Multi-air-bag linkage type air bag pump

Abstract

The utility model belongs to the technical field of air bag walls, and particularly relates to a multi-air-bag linkage type air bag pump. Comprising a pump body, four air bag assemblies and four linkage rods, and each air bag assembly is connected with the pump body; the pump body is provided with a liquid inlet and a liquid outlet, the air bag assembly comprises fixing barrels and U-shaped air bags connected with the interiors of the fixing barrels in a sliding mode, each fixing barrel and each U-shaped air bag are connected with the pump body, and a liquid inlet valve and a liquid outlet valve are arranged in each U-shaped air bag. Each liquid inlet valve is communicated with the liquid inlet through a liquid inlet channel, and each liquid outlet valve is communicated with the liquid outlet through a liquid outlet channel. Compared with a traditional air bag pump, under the condition that the expansion and contraction rate of the air bag is not changed, the flow of liquid conveyed by the air bag pump can be doubled when the air bag reciprocates once, and conveying of large-flow liquid is achieved.

Description

A multi-airbag linkage airbag pump Technical Field

[0001] This utility model belongs to the field of windbag wall technology, specifically relating to a multi-windbag linkage windbag pump. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] In semiconductor manufacturing, high-purity chemicals, and biomedicine, high-purity fluids are frequently required. Pneumatic airbag pumps, due to their low pollution levels and resistance to acid and alkali corrosion, are widely used in high-purity corrosive fluid systems. Pneumatic airbag pumps utilize the reciprocating motion of an internal bladder to draw in and expel fluid, thus achieving liquid transport. Traditional pneumatic airbag pumps have two working chambers, each consisting of a gas phase chamber and a liquid phase chamber. Compressed air enters the gas phase chamber, causing the airbag to deform and move. A reversing structure controls the sequential flow of compressed air into the two gas phase chambers. The alternating suction and discharge of liquid in the liquid phase chamber achieves liquid transport.

[0004] The flow rate of a plenum pump depends on the volume of the liquid working chamber and the expansion and contraction rate of the plenum. To achieve high-flow-rate fluid delivery, it is necessary to increase the size of the liquid working chamber system or improve the expansion and contraction rate of the plenum. However, the faster flow velocity of high-flow-rate fluids generates a greater impact force on the plenum, leading to faster plenum wear. Similarly, increasing the expansion and contraction rate of the plenum also accelerates wear. Increasing the plenum volume increases the driving force requirements; when the driving force cannot be significantly increased, increasing the plenum volume may actually slow down the expansion and contraction rate. To ensure continuous liquid supply, existing plenum pumps typically only have one pair of plenums connected by a rigid structure, with the two plenums moving in opposite directions in a cyclical manner. Therefore, increasing the number of plenums cannot increase the plenum volume. Consequently, existing plenum structures are insufficient for delivering high-flow-rate liquids. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-airbag linkage airbag pump. The multi-airbag linkage airbag pump features four airbag assemblies linked by linkage rods and connecting rods. When the volume of one airbag in an assembly changes, the connecting rod moves axially, causing the linkage rod to move, thereby causing opposite volume changes in two adjacent airbags, and ultimately causing the opposite airbag to undergo the same volume change. Compared to traditional airbag pumps, without changing the airbag expansion and contraction rate, the pump can double the liquid flow rate per reciprocating motion, achieving the delivery of large-volume liquids.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] In a first aspect, this utility model provides a multi-airbag linkage airbag pump, including a pump body, four airbag assemblies and four linkage rods, each of the airbag assemblies being connected to the pump body;

[0008] The pump body has an inlet and an outlet. The wind bag assembly includes a fixed cylinder and a U-shaped wind bag slidably connected to the inside of the fixed cylinder. Each fixed cylinder and each U-shaped wind bag are connected to the pump body. Each U-shaped wind bag is provided with an inlet valve and an outlet valve. Each inlet valve is connected to the inlet through an inlet channel, and each outlet valve is connected to the outlet through an outlet channel.

[0009] Each U-shaped airbag has a connecting rod that passes through each fixed cylinder at the end not connected to the pump body. The beginning and end of each linkage rod are respectively hinged to the end of two adjacent connecting rods that extend out of the fixed cylinder, and the beginning and end of the linkage rods are hinged to each other.

[0010] Preferably, each airbag assembly is distributed at a 90-degree angle to the others, and the lengths of the linkage rods are equal.

[0011] Preferably, the U-shaped airbag includes a corrugated pipe and a connecting plate, and the connecting rod is connected to the connecting plate.

[0012] More preferably, the diameter of the connecting plate is larger than the outer diameter of the bellows.

[0013] Preferably, it further includes a drive motor, which is connected to one or more of the connecting rods and drives them to reciprocate.

[0014] Preferably, a gas channel is provided on the closed end face of each of the fixed cylinders.

[0015] More preferably, each of the gas channels is provided with an electromagnetic reversing valve, which is connected to the controller.

[0016] In a further preferred embodiment, a displacement sensor is provided on the closed end face of the fixed cylinder, and the displacement sensor is connected to the controller.

[0017] Preferably, two sets of limiting rings are provided inside each of the fixed cylinders.

[0018] Preferably, both the inlet valve and the outlet valve are one-way valves.

[0019] The beneficial effects achieved by one or more technical solutions of this utility model are as follows:

[0020] By linking the four airbag components, it is ensured that at any given time, two airbags are in a coordinated liquid discharge state. Without increasing the volume of a single airbag, the total liquid working chamber volume is increased to twice the linked volume. This avoids the problem of a sharp increase in driving force demand caused by an excessively large single airbag volume, and maintains the coordinated movement rate of each airbag through the synchronous driving mechanism of the linkage rod, thereby achieving a multiplier effect of liquid flow under limited driving force conditions.

[0021] By employing multi-airbag linkage, the expansion and contraction stroke of a single airbag can be reduced to half that of the traditional structure while maintaining the same total displacement. This reduces the rate of change of curvature on the airbag surface, thereby effectively suppressing the losses caused by reciprocating motion and extending the maintenance cycle of the airbag assembly.

[0022] Furthermore, the four windbag components are arranged in a circumferentially uniform distribution structure, so that the liquid impact force generated during the expansion and contraction of each windbag is evenly distributed to four directions, which reduces the peak impact force borne by a single windbag compared to the traditional dual windbag structure. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 is a schematic diagram of the multi-airbag linkage airbag pump of this utility model;

[0025] In the diagram, 1 is the pump body, 2 is the air bag assembly, 3 is the linkage rod, 4 is the fixed cylinder, 5 is the U-shaped air bag, 6 is the connecting rod, 11 is the liquid inlet, 12 is the liquid outlet, 41 is the gas channel, 42 is the limiting ring, 51 is the liquid inlet valve, 52 is the liquid outlet valve, 53 is the bellows, and 54 is the connecting plate. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model 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 of this utility model and the features thereof can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0029] Furthermore, it should be understood in the description of this utility model 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 only for the convenience of describing this utility model 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 utility model.

[0030] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly 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 utility model according to the specific circumstances.

[0032] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one 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 invention. 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 may be combined in any suitable manner in one or more embodiments or examples.

[0033] As a specific implementation method, as shown in Figure 1, a multi-airbag linkage airbag pump includes a pump body 1, four airbag assemblies 2 and four linkage rods 3, with each airbag assembly 2 connected to the pump body 1.

[0034] The pump body 1 is provided with a liquid inlet 11 and a liquid outlet 12. The air bladder assembly 2 includes a fixed cylinder 4 and a U-shaped air bladder 5 slidably connected to the inside of the fixed cylinder 4. Each fixed cylinder 4 and each U-shaped air bladder 5 are connected to the pump body 1. An inlet valve 51 and an outlet valve 52 are arranged inside each U-shaped air bladder 5. Each inlet valve 51 is communicated with the liquid inlet 11 through a liquid inlet channel, and each outlet valve 52 is communicated with the liquid outlet 12 through a liquid outlet channel;

[0035] One end of each U-shaped air bladder 5 away from the pump body 1 is provided with a connecting rod 6 penetrating through each fixed cylinder 4. The head and tail of each linkage rod 3 are respectively hinged to one end of two adjacent connecting rods 6 extending out of the fixed cylinder 4, and the head and tail ends of the linkage rod 3 are hinged to each other.

[0036] By arranging the connecting rod 6 and the linkage rod 3 whose head and tail ends are hinged to each other and connecting the adjacent connecting rods 6, when one U-shaped air bladder 5 deforms, it can带动 other U-shaped air bladders 5 to deform simultaneously, realizing the linkage of the U-shaped air bladders 5. For example, when the left U-shaped air bladder 5 in Figure 1 expands, the connecting rod 6 connected to it moves to the left,带动 the two linkage rods 3 hinged to this connecting rod 6 to move,进而联动 the upper connecting rod 6 to move downward and the lower connecting rod 6 to move upward, and the upper and lower U-shaped air bladders 5 contract, further带动 the right U-shaped air bladder 6 to expand. Therefore, through the reciprocating motion of one U-shaped air bladder 6, the reciprocating motion of all U-shaped air bladders 6 can be联动, realizing the continuous liquid supply of the multi-air bladder linkage air bladder pump and realizing the输送 of large-flow liquids.

[0037] As a preferred embodiment, each air bladder assembly 2 is distributed at an equal angle of 90 degrees, and the lengths of the linkage rods 3 are equal. At this time, the four linkage rods 3 form a parallelogram structure, and the motion states of every two opposite U-shaped air bladders 6 are the same while the motion states of adjacent U-shaped air bladders 6 are opposite. The linkage between the U-shaped air bladders 6 is more stable, which is beneficial to reducing the liquid impact force generated during the expansion and contraction of the air bladder.

[0038] As a preferred embodiment, the U-shaped air bladder 5 includes a corrugated pipe 53 and a connecting plate 54 connected to the end of the corrugated pipe 53, and the connecting rod 6 is connected to the connecting plate 54.

[0039] As a preferred embodiment, the diameter of the connecting plate 54 is larger than the outer diameter of the corrugated pipe 53. The diameter of the connecting plate 54 being larger than the outer diameter of the corrugated pipe 53 enables the U-shaped air bladder to实现 sliding connection with the fixed cylinder 4 through the connecting plate, avoiding friction and wear between the U-shaped air bladder and the fixed cylinder when the liquid enters the U-shaped air bladder and causes radial expansion.

[0040] In a preferred embodiment, a drive motor (not shown) is also included. The drive motor is connected to one or more connecting rods 6 and drives them to reciprocate. The drive motor drives the connecting rods 6 to reciprocate, thereby causing the U-shaped airbags 5 to expand and contract reciprocally, achieving continuous liquid supply from the multi-airbag linkage airbag pump via electric drive. To ensure uniform force on the connecting rods 6 and the linkage rods 3, two oppositely arranged connecting rods 6 can be driven simultaneously, thereby linking the movement of the other two connecting rods 6.

[0041] In a preferred embodiment, a gas channel 41 is provided on the closed end face of each fixed cylinder 4.

[0042] In a preferred embodiment, each gas channel 41 is equipped with an electromagnetic reversing valve (not shown), which is connected to a controller (not shown). The electromagnetic reversing valve is used to switch the gas flow direction, thereby controlling the driving gas to enter and exit the airbag assembly 2, so as to realize the continuous liquid supply of the multi-airbag linkage airbag pump in a pneumatic manner.

[0043] In a preferred embodiment, a displacement sensor (not shown) is installed on the closed end face of the fixed cylinder 4, and the displacement sensor is connected to the controller. The displacement sensor detects the state of the U-shaped wind bag 5 to determine and switch the entry and exit state of the driving gas.

[0044] In a preferred embodiment, two sets of limiting rings 42 are provided inside each fixed cylinder 4. The limiting rings 42 are used to prevent the U-shaped air bag 5 from over-inflating and contracting, thereby preventing damage to the U-shaped air bag 5.

[0045] In a preferred embodiment, both the inlet valve 51 and the outlet valve 52 are one-way valves.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-airbag linkage airbag pump, characterized in that, The device includes a pump body, four airbag assemblies, and four linkage rods. Each airbag assembly is connected to the pump body. The pump body has an inlet and an outlet. Each airbag assembly includes a fixed cylinder and a U-shaped airbag slidably connected inside the fixed cylinder. Each fixed cylinder and each U-shaped airbag are connected to the pump body. Each U-shaped airbag is equipped with an inlet valve and an outlet valve. Each inlet valve is connected to the inlet through an inlet channel, and each outlet valve is connected to the outlet through an outlet channel. A connecting rod is provided at the end of each U-shaped airbag away from the pump body, penetrating each fixed cylinder. The beginning and end of each linkage rod are respectively hinged to the ends of two adjacent connecting rods extending out of the fixed cylinder, and the beginning and end ends of the linkage rods are hinged to each other.

2. The multi-airbag linkage airbag pump according to claim 1, characterized in that, Each airbag assembly is distributed at a 90-degree angle to the others, and the lengths of the linkage rods are equal.

3. The multi-airbag linkage airbag pump according to claim 1, characterized in that, The U-shaped airbag includes a corrugated tube and a connecting plate, and the connecting rod is connected to the connecting plate.

4. The multi-airbag linkage airbag pump according to claim 3, characterized in that, The diameter of the connecting plate is larger than the outer diameter of the bellows.

5. The multi-airbag linkage airbag pump according to claim 1, characterized in that, It also includes a drive motor, which is connected to one or more of the connecting rods and drives them to reciprocate.

6. The multi-airbag linkage airbag pump according to claim 1, characterized in that, Each of the fixed cylinders has a gas passage on its closed end face.

7. The multi-airbag linkage airbag pump according to claim 6, characterized in that, Each of the gas channels is equipped with an electromagnetic reversing valve, which is connected to the controller.

8. The multi-airbag linkage airbag pump according to claim 7, characterized in that, A displacement sensor is installed on the closed end face of the fixed cylinder, and the displacement sensor is connected to the controller.

9. The multi-airbag linkage airbag pump according to claim 1, characterized in that, Two sets of limiting rings are provided inside each of the fixed cylinders.

10. The multi-airbag linkage airbag pump according to claim 1, characterized in that, Both the inlet valve and the outlet valve are one-way valves.

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