Air entraining device for chemical waste gas pipeline

Abstract

The utility model discloses a chemical waste gas pipeline air entraining device which comprises an air entraining pipeline, and a flange plate is fixedly installed on the outer side of the air entraining pipeline. The fixing ring is fixedly installed in the air entraining pipeline, the front side of the fixing ring is fixedly connected with a first butt joint strip, and the rear side of the fixing ring is fixedly connected with a second butt joint strip; the protective net is connected to the outer side of the first butt joint strip in a sleeving manner; the fan is connected to the outer side of the second butt joint strip in a sleeving manner; the abutting pieces are installed between the adjacent first abutting strips and between the adjacent second abutting strips correspondingly, and each abutting piece comprises a rotating roller, a connecting piece, an abutting block, a connecting block and a screw; and the noise reduction assembly is connected to the outer side of the second butt joint strip in a sleeving mode, and the noise reduction assembly comprises a circular ring and sound absorption cotton. According to the device, the draught fan is not prone to damage, meanwhile, the noise reduction function is achieved, and the function of facilitating replacement of the protective net or overhaul of the draught fan is further achieved.

Description

Technical Field

[0001] This utility model relates to the field of air intake devices, specifically to an air intake device for a chemical waste gas pipeline. Background Technology

[0002] To prevent chemical waste gas from polluting the environment, pipelines are typically used to extract and treat the waste gas. For example, a prior art Chinese utility model patent (application number 201620516376.2) discloses a waste gas emission device, including an extraction pipeline composed of at least two sections of bent pipes facing different directions. The lower end of the extraction pipeline is connected to a funnel-shaped structure to increase the extraction range. The upper end of the extraction pipeline is detachably connected to an extraction device for drawing gas. This device has the following advantages: the extraction pipeline and the extraction device are detachably connected, allowing the extraction pipeline to face different directions, enabling concentrated extraction of waste gas from different directions, enhancing the extraction effect, and increasing the extraction range.

[0003] However, the device still has the following defects in actual use: due to the relatively simple structure of the air extraction device, its function is relatively simple. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a chemical waste gas pipeline venting device that makes the fan less prone to damage, while also having a noise reduction function and facilitating the replacement of the protective net or the maintenance of the fan.

[0005] According to the technical solution provided in the embodiments of this utility model, a chemical waste gas pipeline induced gas device includes:

[0006] An air intake pipe is provided, and a flange is fixedly installed on the outside of the air intake pipe. The flange has a perforation on its side.

[0007] A fixing ring is fixedly installed inside the air intake pipe. A first connecting strip is fixedly connected to the front side of the fixing ring, and a second connecting strip is fixedly connected to the rear side of the fixing ring.

[0008] A protective net is fitted over the outside of the first connecting strip. The outside of the protective net is a side ring, and the side of the side ring has a first opening through which the first connecting strip passes.

[0009] A fan, wherein the fan is sleeved on the outside of the second connecting strip, and the outside of the fan is a shell;

[0010] Abutting member is installed between adjacent first mating strips and adjacent second mating strips. The abutting member includes a rotating roller, a connecting piece, abutting blocks, and screws. The rotating roller is connected to the first mating strip and the second mating strip respectively via bearings. The connecting piece is fixedly connected to the rotating roller. The abutting block is fixedly installed on the side of the connecting piece. The front abutting block abuts against the side of the edge ring, and the rear abutting block abuts against the side of the rear ring. The connecting blocks are fixedly installed between adjacent first mating strips and adjacent second mating strips. The screw is screwed into the side of the connecting block. The side of the connecting block has a threaded hole that matches the screw. The end of the screw abuts against the side of the connecting piece.

[0011] A noise reduction component is sleeved on the outside of the second connecting strip. The noise reduction component includes a ring and sound-absorbing cotton. The sound-absorbing cotton has a ring-shaped cross-section. The outer shell and the side of the ring are provided with a second opening. The second connecting strip passes through the second opening. The noise reduction component is located on the front and rear sides of the fan respectively. The sound-absorbing cotton is adhered to the inner surface of the ring.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. The protective netting prevents foreign objects from being drawn into the fan, making the fan less prone to damage. The noise reduction components allow the sound-absorbing cotton to absorb the noise generated by the fan, thus providing noise reduction functionality.

[0014] 2. Through the setting of the fixing ring, the first connecting strip, the second connecting strip and the abutment, when the protective net is damaged or the fan needs to be repaired, this product also has the function of facilitating the replacement of the protective net or the maintenance of the fan. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a side view of the connection between the air intake pipe, fixing ring, first connecting strip, second connecting strip, protective net, fan, abutment and noise reduction components of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure at the connection between the first connecting strip, the protective net, and the abutment member of this utility model;

[0019] Figure 4This is a side view of the connection between the first mating strip and the abutment member of this utility model.

[0020] Figure 5 This is a schematic diagram of the noise reduction component of this utility model.

[0021] The following are the labels in the diagram: 1. Air intake pipe; 2. Flange; 3. Fixing ring; 4. First mating strip; 5. Second mating strip; 6. Protective net; 7. Fan; 8. Abutment part; 9. Rotating roller; 10. Connecting piece; 11. Abutment block; 12. Connecting block; 13. Screw; 16. Noise reduction component; 17. Ring; 18. Sound-absorbing cotton. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please refer to Figure 1-5 A chemical waste gas pipeline induced draft device includes an induced draft pipeline 1, with a flange 2 fixedly installed on the outer side of the induced draft pipeline 1; a fixing ring 3, which is fixedly installed inside the induced draft pipeline 1, with a first connecting strip 4 fixedly connected to the front side of the fixing ring 3 and a second connecting strip 5 fixedly connected to the rear side of the fixing ring 3; a protective net 6, which is sleeved on the outer side of the first connecting strip 4; a fan 7, which is sleeved on the outer side of the second connecting strip 5; an abutment 8, which is respectively installed between adjacent first connecting strips 4 and adjacent second connecting strips 5, and the abutment 8 includes a rotating roller 9, a connecting piece 10, an abutment block 11, a connecting block 12 and a screw 13; and a noise reduction component 16, which is sleeved on the outer side of the second connecting strip 5, and the noise reduction component 16 includes a ring 17 and sound-absorbing cotton 18.

[0025] like Figure 1-5 As shown, the flange 2 has perforations on its side, and the sound-absorbing cotton 18 has a ring-shaped cross-section with sound-absorbing holes. The outer side of the protective net 6 is a side ring, and the side of the side ring has a first opening, which facilitates the passage of the first connecting strip 4. The first connecting strip 4 passes through the first opening.

[0026] like Figure 1 , Figure 2 and Figure 5As shown, the outer side of the fan 7 is a shell, and both the shell and the side of the ring 17 are provided with a second opening. The second connecting strip 5 passes through the second opening, which facilitates the passage of the second connecting strip 5. The noise reduction components 16 are located on the front and rear sides of the fan 7, and the sound-absorbing cotton 18 is bonded to the inner surface of the ring 17.

[0027] like Figure 1-4 As shown, the rotating roller 9 is connected to the first mating strip 4 and the second mating strip 5 respectively through bearings. The connecting piece 10 is fixedly connected to the rotating roller 9. The abutting block 11 is fixedly installed on the side of the connecting piece 10. The front abutting block 11 abuts against the side of the edge ring. The rear abutting block 11 abuts against the side of the rear ring 17. The connecting blocks 12 are fixedly installed between adjacent first mating strips 4 and adjacent second mating strips 5 respectively. The screw 13 is screwed into the side of the connecting block 12. The side of the connecting block 12 is provided with a threaded hole that matches the screw 13, which facilitates the screwing of the screw 13. The end of the screw 13 abuts against the side of the connecting piece 10. The end of the screw 13 has a flat head structure.

[0028] In use: First, connect this product to the exhaust pipe using bolt 6, then connect the power supply to the fan 7 to extract exhaust gas. The protective net 6 prevents foreign objects from being drawn into the fan 7, making the fan 7 less prone to damage. The sound-absorbing cotton 18 absorbs the noise generated by the fan 7 through the noise reduction component 16, thus providing noise reduction. When the protective net 6 is damaged or the fan 7 needs maintenance, turn the screw 13 of the corresponding abutment 8. The end of the screw 13 will move away from the connecting piece 10. Then, turn the rotating roller 9 to adjust the connecting piece 10 to a horizontal state. Then, turn the screw 13 in the opposite direction. The abutment block 11 will be located on the side of the screw 13. At this time, the protective net 6 or the fan 7 can be removed, making this product convenient for replacing the protective net 6 or maintaining the fan 7.

[0029] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles and solutions employed. Furthermore, the scope of this invention is not limited to the specific combinations of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A chemical exhaust duct air induction apparatus comprising: The air duct (1) is fixedly installed with a flange plate (2) on the outside; A fixed ring (3) is fixedly installed on the inside of the air duct (1), and a first butt bar (4) is fixedly connected to the front side of the fixed ring (3), and a second butt bar (5) is fixedly connected to the rear side of the fixed ring (3); A protective net (6) is sleeved on the outside of the first butt bar (4); A fan (7) is sleeved on the outside of the second butt bar (5); An abutting piece (8) is respectively installed between adjacent first butt bars (4) and adjacent second butt bars (5), and the abutting piece (8) comprises a rotating roller (9), a connecting sheet (10), an abutting block (11), a connecting block (12) and a screw (13); A noise reduction assembly (16) is sleeved on the outside of the second butt bar (5), and the noise reduction assembly (16) comprises a circular ring (17) and sound-absorbing cotton (18).

2. A chemical exhaust duct air induction device according to claim 1, wherein: The side surface of the flange plate (2) is provided with a perforation, and the cross section of the sound-absorbing cotton (18) is in a ring structure.

3. A chemical exhaust duct air induction device according to claim 1, wherein: The outside of the protective net (6) is a side ring, and the side surface of the side ring is provided with a first opening, and the first butt bar (4) passes through the first opening.

4. A chemical exhaust duct air induction device according to claim 1, wherein: The outside of the fan (7) is a shell, and the side surfaces of the shell and the circular ring (17) are provided with a second opening, and the second butt bar (5) passes through the second opening.

5. A chemical exhaust duct air induction device according to claim 1, wherein: The noise reduction assembly (16) is respectively located on the front and rear sides of the fan (7), and the sound-absorbing cotton (18) is bonded to the inner surface of the circular ring (17).

6. A chemical exhaust duct air induction device according to claim 3, wherein: The rotating roller (9) is connected with the first butt bar (4) and the second butt bar (5) through bearings respectively, the connecting sheet (10) is fixedly connected with the rotating roller (9), the abutting block (11) is fixedly installed on the side surface of the connecting sheet (10), and the front side of the abutting block (11) abuts against the side surface of the side ring.

7. A chemical exhaust duct air induction device according to claim 1, wherein: The rear side of the abutting block (11) abuts against the side surface of the rear side of the circular ring (17), the connecting block (12) is fixedly installed between adjacent first butt bars (4) and adjacent second butt bars (5) respectively, the screw (13) is screwed on the side surface of the connecting block (12), the side surface of the connecting block (12) is provided with a thread hole matched with the screw (13), and the end of the screw (13) abuts against the side surface of the connecting sheet (10).

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