Air inlet system of air compressor

Abstract

The utility model provides an air inlet system of an air compressor. The air inlet system comprises a first noise reduction bin and a second noise reduction bin, wherein the first noise reduction bin is connected to a flow guide support and internally provided with sound absorption materials, and a sound filtering assembly is embedded in the second noise reduction bin. Air flow forms flocculated flow after passing through the flow guide support, enters the first noise reduction bin from bottom to top, enters the second noise reduction bin along an outlet in the side of the bin wall and then is conveyed to the air filter. An external air source is dredged by a flow guide plate and meshes on a flow guide support, so that the entering air flow is more uniform, and the energy efficiency management of the air source is improved; when the air flow passes through a first noise reduction bin and a second noise reduction bin, the flowing direction is changed for multiple times, and sound wave transmission energy is weakened; the air compressor is used for solving the noise pollution problem caused by the fact that air flows at high speed in an air inlet channel and rubs a pipeline wall during air inlet of the air compressor.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air intake system for an air compressor. Background Art

[0002] A screw air compressor is a device used to compress gas and is widely used in daily production and life. The air compressor includes a compressor with an air inlet and an air inlet system. The air inlet system is provided with an air inlet duct. One end of the air inlet duct is the air inlet, and the other end is connected to the air inlet of the compressor through an air filter to provide an air source for the compressor. General air compressors do not have an independent air inlet system during use. The gas is not guided when it enters from the air inlet, and the gas flow rate is uneven, resulting in low air intake efficiency. In addition, when the air compressor is intaken, the friction between the gas and the pipe wall at high speed in the air inlet duct is likely to produce large airflow noise, which affects production and life. Utility Model Content

[0003] The utility model aims to provide an air intake system for an air compressor, so as to improve the air intake efficiency of the air compressor and eliminate noise.

[0004] In order to solve the above technical problems, the utility model provides an air compressor air intake system, including a guide support and a noise reduction chamber connected to the guide support, wherein the guide support includes a first guide plate erected on both sides of the guide plate in its own height direction, a second guide plate staggered and connected between the first guide plates, and a support plate covering the top of the first guide plate;

[0005] The second guide plate is vertically enclosed with the first guide plate to guide the airflow into the noise reduction chamber from bottom to top.

[0006] In a preferred embodiment: the noise reduction chamber includes a first noise reduction chamber connected to a guide support, and the first noise reduction chamber is surrounded by sound-absorbing materials. The airflow forms a flocculent flow through the guide support and enters the first noise reduction chamber from bottom to top, and enters the second noise reduction chamber embedded with a sound filter component along the side wall outlet of the first noise reduction chamber, and is then sent to the air filter.

[0007] In a preferred embodiment: mesh holes are provided in the direction where the support plate abuts against the first noise reduction chamber, and air flows through the mesh holes to form flocculation.

[0008] In a preferred embodiment: the sound filter assembly includes a first sound filter part and a second sound filter part arranged at intervals, the first sound filter part is provided with an axial hole, and a reflection groove is arranged around the inner wall of the axial hole; the second sound filter part is provided with an air flow ramp that passes through and connects to the air filter inlet.

[0009] In a preferred embodiment, the reflecting groove is a V-shaped groove, and the reflecting inclination angle of the V-shaped groove is not greater than 60°.

[0010] In a preferred embodiment: the airflow ramp comprises a first channel, a second channel and a third channel which are radially parallel to each other, and two ends of the second channel are respectively connected to the first channel and the third channel through angle bends;

[0011] The first channel and the third channel have the same length.

[0012] In a preferred embodiment: the inner angle of the corner bend is not greater than 120°.

[0013] In a preferred embodiment: the second noise reduction chamber is made of sound-absorbing material.

[0014] In a preferred embodiment: the end panels of the first noise reduction chamber are connected via a detachable structure, and the detachable structure is a bolt or slot connection.

[0015] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0016] The utility model provides an air intake system for an air compressor, which guides the air flow direction and flow velocity through the guide plate and mesh holes on the guide support, thereby solving the problem of low air intake efficiency caused by uneven air intake source flow velocity in the air compressor system.

[0017] The utility model combines the first noise reduction chamber and the second noise reduction chamber on the basis of air source guidance to achieve step-by-step noise reduction by repeatedly changing the flow direction of the airflow, so as to solve the noise pollution problem caused by the friction of the pipeline wall when the air compressor intakes air in the air inlet duct at a high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the appearance of an embodiment of the utility model;

[0019] Figure 2 It is an axial view of the guide support in the embodiment of the utility model;

[0020] Figure 3 It is an axial view of the first noise reduction chamber in the embodiment of the utility model;

[0021] Figure 4 is an internal perspective view of the second noise reduction chamber in the embodiment of the utility model;

[0022] Figure 5 This is a radial cross-sectional view of the first sound filter portion of the embodiment of the utility model;

[0023] Figure 6 It is a radial cross-sectional view of the second sound filter portion of the embodiment of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0027] refer to Figure 1-6 , this embodiment provides an air compressor air intake system, which is composed of a guide support 1, a first noise reduction chamber 3 and a second noise reduction chamber 4 connected in sequence. The two adjacent sides of the first noise reduction chamber 3 are connected to the guide support 1 and the second noise reduction chamber 4 respectively. The airflow enters the first noise reduction chamber 4 from the bottom of the first noise reduction chamber 3, and after changing the conveying direction in the chamber, it enters the second noise reduction chamber 4 embedded with a sound filter component for silencing and noise reduction. Since the first noise reduction chamber 3 is surrounded by sound-absorbing materials, the airflow from the guide support 1 directly hits the inner wall of the first noise reduction chamber 3 during the process of propagation in a straight line, but no additional sound is generated. In addition, the continuous airflow gathers in the first noise reduction chamber 3, and the propagation angle of the airflow changes and forms a vortex after colliding with the inner wall of the chamber side, which further enhances the transmission efficiency of the airflow.

[0028] After being combed by the guide support 1 to form floccules, the airflow enters the first noise reduction chamber 3 from bottom to top, and enters the second noise reduction chamber 4 embedded with a sound filter component along the side wall outlet of the first noise reduction chamber 3 and is then sent to the air filter. From the structural composition, the guide support 1 includes a first guide plate 11 erected on both sides of its own height direction, a second guide plate 12 connected between the first guide plates 11 at an offset interval, and a support plate 13 covering the top of the first guide plate 11. The second guide plates 12 are arranged one above and one below, one in front and one behind, and are vertically enclosed with the first guide plate 11 to guide the external airflow to enter the first noise reduction chamber 3 from bottom to top in an orderly manner. The support plate 13 is provided with a mesh 131 in the direction of abutting the first noise reduction chamber 3. The airflow flows through the mesh 131 to form floccules, thereby preliminarily rectifying the airflow, so that the direction and flow rate of the introduced external airflow are effectively regulated at the position of the guide support 1, thereby enhancing the energy efficiency management of the airflow. However, considering that the airflow inside the first noise reduction chamber 3 scours and rubs the sound-absorbing material on the inner wall of the first noise reduction chamber 3 for a long time and at a high frequency, the friction produces an electrostatic adsorption effect, so that some micro-particles such as dust and hair carried in the airflow accumulate more and more on the sound-absorbing material. In addition, the structure of the sound-absorbing material can well preserve the particulate matter in the extracted gas, which will inevitably affect the silencing effect over time. In view of this, the utility model connects the end panel 31 of the first noise reduction chamber 3 with a detachable structure, and the detachable structure is a bolt or slot connection. The end panel 31 is disassembled to clean or replace the sound-absorbing material in the first noise reduction chamber 3, so as to ensure the cleanliness of the air source and improve the quality of the compressed air.

[0029] The turbulent air source enters the second noise reduction chamber 4 through the connection port 32 on the side of the first noise reduction chamber 3. The first sound filter 41 and the second sound filter 42 are arranged axially in the second noise reduction chamber 4. The first sound filter 41 is provided with a plurality of axial holes 411. The inner wall of the axial hole 411 is provided with a reflection groove. The radial section of the first sound filter 41 is shown as follows: Figure 5 As shown, the cross-sectional shape of the reflection groove arranged on the inner wall of the shaft hole 411 is V-shaped, and the wall reflection inclination angle a1 of the V-shaped groove is not greater than 60°. When the sound wave airflow passes through this channel, it is reflected by the continuous V-shaped grooves to form turbulence, which is used to further weaken the energy propagation of the sound wave noise.

[0030] After the sonic airflow flows through the first sound filter part 41, part of the noise is reflected and eliminated by the V-shaped groove of the reflection groove, and then the sonic airflow continues to flow into the cavity formed by the interval between the first sound filter part 41 and the second sound filter part 42. A large amount of sonic airflow gathers at this position and the pressure in the cavity increases accordingly. Obviously, when the high-pressure gas surges at high speed in the cavity, it will continue to generate noise due to friction with the surrounding cavity walls. In order to solve the problem that the first sound filter part 41 fails to completely eliminate the noise and may cause the noise source to overflow. The utility model makes the second sound filter part 42 at the end position as a whole of sound-absorbing material. When the sonic airflow collides and squeezes the second sound filter part 42, most of the noise sound waves will be absorbed by the sound-absorbing material, and a small part of the noise sound waves will be squeezed into the air flow ramp 421 that runs through the second sound filter part 42 along with the surging airflow, and continue to consume energy after multiple turns and collisions in the ramp 421 until it reaches the air filter inlet.

[0031] The internal airflow ramp layout of the second sound filter 42 is as follows Figure 6 As shown, its linear composition includes a first channel 4211, a second channel 4212 and a third channel 4213 which are parallel to each other along the airflow transmission direction, and the two ends of the second channel 4212 are respectively connected to the first channel 4211 and the third channel 4213 through a folded angle bend. From the perspective of spatial position, the first channel 4211 and the third channel 4213 are equal in length and arranged in a staggered manner front to back. The second channel 4212 located in the middle is longer than the first channel 4211, and its two ends are respectively connected to the first channel 4211 and the third channel 4213 through a folded angle bend, and the inner angle a2 of the folded angle bend is not greater than 120°. Through the analysis of experimental simulation data, it is concluded that when the inner angle a2 of the above-mentioned angle bend is close to 120°, the sound wave airflow can change the transmission direction multiple times in the airflow ramp of the second sound filter part and dissipate energy through impact to achieve the purpose of eliminating noise sound waves to the greatest extent. At the same time, the obtuse angle connection transition can also make the sound wave airflow pass through the airflow channel more smoothly. The second sound filter part 4 is a sound-absorbing material, and the pipe wall of the airflow ramp 421 arranged therein also has the performance of absorbing sound waves, which can absorb noise waves to the greatest extent and achieve excellent noise reduction effect.

[0032] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. An air compressor air intake system, characterized in that: The invention comprises a flow guide support (1) and a noise reduction chamber connected to the flow guide support (1), wherein the flow guide support (1) comprises a first flow guide plate (11) erected on both sides of the flow guide support in its own height direction, a second flow guide plate (12) connected between the first flow guide plates (11) at an offset interval, and a support plate (13) covering the top of the first flow guide plate (11); The second guide plate (12) is vertically enclosed with the first guide plate (11) to guide the airflow to enter the noise reduction chamber from bottom to top.

2. An air compressor air intake system according to claim 1, characterized in that: The noise reduction chamber comprises a first noise reduction chamber (3) connected to a flow guide support (1), wherein a sound absorbing material is arranged around the first noise reduction chamber (3), and airflow forms a flocculent flow through the flow guide support (1) and enters the first noise reduction chamber (3) from bottom to top, and enters a second noise reduction chamber (4) embedded with a sound filter component along a side wall outlet of the first noise reduction chamber (3) and is then sent to an air filter.

3. An air compressor air intake system according to claim 2, characterized in that: The support plate (13) is provided with mesh holes (131) in the direction where it abuts against the first noise reduction chamber (3), and air flows through the mesh holes (131) to form flocculation.

4. The air compressor air intake system according to claim 2, characterized in that: The sound filter assembly comprises a first sound filter portion (41) and a second sound filter portion (42) arranged at intervals, wherein the first sound filter portion (41) is provided with an axial hole extending therethrough, and a reflection groove is arranged around the inner wall of the axial hole; and the second sound filter portion (42) is provided with an air flow ramp (421) extending therethrough and connected to an air filter inlet.

5. An air compressor air intake system according to claim 4, characterized in that: The reflecting groove is a V-shaped groove, and the reflecting inclination angle of the V-shaped groove is not greater than 60°.

6. The air compressor air intake system according to claim 4, characterized in that: The airflow ramp (421) comprises a first channel (421-1), a second channel (421-2) and a third channel (421-3) which are radially parallel to each other, and two ends of the second channel (421-2) are respectively connected to the first channel (421-1) and the third channel (421-3) through angle bends; The first channel (421-1) and the third channel (421-3) are of equal length.

7. An air compressor air intake system according to claim 6, characterized in that: The inner angle of the corner bend is not greater than 120°.

8. The air compressor air intake system according to claim 2, characterized in that: The second noise reduction chamber (4) is made of sound-absorbing material.

9. The air compressor air intake system according to claim 2, characterized in that: The end panels of the first noise reduction chamber (3) are connected via a detachable structure, and the detachable structure is a bolt or slot connection.

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