Noise reduction structure for heating ventilation air conditioner ventilation system

Abstract

The utility model relates to the technical field of construction safety protection devices, in particular to a noise reduction structure for a heating ventilation air conditioning ventilation system. Comprising a noise reduction cylinder slidably arranged on a ventilation pipe in a sleeving mode, a plurality of evenly-distributed sound insulation cotton strips are fixedly installed on the inner wall of the noise reduction cylinder, the noise reduction cylinder is fixedly sleeved with an annular clamping hoop, the noise reduction cylinder is slidably sleeved with a cover plate, a dustproof net plate is arranged on the cover plate, and two first clamping grooves are formed in the bottom of the cover plate; a clamping plate is slidably installed in the first clamping groove, an internal thread cylinder slidably penetrates through the clamping plate, a first lead screw is installed in the internal thread cylinder in a threaded mode, a circular groove is formed in the inner wall of one side of the first clamping groove, and the internal thread cylinder is slidably connected with the inner wall of the corresponding circular groove. Through a simple locking structure, the dustproof net can be conveniently and rapidly disassembled and assembled, dust solidified on the dustproof net can be effectively cleaned, and the ventilation effect of the dustproof net can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction safety protection devices, in particular to a noise reduction structure for a heating, ventilation and air conditioning ventilation system. Background Art

[0002] With the continuous development of cities, a large number of buildings are equipped with HVAC systems, which can effectively adjust the indoor temperature and ventilation of the buildings, bringing great convenience to people's lives and work. HVAC ventilation ducts are generally made of aluminum plates or galvanized plates by one-time stamping, which is easy to connect and install. During use, it is generally necessary to set a noise reduction structure to reduce wind noise, thereby reducing the impact of noise on people. The prior art discloses a noise reduction structure for HVAC ventilation systems with an authorization announcement number of CN220648604U, which relates to the field of air conditioning, including a ventilation duct, a noise reduction structure fixedly installed on the ventilation duct, a fixed frame fixedly installed on the inner wall of the ventilation duct, a filtering and cleaning structure fixedly installed on the fixed frame, and two blocks fixedly installed on both sides of the ventilation duct. The utility model, through the arrangement of structures such as a noise reduction sleeve, a recovery box, and a movable baffle, is provided with a plurality of sound insulation cotton grooves on the noise reduction sleeve, in which sound insulation cotton can be installed, thereby being able to reduce the sound generated when airflow passes through, and by opening a vacuum groove in the noise reduction sleeve, the propagation of noise can be further reduced, thereby achieving the effect of noise reduction, and the brush rod can be moved by driving the motor to clean the surface of the filter plate, and the cleaned dust and impurities will fall into the recovery box for recycling, so that the filter plate can be used continuously, and there is no need to repeatedly disassemble the filter plate for cleaning.

[0003] However, it is found in use that the above design is not convenient for quick disassembly and assembly of the dustproof net, and has limited effect on cleaning dust on the dustproof net. It is difficult to effectively clean the dust solidified on the dustproof net, which is not conducive to ensuring ventilation effect. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a noise reduction structure for a HVAC ventilation system, which is convenient for quick disassembly and assembly of the dustproof net, and for effective cleaning of dust solidified on the dustproof net, and can effectively ensure the ventilation effect of the dustproof net, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the technical solution adopted by the utility model is: a noise reduction structure for a heating, ventilation, and air conditioning ventilation system, comprising a noise reduction cylinder slidably mounted on the ventilation pipe, a plurality of evenly arranged sound insulation cotton strips are fixedly installed on the inner wall of the noise reduction cylinder, the noise reduction cylinder is fixedly mounted with an annular clamp, the noise reduction cylinder is slidably mounted with a cover plate, the cover plate is provided with a dustproof mesh plate, the bottom of the cover plate is provided with two first grooves, a clamp plate is slidably mounted in the first groove, the clamp plate is fixed on the top of the annular clamp, an internal threaded cylinder is slidably penetrated on the clamp plate, a first screw rod is installed with the internal thread of the internal threaded cylinder, a circular groove is provided on the inner wall of one side of the first groove, the internal threaded cylinder is slidably connected with the inner wall of the corresponding circular groove, one end of the first screw rod is fixedly mounted with a first bevel gear, and two rotating rods are rotatably mounted on the top of the cover plate, the bottom end of the rotating rod extends into the corresponding circular groove and is fixedly mounted with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0006] In order to facilitate the quick installation and removal of the noise reduction tube:

[0007] As a further improvement of the above technical solution: the noise reduction cylinder also includes two chambers, the chambers are opened on the noise reduction cylinder, a slide is slidably installed in the chamber, two clamping rods are fixedly installed on one side of the slide, two second clamping grooves are opened on both sides of the ventilation pipe, the clamping rods are slidably connected to the inner walls of the corresponding second clamping grooves, and a second screw rod is threaded through the slide.

[0008] The beneficial effect of this improvement is that by such an arrangement, the noise reduction tube can be quickly assembled and disassembled, the cumbersome operation of traditional bolt connection is avoided, and the installation work of the noise reduction structure is greatly facilitated.

[0009] To facilitate the installation of the dust screen:

[0010] As a further improvement of the above technical solution: a rectangular through hole is passed through the cover plate, the dustproof mesh plate is fixedly installed in the rectangular through hole, and the internal space of the noise reduction cylinder is a trumpet-shaped structure.

[0011] The beneficial effect of this improvement is that the rectangular through holes are provided to facilitate installation and fixing of the dustproof screen.

[0012] In order to facilitate the internal threaded barrel to lock the card:

[0013] As a further improvement of the above technical solution: a first through hole is penetrated through the clamping plate, and the internal threaded tube slides through the corresponding first through hole.

[0014] The beneficial effect of this improvement is that by providing the first through hole, the internal threaded tube can be easily locked on the clamping plate.

[0015] In order to facilitate the support and limitation of the first screw rod:

[0016] As a further improvement of the above technical solution: a vertical plate is fixedly installed in the circular groove, the first screw rod rotates and penetrates the vertical plate, a second through hole is penetrated on the top inner wall of the circular groove, and the rotating rod rotates and penetrates the second through hole.

[0017] The beneficial effect of this improvement is that by providing a vertical plate, it is convenient to support and limit the first screw rod.

[0018] To prevent the internally threaded barrel from turning:

[0019] As a further improvement of the above technical solution: a limiting groove is provided on the inner wall at the top of the circular groove, a limiting block is slidably installed in the limiting groove, and the limiting block is fixed on the top of the corresponding internal threaded cylinder.

[0020] The beneficial effect of this improvement is that by providing the limiting groove and the limiting block, it is convenient to limit the internal thread barrel and prevent the internal thread barrel from rotating.

[0021] To facilitate the insertion and exit of the lever into the second slot:

[0022] As a further improvement of the above technical solution: two third through holes are penetrated on the inner wall of one side of the chamber, and the clamping rod slides through the corresponding third through holes.

[0023] The beneficial effect of this improvement is that by providing the third through hole, it is convenient for the card rod to enter and exit the second card slot.

[0024] In order to facilitate the support and limitation of the second screw rod:

[0025] As a further improvement of the above technical solution: a fourth through hole is penetrated on the inner wall of the chamber on the side away from the ventilation pipe, and the second screw rod rotates and penetrates the fourth through hole.

[0026] The beneficial effect of this improvement is that by providing the fourth through hole, it is convenient to support and limit the second screw rod.

[0027] The beneficial effects of the utility model are as follows: through a simple locking structure, the dustproof net can be quickly disassembled and assembled, and then the dust solidified on the dustproof net can be effectively cleaned, which can effectively ensure the ventilation effect of the dustproof net. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the top view of the middle noise reduction tube of the utility model;

[0030] Figure 3It is a three-dimensional cross-sectional assembly structure schematic diagram of the annular clamp and the clamping plate in the utility model;

[0031] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0032] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure of part B.

[0033] In the figure: 1. Noise reduction cylinder; 2. Ventilation pipe; 3. Sound insulation cotton strip; 4. Ring clamp; 5. Cover plate; 6. Dustproof mesh plate; 7. First slot; 8. Clamp plate; 9. Internal threaded cylinder; 10. Circular groove; 11. First screw rod; 12. First bevel gear; 13. Rotating rod; 14. Second bevel gear; 15. Second slot; 16. Clamp rod; 17. Chamber; 18. Slide plate; 19. Second screw rod. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0035] like Figure 1-5As shown, a noise reduction structure for a HVAC ventilation system comprises a noise reduction cylinder 1 slidably mounted on a ventilation pipe 2, a plurality of evenly arranged sound insulation cotton strips 3 are fixedly installed on the inner wall of the noise reduction cylinder 1, an annular clamp 4 is fixedly mounted on the noise reduction cylinder 1, a cover plate 5 is slidably mounted on the noise reduction cylinder 1, a dustproof mesh plate 6 is arranged on the cover plate 5, two first grooves 7 are arranged at the bottom of the cover plate 5, a clamping plate 8 is slidably mounted in the first groove 7, the clamping plate 8 is fixed on the top of the annular clamp 4, an internal threaded cylinder 9 is slidably penetrated on the clamping plate 8, a first screw rod 11 is installed on the internal thread of the internal threaded cylinder 9, a circular groove 10 is arranged on the inner wall of one side of the first groove 7, and the internal threaded cylinder 9 is slidably connected to the inner wall of the corresponding circular groove 10 Then, a first bevel gear 12 is fixedly installed at one end of the first screw rod 11, and two rotating rods 13 are rotatably installed on the top of the cover plate 5. The bottom end of the rotating rod 13 extends into the corresponding circular groove 10 and is fixedly installed with a second bevel gear 14. The second bevel gear 14 is meshed with the first bevel gear 12. Through a simple locking structure, it is convenient to quickly disassemble and assemble the dustproof net, and then to effectively clean the dust solidified on the dustproof net, which can effectively ensure the ventilation effect of the dustproof net. The noise reduction cylinder 1 also includes two chambers 17, and the chamber 17 is opened on the noise reduction cylinder 1. A slide plate 18 is slidably installed in the chamber 17. Two clamping rods 16 are fixedly installed on one side of the slide plate 18. Two second bevel gears 14 are provided on both sides of the ventilation pipe 2. The second card slot 15, the card rod 16 is slidably connected with the inner wall of the corresponding second card slot 15, and the second screw rod 19 is threaded through the slide plate 18. Through this arrangement, it is convenient to quickly assemble and disassemble the noise reduction cylinder 1, avoiding the cumbersome operation of traditional bolt connection and fixing, which brings great convenience to the installation of the noise reduction structure. The cover plate 5 is penetrated by a rectangular through hole, and the dustproof mesh plate 6 is fixedly installed in the rectangular through hole. The internal space of the noise reduction cylinder 1 is a trumpet-shaped structure. By setting the rectangular through hole, it is convenient to install and fix the dustproof mesh plate 6. The card plate 8 is penetrated by a first through hole, and the internal threaded tube 9 slides through the corresponding first through hole. By setting the first through hole, it is convenient for the internal threaded tube 9 to lock the card plate 8. A vertical plate is fixedly installed in the circular groove 10, the first screw rod 11 rotates and penetrates the vertical plate, a second through hole is penetrated on the top inner wall of the circular groove 10, the rotating rod 13 rotates and penetrates the second through hole, and the vertical plate is provided to facilitate the support and limitation of the first screw rod 11, a limiting groove is provided on the top inner wall of the circular groove 10, a limiting block is slidably installed in the limiting groove, the limiting block is fixed to the top of the corresponding internal threaded tube 9, and the limiting groove and the limiting block are provided to facilitate the limitation of the internal threaded tube 9 to prevent the internal threaded tube 9 from rotating, two third through holes are penetrated on the inner wall of one side of the chamber 17, the clamping rod 16 slides and penetrates the corresponding third through hole, and the third through hole is provided to facilitate the clamping rod 16 to enter and exit the second clamping groove 15,A fourth through hole is formed on the inner wall of the chamber 17 away from the ventilation pipe 2. The second screw rod 19 rotates through the fourth through hole. The fourth through hole is provided to facilitate the support and position limiting of the second screw rod 19.

[0036] The working principle of the utility model is as follows: when in use, the wind in the ventilation pipe 2 is blown into the space inside the noise reduction cylinder 1 and gradually expands, thereby reducing the wind speed. At the same time, the multiple sound insulation cotton strips 3 arranged on the inner wall of the noise reduction cylinder 1 can effectively slow down the wind speed and can effectively reflect and isolate the noise, so that the noise is gradually attenuated in the noise reduction cylinder 1. When it is necessary to clean the dustproof mesh plate 6, first rotate the two rotating rods 13, and the rotating rods 13 drive the second bevel gear 14 to rotate, so that the first bevel gear 12 is driven to rotate, and the first bevel gear 12 drives the first screw rod 11 to rotate, so that the internal threaded cylinder 9 is driven to slide and disengage from the corresponding clamping plate 8, so that the fixation of the clamping plate 8 is released, and then the cover plate 5 is lifted, so that the cover plate 5 slides out of the noise reduction cylinder 1, and the clamping plate 8 slides out of the corresponding first clamping slot 7, and the cover plate 5 is removed, and then The dust on the dustproof mesh plate 6 can be cleaned. Through such a configuration, the dustproof mesh can be quickly disassembled and assembled, and then the dust solidified on the dustproof mesh can be effectively cleaned, which can effectively ensure the ventilation effect of the dustproof mesh. When the noise reduction cylinder 1 needs to be installed, the noise reduction cylinder 1 is first slidably sleeved on one end of the ventilation pipe 2, and then the two second screw rods 19 are rotated. The second screw rods 19 drive the slide plate 18 to slide in the corresponding chamber 17, so that the two clamping rods 16 are driven to slide into the corresponding second clamping grooves 15 respectively, so that the ventilation pipe 2 is fixed, and the ventilation pipe 2 and the noise reduction cylinder 1 are connected and fixed. Through such a configuration, the noise reduction cylinder 1 can be quickly assembled and disassembled, and the cumbersome operation of traditional bolt connection is avoided, which greatly facilitates the installation of the noise reduction structure.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A noise reduction structure for a heating, ventilation, air conditioning and ventilation system, comprising a noise reduction cylinder (1) slidably mounted on a ventilation pipe (2), characterized in that: A plurality of evenly arranged sound insulation cotton strips (3) are fixedly mounted on the inner wall of the noise reduction cylinder (1); an annular clamp (4) is fixedly mounted on the noise reduction cylinder (1); a cover plate (5) is slidably mounted on the noise reduction cylinder (1); a dustproof mesh plate (6) is mounted on the cover plate (5); two first grooves (7) are provided at the bottom of the cover plate (5); a clamping plate (8) is slidably mounted in the first grooves (7); the clamping plate (8) is fixed on the top of the annular clamp (4); an internal threaded cylinder (9) is slidably penetrated on the clamping plate (8); the internal threaded cylinder ( 9) A first screw rod (11) is installed with an internal thread, a circular groove (10) is opened on the inner wall of one side of the first slot (7), the internal thread tube (9) is slidably connected with the inner wall of the corresponding circular groove (10), a first bevel gear (12) is fixedly installed on one end of the first screw rod (11), two rotating rods (13) are rotatably installed on the top of the cover plate (5), the bottom end of the rotating rod (13) extends into the corresponding circular groove (10) and is fixedly installed with a second bevel gear (14), and the second bevel gear (14) is meshed with the first bevel gear (12).

2. A noise reduction structure for a HVAC system according to claim 1, characterized in that: The noise reduction cylinder (1) further comprises two chambers (17), wherein the chambers (17) are provided on the noise reduction cylinder (1), wherein a slide plate (18) is slidably mounted in the chamber (17), wherein two clamping rods (16) are fixedly mounted on one side of the slide plate (18), wherein two second clamping grooves (15) are provided on both sides of the ventilation pipe (2), wherein the clamping rods (16) are slidably connected to the inner walls of the corresponding second clamping grooves (15), and wherein a second screw rod (19) is threadedly penetrated on the slide plate (18).

3. A noise reduction structure for a HVAC system according to claim 1, characterized in that: The cover plate (5) is penetrated by a rectangular through hole, the dustproof screen plate (6) is fixedly installed in the rectangular through hole, and the internal space of the noise reduction cylinder (1) is a trumpet-shaped structure.

4. A noise reduction structure for a HVAC system according to claim 1, characterized in that: The clamping plate (8) is penetrated by a first through hole, and the internal threaded tube (9) slides through the corresponding first through hole.

5. The noise reduction structure for a HVAC system according to claim 1, characterized in that: A vertical plate is fixedly installed in the circular groove (10), the first screw rod (11) rotates and penetrates the vertical plate, a second through hole is penetrated on the top inner wall of the circular groove (10), and the rotating rod (13) rotates and penetrates the second through hole.

6. The noise reduction structure for a HVAC system according to claim 1, characterized in that: A limiting groove is provided on the inner wall of the top of the circular groove (10), a limiting block is slidably installed in the limiting groove, and the limiting block is fixed on the top of the corresponding internal threaded cylinder (9).

7. A noise reduction structure for a HVAC system according to claim 2, characterized in that: Two third through holes are penetrated on one inner wall of the chamber (17), and the clamping rod (16) slides through the corresponding third through holes.

8. A noise reduction structure for a HVAC system according to claim 2, characterized in that: A fourth through hole is formed on the inner wall of the chamber (17) at a side away from the ventilation pipe (2), and the second screw rod (19) rotates and passes through the fourth through hole.

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