Noise reduction device for a vacuum pump

Abstract

This utility model discloses a noise reduction device for a vacuum pump, including a vacuum pump housing, a conversion box, and a mounting base. A bracket is installed inside the mounting base, near the front and rear. A first silencer is embedded between the brackets on the upper part of the housing, and a second silencer is embedded between the brackets on both sides of the lower part of the housing. A housing cover is installed on top of the vacuum pump housing. A vacuum pump intake port is installed on the lower side of the front surface of the vacuum pump housing, and a vacuum pump exhaust port is installed on the lower side of the front surface of the housing. An equipment interface is installed on the front surface of the conversion box. An inverted U-shaped positioning rod is installed at the upper end of the bracket. This noise reduction device for a vacuum pump can silence the suction and exhaust processes of the vacuum pump. Furthermore, when disassembling the silencers, it is not necessary to process the bracket supporting the silencers to remove them from the mounting base, and the position of the bracket can be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump noise reduction technology, and in particular to a noise reduction device for a vacuum pump. Background Technology

[0002] A vacuum pump is a device that uses rotary displacement and other methods to extract or discharge gas. Its core characteristics include a large pumping speed over a wide pressure range, and low vibration and smooth operation due to the good geometric symmetry of the rotor. However, vacuum pumps generate noise during intake and exhaust. When replacing the silencer, since the silencer is fixed on the bracket, the bracket needs to be disassembled before the silencer can be replaced, which is quite troublesome. Utility Model Content

[0003] The main objective of this invention is to provide a noise reduction device for vacuum pumps, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A noise reduction device for a vacuum pump includes a vacuum pump housing, a conversion housing, and a mounting base. A bracket is installed inside the mounting base, near the front and rear. A first silencer is embedded between the brackets, located at the top interior. Second silencers are embedded between the brackets, located on both sides at the bottom interior. A housing cover is installed on top of the vacuum pump housing. A vacuum pump intake port is installed on the front surface of the vacuum pump housing, located on one side at the bottom. A vacuum pump exhaust port is installed on the front surface of the vacuum pump housing, located on the other side at the bottom. An equipment interface is installed on the front surface of the conversion housing. An inverted U-shaped positioning rod is installed at the upper end of the bracket. A silencer intake port is installed at the rear end of the first silencer. A silencer exhaust port is installed at the front end of the second silencer on one side of the bracket.

[0006] More preferably, the two second silencers are connected end to end by a conduit, one end of one second silencer is connected to the exhaust port of the vacuum pump by a conduit, the first silencer is connected to the conversion box by a conduit, and the conversion box is connected to the suction port of the vacuum pump by a conduit.

[0007] More preferably, the mounting base has positioning grooves on both sides near the front and rear, and the number of positioning grooves is several. The mounting base also has limit sliding grooves on its inner lower surface near both sides.

[0008] More preferably, the bracket has lifting grooves on both sides and near the top, a guide rod is installed inside the lifting groove, a spring is sleeved on the guide rod, an installation groove is opened inside the bracket, and a limiting slider embedded in the limiting groove is installed on the lower surface of the bracket and near both sides.

[0009] More preferably, the inner two sides of the inverted U-shaped positioning rod and near the top are fitted with sliding sleeves that are sleeved on the guide rod, and the lower end of the inverted U-shaped positioning rod is embedded in the positioning groove.

[0010] Compared with the prior art, this utility model proposes a noise reduction device for a vacuum pump, which has the following beneficial effects:

[0011] In this invention, by setting up a vacuum pump box, a conversion box, a No. 1 silencer, and a No. 2 silencer in a coordinated manner, the No. 1 silencer and the No. 2 silencer can be used to reduce noise during the exhaust and suction processes of the vacuum pump box.

[0012] By using a mounting base, bracket, and inverted U-shaped positioning rod in a coordinated manner, the bracket can support both mufflers No. 1 and No. 2, ensuring they remain horizontal after installation. When it is necessary to disassemble or replace mufflers No. 1 and No. 2, pull up the inverted U-shaped positioning rod, causing its lower end to exit the positioning slot. Then, move the bracket, allowing both ends of mufflers No. 1 and No. 2 to move out of their respective mounting slots. After replacement, move the bracket back to its original position and reposition it using the inverted U-shaped positioning rod and the positioning slot. This eliminates the need to remove the bracket from the mounting base when disassembling the mufflers, and the bracket's position can be adjusted using the inverted U-shaped positioning rod and the positioning slots at different locations. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of a noise reduction device for a vacuum pump according to the present invention;

[0014] Figure 2 This is a structural diagram of the bracket for a noise reduction device of a vacuum pump according to the present invention;

[0015] Figure 3 This is a structural diagram of the inverted U-shaped positioning rod of a noise reduction device for a vacuum pump according to this utility model.

[0016] In the diagram: 1. Vacuum pump box; 2. Box cover; 3. Conversion box; 4. Vacuum pump intake port; 5. Vacuum pump exhaust port; 6. Equipment interface; 7. Mounting base; 701. Limiting slide groove; 702. Positioning groove; 8. Bracket; 801. Mounting groove; 802. Limiting slider; 803. Lifting groove; 804. Guide rod; 805. Spring; 9. Inverted U-shaped positioning rod; 901. Sliding sleeve; 10. Silencer intake port; 11. No. 2 silencer; 12. No. 1 silencer; 13. Silencer exhaust port. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] It should be noted that all directional indicators such as up, down, left, right, front, back, etc. in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can refer to a fixed connection, a detachable connection, or an integral part; it can also refer to a mechanical connection, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figure 1-3 As shown, a noise reduction device for a vacuum pump includes a vacuum pump housing 1, a conversion box 3, and a mounting base 7. A bracket 8 is installed inside the mounting base 7, near the front and rear. A first silencer 12 is embedded between the brackets 8 and located on the upper part of the housing. A second silencer 11 is embedded between the brackets 8 and located on both sides of the lower part of the housing. A housing cover 2 is installed on the top of the vacuum pump housing 1. A vacuum pump intake port 4 is installed on the lower side of the front surface of the vacuum pump housing 1. A vacuum pump exhaust port 5 is installed on the other side of the lower front surface of the vacuum pump housing 1. An equipment interface 6 is installed on the front surface of the conversion box 3. An inverted U-shaped positioning rod 9 is installed at the upper end of the bracket 8. A silencer intake port 10 is installed at the rear end of the first silencer 12. A silencer exhaust port 13 is installed at the front end of the second silencer 11 on one side of the bracket 8.

[0021] In a preferred embodiment: two second silencers 11 are connected end to end by a conduit, one end of one second silencer 11 is connected to the exhaust port 5 of the vacuum pump through a conduit, the first silencer 12 is connected to the conversion box 3 through a conduit, and the conversion box 3 is connected to the suction port 4 of the vacuum pump through a conduit.

[0022] In a preferred embodiment, positioning grooves 702 are provided on both sides of the mounting base 7 near the front and rear, and the number of positioning grooves 702 is several. Limiting grooves 701 are provided on the lower inner surface of the mounting base 7 near both sides.

[0023] In the above structure, since the limiting slider 802 is embedded in the limiting groove 701, the movement trajectory of the bracket 8 is restricted by the limiting groove 701, so that the bracket 8 can only move in a straight line when it moves.

[0024] In a preferred embodiment: lifting grooves 803 are provided on both sides of the bracket 8 near the top, guide rods 804 are installed inside the lifting grooves 803, springs 805 are sleeved on the guide rods 804, mounting grooves 801 are provided inside the bracket 8, and limiting sliders 802 embedded in limiting grooves 701 are installed on the lower surface of the bracket 8 near both sides.

[0025] In the above structure, the spring 805 is in an extended state in its natural state, and the elastic coefficient of the spring 805 must ensure that the lower end of the inverted U-shaped positioning rod 9 will not detach from the positioning groove 702 without a large upward pulling force.

[0026] In a preferred embodiment, a sliding sleeve 901 fitted on the guide rod 804 is installed on both inner sides of the inverted U-shaped positioning rod 9 near the top, and the lower end of the inverted U-shaped positioning rod 9 is embedded in the positioning groove 702.

[0027] In the above structure, when the lower end of the inverted U-shaped positioning rod 9 is embedded in the positioning groove 702 at different positions, the position of the bracket 8 can be limited, so that the position of the bracket 8 can be flexibly adjusted.

[0028] In use, the converter box 3 connects to the equipment via its interface 6. The converter box 3 operates in two states. In the first state, the silencer intake 10 is closed, and the vacuum pump intake 4 of the vacuum pump box 1 generates suction, causing the equipment interface 6 to draw in air. The airflow discharged from the vacuum pump exhaust 5 is then silenced by two second-order silencers 11, significantly reducing noise, and finally discharged from the silencer exhaust 13. In the second state, the silencer intake 10 is open, and the airflow passes through the silencer intake 10, the converter box 3, and the vacuum pump intake 4 into the vacuum pump box 1. At this time, the airflow is silenced by the first-order silencer 12, significantly reducing noise. The silencer exhaust 13 is the same as in the previous state, with a small amount of airflow discharged from the equipment interface 6. In both states, the silencer intake 10... The airflow from both the 0 and the muffler exhaust vent 13 is silencing and noise reduction, achieving the desired effect. When it is necessary to replace the first muffler 12 and the second muffler 11, pull up the inverted U-shaped positioning rod 9 so that the lower end of the inverted U-shaped positioning rod 9 is pulled out of the positioning groove 702. Then, the bracket 8 can be moved so that the two ends of the first muffler 12 and the second muffler 11 are removed from the mounting grooves 801 of the two brackets 8 respectively. After replacement, move the bracket 8 back to its original position and use the cooperation of the inverted U-shaped positioning rod 9 and the positioning groove 702 to reposition the bracket 8. This way, it is not necessary to remove the bracket 8 from the mounting base 7 when disassembling the muffler, and the position of the bracket 8 can be adjusted by using the inverted U-shaped positioning rod 9 in cooperation with the positioning grooves 702 at different positions.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a vacuum pump, characterized in that: The device includes a vacuum pump box (1), a conversion box (3), and a mounting base (7). A bracket (8) is installed inside the mounting base (7) near the front and rear. A first silencer (12) is embedded between the brackets (8) and on the upper part of the inside. A second silencer (11) is embedded between the brackets (8) and on the lower sides of the inside. A box cover (2) is installed on the top of the vacuum pump box (1). A vacuum pump suction port (4) is installed on the front surface of the vacuum pump box (1) and on the lower side. A vacuum pump exhaust port (5) is installed on the front surface of the vacuum pump box (1) and on the other side of the lower side. An equipment interface (6) is installed on the front surface of the conversion box (3). An inverted U-shaped positioning rod (9) is installed at the upper end of the bracket (8). A silencer suction port (10) is installed at the rear end of the first silencer (12). A silencer exhaust port (13) is installed at the front end of the second silencer (11) on one side of the bracket (8).

2. The noise reduction device for a vacuum pump according to claim 1, characterized in that: The two second silencers (11) are connected end to end by a conduit. One end of one of the second silencers (11) is connected to the exhaust port (5) of the vacuum pump through a conduit. The first silencer (12) is connected to the conversion box (3) through a conduit. The conversion box (3) is connected to the suction port (4) of the vacuum pump through a conduit.

3. The noise reduction device for a vacuum pump according to claim 2, characterized in that: The mounting base (7) has positioning grooves (702) on both sides and near the front and rear. There are several positioning grooves (702). The mounting base (7) has limit sliding grooves (701) on the inner lower surface and near both sides.

4. The noise reduction device for a vacuum pump according to claim 3, characterized in that: The bracket (8) has lifting grooves (803) on both sides and near the top. A guide rod (804) is installed inside the lifting groove (803). A spring (805) is sleeved on the guide rod (804). An installation groove (801) is opened inside the bracket (8). A limiting slider (802) embedded in the limiting groove (701) is installed on the lower surface of the bracket (8) and near both sides.

5. The noise reduction device for a vacuum pump according to claim 4, characterized in that: The inner two sides of the inverted U-shaped positioning rod (9) and near the top are fitted with a sliding sleeve (901) on the guide rod (804), and the lower end of the inverted U-shaped positioning rod (9) is embedded in the positioning groove (702).

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