Conveying device for pre-expanded beads in EPS foam plastic product production

Abstract

The utility model discloses a pre-foaming bead conveying device for EPS foam plastic product production, which comprises an EPS pre-foaming machine body, a side discharge port of the EPS pre-foaming machine body is communicated with a conveying pipe, the conveying pipe is internally provided with a cleaning mechanism, the cleaning mechanism comprises a driving mechanism, a connecting end plate, a plurality of metal push rods, a support ring and an annular cleaning brush, and the connecting end plate is connected with the conveying pipe. The supporting ring is slidably connected to the inner wall of the conveying pipe, the annular cleaning brush is fixedly connected to the surface of the supporting ring, and the driving mechanism is fixedly installed on the surface of the aggregate distribution box and used for driving the connecting end plate to reciprocate. The cleaning mechanism is arranged, the supporting ring and the annular cleaning brush can be driven by the driving mechanism to slide on the inner wall of the conveying pipe in a reciprocating mode, dust attached to the inner wall of the conveying pipe can be effectively removed through friction between the annular cleaning brush and the conveying pipe, and compared with the prior art, the inner wall of the conveying pipe can be cleaned without disassembling the conveying pipe; the cleaning process is simple and convenient, and the practicability is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of EPS foam product manufacturing technology, specifically to a conveying device for pre-expanded beads in EPS foam product manufacturing. Background Technology

[0002] Pre-expanded beads in EPS foam products refer to polystyrene beads that have undergone pre-expansion treatment during the production process. Under heating and pressurization conditions, the low-boiling-point liquid foaming agent inside these beads vaporizes, causing the beads to expand and form non-interconnected cells. The pre-expanded beads expand after heating, forming a foam material with a large number of bubbles.

[0003] A search revealed CN210453447U, which discloses an anti-static pre-expanded bead conveying device for EPS foam product manufacturing. This device includes an EPS pre-expanding machine, which is connected to a material distributor via a pre-expanding machine pipe. A switching valve is installed in the middle of the pre-expanding machine pipe. The upper end of the material distributor is connected to a conveying pipe, and the other end of the conveying pipe is connected to a hopper. A switching valve is also installed in the middle of the conveying pipe. All switching valves are connected to a control system. Because the conveying pipe and hopper are made of metal, which is conductive, static electricity generated by friction between the plastic beads can be immediately discharged, preventing static electricity accumulation. During material conveying via the metal conveying pipe, no secondary static electricity is generated between the material and the beads.

[0004] After long-term use, the pipes that transport pre-expanded beads will accumulate some dust. This dust can easily adhere to the surface of the pre-expanded beads. If the dust is not cleaned in time, it will affect the subsequent EPS foam production. The existing technology requires disassembling the transport pipes to facilitate cleaning, which is quite cumbersome and therefore needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to provide a conveying device for pre-expanded beads in the production of EPS foam products, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a conveying device for producing pre-expanded beads of EPS foam products, comprising an EPS pre-expanding machine body, a conveying pipe connected to the side outlet of the EPS pre-expanding machine body, a material distribution box connected to the end of the conveying pipe away from the EPS pre-expanding machine body, a discharge pipe assembly connected to the surface of the material distribution box, and a cleaning mechanism provided inside the conveying pipe;

[0007] The cleaning mechanism includes a drive mechanism, a connecting end plate, multiple metal push rods, a support ring, and an annular cleaning brush. The support ring is slidably connected to the inner wall of the conveying pipe, and the annular cleaning brush is fixedly connected to the surface of the support ring and abuts against the inner wall of the conveying pipe. One end of the multiple metal push rods is fixedly connected to the surface of the support ring, and the other end of the multiple metal push rods extends to the outside of the material distribution box. The connecting end plate is fixedly connected to the end of the metal push rods, and the drive mechanism is fixedly installed on the surface of the material distribution box to drive the connecting end plate to reciprocate.

[0008] Preferably, the driving mechanism can be a pneumatic telescopic rod, an electric telescopic rod, or a hydraulic telescopic rod.

[0009] Preferably, both ends of the conveying pipe are integrally formed with ear plates, and the surface of the ear plates is threaded with two sets of first fixing bolts for fixing the conveying pipe.

[0010] Preferably, there are multiple discharge pipe assemblies, and the discharge pipe assemblies are detachably and fixedly installed on the surface of the material distribution box.

[0011] Preferably, the upper surface of the material distribution box is fixedly connected to two limiting plates. The discharge pipe assembly includes a discharge pipe, a mounting base, and a second fixing bolt. The mounting base is fixedly connected to the lower outer surface of the discharge pipe and is slidably connected to the inner wall of the two limiting plates. A switch valve is provided on the discharge pipe. The second fixing bolt is threadedly connected to the surface of the limiting plate, and the surface of the mounting base is provided with positioning holes corresponding to the second fixing bolt.

[0012] Preferably, the hopper is made of metal, and the lower surface of the hopper is provided with a plurality of metal support legs arranged in a circular array.

[0013] Preferably, the connecting end plate is made of metal, and a steel wire is fixedly connected to the lower end of the connecting end plate, and a grounding conductive ball is fixedly connected to the lower end of the steel wire.

[0014] Beneficial effects

[0015] This utility model provides a conveying device for pre-expanded beads in the production of EPS foam products, which has the following beneficial effects:

[0016] 1. This EPS foam product manufacturing pre-expanded beads conveying device, by setting up a cleaning mechanism, uses a drive mechanism to drive the connecting end plate and metal push rod to reciprocate, thereby driving the support ring and annular cleaning brush to slide back and forth on the inner wall of the conveying pipe. The friction between the annular cleaning brush and the conveying pipe can effectively remove dust adhering to the inner wall of the conveying pipe. Compared with the prior art, this utility model can clean the inner wall of the conveying pipe without disassembling the conveying pipe. The cleaning process is simple and convenient, effectively improving practicality.

[0017] 2. The conveying device for pre-expanded beads in the production of EPS foam products is equipped with a metal push rod, a connecting end plate, a steel wire, and a grounding conductive ball. By using the metal push rod to contact the pre-expanded beads, the static electricity carried on the surface of the pre-expanded beads can be discharged. Then, the static electricity is conducted to the ground through the connecting end plate, the steel wire, and the grounding conductive ball in sequence, effectively avoiding static electricity generated by friction during the transportation of pre-expanded beads. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a conveying device for producing pre-expanded beads in EPS foam products, as proposed in this utility model.

[0019] Figure 2 This is a frontal cross-sectional schematic diagram of a conveying device for producing pre-expanded beads in EPS foam products, as proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the cleaning mechanism of a conveying device for producing pre-expanded beads in EPS foam production, as proposed in this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the conveying pipe of a conveying device for producing pre-expanded beads in EPS foam production, as proposed in this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the discharge pipe assembly of a conveying device for producing pre-expanded beads in EPS foam products, as proposed in this utility model.

[0023] In the diagram: 1. EPS pre-expanding machine body; 2. Conveying pipe; 3. Material distribution box; 4. Discharge pipe assembly; 5. Hopper; 6. Cleaning mechanism; 7. Drive mechanism; 8. Connecting end plate; 9. Metal push rod; 10. Support ring; 11. Annular cleaning brush; 12. Ear plate; 13. First fixing bolt; 14. Limiting plate; 15. Discharge pipe; 16. Mounting base; 17. Second fixing bolt; 18. Switch valve; 19. Positioning hole; 20. Metal support leg; 21. Steel wire; 22. Grounding conductive ball. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4This utility model provides a technical solution: a conveying device for producing pre-expanded beads in EPS foam production, including an EPS pre-expanding machine body 1. A conveying pipe 2 is connected to the side outlet of the EPS pre-expanding machine body 1. The end of the conveying pipe 2 away from the EPS pre-expanding machine body 1 is connected to a material distribution box 3. A discharge pipe assembly 4 is connected to the surface of the material distribution box 3. The end of the discharge pipe assembly 4 away from the material distribution box 3 extends into a hopper 5. A cleaning mechanism 6 is provided inside the conveying pipe 2. The cleaning mechanism 6 includes a driving mechanism 7, a connecting end plate 8, multiple metal push rods 9, a support ring 10, and an annular cleaning brush 11. The support ring 10 is slidably connected to the inner wall of the conveying pipe 2. The annular cleaning brush 11 is fixedly connected to the surface of the support ring 10 and abuts against the inner wall of the conveying pipe 2. The end of the metal push rod 9 is fixedly connected to the surface of the support ring 10. The other end of the multiple metal push rods 9 extends to the outside of the material distribution box 3. The connecting end plate 8 is fixedly connected to the end of the metal push rod 9. The driving mechanism 7 is fixedly installed on the surface of the material distribution box 3 to drive the connecting end plate 8 to reciprocate. The driving mechanism 7 can be a pneumatic telescopic rod, an electric telescopic rod, or a hydraulic telescopic rod. By setting the cleaning mechanism 6, the driving mechanism 7 can drive the connecting end plate 8 and the metal push rod 9 to reciprocate, thereby driving the support ring 10 and the annular cleaning brush 11 to slide back and forth on the inner wall of the conveying pipe 2. The friction between the annular cleaning brush 11 and the conveying pipe 2 can effectively remove the dust adhering to the inner wall of the conveying pipe 2. Compared with the prior art, this utility model can clean the inner wall of the conveying pipe 2 without disassembling the conveying pipe 2. The cleaning process is simple and convenient, effectively improving the practicality.

[0026] Both ends of the conveying pipe 2 are integrally formed with ear plates 12. The surface of the ear plates 12 is threaded with two sets of first fixing bolts 13 for fixing the conveying pipe 2. By setting the ear plates 12 and the first fixing bolts 13, the conveying pipe 2 can be easily disassembled, which facilitates the subsequent cleaning of the annular cleaning brush 11.

[0027] There are multiple discharge pipe assemblies 4, and the discharge pipe assemblies 4 can be detachably and fixedly installed on the surface of the material distribution box 3. By setting multiple discharge pipe assemblies 4, it is convenient to feed multiple hoppers 5 at the same time.

[0028] Two limiting plates 14 are fixedly connected to the upper surface of the material distribution box 3. The discharge pipe assembly 4 includes a discharge pipe 15, a mounting base 16, and a second fixing bolt 17. The mounting base 16 is fixedly connected to the lower outer surface of the discharge pipe 15 and slidably connected to the inner wall of the two limiting plates 14. A switch valve 18 is provided on the discharge pipe 15. The second fixing bolt 17 is threadedly connected to the surface of the limiting plate 14, and the surface of the mounting base 16 has positioning holes 19 corresponding to the second fixing bolt 17. The material distribution box 3 is connected to the upper surface of the material distribution box 3 via the limiting plates 14 and the mounting base 16. The positioning hole 19 and the second fixing bolt 17 are used to loosen the second fixing bolt 17, which allows the mounting base 16 to slide on the inner wall of the limiting plate 14, thereby allowing the discharge pipe 15 to be disassembled for cleaning. By tightening the second fixing bolt 17 and inserting it into the positioning hole 19, the mounting base 16 and the discharge pipe 15 can be fixed. By setting the switch valve 18, each discharge pipe 15 can be individually controlled, thereby realizing the delivery of materials to a specific silo 5.

[0029] The material of the hopper 5 is metal. The lower surface of the hopper 5 is provided with multiple metal support legs 20 arranged in a ring array. This design can facilitate the pre-generated beads in the hopper 5 to conduct static electricity from the hopper 5 to the ground through the metal support legs 20.

[0030] The connecting end plate 8 is made of metal, and a steel wire 21 is fixedly connected to the lower end of the connecting end plate 8. A grounding conductive ball 22 is fixedly connected to the lower end of the steel wire 21. By setting up a metal push rod 9, connecting end plate 8, steel wire 21 and grounding conductive ball 22, the static electricity carried on the surface of the pre-expanded beads can be discharged by contacting the metal push rod 9 with the pre-expanded beads. Then, the static electricity is conducted to the ground through the connecting end plate 8, steel wire 21 and grounding conductive ball 22 in sequence, which effectively avoids the generation of static electricity by friction during the transportation of pre-expanded beads.

[0031] 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.

[0032] 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 conveying device for pre-expanding beads for the production of EPS foamed plastic articles, comprising a body (1) of an EPS pre-expander, characterized in that: The side of the EPS pre-expander body (1) is communicated with a conveying pipe (2), one end of the conveying pipe (2) is communicated with a material distribution box (3) away from the EPS pre-expander body (1), the surface of the material distribution box (3) is communicated with a discharge pipe assembly (4), one end of the discharge pipe assembly (4) extends into a hopper (5) away from the material distribution box (3), and the inside of the conveying pipe (2) is provided with a cleaning mechanism (6). The cleaning mechanism (6) comprises a driving mechanism (7), a connecting end plate (8), a plurality of metal push rods (9), a supporting ring (10) and an annular cleaning brush (11), the supporting ring (10) is slidingly connected to the inner wall of the conveying pipe (2), the annular cleaning brush (11) is fixedly connected to the surface of the supporting ring (10) and abuts against the inner wall of the conveying pipe (2), one end of the metal push rod (9) is fixedly connected to the surface of the supporting ring (10), the other end of the metal push rod (9) penetrates to the outside of the material distribution box (3), the connecting end plate (8) is fixedly connected to the end of the metal push rod (9), and the driving mechanism (7) is fixedly installed on the surface of the material distribution box (3) and used for driving the reciprocating movement of the connecting end plate (8).

2. A conveying device for EPS foam article production pre-expansion beads according to claim 1, characterized in that: The driving mechanism (7) can be a pneumatic telescopic rod, an electric telescopic rod or a hydraulic telescopic rod.

3. A conveying device for EPS foam article production pre-expansion beads according to claim 1, characterized in that: Both ends of the conveying pipe (2) are integrally formed with an ear plate (12), and the surface of the ear plate (12) is threadedly connected with two groups of first fixing bolts (13) used for fixing the conveying pipe (2).

4. The delivery device for EPS foam article production pre-expansion beads according to claim 1, wherein: The number of the discharge pipe assemblies (4) is multiple, and the discharge pipe assemblies (4) are detachably fixedly installed on the surface of the material distribution box (3).

5. A conveying device for EPS foam article production pre-expansion beads according to claim 4, characterized in that: The upper surface of the material distribution box (3) is fixedly connected with two limiting plates (14), the discharge pipe assembly (4) comprises a discharge pipe (15), a mounting seat (16) and a second fixing bolt (17), the mounting seat (16) is fixedly connected to the outer surface of the lower end of the discharge pipe (15) and slidingly connected with the inner walls of the two limiting plates (14), the discharge pipe (15) is provided with an on-off valve (18), the second fixing bolt (17) is threadedly connected to the surface of the limiting plate (14), and the surface of the mounting seat (16) is provided with a positioning hole (19) corresponding to the second fixing bolt (17).

6. A conveying device for EPS foam article production pre-expansion beads according to claim 1, characterized in that: The material of the hopper (5) is metal, and the lower surface of the hopper (5) is provided with a plurality of annularly arranged metal supporting legs (20).

7. A conveying device for EPS foam article production pre-expansion beads according to claim 1 characterized in that: The material of the connecting end plate (8) is metal, and the lower end of the connecting end plate (8) is fixedly connected with a steel wire (21), and the lower end of the steel wire (21) is fixedly connected with a grounding conductive ball (22).

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