A low noise air bag pump

Abstract

The application discloses a low-noise air bag pump and belongs to the technical field of pump body equipment. The low-noise air bag pump comprises a soundproof cover, a pump body and an air valve. The pump body is provided with at least two check valves. The pump body is provided with a flow channel communicated with the check valves. The left and right ends of the pump body are provided with compression cavities communicated with ball valve cavities. Air bags are arranged in the compression cavities and are respectively connected with the threads at the left and right ends of the compression cavities. The left and right ends of the compression cavities are respectively connected with a first air pipe joint and a second air pipe joint. The first air pipe joint and the second air pipe joint are connected with the air valve through pipelines. The air valve is arranged on the side wall of the pump body. The soundproof cover is arranged on the outer periphery of the pump body. A cavity is formed between the soundproof cover and the pump body. The application weakens the noise and vibration source of the air bag pump, reduces the noise in the production of the air bag pump and improves the sound environment in the workshop production.

Description

Technical Field

[0001] This application relates to a low-noise airbag pump, belonging to the field of pump body equipment technology. Background Technology

[0002] The airbag pump is a positive displacement infusion pump. Due to its advantages such as high cleanliness, corrosion resistance, long service life, and convenient maintenance, it is particularly suitable for fluid delivery systems in industries such as chip semiconductors, photovoltaic solar cells, light-emitting diodes, liquid crystal displays, and electronics.

[0003] However, the airbag pump is very noisy and vibrates, causing great noise pollution to the semiconductor production environment and failing to meet the occupational health standards of industrial production workshops.

[0004] Existing noise reduction technologies for airbag pumps, such as CN216642417U, reduce the noise of the airbag pump by adding an external noise-absorbing component with a sound-absorbing layer. However, these technologies do not fundamentally eliminate the noise caused by the severe vibration of the airbag pump and face the problem of aging and failure of the sound-absorbing layer. Utility Model Content

[0005] To address the aforementioned issues, this application proposes a low-noise airbag pump that can reduce the noise and vibration sources of the airbag pump, thereby reducing noise during airbag pump production and improving the sound environment of the workshop.

[0006] According to one aspect of this application, a low-noise airbag pump is provided, including a soundproof cover, a pump body, and an air valve;

[0007] The pump body is provided with at least two check valves; the pump body is provided with flow channels communicating with the check valves; the left and right ends of the pump body are provided with compression chambers communicating with ball valve chambers, the compression chambers are provided with air bags, the air bags are respectively threaded to the two ends of the outer side of the compression chamber, and the ends of the compression chambers are respectively connected to a first air pipe connector and a second air pipe connector, and the first air pipe connector and the second air pipe connector are both connected to the air valve through pipes.

[0008] The air valve is located on the side wall of the pump body, and the silencer is located on the outer periphery of the pump body, forming a cavity between the silencer and the pump body.

[0009] Optionally, the length of the cavity formed between the silencer and the pump body is 5-20 mm.

[0010] Optionally, the two ends of the flow channel are connected to the inlet pipe and the outlet pipe, respectively; the silencing cover is also provided with a flow stabilizing pipe section at the inlet pipe, the flow stabilizing pipe section is connected to the main body of the silencing cover, and an elastic interlayer is provided between the flow stabilizing pipe section and the inlet pipe.

[0011] Specifically, the flow stabilizing pipe section is threadedly connected to the main body of the silencer. During installation, the flow stabilizing pipe section is first fitted onto the end of the water inlet pipe, and then the threads are tightened to fix the flow stabilizing pipe section. An elastic interlayer is provided between the flow stabilizing pipe section and the main body of the silencer, which is made of the same material as the above-mentioned elastic interlayer to reduce the problem of fastener loosening caused by vibration.

[0012] Optionally, it also includes a base, which includes a plurality of support columns, support seats and a bottom plate arranged from top to bottom. The support columns are used to support the pump body. The support columns and support seats are both made of an alloy covered with a polymer material. An elastic interlayer is provided between the support seats and the bottom plate.

[0013] Optionally, the material of the elastic interlayer includes one of EVA, PU, ​​TPU and rubber.

[0014] Optionally, the thickness of the elastic interlayer between the flow stabilizing pipe section and the water inlet pipe is 3-8mm, and the thickness of the elastic interlayer between the support base and the base plate is 3-20mm.

[0015] Optionally, the inner wall of the soundproof cover is provided with 1-3 layers of sound insulation material, and the thickness of each layer of sound insulation material is 2-8mm.

[0016] Optionally, the sound insulation material is sound-absorbing foam, sound-absorbing cotton, or sound-absorbing glass wool.

[0017] Optionally, the sound insulation material consists of three layers, from the inner wall of the soundproof cover to the outermost layer, namely sound-absorbing glass wool, sound-absorbing foam, and sound-absorbing cotton.

[0018] Optionally, the compression chamber is provided with a telescopic limiting rod, one end of which is fixed to the inner wall of the compression chamber and the other end is connected to the end of the air bag. The air bag can drive the telescopic limiting rod to reciprocate in the horizontal direction.

[0019] The beneficial effects that this application may produce include, but are not limited to:

[0020] 1. The low-noise airbag pump of this application dissipates noise energy in multiple ways and reduces noise propagation by setting a soundproof cover with a cavity and setting sound insulation material in the inner layer of the soundproof cover; at the same time, the setting of a flow stabilizing pipe section and telescopic limit rod reduces the noise generated by vibration of the delivery pipe or components, thereby solving the source of noise generation from the pump body itself.

[0021] 2. The low-noise airbag pump of this application absorbs and blocks the noise generated during the operation of the pump body by setting a cavity between the silencer and the pump body and the sound insulation material attached to the inner surface of the silencer. This greatly reduces the transmission of noise.

[0022] 3. The low-noise airbag pump of this application, by setting a flow stabilizing pipe and setting a highly elastic material between the flow stabilizing pipe and the water inlet pipe, prevents the water inlet pipe from swinging due to the instability of the liquid flow, thus reducing the noise generation in the pump.

[0023] 4. The low-noise airbag pump of this application, by setting a telescopic limiting rod in the airbag, the limiting rod can extend and retract with the extension and retraction of the airbag, and at the same time, it limits the airbag from deviating in the vertical direction and generating noise. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the airbag pump without a soundproof cover according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the overall structure of the airbag pump including the silencer according to an embodiment of this application;

[0027] Figure 3 This is a schematic cross-sectional view of the pump body excluding the airbag pump in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of a wind pump containing a flow stabilizing pipe section, as described in an embodiment of this application.

[0029] Figure 5 This is a cross-sectional view of the soundproof cover involved in the embodiment of this application.

[0030] List of components and reference numerals:

[0031] 1. Pump body; 2. Air valve; 3. Silencing cover; 4. First air pipe connector; 5. Second air pipe connector; 6. Water inlet pipe; 7. Flow stabilizing pipe section; 8. Elastic interlayer; 9. Base; 10. Support column; 11. Support seat; 12. Base plate; 13. Air bag; 14. Telescopic limit rod; 15. Cavity; 16. Sound-absorbing cotton; 17. Sound-absorbing foam; 18. Sound-absorbing glass wool. Detailed Implementation

[0032] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0033] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0035] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0039] refer to Figures 1-5 The embodiments of this application disclose a low-noise airbag pump, including a soundproof cover 3, a pump body 1 and an air valve 2;

[0040] The pump body 1 is provided with at least two check valves; the pump body 1 is provided with a flow channel communicating with the check valves; the left and right ends of the pump body 1 are provided with compression chambers communicating with the ball valve cavity, and the compression chambers are provided with air bags 13. The air bags 13 are respectively threaded to the two ends of the outer side of the compression chamber. The ends of the compression chambers are respectively connected to a first air pipe connector 4 and a second air pipe connector 5. The first air pipe connector 4 and the second air pipe connector 5 are both connected to the air valve 2 through pipes.

[0041] The air valve 2 is located on the side wall of the pump body 1, and the silencer 3 is located on the outer periphery of the pump body 1, forming a cavity 15 between the silencer 3 and the pump body 1. The cavity provides space for noise to be reflected on the inner wall of the silencer, which can significantly improve the sound absorption performance.

[0042] In one implementation, the length of the cavity 15 formed between the silencer 3 and the pump body 1 is 5-20mm. This length is the distance between the innermost layer of the silencer 3 and the outermost layer of the pump body 1, which can ensure effective sound dissipation while avoiding the overall bulkiness of the airbag pump, which would make it inconvenient to transport and install.

[0043] In one implementation, the two ends of the flow channel are connected to the inlet pipe 6 and the outlet pipe, respectively; the silencer 3 is also provided with a flow stabilizing pipe section 7 at the inlet pipe 6, the flow stabilizing pipe section 7 is connected to the main body of the silencer 3, and an elastic interlayer 8-1 is provided between the flow stabilizing pipe section 7 and the inlet pipe 6. The flow stabilizing pipe section 7 is sleeved at the connection between the inlet pipe 6 and the pump body 1 and extends a distance in the direction of the inlet pipe 6, and an elastic interlayer 8-1 is provided between the two.

[0044] Through the aforementioned components, the flow stabilizing pipe section 7 plays a stabilizing role for the water inlet pipe 6, preventing the water inlet pipe 6 from further vibrating due to the instability of the liquid flow inside the pipe, thereby exacerbating the problem of noise generated by the unstable fluid in the airbag pump.

[0045] Specifically, the connection between the flow stabilizing pipe section 7 and the main body of the silencer hood 3 can adopt conventional connection methods in the existing technology, such as threaded connection, snap-fit ​​connection, welding, etc., preferably threaded connection, which can facilitate the installation between the pipeline and the pump body 1 and facilitate subsequent maintenance.

[0046] As one embodiment, it also includes a base 9, which includes a plurality of support columns 10, support seats 11 and a base plate 12 arranged from top to bottom. The support columns 10 are used to support the pump body 1. The support columns 10 and the support seats 11 are both made of an alloy covered with a polymer material.

[0047] The polymer material covers the alloy body, ensuring that the body will not be corroded due to accidental damage to the pump body 1. This increases the overall weight of the base 9, lowers the center of gravity of the airbag pump, and reduces the pump's violent vibration, thereby reducing the noise caused by the vibration.

[0048] The air valve 2, air inlet pipe, air outlet pipe and support column 10 pass through the silencer 3. The silencer 3 and the above-mentioned components are provided with an elastic interlayer 8-1 that matches the shape of the components. The thickness of the elastic interlayer 8-1 is 1.5-5mm.

[0049] An elastic interlayer 8-2 is provided between the support base 11 and the base plate 12. The elastic interlayer 8-2 makes it difficult for the vibration of the pump body 1 to be ultimately transmitted to the base plate 12, thereby increasing the overall stability of the air bag pump.

[0050] As one implementation, the elastic interlayer 8 is made of one of EVA, PU, ​​TPU and rubber.

[0051] Specifically, those skilled in the art can select according to actual needs, preferably substances that will not produce impurities to the airbag pump or affect its normal operation.

[0052] As one implementation method, the thickness of the elastic interlayer 8-1 between the flow stabilizing pipe section 7 and the water inlet pipe 6 is 3-8mm, and the thickness of the elastic interlayer 8-2 between the support base 11 and the base plate 12 is 3-20mm. Thicker interlayers are beneficial to weaken vibration transmission, but will cause dynamic compensation to aggravate the instability of the base 9 of the wind bag pump.

[0053] As one implementation method, the inner wall of the soundproof cover 3 is provided with 1-3 layers of sound insulation material, and the thickness of each layer of sound insulation material is 2-8mm, to ensure effective sound absorption and noise reduction.

[0054] As one implementation method, the sound insulation material is sound-absorbing foam 17, sound-absorbing cotton 16, or sound-absorbing glass wool 18.

[0055] In one implementation, the sound insulation material consists of three layers: sound-absorbing glass wool 18, sound-absorbing foam 17, and sound-absorbing cotton 16, which are arranged from the inner wall of the soundproof cover 3 to the outermost layer.

[0056] Sound-absorbing glass wool 18 has a rough surface and loose, interwoven internal fibers, forming a large number of tiny pores. It is a high-quality sound-absorbing material, but it is brittle and has dust hazards. It can be placed on the innermost layer of sound insulation materials. Sound-absorbing foam 17 has good sound absorption effect and is environmentally friendly, but it is sensitive to environmental humidity and has poor durability. Sound-absorbing cotton 16 not only has good sound insulation effect but also strong chemical stability, fire resistance, and moisture resistance. It can be used as the outermost layer of sound insulation material.

[0057] In one embodiment, a telescopic limiting rod 14 is provided inside the compression chamber. One end of the telescopic limiting rod 14 is fixed to the inner wall of the compression chamber, and the other end is connected to the end of the air bag 13.

[0058] The air bag 13 can drive the telescopic limit rod 14 to reciprocate in the horizontal direction, so as to ensure that the air bag 13 reciprocates in a constant horizontal direction and reduce noise caused by improper friction due to eccentric extension and retraction of the air bag 13.

[0059] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0060] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A low-noise airbag pump, characterized in that, Includes a soundproof enclosure, pump body, and air valve; The pump body is provided with at least two check valves; the pump body is provided with flow channels communicating with the check valves; the left and right ends of the pump body are provided with compression chambers communicating with ball valve chambers, the compression chambers are provided with air bags, the air bags are threaded to the two ends of the outer side of the compression chamber respectively, and the ends of the compression chamber are respectively connected to a first air pipe connector and a second air pipe connector, and the first air pipe connector and the second air pipe connector are both connected to the air valve through pipes. The air valve is located on the side wall of the pump body, and the silencer is located on the outer periphery of the pump body, forming a cavity between the silencer and the pump body.

2. The low-noise airbag pump according to claim 1, characterized in that, The length of the cavity formed between the silencer and the pump body is 5-20mm.

3. The low-noise airbag pump according to claim 2, characterized in that, The two ends of the flow channel are connected to the inlet pipe and the outlet pipe, respectively; the silencing cover is also provided with a flow stabilizing pipe section at the inlet pipe, the flow stabilizing pipe section is connected to the main body of the silencing cover, and an elastic interlayer is provided between the flow stabilizing pipe section and the inlet pipe.

4. The low-noise airbag pump according to claim 3, characterized in that, It also includes a base, which includes several support columns, support seats and a bottom plate arranged from top to bottom. The support columns are used to support the pump body. The support columns and support seats are both made of an alloy covered with a polymer material. An elastic interlayer is provided between the support seats and the bottom plate.

5. The low-noise airbag pump according to claim 3 or 4, characterized in that, The elastic interlayer is made of materials including EVA, PU, ​​TPU, and rubber.

6. The low-noise airbag pump according to claim 5, characterized in that, The thickness of the elastic interlayer between the flow stabilizing pipe section and the inlet pipe is 3-8mm, and the thickness of the elastic interlayer between the support base and the base plate is 3-20mm.

7. The low-noise airbag pump according to claim 4, characterized in that, The inner wall of the soundproof cover is provided with 1-3 layers of sound insulation material, and the thickness of each layer of sound insulation material is 2-8mm.

8. The low-noise airbag pump according to claim 7, characterized in that, The sound insulation material is sound-absorbing foam, sound-absorbing cotton, or sound-absorbing glass wool.

9. The low-noise airbag pump according to claim 7, characterized in that, The sound insulation material consists of three layers: sound-absorbing glass wool, sound-absorbing foam, and sound-absorbing cotton, from the inner wall of the soundproof cover to the outermost layer.

10. The low-noise airbag pump according to any one of claims 1-9, characterized in that, The compression chamber is equipped with a telescopic limiting rod. One end of the telescopic limiting rod is fixed to the inner wall of the compression chamber, and the other end is connected to the end of the air bag. The air bag can drive the telescopic limiting rod to reciprocate in the horizontal direction.

Images