Discharging device for blocky lime calcining kiln opening

Abstract

The invention provides a blocky lime calcining kiln opening discharging device, and relates to the technical field of lime firing. The device comprises a sorting shell, a discharging inlet is formed in the upper portion of the sorting shell, a rotating disc is installed below the discharging inlet, the rotating disc is connected with a motor through a rotating shaft, the bottom of the sorting shell is connected with a plurality of barrels with different diameters, the barrels with the large diameters are arranged outside the barrels with the small diameters in a sleeving mode, and the barrels with the small diameters are connected with the rotating shaft. The barrel bodies form a plurality of material collecting spaces with annular or circular vertical projections, the bottom of each material collecting space is connected with a conical hopper through a pipeline, a material collecting conical barrel for collecting materials is placed at the bottoms of the conical hoppers, the material collecting conical barrel comprises a plurality of conical barrels which are arranged in a sleeved mode, and the conical barrels are connected with the conical hoppers through pipelines. A plurality of discharging spaces are formed among the conical barrels, and discharging openings of the conical hoppers connected with the different material collecting spaces are connected with the different discharging spaces. The discharging blocking risk can be reduced, and therefore efficient discharging can be achieved.

Description

Technical Field

[0001] This invention relates to the field of lime calcination technology, and in particular to a discharge device for calcining block lime at the kiln opening. Background Technology

[0002] Currently, most unloading devices at the kiln openings of block lime calcination plants suffer from problems such as low automation, poor unloading efficiency, high energy consumption, and unstable unloading processes. Traditional unloading devices frequently experience material blockages during the unloading process, leading to reduced kiln operating efficiency. On average, each kiln experiences multiple production shutdowns per month due to unloading issues, severely impacting lime production progress and enterprise economic benefits. Furthermore, manual intervention in unloading operations not only increases labor costs but also poses significant safety hazards.

[0003] With the advancement of green and intelligent development trends in the building materials industry, traditional unloading devices can no longer meet the industry's development needs, and there is an urgent need to develop new and efficient unloading devices.

[0004] To address the aforementioned issues, there is an urgent need for a kiln unloading device capable of efficiently unloading block lime calcination materials. Summary of the Invention

[0005] This invention provides a discharge device for calcining block lime at the kiln opening, which can prevent blockage and discharge material efficiently. The technical solution of this invention is as follows: A block lime calcination kiln unloading device includes a sorting shell with an unloading inlet at the top and a rotating disk installed below the unloading inlet. The rotating disk is connected to a motor via a shaft. Multiple cylinders of different diameters are connected to the bottom of the sorting shell, with the larger diameter cylinders fitted over the smaller diameter cylinders. The multiple cylinders form multiple collection spaces with a vertical projection of annular or circular. Each collection space is connected to a conical hopper at its bottom via a pipe. A collection conical cylinder for collecting materials is placed at the bottom of the multiple conical hoppers. The collection conical cylinder includes multiple fitted conical cylinders, and multiple discharge spaces are formed between the multiple conical cylinders. The discharge ports of the conical hoppers connecting different collection spaces are connected to different discharge spaces.

[0006] Preferably, each of the material collection spaces is connected to multiple conical hoppers at its bottom via multiple pipes, and the discharge ports of the conical hoppers connected to the same material collection space are connected to the same discharge space.

[0007] Preferably, multiple conical hoppers connected to the same feeding space are evenly distributed around the feeding space, and the feeding channels of the multiple conical hoppers are spirally distributed along the outer wall of the feeding space.

[0008] Preferably, the bottom of the conical hopper is connected to a funnel-shaped deformable structure, the deformable structure comprising a funnel-shaped deformable body made of shape memory material as the fixed phase and a protective film wrapped around the outside of the deformable body, the protective film being connected to the side wall of the conical hopper near the bottom, and the upper end of the deformable body being adhered to the bottom edge of the conical hopper; The deformable body is connected to a resistance wire, and the resistance wire is connected to a power source.

[0009] Preferably, the material used to prepare the deformable body includes a shape memory polymer material.

[0010] Preferably, the shape memory polymer material is shape memory polyurethane, trans-polyisoprene, or shape memory epoxy resin.

[0011] Preferably, the protective film is made of glass fiber, thermoplastic polyurethane elastomer, or thermoplastic vulcanized rubber.

[0012] Preferably, the feeding channel of the conical hopper is equipped with a solenoid valve.

[0013] Preferably, the bottom plate of the sorting housing protrudes upward from the center, so that the bottom of each collection space slopes outward and downward.

[0014] Preferably, the collecting cone is connected to a dust removal device.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: By installing a rotating disc below the discharge inlet, the disc, driven by a motor, spins the material entering through the inlet to all sides. Based on particle size, the material falls into different collection spaces from near to far, thus achieving initial particle sorting. The rotating disc and multiple nested cylinders ensure that materials of different sizes enter different collection spaces. A conical hopper is connected to the bottom of each collection space via a pipe. The conical hopper allows the material to slide along the conical wall to the outlet for efficient discharge. The material in each conical hopper originates from a collection space with relatively uniform particle size after initial sorting, reducing the risk of material blockage. The material output from the conical hopper is collected and discharged through a collecting conical cylinder. The outer surface of the discharge space formed by multiple conical cylinders is conical, also achieving material collection and rapid discharge. Similarly, the material in each discharge space is relatively uniform. In summary, through sorting-concentration-aggregation, the risk of material blockage is greatly reduced, thus achieving efficient discharge. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a block lime calcination kiln unloading device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the conical hopper in an embodiment of the present invention; Figure 3 This is a schematic diagram of the deformed structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the dust removal device in an embodiment of the present invention; Figure 5 This is a schematic diagram of the dust removal component in an embodiment of the present invention; Figure 6 This is a schematic diagram of the carbon fiber filter layer in an embodiment of the present invention.

[0018] In the picture: 100 - Sorting housing; 101 - Unloading Inlet; 102 - Rotary disk; 103 - Cylinder; 200-conical hopper; 201-Deformation Main Body; 202 - Protective film; 300-conical cylinder; 1- Cylindrical shell; 11-Collection bin; 2-Dust removal and filtration unit; 21-Plate body; 22-Backflush pipe; 23- Annular insulating sheet; 24-Carbon fiber filter layer; 25-Conductive fiber filter layer; 26- Circular insulating sheet; 27-Insulating baffle; 3-Drive device; 4-Preprocessing channel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, this embodiment provides a block lime calcination kiln unloading device, including a sorting shell 100, a unloading inlet 101 on the top of the sorting shell 100, a rotating disk 102 installed below the unloading inlet 101, the rotating disk 102 being connected to a motor via a rotating shaft, and multiple cylinders 103 of different diameters connected to the bottom of the sorting shell 100, with the larger diameter cylinder 103 fitted over the smaller diameter cylinder 103, the multiple cylinders 103 forming multiple collection spaces with a vertical projection of annular or circular, each collection space being connected to a conical hopper 200 at its bottom via a pipe, and a collection cone for collecting materials placed at the bottom of the multiple conical hoppers 200, the collection cone including multiple fitted conical cylinders 300, multiple discharge spaces being formed between the multiple conical cylinders 300, and the discharge ports of the conical hoppers 200 connecting different collection spaces being connected to different discharge spaces.

[0021] In this embodiment, the rotating disk 102 can rotate the material entering through the discharge inlet 101 to all sides, and the material falls into different collection spaces from near to far according to the particle size. This achieves preliminary sorting of the material particles. The main reason for blockage in the discharge device is the uneven particle size of the material; small particles fill the gaps between larger particles, causing flow blockage. Therefore, by setting up the rotating disk 102 and multiple sleeved cylinders 103, materials of different particle sizes enter different collection spaces. A conical hopper 200 is connected to the bottom of the collection space via a pipe. The conical hopper 200 allows the material to slide along the conical wall to the outlet for efficient discharge. The material in each conical hopper 200 comes from a collection space with relatively uniform particle size after preliminary sorting, reducing the risk of material blockage. The material output from the conical hopper 200 is collected and discharged through the collecting conical cylinder. The outer surface of the discharge space formed by multiple conical cylinders 300 is conical, which also has the effect of material collection and rapid discharge. Similarly, the material in each discharge space is relatively uniform. In summary, through sorting-collection-convergence, the risk of material blockage is greatly reduced.

[0022] Of course, it can also be used in conjunction with air cannons and vibration devices to prevent blockages.

[0023] In some embodiments of the present invention, the bottom of each collection space is connected to multiple conical hoppers 200 via multiple pipes, and the discharge ports of the conical hoppers 200 connected to the same collection space are connected to the same discharge space.

[0024] In this embodiment, multiple conical hoppers 200 improve the unloading efficiency. Specifically, the material particles in multiple conical hoppers 200 connected to the same collection space are consistent. Therefore, conical hoppers 200 connected to the same discharge space can receive and unload materials simultaneously.

[0025] In some embodiments of the present invention, multiple conical hoppers 200 connected to the same feeding space are evenly distributed around the feeding space, and the feeding channels of the multiple conical hoppers 200 are spirally distributed along the outer wall of the feeding space.

[0026] In this embodiment, the material output from the discharge channel of the conical hopper 200, which is uniformly spirally distributed in the same discharge space, moves spirally downward along the wall of the conical cylinder 300. Spiral discharge can improve the discharge efficiency and prevent material blockage.

[0027] In some embodiments of the present invention, the bottom of the conical hopper 200 is connected to a funnel-shaped deformable structure. The deformable structure includes a funnel-shaped deformable body 201 made of shape memory material as the fixed phase and a protective film 202 wrapped around the outside of the deformable body 201. The protective film 202 is connected to the side wall of the conical hopper 200 near the bottom. The upper end of the deformable body 201 is bonded to the bottom edge of the conical hopper 200. The deformable body 201 is connected to a resistance wire, and the resistance wire is connected to a power source.

[0028] The main cause of the unloading blockage is the bridging effect at the outlet of the conical hopper 200, where a material accumulation resembling an arch bridge forms above the outlet. To address this unexpected blockage, the outlet of the conical hopper 200 is designed as a shape memory structure. This structure has shape memory functionality; when blockage is detected by means of distance measurement, material flow rate, or pressure, the deformable body 201 can be heated by resistance wire to raise its temperature above the glass transition temperature. The deformable body 201 softens, and the bridging load is primarily at its two ends, i.e., at the outlet of the conical hopper 200. At this point, the outlet softens and deforms under pressure, breaking down the bridging foundation and allowing the outlet to expand under pressure, releasing the blocked material. After the material is discharged, the deformable body 201 is reheated above the glass transition temperature, returning to its funnel shape. After cooling, it maintains the funnel shape to facilitate material discharge.

[0029] In this embodiment, in order to protect the deformable body 201, a protective film 202 with wear-resistant function can be provided on its exterior.

[0030] It should be noted that since multiple conical hoppers 200 are set, the blockage of a single conical hopper 200 has little impact on the overall feeding efficiency. After the deformed body 201 is heated and deformed back to the funnel shape, feeding can continue.

[0031] It is understandable that thermally conductive filler can be added inside the deformable body 201, and an external cooling device can be installed to increase the rate of temperature change.

[0032] It is understandable that the deformable body 201 and the protective film 202 can be bonded to the conical hopper 200 body, or they can be connected by countersunk screws and / or plug-in connections.

[0033] It should be noted that the bottom of the conical hopper 200 is connected to the bottom conveying pipe through a corrugated hose, and the deformable structure is wrapped inside the corrugated hose so that the powder will not be discharged into the atmosphere and pollute the environment during the deformation process.

[0034] In some embodiments of the present invention, the material used to prepare the deformable body includes shape memory polymer materials.

[0035] In some embodiments of the present invention, the shape memory polymer material is shape memory polyurethane, trans polyisoprene, or shape memory epoxy resin.

[0036] In some embodiments of the present invention, the protective film 202 is prepared from glass fiber, thermoplastic polyurethane elastomer, or thermoplastic vulcanized rubber.

[0037] In this embodiment, in order to match the deformability of the deformable body 201, some materials that are both wear-resistant and elastic can be selected.

[0038] In some embodiments of the present invention, a solenoid valve is installed in the feeding channel of the conical hopper 200. The solenoid valve can be closed when the conical hopper 200 is blocked, thereby emptying the blocked material in the conical hopper 200 by deformation, and then heat-treating it to restore its funnel shape.

[0039] In some embodiments of the present invention, the bottom plate of the sorting housing 100 protrudes upward from its center, causing the bottom of each collection space to slope outward and downward. The downward-sloping bottom facilitates the accumulation of materials.

[0040] In some embodiments of the present invention, the collecting cone 300 is connected to a dust removal device.

[0041] Please refer to Figures 4 to 6 This embodiment provides a dust removal device, including a cylindrical housing 1 and a dust removal and filtration unit 2; The bottom of the cylindrical shell 1 is equipped with a material collection bin 11, the side wall of the cylindrical shell 1 is provided with a material inlet, and the dust removal and filtration unit 2 is installed on the top of the cylindrical shell 1; The dust removal and filtration unit 2 includes a plate 21 and multiple dust removal components. The plate 21 seals the upper port of the cylindrical housing 1. Multiple through holes are provided on the plate 21, and the multiple dust removal components are respectively installed in the multiple through holes. The dust removal components include a backflush pipe 22, an annular insulating sheet 23, a cylindrical carbon fiber filter layer 24, and a cylindrical conductive fiber filter layer 25. One end of the carbon fiber filter layer 24 is installed on the outer edge of the annular insulating sheet 23, and one end of the conductive fiber filter layer 25 is installed on the inner edge of the annular insulating sheet 23. The ends of the carbon fiber filter layer 24 and the conductive fiber filter layer 25 away from the annular insulating sheet 23 are sealed by a circular insulating sheet 26. The conductive fiber filter layer 25 is grounded through a wire. The backflush pipe 22 passes through the annular insulating sheet 23 and enters the interior of the conductive fiber filter layer 25.

[0042] In this embodiment, for corrosive materials, a fiber material is used as the filter layer, which has high corrosion resistance. Furthermore, to prevent dust from clogging the filter pores, this embodiment employs a double-layer filter design (carbon fiber filter layer 24 and conductive fiber filter layer 25) plus a backflushing pipe 22. Specifically, the outer carbon fiber filter layer 24 has high wear resistance and conductivity. During dust removal, the impact and friction between the carbon fiber filter layer 24 and the dust particles generate static electricity in the carbon fiber filter layer 24. Since carbon fiber is a conductive material, it allows the charge to be evenly distributed on the fiber surface, forming an electrostatic field. This electrostatic field can adsorb very fine particles onto the surface of the carbon fiber filter layer 24, increasing its ability to adsorb fine particles. Furthermore, the adsorbed particles maintain their adsorption state through electrostatic force; once the static electricity is lost, the particles detach, along with any sticky particles that may be generated by a small amount of moisture on the outside of the particles. In other words, due to their small weight, the fine particles preferentially adhere to the surface of the carbon fiber filter layer 24, forming a layer of particles that can be removed through conductivity. Removing the particulate layer requires making the carbon fiber filter layer 24 conductive. Therefore, a conductive fiber filter layer 25 is provided inside it, and a backflush pipe 22 is provided inside the conductive fiber filter layer 25. The backflush pipe 22 can blow the elastic conductive fiber filter layer 25 into contact with the carbon fiber filter layer 24. On the one hand, it releases the charge accumulated in the carbon fiber filter layer 24, causing the particulate layer to detach the enriched particles from its exterior. On the other hand, the backflush pipe 22 applies airflow from the inside to the outside, which can also prevent particulate dust from clogging the carbon fiber filter layer 24.

[0043] Of course, to increase corrosion resistance, a corrosion-resistant coating can also be applied to the inner wall of the cylindrical shell 1.

[0044] In some embodiments of the present invention, the carbon fiber filter layer 24 is provided with a plurality of insulating baffles 27 distributed along its axis, the insulating baffles 27 dividing the carbon fiber filter layer 24 into a plurality of non-conductive sub-conductors along the axis, the backflush pipe 22 is connected to an air pump, the bottom of the backflush pipe 22 is sealed, the backflush pipe 22 has a plurality of air outlets distributed in a ring on the side wall near its bottom, and the backflush pipe 22 is connected to a driving device 3, the driving device 3 being used to drive the backflush pipe 22 to move up and down inside the conductive fiber filter layer 25.

[0045] In this embodiment, in order to better accumulate charge, multiple insulating baffles 27 are set to divide the carbon fiber filter layer 24 into multiple mutually insulated sub-conductors. The backflush pipe 22 moves continuously along the axis under the action of the drive device 3, and blows the conductive fiber filter layer 25 and multiple mutually insulated sub-conductors in different parts to contact and discharge in sequence under the action of the air pump, so that each sub-conductor can have enough time to generate charge.

[0046] In this embodiment, the insulating baffle 27 can be a short column, and the carbon fiber material at both ends of the carbon fiber filter layer 24 can be pasted onto the inner and outer walls of the insulating baffle 27 respectively to achieve the insulation function.

[0047] In some embodiments of the present invention, the plate 21 is provided with a plurality of nozzles around the through hole, and the nozzles apply a pulsed airflow along its axis to the carbon fiber filter layer 24 by an air pump with a pulse valve.

[0048] In this embodiment, in order to increase the efficiency of electrostatic accumulation, pulsed gas can be applied along the axis of the carbon fiber filter layer 24. The gas can increase the friction efficiency between air, dust particles and carbon fiber filter layer 24, thereby increasing the speed of electrostatic accumulation. On the other hand, it can also work with the backflush pipe 22 to remove dust from the surface of the carbon fiber filter layer 24.

[0049] In some embodiments of the present invention, the conductive fiber filter layer 25 includes a carbon fiber layer and an ePTFE membrane stacked together, wherein the carbon fiber layer is located on the side close to the carbon fiber filter layer 24.

[0050] In this embodiment, to ensure that the gas blown out by the backflush pipe 22 fully drives the conductive fiber filter layer 25 to contact the carbon fiber filter layer 24, an ePTFE membrane with excellent elasticity can be selected as the main body, and a thin layer of carbon fiber can be disposed on one side thereon. This results in a conductive fiber filter layer 25 that is both elastic and conductive. Alternatively, the ePTFE membrane can be modified to make it conductive; for example, conductive fillers such as carbon nanotubes and carbon black can be added during the preparation of the ePTFE membrane.

[0051] In some embodiments of the present invention, the gas blown out of the air outlet of the backflush pipe 22 is a dry hot gas flow.

[0052] In this embodiment, the dry hot airflow blown out by the backflush pipe 22 can provide aerodynamic force and increase the temperature near the carbon fiber filter layer 24 and the conductive fiber filter layer 25, so that the water vapor entering the dust removal device with the dust will not condense and will eventually be discharged from the dust removal device in the form of gas.

[0053] In some embodiments of the present invention, the feed inlet is connected to a pretreatment channel 4, the pretreatment channel 4 is wrapped with a cooling pipe, and cold water circulates in the cooling pipe, the temperature of the cold water being lower than that of the drying hot airflow.

[0054] In this embodiment, the pretreatment channel 4 can cool the gas entering the dust removal device, so that it encounters high temperature after entering the dust removal device. In this way, water vapor will not condense into liquid, further preventing blockage of carbon fiber filter layer 24. Specific Implementation

[0055] The rotating disk 102 has a radius of 0.5m and a rotation speed of 400~500rpm. It can separate fine powder with a particle size of less than 30μm into the innermost collection space, fine particles with a particle size of 30~150μm into the middle collection space, and coarse particles with a particle size of more than 150μm into the outermost collection space.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A discharge device for calcining block quicklime at the kiln opening, characterized in that, The system includes a sorting housing (100), with a discharge inlet (101) on top and a rotating disk (102) below the discharge inlet (101). The rotating disk (102) is connected to a motor via a rotating shaft. The bottom of the sorting housing (100) is connected to multiple cylinders (103) of different diameters. The cylinder (103) with a larger diameter is fitted over the cylinder (103) with a smaller diameter. The multiple cylinders (103) form multiple collection spaces with a vertical projection of annular or circular. The bottom of each collection space is connected to a conical hopper (200) via a pipe. The bottom of the multiple conical hoppers (200) is equipped with a collection cone for collecting materials. The collection cone includes multiple fitted conical cylinders (300). Multiple discharge spaces are formed between the multiple conical cylinders (300). The discharge ports of the conical hoppers (200) connecting different collection spaces are connected to different discharge spaces.

2. The unloading device for calcining block quicklime at the kiln opening according to claim 1, characterized in that, The bottom of each collection space is connected to multiple conical hoppers (200) via multiple pipes, and the discharge ports of the conical hoppers (200) connected to the same collection space are connected to the same discharge space.

3. The unloading device for calcining block quicklime at the kiln opening according to claim 2, characterized in that, Multiple conical hoppers (200) connected to the same feeding space are evenly distributed around the feeding space, and the feeding channels of the multiple conical hoppers (200) are spirally distributed along the outer wall of the feeding space.

4. The unloading device for calcining block quicklime at the kiln opening according to claim 1, characterized in that, The bottom of the conical hopper (200) is connected to a funnel-shaped deformable structure. The deformable structure includes a funnel-shaped deformable body (201) made of shape memory material as the fixed phase and a protective film (202) wrapped around the outside of the deformable body (201). The protective film (202) is connected to the side wall of the conical hopper (200) near the bottom. The upper end of the deformable body (201) is bonded to the bottom edge of the conical hopper (200). The deformable body (201) is connected to a resistance wire, and the resistance wire is connected to a power source.

5. The unloading device for calcining block quicklime at the kiln opening according to claim 4, characterized in that, The deformable body (201) is made of shape memory polymer material.

6. The unloading device for calcining block quicklime at the kiln opening according to claim 5, characterized in that, The shape memory polymer material is shape memory polyurethane, trans polyisoprene, or shape memory epoxy resin.

7. The unloading device for calcining block quicklime at the kiln opening according to claim 4, characterized in that, The protective film (202) is made of glass fiber, thermoplastic polyurethane elastomer or thermoplastic vulcanized rubber.

8. A discharge device for calcining block quicklime at the kiln opening according to claim 1 or 4, characterized in that, The feeding channel of the conical hopper (200) is equipped with a solenoid valve.

9. The unloading device for calcining block quicklime at the kiln opening according to claim 1, characterized in that, The bottom plate of the sorting housing (100) protrudes upward, causing the bottom of each collection space to slope outward and downward.

10. The unloading device for calcining block quicklime at the kiln opening according to claim 1, characterized in that, The collecting cone is connected to a dust removal device.

Images