CN209976810U

CN209976810U - Centrifugal pump

Info

Publication number: CN209976810U
Application number: CN201920865898.7U
Authority: CN
Inventors: 高科
Original assignee: Chongqing Juhao Pump Co Ltd
Current assignee: Chongqing Juhao Pump Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-01-21
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a centrifugal pump, including the support, the pump body, motor and impeller, the motor sets up on the support, and motor shaft on the motor passes the support and inserts the pump body, and the impeller setting is on the motor shaft, and the impeller setting is at the inner chamber of the pump body, pump body inner chamber edge is provided with the arch, protruding orientation body inner chamber stretches into, be provided with threaded hole in the arch and be used for the installing support, the impeller includes body, blade and extension, the blade sets up on the body, the shape of extension is the same with the blade shape, the extension is connected with the blade, the extension is continuation of blade, the extension is close to bellied position and is provided with the breach, the breach is used for avoiding the arch when the impeller is rotatory, prevents that the arch from disturbing the impeller and rotates. The efficiency of pumping water is improved by increasing the diameter of the impeller, and the energy consumption is reduced. Meanwhile, the bulge for installing the support is avoided by arranging the notch, so that the rotation of the impeller cannot be interfered.

Description

Centrifugal pump

Technical Field

The utility model relates to a water pump technical field, concretely relates to centrifugal pump.

Background

In the water pump design, in order to alleviate the weight and the material saving of water pump, the pump body shell of water pump generally sets up thinly, and the support that is used for installing the motor all generally fixes on the pump body through the bolt-up, the shell of the pump body is too thin, the support can not the direct mount on the pump body, need set up the step on the pump body and come the installing support, and the step needs stretch into the inner chamber of body, consequently, it can influence the rotation of impeller, thereby all reduce the diameter of impeller and avoid the step in the current water pump, but will influence the pumping efficiency and the lift of water pump after reducing the diameter of impeller.

SUMMERY OF THE UTILITY MODEL

In view of this, the to-be-solved problem of the present invention is to provide a centrifugal pump, which can improve the pumping efficiency and the lift of the water pump.

The utility model discloses an above-mentioned technical problem is solved to following technical means: the utility model provides a pair of centrifugal pump, including the support, the pump body, motor and impeller, the motor sets up on the support, and motor shaft on the motor passes the support and inserts the pump body, and the impeller setting is on the motor shaft, and the impeller setting is at the inner chamber of the pump body, pump body inner chamber edge is provided with the arch, protruding orientation body inner chamber stretches into, be provided with threaded hole in the arch and be used for the installing support, the impeller includes body, blade and extension, the blade sets up on the body, the shape of extension is the same with the blade shape, the extension is connected with the blade, the extension is continuation of blade, the extension is close to bellied position and is provided with the breach, the breach is used for avoiding the arch when the impeller is rotatory, prevents that the arch from disturbing the impeller and rotates.

Furthermore, the bulge is in a streamline shape at one side facing to the water flow direction, and a fillet is arranged at the transition position.

Furthermore, one side of the expansion part facing the bulge is in a streamline shape.

Furthermore, the expansion part is movably connected with the blades, and the expansion part can slide on the blades along the axial direction of the impeller.

Further, the sliding distance of the expansion part is 3 ~ 5 mm, and the minimum gap between the expansion part and the protrusion is 2 mm.

Further, the extension portion is connected with the blades through hinges, the angle between the extension portion and the blades is adjustable, a limiting block is arranged on the blades and used for limiting the angle adjusting range, and the angle adjusting range is 0 ~ 15 degrees.

Further, the expansion part is made of elastic materials.

According to the above technical scheme, the beneficial effects of the utility model are that: the utility model provides a pair of centrifugal pump, including the support, the pump body, motor and impeller, the motor sets up on the support, and motor shaft on the motor passes the support and inserts the pump body, and the impeller setting is on the motor shaft, and the impeller setting is at the inner chamber of the pump body, pump body inner chamber edge is provided with the arch, protruding orientation body inner chamber stretches into, be provided with threaded hole in the arch and be used for the installing support, the impeller includes body, blade and extension, the blade sets up on the body, the shape of extension is the same with the blade shape, the extension is connected with the blade, the extension is continuation of blade, the extension is close to bellied position and is provided with the breach, the breach is used for avoiding the arch when the impeller is rotatory, prevents that the arch from disturbing the impeller and rotates. The efficiency and the lift of pumping water are improved by increasing the diameter of the impeller, and the energy consumption is reduced. Meanwhile, the bulge for installing the support is avoided by arranging the notch, so that the rotation of the impeller cannot be interfered.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a three-dimensional structure diagram of a centrifugal pump of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at position A;

FIG. 3 is a top view of FIG. 1;

fig. 4 is a perspective view of the impeller of the present invention.

Reference numerals:

1-a motor; 2-a scaffold; 3-a pump body; 4-an impeller;

31-a bump; 41-leaf blade; 42-an expansion; 43-notch.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for 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", etc. 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," "second," etc. 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 description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 by those of ordinary skill in the art through specific situations.

The utility model provides a centrifugal pump, including support 2, the pump body 3, motor 1 and impeller 4, motor 1 sets up on support 2, and the motor 1 axle on the motor 1 passes through support 2 and inserts the pump body 3, and impeller 4 sets up on motor 1 axle, and impeller 4 sets up the inner chamber in the pump body 3, the edge of the inner chamber of the pump body 3 is provided with arch 31, arch 31 stretches into towards the body inner chamber, be provided with the screw hole in the arch 31 and be used for installing support 2, impeller 4 includes body, blade 41 and extension 42, blade 41 sets up on the body, the shape of extension 42 is the same with blade 41 shape, extension 42 is connected with blade 41, extension 42 is the continuation of blade 41, extension 42 is provided with breach 43 near the position of arch 31, breach 43 is used for avoiding arch 31 when impeller 4 rotates, the preventing projection 31 interferes with the rotation of the impeller 4. Thereby increase the diameter of impeller 4 on the blade 41 of impeller 4 extension 42, improve the pumping efficiency and the lift of water pump, reduce the energy consumption, set up breach 43 on extension 42 simultaneously and be used for keeping away from the arch 31 of installing support 2, prevented that arch 31 from disturbing the rotation of impeller 4.

As a further improvement to the above technical solution, the protrusion 31 is streamlined on the side facing the water flow direction, and a rounded corner is provided at the transition. Streamline treatment is carried out on one side facing to the water flow direction, and the chamfer and the gradient are arranged to facilitate the flow of water flow of the impeller 4 in the rotating process, so that the resistance of the water flow to the impeller 4 is reduced.

As a further improvement to the above technical solution, the side of the expanding portion 42 facing the protrusion 31 is provided with a streamline shape. Streamline treatment is carried out on the bulge 31, so that the flow of water flow is smoother, and the resistance of the water flow to the impeller 4 is reduced.

As a further improvement to the above technical solution, the expanding portion 42 is movably connected to the blade 41, and the expanding portion 42 can slide on the blade 41 along the axial direction of the impeller 4. The expansion part 42 slides on the blade 41 along the axial direction of the impeller 4 to automatically adjust the gap between the expansion part 42 and the position of the protrusion 31, so that the phenomenon that when the expansion part 42 passes through the position of the protrusion 31, because the gap is too small, water flow forms axial thrust on the blade 41 is avoided, and the rotating resistance of the impeller 4 is increased. Meanwhile, in the rotation process of the impeller 4, when the flow rate of water is faster, the thrust applied to the expansion part 42 is larger, and the upstream surface of the expansion part 42 is set to be streamline, so that the water flow can apply an upward thrust to the expansion part 42, and the expansion part 42 can automatically adapt to the height according to the flow rate of water.

As a further improvement to the above technical solution, the sliding distance of the expansion part 42 is 3 ~ 5 mm, the minimum gap between the expansion part 42 and the protrusion 31 is 2 mm, the sliding distance is set to 3 ~ 5 mm to prevent the expansion part 42 from moving too much and colliding against the inner wall of the pump body 3, and the minimum gap between the expansion part 42 and the protrusion 31 is 2 mm to prevent the expansion part 42 from colliding against the protrusion 31 during the rotation of the impeller 4.

As a further improvement of the above technical solution, the expansion part 42 is connected with the blade 41 by a hinge, the angle between the expansion part 42 and the blade 41 is adjustable, and the blade 41 is provided with a limit block for limiting the angle adjustment range, the angle adjustment range is 0 ~ 15 degrees, the expansion part 42 is connected with the blade 41 by a hinge so that the angle between the expansion part 42 and the blade 41 can be adjusted, and the impeller 4 is rotated, the angle is self-adapted by the thrust of water to the expansion part 42. preferably, a return spring plate is provided between the blade 41 and the expansion part 42, both ends of the return spring plate are respectively provided on the blade 41 and the expansion part 42, when the angle between the expansion part 42 and the blade 41 is 0 degrees, the return spring plate is at the initial position, and when the angle between the expansion part 42 and the blade 41 is 15 degrees, the return spring plate reaches the maximum position, when the thrust of water to the expansion part 42 is greater than the return force to the expansion part 42, the angle between the blade 41 and the expansion part 42 is automatically adjusted according to the thrust of the expansion part 42.

In embodiment 2, the expansion part 42 is made of an elastic material. The expansion part 42 is fixedly arranged on the blade 41, the expansion part 42 is made of elastic material, after the angle is changed under the thrust of the water flow, when the thrust of the water flow is reduced, the expansion part is reset under the elastic force of the elastic material, so that the angle can be adaptively adjusted according to the thrust of the water flow to the expansion part 42.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A centrifugal pump characterized by: comprises a bracket (2), a pump body (3), a motor (1) and an impeller (4), wherein the motor (1) is arranged on the bracket (2), the shaft of the motor (1) on the motor (1) penetrates through the bracket (2) and is inserted into the pump body (3), the impeller (4) is arranged on the shaft of the motor (1), the impeller (4) is arranged in an inner cavity of the pump body (3), a bulge (31) is arranged at the edge of the inner cavity of the pump body (3), the bulge (31) extends into the inner cavity of the body, a threaded hole is formed in the bulge (31) and is used for installing the bracket (2), the impeller (4) comprises a body, blades (41) and an expansion part (42), the blades (41) are arranged on the body, the expansion part (42) has the same shape as the blades (41), the expansion part (42) is connected with the blades (41), and the expansion part (42) is a continuation of the blades (41), the position of the expansion part (42) close to the protrusion (31) is provided with a notch (43), and the notch (43) is used for avoiding the protrusion (31) when the impeller (4) rotates, so that the protrusion (31) is prevented from interfering the rotation of the impeller (4).

2. A centrifugal pump according to claim 1, characterized in that: the bulge (31) is in a streamline shape at one side facing the water flow direction, and a fillet is arranged at the transition position.

3. A centrifugal pump according to claim 1, characterized in that: one side of the expanding part (42) facing the bulge (31) is in a streamline shape.

4. A centrifugal pump according to any one of claims 1-3, characterized in that: the expansion part (42) is movably connected with the blades (41), and the expansion part (42) can slide on the blades (41) along the axial direction of the impeller (4).

5. A centrifugal pump according to claim 4, characterized in that: the sliding distance of the expansion part (42) is 3-5 mm, and the minimum gap between the expansion part (42) and the protrusion (31) is 2 mm.

6. A centrifugal pump according to claim 4, characterized in that: the blade is characterized in that the extension portion (42) is connected with the blade (41) through a hinge, the angle between the extension portion (42) and the blade (41) can be adjusted, a limiting block is arranged on the blade (41) and used for limiting the angle adjusting range, and the angle adjusting range is 0-15 degrees.

7. A centrifugal pump according to claim 4, characterized in that: the expansion part (42) is made of elastic material.