Pipeline type double-air-cushion belt conveyor

Abstract

The utility model belongs to the technical field of air cushion conveyors, and discloses a pipeline type double-air-cushion belt conveyor which comprises a pipeline shell, the interior of the pipeline shell is divided into a long-distance air chamber and a return air chamber, a long-distance air cushion groove plate is fixedly installed in the long-distance air chamber, and a main air chamber, a left air chamber, a right air chamber, a left air return chamber and a right air return chamber are arranged below the long-distance air cushion groove plate. Air return holes are formed in the two sides of the long-distance air cushion groove plate, air pressure sensors are arranged in the left and right air chambers, the main air chamber and the left and right air return chambers are connected with a high-pressure air source fan I through pipelines, and the left and right air chambers are connected with a high-pressure air source fan II through pipelines; by arranging the air return hole, the air return chamber and the air return pipe, high-pressure air can be recycled conveniently, air cleanliness is kept, air pressure in the air return chamber can be detected conveniently by arranging the air pressure sensor, and whether the conveying belt deflects or not can be detected conveniently by arranging the main air chamber, the left air chamber and the right air chamber; the left side, the middle side and the right side of the lower surface of the conveying belt can be conveniently supported, and therefore correction can be conveniently conducted when the conveying belt deflects.

Description

Technical Field

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

[0002] During the transportation of bulk materials, conventional belt conveyors are prone to dust spillage, causing environmental pollution. More and more bulk materials are transported using air cushion conveyors with an outer cover (i.e., pipeline air cushion conveyors). During the transportation of bulk materials, they are in the pipeline, isolated from the outside world, and no dust spillage occurs. However, due to the dispersion characteristics of bulk materials, bulk materials will randomly scatter on the conveyor belt, which can easily cause the material to accumulate on one side of the conveyor belt, and then cause the conveyor belt to deflect. The lower surface of the deflected side of the conveyor belt will rub against the upper surface of the air cushion groove plate, causing damage to the conveyor belt, and increasing the running resistance of the conveyor belt and energy consumption. Therefore, a pipeline double air cushion belt conveyor is needed that is easy to correct the deflection of the conveyor belt caused by uneven materials. Utility Model Content

[0003] The utility model aims to provide a pipeline type double air cushion belt conveyor.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pipeline type double air cushion belt conveyor, comprising a pipeline shell, a high-pressure air source fan I and a high-pressure air source fan II, the interior of the pipeline shell is provided with a pipeline partition which divides the inner cavity of the pipeline shell into an upper travel air chamber and a lower return air chamber, the travel air chamber is fixedly installed with a travel air cushion slot plate which divides the travel air chamber into an upper material conveying chamber and a lower high-pressure air chamber, the upper surface of the travel air cushion slot plate is a concave arc surface, the upper side of the travel air cushion slot plate is suspended with a travel section of the conveyor belt, the high-pressure air chamber comprises a main air chamber at the bottom, a left air chamber at the upper left, a right air chamber at the upper right, a left return air chamber at the left top and a right return air chamber at the right top, the main air chamber is connected to the air outlet of the high-pressure air source fan I through an air inlet pipe I, the upper surface of the travel air cushion slot plate is provided with ventilation holes which penetrate its lower surface, and are respectively connected with the main air chamber, the left air chamber and the right air chamber, The left and right ends of the upper surface of the transport air cushion slot plate are respectively provided with return air holes connected to the left return air chamber and the right return air chamber. Air pressure sensors are respectively provided on the inner walls of the left air chamber and the right air chamber. The left return air chamber and the right return air chamber are respectively connected to the air inlet of the high-pressure air source fan Ⅰ through the return air pipe Ⅰ. A return air cushion slot plate is fixedly installed in the return air chamber to separate the return air chamber into an upper return chamber and a lower return high-pressure air chamber. The upper surface of the return air cushion slot plate is an upper convex An arc-shaped surface, a return section of the conveyor belt is suspended on the upper side of the return air cushion slot plate, a ventilation hole connected to the return high-pressure air chamber is opened on the upper surface of the return air cushion slot plate, the return high-pressure air chamber is connected to the return air pipe I through the air inlet pipe II, the return chamber is connected to the air inlet of the high-pressure air source fan I through the return air pipe II, the left air chamber and the right air chamber are connected to the air outlet of the high-pressure air source fan II through the air inlet pipe III, and an air volume control valve is installed on the air inlet pipe III.

[0005] Preferably, the cross-section of the pipeline shell is circular, elliptical, square or polygonal.

[0006] Preferably, radially and axially arranged reinforcing ribs or reinforcing plates are fixedly connected to the outer wall of the pipeline shell, and the lower surface of the pipeline partition is provided with reinforcing ribs or reinforcing plates.

[0007] Preferably, both ends of the pipeline casing are installed on the ground through support frames.

[0008] Preferably, the main air chamber and the left air chamber are separated by a left partition plate I, the main air chamber and the right air chamber are separated by a right partition plate I, the left air chamber and the left return air chamber are separated by a left partition plate II, and the right air chamber and the right return air chamber are separated by a right partition plate II. A vent for connecting the left air chamber and the main air chamber is provided on the left partition plate I, and a one-way valve I is installed thereon. A vent for connecting the right air chamber and the main air chamber is provided on the right partition plate I, and a one-way valve II is installed thereon.

[0009] Preferably, the one-way valve I comprises a hollow shell whose upper portion extends into the left air chamber, an air inlet hole is provided at the bottom of the shell, a rubber sealing pad is movably overlapped on the top of the air inlet hole, a limiting plate is fixedly connected to the upper surface of the rubber sealing pad, a return spring is fixedly connected to the upper surface of the limiting plate, the top end of the return spring is connected to the inner top wall of the shell, an air outlet hole is provided on the outer side wall of the shell, and the structure of the one-way valve II is the same as that of the one-way valve I.

[0010] Preferably, the inner wall of the shell, the outer wall of the rubber sealing pad, and the outer wall of the limiting plate are all smooth surfaces.

[0011] Preferably, the inner wall of the shell, the outer wall of the rubber sealing pad, and the outer wall of the limiting plate are all provided with a Teflon self-lubricating and wear-resistant coating.

[0012] Preferably, the air inlets of the high-pressure air source blower I and the high-pressure air source blower II are provided with air filters.

[0013] Preferably, a one-way valve is provided on the air inlet pipe III.

[0014] Beneficial Effects

[0015] The utility model discloses a duct-type double air cushion belt conveyor, which is convenient for recycling high-pressure air and saving energy by arranging return air holes, return air chamber and return air duct. At the same time, the high-pressure air supporting the conveying belt flows downward to the return air chamber through the return air holes under the conveying belt. During the whole process, the high-pressure air will not enter the upper space of the conveyed material, will not contact the material, will not stir up dust on the material, and will avoid the dust on the material from polluting the high-pressure air, thereby maintaining the cleanliness of the circulating high-pressure air. By arranging an air pressure sensor, it is convenient to detect the air pressure in the return air chamber, and then detect whether the conveying belt is deflected. By arranging the main air chamber and the left and right air chambers, it is convenient to support the left side, the middle and the right side of the lower surface of the conveying belt respectively, so as to facilitate correction when the conveying belt is deflected. By arranging an air 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 from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A in the enlarged view;

[0018] Figure 3 It is a structural schematic diagram of the one-way valve in the utility model.

[0019] In the figure: 1. Pipe shell; 2. High-pressure air source fan I; 3. High-pressure air source fan II; 101. Pipe partition; 102. Material transport chamber; 103. Transport air cushion slot plate; 104. Conveyor belt; 105. Main air chamber; 106. Left air chamber; 107. Right air chamber; 108. Left return air chamber; 109. Right return air chamber; 110. Air inlet pipe I; 111. Return air hole; 112. Air pressure sensor; 113. Return air pipe I; 114. Return chamber; 115. Return high-pressure air chamber; 116, return air cushion groove plate; 117, air inlet pipe II; 118, return air pipe II; 119, air inlet pipe III; 120, air volume control valve; 121, left partition I; 122, right partition I; 123, left partition II; 124, right partition II; 125, one-way valve I; 126, one-way valve II; 127, shell; 128, air inlet hole; 129, rubber sealing pad; 130, limit plate; 131, return spring; 132, air outlet hole. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-3As shown, the utility model provides a technical solution: a pipeline type double air cushion belt conveyor, comprising a pipeline shell 1, a high-pressure air source fan I2 and a high-pressure air source fan II3, the cross-section of the pipeline shell 1 is circular, elliptical, square or polygonal, and is circular in this embodiment, and radially and axially arranged reinforcing ribs or reinforcing plates are fixedly connected to the outer wall of the pipeline shell 1, and reinforcing ribs or reinforcing plates are arranged on the lower surface of the pipeline partition 101. Both ends of the pipeline shell 1 are installed on the ground through a support frame. The high-pressure air source fan I2 and the high-pressure air source fan II3 in this embodiment are multi-stage centrifugal compression fans with controllable air volume. The interior of the pipeline shell 1 is provided with a pipeline partition 101 that divides the inner cavity of the pipeline shell 1 into an upper travel air chamber and a lower return air chamber. The travel air chamber A travel air cushion slot plate 103 is fixedly installed indoors by welding or bolting, which divides the travel air chamber into an upper material conveying chamber 102 and a lower high-pressure air chamber. The upper surface of the travel air cushion slot plate 103 is a concave arc-shaped surface. A travel section of a conveyor belt 104 for conveying materials is suspended on the upper side of the travel air cushion slot plate 103. The high-pressure air chamber includes a main air chamber 105 at the bottom, a left air chamber 106 at the upper left, a right air chamber 107 at the upper right, a left return air chamber 108 at the left top, and a right return air chamber 109 at the right top. The main air chamber 105 is connected to the air outlet of the high-pressure air source fan Ⅰ2 through an air inlet pipe Ⅰ110. The main air chamber 105 and the left air chamber 106 are separated by a left partition plate Ⅰ121, and the main air chamber 105 and the right air chamber 107 are separated by a right partition plate Ⅰ121. The left air chamber 106 and the left return air chamber 108 are separated by a left partition plate Ⅱ 123, and the right air chamber 107 and the right return air chamber 109 are separated by a right partition plate Ⅱ 124. A ventilating port for connecting the left air chamber 106 and the main air chamber 105 is provided on the left partition plate Ⅰ 121, and a one-way valve Ⅰ 125 is installed, so that high-pressure air can only enter the left air chamber 106 from the main air chamber 105, but cannot enter the main air chamber 105 from the left air chamber 106. A ventilating port for connecting the right air chamber 107 and the main air chamber 105 is provided on the right partition plate Ⅰ 122, and a one-way valve Ⅱ 126 is installed, so that high-pressure air can only enter the right air chamber 107 from the main air chamber 105, but cannot enter the main air chamber 105 from the right air chamber 107. The upper portion of the air cushion slot plate 103 is provided with a ventilating port for connecting the left air chamber 106 and the main air chamber 105, and a one-way valve Ⅱ 126 is installed, so that high-pressure air can only enter the right air chamber 107 from the main air chamber 105, but cannot enter the main air chamber 105 from the right air chamber 107. The surface is provided with ventilation holes penetrating through its lower surface, and are respectively connected with the main air chamber 105, the left air chamber 106, and the right air chamber 107; the left and right ends of the upper surface of the transport air cushion slot plate 103 are respectively provided with return air holes 111 connected with the left return air chamber 108 and the right return air chamber 109; the inner walls of the left air chamber 106 and the right air chamber 107 are respectively provided with air pressure sensors 112; the left return air chamber 108 and the right return air chamber 109 are respectively connected with the air inlet of the high-pressure air source fan Ⅰ2 through the return air pipe Ⅰ 113; the return air cushion slot plate 116 is fixedly installed in the return air chamber by welding or bolting to separate the return air chamber into an upper return chamber 114 and a lower return high-pressure air chamber 115; the upper surface of the return air cushion slot plate 116 is an upward convex arc surface;The return section of the conveyor belt 104 is suspended on the upper side of the return air cushion slot plate 116. A ventilation hole connected to the return high-pressure air chamber 115 is opened on the upper surface of the return air cushion slot plate 116. The return high-pressure air chamber 115 is connected to the return air pipe I 113 through the air inlet pipe II 117. Part of the high-pressure air returned by the return air pipe I 113 enters the return high-pressure air chamber 115, thereby supporting the return section of the conveyor belt 104. The return chamber 114 is connected to the high-pressure air source fan I 2 through the return air pipe II 118. The air inlet of the left air chamber 106 and the right air chamber 107 are connected to the air outlet of the high-pressure air source fan Ⅱ3 through the air inlet pipe Ⅲ119. The air inlet pipe Ⅲ119 is divided into two pipes. The air volume control valve 120 is installed on the air inlet pipe Ⅲ119. The air volume control valve 120 is a normally closed valve. The air volume control in this embodiment is a normally closed three-position three-way solenoid valve. A one-way valve is provided on the air inlet pipe Ⅲ119 to prevent the high-pressure air in the left air chamber 106 and the right air chamber 107 from flowing into the air inlet pipe Ⅲ119.

[0022] Specifically, the one-way valve I 125 includes a hollow shell 127 whose upper portion extends into the left air chamber 106, an air inlet hole 128 is provided at the bottom of the shell 127, a rubber sealing pad 129 is movably overlapped at the top of the air inlet hole 128, and is sealed by the lower surface of the rubber sealing pad 129, the upper surface of the rubber sealing pad 129 is fixedly connected to a limit plate 130, the upper surface of the limit plate 130 is fixedly connected to a return spring 131, the return spring 131 is a compression spring, and the return spring 131 is a compression spring. The top of the one-way valve 126 is connected to the inner top wall of the shell 127, the outer wall of the shell 127 is provided with an air outlet 132 that penetrates the side wall of the shell 127, the inner wall of the shell 127, the outer wall of the rubber sealing pad 129, and the outer wall of the limit plate 130 are all smooth surfaces. In this embodiment, the inner wall of the shell 127, the outer wall of the rubber sealing pad 129, and the outer wall of the limit plate 130 are all provided with a Teflon self-lubricating and wear-resistant coating, and the structure of the one-way valve II 126 is the same as that of the one-way valve I 125.

[0023] Specifically, air filters are provided at the air inlets of the high-pressure air source blower Ⅰ2 and the high-pressure air source blower Ⅱ3. The air filters in this embodiment are bag-type dust filters.

[0024] The working principle of the utility model is that when conveying materials, the high-pressure air source fan Ⅰ2 conveys high-pressure air to the main air chamber 105 through the air inlet pipe Ⅰ110, and a part of the high-pressure air in the main air chamber 105 enters the material conveying chamber 102 through the ventilation holes on the travel air cushion slot plate 103, and the other part of the high-pressure air enters the left air chamber 106 and the right air chamber 107 through the one-way valve Ⅰ125 and the one-way valve Ⅱ126, and then enters the material conveying chamber 102 through the ventilation holes on the travel air cushion slot plate 103. The high-pressure air forms a layer of air film with a certain pressure between the upper surface of the travel air cushion slot plate 103 and the lower surface of the conveying belt 104 to support the conveying belt 104 and the materials it carries. After supporting the conveyor belt 104, the high-pressure air enters the left return air chamber 108 and the right return air chamber 109 through the return air holes 111 at the two ends of the top of the travel air cushion slot plate 103, and flows back to the high-pressure air source fan Ⅰ2 through the return air pipe Ⅰ113. Part of the high-pressure air returning from the return air pipe Ⅰ113 enters the return high-pressure air chamber 115 through the air inlet pipe Ⅱ117, and then supports the return section of the conveyor belt 104, and then flows back to the high-pressure air source fan Ⅰ2 through the return air pipe Ⅱ118, so as to realize the recycling of high-pressure air and save energy. When the conveyor belt 104 deflects to one side, the lower surface of the deflected side of the conveyor belt 104 will contact the upper surface of the travel air cushion slot plate 103, thereby shielding the conveyor belt 104. The return air hole 111 on the side causes the air pressure in the return air chamber on this side to decrease, and the air pressure sensor 112 sends a signal, and the high-pressure air source fan II3 starts working. The air volume control valve 120 on the air inlet pipe III 119 controls the high-pressure air source fan II3 to be connected with the return air chamber on the deflected side of the conveyor belt 104, but not to the other return air chamber, and to deliver pressurized air to the return air chamber on the deflected side, thereby increasing the support strength on the deflected side, and then correcting the conveyor belt 104 to keep the conveyor belt 104 balanced. The ducted double air cushion belt conveyor of the utility model is convenient for realizing the recycling of high-pressure air and saving energy by arranging return air holes, return air chambers and return air ducts, while supporting the high-pressure air circulation of the conveyor belt. The high-pressure air flows downward through the return air hole under the conveyor belt to the return air chamber. During the whole process, the high-pressure air will not enter the upper space of the conveyed material, will not contact the material, and will not stir up the dust on the material, thereby preventing the dust on the material from contaminating the high-pressure air and maintaining the cleanliness of the circulating high-pressure air. By setting an air pressure sensor, it is convenient to detect the air pressure in the return air chamber, and then detect whether the conveyor belt is deflected. By setting the main air chamber and the left and right air chambers, it is convenient to support the left, middle and right sides of the lower surface of the conveyor belt respectively, so as to facilitate correction when the conveyor belt is deflected. By setting an air 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 from the outside.

Claims

1. A pipeline double air cushion belt conveyor, comprising a pipeline housing (1), a high pressure air source fan I (2) and a high pressure air source fan II (3), characterized in that: The interior of the pipeline shell (1) is provided with a pipeline partition (101) for dividing the inner cavity of the pipeline shell (1) into an upper travel air chamber and a lower return air chamber. A travel air cushion groove plate (103) is fixedly installed in the travel air chamber for dividing the travel air chamber into an upper material conveying chamber (102) and a lower high-pressure air chamber. The upper surface of the travel air cushion groove plate (103) is a concave arc surface. The travel section of the conveyor belt (104) is suspended on the upper side of the travel air cushion groove plate (103). The high-pressure air chamber includes a main air chamber (105) at the bottom, a left air chamber (106) at the upper left, and a left air chamber (107) at the upper right. The main air chamber (105) is connected to the air outlet of the high-pressure air source fan I (2) through the air inlet pipe I (110). The upper surface of the travel air cushion groove plate (103) is provided with ventilation holes penetrating through its lower surface and are respectively connected to the main air chamber (105), the left air chamber (106) and the right air chamber (107). The left and right ends of the upper surface of the travel air cushion groove plate (103) are respectively provided with return air holes (111) connected to the left return air chamber (108) and the right return air chamber (109). An air pressure sensor (112) is provided on the inner wall of the left air chamber (106) and the right air chamber (107), respectively. The left return air chamber (108) and the right return air chamber (109) are respectively connected to the air inlet of the high-pressure air source fan I (2) through the return air pipe I (113). A return air cushion groove plate (116) is fixedly installed inside the return air chamber to separate the return air chamber into an upper return chamber (114) and a lower return high-pressure air chamber (115). The upper surface of the return air cushion groove plate (116) is an upward convex arc surface. A conveyor belt ( The return section of the left air chamber (106) and the right air chamber (107) are connected to the air outlet of the high-pressure air source fan II (3) through the air inlet pipe III (119). The air volume control valve (120) is installed on the air inlet pipe III (119).

2. The pipeline double air cushion belt conveyor according to claim 1, characterized in that: The cross section of the pipeline housing (1) is circular, elliptical, square or polygonal.

3. The pipeline double air cushion belt conveyor according to claim 1 is characterized in that: The outer wall of the pipeline shell (1) is fixedly connected with radially and axially arranged reinforcing ribs or reinforcing plates, and the lower surface of the pipeline partition (101) is provided with reinforcing ribs or reinforcing plates.

4. The pipeline double air cushion belt conveyor according to claim 1, characterized in that: Both ends of the pipeline casing (1) are installed on the ground via support frames.

5. The pipeline double air cushion belt conveyor according to claim 1, characterized in that: The main air chamber (105) and the left air chamber (106) are separated by a left partition plate I (121), the main air chamber (105) and the right air chamber (107) are separated by a right partition plate I (122), the left air chamber (106) and the left return air chamber (108) are separated by a left partition plate II (123), and the right air chamber (107) and the right return air chamber (109) are separated by a right partition plate II (124). A ventilating opening for connecting the left air chamber (106) and the main air chamber (105) is provided on the left partition plate I (121), and a one-way valve I (125) is installed thereon. A ventilating opening for connecting the right air chamber (107) and the main air chamber (105) is provided on the right partition plate I (122), and a one-way valve II (126) is installed thereon.

6. The pipeline double air cushion belt conveyor according to claim 5, characterized in that: The one-way valve I (125) includes a hollow shell (127) whose upper portion extends into the left air chamber (106); an air inlet hole (128) is provided at the bottom of the shell (127); a rubber sealing pad (129) is movably overlapped at the top of the air inlet hole (128); a limit plate (130) is fixedly connected to the upper surface of the rubber sealing pad (129); a return spring (131) is fixedly connected to the upper surface of the limit plate (130); a top end of the return spring (131) is connected to the inner top wall of the shell (127); an air outlet hole (132) is provided on the outer side wall of the shell (127); and the structure of the one-way valve II (126) is the same as that of the one-way valve I (125).

7. The pipeline double air cushion belt conveyor according to claim 6, characterized in that: The inner wall of the housing (127), the outer wall of the rubber sealing pad (129), and the outer wall of the limiting plate (130) are all smooth surfaces.

8. The pipeline double air cushion belt conveyor according to claim 6, characterized in that: The inner wall of the housing (127), the outer wall of the rubber sealing pad (129), and the outer wall of the limiting plate (130) are all provided with a Teflon self-lubricating and wear-resistant coating.

9. The pipeline double air cushion belt conveyor according to claim 1, characterized in that: Air filters are provided at the air inlets of the high-pressure air source blower I (2) and the high-pressure air source blower II (3).

10. The pipeline double air cushion belt conveyor according to claim 1, characterized in that: The air inlet pipe III (119) is provided with a one-way valve.

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