Shell paper raw material grinding device

Abstract

The application provides a shell paper raw material grinding device, and belongs to the technical field of shell powder preparation. The grinding device comprises a tank body, a pre-smashing mechanism, a grading mechanism and a grinding disc mechanism. The tank body is internally provided with a first chamber and a second chamber. The pre-smashing mechanism is arranged in the first chamber to grind the preliminarily smashed shell. The grading mechanism is arranged in the second chamber and comprises a disc, a partition plate and a filter plate. The disc is rotatably arranged in the second chamber and receives the shell discharged from the first chamber. The partition plate is movably arranged at the periphery of the disc. The filter plate is movably arranged on the disc in a closed shape. The partition plate and the filter plate form a plurality of storage cavities arranged in sequence along the radial direction of the disc on the disc. The size of the filter plates distributed from inside to outside is sequentially reduced. The grinding disc mechanism grinds the shell conveyed by the corresponding storage cavity. The pre-smashing mechanism is used for pre-smashing, the grading mechanism is used for grading, and the grinding disc mechanism is used for targeted fine grinding, so that the shell particles meeting the requirements of shell paper preparation can be ground.

Description

Technical Field

[0001] This invention relates to the field of shell powder preparation technology, and in particular to a shell paper raw material grinding device. Background Technology

[0002] Shell paper boasts a long-lasting natural color and is waterproof and fireproof, making it widely used in home decoration, lacquerware, musical instruments, art, watch decoration, and mobile phone decoration. The raw materials for shell paper primarily consist of shells from various types of oysters, including abalone, black-lipped oysters, white-lipped oysters, yellow-lipped oysters, pink oysters, penguin oysters, and freshwater pearl oysters, which are transformed into powdery granules through a series of processing steps. This process typically includes shell selection, washing, drying, calcination, crushing, and grinding.

[0003] Currently, the grinding stage mainly involves using common grinding equipment to form dry powder that meets the required fineness grade. However, existing grinding equipment has a relatively limited function and cannot uniformly grind broken seashells, resulting in a large range in the fineness of the prepared seashell powder. This leads to the production of powdered particles that do not meet the required fineness grade, ultimately compromising the performance of seashell paper produced from this powder. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a shell paper raw material grinding device, which can obtain shell powder with uniform fineness distribution by classifying the shell powder and then grinding it accordingly.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a shell paper raw material grinding device, including a tank, a pre-crushing mechanism, a grading mechanism, and a grinding disc mechanism. The tank has a first chamber and a second chamber arranged vertically. The second chamber has a circular radial cross-section. A first connecting channel that can be opened and closed is provided between the first and second chambers. The pre-crushing mechanism is located in the first chamber and is used to grind the pre-crushed shells. The grading mechanism is located in the second chamber and includes a disc, a partition, and filter plates. The disc is rotatably disposed in the second chamber, and its sidewall slides in contact with the sidewall of the second chamber. The partition is movably disposed around the periphery of the disc to move perpendicularly to it. Multiple filter plates are arranged in a closed shape, each with a different size, and are movably disposed on the disc to move perpendicularly to it. The disc moves vertically, with the partitions and filter plates moving upwards. When both move upwards, the tops of the partitions and filter plates are higher than the surface of the disc near the first chamber, forming multiple storage cavities. These cavities are arranged radially around the disc, with the innermost cavities receiving shells discharged from the first chamber through the first connecting channel. The size of the filter plates decreases sequentially from the inside out. When both move downwards, the tops of the partitions and filter plates are flush with the surface of the disc near the first chamber. The sidewall of the second chamber has a second connecting channel that can be opened and closed, corresponding to the disc's position. The number of grinding disc mechanisms is equal to the number of storage cavities, and each grinding disc mechanism has a different grinding fineness. These grinding disc mechanisms are used to grind the shells transported to the corresponding storage cavity through the second connecting channel.

[0007] In addition, the shell paper raw material grinding apparatus according to the present invention may also have the following additional technical features:

[0008] Furthermore, the storage cavity is equipped with a stirring mechanism, which includes a stirring rod, blades, and a first driving device. The stirring rod is rotatably mounted on a disc, the blades are located at one end of the stirring rod near the storage cavity, and the first driving device is mounted on the disc and is connected to the stirring rod for transmission, so as to drive the stirring rod to rotate relative to the disc.

[0009] Furthermore, a first lifting mechanism is provided between the filter plate and the disc. The first lifting mechanism is used for the filter plate to move vertically relative to the disc. The disc is provided with a first sliding groove that matches the filter plate. The first lifting mechanism includes a first lead screw, a first sleeve, and a second driving device. One end of the first lead screw is rotatably mounted on the filter plate. The first sleeve is mounted on the disc and threadedly connected to the first lead screw. The second driving device is mounted on the disc and is drivenly connected to the other end of the first lead screw.

[0010] Furthermore, a second lifting mechanism is provided between the partition and the disc. The second lifting mechanism is used to drive the partition to move vertically relative to the disc. The disc is provided with a second sliding groove that matches the partition. The second lifting mechanism includes a second lead screw, a second sleeve, and a third driving device. One end of the second lead screw is rotatably mounted on the partition. The second sleeve is mounted on the disc and threadedly connected to the second lead screw. The third driving device is mounted on the disc and is drivenly connected to the other end of the second lead screw.

[0011] Furthermore, a rotating shaft is rotatably mounted on the wall of the second chamber, and a fourth driving device is mounted on the tank body. The fourth driving device is connected to the rotating shaft to drive the rotating shaft to rotate relative to the tank body. A disc is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft. Two opposing limiting rings are mounted on the rotating shaft, and the disc is located between the two limiting rings. Elastic buffers are provided between the two limiting rings and the disc, and the elastic buffers are arranged in an array along the circumference of the rotating shaft.

[0012] Furthermore, the rotating shaft is provided with a conveying pipe that communicates with the first communicating channel. The lowest end of the conveying pipe is higher than the disc. The side wall of the rotating shaft is provided with multiple first discharge ports that communicate with the lowest end of the conveying pipe. The first discharge ports are higher than the disc. The multiple first discharge ports are evenly arrayed along the circumference of the rotating shaft.

[0013] Furthermore, the bottom of the partition is provided with corrugated protrusions, and the bottom of the second chamber is provided with a support base, which is provided with pulleys arranged in an interval array to cooperate with the protrusions.

[0014] Furthermore, multiple grinding disc mechanisms are vertically stacked according to the grinding fineness from large to small. Each grinding disc mechanism includes a housing and a grinding disc. The housing is provided with a grinding groove, and the grinding disc is rotatably disposed in the grinding groove. The grinding grooves of each grinding disc mechanism are interconnected through a discharge channel, and each grinding groove is connected to a second connecting channel.

[0015] Furthermore, the tank body is provided with an inverted conical buffer tank, which is connected to the first connecting channel. The pre-crushing mechanism includes a sealing plate, a grinding table, and grinding plates. The sealing plate is used to divide the first chamber into a first sub-chamber and a second sub-chamber distributed vertically. The side wall of the first sub-chamber is provided with multiple second discharge ports. The grinding table is rotatably mounted on the sealing plate and located in the first sub-chamber. Multiple grinding plates are provided, and multiple grinding plates are rotatably mounted in the first sub-chamber. The grinding plates are arranged in multiple rings along the circumference of the grinding table, and the grinding pressure between the grinding plates and the grinding table increases sequentially as they are distributed radially outward. One end of the second discharge port corresponds to the position of the grinding table, and the other end of the second discharge port is connected to the buffer tank.

[0016] Furthermore, the first connecting channel is inverted conical in shape and its large end extends into the second sub-chamber. The large end of the first connecting channel is connected to the sealing plate. The buffer tank is connected to the top of the large end of the first connecting channel. The buffer tank introduces airflow tangential to the circumference of the first connecting channel into the first connecting channel. The large end of the first connecting channel is also provided with a discharge pipe connected to the outside of the tank.

[0017] The beneficial effects of this invention include at least the following: First, a pre-crushing mechanism finely grinds the granular material containing larger shell particles during the crushing stage, further reducing the fineness distribution range of the prepared shell particles. Then, a grading mechanism classifies the shell particles within different fineness distribution ranges. Finally, a grinding disc mechanism with a corresponding grinding fineness performs targeted grinding on the corresponding type of shell particles. Ultimately, shell particles with a uniform fineness range can be obtained efficiently, and the prepared shell particles meet the requirements for preparing shell paper. Compared to the simple and extensive grinding methods in the prior art, this method of pre-crushing, grading, and then targeted fine grinding reduces the likelihood of large-diameter and small-diameter shell particles interfering with each other during mixing and grinding, thus preventing the uniformity of the ground shell particles from failing to meet the requirements for preparing shell paper. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the shell paper raw material grinding device in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the pre-crushing mechanism in one embodiment of the present invention;

[0020] Figure 3 This is a first-view structural schematic diagram of the grading mechanism in one embodiment of the present invention;

[0021] Figure 4 for Figure 3 A second-view structural diagram of the hierarchical mechanism in the diagram;

[0022] Figure 5 This is a schematic diagram of the stirring mechanism in one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the second lifting mechanism in one embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the first lifting mechanism in one embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the assembly of the partition and the support base in one embodiment of the present invention;

[0026] Figure 9This is a schematic diagram of the structure of the rotating shaft in one embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the grinding disc mechanism in one embodiment of the present invention;

[0028] Explanation of key component symbols:

[0029] Tank body 100, first chamber 110, first sub-chamber 111, second sub-chamber 112, second chamber 120, support base 123, pulley 124, second discharge port 125, rotating shaft 130, limiting ring 131, elastic buffer 132, conveying pipe 133, first discharge port 134, fourth drive device 140, first connecting channel 150, discharge pipe 151, second connecting channel 160;

[0030] Pre-crushing mechanism 200, sealing plate 210, grinding table 220, grinding plate 230;

[0031] The classification mechanism 300, disc 310, storage cavity 311, first chute 312, second chute 313, partition 320, protrusion 321, and filter plate 330 are included.

[0032] Grinding disc mechanism 400, housing 410, discharge channel 411, grinding groove 412, grinding disc 420;

[0033] The stirring mechanism 500, stirring rod 510, blade 520, and first driving device 530 are included.

[0034] The first lifting mechanism 600, the first lead screw 610, the first sleeve 620, and the second driving device 630;

[0035] Second lifting mechanism 700, second lead screw 710, second sleeve 720, third drive device 730;

[0036] Buffer tank 800;

[0037] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0038] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0039] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Please refer to Figures 1 to 10 The present invention provides a shell paper raw material grinding device, which includes a tank 100, a pre-crushing mechanism 200, a grading mechanism 300, and a grinding disc mechanism 400.

[0042] The tank 100 has a first chamber 110 and a second chamber 120 arranged vertically. The radial cross-section of the second chamber 120 is circular. A first connecting channel 150 that can be opened and closed is provided between the first chamber 110 and the second chamber 120. A pre-crushing mechanism 200 is provided in the first chamber 110. Before use, the shells crushed by the crushing device are added into the first chamber 110. During use, the pre-crushing mechanism 200 grinds the shells in the first chamber 110, making the shells finer.

[0043] Since the shell particles obtained after the pre-crushing mechanism 200 have a large range of fineness distribution, which does not meet the requirements for preparing shell paper, in this embodiment, a grading mechanism 300 is used to grade the shells after the pre-crushing mechanism 200, classifying the shell particles in different fineness distribution ranges, and then grinding each type of shell particles in a targeted manner, so that the final shell particles have a uniform fineness range and meet the requirements for preparing shell paper.

[0044] Specifically, the grading mechanism 300 is located within the second chamber 120 and includes a disc 310, a partition 320, and a filter plate 330. The disc 310 is rotatably positioned within the second chamber 120. During use, the shell particles obtained from the pre-crushing mechanism 200 in the first chamber 110 are transferred to the disc 310 via the first connecting channel 150. To prevent shell particles from entering the area between the sidewall of the disc 310 and the sidewall of the second chamber 120 during disc 310's reception and rotation, the sidewall of the disc 310 is made to slide in contact with the sidewall of the second chamber 120, thus not affecting the rotation and vertical movement of the disc 310. The partition 320 is movably positioned around the periphery of the disc 310, specifically moving perpendicularly to the disc 310. The filter plates 330 are arranged in a closed shape and there are multiple ones. Preferably, the filter plates 330 are arranged in a circle. Each filter plate 330 has a different size. The filter plates 330 are movably arranged on the disk 310. Specifically, the movement direction is perpendicular to the disk 310.

[0045] In addition, the side wall of the second chamber 120 is provided with a second connecting channel 160 that can be opened and closed, corresponding to the position of the disc 310, so as to transfer the shell particles obtained after processing by the grading mechanism 300 to the grinding disc mechanism 400 through the second connecting channel 160.

[0046] In this embodiment, when both the partition 320 and the filter plate 330 move upward, the tops of both the partition 320 and the filter plate 330 are higher than the upper surface of the disk 310, where the upper surface of the disk 310 refers to the side surface of the disk 310 closest to the first chamber 110. At this time, the partition 320 and the filter plate 330 form a plurality of storage cavities 311 around the upper surface of the disk 310. The plurality of storage cavities 311 are arranged in a radial order along the disk 310, that is, the outer ring of storage cavities 311 surrounds the inner ring of storage cavities 311, and the size of the filter plates 330 distributed from the inside to the outside decreases sequentially.

[0047] The number of grinding disc mechanisms 400 and storage cavities 311 is equal, and the grinding fineness of each grinding disc mechanism 400 is different. In use, the grinding disc mechanism 400 receives the shell particles transmitted from the grading mechanism 300 and performs further grinding until shell particles that meet the requirements of shell paper are prepared.

[0048] In use, the innermost storage cavity 311 receives the seashells discharged from the first chamber 110 through the first connecting channel 150. Simultaneously, the disc 310 rotates the seashell particles within the innermost storage cavity 311. Since the size of the filter plates 330 decreases sequentially from the inside out, under centrifugal force, seashell particles of varying fineness accumulate within the storage cavities 311 arranged radially along the disc 310. Furthermore, because each grinding disc mechanism 400 has a different grinding fineness, each grinding disc mechanism 400 can be connected to the corresponding fineness-distributed storage cavity 311 via the second connecting channel 160. At this point, because the fineness distribution of the seashell particles within the storage cavity 311 is relatively concentrated, fine grinding with a grinding disc mechanism 400 adapted to the appropriate grinding fineness can efficiently produce seashell particles that meet the requirements for preparing seashell paper.

[0049] It is understandable that the smaller the sieve hole size interval between adjacent filter plates 330, the more concentrated the fineness distribution of the shell particles distributed in the storage cavity 311.

[0050] In this embodiment, when both the partition 320 and the filter plate 330 move downwards, the tops of both the partition 320 and the filter plate 330 are flush with the upper surface of the disk 310.

[0051] In use, the outermost baffle 320 is first lowered until its top is flush with the upper surface of the disc 310. At this point, under the centrifugal force generated by the rotating disc 310, the shell particles in the outermost storage chamber 311 are thrown out of the disc 310 and transferred to the grinding disc mechanism 400 of the corresponding grinding fineness through the second connecting channel 160 provided on the inner wall of the second chamber 120. Next, each filter plate 330 is opened sequentially from the outside to the inside until the shell particles in each storage chamber 311 are transferred to the grinding disc mechanism 400 of the corresponding grinding fineness for processing.

[0052] It should be noted that in order to correctly transfer the shell particles in a certain storage cavity 311 to the grinding disc mechanism 400 with the corresponding grinding fineness, when the second connecting channel 160 is connected to the grinding disc mechanism 400, it is necessary to set up an opening and closing device with the same number as the grinding disc mechanism 400, such as a solenoid valve. By opening the solenoid valves at different positions in sequence, the purpose of transferring the shell particles in each storage cavity 311 to the grinding disc mechanism 400 with the corresponding grinding fineness can be achieved.

[0053] During the rotation of the disk 310, the shell particles in the innermost storage cavity 311 need to pass through the filter plates 330, whose sizes decrease sequentially from the inside to the outside. However, when the shell particles in the storage cavity 311 agglomerate, the agglomerated shell particles contain shell particles of different fineness distributions. This may prevent smaller-diameter shell particles from moving into the outer storage cavity 311, leading to grading failure. Therefore, in some optional embodiments, such as... Figure 1 As shown, a stirring mechanism 500 is provided in the storage cavity 311. Specifically, the stirring mechanism 500 includes a stirring rod 510, a blade 520, and a first driving device 530.

[0054] The stirring rod 510 is rotatably mounted on the disc 310, and the blades 520 are located at the upper end of the stirring rod 510, which refers to the end of the stirring rod 510 closest to the storage cavity 311. A first driving device 530 is mounted on the disc 310 and is also connected to the stirring rod 510 in a transmission manner. During operation, the first driving device 530 drives the stirring rod 510 to rotate relative to the disc 310. The rotation of the stirring rod 510 drives the blades 520 to rotate, which stirs the shell particles in the storage cavity 311, dispersing them and preventing agglomeration, thus facilitating filtration by the filter plate 330. Optionally, the first driving device 530 can be a rotary motor, rotary cylinder, or other power device.

[0055] In some alternative embodiments, such as Figure 7 As shown, a first lifting mechanism 600 is provided between the filter plate 330 and the disc 310, which enables the filter plate 330 to move vertically relative to the disc 310. Specifically, the disc 310 has a first sliding groove 312 that matches the filter plate 330, and the filter plate 330 is inserted into the first sliding groove 312. The first lifting mechanism 600 includes a first lead screw 610, a first sleeve 620, and a second driving device 630. The upper end of the first lead screw 610 is rotatably connected to the filter plate 330. The first sleeve 620 is fixed on the disc 310 and threadedly connected to the first lead screw 610. The second driving device 630 is also fixed on the disc 310 and is also drively connected to the lower end of the first lead screw 610. Optionally, the second driving device 630 can be a rotary motor, a rotary cylinder, or other power device.

[0056] In this embodiment, when the filter plate 330 needs to cooperate with the partition plate 320 to form multiple storage cavities 311 around the upper surface of the disk 310, the second driving device 630 actuates to drive the first lead screw 610 to rotate in a certain direction. Since the first sleeve 620 is stationary relative to the disk 310, the lower end of the first lead screw 610 will move upward relative to the first sleeve 620. The upwardly moving first sleeve 620 pushes the filter plate 330 to move within the first sliding groove 312, and the direction of movement is upward. Similarly, when it is necessary to throw the shell particles in the storage cavity 311 out of the disk 310, the second driving device 630 drives the first lead screw 610 to rotate in the opposite direction.

[0057] In some alternative embodiments, such as Figure 6As shown, a second lifting mechanism 700 is provided between the partition 320 and the disc 310. The second lifting mechanism 700 enables the partition 320 to move vertically relative to the disc 310. The disc 310 has a second sliding groove 313 that matches the partition 320, and the partition 320 is inserted into the second sliding groove 313. The second lifting mechanism 700 includes a second lead screw 710, a second sleeve 720, and a third driving device 730. The upper end of the second lead screw 710 is rotatably connected to the partition 320. The second sleeve 720 is fixed to the disc 310 and threadedly connected to the second lead screw 710. The third driving device 730 is also fixed to the disc 310 and is also drively connected to the lower end of the first lead screw 710. Optionally, the third driving device 730 can be a rotary motor, rotary cylinder, or other power device.

[0058] In this embodiment, when the partition 320 needs to cooperate with the filter plate 330 to form multiple storage cavities 311 around the upper surface of the disk 310, the third driving device 730 actuates to drive the second lead screw 710 to rotate in a certain direction. Since the second sleeve 720 is stationary relative to the disk 310, the lower end of the second lead screw 710 will move upward relative to the second sleeve 720. The upwardly moving second sleeve 720 pushes the partition 320 to move within the second groove 313, and the direction of movement is upward. Similarly, when it is necessary to throw the shell particles in the storage cavity 311 out of the disk 310, the third driving device 730 drives the second lead screw 710 to rotate in the opposite direction.

[0059] In order to enable the disk 310 to rotate within the second chamber 120, in some alternative embodiments, such as Figure 1 , Figure 9 As shown, a rotating shaft 130 is rotatably mounted on the wall of the second chamber 120, and a disc 310 is fitted onto the rotating shaft 130, allowing the disc 310 to rotate together with the shaft 130. Furthermore, a fourth drive device 140 is provided on the tank body 100, and the fourth drive device 140 is connected to the rotating shaft 130 in a transmission connection. During operation, the fourth drive device 140 drives the rotating shaft 130 to rotate relative to the tank body 100, thereby causing the disc 310 to rotate within the second chamber 120 and generating centrifugal force for grading. Optionally, the fourth drive device 140 can be a rotary motor, rotary cylinder, or other power device.

[0060] Meanwhile, to ensure the stable rotation of the disc 310 carrying the shell particles, the disc 310, sleeved on the rotating shaft 130, can also slide along the axial direction of the rotating shaft 130. For example, the disc 310 and the rotating shaft 130 can be assembled together using a key. Furthermore, to limit the sliding stroke range of the disc 310, two opposing limiting rings 131 are provided on the rotating shaft 130, with the disc 310 located between the two limiting rings 131. Further, elastic buffers 132 are provided between each of the two limiting rings 131 and the disc 310, and the elastic buffers 132 are arranged in a circumferential array along the rotating shaft 130. Optionally, the elastic buffers 132 can be springs or other elastic elements.

[0061] In this embodiment, when the weight distribution of the shell particles carried by the disc 310 is uneven, the disc 310 tends to deflect to the heavier side. This will increase the local contact pressure between the disc 310 and the rotating shaft 130. Over time, this can easily lead to deformation of the disc 310, which in turn affects the sliding of the edge of the disc 310 on the side wall of the second chamber 120. By setting the disc 310 to be able to slide along the axial direction of the rotating shaft 130, and by providing an elastic buffer 132 between the limiting ring 131 and the disc 310, the elastic buffer 132 provides a reverse force to prevent deflection, so that the disc 310 is as horizontal as possible when rotating, thereby alleviating the deformation caused by uneven weight distribution.

[0062] When the disc 310 rotates within the second chamber 120, in order to prevent the rotating shaft 130 that drives the disc 310 from affecting the unloading operation of the first chamber 110, in some optional embodiments, such as... Figure 1 , Figure 9 As shown, the rotating shaft 130 is provided with a conveying pipe 133 that communicates with the first communicating channel 150. Multiple first discharge ports 134, connected to the lowest end of the conveying pipe 133, are provided on the side wall of the rotating shaft 130. The lowest point of the conveying pipe 133 is higher than the disc 310, and the height of the first discharge ports 134 is also higher than the disc 310. This ensures that all the shell particles in the conveying pipe 133 can be discharged from the first discharge ports 134 into the innermost storage cavity 311. Furthermore, the multiple discharge ports are evenly arrayed along the circumference of the rotating shaft 130, allowing the shell particles discharged from the first discharge ports 134 to fall more evenly into the innermost storage cavity 311. Simultaneously, the discharge method from the side wall of the rotating shaft 130 prevents the shell particles from concentrating and impacting the disc 310 during unloading, avoiding significant deformation of the disc 310 and ensuring stable rotation of the disc carrying the shell particles.

[0063] During the rotation of the disc 310, the seashell particles in the innermost storage cavity 311 need to pass through the filter plates 330, whose sizes decrease sequentially from the inside out. However, when the seashell particles in the storage cavity 311 agglomerate, the agglomerated seashell particles may adhere to the filter screen, partition plate 320, and disc 310. Even if the disc 310 generates a certain amount of centrifugal force during rotation, this centrifugal force may not be able to dislodge the adhered seashell particles in time. Furthermore, when the adhesion of the seashell particles in the storage cavity 311 increases due to moisture, the centrifugal force generated by the rotation of the disc 310 may be even less able to dislodge the adhered seashell particles. Therefore, in some optional embodiments, such as... Figure 8 As shown, a corrugated protrusion 321 is provided at the bottom of the partition 320, and a support base 123 is provided at the bottom of the second chamber 120. The support base 123 is provided with pulleys 124 arranged in an array at intervals to cooperate with the protrusion 321. When the top of the partition 320 is flush with the upper surface of the disk 310, the pulleys 124 on the support base 123 are in contact with the protrusion 321 on the partition 320. When the top of the partition 320 is higher than the upper surface of the disk 310, the protrusion 321 on the partition 320 moves away from the pulleys 124 on the support base 123.

[0064] In this embodiment, when the partition 320 rotates together with the disc 310, the protrusion 321 periodically engages in the gap between the pulleys 124 and is supported on the pulleys 124. Since the disc 310 sleeved on the rotating shaft 130 can also slide along the axial direction of the rotating shaft 130, the partition 320 will be in a state of up and down bumping during this process, which will cause the disc 310 to bump together. With the help of the stirring mechanism 500 provided in the storage cavity 311, the adhering shell particles can be shaken apart, and the agglomerated shell particles can also be broken up, thereby ensuring the smooth progress of the grading process.

[0065] In addition, the pulley 124 can rotate relative to the support 123, so that when the partition 320 rotates, the protrusion 321 is not easily stuck between the pulleys 124, so that the cooperation between the protrusion 321 and the pulley 124 does not affect the rotation of the disc 310.

[0066] When the storage cavity 311 containing larger-diameter seashell particles is connected to the grinding disc mechanism 400 of a corresponding grinding fineness via the second connecting channel, smaller-diameter seashell particles that do not meet the requirements for preparing seashell paper will still be generated during the grinding process at this grinding disc mechanism 400. These seashell particles need to be manually screened out and then added to grinding disc mechanisms 400 of other grinding fineness for fine grinding. This operation is not only tedious and labor-intensive, but also requires the addition of grinding disc mechanisms 400, increasing production costs. Therefore, in some optional embodiments, such as Figure 10As shown, multiple grinding disc mechanisms 400 are vertically stacked according to their grinding fineness from large to small, with the uppermost grinding disc mechanism 400 having the largest grinding fineness.

[0067] Specifically, the grinding mechanism 400 includes a housing 410 and a grinding disc 420. The housing 410 is provided with a grinding groove 412, and the grinding disc 420 is rotatably disposed within the grinding groove 412. A gap is provided between the grinding disc 420 and the grinding groove 412. The grinding grooves 412 of each grinding mechanism 400 are interconnected through a discharge channel 411, and each grinding groove 412 is connected to a second connecting channel 160. It should be noted that the grinding fineness of the grinding mechanism 400 can be adjusted by adjusting the gap between the grinding disc 420 and the grinding groove 412, and by adjusting the rotational speed of the grinding disc 420.

[0068] In some alternative embodiments, such as Figure 1 As shown, the tank body 100 is provided with an inverted conical buffer tank 800, with the small end of the inverted conical buffer tank 800 facing downwards. The small end of the conical buffer tank 800 is also connected to the first connecting channel 150. The pre-crushing mechanism 200 includes a sealing plate 210, a grinding table 220, and a grinding plate 230.

[0069] The sealing plate 210 divides the first chamber 110 into a first sub-chamber 111 and a second sub-chamber 112, which are distributed vertically. Multiple second discharge ports 125 are provided on the side wall of the first sub-chamber 111. A grinding table 220 is located within the first sub-chamber 111 and is rotatably mounted on the sealing plate 210. Multiple grinding plates 230 are provided, rotatably mounted within the first sub-chamber 111. The grinding plates 230 are arranged in multiple rings around the circumference of the grinding table 220 to grind the shell particles on the grinding table 220 as thoroughly as possible. Because the grinding table 220 generates centrifugal force when rotating, larger shell particles move towards the outer ring of the grinding table 220 under the action of this centrifugal force. To ensure uniform grinding, the grinding pressure between the grinding plates 230 distributed radially outwards and the grinding table 220 increases sequentially. It should be noted that the grinding plate 230 and the grinding table 220 need to maintain a certain distance so that the shell particles can enter the gap between them. Furthermore, to effectively discharge the ground shell particles, one end of the second discharge port 125 corresponds to the position of the grinding plate 230, and the other end of the second discharge port 125 is connected to the buffer tank 800. This allows the shell particles ejected from the periphery of the grinding table 220 to enter the inverted conical buffer tank 800 through the second discharge port 125. Simultaneously, since the small end of the inverted conical buffer tank 800 is connected to the first connecting channel 150, the shell particles in the buffer tank 800 can smoothly fall into the first connecting channel 150.

[0070] In this embodiment, by cooperating with the independently rotating grinding table 220 and grinding plate 230, and by setting the grinding pressure between the grinding plate 230 and the grinding table 220, which are distributed radially outward along the grinding table 220, to increase sequentially, the shell particles can be ground uniformly.

[0071] Since the seashell particles prepared by the pre-crushing mechanism 200 may contain particles that meet the requirements for preparing seashell paper, further fine grinding by the grinding disc mechanism 400 may lead to over-grinding, increasing the workload of grading and the power consumption of the equipment. Therefore, in some optional embodiments, such as Figure 1 As shown, the first connecting channel 150 is configured as an inverted cone shape, with the smaller end of the inverted cone-shaped first connecting channel 150 facing downwards and the larger end facing upwards, extending into the second sub-chamber 112 until the top of the larger end of the first connecting channel 150 connects to the lower end of the sealing plate 210. The larger end of the first connecting channel 150 is also provided with a discharge pipe 151 communicating with the outside of the tank body 100. In addition, in order to transport the shell particles in the buffer tank 800 to the second chamber 120 through the first connecting channel 150, the buffer tank 800 is connected to the top of the larger end of the first connecting channel 150. To separate the shell particles in the buffer tank 800 that meet the requirements for preparing shell paper, a flowing airflow is introduced into the buffer tank 800. When this flowing airflow is blown into the first connecting channel 150, it carries the shell particles from the buffer tank 800 along the tangential direction of the side wall of the first connecting channel 150. The flowing airflow then rotates and moves downwards within the inverted conical first connecting channel 150. During this process, large-diameter shell particles are thrown towards the inner wall of the first connecting channel 150 due to centrifugal force, while the gas continues to move along the central axis. When the airflow reaches a certain position at the bottom of the small end of the first connecting channel 150, it turns upwards to form an internal vortex and is discharged through the discharge pipe 151. Simultaneously, the shell particles thrown towards the inner wall of the first connecting channel 150 fall along the wall under the combined action of the airflow and gravity, reaching the bottom of the small end of the first connecting channel 150, while the shell particles that meet the requirements for preparing shell paper are discharged from the discharge pipe 151 along the internal vortex.

[0072] In summary, the shell paper raw material grinding device in this embodiment uses a pre-crushing mechanism 200 to finely grind the granular material containing larger shell particles during the crushing stage, further reducing the fineness distribution range of the prepared shell particles. Then, a grading mechanism 300 processes the material to classify shell particles within different fineness distribution ranges. Finally, a grinding disc mechanism 400 corresponding to the appropriate grinding fineness performs targeted grinding on the corresponding type of shell particles. Ultimately, shell particles with a uniform fineness range can be obtained efficiently, and the prepared shell particles meet the requirements for preparing shell paper. Compared to the simple and extensive grinding methods in existing technologies, this method of pre-crushing, grading, and then targeted fine grinding reduces the likelihood of large-diameter and small-diameter shell particles interfering with each other during mixing and grinding, thus preventing the uniformity of the ground shell particles from failing to meet the requirements for preparing shell paper.

[0073] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A grinding device for seashell paper raw materials, characterized in that, The shell paper raw material grinding device includes: The tank body has a first chamber and a second chamber distributed vertically inside the tank body. The radial cross-section of the second chamber is circular. A first connecting channel that can be opened and closed is provided between the first chamber and the second chamber. A pre-crushing mechanism, located in the first chamber, is used to grind the pre-crushed shells; A grading mechanism is disposed within the second chamber, the grading mechanism comprising: A disc is rotatably disposed within the second chamber, with the sidewall of the disc in sliding contact with the sidewall of the second chamber; A partition is movably disposed on the periphery of the disk so as to move perpendicularly relative to the disk; The filter plates are arranged in a closed shape and there are multiple filter plates. Each filter plate has a different size. The filter plates are movably mounted on the disk so as to move perpendicularly to the disk. When both the partition and the filter plate move upward, the tops of both the partition and the filter plate are higher than the surface of the disk near the first chamber, forming multiple storage cavities. These storage cavities are arranged radially along the disk, with the innermost storage cavity receiving shells discharged from the first chamber through the first communication channel. The size of the filter plates decreases sequentially from the inside out. When both the partition and the filter plate move downward, the tops of both the partition and the filter plate are flush with the surface of the disk near the first chamber. The side wall of the second chamber is provided with a second connecting channel that can be opened and closed, corresponding to the position of the disc; The number of grinding disc mechanisms is equal to that of the storage cavities, and each grinding disc mechanism has a different grinding fineness. The grinding disc mechanism is used to grind the shells transported to the corresponding storage cavity through the second connecting channel. When the grading mechanism releases material, the partition moves downward, and then the filter plates distributed from the outside to the inside move downward in sequence. During this period, the material in different storage cavities is transported to the corresponding grinding disc mechanism through the second connecting channel at different times.

2. The shell paper raw material grinding device according to claim 1, characterized in that, The storage cavity is equipped with a stirring mechanism, which includes: A stirring rod is rotatably mounted on the disc. The blade is located at one end of the stirring rod near the storage cavity; A first driving device is disposed on the disk and is connected to the stirring rod in a driving manner to drive the stirring rod to rotate relative to the disk.

3. The shell paper raw material grinding device according to claim 1, characterized in that, A first lifting mechanism is provided between the filter plate and the disc. The first lifting mechanism is used for the filter plate to move vertically relative to the disc. The disc is provided with a first sliding groove that matches the filter plate. The first lifting mechanism includes: The first lead screw has one end rotatably mounted on the filter plate; The first sleeve is disposed on the disk and is threadedly connected to the first lead screw; The second driving device is located on the disk and is connected to the other end of the first lead screw.

4. The shell paper raw material grinding device according to claim 1, characterized in that, A second lifting mechanism is provided between the partition and the disk. The second lifting mechanism is used to drive the partition to move vertically relative to the disk. The disk is provided with a second sliding groove that matches the partition. The second lifting mechanism includes: The second lead screw has one end rotatably mounted on the partition plate; The second sleeve is disposed on the disc and is threadedly connected to the second lead screw; The third driving device is located on the disk and is connected to the other end of the second lead screw.

5. The shell paper raw material grinding device according to claim 4, characterized in that, A rotating shaft is rotatably mounted on the wall of the second chamber. A fourth driving device is mounted on the tank body and is connected to the rotating shaft to drive the rotating shaft to rotate relative to the tank body. The disc is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft. Two opposing limiting rings are mounted on the rotating shaft. The disc is located between the two limiting rings. Elastic buffers are provided between the two limiting rings and the disc. The elastic buffers are arranged in a circumferential array along the rotating shaft.

6. The shell paper raw material grinding device according to claim 5, characterized in that, The rotating shaft is provided with a conveying pipe that communicates with the first communicating channel. The lowest end of the conveying pipe is higher than the disc. The side wall of the rotating shaft is provided with a plurality of first discharge ports that communicate with the lowest end of the conveying pipe. The first discharge ports are higher than the disc. The plurality of first discharge ports are evenly arrayed along the circumference of the rotating shaft.

7. The shell paper raw material grinding device according to claim 5, characterized in that, The bottom of the partition is provided with corrugated protrusions, and the bottom of the second chamber is provided with a support base. The support base is provided with pulleys arranged in an array at intervals to cooperate with the protrusions.

8. The shell paper raw material grinding device according to claim 1, characterized in that, Multiple grinding disc mechanisms are vertically stacked in descending order of grinding fineness, and each grinding disc mechanism includes: The housing is equipped with a grinding groove; The grinding disc is rotatably mounted inside the grinding groove; The grinding grooves of each grinding disc mechanism are interconnected through a discharge channel, and each grinding groove is connected to the second connecting channel.

9. The shell paper raw material grinding device according to claim 1, characterized in that, The tank body is provided with an inverted conical buffer tank, which is connected to the first communicating channel. The pre-crushing mechanism includes: A sealing plate is used to divide the first chamber into a first sub-chamber and a second sub-chamber distributed vertically. The first sub-chamber has multiple second discharge ports on its side wall; A grinding table is rotatably mounted on the sealing plate and located within the first sub-cavity. The grinding plates are provided in multiple ways and are rotatably disposed in the first sub-cavity. The grinding plates are arranged in multiple rings around the circumference of the grinding table, and the grinding pressure between the grinding plates and the grinding table increases sequentially as they are distributed radially outward from the grinding table. One end of the second discharge port corresponds to the position of the grinding table, and the other end of the second discharge port is connected to the buffer tank.

10. The shell paper raw material grinding device according to claim 9, characterized in that, The first connecting channel is inverted conical in shape and its large end extends into the second sub-cavity. The large end of the first connecting channel is connected to the sealing plate. The buffer tank is connected to the top of the large end of the first connecting channel. The buffer tank introduces airflow tangential to the circumference of the first connecting channel into the first connecting channel. The large end of the first connecting channel is also provided with a discharge pipe connected to the outside of the tank.

Images