A static discharging sand mill

Abstract

The present invention belongs to the technical field of sand mills, and specifically is a static discharging sand mill, comprising a base, a permanent magnet motor is installed on one side of the top of the base, a grinding cylinder is installed on the other side of the top of the base, a grinding roller is rotatably connected inside the grinding cylinder, a main shaft is fixed on the side of the permanent magnet motor close to the grinding cylinder, a feed pipe is arranged on the side of the main grinding cylinder close to the permanent magnet motor, a conveying pipe is fixed on the top of the feed pipe, and a gathering structure is fixed on the top of the conveying pipe; large-particle solid materials in the solid-liquid mixture can be filtered through a filter plate, and the large-particle solid materials can be collected through a collecting box, an electric telescopic rod drives a pressure plate to rise and fall to crush the large-particle solid materials inside the collecting box, and the liquid materials flow inside the collecting box and the conveying pipe under the driving of the lifting and falling of the pressure plate, so as to take away the crushed materials, thereby facilitating the processing of large-particle solid materials and reducing the time consumed by grinding rollers.

Description

Technical Field

[0001] The invention belongs to the technical field of sand mills, in particular to a static discharging sand mill. Background Art

[0002] A sand mill is a device used to grind liquid products such as paints, inks, pigments, pesticides, etc. During the use of the sand mill, the grinding parts inside the grinding cylinder rotate and come into contact with the solid particles inside the material. The grinding parts collide, rub and shear with the solid material multiple times to disperse the solid material, so that the solid material can be fully and evenly mixed with the liquid material.

[0003] When an existing sand mill is in use, the motor needs a transmission part to transmit the power for grinding. During the transmission process of the transmission part, part of the power will be consumed, which will affect the grinding efficiency of the sand mill and increase the energy consumption during grinding. During the material input process, the liquid material will contain some solid materials with larger particles. The solid materials with larger particles are easy to be blocked at the outlet, and it will take longer to grind than the materials with smaller particles. It is easy for solid particles to still exist after other materials are ground, affecting the grinding effect.

[0004] To this end, the present invention provides a static discharging sand mill. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a static discharging sand mill described in the present invention includes a base, a permanent magnet motor is installed on one side of the top of the base, a grinding cylinder is installed on the other side of the top of the base, a grinding roller is rotatably connected inside the grinding cylinder, a discharge port is arranged on the side of the grinding cylinder away from the permanent magnet motor, a main shaft is fixed on the side of the permanent magnet motor close to the grinding cylinder, an end of the main shaft away from the permanent magnet motor is fixedly connected to one end of the grinding roller, a feed pipe is arranged on the side of the grinding cylinder close to the permanent magnet motor, a conveying pipe is fixed on the top of the feed pipe, an end of the conveying pipe away from the feed pipe is connected to the inside of the grinding cylinder, and a collection structure is fixed on the top of the conveying pipe; the collection structure includes a collecting box fixed on the top of the conveying pipe, a filter plate is arranged inside the conveying pipe, and the filter plate is located inside the conveying pipe near the opening of the collecting box.

[0007] Preferably, a mesh plate is fixed at the bottom end of the collecting box, an electric telescopic rod is installed at the top end of the collecting box, a pressure plate is provided at the bottom end of the electric telescopic rod, and a pressure sensor is fixed on one side of the filter plate.

[0008] Preferably, a flip plate is hinged on one side of the mesh plate, a limiting block is fixed on the top of the flip plate close to the mesh plate, the other side of the pressure sensor is fixedly connected to the inner wall of the feed pipe, a sealing ring is provided on the outer sleeve of the pressure plate, the sealing ring is tightly attached to the inner wall of the feed pipe, support plates are arranged on both sides below the flip plate, and the support plates are fixedly connected to the collection box.

[0009] Preferably, a plurality of crushing balls are rotatably connected inside the pressure plate, a rotation groove for the crushing balls to rotate is provided inside the pressure plate, and the bottom ends of the crushing balls extend below the rotation groove.

[0010] Preferably, a lifting column is fixed to the bottom end of the electric telescopic rod, a lifting plate is fixed to the bottom end of the lifting column, a rotating shell is fixed to the top end of the pressure plate, the lifting column passes through the top end of the rotating shell, the lifting plate is arranged inside the rotating shell, the lifting plate forms a rotating structure inside the rotating shell, a gear ring is fixed to the top end of the rotating shell, a plurality of supporting gears are equidistantly arranged between the inner side of the gear ring and the outer side of the lifting column, the bottom end of the supporting gear is rotatably connected to the rotating shell, the supporting gear is meshed with the gear ring, a steering motor is installed on one side of the lifting column, and the end of the rotating shaft of the steering motor is fixedly connected to the top end of one of the supporting gears.

[0011] Preferably, a plurality of slots are provided at the bottom end of the lifting plate, a plurality of protrusions are fixed at the bottom end inside the rotating shell, a snap-fit ​​structure can be formed between the slots and the protrusions, a support ring is provided above the lifting plate, a spring is fixed between the lifting plate and the support ring, and the support ring is provided inside the rotating shell.

[0012] Preferably, a scraper bar is fixed to the bottom end of the pressing plate, and a plurality of scrapers are arranged at equal intervals at the bottom end of the pressing plate, and the height of the scraper bar is equal to the extended length of the crushing ball.

[0013] Preferably, the crushing balls are divided into multiple groups inside the pressure plate, and each group of crushing balls is connected by a connecting rod.

[0014] Preferably, a bevel gear is fixed to one end of the connecting rod near the inner side of the collecting box, and a transmission rod is rotatably connected to the side of the pressure plate near the bevel gear. A bevel gear is also fixed to the bottom end of the transmission rod. The two bevel gears are meshingly connected, and a transverse rotating wheel is fixed to the top of the transmission rod.

[0015] Preferably, a plurality of rotating holes are provided at equal intervals on the outer side of the horizontal rotating wheel, and the interior of the rotating holes is rotatably connected to the vertical rotating wheel.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The static discharging sand mill described in the present invention can filter large-particle solid materials in the solid-liquid mixture through the filter plate, and collect the large-particle solid materials through the collecting box. The electric telescopic rod drives the pressure plate to rise and fall to crush the large-particle solid materials in the collecting box, and the liquid material flows in the collecting box and the feed pipe under the driving of the lifting of the pressure plate, and the crushed material can be taken away, so as to facilitate the processing of large-particle solid materials and reduce the time consumed by the grinding roller.

[0018] 2. The static discharging sand mill described in the present invention can crush solid materials through crushing balls, and the rolling of the crushing balls can further crush the solid materials. During the crushing process, the crushing balls are actively rolled by the transverse rotating wheel, and the crushing balls scrape off the solid materials adhered to the surface of the pressure plate through the edge of the rotating groove inside the pressure plate to prevent the adhered solid materials from affecting subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the pressing plate in the present invention in a pressing state;

[0023] Figure 4 It is a schematic diagram of the lifting state of the pressing plate in the present invention;

[0024] Figure 5 It is a schematic diagram of the mesh plate structure in the present invention;

[0025] Figure 6 It is a schematic diagram of the pressing plate structure in the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure of the rotating shell in the present invention;

[0027] Figure 8 It is a schematic diagram of the internal structure of the pressing plate in the present invention;

[0028] Fig. 9 It is a schematic diagram of the transmission rod structure in the present invention.

[0029] In the figure: 1, base; 2, permanent magnet motor; 21, main shaft; 3, grinding cylinder; 31, grinding roller; 32, discharge port; 4, feed pipe; 41, conveying pipe; 5, collecting box; 51, filter plate; 511, pressure sensor; 52, mesh plate; 521, flip plate; 522, limit block; 523, support plate; 53, electric telescopic rod; 531, lifting column; 532, lifting plate; 533, slot; 534, steering motor; 535, support gear; 536, spring; 537, support ring; 54, pressure plate; 541, sealing ring; 542, scraper; 543, rotating shell; 544, bump; 545, gear ring; 55, breaking ball; 551, connecting rod; 552, transmission rod; 553, horizontal rotating wheel; 554, vertical rotating wheel. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 3 As shown, a static discharging sand mill described in an embodiment of the present invention comprises a base 1, a permanent magnet motor 2 is installed on one side of the top of the base 1, a grinding cylinder 3 is installed on the other side of the top of the base 1, a grinding roller 31 is rotatably connected inside the grinding cylinder 3, a discharge port 32 is arranged on the side of the grinding cylinder 3 away from the permanent magnet motor 2, a main shaft 21 is fixed on the side of the permanent magnet motor 2 close to the grinding cylinder 3, an end of the main shaft 21 away from the permanent magnet motor 2 is fixedly connected to one end of the grinding roller 31, a feeding pipe 4 is arranged on the side of the grinding cylinder 3 close to the permanent magnet motor 2, a conveying pipe 41 is fixed on the top of the feeding pipe 4, an end of the conveying pipe 41 away from the feeding pipe 4 is connected to the inside of the grinding cylinder 3, and a material collecting structure is fixed on the top of the conveying pipe 41; the material collecting structure comprises a collecting box 5 fixed on the top of the conveying pipe 41, a filter plate 51 is arranged inside the conveying pipe 41, and the filter plate 51 is located inside the conveying pipe 41 near the opening of the collecting box 5;

[0032] In the processing of liquid products such as paints, inks, pigments, pesticides, etc., in order to make the internal materials more uniform, it is necessary to grind the solid materials inside. During grinding, the materials to be ground are drawn into the feed pipe 4, and the materials enter the feed pipe 4 and are input into the grinding cylinder 3 through the delivery pipe 41. In the process of the materials passing through the delivery pipe 41, the materials will pass through the filter plate 51, and the liquid materials will continue to be output through the holes on the surface of the filter plate 51. At the same time, solid materials with smaller particles will also be output through the holes, while materials with larger particles will be blocked on the surface of the filter plate 51. The flow will send the larger particles of materials into the collecting box 5, and the collecting box 5 can collect the larger particles of materials. After the materials are input into the grinding cylinder 3, the permanent magnet motor 2 is started to drive the main shaft 21 to rotate, and the main shaft 21 drives the grinding roller 31 to rotate inside the grinding cylinder 3. The grinding roller 31 can grind the materials, and the ground materials are output to the outside through the grinding roller 31. The permanent magnet motor 2 adopts a permanent magnet motor, which has a higher energy efficiency ratio and lower energy consumption than the motor of the traditional sand mill. The permanent magnet motor 2 directly drives the main shaft 21, eliminates the transmission of the pulley and the V-belt, and reduces the kinetic energy consumption of the transmission process.

[0033] like Figures 2 to 4 As shown, a mesh plate 52 is fixed at the bottom end of the collecting box 5, an electric telescopic rod 53 is installed at the top end of the collecting box 5, a pressing plate 54 is provided at the bottom end of the electric telescopic rod 53, and a pressure sensor 511 is fixed on one side of the filter plate 51;

[0034] In the initial state, the electric telescopic rod 53 extends to its maximum length and drives the pressing plate 54 to move to a position close to the mesh plate 52. After the solid material is filtered on the surface of the filter plate 51, its surface resistance will increase. Therefore, the pressure value of the pressure sensor 511 behind the filter plate 51 will change. When the pressure value of the pressure sensor 511 reaches a preset range, it is necessary to collect the materials with larger particles filtered on the surface of the filter plate 51 into the interior of the collection box 5, and the electric telescopic rod 53 is started to contract. At this time, the electric telescopic rod 53 drives the pressing plate 54 to move upward. At this time, the pressing plate 54 can draw a part of the liquid material flowing through the feed pipe 41 into the interior of the collection box 5. At the same time, the materials with larger particles filtered by the filter plate 51 will also enter the interior of the collection box 5. Then the electric telescopic rod 53 is started to drive the pressing plate 54 to press down. At this time, the pressing plate 54 can press the solid particles to the surface of the mesh plate 52. At this time, the solid particles can be crushed, and the outer diameter of the crushed solid particles becomes smaller, which can be more convenient for the grinding roller 31 to grind.

[0035] like Figures 3 to 5As shown, a flip plate 521 is hinged on one side of the mesh plate 52, a limit block 522 is fixed on the top of the flip plate 521 close to the mesh plate 52, the other side of the pressure sensor 511 is fixedly connected to the inner wall of the feeding pipe 41, a sealing ring 541 is sleeved on the outside of the pressure plate 54, and the sealing ring 541 is close to the inner wall of the feeding pipe 41, and the support plates 523 are arranged on both sides below the flip plate 521, and the support plates 523 are fixedly connected to the collection box 5;

[0036] When the electric telescopic rod 53 drives the pressing plate 54 to press down, liquid and solid materials may be discharged from the feed port, and the crushing operation cannot be performed. Therefore, a flip plate 521 is provided. When the pressing plate 54 rises to extract materials, a small portion of the liquid materials is sucked into the collecting box 5 from the holes of the mesh plate 52, and most of the remaining solid-liquid mixed materials enter the collecting box 5 from one side of the flip plate 521. Pushed by the materials, the flip plate 521 flips upward. At this time, the solid-liquid mixed materials enter the collecting box 5 through the gap of the flip plate 521. When the flip plate 521 flips, the limit block 522 limits the flip plate 521, so that the flip angle of the flip plate 521 is less than 90°. Then, the electric telescopic rod 53 is used to push the flip plate 521 upward. The rod 53 drives the pressure plate 54 to press down, and the flip plate 521 flips in the opposite direction under the push of the liquid material inside the collection box 5. At this time, the support plate 523 will support the bottom of the flip plate 521, and then the liquid material can only be output through the holes of the mesh plate 52. At the same time, the mesh plate 52 and the flip plate 521 can support the solid material when the pressure plate 54 is pressed down, and can crush the solid material inside the collection box 5. When the liquid material is discharged from the holes of the mesh plate 52, the crushed solid material will be discharged back to the inside of the feed pipe 41 at the same time, which can achieve the crushing of solid materials with larger particles and reduce the subsequent grinding time. The sealing ring 541 can make the pressure plate 54 fit tightly against the inner wall of the collection box 5 to prevent the electric telescopic rod 53 from contacting the material.

[0037] like Figure 3 to Figure 4 As shown, a plurality of crushing balls 55 are rotatably connected inside the pressure plate 54, and a rotation groove for the crushing balls 55 to rotate is opened inside the pressure plate 54, and the bottom end of the crushing ball 55 extends to the bottom of the rotation groove;

[0038] When the pressing plate 54 descends to crush the solid materials on the top of the mesh plate 52 and the flip plate 521, a crushing ball 55 is arranged inside the pressing plate 54 to contact the solid materials. The solid materials can be crushed by the crushing ball 55, which can prevent the solid materials from being pressed into a round cake shape and being unable to be discharged from the inside of the collecting box 5. At the same time, the crushing ball 55 will reserve a certain space between the pressing plate 54 and the mesh plate 52 and the flip plate 521, so that the incompletely crushed solid materials can be retained.

[0039] like Figures 3 to 7As shown, a lifting column 531 is fixed to the bottom end of the electric telescopic rod 53, a lifting plate 532 is fixed to the bottom end of the lifting column 531, a rotating shell 543 is fixed to the top end of the pressing plate 54, the lifting column 531 passes through the top end of the rotating shell 543, the lifting plate 532 is arranged inside the rotating shell 543, and the lifting plate 532 forms a rotating structure inside the rotating shell 543, a gear ring 545 is fixed to the top end of the rotating shell 543, a plurality of supporting gears 535 are arranged at equal intervals between the inner side of the gear ring 545 and the outer side of the lifting column 531, the bottom end of the supporting gear 535 is rotatably connected to the rotating shell 543, and the supporting gear 535 is meshed with the gear ring 545, a steering motor 534 is installed on one side of the lifting column 531, and the end of the rotating shaft of the steering motor 534 is fixedly connected to the top end of one of the supporting gears 535;

[0040] After the electric telescopic rod 53 drives the pressing plate 54 to descend, the steering motor 534 is started to rotate to drive the supporting gear 535 to rotate, and the supporting gear 535 can drive the ring gear 545 to rotate, and the ring gear 545 drives the rotating shell 543 to rotate. When the rotating shell 543 rotates, the lifting column 531 and the lifting plate 532 support it. At this time, the rotating shell 543 drives the pressing plate 54 to rotate. When the pressing plate 54 rotates, it drives the crushing ball 55 to crush the solid materials above the mesh plate 52 and the flip plate 521. The crushing ball 55 can roll during the pressing of the pressing plate 54, which is more convenient for crushing the solid materials.

[0041] like Figures 2 to 7 As shown, a plurality of slots 533 are provided at the bottom end of the lifting plate 532, a plurality of protrusions 544 are fixed at the bottom end of the rotating shell 543, and a snap-fit ​​structure can be formed between the slots 533 and the protrusions 544. A support ring 537 is provided above the lifting plate 532, a spring 536 is fixed between the lifting plate 532 and the support ring 537, and the support ring 537 is provided inside the rotating shell 543;

[0042] During the crushing process, the rotating shell 543 is driven to rotate, and the protrusion 544 inside the rotating shell 543 will rotate with it. In the initial state, the protrusion 544 is stuck in the inside of the slot 533. When the protrusion 544 rotates, it will rotate along the edge of the slot 533. Under the effect of the shape of the protrusion 544, the protrusion 544 will gradually separate from the slot 533. At this time, the protrusion 544 will push the rotating shell 543 to move downward. At this time, the rotating shell 543 drives the pressing plate 54 to push downward, and the crushing ball 55 crushes some solid particles with the pressing plate 54 downward. At the same time, the remaining solid particles are crushed by rolling. During this process, the spring 536 is squeezed. When the protrusion 544 rotates to the next slot 533 position, the protrusion 544 re-engages with the slot 533. At this time, the rotating shell 543 drives the pressure plate 54 to rise. This process reciprocates to fully crush the solid particles between the pressure plate 54 and the mesh plate 52. At the same time, the pressure plate 54 will drive the solid-liquid mixture inside the collecting box 5 to flow during the lifting process, so that the crushed solid material can be output to the inside of the feed pipe 41 through the holes of the mesh plate 52 during the flow.

[0043] like Figures 3 to 5 As shown, a scraper bar 542 is fixed to the bottom end of the pressing plate 54, and a plurality of scraper bars 542 are arranged at equal intervals at the bottom end of the pressing plate 54, and the height of the scraper bar 542 is equal to the extended length of the crushing ball 55;

[0044] During the rotation of the pressing plate 54 , the scraper bar 542 rotates along with the pressing plate 54 . The scraper bar 542 can drive the crushed solid material to mix with the liquid material, and can take away more solid material when the liquid material is discharged from the holes of the mesh plate 52 .

[0045] like Figures 3 to 9 As shown, the crushing balls 55 are divided into multiple groups inside the pressure plate 54, and each group of crushing balls 55 is connected by a connecting rod 551;

[0046] Under the connecting action of the connecting rod 551, the crushing ball 55 can remain stable during the downward pressing process. The crushing ball 55 is restricted in rolling direction by the connecting rod 551, which can prevent the crushing ball 55 from rolling in other directions when the crushing ball 55 crushes the material, thereby affecting the crushing effect of the crushing ball 55 on the solid material.

[0047] like Figures 3 to 9 As shown, a bevel gear is fixed to one end of the connecting rod 551 near the inner side of the collecting box 5, and a transmission rod 552 is rotatably connected to the inner side of the pressing plate 54 near the bevel gear. A bevel gear is also fixed to the bottom end of the transmission rod 552. The two bevel gears are meshed and connected. A transverse rotating wheel 553 is fixed to the top end of the transmission rod 552.

[0048] During the rotation of the pressure plate 54, the transverse rotating wheel 553 will be driven to move, and during the movement of the transverse rotating wheel 553, it will contact the inner wall of the collecting box 5. At this time, the transverse rotating wheel 553 will be rotated under the drive of the inside of the collecting box 5, and the transverse rotating wheel 553 will drive the transmission rod 552 to rotate. The transmission rod 552 drives the bevel gear of the connecting rod 551 to rotate through the bevel gear at the bottom. The connecting rod 551 rotates with the bevel gear, and the connecting rod 551 drives the crushing ball 55 to roll in the rotating groove of the pressure plate 54. At this time, the solid materials adhered to the surface of the crushing ball 55 can be scraped off by the edge of the rotating groove opening, which can prevent the solid materials adhered to the surface of the crushing ball 55 from affecting the subsequent use.

[0049] like Figures 8 to 9 As shown, a plurality of rotating holes are formed at equal intervals on the outer side of the horizontal rotating wheel 553, and a vertical rotating wheel 554 is rotatably connected inside the rotating hole;

[0050] When the electric telescopic rod 53 drives the pressure plate 54 to rise and fall inside the collection box 5, in order to prevent the horizontal wheel 553 from increasing the resistance of the pressure plate 54 when it is raised and lowered, a vertical wheel 554 is arranged inside the horizontal wheel 553. The vertical wheel 554 contacts the inner wall of the collection box 5. When the pressure plate 54 is raised and lowered, the vertical wheel 554 can roll on the inner wall of the collection box 5. When the pressure plate 54 rotates, the vertical wheel 554 is subject to the resistance inside the collection box 5, which can drive the horizontal wheel 553 to roll, which can make it easier for the pressure plate 54 to be raised and lowered inside the collection box 5.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A static discharging sand mill, characterized in that: The invention comprises a base (1), wherein a permanent magnet motor (2) is mounted on one side of the top of the base (1), a grinding cylinder (3) is mounted on the other side of the top of the base (1), a grinding roller (31) is rotatably connected to the inside of the grinding cylinder (3), a discharge port (32) is arranged on the side of the grinding cylinder (3) away from the permanent magnet motor (2), a main shaft (21) is fixed on the side of the permanent magnet motor (2) close to the grinding cylinder (3), an end of the main shaft (21) away from the permanent magnet motor (2) is fixedly connected to one end of the grinding roller (31), a feeding pipe (4) is arranged on the side of the grinding cylinder (3) close to the permanent magnet motor (2), a conveying pipe (41) is fixed on the top of the feeding pipe (4), an end of the conveying pipe (41) away from the feeding pipe (4) is connected to the inside of the grinding cylinder (3), and a material collecting structure is fixed on the top of the conveying pipe (41); The material collection structure comprises a collection box (5) fixed to the top end of the material conveying pipe (41), a filter plate (51) is arranged inside the material conveying pipe (41), and the filter plate (51) is located inside the material conveying pipe (41) near the opening of the collection box (5); A mesh plate (52) is fixed at the bottom end of the collecting box (5), an electric telescopic rod (53) is installed at the top end of the collecting box (5), a pressure plate (54) is provided at the bottom end of the electric telescopic rod (53), and a pressure sensor (511) is fixed on one side of the filter plate (51); A flip plate (521) is hingedly connected to one side of the mesh plate (52); a limit block (522) is fixed to the top of the flip plate (521) near the mesh plate (52); the other side of the pressure sensor (511) is fixedly connected to the inner wall of the feed pipe (41); a sealing ring (541) is sleeved on the outside of the pressure plate (54); the sealing ring (541) is closely attached to the inner wall of the feed pipe (41); support plates (523) are arranged on both sides below the flip plate (521); and the support plates (523) are fixedly connected to the collection box (5); A plurality of crushing balls (55) are rotatably connected inside the pressure plate (54), and a rotation groove for the crushing balls (55) to rotate is provided inside the pressure plate (54), and the bottom ends of the crushing balls (55) extend below the rotation groove.

2. A static discharging sand mill according to claim 1, characterized in that: A lifting column (531) is fixed to the bottom end of the electric telescopic rod (53), a lifting plate (532) is fixed to the bottom end of the lifting column (531), a rotating shell (543) is fixed to the top end of the pressing plate (54), the lifting column (531) passes through the top end of the rotating shell (543), the lifting plate (532) is arranged inside the rotating shell (543), and the lifting plate (532) forms a rotating structure inside the rotating shell (543), a gear ring (545) is fixed to the top end of the rotating shell (543), a plurality of supporting gears (535) are arranged at equal intervals between the inner side of the gear ring (545) and the outer side of the lifting column (531), the bottom end of the supporting gear (535) is rotatably connected to the rotating shell (543), and the supporting gear (535) is meshedly connected to the gear ring (545), and a steering motor (534) is installed on one side of the lifting column (531), and the end of the rotating shaft of the steering motor (534) is fixedly connected to the top end of one of the supporting gears (535).

3. A static discharging sand mill according to claim 2, characterized in that: A plurality of slots (533) are provided at the bottom end of the lifting plate (532); a plurality of protrusions (544) are fixed at the bottom end inside the rotating shell (543); a snap-fit ​​structure can be formed between the slots (533) and the protrusions (544); a support ring (537) is provided above the lifting plate (532); a spring (536) is fixed between the lifting plate (532) and the support ring (537); and the support ring (537) is provided inside the rotating shell (543).

4. The static discharging sand mill according to claim 1, characterized in that: A scraper bar (542) is fixed to the bottom end of the pressing plate (54). A plurality of scraper bars (542) are arranged at equal intervals at the bottom end of the pressing plate (54). The height of the scraper bar (542) is equal to the extended length of the crushing ball (55).

5. A static discharging sand mill according to claim 4, characterized in that: The crushing balls (55) are divided into a plurality of groups inside the pressure plate (54), and each group of crushing balls (55) is connected by a connecting rod (551).

6. A static discharging sand mill according to claim 5, characterized in that: A bevel gear is fixed to one end of the connecting rod (551) close to the inner side of the collecting box (5), and a transmission rod (552) is rotatably connected to the inner side of the pressing plate (54) close to the bevel gear. A bevel gear is also fixed to the bottom end of the transmission rod (552). The two bevel gears are meshed and connected. A transverse rotating wheel (553) is fixed to the top end of the transmission rod (552).

7. A static discharging sand mill according to claim 6, characterized in that: A plurality of rotating holes are formed at equal intervals on the outer side of the horizontal rotating wheel (553), and the interior of the rotating holes is rotatably connected to the vertical rotating wheel (554).

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