Powder conveying system, unloading device and unloading control method

Abstract

The invention discloses a powder conveying system, a discharging device and a discharging control method. The discharging device comprises a supporting frame, a feeding device and a discharging device, the blanking assembly is communicated with the stock bin when the stock bin to be unloaded reaches a preset unloading position; the valve opening mechanism is used for opening a switch valve of the stock bin when the stock bin reaches the discharging position; the vibration mechanism responds to the starting instruction to start vibration and responds to the closing instruction to stop vibration; the sensor group is used for acquiring the current position of the stock bin and the current weight of the materials; the controller is used for receiving the current position of the stock bin and generating the starting instruction when the current position reaches the discharging position; the controller is further used for receiving the current weight of the stock bin in the discharging process and generating the closing instruction under the condition that the current weight is smaller than or equal to a weight threshold value. Accurate positioning of the stock bin is achieved, and powder overflowing or dust raising in the discharging process is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a powder conveying system, a discharging device and a discharging control method. Background Art

[0002] In the biomedicine, food, chemical and other industries, powders are mostly transported through powder conveying systems. When the powder is transported and unloaded using a mobile turnover silo, the existing technology mostly uses a simple bracket to complete the silo (barrel) positioning, valve opening and gravity dropping process. The accuracy of unloading is difficult to guarantee, and the silo needs to be manually adjusted. The position accuracy of the unloading device is poor, resulting in powder spillage or dust during the unloading process.

[0003] In view of this, providing a powder conveying system, a discharge device and a discharge control method to achieve accurate positioning of the silo and prevent powder overflow or dust during the discharge process has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0004] To this end, an embodiment of the present invention provides a powder conveying system, a discharge device and a discharge control method to solve at least one technical problem existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0006] The present invention provides a discharging device for a powder conveying system, the discharging device comprising:

[0007] Support frame;

[0008] A material dropping assembly, which is mounted on the support frame and is connected to the silo when the silo to be unloaded reaches a preset unloading position;

[0009] A valve opening mechanism, which is mounted on the support frame and opens the switch valve of the silo when the silo reaches the unloading position;

[0010] A vibration mechanism, the vibration mechanism is in transmission connection with the support frame, the vibration mechanism starts vibration in response to a start instruction, and stops vibration in response to a close instruction;

[0011] A sensor group, wherein the sensor group is used to obtain the current position of the silo and the current weight of the material;

[0012] A controller is used to receive the current position of the silo and generate the start instruction when the current position reaches the unloading position; the controller is also used to receive the current weight of the silo during the unloading process and generate the closing instruction when the current weight is less than or equal to a weight threshold.

[0013] During the working process, by detecting the current position of the silo, when the silo reaches the specified position, the machine ensures that the blanking assembly and the silo are connected, and then opens the switch valve of the silo to unload. At the same time, the vibration mechanism is used to assist in vibration blanking, which realizes the accurate positioning of the silo and prevents powder overflow or dust during the unloading process.

[0014] In some embodiments, the support frame comprises:

[0015] A base, the base being fixed to the ground;

[0016] A positioning bracket is movably mounted on the base; the blanking assembly and the valve opening mechanism are both mounted on the positioning bracket, and the vibration mechanism is transmission-connected to the positioning bracket.

[0017] In some embodiments, the support frame further comprises:

[0018] An elastic buffer is disposed between the base and the positioning bracket, and the compression or extension direction of the elastic buffer is at least the height direction.

[0019] In some embodiments, the blanking assembly includes:

[0020] A material drop pipe, the material drop pipe is installed on the positioning bracket, and the material outlet of the silo is connected to the material drop pipe;

[0021] The dust cover flips over when driven by the cover-opening pneumatic swing cylinder to cover or avoid the pipe mouth of the drop pipe. The cover-opening pneumatic swing cylinder opens in response to the cover-opening instruction of the controller. The controller generates the cover-opening instruction when the current position reaches a preset cover-opening position, and the cover-opening position is higher than the unloading position.

[0022] In some embodiments, the blanking assembly further comprises:

[0023] A sealing structure is installed on the inner wall of the drop pipe and is tightly fitted with the discharge port of the silo.

[0024] In some embodiments, the valve opening mechanism comprises:

[0025] A valve opening block, the valve opening block cooperates with the switch valve;

[0026] A valve-opening pneumatic swing cylinder is transmission-connected to the valve-opening block and is started in response to a valve-opening instruction from the controller.

[0027] In some embodiments, the sensor group includes:

[0028] A position sensor, which is used to obtain the current position of the silo and to detect whether the dust cover is in place and the valve block is in place;

[0029] The metering sensor is used to obtain the current weight of the material.

[0030] The present invention also provides a powder conveying system, comprising the discharge device as described above.

[0031] The present invention also provides a discharge control method based on the above-mentioned discharge device or the above-mentioned powder conveying system; the method comprises:

[0032] Get the current position of the silo;

[0033] When the current position reaches a preset unloading position, the start instruction is generated, and the start instruction is used to control the vibration mechanism to start;

[0034] During the unloading process, obtaining the current weight of the silo;

[0035] In the case that the current weight is less than or equal to the weight threshold, the shutdown instruction is generated, and the shutdown instruction is used to control the vibration mechanism to stop.

[0036] In some embodiments, when the current position reaches a preset unloading position, the start instruction is generated, and the process also includes:

[0037] When the current position reaches a preset cover opening position, a cover opening instruction is generated, and the cover opening instruction is used to control the start of the cover opening pneumatic swing cylinder;

[0038] Wherein, the cover opening position is higher than the unloading position. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0040] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0041] Figure 1 This is a schematic diagram of the structure of the unloading device provided by the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the dust cover in the unloading device provided by the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of a material discharge pipe in the material discharge device provided by the present invention;

[0044] Figure 4 for Figure 3 Cross-section view along the AA direction;

[0045] Figure 5 This is a structural schematic diagram of the valve opening mechanism in the discharge device provided by the present invention;

[0046] Figure 6 A flow chart of the unloading control method provided by the present invention;

[0047] Figure 7 This is a structural block diagram of a computer device provided by the present invention.

[0048] Description of reference numerals:

[0049] 1-base, 2-positioning bracket, 3-rubber spring, 4-guide plate, 5-dust cover, 6-dropping tube;

[0050] 7-sealing airbag, 8-valve opening mechanism, 9-level switch, 10-control box, 11-detection switch;

[0051] 12-vibration motor, 13-safety cable, 14-expansion bolt, 15-weighing module, 16-bearing seat;

[0052] 17-rotating shaft, 18-fixed seat, 19-opening pneumatic swing cylinder, 20-speed regulating valve, 21-opening detection switch;

[0053] 22-level switch seat, 23-airbag mounting seat, 24-sealing airbag, 25-air nozzle, 26-glass bead screw;

[0054] 27-adjusting spring, 28-valve opening block, 29-valve opening pneumatic swing cylinder, 30-detection component, 31-vertical spring; 32-lateral spring, 33-fixed frame, 34-movable frame, 35-movable plate; 61-bracket. DETAILED DESCRIPTION

[0055] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In order to at least partially solve the problems existing in the prior art, such as the inability to ensure accurate positioning of the silo, accurate docking and detection of valve opening, the inability to ensure smoothness during unloading, the inability to monitor the material flow dynamics in real time, the difficulty in ensuring automatic docking between the silo discharge port and the docking device, and the inability to prevent powder overflow and dust during unloading, the present invention provides a unloading device, which realizes accurate docking and precise valve opening during unloading by setting components such as a material dropping assembly, a valve opening mechanism, a vibration mechanism and a controller, thereby avoiding powder overflow and dust.

[0057] Combine the following Figure 1-Figure 5 The unloading device for the powder conveying system provided by the present invention is introduced.

[0058] In a specific embodiment, the unloading device provided by the present invention is used in a powder conveying system, for example, in a powder conveying system in the biomedicine, food, chemical and other industries. The unloading device includes a support frame, a blanking assembly, a valve opening mechanism 8, a vibration mechanism, a sensor group and a controller; wherein the support frame is the basic structure of the entire unloading device, usually fixed on the ground, and used to support other parts of the device; a guide structure is provided on the support frame, such as a positioning plate with a guide groove, which can achieve precise positioning through the positioning plate with a guide groove. The blanking assembly is installed on the support frame and is connected to the silo when the silo to be unloaded reaches a preset unloading position; specifically, when the sensor group detects that the silo has reached the specified position, the silo is connected to the blanking assembly to prepare for the subsequent blanking operation. The valve opening mechanism 8 is installed on the support frame, and opens the switch valve of the silo when the silo reaches the unloading position; when the silo reaches the unloading position, the valve opening mechanism 8 is started, and the valve opening mechanism 8 is actuated to open the switch valve of the silo, so that the discharge port of the silo is opened, so as to prepare for the subsequent material discharge operation.

[0059] The vibration mechanism is transmission-connected to the support frame, and the vibration mechanism starts vibration in response to a start instruction, and stops vibration in response to a close instruction; the vibration mechanism can be a vibration motor 12, and the smoothness of unloading is achieved by the vibration motor 12. For example, the vibration motor 12 adopts a 40W power and can generate an exciting force of 0.9KN, which can be used for a silo less than 1000KG. The built-in adjustable eccentric block can adjust different exciting forces according to different requirements, with low energy and high efficiency; theoretically speaking, the vibration mechanism used to assist unloading can also be other pneumatic vibration components.

[0060] The sensor group is used to obtain the current position of the silo and the current weight of the material; specifically, the sensor group includes a position sensor and a metering sensor. The position sensor is used to obtain the current position of the silo, for example, it can be a photoelectric switch installed on the support frame, and the photoelectric switch is triggered when the silo falls into place; the metering sensor is used to obtain the current weight of the material, for example, it can be a weighing module 15 installed on the support frame, and the weighing module 15 is used to monitor the flow state of the internal material in real time. The weighing module 15 transmits the deformation of the internal strain gauge to the system, and can dynamically give the corresponding weight value, so as to monitor the flow state of the material inside the silo in real time, and accurately judge the residual internal material, which is accurate and convenient.

[0061] The controller is used to receive the current position of the silo and generate the start instruction when the current position reaches the unloading position; the controller is also used to receive the current weight of the silo during the unloading process and generate the closing instruction when the current weight is less than or equal to the weight threshold. Specifically, a control box can be installed on the support frame, the controller is arranged in the control box, and the control box is integrated with structures such as electrical buttons.

[0062] During the working process, by detecting the current position of the silo, when the silo reaches the specified position, the machine ensures that the blanking assembly and the silo are connected, and then opens the switch valve of the silo to unload. At the same time, the vibration mechanism is used to assist in vibration blanking, which realizes the accurate positioning of the silo and prevents powder overflow or dust during the unloading process.

[0063] In order to ensure the support stability and avoid the influence of auxiliary vibration on the overall stability of the device, the support frame can adopt a split structure. Specifically, the support frame includes a base 1 and a positioning bracket 2. A safety rope 13 can be arranged between the base 1 and the positioning bracket 2. One end of the safety rope 13 is fixed to the base 1, and the other end is fixed to the positioning bracket 2 to prevent the base 1 and the positioning bracket 2 from being separated. The base 1 is fixed to the ground. For example, the base 1 can be a square frame structure. The four corners of the base 1 are respectively provided with mounting feet, and each mounting foot is fixed to the ground by an expansion bolt 14. The positioning bracket 2 can be movably mounted on the base 1. The movably mounted means that the two can be moved by elastic parts or buffer parts, so that there can be a certain vibration gap between the two. The blanking assembly and the valve opening mechanism 8 are both installed on the positioning bracket 2. The vibration mechanism is connected to the positioning bracket 2 in a transmission manner. After the vibration mechanism is started, it will drive the positioning bracket 2 to vibrate. The blanking assembly vibrates with the positioning bracket 2, thereby assisting the silo unloading and improving the unloading efficiency. The control box 10 is installed on the base 1 and avoids the positioning bracket 2 to prevent the positioning bracket 2 from vibrating and causing the control box 10 to vibrate and cause disturbance of the electrical components.

[0064] In this embodiment, the positioning bracket 2 is a square frame, and guide angle plates are installed at the four corners of the positioning bracket 2. The guide angle plates are tilted inward from top to bottom, and the guide and limit functions are realized in the process of the silo entering the positioning bracket 2, so that the silo can accurately fall on the positioning bracket 2 and accurately dock with the drop tube 6. In other words, the guide angle plate can correct the position deviation of the silo by setting the chamfered section, so that the silo can slide into the angle correctly to ensure the accuracy of the working position of the silo. The above-mentioned photoelectric switch is installed on the positioning bracket 2, and the weighing module 15 is installed on the base 1 to avoid the influence of the vibration between positioning on the weighing module 15, so as to ensure the weighing accuracy.

[0065] Furthermore, in order to realize the movable connection between the positioning bracket 2 and the base 1, the support frame further includes an elastic buffer, which is arranged between the base 1 and the positioning bracket 2, and the compression or extension direction of the elastic buffer is at least the height direction. Specifically, the elastic buffer can be a rubber spring 3. Still taking the embodiment of the square frame as an example, there can be four rubber springs 3, which are arranged at the four corners of the base 1 and the positioning bracket 2. One end of the rubber spring 3 is fixed to the base 1, and the other end is fixed to the positioning bracket 2, which effectively avoids the influence of the vibration of the positioning bracket 2 on the base 1. The rubber spring can also be replaced by a compression spring of other different materials.

[0066] In some embodiments, please refer to Figure 1 , and please refer to Figure 2-Figure 4, the blanking assembly includes a blanking tube 6 and a dust cover 5; wherein the blanking tube 6 is installed on the positioning bracket 2, and the discharge port of the silo is connected to the blanking tube 6; a material level switch seat 22 is provided on the side of the blanking tube 6, and a spring structure is provided on the circumference of the blanking tube 6. The blanking tube 6 solves the automatic concentricity between the discharge port of the silo and the docking device through the spring structure. The spring structure inside the blanking tube 6 can adapt to the concentricity alignment when the discharge port of the silo enters the blanking tube mouth in the circumferential direction, and compensates for the deviation. It should be understood that the material level switch seat is installed with a material level switch, which transmits a signal to the PLC by sensing the material in the silo to determine whether there is material falling in the silo. When the discharge port of the silo enters the airbag of the blanking tube of part 2, the blanking tube of part 2 moves circumferentially in the inner circumference of the bracket of part 1 fixed on the positioning bracket, and the spring on the glass bead mounting shaft automatically compensates for the concentricity of the discharge port of the silo and the blanking tube. The dust cover 5 is flipped under the drive of the cover-opening pneumatic swing cylinder 19 to cover or avoid the pipe mouth of the drop pipe 6. The cover-opening pneumatic swing cylinder 19 is opened in response to the cover-opening instruction of the controller. The controller generates the cover-opening instruction when the current position reaches a preset cover-opening position, and the cover-opening position is higher than the unloading position.

[0067] Furthermore, by automatically adjusting and compensating for the eccentricity of the silo discharge port and the sealing airbag, the repeated adjustment of the silo position can be reduced. The head of the glass bead is a ball, which can reduce the friction surface with the drop tube during the adjustment process and protect the smooth surface of the drop tube. There is a spring on the inside of the adjustment bracket. The bracket has four support ears on its circumference, which are fixed on the positioning bracket of the unloading station. The welded drop tube 6 is inserted into the bracket 1. There are six glass bead screws 26, and each glass bead screw 26 is distributed in the circumferential direction of the drop tube 6 to facilitate the circumferential movement of the drop tube 6 to reduce friction and scratches on the surface. The six glass bead screws 26 in this circumferential direction are installed in the glass bead mounting shaft, and a spring is installed on the mounting shaft. The mounting shaft, spring, and glass bead screws 26 are fixed together in the side circumferential fixing hole of the bracket 61. The upper end face of the bracket 61 also has six glass bead screw mounting holes evenly distributed on the circumference. The glass bead screws 26 are directly screwed in. The function is to support the upper end face after the drop tube is inserted into the bracket 61, so as to reduce friction resistance when the drop tube 6 moves.

[0068] Specifically, the dust cover 5 is connected to the output shaft of the cover-opening pneumatic swing cylinder 19 through the rotating shaft 17. The cover-opening pneumatic swing cylinder 19 is installed on the positioning bracket 2 through the fixing seat 18, and the rotating shaft 17 is installed on the positioning bracket 2 through the bearing seat 16; the cover-opening pneumatic swing cylinder 19 is also provided with a speed regulating valve 20, and its rotation speed can be adjusted according to the use requirements, so as to ensure the smooth opening and closing of the dust cover 5. Theoretically speaking, in order to realize the opening and closing of the dust cover 5, its actuator is not limited to the form of the above-mentioned cover-opening pneumatic swing cylinder 19, and can also be a pneumatic or hydraulic actuator, etc. The dust cover 5 uses the speed regulating valve 20 to achieve the speed regulating function and the photoelectric switch or travel switch that detects the switch 11 in place, so that the actuator of the dust cover 5 has a signal feedback function, and can realize a 180-degree rotation of the switch cover, or a rotation switch cover of various angles, a flat movable switch cover, etc.

[0069] Furthermore, the blanking assembly also includes a sealing structure, which is installed on the inner wall of the blanking tube and is pressed and matched with the discharge port of the silo. Specifically, the sealing structure can be in the form of an airbag assembly, a groove is opened on the inner side of the blanking tube 6, an airbag mounting seat 23 is fixed in the groove, a sealing airbag is embedded in the airbag mounting seat 23, and the sealing airbag is connected to the air source through the air nozzle 25; when sealing is required, the air source is started to inject air into the sealing airbag to expand the airbag and press the discharge port of the silo, and after unloading, the gas in the sealing airbag is released.

[0070] In this way, the sealing airbag is inflated to ensure the sealing of unloading and solve the problems of powder overflow and dust. After the sealing airbag inside the drop pipe 6 is inflated to a certain pressure through the precision pressure reducing valve, it is tightly held to the outer wall of the silo discharge pipe to prevent powder overflow and dust during unloading, thereby avoiding environmental pollution. The precision pressure reducing valve can also protect the sealing airbag from being inflated and exploded.

[0071] In some embodiments, Figure 5 As shown, the valve opening mechanism 8 includes a valve opening block 28 and a valve opening pneumatic swing cylinder 29; wherein, the valve opening block 28 cooperates with the switch valve. During operation, the valve opening block 28 is embedded in the switch valve, and the valve opening pneumatic swing cylinder 29 is started to drive the valve opening block 28 to rotate, thereby realizing valve opening. The valve opening pneumatic swing cylinder 29 is transmission-connected to the valve opening block 28, and is started in response to the valve opening command of the controller. The valve opening mechanism 8 includes a mounting seat, and the mounting seat includes a fixed frame 33, a movable frame 34 and a movable plate 35. The fixed frame 33 is mounted on the positioning bracket 2, and the movable frame 34 is connected to the movable frame 33 through a vertical spring 31. The movable plate 35 is connected to the movable frame 34 through a transverse spring 32 to realize vertical and transverse position adjustment, thereby adapting to the position of the switch valve. The valve opening pneumatic swing cylinder 29 is installed on the movable plate 35 , the valve opening block 28 is transmission-connected to the valve opening pneumatic swing cylinder 29 and installed on one side of the valve opening pneumatic swing cylinder 29 , and a position detection component 30 is installed on the other side of the valve opening pneumatic swing cylinder 29 .

[0072] In this way, the valve opening mechanism 8 ensures that the valve body is accurately docked and the switch is in place through the spring adjustment and electronic feedback detection switch 11. The vertical spring 31 and the transverse spring 32 in the valve opening mechanism 8 can automatically adjust the position of the valve opening block 28 up and down and left and right, so as to adapt to the position of the silo butterfly valve, so that the valve block of the butterfly valve can be smoothly introduced into the valve opening mechanism 8. The position detection component 30 of the valve opening pneumatic swing cylinder 29 can detect whether the valve plate of the silo butterfly valve is in place, and can also feedback to the system to determine the real-time position.

[0073] In addition to the above-mentioned unloading device, the present invention also provides a powder conveying system including the unloading device. For the structures of other parts of the powder conveying system, please refer to the prior art and will not be described in detail here.

[0074] For ease of understanding, the overall structural diagram and technical effects of the unloading device provided by the present invention are briefly described below using a specific usage scenario as an example.

[0075] This example takes the IBC silo (barrel) turnover scenario as an example. Please continue to refer to Figure 1-Figure 5 The unloading device includes a base 1, a positioning bracket 2, a rubber spring 3, a positioning plate, a dust cover 5, a drop pipe 6, a sealing airbag, a valve opening mechanism 8, a material level switch 9, a control box 10, a detection switch 11, a vibration motor 12, a safety rope 13, an expansion bolt 14 and a weighing module 15. During the assembly process, first fix the base 1 to the ground with expansion bolts 14, and set weighing modules 15 at the four corners of the base 1. The lower end of the weighing module 15 is connected to the base 1 through a connecting piece, and the upper end is connected to the rubber spring 3 through a connecting piece; the control box 10 is connected to the base 1, and the control box 10 needs to be separated from the positioning bracket 2 to ensure the weighing accuracy; the upper part of the rubber spring 3 is connected to the positioning bracket 2, and the base 1 and the positioning bracket 2 are connected by a safety rope 13 to ensure the structural stability; the guide plate 4 for positioning is welded to the four corners of the positioning bracket 2, the dust cover 5, the drop tube 6, the valve opening mechanism 8, the detection switch 11, the vibration motor 12 or other pneumatic vibration components required for the auxiliary unloading device are all installed on the positioning bracket 2 by screws, the sealing airbag is installed in the U-shaped groove of the mouth of the drop tube 6, and the level switch 9 is installed in the mounting seat of the drop tube 6.

[0076] The pneumatic swing cylinder 19 for opening the cover is fixed to the fixing seat 18 with screws, and the rotating shaft 17 is connected to the dust cover 5 through the bearing seat 16 (containing a deep groove ball bearing). In particular, the pneumatic swing cylinder 19 for opening the cover is provided with a speed regulating valve 20 and a cover opening detection switch 21. The speed regulating valve 20 has an adjustment function, which can control the speed of the actuator's action, thereby making the rotation speed of the dust cover 5 in the mechanism controllable. The cover opening detection switch 21 can detect whether the dust cover 5 is turned to the open position or the closed position, and can also feed back the signal to the controller to determine the precise position of the dust cover 5 in real time.

[0077] The material level switch seat 22 is welded on the blanking tube 6, and the adjusting spring 27 is evenly installed on the circumference of the blanking tube 6. The airbag mounting seat 23 is formed by spinning welding and connected to the blanking tube 6 by the glass bead screw 26. The air nozzle 25 is installed on the sealing airbag, and the sealing airbag is stuck in the airbag mounting seat 23; the sealing airbag needs to be externally connected with a precision pressure reducing valve, which can accurately control the inflation pressure, ensure that the airbag is inflated to the specified sealing pressure, and hold the outer wall of the silo discharge port tightly to achieve the sealing effect, while preventing the airbag from bursting due to excessive pressure. The adjusting spring 27 can be adapted to the concentricity alignment of the silo discharge port when entering the blanking tube 6 in the circumferential direction, and compensate for the deviation. The airbag is connected to the IBC silo discharge port in the form of airbag inflation and sealing, and the airbag inflation pressure and airbag safety are guaranteed by a precision pressure reducing valve. The IBC silo discharge port automatically finds the concentricity using a circumferentially evenly distributed spring structure.

[0078] In the valve opening mechanism 8, the vertical spring 31 and the transverse spring 32 are fixed on the mounting seat and can be adjusted up and down and left and right. The valve opening block 28 is installed on the valve opening pneumatic swing cylinder 29, and the valve opening pneumatic swing cylinder 29 has a detection component 30. The vertical spring 31 and the transverse spring 32 can automatically adjust the position of the valve opening mechanism 8 to adapt to the position of the silo butterfly valve up and down, so that the butterfly valve block can be smoothly introduced into the valve opening mechanism 8. The detection component 30 of the valve opening pneumatic swing cylinder 29 can detect whether the silo butterfly valve plate is opened and closed, and can also feed back to the controller to determine the real-time position of the valve opening block 28. The spring structure in the valve opening mechanism 8 used to open the IBC silo butterfly valve plate automatically adjusts to adapt to the butterfly valve, and the actuator includes pneumatic, electric, hydraulic and other forms, photoelectric switches with position feedback and position detection functions, travel switches, etc.

[0079] During the working process, when the fork-loaded IBC silo (barrel) reaches the unloading device, in the working mode, the dust cover 5 rotates 180 degrees to open the drop pipe 6 (the rotation of the dust cover 5 depends on the stroke detection component 30 of the actuator, which ensures that the dust cover 5 is turned in place and the system detects the position in real time). After the silo is lifted to the specified height, it falls through the chamfered section of the guide plate 4 and is introduced into the angle to achieve precise positioning. At the same time, the silo will trigger the detection switch 11. After the system detects that the silo has reached the working position, the sealing airbag is inflated through the precision pressure reducing valve, and the airbag expands outward to hold the outer wall of the silo discharge pipe to achieve a sealing effect. At the same time, the valve opening mechanism 8 rotates 90 degrees to open the butterfly valve at the discharge port of the IBC silo (the actuator of the valve opening mechanism 8 has a stroke detection component 30, which can ensure that the butterfly valve plate is opened and closed in place, and feedback the real-time position to the system). Vibration The motor 12 works at the same time, generating an exciting force which is transmitted to the positioning bracket 2, and then to the IBC silo, causing the entire silo to vibrate and assist in unloading. During the vibration process, the four corners of the bottom are buffered by rubber springs 3. During the unloading process, the weighing module 15 records the flow state of the material inside the IBC silo in real time online to determine whether the material has flowed out. The signal of the level switch 9 can detect whether there is any material residue on the inner wall of the drop pipe 6. The safety rope 13 is used as a safety auxiliary tool to prevent the positioning bracket 2 from separating from the base 1 during the vibration process. The base 1 is used as a fixing mechanism for the entire device and is fixed to the ground by expansion bolts 14. The control box 10 completes the control of the entire device. The closed automatic docking unloading device has a simple structure, is easy to process and manufacture, and has low cost and energy consumption. During the entire process of material transportation, no manual intervention is required, which is labor-saving and convenient.

[0080] It should be understood that when any pipe opening needs to be dustproof, the same or similar actuators as the present technology can be used, including pneumatic, electric, hydraulic, etc., using a speed control valve to achieve the speed control function, and a photoelectric switch, a travel switch, etc. for detecting whether the switch is in place, and with a signal feedback function; 180-degree rotating switch cover, rotating switch covers of various angles, parallel movable switch covers, etc.

[0081] Furthermore, the present invention also provides a discharge control method based on the discharge device as described above, or the powder conveying system as described above; Figure 6 As shown, the method comprises the following steps:

[0082] S610: Obtain the current position of the silo;

[0083] S620: generating a cover opening instruction when the current position reaches a preset cover opening position, wherein the cover opening instruction is used to control the start of the cover opening pneumatic swing cylinder;

[0084] S630: When the current position reaches a preset unloading position, generating the start instruction, wherein the start instruction is used to control the vibration mechanism to start;

[0085] S640: During the unloading process, obtaining the current weight of the silo;

[0086] S650: generating the shutdown instruction when the current weight is less than or equal to the weight threshold, wherein the shutdown instruction is used to control the vibration mechanism to stop;

[0087] Wherein, the cover opening position is higher than the unloading position.

[0088] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store static information and dynamic information data. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the steps in the above method embodiment are implemented.

[0089] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the computer device to which the solution of the present invention is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0090] Corresponding to the above embodiment, the embodiment of the present invention further provides a computer storage medium, which contains one or more program instructions, wherein the one or more program instructions are used to execute the above method.

[0091] The present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the above method.

[0092] In the embodiment of the present invention, the processor may be an integrated circuit chip having the ability to process signals. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0093] The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present invention can be directly embodied as a hardware decoding processor for execution, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The processor reads the information in the storage medium and completes the steps of the above method in combination with its hardware.

[0094] The storage medium may be a memory, which may be, for example, a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory.

[0095] Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.

[0096] The volatile memory may be a random access memory (RAM) which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct Rambus RAM (DRRAM).

[0097] The storage media described in the embodiments of the present invention are intended to include, but are not limited to, these and any other suitable types of memory.

[0098] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the present invention can be implemented using a combination of hardware and software. When software is used, the corresponding functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. Storage media can be any available media that can be accessed by general or special-purpose computers.

[0099] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A discharge device for a powder conveying system, characterized in that: The unloading device comprises: Support frame; A material dropping assembly, which is mounted on the support frame and is connected to the silo when the silo to be unloaded reaches a preset unloading position; A valve opening mechanism, which is mounted on the support frame and opens the switch valve of the silo when the silo reaches the unloading position; A vibration mechanism, the vibration mechanism is in transmission connection with the support frame, the vibration mechanism starts vibration in response to a start instruction, and stops vibration in response to a close instruction; A sensor group, wherein the sensor group is used to obtain the current position of the silo and the current weight of the material; A controller is used to receive the current position of the silo and generate the start instruction when the current position reaches the unloading position; the controller is also used to receive the current weight of the silo during the unloading process and generate the closing instruction when the current weight is less than or equal to a weight threshold.

2. The unloading device according to claim 1, characterized in that: The support frame comprises: A base, the base being fixed to the ground; A positioning bracket is movably mounted on the base; the blanking assembly and the valve opening mechanism are both mounted on the positioning bracket, and the vibration mechanism is transmission-connected to the positioning bracket.

3. The unloading device according to claim 2, characterized in that: The support frame also includes: An elastic buffer is disposed between the base and the positioning bracket, and the compression or extension direction of the elastic buffer is at least the height direction.

4. The unloading device according to claim 1, characterized in that: The blanking assembly comprises: A material drop pipe, the material drop pipe is installed on the positioning bracket, and the material outlet of the silo is connected to the material drop pipe; A dust cover, wherein the dust cover flips over when driven by a cover-opening pneumatic swing cylinder to cover or avoid the pipe opening of the drop tube, the cover-opening pneumatic swing cylinder opens in response to a cover-opening instruction from the controller, and the controller generates the cover-opening instruction when the current position reaches a preset cover-opening position, and the cover-opening position is higher than the unloading position; wherein the current position is obtained by a position sensor.

5. The unloading device according to claim 4, characterized in that: The blanking assembly also includes: A sealing structure is installed on the inner wall of the drop pipe and is tightly fitted with the discharge port of the silo.

6. The unloading device according to claim 1, characterized in that: The valve opening mechanism comprises: A valve opening block, the valve opening block cooperates with the switch valve; A valve-opening pneumatic swing cylinder is transmission-connected to the valve-opening block and is started in response to a valve-opening instruction from the controller.

7. The unloading device according to claim 1, characterized in that: The sensor group includes: A position sensor, which is used to obtain the current position of the silo and to detect whether the dust cover is in place and the valve block is in place; The metering sensor is used to obtain the current weight of the material.

8. A powder conveying system, characterized in that: Comprising a discharge device as described in any one of claims 1-7.

9. A discharge control method, based on the discharge device according to any one of claims 1 to 7, or the powder conveying system according to claim 8; characterized in that: The method comprises: Get the current position of the silo; When the current position reaches a preset unloading position, the start instruction is generated, and the start instruction is used to control the vibration mechanism to start; During the unloading process, obtaining the current weight of the silo; In the case that the current weight is less than or equal to the weight threshold, the shutdown instruction is generated, and the shutdown instruction is used to control the vibration mechanism to stop.

10. The unloading control method according to claim 9, characterized in that: When the current position reaches the preset unloading position, the start instruction is generated, and the method also includes: When the current position reaches a preset cover opening position, a cover opening instruction is generated, and the cover opening instruction is used to control the start of the cover opening pneumatic swing cylinder; Wherein, the cover opening position is higher than the unloading position.

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