Induced material lifter

Abstract

The application provides an induced material lifting device, which comprises a self-feeding pipe and a wind material lifting pipe which are connected by a bend to form a V shape, a bottom of the bend is open to form a discharge port, the discharge port is hinged with an openable bottom shell, an arc-shaped material turning plate is movably connected in the bottom shell, the material turning plate is used for guiding the powder falling from the self-feeding pipe to turn upward into the wind material lifting pipe, and an air inlet is formed between the material turning plate and an inner wall of the bottom shell away from the self-feeding pipe, an airflow sensor is arranged in the wind material lifting pipe, the airflow sensor is used for detecting the airflow and feeding the detection value to a controller, and an adjusting mechanism controlled by the controller is arranged at the bottom of the bend, the adjusting mechanism is connected with the bottom shell and the material turning plate respectively and is used for adjusting the opening degree of the air inlet and the opening and closing of the bottom shell. The induced material lifting device can avoid the problem of material leakage of the discharge port in the normal powder conveying process, avoid the waste of powder loss and the air dust pollution caused by powder leakage, and improve the stability of powder conveying.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of grain processing machinery, and particularly relates to an induced material lifter. BACKGROUND

[0002] In a wheat and corn flour processing plant, a negative pressure air conveying pipe network is generally used for powder transmission, and the induced material lifter is a connecting throat between the conveying pipe network and the powder outlet of each flour mill. The performance of the induced material lifter plays a crucial role in powder transmission.

[0003] At present, the induced material lifter is composed of a V-shaped structure of a downwardly inclined self-sloping pipe and a nearly vertically upward material lifter pipe. A hinge hinged valve is arranged at the bend part where the two pipes are connected. In the normal working state, the valve is in a closed state under the negative pressure suction force of the material lifter pipe. When the material is blocked, the valve is automatically opened to discharge the material outward under the action of its own gravity due to the decrease of the suction force. Therefore, the valve has the function of clearing the blockage. However, the valve structure has the disadvantage that the amount of powder flowing down in the self-sloping pipe varies, which causes the negative pressure in the material lifter pipe to change uncontrollably frequently, so that the valve cannot maintain a stable closed state, thereby causing a large amount of material leakage. The stability is poor, and the material leakage causes waste of powder and a large amount of air dust, which affects the production environment and is not conducive to clean production. Therefore, the powder leakage problem of the valve is a big problem in the industry, which needs to be solved urgently. SUMMARY

[0004] The embodiment of the present application provides an induced material lifter, which aims to solve the powder leakage problem of the valve of the current induced material lifter and improve the stability and cleanliness of powder transmission.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: an induced material lifter is provided, which comprises a self-sloping pipe and a wind force material lifter pipe connected by a bend to form a V shape. A discharge port is formed at the bottom of the bend, and a bottom shell which can be opened is hinged to the discharge port. An arc-shaped material turning plate is movably connected in the bottom shell. The material turning plate is used to guide the powder falling from the self-sloping pipe to turn upward into the wind force material lifter pipe, and an air inlet is formed between the material turning plate and the inner wall of the bottom shell away from the self-sloping pipe.

[0006] An air flow sensor is arranged in the wind force material lifter pipe, which is used to detect the gas flow and feed back the detection value to a controller. An adjusting mechanism controlled by the controller is arranged at the bottom of the bend, and the adjusting mechanism is connected with the bottom shell and the material turning plate respectively. The controller controls the adjusting mechanism to drive the material turning plate to move to adjust the opening degree of the air inlet based on the detection value. When the opening degree of the air inlet is the largest and the detection value is lower than the lower limit value of the set interval, the adjusting mechanism drives the bottom shell to swing downward to open the discharge port.

[0007] In a possible implementation, the bottom shell comprises two oppositely arranged side plates, a bottom plate connected between the two side plates near the end of the self-unloading pipe, and a wind deflector connected between the two side plates near the end of the wind-assisted material lifting pipe; the upper boundaries of the wind deflector, the bottom plate, and the two side plates jointly form an interface matching the discharge port, and an empty area is formed between the lower end of the wind deflector and the lower end of the bottom plate; the turnover plate is slidingly connected between the two side plates and abuts against the lower surface of the bottom plate, and an air inlet passage is formed between the turnover plate and the wind deflector, and the upper end of the air inlet passage forms an air inlet.

[0008] In some embodiments, arc-shaped grooves are formed in the two side plates, and sliding pins corresponding to the arc-shaped grooves are arranged on the two sides of the end of the turnover plate facing the self-unloading pipe; a supporting plate for supporting the middle part of the turnover plate is arranged between the two side plates, and at least one roller for rolling downward on the turnover plate is arranged on each of the two side plates.

[0009] For example, the adjusting mechanism comprises:

[0010] A driving box is fixedly connected to the bottom wall of the elbow near the end of the self-unloading pipe, and the driving box is provided with an ear plate on each side of the end portion facing the turnover plate;

[0011] Two rotating shafts are fixedly and coaxially arranged in the two opposite side walls of the bottom shell, and the two rotating shafts are rotatably arranged in the two ear plates, respectively;

[0012] A rotating driving member is arranged in the driving box and has an output end connected to the two rotating shafts, respectively;

[0013] An extension driving member is arranged in the driving box and has an output end provided with a connecting shaft;

[0014] A connecting rod is rotatably sleeved on the connecting shaft at one end and hingedly connected to the end of the turnover plate facing the self-unloading pipe at the other end;

[0015] The rotating driving member and the extension driving member are electrically connected to the controller, respectively; when the extension driving member drives the turnover plate to move to the maximum opening degree of the air inlet, the connecting shaft and the rotating shaft are coaxial, and the rotating driving member is used to drive the two rotating shafts to rotate synchronously in the coaxial state to make the bottom shell swing open.

[0016] For example, the rotating driving member comprises:

[0017] Two worm gears are rotatably connected to the two ear plates and connected to the two rotating shafts, respectively;

[0018] Two worm gears are rotatably connected to the driving box and meshingly connected to the two worm gears, respectively, and two synchronous rollers are correspondingly sleeved on the two worm gears, and the two synchronous rollers are drivingly connected through a synchronous belt;

[0019] A first motor is arranged in the driving box and has an output end connected to one of the worm gears.

[0020] In a possible implementation, the telescopic drive comprises:

[0021] a second motor arranged in the drive box and having a drive screw connected to an output end thereof;

[0022] a sliding carriage connected to the drive box in an axial direction of the drive screw, the sliding carriage being provided with a screw sleeve sleeved on the drive screw and in screwing engagement with the drive screw, and the sliding carriage being provided with a connecting shaft at an end thereof facing the material turning plate.

[0023] In some embodiments, the drive screw is sleeved with a first gear, one of the worms is sleeved with a second gear, the second gear is distributed in axial misalignment with the first gear along the drive screw, the drive box is rotationally connected with an operating rod, one end of the operating rod extends out of the drive box and is connected with a ratchet wheel, and the other end of the operating rod is sleeved with a third gear; the operating rod has two states of axial movement along the drive screw to enable the third gear to mesh with the first gear or the second gear.

[0024] For example, the drive box is provided with a first shaft seat and a second shaft seat at intervals, the operating rod is slidably arranged through the first shaft seat and the second shaft seat, the operating rod is provided with a first limiting platform and a second limiting platform on two sides of the second shaft seat, the operating rod is sleeved with an elastic member, and the elastic member is located between the first shaft seat and the third gear; when the operating rod is moved to abut against the second shaft seat at the first limiting platform under the action of the elastic member, the third gear meshes with the first gear; when the operating rod is moved to abut against the second shaft seat at the second limiting platform against the action force of the elastic member, the third gear meshes with the second gear.

[0025] For example, a pneumatic hammer is arranged at a joint between the self-feeding pipe and the elbow, and the pneumatic hammer is electrically connected with the controller.

[0026] In some embodiments, the pipe diameter of the self-feeding pipe gradually decreases from top to bottom, and the pipe diameter of the wind force material lifting pipe gradually increases from bottom to top.

[0027] The beneficial effect of the induced material lifter provided by the present application is that, compared with the prior art, the induced material lifter of the present application opens a unblocking discharge port at the bottom of the elbow, sets an openable bottom shell on the discharge port, and sets an arc-shaped material turning plate in the bottom shell, so that the powder flowing down from the self-sliding pipe can be guided to turn up into the wind-powered material lifting pipe by the material turning plate, thereby improving the flow of the powder upwardly sucked by the wind-powered material lifting pipe and reducing the probability of material blocking; on this basis, by setting an airflow sensor in the wind-powered material lifting pipe to monitor the airflow in the wind-powered material lifting pipe in real time and feed 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 material blocking occurs, at this time, the controller drives the bottom shell to swing downward to open the discharge port by controlling the adjusting mechanism, so that the blocked powder is discharged from the discharge port, and then the bottom shell is driven to swing upward to close the discharge port again, thereby realizing automatic unblocking; when the detection value changes within the set interval due to the change of the amount of powder turned into the wind-powered material lifting pipe by the material turning plate, the controller controls the adjusting mechanism to drive the material turning plate to move based on the change of the detection value, thereby adjusting the opening degree of the air inlet, so as to ensure the stability of the airflow in the wind-powered material lifting pipe, which not only can further reduce the probability of material blocking, but also can avoid the problem of material leakage from the discharge port in the normal conveying process of the powder, thereby improving the stability of the powder conveying, and avoiding the waste of powder and the air dust pollution caused by the leakage of the powder, thereby improving the production cleanliness. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The three-dimensional structure schematic diagram of the induced material lifter provided by the embodiment of the present application in the closed state of the bottom shell;

[0029] Figure 2 The three-dimensional structure schematic diagram of the induced material lifter provided by the embodiment of the present application in the open state of the bottom shell;

[0030] Figure 3 The sectional structure schematic diagram of the induced material lifter provided by the embodiment of the present application in the closed state of the bottom shell;

[0031] Figure 4 The sectional structure schematic diagram of the induced material lifter provided by the embodiment of the present application in the open state of the bottom shell;

[0032] Figure 5 The three-dimensional structure schematic diagram of the elbow adopted by the embodiment of the present application;

[0033] Figure 6 The three-dimensional structure schematic diagram of the adjusting structure after the driving box is disassembled in the embodiment of the present application;

[0034] Figure 7 The transmission structure schematic diagram of the adjusting structure (not including the driving box) adopted by the embodiment of the present application.

[0035] In the figure: 10, elbow; 11, discharge port; 12, bottom shell; 121, side plate; 1211, arc-shaped groove; 1212, roller; 122, bottom plate; 123, air deflector; 124, sealing ring; 125, air inlet channel; 126, supporting plate; 1261, supporting wheel; 13, turning plate; 131, sliding pin; 14, air inlet; 20, self-feeding pipe; 30, wind-powered material lifting pipe; 40, air flow sensor; 50, adjusting mechanism; 51, driving box; 511, lug plate; 512, operating lever; 5121, handle; 5122, third gear; 5123, first limiting platform; 5124, second limiting platform; 5125, elastic member; 513, first shaft seat; 514, second shaft seat; 515, guide seat; 516, fourth gear; 52, rotating shaft; 53, rotating driving member; 531, worm wheel; 532, worm; 5321, synchronous roller; 5322, synchronous belt; 5323, second gear; 533, first motor; 534, first transmission gear; 535, second transmission gear; 54, telescopic driving member; 541, connecting shaft; 542, second motor; 543, driving screw; 5431, first gear; 544, sliding bracket; 545, screw sleeve; 55, connecting rod; 60, air hammer. DETAILED DESCRIPTION

[0036] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0037] It should be noted that when an element is referred to as being "disposed on", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or indirectly on, connected or coupled to the other element. It should be understood that the terms "on", "under", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.

[0038] Please refer to Figures 1 to 7The application provides an induced material lifting device. The induced material lifting device comprises a V-shaped self-sliding pipe 20 and a wind material lifting pipe 30 connected by an elbow 10; the bottom of the elbow 10 is open to form a discharge port 11, the discharge port 11 is hinged with an openable bottom shell 12, the bottom shell 12 is movably connected with an arc-shaped material turning plate 13, the material turning plate 13 is used for guiding the powder falling from the self-sliding pipe 20 to turn upwards into the wind material lifting pipe 30, and the material turning plate 13 and the inner wall of the bottom shell 12 away from the self-sliding pipe 20 form an air inlet 14; the wind material lifting pipe 30 is provided with an airflow sensor 40, the airflow sensor 40 is used for detecting the airflow and feeding the detection value to a controller; the bottom of the elbow 10 is provided with an adjusting mechanism 50 controlled by the controller, the adjusting mechanism 50 is connected with the bottom shell 12 and the material turning plate 13 respectively; wherein the controller controls the adjusting mechanism 50 to drive the material turning plate 13 to move to adjust the opening degree of the air inlet 14 based on the detection value; when the opening degree of the air inlet 14 is the largest and the detection value is lower than the lower limit value of the set interval, the adjusting mechanism 50 drives the bottom shell 12 to swing downward to open the discharge port 11.

[0039] It should be understood that in the embodiment, the self-sliding pipe 20 is connected with the powder outlet of the mill, and the wind material lifting pipe 30 is connected with the negative pressure pneumatic conveying pipe network, so that an upward suction force is formed in the wind material lifting pipe 30, wherein part of the air inlet of the wind material lifting pipe 30 enters through the air inlet 14 between the end of the material turning plate 13 and the inner wall of the bottom shell 12, and the part of the air inlet mainly plays a compensation role to ensure that the airflow in the wind material lifting pipe 30 efficiently sucks and conveys the powder turned up by the material turning plate 13, reduces the probability of powder blocking at the elbow 10, another part of the air inlet enters through the self-sliding pipe 20 from the mill cavity through the powder outlet under the negative pressure suction, and the part of the air inlet also has the effects of cooling the mill cavity and the mill roller and assisting the smooth falling of the powder in the self-sliding pipe 20, so as to realize the cooling of the mill cavity and the mill roller, improve the smoothness of the material flowing in the self-sliding pipe 20, and reduce the probability of blocking the self-sliding pipe 20.

[0040] In the embodiment, the controller can be a controller of a mill control system or a controller separately arranged for the induced material lifter. The controller receives the gas flow detection value detected by the airflow sensor 40 in real time. When the detection value fluctuates above and below the set interval, the controller adaptively controls the adjusting mechanism 50 to drive the turning plate 13 to move to adjust the opening degree of the air inlet 14 according to the fluctuation amount. Specifically, when the detection value increases within the set interval, the controller controls the adjusting mechanism 50 to drive the turning plate 13 to move to adjust the air inlet 14 to be smaller, so that the negative pressure suction force of the self-slip pipe 20 increases, thereby increasing the discharging speed of the discharging powder channel. At the same time, adjusting the air inlet 14 to be smaller can reduce the external airflow entering the wind power material lifting pipe 30, thereby reducing the energy consumption. When the detection value decreases within the set interval, the controller controls the adjusting mechanism 50 to drive the turning plate 13 to move to adjust the air inlet 14 to be larger, thereby increasing the air compensation amount of the air inlet 14 to the wind power material lifting pipe 30. Thus, the wind power material lifting pipe 30 can obtain sufficient negative pressure suction airflow, thereby avoiding the internal blockage of the self-slip pipe 20 or the elbow 10 due to insufficient suction force. At the same time, after the air inlet 14 is adjusted to be larger, the negative pressure airflow obtained in the self-slip pipe 20 decreases accordingly, thereby reducing the suction force of the negative pressure airflow on the discharging powder channel, slowing down the discharging speed of the discharging powder channel, and further reducing the probability of blockage of the self-slip pipe 20. Through the above process of adjusting the opening degree of the air inlet 14 based on the gas flow detection value in the induced material lifter, the upward suction speed of the wind power material lifting pipe 30 and the downward material flowing speed of the self-slip pipe 20 can be balanced, thereby reducing the blockage probability. Moreover, in the above process, the bottom shell 12 always maintains the closed state of the discharging port 11, thereby avoiding the problem of powder leakage.

[0041] On the basis of the above, when the detection value of the airflow sensor 40 is still lower than the lower limit value of the set interval after the air inlet 14 is adjusted to the maximum opening degree, it can be determined that the self-slip pipe 20 cannot form effective air intake to the wind power material lifting pipe 30, and it can be determined that the internal blockage of the self-slip pipe 20 or the elbow 10 occurs. At this time, the controller controls the adjusting mechanism 50 to drive the bottom shell 12 to swing downward to open the discharging port 11, thereby discharging the blocked powder in the self-slip pipe 20 or the elbow 10 from the discharging port 11. Specifically, a time parameter can be assigned to the controller, that is, after the bottom shell 12 swings downward to open the discharging port 11 for a set time, the adjusting mechanism 50 drives the bottom shell 12 to swing upward to reset, thereby closing the discharging port 11 again to complete a cleaning process. After the cleaning process is completed, if the detection value returns to the set interval, it indicates that the cleaning is effective. If the detection value is still lower than the lower limit value of the set interval after the cleaning process, the above process is repeated for secondary cleaning until the detection value returns to the set interval.

[0042] Compared with the prior art, the induced material lifting device provided by the embodiment has the following advantages: a discharge port 11 for unblocking is arranged at the bottom of the elbow 10, an openable bottom shell 12 is arranged on the discharge port 11, and an arc-shaped material turning plate 13 is arranged in the bottom shell 12, so that the powder flowing down from the self-sliding pipe 20 can be guided to turn upward into the wind power material lifting pipe 30 by the material turning plate 13, thereby improving the flow smoothness of the powder upwardly sucked and sent by the wind power material lifting pipe 30 and reducing the probability of blocking;

[0043] On this basis, the airflow sensor 40 is arranged in the wind power material lifting pipe 30 to monitor the airflow in the wind power material lifting pipe 30 in real time and feed the detection value to the controller, so that the controller can determine that the powder is blocked when the detection value of the airflow sensor 40 is lower than the set interval. At this time, the controller drives the bottom shell 12 to swing downward to open the discharge port 11 by controlling the adjusting mechanism 50, so that the blocked powder is discharged from the discharge port 11, and then the bottom shell 12 is driven to swing upward to close the discharge port 11 again, thereby realizing automatic unblocking.

[0044] When the detection value changes within the set interval due to the change of the amount of powder turned into the wind power material lifting pipe 30 by the material turning plate 13, the controller controls the adjusting mechanism 50 to drive the material turning plate 13 to move based on the change of the detection value, so as to adjust the opening degree of the air inlet 14, so that the speed of the powder upwardly sucked and sent by the wind power material lifting pipe 30 and the speed of the powder downwardly flowed from the self-sliding pipe 20 tend to be balanced, thereby improving the stable flow smoothness of the powder passing through the self-sliding pipe 20 and the wind power material lifting pipe 30. Not only can the probability of blocking be further reduced, but also the problem of powder leakage from the discharge port 11 in the normal powder conveying process can be avoided since the bottom shell 12 is always in the state of closing the discharge port 11. Therefore, the powder conveying stability can be improved, and the powder loss and waste and the air dust pollution caused by powder leakage can be avoided, thereby improving the production cleanliness.

[0045] In some embodiments, referring to 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 power material lifting pipe 30; the upper boundaries of the air guide plate 123, the bottom plate 122 and the two side plates 121 jointly form an interface matched with the discharge port 11, and an air avoiding area is formed between the lower end of the air guide plate 123 and the lower end of the bottom plate 122; the material turning plate 13 is slidingly connected between the two side plates 121 and abuts against the lower surface of the bottom plate 122, an air inlet channel 125 is formed between the material turning plate 13 and the air guide plate 123, and the upper end of the air inlet channel 125 forms the air inlet 14.

[0046] It should be noted that the two side plates 121 are flush with the two side walls of the elbow 10 respectively, the air deflector 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-discharging pipe 20, thereby ensuring that the interface can be seamlessly connected with the discharge port 11 when the bottom shell 12 is closed, avoiding the leakage of powder from the interface and the discharge port 11. On this basis, a sealing ring 124 can be arranged around the interface or the discharge port 11, and the sealing ring 124 is used to seal the connection part of the interface and the discharge port 11, further reducing the probability of powder leakage, and at the same time, the sealing ring 124 can also be used to form a guide limiting, ensuring that the interface and the discharge port 11 can be accurately positioned when the bottom shell 12 is closed from the open state.

[0047] In the embodiment, the air deflector 123 is arc-shaped and forms an air inlet channel 125 with the arc-shaped turning plate 13 in the air avoidance area. The air deflector 123 is closer to the vertical direction than the turning plate 13, so that the air inlet channel 125 is formed in a trumpet shape gradually expanding outward from top to bottom, thereby improving the flow of external airflow into the wind lifting pipe 30 through the air inlet channel 125. At the same time, the gradually narrowing airflow direction can increase the speed of the airflow passing through the air inlet 14, thereby increasing the force of the airflow of the air inlet 14 on the upward conveying of the powder in the wind lifting pipe 30, which is beneficial to reduce the probability of blockage.

[0048] Specifically, as shown in Figure 5 Two arc-shaped grooves 1211 are formed in the two side plates 121 respectively, and the two sides of one end of the turning plate 13 facing the self-discharging pipe 20 are respectively provided with sliding pins 131 corresponding to the arc-shaped grooves 1211. A supporting plate 126 is arranged between the two side plates 121 for supporting the middle part of the turning plate 13, and at least one roller 1212 is arranged on each side plate 121 for rolling down the turning plate 13.

[0049] The sliding cooperation of the sliding pins 131 in the arc-shaped grooves 1211, the supporting plate 126 and the rolling of the turning plate 13 can make the turning plate 13 move stably along the track of the arc-shaped groove 1211 under the driving of the adjusting structure. The supporting plate 126 is used to avoid the downward swing of the turning plate 13, which can cause the powder to leak outward from the air avoidance area. In order to reduce the adjusting movement resistance of the turning plate 13 to the supporting plate 126, a plurality of supporting wheels 1261 can be arranged on the supporting plate 126 to roll and support the lower surface of the turning plate 13. The purpose of the rollers 1212 arranged on the two side plates 121 for rolling down the turning plate 13 is to form an upper limit for the turning plate 13, thereby avoiding the upward swing of the turning plate 13 under the negative pressure suction of the wind lifting pipe 30, which can affect the passability of the powder in the elbow 10, ensure the stable flow of the powder through the elbow 10, and further reduce the probability of blockage.

[0050] In some possible implementation manners, please refer to Figures 5 to 7The adjusting mechanism 50 comprises a driving box 51, two rotating shafts 52, a rotary driving member 53, an extension driving member 54 and a connecting rod 55. The driving box 51 is fixedly connected to the bottom wall of the elbow 10 near one end of the self-feeding pipe 20. The driving box 51 is provided with two ear plates 511 on both sides of the end portion facing the turning plate 13. The two rotating shafts 52 are coaxially fixedly arranged in the two opposite side walls of the bottom shell 12 and are rotatably arranged in the two ear plates 511 respectively. The rotary driving member 53 is arranged in the driving box 51 and is connected to the two rotating shafts 52 at the output end. The extension driving member 54 is arranged in the driving box 51 and is provided with a connecting shaft 541 at the output end. One end of the connecting rod 55 is rotatably sleeved on the connecting shaft 541, and the other end is hingedly connected to one end of the turning plate 13 facing the self-feeding pipe 20. The rotary driving member 53 and the extension driving member 54 are electrically connected to the controller respectively. When the extension driving member 54 drives the turning 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 are coaxial, and the rotary driving member 53 is used to drive the two rotating shafts 52 to rotate synchronously in the coaxial state to swing the bottom shell 12 to open.

[0051] The driving box 51 is arranged to serve as the connection basis of the rotary driving member 53 and the extension driving member 54, to reduce the number of fasteners arranged on the wind lifting pipe 30 as much as possible, to ensure the smoothness of the inner wall of the wind lifting pipe 30, and to improve the smoothness of the upward pumping of the powder in the wind lifting pipe 30. In addition, the rotary driving member 53 and the extension driving member 54 can be avoided to be exposed except for the output ends, so as to improve the overall appearance regularity.

[0052] Since the turning plate 13 is arranged in the elbow 10, it is required to receive the powder flowing down from the self-feeding pipe 20 and guide the powder to turn upward into the wind-feeding pipe 30, therefore the opening degree of the air inlet 14 is adjusted, the movement track of the turning plate 13 is not a straight line, and here the connecting rod 55 is arranged between the output end of the telescopic driving member 54 and the turning plate 13, the telescopic driving member 54 can transmit the linear movement of the output end to the turning plate 13 to form a curved movement by the swinging freedom of the two ends of the connecting rod 55, so as to avoid the problem of movement jam of the turning plate 13; on this basis, since the turning plate 13 is installed on the bottom shell 12, when the bottom shell 12 is opened, the turning plate 13 needs to swing downward synchronously with the bottom shell 12, and the opening time of the bottom shell 12 is when the opening degree of the air inlet 14 is the largest and the airflow detection value is still lower than the lower limit of the set interval, therefore the limit position of the movement of the turning plate 13 is positioned, the connecting shaft 541 and the rotating shaft 52 are coaxial when the adjusting mechanism 50 drives the turning plate 13 to move to the limit position of the largest opening degree of the air inlet 14, so as to realize that the turning plate 13 swings together with the bottom shell 12 around the rotating shaft 52, which not only can ensure the smoothness of the opening and closing movement of the bottom shell 12, but also can make the opening and closing action of the bottom shell 12 match the opening degree adjustment of the air inlet 14 by the turning plate 13, so as to ensure the corresponding sensitivity of the opening degree adjustment of the air inlet 14 and the opening and closing movement of the bottom shell 12 based on the change of the airflow detection value.

[0053] As a specific embodiment of the rotating driving member 53, please refer to Figure 6 and Figure 7 , the rotating driving member 53 includes two worm gears 531, two worm shafts 532, and a first motor 533; wherein the two worm gears 531 are respectively rotationally connected to the two ear plates 511 and are respectively connected with the two rotating shafts 52; the two worm shafts 532 are respectively rotationally connected in the driving box 51 and are respectively meshed with the two worm gears 531, the two worm shafts 532 are respectively sleeved with synchronous rollers 5321, and the two synchronous rollers 5321 are drivingly connected through a synchronous belt 5322; the first motor 533 is arranged in the driving box 51 and the output end thereof is connected with one of the two worm shafts 532.

[0054] Here the first motor 533 is a bidirectional motor controlled by the controller, when the first motor 533 rotates forward, the worm shaft 532 directly connected with the first motor 533 rotates forward, and drives the other worm shaft 532 to rotate forward through the transmission of the synchronous belt 5322 and the synchronous rollers 5321, the two worm shafts 532 respectively drive the two worm gears 531 to rotate forward, and then the two worm gears 531 drive the two rotating shafts 52 to rotate forward to make the bottom shell 12 swing downward to open; when the first motor 533 reverses, the rotating directions of the two worm shafts 532 are reversed, thereby driving the two worm gears 531 to rotate reversely to drive the bottom shell 12 to swing upward to close through the rotating shaft 52.

[0055] Specifically, the two worm gears 531 can be sleeved on the two rotating shafts 52 respectively, or can be sleeved on the rotating shafts 52 as shown in the drawings based on the consideration of spatial layout to avoid interference of the worm 532 with the overturning swing of the bottom shell 12. Figure 7 As shown in the drawings, the first transmission gear 534 is sleeved on the rotating shaft 52 to avoid interference of the worm 532 with the overturning swing of the bottom shell 12 based on the consideration of spatial layout, and the second transmission gear 535 engaged with the first transmission gear 534 is installed on the side wall or the lug plate 511 of the drive box 51, and then the worm gear 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 gear 531 and transmit torque to the first transmission gear 534, and then the rotating shaft 52 is driven to rotate by the first transmission gear 534 to realize the opening and closing action of the bottom shell 12, thereby more space around the rotating shaft 52 can be obtained to avoid the opening and closing interference problem of the bottom shell 12.

[0056] It should be noted that the worm gear 531 and the worm 532 described above have self-locking property, that is, the worm 532 can drive the worm gear 531 to rotate, but the worm gear 531 cannot drive the worm 532 to rotate, thereby the self-locking property can be used to ensure the stability of the bottom shell 12 in the closed state, avoid the gap between the interface and the discharge port 11 caused by the activity of the bottom shell 12, and also avoid the influence of the service life of the first motor 533 caused by the reverse force.

[0057] As a specific embodiment of the telescopic drive 54, please refer to Figures 5 to 7 The telescopic drive 54 includes a second motor 542 and a sliding frame 544; the second motor 542 is arranged in the drive box 51 and has a driving screw 543 connected to the output end; the sliding frame 544 is slidably connected to the drive box 51 along the axial direction of the driving screw 543, and a screw sleeve 545 is arranged on the sliding frame 544 and sleeved on the driving screw 543 and screwed with the driving screw 543; one end of the sliding frame 544 facing the turnover plate 13 is provided with a connecting shaft 541.

[0058] The second motor 542 can be a bidirectional motor controlled by the 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 sliding frame 544 to move towards the direction close to the turning plate 13, thereby driving the turning plate 13 to move to reduce the opening of the air inlet 14. This condition is suitable for the detection value of the airflow sensor 40 increasing in the set interval, at this time, the amount of powder flowing from the self-feeding pipe 20 is small, the turning plate 13 can not only reduce the opening of the air inlet 14, but also increase the extension amount into the wind power lifting pipe 30, thereby increasing the turning height of the powder into the separation lifting pipe and reducing the probability of powder leakage. When the detection value of the airflow sensor 40 decreases in the set interval, the second motor 542 drives the driving screw 543 to rotate reversely, thereby driving the screw sleeve 545 to drive the sliding frame 544 to move away from the turning plate 13, and then driving the turning plate 13 to move to increase the opening of the air inlet 14. At this time, the amount of powder flowing from the self-feeding pipe 20 is large, and the increase of the opening of the air inlet 14 can ensure the upward conveying speed of the powder in the wind power lifting pipe 30, thereby reducing the probability of powder blocking. On this basis, the reverse movement of the turning plate 13 makes the extension length of the turning plate 13 in the wind power lifting pipe 30 shorter, thereby increasing the space for the powder to pass through the joint 10 and the joint part of the wind power lifting pipe 30, thereby ensuring that the powder can smoothly pass through the joint 10 into the wind power lifting pipe 30, and further reducing the probability of powder blocking.

[0059] It should be noted that the driving screw 543 and the screw sleeve 545 have self-locking performance based on the setting of the thread helix angle, that is, the driving screw 543 can drive the screw sleeve 545 to move, but the screw sleeve 545 cannot drive the driving screw 543 to rotate, thereby on the one hand, the stability of the turning plate 13 at the current position can be ensured, and on the other hand, the second motor 542 can be prevented from being affected by the reverse force to affect the service life.

[0060] As shown in Figure 6 and Figure 7 , the driving box 51 is provided with a guide seat 515, the sliding frame 544 has two sliding rods slidingly arranged in the guide seat 515, the screw sleeve 545 is arranged between the two sliding rods, and the driving screw 543 extends into the two sliding rods through the screw sleeve 545, thereby the guide seat 515 can guide the two sliding rods to improve the overall movement stability of the sliding frame 544, and the driving screw 543 arranged between the two sliding rods can improve the structural compactness.

[0061] In some possible implementation manners, please refer to Figure 6 and Figure 7The first gear 5431 is sleeved on the driving screw 543, one of the second gears 5323 is sleeved on the worm 532, and the second gears 5323 are distributed in an axial direction of the driving screw 543 and are offset from the first gear 5431; the 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 with the handle 5121, and the other end of the operating rod 512 is sleeved with the third gear 5122; wherein the operating rod 512 has two states of moving in the axial direction of the driving screw 543 to make the third gear 5122 mesh with the first gear 5431 or the second gear 5323.

[0062] In order to avoid the situation that the turnover plate 13 and the bottom shell 12 cannot be actuated in the motor failure or power-off state, the third gear 5122 can be meshed with the first gear 5431 by sliding the operating rod 512 in the axial direction, so that the first gear 5431 is driven to rotate by manually rotating the handle 5121, and the driving screw 543 is driven to rotate by the first gear 5431, and the carriage 544 is driven to move by the cooperation of the screw sleeve 545 and the driving screw 543, and the opening degree of the air inlet 14 is manually adjusted by the movement of the carriage 544 and the turnover plate 13 driven by the connecting rod 55; when the air inlet 14 is adjusted to the maximum opening degree, the connecting shaft 541 and the rotating shaft 52 are coaxial, and then the third gear 5122 is meshed with the second gear 5323 by sliding the operating rod 512, so that the second gear 5323 is driven to rotate by rotating the handle 5121 through the third gear 5122, and the worm 532 directly connected with the second gear 5323 is rotated, and the other worm 532 is synchronously rotated by the synchronous belt 5322, so that the two worms 532 drive the two worm gears 531 to rotate, respectively, so that the two rotating shafts 52 drive the bottom shell 12 to swing to open or close, and the manual operation of the bottom shell 12 is realized.

[0063] It should be noted that, in order to meet the manual operation of the turnover plate 13 and the bottom shell 12, the first motor 533 and the second motor 542 are motors without brake or power-off self-locking function. In addition, referring to Figure 7 In order to avoid the third gear 5122 being too large in diameter and affecting the compactness of the overall structure, the fourth gear 516 is arranged in the driving box 51 and meshed with the second gear 5323 in this embodiment, and the third gear 5122 is indirectly driven to the second gear 5323 through the meshing of the fourth gear 516 and the third gear 5122.

[0064] Specifically, referring to Figure 6The first shaft seat 513 and the second shaft seat 514 are arranged at intervals in the driving box 51 in the embodiment, the operating rod 512 slides through the first shaft seat 513 and the second shaft seat 514, the first limiting table 5123 and the second limiting table 5124 are respectively arranged on the two sides of the second shaft seat 514, the elastic element 5125 is sleeved on the operating rod 512, and the elastic element 5125 is located between the first shaft seat 513 and the third gear 5122; when the operating rod 512 moves to the first limiting table 5123 and abuts against the second shaft seat 514 under the action of the elastic element 5125, the third gear 5122 is engaged with the first gear 5431; when the operating rod 512 moves to the second limiting table 5124 and abuts against the second shaft seat 514 by overcoming the force of the elastic element 5125, the third gear 5122 is engaged with the second gear 5323.

[0065] The abutting relationship of the first limiting table 5123 and the second limiting table 5124 on the two sides of the second shaft seat 514 can limit the axial displacement of the operating rod 512, so as to ensure 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, the elastic element 5125 such as a spring is arranged between the third gear 5122 and the first shaft seat 513 to form an elastic thrust force in the axial direction of the operating rod 512, so that the operating rod 512 can be kept in the state of abutting against the second shaft seat 514 at the first limiting table 5123 in the normal state, and the third gear 5122 is in the engaged state with the first gear 5431, so as to facilitate manual adjustment of the turnover plate 13 at any time.

[0066] It should be noted that, in the embodiment, as shown in Figures 1 to 4 The gas hammer 60 is arranged at the joint position of the self-flowing pipe 20 and the elbow 10, and the gas hammer 60 is electrically connected with the controller. Specifically, since the joint position of the self-flowing pipe 20 and the elbow 10 is a key position of powder blockage, the gas hammer 60 is arranged at the position, when the detection value of the airflow sensor 40 decreases in the set interval and the detection value of the airflow sensor 40 is lower than the lower limit value of the set interval, the controller controls the gas hammer 60 to be powered on and run, and the gas hammer 60 is used to strike the joint position of the self-flowing pipe 20 and the elbow 10, so that the powder in the self-flowing pipe 20 flows downward, thereby improving the automatic unblocking effect.

[0067] It should be explained that, please refer to Figure 3The diameter of the self-sliding pipe 20 gradually decreases from top to bottom, and the diameter of the wind lifting pipe 30 gradually increases from bottom to top. The powder gradually gathers in the process of flowing down the self-sliding pipe 20, and then is guided by the turning plate 13 to turn upward into the wind lifting pipe 30; at the same time, the powder gradually disperses in the process of upward flowing under the pumping action of the wind lifting pipe 30, thereby improving the pumping efficiency and stability, avoiding the situation that the powder cannot flow upward due to excessive concentration in the wind lifting pipe 30; in addition, the narrowed lower ends of the self-sliding pipe 20 and the wind lifting pipe 30 can obtain higher airflow speed, thereby improving the smoothness and speed of the powder passing through the inside of the elbow 10, which is beneficial to reduce the probability of blocking and improve the smoothness and stability of powder conveying.

[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An induced material extractor, characterized in that, The self-sliding pipe and the wind lifting pipe form a V shape through a bend; the bottom of the bend is open to form a discharge port, the discharge port is hinged with an openable bottom shell, the bottom shell is movably connected with an arc-shaped turning plate, the turning plate is used to guide the powder falling from the self-sliding pipe to turn upward into the wind lifting pipe, and an air inlet is formed between the turning plate and the inner wall of the bottom shell away from the self-sliding pipe; The wind lifting pipe is provided with an airflow sensor for detecting the airflow and feeding back the detection value to a controller; the bottom of the bend is provided with an adjusting mechanism controlled by the controller, and the adjusting mechanism is connected with the bottom shell and the turning plate respectively; The controller controls the adjusting mechanism to drive the turning plate to move to adjust the opening degree of the air inlet based on the detection value; when the opening degree of the air inlet is the largest and the detection value is lower than the lower limit value of the set range, the adjusting mechanism drives the bottom shell to swing downward to open the discharge port; The adjusting mechanism comprises: A driving box is fixedly connected to the bottom wall of one end of the bend close to the self-sliding pipe, and the end of the driving box towards the turning plate is provided with an ear plate on each side; Two rotating shafts are coaxially fixedly arranged in two opposite side walls of the bottom shell, and the two rotating shafts are rotatably arranged in the two ear plates respectively; A rotary driving member is arranged in the driving box and connected with the two rotating shafts at the output end; A telescopic driving member is arranged in the driving box and provided with a connecting shaft at the output end; A connecting rod is rotatably sleeved with the connecting shaft at one end and hingedly connected with one end of the turning plate towards the self-sliding pipe at the other end; The rotary driving member and the telescopic driving member are electrically connected with the controller respectively; when the telescopic driving member drives the turning plate to move to the maximum opening degree of the air inlet through the connecting rod, the connecting shaft and the rotating shaft form a coaxial state, and the rotary driving member is used to drive the two rotating shafts to rotate synchronously in the coaxial state to make the bottom shell swing open.

2. The induced material presenter of claim 1, wherein, The bottom shell comprises two opposite side plates, a bottom plate connected between the ends of the two side plates close to the self-sliding pipe, and a wind guide plate connected between the ends of the two side plates close to the wind lifting pipe; wherein the upper boundaries of the wind guide plate, the bottom plate and the two side plates jointly form an interface matched with the discharge port, and an air avoidance area is formed between the lower end of the wind guide plate and the lower end of the bottom plate; the turning plate is slidably connected between the two side plates and abuts against the lower surface of the bottom plate, an air inlet channel is formed between the turning plate and the wind guide plate, and the upper end of the air inlet channel forms the air inlet.

3. The induced material presenter of claim 2, wherein, Corresponding arc-shaped grooves are formed on the two side plates, and the turning plate is provided with sliding pins corresponding to the arc-shaped grooves on both sides of one end thereof; a supporting plate is arranged between the two side plates to support the middle part of the turning plate, and at least one roller is arranged on each of the two side plates to roll downward on the turning plate.

4. The induced material presenter of claim 1, wherein, The rotary driving member comprises: Two worm gears are rotatably connected with the two ear plates and connected with the two rotating shafts respectively; Two worm gears are rotatably connected in the driving box and meshed with the two worm wheels respectively, and two synchronous rollers are correspondingly sleeved on the two worm gears, and the two synchronous rollers are drivingly connected through a synchronous belt; A first motor is arranged in the driving box and has an output end connected with one of the worm gears.

5. The induced material presenter of claim 4, wherein, The telescopic driving member comprises: A second motor is arranged in the driving box and has an output end connected with a driving screw; A sliding frame is slidingly connected with the driving box along the axial direction of the driving screw, and a screw sleeve is arranged on the sliding frame, the screw sleeve is sleeved on the driving screw and is screw-connected with the driving screw; one end of the sliding frame towards the turnover plate is provided with the connecting shaft.

6. The induced material presenter of claim 5, wherein, A first gear is sleeved on the driving screw, a second gear is sleeved on one of the worm gears, and the second gear is distributed in a staggered manner 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 with a handle, and the other end of the operating rod is sleeved with a third gear; wherein, the operating rod has two states of moving along the axial direction of the driving screw to make the third gear mesh with the first gear or the second gear.

7. The induced material presenter of claim 6, wherein, The driving box is provided with a first shaft seat and a second shaft seat at intervals, the operating rod is slidingly arranged in the first shaft seat and the second shaft seat, and the operating rod is provided with a first limiting table and a second limiting table on both sides of the second shaft seat, a resilient member is sleeved on the operating rod, and the resilient member is located between the first shaft seat and the third gear; wherein, when the operating rod moves to the first limiting table and abuts against the second shaft seat under the action of the resilient member, the third gear meshes with the first gear; when the operating rod moves to the second limiting table and abuts against the second shaft seat by overcoming the action force of the resilient member, the third gear meshes with the second gear.

8. The induced material presenter of claim 1, wherein, A pneumatic hammer is arranged on the joint between the self-rolling pipe and the elbow, and the pneumatic hammer is electrically connected with the controller.

9. The induced material presenter of any of claims 1-8, wherein, The pipe diameter of the self-rolling pipe gradually decreases from top to bottom, and the pipe diameter of the wind power material lifting pipe gradually increases from bottom to top.

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