Air bag pump capable of achieving stable output

Abstract

The utility model provides an air bag pump capable of outputting stably, which relates to the technical field of air bag pumps and comprises an air bag pump main body and an air inlet main body, the air inlet main body is connected to the air bag pump main body; the air inlet body comprises a first air inlet pipe and a second air inlet pipe which are sequentially connected, an air filter is arranged in the first air inlet pipe, an air flow limiting piece and an elastic piece are arranged in the second air inlet pipe, an air flow cavity is formed between the two sides of the air flow limiting piece and the inner wall of the second air inlet pipe, and one end of the elastic piece is connected with the air flow limiting piece. The other end of the elastic piece is fixed in the second air inlet pipe; in the gas inlet process, gas firstly passes through the first gas inlet pipe and is filtered through the gas filter, the filtered gas is driven by the elastic piece, and the gas flow limiting piece can move in the axial direction of the second gas inlet pipe, so that the stable change of the gas flow is adjusted by changing the size of the gas flow cavity, and then stable conveying of liquid is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind bag pump, concretely relates to a wind bag pump capable of stable output. BACKGROUND

[0002] The wind bag pump is divided into two working cavities, and the wind bags are connected by a connecting shaft. Each working cavity is divided into a gas phase working cavity and a liquid phase working cavity. After compressed air enters the gas phase working cavity of the pump, the compressed wind bag deforms and moves. The compressed air enters the two gas phase working cavities in sequence through a reversing valve to control the compressed air. The liquid phase cavity alternately absorbs and discharges liquid to realize the delivery of liquid.

[0003] The existing wind bag pump has large pulsation, and the output flow and pressure have obvious fluctuation, which may affect the stability and precision of the system and easily cause large impact and wear on the pipeline and related equipment. The output flow and pressure have obvious intermittence during the extension and contraction operation, which is not continuous and stable. In addition, the existing wind bag pump may have impurities such as particulate matter during the air inlet process, which may wear the components of the wind bag pump when entering the gas phase working cavity, thereby reducing the service life of the wind bag pump. SUMMARY

[0004] In order to solve the above problems, the utility model provides a wind bag pump capable of stable output, which comprises a wind bag pump body and an air inlet body.

[0005] The air inlet body comprises a first air inlet pipe and a second air inlet pipe connected in sequence. The first air inlet pipe is internally provided with a gas filter.

[0006] The second air inlet pipe is internally provided with a gas flow limiting piece and an elastic piece. The gas flow limiting piece is connected with the elastic piece at one end and fixed to the inside of the second air inlet pipe at the other end. During the air inlet process, the gas first passes through the first air inlet pipe and is filtered by the gas filter. The filtered gas is driven by the elastic piece, and the gas flow limiting piece can move along the axial direction of the second air inlet pipe, so as to adjust the stable change of the gas flow by changing the size of the airflow cavity.

[0007] Optionally, the elastic piece comprises a spring and a connecting piece. The connecting piece is arranged at one end of the spring, and the other end of the spring can be fixed to the middle position in the inside of the second air inlet pipe through a connecting rod. The gas flow limiting piece is fixed to the connecting piece during use.

[0008] Optionally, the gas filter is a filter screen. Further, in order to avoid the particulate matter in the air from entering the gas phase working cavity of the wind bag pump, a filter screen can be installed on the inner wall of the first air inlet pipe to filter out the particulate matter in the air.

[0009] Optionally, the gas filter comprises an elastic support arranged at the middle position of the filter screen.

[0010] Optionally, the second air inlet pipe is in the shape of a circular truncated cone, the diameter of the end of the second air inlet pipe connected with the first air inlet pipe is larger than the diameter of the other end of the second air inlet pipe, the gas flow limiting member is in the shape of a circular truncated cone, and the inner wall surface of the second air inlet pipe is in the same shape as the side wall surface of the gas flow limiting member.

[0011] Optionally, the side wall of the gas flow limiting member is coated with a wear-resistant layer.

[0012] Optionally, the gas flow limiting member is provided with a through hole, and the diameter of the through hole is less than one fourth of the diameter of the gas flow limiting member.

[0013] Optionally, the air inlet body comprises a third air inlet pipe, and one end of the second air inlet pipe is connected with the third air inlet pipe.

[0014] Optionally, the air bag pump body comprises a pump body, an inlet and an outlet, the inlet is arranged on one side of the pump body, and the outlet is arranged above the pump body.

[0015] Compared with the prior art, the air bag pump has at least one of the following beneficial effects:

[0016] (1) The air bag pump capable of stable output is provided with an air inlet body, and a gas filter is arranged on the air inlet body, so that the gas entering the air bag pump can be filtered, and the particulate matter is prevented from entering the air bag pump and damaging the components of the air bag pump.

[0017] (2) The wind bag pump capable of stable output provided with the gas flow limiting member and the elastic member, the filtered gas is driven by the elastic member, the gas flow limiting member can move along the axial direction of the second air inlet pipe, thereby adjusting the stable change of the gas flow by changing the size of the airflow cavity, thereby ensuring the stable operation of the wind bag pump.

[0018] (3) The flow and pressure of the wind bag pump capable of stable output can be controlled within a certain range, which can ensure the stability and precision of the system, and will not cause great impact and wear on the pipeline and related equipment.

[0019] (4) The wear-resistant layer is coated on the side wall of the gas flow limiting member, which can avoid the friction damage of the airflow limiting member during use, and avoid the damage of the airflow limiting member to the second air inlet pipe. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 An exemplary embodiment of the overall structure of the wind bag pump capable of stable output is shown;

[0022] Figure 2 An exemplary embodiment of the air inlet main body structure is shown;

[0023] Figure 3 An exemplary embodiment of the gas flow limiting member structure is shown.

[0024] Explanation of reference signs:

[0025] 1-air inlet main body; 11-first air inlet pipe; 12-second air inlet pipe; 13-third air inlet pipe; 111-gas filter; 112-elastic support; 121-gas flow limiting member; 122-elastic member; 123-airflow cavity; 124-wear-resistant layer; 125-through hole; 2-wind bag pump main body; 21-pump body; 22-liquid inlet; 23-liquid outlet. DETAILED DESCRIPTION

[0026] In order to more clearly explain the overall concept of the present application, the following will be described in detail in an exemplary manner combined with the drawings of the specification.

[0027] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other manners different from the description herein, therefore, the protective scope of the present application is not limited by the specific embodiments disclosed below.

[0028] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Figure 1 An exemplary embodiment of the overall structure diagram of the air bag pump capable of stable output of the present application is shown; Figure 2 An exemplary embodiment of the main structure diagram of the air inlet of the present application is shown; Figure 3 An exemplary embodiment of the gas flow limiting member structure diagram is shown.

[0032] In an exemplary embodiment of the present application, reference is made to Figures 1-3As shown, the wind bag pump capable of smooth output comprises a wind bag pump body 2 and an air inlet body 1.

[0033] The air inlet body 1 comprises a first air inlet pipe 11, a second air inlet pipe 12 and a third air inlet pipe 13 connected in sequence, and the first air inlet pipe 11 is internally provided with a gas filter 111. The gas filter 111 is a filter screen, and the pore size of the filter screen can be adjusted by those skilled in the art according to the use scenario. The gas filter 111 comprises an elastic support 112 and a support pad. The elastic support 112 is a spring, and the support pad is fixed to one end of the spring, can increase the support area of the filter screen, and a plurality of holes are formed in the support pad to avoid the accumulation of particulate matter. A support rod is arranged on the side wall of the first air inlet pipe 11, and the spring is fixed to the middle position of the support rod, so that the spring is supported at the middle position of the filter screen, and the filter screen is supported to protrude in the direction of air inlet. The elastic support supports the filter screen and reduces the impact of the gas on the filter screen. On the other hand, the filter screen vibrates and the particulate matter attached to the filter screen falls off to prolong the service life of the filter screen and ensure that the air inlet does not have abnormal conditions.

[0034] The second air inlet pipe 12 is internally provided with a gas flow limiting member 121 and an elastic member 122. The gas flow limiting member 121 is connected to the elastic member 122, and the other end of the elastic member 122 is fixed to the inner wall of the second air inlet pipe 12.

[0035] The elastic member 122 comprises a spring and a connecting member (not shown in the figure), and the connecting member is arranged at one end of the spring. The connecting member can be a connecting pad. If the spring directly contacts the gas flow limiting member, the contact area is small and not stable. The connecting pad can be used to fix the gas flow limiting member and increase the connection strength. The other end of the spring can be fixed to the middle position of the inner wall of the second air inlet pipe 12 through a connecting rod.

[0036] The second air inlet pipe 12 is a circular truncated cone, and the diameter of one end of the second air inlet pipe 12 connected to the first air inlet pipe 11 is greater than the diameter of the other end of the second air inlet pipe 12. The gas flow limiting member 121 is a circular truncated cone, and the inner wall surface type of the second air inlet pipe 12 is consistent with the side wall surface type of the gas flow limiting member 121.

[0037] The side wall of the gas flow limiting member 121 is coated with a wear-resistant layer 124, which is a rubber layer. Coating the wear-resistant layer can avoid damage to the gas flow limiting member during use and prevent the gas flow limiting member from damaging the second air inlet pipe.

[0038] The gas flow limiting piece 121 is provided with a through hole 125, and the diameter of the through hole 125 is less than one fourth of the diameter of the gas flow limiting piece 121. If the gas flow limiting piece contacts with the inner wall of the second gas inlet pipe, the gas flow channel will be completely closed, the through hole can avoid the gas inlet pipe being in a closed state, and can avoid local excessive pressure and damage.

[0039] The wind bag pump body 2 comprises a pump body 21, a liquid inlet 22 and a liquid outlet 23, the liquid inlet 22 is arranged on one side of the pump body 21, and the liquid outlet is arranged above the pump body.

[0040] In the working process, the gas first passes through the first gas inlet pipe 11, is filtered through the gas filter 111, and then enters the second gas inlet pipe 12. Under the driving of the elastic piece 122, the gas flow limiting piece 121 can move along the axial direction of the second gas inlet pipe 12, so that the size of the gas flow cavity 123 is changed to adjust the stable change of the gas flow. Finally, the stable gas flow enters the gas phase working cavity of the pump body 21 from the third gas inlet pipe, the compressed wind bag is deformed and moved, the air is controlled to enter the two gas phase working cavities in turn through the reversing valve, the liquid in the liquid phase cavity is alternately absorbed and discharged, and the stable delivery of the liquid is realized.

[0041] The above only describes the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A wind pump capable of stable output, characterized in that, The airbag pump includes an airbag pump body and an air inlet body; the air inlet body is connected to the airbag pump body. The main body of the air inlet includes a first air inlet pipe and a second air inlet pipe connected in sequence. A gas filter is installed inside the first air inlet pipe. The second intake pipe is equipped with a gas flow restrictor and an elastic element. An airflow cavity is formed between the two sides of the gas flow restrictor and the inner wall of the second intake pipe. One end of the elastic element is connected to the gas flow restrictor, and the other end of the elastic element is fixed inside the second intake pipe. During the intake process, the gas first passes through the first intake pipe and is filtered by the gas filter. Driven by the elastic element, the gas flow restrictor can move along the axial direction of the second intake pipe, thereby adjusting the stable change of gas flow by changing the size of the airflow cavity.

2. The airbag pump capable of stable output according to claim 1, characterized in that, The gas filter is a filter screen.

3. The airbag pump capable of stable output according to claim 2, characterized in that, The gas filter includes a resilient support, which is positioned in the middle of the filter screen.

4. The airbag pump capable of stable output according to claim 1, characterized in that, The second intake pipe is frustum-shaped. The diameter of the end of the second intake pipe connected to the first intake pipe is larger than the diameter of the other end of the second intake pipe. The gas flow restrictor is frustum-shaped. The inner wall surface of the second intake pipe is consistent with the side wall surface of the gas flow restrictor.

5. The airbag pump capable of stable output according to claim 1, characterized in that, The sidewalls of the gas flow restrictor are coated with a wear-resistant layer.

6. The wind pump capable of stable output according to claim 1, characterized in that, The gas flow restrictor has a through hole, the diameter of which is less than one-quarter of the diameter of the gas flow restrictor.

7. The airbag pump capable of stable output according to claim 1, characterized in that, The main body of the air intake includes a third air intake pipe, and one end of the second air intake pipe is connected to the third air intake pipe.

8. The airbag pump capable of stable output according to claim 1, characterized in that, The main body of the airbag pump includes a pump body, an inlet, and an outlet. The inlet is located on one side of the pump body, and the outlet is located on the top of the pump body.

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