A vacuum pump noise reduction structure

Abstract

The utility model provides a vacuum pump noise reduction structure, include: the exhaust port department of vacuum pump rotor chamber bottom is installed with the detachable plug -in pipe, the box cover setting is in vacuum pump rotor chamber downside, the box body is installed to the box cover lower surface, the muffler is installed in the box body, the air inlet end of muffler is installed with the butt joint pipe, butt joint pipe is away from the one end of muffler and extends to the upside of box cover, butt joint pipe is pasted with seal cover in, the plug -in pipe lower extreme is inserted in seal cover, the air outlet end of muffler is installed with the connecting pipe, the one end of connecting pipe is away from muffler and extends to the outside of box body, the support board is set up on the plug -in pipe and is connected with plug -in pipe through screw, the both ends of support board all extend to the outside of vacuum pump rotor chamber, the both ends of support board all are connected with box cover through connecting piece, the utility model has the following advantages: realize convenient connection silencer and vacuum pump rotor chamber.

Description

Technical Field

[0001] This utility model relates to a noise reduction structure for vacuum pumps, belonging to the field of vacuum pumps. Background Technology

[0002] Vacuum pumps, as common equipment in industrial production, generate noise that not only affects the comfort of the working environment but may also lead to occupational health problems (such as hearing damage). The gas pressure relief shock wave from the exhaust port at the bottom of the vacuum pump rotor chamber is one of the main noise sources, and installing a silencer at the exhaust port is a common noise reduction measure. Currently, the flange at the exhaust port at the bottom of the vacuum pump rotor chamber is usually connected to the silencer inlet end with multiple screws. However, because the flange size at the bottom of the rotor chamber is smaller than the rotor chamber body size, silencer installation is inconvenient. Operators either need to bend over and tighten the bolts in a confined space, or they need to rotate the rotor chamber to adjust its position. Both methods are labor-intensive and inefficient, and rotating the rotor chamber may also cause internal parts to shift, affecting equipment accuracy. This inconvenient installation not only increases maintenance costs but may also lead to a decrease in the sealing performance between the silencer and the exhaust port due to improper installation, thus affecting the noise reduction effect and equipment operational stability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vacuum pump noise reduction structure to solve the problems mentioned in the background technology. This utility model realizes a convenient connection between the silencer and the vacuum pump rotor chamber.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pump noise reduction structure, comprising:

[0005] The vacuum pump rotor chamber has a detachable connector installed at the exhaust port at its bottom.

[0006] The cover is located on the lower side of the vacuum pump rotor chamber, and the housing is installed on the lower surface of the cover.

[0007] A muffler is installed inside the housing. The air inlet of the muffler is equipped with a connecting pipe. The end of the connecting pipe away from the muffler passes through the housing cover and extends to the upper side of the housing cover. A sealing sleeve is pasted inside the connecting pipe. The lower end of the insertion pipe is inserted into the sealing sleeve. The air outlet of the muffler is equipped with a connecting pipe. The end of the connecting pipe away from the muffler extends to the outside of the housing.

[0008] The support plate is fitted onto the insertion pipe and connected to the insertion pipe with screws. Both ends of the support plate extend to the outer side of the vacuum pump rotor chamber, and both ends of the support plate are connected to the housing cover through connectors.

[0009] Furthermore, the connector includes:

[0010] There are two connecting seats, which are respectively installed on two parallel sides of the box cover. The connecting seats are L-shaped.

[0011] A threaded head is installed on the top of the connector, and a nut is threaded onto the threaded head. The upper end of the threaded head passes through the support plate, and the nut is located on the upper side of the support plate.

[0012] Furthermore, an arc-shaped opening is provided on the upper surface of the support plate away from the insertion pipe, and the threaded head passes through the arc-shaped opening.

[0013] Furthermore, a T-shaped plate is installed on the horizontal part of the connecting seat, and the end of the T-shaped plate away from the connecting seat is connected to the box cover.

[0014] Furthermore, a through-hole is provided at the center of the upper surface of the support plate, the insertion tube is inserted into the through-hole, and an elongated oval opening is provided on the upper surface of the support plate, which is located between the arc-shaped opening and the through-hole.

[0015] Furthermore, an upper connecting ring is installed at the exhaust port at the bottom of the vacuum pump impeller chamber, and a lower connecting ring that mates with the upper connecting ring is installed at the upper end of the insertion pipe. Multiple small holes are evenly provided at the part of the support plate that overlaps with the lower connecting ring, and the screw passes through the small holes and the lower connecting ring and is connected to the upper connecting ring.

[0016] Furthermore, the box body has a rectangular structure, and adjustable feet and brake wheels are installed at the four corners of the bottom of the box body, with the adjustable feet and brake wheels arranged in a staggered manner.

[0017] Furthermore, two support bars are installed at the bottom of the vacuum pump, and the support bars are installed at the bottom of the housing.

[0018] The beneficial effects of this utility model are:

[0019] 1. Install a silencer at the exhaust port at the bottom of the vacuum pump rotor chamber, and install the silencer in the space formed by the cover and the housing. Then install sound-absorbing cotton in the space formed by the cover and the housing to improve the noise reduction effect.

[0020] 2. Insert the insert pipe into the connecting pipe. At this time, the sealing sleeve forms a sealed insertion relationship between the insert pipe and the connecting pipe. Then, after the threaded head passes through the arc-shaped opening, tighten the nut. The nut and the threaded head cooperate with each other, so that the relative positions of the support plate, connecting seat, insert pipe and cover remain unchanged. This completes the assembly of the cover and vacuum pump rotor chamber. The installation can be completed without bending over or turning the vacuum pump rotor chamber. Compared with the traditional bolt connection, the installation time is shortened and the labor intensity is reduced.

[0021] 3. Place the support plate onto the insertion pipe, and use screws to pass through the support plate and the lower connecting ring and then thread them to the upper connecting ring to complete the assembly of the support plate, insertion pipe and vacuum pump rotor chamber. This achieves the function of using a set of screws to limit the relative positions of the support plate, insertion pipe and vacuum pump rotor chamber, reducing the amount of screws used.

[0022] 4. The support plate is fixed to the connecting seat by threaded head and nut. The arc-shaped opening design allows for fine adjustment of the position of the support plate, which facilitates fine adjustment of the placement of the vacuum pump and improves the assembly error tolerance. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of a vacuum pump noise reduction structure according to the present invention;

[0025] Figure 2 This is another perspective view of a vacuum pump noise reduction structure according to the present invention;

[0026] Figure 3 This is a schematic diagram of the assembly of the silencer, housing cover and vacuum pump rotor chamber in a vacuum pump noise reduction structure according to this utility model;

[0027] Figure 4 This is an exploded assembly diagram of the insertion pipe, support plate, and silencer in a vacuum pump noise reduction structure of this utility model.

[0028] In the picture:

[0029] 1. Vacuum pump rotor chamber; 11. Insertion pipe; 12. Upper connecting ring; 13. Lower connecting ring;

[0030] 2. Lid; 21. Body; 22. Adjustable feet; 23. Brake wheel;

[0031] 3. Support plate; 31. Arc-shaped opening; 32. Oblong opening; 33. Through opening;

[0032] 4. Connecting seat; 41. Nut; 42. T-plate; 43. Threaded head;

[0033] 5. Muffler; 51. Connecting pipe; 52. Support bar; 53. Connecting pipe; 54. Sealing sleeve. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0035] Please see Figures 1-4This utility model provides a technical solution: a vacuum pump noise reduction structure, including a vacuum pump rotor chamber 1. A detachable insertion pipe 11 is installed at the exhaust port at the bottom of the vacuum pump rotor chamber 1. A support plate 3 is sleeved on the insertion pipe 11 and connected to the insertion pipe 11 by screws. Both ends of the support plate 3 extend to the outside of the vacuum pump rotor chamber 1. A through-hole 33 is opened at the middle of the upper surface of the support plate 3, and the insertion pipe 11 is inserted into the through-hole 33. An elongated oval opening 32 is opened on the upper surface of the support plate 3, which is located between the arc-shaped opening 31 and the through-hole 33. The design of the elongated oval opening 32 reduces the amount of material used in the production of the support plate 3. An upper connecting ring 12 is installed at the bottom exhaust port, and a lower connecting ring 13 that mates with the upper connecting ring 12 is installed at the upper end of the insertion pipe 11. Multiple small holes are evenly provided at the overlapping part of the support plate 3 and the lower connecting ring 13. After the screw passes through the small hole and the lower connecting ring 13, it is connected to the upper connecting ring 12, so that the support plate 3 is fitted on the insertion pipe 11. The screw passes through the support plate 3 and the lower connecting ring 13 and is threadedly connected to the upper connecting ring 12, thus completing the assembly of the support plate 3, the insertion pipe 11 and the vacuum pump rotor chamber 1. This achieves the function of using a set of screws to limit the relative position of the support plate 3, the insertion pipe 11 and the vacuum pump rotor chamber 1, reducing the amount of screws used.

[0036] See Figures 1-4 The cover 2 is located on the lower side of the vacuum pump rotor chamber 1. The box body 21 is installed on the lower surface of the cover 2. The silencer 5 is installed inside the box body 21. Two support strips 52 are installed at the bottom of the vacuum pump rotor chamber 1, so that the support strips 52 are installed at the bottom of the box body 21 to complete the stable installation of the silencer 5. The air inlet end of the silencer 5 is equipped with a connecting pipe 53. The end of the connecting pipe 53 away from the silencer 5 passes through the cover 2 and extends to the upper side of the cover 2. The box body 21 has a rectangular structure. Adjustable feet 22 and brake wheels 23 are installed at the four corners of the bottom of the box body 21. The adjustable feet 22 and brake wheels 23 are staggered. The silencer 5 is installed at the exhaust port at the bottom of the vacuum pump rotor chamber 1 and is installed in the space formed by the cover 2 and the box body 21. Then, sound-absorbing cotton is installed in the space formed by the cover 2 and the box body 21 to improve the noise reduction effect.

[0037] See Figures 1-4A sealing sleeve 54 is pasted inside the connecting pipe 53. The lower end of the insert pipe 11 is inserted into the sealing sleeve 54. A connecting pipe 51 is installed at the outlet end of the muffler 5. The end of the connecting pipe 51 away from the muffler 5 extends to the outside of the housing 21. Two connecting seats 4 are provided, and the two connecting seats 4 are respectively installed on two parallel sides of the housing cover 2. The connecting seats 4 have an L-shaped structure. A threaded head 43 is installed on the top of the connecting seat 4. A nut 41 is threaded onto the threaded head 43. The upper end of the threaded head 43 passes through the support plate 3. The nut 41 is located on the upper side of the support plate 3, so that... Insert pipe 11 is inserted into connecting pipe 53. At this time, sealing sleeve 54 makes the insert pipe 11 and connecting pipe 53 form a sealed insertion relationship. Then, threaded head 43 passes through arc-shaped opening 31 and nut 41 is screwed on. Nut 41 and threaded head 43 cooperate with each other to keep the relative positions of support plate 3, connecting seat 4, insert pipe 11 and cover 2 unchanged, thus completing the assembly of cover 2 and vacuum pump rotor chamber 1. Installation can be completed without bending over or flipping vacuum pump rotor chamber 1, which shortens the installation time and reduces labor intensity compared with traditional bolt connection.

[0038] See Figures 1-4 A T-shaped plate 42 is installed on the horizontal part of the connecting seat 4. The end of the T-shaped plate 42 away from the connecting seat 4 is connected to the cover 2. The T-shaped plate 42 increases the connection range between the connecting seat 4 and the cover 2. An arc-shaped opening 31 is opened on the side of the upper surface of the support plate 3 away from the insertion pipe 11. The threaded head 43 passes through the arc-shaped opening 31. The support plate 3 is fixed to the connecting seat 4 by the threaded head 43 and the nut 41. The arc-shaped opening 31 design allows the support plate 3 to be finely adjusted, which is convenient for fine-tuning the placement of the vacuum pump and improving the assembly error tolerance.

[0039] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise reduction structure for a vacuum pump, characterized in that... include: The vacuum pump rotor chamber (1) has a detachable connector (11) installed at the exhaust port at its bottom. The cover (2) is located on the lower side of the vacuum pump rotor chamber (1), and the box body (21) is installed on the lower surface of the cover (2). A muffler (5) is installed inside the housing (21). A connecting pipe (53) is installed at the air inlet end of the muffler (5). The end of the connecting pipe (53) away from the muffler (5) passes through the housing cover (2) and extends to the upper side of the housing cover (2). A sealing sleeve (54) is pasted inside the connecting pipe (53). The lower end of the insertion pipe (11) is inserted into the sealing sleeve (54). A connecting pipe (51) is installed at the air outlet end of the muffler (5). The end of the connecting pipe (51) away from the muffler (5) extends to the outside of the housing (21). The support plate (3) is fitted onto the insertion pipe (11) and connected to the insertion pipe (11) by screws. Both ends of the support plate (3) extend to the outside of the vacuum pump rotor chamber (1). Both ends of the support plate (3) are connected to the box cover (2) by connectors.

2. The vacuum pump noise reduction structure according to claim 1, characterized in that: The connector includes: There are two connecting seats (4), which are respectively installed on two parallel sides of the box cover (2). The connecting seats (4) are L-shaped. A threaded head (43) is installed on the top of the connecting seat (4). A nut (41) is threaded onto the threaded head (43). The upper end of the threaded head (43) passes through the support plate (3). The nut (41) is located on the upper side of the support plate (3).

3. The vacuum pump noise reduction structure according to claim 2, characterized in that: An arc-shaped opening (31) is provided on the side of the upper surface of the support plate (3) away from the insertion pipe (11), and the threaded head (43) passes through the arc-shaped opening (31).

4. The vacuum pump noise reduction structure according to claim 2, characterized in that: A T-shaped plate (42) is installed on the horizontal part of the connecting seat (4), and the end of the T-shaped plate (42) away from the connecting seat (4) is connected to the box cover (2).

5. The vacuum pump noise reduction structure according to claim 3, characterized in that: The support plate (3) has a through opening (33) in the middle of its upper surface. The insertion pipe (11) is inserted into the through opening (33). The support plate (3) has an elongated oval opening (32) on its upper surface. The elongated oval opening (32) is located between the arc-shaped opening (31) and the through opening (33).

6. The vacuum pump noise reduction structure according to claim 1, characterized in that: An upper connecting ring (12) is installed at the exhaust port at the bottom of the vacuum pump rotor chamber (1). A lower connecting ring (13) that cooperates with the upper connecting ring (12) is installed at the upper end of the insertion pipe (11). Multiple small holes are evenly opened at the part of the support plate (3) that overlaps with the lower connecting ring (13). The screw passes through the small holes and the lower connecting ring (13) and is connected to the upper connecting ring (12).

7. The vacuum pump noise reduction structure according to claim 1, characterized in that: The box (21) is a rectangular structure. Adjustable feet (22) and brake wheels (23) are installed at the four corners of the bottom of the box (21). The adjustable feet (22) and brake wheels (23) are arranged in a staggered manner.

8. The vacuum pump noise reduction structure according to claim 1, characterized in that: Two support bars (52) are installed at the bottom of the vacuum pump rotor chamber (1), and the support bars (52) are installed at the bottom of the housing (21).

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