Noise reduction type vacuum pump

Abstract

The utility model relates to the technical field of vacuum pumps, in particular to a noise reduction type vacuum pump which comprises an air outlet umbrella-shaped support and an air outlet non-return umbrella-shaped support, the air outlet non-return umbrella-shaped support is installed on the top face of the air outlet umbrella-shaped support, and a noise reduction support is arranged on the upper side of the air outlet umbrella-shaped support. A first noise reduction chamber and a fourth noise reduction chamber are arranged on the top face of the noise reduction support, a second noise reduction chamber and a third noise reduction chamber are arranged on the bottom face of the noise reduction support, and a rubber noise reduction valve is installed in the first noise reduction chamber. The first noise reduction chamber, the second noise reduction chamber, the third noise reduction chamber, the fourth noise reduction chamber and the semicircular noise reduction rubber valve plate are additionally arranged on the noise reduction support, so that when noise generated when the sucking pump works passes through the structural parts, only gas passes through the structural parts smoothly, the noise is compressed and consumed due to the air channels, and finally the low-noise effect is achieved; and the experience feeling of a customer is greatly improved during use.

Description

Technical Field

[0001] The utility model relates to a vacuum pump, in particular to a noise reduction type vacuum pump. Background Art

[0002] Vacuum pumps are mainly used in products and places that require vacuum. This type of pump is a diaphragm-type pump. The inlet / outlet check valves are made of rubber sheet structure. When the gas is compressed out by the tympanic membrane, the side of the check valve will open under the action of air pressure to release the gas. When the tympanic membrane completes the inflation and goes to the next cycle to perform the vacuum action, the outlet check valve is closed to prevent gas backflow, thus forming an effective working cycle. In this process, since the check valve is opened and closed very quickly (about 100 times per second), high-speed vibration is formed, thereby generating noise, which is transmitted along the gas outlet. Traditional vacuum pumps lack effective noise reduction structures, resulting in a lot of noise when the product is in use, which gives users a bad experience. Based on the above reasons, the utility model proposes a noise reduction vacuum pump. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a noise reduction type vacuum pump to overcome the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A noise reduction vacuum pump comprises an air outlet umbrella-shaped bracket, an air outlet check umbrella is installed on the top surface of the air outlet umbrella-shaped bracket, a silencer bracket is arranged on the upper side of the air outlet umbrella-shaped bracket, a first noise reduction chamber and a fourth noise reduction chamber are arranged on the top surface of the silencer bracket, a second noise reduction chamber and a third noise reduction chamber are arranged on the bottom surface of the silencer bracket, a rubber silencer valve is installed in the first noise reduction chamber, a silencer check umbrella is installed in the fourth noise reduction chamber, and a noise reduction upper cover is arranged on the upper side of the silencer bracket.

[0006] As a preferred technical solution of the utility model, a vent hole is provided on the silencer bracket, and the vent hole is arranged through the upper and lower side walls of the silencer bracket.

[0007] As a preferred technical solution of the utility model, the inner side wall of the noise reduction upper cover and the shape of the silencer bracket are matched with each other, the silencer bracket is inserted into the noise reduction upper cover, and the diameter of the noise reduction upper cover is the same as the diameter of the air outlet umbrella bracket and is concentrically arranged.

[0008] As a preferred technical solution of the utility model, three threaded holes are provided on the noise reduction upper cover and the air outlet umbrella-shaped bracket, and the threaded holes on the noise reduction upper cover and the air outlet umbrella-shaped bracket are concentrically arranged.

[0009] As a preferred technical solution of the utility model, the upper side of the rubber silencer valve is arranged in a circular ring shape, and the lower side of the rubber silencer valve is arranged in a semicircular shape.

[0010] As a preferred technical solution of the utility model, the air outlet check parachutes are distributed in a ring array, and three air outlet check parachutes are arranged.

[0011] The embodiment of the utility model provides a noise reduction type vacuum pump, which has the following beneficial effects:

[0012] The utility model adds the first, second, third and fourth noise reduction chambers and a semicircular noise reduction rubber valve sheet on the silencer bracket, so that the noise generated by the vacuum pump when working, when passing through the above-mentioned structural parts, only the gas passes smoothly, and the noise is finally reduced due to airway compression and airway consumption, which greatly improves the customer's experience when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is the exploded structure diagram of the utility model;

[0015] Figure 2 This is a front structural schematic diagram of the utility model silencer bracket;

[0016] Figure 3 It is a schematic diagram of the bottom structure of the utility model silencer bracket;

[0017] Figure 4 It is a structural schematic diagram of the rubber muffler valve of the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the bottom structure of the noise reduction upper cover.

[0019] In the figure: 1. Air outlet umbrella bracket; 2. Air outlet check umbrella; 3. Silence bracket; 4. First noise reduction chamber; 5. Fourth noise reduction chamber; 6. Second noise reduction chamber; 7. Third noise reduction chamber; 8. Rubber silencer valve; 9. Silence check umbrella; 10. Noise reduction cover; 11. Vent hole; 12. Threaded hole. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example: Figure 1-5As shown, a noise reduction type vacuum pump comprises an air outlet umbrella bracket 1, an air outlet check umbrella 2 is installed on the top surface of the air outlet umbrella bracket 1, the air outlet check umbrella 2 is arranged in a ring array, and there are three air outlet check umbrellas 2. A silencer bracket 3 is arranged on the upper side of the air outlet umbrella bracket 1, and a vent 11 is opened on the silencer bracket 3. The vent 11 runs through the upper and lower side walls of the silencer bracket 3. A first noise reduction chamber 4 and a fourth noise reduction chamber 5 are arranged on the top surface of the silencer bracket 3, and a second noise reduction chamber 6 and a third noise reduction chamber 7 are arranged on the bottom surface of the silencer bracket 3. By adding the first noise reduction chamber 4, the second noise reduction chamber 6, the third noise reduction chamber 5, the fourth noise reduction chamber 7 and the rubber silencer valve 8, the noise generated when the vacuum pump is working, when passing through the above-mentioned structural parts, only the gas passes smoothly, and the noise is compressed and consumed by the airway, and finally a low noise effect is produced;

[0022] A rubber muffler valve 8 is installed in the first noise reduction chamber 4, the upper side of the rubber muffler valve 8 is arranged in a circular ring shape, and the lower side of the rubber muffler valve 8 is arranged in a semicircular shape. A muffler check umbrella 9 is installed in the fourth noise reduction chamber 5, and a noise reduction upper cover 10 is arranged on the upper side of the muffler bracket 3, which can achieve further noise reduction operation;

[0023] Among them, the inner wall of the noise reduction upper cover 10 and the shape of the silencer bracket 3 are matched with each other, and the silencer bracket 3 is inserted into the noise reduction upper cover 10. The diameter of the noise reduction upper cover 10 is the same as the diameter of the air outlet umbrella bracket 1 and is concentrically arranged, so that the structures can be matched and installed;

[0024] Among them, three threaded holes 12 are opened on the noise reduction cover 10 and the air outlet umbrella bracket 1. The threaded holes 12 on the noise reduction cover 10 and the air outlet umbrella bracket 1 are concentrically arranged, and the device can be fixedly installed by external bolt fasteners.

[0025] Working principle: When the device of the utility model is in use, when the airflow passes through the air outlet check umbrella 2 and reaches the rubber muffler valve 8, the rubber muffler valve 8 is opened due to the gas pressure, and the gas flows out. However, each time the gas flows out, the opening amplitude of the rubber muffler valve 8 is less than 0.2mm, and the gas flowing out of the rubber muffler valve 8 gathers and flows out from the central air outlet hole. Due to the obstruction of the hole, the noise is pressed back into the first noise reduction chamber 4. The upper cover of the air outlet noise reduction channel is provided with a second noise reduction chamber 6, and three noise reduction air flow holes 11 are provided around it. When the gas passes After passing through the central valve plate, the noise is further pressed back into the noise reduction chamber and consumed. The silencer bracket 3 is provided with a third noise reduction chamber 7, which is provided with an annular airflow channel and air outlet holes. The silencer bracket 3 is provided with a fourth noise reduction chamber 5 on the periphery, which is provided with an airflow channel and air vents 11. When the gas finally passes through the narrow and long channel, the noise is compressed and consumed again. Finally, the gas has to pass through the three air outlet holes provided at the noise reduction upper cover 10 to further block the outflow of noise. Through the above four noise reduction structures, the noise of the suction pump during operation is effectively reduced.

[0026] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A noise reduction vacuum pump, comprising an air outlet umbrella-shaped support (1), characterized in that: An air outlet check parachute (2) is installed on the top surface of the air outlet parachute support (1), a silencer support (3) is arranged on the upper side of the air outlet parachute support (1), a first noise reduction chamber (4) and a fourth noise reduction chamber (5) are arranged on the top surface of the silencer support (3), a second noise reduction chamber (6) and a third noise reduction chamber (7) are arranged on the bottom surface of the silencer support (3), a rubber silencer valve (8) is installed in the first noise reduction chamber (4), a silencer check parachute (9) is installed in the fourth noise reduction chamber (5), and a noise reduction upper cover (10) is arranged on the upper side of the silencer support (3).

2. A noise reduction vacuum pump according to claim 1, characterized in that: The silencer bracket (3) is provided with a vent hole (11), and the vent hole (11) is arranged through the upper and lower side walls of the silencer bracket (3).

3. A noise reduction vacuum pump according to claim 1, characterized in that: The inner side wall of the noise reduction upper cover (10) and the silencer bracket (3) are arranged in a shape matching each other, the silencer bracket (3) is inserted into the noise reduction upper cover (10), and the diameter of the noise reduction upper cover (10) is the same as the diameter of the air outlet umbrella bracket (1) and is arranged concentrically.

4. A noise reduction vacuum pump according to claim 1, characterized in that: The noise reduction upper cover (10) and the air outlet umbrella-shaped bracket (1) are both provided with three threaded holes (12), and the threaded holes (12) on the noise reduction upper cover (10) and the air outlet umbrella-shaped bracket (1) are concentrically arranged.

5. A noise reduction vacuum pump according to claim 1, characterized in that: The upper side of the rubber silencer valve (8) is arranged in a circular ring shape, and the lower side of the rubber silencer valve (8) is arranged in a semicircular shape.

6. A noise reduction vacuum pump according to claim 1, characterized in that: The air outlet check parasols (2) are arranged in a ring-shaped array, and three of the air outlet check parasols (2) are arranged.

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