Induced draft fan

Abstract

The induced draft fan comprises a fixing frame and a reserved air opening, supporting adjusting frames are arranged at the two ends of the bottom of one side of the fixing frame, sliding grooves are formed in the surfaces of the tops of the supporting adjusting frames, an induced draft fan body is arranged at the tops of the supporting adjusting frames, and a mounting ring is arranged on the side, corresponding to the periphery of the reserved air opening, of the induced draft fan body. A fan pipe body is connected between the induced draft fan body and the mounting ring, a dismounting ring is arranged on the inner side of the fan pipe body, a rotating damper is connected between the fan pipe body and the dismounting ring, a dust falling filter screen is fixed to the inner side of the dismounting ring through screws, and a movable base is arranged at the bottom of the induced draft fan body through bolts; rolling wheels are arranged on the periphery of the bottom of the movable base. The fan is provided with the fixing structure convenient to assemble, and the filtering structure is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of induced draft fans, in particular to an induced draft fan. Background Art

[0002] An induced draft fan is a device that generates negative pressure through the rotation of an impeller and then extracts air from the system (equipment). It is generally installed at the tail end of a boiler to extract hot flue gas from the furnace.

[0003] The existing induced draft fan also has the following defects: lack of a fixing structure that is convenient for assembly, and the filter structure is not convenient for disassembly and cleaning, which greatly reduces the convenience of assembly and filter cleaning. To this end, we propose an induced draft fan. Summary of the invention

[0004] The main purpose of the utility model is to provide an induced draft fan, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A induced draft fan comprises a fixing frame and a reserved air outlet, wherein support and adjustment frames are provided at both ends of the bottom of one side of the fixing frame, slide grooves are provided on the top surface of the support and adjustment frame, an induced draft fan body is provided on the top of the support and adjustment frame, a mounting ring is provided on the periphery of the reserved air outlet corresponding to one side of the induced draft fan body, a fan pipe body is connected between the induced draft fan body and the mounting ring, a disassembly ring is provided inside the fan pipe body, a rotation damping is connected between the fan pipe body and the disassembly ring, a dust suppression filter is fixed to the inner side of the disassembly ring by screws, a movable base is provided at the bottom of the induced draft fan body by bolts, and rollers are provided on the periphery of the bottom of the movable base.

[0007] Furthermore, the reserved air outlet is opened at the center position of the surface of the fixing frame.

[0008] Furthermore, the mounting ring is fixed to the fixing frame by bolts.

[0009] Furthermore, the dust reduction filter is made of stainless steel.

[0010] Furthermore, the bottom ends of the rollers are located in slide grooves, and the rollers are limited by the slide grooves.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By setting a fixed frame, a supporting adjustment frame, a sliding groove and a mounting ring, a movable base is used to support the bottom of the induced draft fan body, and the sliding groove can be used in conjunction with a roller to support the top fan to move so that the mounting ring fits one side of the fixed frame and the fan pipe body is aligned with the reserved air outlet. The mounting ring is fixed to the fixed frame to achieve installation and fixation of the induced draft fan body, and assembly is convenient.

[0013] By providing a disassembly and assembly ring, a rotary damper and a dust reduction filter, the dust reduction filter is utilized to achieve a dust reduction and filtering effect. When the induced draft fan body is not working, the rotary damper can be utilized in conjunction with the disassembly and assembly ring to rotate and expose the dust reduction filter for disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of an induced draft fan.

[0015] Figure 2 The utility model is a schematic diagram of the structure of a fixing frame and a supporting and adjusting frame of an induced draft fan.

[0016] Figure 3 The utility model is a schematic diagram of a dust suppression filter structure of an induced draft fan.

[0017] In the figure: 1. Fixed frame; 2. Reserved air outlet; 3. Support and adjustment frame; 4. Slide groove; 5. induced draft fan body; 6. Mounting ring; 7. Fan pipe body; 8. Disassembly and assembly ring; 9. Rotary damping; 10. Dust suppression filter; 11. Mobile base; 12. Roller. Implementation

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-3 As shown, an induced draft fan comprises a fixing frame 1 and a reserved air outlet 2, support and adjustment frames 3 are provided at both ends of the bottom of one side of the fixing frame 1, slide grooves 4 are provided on the top surface of the support and adjustment frame 3, an induced draft fan body 5 is provided on the top of the support and adjustment frame 3, a mounting ring 6 is provided on the periphery of the reserved air outlet 2 on one side of the induced draft fan body 5 corresponding to, a fan tube body 7 is connected between the induced draft fan body 5 and the mounting ring 6, a disassembly ring 8 is provided on the inner side of the fan tube body 7, a rotation damping 9 is connected between the fan tube body 7 and the disassembly ring 8, a dust suppression filter 10 is fixed to the inner side of the disassembly ring 8 by screws, a movable base 11 is provided at the bottom of the induced draft fan body 5 by bolts, and rollers 12 are provided on the periphery of the bottom of the movable base 11.

[0020] The reserved air outlet 2 is opened at the center of the surface of the fixing frame 1 .

[0021] In this embodiment, Figure 1 , 2 As shown, the air outlet 2 is reserved to facilitate the air induced work of the induced draft fan body 5 .

[0022] The mounting ring 6 is fixed to the fixing frame 1 by bolts.

[0023] In this embodiment, Figure 1 , 2 As shown, the induced draft fan body 5 is fixed by the fixing frame 1 through the mounting ring 6.

[0024] Wherein, the dust reduction filter 10 is made of stainless steel.

[0025] In this embodiment, Figure 3 As shown, the dust suppression filter 10 is made of stainless steel to improve the rust resistance of the material.

[0026] The bottom ends of the rollers 12 are located in the slide grooves 4 .

[0027] In this embodiment, Figure 1 , 2 As shown, the sliding groove 4 is used to facilitate the sliding of the roller 12.

[0028] It should be noted that the utility model is an induced draft fan. During installation, the fixing frame 1 is fixed to the wall, and then the induced draft fan body 5 is placed on the top between the supporting and adjusting frames 3, and the roller 12 is received through the slide groove 4. During deployment, the bottom of the induced draft fan body 5 is supported by the mobile base 11, and the top fan can be supported to move by the slide groove 4 and the roller 12 so that the installation ring 6 fits one side of the fixing frame 1 and the fan pipe body 7 is aligned with the reserved air outlet 2. The installation ring 6 is fixed to the fixing frame 1 to achieve the installation and fixation of the induced draft fan body 5. When in use, the dust reduction filter 10 is used to achieve the dust reduction and filtering effect. When the induced draft fan body 5 is not working, the dust reduction filter 10 can be exposed by rotating the damping 9 in cooperation with the disassembly and assembly ring 8 to disassemble and clean it.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An induced draft fan, comprising a fixing frame (1) and a reserved air outlet (2), characterized in that: Support and adjustment frames (3) are provided at both ends of the bottom of one side of the fixed frame (1), and the top surface of the support and adjustment frame (3) is provided with a slide groove (4). An induced draft fan body (5) is provided on the top of the support and adjustment frame (3), and a mounting ring (6) is provided on the periphery of the reserved air outlet (2) on one side of the induced draft fan body (5), and a fan pipe body (7) is connected between the induced draft fan body (5) and the mounting ring (6). A disassembly ring (8) is provided on the inner side of the fan pipe body (7), and a rotation damper (9) is connected between the fan pipe body (7) and the disassembly ring (8). A dust suppression filter (10) is fixed on the inner side of the disassembly ring (8) by screws. A movable base (11) is provided at the bottom of the induced draft fan body (5) by bolts, and rollers (12) are provided on the periphery of the bottom of the movable base (11).

2. The induced draft fan according to claim 1, characterized in that: The reserved air outlet (2) is opened at the center position of the surface of the fixing frame (1).

3. The induced draft fan according to claim 1, characterized in that: The mounting ring (6) is fixed to the fixing frame (1) by means of bolts.

4. The induced draft fan according to claim 1, characterized in that: The dust suppression filter (10) is made of stainless steel.

5. The induced draft fan according to claim 1, characterized in that: The bottom ends of the rollers (12) are located in the slide grooves (4).

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