Polyurethane foam crushing production line

Abstract

The utility model provides a polyurethane foam crushing production line, which relates to the technical field of polyurethane materials, and comprises a feeding conveying belt, a feeding device, a discharging device, a crushing device and a discharging device, the lifting conveying belt is used for conveying the polyurethane foam upwards; the polyurethane foam crushing device, the feeding conveying belt, the lifting conveying belt and the polyurethane foam crushing device are connected in sequence; the detection mechanism is arranged above the detection station, and the detection station is located on the conveying path of the feeding conveying belt; the detection mechanism is used for detecting whether metal or cloth is mixed in the polyurethane foam or not; and the removing mechanism is arranged on one side of the detection station, and when the detection mechanism detects that metal exists in the detection station, the removing mechanism enables the polyurethane foam and the metal located in the detection station to be separated from the feeding conveying belt together. And when the detection mechanism detects that the metal and the cloth exist in the detection station, the removing mechanism enables the polyurethane foam, the metal and the cloth in the detection station to be separated from the feeding conveying belt together.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane materials technology, and in particular to a polyurethane foam crushing production line. Background Technology

[0002] Polyurethane foam is a high molecular polymer made from isocyanate and polyether as the main raw materials, mixed with various additives such as foaming agents, catalysts, and flame retardants through specialized equipment, and then foamed on-site by high-pressure spraying. There are two types of polyurethane foam: flexible foam and rigid foam. Flexible foam has an open-cell structure, while rigid foam has a closed-cell structure.

[0003] Polyurethane foam materials are widely used in large quantities, generating a lot of waste. This waste can be recycled and reused. Taking recycled rigid waste polyurethane foam as an example, it is usually crushed by a crushing device before being reused.

[0004] Because waste polyurethane foam is widely used in various industries, recycled rigid waste polyurethane foam often contains impurities such as metals and fabrics. Current crushing equipment also crushes these impurities, which is not conducive to subsequent screening to separate them. Utility Model Content

[0005] In view of the above situation, this utility model provides a polyurethane foam crushing production line, which aims to solve the technical problem that the existing crushing devices crush impurities along with the foam, which is not conducive to the subsequent screening of impurities.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a polyurethane foam crushing production line, comprising:

[0008] Feeding conveyor belt, used for transverse conveying of polyurethane foam;

[0009] Elevating conveyor belts are used to transport polyurethane foam upwards.

[0010] A polyurethane foam crushing device, consisting of a feeding conveyor belt, a lifting conveyor belt, and the polyurethane foam crushing device connected in sequence;

[0011] The testing mechanism is located above the testing station, which is situated on the conveyor path of the feeding conveyor belt. The testing mechanism is used to detect whether the polyurethane foam contains metal or fabric.

[0012] The rejection mechanism is located on one side of the inspection station. When the inspection mechanism detects metal in the inspection station, the rejection mechanism causes the polyurethane foam and metal in the inspection station to be removed from the feeding conveyor belt together.

[0013] The return conveyor belt is connected at one end to the side of the inspection station and at the other end to the material receiving end of the inspection station; separation stations are set up on the conveying path of the return conveyor belt.

[0014] In some embodiments of this invention, the detection mechanism includes a metal sensor.

[0015] In some embodiments of this invention, the detection mechanism includes a CCD camera.

[0016] In some embodiments of this utility model, the polyurethane foam crushing device includes:

[0017] The shell has a feed inlet at the top and a cutting chamber and a crushing chamber inside; the feed inlet is located below the upper end of the lifting conveyor belt and is connected to the cutting chamber; the upper parts of the cutting chamber and the crushing chamber are separated by a partition, and a gap is left between the bottom of the partition and the bottom of the cutting chamber to form a material conveying channel.

[0018] The cutting mechanism, located inside the cutting chamber and below the feed inlet, is used to cut polyurethane foam into multiple pieces.

[0019] The crushing mechanism, located inside the crushing chamber, is used to crush block polyurethane foam into granules.

[0020] A disturbance mechanism, located below the crushing mechanism, is used to move the blocky polyurethane foam at the bottom of the crushing chamber upwards to contact the crushing mechanism.

[0021] The discharge filter plate is installed inside the crushing chamber and above the crushing mechanism, with a discharge port connected to the top of the discharge filter plate.

[0022] In some embodiments of this utility model, the slicing mechanism includes a slicing shaft and slicing blades; the slicing shaft is arranged laterally and rotatably connected to a partition; a plurality of slicing blades are arranged laterally at intervals on the slicing shaft.

[0023] In some embodiments of this utility model, the crushing mechanism includes a crushing shaft and crushing blades; the crushing shaft is arranged laterally and rotatably connected to a partition; multiple crushing blades are arranged laterally at intervals on the crushing shaft.

[0024] In some embodiments of this utility model, the cutting shaft drives the crushing shaft to rotate via gears.

[0025] In some embodiments of this utility model, the rotational speed of the crushing shaft is greater than the rotational speed of the cutting shaft, and the distance between two adjacent crushing blades is less than the distance between two adjacent cutting blades.

[0026] In some embodiments of this utility model, the disturbance mechanism includes a plurality of jet heads evenly arranged below the crushing chamber. The jet heads are used to generate an upward airflow, and the airflow generated by the jet heads can enter the crushing chamber.

[0027] In some embodiments of this utility model, the jet head is disposed outside the crushing chamber, and a perforated plate is disposed between the jet head and the crushing chamber.

[0028] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0029] 1. Polyurethane foam is arranged on a feeding conveyor belt. After passing the inspection station, the polyurethane foam is lifted by the hoisting conveyor belt to the top of the polyurethane foam crushing device, and then falls into the polyurethane foam crushing device for crushing. When the polyurethane foam passes through the inspection station, the inspection mechanism checks whether there is metal mixed in with the polyurethane foam. When the inspection mechanism detects metal or fabric at the inspection station, the rejection mechanism removes the polyurethane foam, metal, and fabric at the inspection station from the feeding conveyor belt together, thereby ensuring that the material entering the polyurethane foam crushing device is free of metal and fabric debris.

[0030] 2. Because the polyurethane foam, metal, and fabric that detach from the feeding conveyor belt under the action of the rejection mechanism are not broken together, they are easier to separate.

[0031] 3. Under the action of the rejection mechanism, the polyurethane foam and metal that have been separated from the feeding conveyor belt move to the separation station. The workers separate the metal and fabric from the polyurethane foam. The polyurethane foam returns to the feeding conveyor belt and is inspected again at the inspection station to ensure that the metal and fabric have been completely separated.

[0032] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of a polyurethane foam crushing production line.

[0035] Figure 2 This is a schematic diagram of a polyurethane foam crushing device.

[0036] icon:

[0037] 1-Shell, 11-Feed inlet, 12-Cutting chamber, 13-Crushing chamber, 14-Baffle, 15-Conveying channel, 16-Discharge outlet

[0038] 2-Cutting mechanism, 21-Cutting shaft, 22-Cutting blade,

[0039] 3-Crushing mechanism, 31-Crushing shaft, 32-Crushing blade, 33-Gear,

[0040] 4- Disturbance mechanism, 41- Jet head, 42- Air pipe, 43- Perforated plate,

[0041] 5-Discharge filter plate,

[0042] 6- Hair dryer,

[0043] 71-Feeding conveyor belt, 711-Inspection station, 72-Lifting conveyor belt, 73-Rejection mechanism, 731-Push plate, 74-Return conveyor belt, 741-Separation station. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0045] In the description of the embodiments of this utility model, it should be understood that the terms "horizontal", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0046] Furthermore, the term "multiple" means two or more, unless otherwise explicitly specified.

[0047] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0048] The embodiments of this utility model will be described in detail below.

[0049] Example 1

[0050] See Figures 1-2This embodiment provides a polyurethane foam crushing production line, including a feeding conveyor belt 71, a lifting conveyor belt 72, a polyurethane foam crushing device, a detection mechanism (not shown in the figure), a rejection mechanism 73, and a return conveyor belt 74.

[0051] The feeding conveyor belt 71 is used for transverse conveying of polyurethane foam.

[0052] The lifting conveyor belt 72 is used to transport polyurethane foam upwards.

[0053] The polyurethane foam crushing device is used to crush polyurethane foam. The feeding conveyor belt 71, the lifting conveyor belt 72, and the polyurethane foam crushing device are connected in sequence to allow the polyurethane foam to enter the crushing device.

[0054] The detection mechanism is positioned above the detection station 711, which is located on the conveying path of the feeding conveyor belt 71. The detection mechanism is used to detect whether metal is mixed in with the polyurethane foam. The detection mechanism includes a metal sensor.

[0055] A rejection mechanism 73 is located on one side of the inspection station 711. When the inspection mechanism detects metal in the inspection station 711, the rejection mechanism 73 causes the polyurethane foam and metal in the inspection station 711 to detach together from the feeding conveyor belt 71. The rejection mechanism 73 includes a push plate 731 driven by a cylinder. The push plate 731, driven by the cylinder, can remove the polyurethane foam and metal in the inspection station 711 together from the feeding conveyor belt 71.

[0056] Polyurethane foam is arranged on the feeding conveyor belt 71. After passing through the inspection station 711, the polyurethane foam is transported upwards by the lifting conveyor belt 72 to the top of the polyurethane foam crushing device, and then falls into the polyurethane foam crushing device for crushing. When the polyurethane foam passes through the inspection station 711, the inspection mechanism detects whether there is metal mixed in with the polyurethane foam. When the inspection mechanism detects metal in the inspection station 711, the rejection mechanism 73 causes the polyurethane foam and metal in the inspection station 711 to be removed from the feeding conveyor belt 71 together, thereby ensuring that there are no metal impurities in the material entering the polyurethane foam crushing device. Since the polyurethane foam and metal that are removed from the feeding conveyor belt 71 by the rejection mechanism 73 are not crushed together, they are easier to separate.

[0057] One end of the return conveyor belt 74 is connected to the side of the inspection station 711, and the other end is connected to the material receiving end of the inspection station 711. A separation station 741 is set on the conveying path of the return conveyor belt 74. After the polyurethane foam and metal that have been separated from the feeding conveyor belt 71 by the rejection mechanism 73 move to the separation station 741, the worker separates the metal debris from the polyurethane foam. The polyurethane foam returns to the feeding conveyor belt 71 and passes through the inspection station 711 again for inspection to ensure that the metal debris has been completely separated.

[0058] Example 2

[0059] See Figures 1-2 Unlike Embodiment 1, in this embodiment, the detection mechanism is used to detect whether the polyurethane foam contains fabric. Specifically, the detection mechanism includes a CCD camera, which uses existing machine vision technology to process and identify real-time images captured by the CCD camera. When the machine determines that there is fabric debris in the image, the rejection mechanism 73 removes the polyurethane foam and fabric from the feeding conveyor belt 71 together at the detection station 711.

[0060] Example 3

[0061] This embodiment is a further improvement based on embodiments 1 and 2.

[0062] See Figure 2 The polyurethane foam crushing device includes a shell 1, a cutting mechanism 2, a crushing mechanism 3, a disturbance mechanism 4, and a discharge filter plate 5.

[0063] The top of the housing 1 has a feed inlet 11, and the inside has a cutting chamber 12 and a crushing chamber 13. The feed inlet 11 is located below the upper end of the lifting conveyor belt 72 and is connected to the cutting chamber 12. The bottom of the crushing chamber 13 is horizontally arranged, and the bottom of the cutting chamber 12 is inclined. The lower end (right end) of the bottom of the cutting chamber 12 is flush with the bottom of the crushing chamber 13. The upper parts of the cutting chamber 12 and the crushing chamber 13 are separated by a partition 14. A gap is left between the bottom of the partition 14 and the bottom of the cutting chamber 12 to form a conveying channel 15.

[0064] The cutting mechanism 2 is located inside the cutting cavity 12 and below the feed inlet 11, and is used to cut polyurethane foam into multiple pieces.

[0065] The crushing mechanism 3 is installed inside the crushing chamber 13 and is used to crush block polyurethane foam into granules.

[0066] The disturbance mechanism 4 is located below the crushing mechanism 3 and is used to move the block polyurethane foam located at the bottom of the crushing chamber 13 upward to contact the crushing mechanism 3.

[0067] The discharge filter plate 5 is installed inside the crushing chamber 13 and located above the crushing mechanism 3. The discharge port 16 is connected above the discharge filter plate 5.

[0068] After polyurethane foam enters the cutting chamber 12 through the feed inlet 11, it is first cut into multiple pieces by the cutting mechanism 2, and then enters the crushing chamber 13 through the conveying channel 15. Under the disturbance of the disturbance mechanism 4 and the obstruction of the discharge filter plate 5, it flies and comes into contact with the crushing mechanism 3. Finally, after being completely crushed into granules by the crushing mechanism 3, it passes upward through the discharge filter plate 5 and is discharged from the discharge port 16. Materials that are too large to pass through the discharge filter plate 5 temporarily will continue to come into contact with the crushing mechanism 3 in the crushing chamber 13 and be completely crushed, thereby ensuring that the crushed degree of the material discharged from the discharge port 16 is consistent.

[0069] The cutting mechanism 2 includes a cutting shaft 21 and cutting blades 22. The cutting shaft 21 is arranged laterally and rotatably connected to the partition 14. The cutting shaft 21 is driven by a motor. Multiple cutting blades 22 are arranged laterally at intervals on the cutting shaft 21. By configuring the cutting shaft 21 and the cutting blades 22, polyurethane foam entering the cutting chamber 12 through the feed inlet 11 can be cut into multiple pieces.

[0070] The crushing mechanism 3 includes a crushing shaft 31 and crushing blades 32; the crushing shaft 31 is arranged laterally and rotatably connected to the partition plate 14; multiple crushing blades 32 are arranged laterally at intervals on the crushing shaft 31. Through the arrangement of the crushing shaft 31 and the crushing blades 32, polyurethane foam entering the crushing chamber 13 through the feed inlet 11 can be cut into multiple pieces.

[0071] The cutting shaft 21 drives the crushing shaft 31 to rotate via the gear 33. Thus, a single motor can drive both the cutting shaft 21 and the crushing shaft 31 to rotate. In this embodiment, the rotational speed of the crushing shaft 31 is greater than that of the cutting shaft 21, and the distance between two adjacent crushing blades 32 is smaller than the distance between two adjacent cutting blades 22. This achieves a better crushing effect.

[0072] The disturbance mechanism 4 includes multiple jet heads 41 evenly arranged below the crushing chamber 13, with the multiple jet heads 41 installed in the same air pipe 42. The jet heads 41 are used to generate upward airflow, which can enter the crushing chamber 13. More specifically, the jet heads 41 are located outside the crushing chamber 13, and a perforated plate 43 is provided between the jet heads 41 and the crushing chamber 13 to provide ventilation, allowing the airflow generated by the jet heads 41 to enter the crushing chamber 13.

[0073] A blower 6 is installed on the side of the partition 14 facing the crushing chamber 13. The blower 6 is located above the perforated plate 43 to blow out the completely crushed material for easy discharge. In other embodiments, to facilitate the discharge of the completely crushed material, the discharge port 16 can be connected to a negative pressure device to extract the material.

[0074] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. For those skilled in the art, this utility model can have various modifications and variations. Without conflict, the embodiments and features described in this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A polyurethane foam crushing production line, characterized in that, include: Feeding conveyor belt, used for transverse conveying of polyurethane foam; Elevating conveyor belts are used to transport polyurethane foam upwards. A polyurethane foam crushing device, wherein the feeding conveyor belt, the lifting conveyor belt, and the polyurethane foam crushing device are connected in sequence; The testing mechanism is located above the testing station, which is situated on the conveying path of the feeding conveyor belt; the testing mechanism is used to detect whether the polyurethane foam contains metal or fabric. A rejection mechanism is provided on one side of the inspection station. When the inspection mechanism detects metal in the inspection station, the rejection mechanism causes the polyurethane foam and metal in the inspection station to be removed from the feeding conveyor belt together. The return conveyor belt is connected at one end to the side of the inspection station and at the other end to the material receiving end of the inspection station; a separation station is set on the conveying path of the return conveyor belt.

2. The polyurethane foam crushing production line according to claim 1, characterized in that, The detection mechanism includes a metal sensor.

3. The polyurethane foam crushing production line according to claim 1, characterized in that, The detection mechanism includes a CCD camera.

4. The polyurethane foam crushing production line according to any one of claims 1 to 3, characterized in that, The polyurethane foam crushing device includes: The housing has a feed inlet at the top and a cutting chamber and a crushing chamber inside; the feed inlet is located below the upper end of the lifting conveyor belt and communicates with the cutting chamber; the upper parts of the cutting chamber and the crushing chamber are separated by a partition, and a gap is left between the bottom of the partition and the bottom of the cutting chamber to form a material conveying channel; A cutting mechanism, disposed within the cutting cavity and located below the feed inlet, is used to cut polyurethane foam into multiple pieces; A crushing mechanism, located inside the crushing chamber, is used to crush block polyurethane foam into granules. A disturbance mechanism is provided below the crushing mechanism to move the block polyurethane foam located at the bottom of the crushing chamber upwards to contact the crushing mechanism. A discharge filter plate is disposed inside the crushing chamber and above the crushing mechanism, and a discharge port is connected to the top of the discharge filter plate.

5. The polyurethane foam crushing production line according to claim 4, characterized in that, The slicing mechanism includes a slicing shaft and slicing blades; the slicing shaft is arranged laterally and rotatably connected to the partition; a plurality of slicing blades are arranged laterally at intervals on the slicing shaft.

6. The polyurethane foam crushing production line according to claim 5, characterized in that, The crushing mechanism includes a crushing shaft and crushing blades; the crushing shaft is arranged laterally and rotatably connected to the partition plate; a plurality of crushing blades are arranged laterally at intervals on the crushing shaft.

7. The polyurethane foam crushing production line according to claim 6, characterized in that, The cutting shaft is driven to rotate by gears.

8. The polyurethane foam crushing production line according to claim 6, characterized in that, The rotational speed of the crushing shaft is greater than that of the cutting shaft, and the distance between two adjacent crushing blades is less than that between two adjacent cutting blades.

9. The polyurethane foam crushing production line according to claim 4, characterized in that, The disturbance mechanism includes a plurality of jet heads evenly arranged below the crushing chamber. The jet heads are used to generate an upward airflow that can enter the crushing chamber.

10. The polyurethane foam crushing production line according to claim 9, characterized in that, The jet nozzle is disposed outside the crushing chamber, and a perforated plate is disposed between the jet nozzle and the crushing chamber.

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