Four-shaft sand making machine

Abstract

The utility model discloses a four-shaft sand making machine. The four-shaft sand making machine comprises an embedded steel frame, the sand making machine main body is mounted on the embedded steel frame, the sand making machine main body comprises a shell, a first-stage crushing cavity and a second-stage crushing cavity which are communicated with each other are formed in the shell, two groups of roller tooth pieces are rotationally arranged in each of the first-stage crushing cavity and the second-stage crushing cavity, the two groups of roller tooth pieces in the first-stage crushing cavity are the same in rotating direction, and the two groups of roller tooth pieces in the second-stage crushing cavity are the same in rotating direction. The rotation directions of the two groups of roller tooth pieces in the secondary crushing cavity are opposite; the first-stage crushing cavity and the second-stage crushing cavity are formed in the shell, the rotation direction of a roller tooth piece in the second-stage crushing cavity can be adjusted, the rotation direction can be set according to the particle size of crushed sand, and when the rotation direction of the roller tooth piece in the second-stage crushing cavity is the same as the rotation direction of the roller tooth piece in the first-stage crushing cavity, the roller tooth piece in the second-stage crushing cavity can be adjusted; and the crushed gravel in the first-stage crushing cavity can be further consolidated and crushed, and the situation that stones which do not participate in crushing are omitted is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of sand making machine technology, specifically relating to a four-shaft sand making machine. Background Technology

[0002] Traditional sand making machines mostly adopt a single-shaft or double-shaft structure, which has low crushing efficiency. The material is prone to uneven crushing in a single crushing chamber, resulting in a wide distribution of finished particle size. At the same time, the crushing particle size cannot be adjusted, and it is only suitable for crushing sand and gravel of a single particle size. In addition, the existing equipment has a fixed shell structure, making it difficult to maintain and replace internal parts, resulting in a short service life of the equipment. Utility Model Content

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a four-axis sand making machine.

[0004] The technical solution adopted in this utility model includes:

[0005] Pre-embedded steel frame;

[0006] The main body of the sand making machine is installed on the pre-embedded steel frame. The main body of the sand making machine includes a shell, in which a primary crushing chamber and a secondary crushing chamber are formed and interconnected. Two sets of roller teeth are rotatably arranged in the primary crushing chamber and the secondary crushing chamber, respectively. The two sets of roller teeth in the primary crushing chamber rotate in the same direction, and the two sets of roller teeth in the secondary crushing chamber rotate in opposite directions. The inner wall of the shell is provided with a liner, and a crushing gap is formed between the liner and the roller teeth.

[0007] The feed hopper is fixedly installed on the top of the housing, and one end of it is connected to the primary crushing chamber;

[0008] The discharge hopper is fixedly installed at the bottom of the housing, and one end of it is connected to the secondary crushing chamber.

[0009] As a preferred embodiment of this utility model, the housing includes an upper housing and a lower housing. The lower housing is fixedly installed with the pre-embedded steel frame. The upper housing is hinged to the lower housing in a split configuration via a hinged seat. A hydraulic cylinder is provided on the lower housing, and the two ends of the hydraulic cylinder are respectively hinged to the upper housing and the lower housing.

[0010] As a preferred embodiment of the present invention, a plurality of continuously distributed circular cavities are formed inside the housing, and the plurality of circular cavities are connected in sequence. The roller tooth is rotatably connected inside the circular cavity. A plurality of liner pads are fixedly provided on the inner wall of the circular cavity, and the plurality of liner pads are distributed in a ring array along the circular cavity. The liner is fixedly connected to the liner pads.

[0011] As a preferred embodiment of this invention, the roller tooth component includes...

[0012] The main shaft is rotatably connected inside the circular cavity, and its central axis coincides with the central axis of the circular cavity.

[0013] The turntable is fixedly connected to the main shaft;

[0014] Hammers are fixedly mounted on the turntable, and multiple hammers are arranged in a circular array along the end face of the turntable.

[0015] As a preferred embodiment of this utility model, the hammer and the liner are provided in multiple sets at equal intervals along the length of the circular cavity.

[0016] As a preferred embodiment of this utility model, the bottom of the pre-embedded steel frame is connected to a foundation bolt, and a first drive motor and a second drive motor are provided on one side of the foundation bolt. The first drive motor is used to drive the roller tooth to rotate in the forward direction, and the second drive motor is used to drive the roller tooth to rotate in the reverse direction.

[0017] As a preferred embodiment of this utility model, a feed inlet is formed at the top of the primary crushing chamber, the feed hopper is connected to the feed inlet, and a guide plate is provided inside the feed hopper. The installation height of one end of the guide plate on the housing is higher than the installation height of the other end on the housing.

[0018] As a preferred embodiment of this invention, a discharge port is formed at the bottom of the secondary crushing chamber, and the discharge hopper is connected to the discharge port.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model is a four-shaft sand making machine. It features a primary crushing chamber and a secondary crushing chamber within the casing. The rotation direction of the rollers in the secondary crushing chamber is adjustable, allowing the rotation direction to be set according to the particle size of the sand and gravel to be crushed. When the rotation direction of the rollers in the secondary crushing chamber is the same as that in the primary crushing chamber, the crushed sand and gravel in the primary crushing chamber can be further consolidated, preventing any uncrushed stones from being missed. When the primary crushing chamber cannot meet the required particle size, the rotation direction of the rollers in the secondary crushing chamber is controlled, causing the two sets of rollers to rotate relative to each other, creating a small crushing gap between them. This gap is used to further refine the particle size of the crushed sand and gravel, making the equipment suitable for producing sand and gravel of various particle sizes. Furthermore, by designing the outer casing to open outwards, it facilitates the replacement of worn roller parts and the cleaning of the crushing chamber, extending the equipment's service life and reducing operating costs. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the main structure of the sand making machine of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the main body of the sand making machine of this utility model;

[0026] Figure 5 This is a utility model Figure 4 A magnified structural diagram at point A in the diagram.

[0027] In the diagram: 1. Embedded steel frame; 2. Main body of the sand making machine; 3. Feed hopper; 4. Discharge hopper; 11. Anchor bolt; 21. Shell; 22. Primary crushing chamber; 23. Secondary crushing chamber; 24. Roller teeth; 25. Circular cavity; 31. Guide plate; 211. Upper shell; 212. Lower shell; 213. Hydraulic cylinder; 214. Hinge seat; 221. Feed inlet; 231. Discharge outlet; 241. Liner plate; 242. Liner plate pad; 243. Main shaft; 244. Turntable; 245. Hammer; 246. First drive motor; 247. Second drive motor. Detailed Implementation

[0028] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] The following is combined with Figure 1-5 This invention describes a specific embodiment of a four-shaft sand making machine, comprising:

[0031] The pre-embedded steel frame 1 can be embedded in the concrete structure layer using the connecting anchor bolts 11 to improve the stability of the main body 2 of the sand making machine during operation.

[0032] The main body 2 of the sand making machine is installed on the pre-embedded steel frame 1. The main body 2 includes a shell 21, within which a primary crushing chamber 22 and a secondary crushing chamber 23 are formed, which are interconnected. The primary crushing chamber 22 and the secondary crushing chamber 23 are used for crushing and grinding materials to different degrees. Two sets of roller teeth 24 are rotatably installed in each of the primary and secondary crushing chambers 22 and 23, respectively. The two sets of roller teeth 24 in the primary crushing chamber 22 rotate in the same direction. The co-rotation of the two sets of roller teeth 24 in the primary crushing chamber 22 causes the material to collide and be squeezed between the roller teeth 24 and the liner 241, achieving initial crushing of the material. Simultaneously, due to the… The left end of the primary crushing chamber 22 is connected to the secondary crushing chamber 23. The rotation of the roller teeth 24 allows for the material to be conveyed to the left. The two sets of roller teeth 24 within the secondary crushing chamber 23 rotate in opposite directions, causing the material to be impacted and sheared between the two sets of relatively rotating roller teeth 24. This results in the material being crushed by the compression between the roller teeth 24 and the liner plate 241 within the secondary crushing chamber 23, while the two sets of roller teeth 24 also subject the material to secondary compression and impact, further refining the material and controlling the finished particle size. The inner wall of the shell 21 is provided with a liner plate 241, forming a crushing gap between the liner plate 241 and the roller teeth 24.

[0033] The feed hopper 3 is fixedly installed on the top of the housing 21, and one end of it is connected to the primary crushing chamber 22. The feed hopper 3 is used for feeding materials and for conveying stones to the primary crushing chamber 22 and the secondary crushing chamber 23 for crushing.

[0034] The discharge hopper 4 is fixedly installed at the bottom of the housing 21, and one end of it is connected to the secondary crushing chamber 23. The discharge hopper 4 is used to output the refined finished product particle size.

[0035] Please refer to Figure 1 Figure 3 As shown, the housing 21 includes an upper housing 211 and a lower housing 21221. The lower housing 21221 is fixedly installed with the pre-embedded steel frame 1. The upper housing 211 is hinged to the lower housing 21221 in a split manner through a hinge seat 214, so that the housing 21 at the top of the primary crushing chamber 22 and the secondary crushing chamber 23 are both designed to be openable, so as to facilitate the cleaning of the interior of the primary crushing chamber 22 and the secondary crushing chamber 23 and the replacement of the liner 241. A hydraulic cylinder 213 is provided on the lower housing 21221. The two ends of the hydraulic cylinder 213 are respectively hinged to the upper housing 211 and the lower housing 21221. Since the upper housing 211 and the lower housing 21221 are hinged through the hinge seat 214, and the hydraulic cylinder 213 is hinged on the lower housing 21221, the hydraulic cylinder 213 can drive the upper housing 211 to open on the lower housing 21221.

[0036] Please refer to Figure 4 As shown, multiple continuously distributed circular cavities 25 are formed inside the shell 21. The multiple circular cavities 25 are connected in sequence. The roller tooth 24 is rotatably connected inside the circular cavities 25. Each pair of circular cavities 25 forms a crushing chamber. Multiple liner blocks 242 are fixedly provided on the inner wall of the circular cavity 25. The multiple liner blocks 242 are distributed in a ring array along the circular cavity 25. The liner 241 is fixedly connected to the liner blocks 242. The liner 241 is distributed in a ring array along the inner wall of the circular cavity 25, so that a crushing gap is formed between the liner 241 and the roller tooth 24 for material crushing. The rotation of the roller tooth 24 changes the finished particle size of the material during the conveying process.

[0037] Please refer to Figures 4-5 As shown, the roller tooth 24 includes

[0038] The main shaft 243 is rotatably connected inside the circular cavity 25, and its central axis coincides with the central axis of the circular cavity 25;

[0039] Turntable 244 is fixedly connected to the main shaft 243;

[0040] Hammerheads 245 are fixedly mounted on the turntable 244, and multiple hammerheads are arranged in a circular array along the end face of the turntable 244.

[0041] The main shaft 243 rotates within the circular cavity 25. The rotation of the main shaft 243 drives the turntable 244 fixed on it to rotate synchronously. Since the turntable 244 is fixed with hammers 245, when the hammers 245 rotate, they carry the material and move it. During the movement, due to the obstruction of the liner 241, the material is impacted, squeezed and sheared in the crushing gap formed between the liner 241 and the hammers 245, thereby crushing the stone.

[0042] Please refer to Figure 4 As shown, multiple sets of hammerheads 245 and liners 241 are equidistantly arranged along the length of the circular cavity 25 to improve the efficiency of material crushing.

[0043] Please refer to Figure 1As shown, the bottom of the pre-embedded steel frame 1 is connected to an anchor bolt 11. The anchor bolt 11 is used for the installation of the sand making machine body 2 on the concrete structure. By embedding one end of the anchor bolt 11 into the concrete structure layer before the concrete structure layer solidifies, a tensile force is provided above the concrete structure layer to fix the sand making machine body 2. A first drive motor 246 and a second drive motor 247 are provided on one side of the anchor bolt 11. The first drive motor 246 is used to drive the roller tooth 24 to rotate clockwise, and the second drive motor 247 is used to drive the roller tooth 24 to rotate in the opposite direction. The second drive motor 247 is a bidirectional drive motor. In the primary crushing chamber 22, the first drive motor 246 drives the roller tooth 24 to rotate clockwise in the circular cavity 25, so that the material is impacted and squeezed between the hammer 245 and the liner 241 to achieve material crushing. At the same time, the clockwise rotation of the roller tooth 24 in the primary crushing chamber 22 can realize the crushing of the material. Material is conveyed into the secondary crushing chamber 23. Within the secondary crushing chamber 23, the roller teeth 24 employ two crushing methods. The rotation direction of the roller teeth 24 within the secondary crushing chamber 23 can be controlled according to the required particle size of the sand and gravel. When the particle size requirement is low, the rotation direction of the roller teeth 24 within the secondary crushing chamber 23 can be controlled to be consistent with the rotation direction of the roller teeth 24 within the primary crushing chamber 22, thus preventing any material not yet processed in the primary crushing chamber 22 from being missed during crushing. When the particle size requirement is high, one of the roller teeth 24 within the secondary crushing chamber 23 can be reversed. The rotation of the roller teeth 24 causes the material to be crushed between the hammers 245 and the liner 241. Simultaneously, because the two roller teeth 24 inside rotate relative to each other, a grinding gap is formed between the two hammers 245 in the two sets of roller teeth 24. This gap is smaller than the gap between the hammers 245 and the liner 241, resulting in secondary grinding and crushing of the material to further refine the material and control the finished particle size.

[0044] Please refer to Figure 4 As shown, a feed inlet 221 is formed at the top of the primary crushing chamber 22. The feed hopper 3 is connected to the feed inlet 221. A guide plate 31 is provided inside the feed hopper 3. The installation height of one end of the guide plate 31 on the housing 21 is higher than the installation height of the other end on the housing 21. By fixing the guide plate 31 at an incline inside the feed hopper 3, the feeding speed of the material in the feed hopper 3 is accelerated, and material blockage is avoided in the feed hopper 3.

[0045] Please refer to Figure 4 As shown, a discharge port 231 is formed at the bottom of the secondary crushing chamber 23, and the discharge hopper 4 is connected to the discharge port 231. The discharge hopper 4 is used for discharging finished sand and gravel.

[0046] Working principle of this utility model:

[0047] Anchor bolts 11 are pre-embedded before the concrete structural layer solidifies to provide installation support points for the installation of the main body 2 of the sand making machine on the structural layer;

[0048] By feeding material into the feed hopper 3, the material stones are fed into the primary crushing chamber 22 in sequence under the guidance of the guide plate 31. The first drive motor 246 drives the two main shafts 243 in the primary crushing chamber 22 to rotate clockwise. The feed inlet 221 is located directly above the primary crushing chamber 22. The material enters the primary crushing chamber 22 directly through the feed inlet 221. Under the drive of the first drive motor 246, the material moves along the gap formed between the hammer 245 and the liner 241. During the movement, affected by the slow rotation of the main shaft 243, the stones are squeezed and collided by the hammer 245 and the liner 241, thus crushing the stones. In the primary crushing chamber 22, the two circular cavities 25 are interconnected. While the roller tooth 24 crushes the material, the roller tooth 24 also conveys the crushed material to the left, transporting it to the secondary crushing chamber 23.

[0049] After the material crushed in the primary crushing chamber 22 is conveyed to the secondary crushing chamber 23, the roller teeth 24 in the primary crushing chamber 22 are driven in two ways. When the particle size crushed in the primary crushing chamber 22 meets the crushing requirements, the roller teeth 24 in the secondary crushing chamber 23 rotates in the same direction as the roller teeth 24 in the primary crushing chamber 22, so that the material conveyed to the secondary crushing chamber 23 undergoes secondary crushing and grinding, the purpose of which is to crush the sand and gravel missed in the primary crushing chamber 22. When the particle size crushed in the primary crushing chamber 22 is larger than the actual required particle size, it can be driven by a second method. When motor 247 reverses, it causes the two sets of roller teeth 24 in the secondary crushing chamber 23 to rotate relative to each other. During the rotation, the two sets of roller teeth 24 can further crush the material by utilizing the gap formed between the hammer 245 and the liner 241. At the same time, since the two sets of roller teeth 24 in the secondary crushing chamber 23 rotate relative to each other, a finer crushing gap is formed between the two hammers 245. The crushed sand and gravel can be further ground and crushed through the smaller gap formed between the two hammers 245 to reduce the particle size of the finished sand and gravel to achieve the required particle size.

[0050] The polished material is output through hopper 4;

[0051] When cleaning the interior of the primary crushing chamber 22 or the secondary crushing chamber 23, or replacing the liner 241, the upper housing 211 is opened by controlling the hydraulic cylinder 213 to drive the upper housing 211 to rotate along the hinge point.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A four-shaft sand making machine, characterized in that, include: Pre-embedded steel frame; The main body of the sand making machine is installed on the pre-embedded steel frame. The main body of the sand making machine includes a shell, in which a primary crushing chamber and a secondary crushing chamber are formed and interconnected. Two sets of roller teeth are rotatably arranged in the primary crushing chamber and the secondary crushing chamber, respectively. The two sets of roller teeth in the primary crushing chamber rotate in the same direction, and the two sets of roller teeth in the secondary crushing chamber rotate in opposite directions. The inner wall of the shell is provided with a liner, and a crushing gap is formed between the liner and the roller teeth. The feed hopper is fixedly installed on the top of the housing, and one end of it is connected to the primary crushing chamber; The discharge hopper is fixedly installed at the bottom of the housing, and one end of it is connected to the secondary crushing chamber.

2. A four-shaft sand making machine according to claim 1, characterized in that: The housing includes an upper housing and a lower housing. The lower housing is fixedly installed with the pre-embedded steel frame. The upper housing is hinged to the lower housing in a split manner through a hinge seat. A hydraulic cylinder is provided on the lower housing, and the two ends of the hydraulic cylinder are respectively hinged to the upper housing and the lower housing.

3. A four-shaft sand making machine according to claim 1, characterized in that: Multiple continuously distributed circular cavities are formed inside the housing, and the multiple circular cavities are connected in sequence. The roller tooth is rotatably connected inside the circular cavity. Multiple liner pads are fixedly provided on the inner wall of the circular cavity. The multiple liner pads are distributed in a ring array along the circular cavity, and the liner is fixedly connected to the liner pads.

4. A four-shaft sand making machine according to claim 3, characterized in that, The roller tooth component includes The main shaft is rotatably connected inside the circular cavity, and its central axis coincides with the central axis of the circular cavity. The turntable is fixedly connected to the main shaft; Hammers are fixedly mounted on the turntable, and multiple hammers are arranged in a circular array along the end face of the turntable.

5. A four-shaft sand making machine according to claim 4, characterized in that: The hammer and the liner are arranged in multiple sets at equal intervals along the length of the circular cavity.

6. A four-shaft sand making machine according to claim 1, characterized in that: The bottom of the pre-embedded steel frame is connected to an anchor bolt. A first drive motor and a second drive motor are provided on one side of the anchor bolt. The first drive motor is used to drive the roller tooth to rotate in the forward direction, and the second drive motor is used to drive the roller tooth to rotate in the reverse direction.

7. A four-shaft sand making machine according to claim 1, characterized in that: The top of the primary crushing chamber has a feed inlet, and the feed hopper is connected to the feed inlet. A guide plate is provided inside the feed hopper, and the installation height of one end of the guide plate on the housing is higher than the installation height of the other end on the housing.

8. A four-shaft sand making machine according to claim 7, characterized in that: The bottom of the secondary crushing chamber has a discharge port, and the discharge hopper is connected to the discharge port.

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