Valve plate assembly with noise reduction function and air compressor

Abstract

The utility model discloses a valve plate subassembly and air compressor with noise reduction function, wherein the valve plate subassembly includes valve plate body, valve piece and pressboard, three are connected together through guide screw, be equipped with the air outlet hole on valve plate body, and the valve piece movable resistance pressure is in the opening of air outlet hole, and is equipped with the through -hole matched with air outlet hole. The one side of valve plate body towards valve piece is attached with flexible buffer layer, and the buffer layer adopts the fluorine rubber material of moderate hardness, and is firmly bonded on the valve plate body surface through vulcanization process. This design has reduced the noise when air compressor operation, has improved the sealing performance, has prolonged the service life of part. Air compressor drives eccentric wheel rotation through motor, drives piston connecting rod assembly to reciprocate in the cylinder, realizes the compression and discharge of air. The flexible buffer layer of valve plate subassembly plays the buffering effect when the valve piece closes air outlet hole, reduces the impact force and noise, ensures the efficient discharge of compressed air simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of air compressor equipment technology, specifically to a valve plate assembly with noise reduction function and an air compressor. Background Technology

[0002] An air compressor, also known as an air compressor, is a device used to compress gas. Among them, the reciprocating piston air compressor is the most common type. The principle of a reciprocating piston air compressor is that a motor drives a rotating shaft to rotate, which drives an eccentric wheel. A piston-connecting rod assembly is installed on the eccentric wheel, driving the piston to reciprocate in a closed space, generating pressure changes. This closed space consists of a cylinder and a valve plate. Gas enters from the piston and exits from the valve plate, ultimately producing high-pressure air.

[0003] During operation, the valve plate frequently opens and closes as it reciprocates with the piston-connecting rod assembly. Specifically, the valve plate is open when the piston-connecting rod assembly compresses and closed when it draws in air. Since the valve plate's opening and closing is synchronized with the piston's reciprocating motion, one revolution of the motor corresponds to one piston revolution and one valve plate opening / closing action. The high speed of the motor results in frequent valve plate opening and closing, leading to significant noise generated when the valve plate collides with the valve plate.

[0004] In order to effectively reduce the noise generated by the air compressor during use, this utility model proposes a valve plate assembly and an air compressor with noise reduction function. Utility Model Content

[0005] The purpose of this utility model is to provide a valve plate assembly with noise reduction function to solve the technical problems existing in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a valve plate assembly with noise reduction function, the valve plate assembly including a valve plate body, a valve plate and a pressure plate installed sequentially from bottom to top, the valve plate and the pressure plate being connected together to the center of the valve plate body by guide screws, the valve plate body having an air outlet hole, the valve plate being movable against the opening of the air outlet hole, the valve plate having a through hole matching the air outlet hole, and a flexible buffer layer being attached to the side of the valve plate body facing the valve plate.

[0007] Preferably, the flexible buffer layer is made of fluororubber material.

[0008] Preferably, the flexible buffer layer is made of fluororubber material with a hardness of 60.

[0009] Preferably, the flexible buffer layer is bonded to the surface of the valve plate body by a vulcanization process.

[0010] Another embodiment of this utility model proposes an air compressor, including the valve plate assembly described above, and further including an eccentric wheel, a piston connecting rod assembly, a cylinder, a top cylinder head, and an exhaust port. The piston connecting rod assembly is mounted on the eccentric wheel, and the eccentric wheel is driven to rotate by a motor, thereby driving the piston connecting rod assembly to reciprocate up and down in the cylinder. The top cylinder head is mounted on the top of the cylinder, and the valve plate assembly is located at the junction of the top cylinder head and the cylinder. The exhaust port is provided on the outward-facing side of the top cylinder head.

[0011] Preferably, the piston connecting rod assembly includes a piston head and a connecting rod. One end of the connecting rod is mounted on the eccentric wheel, and the other end is connected to the piston head through a piston pin. The piston head is provided with an air intake hole, and a compression chamber is provided between the piston head and the valve plate assembly.

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

[0013] The valve plate assembly of this invention significantly reduces the noise of the air compressor during operation by setting a flexible buffer layer between the valve plate body and the valve disc. The flexible buffer layer is made of fluororubber material with moderate hardness and is firmly bonded to the surface of the valve plate body through a vulcanization process. This design not only effectively absorbs the impact force generated when the valve disc closes the air outlet, reducing mechanical vibration, but also provides a stronger, more durable, and more temperature-resistant bond compared to ordinary glue. It also extends the service life of the valve disc and the valve plate body. In addition, the use of the flexible buffer layer further improves the sealing performance of the valve plate assembly, reduces gas leakage, and improves the operating efficiency of the air compressor.

[0014] Compared to conventional valve plate assemblies that rely on direct metal-to-metal impact, this invention uses a flexible material in the middle as a buffer, resulting in significantly lower noise levels. Furthermore, the overall design of the air compressor, through the rational arrangement of components such as the eccentric wheel, piston connecting rod assembly, cylinder, cylinder head, and exhaust port, achieves a highly efficient and stable air compression process. This design not only improves the performance of the air compressor but also reduces energy consumption and enhances equipment reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural sectional view of the air compressor of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the disassembled structure of the central valve plate assembly;

[0018] Figure 3 Top view of the valve plate body after the flexible buffer layer has been assembled;

[0019] Figure 4 for Figure 3 The front view;

[0020] Figure 5 for Figure 4 A magnified structural diagram of section I.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1-Cylinder, 2-Connecting rod, 3-Piston head, 4-Valve plate assembly, 41-Valve plate body, 411-Flexible buffer layer, 42-Valve plate, 43-Pressure plate, 44-Guide screw, 5-Top cylinder head, 6-Exhaust port, 7-Compression chamber. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] Please see Figure 2-5 This utility model provides a technical solution: a valve plate assembly with noise reduction function. The valve plate assembly 4 includes a valve plate body 41, a valve plate 42, and a pressure plate 43 installed sequentially from bottom to top. The valve plate 42 and the pressure plate 43 are connected to the center of the valve plate body 41 by guide screws 44. The valve plate body 41 has an air outlet. The valve plate 42 is movably pressed against the opening of the air outlet. The valve plate 42 has a through hole matching the air outlet. A flexible buffer layer 411 is attached to the side of the valve plate body 41 facing the valve plate 42. Specifically, the flexible buffer layer 411 is made of fluororubber material, wherein the optimal choice of fluororubber material is fluororubber material with a hardness of 60. In specific assembly, the flexible buffer layer 411 is bonded to the surface of the valve plate body 41 by a vulcanization process. It should be noted that the vulcanization process is to bond the flexible buffer layer 41 to the surface of the valve plate body 41. Vulcanization treatment cannot be performed inside the holes of the valve plate body 41. See details. Figure 3 That is, the black shaded area is vulcanized and bonded with fluororubber with a hardness of 60.

[0025] See details Figure 1This embodiment also provides an air compressor, which includes the valve plate assembly 4 mentioned above, and further includes an eccentric wheel, a piston connecting rod assembly, a cylinder 1, a top cylinder head 5, and an exhaust port 6. The piston connecting rod assembly is mounted on the eccentric wheel. The eccentric wheel is driven to rotate by a motor, thereby driving the piston connecting rod assembly to reciprocate up and down in the cylinder 1. The top cylinder head 5 is mounted on the top of the cylinder 1. The valve plate assembly 4 is located at the junction of the top cylinder head 5 and the cylinder 1. The exhaust port 6 is provided on the outward side of the top cylinder head 5. Specifically, the piston connecting rod assembly includes a piston head 3 and a connecting rod 2. One end of the connecting rod 2 is mounted on the eccentric wheel, and the other end is connected to the piston head 3 through a piston pin. The piston head 3 is provided with an air intake hole. A compression chamber 7 is provided between the piston head 3 and the valve plate assembly 4.

[0026] See details Figure 1 The principle of a reciprocating piston air compressor is that the motor drives the shaft to rotate, which drives the eccentric wheel. The eccentric wheel is equipped with a piston connecting rod assembly, which drives the piston to reciprocate in a closed space, generating pressure changes. The closed space described here consists of cylinder 1 and valve plate assembly 4. Gas enters from piston head 3, passes through compression chamber 7, and then exits from valve plate assembly 4, ultimately producing high-pressure air.

[0027] The principle of gas compression is as follows: the piston head 3 reciprocates. When the piston head 3 moves upward, the gas in the compression chamber 7 is compressed. When the gas pressure in the chamber is compressed to a level greater than the pressure outside the valve plate assembly 4, the valve plate assembly 4 is subjected to a pressure difference, thereby opening the valve plate 42 to exhaust gas.

[0028] When the piston head 3 moves downward, the compression chamber 7 draws in air, and the gas enters the chamber from the piston head 3. When the pressure inside the chamber is less than the pressure outside the valve plate 42, the valve plate 42 closes due to the pressure difference between the inside and outside, preventing the discharged gas from flowing back.

[0029] When the motor rotates once, the eccentric wheel also rotates once, driving the piston connecting rod assembly to reciprocate once. At this time, the valve plate 42 also opens and closes once.

[0030] Since the valve plate body 41 serves as both a sealing chamber and an automatic exhaust structure, its material requires high hardness and is generally made of metal.

[0031] Since both the valve plate 42 and the valve plate body 41 require a certain degree of hardness, and considering cost and other issues, the most effective method is to attach a layer of flexible material to the valve plate body 41. This material must act as a buffer to isolate the direct action between the two metal parts, thereby reducing the noise caused by the collision between the valve plate 42 and the valve plate body 41, and further reducing the overall noise of the air compressor. Due to the high-frequency opening and closing of the valve plate 42, the flexible material also needs a certain degree of hardness. After multiple performance tests, it was finally determined that fluororubber is the optimal material for the flexible material, with a hardness of 60.

[0032] In addition, considering the two different ways of bonding materials, an effective method was needed. Ultimately, it was decided to use a vulcanization process for bonding, which can effectively prevent the fluororubber from sliding and blocking the vent after being hit for a long time.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A valve plate assembly with noise reduction function, characterized in that: The valve plate assembly (4) includes a valve plate body (41), a valve plate (42), and a pressure plate (43) installed sequentially from bottom to top. The valve plate (42) and the pressure plate (43) are connected together to the center of the valve plate body (41) by guide screws (44). The valve plate body (41) is provided with an air outlet. The valve plate (42) is movable and presses against the opening of the air outlet. The valve plate (42) is provided with a through hole that matches the air outlet. A flexible buffer layer (411) is attached to the side of the valve plate body (41) facing the valve plate (42).

2. A valve plate assembly with noise reduction function according to claim 1, characterized in that: The flexible buffer layer (411) is made of fluororubber material.

3. A valve plate assembly with noise reduction function according to claim 2, characterized in that: The flexible buffer layer (411) is made of fluororubber material with a hardness of 60.

4. A valve plate assembly with noise reduction function according to claim 3, characterized in that: The flexible buffer layer (411) is bonded to the surface of the valve plate body (41) by a vulcanization process.

5. An air compressor, characterized in that: The air compressor includes a valve plate assembly (4) as described in any one of claims 1 to 4, and further includes an eccentric wheel, a piston connecting rod assembly, a cylinder (1), a top cylinder head (5), and an exhaust port (6). The piston connecting rod assembly is mounted on the eccentric wheel. The eccentric wheel is driven to rotate by a motor, thereby driving the piston connecting rod assembly to reciprocate up and down in the cylinder (1). The top cylinder head (5) is mounted on the top of the cylinder (1). The valve plate assembly (4) is located at the junction of the top cylinder head (5) and the cylinder (1). The exhaust port (6) is provided on the outward side of the top cylinder head (5).

6. An air compressor according to claim 5, characterized in that: The piston connecting rod assembly includes a piston head (3) and a connecting rod (2). One end of the connecting rod (2) is mounted on the eccentric wheel, and the other end is connected to the piston head (3) through a piston pin. The piston head (3) is provided with an air intake hole, and a compression chamber (7) is provided between the piston head (3) and the valve plate assembly (4).

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