Plastic granulator

Abstract

The utility model relates to the field of pelletizing equipment, and provides a plastic pelletizer which comprises a machine table, a feeding roller, an elastic roller, a connecting piece and a first blowing piece. A pelletizing space is formed in the machine table; the feeding roller is movably connected with the inner wall of the pelletizing space and is externally connected with a driving source; the connecting piece is movably connected with the inner wall of the pelletizing space; the elastic roller is movably connected with the connecting piece, and the elastic roller is driven by the connecting piece to rotate along the inner wall of the pelletizing space and is close to the feeding roller; an air inlet cavity is formed in the connecting piece, a plurality of air outlet holes are formed in the surface of the connecting piece, an air inlet hole is formed in the end, close to the pelletizing space, of the connecting piece, the air inlet hole, the air inlet cavity and the air outlet holes are all in a communicated state, and the air outlet holes are aligned to the elastic roller. The elastic roller cooling device has the effect of cooling the elastic roller.

Description

Technical Field

[0001] This application relates to the field of pelletizing equipment, and in particular to a plastic pelletizer. Background Art

[0002] During the process of plastic granulation and forming, a pelletizer is required to insert the strip-shaped plastic raw material into the pelletizer. The pelletizer is internally provided with a cutting knife to cut the strip-shaped plastic raw material into appropriate sizes. Currently, plastic pelletizers are widely used in the plastic processing industry. However, existing pelletizers usually use rubber rollers in cooperation with conveying rollers to transfer plastic raw materials into the pelletizer. However, during the transfer, there is a large amount of friction, and the temperature inside the pelletizer is relatively high, which affects the service life of the rubber rollers. Summary of the Invention

[0003] To improve the above problems, this application provides a plastic pelletizer.

[0004] A plastic pelletizer provided by this application adopts the following technical solutions:

[0005] A plastic pelletizer includes a machine table, a feeding roller, an elastic roller, a connecting piece, and a first blowing member; a pelletizing space is opened inside the machine table; the feeding roller is movably connected to the inner wall of the pelletizing space and is externally connected to a driving source; the connecting piece is movably connected to the inner wall of the pelletizing space; the elastic roller is movably connected to the connecting piece, and the elastic roller is driven by the connecting piece to rotate along the inner wall of the pelletizing space and be close to the feeding roller; an air inlet cavity is opened inside the connecting piece, and a plurality of air outlet holes are opened on the surface. An air inlet hole is opened at one end close to the pelletizing space. The air inlet hole, the air inlet cavity, and the air outlet holes are all in a communicating state, and the air outlet holes are oriented towards the elastic roller; a blowing hole is opened on the inner wall of the pelletizing space. The first blowing member is installed on the outer wall of the machine table and is communicated with the blowing hole, and the first blowing member provides an air flow supply; the blowing hole is docked with the air inlet hole.

[0006] By adopting the above technical solutions, the plastic raw material enters the pelletizing space between the feeding roller and the elastic roller. The feeding roller rotates and cooperates with the elastic roller to convey the plastic raw material. During the conveying process of the feeding roller and the elastic roller, the air inlet hole is docked with the blowing hole. The first blowing member drives the air flow into the blowing hole. The blowing hole penetrates through the air inlet hole and enters the air inlet cavity, and the air inlet cavity distributes the air to each air outlet hole. The air outlet holes spray gas towards the elastic roller, and the air flow accelerates the air flow velocity around the elastic roller, thereby achieving the effect of cooling and temperature reduction.

[0007] Optionally, an insertion groove is opened on the inner wall of the pelletizing space, and the connecting piece is inserted into the insertion groove.

[0008] By adopting the above technical solution, the elastic roller can be detached from the granulation space along the insertion groove through the connecting member for replacement or maintenance.

[0009] Optionally, the inner groove wall of the insertion groove is inclined.

[0010] By adopting the above technical solution, when the connecting member vibrates or is dragged, it will be stuck in the vertical direction, making the connecting frame unable to vibrate or be dragged in the vertical direction and can only move along the inclined groove wall, ensuring the stability of the installation of the connecting member.

[0011] Optionally, a positioning portion is further provided at the inner wall of the granulation space. The positioning portion is located below the air blowing hole and abuts against the connecting member.

[0012] By adopting the above technical solution, when the connecting member rotates around the movable connection point on the inner wall surface of the granulation space, the connecting member can be stuck by the positioning portion, making the connecting member unable to continue rotating downward, ensuring the accurate positions of the air inlet hole and the air blowing hole and enabling them to be stably docked.

[0013] Optionally, the connecting member further includes a sealing portion; the sealing portion is located at the air inlet hole and contacts the inner wall of the granulation space.

[0014] By adopting the above technical solution, when the air inlet hole is docked with the air blowing hole, the sealing portion is pressed against the inner wall surface of the granulation space at the air blowing hole, thereby improving the sealing effect and avoiding air leakage of the air flow blown out of the air blowing hole.

[0015] Optionally, an external thread is provided at the air inlet hole, and an internal thread is provided on the inner wall of the sealing portion, so that the sealing portion is screwed to the connecting member through the external thread.

[0016] By adopting the above technical solution, the sealing portion rotates along the external thread of the external connecting member and moves towards the inner wall surface of the granulation space, that is, moves towards the air blowing hole direction until it tightly adheres to the inner wall surface of the granulation space around the air blowing hole, thereby achieving the sealing effect.

[0017] Optionally, a closing cover is movably connected to the top outlet of the granulation space.

[0018] By adopting the above technical solution, the closing cover is used to close the granulation space, enclosing the granulation environment in the granulation space and preventing the plastic particles cut out from splashing and escaping from the granulation space during the granulation process.

[0019] Optionally, a second blowing member is provided on one side of the closing cover away from the granulation space, and the blowing end of the second blowing member penetrates through the closing cover and faces the elastic roller.

[0020] By adopting the above technical solution, after the closing cover closes the granulation space along the movable connection point, the second air blowing member blows air to the elastic roller in the vertical direction to achieve the effect of cooling, and cooperating with the air blowing effect of the first air blowing member, the cooling efficiency can be further improved.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The plastic raw material enters the granulation space between the feeding roller and the elastic roller. The feeding roller rotates and cooperates with the elastic roller to convey the plastic raw material. During the conveying process of the feeding roller and the elastic roller, the air inlet hole is docked with the air blowing hole. The first air blowing member drives the air flow into the air blowing hole. The air blowing hole penetrates through the air inlet hole into the air inlet cavity, and the air inlet cavity distributes the air to each air outlet hole. The air outlet hole aims at the elastic roller and sprays out the gas. The air flow accelerates the air flow velocity around the elastic roller, thereby achieving the effect of cooling and temperature reduction;

[0023] 2. When the connecting member vibrates or is dragged, the vertical direction will be stuck, so that the connecting frame cannot vibrate or be dragged in the vertical direction, and can only move along the inclined groove wall, ensuring the stability of the installation of the connecting member;

[0024] 3. When the connecting member rotates around the movable connection point on the inner wall surface of the granulation space, the connecting member can be stuck by the positioning portion, so that the connecting member cannot continue to rotate and rotate downward, ensuring the accurate positions of the air inlet hole and the air blowing hole, and enabling the two to be stably docked;

[0025] 4. The sealing portion rotates along the external thread of the external connecting member and moves towards the inner wall surface of the granulation space, that is, moves towards the air blowing hole direction until it tightly adheres to the inner wall surface of the granulation space around the air blowing hole, thereby achieving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the first exploded structural schematic diagram of the granulator in an embodiment of the present application;

[0027] Figure 2 is the second exploded structural schematic diagram of the granulator in some embodiments of the present application;

[0028] Figure 3 is the first three-dimensional structural schematic diagram of the granulator in some embodiments of the present application;

[0029] Figure 4 is the three-dimensional structural schematic diagram of the connecting member in some embodiments of the present application;

[0030] Figure 5 is the second three-dimensional structural schematic diagram of the granulator in some embodiments of the present application;

[0031] The reference numerals in the drawings are as follows: 1, machine; 11, pelletizing space; 12, air blowing holes; 13, insertion grooves; 14, positioning parts; 2, feeding rollers; 3, elastic rollers; 4, connecting parts; 41, air inlet holes; 42, air outlet holes; 43, sealing parts; 5, first air blowing member; 6, closing cover; 7, second air blowing member. Detailed implementation manners

[0032] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementation manners. Various details in the present application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0033] The following takes the drawings as a reference and details the embodiments of the present application so that those skilled in the technical field to which the present application belongs can easily implement it. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0034] In the description of the present application, the reference terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented by combining the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0035] In addition, the terms "first" and "second" are only used for indication purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0036] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection", but also the case of "indirect connection" with other elements placed therebetween. In addition, when it is said that a certain device "includes" a certain constituent element, unless there is a particularly contrary record, it does not exclude other constituent elements, but means that other constituent elements can also be included.

[0037] The following combines the attachedFigure 1 - Attached Figure 5 , a further detailed description of the present application will be given below.

[0038] An embodiment of the present application discloses a plastic granulator.

[0039] A plastic granulator, as shown in reference to Figure 1 and Figure 2 , includes a machine table 1, a feeding roller 2, an elastic roller 3, a connecting member 4, and a first blowing member 5. A granulation space 11 is provided inside the machine table 1. The machine table 1 is also provided with a feeding port and a discharging port. The granulation space 11 communicates with the feeding port and the discharging port. The feeding port can extend plastic raw materials into the granulation space 11. After granulation is completed, it is discharged and collected from the discharging port. A rotating cutting knife is also provided inside the machine table 1, and rotating cutting is performed using the rotating cutting knife.

[0040] The feeding roller 2 is movably connected to the inner wall of the granulation space 11 and is externally connected to a driving source. The feeding roller 2 rotates along the inner wall surface of the granulation space 11 under the drive of the externally connected driving source. The feeding roller 2 is used to provide a driving force to convey plastic raw materials into the granulation space 11 and perform granulation through the built-in rotating cutting knife.

[0041] The connecting member 4 is movably connected to the inner wall of the granulation space 11. Specifically, the movable connection method can be to open a pivot hole on the inner wall surface of the granulation space 11. The connecting member 4 is located in the pivot hole and rotates along the pivot hole. The connecting member 4 can adopt a connecting frame, and the connecting frame is a multi-rod bracket.

[0042] The elastic roller 3 is movably connected to the connecting member 4, that is, the elastic roller 3 can rotate along the surface of the connecting member 4, and through the connecting member 4, the elastic roller 3 rotates on the inner wall of the granulation space 11 and is close to the feeding roller 2. The elastic roller 3 is made of rubber or plastic material and is used to increase friction. When the elastic roller 3 rotates along the inner wall of the granulation space 11 to be close to the feeding roller 2 through the connecting member 4, the plastic raw materials penetrate and insert into the granulation space 11 between the elastic roller 3 and the feeding roller 2. Then, with the rotation of the feeding roller 2, the plastic raw materials are pulled into the granulation space 11. Synchronously, the elastic surface of the elastic roller 3 provides friction and elasticity, enabling the plastic raw materials to fully contact the feeding roller 2 for conveying. In the figure, it is an exploded view, and the connecting member and the elastic roller are in a separated state from the granulation space. The combined state is shown in reference to Figure 3 as shown.

[0043] Among them, the elastic roller 3 can open the overall space by rotating along the inner wall surface of the granulation space 11 through the connecting member 4.

[0044] An air inlet cavity is provided inside the connecting member 4, and a number of air outlet holes 42 are provided on the surface. An air inlet hole 41 is provided at one end close to the pelletizing space 11. The air inlet hole 41, the air inlet cavity, and the air outlet holes 42 are all in a communicating state. The air outlet holes 42 are oriented towards the elastic roller 3. The connecting member 4 includes a cylindrical structure, such that the inner wall of the cylindrical structure is the air inlet cavity. The air inlet hole 41 at one end provides air inlet, and the air outlet holes 42 provide air outlet. The positions of the air outlet holes 42 are aligned with the elastic roller 3, such that the discharged air flow can cool the elastic roller 3.

[0045] Blow holes 12 are provided at the inner wall of the pelletizing space 11. The first blowing member 5 is installed on the outer wall of the machine table 1 and is in communication with the blow holes 12. The first blowing member 5 provides an air flow supply. When the connecting member 4 rotates around the movable connection point on the inner wall surface of the pelletizing space 11, such that the air inlet hole 41 is docked with the blow hole 12, the first blowing member 5 can provide an air flow. The air flow enters the air inlet cavity through the blow hole 12 and the air inlet hole 41, and then is discharged from the air inlet cavity through the air outlet holes 42. The discharged gas is aligned with the elastic roller 3 to achieve cooling. Among them, the first blowing member 5 can adopt a first air pump.

[0046] Specifically, the plastic raw material enters the pelletizing space 11 between the feeding roller 2 and the elastic roller 3. The feeding roller 2 rotates in cooperation with the elastic roller 3 to convey the plastic raw material. During the conveying process of the feeding roller 2 and the elastic roller 3, the air inlet hole 41 is docked with the blow hole 12. The first blowing member 5 drives the air flow into the blow hole 12. The blow hole 12 penetrates through the air inlet hole 41 and enters the air inlet cavity, and the air is distributed from the air inlet cavity to each air outlet hole 42. The air outlet holes 42 eject gas towards the elastic roller 3, and the air flow accelerates the air flow velocity around the elastic roller 3, thereby achieving the effect of cooling and temperature reduction.

[0047] Among them, in case of a failure, the connecting member 4 can be used to drive the elastic roller 3 to rotate, such that the feeding roller 2 and the elastic roller 3 are separated for maintenance.

[0048] In some embodiments, referring to Figure 2 As shown, insertion slots 13 are provided at the inner wall of the pelletizing space 11. The connecting member 4 is inserted into the insertion slots 13, such that the connecting member 4 can drive the elastic roller 3 to be pulled out from the pelletizing space 11 along the insertion slots 13, separating the elastic roller 3 from the pelletizing space 11, thereby facilitating the replacement or maintenance of the elastic roller 3.

[0049] Among them, the inner groove wall of the insertion slot 13 is inclined. The inclined insertion slot 13 causes the connecting member 4 to move along the inclined groove wall when disengaging. During vibration or dragging, the vertical direction will be stuck, such that the connecting frame cannot vibrate or drag in the vertical direction and can only move along the inclined groove wall, ensuring the stability of the installation of the connecting member 4.

[0050] In some embodiments, referring to Figure 2As shown, a positioning portion 14 is further provided at the inner wall of the pelletizing space 11. The positioning portion 14 is located below the air blowing hole 12 and abuts against the connecting member 4. The positioning portion 14 can adopt a positioning block, and an arc-shaped groove is provided on the positioning block to facilitate the abutment of the connecting member 4.

[0051] The positioning block is located below the air blowing hole 12, so that when the connecting member 4 rotates around the movable connection point on the inner wall surface of the pelletizing space 11, the connecting member 4 can be caught by the positioning portion 14, preventing the connecting member 4 from continuing to rotate downward, ensuring the accurate positions of the air inlet hole 41 and the air blowing hole 12, and enabling stable docking between the two.

[0052] In some embodiments, referring to Figure 4 As shown, the connecting member 4 further includes a sealing portion 43. The sealing portion 43 is located at the air inlet hole 41 and contacts the inner wall of the pelletizing space 11. The sealing portion 43 can adopt a sealing ring or a sealing cover. The sealing portion 43 can increase the sealing degree at the air inlet hole 41. When the air inlet hole 41 is docked with the air blowing hole 12, the sealing portion 43 is pressed against the inner wall surface of the pelletizing space 11 at the air blowing hole 12, thereby improving the sealing effect and preventing air leakage of the air flow blown out from the air blowing hole 12.

[0053] Among them, the inner wall surface of the pelletizing space 11 at the air blowing hole 12 can be an inclined surface, and the end of the sealing portion 43 close to the pelletizing space 11 can also be an inclined surface, so that when the connecting member 4 rotates downward, the inclined surface of the sealing portion 43 gradually presses against the inclined surface of the pelletizing space 11, thereby achieving stable sealing.

[0054] In some embodiments, external threads are provided at the air inlet hole 41 of the connecting member 4, and internal threads are provided on the inner wall of the sealing portion 43, so that the sealing portion 43 is screwed to the connecting member 4 through the external threads. When the connecting member 4 rotates around the movable connection point on the inner wall surface of the pelletizing space 11, the air inlet hole 41 is docked with the air blowing hole 12. Subsequently, the sealing portion 43 is rotated. The sealing portion 43 rotates along the external threads of the external connecting member 4 and moves towards the inner wall surface of the pelletizing space 11, that is, towards the air blowing hole 12, until it tightly adheres to the inner wall surface of the pelletizing space 11 around the air blowing hole 12, thereby achieving the sealing effect.

[0055] When it is necessary to rotate the connecting member 4, rotate the sealing portion 43 in the opposite direction so that the sealing portion 43 is separated from the inner wall surface of the pelletizing space 11, and the connecting member 4 can be driven to rotate away from the elastic roller 3.

[0056] In some embodiments, referring to Figure 1 or Figure 5As shown in the figure, a closing cover 6 is movably connected to the top outlet of the pelletizing space 11. The closing cover 6 is used to close the pelletizing space 11, enclosing the pelletizing environment inside the pelletizing space 11 to prevent the plastic pellets cut out from splashing and escaping from the pelletizing space 11 during the pelletizing process. At the same time, the movable connection method can be a hinge connection. The closing cover 6 is connected to the machine table 1 by a hinge bracket, enabling the closing cover 6 to be opened or closed at will for the pelletizing space 11, facilitating the opening of the pelletizing space 11 for maintenance and cleaning.

[0057] Further, referring to Figure 5 As shown in the figure, a second blowing member 7 is provided on the side of the closing cover 6 away from the pelletizing space 11, and the blowing end of the second blowing member 7 penetrates through the closing cover 6 and faces the elastic roller 3. The second blowing member 7 can adopt a second air pump, and the second air pump provides a blowing effect in another direction.

[0058] After the closing cover 6 closes the pelletizing space 11 along the movable connection point, the second blowing member 7 blows air vertically on the elastic roller 3 to achieve the effect of cooling and temperature reduction. Cooperating with the blowing effect of the first blowing member 5, the cooling efficiency can be further improved.

[0059] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A plastic granulator, characterized in that, It includes a machine table (1), a feeding roller (2), an elastic roller (3), a connecting piece (4) and a first blowing piece (5); a granulation space (11) is formed inside the machine table (1); The feeding roller (2) is movably connected to the inner wall of the granulation space (11) and is externally connected to a driving source; the connecting piece (4) is a connecting frame, and the connecting frame is a multi-rod bracket; the connecting piece (4) is movably connected to the inner wall of the granulation space (11); the elastic roller (3) is movably connected to the connecting piece (4), and the elastic roller (3) is driven by the connecting piece (4) to rotate along the inner wall of the granulation space (11) and be close to the feeding roller (2); an air inlet cavity is formed inside the connecting piece (4), and a plurality of air outlet holes (42) are formed on the surface, an air inlet hole (41) is formed at one end close to the granulation space (11), the air inlet hole (41), the air inlet cavity and the air outlet holes (42) are in a communicating state, and the air outlet holes (42) are oriented towards the elastic roller (3); a blowing hole (12) is formed on the inner wall of the granulation space (11), the first blowing piece (5) is installed on the outer wall of the machine table (1) and is communicated with the blowing hole (12), and the first blowing piece (5) provides air flow supply; The blowing hole (12) is docked with the air inlet hole (41).

2. The plastic pelletizing machine according to claim 1, wherein, An insertion slot (13) is formed on the inner wall of the granulation space (11), and the connecting piece (4) is inserted into the insertion slot (13).

3. A plastic granulator according to claim 2, characterized in that, The inner groove wall of the insertion slot (13) is inclined.

4. A plastic granulator according to claim 1, characterized in that A positioning portion (14) is further provided on the inner wall of the granulation space (11), the positioning portion (14) is located below the blowing hole (12) and abuts against the connecting piece (4).

5. The plastic granulator according to claim 4, wherein The connecting piece (4) further includes a sealing portion (43); the sealing portion (43) is located at the air inlet hole (41) and contacts the inner wall of the granulation space (11).

6. A plastic granulator according to claim 5, characterized in that, External threads are formed at the air inlet hole (41), and internal threads are formed on the inner wall of the sealing portion (43), so that the sealing portion (43) is screwed to the connecting piece (4) through the external threads.

7. A plastic granulator according to claim 1, characterized in that, A closing cover (6) is movably connected to the top outlet of the granulation space (11).

8. A plastic granulator according to claim 7, characterized in that, A second blowing piece (7) is arranged on one side of the closing cover (6) away from the granulation space (11), and the blowing end of the second blowing piece (7) penetrates through the closing cover (6) and faces the elastic roller (3).

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