Efficient induced draft fan for waste gas treatment tower

Abstract

The utility model discloses an efficient induced draft fan for a waste gas treatment tower, and relates to the technical field of induced draft fans. The device comprises a support frame and a shell cover, wherein the shell cover is arranged on the front side of the support frame. According to the utility model, the shell cover is arranged, and the connecting internal thread is matched with the connecting external thread, so that after the shell cover is twisted down from the shell, the connecting sheet can be pulled forwards to drive the sliding rod to slide in the sliding groove, and meanwhile, the clamping block slides on the inner wall of the chute, so that the clamping block is separated from the clamping groove; after cleaning is completed, the sleeve rod can slide into the outer wall of the cross-shaped coupling rod again, at the moment, a connecting piece can be loosened, a stretched spring rebounds, an inclined groove in a sliding rod abuts against a clamping block to slide upwards, the clamping block is clamped into a clamping groove, and the sleeve rod is fixed; according to the mechanism, the sleeve rod can be quickly disassembled, the maintenance and cleaning efficiency of the device is greatly improved, and the convenience during assembly is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of induced draft fans, in particular to a high-efficiency induced draft fan for a waste gas treatment tower. Background Art

[0002] The high-efficiency induced draft fan for the exhaust gas treatment tower is a key equipment in the exhaust gas treatment system. Its function is not only to effectively introduce the exhaust gas into the treatment tower, but also to improve the working efficiency of the entire exhaust gas treatment system. The high-efficiency induced draft fan adopts advanced design concepts and technologies to ensure that the maximum air flow can be achieved with the minimum energy consumption during operation, thereby significantly reducing energy costs and effectively reducing the emission of greenhouse gases such as carbon dioxide.

[0003] However, the existing induced draft fans are not easy to clean their internal structures, which leads to a significant reduction in the efficiency of the equipment when induced drafting the exhaust gas. As the use time increases, the accumulation of dust and debris inside the fan seriously affects the smooth flow of air, causing blockage and pressure loss, which not only increases energy consumption but also threatens the service life of the induced draft fan. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency induced draft fan for an exhaust gas treatment tower. By providing a shell cover, the sleeve rod can be removed to repair and clean the worm wheel blades on the sleeve rod, thereby solving the problem that the existing induced draft fan is not convenient for cleaning the internal structure, which leads to a significant reduction in the efficiency of the equipment when induced draft of the exhaust gas.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a high-efficiency induced draft fan for an exhaust gas treatment tower, comprising a support frame and a shell cover, wherein the shell cover is provided on the front side of the support frame, and is characterized in that: an induced draft mechanism is provided on the support frame;

[0007] The air induction mechanism includes a shell fixedly connected to the top surface of the support frame, the rear side of the shell is fixedly connected to a fixing frame, the inner wall of the fixing frame is fixedly connected to a motor, the front side of the shell is provided with an air outlet, the outer wall of the shell is provided with an air inlet, the output end of the motor is fixedly connected to a rotating shaft through a coupling, and the front end of the rotating shaft is fixedly connected to a cross-shaped coupling rod.

[0008] Furthermore, the outer wall of the cross-shaped coupling rod is slidably connected to a sleeve rod, and the outer wall of the sleeve rod is fixedly connected to a plurality of worm wheel blades.

[0009] Furthermore, outer walls of several of the worm wheel blades are fixedly connected with a connecting frame, and the connecting frame is located inside the outer shell.

[0010] Furthermore, a sliding groove is provided on the inner wall of the cross-shaped coupling rod, and a sliding rod is slidably connected to the inner wall of the sliding groove.

[0011] Furthermore, an outer wall of the slide rod is provided with an oblique groove, and an inner wall of the sleeve rod is provided with a clamping groove, which extends to the interior of the slide groove. The inner walls of the clamping grooves are slidably connected with a clamping block, and the bottom end of the clamping block is adapted to the inner wall of the oblique groove, and the bottom end of the clamping block is slidably connected to the inner wall of the oblique groove.

[0012] Furthermore, the front ends of the two sliding rods are fixedly connected with a connecting piece, the front ends of the sliding rods are fixedly connected with a connecting piece, the outer wall of the sliding rod is wrapped with a spring, the rear end of the spring is fixedly connected to the front end of the cross-shaped coupling rod, and the front end of the spring is fixedly connected to the rear side of the connecting piece.

[0013] Furthermore, an outer wall of the shell is provided with a connecting external thread, and an inner wall of the shell cover is provided with a connecting internal thread, and the connecting internal thread is adapted to the connecting external thread.

[0014] The utility model has the following beneficial effects:

[0015] 1. By providing an induced draft mechanism, when the motor on the driving fixed frame drives the rotating shaft and the cross-shaped coupling rod to rotate, it can drive the multiple worm gear blades on the sleeve rod to rotate. The interior of the shell is smoothed, and the air outlet and the air inlet are matched, so that the air at the air inlet is driven by the rotating worm gear blades to be introduced into the shell and discharged from the air outlet. When the exhaust gas is treated, a larger wind pressure and air volume can be generated, and the worm gear blades adopt a backward curved design. This design can make the airflow in the connecting frame flow smoother, reduce eddy current loss, thereby improving the efficiency of the fan, and then achieving the effect of efficient exhaust gas drainage.

[0016] 2. By providing a shell cover, the connecting internal thread and the connecting external thread cooperate with each other. After twisting the shell cover to twist the shell cover off the outer shell, the connecting piece can be pulled forward to drive the slide rod to slide in the slide groove. At the same time, the card block slides on the inner wall of the inclined groove, so that the card block is out of the card slot. At this time, the sleeve rod can be removed to repair and clean the worm wheel blades on the sleeve rod. After cleaning, the sleeve rod can be slid back into the outer wall of the cross-shaped coupling rod. At this time, the connecting piece can be loosened. At this time, the stretched spring rebounds, so that the inclined groove on the slide rod pushes the card block to slide upward, so that the card block is stuck in the card slot to fix the sleeve rod. This mechanism can quickly disassemble the sleeve rod, greatly improving the efficiency of maintenance and cleaning of the device and improving the convenience during assembly.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a structural diagram of the air-inducing mechanism of the utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the release structure at point B in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Support frame; 2. Air induction mechanism; 3. Shell cover; 21. Outer shell; 22. Fixing frame; 23. Motor; 24. Air outlet; 25. Air inlet; 26. Rotating shaft; 27. Cross coupling rod; 28. Sleeve rod; 29. Worm gear blade; 291. Connecting frame; 292. Slide groove; 293. Slide rod; 294. Inclined groove; 295. Slot; 296. Block; 297. Connecting piece; 298. Spring; 31. Connecting internal thread; 32. Connecting external thread. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 As shown, the utility model is a high-efficiency induced draft fan for an exhaust gas treatment tower, comprising a support frame 1 and a shell cover 3. The shell cover 3 is provided on the front side of the support frame 1, and an induced draft mechanism 2 is provided on the support frame 1;

[0028] The air induction mechanism 2 includes a shell 21 fixedly connected to the top surface of the support frame 1, a fixing frame 22 fixedly connected to the rear side of the shell 21, a motor 23 fixedly connected to the inner wall of the fixing frame 22, an air outlet 24 opened on the front side of the shell 21, an air inlet 25 opened on the outer wall of the shell 21, the output end of the motor 23 is fixedly connected to a rotating shaft 26 through a coupling, the front end of the rotating shaft 26 is fixedly connected to a cross-shaped coupling rod 27, the outer wall of the cross-shaped coupling rod 27 is slidably connected to a sleeve rod 28, and the outer wall of the sleeve rod 28 is fixedly connected to a plurality of worm gears. The outer walls of the wheel blades 29 are fixedly connected with a connecting frame 291, and the connecting frame 291 is located inside the housing 21. The inner wall of the cross-shaped coupling rod 27 is provided with a slide groove 292, and the inner wall of the slide groove 292 is slidably connected with a slide rod 293. The outer wall of the slide rod 293 is provided with an inclined groove 294. The inner wall of the sleeve rod 28 is provided with a card slot 295, and the card slot 295 extends to the inside of the slide groove 292. The inner wall of the card slot 295 is slidably connected with a card block 296. The bottom end of the card block 296 is adapted to the inner wall of the inclined groove 294, and the bottom end of the card block 296 is adapted to the inner wall of the inclined groove 294. The inner wall of the sliding rod 294 is connected in a sliding manner, the front end of the sliding rod 293 is fixedly connected with a connecting piece 297, the outer wall of the sliding rod 293 is wound with a spring 298, the rear end of the spring 298 is fixedly connected to the front end of the cross-shaped coupling rod 27, the front end of the spring 298 is fixedly connected to the rear side of the connecting piece 297, the outer wall of the outer shell 21 is provided with a connecting external thread 32, the inner wall of the shell cover 3 is provided with a connecting internal thread 31, the connecting internal thread 31 is adapted to the connecting external thread 32, and the air induction mechanism 2 is provided, and the motor 23 on the driving fixed frame 22 drives the rotating shaft 26 and the cross-shaped coupling When the rod 27 rotates, it can drive the multiple worm wheel blades 29 on the sleeve rod 28 to rotate. The interior of the shell 21 is smoothed, and the air outlet 24 and the air inlet 25 are matched, so that the air at the air inlet 25 is introduced into the interior of the shell 21 under the drive of the rotating worm wheel blades 29 and discharged from the air outlet 24. When the exhaust gas is treated, a larger wind pressure and air volume can be generated. The worm wheel blades 29 adopt a backward curved design. This design can make the air flow in the connecting frame 291 smoother, reduce eddy current loss, thereby improving the efficiency of the fan, and then achieving the effect of efficient drainage of exhaust gas;By providing the shell cover 3, the connecting internal thread 31 and the connecting external thread 32 cooperate with each other. After twisting the shell cover 3 to twist the shell cover 3 off the housing 21, the connecting piece 297 can be pulled forward, driving the two slide bars 293 to slide in the slide groove 292. At the same time, the block 296 slides on the inner wall of the inclined groove 294, so that the block 296 disengages from the groove 295. At this time, the sleeve rod 28 can be removed and the worm wheel blade 29 on the sleeve rod 28 can be repaired and cleaned. After cleaning, the sleeve rod 28 can be slid back into the outer wall of the cross-shaped coupling rod 27. At this time, the connecting piece 297 can be loosened. At this time, the stretched spring 298 rebounds, causing the inclined groove 294 on the slide bar 293 to push the block 296 to slide upward, so that the block 296 is locked in the groove 295 to fix the sleeve rod 28. This mechanism can quickly disassemble the sleeve rod 28, greatly improving the efficiency of maintenance and cleaning of the device and improving the convenience during assembly.

[0029] A specific application of this embodiment is as follows: by providing an air induction mechanism 2, when the motor 23 on the driving fixing frame 22 drives the rotating shaft 26 and the cross-shaped coupling rod 27 to rotate, it can drive the multiple worm wheel blades 29 on the sleeve rod 28 to rotate, the interior of the housing 21 is smoothed, and the air outlet 24 and the air inlet 25 are matched, so that the air at the air inlet 25 is driven by the rotating worm wheel blades 29 to be introduced into the interior of the housing 21 and discharged from the air outlet 24. When the exhaust gas is treated, a larger wind pressure and air volume can be generated, and the worm wheel blades 29 adopt a backward curved design. This design can make the air flow in the connecting frame 291 smoother, reduce eddy current loss, thereby improving the efficiency of the fan, and further achieving the effect of efficient exhaust gas diversion;

[0030] The spring 298 of this moment stretches and rebounds, makes the inclined groove 294 on the slide bar 293 press the card block 296 to slide upward, makes the card block 296 be stuck in the card slot 295 and the sleeve rod 28 is fixed.

[0031] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency induced draft fan for an exhaust gas treatment tower, comprising a support frame (1) and a shell cover (3), wherein the shell cover (3) is provided on the front side of the support frame (1), and is characterized in that: The support frame (1) is provided with an air induction mechanism (2); The air induction mechanism (2) comprises a housing (21) fixedly connected to the top surface of the support frame (1); a fixing frame (22) is fixedly connected to the rear side of the housing (21); a motor (23) is fixedly connected to the inner wall of the fixing frame (22); an air outlet (24) is provided on the front side of the housing (21); an air inlet (25) is provided on the outer wall of the housing (21); an output end of the motor (23) is fixedly connected to a rotating shaft (26) via a coupling; and a cross-shaped coupling rod (27) is fixedly connected to the front end of the rotating shaft (26).

2. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 1, characterized in that: The outer wall of the cross-shaped coupling rod (27) is slidably connected to a sleeve rod (28), and the outer wall of the sleeve rod (28) is fixedly connected to a plurality of worm wheel blades (29).

3. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 2, characterized in that: The outer walls of a plurality of the worm wheel blades (29) are fixedly connected to a connection frame (291), and the connection frame (291) is located inside the housing (21).

4. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 3, characterized in that: A sliding groove (292) is provided on the inner wall of the cross-shaped coupling rod (27), and a sliding rod (293) is slidably connected to the inner wall of the sliding groove (292).

5. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 4, characterized in that: The outer wall of the slide rod (293) is provided with an inclined groove (294), and the inner wall of the sleeve rod (28) is provided with a clamping groove (295), and the clamping groove (295) extends to the inside of the slide groove (292). The inner wall of the clamping groove (295) is slidably connected with a clamping block (296), and the bottom end of the clamping block (296) is adapted to the inner wall of the inclined groove (294), and the bottom end of the clamping block (296) is slidably connected to the inner wall of the inclined groove (294).

6. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 5, characterized in that: The front end of the slide rod (293) is fixedly connected to a connecting piece (297), the outer wall of the slide rod (293) is wound with a spring (298), the rear end of the spring (298) is fixedly connected to the front end of the cross-shaped coupling rod (27), and the front end of the spring (298) is fixedly connected to the rear side of the connecting piece (297).

7. The high-efficiency induced draft fan for an exhaust gas treatment tower according to claim 6, characterized in that: The outer wall of the shell (21) is provided with a connecting external thread (32), and the inner wall of the shell cover (3) is provided with a connecting internal thread (31), and the connecting internal thread (31) is adapted to the connecting external thread (32).

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