Layered storage material caching device and storage method

Abstract

The invention provides a layered storage material temporary storage device which is arranged below the discharging end of a feeding belt conveyor and comprises a storage cabinet, a plurality of temporary storage belt conveyors which are sequentially arranged at intervals in the vertical direction are arranged in the storage cabinet, and the temporary storage belt conveyors are used for conveying and storing materials. A material guiding channel is arranged between every two adjacent cache belt conveyors, the upper end of each material guiding channel is communicated with the discharging end of the cache belt conveyor located above the material guiding channel, and the lower end of each material guiding channel is communicated with the feeding end of the cache belt conveyor located below the material guiding channel. Damage and breakage of the tobacco leaves can be effectively reduced, and therefore the quality of the tobacco leaves is improved. The invention further provides a material storage method.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco processing devices, and in particular to a hierarchical storage material buffer device and a storage method. Background Art

[0002] Tobacco storage cabinets, also known as storage cabinets, are equipment used to store tobacco leaves and adjust the entire production line during the silk production process in the tobacco industry. In the prior art, the storage cabinet is fed by a feeding belt conveyor. Since the height of the storage cabinet is generally high, the feeding belt conveyor needs to transport the tobacco leaves to a high place, and then put the tobacco leaves from a high place into the storage cabinet to achieve feeding. In addition, in order to make the material flow output from the storage cabinet to the downstream process uniform and stable, a material transfer roller is also provided at the outlet of the storage cabinet to transfer the tobacco leaves output from the storage cabinet.

[0003] However, in actual production, tobacco leaves output from storage cabinets are often damaged or broken, which affects the quality of the tobacco leaves. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that tobacco leaves output from the current storage cabinet are easily damaged and broken. The present invention provides a material buffer device and storage method for layered storage, which can effectively reduce the damage and breakage of tobacco leaves, thereby improving the quality of tobacco leaves.

[0005] An embodiment of the present invention provides a material caching device for layered storage, which is arranged below the discharge end of a loading belt conveyor. The material caching device includes: a storage cabinet, wherein a plurality of cache belt conveyors are arranged in sequence and spaced apart in the vertical direction. The cache belt conveyors are used to transport and store materials. A material guiding channel is provided between two adjacent cache belt conveyors, and the upper end of the material guiding channel is connected to the discharge end of the cache belt conveyor located above it, and the lower end of the material guiding channel is connected to the feed end of the cache belt conveyor located below it.

[0006] According to another specific embodiment of the present invention, each buffer belt conveyor extends in a horizontal direction, ends of each buffer belt conveyor located on the same side are flush, and conveying directions of two adjacent buffer belt conveyors are opposite.

[0007] According to another specific embodiment of the present invention, it also includes:

[0008] A control system, the control system is electrically connected to each buffer belt machine and is used to control the running speed of each buffer belt machine;

[0009] The quantitative flow tube extends in the vertical direction, the upper end of the quantitative flow tube is connected with the discharge end of the feeding belt conveyor, and the lower end of the quantitative flow tube is connected with the feed port of the storage cabinet. The side wall of the quantitative flow tube is provided with a high-level material detection unit and a low-level material detection unit arranged in sequence from top to bottom. The high-level material detection unit and the low-level material detection unit are both electrically connected to the control system. The high-level material detection unit and the low-level material detection unit are respectively used to detect whether there is material in their respective detection areas.

[0010] According to another specific embodiment of the present invention, a feed photoelectric switch is provided at the feed end of each buffer belt conveyor, and the feed photoelectric switch is electrically connected to the control system. The feed photoelectric switch is used to detect whether there is material at the feed end of the buffer belt conveyor.

[0011] According to another specific embodiment of the present invention, a discharging photoelectric switch is provided at the discharging end of each buffer belt conveyor, which is electrically connected to the control system and used to detect whether there is material at the discharging end of the buffer belt conveyor; an electric valve is provided in each material guiding channel, which is electrically connected to the control system and used to control the switch of the material guiding channel.

[0012] According to another specific embodiment of the present invention, the number of cache belt conveyors is 7, which are, from top to bottom, the first cache belt conveyor, the second cache belt conveyor, the third cache belt conveyor, the fourth cache belt conveyor, the fifth cache belt conveyor, the sixth cache belt conveyor and the seventh cache belt conveyor.

[0013] According to another specific embodiment of the present invention, the number of material guiding channels is 6, a first material guiding channel is provided between the discharge end of the first cache belt conveyor and the feed end of the second cache belt conveyor, a second material guiding channel is provided between the discharge end of the second cache belt conveyor and the feed end of the third cache belt conveyor, a third material guiding channel is provided between the discharge end of the third cache belt conveyor and the feed end of the fourth cache belt conveyor, a fourth material guiding channel is provided between the discharge end of the fourth cache belt conveyor and the feed end of the fifth cache belt conveyor, a fifth material guiding channel is provided between the discharge end of the fifth cache belt conveyor and the feed end of the sixth cache belt conveyor, and a sixth material guiding channel is provided between the discharge end of the sixth cache belt conveyor and the feed end of the seventh cache belt conveyor.

[0014] According to another specific embodiment of the present invention, the number of feed photoelectric switches and discharging photoelectric switches are both 7; the feed end and discharging end of the first cache belt conveyor are respectively provided with a first feed photoelectric switch and a first discharging photoelectric switch, the feed end and discharging end of the second cache belt conveyor are respectively provided with a second feed photoelectric switch and a second discharging photoelectric switch, the feed end and discharging end of the third cache belt conveyor are respectively provided with a third feed photoelectric switch and a third discharging photoelectric switch, the feed end and discharging end of the fourth cache belt conveyor are respectively provided with a fourth feed photoelectric switch and a fourth discharging photoelectric switch, the feed end and discharging end of the fifth cache belt conveyor are respectively provided with a fifth feed photoelectric switch and a fifth discharging photoelectric switch, the feed end and discharging end of the sixth cache belt conveyor are respectively provided with a sixth feed photoelectric switch and a sixth discharging photoelectric switch, and the feed end and discharging end of the seventh cache belt conveyor are respectively provided with a seventh feed photoelectric switch and a seventh discharging photoelectric switch.

[0015] According to another specific embodiment of the present invention, two spaced-apart material guide plates are provided between two adjacent buffer belt conveyors, and the gap between the two material guide plates forms a material guide channel.

[0016] According to another specific embodiment of the present invention, the material guiding channel is arc-shaped, and the material guiding channel is bent toward a side away from the buffer belt conveyor.

[0017] According to another specific embodiment of the present invention, a discharging belt conveyor is provided outside the outlet of the storage cabinet, and the discharging belt conveyor is used to convey the materials output from the storage cabinet to the downstream process.

[0018] An embodiment of the present invention further provides a storage method of any of the aforementioned material cache devices, comprising:

[0019] Step S1: The buffer belt conveyor located on the first upper layer receives the materials provided by the feeding belt conveyor;

[0020] Step S2: The buffer belt conveyor on the first layer starts to run to transport the materials;

[0021] Step S3: After the buffer belt conveyor on the first layer is full of materials, the buffer belt conveyor on the first layer transports the materials to the buffer belt conveyor on the second layer;

[0022] Step S4: The buffer belt conveyor on the second layer starts to run to transport the materials;

[0023] Step S5: After the cache belt conveyor on the second layer is full of materials, the cache belt conveyor on the second layer continues to convey the materials to the cache belt conveyor below it until the materials are conveyed to the cache belt conveyor on the bottom layer.

[0024] According to another specific embodiment of the present invention, the material buffer device is further provided with a control system and a quantitative flow tube, the upper end of the quantitative flow tube is connected to the discharge end of the feeding belt conveyor, and the lower end is connected to the feed port of the storage cabinet, and the side wall of the quantitative flow tube is provided with a high-level material detection unit and a low-level material detection unit arranged in sequence from top to bottom, and the storage method also includes:

[0025] When both the high-level material detection unit and the low-level material detection unit detect material, the control system controls the cache belt conveyor to run at a first speed; when the high-level material detection unit does not detect material and the low-level material detection unit detects material, the control system controls the cache belt conveyor to run at a second speed; when both the high-level material detection unit and the low-level material detection unit detect material, the control system controls the cache belt conveyor to run at a third speed or to stop running, wherein the speed values ​​of the first speed, the second speed and the third speed gradually decrease.

[0026] According to another specific embodiment of the present invention, each buffer belt conveyor feed end is provided with a feed photoelectric switch, the feed photoelectric switch is used to detect whether there is material at the feed end of the buffer belt conveyor, and the storage method further includes:

[0027] When the feed photoelectric switch does not detect that there is material at the feed end of the buffer belt conveyor, the buffer belt conveyor corresponding to the feed photoelectric switch does not start; when the feed photoelectric switch detects that there is material at the feed end of the buffer belt conveyor, the control system controls the buffer belt conveyor corresponding to the feed photoelectric switch to operate.

[0028] According to another specific embodiment of the present invention, each discharging end of the buffer belt conveyor is provided with a discharging photoelectric switch, and the discharging photoelectric switch is used to detect whether there is material at the discharging end of the buffer belt conveyor; each material guide channel is provided with an electric valve, and the electric valve is used to control the switch of the material guide channel, and the storage method also includes:

[0029] When the discharging photoelectric switch does not detect that there is material at the discharging end of the buffer belt conveyor, the control system controls the electric valve in the material guide channel below the discharging photoelectric switch to close; when the discharging photoelectric switch detects that there is material at the discharging end of the buffer belt conveyor, the control system controls the electric valve in the material guide channel below the discharging photoelectric switch to open.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In the embodiment of the present invention, a plurality of buffer belt conveyors are arranged in sequence along the vertical direction in the storage cabinet. When materials need to be stored, the loading belt conveyor transports the materials to the buffer belt conveyor on the top layer, and then the buffer belt conveyor on the top layer gradually transports the materials to the buffer belt conveyors on each layer below. By providing a plurality of buffer belt conveyors, the materials can be dropped in layers to avoid excessive drop height of the materials, and flexible buffering can be achieved, thereby preventing the materials from being collided and squeezed, and effectively avoiding the crushing and damage of the materials. In addition, the embodiment can also make the flow of the materials uniform and stable by controlling the running speed of the buffer belt conveyor. On this basis, the embodiment removes the material-pickup roller arranged at the outlet of the storage cabinet in the prior art, thereby further preventing the crushing of the materials while ensuring the uniform flow of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing a material cache device provided by an embodiment of the present invention in an empty state;

[0033] Figure 2 A schematic diagram showing a material cache device provided by an embodiment of the present invention in a fully loaded state.

[0034] Reference numerals:

[0035] 1. Loading belt conveyor, 2. Storage cabinet, 3. Discharging belt conveyor, 4. Cache belt conveyor, 41. First cache belt conveyor, 42. Second cache belt conveyor, 43. Third cache belt conveyor, 44. Fourth cache belt conveyor, 45. Fifth cache belt conveyor, 46. Sixth cache belt conveyor, 47. Seventh cache belt conveyor, 5. Material guide channel, 51. First material guide channel, 52. Second material guide channel, 53. Third material guide channel, 54. Fourth material guide channel, 55. Fifth material guide channel, 56. Sixth material guide channel, 57. Material guide plate, 6. Quantitative flow tube, 61. High-level material detection unit, 6 2. Low-level material detection unit, 7. Feed photoelectric switch, 71. First feed photoelectric switch, 72. Second feed photoelectric switch, 73. Third feed photoelectric switch, 74. Fourth feed photoelectric switch, 75. Fifth feed photoelectric switch, 76. Sixth feed photoelectric switch, 77. Seventh feed photoelectric switch, 8. Discharge photoelectric switch, 81. First discharge photoelectric switch, 82. Second discharge photoelectric switch, 83. Third discharge photoelectric switch, 84. Fourth discharge photoelectric switch, 85. Fifth discharge photoelectric switch, 86. Sixth discharge photoelectric switch, 87. Seventh discharge photoelectric switch, 9. Material. DETAILED DESCRIPTION

[0036] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0037] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] The terms “first”, “second”, “third”, “fourth”, “fifth”, “sixth”, “seventh”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0039] In the description of this embodiment, it should be noted that the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0041] Tobacco storage cabinets, also known as storage cabinets, are equipment used to store tobacco leaves and adjust the entire production line during the silk production process in the tobacco industry. In the prior art, the storage cabinet is fed by a feeding belt conveyor. Since the height of the storage cabinet is generally high, the feeding belt conveyor needs to transport the tobacco leaves to a high place, and then put the tobacco leaves from a high place into the storage cabinet to achieve feeding. In addition, in order to ensure that the material flow output from the storage cabinet to the downstream process can be uniform and stable, a material transfer roller is also provided at the outlet of the storage cabinet to transfer the tobacco leaves. However, in actual production, the tobacco leaves output from the storage cabinet are often damaged and broken, which affects the quality of the tobacco leaves.

[0042] In order to solve the above technical problems, the inventors have explored and found that the main reason why the tobacco leaves currently output from the storage cabinet are often damaged and broken is that the feeding belt conveyor feeds the materials into the storage cabinet from a high place. Since the feeding height is too high, the materials will collide and squeeze each other during the falling process, causing the materials to be broken to a certain extent; at the same time, the materials are currently pushed by the pushing rollers during the discharge, which will also damage the materials and cause them to be broken.

[0043] Based on this, the present invention provides a material buffer device and storage method for layered storage, which can effectively reduce the damage and breakage of tobacco leaves, thereby improving the quality of tobacco leaves.

[0044] In order to make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0045] refer to Figure 1 and Figure 2 An embodiment of the present invention provides a material cache device for layered storage, which is arranged below the discharge end of a feeding belt conveyor 1. The material cache device includes: a storage cabinet 2, wherein a plurality of cache belt conveyors 4 are arranged in sequence along the vertical direction. The cache belt conveyors 4 are used to convey and store materials 9. A material guide channel 5 is provided between two adjacent cache belt conveyors 4. The upper end of the material guide channel 5 is connected to the discharge end of the cache belt conveyor 4 located above it, and the lower end of the material guide channel 5 is connected to the feed end of the cache belt conveyor 4 located below it. The cache belt conveyor 4 above the material guide channel 5 can convey the material 9 to the cache belt conveyor 4 below the material guide channel 5 through the material guide channel 5.

[0046] When material 9 needs to be stored, the feeding belt conveyor 1 conveys the material 9 to the cache belt conveyor 4 on the first layer above. As the cache belt conveyor 4 on the first layer runs, the upper surface of the cache belt conveyor 4 on the first layer is gradually covered with material 9; after the cache belt conveyor 4 on the first layer is full of material 9, the cache belt conveyor 4 on the first layer conveys the material 9 to the cache belt conveyor 4 on the second layer through the material guide channel 5 below its discharge end. As the cache belt conveyor 4 on the second layer runs, the upper surface of the cache belt conveyor 4 on the second layer is gradually covered with material 9; after the cache belt conveyor 4 on the second layer is full of material 9, the cache belt conveyor 4 on the second layer continues to convey the material 9 to the cache belt conveyors 4 below it in turn until the material 9 is conveyed to the cache belt conveyor 4 on the bottom layer.

[0047] In this embodiment, the material 9 may be tobacco leaves. By providing a plurality of buffer belt conveyors 4 arranged in sequence along the vertical direction in the storage cabinet 2, the tobacco leaves can fall layer by layer in the storage cabinet 2, realizing flexible buffering, avoiding collision and squeezing of the tobacco leaves due to excessive falling height, thereby effectively avoiding the crushing and damage of the tobacco leaves. In addition, this embodiment can also make the flow of tobacco leaves uniform and stable by controlling the running speed of the buffer belt conveyor 4. On this basis, this embodiment removes the material-pickup roller provided at the outlet of the storage cabinet 2 in the prior art, which can further prevent the crushing of tobacco leaves while ensuring the uniform flow of tobacco leaves, thereby improving the quality of tobacco leaves.

[0048] Furthermore, each buffer belt conveyor 4 extends in the horizontal direction, and the ends of each buffer belt conveyor 4 on the same side are flush with each other (that is, the ends of each buffer belt conveyor 4 on the same side are flush with each other, and the ends on the other side are also flush with each other), and the conveying directions of two adjacent buffer belt conveyors 4 are opposite (such as Figure 1 Specifically, the conveying directions of the buffer belt conveyors 4 are respectively as follows: Figure 1 As shown by the arrow in. Through the above arrangement of the buffer belt conveyor 4 and the setting of the conveying direction, the volume of the material buffer device can be reduced without reducing the storage capacity of the material buffer device, thereby reducing the occupied space of the material buffer device.

[0049] Furthermore, the material buffer device provided in this embodiment also includes a control system and a quantitative flow tube 6. The control system is electrically connected to each buffer belt conveyor 4 and is used to control the running speed of each buffer belt conveyor 4. The quantitative flow tube 6 extends in the vertical direction. The upper end of the quantitative flow tube 6 is connected to the discharge end of the feeding belt conveyor 1, and the lower end of the quantitative flow tube 6 is connected to the feed port of the storage cabinet 2. The material 9 output by the feeding belt conveyor 1 falls into the storage cabinet 2 through the quantitative flow tube 6. The side wall of the quantitative flow tube 6 is provided with a high-level material detection unit 61 and a low-level material detection unit 62 arranged in sequence from top to bottom. The high-level material detection unit 61 and the low-level material detection unit 62 are both electrically connected to the control system. The high-level material detection unit 61 and the low-level material detection unit 62 are respectively used to detect whether there is material 9 in their respective detection areas.

[0050] When both the high-level material detection unit 61 and the low-level material detection unit 62 detect material 9, the control system controls the cache belt conveyor 4 to run at a first speed; when the high-level material detection unit 61 does not detect material 9 and the low-level material detection unit 62 detects material 9, the control system controls the cache belt conveyor 4 to run at a second speed; when both the high-level material detection unit 61 and the low-level material detection unit 62 do not detect material 9, the control system controls the cache belt conveyor 4 to run at a third speed or stop running, wherein the speed values ​​of the first speed, the second speed and the third speed gradually decrease.

[0051] The applicant found that when the material height in the quantitative flow tube 6 is too high, the material is easily crushed due to squeezing; when the material height in the quantitative flow tube 6 is too low, insufficient material supply may occur and empty material sections may appear, affecting subsequent production. This embodiment sets a high-level material detection unit 61 and a low-level material detection unit 62. When both the high-level material detection unit 61 and the low-level material detection unit 62 detect material 9, it means that the material height in the quantitative flow tube 6 is too high. At this time, the buffer belt conveyor 4 runs at a faster speed, which can increase the material output flow rate of the quantitative flow tube 6, thereby reducing the material height of the quantitative flow tube 6 to prevent the material from being crushed due to squeezing; when both the high-level material detection unit 61 and the low-level material detection unit 62 do not detect the material 9, it means that the material height in the quantitative flow tube 6 is too low. At this time, the buffer belt conveyor 4 runs at a slower speed, which can reduce the material output flow rate of the quantitative flow tube 6, thereby increasing the material height of the quantitative flow tube 6 to prevent the problem of insufficient material supply. When the high-level material detection unit 61 does not detect material 9 and the low-level material detection unit 62 detects material 9, it means that the material height in the quantitative flow tube 6 is within the normal range. At this time, the buffer belt conveyor 4 runs at medium speed to keep the material in the quantitative flow tube 6 within the normal range.

[0052] Furthermore, each buffer belt conveyor 4 is provided with a feed photoelectric switch 7 at the feed end thereof, and the feed photoelectric switch 7 is electrically connected to the control system, and the feed photoelectric switch 7 is used to detect whether there is material 9 at the feed end of the buffer belt conveyor 4. When the feed photoelectric switch 7 does not detect that there is material 9 at the feed end of the buffer belt conveyor 4, the buffer belt conveyor 4 corresponding to the feed photoelectric switch 7 does not start to save energy; when the feed photoelectric switch 7 detects that there is material 9 at the feed end of the buffer belt conveyor 4, the control system controls the buffer belt conveyor 4 corresponding to the feed photoelectric switch 7 to operate.

[0053] Furthermore, each discharging end of the buffer belt conveyor 4 is provided with a discharging photoelectric switch 8, which is electrically connected to the control system and is used to detect whether there is material 9 at the discharging end of the buffer belt conveyor 4; each guide channel 5 is provided with an electric valve, which is electrically connected to the control system and is used to control the switch of the guide channel 5. When the discharging photoelectric switch 8 does not detect that there is material 9 at the discharging end of the buffer belt conveyor 4, the control system controls the electric valve in the guide channel 5 below the discharging photoelectric switch 8 to close; when the discharging photoelectric switch 8 detects that there is material 9 at the discharging end of the buffer belt conveyor 4, the control system controls the electric valve in the guide channel 5 below the discharging photoelectric switch 8 to open, so that the material can pass through the guide channel 5 and fall onto the buffer belt conveyor 4 below.

[0054] This embodiment does not limit the specific number of the buffer belt conveyor 4. For example, Figure 2 The number of the cache belt conveyors 4 can be 7, which are, from top to bottom, the first cache belt conveyor 41, the second cache belt conveyor 42, the third cache belt conveyor 43, the fourth cache belt conveyor 44, the fifth cache belt conveyor 45, the sixth cache belt conveyor 46 and the seventh cache belt conveyor 47.

[0055] The number of material guiding channels 5 is 6. A first material guiding channel 51 is provided between the discharge end of the first cache belt conveyor 41 and the feed end of the second cache belt conveyor 42, a second material guiding channel 52 is provided between the discharge end of the second cache belt conveyor 42 and the feed end of the third cache belt conveyor 43, a third material guiding channel 53 is provided between the discharge end of the third cache belt conveyor 43 and the feed end of the fourth cache belt conveyor 44, a fourth material guiding channel 54 is provided between the discharge end of the fourth cache belt conveyor 44 and the feed end of the fifth cache belt conveyor 45, a fifth material guiding channel 55 is provided between the discharge end of the fifth cache belt conveyor 45 and the feed end of the sixth cache belt conveyor 46, and a sixth material guiding channel 56 is provided between the discharge end of the sixth cache belt conveyor 46 and the feed end of the seventh cache belt conveyor 47.

[0056] The number of feed photoelectric switches 7 and discharging photoelectric switches 8 is 7 each, among which the feed end and discharging end of the first cache belt conveyor 41 are respectively provided with a first feed photoelectric switch 71 and a first discharging photoelectric switch 81, the feed end and discharging end of the second cache belt conveyor 42 are respectively provided with a second feed photoelectric switch 72 and a second discharging photoelectric switch 82, the feed end and discharging end of the third cache belt conveyor 43 are respectively provided with a third feed photoelectric switch 73 and a third discharging photoelectric switch 83, the feed end and discharging end of the fourth cache belt conveyor 44 are respectively provided with a fourth feed photoelectric switch 74 and a fourth discharging photoelectric switch 84, the feed end and discharging end of the fifth cache belt conveyor 45 are respectively provided with a fifth feed photoelectric switch 75 and a fifth discharging photoelectric switch 85, the feed end and discharging end of the sixth cache belt conveyor 46 are respectively provided with a sixth feed photoelectric switch 76 and a sixth discharging photoelectric switch 86, and the feed end and discharging end of the seventh cache belt conveyor 47 are respectively provided with a seventh feed photoelectric switch 77 and a seventh discharging photoelectric switch 87.

[0057] Before the feeding belt conveyor 1 conveys the material 9 into the storage cabinet 2, the buffer belt conveyors 4 in the storage cabinet 2 are not started. When the feeding belt conveyor 1 conveys the material 9 into the storage cabinet 2, the material 9 first enters the feeding end of the first buffer belt conveyor 41, the first feeding photoelectric switch 71 is triggered and sends a signal to the control system, and the control system controls the first buffer belt conveyor 41 to start, and the material 9 is conveyed along the first buffer belt conveyor 41. Figure 2 When the material 9 enters the discharge end of the first buffer belt conveyor 41, the first discharge photoelectric switch 81 is triggered and sends a signal to the control system, which controls the electric valve in the first guide channel 51 to open, and the material 9 on the first buffer belt conveyor 41 falls into the feed end of the second buffer belt conveyor 42 through the first guide channel 51, and then the second feed photoelectric switch 72 is triggered and sends a signal to the control system, which controls the second buffer belt conveyor 42 to start, and the material 9 is transported along the first buffer belt conveyor 41. Figure 2When the material 9 enters the discharge end of the second buffer belt conveyor 42, the second discharge photoelectric switch 82 is triggered and sends a signal to the control system. The control system controls the electric valve in the second guide channel 52 to open, and the material 9 on the second buffer belt conveyor 42 falls onto the third buffer belt conveyor 43 through the second guide channel 52. Then the third buffer belt conveyor 43, the fourth buffer belt conveyor 44, the fifth buffer belt conveyor 45 and the sixth buffer belt conveyor 46 successively operate according to the above working steps. At the same time, the control system adjusts the operating speed of each buffer belt conveyor 4 according to the material height in the quantitative flow tube 6, until the material 9 enters the discharge end of the seventh buffer belt conveyor 47, and the seventh discharge photoelectric switch 87 is triggered. If the first feed photoelectric switch 71 detects that there is material at this time, it means that the storage cabinet 2 is full of materials. If the control system does not receive the discharge instruction at this time, the buffer belt conveyors 4 in the storage cabinet 2 stop running, and the feeding belt conveyor 1 no longer feeds into the storage cabinet 2. When the control system receives the discharge instruction, all buffer belt conveyors 4 keep running to output the material 9 to the discharge belt conveyor 3.

[0058] Furthermore, two spaced material guide plates 57 are provided between two adjacent buffer belt conveyors 4, and the gap between the two material guide plates 57 forms a material guide channel 5. Specifically, the material guide channel 5 is arc-shaped, and the material guide channel 5 is bent toward the side away from the buffer belt conveyor 4. By setting the material guide channel 5 to be a curved arc, the material 9 can pass through the material guide channel 5 smoothly, and the material is prevented from being stuck in the material guide channel 5.

[0059] Furthermore, a discharging belt conveyor 3 is provided outside the outlet of the storage cabinet 2, and the discharging belt conveyor 3 is used to convey the material 9 output from the storage cabinet 2 to the downstream process.

[0060] This embodiment also provides a storage method for any of the above-mentioned material cache devices, including:

[0061] Step S1: The buffer belt conveyor 4 located at the first upper layer receives the material 9 provided by the feeding belt conveyor 1;

[0062] Step S2: the buffer belt conveyor 4 of the first layer starts to operate to convey the material 9; Step S3: after the buffer belt conveyor 4 of the first layer is full of the material 9, the buffer belt conveyor 4 of the first layer conveys the material 9 to the buffer belt conveyor 4 of the second layer;

[0063] Step S4: The cache belt conveyor 4 on the second layer starts running to convey the material 9; Step S5: After the cache belt conveyor 4 on the second layer is full of material 9, the cache belt conveyor 4 on the second layer continues to convey the material 9 to the cache belt conveyor 4 below it until the material 9 is conveyed to the cache belt conveyor 4 on the bottom layer.

[0064] Further, when both the high-level material detection unit 61 and the low-level material detection unit 62 detect material 9, the control system controls the cache belt conveyor 4 to run at a first speed; when the high-level material detection unit 61 does not detect material 9 and the low-level material detection unit 62 detects material 9, the control system controls the cache belt conveyor 4 to run at a second speed; when both the high-level material detection unit 61 and the low-level material detection unit 62 do not detect material 9, the control system controls the cache belt conveyor 4 to run at a third speed or stop running, wherein the speed values ​​of the first speed, the second speed and the third speed gradually decrease.

[0065] Furthermore, when the feed photoelectric switch 7 does not detect that there is material 9 at the feed end of the cache belt conveyor 4, the cache belt conveyor 4 corresponding to the feed photoelectric switch 7 does not start; when the feed photoelectric switch 7 detects that there is material 9 at the feed end of the cache belt conveyor 4, the control system controls the cache belt conveyor 4 corresponding to the feed photoelectric switch 7 to operate.

[0066] Furthermore, when the discharging photoelectric switch 8 does not detect the presence of material 9 at the discharging end of the buffer belt conveyor 4, the control system controls the electric valve in the material guide channel 5 below the discharging photoelectric switch 8 to close; when the discharging photoelectric switch 8 detects the presence of material 9 at the discharging end of the buffer belt conveyor 4, the control system controls the electric valve in the material guide channel 5 below the discharging photoelectric switch 8 to open.

[0067] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A material buffer device for layered storage, arranged below the discharge end of a feeding belt conveyor, characterized in that: The material caching device includes: a storage cabinet, wherein a plurality of cache belt conveyors are arranged in sequence along the vertical direction, and the cache belt conveyors are used to transport and store materials. A material guiding channel is provided between two adjacent cache belt conveyors, and the upper end of the material guiding channel is connected to the discharge end of the cache belt conveyor located above it, and the lower end of the material guiding channel is connected to the feed end of the cache belt conveyor located below it.

2. The material caching device according to claim 1, characterized in that: Each of the buffer belt conveyors extends in a horizontal direction, ends of each of the buffer belt conveyors located on the same side are flush with each other, and conveying directions of two adjacent buffer belt conveyors are opposite.

3. The material caching device according to claim 2, characterized in that: Also includes: A control system, the control system is electrically connected to each of the buffer belt machines and is used to control the running speed of each of the buffer belt machines; A quantitative flow tube extends in a vertical direction, the upper end of the quantitative flow tube is connected to the discharge end of the feeding belt conveyor, and the lower end of the quantitative flow tube is connected to the feed port of the storage cabinet. A high-level material detection unit and a low-level material detection unit are arranged in sequence from top to bottom on the side wall of the quantitative flow tube. The high-level material detection unit and the low-level material detection unit are both electrically connected to the control system, and the high-level material detection unit and the low-level material detection unit are respectively used to detect whether there is material in their respective detection areas.

4. The material caching device according to claim 3, characterized in that: A feed photoelectric switch is provided at the feed end of each of the buffer belt conveyors. The feed photoelectric switch is electrically connected to the control system and is used to detect whether there is material at the feed end of the buffer belt conveyor.

5. The material caching device according to claim 4, characterized in that: Each of the cache belt conveyors is provided with a discharge photoelectric switch at the discharge end, which is electrically connected to the control system and is used to detect whether there is material at the discharge end of the cache belt conveyor; each of the material guide channels is provided with an electric valve, which is electrically connected to the control system and is used to control the switch of the material guide channel.

6. The material caching device according to claim 5, characterized in that: The number of the cache belt conveyors is 7, which are, from top to bottom, the first cache belt conveyor, the second cache belt conveyor, the third cache belt conveyor, the fourth cache belt conveyor, the fifth cache belt conveyor, the sixth cache belt conveyor and the seventh cache belt conveyor.

7. The material caching device according to claim 6, characterized in that: The number of the material guiding channels is 6. A first material guiding channel is provided between the discharge end of the first cache belt conveyor and the feed end of the second cache belt conveyor, a second material guiding channel is provided between the discharge end of the second cache belt conveyor and the feed end of the third cache belt conveyor, a third material guiding channel is provided between the discharge end of the third cache belt conveyor and the feed end of the fourth cache belt conveyor, a fourth material guiding channel is provided between the discharge end of the fourth cache belt conveyor and the feed end of the fifth cache belt conveyor, a fifth material guiding channel is provided between the discharge end of the fifth cache belt conveyor and the feed end of the sixth cache belt conveyor, and a sixth material guiding channel is provided between the discharge end of the sixth cache belt conveyor and the feed end of the seventh cache belt conveyor.

8. The material caching device according to claim 7, characterized in that: The number of the feed photoelectric switches and the discharging photoelectric switches are both 7; the feed end and the discharging end of the first cache belt conveyor are respectively provided with a first feed photoelectric switch and a first discharging photoelectric switch, the feed end and the discharging end of the second cache belt conveyor are respectively provided with a second feed photoelectric switch and a second discharging photoelectric switch, the feed end and the discharging end of the third cache belt conveyor are respectively provided with a third feed photoelectric switch and a third discharging photoelectric switch, the feed end and the discharging end of the fourth cache belt conveyor are respectively provided with a fourth feed photoelectric switch and a fourth discharging photoelectric switch, the feed end and the discharging end of the fifth cache belt conveyor are respectively provided with a fifth feed photoelectric switch and a fifth discharging photoelectric switch, the feed end and the discharging end of the sixth cache belt conveyor are respectively provided with a sixth feed photoelectric switch and a sixth discharging photoelectric switch, and the feed end and the discharging end of the seventh cache belt conveyor are respectively provided with a seventh feed photoelectric switch and a seventh discharging photoelectric switch.

9. The material cache device according to any one of claims 1 to 8, characterized in that: Two spaced-apart material guide plates are arranged between two adjacent buffer belt conveyors, and the gap between the two material guide plates forms the material guide channel.

10. The material caching device according to claim 9, characterized in that: The material guiding channel is arc-shaped, and the material guiding channel is bent toward a side away from the buffer belt conveyor.

11. The material caching device according to any one of claims 1 to 8, characterized in that: A discharging belt conveyor is provided outside the outlet of the storage cabinet, and the discharging belt conveyor is used to transport the materials output from the storage cabinet to the downstream process.

12. A storage method for a material cache device according to any one of claims 1 to 11, characterized in that: include: Step S1: the buffer belt conveyor located at the first upper layer receives the material provided by the feeding belt conveyor; Step S2: the buffer belt conveyor of the first layer starts to operate to transport materials; Step S3: After the buffer belt conveyor on the first layer is full of materials, the buffer belt conveyor on the first layer transports the materials to the buffer belt conveyor on the second layer; Step S4: the cache belt conveyor on the second layer starts running to transport materials; Step S5: after the cache belt conveyor on the second layer is full of materials, the cache belt conveyor on the second layer continues to transport the materials to the cache belt conveyor below it until the materials are transported to the cache belt conveyor on the bottom layer.

13. The storage method according to claim 12, characterized in that: The material buffer device is also provided with a control system and a quantitative flow tube, the upper end of the quantitative flow tube is connected to the discharge end of the feeding belt conveyor, and the lower end is connected to the feed port of the storage cabinet, and the side wall of the quantitative flow tube is provided with a high-level material detection unit and a low-level material detection unit arranged in sequence from top to bottom, and the storage method also includes: When both the high-level material detection unit and the low-level material detection unit detect material, the control system controls the cache belt conveyor to run at a first speed; when the high-level material detection unit does not detect material and the low-level material detection unit detects material, the control system controls the cache belt conveyor to run at a second speed; when both the high-level material detection unit and the low-level material detection unit detect material, the control system controls the cache belt conveyor to run at a third speed or to stop running, wherein the speed values ​​of the first speed, the second speed and the third speed gradually decrease.

14. The storage method according to claim 13, characterized in that: Each of the feed ends of the buffer belt conveyor is provided with a feed photoelectric switch, and the feed photoelectric switch is used to detect whether there is material at the feed end of the buffer belt conveyor. The storage method also includes: When the feed photoelectric switch does not detect that there is material at the feed end of the cache belt conveyor, the cache belt conveyor corresponding to the feed photoelectric switch does not start; when the feed photoelectric switch detects that there is material at the feed end of the cache belt conveyor, the control system controls the cache belt conveyor corresponding to the feed photoelectric switch to operate.

15. The storage method according to claim 14, characterized in that: Each of the discharging ends of the buffer belt conveyor is provided with a discharging photoelectric switch, and the discharging photoelectric switch is used to detect whether there is material at the discharging end of the buffer belt conveyor; Each of the material guiding channels is provided with an electric valve, and the electric valve is used to control the switch of the material guiding channel. The storage method further includes: When the discharging photoelectric switch does not detect that there is material at the discharging end of the buffer belt conveyor, the control system controls the electric valve in the material guiding channel below the discharging photoelectric switch to close; when the discharging photoelectric switch detects that there is material at the discharging end of the buffer belt conveyor, the control system controls the electric valve in the material guiding channel below the discharging photoelectric switch to open.

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