Induced material lifter

Abstract

The invention provides an induction type material lifting device. The induction type material lifting device comprises a self-sliding pipe and a wind power material lifting pipe which are connected through an elbow to form a V shape. The bottom of the elbow is opened to form a discharge port, an openable bottom shell is hinged to the discharge port, an arc-shaped turning plate is movably connected into the bottom shell and used for guiding powder falling from the articulated chute to be turned upwards into the wind power lifting pipe, and an air inlet is formed between the turning plate and the inner wall, away from the articulated chute, of the bottom shell; a gas flow sensor is arranged in the wind power material lifting pipe and is used for detecting gas flow and feeding back a detection value to the controller; an adjusting mechanism controlled by the controller is arranged at the bottom of the elbow, is respectively connected with the bottom shell and the material turning plate, and is used for adjusting the opening degree of the air inlet and the opening and closing of the bottom shell. According to the induction type material lifting device, the problem of material leakage of the discharging opening in the normal powder conveying process can be avoided, powder loss and waste and air dust pollution caused by powder leakage are avoided, and the powder conveying stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of grain processing machinery, and in particular relates to an induction type feed lifter. Background Art

[0002] In wheat and corn mills, negative pressure pneumatic conveying pipes are commonly used to transport powder. The induction feeder is the connecting throat between the conveying pipe network and the powder discharge channel of each mill. Its performance plays a vital role in the transportation of powder.

[0003] At present, the induction feeder is composed of a V-shaped structure consisting of a downward sloping self-flowing pipe and a nearly vertical upward feeding pipe. The valve is hinged at the elbow where the two meet. Under normal working conditions, the valve is in a closed state under the negative pressure suction of the feeding pipe. When blockage occurs, the valve automatically opens under its own gravity to discharge the material due to the decrease in suction force, so the valve has the function of clearing the blockage. However, the disadvantage of the valve structure is that the powder flowing down in the self-flowing pipe is sometimes more and sometimes less, which will cause the negative pressure in the feeding pipe to change frequently and uncontrollably, so that the valve cannot maintain a stable closed state, resulting in a large amount of leakage, poor stability, and leakage will cause the loss and waste of powder and a large amount of air dust, affecting the production environment and not conducive to clean production. Therefore, the problem of valve powder leakage is a major problem in the current industry and needs to be solved urgently. Summary of the invention

[0004] The embodiment of the present invention provides an induction-type material lifter, aiming to solve the problem of powder leakage from a valve of the current induction-type material lifter and improve the stability and cleanliness of powder conveying.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an induction type material lifter is provided, comprising a self-sliding pipe and a wind-powered material lifter connected by an elbow to form a V-shape; the bottom of the elbow is opened to form a discharge port, the discharge port is hinged with an openable bottom shell, and an arc-shaped material flipping plate is movably connected in the bottom shell, the material flipping plate is used to guide the powder falling from the self-sliding pipe to flip upward into the wind-powered material lifter, and an air inlet is formed between the material flipping plate and the inner wall of the bottom shell away from the self-sliding pipe; An airflow sensor is provided in the pneumatic lifting pipe, which is used to detect the gas flow and feed back the detection value to the controller; an adjusting mechanism controlled by the controller is provided at the bottom of the elbow, and the adjusting mechanism is connected to the bottom shell and the flipping plate respectively; wherein, the controller controls the adjusting mechanism to drive the flipping plate to move based on the detection value to adjust the opening of the air inlet; when the opening of the air inlet is maximum and the detection value is lower than the lower limit of the set range, the adjusting mechanism drives the bottom shell to swing downward to open the discharge port.

[0006] In one possible implementation, the bottom shell includes two oppositely arranged side panels, a bottom plate connected between the ends of the two side panels near the self-sliding pipe, and an air guide plate connected between the ends of the two side panels near the wind-powered lifting pipe; wherein the air guide plate, the bottom plate and the upper boundaries of the two side panels together form an interface matching the discharge port, and an air avoidance area is formed between the lower end of the air guide plate and the lower end of the bottom plate; the flipping plate is slidably connected between the two side panels and abuts against the lower surface of the bottom plate, an air inlet channel is formed between the flipping plate and the air guide plate, and an air inlet is formed at the upper end of the air inlet channel.

[0007] In some embodiments, arc grooves are correspondingly opened on the two side plates, and sliding pins correspondingly inserted into the arc grooves are respectively provided on both sides of one end of the material turning plate facing the self-slide pipe; a support plate for supporting the middle part of the material turning plate is provided between the two side plates, and the two side plates are respectively provided with at least one roller for rolling the material turning plate downward.

[0008] Exemplarily, the adjustment mechanism includes: A driving box is fixedly connected to the bottom wall of one end of the elbow close to the self-sliding pipe, and ear plates are respectively provided on both sides of the end of the driving box facing the turning plate; Two rotating shafts are respectively fixedly disposed through two opposite side walls of the bottom shell and are coaxial with each other, and the two rotating shafts are respectively rotatably disposed through the two ear plates; A rotary drive member is disposed in the drive box and has an output end connected to the two rotating shafts respectively; A telescopic driving member is arranged in the driving box and has a connecting shaft at the output end; A connecting rod, one end of which is rotatably mounted on the connecting shaft, and the other end of which is hinged to the end of the turning plate facing the self-sliding pipe; Among them, the rotating drive member and the telescopic drive member are electrically connected to the controller respectively; when the telescopic drive member drives the flip plate to move to the maximum opening of the air inlet through the connecting rod, the connecting shaft and the rotating shaft form a coaxial state, and the rotating drive member is used to drive the two rotating shafts to rotate synchronously in the coaxial state to make the bottom shell swing open.

[0009] By way of example, the rotary drive element includes: Two worm wheels are rotatably connected to the two ear plates and are connected to the two rotating shafts respectively; Two worms are rotatably connected in the driving box and meshed with two worm wheels respectively. Synchronous rollers are correspondingly sleeved on the two worms, and the two synchronous rollers are connected through synchronous belt transmission. The first motor is arranged in the driving box and the output end of the first motor is connected to one of the worms.

[0010] In a possible implementation, the telescopic driving member includes: A second motor is disposed in the drive box and has an output end connected to a drive screw; The slide is connected to the driving box by sliding along the axial direction of the driving screw. The slide is provided with a screw sleeve, which is sleeved on the driving screw and threadedly matched with the driving screw. A connecting shaft is provided at one end of the slide facing the turning plate.

[0011] In some embodiments, a first gear is sleeved on the driving screw, a second gear is sleeved on one of the worms, and the second gear and the first gear are staggered along the axial direction of the driving screw; an operating rod is rotatably connected in the driving box, one end of the operating rod extends out of the driving box and is connected to the dial wheel, and the other end is sleeved with a third gear; wherein the operating rod has two states of axial movement along the driving screw so that the third gear engages with the first gear or the second gear respectively.

[0012] Exemplarily, a first shaft seat and a second shaft seat are spaced apart in the driving box, an operating rod is slidably passed through the first shaft seat and the second shaft seat, and a first limit platform and a second limit platform are respectively provided on both sides of the second shaft seat of the operating rod, an elastic member is sleeved on the operating rod, and the elastic member is located between the first shaft seat and the third gear; wherein, when the operating rod moves to the first limit platform and abuts against the second shaft seat under the action of the elastic member, the third gear meshes with the first gear; when the operating rod overcomes the action force of the elastic member and moves to the second limit platform and abuts against the second shaft seat, the third gear meshes with the second gear.

[0013] For example, an air hammer is provided at the connection position between the self-flowing pipe and the elbow, and the air hammer is electrically connected to the controller.

[0014] In some embodiments, the diameter of the self-sliding pipe gradually decreases from top to bottom, and the diameter of the wind-driven lifting pipe gradually increases from bottom to top.

[0015] The beneficial effect of the induction material lifter provided by the present invention is that compared with the prior art, the induction material lifter of the present invention has a discharge port for clearing blockages at the bottom of the elbow, an openable bottom shell is arranged on the discharge port, and an arc-shaped flipping plate is arranged in the bottom shell. The flipping plate can guide the powder flowing down from the chute to flip upward and enter the wind-powered material lifting pipe, thereby improving the smoothness of the wind-powered material lifting pipe in pumping the powder upward and reducing the probability of blockage. On this basis, an airflow sensor is arranged in the wind-powered material lifting pipe to monitor the gas flow inside it in real time and feed back the detection value to the controller. When the detection value of the airflow sensor is lower than the set interval, the controller can determine that blockage has occurred. At this time, the controller drives the bottom shell to swing downward to open the air by controlling the action of the regulating mechanism. The discharge port is opened, so that the clogged powder is discharged from the discharge port and then drives the bottom shell to swing upward to re-close the discharge port, thereby realizing automatic unblocking; when the detection value changes within the set range due to the change in the amount of powder flipped into the wind lifting pipe by the flipping plate, the controller controls the adjustment mechanism to drive the flipping plate to move based on the change in the detection value, thereby adjusting the opening of the air inlet, thereby ensuring the stability of the air flow in the wind lifting pipe, which can not only further reduce the probability of blockage, but also because the bottom shell is always in a state of closing the discharge port, it can avoid the problem of leakage of powder at the discharge port during normal powder transportation, which can not only improve the stability of powder transportation, but also avoid the waste of powder loss and air dust pollution caused by powder leakage, thereby improving production cleanliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of the induction type material lifter provided by an embodiment of the present invention when the bottom shell is in a closed state; Figure 2 A schematic diagram of the three-dimensional structure of the induction type material lifter provided by an embodiment of the present invention with the bottom shell in an open state; Figure 3 A schematic cross-sectional view of the induction type material lifter provided in an embodiment of the present invention when the bottom shell is in a closed state; Figure 4 A schematic cross-sectional view of the induction type material lifter provided by an embodiment of the present invention with the bottom shell in an open state; Figure 5 A schematic diagram of the three-dimensional structure of an elbow used in an embodiment of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the adjustment structure adopted in the embodiment of the present invention after the drive box is disassembled; Figure 7 Schematic diagram of the transmission structure of the adjustment structure (excluding the drive box) adopted in the embodiment of the present invention.

[0017] In the figure: 10, elbow; 11, discharge port; 12, bottom shell; 121, side plate; 1211, arc groove; 1212, roller; 122, bottom plate; 123, air guide plate; 124, sealing ring; 125, air inlet channel; 126, support plate; 1261, supporting wheel; 13, turning plate; 131, sliding pin; 14, air inlet; 20, self-sliding pipe; 30, wind-powered lifting pipe; 40, air flow sensor; 50, adjustment mechanism; 51, drive box; 511, ear plate; 512, operating lever; 5121, dial wheel; 5122, third gear; 5123, first limit table; 5124, second Limiting table; 5125, elastic member; 513, first shaft seat; 514, second shaft seat; 515, guide seat; 516, fourth gear; 52, rotating shaft; 53, rotating drive member; 531, worm gear; 532, worm; 5321, synchronous roller; 5322, synchronous belt; 5323, second gear; 533, first motor; 534, first transmission gear; 535, second transmission gear; 54, telescopic drive member; 541, connecting shaft; 542, second motor; 543, driving screw; 5431, first gear; 544, slide; 545, screw sleeve; 55, connecting rod; 60, air hammer. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0020] Please also read Figures 1 to 7The induction feeder provided by the present invention is now described. The induction feeder comprises a self-sliding pipe 20 and a wind-driven feeder pipe 30 connected by an elbow 10 to form a V-shaped structure; the bottom of the elbow 10 is open to form a discharge port 11, and the discharge port 11 is hinged with an openable bottom shell 12, and an arc-shaped flipping plate 13 is movably connected in the bottom shell 12. The flipping plate 13 is used to guide the powder falling from the self-sliding pipe 20 to flip upward into the wind-driven feeder pipe 30, and an air inlet 14 is formed between the flipping plate 13 and the inner wall of the bottom shell 12 away from the self-sliding pipe 20; an air flow sensor is provided in the wind-driven feeder pipe 30. 40, the air flow sensor 40 is used to detect the gas flow and feed back the detection value to the controller; the bottom of the elbow 10 is provided with an adjusting mechanism 50 controlled by the controller, and the adjusting mechanism 50 is respectively connected to the bottom shell 12 and the flip plate 13; wherein, the controller controls the adjusting mechanism 50 to drive the flip plate 13 to move based on the detection value to adjust the opening of the air inlet 14; when the opening of the air inlet 14 is maximum and the detection value is lower than the lower limit of the set interval, the adjusting mechanism 50 drives the bottom shell 12 to swing downward to open the discharge port 11.

[0021] It should be understood that in the present embodiment, the self-sliding pipe 20 is connected to the powder discharge channel of the mill, and the wind lifting pipe 30 is connected to the negative pressure pneumatic conveying network, thereby forming an upward suction force in the wind lifting pipe 30, wherein a part of the air intake of the wind lifting pipe 30 enters through the air inlet 14 between the end of the flipping plate 13 and the inner wall of the bottom shell 12, and this part of the air intake is mainly used for compensation, ensuring that the airflow in the wind lifting pipe 30 efficiently pumps the powder flipped up by the flipping plate 13 upward, thereby reducing the probability of powder clogging at the elbow 10, and another part of the air intake enters from the grinding chamber of the mill through the powder discharge channel and the self-sliding pipe 20 under the negative pressure suction, and this part of the air intake also has the function of cooling the grinding chamber and grinding roller, and assisting the powder to fall smoothly in the self-sliding pipe 20, thereby realizing the cooling of the grinding chamber and grinding roller, and improving the smoothness of the flow of materials in the self-sliding pipe 20, and reducing the probability of material blockage in the self-sliding pipe 20.

[0022] In this embodiment, the controller can specifically be a controller of the grinding mill control system, or it can be a controller separately set for the induction feeder. The controller receives the gas flow detection value detected by the airflow sensor 40 in real time. When the detection value fluctuates up and down in the set range, the controller adaptively controls the regulating mechanism 50 to drive the flipping plate 13 to move and adjust the opening of the air inlet 14 according to its floating amount; specifically, when the detection value increases within the set range, the controller controls the regulating mechanism 50 to drive the flipping plate 13 to move to reduce the air inlet 14, thereby increasing the negative pressure suction effect of the self-sliding pipe 20, thereby increasing the discharge speed of the discharge powder channel, and at the same time, reducing the air inlet 14 can reduce the external The boundary airflow enters the wind lifting pipe 30, thereby reducing energy consumption; when the detection value decreases within the set interval, the controller controls the adjustment mechanism 50 to drive the flip plate 13 to move in the direction of the air inlet 14, thereby increasing the air intake compensation amount of the air inlet 14 to the wind lifting pipe 30, thereby enabling the wind lifting pipe 30 to obtain sufficient negative pressure pumping airflow, thereby avoiding the wind lifting pipe 30 from being blocked inside the self-flow pipe 20 or the elbow 10 due to insufficient suction force. At the same time, after the air inlet 14 is increased, the negative pressure airflow obtained in the self-flow pipe 20 is correspondingly reduced, thereby reducing the suction effect of the negative pressure airflow on the discharge powder channel, thereby slowing down the powder discharge speed of the discharge powder channel, and further reducing the probability of blockage of the self-flow pipe 20. By adjusting the opening of the air inlet 14 based on the gas flow detection value in the induction feeder during the above process, the speed of the pneumatic feed pipe 30 pumping the powder upward and the speed of the material flowing downward from the chute 20 can be balanced, thereby reducing the probability of blockage. In addition, during the above process, the bottom shell 12 always keeps the discharge port 11 closed, thereby avoiding the problem of powder leakage.

[0023] On the basis of the above, when the air inlet 14 is adjusted to the maximum opening and the detection value of the air flow sensor 40 is still lower than the lower limit of the set interval, it can be determined that the self-flowing pipe 20 cannot form an effective air intake for the wind-powered lifting pipe 30. Therefore, it can be determined that blockage occurs inside the self-flowing pipe 20 or the elbow 10. At this time, the controller controls the regulating mechanism 50 to drive the bottom shell 12 to swing downward to open the discharge port 11, thereby enabling the powder blocked in the self-flowing pipe 20 or the elbow 10 to be discharged from the discharge port 11. Specifically, a time parameter can be assigned to the controller, that is, after the bottom shell 12 swings down to open the discharge port 11 for a set time, the regulating mechanism 50 is controlled to drive the bottom shell 12 to swing up and reset, thereby closing the discharge port 11 again and completing a clearing process. After a clearing process is completed, if the detection value returns to within the set interval, it indicates that the clearing is effective. If the detection value is still lower than the lower limit of the set interval after one clearing, the above action process is repeated for a second clearing until the detection value returns to within the set interval.

[0024] Compared with the prior art, the induction material lifter provided in this embodiment has a discharge port 11 for clearing blockages at the bottom of the elbow 10, an openable bottom shell 12 is provided on the discharge port 11, and an arc-shaped material turning plate 13 is provided in the bottom shell 12. The material turning plate 13 can guide the powder flowing down from the chute 20 to turn upward and enter the wind-powered material lifting pipe 30, thereby improving the smoothness of the wind-powered material lifting pipe 30 in pumping the powder upwards and reducing the probability of blockage. On this basis, by setting an air flow sensor 40 in the pneumatic lifting pipe 30 to monitor the gas flow inside in real time and feed back the detection value to the controller, when the detection value of the air flow sensor 40 is lower than the set interval, the controller can determine that blockage occurs. At this time, the controller drives the bottom shell 12 to swing downward to open the discharge port 11 by controlling the action of the regulating mechanism 50, so that the blocked powder is discharged from the discharge port 11 and then drives the bottom shell 12 to swing upward to close the discharge port 11 again, thereby realizing automatic clearing of blockage; When the detected value changes within the set range due to the change in the amount of powder turned into the pneumatic lifting pipe 30 by the turning plate 13, the controller controls the regulating mechanism 50 to drive the turning plate 13 to move based on the change in the detected value, thereby adjusting the opening of the air inlet 14, so that the speed of the pneumatic lifting pipe 30 pumping the powder upward and the speed of the powder flowing downward through the self-flowing pipe 20 tend to be balanced, thereby improving the stability and smoothness of the powder passing through the self-flowing pipe 20 and the pneumatic lifting pipe 30, which can not only further reduce the probability of blockage, but also because the bottom shell 12 is always in a state of closing the discharge port 11, the problem of leakage of the discharge port 11 during normal powder transportation can be avoided, which can not only improve the stability of powder transportation, but also avoid the waste of powder loss and air dust pollution caused by powder leakage, thereby improving production cleanliness.

[0025] In some embodiments, see Figures 3 to 5 The bottom shell 12 includes two oppositely arranged side plates 121, a bottom plate 122 connected between the ends of the two side plates 121 close to the self-sliding pipe 20, and an air guide plate 123 connected between the ends of the two side plates 121 close to the wind-powered lifting pipe 30; wherein, the air guide plate 123, the bottom plate 122 and the upper boundaries of the two side plates 121 together form an interface matching the discharge port 11, and a shelter area is formed between the lower end of the air guide plate 123 and the lower end of the bottom plate 122; the flipping plate 13 is slidably connected between the two side plates 121 and abuts against the lower surface of the bottom plate 122, and an air inlet channel 125 is formed between the flipping plate 13 and the air guide plate 123, and an air inlet port 14 is formed at the upper end of the air inlet channel 125.

[0026] It should be noted that the two side plates 121 are flush with the two side walls of the elbow 10, the wind guide plate 123 is flush with the pipe wall of the wind lifting pipe 30, and the bottom plate 122 is flush with the pipe wall of the self-sliding pipe 20, thereby ensuring that the interface and the discharge port 11 can be seamlessly connected when the bottom shell 12 is closed, thereby preventing powder from leaking out from between the interface and the discharge port 11. On this basis, a sealing ring 124 can be circumferentially arranged along the interface or the discharge port 11, and the sealing ring 124 is used to seal the docking position between the interface and the discharge port 11, so as to further reduce the probability of powder leakage. At the same time, the sealing ring 124 can also be used to form a guide limit to ensure that the interface and the discharge port 11 can be aligned when the bottom shell 12 is closed from an open state.

[0027] In the present embodiment, the air guide plate 123 is arc-shaped, and forms an air inlet channel 125 with the arc-shaped flipping plate 13 in the air avoidance area, wherein the air guide plate 123 is closer to a vertical setting than the flipping plate 13, thereby forming the air inlet channel 125 into a trumpet-shaped shape that gradually expands outward from top to bottom, thereby improving the smoothness of the external airflow entering the wind lifting pipe 30 through the air inlet channel 125, and at the same time, gradually narrowing in the direction of the airflow can increase the speed of the airflow passing through the air inlet 14, thereby increasing the force of the airflow at the air inlet 14 on the upward transportation of the powder in the wind lifting pipe 30, which is beneficial to reduce the probability of blockage.

[0028] Specifically, Figure 5 As shown, arc grooves 1211 are correspondingly opened on the two side plates 121, and sliding pins 131 correspondingly penetrated into the arc grooves 1211 are respectively provided on both sides of one end of the flipping plate 13 facing the self-slide pipe 20; a support plate 126 for supporting the middle part of the flipping plate 13 is provided between the two side plates 121, and the two side plates 121 are respectively provided with at least one roller 1212 for rolling the flipping plate 13 downward.

[0029] By utilizing the sliding pin 131 in the arc groove 1211 to cooperate with the support plate 126 and the upper and lower limits of the flipping plate 13 by rolling, the flipping plate 13 can be made to move stably along the trajectory of the arc groove 1211 driven by the adjustment structure. The function of the support plate 126 is to prevent the flipping plate 13 from swinging downward and causing the powder to leak out from the air avoidance area. At the same time, in order to reduce the adjustment movement resistance of the support plate 126 to the flipping plate 13, a plurality of supporting wheels 1261 can be provided on the support plate 126 to roll and support the lower surface of the flipping plate 13; the purpose of arranging rollers 1212 on the two side plates 121 to roll the flipping plate 13 downward is to form an upper limit on the flipping plate 13, thereby preventing the flipping plate 13 from swinging upward under the negative pressure suction of the wind lifting pipe 30 and affecting the passability of the powder in the elbow 10, thereby ensuring the stable and smooth passage of the powder through the elbow 10, thereby reducing the probability of blockage.

[0030] For some possible implementations, see Figures 5 to 7The adjusting mechanism 50 includes a driving box 51, two rotating shafts 52, a rotating driving member 53, a telescopic driving member 54 and a connecting rod 55; the driving box 51 is fixedly connected to the bottom wall of one end of the elbow 10 close to the self-sliding pipe 20, and ear plates 511 are respectively provided on both sides of the end of the driving box 51 facing the turning plate 13; the two rotating shafts 52 are respectively fixedly penetrated through the two opposite side walls of the bottom shell 12 and are coaxial with each other, and the two rotating shafts 52 are respectively rotatably penetrated through the two ear plates 511; the rotating driving member 53 is arranged in the driving box 51 and the output end is respectively connected to the two rotating shafts 52; the telescopic driving member 54 is arranged in the driving box 51 and a connecting shaft 541 is provided at the output end; one end of the connecting rod 55 is rotatably mounted on the connecting shaft 541, and the other end is hinged to one end of the flipping plate 13 facing the self-sliding pipe 20; wherein, the rotating driving member 53 and the telescopic driving member 54 are respectively electrically connected to the controller; when the telescopic driving member 54 drives the flipping plate 13 to move to the maximum opening of the air inlet 14 through the connecting rod 55, the connecting shaft 541 and the rotating shaft 52 form a coaxial state, and the rotating driving member 53 is used to drive the two rotating shafts 52 to rotate synchronously in the coaxial state to make the bottom shell 12 swing open.

[0031] The purpose of providing the drive box 51 here is, on the one hand, to serve as a connection basis for the rotating drive member 53 and the telescopic drive member 54, to reduce the number of fasteners provided on the wind-powered material lifting tube 30 as much as possible, thereby ensuring the integrity and smoothness of the inner wall of the wind-powered material lifting tube 30, thereby improving the smoothness of the powder being pumped upward in the wind-powered material lifting tube 30; on the other hand, it can avoid the rotating drive member 53 and the telescopic drive member 54 from being exposed except for their respective output ends, thereby improving the overall regularity of the appearance.

[0032] Since the flipping plate 13 is arranged in the elbow 10, it is necessary to receive the powder flowing down from the chute 20 and guide the powder to flip upward and enter the wind lifting pipe 30. Therefore, the movement trajectory of the flipping plate 13 is not a straight line when adjusting the opening of the air inlet 14. Here, a connecting rod 55 is arranged between the output end of the telescopic driving member 54 and the flipping plate 13, and the swinging freedom at both ends of the connecting rod 55 is utilized to enable the telescopic driving member 54 to transmit the linear motion of its output end to the flipping plate 13 to form a curved motion, thereby avoiding the problem of the flipping plate 13 getting stuck. On this basis, since the flipping plate 13 is installed on the bottom shell 12, when the bottom shell 12 is opened, the flipping plate 13 needs to swing down synchronously with the bottom shell 12, and The opening timing of the bottom shell 12 is when the air inlet 14 is opened to the maximum and the air flow detection value is still lower than the lower limit of the set range. Therefore, the movement limit position of the flip plate 13 can be used as a positioning, so that the adjusting mechanism 50 drives the flip plate 13 to move to the limit position with the maximum opening of the air inlet 14, and the connecting shaft 541 and the rotating shaft 52 form a coaxial state, so that the flip plate 13 can swing around the rotating shaft 52 along with the bottom shell 12, which can not only ensure the smoothness of the switching movement of the bottom shell 12, but also make the switching action of the bottom shell 12 and the opening adjustment of the air inlet 14 by the flip plate 13 logically match, thereby ensuring the corresponding sensitivity of the air inlet 14 opening adjustment and the bottom shell 12 switching movement based on the change of the air flow detection value.

[0033] As a specific implementation of the above-mentioned rotating driving member 53, please refer to Figure 6 and Figure 7 The rotating driving member 53 includes two worm wheels 531, two worms 532, and a first motor 533; wherein the two worm wheels 531 are respectively rotatably connected to the two ear plates 511 and are respectively connected to the two rotating shafts 52; the two worms 532 are respectively rotatably connected in the driving box 51 and are respectively meshed with the two worm wheels 531, and the two worms 532 are correspondingly sleeved with synchronous rollers 5321, and the two synchronous rollers 5321 are connected through a synchronous belt 5322; the first motor 533 is arranged in the driving box 51 and the output end is connected to one of the worms 532.

[0034] Here, the first motor 533 is a bidirectional motor controlled by a controller. When the first motor 533 rotates forward, the worm 532 directly connected to it rotates accordingly, and drives the other worm 532 to rotate synchronously through the transmission of the synchronous belt 5322 and the synchronous roller 5321. The two worms 532 respectively drive the two worm wheels 531 to rotate synchronously, and then drive the two rotating shafts 52 to rotate through the two worm wheels 531 to make the bottom shell 12 swing downward to open; when the first motor 533 rotates reversely, the rotation direction of the two worms 532 is reversed, thereby driving the two worm wheels 531 to rotate in the opposite direction and driving the bottom shell 12 to swing upward to close through the rotating shaft 52.

[0035] Specifically, the two worm gears 531 may be respectively mounted on the two rotating shafts 52, or may be Figure 7 As shown, in order to avoid interference of the worm gear 532 with the flipping and swinging of the bottom shell 12 based on spatial layout considerations, a first transmission gear 534 is sleeved on the rotating shaft 52, and a second transmission gear 535 meshing with the first transmission gear 534 is installed on the side wall or ear plate 511 of the driving box 51, and then the worm wheel 531 is coaxially sleeved on the gear shaft of the second transmission gear 535, so that the second transmission gear 535 can rotate with the worm wheel 531 and transmit the torque to the first transmission gear 534, and then the first transmission gear 534 drives the rotating shaft 52 to rotate to realize the switching action of the bottom shell 12, thereby obtaining more space around the rotating shaft 52 to avoid the switching interference problem of the bottom shell 12.

[0036] It should be noted that the worm wheel 531 and worm 532 that cooperate with each other are self-locking, that is, the worm 532 can drive the worm wheel 531 to rotate, but the worm wheel 531 cannot drive the worm 532 to rotate. The self-locking property can be used to ensure the stability of the closed state of the bottom shell 12, avoid the problem of separation and leakage between the interface and the discharge port 11 caused by the movement of the bottom shell 12, and also avoid the first motor 533 from being subjected to reverse force and affecting its life.

[0037] As a specific implementation of the telescopic drive member 54, please refer to Figures 5 to 7 The telescopic driving member 54 includes a second motor 542 and a slide 544; wherein the second motor 542 is arranged in the driving box 51 and the output end is connected to the driving screw 543; the slide 544 is connected to the driving box 51 along the axial sliding of the driving screw 543, and a screw sleeve 545 is provided on the slide 544, and the screw sleeve 545 is sleeved on the driving screw 543 and screwed with the driving screw 543; a connecting shaft 541 is provided at one end of the slide 544 facing the flipping plate 13.

[0038] The second motor 542 can specifically adopt a bidirectional motor controlled by a controller. When the second motor 542 drives the driving screw 543 to rotate forward, the screw sleeve 545 cooperating with the driving screw 543 drives the slide 544 to move in the direction close to the flipping plate 13, thereby pushing the flipping plate 13 to move to reduce the opening of the air inlet 14. This situation is suitable for when the detection value of the air flow sensor 40 increases within the set range. At this time, the amount of powder flowing down from the chute 20 is small. The flipping plate 13 can not only reduce the opening of the air inlet 14, but also increase the extension amount into the wind lifting pipe 30, thereby increasing the flipping height of the powder into the separation lifting pipe and reducing the probability of leakage; when the detection value of the air flow sensor 40 is within the set range When lowering, the second motor 542 drives the driving screw 543 to reverse, thereby driving the screw sleeve 545 to drive the slide 544 to move away from the flipping plate 13, and then pulls the flipping plate 13 to move to increase the opening of the air inlet 14. At this time, the amount of powder flowing down from the chute 20 is large. The increase in the opening of the air inlet 14 can ensure the speed at which the wind lifting pipe 30 pumps the powder upward, thereby reducing the probability of blockage. On this basis, the reverse movement of the flipping plate 13 shortens its extension length in the wind lifting pipe 30, thereby increasing the space for powder to pass through at the joint between the elbow 10 and the wind lifting pipe 30, thereby ensuring that the powder can smoothly pass through the elbow 10 into the wind lifting pipe 30, further reducing the probability of blockage.

[0039] It should be noted that the above-mentioned driving screw 543 and the sleeve 545 have a self-locking property based on the setting of the thread helix angle, that is, the driving screw 543 can drive the sleeve 545 to move but the sleeve 545 cannot drive the driving screw 543 to rotate. On the one hand, this can ensure the stability of the flipping plate 13 in the current position, and on the other hand, it can prevent the second motor 542 from being subjected to reverse force and affecting its life.

[0040] like Figure 6 and Figure 7 As shown, a guide seat 515 is provided in the drive box 51, and the slide 544 has two slide rods that are slidably inserted into the guide seat 515, and a screw sleeve 545 is provided between the two slide rods. The drive screw 543 passes through the screw sleeve 545 and extends between the two slide rods. Therefore, the overall movement stability of the slide 544 can be improved by utilizing the guidance of the two slide rods by the guide seat 515. At the same time, placing the drive screw 543 between the two slide rods can improve the compactness of the structure.

[0041] For some possible implementations, see Figure 6 and Figure 7A first gear 5431 is sleeved on the driving screw 543, and a second gear 5323 is sleeved on one of the worm gears 532, and the second gear 5323 and the first gear 5431 are staggered along the axial direction of the driving screw 543; an operating rod 512 is rotatably connected in the driving box 51, one end of the operating rod 512 extends out of the driving box 51 and is connected to the dial wheel 5121, and the other end is sleeved with a third gear 5122; wherein the operating rod 512 has two states of axial movement along the driving screw 543 to make the third gear 5122 mesh with the first gear 5431 or the second gear 5323 respectively.

[0042] In order to avoid the situation that the flipping plate 13 and the bottom shell 12 cannot move due to motor failure or power failure, the third gear 5122 can be meshed with the first gear 5431 by axially sliding the operating rod 512, so that the third gear 5122 drives the first gear 5431 to rotate by manually turning the dial wheel 5121, thereby driving the driving screw 543 to rotate through the first gear 5431, and then driving the slide 544 to move through the cooperation of the screw sleeve 545 and the driving screw 543, and the slide 544 drives the movement of the flipping plate 13 through the connecting rod 55 to realize the manual adjustment of the opening of the air inlet 14; When adjusted to the maximum opening, the connecting shaft 541 and the rotating shaft 52 form a coaxial state, and then the sliding operating lever 512 makes the third gear 5122 mesh with the second gear 5323. At this time, the rotating dial 5121 can drive the second gear 5323 to rotate through the third gear 5122, and then the worm 532 directly connected to the second gear 5323 rotates, and the other worm 532 rotates synchronously through the transmission of the synchronous belt 5322, thereby the two worm gears 531 can be driven to rotate respectively through the two worm gears 532, so that the two rotating shafts 52 drive the bottom shell 12 to swing open or close, thereby realizing manual operation of the bottom shell 12 switch.

[0043] It should be noted that, in order to meet the manual operation of the turning plate 13 and the bottom shell 12, the first motor 533 and the second motor 542 are both motors without brake or power-off self-locking function. Figure 7 Considering that the radial spacing between the first gear 5431 and the second gear 5323 may be too large, in this embodiment, a fourth gear 516 meshing with the second gear 5323 can be set in the drive box 51. The fourth gear 516 meshes with the third gear 5122 to achieve indirect driving of the second gear 5323 by the third gear 5122, thereby avoiding the third gear 5122 being too large in diameter and affecting the compactness of the overall structure.

[0044] Specifically, see Figure 6In this embodiment, a first shaft seat 513 and a second shaft seat 514 are arranged in the driving box 51 at intervals, and the operating rod 512 is slidably penetrated through the first shaft seat 513 and the second shaft seat 514, and the operating rod 512 is respectively provided with a first limit platform 5123 and a second limit platform 5124 on both sides of the second shaft seat 514, and an elastic member 5125 is sleeved on the operating rod 512, and the elastic member 5125 is located between the first shaft seat 513 and the third gear 5122; wherein, when the operating rod 512 moves to the first limit platform 5123 and the second shaft seat 514 abutting under the action of the elastic member 5125, the third gear 5122 meshes with the first gear 5431; when the operating rod 512 overcomes the action of the elastic member 5125 and moves to the second limit platform 5124 and the second shaft seat 514 abutting, the third gear 5122 meshes with the second gear 5323.

[0045] The abutment relationship between the first limit platform 5123 and the second limit platform 5124 and the second shaft seat 514 can limit the axial displacement of the operating rod 512, thereby ensuring that the third gear 5122 can be accurately aligned with the first gear 5431 or the second gear 5323 in the radial direction; on this basis, an elastic member 5125 such as a spring is used to be arranged between the third gear 5122 and the first shaft seat 513 to form an axial elastic thrust force on the operating rod 512, thereby enabling the operating rod 512 to remain in a state of abutment between the first limit platform 5123 and the second shaft seat 514 under normal circumstances. At this time, the third gear 5122 and the first gear 5431 are in a meshing state, thereby facilitating manual adjustment of the flipping plate 13 at any time.

[0046] It should be noted that, in this embodiment, Figures 1 to 4 As shown, an air hammer 60 is provided at the connection position of the self-flowing pipe 20 and the elbow 10, and the air hammer 60 is electrically connected to the controller. Specifically, since the connection position of the self-flowing pipe 20 and the elbow 10 is a key position for powder blockage, the air hammer 60 is set at this position. When the detection value of the air flow sensor 40 decreases within the set interval, and when the detection value of the air flow sensor 40 is lower than the lower limit of the set interval, the controller controls the air hammer 60 to be powered on, and the air hammer 60 beats the connection position of the self-flowing pipe 20 and the elbow 10 to make the powder in the self-flowing pipe 20 flow downward, thereby improving the automatic clearing effect.

[0047] For explanation, see Figure 3, the diameter of the self-sliding pipe 20 gradually decreases from top to bottom, and the diameter of the wind-powered lifting pipe 30 gradually increases from bottom to top. The powder gradually gathers in the process of flowing downward in the self-sliding pipe 20, and then turns upward into the wind-powered lifting pipe 30 under the guidance of the turning plate 13; at the same time, it gradually disperses in the upward process under the pumping action of the wind-powered lifting pipe 30, thereby improving the pumping efficiency and stability, and avoiding the situation where the powder is excessively concentrated in the wind-powered lifting pipe 30 and cannot go up and is blocked; in addition, the narrowing of the lower ends of both the self-sliding pipe 20 and the wind-powered lifting pipe 30 can obtain a higher airflow speed, thereby improving the smoothness and speed of the powder passing through the elbow 10, which is conducive to reducing the probability of blockage and improving the smoothness and stability of powder transportation.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Induction feeder, characterized in that: It comprises a V-shaped self-sliding pipe and a wind-powered material lifting pipe connected by an elbow; the bottom of the elbow is open to form a discharge port, the discharge port is hinged with an openable bottom shell, and an arc-shaped flipping plate is movably connected in the bottom shell, the flipping plate is used to guide the powder falling from the self-sliding pipe to flip upward into the wind-powered material lifting pipe, and an air inlet is formed between the flipping plate and the inner wall of the bottom shell away from the self-sliding pipe; An air flow sensor is provided in the pneumatic lifting pipe, and the air flow sensor is used to detect the gas flow and feed back the detection value to the controller; an adjustment mechanism controlled by the controller is provided at the bottom of the elbow, and the adjustment mechanism is connected to the bottom shell and the turning plate respectively; Among them, the controller controls the adjustment mechanism to drive the flip plate to move based on the detection value to adjust the opening of the air inlet; when the opening of the air inlet is maximum and the detection value is lower than the lower limit of the set range, the adjustment mechanism drives the bottom shell to swing downward to open the discharge port.

2. The induction feeder as claimed in claim 1, characterized in that: The bottom shell includes two oppositely arranged side panels, a bottom plate connected between the ends of the two side panels close to the self-sliding pipe, and an air guide plate connected between the ends of the two side panels close to the wind-powered lifting pipe; wherein the air guide plate, the bottom plate and the upper boundaries of the two side panels together form an interface matching the discharge port, and an air avoidance area is formed between the lower end of the air guide plate and the lower end of the bottom plate; the flipping plate is slidably connected between the two side panels and abuts against the lower surface of the bottom plate, an air inlet channel is formed between the flipping plate and the air guide plate, and the upper end of the air inlet channel forms the air inlet.

3. The induction feeder as claimed in claim 2, characterized in that: The two side plates are provided with arc grooves correspondingly, and the two sides of the end of the flipping plate facing the self-sliding pipe are respectively provided with sliding pins correspondingly passed through the arc grooves; a support plate for supporting the middle part of the flipping plate is provided between the two side plates, and the two side plates are respectively provided with at least one roller for rolling the flipping plate downward.

4. The induction feeder as claimed in claim 1, characterized in that: The regulating mechanism comprises: A driving box is fixedly connected to the bottom wall of one end of the elbow close to the self-sliding pipe, and ear plates are respectively provided on both sides of the end of the driving box facing the turning plate; Two rotating shafts are respectively fixedly disposed through two opposite side walls of the bottom shell and are coaxial with each other, and the two rotating shafts are respectively rotatably disposed through the two ear plates; A rotary drive member, which is disposed in the drive box and has an output end connected to the two rotating shafts respectively; A telescopic driving member, which is arranged in the driving box and has a connecting shaft at its output end; A connecting rod, one end of which is rotatably sleeved on the connecting shaft, and the other end of which is hinged to one end of the turning plate facing the self-sliding pipe; Among them, the rotating drive member and the telescopic drive member are electrically connected to the controller respectively; when the telescopic drive member drives the flip plate to move to the maximum opening of the air inlet through the connecting rod, the connecting shaft and the rotating shaft form a coaxial state, and the rotating drive member is used to drive the two rotating shafts to rotate synchronously in the coaxial state to make the bottom shell swing open.

5. The induction feeder as claimed in claim 4, characterized in that: The rotary drive member comprises: Two worm gears are rotatably connected to the two ear plates and are connected to the two rotating shafts respectively; Two worms are rotatably connected in the driving box and meshed with the two worm wheels respectively. Synchronous rollers are correspondingly sleeved on the two worms. The two synchronous rollers are connected through synchronous belt transmission. The first motor is arranged in the driving box and the output end of the first motor is connected to one of the worms.

6. The induction feeder as claimed in claim 5, characterized in that: The telescopic drive member comprises: A second motor is disposed in the drive box and has an output end connected to a drive screw; A slide is slidably connected to the drive box along the axial direction of the drive screw, and a screw sleeve is provided on the slide. The screw sleeve is sleeved on the drive screw and threadedly engaged with the drive screw. The connecting shaft is provided at one end of the slide facing the flipping plate.

7. The induction feeder as claimed in claim 6, characterized in that: The driving screw is sleeved with a first gear, and one of the worms is sleeved with a second gear, and the second gear and the first gear are staggered along the axial direction of the driving screw; an operating rod is rotatably connected in the driving box, one end of the operating rod extends out of the driving box and is connected to the dial wheel, and the other end is sleeved with a third gear; wherein the operating rod has two states of axial movement along the driving screw to make the third gear mesh with the first gear or the second gear respectively.

8. The induction feeder as claimed in claim 7, characterized in that: A first shaft seat and a second shaft seat are arranged at intervals in the driving box, the operating rod is slidably penetrated through the first shaft seat and the second shaft seat, and the operating rod is respectively provided with a first limit platform and a second limit platform on both sides of the second shaft seat, an elastic member is sleeved on the operating rod, and the elastic member is located between the first shaft seat and the third gear; wherein, when the operating rod moves to the point where the first limit platform abuts against the second shaft seat under the action of the elastic member, the third gear meshes with the first gear; when the operating rod overcomes the action force of the elastic member and moves to the point where the second limit platform abuts against the second shaft seat, the third gear meshes with the second gear.

9. The induction feeder as claimed in claim 1, characterized in that: An air hammer is provided on the connecting portion between the self-sliding pipe and the elbow, and the air hammer is electrically connected to the controller.

10. The induction feeder according to any one of claims 1 to 9, characterized in that: The diameter of the self-sliding pipe gradually decreases from top to bottom, and the diameter of the wind-powered lifting pipe gradually increases from bottom to top.

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