Screw extruder capable of reducing blocking rate

Abstract

The screw extruder comprises a machine table, a machine cover is arranged on the upper end face of the machine table, a discharging hopper is arranged above the machine cover, a smashing box is arranged on the upper end face of the discharging hopper, a motor is arranged on the outer side of the smashing box, one end of the motor is fixedly connected with a main gear, and the other end of the motor is fixedly connected with a screw rod. A driven gear is connected to the outer wall of the main gear in a meshed mode, connecting rods are fixedly connected to the middles of the main gear and the driven gear, crushing rollers are fixedly installed on the outer walls of the two connecting rods, a fixing frame is installed on the lower end face of the machine table, universal wheels are connected to the interior of the fixing frame in a rolling mode, and a threaded rotary knob is arranged on the outer side of the fixing frame. A threaded rod is fixedly connected to the threaded knob, one end of the threaded rod is clamped to the ratchet wheel, a driving module is arranged on the upper end face of the machine table, and one end of the driving module is connected to the screw rod, so that raw materials can be crushed, blockage is prevented during discharging, and the stability of the extruder is improved while the extruder is convenient to move.

Description

Technical Field

[0001] This utility model relates to the field of screw extruder technology, and in particular to a screw extruder with reduced clogging rate. Background Technology

[0002] Single-screw extruders are mainly used for extruding soft and hard thermoplastics such as polyvinyl chloride (PVC) and polyethylene (PE). They can process a variety of plastic products, such as blown films, extruded pipes, pressed plates, and drawn ribbons, and can also be used for melt granulation. These plastic extruders feature advanced design, high quality, good plasticization, and low energy consumption. They employ involute gear transmission, resulting in low noise, stable operation, high load capacity, and long service life.

[0003] A patent with publication number CN214111396 U discloses a screw extruder. The extruder has a housing, and an extrusion mechanism is set on the top of the housing. A control box is fixed to one side of the outer wall of the extrusion mechanism by bolts. A fixing plate is fixed to one side of the outer wall of the bottom of the extrusion mechanism by bolts. A sleeve is fitted onto the outer wall of the extrusion mechanism. A heating mechanism is set on the outer wall of the sleeve. A cooling jacket is fitted onto one end of the sleeve. A discharge port is opened at the other end of the sleeve. A discharge pipe is fixed to the inner circumference of the discharge port by threads.

[0004] However, extruders do not have the capability to crush raw materials before extrusion. The existing raw materials are relatively large in volume, and without finening, they are prone to causing blockages inside the extruder. Maintenance is relatively difficult, time-consuming, and labor-intensive, affecting the processing efficiency of the extruder. To address the above problems, we propose an improved and upgraded screw extruder with reduced blockage rate. Utility Model Content

[0005] The purpose of this invention is to provide a screw extruder with reduced clogging rate to solve the problems mentioned in the background art.

[0006] To solve the above problems, the following technical solutions are provided:

[0007] Design a screw extruder with reduced clogging rate, including a machine base. A cover is installed on the upper surface of the machine base, and a hopper is located above the cover. A crushing box is installed on the upper surface of the hopper. A motor is installed on the outside of the crushing box. A main gear is fixedly connected to one end of the motor. A driven gear is meshed with the outer wall of the main gear. Connecting rods are fixedly connected to the middle of both the main gear and the driven gear. Crushing rollers are fixedly installed on the outer walls of both connecting rods. A fixing frame is installed on the lower surface of the machine base. Universal wheels are rotatably connected inside the fixing frame. A threaded knob is installed on the outside of the fixing frame. A threaded rod is fixedly connected to the threaded knob, and one end of the threaded rod is engaged with a ratchet.

[0008] Furthermore, a drive module is provided on the upper surface of the machine platform, and one end of the drive module is connected to the screw rod, which is rotatably installed inside the machine cover.

[0009] Furthermore, a filter box is provided on the upper surface of the machine cover, and a feeding hopper is fixedly connected to the upper surface of the filter box. A feeding pipe is provided at the lower end of the crushing box, and one end of the feeding pipe is located inside the feeding hopper.

[0010] Furthermore, two fixed frames are installed on the upper surface of the crushing box, and a cover plate is provided inside the two fixed frames. A slider is provided on the outer wall of each cover plate and the slider is slidably connected inside the fixed frame. A handle is provided on the top of each of the two cover plates.

[0011] Furthermore, the motor is fixedly mounted on the mounting base, and the mounting base is fixedly connected to the outer wall of the crushing box, and the connecting rod is rotatably mounted on the crushing box.

[0012] Furthermore, a telescopic rod is fixedly installed on the fixed frame, and an anti-slip pad is fixedly connected to one end of the telescopic rod. The ratchet is fixedly installed on the outer wall of the universal wheel, and one end of the threaded rod is threadedly connected to the fixed frame, and the extended end is connected to the ratchet.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model device includes a crushing box, a motor, a main gear, a driven gear, a connecting rod, a crushing roller, and a cover plate. The motor on the drive mounting base rotates the main gear, which in turn drives the driven gear. Both the main gear and driven gear simultaneously rotate the crushing roller to crush the raw material. The high pressure generated by the relative rotation of the two wear-resistant crushing rollers crushes the raw material, which then falls from the feed pipe into the feed hopper. This crushing process prevents the raw material from becoming too large and causing blockages in the extruder, thus improving the processing efficiency of the extruder, reducing the workload of the operators, and featuring a simple structure.

[0015] 2. This utility model device is equipped with components such as a fixed frame, telescopic rod, anti-slip pad, universal wheel, threaded knob, threaded rod, and ratchet. The extruder is moved by the universal wheel via the push rod at the rear end of the machine. When the extruder is processing, the anti-slip pad is supported by the telescopic rod on the fixed frame. At the same time, rotating the threaded knob drives the threaded rod to rotate, so that the threaded rod engages with the ratchet on the outer wall of the universal wheel, which facilitates the limiting of the universal wheel. This allows for convenient movement of the extruder while improving support stability and making it easy to handle.

[0016] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a screw extruder with reduced clogging rate according to the present invention;

[0019] Figure 2 This is a side view of a screw extruder with reduced clogging rate according to the present invention.

[0020] Figure 3 for Figure 1 A partial enlarged diagram of the split structure;

[0021] Figure 4 for Figure 1 A magnified diagram of the partially disassembled structure.

[0022] In the diagram: 1. Machine base; 2. Machine cover; 3. Drive module; 4. Filter box; 5. Feed hopper; 6. Crushing box; 61. Mounting base; 62. Motor; 63. Main gear; 64. Driven gear; 65. Slider; 66. Connecting rod; 67. Crushing roller; 68. Fixing frame; 69. Cover plate; 7. Fixing bracket; 71. Casters; 72. Telescopic rod; 73. Anti-slip pad; 74. Threaded knob; 75. Threaded rod; 76. Ratchet; 8. Spiral rod; 9. Feed pipe. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 4As shown, this embodiment provides a screw extruder with reduced clogging rate, including a machine base 1. A cover 2 is provided on the upper surface of the machine base 1, and a hopper 5 is provided above the cover 2. A crushing box 6 is provided on the upper surface of the hopper 5. A motor 62 is provided on the outside of the crushing box 6. A main gear 63 is fixedly connected to one end of the motor 62. A driven gear 64 is meshed with the outer wall of the main gear 63. A connecting rod 66 is fixedly connected to the middle of both the main gear 63 and the driven gear 64. Crushing rollers 67 are fixedly installed on the outer walls of both connecting rods 66. A fixing frame 7 is installed on the lower surface of the machine base 1. A universal wheel 71 is rolled inside the fixing frame 7. A threaded knob 74 is provided on the outside of the fixing frame 7. A threaded rod 75 is fixedly connected to the threaded knob 74. One end of the threaded rod 75 is engaged with a ratchet 76.

[0025] Preferably, the upper surface of the machine base 1 is provided with a drive module 3 and one end of the drive module 3 is connected to the screw rod 8. The screw rod 8 is rotatably installed inside the machine cover 2, which facilitates the conveying of raw materials through the screw rod 8. The upper surface of the machine cover 2 is provided with a filter box 4 and a feeding hopper 5 is fixedly connected to the upper surface of the filter box 4. The lower end of the crushing box 6 is provided with a feeding pipe 9 and one end of the feeding pipe 9 is located inside the feeding hopper 5, which facilitates the filtration of the crushed raw materials through the filter box 4.

[0026] Preferably, two fixed frames 68 are installed on the upper surface of the crushing box 6. A cover plate 69 is provided inside the two fixed frames 68. A slider 65 is provided on the outer wall of each cover plate 69 and the slider 65 is slidably connected inside the fixed frame 68. A handle is provided on the top of each cover plate 69 to protect the crushing roller 67 inside the crushing box 6 when the extruder is not in use. The motor 62 is fixedly installed on the mounting base 61 and the mounting base 61 is fixedly connected to the outer wall of the crushing box 6 to facilitate stable fixation of the motor 62. The connecting rod 66 is rotatably installed on the fixed frame 7 of the crushing box 6 and a telescopic rod 72 is fixedly provided. One end of the telescopic rod 72 is fixedly connected to an anti-slip pad 73. The ratchet 76 is fixedly installed on the outer wall of the universal wheel 71. One end of the threaded rod 75 is threadedly connected to the fixed frame 7 and the extended end is connected to the ratchet 76 to facilitate limiting the universal wheel 71.

[0027] The working principle and process of this utility model are as follows: Open the cover plate 69 and slide the slider 65 into the fixed frame 68. The motor 62 on the drive mounting base 61 then drives the main gear 63 to rotate. The main gear 63 drives the driven gear 64 to rotate, causing both the main gear 63 and the driven gear 64 to simultaneously drive the crushing roller 67 to rotate and crush the raw material. The high pressure generated by the relative rotation of the two wear-resistant crushing rollers 67 is used to crush the raw material. After entering the gap between the two rollers, the raw material is crushed into the required particle size by the squeezing force of the relative rotation of the two rollers. Then, the material exits the gap... The feed tube 9 falls into the hopper 5, which can crush the raw materials to prevent them from being too large and causing problems such as extruder blockage. The raw materials are then screened through the filter screen in the filter box 4. The extruder is then moved by the push rod at the rear end of the machine base 1 using the casters 71. When the extruder is processing, the telescopic rod 72 on the fixed frame 7 drives the anti-slip pad 73 for support. At the same time, the threaded knob 74 is turned to drive the threaded rod 75 to rotate, so that the threaded rod 75 engages with the ratchet 76 on the outer wall of the caster 71, which facilitates the limiting of the caster 71. This allows for convenient movement of the extruder while improving support stability.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A screw extruder with reduced clogging rate, characterized in that, The system includes a machine base (1), a cover (2) on the upper surface of the machine base (1), and a hopper (5) above the cover (2). A crushing box (6) is located on the upper surface of the hopper (5). A motor (62) is located on the outside of the crushing box (6). A main gear (63) is fixedly connected to one end of the motor (62). A driven gear (64) is meshed with the outer wall of the main gear (63). The main gear (63) and the driven gear (64) are connected in a meshing manner. Each part is fixedly connected to a connecting rod (66), and a crushing roller (67) is fixedly installed on the outer wall of each of the two connecting rods (66). A fixed frame (7) is installed on the lower end face of the machine base (1). A universal wheel (71) is rolled inside the fixed frame (7). A threaded knob (74) is provided on the outside of the fixed frame (7). A threaded rod (75) is fixedly connected to the threaded knob (74). One end of the threaded rod (75) is engaged with a ratchet (76).

2. The screw extruder for reducing clogging rate according to claim 1, characterized in that, The upper surface of the machine base (1) is provided with a drive module (3) and one end of the drive module (3) is connected to the screw rod (8). The screw rod (8) is rotatably installed inside the machine cover (2).

3. A screw extruder for reducing clogging rate according to claim 1, characterized in that, The upper surface of the machine cover (2) is provided with a filter box (4) and the upper surface of the filter box (4) is fixedly connected with a feeding hopper (5). The lower end of the crushing box (6) is provided with a feeding pipe (9) and one end of the feeding pipe (9) is located inside the feeding hopper (5).

4. A screw extruder for reducing clogging rate according to claim 1, characterized in that, Two fixed frames (68) are installed on the upper surface of the crushing box (6). A cover plate (69) is provided inside the two fixed frames (68). A slider (65) is provided on the outer wall of each cover plate (69) and the slider (65) is slidably connected inside the fixed frame (68). A handle is provided on the top of each of the two cover plates (69).

5. A screw extruder for reducing clogging rate according to claim 1, characterized in that, The motor (62) is fixedly mounted on the mounting base (61), and the mounting base (61) is fixedly connected to the outer wall of the crushing box (6). The connecting rod (66) is rotatably mounted on the crushing box (6).

6. A screw extruder for reducing clogging rate according to claim 1, characterized in that, The fixed frame (7) is fixedly provided with a telescopic rod (72) and an anti-slip pad (73) is fixedly connected to one end of the telescopic rod (72). The ratchet (76) is fixedly installed on the outer wall of the universal wheel (71). One end of the threaded rod (75) is threadedly connected to the fixed frame (7) and the extended end is connected to the ratchet (76).

Images