Limestone powder blanking equipment

Abstract

The utility model relates to limestone powder discharging equipment, and relates to the technical field of mineral powder production equipment.The discharging equipment comprises a stock bin, a first stirring assembly, a conveying assembly and a drying mechanism for drying limestone powder, and the drying mechanism comprises a transfer bin for transferring and temporarily storing the limestone powder discharged out of the conveying assembly from the stock bin; the gas inlet assembly is used for introducing dry gas into the transfer bin; the exhaust assembly exhausts the gas out of the transfer bin; and the second stirring assembly is used for stirring the limestone powder. Limestone powder in a stock bin is discharged into a transfer bin, a gas inlet assembly continuously discharges dry gas into the transfer bin, a second stirring assembly stirs the limestone powder in the transfer bin, an exhaust assembly discharges gas obtained after the limestone powder is dried out of the transfer bin, and then the limestone powder is discharged into a conveying pipe. The friction force and the adhesive force of the limestone powder particles in the material conveying pipe are reduced, so that the limestone powder can move in the material conveying pipe conveniently.

Description

Technical Field

[0001] This application relates to the technical field of mineral powder production equipment, and in particular to a limestone powder feeding device. Background Technology

[0002] Limestone powder is a fine powder obtained by crushing and grinding natural limestone, with calcium carbonate (CaCO3) as its main chemical component. Limestone powder has wide applications in the construction industry; it can be used as an important raw material for cement production and as a filler in mortar to improve its workability and water retention.

[0003] Currently, Chinese patent CN211870807U discloses a limestone feeding and conveying device, in which a first stirring component stirs the limestone powder in the hopper and causes it to fall into the conveying component. The conveying motor drives the conveying shaft to rotate, thereby moving the limestone powder in the conveying pipe to transport the limestone powder to the designated location.

[0004] However, due to the small particle size of limestone powder, the specific surface area between the limestone powder particles is large, resulting in greater friction and adhesion between the limestone powder particles. In particular, when limestone powder absorbs water molecules from the air, it further increases the interaction force between the limestone powder particles, making the force between the conveyor shaft and the limestone powder greater. This makes it difficult to move the limestone powder in the conveying pipe, making the conveying components prone to damage and ultimately reducing the service life of the conveying components. Utility Model Content

[0005] In order to reduce the friction and adhesion of limestone powder particles in the conveying pipe, thereby facilitating the movement of limestone powder in the conveying pipe, this application provides a limestone powder feeding device.

[0006] This application provides a limestone powder feeding device, which adopts the following technical solution:

[0007] A limestone powder feeding device includes a hopper, a first stirring component for stirring the limestone powder inside the hopper, a conveying component for transporting the limestone powder to a designated position at the bottom of the hopper, and a drying mechanism for drying the limestone powder between the bottom of the hopper and the conveying component. The drying mechanism includes:

[0008] A transfer silo is located at the bottom of the silo and is used to temporarily store limestone powder discharged from the silo conveying assembly.

[0009] An air intake assembly is disposed on the transfer chamber and is used to introduce dry gas into the transfer chamber;

[0010] An exhaust assembly is provided on the transfer chamber and is used to exhaust the gas produced after drying the limestone powder from the transfer chamber.

[0011] The second mixing component is located inside the transfer chamber and mixes the limestone powder.

[0012] By adopting the above technical solution, limestone powder in the silo is discharged into the transfer silo. Dry gas is continuously discharged into the transfer silo through the air intake component. The second stirring component stirs the limestone powder in the transfer silo, which facilitates the mixing of the dry gas discharged by the air intake component with the limestone powder. Then, the gas that has dried the limestone powder is discharged from the transfer silo through the exhaust component, which separates the limestone powder particles and reduces the moisture in the limestone powder. Then, the limestone powder is discharged into the conveying pipe, which reduces the friction and adhesion of the limestone powder particles in the conveying pipe, thus facilitating the movement of the limestone powder in the conveying pipe.

[0013] Furthermore, the transit warehouse includes:

[0014] A container body, which is mounted on the conveying assembly and communicates with the interior of the conveying assembly;

[0015] The silo cover is detachably mounted on the silo body by bolts and seals the top of the silo body. The top of the silo cover is connected to the bottom of the silo.

[0016] By adopting the above technical solution, the silo cover is installed on the silo body with bolts to form a transfer silo for drying limestone powder. At the same time, when it is necessary to clean and repair the interior of the transfer silo, the silo cover can be removed from the silo body, thereby improving the applicability of the transfer silo.

[0017] Furthermore, the interior of the chamber has a conical structure, and the diameter of the end furthest from the conveying component is larger than the diameter of the end closest to the conveying component.

[0018] By adopting the above technical solution, the conical structure of the silo facilitates the discharge of limestone powder from the transfer silo into the conveying assembly.

[0019] Furthermore, the air intake assembly is disposed on the chamber body, and the air intake assembly includes:

[0020] An air intake frame is fitted onto the outside of the chamber body, and the air intake frame and the outer wall of the chamber body form a sealed air intake cavity. The side wall of the chamber body has multiple sets of air intake holes that allow gas to enter the chamber body only through the air intake cavity.

[0021] An air intake pipe is disposed on the air intake frame and is used to introduce dry gas into the air intake chamber.

[0022] By adopting the above technical solution, the air inlet pipe discharges the drying gas into the air inlet chamber, and the drying gas in the air inlet chamber is evenly discharged into the transfer chamber through multiple sets of air inlets. At the same time, the air inlets prevent the limestone powder in the transfer chamber from entering the air inlet chamber, thereby facilitating the drying of the limestone powder in the transfer chamber by the drying gas.

[0023] Furthermore, the second stirring assembly includes:

[0024] The second rotating shaft is rotatably mounted inside the transfer compartment;

[0025] The second stirring rod, and multiple sets of the second stirring rods are staggered on the second rotating shaft and rotate with the second rotating shaft to stir the limestone powder in the transfer chamber;

[0026] The second drive motor is mounted on the transfer compartment and is used to drive the second rotating shaft to rotate.

[0027] By adopting the above technical solution, the second drive motor drives the second rotating shaft to rotate, which in turn drives multiple sets of second stirring rods to stir the limestone powder in the transfer chamber, thereby improving the drying effect of the gas entering the air inlet on the limestone powder.

[0028] Furthermore, the second rotating shaft is hollow inside, the second stirring rod is hollow inside and communicates with the inside of the second rotating shaft, and the second stirring rod is provided with multiple sets of vent holes at intervals, which are only used to discharge the gas inside the second stirring rod into the transfer chamber. The inside of the second rotating shaft is connected to the inside of the air inlet pipe.

[0029] By adopting the above technical solution, when multiple sets of second stirring rods are stirring limestone powder in the transfer chamber, the dry gas in the air inlet pipe enters the multiple sets of second stirring rods from the second rotating shaft and enters the transfer chamber through multiple sets of air vents. As the second stirring rods stir the limestone powder, the contact effect between the dry gas and the limestone powder is improved, and the drying effect of the limestone powder is ultimately improved.

[0030] Furthermore, a circulation assembly is provided between the intake assembly and the exhaust assembly, the circulation assembly comprising:

[0031] A circulation pipe, the two ends of which are respectively connected to the intake pipe and the interior of the exhaust assembly;

[0032] A circulation pump, which is installed on a circulation pipe and is used to drive the gas flow within the circulation pipe;

[0033] A heater, which is disposed on the circulation pipe and is used to heat the gas discharged from the exhaust assembly;

[0034] A dryer, which is installed on the circulation pipe and is used to dry the gas discharged from the exhaust assembly.

[0035] By adopting the above technical solution, the circulating pump drives the gas to flow in the circulating pipe, and the heater reheats the circulating gas to the specified temperature, which improves the drying effect on limestone powder in the transfer silo. At the same time, the dryer absorbs the moisture in the gas in the circulating pipe, thereby reducing the moisture content in the gas in the circulating pipe and facilitating the drying of limestone powder.

[0036] Furthermore, the intake pipe is equipped with a detector for detecting the temperature and humidity of the gas inside the intake pipe. The detector is electrically connected to the heater and dryer and adjusts the working state of the heater and dryer according to the detection results.

[0037] By adopting the above technical solution, the detector monitors the temperature and humidity of the gas in the intake pipe in real time. By controlling the opening degree of the heater and dryer, the temperature and humidity of the gas in the intake pipe are controlled so that the temperature and humidity of the gas in the intake pipe are kept within a specified range.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] By discharging limestone powder from the silo into the transfer silo, and continuously injecting dry gas into the transfer silo through the air inlet pipe, the second drive motor drives multiple sets of stirring rods through the second rotating shaft to stir the limestone powder in the transfer silo. This facilitates the mixing of the dry gas injected into the air inlet pipe with the limestone powder. Then, the gas that has dried the limestone powder is discharged from the transfer silo through the exhaust pipe, which separates the limestone powder particles from each other and reduces the moisture content in the limestone powder. The limestone powder is then discharged into the conveying pipe, which reduces the friction and adhesion of the limestone powder particles in the conveying pipe, thus facilitating the movement of the limestone powder in the conveying pipe. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the material feeding equipment structure of this application;

[0041] Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0042] Figure 3 This is a schematic diagram of the drying mechanism structure of this application, in which the side wall of the transfer chamber, the air intake frame, and the exhaust frame side wall are shown in cross section.

[0043] Reference numerals: 1. Hopper; 2. First mixing assembly; 3. Conveying assembly; 31. Conveying pipe; 32. Conveying shaft; 33. Conveying motor; 4. Drying mechanism; 41. Transfer hopper; 411. Hopper body; 412. Hopper cover; 413. Transfer chamber; 42. Air intake assembly; 421. Air intake frame; 422. Air intake pipe; 423. Air intake chamber; 43. Exhaust assembly; 431. Exhaust frame; 432. Exhaust pipe; 433. Exhaust chamber; 5. Second mixing assembly; 51. Second rotating shaft; 52. Second mixing rod; 53. Second drive motor; 6. Circulation assembly; 61. Circulation pipe; 62. Circulation pump; 63. Heater; 64. Dryer; 7. Detector. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0045] This application discloses a limestone powder feeding device.

[0046] Reference Figure 1 and Figure 2 A limestone powder feeding device includes a hopper 1, a first stirring component 2 for stirring limestone powder in the hopper 1, a conveying component 3 for conveying limestone powder to a designated position at the bottom of the hopper 1, and a drying mechanism 4 for drying limestone powder between the bottom of the hopper 1 and the conveying component 3.

[0047] Reference Figure 1 and Figure 2 The silo 1 is used to store limestone powder. The first stirring component 2 is installed inside the silo 1. The first stirring component 2 is used to stir the bottom of the silo 1 and make it easier for the limestone powder in the silo 1 to fall out of the silo 1. The first stirring component 2 includes a first drive motor, a first rotating shaft and a first stirring rod. The first drive motor is fixedly installed on the silo 1, the first rotating shaft is rotatably installed on the silo 1, and multiple sets of first stirring rods are staggered on the first rotating shaft. The first drive motor drives the first rotating shaft to rotate, thereby driving multiple sets of first stirring rods to stir the limestone powder in the silo 1, so as to facilitate the discharge of the limestone powder in the silo 1.

[0048] Reference Figure 1 and Figure 2The conveying assembly 3 is located at the bottom of the drying mechanism 4. The conveying assembly 3 is used to discharge the limestone powder dried by the drying mechanism 4 into a designated position. The conveying assembly 3 includes a conveying pipe 31, a conveying shaft 32, and a conveying motor 33. The conveying pipe 31 is fixedly installed at the bottom of the hopper 1 and is sealed to the outlet of the drying mechanism 4. The conveying shaft 32 is a spiral conveying shaft 32, which is rotatably installed inside the conveying pipe 31. The conveying motor 33 is fixedly installed at one end of the conveying pipe 31 and is used to drive the conveying shaft 32 to rotate, thereby driving the limestone powder in the conveying pipe 31 to move spirally, and finally transporting the limestone powder in the conveying pipe 31 to the designated position.

[0049] Reference Figure 2 and Figure 3 The drying mechanism 4 includes a transfer chamber 41, an air inlet assembly 42, and an exhaust assembly 43. The transfer chamber 41 is located at the bottom of the silo 1 and is used to temporarily store the limestone powder discharged from the output assembly of the silo 1. The transfer chamber 41 includes a chamber body 411 and a chamber cover 412. The bottom of the chamber body 411 has a discharge port to facilitate the discharge of limestone powder. The bottom of the chamber body 411 is fixedly connected to the conveying pipe 31 to facilitate the sealed discharge of limestone powder from the chamber body 411 into the conveying pipe 31. The interior of the chamber body 411 has a conical structure, and the diameter of the end of the chamber body 411 away from the conveying pipe 31 is larger than that of the end closer to the conveying pipe 31. The diameter of one end of the conveying pipe 31; the silo cover 412 is detachably installed on the end of the silo body 411 away from the conveying pipe 31 by bolts. The silo cover 412 seals the top of the silo body 411, thereby forming a transfer cavity 413 between the silo body 411 and the silo cover 412, which facilitates the transfer of limestone powder. At the same time, when it is necessary to clean and repair the inside of the transfer silo 41, the silo cover 412 can be removed from the silo body 411, thereby improving the applicability of the transfer silo 41; the silo cover 412 is connected to the bottom of the silo 1, so as to facilitate the discharge of limestone powder in the silo 1 into the transfer cavity 413 for drying.

[0050] Reference Figure 2 and Figure 3An air intake assembly 42 is mounted on the chamber 411. The air intake assembly 42 is used to introduce dry gas into the transfer chamber 41. The air intake assembly 42 includes an air intake frame 421 and an air intake pipe 422. The air intake frame 421 is fitted onto the outer side of the chamber 411, forming a sealed air intake chamber 423 between the air intake frame 421 and the outer wall of the chamber 411. Multiple sets of air intake holes are provided on the side wall of the chamber 411, allowing gas to enter the chamber 411 solely through the air intake chamber 423. The air intake pipe 422 is fixedly mounted on the air intake frame 421 and is used to introduce dry gas into the air intake chamber 423. Dry gas is introduced and evenly discharged into the transfer chamber 41 through multiple sets of air inlets in the air inlet chamber 423. At the same time, the air inlets prevent limestone powder in the transfer chamber 41 from entering the air inlet chamber 423, thereby facilitating the drying of limestone powder in the transfer chamber 41 by the dry gas. In this embodiment, the air inlet consists of a round hole opened on the chamber body 411 and a dustproof and breathable membrane tightly attached to the side wall of the chamber body 411, thereby enabling gas to enter the chamber body 411 while preventing limestone powder in the chamber body 411 from entering the air inlet chamber 423.

[0051] Reference Figure 1 The exhaust assembly 43 is installed on the transfer chamber 41. The exhaust assembly 43 is used to discharge the gas after drying the limestone powder from the transfer chamber 41. The exhaust assembly 43 includes an exhaust frame 431 and an exhaust pipe 432. The exhaust frame 431 is sleeved on the outside of the chamber cover 412, and a sealed exhaust chamber 433 is formed between the exhaust frame 431 and the outer wall of the chamber cover 412. Multiple sets of exhaust holes are opened on the side wall of the chamber cover 412 for gas to be discharged from the chamber 411 into the exhaust chamber 433. The exhaust pipe 432 is fixedly installed on the exhaust frame 431. The exhaust pipe 432 is used to discharge the gas in the exhaust chamber 433, thereby discharging the gas that has absorbed moisture from the limestone powder from the transfer chamber 41, which improves the dryness of the limestone powder in the transfer chamber 41.

[0052] Reference Figure 2 and Figure 3The drying mechanism 4 also includes a second stirring assembly 5, which is disposed on the transfer chamber 41. The second stirring assembly 5 is used to stir the limestone powder in the transfer chamber 41, thereby facilitating the mixing of the drying gas with the limestone powder in the transfer chamber 41. The second stirring assembly 5 includes a second rotating shaft 51, second stirring rods 52, and a second drive motor 53. The second rotating shaft 51 is rotatably installed in the transfer chamber 41. Multiple sets of second stirring rods 52 are arranged and staggered on the second rotating shaft 51. The multiple sets of second stirring rods 52 stir the limestone powder in the transfer chamber 41 as the second rotating shaft 51 rotates. The second drive motor 53 is fixedly installed in the transfer chamber 41 and is used to drive the second rotating shaft 51 to rotate. When the second drive motor 53 drives the second rotating shaft 51 to rotate, it drives the multiple sets of second stirring rods 52 to stir the limestone powder in the transfer chamber 41, thereby facilitating sufficient contact between the drying gas and the limestone powder.

[0053] Reference Figure 2 and Figure 3 The second rotating shaft 51 is hollow inside, and the second stirring rod 52 is hollow inside. The interiors of the second rotating shaft 51 and the second stirring rod 52 are interconnected. The second stirring rod 52 has multiple sets of vent holes at intervals, which are only used to discharge the gas inside the second stirring rod 52 into the transfer chamber 41. The interior of the second rotating shaft 51 is connected to the interior of the air inlet pipe 422, so as to facilitate the discharge of some gas in the air inlet pipe 422 into the interior of the second rotating shaft 51, and finally discharge it into the limestone powder through the vent holes on the second stirring rod 52.

[0054] Reference Figure 2 and Figure 3A circulation assembly 6 is provided between the intake assembly 42 and the exhaust assembly 43. The circulation assembly 6 includes a circulation pipe 61, a circulation pump 62, a heater 63, and a dryer 64. The two ends of the circulation pipe 61 are respectively connected to the interior of the intake pipe 422 and the exhaust pipe 432. The circulation pump 62 is fixedly installed on the circulation pipe 61 and is used to drive the gas flow within the circulation pipe 61. The heater 63 is fixedly installed on the circulation pipe 61 and is used to heat the gas discharged from the exhaust pipe 432 to a specified temperature so that the gas discharged from the intake pipe 422 can be reheated in the transfer chamber 41. The dryer 64 is fixedly installed on the circulation pipe 61 and is located between the heater 63 and the exhaust pipe. The dryer 64 is used to... The gas discharged from the exhaust pipe 432 is dried to facilitate its re-entry into the transfer chamber 41 via the intake pipe 422. Specifically, the circulation pump 62 and dryer 64 are started to heat the gas in the circulation pipe 61, and then the gas in the circulation pipe 61 is discharged into the transfer chamber 41 through the intake pipe 422 to dry the limestone powder in the transfer chamber 41. At the same time, the moisture in the limestone powder is carried out with the gas from the exhaust pipe. The gas in the circulation pipe 61 is dried by the dryer 64, and then heated again by the heating pipe to finally dry the limestone powder in the transfer chamber 41. In this embodiment, the drying gas is a safe gas that does not react with limestone powder, such as nitrogen.

[0055] Reference Figure 2 and Figure 3 A detector 7 for detecting the temperature and humidity of the gas inside the intake pipe 422 is fixedly installed inside the intake pipe 422. The detector 7 is electrically connected to the heater 63 and the dryer 64. The detector 7 adjusts the working state of the heater 63 and the dryer 64 according to the detection results, so that the temperature and humidity of the gas discharged from the intake pipe 422 are kept within a certain range, which facilitates the drying of limestone powder in the transfer chamber 41.

[0056] The working principle of this application embodiment is as follows:

[0057] The limestone powder in silo 1 is discharged into transfer silo 41. Dry gas is continuously discharged into transfer silo 41 through air inlet pipe 422. The second drive motor 53 drives multiple sets of stirring rods through the second rotating shaft 51 to stir the limestone powder in transfer silo 41, thereby facilitating the mixing of the dry gas discharged into air inlet pipe 422 with the limestone powder. Then, the gas after drying the limestone powder is discharged from transfer silo 41 through exhaust pipe 432, which separates the limestone powder particles from each other and reduces the moisture in the limestone powder. Then, the limestone powder is discharged into conveying pipe 31 to reduce the friction and adhesion of the limestone powder particles in the conveying pipe, thereby facilitating the movement of the limestone powder in the conveying pipe.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A limestone powder feeding device, comprising a silo (1), wherein a first stirring component (2) for stirring limestone powder in the silo (1) is provided therein, and a conveying component (3) for conveying limestone powder to a designated position is provided at the bottom of the silo (1), characterized in that: A drying mechanism (4) for drying limestone powder is provided between the bottom of the silo (1) and the conveying assembly (3). The drying mechanism (4) includes: The transfer bin (41) is located at the bottom of the silo (1) and is used to temporarily store the limestone powder in the conveying assembly (3) discharged from the silo (1). An air intake assembly (42) is disposed on a transfer chamber (41) and is used to introduce dry gas into the transfer chamber (41); Exhaust assembly (43), which is disposed on transfer chamber (41) and used to exhaust the gas after drying limestone powder from transfer chamber (41). The second mixing component (5) is located in the transfer chamber (41) and mixes the limestone powder.

2. The limestone powder feeding device according to claim 1, characterized in that: The transit warehouse (41) includes: The container body (411) is disposed on the conveying assembly (3) and communicates with the interior of the conveying assembly (3); The silo cover (412) is detachably mounted on the silo body (411) by bolts and seals the top of the silo body (411). The top of the silo cover (412) is connected to the bottom of the silo (1).

3. The limestone powder feeding device according to claim 2, characterized in that: The internal structure of the chamber (411) is conical, and the diameter of the end away from the conveying component (3) is larger than the diameter of the end near the conveying component (3).

4. The limestone powder feeding device according to claim 3, characterized in that: The air intake assembly (42) is disposed on the housing (411), and the air intake assembly (42) includes: An air intake frame (421) is fitted on the outside of the chamber (411). The air intake frame (421) and the outer wall of the chamber (411) form a sealed air intake cavity (423). Multiple sets of air intake holes are provided on the side wall of the chamber (411) for gas to enter the chamber (411) through the air intake cavity (423). An air intake pipe (422) is disposed on an air intake frame (421) and is used to introduce dry gas into an air intake chamber (423).

5. The limestone powder feeding device according to claim 4, characterized in that: The second stirring assembly (5) includes: The second rotating shaft (51) is rotatably disposed inside the transfer compartment (41); The second stirring rod (52) is arranged in a staggered manner on the second rotating shaft (51) and rotates with the second rotating shaft (51) to stir the limestone powder in the transfer chamber (41); The second drive motor (53) is mounted on the transfer compartment (41) and is used to drive the second rotating shaft (51) to rotate.

6. The limestone powder feeding device according to claim 5, characterized in that: The second rotating shaft (51) is hollow inside, the second stirring rod (52) is hollow inside and communicates with the interior of the second rotating shaft (51), and the second stirring rod (52) is provided with multiple sets of ventilation holes at intervals, which are only used to discharge the gas inside the second stirring rod (52) into the transfer chamber (41). The interior of the second rotating shaft (51) is communicated with the interior of the air inlet pipe (422).

7. The limestone powder feeding device according to claim 4, characterized in that: A circulation assembly (6) is provided between the intake assembly (42) and the exhaust assembly (43), the circulation assembly (6) comprising: The circulation pipe (61) has two ends connected to the intake pipe (422) and the exhaust assembly (43) respectively; A circulation pump (62) is provided on a circulation pipe (61) and is used to drive the gas flow in the circulation pipe (61); A heater (63) is provided on the circulation pipe (61) and is used to heat the gas discharged from the exhaust assembly (43); A dryer (64) is provided on the circulation pipe (61) and is used to dry the gas discharged from the exhaust assembly (43).

8. The limestone powder feeding device according to claim 7, characterized in that: The air inlet pipe (422) is equipped with a detector (7) for detecting the temperature and humidity of the gas inside the air inlet pipe (422). The detector (7) is electrically connected to the heater (63) and the dryer (64) and adjusts the working state of the heater (63) and the dryer (64) according to the detection results.

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