Feeding cylinder of single-screw extruder

Abstract

The utility model provides a feeding cylinder of a single-screw extruder, which comprises a hopper, a crushing box arranged above the hopper, two first motors arranged on one side of the crushing box, and a first rotating shaft arranged on one side of each first motor, penetrating into the crushing box and rotatably connected with a bearing on the inner wall of the crushing box. A crushing roller is installed on the first rotating shaft, a supporting frame is installed in the hopper, a second motor is fixed to the supporting frame, a second rotating shaft is arranged below the second motor, the second rotating shaft penetrates through the supporting frame to the position below the hopper, a spiral blade is installed on the second rotating shaft, a baffle is installed below the second rotating shaft, and a discharging port is formed in the baffle. According to the utility model, the crushing roller is arranged above the hopper and is used for crushing fed materials, so that when various materials are fed, the crushed materials can be mixed more sufficiently and uniformly; and when block materials are encountered, the block materials are crushed into small blocks, so that the materials are conveyed more smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of feeding devices, in particular to a feeding barrel of a single-screw extruder. Background Art

[0002] The single screw extruder is one of the commonly used equipment in the granulation process. It relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the materials, and granulate them through the die molding. A feeding device is usually installed at the feed inlet of the single screw extruder to feed the materials into the single screw extruder.

[0003] For example, a feeding device for a single-screw extruder with announcement number CN218139762U has a motor on the upper part of the support rod, and the output end of the motor is fixedly connected to a rotating shaft that extends into the inner cavity of the feed hopper and is coaxially arranged with the feed hopper, and a number of stirring blades are arranged on the shaft body of the rotating shaft, and a straight feed pipe connected to the feed hopper is provided at the lower end of the feed hopper, a partition is provided at the upper part of the inner cavity of the straight feed pipe, and an opening for unloading is provided on the partition, and a feed roller for sealing the opening is rotatably connected to the inner cavity of the straight feed pipe, and a number of storage troughs for receiving raw materials discharged through the opening are evenly distributed on the surface of the feed roller body; the utility model can not only fully and effectively stir and mix the raw materials and additives through the cooperation of the stirring blades and the feed rollers, thereby providing a guarantee for the high-quality production of subsequent products, but also realize the continuous, intermittent and quantitative feeding of materials, thereby providing strong support for the reasonable and efficient processing and production of single-screw extruders.

[0004] However, when encountering agglomerated materials or materials with poor fluidity, there will be problems with poor feeding or blockage in the later stage of feeding; when mixing multiple materials together, it is easy to have problems with uneven mixing of multiple materials. The feeding hopper cannot feed these agglomerated materials into the single-screw extruder evenly and continuously, thus affecting the normal production. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a feeding barrel of a single-screw extruder.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A single-screw extruder feeding barrel comprises a hopper, a crushing box is installed above the hopper, two first motors are provided on one side of the crushing box, a first rotating shaft is provided on one side of the first motor, the first rotating shaft penetrates into the crushing box and is rotatably connected to a bearing on the inner wall of the crushing box, a crushing roller is installed on the first rotating shaft, a support frame is installed inside the hopper, a second motor is fixed on the support frame, a second rotating shaft is provided below the second motor, the second rotating shaft penetrates the support frame to below the hopper, a spiral blade is installed on the second rotating shaft, a baffle is installed below the second rotating shaft, a discharge port is provided on the baffle, and the discharge port is connected to the spiral blade, a feeding pipe is installed below the hopper, a flange is provided below the feeding pipe, and a mounting hole is opened on the flange.

[0008] Furthermore, the two crushing rollers are staggeredly installed, so that the materials thrown into the crushing box can be crushed more fully.

[0009] Furthermore, the diameter of the hopper gradually decreases from top to bottom, and the materials are transported from the top of the hopper to the bottom to be piled up.

[0010] Furthermore, the baffle is fixedly connected to the lower part of the second rotating shaft, and a discharge port is provided on the baffle.

[0011] Furthermore, the baffles in the hopper can be replaced, and the diameter of the discharge port on each baffle is different.

[0012] Furthermore, a feed port is provided on the feeding pipe, and the diameter of the feed port is the same as the diameter of the discharge port.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, a crushing roller is installed above the hopper, and the crushing roller crushes the input materials. When multiple materials are input, the materials can be mixed more fully and evenly after crushing; when encountering agglomerated materials, the agglomerated materials are crushed into small pieces, so that the material transportation is smoother.

[0015] 2. In the utility model, a baffle is arranged inside the lower part of the hopper, and the material flows out from the discharge port of the baffle. When the discharge port is turned to the upper part of the feed port, the material flows into the feeding pipe from the discharge port, thereby achieving uniform and quantitative feeding to the extruder each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the support frame and the hopper of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the spiral blade of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the feed port of the utility model.

[0020] In the figure:

[0021] 1-hopper, 101-support frame, 102-baffle, 103-discharge port, 2-feeding pipe, 201-feeding port, 3-flange, 301-mounting hole, 4-first motor, 401-first rotating shaft, 402-crushing roller, 5-second motor, 501-second rotating shaft, 502-spiral blade, 503-protection cover, 6-crushing box. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] As attached Figure 1-4 shown.

[0024] A single-screw extruder feeding barrel comprises a hopper 1, a support frame 101 is installed inside the hopper 1, a second motor 5 is fixed on the support frame 101, a protective cover 503 is provided on the outside of the second motor 5, a second rotating shaft 501 is provided below the second motor 5, the second rotating shaft 501 passes through the support frame 101 to the bottom of the hopper 1, a spiral blade 502 is installed on the second rotating shaft 501, a baffle 102 is installed below the second rotating shaft 501, a discharge port 103 is provided on the baffle 102, and the discharge port 103 is connected to the spiral blade 502, and the discharge port 103 is connected to the spiral blade 502. A feeding pipe 2 is installed at the bottom, a feeding port 201 is opened on the feeding pipe 2, a flange 3 is provided at the bottom of the feeding pipe 2, a mounting hole 301 is opened on the flange 3, a crushing box 6 is installed above the hopper 1, a fixing seat is provided on one side of the crushing box 6, two first motors 4 are provided on the fixing seat, a first rotating shaft 401 is provided on one side of the first motor 4, the first rotating shaft 401 passes through the inside of the crushing box 6 and is fixed on the inner wall of the crushing box 6, a crushing roller 402 is installed on the first rotating shaft 401, and the crushing rollers 402 installed on the two first rotating shafts 401 are staggered.

[0025] The working process is: the device is installed on the extruder through the flange 3, and the two first motors 4 are started. The first motors 4 drive the two first shafts 401 to rotate in the opposite direction. The first shaft 401 drives the crushing roller 402 to rotate, and the material is thrown into the crushing box 6. The material is crushed by the crushing roller 402 and flows into the hopper 1. The second motor 5 is started, and the second motor 5 drives the second shaft 501 to rotate. The second shaft 501 drives the spiral blade 502 to rotate. The material is transported from the spiral blade 502 from top to bottom. Since the diameter of the hopper 1 decreases from top to bottom, the material will be accumulated and squeezed under the hopper 1. The baffle 102 rotates with the second shaft 501. When the discharge port 103 is turned to the feed port 201, the material flows from the hopper 1 into the feeding pipe 2, so that the material is evenly and continuously fed into the single screw extruder.

[0026] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A single screw extruder feeding barrel, comprising a hopper (1), characterized in that: A crushing box (6) is installed above the hopper (1), two first motors (4) are provided on one side of the crushing box (6), a first rotating shaft (401) is provided on one side of the first motor (4), the first rotating shaft (401) penetrates into the crushing box (6) and is rotatably connected to a bearing on the inner wall of the crushing box (6), a crushing roller (402) is installed on the first rotating shaft (401), a support frame (101) is installed inside the hopper (1), a second motor (5) is fixed on the support frame (101), and a second rotating shaft (402) is provided below the second motor (5). A rotating shaft (501), the second rotating shaft (501) passes through the support frame (101) to the bottom of the hopper (1), a spiral blade (502) is installed on the second rotating shaft (501), a baffle (102) is installed below the second rotating shaft (501), a discharge port (103) is provided on the baffle (102), and the discharge port (103) is connected to the spiral blade (502), a feeding pipe (2) is installed below the hopper (1), a flange (3) is provided below the feeding pipe (2), and a mounting hole (301) is opened on the flange (3).

2. A single screw extruder feeding barrel as claimed in claim 1, characterized in that: The two crushing rollers (402) are installed in a staggered manner.

3. A single screw extruder feeding barrel as claimed in claim 1, characterized in that: A protective cover (503) is provided on the outer side of the second motor (5).

4. A single screw extruder feeding barrel as claimed in claim 1, characterized in that: The discharge port (103) is connected to the bottom of the spiral blade (502).

5. A single screw extruder feeding barrel as claimed in claim 1, characterized in that: The feeding pipe (2) is provided with a feeding port (201).

Images