Flue baffle transmission sealing structure

Abstract

The utility model discloses a flue baffle transmission sealing structure which comprises a baffle and a flue, the baffle is arranged in the flue and matched with the flue, a driven shaft is arranged on the baffle, a baffle shaft sleeve is arranged between the driven shaft and the flue, one side of the baffle shaft sleeve is connected with an isolation hood through a bolt matched with a nut, and the other side of the baffle shaft sleeve is connected with the isolation hood. A spacer is arranged between the isolation cover and the baffle shaft sleeve, a magnetic coupler is arranged at the right end of the driven shaft, a support is arranged on the flue in a welded mode, a supporting plate is fixed to the support in a welded mode, and an executing mechanism mounting plate is fixed to the supporting plate through bolts. The utility model has the beneficial effects that the traditional dynamic seal is changed into static seal, the sealing property is not influenced by the rotation of the shaft, and the magnetic coupler and the outer magnet are adopted for transmission, so that the leakage of a medium conveyed in a flue can be effectively prevented, mechanical contact is avoided, the abrasion of parts is avoided, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of petrochemical industry, especially a flue baffle transmission sealing structure. BACKGROUND

[0002] The flue baffle in the field of petrochemical industry is an opening and closing device similar to a valve structure on the flue gas pipeline of a device, which is mainly used for adjusting and closing the flow of the flue. The flue baffle transmission sealing structure is applied between the driving device (such as an electric actuator) and the baffle shaft to ensure that the baffle can be accurately opened and closed to adjust the ventilation volume and flue gas emission of the boiler.

[0003] As shown in the accompanying drawings, Figure 1 At present, the sealing of the transmission shaft (4) of the actuator (5) on the flue baffle and the baffle body (1) is in the form of packing (2) plus a pressurized cover (3), and due to the characteristics of the packing (2), the elasticity of the packing gradually decreases after the device is operated for a period of time, and most baffles will have different degrees of leakage. UTILITY MODEL CONTENTS

[0004] The flue baffle transmission sealing structure provided by the application changes the traditional dynamic sealing into static sealing, the sealing property is not affected by the rotation of the shaft, the magnetic coupling and the external magnet are used for transmission, which can effectively prevent the leakage of the medium conveyed in the flue and does not have mechanical contact, avoids the wear of the components, and prolongs the service life of the equipment.

[0005] The flue baffle transmission sealing structure provided by the application includes a baffle and a flue, the baffle is arranged in the flue and cooperates with the flue, a driven shaft is arranged on the baffle, a baffle shaft sleeve is arranged between the driven shaft and the flue, an isolation cover is connected to one side of the baffle shaft sleeve through a bolt and a nut, a gasket is arranged between the isolation cover and the baffle shaft sleeve, a magnetic coupling is arranged at the right end of the driven shaft, a support is arranged on the flue in a welded manner, a supporting plate is fixed on the support in a welded manner, an actuator mounting plate is fixed on the supporting plate through a bolt, an actuator is fixed on the actuator mounting plate through a bolt, a driving shaft is connected to the actuator through a coupling, and an external magnet is arranged on the driving shaft.

[0006] Further, the center lines of the driven shaft, the magnetic coupling, the external magnet, the driving shaft, and the coupling are located on the same straight line.

[0007] Further, the magnetic coupling is connected and fixed in a key groove manner, and the magnetic coupling is located on the inner side of the isolation cover and has a gap between the isolation cover.

[0008] Further, gaps are uniformly left between the outer magnet and the isolation cover, the outer magnet is connected and fixed with the driving shaft by welding, and the inner surface of the outer magnet is parallel to the outer surface of the magnetic coupling.

[0009] Further, the gasket is made of sealing rubber gasket, the gasket is locked by bolts and nuts, and the gasket is tightly formed with the baffle shaft sleeve and the isolation cover to form static sealing.

[0010] Further, the bearing is arranged between the driven shaft and the baffle shaft sleeve, the bearing is arranged at the center position of the baffle shaft sleeve, and the baffle shaft sleeve is embedded in the flue and is sealed and fixed by welding.

[0011] Further, the bracket is parallel to the driven shaft, and the supporting plate is perpendicular to the bracket.

[0012] The one or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages:

[0013] The baffle shaft sleeve and the isolation cover are sealed by the gasket, the sealing gasket is convenient to replace, the traditional dynamic sealing is changed into static sealing, the sealing performance is more reliable and is not affected by the rotation of the shaft.

[0014] The magnetic coupling and the outer magnet are adopted for transmission, the medium leakage in the flue is effectively prevented, the safety of the operation of the equipment is greatly improved, mechanical contact does not exist, the wear of the parts is avoided, and the service life of the equipment is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of a traditional flue baffle transmission sealing structure.

[0016] Figure 2 It is an assembly schematic view of the utility model.

[0017] Figure 3 It is a specific structure schematic view of the utility model.

[0018] Figure 4 It is Figure 3 It is a specific structure schematic view of the utility model. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the description of the drawings and the specific embodiments. EMBODIMENT

[0020] The utility model provides a flue baffle drive seal structure, including baffle 1 and flue 2, baffle 1 is arranged in the flue 2 and is matched with flue 2, baffle 1 is provided with driven shaft 8, driven shaft 8 is provided with baffle shaft sleeve 9 between flue 2, one side of baffle shaft sleeve 9 is connected with isolation cover 11 through bolt cooperation nut, isolation cover 11 is provided with gasket 10 between baffle shaft sleeve 9, driven shaft 8 right end is provided with magnetic coupling 12, flue 2 is provided with support 3 through the mode of welding, support 3 is fixed with the supporting plate 301 through the mode of welding, the supporting plate 301 is fixed with actuator mounting plate 401 through bolt, actuator mounting plate 401 is fixed with actuator 4 through bolt, actuator 4 is connected with driving shaft 6 through coupling 5, driving shaft 6 is provided with outer magnet 13.

[0021] The technical scheme in the above embodiment of the application has at least the following technical effects or advantages:

[0022] The gasket 10 is arranged between the baffle shaft sleeve 9 and the isolation cover 11 to seal them, which facilitates replacement of the sealing gasket, changes the traditional dynamic seal into a static seal, and makes the sealing performance more reliable and not affected by the rotation of the shaft. EMBODIMENT

[0023] The center lines of the driven shaft 8, the magnetic coupling 12, the outer magnet 13, the driving shaft 6 and the coupling 5 are located on the same straight line; the magnetic coupling 12 is connected and fixed in the form of a key groove, and the magnetic coupling 12 is located on the inner side of the isolation cover 11 and has a gap with the isolation cover 11; the outer magnet 13 has a uniform gap with the isolation cover 11, the outer magnet 13 is connected and fixed with the driving shaft 6 in the form of welding, and the inner surface of the outer magnet 13 is parallel to the outer surface of the magnetic coupling 12; the gasket 10 is made of a sealing rubber gasket, and the gasket 10 is locked by bolts and nuts to tightly adhere to the baffle shaft sleeve 9 and the isolation cover 11 to form a static seal; the bearing 7 is arranged between the driven shaft 8 and the baffle shaft sleeve 9, the bearing 7 is arranged at the center position of the baffle shaft sleeve 9, the baffle shaft sleeve 9 is embedded in the flue 2 and is fixed by welding; the support 3 is parallel to the driven shaft 8, and the supporting plate 301 is perpendicular to the support 3.

[0024] The technical scheme in the above embodiment of the application has at least the following technical effects or advantages:

[0025] The gasket 10 is fixed between the isolation cover 11 and the baffle shaft sleeve 9 through locking of the bolt and the nut, is convenient and fast to fix, and is convenient to disassemble and replace; the transmission components are located on the same straight line, the actuator 4 is fixed through the support 3 cooperating with the supporting plate 301, stability is guaranteed, and normal operation can be effectively maintained.

[0026] Although preferred embodiments of the present application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once they have been given the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0027] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A flue damper drive seal structure comprising a damper and a flue, said damper being disposed in and cooperating with the flue, characterized by, The baffle is provided with a driven shaft, the driven shaft is provided with a baffle shaft sleeve between the flue, one side of the baffle shaft sleeve is connected with an isolation cover through a bolt matched with a nut, a gasket is arranged between the isolation cover and the baffle shaft sleeve, a magnetic coupling is arranged at the right end of the driven shaft, a support is arranged on the flue by welding, a supporting plate is fixed on the support by welding, an actuator mounting plate is fixed on the supporting plate by bolts, an actuator is fixed on the actuator mounting plate by bolts, a driving shaft is connected with the actuator by a coupling, and an outer magnet is arranged on the driving shaft.

2. A flue damper drive seal structure as claimed in claim 1, wherein, The center lines of the driven shaft, the magnetic coupling, the outer magnet, the driving shaft and the coupling are located on the same straight line.

3. A flue damper drive seal as claimed in claim 1, wherein, The magnetic coupling is connected and fixed by a key groove, and the magnetic coupling is located on the inner side of the isolation cover and has a gap between the isolation cover.

4. A flue damper drive seal structure as claimed in claim 1, wherein, The outer magnet and the isolation cover have a uniform gap therebetween, the outer magnet and the driving shaft are connected and fixed by welding, and the inner surface of the outer magnet and the outer surface of the magnetic coupling are parallel to each other.

5. A flue damper drive seal structure as claimed in claim 1, wherein, The gasket is made of a sealing rubber pad, and the gasket is tightly attached to the baffle shaft sleeve and the isolation cover to form a static seal by locking of the bolt and the nut.

6. A flue damper drive seal structure as claimed in claim 1, wherein, A bearing is arranged between the driven shaft and the baffle shaft sleeve, the bearing is arranged at the center position of the baffle shaft sleeve, the baffle shaft sleeve is embedded in the flue and is sealingly fixed by welding.

7. A flue damper drive seal structure as claimed in claim 1, wherein, The support and the driven shaft are parallel to each other, and the supporting plate and the support are perpendicular to each other.

Images