CN214448374U

CN214448374U - Double-screw extruder

Info

Publication number: CN214448374U
Application number: CN202120561741.2U
Authority: CN
Inventors: 刘一平
Original assignee: Hangzhou Shunfeng Ind Co ltd
Current assignee: Hangzhou Shunfeng Ind Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-10-22
Anticipated expiration: 2031-03-19

Abstract

The application relates to the technical field of extruders, in particular to a double-screw extruder which comprises a machine barrel, two screws, two supporting mechanisms, a placing plate and a first driving mechanism, wherein the two screws are positioned in the machine barrel; the machine barrel comprises a lower half barrel and an upper half barrel which is overturned from the lower half barrel. During operation, turn over first section of thick bamboo, clean mechanism motion is driven to second actuating mechanism, and clean mechanism cleans the screw rod, and this application has the effect that work efficiency is high.

Description

Double-screw extruder

Technical Field

The application relates to the technical field of extruders, in particular to a double-screw extruder.

Background

The double-screw extruder is mainly used for filling, blending, modifying, increasing and chlorinating rubber and engineering resin and processing polypropylene and super absorbent resin. The material is kneaded into a ball shape through a charging opening under the action of a rotating screw rod and rolls along a screw groove to advance, the material is further mixed and plasticized under the shearing, compression and stirring actions of the screw rod, the temperature and the pressure are gradually increased to present a viscous flow state, and the viscous flow state passes through a machine head at certain pressure and temperature, and finally a product with a required shape is obtained.

The double-screw extruder needs to clean two screws before use, and the existing double-screw extruder needs to be manually cleaned in the cleaning process.

With respect to the related art in the above, the inventors consider that the manual cleaning efficiency is low.

SUMMERY OF THE UTILITY MODEL

To improve cleaning efficiency, the present application provides a twin screw extruder.

The application provides a double helix extruder adopts following technical scheme:

a double-screw extruder comprises a machine barrel, two screws positioned in the machine barrel, a first driving mechanism driving the two screws to rotate relatively, a feed hopper communicated with the machine barrel, a cleaning mechanism used for cleaning the screws, a second driving mechanism driving the cleaning mechanism to move in the length direction of the machine barrel, two supporting mechanisms used for supporting the machine barrel, and a placing plate used for placing the supporting mechanisms; the machine barrel comprises a lower half barrel and an upper half barrel, wherein the lower half barrel is arranged on the supporting mechanism, and the upper half barrel is rotatably connected with the lower half barrel; the lower half cylinder comprises a main body and a sealing block, one side of the main body, which is close to the placing plate, is provided with a liquid leakage groove extending in the length direction of the cylinder, and the sealing block is embedded in the liquid leakage groove; the cleaning mechanism comprises a sliding block connected with the placing plate in a sliding mode, a water supply tank arranged at one end, far away from the placing plate, of the sliding block, a conveying pipe communicated with the water supply tank, a spray head arranged at one end, far away from the water supply tank, of the conveying pipe, a fixing rod arranged at the upper end of the water supply tank, and a brush arranged at one end, far away from the water supply tank, of the fixing rod; the spray head is positioned above the two screw rods, and the hairbrush is positioned in a gap between the two screw rods.

Through adopting above-mentioned technical scheme, the during operation, the first section of thick bamboo of upset takes off sealed piece, starts first actuating mechanism and second actuating mechanism simultaneously, and two screw rods rotate, and at this moment, the feed water tank moves at the length direction of barrel, and the shower nozzle that is located two screw rod tops spouts water to the screw rod, and two screw rods are scrubbed to the brush simultaneously, and the filth after scouring is discharged from the weeping groove, has realized the cleaning to two screw rods, has replaced manual cleaning, has effectively improved work efficiency.

Optionally, the cleaning mechanism further comprises a third motor, the third motor is fixedly installed at one end, far away from the water supply tank, of the fixing rod, the third motor is vertically arranged downwards, and the brush is fixedly connected to the tail end of an output shaft of the third motor.

Through adopting above-mentioned technical scheme, the third motor drives the brush and rotates, has effectively improved clean efficiency and clean effect.

Optionally, the cleaning mechanism further comprises a collection tank removably connected to the water supply tank, the collection tank being located below the barrel.

Through adopting above-mentioned technical scheme, rivers and filth after the cleaning flow from the weeping groove and fall to the collection box in.

Optionally, the cleaning mechanism further comprises a filter plate, wherein the filter plate is located inside the collection box.

Through adopting above-mentioned technical scheme, the filth filters through the filter plate and stops on the filter, and sewage deposits in the collection box through the filter, after the washing, pulls down the collecting box, recycles after collecting, dehydrating, drying the filth that will be detained on the filter.

Optionally, the cleaning mechanism further comprises a frame, and the filter plate is fixedly mounted at the bottom end of the frame; the side wall that the frame deviates from mutually is installed the arch, the opening has been seted up to the vertical lateral wall that sets up of collecting box, the lateral wall that the collecting box is close to mutually is seted up flutedly, the recess communicates in the opening, protruding sliding connection is in the recess.

Through adopting above-mentioned technical scheme, after the washing, take off the collecting box, operating personnel stimulates the frame, and the frame is drawn out from the recess, and the staff collects, handles, recycles the filth that is detained on the filter.

Optionally, a sliding groove is formed in the upper surface of the placing plate, the sliding block is slidably connected in the sliding groove, the second driving mechanism comprises a threaded rod screwed to the sliding block and a second motor driving the threaded rod to rotate, and the second motor is fixedly connected to the placing plate.

Through adopting above-mentioned technical scheme, start the second motor, the second motor drives the threaded rod and rotates, and the threaded rod drives the slider and moves in the spout, and the feed water tank moves along with the slider.

Optionally, the cleaning mechanism further comprises a pulley mounted on the lower bottom wall of the water supply tank, and the pulley abuts against the upper surface of the placing plate.

Through adopting above-mentioned technical scheme, if do not have the pulley, the feed water tank has two kinds of states, and is first: the bottom of the water supply tank is tightly abutted to the upper surface of the placing plate, and when the bottom of the water supply tank is directly tightly abutted to the bottom of the placing plate, the water supply tank and the placing plate generate sliding friction, so that the water supply tank is easily damaged; secondly, the method comprises the following steps: the water supply tank and the placing table have a certain gap, the weight of the water supply tank is concentrated on the sliding block, and the burden of the second driving mechanism is increased. After having had the pulley, the feed water tank passes through the pulley and slides on placing the board upper surface for the second actuating mechanism is more laborsaving.

Optionally, the two support mechanisms are respectively located at two ends of the machine barrel in the length direction, each support mechanism comprises a cylinder fixedly mounted at the upper end of the placement plate, a lower lug plate fixedly connected to the tail end of the cylinder output shaft, and an upper lug plate rotatably connected to the lower lug plate, and the upper lug plate is connected to the lower end of the lower half barrel.

Through adopting above-mentioned technical scheme, keep away from the cylinder output shaft shrink of feeder hopper, the cylinder that is close to feeder hopper one end rises, and at this moment, the barrel is in the tilt state, and sewage in the lower half section of thick bamboo is because the effect of gravity, and the nature flows down, is difficult for hoarding up in the lower half section of thick bamboo.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the shower nozzle is with water injection to the screw rod, and two screw rods are scrubbed to the brush simultaneously, and the filth after scouring is discharged from the weeping groove, has realized the cleaning to two screw rods, has replaced artifical clearance, has effectively improved work efficiency.

Drawings

FIG. 1 is a schematic view showing the overall structure of a twin screw extruder according to an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic diagram of the exploded structure of the lower half-cylinder.

Fig. 4 is an enlarged schematic structural view of a portion B in fig. 3.

FIG. 5 is a schematic view of a partial structure of a twin screw extruder according to an embodiment of the present application.

Fig. 6 is a schematic view of the overall structure of the cleaning mechanism.

Fig. 7 is an enlarged view of a portion C in fig. 6.

Description of reference numerals: 1. a barrel; 11. an upper half cylinder; 111. a first ear plate; 12. a lower half cylinder; 121. a main body; 1211. an avoidance groove; 1212. a second ear panel; 1213. a liquid leakage groove; 122. a sealing block; 1221. a lap plate; 2. a screw; 3. placing the plate; 31. a chute; 4. a support mechanism; 41. a cylinder; 42. a lower ear plate; 43. an upper ear plate; 44. placing a rack; 5. a first drive mechanism; 51. mounting a plate; 52. a first motor; 53. a first gear; 54. a second gear; 6. a second drive mechanism; 61. a second motor; 62. a threaded rod; 7. a cleaning mechanism; 71. a water supply tank; 72. a slider; 73. a pulley; 74. a delivery pipe; 75. a spray head; 76. fixing the rod; 77. a third motor; 78. a brush; 79. a collection box; 791. an opening; 792. a groove; 710. a frame; 7101. a protrusion; 711. a filter plate; 712. connecting the ear plates; 8. a feed hopper; 9. and a limiting plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a double-screw extruder. Referring to fig. 1, 2 and 5, a twin screw extruder includes a barrel 1, two screws 2 located inside the barrel 1, two support mechanisms 4 for supporting the barrel 1, a placing plate 3 for placing the support mechanisms 4, a first driving mechanism 5 for driving the two screws 2 to rotate, a cleaning mechanism 7 for cleaning the two screws 2, and a second driving mechanism 6 for driving the cleaning mechanism 7 to move in the longitudinal direction of the barrel 1.

Referring to fig. 1 and 2, the cylinder 1 includes an upper half cylinder 11 and a lower half cylinder 12; one end of the upper half tube 11 is communicated with a feed hopper 8, two first ear plates 111 are arranged on the length direction of the side wall of the upper half tube 11, a second ear plate 1212 corresponding to the first ear plate 111 is arranged on the side wall of the lower half tube 12, and the first ear plate 111 is rotatably connected to the second ear plate 1212.

Referring to fig. 3 and 4, the lower half barrel 12 includes a main body 121 and a sealing block 122, a liquid leakage groove 1213 is formed in the bottom wall of the main body 121, the groove length of the liquid leakage groove 1213 extends in the length direction of the barrel 1, two avoidance grooves 1211 are formed in two ends of the bottom wall of the main body 121 in the length direction, two of the avoidance grooves 1211 are respectively formed in the two ends of the bottom wall of the main body 121, a bridging plate 1221 corresponding to the avoidance grooves 1211 is fixedly connected to the side wall of the sealing block 122, and a bolt is threaded through the bridging plate 1221 and is simultaneously screwed to the main body 121.

Referring to fig. 1 and 2, the two supporting mechanisms 4 are respectively located at two ends of the barrel 1 in the length direction, each supporting mechanism 4 includes a cylinder 41, a lower ear plate 42 fixedly installed at the end of an output shaft of the cylinder 41, an upper ear plate 43 rotatably connected to the lower ear plate 42, and a placing frame 44 fixedly connected to one end of the upper ear plate 43 far away from the lower ear plate 42, the placing frame 44 is fixedly connected to a lower bottom wall of the main body 121, and the two cylinders 41 are fixedly connected to the upper surface of the placing plate 3.

During operation, the output shaft of the cylinder 41 near one end of the feed hopper 8 extends, the output shaft of the cylinder 41 far away from one end of the feed hopper 8 contracts, and the machine barrel 1 inclines.

Referring to fig. 5, a limiting plate 9 for plugging the cylinder 1 is arranged at one end of the cylinder 1 close to the feed hopper 8. The first driving mechanism 5 comprises a mounting plate 51 vertically connected to the limiting plate 9 and a first motor 52 fixedly mounted at the upper end of the mounting plate 51, an output shaft of the first motor 52 is fixedly connected to one of the screws 2, a first gear 53 is fixedly sleeved on the screw 2 connected to the first motor 52, a second gear 54 is fixedly sleeved on the other screw 2, and the first gear 53 is meshed with the second gear 54.

During operation, the first motor 52 is started, the first motor 52 drives the screw rod 2 to rotate, the first gear 53 rotates along with the screw rod 2, meanwhile, the second gear 54 is driven to rotate, and the second gear 54 drives the other screw rod 2 to rotate.

Referring to fig. 1, the upper surface of the placing plate 3 is provided with a chute 31 extending in the length direction of the cylinder 1. Referring to fig. 6, the cleaning mechanism 7 includes a slider 72 slidably coupled in the chute 31, a water supply tank 71 fixedly installed at an end of the slider 72 remote from the placing plate 3, and two pulleys 73 installed at a lower end of the water supply tank 71, the pulleys 73 abutting against an upper surface of the placing plate 3.

Referring to fig. 6 and 7, the cleaning mechanism 7 further includes a delivery pipe 74 vertically communicated with the upper end of the water supply tank 71, the delivery pipe 74 is composed of two vertical steel pipes, a spray head 75 is connected to one end of the delivery pipe 74 far away from the water supply tank 71, the spray head 75 is vertically arranged downwards, and the spray head 75 is positioned above the two screws 2.

Referring to fig. 6 and 7, the cleaning mechanism 7 further includes a fixing rod 76 vertically connected to the water supply tank 71, the fixing rod 76 is composed of two steel pipes perpendicular to each other, a third motor 77 is fixedly installed at one end of the fixing rod 76 far away from the water supply tank 71, the third motor 77 is vertically arranged downwards, a brush 78 is fixedly connected to the tail end of an output shaft of the third motor 77, and referring to fig. 1, the brush 78 is located in a gap between the two screws 2.

Referring to fig. 6, the cleaning mechanism 7 further includes a collection box 79 connected to the water supply tank 71, two side walls of the collection box 79 facing away from each other are fixedly connected with connection lug plates 712, and bolts are threaded on the connection lug plates 712 and are simultaneously screwed on the side walls of the water supply tank 71.

Referring to fig. 6, two parallel grooves 792 are opened on the opposite inner side walls of the collection box 79, an opening 791 is opened on the side wall of the collection box 79, and the two grooves 792 are respectively communicated with two ends of the opening 791 in the length direction. The cleaning mechanism 7 further comprises a frame 710, a filter plate 711 mounted at the bottom end of the frame 710, and a rectangular projection of the frame 710 along the vertical direction, wherein a protrusion 7101 is fixedly mounted on a side wall of the frame 710, which is away from the frame 710, and the protrusion 7101 is slidably connected to the groove 792.

Referring to fig. 1 and 6, the second driving mechanism 6 includes a threaded rod 62 screwed to the sliding block 72, and a second motor 61 driving the threaded rod 62 to rotate, and the second motor 61 is fixedly mounted on the side wall of the placing plate 3.

During operation, start second motor 61, second motor 61 drives threaded rod 62 and rotates, and threaded rod 62 drives slider 72 reciprocating motion in spout 31, and wherein second motor 61 is servo motor.

The implementation principle of the double-screw extruder in the embodiment of the application is as follows:

firstly, after the extrusion work is finished, the upper half barrel 11 is turned over, the sealing block 122 is detached, the first motor 52 is in an opening state, and the two screw rods 2 continue to rotate.

Secondly, the second motor 61 is started, and the second motor 61 drives the water supply tank 71 to reciprocate in the length direction of the machine barrel 1.

And thirdly, water flow is sprayed out from the spray head 75 to wash the two screws 2.

And fourthly, starting the third motor 77, wherein the third motor 77 drives the brush 78 to rotate, and the brush 78 brushes the two screws 2.

And fifthly, sewage and dirt are discharged from the leakage groove 1213 and flow into the collection tank 79, and the dirt is retained on the filter plate 711.

Sixthly, after cleaning is finished, the collecting box 79 is detached, the frame 710 is pulled out, and the dirt on the filter plate 711 is taken out and is reused after retreatment.

Seventh, the output shaft of the cylinder 41 near one end of the hopper 8 is extended, the output shaft of the cylinder 41 far from one end of the hopper 8 is extended, the cylinder 1 is inclined, and the sewage staying in the lower cylinder half 12 flows out.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A double-screw extruder is characterized in that: the cleaning device comprises a machine barrel (1), two screws (2) positioned in the machine barrel (1), a first driving mechanism (5) for driving the two screws (2) to rotate relatively, a feed hopper (8) communicated with the machine barrel (1), a cleaning mechanism (7) for cleaning the screws (2), a second driving mechanism (6) for driving the cleaning mechanism (7) to move in the length direction of the machine barrel (1), two supporting mechanisms (4) for supporting the machine barrel (1), and a placing plate (3) for placing the supporting mechanisms (4); the machine barrel (1) comprises a lower half barrel (12) arranged on the supporting mechanism (4) and an upper half barrel (11) rotatably connected with the lower half barrel (12); the lower half cylinder (12) comprises a main body (121) and a sealing block (122), one side of the main body (121) close to the placing plate (3) is provided with a liquid leakage groove (1213) extending in the length direction of the cylinder (1), and the sealing block (122) is embedded in the liquid leakage groove (1213); the cleaning mechanism (7) comprises a sliding block (72) connected with the placing plate (3) in a sliding mode, a water supply tank (71) installed at one end, far away from the placing plate (3), of the sliding block (72), a conveying pipe (74) communicated with the water supply tank (71), a spray head (75) installed at one end, far away from the water supply tank (71), of the conveying pipe (74), a fixing rod (76) installed at the upper end of the water supply tank (71), and a brush (78) installed at one end, far away from the water supply tank (71), of the fixing rod (76); the spray head (75) is positioned above the two screws (2), and the brush (78) is positioned in a gap between the two screws (2).

2. A twin screw extruder as defined in claim 1 wherein: the cleaning mechanism (7) further comprises a third motor (77), the third motor (77) is fixedly installed at one end, far away from the water supply tank (71), of the fixing rod (76), the third motor (77) is vertically arranged downwards, and the hairbrush (78) is fixedly connected to the tail end of an output shaft of the third motor (77).

3. A twin screw extruder as defined in claim 1 wherein: the cleaning mechanism (7) further comprises a collection tank (79) detachably connected to the water supply tank (71), the collection tank (79) being located below the barrel (1).

4. A twin screw extruder as defined in claim 3 wherein: the cleaning mechanism (7) further comprises a filter plate (711), and the filter plate (711) is positioned inside the collecting box (79).

5. A twin screw extruder as defined in claim 4 in which: the cleaning mechanism (7) further comprises a frame (710), and the filter plate (711) is fixedly arranged at the bottom end of the frame (710); the lateral wall that frame (710) deviated from mutually installs arch (7101), opening (791) have been seted up to the lateral wall of the vertical setting of collecting box (79), collecting box (79) are close to mutually and are seted up flutedly (792), recess (792) communicate in opening (791), arch (7101) sliding connection is in recess (792).

6. A twin screw extruder as defined in claim 1 wherein: the upper surface of the placing plate (3) is provided with a sliding groove (31), the sliding block (72) is connected in the sliding groove (31) in a sliding mode, the second driving mechanism (6) comprises a threaded rod (62) which is in threaded connection with the sliding block (72) and a second motor (61) which drives the threaded rod (62) to rotate, and the second motor (61) is fixedly connected to the placing plate (3).

7. A twin screw extruder as defined in claim 1 wherein: the cleaning mechanism (7) further comprises a pulley (73) arranged on the lower bottom wall of the water supply tank (71), and the pulley (73) is abutted against the upper surface of the placing plate (3).

8. A twin screw extruder as defined in claim 1 wherein: two supporting mechanism (4) are located barrel (1) length direction both ends respectively, supporting mechanism (4) are including fixed mounting in cylinder (41) of placing board (3) upper end, fixed connection in cylinder (41) output shaft terminal lower otic placode (42), rotate and connect in the last otic placode (43) of lower otic placode (42), it connects in lower half section of thick bamboo (12) lower extreme to go up otic placode (43).