Dry-method machine-made sand manufacturing equipment
By optimizing the crushing box and screening structure of the dry-process manufactured sand equipment, efficient crushing and particle classification screening of stone materials are achieved, solving the problems of poor screening effect and complex drive components in traditional equipment, and improving the stability and ease of operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG HULU SANDSTONE CO LTD
- Filing Date
- 2025-02-21
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional dry-process manufactured sand equipment has poor screening effect, simple screening structure design makes it difficult to achieve rapid and efficient particle classification, and complex drive components increase maintenance costs and reduce equipment reliability and stability.
By optimizing the design of the crushing box, guide plate and crushing roller, accurate crushing of stone is achieved; multi-stage screen plates are used for particle classification and screening, and the structure of the drive components, including motor, rotating shaft, synchronous wheel and cam, is simplified to ensure stable drive and screening operation of the equipment.
It improves crushing and screening efficiency, enhances sand quality and equipment reliability, reduces maintenance costs, and increases the ease of operation and practicality of the equipment.
Smart Images
Figure CN224180939U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sand and gravel processing technology, and in particular relates to a dry-process manufactured sand equipment. Background Technology
[0002] In the sand and gravel processing industry, dry-process manufactured sand equipment is an important tool for crushing and screening stone into sand of different particle sizes. However, traditional dry-process manufactured sand equipment still has the following problems in use:
[0003] Traditional dry-process manufactured sand equipment does not perform well in screening sand. Its screening structure is relatively simple, making it difficult to achieve rapid and efficient grading and screening of sand with different particle sizes. In addition, the drive components of traditional equipment are usually more complex, which not only increases the maintenance cost of the equipment, but also reduces the reliability and stability of the equipment. Utility Model Content
[0004] The purpose of this invention is to provide a dry-process manufactured sand equipment. This equipment significantly improves crushing and screening performance. Optimized design ensures precise feeding of stone into the crushing rollers, achieving efficient and uniform crushing. Multi-stage screening plates with different apertures effectively classify and screen sand, improving product quality. The simplified drive assembly structure ensures stable driving of crushing and screening operations. Different discharge plate designs facilitate classified collection, enhancing practicality. Overall, this equipment simplifies the structure, reduces maintenance costs, improves sand and gravel processing efficiency and quality, and solves existing technical problems.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] A dry-process manufactured sand equipment, comprising:
[0007] The crushing box has a feed inlet at the top for inputting stone materials. A guide plate is inclinedly arranged inside the feed inlet and is fixedly connected to the inner wall of the crushing box. A discharge outlet is provided on one side of the crushing box for discharging the produced sand.
[0008] It also includes two first rotating shafts, both of which are rotatably mounted inside the crushing box. Crushing rollers are fixedly sleeved on the outer walls of both first rotating shafts. The two crushing rollers cooperate with each other to crush the input stone. Both crushing rollers cooperate with one end of the guide plate to ensure accurate input and crushing of the stone.
[0009] It also includes a screening assembly for grading and screening the produced sand according to different particle sizes;
[0010] It also includes a drive assembly for driving the two crushing rollers to rotate and simultaneously driving the screening assembly to move.
[0011] Optionally, the screening assembly includes a partition fixedly installed inside the crushing chamber. A first screening plate, a second screening plate, and a third screening plate are inclinedly arranged on one side of the partition. The first, second, and third screening plates are arranged in descending order of height and are all located below the two crushing rollers. Multiple screening holes are formed inside the first and second screening plates. The diameter of the multiple screening holes inside the first screening plate is larger than the diameter of the multiple screening holes inside the second screening plate. The lower of the first, second, and third screening plates... Both ends are through the discharge port. The first and second screening plates are slidably connected to the inner wall of the discharge port. One side of the third screening plate is fixedly connected to one side of the partition. Multiple through holes are opened on one side of the partition. Two connecting plates are provided inside the crushing box. Both connecting plates are located on the side of the partition away from the discharge port. One side of each connecting plate is penetrated by a connecting block through a corresponding through hole. The two connecting plates are fixedly connected to one side of the first and second screening plates respectively through the connecting blocks. Two fixing rods are fixedly installed on the bottom inner wall of the crushing box. Both connecting plates are slidably connected to the two fixing rods.
[0012] Optionally, the drive assembly includes a second rotating shaft that rotates through the crushing chamber. The second rotating shaft is located above two connecting plates. A motor is fixedly installed on one side of the crushing chamber. One end of the output shaft of the motor is fixedly connected to one end of the second rotating shaft. A double-groove synchronous pulley is fixedly installed on the other end of the second rotating shaft. The double-groove synchronous pulley is located outside the crushing chamber. One end of each of the two first rotating shafts rotates through one side of the crushing chamber. Gears are fixedly sleeved on the outer walls of both first rotating shafts. Both gears are located outside the crushing chamber and mesh with each other. A second synchronous pulley is fixedly sleeved on the outer wall of one of the first rotating shafts. The second synchronous pulley and the double-groove synchronous pulley are connected by a synchronous belt drive.
[0013] Optionally, the drive assembly further includes a third rotating shaft that rotatably passes through one side of the crushing chamber. One end of the third rotating shaft extends into the crushing chamber and is rotatably connected to the inner wall of one side of the crushing chamber. The third rotating shaft is located between two connecting plates. Two cams are fixedly sleeved on the outer wall of the third rotating shaft, and both cams cooperate with two adjacent connecting plates. Two fixing rings are fixedly sleeved on the outer walls of the two fixing rods. The two connecting plates are located between two adjacent fixing rings. Two springs are sleeved on the outer walls of the two fixing rods. Multiple springs are located between multiple fixing rings and adjacent connecting plates. One end of each spring is fixedly connected to one side of an adjacent fixing ring, and the other end of each spring is fixedly connected to one side of an adjacent connecting plate. A first synchronous pulley is fixedly sleeved on the outer wall of the third rotating shaft. The first synchronous pulley is located outside the crushing chamber, and the first synchronous pulley is connected to the double-groove synchronous pulley via a synchronous belt drive.
[0014] Optionally, a first discharge plate is fixedly installed on the lower side of the first screening plate, a second discharge plate is fixedly installed on the lower side of the second screening plate, and a third discharge plate is fixedly installed on the lower side of the third screening plate. The discharge ports of the first, second, and third discharge plates are all oriented differently to facilitate the collection of sand of different particle sizes screened out.
[0015] Optionally, side shells are fixedly installed on both sides of the crushing box, and the two side shells are used to protect the components on both sides of the crushing box.
[0016] Optionally, a baffle is provided inside the feed inlet. The baffle is fixedly connected to one side of the inner wall of the crushing box. The baffle cooperates with one end of the guide plate to ensure that the stone accurately enters between the two crushing rollers.
[0017] The embodiments of this utility model have the following beneficial effects:
[0018] In this invention, by rationally setting the crushing box, feed inlet, guide plate, crushing roller and other structures, effective crushing of stone is achieved; in particular, the design of the guide plate and crushing roller ensures that the stone can accurately enter between the two crushing rollers, thereby improving the crushing effect;
[0019] In this invention, the screening assembly includes a partition, a first screening plate, a second screening plate, and a third screening plate. By setting different screen holes, it achieves effective grading and screening of sand with different particle sizes. This design not only improves screening efficiency but also makes the quality of the screened sand more stable and reliable.
[0020] In this invention, the design of the drive assembly is simple and clear. Through the cooperation of the motor, the second rotating shaft, the double-groove synchronous wheel, and the second synchronous wheel, the two crushing rollers are driven. At the same time, through the setting of the third rotating shaft, the cam, and other structures, the material screening assembly is also driven. This design not only simplifies the equipment structure but also saves the equipment manufacturing cost and improves the reliability and stability of the equipment.
[0021] In this invention, the lower ends of the first, second, and third screening plates all penetrate through the discharge port and are slidably connected to the inner wall of the discharge port. This design allows the screened sand to be easily discharged from the equipment, improving the ease of operation. Furthermore, by setting the first, second, and third discharge plates with different discharge port orientations, it is convenient to collect sand of different particle sizes, further enhancing the practicality of the equipment.
[0022] In this invention, the side shell provides protection for the components on both sides of the crushing chamber, preventing equipment damage caused by external factors and extending the service life of the equipment.
[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.
[0026] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention.
[0027] Figure 3 This is a cross-sectional view of an embodiment of the present invention.
[0028] Figure 4 This is a schematic diagram of the drive component structure according to an embodiment of the present invention.
[0029] Figure 5 This is a schematic diagram of the sieve plate structure according to an embodiment of the present invention.
[0030] In the diagram: 1. Crushing box; 2. Feed inlet; 3. Discharge outlet; 4. Side shell; 5. Guide plate; 6. Baffle; 7. First rotating shaft; 8. Crushing roller; 9. Partition plate; 10. Through hole; 11. First screen plate; 12. Second screen plate; 13. Third screen plate; 14. Fixing rod; 15. Connecting plate; 16. Fixing collar; 17. Spring; 18. Cam; 19. Second rotating shaft; 20. Motor; 21. Third rotating shaft; 22. First synchronous pulley; 23. Double groove synchronous pulley; 24. Second synchronous pulley; 25. Gear; 26. First discharge plate; 27. Second discharge plate; 28. Third discharge plate. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0033] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0034] Example 1: Please refer to Figure 1-5 As shown in the figure, this embodiment provides a manufactured sand equipment, which mainly includes a crushing box 1, a feed inlet 2, a discharge outlet 3, a screening assembly, and a drive assembly.
[0035] In this embodiment, the crushing box 1 is the main body of the entire equipment, and its top has a feed inlet 2 for feeding stone into the crushing box 1. A guide plate 5 is inclinedly arranged inside the feed inlet 2, and the guide plate 5 is fixedly connected to the inner wall of the crushing box 1 to ensure that the stone can smoothly slide down the guide plate 5 into the crushing area. A discharge outlet 3 is located on one side of the crushing box 1 for discharging the finished sand.
[0036] In this embodiment, two first rotating shafts 7 are arranged inside the crushing box 1. Both first rotating shafts 7 are rotatably arranged inside the crushing box 1, and crushing rollers 8 are fixedly sleeved on their outer walls. The two crushing rollers 8 cooperate with each other to crush the input stone. It is worth noting that both crushing rollers 8 cooperate with one end of the guide plate 5 to ensure that the stone can be accurately fed into the crushing area.
[0037] To classify and screen the produced sand, a screening assembly is also provided in this embodiment. The screening assembly includes a partition 9 fixedly installed inside the crushing chamber 1. A first screening plate 11, a second screening plate 12, and a third screening plate 13 are inclinedly arranged on one side of the partition 9. These three screening plates are arranged in descending order and are all located below the two crushing rollers 8. The first screening plate 11 and the second screening plate 12 each have multiple screen holes inside, and the diameter of the screen holes inside the first screening plate 11 is larger than the diameter of the screen holes inside the second screening plate 12. In this way, when the sand falls from below the crushing rollers 8, it will pass through the first screening plate 11, the second screening plate 12, and fall onto the third screening plate 13 in sequence, thereby realizing the classification and screening of sand with different particle sizes.
[0038] To drive the two crushing rollers 8 to rotate and to move the screening assembly, a drive assembly is also provided in this embodiment. The drive assembly includes a second rotating shaft 19 that rotates through the crushing chamber 1, and the second rotating shaft 19 is located above the two connecting plates 15. A motor 20 is fixedly installed on one side of the crushing chamber 1, and one end of the output shaft of the motor 20 is fixedly connected to one end of the second rotating shaft 19. A double-groove synchronous pulley 23 is fixedly installed on the other end of the second rotating shaft 19, and the double-groove synchronous pulley 23 is located outside the crushing chamber 1.
[0039] Furthermore, one end of each of the two first rotating shafts 7 rotatably passes through one side of the crushing chamber 1, and gears 25 are fixedly fitted onto their outer walls. These two gears 25 are located outside the crushing chamber 1 and mesh with each other. A second synchronous pulley 24 is also fixedly fitted onto the outer wall of one of the first rotating shafts 7, and this second synchronous pulley 24 is connected to the double-groove synchronous pulley 23 via a synchronous belt drive. Thus, when the motor 20 starts, it drives the second rotating shaft 19 to rotate, which in turn drives one of the first rotating shafts 7 to rotate through the transmission action of the double-groove synchronous pulley 23 and the second synchronous pulley 24. Because the two gears 25 mesh with each other, the other first rotating shaft 7 will also rotate synchronously, thereby driving the two crushing rollers 8 to perform the crushing operation.
[0040] In addition, in this embodiment, the drive assembly also includes a third rotating shaft 21 that rotates through one side of the crushing chamber 1. One end of the third rotating shaft 21 extends into the crushing chamber 1 and is rotatably connected to the inner wall of one side of the crushing chamber 1. The third rotating shaft 21 is located between two connecting plates 15, and two cams 18 are fixedly sleeved on its outer wall. Both cams 18 cooperate with two adjacent connecting plates 15 to drive the connecting plates 15 to reciprocate up and down. To achieve this function, two fixing rods 14 are fixedly installed on the bottom inner wall of the crushing chamber 1, and the two connecting plates 15 are slidably connected to the two fixing rods 14. At the same time, two fixing collars 16 are fixedly sleeved on the outer walls of the two fixing rods 14, and the two connecting plates 15 are located between two adjacent fixing collars 16. In addition, two springs 17 are also sleeved on the outer walls of the two fixing rods 14, and these springs 17 are located between the multiple fixing collars 16 and the adjacent connecting plates 15. One end of the spring 17 is fixedly connected to one side of the adjacent fixing collar 16, and the other end is fixedly connected to one side of the adjacent connecting plate 15. In this way, when the cam 18 rotates, it will push the two connecting plates 15 to move up and down reciprocally, while the spring 17 plays a role in buffering and resetting.
[0041] Furthermore, a first synchronous pulley 22 is fixedly fitted onto the outer wall of the third rotating shaft 21. This first synchronous pulley 22 is located outside the crushing box 1 and is connected to the double-groove synchronous pulley 23 via a synchronous belt drive. Therefore, when the motor 20 starts, it not only drives the two crushing rollers 8 to rotate, but also drives the cam 18 to rotate through the transmission action of the first synchronous pulley 22, the double-groove synchronous pulley 23, and the third rotating shaft 21, thereby driving the screening assembly to move.
[0042] This application can be used in the field of sand and gravel processing technology, or in other fields applicable to this application.
[0043] Example 2: Reference Figure 2 , 3 5. Improvement based on Example 1: A dry-process manufactured sand equipment, which is applied to the field of sand and gravel processing technology;
[0044] In addition, in this embodiment, a baffle 6 is provided inside the feed inlet 2. The baffle 6 is fixedly connected to one side of the inner wall of the crushing box 1 and cooperates with one end of the guide plate 5 to further ensure that the stone can accurately enter between the two crushing rollers 8.
[0045] To facilitate the collection of the screened sand, in this embodiment, a first discharge plate 26 is fixedly installed on the lower side of the first screen plate 11, a second discharge plate 27 is fixedly installed on the lower side of the second screen plate 12, and a third discharge plate 28 is fixedly installed on the lower side of the third screen plate 13. The discharge ports of these three discharge plates have different orientations, thus facilitating the separate collection of sand with different particle sizes.
[0046] In order to protect the components on both sides of the crushing chamber 1, in this embodiment, side shells 4 are fixedly installed on both sides of the crushing chamber 1.
[0047] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 20 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.
[0048] The usage process and working principle of this utility model technical solution are as follows:
[0049] In use, the user needs to pre-process the stone into appropriately sized blocks. Then, the user can start the motor 20, which drives the double-groove synchronous wheel 23 to rotate via the second rotating shaft 19. The double-groove synchronous wheel 23 drives the two first rotating shafts 7 to rotate, thereby causing the two crushing rollers 8 to rotate synchronously. The user can then discharge the pre-processed stone onto the guide plate 5. The pre-processed stone will fall along the inclined surface of the guide plate 5 between the two crushing rollers 8 and be crushed to form sand. The sand will then fall onto the first screen plate 11 below and be screened once through the sieve holes in the first screen plate 11. The sand after being screened by the first screen plate 11 will fall onto the second screen plate 12 and be screened again through the sieve holes in the second screen plate 12. Finally, the remaining sand will fall onto the third screen plate 13 and be discharged from the outlet 3 along with the screened material from the first screen plate 11 and the second screen plate 12. When the device is working, the double-groove synchronous wheel 23 can also drive the third rotating shaft 21 to rotate via the synchronous belt. At this time, the two cams 18 on the third rotating shaft 21 will rotate synchronously with the third rotating shaft 21. When the two cams 18 rotate, they will abut against the two adjacent connecting plates 15 through their protrusions and separate them. At the same time, under the action of multiple springs 17, the two connecting plates 15 can quickly reset when they are not abutted. Therefore, as the third rotating shaft 21 rotates continuously, the two connecting plates 15 will continuously rise and fall, and drive the first screening plate 11 and the second screening plate 12 connected to it to move synchronously, which can improve the screening effect of sand. After screening, the sand will fall along the corresponding first screening plate 11, second screening plate 12, and third screening plate 13 into the corresponding first discharge plate 26, second discharge plate 27, and third discharge plate 28. Users only need to set up containers below the corresponding discharge ports in advance to complete the collection of sand of different particle sizes.
[0050] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.
[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0052] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A dry-process manufactured sand equipment, characterized in that, include: The crushing box (1) has a feed inlet (2) at the top, which is used to input stone. A guide plate (5) is inclinedly arranged inside the feed inlet (2), which is fixedly connected to the inner wall of the crushing box (1). A discharge port (3) is opened on one side of the crushing box (1) for discharging the produced sand. It also includes two first rotating shafts (7), both of which are rotatably disposed inside the crushing box (1). The outer walls of both first rotating shafts (7) are fixedly fitted with crushing rollers (8). The two crushing rollers (8) cooperate with each other to crush the input stone. Both crushing rollers (8) cooperate with one end of the guide plate (5) to ensure accurate input and crushing of the stone. It also includes a screening assembly for grading and screening the produced sand according to different particle sizes; It also includes a drive assembly for driving the two crushing rollers (8) to rotate and simultaneously driving the screening assembly to move.
2. The dry-process manufactured sand equipment as described in claim 1, characterized in that, The screening assembly includes a partition (9) fixedly installed inside the crushing box (1). A first screening plate (11), a second screening plate (12), and a third screening plate (13) are inclinedly arranged on one side of the partition (9). The first screening plate (11), the second screening plate (12), and the third screening plate (13) are arranged in descending order of height. The first screening plate (11), the second screening plate (12), and the third screening plate (13) are all located below the two crushing rollers (8). The first screening plate (11) and the second screening plate (12) have multiple screen holes inside. The aperture of the multiple screen holes inside the first screening plate (11) is larger than the aperture of the multiple screen holes inside the second screening plate (12). The lower end of the first screening plate (11), the second screening plate (12), and the third screening plate (13) all penetrate through... The discharge port (3) is slidably connected to the inner wall of the discharge port (3) by the first screen plate (11) and the second screen plate (12). One side of the third screen plate (13) is fixedly connected to one side of the partition plate (9). One side of the partition plate (9) is provided with multiple through holes (10). Two connecting plates (15) are provided in the crushing box (1). The two connecting plates (15) are located on the side of the partition plate (9) away from the discharge port (3). One side of the two connecting plates (15) is penetrated by the corresponding through holes (10) through the connecting blocks. The two connecting plates (15) are fixedly connected to one side of the first screen plate (11) and the second screen plate (12) respectively through the connecting blocks. Two fixing rods (14) are fixedly installed on the bottom inner wall of the crushing box (1). The two connecting plates (15) are slidably connected to the two fixing rods (14).
3. The dry-process manufactured sand equipment as described in claim 2, characterized in that, The drive assembly includes a second rotating shaft (19) that rotates through the crushing box (1). The second rotating shaft (19) is located above two connecting plates (15). A motor (20) is fixedly installed on one side of the crushing box (1). One end of the output shaft of the motor (20) is fixedly connected to one end of the second rotating shaft (19). A double-groove synchronous pulley (23) is fixedly installed on the other end of the second rotating shaft (19). The double-groove synchronous pulley (23) is located outside the crushing box (1). One end of each of the two first rotating shafts (7) rotates through one side of the crushing box (1). Gears (25) are fixedly sleeved on the outer walls of each of the two first rotating shafts (7). Both gears (25) are located outside the crushing box (1) and mesh with each other. A second synchronous pulley (24) is fixedly sleeved on the outer wall of one of the first rotating shafts (7). The second synchronous pulley (24) and the double-groove synchronous pulley (23) are connected by a synchronous belt drive.
4. The dry-process manufactured sand equipment as described in claim 3, characterized in that, The drive assembly also includes a third rotating shaft (21) that rotates through one side of the crushing box (1). One end of the third rotating shaft (21) extends into the crushing box (1) and is rotatably connected to the inner wall of one side of the crushing box (1). The third rotating shaft (21) is located between two connecting plates (15). Two cams (18) are fixedly sleeved on the outer wall of the third rotating shaft (21), and both cams (18) cooperate with two adjacent connecting plates (15). Two fixing rings (16) are fixedly sleeved on the outer walls of the two fixing rods (14), and the two connecting plates (15) are located between two adjacent fixing rings (16). Between the two fixed rods (14), two springs (17) are fitted on the outer walls of each of the two fixed rods (14). Multiple springs (17) are located between multiple fixed collars (16) and adjacent connecting plates (15). One end of each spring (17) is fixedly connected to one side of the adjacent fixed collar (16), and the other end of each spring (17) is fixedly connected to one side of the adjacent connecting plate (15). The outer wall of the third rotating shaft (21) is fixedly fitted with a first synchronous wheel (22). The first synchronous wheel (22) is located outside the crushing box (1). The first synchronous wheel (22) and the double-groove synchronous wheel (23) are connected by a synchronous belt drive.
5. A dry-process manufactured sand equipment as described in claim 2, characterized in that, A first discharge plate (26) is fixedly installed on the lower side of the first screening plate (11), a second discharge plate (27) is fixedly installed on the lower side of the second screening plate (12), and a third discharge plate (28) is fixedly installed on the lower side of the third screening plate (13). The discharge ports of the first discharge plate (26), the second discharge plate (27), and the third discharge plate (28) are all oriented differently, which is to facilitate the collection of sand of different particle sizes screened out.
6. The dry-process manufactured sand equipment as described in claim 4, characterized in that, The crushing box (1) is fixedly installed with side shells (4) on both sides, and the two side shells (4) are used to protect the components on both sides of the crushing box (1).
7. A dry-process manufactured sand equipment as described in claim 1, characterized in that, A baffle (6) is provided inside the feed inlet (2). The baffle (6) is fixedly connected to the inner wall of one side of the crushing box (1). The baffle (6) cooperates with one end of the guide plate (5) to ensure that the stone material accurately enters between the two crushing rollers (8).