging, metallurgy, chemical engineering, building materials, petroleum, food processing and other industries, and generally have the characteristic that the shearing force increases along with the shearing speed. The transfer of non-newtonian fluids typically employs centrifugal pumps, i.e., the fluid is pumped out of a water outlet at the pump housing by centrifugal force generated by the rotation of an impeller. However, the prior impeller for the transfer of non-newtonian fluids has the following problems:

1. the impeller is asymmetric in shape. Therefore, an axial load is easily generated on the pump shaft.

2. The blades of the impeller take the form of a turbine, causing excessive shear forces between the blades and the fluid.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can prevent that fluid from backflowing and the high impeller that is used for transmitting fluid of transmission efficiency in the pump case.

The technical scheme of the utility model is that:

the impeller for transmitting fluid comprises an impeller body, wherein the impeller body comprises a cylindrical base, a shaft hole is formed in the center of the base, water distribution discs are symmetrically arranged at two ends of the base and are connected with the circumferential surface of the base, the plane where the water distribution discs are located is perpendicular to the axis of the base, a plurality of first tooth pieces are arranged on one side, away from the base, of each water distribution disc, a plurality of second tooth pieces are arranged between the water distribution discs, and the first tooth pieces and the second tooth pieces are uniformly distributed in the circumferential direction of the water distribution discs and extend along the radial direction.

Preferably, the number of the first tooth plates is 8, and the number of the second tooth plates is 6.

In any of the above aspects, each of the first tooth pieces and each of the second tooth pieces are preferably provided in a curved surface shape.

In any of the above schemes, preferably, the shaft hole is provided with an internal thread or a key slot, and the base is connected with the pump shaft by a threaded connection or a key connection.

In any of the above schemes, preferably, a relief groove is provided at a connection between each first tooth plate and each second tooth plate and the water diversion disc.

In any of the above schemes, preferably, the base is provided with water permeable holes for balancing the pressure on both sides of the impeller body.

In any of the above schemes, preferably, the base, each water diversion disc, each first tooth piece, and each second tooth piece are made of nodular cast iron or aluminum alloy.

Compared with the prior art, the utility model discloses an impeller for transmitting fluid has can prevent that fluid from backflowing and the high beneficial effect of transmission efficiency in the pump case when using.

Drawings

Fig. 1 is a schematic view of a preferred embodiment of an impeller for transporting fluids according to the present invention.

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of the embodiment shown in FIG. 1.

The reference numbers in the figures illustrate:

101-a water distribution disc; 102-a first tine; 103-a second tooth sheet; 104-a load shedding groove; 105-shaft hole; 106-water permeable pores; 107-base.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientation or positional relationship is based on that shown in the drawings, and is only for convenience of description and simplicity of description, and does 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 invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

An impeller for transmitting fluid is shown in fig. 1-2 and comprises an impeller body, wherein the impeller body comprises a cylindrical base 107, a shaft hole 105 is formed in the center of the base 107, water distribution discs 101 are symmetrically arranged at two ends of the base 107, the two water distribution discs 101 are connected with the circumferential surface of the base 107, the plane where the two water distribution discs 101 are located is perpendicular to the axis of the base 107, a plurality of first toothed sheets 102 are arranged on one sides, away from the base 107, of the two water distribution discs 101, a plurality of second toothed sheets 103 are arranged between the two water distribution discs 101, and each first toothed sheet 102 and each second toothed sheet 103 are uniformly distributed along the circumferential direction of the water distribution discs 101 and extend along the radial direction.

In this embodiment, in use, the impeller body is connected to the pump shaft of the transfer pump via a shaft bore 105 provided at the base 107. In use, the knock out plate 101, which is symmetrically disposed at both ends of the base 107, functions to divide the pump chamber of the transfer pump. Specifically, the pump cavity of the transfer pump is divided into three regions along the direction of the pump shaft by the water diversion discs 101 symmetrically arranged at two ends of the base 107, and when fluid in the pump cavity moves at high speed, the fluid flows back in the direction of the pump shaft to cause reduction of the transfer efficiency.

The first teeth 102 and the second teeth 103 are provided in plural numbers to prevent the fluid from flowing back in the divided region of the pump chamber. Each of the first toothed plates 102 and each of the second toothed plates 103 are disposed perpendicular to the two water distribution plates 101. Each first tooth piece 102 and each second tooth piece 103 are uniformly distributed along the circumferential direction of the water distribution disc 101 and extend along the radial direction, so that the radial stress balance of the pump shaft is ensured, and the axial load of the pump shaft is prevented from being overlarge when the impeller runs at high speed. When the impeller works, the first teeth 102 and the second teeth 103 drive fluid in the pump cavity to rotate along the pump shaft to generate centrifugal force, and the fluid moving at high speed is pumped out at a water outlet reaching the pump shell.

In manufacturing, the impeller body can be integrally formed by casting. After casting, burrs on the surfaces of the base 107, the two water distribution plates 101, the first tooth plates 102 and the second tooth plates 103 can be polished and leveled by using tools such as sand paper, a grinding head and an edge trimmer. The number of the first teeth 102 at the two water distribution discs 101 is 8, and the number of the second teeth 103 is 6, which are taken into consideration of the casting difficulty and the fluid return flow in the divided area of the pump cavity.

In this embodiment, each of the first tooth pieces 102 and each of the second tooth pieces 103 are disposed in a curved shape. The bending direction of each first tooth piece 102 and each second tooth piece 103 is opposite to the rotating direction of the impeller body during operation. It is understood that conventional non-Newtonian fluids are such as: there is a non-linear relationship between shear force and shear rate for slurries, cosmetics, jams, and the like, i.e., shear force increases with increasing shear rate. By designing each first tooth plate 102 and each second tooth plate 103 to be curved, when the impeller rotates at high speed, the fluid can slide along the water-facing surface of each first tooth plate 102 and each second tooth plate 103 to reduce the relative shear rate of the edge of each first tooth plate 102 and each second tooth plate 103, so that the circumferential load of the pump shaft is reduced.

In this embodiment, the shaft hole 105 is provided with an internal thread or a key slot, and the base 107 is connected with the pump shaft by a threaded connection or a keyed connection. Wherein, the direction of rotation of the internal thread is opposite to the direction of rotation of the impeller during operation, so that the impeller is prevented from being unscrewed during rotation. The keyways may take the form of flat keys or splines.

In the present embodiment, relief grooves 104 are provided at the junctions of the first tooth plates 102, the second tooth plates 103 and the water diversion disc 101. When the height of each first tooth plate 102 and each second tooth plate 103 is larger, the relief groove 104 can prevent the stress from being excessively concentrated at the connection between each first tooth plate 102 and each second tooth plate 103 and the water diversion disc 101. The relief grooves 104 may be formed integrally with the impeller during casting of the impeller, or may be turned at a later stage.

In this embodiment, a water permeable hole 106 is provided at the base 107, the water permeable hole 106 is used for balancing the pressure at both sides of the impeller body, and the pressure of the divided region of the pump chamber is balanced by the water permeable hole 106. When the pump is used, the pump shaft is prevented from generating load in the circumferential direction.

In this embodiment, the base 107, the water diversion discs 101, the first tooth pieces 102, and the second tooth pieces 103 are made of ductile iron or aluminum alloy. The nodular cast iron or the aluminum alloy has the advantages of high strength, low cost and easy casting and forming.

The above-mentioned embodiments are only specific embodiments of the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is within the technical scope of the present invention, and according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered in the protection scope of the present invention.

Claims

1. The impeller for transmitting fluid comprises an impeller body and is characterized in that the impeller body comprises a cylindrical base (107), a shaft hole (105) is formed in the center of the base (107), water distribution discs (101) are symmetrically arranged at two ends of the base (107), the two water distribution discs (101) are connected with the circumferential surface of the base (107), the plane where the two water distribution discs (101) are located is perpendicular to the axis of the base (107), a plurality of first tooth sheets (102) are arranged on one side, away from the base (107), of each water distribution disc (101), a plurality of second tooth sheets (103) are arranged between the two water distribution discs (101), and the first tooth sheets (102) and the second tooth sheets (103) extend along the radial direction and are uniformly distributed in the circumferential direction of the water distribution discs (101).

2. The impeller for transferring fluids according to claim 1, characterized in that the number of first blades (102) is 8 and the number of second blades (103) is 6.

3. The impeller for transporting fluids according to claim 1 or 2, characterized in that each first tooth (102) and each second tooth (103) are arranged in a curved shape.

4. The impeller for transferring fluid according to claim 1, wherein the shaft hole (105) is provided with an internal thread or a key groove, and the base (107) is coupled with the pump shaft by a screw coupling or a key coupling.

5. The impeller for transferring fluids as claimed in claim 1, characterized in that the connection of each first tooth (102), each second tooth (103) and the water distribution disc (101) is provided with a relief groove (104).

6. The impeller for transferring fluids as claimed in claim 1, wherein water permeable holes (106) are provided at the base (107), the water permeable holes (106) being for equalizing the pressure at both sides of the impeller body.

7. The impeller for transporting fluids according to claim 1, characterized in that the base (107), the water distribution discs (101), the first tooth plates (102) and the second tooth plates (103) are made of nodular cast iron or an aluminum alloy.