Bulk material conveying adjustable self-buffering hopper and adjusting method

Abstract

According to the adjustable self-buffering hopper for bulk material conveying and the control method, the control mechanism adjusts the motion state of the material flow control mechanism so as to adapt to the parabolic trajectory and the parabolic blanking point of the material, it is ensured that the material falls onto the material flow control mechanism from the conveying belt, the trend of the material is controlled, and the material conveying efficiency is improved. The material flow control mechanism is arranged on the hopper body, it is ensured that materials at different speeds can stably fall into the material flow buffer area after passing through the material flow control mechanism and then fall onto a material receiving belt along the material flow guide area, meanwhile, buffer nets are arranged on the inner wall of the hopper body and the material flow control mechanism respectively so that part of the materials can be reserved on the material flow control mechanism, follow-up materials directly impact the reserved materials, and the material flow control mechanism is stable in material flow. Self-buffering of the materials is achieved, abrasion of the materials to the hopper is reduced, the materials are buffered again through the buffering net after falling to the material flow buffering area and the material flow guiding area, impact of the materials to the material receiving belt is reduced, the service life of the hopper is prolonged, and the reliability of the hopper is improved.

Description

Technical Field

[0001] This invention relates to the field of conveyor belt technology, and more specifically to an adjustable self-buffering hopper. Background Technology

[0002] Bulk material conveying systems are mainly used in mines, ports, tunnels, steel plants, power plants, cement plants and other places. Due to the influence of factors such as the particle size, hardness and conveying speed of the conveyed materials, the hopper becomes the weakest and most vulnerable part of the system.

[0003] Chinese Patent No. CN 213975442 U discloses a guide hopper for a conveyor line, comprising a guide hopper body and a first guide plate located inside it. A cover plate is slidably connected to the top of the guide hopper body. A support base is welded to the right side inside the guide hopper body. A spring is installed on the top of the support base. A second guide plate is installed on the top of the spring. A fixing block is installed at the bottom of the second guide plate. The left side of the second guide plate is hinged to the inside of the guide hopper body. This utility model, through the arrangement of the guide hopper body, the first guide plate, the cover plate, the support base, the spring, the second guide plate, the fixing block, the protrusion, the support block, and the motor, enables the guide hopper to have the advantages of preventing blockage and improving conveying efficiency.

[0004] However, existing hoppers are not very effective at preventing material blockage, and the material is prone to wear and tear on the hopper, reducing its service life and causing impact on the receiving belt.

[0005] Therefore, how to effectively improve the anti-clogging and buffering effect of the hopper on materials, increase the service life of the hopper, and reduce impact has become an urgent problem to be solved in this field. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a highly reliable adjustable self-buffered hopper for bulk material conveying that can effectively reduce material blockage and impact, as well as an adjustment method.

[0007] To achieve the above objectives, the present invention provides an adjustable self-buffered hopper for bulk material conveying, used in conjunction with a conveyor belt, an unloading roller, and a receiving belt. The hopper includes a hopper body, wherein the unloading roller is built into the hopper body. The invention is characterized by further including a control mechanism.

[0008] Along the height of the hopper body, there are a material flow control area, a material flow buffer area, and a material flow guide area. The material flow control area is equipped with a material flow control mechanism configured to move relative to the unloading roller to adapt to the parabolic trajectory and landing point of the material falling from the conveyor belt, and to receive the material, causing it to bounce back from the material flow control mechanism into the material flow buffer area. The material flow guide area and the material flow buffer area are distributed at an angle and extend towards the receiving belt. Buffer nets are respectively provided on the inner wall of the hopper body and on the material flow control mechanism.

[0009] The control mechanism is configured to adjust the motion state of the material flow control mechanism.

[0010] Furthermore, the hopper body is composed of a first hopper, a second hopper, and a third hopper connected together, and a mounting groove for cooperating with the unloading roller is provided between the first hopper and the second hopper.

[0011] Furthermore, the material flow control mechanism is located in the end region of the first hopper away from the unloading roller, and includes a push rod assembly, a crank adjusting rod, and a baffle that are slidably connected to the first hopper. One end of the crank adjusting rod cooperates with the push rod assembly, and the other end cooperates with the baffle.

[0012] Furthermore, the push rod assembly includes a connector, a telescopic rod, a cylinder body, and a cylinder body shaft. One end of the telescopic rod is slidably disposed in the cylinder body, and the other end extends out of the cylinder body to connect with the connector. The cylinder body shaft is disposed at both ends of the cylinder body and is used to cooperate with the first hopper.

[0013] Furthermore, the crank adjusting rod includes a crank and a positioning beam. The middle region of the crank is provided with a crank rotating hole for cooperating with the first hopper. The two ends of the crank are distributed at an included angle, one end is connected to the connecting head, and the other end is connected to the positioning beam through the positioning beam rotating shaft.

[0014] Furthermore, the baffle includes a baffle back plate extending to the second hopper. The first surface of the baffle back plate dynamically contacts and engages with the positioning beam, and a buffer net is provided on the second surface. The end of the baffle back plate is also provided with a baffle pivot for engaging with the first hopper.

[0015] Furthermore, the outer side of the first hopper's plate is provided with a push rod mounting seat for cooperating with the push rod assembly, the upper part of the side plate of the first hopper near the plate is provided with a baffle mounting seat for cooperating with the baffle, and the lower part is provided with a crank mounting seat for cooperating with the crank adjusting rod.

[0016] Furthermore, the baffle mounting base includes a first mounting base and a second mounting base that are relatively distributed, and the first mounting base and the second mounting base can be enclosed to form a plurality of mating grooves that are adapted to the rotating shaft of the baffle.

[0017] To achieve the above objectives, the present invention provides an adjustment method for an adjustable self-buffered hopper for bulk material conveying. Based on the adjustable self-buffered hopper for bulk material conveying, the adjustment method includes:

[0018] The control mechanism adjusts the motion state of the material flow control mechanism relative to the unloading drum to adapt to the parabolic trajectory and landing point of the material, so that the material falls from the conveyor belt to the material flow control mechanism, bounces back to the material flow buffer area, and then falls from the material flow guide area to the receiving belt.

[0019] The present invention provides an adjustable self-buffered hopper and control method for bulk material conveying. The control mechanism adjusts the motion state of the material flow control mechanism to adapt to the parabolic trajectory and landing point of the material, ensuring that the material falls from the conveyor belt onto the material flow control mechanism. It controls the direction of the material, ensuring that materials at different speeds can fall smoothly into the material flow buffer area after passing through the material flow control mechanism, and then fall onto the receiving belt along the material flow guide area. At the same time, buffer nets are provided on the inner wall of the hopper body and on the material flow control mechanism, so that some material is retained on the material flow control mechanism. Subsequent material directly impacts the retained material, realizing self-buffering of the material, thereby reducing the wear of the hopper. After the material falls into the material flow buffer area and the material flow guide area, it is buffered again by the buffer nets, reducing the impact of the material on the receiving belt, thereby improving the service life and reliability of the hopper. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 A schematic diagram of the overall structure of the adjustable self-buffered hopper for bulk material conveying provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the hopper body in this invention;

[0023] Figure 3 This is a schematic diagram of the push rod assembly in this invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first hopper in this invention;

[0025] Figure 5 This is a schematic diagram of the crank adjusting rod in this invention;

[0026] Figure 6 This is a schematic diagram of the baffle structure in this invention;

[0027] Figure 7 and Figure 8 This is a schematic diagram of the parabolic trajectory and parabolic landing point of the material in this invention.

[0028] Figure label:

[0029] Material flow control area A; Material flow buffer area B; Material flow guiding area C;

[0030] 1. Hopper body; 11. First hopper; 111. Side plate; 112. Second hopper; 12. Third hopper; 2. Conveyor belt; 3. Unloading roller; 14. Mounting groove; 15. Push rod mounting seat; 151. Cylinder shaft mating groove; 16. Crank mounting seat; 161. Baffle mounting seat; 17. First mounting seat; 171. Second mounting seat; 172. Baffle mating groove; 173.

[0031] Material flow control mechanism 4; push rod assembly 41; connector 411; telescopic rod 412; cylinder body 413; cylinder body shaft 414; crank adjusting rod 42; crank 421; crank rotating hole 4211; positioning beam 422; positioning beam shaft 423; baffle 43; baffle back plate 431; baffle shaft 432;

[0032] Buffer net 5. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0034] See Figure 1 The illustration shows an example of an adjustable self-buffered hopper for bulk material conveying provided by the present invention.

[0035] As shown in the figure, the adjustable self-buffered hopper for bulk material conveying in this example works in conjunction with the conveyor belt 2, the unloading roller 3 and the receiving belt, and includes the hopper body 1 and the control mechanism.

[0036] Along the height of the hopper body 1, there are three material flow control areas: A, a material flow buffer area, and a material flow guide area, C. A material flow control mechanism 4 is installed in the material flow control area A. The material flow control mechanism 4 is configured to move relative to the unloading roller 3 to adapt to the parabolic trajectory and landing point of the material, and to receive the material on the conveyor belt 2, so that the material rebounds from the material flow control mechanism 4 into the material flow buffer area B. The material flow guide area C is distributed at an angle to the material flow buffer area B and extends towards the receiving belt. Buffer nets 5 are respectively installed on the inner wall of the hopper body 1 and on the material flow control mechanism 4. The control mechanism is configured to adjust the movement state of the material flow control mechanism 4, thereby ensuring that materials at different speeds can pass through the material flow control mechanism 4, adjust their direction, and fall smoothly into the material flow buffer area B, then fall along the material flow guide area C onto the receiving belt, achieving buffering in the hopper, reducing wear on the hopper body 1 and impact on the receiving belt, and improving the reliability and service life of the hopper.

[0037] Combination Figure 1 and Figure 2 The hopper body 1 is composed of a first hopper 11, a second hopper 12 and a third hopper 13 connected together. The first hopper 11, the second hopper 12 and the third hopper 13 are distributed along the height direction of the hopper body 1. A mounting groove 14 is provided between the first hopper 11 and the second hopper 12 to cooperate with the unloading roller 3, so that the unloading roller 3 can be installed in the hopper body 1 through the mounting groove 14 and the material on the conveyor belt 2 falls into the hopper body 1.

[0038] Furthermore, the first hopper 11, the second hopper 12, and the third hopper 13 are respectively equipped with a material flow control area A, a material flow buffer area B, and a material flow guide area C, so that the material falls from the conveyor belt 2 onto the material flow control mechanism 4 on the material flow control area A, then passes through the material flow buffer area B and the material flow guide area C in sequence, and finally falls onto the receiving belt.

[0039] To reduce the wear of materials on the hopper body 1 and the impact on the receiving belt, buffer nets 5 are respectively provided on the inner walls of the first hopper 11, the second hopper 12 and the third hopper 13. When materials pass through the first hopper 11, the second hopper 12 and the third hopper 13, the impact force acts on the buffer nets 5, reducing the impact force. At the same time, some materials will remain in the mesh of the buffer nets 5, so that subsequent materials will directly impact the materials remaining in the buffer nets 5, thereby achieving self-buffering of materials, reducing the wear of materials on the hopper body 1 and improving the service life of the hopper body 1.

[0040] Preferably, the buffer net 5 is configured as an elastic mesh and is detachably connected to the hopper body 1, for example by screws, so as to facilitate the removal of the buffer net 5 to clean up the remaining material, and at the same time facilitate the maintenance and replacement of the buffer net 5. It also allows the material to rebound under the elastic force of the buffer net 5 when it falls on it.

[0041] Combination Figure 1 Furthermore, the conveyor belt 2 carries the material from the top of the unloading roller 3 to the hopper body 1 at the conveying speed. The material will fall in a parabolic trajectory under the action of the conveying speed and its own gravity, which will cause a large impact and wear on the hopper body 1 and the receiving belt. In order to reduce the impact force of the material and the wear of the hopper body 1, the first hopper 11 is equipped with a material flow control mechanism 4.

[0042] Combination Figure 1 and Figure 2 The material flow control mechanism 4 is located at the end of the first hopper far from the discharge roller 3, and forms a material flow control area A at this end. The material flow control mechanism 4 cooperates with the conveyor belt 2 and is configured to move relative to the discharge roller 3 to adjust the distribution distance and angle between the material flow control mechanism 4 and the discharge roller 3, thereby adapting to the parabolic trajectory and parabolic landing point of the material falling from the conveyor belt 2 onto the material flow control mechanism 4, ensuring that the material is buffered by the material flow control mechanism 4 before entering the hopper body 1.

[0043] Specifically, the material flow control mechanism 4 includes a push rod assembly 41, a crank adjusting rod 42, and a baffle 43. The push rod assembly 41, the crank adjusting rod 42, and the baffle 43 are slidably connected to the material flow control area A of the first hopper 11, and one end of the crank adjusting rod 42 cooperates with the push rod assembly 41, and the other end cooperates with the baffle 43, so that the push rod assembly 41, the crank adjusting rod 42, and the baffle 43 can rotate synchronously on the first hopper 11 to adjust the distribution distance and angle between the material flow control mechanism 4 and the unloading roller 3.

[0044] Combination Figure 3 Furthermore, the push rod assembly 41 includes a connector 411, a telescopic rod 412, a cylinder 413, and a cylinder shaft 414. One end of the telescopic rod 412 is slidably disposed in the cylinder 413 through a sliding component, and the other end extends out of the cylinder 413 and connects to the connector 411, so that the telescopic rod 412 can extend and retract in the cylinder 413 to drive the connector 411 to extend and retract synchronously. At the same time, the cylinder shaft 414 is disposed at both ends of the cylinder 413 to cooperate with the first hopper 11.

[0045] Combination Figure 2 and Figure 4Correspondingly, the outer side of the first hopper 11's plate 111 is provided with a push rod mounting seat 15 for cooperating with the push rod assembly 41. The push rod mounting seat 15 is located in the upper area of ​​the outer side of the plate 111. The push rod mounting seat 15 is provided with a cylinder shaft mating groove 151 adapted to the cylinder shaft 414, so that the cylinder shaft 414 is slidably disposed in the cylinder shaft mating groove 151 of the push rod mounting seat 15 and can rotate in the cylinder shaft mating groove 151, thereby driving the push rod assembly 41 to rotate synchronously with respect to the unloading roller 3 around the push rod mounting seat 15.

[0046] Combination Figure 5 Furthermore, the crank adjusting rod 42 includes a crank 421 and a positioning beam 422. The two ends of the crank 421 are distributed at an angle. One end is slidably connected to the connector 411 of the push rod assembly 41 via a pin, and the other end is connected to the positioning beam 422 via the positioning beam pivot 423. Preferably, the crank 421 and the positioning beam 422 are configured as a rigid integrated structure to ensure the stability of the connection between the crank 421 and the positioning beam 422.

[0047] In addition, the middle region of the crank 421 is provided with a crank rotation hole 4211 for cooperating with the first hopper 11.

[0048] Combination Figure 2 and Figure 4 In conjunction with this, the side plate 112 of the first hopper 11 is provided with a crank mounting seat 16 for cooperating with the crank adjusting rod 42 in the lower part of the area near the counter plate 11. The crank mounting seat 16 is provided with a crank mating groove 161, so that the pin can be inserted into the crank rotating hole 4211 and the crank mating groove 161, and the crank 421 and the crank mounting seat 16 can be slidably connected.

[0049] Thus, the push rod assembly 41 and the crank adjusting rod 42 are distributed at different horizontal positions in the material flow control area A, and are slidably set in the upper and lower areas of the material flow control area A, respectively. They are slidably connected by the connector 411. The telescopic rod 412 can generate a thrust or pull force on the crank 421 through the connector 411 when it extends and retracts in the cylinder 413. Since the two ends of the crank 421 are distributed at an angle, the thrust or pull force generated by the telescopic rod 412 on the crank 421 will drive the crank 421 to rotate synchronously around the crank mounting seat 16, and drive the positioning beam 422 to rotate synchronously around the crank mounting seat 16.

[0050] Combination Figure 6 Furthermore, the baffle 43 includes a baffle back plate 431, which extends from the first hopper 11 to the second hopper 12 to facilitate cooperation with the conveyor belt 2 and ensure that the material on the conveyor belt 2 can fall onto the baffle 43.

[0051] Meanwhile, the first surface of the baffle back plate 431 is in dynamic contact with the positioning beam 422 of the crank adjusting rod 42, and the second surface is provided with a buffer net 5. The end of the baffle back plate 431 is also provided with a baffle shaft 432 for cooperating with the first hopper 11.

[0052] Combination Figure 2 and Figure 4 Correspondingly, the side plate 112 of the first hopper 11 is provided with a baffle mounting seat 17 near the upper part of the opposite plate 111 for use with the baffle 43. The baffle mounting seat 17 is composed of a first mounting seat 171 and a second mounting seat 172 that are distributed opposite to each other. The first mounting seat 171 and the second mounting seat 172 can enclose a number of horizontally distributed baffle mating grooves 173 that are adapted to the baffle rotating shaft 432, so that the baffle rotating shaft 432 can be slidably disposed in the baffle mating grooves 173, thereby realizing the sliding connection and cooperation between the baffle 43 and the baffle mounting seat 17.

[0053] Meanwhile, the baffle shaft 432 cooperates with the baffle mating grooves 173 distributed at different horizontal positions, which can adjust the horizontal distribution position of the baffle 43 to adjust the distance between the baffle 43 and the unloading roller 3.

[0054] Combination Figure 1 Thus, the push rod assembly 41, the crank adjusting rod 42, and the baffle 43 are slidably disposed on the material flow control area A and are arranged in a triangular pattern. The crank adjusting rod 42 and the baffle 43 are slidably disposed in the upper and lower areas of the material flow control area A, respectively, and are dynamically contacted and engaged through the positioning beam 422. When the positioning beam 422 rotates around the crank mounting seat 16, it will generate a thrust on the baffle 43 to drive the baffle 43 to rotate synchronously around the baffle mounting seat 17, so as to adjust the distribution distance and angle between the baffle 43 and the unloading roller 3.

[0055] The material flow control mechanism 4 thus formed works in conjunction with the push rod assembly 41, the crank adjusting rod 42 and the baffle 43 to move relative to the unloading roller 3 on the first hopper 11, so as to adjust the distribution distance and angle between the baffle 43 and the unloading roller 3, and ensure that materials conveyed by the conveyor belt 2 at different conveying speeds can fall onto the baffle 43.

[0056] As an example, if the distribution distance and angle between the adjusting baffle 43 and the unloading roller 3 are large, the parabolic trajectory and the point of impact of the material cannot fall on the baffle 43 at the conveying speed of the conveyor belt 2. This will directly impact the material flow buffer area B on the second hopper 12, causing wear on the hopper body 1 and reducing its service life.

[0057] Combination Figure 1Therefore, the distribution distance and angle between the baffle 43 and the unloading roller 3 are adjusted. The push rod assembly 41 rotates around the push rod mounting seat 15. The distribution angle between the push rod assembly 41 and the crank adjusting rod 42 is finely adjusted to ensure the stability of the cooperation between the push rod assembly 41 and the crank adjusting rod 42. The telescopic rod 412 extends in the cylinder 413 and generates a thrust on the crank 421 through the connector 411 to drive the crank 421 to rotate synchronously around the crank mounting seat 16. This drives the positioning beam 422 to rotate synchronously around the crank mounting seat 16 towards the baffle 43, so that the positioning beam 422 generates a thrust on the baffle 43. This drives the baffle 43 to rotate synchronously around the baffle mounting seat 17 towards the unloading roller 3, thereby reducing the distribution distance and angle between the baffle 43 and the unloading roller 3. This ensures that the distribution distance and angle between the baffle 43 and the unloading roller 3 can be adapted to the parabolic trajectory and parabolic drop point of the material, so that the material on the conveyor belt 2 can fall onto the baffle 43 at the conveying speed.

[0058] At this time, the baffle 4 is adapted to the parabolic trajectory and parabolic landing point of the material. The material falls on the baffle 43, so that the material can bounce back to the material flow buffer area B on the second hopper 12 through the baffle 43. The baffle 43 achieves buffering and reduces the impact on the material flow buffer area B.

[0059] Furthermore, when the material falls onto the baffle 43, some of the material will remain in the buffer net 5 of the baffle 43. When subsequent material falls onto the baffle 43, it will directly impact the retained material, causing the retained material to generate a reaction force and attenuation effect on the subsequent material, thereby attenuating the impact energy of the material and achieving the purpose of buffering. This ensures that when the material rebounds from the baffle 43 to the material flow buffer area B, the impact force is small, thereby reducing the wear on the hopper body 1.

[0060] Combination Figure 1 In conjunction with this, the material flow buffer zone B is located at one end of the lower part of the second hopper 12 near the unloading roller 3, and is diagonally distributed with the material flow control zone A, so that the material rebounds from the baffle 43 of the material flow control zone A and smoothly turns and falls into the material flow buffer zone B.

[0061] Furthermore, since the inner wall of the second hopper 12 is also equipped with a buffer net 5, the material is buffered twice in the material flow buffer area B by the buffer net 5 before falling into the material flow guiding area C of the third hopper 13.

[0062] In conjunction with this, the third hopper 13 is distributed at an angle to the second hopper 12, and the material flow guiding area C is set at the end of the third hopper 13 and extends towards the receiving belt, so that the material can achieve a slight secondary rebound and rotation in the material flow buffer area B, fall into the third hopper 13, and after being buffered three times by the buffer net 5 of the third hopper 13, it falls onto the receiving belt along the material flow guiding area C.

[0063] Therefore, by adapting the material flow control mechanism 4 in the material flow control area A to the parabolic trajectory and landing point of the material, the direction of the material flow is controlled, so that the material is buffered once on the material flow control mechanism 4 and then bounces into the material flow buffer area B, where it undergoes a second buffering and bounce, and then falls into the material flow guide area C for a third buffering, so as to achieve multi-level buffering and smooth transition of the material, which can effectively improve the buffering effect, reduce the impact and wear of the material on the hopper body 1 and the receiving belt, and improve the service life of the hopper body 1.

[0064] Furthermore, in order to ensure a smooth transition of materials, in some embodiments, the bottom of the buffer net 5 in the first hopper 11, the second hopper 12 and the third hopper 13 is also provided with an elastic layer to ensure that the materials can smoothly rebound and transition in the material flow control area A, the material flow buffer area B and the material flow guide area C.

[0065] Furthermore, the hopper also includes a control mechanism, which is configured to adjust the motion state of the material flow control mechanism 4 according to the conveying speed of the conveyor belt 2, so as to ensure that the material flow control mechanism 4 can receive materials with different conveying speeds and meet the parabolic trajectory and parabolic landing point of the materials.

[0066] As an example, with the center of the unloading roller 3 as the origin, an XY coordinate system is established. The parabolic trajectory and landing point of the material falling from the top of the unloading roller 3 at the conveying speed v of the conveyor belt 2 can be calculated by the following formula:

[0067] Combination Figure 7 ,when At that time, X = vtcosβ - R sinβ,

[0068] Combination Figure 8 ,when At that time, X = vtcosθ + R sinθ at this time,

[0069] when At that time, X = vt,

[0070] In the formula, v is the conveying speed of conveyor belt 2, R is the radius of unloading roller 3, and g is the acceleration due to gravity of the material. This indicates the centrifugal acceleration of the material at the top of the unloading drum 3. The relative strength of gravitational acceleration g determines the direction of the initial velocity of the material being projected. β is the inclination angle of the conveyor belt 2, θ is the angle between the material and the center of the unloading roller 3 when the material leaves the unloading roller 3, X is the horizontal coordinate of the point where the material lands, and Y is the vertical coordinate of the point where the material lands.

[0071] In this way, the control mechanism can obtain the parabolic drop point coordinates (X,Y) of the material based on the conveying speed of the material on conveyor belt 2.

[0072] To ensure that the baffle 43 can meet the parabolic drop point of the material, the distance L of the baffle 43 from the Y-axis and the height H of the baffle 43 from the X-axis correspond to the horizontal coordinate X and the vertical coordinate Y of the parabolic drop point, respectively. Therefore, the control mechanism calculates the distribution angle α of the baffle 43 based on the distance L of the baffle 43 from the Y-axis and the height H of the baffle 43 from the X-axis, and then controls the movement state of the push rod assembly 41 accordingly to adjust the distribution spacing and angle of the baffle 43 to ensure that the baffle 43 meets the parabolic trajectory and parabolic drop point of the material.

[0073] Here, the control mechanism's control of the spacing and angle of the baffles 43 is a conventional technical means in this field, and will not be elaborated here. The control mechanism can be composed of an existing PLC.

[0074] In this way, the control mechanism can adjust the motion state of the material flow control mechanism 4 according to the conveying speed of the conveyor belt 2, so as to ensure that the material flow control mechanism 4 can receive materials with different conveying speeds, satisfy the parabolic trajectory and parabolic landing point of the material, so that the material can land on the baffle 43 and then bounce back to the material flow buffer area B, effectively reducing the impact force of the material.

[0075] This constitutes the adjustable self-buffered hopper for bulk material conveying provided by the present invention.

[0076] This invention also provides a control method for an adjustable self-buffered hopper for bulk material conveying. Based on the adjustable self-buffered hopper for bulk material conveying constructed by the above scheme, this control method includes:

[0077] Along the height direction of the hopper body 1, there are material flow control area A, material flow buffer area B, and material flow guide area C. A material flow control mechanism 4 is provided in the material flow control area A so that the control mechanism 4 can adjust the motion state of the material flow control mechanism 4 relative to the unloading roller 3 according to the conveying speed of the conveyor belt 2, so that the material falls from the conveyor belt 2 to the material flow control mechanism 4, and adjusts the parabolic trajectory and parabolic landing point of the material, so that the material rebounds from the material flow control mechanism 4 to the material flow buffer area B, and then falls from the material flow guide area C to the receiving belt.

[0078] The adjustable self-buffered hopper and control method for bulk material conveying provided by this invention adjusts the movement state of the material flow control mechanism 4 according to the conveying speed of the conveyor belt 2 to adapt to the parabolic trajectory and landing point of the material, ensuring that the material falls from the conveyor belt 2 onto the material flow control mechanism 4. This controls the direction of the material, ensuring that materials at different speeds can smoothly fall into the material flow buffer area B after passing through the material flow control mechanism 4, and then fall along the material flow guide area C onto the receiving belt. Simultaneously, buffer nets 5 are respectively provided on the inner wall of the hopper body 1 and on the material flow control mechanism 4, allowing some material to remain on the material flow control mechanism 4. Subsequent material directly impacts the remaining material, achieving self-buffering and reducing wear on the hopper. Furthermore, after falling into the material flow buffer area B and the material flow guide area C, the material is buffered again by the buffer nets 5, reducing the impact on the receiving belt and thus improving the service life and reliability of the hopper.

[0079] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable self-buffered hopper for bulk material conveying, used in conjunction with a conveyor belt, an unloading roller, and a receiving belt, comprising a hopper body, wherein the unloading roller is built into the hopper body, characterized in that, It also includes control mechanisms, Along the height of the hopper body, there are a material flow control area, a material flow buffer area, and a material flow guide area. The material flow control area is equipped with a material flow control mechanism configured to move relative to the unloading roller to adapt to the parabolic trajectory and landing point of the material falling from the conveyor belt, and to receive the material, causing it to bounce back from the material flow control mechanism into the material flow buffer area. The material flow guide area and the material flow buffer area are distributed at an angle and extend towards the receiving belt. Buffer nets are respectively provided on the inner wall of the hopper body and on the material flow control mechanism. The control mechanism is configured to adjust the motion state of the material flow control mechanism.

2. The adjustable self-buffered hopper for bulk material conveying according to claim 1, characterized in that, The hopper body is composed of a first hopper, a second hopper and a third hopper connected together, and a mounting groove for cooperating with the unloading roller is provided between the first hopper and the second hopper.

3. The adjustable self-buffered hopper for bulk material conveying according to claim 2, characterized in that, The material flow control mechanism is located in the end region of the first hopper away from the unloading roller, and includes a push rod assembly, a crank adjusting rod and a baffle that are slidably connected to the first hopper. One end of the crank adjusting rod cooperates with the push rod assembly and the other end cooperates with the baffle.

4. The adjustable self-buffered hopper for bulk material conveying according to claim 3, characterized in that, The push rod assembly includes a connector, a telescopic rod, a cylinder body, and a cylinder body shaft. One end of the telescopic rod is slidably disposed in the cylinder body, and the other end extends out of the cylinder body and connects to the connector. The cylinder body shaft is disposed at both ends of the cylinder body and is used to cooperate with the first hopper.

5. The adjustable self-buffered hopper for bulk material conveying according to claim 4, characterized in that, The crank adjusting rod includes a crank and a positioning beam. The middle area of ​​the crank is provided with a crank rotating hole for cooperating with the first hopper. The two ends of the crank are distributed at an included angle, one end is connected to the connector, and the other end is connected to the positioning beam through the positioning beam shaft.

6. The adjustable self-buffered hopper for bulk material conveying according to claim 5, characterized in that, The baffle includes a baffle back plate that extends to the second hopper. The first surface of the baffle back plate is in dynamic contact with the positioning beam, and a buffer net is provided on the second surface. The end of the baffle back plate is also provided with a baffle shaft for cooperating with the first hopper.

7. The adjustable self-buffered hopper for bulk material conveying according to claim 6, characterized in that, The outer side of the first hopper's plate is provided with a push rod mounting seat for cooperating with the push rod assembly. The upper part of the side plate of the first hopper near the plate is provided with a baffle mounting seat for cooperating with the baffle, and the lower part is provided with a crank mounting seat for cooperating with the crank adjusting rod.

8. The adjustable self-buffered hopper for bulk material conveying according to claim 7, characterized in that, The baffle mounting base includes a first mounting base and a second mounting base that are relatively distributed. The first mounting base and the second mounting base can be enclosed to form a plurality of mating grooves that are adapted to the rotating shaft of the baffle.

9. A method for adjusting an adjustable self-buffered hopper for bulk material conveying, characterized in that, Based on the adjustable self-buffered hopper for bulk material conveying according to any one of claims 1 to 8, the adjustment method includes: The control mechanism adjusts the motion state of the material flow control mechanism relative to the unloading drum to adapt to the parabolic trajectory and landing point of the material, so that the material falls from the conveyor belt to the material flow control mechanism, bounces back to the material flow buffer area, and then falls from the material flow guide area to the receiving belt.

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