CN213419449U

CN213419449U - Seal structure of centrifugal fan is carried to buggy

Info

Publication number: CN213419449U
Application number: CN202022108773.5U
Authority: CN
Inventors: 彭伟锋; 王宏发; 曹亚民; 郭红卫; 白根
Original assignee: Gansu Demaoxiang Clean Energy Co ltd
Current assignee: Gansu Demaoxiang Clean Energy Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-11
Anticipated expiration: 2030-09-24

Abstract

The utility model belongs to the technical field of sealing structures of centrifugal fans, in particular to a sealing structure of a centrifugal fan for conveying pulverized coal, which comprises a flow collector, the right side of the current collector is provided with an impeller, the outer side walls of the opposite ends of the current collector and the impeller are respectively and fixedly connected with a large sealing ring and a small sealing ring, the right side of the big sealing ring is provided with a tooth socket sealing ring, the small sealing ring is tightly attached to the inner part of the tooth socket sealing ring, a plurality of speed reducing tooth sockets are arranged on the left side in the tooth socket sealing ring, the plurality of speed reducing tooth sockets are inclined towards the lower left side from top to bottom, the inner angles of the plurality of speed reducing tooth sockets are acute angles, the joints of the plurality of speed reducing tooth sockets are obtuse angles, therefore, the sealing structure can prevent the coal powder from leaking and simultaneously can guide the coal powder accumulated between the tooth socket sealing ring and the small sealing ring into the impeller, so that the problem that the coal powder overflows through gaps due to excessive coal powder entering the sealing part is avoided.

Description

Seal structure of centrifugal fan is carried to buggy

Technical Field

The utility model relates to a centrifugal fan's seal structure technical field, concretely relates to centrifugal fan's seal structure is carried to buggy.

Background

In chemical, electric, cement, metallurgy and other industrial production, a high-pressure centrifugal fan is generally used for conveying pulverized coal to a combustion chamber for full combustion. Because the wind pressure of the pulverized coal conveying fan is very high, the efficiency of the pulverized coal conveying fan is ensured by the fit clearance between the current collector and the impeller, the efficiency is low when the clearance is large, and the efficiency is high when the clearance is small; therefore, a sealing device is usually disposed at the matching position of the current collector and the impeller to reduce internal leakage and improve the efficiency of the pulverized coal conveying centrifugal fan.

The utility model discloses a centrifugal fan's seal structure is carried to buggy that CN206257073U discloses, when the looping labyrinth sealing washer prevented that the buggy from leaking, when getting into the buggy between labyrinth ditch and the little sealing washer for a long time too much, it leads to the problem of the buggy between the two still through the gap overflow between the two to strike through the air current easily.

SUMMERY OF THE UTILITY MODEL

For solving the problem that provides in the above-mentioned background art, the utility model provides a centrifugal fan's seal structure is carried to buggy has the convenient inside of leading-in to the impeller to piling up the buggy between tooth's socket sealing washer and the little sealing washer when preventing that the buggy from leaking, and the too much buggy that avoids the sealing to get into leads to the characteristics of the problem that the buggy passes through the gap overflow.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pulverized coal conveying centrifugal fan's seal structure, includes the collector, the right side of collector is provided with the impeller, the lateral wall difference fixedly connected with big sealing washer of the relative one end of collector and impeller and little sealing washer, the tooth's socket sealing washer is installed on the right side of big sealing washer, the inside of little sealing washer and tooth's socket sealing washer is closely laminated, a plurality of speed reduction tooth's socket has been seted up on the inside left side of tooth's socket sealing washer, and is a plurality of speed reduction tooth's socket from the top down is to left side below slope form in proper order, and is a plurality of the interior angle of speed reduction tooth's socket all is.

In order to avoid influencing the problem that the tooth's socket sealing washer stops and the water conservancy diversion to further conveniently dismantle, conduct the utility model relates to a centrifugal fan's seal structure is preferred is carried to the buggy, the shrinkage pool has been seted up in the left side of big sealing washer, the inside left side of shrinkage pool can be dismantled and be connected with the bolt, can dismantle through the bolt between big sealing washer and the tooth's socket sealing washer and be connected.

In order to further play sealed effect and prevent trace buggy to the upper end and the right side of little sealing washer and leak, conduct the utility model relates to a centrifugal fan is carried to buggy's seal structure is preferred, the inside top of tooth's socket sealing washer is seted up with little sealing washer assorted joint recess, the upper end of little sealing washer extends to the inside of joint recess and closely laminates.

For the left side of convenient bolt spiral income tooth's socket sealing washer, conduct the utility model relates to a centrifugal fan is carried to buggy's seal structure is preferred, the mounting hole has been seted up in the left side of tooth's socket sealing washer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this kind of centrifugal fan's seal structure is carried to buggy, this seal structure further prevents the buggy to big sealing washer and little sealing washer when leaking, the buggy at first decelerates through a plurality of speed reduction tooth's sockets on the inside right side of tooth's socket sealing washer, the air current that carries the buggy decelerates in a plurality of speed reduction tooth's sockets of below left slope form in proper order, flow through behind the inside lower extreme of speed reduction tooth's socket when slowing down speed, after more buggy that falls, because the interior angle of a plurality of speed reduction tooth's sockets all is the acute angle, and then the buggy that falls of the upper accumulation of speed reduction tooth's socket is because the action of gravity drops in the impeller, thereby this seal structure prevents that the buggy from leaking and conveniently leading-in the inside of impeller to piling up the buggy between tooth's socket sealing washer and the little sealing.

2. This kind of centrifugal fan's seal structure is carried to buggy, when needs are dismantled the tooth's socket sealing washer from the right side of big sealing washer, twist the bolt, and then dismantle the tooth's socket sealing washer, this kind of shrinkage pool is located the left dismantlement connected mode of big sealing washer and avoids influencing the problem that the tooth's socket sealing washer stops and the water conservancy diversion to further conveniently dismantle.

3. This kind of centrifugal fan's seal structure is carried to buggy, joint recess forms the joint to little sealing washer to the joint recess further plays sealed effect and prevents that trace buggy from leaking to the upper end and the right side of little sealing washer.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a sectional view of a sealing structure of a centrifugal blower for conveying pulverized coal of the present invention;

fig. 2 is a cross-sectional view taken along the line a of the present invention;

fig. 3 is a sectional view of the tooth socket sealing ring of the present invention.

In the figure, 1, current collector; 101. an impeller; 2. a large seal ring; 201. a small seal ring; 202. concave holes; 3. a tooth socket sealing ring; 301. clamping the groove; 302. a deceleration gullet; 303. mounting holes; 4. and (4) bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a pulverized coal conveying centrifugal fan's seal structure, including collector 1, the right side of collector 1 is provided with impeller 101, the lateral wall of the relative one end of collector 1 and impeller 101 is fixedly connected with big sealing washer 2 and little sealing washer 201 respectively, tooth's socket sealing washer 3 is installed on the right side of big sealing washer 2, little sealing washer 201 closely laminates with the inside of tooth's socket sealing washer 3, a plurality of speed reduction tooth's sockets 302 have been seted up on the inside left side of tooth's socket sealing washer 3, a plurality of speed reduction tooth's socket 302 from the top down are to left below slope form in proper order, the interior angle of a plurality of speed reduction tooth's sockets 302 all is the.

In this embodiment: when this seal structure further stops buggy to big sealing washer 2 and little sealing washer 201 to leak, the buggy at first decelerates through a plurality of speed reduction tooth's socket 302 on the inside right side of tooth's socket sealing washer 3, the air current that carries the buggy decelerates in a plurality of speed reduction tooth's socket 302 of below left slope form in proper order, the inside lower extreme back of deceleration tooth's socket 302 is flowed through to in the time of reducing speed, after more buggy that falls, because the interior angle of a plurality of speed reduction tooth's sockets 302 all is the acute angle, and then the buggy that falls of the upper accumulation of speed reduction tooth's socket 302 is because the action of gravity drops in impeller 101, thereby this seal structure prevents that buggy from leaking and conveniently leads to the inside of impeller 101 to piling up the buggy between tooth's socket sealing washer 3 and the little sealing washer 201, the too much.

As a technical optimization scheme of the utility model, shrinkage pool 202 has been seted up in the left side of big sealing washer 2, and the inside left side of shrinkage pool 202 can be dismantled and be connected with bolt 4, can dismantle through bolt 4 between big sealing washer 2 and the tooth's socket sealing washer 3 and be connected.

In this embodiment: when needs are dismantled tooth's socket sealing washer 3 from the right side of big sealing washer 2, twist bolt 4, and then dismantle tooth's socket sealing washer 3, this kind of shrinkage pool 202 is located the left dismantlement connected mode of big sealing washer 2 and avoids influencing the problem that tooth's socket sealing washer 3 stops and the water conservancy diversion to further conveniently dismantle.

As a technical optimization scheme of the utility model, tooth's socket sealing washer 3's inside top seted up with little sealing washer 201 assorted joint recess 301, the upper end of little sealing washer 201 extends to joint recess 301's inside and closely laminates.

In this embodiment: the clamping groove 301 forms clamping connection with the small sealing ring 201, and the clamping groove 301 further plays a sealing role on the upper end and the right side of the small sealing ring 201 and prevents leakage of trace coal dust.

As a technical optimization scheme of the utility model, mounting hole 303 has been seted up in the left side of tooth's socket sealing washer 3.

In this embodiment: when the bolt 4 is screwed into the left side of the spline seal ring 3, the mounting hole 303 facilitates the screwing of the bolt 4 into the left side of the spline seal ring 3.

The utility model discloses a theory of operation and use flow: when the sealing structure further prevents coal dust from leaking from the large sealing ring 2 and the small sealing ring 201, coal dust firstly decelerates through a plurality of deceleration tooth sockets 302 on the right side inside the tooth socket sealing ring 3, air flow carrying coal dust decelerates in a plurality of deceleration tooth sockets 302 which are inclined towards the left and the lower sides in sequence, the speed is reduced and the air flow flows through the lower end inside the deceleration tooth socket 302, more coal dust is accumulated, the inner angles of the deceleration tooth sockets 302 are acute angles, the coal dust accumulated on the deceleration tooth sockets 302 drops into the impeller 101 under the action of gravity, the clamping groove 301 forms clamping connection on the small sealing ring 201, the clamping groove 301 further plays a sealing role on the upper end and the right side of the small sealing ring 201 and prevents trace coal dust from leaking, when the tooth socket sealing ring 3 needs to be disassembled from the right side of the large sealing ring 2, the bolt 4 is screwed, the sealing ring 3 is disassembled, and the sealing ring 3 is disassembled and the concave hole 202 is positioned on the left side of Powder stopping and flow guiding.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a pulverized coal conveying centrifugal fan's seal structure, includes collector (1), the right side of collector (1) is provided with impeller (101), its characterized in that: collector (1) and the lateral wall of the relative one end of impeller (101) be fixedly connected with big sealing washer (2) and little sealing washer (201) respectively, tooth's socket sealing washer (3) are installed on the right side of big sealing washer (2), the inside of little sealing washer (201) and tooth's socket sealing washer (3) is closely laminated, a plurality of speed reduction tooth's socket (302) have been seted up on the inside left side of tooth's socket sealing washer (3), and are a plurality of speed reduction tooth's socket (302) from the top down is to left side below slope form in proper order, and is a plurality of the interior angle of speed reduction tooth's socket (302) all is the acute angle, and is a plurality of speed reduction tooth.

2. The seal structure of the pulverized coal conveying centrifugal fan according to claim 1, characterized in that: shrinkage pool (202) have been seted up in the left side of big sealing washer (2), the inside left side of shrinkage pool (202) can be dismantled and be connected with bolt (4), can dismantle through bolt (4) between big sealing washer (2) and tooth's socket sealing washer (3) and be connected.

3. The seal structure of the pulverized coal conveying centrifugal fan according to claim 1, characterized in that: the inside top of tooth's socket sealing washer (3) is seted up with little sealing washer (201) assorted joint recess (301), the upper end of little sealing washer (201) extends to the inside of joint recess (301) and closely laminates.

4. The seal structure of the pulverized coal conveying centrifugal fan according to claim 1, characterized in that: and a mounting hole (303) is formed in the left side of the tooth socket sealing ring (3).