Silenced exhaust valve

Abstract

The utility model discloses an exhaust valve of sound attenuation, including valve body, with the valve core of valve body screw thread cooperation and with base connected with valve body, be equipped with the air hole in the base, still be equipped with the air column for plugging the air hole on the valve core, with the recess of the circumference of air column is equipped with, through the step -by -step upward movement of air column, to make the recess release airflow's flow gradually increase, still be equipped with the installation cavity in the base, and be equipped with the sound attenuation column in the installation cavity, and the outer wall surface of installation cavity still is equipped with the notched mouth. Above all, because the recess is equipped with on the air column, and along with the air column to the air hole above movement, gradually increase the airflow cross section between recess and air hole, and then make the equipment realize the regulation and control of airflow, especially, the installation cavity of base still is equipped with sound attenuation column, utilizes sound attenuation column to reduce the noise produced when airflow discharges outward.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a noise-reducing exhaust valve. Background Technology

[0002] The air valve is a crucial component of the compressor cylinder, responsible for the intake and exhaust of gas. Traditional air valves consist of a valve seat, valve plate, spring, lift limiter, bolts, etc. Existing air valves, in addition to fulfilling basic intake and exhaust functions, must also control the gas flow rate, thus achieving the dual function of a throttle valve and a speed control valve. To address this, our company launched a technical solution with announcement number CN218377748U; however, it still suffers from excessive noise during use. Utility Model Content

[0003] The purpose of this invention is to provide a noise-reducing exhaust valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a noise-absorbing exhaust valve, comprising a valve body, a valve core threaded to the valve body, and a base connected to the valve body; the base has an air hole, and the valve core also has an air column for sealing the air hole, and the circumferential surface of the air column has a groove; by gradually moving the air column upward, the flow rate of the air released by the groove gradually increases; the base also has an installation cavity, and a noise-absorbing column is installed in the installation cavity, and the outer wall surface of the installation cavity also has a slot.

[0005] As a preferred technical solution of this utility model: the air column is further provided with an installation groove for installing a sealing ring, and the sealing ring in the installation groove is connected to the air hole to seal the air hole.

[0006] As a preferred technical solution of this utility model: the other end of the valve core passes through the valve body and is connected to the provided torsion cap, and the torsion cap causes the air column to be inserted into the air hole or separated from the air hole.

[0007] As a preferred technical solution of this utility model: when the valve core is viewed from the front, the cross-section of the groove is an inverted V shape, and the number of the grooves is one.

[0008] As a preferred technical solution of this utility model: the outer wall and inner wall of the sound-absorbing column are provided with sound-absorbing holes that are connected to each other, and the sound-absorbing holes are arranged in a circumferential array on the inner wall and outer wall of the sound-absorbing column.

[0009] As a preferred technical solution of this utility model: the sound-absorbing hole includes a first through hole and a second through hole, and the first through hole and the second through hole are connected and communicate with each other.

[0010] As a preferred technical solution of this utility model: the number of the sound-absorbing holes is multiple, and the multiple sound-absorbing holes are connected and distributed along the height direction of the sound-absorbing column.

[0011] The beneficial effects of this utility model by adopting the above technical solution are as follows: Since the air column is provided with a groove, and as the air column moves upward to the air hole, the airflow cross section between the groove and the air hole gradually increases, thereby enabling the device to achieve airflow regulation and control. In particular, the mounting cavity of the base is also provided with a sound-absorbing column, which reduces the noise generated when the airflow is discharged outward. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of the main structure of this utility model; Figure 2 This is an exploded view of the main structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the base of this utility model; Figure 4 This is a schematic diagram of the front structure of the sound-absorbing column of this utility model; Figure 5 This is a schematic cross-sectional view of the sound-absorbing column of this utility model; Figure 6 This is a schematic diagram of the main structure of the valve core of this utility model; Figure 7 This is a structural schematic diagram of the valve core of this utility model when viewed from the front.

[0013] In the diagram: 1. Valve body; 2. Torque cap; 3. Base; 4. Valve core; 5. Groove; 6. Air hole; 7. Air column; 8. Silencing column; 9. Slot; 10. Mounting cavity; 11. Silencing hole; 12. First through hole; 13. Mounting groove; 14. Second through hole. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0015] Please see Figure 1-7 This utility model provides an embodiment of a noise-absorbing exhaust valve, comprising a valve body 1, a valve core 4 threadedly fitted to the valve body 1, and a base 3 connected to the valve body 1. The base 3 has an air hole 6, and the valve core 4 has an air column 7 for sealing the air hole 6, with a groove 5 on the circumferential surface of the air column 7. As the air column 7 moves upwards, the flow rate of the air released from the groove 5 gradually increases. The base 3 also has a mounting cavity 10, and a noise-absorbing column 8 is installed within the mounting cavity 10. The outer wall of the mounting cavity 10 also has a slot 9. In summary, because the air column 7 has a groove 5, and as the air column 7 moves upwards towards the air hole 6, the airflow cross-section between the groove 5 and the air hole 6 gradually increases, thereby enabling the device to regulate and control the airflow. In particular, the noise-absorbing column 8 within the mounting cavity 10 of the base 3 reduces the noise generated when the airflow is discharged outwards.

[0016] To improve the sealing performance of the device for the air hole 6, the air column 7 is also provided with a mounting groove 13 for installing a sealing ring. The sealing ring in the mounting groove 13 is connected to the air hole 6 to seal the air hole 6. Therefore, when the sealing ring in the mounting groove 13 enters the air hole 6, it can fill the gap between the air hole 6 and the air column 7, thereby reducing the occurrence of air leakage.

[0017] To facilitate user adjustment of airflow, the other end of the valve core 4 passes through the valve body 1 and is connected to the provided torsion cap 2. The torsion cap 2 causes the air column 7 to be inserted into or separated from the air hole 6. Therefore, the user can use the torsion cap 2 to reduce the resistance of rotating the valve core 4, so as to facilitate the user to adjust the airflow. In addition, the outer end face of the torsion cap 2 can also be provided with an indicator arrow to provide guidance on the direction of rotation, so as to facilitate the user to open or close the valve.

[0018] Specifically, when the valve core 4 is viewed from the front, the cross-section of the groove 5 is an inverted V shape, and there is only one groove 5. Therefore, the processing of the groove 5 is simple and convenient. In particular, the single groove 5 can only conduct or cut off the airflow at one point, thus making the airflow throttling ability stronger, so as to reliably control the flow rate of the airflow.

[0019] Based on the above scheme, the outer and inner walls of the silencing column 8 are provided with silencing holes 11 that are connected to each other, and the silencing holes 11 are arranged in a circumferential array on the inner and outer walls of the silencing column 8. Therefore, the direction of airflow can be changed by using the silencing holes 11 and the mounting cavity 10 to achieve the noise reduction capability of the equipment.

[0020] Specifically, since the silencing hole 11 includes a first through hole 12 and a second through hole 14, and the first through hole 12 and the second through hole 14 are connected and communicate with each other, after the airflow is released, the airflow flows outward through each through hole. By increasing the space of the through hole, the flow rate of the airflow is slowed down to reduce the noise generated by the airflow.

[0021] Furthermore, since there are multiple silencing holes 11, and these holes are connected and distributed along the height of the silencing column 8, the airflow direction can be altered by using multiple silencing holes 11. That is, when the airflow is released outward, it can be released from silencing holes 11 at different locations, thereby reducing the noise of the air source. The silencing column 8 is made of sponge, and the silencing holes 11 are machined on the sponge. The sponge absorbs sound waves, reducing noise generation. Machined silencing holes 11 on the sponge also has the advantage of simple processing.

[0022] In addition, all parts of the equipment are made of plastic, with no metal parts. This makes it easy to process and mold, and the loose molecular structure of plastic results in low acoustic impedance, which can effectively reduce the reflection and resonance of high-frequency sound waves, thus helping to reduce and lower noise.

[0023] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A noise-reducing exhaust valve, characterized in that: It includes a valve body (1), a valve core (4) that is threaded to the valve body (1), and a base (3) that is connected to the valve body (1). The base (3) is provided with an air hole (6), and the valve core (4) is also provided with an air column (7) for sealing the air hole (6), and the circumferential surface of the air column (7) is provided with a groove (5). By gradually moving the air column (7) upward, the flow rate of the air released by the groove (5) gradually increases; The base (3) is also provided with an installation cavity (10), and a sound-absorbing column (8) is installed in the installation cavity (10), and the outer wall surface of the installation cavity (10) is also provided with a groove (9).

2. The silencing exhaust valve according to claim 1, characterized in that: The air column (7) is also provided with an installation groove (13) for installing a sealing ring, and the sealing ring in the installation groove (13) is connected to the air hole (6) to seal the air hole (6).

3. The silencing exhaust valve according to claim 2, characterized in that: The other end of the valve core (4) passes through the valve body (1) and is connected to the provided twist cap (2), and the twist cap (2) causes the air column (7) to be inserted into the air hole (6) or separated from the air hole (6).

4. The silencing exhaust valve according to claim 3, characterized in that: When the valve core (4) is viewed from the front, the cross-section of the groove (5) is an inverted V shape, and the number of the groove (5) is one.

5. A silencerable exhaust valve according to any one of claims 1-4, characterized in that: The outer and inner walls of the silencing column (8) are provided with silencing holes (11) that are connected to each other, and the silencing holes (11) are arranged in a circumferential array on the inner and outer walls of the silencing column (8).

6. A noise-reducing exhaust valve according to claim 5, characterized in that: The silencing hole (11) includes a first through hole (12) and a second through hole (14), and the first through hole (12) and the second through hole (14) are connected and communicate with each other.

7. A noise-reducing exhaust valve according to claim 6, characterized in that: The number of the silencing holes (11) is multiple, and the multiple silencing holes (11) are connected and distributed along the height direction of the silencing column (8).

Images