CN213393544U - Back-blowing type sealing structure - Google Patents
Back-blowing type sealing structure Download PDFInfo
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- CN213393544U CN213393544U CN202021869237.0U CN202021869237U CN213393544U CN 213393544 U CN213393544 U CN 213393544U CN 202021869237 U CN202021869237 U CN 202021869237U CN 213393544 U CN213393544 U CN 213393544U
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Abstract
The utility model relates to the field of powder separators and discloses a back-blowing type sealing structure, which comprises a sealing ring groove and a sealing pipeline communicated with the sealing ring groove, wherein the sealing pipeline is communicated with a sealing fan; the sealing ring groove comprises a mounting ring which is used for being in close contact with the inner wall of the rotating cage of the powder concentrator and an embedding ring which is used for being matched with the mounting ring; the mounting ring is provided with a first annular groove which is opened radially inwards; the embedded ring is provided with a second annular groove which is radially and outwards opened; the outer contour of the embedding ring is matched with the inner contour of the first annular groove in shape, and the first annular groove and the second annular groove form an annular sealing groove together; the position of the mounting ring, which is close to the powder concentrator rotating cage, is communicated with a sealing pipeline which penetrates through the wall of the powder concentrator rotating cage; a seal is disposed between the insert ring and the mounting ring. The utility model discloses effectively increased the gas tightness of selection powder machine rotating cage, strengthened the sealed effect of equipment to the material middlings.
Description
Technical Field
The utility model relates to a selection powder machine field, concretely relates to blowback formula seal structure.
Background
A powder concentrator is an industrial device used for powder separation. The powder selecting machine is widely applied to powder sorting in the fields of building materials, food, medical treatment, metallurgy, chemical industry and the like, a cage type rotor consisting of a plurality of blades is used as a core component of the powder selecting machine, negative pressure is formed in a powder selecting chamber through a fan, air enters the powder selecting machine from an air inlet and then forms rotary airflow under the driving of a high-speed cage type rotor, airflow drag force borne by fine particles entering the powder selecting chamber from a feed inlet is larger than centrifugal force, the fine particles move to the center of the rotor through the blades of the rotor, the fine particles fall into a fine powder collector by utilizing the suction force of the fan, the centrifugal force borne by the coarse particles is larger and moves to the outer side wall, and the coarse particles fall into the collector along the side.
Because the screening object is powder, the weight is light, the volume is small, if the sealing performance is not good, the dust pollution of a production workshop is easily caused, and even the explosion is possibly caused by the rapid increase of the powder, so the sealing of the powder concentrator is very important. Particularly, the sealing structure of the forced back-blowing part of the rotating cage of the powder concentrator is more important.
The rotary cage sealing structure of the existing powder concentrator plays a key role in material sorting quality, the conventional sealing can generate an effect under the condition of low requirement on product fineness, but still cannot achieve the effect under the condition of extremely fine requirement on the product fineness, and particularly for large-size powder concentrators, the more fine the product is, and the conventional sealing structure cannot meet the sealing requirement.
SUMMERY OF THE UTILITY MODEL
This scheme is anticipated is providing a new blowback formula seal structure to it is not good to solve current seal assembly seal effect, and the problem of finished product fineness "race thick".
The following scheme is provided for solving the problems:
the back-blowing type sealing structure comprises a sealing ring groove and a sealing pipeline communicated with the sealing ring groove, wherein the sealing pipeline is communicated with a sealing fan; the sealing ring groove comprises a mounting ring which is used for being in close contact with the inner wall of the rotating cage of the powder concentrator and an embedding ring which is used for being matched with the mounting ring; the mounting ring is provided with a first annular groove which is opened radially inwards; the embedded ring is provided with a second annular groove which is radially and outwards opened; the outer contour of the embedding ring is matched with the inner contour of the first annular groove in shape, and the first annular groove and the second annular groove form an annular sealing groove together; the position of the mounting ring, which is close to the powder concentrator rotating cage, is communicated with a sealing pipeline which penetrates through the wall of the powder concentrator rotating cage; a seal is disposed between the insert ring and the mounting ring.
The scheme has the advantages that:
in this scheme, except having sealed annular, still have sealed pipeline and sealed fan, become the initiative with current passive seal and seal, can greatly strengthen sealed effect. Set up the sealing member between embedding ring and the collar, can strengthen the leakproofness of whole seal ring groove, and through the setting of seal ring groove and sealed pipeline, the leakproofness of each passageway when making the selection powder can satisfy the thick and thin degree requirement of selection powder, avoids appearing because the leakproofness is not good and the condition that various thickness degree powders that cause mix, effectively avoids "running thick" problem.
Further, the sealing member includes a first sealing pad disposed at an outer side surface of the insert ring and a second sealing pad disposed at an inner side surface of the mount ring, and the first sealing pad and the second sealing pad are opened or closed according to a relative movement of the insert ring and the mount ring.
Through the setting of first sealed pad and the sealed setting of filling up of second, make the leakproofness of first ring channel and second ring channel better, and the sealing member can change the state that opens and shuts along with the relative motion of first ring channel and second ring channel, can make collar and embedding ring guarantee its leakproofness in the time of rationally adjusting ring seal groove space size.
Further, the ends of the first and second gaskets that are adjacent to each other are configured to mate; after the first and second gaskets are in contact with each other, the first and second gaskets are snapped into engagement with each other.
The end, close to each other, of the first sealing gasket and the second sealing gasket are clamped, and therefore the sealing performance between the installation ring and the embedding ring is improved.
Further, one end, close to each other, of each of the first sealing gasket and the second sealing gasket is comb-shaped.
Comb-tooth shape, convenient processing, and convenient joint each other.
Further, the sealed pipeline comprises a sealed main air pipe and a sealed branch air pipe; the main air pipe is communicated with the sealing branch air pipe; the sealing branch gas pipe is communicated with the annular sealing groove; the sealed main air pipe is communicated with the sealed fan.
Through the sealed bronchus, a sealed space is formed in the formed annular sealing groove, and through the sealed main gas pipe communicated with the sealing fan, the space in the sealed bronchus forms a sealed space.
Further, a gap is formed between the end of the insert ring and the bottom of the first annular groove.
The first annular groove in the mounting ring and the second annular groove in the embedding ring are not completely overlapped, a gap is formed between the first annular groove and the second annular groove, the first annular groove, the second annular groove and the gap form an annular sealing groove together, the space of the annular sealing groove is larger, the sealing space is more favorably formed, and the sealing performance is effectively enhanced.
Furthermore, at least one sealing bronchus is communicated with one mounting ring.
Each mounting ring at least corresponds to one sealing bronchus, so that the annular sealing groove can form a sealing space, and when the sealing space is needed, one mounting ring can be communicated with a plurality of sealing bronchus.
Further, a sealed primary air tube communicates with at least one sealed secondary air tube.
One sealed main air pipe can be connected with one or more sealed branch air pipes, and a sealed space is formed in each sealed branch air pipe through a sealed fan communicated with the sealed main air pipe.
Furthermore, the sealed main air pipe is perpendicular to the sealed branch air pipe at the joint of the sealed main air pipe and the sealed branch air pipe.
This arrangement enables the sealed conduit to communicate with the shortest sealed organ.
And further, a reinforcing rib is arranged outside the powder concentrator rotating cage, and the sealing branch gas penetrates through the reinforcing rib and the wall of the powder concentrator rotating cage to be communicated with the mounting ring.
The sealed bronchus is installed through the installation position of the reinforcing rib, and the supporting effect on the sealed bronchus can be achieved.
The sealed main air pipe is arranged above the reinforcing ribs and supported by the reinforcing ribs.
The reinforcing rib not only plays the effect of supporting the rotating cage of the powder concentrator, but also plays the role of supporting and sealing the main air pipe.
The sealing main air pipe is coiled outside the rotary cage of the powder concentrator, and the coiling central shaft of the sealing main air pipe is coaxial with the central shaft of the rotary cage of the powder concentrator.
The sealed main air pipe is coiled, the length of the main air pipe can be shortened to the greatest extent, the effect of saving cost is achieved, the sealed pipeline is effectively shortened, the size of a space required to be sealed by the sealed fan is reduced, and power consumption is reduced.
The sealing fan is a negative pressure exhaust fan.
The sealing fan adopts a negative pressure exhaust fan, and the negative pressure environment is formed by exhausting air in the sealing space, so that dust in the rotating cage of the powder concentrator is prevented from entering, and the sealing effect is achieved.
The utility model discloses force blowback seal assembly to adopt components such as wear-resisting high chromium cast iron, airtight pipeline, sealed fan to constitute. The high-speed airflow generated by the fan enters the space of the sealing device to form a positive pressure sealing effect, and the small clearance fit (3 +/-2 mm) of the casting sealing ring and the groove after finish machining is matched, so that coarse particles are effectively prevented from entering a finished product by utilizing the clearance of the sealing ring groove.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a top view of the first embodiment of the present invention.
Fig. 3 is a schematic view of an installation structure of a sealing member according to a first embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the rotary air-purifying device comprises a rotary cage wall 1, a mounting ring 11, an embedding ring 12, a sealing main air pipe 21, a sealing branch air pipe 22, a sealing fan 3, a reinforcing rib 4, a first sealing gasket 51 and a second sealing gasket 52.
Example one
The embodiment is substantially as shown in figures 1 and 2: the back-blowing type sealing structure comprises a sealing ring groove and a sealing pipeline communicated with the sealing ring groove, and the sealing pipeline is communicated with a sealing fan 3; the sealing ring groove comprises a mounting ring 11 which is used for being in close contact with the inner wall of the rotating cage of the powder concentrator and an embedding ring 12 which is used for being matched with the mounting ring 11; a mounting ring 11 having a first annular groove opening radially inward; an insert ring 12 having a second annular groove opening radially outward; the outer contour of the embedding ring 12 is matched with the inner contour shape of a first annular groove, and the first annular groove and a second annular groove form an annular sealing groove together; the position of the mounting ring 11 close to the powder concentrator rotating cage is communicated with a sealing pipeline which penetrates through the wall 1 of the powder concentrator rotating cage.
A sealed pipeline comprising a sealed main gas pipe 21 and a sealed branch gas pipe 22; the main gas pipe is communicated with the sealing branch gas pipe 22; the sealing bronchus 22 is communicated with the annular sealing groove; the sealed main air pipe 21 is communicated with the sealed fan 3. A sealed space is formed in the formed annular sealing groove by sealing the branch air pipe 22, and a sealed space is formed in the sealed branch air pipe 22 by the sealed main air pipe 21 communicated with the sealing fan 3.
There is a gap between the end of the insert ring 12 and the bottom of the first annular groove. First ring channel in the collar 11 and the second ring channel of embedding in the ring 12 are not the complete coincidence, have one section distance between the two, form the gap, make first ring channel, second ring channel and this section gap form the annular seal groove together, make the space of annular seal groove bigger, more be favorable to forming sealed space, effectively strengthen the leakproofness.
At least one sealing bronchus 22 is communicated with one mounting ring 11. Each mounting ring 11 at least corresponds to one sealing branch pipe 22, so that the annular sealing grooves can form a sealing space, and when needed, one mounting ring 11 can be communicated with a plurality of sealing branch pipes 22.
A sealed main gas tube 21 communicates with at least one sealed branch gas tube 22. One sealed main air pipe 21 can be connected with one or more sealed branch air pipes 22, and a sealed space is formed in each sealed branch air pipe 22 through the sealed fan 3 communicated with the sealed main air pipe 21.
The sealed main air pipe 21 is perpendicular to the sealed branch air pipe 22 at the joint of the sealed main air pipe 21 and the sealed branch air pipe 22. This arrangement enables the sealed conduit to communicate with the shortest sealed organ.
The powder concentrator rotating cage is externally provided with a reinforcing rib 4, and the sealed branch gas passes through the reinforcing rib 4 and the powder concentrator rotating cage wall 1 to be communicated with the mounting ring 11. The sealed branch pipe 22 is installed by the installation position of the reinforcing rib 4, and the sealed branch pipe 22 can be supported.
The sealed main air pipe 21 is arranged above the reinforcing rib 4, and the sealed main air pipe 21 is supported by the reinforcing rib 4. The reinforcing ribs 4 not only play a role of supporting the rotating cage of the powder concentrator, but also play a role of supporting and sealing the main air pipe 21.
The sealing fan 3 is a negative pressure exhaust fan. The sealing fan 3 adopts a negative pressure exhaust fan, and the negative pressure environment is formed by exhausting air in the sealing space, so that dust in the rotating cage of the powder concentrator is prevented from entering, and the sealing effect is achieved.
In this scheme, except having sealed annular, still have sealed pipeline and sealed fan 3, become the initiative with current passive seal and seal, can greatly strengthen sealed effect.
Example two
In this embodiment, the sealed main air pipe 21 is wound outside the rotation cage of the powder concentrator, and the winding central shaft of the sealed main air pipe 21 is coaxial with the central shaft of the rotation cage of the powder concentrator. Sealed main trachea 21 coils the setting, can furthest shorten main tracheal length, has not only reached the effect of saving the cost, still effectively shortens sealed pipeline, reduces the sealed space size that sealed fan 3 needs to be sealed, reduces the consumption.
EXAMPLE III
In this embodiment, sealed main trachea is the loop configuration, and the installation of convenient sealed main trachea.
Example four
In the embodiment, the main sealing air pipe is coiled outside the rotary cage of the powder concentrator, and the coiling central shaft of the main sealing air pipe is coaxial with the central shaft of the rotary cage of the powder concentrator. The coil is arranged, so that the installation is convenient. The sealed main air pipe is of a spiral structure. The spiral structure is convenient for manufacturing the sealed main air pipe.
EXAMPLE five
As shown in fig. 3, a sealing member is installed between the first annular groove and the second annular groove and can be opened and closed as the first annular groove and the second annular groove move relative to each other. Through the setting of sealing member, make the leakproofness of first ring channel and second ring channel better, and the sealing member can change the state of opening and shutting along with the relative motion of first ring channel and second ring channel, can make collar 11 and embedding ring 12 guarantee its leakproofness in the time of rationally adjusting ring seal groove space size.
The sealing element comprises a first sealing gasket 51 adhered to the outer side surface of the embedding ring 12 and a second sealing gasket 52 adhered to the inner side surface of the mounting ring 11, and the ends, close to each other, of the first sealing gasket 51 and the second sealing gasket 52 are clamped with each other after being contacted. The sealability between the mount ring 11 and the insert ring 12 is increased by the end of the first seal gasket 51 and the second seal gasket 52 that are close to each other.
In this embodiment, the first gasket 51 and the second gasket 52 are both rubber gaskets. The rubber is a common sealing material and has good sealing effect. One end of the first gasket 51 and the second gasket 52 close to each other is comb-shaped. Comb-tooth shape, convenient processing, and convenient joint each other.
In this embodiment, the first packing 51 is adhered to the top and bottom surfaces of the insert ring 12, and the second packing 52 is adhered to the top and bottom surfaces of the mounting ring 11, respectively.
EXAMPLE six
In this embodiment, the first packing 51 is bonded to all the surfaces in the circumferential direction of the insert ring 12, and the second packing 52 is bonded to all the surfaces in the installation ring 11 corresponding to the first packing 51. The second sealing gasket 52 is arranged corresponding to the first sealing gasket 51, so as to be conveniently clamped with each other.
EXAMPLE seven
In this embodiment, the ends of the first sealing gasket 51 and the second sealing gasket 52 close to each other are formed by integrally formed long and thin threads, and the bonding portions of the first sealing gasket 51 and the second sealing gasket 52 do not vertically correspond to each other, and the sealing effect can be achieved by the threads filled between the first sealing gasket 51 and the second sealing gasket 52. In this embodiment, the thin and long filament may be regarded as a linear filler having a certain flexibility.
Example eight
In this embodiment, the first seal 51 and the second seal 52 are respectively installed at the end portions near the openings of the insert ring 12 and the mounting ring 11, so that the first seal 51 and the second seal 52 are brought into contact with each other from the beginning of the contact between the insert ring 12 and the mounting ring 11, which contributes to the enhancement of the sealing property.
The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A blowback formula seal structure which characterized in that: the sealing device comprises a sealing ring groove and a sealing pipeline communicated with the sealing ring groove, wherein the sealing pipeline is communicated with a sealing fan; the sealing ring groove comprises a mounting ring which is used for being in close contact with the inner wall of the rotating cage of the powder concentrator and an embedding ring which is used for being matched with the mounting ring; the mounting ring is provided with a first annular groove which is opened radially inwards; the embedded ring is provided with a second annular groove which is radially and outwards opened; the outer contour of the embedding ring is matched with the inner contour of the first annular groove in shape, and the first annular groove and the second annular groove form an annular sealing groove together; the position of the mounting ring, which is close to the powder concentrator rotating cage, is communicated with a sealing pipeline which penetrates through the wall of the powder concentrator rotating cage; a seal is disposed between the insert ring and the mounting ring.
2. The blowback seal structure of claim 1, wherein: the sealing element comprises a first sealing gasket arranged on the outer side surface of the embedded ring and a second sealing gasket arranged on the inner side surface of the mounting ring, and the first sealing gasket and the second sealing gasket are opened or closed along with the relative movement of the embedded ring and the mounting ring.
3. The blowback seal structure of claim 2, wherein: one ends of the first sealing gasket and the second sealing gasket close to each other are matched; after the first and second gaskets are in contact with each other, the first and second gaskets are snapped into engagement with each other.
4. The blowback seal structure of claim 2, wherein: one end of the first sealing gasket, which is close to the second sealing gasket, is in a comb shape.
5. The blowback seal structure of claim 1, wherein: the sealed pipeline comprises a sealed main air pipe and a sealed branch air pipe; the main air pipe is communicated with the sealing branch air pipe; the sealing branch gas pipe is communicated with the annular sealing groove; the sealed main air pipe is communicated with the sealed fan.
6. The blowback seal structure of claim 5, wherein: a gap is formed between the end of the insert ring and the bottom of the first annular groove.
7. The blowback seal structure of claim 5, wherein: at least one sealing bronchus is communicated with one mounting ring.
8. The blowback seal structure of claim 5, wherein: a sealed primary air tube communicates with at least one sealed secondary air tube.
9. The blowback seal structure of claim 5, wherein: the main sealed air pipe is perpendicular to the branch sealed air pipe at the joint of the main sealed air pipe and the branch sealed air pipe.
10. The blowback seal structure of claim 5, wherein: and a reinforcing rib is arranged outside the powder concentrator rotating cage, and the sealing branch gas passes through the reinforcing rib and the wall of the powder concentrator rotating cage to be communicated with the mounting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021869237.0U CN213393544U (en) | 2020-08-31 | 2020-08-31 | Back-blowing type sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021869237.0U CN213393544U (en) | 2020-08-31 | 2020-08-31 | Back-blowing type sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393544U true CN213393544U (en) | 2021-06-08 |
Family
ID=76212685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021869237.0U Active CN213393544U (en) | 2020-08-31 | 2020-08-31 | Back-blowing type sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393544U (en) |
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2020
- 2020-08-31 CN CN202021869237.0U patent/CN213393544U/en active Active
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