A lime metering device

Abstract

This utility model discloses a lime material quantitative dosing device, including a hopper. A discharge pipe is fixedly installed at the outlet of the hopper, and an auger discharge assembly is installed between the discharge pipe and the hopper. A fixing frame is fixedly connected to the outer surface of the discharge pipe and the bottom of the hopper. A first motor is fixedly connected to one side of the top of the fixing frame. The drive shaft of the first motor passes through the fixing frame and is fixedly connected to a closing seat, which is sealed and fitted to the bottom of the discharge pipe. Weighing rotating components are fixedly installed at both ends of the closing seat. In this utility model, by setting the weighing rotating component and the auger discharge assembly in cooperation, the weight of the lime material in the dosing bucket is monitored in real time by a weighing sensor. When the preset value is reached, the feeding stops, effectively solving the problem of the dosing accuracy affected by the density change of lime material in the prior art, and greatly improving the accuracy and stability of quantitative dosing.

Description

Technical Field

[0001] This utility model relates to the field of material feeding technology, and in particular to a lime material quantitative feeding device. Background Technology

[0002] A lime silo is a specialized industrial device used to store quicklime (calcium oxide) or hydrated lime (calcium hydroxide). It is typically made of steel plates, concrete, or corrosion-resistant materials and features sealing, moisture-proofing, and dust-proofing capabilities. Its design must consider the hygroscopicity, expansion, and corrosiveness of lime, and it is often equipped with systems for vibration arch breaking, dust removal, and temperature and humidity monitoring to ensure material flowability and stability. Widely used in building materials (such as cement and mortar production), environmental protection (flue gas desulfurization), metallurgy, and chemical industries, it is a key facility for the temporary storage and precise dosing of raw materials in industrial production.

[0003] In existing technologies, lime silos typically use screw conveyors for auxiliary feeding. The core of this technology lies in achieving quantitative control by adjusting the rotation speed, pitch, and discharge port design of the screw blades. However, the density of the lime material in the lime silo changes during the conveying process, which affects the accuracy of material feeding.

[0004] Therefore, we propose a lime quantitative addition device. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a lime quantitative addition device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lime material quantitative feeding device, including a silo, wherein a discharge pipe is fixedly installed at the discharge port of the silo, and an auger discharge assembly is installed between the discharge pipe and the silo.

[0007] The outer surface of the discharge pipe and the bottom of the hopper are fixedly connected to a fixing frame. A first motor is fixedly connected to one side of the top of the fixing frame. The drive shaft of the first motor passes through the fixing frame and is fixedly connected to a closing seat. The closing seat is sealed and fitted to the bottom of the discharge pipe.

[0008] Weighing rotating components are fixedly installed at both ends of the closed seat, and the movable ends of the two weighing rotating components are fixedly connected to the dosing buckets.

[0009] Furthermore, the auger discharge assembly includes a second motor, which is fixedly connected to the hopper. The drive end of the second motor is fixedly connected to a long shaft, which extends through the outer wall of the hopper and into the hopper, and is rotatably and sealed to the hopper. One end of the long shaft is fixedly connected to a first bevel gear, and the outer surface of the first bevel gear is meshed with a second bevel gear. The bottom of the second bevel gear is fixedly connected to an auger, and the outer wall of the auger is in contact with the inner wall of the discharge pipe. This structure changes the direction of power through bevel gear transmission, enabling the auger to accurately transport lime material.

[0010] Furthermore, the long shaft and the mounting shaft of the auger are jointly sealed and rotatably connected with a protective shell, and the protective shell is fixedly connected to the hopper. The protective shell can effectively isolate the lime material from contact with the transmission components and avoid transmission failure caused by dust erosion.

[0011] Furthermore, the closing seat is rotatably connected to the fixed frame, and the fixed frame provides support for the closing seat, which facilitates the installation of the closing seat.

[0012] Furthermore, both of the aforementioned weighing rotating components include a third motor, which is fixedly installed at the bottom of the closed seat. The drive end of the closed seat passes through the closed seat and is fixedly connected to a worm gear. A worm wheel is meshed with the outer surface of the worm gear. One end of the worm wheel is fixedly connected to an assembly shaft, which passes through the closed seat and is rotatably connected to the closed seat. The worm wheel and worm gear have a self-locking property, so when the worm gear does not rotate, the worm wheel cannot rotate under the action of external force.

[0013] Furthermore, a weighing sensor is fixedly embedded in the inner bottom of the assembly shaft. The detection end of the weighing sensor is fixedly connected to a mounting base, and the mounting base is fixedly connected to the feeding bucket. The weighing sensor directly senses the weight change of the feeding bucket through the mounting base and provides real-time feedback on the material quantity.

[0014] The beneficial effects of this utility model are:

[0015] 1. In use, this utility model uses a weighing rotating component in conjunction with an auger discharge component to monitor the weight of lime material in the dosing bucket in real time using a weighing sensor. When the preset value is reached, the feeding stops, which effectively solves the problem of the dosing accuracy being affected by the density change of lime material in the prior art, and greatly improves the accuracy and stability of quantitative dosing.

[0016] 2. When in use, this utility model adopts a dual-addition bucket alternating working mode. The first motor drives the closed seat to rotate and switch the work position, so that when one addition bucket receives material, the other can complete addition simultaneously. This solves the intermittent waiting problem of traditional single-bucket operation, ensures the continuity of lime material addition process, and significantly improves work efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the present invention.

[0021] Figure 4 This is a schematic diagram of the auger discharge assembly of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Hopper; 2. Second motor; 3. Discharge pipe; 4. Third motor; 5. Closing seat; 6. Feeding bucket; 7. Fixing frame; 8. First motor; 9. Weighing sensor; 10. Mounting base; 11. Assembly shaft; 12. Worm gear; 13. Worm; 14. Long shaft; 15. First bevel gear; 16. Protective shell; 17. Second bevel gear; 18. Screwdriver. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4As shown, a lime material quantitative dosing device is disclosed, comprising a silo 1, a discharge pipe 3 fixedly installed at the discharge port of the silo 1, and an auger discharge assembly jointly installed between the discharge pipe 3 and the silo 1. The auger discharge assembly includes a second motor 2, which is fixedly connected to the silo 1. A long shaft 14 is fixedly connected to the drive end of the second motor 2, and the long shaft 14 extends through the outer wall of the silo 1 into the interior, and is rotatably connected to the silo 1 in a sealed manner. The penetration point is rotatably supported by a double-row angular contact ball bearing embedded in the wall of the silo 1. A combination sealing structure of a skeleton oil seal and an O-ring is configured on the outside of the bearing to ensure dynamic sealing between the long shaft 14 and the silo 1, preventing... To prevent lime dust leakage, a first bevel gear 15 is fixedly connected to one end of the long shaft 14. A second bevel gear 17 is meshed with the outer surface of the first bevel gear 15. An auger 18 is fixedly connected to the bottom of the second bevel gear 17, and the outer wall of the auger 18 is in contact with the inner wall of the discharge pipe 3. The outer surfaces of the mounting shafts of the long shaft 14 and the auger 18 are jointly sealed and rotatably connected to a protective shell 16, which is fixedly connected to the hopper 1. The protective shell 16 is made of 304 stainless steel and forms a sealed rotatable connection with the mounting shafts of the long shaft 14 and the auger 18 through a bearing seat (the bearing inside the bearing seat is a deep groove ball bearing, which, together with a double-lip skeleton oil seal, achieves a two-stage seal).

[0026] The outer surface of the discharge pipe 3 and the bottom of the hopper 1 are fixedly connected to a fixed frame 7. A first motor 8 is fixedly connected to one side of the top of the fixed frame 7. The first motor 8 is a servo motor, model 110AEA12020-SH3, which has a precise angle control function. The drive shaft of the first motor 8 passes through the fixed frame 7 and is fixedly connected to a closing seat 5. The closing seat 5 is sealed and fitted to the bottom of the discharge pipe 3. The closing seat 5 is rotatably connected to the fixed frame 7. The closing seat 5 and the fixed frame 7 are rotatably connected through a bearing seat. The bearing seat body is fixed to the fixed frame 7. The inner ring of the bearing inside the bearing seat is fixedly connected to the mounting shaft of the closing seat 5.

[0027] Weighing rotating components are fixedly installed at both ends of the closed seat 5. The movable ends of the two weighing rotating components are fixedly connected to the feeding tank 6. Both weighing rotating components include a third motor 4, which is fixedly installed at the bottom of the closed seat 5. The drive end of the closed seat 5 passes through the closed seat 5 and is fixedly connected to a worm gear 13. A worm wheel 12 is meshed with the outer surface of the worm gear 13. An assembly shaft 11 is fixedly connected to one end of the worm wheel 12. The assembly shaft 11 passes through the closed seat 5 and is rotated and supported by two deep groove ball bearings (model 6205) at the passage. A weighing sensor 9 is fixedly embedded in the inner bottom of the assembly shaft 11. The detection end of the weighing sensor 9 is fixedly connected to a mounting base 10, and the mounting base 10 is fixedly connected to the feeding tank 6. The weighing sensor 9 is a strain gauge type weighing sensor, model Zemic H6F-50kg.

[0028] Working principle: In the initial state, the two feeding barrels 6 are symmetrically distributed, and the closing seat 5 is at the initial angle, ensuring that the bottom of the discharge pipe 3 is sealed and fitted with the closing seat 5 to prevent material leakage.

[0029] The weighing sensor 9 monitors the weight of the dosing bucket 6 in real time, with the initial value being the weight of the empty bucket.

[0030] When feeding, the first motor 8 starts and drives the closed seat 5 to rotate 90 degrees, so that the empty feeding bucket 6 rotates to the bottom of the discharge pipe 3. Then the second motor 2 drives the long shaft 14 to rotate, and then the first bevel gear 15 and the second bevel gear 17 work together to drive the auger 18 to rotate, so that the lime is transported from the silo 1 to the discharge pipe 3 and falls into the feeding bucket 6 below.

[0031] The weighing sensor 9 continuously monitors the weight of the feeding bucket 6. When the preset feeding amount is reached, the second motor 2 stops, the auger 18 stops rotating, and the quantitative feeding is completed.

[0032] Next, the first motor 8 runs, driving the closing seat 5 to rotate 180 degrees, moving the other feeding bucket 6 to below the discharge pipe 3, and moving the feeding bucket 6 containing lime to the feeding station.

[0033] The third motor 4 operates in response to the feeding bucket 6 at the feeding station. The third motor 4 drives the assembly shaft 11 to rotate 180 degrees through the reduction transmission of the worm gear 13 and the worm wheel 12, which rotates the feeding bucket 6 containing lime 180 degrees. The lime falls under the action of gravity and is reset after completion.

[0034] Repeat the above process to achieve continuous feeding of materials in alternating dual barrels, ensuring uninterrupted material supply.

[0035] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the first motor 8, the second motor 2, the third motor 4, and the weighing sensor 9 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lime material dosing device comprising a bin (1), characterized in that: The discharge port of the silo (1) is fixedly equipped with a discharge pipe (3), and a screw conveyor assembly is installed between the discharge pipe (3) and the silo (1). The outer surface of the discharge pipe (3) and the bottom of the hopper (1) are fixedly connected to a fixed frame (7). A first motor (8) is fixedly connected to one side of the top of the fixed frame (7). The drive shaft of the first motor (8) passes through the fixed frame (7) and is fixedly connected to a closing seat (5). The closing seat (5) is sealed and fitted to the bottom of the discharge pipe (3). Weighing rotating components are fixedly installed at both ends of the closed seat (5), and the movable ends of the two weighing rotating components are fixedly connected to the feeding bucket (6).

2. The lime material dosing device according to claim 1, characterized in that: The auger discharge assembly includes a second motor (2), which is fixedly connected to the hopper (1). The drive end of the second motor (2) is fixedly connected to a long shaft (14), which extends through the outer wall of the hopper (1) and is rotatably connected to the hopper (1). One end of the long shaft (14) is fixedly connected to a first bevel gear (15), and the outer surface of the first bevel gear (15) is meshed with a second bevel gear (17). The bottom of the second bevel gear (17) is fixedly connected to an auger (18), and the outer wall of the auger (18) is in contact with the inner wall of the discharge pipe (3).

3. The lime material dosing device according to claim 2, characterized in that: The long shaft (14) and the mounting shaft of the auger (18) are jointly sealed and rotatably connected to a protective shell (16), and the protective shell (16) is fixedly connected to the hopper (1).

4. The lime material dosing device according to claim 1, characterized in that: The closed seat (5) is rotatably connected to the fixed frame (7).

5. The lime material dosing device according to claim 1, characterized in that: Both of the weighing rotating components include a third motor (4), and the third motor (4) is fixedly installed at the bottom of the closed seat (5). The drive end of the closed seat (5) is provided through the closed seat (5) and is fixedly connected to a worm (13). The outer surface of the worm (13) is meshed with a worm wheel (12). One end of the worm wheel (12) is fixedly connected to an assembly shaft (11), and the assembly shaft (11) is provided through the closed seat (5) and is rotatably connected to the closed seat (5).

6. The lime material dosing device according to claim 5, characterized in that: A weighing sensor (9) is fixedly embedded in the inner bottom of the assembly shaft (11). The detection end of the weighing sensor (9) is fixedly connected to a mounting base (10), and the mounting base (10) is fixedly connected to the dosing bucket (6).

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