Feeding mechanism for screw extruder

Abstract

The utility model relates to the field of engineering machinery, and discloses a feeding mechanism for a screw extruder, which comprises a bottom box and a shell, and a height adjusting mechanism is arranged at the top of the bottom box; the height adjusting mechanism comprises a stepping motor, a fixing frame and a hinge frame, the bottom wall of the stepping motor is fixedly connected into the bottom box, the output end of the stepping motor is fixedly connected with a flange rotator, the right end of the flange rotator is rotationally connected with a lead screw, and the right end of the fixing frame is rotationally connected into the fixing frame. According to the utility model, the height adjusting mechanism is arranged, so that the problems that the production efficiency is reduced and the cost is increased due to the limitation of the capability of the extruder to adapt to feed ports with different heights or different models can be solved, and the stepping motor is started through the control end, so that the feeding of the screw extruders with different heights can be effectively improved; and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a feeding mechanism for a screw extruder. Background Art

[0002] Screw extruder is a kind of equipment used for continuous extrusion molding, which is commonly used in plastic processing, food processing, chemical and pharmaceutical fields. The working principle of screw extruder is to feed the material into the spiral barrel by rotating the screw, and then extrude and process the material into the desired shape or form through the pressure and heat in the barrel. Specifically, the material is conveyed to the screw feed port, and as the screw rotates, the material is gradually squeezed toward the outlet of the spiral barrel, and finally extruded and formed through the outlet.

[0003] The existing feeding mechanisms for screw extruders are mainly divided into two types: screw conveyors and belt conveyors. The screw conveyor uses a rotating spiral structure to transport the raw materials from the feeding port to the feed port of the extruder. It is suitable for the transportation of various powdered, granular or block raw materials. The height of the existing screw conveyor is usually fixed, and it is impossible to adjust the height of the screw extruders of different heights to put the materials into the machine, which limits the ability of the extruder to adapt to feed ports of different heights or different models, which may lead to reduced production efficiency and increased costs. When pouring materials into the screw conveyor, the raw materials may generate dust, especially for some dry powdered raw materials, which makes it easier for dust to accumulate on the surface and surrounding areas of the equipment. On the existing dust removal device, when feeding, the internal materials cannot be stirred, which will cause the feed port to be blocked during use, and it is necessary to suspend work for cleaning, resulting in environmental pollution, and the inability to quickly improve work efficiency and waste a lot of time. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art. The utility model provides a feeding mechanism for a screw extruder, aiming to improve the prior art and solve the problem that the ability of the extruder to adapt to feed ports of different heights or different models is limited, which may lead to reduced production efficiency and increased costs. When feeding, the internal material cannot be stirred, and the feed port will be blocked during use, requiring work to be suspended for cleaning, resulting in environmental pollution, and the inability to quickly improve work efficiency and waste a lot of time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding mechanism for a screw extruder, comprising a bottom box and a shell, wherein a height adjustment mechanism is arranged on the top of the bottom box;

[0006] The height adjustment mechanism comprises: a stepper motor, a fixed frame and an articulated frame, the bottom wall of the stepper motor is fixedly connected to the interior of the bottom box, the output end of the stepper motor is fixedly connected to a flange rotator, the right end of the flange rotator is rotatably connected to a screw rod, the right end of the fixed frame is rotatably connected to the interior of the fixed frame, the slot of the fixed frame is fixedly connected to the interior of the bottom box by bolts, the outer side of the middle part of the screw rod is slidably connected to a threaded cylinder, the outer side of the threaded cylinder is fixedly connected to a connecting block, both sides of the connecting block are fixedly connected to fixing columns, the interiors of the two fixing columns are fixedly connected to a first support rod, the top of the first support rod is fixedly connected to a first rotating column, both ends of the first rotating column are fixedly connected to the interior of the articulated frame, and the top wall of the articulated frame is fixedly connected to the bottom wall of the shell.

[0007] Furthermore, the middle of the first support rod is rotatably connected to a first connecting column, the outer sides of both ends of the first connecting column are fixedly connected to second support rods, and the other side of the second support rod is rotatably connected to a support plate, and the support plate is fixedly connected to the interior of the bottom box.

[0008] Furthermore, a discharge pipe is fixedly connected to the bottom right end of the shell, a protection box is fixedly connected to the bottom left end of the shell, a second drive motor is fixedly connected to the interior of the protection box, an output end of the second drive motor is fixedly connected to a first connecting shaft, and an outer side of the first connecting shaft is rotatably connected to a first sprocket.

[0009] Furthermore, a chain is provided on the outer side of the first sprocket, a threaded rod is provided on the inner side of the outer shell, a second connecting shaft is fixedly connected to the left end of the threaded rod, a second sprocket is fixedly connected to the outer side of the second connecting shaft, the second sprocket is provided inside the second connecting shaft, and the first sprocket and the second sprocket are meshed with the second connecting shaft.

[0010] Furthermore, a support frame is fixedly connected to the left top of the bottom box, the left end of the outer shell is rotatably connected to the top inner wall of the support frame, a chain cover is provided on the outside of the chain, and a pulley is fixedly connected to the bottom of the bottom box.

[0011] Furthermore, a dust removal and stirring mechanism is provided on the top of the shell;

[0012] The dust removal and stirring mechanism includes a feed barrel, a first conveying pipe, a first drive motor and a second connecting column. A rack plate is provided at the bottom of the feed barrel. Connecting frames are fixedly connected to the outer side of the bottom of the feed barrel. The bottoms of the four connecting frames are fixedly connected to the outer side of the top end of the first conveying pipe. The left side of the first drive motor is fixedly connected to the right side of the first conveying pipe. The output end of the first drive motor is fixedly connected to a gear, which is meshed with the rack plate. The second connecting column is fixedly connected to the inside of the rack plate, and the top of the second connecting column is fixedly connected to a stirring rod.

[0013] Furthermore, a ventilation pipe is fixedly connected to the outer side of the top of the feed barrel, and a transfer pipe is fixedly connected to the outer side of the ventilation pipe. The bottom ends of multiple transfer pipes are fixedly connected to a second conveying pipe, and the right side of the second conveying pipe is fixedly connected to an exhaust fan, and a guide plate is fixedly connected to the top of the internal hole groove of the feed barrel.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model can solve the problem of limiting the ability of the extruder to adapt to feed ports of different heights or different models, which may lead to reduced production efficiency and increased costs, by setting a height adjustment mechanism. The stepper motor is started by the control end, and the flange rotator on the output end of the stepper motor drives the screw rod to rotate inside the fixed frame and the flange rotator, so that the threaded cylinder on the outside slides, and drives the first rotating column at the top of the first support rod to slide inside the hinged frame to drive the shell to adjust the height. After the adjustment is completed, the first connecting column on the middle part drives the second support rod to rise and fall, to support and fix the bottom of the first support rod, thereby effectively improving the feeding of screw extruders of different heights to improve work efficiency.

[0016] 2. The dust removal and stirring mechanism can solve the problem that the internal materials cannot be stirred during feeding, the feeding port is blocked during use, and the work needs to be stopped for cleaning, which causes environmental pollution, and the work efficiency cannot be quickly improved and a lot of time is wasted. By starting the exhaust fan, the smoke will enter the interior of the ventilation pipe through the holes and grooves inside the feeding barrel. After being sucked into the ventilation pipe, it will flow into the second conveying pipe through the adapter pipe, and then be discharged through the top of the exhaust fan. After feeding, the gear on the output end of the first drive motor will drive the rack disk at the bottom of the feeding barrel to rotate, and the second connecting column inside the rack disk will drive the top stirring rod to rotate inside the feeding barrel to stir the internal materials to prevent blockage, thereby effectively collecting and filtering the generated dust, improving the cleanliness of the operating environment, reducing the impact on the equipment, protecting the health of the operator, and preventing excessive pouring that requires the machine to be shut down for cleaning, thereby improving work efficiency and reducing environmental pollution.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the feeding mechanism for the screw extruder proposed by the utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the bottom box of the feeding mechanism for the screw extruder proposed by the utility model;

[0020] Figure 3 This is a structural diagram of a screw rod for a feeding mechanism of a screw extruder proposed by the utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the inner shell of the feeding mechanism for the screw extruder proposed by the utility model;

[0022] Figure 5 This is a structural diagram of the dust removal and stirring mechanism of the feeding mechanism for the screw extruder proposed by the utility model;

[0023] Figure 6 The utility model is a schematic internal cross-sectional view of the dust removal and stirring mechanism of the feeding mechanism for the screw extruder.

[0024] Legend:

[0025] 1. Bottom box; 2. Shell; 3. Height adjustment mechanism; 301. Stepper motor; 302. Flange rotator; 303. Screw rod; 304. Fixing frame; 305. Threaded barrel; 306. Connecting block; 307. Fixing column; 308. First support rod; 309. First rotating column; 310. Articulated frame; 311. First connecting column; 312. Second support rod; 313. Support plate; 4. Dust removal and stirring mechanism; 401. Feeding barrel; 402. Rack plate; 403. Connecting frame; 404. A conveying pipe; 405, a first driving motor; 406, a gear; 407, a second connecting column; 408, a stirring rod; 409, a ventilation pipe; 410, a transfer pipe; 411, a second conveying pipe; 412, an exhaust fan; 413, a guide plate; 5, a protective box; 6, a chain cover; 7, a second driving motor; 8, a first connecting shaft; 9, a first sprocket; 10, a chain; 11, a second connecting shaft; 12, a second sprocket; 13, a threaded rod; 14, a discharge pipe; 15, a support frame; 16, a pulley. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figure 1 - Figure 4 As shown: a feeding mechanism for a screw extruder, comprising a bottom box 1 and a shell 2, wherein a height adjustment mechanism 3 is provided on the top of the bottom box 1;

[0028] The height adjustment mechanism 3 includes: a stepper motor 301, a fixing frame 304 and an articulated frame 310. The bottom wall of the stepper motor 301 is fixedly connected to the inside of the bottom box 1. The output end of the stepper motor 301 is fixedly connected to a flange rotator 302. The right end of the flange rotator 302 is rotatably connected to a screw rod 303. The right end of the fixing frame 304 is rotatably connected to the inside of the fixing frame 304. The slot of the fixing frame 304 is fixedly connected to the inside of the bottom box 1 by bolts. The middle outer side of the screw rod 303 is slidably connected to a threaded cylinder 305. The outside of the threaded cylinder 305 is fixedly connected to a connecting block 306. The connecting block 306 is fixedly connected to the outside of the threaded cylinder 305. 06 is fixedly connected with fixed columns 307 on both sides, the inside of the two fixed columns 307 is fixedly connected with a first support rod 308, the top of the first support rod 308 is fixedly connected with a first rotating column 309, both ends of the first rotating column 309 are fixedly connected to the inside of an articulated frame 310, the top of the articulated frame 310 is fixedly connected to the bottom wall of the shell 2, the middle part of the first support rod 308 is rotatably connected with a first connecting column 311, the outer sides of both ends of the first connecting column 311 are fixedly connected with second support rods 312, the other side of the second support rod 312 is rotatably connected to a support plate 313, and the support plate 313 is fixedly connected to the inside of the bottom box 1.

[0029] The height adjustment mechanism 3 is used to fix the driving device in the interior of the bottom box 1, which can better protect the driving device. The flange rotator 302 on the output end of the stepper motor 301 drives the screw rod 303 to rotate. The other end of the screw rod 303 rotates inside the fixing frame 304 to support and fix the screw rod 303. When rotating, the threaded cylinder 305 slides on the screw rod 303 to drive the first support rod 308 at both ends of the fixed column 307 at the top of the connecting block 306 to rotate. The top of the first support rod 308 is fixedly connected with the second support rod 308. A rotating column 309 will slide inside the articulated frame 310 to adjust the height of the top shell 2 to load screw extruders at different heights. When adjusting the height, the first connecting column 311 on the middle part of the first support rod 308 will drive the second support rod 312 to rotate on the support plate 313, and support the bottom during lifting and lowering, which can better support the bottom. After turning off the stepper motor 301, the flange rotator 302 will jam the screw rod 303 through the internal nut, which can limit the screw rod 303 to prevent rotation.

[0030] like Figure 1 - Figure 4 As shown, a discharge pipe 14 is fixedly connected to the bottom of the right end of the shell 2, a protection box 5 is fixedly connected to the bottom of the left end of the shell 2, a second drive motor 7 is fixedly connected inside the protection box 5, a first connecting shaft 8 is fixedly connected to the output end of the second drive motor 7, a first sprocket 9 is rotatably connected to the outer side of the first connecting shaft 8, a chain 10 is arranged on the outer side of the first sprocket 9, a threaded rod 13 is arranged inside the shell 2, a second connecting shaft 11 is fixedly connected to the left end of the threaded rod 13, a second sprocket 12 is fixedly connected to the outer side of the second connecting shaft 11, the second sprocket 12 is arranged inside the second connecting shaft 11, the first sprocket 9 and the second sprocket 12 are meshed with the second connecting shaft 11, a support frame 15 is fixedly connected to the top left side of the bottom box 1, the left end of the shell 2 is rotatably connected to the top inner wall of the support frame 15, a chain cover 6 is arranged on the outer side of the chain 10, and a pulley 16 is fixedly connected to the bottom of the bottom box 1.

[0031] The internal material is transferred to the screw extruder through the discharge pipe 14, and the protection box 5 is used to protect the internal second drive motor 7 to prevent the second drive motor 7 from being damaged by the outside. The first sprocket 9 on the outside of the first connecting shaft 8 on the output end of the second drive motor 7 drives the chain 10 to rotate, and the second connecting shaft 11 inside the second sprocket 12 on the other side of the chain 10 drives the threaded rod 13 to load the material. The left end of the outer shell 2 is rotatably connected to the top wall of the support frame 15. When adjusting the height, the left end can be adjusted in height to ensure the safety and stability of the device. The pulley 16 can be conveniently pushed to adjust the position of the loading equipment.

[0032] like Figure 1 - Figure 6 As shown, a dust removal and stirring mechanism 4 is provided on the top of the housing 2;

[0033] The dust removal and stirring mechanism 4 includes a feed barrel 401, a first conveying pipe 404, a first drive motor 405 and a second connecting column 407. A rack plate 402 is provided at the bottom of the feed barrel 401. Connecting frames 403 are fixedly connected to the outer side of the bottom of the feed barrel 401. The bottoms of the four connecting frames 403 are fixedly connected to the outer side of the top of the first conveying pipe 404. The left side of the first drive motor 405 is fixedly connected to the right side of the first conveying pipe 404. The output end of the first drive motor 405 is fixedly connected to a gear 406. The gear 406 is connected to the The rack plate 402 is meshed with each other, and the second connecting column 407 is fixedly connected inside the rack plate 402. The top of the second connecting column 407 is fixedly connected to a stirring rod 408. The top outer side of the feed barrel 401 is fixedly connected to a ventilation pipe 409. The outer sides of the ventilation pipes 409 are fixedly connected to transfer pipes 410. The bottom ends of multiple transfer pipes 410 are fixedly connected to a second conveying pipe 411. The right side of the second conveying pipe 411 is fixedly connected to an exhaust fan 412. The top of the internal hole groove of the feed barrel 401 is fixedly connected to a guide plate 413.

[0034] The gear 406 on the output end of the first drive motor 405 drives the rack plate 402 to rotate, and the second connecting column 407 inside drives the stirring rod 408 to rotate. When the material is put in, the internal material is stirred to prevent internal blockage. The bottom of the feed barrel 401 is fixed to the first conveying pipe 404 through the connecting frame 403 to fix the rack plate 402 and prevent it from falling. When feeding, the dust will pass through the guide plate 413 inside the feed barrel 401 to guide the dust and smoke into the hole groove of the feed barrel 401 and enter the ventilation pipe 409. The gas flows into the second conveying pipe 411 through the transfer tube 410, and the internal gas is sucked through the input end of the exhaust fan 412, and then discharged through the output end at the top. When discharging, a filter bag is placed at the output end of the exhaust fan 412 to collect dust and prevent it from being discharged to the outside.

[0035] It should be noted that the utility model is a feeding mechanism for a screw extruder. First, the second drive motor 7, the stepper motor 301 and the first drive motor 405 are connected to an external power supply to power the drive device, and the material is put into the interior of the shell 2 through the dust removal and stirring mechanism 4. When the material is put in, the generated dust and smoke will pass through the guide plate 413 to control the dust to flow into the hole groove of the feed barrel 401 and enter the interior of the ventilation pipe 409. After entering the interior, the dust will be fixed to the right end of the second conveying pipe 411 through the input end of the exhaust fan 412. The dust will be sucked into the exhaust fan 412 through the transfer tube 410 on the second conveying pipe 411, and the gas will be discharged through the output end at the top of the exhaust fan 412. During the discharge, a filter bag is placed at the output end of the exhaust fan 412 to collect dust and prevent it from being discharged to the outside.

[0036] When feeding, the gear 406 on the output end of the first drive motor 405 drives the rack plate 402 to rotate. When the rack plate 402 rotates, the second connecting column 407 inside drives the stirring rod 408 to rotate, stirring the internal material to prevent internal blockage.

[0037] When feeding screw extruders of different heights, the flange rotator 302 on the output end of the stepper motor 301 drives the screw rod 303 to rotate, and the other end of the screw rod 303 rotates inside the fixing frame 304 to support and fix the screw rod 303. When rotating, the threaded cylinder 305 slides outside the screw rod 303, and drives the first support rod 308 to slide up and down through the outer connecting block 306 and the fixing column 307. When sliding, the first rotating column 309 at the top rotates and slides inside the articulated frame 310, and then drives the top shell 2 to adjust the height to feed screw extruders of different heights. After turning off the stepper motor 301, the flange rotator 302 will jam the screw rod 303 through the internal nut, which can limit the screw rod 303 to prevent rotation.

[0038] During adjustment, the first connecting column 311 in the middle of the first support rod 308 will drive the support plate 313 of the second support rod 312 to rotate, so as to support and fix the adjusted height.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A feeding mechanism for a screw extruder, comprising a bottom box (1) and a housing (2), characterized in that: A height adjustment mechanism (3) is provided on the top of the bottom box (1); The height adjustment mechanism (3) comprises: a stepper motor (301), a fixing frame (304) and an articulated frame (310); the bottom wall of the stepper motor (301) is fixedly connected to the interior of the bottom box (1); the output end of the stepper motor (301) is fixedly connected to a flange rotator (302); the right end of the flange rotator (302) is rotatably connected to a screw rod (303); the right end of the fixing frame (304) is rotatably connected to the interior of the fixing frame (304); the slot of the fixing frame (304) is fixedly connected to the interior of the bottom box (1) by bolts; the screw rod ( A threaded cylinder (305) is slidably connected to the outer side of the middle part of the hinge (303); a connecting block (306) is fixedly connected to the outside of the threaded cylinder (305); fixed columns (307) are fixedly connected to both sides of the connecting block (306); a first support rod (308) is fixedly connected to the inside of the two fixed columns (307); a first rotating column (309) is fixedly connected to the top of the first support rod (308); both ends of the first rotating column (309) are fixedly connected to the inside of an articulated frame (310); and the top wall of the articulated frame (310) is fixedly connected to the bottom wall of the housing (2).

2. The feeding mechanism for a screw extruder according to claim 1, characterized in that: The middle part of the first support rod (308) is rotatably connected to a first connecting column (311), the outer sides of both ends of the first connecting column (311) are fixedly connected to second support rods (312), the other side of the second support rod (312) is rotatably connected to a supporting plate (313), and the supporting plate (313) is fixedly connected inside the bottom box (1).

3. The feeding mechanism for a screw extruder according to claim 1, characterized in that: A discharge pipe (14) is fixedly connected to the bottom right end of the shell (2), a protection box (5) is fixedly connected to the bottom left end of the shell (2), a second drive motor (7) is fixedly connected to the interior of the protection box (5), an output end of the second drive motor (7) is fixedly connected to a first connecting shaft (8), and the outer side of the first connecting shaft (8) is rotatably connected to a first sprocket (9).

4. The feeding mechanism for a screw extruder according to claim 3, characterized in that: A chain (10) is arranged on the outer side of the first sprocket (9), a threaded rod (13) is arranged inside the housing (2), the left end of the threaded rod (13) is fixedly connected to a second connecting shaft (11), the outer side of the second connecting shaft (11) is fixedly connected to a second sprocket (12), the second sprocket (12) is arranged inside the second connecting shaft (11), and the first sprocket (9) and the second sprocket (12) are meshed with the second connecting shaft (11).

5. The feeding mechanism for a screw extruder according to claim 4, characterized in that: The left top of the bottom box (1) is fixedly connected to a support frame (15), the left end of the outer shell (2) is rotatably connected to the top inner wall of the support frame (15), a chain cover (6) is arranged on the outer side of the chain (10), and a pulley (16) is fixedly connected to the bottom of the bottom box (1).

6. The feeding mechanism for a screw extruder according to claim 1, characterized in that: A dust removal and stirring mechanism (4) is provided on the top of the housing (2); The dust removal and stirring mechanism (4) comprises a feed barrel (401), a first conveying pipe (404), a first drive motor (405) and a second connecting column (407). A rack plate (402) is arranged at the bottom of the feed barrel (401). Connecting frames (403) are fixedly connected to the outer side of the bottom of the feed barrel (401). The bottoms of the four connecting frames (403) are fixedly connected to the outer side of the top end of the first conveying pipe (404). The left side of the first drive motor (405) is fixedly connected to the right side of the first conveying pipe (404). The output end of the first drive motor (405) is fixedly connected to a gear (406), and the gear (406) is meshed with the rack plate (402). The second connecting column (407) is fixedly connected to the inside of the rack plate (402). The top of the second connecting column (407) is fixedly connected to a stirring rod (408).

7. The feeding mechanism for a screw extruder according to claim 6, characterized in that: A ventilation pipe (409) is fixedly connected to the outer side of the top of the feed barrel (401), and a transfer pipe (410) is fixedly connected to the outer side of each of the ventilation pipes (409). The bottom ends of the plurality of transfer pipes (410) are fixedly connected to a second conveying pipe (411), and the right side of the second conveying pipe (411) is fixedly connected to an exhaust fan (412). A guide plate (413) is fixedly connected to the top of the internal hole groove of the feed barrel (401).

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