Water circulation grain cutting bin

Abstract

The utility model relates to the technical field of plastic strip pelletizing, in particular to a water circulation pelletizing bin which comprises a box body, an extrusion die head and a cutter head, the extrusion die head and the cutter head are installed in the box body, the box body is provided with a water inlet pipe and a discharge port, the box body is provided with an annular water bin with the axis horizontally arranged, and one side, away from the extrusion die head, of the cutter head is fixedly connected with a transmission shaft. The axis of the transmission shaft coincides with the axis of the annular water sump, the box body is provided with a plurality of water inlet parts communicated with the water inlet pipe, and the water outlet direction of the water inlet parts is arranged in the tangential direction of the rotating direction of the cutter head. According to the device, tangential arrangement is adopted for water inflow, water rotation is facilitated, meanwhile, when the cutter head rotates, water in the annular water sump can be driven to rotate, when water flow rotates along with the cutter head, the resistance of the water flow to the cutter head can be reduced, the service life of the cutter head is prolonged, and the load of the rotating motor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic strip granulating technology field especially relates to a water circulation granulating bin. BACKGROUND

[0002] Most polymers must be mixed and then granulated into saleable raw materials before being made into final products. When the molten polymer is extruded from a die, a rotating cutter at high speed cuts the polymer into granules. The cutter contacts or closely approaches the die face. After the granules are cut, they are thrown away from the cutter by centrifugal force and are transported to a cooling medium.

[0003] The existing technology divides the plastic extruder into two cooling modes. The first mode is to cool through a water tank and then cut the granules. The second mode is to cut the granules directly in water. For the second mode, the cutter disc needs to be immersed in water and needs to rotate quickly during the cutting process. The water and the cutter disc form strong resistance. Not only is the cutter disc damaged, but also the load of the motor is large. UTILITY MODEL CONTENT

[0004] The utility model discloses a water circulation granulating bin to solve the problem that the cutter disc needs to be immersed in water and needs to rotate quickly during the cutting process in the prior art. The water and the cutter disc form strong resistance. Not only is the cutter disc damaged, but also the load of the motor is large.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A water circulation granulating bin comprises a box body, an extrusion die head and a cutter disc installed in the box body. The box body has a water inlet pipe and a discharge port. The box body has an annular water tank with an axis arranged horizontally. A transmission shaft is fixed to the side of the cutter disc away from the extrusion die head. The axis of the transmission shaft coincides with the axis of the annular water tank. The box body is provided with a plurality of water inlet parts in communication with the water inlet pipe. The water outlet direction of the water inlet part is arranged along the tangential direction of the rotation direction of the cutter disc.

[0007] The annular water tank is a conical tank. The extrusion die head is located at one end of the conical tank with a small diameter.

[0008] The box body has a first end plate and a second end plate. The first end plate is located at one end of the conical tank with a small diameter. The second end plate is located at one end of the conical tank with a large diameter. A first mounting port is arranged at the center of the first end plate. The extrusion die head is installed in the first mounting port. A second mounting port is arranged at the center of the second end plate. The transmission shaft is rotatably connected with the second mounting port.

[0009] The water inlet pipe is arranged close to the first end plate. The discharge port is arranged close to the second end plate.

[0010] The annular water sump is a cylindrical sump.

[0011] The outer circumference of one end of the box body close to the cutter disc is sealingly provided with a water collecting cover, the water collecting cover and the box body have a water collecting cavity, the water collecting cover is communicated with a water inlet pipe, the outer circumference of the box body is uniformly provided with a plurality of inclined water outlet pipes, the water inlet end of the water outlet pipe is located in the water collecting cavity, the water outlet end of the water outlet pipe is located in the annular water sump, and the inclined direction of the water outlet pipe is provided along the tangential direction of the rotation direction of the cutter disc.

[0012] The water circulating cutting bin has the beneficial effects that: the tangential arrangement of the water inlet of the device is beneficial to the rotation of water, and the water in the annular water sump can also be driven to rotate when the cutter disc rotates, the water flow can reduce the resistance of the water flow to the cutter disc when the water flow rotates with the cutter disc, and the service life of the cutter disc is prolonged and the load of the rotating motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the structure of the utility model;

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

[0015] Figure 3 It is a box body three-dimensional structure diagram of the utility model Figure 1 ;

[0016] Figure 4 It is a box body three-dimensional structure diagram of the utility model Figure 2 .

[0017] In the drawing: extrusion die head 1, cutter disc 2, first end plate 3, water outlet pipe 4, water collecting cover 5, water inlet pipe 6, water collecting cavity 7, box body 8, second end plate 9, transmission shaft 10, discharge port 11, annular water sump 12, first mounting port 13, second mounting port 14. DETAILED DESCRIPTION

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

[0019] Refer to Figures 1-4The water circulating pelletizing bin comprises a box 8, an extrusion die 1 and a cutter head 2 installed in the box 8, the box 8 is provided with a water inlet pipe 6 and a discharge port 11, the box 8 is provided with an annular water tank 12 arranged along the horizontal axis, a transmission shaft 10 is fixed to the side of the cutter head 2 away from the extrusion die 1, as an embodiment, the transmission shaft 10 is connected with a rotary motor, the axis of the transmission shaft 10 coincides with the axis of the annular water tank 12, the box 8 is provided with a plurality of water inlet parts in communication with the water inlet pipe 6, and the water outlet direction of the water inlet part is arranged along the tangential direction of the rotation direction of the cutter head 2.

[0020] During the operation of the device, water is continuously filled into the annular water tank 12 through the water inlet pipe 6, so that the water fills the entire annular water tank 12, the plastic pellets extruded by the extrusion die 1 and the water and master batch are continuously discharged from the discharge port 11, the annular water tank 12 is arranged along the horizontal axis, the axis of the transmission shaft 10 coincides with the axis of the annular water tank 12, and the water outlet direction of the water inlet part is arranged along the tangential direction of the rotation direction of the cutter head 2, the tangential arrangement of the water inlet part is beneficial to the rotation of the water, and the water in the annular water tank 12 can also be driven to rotate when the cutter head 2 rotates, the water flow can reduce the resistance of the water flow to the cutter head 2 when the water flow rotates with the cutter head 2, which is beneficial to prolong the service life of the cutter head 2 and reduce the load of the rotary motor.

[0021] As an embodiment, the annular water tank 12 is a conical tank, and the extrusion die 1 is located at the small-diameter end of the conical tank. The conical tank gradually forms an expanding structure from the small-diameter end to the large-diameter end, and the water flow gradually increases under the action of the centrifugal force during the flow process, so that the rotational flow speed can be more effectively accelerated, the rotational flow effect is stronger, and the resistance of the water flow to the cutter head is reduced.

[0022] As an embodiment, the box 8 is provided with a first end plate 3 and a second end plate 9, the first end plate 3 is located at the small-diameter end of the conical tank, the second end plate 9 is located at the large-diameter end of the conical tank, the first end plate 3 is provided with a first mounting hole 13 in the center, the extrusion die 1 is installed in the first mounting hole 13, the second end plate 9 is provided with a second mounting hole 14 in the center, the transmission shaft 10 is rotatably connected with the second mounting hole 14, the water inlet pipe 6 is arranged close to the first end plate 3, and the discharge port 11 is arranged close to the second end plate 9. This water inlet mode makes the water flow from the small-diameter end to the large-diameter end, which can better accelerate the rotation, make the water flow better follow the rotation of the cutter head, and reduce the resistance of the water to the cutter head.

[0023] Of course, the annular water tank 12 can also be a cylindrical tank, and the water flow rotation effect is slightly worse than that of the conical tank.

[0024] As an embodiment, the water inlet mode is shown in Figure 4The water collecting cover 5 is sealingly installed on the outer periphery of one end of the box 8 close to the cutter head 2, and has a water collecting cavity 7 with the box 8, and the water collecting cover 5 is communicated with the water inlet pipe 6, and the box 8 is uniformly distributed with several water outlet pipes 4 which are obliquely arranged, the water inlet end of the water outlet pipe 4 is located in the water collecting cavity 7, the water outlet end of the water outlet pipe 4 is located in the annular water tank 12, and the oblique direction of the water outlet pipe 4 is arranged along the tangential direction of the rotating direction of the cutter head 2. The external water enters the water collecting cavity 7 through the water inlet pipe 6, and the water flow is divided from the water collecting cavity 7 to the annular water tank 12 through the water outlet pipe 4, and the water inlet is formed into the same rotational flow as the rotating direction of the cutter head by the oblique arrangement of the water outlet pipe 4, so that the resistance of the water flow to the cutter head is reduced.

[0025] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can obtain the technical scheme, concept and design according to the technical scheme and the concept of the present application within the technical range disclosed by the present application, and the equivalent replacement or change of the present application, which should be covered in the protection scope of the present application.

Claims

1. A water-circulating pelletizing bin, comprising a housing (8), an extrusion die (1) and a cutter disc (2) installed within the housing (8), wherein the housing (8) has a water inlet pipe (6) and a discharge outlet (11), characterized in that, The housing (8) has an annular water tank (12) with its axis horizontally arranged. A drive shaft (10) is fixed to the side of the cutter head (2) away from the extrusion die (1). The axis of the drive shaft (10) coincides with the axis of the annular water tank (12). The housing (8) is provided with several water inlets that are connected to the water inlet pipe (6). The water outlet direction of the water inlet is tangential to the rotation direction of the cutter head (2).

2. The water-circulating pelletizing bin according to claim 1, characterized in that, The annular water tank (12) is a conical tank, and the extrusion die (1) is located at the end of the conical tank with a smaller diameter.

3. The water circulation pelletizing bin according to claim 2, characterized in that, The housing (8) has a first end plate (3) and a second end plate (9). The first end plate (3) is located at the end with a smaller diameter of the conical chamber, and the second end plate (9) is located at the end with a larger diameter of the conical chamber. A first mounting port (13) is provided at the center of the first end plate (3), and the extrusion die (1) is installed in the first mounting port (13). A second mounting port (14) is provided at the center of the second end plate (9), and the transmission shaft (10) is rotatably connected to the second mounting port (14).

4. A water-circulating pelletizing bin according to claim 3, characterized in that, The water inlet pipe (6) is located near the first end plate (3), and the outlet (11) is located near the second end plate (9).

5. A water-circulating pelletizing bin according to claim 1, characterized in that, The annular water tank (12) is a cylindrical tank.

6. A water-circulating pelletizing bin according to any one of claims 1-5, characterized in that, A water collection cover (5) is sealed on the outer circumference of the box (8) near the cutter head (2). A water collection cavity (7) is provided between the water collection cover (5) and the box (8). The water collection cover (5) is connected to the water inlet pipe (6). Several inclined water outlet pipes (4) are evenly distributed on the outer circumference of the box (8). The water inlet end of the water outlet pipe (4) is located in the water collection cavity (7), and the water outlet end of the water outlet pipe (4) is located in the annular water tank (12). The inclined direction of the water outlet pipe (4) is tangential to the rotation direction of the cutter head (2).

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