High-rotating-speed long-shaft impeller structure for medium stirring

Abstract

The utility model relates to the field of heat treatment equipment. A high-rotating-speed long-shaft impeller structure for medium stirring comprises a holder, a coupler, a shaft and an impeller, the holder comprises an installation disc and a shaft barrel, the installation disc comprises a cage-shaped structure formed by connecting an upper disc face with a lower disc face, the upper disc face comprises through holes used for installation, the upper disc face is fixedly connected with the lower disc face through arc-shaped rib plates, the lower disc face is connected with the shaft barrel, and the shaft barrel is fixedly connected with the shaft barrel. The upper end of the shaft is connected with the coupler; the lower end of the shaft is connected with impellers. The retainer is mainly used for fixing and mounting the shaft barrel, further fixing the shaft and the impeller, and providing the mounting requirements of the retainer; the shaft is mainly used for transmitting power and driving the impeller to stir so as to realize the temperature uniformity of the quenching medium.

Description

Technical Field

[0001] The utility model relates to the field of heat treatment equipment, in particular to quenching heat treatment equipment. Background Art

[0002] With the continuous upgrading of domestic industrial industries, the performance requirements for high-end parts are getting higher and higher, and the requirements for heat treatment processes are also rising. Quenching, as a conventional heat treatment process, is also being continuously optimized. Among them, the temperature uniformity of the quenching medium plays an important role in improving the quenching hardness. Therefore, how to maintain the temperature uniformity of the quenching medium is an urgent problem to be solved. Utility Model Content

[0003] The utility model aims to provide a high-speed long-axis impeller structure for medium stirring to solve the above technical problems.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] A high-speed long-axis impeller structure for medium stirring includes a retaining frame, a coupling, a shaft and an impeller; the retaining frame includes a mounting plate and a shaft cylinder, the mounting plate includes an upper disk surface connected to a lower disk surface to form a cage-like structure, the upper disk surface includes a through hole for installation, the upper disk surface is fixedly connected to the lower disk surface through an arc-shaped rib plate, the lower disk surface is connected to the shaft cylinder, and the axis of the lower disk surface coincides with the axis of the shaft cylinder; the shaft cylinder is a long cylindrical component, and the shaft is installed in the shaft cylinder; the length of the shaft is 2 to 5 times the length of the shaft cylinder; the upper end of the shaft is connected to the coupling, and a keyway is provided between the shaft and the coupling; the lower end of the shaft is connected to the impeller; a keyway is provided between the shaft and the impeller.

[0006] The utility model utilizes a coupling to transfer motor power to a shaft, and the main function of the shaft is to transmit power. The length of the shaft in the utility model can be 2 to 5 times that of the shaft barrel, so the shaft can be called a long shaft, one end of the long shaft is installed in the shaft barrel, and the rest of the long shaft is outside the shaft barrel. An impeller is installed at the end of the long shaft, and the power transferred from the coupling drives the impeller to rotate, thereby stirring the quenching medium to achieve temperature uniformity of the quenching medium.

[0007] The function of the retainer is, on the one hand, to connect and fix the shaft cylinder, and on the other hand, to provide a through hole for installation, which is used to install and fix the retainer.

[0008] The keyway is used to transmit torque between the shaft and the coupling, which can increase the strength and stability of the connection and fix the position of the components. In addition, the keyway structure guides the connection between the shaft and the coupling, helping them to be installed along the specified path. The keyway structure is simple and reliable, which can reduce processing costs.

[0009] The keyway is used to transmit torque between the shaft and the impeller, which can increase the strength and stability of the connection and fix the position of the components. In addition, the keyway structure guides the connection between the shaft and the impeller, helping them to be installed along the specified path. The keyway structure is simple and reliable, which can reduce processing costs.

[0010] Furthermore, bearings are provided at the upper and lower ends of the shaft cylinder.

[0011] Bearings are arranged at both ends of the shaft cylinder, and the shaft is arranged in the bearings. The beneficial effect is that when the shaft rotates in the shaft cylinder, the surface friction between the shaft and the shaft cylinder can be converted into ball friction of the bearing to achieve high-speed rotation. In addition, the noise during operation can be reduced.

[0012] Further preferably, the bearing at the lower end of the shaft cylinder is fixed by a bearing head.

[0013] When the utility model is working, the shaft cylinder is perpendicular to the quenching medium, so the bearing at the lower end of the shaft cylinder needs to be fixed in the shaft cylinder by using a bearing head.

[0014] Further preferably, the bearing is a double row deep groove ball bearing.

[0015] The length of the shaft is longer than that of the shaft barrel. Therefore, when the shaft rotates at high speed, the interaction between the end impeller and the medium will cause the shaft to shake or jump. These shakes or jumps will be transferred to the shaft barrel, causing the shaft barrel to bear axial and radial pressures. The upper and lower end bearings use double-row deep groove ball bearings, which can withstand axial and radial forces at the same time. In addition, double-row deep groove ball bearings are suitable for high-speed rotation, and the friction loss is lower than that of single-row deep groove ball bearings, and the operation is smoother.

[0016] Furthermore, the impeller is a three-blade propeller made of stainless steel, and the impeller diameter is 20 to 60 mm.

[0017] The impeller is used to stir the quenching medium. When the workpiece is quenched, the quenching medium heats up quickly in a short period of time. Therefore, the impeller needs to be made of high-temperature and corrosion-resistant stainless steel. The high-speed rotation of the impeller to stir the quenching medium can quickly take the heated medium away from the workpiece and fill it with the surrounding low-temperature medium to maintain the workpiece in continuous contact with the low-temperature medium to increase the quenching hardness. The three-blade propeller impeller produces radial flow with large turbulence, so it has good heat exchange performance and is usually used in occasions where rapid stirring of the medium is required, especially in high-speed stirring occasions.

[0018] The utility model is mainly composed of a cage, a bearing, a shaft, a coupling and an impeller. The cage is mainly used to fix and install the shaft barrel, thereby fixing the shaft and the impeller, and providing the installation requirements of the cage itself; the bearing is mainly used to provide high-speed rotation, reduce the friction between the shaft and the shaft barrel, and reduce the noise during operation; the shaft is mainly used to transmit power and drive the impeller to stir to achieve the temperature uniformity of the quenching medium. Its beneficial effect is that the temperature uniformity of the quenching medium is achieved by stirring the quenching medium, which can effectively improve the hardness of the workpiece quenching and the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model.

[0022] Explanation of symbols:

[0023] 1. Cage; 2. Coupling; 3. Upper bearing; 4. Lower bearing; 5. Bearing head; 6. Shaft; 7. Impeller; 11. Mounting plate; 12. Shaft cylinder. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Secondly, the "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure or characteristic that can be included in at least one implementation of the utility model. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Reference Figure 1 , Figure 2 As shown, the high-speed long-axis impeller 7 structure for medium stirring includes a retaining frame 1, a coupling 2, a shaft 6 and an impeller 7; the retaining frame 1 includes a mounting plate 11 and a shaft cylinder 12, the mounting plate 11 includes an upper disk surface connected to a lower disk surface to form a cage-like structure, the upper disk surface includes a through hole for installation, the upper disk surface is fixedly connected to the lower disk surface by an arc-shaped rib plate, the lower disk surface is connected to the shaft cylinder 12, and the axis of the lower disk surface coincides with the axis of the shaft cylinder 12; the shaft cylinder 12 is a long cylindrical component, and the shaft 6 is installed in the shaft cylinder 12; the length of the shaft 6 is 2 to 5 times the length of the shaft cylinder 12; the upper end of the shaft 6 is connected to the coupling 2, and a keyway is provided between the shaft 6 and the coupling 2; the lower end of the shaft 6 is connected to the impeller 7; a keyway is provided between the shaft 6 and the impeller 7.

[0029] In this embodiment, the coupling 2 is used to apply the motor power to the shaft 6. The main function of the shaft 6 is to transmit power. In the utility model, the length of the shaft 6 can be 2 to 5 times that of the shaft cylinder 12. Therefore, the shaft 6 can be called a long shaft. One end of the long shaft is installed in the shaft cylinder 12, and the rest of the long shaft is outside the shaft cylinder 12. An impeller 7 is installed at the end of the long shaft. The power transferred from the coupling 2 drives the impeller 7 to rotate, thereby stirring the quenching medium to achieve temperature uniformity of the quenching medium.

[0030] The function of the retainer 1 is, on the one hand, to connect and fix the shaft cylinder 12 , and on the other hand, to provide a through hole for installation, for installing and fixing the retainer 1 .

[0031] The keyway is used to transmit torque between the shaft 6 and the coupling 2, which can increase the strength and stability of the connection and fix the position of the components. In addition, the keyway structure guides the connection between the shaft 6 and the coupling 2, helping the two to be installed along the specified path. The keyway structure is simple and reliable, which can reduce processing costs.

[0032] The keyway is used to transmit torque between the shaft 6 and the impeller 7, which can increase the strength and stability of the connection and fix the position of the components. In addition, the keyway structure guides the connection between the shaft 6 and the impeller 7, helping the two to be installed along a specified path. The keyway structure is simple and reliable, and can reduce processing costs.

[0033] The upper and lower ends of the shaft cylinder 12 are provided with bearings.

[0034] In this embodiment, an upper bearing 3 is installed at the upper end of the shaft cylinder 12, and a lower bearing 4 is installed at the lower end of the shaft cylinder 12. The shaft 6 is installed in the shaft cylinder 12 through bearings at upper and lower locations. The surface friction between the shaft 6 and the shaft cylinder 12 can be converted into ball friction of the bearings to reduce the friction of the shaft 6 when rotating in the shaft cylinder 12, thereby achieving high-speed rotation; in addition, the noise during operation can also be reduced.

[0035] The bearing at the lower end of the shaft cylinder 12 is fixed by the bearing head 5.

[0036] When the utility model is working, the shaft cylinder 12 is perpendicular to the quenching medium, so the bearing at the lower end of the shaft cylinder 12 needs to use the bearing head 5 to fix the bearing in the shaft cylinder 12 .

[0037] The bearing is a double row deep groove ball bearing.

[0038] In this embodiment, the length of the shaft 6 is longer than that of the shaft tube 12. Therefore, when the shaft 6 rotates at a high speed, the interaction between the end impeller 7 and the medium will cause the shaft 6 to shake or jump. These shakes or jumps will be transferred to the shaft tube 12, so that the shaft tube 12 needs to withstand the pressure in the direction and radial direction of the shaft 6. The upper and lower end bearings preferably use double-row deep groove ball bearings, which can withstand the forces in the direction and radial direction of the shaft 6 at the same time; in addition, the double-row deep groove ball bearings are suitable for high-speed rotation, and the friction loss is lower than that of the single-row deep groove ball bearings, and the operation is smoother.

[0039] The upper and lower end bearings can also adopt single row deep groove bearings, tapered roller bearings, thrust ball bearings, etc.

[0040] The impeller 7 is a three-blade propeller made of stainless steel, and the diameter of the impeller 7 is 20-60 mm.

[0041] In this embodiment, the impeller 7 is used to stir the quenching medium. When the workpiece is quenched, the quenching medium heats up quickly in a short time. Therefore, the impeller 7 needs to be made of high-temperature and corrosion-resistant stainless steel. The high-speed rotation of the impeller 7 to stir the quenching medium can quickly take the heated medium away from the workpiece, allowing the surrounding low-temperature medium to fill in, and maintain the workpiece in continuous contact with the low-temperature medium to improve the quenching hardness. The three-blade propeller impeller 7 produces radial flow with large turbulence, so it has good heat exchange performance and is usually used in occasions where rapid stirring of the medium is required, especially in high-speed stirring occasions.

[0042] The diameter of the impeller 7 is the diameter of the circle formed by the ends of the blades after the impeller 7 rotates. The diameter of the impeller 7 is related to the size of the quenching pool. Generally, the ratio of the pool diameter to the impeller 7 diameter is 2 to 6.

[0043] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0044] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. High-speed long-axis impeller structure for medium stirring, characterized by: It includes a cage, a coupling, a shaft and an impeller; The retainer includes a mounting plate and a shaft cylinder. The mounting plate includes an upper plate surface connected to a lower plate surface to form a cage-like structure. The upper plate surface includes a through hole for mounting. The upper plate surface is fixedly connected to the lower plate surface through an arc-shaped rib plate. The lower plate surface is connected to the shaft cylinder. The axis of the lower plate surface coincides with the axis of the shaft cylinder. The shaft cylinder is a long cylindrical component, and the shaft is installed in the shaft cylinder; The length of the shaft is 2 to 5 times the length of the shaft barrel; The upper end of the shaft is connected to the coupling, and a keyway is provided between the shaft and the coupling; The lower end of the shaft is connected to the impeller; a keyway is arranged between the shaft and the impeller.

2. The high-speed long-axis impeller structure for medium stirring according to claim 1 is characterized in that: The upper end and the lower end of the shaft cylinder are provided with bearings.

3. The high-speed long-axis impeller structure for medium stirring according to claim 2 is characterized in that: The bearing at the lower end of the shaft cylinder is fixed by a bearing head.

4. The high-speed long-axis impeller structure for medium stirring according to claim 2, characterized in that: The bearing is a double row deep groove ball bearing.

5. The high-speed long-axis impeller structure for medium stirring according to claim 1, characterized in that: The impeller is a three-blade propeller made of stainless steel, and the diameter of the impeller is 20-60 mm.

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