High-efficiency sand mill for producing suspending agent

Abstract

The application discloses a high-efficiency sand mill for suspension agent production and relates to the technical field of sand mills.The sand mill comprises a base, a barrel and a counter-impact grinding mechanism, one side of the top of the base is provided with a supporting plate, the other side of the top of the base is provided with a driving seat, the upper side of the driving seat is connected with a stirring shaft through a bearing, the barrel is arranged between the supporting plate and the driving seat, and the two ends of the barrel are provided with conical heads through flanges.The high-efficiency sand mill for suspension agent production is provided with quick-mounting mechanisms, a counter-impact grinding mechanism and a backflushing disc, so that multiple quick-mounting mechanisms which are distributed in a staggered manner can be used for equidistantly and staggeredly mounting the counter-impact grinding mechanism;when the stirring shaft drives the grinding discs of the counter-impact grinding mechanism to rotate and grind raw materials, the two adjacent grinding discs can be used for intermittently overturning and transversely counter-impacting and grinding the raw materials, and the backflushing disc is used for backflushing the transversely flowing raw materials, so that the mixed raw materials for producing the suspension agent can be efficiently ground in the sand mill.

Description

Technical Field

[0001] This invention relates to the field of sand mill technology, specifically to a high-efficiency sand mill for the production of suspension agents. Background Technology

[0002] The working principle of a sand mill is to use a feed pump to input the solid-liquid mixture, which has been pre-dispersed and wetted by a mixer, into the cylinder. The material and the grinding media inside the cylinder are stirred together by a high-speed rotating disperser, thereby generating stronger collisions, friction, and shearing effects between the solid particles in the material and the grinding media, achieving the purpose of accelerating the grinding of particles and dispersing aggregates. In the production process of suspension concentrates, it is necessary to obtain suspension concentrate products that meet standard quality requirements, which is inseparable from the grinding and processing of suspension concentrate raw materials by a sand mill.

[0003] According to Chinese Patent No. CN213000351U, a horizontal sand mill for suspending agent processing is disclosed. This utility model can make the main shaft of the sand mill work in the optimal working temperature range, and it can also make the material temperature more uniform.

[0004] According to Chinese Patent No. CN115350772B, a horizontal sand mill for producing pesticides is disclosed. This horizontal sand mill for producing pesticides can effectively solve the problems in the prior art. Most sand mills use the high-speed rotation of dispersing blades or pins to generate centrifugal force between the ingredients and grinding media, thereby dispersing the ingredients of pesticide suspension. However, due to the large particle size of the initially introduced ingredients, the lack of a pre-treatment mechanism in the sand mill, and the limited centrifugal force generated by the rotation of the dispersing blades or pins, the ingredients cannot be ground quickly, which greatly reduces the grinding efficiency of the grinding media and accelerates the wear and breakage of the grinding media.

[0005] When the above technical solution is used, the raw materials are stirred and mixed in the barrel, and the grinding is completed through the contact between the raw materials and the grinding media. During the grinding process, the raw materials will accumulate in local positions, which will prevent the raw materials from being fully ground, and the grinding and crushing efficiency of the suspension products is low. Summary of the Invention

[0006] The purpose of this invention is to provide a high-efficiency sand mill for the production of suspensions, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency sand mill for suspending agent production, comprising a base, a material cylinder, and a counter-grinding mechanism. A support plate is provided on one side of the top of the base, and a drive seat is provided on the other side of the top of the base. A stirring shaft is connected to the upper side of the drive seat via a bearing. A material cylinder is provided between the support plate and the drive seat, and conical heads are installed at both ends of the material cylinder via flanges. The two conical heads are respectively connected to the support plate and the drive seat. A baffle is installed at the end of the conical head away from the material cylinder. A feed inlet is provided at the top of the material cylinder. A grinding media feeding pipe is connected to the oblique upper part of the conical head. A quick-connect mechanism is provided in the middle of the stirring shaft. The quick-connect mechanism includes a drive sleeve that is sleeved with the stirring shaft. A sliding groove is provided through one side of the drive sleeve.

[0008] A counter-grinding mechanism is provided on the outer side of the drive sleeve. The counter-grinding mechanism includes two grinding discs sleeved on the outer side of the drive sleeve. The surfaces of the two adjacent grinding discs that are far apart from each other are provided with cutting edges. The surfaces of the grinding discs are provided with through holes. A support arm is movably connected between the two adjacent grinding discs. A traction rod is movably connected to the hinged end of the support arm. The traction rod is slidably inserted into a groove, and the end of the traction rod inserted into the groove is connected to a guide wheel. A push-pull rod is slidably connected inside the stirring shaft. The outer side of the push-pull rod is fixed with convex rings that abut against the guide wheel at equal intervals. An extrusion plate is fixed to one end of the push-pull rod and the inner wall of the baffle. Backflush plates are sleeved on both ends of the stirring shaft near the conical head.

[0009] Preferably, the grinding disc has a fan-shaped structure and a U-shaped interface is provided on the inner side of the grinding disc, and the surface of the extrusion disc is symmetrically provided with arc-shaped protrusions.

[0010] Preferably, the end of the push-pull rod away from the extrusion plate is fixed with a guide rod of a polygonal prism structure, and a return spring is sleeved on the outer side of the guide rod. A reserved groove is opened on the inner side of the stirring shaft to prevent the guide rod from sliding off-center.

[0011] Preferably, a motor is installed on the lower side of the drive base, and a transmission device connecting the motor and the stirring shaft is provided on the inner side of the drive base. The two ends of the stirring shaft are movably connected to the conical head through sealed bearings.

[0012] Preferably, the outer side of the stirring shaft is composed of an arc surface and a plane, and the planes on the outer side of the stirring shaft are symmetrically distributed. Furthermore, the two planes on both sides of the stirring shaft are provided with insertion interfaces that communicate with the slide groove, and the central opening of the drive sleeve is matched and connected to the stirring shaft.

[0013] Preferably, mounting seats are symmetrically slidably connected to both sides of the drive sleeve, and the drive sleeve and the mounting seats are fastened together by bolts. A limiting shell is embedded in the side of the mounting seat away from the drive sleeve. Two connecting members are movably connected to the inner side of the limiting shell. The connecting members consist of gears and a drive shaft fixed to the center of the gears. The gears of two adjacent connecting members mesh with each other. The drive shaft of the connecting member extends out of the limiting shell and is fixed to the U-shaped interface end of the grinding disc.

[0014] Preferably, the stirring shaft is also equipped with two limiting rings for clamping the quick-assembly mechanism.

[0015] Preferably, at least two backflush discs are provided near the inner side of the conical head. An elliptical opening is provided in the middle of the backflush disc, and the two sides of the backflush disc near the elliptical opening are movably connected to the stirring shaft by a smooth rod screw. The inner wall surface of the backflush disc is provided with abrasion-enhancing protrusions.

[0016] Preferably, a drain valve pipe is connected to the bottom of the material cylinder, and a control valve is installed on the drain valve pipe.

[0017] Preferably, the machine base is provided with a liquid storage tank inside, and a discharge pipe communicating with the liquid storage tank is connected to one side of the machine base.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This high-efficiency sand mill for suspending agent production is equipped with a quick-assembly mechanism, a counter-grinding mechanism, and a backwash plate linked together. This allows multiple quick-assembly mechanisms to be installed at equal intervals and staggered positions. When the stirring shaft drives the grinding disc of the counter-grinding mechanism to rotate and grind the raw material, two adjacent grinding discs intermittently rotate to perform lateral counter-grinding of the raw material. At the same time, the backwash plate is used to backwash the laterally flowing raw material, ensuring that the mixed raw materials for producing suspending agents are efficiently ground in this sand mill.

[0020] 1. The high-efficiency sand mill used for the production of suspension agents uses a motor to drive multiple sets of grinding discs on the stirring shaft to shear and grind the mixed raw materials. The intermittent extrusion of the two extrusion discs can drive the grinding discs to intermittently push the mixed raw materials laterally during grinding, so that the raw materials are laterally impacted between the barrel and the conical head. When two adjacent grinding discs are adjusted from a state of being far apart to a state of being close together, the two adjacent grinding discs will squeeze the mixed raw materials between them to rotate. When two adjacent grinding discs are adjusted from a state of being close together to a state of being far apart, the two cutting edges of the two grinding discs will concentrate on grinding the mixed raw materials, thereby ensuring that the sand mill can achieve efficient grinding of suspension agent raw materials and facilitate accelerating the grinding and processing speed of suspension agent products.

[0021] 2. The high-efficiency sand mill used for the production of this suspension agent can cause the mixed raw material to flow circumferentially between two adjacent backflush discs when the stirring shaft rotates rapidly. The mixed raw material is also ground by the grinding protrusions. At the same time, the rotation of the grinding protrusions can cause the raw material between the two backflush discs to flow towards the material cylinder at an inclined angle. Therefore, when the grinding mechanism pushes the ground mixed raw material laterally to the position of the conical head, the action of the backflush discs can cause the raw material to be thrown back to the position of the material cylinder at an inclined angle, ensuring that the mixed raw material achieves reciprocating flow grinding in the sand mill. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the sand mill of the present invention;

[0023] Figure 2 This is a three-dimensional cross-sectional structural diagram of the sand mill of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the material cylinder and conical head with adjacent grinding discs close together according to the present invention;

[0025] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the barrel and conical head of the present invention with adjacent grinding discs far apart;

[0026] Figure 5 This is a three-dimensional structural diagram of the quick-assembly mechanism of the present invention distributed on the stirring shaft;

[0027] Figure 6 This is a three-dimensional exploded view of the quick-assembly mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the first three-dimensional cross-sectional structure of the quick-assembly mechanism of the present invention distributed on the stirring shaft;

[0029] Figure 8 This is a schematic diagram of the second three-dimensional cross-sectional structure of the quick-assembly mechanism of the present invention distributed on the stirring shaft;

[0030] Figure 9 This is a schematic diagram of the first three-dimensional structure of adjacent grinding discs of the present invention.

[0031] Figure 10 This is a schematic diagram of the second three-dimensional structure of the present invention, showing adjacent grinding discs brought together.

[0032] Figure 11 This is a schematic diagram of the first three-dimensional structure of the present invention, showing the adjacent grinding discs being far apart.

[0033] Figure 12 This is a schematic diagram of the second three-dimensional structure of the present invention, showing the adjacent grinding discs being far apart;

[0034] Figure 13This is a schematic diagram of the third three-dimensional structure of the present invention with adjacent grinding discs far apart;

[0035] Figure 14 This is a three-dimensional structural diagram of the recoil disc of the present invention;

[0036] Figure 15 This is a three-dimensional structural diagram of the backwash plate of the present invention mounted on the stirring shaft;

[0037] Figure 16 This is a three-dimensional cross-sectional view of the backwash plate of the present invention mounted on the stirring shaft.

[0038] In the diagram: 1. Base; 101. Storage tank; 102. Drain valve pipe; 103. Support plate; 2. Drive seat; 201. Stirring shaft; 202. Motor; 3. Material cylinder; 301. Feed inlet; 4. Conical head; 401. Grinding medium feeding pipe; 402. Baffle plate; 5. Quick-release mechanism; 501. Drive sleeve; 502. Mounting seat; 503. Limiting shell; 504. Connecting piece; 505. Slide groove; 6. Counter-grinding mechanism; 601. Grinding disc; 602. Cutting edge; 603. Through hole; 604. Support arm; 605. Traction rod; 606. Push-pull rod; 607. Convex ring; 608. Guide rod; 609. Return spring; 7. Limiting ring; 8. Extrusion disc; 9. Backflush disc; 901. Smooth rod screw; 902. Grinding protrusion. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1-13 This invention provides a technical solution: a high-efficiency sand mill for suspending agent production, including a base 1, a material cylinder 3 and a counter-grinding mechanism 6. A support plate 103 is provided on one side of the top of the base 1, and a drive seat 2 is provided on the other side of the top of the base 1. A stirring shaft 201 is connected to the upper side of the drive seat 2 via a bearing. A material cylinder 3 is provided between the support plate 103 and the drive seat 2, and conical heads 4 are installed at both ends of the material cylinder 3 via flanges. The two conical heads 4 are respectively connected to the support plate 103 and the drive seat 2. A baffle plate 402 is installed at the end of the conical head 4 away from the material cylinder 3. A feed inlet 301 is provided at the top of the material cylinder 3. A grinding medium feeding pipe 401 is connected to the upper oblique part of the conical head 4. A quick-connect mechanism 5 is provided in the middle of the stirring shaft 201. The quick-connect mechanism 5 includes a drive sleeve 501 that is sleeved with the stirring shaft 201. A sliding groove 505 is provided through one side of the drive sleeve 501.

[0041] A counter-grinding mechanism 6 is provided on the outer side of the drive sleeve 501. The counter-grinding mechanism 6 includes two grinding discs 601 sleeved on the outer side of the drive sleeve 501. A cutting edge 602 is provided on the surface of the two adjacent grinding discs 601 that is far apart from each other. The grinding discs 601 have a fan-shaped structure, and a U-shaped interface is provided on the inner side of the grinding discs 601. A flow-guiding groove is provided on the surface of the grinding discs 601 near the cutting edge 602. When the grinding discs 601 rotate, the cutting edge 602 shears the raw material particles for producing the suspending agent, and the flow-guiding groove can change the flow direction of the raw material grinding. A through hole 603 is provided on the surface of the grinding discs 601. The two adjacent grinding discs 601... A support arm 604 is movably connected between the two sides. The support arm 604 has a "V" shaped structure. A traction rod 605 is movably connected to the hinged end of the support arm 604. The traction rod 605 is slidably inserted into the slide groove 505. A guide wheel is connected to one end of the traction rod 605 that is inserted into the slide groove 505. A push-pull rod 606 is slidably connected inside the stirring shaft 201. A convex ring 607 that abuts against the guide wheel is fixed at equal intervals on the outer side of the push-pull rod 606. An extrusion plate 8 is fixed to one end of the push-pull rod 606 and the inner wall of the baffle 402. Arc-shaped protrusions are symmetrically arranged on the surface of the extrusion plate 8. Backflush plates 9 are sleeved on both ends of the stirring shaft 201 near the conical head 4.

[0042] The end of the push-pull rod 606 away from the extrusion plate 8 is fixed with a multi-faceted prism structure guide rod 608, and a return spring 609 is sleeved on the outside of the guide rod 608. A reserved groove for anti-slip movement with the guide rod 608 is opened at one end of the inner side of the stirring shaft 201.

[0043] A motor 202 is installed on the lower side of the drive base 2. A transmission device connecting the motor 202 and the stirring shaft 201 is provided on the inner side of the drive base 2. The transmission device adopts one of synchronous belt drive and chain drive. The two ends of the stirring shaft 201 are movably connected to the conical head 4 through sealed bearings.

[0044] In specific implementation, firstly, the raw materials for producing the suspension are introduced along the feed inlet 301 at the top of the material cylinder 3, and the grinding material is introduced from the grinding medium feeding pipe 401 into the two conical heads 4; then, the motor 202 is started, and the motor 202 drives the stirring shaft 201 to rotate through the transmission device in the drive seat 2. Thus, when the stirring shaft 201 rotates, it can drive the grinding disc 601 on the outside of the quick-assembly mechanism 5 to rotate, so that the mixed raw materials flow from the gaps on both sides of the grinding disc 601. Since the grinding disc 601 can shear and stir the mixed raw materials through the cutting edge 602 on its surface when it rotates, the raw materials collide with the grinding disc 601 to complete the crushing and grinding.

[0045] When the stirring shaft 201 rotates, it engages with the guide rod 608 of the polygonal prism structure through the internal reserved groove to drive the push-pull rod 606 to rotate. The rotation of the push-pull rod 606 drives the extrusion disc 8 at its end to rotate. Since the baffle 402 is installed on the outside of the conical end cap 4, the extrusion disc 8 on the inside of the baffle 402 cannot rotate. Therefore, when the push-pull rod 606 rotates, the extrusion disc 8 at its end and the extrusion disc 8 on the inside of the baffle 402 will rotate relative to each other. When the two extrusion discs 8 are pressed against each other by the arc-shaped protrusion, the push-pull rod 606 will be pushed into the inside of the stirring shaft 201, causing the return spring 609 to compress and deform. At the same time, the push-pull rod 606 will press the guide wheel at one end of the traction rod 605 through the outer convex ring 607, causing... The traction rod 605 pushes outward along the groove 505 of the drive sleeve 501, so that the traction rod 605 can push the "V"-shaped support arm 604 to open at an angle. Then the support arm 604 will drive the two adjacent grinding discs 601 to rotate around the connector 504. Since the two adjacent connectors 504 are connected by gears, it can ensure that the two adjacent grinding discs 601 move away synchronously. Therefore, when the two extrusion discs 8 are pressed against each other by the arc-shaped protrusion, the support arm 604 will push the two adjacent grinding discs 601 to quickly rotate laterally away, so that the grinding discs 601 can intermittently push the mixed material laterally while grinding the material in a circular rotation, so that the material is laterally impacted between the material cylinder 3 and the conical head 4.

[0046] When the arc-shaped protrusions of the two pressing discs 8 are misaligned and separated, the elastic compression of the return spring 609 causes the push-pull rod 606 to drive the protruding ring 607 away from the guide wheel at one end of the traction rod 605. Under the action of the centrifugal force generated by the rotation of the grinding disc 601, the two adjacent grinding discs 601 will move closer to each other, thereby reducing the included angle of the support arm 604 of the "V" shaped structure, and thus causing the two adjacent grinding discs 601 to return to their original state.

[0047] Please see Figures 2-8 The outer side of the stirring shaft 201 is composed of an arc surface and a plane, and the planes on the outer side of the stirring shaft 201 are symmetrically distributed. Insertion interfaces communicating with the slide groove 505 are provided on both sides of the stirring shaft 201, and the central opening of the drive sleeve 501 is matched and connected to the stirring shaft 201.

[0048] The drive sleeve 501 is symmetrically slidably connected to the mounting base 502 on both sides, and the drive sleeve 501 and the mounting base 502 are fastened together by bolts. The mounting base 502 is embedded in the side away from the drive sleeve 501 with a limiting shell 503. The inner side of the limiting shell 503 is movably connected to two connecting parts 504. The connecting parts 504 are composed of gears and a drive shaft fixed to the center of the gears. The gears of two adjacent connecting parts 504 are meshed and driven. The drive shaft of the connecting part 504 extends out of the limiting shell 503 and is fixed to the U-shaped interface end of the grinding disc 601. Two limiting rings 7 for clamping the quick-installation mechanism 5 are also installed on the stirring shaft 201. By installing two limiting rings 7 on the stirring shaft 201, the installation of multiple quick-installation mechanisms 5 can be limited to prevent the quick-installation mechanism 5 from shifting.

[0049] In specific implementation, when assembling the counter-grinding mechanism 6 onto the stirring shaft 201, firstly, the drive sleeve 501 with the sliding groove 505 is misaligned and fitted onto the outside of the stirring shaft 201, and the sliding groove 505 of each drive sleeve 501 corresponds to the insertion interface on the outer surface of the stirring shaft 201; then, the connecting piece 504 is connected to the limiting shell 503, and the limiting shell 503 is embedded into the mounting base 502, and then the drive shaft of the connecting piece 504 is fixed to the U-shaped interface of the grinding disc 601; finally, the mounting base 502 is symmetrically slidably placed on both sides of the drive sleeve 501, and bolts are used to fasten the drive sleeve 501 and the mounting base 502. Therefore, the counter-grinding mechanism 6 can be quickly installed through the quick-installation mechanism 5.

[0050] When the drive sleeve 501 with the groove 505 is misaligned and fitted onto the outside of the stirring shaft 201, the grinding discs 601 of the counter-grinding mechanism 6 will be equidistantly misaligned on the stirring shaft 201. When two adjacent grinding discs 601 are close together, the stirring shaft 201 drives the equidistantly misaligned grinding discs 601 to rotate, which can grind the mixed raw materials concentrated in the material cylinder 3 at high speed. When two adjacent grinding discs 601 are flipped away, the equidistantly misaligned grinding discs 601 will push the mixed raw materials laterally to generate counter-collision. At the same time, through holes 603 are opened on the surface of the grinding discs 601, which can make the counter-flowing mixed raw materials move laterally over a long distance. Therefore, the grinding intensity of the mixed raw materials can be enhanced by the grinding media and the grinding discs 601.

[0051] When two adjacent grinding discs 601 are adjusted from a state of distance to a state of proximity, the two adjacent grinding discs 601 will squeeze the mixed material between them to rotate, and the ground and broken material will be discharged to both sides through the through holes 603 on the surface of the grinding discs 601; when two adjacent grinding discs 601 are adjusted from a state of proximity to a state of distance, the two spaced grinding discs 601 will cause the cutting edges 602 to flip and move closer. At this time, the two cutting edges 602 on both sides of the two grinding discs 601 will concentrate on grinding the mixed material, and the ground and broken material will be discharged to both sides through the through holes 603 on the surface of the grinding discs 601. This ensures that the sand mill can achieve efficient grinding of suspension raw materials and facilitates the acceleration of the grinding processing speed of suspension products.

[0052] Please see Figures 2-4 as well as Figures 14-16 At least two backflush discs 9 are provided near the inner side of the conical head 4. An elliptical opening is provided in the middle of the backflush disc 9, and the two sides of the backflush disc 9 near the elliptical opening are movably connected to the stirring shaft 201 by a smooth rod screw 901. The inner wall surface of the backflush disc 9 is provided with abrasion-enhancing protrusions 902.

[0053] In specific implementation, since the backflush disc 9 is movably connected to the stirring shaft 201 through the elliptical-mouthed smooth rod screw 901, when the stirring shaft 201 rotates slowly, the centrifugal force of the backflush disc 9 is insufficient, causing the backflush disc 9 to follow the rotation of the stirring shaft 201 and achieve flipping and swinging. This allows the mixed raw material to be randomly thrown from the conical head 4 towards the material cylinder 3. When the stirring shaft 201 rotates rapidly, the centrifugal force of the backflush disc 9 is sufficient, causing the backflush disc 9 to follow the rotation of the stirring shaft 201 and achieve stable rotation. This allows the mixed raw material to generate circumferential flow between two adjacent backflush discs 9, and grind the mixed raw material through the grinding protrusion 902. At the same time, the rotation of the grinding protrusion 902 can cause the raw material between the two backflush discs 9 to flow towards the material cylinder 3 at an inclined angle. Therefore, when the counter-grinding mechanism 6 pushes the ground mixed raw material laterally to the position of the conical head 4, the action of the backflush disc 9 can cause the raw material to be thrown back at an inclined angle to the position of the material cylinder 3, ensuring that the mixed raw material achieves reciprocating flow grinding in the sand mill.

[0054] Please see Figure 1 and Figure 2 The bottom of the material cylinder 3 is connected to a drain valve pipe 102, and a control valve is installed on the drain valve pipe 102. The machine base 1 is equipped with a storage tank 101. A discharge pipe connected to the storage tank 101 is connected to one side of the machine base 1. When the mixed raw materials are ground to meet the quality requirements of the suspension product, the product is transported to the storage tank 101 along the drain valve pipe 102 by opening the control valve on the drain valve pipe 102. This facilitates the temporary storage of the suspension in the storage tank 101, and the suspension can be easily discharged through the discharge pipe on one side of the storage tank 101.

[0055] In summary, the raw materials for producing the suspension are introduced through the feed inlet 301 at the top of the cylinder 3, and the grinding material is introduced from the grinding media feed pipe 401 into the two conical heads 4. The motor 202 is started to drive the stirring shaft 201 and the counter-grinding mechanism 6 to rotate, so that the mixed raw materials flow from the gaps on both sides of the grinding disc 601. The mixed raw materials are sheared and stirred by the cutting edge 602 on the surface of the grinding disc 601, so that the raw materials collide with the grinding disc 601 to complete the crushing and grinding. When the mixed raw materials are ground to meet the quality requirements of the suspension product, the control valve on the drain valve pipe 102 is opened, so that the product is conveyed and stored in the storage tank 101 along the drain valve pipe 102. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency sand mill for producing suspension concentrates, comprising a base (1), a feed cylinder (3), and a counter-grinding mechanism (6), characterized in that: A support plate (103) is provided on one side of the top of the machine base (1), and a drive seat (2) is provided on the other side of the top of the machine base (1). A stirring shaft (201) is connected to the upper side of the drive seat (2) via a bearing. A material cylinder (3) is provided between the support plate (103) and the drive seat (2), and conical heads (4) are installed at both ends of the material cylinder (3) via flanges. The two conical heads (4) are respectively connected to the support plate (103) and the drive seat (2). A baffle plate (402) is installed at the end of the conical head (4) away from the barrel (3). A feed inlet (301) is provided at the top of the barrel (3). A grinding medium feeding pipe (401) is connected to the oblique upper part of the conical head (4). A quick-installation mechanism (5) is provided in the middle of the stirring shaft (201). The quick-installation mechanism (5) includes a drive sleeve (501) that is sleeved with the stirring shaft (201). A sliding groove (505) is provided through one side of the drive sleeve (501). A counter-grinding mechanism (6) is provided on the outer side of the drive sleeve (501). The counter-grinding mechanism (6) includes two grinding discs (601) sleeved on the outer side of the drive sleeve (501). A cutting edge (602) is provided on the side surface of the two adjacent grinding discs (601) that is far away from each other. A through hole (603) is opened on the surface of the grinding disc (601). A support arm (604) is movably connected between the two adjacent grinding discs (601). A traction rod (605) is movably connected to the hinged end in the middle of the support arm (604). The traction rod (605) is slidably inserted into the slide groove (505), and the end of the traction rod (605) inserted into the slide groove (505) is connected to a guide wheel. The inside of the stirring shaft (201) is slidably connected to a push-pull rod (606). The outer side of the push-pull rod (606) is fixed with a convex ring (607) that abuts against the guide wheel. One end of the push-pull rod (606) and the inner wall of the baffle (402) are both fixed with a squeezing plate (8). The two ends of the stirring shaft (201) near the conical head (4) are fitted with a backwash plate (9).

2. The high-efficiency sand mill for producing suspensions according to claim 1, characterized in that: The grinding disc (601) has a fan-shaped structure, and a U-shaped interface is provided on the inner side of the grinding disc (601). The surface of the extrusion disc (8) is symmetrically provided with arc-shaped protrusions.

3. The high-efficiency sand mill for producing suspensions according to claim 1, characterized in that: The push-pull rod (606) is fixed with a multi-faceted prism structure guide rod (608) at the end away from the extrusion plate (8), and a reset spring (609) is sleeved on the outer side of the guide rod (608). A reserved groove for preventing slippage between the guide rod (608) and the inner side of the stirring shaft (201) is provided.

4. The high-efficiency sand mill for producing suspensions according to claim 2, characterized in that: A motor (202) is installed on the lower side of the drive seat (2), and a transmission device connecting the motor (202) and the stirring shaft (201) is provided on the inner side of the drive seat (2). The two ends of the stirring shaft (201) are movably connected to the conical head (4) through sealed bearings.

5. The high-efficiency sand mill for producing suspensions according to claim 4, characterized in that: The outer side of the stirring shaft (201) is composed of an arc surface and a plane, and the planes on the outer side of the stirring shaft (201) are symmetrically distributed. Insertion interfaces communicating with the slide groove (505) are provided on both sides of the stirring shaft (201). The central opening of the drive sleeve (501) is matched and connected to the stirring shaft (201).

6. The high-efficiency sand mill for producing suspensions according to claim 5, characterized in that: The drive sleeve (501) is symmetrically slidably connected to the mounting base (502) on both sides, and the drive sleeve (501) and the mounting base (502) are fastened together by bolts. The mounting base (502) is embedded in the side away from the drive sleeve (501) with a limiting shell (503). The inner side of the limiting shell (503) is movably connected to two connecting parts (504). The connecting parts (504) are composed of gears and a drive shaft fixed to the center of the gears. The gears of the two adjacent connecting parts (504) are meshed and driven. The drive shaft of the connecting part (504) extends out of the limiting shell (503) and is fixed to the U-shaped interface end of the grinding disc (601).

7. The high-efficiency sand mill for producing suspensions according to claim 5, characterized in that: Two limiting rings (7) for clamping the quick-release mechanism (5) are also installed on the stirring shaft (201).

8. The high-efficiency sand mill for producing suspensions according to claim 1, characterized in that: At least two backflush discs (9) are provided near the inner side of the conical head (4). An elliptical opening is provided in the middle of the backflush disc (9), and the two sides of the backflush disc (9) near the elliptical opening are movably connected to the stirring shaft (201) by a smooth rod screw (901). The inner wall surface of the backflush disc (9) is provided with abrasion-enhancing protrusions (902).

9. A high-efficiency sand mill for producing suspensions according to claim 1, characterized in that: The bottom of the material cylinder (3) is connected to a drain valve pipe (102), and a control valve is installed on the drain valve pipe (102).

10. A high-efficiency sand mill for producing suspensions according to claim 9, characterized in that: The machine base (1) is provided with a liquid storage tank (101) inside, and a discharge pipe connected to the liquid storage tank (101) is connected to one side of the machine base (1).

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