CN210830724U

CN210830724U - Shaft end sealing device for fireproof smoke exhaust valve

Info

Publication number: CN210830724U
Application number: CN201921684071.2U
Authority: CN
Inventors: 张玉杰
Original assignee: Xinjiang Juntai Electromechanical Engineering Co ltd
Current assignee: Xinjiang Juntai Electromechanical Engineering Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-23
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a shaft end sealing device for fireproof smoke-discharging valve, which comprises a fixed strip, the section of the fixed strip is U-shaped, the fixed strip is fixedly connected at the inner side of the valve body outer frame, the lower side wall of the fixed strip is provided with a through groove corresponding to the valve rotating shaft, the lower end of the fixed strip is provided with a movable strip, the section of the movable strip is U-shaped, the front and back side walls of the movable strip are respectively positioned at the outer surface of the fixed strip, and the side wall of the movable strip is closely contacted with the outer surface of the fixed strip, the utility model effectively avoids the problem that the air tightness is influenced when the door panel is heated and axial deformation is generated by arranging the movable strip at the lower end of the fixed strip, and simultaneously, the movable plate is arranged in the strip groove by arranging the strip groove and the movable plate in the strip groove, so that the movable plate can slide in the strip groove, the movable strip can not leak air due to the movement of the movable plate, thereby keeping good air tightness.

Description

Shaft end sealing device for fireproof smoke exhaust valve

Technical Field

The utility model relates to a valve shaft end sealing device technical field, concrete field is a shaft end sealing device for fire prevention smoke damper.

Background

The valves arranged in the ventilation, air conditioning and smoke exhaust systems of buildings such as basements, markets, high-rise buildings and subways are in an open state at ordinary times, and when smoke in a pipeline reaches a certain temperature in a fire disaster, the valves are closed, so that the requirements of air leakage and fire resistance integrity can be met within a certain time, and the purpose of preventing the fire disaster from spreading is achieved. The sealing device used at present has the defect of poor sealing effect due to the fact that the sealing device is a rigid device, and if high temperature is met, the door plate expands to cause the door plate to be deformed by heating, a few sealing devices adopt special structures to avoid the door plate to be deformed by heating when the door plate expands axially, but when the door plate is deformed in the direction perpendicular to the axial direction due to the influence of the high temperature, the door plate shaft can move along with the door plate shaft, so that the device can be damaged to cause the problem of affecting the air tightness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shaft end sealing device for fire prevention smoke damper to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a shaft end sealing device for a fireproof smoke exhaust valve comprises a fixed strip, wherein the section of the fixed strip is U-shaped, the fixed strip is fixedly connected to the inner side of a valve body outer frame, a through groove is formed in the position, corresponding to a valve rotating shaft, of the lower side wall of the fixed strip, a movable strip is arranged at the lower end of the fixed strip, the section of the movable strip is U-shaped, the front side wall and the rear side wall of the movable strip are respectively located on the outer surface of the fixed strip, the side wall of the movable strip is in close contact with the outer surface of the fixed strip, a gap is reserved between the lower side wall of the movable strip and the lower side wall of the fixed strip, a strip-shaped through groove is formed in the position, corresponding to the through groove, of the lower side wall of the movable strip, a strip-shaped groove is transversely formed in the inner side wall of the strip-shaped groove, a movable plate is slidably connected to the inner surface of the strip-, the end face of the movable plate is provided with a shaft sleeve in a penetrating mode corresponding to the strip-shaped through groove, the inner side wall of the shaft sleeve is in close contact with the valve rotating shaft, and a spring is arranged between the fixed strip and the movable strip.

Preferably, the outer surfaces of the front side wall and the rear side wall of the fixed strip are respectively provided with a sliding groove, the inner surfaces of the front side wall and the rear side wall of the movable strip are provided with a sliding block corresponding to the sliding grooves, and a gap is reserved between the outer surface of the sliding block and the inner surface of the sliding groove.

Preferably, the lower surface of the movable strip is provided with a sealing strip.

Preferably, the cross sections of the sliding block and the sliding groove are isosceles trapezoids.

Preferably, a plurality of springs are arranged between the movable plate and the strip-shaped groove.

Preferably, the upper surfaces of the inner side wall and the outer side wall of the movable strip are provided with round corners.

Preferably, the junction of the upper side wall of the fixing strip and the front and rear side walls of the fixing strip is provided with a fillet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a fire prevention is axle head sealing device for smoke damper, through set up the activity strip at the fixed strip lower extreme, thereby effectively avoided the door plant to be heated, when producing axial deformation, the problem of the influence gas tightness that the device takes place, simultaneously through set up the bar groove on the activity strip, and set up the fly leaf in the inside in bar groove, make the fly leaf can produce the slip in the inside in bar groove, simultaneously at gliding in-process, the fly leaf can cover the bar through groove all the time, make the activity strip can not appear leaking out because the removal of fly leaf, thereby remain good gas tightness all the time, fix on the fly leaf through the axle sleeve with the door panel axle is solid, make when the door panel produces to warp and drives the door panel axle and produce the displacement, the displacement of forehead door panel axle can effectively be offset through the slip in the bar groove to the fly leaf, thereby keep.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of embodiment 1 of the present invention;

fig. 2 is a schematic left-side sectional structure view of embodiment 1 of the present invention;

fig. 3 is a schematic top view of a cross-sectional structure of embodiment 1 of the present invention;

fig. 4 is a sectional structure and a schematic view of a top view sectional structure of a movable strip according to embodiment 1 of the present invention;

fig. 5 is a schematic left-side sectional structure view of embodiment 2 of the present invention.

In the figure: 1-fixed strip, 2-through groove, 3-movable strip, 4-strip-shaped through groove, 5-strip-shaped groove, 6-movable plate, 7-shaft sleeve, 8-spring, 9-sliding groove, 10-sliding block and 11-sealing strip.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a shaft end sealing device for a fireproof smoke exhaust valve comprises a fixing strip 1, wherein the section of the fixing strip 1 is U-shaped, the fixing strip 1 is fixedly connected to the inner side of a valve body outer frame, a positioning hole can be reserved on the upper side wall of the fixing strip 1, the fixing strip 1 is convenient to install, the length of the fixing strip 1 is the same as that of the valve body outer frame, so that a nuclear device can completely cover the space between a door plate and the valve body outer frame, good sealing effect is guaranteed, a through groove 2 is arranged on the lower side wall of the fixing strip 1 corresponding to a valve rotating shaft, the valve rotating shaft penetrates through the through groove 2, it needs to be noted that the through groove 2 is slightly larger than the valve rotating shaft, so that when the valve rotating shaft generates displacement vertical to the axial direction, the through groove 2 cannot be in contact with the fixing strip 1, and influence is generated on the fixing of the fixing strip 1, a movable strip 3 is arranged at the, the front and back side walls of the movable strip 3 are respectively positioned on the outer surface of the fixed strip 1, the side walls of the movable strip 3 are in close contact with the outer surface of the fixed strip 1, the movable strip 3 can slide up and down relative to the fixed strip 1, a gap is reserved between the lower side wall of the movable strip 3 and the lower side wall of the fixed strip 1, so that the movable strip 3 can slide up and down relative to the fixed strip 1, a strip-shaped through groove 4 is arranged at the position, corresponding to the through groove 2, of the lower side wall of the movable strip 3, a strip-shaped groove 5 is transversely arranged on the inner side wall of the strip-shaped through groove 4, a movable plate 6 is connected to the inner surface of the strip-shaped groove 5 in a sliding manner, a gap is reserved between the side wall of the movable plate 6 and the side wall of the strip-shaped groove 5, so that the movable plate 6 can slide in the strip-shaped groove, the fly leaf 6 should cover all the time the logical groove 4 of bar to make the device keep encapsulated situation constantly, just the upper and lower surface of fly leaf 6 respectively in the upper and lower surface in close contact with of bar groove 5 guarantees the device leakproofness, the terminal surface of fly leaf 6 corresponds logical groove 4 department of bar runs through and is equipped with axle sleeve 7, the inside wall and the valve shaft in close contact with of axle sleeve 7, the valve shaft can be connected with the axle sleeve rotation, the fixed strip 1 with be equipped with spring 8 between the activity strip 3, spring 8 can be equipped with a plurality ofly, thereby guarantees activity strip 3 produces sufficient holding down force to the door plant for keep in close contact between the lower surface of activity strip 3 and the door plant, thereby guarantees the device leakproofness.

Specifically, the lower surface of the movable strip 3 is provided with a sealing strip 11, so that the sealing strip 11 is in contact with the upper surface of the door panel, thereby increasing the sealing performance of the device.

Particularly, be equipped with a plurality of springs between fly leaf 6 and the bar groove 5 to guarantee the location of fly leaf 6 makes fly leaf 6 is located the centre of bar groove 5, promptly fly leaf 6 all has mobilizable room all around, and can not produce after the installation, one side lateral wall of fly leaf 6 with the lateral wall in bar groove 5 produces the contact, and when the valve pivot produced the displacement to this direction, makes to exert between the effort on movable strip 3 for the device produces and damages and influences the gas tightness.

Particularly, the inner and outer side wall upper surfaces of the movable strip 3 are provided with round corners, when the door panel is heated to expand to generate axial displacement, the upper surfaces of the front and rear side walls of the movable strip 3 may contact with the fixed strip 1, and the front and rear side wall upper surfaces of the movable strip 3 are prevented from damaging the fixed strip 1.

Particularly, the junction of the upper side wall of the fixing strip 1 and the front and rear side walls of the fixing strip 1 is provided with a fillet, so that the damage caused by the generation of large stress at the junction of the upper side wall of the fixing strip 1 and the front and rear side walls of the fixing strip 1 is avoided.

The working principle is as follows: the utility model discloses at the during operation, the rotatory door plant of closing of valve pivot, when the door plant is heated and produces the inflation, the axial deformation that produces leads to it to the 3 production stresses of activity strip, this moment because activity strip 3 can slide from top to bottom relatively fixed strip 1, thereby offset the stress of production, avoid producing the damage, and when the door plant produces perpendicular to axial direction's deformation, and activity strip 3 produces the extrusion to the door plant under spring 8's effect, namely keep in close contact with between door plant and the activity strip 3, can not produce great stress equally, and when producing deformation and leading to the pivot to produce the displacement because of the door plant, fix on axle sleeve 7 because of the pivot, and axle sleeve 7 fixes on fly leaf 6, fly leaf 6 produced the slip in bar groove 5 promptly this moment, thereby avoid the pivot directly to produce stress to activity strip 3 directly, the device damage has been avoided.

Example 2

Referring to fig. 5, the difference between the present embodiment and embodiment 1 is: the outer surfaces of the front side wall and the rear side wall of the fixed strip 1 are respectively provided with a sliding groove 9, the inner surfaces of the front side wall and the rear side wall of the movable strip 3 correspond to the sliding grooves 9, and a sliding block 10 is arranged at the position, corresponding to the sliding groove 9, of the inner surface of the sliding block 10, a gap is reserved between the outer surface of the sliding block 10 and the inner surface of the sliding groove 9, so that the integrity of the device is ensured, and the air tightness between.

Specifically, the cross sections of the sliding block 10 and the sliding groove 9 are both isosceles trapezoids, so that the air tightness of the device is further improved.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shaft end sealing device for fire prevention smoke damper, includes fixed strip (1), its characterized in that: the cross section of the fixed strip (1) is U-shaped, the fixed strip (1) is fixedly connected to the inner side of the outer frame of the valve body, the lower side wall of the fixed strip (1) is provided with a through groove (2) corresponding to the rotating shaft of the valve, the lower end of the fixed strip (1) is provided with a movable strip (3), the cross section of the movable strip (3) is U-shaped, the front side wall and the rear side wall of the movable strip (3) are respectively positioned on the outer surface of the fixed strip (1), the side wall of the movable strip (3) is in close contact with the outer surface of the fixed strip (1), a gap is reserved between the lower side wall of the movable strip (3) and the lower side wall of the fixed strip (1), the lower side wall of the movable strip (3) corresponds to the through groove (2), the inner side wall of the through groove (4) is transversely provided with a strip-shaped groove (5), and the inner surface of the strip-shaped groove, the lateral wall of fly leaf (6) with leave the gap between the lateral wall of bar groove (5), just the upper and lower surface of fly leaf (6) respectively in the upper and lower surface in close contact with of bar groove (5), the terminal surface of fly leaf (6) corresponds the bar is led to groove (4) and is located to run through and be equipped with axle sleeve (7), the inside wall and the valve shaft in close contact with of axle sleeve (7), fixed strip (1) with be equipped with spring (8) between activity strip (3).

2. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 1, wherein: the outer surfaces of the front side wall and the rear side wall of the fixed strip (1) are respectively provided with a sliding groove (9), the inner surfaces of the front side wall and the rear side wall of the movable strip (3) correspond to the sliding grooves (9) and are provided with a sliding block (10), and a gap is reserved between the outer surface of the sliding block (10) and the inner surface of the sliding groove (9).

3. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 1, wherein: the lower surface of the movable strip (3) is provided with a sealing strip (11).

4. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 2, wherein: the cross sections of the sliding block (10) and the sliding groove (9) are isosceles trapezoids.

5. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 1, wherein: a plurality of springs are arranged between the movable plate (6) and the strip-shaped groove (5).

6. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 1, wherein: the upper surfaces of the inner side wall and the outer side wall of the movable strip (3) are provided with round corners.

7. The shaft end sealing device for the fire and smoke exhaust valve as claimed in claim 1, wherein: the junction of the upper side wall of the fixing strip (1) and the front and rear side walls of the fixing strip (1) is provided with a fillet.