A lost foam casting of impeller blades for a ring pump

Abstract

This utility model relates to the field of lost foam casting technology for impellers, and discloses a lost foam casting of a ring pump impeller blade, including a disc, a notch in the middle of the disc, a column in the upper middle of the disc, an open ring fixedly connected to the lower middle of the column, the lower end of the open ring being embedded in the notch, a first mounting groove on the outside of the column, a second mounting groove on the upper side of the disc, and a blade body on the upper side of the disc outside the column, the lower end of the blade body being embedded in the second mounting groove. In this utility model, the assembly of the disc, column, and blade body facilitates storage, avoiding problems such as large volume, inconvenience in storage, and deformation during storage, thus preventing any impact on the casting precision of the ring pump impeller blade. The reinforcing strip increases the strength of the blade body, thereby preventing deformation and improving the casting precision of the ring pump impeller blade.

Description

Technical Field

[0001] This utility model relates to the field of lost foam casting technology for impellers, and in particular to a lost foam casting of impeller blades for a ring pump. Background Technology

[0002] As a core component of fluid machinery, the manufacturing process of ring pump impellers has evolved from traditional sand casting to modern precision forming technology. With the development of industrial equipment towards higher efficiency and lighter weight, impeller structures are becoming increasingly complex, and the requirements for manufacturing precision and performance are constantly increasing.

[0003] Existing ring pump impeller blades are prone to deformation due to external forces during the storage and sand burying process, which affects the geometric accuracy of the final casting. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lost foam casting for ring pump impeller blades, which can prevent the lost foam from being easily deformed by external forces during storage and sand burying, thus affecting the geometric accuracy of the final casting.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A lost foam casting of a ring pump impeller blade includes a disc, a notch in the center of the disc, a column in the upper center of the disc, an open ring fixedly connected to the lower center of the column, the lower end of the open ring being embedded in the notch, a first mounting groove on the outside of the column, a second mounting groove on the upper side of the disc, a blade body on the upper side of the disc outside the column, the lower end of the blade body being embedded in the second mounting groove, and a retaining strip fixedly connected to the end of the blade body, the outer wall of the retaining strip being embedded in the first mounting groove.

[0007] Furthermore, the positions of the first mounting slot and the second mounting slot correspond to each other.

[0008] Furthermore, both the left and right ends of the disk and the cylinder are provided with first through holes.

[0009] Furthermore, a second through hole is provided in the middle of the column.

[0010] Furthermore, a first through hole is provided in the middle of the disk on the outer side of the bayonet.

[0011] Furthermore, a positioning pin is fixedly connected to the lower side of the column, and the lower end of the positioning pin passes through the interior of the positioning hole.

[0012] Furthermore, reinforcing strips for increasing strength are fixedly connected to both sides of the blade body.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the assembly of the disc, column and blade body can facilitate storage and avoid the problems of large size, inconvenience in storage, and easy deformation during storage, thereby avoiding affecting the casting precision of the ring pump impeller blade.

[0015] 2. In this utility model, the reinforcing strip can increase the strength of the blade body, thereby preventing deformation of the blade body and thus avoiding deformation during the casting process to a certain extent, thereby improving the casting accuracy of the ring pump impeller blade. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of a lost foam casting of a ring pump impeller blade proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of a disc-shaped lost foam casting of a ring pump impeller blade according to the present invention.

[0018] Figure 3 This is a schematic diagram of a column of a lost foam casting of a ring pump impeller blade proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the blade body of a lost foam casting of a ring pump impeller blade proposed in this utility model.

[0020] Legend:

[0021] 1. Disc; 2. Bayonet; 3. Column; 4. Opening ring; 5. First mounting groove; 6. Second mounting groove; 7. Blade body; 8. Locking strip; 9. First through hole; 10. Second through hole; 11. Positioning hole; 12. Positioning pin; 13. Reinforcing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a lost foam casting of a ring pump impeller blade, comprising a disc 1, a notch 2 in the center of the disc 1, a column 3 in the upper center of the disc 1, an open ring 4 fixedly connected to the lower center of the column 3, the lower end of the open ring 4 being embedded inside the notch 2, a first mounting groove 5 on the outside of the column 3, a second mounting groove 6 on the upper side of the disc 1, and a blade body 7 on the upper side of the disc 1 outside the column 3, the lower end of the blade body 7 being embedded inside the second mounting groove 6. A retaining strip 8 is fixedly connected to the end of the main body 7. The outer wall of the retaining strip 8 is embedded in the first mounting groove 5. The positions of the first mounting groove 5 and the second mounting groove 6 are corresponding. The left and right ends of the disc 1 and the column 3 are provided with first through holes 9. The middle part of the column 3 is provided with a second through hole 10. The middle part of the disc 1 is located outside the bayonet 2 and is provided with a first through hole 9. A positioning pin 12 is fixedly connected to the lower side of the column 3. The lower end of the positioning pin 12 passes through the positioning hole 11. Reinforcing strips 13 for increasing strength are fixedly connected to both sides of the blade body 7.

[0024] Reference Figure 2 The column 3 is vertically installed at the center of the upper surface of the disk 1. Radial positioning is achieved by the engagement of the open ring 4 and the bayonet 2. At the same time, the positioning pin 12 is inserted into the positioning hole 11 of the disk 1 to ensure that the column 3 and the disk 1 are aligned axially and circumferentially, and to improve the stability of the installation. The retaining strip 8 of the blade body 7 is inserted into the first mounting groove 5 of the column 3 from top to bottom. At the same time, the lower end of the blade body 7 is embedded into the second mounting groove 6 of the disk 1. The reinforcing strips 13 on both sides of the blade body 7 serve as reinforcing ribs during the casting process to ensure that the blade surface tolerance meets the design requirements and improve the casting accuracy of the impeller. The disk 1, column 3 and blade body 7 can be stored separately, which significantly reduces the storage space occupied and avoids stress deformation of the entire impeller due to long-term stacking, thus ensuring the dimensional stability of the casting from the source.

[0025] Working principle: During casting, the column 3 is installed on the upper side of the disc 1, so that the open ring 4 fits with the inner wall of the bayonet 2. At the same time, the positioning pin 12 is inserted into the positioning hole 11, and the column 3 is installed in the middle of the upper side of the disc 1, so that the first mounting groove 5 corresponds to the second mounting groove 6. Then, the retaining strip 8 is inserted into the interior of the first mounting groove 5 from the top of the column 3, thereby installing the blade body 7 on the outside of the column 3, and embedding the lower end of the blade body 7 into the interior of the second mounting groove 6, thus completing the installation of the blade body 7. Then, the ring pump impeller blade is cast. The reinforcing strip 13 can increase the strength of the blade body 7 and prevent the blade body 7 from deforming to a certain extent.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An expendable pattern casting of a ring pump impeller blade, characterized by, The device includes a disc (1), a slot (2) in the middle of the disc (1), a column (3) in the middle of the upper side of the disc (1), an open ring (4) fixedly connected to the middle of the lower side of the column (3), the lower end of the open ring (4) being embedded in the slot (2), a first mounting groove (5) in the outer side of the column (3), a second mounting groove (6) in the upper side of the disc (1), a blade body (7) in the upper side of the disc (1) located outside the column (3), the lower end of the blade body (7) being embedded in the second mounting groove (6), and a locking strip (8) fixedly connected to the end of the blade body (7), the outer wall of the locking strip (8) being embedded in the first mounting groove (5).

2. An expendable pattern casting of a ring pump impeller blade according to claim 1, characterized in that: The first mounting slot (5) and the second mounting slot (6) are positioned opposite each other.

3. The lost foam casting of a ring pump impeller blade according to claim 1, characterized in that: Both the left and right ends of the disk (1) and the column (3) are provided with first through holes (9).

4. The lost foam casting of a ring pump impeller blade according to claim 1, characterized in that: A second through hole (10) is provided in the middle of the column (3).

5. The lost foam casting of a ring pump impeller blade according to claim 1, characterized in that: The center of the disk (1) is provided with a first through hole (9) located outside the bayonet (2).

6. The lost foam casting of a ring pump impeller blade according to claim 1, characterized in that: A positioning pin (12) is fixedly connected to the lower side of the column (3), and the lower end of the positioning pin (12) passes through the inside of the positioning hole (11).

7. The lost foam casting of a ring pump impeller blade according to claim 1, characterized in that: Both sides of the blade body (7) are fixedly connected with reinforcing strips (13) to increase strength.

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