Rotor impeller

Abstract

The utility model discloses a rotor impeller which comprises a metal support (2), and the metal support (2) comprises a center support (22) used for being connected with a rotating shaft and an impeller support (21) connected with the center support (22). And the non-metal outer layer (1) is formed by pouring a non-metal material, the non-metal outer layer (1) comprises a first outer layer part (11) covering the outer surface of the center support (22) and a second outer layer part (12) covering the outer surface of the impeller support (21), and the non-metal outer layer (1) formed by pouring is relatively fixed with the metal support (2). According to the rotor impeller provided by the utility model, the production quality of slurry is improved. And moreover, the damage to the metal part (metal bracket) of the rotor impeller caused by factors such as cavitation and corrosion is also avoided, and the service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pulping equipment, in particular to a rotor impeller. Background Art

[0002] In the processing of industrial raw materials, the powder-liquid mixing process is an essential step. In order to obtain a uniform and refined slurry, an efficient pulping system is usually selected in the industry. The rotor impeller and the stator are the core components of the efficient pulping. Their structures are the key to determining whether the slurry can be evenly dispersed.

[0003] At present, the rotor impeller made of metal materials directly contacts the slurry, and the metal particles generated by friction are likely to affect the production quality of the slurry. Summary of the Invention

[0004] In view of this, the utility model provides a rotor impeller.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A rotor impeller, comprising:

[0007] A metal bracket, the metal bracket includes a central bracket for connecting with a rotating shaft and an impeller bracket connected with the central bracket;

[0008] A non-metallic outer layer, the non-metallic outer layer is formed by casting with a non-metallic material. The non-metallic outer layer includes a first outer layer part covering the outer surface of the central bracket and a second outer layer part covering the outer surface of the impeller bracket. The cast non-metallic outer layer is relatively fixed with the metal bracket.

[0009] Optionally, in the above rotor impeller, the central bracket includes:

[0010] A rotating shaft connection part, the rotating shaft connection part has a rotating shaft installation hole penetrating through both ends thereof, and the inner wall of the rotating shaft installation hole has a keyway;

[0011] An impeller connection plate, the impeller connection plate is an annular plate sleeved outside the rotating shaft connection part and connected with the outer wall of the rotating shaft connection part. The impeller connection plate is perpendicular to the axis of the rotating shaft connection part, and the impeller bracket is connected with the impeller connection plate.

[0012] Optionally, in the above rotor impeller, the first outer layer part covers other exposed surfaces of the central bracket except the inner wall of the rotating shaft installation hole.

[0013] Optionally, in the above rotor impeller, the impeller bracket includes at least two concentrically arranged impeller rings, the impeller rings have material through holes for materials to pass through, and the second outer layer part can cover the hole walls of the material through holes.

[0014] Optionally, the impeller support in the above-mentioned rotor impeller has a second through hole, and the second through hole is located between two adjacent material through holes.

[0015] Optionally, multiple impeller rings in the above-mentioned rotor impeller include an inner impeller ring, a middle impeller ring and an outer impeller ring;

[0016] The second through holes are provided on both the middle impeller ring and the outer impeller ring.

[0017] As can be seen from the above technical solutions, the rotor impeller provided by the present invention can form a rotor impeller through metal materials and non-metal materials, effectively avoiding direct contact between the metal materials and the slurry (material). Therefore, it avoids the generation of metal particles due to the friction between the rotor impeller and the slurry, thereby improving the production quality of the slurry. Moreover, it also avoids the damage of the metal part (metal support) of the rotor impeller caused by factors such as cavitation and corrosion, effectively improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic flow chart of the rotor impeller processing method provided by the embodiment of the present invention;

[0020] Figure 2 It is a schematic cross-sectional view of the rotor impeller provided by the embodiment of the present invention;

[0021] Figure 3 It is a schematic structural view of the non-metal outer layer provided by the embodiment of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the non-metal outer layer provided by the embodiment of the present invention;

[0023] Figure 5 It is a schematic cross-sectional structural view of the metal support provided by the embodiment of the present invention;

[0024] Figure 6 It is a schematic front view structural view of the metal support provided by the embodiment of the present invention;

[0025] Figure 7 For Figure 6 The cross-sectional view along the A-A plane in Detailed implementation mode

[0026] The utility model discloses a rotor impeller to improve the production quality of pulp.

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0028] As Figures 1 - 7 shown, the embodiment of the present utility model provides a processing method for a rotor impeller, including:

[0029] S1: Fabricate the metal bracket 2 of the rotor impeller. The metal bracket 2 includes a central bracket 22 for connecting with the rotating shaft and an impeller bracket 21 connected to the central bracket 22;

[0030] Among them, the impeller bracket 21 and the central bracket 22 can be formed into the metal bracket 2 by separately processing and connecting through welding or bolts. Of course, the metal bracket 2 can also be formed by integral injection molding. The axis of the impeller bracket 21 coincides with the axis of the central bracket 22. It can be understood that both the impeller bracket 21 and the central bracket 22 are metal brackets, effectively improving the support stability, capable of providing the overall structural strength for the rotor impeller, and enabling the rotor impeller to better transmit torque and cope with the impact force when the rotor impeller disperses the pulp.

[0031] S2: Pour the non-metallic outer layer 1. The non-metallic outer layer 1 is formed by pouring with a non-metallic material. The non-metallic outer layer 1 includes a first outer layer part 11 covering the outer surface of the central bracket 22 and a second outer layer part 12 covering the outer surface of the impeller bracket 21;

[0032] In the process of forming the non-metallic outer layer 1 by pouring with a non-metallic material, the liquid non-metallic material can be directly poured onto the outer surface of the metal bracket 2. Among them, the temperature of the liquid non-metallic material will not affect the metal bracket 2, that is, it will not affect the structural stability of the metal bracket 2. Of course, the non-metallic outer layer 1 can also be formed separately by pouring, and then the first outer layer part 11 of the non-metallic outer layer 1 is covered on the outer surface of the central bracket 22 and the second outer layer part 12 is covered on the outer surface of the impeller bracket 21 through assembly.

[0033] S3: Relative fixation. The cast non-metallic outer layer 1 and the metal bracket 2 are relatively fixed.

[0034] In the embodiment where the liquid non-metallic material is directly poured onto the outer surface of the metal bracket 2, when the non-metallic outer layer 1 is formed from the non-metallic material, it can be relatively fixed to the metal bracket 2.

[0035] In the embodiment where the non-metallic outer layer 1 is separately poured and then the non-metallic outer layer 1 covers the outer surface of the metal bracket 2 through assembly, the non-metallic outer layer 1 can be relatively fixed to the metal bracket 2 through a connection structure (such as bolts or pins, etc.).

[0036] The rotor impeller processing method provided by the embodiments of the present application can form a rotor impeller through metal materials and non-metallic materials, effectively avoiding direct contact between the metal material and the slurry (material). Therefore, it avoids the generation of metal particles due to the friction between the rotor impeller and the slurry, thereby improving the production quality of the slurry. Moreover, it also avoids damage to the metal part (metal bracket 2) of the rotor impeller caused by factors such as cavitation and corrosion, effectively improving the service life.

[0037] In order to improve the fixing stability between the non-metallic outer layer 1 and the metal bracket 2, in the step S1 of manufacturing the metal bracket 2 of the rotor impeller, the central bracket 22 has a first through hole 202 that axially penetrates the central bracket 22, and the first through hole 202 is located in the non-central area of the central bracket 22; in the step S2 of pouring the non-metallic outer layer 1, the non-metallic material can enter the first through hole 202 through pouring to form a first connecting column 101, and in the step S3 of relative fixing, the first connecting column 101 and the first outer layer portion 11 form an integral structure. Through the above settings, the adhesion between the non-metallic outer layer 1 and the metal bracket 2 is improved, and the strength of the rotor impeller is further improved.

[0038] Further, in the step S1 of manufacturing the metal bracket 2 of the rotor impeller, the impeller bracket 21 has a second through hole 201 that penetrates the inner side surface and the outer side surface of the impeller bracket 21, and the second through hole 201 is located in the non-central area of the impeller bracket 21; in the step S2 of pouring the non-metallic outer layer 1, the non-metallic material can enter the second through hole 201 through pouring to form a second connecting column 102, and in the step S3 of relative fixing, the second connecting column 102 and the second outer layer portion 12 form an integral structure.

[0039] In this embodiment, the non-metallic material is a plastic material or a composite material. Among them, the plastic material or the composite material itself has relatively small friction, so it can reduce the heat generated due to friction. On the basis of avoiding the shedding of metal particles, it also reduces the generation of non-metallic material particles, and further improves the service life.

[0040] Preferably, the non-metallic material is a plastic material with good toughness, wear resistance and corrosion resistance. On the basis of meeting the strength requirements of the rotor impeller, the cost of the rotor impeller can be further reduced, and the overall weight of the rotor impeller can be reduced.

[0041] Plastic materials or other composite materials have high toughness and corrosion resistance, and can cope with various harsh environments such as cavitation, chemical corrosion and electrochemical corrosion.

[0042] An embodiment of the present invention further provides a rotor impeller, including: a metal bracket 2 and a non-metallic outer layer 1. The metal bracket 2 includes a central bracket 22 for connecting with a rotating shaft and an impeller bracket 21 connected to the central bracket 22; the non-metallic outer layer 1 is formed by casting with a non-metallic material. The non-metallic outer layer 1 includes a first outer layer portion 11 covering the outer surface of the central bracket 22 and a second outer layer portion 12 covering the outer surface of the impeller bracket 21. The cast non-metallic outer layer 1 is relatively fixed to the metal bracket 2.

[0043] The rotor impeller provided by the embodiment of the present invention can form a rotor impeller through metal materials and non-metallic materials, effectively avoiding direct contact between the metal material and the slurry (material). Therefore, it avoids the generation of metal particles due to the friction between the rotor impeller and the slurry, thereby improving the production quality of the slurry. Moreover, it also avoids damage to the metal part (metal bracket) of the rotor impeller caused by factors such as cavitation and corrosion, effectively improving the service life.

[0044] In this embodiment, the central bracket 22 includes a rotating shaft connection portion 221 and an impeller connection plate 222. The rotating shaft connection portion 221 has a rotating shaft installation hole 2211 penetrating through both ends thereof, and the inner wall of the rotating shaft installation hole 2211 has a keyway 2212; the impeller connection plate 222 is an annular plate sleeved outside the rotating shaft connection portion 221 and connected to the outer wall of the rotating shaft connection portion 221. The impeller connection plate 222 is perpendicular to the axis of the rotating shaft connection portion 221, and the impeller bracket 21 is connected to the impeller connection plate 222.

[0045] During the connection between the rotor impeller and the rotating shaft, the rotor impeller and the rotating shaft are circumferentially positioned by setting a key in the keyway 2212.

[0046] Wherein, a fillet structure can be provided at the connection between the rotating shaft connection portion 221 and the impeller connection plate 222 to avoid stress concentration and further improve the service life.

[0047] Such as Figure 3 and Figure 7 As shown, in order not to affect the installation of the rotor impeller and ensure the rotational stability of the rotor impeller, the first outer layer portion 11 covers other exposed surfaces of the central bracket 22 except the inner wall of the rotating shaft installation hole 2211. That is, the inner wall of the rotating shaft installation hole 2211 is a metal surface, which can directly cooperate with the rotating shaft of the equipment (such as a pulping system).

[0048] It can be understood that, in order to prevent the casting material from entering the rotating shaft mounting hole 2211, the end face of the rotating shaft connecting portion 221 does not cover the first outer layer portion 11, and the first outer layer portion 11 is wrapped around the connection between the end face of the rotating shaft connecting portion 221 and the side surface of the rotating shaft connecting portion 221.

[0049] Of course, it is also possible to make the first outer layer portion 11 cover the inner wall of the rotating shaft mounting hole 2211 (including the inner wall of the keyway 2212). There is no specific limitation here and it is within the protection scope.

[0050] In the rotor impeller provided in this embodiment, the impeller support 21 includes at least two concentrically arranged impeller rings, and the impeller rings have material through holes 203 for materials to pass through. The second outer layer portion 12 can cover the hole walls of the material through holes 203. It can be understood that the materials can move through the gaps formed between the multiple impeller rings through the material through holes 203, so as to realize the uniform dispersion operation of the materials (slurries). It can be understood that the second outer layer portion 12 can cover the hole walls of the material through holes 203, but does not block the material through holes 203. The number of the material through holes 203 can be multiple and distributed along the circumferential and / or radial directions of the impeller rings.

[0051] In order to improve the stability of the relative fixation between the non-metallic outer layer 1 and the metal support 2, the impeller support 21 has a second through hole 201, and the second through hole 201 is located between two adjacent material through holes 203.

[0052] In this embodiment, the multiple impeller rings include an inner impeller ring 211, a middle impeller ring 212, and an outer impeller ring 213; the second through hole 201 is provided on both the middle impeller ring 212 and the outer impeller ring 213.

[0053] It can be understood that the second outer layer portion 12 includes an inner outer layer 121 covering the outer surface of the inner impeller ring 211, a middle outer layer 122 covering the outer surface of the middle impeller ring 212, and an outer outer layer 123 covering the outer surface of the outer impeller ring 213. During the rotation of the rotor impeller, the outer impeller ring 213 is the main stress surface and is subject to greater stress. Therefore, the second through hole 201 is provided on both the middle impeller ring 212 and the outer impeller ring 213, which can ensure the positioning effect between the middle impeller ring 212 and the middle outer layer 122 and the positioning effect between the outer impeller ring 213 and the outer outer layer 123.

[0054] Moreover, a support connection structure can be provided between the middle impeller ring 212 and the outer impeller ring 213, or an outer connection structure can be provided between the middle outer layer 122 and the outer outer layer 123 to ensure that the movements of the middle impeller ring 212 and the outer impeller ring 213 are consistent and prevent deformation due to excessive force on the outer ring (the outer impeller ring 213 and the outer outer layer 123).

[0055] As Figure 5 , Figure 6 and Figure 7 shown, the impeller connection plate 222 is located in the middle of the impeller support 21, that is, the impeller support 21 is divided into two symmetric parts along the center line of the impeller connection plate 222. Among them, the structures of each part are the same, and each has a second through hole 201 and a material through hole 203. Through the above settings, it is convenient to improve the overall uniformity of the rotor impeller, and thus improve the smoothness of the rotation of the rotor impeller.

[0056] As shown above, the impeller connection plate 222 is located in the middle of the impeller support 21. Therefore, as Figure 2 , Figure 3 and Figure 4 shown, the second outer layer part 12 is also divided into two symmetric second outer layer structures along the center line of the impeller connection plate 222. Since the connection between the first outer layer part 11 and the second outer layer part 12 has a smooth transition during the pouring process, stress concentration will not occur at the connection between the first outer layer part 11 and the second outer layer part 12. Moreover, blocked by the impeller connection plate 222, the pouring material is easily blocked between the two symmetric second outer layer structures in the second outer layer part 12. To ensure the overall strength of the second outer layer part 12, the second outer layer part 12 further includes a convex structure layer 1201 connecting the two symmetric second outer layer structures, and the outer surface of the convex structure layer 1201 protrudes from the outer surface of the second outer layer part 12 to strengthen the connection strength between the two second outer layer structures.

[0057] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotor impeller, characterized in that: include: A metal support (2), the metal support (2) comprising a central support (22) for connecting to the rotating shaft and an impeller support (21) connected to the central support (22); A non-metallic outer layer (1), the non-metallic outer layer (1) is formed by casting using a non-metallic material, the non-metallic outer layer (1) comprises a first outer layer portion (11) covering the outer surface of the central support (22) and a second outer layer portion (12) covering the outer surface of the impeller support (21), and the cast non-metallic outer layer (1) is relatively fixed to the metal support (2).

2. The rotor impeller according to claim 1, characterized in that The central support (22) comprises: A rotating shaft connecting portion (221), wherein the rotating shaft connecting portion (221) has rotating shaft mounting holes (2211) extending through both ends thereof, and an inner wall of the rotating shaft mounting hole (2211) has a keyway (2212); An impeller connecting plate (222), the impeller connecting plate (222) being an annular plate sleeved on the outside of the rotating shaft connecting portion (221) and connected to the outer wall of the rotating shaft connecting portion (221), the impeller connecting plate (222) being perpendicular to the axis of the rotating shaft connecting portion (221), and the impeller bracket (21) being connected to the impeller connecting plate (222).

3. The rotor impeller according to claim 2, characterized in that: The first outer layer (11) covers the other exposed surfaces of the central bracket (22) except the inner wall of the rotating shaft mounting hole (2211).

4. The rotor impeller according to claim 1, characterized in that: The impeller support (21) comprises at least two concentrically arranged impeller rings, each of which has a material through hole (203) for material to pass through, and the second outer layer (12) is capable of covering the hole wall of the material through hole (203).

5. The rotor impeller according to claim 4, characterized in that The impeller support (21) has a second through hole (201), and the second through hole (201) is located between two adjacent material through holes (203).

6. The rotor impeller according to claim 5, characterized in that The plurality of impeller rings include an inner impeller ring (211), a middle impeller ring (212) and an outer impeller ring (213); The second through hole (201) is provided on both the middle impeller ring (212) and the outer impeller ring (213).

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