CN210651440U

CN210651440U - Hot air dryer for injection molding

Info

Publication number: CN210651440U
Application number: CN201921293269.8U
Authority: CN
Inventors: 王万方
Original assignee: Nanjing Fangerda Plastic Products Co Ltd
Current assignee: Nanjing Fangerda Plastic Products Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-06-02
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a hot air dryer for injection molding, including a drying cylinder, the feeder hopper of setting at the drying cylinder top and the air heater of setting in drying cylinder one side, still include the air-supply line that sets up at the drying cylinder inner wall and along its direction of height spiral lift, set up in the drying cylinder and with its axial syntropy (mixing) shaft and drive the first motor of (mixing) shaft rotation, the air-supply line is equipped with a plurality of exhaust vents towards the lateral wall equipartition of (mixing) shaft, the outer wall of (mixing) shaft is equipped with a plurality of stirring pieces along its length direction at equal intervals, be equipped with first cavity in the (mixing) shaft, be equipped with the adjusting part who is used for adjusting the angle between stirring piece and the (mixing) shaft in the first cavity, the exhaust pipe of air heater extends to in the; this desiccator is through diversely stirring the raw materials for the raw materials thermally equivalent is dry, thereby has improved the drying effect to the raw materials.

Description

Hot air dryer for injection molding

Technical Field

The utility model relates to a technical field of plastics processing, in particular to hot air drying machine for moulding plastics.

Background

The plastic is a high molecular compound polymerized by addition polymerization or polycondensation reaction using monomer as raw material, commonly called plastic or resin, and because of the molecular structure relationship, part of the plastic has certain water absorption, and the water content in the plastic particles is large, so that the plastic particles can generate material flowers and bubbles during molding, and the performance is reduced, therefore, when the plastic particles are processed, the plastic particles need to be dried, and the plastic particles are generally dried by using a plastic dryer at present.

However, the existing drying machine has the following use limitations: when dry to plastic granules, utilize hot-air and raw materials to carry out the heat exchange, and then take away the moisture in the raw materials to reach dry effect, owing to only through hot air drying, lead to the drying of raw materials not thorough, and drying time is longer, lead to the raw materials inhomogeneous that is heated easily, make the water content have great difference, drying efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hot air drying machine for moulding plastics, its advantage is: this desiccator is through diversely stirring the raw materials for the raw materials thermally equivalent is dry, thereby has improved the drying effect to the raw materials.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a hot air drying machine for moulding plastics, includes the drying cylinder, sets up the feeder hopper at the drying cylinder top and sets up the air heater in drying cylinder one side, still including setting up at the drying cylinder inner wall and along its direction of height spiral rising air-supply line, set up in the drying cylinder and rather than axial syntropy (mixing) shaft and drive (mixing) shaft pivoted first motor, the air-supply line is equipped with a plurality of exhaust vents towards the lateral wall equipartition of (mixing) shaft, the outer wall of (mixing) shaft is equipped with equidistant range along its length direction and has a plurality of stirring pieces, be equipped with first cavity in the (mixing) shaft, be equipped with the adjusting part who is used for adjusting the angle between stirring piece and the (mixing) shaft in the first cavity, the exhaust pipe of air heater extends to in the drying cylinder.

According to the technical scheme, firstly, materials are placed into the drying cylinder through the feed hopper; secondly, air is supplied to the air inlet pipe through the air heater, and the air inlet pipe extends spirally along the inner wall of the drying cylinder, so that the materials are dried by hot air in all directions, and the drying effect is enhanced; then starting a first motor, driving a stirring shaft to rotate, and further driving a stirring piece to stir the material, so that the material is fully contacted with hot air; after stirring for a period of time; the angle between the stirring piece and the outer wall of the stirring shaft is changed through the adjusting assembly, so that the stirring direction of the materials can be adjusted, and the materials can be fully stirred; adopt the desiccator that above-mentioned structure constitutes through diversely stirring to the raw materials for the raw materials thermally equivalent is dry, has improved the drying effect to the raw materials.

The utility model discloses further set up to: the stirring piece comprises a plurality of stirring blades which are hinged on the outer wall of the stirring shaft and are arranged along the circumferential direction of the stirring shaft.

Through above-mentioned technical scheme, stirring vane arranges along the circumference of (mixing) shaft, has increased the area of contact with the material, has improved the stirring effect to the material.

The utility model discloses further set up to: the adjusting assembly comprises a screw rod which is rotatably connected in the first cavity and is in the same direction as the axial direction of the stirring shaft, a slider nut in threaded fit with the screw rod, an adjusting rod hinged on the side wall of the slider nut and a second motor for driving the screw rod to rotate, the side wall of the adjusting rod, far away from the slider nut, extends out of the side wall of the stirring shaft and is hinged with the side wall of the stirring blade, and the outer wall of the stirring shaft is reversely provided with an opening for the adjusting rod to slide along the length of the outer wall.

According to the technical scheme, the second motor is started, the screw rod rotates, the opening has a limiting effect on the movement of the adjusting rod, and the two ends of the adjusting rod are respectively hinged with the stirring blade and the sliding block nut, so that the sliding block nut can be driven to slide along the length direction of the screw rod; when the sliding block nut moves downwards along the length direction of the screw rod, the angle between the adjusting rod and the sliding block nut is gradually increased, and further the angle between the stirring blade and the outer wall of the stirring shaft is gradually increased; otherwise, the same principle is carried out; this adjustment mode, through reciprocating of drive slider nut, and then adjustable stirring vane's angle to can be with the material intensive mixing even, make hot-blast and material fully contact, improved the drying effect to the material.

The utility model discloses further set up to: the memory sponge telescopic ring is arranged on the side wall of the opening, the inner ring of the memory sponge telescopic ring is attached to the outer wall of the adjusting rod, and the memory sponge telescopic ring stretches along the width direction of the opening.

Through above-mentioned technical scheme, because the memory sponge has good elasticity, the inner ring of memory sponge expansion ring closely laminates with the outer wall of adjusting the pole, can fill the gap between opening lateral wall and the regulation pole outer wall, avoids the material to fall into first cavity in, influences the rotation of lead screw, has improved the stability of adjusting stirring vane.

The utility model discloses further set up to: the outer wall of the stirring blade is rotatably connected with a plurality of drying blocks along the length direction.

Through above-mentioned technical scheme, set up dry piece, realized that stirring vane is when stirring the material, dry piece rotation, and then improved the stirring effect to the material.

The utility model discloses further set up to: the drying block is internally provided with a second cavity, the second cavity is filled with a drying particle layer, and the outer wall of the reinforcing plate is uniformly provided with a plurality of volatilization holes.

Through above-mentioned technical scheme, at dry piece rotation in-process, the inside dry grained layer accessible of second cavity volatilizees the moisture in the hole absorption material granule, has improved the drying effect to the material.

The utility model discloses further set up to: the drying particle layer is a calcium chloride drying agent layer.

Through the technical scheme, the calcium chloride drying agent has the effects of high adsorption speed, high adsorption capacity, no toxicity, no odor, no environmental pollution and the like, and further enhances the drying effect on materials.

The utility model discloses further set up to: and a filter screen is arranged on the wall of the air inlet pipe positioned on the air outlet hole, and the diameter size of meshes of the filter screen is smaller than the average size of particles.

Through above-mentioned technical scheme, set up the filter screen, can avoid in material granule gets into the air-intake pipe through the exhaust vent, influence is aired exhaust.

To sum up, the utility model discloses following beneficial effect has:

1. firstly, putting a material into a drying cylinder through a feed hopper; secondly, air is supplied to the air inlet pipe through the air heater, and the air inlet pipe extends spirally along the inner wall of the drying cylinder, so that the materials are dried by hot air in all directions, and the drying effect is enhanced; then starting a first motor, driving a stirring shaft to rotate, and further driving a stirring piece to stir the material, so that the material is fully contacted with hot air; after stirring for a period of time; the angle between the stirring piece and the outer wall of the stirring shaft is changed through the adjusting assembly, so that the stirring direction of the material can be adjusted, the material can be stirred in multiple directions, and the drying effect of the material is improved;

2. the second motor is started, the screw rod rotates, the opening has a limiting effect on the movement of the adjusting rod, and two ends of the adjusting rod are respectively hinged with the stirring blade and the sliding block nut, so that the sliding block nut can be driven to slide along the length direction of the screw rod; when the sliding block nut moves downwards along the length direction of the screw rod, the angle between the adjusting rod and the sliding block nut is gradually increased, and further the angle between the stirring blade and the outer wall of the stirring shaft is gradually increased; otherwise, the same principle is carried out; the angle of the stirring blade can be adjusted by driving the sliding block nut to move up and down, so that the materials can be fully and uniformly stirred, hot air is fully contacted with the materials, and the drying effect on the materials is improved;

3. during the rotation of the drying block, the drying particle layer inside the second cavity can absorb moisture in the material particles through the volatilization holes, so that the drying effect on the material is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic sectional structure view from above for embodying the drying cylinder in the present embodiment.

Fig. 3 is an enlarged schematic diagram of a layout for embodying a in fig. 2.

Reference numerals: 1. a drying cylinder; 2. a feed hopper; 3. a hot air blower; 4. an air inlet pipe; 5. a stirring shaft; 6. a first motor; 7. an air outlet; 8. a stirring member; 81. a stirring blade; 9. a first cavity; 10. an adjustment assembly; 101. a screw rod; 102. a slider nut; 103. adjusting a rod; 104. a second motor; 11. an air outlet pipe; 12. an opening; 13. a memory sponge expansion ring; 14. drying the blocks; 15. a second cavity; 16. drying the particulate layer; 17. a volatilization hole; 18. and (4) a filter screen.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a hot air dryer for injection molding, referring to fig. 1, comprises a drying cylinder 1, wherein the top of the drying cylinder 1 is provided with a feed hopper 2, and one side of the drying cylinder 1 is connected with an air heater 3; the material is placed in the drying cylinder 1 through the feed hopper 2, and hot air can be blown out of the material through the hot air blower 3 for drying.

Referring to fig. 1 and 2, an air inlet pipe 4 is spirally raised along the height direction of the inner wall of the drying cylinder 1, the air inlet pipe 4 is a spiral coil pipe, an air outlet pipe 11 of the air heater 3 extends into the drying cylinder 1 and is communicated with one end of the bottom of the air inlet pipe 4, and a plurality of air outlet holes 7 are arranged at equal intervals on the inner wall of the air inlet pipe 4 deviating from the drying cylinder 1; air is supplied to the air inlet pipe 4 through the air heater 3, and then the air is discharged to the inside of the drying cylinder 1 through the air outlet pipe 11, so that the all-dimensional air supply to the inside of the drying cylinder 1 is realized, the air blowing area of the material is increased, and the drying effect of the material is further improved.

Referring to fig. 2, a filter screen 18 is arranged on the wall of the air inlet pipe 4 positioned on the air outlet 7, and the diameter size of the meshes of the filter screen 18 is smaller than the average size of the particles; due to the arrangement of the filter screen 18, the situation that the material particles enter the air inlet pipe 4 through the air outlet 7 to affect air exhaust can be avoided.

Referring to fig. 2, a first motor 6 is arranged on one side of the top wall of the drying cylinder 1, which is located at the feed hopper 2, a driving shaft of the first motor 6 extends into the drying cylinder 1 and is connected with a stirring shaft 5, a plurality of stirring parts 8 (preferably three groups) are arranged on the outer wall of the stirring shaft 5 at equal intervals along the length direction of the stirring shaft, a first cavity 9 is arranged in the stirring shaft 5, and an adjusting component 10 for adjusting the angle between the stirring parts 8 and the stirring shaft 5 is arranged in the first cavity 9; firstly, the stirring shaft 5 is driven to rotate by the first motor 6, and then the stirring piece 8 can be driven to stir the materials, so that the materials are fully contacted with hot air, and the drying effect is improved; after stirring a period of time, will stir 8 adjustment to suitable angle through adjusting part 10, and then can change the stirring direction to the material for the material can the thermally equivalent drying, thereby has improved the drying effect to the material.

Referring to fig. 2, the stirring member 8 includes a plurality of stirring blades 81 (preferably 4) hinged to the outer wall of the stirring shaft 5 and arranged along the circumferential direction thereof; stirring vane 81 arranges along the circumference of (mixing) shaft 5, and stirring 8 is arranged along the length direction of (mixing) shaft 5 equidistant, has increased the area of contact of stirring vane 81 with the material, has improved the stirring effect to the material.

Referring to fig. 2, the adjusting assembly 10 includes a screw 101 rotatably connected in the first cavity 9, a slider nut 102 in threaded fit with the screw 101, an adjusting rod 103 hinged on a side wall of the slider nut 102, and a second motor 104 driving the screw 101 to rotate, an axial direction of the screw 101 is the same as a length direction of the stirring shaft 5, a side wall of the adjusting rod 103 far away from the slider nut 102 extends out of a side wall of the stirring shaft 5 and is hinged with a side wall of the stirring blade 81, and an opening 12 for the adjusting rod 103 to slide is reversely arranged on an outer wall of the stirring shaft 5 along the length direction; the second motor 104 is started, the screw 101 rotates, the opening 12 has a limiting effect on the movement of the adjusting rod 103, and two ends of the adjusting rod 103 are respectively hinged with the stirring blade 81 and the sliding block nut 102, so that the sliding block nut 102 can be driven to slide along the length direction of the screw 101; when the sliding block nut 102 moves downwards along the length direction of the screw rod 101, the angle between the adjusting rod 103 and the sliding block nut 102 is gradually increased, and further the angle between the stirring blade 81 and the outer wall of the stirring shaft 5 is gradually increased; otherwise, the same principle is carried out; this adjustment mode, through reciprocating of drive slider nut 102, and then adjustable stirring vane 81's angle to can be with the material intensive mixing even, make hot-blast and material fully contact, improved the drying effect to the material.

Referring to fig. 2 and 3, a memory sponge telescopic ring 13 is arranged on the side wall of the opening 12, the inner ring of the memory sponge telescopic ring 13 is attached to the outer wall of the adjusting rod 103, and the memory sponge telescopic ring 13 extends and retracts along the width direction of the opening 12; because the memory sponge has good flexibility, when the adjusting rod 103 is displaced, the inner ring of the memory sponge telescopic ring 13 is tightly attached to the outer wall of the adjusting rod 103, so that a gap between the side wall of the opening 12 and the outer wall of the adjusting rod 103 can be filled, the material is prevented from entering the first cavity 9 to influence the rotation of the screw rod 101, and the stability of adjusting the stirring blades 81 is improved.

Referring to fig. 2 and 3, the outer wall of the stirring blade 81 is rotatably connected with a plurality of drying blocks 14 along the length direction thereof; the setting of dry block 14, stirring vane 81 are when stirring the material, and dry block 14 rotation has improved the stirring effect to the material.

Referring to fig. 3, a second cavity 15 is arranged in the drying block 14, the second cavity 15 is filled with a drying particle layer 16, the drying particle layer 16 is a calcium chloride drying agent layer, a plurality of volatilization holes 17 are uniformly distributed on the outer wall of the drying block 14, and the diameter size of the volatilization holes 17 is smaller than the average size of material particles; in the rotation process of the drying block 14, the drying particle layer 16 in the second cavity 15 can absorb moisture in the material particles through the volatilization holes 17, and the calcium chloride drying agent has high adsorption speed, high adsorption capacity, no toxicity, no odor and no environmental pollution, thereby further enhancing the drying effect on the material.

The working process is as follows: firstly, starting a second motor 104, when a sliding block nut 102 moves downwards along the length direction of a screw rod 101, the angle between a stirring blade 81 and a stirring shaft 5 is gradually increased, and when the angle is adjusted to a proper position, a material is put into a drying cylinder 1 through a feed hopper 2; secondly, the first motor 6 is started, the stirring shaft 5 rotates to stir the materials, and the hot air blower 3 is started to supply hot air to the air inlet pipe 4, so that when the materials are stirred, the hot air can dry the moisture on the materials; meanwhile, in the stirring process, the drying block 14 rotates, and the calcium chloride drying agent in the drying block can adsorb moisture on the particles through the volatilization holes 17, so that the drying effect on the materials is further enhanced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a mould plastics and use hot air drying machine, includes drying cylinder (1), sets up feeder hopper (2) and hot-air blower (3) of setting in drying cylinder (1) one side at drying cylinder (1) top, its characterized in that: still including setting up air-supply line (4) at drying cylinder (1) inner wall and along its direction of height spiral rising, setting up in drying cylinder (1) and with its axial syntropy (mixing) shaft (5) and drive (mixing) shaft (5) pivoted first motor (6), air-supply line (4) are equipped with a plurality of exhaust vents (7) towards the lateral wall equipartition of (mixing) shaft (5), the outer wall of (mixing) shaft (5) is equipped with equidistant range along its length direction has a plurality of stirring pieces (8), be equipped with first cavity (9) in (mixing) shaft (5), be equipped with in first cavity (9) and be used for adjusting part (10) of angle between stirring piece (8) and (mixing) shaft (5), air-out pipe (11) of air heater (3) extend to in drying cylinder (1) and link to each other with air-supply line (4).

2. The hot air dryer for injection molding according to claim 1, characterized in that: the stirring piece (8) comprises a plurality of stirring blades (81) which are hinged on the outer wall of the stirring shaft (5) and are arranged along the circumferential direction of the stirring shaft.

3. The hot air dryer for injection molding according to claim 2, characterized in that: adjusting part (10) including rotate connect in first cavity (9) and with (mixing) shaft (5) axial syntropy lead screw (101), with lead screw (101) screw-thread fit's slider nut (102), articulate regulation pole (103) and drive lead screw (101) pivoted second motor (104) on slider nut (102) lateral wall, adjust the lateral wall that slider nut (102) was kept away from in pole (103) and extend outside the lateral wall of (mixing) shaft (5) and articulated with the lateral wall of stirring vane (81), the outer wall of (mixing) shaft (5) is equipped with opening (12) that supply regulation pole (103) to slide along its length reversal.

4. The hot air dryer for injection molding according to claim 3, characterized in that: the side wall of opening (12) is equipped with memory sponge expansion ring (13), the inner ring of memory sponge expansion ring (13) and the outer wall laminating of adjusting pole (103), memory sponge expansion ring (13) are flexible along the width direction of opening (12).

5. The hot air dryer for injection molding according to claim 2, characterized in that: the outer wall of the stirring blade (81) is rotatably connected with a plurality of drying blocks (14) along the length direction.

6. The hot air dryer for injection molding according to claim 5, characterized in that: the drying block is characterized in that a second cavity (15) is formed in the drying block (14), a drying particle layer (16) is filled in the second cavity (15), and a plurality of volatilization holes (17) are uniformly distributed in the outer wall of the drying block (14).

7. The hot air dryer for injection molding according to claim 6, characterized in that: the drying particle layer (16) is a calcium chloride drying agent layer.

8. The hot air dryer for injection molding according to claim 1, characterized in that: the air inlet pipe (4) is provided with a filter screen (18) on the wall of the air outlet (7), and the diameter of the meshes of the filter screen (18) is smaller than the average size of the particles.