A material proportioning device for a continuous mixer group

Abstract

The application relates to the technical field of internal mixers, in particular to a material proportioning device for a continuous internal mixer unit, which comprises a mixing barrel, a plurality of proportioning boxes are fixedly supported on the mixing barrel through a plurality of material guide pipes, the lower end pipe orifices of the material guide pipes are inserted into the mixing barrel, a flow meter is installed on each flow control pipe, a supporting disc is arranged in the mixing barrel, a flow interception mechanism is arranged on the supporting disc, the flow interception mechanism is used for intercepting the material guided into the mixing barrel by the material guide pipes, and a feeding hopper of the internal mixer unit is communicated with the mixing barrel through a flow guide pipe; the application can control the flow amount of the material in the material guide pipe, and can also prevent the material from intermittently flowing in the material guide pipe, so that the intermittent phenomenon of the internal mixer in the material compounding process is avoided, and the efficiency of the continuous material compounding of the internal mixer unit is improved.

Description

Technical Field

[0001] This invention relates to the field of internal mixer technology, specifically to a material proportioning device for continuous internal mixer units. Background Technology

[0002] A closed-type rubber mixing mill, also known as an internal mixer or kneader, is mainly used for the plasticizing and mixing of rubber. An internal mixer is a machine with a pair of rotors of a specific shape that rotate relative to each other, which intermittently plasticizes and mixes polymer materials in a closed state with adjustable temperature and pressure. It mainly consists of a mixing chamber, rotors, rotor sealing device, feeding and pressing device, unloading device, transmission device and machine base.

[0003] When internal mixers are used to mix materials, they usually need to mix multiple materials in proportion before feeding them into the hopper and sealing it. Since internal mixers need to continuously mix materials, if the material proportioning stage is carried out by weighing, the materials need to be placed on the weighing tray first, and then fed into the feeding head after the material reaches the rated weight. This method of material distribution can easily result in the material falling intermittently into the feeding hopper, which can prevent the internal mixer from continuously mixing the materials, thus affecting the efficiency and quality of the internal mixer. Summary of the Invention

[0004] The purpose of this invention is to provide a material proportioning device for a continuous internal mixer unit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a material proportioning device for a continuous internal mixer unit, comprising a mixing tank, multiple batching boxes being fixedly supported above the mixing tank by multiple guide pipes, the lower ends of the multiple guide pipes being inserted into the mixing tank, a flow meter being installed on each control pipe, a support plate being provided inside the mixing tank, and a flow-cutting mechanism being provided on the support plate, the flow-cutting mechanism being used to cut off the material introduced into the mixing tank by the multiple guide pipes, and the lower part of the mixing tank being connected to the feeding hopper of the internal mixer unit through a guide pipe.

[0006] Furthermore, the flow-stopping mechanism includes a flow control tube, an elastic hose, a squeeze ball, a push block, a connecting block, an arc-shaped squeeze block, an arc-shaped push block, and a push cylinder; the support plate has multiple connecting holes arranged in a circumferential array, with a guide tube inserted into the upper opening of each connecting hole and a flow control tube inserted into the lower opening of each connecting hole; the elastic hose is disposed within the connecting holes, with its two ends connected to the openings of the guide tube and the flow control tube, respectively; the support plate has multiple push grooves arranged in a circumferential array inside, each push groove being connected to the inner side of each connecting hole, and a squeeze ball is slidably disposed within each push groove. Each of the extrusion balls has a push block fixed on its side near the center of the support plate, and each push block is slidably disposed in each push groove; each push block is slidably disposed at the upper opening of the push groove, and each connecting block is fixedly connected to the upper surface of the push block; a plurality of arc-shaped extrusion blocks are slidably disposed in a circumferential array on the upper surface of the support plate, and each arc-shaped extrusion block is connected to each connecting block; a plurality of push cylinders are arranged in a circumferential array at the center of the upper surface of the support plate, and an arc-shaped push block is connected to the piston rod end face of each push cylinder, and the arc surface of each arc-shaped push block corresponds to the outer arc of each arc-shaped extrusion block.

[0007] Furthermore, a material stirring mechanism is provided inside the mixing tank. The material stirring mechanism includes a stirring shaft and stirring rods. The stirring shaft rotates through the disc and inserts into the mixing tank. Multiple stirring rods of different lengths are arranged in a circumferential array on the stirring shaft located inside the mixing tank. The top surface of the stirring shaft is connected to the output shaft of a servo motor fixed to the upper end cover of the mixing tank.

[0008] Furthermore, the support plate is provided with a connecting rotating assembly, which includes a rotating disk, a support ear plate, a pushing cylinder, a plug-in post, and a limiting spring. The rotating disk is non-contactly sleeved on the outer ring surface of the stirring shaft, and multiple pushing cylinders are fixed in a circumferential array inside the rotating disk. At least four plug-in holes are opened in a circumferential array on the upper surface of the rotating disk. The support ear plate is fixedly sleeved on the stirring shaft, and a pushing cylinder is vertically fixed on both sides of the support ear plate. Each plug-in post is fixedly connected to the piston rod end face of the vertically fixed pushing cylinder, and the plug-in post is rotatably aligned with the plug-in hole. A limiting spring is horizontally provided at the upper groove opening of each pushing groove. One end face of the limiting spring is connected to the groove wall of the pushing groove, and the other end face of the limiting spring is connected to the side of the block.

[0009] Furthermore, the length of the elastic hose is greater than the diameter of the compression ball, and the diameter of the compression ball is equal to the inner diameter of the elastic hose.

[0010] Furthermore, at least two pushing cylinders are fixed on the lower surface of the support plate, and a drive gear is provided below the support plate. The drive gear is slidably sleeved on the stirring shaft through the cooperation of a keyway and a key block. The upper surface of the drive gear is connected to the piston rod end face of the two pushing cylinders through a rotating ring. Rotary gears are fixedly sleeved on the outer ring surface of multiple flow control tubes. Multiple rotating gears slide and mesh with the drive gear for transmission. Each flow control tube is rotatably disposed in a connecting hole. The upper end of the elastic hose is rotatably connected to the guide tube, and the lower end of the elastic hose is fixedly connected to the flow control tube.

[0011] Furthermore, each of the ingredient boxes has an injection pipe connected to its upper surface, and the support plate is sealed to the inner wall of the mixing tank.

[0012] Furthermore, the extrusion ball is made of hard rubber material, and the outer wall of the extrusion ball has a rough surface.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a flow-stopping mechanism within the mixing cylinder. This mechanism, in conjunction with a sliding extrusion ball and an elastic hose, adjusts the degree of arc-shaped indentation of the elastic hose within the connecting hole based on the distance the extrusion ball slides within the pushing groove. This alters the inner diameter of the elastic hose, thereby controlling the amount of material flowing through the feed pipe and preventing intermittent material flow within the feed pipe. Consequently, it avoids intermittent mixing during the internal mixing process, thus improving the efficiency of continuous internal mixing of materials.

[0014] 2. This invention uses a connecting rotating assembly on the upper surface of a support plate to fix multiple push cylinders on a rotating disk. Pushing the piston rod of the cylinder extends the piston rod, which drives the insertion pin to be inserted into the insertion hole on the rotating disk. The stirring shaft drives the rotating disk to rotate, which causes the arc-shaped push block on the piston rod end face of the push cylinder to continuously squeeze and detach from the arc-shaped extrusion block. This causes the extrusion ball to continuously vibrate and detach from the wall of the elastic hose, thereby vibrating and cleaning the material adhering to the inner wall of the elastic hose. This prevents the flowing slurry or liquid material from adhering to the hose wall when the elastic hose wall forms an arc-shaped depression, thus preventing blockage when the material flows through the elastic hose. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the present invention; Figure 3 This is a cross-sectional view of the support disk of the present invention; Figure 4 This is a schematic diagram of the internal structure of the support disk of the present invention; Figure 5 This is a schematic diagram of the interception mechanism of the present invention.

[0016] In the diagram: 1. Mixing tank; 2. Batching box; 3. Guide pipe; 4. Support plate; 41. Connecting hole; 42. Pushing groove; 5. Flow interception mechanism; 51. Flow control pipe; 52. Elastic hose; 53. Extrusion ball; 54. Pushing block; 55. Connecting block; 56. Arc-shaped extrusion block; 57. Arc-shaped top push block; 58. Top push cylinder; 6. Material mixing mechanism; 61. Mixing shaft; 611. Keyway; 62. Mixing rod; 7. Connecting rotating assembly; 71. Rotary disk; 711. Insertion hole; 72. Support ear plate; 73. Pushing cylinder; 74. Insertion column; 75. Limiting spring; 8. Drive gear; 9. Key block; 10. Rotary gear; 11. Injection pipe. Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 5 As shown, the present invention provides a material proportioning device for a continuous internal mixer unit: it includes a mixing tank 1, and multiple batching boxes 2 are fixedly supported on the top of the mixing tank 1 by multiple guide pipes 3. The lower ends of the multiple guide pipes 3 are inserted into the mixing tank 1. A support plate 4 is provided inside the mixing tank 1, and a flow-cutting mechanism 5 is provided on the support plate 4. The flow-cutting mechanism 5 is used to cut off the material introduced into the mixing tank 1 by the multiple guide pipes 3. The bottom of the mixing tank 1 is connected to the feeding hopper of the internal mixer unit through a guide pipe. In the design scheme of this invention, a flow-stopping mechanism 5 is installed inside the mixing tank 1. When the internal mixing unit needs to internally mix the materials, the raw materials in multiple batching boxes 2 are introduced into the mixing tank 1 through multiple guide pipes 3. At this time, the flow meter installed on each flow control pipe 51 measures the material introduced into the mixing tank 1 through the guide pipe 3. When it is necessary to control the flow rate of the material introduced into the mixing tank 1 through one or more guide pipes 3, the control system on the sealing unit will control one or more flow-stopping mechanisms 5 on the support plate 4 to work, so that the flow-stopping mechanism 5 can control the diameter of the guide pipe 3. The flow rate is reduced by narrowing the pipe diameter, which allows for the interception of material flowing through the feed pipe 3. At this time, the corresponding flow meter will measure that the material flow rate through the reduced feed pipe 3 will decrease, thereby reducing the amount of material in the corresponding batching box 2 entering the mixing tank 1. This allows for the control of the amount of material in each batching box 2 fed into the mixing tank 1, enabling the proportioning of multiple materials without causing the proportioned materials to enter the feeding hopper intermittently. Consequently, the internal mixing process will not be interrupted, thus improving the efficiency of the internal mixing unit in continuous internal mixing of materials.

[0019] In one embodiment of the present invention, the flow-stopping mechanism 5 includes a flow control pipe 51, an elastic hose 52, a squeezing ball 53, a pushing block 54, a connecting block 55, an arc-shaped squeezing block 56, an arc-shaped pushing block 57, and a pushing cylinder 58; the support plate 4 has a plurality of connecting holes 41 arranged in a circumferential array, a guide pipe 3 is inserted into the upper opening of each connecting hole 41, and a flow control pipe 51 is inserted into the lower opening of each connecting hole 41; a flow meter is installed on each flow control pipe 51, and the two ends of each elastic hose 52 are respectively connected to the openings of the guide pipe 3 and the flow control pipe 51; the support plate 4 has a plurality of pushing grooves 42 arranged in a circumferential array inside, and each pushing groove 42 is respectively connected to the inner side of each connecting hole 41. Each of the 42 pushers has a slidably arranged extrusion ball 53; each extrusion ball 53 has a pusher block 54 fixed on its side near the center of the support plate 4, and each pusher block 54 is slidably arranged in each pusher groove 42; each pusher block 55 is fixedly connected to the upper surface of the pusher block 54 and is slidably arranged at the upper opening of the pusher groove 42; a plurality of arc-shaped extrusion blocks 56 are slidably arranged in a circumferential array on the upper surface of the support plate 4, and each arc-shaped extrusion block 56 is connected to each connecting block 55; a plurality of pusher cylinders 58 are arranged in a circumferential array at the center of the upper surface of the support plate 4, and an arc-shaped pusher block 57 is connected to the piston rod end face of each pusher cylinder 58, and the arc surface of each arc-shaped pusher block 57 corresponds to the outer arc of each arc-shaped extrusion block 56; In the design of this invention, when it is necessary to cut off the flow in the guide pipe 3, the piston rod of the corresponding push cylinder 58 is extended, causing the arc-shaped push block 57 to push the corresponding arc-shaped extrusion block 56. At this time, the arc-shaped extrusion block 56 will move towards the side of the guide pipe 3, and the connecting block 55 will drive the extrusion ball 53 to slide towards the side of the elastic hose 52 in the push groove 42 through the push block 54. Therefore, as the piston rod of the push cylinder 58 continues to extend, the arc-shaped extrusion block 56 will be driven by the connecting block 55 and the push block 54. The extrusion ball 53 continuously compresses the wall of the elastic hose 52, causing the wall of the elastic hose 52 to curve and concave under the push of the extrusion ball 53, thus reducing the diameter of the elastic hose 52. This reduces the amount of material entering the control tube 51 through the reduced-diameter elastic hose 52 into the control tube 51. At this time, the flow meter on the control tube 51 can measure the reduced material volume, and it will not cause intermittent flow of material in the guide tube 3. Meanwhile, the other elastic hoses 52 whose inner diameter has not been reduced will affect the material flow. Normally, the material is introduced into the mixing tank 1 through the flow control pipe 51. When it is necessary to restore the diameter of the elastic hose 52, the piston rod of the corresponding push cylinder 58 is controlled to retract, causing the arc-shaped push block 57 to disengage from the arc-shaped extrusion block 56. Then, the elastic hose 52, under its own elastic restoring force, pushes the extrusion ball 53 to slide towards the axis of the support plate 4 within the push groove 42, thereby restoring the diameter of the elastic hose 52. This increases the discharge rate of the material, allowing adjustment of the material ratio entering the mixing tank 1. This invention can adjust the material ratio based on the pushing force of the extrusion ball 53. The sliding distance within the groove 42 is used to adjust the size of the arc-shaped indentation of the elastic hose 52 within the connecting hole 41, thereby changing the inner diameter of the elastic hose 52 and controlling the amount of material flowing in the feed pipe 3. If a valve is installed on the feed pipe 3 to cut off the flow, the valve core will be inside the feed pipe 3 after adjustment. If the feed pipe 3 is filled with liquid or slurry material, the flowing material will impact and adhere to the valve core, which may cause the valve core to block the feed pipe 3 after long-term use, thus affecting the accurate proportioning of different materials in the feed pipe 3.

[0020] In one embodiment of the present invention, a material stirring mechanism 6 is provided inside the mixing tank 1. The material stirring mechanism 6 includes a stirring shaft 61 and stirring rods 62. The stirring shaft 61 rotates through a disc and inserts into the mixing tank 1. Multiple stirring rods 62 of different lengths are arranged in a circumferential array on the stirring shaft 61 located inside the mixing tank 1. The top surface of the stirring shaft 61 is connected to the output shaft of a servo motor fixed to the upper end cover of the mixing tank 1. In the scheme designed by the present invention, after multiple flow control tubes 51 introduce multiple materials into the mixing tank 1, in order to facilitate the full mixing of multiple materials before entering the feeding hopper, the servo motor fixed to the upper end cover of the mixing tank 1 can be controlled to work, so that it drives the stirring shaft 61 to rotate through the output shaft. This allows multiple stirring rods 62 of different lengths to stir and mix the falling multiple materials in the mixing tank 1, so that the multiple materials can be added to the feeding hopper in a fully mixed state, and then continuously mixed by the internal mixer unit.

[0021] In one embodiment of the present invention, a connecting rotating assembly 7 is provided on the support disk 4. The connecting rotating assembly 7 includes a rotating disk 71, a support ear plate 72, a pushing cylinder 73, a plug-in post 74, and a limiting spring 75. The rotating disk 71 is non-contactly sleeved on the outer ring surface of the stirring shaft 61, and a plurality of pushing cylinders 58 are fixed in a circumferential array inside the rotating disk 71. At least four plug-in holes 711 are circumferentially arrayed on the upper surface of the rotating disk 71. The support ear plate 72 is fixedly sleeved on the stirring shaft 61, and a pushing cylinder 73 is vertically fixed on both sides of the support ear plate 72. Each plug-in post 74 is fixedly connected to the piston rod end face of the vertically fixed pushing cylinder 73, and the plug-in post 74 is rotatably aligned with the plug-in hole 711. A limiting spring 75 is horizontally provided at the upper groove opening of each pushing groove 42. One end face of the limiting spring 75 is connected to the groove wall of the pushing groove 42, and the other end face of the limiting spring 75 is connected to the side of the connecting block 55. In the design of this invention, to avoid material adhering to the inner wall of the curved concave elastic hose 52 and causing blockage, when it is necessary to remove the material adhering to the inner wall of the elastic hose 52, the feeding of material into the feed tube 3 is stopped. Then, the piston rods of the two push cylinders 73 on the support ear plate 72 are extended, causing the insertion post 74 to be inserted into the insertion hole 711 aligned with the upper surface of the rotating disk 71. Then, the piston rod of the push cylinder 58 fixed on the rotating disk 71 is extended a short distance, causing it to pass through the curved push block 57 and the curved... The shaped extrusion block 56, in conjunction with the extrusion ball 53, compresses the wall of the elastic hose 52. Meanwhile, the connecting block 55, sliding within the push groove 42, compresses the limiting spring 75, thus compressing it. This then controls the rotation of the stirring shaft 61, causing it to rotate via the support ear plate 72, push cylinder 73, and insertion post 74, which in turn rotates the rotating disk 71. The rotating disk 71 then drives multiple push cylinders 58 to rotate. The rotation of the push cylinders 58 causes the arc-shaped push block 57 to disengage from the arc-shaped extrusion block 56. At this point, the elastic restoring force of the limiting spring 75, through the connecting block 55, drives the extrusion... Ball 53 detaches from the wall of the elastic hose 52. Therefore, as the rotating disk 71 continues to rotate, the arc-shaped pushing block 57 on the piston rod end of the pushing cylinder 58 continuously pushes and detaches from the arc-shaped extrusion block 56. This causes the extrusion ball 53 to continuously vibrate and detach from the wall of the elastic hose 52, thereby clearing away material adhering to the inner wall of the elastic hose 52. This prevents the flowing slurry or liquid material from adhering to the hose wall when an arc-shaped depression forms, thus avoiding blockage when the material flows through the elastic hose 52. Simultaneously, it can also control… The piston rods of the multiple push cylinders 58 on the rotating disk 71 extend in succession, which in turn increases the distance between the multiple arc-shaped push blocks 57 and the outer ring surface of the rotating disk. As a result, when the arc-shaped extrusion block 56 is subjected to different extrusion forces from the arc-shaped push blocks 57, the distance that the extrusion ball 53 slides in the push groove 42 increases in succession. This allows the extrusion ball 53 to vibrate the elastic hose 52 at different frequencies, thereby further enhancing the vibration and removal effect of the material adhering to the inner wall of the elastic hose 52, and further reducing the risk of blockage when the material flows through the elastic hose 52.

[0022] In one embodiment of the present invention, the length of the elastic hose 52 is greater than the diameter of the extrusion ball 53, and the diameter of the extrusion ball 53 is equal to the inner diameter of the elastic hose 52. In the design of the present invention, the length of the elastic hose 52 is greater than the diameter of the extrusion ball 53, so that when the extrusion ball 53 is squeezed against the inner wall of the elastic hose 52, the non-contacting tube wall of the elastic hose 52 can be stretched in an arc shape, thereby preventing the elastic hose 52 from breaking at the connection between the flow control tube 51 and the guide tube 3. The diameter of the extrusion ball 53 is equal to the inner diameter of the elastic hose 52, which allows the extrusion ball 53 to push the tube wall that is in contact with the extrusion ball 53 to completely adhere to the other tube walls of the elastic hose 52, thereby achieving complete interception of the corresponding elastic hose 52. This prevents the material in the corresponding batching box 2 from being added to the mixing tank 1, and allows the material to be added and proportioned according to the properties of the material to be mixed.

[0023] In one embodiment of the present invention, at least two pushing cylinders 73 are fixed on the lower surface of the support plate 4, and a drive gear 8 is provided below the support plate 4. The drive gear 8 is slidably sleeved on the stirring shaft 61 through the cooperation of the keyway 611 and the key block 9. The upper surface of the drive gear 8 is connected to the piston rod end face of the two pushing cylinders 73 through a rotating ring. The outer ring surface of the plurality of flow control tubes 51 is fixedly sleeved with rotating gears 10. The plurality of rotating gears 10 slide and mesh with the drive gear 8 for transmission. Each flow control tube 51 is rotatably arranged in the communicating hole 41. The upper end of the elastic hose 52 is rotatably connected to the guide tube 3, and the lower end of the elastic hose 52 is fixedly connected to the flow control tube 51. In the design of this invention, to avoid the extrusion ball 53 frequently extruding a single position of the elastic hose 52, causing breakage due to prolonged use, when material feeding is not required, the piston rod of the push cylinder 73 fixed to the lower surface of the support plate 4 can be controlled to retract, causing it to drive the drive gear 8 to slide upward along the stirring shaft 61 via the rotating ring. This allows the drive gear 8 to mesh with multiple rotating gears 10. When the stirring shaft 61 rotates, it drives the drive gear 8 to rotate through the cooperation of the keyway 611 and the key block 9. Since the flow control tube 51 is rotatably installed in the connecting hole 41, and the upper end face of the elastic hose 52 is rotatably connected to the guide tube 3, the rotation of the drive gear 8 will drive the flow control tube 51 to rotate through the meshing rotating gears 10. This allows the elastic hose 52 to rotate within the connecting hole 41, thereby adjusting the hose wall corresponding to the extrusion ball 53, ensuring that the extrusion ball 53 can effectively compress the elastic hose. The tube 52 is squeezed at different positions to create indentations. At the same time, when the squeezing ball 53 frequently slides in the pushing groove 42 to vibrate the inner wall of the elastic hose 52, the drive gear 8 and the rotating gear 10 can be controlled to mesh, so that the elastic hose 52 rotates in the connecting hole 41. This allows the squeezing ball 53 to vibrate the tube wall of the elastic hose 52 at different positions, thereby removing the material adhering to different positions on the tube wall of the elastic hose 52, and further reducing the probability of blockage when the material flows through the elastic hose 52. When the rotation of the elastic hose 52 is not required, the piston rod of the pushing cylinder 73 on the lower surface of the support plate 4 is controlled to extend, so that it drives the drive gear 8 to slide down along the stirring shaft 61 through the rotating ring. This disengages the drive gear 8 from the multiple rotating gears 10, so that when the stirring shaft 61 rotates, it only drives the drive gear 8 to rotate, and does not drive the elastic hose 52 to rotate through the flow control tube 51.

[0024] In one embodiment of the present invention, each of the ingredient boxes 2 is connected to an injection pipe 11 on its upper end face, and the support plate 4 is sealed to the inner wall of the mixing tank 1. In the design of the present invention, the injection pipe 11 facilitates the addition of materials to the ingredient box 2, while the support plate 4 is sealed to the mixing tank 1 to prevent the material being stirred in the mixing tank 1 from entering the space between the mixing tank 1 and the support plate 4, thereby affecting the interception mechanism 5 to properly intercept the material guided by the guide pipe 3.

[0025] In one embodiment of the present invention, the extrusion ball 53 is made of hard rubber material, and the outer wall of the extrusion ball 53 is rough. In the design of the present invention, the extrusion ball 53 is made of hard rubber material, and the outer spherical surface is rough, which can increase the frictional force in contact with the wall of the elastic hose 52, and prevent the extrusion ball 53 from detaching from the wall of the elastic hose 52 when the extrusion ball 53 extrudes and pushes the elastic hose 52, thereby affecting the accurate interception of the flowing material by the arc-shaped concave deformation of the elastic hose 52.

[0026] Working principle: When the internal mixer is needed to internally mix materials, the raw materials in multiple batching bins 2 are introduced into the mixing tank 1 through multiple feed pipes 3. At this time, the flow meter installed on each flow control pipe 51 measures the material introduced into the mixing tank 1 through the feed pipe 3. When it is necessary to control the flow rate of the material introduced into the mixing tank 1 through one or more feed pipes 3, the piston rod of the corresponding push cylinder 58 is extended, which drives the arc-shaped push block 57 to push the corresponding arc-shaped extrusion block 56. At this time, the arc-shaped extrusion block 56 moves to the side of the feed pipe 3, and the connecting block 55 drives the extrusion ball 53 to slide towards the side of the elastic hose 52 in the push groove 42 through the push block 54. Therefore, as the piston rod of the push cylinder 58 continues to extend, the arc-shaped extrusion block 56 drives the extrusion ball 53 to continuously extrude the wall of the elastic hose 52 through the connecting block 55 and the push block 54, so that the elastic hose 52 is compressed. The tube wall of tube 52 is curved and recessed into the position between the flow control tube 51 and the guide tube 3 under the push of the extrusion ball 53, thereby reducing the diameter of the flexible tube 52. This reduces the amount of material entering the flow control tube 51 through the reduced-diameter flexible tube 52 in the guide tube 3. At this time, the flow meter on the flow control tube 51 can measure the reduced material, and it will not cause the material to flow intermittently in the guide tube 3. Other flexible tubes 52 whose inner diameter has not been reduced will guide the material normally through the flow control tube 51 into the mixing tank 1. At this time, the servo motor fixed on the upper cover of the mixing tank 1 can be controlled to work, so that it drives the stirring shaft 61 to rotate through the output shaft. This allows multiple stirring rods 62 of different lengths to stir and mix the falling materials in the mixing tank 1, so that the materials can be added into the feeding hopper in a fully mixed state, and then continuously mixed by the internal mixer unit.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material proportioning device for a continuous internal mixer unit, comprising a mixing tank (1), characterized in that, Multiple batching boxes (2) are fixedly supported above the mixing tank (1) by multiple guide pipes (3). The lower ends of the multiple guide pipes (3) are inserted into the mixing tank (1). A support plate (4) is provided inside the mixing tank (1). A flow interception mechanism (5) is provided on the support plate (4). The flow interception mechanism (5) is used to intercept the material introduced into the mixing tank (1) by the multiple guide pipes (3). The bottom of the mixing tank (1) is connected to the feeding hopper of the internal mixer unit through a flow guide pipe. The flow interception mechanism (5) includes a flow control tube (51), an elastic hose (52), a squeeze ball (53), a push block (54), a connecting block (55), an arc-shaped squeeze block (56), an arc-shaped push block (57), and a push cylinder (58). The support plate (4) has a circumferential array of multiple connecting holes (41), and a guide tube (3) is inserted into the upper opening of each connecting hole (41). A flow control tube (51) is inserted into the lower opening of each connecting hole (41), and a flow meter is installed on each flow control tube (51). The flexible hose (52) is disposed in the connecting hole (41), and the two ends of each flexible hose (52) are respectively connected to the opening of the feed tube (3) and the flow control tube (51); The support plate (4) has multiple push grooves (42) arranged in a circular array inside the support plate (4). Each push groove (42) is connected to the inside of each connecting hole (41). Each push groove (42) has a slidably arranged extrusion ball (53). Pushing blocks (54) are fixed on the side of each extrusion ball (53) near the center of the support plate (4), and each pushing block (54) is slidably disposed in each pushing groove (42); The connecting block (55) is slidably disposed in the upper slot of the push groove (42), and each connecting block (55) is fixedly connected to the upper surface of the push block (54); Arc-shaped extrusion blocks (56), a plurality of arc-shaped extrusion blocks (56) are circumferentially arrayed and slidably disposed on the upper surface of the support disk (4), and each arc-shaped extrusion block (56) is connected to each connecting block (55); Arc-shaped push block (57) and push cylinder (58) are arranged in a circumferential array at the center of the upper surface of the support plate (4). The piston rod end face of each push cylinder (58) is connected to an arc-shaped push block (57). The arc surface of each arc-shaped push block (57) corresponds to the outer arc of each arc-shaped extrusion block (56).

2. The material proportioning device for a continuous internal mixer unit according to claim 1, characterized in that: The mixing tank (1) is equipped with a material stirring mechanism (6), which includes a stirring shaft (61) and stirring rods (62). The stirring shaft (61) rotates through the disc and is inserted into the mixing tank (1). Multiple stirring rods (62) of different lengths are arranged in a circular array on the stirring shaft (61) located in the mixing tank (1). The top surface of the stirring shaft (61) is connected to the output shaft of a servo motor fixed to the upper end cover of the mixing tank (1).

3. A material proportioning device for a continuous internal mixer unit according to claim 2, characterized in that: The support plate (4) is provided with a connecting rotation assembly (7), which includes a rotating plate (71), a support ear plate (72), a push cylinder (73), a plug-in post (74), and a limiting spring (75). A rotating disk (71) is non-contactly sleeved on the outer ring surface of the stirring shaft (61), and a plurality of push cylinders (58) are fixed in the inner circumferential array of the rotating disk (71). At least four insertion holes (711) are opened in the circumferential array on the upper surface of the rotating disk (71). Supporting ear plate (72) and pushing cylinder (73). The supporting ear plate (72) is fixedly sleeved on the stirring shaft (61), and the pushing cylinder (73) is vertically fixed on both sides of the supporting ear plate (72). Each of the plug-in pins (74) is fixedly connected to the piston rod end face of the vertically fixed push cylinder (73), and the plug-in pin (74) is rotatably aligned with the plug-in hole (711); A limiting spring (75) is horizontally provided at the upper opening of each of the pushing grooves (42). One end face of the limiting spring (75) is connected to the groove wall of the pushing groove (42), and the other end face of the limiting spring (75) is connected to the side of the connecting block (55).

4. A material proportioning device for a continuous internal mixer unit according to claim 1, characterized in that: The length of the flexible hose (52) is greater than the diameter of the extrusion ball (53), and the diameter of the extrusion ball (53) is equal to the inner diameter of the flexible hose (52).

5. A material proportioning device for a continuous internal mixer unit according to claim 2, characterized in that: At least two push cylinders (73) are fixed on the lower surface of the support plate (4). An active gear (8) is provided below the support plate (4). The active gear (8) is slidably sleeved on the stirring shaft (61) through the cooperation of the keyway (611) and the key block (9). The upper surface of the active gear (8) is connected to the piston rod end face of the two push cylinders (73) through a rotating ring. Rotary gears (10) are fixedly sleeved on the outer ring of the multiple flow control tubes (51). The multiple rotating gears (10) are slidably meshed with the active gear (8) for transmission. Each flow control tube (51) is rotatably set in the connecting hole (41). The upper end of the elastic hose (52) is rotatably connected to the guide tube (3), and the lower end of the elastic hose (52) is fixedly connected to the flow control tube (51).

6. A material proportioning device for a continuous internal mixer unit according to claim 1, characterized in that: Each of the ingredient boxes (2) has an injection pipe (11) connected to its upper end face, and the support plate (4) is sealed to the inner wall of the mixing tank (1).

7. A material proportioning device for a continuous internal mixer unit according to claim 1, characterized in that: The extrusion ball (53) is made of hard rubber material, and the outer wall of the extrusion ball (53) is rough.

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