Screw extruder for PVC (polyvinyl chloride) pipes

Abstract

The utility model discloses a PVC (polyvinyl chloride) pipe screw extruder, and relates to the technical field of extruders. Comprising a supporting table, a fixing frame is fixed to the top end of the supporting table, an extruder penetrates through the fixing frame, a screw rod is rotationally connected to the inner wall of one end of the extruder, a rotating shaft is fixed to the end of the screw rod, and a second gear is fixed to the outer wall of the rotating shaft after the rotating shaft penetrates through the extruder. Compared with the prior art, the utility model has the following differences: materials enter the crushing box and then are crushed by the crushing mechanism, the crushed raw materials are screened by the screen, smaller materials enter the discharging pipe through the screen and then fall into the extruder, and larger materials enter the conveying box from one side of the screen through the discharging frame and then fall into the extruder. The first motor drives the connecting rod to rotate, the connecting rod rotates to drive the first gear to rotate, the first gear rotates to drive the second gear to rotate, the second gear rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to drive the screw rod to rotate, so that materials can move in the extruder.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a PVC pipe screw extruder. Background Art

[0002] The screw extruder for PVC pipe production is an auxiliary device for processing pipes, which has been widely used in the field of pipe processing; the existing screw extruder for PVC pipe production (Announcement No.: CN213082278U) has the following disadvantages in use:

[0003] During use, the material is screened through the screening rack, and the unqualified materials are located above the screening rack. The staff needs to take them out and process them again later, which is inconvenient. For this reason, this patent proposes a PVC pipe screw extruder to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a PVC pipe screw extruder to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PVC pipe screw extruder, comprising a support platform, a fixed frame is fixed on the top of the support platform, an extruder is penetrated inside the fixed frame, a screw rod is rotatably connected to the inner wall of one end of the extruder, a rotating shaft is fixed on the end of the screw rod, a second gear is fixed on the outer wall of the rotating shaft after the rotating shaft penetrates the extruder, a plurality of supporting legs are fixed on the top of the support platform, a crushing box is fixed on the top of the supporting legs, a discharge pipe is fixedly connected between the crushing box and the extruder, a crushing mechanism is penetrated inside the crushing box, a screen is installed inside the crushing box, a discharge port is opened on one side of the crushing box, a discharge rack is installed at the discharge port, a conveying box is fixed on one side of the discharge rack, a connecting rod is rotatably connected to the inner wall of the bottom end of the conveying box, an auger is fixed on the outer wall of the connecting rod, a first gear is fixed on the outer wall of the connecting rod after the connecting rod penetrates the conveying box, the first gear and the second gear are meshed, a connecting frame is fixed on the bottom end of the conveying box, a first motor is fixed on the bottom end of the connecting frame, and the output end of the first motor is fixed to the connecting rod after penetrating the connecting frame.

[0006] The crushing mechanism comprises two rotating rods rotatably connected between inner walls at both sides of the crushing box, and a plurality of crushing knives are fixed on the outer walls of the two rotating rods.

[0007] After the two rotating rods pass through the other side of the crushing box, third gears are fixed on the outer wall thereof, and the two third gears are meshed with each other. A second motor is fixed on one side of the crushing box, and the output end of the second motor passes through the crushing box and is fixed to one of the rotating rods.

[0008] A plurality of fixing plates are fixed to the inner wall of the crushing box, a spring is fixed to the top of the fixing plate, the spring and the bottom end of the screen are fixed, a fixing piece is fixed to the bottom end of the screen, and a vibration motor is installed on the fixing piece.

[0009] The outer wall of the other end of the extruder is screwed with a threaded sleeve, and a mold is fixed on the end of the threaded sleeve.

[0010] A controller is installed at one end of the crushing box, and the controller is electrically connected to the first motor, the second motor and the vibration motor.

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

[0012] The PVC pipe screw extruder is different from the prior art in that the material enters the crushing box and is then crushed by the crushing mechanism. The crushed raw materials are screened through the screen. Smaller materials enter the discharge pipe through the screen and then fall into the extruder. Larger materials enter the conveying box through the discharge rack from one side of the screen. The first motor drives the connecting rod to rotate, the connecting rod rotation drives the first gear to rotate, the first gear rotation drives the second gear rotation, the second gear rotation drives the rotating shaft to rotate, and the rotating shaft rotation drives the spiral rod to rotate, so that the material can move in the extruder and be extruded. The rotation of the connecting rod also drives the auger to rotate, so that the larger material will be transported into the crushing box again for further crushing until it passes through the screen, so that the size of the material entering the extruder is uniform, the melting efficiency of the raw material in the extruder is improved, and there is no need to manually take out the material in the screen and then process it. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 It is the first cross-sectional view of the utility model;

[0016] Figure 4 It is the second cross-sectional view of the present utility model.

[0017] In the figure: 1. support table; 2. fixed frame; 3. extruder; 4. conveying box; 5. crushing box; 6. controller; 7. discharge rack; 8. supporting legs; 9. discharge pipe; 10. second motor; 11. first gear; 12. second gear; 13. rotating shaft; 14. rotating rod; 15. crushing knife; 16. third gear; 17. screen; 18. connecting rod; 19. screw rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0019] In the process of processing the pipe, a PVC pipe screw extruder is needed. The PVC pipe screw extruder provided by the utility model can process the raw materials entering the extruder 3 to make the size uniform, thereby improving the melting efficiency of the raw materials in the extruder 3, so that the PVC pipe can be formed faster.

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a PVC pipe screw extruder, including a support platform 1, a fixing frame 2 is fixed on the top of the support platform 1, an extruder 3 is penetrated inside the fixing frame 2, a heating plate is installed in the extruder 3, a screw rod 19 is rotatably connected to the inner wall of one end of the extruder 3, a rotating shaft 13 is fixed to the end of the screw rod 19, and a second gear 12 is fixed to the outer wall of the rotating shaft 13 after the rotating shaft 13 penetrates the extruder 3, a plurality of supporting legs 8 are fixed on the top of the support platform 1, a crushing box 5 is fixed on the top of the supporting legs 8, a discharge pipe 9 is fixedly connected between the crushing box 5 and the extruder 3, and the crushing A crushing mechanism is arranged throughout the box 5, a screen 17 is installed inside the crushing box 5, a discharge port is opened on one side of the crushing box 5, a discharge rack 7 is installed at the discharge port, a conveying box 4 is fixed to one side of the discharge rack 7, a connecting rod 18 is rotatably connected to the inner wall of the bottom end of the conveying box 4, an auger is fixed to the outer wall of the connecting rod 18, a first gear 11 is fixed to the outer wall of the connecting rod 18 after the connecting rod 18 passes through the conveying box 4, the first gear 11 and the second gear 12 are meshed, a connecting rack is fixed to the bottom end of the conveying box 4, a first motor is fixed to the bottom end of the connecting rack, and the output end of the first motor is fixed to the connecting rod 18 after passing through the connecting rack.

[0021] It should be noted that the material enters the crushing box 5 and is then crushed by the crushing mechanism. The crushed raw materials are screened by the screen 17. Smaller materials pass through the screen 17 into the discharge pipe 9 and then fall into the extruder 3. Larger materials enter the conveying box 4 from one side of the screen 17 through the discharge rack 7. The connecting rod 18 is driven to rotate by the first motor, and the rotation of the connecting rod 18 drives the auger to rotate. In this way, the larger material will be transported into the crushing box 5 again for continued crushing until it passes through the screen 17. In addition, the rotation of the connecting rod 18 drives the first gear 11 to rotate, the rotation of the first gear 11 drives the second gear 12 to rotate, the rotation of the second gear 12 drives the rotating shaft 13 to rotate, and the rotation of the rotating shaft 13 drives the screw rod 19 to rotate, so that the material can move in the extruder 3 and thus be extruded.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the crushing mechanism includes two rotating rods 14 rotatably connected between the inner walls of the two sides of the crushing box 5, and the outer walls of the two rotating rods 14 are fixed with multiple crushing knives 15. After the two rotating rods 14 pass through the other side of the crushing box 5, the outer walls are fixed with third gears 16, and the two third gears 16 are meshed with each other. A second motor 10 is fixed to one side of the crushing box 5, and the output end of the second motor 10 passes through the crushing box 5 and is fixed to one of the rotating rods 14. Multiple fixing plates are fixed to the inner wall of the crushing box 5, and a spring is fixed to the top of the fixing plate. The spring and the bottom end of the screen 17 are fixed, and a fixing piece is fixed to the bottom end of the screen 17, and a vibration motor is installed on the fixing piece. The outer wall of the other end of the extruder 3 is screwed with a threaded sleeve, and a mold is fixed to the end of the threaded sleeve. A controller 6 is installed at one end of the crushing box 5, and the controller 6 is electrically connected to the first motor, the second motor 10 and the vibration motor.

[0023] It should be noted that the second motor 10 drives one of the rotating rods 14 to rotate, the rotation of the rotating rod 14 drives one of the third gears 16 to rotate, the rotation of one of the third gears 16 drives the other third gear 16 to rotate, so that the two rotating rods 14 rotate, and finally the crushing knife 15 rotates to crush the material, and the vibration motor drives the screen 17 to vibrate, so that the material can be screened from the screen 17.

[0024] Working principle: the material enters the crushing box 5 and then starts the second motor 10 through the controller 6. The second motor 10 drives one of the rotating rods 14 to rotate. The rotation of the rotating rod 14 drives one of the third gears 16 to rotate. The rotation of one of the third gears 16 drives the other third gear 16 to rotate, so that the two rotating rods 14 rotate, and finally the crushing knife 15 rotates to crush the material. The vibration motor drives the screen 17 to vibrate, so that the material can be screened from the screen 17. Smaller materials pass through the screen 17 into the discharge pipe 9 and then fall into the extruder 3, and larger materials are The material enters the conveying box 4 through the discharge rack 7 from one side of the screen 17, and the first motor is started by the controller 6. The first motor drives the connecting rod 18 to rotate, and the rotation of the connecting rod 18 drives the auger to rotate, so that the larger material will be transported into the crushing box 5 again for further crushing until it passes through the screen 17. In addition, the rotation of the connecting rod 18 drives the first gear 11 to rotate, and the rotation of the first gear 11 drives the second gear 12 to rotate, and the rotation of the second gear 12 drives the rotating shaft 13 to rotate, and the rotation of the rotating shaft 13 drives the screw rod 19 to rotate, so that the material can move in the extruder 3 and thus be extruded.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A PVC pipe screw extruder, comprising a support platform (1), characterized in that: A fixing frame (2) is fixed on the top of the support platform (1), an extruder (3) is arranged inside the fixing frame (2), a screw rod (19) is rotatably connected to the inner wall of one end of the extruder (3), a rotating shaft (13) is fixed to the end of the screw rod (19), a second gear (12) is fixed to the outer wall of the rotating shaft (13) after the rotating shaft (13) passes through the extruder (3), a plurality of supporting legs (8) are fixed on the top of the support platform (1), a crushing box (5) is fixed on the top of the supporting legs (8), a discharge pipe (9) is fixedly connected between the crushing box (5) and the extruder (3), a crushing mechanism is arranged inside the crushing box (5), and the inside of the crushing box (5) A screen (17) is installed, a discharging port is opened on one side of the crushing box (5), a discharging frame (7) is installed at the discharging port, a conveying box (4) is fixed on one side of the discharging frame (7), a connecting rod (18) is rotatably connected to the inner wall of the bottom end of the conveying box (4), an auger is fixed to the outer wall of the connecting rod (18), a first gear (11) is fixed to the outer wall of the connecting rod (18) after the connecting rod (18) passes through the conveying box (4), the first gear (11) is meshed with the second gear (12), a connecting frame is fixed to the bottom end of the conveying box (4), a first motor is fixed to the bottom end of the connecting frame, and the output end of the first motor passes through the connecting frame and is fixed to the connecting rod (18).

2. A PVC pipe screw extruder according to claim 1, characterized in that: The crushing mechanism comprises two rotating rods (14) rotatably connected between the inner walls on both sides of the crushing box (5), and a plurality of crushing knives (15) are fixed on the outer walls of the two rotating rods (14).

3. A PVC pipe screw extruder according to claim 2, characterized in that: The two rotating rods (14) penetrate the other side of the crushing box (5), and the outer wall thereof is fixed with a third gear (16), and the two third gears (16) are meshed with each other. A second motor (10) is fixed to one side of the crushing box (5), and the output end of the second motor (10) penetrates the crushing box (5) and is fixed to one of the rotating rods (14).

4. A PVC pipe screw extruder according to claim 1, characterized in that: The inner wall of the crushing box (5) is fixed with a plurality of fixing plates, the top of the fixing plates is fixed with a spring, the spring and the bottom of the screen (17) are fixed, the bottom of the screen (17) is fixed with a fixing piece, and a vibration motor is installed on the fixing piece.

5. A PVC pipe screw extruder according to claim 1, characterized in that: A threaded sleeve is screwed onto the outer wall of the other end of the extruder (3), and a mold is fixed to the end of the threaded sleeve.

6. A PVC pipe screw extruder according to claim 1, characterized in that: A controller (6) is installed at one end of the crushing box (5), and the controller (6) is electrically connected to the first motor, the second motor (10) and the vibration motor.

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