Air filtering device for chemical production

Abstract

The utility model relates to the technical field of air filtering, in particular to an air filtering device for chemical production, which comprises an air duct cylinder, a sound insulation layer arranged on the outer wall of the air duct cylinder, an exhaust fan and a filter screen arranged in the air duct cylinder, and a first noise reduction group arranged on the inner wall of the air duct cylinder. The first noise reduction set and the second noise reduction set are composed of noise reduction barrels, sliding rods, springs and damping sleeves, cross-shaped rods are arranged on the sliding rods, smooth holes are formed in the cross-shaped rods, open grooves are formed in the inner wall of the air duct barrel, guide columns are arranged in the open grooves, a rain baffle cover is arranged at the right end of the air duct barrel, clamping grooves are formed in the air duct barrel, and sealing rings are arranged in the clamping grooves. The sound insulation layer is arranged on the outer wall of the air duct cylinder, and the damping noise reduction sliding structure is arranged on the inner wall of the air duct cylinder, so that the noise reduction performance of the air duct cylinder on the air filtering device for chemical production is improved, and the sealing and rain shielding performance of a filter screen part on the air filtering device for chemical production is integrally improved.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, specifically an air filtration device for chemical production. Background Technology

[0002] Clean air needs to be supplied to the production equipment during the chemical production process. Therefore, air filtration devices need to be connected to the production equipment to ensure the cleanliness of the air during production, thereby ensuring the quality of chemical products.

[0003] Currently, existing air filtration devices used in chemical production employ exhaust fans within the ductwork to draw in outside air. However, these exhaust fans generate vibrations during operation, which are transmitted to the ductwork and dissipate to the outside, causing environmental pollution. This significantly reduces the noise reduction capability of the ductwork in chemical production air filtration devices. Furthermore, existing air filtration devices for chemical production have poor sealing and rain protection at the filter screen. Utility Model Content

[0004] The purpose of this utility model is to provide an air filtration device for chemical production, so as to solve the problems of low noise reduction performance of the air duct of the air filtration device for chemical production and low sealing and rain protection performance of the filter screen part of the air filtration device for chemical production in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air filtration device for chemical production, comprising a duct, the outer wall of which is provided with a sound insulation layer, an exhaust fan and a filter screen inside the duct, the inner wall of which is provided with a first noise reduction group and a second noise reduction group, the first noise reduction group and the second noise reduction group being composed of a noise reduction cylinder, a slide rod, a spring, and a damping sleeve, the slide rod being provided with a cross rod, the cross rod being provided with a smooth hole, the inner wall of which is provided with an opening groove, the opening groove being provided with a guide post, the right end of which is provided with a rain shield cover, and a slot being opened inside the duct, the slot being provided with a sealing ring.

[0006] Preferably, the damping sleeve is installed in the inner cavity of the noise reduction cylinder, the slide rod has a T-shaped cross-section and slides in damping contact with the damping sleeve, and the two ends of the spring are fixedly installed in the inner cavity of the noise reduction cylinder and the slide rod.

[0007] Preferably, the cross rod is slidably sleeved with the guide post through a smooth hole, and the side cross-section of the smooth hole and the guide post is a square structure.

[0008] Preferably, the cross bar does not contact the opening slot, and the cross bar is fixedly installed to the housing of the exhaust fan.

[0009] Preferably, the sound insulation layer is evenly laid along the outer wall of the air duct.

[0010] Preferably, the sealing ring has a U-shaped cross-section and is squeezed and fitted onto the outer shell of the filter screen.

[0011] Preferably, the rain shield cover has an overall inclined cover structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention improves the noise reduction performance of air ducts used in chemical production by setting a sound insulation layer on the outer wall of the air duct and a damping and noise reduction sliding structure on the inner wall of the air duct.

[0014] This invention improves the sealing and rainproof performance of the filter part of the air filtration device for chemical production by setting a rainproof cover structure at the air inlet of the air duct and a groove structure with a sealing ring at the connection between the air duct and the filter. Attached Figure Description

[0015] Figure 1 This is a cross-sectional elevation view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 Enlarged view at point X;

[0017] Figure 3 This is a side view of the rain shield cover structure of this utility model;

[0018] Figure 4 For the present utility model Figure 1 Enlarged view of the Y-axis.

[0019] In the diagram: 1. Air duct, 11. Sound insulation layer, 12. Exhaust fan, 2. Slot, 21. Sealing ring, 22. Filter, 3. First noise reduction group, 31. Noise reduction cylinder, 32. Slide rod, 33. Spring, 34. Damping sleeve, 4. Second noise reduction group, 5. Opening slot, 51. Guide post, 6. Cross rod, 61. Smooth hole, 7. Rain guard cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Please see Figures 1 to 4The diagram shows an air filtration device for chemical production, including a duct 1. The outer wall of the duct 1 is provided with a sound insulation layer 11. The duct 1 is provided with an exhaust fan 12 and a filter screen 22. The inner wall of the duct 1 is provided with a first noise reduction group 3 and a second noise reduction group 4. The first noise reduction group 3 and the second noise reduction group 4 are composed of a noise reduction cylinder 31, a slide rod 32, a spring 33, and a damping sleeve 34. The slide rod 32 is provided with a cross rod 6, and the cross rod 6 is provided with a smooth hole 61. The inner wall of the duct 1 is provided with an opening groove 5, and a guide post 51 is provided in the opening groove 5. The right end of the duct 1 is provided with a rain shield 7. The duct 1 is provided with a slot 2, and a sealing ring 21 is provided in the slot 2.

[0022] The damping sleeve 34 is located in the inner cavity of the noise reduction cylinder 31. The cross section of the slide rod 32 is T-shaped and slides in damping contact with the damping sleeve 34. The damping sleeve 34 is made of damping silicone material and has the effect of damping force relief and noise reduction.

[0023] The two ends of the spring 33 are fixedly installed in the inner cavity of the noise reduction cylinder 31 and the slide bar 32, and the spring 33 achieves the buffering and force-relieving effect on the slide bar 32.

[0024] The cross rod 6 is slidably connected to the guide post 51 through the smooth hole 61. The side cross section of the smooth hole 61 and the guide post 51 is a square structure. The inner wall of the smooth hole 61 is provided with a smooth layer, which is a graphite powder density coating layer, which has excellent sliding smoothness and does not generate noise.

[0025] The cross bar 6 does not contact the slot 5, and without contact, there will be no sliding noise.

[0026] The cross rod 6 is fixedly installed on the housing of the exhaust fan 12. When the exhaust fan 12 is working, the cross rod 6 drives the exhaust fan 12 to slide laterally, so as to prepare for damping and noise reduction later.

[0027] The sound insulation layer 11 is evenly laid along the outer wall of the air duct 1. The sound insulation layer 11 is made of polyurethane foam board. Polyurethane foam has good sound insulation effect, flame retardant ability, and durability.

[0028] The sealing ring 21 has a U-shaped cross-section. The sealing ring 21 is squeezed and fitted with the outer shell of the filter screen 22. The sealing ring 21 is made of vulcanized rubber, which has elastic sealing properties. Combined with the U-shaped structure, it greatly improves the sealing performance of the filter screen 22.

[0029] The rain cover 7 has an overall inclined cover structure, which achieves the effect of rain protection without affecting the air intake and filtration.

[0030] In this implementation scheme, when the exhaust fan 12 is started, it will generate vibration, which will drive the cross rod 6 to move laterally along the guide post 51 through the smooth hole 61. At the same time, the cross rod 6 will drive the slide rod 32 to slide along the damping sleeve 34 to achieve damping, force relief and noise reduction. The spring 33 will be compressed and deformed to buffer the compressive force. Meanwhile, the sound insulation layer 11 will also prevent internal noise from being transmitted to the outside environment. It can guide and dampen the vibration generated by the operation of the exhaust fan 12 to reduce noise, thereby improving the noise reduction performance of the air duct 1 of the air filtration device for chemical production.

[0031] In addition, by setting a rain shield cover 7 structure at the air inlet of the air duct 1, a rain-proof effect is achieved, and a U-shaped groove 2 structure with a sealing ring 21 is set at the connection between the air duct 1 and the filter screen 22, the overall sealing and rain-proof performance of the filter screen 22 part of the air filtration device for chemical production is improved.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air filtration device for chemical production, characterized in that, include: The duct tube (1) has a sound insulation layer (11) on its outer wall, an exhaust fan (12) and a filter (22) inside the duct tube (1), and a first noise reduction group (3) and a second noise reduction group (4) on the inner wall of the duct tube (1). The first noise reduction group (3) and the second noise reduction group (4) are composed of a noise reduction tube (31), a slide rod (32), a spring (33), and a damping sleeve (34). The slide rod (32) has a cross rod (6) and a smooth hole (61) on the cross rod (6). The inner wall of the duct tube (1) has an opening groove (5) and a guide post (51) inside the opening groove (5). The right end of the duct tube (1) has a rain shield cover (7). The duct tube (1) has a slot (2) inside and a sealing ring (21) inside the slot (2).

2. The air filtration device for chemical production according to claim 1, characterized in that: The damping sleeve (34) is located in the inner cavity of the noise reduction cylinder (31). The slide rod (32) has a T-shaped cross section and slides in damping contact with the damping sleeve (34). The two ends of the spring (33) are fixedly installed in the inner cavity of the noise reduction cylinder (31) and the slide rod (32).

3. The air filtration device for chemical production according to claim 1, characterized in that: The cross rod (6) is slidably connected to the guide post (51) through a smooth hole (61), and the side cross section of the smooth hole (61) and the guide post (51) is a square structure.

4. An air filtration device for chemical production according to claim 1, characterized in that: The cross rod (6) does not contact the opening slot (5), and the cross rod (6) is fixedly installed with the outer shell of the exhaust fan (12).

5. An air filtration device for chemical production according to claim 1, characterized in that: The sound insulation layer (11) is evenly laid along the outer wall of the air duct (1).

6. An air filtration device for chemical production according to claim 1, characterized in that: The sealing ring (21) has a U-shaped cross-section and is squeezed and sleeved with the outer shell of the filter screen (22).

7. An air filtration device for chemical production according to claim 1, characterized in that: The rain shield cover (7) is an overall inclined cover structure.

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