Grinding and screening equipment and method for processing toothpaste raw materials

Abstract

The present invention relates to the technical field of toothpaste raw material processing, and discloses a grinding and screening device and method for toothpaste raw material processing, including a frame, the top and the inside of the frame are respectively fixedly connected with a table and a partition, the top of the table and the partition are respectively fixed with a grinding component and a screening component through a plurality of legs, and the screening component is located directly below the grinding component and is connected thereto. The present invention can not only perform fine grinding operations through the double grinding provided in the grinding component, and the grinding accuracy can be adaptively adjusted, but also can use the spiral disc bucket to form a spirally formed structure with the material receiving chamber as the head end in an outward and downward direction, so that under the action of centrifugal force and gravity, the ground raw materials in the material receiving chamber are moved along the spiral direction of the spiral disc bucket to the tail end position of the spiral disc bucket and complete the screening operation, so that the screening accuracy and screening rate requirements can be met while reducing the equipment volume.

Description

Technical Field

[0001] The invention relates to the technical field of toothpaste raw material processing, in particular to a grinding and screening device and a method for toothpaste raw material processing. Background Art

[0002] Toothpaste is a daily oral cleaning product. Its main ingredients include abrasives, detergents, wetting agents, preservatives, etc. In the production process of toothpaste, the grinding and screening processes are an important processing link, which are used to grind and screen the raw materials to ensure the quality and performance of the product.

[0003] The grinding process is mainly used to grind the raw materials to achieve the required particle size; the screening process is used to screen the ground materials to separate materials of different particle sizes.

[0004] The equipment currently used in the grinding and screening processes still has the following shortcomings:

[0005] The existing grinding and screening equipment are large in size, occupy a large space, have a low degree of integration, and the coordination between the processes is not high. When the screening equipment is reduced in size to meet the needs of different factories, the screening efficiency will inevitably decrease;

[0006] During the screening process, the screen holes of the screening equipment are prone to clogging during long-term use, which affects the screening rate and quality.

[0007] After the screening equipment is finished, unqualified raw materials will remain in the screening parts. Therefore, how to collect and quickly remove the unqualified raw materials is also an urgent problem to be solved.

[0008] Traditional grinding equipment usually adopts a single grinding method, such as ball milling or vibration milling. This method has low grinding efficiency and cannot meet the needs of large-scale production. Summary of the invention

[0009] Technical issues solved

[0010] In view of the deficiencies in the prior art, the present invention provides a grinding and screening device and method for processing toothpaste raw materials, which are mainly used to solve the problems that the existing grinding equipment and screening equipment are large in size, occupy a large space, have a low degree of integration, and are not highly coordinated between the processes. When the volume of the screening equipment is reduced to adapt to different plant requirements, the screening efficiency will inevitably decrease, and during the screening process, the sieve holes are prone to blockage during long-term use, affecting the screening rate and quality. After the screening is completed, unqualified raw materials will remain in the screening material component. Therefore, how to collect and quickly remove the unqualified raw materials is also an urgent problem to be solved. In addition, traditional grinding equipment usually adopts a single grinding method, such as ball milling or vibration milling, which has a low grinding efficiency and cannot meet the needs of large-scale production.

[0011] Technical Solution

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] A grinding and screening device for processing toothpaste raw materials comprises a frame, wherein a table top and a partition are fixedly connected to the top and the inside of the frame respectively, a grinding component and a screening component are fixed to the top of the table top and the partition respectively through a plurality of legs, and the screening component is located directly below the grinding component and is connected thereto, a driving component is provided on one side of the table top for simultaneously driving the grinding component and the screening component to operate at different speeds, a drawing component is provided inside the table top for quickly removing unqualified screening materials in the screening component, and a feeding component is provided on the top of the table top for continuously feeding the rotating grinding component.

[0014] Furthermore, the screening assembly includes an inverted cone-shaped shell, which is fixedly connected to the top of the partition, and the top and bottom of the inverted cone-shaped shell are both inverted cone surfaces inclined downward from the inside to the outside, and a material collection cavity is formed between the inverted cone surface and the bottom inner wall of the inverted cone-shaped shell. A discharge pipe connected to the material collection cavity is fixedly connected to the bottom of the inverted cone-shaped shell, and a rotating shaft 2 is installed at the bottom of the inverted cone-shaped shell through a bearing seat, and a sliding cavity is provided inside the rotating shaft 2, and a rotating frame that moves along its axial direction is provided in the sliding cavity through a key bar and a key groove. A tension spring 1 is fixedly connected between the bottom end of the rotating frame and the second rotating shaft, a spiral disc bucket is fixedly connected to the top of the rotating frame, a material receiving cavity is provided in the middle position of the top of the spiral disc bucket, and is spirally formed in an outward and downward direction with the material receiving cavity as the head end, a material storage hopper is provided at the tail end of the spiral disc bucket, a plurality of groups of screening holes are provided at the bottom of the spiral disc bucket, two oppositely distributed protrusions are provided at the top of the inverted cone surface, and the protrusions are intermittently in contact with the rotating frame, and a pushing component is provided on the outer wall of the bottom tail end of the spiral disc bucket for pushing the material in the material collecting cavity to the discharge pipe.

[0015] Based on the above-mentioned scheme, the pushing assembly includes a connecting arm, which is fixedly connected to the outer wall of the bottom end of the spiral disc bucket. A scraper arm is slidably connected to one side of the connecting arm. The bottom of the scraper arm is detachably connected to a scraper strip that fits the inner wall of the material collecting chamber by screws. A spring is fixedly connected between the connecting arm and the scraper arm.

[0016] As a further scheme of the present invention, the material extraction assembly includes a mounting frame 1, which is fixedly connected to the inside of the table top, and one side of the mounting frame 1 is fixedly connected to two guide rails, a slide is slidably connected between the two guide rails through a slide, the top of the slide is fixedly connected to a negative pressure suction pipe through a clamp, and the bottom end of the negative pressure suction pipe passes through an inverted cone shell and corresponds to the material storage hopper, one side outer wall of the material storage hopper is fixedly connected to a photoelectric sensor 2, the top outer wall of the inverted cone shell is fixedly connected to a photoelectric sensor 1, and one end of the photoelectric sensor passes through the inverted cone shell and corresponds to the photoelectric sensor 2, one side of the mounting frame 1 is fixedly connected to a cylinder, and one end of the cylinder piston rod is fixed to the slide.

[0017] Furthermore, the grinding assembly includes a positive cone shell and a rotating upper cover, the positive cone shell is fixedly connected to the top of the table, the rotating upper cover rotates on the circumferential outer wall of the positive cone shell and forms a closure on the positive cone shell, a coarse grinding mechanism is provided between the positive cone shell and the rotating upper cover, a feed discharge port is provided at the bottom of the positive cone shell, a material guide pipe connected to the screening assembly is fixedly connected in the feed discharge port, and a fine grinding mechanism for secondary grinding of the raw materials ground by the coarse grinding mechanism is provided in the material guide pipe.

[0018] On the basis of the above scheme, the coarse grinding mechanism includes a plurality of upper diamond blocks and a lower diamond block, and the plurality of upper diamond blocks and the lower diamond blocks are respectively and equidistantly fixedly connected to the top inner wall of the rotating upper cover and the bottom inner wall of the positive cone shell, the lengths of the upper diamond blocks and the lower diamond blocks follow the slope of the positive cone shell and the bottom ends of the upper diamond blocks and the top ends of the lower diamond blocks are respectively in contact with the positive cone shell and the rotating upper cover, the top of the rotating upper cover is fixedly connected to an annular material pipe and the middle position is fixedly connected to a connecting pipe rack.

[0019] As a further scheme of the present invention, the fine grinding mechanism includes an outer cone grinding cylinder and a connecting rod, the outer cone grinding cylinder is fixedly connected to the circumferential inner wall of the material guide tube, the connecting rod is provided with a avoidance groove inside, and the connecting rod is slidably connected to the connecting pipe frame through the avoidance groove, the bottom end of the connecting rod is fixedly connected to the inner cone grinding cylinder, the conical surface positions of the inner cone grinding cylinder and the outer cone grinding cylinder are both provided with spiral extrusion grooves, a gap is left between the inner cone grinding cylinder and the outer cone grinding cylinder, and the gap gradually decreases from top to bottom, an adjustment component for adjusting the gap size between the inner cone grinding cylinder and the outer cone grinding cylinder is provided between the connecting pipe frame and the connecting rod, the adjustment component includes an adjusting screw, the adjusting screw is threadedly connected to a threaded hole opened in the top of the connecting rod, the bottom end of the adjusting screw is rotatably connected to the top of the connecting pipe frame, a side threaded hole is opened on one side of the connecting pipe frame, and a locking screw for squeezing the connecting rod is threadedly connected in the side threaded hole.

[0020] Furthermore, the feeding assembly includes a support frame, which is fixedly connected to the top of the table, the top of the support frame is fixedly connected to a feeding hopper, the bottom end of the feeding hopper is fixedly connected to an arc-shaped feeding pipe, and the bottom end of the arc-shaped feeding pipe is inserted into the interior of the annular feeding pipe.

[0021] On the basis of the above scheme, the driving assembly includes a mounting frame 2, which is fixedly connected to the top of the table top, and the interior of the mounting frame 2 is rotatably connected to a rotating shaft 1 through a bearing, and the top and bottom ends of the rotating shaft 1 are respectively keyed to an upper acceleration pulley 1 and a lower reduction pulley 1, and an upper acceleration pulley 2 is fixedly connected to the circumferential outer side of the connecting pipe frame, and the upper acceleration pulley 2 is connected to the upper acceleration pulley 1 through a synchronous belt transmission, and the bottom end of the rotating shaft 2 is fixedly connected to a lower reduction pulley 2, and the lower reduction pulley 2 is connected to the lower reduction pulley 1 through a synchronous belt transmission, and a servo motor is fixedly connected to one side of the mounting frame 2, and a synchronous pulley is provided at one end of the servo motor output shaft and one side of the rotating shaft 1, and the two synchronous pulleys are connected through a synchronous belt transmission.

[0022] A grinding and screening method for processing toothpaste raw materials, comprising the following steps:

[0023] S1: First, the servo motor is started, and the servo motor rotates to drive the rotating shaft 1 through the synchronous pulley, and the rotating shaft 1 rotates through the upper acceleration pulley 1 to drive the upper acceleration pulley 2 to drive the connecting pipe rack to rotate faster, thereby realizing the high-speed grinding requirement of the grinding component, and at the same time, the rotating shaft 1 rotates through the lower reduction pulley 1 to drive the lower reduction pulley 2 to rotate slower, thereby realizing the low speed requirement of the screening component;

[0024] S2: Then, the toothpaste raw materials to be ground are conveniently added through the upper hopper, and the added toothpaste raw materials are guided into the arc-shaped material tube, and then added into the inside of the annular material tube through the arc-shaped material tube. Since the arc-shaped material tube is located inside the annular material tube and does not contact the annular material tube, the feeding operation can be performed without stopping the grinding, which is more convenient and efficient to use;

[0025] S3: At this time, the connecting tube rack and the rotating upper cover rotate around the positive cone shell, and the rotation of the rotating upper cover drives the upper diamond block to rotate, and then the toothpaste raw materials pass through the annular material tube and enter between the rotating upper cover and the positive cone shell through the feeding assembly. Then, because the positive cone shell is a conical structure, the incoming raw materials are gathered from the top periphery of the positive cone shell to the feeding port opened at the bottom under the action of gravity, and because the rotating upper cover and the upper diamond block are in a rotating state, the toothpaste raw materials are crushed by the rapid interlacing of the upper diamond block and the lower diamond block, thereby completing the rough grinding operation, and the raw materials after rough grinding are gathered to the fine grinding position through its structure;

[0026] S4: Then, the connecting rod is rotated synchronously by the connecting pipe rack through the avoidance groove, and the rotation of the connecting rod drives the inner cone grinding cylinder to rotate. When the coarsely ground raw materials are gathered in the material guide pipe, they pass through the gap between the inner cone grinding cylinder and the outer cone grinding cylinder arranged therein. Since the inner cone grinding cylinder is in a high-speed rotating state, spiral extrusion grooves are arranged at the conical surface positions close to the inner cone grinding cylinder and the outer cone grinding cylinder. Therefore, the coarsely ground materials passing through the gap are crushed and ground twice by the spiral extrusion grooves, and the grinding is more sufficient and fine.

[0027] S5: Then the driving assembly drives the second rotating shaft, the rotating frame and the spiral disc bucket to rotate. At this time, the ground raw materials fall from the material guide pipe into the material receiving chamber at the head end of the spiral disc bucket. Then, centrifugal force is generated when the spiral disc bucket rotates. Since the spiral disc bucket is a spirally formed structure with the material receiving chamber as the head end and outward and downward, the horizontal height of the tail end of the spiral disc bucket is lower than the horizontal height of the head end of the spiral disc bucket. Therefore, under the action of centrifugal force and gravity, the ground raw materials in the material receiving chamber move along the spiral direction of the spiral disc bucket toward the tail end position of the spiral disc bucket. In the process of movement, the qualified raw materials fall onto the inverted cone surface through the screening holes opened at the bottom of the spiral disc bucket. Since the inverted cone surface is a slope, the qualified raw materials roll into the material collection chamber under the action of gravity. Then, the material in the material collection chamber is pushed into the discharge pipe by the pushing assembly and discharged. The unqualified raw materials enter the storage hopper set at the tail end of the spiral disc bucket and are collected.

[0028] S6: During the screening process, the rotating frame intermittently contacts and lifts up the protrusions provided on the inverted cone surface while rotating, and under the action of the tension spring 1, the rotating frame is disengaged from the protrusions and moves downward to reset, so that the rotating frame drives the spiral disc bucket to vibrate up and down, thereby effectively avoiding the clogging of the screening holes;

[0029] S7: When taking out the unqualified materials collected in the storage hopper, the position of the storage hopper needs to be positioned by photoelectric sensor 1 and photoelectric sensor 2, so that the storage hopper stops at the specified position. The storage hopper at this position is located directly below the bottom end of the negative pressure suction pipe, and then the cylinder is started, and the cylinder is shortened to drive the slide and the negative pressure suction pipe to move downward along the guide rail, so that the bottom end of the negative pressure suction pipe extends into the storage hopper, and then the end of the negative pressure suction pipe is connected to the negative pressure pump through a bellows, and a negative pressure extraction operation is performed. The extracted unqualified raw materials can be returned to the grinding process, so that the toothpaste raw materials can be fully utilized.

[0030] Compared with the prior art, the present invention provides a grinding and screening device and method for processing toothpaste raw materials, which has the following beneficial effects:

[0031] 1. The present invention adopts a structure in which the spiral disc bucket is spirally formed in an outward and downward direction with the material receiving chamber as the head end, so that under the action of centrifugal force and gravity, the ground raw materials in the material receiving chamber are moved along the spiral direction of the spiral disc bucket toward the tail end position of the spiral disc bucket and the screening operation is completed, so that the requirements of screening accuracy and screening rate can be met while reducing the volume of the equipment.

[0032] 2. The present invention intermittently contacts and lifts up the protrusions provided on the inverted cone surface while the rotating frame rotates, and under the action of a tension spring, the rotating frame is disengaged from the protrusions and moves downward to reset, so that the rotating frame drives the spiral disc bucket to vibrate up and down, thereby effectively avoiding blockage of the screening holes.

[0033] 3. When extracting unqualified raw materials collected in the hopper, the present invention locates the position of the hopper through photoelectric sensor 1 and photoelectric sensor 2, and then extends the bottom end of the negative pressure suction pipe into the hopper to perform negative pressure extraction. The extracted unqualified raw materials can be transferred back to the grinding process, so that the toothpaste raw materials can be fully utilized.

[0034] 4. In the present invention, the raw materials entering are gathered from the top periphery of the positive cone shell to the discharge port opened at the bottom under the action of gravity, and because the rotating upper cover and the upper rhombus block are in a rotating state, the toothpaste raw materials are crushed by the rapid interlacing of the upper rhombus block and the lower rhombus block, thereby completing the rough grinding operation, and the raw materials after rough grinding are gathered to the fine grinding position through its structure.

[0035] 5. The present invention arranges a spiral extrusion groove on the conical surface close to the inner cone grinding cylinder and the outer cone grinding cylinder, so that the coarse grinding material passing through the gap can be secondary crushed and ground through the spiral extrusion groove, and the grinding is more sufficient and fine, and the position of the connecting rod and the inner cone grinding cylinder can be adjusted to complete the adjustment of the particle size accuracy of the raw material fine grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the front three-dimensional structure of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0037] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0038] Figure 3 This is an enlarged structural schematic diagram of a grinding component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0039] Figure 4 A schematic diagram of the internal structure of a grinding component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0040] Figure 5 This is a schematic cross-sectional view of the fine grinding mechanism of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0041] Figure 6 This is a schematic diagram of the decomposed structure of the fine grinding mechanism of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0042] Figure 7 This is a schematic cross-sectional view of the connecting pipe frame of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0043] Figure 8 This is a schematic diagram of the exploded structure of a grinding component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0044] Fig. 9 This is an enlarged structural schematic diagram of a material extraction component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0045] Fig.10 This is an enlarged structural schematic diagram of a screening component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0046] Fig.11 A schematic diagram of the internal structure of a screening component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0047] Fig.12This is a schematic diagram of the bottom cross-sectional structure of a screening component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0048] Fig.13 A schematic diagram of the spiral disc bucket structure of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0049] Fig.14 This is a schematic diagram of the cross-sectional structure of the rotating shaft of a grinding and screening device for processing toothpaste raw materials proposed by the present invention;

[0050] Fig.15 This is a schematic structural diagram of a material pushing component of a grinding and screening device for processing toothpaste raw materials proposed by the present invention.

[0051] In the figure: 1, feeding assembly; 2, frame; 3, table; 4, partition; 5, screening assembly; 6, extraction assembly; 7, grinding assembly; 8, driving assembly; 9, arc-shaped material pipe; 10, upper hopper; 11, support frame; 12, connecting pipe frame; 13, annular material pipe; 14, rotating upper cover; 15, positive cone shell; 16, material guide pipe; 17, upper diamond block; 18, lower diamond block; 19, feeding port; 20, connecting rod; 21, inner cone grinding cylinder; 22, outer cone grinding cylinder; 23, adjusting screw; 24, anti-loosening screw; 25, avoidance groove; 26, photoelectric sensor 1; 27, negative pressure suction pipe; 28, slide; 29, guide Rail; 30, mounting frame 1; 31, cylinder; 32, lower speed reduction pulley 1; 33, rotating shaft 1; 34, mounting frame 2; 35, servo motor; 36, upper acceleration pulley 1; 37, upper acceleration pulley 2; 38, discharge pipe; 39, lower speed reduction pulley 2; 40, rotating shaft 2; 41, inverted cone shell; 42, spiral disc bucket; 43, protrusion; 44, inverted cone surface; 45, material collection cavity; 46, material pushing assembly; 47, rotating frame; 48, material receiving cavity; 49, storage hopper; 50, photoelectric sensor 2; 51, screening hole; 52, sliding cavity; 53, tension spring 1; 54, connecting arm; 55, spring; 56, scraper arm; 57, scraper strip. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Reference Figure 1-Figure 15, a grinding and screening device for processing toothpaste raw materials, including a frame 2, a table 3 and a partition 4 are fixed to the top and inside of the frame 2 by bolts respectively, a grinding assembly 7 and a screening assembly 5 are fixed to the top of the table 3 and the partition 4 by a plurality of legs respectively, and the screening assembly 5 is located directly below the grinding assembly 7 and is connected thereto, a driving assembly 8 is provided on one side of the table 3 for simultaneously driving the grinding assembly 7 and the screening assembly 5 to operate at different speeds, a material extraction assembly 6 is provided inside the table 3 for quickly removing unqualified screening materials in the screening assembly 5, a feeding assembly 1 is provided on the top of the table 3 for continuously feeding the rotating grinding assembly 7, the driving assembly 8 can drive the grinding assembly 7 and the screening assembly 5, and when driving the grinding assembly 7, the rotation is accelerated, while when driving the screening assembly 5, the grinding assembly 7 is rotated at an accelerated speed. When the toothpaste raw material is ground, it enters the grinding component 7 through the feeding component 1, and then the toothpaste raw material is finely ground by the double grinding provided in the grinding component 7, and the diameter of the grinding particles can be adjusted by adjusting the grinding component 7. After the grinding, the toothpaste raw material enters the screening component 5, and is screened by the integrated screening mechanism provided in the screening component 5, and accurate and sufficient screening operations are achieved in a limited space, so that the screening accuracy requirements can be met while reducing the volume of the equipment, and the unqualified raw material particles collected in the screening component 5 can be quickly extracted by negative pressure through the extraction component 6, and then re-entered the grinding process, so that the toothpaste raw material is fully utilized and the cost is saved.

[0054] In order to solve the problems of large volume, large space occupied and low screening efficiency of screening equipment, the screening component 5 in the present invention includes an inverted cone shell 41, which is fixed to the top of the partition 4 by bolts, and the top and bottom of the inverted cone shell 41 are both inverted cone surfaces 44 inclined downward from the inside to the outside, and a material collection cavity 45 is formed between the inverted cone surface 44 and the bottom inner wall of the inverted cone shell 41, and a discharge pipe 38 connected to the material collection cavity 45 is welded to the bottom of the inverted cone shell 41, and a rotating shaft 40 is installed at the bottom of the inverted cone shell 41 through a bearing seat, and a sliding cavity 52 is provided inside the rotating shaft 40, and a rotating frame 47 that moves along its axial direction is provided in the sliding cavity 52 through a key bar and a key groove, and the bottom end of the rotating frame 47 is connected to the rotating shaft 40 through A tension spring 53 is fixed with bolts, a spiral disc 42 is fixed to the top of the rotating frame 47 by bolts, a receiving chamber 48 is provided in the middle of the top of the spiral disc 42, and the receiving chamber 48 is spirally formed in an outward and downward direction, a storage hopper 49 is provided at the tail end of the spiral disc 42, a plurality of screening holes 51 are provided at the bottom of the spiral disc 42, two oppositely distributed protrusions 43 are provided at the top of the inverted cone 44, and the protrusions 43 are intermittently in contact with the rotating frame 47, a pushing assembly 46 is provided on the outer wall of the bottom of the tail end of the spiral disc 42 for pushing the material in the collecting chamber 45 to the discharge pipe 38, and the rotating shaft 40, the rotating frame 47 and the spiral disc 42 are driven to rotate by the driving assembly 8, and the raw materials after grinding fall from the guide pipe 16 to the spiral disc 4 2, and then the spiral bucket 42 generates centrifugal force when it rotates. Since the spiral bucket 42 is a structure that is spirally formed with the material receiving chamber 48 as the head end in an outward and downward direction, the horizontal height of the rear end of the spiral bucket 42 is lower than the horizontal height of the head end of the spiral bucket 42. Therefore, under the action of centrifugal force and gravity, the ground raw materials in the material receiving chamber 48 move along the spiral direction of the spiral bucket 42 toward the rear end of the spiral bucket 42. In the process of movement, the ground raw materials pass through the screening holes 51 opened at the bottom of the spiral bucket 42 and fall onto the inverted cone surface 44. Since the inverted cone surface 44 is a slope, the qualified raw materials roll into the material collection chamber 45 under the action of gravity, and then the material collection chamber 45 is pushed by the pushing assembly 46. The materials are pushed into the discharge pipe 38 and discharged, and the unqualified materials are entered into the storage hopper 49 arranged at the tail end of the spiral disc bucket 42 and collected in the screening process. In order to avoid the clogging of the screening hole 51, the rotating frame 47 intermittently contacts and lifts up the protrusion 43 arranged on the inverted cone surface 44 while rotating, and the rotating frame 47 is disengaged from the protrusion 43 under the action of the tension spring 53 and then moves downward to reset, so that the rotating frame 47 drives the spiral disc bucket 42 to vibrate up and down, thereby effectively avoiding the clogging of the screening hole 51. The pushing assembly 46 includes a connecting arm 54, which is fixed to the outer wall of the bottom end of the spiral disc bucket 42 by bolts, and a scraper arm 56 is slidably connected to one side of the connecting arm 54.The bottom of the scraper arm 56 is detachably connected to a scraper bar 57 that fits the inner wall of the material collection chamber 45 by screws. A spring 55 is fixed between the connecting arm 54 and the scraper arm 56 by bolts. When the spiral disc bucket 42 rotates, the scraper arm 56 and the scraper bar 57 are driven by the connecting arm 54 to push the raw materials in the material collection chamber 45. The spring 55 ensures that the scraper bar 57 is always in contact with the inner wall of the material collection chamber 45 when the spiral disc bucket 42 vibrates up and down.

[0055] In order to solve the problem of how to collect unqualified raw materials due to the retention of unqualified raw materials in the screening component, the extraction component 6 in the present invention includes a mounting frame 30, which is fixed to the inside of the table 3 by bolts, and one side of the mounting frame 30 is fixed with two guide rails 29 by bolts, and a slide 28 is slidably connected between the two guide rails 29 through a slide, and the top of the slide 28 is fixedly connected with a negative pressure suction pipe 27 by a hoop, and the bottom end of the negative pressure suction pipe 27 passes through the inverted cone shell 41 and corresponds to the storage hopper 49, and a photoelectric sensor 250 is fixed to the outer wall of one side of the storage hopper 49 by bolts, and a photoelectric sensor 26 is fixed to the top outer wall of the inverted cone shell 41 by bolts, and the end of the photoelectric sensor 26 passes through the inverted cone shell 41 and corresponds to the photoelectric sensor 250, and one side of the mounting frame 30 is fixed by bolts. There is a cylinder 31, and one end of the piston rod of the cylinder 31 is fixed to the slide 28. Since the position of the storage hopper 49 changes continuously with the rotation of the spiral disc hopper 42, when it is necessary to extract the unqualified raw materials collected in the storage hopper 49, the position of the storage hopper 49 is first located by the photoelectric sensor 1 26 and the photoelectric sensor 2 50, so that the storage hopper 49 stops at the specified position. The storage hopper 49 at this position is located directly below the bottom end of the negative pressure suction pipe 27, and then by starting the cylinder 31, the cylinder 31 shortens and drives the slide 28 and the negative pressure suction pipe 27 to move downward along the guide rail 29, so that the bottom end of the negative pressure suction pipe 27 extends into the storage hopper 49, and then the end of the negative pressure suction pipe 27 is connected to the negative pressure pump through a bellows, and a negative pressure extraction operation is performed. The extracted unqualified raw materials can be transferred back to the grinding process, so that the toothpaste raw materials can be fully utilized.

[0056] In order to solve the problem of low grinding efficiency, the grinding assembly 7 in the present invention includes a positive cone shell 15 and a rotating upper cover 14, the positive cone shell 15 is fixed to the top of the table 3 by bolts, the rotating upper cover 14 rotates on the circumferential outer wall of the positive cone shell 15 and forms a seal on the positive cone shell 15, a rough grinding mechanism is provided between the positive cone shell 15 and the rotating upper cover 14, a feed opening 19 is provided at the bottom of the positive cone shell 15, a feed guide pipe 16 connected to the screening assembly 5 is welded in the feed opening 19, a fine grinding mechanism for secondary grinding of the raw materials ground by the rough grinding mechanism is provided in the feed guide pipe 16, the rough grinding mechanism can perform rough grinding on the toothpaste raw materials, and the rough ground raw materials are then subjected to secondary grinding by the fine grinding mechanism, thereby effectively improving the grinding precision. The coarse grinding mechanism comprises a plurality of upper diamond blocks 17 and a lower diamond block 18, which are respectively fixed to the top inner wall of the rotating upper cover 14 and the bottom inner wall of the positive cone shell 15 by bolts at equal distances. The lengths of the upper diamond blocks 17 and the lower diamond blocks 18 follow the slope of the positive cone shell 15, and the bottom ends of the upper diamond blocks 17 and the top ends of the lower diamond blocks 18 are respectively in contact with the positive cone shell 15 and the rotating upper cover 14. An annular material pipe 13 is welded on the top of the rotating upper cover 14, and a connecting pipe rack 12 is welded in the middle. The connecting pipe rack 12 and the rotating upper cover 14 are driven by the driving component 8 to rotate around the positive cone shell 15. The rotation of the rotating upper cover 14 drives the upper diamond blocks 17 to rotate, and then the toothpaste raw material is made to rotate by the feeding component 1. The material passes through the annular material pipe 13 and enters between the rotating upper cover 14 and the positive cone shell 15. Then, because the positive cone shell 15 is a cone structure, the entered raw materials are gathered from the top periphery of the positive cone shell 15 to the discharge port 19 opened at the bottom under the action of gravity. Since the rotating upper cover 14 and the upper diamond block 17 are in a rotating state, the toothpaste raw materials are crushed by the rapid interlacing of the upper diamond block 17 and the lower diamond block 18, thereby completing the rough grinding operation, and the raw materials after rough grinding are gathered to the fine grinding position through its structure. The feeding assembly 1 includes a support frame 11, which is fixed to the top of the table 3 by bolts. The top of the support frame 11 is fixed with an upper hopper 10 by bolts, and the bottom end of the upper hopper 10 is welded with an arc-shaped material pipe 9, the bottom end of the arc-shaped material tube 9 is inserted into the inside of the annular material tube 13, and the toothpaste raw materials to be ground are conveniently added through the upper hopper 10, and the added toothpaste raw materials are guided into the arc-shaped material tube 9, and then added into the inside of the annular material tube 13 through the arc-shaped material tube 9. Since the arc-shaped material tube 9 is located in the annular material tube 13 and does not contact the annular material tube 13, the feeding operation can be performed without stopping the grinding, which is more convenient and efficient to use. The fine grinding mechanism includes an outer cone grinding cylinder 22 and a connecting rod 20, and the outer cone grinding cylinder 22 is welded to the circumferential inner wall of the guide tube 16. A avoidance groove 25 is opened inside the connecting rod 20, and the connecting rod 20 is slidably connected to the connecting pipe frame 12 through the avoidance groove 25. The bottom end of the connecting rod 20 is welded with an inner cone grinding cylinder 21.A spiral extrusion groove is provided at the conical surface position where the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22 are close to each other. A gap is left between the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22, and this gap gradually decreases from top to bottom. An adjustment component for adjusting the gap size between the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22 is provided between the connecting pipe frame 12 and the connecting rod 20. The adjustment component includes an adjusting screw 23, and the adjusting screw 23 is threadedly connected to the threaded hole opened at the top of the connecting rod 20. The bottom end of the adjusting screw 23 is rotatably connected to the top of the connecting pipe frame 12. A side threaded hole is provided on one side of the connecting pipe frame 12, and a locking screw 24 for squeezing the connecting rod 20 is threadedly connected in the side threaded hole. As the connecting pipe frame 12 rotates through the avoidance groove 25, the connecting rod 20 is rotated synchronously, and the rotation of the connecting rod 20 drives the inner cone grinding cylinder 21 to rotate. When the raw material after rough grinding The raw materials are gathered into the guide tube 16, and then pass through the gap between the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22. Since the inner cone grinding cylinder 21 is in a high-speed rotating state, and the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22 are close to each other, spiral extrusion grooves are provided. Therefore, the coarse grinding materials passing through the gap are crushed and ground twice by the spiral extrusion grooves, and the grinding is more sufficient and fine. At the same time, by rotating the adjusting screw 23, the adjusting screw 23 drives the connecting rod 20 to move along its axial direction. Therefore, the movement of the connecting rod 20 drives the inner cone grinding cylinder 21 to move and adjust the gap between the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22. After the adjustment is completed, the anti-loosening screw 24 is rotated to make the anti-loosening screw 24 squeeze and fix the connecting rod 20, thereby completing the adjustment of the particle size accuracy of the fine grinding of the raw material.

[0057] In order to meet the different speed requirements of the grinding process and the screening process, the driving component 8 in the present invention includes a mounting frame 34, the mounting frame 34 is fixed to the top of the table 3 by bolts, the interior of the mounting frame 34 is rotatably connected to a rotating shaft 33 through a bearing, the top and bottom ends of the rotating shaft 33 are respectively keyed to an upper acceleration pulley 36 and a lower reduction pulley 32, an upper acceleration pulley 37 is fixed to the outer side of the circumference of the connecting pipe rack 12 by bolts, and the upper acceleration pulley 37 is connected to the upper acceleration pulley 36 by a synchronous belt drive, and the bottom end of the rotating shaft 40 is fixed to a lower reduction pulley 39 by bolts, and the lower reduction pulley 39 is connected to the lower reduction pulley 32 by a synchronous belt. Transmission connection, a servo motor 35 is fixed to one side of the mounting frame 34 by bolts, one end of the output shaft of the servo motor 35 and one side of the rotating shaft 33 are both provided with a synchronous pulley, and the two synchronous pulleys are connected by a synchronous belt transmission. By starting the servo motor 35, the servo motor 35 rotates and drives the rotating shaft 33 to rotate through the synchronous pulley. The rotating shaft 33 rotates through the upper acceleration pulley 1 36 to make the upper acceleration pulley 2 37 drive the connecting pipe rack 12 to accelerate the rotation, thereby realizing the high-speed grinding requirement of the grinding component 7. At the same time, the rotating shaft 33 rotates through the lower reduction pulley 1 32 to make the lower reduction pulley 2 39 drive the rotating shaft 2 40 to decelerate the rotation, thereby realizing the low speed requirement of the screening component 5.

[0058] A grinding and screening method for processing toothpaste raw materials, comprising the following steps:

[0059] S1: First, the servo motor 35 is started, and the servo motor 35 rotates to drive the rotating shaft 1 33 to rotate through the synchronous pulley, and the rotating shaft 1 33 rotates through the upper acceleration pulley 1 36 to make the upper acceleration pulley 2 37 drive the connecting pipe rack 12 to accelerate, thereby realizing the high-speed grinding requirement of the grinding component 7, and at the same time, the rotating shaft 1 33 rotates through the lower reduction pulley 1 32 to make the lower reduction pulley 2 39 drive the rotating shaft 2 40 to decelerate, thereby realizing the low speed requirement of the screening component 5;

[0060] S2: Then, the toothpaste raw materials to be ground are conveniently added through the upper hopper 10, and the added toothpaste raw materials are guided into the arc-shaped material tube 9, and then added into the inside of the annular material tube 13 through the arc-shaped material tube 9. Since the arc-shaped material tube 9 is located in the annular material tube 13 and does not contact the annular material tube 13, the feeding operation can be performed without stopping the grinding, which is more convenient and efficient to use;

[0061] S3: At this time, the connecting tube frame 12 and the rotating upper cover 14 rotate around the positive cone shell 15, and the rotation of the rotating upper cover 14 drives the upper diamond block 17 to rotate, and then the toothpaste raw materials pass through the annular material tube 13 through the feeding component 1 to enter between the rotating upper cover 14 and the positive cone shell 15, and then because the positive cone shell 15 is a conical structure, the entered raw materials are gathered from the top periphery of the positive cone shell 15 to the discharge port 19 opened at the bottom under the action of gravity, and because the rotating upper cover 14 and the upper diamond block 17 are in a rotating state, the toothpaste raw materials are crushed by the rapid interlacing of the upper diamond block 17 and the lower diamond block 18, thereby completing the rough grinding operation, and the raw materials after rough grinding are gathered to the fine grinding position through its structure;

[0062] S4: Then, the connecting rod 20 is rotated synchronously due to the rotation of the connecting pipe frame 12 through the avoidance groove 25, and the rotation of the connecting rod 20 drives the inner cone grinding cylinder 21 to rotate. When the roughly ground raw materials are gathered in the guide tube 16, they pass through the gap between the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22 arranged therein. Since the inner cone grinding cylinder 21 is in a high-speed rotating state, and the conical surface positions of the inner cone grinding cylinder 21 and the outer cone grinding cylinder 22 are both provided with spiral extrusion grooves, the roughly ground materials passing through the gap are crushed and ground twice by the spiral extrusion grooves, and the grinding is more sufficient and fine.

[0063] S5: Then, the drive assembly 8 drives the rotating shaft 2 40, the rotating frame 47 and the spiral disc bucket 42 to rotate. At this time, the ground raw materials fall from the guide pipe 16 into the receiving cavity 48 at the head end of the spiral disc bucket 42. Then, the spiral disc bucket 42 generates centrifugal force when rotating. Since the spiral disc bucket 42 is spirally formed with the receiving cavity 48 as the head end and in an outward and downward direction, the horizontal height of the rear end of the spiral disc bucket 42 is lower than the horizontal height of the head end of the spiral disc bucket 42. Therefore, under the action of centrifugal force and gravity, the ground raw materials in the receiving cavity 48 are The raw materials move along the spiral direction of the spiral disc bucket 42 toward the tail end of the spiral disc bucket 42. During the movement, the qualified raw materials fall onto the inverted cone surface 44 through the screening holes 51 provided at the bottom of the spiral disc bucket 42. Since the inverted cone surface 44 is a slope, the qualified raw materials roll into the material collection cavity 45 under the action of gravity. Then, the materials in the material collection cavity 45 are pushed into the discharge pipe 38 by the material pushing assembly 46 and discharged. The unqualified raw materials enter the storage hopper 49 provided at the tail end of the spiral disc bucket 42 and are collected.

[0064] S6: During the screening process, the rotating frame 47 intermittently contacts and lifts up the protrusion 43 provided on the inverted cone surface 44 while rotating, and under the action of the tension spring 53, the rotating frame 47 is disengaged from the protrusion 43 and moves downward to reset, so that the rotating frame 47 drives the spiral disc bucket 42 to vibrate up and down, thereby effectively avoiding the clogging of the screening hole 51;

[0065] S7: When taking out the unqualified materials collected in the storage hopper 49, the position of the storage hopper 49 needs to be positioned by photoelectric sensor 1 26 and photoelectric sensor 2 50, so that the storage hopper 49 stops at the specified position. The storage hopper 49 at this position is located directly below the bottom end of the negative pressure suction pipe 27, and then the cylinder 31 is started, and the cylinder 31 is shortened to drive the slide 28 and the negative pressure suction pipe 27 to move downward along the guide rail 29, so that the bottom end of the negative pressure suction pipe 27 extends into the storage hopper 49, and then the end of the negative pressure suction pipe 27 is connected to the negative pressure pump through a bellows, and a negative pressure extraction operation is performed. The extracted unqualified raw materials can be returned to the grinding process, so that the toothpaste raw materials can be fully utilized.

[0066] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0067] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding and screening device for processing toothpaste raw materials, comprising a frame, characterized in that: The top and the inside of the frame are respectively fixedly connected with a table and a partition, the top of the table and the partition are respectively fixed with a grinding assembly and a screening assembly through a plurality of legs, and the screening assembly is located directly below the grinding assembly and is connected thereto, one side of the table is provided with a driving assembly for simultaneously driving the grinding assembly and the screening assembly to operate at different speeds, the inside of the table is provided with a drawing assembly for quickly taking out unqualified screening materials in the screening assembly, and the top of the table is provided with a feeding assembly for continuously feeding the rotating grinding assembly; The screening assembly includes an inverted cone-shaped shell, which is fixedly connected to the top of the partition, and the top and bottom of the inverted cone-shaped shell are both inverted cone surfaces inclined downward from the inside to the outside, and a material collection cavity is formed between the inverted cone surface at the bottom of the inverted cone-shaped shell and the bottom inner wall of the inverted cone-shaped shell. A discharge pipe connected to the material collection cavity is fixedly connected to the bottom of the inverted cone-shaped shell. A rotating shaft 2 is installed at the bottom of the inverted cone-shaped shell through a bearing seat, and a sliding cavity is opened inside the rotating shaft 2. A rotating frame that moves along its axial direction is provided in the sliding cavity through a key bar and a key groove, and the rotating frame A tension spring 1 is fixedly connected between the bottom end and the rotating shaft 2, a spiral disc bucket is fixedly connected to the top of the rotating frame, a material receiving chamber is provided in the middle position of the top of the spiral disc bucket, and the spiral is formed in an outward and downward direction with the material receiving chamber as the head end, a storage hopper is provided at the tail end of the spiral disc bucket, and a plurality of screening holes are provided at the bottom of the spiral disc bucket, two oppositely distributed protrusions are provided at the top of the inverted cone surface at the bottom of the inverted cone shell, and the protrusions are in intermittent contact with the rotating frame, and a pushing component is provided on the outer wall of the bottom of the tail end of the spiral disc bucket for pushing the material in the collecting chamber to the discharge pipe; The material extraction assembly includes a mounting frame 1, which is fixedly connected to the inside of the table top, one side of the mounting frame 1 is fixedly connected to two guide rails, a slide is slidably connected between the two guide rails through a slide, the top of the slide is fixedly connected to a negative pressure suction pipe through a clamp, and the bottom end of the negative pressure suction pipe passes through an inverted cone shell and corresponds to the material storage hopper, one side outer wall of the material storage hopper is fixedly connected to a photoelectric sensor 2, the top outer wall of the inverted cone shell is fixedly connected to a photoelectric sensor 1, and one end of the photoelectric sensor passes through the inverted cone shell and corresponds to the photoelectric sensor 2, one side of the mounting frame 1 is fixedly connected to a cylinder, and one end of the cylinder piston rod is fixed to the slide.

2. A grinding and screening equipment for processing toothpaste raw materials according to claim 1, characterized in that: The pushing assembly includes a connecting arm, which is fixedly connected to the outer wall of the bottom end of the spiral disc bucket. A scraper arm is slidably connected to one side of the connecting arm. The bottom of the scraper arm is detachably connected to a scraper strip that fits the inner wall of the material collection chamber by a screw. A spring is fixedly connected between the connecting arm and the scraper arm.

3. A grinding and screening equipment for processing toothpaste raw materials according to claim 2, characterized in that: The grinding assembly includes a positive cone shell and a rotating upper cover. The positive cone shell is fixedly connected to the top of the table. The rotating upper cover rotates on the circumferential outer wall of the positive cone shell and forms a closure on the positive cone shell. A coarse grinding mechanism is provided between the positive cone shell and the rotating upper cover. A discharge port is provided at the bottom of the positive cone shell. A material guide pipe connected to the screening assembly is fixedly connected in the discharge port. A fine grinding mechanism for secondary grinding of the raw materials ground by the coarse grinding mechanism is provided in the material guide pipe.

4. A grinding and screening equipment for processing toothpaste raw materials according to claim 3, characterized in that: The coarse grinding mechanism includes a plurality of upper diamond blocks and a lower diamond block, which are respectively and equidistantly fixedly connected to the top inner wall of the rotating upper cover and the bottom inner wall of the positive cone shell. The lengths of the upper diamond blocks and the lower diamond blocks follow the slope of the positive cone shell, and the bottom ends of the upper diamond blocks and the top ends of the lower diamond blocks are in contact with the positive cone shell and the rotating upper cover respectively. An annular material pipe is fixedly connected to the top of the rotating upper cover and a connecting pipe rack is fixedly connected in the middle position.

5. A grinding and screening equipment for processing toothpaste raw materials according to claim 4, characterized in that: The fine grinding mechanism includes an outer cone grinding cylinder and a connecting rod. The outer cone grinding cylinder is fixedly connected to the circumferential inner wall of the material guide tube. A avoidance groove is provided inside the connecting rod, and the connecting rod is slidably connected to the connecting pipe frame through the avoidance groove. The bottom end of the connecting rod is fixedly connected to the inner cone grinding cylinder. Spiral extrusion grooves are provided at the conical surface positions where the inner cone grinding cylinder and the outer cone grinding cylinder are close. A gap is left between the inner cone grinding cylinder and the outer cone grinding cylinder, and the gap gradually decreases from top to bottom. An adjusting component for adjusting the gap size between the inner cone grinding cylinder and the outer cone grinding cylinder is provided between the connecting pipe frame and the connecting rod. The adjusting component includes an adjusting screw, which is threadedly connected to a threaded hole provided at the top of the connecting rod. The bottom end of the adjusting screw is rotatably connected to the top of the connecting pipe frame. A side threaded hole is provided on one side of the connecting pipe frame. A locking screw for squeezing the connecting rod is threadedly connected in the side threaded hole.

6. A grinding and screening equipment for processing toothpaste raw materials according to claim 5, characterized in that: The feeding assembly includes a support frame, which is fixedly connected to the top of the table, the top of the support frame is fixedly connected to a feeding hopper, the bottom end of the feeding hopper is fixedly connected to an arc-shaped feeding pipe, and the bottom end of the arc-shaped feeding pipe is inserted into the interior of the annular feeding pipe.

7. A grinding and screening equipment for processing toothpaste raw materials according to claim 6, characterized in that: The driving assembly includes a mounting frame 2, which is fixedly connected to the top of the table top, and the interior of the mounting frame 2 is rotatably connected to a rotating shaft 1 through a bearing, and the top and bottom ends of the rotating shaft 1 are respectively keyed to an upper acceleration pulley 1 and a lower reduction pulley 1, and an upper acceleration pulley 2 is fixedly connected to the circumferential outer side of the connecting pipe rack, and the upper acceleration pulley 2 is connected to the upper acceleration pulley 1 through a synchronous belt transmission, and the bottom end of the rotating shaft 2 is fixedly connected to a lower reduction pulley 2, and the lower reduction pulley 2 is connected to the lower reduction pulley 1 through a synchronous belt transmission, and a servo motor is fixedly connected to one side of the mounting frame 2, and one end of the servo motor output shaft and one side of the rotating shaft 1 are both provided with synchronous pulleys, and the two synchronous pulleys are connected through a synchronous belt transmission.

8. A grinding and screening method for a grinding and screening device for processing toothpaste raw materials according to claim 7, characterized in that: It includes the following steps: S1: First, the servo motor is started, and the servo motor rotates to drive the rotating shaft 1 through the synchronous pulley, and the rotating shaft 1 rotates through the upper acceleration pulley 1 to drive the upper acceleration pulley 2 to drive the connecting pipe rack to rotate faster, thereby realizing the high-speed grinding requirement of the grinding component, and at the same time, the rotating shaft 1 rotates through the lower reduction pulley 1 to drive the lower reduction pulley 2 to rotate slower, thereby realizing the low speed requirement of the screening component; S2: Then, the toothpaste raw materials to be ground are conveniently added through the upper hopper, and the added toothpaste raw materials are guided into the arc-shaped material tube, and then added into the inside of the annular material tube through the arc-shaped material tube. Since the arc-shaped material tube is located inside the annular material tube and does not contact the annular material tube, the feeding operation can be performed without stopping the grinding, which is more convenient and efficient to use; S3: At this time, the connecting tube rack and the rotating upper cover rotate around the positive cone shell, and the rotation of the rotating upper cover drives the upper diamond block to rotate, and then the toothpaste raw materials pass through the annular material tube and enter between the rotating upper cover and the positive cone shell through the feeding assembly. Then, because the positive cone shell is a conical structure, the incoming raw materials are gathered from the top periphery of the positive cone shell to the feeding port opened at the bottom under the action of gravity, and because the rotating upper cover and the upper diamond block are in a rotating state, the toothpaste raw materials are crushed by the rapid interlacing of the upper diamond block and the lower diamond block, thereby completing the rough grinding operation, and the raw materials after rough grinding are gathered to the fine grinding position through its structure; S4: Then, the connecting rod is rotated synchronously by the connecting pipe rack through the avoidance groove, and the rotation of the connecting rod drives the inner cone grinding cylinder to rotate. When the coarsely ground raw materials are gathered in the material guide pipe, they pass through the gap between the inner cone grinding cylinder and the outer cone grinding cylinder arranged therein. Since the inner cone grinding cylinder is in a high-speed rotating state, spiral extrusion grooves are arranged at the conical surface positions close to the inner cone grinding cylinder and the outer cone grinding cylinder. Therefore, the coarsely ground materials passing through the gap are crushed and ground twice by the spiral extrusion grooves, and the grinding is more sufficient and fine. S5: Then the driving assembly drives the second rotating shaft, the rotating frame and the spiral disc bucket to rotate. At this time, the ground raw materials fall from the material guide pipe into the material receiving chamber at the head end of the spiral disc bucket. Then, centrifugal force is generated when the spiral disc bucket rotates. Since the spiral disc bucket is a spirally formed structure with the material receiving chamber as the head end and outward and downward, the horizontal height of the tail end of the spiral disc bucket is lower than the horizontal height of the head end of the spiral disc bucket. Therefore, under the action of centrifugal force and gravity, the ground raw materials in the material receiving chamber move along the spiral direction of the spiral disc bucket toward the tail end position of the spiral disc bucket. In the process of movement, the qualified raw materials fall onto the inverted cone surface through the screening holes opened at the bottom of the spiral disc bucket. Since the inverted cone surface is a slope, the qualified raw materials roll into the material collection chamber under the action of gravity. Then, the material in the material collection chamber is pushed into the discharge pipe by the pushing assembly and discharged. The unqualified raw materials enter the storage hopper set at the tail end of the spiral disc bucket and are collected. S6: During the screening process, the rotating frame intermittently contacts and lifts up the protrusions provided on the inverted cone surface while rotating, and under the action of the tension spring 1, the rotating frame is disengaged from the protrusions and moves downward to reset, so that the rotating frame drives the spiral disc bucket to vibrate up and down, thereby effectively avoiding the clogging of the screening holes; S7: When taking out the unqualified materials collected in the storage hopper, the position of the storage hopper needs to be positioned by photoelectric sensor 1 and photoelectric sensor 2, so that the storage hopper stops at the specified position. The storage hopper at this position is located directly below the bottom end of the negative pressure suction pipe, and then the cylinder is started, and the cylinder is shortened to drive the slide and the negative pressure suction pipe to move downward along the guide rail, so that the bottom end of the negative pressure suction pipe extends into the storage hopper, and then the end of the negative pressure suction pipe is connected to the negative pressure pump through a bellows, and a negative pressure extraction operation is performed. The extracted unqualified raw materials can be returned to the grinding process, so that the toothpaste raw materials can be fully utilized.

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