Air valve sealing structure of compressor

Abstract

The utility model relates to a sealing structure, and provides a compressor air valve sealing structure which comprises an air cylinder sleeve, an air cylinder cover arranged on the air cylinder sleeve in a sleeving mode, a concentric valve arranged between the air cylinder sleeve and the air cylinder cover, an air inlet cavity formed in the side, close to the air cylinder sleeve, of the air cylinder cover, and an annular first sealing gasket arranged at the lower end of the concentric valve and the lower end of the air inlet cavity. The second annular sealing gasket is arranged between the concentric valve and the cylinder sleeve; the third annular sealing gasket is arranged between the cylinder sleeve and the cylinder cover; the hardness of the first sealing gasket and the second sealing gasket is greater than that of the third sealing gasket; and the third sealing gasket is thicker than the first sealing gasket and the second sealing gasket. According to the compressor air valve sealing structure, the compressor can be sealed more efficiently and stably.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, and more specifically, to a sealing structure for a compressor air valve. Background Art

[0002] An air compressor is a common industrial device that generates power by compressing air. However, there are some problems during the operation of an air compressor, and the sealing problem is one of the most prominent problems. The traditional sealing structure of a compressor usually uses a copper gasket or an O-ring for sealing, and such a sealing method has the defects of poor sealing effect and easy wear. These problems not only affect the normal operation of the air compressor but also increase the maintenance cost of the equipment;

[0003] Therefore, it is necessary to design a more reliable sealing method to solve these problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealing structure for a compressor air valve, which can seal the compressor more efficiently and stably.

[0005] The embodiment of the utility model is realized by the following technical solutions: The sealing structure for a compressor air valve of the utility model includes a cylinder sleeve, a cylinder head sleeved on the cylinder sleeve, a concentric valve arranged between the cylinder sleeve and the cylinder head, an air inlet cavity arranged on one side of the cylinder head close to the cylinder sleeve, an annular first sealing gasket arranged between the concentric valve and the lower end of the air inlet cavity, an annular second sealing gasket arranged between the concentric valve and the cylinder sleeve, and an annular third sealing gasket arranged between the cylinder sleeve and the cylinder head; the hardness of both the first sealing gasket and the second sealing gasket is greater than that of the third sealing gasket; the thickness of the third sealing gasket is greater than the thicknesses of the first sealing gasket and the second sealing gasket.

[0006] Furthermore, the materials of both the first sealing gasket and the second sealing gasket are copper, and the material of the third sealing gasket is lead.

[0007] Furthermore, the third sealing gasket includes an upper sealing gasket and a lower sealing gasket arranged oppositely, and a sealing ring arranged between the upper sealing gasket and the lower sealing gasket; arc-shaped card slots are arranged on one side of the upper sealing gasket and the lower sealing gasket close to each other, and the sealing ring is arranged in the card slots; the hardness of the sealing ring is greater than that of the upper sealing gasket and the lower sealing gasket.

[0008] Furthermore, there are a pair of the card slots, and the pair of card slots are concentrically arranged; there are a pair of the sealing rings, and the sealing rings correspond to the card slots one by one.

[0009] Further, a gap is provided between the upper sealing gasket and the lower sealing gasket.

[0010] Further, the cross-section of the clamping groove in the vertical direction is arc-shaped; in the vertical direction, the diameter of the circle where the cross-section of the clamping groove is located is greater than the diameter of the cross-section of the sealing ring.

[0011] Further, the upper sealing gasket and the lower sealing gasket are made of lead, and the sealing ring is made of copper.

[0012] Further, an annular water chamber is provided on one side of the cylinder head close to the cylinder liner; an annular connecting ring is provided at the upper end of the cylinder liner; the connecting ring is arranged in the water chamber, and sealing rings are provided on both the inner side and the outer side of the connecting ring; the sealing rings are in contact with the inner wall of the water chamber.

[0013] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: In the compressor valve sealing structure of the present invention, the first sealing gasket and the second sealing gasket are respectively used for sealing on the upper and lower sides of the concentric valve, and the third sealing gasket is used for sealing between the cylinder head and the cylinder liner. During installation, since the third sealing gasket is thicker and has a lower hardness, the cylinder head and the cylinder liner will first compress the third sealing gasket, making it deformed to seal between the cylinder head and the cylinder liner, and then continue to compress the first sealing gasket and the second sealing gasket to seal the upper and lower sides of the concentric valve. In this way, through multiple seals, better sealing of the compressor can be achieved. Description of the Drawings

[0014] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following will briefly introduce the drawings required for the embodiment. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the compressor valve sealing structure provided by the embodiment of the present invention;

[0016] Figure 2 It is a schematic structural diagram of a partially unfolded compressor valve sealing structure provided by the embodiment of the present invention;

[0017] Figure 3 It is a schematic internal structural diagram of the compressor valve sealing structure provided by the embodiment of the present invention;

[0018] Figure 4 It is a schematic structural diagram of a partially unfolded third sealing gasket provided by the embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the internal structure of the third gasket provided by the embodiment of the present invention.

[0020] Reference numerals: 11 - cylinder liner, 12 - cylinder head, 13 - concentric valve, 14 - connecting ring, 15 - intake cavity, 16 - water cavity, 21 - first gasket, 22 - second gasket, 23 - third gasket, 231 - upper gasket, 232 - lower gasket, 233 - card slot, 234 - sealing ring, 24 - sealing ring. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0025] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, if the terms "arranged", "installed", "connected", and "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment

[0027] The following will be further described in conjunction with specific embodiments. As shown in the attached Figure 1 - attached Figure 5 As shown, the compressor valve sealing structure of this embodiment includes a cylinder liner 11, a cylinder head 12 sleeved on the cylinder liner 11, a concentric valve 13 arranged between the cylinder liner 11 and the cylinder head 12, an intake cavity 15 arranged on the side of the cylinder head 12 close to the cylinder liner 11, an annular first gasket 21 arranged at the lower end of the concentric valve 13 and the intake cavity 15, an annular second gasket 22 arranged between the concentric valve 13 and the cylinder liner 11, and an annular third gasket 23 arranged between the cylinder liner 11 and the cylinder head 12; the hardness of both the first gasket 21 and the second gasket 22 is greater than that of the third gasket 23; the thickness of the third gasket 23 is greater than that of the first gasket 21 and the second gasket 22. Specifically, the first gasket 21 and the second gasket 22 are respectively used for sealing on the upper and lower sides of the concentric valve 13, and the third gasket 23 is used for sealing between the cylinder head 12 and the cylinder liner 11. During installation, since the third gasket 23 has a greater thickness and lower hardness, the cylinder head 12 and the cylinder liner 11 will first compress the third gasket 23, causing it to deform and seal between the cylinder head 12 and the cylinder liner 11, and then continue to compress the first gasket 21 and the second gasket 22 to seal the upper and lower sides of the concentric valve 13. In this way, through multiple seals, better sealing of the compressor can be achieved.

[0028] In this embodiment, the materials of both the first gasket 21 and the second gasket 22 are copper, and the material of the third gasket 23 is lead. Specifically, both copper and lead have strong plasticity and stability, and the hardness of lead is significantly lower than that of copper. Therefore, lead can be compressed first and then copper, which can better achieve sealing.

[0029] The third gasket 23 in this embodiment includes an upper gasket 231 and a lower gasket 232 which are oppositely arranged, and a sealing ring 234 disposed between the upper gasket 231 and the lower gasket 232; arc-shaped card slots 233 are provided on one side of the upper gasket 231 and the lower gasket 232 close to each other, and the sealing ring 234 is disposed in the card slots 233; the hardness of the sealing ring 234 is greater than that of the upper gasket 231 and the lower gasket 232. There are a pair of card slots 233, and the pair of card slots 233 are concentrically arranged; there are a pair of sealing rings 234, and the sealing rings 234 correspond to the card slots 233 one by one. There is a gap between the upper gasket 231 and the lower gasket 232. Specifically, when the third gasket 23 is compressed, since the hardness of the sealing ring 234 is greater than that of the upper gasket 231 and the lower gasket 232, and there is a gap between the upper gasket 231 and the lower gasket 232, the sealing ring 234 will directly squeeze the upper gasket 231 and the lower gasket 232, causing the upper gasket 231 and the lower gasket 232 to deform and achieve a sealing effect. In this way, it can avoid the upper gasket 231 and the lower gasket 232 from cracking due to excessive extrusion. There are enough gaps between the upper gasket 231 and the lower gasket 232. When deforming, the upper gasket 231 and the lower gasket 232 can deform inward, minimizing the outward expansion deformation and being able to avoid extrusion fracture as much as possible.

[0030] The cross-section of the card slot 233 in this embodiment is arc-shaped in the vertical direction; in the vertical direction, the diameter of the circle where the cross-section of the card slot 233 is located is greater than the diameter of the cross-section of the sealing ring 234. Specifically, in this way, when the upper gasket 231 and the lower gasket 232 are squeezed by the sealing ring 234, they can better wrap the sealing ring 234 and achieve a stable sealing effect.

[0031] The materials of the upper gasket 231 and the lower gasket 232 in this embodiment are lead, and the material of the sealing ring 234 is copper.

[0032] On one side of the cylinder head 12 close to the cylinder liner 11 in this embodiment, there is an annular water chamber 16, and an annular connecting ring 14 is provided at the upper end of the cylinder liner 11; the connecting ring 14 is disposed in the water chamber 16, and sealing rings 24 are provided on both the inner side and the outer side of the connecting ring 14; the sealing rings 24 are in contact with the inner wall of the water chamber 16. Specifically, the sealing ring 24 is mainly an O-ring, which is mainly used for sealing between the air chamber and the water chamber 16.

[0033] In summary, for the compressor valve sealing structure of this embodiment, the first gasket 21 and the second gasket 22 are respectively used for sealing on the upper and lower sides of the concentric valve 13, and the third gasket 23 is used for sealing between the cylinder head 12 and the cylinder liner 11. During installation, since the third gasket 23 is thicker and has a lower hardness, the cylinder head 12 and the cylinder liner 11 will first compress the third gasket 23, causing it to deform and seal between the cylinder head 12 and the cylinder liner 11, and then continue to compress the first gasket 21 and the second gasket 22 to seal the upper and lower sides of the concentric valve 13. In this way, through multiple seals, the sealing of the compressor can be better achieved.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compressor valve sealing structure, characterized in that: It includes a cylinder liner (11), a cylinder head (12) sleeved on the cylinder liner (11), a concentric valve (13) disposed between the cylinder liner (11) and the cylinder head (12), an intake cavity (15) disposed on one side of the cylinder head (12) close to the cylinder liner (11), an annular first gasket (21) disposed at the lower end of the concentric valve (13) and the intake cavity (15), an annular second gasket (22) disposed between the concentric valve (13) and the cylinder liner (11), and an annular third gasket (23) disposed between the cylinder liner (11) and the cylinder head (12). The hardness of both the first gasket (21) and the second gasket (22) is greater than that of the third gasket (23); the thickness of the third gasket (23) is greater than the thicknesses of the first gasket (21) and the second gasket (22).

2. The compressor valve sealing structure according to claim 1, characterized in that: The materials of both the first gasket (21) and the second gasket (22) are copper, and the material of the third gasket (23) is lead.

3. The compressor valve sealing structure according to claim 1, characterized in that: The third gasket (23) includes an upper gasket (231) and a lower gasket (232) disposed oppositely, and a sealing ring (234) disposed between the upper gasket (231) and the lower gasket (232); arc-shaped card slots (233) are disposed on one side of the upper gasket (231) and the lower gasket (232) close to each other, and the sealing ring (234) is disposed in the card slots (233); the hardness of the sealing ring (234) is greater than the hardnesses of the upper gasket (231) and the lower gasket (232).

4. The compressor valve sealing structure according to claim 3, characterized in that: There are a pair of the card slots (233), and the pair of card slots (233) are concentrically arranged; there are a pair of the sealing rings (234), and the sealing rings (234) correspond to the card slots (233) one by one.

5. The compressor valve sealing structure according to claim 3, characterized in that: A gap is provided between the upper gasket (231) and the lower gasket (232).

6. The compressor valve sealing structure according to claim 5, characterized in that: The cross-section of the card slot (233) in the vertical direction is arc-shaped. In the vertical direction, the diameter of the circle where the cross-section of the card slot (233) is located is greater than the diameter of the cross-section of the sealing ring (234).

7. The compressor valve sealing structure according to claim 3, characterized in that: The materials of the upper gasket (231) and the lower gasket (232) are lead, and the material of the sealing ring (234) is copper.

8. The compressor valve sealing structure according to claim 1, wherein: An annular water cavity (16) is provided on one side of the cylinder head (12) close to the cylinder liner (11), and an annular connecting ring (14) is provided at the upper end of the cylinder liner (11); the connecting ring (14) is disposed in the water cavity (16), and sealing rings (24) are provided on both the inner side and the outer side of the connecting ring (14); the sealing rings (24) are in contact with the inner wall of the water cavity (16).

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