Magnetic drive fan of powder-liquid double-chamber bag sterilization dryer

Abstract

The utility model relates to the technical field of magnetic drive fans, in particular to a magnetic drive fan of a powder-liquid double-chamber bag sterilization dryer, which comprises a fan shaft, a bearing seat, a rotating magnetic pole, a bearing and an isolating sleeve. The bearing seat is vertically arranged, and the fan shaft is rotationally connected with the bearing seat through a bearing; the top of the fan shaft is connected with a rotating magnetic pole; the bearings comprise the first bearing and the second bearing, the draught fan shaft is sleeved with an isolation sleeve, the top end of the isolation sleeve abuts against the outer ring of the first bearing, the bottom end of the isolation sleeve abuts against the outer ring of the second bearing, and the inner side face of the isolation sleeve is spaced from the draught fan shaft. The isolation sleeve replaces an original outer ring sleeve and an original inner ring sleeve, the number of the sleeves is reduced, and the device is simplified; the inner side surface of the isolation sleeve and the fan shaft are arranged at an interval, so that friction between the fan shaft and the inner ring sleeve is avoided; and meanwhile, the isolation sleeve has the function of limiting the bearing by the original outer ring sleeve and inner ring sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic drive fans, in particular to a magnetic drive fan for a powder-liquid double-chamber bag sterilizing dryer. Background Art

[0002] At present, the sterilization dryers with drying function used in the production of powder-liquid double-chamber bags are divided into two categories according to their internal media: water bath type and steam mixed air circulation type. Due to the process characteristics of the sterilization and drying of the sterilization dryer, it is necessary to use a fan to circulate the mixed air in the sterilizer chamber to evenly raise and lower the temperature of the items in the chamber to achieve the purpose of sterilization and drying. The fan with magnetic drive using a magnetic coupling can transmit torque without physical contact due to its magnetic field interaction, and has the advantages of high efficiency, low noise, and simple structure. It is used in powder-liquid double-chamber bag sterilization dryers. However, in actual use, conventional magnetic drive fans have a high failure rate and it is difficult to achieve continuous operation. It is necessary to develop a magnetic drive fan suitable for use in this type of sterilization dryer.

[0003] like Figure 1 and Figure 2 A magnetically driven fan in the prior art shown in the figure comprises a fixed magnetic pole, a rotating magnetic pole, an outer ring sleeve, an inner ring sleeve, a bearing, a bearing seat and a fan shaft; a bearing for connecting to the fan shaft is installed on the bearing seat, an inner ring sleeve is arranged on the fan shaft, an outer ring outer cylinder is connected inside the bearing seat, and the inner ring sleeve and the outer ring sleeve are used to prevent the bearing position from changing; when the powder-liquid double-chamber bag is produced, the magnetically driven motor works in a high-temperature environment, and the inner ring sleeve is easy to loosen. The loosened inner ring sleeve is easy to generate friction and generate heat between the fan shaft. The heat generated by the friction between the inner ring sleeve and the fan shaft will be transmitted to the rotating magnetic pole connected to the fan shaft and cause the rotating magnetic pole to be demagnetized. The demagnetization of the rotating magnetic pole will cause the magnetically driven fan to stop rotating, affecting the production process of the powder-liquid double-chamber bag. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a magnetically driven fan for a powder-liquid double-chamber bag sterilization dryer, so as to solve the problem that when a magnetically driven fan in the prior art works in a high temperature environment, the inner ring sleeve is easily loosened and generates heat by friction with the fan shaft, which in turn easily causes the rotating magnetic pole to demagnetize, causing the magnetically driven fan to stop working.

[0005] A magnetically driven fan of a powder-liquid double-chamber bag sterilization dryer, comprising a fan shaft, a bearing seat, a rotating magnetic pole, a bearing and an isolation sleeve;

[0006] The bearing seat is arranged vertically, and the fan shaft is rotatably connected to the bearing seat through a bearing; a rotating magnetic pole is connected to the top of the fan shaft;

[0007] The bearing comprises a first bearing and a second bearing, and an isolation sleeve is disposed outside the fan shaft. The top end of the isolation sleeve abuts against the outer ring of the first bearing, and the bottom end of the isolation sleeve abuts against the outer ring of the second bearing. The inner side surface of the isolation sleeve is spaced from the fan shaft.

[0008] Furthermore, a chip receiving groove opening upward is provided at the bottom of the bearing seat.

[0009] Furthermore, a bearing cover is sleeved on the outer side of the fan shaft, and the bearing cover is installed on the top of the bearing seat.

[0010] Furthermore, the magnetic drive motor also includes a motor, a fixed magnetic pole and a motor fixing seat;

[0011] The motor is mounted on the top of the motor fixing seat, and the output shaft at the bottom of the motor is connected to the fixed magnetic pole located in the motor fixing seat, and the fixed magnetic pole is used for transmission with the rotating magnetic pole.

[0012] Furthermore, an isolation cover is provided between the fixed magnetic pole and the rotating magnetic pole, and the bottom of the isolation cover is connected to the top of the bearing seat.

[0013] Furthermore, a cushion block is arranged on the outer side of the bearing seat.

[0014] Furthermore, the isolation sleeve is made of high temperature resistant material.

[0015] Furthermore, the two ends of the isolation sleeve are stepped; the top surface of the inner side of the isolation sleeve faces the inner rings of the first bearing and the second bearing, and the top surface and the bottom surface of the outer side of the isolation sleeve face the outer rings of the first bearing and the second bearing; a gap is correspondingly arranged between the top surface and the bottom surface of the inner side of the isolation sleeve and the inner rings of the first bearing and the second bearing.

[0016] Beneficial effects: The utility model replaces the original outer ring sleeve and inner ring sleeve with an isolation sleeve, thereby reducing the number of sleeves and simplifying the device; the inner side surface of the isolation sleeve is spaced from the fan shaft to avoid friction between the fan shaft and the inner ring sleeve, and at the same time, the isolation sleeve is made of high-temperature resistant material to enhance thermal stability and reduce the failure rate of the magnetic drive fan; at the same time, the isolation sleeve takes into account the function of the original outer ring sleeve and inner ring sleeve to limit the bearing; the reduction in the failure rate of the magnetic drive fan can reduce the use and maintenance costs of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the internal structure of a magnetic drive fan in the prior art;

[0019] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0020] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0021] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0022] In the figure: 1. motor; 2. motor fixing seat; 3. fixed magnetic pole; 4. isolation cover; 5. rotating magnetic pole; 601. first bearing; 602. second bearing; 7. bearing cover; 801. inner ring sleeve; 802. outer ring sleeve; 9. isolation sleeve; 10. chip groove; 11. bearing seat; 12. fan shaft; 13. spacer block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application.

[0024] It should be noted that the embodiments of the present invention and the features involved in the embodiments can be combined with each other without conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 2A magnetically driven fan in the prior art shown in the figure drives the fixed magnetic pole 3 to rotate through the output shaft of the motor 1, and the fixed magnetic pole 3 and the rotating magnetic pole 5 are transmitted through the interaction of the magnetic field; the rotating magnetic pole 5 is connected to the fan shaft 12, and the rotating magnetic pole 5 is used to drive the fan shaft 12 to rotate; the fan shaft 12 is equipped with a first bearing 601 and a second bearing 602, and is installed in the bearing seat 11 through the first bearing 601 and the second bearing 602; an outer ring sleeve 802 is installed on the inner wall of the bearing seat 11; the top of the outer ring sleeve 802 abuts against the outer ring of the first bearing 601, and the outer ring sleeve The bottom of the cylinder 802 abuts against the top of the outer ring of the second bearing 602. The outer ring sleeve 802 is used to limit the first bearing 601 and the second bearing 602 by limiting the first bearing 601 and the second bearing 602. The inner ring sleeve 801 is installed on the fan shaft 12 and is used to cooperate with the outer ring sleeve 802 so that the fan shaft 12 can be accurately limited and kept vertical. There is a gap between the two ends of the inner ring sleeve 801 and the inner rings of the two bearings. The inner ring sleeve 801 is used to limit the inner rings of the two bearings to avoid a large change in the position of the inner rings, which may cause the magnetic drive motor 1 to fail. Figure 1 and Figure 2 When the magnetic drive motor 1 shown works in a high temperature environment, the high temperature may cause the inner ring sleeve 801 to move, resulting in relative movement between the inner ring sleeve 801 and the fan shaft 12 and friction. The heat generated by the friction will be transmitted to the rotating magnetic pole through the fan shaft 12, causing the temperature of the rotating magnetic pole 5 in the high temperature environment to further increase, thereby causing the rotating magnetic pole 5 to demagnetize, the magnetic drive fan to stop working, and the production line to stop working. The bearing is a prior art and will not be described in detail here.

[0026] like Figure 3 and Figure 4 The magnetic drive fan of a powder-liquid double-chamber bag sterilization dryer shown in the figure is improved from the above magnetic drive fan, and comprises a motor 1, a motor fixing seat 2, a fixed magnetic pole 3, a rotating magnetic pole 5, a bearing, a bearing cover 7, a spacer sleeve 9, a bearing seat 11 and a fan shaft 12;

[0027] The motor 1 is arranged vertically, and the motor 1 is mounted on the motor fixing seat 2. The bottom of the motor fixing seat 2 is connected to a bearing seat 11 on which a fan shaft 12 is mounted. The output shaft at the bottom of the motor 1 extends downward to the inside of the motor fixing seat 2 and is fixedly connected to a fixed magnetic pole 3. The bearing seat 11 is rotatably connected to the fan shaft 12 through a bearing, and the top of the fan shaft 12 is fixedly connected to a rotating magnetic pole 5 extending upward into the inside of the fixed magnetic pole 3. The fixed magnetic pole 3 and the rotating magnetic pole 5 are used for transmission between the output shaft of the motor 1 and the fan shaft 12.

[0028] Bearings are installed in the bearing seat 11, and the bearings include a first bearing 601 and a second bearing 602; an isolation sleeve 9 is sleeved on the outside of the fan shaft 12, and the outer side of the isolation sleeve 9 is fixedly connected to the bearing seat 11; the top of the outer side of the isolation sleeve 9 abuts against the first bearing 601, and the bottom of the outer side of the isolation sleeve 9 abuts against the second bearing 602. The isolation sleeve 9 is used to prevent the first bearing 601 and the second bearing 602 from moving. The outer side of the isolation sleeve 9 is connected to the inner side of the bearing seat 11, and the outer end of the isolation sleeve 9 abuts against the outer rings of the two bearings respectively, and the inner end of the isolation sleeve 9 is spaced from the inner rings of the two bearings.

[0029] In this embodiment, the isolation sleeve 9 is made of high temperature resistant material; the isolation sleeve 9 is fixedly connected to the bearing seat 11, and the inner side of the isolation sleeve 9 is spaced from the fan shaft 12. The isolation sleeve 9 will not loosen in a high temperature environment, and will not rub against the fan shaft 12; the use of the isolation sleeve 9 can avoid the friction between the inner ring sleeve 801 and the fan shaft 12 when it is loose, avoid frictional heat, reduce the possibility of demagnetization of the rotating magnetic pole 5, and maintain the normal operation of the magnetic drive motor 1. The two ends of the isolation sleeve 9 are stepped; when the isolation sleeve 9 is installed, the upper and lower end faces of the outer side of the isolation sleeve 9 face the outer rings of the two bearings, and the upper and lower end faces of the inner side of the isolation sleeve 9 face the outer rings of the two bearings; a gap is correspondingly set between the top surface of the inner side of the isolation sleeve 9 and the inner rings of the first bearing 601 and the second bearing 602 to avoid friction between the isolation sleeve 9 and the inner rings of the two bearings. In order to further reduce the failure rate of the magnetic drive fan, the materials of the two bearings are selected to have good thermal stability, wear resistance, certain toughness and impact resistance, such as zirconia and other materials; the material of the isolation sleeve 9 is selected to be a high-temperature resistant material; this high-temperature resistant material has a certain elasticity, good thermal stability, high hardness under high temperature conditions and small thermal expansion rate, such as IEX, polytetrafluoroethylene and other polymer materials.

[0030] An isolation cover 4 is provided between the fixed magnetic pole 3 and the rotating magnetic pole 5. The isolation cover 4 is sleeved on the outside of the rotating magnetic pole 5. The bottom end of the isolation cover 4 is connected to the top of the fan base.

[0031] In this embodiment, the isolation cover 4 is provided to protect the fixed magnetic pole 3 and the rotating magnetic pole 5 to prevent demagnetization caused by friction between the fixed magnetic pole 3 and the rotating magnetic pole 5 .

[0032] An annular chip receiving groove 10 opening upward is provided at the bottom of the bearing seat 11 near the fan shaft 12 .

[0033] In this embodiment, the chip receiving groove 10 is used to receive chips, so as to prevent the chips generated inside the magnetic drive motor 1 from contaminating the materials on the production line.

[0034] A cushion block 13 is arranged outside the bearing seat 11 .

[0035] In this embodiment, the cushion block 13 is used to protect the magnetic drive motor 1 when the magnetic drive motor 1 is installed, and can also play a certain shock-absorbing role.

[0036] Working principle: When the motor 1 is powered on, the output shaft of the motor 1 drives the fixed magnetic pole 3 to rotate, and the fixed magnetic pole 3 and the rotating magnetic pole 5 are transmitted; the rotating magnetic pole 5 drives the fan shaft 12 to rotate;

[0037] During normal operation of the device, the isolation sleeve 9 can prevent the position of the first bearing 601 and the second bearing 602 from moving. The use of the isolation sleeve 9 avoids the possibility of friction between the inner ring sleeve 801 and the fan shaft 12, reduces the increase in ambient temperature caused by friction, and ensures the normal use of the magnetic drive fan; at the same time, the isolation sleeve 9 is made of high temperature resistant material, and the isolation sleeve 9 is not easy to deform, reducing the possibility of friction between the isolation sleeve 9 and the fan shaft 12.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A magnetic drive fan for a powder-liquid double chamber bag sterilization dryer, characterized in that: It includes a fan shaft, a bearing seat, a rotating magnetic pole, a bearing and a spacer sleeve; The bearing seat is arranged vertically, and the fan shaft is rotatably connected to the bearing seat through a bearing; a rotating magnetic pole is connected to the top of the fan shaft; The bearing comprises a first bearing and a second bearing, and an isolation sleeve is disposed outside the fan shaft. The top end of the isolation sleeve abuts against the outer ring of the first bearing, and the bottom end of the isolation sleeve abuts against the outer ring of the second bearing. The inner side surface of the isolation sleeve is spaced from the fan shaft.

2. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 1 is characterized in that: The bottom of the bearing seat is provided with a chip receiving groove opening upward.

3. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 1 is characterized in that: A bearing cover is sleeved on the outer side of the fan shaft, and the bearing cover is installed on the top of the bearing seat.

4. The magnetic drive fan of the powder-liquid double chamber bag sterilizing dryer according to any one of claims 1 to 3, characterized in that: It also includes a motor, a fixed magnetic pole and a motor fixing seat; The motor is mounted on the top of the motor fixing seat, and the output shaft at the bottom of the motor is connected to the fixed magnetic pole located in the motor fixing seat, and the fixed magnetic pole is used for transmission with the rotating magnetic pole.

5. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 4 is characterized in that: An isolation cover is arranged between the fixed magnetic pole and the rotating magnetic pole, and the bottom of the isolation cover is connected to the top of the bearing seat.

6. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 4, characterized in that: A cushion block is arranged on the outer side of the bearing seat.

7. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 1, characterized in that: The isolation sleeve is made of high temperature resistant material.

8. The magnetic drive fan of the powder-liquid double chamber bag sterilization dryer according to claim 1, characterized in that: The two ends of the isolation sleeve are stepped; the top surface of the inner side of the isolation sleeve faces the inner rings of the first bearing and the second bearing, and the top surface of the outer side of the isolation sleeve faces the outer rings of the first bearing and the second bearing; a gap is set between the top surface of the inner side of the isolation sleeve and the inner rings of the first bearing and the second bearing.

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