A plastic raw material metal separation device

Abstract

The utility model discloses a kind of plastic raw material metal separation devices, belong to metal separation device technical field, including rack, the top of rack is equipped with metal separator, the top of metal separator is equipped with material cylinder, rotating valve for controlling discharging speed and discharging amount is installed between metal separator and material cylinder, the top of material cylinder is fixedly connected with processing cylinder, processing cylinder inner bottom is fixedly connected with shell, the inside of shell is equipped with driven pulley, driven pulley is rotatably connected with shell by rotating rod of top and bottom, by setting rotating valve between metal separator and material cylinder, discharging speed and discharging amount can be accurately controlled, avoid raw material to form " material accumulation layer " in detection cavity, let raw material pass through high-frequency magnetic field in dispersed state, effectively reduce the situation that metal foreign matter is wrapped by raw material and escapes detection, especially can improve the detection rate of small metal scrap and non-magnetic metal, solve the problem of low separation qualified rate.

Description

Technical Field

[0001] This utility model relates to the technical field of metal separation devices, and in particular to a metal separation device for plastic raw materials. Background Technology

[0002] A metal separator is an electronic instrument that detects and separates metallic impurities based on the principle of electromagnetic induction. It is widely used in quality control processes on production lines in industries such as food, pharmaceuticals, chemicals, and plastics. Its core function is to generate a high-frequency magnetic field through a transmitting coil to detect metallic foreign objects such as iron, copper, aluminum, and stainless steel in materials, and to link with an automatic rejection device to achieve impurity separation. The protection level can reach IP65.

[0003] In the existing technology, in order to avoid the metal foreign objects in the plastic raw materials causing wear and damage to the equipment or causing product defects when the equipment is processing plastic raw materials, it is necessary to separate the metal foreign objects in the plastic raw materials through a metal separator before use.

[0004] The metal separation process for plastic raw materials typically adopts a single mode of "bulk feeding - metal separator detection - impurity removal". However, this metal separation device has the following problems in practical applications:

[0005] I. Existing devices often directly feed plastic raw materials into the material cylinder in batches. When a large amount of raw material floods into the detection chamber of the metal separator at one time, it is easy to form a "material accumulation layer". The particles block each other, causing some metal foreign objects to be wrapped by the raw material and unable to fully contact the high-frequency magnetic field, thus escaping detection. Especially when the raw material contains fine metal fragments or non-magnetic metals, the detection sensitivity is further reduced, and the separation qualification rate is difficult to meet the requirements of high-precision production.

[0006] Second, plastic raw materials are prone to absorbing moisture and clumping during storage, or irregular flocculent particles may be generated during crushing and processing. When such raw materials are directly introduced into the material cylinder, on the one hand, they are prone to forming "bridging" or adhering and accumulating in the material cylinder and detection chamber channels. Due to their poor flowability, they cause poor material discharge and equipment blockage, requiring frequent shutdowns for cleaning, which seriously affects the continuity of the production line. On the other hand, clumped raw materials will increase the material handling load of the metal separator, resulting in a mismatch between the detection speed and the material discharge speed. Some materials will be discharged without being fully detected, further reducing the separation quality.

[0007] Therefore, in order to solve the above-mentioned technical problems, this utility model proposes a plastic raw material metal separation device. Utility Model Content

[0008] The main objective of this invention is to provide a metal separation device for plastic raw materials, which can effectively solve the problems in the background art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A metal separation device for plastic raw materials includes a frame, and a metal separator is installed on the top of the frame;

[0011] A material cylinder is provided above the metal separator, and a rotary valve for controlling the feeding speed and feeding amount is installed between the metal separator and the material cylinder.

[0012] A processing cylinder is fixedly connected to the top of the material cylinder, and a housing is fixedly connected to the bottom of the processing cylinder. A driven pulley is provided inside the housing. The driven pulley is rotatably connected to the housing through rotating rods at the top and bottom. A crushing component for extruding and crushing plastic raw materials is installed at the top of the rotating rod.

[0013] The bottom end of the rotating rod is equipped with a stirring component for stirring the material in the barrel;

[0014] The outer wall of the barrel is equipped with a drive component for driving the driven pulley to rotate.

[0015] Furthermore, a raw material discharge port is installed at the bottom of the metal separator, and a raw material collection box is placed below the raw material discharge port. A metal foreign object discharge port is also installed on one side of the metal separator, and a metal foreign object collection box is placed below the metal foreign object discharge port.

[0016] Furthermore, the crushing component includes a crushing cone, the rotating rod is rotatably connected to the rotating holes opened at the top and bottom of the housing, the crushing cone is fixedly connected to the top of the rotating rod at the top of the driven pulley, a guide cone is fixedly connected to the top of the crushing cone, and an inverted conical bucket is installed above the guide cone and at the top of the processing cylinder.

[0017] Furthermore, the bottom diameter of the extrusion cone is larger than the top diameter, and a gap is formed between the extrusion cone and the processing cylinder for crushing the plastic raw material. The guide cone is a pointed cone shape, and the bottom diameter of the guide cone is the same as the top diameter of the extrusion cone.

[0018] Furthermore, the stirring component includes a stirring shaft and stirring rods. The stirring shaft is fixedly connected to the bottom end of the rotating rod at the bottom of the driven pulley. Several stirring rods for stirring the material in the barrel are fixedly connected to the outer wall of the stirring shaft in a vertical array and a circular array. The length of the stirring rods is adapted to the inner diameter of the barrel.

[0019] Furthermore, the driving component includes a drive motor, a mounting base is fixedly connected to the outer wall of the material cylinder, the drive motor is fixedly connected to the bottom of the mounting base, a drive pulley is fixedly connected to the output end of the drive motor, and a tension belt is fitted between the drive pulley and the driven pulley.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By installing a rotary valve between the metal separator and the material cylinder, the feeding speed and amount can be precisely controlled, avoiding the formation of a "material accumulation layer" in the detection chamber. The material is then dispersed and passes through the high-frequency magnetic field, effectively reducing the situation where metal foreign objects are wrapped by the material and escape detection. In particular, it can improve the detection rate of fine metal fragments and non-magnetic metals, solving the problem of low separation qualification rate.

[0022] Meanwhile, the crushing component inside the top of the feed cylinder can crush agglomerated raw materials, preventing the raw materials from being wrapped with metal foreign objects and affecting the subsequent separation effect. The bottom stirring component can continuously stir the raw materials in the feed cylinder to break the adhesion of particles, prevent "bridging" or adhesion and accumulation, and improve the flowability of raw materials in the feed cylinder. Moreover, the two are driven synchronously by the same drive component, which not only avoids frequent shutdowns caused by raw material blockage, but also improves the smoothness of material feeding and ensures the continuity of the production line. It also eliminates the need for an additional drive mechanism, simplifies the structure and reduces energy consumption and maintenance costs, thereby improving the quality and efficiency of metal separation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the processing cylinder of this utility model;

[0025] Figure 3 This is a schematic diagram showing the disassembled internal structure of the processing cylinder of this utility model;

[0026] Figure 4 This is a cross-sectional view of the internal structure of the processing cylinder of this utility model.

[0027] In the diagram: 1. Frame; 2. Metal separator; 3. Raw material discharge port; 4. Metal foreign object discharge port; 5. Raw material collection box; 6. Metal foreign object collection box; 7. Material cylinder; 8. Rotary valve; 9. Processing cylinder; 10. Mounting base; 11. Housing; 12. Rotating hole; 13. Driven pulley; 14. Rotating rod; 15. Drive motor; 16. Drive pulley; 17. Tensioning belt; 18. Extrusion cone; 19. Guide cone; 20. Conical hopper; 21. Agitator shaft; 22. Agitator rod. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Moreover, the features in the embodiments of the present invention can be combined with each other without conflict.

[0029] like Figure 1 - Figure 4 As shown, a plastic raw material metal separation device includes a frame 1, and a metal separator 2 is installed on the top of the frame 1.

[0030] A material cylinder 7 is provided above the metal separator 2, and a rotary valve 8 is installed between the metal separator 2 and the material cylinder 7 to control the feeding speed and feeding amount.

[0031] The top of the material cylinder 7 is fixedly connected to the processing cylinder 9, and the bottom of the processing cylinder 9 is fixedly connected to the housing 11. The housing 11 is provided with a driven pulley 13. The driven pulley 13 is rotatably connected to the housing 11 through the top and bottom rotating rods 14. The top of the top rotating rod 14 is equipped with a crushing component for extruding and crushing plastic raw materials.

[0032] The bottom end of the bottom rotating rod 14 is equipped with a stirring component for stirring the material in the material cylinder 7;

[0033] A drive component for driving the driven pulley 13 to rotate is installed on the outer wall of the barrel 7.

[0034] like Figure 1 As shown, the metal separator 2 has a raw material discharge port 3 at its bottom, a raw material collection box 5 below the raw material discharge port 3, a metal foreign object discharge port 4 on one side of the metal separator 2, and a metal foreign object collection box 6 below the metal foreign object discharge port 4. After the metal separator 2 detects metal foreign objects in the plastic raw material through the principle of electromagnetic induction, it will guide the qualified metal-free raw material to the raw material discharge port 3 at its bottom. The qualified raw material falls naturally along the raw material discharge port 3 and finally falls into the raw material collection box 5 below. At the same time, the raw material containing metal foreign objects will be guided by the rejection mechanism of the metal separator 2 to the metal foreign object discharge port 4 on its side. After the raw material containing metal foreign objects is discharged from the metal foreign object discharge port 4, it falls into the corresponding metal foreign object collection box 6 below. The technology of metal separation of plastic raw materials by the frame 1 is existing technology and will not be described in detail here.

[0035] like Figure 2 - Figure 4As shown, the crushing component includes an extrusion cone 18, a rotating rod 14 rotatably connected to the rotating holes 12 opened at the top and bottom of the housing 11, an extrusion cone 18 fixedly connected to the top of the rotating rod 14 at the top of the driven pulley 13, a guide cone 19 fixedly connected to the top of the extrusion cone 18, an inverted conical hopper 20 installed above the guide cone 19 and at the top of the processing cylinder 9, after the plastic raw material is put into the processing cylinder 9, it is first received by the inverted conical hopper 20 at the top of the processing cylinder 9, the inclined surface of the conical hopper 20 guides the raw material to converge towards the center and fall into the guide cone 19 below, the pointed cone-shaped guide cone 19 evenly distributes the raw material to the area around the extrusion cone 18 connected at its bottom, when the extrusion cone 18 rotates, the gap formed between the extrusion cone 18 and the inner wall of the processing cylinder 9 exerts a squeezing effect on the distributed raw material, completing the crushing operation, which can effectively crush the moisture-absorbing and agglomerated, irregular flocculent raw material into uniform particles, providing a raw material with high dispersion for the subsequent metal detection process;

[0036] like Figure 2 - Figure 4 As shown, the bottom diameter of the extrusion cone 18 is larger than the top diameter, and a gap is formed between the extrusion cone 18 and the processing cylinder 9 to crush the plastic raw material, so that its outer wall forms an inclined extrusion surface. With the fixed gap of the processing cylinder 9, the extrusion force on the raw material gradually increases from the top to the bottom when rotating, ensuring that the agglomerated raw material is fully crushed during the process from contact to separation. The guide cone 19 is a pointed cone shape, and the bottom diameter of the guide cone 19 is the same as the top diameter of the extrusion cone 18. It can quickly divert the raw material through the pointed cone surface, and can also make the diverted raw material accurately connect to the top of the extrusion cone 18, avoiding the raw material from falling into the non-crushing area.

[0037] like Figure 2 - Figure 4 As shown, the agitator includes an agitator shaft 21 and agitator rods 22. The agitator shaft 21 is fixedly connected to the bottom end of the rotating rod 14 at the bottom of the driven pulley 13. Several agitator rods 22 for agitating the material in the material cylinder 7 are fixedly connected to the outer wall of the agitator shaft 21 in a vertical array and a ring array. The length of the agitator rods 22 is adapted to the inner diameter of the material cylinder 7. When the agitator shaft 21 rotates, the agitator rods 22 distributed in a vertical array and a ring array on the outer wall of the agitator shaft 21 rotate synchronously with the shaft. Since the length of the agitator rods 22 is adapted to the inner diameter of the material cylinder 7, they can cover most of the area inside the material cylinder 7 during rotation, generating a stirring and turning effect on the raw material, breaking the adhesion between the raw material particles, effectively preventing the raw material from adhering and accumulating on the inner wall of the material cylinder 7 or forming a "bridging" structure, ensuring that the raw material is always in a loose and flowing state, and providing a stable supply of raw material for the subsequent precise material control by the rotary valve 8.

[0038] like Figure 2 - Figure 4As shown, the driving component includes a drive motor 15. A mounting base 10 is fixedly connected to the outer wall of the material cylinder 7. The drive motor 15 is fixedly connected to the bottom of the mounting base 10. A drive pulley 16 is fixedly connected to the output end of the drive motor 15. A tension belt 17 is fitted between the drive pulley 16 and the driven pulley 13. When the drive motor 15 fixed to the bottom of the mounting base 10 on the outer wall of the material cylinder 7 is started, the output end of the drive motor 15 drives the drive pulley 16 to rotate. The drive pulley 16 transmits power to the driven pulley 13 in the inner shell 11 of the processing cylinder 9 through the tension belt 17. The tension belt 17 can ensure friction during the transmission process and avoid slippage. The driven pulley 13 transmits power to the extrusion cone 18 and the stirring shaft 21 through the rotating rods 14 at the top and bottom, respectively, to realize the synchronous driving of crushing and stirring actions.

[0039] The working principle of this plastic raw material metal separation device is as follows:

[0040] Plastic raw materials are fed from the top of the processing cylinder 9 and guided by the inverted conical hopper 20 at the top of the cylinder 9, falling onto the guide cone 19 below. The pointed guide cone 19 evenly distributes the raw materials around the extrusion cone 18 connected to its bottom. At this time, the drive motor 15 on the mounting base 10 on the outer wall of the cylinder 7 starts, and its output end drives the drive pulley 16 to rotate. The drive pulley 16 is driven by the tension belt 17, causing the driven pulley 13 in the bottom housing 11 of the processing cylinder 9 to rotate synchronously. The driven pulley 13 is driven by the top rotation Rod 14 rotates within the rotating hole 12 at the top of housing 11, driving the extrusion cone 18 to rotate. Because the bottom diameter of the extrusion cone 18 is larger than the top diameter, and a crushing gap is formed between it and the processing cylinder 9, the rotating extrusion cone 18 crushes the agglomerated and flocculent raw materials diverted there. The crushed raw materials fall into the lower material cylinder 7. At the same time, the driven pulley 13 drives the stirring shaft 21 inside the material cylinder 7 to rotate via the bottom rotating rod 14. The outer wall of the stirring shaft 21 is arranged in a vertical and circular array, and its length is equal to the inner diameter of the material cylinder 7. The matching stirring rod 22 rotates accordingly, continuously stirring the raw material in the barrel 7 to prevent the raw material from "bridging" or sticking together, ensuring the flowability of the raw material. Subsequently, the rotary valve 8 between the bottom of the barrel 7 and the metal separator 2 is activated, precisely controlling the feeding speed and amount of the raw material, and evenly conveying the processed raw material in the barrel 7 to the metal separator 2 installed on the top of the frame 1. The metal separator 2 generates a high-frequency magnetic field through the principle of electromagnetic induction to detect metal in the passing raw material. Since the lumpy plastic raw material is crushed, it can avoid metal foreign objects being wrapped inside the plastic raw material, so that the metal foreign objects in the plastic raw material can be effectively detected and separated. The qualified raw material is discharged from the raw material discharge port 3 at the bottom of the metal separator 2 and falls into the raw material collection box 5 below. The raw material containing metal foreign objects is removed by the internal rejection device and guided to the metal foreign object discharge port 4 on the side of the metal separator 2 and falls into the corresponding metal foreign object collection box 6, finally completing the metal separation operation of the plastic raw material.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal separation device for plastic raw materials, comprising a frame (1), wherein a metal separator (2) is installed on the top of the frame (1); characterized in that A material cylinder (7) is provided above the metal separator (2), and a rotary valve (8) for controlling the feeding speed and feeding amount is installed between the metal separator (2) and the material cylinder (7); The top of the material cylinder (7) is fixedly connected to the processing cylinder (9), and the bottom of the processing cylinder (9) is fixedly connected to the housing (11). The housing (11) is provided with a driven pulley (13), which is rotatably connected to the housing (11) through rotating rods (14) at the top and bottom. The top of the rotating rod (14) is equipped with a crushing component for extruding and crushing plastic raw materials. The bottom end of the rotating rod (14) at the bottom is equipped with a stirring component for stirring the material in the material cylinder (7); The outer wall of the barrel (7) is equipped with a drive component for driving the driven pulley (13) to rotate.

2. The plastic feedstock metal separation device of claim 1, wherein: The bottom of the metal separator (2) is equipped with a raw material discharge port (3), and a raw material collection box (5) is placed below the raw material discharge port (3). A metal foreign object discharge port (4) is also installed on one side of the metal separator (2), and a metal foreign object collection box (6) is placed below the metal foreign object discharge port (4).

3. The plastic feedstock metal separation device of claim 1, wherein: The crushing component includes a crushing cone (18), the rotating rod (14) is rotatably connected to the rotating holes (12) opened at the top and bottom of the housing (11), the crushing cone (18) is fixedly connected to the top of the rotating rod (14) at the top of the driven pulley (13), the top of the crushing cone (18) is fixedly connected to a guide cone (19), and an inverted conical bucket (20) is installed above the guide cone (19) and at the top of the processing cylinder (9).

4. The plastic feedstock metal separation device of claim 3, wherein: The bottom diameter of the extrusion cone (18) is larger than the top diameter, and a gap is formed between the extrusion cone (18) and the processing cylinder (9) to crush the plastic raw material. The guide cone (19) is a pointed cone shape, and the bottom diameter of the guide cone (19) is the same as the top diameter of the extrusion cone (18).

5. The plastic feedstock metal separation device of claim 1, wherein: The stirring component includes a stirring shaft (21) and stirring rods (22). The stirring shaft (21) is fixedly connected to the bottom end of the rotating rod (14) at the bottom of the driven pulley (13). Several stirring rods (22) for stirring the material in the material cylinder (7) are fixedly connected to the outer wall of the stirring shaft (21) in a vertical array and a ring array. The length of the stirring rods (22) is adapted to the inner diameter of the material cylinder (7).

6. The plastic feedstock metal separation device of claim 1, wherein: The driving component includes a drive motor (15), a mounting base (10) is fixedly connected to the outer wall of the material cylinder (7), the drive motor (15) is fixedly connected to the bottom of the mounting base (10), a drive pulley (16) is fixedly connected to the output end of the drive motor (15), and a tension belt (17) is fitted between the drive pulley (16) and the driven pulley (13).

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