Air compression pump ventilation box with noise reduction structure

Abstract

The utility model mainly provides an air compression pump ventilation box with a silencing structure, which comprises a hollow cavity and a hollow cylinder which are arranged in a shell, the hollow cylinder divides the hollow cavity into a first chamber and a second chamber, and air flows from the first chamber to the second chamber through a gap between the hollow cylinder and the shell; an air inlet is formed in the side wall of the shell and communicates with an air inlet channel located in the second cavity, and the air inlet channel communicates with the first cavity from the second cavity. A gas flow outlet is formed in the position, located in the second cavity, of the bottom of the hollow cylinder, a gas outlet is formed in the top of the hollow cylinder, a third cavity is formed in the hollow cylinder, and gas enters the shell through the gas inlet, flows to the first cavity through the gas inlet channel and then flows to the second cavity through the gap. The airflow flows into a third cavity in the hollow cylinder from an airflow outlet and then flows out from an air outlet. By means of the multiple cavities and the bent air channels in the ventilation box, noise generated by airflow in the operation process of the air compression pump can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air compression pump noise reduction technical field, specifically related to a air compression pump air exchange box with sound attenuation structure. BACKGROUND

[0002] Air compression pump is generally the device of converting mechanical energy into gas pressure energy, also is the gas pressure generating device of compressed air, is more widely used in industrial production, air compression pump in the compressed gas is transported in the pipeline, airflow accelerates, gas will produce airflow noise in high speed flow, the kinetic energy of gas increases, the turbulent noise produced also increases, in addition, in the pipe part of sudden expansion or contraction, airflow will form vortex, cause local pressure and speed instability, also can produce noise.

[0003] And the sound attenuation structure of compressed gas in the prior art, generally adopt sound insulation material or optimize pipeline layout to reduce the noise of airflow, but, this kind of 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 big, cannot effectively carry out noise reduction processing to different frequency noise, thereby is not favorable to the staff operation in production environment. NEW CONTENT

[0004] The utility model relates to a air compression pump air exchange box with sound attenuation structure, including the shell, the hollow cavity is formed in the shell, the hollow cylinder is arranged in the hollow cavity, the hollow cylinder extends upwards from the bottom of the shell and divides the hollow cavity into first chamber and second chamber, the hollow cylinder has a gap with the inner wall of the shell, and the gas flows from the first chamber to the second chamber through the gap, an air inlet is arranged on the side wall of the shell, the air inlet is communicated with the air inlet channel in the second chamber, the air inlet channel passes through the second chamber to the first chamber, and a baffle is arranged on the air inlet channel to separate the air inlet channel from the second chamber, the position of the bottom of the hollow cylinder in the second chamber is provided with the airflow outlet, the top of the hollow cylinder is provided with the gas outlet, the third chamber is formed in the hollow cylinder, the gas enters the shell through the air inlet, flows to the first chamber through the air inlet channel, flows to the second chamber through the gap, flows into the third chamber in the hollow cylinder through the airflow outlet, and then flows out through the gas outlet.

[0005] Further, the first chamber is provided with a first sub-chamber baffle, the first sub-chamber baffle separates the first chamber into an upper sub-chamber and a lower sub-chamber, and the air inlet channel is communicated with the lower sub-chamber.

[0006] Further, the first sub-chamber baffle further has a first sub-chamber baffle side wall, the first sub-chamber baffle side wall is provided with a first sub-chamber air hole, and the gas flows from the lower sub-chamber to the upper sub-chamber through the first sub-chamber air hole.

[0007] Further, the first sub-cavity partition plate is further provided with a first sub-cavity gas hole, and gas flows from the lower sub-cavity of the first cavity to the upper sub-cavity of the first cavity through the first sub-cavity gas hole.

[0008] Further, the upper sub-cavity of the first cavity is further provided with at least one first cavity upper sub-cavity partition plate, the first cavity upper sub-cavity partition plate separates the upper sub-cavity of the first cavity into at least two sub-cavities, and the first cavity upper sub-cavity partition plate is provided with a sub-cavity through hole, so that the sub-cavities are communicated through the sub-cavity through hole.

[0009] Further, the second cavity has a second sub-cavity partition plate, the second sub-cavity partition plate separates the second cavity into an upper sub-cavity of the second cavity and a lower sub-cavity of the second cavity, the second sub-cavity partition plate is provided with a second sub-cavity gas hole, gas flows from the upper sub-cavity of the second cavity to the lower sub-cavity of the second cavity through the second sub-cavity gas hole, and the gas outlet is located in the lower sub-cavity of the second cavity.

[0010] Further, the upper sub-cavity of the second cavity is further provided with at least one second cavity upper sub-cavity partition plate, the second cavity upper sub-cavity partition plate separates the upper sub-cavity of the second cavity into at least two sub-cavities, and the second cavity upper sub-cavity partition plate is provided with a sub-cavity through hole, so that the sub-cavities are communicated through the sub-cavity through hole.

[0011] Further, the gap further comprises a side plate, and the side plate is arranged on the outer side wall of the hollow cylinder.

[0012] The utility model achieves the following technical effects:

[0013] The air compression pump air exchange box with the sound attenuation structure has the effects of reducing noise and attenuating sound by arranging multiple cavities, partition plates and through holes on the partition plates in the channel through which the gas flows, and by designing different sizes of cavities and gas holes, different frequency airflow noise can be eliminated and inhibited. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the air exchange box structure schematic view of the first embodiment of the utility model.

[0015] Figure 2 is another angle structure schematic view of the air exchange box of the first embodiment of the utility model.

[0016] Figure 3 is the air exchange box structure schematic view of the second embodiment of the utility model.

[0017] Figure 4 is another angle structure schematic view of the air exchange box of the second embodiment of the utility model.

[0018] Figure 5 is Figure 4 is the cross section schematic view along the line AA.

[0019] Figure 6 is another embodiment state structure schematic diagram of the second embodiment of the utility model.

[0020] Figure 7 is still another embodiment state structure schematic diagram of the second embodiment of the utility model.

[0021] Figure 8 is ventilation box structure schematic diagram of the third embodiment of the utility model.

[0022] Figure 9 is another embodiment state structure schematic diagram of the third embodiment of the utility model.

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

[0024] 1 shell

[0025] 10 hollow cavity

[0026] 11 first chamber

[0027] 110 first subcavity partition

[0028] 111 first chamber upper subcavity

[0029] 112 first chamber lower subcavity

[0030] 113 first subcavity air hole

[0031] 115 first subcavity partition side wall

[0032] 116 first chamber upper subcavity partition

[0033] 117 first chamber upper subcavity subcavity

[0034] 118 first chamber upper subcavity subcavity through hole

[0035] 12 second chamber

[0036] 120 second subcavity partition

[0037] 121 second chamber upper subcavity

[0038] 124 second chamber upper subcavity partition

[0039] 125 second chamber upper subcavity subcavity

[0040] 126 second chamber upper subcavity subcavity through hole

[0041] 2 hollow cylinder

[0042] 20 gap

[0043] 21 air outlet

[0044] 22 outlet

[0045] 24 side plate

[0046] 3 air inlet channel

[0047] 4 air inlet DETAILED DESCRIPTION

[0048] In order to make the purposes and advantages of the present utility more clear and apparent, the present utility will be specifically described below in conjunction with embodiments. It should be understood that the following description is merely used to describe one or several specific implementation manners of the present utility, and does not strictly limit the scope of protection specifically requested by the present utility.

[0049] The specific implementation manners of the present utility are provided below, please refer to Figure 1 and Figure 2 , which is a first embodiment of the present utility, mainly provides an air compression pump air exchange box with a sound attenuation structure, comprising a shell 1, a hollow cavity 10 is formed inside the shell 1, a hollow cylinder 2 is arranged in the hollow cavity, the hollow cylinder 2 extends upward from the bottom of the shell 1 and divides the hollow cavity 10 into a first chamber 11 and a second chamber 12, the hollow cylinder 2 has a gap 20 with the inner wall of the shell 1, and gas flows from the first chamber 11 to the second chamber 12 through the gap 20; an air inlet 4 is arranged on the side wall of the shell 1, the air inlet 4 is communicated with an air inlet channel 3 located in the second chamber 12, the air inlet channel 3 penetrates through the second chamber 12 to the first chamber 11, and a partition plate 30 is arranged on the air inlet channel 3 to separate the air inlet channel 3 from the second chamber 12; a gas flow outlet 21 is arranged at the position of the hollow cylinder 2 located in the second chamber 12, and an air outlet 22 is arranged at the top of the hollow cylinder 2, a third chamber is formed inside the hollow cylinder 2, gas enters the shell 1 through the air inlet 4, flows to the first chamber 11 through the air inlet channel 3, then flows to the second chamber 12 through the gap 20, flows into the third chamber inside the hollow cylinder 2 through the gas flow outlet 21, and then flows out through the air outlet 22.

[0050] Please refer to Figures 3-5 , which is a second embodiment of the present utility and a sectional view of the second embodiment of the present utility, a first sub-cavity partition plate 110 is arranged in the first chamber 11, the first sub-cavity partition plate 110 divides the first chamber 11 into a first chamber upper sub-cavity 111 and a first chamber lower sub-cavity 112, the air inlet channel 3 is communicated with the first chamber lower sub-cavity 112, a first sub-cavity gas hole 113 is further arranged on the first sub-cavity partition plate 110, gas flows from the first chamber lower sub-cavity 112 to the first chamber upper sub-cavity 111 through the first sub-cavity gas hole 113, and then flows to the second chamber 12 through the gaps 20 on both sides of the hollow cylinder 3.

[0051] Please refer to Figure 6In another state of the second embodiment of the utility model, the first sub-cavity partition plate 110 can also have a first sub-cavity partition plate side wall 115, a first sub-cavity gas hole 113 is formed in the first sub-cavity partition plate side wall 115, and the gas flows from the first cavity lower sub-cavity 112 to the first cavity upper sub-cavity 111 through the first sub-cavity gas hole 113. The structures of the first cavity lower sub-cavity 112 and the first cavity upper sub-cavity 111 can be seen from Figure 5 schematic view.

[0052] Please refer to Figure 7 In the second embodiment, the first cavity upper sub-cavity 111 is further provided with at least one first cavity upper sub-cavity partition plate 116, the first cavity upper sub-cavity partition plate 116 divides the first cavity upper sub-cavity 111 into at least two sub-cavities 117, the first cavity upper sub-cavity partition plate 116 is provided with a first cavity upper sub-cavity sub-cavity through hole 118, so that the first cavity upper sub-cavities 117 are communicated through the first cavity upper sub-cavity sub-cavity through hole 118, after the gas flows from the first cavity lower sub-cavity 112 through the first sub-cavity gas hole 113, the gas flows to the first cavity upper sub-cavity 111 of the first cavity upper sub-cavity 117, and then flows through the first cavity upper sub-cavity sub-cavity through hole 118 and each first cavity upper sub-cavity 117, and then flows to the second cavity 12 through the gap 20.

[0053] Please refer to Figures 1-5 and Figure 8 For the third embodiment of the utility model, the second cavity 12 has a second sub-cavity partition plate 120, the second sub-cavity partition plate 120 divides the second cavity 12 into a second cavity upper sub-cavity 121 and a second cavity lower sub-cavity, the second sub-cavity partition plate 120 is provided with a second sub-cavity gas hole 121, the airflow outlet 21 at the bottom of the hollow cylinder 2 is located in the second cavity lower sub-cavity, the upper and lower layer structures of the second cavity upper sub-cavity 121 and the second cavity lower sub-cavity are the same as those of the first cavity upper sub-cavity 111 and the first cavity lower sub-cavity 112, after the gas flows from the first cavity 11 to the second cavity upper sub-cavity 121 of the second cavity 12 through the gap 20, the gas flows from the second cavity upper sub-cavity 121 to the second cavity lower sub-cavity through the second sub-cavity gas hole 121, and then flows from the second cavity lower sub-cavity to the airflow outlet 21 into the third cavity of the hollow cylinder 2. In this embodiment, the first cavity 11 can have the first sub-cavity partition plate 110 and the structure of the first sub-cavity 11 mentioned in the first embodiment or the second embodiment, or can not have the first sub-cavity partition plate 110 or other structures of the first sub-cavity 11, and the gas can flow directly to the first cavity 11 through the air inlet channel 3, and then flow to the second cavity upper sub-cavity 121 through the gap 20.

[0054] Please refer to Figure 9In the third embodiment, the second chamber upper sub-chamber 121 can further be provided with at least one second chamber upper sub-chamber partition 124, which divides the second chamber upper sub-chamber 121 into at least two sub-chambers 125, and the second chamber upper sub-chamber partition 124 is provided with sub-chamber through holes 126, so that the sub-chambers 125 are connected through the sub-chamber through holes 126.

[0055] Please refer to Figures 8-9 In the above embodiments, the gap 20 can further include a side plate 24, Figure 8 and Figure 9 The side plate 24 is provided with a schematic, and in other cases, the above-mentioned embodiments can be provided with a side plate 24, which is arranged on the outer side wall of the hollow cylinder 2. The side plate 24 is arranged to reduce the gap 20, thereby reducing the noise of the airflow.

[0056] It should be particularly noted that the structural features in the above embodiments are not intended to limit the scope of protection of the present application, and therefore the structural features presented in the embodiments can be combined and adjusted according to the specific design. For example, the first sub-chamber partition 110 and the second sub-chamber partition 120 can be simultaneously in a specific implementation state, and the first chamber upper sub-chamber partition 116 and the second chamber upper sub-chamber partition 124 can also be simultaneously in a specific implementation state, and are not limited to the specific embodiments presented.

[0057] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. An air compression pump ventilation box with a silencer structure, characterized in that: The invention comprises a shell, wherein a hollow cavity is formed inside the shell, wherein a hollow cylinder is disposed in the hollow cavity, wherein the hollow cylinder extends upward from the bottom of the shell and divides the hollow cavity into a first chamber and a second chamber, wherein a gap is formed between the hollow cylinder and an inner wall of the shell, and gas flows from the first chamber to the second chamber through the gap; An air inlet is provided on the side wall of the shell, and the air inlet is connected to the air inlet channel located in the second chamber. The air inlet channel runs through the second chamber to the first chamber, and a partition is provided on the air inlet channel to separate the air inlet channel from the second chamber; an air flow outlet is provided at the bottom of the hollow cylinder at the position of the second chamber, and an air outlet is provided at the top of the hollow cylinder, forming a third chamber inside the hollow cylinder, and the gas enters the shell through the air inlet, flows to the first chamber through the air inlet channel, and then flows to the second chamber through the gap, flows into the third chamber inside the hollow cylinder from the air flow outlet, and then flows out from the air outlet.

2. The air compression pump ventilation box with a sound-absorbing structure according to claim 1, characterized in that: The first chamber is provided with a first chamber partition, which divides the first chamber into a first chamber upper chamber and a first chamber lower chamber, and the air inlet channel is connected to the first chamber lower chamber.

3. The air compressor pump ventilation box with a sound-absorbing structure according to claim 2, characterized in that: The first chamber partition further has a first chamber partition side wall, and the first chamber partition side wall is provided with a first chamber air hole, and the gas flows from the first chamber lower chamber through the first chamber air hole to the first chamber upper chamber.

4. The air compression pump ventilation box with a sound-absorbing structure according to claim 2, characterized in that: The first sub-cavity partition plate is further provided with a first sub-cavity air hole, and gas flows from the lower sub-cavity of the first chamber through the first sub-cavity air hole to the upper sub-cavity of the first chamber.

5. The air compression pump ventilation box with a sound-absorbing structure according to claim 2, characterized in that: The first chamber upper chamber is further provided with at least one first chamber upper chamber partition, which divides the first chamber upper chamber into at least two sub-chambers. The first chamber upper chamber partition is provided with a sub-chamber through hole, so that the sub-chambers are connected through the sub-chamber through hole.

6. The air compressor pump ventilation box with a sound-absorbing structure according to claim 1, characterized in that: The second chamber has a second chamber partition, which divides the second chamber into a second chamber upper chamber and a second chamber lower chamber. The second chamber partition is provided with a second chamber air hole, and the gas flows from the second chamber upper chamber to the second chamber lower chamber through the second chamber air hole. The air flow outlet is located in the second chamber lower chamber.

7. The air compressor pump ventilation box with a sound-absorbing structure according to claim 6, characterized in that: The second chamber upper sub-chamber is further provided with at least one second chamber upper sub-chamber partition, which divides the second chamber upper sub-chamber into at least two sub-chambers, and the second chamber upper sub-chamber partition is provided with a sub-chamber through hole, so that the sub-chambers are connected through the sub-chamber through hole.

8. The air compressor pump ventilation box with a sound-absorbing structure according to claim 1, characterized in that: The gap further includes a side plate, and the side plate is arranged on the outer side wall of the hollow cylinder.

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