Raw material drying machine for plastic part production

Abstract

The utility model discloses a raw material drying machine for plastic part production, which relates to the technical field of plastic particle drying and comprises a tank body and a backflow mechanism fixedly mounted on the tank body, a material layer formed by stacking a plurality of groups of raw material particles is arranged in the tank body, and a cavity is formed between the top end of the material layer and the inner top end of the tank body; the backflow mechanism comprises a through pipe, a dehumidification assembly, an air return head, an air inlet head and a fan, the through pipe fixedly penetrates through the inner side and the outer side of the tank body, the air return head is located in the material layer, and the air inlet head is located in the cavity; the dehumidifying device has the advantages that when the fan runs, heat flow in the cavity enters the dehumidifying component through the air inlet head to remove water vapor, and then is discharged into a material layer from the air return head, so that hot air among raw material particles in the material layer can be blown; and the heat flow in the particles in the material layer quickly and comprehensively flows towards the cavity, and the blocked heat flow is pushed in a power-assisted manner, so that the water vapor removal efficiency during heat regeneration operation can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic particle drying technical field, more specifically to a raw material drying machine for plastic part production. BACKGROUND

[0002] The raw material used in plastic part production is usually plastic particles (also known as resin), which can be various types of thermoplastic plastics such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), ABS, etc. Drying treatment of these raw materials before processing is one of the very important steps;

[0003] The existing plastic particle drying equipment, such as "application number: CN202223437098.6, a plastic particle drying device for plastic bag production" and "application number: CN202322733918.4, a plastic particle drying device";

[0004] In the drying process, the structure with heat flow reflux is used to provide energy-saving effect. In the reflux process, "moisture removal assembly" is used to remove water vapor to speed up the drying efficiency. However, the plastic particles occupy the internal space in the processing environment, which blocks the flow of internal air heat flow. Therefore, there is the disadvantage of low efficiency in water vapor removal. UTILITY MODEL CONTENTS

[0005] The utility model discloses a raw material drying machine for plastic part production.

[0006] The utility model discloses a raw material drying machine for plastic part production.

[0007] The utility model discloses a raw material drying machine for plastic part production.

[0008] The reflux mechanism includes a pipe, a moisture removal assembly fixedly connected between the pipes, a gas return head and an air inlet head fixedly connected to the two pipe ends of the pipes respectively, and a fan fixedly connected in the pipe. The pipe is fixedly connected through the inside and outside of the tank. The gas return head is in the material layer, and the air inlet head is in the cavity.

[0009] As a preferred technical scheme of the utility model, the gas return head is close to the bottom end of the tank.

[0010] As a preferred technical scheme of the utility model, the air return head and the air inlet head are both annular pipes, and multiple groups of air holes are evenly arranged on the annular pipes, and the air hole diameter of the annular pipe as the air return head is smaller than the raw material particles.

[0011] As a preferred technical scheme of the utility model, the air fan is close to the air outlet end of the moisture removal assembly.

[0012] As a preferred technical scheme of the utility model, the utility model further comprises a stirring mechanism fixed to the tank body.

[0013] As a preferred technical scheme of the utility model, the stirring mechanism comprises a servo motor fixed to the tank body, a rotating shaft with one shaft end fixed to the servo motor output end, an auger fixed to the other shaft end of the rotating shaft, and multiple groups of mixing rods evenly fixed outside the auger, the rotating shaft penetrates the tank body inside and outside and is rotationally connected between the tank body and the rotating shaft through a bearing, and the auger and the multiple groups of mixing rods are both in the tank body and extend into the material layer.

[0014] As a preferred technical scheme of the utility model, the utility model further comprises a heating plate fixed in the tank body, a temperature sensor fixed outside the tank body, an inlet valve and an outlet valve fixed to the tank body, a support fixed outside the tank body, and a controller fixed to the outside of the support.

[0015] The utility model has the following beneficial effects:

[0016] When the air fan operates, the heat flow in the cavity enters the moisture removal assembly through the air inlet head to remove the water vapor, and then is discharged into the material layer at the air return head, so that the hot air between the raw material particles in the material layer can be blown, the heat flow in the particles in the material layer can flow rapidly and comprehensively towards the cavity, the blocked heat flow can be assisted to push, and the water vapor removal efficiency during the heat recovery operation can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 is a structural schematic view of the utility model air return mechanism.

[0019] Mark: tank body-1, air return mechanism-2, stirring mechanism-3, heating plate-4, temperature sensor-5, inlet valve-6, outlet valve-7, support-8, controller-9, through pipe-21, moisture removal assembly-22, air return head-23, air inlet head-24, air fan-25, servo motor-31, rotating shaft-32, auger-33, mixing rod-34. DETAILED DESCRIPTION

[0020] For example, Figures 1-2As shown, the utility model provides: a raw material dryer for plastic part production, including jar body 1 and its on solidly equipped backflow mechanism 2,

[0021] Still including the heating plate 4 that solidly equipped in jar body 1, produce heat to provide hot environment in jar body 1,

[0022] Solidly equipped temperature sensor 5 on the outside of jar body 1, the sensing end of temperature sensor 5 is penetrated into jar body 1 to sense the temperature in jar body 1,

[0023] Solidly equipped inlet valve 6 and outlet valve 7 on jar body 1, inlet valve 6 and outlet valve 7 can be butterfly valve or gate valve, install inlet valve 6 at the top end of jar body 1 to be used to place the raw material particles to be dried into jar body 1, outlet valve 7 is installed at the bottom end of jar body 1 to be used to discharge the raw material particles after drying to the outside of jar body 1,

[0024] Solidly equipped support 8 on the outside of jar body 1, for placing to provide support stability to jar body 1,

[0025] And solidly equipped controller 9 on the outside of support 8, controller 9 is PLC controller, by controller 9 to connect the external power supply, to provide the on-off of electrical connection for electrical components,

[0026] Jar body 1 is built-in multiple groups of raw material particle accumulation formed material layer, and the top end of the material layer and the top end in jar body 1 form a cavity, Figure 1 As shown, when adding raw material particles by inlet valve 6, add appropriate amount of raw material particles to form a material layer, and do not fill up to form a cavity at the top end in jar body 1,

[0027] Still including stirring mechanism 3 solidly equipped on jar body 1, for mixing when drying the material layer,

[0028] The specific structure of backflow mechanism 2 is as follows:

[0029] Said backflow mechanism 2 includes pipe 21, dehumidification assembly 22 that is solidly equipped and communicated between pipe 21, back gas head 23 and air inlet head 24 that are respectively fixed and communicated at both pipe ends of pipe 21, and fan 25 that is solidly equipped in pipe 21, pipe 21 is fixed and penetrated in and out of jar body 1, back gas head 23 is in material layer, air inlet head 24 is in cavity,

[0030] When the reflux mechanism 2 is applied: when the fan 25 is running, the air suction force is generated to the direction of the air inlet head 24, the air blowing force is generated to the direction of the air inlet head 24, that is, the hot flow in the cavity can enter the dehumidification assembly 22 through the air inlet head 24 to remove the water vapor, and then be discharged to the material layer at the air return head 23, so as to provide the heat recovery effect, and at the same time, the hot air between the particles in the material layer can be blown, so that the hot flow in the particles in the material layer flows quickly and more comprehensively to the cavity, so as to improve the water vapor removal efficiency during the heat recovery operation.

[0031] Wherein, the air return head 23 is close to the bottom end in the tank body 1, as shown in the figure, the air return head 23 is close to the middle lower position in the inside of the tank body 1, so that when the heat recovery is carried out, the hot flow flowing surface in the material layer is larger. Figure 1

[0032] Wherein, the air return head 23 and the air inlet head 24 are annular pipes, and a plurality of groups of air holes are uniformly arranged on the annular pipes, and the air hole diameter of the annular pipe as the air return head 23 is smaller than the raw material particles, as shown in the figure, the annular pipe-shaped air return head 23 and the air inlet head 24 are centrally arranged in the tank body 1, which can more evenly inhale and exhaust the hot flow in the tank body 1, and improve the flow uniformity. Figure 2

[0033] Wherein, the fan 25 is close to the air outlet end of the dehumidification assembly 22, as shown in the figure, the fan 25 is at the bottom end of the dehumidification assembly 22, which is in contact with the hot flow from which the water vapor is removed, and the protection of the fan 25 is better by reducing the contact with the water vapor. Figure 1

[0034] The specific structure of the stirring mechanism 3 is as follows:

[0035] The stirring mechanism 3 includes a servo motor 31 fixed on the tank body 1, a rotating shaft 32 with one end fixed to the output end of the servo motor 31, an auger 33 fixed to the other end of the rotating shaft 32, and a plurality of mixing rods 34 fixed to the outside of the auger 33, the rotating shaft 32 penetrates the inside and outside of the tank body 1 and is rotatably connected between the tank body 1 and the rotating shaft 32, the auger 33 and the plurality of mixing rods 34 are in the tank body 1 and extend into the material layer, the annular pipe-shaped air return head 23 is arranged outside the auger 33, and the annular pipe-shaped air inlet head 24 is arranged outside the rotating shaft 32.

[0036] ​​​The stirring mechanism 3 is applied to: the servo motor 31 is installed in the middle of the top end of the tank body 1, the output end of the servo motor 31 is downward, the rotating shaft 32 is penetrated to the inside of the tank body 1 in the middle of the top end of the tank body 1, the rotating part such as bearing is used to connect the rotating shaft 32 at the penetration position, the top end of the rotating shaft 32 is fixed on the output end of the servo motor 31 to drive synchronous rotation, the bottom end of the rotating shaft 32 is connected with the bottom end of the auger 33, a plurality of groups of mixing rods 34 are uniformly fixed on the periphery of the auger 33, the mixing rods 34 provide stirring to the material layer when rotating, the auger 33 can provide the surge effect of the material layer flowing from bottom to top, so as to further improve the uniformity; and the heat between the particles in the material layer can be uniformly guided to the cavity.

[0037] The control mode of the utility model is controlled by manually starting and closing the switch, and the wiring diagram of the power element and the provision of the power supply are common knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the control mode and the wiring arrangement of the utility model will not be explained in detail.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A raw material dryer for plastic part production, comprising a tank (1) and a reflux mechanism (2) fixed on the tank (1), a material layer formed by a plurality of raw material particles is arranged in the tank (1), and a cavity is formed between the top end of the material layer and the inner top end of the tank (1). characterized in that The reflux mechanism (2) comprises a pipe (21), a moisture removal assembly (22) fixed and communicated between the pipes (21), a return gas head (23) and an air inlet head (24) fixed and communicated at both pipe ends of the pipes (21) respectively, and a fan (25) fixed in the pipes (21), the pipes (21) are fixed and penetrate the inner and outer sides of the tank (1), the return gas head (23) is arranged in the material layer, and the air inlet head (24) is arranged in the cavity.

2. The raw material drying machine for plastic part production according to claim 1, characterized in that, The return gas head (23) is close to the bottom end of the tank (1).

3. The raw material drying machine for plastic part production according to claim 1, characterized in that, The return gas head (23) and the air inlet head (24) are both annular pipes, a plurality of air holes are uniformly arranged on the annular pipes, and the air hole diameter of the annular pipe serving as the return gas head (23) is smaller than the raw material particles.

4. The raw material drying machine for plastic part production according to claim 1, characterized in that, The fan (25) is close to the air outlet end of the moisture removal assembly (22).

5. The raw material drying machine for plastic part production according to claim 1, characterized in that, Further comprising a stirring mechanism (3) fixed on the tank (1).

6. The raw material drying machine for plastic part production according to claim 5, characterized in that, The stirring mechanism (3) comprises a servo motor (31) fixed on the tank (1), a rotating shaft (32) with one shaft end fixed to the output end of the servo motor (31), an auger (33) fixed to the other shaft end of the rotating shaft (32), and a plurality of mixing rods (34) fixed on the outer side of the auger (33), the rotating shaft (32) penetrates the inner and outer sides of the tank (1) and is rotatably connected between the tank (1) and the rotating shaft (32) through a bearing, and the auger (33) and the plurality of mixing rods (34) are arranged in the tank (1) and extend into the material layer.

7. The raw material drying machine for plastic part production according to claim 6, characterized in that, Further comprising a heating plate (4) fixed in the tank (1), a temperature sensor (5) fixed outside the tank (1), an inlet valve (6) and an outlet valve (7) fixed on the tank (1), a support (8) fixed outside the tank (1), and a controller (9) fixed on the outer side of the support (8).

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