Pressurizing induced draft fan

Abstract

The utility model provides a pressurizing induced draft fan, and belongs to the technical field of induced draft fans. The pressurizing induced draft fan is provided. A mounting hole is formed in the mounting seat, a fastening plate with an opening is arranged at the position, above the mounting hole, of the mounting seat, the induced draft fan is arranged on the mounting seat, a fixing device is arranged on the induced draft fan, and the bottom end of the fixing device penetrates through the fastening plate and is located in the mounting hole. The air inlet end of the induced draft fan communicates with an air inlet pipe, and the other end of the air inlet pipe communicates with a fan. Through the arrangement of the fixing device, mounting and fixing of the induced draft fan and the mounting base are achieved, mounting is easy and convenient, dismounting is convenient, the fixing effect is good, and the stability of the induced draft fan during operation can be improved. And through the arrangement of the fastening plate, the installation stability between the induced draft fan and the installation base can be improved, and the stability of the fixing device during fixed connection is improved.

Description

Technical Field

[0001] The present application relates to the field of induced draft fans, and in particular, to a boosted induced draft fan. Background Art

[0002] The gas pressurized centrifugal blower is a new type of gas exhauster developed according to the development trend of two-stage gas stoves and combined with single-stage gas stoves. It fundamentally solves the long-term dependence on imports or the use of Roots blowers with high noise and unadjustable flow.

[0003] The booster induced draft fan needs to be installed on a mounting base when it is put into use. In the prior art, the booster induced draft fan is usually installed using ordinary expansion bolts. However, ordinary expansion bolts are troublesome to install and are not easy to disassemble, and the fixing effect is poor, which affects the stability of the booster induced draft fan. Utility Model Content

[0004] In order to remedy the above deficiencies, the present application provides a booster induced draft fan, which aims to improve the problem that ordinary expansion bolts are troublesome to install and inconvenient to disassemble, have poor fixing effect, and affect the stability of the induced draft fan.

[0005] An embodiment of the present application provides a booster induced draft fan.

[0006] A mounting hole is provided on the mounting seat, a fastening plate with an opening is provided on the mounting seat above the mounting hole, the induced draft fan is provided on the mounting seat, and a fixing device is provided on the induced draft fan, the bottom end of the fixing device is provided to pass through the fastening plate and be located inside the mounting hole, the air inlet end of the induced draft fan is connected to an air inlet pipe, and the other end of the air inlet pipe is connected to a fan.

[0007] In a specific embodiment, the fixing device includes a nut, a screw and a barb, the bottom end of the screw is fixedly connected to the nut, the bottom end of the screw passes through the fastening plate and is located inside the mounting hole, and the barb is integrally formed with the bottom end of the screw.

[0008] In a specific embodiment, a locking sleeve with internal threads is fixedly connected inside the fastening plate.

[0009] In a specific embodiment, an anti-slip gasket is provided between the anti-loosening sleeve and the top end of the fixing device.

[0010] In a specific implementation manner, a fixing seat is provided at the bottom of the fan, and the fan is installed on the fixing seat.

[0011] In a specific embodiment, a non-slip mounting pad is provided on the mounting seat, a through groove matching the mounting hole is provided on the non-slip mounting pad, and the through groove and the mounting hole are interconnected, and the fastening plate is provided on the non-slip mounting pad.

[0012] In a specific embodiment, the fixing device includes a clamping plate, a threaded rod and a retractable elastic part, the clamping plate is fixedly connected to the fastening plate, the threaded rod is threaded through the clamping plate and the fastening plate and is located inside the mounting hole, and the elastic part is integrally formed at the bottom end of the threaded rod.

[0013] In a specific embodiment, a cavity is provided inside the elastic part, the top of the cavity is in a vertical state, and the bottom of the cavity is inclined downward.

[0014] Beneficial effects:

[0015] 1. The installation and fixation of the induced draft fan and the mounting base are realized by setting the fixing device, and the installation is simple and convenient, and the disassembly is easy, the fixing effect is good, and the stability of the induced draft fan during operation can be increased.

[0016] 2. By setting the fastening plate, the stability between the induced draft fan and the mounting base during installation can be increased, and the stability of the fixing device during fixed connection can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the booster induced draft fan provided in the implementation mode of the present application;

[0019] Figure 2 A schematic diagram of the connection relationship between the fixing device and the mounting base in Example 1 provided in the implementation manner of the present application;

[0020] Figure 3 A schematic diagram of the connection relationship between the fixing device and the mounting seat in Example 2 provided in the implementation manner of the present application;

[0021] Figure 4 A schematic diagram of the structure of a fixing device according to Example 1 provided in the implementation manner of the present application;

[0022] Figure 5 This is a schematic diagram of the fixing device structure of Example 2 provided in the implementation manner of the present application.

[0023] In the figure: 1-mounting seat; 11-mounting hole; 2-induced draft fan; 3-fan; 4-air inlet pipe; 5-fixing seat; 6-fixing device; 61a-nut; 62a-screw; 63a-barb; 61b-pressing plate; 62b-threaded rod; 63b-elastic part; 7-fastening plate; 8-anti-loosening sleeve; 9-anti-slip gasket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 5 , the present application provides a booster induced draft fan.

[0027] See also Figure 1 , Figure 2 and Figure 4 , a mounting hole 11 is provided on the mounting seat 1, and an opening fastening plate 7 is provided on the mounting seat 1 above the mounting hole 11, and the induced draft fan 2 is provided on the mounting seat 1. Specifically, the optimal selection parameters of the induced draft fan 2 are: induced draft fan 2 flow rate: 350m3 / s, induced draft fan 2 pressure: 11300Pa, intake air density: 0.647kg / m3, and maximum shaft power 4700kW. In addition, a fixing device 6 is provided on the induced draft fan 2, and the bottom end of the fixing device 6 is provided to pass through the fastening plate 7 and is located inside the mounting hole 11. The air inlet end of the induced draft fan 2 is connected to the air inlet pipe 4, and the other end of the air inlet pipe 4 is connected to the fan 3. Among them, when the equipment is running, the induced draft fan 2 and the fan 3 are started at the same time to realize the pressurization of the induced draft fan 2. Through the setting of the fixing device 6, the induced draft fan 2 and the mounting seat 1 are installed and fixed, and the installation is simple and convenient, easy to disassemble, and the fixing effect is good, which can increase the stability of the induced draft fan 2 during operation. By providing the fastening plate 7, the stability between the induced draft fan 2 and the mounting base 1 during installation can be increased, and the stability of the fixing device 6 during fixed connection can be improved.

[0028] In this embodiment, the fixing device 6 includes a nut 61a, a screw rod 62a and a barb 63a. The bottom end of the screw rod 62a is fixedly connected to the nut 61a. The bottom end of the screw rod 62a passes through the fastening plate 7 and is located inside the mounting hole 11. The barb 63a and the bottom end of the screw rod 62a are integrally formed. During installation, the barb 63a is rotated together with the screw rod 62a to the inside of the mounting hole 11 to achieve the installation of the induced draft fan 2. Through the provision of the barb 63a, the barb 63a can hold the inner wall of the mounting hole 11, so that the screw rod 62a can be firmly limited inside the mounting hole 11 when inside the mounting hole 11, thereby improving the stability of the screw rod 62a inside the mounting hole 11 and being very convenient during installation.

[0029] In this embodiment, a locking sleeve 8 with internal threads is fixedly connected inside the fastening plate 7. The locking sleeve 8 is threadedly connected with the screw rod 62a or the threaded rod 62b to increase the force points of the screw rod 62a or the threaded rod 62b, making the screw rod 62a or the threaded rod 62b more stable.

[0030] In the specific setting, an anti-slip gasket 9 is arranged between the anti-loosening sleeve 8 and the top of the fixing device 6. Among them, by setting the anti-slip gasket 9, the stability between the nut 61a or the clamping plate 61b and the fastening plate 7 is further improved to prevent the nut 61a or the clamping plate 61b from slipping.

[0031] Specifically, a fixing seat 5 is provided at the bottom of the fan 3, and the fan 3 is installed on the fixing seat 5. The fan 3 is installed on the fixing seat 5 by expansion bolts.

[0032] In this embodiment, an anti-skid mounting pad is provided on the mounting seat 1, and a through groove matching the mounting hole 11 is provided on the anti-skid mounting pad, and the through groove and the mounting hole 11 are communicated with each other, and the fastening plate 7 is provided on the anti-skid mounting pad. Among them, by providing the anti-skid mounting pad, the induced draft fan 2 is located thereon, which can further effectively ensure the stability of the induced draft fan 2.

[0033] Embodiment 2:

[0034] The main difference between this embodiment and the first embodiment is that;

[0035] See also Figure 1 The fixing device 6 includes a clamping plate 61b, a threaded rod 62b and a retractable elastic part 63b. The clamping plate 61b is fixedly connected to the fastening plate 7. The threaded rod 62b is screwed through the clamping plate 61b and the fastening plate 7 and is located inside the mounting hole 11. The elastic part 63b is integrally formed and arranged at the bottom end of the threaded rod 62b. A cavity is arranged inside the elastic part 63b. The top of the cavity is in a vertical state, and the bottom end is inclined downward. During installation, the elastic part 63b is rotated together with the threaded rod 62b to the inside of the mounting hole 11. When the elastic part 63b enters the inside of the mounting hole 11, the cavity is squeezed and can be smoothly rotated to the inside of the mounting hole 11. When the elastic part 63b completely enters the inside of the mounting hole 11, it will be retracted outward due to the effect of the cavity, completing the screw connection and realizing the installation of the induced draft fan 2. By providing the elastic portion 63 b , the outer side of the elastic portion 63 b can further grip the inner wall of the mounting hole 11 , thereby improving the stability of the threaded rod 62 b inside the mounting hole 11 .

[0036] The working principle of the booster induced draft fan:

[0037] When the equipment is running, the induced draft fan 2 and the fan 3 are started at the same time to increase the pressure of the induced draft fan 2. By setting the fixing device 6, the induced draft fan 2 and the mounting seat 1 are installed and fixed, and the installation is simple and convenient, easy to disassemble, and the fixing effect is good, which can increase the stability of the induced draft fan 2 during operation. By setting the fastening plate 7, the stability between the induced draft fan 2 and the mounting seat 1 during installation can be increased, and the stability of the fixing device 6 during fixed connection can be improved.

[0038] It should be noted that the specific model specifications of the induced draft fan 2 and the fan 3 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0039] The power supply and principle of the induced draft fan 2 and the fan 3 are clear to those skilled in the art and will not be described in detail here.

[0040] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A booster induced draft fan, characterized in that: include A mounting base (1) and an induced draft fan (2), wherein the mounting base (1) is provided with a mounting hole (11), the mounting base (1) is provided with an opening fastening plate (7) located above the mounting hole (11), the induced draft fan (2) is arranged on the mounting base (1), and a fixing device (6) is provided on the induced draft fan (2), the bottom end of the fixing device (6) is arranged to pass through the fastening plate (7) and be located inside the mounting hole (11), the air inlet end of the induced draft fan (2) is connected to an air inlet pipe (4), and the other end of the air inlet pipe (4) is connected to the fan (3).

2. A booster induced draft fan according to claim 1, characterized in that: The fixing device (6) comprises a nut (61a), a screw rod (62a) and a barb (63a); the bottom end of the screw rod (62a) is fixedly connected to the nut (61a); the bottom end of the screw rod (62a) passes through the fastening plate (7) and is located inside the mounting hole (11); and the barb (63a) is integrally formed with the bottom end of the screw rod (62a).

3. The booster induced draft fan according to claim 1, characterized in that: The fixing device (6) comprises a clamping plate (61b), a threaded rod (62b) and a retractable elastic portion (63b); the clamping plate (61b) is fixedly connected to the fastening plate (7); the threaded rod (62b) is threadedly connected to pass through the clamping plate (61b) and the fastening plate (7) and is located inside the mounting hole (11); and the elastic portion (63b) is integrally formed and arranged at the bottom end of the threaded rod (62b).

4. A booster induced draft fan according to claim 3, characterized in that: The elastic part (63b) is provided with a cavity inside, the top of the cavity is in a vertical state, and the bottom of the cavity is inclined downward.

5. The booster induced draft fan according to claim 1, characterized in that: The fastening plate (7) is internally fixedly connected with an anti-loosening sleeve (8) with internal threads.

6. A booster induced draft fan according to claim 5, characterized in that: An anti-slip pad (9) is provided between the anti-loosening sleeve (8) and the top end of the fixing device (6).

7. The booster induced draft fan according to claim 1, characterized in that: A fixing seat (5) is provided at the bottom of the fan (3), and the fan (3) is mounted on the fixing seat (5).

8. The booster induced draft fan according to claim 1, characterized in that: The mounting seat (1) is provided with an anti-skid mounting pad, the anti-skid mounting pad is provided with a through groove matching the mounting hole (11), and the through groove and the mounting hole (11) are communicated with each other, and the fastening plate (7) is arranged on the anti-skid mounting pad.

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