WO2020168782A1

WO2020168782A1 - Solid-liquid two-phase flow stirring-type impeller

Info

Publication number: WO2020168782A1
Application number: PCT/CN2019/123259
Authority: WO
Inventors: 何祥炎; 董小花; 孙国政; 马军令; 高芳红
Original assignee: 三联泵业股份有限公司
Priority date: 2019-02-21
Filing date: 2019-12-05
Publication date: 2020-08-27
Also published as: CN109779963A; ZA202003839B

Abstract

Provided is a solid-liquid two-phase flow stirring-type impeller, comprising a rear cover plate (1), wherein a wheel hub (3) is fixedly connected to the middle of the rear cover plate (1); several cylindrical blades (2) are fixedly provided on an upper side of the rear cover plate (1), and the top of each of the cylindrical blades (2) is fixedly connected to a swirling flow-type blade (4); and several back blades (5) are fixedly connected to a bottom side of the rear cover plate (1). Compared with other forms of non-clogging impellers, this impeller can deliver the concentration with a better performance, has a good non-destructive performance, and is less destructive to conveyed materials, high in efficiency, and more stable in operation.

Description

A solid-liquid two-phase flow stirring impeller

Technical field

The invention relates to the technical field of solid-liquid two-phase flow impurity pumps, in particular to a solid-liquid two-phase flow stirring impeller.

Background technique

For impurity pumps that transport solid-liquid two-phase fluids, due to the complex operating environment, insufficient control of the flow structure in the pump, and the hydraulic design cannot fully comply with the solid-liquid flow, etc., resulting in excessive damage to the pump flow components (especially the impeller). Faster, the efficiency of the water pump decreases and the service life is shortened. In addition to the variety of mixing purposes and the complexity of the mixing reaction, the traditional impeller agitator has low mixing efficiency, high power consumption, poor throughput, and high casting cost. The liquid flow in the mixing tank is three-dimensional, highly unstable, turbulent, pulsating and random. Turbulence brings great difficulties to transportation.

Summary of the invention

In order to solve the above technical problems, the present invention provides a solid-liquid two-phase flow stirring impeller, which enables the solid-liquid two-phase flow to have better passing capacity, high efficiency and more stable operation.

In order to achieve the above objective, the present invention provides the following solutions:

The invention provides a solid-liquid two-phase flow stirring impeller, which includes a rear cover plate, a hub is fixedly connected to the middle of the rear cover plate, a plurality of cylindrical blades are fixed on the upper side of the rear cover plate, and the rear cover plate A number of back blades are fixedly connected to the bottom side.

Preferably, the plurality of cylindrical blades are symmetrically and evenly distributed on the top of the rear cover plate about the center of the hub.

Preferably, five cylindrical blades are provided on the top of the rear cover plate.

Preferably, the back blades are symmetrically and evenly distributed on the bottom of the rear cover plate about the center of the hub.

Preferably, the tops of the cylindrical blades are fixedly connected with swirling blades.

Preferably, the swirling blade is arranged at the top of the cylindrical blade near one end of the hub.

The working principle of the present invention: five identical and uniformly distributed cylindrical blades are arranged on the rear cover. In the design of the blades, hydraulic performance is comprehensively considered, and the work done by the blades to the transmission medium increases the transmission efficiency. The wheel hub can be effectively connected with the drive shaft to transmit torque. Through comprehensive consideration of economic benefits and load-bearing performance, it can effectively ensure the transmission of mechanical work and torque, thereby ensuring that the force transmitted by the driver to the medium is more effectively transmitted to the conveying medium. Effective transmission of the medium. The swirling vane is the core part of the impeller, and through its effective work, there are significant improvements in improving passing performance, increasing efficiency, and increasing the reliable operation of the pump. The back blade can reduce the pressure on the back of the blade and increase the sealing reliability of the rear end of the pump body

The beneficial effects of the present invention are: the front-end swirling blades can be used to drain water and transport high-viscosity, solid particles and easily clogged substances, so that they can flow out smoothly. There is a twisted blade in the open-close impeller, and the conical hub body The upper part is extended in the axial direction from the suction port, the rear end of the cylindrical blade, the radius of the blade gradually increases, forming a spiral flow channel, the impeller design is the same and uniformly distributed cylindrical first centrifugal impeller, by designing a swirl at the front end The blades can transport higher concentration than other forms of non-clogging impellers, with good non-destructive performance, less damage to the conveyed materials, high efficiency, and more stable operation. And low energy consumption, low power consumption. To achieve the purpose of energy saving and environmental protection.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, without creative labor, other drawings can be obtained from these drawings.

Figure 1 is a schematic diagram of the three-dimensional structure of the bottom side of the present invention;

2 is a schematic diagram of the three-dimensional structure of the top side of the present invention;

Figure 3 is a plan view of the present invention;

In the figure: 1. Rear cover plate; 2. Cylindrical blades; 3. Hub; 4. Swirl blades; 5. Back blades.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in Figure 1-3, a new type of solid-liquid two-phase flow swirling impeller has better non-clogging performance during use. Coupled with the advancement of imported swirling blades, this type of impeller can transport both solid and liquid phases. The flow performance is better, and when the solid-liquid two-phase flow of large particles, high viscosity and fibrous materials is transported, the transported concentration is better than other forms of non-blocking impellers. The non-destructive performance is good. The solid-liquid two-phase fluid gradually advances forward in this pump without sudden changes in the flow direction, so the flow is more stable, and the damage to the conveyed material is less than other forms of unblocked impellers. High efficiency is also the characteristic of this impeller. Compared with ordinary impellers, swirling impellers have a uniform flow rate due to the existence of swirling blades at the front end, and are more efficient than ordinary impurity pumps. The suction performance is good. This kind of blade extends to the suction port. Even if the medium is easy to block the impeller, it can be effectively stirred. When the medium flow is unstable, it can also work stably to provide more efficient transmission. It can be used in complex environments. Under use. Thereby expanding the application range in the solid-liquid two-phase flow medium. The new type of solid-liquid two-phase flow swirling impeller in the present invention includes a rear cover plate 1. The rear cover plate 1 is the main supporting component of the present invention and the blades together form a flow channel, so the back cover plate 1 is provided with five identical And evenly distributed cylindrical blades 2, in the design of the cylindrical blades 2, the hydraulic performance is comprehensively considered, and the cylindrical blades 2 work to the transmission medium to increase the transmission efficiency. The hub 3 can be effectively connected with the transmission shaft to transmit torque. Through comprehensive consideration of economic benefits and load-bearing performance, it can effectively ensure the transmission of mechanical work and torque, thereby ensuring that the force transmitted by the driving machine to the medium is more effectively transmitted to the conveying medium. Ensure the effective transmission of the medium. The swirling blade 4 is the core part of the impeller. Through its effective work, it has greatly improved in terms of improving passing performance, increasing efficiency, and increasing the reliable operation of the pump. The back blade 5 can reduce the pressure on the back of the blade and increase the sealing reliability of the rear end of the pump body.

Preferably, the number of the cylindrical blades 2 is 5, and they are evenly distributed on the rear cover plate 1, which can give the liquid a greater centrifugal force, thereby realizing the high efficiency of liquid transmission speed.

Preferably, the number of swirling blades 4 is 5, which is the core component for conveying solid-liquid two-phase flow media and increasing the passing capacity. The swirling blades 4 can be used to ensure that the medium entering the blade channel is uniform, stable and guaranteed. The impeller works effectively and the conveying efficiency is improved.

Preferably, the hub 3 is the core component of mechanical work and transmission torque, which ensures the maximum transmission of driving torque to the liquid and ensures the effective work of the impeller.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other same elements in the process, method, article, or equipment including the element.

In this specification, specific examples are used to describe the principles and implementation of the present invention. The descriptions of the above examples are only used to help understand the methods and core ideas of the present invention; at the same time, for those skilled in the art, according to this The idea of the invention will change in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims

A solid-liquid two-phase flow stirring impeller, comprising a rear cover plate (1), characterized in that a hub (3) is fixedly connected to the middle of the rear cover plate (1), and the rear cover plate (1) A number of cylindrical blades (2) are fixed on the upper side, and a number of back blades (5) are fixedly connected to the bottom side of the rear cover plate (1).
The solid-liquid two-phase flow stirring impeller according to claim 1, wherein the plurality of cylindrical blades (2) are symmetrically and evenly distributed on the rear cover (1) about the center of the hub (3). top.
The solid-liquid two-phase flow stirring impeller according to claim 2, characterized in that the top of the rear cover plate (1) is provided with five cylindrical blades (2).
The solid-liquid two-phase flow stirring impeller according to claim 1, wherein the back blades (5) are symmetrically and uniformly distributed at the bottom of the rear cover plate (1) about the center of the hub (3).
The solid-liquid two-phase flow stirring impeller according to claim 1, wherein the top of the cylindrical blade (2) is fixedly connected with a swirling blade (4).
The solid-liquid two-phase flow stirring impeller according to claim 5, characterized in that the swirling blade (4) is arranged at one end of the cylindrical blade (2) close to the hub (3) the top of.