A double roller granulator

Abstract

The present invention relates to a double-roll granulator, which comprises a first roller, a second roller and a power mechanism, wherein the first cylinder in the first roller is fixed to the first rotating shaft and can rotate around the first rotating shaft, the outer surface of the first cylinder is provided with a plurality of first grooves, the first elastic layer is attached to the outer surface of the first cylinder and covers the first cylinder, the first pressing layer is attached to the outer surface of the first elastic layer and covers the first elastic layer, the outer surface of the first pressing layer is provided with a plurality of first through holes, when the first elastic layer is pressed to fit the surface of the first groove, the first through hole is connected with the first groove to form a first half cavity; the second rotating shaft in the second roller is arranged parallel to the first rotating shaft; the power mechanism is used to drive the first roller and the second roller to rotate, so that the first half cavity is connected with the second half cavity and forms a granulation cavity. The double-roll granulator provided by the present invention can also form and discharge materials well when processing materials with a low degree of dryness, and has a good processing effect.

Description

Technical Field

[0001] The invention relates to the technical field of material processing equipment, in particular to a double-roller granulator. Background Art

[0002] A granulator is a molding machine that can make materials into specific shapes. It is widely used in the material processing and molding process in the fields of chemical, petrochemical, pharmaceutical, food, building materials, mining, environmental protection, printing and dyeing. The granulator in the prior art generally has grooves on the surfaces of two opposite rollers. The grooves on the surfaces of the two rollers correspond to each other and form a granulation space between the two grooves. When the material passes between the two rollers, it is extruded and molded in the granulation space to complete the granulation process. However, when processing materials with a low degree of dryness, due to the high water content of the material, the material is relatively loose as a whole, and it will adhere to the inner wall of the groove and cannot be discharged. The molding effect is also not ideal, and qualified products cannot be processed. Summary of the invention

[0003] In view of this, it is necessary to provide a double-roll granulator to solve the technical problem that the granulator in the prior art cannot discharge the material and has an unsatisfactory molding effect when processing the material with a low degree of dryness.

[0004] The present invention provides a double-roll granulator, comprising:

[0005] The first roller comprises a first rotating shaft, a first cylinder, a first elastic layer and a first pressing layer, the first cylinder is fixed to the first rotating shaft and can rotate around the first rotating shaft, a plurality of first grooves are provided on the outer surface of the first cylinder, the first elastic layer is attached to the outer surface of the first cylinder and covers the first cylinder, the first pressing layer is attached to the outer surface of the first elastic layer and covers the first elastic layer, a plurality of first through holes are provided on the outer surface of the first pressing layer, the first through holes are arranged in one-to-one correspondence with the first grooves, and when the first elastic layer is pressed to fit with the surface of the first grooves, the first through holes are connected with the first grooves to form a first half cavity;

[0006] The second roller comprises a second rotating shaft, a second cylinder, a second elastic layer and a second pressing layer, the second rotating shaft is arranged in parallel with the first rotating shaft, the second cylinder is fixed to the second rotating shaft and can rotate around the second rotating shaft to form a granulation space between the second roller and the first roller, a plurality of second grooves are provided on the outer surface of the second cylinder, the second elastic layer is attached to the outer surface of the second cylinder and covers the second cylinder, the second pressing layer is attached to the outer surface of the second elastic layer and covers the second elastic layer, a plurality of second through holes are provided on the outer surface of the second pressing layer, the second through holes are arranged in a one-to-one correspondence with the second grooves, when the second elastic layer is pressed to fit with the surface of the second grooves, the second through holes are connected with the second grooves to form a second half cavity, and the second half cavity is arranged in a one-to-one correspondence with the first half cavity;

[0007] The power mechanism is used to drive the first roller and the second roller to rotate so that the first half cavity and the second half cavity in the granulation space are connected to form a granulation cavity.

[0008] In some embodiments, the first elastic layer is a rubber layer or a silicone layer, and the second elastic layer is a rubber layer or a silicone layer.

[0009] In some of the embodiments, the first through holes are arranged in a ring array on the outer surface of the first laminated layer, and the second through holes are arranged in a ring array on the outer surface of the second laminated layer.

[0010] In some embodiments, the power mechanism includes a motor, and an output shaft of the motor is connected to the first rotating shaft and / or the second rotating shaft to drive the first roller and the second roller to rotate.

[0011] In some embodiments, the power mechanism also includes a first gear and a second gear, the first gear is configured to engage with the second gear for transmission, the first gear is connected to one end of the first rotating shaft, the second gear is connected to one end of the second rotating shaft, and the output shaft of the motor is connected to the other end of the first rotating shaft or the second rotating shaft.

[0012] In some of the embodiments, the first gear is externally meshed with the second gear so that the first roller and the second roller rotate in opposite directions.

[0013] In some embodiments, the pelletizing cavity is spherical.

[0014] In some embodiments, it also includes:

[0015] The base is provided with a first accommodating cavity for partially accommodating the first roller and the second roller, and shaft seats for matching and installing the first rotating shaft and the second rotating shaft are respectively arranged on both sides of the base.

[0016] In some embodiments, it also includes:

[0017] The machine cover has a second accommodating chamber inside for partially accommodating the first roller and the second roller. One end of the machine cover is connected to the base so that the second accommodating chamber is connected to the first accommodating chamber. The other end of the machine cover has a feeding port so that the material fed through the feeding port can enter the granulation space.

[0018] In some of the embodiments, a plurality of guide plates are provided on the hood at the feeding port, one end of each guide plate is connected to the hood, the other end of each guide plate deviates away from the center of the feeding port, and each guide plate is connected end to end in sequence.

[0019] The double-roll granulator provided by the present invention adds a first elastic layer and a first pressing layer to the first roller, and the second roller has a similar structure to the first roller, and a granulation space is formed between the second roller and the first roller. In this way, when the double-roll granulator is in operation, a part of the material in the granulation space enters the first through hole and squeezes the first elastic layer there, so that the first elastic layer is pressed to fit the surface of the first groove. In this way, the first through hole and the first groove are connected to form a first half cavity, and this part of the material is contained in the first half cavity, and another part of the material enters the second through hole and squeezes the second elastic layer there. The second elastic layer is pressed to fit the surface of the second groove, so that the second through hole and the second groove are connected to form a second half cavity, and this part of the material is contained in the second half cavity. The material is formed in the granulation cavity formed after the first half cavity and the second half cavity are connected. With the rotation of the first cylinder and the second cylinder, the pressure on the material is reduced, and the first elastic layer and the second elastic layer gradually recover their deformation. With the help of the elastic force generated by their recovery of deformation, the material formed in the granulation cavity can be ejected. When processing materials with a lower degree of dryness, it can also be well shaped and discharged, and the processing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the double-roll granulator in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the roller granulator after the machine cover is hidden in the embodiment of the present invention;

[0022] Figure 3 An exploded view of a hood, a first roller, a second roller and a base of a double-roll granulator in an embodiment of the present invention;

[0023] Figure 4 It is a full cross-sectional schematic diagram of the first roller of the double-roll granulator in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A local enlarged schematic diagram in FIG.

[0025] Figure 6 It is a schematic diagram of the full cross-section structure of the granulation space of the double-roll granulator in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0027] See also Figures 1 to 6An embodiment of the present invention provides a double-roll granulator 10 , which includes a first roller 100 , a second roller 200 and a power mechanism 300 .

[0028] The first roller 100 includes a first rotating shaft 110, a first cylinder 120, a first elastic layer 130 and a first pressing layer 140. The first cylinder 120 is fixed to the first rotating shaft 110 and can rotate around the first rotating shaft 110. A plurality of first grooves 121 are provided on the outer surface of the first cylinder 120. The first elastic layer 130 is attached to the outer surface of the first cylinder 120 and covers the first cylinder 120. The first pressing layer 140 is attached to the outer surface of the first elastic layer 130 and covers the first elastic layer 130. A plurality of first through holes 141 are provided on the outer surface of the first pressing layer 140. The first through holes 141 are arranged in a one-to-one correspondence with the first grooves 121. When the first elastic layer 130 is pressed to fit the surface of the first grooves 121, the first through holes 141 are connected with the first grooves 121 to form a first half cavity 150. The first elastic layer 130 is elastic. When the material partially enters the first through hole 141 and contacts the first elastic layer 130 under the extrusion effect during the granulation process, this part of the material will continue to squeeze the first elastic layer 130, so that the first elastic layer 130 is pressed to fit the surface of the first groove 121. In this way, the first through hole 141 and the first groove 121 are connected to form a first half cavity 150, and this part of the material is contained in the first half cavity 150. As the first roller 100 rotates, the extrusion force on the material decreases, and the first elastic layer 130 gradually recovers its deformation to the position between the first pressing layer 140 and the first cylinder 120. With the elastic force generated by its recovery of deformation, this part of the material can be ejected from the first half cavity 150. There are many choices for the material of the first elastic layer 130. For example, the first elastic layer 130 can be a rubber layer or a silicone layer. Rubber refers to a highly elastic polymer material with reversible deformation, which is elastic at room temperature, can produce a large deformation under a very small external force, and can return to its original state after the external force is removed. Rubber is divided into natural rubber and synthetic rubber. Natural rubber is processed by extracting colloid from plants such as rubber trees and rubber grass. Synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in various aspects of industry or life. The shape and size of the first through hole 141 and the first groove 121 are determined according to the shape and size of the material to be processed.

[0029] The structure of the second roller 200 is similar to that of the first roller 100. Specifically, the second roller 200 includes a second rotating shaft 210, a second cylinder 220, a second elastic layer 230 and a second laminating layer 240. The second rotating shaft 210 is arranged parallel to the first rotating shaft 110. The second cylinder 220 is fixed to the second rotating shaft 210 and can rotate around the second rotating shaft 210 to form a granulation space 400 between the second roller 200 and the first roller 100. The outer surface of the second cylinder 220 is provided with a plurality of second grooves 221. The second elastic layer 230 is attached to the second roller 200. The outer surface of the second cylinder 220 covers the second cylinder 220, the second pressing layer 240 is attached to the outer surface of the second elastic layer 230 and covers the second elastic layer 230, and the outer surface of the second pressing layer 240 is evenly provided with a plurality of second through holes 241, and the second through holes 241 are arranged in a one-to-one correspondence with the second grooves 221. When the second elastic layer 230 is pressed to fit the surface of the second groove 221, the second through holes 241 are connected with the second groove 221 to form a second half cavity 250, and the second half cavity 250 is arranged in a one-to-one correspondence with the first half cavity 150. The second elastic layer 230 is elastic. When the material partially enters the second through hole 241 and contacts the second elastic layer 230 under the extrusion during the granulation process, this part of the material will continue to squeeze the second elastic layer 230, so that the second elastic layer 230 is pressed to fit the surface of the second groove 221. In this way, the second through hole 241 and the second groove 221 are connected to form a second half cavity 250, and this part of the material is contained in the second half cavity 250. As the second roller 200 rotates, the extrusion force on the material decreases, and the second elastic layer 230 gradually recovers its deformation to the position between the second pressing layer 240 and the second cylinder 220. With the elastic force generated by its recovery of deformation, this part of the material can be ejected from the second half cavity 250. There are many choices for the material of the second elastic layer 230. For example, the second elastic layer 230 can be a rubber layer or a silicone layer. The shapes and sizes of the first through hole 141 , the first groove 121 and the granulation cavity 500 finally formed are determined according to the shape and size of the material to be processed. For example, the granulation cavity 500 may be spherical.

[0030] The power mechanism 300 is used to drive the first roller 100 and the second roller 200 to rotate, so that the first half chamber 150 and the second half chamber 250 in the granulation space 400 are connected to form a granulation chamber 500. The power mechanism 300 can be a motor, an internal combustion engine, etc. commonly used in the art.

[0031] The double-roll granulator 10 provided by the embodiment of the present invention is provided with a first elastic layer 130 and a first pressing layer 140 in the first roller 100, and the second roller 200 has a similar structure to the first roller 100, and a granulation space 400 is formed between the second roller 200 and the first roller 100. In this way, when the double-roll granulator 10 is in operation, a part of the material in the granulation space 400 enters the first through hole 141 and squeezes the first elastic layer 130 there, so that the first elastic layer 130 is pressed to fit the surface of the first groove 121. In this way, the first through hole 141 and the first groove 121 are connected to form a first half cavity 150, and this part of the material is contained in the first half cavity 150, and the other part of the material enters the second through hole 241 and squeezes The second elastic layer 230 is pressed here so that the second elastic layer 230 is pressed to fit with the surface of the second groove 221, so that the second through hole 241 and the second groove 221 are connected to form a second half cavity 250, and this part of the material is contained in the second half cavity 250. The material is formed in the granulation cavity 500 formed after the first half cavity 150 and the second half cavity 250 are connected. With the rotation of the first cylinder 120 and the second cylinder 220, the pressure on the material is reduced, and the first elastic layer 130 and the second elastic layer 230 gradually recover their deformation. With the help of the elastic force generated by their recovery of deformation, the material formed in the granulation cavity 500 can be ejected. When processing materials with a lower degree of dryness, they can also be well formed and discharged, and the processing effect is good.

[0032] In the working process of the double-roll granulator 10, in order to enable it to discharge materials more continuously and evenly, in some embodiments, the first through holes 141 are arranged in a circular array on the outer surface of the first lamination layer 140, and the second through holes 241 are arranged in a circular array on the outer surface of the second lamination layer 240. In this way, as the first roller 100 and the second roller 200 rotate, the first through holes 141 and the second through holes 241 arranged in a circular array continuously enter the granulation space 400 formed between the first roller 100 and the second roller 200, and the double-roll granulator 10 can also continuously and evenly process the molding material and discharge the material continuously, with high processing efficiency.

[0033] In some embodiments, the power mechanism 300 includes a motor 310, and the output shaft of the motor 310 is connected to the first rotating shaft 110 and / or the second rotating shaft 210 to drive the first roller 100 and the second roller 200 to rotate. The motor 310 can be a single-output motor 310 or a dual-output motor 310. When the motor 310 is a single-output motor 310, the output shaft of the motor 310 is connected to the first rotating shaft 110 or the second rotating shaft 210, and a transmission member is used to connect the first rotating shaft 110 and the second rotating shaft 210 to achieve relative rotation of the first roller 100 and the second roller 200. Two motors 310 can also be used to connect the first rotating shaft 110 and the second rotating shaft 210 respectively to achieve relative rotation of the first roller 100 and the second roller 200. When the motor 310 is a dual-output motor 310, the two output shafts of the motor 310 are respectively connected to the first rotating shaft 110 and the second rotating shaft 210 to realize the relative rotation of the first roller 100 and the second roller 200. If necessary, a reducer can be installed between the motor 310 and the first rotating shaft 110 and the second rotating shaft 210 to play a deceleration transmission role of reducing the rotation speed and increasing the torque.

[0034] As described above, when the motor 310 adopts a single output motor 310, the output shaft of the motor 310 is connected to the first rotating shaft 110 or the second rotating shaft 210, and the power mechanism 300 further includes a first gear 320 and a second gear 330 as transmission members, the first gear 320 is configured to be meshed and transmitted with the second gear 330, the first gear 320 is connected to one end of the first rotating shaft 110, the second gear 330 is connected to one end of the second rotating shaft 210, and the output shaft of the motor 310 is connected to the other end of the first rotating shaft 110 or the second rotating shaft 210. In this way, the motor 310 drives the first roller 100 or the second roller 200 to rotate through the output shaft, and the first roller 100 or the second roller 200 drives the second roller 200 or the first roller 100 to rotate through the transmission of the first gear 320 and the second gear 330, so as to realize the relative rotation of the first roller 100 and the second roller 200. Specifically, the first gear 320 is externally meshed with the second gear 330 so that the first roller 100 and the second roller 200 rotate in opposite directions. In this way, the first roller 100 and the second roller 200 can extrude and shape the material in the granulation space 400 from two different directions.

[0035] In some embodiments, the double-roll granulator 10 further includes a base 600, on which a first accommodating cavity 610 for partially accommodating the first roller 100 and the second roller 200 is provided, and shaft seats 620 for cooperating with the first rotating shaft 110 and the second rotating shaft 210 are respectively provided on both sides of the base 600. The base 600 can fix and connect the entire double-roll granulator 10, and also facilitate the handling and movement of the double-roll granulator 10.

[0036] During the operation of the double-roll granulator 10, in order to prevent external impurities from entering the material and affecting the quality of the final product, and to prevent material splashing and affecting the operating environment, the double-roll granulator 10 also includes a hood 700, in which a second accommodating chamber 710 for partially accommodating the first roller 100 and the second roller 200 is provided, and one end of the hood 700 is connected to the base 600 so that the second accommodating chamber 710 is connected to the first accommodating chamber 610. The hood 700 can isolate the first roller 100 and the second roller 200 from the outside world, which can prevent external impurities from entering the material and affecting the quality of the final product, and can also prevent material splashing and affecting the operating environment. A feeding port 720 is provided at the other end of the hood 700 so that the material fed from the feeding port 720 can enter the granulation space 400. Through the feeding port 720, the material can be added to the granulation space 400 for processing and forming.

[0037] Furthermore, a plurality of guide plates 730 are provided on the hood 700 at the position of the feeding port 720, one end of each guide plate 730 is connected to the hood 700, and the other end of each guide plate 730 deviates in a direction away from the center of the feeding port 720, and each guide plate 730 is connected end to end in sequence. With the aid of the guide plates 730, the feeding port 720 can be extended on one side of the feeding port 720 to form a feeding space, thereby expanding the feeding range of the feeding port 720. As long as the material enters the feeding space, it can enter the feeding port 720 under the guidance of the guide plates 730 and finally fall into the granulation space 400 to be processed and formed. That is, the guide plates 730 increase the feeding range of the double-roll granulator 10, making the feeding operation more convenient.

[0038] In summary, the double-roll granulator 10 in the embodiment of the present invention can also well shape and discharge materials when processing materials with a low degree of dryness, and has a good processing effect.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A double-roll granulator, characterized in that: include: A first roller comprises a first rotating shaft, a first cylinder, a first elastic layer and a first pressing layer, wherein the first cylinder is fixed to the first rotating shaft and can rotate around the first rotating shaft, a plurality of first grooves are provided on the outer surface of the first cylinder, the first elastic layer is attached to the outer surface of the first cylinder and covers the first cylinder, the first pressing layer is attached to the outer surface of the first elastic layer and covers the first elastic layer, a plurality of first through holes are provided on the outer surface of the first pressing layer, the first through holes are arranged in a one-to-one correspondence with the first grooves, and when the first elastic layer is pressed to fit the surface of the first grooves, the first through holes are connected with the first grooves to form a first half cavity; The second roller comprises a second rotating shaft, a second cylinder, a second elastic layer and a second pressing layer, wherein the second rotating shaft is arranged in parallel with the first rotating shaft, the second cylinder is fixed to the second rotating shaft and can rotate around the second rotating shaft to form a granulation space between the second roller and the first roller, a plurality of second grooves are provided on the outer surface of the second cylinder, the second elastic layer is attached to the outer surface of the second cylinder and covers the second cylinder, the second pressing layer is attached to the outer surface of the second elastic layer and covers the second elastic layer, a plurality of second through holes are provided on the outer surface of the second pressing layer, the second through holes are arranged in a one-to-one correspondence with the second grooves, when the second elastic layer is pressed to fit the surface of the second grooves, the second through holes are connected with the second grooves to form a second half cavity, and the second half cavity is arranged in a one-to-one correspondence with the first half cavity; A power mechanism, the power mechanism is used to drive the first roller and the second roller to rotate, so that the first half cavity and the second half cavity in the granulation space are connected to form a granulation cavity; Wherein, each of the first through holes is arranged in a ring array on the outer surface of the first laminated layer, and each of the second through holes is arranged in a ring array on the outer surface of the second laminated layer; It also includes a base, which is provided with a first accommodating cavity for partially accommodating the first roller and the second roller, and two sides of the base are respectively provided with shaft seats for matching and installing the first rotating shaft and the second rotating shaft.

2. The double-roll granulator according to claim 1, characterized in that: The first elastic layer is a rubber layer or a silicone layer, and the second elastic layer is a rubber layer or a silicone layer.

3. The double-roll granulator according to claim 1, characterized in that: The power mechanism comprises a motor, and an output shaft of the motor is connected to the first rotating shaft and / or the second rotating shaft to drive the first roller and the second roller to rotate.

4. The double-roll granulator according to claim 3, characterized in that: The power mechanism also includes a first gear and a second gear, the first gear is configured to be meshed with the second gear for transmission, the first gear is connected to one end of the first rotating shaft, the second gear is connected to one end of the second rotating shaft, and the output shaft of the motor is connected to the other end of the first rotating shaft or the second rotating shaft.

5. The double-roll granulator according to claim 4, characterized in that: The first gear is externally meshed with the second gear so that the first roller and the second roller rotate in opposite directions.

6. The double-roll granulator according to claim 1, characterized in that: The granulation cavity is spherical.

7. The double-roll granulator according to claim 1, characterized in that: Also includes: A machine hood is provided with a second accommodating chamber for partially accommodating the first roller and the second roller, one end of the machine hood is connected to the base so that the second accommodating chamber is connected to the first accommodating chamber, and the other end of the machine hood is provided with a feeding port so that the material fed through the feeding port can enter the granulation space.

8. The double-roll granulator according to claim 7, characterized in that: A plurality of material guide plates are arranged on the machine cover at the position of the feeding port, one end of each material guide plate is connected to the machine cover, the other end of each material guide plate deviates in a direction away from the center of the feeding port, and each material guide plate is connected end to end in sequence.

Images