Granulator with water spraying function

Abstract

The utility model relates to the field of pelletizer production technologies, and provides a pelletizer with a water spraying function, the pelletizer comprises a pelletizing box and a spraying mechanism, the pelletizing box is internally provided with a pelletizing cavity; the pelletizing box is provided with a discharge port, and the discharge port is communicated with the pelletizing cavity; the spraying mechanism comprises a first spray head, a first water passing pipe and a first conveying pump, the first spray head is arranged in the granulation cavity, one end of the first water passing pipe is communicated with the first spray head, and the other end of the first water passing pipe is externally connected with cooling water; the first conveying pump is arranged on the peripheral side of the first water passing pipe and used for conveying cooling water to the first spray head. The plastic granulating device has the effect of effectively reducing the temperature of the plastic granules in the granulating process.

Description

Technical Field

[0001] The present application relates to the field of granulator production technology, and in particular to a granulator with a water sprinkling function. Background Art

[0002] A pelletizer primarily processes raw materials such as coils, sheets, and recycled scrap into uniform pellets that are easy to meter and feed. This process typically involves melting, softening, extruding, and then pelletizing. Ensuring uniform pellet formation is crucial during pellet production.

[0003] Since the plastic pellets are still in a softened and high temperature state during the granulation process, problems such as adhesion and agglomeration are prone to occur between adjacent pellets. The agglomeration phenomenon will lead to a decrease in the uniformity of the pellets and affect the output quality of the pellets. Utility Model Content

[0004] In order to effectively reduce the temperature of plastic pellets during the pelletizing process and to improve the problem of adhesion and agglomeration between adjacent pellets, the present application provides a pelletizer with a water sprinkling function.

[0005] The present application provides a granulator with a water sprinkling function adopts the following technical solution:

[0006] A granulator with a water spraying function comprises a pelletizing box and a spraying mechanism, wherein a granulating chamber is provided inside the pelletizing box; the pelletizing box has a discharge port, and the discharge port is connected to the granulating chamber; the spraying mechanism comprises a first nozzle, a first water pipe and a first delivery pump, wherein the first nozzle is arranged in the granulating chamber, one end of the first water pipe is connected to the first nozzle, and the other end is connected to cooling water; the first delivery pump is arranged on the peripheral side of the first water pipe, and the first delivery pump is used to deliver cooling water to the first nozzle.

[0007] By adopting the above technical solution, when the granulator is working, the first delivery pump is started through the control system, and the first delivery pump delivers cooling water to the first nozzle. The cooling water is sprayed from the first nozzle to spray and cool the granular material, so as to cool the granular material during the formation process of the granular material, improve the problems of adhesion and agglomeration between adjacent granular materials, and thus ensure the discharge quality of the granular material.

[0008] Optionally, it also includes a pelletizing mechanism, which includes a drive motor, a rotating shaft and a plurality of pelletizing heads; the drive motor is fixed to the pelletizing box, and the rotating shaft is fixed to the output end of the drive motor; the plurality of pelletizing heads are all connected to the circumferential side of the rotating shaft, and the plurality of pelletizing heads are arranged at intervals along the circumference of the rotating shaft; the side wall of the rotating shaft is provided with a water outlet, and the first nozzle is installed in the water outlet.

[0009] By adopting the above technical solution, the first nozzle is arranged on the rotating shaft, and spray cooling is performed while the granular material is formed, thereby improving the timeliness and effect of spray cooling.

[0010] Optionally, a plurality of the first nozzles are provided, and the plurality of the first nozzles are arranged at equal intervals along the circumference of the rotating shaft.

[0011] By adopting the above technical solution, the uniformity of spray cooling is ensured.

[0012] Optionally, the pelletizing box is provided with a discharge pipe at the discharge port; the spraying mechanism also includes a second nozzle, a second water pipe and a second delivery pump; a plurality of second nozzles are provided and are all connected to the inner wall of the discharge pipe, and the plurality of second nozzles are all arranged tilted upward; one end of the second water pipe is connected to the second nozzle, and the other end is connected to cooling water; the second delivery pump is provided in the second water pipe, and the second delivery pump is used to deliver cooling water to the second nozzle; the plurality of second nozzles are divided into two groups: a water spray group and a spray group, and the water spray group is located above the spray group; the second nozzle in the water spray group is used to spray water flow, and the second nozzle in the spray group is used to spray water mist.

[0013] By adopting the above technical solution, on the one hand, the water flow and water mist sprayed by the second nozzle are used to spray and cool the granular materials leaving the discharge port of the granulator, thereby further improving the cooling effect; on the other hand, the water flow sprayed by the second nozzle in the water spray group is used to intercept the falling granular materials to a certain extent, thereby extending the retention time of the granular materials in the spraying range and improving the spray cooling effect.

[0014] Optionally, the inner wall of the discharge pipe is connected to a partition net, which is arranged around the central axis of the discharge pipe. Multiple second nozzles are located between the partition net and the inner wall of the discharge pipe, and the aperture of the partition net is smaller than the diameter of the granular material.

[0015] By adopting the above technical solution, the granular material is blocked by the partition net, which reduces the situation where the granular material hits the second nozzle during the falling process and affects the spraying effect of the second nozzle.

[0016] Optionally, a hot air mechanism is provided in the granulation chamber.

[0017] By adopting the above technical solution, when the granulator is stopped, the hot air mechanism is started to dry the granulation chamber, thereby reducing the risk of damage to various components in the granulation chamber and extending the service life of the granulation and pelletizing box.

[0018] Optionally, a plurality of arc-shaped pieces are obliquely provided on the circumferential side of the rotating shaft, and the plurality of arc-shaped pieces are arranged at intervals along the circumference of the rotating shaft, and the extending direction of the arc-shaped pieces is opposite to the rotation direction of the rotating shaft during pelletizing.

[0019] By adopting the above technical solution, the arc-shaped sheet is used to form a certain barrier for the melt with higher temperature, thereby reducing the risk of the melt clogging the water outlet; at the same time, since the extension direction of the arc-shaped sheet is opposite to the rotation direction of the rotating shaft, the presence of the arc-shaped sheet has little effect on the barrier of the water mist sprayed by the first nozzle.

[0020] Optionally, the arc-shaped piece is detachably connected to the rotating shaft.

[0021] By adopting the above technical solution, it is convenient to clean the rotating shaft.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting a spray mechanism in the granulation chamber, the granules are sprayed to cool down in the granulation chamber, thereby reducing the adhesion and agglomeration of adjacent granules due to excessive temperature;

[0024] 2. By placing the first nozzle on the rotating shaft, the timeliness and effect of spray cooling are improved;

[0025] 3. By setting a second nozzle at the position of the discharge pipe, the spray cooling effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram for showing the structure of the spray mechanism in Example 1.

[0028] Figure 3 It is a structural diagram of Example 2 of the present application.

[0029] Figure 4 It is a schematic diagram for showing the structure of the arc-shaped piece in Example 2.

[0030] Explanation of the accompanying symbols: 1. Pelletizing box; 11. Granulation chamber; 12. Discharge port; 13. Discharge pipe; 14. Partition; 15. Hot air mechanism; 2. Spraying mechanism; 21. First nozzle; 22. First water pipe; 23. First conveying pump; 24. Second nozzle; 25. Second water pipe; 26. Second conveying pump; 3. Pelletizing mechanism; 32. Rotating shaft; 321. Water outlet; 322. Mounting chamber; 323. Arc sheet; 334. Threaded sleeve; 335. Connecting hole; 33. Pelletizing cutter head; 4. Extrusion mechanism. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a granulator with a water sprinkling function.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2 The pelletizer with a water spraying function includes a pelletizing box 1, a spraying mechanism 2, a pelletizing mechanism 3, and an extruder 4. The pelletizing box 1 has a pelletizing chamber 11 disposed therein. The spraying mechanism 2 and the pelletizing mechanism 3 are both disposed within the pelletizing chamber 11. The extruder 4 is used to extrude the melt. The pelletizing box 1 has a discharge port 12, which communicates with the pelletizing chamber 11.

[0035] The spray mechanism 2 includes a first nozzle 21, a first water pipe 22, and a first delivery pump 23. The first nozzle 21 is positioned within the pelletizing chamber 11 and evenly sprays cooling water onto the surface of the pellets in a mist-like manner. The first water pipe 22 is positioned within the pelletizing box 1. One end of the first water pipe 22 is connected to the first nozzle 21, and the other end is used to connect to an external cooling water source. The first delivery pump 23 is positioned around the first water pipe 22 and is used to deliver the cooling water to the first nozzle 21.

[0036] The pelletizing mechanism 3 includes a drive motor, a rotating shaft 32, and multiple pelletizer heads 33. The drive motor is fixedly connected to the pelletizer box 1, and the rotating shaft 32 is fixedly connected to the output end of the drive motor. The multiple pelletizer heads 33 are connected to the circumference of the rotating shaft 32 and are arranged at intervals along the circumference of the rotating shaft 32.

[0037] Specifically, in this embodiment, a water outlet hole 321 is formed on the sidewall of the rotating shaft 32, and the first nozzle 21 is installed in the water outlet hole 321. The interior of the rotating shaft 32 is provided with a mounting cavity 322 for receiving the first water pipe 22. It is understood that the first water pipe 22 is a hose.

[0038] In this embodiment, a plurality of first nozzles 21 are provided, and the plurality of first nozzles 21 are arranged at equal intervals along the circumference of the rotation axis 32, and the plurality of first nozzles 21 are all connected to the first water pipe 22. Accordingly, a plurality of water outlet holes 321 are provided, and the plurality of water outlet holes 321 are arranged at intervals along the circumference of the rotation axis 32, and the plurality of water outlet holes 321 correspond one-to-one to the plurality of first nozzles 21.

[0039] The implementation principle of Example 1 is as follows: when the pelletizer is pelletizing, the drive motor and the first conveying pump 23 are started, and the drive motor drives the pelletizer head 33 to rotate through the rotating shaft 32. At the same time, cooling water is sprayed out from the water outlet 321 through the first nozzle 21 to spray and cool the pellets formed from the pelletizer head 33, so as to cool the pellets during the formation process, improve the problems of adhesion and agglomeration between adjacent pellets, and thus ensure the discharge quality of the pellets.

[0040] Example 2

[0041] Reference Figure 3 The difference between this embodiment and embodiment 1 is that a discharge pipe 13 is provided at the position of the discharge port 12 of the pelletizing box, and the discharge pipe 13 is extended along the height direction of the pelletizer.

[0042] In this embodiment, the spray mechanism 2 further includes a second nozzle 24, a second water pipe 25, and a second delivery pump 26. Multiple second nozzles 24 are provided, and each is connected to the inner wall of the discharge pipe 13. The multiple second nozzles 24 are evenly arranged along the wall of the discharge pipe 13 and are tilted upward. One end of the second water pipe 25 is connected to the second nozzle 24, and the other end is connected to an external cooling water supply. A second delivery pump 26 is provided in the second water pipe 25 and is used to deliver the cooling water to the second nozzle 24.

[0043] The multiple second nozzles 24 are divided into two groups: a water spray group and a spray group. The water spray group is located above the spray group. The second nozzles 24 in the water spray group spray water, while the second nozzles 24 in the spray group spray water mist. This design, on the one hand, utilizes the water flow and water mist sprayed by the second nozzles 24 to spray and cool the pellets leaving the granulator's discharge port 12, further improving the cooling effect. On the other hand, the water flow sprayed by the second nozzles 24 in the water spray group intercepts the falling pellets to a certain extent, prolonging the pellets' retention time within the spray range and improving the spray cooling effect.

[0044] Furthermore, a screen 14 is connected to the inner wall of the discharge pipe 13 and arranged around the central axis of the discharge pipe 13. Multiple second nozzles 24 are located between the screen 14 and the inner wall of the discharge pipe 13. The aperture of the screen 14 is smaller than the diameter of the pellets. Thus, the screen 14 blocks the pellets, reducing the chance that the pellets will collide with the second nozzles 24 during their fall, thereby affecting the spraying effect of the second nozzles 24.

[0045] Furthermore, a hot air mechanism 15 is provided in the granulation chamber 11. When the granulator is stopped, the hot air mechanism 15 is started to dry the granulation chamber 11, thereby reducing the risk of damage to the components in the granulation chamber 11 and extending the service life of the granulation and pelletizing box.

[0046] Reference Figure 4 Furthermore, multiple curved pieces 323 are obliquely arranged around the circumference of the rotating shaft 32. These pieces 323 are spaced apart along the circumference of the rotating shaft 32, and extend in the opposite direction of the rotation of the rotating shaft 32 during pelletizing. This design allows the curved pieces 323 to block the hot melt to a certain extent, reducing the risk of the melt clogging the water outlet 321. Furthermore, because the curved pieces 323 extend in the opposite direction of the rotation of the rotating shaft 32, their presence has little effect on blocking the water mist sprayed from the first nozzle 21. The curved pieces 323 are preferably hollow pieces or mesh pieces.

[0047] In this embodiment, the plurality of arc-shaped pieces 323 are all connected to the threaded sleeve 334 , which is threadedly connected to the rotating shaft 32 . A connecting hole 335 communicating with the water outlet 321 is formed through the wall of the threaded sleeve 334 .

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A granulator with a water spraying function, characterized in that: The invention comprises a pelletizing box (1) and a spraying mechanism (2), wherein a pelletizing chamber (11) is provided inside the pelletizing box (1); the pelletizing box (1) has a discharge port (12), and the discharge port (12) is communicated with the pelletizing chamber (11); the spraying mechanism (2) comprises a first nozzle (21), a first water pipe (22) and a first delivery pump (23), wherein the first nozzle (21) is arranged in the pelletizing chamber (11), one end of the first water pipe (22) is communicated with the first nozzle (21), and the other end is connected to cooling water; the first delivery pump (23) is arranged on the peripheral side of the first water pipe (22), and the first delivery pump (23) is used to deliver cooling water to the first nozzle (21).

2. The granulator with water sprinkling function according to claim 1, characterized in that: The invention also includes a pelletizing mechanism (3), wherein the pelletizing mechanism (3) includes a driving motor, a rotating shaft (32) and a plurality of pelletizing heads (33); the driving motor is fixedly connected to the pelletizing box (1), and the rotating shaft (32) is fixedly connected to the output end of the driving motor; the plurality of pelletizing heads (33) are all connected to the circumferential side of the rotating shaft (32), and the plurality of pelletizing heads (33) are arranged at intervals along the circumference of the rotating shaft (32); a water outlet (321) is provided on the side wall of the rotating shaft (32), and the first nozzle (21) is installed in the water outlet (321).

3. The granulator with water sprinkling function according to claim 2, characterized in that: A plurality of the first nozzles (21) are provided, and the plurality of the first nozzles (21) are arranged at equal intervals along the circumference of the rotating shaft (32).

4. The granulator with water sprinkling function according to claim 1, characterized in that: The pelletizing box (1) is provided with a discharge pipe (13) at the discharge port (12); the spray mechanism (2) further includes a second nozzle (24), a second water pipe (25) and a second delivery pump (26); a plurality of the second nozzles (24) are provided and are all connected to the inner wall of the discharge pipe (13), and the plurality of the second nozzles (24) are all arranged tilted upward; one end of the second water pipe (25) is connected to the second nozzle (24), and the other end is externally connected to cooling water; the second delivery pump (26) is provided on the second water pipe (25), and the second delivery pump (26) is used to deliver cooling water to the second nozzle (24); the plurality of the second nozzles (24) are divided into a water spray group and a spray group, and the water spray group is located above the spray group; the second nozzles (24) in the water spray group are used to spray water flow, and the second nozzles (24) in the spray group are used to spray water mist.

5. The granulator with water sprinkling function according to claim 4, characterized in that: The inner wall of the discharge pipe (13) is connected to a partition net (14), and the partition net (14) is arranged around the central axis of the discharge pipe (13). The plurality of second nozzles (24) are located between the partition net (14) and the inner wall of the discharge pipe (13), and the aperture of the partition net (14) is smaller than the diameter of the granular material.

6. The granulator with water spraying function according to claim 5, characterized in that: A hot air mechanism (15) is provided in the granulation chamber (11).

7. The granulator with water sprinkling function according to claim 2, characterized in that: A plurality of arc-shaped pieces (323) are obliquely arranged on the circumferential side of the rotating shaft (32), and the plurality of arc-shaped pieces (323) are arranged at intervals along the circumference of the rotating shaft (32), and the extending direction of the arc-shaped pieces (323) is opposite to the rotation direction of the rotating shaft (32) during pelletizing.

8. The granulator with water sprinkling function according to claim 7, characterized in that: The arc-shaped piece (323) is detachably connected to the rotating shaft (32).

Images