CN116753189A - Three-dimensional processed fluoroplastic impeller hub and its processing technology - Google Patents

Abstract

The invention discloses a fluoroplastic impeller hub for three-dimensional processing and a processing technology thereof, comprising a hub body and a mandrel arranged in the hub body, wherein the hub body is made of fluoroplastic, and is coated outside the mandrel and mutually connected and fixed through a fixing structure; simultaneously, the axle hub body cladding is outside in the dabber and through fixed knot constructs interconnect fixed, and this kind of fixed mode is simple reliable, and easy realization, convenient production and processing.

Description

Three-dimensional processed fluoroplastic impeller hub and its processing technology

Technical field

The invention relates to the technical field of pumps, and in particular to a three-dimensionally processed fluoroplastic impeller hub and its processing technology.

Background technique

The main components of existing pumps generally include impellers, impeller hubs, etc. However, the existing impeller hubs are not only generally rigid and cannot meet current requirements, but the production process is relatively complex.

Contents of the invention

The object of the present invention is to provide a fluoroplastic impeller hub with good rigidity and convenient production and processing and its processing technology.

In order to achieve the above object, the present invention adopts the following technical solution: a three-dimensionally processed fluoroplastic impeller hub, which includes a hub body and a core shaft located in the hub body. The hub body is made of fluoroplastic. The hub body Covered on the outside of the mandrel and connected to each other through a fixed structure.

In one embodiment, the hub body includes a shaft body and a wheel disk located at one end of the shaft body. The wheel disk is provided with rotating blades on its distal surface away from the shaft body.

In one embodiment, the rotating blades are provided with multiple blades and are arranged in a spiral distribution along the circumferential direction of the distal end surface.

In one embodiment, the proximal end surface of the wheel disk close to the shaft body is provided with reinforcing ribs. There are multiple reinforcing ribs and they are evenly spaced along the circumferential direction of the proximal end face.

In one embodiment, the mandrel is made of a second material different from fluoroplastic, and the hardness of the second material is greater than the hardness of the fluoroplastic.

In one embodiment, the mandrel includes a shaft part and a fixed part, and the fixed part is composed of a plurality of fixed claws evenly spaced along the circumferential direction of the shaft part.

In one embodiment, the fixed structure includes a key structure. The key structure includes a keyway formed in the hub body and a wedge key provided on the shaft part. The fixed part forms the wedge key.

One embodiment, a processing technology for three-dimensionally processed fluoroplastic impeller hub according to any one of claims 1 to 7, is characterized in that it at least includes the following steps:

Core shaft processing steps: Process the mandrel into shape by machining or injection molding;

Mandrel fixing step: Place the processed mandrel into the mold for forming the hub body and fix the mandrel through the clamp;

Shaft hub body forming step: Inject molten fluoroplastic rubber into the mold for molding the hub body through an injection molding machine. After the rubber is filled with the mold and the outer periphery of the mandrel is covered with rubber, wait for the rubber to cool to form the hub. The main body and the core shaft are covered by the hub body to achieve fixation between the core shaft and the hub body.

In one embodiment, the mandrel is a metal mandrel, and the metal mandrel is processed and shaped by a lathe or a milling machine or a CNC machine tool to form the shaft part and the fixed part; or the mandrel is a plastic mandrel, and the plastic mandrel is formed by Injection molding.

In one embodiment, in the step of molding the hub body, the temperature during injection molding is 325°C to 425°C, the preheating temperature of the mold is 165°C to 185°C, and the injection pressure is 100MPa to 130MPa.

After adopting the above technical solution, the present invention has the following advantages:

1. In the present invention, the fluoroplastic impeller hub includes a hub body and a core shaft located in the hub body. The hub body is made of fluoroplastic. Using fluoroplastic in this way not only ensures that the rigidity of the hub body is sufficient. , to meet the required requirements, and by setting the core shaft in the hub body, the torque is increased to further improve the rigidity of the impeller hub and better meet the needs of products, especially pump products; at the same time, the hub body Covered on the outside of the mandrel and connected to each other through a fixed structure, this fixing method is simple, reliable, easy to implement, and convenient for production and processing.

2. By arranging the hub body to include a shaft body and a wheel disk located at one end of the shaft body, and providing rotating blades on the far end surface of the wheel disk away from the shaft body, so as to form a cooperation with the impeller, the pump can be greatly improved. The power of the hub improves the use effect of the product, and the hub body of this structure is simple in structure, convenient for production and processing, and has high manufacturing efficiency, which can greatly reduce the production cost.

3. By arranging multiple rotating blades and arranging them in a spiral distribution along the circumferential direction of the distal end surface, the rotating thrust between the spiral blades and the impeller is greatly increased, thereby increasing the power of the pump and improving the working efficiency of the pump.

4. By providing reinforcing ribs on the proximal end surface of the wheel disk close to the shaft body, and multiple reinforcing ribs are evenly spaced along the circumferential direction of the proximal end surface, so as to ensure that the strength of the wheel disk is sufficient and improve the performance of the wheel. Roulette lifespan.

5. By setting the material hardness of the mandrel to be greater than the hardness of fluoroplastic, we ensure that the strength and rigidity of the mandrel are sufficient, thereby increasing the torque of the impeller hub and preventing the reverse torque from affecting the rigidity of the product.

6. By arranging the mandrel to include a shaft part and a fixed part, the fixed part is composed of a plurality of fixed claws evenly spaced along the circumferential direction of the shaft part. This not only facilitates the connection with the hub body, but also ensures reliable fixation and is not easy to fix. loose.

7. By arranging the fixed structure to include a key structure, and the key structure includes a keyway formed in the hub body and a wedge key provided on the shaft part, and the fixed part forms the wedge key, so that not only can the core be well The shaft and the hub body are connected into one body and are fixed reliably and have good firmness.

8. The present invention also discloses a processing technology, which at least includes the step of processing the mandrel, the step of fixing the mandrel, and the step of forming the hub body. In this way, the impeller hub can be processed and formed. Not only the processing process is simple, but also the processing is The impeller hub has large torque, which can greatly improve its rigidity, long service life and durability.

9. By setting the mandrel into a metal mandrel, the metal mandrel is processed and shaped by a lathe, milling machine or CNC machine tool to form the shaft part and the fixed part. This processing method is not only simple, but also has an integrated structure, good strength and high torque. The rigidity is better; alternatively, the mandrel can also be set as a plastic mandrel, and the plastic mandrel is molded through injection molding. This processing method is simpler. It is processed through the mold, the processing efficiency is higher, and the production and manufacturing costs are reduced. It is also an integrated structure with good strength, large torque and strong rigidity.

10. In the molding step of the hub body, the temperature during injection molding is 325°C ~ 425°C, the preheating temperature of the mold is 165°C ~ 185°C, and the injection pressure is 100Mpa ~ 130Mpa, so as to ensure smooth and convenient molding of the hub body. Demoulding, improving molding effect, improving processing and molding efficiency, reducing production and processing costs, and having good strength, rigidity and torque after molding to ensure the anti-torque effect of the pump.

Description of the drawings

The present invention will be further described below in conjunction with the accompanying drawings:

Figure 1 is a schematic three-dimensional structural diagram of the fluoroplastic impeller hub according to the present invention.

Figure 2 is a schematic three-dimensional structural diagram of the fluoroplastic impeller hub according to the present invention from another angle.

Figure 3 is a right view of Figure 1.

Figure 4 is a left view of Figure 1.

Figure 5 is a front view of the fluoroplastic impeller hub according to the present invention.

FIG. 6 is a cross-sectional view along the A-A direction in FIG. 5 .

FIG. 7 is a cross-sectional view along the B-B direction in FIG. 5 .

Figure 8 is an exploded schematic view of the fluoroplastic impeller hub according to the present invention.

The names of the components marked in the figure are as follows:

100. Fluoroplastic impeller hub; 10. Hub body; 110. Shaft body; 120. Wheel disc; 1201. Proximal end face; 1202. Distal end face; 130. Rotating blades; 140. Reinforcing ribs; 150. Keyway ; 20. Mandrel; 210. Shaft part; 220. Fixed part; 2201. Fixed claw; 2202. Wedge key.

Detailed ways

In order to explain the overall concept of the present invention more clearly, a detailed description will be given below in conjunction with the accompanying drawings by way of example.

It should be noted that many specific details are set forth in the following description to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the following. Limitations of the Specific Embodiments Disclosed.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection between two elements or the interaction between two elements. However, indicating direct connection means that the connection relationship between the two connected subjects is not established through excessive structures, but is only connected through connection structures to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in Figures 1 to 8, the present invention provides a fluoroplastic pump, which includes a fluoroplastic pump body, a fluoroplastic impeller hub 100, and a fluoroplastic impeller connected to the fluoroplastic impeller hub, wherein the fluoroplastic impeller shaft The hub 100 includes a hub body 10 and a core shaft 20 located in the hub body 10. The hub body 10 is made of fluoroplastic. Using fluoroplastic in this way not only ensures that the hub body is rigid enough to meet the required requirements, but also And by arranging a core shaft in the hub body, the torque is increased to further improve the rigidity of the impeller hub and better meet the needs of products, especially pump products; at the same time, the hub body 10 is covered with the core shaft 20 The outside is connected and fixed with each other through a fixed structure, which facilitates the connection and fixation between the mandrel and the hub body. The fixing method is simple, reliable, easy to implement, and convenient for production and processing.

In this embodiment, the hub body 10 specifically includes a shaft body 110 and a wheel disk 120 located at one end of the shaft body 110. The wheel disk 120 is provided with rotating blades 130 on the distal surface 1202 away from the shaft body 110, so as to form a rotary blade 130 with the impeller. Cooperation can greatly improve the power of the pump and improve the use effect of the product. Moreover, the hub body of this structure is simple in structure, convenient for production and processing, and has high manufacturing efficiency, which can greatly reduce the production cost.

Specifically, multiple rotating blades 130 can be arranged in a spiral distribution along the circumferential direction of the distal surface 1201, thus greatly increasing the rotational thrust between the spiral blades and the impeller, thereby increasing the power of the pump and improving the working efficiency of the pump. ; More specifically, there are five rotating blades 130, and the five rotating blades 130 are evenly and spacedly distributed on the distal end surface. Of course, it can be understood that they can also be three, four or six.

And, in order to ensure that the strength of the wheel disc is sufficient and to increase the service life of the wheel disc, reinforcing ribs 140 can be provided on the proximal end surface 1201 of the wheel disc 120 close to the shaft body 110. The reinforcing ribs 140 are provided with multiple strips along the The proximal end surface 1201 is evenly spaced in the circumferential direction. Specifically, there are six reinforcing ribs 140, and the six reinforcing ribs 140 are evenly distributed on the proximal end surface at intervals; of course, it can be understood that they can also be three, four, or Five, seven or eight etc.

Moreover, the mandrel 20 can be made of a second material different from fluoroplastics. The hardness of the second material is greater than the hardness of the fluoroplastic material. The second material can specifically be metal to ensure that the strength of the mandrel is sufficient and that it has sufficient strength. Rigidity, thereby increasing the torque of the impeller hub and preventing reverse torque from affecting the rigidity of the product.

More specifically, the core shaft 20 can be configured to include a shaft part 210 and a fixed part 220. The fixed part 220 is composed of a plurality of fixed claws 2201 evenly spaced along the circumferential direction of the shaft part 210. This not only facilitates the connection between the shaft part and the hub body. The connection is reliable and not easy to loosen.

Secondly, the fixing structure may include a key structure. The key structure includes a keyway 150 formed in the hub body 10 and a wedge key 2202 provided on the shaft part 210. The fixing part 220 forms the wedge key 2202, and the fixing claw 2201 is There are six wedge keys 2202, and there are six key slots 150. It should be noted here that the key slots 150 are not provided separately. The hub body 10 is actually formed because the hub body 10 is covered with the core shaft 20. Externally, and due to the existence of the wedge key 2202, the keyway 150 is formed, which can greatly enhance the connection firmness between the mandrel and the hub body, making the mandrel less likely to loosen, and increasing the torque through the mandrel, so that The rigidity of the fluoroplastic impeller hub is enhanced to prevent torque from affecting the rigidity of the fluoroplastic impeller hub.

Finally, the present invention also discloses a processing technology involving three-dimensional processing of fluoroplastic impeller hub. Specifically, it at least includes the following steps:

Core shaft processing steps: Process the mandrel into shape by machining or injection molding;

Mandrel fixing step: Place the processed mandrel into the mold for forming the hub body and fix the mandrel through the clamp;

Shaft hub body forming step: Inject molten fluoroplastic rubber into the mold for molding the hub body through an injection molding machine. After the rubber is filled with the mold and the outer periphery of the mandrel is covered with rubber, wait for the rubber to cool to form the hub. The main body and the core shaft are covered by the hub body to achieve fixation between the core shaft and the hub body.

Based on the above processing technology, not only can the impeller hub be well processed and formed, but the processing process is simple, and the processed impeller hub has high torque, which can greatly improve its rigidity, long service life and durability.

At the same time, specifically, the mandrel 20 in this embodiment is a metal mandrel, which can be processed and formed by a lathe, a milling machine, or a CNC machine tool to form the shaft part and the fixed part. This processing method is not only simple, but also has an integrated structure. Good strength, large torque and better rigidity. Of course, the mandrel 20 can also be injection molded. This processing method is simpler. It is processed through a mold, which has higher processing efficiency and reduces production and manufacturing costs. It is also an integrated structure with good strength, large torque, and strong rigidity. .

In addition, in the molding step of the hub body 10, the temperature during injection molding is 325°C to 425°C, specifically 405°C, the preheating temperature of the mold is 165°C to 185°C, specifically 175°C, and the injection pressure is 100Mpa ~130Mpa, specifically 118Mpa. This ensures smooth molding of the hub body, facilitates demolding, improves the molding effect, improves processing and molding efficiency, reduces production and processing costs, and has good strength, rigidity and large torque after molding to ensure that the pump Anti-torque effect.

It is understandable that the injection molding temperature can also be 325℃, 330℃, 335℃, 340℃, 345℃, 350℃, 355℃, 360℃, 365℃, 370℃, 380℃, 390℃, 400℃, 410℃, 415℃, 420℃, 425℃, etc.

It can be understood that the preheating temperature of the mold can also be 165°C, 170°C, 180°C, 185°C, etc.

It is understood that the injection pressure can also be 100Mpa, 105Mpa, 108Mpa, 110Mpa, 115Mpa, 120Mpa, 125Mpa, 128Mpa, 130Mpa, etc.

Except for the above-mentioned preferred embodiments, the technical solutions protected by the present invention are not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solutions in any one embodiment with the technical solutions in one or more other embodiments is not limited to the present invention. within the scope of protection. Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims (10)

1. The fluoroplastic impeller shaft hub is characterized by comprising a shaft hub body and a mandrel arranged in the shaft hub body, wherein the shaft hub body is made of fluoroplastic, and the shaft hub body is coated outside the mandrel and is mutually connected and fixed through a fixing structure.

2. The three-dimensional processed fluoroplastic impeller hub according to claim 1, wherein the hub body comprises a shaft body and a wheel disc arranged at one end of the shaft body, and the distal end surface of the wheel disc, which is far away from the shaft body, is provided with rotary blades.

3. The three-dimensional processed fluoroplastic impeller hub according to claim 2, wherein said rotary blades are provided in a plurality and spirally distributed along the circumferential direction of the distal end face.

4. The three-dimensional processed fluoroplastic impeller hub according to claim 2, wherein the wheel disc is provided with reinforcing ribs near the proximal end face of the shaft body, and the reinforcing ribs are provided with a plurality of reinforcing ribs and are uniformly distributed at intervals along the circumferential direction of the proximal end face.

5. The three-dimensional processed fluoroplastic impeller hub of claim 1, wherein the mandrel is made of a second material different from the fluoroplastic and having a hardness greater than the fluoroplastic material.

6. The three-dimensional processed fluoroplastic impeller hub according to claim 1, wherein the mandrel comprises a shaft portion and a fixing portion, and the fixing portion is composed of a plurality of fixing claws uniformly distributed at intervals along the circumferential direction of the shaft portion.

7. The three-dimensional processed fluoroplastic impeller hub of claim 5, wherein the fixing structure comprises a key structure comprising a key groove formed in the hub body and a wedge key provided on the shaft portion, the fixing portion forming the wedge key.

8. A process for machining a fluoroplastic impeller hub for three-dimensional machining according to any one of claims 1 to 7, characterized by comprising at least the following steps: the core shaft processing step comprises the following steps: machining and forming the mandrel through machining or injection molding;

and a step of fixing the mandrel: placing the processed mandrel into a die for forming the hub body and fixing the mandrel through a clamp;

and (3) forming a shaft hub body: injecting molten fluoroplastic rubber into a die for molding the shaft hub body through an injection molding machine, waiting for the rubber to fill the die, coating the periphery of the mandrel with the rubber, waiting for the rubber to cool to form the shaft hub body, and coating the mandrel with the shaft hub body so as to fix the mandrel and the shaft hub body.

9. The process according to claim 8, wherein the mandrel is a metal mandrel, and the metal mandrel is formed by machining by a lathe or a milling machine or a numerical control machine tool to form the shaft portion and the fixed portion; or the mandrel is a plastic mandrel, and the plastic mandrel is formed by injection molding.

10. The process according to claim 8, wherein in the step of molding the hub body, the temperature is 325 to 425 ℃, the preheating temperature of the mold is 165 to 185 ℃, and the injection pressure is 100 to 130Mpa.