Valve structure, air compressor exhaust structure and air compressor

Abstract

The present application provides a valve structure, an air compressor exhaust structure and an air compressor. The valve structure includes a block having an air inlet and a plurality of air outlets arranged corresponding to the air inlet, wherein the plurality of air outlets are respectively connected to the air inlet to form a plurality of air flow channels; a buffer having an elastic portion arranged corresponding to the plurality of air outlets; and a valve plate connected to the elastic portion to cover the plurality of air outlets under the drive of the elastic portion. The above-mentioned valve structure disperses the air flow by arranging a plurality of air flow channels in the block, which is beneficial to reduce the impact of the gas on the valve plate, thereby reducing the noise; at the same time, by connecting the elastic portion of the buffer with the valve plate, it is beneficial to prevent the valve plate from having excessive impact with surrounding components, thereby reducing the generation of noise; and the valve plate itself has a small mass, and its impact force on the end face of the block is much smaller than the impact force of the rubber plug on the end face of the secondary compression chamber outlet, so it is also beneficial to reduce the overall noise.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and in particular to a valve structure, an air compressor exhaust structure and an air compressor. Background Art

[0002] The reciprocating air compressor for air suspension has two compression chambers. When the high-pressure gas after secondary compression enters the drying tank, since the drying tank can be regarded as directly connected to the gas storage tank, a structure similar to a one-way valve needs to be added to the gas path to prevent the gas from flowing back from the gas storage tank. The current solution is a rubber one-way valve plug, with a spring and a spring push piece. The gas coming out of the secondary compression chamber can push open the one-way valve to flow to the drying tank, and then flow into the gas storage tank; when the air compressor is not working, the large end face of the rubber one-way valve plug fits the gas outlet of the secondary compression chamber, so it can prevent the gas from flowing back.

[0003] However, in this solution, since the gas is compressed very quickly and the one-way valve is frequently opened and closed, the large end face of the rubber one-way valve plug quickly slaps against the end face of the secondary compression chamber outlet, which is not conducive to the noise performance of the air compressor. Summary of the invention

[0004] Based on this, the present invention aims to provide an improved valve structure, an air compressor exhaust structure and an air compressor to solve at least one of the above problems.

[0005] In a first aspect, the present application provides a valve structure, comprising: a blocking block having an air inlet and a plurality of air outlets arranged corresponding to the air inlet, the plurality of air outlets being respectively connected to the air inlet to form a plurality of air flow channels; a buffer member having an elastic portion arranged corresponding to the plurality of air outlets; and a valve sheet connected to the elastic portion so as to movably cover the plurality of air outlets under the drive of the elastic portion.

[0006] The above-mentioned valve structure disperses the airflow by arranging multiple airflow channels in the block, which is beneficial to reducing the impact of gas on the valve plate, thereby reducing noise; at the same time, by connecting the elastic part of the buffer to the valve plate, it is beneficial to prevent the valve plate from excessively hitting the surrounding components, thereby reducing the generation of noise; and, the valve plate itself has a small mass, and the impact force of its hitting on the end face of the block is much smaller than the impact force of the rubber plug hitting the end face of the secondary compression chamber outlet, which is also beneficial to reducing the overall noise.

[0007] In one of the embodiments, it also includes: a fixing member, the fixing member having a limiting portion and a first connecting portion connected to the limiting portion; wherein the limiting portion is located on a side of the buffer member away from the blocking block and in contact with the buffer member, and the first connecting portion passes through the buffer member and the valve sheet and is fixedly connected to the blocking block.

[0008] In one embodiment, the buffer member is arched toward the limiting portion, and the arched portion is in contact with the limiting portion.

[0009] In one embodiment, the buffer member includes a first coupling portion and a second coupling portion arranged at different axial positions of the valve structure, and an elastic member connecting the first coupling portion and the second coupling portion, wherein the first coupling portion is in contact with the limiting portion, the elastic member and the second coupling portion together form the elastic portion, and the second coupling portion is connected to the valve plate.

[0010] In one embodiment, the elastic member includes a plurality of elastic bodies arranged around the first coupling portion, and the second coupling portion includes a plurality of connecting plates connected to the elastic bodies in a one-to-one correspondence, and the plurality of connecting plates are connected to the valve plate.

[0011] In one embodiment, the blocking block has a second connecting portion matched with the first connecting portion, and the plurality of air outlets are arranged around the second connecting portion.

[0012] In a second aspect, the present application provides an air compressor exhaust structure for controlling the exhaust of gas in a drying tank of the air compressor, comprising: a mounting groove, a bottom of which is provided with an exhaust port connected to the exhaust channel of the drying tank; and a valve structure as described in any of the preceding embodiments.

[0013] The above-mentioned air compressor exhaust structure can increase the air flow channel by setting the aforementioned valve structure, thereby reducing the impact of gas on the valve plate; at the same time, the buffer part in the valve structure can play a buffering role during the operation of the air compressor, preventing the valve plate from excessively slapping with surrounding components, and reducing the generation of noise; and, the valve plate in the valve structure itself has a small mass, and its impact force on the end face of the block is much smaller than the impact force of the rubber plug on the end face of the secondary compression chamber outlet, which is also conducive to reducing the overall noise.

[0014] In one embodiment, the blocking block is arranged in the installation groove and the air inlet of the blocking block is arranged corresponding to the exhaust port. The valve plate contacts the groove wall of the installation groove when the air compressor is not working, and is lifted up by the airflow to form a gap between the valve plate and the installation groove when the air compressor is working.

[0015] In one embodiment, the mounting groove includes an inclined first groove wall arranged at its open end and a second groove wall connected to the first groove wall. When the air compressor is not working, the surface of the valve plate close to the block contacts the second groove wall. When the air compressor is working, the valve plate is lifted by the airflow so that the surface of the valve plate close to the block is separated from the second groove wall and a gap is formed between the valve plate and the first groove wall.

[0016] In a third aspect, the present application provides an air compressor, comprising an air compressor exhaust structure as described in any of the foregoing embodiments.

[0017] The above-mentioned air compressor, by providing the above-mentioned air compressor exhaust structure, is conducive to optimizing the noise of the air path structure from its secondary compression chamber to the drying tank, thereby improving the noise performance of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of this specification or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 An exploded schematic diagram of a valve structure according to an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the installation of a valve structure according to an embodiment of the present application;

[0021] Figure 3 The schematic diagram of gas flow when the air compressor is not working is shown;

[0022] Figure 4 The figure shows a schematic diagram of gas flow when the air compressor is working.

[0023] Component number description:

[0024] 10. valve structure, 110. blocking block, 111. air outlet, 112. air inlet, 113. air flow channel, 114. second connecting portion, 120. valve plate, 130. buffer member, 131. elastic member, 132. first coupling portion, 1311. second coupling portion, 1312. elastic member, 140. fixing member, 141. limiting portion, 142. first connecting portion;

[0025] 20. Air compressor exhaust structure, 210. Mounting groove, 211. First groove wall, 212. Second groove wall, 213. Exhaust port;

[0026] AX, axis line. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] In the traditional air compressor exhaust structure, the end face of the rubber one-way valve plug fits against the end face of the secondary compression chamber outlet, and the plug itself has a certain weight. When the one-way valve opens and closes at high speed, the impact between the end face of the plug and the end face of the outlet will cause great noise, affecting the overall noise performance of the air compressor.

[0032] Based on the above problems, an embodiment of the present application provides a valve structure, which disperses the airflow by setting multiple airflow channels in the block, which is beneficial to reducing the impact of gas on the valve plate, thereby reducing noise; at the same time, by connecting the elastic part of the buffer to the valve plate, it is beneficial to prevent the valve plate from excessively hitting the surrounding components, thereby reducing the generation of noise; and, the valve plate itself has a small mass, and the impact force of its hitting on the end face of the block is much smaller than the impact force of the rubber plug on the end face of the secondary compression chamber outlet, which is also beneficial to reducing the overall noise.

[0033] In some embodiments, Figure 1 and Figure 2 As shown, the valve structure 10 includes: a blocking block 110, having an air inlet 112 and a plurality of air outlets 111 arranged corresponding to the air inlet 112, and the plurality of air outlets 111 are respectively connected to the air inlet 112 to form a plurality of air flow channels 113; a buffer member 130, having an elastic portion 131 arranged corresponding to the plurality of air outlets 111; and a valve plate 120, connected to the elastic portion 131, so as to movably cover the plurality of air outlets under the drive of the elastic portion 131.

[0034] For example, the plurality of gas outlets 111 may be distributed in a rotational manner around the axis AX of the valve structure 10, wherein the plurality of gas flow channels 113 may be independent of each other or may intersect at a certain position between the gas inlet 112 and the gas outlet 111. In this way, the gas flowing into the gas inlet 112 may be divided into multiple paths, thereby reducing the impact of the gas on the valve plate 120.

[0035] Exemplarily, "active covering" means that the valve plate 120 has at least two states, one state is in contact with the block 110 and covers the gas outlet 111, and the other state is that the valve plate 120 is away from the block 110 so as to open the gas outlet 111 so that the gas can flow out of the gas outlet 111 and bypass the valve plate 120 to continue to flow. Optionally, the elastic part 131 is configured to be able to deform at least in a direction parallel to the axis AX to drive the valve plate 120 to switch between the above at least two states. In this way, the impact stroke of the valve plate 120 can be absorbed by the buffer 130, thereby reducing the number of slaps between the valve plate 120 and surrounding components, thereby reducing the generation of noise.

[0036] In some embodiments of the present application, Figure 2As shown, the valve structure 10 further includes: a fixing member 140, the fixing member 140 having a limiting portion 141 and a first connecting portion 142 connected to the limiting portion 141; wherein the limiting portion 141 is located at a side of the buffer member 130 away from the block 110 and in contact with the buffer member 130, and the first connecting portion 142 passes through the buffer member 130 and the valve plate 120 and is fixedly connected to the block 110. Optionally, the fixing member 140 may be a pan head screw, the threaded rod of which may pass through the through holes on the buffer member 130 and the valve plate 120 and be threadedly connected to the block 110, and the head of the fixing member 140 may limit the position of the buffer member 130, so that when the valve plate 120 is lifted by the high pressure gas when the air compressor is working, the elastic portion 131 may be compressed and provide a restoring force for the valve plate 120, so that the valve plate 120 is reset when the air compressor is not working and covers the plurality of gas outlets 111 again.

[0037] In some embodiments of the present application, the buffer 130 is arched toward the limiting portion 141, and the arched portion is in contact with the limiting portion 141. Such a configuration can achieve the following beneficial effects: (1) Enhanced elastic deformation capacity. Specifically, the arched structure is similar to a "preload spring". When under pressure, it can provide a larger deformation space and increase the buffer stroke. In addition, the arched portion can bend and deform preferentially, thereby avoiding premature fatigue of the edge claw; (2) Optimized stress distribution, reduced local stress concentration, reduced fracture risk, and uniform stress distribution can delay material fatigue and extend service life; (3) Improved stability and guidance. The arch can be used as a force center to guide the load to be transmitted along the symmetry axis to prevent lateral deviation; (4) Preload adjustment function. The arch height can adjust the initial preload force to meet different load requirements; (5) Optimized energy storage efficiency. The arch deforms more evenly when under pressure, and the elastic potential energy storage is more efficient, with lower rebound energy loss. Optionally, the buffer member 130 includes a first coupling portion 132 and a second coupling portion 1311 disposed at different axial positions of the valve structure 10, and an elastic member 1312 connecting the first coupling portion 132 and the second coupling portion 1311, wherein the first coupling portion 132 contacts the limiting portion 141, the elastic member 1312 and the second coupling portion 1311 together form the elastic portion 131, and the second coupling portion 1311 is connected to the valve plate 120. Optionally, the fixing member 140 can be formed as a thin sheet structure, so as to meet the installation requirements of a compact space.

[0038] Furthermore, the elastic member 1312 includes a plurality of elastic bodies arranged around the first coupling portion 132, and the second coupling portion 1311 includes a plurality of connecting plates connected to the elastic bodies in a one-to-one correspondence, and the plurality of connecting plates are connected to the valve plate 120. By setting a plurality of groups of elastic bodies and connecting plates connected in a one-to-one correspondence, the force can be dispersed to a plurality of fulcrums, providing multi-point support and anti-torsion capabilities, avoiding stress concentration, and forming a graded buffer mechanism with the arched area. At the same time, multi-point contact is also conducive to reducing high-frequency vibration transmission and enhancing installation stability. Optionally, the buffer member 130 can be a three-claw spring sheet. By setting the three-claw spring sheet, it can play a buffering role during the operation of the air compressor, preventing the valve plate 120 from having excessive slaps with the end face of the block 110 and the lower surface of the screw pan head, thereby reducing the generation of noise.

[0039] In some embodiments of the present application, the block 110 has a second connection portion 114 matched with the first connection portion 142, and a plurality of air outlets 111 are arranged around the second connection portion 114. This is conducive to forming a plurality of air flow channels 113 arranged around the second connection portion 114, so that the air flow impact on the valve plate 120 is more uniform, and the force on the buffer 130 is also more uniform.

[0040] The embodiment of the present application also provides an air compressor exhaust structure 20 for controlling the exhaust of gas in the drying tank of the air compressor. By setting the valve structure 10 described in any of the above embodiments, the air compressor exhaust structure 20 of the embodiment of the present application can increase the air flow channel, thereby reducing the impact of gas on the valve plate 120; at the same time, the buffer member 130 in the valve structure 10 can play a buffering role during the operation of the air compressor, preventing the valve plate 120 from having excessive impact with surrounding components, and reducing the generation of noise; and, the valve plate 120 in the valve structure 10 itself has a relatively small mass, and the impact force of the valve plate 120 hitting the end face of the block 110 is much smaller than the impact force of the rubber plug hitting the end face of the secondary compression chamber outlet, so it is also conducive to reducing the overall noise. In addition, setting the valve structure 10 in the mounting groove 210 is also conducive to reducing the installation height of the valve structure 10 and saving space.

[0041] In some embodiments, Figure 2 As shown, the air compressor exhaust structure 20 includes: a mounting groove 210, a groove bottom of the mounting groove 210 is provided with an exhaust port 213 connected to the exhaust channel of the drying tank; and a valve structure 10 as described in any of the above embodiments.

[0042] Optional, such as Figures 2 to 4 As shown, the block 110 is arranged in the installation groove 210 and the air inlet 112 and the air outlet 213 of the block are arranged correspondingly. The valve plate 120 contacts the groove wall of the installation groove 210 when the air compressor is not working, and is lifted up by the air flow to form a gap between the valve plate 120 and the installation groove when the air compressor is working. Figure 3 and Figure 4As shown, the arrow indicates the direction of air flow. When the air compressor is not working, one end of the valve plate 120 contacts the groove wall of the installation groove 210, and the side of the valve plate 120 close to the block 110 contacts the block 110 and covers the air outlets 111 of the block 110, so that the gas in the drying tank will not flow out; when the air compressor is working, the high-pressure gas in the drying tank flows to the surface of the valve plate 120 after passing through the exhaust port 213, the air inlet 112, and the air flow channel 113, so that the valve plate 120 is lifted up, and flows out from the gap between the valve plate 120 and the installation groove 210 and finally enters the gas storage tank.

[0043] Optional, such as Figure 3 and Figure 4 As shown, the mounting groove 210 includes an inclined first groove wall 211 arranged at its open end and a second groove wall 212 connected to the first groove wall 211. When the air compressor is not working, the surface of the valve plate 120 close to the block 110 contacts the second groove wall 212. When the air compressor is working, the valve plate 120 is lifted by the airflow so that the surface of the valve plate 120 close to the block 110 is separated from the second groove wall 212 and a gap is formed between the valve plate 120 and the first groove wall 211. In this way, the valve plate 120 can be limited by the groove wall of the mounting groove 210 when the air compressor is not working, and when the air compressor is working, the valve plate 120 only needs to be pushed away from the second groove wall 212 to form a gap between the valve plate 120 and the mounting groove 210, thereby reducing the working stroke of the valve plate 120 and further reducing the height of the valve structure 10 protruding from the mounting groove 210.

[0044] An embodiment of the present application also provides an air compressor, comprising an air compressor exhaust structure as described in any of the above embodiments.

[0045] The above-mentioned air compressor, by providing the above-mentioned air compressor exhaust structure, is conducive to optimizing the noise of the air path structure from its secondary compression chamber to the drying tank, thereby improving the noise performance of the air compressor.

[0046] It should be noted that the numbers representing quantities or properties used to describe and claim certain embodiments of the present application should be understood to be modified by the terms "roughly", "about", "approximately" or "substantially" in some cases. For example, unless otherwise specified, "roughly", "about", "approximately" or "substantially" can indicate a ±20% variation of the value described. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A valve structure, characterized in that: include: A block having an air inlet and a plurality of air outlets arranged corresponding to the air inlet, wherein the plurality of air outlets are respectively connected to the air inlet to form a plurality of air flow channels; A buffer member having elastic parts arranged corresponding to the plurality of air outlets; as well as, A valve sheet connected to the elastic part to movably cover the plurality of air outlets under the drive of the elastic part; The valve structure further comprises a fixing member, the fixing member comprising a limiting portion and a first connecting portion connected to the limiting portion; wherein the limiting portion is located at a side of the buffer member away from the blocking block and in contact with the buffer member, and the first connecting portion passes through the buffer member and the valve sheet and is fixedly connected to the blocking block; Furthermore, the buffer member is arched toward the limiting portion, and the arched portion is in contact with the limiting portion, the buffer member comprises a first coupling portion and a second coupling portion provided at different axial positions of the valve structure, and an elastic member connecting the first coupling portion and the second coupling portion, wherein the first coupling portion is in contact with the limiting portion, the elastic member and the second coupling portion jointly form the elastic portion, and the second coupling portion is connected to the valve plate; The elastic member includes a plurality of elastic bodies arranged around the first coupling portion, the second coupling portion includes a plurality of connecting sheets connected to the elastic bodies in a one-to-one correspondence, and the plurality of connecting sheets are connected to the valve sheet; The blocking block has a second connecting portion matched with the first connecting portion, and the plurality of air outlets are arranged around the second connecting portion.

2. An air compressor exhaust structure, used to control the exhaust of gas in the drying tank of the air compressor, characterized in that: include: A mounting groove, wherein the bottom of the mounting groove is provided with an exhaust port connected to the exhaust channel of the drying tank; And, the valve structure as claimed in claim 1.

3. The air compressor exhaust structure according to claim 2, characterized in that: The blocking block is arranged in the installation groove and the air inlet of the blocking block is arranged corresponding to the exhaust port. The valve plate contacts the groove wall of the installation groove when the air compressor is not working, and is lifted up by the airflow to form a gap between the valve plate and the installation groove when the air compressor is working.

4. The air compressor exhaust structure according to claim 3, characterized in that: The mounting groove includes an inclined first groove wall arranged at its open end and a second groove wall connected to the first groove wall. When the air compressor is not working, the surface of the valve plate close to the block contacts the second groove wall. When the air compressor is working, the valve plate is lifted by the airflow so that the surface of the valve plate close to the block is separated from the second groove wall and a gap is formed between the valve plate and the first groove wall.

5. An air compressor, characterized in that: It comprises the air compressor exhaust structure as claimed in any one of claims 2 to 4.

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