Screened material returning and guiding equipment for EPS (Expandable Polystyrene) hot melt material granulation production

Abstract

The utility model discloses screened material returning and guiding equipment for EPS (expandable polystyrene) hot melt material granulation production, which comprises a screening box, a feeding port is fixedly mounted at the top of the screening box, a base is fixedly mounted at the bottom of the screening box, a fan is fixedly mounted on one side of the top of the screening box, a dust collection box is sleeved on the other side of the top of the screening box, and an air guide mesh is sleeved on the end of the fan close to an inner cavity of the screening box. The outer edge, away from the screening box inner cavity, of the dust collection box is sleeved with a cloth bag, a vibration screening mechanism is arranged in the middle of the screening box inner cavity, and a return guiding mechanism is arranged on one side of the back face of the screening box. Through the arrangement of the vibrating screening mechanism, the return guiding mechanism and other structures, particle materials can be screened under the action of the vibrating screening mechanism, qualified particle materials can be screened into the collecting box below, and unqualified particle materials and mixed qualified materials can participate in screening treatment again after being guided back by the return guiding mechanism. The final screening quality of materials is improved, and waste of qualified materials is avoided.

Description

Technical Field

[0001] This utility model relates to the field of granulation production technology, and more specifically, to a screening material return device for EPS hot melt material granulation production. Background Technology

[0002] EPS (expandable polystyrene) hot melt granulation production is a process of recycling waste EPS foam into granules through hot melting, extrusion, and cutting. After the plastic granules are extruded, a receiving device is needed to collect them. Currently, some devices can screen the plastic granules, but the plastic granules on the screen cannot be discharged in time, which affects the screening of the granules.

[0003] To address the aforementioned issues, a search revealed CN221187221U, which discloses a receiving device for plastic extrusion granulation. The specification states that plastic granules enter the outer casing through a receiving hopper and then fall onto a sieve plate, allowing them to move along the sieve plate. During this movement, the granules are sieved through the sieve holes on the sieve plate, allowing qualified products to flow along the sieve plate into a second collection frame, while unqualified products fall through the sieve holes into a first collection frame, thus enabling continuous sieving and improving sieving efficiency.

[0004] However, this granulation receiving equipment still has certain shortcomings in practical application. For example, although the above technical solution sorts and collects qualified and unqualified granular materials through the second and first collection frames respectively, there are deficiencies in the recycling and processing of unqualified materials. The system does not have an automatic return device, which means that operators must stop the machine and manually pour the unqualified materials back into the feed inlet for secondary screening. This design flaw not only increases the frequency of manual intervention but also directly affects the continuous operation efficiency of the production line. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a screening material return device for EPS hot melt material granulation production, so as to solve the problem that some granulation receiving equipment in the prior art has deficiencies, unqualified particles need to be manually returned after machine stoppage, and there is a lack of automatic return device, which affects production efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a screening material return device for EPS hot melt material granulation production, comprising...

[0007] A screening box is provided, with a feed inlet fixedly installed on the top and a base fixedly installed on the bottom. A fan is fixedly installed on one side of the top of the screening box, and a dust collection box is fitted on the other side. An air guide grid is fitted on the end of the fan near the inner cavity of the screening box. A cloth bag is fitted on the outer edge of the dust collection box away from the inner cavity of the screening box. A vibrating screening mechanism is provided in the middle of the inner cavity of the screening box, and a return guide mechanism is provided on one side of the back of the screening box.

[0008] The return guiding mechanism includes a docking frame plate, the outer surface of which is fixedly installed on the inner wall of one side of the back of the screening box. Two inclined plates are fixedly installed in the inner cavity at the bottom of the docking frame plate, and the two inclined plates are symmetrically arranged. A feed pipe is fixedly installed in the middle of the bottom of the docking frame plate. A transmission cylinder is fixedly installed at the bottom end of the feed pipe. A second motor is installed at the bottom of the transmission cylinder. An auger is fixedly sleeved at the output end of the second motor. The auger is rotatably installed on the inner surface of the transmission cylinder. A discharge pipe is fixedly sleeved at the top end of the transmission cylinder.

[0009] The vibrating screening mechanism includes a motor, which is fixedly installed on the side of the screening box. A shaft is fixedly sleeved at the output end of the motor, and multiple eccentric plates are fixedly sleeved on the outer surface of the shaft. A screen frame is arranged directly above the shaft, and the lower surface of the screen frame is in contact with the outer edges of the multiple eccentric plates. The outer surface of the screen frame is slidably installed with the inner wall of the middle part of the screening box.

[0010] The screening box has a guide plate 1 and a guide plate 2 fixedly installed inside its cavity. The guide plate 1 is located above the vibrating screening mechanism, and the guide plate 2 is located below the vibrating screening mechanism. A collection box is slidably installed in the cavity at the bottom of the screening box, and an opening and closing mechanism is provided in the middle of the guide plate 2.

[0011] The opening and closing mechanism includes an electric telescopic rod, which is fixedly installed on one side of the front of the screening box. A rack is fixedly installed on the side end of the electric telescopic rod, and a gear meshes with the lower edge of the rack. A connecting rod is fixedly sleeved in the middle of the gear. The outer surfaces of both ends of the connecting rod are rotatably installed with the inner surface of the middle of the guide plate. A movable plate is fixedly sleeved on the outer surface of the middle of the connecting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In the above scheme, by setting up structures such as a vibrating screening mechanism and a return mechanism, the granular material after EPS hot melt material granulation can be introduced into the screening box from the feed inlet. First, it undergoes air separation treatment through structures such as a fan and air guide grid to remove dust and impurities. Then, the remaining granular material will be screened by the vibrating screening mechanism. The qualified granular material will be screened into the collection box below, while the unqualified granular material and the mixed qualified material will be returned by the return mechanism to participate in the screening process again, so as to improve the final screening quality of the material and avoid the waste of qualified material.

[0014] In the above scheme, by setting up an opening and closing mechanism and other structures, before the collection box is removed, the electric telescopic rod is controlled to retract, pulling the rack connected to its side end to move laterally. The gear meshing with its lower edge will rotate, and the connecting rod fixedly sleeved in the middle of the gear will rotate along the inner wall of the front side of the screening box and the inner surface of the middle of the guide plate. This further drives the movable plate fixed in the middle of the connecting rod to rotate in the middle of the guide plate. When the movable plate rotates to the horizontal, it will block and close the discharge port in the middle of the guide plate. This ensures that during the process of the collection box being removed from the screening box for material dumping, the collected material will be trapped on the guide plate and the opening and closing mechanism, improving the convenience of material replacement in the collection box and preventing material overflow. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fan, air guide grid, dust collection box, and filter bag of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the vibrating screening mechanism, the return guide mechanism, etc. of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the guide plate, collection box, opening and closing mechanism, etc. of this utility model.

[0019] [Figure Labels]

[0020] 1. Screening box; 2. Feed inlet; 3. Base; 4. Fan; 5. Air guide grille; 6. Dust collection box; 7. Filter bag; 8. Vibrating screening mechanism; 80. Motor 1; 81. Shaft; 82. Eccentric plate; 83. Screen frame; 9. Return guide mechanism; 90. Connecting frame plate; 91. Inclined plate; 92. Feed pipe; 93. Conveyor cylinder; 94. Motor 2; 95. Screwdriver; 96. Discharge pipe; 10. Guide plate 1; 11. Guide plate 2; 12. Collection box; 13. Opening and closing mechanism; 130. Electric telescopic rod; 131. Rack; 132. Connecting rod; 133. Movable plate; 134. Gear. Detailed Implementation

[0021] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] As attached Figure 1 To be continued Figure 4 An embodiment of this utility model provides a screening material return device for EPS hot melt material granulation production, including...

[0023] Screening box 1, with a feed inlet 2 fixedly installed on the top and a base 3 fixedly installed on the bottom. A fan 4 is fixedly installed on one side of the top of the screening box 1, and a dust collection box 6 is sleeved on the other side. A guide grid 5 is sleeved on the end of the fan 4 near the inner cavity of the screening box 1. A cloth bag 7 is sleeved on the outer edge of the dust collection box 6 away from the inner cavity of the screening box 1. A vibrating screening mechanism 8 is provided in the middle of the inner cavity of the screening box 1. A return guide mechanism 9 is provided on one side of the back of the screening box 1.

[0024] By setting up structures such as dust collection box 6 and cloth bag 7, when the material is fed into the screening box 1 through the feed inlet 2, the blower 4 blows air and forms a uniform air curtain under the guidance of the air guide grid 5. The impurities in the material are blown to the dust collection box 6 on the right side, enter the dust collection box 6 through the mesh on the inside of the screening box 1, and are intercepted by the cloth bag 7 on the right side, thus completing the air separation and cleaning of light dust impurities in the material.

[0025] The return guide mechanism 9 includes a docking frame plate 90. The outer surface of the docking frame plate 90 is fixedly installed on the inner wall of one side of the back of the screening box 1. Two inclined plates 91 are fixedly installed in the inner cavity at the bottom of the docking frame plate 90. The two inclined plates 91 are symmetrically arranged. A feed pipe 92 is fixedly installed in the middle of the bottom of the docking frame plate 90. A transmission cylinder 93 is fixedly installed at the bottom end of the feed pipe 92. A second motor 94 is provided at the bottom of the transmission cylinder 93. An auger 95 is fixedly sleeved at the output end of the second motor 94. The auger 95 is rotatably installed on the inner surface of the transmission cylinder 93. A discharge pipe 96 is fixedly sleeved at the top end of the transmission cylinder 93.

[0026] The vibrating screening mechanism 8 includes a motor 80, which is fixedly installed on the side of the screening box 1. A shaft 81 is fixedly sleeved at the output end of the motor 80. Multiple eccentric plates 82 are fixedly sleeved on the outer surface of the shaft 81. A screen frame 83 is arranged directly above the shaft 81. The lower surface of the screen frame 83 is in contact with the outer edge of the multiple eccentric plates 82. The outer surface of the screen frame 83 is slidably installed with the inner wall of the middle part of the screening box 1.

[0027] By setting up structures such as the vibrating screening mechanism 8 and the return guiding mechanism 9, when the material is screened and returned through the vibrating screening mechanism 8 and the return guiding mechanism 9, the specific operation is as follows: when the material is fed into the middle of the screen frame 83, the motor 80 is started. The shaft 81 sleeved at its output end drives the externally fixed eccentric plate 82 to rotate. During the rotation of the eccentric plate 82, it pushes the screen frame 83 to vibrate up and down against the inner wall of the screening box 1, thereby realizing the screening of the material. Furthermore, because the screen frame 83... Due to the tilting effect, unqualified materials will converge towards the side closer to the back of the screening box 1. When the screen frame 83 rises to its highest point and coincides with the docking frame plate 90, this part of the unqualified material will converge along the surface of the docking frame plate 90 and the tilting plate 91 towards the feed pipe 92 in the middle. Then, it will enter the bottom of the transmission cylinder 93 through the feed pipe 92. At the same time, the control motor 2 94 drives the auger 95 to rotate, conveying the material upward. Finally, the material will be put back into the screening box 1 from the feed port 2 through the discharge pipe 96.

[0028] The inner cavity of the screening box 1 is fixedly equipped with guide plate 10 and guide plate 11. Guide plate 10 is located above the vibrating screening mechanism 8, and guide plate 11 is located below the vibrating screening mechanism 8. A collection box 12 is slidably installed in the inner cavity at the bottom of the screening box 1. An opening and closing mechanism 13 is provided in the middle of guide plate 11.

[0029] The opening and closing mechanism 13 includes an electric telescopic rod 130, which is fixedly installed on one side of the front of the screening box 1. A rack 131 is fixedly installed on the side end of the electric telescopic rod 130. A gear 134 meshes with the lower edge of the rack 131. A connecting rod 132 is fixedly sleeved in the middle of the gear 134. The outer surfaces of both ends of the connecting rod 132 are rotatably installed with the inner surface of the middle of the guide plate 11. A movable plate 133 is fixedly sleeved on the outer surface of the middle of the connecting rod 132.

[0030] The working process of this utility model is as follows:

[0031] For the granular material produced by EPS hot melt material granulation, it can be introduced into the screening box 1 from the feed inlet 2. First, it is subjected to air separation by the fan 4, air guide grid 5 and other structures to remove dust and impurities. Then, the remaining granular material will be screened by the vibrating screening mechanism 8. The qualified granular material will be screened into the collection box 12 below. The unqualified granular material and the mixed qualified material will be returned by the return mechanism 9 and participate in the screening process again to improve the final screening quality of the material and avoid the waste of qualified material.

[0032] In addition, before the qualified material inside the collection box 12 is discharged, the opening and closing state of the opening and closing mechanism 13 can be adjusted so that the collection box 12 can be moved out without stopping the machine. The specific operation is as follows: before the collection box 12 is moved out, the electric telescopic rod 130 is controlled to retract, which pulls the rack 131 connected to its side end to move laterally. The gear 134 meshing with its lower edge will rotate. The connecting rod 132 fixedly sleeved in the middle of the gear 134 will rotate along the inner wall of the front side of the screening box 1 and the inner surface of the middle of the guide plate 11. This will further drive the movable plate 133 fixed in the middle of the connecting rod 132 to rotate in the middle of the guide plate 11. When the movable plate 133 rotates to the horizontal, it will block and close the discharge port in the middle of the guide plate 11, so that the collected material will be intercepted on the guide plate 11 and the opening and closing mechanism 13 during the process of the collection box 12 being moved out of the screening box 1 for material dumping.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0034] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A material screening and return device for EPS hot melt material granulation production, characterized in that, include A screening box (1) is provided with a feed inlet (2) fixedly installed on the top and a base (3) fixedly installed on the bottom. A fan (4) is fixedly installed on one side of the top of the screening box (1) and a dust collection box (6) is sleeved on the other side. A guide grid (5) is sleeved on the end of the fan (4) near the inner cavity of the screening box (1). A cloth bag (7) is sleeved on the outer edge of the dust collection box (6) away from the inner cavity of the screening box (1). A vibrating screening mechanism (8) is provided in the middle of the inner cavity of the screening box (1). A return guide mechanism (9) is provided on one side of the back of the screening box (1).

2. The screening and material return equipment for EPS hot melt material granulation production according to claim 1, characterized in that, The return guide mechanism (9) includes a docking frame plate (90). The outer surface of the docking frame plate (90) is fixedly installed on the inner wall of the back side of the screening box (1). Two inclined plates (91) are fixedly installed in the inner cavity at the bottom of the docking frame plate (90). The two inclined plates (91) are symmetrically arranged. A feed pipe (92) is fixedly installed in the middle of the bottom of the docking frame plate (90). A transmission cylinder (93) is fixedly installed at the bottom end of the feed pipe (92). A second motor (94) is provided at the bottom of the transmission cylinder (93). An auger (95) is fixedly sleeved at the output end of the second motor (94). The auger (95) is rotatably installed on the inner surface of the transmission cylinder (93). A discharge pipe (96) is fixedly sleeved at the top end of the transmission cylinder (93).

3. The screening and material return equipment for EPS hot melt material granulation production according to claim 1, characterized in that, The vibrating screening mechanism (8) includes a motor (80), which is fixedly installed on the side of the screening box (1). The output end of the motor (80) is fixedly sleeved with a shaft (81). Multiple eccentric plates (82) are fixedly sleeved on the outer surface of the shaft (81). A screen frame (83) is arranged directly above the shaft (81). The lower surface of the screen frame (83) is in contact with the outer edge of the multiple eccentric plates (82). The outer surface of the screen frame (83) is slidably installed with the inner wall of the middle part of the screening box (1).

4. The screening and material return equipment for EPS hot melt material granulation production according to claim 1, characterized in that, The inner cavity of the screening box (1) is fixedly equipped with guide plate one (10) and guide plate two (11). The guide plate one (10) is located above the vibrating screening mechanism (8), and the guide plate two (11) is located below the vibrating screening mechanism (8). The inner cavity at the bottom of the screening box (1) is slidably equipped with a collection box (12), and the middle of the guide plate two (11) is provided with an opening and closing mechanism (13).

5. The screening and material return equipment for EPS hot melt material granulation production according to claim 4, characterized in that, The opening and closing mechanism (13) includes an electric telescopic rod (130), which is fixedly installed on one side of the front of the screening box (1). A rack (131) is fixedly installed on the side end of the electric telescopic rod (130). A gear (134) meshes with the lower edge of the rack (131). A connecting rod (132) is fixedly sleeved in the middle of the gear (134). The outer surfaces of both ends of the connecting rod (132) are rotatably installed with the inner surface of the middle part of the guide plate (11). A movable plate (133) is fixedly sleeved on the outer surface of the middle part of the connecting rod (132).

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