CN211636072U

CN211636072U - Stirring paddle for casting coating

Info

Publication number: CN211636072U
Application number: CN201922307364.5U
Authority: CN
Inventors: 邬苏焕; 丁芳
Original assignee: Shanghai Bangju Engineering Materials Technology Co ltd
Current assignee: Shanghai Bangju Engineering Materials Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-09
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to the technical field of stirring paddles, and discloses a stirring paddle for casting a formed coating, which comprises a hub and a plurality of blades fixed on the hub, wherein the blades are distributed around the hub in a divergent shape; each blade comprises a pipe fitting, and the inside and the outside of each pipe fitting are cast and formed with coatings; and casting drainage holes are formed in the pipe fitting and the hub. Use the technical scheme of the utility model, wheel hub and pipe fitting equipment form out the skeleton of stirring rake (wheel hub and pipe fitting promptly), and the skeleton preparation is convenient feasible. The framework is in a mutually-communicated coupling state through the casting drainage holes. The coating material can be cast and molded at one time, so that the binding force of the coating material solidified on the surface of the framework is ensured, the risks of cracking and tearing of the coating are reduced, and the service life of the coating is prolonged. In the casting molding process, the cured coating has smoother surface and high dimensional consistency due to the good fluid property of the coating material.

Description

Stirring paddle for casting coating

Technical Field

The utility model relates to a stirring rake technical field especially relates to a stirring rake of casting shaping coating.

Background

The ceramic composite material compounded by high molecular materials (epoxy resin, vinyl resin, phenolic resin, acrylic resin and the like) and ceramic particle powder (silicon carbide, aluminum oxide, silicon dioxide and the like) and the elastic thermoplastic coating materials such as polyurethane, high-density polyethylene, polytetrafluoroethylene, nylon and the like are widely applied to the fields of wear resistance and corrosion resistance of industrial equipment, and have the functions of corrosion resistance and wear resistance. The coating on the blade of the existing industrial stirring paddle is formed by adding a coating (ceramic composite material coating) on the surface of the original metal stirring paddle, and adhering and coating the coating on the surface of a base material by virtue of adhesive force. When the stirring paddle rotates at a high speed, the paddle is stressed and can generate plastic deformation. The coating on the blade is easy to crack and damage and even separate from the base material, so that the wear resistance of the blade is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a casting shaping coated stirring rake to solve above-mentioned technical problem among the prior art.

In order to realize the purpose, the utility model discloses a technical scheme be:

a stirring paddle for casting a formed coating comprises a hub and a plurality of blades fixed on the hub, wherein the blades are distributed around the hub in a divergent manner; each blade comprises a pipe fitting, and the inside and the outside of each pipe fitting are cast and formed with coatings; and casting drainage holes are formed in the pipe fitting and the hub.

According to the utility model discloses a stirring rake of cast moulding coating, equal fixedly connected with stationary blade between wheel hub and every paddle.

According to the utility model discloses a stirring rake of cast moulding coating, all set up the screw hole that sets up along pipe fitting length direction on fixed leaf, the wheel hub, the one end of pipe fitting corresponds the screw hole and has seted up the external screw thread to fixed leaf of threaded connection and wheel hub.

According to the utility model discloses a stirring rake of cast moulding coating, threaded connection establishes to pipe threaded connection.

According to the utility model discloses a stirring rake of cast moulding coating, the hole of dodging that the casting drainage hole supplied the pipe fitting to pass for seting up on the fixed leaf.

According to the utility model discloses a stirring rake of cast moulding coating, the through-hole of dodging the hole is run through for seting up on the stationary blade in casting drainage hole.

According to the utility model discloses a stirring rake of cast moulding coating, the mounting hole at wheel hub middle part is seted up for the casting drainage hole, and the mouth of pipe of mounting hole and pipe fitting stiff end communicates with each other, and has seted up the keyway in the mounting hole.

According to the utility model discloses a stirring rake of cast moulding coating, the cross section of coating is the rectangle.

The utility model has the advantages that:

use the technical scheme of the utility model, wheel hub and pipe fitting equipment form out the skeleton of stirring rake (wheel hub and pipe fitting promptly), and the skeleton preparation is convenient feasible. The framework is in a mutually-communicated coupling state through the casting drainage holes. The coating material can be cast and molded at one time, so that the binding force of the coating material solidified on the surface of the framework is ensured, the risks of cracking and tearing of the coating are reduced, and the service life of the coating is prolonged. In the casting molding process, the cured coating has smoother surface and high dimensional consistency due to the good fluid property of the coating material.

Drawings

Fig. 1 is a schematic structural view (top view) of a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of B-B of FIG. 2;

FIG. 4 is a schematic view (partial) taken from the direction C of FIG. 1;

reference numerals:

a hub 1,

A fixed blade 2, a through hole 21, a threaded hole 22, an avoidance hole 23,

A coating layer 3,

A pipe 4, external threads 41, a pipe orifice 42, an overhanging end orifice 43,

Paddle 5, mounting hole 6.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a stirring blade for casting a coating, including a hub 1 and a plurality of blades 5 fixed thereon, wherein the blades 5 are distributed around the hub 1 in a divergent manner; each blade 5 comprises a pipe fitting 4, and the coating 3 is cast and formed inside and outside the pipe fitting 4; and casting drainage holes are formed in the pipe fitting 4 and the hub 1.

The hub 1 and the pipe fitting 4 are assembled to form a framework (the hub 1 and the pipe fitting 4) of the stirring paddle, and the framework is convenient and feasible to manufacture. The framework is in a mutually-communicated coupling state through the casting drainage holes. The coating material is drained to the inside and outside of the framework through the casting drainage holes and is cured and formed, one-step casting forming is completed, the production efficiency is high, and the forming quality of the coating 3 is good. The coating material is selected from ceramic composite materials sold in Resto Ruisi brand.

When the blade 5 is mounted on the hub 1, the plane of the blade 5 is typically inclined at an angle, for example 30 degrees, with respect to the horizontal plane (or the end face of the hub 1). As shown in fig. 3 and 4.

And a fixed blade 2 is fixedly connected between the hub 1 and each blade 5.

The number of the blades 5, the fixed blades 2, and the pipe 4 is generally 4. In addition, the hub 1 and the fixed blade 2 are fixedly connected together by welding, and the materials of the hub and the fixed blade are the same, and the hub and the fixed blade can be one of 201 stainless steel, 304 stainless steel, 316L stainless steel, 2205 duplex stainless steel, 2507 duplex stainless steel, Cr26 alloy steel and Cr30 alloy steel.

The pipe 4 is a hollow pipe with a wall thickness of 1mm to 4mm and an internal diameter of 5mm to 15 mm. The pipe 4 is made of the same material as the hub 1.

All set up the screw hole 22 that sets up along 4 length direction of pipe fittings on fixed leaf 2, the wheel hub 1, the one end of pipe fitting 4 corresponds screw hole 22 and has seted up external screw thread 41 to fixed leaf 2 of threaded connection and wheel hub 1.

The threaded connection is a pipe threaded connection.

The threaded holes 22 are opened in 4 numbers corresponding to the number of the blades.

The casting drainage hole is an avoiding hole 23 which is formed in the fixed blade 2 and through which the pipe fitting 4 penetrates, and the avoiding hole 23 and the threaded hole 22 are coaxially arranged.

The casting drainage hole is the through-hole 21 that sets up on fixed leaf 2 and run through fixed leaf 2 blade surface and dodge hole 23.

The through-hole 21 is generally provided perpendicular to the surface of the fixed blade 2, penetrating both surfaces thereof. Each fixed blade 2 is provided with the through hole 21, and the inner diameter of the through hole is between 5mm and 20 mm.

The casting drainage hole is a mounting hole 6 formed in the middle of the hub 1, the mounting hole 6 is communicated with a pipe fitting pipe orifice 42 at the fixed end of the pipe fitting 4, a key groove is formed in the mounting hole 6, and the key groove is used for being connected with a shaft. The nozzle 42 and the mounting hole 6 are formed as a casting drainage hole. In addition, the overhanging end nozzle 43 of the tube 4 is also shaped as a cast drain hole.

The cross section of the coating 3 is rectangular and is flat.

This stirring rake of casting shaping coating, wheel hub 1, pipe fitting 4 equipment are the skeleton, play the effect of supporting coating 3, are the substrate of coating 3. The coating material is injected from the pipe orifice 42 of the hub 1, filled in the pipe 4, flows out from the pipe orifice 43 of the extending end, and wraps the outer wall of the pipe 4, and then flows through the avoiding holes 23 and the through holes 21 to wrap the inner wall and the outer wall of the pipe 4 completely. The coating material can be cured and formed after a certain time.

The method for casting and molding the coating by the stirring paddle comprises the following steps:

the first step is as follows: framework for manufacturing stirring paddle

The hub 1 can be obtained by precision machining after casting or commercial bar stock. The fixed blade 2 is obtained by cutting a casting piece or a commercially available steel plate, and a through hole 21 is punched. The pipe 4 can be obtained by post-machining the external thread 41 using a commercially available steel pipe.

The fixed blade 2 is welded to the hub 1 and a threaded hole 22 is punched and machined. The plurality of pipes 4 are screwed into the plurality of threaded holes 22 in sequence to be fixed.

To the surface of wheel hub 1, fixed leaf 2 surfaces, sand blasting is done to the surface of pipe fitting 4, and roughness reaches 50um to 100um, improves coating 3's cohesion.

The second step is that: injection coating material

The framework formed by the hub 1, the fixed blades 2 and the pipe fitting 4 is placed in a prefabricated mold inner cavity, and the inner cavity of the mold is matched with the framework. The die can be manufactured by processing a conventional aluminum or steel die and can be designed into a parting mode of opening and closing up and down. The manufacturing process of the mold is not detailed in the patent application and can be achieved by the conventional mold manufacturing process.

The surface of the inner cavity of the die is coated with a silicon oil type release agent in advance.

When the coating material is in a liquid state, the coating material is injected into the pipe 4 from the pipe orifice 42 of the hub 1 through the screw pump, flows out from the pipe orifice 43 of the extending end after being filled with the coating material, covers and wraps the outer wall of the pipe 4, and then enters the through hole 21 through the avoiding hole 23.

The coating material becomes a solid state after being solidified by chemical reaction or cooled and solidified, and the mould is dismantled, so that the stirring paddle demoulding product with the coating 3 is obtained.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A stirring paddle for casting a formed coating comprises a hub and a plurality of blades fixed on the hub, wherein the blades are distributed around the hub in a divergent manner; the paddle is characterized in that each paddle comprises a pipe fitting, and the inside and the outside of each pipe fitting are cast and formed with coatings; and casting drainage holes are formed in the pipe fitting and the hub.

2. The stirring paddle according to claim 1, wherein a fixed blade is fixedly connected between the hub and each blade.

3. The stirring paddle for casting the formed coating according to claim 2, wherein the fixed blade and the hub are both provided with threaded holes arranged along the length direction of the pipe fitting, and one end of the pipe fitting is provided with external threads corresponding to the threaded holes and is in threaded connection with the fixed blade and the hub.

4. The cast coated mixing paddle of claim 3 wherein the threaded connection is a pipe threaded connection.

5. The stirring paddle according to claim 3 or 4, wherein the casting drainage hole is an avoiding hole formed in the fixed blade for the pipe fitting to pass through.

6. The stirring paddle for casting the formed coating according to claim 5, wherein the casting drainage hole is a through hole formed in the fixed blade and penetrating through the avoidance hole.

7. The stirring paddle for casting the formed coating according to claim 1, wherein the casting drainage hole is a mounting hole formed in the middle of the hub, the mounting hole is communicated with a pipe orifice at the fixed end of the pipe fitting, and a key groove is formed in the mounting hole.

8. The paddle of claim 1 wherein the coating is rectangular in cross-section.