CN-121972612-A - Mould for forming ceramic corrosion-resistant slurry pump impeller and manufacturing method thereof

CN121972612ACN 121972612 ACN121972612 ACN 121972612ACN-121972612-A

Abstract

The invention provides a die for molding a ceramic corrosion-resistant slurry pump impeller and a manufacturing method thereof, comprising a rear impeller assembly, a core assembly and a front impeller assembly, along with the sequential assembly of the rear impeller assembly, the core assembly and the front impeller assembly, the slurry is sequentially filled into the rear forming groove, the main forming groove and the front forming groove. The mold for molding the ceramic corrosion-resistant slurry pump impeller and the manufacturing method thereof provided by the invention adopt a three-section structure of the rear impeller assembly, the core assembly and the front impeller assembly, are assembled step by step and filled, solve the problems of uneven filling and insufficient filling of corners of the traditional two-piece mold, and improve the density uniformity and molding quality of a blank body. The detachable structure is convenient for step-by-step demolding, reduces the breakage rate of the blank body and improves the yield. The assembly can be adjusted in an adapting way, the application range is enlarged, the operation strength is reduced, and the practicability and the economy are improved. Solves the problems of uneven filling, difficult demoulding, easy damage to a blank body, poor adaptability and the like in the prior art, and provides a reliable die support.

Inventors

WU YANQING
LU CHUNQIAN
YAN LIZHI
ZHANG QIANRU
SHI CAIYUN

Assignees

石家庄工业泵厂有限公司

Dates

Publication Date: 20260505
Application Date: 20251216

Claims (10)

1. The utility model provides a mould is used in shaping of ceramic corrosion resistant sediment stuff pump impeller which characterized in that includes: A rear impeller assembly having a rear forming groove with an open top end; the core assembly is arranged at the top end of the rear impeller assembly and is detachably connected with the rear impeller assembly, the core assembly is provided with a main forming groove with the top end and the bottom end being open, and the main forming groove is communicated with the rear forming groove; the front impeller assembly is provided with a front forming groove with an open bottom end, the bottom end of the front impeller assembly is detachably connected with the core assembly, the top end of the front forming groove is provided with a plurality of material injection openings for injecting ceramic slurry, and the rear forming groove, the main forming groove and the front forming groove jointly form an impeller forming cavity; And the slurry is filled into the rear forming groove, the main forming groove and the front forming groove in sequence along with the sequential assembly of the rear impeller assembly, the core assembly and the front impeller assembly.
2. The mold for molding the ceramic corrosion-resistant slurry pump impeller of claim 1, further comprising a prefabricated metal skeleton and skeleton fixing pieces, wherein the prefabricated metal skeleton is arranged in the rear molding groove, the prefabricated metal skeleton is provided with a plurality of reinforcing rods, the reinforcing rods are annularly arranged at intervals along the central axis of the impeller molding cavity, the skeleton fixing pieces are abutted to the bottom of the rear impeller assembly, the skeleton fixing pieces are provided with connecting ends which extend upwards along the vertical direction, and the connecting ends penetrate through the rear impeller assembly and extend into the rear molding groove, and are detachably connected with the prefabricated metal skeleton; Wherein, be equipped with on the back impeller subassembly and supply the connecting end of skeleton mounting runs through the connecting hole.
3. The mold for molding the ceramic corrosion-resistant slurry pump impeller according to claim 2, wherein the prefabricated metal skeleton is in threaded connection with the skeleton fixing member, a threaded hole is formed in the prefabricated metal skeleton, and an external thread connected with the threaded hole is formed in a connecting end of the skeleton fixing member.
4. The mold for molding a ceramic corrosion resistant slurry pump impeller of claim 2, wherein said rear impeller assembly comprises: The rear impeller main die is provided with a rear impeller end face forming groove, the rear impeller main die is provided with the connecting hole, and a prefabricated groove for installing the prefabricated metal skeleton is arranged in the forming groove; The back impeller auxiliary die is provided with a back impeller side wall forming groove, and the back impeller side wall forming groove and the back impeller end face forming groove jointly form the back forming groove; The side wall of the rear impeller main die is provided with a plurality of first fastening blocks, each first fastening block is annularly arranged at intervals along the central axis of the impeller forming cavity, and each first fastening block is provided with a first fastening groove which is communicated in the vertical direction and is radially opened along the central axis of the impeller forming cavity; the side wall of the rear impeller auxiliary die is provided with a plurality of second fastening blocks, the second fastening blocks are annularly arranged at intervals along the central axis of the impeller forming cavity, and each second fastening block is provided with a second fastening groove which penetrates in the vertical direction and is open along the radial direction of the central axis of the impeller forming cavity.
5. The mold for molding a ceramic corrosion resistant slurry pump impeller of claim 4, wherein said core assembly comprises: a core mold having the main molding groove; The core connecting ring is sleeved outside the core die; The core connecting ring is characterized in that a plurality of third fastening blocks are arranged on the side wall of the core connecting ring, the third fastening blocks are annularly arranged at intervals along the central axis of the impeller forming cavity, and third fastening grooves which penetrate in the vertical direction and are open in the radial direction along the central axis of the impeller forming cavity are formed in the third fastening blocks.
6. The mold for molding a ceramic corrosion resistant slurry pump impeller of claim 5, wherein said front impeller assembly comprises: The front impeller main die is provided with a front impeller end face forming groove, the top end of the front impeller main die is provided with a plurality of filling holes, and the filling holes are annularly arranged at intervals along the central axis of the impeller forming cavity; the front She Lunfu die is provided with a front impeller side wall forming groove, and the front impeller side wall forming groove and the front impeller end face forming groove jointly form the front forming groove; The side wall of the front impeller main die is provided with a plurality of fourth fastening blocks, each fourth fastening block is annularly arranged at intervals along the central axis of the impeller forming cavity, and each fourth fastening block is provided with a fourth fastening groove which is communicated in the vertical direction and is radially opened along the central axis of the impeller forming cavity; The side wall of the front impeller auxiliary die is provided with a plurality of fifth fastening blocks, the fifth fastening blocks are annularly arranged at intervals along the central axis of the impeller forming cavity, and each fifth fastening block is provided with a fifth fastening groove which penetrates in the vertical direction and is open along the radial direction of the central axis of the impeller forming cavity.
7. The mold for forming a ceramic corrosion resistant slurry pump impeller of claim 6, further comprising a plurality of connection assemblies, each of said connection assemblies being disposed in annular spaced relation along a central axis of said impeller forming cavity, each of said connection assemblies being adapted to connect said rear impeller assembly, said core assembly and said front impeller assembly, each of said connection assemblies comprising: The connecting screw rod is detachably connected in the first fastening groove, the second fastening groove, the third fastening groove, the fourth fastening groove and the fifth fastening groove, the connecting screw rod is provided with a nut part and a screw rod part, the top end of the nut part is abutted against the bottom end of the first fastening groove, the bottom end of the screw rod part is integrally connected with the nut part, and the screw rod part can be arranged in the first fastening groove, the second fastening groove, the third fastening groove, the fourth fastening groove and the fifth fastening groove; The connecting nut is in threaded connection with the corresponding screw rod part, and the bottom end of the connecting nut is abutted to the top end of the corresponding fifth fastening groove.
8. The mold for molding ceramic corrosion-resistant slurry pump impellers of claim 6, wherein the side walls of the rear impeller main mold, the rear She Lunfu mold, the core connecting ring, the front impeller main mold and the front She Lunfu mold are provided with hoisting blocks.
9. The mold for molding the ceramic corrosion-resistant slurry pump impeller according to claim 6, wherein a plurality of blocking plates are arranged on the front impeller main mold, and each blocking plate is arranged in one-to-one correspondence with each filler hole.
10. The method for manufacturing the mold for molding the ceramic corrosion-resistant slurry pump impeller according to claim 7, comprising the steps of: S100, preparing a mould, preheating the mould at 40-60 ℃, and cleaning and brushing a special release agent on the mould; S200, assembling a rear impeller assembly, namely assembling the rear impeller main die and the rear impeller auxiliary die, connecting the rear impeller main die and the rear She Lunfu die through the connecting assembly, installing the prefabricated metal framework and the framework fixing piece on the rear impeller auxiliary die, and placing the rear impeller main die, the rear She Lunfu die, the prefabricated metal framework and the framework fixing piece on a vibration supply unit; s300, filling the ceramic slurry into the post-forming groove for one time, and opening a vibration supply unit; S400, assembling a core assembly, namely combining the core die with the core connecting ring, assembling the core die with the rear impeller auxiliary die, and connecting the core connecting ring, the rear She Lunfu die and the rear impeller main die through connecting assemblies; s500, secondary filling, namely filling ceramic slurry into the main forming groove, and opening a vibration supply unit; s600, assembling a front impeller assembly, namely combining the front impeller main die with a front impeller auxiliary die, assembling the front impeller main die with the core connecting ring, and connecting the front She Lunfu die, the front impeller main die, the core connecting ring, the rear She Lunfu die and the rear impeller main die through connecting assemblies; and S700, filling ceramic slurry into the front forming groove for three times, opening a vibration supply unit, and then moving the die into a heating furnace for heating and curing treatment.

Description

Mould for forming ceramic corrosion-resistant slurry pump impeller and manufacturing method thereof Technical Field The invention belongs to the technical field of slurry pump impeller molding, and particularly relates to a mold for molding a ceramic corrosion-resistant slurry pump impeller and a manufacturing method thereof. Background The slurry pump is widely applied to industries such as mines, metallurgy, electric power, chemical industry and the like and is used for conveying corrosive media containing solid particles. The impeller is used as a core component of the slurry pump, and the performance of the impeller directly influences the efficiency and the service life of the pump. The traditional metal impeller is mostly made of metal materials, but when highly corrosive slurry is treated, the metal impeller is easy to corrode, so that the performance is reduced, and the service life is shortened. Ceramic materials become ideal choices for manufacturing slurry pump impellers because of their excellent wear resistance, corrosion resistance and high temperature resistance. In the prior art, in the manufacturing process of the ceramic impeller, a double-plate mode mold is generally adopted for material injection firing, but the traditional two-plate mold manufacturing process has the problems of uneven filling, difficult demolding, easy damage of a blank body and the like, and the quality and the production cost of the ceramic impeller are affected, so that the adaptability and the practicability are poor. Disclosure of Invention The embodiment of the invention provides a mold for molding a ceramic corrosion-resistant slurry pump impeller and a manufacturing method thereof, and aims to solve the problems of poor adaptability and poor practicability caused by uneven filling and difficult demolding in the existing mold manufacturing process. In order to achieve the purpose, the technical scheme adopted by the invention is that a die for forming the ceramic corrosion-resistant slurry pump impeller and a manufacturing method thereof are provided, and the die comprises the following steps: A rear impeller assembly having a rear forming groove with an open top end; the core assembly is arranged at the top end of the rear impeller assembly and is detachably connected with the rear impeller assembly, the core assembly is provided with a main forming groove with the top end and the bottom end being open, and the main forming groove is communicated with the rear forming groove; the front impeller assembly is provided with a front forming groove with an open bottom end, the bottom end of the front impeller assembly is detachably connected with the core assembly, the top end of the front forming groove is provided with a plurality of material injection openings for injecting ceramic slurry, and the rear forming groove, the main forming groove and the front forming groove jointly form an impeller forming cavity; And the slurry is filled into the rear forming groove, the main forming groove and the front forming groove in sequence along with the sequential assembly of the rear impeller assembly, the core assembly and the front impeller assembly. In one possible implementation manner, the mold for molding the ceramic corrosion-resistant slurry pump impeller further comprises a prefabricated metal framework and a framework fixing piece, wherein the prefabricated metal framework is arranged in the rear molding groove, the prefabricated metal framework is provided with a plurality of reinforcing rods, and the reinforcing rods are annularly arranged at intervals along the central axis of the impeller molding cavity; Wherein, be equipped with on the back impeller subassembly and supply the connecting end of skeleton mounting runs through the connecting hole. In one possible implementation manner, the prefabricated metal skeleton is in threaded connection with the skeleton fixing piece, a threaded hole is formed in the prefabricated metal skeleton, and an external thread connected with the threaded hole is arranged on the connecting end of the skeleton fixing piece. In one possible implementation, the rear impeller assembly includes: The rear impeller main die is provided with a rear impeller end face forming groove, the rear impeller main die is provided with the connecting hole, and a prefabricated groove for installing the prefabricated metal skeleton is arranged in the forming groove; The back impeller auxiliary die is provided with a back impeller side wall forming groove, and the back impeller side wall forming groove and the back impeller end face forming groove jointly form the back forming groove; The side wall of the rear impeller main die is provided with a plurality of first fastening blocks, each first fastening block is annularly arranged at intervals along the central axis of the impeller forming cavity, and each first fastening block is provided with a first fastening groove which is communicated in the vert