Sealing device for executing mechanism of fireproof valve

Abstract

The utility model provides a sealing device of a fire damper executing mechanism, and belongs to the technical field of fire dampers. The sealing device of the fire damper actuating mechanism comprises an actuator body, a manual pull rod connected with the actuator body, a reset pull rod connected with the actuator body, a shift lever rotationally connected to the actuator body, a sensor rotating shaft sleeve installed on the actuator body, and a temperature sensor connected into the sensor rotating shaft sleeve. According to the utility model, the fire damper actuating mechanism is structurally decomposed and accurately measured, the air leakage part or area is independently sealed at multiple points, the sealing ring is arranged at the joint of the fuse link and the actuator body, and the flange sealing gasket is arranged on one side, far away from the reset pull rod, of the actuator body; the sealing cover used for sealing the track hole is hinged to the actuator body, dust can be effectively prevented from overflowing and entering the fireproof valve actuating mechanism, the problem of dust accumulation is solved, the maintenance cost and the production cost of the fireproof valve actuating mechanism are reduced, and the sealing performance of the whole device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire damper technical field, concretely relates to a fire damper actuator sealing device. BACKGROUND

[0002] The ventilation pipeline of high-rise building is generally provided with a fire damper. The fire damper comprises a valve body, a valve plate arranged in the passage of the valve body, a main shaft fixed on the valve plate, and an actuator connected with the main shaft. The actuator drives the valve plate to rotate by rotating the main shaft, so as to adjust the opening and closing of the valve body. When the valve plate is perpendicular to the side wall of the passage in the valve body, the valve plate blocks the passage, and the valve body is closed. When the valve plate is parallel to the side wall of the passage in the valve body, the valve body is fully opened.

[0003] At present, the basic structure of the fire damper used in the dust removal room is composed of a fire damper body and a fire damper actuator. The fire damper actuator and the fire damper body are connected and fixed by bolts. The connection area includes the middle shaft connecting rod of the fire damper rotary flap and the fuse piece of the fire damper, which are all provided by the fire damper actuator. Holes are opened on the fire damper body as mounting hole positions, thereby causing air leakage and powder leakage.

[0004] A fire damper actuator is disclosed in Chinese Utility Model Patent No. CN107228220A, published on October 3, 2017. The fire damper actuator comprises a stopper fixedly installed at the lower left corner of a base, an electromagnet installed above the stopper, a return spring connected above the electromagnet, a hook connected at the top end of the return spring, a button return spring connected at the left upper end of the hook, a reset button connected above the button return spring, the right end of the hook extending to the right end of the base, a first limiting portion provided at the right lower end of the hook, a support installed at the right lower end of the base, a support rod hingedly connected at the bottom end of the support, the top end of the support rod cooperating with the first limiting portion of the right lower end of the hook, a stop column provided at the left side of the support rod, a second limiting portion provided at the right side of the support rod, a cam cooperating with the stop column on the support rod, a main shaft of the fire damper installed at the center of the cam, a motor box installed at the right outer side of the base, a motor, a positioning disc, and a rotating shaft installed in the motor box, the other end of the rotating shaft extending out of the motor box and cooperating with the second limiting portion at the right side of the support rod. Although the above-mentioned patent can play a certain role in fire prevention and smoke prevention, it has poor sealing performance, which may cause air leakage and powder leakage. Dust overflow may enter the fire damper actuator, thereby causing dust accumulation in the actuator and leading to the failure of the actuator. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a fire damper actuator sealing device, which can perform multi-point sealing on the air leakage position of the fire damper actuator, effectively prevent dust overflow from entering the fire damper actuator, avoid dust accumulation, and reduce the maintenance cost of the fire damper actuator.

[0006] The utility model provides a fire damper actuator sealing device, including actuator body, with manual pull rod that actuator body is connected, with reset pull rod that actuator body is connected, rotate and connect on the actuator body on the dial stop lever, install in inductor pivot sleeve of actuator body, be connected in the temperature sensor of inductor pivot sleeve, the dial stop lever with the stop lever on temperature sensor each other stop, the one side of actuator body away from reset pull rod is provided with silica gel gasket, fuse link, the connecting place of fuse link with actuator body is provided with sealing washer, the track hole that the manual pull rod moves is provided on actuator body, and the sealing cover for sealing track hole is hinged to actuator body.

[0007] As the utility model's preferred, the outer wall of the actuator body is provided with a connecting seat, the sealing cover is provided with a connecting block connected with the connecting seat, and the connecting block is connected with the connecting seat through a connecting shaft.

[0008] As the utility model's preferred, the sealing cover is provided with a square sealing gasket on the side connected with the actuator body.

[0009] As the utility model's preferred, at least a part of the end of the connecting block is arc-shaped.

[0010] As the utility model's preferred, the reset pull rod is connected with the actuator body through an extension rod.

[0011] As the utility model's preferred, the actuator body is provided with a temperature sensing shaft fixing shaft, and the dial stop lever and the temperature sensing shaft fixing shaft are provided with a temperature sensing shaft tension spring.

[0012] As the utility model's preferred, the sealing cover is provided with a handle.

[0013] As the utility model's preferred, the thickness of the silica gel sealing gasket is greater than or equal to 3mm.

[0014] The fire damper actuator sealing device has the following beneficial effects:

[0015] 1、 the utility model discloses a fire damper actuator sealing device, including actuator body, with manual pull rod that actuator body is connected, with reset pull rod that actuator body is connected, rotate and connect on the actuator body on the dial stop lever, install in inductor pivot sleeve of actuator body, be connected in the temperature sensor of inductor pivot sleeve, the dial stop lever with the stop lever on temperature sensor each other stop, the one side of actuator body away from reset pull rod is provided with silica gel gasket, fuse link, the connecting place of fuse link with actuator body is provided with sealing washer, the track hole that the manual pull rod moves is provided on actuator body, and the sealing cover for sealing track hole is hinged to actuator body, can effectively prevent dust overflow into the fire damper actuator, the problem of dust accumulation, reduce the maintenance cost, production cost of fire damper actuator, improve the sealing property of whole device.

[0016] 2, the sealing cover of the utility model is hinged with the actuator body, only needs to turn over the sealing cover to operate the manual pull rod, one side of the sealing cover connected with the actuator body is provided with a square sealing gasket, improves the sealing property of the sealing cover to the track hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present utility model, not all embodiments. For ordinary skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0018] Fig. 1 It is a structural schematic view of a fire damper actuator sealing device of the utility model embodiment.

[0019] Fig. 2 It is a front view of a fire damper actuator sealing device of the utility model embodiment.

[0020] Fig. 3 It is a top view of a fire damper actuator sealing device of the utility model embodiment.

[0021] In the figure, 10, actuator body;11, silica gel sealing gasket;20, manual pull rod;21, sealing cover;22, connecting seat;23, connecting block;24, connecting shaft;30, reset pull rod;31, lengthened rod;40, push stop lever;50, fuse link;51, sealing ring;60, temperature sensor;61, inductor rotating shaft sleeve;70, fire damper body. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are some embodiments of the present utility model, not all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the present utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0023] Please refer to Figs. 1-3The utility model discloses an execution mechanism seal device of fire damper, including actuator body 10, with the manual pull rod 20 of actuator body 10 connection, with the reset pull rod 30 of actuator body 10 connection, rotate and connect on the actuator body 10 on the pole 40 of dialing stop, install in the inductor pivot sleeve of actuator body 10, connect in the temperature sensor 60 of inductor pivot sleeve, dialing stop pole 40 with the limiting rod on temperature sensor 60 each other stop, the one side of actuator body 10 away from reset pull rod 30 is provided with silica gel sealing washer 11, fuse link 50, and fuse link 50 is provided with sealing washer 51 at the junction of actuator body 10, and the track hole for the manual pull rod 20 movement is set up on actuator body 10, and the sealing cover 21 for sealing the track hole is hinged on actuator body 10.

[0024] In the utility model, through the structure decomposition of fire damper execution mechanism, accurate measurement is further determined the air leakage position, and the air leakage is sealed. The staff determines the air leakage position of fire damper execution mechanism mainly including three positions through multiple measurement and analysis: the junction of fuse link 50 and actuator body 10, the junction of fire damper body 70 and actuator body 10, and the track hole for the movement of manual pull rod 20. The sealing washer 51 is arranged at the junction of fuse link 50 and actuator body 10, and the sealing washer 51 is a customized temperature-resistant and wear-resistant rubber ring. The diameter of sealing washer 51 is customized and selected according to the diameter of fuse link 50, the diameter of sealing washer 51 needs to be less than the diameter of fuse link 50 in the range of 0.6mm-1.0mm, the junction of the outer ring of sealing washer 51 and actuator body 10 adopts annular contact connection, sealing washer 51 is embedded with fuse link 50, and is embedded with the mounting hole position of actuator body 10, so that the sealing effect is achieved. Fuse link 50 is inserted into the mounting hole in the fire damper execution mechanism. Before installation, the actuator body 10 is separated from the fire damper body 70, the fuse link 50 is separated from the actuator body 10, and then the sealing washer 51 and the fuse link 50 are installed in sequence.

[0025] Wherein, under the premise of not affecting the basic function of fire damper rotary flap, the silica gel sealing washer 11 is arranged at the connecting position of fire damper body 70 and actuator body 10, the connecting tightness between fire damper body 70 and actuator body 10 is improved, and the sealing property of fire damper execution mechanism is improved. The size structure of actuator body 10 and fire damper body 70 is determined, and the opening position of silica gel sealing washer 11 is determined according to the connecting mode of actuator body 10 and fire damper body 70, so that the installation of silica gel sealing washer 11 is facilitated. The thickness of silica gel sealing washer 11 is greater than or equal to 3mm.

[0026] In addition, the actuator body 10 is provided with a track hole for the movement of the manual pull rod 20, the actuator body 10 is hinged with a sealing cover 21 for sealing the track hole, the manual pull rod 20 can be operated by only turning the sealing cover 21, a square sealing gasket is arranged on the side of the sealing cover 21 connected with the actuator body 10, so as to improve the sealing performance of the sealing cover 21 on the track hole. The actuator body 10 is provided with a connecting seat 22, the sealing cover 21 is provided with a connecting block 23 connected with the connecting seat 22, the connecting block 23 and the connecting seat 22 are connected through a connecting shaft 24, so as to facilitate the turning of the sealing cover 21. At least a part of the end of the connecting block 23 is arc-shaped, so as to reduce the contact area of the connecting block 23 and the actuator body 10, and further reduce the friction between the connecting block 23 and the actuator body 10, so that the sealing cover 21 can be turned smoothly. In order to improve the sealing performance of the sealing cover 21, the sealing cover 21 is fixedly connected with a square sealing gasket. The reset pull rod 30 is connected with an extension rod 31 between the actuator body 10, so as to avoid the interference between the manually operated rod and the installed sealing cover 21 during the rotation of the manually operated rod.

[0027] Finally, the actuator body 10 is provided with a temperature sensing shaft fixing shaft, and a temperature sensing shaft tension spring is arranged between the gear shifting rod and the temperature sensing shaft fixing shaft. The other internal structures of the fire damper actuator of the utility model are described in the utility model patent CN206754553U, which will not be repeated here.

[0028] The above description can be implemented alone or in various combinations, and these variants are within the protection scope of the utility model.

[0029] It should be noted that in the description of the present application, the terms "upper end", "lower end", "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0030] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit it. Although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sealing device for a fire damper actuator, characterized in that: The actuator includes an actuator body (10), a manual lever (20) connected to the actuator body (10), a reset lever (30) connected to the actuator body (10), a stop lever (40) rotatably connected to the actuator body (10), a sensor shaft sleeve (61) installed on the actuator body (10), and a temperature sensor (60) connected to the sensor shaft sleeve (61). The stop lever (40) and the limit rod on the temperature sensor (60) stop each other. A silicone sealing gasket (11) and a fuse (50) are provided on the side of the actuator body (10) away from the reset lever (30). A sealing ring (51) is provided at the connection between the fuse (50) and the actuator body (10). A track hole for the manual lever (20) to move is provided on the actuator body (10). A sealing cover (21) for sealing the track hole is hinged on the actuator body (10).

2. The sealing device for a fire damper actuator as described in claim 1, characterized in that: A connecting seat (22) is provided on the outer wall of the actuator body (10), and a connecting block (23) connected to the connecting seat (22) is provided on the sealing cover (21). The connecting block (23) is connected to the connecting seat (22) via a connecting shaft (24).

3. The sealing device for a fire damper actuator as described in claim 2, characterized in that: A square sealing gasket is provided on the side of the sealing cover (21) that is connected to the actuator body (10).

4. The sealing device for a fire damper actuator as described in claim 2, characterized in that: At least a portion of the end of the connecting block (23) is arc-shaped.

5. The sealing device for a fire damper actuator as described in claim 1, characterized in that: An extension rod (31) is connected between the reset lever (30) and the actuator body (10).

6. The sealing device for a fire damper actuator as described in claim 1, characterized in that: A temperature-sensing rotating shaft is provided inside the actuator body (10), and a temperature-sensing rotating shaft tension spring is provided between the stop lever (40) and the temperature-sensing rotating shaft.

7. A sealing device for a fire damper actuator as described in claim 2, characterized in that: A handle is provided on the sealing cover (21).

8. The sealing device for a fire damper actuator as described in claim 1, characterized in that: The thickness of the silicone sealing gasket (11) is ≥3mm.

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