Noise reduction type induced draft fan

Abstract

The utility model discloses a noise reduction type induced draft fan, and particularly relates to the technical field of induced draft fans, the noise reduction type induced draft fan comprises an induced draft fan body, the bottom end of the induced draft fan body is provided with a shock absorption and noise reduction seat, and the shock absorption and noise reduction seat is used for shock absorption and noise reduction of the induced draft fan body; the firm assembly is used for quickly disassembling the induced draft fan body on the shock absorption and noise reduction base, the firm assembly comprises a supporting frame fixed to the top end of the shock absorption and noise reduction base and a guide groove formed in one side of the supporting frame and allowing the induced draft fan body to be inserted, a sliding cavity is formed in the bottom wall in the guide groove, and two symmetrical clamping blocks are installed in the sliding cavity; through the arrangement of the firm component, the induced draft fan body and the shock absorption and noise reduction seat can be quickly disassembled and assembled, so that the maintenance difficulty of the induced draft fan body is reduced, the quick maintenance of the induced draft fan body is realized, the maintenance of the induced draft fan is more time-saving and labor-saving, the maintenance efficiency of the induced draft fan is greatly improved, and the service life of the induced draft fan is prolonged. And the induced draft fan is convenient to maintain and use.

Description

Technical Field

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

[0002] Induced draft fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. For example, in the production of expanded clay sand, an induced draft fan is generally installed at the tail end of the exhaust duct to extract the hot flue gas in the duct and discharge the exhaust gas quickly, which is convenient for the production of expanded clay sand.

[0003] The main source of noise from existing induced draft fans is the vibration generated by the rotation of the fan on the induced draft fan, that is, the vibration generated by the collision of high-speed rotating air with the metal equipment in the induced draft fan. In order to reduce noise, a shock-absorbing and noise-reducing device is generally installed at the bottom of the induced draft fan. The shock-absorbing and noise-reducing device mainly includes a mounting frame, a spring, and a spring shock absorber, etc., which absorbs and buffers vibrations by releasing its own elastic potential energy, thereby reducing vibration and noise generation. However, the existing induced draft fan and the shock-absorbing and noise-reducing device are generally installed by welding or bolting, and the installation project is relatively complicated. If it needs to be disassembled for maintenance, it is difficult to disassemble quickly, and the operation is relatively difficult and takes a long time, which makes the maintenance of the induced draft fan time-consuming and labor-intensive, resulting in low maintenance efficiency of the induced draft fan, affecting the maintenance and use of the induced draft fan. Utility Model Content

[0004] The purpose of the utility model is to provide a noise-reducing induced draft fan, which can realize quick disassembly and assembly between the induced draft fan body and the shock-absorbing and noise-reducing seat through the arrangement of firm components, thereby reducing the maintenance difficulty of the induced draft fan body and realizing quick maintenance of the induced draft fan body, solving the problem that it is difficult to quickly disassemble the existing induced draft fan from the shock-absorbing and noise-reducing equipment during maintenance, resulting in time-consuming and labor-intensive maintenance of the induced draft fan and low maintenance efficiency of the induced draft fan, thereby realizing more time-saving and labor-saving maintenance of the induced draft fan, greatly improving the maintenance efficiency of the induced draft fan, facilitating the maintenance and use of the induced draft fan, and solving the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction type induced draft fan, comprising:

[0006] An induced draft fan body, wherein a vibration-damping and noise-reducing seat is installed at the bottom end of the induced draft fan body, and the vibration-damping and noise-reducing seat is used to reduce vibration and noise of the induced draft fan body;

[0007] A firm component is used for quickly disassembling the induced draft fan body on the shock-absorbing and noise-reducing seat, the firm component comprises a support frame fixed on the top of the shock-absorbing and noise-reducing seat and a guide groove provided on one side of the support frame for inserting the induced draft fan body, a sliding cavity is provided on the bottom wall inside the guide groove, two symmetrical clamping blocks are installed in the sliding cavity, and the two clamping blocks are in conflict with the bottom of the induced draft fan body, and a support component for connecting the clamping blocks is provided in the sliding cavity; through the setting of the guide groove, the induced draft fan body and the support frame can be guided and stably installed, and the induced draft fan body can be stably fixed in the required position, and an equipment maintenance port is installed on one side of the support frame, and the equipment maintenance port is communicated with the inside of the sliding cavity.

[0008] Preferably, the supporting assembly includes a limiting slider fixed at the bottom end of the clamping block and a driving motor fixed in the sliding cavity, and a threaded rod is installed between the driving motor and the sliding cavity, and a moving block is fixed at the bottom end of the limiting slider, and the moving block is sleeved on the outside of the threaded rod; and an internal thread is provided in the moving block, which is screwed together with the external thread on the threaded rod, and the number of moving blocks and limiting sliders is the same as that of the clamping blocks, so as to facilitate stable support of the two clamping blocks, and at the same time, the external thread on the threaded rod is a positive and negative thread, so that the two moving blocks can move synchronously.

[0009] Preferably, a connecting column is fixed in the sliding cavity, and a through groove for inserting the connecting column is formed at one end of the limiting sliding block, and the connecting column is located above the threaded rod.

[0010] Preferably, a protective component is also provided in the sliding cavity, and the protective component is used to protect the threaded rod. The protective component includes a protective shell installed in the sliding cavity and a connecting cavity opened between the clamping block and the limiting slider for the protective shell to slide into, and the protective shell is located directly above the threaded rod; through the setting of the protective shell, and the width of the protective shell is greater than the threaded rod, the outside of the threaded rod is wrapped and blocked, thereby enhancing the service life of the threaded rod.

[0011] Preferably, a snap-in cavity corresponding to the clamp block is further provided at the bottom of the induced draft fan body, and the snap-in cavity and the clamp block are snap-fitted and fixed; through the provision of the snap-in cavity, a stable connection between the induced draft fan body and the support frame is further ensured, so that the induced draft fan body and the support frame are firmly connected.

[0012] Preferably, the clamp block is provided with a blocking component that abuts against the clamping cavity, the blocking component includes an anti-skid pad installed on one side of the clamp block, and the anti-skid pad abuts against the clamping cavity relative to one side of the clamp block, a support plate is fixed to one side of the anti-skid pad, and a limiting groove for the support plate to slide is opened on one side of the clamp block.

[0013] Preferably, a positioning block is fixed to one side of the support plate, a positioning cavity corresponding to the positioning block is provided in the limiting slide groove, and the positioning cavity is slidably connected to the positioning block.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. Through the setting of the firm components, the induced draft fan body and the shock-absorbing and noise-reducing seat can be quickly disassembled and assembled, thereby reducing the maintenance difficulty of the induced draft fan body and realizing the rapid maintenance of the induced draft fan body. The problem that it is difficult to quickly disassemble the existing induced draft fan from the shock-absorbing and noise-reducing equipment during maintenance, resulting in time-consuming and labor-intensive maintenance of the induced draft fan and low maintenance efficiency of the induced draft fan is solved. The maintenance of the induced draft fan is more time-saving and labor-saving, which greatly improves the maintenance efficiency of the induced draft fan and facilitates the maintenance and use of the induced draft fan.

[0016] 2. By setting the blocking component, the contact area between the rubber pad and the clamping cavity can be increased, which helps to improve the clamping force between the clamping block and the clamping cavity, so that the induced draft fan body can be stably fixed on the support frame, and is not prone to loosening and deviation, which greatly enhances the stability of the induced draft fan body and the support frame and improves the noise reduction effect of the induced draft fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the support frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model when the protective shell and the connecting cavity are separated;

[0021] Figure 4 It is an exploded view of the blocking component of the utility model.

[0022] Description of reference numerals:

[0023] 1. induced draft fan body; 11. shock-absorbing and noise-reducing seat; 2. fixing component; 21. support frame; 22. clamping cavity; 23. clamping block; 24. sliding cavity; 25. driving motor; 26. threaded rod; 27. connecting column; 28. limiting slider; 29. ​​moving block; 3. protection component; 31. protection shell; 32. connecting cavity; 4. blocking component; 41. anti-slip cushion; 42. support plate; 43. limiting slide groove; 44. positioning block. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figure 1-Figure 3 A noise reduction induced draft fan is shown, comprising:

[0026] The induced draft fan body 1, the bottom end of the induced draft fan body 1 is installed with a shock-absorbing and noise-reducing seat 11, and the shock-absorbing and noise-reducing seat 11 is used to reduce the vibration and noise of the induced draft fan body 1; and the shock-absorbing and noise-reducing seat 11 adopts the existing spring shock-absorbing and noise-reducing principle, which is well known in the technical field and will not be repeated here;

[0027] The fixing component 2 is used for quickly disassembling the induced draft fan body 1 on the vibration-absorbing and noise-reducing seat 11. The fixing component 2 includes a support frame 21 fixed to the top of the vibration-absorbing and noise-reducing seat 11 and a guide groove provided on one side of the support frame 21 for inserting the induced draft fan body 1. A sliding cavity 24 is provided on the bottom wall of the guide groove. Two symmetrical clamping blocks 23 are installed in the sliding cavity 24. The two clamping blocks 23 are in conflict with the bottom of the induced draft fan body 1. A supporting component for connecting the clamping blocks 23 is provided in the sliding cavity 24.

[0028] The support assembly includes a limit slider 28 fixed at the bottom end of the clamping block 23 and a drive motor 25 fixed in the sliding cavity 24, and a threaded rod 26 is installed between the drive motor 25 and the sliding cavity 24, and a moving block 29 is fixed at the bottom end of the limit slider 28, and the moving block 29 is sleeved on the outside of the threaded rod 26; a connecting column 27 is also fixed in the sliding cavity 24, and a through groove for inserting the connecting column 27 is opened at one end of the limit slider 28, and the connecting column 27 is located above the threaded rod 26; a protective assembly 3 is also provided in the sliding cavity 24, and the protective assembly 3 is used to protect the threaded rod 26, and the protective assembly 3 includes a protective shell 31 installed in the sliding cavity 24 and a connecting cavity 32 opened between the clamping block 23 and the limit slider 28 for the protective shell 31 to slide into, and the protective shell 31 is located directly above the threaded rod 26; a clamping cavity 22 corresponding to the clamping block 23 is also opened at the bottom of the induced draft fan body 1, and the clamping cavity 22 and the clamping block 23 are clamped and fixed.

[0029] As can be seen from the above, when in use, the shock-absorbing and noise-reducing seat 11 is used to stably support the induced draft fan body 1, and then the shock-absorbing and noise-reducing seat 11 releases its own elastic potential energy to absorb and buffer the vibration, which is used to effectively reduce the vibration and noise of the induced draft fan body 1 and improve the service life of the induced draft fan body 1; when the induced draft fan body 1 needs maintenance after long-term use, the threaded rod 26 is driven by the driving motor 25 to rotate in the sliding cavity 24, and then the internal thread inside the moving block 29 is screwed with the external thread outside the threaded rod 26, and the rotation direction of the moving block 29 is limited by the limiting slider 28. At this time, the threaded rod 26 rotates to drive the moving block 29 to move along its outside, and pushes the limiting slider 28 along the connecting column 27. The outer part moves, and the limit slider 28 moves to slide between the connecting cavity 32 and the protective shell 31, and the limit slider 28 and the clamping block 23 are located on the protective shell 31 to slide, and the movement of the limit slider 28 drives the clamping block 23 to move to one side of the clamping cavity 22, so that the clamping block 23 slides into the sliding cavity 24, and then the clamping block 23 is disconnected from the clamping cavity 22, so that the induced draft fan body 1 loses its limit in the guide groove, and then the induced draft fan body 1 is moved along the guide groove and separated from the support frame 21, so as to realize the quick disassembly between the induced draft fan body 1 and the shock-absorbing and noise-reducing seat 11, which can reduce the maintenance difficulty of the induced draft fan body 1, realize the rapid maintenance of the induced draft fan body 1, save time and effort, and facilitate the maintenance and use of the induced draft fan.

[0030] In addition, refer to Figure 1-Figure 4 As shown, the clamping block 23 is provided with a blocking component 4 for abutting it against the clamping cavity 22, and the blocking component 4 includes an anti-skid pad 41 installed on one side of the clamping block 23, and the anti-skid pad 41 abuts against the clamping cavity 22 relative to one side of the clamping block 23, a support plate 42 is fixed to one side of the anti-skid pad 41, and a limiting groove 43 for sliding the support plate 42 is provided on one side of the clamping block 23; a positioning block 44 is also fixed to one side of the support plate 42, and a positioning cavity corresponding to the positioning block 44 is provided in the limiting groove 43, and the positioning cavity and the positioning block 44 are slidably connected.

[0031] Through the above technical solution:

[0032] When the clamping block 23 is at the bottom of the clamping cavity 22, the anti-skid pad 41 contacts the inside of the clamping cavity 22, and then the anti-skid pad 41 and the clamping cavity 22 are squeezed. At this time, the anti-skid pad 41 is forced to push the support plate 42 to move along the limiting slide groove 43, and the movement of the support plate 42 drives the positioning block 44 to move synchronously along the positioning cavity, and the positioning block 44 and the positioning cavity are in contact, so that the anti-skid pad 41 and the clamping cavity 22 are in stable contact, and then the anti-skid pad 41 absorbs the pressure and then deforms to enhance its contact surface with the inside of the clamping cavity 22, so that the contact area between the anti-skid pad 41 and the clamping cavity 22 is increased, and the clamping force between the clamping block 23 and the clamping cavity 22 is increased, so that the induced draft fan body 1 can be more firm and not easy to loosen and deviate, thereby enhancing the stability of the induced draft fan body 1 and the support frame 21.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A noise reduction induced draft fan, characterized in that: include: An induced draft fan body (1), wherein a vibration-damping and noise-reducing seat (11) is installed at the bottom end of the induced draft fan body (1), and the vibration-damping and noise-reducing seat (11) is used to reduce vibration and noise of the induced draft fan body (1); A fixing component (2) is used for quickly disassembling the induced draft fan body (1) from the shock-absorbing and noise-reducing seat (11), the fixing component (2) comprising a support frame (21) fixed to the top of the shock-absorbing and noise-reducing seat (11) and a guide groove provided on one side of the support frame (21) for inserting the induced draft fan body (1), a sliding cavity (24) provided on the bottom wall of the guide groove, two symmetrical clamping blocks (23) installed in the sliding cavity (24), and the two clamping blocks (23) abutting against the bottom of the induced draft fan body (1), and a supporting component connecting the clamping blocks (23) is provided in the sliding cavity (24).

2. The noise reduction induced draft fan according to claim 1, characterized in that: The support assembly comprises a limit slider (28) fixed at the bottom end of the clamping block (23) and a driving motor (25) fixed in the sliding cavity (24), and a threaded rod (26) is installed between the driving motor (25) and the sliding cavity (24), and a moving block (29) is fixed at the bottom end of the limit slider (28), and the moving block (29) is sleeved on the outside of the threaded rod (26).

3. The noise reduction induced draft fan according to claim 2, characterized in that: A connecting column (27) is also fixed in the sliding cavity (24), and a through groove for the connecting column (27) to be inserted is formed at one end of the limiting sliding block (28), and the connecting column (27) is located above the threaded rod (26).

4. The noise reduction induced draft fan according to claim 2, characterized in that: A protective component (3) is also provided in the sliding cavity (24), and the protective component (3) is used to protect the threaded rod (26). The protective component (3) comprises a protective shell (31) installed in the sliding cavity (24) and a connecting cavity (32) provided between the clamping block (23) and the limiting sliding block (28) for the protective shell (31) to slide into, and the protective shell (31) is located directly above the threaded rod (26).

5. The noise reduction induced draft fan according to claim 1, characterized in that: The bottom of the induced draft fan body (1) is also provided with a clamping cavity (22) corresponding to the clamping block (23), and the clamping cavity (22) and the clamping block (23) are clamped and fixed.

6. The noise reduction induced draft fan according to claim 5, characterized in that: The clamping block (23) is provided with a blocking component (4) for contacting the clamping block with the clamping cavity (22); the blocking component (4) comprises an anti-skid pad (41) mounted on one side of the clamping block (23); the anti-skid pad (41) contacts the clamping cavity (22) relative to one side of the clamping block (23); a support plate (42) is fixed to one side of the anti-skid pad (41); and a limiting sliding groove (43) for sliding the support plate (42) is provided on one side of the clamping block (23).

7. The noise reduction induced draft fan according to claim 6, characterized in that: A positioning block (44) is also fixed on one side of the support plate (42), a positioning cavity corresponding to the positioning block (44) is provided in the limiting sliding groove (43), and the positioning cavity and the positioning block (44) are slidably connected.

Images