Accurate metering and feeding device for extruded sheet production

Abstract

The invention discloses a precise metering feeding device for extruded sheet production, and relates to the technical field of feeding devices, the precise metering feeding device comprises a bottom plate, a controller is arranged at the top of the bottom plate close to the rear surface, and a conveying assembly for conveying powder and particle raw materials is arranged at the top of the bottom plate close to the center. According to the precise metering and feeding device for extruded sheet production, when pressure values displayed by two pressure sensors reach required values, two bearing plates are rotated downwards, so that powdery and granular materials enter a conical material mixing bin, a driving motor drives a driving rod to rotate, and the materials are fed into the conical material mixing bin; a plurality of stirring rods are driven to revolve and rotate at the same time, so that powdery and granular materials in the conical mixing bin are uniformly mixed, and the occurrence of caking and agglomeration conditions is reduced; the problem that in the prior art, in the extruded sheet production and processing process, due to the fact that powdery and granular production raw materials are large in difference and difficult to mix evenly, the foaming uniformity of the extruded sheet in the later period is affected is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of feeding devices, in particular to a precise metering feeding device for extruded sheet production. BACKGROUND

[0002] The extruded sheet is a kind of hard foam plastic sheet material made of polystyrene resin as the main raw material through the extrusion molding process, has excellent heat preservation, moisture resistance and compression resistance, is one of the commonly used materials in the building insulation field, and the precise metering feeding device for extruded sheet production is used for accurately controlling the supply amount of the extruded sheet production raw material and conveying the raw material to a specified position, can ensure the accuracy of the feeding in the production process, and further ensures the stable quality of the extruded sheet.

[0003] At present, in the process of extruded sheet production and processing, the extruded sheet processing raw material contains two kinds of powder and granular production raw materials, due to the great difference in density and flowability, the powder is easily settled by gravity and extruded to the edge of the pipeline by the particles during spiral conveying, resulting in uneven mixing, the light powder reaches the metering bin before the particles during vacuum suction, the component proportion deviation is caused, the foaming uniformity of the later extruded sheet is affected, and the operation stability, service life and maintenance cost of the precise metering feeding device for extruded sheet production are significantly harmed.

[0004] Therefore, the application provides a precise metering feeding device for extruded sheet production to solve the above problems. SUMMARY

[0005] The application aims to provide a precise metering feeding device for extruded sheet production to solve the problem that the powder and granular production raw materials are difficult to mix uniformly due to the great difference between the two in the process of extruded sheet production and processing, and affect the foaming uniformity of the later extruded sheet.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A precise metering and feeding device for extruded sheet production, comprising a bottom plate, a controller is arranged on the top of the bottom plate near the rear surface, a conveying assembly for conveying powder and granular raw materials is arranged on the top of the bottom plate near the center, a quantitative assembly for precise quantification is arranged inside the conveying assembly, a uniform mixing assembly for fully mixing the materials is arranged on the top of the bottom plate near one side edge, the uniform mixing assembly comprises a conical mixing bin, an inner tooth ring is fixedly installed inside the conical mixing bin near the bottom, a plurality of pinions are engagedly connected inside the inner tooth ring, stirring rods are fixedly installed on the outer surfaces of the plurality of pinions, a drive rod is arranged between the outer surfaces of the plurality of stirring rods, the drive rod drives the plurality of stirring rods to revolve, and the plurality of pinions also rotate under the driving action of the inner tooth ring, so that the plurality of stirring rods revolve and rotate at the same time to uniformly stir and mix the powdery and granular materials in the conical mixing bin.

[0007] Preferably, the uniform mixing assembly further comprises a driving motor, a plurality of stirring frames are uniformly fixedly installed on the outer surface of the drive rod, a fixed ring is fixedly installed on the inner wall of the conical mixing bin near the bottom, two support rods are slidingly connected inside the fixed ring, and a circulating pump is fixedly installed on the outer surface of the conical mixing bin through an auxiliary block.

[0008] Preferably, an air outlet pipe is fixedly communicated with the air outlet end of the circulating pump, an air inlet pipe is fixedly communicated with the air inlet end of the circulating pump, the air outlet end of the circulating pump is fixedly communicated with the air inlet pipe, a stepping motor is fixedly installed on the outer surface of the conical mixing bin near the bottom through a screw, a sealing baffle is fixedly installed on the output end of the stepping motor, and a leakage hole cover is fixed on the inner wall of the conical mixing bin near the bottom.

[0009] Preferably, the outer surface of the driving motor is fixedly connected with the outer surface of the conical mixing bin through a screw, the output end of the driving motor is fixedly connected with the top end of the drive rod, one end of each of the two support rods is fixedly connected with the outer surface of the drive rod, and the outer surfaces of the plurality of stirring rods are respectively rotationally connected with the inner walls of the plurality of stirring frames.

[0010] Preferably, the top end of the air outlet pipe is fixedly penetrated into the inside of the conical mixing bin, the bottom end of the air inlet pipe is fixedly penetrated into the inside of the conical mixing bin, the sealing baffle is arranged in the inside of the conical mixing bin, both ends of the sealing baffle are movably penetrated into the opposite outer parts of the conical mixing bin, and the outer surface of the conical mixing bin is fixedly connected with the top of the bottom plate through an auxiliary frame.

[0011] Preferably, the conveying assembly comprises a shell, the bottom of the shell is fixedly connected with the top of the bottom plate, the top of the shell is fixedly connected with a feeding hopper near one end, the outer surface of the shell is fixedly installed with a DC motor through screws, the output end of the DC motor is fixedly connected with a spiral blade, and the two ends of the spiral blade are movably penetrated into the opposite outer portions of the shell.

[0012] Preferably, the discharging end of the shell is fixedly connected with a mixing bin through screws, the top of the bottom plate is fixedly installed with a storage bin near the other side edge through an auxiliary frame, the top of the bottom plate is fixedly installed with a pneumatic conveying pump through screws, the input end of the pneumatic conveying pump is fixedly connected with a conveying pipe, the top end of the conveying pipe is fixedly penetrated into the inside of the storage bin, and the output end of the pneumatic conveying pump is fixedly connected with a connecting pipe.

[0013] Preferably, the top end of the connecting pipe is fixedly penetrated into the inside of the mixing bin, the outer surface of the mixing bin is fixedly connected with two guide pipes near the top, the outer surfaces of the two guide pipes are provided with electromagnetic valves, the top ends of the two guide pipes are fixedly connected with trace storage bins, the bottom of the mixing bin is fixedly connected with a material pipe, the outer surface of the material pipe is provided with an electric valve, and the bottom end of the material pipe is fixedly penetrated into the inside of the conical mixing bin.

[0014] Preferably, the quantitative assembly comprises a partition plate, the outer surface of the partition plate is fixedly connected with the inner wall of the mixing bin, the bottom of the partition plate is rotatably connected with a bearing plate near the two side edges through a sealing hinge, the outer surfaces of the two bearing plates are coupled with sealing rings, the bottoms of the two bearing plates are provided with pressure sensors, the bottom of the partition plate is fixedly installed with a servo motor through screws, and the output end of the servo motor is fixedly connected with a connecting rod.

[0015] Preferably, the bottom of the connecting rod is fixedly installed with an air pump through screws, the air outlet end of the air pump is fixedly connected with a communication pipe, the two ends of the communication pipe are fixedly penetrated into the inside of the connecting rod, the inside of the connecting rod is slidably connected with two sliding plugs, the outer surfaces of the two sliding plugs are fixedly installed with push rods, one end of each of the two push rods is movably penetrated into the outside of the connecting rod, and one end of each of the two push rods is fixedly installed with a receiving head.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、When the pressure values displayed by the two pressure sensors both reach the required value, the powdered and granular materials are both made to enter the interior of the conical mixing bin by rotating the two bearing plates downward, the driving motor drives the driving rod to rotate, driving the multiple stirring rods to revolve while also rotating, achieving uniform mixing of the powdered and granular materials in the conical mixing bin, and reducing the occurrence of clump breaking and agglomeration, solving the problem in the prior art that the great difference between the powdered and granular production materials makes it difficult to mix uniformly, affecting the uniformity of foaming of the extruded sheet in the later stage.

[0018] 2、To further improve the uniformity of the mixing of the two materials, the circulating pump is started, the air inlet pipe extracts gas into the conical mixing bin, and the gas is again backflowed into the interior of the conical mixing bin through the air outlet pipe, and this cycle relies on low wind speed and low pressure difference, uses airflow disturbance to promote material dispersion, makes the powder flow in the gap between the particles and break local agglomeration, and the airflow only circulates in a closed loop in the bin, is sprayed from the top of the conical mixing bin, passes through the material layer, is sucked through the air inlet pipe, and backflows to the conical mixing bin through the air outlet pipe, further improving the uniformity of the mixing of the powdered and granular materials, providing protection for subsequent extruded sheet production and processing, and reducing the amount of production failures.

[0019] 3、In the extruded sheet production and processing process, the granular material and the powdered material are first conveyed into the mixing bin and placed on the top of the two bearing plates, respectively, and are separated by the partition plate, when the weight is about to reach the required value, the two electromagnetic valves are opened, so that the powdered material and the granular material respectively located in the two micro material storage bins enter the interior of the mixing bin through the two conveying pipes, until the pressure values displayed by the two pressure sensors respectively reach the required value, so that the precise metering feeding device for extruded sheet production can accurately meter the weight of each component in the raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the precise metering feeding device for extruded sheet production of the application;

[0021] Figure 2 It is a partial perspective view of the conveying assembly of the precise metering feeding device for extruded sheet production of the application;

[0022] Figure 3 It is a partial cross-sectional perspective view of the mixing bin of the precise metering feeding device for extruded sheet production of the application;

[0023] Figure 4 It is another angle of the partial cross-sectional perspective view of the mixing bin of the precise metering feeding device for extruded sheet production of the application;

[0024] Figure 5 It is a partial cross-sectional perspective view of the connecting rod of the precise metering feeding device for extruded sheet production of the application;

[0025] Figure 6 For the invention Figure 5 Enlarged view at A in the invention;

[0026] Figure 7 For the invention, a precise metering feeding device for extruded plate production is a material pipe part perspective view;

[0027] Figure 8 For the invention, a precise metering feeding device for extruded plate production is a conical mixing bin part cutaway perspective view;

[0028] Figure 9 For the invention, a precise metering feeding device for extruded plate production is another angle perspective view of the conical mixing bin part;

[0029] Figure 10 For the invention, a precise metering feeding device for extruded plate production is a drive rod part perspective view.

[0030] In the figure:

[0031] 1, bottom plate; 2, controller; 3, conveying assembly; 301, shell; 302, feed hopper; 303, DC motor; 304, spiral blade; 305, mixing bin; 306, storage bin; 307, pneumatic conveying pump; 308, conveying pipe; 309, connecting pipe; 310, micro storage bin; 311, lead pipe; 312, electromagnetic valve; 313, material pipe; 314, electric valve; 4, quantitative assembly; 401, partition; 402, bearing plate; 403, sealing ring; 404, pressure sensor; 405, servo motor; 406, connecting rod; 407, air pump; 408, communication pipe; 409, sliding plug; 410, push rod; 411, adapter; 5, uniform mixing assembly; 501, conical mixing bin; 502, drive motor; 503, drive rod; 504, fixed ring; 505, support rod; 506, inner tooth ring; 507, stirring frame; 508, pinion; 509, stirring rod; 510, circulating pump; 511, air outlet pipe; 512, air inlet pipe; 513, stepper motor; 514, sealing baffle; 515, perforated cover. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-6The application provides the technical scheme: a precise metering and feeding device for extruded sheet production, the conveying assembly 3 comprises a shell 301, the bottom of the shell 301 is fixedly connected with the top of the bottom plate 1, a feeding hopper 302 is fixedly and communicatively arranged at the top of the shell 301 close to one end, a DC motor 303 is fixedly installed on the outer surface of the shell 301 through screws, a spiral blade 304 is fixedly connected with the output end of the DC motor 303, the two ends of the spiral blade 304 are movably and respectively penetrated to the opposite outer parts of the shell 301, a mixing bin 305 is fixedly and communicatively arranged at the discharging end of the shell 301 through screws, a storage bin 306 is fixedly and installed on the top of the bottom plate 1 close to the other side edge through an auxiliary frame, a pneumatic conveying pump 307 is fixedly installed on the top of the bottom plate 1 through screws, a conveying pipe 308 is fixedly and communicatively connected with the input end of the pneumatic conveying pump 307, the top end of the conveying pipe 308 is fixedly penetrated to the inside of the storage bin 306, a connecting pipe 309 is fixedly and communicatively connected with the output end of the pneumatic conveying pump 307, the top end of the connecting pipe 309 is fixedly penetrated to the inside of the mixing bin 305, two lead pipes 311 are fixedly and communicatively arranged on the outer surface of the mixing bin 305 close to the top, an electromagnetic valve 312 is arranged on the outer surface of each of the two lead pipes 311, a trace storage bin 310 is fixedly and communicatively arranged at the top end of each of the two lead pipes 311, a material pipe 313 is fixedly and communicatively arranged at the bottom of the mixing bin 305, an electric valve 314 is arranged on the outer surface of the material pipe 313, and the bottom end of the material pipe 313 is fixedly penetrated to the inside of the conical mixing bin 501.

[0034] In the embodiment, in the production and processing of the extruded sheet, first, the granular material is put into the inside of the feeding hopper 302, then the powdery material is put into the inside of the storage bin 306, and the controller 2 is started to drive the DC motor 303 to rotate the spiral blade 304, with the rotation of the spiral blade 304, the granular material in the feeding hopper 302 is transported to the end close to the DC motor 303, and enters the inside of the mixing bin 305 through the discharge port arranged at the bottom of the shell 301, and at the side of the partition plate 401 and on the top of the corresponding bearing plate 402, then the controller 2 is started to drive the pneumatic conveying pump 307 to draw the powdery raw material into the inside of the storage bin 306 through the conveying pipe 308, the raw material enters the inside of the connecting pipe 309, and finally is transported into the inside of the mixing bin 305 and at the other side of the partition plate 401 and on the top of the other corresponding bearing plate 402, at the same time, the two pressure sensors 404 respectively detect the weight of the powdery material and the granular material, when the weight reaches the required value, the controller 2 is started to respectively close the DC motor 303 and the pneumatic conveying pump 307, and the two solenoid valves 312 are opened respectively to make the powdery material and the granular material in the two trace storage bins 310 respectively enter the inside of the mixing bin 305 through the two conveying pipes 311, until the pressure values displayed by the two pressure sensors 404 respectively reach the required value, the two solenoid valves 312 are closed by the controller 2, so that the precise metering feeding device for extruded sheet production can accurately measure the weight of each component in the raw material.

[0035] As shown in Figures 4-6 The quantitative assembly 4 includes a partition plate 401, the outer surface of the partition plate 401 is fixedly connected with the inner wall of the mixing bin 305, the bottom of the partition plate 401 is rotatably connected with a bearing plate 402 through a sealing hinge near the two side edges, the outer surface of the two bearing plates 402 is coupled with a sealing ring 403, the bottom of the two bearing plates 402 is provided with a pressure sensor 404, the bottom of the partition plate 401 is fixedly installed with a servo motor 405 through a screw, the output end of the servo motor 405 is fixedly connected with a connecting rod 406, the bottom of the connecting rod 406 is fixedly installed with an air pump 407 through a screw, the gas outlet end of the air pump 407 is fixedly and continuously connected with a communication pipe 408, the two ends of the communication pipe 408 are fixedly and continuously connected into the inside of the connecting rod 406, the inside of the connecting rod 406 is slidably connected with two sliding plugs 409, the outer surface of the two sliding plugs 409 is fixedly installed with a push rod 410, one end of the two push rods 410 is movably and continuously connected to the outside of the connecting rod 406, and the other end of the two push rods 410 is fixedly installed with a receiving head 411.

[0036] In the embodiment, when the pressure values displayed by the two pressure sensors 404 reach the required value, first, the air pump 407 is started to draw gas into the inside of the connecting rod 406, wherein, in combination withFigure 5 and Figure 6 As shown in FIG. 6, two cylindrical grooves are opened in the connecting rod 406 near the two ends, which is to limit the two sliding plugs 409. When the air pump 407 enters the two cylindrical grooves through the two ends of the communication pipe 408 and extracts the gas inside, the two sliding plugs 409 are moved in the direction of the communication pipe 408 under the action of pressure difference, and then the two receiving heads 411 are moved downward, and the two bearing plates 402 are tilted downward, and then the controller 2 starts the servo motor 405 to drive the connecting rod 406 to rotate, and then the two receiving heads 411 are rotated, until the connecting rod 406 is parallel to the bottom of the partition plate 401, that is, the support of the two receiving heads 411 to the two bearing plates 402 is removed, and the two bearing plates 402 are rotated downward along the corresponding sealing hinges under the action of their own gravity, as shown in FIG. 7. Figure 5 As shown in FIG. 8, the two sealing rings 403 ensure the sealing of the top of the bearing plate 402 during contact with the inner wall of the mixing bin 305, preventing the material stored on the top of the bearing plate 402 from falling downward and affecting the detection result of the pressure sensor 404. The pressure sensor 404 is based on force conversion and signal processing, and the core is to transfer the weight of the material to the sensor through mechanical structure, and then the sensor converts the mechanical signal into measurable electrical signal, and finally the weight of the material is obtained through calculation. It is a mature technology, and will not be described in detail here. At this time, the powder and granular materials will enter the bottom of the mixing bin 305 respectively.

[0037] As shown in FIG. 9, Figures 1-3 and Figures 7-10The invention provides an accurate metering and feeding device for extruded sheet production, which comprises a base plate 1, a controller 2 arranged on the top of the base plate 1 near the rear surface, a conveying assembly 3 arranged on the top of the base plate 1 near the center for conveying powder and granular raw materials, a quantitative assembly 4 arranged inside the conveying assembly 3 for accurate metering, a uniform mixing assembly 5 arranged on the top of the base plate 1 near one side edge for fully mixing the materials, the uniform mixing assembly 5 comprising a conical mixing bin 501, an inner tooth ring 506 fixedly installed inside the conical mixing bin 501 near the bottom, a plurality of pinions 508 meshingly connected inside the inner tooth ring 506, a plurality of stirring rods 509 fixedly installed on the outer surfaces of the plurality of pinions 508, a driving rod 503 arranged between the outer surfaces of the plurality of stirring rods 509, the driving rod 503 driving the plurality of stirring rods 509 to revolve while the plurality of pinions 508 also rotate under the driving action of the inner tooth ring 506, so that the plurality of stirring rods 509 revolve and rotate at the same time to uniformly stir and mix the powder and granular materials in the conical mixing bin 501, the uniform mixing assembly 5 further comprising a driving motor 502, a plurality of stirring frames 507 uniformly fixedly installed on the outer surface of the driving rod 503, a fixed ring 504 fixedly installed on the inner wall of the conical mixing bin 501 near the bottom, two support rods 505 slidingly connected inside the fixed ring 504, a circulating pump 510 fixedly installed on the outer surface of the conical mixing bin 501 through an auxiliary block, an air outlet pipe 511 fixedly communicated with the air outlet end of the circulating pump 510, an air inlet pipe 512 fixedly communicated with the air inlet end of the circulating pump 510, the air outlet end of the circulating pump 510 fixedly communicated with the air inlet pipe 512, a stepping motor 513 fixedly installed on the outer surface of the conical mixing bin 501 near the bottom through screws, a sealing baffle 514 fixedly installed on the output end of the stepping motor 513, a leakage hole cover 515 fixedly installed on the inner wall of the conical mixing bin 501 near the bottom, the outer surface of the driving motor 502 fixedly connected with the outer surface of the conical mixing bin 501 through screws, the output end of the driving motor 502 fixedly connected with the top end of the driving rod 503, one end of each of the two support rods 505 fixedly connected with the outer surface of the driving rod 503, the outer surfaces of the plurality of stirring rods 509 respectively rotationally connected with the inner walls of the plurality of stirring frames 507, the top end of the air outlet pipe 511 fixedly penetrated into the inside of the conical mixing bin 501, the bottom end of the air inlet pipe 512 fixedly penetrated into the inside of the conical mixing bin 501, the sealing baffle 514 arranged inside the conical mixing bin 501, both ends of the sealing baffle 514 respectively movably penetrated into the opposite outer parts of the conical mixing bin 501, and the outer surface of the conical mixing bin 501 fixedly connected with the top of the base plate 1 through an auxiliary frame.

[0038] In this embodiment, then the controller 2 can be opened by the electric valve 314, so that the mixed powder and granular raw materials through the pipe 313 into the inside of the conical mixing bin 501, and then the controller 2 starts the drive motor 502, driving the rotation of the rod 503, wherein the sliding connection between the two support rods 505 and the fixed ring 504, to ensure the stability of the drive rod 503, the drive rod 503 drive multiple stirring frame 507 rotation, in turn drive multiple stirring rod 509 rotation, multiple stirring rod 509 rotation respectively drive multiple pinion 508 rotation, because the inner tooth ring 506 is fixed, multiple pinion 508 with stirring frame 507 rotation in the process, also in the driving action of the inner tooth ring 506, in turn, drive multiple stirring rod 509 with the revolution of the stirring frame 507 also rotate, realize the uniform mixing of the powder and granular material in the conical mixing bin 501, revolution drive multiple stirring rod 509 around the center of the conical mixing bin 501 rotation, so that the overall material does circular convection, cover the macro range, multiple stirring rod 509 rotation makes itself high speed rotation, generate local shear force and radial disturbance, the material is scattered and pushed to the center, at the same time, let the powder fully permeate in the gap between the particles, through the combination of revolution and rotation to form the global circulation and local crushing of three-dimensional mixing, improve the stirring efficiency, also make the material stirring more uniform, and reduce the dispersion of agglomeration and reunion, solve the problem of the existing technology in the production process of the extruded board due to the large difference between the powder and granular production raw materials, which is difficult to mix uniformly, affecting the uniformity of the later extruded board foaming.

[0039] As shown in Figure 1 and 7 - Figure 10 A kind of precise metering feeding device for extruded board production, including bottom plate 1, the top of bottom plate 1 is close to the rear surface and is provided with controller 2, the top of bottom plate 1 is close to the center and is provided with conveying assembly 3 for conveying powder and granular raw materials, the inside of conveying assembly 3 is provided with quantitative assembly 4 for accurate quantification, the top of bottom plate 1 is close to one side edge and is provided with uniform mixing assembly 5 for fully mixing material, uniform mixing assembly 5 includes conical mixing bin 501, conical mixing bin 501 is fixedly installed with inner tooth ring 506 inside close to bottom, inner tooth ring 506 is engaged with multiple pinion 508 inside, the outer surface of multiple pinion 508 is fixedly installed with stirring rod 509, driving rod 503 is arranged between the outer surfaces of multiple stirring rod 509, driving rod 503 drives multiple stirring rod 509 revolution at the same time, multiple pinion 508 also rotates under the driving action of inner tooth ring 506, so that multiple stirring rod 509 revolution at the same time and rotate to uniformly mix the powder and granular material in conical mixing bin 501.

[0040] In this embodiment, in order to further improve the uniformity of the mixing of the two materials during the mixing of the materials in the conical mixing bin 501, the circulating pump 510 is started, and the air inlet pipe 512 extracts gas into the conical mixing bin 501. As shown in Figure 8 The material is effectively prevented from entering the inside of the air inlet pipe 512 by the action of the leakage hole cover 515. After the gas enters the air inlet pipe 512, it is backflowed into the inside of the conical mixing bin 501 through the air outlet pipe 511. Such circulation relies on low wind speed and low pressure difference. The purpose is to promote material dispersion by using air flow disturbance, so that the powder flows in the gap between the particles and breaks the local agglomeration. The air flow only circulates in a closed loop in the bin, and the air is sprayed from the top of the conical mixing bin 501, passes through the material layer, is sucked through the air inlet pipe 512, and is backflowed into the conical mixing bin 501 through the air outlet pipe 511. This makes the powdery material more uniformly distributed in the mixing system, further improves the uniformity of the mixing of the powdery material and the granular material, provides protection for subsequent production and processing of the extruded sheet, and reduces production failures.

[0041] The method for using the device and the working principle are as follows: in the production and processing of the extruded sheet, firstly, the granular material is put into the inside of the feeding hopper 302, then the powdery material is put into the inside of the storage bin 306, and the controller 2 is started to drive the direct current motor 303 to rotate the spiral blade 304, with the rotation of the spiral blade 304, the granular material in the feeding hopper 302 is transported to the end close to the direct current motor 303, and enters the inside of the mixing bin 305 through the discharge port arranged at the bottom of the shell 301, and is on one side of the partition plate 401 and on the top of the corresponding bearing plate 402, then the controller 2 is started to drive the pneumatic conveying pump 307 to draw the powdery raw material into the inside of the storage bin 306 through the conveying pipe 308, the raw material enters the inside of the connecting pipe 309 through the conveying pipe 308, and finally is transported into the inside of the mixing bin 305 and is on the other side of the partition plate 401 and on the top of the other corresponding bearing plate 402, at the same time, the two pressure sensors 404 detect the weights of the powdery material and the granular material respectively, when the weights reach the required values, the controller 2 is started to close the direct current motor 303 and the pneumatic conveying pump 307 respectively, and the two electromagnetic valves 312 are opened respectively to make the powdery material and the granular material in the two trace storage bins 310 enter the inside of the mixing bin 305 through the two conveying pipes 311 respectively, until the pressure values displayed by the two pressure sensors 404 reach the required values, the two electromagnetic valves 312 are closed through the controller 2, so that the precise metering feeding device for extruded sheet production can accurately measure the weights of the components in the raw material, when the pressure values displayed by the two pressure sensors 404 reach the required values, firstly, the air pump 407 is started to draw air into the inside of the connecting rod 406, when the air pump 407 draws air into the inside of the two cylindrical grooves through the two ends of the communication pipe 408, the two sliding plugs 409 move to the direction of the communication pipe 408 under the action of the pressure difference, the two receiving heads 411 move downward, the two bearing plates 402 are inclined downward, then the controller 2 is started to drive the servo motor 405 to rotate the connecting rod 406, the rotation of the connecting rod 406 drives the two receiving heads 411 to rotate, until the connecting rod 406 rotates to the position parallel to the bottom of the partition plate 401, the support of the two receiving heads 411 on the two bearing plates 402 is released, and the two bearing plates 402 rotate downward along the corresponding sealing hinges under the action of their own gravity, like Figure 5As shown, by the action of the two sealing rings 403, the two bearing plates 402 ensure the sealing of the top of the bearing plate 402 during contact with the inner wall of the mixing bin 305, at this time, the powder raw material and the granular raw material will enter the bottom of the mixing bin 305 respectively, then the controller 2 opens the electric valve 314, so that the mixed powder and granular raw materials enter the inside of the conical mixing bin 501 through the pipe 313, then the controller 2 starts the drive motor 502, drives the drive rod 503 to rotate, drives the plurality of stirring frames 507 to rotate, and then drives the plurality of stirring rods 509 to rotate, the plurality of stirring rods 509 rotate at the same time respectively drive the plurality of pinions 508 to rotate, since the inner tooth ring 506 is fixed, the plurality of pinions 508 rotate during the rotation of the stirring frame 507, and also rotate under the driving action of the inner tooth ring 506, thereby driving the plurality of stirring rods 509 to rotate around the center of the conical mixing bin 501 while revolving with the stirring frame 507, so that the whole material does circular convection, covers a macroscopic range, the plurality of stirring rods 509 rotate at high speed, generate local shear force and radial disturbance, disperse the accumulated material and push it to the center, and then start the circulating pump 510, the inlet pipe 512 extracts gas from the conical mixing bin 501, the gas enters the inlet pipe 512 and then flows back to the inside of the conical mixing bin 501 through the outlet pipe 511, so as to circulate, rely on low wind speed and low pressure difference, so that the powder flows in the gap between the particles, breaks the local agglomeration, the airflow only circulates in the bin, sprays from the top of the conical mixing bin 501, passes through the material layer, absorbs air through the inlet pipe 512, and flows back to the conical mixing bin 501 through the outlet pipe 511, so that the powder material is more evenly distributed in the mixing system.

[0042] The wiring diagram of the controller 2, the DC motor 303, the pneumatic conveying pump 307, the electromagnetic valve 312, the electric valve 314, the pressure sensor 404, the servo motor 405, the air pump 407, the drive motor 502, the circulating pump 510 and the stepping motor 513 in the application belong to the common knowledge in the art, and the working principle is a known technology, and the model is selected according to the actual use. Therefore, the control mode and wiring arrangement of the controller 2, the DC motor 303, the pneumatic conveying pump 307, the electromagnetic valve 312, the electric valve 314, the pressure sensor 404, the servo motor 405, the air pump 407, the drive motor 502, the circulating pump 510 and the stepping motor 513 will not be explained in detail.

[0043] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A precision metering and feeding device for extruded polystyrene (XPS) board production, comprising a base plate (1), a controller (2) disposed on the top of the base plate (1) near its rear surface, a conveying assembly (3) for conveying powder and granular raw materials disposed on the top of the base plate (1) near its center, and a metering assembly (4) for precise metering disposed inside the conveying assembly (3), characterized in that: The top of the bottom plate (1) is provided with a uniform mixing assembly (5) near one side edge for fully mixing materials, the uniform mixing assembly (5) comprises a conical mixing bin (501), an inner tooth ring (506) is fixedly installed at the inner portion of the conical mixing bin (501) near the bottom, a plurality of pinions (508) are engagedly connected at the inner portion of the inner tooth ring (506), a plurality of stirring rods (509) are fixedly installed on the outer surfaces of the plurality of pinions (508), a drive rod (503) is arranged between the outer surfaces of the plurality of stirring rods (509), the drive rod (503) drives the plurality of stirring rods (509) to revolve, and the plurality of pinions (508) also rotate under the driving action of the inner tooth ring (506), so that the plurality of stirring rods (509) revolve and rotate to uniformly stir and mix the powdery and granular materials in the conical mixing bin (501).

2. The precise metering and feeding device for the production of extruded sheets according to claim 1, characterized in that: The uniform mixing assembly (5) further comprises a driving motor (502), a plurality of stirring frames (507) are uniformly fixedly installed on the outer surface of the drive rod (503), a fixed ring (504) is fixedly installed at the inner wall of the conical mixing bin (501) near the bottom, two support rods (505) are slidingly connected at the inner portion of the fixed ring (504), and a circulating pump (510) is fixedly installed on the outer surface of the conical mixing bin (501) through an auxiliary block.

3. The precise metering and feeding device for the production of extruded sheets according to claim 2, characterized in that: An air outlet pipe (511) is fixedly communicated with the air outlet end of the circulating pump (510), an air inlet pipe (512) is fixedly communicated with the air inlet end of the circulating pump (510), the air outlet end of the circulating pump (510) is fixedly communicated with the air inlet pipe (512), a stepping motor (513) is fixedly installed on the outer surface of the conical mixing bin (501) near the bottom through screws, a sealing baffle (514) is fixedly installed on the output end of the stepping motor (513), and a leakage hole cover (515) is fixed at the inner wall of the conical mixing bin (501) near the bottom.

4. The precise metering and feeding device for the production of extruded sheets according to claim 3, characterized in that: The outer surface of the driving motor (502) is fixedly connected with the outer surface of the conical mixing bin (501) through screws, the output end of the driving motor (502) is fixedly connected with the top end of the drive rod (503), one end of each of the two support rods (505) is fixedly connected with the outer surface of the drive rod (503), and the outer surfaces of the plurality of stirring rods (509) are respectively rotationally connected with the inner walls of the plurality of stirring frames (507).

5. The precise metering and feeding device for the production of extruded sheets according to claim 4, characterized in that: The top end of the air outlet pipe (511) is fixedly penetrated into the inner portion of the conical mixing bin (501), the bottom end of the air inlet pipe (512) is fixedly penetrated into the inner portion of the conical mixing bin (501), the sealing baffle (514) is arranged in the inner portion of the conical mixing bin (501), both ends of the sealing baffle (514) are movably penetrated into the opposite outer portions of the conical mixing bin (501), and the outer surface of the conical mixing bin (501) is fixedly connected with the top of the bottom plate (1) through an auxiliary frame.

6. The precise metering and feeding device for the production of extruded sheets according to claim 5, characterized in that: The conveying assembly (3) includes a shell (301), the bottom of the shell (301) is fixedly connected with the top of the bottom plate (1), the top of the shell (301) is fixedly communicated with a feeding hopper (302) near one end, the outer surface of the shell (301) is fixedly installed with a DC motor (303) through screws, the output end of the DC motor (303) is fixedly connected with a spiral blade (304), and the two ends of the spiral blade (304) are respectively movably penetrated into the opposite outer parts of the shell (301).

7. The precise metering and feeding device for the production of extruded sheets according to claim 6, characterized in that: The discharge end of the shell (301) is fixedly communicated with a mixing bin (305) through screws, the top of the bottom plate (1) is fixedly installed with a storage bin (306) near the other side edge through an auxiliary frame, the top of the bottom plate (1) is fixedly installed with a pneumatic conveying pump (307) through screws, the input end of the pneumatic conveying pump (307) is fixedly communicated with a conveying pipe (308), the top end of the conveying pipe (308) is fixedly penetrated into the inside of the storage bin (306), and the output end of the pneumatic conveying pump (307) is fixedly communicated with a connecting pipe (309).

8. The precise metering and feeding device for the production of extruded sheets according to claim 7, characterized in that: The top end of the connecting pipe (309) is fixedly penetrated into the inside of the mixing bin (305), the outer surface of the mixing bin (305) is fixedly communicated with two lead pipes (311) near the top, the outer surfaces of the two lead pipes (311) are provided with electromagnetic valves (312), the top ends of the two lead pipes (311) are fixedly communicated with trace storage bins (310), the bottom of the mixing bin (305) is fixedly communicated with a material pipe (313), the outer surface of the material pipe (313) is provided with an electric valve (314), and the bottom end of the material pipe (313) is fixedly penetrated into the inside of the conical mixing bin (501).

9. The precise metering and feeding device for the production of extruded sheets according to claim 8, characterized in that: The quantitative assembly (4) includes a partition plate (401), the outer surface of the partition plate (401) is fixedly connected with the inner wall of the mixing bin (305), the bottom of the partition plate (401) is rotatably connected with a bearing plate (402) near the two side edges through a sealing hinge, the outer surfaces of the two bearing plates (402) are coupled with sealing rings (403), the bottoms of the two bearing plates (402) are provided with pressure sensors (404), the bottom of the partition plate (401) is fixedly installed with a servo motor (405) through screws, and the output end of the servo motor (405) is fixedly connected with a connecting rod (406).

10. The precise metering and feeding device for the production of extruded sheets according to claim 9, characterized in that: The bottom of the connecting rod (406) is fixedly installed with an air pump (407) through screws, the air outlet end of the air pump (407) is fixedly communicated with a communication pipe (408), the two ends of the communication pipe (408) are fixedly penetrated into the inside of the connecting rod (406), the inside of the connecting rod (406) is slidably connected with two sliding plugs (409), the outer surfaces of the two sliding plugs (409) are fixedly installed with push rods (410), one end of each of the two push rods (410) is movably penetrated into the outside of the connecting rod (406), and one end of each of the two push rods (410) is fixedly installed with a receiving head (411).

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