Magnetic fluid sealing transmission device with three gas channels

Abstract

The utility model discloses a three-path gas channel magnetofluid sealing transmission device which comprises a flange seat, a rotating shaft is arranged in the flange seat, one end of the rotating shaft is respectively provided with a gas passage I, a gas passage II and a gas passage III, a space ring II is sleeved on the side surface of the middle of the rotating shaft, and a plurality of groups of gas holes II are formed in the space ring II. An air pipe III is arranged on the side surface of the rotating shaft, one end of the air pipe III communicates with one end of the air duct I, the other end of the air pipe III is aligned to the space ring II, pole shoes are fixedly connected to the surfaces of the two sides of the space ring II, and a permanent magnet I and a permanent magnet II are fixedly connected to the outer sides of the pole shoes correspondingly; and an air hole and an air hole III are respectively formed in the permanent magnet I and the permanent magnet II. According to the magnetofluid sealing transmission device, gas in two states can be conveyed at the same time, meanwhile, gas paths are separated from one another, so that different kinds of gas can be conveyed, gas conveying is not affected in the rotating process of the rotating shaft, and the using function of the magnetofluid sealing transmission device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic fluid seal transmission device, concretely is a three -way gas passage magnetic fluid seal transmission device. BACKGROUND

[0002] At present, the sealing performance requirement of the related field such as industrial equipment is higher and higher, the traditional sealing mode has been difficult to satisfy the sealing requirement of certain special occasion, and the development of magnetic fluid technology promotes the development of magnetic fluid sealing technology, and the magnetic fluid sealing technology is playing an increasingly important role in the sealing field.

[0003] After decades of development, magnetic fluid sealing technology has been widely used in national defense, aerospace, machinery, electronics, instruments, atomic energy, chemical industry, pharmaceutical industry and many other fields, especially in dust sealing, vacuum sealing and differential pressure sealing. Such as the sealing of important mechanical rotating parts, the sealing of dust and oil mist in computer hard disk storage, the sealing of radioactive gas in atomic energy equipment, the sealing of bacteria and other impurities in fermentation tank stirring, the sealing of vacuum coating machine / vacuum heat treatment furnace / single crystal silicon furnace for ultra-high and super-high vacuum conditions and the sealing of reaction kettle / fan / air pump for differential pressure conditions and so on. Especially in the rotating shaft as the dynamic leakage prevention part of the equipment has outstanding superiority. Magnetic fluid sealing technology can not only achieve the purpose of leakage prevention, but also does not affect the movement of the rotatable element.

[0004] At present, most of the existing magnetic fluid sealing transmission devices have only one gas channel, and the magnetic fluid sealing transmission device generally encounters static gas delivery and dynamic rotating gas delivery during use. Therefore, some magnetic fluid sealing transmission devices cannot work simultaneously in the two states, and the gas cannot be delivered when the rotating shaft rotates, thereby reducing the use function of the magnetic fluid sealing transmission device. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a three-way gas passage magnetic fluid sealing transmission device, which solves the problem that the traditional magnetic fluid sealing transmission device cannot simultaneously deliver static gas and dynamic rotating gas during use, so that the gas in the two states can be simultaneously delivered, and each gas path is separated from each other, so that different types of gas can be delivered. Secondly, the rotation of the rotating shaft does not affect the gas delivery, and further improves the use function of the magnetic fluid sealing transmission device.

[0006] In order to achieve the above object, the utility model discloses a three -way gas passage magnetic fluid sealing transmission device, including flange seat, the inside of flange seat is equipped with the pivot, and the one end of pivot is set up ventilating passage I, ventilating passage II and ventilating passage III respectively, the middle side surface of pivot is equipped with the spacer ring II, and the inside of spacer ring II is set up multiple groups of air hole II, the side surface of pivot is set up the trachea III, and the one end of trachea III is linked with the one end of ventilating passage I, the other end of trachea III is aligned with spacer ring II, the both side surfaces of spacer ring II are all fixedly connected with pole shoe, and the outside of pole shoe is fixedly connected with permanent magnet I and permanent magnet II respectively, the inside of permanent magnet I and permanent magnet II is set up air hole and air hole III respectively, the both sides of trachea III are equipped with trachea I and trachea II, and the one end of trachea I is linked with the one end of ventilating passage II, the other end of trachea I is aligned with permanent magnet II, and the one end of trachea II is linked with ventilating passage III, and the other end of trachea II is aligned with permanent magnet I.

[0007] Preferably, the outside of the permanent magnet I and the permanent magnet II is fixedly installed with the pole shoe, and the side surface of the pivot sleeved with the pole shoe.

[0008] Preferably, the side surface of the flange seat is provided with the air inlet hole I, the air inlet hole II and the air inlet hole III respectively, and the air inlet hole I corresponds to the permanent magnet I, the air inlet hole II corresponds to the spacer ring II, and the air inlet hole III corresponds to the permanent magnet II.

[0009] Preferably, the both end side surfaces of the pivot are sleeved with the spacer ring I, and the outside of the spacer ring I is provided with the bearing, and the outer surface of the bearing is connected with the inner wall of the flange seat.

[0010] Preferably, the outside of the one end bearing of the pivot is provided with the annular groove, and the inside of the groove is buckled with the snap spring.

[0011] Preferably, the other end side surface of the pivot is sleeved with the end cover, and the end cover is located in the inside of the flange seat.

[0012] The utility model provides a three -way gas passage magnetic fluid sealing transmission device.

[0013] The air passage I, the air passage II, the air passage III which are arranged in the rotating shaft and the air pipe I, the air pipe II, the air pipe III which are arranged on the side surface of the rotating shaft and the permanent magnet I, the partition ring II, the permanent magnet II which are sleeved on the side surface of the rotating shaft and the air inlet hole I, the air inlet hole II and the air inlet hole III which are arranged on the side surface of the flange seat are matched with each other, so that the problem that the traditional magnetic fluid sealing transmission device cannot simultaneously transport static gas and dynamic rotating gas during use is solved, therefore, the magnetic fluid sealing transmission device can simultaneously transport the gas in two states, the gas in each gas path is separated from each other, so that different kinds of gas can be transported, and the use function of the magnetic fluid sealing transmission device is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a structural schematic view of the utility model from the side view;

[0016] Figure 3 It is a structural schematic view of the inside of the flange seat in the utility model;

[0017] Figure 4 It is a structural schematic view of the inside of the rotating shaft of the permanent magnet I and the permanent magnet II in the utility model;

[0018] Figure 5 It is a structural schematic view of the inside of the rotating shaft of the partition ring II in the utility model.

[0019] In the drawing: 1, flange seat; 101, air inlet hole I; 102, air inlet hole II; 103, air inlet hole III; 2, rotating shaft; 201, air passage I; 202, air passage II; 203, air passage III; 204, air pipe I; 205, air pipe II; 206, air pipe III; 3, end cover; 4, bearing; 5, partition ring I; 6, clasp spring; 7, pole shoe; 8, permanent magnet I; 801, air hole; 9, partition ring II; 901, air hole II; 10, permanent magnet II; 1001, air hole III. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-5The utility model provides a kind of technical scheme: a three-way gas passage magnetic fluid sealing transmission device, including flange seat 1, the inside of flange seat 1 is equipped with rotating shaft 2, one end of rotating shaft 2 is respectively provided with air passage I 201, air passage II 202 and air passage III 203, the middle side surface of rotating shaft 2 is equipped with spacer ring II 9, a plurality of air holes II 901 are arranged in the inside of spacer ring II 9, the side surface of rotating shaft 2 is provided with air pipe III 206, one end of air pipe III 206 is communicated with one end of air passage I 201, the other end of air pipe III 206 is aligned with spacer ring II 9, the side surface of spacer ring II 9 is fixedly connected with pole shoe 7, the outside of pole shoe 7 is respectively fixedly connected with permanent magnet I 8 and permanent magnet II 10, the inside of permanent magnet I 8 and permanent magnet II 10 is respectively provided with air hole 801 and air hole III 1001, the both sides of air pipe III 206 are equipped with air pipe I 204 and air pipe II 205, one end of air pipe I 204 is communicated with one end of air passage II 202, the other end of air pipe I 204 is aligned with permanent magnet II 10, one end of air pipe II 205 is communicated with air passage III 203, the other end of air pipe II 205 is aligned with permanent magnet I 8.

[0022] As a kind of technical optimization scheme of the utility model, the outside of permanent magnet I 8 and permanent magnet II 10 is fixedly installed with pole shoe 7, the side surface of rotating shaft 2 is equipped with pole shoe 7, the outside of permanent magnet I 8 and permanent magnet II 10 can be positioned by pole shoe 7, so as to further improve permanent magnet I 8.

[0023] As a kind of technical optimization scheme of the utility model, the side surface of flange seat 1 is respectively provided with air inlet hole I 101, air inlet hole II 102 and air inlet hole III 103, air inlet hole I 101 corresponds with permanent magnet I 8, air inlet hole II 102 corresponds with spacer ring II 9, air inlet hole III 103 corresponds with permanent magnet II 10, can respectively transport the same kind of gas, and do not interfere with each other.

[0024] As a kind of technical optimization scheme of the utility model, the both end side surfaces of rotating shaft 2 are equipped with spacer ring I 5, the outside of spacer ring I 5 is equipped with bearing 4, the outside surface of bearing 4 is connected with the inner wall of flange seat 1, the magnetic fluid sealing transmission device can be sealed by spacer ring I 5, further improve the sealing property of magnetic fluid sealing transmission device, and bearing 4 can conveniently rotate rotating shaft 2.

[0025] As a kind of technical optimization scheme of the utility model, annular groove is provided on the outside of bearing 4 in one end of rotating shaft 2, clasp spring 6 is buckled in the inside of recess, the bearing 4 in one end of rotating shaft 2 can be positioned by the mutual cooperation of the side surface annular groove of rotating shaft 2 and clasp spring 6, so as to improve the stability of bearing 4 in one end of rotating shaft 2.

[0026] As a technical optimization scheme of the utility model, the other end side surface of the rotating shaft 2 is sleeved with an end cover 3, the end cover 3 is located in the inside of the flange base 1, and the bearing 4 at the other end of the rotating shaft 2 can be limited through the end cover 3.

[0027] In use, the utility model first connects the upper part of the air inlet hole I 101, the air inlet hole II 102 and the air inlet hole III 103 of the pipeline conveying different gases, at this time, the gas will flow along the air inlet hole I 101, the air inlet hole II 102 and the air inlet hole III 103 to the outer side of the permanent magnet I 8, the spacer ring II 9 and the permanent magnet II 10 sleeved on the side surface of the rotating shaft 2, then the permanent magnet I 8, the spacer ring II 9 and the permanent magnet II 10 flow into the air passage III 203, the air passage I 201 and the air passage II 202 through the air pipe II 205, the air pipe III 206 and the air pipe I 204 respectively, then different gases are conveyed to the designated position through the air passage III 203, the air passage I 201 and the air passage II 202 respectively, while driving the rotating shaft 2 to rotate, at this time, the gas can still be conveyed.

[0028] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.

[0029] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations. By the sentence "including a limited element, it does not exclude the existence of another same element in the process, method, article or device including the element".

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A three-gas passage magnetic fluid seal transmission device comprising a flange seat (1), characterized in that: The inside of the flange seat (1) is internally provided with a rotating shaft (2), and one end of the rotating shaft (2) is respectively provided with an air passage I (201), an air passage II (202) and an air passage III (203), the middle side surface of the rotating shaft (2) is sleeved with a spacer ring II (9), and a plurality of groups of air holes II (901) are formed in the inside of the spacer ring II (9), the side surface of the rotating shaft (2) is provided with an air pipe III (206), one end of the air pipe III (206) is communicated with one end of the air passage I (201), the other end of the air pipe III (206) is aligned with the spacer ring II (9), the two side surfaces of the spacer ring II (9) are fixedly connected with pole shoes (7), and the outer sides of the pole shoes (7) are respectively fixedly connected with permanent magnets I (8) and permanent magnets II (10), the inner sides of the permanent magnets I (8) and the permanent magnets II (10) are respectively provided with air holes (801) and air holes III (1001), the two sides of the air pipe III (206) are provided with air pipes I (204) and air pipes II (205), one end of the air pipe I (204) is communicated with one end of the air passage II (202), the other end of the air pipe I (204) is aligned with the permanent magnets II (10), one end of the air pipe II (205) is communicated with the air passage III (203), and the other end of the air pipe II (205) is aligned with the permanent magnets I (8).

2. A three-gas passage MHD sealed transmission device according to claim 1, characterized in that: The outer sides of the permanent magnets I (8) and the permanent magnets II (10) are fixedly installed with pole shoes (7), and the side surface of the rotating shaft (2) sleeved with the pole shoes (7).

3. A three-gas passage MHD sealed transmission device according to claim 1, characterized in that: The side surface of the flange seat (1) is respectively provided with air inlet holes I (101), air inlet holes II (102) and air inlet holes III (103), the air inlet holes I (101) correspond to the permanent magnets I (8), the air inlet holes II (102) correspond to the spacer ring II (9), and the air inlet holes III (103) correspond to the permanent magnets II (10).

4. A three-gas passage MHD sealed transmission device according to claim 1, characterized in that: The two end side surfaces of the rotating shaft (2) are sleeved with spacer rings I (5), and the outer sides of the spacer rings I (5) are provided with bearings (4), and the outer side surfaces of the bearings (4) are connected with the inner walls of the flange seat (1).

5. A three-gas passage MHD sealed transmission device according to claim 1, characterized in that: The outer side of the one end bearing (4) of the rotating shaft (2) is provided with an annular groove, and the inside of the groove is buckled with a clamping spring (6).

6. A three-gas passage MHD sealed transmission device according to claim 1, characterized in that: The other end side surface of the rotating shaft (2) is sleeved with an end cover (3), and the end cover (3) is located in the inside of the flange seat (1).

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