Novel air bag pump

Abstract

The utility model relates to the technical field of pump equipment, in particular to a novel air bag pump. The air bag pump comprises a pump body and a reversing valve, the left end and the right end of the pump body are provided with two compression cavities communicated with the ball valve, and corrugated pipes are installed in the two compression cavities respectively. Threaded end pipes are arranged at the positions, at the outer ends of the two compression cavities, of the pump body respectively, end covers are connected to the threaded end pipes in a threaded mode, the corrugated pipes are fixedly pressed in the compression cavities through the end covers respectively, air inlet holes and air outlet holes which are communicated with the interiors of the corrugated pipes are formed in the end covers, and the air inlet holes and the air outlet holes are connected with an air inlet pipe connector and an air outlet pipe connector respectively. The gas inlet pipe joint and the gas outlet pipe joint are connected with the reversing valve through gas-guide pipes; the inner side of the end cover is provided with a mounting counter bore communicated with an air outlet, a piston assembly is arranged in the mounting counter bore, the front end of a piston rod of the piston assembly is supported in the center of the air bag, and a plurality of damping strips are arranged between the piston assembly and the inner side of the end cover at intervals, so that the vibration magnitude is effectively reduced, pump vibration and noise are solved from the source, and the damping and noise reduction effects are good.

Description

Technical Field

[0001] This application relates to the field of pump equipment technology, and in particular to a novel airbag pump. Background Technology

[0002] A pneumatic airbag pump is a type of pump that transports special liquids by alternating the increase and decrease of the working volume of a variable-volume airbag within the pump cylinder. Its working principle involves using compressed air as a power source, with a reversing valve controlling the sequential entry of compressed air into two gas phase working chambers. The alternating suction and discharge of liquid in the liquid phase chamber achieves the pumping of the liquid. Pneumatic airbag pumps are generally made of fluorine-based materials, offering advantages such as high cleanliness, corrosion resistance, long service life, and easy maintenance. They are suitable for transporting various corrosive gases and are currently widely used in medical equipment, industrial automation, laboratory instruments, and other fields requiring precise gas flow control.

[0003] Due to the high-frequency reciprocating motion of the transmission mechanism and the airbag during operation, the airbag pump inevitably generates significant vibrations. Fluctuations in the air source and the transported medium also contribute to vibration. Prolonged vibration not only affects the sealing of the airbag assembly and the stability of the connections between the pump and pipelines, and between the pump and the base, thus impacting the pump's lifespan, but also causes substantial noise pollution. Vibration reduction and noise control for airbag pumps are primarily achieved through methods such as installing vibration-damping bases and reinforcing silencers, as illustrated by the pump base with vibration-damping and noise-reducing functions disclosed in patent CN118009150A and the airbag pump silencer disclosed in CN221879630U. However, these methods do not fundamentally solve the vibration problem of airbag pumps and have limited effectiveness in reducing vibration and noise. Utility Model Content

[0004] To address the aforementioned issues, this application proposes a novel airbag pump that can fundamentally resolve airbag pump vibration, reduce noise generation, and extend the service life of the airbag pump.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A novel airbag pump includes: a pump body and a reversing valve;

[0007] The pump body has two compression chambers at its left and right ends that are connected to ball valves. Corrugated pipes are installed in the two compression chambers respectively. The pump body has threaded end pipes at the outer ends of the two compression chambers. End caps are threaded onto the threaded end pipes. The end caps fix and press the corrugated pipes into the compression chambers respectively. The end caps are provided with air inlet and air outlet that are connected to the inside of the corrugated pipes. The air inlet and air outlet are connected to air inlet pipe connectors and air outlet pipe connectors respectively. The air inlet pipe connectors and air outlet pipe connectors are connected to the reversing valve through air guide pipes.

[0008] The inner side of the end cap is provided with a mounting countersunk hole with an air outlet. A piston assembly is installed in the mounting countersunk hole. The front end of the piston rod of the piston assembly is supported in the center of the air bag. Several shock-absorbing strips are provided at intervals between the piston assembly and the inner side of the end cap.

[0009] As a further option, the damping strip is made of an elastic material.

[0010] As a further embodiment, both the air inlet pipe connector and the air outlet pipe connector include an inner tube and a sleeve, with a cavity formed between the inner tube and the sleeve. A first elastic interlayer or several shock-absorbing springs are installed within the cavity. The air source passes through the air inlet pipe connector, and the cavity and shock-absorbing springs within the air inlet pipe connector buffer the vibrations caused by fluctuating airflow, making the airflow entering the airbag more stable and reducing the impact of unstable airflow on the reciprocating motion of the airbag.

[0011] As a further embodiment, the material of the first elastic interlayer is any one of PU, TPU, and rubber.

[0012] As a further improvement, the first elastic interlayer is also provided with through holes at intervals to reduce the transmission of vibration and increase stability.

[0013] As a further embodiment, the pump body is provided with at least two check valves; the pump body is provided with a flow channel communicating with the check valves; the two ends of the flow channel are respectively connected to the inlet pipe and the outlet pipe.

[0014] As a further embodiment, a diversion pipe is also provided near the pump body section of the inlet pipe, and the inlet pipe and the diversion pipe are an integral structure; the diversion pipe is provided with several diversion holes at intervals, and the diversion holes are integral structures with the diversion pipe. This divides the moving liquid medium, increases energy loss, and thus improves the vibration reduction and noise reduction effect.

[0015] As a further embodiment, the system also includes a base, which comprises a plurality of support columns, support seats, and a base plate arranged from top to bottom. The support columns are used to support the pump body, and the support columns and support seats are both made of an alloy with a surface-coated fluorine material.

[0016] As a further embodiment, a second elastic interlayer is provided between the support base and the base plate.

[0017] The beneficial effects of this application include, but are not limited to:

[0018] 1. This application provides a novel airbag pump, which reduces the vibration generated during the reciprocating motion of the bellows by setting several damping strips at intervals between the piston assembly and the inner side of the end cap, setting the inlet and outlet air pipe joints as inner and outer sleeve structures with damping, and setting a diversion pipe, so that the airflow entering and exiting the bellows is more stable, buffering the vibration caused by the fluctuating airflow, thereby effectively reducing the vibration level, solving the pump vibration and noise generation from the source, and achieving good vibration reduction and noise reduction effect.

[0019] 2. The novel airbag pump provided in this application reduces the vibration generated during the reciprocating motion of the bellows and reduces noise generation by setting the bellows as a double-layer structure with a cavity and setting shock-absorbing blocks on the inner wall of the bellows.

[0020] 3. The novel airbag pump provided in this application, by setting the inlet and outlet air pipe joints as inner and outer sleeve structures with cavities, and by setting elastic materials or shock-absorbing springs in the cavities, can buffer the vibration caused by fluctuating airflow and reduce the impact of airflow fluctuations.

[0021] 4. The novel airbag pump provided in this application improves the vibration damping and noise reduction effect by setting a diversion pipe at the liquid inlet pipe to divide the moving liquid medium and increase energy loss. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the overall structure of the airbag pump involved in this application;

[0024] Figure 2 This is a schematic diagram of the pump body of the airbag pump involved in this application;

[0025] Figure 3 This is a cross-sectional view of the inlet / outlet pipe connector portion involving the elastic interlayer in this application;

[0026] Figure 4 This is a schematic diagram of the water inlet pipe section involved in this application.

[0027] Components and reference numerals:

[0028] 1-Pump body, 2-Reversing valve, 3-Inlet pipe, 4-Outlet pipe, 5-Diverter pipe, 6-Base, 11-Compression chamber, 12-Bellwall, 13-End cap, 131-Air inlet, 132-Air outlet, 133-Air inlet pipe connector, 134-Air outlet pipe connector, 135-Mounting countersunk hole, 136-Piston assembly, 137-Shock absorber strip, 141-Inner tube, 142-Sleeve, 143-First elastic interlayer, 144-Shock absorber spring, 51-Diverter hole, 61-Support column, 62-Support base, 63-Base plate, 64-Second elastic interlayer. Detailed Implementation

[0029] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] refer to Figures 1-4 This application provides a novel airbag pump, including a pump body 1 and a reversing valve 2; the pump body 1 has two compression chambers 11 at its left and right ends that are connected to ball valves, and bellows 12 are installed in the two compression chambers respectively; the pump body 1 has threaded end pipes at the outer ends of the two compression chambers 11 respectively, and end caps 13 are threadedly connected to the threaded end pipes. The end caps 13 fix and press the bellows in the compression chambers 11 respectively, and the end caps 13 are provided with an air inlet 131 and an air outlet 132 that are connected to the bellows 12. The air inlet 131 and the air outlet 132 are respectively connected to an air inlet pipe connector 133 and an air outlet pipe connector 134. The air inlet pipe connector 133 and the air outlet pipe connector 134 are connected to the reversing valve 2 through an air guide pipe.

[0036] An installation countersunk hole 135 with an air vent is provided on the inner side of the end cap 13. A piston assembly 136 is provided in the installation countersunk hole 135, and the front end of the piston rod of the piston assembly 136 is supported in the center of the bellows 12. Several damping strips 137 are also provided at intervals between the piston assembly 136 and the inner side of the end cap.

[0037] As one implementation method, the shock-absorbing strips 137 are all made of elastic material.

[0038] In one embodiment, both the air inlet connector 133 and the air outlet connector 134 include an inner tube 141 and a sleeve 142, with a cavity formed between the inner tube 141 and the sleeve 142. A first elastic interlayer 143 or several shock-absorbing springs 144 are disposed within the cavity. The air source passes through the air inlet connector, and the cavity and shock-absorbing springs within the air inlet connector buffer the vibrations caused by fluctuating airflow, making the airflow entering the airbag more stable and reducing the impact of the reciprocating motion of the airbag caused by unstable airflow.

[0039] In one implementation, the first elastic interlayer 143 is made of any one of PU, TPU, and rubber.

[0040] Specifically, those skilled in the art can select the material of the elastic interlayer according to actual needs, preferably a substance that will not produce impurities to the airbag pump or affect its normal operation.

[0041] In one embodiment, the first elastic interlayer 143 is also provided with through holes at intervals to reduce the transmission of vibration and increase stability.

[0042] In one embodiment, the pump body is provided with at least two check valves; the pump body is provided with a flow channel communicating with the check valves; the two ends of the flow channel are respectively connected to the inlet pipe 3 and the outlet pipe 4.

[0043] In one implementation, a diversion pipe 5 is also provided between the inlet pipe 3 and the section near the pump body, with the inlet pipe 3 and the diversion pipe 5 being an integral structure. Several diversion holes are spaced apart on the diversion pipe 4, and the diversion holes are integrally formed with the diversion pipe 4. This divides the moving liquid medium, increasing energy loss and thus improving the vibration damping and noise reduction effect.

[0044] In one embodiment, the system also includes a base 6, which comprises several support columns 61, support seats 62, and a base plate 63 arranged from top to bottom. The support columns 61 support the pump body 1, and both the support columns 61 and the support seats 62 are made of an alloy with a fluorine-coated surface. The use of a fluorine-coated alloy for the base ensures that it is protected from corrosion should the pump body 1 rupture unexpectedly or leak due to poor sealing. Even if corrosion does occur, it increases the overall weight of the base, lowers the center of gravity of the pump, and thus reduces severe pump vibration and noise.

[0045] In one embodiment, a second elastic interlayer 64 is provided between the support base 62 and the base plate 63.

[0046] Understandably, the elastic interlayer 64 here has the same material and structure as the elastic interlayer 153.

[0047] 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.

[0048] 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 novel airbag pump, characterized in that, include: Pump body, reversing valve; The pump body has two compression chambers at its left and right ends, each connected to a ball valve. A bellows is installed in each of the two compression chambers. Threaded end pipes are provided at the outer ends of the two compression chambers, with end caps threaded onto them. The end caps securely press the bellows into the compression chambers, and each end cap has an inlet and an outlet port communicating with the bellows. The inlet and outlet ports are connected to an inlet pipe connector and an outlet pipe connector, respectively. These connectors are connected to a reversing valve via an air guide pipe. A countersunk hole with an outlet port is provided on the inner side of the end cap. A piston assembly is installed within this countersunk hole, with the piston rod of the piston assembly supported at the center of the air bladder. Several damping strips are spaced apart between the piston assembly and the inner side of the end cap.

2. The novel airbag pump according to claim 1, characterized in that, The shock absorber is made of elastic material.

3. The novel airbag pump according to claim 1, characterized in that, Both the air inlet pipe connector and the air outlet pipe connector include an inner pipe and a sleeve, with a cavity formed between the inner pipe and the sleeve.

4. A novel airbag pump according to claim 3, characterized in that, The cavity is provided with a first elastic interlayer or several shock-absorbing springs.

5. A novel airbag pump according to claim 4, characterized in that, The first elastic interlayer is made of any one of PU, TPU, and rubber.

6. A novel airbag pump according to claim 4 or 5, characterized in that, The first elastic interlayer is also provided with through holes at intervals.

7. A novel airbag pump according to claim 1, characterized in that, The pump body is provided with at least two check valves; the pump body is provided with a flow channel communicating with the check valves; the two ends of the flow channel are respectively connected to the inlet pipe and the outlet pipe.

8. A novel airbag pump according to claim 7, characterized in that, A diversion pipe is also provided near the pump body section of the inlet pipe, and the inlet pipe and the diversion pipe are an integral structure; a number of diversion holes are provided at intervals on the diversion pipe, and the diversion holes are an integral structure with the diversion pipe.

9. A novel airbag pump according to claim 1, characterized in that, It also includes a base, which includes several support columns, support seats and a base plate arranged from top to bottom. The support columns are used to support the pump body, and the support columns and support seats are both made of an alloy with a surface coated with fluorine material.

10. A novel airbag pump according to claim 9, characterized in that, A second elastic interlayer is also provided between the support base and the base plate.

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