Air valve and compressor

Abstract

The utility model belongs to the technical field of compressors, and discloses an air valve and a compressor, the air valve comprises a lift limiter, a valve plate and a static disc, and the lift limiter comprises a first striking part and a first mounting part which are connected with each other; the valve plate comprises a second striking part and a second mounting part which are connected with each other, a buffer layer is arranged on the side, facing the second striking part, of the first striking part, and / or a buffer layer is arranged on the side, facing the first striking part, of the second striking part; an exhaust hole is formed in the static disc, the first mounting part and the second mounting part are both connected with the static disc, a gap is reserved between the first striking part and the static disc, the first striking part is right opposite to the exhaust hole, and the second striking part is movably arranged at the gap in the axial direction of the exhaust hole. When the pressure of gas exhausted from the exhaust hole is large, the second striking part moves in the direction towards the first striking part and strikes the first striking part, and the buffer layer can buffer the impact force between the first striking part and the second striking part, so that the effect of reducing the impact sound between the valve plate and the lift limiter is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field especially relates to a valve and compressor. BACKGROUND

[0002] Lift limiter is the component of compressor valve used to limit or control the lift height (lift) of valve plate, mainly used to limit the opening height of valve plate in the appropriate specified range, and some lift limiters also play the role of guiding. The material used in lift limiter is generally the same as or one level lower than the material of valve seat.

[0003] In the prior art, when the compressor is running, high-pressure gas is discharged from the static disc exhaust port, and the exhaust valve plate is opened. When the pressure is too large, the exhaust valve plate will hit the lift limiter with a relatively large force, and the collision sound is relatively harsh, which makes sensitive users feel uncomfortable.

[0004] Therefore, it is urgent to provide a valve and compressor to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a valve to achieve the effect of noise reduction.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A valve, comprising:

[0008] A lift limiter, the lift limiter comprising a first hitting part and a first mounting part connected;

[0009] A valve plate, the valve plate comprising a second hitting part and a second mounting part connected, the first hitting part being provided with a rubber layer on the side facing the second hitting part, and / or the second hitting part being provided with a rubber layer on the side facing the first hitting part;

[0010] A static disc, the static disc being provided with an exhaust hole, the first mounting part and the second mounting part being connected with the static disc, a gap being left between the first hitting part and the static disc, the first hitting part being provided opposite to the exhaust hole, and the second hitting part being movably arranged at the gap along the axial direction of the exhaust hole.

[0011] As a preferred, the first hitting part is inclined in the direction away from the second hitting part from the side connected with the first mounting part to the side away from the first mounting part.

[0012] As a preferred, the lift limiter further comprises a connecting part, the first mounting part being connected with the first hitting part through the connecting part.

[0013] As a preferred, the connecting part is inclined from the side connected with the first mounting part to the side away from the first mounting part in the direction away from the second hitting part, and the inclination of the connecting part is different from the inclination of the first hitting part.

[0014] As a preferred, the inclination of the connecting part is smaller than the inclination of the first hitting part.

[0015] As a preferred, the lift limiter is a carbon steel element.

[0016] As a preferred, a rubber layer is arranged on the side of the first hitting part facing the second hitting part, the rubber layer is plated on the side of the first hitting part facing the second hitting part, or the rubber layer is fixedly attached to the first hitting part.

[0017] As a preferred, the rubber layer covers the whole surface of the side of the first hitting part facing the second hitting part.

[0018] As a preferred, a first connecting hole is arranged on the first mounting part, a second connecting hole is arranged on the second mounting part, and a bolt is arranged in the first connecting hole and the second connecting hole and is threadedly connected with the static disc.

[0019] Another purpose of the utility model is to provide a compressor to achieve the effect of noise reduction.

[0020] A compressor comprises a shell and the above-mentioned air valve, the shell is provided with two air cavities, the static disc is arranged in the shell, and the two air cavities are communicated through an exhaust hole.

[0021] The utility model has the advantages of:

[0022] The utility model provides a kind of air valve and compressor, air valve includes lift limiter, valve piece and static disc, lift limiter includes the first hitting part and first mounting part connected;Valve piece includes the second hitting part and second mounting part connected, first hitting part side towards second hitting part is provided with rubber layer, and / or, second hitting part side towards first hitting part is provided with rubber layer;Static disc is provided with exhaust hole, first mounting part and second mounting part are connected with static disc, and gap is left between first hitting part and static disc, and first hitting part is provided to exhaust hole, and second hitting part is movably arranged at gap along the axial direction of exhaust hole.It is connected with static disc by first mounting part and second mounting part, the installation of lift limiter and static disc and the installation of valve piece and static disc are realized.When the gas pressure discharged from exhaust hole is larger, second hitting part moves in the direction towards first hitting part and impacts on rubber layer, and rubber layer can buffer the impact force between first hitting part and second hitting part, to achieve the effect of reducing the impact sound between valve piece and lift limiter. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the air valve structure schematic view provided by the utility model.

[0024] Fig. 2 is a lift limiter structure schematic diagram provided by the utility model.

[0025] In the drawing:

[0026] 1, lift limiter;11, first knock part;12, first installation part;13, rubber layer;14, connecting part;2, valve piece;21, second knock part;22, second installation part;3, static disc;31, exhaust hole;32, bolt. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0028] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the embodiment, the terms "up", "down", "right", etc. The orientation or position relationship shown in the drawing is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0031] The purpose of this embodiment is to provide an air valve to achieve the effect of noise reduction.

[0032] Specifically, such as Figs. 1-2 As shown, the air valve includes a lift limiter 1, a valve plate 2, and a stationary disc 3. The lift limiter 1 includes a first striking part 11 and a first mounting part 12 connected together. The valve plate 2 includes a second striking part 21 and a second mounting part 22 connected together. A rubber layer 13 is provided on the side of the first striking part 11 facing the second striking part 21. An exhaust hole 31 is provided on the stationary disc 3. Both the first mounting part 12 and the second mounting part 22 are connected to the stationary disc 3. A gap is left between the first striking part 11 and the stationary disc 3, and the first striking part 11 is positioned directly opposite the exhaust hole 31. The second striking part 21 is movably disposed at the gap along the axial direction of the exhaust hole 31, and the second striking part 21 can impact the rubber layer 13. By connecting the first mounting part 12 and the second mounting part 22 to the stationary disc 3, the lift limiter 1 and the stationary disc 3, as well as the valve plate 2 and the stationary disc 3, are installed. When the gas pressure discharged from the exhaust port 31 is high, the second striking part 21 moves in the direction toward the first striking part 11 and impacts the rubber layer 13. The rubber layer 13 can buffer the impact force between the first striking part 11 and the second striking part 21, reducing the knocking force of the second striking part 21, thereby reducing the impact sound between the valve plate 2 and the lift limiter 1, and extending the service life of the valve plate 2. In this embodiment, the gas valve is installed in the exhaust passage of the compressor. In other embodiments, the gas valve can also be installed in the intake passage of the compressor or on the pipeline of the gas flow system. In another embodiment, a buffer layer 13 can also be provided on the side of the second striking part 21 facing the first striking part 11. In yet another embodiment, a buffer layer 13 is provided on the side of the first striking part 11 facing the second striking part 21, and simultaneously, a buffer layer 13 is provided on the side of the second striking part 21 facing the first striking part 11.

[0033] Furthermore, such as Fig. 2 As shown, the first striking part 11 is inclined from the side connected to the first mounting part 12 to the side away from the first mounting part 12 in a direction opposite to the second striking part 21, thereby forming a gap between the first striking part 11 and the stationary disc 3. Furthermore, when the second striking part 21 impacts the rubber layer 13, the inclined first striking part 11 allows a slit to be formed between the side of the rubber layer 13 away from the first mounting part 12 and the second striking part 21. External gas fills this slit, thus preventing the second striking part 21 from adhering to the rubber layer 13. In practical applications, the first striking part 11 can be set to different inclination angles according to the magnitude of the gas impact pressure that the valve plate 2 can withstand under extreme operating conditions.

[0034] Further, the lift limiter 1 further comprises a connecting portion 14, the first mounting portion 12 is connected with the first hitting portion 11 through the connecting portion 14, so that the first hitting portion 11 and the first mounting portion 12 are fixedly connected, and the lift limiter 1 can be arranged on the gas valve as a whole.

[0035] Further, as shown in the figure, Figs. 1-2 the connecting portion 14 is inclined from the side connected with the first mounting portion 12 to the side away from the first mounting portion 12 in the direction away from the second hitting portion 21, and the inclination of the connecting portion 14 is different from the inclination of the first hitting portion 11, which has good noise reduction and anti-absorption effect. In this embodiment, the inclination of the connecting portion 14 is smaller than the inclination of the first hitting portion 11, so that the overall structural consistency of the lift limiter 1 is good. Secondly, the design of the connecting portion 14 enlarges the gap between the first hitting portion 11 and the static disc 3, which can further increase the gap between the side of the rubber layer 13 away from the first mounting portion 12 and the second hitting portion 21 when the second hitting portion 21 hits the rubber layer 13, which has the effect of further preventing the second hitting portion 21 from being absorbed by the rubber layer 13 after hitting the rubber layer 13. Thirdly, during the movement of the second hitting portion 21 towards the first hitting portion 11, the moving speed will gradually decrease, therefore, enlarging the gap between the first hitting portion 11 and the static disc 3 can reduce the speed when the second hitting portion 21 hits the rubber layer 13, which further reduces the impact force of the second hitting portion 21 hitting the rubber layer 13, and has the effect of further reducing the noise.

[0036] In other embodiments, the inclination angle of the connecting portion 14 is greater than the inclination angle of the first hitting portion 11, when the second hitting portion 21 hits the rubber layer 13, a gap is left between the connecting portion 14 and the valve plate 2, and the external gas fills in the gap, which can prevent the second hitting portion 21 from being absorbed by the rubber layer 13, so that the lift limiter 1 has good anti-absorption effect.

[0037] Optionally, the lift limiter 1 is a carbon steel element, so that the lift limiter 1 has good strength, hardness and rigidity as a whole.

[0038] Optionally, as shown in the figure, Figs. 1-2As shown, a rubber layer 13 is provided on the side of the first striking part 11 facing the second striking part 21. The rubber layer 13 is plated on the side of the first striking part 11 facing the second striking part 21. Placing the rubber on the first striking part 11 achieves a stable connection between the rubber layer 13 and the first striking part 11, thereby ensuring that the lift limiter 1 maintains a stable noise reduction effect. In this embodiment, the rubber is uniformly plated on the surface of the first striking part 11 facing the second striking part 21 by vulcanization casting to form the rubber layer 13. In another embodiment, the rubber can also be fixed to the surface of the first striking part 11 by rubber coating, rubber impregnation, or hot pressing to form the rubber layer 13. It should be noted that the specific methods of vulcanization casting, rubber coating, rubber impregnation, and hot pressing are all prior art in the art and will not be described in detail here. In yet another embodiment, the rubber layer 13 can also be connected to the first striking part 11 by adhesive bonding.

[0039] Optionally, the rubber layer 13 covers the entire surface of the first striking part 11 facing the second striking part 21, maximizing the coverage area of ​​the rubber layer 13 to make the connection between the rubber layer 13 and the first striking part 11 more stable, thereby making the noise reduction effect of the lift limiter 1 more stable. In addition, in this embodiment, the rubber layer 13 is only provided on the surface of the first striking part 11 facing the second striking part 21, while the rubber layer 13 is not provided on the side of the connecting part 14 facing the second striking part 21 and the side of the first mounting part 12 facing the second striking part 21. This reduces the manufacturing cost of the lift limiter 1 and also prevents the rubber layer 13 from falling off due to excessive area, thus affecting the noise reduction effect of the lift limiter 1.

[0040] Optionally, such as Fig. 1 As shown, the first mounting part 12 is provided with a first connecting hole, and the second mounting part 22 is provided with a second connecting hole. A bolt 32 passes through the first and second connecting holes and is threadedly connected to the stationary disc 3. The first and second connecting holes facilitate the installation and removal of both the first mounting part 12 and the second mounting part 22. The threaded connection of the bolt 32 to the stationary disc 3 makes the connection between the lift limiter 1 and the valve plate 2 and the stationary disc 3 more stable. The single-point fixation of the valve plate 2 causes the second striking part 21 to move towards the first striking part 11 after being impacted by the high-pressure gas discharged from the exhaust port 31. When the force is large, it will contact the first striking part 11. When the pressure of the exhaust port 31 decreases, the opening angle of the second striking part 21 will decrease until it returns to its original position. In this embodiment, the bolt 32 passes through both the first and second connecting holes and is then threadedly connected to the stationary disc 3. In other embodiments, the first bolt may pass through the first mounting hole and connect to the stationary disc 3, and the second bolt may pass through the second mounting hole and connect to the stationary disc 3.

[0041] Optionally, the valve plate 2 is the same shape as the lift limiter 1, and the orthographic projection of the valve plate 2 on the static disc 3 coincides with the orthographic projection of the lift limiter 1 on the static disc 3. When the exhaust valve plate 2 and the lift limiter are installed, the exhaust valve plate 2 and the lift limiter 1 are completely overlapped by using a special tool, which facilitates the assembly of the valve and the lift limiter 1 with the static disc 3, and further improves the production efficiency. In this embodiment, the orthographic projection of the valve plate 2 and the lift limiter 1 on the static disc 3 is arc-shaped at both ends, and in other embodiments, the orthographic projection of the valve plate 2 and the lift limiter 1 on the static disc 3 can be square or hexagonal.

[0042] Another purpose of the embodiment is to provide a compressor to achieve the effect of noise reduction.

[0043] Specifically, the compressor comprises a shell and the above-mentioned valve, the shell is provided with two air chambers, the static disc 3 is arranged in the shell, and the two air chambers are communicated through the exhaust hole 31. By arranging the valve with the noise reduction function on the compressor, the compressor also has the noise reduction function. When the compressor is running, the high-pressure gas is discharged from the exhaust hole 31 of the static disc 3, and the valve plate 2 is opened, when the pressure is too large, the second striking part 21 strikes the rubber layer 13 with a relatively large force, the rubber layer 13 buffers the impact force of the second striking part 21, slows down the impact of the second striking part 21 on the first striking part 11, so that the impact sound of the second striking part 21 and the first striking part 11 is reduced, and the compressor achieves the effect of noise reduction.

[0044] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A gas valve characterized by, The application relates to a lift limiter (1) comprising a first hitting part (11) and a first mounting part (12) connected with each other; a valve piece (2) comprising a second hitting part (21) and a second mounting part (22) connected with each other, wherein a rubber layer (13) is arranged on one side of the first hitting part (11) facing the second hitting part (21), and / or the rubber layer (13) is arranged on one side of the second hitting part (21) facing the first hitting part (11); and a static disc (3) provided with an exhaust hole (31), wherein the first mounting part (12) and the second mounting part (22) are connected with the static disc (3), a gap is left between the first hitting part (11) and the static disc (3), and the first hitting part (11) is arranged opposite to the exhaust hole (31), and the second hitting part (21) is movably arranged in the gap along the axial direction of the exhaust hole (31). The first hitting part (11) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12). The lift limiter (1) further comprises a connecting part (14) connecting the first mounting part (12) with the first hitting part (11). The connecting part (14) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12), and the inclination of the connecting part (14) is different from that of the first hitting part (11).

2. The gas valve of claim 1, wherein The inclination of the connecting part (14) is smaller than that of the first hitting part (11).

3. The gas valve of claim 2, wherein The lift limiter (1) is a carbon steel element.

4. The gas valve of claim 3, wherein The rubber layer (13) is plated on one side of the first hitting part (11) facing the second hitting part (21), or the rubber layer (13) is fixedly attached to the first hitting part (11).

5. The gas valve of claim 4, wherein, The rubber layer (13) covers the whole surface of one side of the first hitting part (11) facing the second hitting part (21).

6. The gas valve according to any one of claims 1 to 5, characterized in that The first mounting part (12) is provided with a first connecting hole, the second mounting part (22) is provided with a second connecting hole, and a bolt (32) is arranged in the first connecting hole and the second connecting hole and is threadedly connected with the static disc (3).

7. The gas valve according to any one of claims 1-5, wherein The application relates to a lift limiter (1) comprising a first hitting part (11) and a first mounting part (12) connected with each other; a valve piece (2) comprising a second hitting part (21) and a second mounting part (22) connected with each other, wherein a rubber layer (13) is arranged on one side of the first hitting part (11) facing the second hitting part (21), and / or the rubber layer (13) is arranged on one side of the second hitting part (21) facing the first hitting part (11); and a static disc (3) provided with an exhaust hole (31), wherein the first mounting part (12) and the second mounting part (22) are connected with the static disc (3), a gap is left between the first hitting part (11) and the static disc (3), and the first hitting part (11) is arranged opposite to the exhaust hole (31), and the second hitting part (21) is movably arranged in the gap along the axial direction of the exhaust hole (31).

8. The gas valve according to any one of claims 1-5, wherein The first hitting part (11) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12).

9. The gas valve according to any one of claims 1-5, wherein The lift limiter (1) further comprises a connecting part (14) connecting the first mounting part (12) with the first hitting part (11).

10. A compressor characterized by, The connecting part (14) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12), and the inclination of the connecting part (14) is different from that of the first hitting part (11). The inclination of the connecting part (14) is smaller than that of the first hitting part (11). The lift limiter (1) is a carbon steel element. The rubber layer (13) is plated on one side of the first hitting part (11) facing the second hitting part (21), or the rubber layer (13) is fixedly attached to the first hitting part (11). The rubber layer (13) covers the whole surface of one side of the first hitting part (11) facing the second hitting part (21). The first mounting part (12) is provided with a first connecting hole, the second mounting part (22) is provided with a second connecting hole, and a bolt (32) is arranged in the first connecting hole and the second connecting hole and is threadedly connected with the static disc (3). The application relates to a lift limiter (1) comprising a first hitting part (11) and a first mounting part (12) connected with each other; a valve piece (2) comprising a second hitting part (21) and a second mounting part (22) connected with each other, wherein a rubber layer (13) is arranged on one side of the first hitting part (11) facing the second hitting part (21), and / or the rubber layer (13) is arranged on one side of the second hitting part (21) facing the first hitting part (11); and a static disc (3) provided with an exhaust hole (31), wherein the first mounting part (12) and the second mounting part (22) are connected with the static disc (3), a gap is left between the first hitting part (11) and the static disc (3), and the first hitting part (11) is arranged opposite to the exhaust hole (31), and the second hitting part (21) is movably arranged in the gap along the axial direction of the exhaust hole (31). The first hitting part (11) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12). The lift limiter (1) further comprises a connecting part (14) connecting the first mounting part (12) with the first hitting part (11). The connecting part (14) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12), and the inclination of the connecting part (14) is different from that of the first hitting part (11). The inclination of the connecting part (14) is smaller than that of the first hitting part (11). The lift limiter (1) is a carbon steel element. The rubber layer (13) is plated on one side of the first hitting part (11) facing the second hitting part (21), or the rubber layer (13) is fixedly attached to the first hitting part (11). The rubber layer (13) covers the whole surface of one side of the first hitting part (11) facing the second hitting part (21). The first mounting part (12) is provided with a first connecting hole, the second mounting part (22) is provided with a second connecting hole, and a bolt (32) is arranged in the first connecting hole and the second connecting hole and is threadedly connected with the static disc (3). The application relates to a lift limiter (1) comprising a first hitting part (11) and a first mounting part (12) connected with each other; a valve piece (2) comprising a second hitting part (21) and a second mounting part (22) connected with each other, wherein a rubber layer (13) is arranged on one side of the first hitting part (11) facing the second hitting part (21), and / or the rubber layer (13) is arranged on one side of the second hitting part (21) facing the first hitting part (11); and a static disc (3) provided with an exhaust hole (31), wherein the first mounting part (12) and the second mounting part (22) are connected with the static disc (3), a gap is left between the first hitting part (11) and the static disc (3), and the first hitting part (11) is arranged opposite to the exhaust hole (31), and the second hitting part (21) is movably arranged in the gap along the axial direction of the exhaust hole (31). The first hitting part (11) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12). The lift limiter (1) further comprises a connecting part (14) connecting the first mounting part (12) with the first hitting part (11). The connecting part (14) is inclined in a direction away from the second hitting part (21) from one side connected with the first mounting part (12) to the other side away from the first mounting part (12), and the inclination of the connecting part (14) is different from that of the first hitting part (11). The inclination of the connecting part (14) is smaller than that of the first hitting part (11). The lift limiter (1) is a carbon steel element. The rubber layer (13) is plated on one side of the first hitting part (11) facing the second hitting part (21), or the rubber layer (13) is fixedly attached to the first hitting part (11). The rubber layer (13) covers the whole

Images