Ceramic pump cover punch forming die

Abstract

The utility model relates to a kind of ceramic pump cover punch forming die, including annular sleeve (4), the base (6) of installing on the right end surface of annular sleeve (4), the mandrel (2) of installing in the middle part of base (6), annular pressing plate (3) slidingly embedded between mandrel (2) and annular sleeve (4);The annular pressing plate (3), annular sleeve (4), base (6) and mandrel (2) are enclosed to form the cavity (5) of pump cover.The ceramic pump cover punch forming die of the utility model, overall use component is few, simple structure, dismounting is simple and convenient, can batch stamping production pump cover ceramic blank, improve the production efficiency of pump cover ceramic blank, and then improve the overall production efficiency of ceramic centrifugal pump.

Description

Technical Field

[0001] This utility model relates to a ceramic pump cover stamping mold, belonging to the technical field of ceramic centrifugal pump production equipment. Background Technology

[0002] Ceramic centrifugal pumps significantly extend the service life of their main flow components—such as the front pump cover, impeller, pump body, and rear pump cover—by replacing the original metal material with wear-resistant and corrosion-resistant ceramic. This improvement is achieved by utilizing the excellent corrosion and wear resistance of ceramic. Specifically, the ceramic pump cover (including the front and rear covers) is formed by injecting liquid ceramic slurry into a mold with a pump cover cavity to create a ceramic blank, which is then sintered at high temperature. Currently, the production efficiency of pump cover ceramic blanks using casting molding is relatively low, making it unsuitable for mass production and impacting the overall production efficiency of ceramic centrifugal pumps. Therefore, there is an urgent need for a high-efficiency pump cover ceramic blank forming equipment suitable for mass production to improve the overall production efficiency of ceramic centrifugal pumps. Summary of the Invention

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a ceramic pump cover stamping mold. The stamping mold can be used to mass-produce pump cover ceramic blanks, thereby improving the production efficiency of pump cover ceramic blanks and thus improving the overall production efficiency of ceramic centrifugal pumps.

[0004] The purpose of this utility model is achieved as follows:

[0005] A ceramic pump cover stamping mold includes an annular sleeve, a base mounted on the right end face of the annular sleeve, a mandrel mounted in the middle of the base, and an annular pressure plate slidably embedded between the mandrel and the annular sleeve; the annular pressure plate, the annular sleeve, the base, and the mandrel enclose and form a cavity for the pump cover.

[0006] Furthermore, a conical through hole is provided at the center of the base, and an end cap is installed on the right end face of the through hole. The mandrel is fixedly installed at the center of the end cap, and the conical part of the mandrel is embedded in the through hole.

[0007] Furthermore, the right end face of the end cap and the through hole is provided with a first circular step for proper alignment.

[0008] Furthermore, the end cap is connected to the base and the spindle respectively by bolts.

[0009] Furthermore, the end cap has a countersunk hole in the middle, and the right end of the mandrel is embedded in the countersunk hole.

[0010] Furthermore, the base is provided with a second circular step that aligns with the end face of the annular sleeve.

[0011] Furthermore, lifting handles are installed on the left end face of the annular sleeve and the left end of the mandrel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The ceramic pump cover stamping mold of this utility model utilizes the cavity structure formed between the mandrel, annular sleeve and base to form the pump cover. The overall part is small, the structure is simple and easy to assemble and disassemble, which facilitates the mass production of pump cover ceramic blanks, improves the production efficiency of pump cover ceramic blanks, and thus improves the overall production efficiency of ceramic centrifugal pumps. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a ceramic pump cover stamping mold according to the present invention.

[0015] Figure 2 This is a schematic diagram of the end cap installation structure of a ceramic pump cover stamping mold according to the present invention.

[0016] in:

[0017] 1. Lifting handle; 2. Mandrel; 3. Annular pressure plate; 4. Annular sleeve; 5. Cavity; 6. Base; 7. First circular step; 8. Bolt; 9. End cap; 10. Countersunk hole; 11. Second circular step. Detailed Implementation

[0018] See Figures 1-2 This utility model relates to a ceramic pump cover stamping mold, comprising an annular sleeve 4, a base 6 mounted on the right end face of the annular sleeve 4 by bolts 8, a mandrel 2 mounted in the middle of the base 6, and an annular pressure plate 3 slidably embedded between the mandrel 2 and the annular sleeve 4; the base 6 is provided with a second circular step 11 that mates with the end face of the annular sleeve 4 to facilitate the mating and installation between the base 6 and the annular sleeve 4; both the left end face of the annular sleeve 4 and the left end of the mandrel 2 are equipped with lifting handles 1 to facilitate the lifting of the mold;

[0019] The pump cover of a centrifugal pump includes a front pump cover and a rear pump cover. The two are similar in shape and structure, both including a circular ring part and a conical ring part that are smoothly connected by a transition zone.

[0020] The base 6 has a conical through hole at its center. An end cap 9 is installed on the right end face of the through hole by bolts 8. The mandrel 2 is fixed to the center of the end cap 9 by bolts 8. Specifically, the end cap 9 has a countersunk hole 10 in the middle. The right end of the mandrel 2 is embedded in the countersunk hole 10 to facilitate the assembly and installation of the mandrel 2. The right end face of the end cap 9 and the conical through hole is provided with a first circular step 7 for matching and alignment to facilitate the installation of the end cap 9 and the base 6. The conical part of the mandrel 2 is embedded in the conical through hole, and it forms the conical ring part of the pump cover cavity with the conical through hole. The annular pressure plate 3, the annular sleeve 4, the base 6 and the other parts of the mandrel 2 surround and form the annular part of the pump cover cavity 5 and the transition area connecting the annular part and the conical ring part.

[0021] When stamping a ceramic pump cover, first assemble the annular sleeve 4, base 6, and mandrel 2 and fix them on the punch press as the lower mold. Then, install the annular pressure plate 3 on the punch head of the punch press. Place the weighed ceramic powder into the cavity 5, ensuring that the ceramic powder is spread evenly in the cavity 5. Control the punch head to drive the annular pressure plate 3 to press into the annular gap between the mandrel 2 and the annular sleeve 4, compacting the ceramic powder to form a pump cover ceramic blank. Then, remove the end cover 9, base 6, mandrel 2, and annular sleeve 4 in sequence to obtain a complete pump cover ceramic blank, which is used as preparation for the subsequent sintering process.

[0022] The ceramic pump cover stamping mold of this utility model utilizes the cavity structure formed between the mandrel 2, the annular sleeve 4 and the base 6 to form the pump cover. The overall structure has fewer parts and is simple. Multiple stepped structures are set between the parts to facilitate assembly and disassembly, making it easy to mass-produce pump cover ceramic blanks, improving the production efficiency of pump cover ceramic blanks, and thus improving the overall production efficiency of ceramic centrifugal pumps.

[0023] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A ceramic pump cover stamping die, characterized in that: It includes an annular sleeve (4), a base (6) mounted on the right end face of the annular sleeve (4), a spindle (2) mounted in the middle of the base (6), and an annular pressure plate (3) slidably embedded between the spindle (2) and the annular sleeve (4); the annular pressure plate (3), the annular sleeve (4), the base (6) and the spindle (2) surround to form a cavity (5) of the pump cover.

2. The ceramic pump cover stamping die according to claim 1, characterized in that: The base (6) has a conical through hole at its center. An end cap (9) is installed on the right end face of the through hole. The spindle (2) is fixed in the center of the end cap (9). The conical part of the spindle (2) is embedded in the through hole.

3. The ceramic pump cover stamping die according to claim 2, characterized in that: A first circular step (7) is provided between the end cap (9) and the right end face of the conical through hole for alignment.

4. The ceramic pump cover stamping die according to claim 2, characterized in that: The end cap (9) is connected to the base (6) and the spindle (2) respectively by bolts (8).

5. The ceramic pump cover stamping die according to claim 2, characterized in that: The end cap (9) has a countersunk hole (10) in the middle, and the right end of the mandrel (2) is embedded in the countersunk hole (10).

6. The ceramic pump cover stamping die according to claim 1, characterized in that: The base (6) is provided with a second circular step (11) that aligns with the end face of the annular sleeve (4).

7. The ceramic pump cover stamping die according to claim 1, characterized in that: Lifting handles (1) are installed on the left end face of the annular sleeve (4) and the left end of the mandrel (2).

Images