CN214755909U

CN214755909U - Novel sealed air inlet device

Info

Publication number: CN214755909U
Application number: CN202121076867.7U
Authority: CN
Inventors: 沈峰; 张丰收; 贾涛
Original assignee: Shaanxi Diantong Machinery Manufacturing Co ltd
Current assignee: Shaanxi Diantong Machinery Manufacturing Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-16
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a novel sealed air inlet device belongs to sealed air inlet, blast air technical field, and the device includes blast chamber, sealed room and drive arrangement, wherein: the blast chamber is cylindrical shell structure, and the air intake has been seted up at cylindrical shell structure's middle part, and the air outlet has been seted up to cylindrical shell structure's side, and the inside central point of cylindrical shell structure puts and is provided with the fan blade, and the tubulose sealed chamber passes through the connection pad to be installed on the blast chamber, and the rotatable setting of transmission shaft is in tubulose sealed chamber middle part. The utility model discloses a novel seal structure utilizes the seal chamber effectively to completely cut off motor and blast chamber among the drive arrangement, thoroughly cuts off air flow pipeline and external environment, effectively avoids air or impurity to get into internal environment, the circulation of specially adapted nanometer metal powder gas mixture.

Description

Novel sealed air inlet device

Technical Field

The utility model belongs to the technical field of sealed admit air, the air blast especially, relate to a novel sealed admit air device.

Background

The metal nano material is an important branch of the nano material, the metal nano powder belongs to a zero-dimensional nano material, and the atomic and electronic structure of the metal nano powder is different from that of metal particles with the same chemical components. The nano-material has the unique characteristics of magnetism, light, electricity, sound, heat, force, chemistry and the like different from macroscopic objects and single atoms, the size range of the metal nano-material is 1-100 nm, and the material which presents special physicochemical effect obviously different from the conventional material is called as the nano-material. The production and manufacturing environment of the nano metal powder must be a sealed environment, and the nano metal powder is easy to explode when contacting with air, so that a strict sealing technology must be adopted for an air inlet device in the production process of the nano metal powder, the existing sealing device is unreasonable in structure, the strict sealing of a motor rotating shaft cannot be realized, the dynamic sealing performance is poor, and the production safety is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a novel sealed air inlet unit adopts novel seal structure, utilizes the seal chamber effectively to completely isolate motor and blast chamber among the drive arrangement, thoroughly isolates air flow pipeline and external environment, effectively avoids air or impurity to get into internal environment, the circulation of specially adapted nanometer metal powder gas mixture.

The utility model discloses an above-mentioned problem is solved to following technical means:

a novel sealed air inlet device comprises a blast chamber, a sealed chamber and a driving device, wherein: the blast chamber is of a cylindrical shell structure, an air inlet is formed in the middle of the cylindrical shell structure, an air outlet is formed in the side face of the cylindrical shell structure, and a fan blade is arranged in the center of the interior of the cylindrical shell structure and sleeved on the transmission shaft; the sealing chamber consists of a tubular sealing cavity and connecting discs arranged at two ends of the tubular sealing cavity, the tubular sealing cavity is arranged on the blast chamber through the connecting discs, and the transmission shaft is rotatably arranged in the middle of the tubular sealing cavity; a motor in the driving device is fixed on the connecting disc through a mounting disc, and a rotating shaft of the motor is connected with the transmission shaft.

Preferably, a threaded end cover, a V-shaped sealing ring, a retainer ring, a first bearing, a first spacer, a first pole shoe, a magnetic fluid, a second pole shoe, a second spacer and a second bearing are sequentially arranged in the tubular sealing cavity, wherein: the threaded end cover is arranged in a step hole at the outer end of the tubular sealing cavity; the V-shaped sealing ring is sleeved on the annular groove of the transmission shaft and is close to the threaded end cover; the retainer ring is arranged close to the V-shaped sealing ring and used for limiting the position of the first bearing; the first spacer is arranged close to the inner side of the first bearing and used for limiting the position of the first pole shoe; the position of the second pole shoe is limited by a second spacer bush, and a magnetic fluid is filled in an annular cavity between the second pole shoe and the first pole shoe; the second bearing is arranged at the bottom of the tubular sealing cavity and is close to the second spacer bush.

Preferably, an O-ring is disposed between the first and second pole pieces and the inner wall of the tubular sealing cavity.

Preferably, the tubular sealing cavity is respectively provided with a cooling liquid channel at a position corresponding to the first pole shoe and the second pole shoe, the first pole shoe and the second pole shoe are respectively provided with a cooling cavity, and the cooling cavity and the cooling liquid channel form a cooling loop for taking away heat generated during the sealing work of the magnetic fluid.

The utility model discloses a novel sealed air inlet device has following beneficial effect:

the utility model discloses a novel seal structure utilizes the seal chamber effectively to completely cut off motor and blast chamber among the drive arrangement, thoroughly cuts off air flow pipeline and external environment, effectively avoids air or impurity to get into internal environment, and the circulation of specially adapted nanometer metal powder gas mixture, this structure specially adapted nanometer metal powder's production process, the seal chamber adopts reasonable multistage sealing technique, accomplishes the strict seal of motor shaft department, and dynamic seal performance is good, is showing and has promoted the production security.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a first overall structural schematic diagram of the present invention;

fig. 2 is a second overall structural schematic diagram of the present invention;

fig. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a schematic structural view of the sealing chamber of the present invention;

fig. 5 is a schematic structural diagram of a pole shoe of the present invention.

In the figure, 1-blast chamber, 101-air inlet, 102-air outlet, 103-fan blade, 104-transmission shaft, 2-sealing chamber, 201-tubular sealing cavity, 202-connecting disc, 203-threaded end cover, 204-V-shaped sealing ring, 205-retaining ring, 206-first bearing, 207-first spacer bush, 208-first pole shoe, 209-magnetofluid, 210-second pole shoe, 211-second spacer bush, 212-second bearing, 213-O-shaped sealing ring, 214-cooling liquid channel, 215-cooling cavity, 3-driving device, 301-motor, 302-mounting disc and 303-rotating shaft.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the novel sealed air inlet device includes a blast chamber 1, a seal chamber 2 and a driving device 3, in the drawing, the blast chamber 1 is a cylindrical shell structure, an air inlet 101 is provided at the middle part of the cylindrical shell structure, an air outlet 102 is provided at the side surface of the cylindrical shell structure, the air inlet 101 is communicated with an air inlet pipe in a sealing way, the air outlet 102 is communicated with an air outlet pipe in a sealing way, a fan blade 103 is provided at the central position inside the cylindrical shell structure, the fan blade 103 is sleeved on a transmission shaft 104, the fan blade 103 rotates at a high speed, and gas or gas mixture flows out at a high speed from the air outlet 102 under the action of centrifugal force.

In fig. 3 to 5, the sealing chamber 2 is composed of a tubular sealing chamber 201 and connecting discs 202 arranged at two ends of the tubular sealing chamber 201, the tubular sealing chamber 201 is mounted on the blast chamber 1 through the connecting discs 202, the transmission shaft 104 is rotatably arranged in the middle of the tubular sealing chamber 201, and the tubular sealing chamber 201 is used for dynamically sealing the transmission shaft 104.

In this example, the motor 301 in the driving device 3 is fixed on the connecting disc 202 through the mounting disc 302, and the rotating shaft 303 of the motor 301 is connected with the transmission shaft 104, specifically, the end of the rotating shaft 303 and the transmission shaft 104 may be fixed by a coupler, or may be fixed by a concave platform or a convex platform.

It should be noted that, in fig. 4 and 5, the tubular seal cavity 201 is internally provided with a threaded end cover 203, a V-shaped seal ring 204, a retainer ring 205, a first bearing 206, a first spacer 207, a first pole shoe 208, a magnetic fluid 209, a second pole shoe 210, a second spacer 211, and a second bearing 212 in sequence, wherein: the threaded end cover 203 is arranged in a stepped hole at the outer end of the tubular sealing cavity 201, the threaded end cover 203 is used as a cover body for limiting the position of an internal device, a V-shaped sealing ring is also arranged between the outside of the threaded end cover 203 and the blast chamber 1, a V-shaped sealing ring 204 is arranged between the inside of the threaded end cover 203 and a retainer ring 205, and the V-shaped sealing ring 204 is sleeved on an annular groove of the transmission shaft 104 and is close to the threaded end cover 203; a retainer ring 205 is disposed adjacent to the V-ring 204 and is used to limit the position of the first bearing 206; a first spacer 207 is disposed immediately inside the first bearing 206 and serves to limit the position of the first pole piece 208; the position of the second pole shoe 210 is limited by a second spacer 211, and a magnetic fluid 209 is filled in an annular cavity between the second pole shoe 210 and the first pole shoe 208; second bearing 212 sets up in the bottom of tubular seal chamber 201, and just is close to second spacer 211, and multistage seal structure can show the dynamic seal nature that promotes transmission shaft 104, ensures the isolated effect of motor and inside air chamber.

It should be noted that, when the transmission shaft 104 rotates at a high speed, the magnetic fluid 209 is tightly attached to the inner wall of the tubular sealing cavity 201 under the action of centrifugal force, so as to achieve the sealing effect of the gap outside the pole shoes, in addition, an O-ring 213 is disposed between the first pole shoe 208, the second pole shoe 210 and the inner wall of the tubular sealing cavity 201 to achieve secondary sealing, however, because the magnetic fluid 209 is easy to generate heat in the flowing process, the positions of the tubular sealing cavity 201 corresponding to the first pole shoe 208 and the second pole shoe 210 are respectively provided with a cooling liquid channel 214, the first pole shoe 208 and the second pole shoe 210 are correspondingly provided with a cooling cavity 215, the cooling cavity 215 and the cooling liquid channel 214 form a cooling loop to take away heat generated when the magnetic fluid 209 works, and the magnetic fluid 209 generates heat when working by mutual friction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A novel sealed air inlet device is characterized by comprising a blast chamber (1), a sealed chamber (2) and a driving device (3), wherein:

the blast chamber (1) is of a cylindrical shell structure, the middle of the cylindrical shell structure is provided with an air inlet (101), the side surface of the cylindrical shell structure is provided with an air outlet (102), a fan blade (103) is arranged at the central position inside the cylindrical shell structure, and the fan blade (103) is sleeved on a transmission shaft (104);

the sealing chamber (2) consists of a tubular sealing cavity (201) and connecting discs (202) arranged at two ends of the tubular sealing cavity (201), the tubular sealing cavity (201) is arranged on the blast chamber (1) through the connecting discs (202), and the transmission shaft (104) is rotatably arranged in the middle of the tubular sealing cavity (201);

a motor (301) in the driving device (3) is fixed on the connecting disc (202) through a mounting disc (302), and a rotating shaft (303) of the motor (301) is connected with the transmission shaft (104).

2. The novel sealed air inlet device as claimed in claim 1, wherein a threaded end cover (203), a V-shaped sealing ring (204), a retainer ring (205), a first bearing (206), a first spacer (207), a first pole shoe (208), a magnetic fluid (209), a second pole shoe (210), a second spacer (211) and a second bearing (212) are sequentially arranged in the tubular sealing cavity (201), wherein:

the threaded end cover (203) is arranged in a step hole at the outer end of the tubular sealing cavity (201);

the V-shaped sealing ring (204) is sleeved on the annular groove of the transmission shaft (104) and is close to the threaded end cover (203);

the retainer ring (205) is arranged next to the V-shaped sealing ring (204) and used for limiting the position of the first bearing (206);

the first spacer (207) is arranged close to the inner side of the first bearing (206) and is used for limiting the position of the first pole shoe (208);

the position of the second pole shoe (210) is limited by a second spacer sleeve (211), and a magnetic fluid (209) is filled in an annular cavity between the second pole shoe (210) and the first pole shoe (208);

the second bearing (212) is arranged at the bottom of the tubular sealing cavity (201) and is close to the second spacer bush (211).

3. A new sealed air inlet device according to claim 2, characterized in that O-ring seals (213) are provided between the first and second pole pieces (208, 210) and the inner wall of the tubular sealing chamber (201).

4. A novel sealed air inlet device as claimed in claim 3, wherein the tubular sealed cavity (201) is provided with a cooling liquid channel (214) at a position corresponding to the first pole shoe (208) and the second pole shoe (210), the first pole shoe (208) and the second pole shoe (210) are provided with a cooling cavity (215) correspondingly, and the cooling cavity (215) and the cooling liquid channel (214) form a cooling loop for taking away heat generated during the sealing operation of the magnetic fluid (209).