Automatic calcium carbonate powder feeding device

Abstract

The invention is suitable for the technical field of feeding devices, and provides an automatic calcium carbonate powder feeding device which comprises a fixing frame, a storage hopper, a servo motor, a first transmission rod, a driving gear, a quantitative discharging mechanism, a directional conveying mechanism and a dredging mechanism. One end of the first transmission rod is rotationally connected to the fixing frame, the other end of the first transmission rod is coaxially fixed to an output shaft of the servo motor, and the driving gear is coaxially fixed to the first transmission rod. The quantitative discharging mechanism is arranged on the fixing frame. According to the scheme, the quantitative discharging mechanism, the directional conveying mechanism and the dredging mechanism are arranged, quantitative discharging of calcium carbonate powder is achieved through the quantitative discharging mechanism, the calcium carbonate powder conveying device is simple, efficient, economical and practical, and directional conveying operation of the calcium carbonate powder is achieved through the directional conveying mechanism; and stirring of the calcium carbonate powder in the storage hopper is achieved through the arrangement of the dredging mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of feeding devices, and in particular relates to an automatic feeding device for calcium carbonate powder. Background Art

[0002] Calcium carbonate is an inorganic compound and the main component of limestone, marble, etc. Calcium carbonate is usually white crystals, odorless, basically insoluble in water, and easily reacts with acid to release carbon dioxide. It is one of the common substances on Earth and exists in rocks such as aragonite, calcite, chalk, limestone, marble, travertine, etc. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry.

[0003] At present, in processing operations that require the use of calcium carbonate powder, a feeding device is generally required to transport the calcium carbonate powder to a designated location and then further process it. At present, there are many types of feeding devices for calcium carbonate powder, and different types of feeding devices are also used in different processing scenarios.

[0004] In the related art, although there are various feeding devices at present, there are still some problems. For example, in the device coordinated by the hopper and the conveyor belt, although the calcium carbonate powder leaking out of the hopper can be conveyed in a direction through the conveyor belt, the amount of material discharged from the hopper cannot be accurately controlled, resulting in uneven conveying of the calcium carbonate powder during transportation. In addition, a baffle is generally provided at the leakage end of the hopper. Both the baffle and the conveyor belt need to be driven by a driving device, and the two sets of driving devices need to be centrally controlled by a controller, resulting in a high overall cost of the device. At the same time, when leaking, the calcium carbonate powder in the device is easily squeezed and accumulated, resulting in the inability to leak. At this time, it is necessary to manually clear the calcium carbonate powder in the hopper, which is cumbersome and time-consuming. Summary of the invention

[0005] The invention provides an automatic feeding device for calcium carbonate powder, aiming to solve the problem that the current calcium carbonate powder feeding device needs to use multiple sets of driving devices when feeding, which can not accurately control the feeding amount, has a high cost, and the calcium carbonate powder is easily squeezed and accumulated and blocked in the hopper, requiring manual unblocking.

[0006] The present invention is implemented as follows: an automatic feeding device for calcium carbonate powder comprises: a fixed frame, a storage hopper, a servo motor, a first transmission rod, a driving gear, a quantitative feeding mechanism, a directional conveying mechanism and a dredging mechanism, wherein the storage hopper is arranged on the top of the fixed frame, the servo motor is fixed inside the fixed frame, one end of the first transmission rod is rotatably connected to the fixed frame, and the other end is coaxially fixed to the output shaft of the servo motor, and the driving gear is coaxially fixed to the first transmission rod;

[0007] The quantitative feeding mechanism is used for quantitatively discharging the calcium carbonate powder in the storage hopper, and the quantitative feeding mechanism is arranged on the fixed frame. The quantitative feeding mechanism includes a storage tray and a supporting plate. The storage tray is slidably arranged above the fixed frame. The supporting plate is horizontally fixed on the top of the fixed frame. The storage tray is located between the storage hopper and the supporting plate, and a rectangular through hole is provided through the storage tray. The size of the rectangular through hole is the same as the discharging end of the storage hopper;

[0008] The directional conveying mechanism for directionally conveying the calcium carbonate powder is arranged on the fixed frame. The directional conveying mechanism includes a linkage gear disk, a driven gear disk, a first transmission roller and a first conveyor belt. The linkage gear disk is coaxially fixed on the first transmission rod. The first transmission roller is rotatably connected in the fixed frame and there are two symmetrically arranged. The driven gear disk is coaxially fixed at one end of one of the first transmission rollers and meshes with the linkage gear disk. The first conveyor belt is arranged between two adjacent first transmission rollers, and the first conveyor belt is located at the bottom of the supporting plate;

[0009] The dredging mechanism is used for stirring the calcium carbonate powder in the storage hopper, and the dredging mechanism is arranged between the fixed frame and the storage hopper.

[0010] Preferably, the quantitative feeding mechanism further includes a second transmission rod, a driven gear, a cam and an abutting rod. The second transmission rod is rotatably connected in the fixed frame. The driven gear is coaxially fixed on the second transmission rod and meshes with the driving gear. The cam is fixed at the end point of the second transmission rod. The abutting rod is slidably arranged on one side of the fixed frame, and one end of the abutting rod is fixed to the storage tray. The cam is in sliding abutment with the abutting rod. Card slots are arranged at both the upper and lower ends on one side of the fixed frame. The card slot at the upper part is provided through, and the card slot at the lower part is concave. One end of the abutting rod is slidably clamped in the card slot at the lower part, and the other end passes through the card slot at the upper part and is fixed to the storage tray.

[0011] Preferably, the directional conveying mechanism further includes a second transmission roller, a second conveyor belt and a support seat. There are two second transmission rollers. One of the second transmission rollers is rotatably connected in the fixed frame, and the other second transmission roller is rotatably connected in the support seat. The support seat is arranged on one side of the fixed frame. The second conveyor belt is arranged between two adjacent second transmission rollers.

[0012] Preferably, a belt is sleeved between the first transmission roller and the second transmission roller located on the fixed frame.

[0013] Preferably, the second conveyor belt is located at the bottom of the first conveyor belt and partially overlaps with the first conveyor belt.

[0014] Preferably, the dredging mechanism includes a lifting rod, an adjusting plate, a cross bar, a docking rod and a stirring rod. The lifting rods are slidably arranged on one side of the fixed frame and are symmetrically arranged in two. The cross bar is horizontally fixed between two adjacent lifting rods and is located above the storage hopper. The adjusting plate is fixed on one side of the abutting rod, and an inclined surface structure is arranged on the top of the adjusting plate. The bottom of the lifting rod slidably abuts against the inclined surface of the adjusting plate. The docking rod is vertically fixed at the bottom of the cross bar. The docking rod is located in the storage hopper and is symmetrically arranged in two. The stirring rod is rotatably connected between two adjacent docking rods.

[0015] Preferably, the dredging mechanism further includes a docking gear, a rack and a shifting rod. The docking gear is coaxially fixed on the stirring rod. The rack is vertically fixed on the inner wall of the storage hopper. The docking gear meshes with the rack. The shifting rod is fixed on the outer wall of the stirring rod and is arranged in multiple numbers at equal intervals.

[0016] Preferably, a second resetting member is sleeved outside the lifting rod, and a rectangular plate is arranged on the lifting rod. One end of the second resetting member abuts against the rectangular plate, and the other end abuts against the top of the fixed frame.

[0017] Preferably, a roller is rotatably connected to one end of the lifting rod close to the adjusting plate, and the roller rolls and abuts against the inclined surface of the adjusting plate.

[0018] Preferably, a first resetting member is horizontally arranged at the bottom of the fixed frame, and one end of the first resetting member abuts against the abutting rod.

[0019] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0020] 1. By using the meshing and linkage of the driven gear and the driving gear in the quantitative feeding mechanism, the cam is driven to rotate through the second transmission rod, and the storage tray is pushed to slide by the cam, so that the rectangular through hole of the storage tray moves to the bottom of the storage hopper, and then the calcium carbonate powder in the storage hopper leaks into the rectangular through hole and is limited by the supporting plate, thereby realizing the quantitative feeding of the calcium carbonate powder, which is simple, efficient, economical and practical.

[0021] 2. By setting up the directional conveying mechanism, when the storage tray slides in the reverse direction, the calcium carbonate powder inside the storage tray can be separated from the supporting plate and fall onto the first conveyor belt, thereby realizing the directional conveying operation of the calcium carbonate powder. At the same time, through the meshing and linkage of the linkage gear disk and the passive gear disk, the entire directional conveying mechanism can be synchronously linked with the quantitative feeding mechanism, avoiding the need for multiple sets of driving devices to control it, and greatly reducing the manufacturing cost of the equipment.

[0022] 3. By setting up the dredging mechanism, when the abutting rod slides, it drives the adjusting plate to slide, and through the adjusting plate, the lifting rod is pushed to move, thereby driving the stirring rod to move up and down in the storage hopper, realizing the agitation of the calcium carbonate powder inside the storage hopper, and effectively avoiding the situation where the calcium carbonate powder in the storage hopper cannot leak due to accumulation and extrusion inside the storage hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0024] Figure 2 is a schematic diagram of the fixing frame and its connection structure of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the directional conveying mechanism of the present invention;

[0026] Figure 4 is a schematic diagram of the structure of the quantitative feeding mechanism of the present invention;

[0027] Figure 5 is a schematic diagram of the connection structure of the storage tray of the present invention;

[0028] Figure 6 is a schematic diagram of the structure of the dredging mechanism of the present invention;

[0029] Figure 7 is a schematic diagram of the connection structure of the docking gear and the rack of the present invention;

[0030] In the figure: 1. Fixing frame; 2. Storage hopper; 3. Servo motor; 4. First transmission rod; 5. Driving gear; 6. Quantitative feeding mechanism; 61. Storage tray; 62. Supporting plate; 63. Second transmission rod; 64. Driven gear; 65. Cam; 66. Abutting rod; 67. Card slot; 68. First reset member; 7. Directional conveying mechanism; 71. Linkage gear disk; 72. Passive gear disk; 73. First transmission roller; 74. First conveyor belt; 75. Second transmission roller; 76. Second conveyor belt; 77. Belt; 78. Support seat; 8. Dredging mechanism; 81. Lifting rod; 82. Adjusting plate; 83. Cross bar; 84. Docking rod; 85. Stirring rod; 86. Docking gear; 87. Rack; 88. Poking rod; 89. Second reset member; 810. Roller. Detailed implementation manners

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0032] Referring to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] An embodiment of the present invention provides an automatic feeding device for calcium carbonate powder, as Figure 1-7 shown, including: a fixing frame 1, a storage hopper 2, a servo motor 3, a first transmission rod 4, a driving gear 5, a quantitative feeding mechanism 6, a directional conveying mechanism 7, and a dredging mechanism 8. The storage hopper 2 is arranged on the top of the fixing frame 1, the servo motor 3 is fixed inside the fixing frame 1, one end of the first transmission rod 4 is rotatably connected to the fixing frame 1, and the other end is coaxially fixed to the output shaft of the servo motor 3. The driving gear 5 is coaxially fixed on the first transmission rod 4;

[0034] The quantitative feeding mechanism 6 is used for quantitatively discharging the calcium carbonate powder in the storage hopper 2, and the quantitative feeding mechanism 6 is arranged on the fixing frame 1. The quantitative feeding mechanism 6 includes a storage tray 61 and a supporting plate 62. The storage tray 61 is slidably arranged above the fixing frame 1, the supporting plate 62 is horizontally fixed on the top of the fixing frame 1, and the storage tray 61 is located between the storage hopper 2 and the supporting plate 62. A rectangular through hole is provided through the storage tray 61, and the size of the rectangular through hole is the same as the discharging end of the storage hopper 2;

[0035] The quantitative feeding mechanism 6 further includes a second transmission rod 63, a driven gear 64, a cam 65 and an abutting rod 66. The second transmission rod 63 is rotatably connected within the fixed frame 1. The driven gear 64 is coaxially fixed on the second transmission rod 63 and meshes with the driving gear 5. The cam 65 is fixed at the end of the second transmission rod 63. The abutting rod 66 is slidably arranged on one side of the fixed frame 1, and one end of the abutting rod 66 is fixed to the storage tray 61. The cam 65 is in sliding abutment with the abutting rod 66. Card slots 67 are provided at both the upper and lower ends on one side of the fixed frame 1. The upper card slot 67 is provided in a penetrating manner, and the lower card slot 67 is concavely provided. One end of the abutting rod 66 is slidably clamped in the lower card slot 67, and the other end passes through the upper card slot 67 and is fixed to the storage tray 61.

[0036] The directional conveying mechanism 7 for directionally conveying calcium carbonate powder is arranged on the fixed frame 1. The directional conveying mechanism 7 includes a linkage gear disk 71, a driven gear disk 72, a first transmission roller 73 and a first conveyor belt 74. The linkage gear disk 71 is coaxially fixed on the first transmission rod 4. The first transmission roller 73 is rotatably connected within the fixed frame 1 and two are symmetrically arranged. The driven gear disk 72 is coaxially fixed at one end of one of the first transmission rollers 73 and meshes with the linkage gear disk 71. The first conveyor belt 74 is arranged between two adjacent first transmission rollers 73, and the first conveyor belt 74 is located at the bottom of the supporting plate 62.

[0037] The dredging mechanism 8 is used for stirring the calcium carbonate powder in the storage hopper 2, and the dredging mechanism 8 is arranged between the fixed frame 1 and the storage hopper 2. The dredging mechanism 8 includes a lifting rod 81, an adjusting plate 82, a cross bar 83, a docking rod 84 and a stirring rod 85. The lifting rod 81 is slidably arranged on one side of the fixed frame 1 and two are symmetrically arranged. The cross bar 83 is horizontally fixed between two adjacent lifting rods 81 and is located above the storage hopper 2. The adjusting plate 82 is fixed on one side of the abutting rod 66, and an inclined surface structure is provided at the top of the adjusting plate 82. The bottom of the lifting rod 81 is slidably abutted against the inclined surface of the adjusting plate 82. The docking rod 84 is vertically fixed at the bottom of the cross bar 83. The docking rod 84 is located within the storage hopper 2 and two are symmetrically arranged. The stirring rod 85 is rotatably connected between two adjacent docking rods 84.

[0038] It should be noted that since multiple sets of driving devices are required for the current calcium carbonate powder feeding device during feeding, it is neither possible to accurately control the feeding amount, nor is the manufacturing cost low. Moreover, the calcium carbonate powder is prone to being extruded and accumulated and blocked in the hopper, and manual dredging is required. To solve this problem, a quantitative feeding mechanism 6, a directional conveying mechanism 7, and a dredging mechanism 8 are provided in this solution. The driven gear 64 in the quantitative feeding mechanism 6 is meshed and linked with the driving gear 5, and then the cam 65 is driven to rotate through the second transmission rod 63. The cam 65 pushes the storage tray 61 to slide, so that the rectangular through hole of the storage tray 61 moves to the bottom of the storage hopper 2, and then the calcium carbonate powder inside the storage hopper 2 leaks into the rectangular through hole and is limited by the supporting plate 62, thereby realizing the quantitative feeding of the calcium carbonate powder. It is simple, efficient, economical and practical at the same time;

[0039] With the setting of the directional conveying mechanism 7, when the storage tray 61 slides in the reverse direction, the calcium carbonate powder inside the storage tray 61 can be separated from the supporting plate 62 and fall onto the first conveyor belt 74, thereby realizing the directional conveying operation of the calcium carbonate powder. At the same time, through the meshing and linkage of the linkage gear disk 71 and the passive gear disk 72, the whole directional conveying mechanism 7 can be synchronously linked with the quantitative feeding mechanism 6, avoiding the need for multiple sets of driving devices to control it, and greatly reducing the manufacturing cost of the equipment;

[0040] With the setting of the dredging mechanism 8, the abutting rod 66 drives the adjusting plate 82 to slide while sliding, and the adjusting plate 82 pushes the lifting rod 81 to move, thereby driving the stirring rod 85 to move up and down in the storage hopper 2, thereby realizing the agitation of the calcium carbonate powder inside the storage hopper 2, effectively avoiding the situation that the calcium carbonate powder cannot leak due to being accumulated and extruded inside the storage hopper 2.

[0041] Specifically, in this embodiment, the solution mainly includes a fixing frame 1, a storage hopper 2, a servo motor 3, a first transmission rod 4, a driving gear 5, a quantitative feeding mechanism 6, a directional conveying mechanism 7, and a dredging mechanism 8. When in use, first add calcium carbonate powder into the storage hopper 2, then start the servo motor 3 to drive the first transmission rod 4 and the driving gear 5 to rotate. The driven gear 64 is driven by the driving gear 5 to engage and link, and then the cam 65 is driven to rotate by the second transmission rod 63. The cam 65 pushes the storage tray 61 to slide, so that the rectangular through hole of the storage tray 61 moves to the bottom of the storage hopper 2, and then the calcium carbonate powder inside the storage hopper 2 leaks into the rectangular through hole. When the abutting rod 66 drives the storage tray 61 to slide in the reverse direction, the calcium carbonate powder inside the storage tray 61 is separated from the supporting plate 62 and falls onto the first conveyor belt 74. At this time, the linkage gear disk 71 rotates synchronously with the first transmission rod 4. The linkage gear disk 71 and the passive gear disk 72 engage and link, and then the first transmission roller 73 rotates, and drives the first conveyor belt 74 to link and convey the calcium carbonate powder directionally. At the same time, the second transmission roller 75 rotates synchronously with the first transmission roller 73 through the belt 77, and drives the second conveyor belt 76 to link; while the abutting rod 66 slides, the adjusting plate 82 slides synchronously, and the lifting rod 81 is pushed to move by the adjusting plate 82, and then the stirring rod 85 is driven to move up and down inside the storage hopper 2.

[0042] In a further preferred embodiment of the present invention, as Figure 1 and Figure 3 shown, the directional conveying mechanism 7 further includes a second transmission roller 75, a second conveyor belt 76, and a support seat 78. There are two second transmission rollers 75. One of the second transmission rollers 75 is rotatably connected inside the fixing frame 1, and the other second transmission roller 75 is rotatably connected inside the support seat 78. The support seat 78 is arranged on one side of the fixing frame 1, and the second conveyor belt 76 is arranged between two adjacent second transmission rollers 75.

[0043] In this embodiment, the second conveyor belt 76 is driven to link by the second transmission roller 75, and further convey the calcium carbonate powder through the second conveyor belt 76.

[0044] In a further preferred embodiment of the present invention, as Figure 3 shown, a belt 77 is sleeved between the first transmission roller 73 and the second transmission roller 75 located on the fixing frame 1.

[0045] In this embodiment, the second transmission roller 75 can rotate synchronously with the first transmission roller 73 through the belt 77.

[0046] In a further preferred embodiment of the present invention, as Figure 1-3 shown, the second conveyor belt 76 is located at the bottom of the first conveyor belt 74 and partially overlaps with the first conveyor belt 74.

[0047] In this embodiment, through the overlapping arrangement, when the calcium carbonate powder material falls from the first conveyor belt 74 into the second conveyor belt 76, it is prevented from falling through the gap between the first conveyor belt 74 and the second conveyor belt 76.

[0048] In a further preferred embodiment of the present invention, as Figure 7 shown, the dredging mechanism 8 further includes a docking gear 86, a rack 87 and a lever 88. The docking gear 86 is coaxially fixed on the stirring rod 85, the rack 87 is vertically fixed on the inner wall of the storage hopper 2, the docking gear 86 meshes with the rack 87, and the lever 88 is fixed on the outer wall of the stirring rod 85 and is provided with a plurality of them at equal intervals.

[0049] In this embodiment, through the arrangement of the rack 87, when the docking gear 86 moves up and down following the docking rod 84, it can be meshed and linked with the rack 87, thereby driving the stirring rod 85 to rotate, and further stirring the calcium carbonate powder material in the storage hopper 2 through the lever 88.

[0050] In a further preferred embodiment of the present invention, as Figure 1-6 shown, a second reset member 89 is sleeved outside the lifting rod 81, and a rectangular plate is arranged on the lifting rod 81. One end of the second reset member 89 abuts against the rectangular plate, and the other end abuts against the top of the fixed frame 1.

[0051] In this embodiment, the elastic force of the second reset member 89 enables the lifting rod 81 to quickly reset.

[0052] In a further preferred embodiment of the present invention, as Figure 1-6 shown, a roller 810 is rotatably connected to one end of the lifting rod 81 close to the adjusting plate 82, and the roller 810 rolls and abuts against the inclined surface of the adjusting plate 82.

[0053] In this embodiment, the rolling of the roller 810 reduces the frictional resistance between the lifting rod 81 and the adjusting plate 82.

[0054] In a further preferred embodiment of the present invention, as Figure 1-6 shown, a first reset member 68 is horizontally arranged at the bottom of the fixed frame 1, and one end of the first reset member 68 abuts against the abutting rod 66.

[0055] In this embodiment, the elastic force of the first reset member 68 enables the abutting rod 66 to drive the storage tray 61 to quickly reset.

[0056] It should be noted that, for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0057] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units can have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0058] The units described as separate components above may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present invention according to the situation without creative work, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An automatic feeding device for calcium carbonate powder, characterized in that: include: A fixed frame (1), a storage hopper (2), a servo motor (3), a first transmission rod (4), a driving gear (5), a quantitative unloading mechanism (6), a directional conveying mechanism (7) and a dredging mechanism (8), wherein the storage hopper (2) is arranged on the top of the fixed frame (1), the servo motor (3) is fixed inside the fixed frame (1), one end of the first transmission rod (4) is rotatably connected to the fixed frame (1), and the other end is coaxially fixed to the output shaft of the servo motor (3), and the driving gear (5) is coaxially fixed to the first transmission rod (4); The quantitative unloading mechanism (6) is used for quantitatively discharging the calcium carbonate powder in the storage hopper (2), and the quantitative unloading mechanism (6) is arranged on the fixed frame (1), and the quantitative unloading mechanism (6) comprises a material storage tray (61) and a supporting plate (62), the material storage tray (61) is slidably arranged above the fixed frame (1), the supporting plate (62) is horizontally fixed on the top of the fixed frame (1), and the material storage tray (61) is located between the storage hopper (2) and the supporting plate (62), and a rectangular through hole is penetrated on the material storage tray (61), and the size of the rectangular through hole is the same as that of the material discharge end of the storage hopper (2); The directional conveying mechanism (7) for directional conveying of calcium carbonate powder is arranged on a fixed frame (1), and the directional conveying mechanism (7) comprises a linked toothed disc (71), a passive toothed disc (72), a first transmission roller (73) and a first conveying belt (74), wherein the linked toothed disc (71) is coaxially fixed on the first transmission rod (4), the first transmission roller (73) is rotatably connected in the fixed frame (1), and two of them are symmetrically arranged, the passive toothed disc (72) is coaxially fixed on one end of one of the first transmission rollers (73) and meshes with the linked toothed disc (71), the first conveying belt (74) is arranged between two adjacent first transmission rollers (73), and the first conveying belt (74) is located at the bottom of the supporting plate (62); The dredging mechanism (8) is used to stir the calcium carbonate powder in the storage hopper (2), and the dredging mechanism (8) is arranged between the fixing frame (1) and the storage hopper (2).

2. The automatic calcium carbonate powder feeding device according to claim 1, characterized in that: The quantitative unloading mechanism (6) further comprises a second transmission rod (63), a driven gear (64), a cam (65) and an abutment rod (66); the second transmission rod (63) is rotatably connected in the fixed frame (1); the driven gear (64) is coaxially fixed on the second transmission rod (63) and meshes with the driving gear (5); the cam (65) is fixed at the end point of the second transmission rod (63); the abutment rod (66) is slidably arranged on one side of the fixed frame (1); and the One end of the abutment rod (66) is fixed to the material storage tray (61), and the cam (65) is slidably abutted against the abutment rod (66). The upper and lower ends of one side of the fixed frame (1) are both provided with card slots (67), the card slot (67) located at the top is through-set, and the card slot (67) located at the bottom is concavely set. One end of the abutment rod (66) is slidably engaged in the card slot (67) located at the bottom, and the other end passes through the card slot (67) located at the top and is fixed to the material storage tray (61).

3. The automatic calcium carbonate powder feeding device according to claim 1, characterized in that: The directional conveying mechanism (7) further comprises a second transmission roller (75), a second conveyor belt (76) and a support seat (78); two second transmission rollers (75) are provided, one of which is rotatably connected in the fixed frame (1), and the other of which is rotatably connected in the support seat (78); the support seat (78) is provided on one side of the fixed frame (1); and the second conveyor belt (76) is provided between two adjacent second transmission rollers (75).

4. The automatic calcium carbonate powder feeding device according to claim 3, characterized in that: A belt (77) is sleeved between the first transmission roller (73) and the second transmission roller (75) located on the fixed frame (1).

5. The automatic calcium carbonate powder feeding device according to claim 3, characterized in that: The second conveyor belt (76) is located at the bottom of the first conveyor belt (74) and partially overlaps with the first conveyor belt (74).

6. The automatic calcium carbonate powder feeding device according to claim 1, characterized in that: The dredging mechanism (8) comprises a lifting rod (81), an adjusting plate (82), a cross bar (83), a docking rod (84) and a stirring rod (85); the lifting rod (81) is slidably arranged on one side of the fixing frame (1) and two of them are symmetrically arranged; the cross bar (83) is horizontally fixed between two adjacent lifting rods (81) and is located above the storage hopper (2); the adjusting plate (82) is fixed on one side of the abutting rod (66) and an inclined surface structure is arranged on the top of the adjusting plate (82); the bottom of the lifting rod (81) is slidably abutted on the inclined surface of the adjusting plate (82); the docking rod (84) is vertically fixed on the bottom of the cross bar (83); the docking rod (84) is located in the storage hopper (2) and two of them are symmetrically arranged; the stirring rod (85) is rotatably connected between two adjacent docking rods (84).

7. An automatic calcium carbonate powder feeding device as claimed in claim 6, characterized in that: The dredging mechanism (8) further comprises a docking gear (86), a rack (87) and a lever (88); the docking gear (86) is coaxially fixed on the stirring rod (85); the rack (87) is vertically fixed on the inner wall of the storage hopper (2); the docking gear (86) is meshed with the rack (87); the lever (88) is fixed on the outer wall of the stirring rod (85), and a plurality of levers (88) are equidistantly arranged.

8. The automatic calcium carbonate powder feeding device according to claim 6, characterized in that: The lifting rod (81) is sleeved with a second reset member (89) on its exterior, and a rectangular plate is provided on the lifting rod (81); one end of the second reset member (89) abuts against the rectangular plate, and the other end abuts against the top of the fixing frame (1).

9. The automatic calcium carbonate powder feeding device according to claim 6, characterized in that: One end of the lifting rod (81) close to the adjustment plate (82) is rotatably connected to a roller (810), and the roller (810) rolls against the inclined surface of the adjustment plate (82).

10. The automatic calcium carbonate powder feeding device according to claim 1, characterized in that: A first restoring member (68) is horizontally arranged at the bottom of the fixing frame (1), and one end of the first restoring member (68) abuts against the abutting rod (66).

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