Air cushion belt conveyor

Abstract

The utility model belongs to the technical field of air cushion conveyors, and discloses an air cushion belt conveyor which comprises a supporting frame and a high-pressure air source fan, an upper high-pressure air chamber which is divided into a left air chamber and a right air chamber is installed on the supporting frame, and an air volume control valve is installed on a pipeline through which the upper high-pressure air chamber is communicated with the high-pressure air source fan. An upper disc groove is formed in the top of the upper high-pressure air chamber, a conveying belt is in lap joint with the upper surface of the upper disc groove, and a plurality of air outlet holes communicated with an air inlet of the high-pressure air source fan and a belt deviation preventing device are arranged at the two ends of the upper disc groove respectively; by arranging the air outlet holes and the air return pipeline on the upper disc groove, cyclic utilization of pressurized air is conveniently achieved, energy is saved, meanwhile, the circulated pressurized air cannot enter the upper side space of conveyed materials and cannot make contact with the materials, and the cleanliness of the circulated pressurized air is kept; whether the conveying belt deflects or not can be conveniently detected, and then the conveying belt is kept balanced by adjusting the air volume of the left air chamber and the right air chamber.

Description

Technical Field

[0001] The utility model relates to an air cushion belt conveyor, belonging to the technical field of air cushion conveyors. Background Art

[0002] An air cushion belt conveyor is a belt conveyor that uses a thin air film to support the conveyor belt and the materials on it. It replaces the rollers of an ordinary roller belt conveyor with a high-pressure air chamber with holes. When a high-pressure air source provides air with a certain pressure and flow rate into the high-pressure air chamber, the pressurized air in the high-pressure air chamber escapes through the small holes on the disc groove, forming a layer of air film between the conveyor belt and the disc groove, supporting the conveyor belt and the materials on it, so that there is no mechanical friction between the conveyor belt and the disc groove, so it is very energy-saving. In the air cushion conveyor of the prior art, when the high-pressure fan provides pressurized air to lift the conveyor belt, the pressurized air will flow out from the edge of the conveyor belt and gather into the cavity formed between the material and the cover plate. At this time, the pressurized air will bring up the dust on the material. If the pressurized air containing dust is directly discharged out of the air cushion conveyor, it will not meet the emission standards and cause dust pollution. If the pressurized air containing dust is to be further purified, it is necessary to increase the purification equipment for gas treatment, which will increase the cost, occupy the site, and make the structure complicated. At the same time, the traditional air cushion conveyor does not have a device to maintain the balance of the conveyor belt. When the material on the conveyor belt is unevenly loaded, the conveyor belt will tilt to the side with more material, and then rub against the disc groove, affecting the conveying efficiency and reducing the service life of the conveyor belt. Therefore, there is a need for an air cushion belt conveyor that can prevent the pressurized air from bringing up the dust on the material and keep the conveyor belt balanced. Utility Model Content

[0003] The utility model aims to provide an air cushion belt conveyor.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an air cushion belt conveyor, comprising a support frame and a high-pressure air source fan, an upper high-pressure air chamber is fixedly installed on the upper part of the support frame, a longitudinal partition is arranged outside the upper high-pressure air chamber, and the upper high-pressure air chamber is evenly divided into a left air chamber and a right air chamber, the left air chamber and the right air chamber are respectively connected with the air outlet of the high-pressure air source fan through a first air inlet pipe, an air volume control valve for controlling the air intake volume of the left air chamber and the right air chamber is installed on the first air inlet pipe, an upper plate groove is installed on the top of the upper high-pressure air chamber, both ends of the upper plate groove are fixedly installed on the top of the support frame, an upper cover plate is fixedly installed on the top of the upper plate groove, and a closed travel air chamber is formed, a plurality of vents connecting the travel air chamber and the upper high-pressure air chamber are opened on the upper surface of the upper plate groove, a conveyor belt is overlapped on the upper surface of the upper plate groove, the width of the upper plate groove is greater than the width of the upper high-pressure air chamber, and the upper plate groove is located outside the upper high-pressure air chamber A plurality of air outlet holes are respectively provided at both ends of the upper plate groove, and return air hoods I are connected to the lower surfaces of the two ends of the upper plate groove and the outer sides of the air outlet holes, and the return air hood I is connected to the air inlet of the high-pressure gas source fan through the return air pipe I, and a plurality of belt anti-deviation devices protruding from the upper surface of the upper plate groove are respectively installed on the upper surfaces of the two ends of the upper plate groove and below the conveyor belt, a lower plate groove is fixedly installed at the lower part of the support frame, a sealing plate is fixedly connected to the bottom of the lower plate groove, and a closed lower high-pressure air chamber is formed, and the lower high-pressure air chamber is connected to the return air pipe I through the second air inlet pipe, a lower cover plate is fixedly installed on the top of the lower plate groove, and a closed return air chamber is formed, a plurality of air vents connecting the return air chamber and the lower high-pressure air chamber are provided on the upper surface of the lower plate groove, and a plurality of air outlet holes are provided on the side of the lower cover plate, and a return air hood II is connected to the outer wall of the lower plate groove and the outer side of the air outlet holes, and the return air hood II is connected to the air inlet of the high-pressure gas source fan through the return air pipe II.

[0005] Preferably, the lower surface of the upper plate groove is tightly overlapped on the top of the upper high-pressure air chamber and the longitudinal partition, and the top of the upper high-pressure air chamber and the top of the longitudinal partition are respectively provided with rubber sealing pads.

[0006] Preferably, the upper plate groove is an arc-shaped plate with a concave upper surface, the lower plate groove is an arc-shaped plate with a convex upper surface, and the cross-sections of the upper cover plate and the lower cover plate are arc-shaped or herringbone-shaped.

[0007] Preferably, the air inlet of the high-pressure air source fan is provided with a dust filter, the end of the return air duct II away from the return air hood II is connected to the air inlet of the dust filter of the high-pressure air source fan, and the end of the return air duct I away from the return air hood I is connected to the air outlet of the dust filter.

[0008] Preferably, the dust filter is a bag filter.

[0009] Preferably, the air outlet of the dust filter is provided with a one-way valve.

[0010] Preferably, the belt anti-deviation device includes a support plate fixedly connected to the upper surface of the upper disc groove, and a pressure sensor is fixedly connected to the upper end of the support plate.

[0011] Preferably, the surface of the belt anti-deviation device, the upper surface of the upper plate groove and the upper surface of the lower plate groove are provided with a Teflon self-lubricating and wear-resistant outer lining layer.

[0012] Preferably, the air volume control valve is a three-way solenoid valve or a flow valve separately arranged on an air intake pipe connected to the left air chamber and the right air chamber.

[0013] Beneficial Effects

[0014] The air cushion belt conveyor of the utility model is convenient for realizing the recycling of pressurized air and saving energy through the cooperation of the high-pressure air source fan, the upper high-pressure air chamber, the air outlet holes on the upper plate groove, the return air cover I and the return air duct I. At the same time, the pressurized air supporting the conveying belt flows downward to the return air cover I through the air outlet holes on the upper plate groove. During the whole process, the pressurized air will not enter the upper space of the conveyed material, will not contact the material, will not stir up the dust on the material, and will avoid the dust on the material from polluting the pressurized air, so as to maintain the cleanliness of the circulating pressurized air. By setting the belt anti-deflection device, it is convenient to detect whether the conveying belt conveying the material is deflected, and then by adjusting the air volume of the left and right air chambers of the upper high-pressure air chamber, the conveying belt is kept balanced. By setting a dust filter at the air inlet of the high-pressure air source fan, it is convenient to filter out impurities in the air entering the high-pressure air source fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in .

[0017] In the figure: 1. support frame; 2. high-pressure air source fan; 3. bracket; 4. upper high-pressure air chamber; 5. longitudinal partition; 6. left air chamber; 7. right air chamber; 8. first air inlet pipe; 9. air volume control valve; 10. upper plate groove; 11. upper cover plate; 12. transport air chamber; 13. vent; 14. conveyor belt; 15. air outlet; 16. return air hood I; 17. return air duct I; 18. belt anti-deviation device; 19. lower plate groove; 20. sealing plate; 21. lower high-pressure air chamber; 22. second air inlet pipe; 23. lower cover plate; 24. return air chamber; 25. return air hood II; 26. return air duct II; 27. rubber sealing pad; 28. dust filter; 29. ​​one-way valve; 30. support plate; 31. pressure sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-2As shown, the utility model provides a technical solution: an air cushion belt conveyor, comprising a support frame 1 and a high-pressure air source fan 2, an upper high-pressure air chamber 4 is fixedly installed on the upper part of the support frame 1 through a bracket 3, a longitudinal partition 5 is arranged in the upper high-pressure air chamber 4, and the upper high-pressure air chamber 4 is evenly divided into a left air chamber 6 and a right air chamber 7, the left air chamber 6 and the right air chamber 7 are respectively connected to the air outlet of the high-pressure air source fan 2 through a first air inlet pipe 8, the high-pressure air source fan 2 in this embodiment is a multi-stage centrifugal fan with controllable air volume, an air volume control valve 9 for controlling the air intake volume of the left air chamber 6 and the right air chamber 7 is installed on the first air inlet pipe 8, the air volume control valve 9 is a three-way solenoid valve or is separately arranged in communication with the left air chamber 6 and the right air chamber 7 The flow valve on the intake pipe, the top of the upper high-pressure air chamber 4 is installed with an upper plate groove 10, the lower surface of the upper plate groove 10 is closely overlapped on the top of the upper high-pressure air chamber 4 and the longitudinal partition 5, the top of the upper high-pressure air chamber 4 and the top of the longitudinal partition 5 are respectively provided with rubber sealing gaskets 27, the two ends of the upper plate groove 10 are fixedly installed with the top of the support frame 1 by bolts, the top of the upper plate groove 10 is fixedly installed with an upper cover plate 11 by bolts, and a closed travel air chamber 12 is formed, a plurality of vents 13 connecting the travel air chamber 12 and the upper high-pressure air chamber 4 are opened on the upper surface of the upper plate groove 10, a conveyor belt 14 is overlapped on the upper surface of the upper plate groove 10, the conveyor belt 14 is located in the travel air chamber 12, and the upper plate groove 10 The width is greater than that of the upper high-pressure air chamber 4. A plurality of air outlets 15 are respectively provided at both ends of the upper plate groove 10 located outside the upper high-pressure air chamber 4. Return air covers Ⅰ 16 are connected to the lower surfaces of both ends of the upper plate groove 10 and the outer sides of the air outlets 15. The return air covers Ⅰ 16 are communicated with the air inlet of the high-pressure air source fan 2 through the return air pipe Ⅰ 17. A plurality of belt anti-deviation devices 18 protruding from the upper surface of the upper plate groove 10 are respectively installed on the upper surfaces of both ends of the upper plate groove 10 and below the conveyor belt 14. The belt anti-deviation device 18 includes a support plate 30 fixedly connected to the upper surface of the upper plate groove 10, and a pressure sensor 31 is fixedly connected to the upper end of the support plate 30. A lower plate groove 19 is fixedly installed at the lower part of the support frame 1. A sealing plate 20 is fixedly connected to the bottom of the disc groove 19 to form a closed lower high-pressure air chamber 21, which is connected to the return air duct I17 through the second air inlet pipe 22. A lower cover plate 23 is fixedly installed on the top of the lower disc groove 19 to form a closed return air chamber 24. The return section of the conveyor belt 14 is movably overlapped on the upper surface of the lower disc groove 19. A plurality of vents 13 connecting the return air chamber 24 and the lower high-pressure air chamber 21 are provided on the upper surface of the lower disc groove 19. A plurality of air outlet holes are provided on the side of the lower cover plate 23. A return air hood II 25 is connected to the outer side of the air outlet on the outer wall of the lower disc groove 19. The return air hood II 25 is connected to the air inlet of the high-pressure air source fan 2 through the return air duct II 26.

[0020] Specifically, the upper plate groove 10 is an arc-shaped plate with a concave upper surface, the lower plate groove 19 is an arc-shaped plate with a convex upper surface, and the cross-sections of the upper cover plate 11 and the lower cover plate 23 are arc-shaped or herringbone-shaped.

[0021] Specifically, a dust filter 28 is provided at the air inlet of the high-pressure air source fan 2 to filter out impurities in the air entering the high-pressure air source fan 2. The end of the return air duct II 26 away from the return air cover II 25 is connected to the air inlet of the dust filter 28 of the high-pressure air source fan 2, and the end of the return air duct I 17 away from the return air cover I 16 is connected to the air outlet of the dust filter 28, and then connected to the air inlet of the high-pressure air source fan 2. The dust filter 28 is a bag dust collector, and the air outlet of the dust filter 28 is provided with a one-way valve 29 to prevent the return pressurized air from escaping from the dust filter 28.

[0022] Specifically, the surface of the belt anti-deviation device 18, the upper surface of the upper plate groove 10 and the upper surface of the lower plate groove 19 are provided with a Teflon self-lubricating and wear-resistant outer lining layer.

[0023] The working process of the utility model is that when conveying materials, the high-pressure air source fan 2 conveys the pressurized air to the left air chamber 6 and the right air chamber 7 of the upper high-pressure air chamber 4 through the first air inlet pipe 8, and the pressurized air enters the travel air chamber 12 through the air vent 13 on the upper plate groove 10, and forms an air film with a certain pressure between the conveying belt 14 and the upper plate groove 10 to support the conveying belt 14 and the materials above it. After supporting the conveying belt 14, the pressurized air enters the return air cover Ⅰ16 through the air outlet holes 15 at both ends of the top of the upper plate groove 10, and flows back to the air inlet of the high-pressure air source fan 2 through the return air pipe Ⅰ17, so as to realize the circulation of pressurized air and save energy. When the material on the conveying belt 14 is unevenly loaded, the conveying belt 14 will tilt to the side with more materials, and then will compress the belt anti-deviation device 18 on the left or right side. After the pressure sensor 31 on the belt anti-deviation device 18 detects the pressure, the high-pressure air source fan 2 increases the air supply volume, and adjusts the air volume control valve 9 to transport it to the same side as the material. The left air chamber 6 or the right air chamber 7 on the side can increase the support strength for the side of the conveying belt 14 with more materials, and keep the conveying belt 14 balanced; the air cushion belt conveyor of the utility model is convenient for realizing the recycling of pressurized air and saving energy through the cooperation of the high-pressure air source fan, the upper high-pressure air chamber, the air outlet on the upper plate groove, the return air cover Ⅰ, and the return air duct Ⅰ. At the same time, the pressurized air supporting the conveying belt flows downward to the return air cover Ⅰ through the air outlet on the upper plate groove. During the whole process, the pressurized air will not enter the upper side space of the conveyed material, will not contact the material, will not stir up the dust on the material, and avoid the dust on the material from polluting the pressurized air, so as to maintain the cleanliness of the circulating pressurized air. By setting the belt anti-deflection device, it is convenient to detect whether the conveying belt conveying the material is deflected, and then by adjusting the air volume of the left and right air chambers of the upper high-pressure air chamber, the conveying belt is kept balanced. By setting a dust filter at the air inlet of the high-pressure air source fan, it is convenient to filter out impurities in the air entering the high-pressure air source fan.

Claims

1. An air cushion belt conveyor, comprising a support frame (1) and a high-pressure air source fan (2), characterized in that: An upper high-pressure air chamber (4) is fixedly mounted on the upper part of the support frame (1). A longitudinal partition (5) is arranged inside the upper high-pressure air chamber (4), and the upper high-pressure air chamber (4) is evenly divided into a left air chamber (6) and a right air chamber (7). The left air chamber (6) and the right air chamber (7) are respectively connected to the air outlet of the high-pressure air source fan (2) through a first air inlet pipe (8). An air volume control valve (9) for controlling the air volume of the left air chamber (6) and the right air chamber (7) is installed on the first air inlet pipe (8). An upper plate groove (10) is installed on the top of the upper high-pressure air chamber (4). Both ends of the upper plate groove (10) are connected to the support frame (1). The upper plate trough (10) is fixedly installed on the top of the frame (1), an upper cover plate (11) is fixedly installed on the top of the upper plate trough (10), and a closed travel air chamber (12) is formed. The upper surface of the upper plate trough (10) is provided with a plurality of vents (13) connecting the travel air chamber (12) and the high-pressure air chamber (4). A conveyor belt (14) is overlapped on the upper surface of the upper plate trough (10). The width of the upper plate trough (10) is greater than the width of the upper high-pressure air chamber (4). The two ends of the upper plate trough (10) located outside the upper high-pressure air chamber (4) are respectively provided with a plurality of air outlet holes (15). The lower ends of the two ends of the upper plate trough (10) are provided with a plurality of air outlet holes (15). The outer side of the air outlet (15) is connected with a return air cover I (16), and the return air cover I (16) is connected with the air inlet of the high-pressure air source fan (2) through a return air pipe I (17). The upper surfaces of both ends of the upper plate groove (10) and the lower side of the conveyor belt (14) are respectively installed with a plurality of belt anti-deviation devices (18) protruding from the upper surface of the upper plate groove (10). The lower part of the support frame (1) is fixedly installed with a lower plate groove (19), and the bottom of the lower plate groove (19) is fixedly connected with a sealing plate (20), thereby forming a closed lower high-pressure air chamber (21), and the lower high-pressure air chamber (21) is connected with the upper surface of the upper plate groove (10) and the lower surface of the conveyor belt (14). The second air inlet pipe (22) is connected to the return air pipe I (17). A lower cover plate (23) is fixedly installed on the top of the lower plate groove (19) to form a closed return air chamber (24). The upper surface of the lower plate groove (19) is provided with a plurality of air vents (13) connecting the return air chamber (24) and the lower high-pressure air chamber (21). The side of the lower cover plate (23) is provided with a plurality of air outlet holes. A return air cover II (25) is connected to the outer side of the air outlet holes on the outer wall of the lower plate groove (19). The return air cover II (25) is connected to the air inlet of the high-pressure air source fan (2) through the return air pipe II (26).

2. The air cushion belt conveyor according to claim 1, characterized in that: The lower surface of the upper plate groove (10) is tightly overlapped with the top of the upper high-pressure air chamber (4) and the top of the longitudinal partition (5), and the top of the upper high-pressure air chamber (4) and the top of the longitudinal partition (5) are respectively provided with rubber sealing pads (27).

3. The air cushion belt conveyor according to claim 1, characterized in that: The upper plate groove (10) is an arc-shaped plate with a concave upper surface, the lower plate groove (19) is an arc-shaped plate with a convex upper surface, and the cross-sections of the upper cover plate (11) and the lower cover plate (23) are arc-shaped or herringbone-shaped.

4. The air cushion belt conveyor according to claim 1, characterized in that: The air inlet of the high-pressure air source fan (2) is provided with a dust filter (28); the end of the return air duct II (26) away from the return air cover II (25) is connected to the air inlet of the dust filter (28) of the high-pressure air source fan (2); and the end of the return air duct I (17) away from the return air cover I (16) is connected to the air outlet of the dust filter (28).

5. The air cushion belt conveyor according to claim 4, characterized in that: The dust filter (28) is a bag dust collector.

6. The air cushion belt conveyor according to claim 4, characterized in that: The air outlet of the dust filter (28) is provided with a one-way valve (29).

7. The air cushion belt conveyor according to claim 1, characterized in that: The belt deflection prevention device (18) comprises a support plate (30) fixedly connected to the upper surface of the upper disc groove (10), and a pressure sensor (31) is fixedly connected to the upper end of the support plate (30).

8. The air cushion belt conveyor according to claim 1, characterized in that: The surface of the belt anti-deviation device (18), the upper surface of the upper plate groove (10) and the upper surface of the lower plate groove (19) are provided with a Teflon self-lubricating and wear-resistant outer lining layer.

9. The air cushion belt conveyor according to claim 1, characterized in that: The air volume control valve (9) is a three-way electromagnetic valve or a flow valve separately arranged on an air intake pipe connected to the left air chamber (6) and the right air chamber (7).

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