PE pipe raw material preheating device

Abstract

The utility model relates to the technical field of PE pipe production, in particular to a PE pipe raw material preheating device. The device comprises a preheating cylinder and a discharging assembly, the preheating cylinder is provided with a preheating cavity, a heating cavity and a plurality of communicating holes annularly distributed in the preheating cylinder, the communicating holes are all located between the preheating cavity and the heating cavity and communicated with the preheating cavity and the heating cavity, the preheating cylinder is provided with a plurality of heating blocks, the heating blocks are all located in the heating cavity, and the preheating cylinder is provided with a preheating assembly; the discharging assembly is arranged on the preheating cylinder. The preheating cavity and the heating cavity are communicated through the communicating hole, so that raw materials and heated air are fully mixed, and the preheating efficiency of the raw materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE pipe production, in particular to a PE pipe raw material preheating device. Background Art

[0002] PE (polyethylene) is generally used in water supply pipes at temperatures below 40°C and cannot be used for hot water delivery. PE pipe is a highly crystalline, non-polar thermoplastic resin. PE pipe production utilizes a raw material mixing and preheating device to mix and preheat the various plastic particles and additives used to make the pipe, facilitating subsequent blow molding and other processes.

[0003] Chinese patent announcement No. CN219748581U discloses a raw material mixing and preheating device for the production of pressure-resistant and impact-resistant pipes, including a support leg, a mixing barrel installed on the top of the support leg, a discharge pipe provided at the bottom of the mixing barrel, and an adjustment mechanism provided on the discharge pipe. The adjustment mechanism includes: an adjustment component, which is provided on the discharge pipe; a mounting part, one end of which is fixed to the mixing barrel and the other end is connected to the adjustment component; a support component, which is provided on both sides of the adjustment component and connected to the discharge pipe. Through the designed adjustment mechanism, the angle and length of the discharge pipe can be adjusted during use according to the actual processing needs, so as to meet different discharge needs, and it can also ensure the angle limit after adjustment. The overall flexibility is high and the deficiencies in the existing structure are improved.

[0004] However, the above technical solution has the following shortcomings: when preheating the PE pipe raw material, the preheating device heats the raw material through heat conduction of the heating wire, but the heat conduction will decay as the distance from the heating wire increases, which can easily lead to the raw material close to the heating wire being preheated, while the raw material far away from the heating wire needs to continue heating, thereby affecting the speed of the PE pipe raw material. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and propose a PE pipe raw material preheating device that improves the raw material preheating efficiency by connecting the preheating chamber and the heating chamber through a connecting hole to allow the raw material to be fully mixed with the heated air.

[0006] The technical solution of the present utility model is a PE pipe raw material preheating device, comprising: a preheating cylinder, which has a preheating chamber, a heating chamber, and a plurality of communicating holes distributed along a ring on the preheating cylinder, the plurality of communicating holes are all located between the preheating chamber and the heating chamber and are connected to the two, a plurality of heating blocks are provided on the preheating cylinder, the plurality of heating blocks are all located in the heating chamber, a fixed frame is provided in the preheating chamber, a stirring ring is rotatably provided on the outer circumference of the fixed frame; a preheating assembly, which comprises a motor a arranged at the top end of the preheating cylinder, a spiral conveying rod rotatably arranged on the preheating cylinder, and a feeding rack coaxially connected to the spiral conveying rod, the motor a is drivingly connected to the spiral conveying rod, the spiral conveying rod is in sliding contact with the inner circumference of the fixed frame, and the feeding rack is connected to the bottom end of the stirring ring. The discharging assembly includes a limit plate rotatably arranged on the preheating cylinder, a sliding block slidably arranged on the limit plate, an electric telescopic rod with both ends rotatably connected to the preheating cylinder and the sliding block respectively, a motor B arranged on the preheating cylinder, an active roller and a driven roller rotatably arranged on the preheating cylinder in parallel, and a conveyor belt arranged on the active roller and the driven roller, and the motor B is drivingly connected to the active roller.

[0007] Preferably, a plurality of stirring rods are evenly distributed on the outer circumference of the stirring ring, the preheating component is in sliding contact with the inner circumference of the fixing frame, and the preheating component is drivingly connected to the stirring ring.

[0008] Preferably, the preheating cylinder includes a preheating cylinder portion, a feed pipe portion, and a ventilation pipe portion that are interconnected. The ventilation pipe portion is provided with a control valve, and the feed pipe portion is provided with a closing assembly.

[0009] Preferably, the closing assembly includes a motor arranged at the top of the preheating cylinder, a transmission pulley connected to the motor, a screw rotatably arranged on the feed pipe, a lifting block threadedly connected to the screw, and a closing plate rotatably arranged on the feed pipe, the screw includes a screw portion and a transmission pulley portion, and a transmission belt is provided on the transmission pulley portion and the transmission pulley. Preferably, the preheating cylinder includes a preheating cylinder portion, a feed pipe portion, and a ventilation pipe portion that are interconnected, a control valve is provided on the ventilation pipe portion, and a closing assembly is provided on the feed pipe portion.

[0010] Compared with the prior art, the present invention has the following beneficial technical effects:

[0011] When the utility model is used, workers will pour raw materials and catalysts into the preheating chamber, the preheating component will stir the raw materials and catalysts, and the heating block will heat the air at the same time. The raw materials and catalysts will drive the air flow during the movement, and the heated air will mix with the raw materials and catalysts during the flow, so that the preheating effect of the raw materials in the preheating chamber is almost the same, thereby improving the preheating efficiency of the device, and the spiral conveying rod will send the raw materials at the bottom of the preheating chamber to the top of the preheating chamber, so as to ensure the preheating speed of the raw materials. After the raw materials are completely preheated, the feeding rack can push the raw materials out of the preheating cylinder, thereby reducing the work intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0013] Figure 2 A cross-sectional view of an embodiment of the present utility model;

[0014] Figure 3 for Figure 2 A magnified view of the structure at point A.

[0015] Figure markings: 1. Preheating cylinder; 101. Preheating cylinder; 1011. Preheating chamber; 1012. Heating chamber; 1013. Connecting hole; 102. Feed pipe; 103. Ventilation pipe; 2. Control valve; 3. Motor a; 4. Screw conveying rod; 5. Feeding rack; 6. Fixed rack; 7. Stirring ring; 8. Stirring rod; 9. Heating block; 10. Limiting plate; 11. Electric telescopic rod; 12. Motor b; 13. Active roller; 14. Driven roller; 15. Conveyor belt; 16. Motor; 17. Drive pulley; 18. Screw; 181. Screw part; 182. Drive pulley; 19. Transmission belt; 20. Lifting block; 21. Closing plate. DETAILED DESCRIPTION

[0016] Example 1

[0017] like Figure 1-Figure 3 As shown, a PE pipe raw material preheating device proposed in this embodiment includes a preheating cylinder 1, a preheating assembly and a discharge assembly. The preheating cylinder 1 has a preheating chamber 1011, a heating chamber 1012, and a plurality of connecting holes 1013 distributed along a ring on the preheating cylinder 1. The plurality of connecting holes 1013 are all located between the preheating chamber 1011 and the heating chamber 1012 and are connected to the two. A plurality of heating blocks 9 are provided on the preheating cylinder 1, and the plurality of heating blocks 9 are all located in the heating chamber 1012. A fixing frame 6 is provided in the preheating chamber 1011, and a stirring ring 7 is rotatably provided on the outer peripheral surface of the fixing frame 6.

[0018] The preheating assembly includes a motor a3 mounted at the top of the preheating cylinder 1, a screw conveying rod 4 rotatably mounted on the preheating cylinder 1, and a feed rack 5 coaxially connected to the screw conveying rod 4. The motor a3 is driven and connected to the screw conveying rod 4, which is in sliding contact with the inner circumference of the fixed frame 6. The feed rack 5 is connected to the bottom end of the stirring ring 7, and a plurality of stirring rods 8 are evenly distributed on the outer circumference of the stirring ring 7. The preheating assembly is in sliding contact with the inner circumference of the fixed frame 6 and is driven and connected to the stirring ring 7. The motor a3 drives the screw conveying rod 4 to rotate, which in turn drives the feed rack 5 to rotate, which in turn drives the stirring ring 7 to rotate. The plurality of stirring rods 8 on the outer circumference of the stirring ring 7 drive the raw materials to move. The screw conveying rod 4 delivers the raw materials from the bottom of the preheating chamber 1011 to the top of the preheating chamber 1011, thereby ensuring the preheating speed of the raw materials. After the raw materials are fully preheated, the feed rack 5 can push the raw materials out of the preheating cylinder 1, thereby reducing the workload of workers.

[0019] The discharging assembly includes a limit plate 10 rotatably arranged on the preheating cylinder 1, a sliding block slidably arranged on the limit plate 10, an electric telescopic rod 11 whose two ends are respectively rotatably connected to the preheating cylinder 1 and the sliding block, a motor b12 arranged on the preheating cylinder 1, an active roller 13 and a driven roller 14 rotatably arranged on the preheating cylinder 1 in parallel, and a conveyor belt 15 arranged on the active roller 13 and the driven roller 14. The motor b12 is driven and connected to the active roller 13. After the preheating of the raw materials is completed, the electric telescopic rod 11 drives the sliding block to move, and the sliding block drives the limit plate 10 to tilt downward. The raw materials flow to the conveyor belt 15 under the action of their own weight. The motor b12 drives the active roller 13 to rotate, and the raw materials flow out of the preheating device under the transportation of the conveyor belt 15, thereby avoiding the raw materials remaining in the device, thereby reducing the preheating cost of the raw materials.

[0020] When this embodiment is used, workers pour raw materials and catalysts into the preheating chamber 1011, the preheating component stirs the raw materials and catalysts, and the heating block 9 heats the air. The raw materials and catalysts drive the air flow during the movement, and the heated air mixes with the raw materials and catalysts during the flow, so that the preheating effect of the raw materials in the preheating chamber 1011 is almost the same, thereby improving the preheating efficiency of the device.

[0021] Example 2

[0022] like Figure 1 and Figure 3 As shown, this embodiment proposes a PE pipe raw material preheating device. Compared with Example 1, in this embodiment, the preheating cylinder 1 includes a preheating cylinder portion 101, a feed pipe portion 102, and a ventilation pipe portion 103 that are interconnected. The ventilation pipe portion 103 is provided with a control valve 2, and the feed pipe portion 102 is provided with a closing component.

[0023] The closing assembly includes a motor 16 arranged at the top of the preheating cylinder 101, a transmission pulley 17 driven by the motor 16, a screw rod 18 rotatably arranged on the feed pipe 102, a lifting block 20 threadedly connected to the screw rod 18, and a closing plate 21 rotatably arranged on the feed pipe 102. The screw rod 18 includes a screw rod portion 181 and a transmission pulley portion 182. A transmission belt 19 is provided on the transmission pulley portion 182 and the transmission pulley 17.

[0024] When this embodiment is in use, the motor 16 drives the transmission pulley 17 to rotate, and the transmission pulley 17 drives the transmission pulley part 182 to rotate through the transmission belt 19. Through the rotation direction of the screw rod 18, the lifting block 20 is always in contact with the closing plate 21. During the process of preheating the raw materials, the lifting block 20 pushes the closing plate 21 to close the feed pipe part 102, thereby reducing the cost of preheating the raw materials.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A PE pipe raw material preheating device, characterized in that: include: A preheating cylinder (1) has a preheating chamber (1011), a heating chamber (1012), and a plurality of communicating holes (1013) distributed along a ring on the preheating cylinder (1), wherein the plurality of communicating holes (1013) are located between the preheating chamber (1011) and the heating chamber (1012) and are connected to the two. The preheating cylinder (1) is provided with a plurality of heating blocks (9), wherein the plurality of heating blocks (9) are located in the heating chamber (1012), a fixing frame (6) is provided in the preheating chamber (1011), and a stirring ring (7) is rotatably provided on the outer peripheral surface of the fixing frame (6); A preheating assembly comprises a motor a (3) arranged at the top end of a preheating cylinder (1), a screw conveying rod (4) rotatably arranged on the preheating cylinder (1), and a feeding rack (5) coaxially connected to the screw conveying rod (4), wherein the motor a (3) is drivingly connected to the screw conveying rod (4), the screw conveying rod (4) is in sliding contact with the inner circumference of a fixing rack (6), and the feeding rack (5) is connected to the bottom end of a stirring ring (7); A discharging assembly comprises a limit plate (10) rotatably arranged on a preheating cylinder (1), a sliding block slidably arranged on the limit plate (10), an electric telescopic rod (11) with two ends rotatably connected to the preheating cylinder (1) and the sliding block, a motor b (12) arranged on the preheating cylinder (1), an active roller (13) and a driven roller (14) rotatably arranged on the preheating cylinder (1), and a conveyor belt (15) arranged on the active roller (13) and the driven roller (14), wherein the motor b (12) is drivingly connected to the active roller (13).

2. A PE pipe raw material preheating device according to claim 1, characterized in that: A plurality of stirring rods (8) are evenly distributed on the outer peripheral surface of the stirring ring (7), the preheating component is in sliding contact with the inner peripheral surface of the fixing frame (6), and the preheating component is drivingly connected to the stirring ring (7).

3. A PE pipe raw material preheating device according to claim 1, characterized in that: The preheating cylinder (1) comprises a preheating cylinder portion (101), a feed pipe portion (102), and a ventilation pipe portion (103) which are interconnected. A control valve (2) is provided on the ventilation pipe portion (103), and a sealing component is provided on the feed pipe portion (102).

4. A PE pipe raw material preheating device according to claim 1, characterized in that: The sealing assembly comprises a motor (16) arranged at the top end of the preheating cylinder (101), a transmission pulley (17) connected to the motor (16), a screw rod (18) rotatably arranged on the feed pipe (102), a lifting block (20) threadedly connected to the screw rod (18), and a sealing plate (21) rotatably arranged on the feed pipe (102), the screw rod (18) comprises a screw rod portion (181) and a transmission pulley portion (182), and a transmission belt (19) is arranged on the transmission pulley portion (182) and the transmission pulley (17).

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