Method of operating an air cushion transport system

Abstract

The operation method of the air cushion conveying system comprises the following steps: starting the air compressor, opening the upper air chamber pressure regulating valve and the lower air chamber pressure regulating valve, adjusting the opening degree of the upper air chamber pressure regulating valve and the lower air chamber pressure regulating valve and making them consistent when the air cushion conveying device is empty, making the upper feeding belt and the lower return belt float, increasing the opening degree of the upper air chamber pressure regulating valve when the upper feeding belt starts feeding, making the upper feeding belt continue to float, starting the air supplement machine, sucking the air flow in the conveyor corridor into the air recovery pipeline, filtering the dust in the air recovery pipeline by the filter, supplementing the clean air into the total air supply pipe, and making adaptive adjustment of the upper air chamber pressure regulating valve and the lower air chamber pressure regulating valve under the condition that the pressure value of the working pressure of the upper air chamber air inlet pressure gauge and the lower air chamber air inlet pressure gauge is constant. 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.

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 operation method of an air cushion conveying system. BACKGROUND

[0003] The air cushion belt conveyor is also known as an air cushion conveyor. The existing air cushion conveyor (for example, the air cushion conveyor disclosed in patent CN207890543U) still has problems of unreasonable air chamber structure, unstable air flow and air pressure, and uncontrollable precision. In addition, the existing air cushion belt conveyor is inconvenient to install and maintain. SUMMARY

[0004] In view of the technical problems in the background art, the operation method of 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 operation method of an air cushion conveying system adopts an air cushion conveying system, wherein the air cushion conveying system comprises an air compressor, an upper air chamber air pressure regulating valve, a lower air chamber air pressure regulating valve, a wind supplementing machine, a conveyor corridor, a filter, an upper air chamber inlet pressure gauge and a lower air chamber inlet pressure gauge; the operation steps are as follows:

[0007] S1: Turn on the air compressor, the upper air chamber air pressure regulating valve and the lower air chamber air pressure regulating valve, and when the air cushion conveying device is empty, adjust the opening degree of the upper air chamber air pressure regulating valve and the lower air chamber air pressure regulating valve to be consistent, so that the upper layer feeding belt and the lower layer return belt float, and an air film is generated on the lower surface of the upper layer feeding belt and the lower layer return belt;

[0008] S2: When the upper layer feeding belt starts feeding, increase the opening degree of the upper air chamber air pressure regulating valve to keep the upper layer feeding belt in a floating state, and record the pressure values of the upper air chamber inlet pressure gauge and the lower air chamber inlet pressure gauge, which are the working pressures;

[0009] S3: Turn on the wind supplementing machine, and draw the air flow in the conveyor corridor into the wind power recovery pipeline. The dust in the wind power recovery pipeline is filtered by the filter, and the clean air is supplemented into the total air supply pipe;

[0010] S4: under the condition that the pressure values of the working pressure of the upper air chamber inlet pressure gauge and the lower air chamber inlet pressure gauge are constant, the upper air chamber pressure regulating valve and the lower air chamber pressure regulating valve are adaptively adjusted.

[0011] Preferably, the air cushion conveying system comprises an air cushion conveying device, a conveyor corridor is externally mounted on the air cushion conveying device, a wind power recovery pipeline is arranged on the top of the conveyor corridor, a filter, a air 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 one-way valve is connected with the total air supply pipeline.

[0012] Preferably, the upper air chamber pressure regulating valve and the lower air chamber pressure regulating valve are pressure regulating valves.

[0013] Preferably, the air cushion conveying device comprises a conveying belt, the conveying belt comprises an upper feeding belt and a lower return belt, a first upper air chamber sealing plate is arranged below the upper feeding belt, a first lower air chamber sealing plate is mounted below the first upper air chamber sealing plate, the lower return belt is below the first lower air chamber sealing plate, a second upper air chamber sealing plate is arranged below the lower return belt, and a second lower air chamber sealing plate is arranged below the second upper air chamber sealing plate.

[0014] The first upper air chamber sealing plate, the first lower air chamber sealing plate, the second upper air chamber sealing plate and the second lower air chamber sealing plate are mounted in the main groove box support; the first upper air chamber sealing plate and the first lower air chamber sealing plate enclose an upper air chamber, and the second upper air chamber sealing plate and the second lower air chamber sealing plate enclose a lower air chamber; a plurality of linearly arranged gas flow channels are arranged on the first upper air chamber sealing plate and the second upper air chamber sealing plate, gas flow outlets are arranged at both ends of the gas flow channels, and air holes are arranged at the middle portions of the gas flow channels.

[0015] The two adjacent gas flow channels are connected through a communication channel (communication;

[0016] The gas flow channel is a shuttle-shaped groove.

[0017] The upper air chamber and the lower air chamber of the air cushion conveying device are respectively connected with an upper air chamber air supply branch pipeline and a lower air chamber air supply branch pipeline, the upper air chamber air supply branch pipeline is provided with an upper air chamber pressure regulating valve, the lower air chamber air supply branch pipeline is provided with a lower air chamber pressure regulating valve, the upper air chamber air supply branch pipeline and the lower air chamber air supply branch pipeline are connected with a total air supply pipeline, the total air supply pipeline is connected with an air compressor, and the outlet of the upper air chamber pressure regulating valve is provided with an upper air chamber inlet pressure gauge, and the outlet of the lower air chamber pressure regulating valve is provided with a lower air chamber inlet pressure gauge.

[0018] Preferably, the first upper air chamber sealing plate and the second upper air chamber sealing plate are arc-shaped plates, the first lower air chamber sealing plate and the second lower air chamber sealing plate are downwardly concave multi-fold plates, a strip-shaped mounting groove is formed in the inner wall of the main groove box support, the second lower air chamber sealing plate is hung on the strip-shaped mounting groove, the second upper air chamber sealing plate is overlapped on the second lower air chamber sealing plate, the first lower air chamber sealing plate is hung on the top of the main groove box support, and the first upper air chamber sealing plate is overlapped on the first lower air chamber sealing plate.

[0019] This patent can achieve the following beneficial effects:

[0020] 1. The air film formation process in this invention is stable, which helps to improve the smoothness and stability of belt operation, while ensuring the safety and reliability of the entire device.

[0021] 2. In this invention, air films are provided under both the upper feeding belt and the lower return belt, resulting in low resistance in the overall belt drive. In contrast, existing air cushion conveyor systems only have air films on the upper belt, causing the lower belt to pull on the upper belt, increasing the pressure required for air film formation and hindering energy conservation.

[0022] 3. This invention can collect the positive pressure airflow around the operating method of the air cushion delivery system and replenish the airflow into the main air supply pipe, which can reduce the power consumption of the air compressor. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a three-dimensional structural diagram of the air cushion delivery device of the present invention. Figure One ;

[0025] Figure 2 This is an unfolded view of the air cushion conveying device of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the air cushion delivery device of the present invention. Figure Two ;

[0027] Figure 4 This is a structural diagram of the first upper air chamber of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation of the air cushion delivery device of the present invention;

[0029] Figure 6 This is a cross-sectional view of the air cushion conveying device of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the air cushion delivery device of the present invention. Figure Three ;

[0031] Figure 8 This is a diagram showing the airflow direction between the first upper air chamber seal and the upper feeding belt of the present invention.

[0032] Figure 9 Here is a structural diagram of an existing air cushion delivery device;

[0033] Figure 10 A diagram showing the airflow direction under the belt of an existing air cushion conveyor system;

[0034] Figure 11This is a structural diagram of the air cushion delivery system of the present invention.

[0035] In the diagram: upper feeding belt 101, lower return belt 102, first upper air chamber sealing plate 2, main trough bracket 3, first lower air chamber sealing plate 4, lower air chamber 5, second lower air chamber sealing plate 6, second upper air chamber sealing plate 7, upper air chamber 8, gas flow channel 9, vent hole 10, connecting air passage 11, gas outlet 12, partition 13, upper air chamber pressure regulating valve 14, lower air chamber pressure regulating valve 15, air compressor 16, conveyor corridor 17, filter 18, make-up air fan 19, one-way valve 20, upper air chamber inlet pressure gauge 21, lower air chamber inlet pressure gauge 22. Detailed Implementation

[0036] Preferred solutions include Figures 1 to 8 As shown, an operation method of an air cushion conveying system is provided. The system includes an air cushion conveying device. The air cushion conveying device includes a conveyor belt, which includes an upper feeding belt 101 and a lower return belt 102. A first upper air chamber sealing plate 2 is provided 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 provided below the lower return belt 102. A second lower air chamber sealing plate 6 is provided 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. The first lower air chamber sealing plate 4 and the second lower air chamber sealing plate 6 also have the same structure.

[0037] 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.

[0038] 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.

[0039] The air film generation principle in the air cushion conveying device of the present application is that the middle part of the first upper air chamber sealing plate 2 is provided with an air passage 10, and the air passage 10 is located in the middle part of the gas flow channel 9, and the two sides of the gas flow channel 9 are respectively provided with gas flow outlets 12. When the air flow enters above the first upper air chamber sealing plate 2, the air flow is more likely to flow to both sides, especially at the moment when the belt floats, the present application is more conducive to the stability of the belt. The existing air cushion conveying device is easy to cause the belt to shake.

[0040] The two adjacent gas flow channels 9 are communicated through the communication air channel openings 11. The gas flow channel 9 is a shuttle-shaped groove. Each of the two adjacent gas flow channels is communicated by two symmetrical communication air channel openings, so that the gas is accumulated in the constrained range to generate sufficient upward thrust to lift the belt. The first upper air chamber sealing plate 2 and the second upper air chamber sealing plate 7 are both provided with a partition plate 13, which can divide the air film into multiple areas to ensure the integrity of the air gap air film and the stability of the overall conveying.

[0041] 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; the inner wall of the main groove box support 3 is provided with a strip-shaped mounting groove, 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. This design is conducive to installation and disassembly, and is convenient for later maintenance.

[0042] The preferred scheme is as 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.

[0043] Preferably, the upper air chamber gas pressure regulating valve 14 and the lower air chamber gas pressure regulating valve 15 are pressure regulating valves. Used for independently adjusting the opening degree of the valve according to the size of the preset outlet pressure value.

[0044] The air cushion conveying device is externally provided with a conveyor corridor 17, the top of the conveyor corridor 17 is provided with a wind power recovery pipeline, 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.

[0045] 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 air supply pipe, so that the power consumption of the air compressor 16 can be reduced.

[0046] Preferably, the operation method of the air cushion conveying system comprises the following steps.

[0047] S1: start the air compressor 16, the upper air chamber air pressure regulating valve 14 and the lower air chamber air pressure regulating valve 15, when the air cushion conveying system is empty, adjust the opening degree of the upper air chamber air pressure regulating valve 14 and the lower air chamber air pressure regulating valve 15 to be consistent, make the upper layer feeding belt 101 and the lower layer return belt 102 float, and generate an air film on the lower surface of the upper layer feeding belt 101 and the lower layer return belt 102;

[0048] S2: when the upper layer feeding belt 101 starts feeding, increase the opening degree of the upper air chamber air pressure regulating valve 14 to make the upper layer feeding belt 101 continue to float, record the pressure values of the upper air chamber air inlet pressure table 21 and the lower air chamber air inlet pressure table 22, and the pressure values are working pressures;

[0049] S3: start the air supplementing machine 19, draw the air flow in the conveyor corridor 17 into the air flow recycling pipe, filter the dust in the air flow recycling pipe by the filter 18, and supplement the clean air into the total air supply pipe;

[0050] S4: ensure that the pressure values of the upper air chamber air inlet pressure table 21 and the lower air chamber air inlet pressure table 22 are constant under the working pressure, and make adaptive adjustment of the upper air chamber air pressure regulating valve 14 and the lower air chamber air pressure regulating valve 15.

[0051] The above embodiment is only a preferred technical solution of the present application, and should not be regarded as a limitation of the present application, and the protection scope of the present application should be the technical solution recorded in the claims, including the equivalent replacement solution of the technical features recorded in the claims. That is, the equivalent replacement improvement within this range is also within the protection scope of the present application.

Claims

1. A method for operating an air cushion delivery system, characterized in that: An air cushion conveying system was adopted, which includes an air compressor (16), an upper air chamber pressure regulating valve (14), a lower air chamber pressure regulating valve (15), a makeup air fan (19), a conveyor corridor (17), a filter (18), an upper air chamber inlet pressure gauge (21), and a lower air chamber inlet pressure gauge (22); the operation steps are as follows: S1: Turn on the air compressor (16), the upper air chamber pressure regulating valve (14) and the lower air chamber pressure regulating valve (15). When the air cushion conveyor is unloaded, adjust the opening of the upper air chamber pressure regulating valve (14) and the lower air chamber pressure regulating valve (15) to make them consistent, so that the upper feeding belt (101) and the lower return belt (102) float up, and an air film is generated on the lower surface of the upper feeding belt (101) and the lower return belt (102). S2: When the upper feeding belt (101) starts feeding, increase the opening of the upper air chamber pressure regulating valve (14) to keep the upper feeding belt (101) floating. Record the pressure values ​​of the upper air chamber inlet pressure gauge (21) and the lower air chamber inlet pressure gauge (22). This pressure value is the working pressure. S3: Turn on the air supply fan (19) to draw the airflow in the conveyor corridor (17) into the air recovery pipe. The dust in the air recovery pipe is filtered by the filter (18), and the clean air is then supplied into the main air supply pipe. S4: Under the condition that the working pressure values ​​of the upper air chamber inlet pressure gauge (21) and the lower air chamber inlet pressure gauge (22) are constant, the upper air chamber pressure regulating valve (14) and the lower air chamber pressure regulating valve (15) shall be adjusted accordingly. The air cushion conveying device includes a conveyor belt, which includes an upper feeding belt (101) and a lower return belt (102). A first upper air chamber sealing plate (2) is provided 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), a lower return belt (102) is located below the first lower air chamber sealing plate (4), a second upper air chamber sealing plate (7) is provided below the lower return belt (102), and a second lower air chamber sealing plate (6) is provided 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 installed inside the main body slot box 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 a number of linearly arranged gas flow channels (9), the two ends of the gas flow channels (9) are provided with gas outlets (12), and the middle part of the gas flow channels (9) is provided with vent holes (10); Two adjacent gas channels (9) are connected by a connecting gas port (11); The gas flow channel (9) is a shuttle-shaped groove; The upper air chamber (8) and lower air chamber (5) of the air cushion conveying device are respectively connected to the upper air chamber air supply branch pipe and the lower air chamber air supply branch pipe. The upper air chamber air supply branch pipe is equipped with an upper air chamber air pressure regulating valve (14), and the lower air chamber air supply branch pipe is equipped with a lower air chamber air pressure regulating valve (15). The upper air chamber air supply branch pipe and the lower air chamber air supply branch pipe are connected to the main air supply pipe, and the main air supply pipe is connected to the air compressor (16). The outlet of the upper air chamber air pressure regulating valve (14) is equipped with an upper air chamber inlet pressure gauge (21), and the outlet of the lower air chamber air pressure regulating valve (15) is equipped with a lower air chamber inlet pressure gauge (22).

2. The operation method of the air cushion delivery system according to claim 1, characterized in that: The air cushion conveying system includes an air cushion conveying device. A conveyor corridor (17) is installed outside the air cushion conveying device. A wind recovery pipe is provided at the top of the conveyor corridor (17). A filter (18), a makeup air fan (19), and a one-way valve (20) are arranged sequentially along the wind flow direction on the wind recovery pipe. The output end of the one-way valve (20) is connected to the main air supply pipe.

3. The operation method of the air cushion delivery system according to claim 1, characterized in that: The upper air chamber pressure regulating valve (14) and the lower air chamber pressure regulating valve (15) are pressure regulating valves.

4. The operation method of the air cushion delivery system according to claim 1, characterized in that: 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 chamber sealing plate (4) and the second lower air chamber sealing plate (6) are multi-folded plates with downward indentation; the inner wall of the main body slot box bracket (3) is provided with a strip-shaped installation groove, the second lower air chamber sealing plate (6) is hung on the strip-shaped installation groove, and the second upper air chamber sealing plate (7) overlaps 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 body slot box bracket (3), and the first upper air chamber sealing plate (2) overlaps on the first lower air chamber sealing plate (4).

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