Powder / granule automatic proportioning, mixing and conveying system for plastic processing

Abstract

The utility model discloses an automatic powder / granule proportioning, mixing and conveying system for plastic processing. The automatic powder / granule proportioning, mixing and conveying system comprises a granule processing system, a filler processing system, a feeding mechanism, a mixing mill, a bracing machine, a water tank and a granulator, the granule treatment comprises a granule bin, a drying tank I and a storage tank I which are connected in sequence; the filler treatment system comprises a powder treatment system and a dispensing system; the powder processing system comprises a stone bin, a stone washing machine, a drying tank II, a pulverizer, a powder bin, a reaction stirring tank, a drying tank III and a storage tank II which are connected in sequence; the dispensing system comprises a mixing and stirring tank, a liquid storage tank, a solvent tank and a stock bin; a spraying pipe is arranged at the upper part in the reaction stirring tank; and materials in the liquid storage tank are conveyed to the spraying pipe through a pump I and then are sprayed into the reaction stirring tank. According to the utility model, automation of processes such as pretreatment and mixing of raw materials can be realized, the processing efficiency of plastic master batches is improved, and the yield of the plastic master batches is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a powder / granule automatic proportioning mixing conveying system for plastic processing belongs to the field of plastic processing equipment. BACKGROUND

[0002] The plastic master batch is the concentrated body that each type plastic auxiliary is carried in the resin and is made, in the manufacturing plastic process, need not to add additional auxiliary again, just need to add the master batch according to proportion, greatly simplify production process, directly satisfy the plastic product forming process requirement. Meanwhile, plastic master batch has the advantages such as uniform dispersion, can reduce dust pollution, stabilize product quality, improve production efficiency, is widely used in plastic modification, plastic product processing industry, and the market prospect is broad. The plastic master batch will add a certain proportion of filler, such as calcium carbonate, talcum powder, glass fiber, diatomite, etc., the added filler can improve thermal performance and electrical performance, and improve mechanical properties and wear resistance. In the processing process, the filler, granules and other independent pretreatment is carried out, then the mixed material is added to the mixing mill for mixing, and finally the plastic master batch is obtained after the cooling and cutting of the pull rod. Because the filler, granules and other independent pretreatment is carried out, the time and manpower are consumed for the transfer of various materials during batching, and the filler is generally powder, which is easy to produce dust and cause pollution during mixing and feeding, so it is urgent to develop a conveying and feeding system suitable for use in plastic processing process and capable of automatically proportioning and mixing powder and granules. UTILITY MODEL CONTENT

[0003] The utility model discloses a powder / granule automatic proportioning mixing conveying system for plastic processing, which can realize the automation of the pretreatment and mixing of filler, granules and other raw materials, improve the processing efficiency of plastic master batch and increase the yield of plastic master batch.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A powder / granule automatic proportioning mixing conveying system for plastic processing includes a granule processing system, a filler processing system, a feeding mechanism, a mixing mill, a pull rod machine, a water tank and a pelletizer.

[0006] The granule processing includes a granule bin, a drying tank I and a storage tank I connected in sequence.

[0007] The filling material processing system comprises a powder processing system and a dispensing system; the powder processing system comprises a stone bin, a stone washing machine, a drying tank II, a pulverizer, a powder bin, a reaction stirring tank, a drying tank III and a storage tank II connected in sequence; the dispensing system comprises a mixing stirring tank and a liquid storage tank, the inlet of the mixing stirring tank is connected with a solvent tank and more than one bin, and the outlet of the mixing stirring tank is connected with the inlet of the liquid storage tank; a spraying pipe is arranged in the upper portion of the reaction stirring tank, and the material in the liquid storage tank is sprayed into the reaction stirring tank through the spraying pipe by a pump I;

[0008] The feeding mechanism comprises a shell, the top of the shell is provided with a feeding port I and a feeding port II, the outlet of the storage tank I is connected with the feeding port II, and the storage tank II is connected with the feeding port I; the bottom of the shell is provided with a discharging port which is located directly below the feeding port I, and the discharging port is connected with the inlet of the mixing machine; a push plate and a baffle are arranged below the feeding port II, the top of the baffle is connected with a rotating shaft, and the two ends of the rotating shaft are rotatably connected with the shell; an automatic push rod and a motor are arranged outside the shell, the output end of the automatic push rod extends into the shell and is connected with the push plate and used for driving the push plate to move, the shaft of the motor extends into the shell and is connected with one end of the rotating shaft and used for driving the rotating shaft and the baffle to rotate; a controller is arranged outside the shell, and the controller is connected with the automatic push rod and the motor;

[0009] The mixing material processed by the mixing machine is sent to a water tank for cooling after being drawn into strips by a drawing machine, and then is sent to a pelletizer for processing to obtain plastic master batches.

[0010] The feeding mechanism is provided with two feeding ports, and the granules and the filling material enter the feeding mechanism from different feeding ports, the feeding port I is opposite to the discharging port, and the granules can be directly fed, the baffle and the push plate are arranged below the feeding port II, the material is blocked in the shell by the baffle after entering, the push plate and the baffle are reset after the feeding of the material in the feeding port I is completed, the rotating shaft and the baffle are driven to rotate by the motor, the originally vertical baffle is moved to the horizontal position and blocks the feeding port I, then the push plate is driven to move to the discharging port by the automatic push rod, so that the material is pushed from the position of the feeding port II to the discharging port for feeding, and the push plate and the baffle are reset after the feeding is completed. Through repeated operation, the granules and the filling material can be fed into the mixing machine in multiple times, so that the dust generated by one-time large feeding is reduced, and the granules and the filling material are alternately fed in multiple times, which is beneficial to the mixing of the two materials and improves the mixing effect.

[0011] Further, the bottom of the push plate is provided with an inclined knife plate. The knife plate is arranged to assist the push plate in feeding the material to the discharging port to the mixing machine.

[0012] Further, the stone crusher is arranged between the stone bin and the stone washing machine, and is used to crush the materials in the stone bin and then send the crushed materials to the stone washing machine for treatment. The calcite and other fillers are crushed into small pieces by the stone crusher, which is beneficial to the subsequent cleaning in the stone washing machine.

[0013] Further, the outlets of the storage tanks I and II are respectively provided with weighing hoppers. The weighing hoppers are beneficial to accurately measure the amount of the materials.

[0014] Further, the stone washing machine sends the washed water to the sedimentation tank through a pipeline, the supernatant in the sedimentation tank is sent to the water storage tank, and the clean water in the water storage tank is sent to the stone washing machine through the pump II. The waste water of the stone washing machine is treated in the sedimentation tank, recovered to the water storage tank, and then sent to the stone washing machine for use, so as to realize the recycling of the waste water.

[0015] Further, the outer sides of the drying tanks I, II and III are respectively provided with heating jackets, the heating jacket of the drying tank II is arranged to pass steam, the tail gas generated in the drying tank II is respectively sent to the heating jackets of the drying tanks I and III through pipelines, then the tail gas in the heating jackets is sent to the heat exchanger I for heat exchange, and then sent to the condenser I, the condensate in the condenser I is sent to the water storage tank, and the non-condensable gas in the condenser I is sent to the tail gas treatment system, the tail gas generated in the drying tank I is sent to the tail gas treatment system, the tail gas generated in the drying tank III is sent to the heat exchanger II for heat exchange, and then sent to the condenser II, and the condensate in the condenser II is sent to the solvent tank, and the non-condensable gas in the condenser II is sent to the tail gas treatment system. Since the drying tank II is used to dry the cleaned fillers, the drying temperature can reach 100-120℃, and the tail gas generated is mainly water vapor, the drying tank I is used to dry the plastic particles, and the drying temperature should be about 60℃ to prevent the plastic particles from deteriorating due to high temperature, and the drying tank III is used to separate and remove the organic solvent in the materials, and the drying temperature should be about 60℃, so the temperature of the tail gas generated in the drying tank II is high, which can be used to heat the drying tanks I and III, and then the tail gas is cooled to obtain condensate water which is recovered to the water storage tank, and the tail gas which cannot be recovered is sent to the tail gas treatment system for treatment.

[0016] Further, the filler treatment system further comprises a circulating water tank, and the water in the circulating water tank is sent to the heat exchangers I and II through the pump III for heat exchange, and then sent to the water tank, and the water in the water tank is sent to the cooling tower for cooling, and then sent to the circulating water tank. The water circulation established by the circulating water tank and the cooling tower provides cooling water for the water tank, and also provides cooling capacity for the tail gas cooling of the drying tanks II and III.

[0017] Further, the water in the water tank is filtered by the filter, and then sent to the cooling tower for cooling, and then sent to the circulating water tank. The filter is arranged to filter the water in the water tank, which is beneficial to the cooling and recovery of the water.

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] The utility model discloses a setting granule processing system carries out drying treatment to plastic granule, and the filling material processing system including powder processing system and dispensing system that sets simultaneously includes, carries out cleaning and crushing etc. Process to filling material through powder processing system, then the modified filling material of mixing reaction of filling material and the modified reagent of dispensing system configuration is obtained, then through the special feeding mechanism that sets, the plastic granule and modified filling material are handled into the mixing mill in multiple times, and it is favorable to the plastic granule and modified filling material are mixed fully, and the performance of preparation plastic master batch is improved. Moreover, the feeding mechanism is connected with the import of storage tank I, storage tank II and mixing mill respectively, has good airtightness, can effectively avoid the dust pollution of feeding. Simultaneously, the tail gas in drying process, the wastewater after washing etc. are recycled, and production cost is effectively saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the inside structure schematic view of feeding mechanism in embodiment 1.

[0021] Fig. 2 It is the side view of inside of feeding mechanism in embodiment 1.

[0022] Fig. 3 It is the plan view of inside of feeding mechanism in embodiment 1.

[0023] Fig. 4 It is the structure schematic view of feeding mechanism in embodiment 1.

[0024] Fig. 5 It is the structure schematic view of powder / granule automatic proportioning mixing conveying system for plastic processing in embodiment 3,

[0025] Fig. 6 It is the flow schematic diagram of tail gas in drying tank II in embodiment 3.

[0026] Fig. 7 It is the flow schematic diagram of water in circulating water tank in embodiment 3.

[0027] Reference signs: 1-pellet bin, 11-drying tank I, 12-storage tank I, 13-heat exchanger I, 14-condenser I, 2-stone bin, 21-stone washing machine, 22-drying tank II, 23-pulverizer, 24-powder bin, 25-reaction stirring tank, 26-drying tank III, 261-heat exchanger II, 262-condenser II, 27-storage tank II, 28-stone crusher, 3-mixing stirring tank, 31-liquid storage tank, 32-solvent tank, 33-material bin, 34-pump I, 4-housing, 41-feeding port I, 42-feeding port II, 43-discharging port, 44-pushing plate, 441-knife plate, 45-baffle, 46-rotating shaft, 47-automatic pushing rod, 48-motor, 49-controller, 5-mixer, 6-drawing machine, 7-water tank, 8-pelletizer, 9-settling tank, 91-water storage tank, 92-pump II, 10-circulating water tank, 101-pump III, 102-cooling tower, 103-filter. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and examples, but the utility model is not limited to examples. The specific experimental conditions and methods not noted in the following examples, the technical means used are usually conventional means familiar to those skilled in the art.

[0029] Example 1: a kind of powder / granular automatic proportioning mixing and conveying system for plastic processing, it includes granular processing system, filler processing system, feeding mechanism, mixer 5, drawing machine 6, water tank 7 and pelletizer 8;

[0030] The granular processing includes the granular bin 1, drying tank I 11, storage tank I 12 connected in sequence;

[0031] The filler processing system includes powder processing system and dispensing system;The powder processing system includes stone bin 2, stone washing machine 21, drying tank II 22, pulverizer 23, powder bin 24, reaction stirring tank 25, drying tank III 26 and storage tank II 27 connected in sequence;The dispensing system includes mixing stirring tank 3 and liquid storage tank 31, the inlet of mixing stirring tank 3 is connected with solvent tank 32 and 1 material bin 33, and the outlet of mixing stirring tank 3 is connected with the inlet of liquid storage tank 31;The upper portion in reaction stirring tank 25 is provided with a spray pipe, and the material in liquid storage tank 31 is sent to the spray pipe by pump I 34 and then sprayed into reaction stirring tank 25;Stone crusher 28 is arranged between stone bin 2 and stone washing machine 21, and stone crusher 28 is used to crush the material in stone bin 2 and then send it to stone washing machine 21 for processing, which crushes the filler such as calcite into small pieces, so that it is beneficial to subsequent cleaning in stone washing machine 21;

[0032] As Figs. 1-4As shown, the feeding mechanism comprises a housing 4, the top of which is provided with an inlet I 41 and an inlet II 42, the outlet of the storage tank I 12 is connected with the inlet II 42, and the storage tank II 27 is connected with the inlet I 41; the bottom of the housing 4 is provided with an outlet 43 which is located directly below the inlet I 41, and the outlet 43 is connected with the inlet of the mixer 5; the lower part of the inlet II 42 is provided with a push plate 44 and a baffle 45, the top of the baffle 45 is connected with a rotating shaft 46, and the two ends of the rotating shaft 46 are respectively connected with the housing 4; the housing 4 is externally provided with an automatic push rod 47 and a motor 48, the output end of the automatic push rod 47 extends into the housing 4 and is connected with the push plate 44 and used to drive the push plate 44 to move, the shaft of the motor 48 extends into the housing 4 and is connected with one end of the rotating shaft 46 and used to drive the rotating shaft 46 and the baffle 45 to rotate; the outside of the housing 4 is provided with a controller 49, and the controller 49 is connected with the automatic push rod 47 and the motor 48 respectively; the bottom of the push plate 44 is provided with an inclined knife plate 441, and the setting of the knife plate 441 is beneficial to assist the push plate 44 to feed all the materials to the outlet 43 to the mixer 5;

[0033] The mixed material treated by the mixer 5 is sent to the water tank 7 after being drawn into strips by the drawing machine 6, cooled, and then sent to the pelletizer 8 for treatment to obtain plastic master batch.

[0034] The difference between the powder / granule automatic mixing and conveying system for plastic processing of the embodiment 2 and the mixing and conveying system of the embodiment 1 is that the outlets of the storage tank I 12 and the storage tank II 27 are respectively provided with weighing hoppers, and the setting of the weighing hoppers is beneficial to accurately measure the amount of feeding material; the washed water of the stone washing machine 21 is sent to the sedimentation tank 9 through a pipeline, the supernatant in the sedimentation tank 9 is sent to the water storage tank 91, the clean water in the water storage tank 91 is sent to the stone washing machine 21 through the pump II 92, the waste water of the stone washing machine 21 is treated in the sedimentation tank 9, recovered to the water storage tank 91, and then sent to the stone washing machine 21 for use, so as to realize the recycling of waste water; the outside of the drying tank I 11, the drying tank II 22 and the drying tank III 26 is provided with a heating jacket, steam is introduced into the heating jacket of the drying tank II 22; the tail gas generated in the drying tank II 22 is sent to the heating jackets of the drying tank I 11 and the drying tank III 26 through a pipeline respectively, then the tail gas in the heating jackets is sent to the heat exchanger I 13 for heat exchange and then sent to the condenser I 14, the condensate in the condenser I 14 is sent to the water storage tank 91, and the non-condensable gas in the condenser I 14 is sent to the tail gas treatment system; the tail gas generated in the drying tank I 11 is sent to the tail gas treatment system; the tail gas generated in the drying tank III 26 is sent to the heat exchanger II 261 for heat exchange and then sent to the condenser II 262, the condensate of the condenser II 262 is sent to the solvent tank 32, and the non-condensable gas in the condenser II 262 is sent to the tail gas treatment system.

[0035] Example 3: As Figs. 5-7 As shown, the difference between the automated proportioning, mixing, and conveying system for plastic processing powders / granules described in this embodiment and the mixing and conveying system described in Embodiment 2 is that the filler processing system further includes a circulating water tank 10. Water in the circulating water tank 10 is pumped by pump III 101 to heat exchangers I 13 and II 261 for heat exchange, and then sent to the water tank 7. Water in the water tank 7 is sent to the cooling tower 102 for cooling, and then back to the circulating water tank 10. The water circulation established through the circulating water tank 10, cooling tower 102, etc., provides cooling water to the water tank 7, and also provides cooling capacity for the exhaust gas cooling of drying tanks II 22 and III 26. The water in the water tank 7 is filtered by filter 103 before being sent to the cooling tower 102 for cooling, and then back to the circulating water tank 10. The filter 103 filters the water in the water tank 7, which is beneficial for its cooling and recycling.

[0036] The usage process of the automated proportioning, mixing, and conveying system for plastic processing powders / granules described in this embodiment is as follows:

[0037] S1. Calcite is used as a filler. Pimecrolic acid is dissolved in acetone to obtain a calcite modifier to treat calcite. Then, the modified calcite powder and polypropylene granules are mixed and kneaded. Finally, plastic masterbatch is obtained by stretching, cooling and pelletizing. Polypropylene granules are stored in the granule silo 1, calcite is stored in the stone silo 2, acetone is stored in the solvent tank 32 and pimecrolic acid is stored in the silo 33.

[0038] S2. Calcite is fed from the stone silo 2 to the stone crusher 28 for crushing. The crushed calcite is sent to the stone washing machine 21, and water is supplied to the stone washing machine 21 from the water storage tank 91. The washed calcite is sent to the drying tank II 22 for drying. Steam is introduced into the heating jacket of the drying tank II 22. The dried calcite is sent to the crusher 23 for crushing to obtain calcite powder, which is then sent to the powder silo 24 for storage. Acetone in the solvent tank 32 and pimelic acid in the silo 33 are sent to the mixing tank 3 in proportion. The modified agent obtained by mixing in the mixing tank 3 is sent to the storage tank 31 for storage.

[0039] S3. First, the calcite powder in the powder silo 24 is sent to the reaction mixing tank 25 according to the proportion. Then, the modified agent in the storage tank 31 is sent to the spray pipe of the reaction mixing tank 25 through the pump I 34 according to the proportion and sprayed onto the calcite powder for mixing and reaction. The modified calcite powder obtained from the reaction is sent to the drying tank III 26 for drying. Steam or tail gas generated from the drying tank II 22 can be introduced into the heating jacket of the drying tank III 26. After drying, the modified calcite powder is sent to the storage tank II 27.

[0040] S4, the polypropylene pellets from the pellet bin 1 to dry tank I 11 drying, and then the polypropylene pellets to storage tank I 12 storage, drying tank I 11 heating jacket can be introduced into the steam or from the tail gas generated in the drying tank II 22;

[0041] S5, the modified proportion of calcite powder from the powder bin 24, in turn through the feeding mechanism of the feed port I 41 and discharge port 43 after the sending to the mixer 5, the feeding mechanism at this time in the baffle 45 vertical state, push plate 44 close to the side wall of the shell 4, and according to the proportion of polypropylene pellets from the storage tank II 27 and after the feed port II 42 accumulated in the baffle 45 and push plate 44 between the shell 4, when the feed port I 41 in the calcite powder discharge end, through the controller 49 start motor 48 rotation shaft 46 and drive baffle 45 rotation, so that the baffle 45 to horizontal state and block the feed port I 41, then through the controller 49 start automatic push rod 47 push plate 44 to the direction of movement of the discharge port 43, the polypropylene pellets to the discharge port 43 and fall into the mixer 5, when the polypropylene pellets are all pushed to the discharge port 43 and fall into the mixer 5, control the automatic push rod 47 reverse movement, the push plate 44 back to the original position, then control the motor 48 reverse rotation shaft 46, so that the baffle 45 back to the initial vertical state;

[0042] S6, the mixer 5 after processing the mixing material through the draw bar machine 6 into a strip after sending to the sink 7 cooling, and then sent to the pelletizer 8 treatment get plastic masterbatch;

[0043] The tail gas generated in the drying tank II 22 after the drying tank I 11 and / or drying tank III 26 heating jacket, to the heat exchanger I 13 heat and then sent to the condenser I 14, the condenser I 14 in the condensate to the water pool 91, and the condenser I 14 in the non condensing gas to the tail gas treatment system, or directly to the drying tank II 22 in the tail gas to the heat exchanger I 13 heat and then sent to the condenser I 14;

[0044] The tail gas generated in the drying tank I 11 to the tail gas treatment system;

[0045] The tail gas generated in the drying tank III 26 to the heat exchanger II 261 heat and then sent to the condenser II 262, the condenser II 262 of the condensate to the solvent tank 32, and the condenser II 262 in the non condensing gas to the tail gas treatment system;

[0046] The water of the circulating water tank 10 to the heat exchanger I 13 and / or heat exchanger II 261 heat exchange, and then sent to the sink 7 cooling after the draw bar material, then the water in the sink 7 after the filter 103 to the cooling tower 102 cooling, and then sent to the circulating water tank 10.

[0047] The utility model discloses not limit to above-mentioned embodiment, and the skilled person in the art can make equivalent transformation or replace under the premise of not violating the spirit of the utility model, and these equivalent transformations or replacements are all contained in the range defined in the application claim.

Claims

1. An automated proportioning, mixing, and conveying system for powder / granules used in plastic processing, characterized in that: It comprises a granule processing system, a filler processing system, a feeding mechanism, a mixing machine (5), a drawing machine (6), a water tank (7) and a granulator (8); The granule processing system comprises a granule bin (1), a drying tank I (11) and a storage tank I (12) connected in sequence; The filler processing system comprises a powder processing system and a dispensing system; the powder processing system comprises a stone bin (2), a stone washing machine (21), a drying tank II (22), a pulverizer (23), a powder bin (24), a reaction stirring tank (25), a drying tank III (26) and a storage tank II (27) connected in sequence; the dispensing system comprises a mixing stirring tank (3) and a liquid storage tank (31), the inlet of the mixing stirring tank (3) is connected with a solvent tank (32) and one or more than one material bin (33), and the outlet of the mixing stirring tank (3) is connected with the inlet of the liquid storage tank (31); a spraying pipe is arranged in the upper portion of the reaction stirring tank (25), and the material in the liquid storage tank (31) is sprayed into the reaction stirring tank (25) through the pump I (34) and the spraying pipe. The feeding mechanism comprises a shell (4), the top of the shell (4) is provided with a feeding port I (41) and a feeding port II (42), the outlet of the storage tank I (12) is connected with the feeding port II (42), and the storage tank II (27) is connected with the feeding port I (41); the bottom of the shell (4) is provided with a discharging port (43) located directly below the feeding port I (41), and the discharging port (43) is connected with the inlet of the mixing machine (5); a push plate (44) and a baffle (45) are arranged below the feeding port II (42), the top of the baffle (45) is connected with a rotating shaft (46), and the two ends of the rotating shaft (46) are rotatably connected with the shell (4); an automatic push rod (47) and a motor (48) are arranged outside the shell (4), the output end of the automatic push rod (47) extends into the shell (4) and is connected with the push plate (44) and used for driving the push plate (44) to move, the shaft of the motor (48) extends into the shell (4) and is connected with one end of the rotating shaft (46) and used for driving the rotating shaft (46) and the baffle (45) to rotate; a controller (49) is arranged on the outer side of the shell (4), and the controller (49) is connected with the automatic push rod (47) and the motor (48). The mixing material processed by the mixing machine (5) is drawn into a strip shape by the drawing machine (6), sent to the water tank (7) for cooling, and then sent to the granulator (8) for processing to obtain plastic master granules. The bottom of the push plate (44) is provided with an inclined knife plate (441). A stone crusher (28) is arranged between the stone bin (2) and the stone washing machine (21), and the stone crusher (28) is used for crushing the material in the stone bin (2) and sending the crushed material to the stone washing machine (21) for processing.

2. The automatic proportioning, mixing and conveying system for powder / granule of plastic processing according to claim 1, characterized in that: The outlets of the storage tank I (12) and the storage tank II (27) are respectively provided with weighing hoppers.

3. The automatic proportioning, mixing and conveying system for powder / granule of plastic processing according to claim 1, characterized in that: The stone washing machine (21) sends the washed water to the sedimentation tank (9) through a pipeline, the supernatant in the sedimentation tank (9) is sent to the water storage tank (91), and the clean water in the water storage tank (91) is sent to the stone washing machine (21) through the pump II (92).

4. The automatic proportioning, mixing and conveying system for powder / granule of plastic processing according to claim 1, characterized in that: The water in the water tank (7) is filtered through the filter (103), cooled in the cooling tower (102), and then sent to the circulating water tank (10).

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