Multi-cavity air compression pump ventilation box

Abstract

The utility model belongs to the technical field of air compression pumps, and particularly relates to a multi-cavity air compression pump ventilation box which comprises a shell, an air inlet is fixedly connected to the side wall of the shell, a cover plate is assembled on the top of the shell, a layering plate is fixedly connected to the inner wall of the shell, and a hollow connecting column is fixedly connected to the bottom face of an inner cavity of the shell. The hollow connecting column penetrates through the layering plate, a first cavity is formed in the lower side of the layering plate, two first air holes are formed in the position, close to the right side, of the top face of the layering plate, two baffles are fixedly connected to the positions, located at the top of the layering plate, of the side wall of the hollow connecting column, a second cavity is formed in the right sides of the baffles, and a third cavity is formed in the left sides of the baffles; and the second chamber and the third chamber are communicated through a gap between the baffle and the shell. By means of the design of the multiple cavities of different sizes, noise of different frequencies can be reduced and attenuated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air compression pump noise reduction technical field, specifically relates to a kind of multi-chamber air compression pump ventilation box. BACKGROUND

[0002] Air compression pump is generally the device that mechanical energy is converted into gas pressure energy, it is also compressed air pressure generating device;It is more widely used in industrial production, air compression pump is in the pipeline conveying when compressed gas, airflow accelerates, gas will produce airflow noise in high-speed flow, the kinetic energy of gas increases, and the turbulent noise generated also increases;In addition, in the pipe portion that suddenly expands or shrinks, airflow will form vortex, cause local pressure and speed instability, and also produce noise.

[0003] And the noise reduction structure for compressed gas in the prior art, generally adopts soundproof material or optimizes pipeline layout to reduce airflow noise, but, this way can only reduce airflow noise in a very small extent, when the pipeline connected on air compression pump is more, noise is obviously very large, cannot effectively carry out noise reduction treatment to different frequency noise, thereby not conducive to the staff operation in production environment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of multi-chamber air compression pump ventilation box, can be designed by multiple different size chambers, and different frequency noise can be noise reduction.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of multi-chamber air compression pump ventilation box, including shell, shell side wall air inlet, shell top is equipped with cover plate, shell interior is provided with layered board, layered board is divided into upper cavity and lower cavity in shell, hollow connecting column is provided in shell, hollow connecting column extends from the bottom surface of shell interior upwards and penetrates layered board, hollow connecting column divides second chamber and third chamber in upper cavity, second chamber and third chamber are communicated by the gap between the outer side wall of hollow connecting column and the inner wall of shell, first air hole is opened in second chamber in layered board, second air hole is opened in third chamber in layered board, first chamber and fourth chamber are separated by the layered board of first chamber in the outer side wall of hollow connecting column and the inner wall of shell, air inlet is communicated with first chamber, first air hole is communicated first chamber and second chamber, second air hole is communicated third chamber and fourth chamber, air passage is opened in the fourth chamber at the bottom end surface of hollow connecting column, air passage is communicated fourth chamber and the inner cavity in hollow connecting column, the inner cavity of hollow connecting column is fifth chamber, the top surface of cover plate is equipped with air outlet hole, hollow connecting column top and air outlet hole are communicated.

[0007] Further, the outer wall of the hollow connecting column is fixedly connected with two baffles in the upper cavity.

[0008] Further, the top end face of the shell is equipped with a sealing strip, and the bottom face of the cover plate is provided with a sealing groove matched with the sealing strip.

[0009] Further, the top face of the shell and the cover plate is provided with a mounting hole near the corner, and a bolt is mounted in the two mounting holes on the same axis.

[0010] Further, the side wall of the baffle away from the hollow connecting column is inclined from bottom to top, and the airflow channel is formed between the baffle and the inner wall of the shell.

[0011] Further, the third cavity can be further provided with a second sub-cavity partition plate, the second sub-cavity partition plate divides the third cavity into a first sub-cavity and a second sub-cavity, the second air hole is located in the second sub-cavity, the second sub-cavity partition plate is provided with a second sub-cavity partition plate air port, and the airflow flows from the first sub-cavity to the second sub-cavity through the second sub-cavity partition plate air port.

[0012] Further, the sub-cavity layering plate is arc-shaped.

[0013] The technical effects achieved by the utility model are:

[0014] The multi-cavity air compression pump air exchange box of the utility model is achieved by the mutual cooperation between the shell, the cover plate, the layering plate, the hollow connecting column and the baffle, adopts a multi-cavity design with different sizes, can introduce gas into multiple cavities, and the airflow flowing through the cavities can collide to achieve the effect of noise reduction and sound elimination. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the perspective view of the utility model embodiment

[0016] Figure 2 is the internal structure schematic view of the shell of the utility model embodiment

[0017] Figure 3 is the distribution structure schematic view of the first cavity and the fourth cavity of the utility model embodiment

[0018] Figure 4 is the distribution structure schematic view of the airway of the utility model embodiment

[0019] Figure 5 is the front view of the utility model embodiment Figure 3

[0020] Figure 6 ​is a structure schematic view of the airway and the fifth chamber of the utility model;

[0021] Figure 7 is a back structure schematic view of the cover plate.

[0022] Figure 8 is a structure schematic view of the utility model adding the second sub-chamber partition plate in the third chamber.

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 1, shell; 2, air inlet; 3, cover plate; 4, layered plate; 5, first chamber; 6, first air hole; 7, second chamber; 8, hollow connecting column; 9, baffle; 10, third chamber; 11, second air hole; 12, fourth chamber; 13, airway; 14, fifth chamber; 15, air outlet; 16, sealing strip; 17, sealing groove; 18, bolt; 19, first sub-chamber partition plate; 20, second sub-chamber partition plate; 21, three-chamber first sub-chamber; 22, three-chamber second sub-chamber; 23, second sub-chamber partition plate air port. DETAILED DESCRIPTION

[0025] In order to make the purpose and the advantage of the utility more clear and obvious, the utility is specifically explained below by combining with the embodiment. It should be understood that the following text is only used to describe one or several specific implementation modes of the utility, and does not strictly limit the protection scope specifically requested by the utility.

[0026] As Figures 1-7As shown in the figure, a multi-chamber air compression pump ventilation box comprises a shell 1, the shell 1 is fixedly connected with an air inlet 2 on the side wall, the shell 1 is assembled with a cover plate 3 on the top, the shell 1 is internally provided with a transversely arranged layered plate 4, the layered plate 4 separates the shell 1 into an upper cavity and a lower cavity, the shell 1 is further internally provided with a hollow connecting column 8, the hollow connecting column 8 extends upward from the bottom surface in the shell 1 and penetrates the layered plate 4, the hollow connecting column 8 separates the upper cavity into a second chamber 7 and a third chamber 10 in the upper cavity, the hollow connecting column 8 has a gap between the outer side wall of the upper cavity and the inner side wall of the shell 1, and airflow flows from the second chamber 7 to the third chamber 10 through the gap; further, two baffles 9 can be fixedly connected in the gap formed between the outer side wall of the upper cavity and the inner side wall of the shell 1, and airflow flows through the gap between the baffles 9 and the inner side wall of the shell 1; the layered plate 4 is provided with a first air hole 6 in the second chamber 7, and the layered plate 4 is provided with a second air hole 11 in the third chamber 10, the second chamber 7 and the third chamber 10 are communicated through the gap between the baffles 9 and the shell 1, and the number of the first air hole 6 and the second air hole 11 can be one or more in the embodiment, which can be set according to the demand of air flow. The hollow connecting column 8 is connected with a first sub-cavity partition plate 19 between the side wall of the lower cavity and the shell 1, the first sub-cavity partition plate 19 separates the lower cavity into a first chamber 5 and a fourth chamber 12, the air inlet 2 is communicated with the first chamber 5, the first air hole 6 communicates the first chamber 5 with the second chamber 7, the second air hole 11 communicates the third chamber 10 with the fourth chamber 12, an air duct 13 is provided at the bottom of the hollow connecting column 8 in the fourth chamber 12, the air duct 13 communicates the fourth chamber 12 with the inner cavity of the hollow connecting column 8, the inner cavity of the hollow connecting column 8 is a fifth chamber 14, the top surface of the cover plate 3 is provided with an air outlet hole 15, and the top of the hollow connecting column 8 is communicated with the air outlet hole 15.

[0027] Further, the third chamber 10 can be further provided with a second sub-cavity partition plate 20, the second sub-cavity partition plate 20 separates the third chamber 10 into a three-chamber first sub-cavity 21 and a three-chamber second sub-cavity 22, the second air hole 6 is located in the three-chamber second sub-cavity 22, the second sub-cavity partition plate 20 is provided with a second sub-cavity partition plate air hole 23, and airflow flows from the three-chamber first sub-cavity 21 to the three-chamber second sub-cavity 22 through the second sub-cavity partition plate air hole 23.

[0028] As shown in the figures, Figure 1 and Figure 7 the top end surface of the shell 1 is assembled with a sealing strip 16, the bottom surface of the cover plate 3 is provided with a sealing groove 17, and the sealing strip 16 is matched with the sealing groove 17. By arranging the sealing strip 16 and the sealing groove 17, the sealing property between the shell 1 and the cover plate 3 can be improved, so that the phenomenon of gas leakage caused by excessive pressure in the shell 1 can be avoided.

[0029] As shown in the figure, Figure 1As shown, the housing 1 and the cover plate 3 top surface near the corner are provided with mounting holes, and the two mounting holes on the same axis are equipped with bolts 18. By using the connection mode of the bolt 18, the structure is simple, the assembly is convenient, and the later disassembly and maintenance are also convenient.

[0030] As shown in the drawings, the baffle 9 is provided with a plurality of gas flow channels, and the gas flow channels are formed between the baffle 9 and the inner wall of the housing 1. Figure 4 As shown, the side wall of the baffle 9 away from the hollow connecting column 8 is inclined from bottom to top, and the baffle 9 and the inner wall of the housing 1 form an air flow channel. The baffle 9 is used to communicate the second chamber 7 and the third chamber 10, so that the gas in the second chamber 7 enters the third chamber 10. When the gas passes through the gap between the baffle 9 and the housing 1, the gas collides with the baffle 9, which can reduce the noise of the air flow and achieve the effect of suppressing noise.

[0031] The working principle of the utility model is: when in use, the air inlet 2 needs to be connected with the pipeline on the air compressor pump, the gas enters the first chamber 5 through the air inlet 2, enters the second chamber 7 from the first gas hole 6 through the first chamber 5, enters the third chamber 10 through the gap of the baffle 9, enters the fourth chamber 12 through the second gas hole 11, enters the fifth chamber 14 through the air duct 13, and is discharged from the air outlet 15. The collision of the air flow in the chamber can reduce the noise. Because the size of the chamber is different, different frequency air flow noise can be eliminated and suppressed.

[0032] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements should be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A multi-chamber air compressor pump air exchange box, characterized in that: Includes a housing (1), an air inlet (2) on the side wall of the housing (1), a cover plate (3) fitted on the top of the housing (1), a layered plate (4) inside the housing (1), the layered plate (4) dividing the interior of the housing (1) into an upper cavity and a lower cavity, a hollow connecting column (8) inside the housing (1), the hollow connecting column (8) extending upward from the bottom surface inside the housing (1) and penetrating through the layered plate (4), the hollow connecting column (8) dividing the upper cavity into a second chamber (7) and a third chamber (10), the second chamber (7) and the third chamber (10) being connected by a gap between the outer wall of the hollow connecting column (8) and the inner wall of the housing (1), the layered plate (4) having a first air hole (6) in the second chamber (7), the layered plate (4) having a second air hole (11) in the third chamber (10), the hollow connecting column (6) 8) A first partition plate (19) is connected between the outer wall of the lower cavity and the inner wall of the shell (1). The first partition plate (19) divides the lower cavity into a first chamber (5) and a fourth chamber (12). The air inlet (2) is connected to the first chamber (5). The first air hole (6) is connected to the first chamber (5) and the second chamber (7). The second air hole (11) is connected to the third chamber (10) and the fourth chamber (12). An air passage (13) is opened at the bottom end face of the hollow connecting column (8) in the fourth chamber (12). The air passage (13) is connected to the inner cavity of the fourth chamber (12) and the inner cavity of the hollow connecting column (8). The inner cavity of the hollow connecting column (8) is the fifth chamber (14). An air outlet (15) is opened on the top surface of the cover plate (3). The top of the hollow connecting column (8) is connected to the air outlet (15).

2. The air exchange box for a multi-chamber air compressor pump according to claim 1, characterized in that: Furthermore, the outer wall of the hollow connecting column (8) is fixedly connected to two baffles (9) in the upper cavity, and the second chamber (7) and the third chamber (10) are connected through the gap between the baffles (9) and the inner wall of the shell (1).

3. The air exchange box for a multi-chamber air compressor pump according to claim 1, characterized in that: The top end face of the housing (1) is fitted with a sealing strip (16), and the bottom surface of the cover plate (3) is provided with a sealing groove (17), and the sealing strip (16) is adapted to the sealing groove (17).

4. The air exchange box for a multi-chamber air compressor pump according to claim 1, characterized in that: Mounting holes are provided on the top surfaces of the housing (1) and the cover plate (3) near the corners, and bolts (18) are installed in the two mounting holes located on the same axis.

5. The air exchange box for a multi-chamber air compressor pump according to claim 2, characterized in that: The side wall of the baffle (9) away from the hollow connecting column (8) is inclined from bottom to top, and an airflow channel is formed between the baffle (9) and the inner wall of the shell (1).

6. The air exchange box for a multi-chamber air compressor pump according to claim 1, characterized in that: A second partition plate (20) may be further provided in the third chamber (10). The second partition plate (20) divides the third chamber into a first sub-chamber and a second sub-chamber. The second air hole (11) is located in the second sub-chamber. The second partition plate has a second partition plate air port. The airflow flows from the first sub-chamber to the second sub-chamber through the second partition plate air port.

7. The air exchange box for a multi-chamber air compressor pump according to claim 1, characterized in that: The first cavity layer plate (19) is arc-shaped.

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