Thermoplastic product preheating and feeding device

Abstract

The utility model discloses a preheating and feeding device for thermoplastic plastic products, relates to the technical field of plastic manufacturing, and solves the technical problem of how to preheat thermoplastic plastic in the feeding process by utilizing waste heat discharged by a melting machine. Comprising a water tank, a head wheel, a tail wheel and a conveying belt, the tail wheel is rotationally installed in the water tank, the top of the tail wheel extends to the position above the water tank, a heat preservation cover is installed at the top of the water tank, the same side of the heat preservation cover and the same side of the water tank are jointly connected with a heat preservation channel, and the head wheel is installed in the heat preservation channel; multiple sections of zigzag coiled pipes are installed in the water tank, and the bottom of one end of each coiled pipe is communicated with an air inlet pipe extending to the outer side of the water tank. According to the utility model, the waste heat of the melting machine is utilized to preheat and feed thermoplastic plastics, so that the subsequent melting efficiency can be improved, and the loss of heat energy can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic manufacturing, in particular to a preheating and feeding device for thermoplastic plastic products. Background Art

[0002] Thermoplastic products refer to plastic products that can be softened or melted by heating and then cooled to harden. Thermoplastics have the characteristics of strong plasticity and recyclability, and are widely used in industrial production and daily life.

[0003] In the production process of thermoplastic plastic products, a melting machine is usually used to heat and melt solid thermoplastic plastics to provide molten material for the subsequent processing of plastic products. During the heating process, a large amount of waste heat will be discharged from the smoke exhaust port of the melting machine. Direct discharge of this part of heat will cause energy waste. Therefore, a thermoplastic plastic product preheating feeding device is proposed to recycle the waste heat discharged from the melting machine. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a preheating feeding device for thermoplastic plastic products, which solves the problem of how to preheat the thermoplastic plastics in the feeding process by using the waste heat discharged from the melting machine.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a preheating and feeding device for thermoplastic plastic products is proposed, comprising a water tank, a head wheel, a tail wheel and a conveyor belt, wherein the tail wheel is rotatably installed in the water tank, and the top of the tail wheel extends above the water tank, a heat preservation cover is installed on the top of the water tank, and a heat preservation channel is commonly connected to the same side of the heat preservation cover and the water tank, and the head wheel is installed in the heat preservation channel, the heat preservation channel comprises a first channel arranged obliquely and a second channel of a "7"-shaped structure, a plurality of sections of serpentine tubes arranged in a tortuous manner are installed in the water tank, the bottom of one end of the serpentine tube is connected to an air inlet pipe extending to the outside of the water tank, and the tube wall of the other end of the serpentine tube is connected to an air outlet pipe extending to the outside of the water tank, a plurality of upper rollers and lower rollers respectively located above and below the serpentine tube are rotatably installed in the water tank, and the plurality of upper rollers and the plurality of lower rollers are staggered, the conveyor belt is sleeved between the head wheel and the tail wheel, and the conveyor belt is arranged to bypass the plurality of upper rollers and the plurality of lower rollers.

[0006] As a further technical solution of the utility model, a pressure roller is rotatably installed on the inner wall of the heat preservation cover away from the tail wheel, the bottom of the pressure roller is in contact with the conveyor belt, and a heating element is installed on the pressure roller.

[0007] As a further technical solution of the utility model, the heating element includes an electric heating rod, which is fixedly installed on the inner wall of the heat preservation cover, and the pressure roller is rotatably sleeved on the electric heating rod, and the pressure roller is made of heat-conducting copper.

[0008] As a further technical solution of the utility model, the conveyor belt includes a metal mesh belt and a thermal conductive silicone belt, and the thermal conductive silicone belt is connected to the outer surface of the metal mesh belt.

[0009] As a further technical solution of the utility model, two guide rollers are rotatably installed between the inner walls of the water tank near the top, and one of the guide rollers is installed on the side wall of the water tank. The conveyor belt passes around the two guide rollers in sequence and extends to the outside of the water tank.

[0010] As a further technical solution of the utility model, one end of the heat-insulating cover close to the tail wheel is arranged as an opening, and a soft door curtain is installed at the opening of the heat-insulating cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the air inlet pipe is connected with the smoke exhaust port of the external melting machine, so that the exhaust smoke can flow through the serpentine pipe, thereby facilitating sufficient heat exchange with the water in the water tank, so that the water in the water tank absorbs heat and heats up. The head wheel cooperates with the tail wheel to drive the conveyor belt, and the conveyor belt passes through multiple upper rollers and multiple lower rollers, so that the conveyor belt can fully absorb heat and heat up in the water in the water tank. The heated and heated conveyor belt is not only convenient for feeding and conveying thermoplastic plastics, but also convenient for preheating them during the conveying process, which is beneficial to improving the efficiency of subsequent melting.

[0013] 2. In the utility model, the conveyor belt is conveniently guided by the pressure roller, and the pressure roller is conveniently heated and heated by the heating element, so that the heat of the pressure roller is conveniently transferred to the conveyor belt, thereby facilitating further heating of the thermoplastic plastic in the conveying process according to the preheating needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side view structural diagram of the connection part between the heat preservation cover and the box body in the utility model;

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the conveyor belt in the utility model;

[0017] Figure 4 It is a top view of the connection part between the serpentine pipe and the air outlet pipe in the utility model.

[0018] In the figure: 1. water tank; 2. head wheel; 3. tail wheel; 4. conveyor belt; 41. metal mesh belt; 42. thermal conductive silicone belt; 5. insulation cover; 6. insulation channel; 61. first channel; 62. second channel; 7. serpentine pipe; 8. air inlet pipe; 9. air outlet pipe; 10. upper rotating roller; 11. lower rotating roller; 12. pressure roller; 13. electric heating rod; 14. guide roller; 15. soft door curtain. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-4 As shown, the preheating feeding device for thermoplastic plastic products comprises a water tank 1, a head wheel 2, a tail wheel 3 and a conveyor belt 4. The conveyor belt 4 is sleeved between the head wheel 2 and the tail wheel 3. The head wheel 2 is driven by a motor (not shown in the figure). The conveyor belt 4 comprises a metal mesh belt 41 and a heat-conducting silicone belt 42. The heat-conducting silicone belt 42 is connected to the outer surface of the metal mesh belt 41, which is not only convenient for heat conduction, but also has a certain friction force to facilitate the feeding and conveying of thermoplastic plastics.

[0021] The tail wheel 3 is rotatably installed in the water tank 1, and the top of the tail wheel 3 extends to above the water tank 1. A heat preservation cover 5 is installed on the top of the water tank 1. The end of the heat preservation cover 5 close to the tail wheel 3 is opened, and a soft door curtain 15 is installed at the opening of the heat preservation cover 5 to reduce heat loss. The heat preservation cover 5 and the water tank 1 are connected to the same side with a heat preservation channel 6, and the head wheel 2 is installed in the heat preservation channel 6. The heat preservation channel 6 includes a first channel 61 arranged obliquely and a second channel 62 of a "7" shaped structure.

[0022] A plurality of sections of zigzag serpentine tubes 7 are installed in the water tank 1. The bottom of one end of the serpentine tube 7 is connected with an air inlet pipe 8 extending to the outside of the water tank 1, which is used to be connected with the smoke exhaust port of the external melting machine. The tube wall of the other end of the serpentine tube 7 is connected with an air outlet pipe 9 extending to the outside of the water tank 1, so as to discharge the smoke after heat exchange. A plurality of upper rollers 10 and lower rollers 11 are rotatably installed in the water tank 1, which are respectively located above and below the serpentine tube 7, and the plurality of upper rollers 10 and the plurality of lower rollers 11 are staggered, and the conveyor belt 4 is arranged to bypass the plurality of upper rollers 10 and the plurality of lower rollers 11, so as to extend the path of the conveyor belt 4 in the water tank 1, so as to facilitate the conveyor belt 4 to fully absorb heat and heat up in the water in the water tank 1.

[0023] Two guide rollers 14 are rotatably installed between the inner walls of the water tank 1 near the top, and one of the guide rollers 14 is installed at the side wall of the water tank 1. The conveyor belt 4 successively bypasses the two guide rollers 14 and extends to the outside of the water tank 1, so that the conveyor belt 4 can pass through the top side wall of the water tank 1, effectively preventing the water in the water tank 1 from overflowing. A pressure roller 12 is rotatably installed at the inner wall of the heat preservation cover 5 away from the tail wheel 3. The bottom of the pressure roller 12 is in contact with the conveyor belt 4, and a heating element is installed on the pressure roller 12. The heating element includes an electric heating rod 13, which is fixedly installed on the inner wall of the heat preservation cover 5. The pressure roller 12 is rotatably sleeved on the electric heating rod 13, and the pressure roller 12 is made of heat-conducting copper. The electric heating rod 13 is used to heat the pressure roller 12, so as to facilitate further heating of the thermoplastic plastic in the transportation process according to the preheating needs.

[0024] The working principle of the utility model is as follows: the air inlet pipe 8 is connected with the smoke exhaust port of the external melting machine, and the smoke discharged from the melting machine flows through the serpentine pipe 7, so that the water in the water tank 1 can be fully heat exchanged with the water, so that the water in the water tank 1 absorbs heat and heats up, driving the head wheel 2 to rotate, and cooperating with the tail wheel 3 to drive the conveyor belt 4, and the conveyor belt 4 passes through a plurality of upper rotating rollers 10 and a plurality of lower rotating rollers 11 to rotate, effectively extending the path of the conveyor belt 4 in the water tank 1, so that the conveyor belt 4 can be fully heat-absorbed and heated in the water in the water tank 1, and the conveyor belt 4 after heat absorption and heating can not only feed and transport the thermoplastic plastic, but also facilitate preheating it during the feeding and transportation process, thereby helping to improve the efficiency of subsequent melting, and when the preheating temperature is not enough, the electric heating rod 13 can be used to heat the pressure roller 12, and the heated pressure roller 12 can transfer heat to the conveyor belt 4, so that the conveyed thermoplastic plastic can be further heated, thereby meeting the preheating requirements.

[0025] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A preheating feeding device for thermoplastic products, comprising a water tank (1), a head wheel (2), a tail wheel (3) and a conveyor belt (4), characterized in that: The tail wheel (3) is rotatably mounted in the water tank (1), and the top of the tail wheel (3) extends above the water tank (1). A heat preservation cover (5) is mounted on the top of the water tank (1). The heat preservation cover (5) and the water tank (1) are connected to a heat preservation channel (6) on the same side. The head wheel (2) is mounted in the heat preservation channel (6). The heat preservation channel (6) includes a first channel (61) arranged obliquely and a second channel (62) of a "7"-shaped structure. A plurality of sections of serpentine tubes (7) arranged in a zigzag manner are mounted in the water tank (1). The bottom of one end of the serpentine tube (7) is The serpentine tube (7) is connected to an air inlet pipe (8) extending to the outside of the water tank (1), and the tube wall of the other end of the serpentine tube (7) is connected to an air outlet pipe (9) extending to the outside of the water tank (1). A plurality of upper rotating rollers (10) and lower rotating rollers (11) are rotatably installed in the water tank (1) and are respectively located above and below the serpentine tube (7). The plurality of upper rotating rollers (10) and the plurality of lower rotating rollers (11) are staggeredly distributed. The conveyor belt (4) is sleeved between the head wheel (2) and the tail wheel (3), and the conveyor belt (4) is arranged to bypass the plurality of upper rotating rollers (10) and the plurality of lower rotating rollers (11).

2. The thermoplastic plastic product preheating and feeding device according to claim 1, characterized in that: A pressure roller (12) is rotatably mounted on the inner wall of the heat-insulating cover (5) away from the tail wheel (3); the bottom of the pressure roller (12) is in contact with the conveyor belt (4), and a heating element is mounted on the pressure roller (12).

3. The thermoplastic plastic product preheating and feeding device according to claim 2, characterized in that: The heating element comprises an electric heating rod (13), the electric heating rod (13) is fixedly mounted on the inner wall of the heat preservation cover (5), the pressure roller (12) is rotatably sleeved on the electric heating rod (13), and the pressure roller (12) is made of heat-conducting copper.

4. The thermoplastic plastic product preheating and feeding device according to claim 1, characterized in that: The conveyor belt (4) comprises a metal mesh belt (41) and a heat-conducting silicone belt (42), wherein the heat-conducting silicone belt (42) is connected to the outer surface of the metal mesh belt (41).

5. The thermoplastic plastic product preheating and feeding device according to claim 1, characterized in that: Two guide rollers (14) are rotatably mounted between the inner walls of the water tank (1) near the top, and one of the guide rollers (14) is mounted on the side wall of the water tank (1). The conveyor belt (4) sequentially passes over the two guide rollers (14) and extends to the outside of the water tank (1).

6. The thermoplastic plastic product preheating and feeding device according to claim 1, characterized in that: One end of the heat-insulating cover (5) close to the tail wheel (3) is opened, and a soft door curtain (15) is installed at the opening of the heat-insulating cover (5).

Images