Guide vane assembly of full-lift submersible sewage submersible pump

Abstract

The utility model provides a guide vane assembly of a full-lift submersible sewage submersible pump, and belongs to the technical field of submersible pumps. The impeller comprises a base plate, a plurality of blades and a sleeve, the base plate and the sleeve are both circular, the inner ends of the blades are circumferentially and evenly distributed on the outer edge of the base plate, the outer ends of the blades are fixedly connected with the inner wall of the sleeve, the blades are in an arc sheet shape and are vertical, and partition plates are formed on the inner side faces of the outer ends of the blades in the radial direction of the base plate. The outer side of the partition plate is connected with the inner side wall of the blade, and a triangular water outlet is formed between the outer wall of the blade and the interior of the sleeve. The pump has the advantages of being high in lift, reducing blocking and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of submersible pumps, and particularly refers to a guide vane assembly of a full-lift submersible sewage pump. Background Art

[0002] At present, most of the multi-stage submersible pumps used in the market adopt a single impeller form due to the limitation of their structural assembly schemes, which greatly restricts the lift of pumping sewage. To increase the lift, the guide vanes in multi-stage submersible pumps are designed to be relatively large and present many problems.

[0003] Usually, the guide vanes work in a closed form. During rotation, impurities in the sewage are likely to accumulate at the joints of the guide vanes. In addition, when the multi-stage pump stops and then starts again, there are many impurities in the sewage, and it is difficult for the impeller to rotate, resulting in failure to start. In severe cases, the machine is likely to burn out, affecting normal use. Summary of the Invention

[0004] The purpose of the utility model is to provide a guide vane assembly of a full-lift submersible sewage pump, which uses a unique semi-through structure to reduce the blockage of sewage in the guide vanes while ensuring the high lift of the multi-stage pump.

[0005] The purpose of the utility model is achieved as follows:

[0006] A guide vane assembly of a full-lift submersible sewage pump includes a base plate, several blades and a sleeve. Both the base plate and the sleeve are circular. The inner ends of several blades are circumferentially distributed on the outer edge of the base plate, and the outer ends of several blades are fixedly connected to the inner wall of the sleeve. The blades are in the shape of arc flakes and are vertical. An intermediate plate is formed on the inner side surface of the outer end of the blade along the radial direction of the base plate. The outer side of the intermediate plate is connected to the inner side wall of the blade. A triangular water outlet is formed between the outer wall of the blade and the inside of the sleeve.

[0007] The utility model is further provided that a connecting block is formed at the bottom of the outer end of the blade towards the back surface of the base plate, and the side wall of the connecting block is fixedly connected to the inner wall of the sleeve.

[0008] The utility model is further provided that a flow guiding portion is formed on the surface of the intermediate plate, and the thickness gradually becomes thicker from the end far away from the blade to the end close to the blade.

[0009] The utility model is further provided that the number of the blades is five, and the number of the water outlets is five.

[0010] The utility model is further provided that the maximum diameter width of the water outlet is twice the minimum diameter width.

[0011] The utility model is further provided that the base plate, the blades and the sleeve are integrally cast.

[0012] The present utility model is further configured such that an installation hole is formed in the middle of the substrate, a guide wheel is inserted into the installation hole, and a plurality of flow-increasing vane plates distributed circumferentially are provided on the surface of the guide wheel.

[0013] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0014] The guide vane assembly provided by the present utility model changes the traditional guide vane structure and adopts a semi-open structure, which can smoothly pass through a certain amount of impurities during operation to prevent blockage in the assembly; at the same time, the refluxed sewage liquid can pass through the water outlet to form an impeller flow channel, which brings convenient conditions for the next startup of the operation, so that the phenomenon of machine jamming will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0016] Figure 2 is a schematic structural view of the present utility model Figure 2 ;

[0017] Figure 3 is a schematic structural view of the present utility model when assembling the guide wheel;

[0018] REFERENCE NUMERALS:

[0019] 1 - substrate; 10 - installation hole

[0020] 2 - vane; 20 - intermediate plate; 21 - water outlet; 22 - connecting block; 23 - guiding part;

[0021] 3 - sleeve;

[0022] 4 - guide wheel; 40 - flow-increasing vane plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present utility model with specific embodiments in conjunction with the drawings. Refer to Figure 1 and Figure 2 :

[0024] A guide vane assembly of a full-lift submersible sewage pump includes a substrate 1, a plurality of vanes 2 and a sleeve 3. The substrate 1 and the sleeve 3 are both circular. The inner ends of the plurality of vanes 2 are circumferentially and uniformly distributed on the outer edge of the substrate 1, and the outer ends of the plurality of vanes 2 are fixedly connected to the inner wall of the sleeve 3. The vanes 2 are in the shape of an arc sheet and are vertically arranged. An intermediate plate 20 is formed on the inner side surface of the outer end of the vane 2 along the radial direction of the substrate 1. The outer side of the intermediate plate 20 is connected to the inner side wall of the vane 2. A triangular water outlet 21 is formed between the outer wall of the vane 2 and the interior of the sleeve 3.

[0025] In the above structure, the guide vane has an upper surface and a lower surface. The periphery of the upper surface is respectively provided with a plurality of water outlets. When sewage passes through, the flow channel is conical, providing an effective change for pumping sewage with a high lift; and the opened water outlets can enable the residual water to quickly flow back after the guide vane stops working, and rely on the water outlets to achieve rapid start-up, avoiding the influence of particulate debris on the rotation of the guide vane.

[0026] Preferably, a connecting block 22 is formed at the bottom of the outer end of the blade 2 towards the back surface of the substrate 1, and the side wall of the connecting block 22 is fixedly connected to the inner wall of the sleeve 3.

[0027] During use, the number of the guide vanes is several, and they are arranged in a step-by-step manner. One side of the guide vane has blades and the other side is flat. When rotating, suction is generated, and multiple settings can achieve a pressurizing effect.

[0028] Preferably, a flow guiding portion 23 is formed on the surface of the spacer plate 20, and the thickness gradually becomes thicker from the end far away from the blade 2 to the end close to the blade 2. The flow guiding portion 23 can reduce the water flow resistance when sewage enters, thereby preventing particulate matter from clogging.

[0029] Preferably, the number of the blades 2 is five, and the number of the water outlets 21 is five. The odd number setting can prevent symmetric resonance and ensure the service life.

[0030] Preferably, the maximum diameter width of the water outlet 21 is twice the minimum diameter width. This conforms to the liquid flow and reduces the flow resistance.

[0031] Preferably, the substrate 1, the blade 2 and the sleeve 3 are integrally cast. This ensures the overall strength.

[0032] As Figure 3 shown, an installation hole 10 is opened in the middle of the substrate 1, a guide wheel 4 is inserted into the installation hole 10, and a plurality of circumferentially distributed flow increasing vane plates 40 are arranged on the surface of the guide wheel 4. In order to enhance the flow rate of the guide vane, the guide wheel is installed in a detachable manner, which is convenient for installation, and the flow rate can be further increased through the flow increasing vane plates on the surface.

[0033] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A guide vane assembly of a full-lift submersible sewage pump, comprising a base plate (1), a plurality of blades (2) and a sleeve (3), characterized in that: The base plate (1) and the sleeve (3) are both circular, the inner ends of the plurality of blades (2) are evenly distributed on the outer edge of the base plate (1) in the circumferential direction, the outer ends of the plurality of blades (2) are fixedly connected to the inner wall of the sleeve (3), the blades (2) are in the shape of circular arc sheets and are arranged vertically, the inner side surfaces of the outer ends of the blades (2) are formed with intermediate plates (20) along the radial direction of the base plate (1), the outer sides of the intermediate plates (20) are connected to the inner side walls of the blades (2), and a triangular water outlet (21) is formed between the outer walls of the blades (2) and the inner wall of the sleeve (3).

2. The guide vane assembly of a full-lift submersible sewage pump according to claim 1 is characterized in that: A connecting block (22) is formed at the bottom of the outer end of the blade (2) towards the back side of the base plate (1), and the side wall of the connecting block (22) is fixedly connected to the inner wall of the sleeve (3).

3. The guide vane assembly of a full-lift submersible sewage pump according to claim 1 is characterized in that: A flow guide portion (23) is formed on the surface of the intermediate plate (20), and the thickness gradually increases from an end away from the blade (2) to an end close to the blade (2).

4. The guide vane assembly of a full-lift submersible sewage pump according to claim 1, characterized in that: The number of the blades (2) is five, and the number of the water outlets (21) is five.

5. The guide vane assembly of a full-lift submersible sewage pump according to claim 4, characterized in that: The maximum opening width of the water outlet (21) is twice the minimum opening width.

6. A guide vane assembly of a full-lift submersible sewage pump according to any one of claims 1 to 5, characterized in that: The base plate (1), the blades (2) and the sleeve (3) are integrally cast.

7. The guide vane assembly of a full-lift submersible sewage pump according to claim 1, characterized in that: A mounting hole (10) is provided in the middle of the base plate (1), a guide wheel (4) is inserted into the mounting hole (10), and a plurality of circumferentially distributed flow increasing blades (40) are provided on the surface of the guide wheel (4).

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