Hammerless mechanism sand mill

Abstract

The utility model provides a kind of hammerhead machine-made sand grinder, belong to mechanical equipment technical field, including vertically setting by lower casing and the top cover being located above lower casing and being hinged with lower casing and being constituted of cylindrical casing, the inner wall of lower casing and top cover is all provided with lining, the rotatable multiple groups of crushing mechanism are sequentially arranged in lower casing from top to bottom, the particle size of stone particle that the crushing mechanism below is broken forms is less than the particle size of stone particle that adjacent upper crushing mechanism breaks and forms;Lower casing is provided with the guide plate corresponding to multiple groups of crushing mechanism one by one, guide plate is located at the outside of corresponding crushing mechanism, and drop gap is equipped between guide plate and corresponding crushing mechanism;Wherein, the drop gap between crushing mechanism below and corresponding guide plate is less than the drop gap between adjacent upper crushing mechanism and corresponding guide plate.The utility model avoids hammerhead use and subsequent maintenance replacement, reduces cost;While it can guarantee the quality of finished sand.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, specifically relating to mechanical equipment for manufacturing sand particles, and particularly to a hammerless sand mill. Background Technology

[0002] Mechanized sand refers to sand particles processed by sand making machines and other auxiliary equipment. The finished product of manufactured sand has a more regular shape and can be processed into sand particles of different specifications, shapes and sizes according to different process requirements. It can be used to meet the production needs of various fields such as producing high-quality stone paint. Mechanized sand requires professional equipment to produce qualified and suitable sand particles.

[0003] Chinese utility model patent application number CN202410942695.9 provides a hammerless sand mill, which includes a cylindrical shell composed of a lower shell and an upper shell. A crushing mechanism and a grinding mechanism are arranged sequentially from top to bottom inside the cylindrical shell. The material is initially crushed on the crushing mechanism, and the crushed material enters the grinding mechanism for final crushing.

[0004] However, the grinding mechanism in the aforementioned patent works by using a high-speed rotating hammer to crush the stone. Since the hammer and the liner plate are subject to high-speed impacts with the material over a long period, they are considered wear parts. These wear parts need to be replaced regularly, which not only increases the user's production costs but also causes the finished sand to contain metal impurities ground off from these wear parts, affecting the quality of the sand. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a hammerless machine sand mill that extends the service life of the liner and prevents the finished sand from containing metal impurities ground off.

[0006] The technical solution adopted by this utility model for a hammerless mechanical sand mill is as follows: A hammerless sand mill includes a cylindrical casing vertically arranged by a lower casing and a top cover located above and hinged to the lower casing. The inner walls of both the lower casing and the top cover are lined with plates. Multiple sets of crushing mechanisms capable of sequentially crushing stone and rotating are arranged from top to bottom inside the lower casing. Guide plates corresponding to each set of crushing mechanisms are arranged on the outer side of the crushing mechanisms inside the lower casing, and a falling gap is provided between the guide plates and the corresponding crushing mechanisms. The particle size of the stone particles crushed by the lower crushing mechanism is smaller than the particle size of the stone particles crushed by the adjacent upper crushing mechanism.

[0007] A further improvement of the present invention is that: the multiple sets of crushing mechanisms are all driven to rotate horizontally by a vertical main shaft, each set of crushing mechanisms includes a horizontal throwing disc fixedly sleeved on the main shaft, and the edge of the throwing disc is provided with multiple vertical throwing plates along the radial direction of the throwing disc; wherein, the diameter of the throwing disc located below is larger than the diameter of the adjacent upper throwing disc.

[0008] A further improvement of this utility model is that the center of the uppermost material-slinging disc is opposite to the outlet of the feed pipe set on the top cover, and a cone-shaped upward-convex material-distributing disc is set at the center of the uppermost material-slinging disc.

[0009] A further improvement of this utility model is that the falling gap between the lower crushing mechanism and the corresponding guide plate is smaller than the falling gap between the adjacent upper crushing mechanism and the corresponding guide plate.

[0010] A further improvement of the present invention is that each of the guide plates includes multiple arc-shaped plates horizontally fixed on the inner wall of the lower housing for guiding the upper guide plate to the adjacent lower crushing mechanism. The multiple arc-shaped plates are spliced ​​together to form a guide plate with a material discharge channel in the center. Each arc-shaped plate is provided with a strip hole that penetrates the thickness.

[0011] A further improvement of this utility model is that a ring of bearing seats is provided on the inner wall of the lower housing, and arc-shaped plates are fixed on the upper and lower edges of the inner edge of the bearing seats, and the strip holes of the two arc-shaped plates on the same bearing seat are opposite each other.

[0012] A further improvement of this utility model is that: the top cover has an inlet for a fixed connection to the feed pipe, and the bottom of the lower casing has an outlet.

[0013] A further improvement of this utility model is that the discharge port is located around the main shaft, and a partition is provided between the discharge port and the main shaft.

[0014] A further improvement of this utility model is that the lower housing is fixed at the center of the base, and the main shaft extends downward to the bottom of the lower housing and is driven by a drive motor on the base.

[0015] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows: 1. In this hammerless sand mill, the stone material entering the casing is thrown out to the corresponding guide plate by the crushing action of the crushing mechanism located above. The first stone material thrown out forms a stone pile on the guide plate, and the stone material thrown out later is crushed into larger stone particles after impacting the stone pile at high speed. The crushed stone particles fall to the adjacent crushing mechanism below through the falling gap, and are crushed again by the stone-on-stone crushing method; the lowest crushing mechanism crushes the stone particles to a suitable particle size.

[0016] 2. In this hammerless sand mill, the crushing of stone and stone particles is completed by stone-on-stone crushing, thus eliminating the need for hammers, avoiding the use and subsequent maintenance and replacement of hammers, and reducing costs. At the same time, in this utility model, the stone or stone particles only collide with the liner plate when the stone pile is initially formed on the guide plate. In the subsequent stone-on-stone crushing process, the stone or stone particles no longer collide with the liner plate, thereby minimizing the wear of the liner plate and reducing metal impurities in the finished sand, ensuring the quality of the finished sand.

[0017] 3. In this hammerless sand mill, after the stone is crushed, it falls through the gap onto the adjacent lower throwing disc. Since the diameter of the lower throwing disc is larger than the diameter of the adjacent upper throwing disc, the linear velocity of the edge of the lower throwing disc is greater than that of the edge of the adjacent upper throwing disc. This results in different centrifugal forces when the stone is thrown out of the throwing disc. The smaller the stone particle size, the greater the force required for crushing. Therefore, larger stones are easier to crush and are crushed on the guide plate corresponding to the upper throwing disc with a lower linear velocity. The smaller stones then fall onto the guide plate corresponding to the lower throwing disc with a higher linear velocity for further crushing, making the crushing more precise and preventing excessive powder production due to over-crushing.

[0018] 4. In this hammerless sand mill, after the stone enters the lower casing through the feed pipe, it is evenly dispersed onto the throwing disc under the action of the distribution disc. When the throwing disc rotates, the evenly dispersed stone on its upper part is thrown out towards the corresponding liner plate. The stone hits the corresponding liner plate and falls onto the corresponding guide plate to form a stone pile. At the same time, by setting the throwing plate, the force of the stone being thrown out of the throwing disc can be increased, thereby increasing the force of the stone hitting the stone pile and ensuring the efficiency and effect of stone crushing.

[0019] 5. In this hammerless sand mill, small-diameter stone particles fall directly through the strip-shaped holes to form a waterfall; large-diameter stone particles fall in a parabolic trajectory through the gap between the throwing disc and the guide plate to the next throwing disc. When large-diameter stone particles are thrown out of the throwing disc, they will be accelerated and impact the waterfall, thus forming an impact; while large-diameter stone particles that do not impact the waterfall continue forward and impact the pile of stones accumulated on the guide plate, forming an impact and achieving a better crushing effect; similarly, the arc-shaped plate located on the lower side of the bearing seat in this utility model can protect the bearing seat and prevent the stone particles on the guide plate from jumping up and impacting the bearing seat, causing damage to the bearing seat. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a hammerless mechanical sand mill provided in an embodiment of this utility model; Figure 2This is a cross-sectional structural schematic diagram of a hammerless mechanical sand mill provided in an embodiment of the present invention; Figure 3 This utility model provides a hammerless mechanical sand mill. Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the lower casing of a hammerless mechanical sand mill provided in this embodiment of the present invention when it is opened.

[0021] In the attached diagram: 1. Machine casing; 11. Lower machine casing; 111. Side door; 112. Connecting seat; 113. Telescopic rod; 114. Lifting eye bolt; 115. Bearing seat; 12. Top cover; 121. Connecting arm; 122. Hinge seat; 13. Discharge pipe; 14. Feed pipe; 2. Main shaft; 21. First pulley; 22. Drive motor; 23. Second pulley; 24. Transmission belt; 3. Crushing mechanism; 31. Discharge plate; 32. Discharge plate; 33. Distribution plate; 4. Guide plate; 41. Arc plate; 42. Strip hole; 43. Protective plate; 5. Drop gap; 6. Liner plate; 7. Base. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0023] First refer to Figure 1 and Figure 2 ,according to Figure 1 and Figure 2 As can be seen, the present invention includes a vertically arranged cylindrical housing 1, and a first pulley 21 is provided at the bottom of the housing 1. The first pulley 21 is fixedly sleeved on the bottom end of the main shaft 2 and rotates through a drive mechanism.

[0024] Continue to refer to Figure 1 and Figure 2 The present invention also includes a base 7, a housing 1 and a drive mechanism, both of which are mounted on the base 7. In a specific arrangement, a drive motor 22 can be arranged on one side of the housing 1. The output shaft of the drive motor 22 is fixedly fitted with a second pulley 23. The second pulley 23 is connected to the first pulley 21 through a transmission belt 24. The drive motor 22 and the housing 1 are respectively arranged at both ends of the base 7.

[0025] Furthermore, the number of drive motors 22 can be arranged as two. The output shaft of each drive motor 22 is fixedly fitted with a second pulley 23. Each second pulley 23 is connected to the first pulley 21 through a transmission belt 24. The housing 1 is arranged in the middle of the base 7, and the two drive motors 22 are symmetrically arranged on both sides of the housing 1 and located at both ends of the base 7 respectively.

[0026] In this utility model, the housing 1 is arranged according to reference... Figure 1 It can be seen that the housing 1 includes a lower housing 11 with a side door 111 hinged to its side wall. A top cover 12 is connected to the top of the lower housing 11. A vertical feed pipe 14 is fixedly connected to the center of the top cover 12. Multiple matching lining plates 6 are bolted to the inner walls of both the lower housing 11 and the top cover 12. The specific arrangement of the top cover 12 in this utility model can be further referenced. Figure 1 It is known that a connecting arm 121 is fixedly connected to the top of the top cover 12, and a vertically arranged telescopic rod 113 is fixedly connected to the side wall of the lower housing 11 via a connecting seat 112. This telescopic rod 113 can be a hydraulic rod, electric rod, or pneumatic rod commonly used in the prior art. The top end of the telescopic rod 113 is fixedly connected to the end of the connecting arm 121 away from the top cover 12. To make the connection between the top cover 12 and the lower housing 11 more secure, refer to... Figure 1 The top edge of the top cover 12 is evenly distributed with multiple eye bolts 114 that are hinged to the lower housing 11. The bottom edge of the top cover 12 is fixedly connected to a hinge seat 122 corresponding to the position of each eye bolt 114. Each hinge seat 122 has a receiving groove for accommodating the eye bolt 114. When the telescopic rod 113 brings the top cover 12 into contact with the lower housing 11, the eye bolts 114 are rotated until they enter the receiving grooves. Then, an eye nut is screwed into the end of the eye bolt 114 away from the upper housing 1 until the eye nut is tightly fitted with the hinge seat 122. This tight fit between the eye bolts 114 and the eye nut secures the top cover 12 and the lower housing 11 more firmly. Simultaneously, the eye nut allows for easier hanging of the device on a hook when it needs to be moved, facilitating its movement.

[0027] In this utility model, the side door 111 is arranged with reference to... Figure 4 As can be seen, in this utility model, the lower housing 11 is provided with an inspection port corresponding to each side door 111, and the lower housing 11 is hinged with a side door 111 for closing the inspection port. Specifically, one side of the side door 111 is hinged to the lower housing 11, and the other side of the side door 111 is connected to the lower housing 11 in the same way as the top cover 12 and the lower housing 11. However, in this utility model, the side door 111 opens in a horizontal direction and rotates, while the top cover 12 opens in a vertical direction.

[0028] In this invention, multiple sets of horizontally rotating crushing mechanisms 3 are arranged sequentially from top to bottom at the center position inside the lower casing 11. The specific number of crushing mechanisms 3 can be flexibly adjusted according to the particle size of the finished sand to be produced. (Refer to this embodiment) Figure 2 and Figure 3 It can be seen that the crushing mechanism 3 is arranged in three groups from top to bottom. Each group of crushing mechanism 3 includes a horizontally rotating throwing disc 31. Each throwing disc 31 has multiple throwing plates 32 fixedly connected to its edge, which are arranged radially along the corresponding throwing disc 31. Specifically, the uppermost throwing disc 31 has the smallest diameter, and the diameters of the three throwing discs 31 increase sequentially from top to bottom, with the lowermost throwing disc 31 having the largest diameter. At the same time, the center of the uppermost throwing disc 31, corresponding to the position of the feed pipe 14, is fixedly connected to an upwardly protruding distribution disc 33 by bolts. The distribution disc 33 is arranged in a conical shape. In this embodiment, the throwing plate 32 located on the uppermost throwing disc 31 extends towards and contacts the distribution disc 33 at its center, while the throwing plates 32 located on the second and third layers are only located at the edge of the corresponding throwing disc 31.

[0029] Because the diameter of the lower throwing disc 31 is larger than the diameter of the adjacent upper throwing disc 31, the linear velocity of the edge of the lower throwing disc 31 is greater than that of the edge of the adjacent upper throwing disc 31, resulting in different centrifugal forces when the stone is thrown from the throwing disc 31. To further enhance the centrifugal force when the stone is thrown from the throwing disc 31, the throwing plate 32 in this embodiment can be set in an arc shape, and the bending direction of the arc-shaped throwing plate 32 is the same as the rotation direction of the throwing disc 31. When the stone is thrown from the throwing disc 31, it is thrown along the throwing plate 32, and the arc-shaped arrangement of the throwing plate 32 can further increase the linear velocity of the stone when it is thrown from the throwing disc 31, thereby enhancing the centrifugal force when the stone is thrown from the throwing disc 31.

[0030] In this embodiment, in order to facilitate the rotation of the three throwing discs 31, a main shaft 2 is vertically arranged at the center of the lower housing 111. The throwing discs 31 corresponding to the three crushing mechanisms 3 are fixedly sleeved on the main shaft 2 in sequence, and the uppermost throwing disc 31 is located at the top of the main shaft 2. The material distribution disc 33 corresponding to the uppermost throwing disc 31 is located at the upper part of the top of the main shaft 2.

[0031] In this invention, each crushing mechanism 3 is surrounded by horizontally arranged guide plates 4 fixedly connected to the inner wall of the lower casing 11. Specifically, in this embodiment, there is a falling gap 5 between the guide plate 4 and the central throwing disc 31, through which the crushed stone falls; at the same time, the size of the falling gap 5 should be slightly larger than the particle size of the crushed stone, but smaller than the size of the original stone. In this embodiment, the falling gap 5 between the lower throwing disc 31 and the corresponding guide plate 4 is smaller than the falling gap 5 between the adjacent upper throwing disc 31 and the corresponding guide plate 4.

[0032] refer to Figure 4 As can be seen, in this embodiment, the guide plates 4 are arranged in a ring shape, and each guide plate 4 is composed of multiple arc-shaped plates 41. The bending direction of each arc-shaped plate 41 is adapted to the opening direction of the side door 111. Therefore, when the side door 111 is opened, the arc-shaped plates 41 on the side door 111 will also move to the outside of the inspection port along with the side door 111. In this embodiment, each arc-shaped plate 41 has a strip hole 42 along its arc direction to facilitate the falling of crushed stones. At the same time, each arc-shaped plate 41 is fixedly connected to the bearing seat 115, which is horizontally fixed on the lower housing 11 or the inner wall of the side door 111, by bolts. In order to protect the bearing seat 115 from the impact of the stones jumping up and down on the guide plates 4 below, an arc-shaped plate 41 is also fixedly connected to the bottom of the bearing seat 115. At the same time, the strip holes 42 of the arc-shaped plates 41 on the upper and lower sides of the bearing seat 115 are aligned in the vertical direction.

[0033] Meanwhile, to save costs, there is no need to arrange the arc plate 41 below the bottommost guide plate 4. In this embodiment, there is no need to arrange the arc plate 41 below the guide plate 4 located on the third bottom layer.

[0034] refer to Figure 2 and Figure 3 As can be seen, in this utility model, the bottom of the lower housing 11 is symmetrically arranged on both sides of the main shaft 2 with discharge pipes 13 connected to the lower housing 11.

[0035] The working principle of this hammerless sand mill is as follows: When this utility model is in use, the first belt pulley 21 and the main shaft 2 are driven to rotate by the drive motor 22. The rotating main shaft 2 drives the crushing mechanism 3 to rotate synchronously. Then, stones are added into the feed pipe 14. The stones fall onto the distribution plate 33 and are evenly dispersed on the uppermost throwing plate 31 under the action of the distribution plate 33. The material is thrown towards the corresponding lower casing 11 liner 6 under the action of the rotating throwing plate 31 and throwing plate 32 and forms a stone pile on the corresponding guide plate 4. When the subsequently thrown stones collide with the formed stone pile, they will be initially crushed into stone particles.

[0036] After initial crushing, the stone particles fall through the drop gap 5 onto the adjacent throwing disc 31 below under the action of the guide plate 4. The throwing disc 31 below then throws the received stone particles onto the liner 6 of the corresponding lower casing 11 to form a stone pile. The subsequent stone particles collide with the stone pile and are broken into smaller particles.

[0037] Meanwhile, small-diameter stones fall directly through the strip-shaped holes 42 to form a waterfall; large-diameter stones fall in a parabolic manner through the falling gap 5 between the throwing disc 31 and the guide plate 4 to the next throwing disc 31. When the large-diameter stones are thrown out of the throwing disc 31, they will be accelerated and impact the waterfall, thus forming an impact; while the large-diameter stones that do not impact the waterfall continue to move forward and impact the pile of stones accumulated on the guide plate 4, forming an impact and achieving a better crushing effect.

[0038] Repeat the above process in sequence. The stone will be crushed into finished sand of suitable particle size by the crushing mechanism 3 at the bottom. The finished sand will be discharged to the outside of the lower casing 11 through the discharge pipe 13, thus completing the entire sand making process.

[0039] In the above embodiments, this utility model provides a hammerless sand mill. In this utility model, the stone material entering the machine casing is crushed by the crushing mechanism located above and thrown out to the corresponding guide plate. The first stone material thrown out forms a pile on the guide plate, and the stone material thrown out later impacts the pile at high speed and is crushed into larger stone particles. The crushed stone particles fall through the gap to the adjacent lower crushing mechanism, and are crushed again by stone-on-stone crushing. The lowest crushing mechanism crushes the stone particles to a suitable particle size. At the same time, since the crushing of stone material and stone particles is completed by stone-on-stone crushing, there is no need for hammers, thereby avoiding the use and subsequent maintenance and replacement of hammers, reducing costs. In addition, in this utility model, the stone material or stone particles only collide with the liner plate when the stone pile is initially formed on the guide plate. During the subsequent stone-on-stone crushing process, the stone material or stone particles no longer collide with the liner plate, thereby minimizing the wear of the liner plate and reducing metal impurities in the finished sand, ensuring the quality of the finished sand.

[0040] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A hammerless sand mill, comprising a cylindrical casing (1) vertically arranged consisting of a lower casing (11) and a top cover (12) located above the lower casing (11) and hinged to it, wherein the inner walls of the lower casing (11) and the top cover (12) are provided with lining plates (6), characterized in that: The lower casing (11) is provided with multiple sets of crushing mechanisms (3) that can crush stone in sequence and rotate. The outer side of the crushing mechanism (3) in the lower casing (11) is provided with a guide plate (4) that corresponds to each of the multiple sets of crushing mechanisms (3). A falling gap (5) is provided between the guide plate (4) and the corresponding crushing mechanism (3). The particle size of the stone particles formed by the crushing mechanism (3) located below is smaller than the particle size of the stone particles formed by the crushing mechanism (3) above.

2. The hammerless mechanical sand mill according to claim 1, characterized in that: The multiple sets of crushing mechanisms (3) are all driven to rotate horizontally by a vertical main shaft (2). Each set of crushing mechanisms (3) includes a horizontal throwing disc (31) fixedly sleeved on the main shaft (2), and multiple vertical throwing plates (32) are arranged along the radial direction of the throwing disc (31). Among them, the diameter of the throwing disc (31) located below is larger than the diameter of the adjacent upper throwing disc (31).

3. The hammerless mechanical sand mill according to claim 2, characterized in that: The center of the uppermost material-discharging disc (31) is opposite to the outlet of the feed pipe (14) set on the top cover (12), and a cone-shaped upward-convex material-distributing disc (33) is set at the center of the uppermost material-discharging disc (31).

4. The hammerless mechanical sand mill according to claim 1, characterized in that: The drop gap (5) between the lower crushing mechanism (3) and the corresponding guide plate (4) is smaller than the drop gap (5) between the adjacent upper crushing mechanism (3) and the corresponding guide plate (4).

5. A hammerless mechanical sand mill according to claim 1, characterized in that: Each of the aforementioned guide plates (4) includes multiple arc-shaped plates (41) horizontally fixed on the inner wall of the lower housing (11) for guiding the upper guide plate (4) to the adjacent lower crushing mechanism (3). Multiple arc-shaped plates (41) are spliced ​​together to form a guide plate (4) with a material discharge channel in the center. Each arc-shaped plate (41) has a through-thickness strip hole (42).

6. A hammerless mechanical sand mill according to claim 5, characterized in that: A ring of bearing seats (115) is provided on the inner wall of the lower housing (11). Arc plates (41) are fixed on the upper and lower edges of the inner edge of the bearing seats (115), and the strip holes (42) of the two arc plates (41) on the same bearing seat (115) are opposite each other.

7. A hammerless mechanical sand mill according to claim 3, characterized in that: The top cover (12) has a feed port that is fixedly connected to the feed pipe (14), and the bottom of the lower casing (11) has a discharge port.

8. A hammerless mechanical sand mill according to claim 7, characterized in that: The discharge port is located around the main shaft (2), and a partition is provided between the discharge port and the main shaft (2).

9. A hammerless mechanical sand mill according to claim 2, characterized in that: The lower housing (11) is fixed at the center of the base (7), and the main shaft (2) extends downward to the lower housing (11) and is driven by the drive motor (22) on the base (7).

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