Mechanical contact type biomass storage device

Abstract

The utility model discloses a mechanical contact type biomass storage device, and relates to the technical field of stock bin material detection. The feeding device comprises a storage bin, the top face of the storage bin is open, the storage bin is used for feeding, an inclined partition plate is constructed in the storage bin, and the storage bin is divided into a material cavity and an operation cavity through the inclined partition plate; a material conveying mechanism is constructed in the operation cavity and is used for conveying materials in the material cavity into the operation box; a rotary damping mechanism is mounted on the vertical side wall of the material cavity, and the rotating end of the rotary damping mechanism faces the inclined partition plate; the rotary damping mechanism and a feeding device for feeding materials to the storage bin are electrically communicated with a PLC (Programmable Logic Controller); the problems that an existing biomass discharging device is inaccurate in material level detection of internal materials, and misjudgment is prone to occurring are solved.

Description

Technical Field

[0001] This utility model relates to the field of material detection technology in silos, specifically, it is a biomass material storage device. Background Technology

[0002] Traditional photoelectric sensor switches in biomass silos suffer from signal misinterpretation due to dust obstruction. For example, they might misinterpret a silo as having material when it is depleted, or as being empty when it is full. To maintain a safe, continuous, and efficient production process, it is necessary to prevent interruptions in boiler fuel supply to the silo or excessive accumulation caused by sensor failure.

[0003] Among them, biomass combustion pellets, such as wood chips and straw pellets, are prone to generating dust during the material silo transportation process. When traditional photoelectric sensors are exposed to high dust environments for a long time, the light transmittance will decrease due to the rapid accumulation of dust on the surface of the photoelectric probe, making it impossible to accurately detect the material height. Frequent manual cleaning is required, which affects continuous production. In extreme humidity environments, dust agglomerates, causing permanent damage to the sensor.

[0004] One issue is that the transparent window material is easily worn down by biomass pellets, and dust adhesion can reduce light transmittance, thus affecting observation. Furthermore, during the feeding process, the biomass pellets are typically 8-15mm in diameter. If they fall freely from above the photoelectric sensor's monitoring area, they can easily block the light path, causing false triggers. This can also lead to continuous false triggers causing signal oscillations and frequent start-ups and shutdowns of the feeding system.

[0005] Moreover, whether detection is performed using photoelectric sensors or machinery, accidental touches are likely to occur. Utility Model Content

[0006] The purpose of this invention is to provide a biomass material storage device to solve the problem that existing biomass discharge devices are inaccurate in detecting the material level inside the device and are prone to misjudgment.

[0007] To solve the above problems, the present invention adopts the following technical means:

[0008] A mechanical contact biomass storage device includes a storage bin with an open top surface for feeding. The storage bin is equipped with an inclined partition that divides the storage bin into a material chamber and a working chamber.

[0009] The working chamber is equipped with a material conveying mechanism for conveying the material in the material chamber to the working box;

[0010] A rotary damping mechanism is installed on the vertical sidewall of the material chamber, and the rotating end of the rotary damping mechanism is arranged facing the inclined partition.

[0011] The rotary damping mechanism and the feeding device that supplies material to the storage bin are electrically connected to the PLC controller.

[0012] Preferably, the rotating end of the rotary damping mechanism and the upper end of the inclined partition are located on the same plane.

[0013] Furthermore, the inclined material elevator serves as the feeding device, with the material elevator's inlet located above the inclined partition on the side away from the rotating end of the rotary damping mechanism.

[0014] Furthermore, the PLC controller is set with a 3-second delay threshold as the signal holding threshold for the rotary damping mechanism.

[0015] Furthermore, the rotational damping mechanism includes:

[0016] The contact mechanism of the rotating end includes a positioning rod, a sleeve is rotatably sleeved on the positioning rod, the side wall of the sleeve is constructed with a through mounting groove, a baffle is movably installed in the mounting groove, one end of the baffle extends out of the mounting groove and is set vertically downward, and the other end of the baffle is located inside the sleeve and a limiting block is installed, the limiting block abuts against the inner wall of the sleeve.

[0017] The positioning rod is provided with several through slots around its axis, the width of the through slots is not less than the width of the limiting block, and the length of the through slots matches the length of the baffle.

[0018] An eccentric rotating mechanism is provided, with its eccentric end connected to the positioning rod. The eccentric rotating mechanism is installed on the side wall of the storage bin, and its eccentric end extends into the material cavity.

[0019] Furthermore, the eccentric rotation mechanism includes:

[0020] The inner disc has a coaxially constructed interlayer. The inner disc has a coaxially constructed through first through groove. A baffle is slidably embedded in the interlayer. The baffle has a through hole at an off-center position relative to the first through groove.

[0021] A power mechanism includes an outer disc with a coaxially arranged limiting groove. A rotary motor is coaxially mounted on the side of the outer disc opposite to the limiting groove. The rotating end of the rotary motor extends coaxially into the limiting groove and is coaxially mounted with a first gear. A second gear is coaxially arranged in the limiting groove and meshes with the first gear. The inner wall of the limiting groove has a toothed structure that meshes with the second gear. A connecting rod is coaxially mounted on the side of the second gear opposite to the rotary motor. An insertion groove is formed on the side of the connecting rod facing away from the second gear.

[0022] The connecting rod passes through the through hole and is coaxially connected to the positioning rod.

[0023] Furthermore, the bottom surface of the limiting groove is provided with an annular groove around its axis, and a support rod is coaxially mounted on the side of the second gear facing away from the connecting rod, with the end of the support rod slidably disposed in the annular groove.

[0024] This utility model has the following beneficial effects during use:

[0025] Material enters the storage silo from the top surface downwards. The inclined baffles not only separate the material chamber from the working chamber, preventing the biomass from affecting the mechanical structure of the conveying mechanism, but also, with a rotary damping mechanism installed on the side wall of the silo, the material falling into the silo is allowed to slide down the inclined baffles, achieving efficient collection, as the discharge end of the feeding device is kept as far away from the rotary damping mechanism as possible. Most importantly, keeping the discharge end away from the rotary damping mechanism prevents the biomass from colliding with the rotating end of the mechanism during its descent, thus avoiding any malfunction of the rotary damping mechanism.

[0026] Furthermore, a rotary damping mechanism is used to detect the material level in the storage silo. When the material contact end of the rotary damping mechanism comes into contact with the top surface of the material, the mechanism outputs a damping signal to the PLC controller. The PLC controller then outputs an electrical control signal to shut down the material elevator used for feeding. When the material level in the silo drops, the material contact end releases contact, the damping signal output by the rotary damping mechanism decreases, and the PLC controller, upon receiving this decrease, controls the material elevator to continue feeding. Thus, by using the mechanical contact between the rotary damping mechanism and the material, the material level is determined, effectively avoiding misjudgments caused by large biomass particles obstructing the light path. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a schematic diagram of the rotary damping mechanism of this utility model.

[0029] Figure 3 for Figure 2 A schematic diagram of the explosion structure.

[0030] Figure 4 This is a cross-sectional front view of the contact mechanism of this utility model.

[0031] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0032] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure.

[0033] Among them, 1-storage bin, 2-rotation damping mechanism, 3-eccentric rotation mechanism, 4-contact mechanism, 5-positioning rod, 6-sleeve, 7-installation groove, 8-baffle, 9-limiting block, 10-through groove, 16-first gear, 17-second gear, 18-rotating motor, 19-inner disc, 20-layer, 21-first through groove, 22-baffle, 23-through hole, 24-outer disc, 25-limiting groove, 26-annular groove, 30-support rod, 31-connecting rod, 32-insertion groove, 33-inclined partition, 34-material cavity, 35-working cavity, 36-material conveying mechanism, 37-material elevator. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0040] Please refer to Figures 1 to 6 As shown, a mechanical contact biomass storage device includes a storage bin 1 with an open top surface for feeding. The storage bin 1 is equipped with an inclined partition 33, which divides the storage bin 1 into a material chamber 34 and a working chamber 35.

[0041] The working chamber 35 is equipped with a material conveying mechanism 36, which is used to convey the material in the material chamber 34 to the working box.

[0042] A rotary damping mechanism 2 is installed on the vertical sidewall of the material chamber 34, and the rotating end of the rotary damping mechanism 2 is set toward the inclined partition 33.

[0043] The rotary damping mechanism 2 and the feeding device that supplies material to the storage bin 1 are electrically connected to the PLC controller.

[0044] In this way, the material enters the storage silo 1 from the top surface from above. Under the action of the inclined baffle 33, not only is the material chamber 34 separated from the working chamber 35, preventing the biomass material from affecting the mechanical structure of the conveying mechanism 36, but also, with the rotary damping mechanism 2 installed on the side wall of the storage silo 1, the material falling into the storage silo 1 can slide down along the inclined baffle 33 after the discharge end of the feeding device is kept as far away from the rotary damping mechanism 2 as possible, thus achieving good collection. Moreover, most importantly, keeping the discharge end away from the rotary damping mechanism 2 prevents the biomass material from colliding with the rotating end of the rotary damping mechanism 2 during the falling process, thus avoiding the rotary damping mechanism 2 from malfunctioning.

[0045] Furthermore, a rotary damping mechanism 2 is used to detect the material level in the storage silo 1. When the material contact end of the rotary damping mechanism 2 comes into contact with the top surface of the material, the rotary damping mechanism 2 outputs a damping signal to the PLC controller. The PLC controller then outputs an electrical control signal to shut down the material elevator 37 used for feeding. When the material level in the storage silo 1 drops, the material contact end releases contact, the damping signal output by the rotary damping mechanism 2 decreases, and the PLC controller, upon receiving the decreased damping signal, controls the material elevator 37 used for feeding to continue feeding. Thus, the material level is determined through the mechanical contact between the rotary damping mechanism 2 and the material, effectively avoiding misjudgments caused by large biomass particles blocking the light path.

[0046] Furthermore, in order to accurately detect the material level of the rotary damping mechanism 2 and minimize the accidental activation of the rotary damping mechanism 2 by the falling material, the rotating end of the rotary damping mechanism 2 and the upper end of the inclined partition 33 are located on the same plane.

[0047] For the feeding device, the inclined material elevator 37 serves as the feeding device, and the inlet of the material elevator 37 is located above the side of the inclined partition 33 away from the rotating end of the rotation damping mechanism 2.

[0048] Furthermore, in order to further reduce the occurrence of misjudgments, the PLC controller sets a 3-second delay threshold as the signal holding threshold for the rotary damping mechanism 2.

[0049] Specifically, after the PLC controller receives a signal indicating a decrease in damping for 3 seconds, it outputs an electrical signal to control the material elevator 37 to start. Similarly, after the PLC controller receives a signal indicating an increase in damping for 3 seconds, it outputs an electrical signal to control the material elevator 37 to stop.

[0050] However, during the descent of biomass material, some of it may collide with the rotating end of the rotary damping mechanism 2 due to excessive unloading speed, causing accidental activation. To significantly reduce the collision between the material and the rotating end during descent, the vertical projected area of ​​the rotating end is minimized.

[0051] Specifically, the rotational damping mechanism 2 includes:

[0052] The contact mechanism 4, which is the rotating end, includes a positioning rod 5. A sleeve 6 is rotatably sleeved on the positioning rod 5. The side wall of the sleeve 6 is constructed with a through mounting groove 7. A baffle 8 is movably installed in the mounting groove 7. One end of the baffle 8 extends out of the mounting groove 7 and is set vertically downward. The other end of the baffle 8 is located inside the sleeve 6 and a limiting block 9 is installed. The limiting block 9 abuts against the inner wall of the sleeve 6.

[0053] The positioning rod 5 is provided with a plurality of through grooves 10 around its axis. The width of the through grooves 10 is not less than the width of the limiting block 9, and the length of the through grooves 10 matches the length of the baffle 8.

[0054] An eccentric rotation mechanism 3 is provided, with its eccentric end connected to the positioning rod 5. The eccentric rotation mechanism 3 is installed on the side wall of the storage bin 1, and its eccentric end extends into the material cavity 34.

[0055] Furthermore, the eccentric rotation mechanism 3 includes:

[0056] The inner disc 19 has a coaxially constructed interlayer 20. The inner disc 19 has a coaxially constructed through first through groove 21. A baffle 22 is slidably embedded in the interlayer 20. The baffle 22 has a through hole 23 at an eccentric position relative to the first through groove 21.

[0057] The power mechanism includes an outer disc 24, on which a limiting groove 25 is coaxially constructed. A rotary motor 18 is coaxially mounted on the side of the outer disc 24 opposite to the limiting groove 25. The rotating end of the rotary motor 18 extends coaxially into the limiting groove 25 and is coaxially mounted with a first gear 16. A second gear 17 is coaxially provided in the limiting groove 25 with the first gear 16. The second gear 17 meshes with the first gear 16. The inner wall of the limiting groove 25 is provided with a tooth structure, which meshes with the second gear 17. A connecting rod 31 is coaxially mounted on the side of the second gear 17 opposite to the rotary motor 18. An insertion groove 32 is constructed on the side of the connecting rod 31 facing away from the second gear 17.

[0058] The connecting rod 31 passes through the through hole 23 and is coaxially connected to the positioning rod 5.

[0059] Furthermore, the bottom surface of the limiting groove 25 is provided with an annular groove 26 around its axis, and a support rod 30 is coaxially mounted on the side of the second gear 17 facing away from the connecting rod 31, with the end of the support rod 30 slidably disposed in the annular groove 26.

[0060] In this way, by allowing the positioning rod 5 of the contact mechanism 4 to rotate eccentrically on the eccentric rotation mechanism 3, during the eccentric rotation of the positioning rod 5, the sleeve 6, on which the baffle 8 is installed, can continuously rotate coaxially around the positioning rod 5 under the weight of the baffle 8 itself, before the baffle 8 comes into contact with the material, thus keeping the baffle 8 in a vertical state at all times. This facilitates the contact between the baffle 8 and the top surface of the material, and most importantly, it prevents materials falling from above from colliding with the horizontally positioned baffle 8, which would cause changes in the damping output signal of the entire rotary damping mechanism 2, resulting in false triggering and the problem of the material elevator 37 constantly starting and stopping. When the baffle 8 contacts the top surface of the material, as the positioning rod 5 rotates downwards, the baffle 8 moves along the mounting groove 7 towards the sleeve 6 under the action of contact between the baffle 8 and the material. As the positioning rod 5 rotates, when the limiting block 9 on the baffle 8 aligns with the through groove 10, the limiting block 9 enters the through groove 10. At this time, the baffle 8 and the positioning rod 5 are matched and positioned. The damping of the baffle 8 and the material can be transmitted through the positioning rod 5, thereby allowing the rotary damping mechanism 2 to output a changing damping signal to the PLC controller. When the baffle 8 contacts the material, that is, when the material level drops and feeding is required, the limiting block 9 disengages from the through groove 10 under the action of the baffle 8's own weight. At this time, the positioning rod 5 and the baffle 8 are in contact. As the positioning rod 5 continues to rotate, the baffle 8 will always remain vertical under the action of its own weight, avoiding large-area accidental collisions with the material particles.

[0061] Specifically, by matching the limiting block 9 with the mounting groove 7 and setting the geometric properties of the limiting block 9, it is possible to ensure that the sleeve 6 can rotate normally around the positioning rod 5, while also ensuring that the limiting block 9 can be completely removed from the mounting groove 7.

[0062] When installing the entire eccentric rotation mechanism 3, it is only necessary to open a channel matching the limiting groove 25 on the side wall of the storage bin 1, then place the inner disc 19 on the inner wall of the storage bin 1 and the outer disc 24 on the outer wall of the storage bin 1, clamp the side wall of the storage bin 1 between the inner disc 19 and the outer disc 24, and use bolts to pass through the inner disc 19, the side wall of the storage bin 1 and the outer disc 24, so that the inner disc 19 and the outer disc 24 tightly clamp the side wall of the storage bin 1, thus completing the stable and quick installation of the entire eccentric rotation mechanism 3.

[0063] Furthermore, by utilizing the inner disc 19, the baffle 22 can freely rotate around its axis within the interlayer 20, and the baffle 22 separates the first through slot 21. This allows the connection between the contact mechanism 4 and the second gear 17 to extend through the through hole 23, so that the eccentric rotation of the second gear 17 drives the rotation of the turntable. This achieves the isolation of the transmission box from the outside without affecting the eccentric rotation of the positioning rod 5 driven by the second gear 17.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical contact biomass storage device, comprising a storage bin (1) with an open top surface for feeding, characterized in that, The storage bin (1) is constructed with an inclined partition (33), which divides the storage bin (1) into a material chamber (34) and a working chamber (35). The working chamber (35) is equipped with a material conveying mechanism (36) for conveying the material in the material chamber (34) to the working box; A rotary damping mechanism (2) is installed on the vertical sidewall of the material chamber (34), and the rotating end of the rotary damping mechanism (2) is arranged facing the inclined partition (33). The rotary damping mechanism (2) and the feeding device that supplies material to the storage bin (1) are electrically connected to the PLC controller.

2. The mechanical contact biomass storage device according to claim 1, characterized in that, The rotating end of the rotary damping mechanism (2) and the upper end of the inclined partition (33) are located on the same plane.

3. The mechanical contact biomass storage device according to claim 1, characterized in that, The inclined material elevator (37) serves as the feeding device, and the inlet of the material elevator (37) is located above the side of the inclined partition (33) away from the rotating end of the rotary damping mechanism (2).

4. The mechanical contact biomass storage device according to claim 1, characterized in that, The PLC controller is set to a 3-second delay threshold as the signal holding threshold for the rotary damping mechanism (2).

5. The mechanical contact biomass storage device according to claim 1, characterized in that, The rotational damping mechanism (2) includes: The contact mechanism (4) of the rotating end includes a positioning rod (5), a sleeve (6) is rotatably sleeved on the positioning rod (5), the side wall of the sleeve (6) is constructed with a through mounting groove (7), a baffle (8) is movably installed in the mounting groove (7), one end of the baffle (8) extends out of the mounting groove (7) and is set vertically downward, and the other end of the baffle (8) is located in the sleeve (6) and a limiting block (9) is installed, the limiting block (9) abuts against the inner wall of the sleeve (6); The positioning rod (5) is provided with several through grooves (10) around its axis. The width of the through groove (10) is not less than the width of the limiting block (9), and the length of the through groove (10) matches the length of the baffle (8). An eccentric rotating mechanism (3) is installed on the side wall of the storage bin (1), with its eccentric end connected to the positioning rod (5). The eccentric rotating mechanism (3) extends into the material cavity (34).

6. A mechanical contact biomass storage device according to claim 5, characterized in that, The eccentric rotation mechanism (3) includes: The inner disc (19) has a coaxially constructed interlayer (20). The inner disc (19) has a coaxially constructed through first through groove (21). A baffle (22) is slidably embedded in the interlayer (20). The baffle (22) has a through hole (23) at an eccentric position relative to the first through groove (21). The power mechanism includes an outer disc (24), on which a limiting groove (25) is coaxially constructed. A rotating motor (18) is coaxially mounted on the side of the outer disc (24) opposite to the limiting groove (25). The rotating end of the rotating motor (18) extends coaxially into the limiting groove (25) and is coaxially mounted with a first gear (16). A second gear (17) is coaxially provided in the limiting groove (25) with the first gear (16). The second gear (17) meshes with the first gear (16). The inner wall of the limiting groove (25) is provided with a tooth structure, which meshes with the second gear (17). A connecting rod (31) is coaxially mounted on the side of the second gear (17) opposite to the rotating motor (18). An insertion groove (32) is constructed on the side of the connecting rod (31) facing away from the second gear (17). The connecting rod (31) passes through the through hole (23) and is coaxially connected to the positioning rod (5).

7. A mechanical contact biomass storage device according to claim 6, characterized in that, The bottom surface of the limiting groove (25) is provided with an annular groove (26) around its axis. The second gear (17) is coaxially mounted with a support rod (30) on the side facing away from the connecting rod (31). The end of the support rod (30) is slidably disposed in the annular groove (26).

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