A calcium carbonate granule raw material conveying device

Abstract

This utility model discloses a calcium carbonate granule raw material conveying device, including a frame, a conveyor belt, a material guiding assembly, and a discharge assembly. The frame is equipped with a first driving roller and a first redirecting roller. The conveyor belt is fitted onto the first driving roller and the first redirecting roller. The material guiding assembly includes a feed chute, a buffer trough, and a discharge guide plate. The feed chute is located on one side of the frame, and its outlet is connected to the buffer trough. The outlet of the buffer trough is connected to the discharge guide plate. The discharge assembly includes a baffle plate, a discharge guide block, and a collection trough. The baffle plate is vertically positioned between the outgoing and return sections of the conveyor belt, with its bottom end abutting against the surface of the return section. The discharge guide block is located in front of the baffle plate, and its two sides are provided with guiding ramps. The collection troughs are located on both sides of the discharge guide block. This utility model utilizes the return section of the conveyor belt to transport return material, eliminating the need for a dedicated return conveyor belt and requiring no additional space. This effectively improves equipment utilization and reduces the investment in additional return equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of calcium carbonate processing equipment, specifically to a calcium carbonate granule raw material conveying device. Background Technology

[0002] Heavy calcium carbonate is an important food additive. It is obtained by mechanically crushing and grinding natural carbonate minerals such as calcite, marble, and limestone. The ore raw materials transported from the mine are first coarsely crushed by a jaw crusher. The coarsely crushed ore then enters a fine hammer crusher for further crushing, yielding crushed stone of approximately 10mm. After screening, the crushed stone is then ground into powder by grinding equipment. In the processing of heavy calcium carbonate, the screening equipment is usually located above the fine hammer crusher. The crushed stone is conveyed to the top screening equipment by a bucket elevator. Qualified small particles are sent to the grinding chamber, while approximately 20% of the larger particles slide back to the crusher along the inclined pipe for further crushing. However, not all factories have the space to install screening equipment above the fine hammer crusher. The screening equipment and the fine hammer crusher need to be set up horizontally in different factories. This means that the crushed stone from the fine hammer crusher needs to be transported to the screening equipment by a raw material conveyor belt. The large particles of crushed stone screened out need to be returned to the crusher by a separate return conveyor belt for further crushing. Installing a separate return conveyor belt not only requires additional space but also results in high equipment investment costs and low utilization of the conveying equipment. Utility Model Content

[0003] The main purpose of this utility model is to overcome the defects of the above-mentioned background technology and provide a calcium carbonate granule raw material conveying device.

[0004] To achieve the above objectives, the present invention proposes a calcium carbonate granule raw material conveying device, comprising a frame, a conveyor belt, a material guiding assembly, and a material unloading assembly. The frame has a first driving roller and a first redirecting roller at its two ends, respectively. The conveyor belt is fitted onto the first driving roller and the first redirecting roller. The material guiding assembly is located at the beginning of the return section of the conveyor belt, and the material unloading assembly is located at the end of the return section of the conveyor belt. The material guiding assembly includes a feed chute, a buffer chute, and a discharge guide plate. The feed chute is configured with… On one side of the frame, the outlet of the feed chute extends above the return section of the conveyor belt and connects to the buffer trough. The outlet of the buffer trough is connected to the discharge guide plate. The unloading assembly includes a baffle plate, an unloading guide block, and a collection trough. The baffle plate is vertically arranged between the outgoing and return sections of the conveyor belt and its bottom end abuts against the belt surface of the return section. The unloading guide block is arranged on the front side of the baffle plate. The unloading guide block has guiding inclined surfaces on both sides. The collection troughs are respectively arranged on both sides of the unloading guide block.

[0005] To further optimize the technical solution, the feeding guide plate is divided into several flow channels.

[0006] To further optimize the technical solution, the frame is provided with a number of outgoing idlers and a number of return idlers. The outgoing idlers abut against the bottom surface of the outgoing section of the conveyor belt, and the return idlers abut against the bottom surface of the return section of the conveyor belt.

[0007] To further optimize the technical solution, a second redirecting roller and a third redirecting roller are respectively provided below the first drive roller and the first redirecting roller. A first tensioning roller is provided between the second redirecting roller and the return idler, and a second tensioning roller is provided between the third redirecting roller and the return idler. The conveyor belt passes over the top surface of the second redirecting roller, the bottom surface of the first tensioning roller, the top surface of the return idler, the bottom surface of the second tensioning roller, and the third redirecting roller.

[0008] To further optimize the technical solution, a second drive roller is provided between the return idler and the second tension roller. The roller surface of the second drive roller is horizontal to the roller surface of the return idler. A first drive component is connected to the rotating shaft of the first drive roller, and a second drive component is connected to the rotating shaft of the second drive roller.

[0009] To further optimize the technical solution, mounting frames are provided at both ends of the first tension roller and the second tension roller, and sliding grooves are provided on the mounting frames. The bearing seats at both ends of the first tension roller and the second tension roller are slidably disposed in the sliding grooves. Hydraulic cylinders are provided on the bearing seats at both ends of the first tension roller and the second tension roller, and the protruding ends of the hydraulic cylinders are connected to the bearing seats. The cylinder bodies of the hydraulic cylinders are connected to the frame.

[0010] To further optimize the technical solution, pressure sensors are respectively installed on the bearings of the second and third redirecting rollers.

[0011] To further optimize the technical solution, a cleaning roller brush is provided on the return section of the conveyor belt. The cleaning roller brush is located on the rear side of the baffle plate, and a third driving component is connected to the rotating shaft of the cleaning roller brush.

[0012] To further optimize the technical solution, a blower nozzle is provided at the rear of the cleaning roller brush.

[0013] To further optimize the technical solution, baffles are provided on both sides of the outbound and return sections of the conveyor belt.

[0014] The beneficial effects of this utility model include: reducing the drop height difference of the returned material through the feed chute and buffer chute; the transition of the buffer chute prevents calcium carbonate particles from directly impacting the conveyor belt surface and affecting the service life of the conveyor belt; the continuous inclined design of the discharge guide plate further reduces the drop height difference of the returned material and guides the returned material smoothly into the return section; the returned material is directly transported through the return section of the conveyor belt; when the returned material is transported to the unloading component position, the baffle plate blocks the returned material, and the return material is diverted to the two side collection troughs by the guide slopes on both sides of the unloading guide block, avoiding the imbalance of force on both sides of the conveyor belt caused by unloading from one side of the conveyor belt, which would cause the conveyor belt to run off-track and wear; the return surface of the traditional conveyor belt is usually unloaded, while this utility model uses the return section of the conveyor belt to transport the returned material, eliminating the need to build a new conveyor belt dedicated to transporting returned material and eliminating the need for additional space, which can effectively improve the utilization rate of the equipment and reduce the investment in additional returned material equipment. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of the calcium carbonate granule raw material conveying device in an embodiment of this utility model.

[0016] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the conveyor belt being installed around the body in an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the material guiding component in an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the installation of the unloading assembly in an embodiment of this utility model.

[0020] Reference numerals: 1. Frame; 2. Conveyor belt; 3. Material guiding assembly; 301. Feed chute; 302. Buffer trough; 303. Discharge guide plate; 304. Flow channel; 4. Discharge assembly; 401. Baffle plate; 402. Discharge guide block; 403. Collection trough; 404. Guide slope; 5. First drive roller; 6. First redirecting roller; 7. Outgoing idler roller; 8. Return idler roller; 9. Second redirecting roller; 10. Third redirecting roller; 11. First tension roller; 12. Second tension roller; 13. Second drive roller; 14. First drive component; 15. Second drive component; 16. Mounting frame; 17. Slide groove; 18. Hydraulic cylinder; 19. Pressure sensor; 20. Cleaning roller brush; 21. Third drive component; 22. Blowing nozzle; 23. Material stop bar. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of the embodiments 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Please see Figures 1 to 5In one embodiment, a calcium carbonate granule raw material conveying device includes a frame 1, a conveyor belt 2, a material guiding assembly 3, and a material unloading assembly 4. A first drive roller 5 and a first redirecting roller 6 are symmetrically arranged at both ends of the frame 1. The conveyor belt 2 is fitted onto the first drive roller 5 and the first redirecting roller 6. The material guiding assembly 3 is located at the beginning of the return section of the conveyor belt 2 and is used to guide the return material onto the upper surface of the return section. The material unloading assembly 4 is located at the end of the return section of the conveyor belt 2 and is used to scrape the return material off the inlet conveyor belt 2 for unloading. The material guiding assembly 3 includes a feed chute 301, a buffer chute 302, and a discharge guide plate 303. The feed chute 301 is located on the frame 1. On one side, the outlet of the feed chute 301 extends above the return section of the conveyor belt 2 and connects with the buffer trough 302. The outlet of the buffer trough 302 is connected with the discharge guide plate 303. The unloading assembly 4 includes a baffle plate 401, an unloading guide block 402, and a collection trough 403. The baffle plate 401 is vertically arranged between the outgoing and return sections of the conveyor belt 2 and its bottom end abuts against the belt surface of the return section. The unloading guide block 402 is arranged on the front side of the baffle plate 401, that is, the side that first contacts the baffle plate 401 when the return section of the conveyor belt 2 transports the returned material. The unloading guide block 402 is provided with a guide slope 404 on both sides. The collection trough 403 is respectively arranged on both sides of the unloading guide block 402. Specifically, both sides of the conveyor belt 2 are made of existing wear-resistant materials. The feed chute 301 slopes from one side of the frame 1 towards the middle of the conveyor belt 2, and the feed chute 301 is perpendicular to the running direction of the conveyor belt 2. The buffer trough 302 is set between the outgoing section (main conveying section) and the return section (return conveying section) of the conveyor belt 2, and is inclined downward along the conveying direction of the return section of the conveyor belt 2. The discharge guide plate 303 is connected to the low-end outlet of the buffer trough 302, and the discharge guide plate 303 is also inclined downward along the conveying direction of the return section of the conveyor belt 2; the baffle plate... Plate 401 is vertically fixed to frame 1. Unloading guide block 402 is an equilateral triangular wedge structure, and its bottom is in contact with the surface of the return section of conveyor belt 2. The top opening of the collection trough 403 is at the same level as or lower than the surface of the return section of conveyor belt 2. When the return material is transported to the position of unloading guide block 402 along with the return section of conveyor belt 2, unloading guide block 402 guides the return material into the collection trough 403 on both sides of frame 1 through the guide ramps 404 on both sides, and unloads the return material from the conveyor belt 2.In this embodiment, the inclined connection between the feed chute 301 and the buffer trough 302 reduces the drop height difference of the returned material. The transition through the buffer trough 302 prevents calcium carbonate particles from directly impacting the conveyor belt 2 surface, thus affecting its service life. The continuous inclined design of the discharge guide plate 303 further reduces the drop height difference of the returned material and guides it smoothly into the return section. The returned material is transported through the return section of the conveyor belt 2. When the returned material reaches the unloading assembly 4, the baffle plate 4... 01. The return material is blocked, and the return material is diverted to the two-sided collection troughs 403 by the guide slopes 404 on both sides of the unloading guide block 402. This avoids the unloading from one side of the conveyor belt 2, which would cause the conveyor belt 2 to run off-center due to the unbalanced force on both sides. The return section of the traditional conveyor belt is usually unloaded, but this utility model uses the return section of the conveyor belt 2 to transport the return material. There is no need to build another conveying device dedicated to transporting the return material, nor is there any need to occupy extra space. This can effectively improve the utilization rate of the equipment and reduce the investment in additional return material equipment.

[0026] In a preferred embodiment, a plurality of guide channels 304 are provided on the feed guide plate 303. The concentrated return flow is divided into several small streams by the multiple guide channels 304, and the streams fall evenly onto the return section of the conveyor belt 2. This avoids a large amount of return material from impacting a single point on the conveyor belt 2 at the same time, reduces the instantaneous impact force on the conveyor belt 2, protects the belt surface, and reduces wear.

[0027] In a specific example, the frame 1 is equipped with several outgoing idlers 7 and several returning idlers 8. The outgoing idlers 7 abut against the bottom surface of the outgoing section of the conveyor belt 2, and the returning idlers 8 abut against the bottom surface of the returning section of the conveyor belt 2. The spacing between adjacent outgoing idlers 7 and adjacent returning idlers 8 is the same. The outgoing idlers 7 and returning idlers 8 respectively support the bottom surface of the outgoing and returning sections of the conveyor belt, distributing the gravity load and preventing the conveyor belt 2 from sagging or deforming due to excessive load. Both the outgoing idlers 7 and returning idlers 8 are trough-shaped idlers to reduce the risk of spillage of calcium carbonate granular raw materials.

[0028] In a preferred embodiment, a second redirecting roller 9 and a third redirecting roller 10 are respectively provided below the first drive roller 5 and the first redirecting roller 6. A first tensioning roller 11 is provided between the second redirecting roller 9 and the return idler roller 8, and a second tensioning roller 12 is provided between the third redirecting roller 10 and the return idler roller 8. The conveyor belt 2 passes over the top surface of the second redirecting roller 9, the bottom surface of the first tensioning roller 11, the top surface of the return idler roller 8, the bottom surface of the second tensioning roller 12, and the third redirecting roller 10. The wrap angle of the conveyor belt 2 on the first drive roller 5 is increased by the second redirecting roller 9, and the wrap angle of the conveyor belt 2 on the first redirecting roller 6 is increased by the third redirecting roller 10, thereby increasing the friction and preventing the conveyor belt 2 from slipping under heavy load. The first tensioning roller 11 and the second tensioning roller 12 are respectively arranged on both sides of the return section for segmented tensioning. The first tensioning roller 11 mainly counteracts the shrinkage force of the conveyor belt 2 after unloading in the outgoing section, and the second tensioning roller 12 mainly counteracts the shrinkage force of the conveyor belt 2 after unloading in the return section, preventing the conveyor belt 2 from loosening and reducing the risk of deviation.

[0029] In a preferred embodiment, a second drive roller 13 is provided between the return idler roller 8 and the second tension roller 12. The roller surface of the second drive roller 13 is horizontal to the roller surface of the return idler roller 8. A first drive member 14 is connected to the shaft of the first drive roller 5, and a second drive member 15 is connected to the shaft of the second drive roller 13. Specifically, both the first drive member 14 and the second drive member 15 are frequency converter controlled and have the same rotation speed. The first drive member 14 drives the first drive roller 5 to rotate, thereby driving the outgoing section (main conveying section) of the conveyor belt 2, bearing the main traction force of the material and the conveyor belt 2. The second drive member 15 drives the second drive roller 13 to rotate, thereby driving the return section (return material conveying section) of the conveyor belt 2, providing power for return material transportation and avoiding tension attenuation caused by the return section relying on a single drive point.

[0030] In a preferred embodiment, mounting frames 16 are provided at both ends of the first tension roller 11 and the second tension roller 12, and grooves 17 are provided on the mounting frames 16. The bearing seats at both ends of the first tension roller 11 and the second tension roller 12 are slidably disposed in the grooves 17. Hydraulic cylinders 18 are provided on the bearing seats at both ends of the first tension roller 11 and the second tension roller 12, respectively. The protruding end of the hydraulic cylinder 18 is connected to the bearing seat, and the cylinder body of the hydraulic cylinder 18 is connected to the frame 1. The first tension roller 11 and the second tension roller 12 can slide up and down in the grooves 17 to adjust the tension of the conveyor belt 2. By providing hydraulic cylinders 18 at both ends of the same tension roller, and connecting the hydraulic oil port of the hydraulic cylinder 18 to an external hydraulic station, the hydraulic cylinder 18 can drive the corresponding tension roller to slide up and down along the grooves 17 to adjust the position of the tension roller and realize automatic tension adjustment.

[0031] In a preferred embodiment, pressure sensors 19 are respectively provided on the bearings of the second redirecting roller 9 and the third redirecting roller 10. The pressure sensors 19 detect the tension at both ends of the conveyor belt 2 in real time and feed the data back to the controller to calculate the tension deviation. The controller sends a control signal to control the stroke of the corresponding hydraulic cylinder 18, driving the corresponding tension roller to perform movement compensation, thereby realizing closed-loop automatic control of tension adjustment and maintaining the tension balance of the conveyor belt 2.

[0032] In a preferred embodiment, a cleaning roller brush 20 is provided on the return section of the conveyor belt 2. The cleaning roller brush 20 is located behind the baffle plate 401, and a third drive component 21 is connected to the rotating shaft of the cleaning roller brush 20. Specifically, the cleaning roller brush 20 uses high-elasticity nylon bristles, and the brush surface contacts the surface of the conveyor belt 2. The third drive component 21 drives the cleaning roller brush 20 to rotate in the opposite direction (opposite to the running direction of the return section of the conveyor belt 2) to peel off the calcium carbonate powder adhering to the belt surface, clean the residual material that the baffle plate 401 could not completely block, and prevent the residual material from being rolled into the subsequent roller surfaces such as the second tension roller 12, causing abnormal wear.

[0033] In a preferred embodiment, a purge nozzle 22 is provided behind the cleaning roller brush 20. The purge nozzle 22 faces the surface of the conveyor belt 2, which will prevent residual material from being blown off the conveyor belt 2 and further increase the cleanliness of the conveyor belt 2 surface.

[0034] In a specific example, baffles 23 are provided on both sides of the outbound and return sections of the conveyor belt 2. The baffles 23 are fixed to both sides of the frame 1, and the height of the baffles 23 is higher than the material layer height when the conveyor belt 2 is conveying material, so as to prevent material from spilling out from both sides of the conveyor belt 2.

[0035] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the 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 described specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. A calcium carbonate granule raw material conveying device, characterized in that: The system includes a frame, a conveyor belt, a material guiding assembly, and a material unloading assembly. The frame has a first drive roller and a first redirecting roller at each end. The conveyor belt is fitted onto the first drive roller and the first redirecting roller. The material guiding assembly is located at the beginning of the return section of the conveyor belt, and the material unloading assembly is located at the end of the return section. The material guiding assembly includes a feed chute, a buffer trough, and a discharge guide plate. The feed chute is located on one side of the frame, and its outlet extends above the return section of the conveyor belt and connects to the buffer trough. The outlet of the buffer trough is connected to the discharge guide plate. The material unloading assembly includes a baffle plate, a discharge guide block, and a collection trough. The baffle plate is vertically positioned between the outgoing and return sections of the conveyor belt, with its bottom end abutting against the belt surface of the return section. The discharge guide block is located in front of the baffle plate, and its two sides have guiding ramps. The collection troughs are located on both sides of the discharge guide block.

2. The calcium carbonate granule raw material conveying device as described in claim 1, characterized in that: The feeding guide plate is divided into several flow channels.

3. The calcium carbonate granule raw material conveying device as described in claim 2, characterized in that: The frame is provided with a plurality of outgoing idlers and a plurality of return idlers. The plurality of outgoing idlers abut against the bottom surface of the outgoing section of the conveyor belt, and the plurality of return idlers abut against the bottom surface of the return section of the conveyor belt.

4. The calcium carbonate granule raw material conveying device as described in claim 3, characterized in that: Below the first drive roller and the first redirecting roller, a second redirecting roller and a third redirecting roller are respectively provided. A first tensioning roller is provided between the second redirecting roller and the return idler, and a second tensioning roller is provided between the third redirecting roller and the return idler. The conveyor belt passes over the top surface of the second redirecting roller, the bottom surface of the first tensioning roller, the top surface of the return idler, the bottom surface of the second tensioning roller, and the third redirecting roller.

5. The calcium carbonate granule raw material conveying device as described in claim 4, characterized in that: A second drive roller is provided between the return idler roller and the second tension roller. The roller surface of the second drive roller is horizontal to the roller surface of the return idler roller. A first drive component is connected to the shaft of the first drive roller, and a second drive component is connected to the shaft of the second drive roller.

6. The calcium carbonate granule raw material conveying device as described in claim 5, characterized in that: The first tension roller and the second tension roller are respectively provided with mounting frames at both ends. The mounting frames are provided with sliding grooves. The bearing seats at both ends of the first tension roller and the second tension roller are respectively slidably disposed in the sliding grooves. The bearing seats at both ends of the first tension roller and the second tension roller are respectively provided with hydraulic cylinders. The protruding end of the hydraulic cylinder is connected to the bearing seat, and the cylinder body of the hydraulic cylinder is connected to the frame.

7. The calcium carbonate granule raw material conveying device as described in claim 6, characterized in that: Pressure sensors are respectively provided on the bearings of the second and third redirecting rollers.

8. The calcium carbonate granule raw material conveying device as described in claim 7, characterized in that: The return section of the conveyor belt is equipped with a cleaning roller brush, which is located on the rear side of the baffle plate. A third drive component is connected to the rotating shaft of the cleaning roller brush.

9. The calcium carbonate granule raw material conveying device as described in claim 8, characterized in that: A blower nozzle is located at the rear of the cleaning roller brush.

10. The calcium carbonate granule raw material conveying device as described in claim 1, characterized in that: Both sides of the conveyor belt's outgoing and return sections are equipped with baffles.

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