Air cushion transport system

Abstract

The air cushion conveying system adopts an air cushion conveying device, the upper air chamber and the lower air chamber of the air cushion conveying device are connected with an upper air chamber gas conveying branch pipe and a lower air chamber gas conveying branch pipe respectively, the upper air chamber gas conveying branch pipe is provided with an upper air chamber gas pressure regulating valve, the lower air chamber gas conveying branch pipe is provided with a lower air chamber gas pressure regulating valve, the upper air chamber gas conveying branch pipe and the lower air chamber gas conveying branch pipe are connected with a total gas conveying pipe, the total gas conveying pipe is connected with an air compressor, the outlet of the upper air chamber gas pressure regulating valve is provided with an upper air chamber inlet gas pressure gauge, and the outlet of the lower air chamber gas pressure regulating valve is provided with a lower air chamber inlet gas pressure gauge; the air film forming process is stable, the belt operation is improved in smoothness and stability, and the safety and reliability of the whole device are ensured.

Description

[0001] The application is a divisional application of "Air cushion conveying device, air cushion conveying system and method" (application number: 2022102526904; filing date: March 15, 2022). TECHNICAL FIELD

[0002] The application belongs to the technical field of air cushion conveying, and particularly relates to an air cushion conveying system. BACKGROUND

[0003] The air cushion belt conveyor is also known as an air cushion conveyor. It is a new type of continuous conveying equipment developed in the 1970s in the Netherlands. China began to introduce this technology in the 1980s. In the mid-1980s, a large-scale test machine with a belt width of 1 meter and a length of 97 meters was installed in Wangpingcun Coal Mine of Beijing Mining Bureau, which opened the curtain on the popularization and application of air cushion conveyors in China. However, the air cushion conveyor (such as the air cushion type conveyor belt device disclosed in patent CN207890543U) still has problems such as unreasonable air chamber structure, unstable air flow and pressure, and inability to control precision. In addition, the installation and maintenance of the existing air cushion belt conveyor are not convenient. SUMMARY

[0004] In view of the technical problems existing in the background art, the air cushion conveying system provided by the application has a stable air film forming process, which helps to improve the smoothness and stability of the belt operation, and ensures the safety and reliability of the entire device.

[0005] In order to solve the above technical problems, the application adopts the following technical solutions to achieve:

[0006] An air cushion conveying system adopts an air cushion conveying device. The upper air chamber and the lower air chamber of the air cushion conveying device are respectively connected with an upper air chamber gas supply branch pipe and a lower air chamber gas supply branch pipe. An upper air chamber gas pressure regulating valve is arranged on the upper air chamber gas supply branch pipe, and a lower air chamber gas pressure regulating valve is arranged on the lower air chamber gas supply branch pipe. The upper air chamber gas supply branch pipe and the lower air chamber gas supply branch pipe are connected with a total gas supply pipe, and the total gas supply pipe is connected with an air compressor. An upper air chamber inlet pressure gauge is arranged at the outlet of the upper air chamber gas pressure regulating valve, and a lower air chamber inlet pressure gauge is arranged at the outlet of the lower air chamber gas pressure regulating valve.

[0007] The air cushion conveying device comprises a conveying belt, and the conveying belt comprises an upper layer feeding belt and a lower layer returning belt. A first upper air chamber sealing plate is arranged below the upper layer feeding belt. A first lower air chamber sealing plate is arranged below the first upper air chamber sealing plate. The lower layer returning belt is arranged below the first lower air chamber sealing plate. A second upper air chamber sealing plate is arranged below the lower layer returning belt. A second lower air chamber sealing plate is arranged below the second upper air chamber sealing plate.

[0008] The first upper air chamber sealing plate, the first lower air cavity sealing plate, the second upper air chamber sealing plate and the second lower air cavity sealing plate are installed in the main body slot box support; the first upper air chamber sealing plate and the first lower air cavity sealing plate enclose an upper air chamber, and the second upper air chamber sealing plate and the second lower air cavity sealing plate enclose a lower air chamber; a plurality of linearly arranged air flow channels are arranged on the first upper air chamber sealing plate and the second upper air chamber sealing plate, air flow outlets are arranged at both ends of the air flow channels, and air holes are arranged at the middle portions of the air flow channels;

[0009] The adjacent two air flow channels are communicated through the communication air channel openings.

[0010] The air flow channel is a shuttle-shaped groove.

[0011] Preferably, the first upper air chamber sealing plate and the second upper air chamber sealing plate are arc-shaped plates, the first lower air cavity sealing plate and the second lower air cavity sealing plate are downwardly recessed multi-folded plates; a strip-shaped mounting groove is arranged on the inner wall of the main body slot box support, the second lower air cavity sealing plate is hung on the strip-shaped mounting groove, and the second upper air chamber sealing plate is overlapped on the second lower air cavity sealing plate; the first lower air cavity sealing plate is hung on the top of the main body slot box support, and the first upper air chamber sealing plate is overlapped on the first lower air cavity sealing plate.

[0012] Preferably, a conveyor corridor is arranged outside the air cushion conveying device, a wind power recovery pipeline is arranged on the top of the conveyor corridor, a filter, a wind supplementing machine and a one-way valve are sequentially arranged on the wind power recovery pipeline along the flow direction of the wind, and the output end of the one-way valve is connected with the total air supply pipe.

[0013] The patent can achieve the following beneficial effects:

[0014] 1. The air film forming process in the application is stable, which helps to improve the smoothness and stability of the belt operation, and ensures the safety and reliability of the whole device.

[0015] 2. The upper layer feeding belt and the lower layer return belt are both provided with air films below, and the whole belt transmission resistance is small. The existing air cushion conveying system only sets air films on the upper layer belt, and the lower layer belt will pull the upper layer belt, which increases the pressure of the air film formation and is not conducive to energy saving.

[0016] 3. The air cushion conveying system is designed based on the air cushion conveying system, the positive pressure air flow around the air cushion conveying system can be collected, and the air flow can be supplemented into the total air supply pipe, so that the power consumption of the air compressor can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings and embodiments:

[0018] Figure 1 It is a three-dimensional structure diagram of the air cushion conveying device of the application Figure One ;

[0019] Figure 2The air cushion conveying device of the present application is shown in the figure;

[0020] Figure 3 The three-dimensional structure of the air cushion conveying device of the present application is shown in the figure Figure Two ;

[0021] Figure 4 The structure of the first upper air chamber sealing plate of the present application is shown in the figure;

[0022] Figure 5 The installation schematic of the air cushion conveying device of the present application is shown in the figure;

[0023] Figure 6 The cross-sectional view of the air cushion conveying device of the present application is shown in the figure;

[0024] Figure 7 The three-dimensional structure of the air cushion conveying device of the present application is shown in the figure Figure Three ;

[0025] Figure 8 The air flow direction between the first upper air chamber sealing plate and the upper layer feeding belt of the present application is shown in the figure;

[0026] Figure 9 The structure of the existing air cushion conveying device is shown in the figure;

[0027] Figure 10 The air flow direction below the belt of the existing air cushion conveying device is shown in the figure;

[0028] Figure 11 The structure of the air cushion conveying system of the present application is shown in the figure.

[0029] In the figure: upper layer feeding belt 101, lower layer return belt 102, first upper air chamber sealing plate 2, main body groove box support 3, first lower air cavity sealing plate 4, lower air chamber 5, second lower air cavity sealing plate 6, second upper air chamber sealing plate 7, upper air chamber 8, gas flow channel 9, air hole 10, communication air channel opening 11, gas flow outlet 12, partition plate 13, upper air chamber gas pressure regulating valve 14, lower air chamber gas pressure regulating valve 15, air compressor 16, conveyor corridor 17, filter 18, air supplementing machine 19, one-way valve 20, upper air chamber inlet gas pressure gauge 21, lower air chamber inlet gas pressure gauge 22. DETAILED DESCRIPTION

[0030] The preferred scheme is as follows Figures 1 to 8As shown, an air cushion conveying system employs an air cushion conveying device, which includes a conveyor belt comprising an upper feeding belt 101 and a lower return belt 102. A first upper air chamber sealing plate 2 is located below the upper feeding belt 101, a first lower air chamber sealing plate 4 is installed below the first upper air chamber sealing plate 2, the lower return belt 102 is located below the first lower air chamber sealing plate 4, a second upper air chamber sealing plate 7 is located below the lower return belt 102, and a second lower air chamber sealing plate 6 is located below the second upper air chamber sealing plate 7. The first upper air chamber sealing plate 2 and the second upper air chamber sealing plate 7 have the same structure, as do the first lower air chamber sealing plate 4 and the second lower air chamber sealing plate 6.

[0031] The first upper air chamber sealing plate 2, the first lower air chamber sealing plate 4, the second upper air chamber sealing plate 7, and the second lower air chamber sealing plate 6 are installed inside the main body slot bracket 3. The first upper air chamber sealing plate 2 and the first lower air chamber sealing plate 4 form an upper air chamber 8, and the second upper air chamber sealing plate 7 and the second lower air chamber sealing plate 6 form a lower air chamber 5. The first upper air chamber sealing plate 2 and the second upper air chamber sealing plate 7 are provided with several linearly arranged gas flow channels 9. Gas outlets 12 are provided at both ends of the gas flow channels 9, and vent holes 10 are provided in the middle of the gas flow channels 9. The design purpose of the gas flow channels 9 and the gas outlets 12 is to enable the gas to form a dynamically balanced gas film in it, so that the continuous gas will not accumulate excessively in the gas film and change its state.

[0032] like Figure 9 As shown, the principle of air film generation in the existing air cushion conveyor device is as follows: multiple injection points are located below the belt, with greater force at the location directly opposite the air outlet and less force in other areas. This can cause the belt to deform easily, which can affect the accumulation of materials. Uneven belt force can easily cause belt displacement.

[0033] The air film generation principle of the air cushion conveying device of the present invention is as follows: a vent 10 is provided in the middle of the first upper air chamber sealing plate 2, and the vent 10 is located in the middle of the gas flow channel 9. Gas outlets 12 are respectively provided on both sides of the gas flow channel 9. When the airflow enters above the first upper air chamber sealing plate 2, the airflow is more easily split to both sides, especially at the moment when the belt floats up. The present invention is more conducive to the stability of the belt. In contrast, the existing air cushion conveying device is prone to belt shaking.

[0034] Adjacent gas channels 9 are connected by a connecting air port 11. Each gas channel 9 is a shuttle-shaped groove. Each pair of adjacent gas channels is connected by two symmetrical connecting air ports, allowing gas to accumulate within its constrained area and generate sufficient upward thrust to lift the conveyor belt. Both the first upper air chamber sealing plate 2 and the second upper air chamber sealing plate 7 are equipped with baffles 13. The baffles 13 divide the gas film into multiple regions to ensure the integrity of the gas gap film's shape and the overall stability of the conveying process.

[0035] Specifically, the first upper air chamber sealing plate 2 and the second upper air chamber sealing plate 7 are arc-shaped plates, and the first lower air cavity sealing plate 4 and the second lower air cavity sealing plate 6 are multi-folded plates concave downward; a strip-shaped mounting groove is formed in the inner wall of the main groove box support 3, the second lower air cavity sealing plate 6 is hung on the strip-shaped mounting groove, and the second upper air chamber sealing plate 7 is overlapped on the second lower air cavity sealing plate 6; the first lower air cavity sealing plate 4 is hung on the top of the main groove box support 3, and the first upper air chamber sealing plate 2 is overlapped on the first lower air cavity sealing plate 4. The design is beneficial to installation and disassembly, and facilitates later maintenance.

[0036] The preferred scheme is shown in Figure 11 The upper air chamber 8 and the lower air chamber 5 of the air cushion conveying device are respectively connected with an upper air chamber gas supply branch pipe and a lower air chamber gas supply branch pipe, the upper air chamber gas supply branch pipe is provided with an upper air chamber gas pressure regulating valve 14, the lower air chamber gas supply branch pipe is provided with a lower air chamber gas pressure regulating valve 15, the upper air chamber gas supply branch pipe and the lower air chamber gas supply branch pipe are connected with a total gas supply pipe, the total gas supply pipe is connected with an air compressor 16; the outlet of the upper air chamber gas pressure regulating valve 14 is provided with an upper air chamber inlet gas pressure gauge 21, and the outlet of the lower air chamber gas pressure regulating valve 15 is provided with a lower air chamber inlet gas pressure gauge 22.

[0037] Preferably, the upper air chamber gas pressure regulating valve 14 and the lower air chamber gas pressure regulating valve 15 are used for autonomously adjusting the opening degree of the valve according to the size of the preset outlet pressure value.

[0038] An air conveyor corridor 17 is installed outside the air cushion conveying device, the air conveyor corridor 17 is provided with a wind power recovery pipeline at the top, the wind power recovery pipeline is sequentially provided with a filter 18, a wind supplementing machine 19 and a one-way valve 20 along the flow direction of the wind, and the output end of the one-way valve 20 is connected with the total gas supply pipe.

[0039] The air cushion conveying system collects the positive pressure air flow around the air cushion conveying system and supplements the air flow into the total gas supply pipe, so that the power consumption of the air compressor 16 can be reduced.

[0040] Preferably, the operation method of the air cushion conveying system comprises the following steps:

[0041] S1: the air compressor 16, the upper air chamber gas pressure regulating valve 14 and the lower air chamber gas pressure regulating valve 15 are started, when the air cushion conveying system is empty, the opening degree of the upper air chamber gas pressure regulating valve 14 and the lower air chamber gas pressure regulating valve 15 is adjusted to be consistent, the upper layer feeding belt 101 and the lower layer return belt 102 are floated, and the air film is generated on the lower surfaces of the upper layer feeding belt 101 and the lower layer return belt 102;

[0042] S2: when the upper layer feeding belt 101 starts feeding, the opening degree of the upper air chamber gas pressure regulating valve 14 is increased to make the upper layer feeding belt 101 continue to maintain the floating state, and the pressure values of the upper air chamber inlet gas pressure gauge 21 and the lower air chamber inlet gas pressure gauge 22 are recorded, which are the working pressure values;

[0043] S3: start the air supplementing machine 19, air in the conveyor corridor 17 is sucked into the air recycling pipe, dust in the air recycling pipe is filtered by the filter 18, and clean air is supplemented into the total air pipe;

[0044] S4: under the condition that the pressure values of the working pressure of the upper air chamber air inlet pressure gauge 21 and the lower air chamber air inlet pressure gauge 22 are constant, the upper air chamber air pressure regulating valve 14 and the lower air chamber air pressure regulating valve 15 are adaptively adjusted.

[0045] The above-described embodiments are merely preferred technical solutions of the present application, and should not be regarded as a limitation on the present application. The protection scope of the present application should be the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. An air cushion conveyor system characterized by: An air cushion conveying device is adopted, the upper air chamber (8) and the lower air chamber (5) of the air cushion conveying device are connected with the upper air chamber gas branch pipe and the lower air chamber gas branch pipe respectively, the upper air chamber gas branch pipe is provided with an upper air chamber gas pressure regulating valve (14), the lower air chamber gas branch pipe is provided with a lower air chamber gas pressure regulating valve (15), the upper air chamber gas branch pipe and the lower air chamber gas branch pipe are connected with a total gas supply pipe, the total gas supply pipe is connected with an air compressor (16); the outlet of the upper air chamber gas pressure regulating valve (14) is provided with an upper air chamber inlet gas pressure gauge, the outlet of the lower air chamber gas pressure regulating valve (15) is provided with a lower air chamber inlet gas pressure gauge; The air cushion conveying device comprises a conveying belt, the conveying belt comprises an upper layer feeding belt (101) and a lower layer return belt (102), a first upper air chamber sealing plate (2) is arranged below the upper layer feeding belt (101), a first lower air chamber sealing plate (4) is arranged below the first upper air chamber sealing plate (2), the lower layer return belt (102) is arranged below the first lower air chamber sealing plate (4), a second upper air chamber sealing plate (7) is arranged below the lower layer return belt (102), and a second lower air chamber sealing plate (6) is arranged below the second upper air chamber sealing plate (7). The first upper air chamber sealing plate (2), the first lower air chamber sealing plate (4), the second upper air chamber sealing plate (7) and the second lower air chamber sealing plate (6) are arranged in the main groove box support (3); the first upper air chamber sealing plate (2) and the first lower air chamber sealing plate (4) surround the upper air chamber (8), and the second upper air chamber sealing plate (7) and the second lower air chamber sealing plate (6) surround the lower air chamber (5); a plurality of linearly arranged gas flow channels (9) are arranged on the first upper air chamber sealing plate (2) and the second upper air chamber sealing plate (7), gas flow outlets (12) are arranged at the two ends of the gas flow channels (9), and air holes (10) are arranged at the middle portions of the gas flow channels (9). The two adjacent gas flow channels (9) are communicated through the communication channel openings (11). The gas flow channels (9) are shuttle-shaped grooves. The first upper air chamber sealing plate (2) and the second upper air chamber sealing plate (7) are arc-shaped plates, the first lower air chamber sealing plate (4) and the second lower air chamber sealing plate (6) are multi-folded plates which are concave downward, strip-shaped mounting grooves are formed in the inner wall of the main groove box support (3), the second lower air chamber sealing plate (6) is hung on the strip-shaped mounting grooves, and the second upper air chamber sealing plate (7) is overlapped on the second lower air chamber sealing plate (6); the first lower air chamber sealing plate (4) is hung on the top of the main groove box support (3), and the first upper air chamber sealing plate (2) is overlapped on the first lower air chamber sealing plate (4).

2. An air-cushion conveyor system according to claim 1, characterised in that: An air cushion conveying device is adopted, the upper air chamber (8) and the lower air chamber (5) of the air cushion conveying device are connected with the upper air chamber gas branch pipe and the lower air chamber gas branch pipe respectively, the upper air chamber gas branch pipe is provided with an upper air chamber gas pressure regulating valve (14), the lower air chamber gas branch pipe is provided with a lower air chamber gas pressure regulating valve (15), the upper air chamber gas branch pipe and the lower air chamber gas branch pipe are connected with a total gas supply pipe, the total gas supply pipe is connected with an air compressor (16); the outlet of the upper air chamber gas pressure regulating valve (14) is provided with an upper air chamber inlet gas pressure gauge, the outlet of the lower air chamber gas pressure regulating valve (15) is provided with a lower air chamber inlet gas pressure gauge; An air cushion conveying device is adopted, the upper air chamber (8) and the lower air chamber (5) of the air cushion conveying device are connected with the upper air chamber gas branch pipe and the lower air chamber gas branch pipe respectively, the upper air chamber gas branch pipe is provided with an upper air chamber gas pressure regulating valve (14), the lower air chamber gas branch pipe is provided with a lower air chamber gas pressure regulating valve (15), the upper air chamber gas branch pipe and the lower air chamber gas branch pipe are connected with a total gas supply pipe, the total gas supply pipe is connected with an air compressor (16); the outlet of the upper air chamber gas pressure regulating valve (14) is provided with an upper air chamber inlet gas pressure gauge, the outlet of the lower air chamber gas pressure regulating valve (15) is provided with a lower air chamber inlet gas pressure gauge;

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