Roots blower filter vat with noise reduction function

Abstract

The utility model relates to the technical field of filter barrels, in particular to a Roots blower filter barrel with a noise reduction function, which comprises a shell, the device further comprises a connecting pipe and a filtering assembly. An air inlet pipe is fixed at the upper end of the shell, one side of the shell is fixedly connected with a fan air suction pipe, the outer side of the shell is fixedly connected with a pressure release valve, one side of the shell is provided with a filter assembly, one side of the fan air suction pipe is provided with a connecting pipe, and the inner side of the connecting pipe is provided with a bolt; according to the device, the air suction opening of the Roots blower is connected with the connecting pipe, the Roots blower is started, air enters the shell through the air inlet pipe and then enters the drawer, the air entering the drawer is filtered through the filter element, impurities in the air are left in the drawer, and the air enters the connecting pipe through the air suction pipe of the Roots blower, so that the air is purified. And through the round holes formed in the first sound absorption pipe and the second sound absorption pipe, sound generated by violent friction and collision between airflow and the device is absorbed, interference of the noise to the working environment is reduced, and the stability and reliability of the fan structure are improved.

Description

Technical Field

[0001] This utility model relates to the field of filter barrel technology, and in particular to a Roots blower filter barrel with noise reduction function. Background Technology

[0002] Roots blowers, also known as Roots pumps, are a type of positive displacement rotary blower. They are rotary compressors that use two or three lobe-shaped rotors moving relative to each other within a cylinder to compress and transport gas. These blowers have a simple structure, are easy to manufacture, and are suitable for gas transport and pressurization in low-pressure applications. They can also be used as vacuum pumps.

[0003] Existing Roots blower filter cartridges, with their precise filtration structure, can effectively intercept impurities and dust in the air during blower operation, making the air entering the blower cleaner. This provides reliable protection for the internal components of the blower, significantly improves the blower's operating efficiency, and extends its service life.

[0004] However, when air enters the fan at a certain speed, turbulence is created at the inlet. This causes intense friction and collisions between the airflow and the fan casing and inlet components, generating significant noise. This noise not only interferes with the surrounding working environment, affecting the operators' work performance and physical and mental health, but also, due to prolonged exposure to high noise levels, may pose a potential threat to the fan's structural stability, potentially leading to loosening of certain components and indirectly affecting the fan's performance and reliability. Utility Model Content

[0005] This addresses the technical problem of existing Roots blowers where, when air enters the blower at a certain speed, there is intense friction and collision between the airflow and the blower casing and inlet components, resulting in significant noise.

[0006] The technical solution of this utility model is as follows: a Roots blower filter barrel with noise reduction function, including an outer shell; it also includes a connecting pipe and a filter assembly; an air inlet pipe is fixed at the upper end of the outer shell, a blower suction pipe is fixedly connected to one side of the outer shell, a pressure relief valve is fixedly connected to the outer side of the outer shell, a filter assembly is provided on one side of the outer shell, a connecting pipe is provided on one side of the blower suction pipe, a bolt is provided on the inner side of the connecting pipe, a nut is threaded on the outer side of the bolt, the blower suction pipe and the connecting pipe are fixed by bolts and nuts, a sealing ring for improving the sealing performance of the pipe is provided between the connecting pipe and the blower suction pipe, a first sound-absorbing pipe is fixedly connected to the inner side of the connecting pipe, a sound-absorbing connecting plate is fixedly connected to the inner side of the first sound-absorbing pipe, and a second sound-absorbing pipe is fixedly connected to the inner side of the sound-absorbing connecting plate.

[0007] Preferably, both the first and second sound-absorbing tubes have round holes for absorbing sound and reducing noise.

[0008] Preferably, multiple sets of bolts and nuts are provided, and multiple sets of bolts and nuts are arranged in a circumferential array on the connecting pipe.

[0009] Preferably, the filter assembly includes a partition, a partition fixedly connected to the inner side of the housing, a drawer slidably connected to the inner side of the housing, a filter fixing frame fixedly connected to the drawer, a filter element slidably connected to the inner side of the filter fixing frame, a limit block fixedly connected to the outer side of the housing, a spring fixedly connected to the inner side of the limit block, a movable plate fixedly connected to one side of the spring, a slide rod fixedly connected to one side of the movable plate, and a pressure plate rotatably connected to the outer side of the slide rod.

[0010] Preferably, the limiting block has a groove, and the movable plate is slidably connected to the inner side of the limiting block through the groove.

[0011] Preferably, the limiting block has a second groove, through which the sliding rod passes through the limiting block.

[0012] Preferably, two sets of limiting blocks, springs, movable plates, slide rods, and pressure plates are provided, with the two sets of limiting blocks, springs, movable plates, slide rods, and pressure plates symmetrically arranged on the outer side of the housing.

[0013] The beneficial effects of this utility model are as follows: Compared with traditional Roots blowers, when air enters the blower at a certain speed, there is a situation where the airflow and the blower casing and air inlet components experience severe friction and collision, resulting in significant noise. This device connects the Roots blower's air inlet to the connecting pipe. When the Roots blower is started, air enters the outer casing through the air inlet pipe, and then enters the drawer. The air entering the drawer is filtered by the filter element, leaving impurities in the drawer. The air then enters the connecting pipe through the blower's air inlet pipe, and through the round holes opened on the first and second sound-absorbing pipes, the sound generated by the severe friction and collision between the airflow and the device is absorbed, reducing noise interference with the working environment and improving the stability and reliability of the blower structure. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a cross-sectional view of the present invention.

[0016] Figure 3 The diagram shown is a cross-sectional view of the assembly of the fan suction pipe, connecting pipe, bolt, nut, sealing ring, first sound-absorbing pipe, second sound-absorbing pipe and sound-absorbing connecting plate of this utility model.

[0017] Figure 4 The diagram shown is a schematic representation of the combined structure of the drawer, filter holder, and filter element of this utility model.

[0018] Figure 5The diagram shown is a cross-sectional view of the combined structure of the outer shell, drawer, limiting block, spring, movable plate, slide rod and pressure plate of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Outer casing; 2. Air inlet pipe; 3. Fan suction pipe; 4. Pressure relief valve; 501. Connecting pipe; 502. Bolt; 503. Nut; 504. Sealing ring; 505. First sound-absorbing pipe; 506. Second sound-absorbing pipe; 507. Sound-absorbing connecting plate; 601. Partition; 602. Drawer; 603. Filter fixing bracket; 604. Filter element; 605. Limiting block; 606. Spring; 607. Movable plate; 608. Slide rod; 609. Pressure plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5 This utility model provides an embodiment of a Roots blower filter canister with noise reduction function, comprising a shell 1; a connecting pipe 501 and a filter assembly; an air inlet pipe 2 is fixed to the upper end of the shell 1, a blower suction pipe 3 is fixedly connected to one side of the shell 1, a pressure relief valve 4 is fixedly connected to the outer side of the shell 1, a filter assembly is provided on one side of the shell 1, a connecting pipe 501 is provided on one side of the blower suction pipe 3, a bolt 502 is provided on the inner side of the connecting pipe 501, a nut 503 is threadedly connected to the outer side of the bolt 502, the blower suction pipe 3 and the connecting pipe 501 are fixed by the bolt 502 and the nut 503, a sealing ring 504 for improving the pipe sealing is provided between the connecting pipe 501 and the blower suction pipe 3, a first sound-absorbing pipe 505 is fixedly connected to the inner side of the connecting pipe 501, a sound-absorbing connecting plate 507 is fixedly connected to the inner side of the first sound-absorbing pipe 505, and a second sound-absorbing pipe is fixedly connected to the inner side of the sound-absorbing connecting plate 507. 506. Both the first and second sound-absorbing pipes 505 and 506 have round holes for absorbing sound and reducing noise. Multiple sets of bolts 502 and nuts 503 are arranged in a circumferential array on the connecting pipe 501. The multiple sets of bolts 502 and nuts 503 make the connecting pipe 501 and the fan suction pipe 3 more secure. The Roots blower suction port is connected to the connecting pipe 501. The Roots blower is started, and air enters the outer casing 1 through the air inlet pipe 2, and then enters the drawer 602. The air entering the drawer 602 is filtered by the filter element 604, leaving impurities in the drawer 602. The air enters the connecting pipe 501 through the fan suction pipe 3, and through the round holes on the first and second sound-absorbing pipes 505 and 506, it absorbs the sound generated by the violent friction and collision between the airflow and the device, thus reducing noise.

[0022] Please see Figure 2 , Figure 4 , Figure 5In this embodiment, the filter assembly includes a partition 601. The partition 601 is fixedly connected to the inner side of the outer shell 1. A drawer 602 is slidably connected to the inner side of the outer shell 1. A filter fixing bracket 603 is fixedly connected to the drawer 602. A filter element 604 is slidably connected to the inner side of the filter fixing bracket 603. A limiting block 605 is fixedly connected to the outer side of the outer shell 1. A spring 606 is fixedly connected to the inner side of the limiting block 605. A movable plate 607 is fixedly connected to one side of the spring 606. A slide rod 608 is fixedly connected to one side of the movable plate 607. A pressure plate 609 is rotatably connected to the outer side of the slide rod 608. A groove is provided on the limiting block 605. The movable plate 607 is slidably connected to the inner side of the limiting block 605 through the groove. The groove on the limiting block 605 allows the movable plate 607 to be slidably connected to the limiting block 605. The inner side of the drawer 607 is designed to guide and limit the movement of the movable plate 607. A second groove is provided on the limiting block 605, through which the slide rod 608 passes. The sliding plate 607 slides, causing the slide rod 608 to slide. Two sets of limiting blocks 605, springs 606, movable plates 607, slide rods 608, and pressure plates 609 are provided. The two sets of limiting blocks 605, springs 606, movable plates 607, slide rods 608, and pressure plates 609 are symmetrically arranged on the outer side of the outer shell 1. By providing two sets of limiting blocks 605, springs 606, movable plates 607, slide rods 608, and pressure plates 609, the drawer 602 is fixed on both sides, making the drawer 602 more secure.

[0023] During operation, connect the Roots blower's air intake to the connecting pipe 501, start the Roots blower, and air enters the outer casing 1 through the air inlet pipe 2, then enters the drawer 602. The air entering the drawer 602 is filtered by the filter element 604, leaving impurities in the drawer 602. The air then enters the connecting pipe 501 through the blower's air intake pipe 3, passing through the round holes on the first sound-absorbing pipe 505 and the second sound-absorbing pipe 506 to absorb the sound generated by the intense friction and collision between the airflow and the device, reducing noise. When it is necessary to replace the filter element 604 and clean the dust in the drawer 602, pull the pressure plate 609 and then rotate it to disengage it from the surface of the drawer 602, thus releasing the fixed limit on the drawer 602. Then pull the drawer 602. 02. Remove the outer shell 1, then empty the dust and impurities from drawer 602 to facilitate cleaning. Pull the filter element 604 to remove it from the filter holder 603 for replacement. Insert the new filter element into the filter holder 603 to complete the replacement. Then insert drawer 602 into outer shell 1. Pull the pressure plate 609, which moves the slide rod 608. The slide rod 608 moves the movable plate 607, which presses against the spring 606. Then rotate the pressure plate 609 so that it is positioned on the surface of drawer 602. Release the pressure plate 609, and the spring 606 moves the movable plate 607. The movable plate 607 moves the slide rod 608, which presses the pressure plate 609 against the surface of drawer 602, thus limiting and fixing drawer 602.

[0024] Through the above steps, the Roots blower's air inlet is connected to the connecting pipe 501. The Roots blower is started, and air enters the outer casing 1 through the air inlet pipe 2, and then enters the drawer 602. The air entering the drawer 602 is filtered by the filter element 604, so that impurities in the air remain in the drawer 602. The air enters the connecting pipe 501 through the blower's air inlet pipe 3, and through the round holes opened on the first sound-absorbing pipe 505 and the second sound-absorbing pipe 506, the sound generated by the violent friction and collision between the airflow and the device is absorbed, reducing noise.

Claims

1. A Roots blower filter cartridge with noise reduction function, comprising an outer shell (1); characterized in that: It also includes a connecting pipe (501) and a filter assembly; an air inlet pipe (2) is fixed to the upper end of the outer shell (1), a fan suction pipe (3) is fixedly connected to one side of the outer shell (1), a pressure relief valve (4) is fixedly connected to the outside of the outer shell (1), a filter assembly is provided on one side of the outer shell (1), a connecting pipe (501) is provided on one side of the fan suction pipe (3), a bolt (502) is provided on the inside of the connecting pipe (501), and a nut (503) is threadedly connected to the outside of the bolt (502). The pipe (3) and the connecting pipe (501) are fixed by bolts (502) and nuts (503). A sealing ring (504) for improving the sealing performance of the pipe is provided between the connecting pipe (501) and the fan suction pipe (3). A first sound-absorbing pipe (505) is fixedly connected to the inside of the connecting pipe (501). A sound-absorbing connecting plate (507) is fixedly connected to the inside of the first sound-absorbing pipe (505). A second sound-absorbing pipe (506) is fixedly connected to the inside of the sound-absorbing connecting plate (507).

2. The Roots blower filter cartridge with noise reduction function according to claim 1, characterized in that: Both the first sound-absorbing tube (505) and the second sound-absorbing tube (506) have round holes for absorbing sound and reducing noise.

3. The Roots blower filter cartridge with noise reduction function according to claim 1, characterized in that: Multiple sets of bolts (502) and nuts (503) are provided, and multiple sets of bolts (502) and nuts (503) are arranged in a circumferential array on the connecting pipe (501).

4. The Roots blower filter cartridge with noise reduction function according to claim 1, characterized in that: The filter assembly includes a partition (601), a partition (601) is fixedly connected to the inside of the outer shell (1), a drawer (602) is slidably connected to the inside of the outer shell (1), a filter fixing bracket (603) is fixedly connected to the drawer (602), a filter element (604) is slidably connected to the inside of the filter fixing bracket (603), a limit block (605) is fixedly connected to the outside of the outer shell (1), a spring (606) is fixedly connected to the inside of the limit block (605), a movable plate (607) is fixedly connected to one side of the spring (606), a slide rod (608) is fixedly connected to one side of the movable plate (607), and a pressure plate (609) is rotatably connected to the outside of the slide rod (608).

5. The Roots blower filter cartridge with noise reduction function according to claim 4, characterized in that: A groove is provided on the limiting block (605), and the movable plate (607) is slidably connected to the inner side of the limiting block (605) through the groove.

6. The Roots blower filter cartridge with noise reduction function according to claim 4, characterized in that: The limiting block (605) has a second groove, and the slide rod (608) is set through the limiting block (605) via the second groove.

7. The Roots blower filter cartridge with noise reduction function according to claim 4, characterized in that: The limiting block (605), spring (606), movable plate (607), slide bar (608) and pressure plate (609) are all provided in two sets. The two sets of limiting blocks (605), springs (606), movable plates (607), slide bars (608) and pressure plates (609) are symmetrically arranged on the outside of the outer shell (1).

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