CN214500033U - Cement selection powder machine rotor seal structure - Google Patents
Cement selection powder machine rotor seal structure Download PDFInfo
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- CN214500033U CN214500033U CN202120512734.3U CN202120512734U CN214500033U CN 214500033 U CN214500033 U CN 214500033U CN 202120512734 U CN202120512734 U CN 202120512734U CN 214500033 U CN214500033 U CN 214500033U
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Abstract
The utility model relates to a selection powder machine technical field, concretely relates to cement selection powder machine rotor seal structure. The powder concentrator comprises a powder concentrator shell and a cage-shaped rotor, wherein a labyrinth seal structure and an interference seal structure are arranged between the powder concentrator shell and the cage-shaped rotor; the labyrinth seal structure comprises an upper seal body and a lower seal body which are mutually inserted to form a labyrinth loop; interference formula seal structure includes that the cross-section is the radial annular seal and the axial annular seal of L shape, axial annular seal end opening is equipped with the seal lip that comprises the elastic rubber body, seal lip and radial annular seal interference fit, the utility model discloses a double seal structure cooperation is used to be equipped with the malleation induced duct and select the outside atmosphere of powder casing and link up between double seal structure, make this department remain relative malleation throughout, can reach very good sealed effect.
Description
Technical Field
The utility model relates to a selection powder machine technical field, concretely relates to cement selection powder machine rotor seal structure.
Background
The structure of the O-Sepa powder concentrator is a volute cyclone cylinder, a cage-shaped rotor is arranged in the cyclone cylinder, a circle of guide blades are arranged on the outer ring of the rotor, an air outlet pipe and a feed inlet with 90-degree elbows are arranged at the upper part of the rotor, and a coarse powder cone is arranged at the lower part of the rotor. The working principle is as follows: the selected materials enter from the feeding hole at the top and fall on the rotating material scattering disc, the materials are scattered out under the action of centrifugal force, collide with the buffer plate and change the direction to fall freely, and a material curtain is formed in an annular space between the rotor and the guide vanes. The primary air and the secondary air enter from two tangential air inlets which are 180 degrees formed at two sides of the shell, are guided by the guide vanes and are combined with the rotation action of the rotor to form a strong horizontal rotating flow separation field (vortex field), the material blocks can be broken by strong shearing force, conditions are created for efficient powder selection, and fine particles pass through the rotor vanes along with the air flow due to the centrifugal force, are sucked out from a middle air pipe and are collected by a dust remover, wherein the centrifugal force is smaller than the centripetal suction force of the air flow; in the falling process of the coarse particles, the coarse particles are collided with the guide vanes by centrifugal force greater than the centripetal suction force of the airflow and are continuously washed by the horizontal tangential airflow, and the fine powder adhered to the coarse particles is continuously washed down and enters the middle of the cage-shaped rotor. The qualified fine powder falling into the coarse powder of the ash bucket can be cleaned by three tertiary air flows uniformly distributed on the circumference of the ash bucket, so that the fine powder is separated out. The combined blade type seal used on the existing powder concentrator has poor sealing effect, causes air leakage and material leakage, is difficult to adjust the blade type seal, and has unstable product quality.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: the sealing effect is poor, the phenomena of air leakage and material leakage are caused, the blade type sealing adjustment is difficult, and the sealing structure of the rotor of the cement powder concentrator with good sealing effect is provided.
The utility model is realized by the following technical proposal, a sealing structure of a rotor of a cement powder concentrator, which comprises a powder concentrator shell and a cage-shaped rotor, wherein a labyrinth sealing structure and an interference sealing structure are arranged between the powder concentrator shell and the cage-shaped rotor;
the labyrinth seal structure comprises an upper seal body and a lower seal body, wherein the upper seal body and the lower seal body are annular, one surface of each annular ring is a plane, the other surface of each annular ring is provided with a plurality of circles of convex rings, the plane end of the upper seal body is fixedly connected with the powder selecting machine shell through a bolt assembly, the plane end of the lower seal body is fixedly connected with the upper surface of the cage-shaped rotor through a bolt assembly, and the convex rings of the upper seal body and the lower seal body are mutually inserted to form a uniform multi-loop gap;
the interference type sealing structure comprises a radial annular sealing body and an axial annular sealing body, the cross section of the radial annular sealing body is L-shaped, the radial annular sealing body is fixedly connected with a cage-shaped rotor through a bolt assembly, a gap is formed between the vertical end of the L-shaped sealing body and a powder selecting machine shell, the radial annular sealing body is connected with an air outlet shell of the powder selecting machine through the bolt assembly, the radial annular sealing body comprises a metal framework and an elastic rubber body of a coated metal framework, the bottom of the radial annular sealing body is provided with a sealing lip which is bent outwards and has no framework, and the sealing lip is in interference fit with the radial annular sealing body.
Furthermore, the number of the convex rings of the upper sealing body and the lower sealing body is two.
Further, the width of a gap formed by the convex rings of the upper sealing body and the lower sealing body is 8-12 mm.
Furthermore, the through hole of the axial annular sealing body for bolt connection is a waist-shaped hole in the vertical direction, so that the interference magnitude of the axial annular sealing body can be conveniently adjusted.
Further, the radial annular sealing body is made of polytetrafluoroethylene, and a polytetrafluoroethylene layer is coated at the interference fit position of the sealing lip and the radial annular sealing body.
Further, a positive pressure area is formed among the powder concentrator shell, the cage-shaped rotor, the labyrinth seal structure and the interference seal structure, and the positive pressure area is communicated with the atmosphere outside the powder concentrator shell through a positive pressure induced duct.
The utility model has the advantages that:
1. the utility model discloses be equipped with labyrinth seal structure and interference formula seal structure, two kinds of seal structure cooperations are used, can reach very good sealed effect.
2. Interference formula seal structure include two interference fit's seal, wherein the seal lip that the bottom of axial annular seal was equipped with, the seal lip is rolled over outwards and is had certain angle, when interference fit, just can play good sealed effect with the help of the elasticity of material itself.
3. Interference formula seal structure's interference fit department's material be polytetrafluoroethylene, can reduce the frictional force that interference fit produced, improve practical life.
4. Axial annular seal is used for bolted connection's through-hole to be the waist type hole of upper and lower direction, is convenient for adjust the magnitude of interference of axial annular seal
5. The positive pressure induced air pipe arranged between the double sealing structures is communicated with the atmosphere outside the powder selecting machine shell, so that the positive pressure is always kept relatively at the position, and the condition that cement powder which is not screened cannot pass through the sealing mechanism is further ensured.
Drawings
Fig. 1 is a schematic structural view of a cement powder concentrator according to the present invention;
fig. 2 is a partial enlarged view of a sealing structure of a rotor of the cement powder concentrator at the position I in fig. 1.
In the figure:
1, selecting a powder machine shell; 2 a cage rotor; 3, a labyrinth seal structure; 31 an upper sealing body; 32 lower seals; 33 a convex ring; 4, an interference type sealing structure; 41 a radial annular seal body; 42 an axial annular seal body; 421 a metal framework; 422 an elastic rubber body; 423 sealing lip; 424 a polytetrafluoroethylene layer; 43 waist-shaped holes; 5 a positive pressure area; 6 positive pressure induced draft tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-2, a rotor sealing structure of a cement powder concentrator comprises a powder concentrator shell 1 and a cage-shaped rotor 2, wherein a labyrinth sealing structure 3 and an interference sealing structure 4 are arranged between the powder concentrator shell 1 and the cage-shaped rotor 2;
the labyrinth seal structure 3 comprises an upper seal body 31 and a lower seal body 32, the upper seal body 31 and the lower seal body 32 are in a ring shape, one surface of the ring is a plane, the other surface of the ring is provided with a plurality of circles of convex rings 33, the plane end of the upper seal body 31 is fixedly connected with the powder concentrator shell 1 through a bolt assembly, the plane end of the lower seal body 32 is fixedly connected with the upper surface of the cage-shaped rotor 2 through the bolt assembly, the convex rings 33 of the upper seal body 31 and the lower seal body 32 are mutually inserted to form a uniform multi-loop gap, the inner cavity of the cage-shaped rotor 2 is separated from the powder concentrator shell 1, a first seal is formed, and cement powder is prevented from passing through the first seal;
the interference seal structure 4 comprises a radial annular seal body 41 and an axial annular seal body, the cross section of the radial annular seal body 41 is L-shaped, the radial annular sealing body 41 is fixedly connected with the cage-shaped rotor 2 through a bolt component, a gap is formed between the vertical end of the L shape and the powder concentrator shell 1, the radial annular sealing body 41 is connected with an air outlet shell of the powder concentrator through a bolt assembly, the radial annular sealing body 41 comprises a metal framework 421 and an elastic rubber body 422 coating the metal framework 421, the bottom of the radial annular sealing body 41 is provided with a section of frameless sealing lip 423 which is bent outwards, the sealing lip 423 is in interference fit with the radial annular sealing body 41, the sealing lip 423 is a part of the elastic rubber body 422, good following performance is achieved, a second seal is formed, and interference fit is formed to completely block cement powder, so that a more effective sealing effect is achieved.
In practical applications, the upper sealing body 31 and the lower sealing body 32 have two convex rings 33.
In practical application, the width of the gap formed by the convex rings 33 of the upper sealing body 31 and the lower sealing body 32 is 8-12 mm.
In practical application, the through hole of the axial annular sealing body for bolt connection is a waist-shaped hole 43 in the vertical direction, so that the interference of the axial annular sealing body can be conveniently adjusted.
In practical application, radial annular seal body 41 material is polytetrafluoroethylene, seal lip 423 has polytetrafluoroethylene layer 424 in the department cladding of the interference fit with radial annular seal body 41, and the base material of seal lip is rubber, and the top layer is the polytetrafluoroethylene layer, has guaranteed the elasticity effect promptly, can reduce the frictional force that interference fit produced, does not influence sealed effect.
In practical application, a positive pressure area 5 is formed among the powder selecting machine shell 1, the cage-shaped rotor 2, the labyrinth seal structure 3 and the interference seal structure 4, the positive pressure area 5 is communicated with the atmosphere outside the powder selecting machine shell 1 through a positive pressure induced duct 6, and because the working condition of the powder selecting machine is negative pressure, air continuously flows into the positive pressure area 5 from the positive pressure induced duct 6 and basically flows into the shell from a gap of the labyrinth seal structure, so that cement powder which is not screened is effectively prevented from directly escaping to an air outlet.
To sum up, a cement selection powder machine rotor seal structure utilize labyrinth seal structure 3 and interference formula seal structure 4, double seal structure can play very outstanding sealed effect in addition malleation induced duct 6.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (6)
1. The utility model provides a cement selection powder machine rotor seal structure which characterized in that: the powder concentrator comprises a powder concentrator shell (1) and a cage-shaped rotor (2), wherein a labyrinth seal structure (3) and an interference seal structure (4) are arranged between the powder concentrator shell (1) and the cage-shaped rotor (2);
the labyrinth seal structure (3) comprises an upper seal body (31) and a lower seal body (32), wherein the upper seal body (31) and the lower seal body (32) are circular rings, one surface of each circular ring is a plane, the other surface of each circular ring is provided with a plurality of circles of convex rings (33), the plane end of the upper seal body (31) is fixedly connected with the powder concentrator shell (1) through a bolt assembly, the plane end of the lower seal body (32) is fixedly connected with the upper surface of the cage-shaped rotor (2) through the bolt assembly, and the convex rings (33) of the upper seal body (31) and the lower seal body (32) are mutually inserted to form a uniform multi-loop gap;
interference formula seal structure (4) are including radial annular seal body (41) and axial annular seal body, the cross-section of radial annular seal body (41) is L shape, radial annular seal body (41) and cage shape rotor (2) pass through bolt assembly fixed connection, form the clearance between the vertical end of L shape and selection powder machine casing (1), radial annular seal body (41) are connected with the air outlet casing of selection powder machine through bolt assembly, radial annular seal body (41) include the elastic rubber body (422) of metal framework (421), cladding metal framework (421), radial annular seal body (41) bottom is equipped with the sealing lip (423) of outwards buckling of one section no skeleton, sealing lip (423) and radial annular seal body (41) interference fit.
2. The rotor sealing structure of the cement powder concentrator as claimed in claim 1, wherein: the number of the convex rings (33) of the upper sealing body (31) and the lower sealing body (32) is two.
3. The rotor sealing structure of the cement powder concentrator as claimed in claim 1, wherein: the gap width formed by the convex rings (33) of the upper sealing body (31) and the lower sealing body (32) is 8-12 mm.
4. The rotor sealing structure of the cement powder concentrator as claimed in claim 1, wherein: the through hole of the axial annular sealing body for bolt connection is a waist-shaped hole (43) in the vertical direction, so that the interference magnitude of the axial annular sealing body can be conveniently adjusted.
5. The rotor sealing structure of the cement powder concentrator as claimed in claim 1, wherein: the radial annular sealing body (41) is made of polytetrafluoroethylene, and the sealing lip (423) is coated with a polytetrafluoroethylene layer (424) at the position where the sealing lip is in interference fit with the radial annular sealing body (41).
6. A cement mill separator rotor seal structure according to any one of claims 1-5, characterized in that: a positive pressure area (5) is formed among the powder selecting machine shell (1), the cage-shaped rotor (2), the labyrinth sealing structure (3) and the interference sealing structure (4), and the positive pressure area (5) is communicated with the atmosphere outside the powder selecting machine shell (1) through a positive pressure induced draft pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120512734.3U CN214500033U (en) | 2021-03-10 | 2021-03-10 | Cement selection powder machine rotor seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120512734.3U CN214500033U (en) | 2021-03-10 | 2021-03-10 | Cement selection powder machine rotor seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214500033U true CN214500033U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120512734.3U Active CN214500033U (en) | 2021-03-10 | 2021-03-10 | Cement selection powder machine rotor seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214500033U (en) |
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2021
- 2021-03-10 CN CN202120512734.3U patent/CN214500033U/en active Active
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