CN212360292U - Punching press welding impeller - Google Patents

Abstract

The utility model discloses a punching press welding impeller, it comprises front shroud, blade, back shroud, impeller wheel hub stamping forming's part, welds blade, back shroud, reinforcing plate, impeller wheel hub into the impeller structure. Compared with the background technology, the utility model has the advantages that the guide vane of the utility model is fast to manufacture, the cost is relatively reduced, and the reinforcing plate is welded on the rear cover plate, so as to better transmit the torque and increase the strength of the impeller; the impeller has no pollution to the environment basically, and can replace the impeller in the background technology to a great extent.

Description

Punching press welding impeller

The technical field is as follows:

the utility model belongs to the impeller field of making of water pump especially relates to a punching press welding impeller of stainless steel centrifugal pump.

Background art:

the water pump impeller is a component of the inner core of the water pump, and water flow pumping is achieved through rotation of the water pump impeller. The water pump impeller in the prior art generally comprises a front cover, a rear cover and a plurality of blades which are arranged between the front cover and the rear cover and distributed along the circumferential direction, wherein the front cover, the blades and the rear cover are integrally formed through a casting process, so that a water flow channel is formed between any two adjacent impellers.

At present, the centrifugal pump impeller with large flow rate is generally in a casting structure due to the consideration of high required strength, like an integrally cast impeller with the patent application number of 200820153169.0, the basic structure of the impeller is divided into an impeller front cover plate, blades, an impeller rear cover plate and an impeller hub, and the impeller has the advantage of high strength. The disadvantages are also evident: the casting period is long, the cost is high, the pollution is high, and the casting defect is easy to appear.

The invention content is as follows:

in order to solve the technical defect existing in the prior art background, the utility model aims at providing a punching press welding impeller who uses in centrifugal pump especially stainless steel centrifugal pump, this part uses up-to-date punching press welding technique, and intensity is high, and the cost reduces relatively, and manufacturing cycle is short, and is efficient. It is important that the manufacturing process has almost no pollution to the environment and is very environment-friendly.

In order to solve the above-mentioned purpose, the utility model adopts the following technical scheme:

a punching welded impeller is composed of a front cover plate, blades, a rear cover plate and parts formed by punching impeller hubs, and the blades, the rear cover plate, a reinforcing plate and the impeller hubs are welded into an impeller structure. The important parts are stamping and welding structures, the shapes of the important parts are close to the theoretical design, the hydraulic loss is small, and therefore the efficiency is high. Meanwhile, the thickness of the stainless steel plate used by the part meets the design strength requirement.

The front end of the impeller hub is connected with an annular hook structure and is welded with the rear cover plate, so that the front end of the impeller hub and the rear end of the impeller hub are welded more firmly.

The reinforcing plate is welded on the rear cover plate, so that torque can be transmitted better, and the strength of the impeller is increased.

The reinforcing plate is welded with an opening ring.

The mouth ring is provided with a flanging which is welded on the reinforcing plate.

Compared with the background technology, the utility model has the advantages that the guide vane of the utility model is fast to manufacture, the cost is relatively reduced, and the reinforcing plate is welded on the rear cover plate, so as to better transmit the torque and increase the strength of the impeller; the impeller has no pollution to the environment basically, and can replace the impeller in the background technology to a great extent.

Description of the drawings:

FIG. 1 is an exploded view of an impeller;

fig. 2 is a structural schematic diagram of an impeller with an improved structure of a mouth ring.

Front shroud, 2, back shroud, 3, choma 1, 4, impeller wheel hub, 5, strengthen, 6, blade, 7, choma 2.

The specific implementation mode is as follows:

example 1: referring to the attached figure 1, the centrifugal pump impeller comprises a front cover plate, blades, a rear cover plate, a reinforcing plate, an impeller hub, an opening ring 1 and the front cover plate, wherein the blades, the rear cover plate, the reinforcing plate and the impeller hub are welded into an impeller structure, and the opening ring is directly welded on the reinforcing plate.

Example 2: referring to the attached figure 1, the centrifugal pump impeller comprises a front cover plate, blades, a rear cover plate, a reinforcing plate, an impeller hub, a mouth ring 2 and a front cover plate, wherein the blades, the rear cover plate and the impeller hub are welded into an impeller structure, the reinforcing plate is welded behind the rear cover plate, a flanging is arranged on the mouth ring 2, and the flanging is welded on the reinforcing plate.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The same creation is considered to be simply replaced without changing the creation content of the present invention. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A punching press welding impeller which characterized in that: the front cover plate is formed by punching and molding parts of a front cover plate, blades, a rear cover plate and an impeller hub, the blades, the rear cover plate, a reinforcing plate and the impeller hub are welded into an impeller structure, and the front end of the impeller hub is connected with an annular hook structure and is welded with the rear cover plate.

2. The stamped and welded impeller of claim 1, wherein: and a reinforcing plate is welded on the rear cover plate.

3. The stamped and welded impeller of claim 1, wherein: the reinforcing plate is welded with an opening ring.

4. The stamped and welded impeller of claim 3, wherein: the mouth ring is provided with a flanging which is welded on the reinforcing plate.

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