Valve system with noise reduction cavity and pneumatic cutting device

Abstract

The utility model provides a valve system with a noise reduction cavity and a pneumatic cutting device, and relates to the technical field of medical instruments, the valve system with the noise reduction cavity comprises a manifold, a first channel and a second channel are arranged in the manifold, one end of the first channel is an air inlet, and the other end of the first channel is an air outlet; the other end of the first channel is communicated with one end of the second channel, and the other end of the second channel is an air outlet; and the cross sectional area of the second channel is larger than that of the first channel.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a valve system with a noise reduction cavity and a pneumatic cutting device. Background Art

[0002] In ophthalmic surgery, a vitrector is often needed to remove the vitreous. The high-speed vitrector is often driven by a high-speed pneumatic valve. Compressed gas is controlled by the pneumatic valve and does work on the vitrector in an orderly manner, generating an orderly forward and backward cutting motion. The compressed gas after doing work will return to the exhaust port of the pneumatic valve and finally be discharged into the atmosphere in various ways.

[0003] With the increase of the cutting speed of the vitrector, the switching frequency of the pneumatic valve is getting faster and faster, resulting in a louder exhaust noise. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a valve system with a noise reduction cavity and a pneumatic cutting device to alleviate the technical problem of high noise of existing cutting equipment.

[0005] In a first aspect, the valve system with a noise reduction cavity provided by the utility model includes: a manifold, wherein a first channel and a second channel are arranged inside the manifold, one end of the first channel is an air inlet, the other end is communicated with one end of the second channel, and the other end of the second channel is an air outlet;

[0006] And the cross-sectional area of the second channel is larger than that of the first channel.

[0007] Furthermore, the volume of the first channel is smaller than that of the second channel.

[0008] Furthermore, the valve system with a noise reduction cavity further includes an electromagnetic valve, the electromagnetic valve has an inlet, a gas guiding port, an exhaust port and a switching structure, and the switching structure is used to communicate the inlet with the gas guiding port or to communicate the gas guiding port with the exhaust port;

[0009] The exhaust port is connected to the air inlet;

[0010] A joint is further arranged on the manifold, the gas guiding port is communicated with one end of the joint, and the other end of the joint is used to be connected with a cutter.

[0011] Furthermore, the number of the joints is one or more.

[0012] Furthermore, the diameter of the first channel is the same as that of the exhaust port.

[0013] Further, the solenoid valve and the air outlet are disposed on one side surface of the manifold, and the joint is disposed on the opposite side surface of the manifold.

[0014] Further, the valve system with a noise reduction cavity further includes a muffler, and the muffler is connected to the air outlet.

[0015] Further, the manifold includes a main body and a cover body. A groove recessed inward is disposed on one surface of the main body. The cover body is connected to the surface with the groove and covers the opening of the groove. The groove and the cover body enclose the second channel.

[0016] Further, a sealing ring is disposed between the cover body and the main body.

[0017] In a second aspect, a pneumatic cutting device provided by the present invention includes the above valve system with a noise reduction cavity.

[0018] The present invention at least has the following advantages or beneficial effects:

[0019] The valve system with a noise reduction cavity provided by the present invention includes: a manifold, a first channel and a second channel are disposed inside the manifold. One end of the first channel is an air inlet, and the other end communicates with one end of the second channel. The other end of the second channel is an air outlet; and the cross-sectional area of the second channel is larger than that of the first channel.

[0020] Compressed gas enters the first channel of the manifold. Since the cross-sectional area of the first channel is small, the velocity of the air flow is very high at this time. The high-speed air flow passes through the first channel and enters the second channel. The cross-sectional area of the second channel is very large, and the flow velocity of the gas is reduced to a relatively low level in a very short time, decelerating the high-speed gas, thereby reducing the noise.

[0021] The pneumatic cutting device provided by the present invention includes the above valve system with a noise reduction cavity. Because the pneumatic cutting device provided by the present invention incorporates the above valve system with a noise reduction cavity, the pneumatic cutting device provided by the present invention also has the advantages of the valve system with a noise reduction cavity. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1Schematic diagram of a valve system with a noise reduction cavity provided by an embodiment of the present utility model;

[0024] Figure 2 Exploded view of a valve system with a noise reduction cavity provided by an embodiment of the present utility model;

[0025] Figure 3 Cross-sectional view of a valve system with a noise reduction cavity provided by an embodiment of the present utility model.

[0026] Reference numerals: 10 - solenoid valve; 20 - manifold; 30 - muffler; 110 - exhaust port; 220 - second channel; 40 - cover; 210 - first channel; 230 - connector. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein generally may be arranged and designed in a variety of different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] 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.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed. This is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" 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 invention can be understood according to specific situations.

[0033] As Figure 1 - Figure 3 As shown, the valve system with a noise reduction cavity provided by the present invention includes: a solenoid valve 10, a manifold 20, and a muffler 30.

[0034] As Figure 3 As shown, wherein, a first channel 210 and a second channel 220 are provided inside the manifold 20. One end of the first channel 210 is an air inlet, and the other end is communicated with one end of the second channel 220. The other end of the second channel 220 is an air outlet; and the cross-sectional area of the second channel 220 is larger than that of the first channel 210, so as to form a stepped structure with a sudden change in cross-section at the connection of the first channel 210 and the second channel 220. And, the volume of the first channel 210 is smaller than the volume of the second channel 220. This cavity is located inside the installation manifold 20, which is beneficial to the miniaturization of the equipment.

[0035] The solenoid valve 10 has an inlet, a gas guiding port, an exhaust port 110, and a switching structure. The switching structure is used to connect the inlet with the gas guiding port or connect the gas guiding port with the exhaust port 110. This function belongs to the prior art, and the specific structure will not be elaborated here. The exhaust port 110 is connected to the air inlet; a joint 230 is also provided on the manifold 20. The gas guiding port is communicated with one end of the joint 230, and the other end of the joint 230 is used to connect with a cutter. When it is necessary to output gas to the cutter, the switching structure connects the inlet with the gas guiding port. After the gas works, the switching structure connects the gas guiding port with the exhaust port 110 to transmit the working gas into the first channel 210 of the manifold 20.

[0036] Furthermore, the valve system with a noise reduction cavity further includes a muffler 30. The muffler 30 is connected to the air outlet, which can further reduce noise emissions.

[0037] Specifically, after the compressed gas enters the solenoid valve 10, it first enters the vitreous cutter through the joint 230 under the control of the controller, driving the vitreous cutter to move forward and backward, and then enters the first channel 210 of the manifold 20 through the exhaust port 110 of the solenoid valve 10. Since the cross-sectional area of ​​the first channel 210 is small, the speed of the airflow is very high at this time. The high-speed airflow enters the second channel 220 through the first channel 210. The cross-sectional area of ​​the second channel 220 is large, and the flow rate of the gas is reduced to a lower level in a very short time. At the same time, since the volume of the second channel 220 is much larger than the volume of the first channel 210, the gas pressure will also drop rapidly. Then it is further noise-reduced through the muffler 30, and finally discharged into the atmosphere.

[0038] Furthermore, the number of the connectors 230 is one or more, and multiple cutters can be connected at the same time.

[0039] In order to adapt the solenoid valve 10 and the manifold 20 , the diameter of the first channel 210 is consistent with the diameter of the exhaust port 110 to facilitate docking.

[0040] The solenoid valve 10 and the air outlet are disposed on one side of the manifold 20 , and the joint 230 is disposed on another opposite side of the manifold 20 .

[0041] The solenoid valve 10 and the air outlet are arranged on the same side, while the connectors 230 are arranged on the other opposite side, so as to avoid interference between them. In particular, after covering the shell, only the connectors 230 can be exposed outside and the solenoid valve 10 is hidden.

[0042] The manifold 20 includes a main body and a cover 40 . One side of the main body is provided with an inwardly recessed groove. The cover 40 is connected to the surface with the groove and covers the opening of the groove. The groove and the cover 40 enclose the second channel 220 .

[0043] The first channel 210 and the second channel 220 are both formed by punching, and since the diameter of the second channel 220 is relatively large, it is necessary to use the cover 40 for blocking, and in order to prevent air leakage, a sealing ring is provided between the cover and the main body to further improve the sealing performance. The main body and the cover 40 can be connected by four screws.

[0044] The pneumatic cutting device provided by the utility model includes the valve system of the noise reduction cavity. Because the pneumatic cutting device provided by the utility model uses the valve system with the noise reduction cavity, the pneumatic cutting device provided by the utility model also has the advantages of the valve system with the noise reduction cavity.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve system with a noise reduction cavity, characterized in that: include: A manifold (20), wherein a first channel (210) and a second channel (220) are provided inside the manifold (20), one end of the first channel (210) is an air inlet, and the other end of the first channel (210) is connected to one end of the second channel (220), and the other end of the second channel (220) is an air outlet; Furthermore, the cross-sectional area of ​​the second channel (220) is greater than the cross-sectional area of ​​the first channel (210).

2. The valve system with a noise reduction cavity according to claim 1, characterized in that: The volume of the first channel (210) is smaller than the volume of the second channel (220).

3. The valve system with a noise reduction cavity according to claim 1, characterized in that: The valve system with a noise reduction cavity further comprises a solenoid valve (10), wherein the solenoid valve (10) comprises an inlet, an air guide port, an exhaust port (110), and a switching structure, wherein the switching structure is used to connect the inlet with the air guide port or connect the air guide port with the exhaust port (110); The exhaust port (110) is connected to the air inlet; The manifold (20) is also provided with a joint (230), the air guide port is in communication with one end of the joint (230), and the other end of the joint (230) is used to be connected to the cutter.

4. The valve system with a noise reduction cavity according to claim 3, characterized in that: The number of the connectors (230) is one or more.

5. The valve system with a noise reduction cavity according to claim 3, characterized in that: The diameter of the first channel (210) is consistent with the diameter of the exhaust port (110).

6. The valve system with a noise reduction cavity according to claim 3, characterized in that: The solenoid valve (10) and the air outlet are arranged on one side of the manifold (20), and the joint (230) is arranged on the other opposite side of the manifold (20).

7. The valve system with a noise reduction cavity according to claim 1, characterized in that: The valve system with a noise reduction cavity further comprises a muffler (30), wherein the muffler (30) is connected to the air outlet.

8. The valve system with a noise reduction cavity according to claim 1, characterized in that: The manifold (20) comprises a main body and a cover (40), one side of the main body is provided with an inwardly recessed groove, the cover (40) is connected to the surface with the groove and covers the opening of the groove, and the groove and the cover (40) enclose the second channel (220).

9. The valve system with a noise reduction cavity according to claim 8, characterized in that: A sealing ring is provided between the cover body (40) and the main body.

10. A pneumatic cutting device, characterized in that: A valve system with a noise reduction cavity comprising the valve system described in any one of claims 1 to 9.

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