Airflow chute material switching device

Abstract

This utility model discloses a pneumatic chute material switching device, relating to the field of material conveying technology. The device includes a switching unit comprising a drive unit, a connecting rod unit, a switching unit, and a limiting guide chute. The switching unit is rotatably installed inside the conveying chute. Rotation of the switching unit selectively closes / opens any conveying channel within the conveying chute. The top of the switching unit extends beyond the top shell of the conveying chute. The limiting guide chute is installed at the top of the conveying chute. The connecting rod unit is slidably installed on the limiting guide chute. The drive unit is installed at the top of the conveying chute. One end of the connecting rod unit is connected to the end of the switching unit extending out of the conveying chute, and the other end is connected to the output end of the drive unit. The drive unit drives the connecting rod unit to swing, which in turn drives the switching unit to rotate within the conveying chute, thereby achieving switching during material conveying. The connecting rod unit is limited by the limiting guide chute to prevent excessive swinging that could lead to incomplete opening or closing of the conveying channel.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, and specifically relates to a pneumatic chute material switching device. Background Technology

[0002] A pneumatic chute is a device that uses air to fluidize materials and continuously conveys them based on the material's own weight and the chute's inclination angle. Its core principle is to introduce compressed air into a chute with an internal permeable layer, causing the material to mix with the air and form a fluid state, flowing forward under gravity. Due to its significant advantages such as no moving parts, low wear, low energy consumption, low noise, and large conveying capacity, it is widely used in conveying systems for powdery and fine granular materials in industries such as cement, metallurgy, chemicals, grain, and power. Depending on production requirements, the material needs to be switched and distributed to two or more different downstream devices or silos during the conveying process. This function requires a specialized "switching device," also known as a "transfer device."

[0003] Currently, the common method for switching materials in pneumatic chutes in the industry mainly relies on manual operation. This involves manually driving the oscillation of the distribution baffle to control the flow path and thus achieve material switching. While this method is simple in structure and low in cost, it has a low degree of automation, high labor intensity, and low switching efficiency, making it difficult to meet the needs of modern continuous production. Furthermore, during material switching, because the pneumatic chute uses air pressure from the air chamber to blow the material up, the permeable cloth below the baffle inflates, hindering the movement of the distribution baffle and preventing material transfer. In this situation, the air valve in the pneumatic chute's air chamber must be closed to cut off the material in the chute, and external force must be used to press the permeable cloth down so that the distribution baffle can be fully closed or opened. Forcibly turning the distribution baffle can cause the shaft to break, making the entire material switching process extremely laborious. In addition, chutes are usually installed at a high position, posing safety risks to personnel working on them. Utility Model Content

[0004] The purpose of this invention is to provide a material switching device for a pneumatic chute, thereby overcoming the cumbersome nature of traditional material switching operations. By driving the rotation of the distribution baffle through a drive device, the flow direction of the material is easily changed, greatly shortening the material switching time and improving production efficiency. The specific technical solution is as follows: A pneumatic chute material switching device includes a conveying chute with a first conveying channel and a second conveying channel branching out from it. A switching device is provided on the outer shell of the conveying chute to control the opening or closing of the material inlet of the first conveying channel or the second conveying channel. The switching device includes a drive unit, a connecting rod unit, a switching unit, and a limiting guide groove. The switching unit is rotatably installed inside the conveying chute and located at the intersection of the first conveying channel and the second conveying channel. The top of the switching unit protrudes through the shell surface of the top of the conveying chute. The limiting guide groove is installed on the top of the conveying chute. The connecting rod unit is slidably installed on the limiting guide groove. The drive unit is installed on the top of the conveying chute. One end of the connecting rod unit is connected to the end of the switching unit that extends out of the conveying chute, and the other end is connected to the output end of the drive unit.

[0005] Preferably, the switching unit includes a rotating shaft and a material distribution baffle. The rotating shaft is rotatably installed at the intersection of the first conveying channel and the second conveying channel. The top end of the rotating shaft extends through the shell surface of the top of the conveying chute. The material distribution baffle is installed on the rotating shaft, and the opening or closing of the material inlet of the first conveying channel or the second conveying channel is controlled by the swinging of the material distribution baffle.

[0006] Preferably, the limiting guide groove is an arc-shaped groove.

[0007] Preferably, the drive unit includes a swing motor and a mounting base, wherein the swing motor is mounted on top of the conveying chute via the mounting base.

[0008] Preferably, the connecting rod includes a first connecting rod, a first slider, a second slider, and a grooved connecting rod. The first connecting rod is connected to one end of the rotating shaft that extends out of the conveying chute shell. The first slider and the second slider are respectively disposed on opposite sides of the first connecting rod. The grooved connecting rod is connected to the output end of the swing motor. The first slider is slidably disposed in the limiting guide groove. The second slider is slidably connected to the grooved connecting rod. The swing motor drives the material distribution baffle to swing within the conveying chute, thereby controlling the opening or closing of the material inlet of the first conveying channel or the second conveying channel.

[0009] Preferably, a pressed grid is also installed inside the conveying chute, and the pressed grid is located above the breathable cloth inside the conveying chute.

[0010] Preferably, a first threshold plate is installed at the material inlet of the first conveying channel, the upper surface of the first threshold plate is flush with the bottom surface of the material distribution baffle, and the top surface of the pressing grid is flush with the upper surface of the first threshold plate.

[0011] Preferably, a second threshold plate is installed at the material inlet of the second conveying channel, the upper surface of the second threshold plate is flush with the bottom surface of the material distribution baffle, and the top surface of the pressing grid is flush with the upper surface of the second threshold plate.

[0012] Compared with existing technologies, this utility model has the following beneficial effects: This utility model provides a pneumatic chute material switching device. By driving the rotation of the material distribution baffle through the drive device, the flow direction of the material can be easily changed, which greatly shortens the material switching time and improves production efficiency. At the same time, by adding a pressing grid plate to press the breathable cloth, it is prevented from arching under air pressure and affecting the rotation of the material distribution baffle. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is an exploded view of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the internal installation of the conveying chute of this utility model.

[0017] Explanation of key figure labels: 100-Conveying chute, 110-First conveying channel, 111-First threshold plate, 120-Second conveying channel, 121-Second threshold plate, 130-Pressed grid, 200-Switching device, 210-Drive unit, 211-Oscillating motor, 212-Mounting base, 220-Connecting rod unit, 221-First connecting rod, 222-Slider one, 223-Slider two, 224-Groove connecting rod, 230-Switching unit, 231-Rotating shaft, 232-Distribution baffle, 240-Limiting guide chute. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0022] Example like Figures 1 to 3 As shown, a pneumatic chute material switching device includes a conveying chute 100, with a first conveying channel 110 and a second conveying channel 120 branching out from the conveying chute 100. A switching device 200 is provided on the outer shell surface of the conveying chute 100 to control the opening or closing of the material inlet of the first conveying channel 110 or the second conveying channel 120.

[0023] Preferably, the switching device 200 includes a driving unit 210, a connecting rod unit 220, a switching unit 230, and a limiting guide groove 240. The switching unit 230 is rotatably mounted inside the conveying chute 100 and located at the intersection of the first conveying channel 110 and the second conveying channel 120. Rotation of the switching unit 230 closes / opens either the first conveying channel 110 or the second conveying channel 120. The top of the switching unit 230 protrudes through the shell surface of the top of the conveying chute 100. The limiting guide groove 240 is mounted on the top of the conveying chute 100. Further, the limiting guide groove 240 is an arc-shaped groove. The connecting rod unit... The connecting rod 220 is slidably mounted on the limiting guide groove 240. The driving part 210 is mounted on the top of the conveying chute 100. One end of the connecting rod 220 is connected to the end of the switching part 230 extending out of the conveying chute 100, and the other end is connected to the output end of the driving part 210. The driving part 210 drives the connecting rod 220 to swing, and then the connecting rod 220 drives the switching part 230 to rotate within the conveying chute 100, thereby realizing the switching during the material conveying process. During the swinging process, the connecting rod 220 is limited by the limiting guide groove 240 to avoid excessive swinging that would cause the conveying channel to open or close incompletely.

[0024] In some preferred embodiments, the switching unit 230 includes a rotating shaft 231 and a material distribution baffle 232. The rotating shaft 231 is rotatably mounted at the intersection of the first conveying channel 110 and the second conveying channel 120. The top end of the rotating shaft 231 protrudes through the shell surface of the top of the conveying chute 100. The material distribution baffle 232 is mounted on the rotating shaft 231. The opening or closing of the material inlet of the first conveying channel 110 or the second conveying channel 120 is controlled by the swinging of the material distribution baffle 232. It is worth mentioning that the size of the material distribution baffle 232 is the same as the size of the material inlet of the conveying channel, so that when the material distribution baffle 232 rotates to any conveying channel, it can fit tightly against the material inlet frame of the conveying channel to close the conveying channel.

[0025] In some preferred embodiments, the drive unit 210 includes a swing motor 211 and a mounting base 212, wherein the swing motor 211 is mounted on the top of the conveying chute 100 via the mounting base 212.

[0026] In some preferred embodiments, the connecting rod portion 220 includes a first connecting rod 221, a first slider 222, a second slider 223, and a grooved connecting rod 224. The first connecting rod 221 is connected to one end of the rotating shaft 231 that extends out of the shell surface of the conveying chute 100. The first slider 222 and the second slider 223 are respectively disposed on opposite sides of the first connecting rod 221. The grooved connecting rod 224 is connected to the output end of the swing motor 211. The first slider 222 is slidably disposed in the limiting guide groove 240. The second slider 223 is slidably connected to the grooved connecting rod 224. The swing motor 211 drives the material distribution baffle 232 to swing within the conveying chute 100, thereby controlling the opening or closing of the material inlet of the first conveying channel 110 or the second conveying channel 120.

[0027] In some preferred embodiments, a pressing grid 130 is also installed inside the conveying chute 100. The pressing grid 130 is located above the breathable cloth inside the conveying chute 100. It is worth mentioning that the pressing grid 130 is located on the area swept by the material distribution baffle 232 during rotation. The purpose is to press down the breathable cloth located in this area by the pressing grid 130, so as to prevent the breathable cloth from bulging due to wind pressure during material conveying and affecting the rotation of the material distribution baffle 232.

[0028] In some preferred embodiments, a first threshold plate 111 is installed at the feed inlet of the first conveying channel 110, the upper surface of the first threshold plate 111 being flush with the bottom surface of the material distribution baffle 232, and the top surface of the pressing grid 130 being flush with the upper surface of the first threshold plate 111; similarly, a second threshold plate 121 is installed at the feed inlet of the second conveying channel 120, the upper surface of the second threshold plate 121 being flush with the bottom surface of the material distribution baffle 232, and the top surface of the pressing grid 130 being flush with the upper surface of the second threshold plate 121. The material distribution baffle 232 can fit tightly with the threshold plate to close either feed inlet.

[0029] In summary, this utility model provides a pneumatic chute material switching device. By driving the rotation of the material distribution baffle through the drive device, the flow direction of the material can be easily changed, which greatly shortens the material switching time and improves production efficiency. At the same time, by adding a pressing grid plate to press the breathable cloth, it is prevented from arching under air pressure and affecting the rotation of the material distribution baffle.

[0030] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A pneumatic chute material switching device, comprising a conveying chute (100), wherein a first conveying channel (110) and a second conveying channel (120) branch off from the conveying chute (100), characterized in that, A switching device (200) is provided on the outer shell surface of the conveying chute (100) to control the opening or closing of the material inlet of the first conveying channel (110) or the second conveying channel (120); The switching device (200) includes a drive unit (210), a connecting rod unit (220), a switching unit (230), and a limiting guide groove (240). The switching unit (230) is rotatably installed in the conveying chute (100) and located at the intersection of the first conveying channel (110) and the second conveying channel (120). The top of the switching unit (230) protrudes through the shell surface of the top of the conveying chute (100). The limiting guide groove (240) is installed on the top of the conveying chute (100). The connecting rod unit (220) is slidably installed on the limiting guide groove (240). The drive unit (210) is installed on the top of the conveying chute (100). One end of the connecting rod unit (220) is connected to the end of the switching unit (230) that extends out of the conveying chute (100), and the other end is connected to the output end of the drive unit (210).

2. The material switching device for a pneumatic chute according to claim 1, characterized in that, The switching unit (230) includes a rotating shaft (231) and a material distribution baffle (232). The rotating shaft (231) is rotatably installed at the intersection of the first conveying channel (110) and the second conveying channel (120). The top end of the rotating shaft (231) protrudes through the shell surface of the top of the conveying chute (100). The material distribution baffle (232) is installed on the rotating shaft (231). The opening or closing of the material inlet of the first conveying channel (110) or the second conveying channel (120) is controlled by the swinging of the material distribution baffle (232).

3. The material switching device for a pneumatic chute according to claim 2, characterized in that, The limiting guide groove (240) is an arc-shaped groove.

4. The material switching device for a pneumatic chute according to claim 3, characterized in that, The drive unit (210) includes a swing motor (211) and a mounting base (212), wherein the swing motor (211) is mounted on the top of the conveying chute (100) via the mounting base (212).

5. A material switching device for a pneumatic chute according to claim 4, characterized in that, The connecting rod (220) includes a first connecting rod (221), a slider one (222), a slider two (223), and a grooved connecting rod (224). The first connecting rod (221) is connected to one end of the rotating shaft (231) that extends out of the shell surface of the conveying chute (100). The slider one (222) and the slider two (223) are respectively disposed on opposite sides of the first connecting rod (221). The grooved connecting rod (224) is connected to the output end of the swing motor (211). The slider one (222) is slidably disposed in the limiting guide groove (240). The slider two (223) is slidably connected to the grooved connecting rod (224). The swing motor (211) drives the material distribution baffle (232) to swing in the conveying chute (100), thereby controlling the opening or closing of the material inlet of the first conveying channel (110) or the second conveying channel (120).

6. The material switching device for a pneumatic chute according to claim 2, characterized in that, A pressed grid (130) is also installed inside the conveying chute (100), and the pressed grid (130) is located above the breathable cloth inside the conveying chute (100).

7. A material switching device for a pneumatic chute according to claim 6, characterized in that, A first threshold plate (111) is installed at the material inlet of the first conveying channel (110). The upper surface of the first threshold plate (111) is flush with the bottom surface of the material distribution baffle (232), and the top surface of the pressing grid (130) is flush with the upper surface of the first threshold plate (111).

8. A material switching device for a pneumatic chute according to claim 7, characterized in that, A second threshold plate (121) is installed at the material inlet of the second conveying channel (120). The upper surface of the second threshold plate (121) is flush with the bottom surface of the material distribution baffle (232), and the top surface of the pressing grid (130) is flush with the upper surface of the second threshold plate (121).

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