Integrated flow guide shell

Abstract

The utility model provides an integrated flow guide shell, belongs to the field of water pump parts, and solves the problem that blades are easy to incline and misplace when being welded on the flow guide shell. The front end face of the main body is provided with gutters; blades are formed between the gutters; the shaft hole end of each blade is provided with an inclined surface; the inclined surfaces are connected with the convex wall of the shaft hole; the flow guide groove converges from the water inlet to the rear end face along the circumference. The flow guide shell has the advantages that the water guide grooves are directly lathed on the main body of the flow guide shell, so that the blades are formed among the water guide grooves, additional production lines for producing the blades are not needed, the welding procedure is omitted, the production cost is reduced, and the production period is shortened; the blades are turned out through a machine tool, belong to one part of the flow guide shell and are high in structural strength.

Description

Technical Field

[0001] The utility model belongs to the field of water pump parts and relates to a guide shell, in particular to an integrated guide shell. Background Art

[0002] The guide casing is an important component in submersible pumps and deep well pumps. It is usually installed between impellers to change the flow direction of the liquid outflowing from the impeller outlet and transport it to the inlet of the next stage impeller or the outlet of the pump.

[0003] The existing guide shell is formed by welding the blades and impeller blades to the shell by welding. Since the gap between the impeller blades and the impeller teeth and the shell is too narrow, the impeller teeth are often misaligned and tilted during the welding process. When the impeller teeth are tilted, the guide loss of the guide shell will increase. During the operation, a large noise will be emitted from the guide shell. The welding efficiency is improved by increasing the gap between the welded parts, but the increased gap will increase the leakage loss of the guide shell, reduce the working efficiency of the water pump, extend the processing cycle and increase the production cost. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated guide shell with accurate processing and positioning, short production time and low cost in view of the above problems existing in the prior art.

[0005] The utility model can be implemented through the following technical scheme: an integrated guide shell, including a main body, an axial hole is opened on the main body, a water diversion groove is processed on the front end surface of the main body, blades are formed between the water diversion grooves, and an installation groove is opened at the rear end of the main body, and a guide groove is processed on the bottom of the installation groove.

[0006] In the above-mentioned integrated guide shell, the blade is provided with an inclined surface at the end of the shaft hole.

[0007] In the above-mentioned integrated flow guide shell, a water inlet is provided between the flow guide groove and the water inlet groove.

[0008] In the above-mentioned integrated guide shell, the guide groove gradually converges along the circumference from the water inlet to the rear end surface.

[0009] In the above-mentioned integrated guide shell, a convex wall is provided on the outer side of the axial hole, the convex wall is integrated with the inclined surface, and the height of the convex wall is the same as the lowest point of the inclined surface.

[0010] Compared with the prior art, the advantages of the utility model are that the shell and the main body are integrally processed and formed, and then the shaft hole, the water diversion groove and the guide groove are processed by removing metal, blades are formed between the water diversion grooves, and a water inlet is opened between the water diversion groove and the guide groove. Since it is formed by cutting, the structural strength is high, the production process is reduced, the processing cost is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the integrated guide shell;

[0012] Figure 2 It is a cross-sectional view of the one-piece guide shell;

[0013] Figure 3 It is a bottom view of the integrated guide shell;

[0014] Among them, 1. main body; 11. front end face; 12. rear end face; 2. axial hole; 21. convex wall; 3. water diversion groove; 31. blades; 311. inclined surface; 4. installation groove; 41. guide groove; 5. water inlet. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0016] like Figures 1 to 3 As shown, the utility model can be implemented through the following embodiments: an integrated guide shell includes a main body 1, an axial hole 2 is opened on the main body 1, a water diversion groove 3 is processed on the front end surface 11 of the main body 1, blades 31 are formed between the water diversion grooves 3, and an installation groove 4 is opened on the rear end surface 12 of the main body 1, and a guide groove 41 is processed on the bottom of the installation groove 4.

[0017] The water diversion groove 3 is formed on the main body 1 by cutting away metal. Since the water diversion groove 3 is formed, the blades 31 are formed, and there is no need to process the blades 31 on an additional production line and weld the blades 31 to the guide shell; the installation groove 4 and the shaft hole 2 are opened for installing an impeller; the guide groove 41 is used to guide the water flow thrown out by the impeller into the water diversion groove 3.

[0018] like Figure 1 and Figure 2 As shown, the blade 31 is provided with an inclined surface 311 at the end of the shaft hole 2. The blade 31 is used to guide the water flow, and the opening of the inclined surface 311 facilitates the water flow to be led out of the water guide groove 3.

[0019] like Figures 1 to 3 As shown, a water inlet 5 is provided between the guide groove 41 and the water diversion groove 3. The water inlet 5 is used to guide the water flow from the guide groove 41 into the water diversion groove 3.

[0020] like Figure 2 and Figure 3 As shown, the guide groove 41 converges from the water inlet 5 along the circumference to the rear end face 12. The guide groove 41 converges along the circumference to the rear end face 12 to facilitate the diversion to the water diversion groove 3 along the flow direction of the water flow, prevent the water flow from colliding with the guide shell to generate bubbles and form erosion, and reduce the load of the impeller.

[0021] like Figure 1 to Figure 2 As shown, a convex wall 21 is provided on the outside of the shaft hole 2, the convex wall 21 is integrated with the inclined surface 311, and the height of the convex wall 21 is the same as the lowest point of the inclined surface 311. The convex wall 21 is provided to support the rotating shaft passing through the shaft hole 2 to prevent the shaft from jumping too much when rotating and causing the shaft hole 2 to crack. The convex wall 21 is integrated with the inclined surface 311 and the height of the convex wall 21 is the same as the lowest point of the inclined surface 311, so as to facilitate guiding the water flow to flow out from the inclined surface 311.

[0022] The working principle of the utility model is as follows: after the guide shell body 1 is produced, the water diversion groove 3 is processed on the front end face 11 of the main body 1 by a machine tool, and blades 31 are formed between the water diversion grooves 3. The remaining main body 1 is processed into a guide groove 41 on the rear end face 12, and a water inlet 5 is opened between the guide groove 41 and the water diversion groove 3. After the impeller outputs the water flow to the guide shell, the water flow flows in from the guide groove 41, passes through the water inlet 5, and then enters the water diversion groove 3, and the water diversion groove 3 guides the water flow to be output.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An integrated flow guide shell, comprising a main body (1), wherein the main body (1) is provided with an axial hole (2), characterized in that: The front end surface (11) of the main body (1) is processed with a water diversion groove (3), blades (31) are formed between the water diversion grooves (3), and the rear end surface (12) of the main body (1) is provided with a mounting groove (4), and the bottom of the mounting groove (4) is processed with a guide groove (41).

2. The integrated flow guide shell according to claim 1, characterized in that: The blade (31) is provided with an inclined surface (311) at the end of the shaft hole (2).

3. The integrated guide shell according to claim 1, characterized in that: A water inlet (5) is provided between the guide groove (41) and the water diversion groove (3).

4. The integrated guide shell according to claim 1, characterized in that: The guide groove (41) gradually converges from the water inlet (5) (5) along the circumference toward the rear end surface (12).

5. The integrated guide shell according to claim 1, characterized in that: A convex wall (21) is provided on the outer side of the shaft hole (2), the convex wall (21) and the inclined surface (311) are integrated, and the height of the convex wall (21) is the same as the lowest point of the inclined surface (311).

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