Heating device for heavy calcium carbonate processing

Abstract

The utility model discloses a heating device for heavy calcium carbonate processing, which belongs to the technical field of heavy calcium carbonate processing and comprises a drying cylinder, a protruding part is arranged on the inner circumferential wall of the drying cylinder, a material storage area and a material return area are respectively formed on the upper portion and the lower portion of the drying cylinder through the protruding part, and a central circulating pipe is arranged in the center of the drying cylinder. The bottom end and the top end of the center circulating pipe are provided with notches for feeding and discharging heavy calcium carbonate correspondingly, spiral twisting and conveying pieces are arranged on the inner circumference of the center circulating pipe, the spiral twisting and conveying pieces are attached to the inner wall of the center circulating pipe and can rotationally twist and convey the heavy calcium carbonate, and the periphery of the drying cylinder is connected with a plurality of circulating side lugs. The outer side of the circulating side lug is connected with a heating shell of a heat source, and a sealing and blocking part is fixed in a gap between the material returning area and the central circulating pipe. According to the heating device for heavy calcium carbonate processing, through flowing circulation of heavy calcium carbonate, heat is conveyed in the circulation process, and uniform heating can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heavy calcium carbonate processing, in particular to a heating device for heavy calcium carbonate processing. Background Art

[0002] Heavy calcium carbonate, or heavy calcium carbonate for short, is made by grinding natural carbonate minerals such as calcite, marble, and limestone. It is a commonly used powdered inorganic filler with advantages such as high chemical purity, high inertness, resistance to chemical reactions, good thermal stability, no decomposition below 400°C, high whiteness, low oil absorption, low refractive index, softness, dryness, absence of water of crystallization, low hardness and abrasion resistance, non-toxicity, tastelessness, odorlessness, and good dispersibility. During the processing of heavy calcium carbonate, it is sometimes necessary to heat and dry the damp or on-demand heavy calcium carbonate. Existing heating and drying methods mostly rely solely on heat sources, but the heavy calcium carbonate is often fixed in place, which can lead to uneven drying of the internally accumulated parts.

[0003] Publication number CN218238234U discloses a dehydration and drying device for ultrafine ground calcium carbonate powder. The device comprises a motor, a half gear, and a tooth block. When the motor drives the half gear to rotate, the tooth block causes the entire drying tray to move along a chute. After the movement, the spring force resets the drying tray, allowing the drying tray to reciprocate left and right. This movement allows the powder in the drying chamber to move, maximizing mixing of the powder in the upper and lower portions of the drying chamber, resulting in uniform heating. However, this device, which only moves by force, has limited heating uniformity for the ground calcium carbonate, resulting in low efficiency. Therefore, a new structure is proposed for more uniform heating and drying. Utility Model Content

[0004] The purpose of the utility model is to provide a heating device for processing heavy calcium carbonate to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heating device for processing heavy calcium carbonate, comprising a drying cylinder, the inner peripheral wall of the drying cylinder is provided with a protruding part, and the protruding part forms a storage area and a return area above and below respectively, a central circulation pipe is provided in the center of the drying cylinder, and the bottom and top ends of the central circulation pipe are respectively provided with notches for entering and discharging heavy calcium carbonate, a spiral twisting piece is provided on the inner periphery of the central circulation pipe, and the spiral twisting piece is in contact with the inner wall of the central circulation pipe and can rotate and twist the heavy calcium carbonate, a plurality of circulation side ears are connected to the outer periphery of the drying cylinder, and a heating shell of a heat source is connected to the outer side of the circulation side ears, and a sealing part for forming isolation is fixed to the gap between the return area and the central circulation pipe.

[0006] In a further embodiment, a cover plate is fixed to the top of the drying cylinder by bolts, and the cover plate is connected to a feed port that passes through the sealing portion.

[0007] In a further embodiment, a rotary motor is installed at the center of the top of the cover plate, and a driving end of the rotary motor passes through the cover plate and is connected to a center rod fixed to the spiral twisting piece.

[0008] In a further embodiment, the bottom end of the central circulation pipe is fixed to the inner bottom of the drying cylinder, and the notch at the top of the central circulation pipe for discharging heavy calcium carbonate is located above the sealing portion and within the space of the return material area.

[0009] In a further embodiment, a lower ring is provided on the outer periphery of the bottom end of the central circulation pipe, and a side ring is provided on the outer periphery of the lower ring.

[0010] In a further embodiment, a heating element is installed inside the heating shell, and an exhaust fan with an air outlet facing the circulation side ear is embedded in one side of the heating element.

[0011] In a further embodiment, a dust screen is installed on the end side of the exhaust fan to prevent heavy calcium carbonate from entering the heating shell, and an air duct is connected between one side of the heating shell and the top area of ​​the inner periphery of the drying cylinder.

[0012] In a further embodiment, the two communicating ends of the circulating side ears are respectively connected to the material storage area and the material return area.

[0013] In a further embodiment, a plurality of supporting legs are installed at the bottom of the drying cylinder, and a discharge port is provided at the bottom of the drying cylinder.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are:

[0015] The central design of the central circulation pipe and the twisting effect of the spiral twisting piece inside, the isolation of the storage area from the return area through the blocking part and the upward protruding conical slope design of the blocking part, the connection between the central rod and the center of the spiral twisting piece and the rotating motor design connected to the top of the central rod, combined with the notch design at the bottom and top of the central circulation pipe, when the rotating motor is running, it can drive the spiral twisting piece to rotate, transporting the heavy calcium carbonate from low to high;

[0016] The connection design between the two ends of the circulation side ears and the storage area and the return area, as well as the heat generation effect of the internal heating element of the heating shell on the periphery of the circulation side ears, allows the twisted heavy calcium carbonate to fall into the circulation side ears through the blocking part. Then, through the automatic gravity combined with the heat and wind power delivered by the exhaust fan inside the heating shell, it can fall back to the bottom of the storage area, realizing the internal circulation of heavy calcium carbonate and achieving uniform heating and drying.

[0017] The low ring surrounds the central circulation pipe and the side ring blocks the heavy calcium carbonate that has just circulated, which can block it on the outside first, further preventing part of the material from circulating infinitely and affecting the uniform drying effect.

[0018] The heating device for processing heavy calcium carbonate can realize uniform heating by circulating the heavy calcium carbonate and transmitting heat during the circulation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a central sectional view of the present utility model;

[0022] Figure 3 This is a schematic diagram of the expanded structure of the annular component inside the drying cylinder of the present invention;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the internal structure of the heating shell of the present invention.

[0024] Description of reference numerals:

[0025] 1. Drying cylinder; 2. Cover plate; 3. Storage area; 4. Return area; 5. Central circulation pipe; 6. Spiral conveyor; 7. Central rod; 8. Rotating motor; 9. Circulation side ears; 10. Heating shell; 11. Heating element; 12. Exhaust fan; 13. Dust screen; 14. Air duct; 15. Low ring; 16. Side ring; 17. Sealing part; 18. Feed port. DETAILED DESCRIPTION

[0026] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0027] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0028] The connection method can be bonding, welding, bolt connection, etc., which shall be based on actual needs.

[0029] Most of the existing methods of drying heavy calcium carbonate are to place it in a drying area and dry it by aligning it with an external heating device. The heavy calcium carbonate is in powder form and the powders are piled up and fixed and cannot flow, so the drying of the internal piles may be uneven. If the heavy calcium carbonate has a structure that allows it to flow, combined with heating and drying, the uniformity of drying can be greatly improved. To address this problem, a new type of heavy calcium carbonate heating and drying device is designed, and the specific structure is as follows.

[0030] See also Figures 1 to 4 The heating device for processing heavy calcium carbonate includes a drying cylinder 1, a cover plate 2, a central circulation pipe 5, a spiral twisted feeding piece 6, a center rod 7 and a circulation side ear 9. A plurality of supporting legs are installed at the bottom of the drying cylinder 1. The bottom of the supporting legs is provided with a grounding screw component, which can be fixed to the ground by fasteners. The cover plate 2 is adapted to the drying cylinder 1 and is detachably fixed by bolts. The inner peripheral wall of the drying cylinder 1 is provided with a protruding part, which forms a storage area 3 and a return area 4 on the upper and lower sides respectively. The storage area 3 is used to store heavy calcium carbonate. The center rod 7 is designed to pass through the center, and the outer periphery of the center rod 7 is fixed to the spiral twisted feeding piece 6.

[0031] In order to rotate the center rod 7, a rotary motor 8 is installed at the center of the top of the cover plate 2. The driving end of the rotary motor 8 passes through the cover plate 2 and is fixed to the top of the center rod 7.

[0032] In order to achieve twisting, the outer periphery of the spiral twisting piece 6 is adapted to the inner wall of the central circulation pipe 5, and the bottom end of the central circulation pipe 5 is fixed to the inner bottom of the drying cylinder 1. The central circulation pipe 5 is sleeved on the outside of the spiral twisting piece 6. The bottom and top ends of the central circulation pipe 5 are respectively provided with notches for entering and discharging heavy calcium carbonate. The gap between the return material area 4 and the central circulation pipe 5 is fixed with a sealing portion 17 for forming isolation. The center of the sealing portion 17 is a circular opening adapted to the central circulation pipe 5. The notch for discharging heavy calcium carbonate at the top end of the central circulation pipe 5 is located above the sealing portion 17 and is located in the space of the return material area 4. Therefore, when the rotating motor 8 is running, the central rod 7 can be driven to rotate, so that the spiral twisting piece 6 rotates, and the heavy calcium carbonate can be rotated and twisted by adhering to the inner wall of the central circulation pipe 5;

[0033] In order to realize the return of materials, the blocking portion 17 is designed as an upwardly protruding conical slope. The outer periphery of the drying cylinder 1 is connected to a number of circulation side ears 9. The two connecting ends of the circulation side ears 9 are respectively connected to the storage area 3 and the return area 4. The outer side of the circulation side ears 9 is connected to a heating shell 10 for supplying heat. A heating element 11 is installed inside the heating shell 10. An exhaust fan 12 with an air outlet facing the circulation side ear 9 is embedded in one side of the heating element 11. A dust-proof screen 13 is installed on the end side of the exhaust fan 12 to prevent heavy calcium carbonate from entering the heating shell 10. An air duct 14 is connected to the top area of ​​the inner periphery of the drying cylinder 1 on one side of the heating shell 10. The air duct 14 is used to realize internal communication of the gas to avoid the generation of positive and negative pressures.

[0034] In order to facilitate feeding and discharging, a notch is provided on the outside of the blocking portion 17, the cover plate 2 is connected to a feed port 18 that passes through the notch of the blocking portion 17, and a discharge port is provided at the bottom of the drying cylinder 1 (not shown in the figure);

[0035] In order to prevent the heavy calcium carbonate that has just circulated from entering the recycling cycle immediately, a low ring 15 is provided on the outer periphery of the bottom end of the central circulation pipe 5, and a side ring 16 is provided on the outer periphery of the low ring 15. The side ring 16 and the low ring 15 form a blocking ring for the heavy calcium carbonate, which can block the heavy calcium carbonate that has just circulated on the outside first. When the heavy calcium carbonate in the center enters the circulation, space is gradually generated in the central area, and the separation drive of the exhaust fan 12 is used to move it to the center. In this way, the heavy calcium carbonate can be evenly circulated internally.

[0036] The above components and electrical equipment are all existing technologies or existing feasible technologies. Their working principles, sizes and models are irrelevant to the functions of this application, so they will not be described in detail. They are all controlled by remote control switches.

[0037] How it works

[0038] When the heavy calcium carbonate processing heating device is needed, the heavy calcium carbonate is input through the feed port 18. After the input is completed, the rotating motor 8 is started to drive the central rod 7 to rotate, so that the spiral twisting piece 6 rotates, so that the heavy calcium carbonate inside is twisted and sent upward;

[0039] After the heavy calcium carbonate is twisted and sent to the top, it falls to the top of the blocking part 17 through the gap at the upper end. The cone slope design makes it fall to the side and further enter the circulation side ear 9;

[0040] At the same time, the heating element 11 and the exhaust fan 12 are running, and the exhaust fan 12 blows the generated heat to the heavy calcium carbonate inside the circulation side ear 9, while transporting the heat and assisting the transportation of the heavy calcium carbonate, so that it falls into the interior of the storage area 3, thereby realizing internal circulation flow and uniform heating.

[0041] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating device for processing heavy calcium carbonate, comprising a drying cylinder (1), wherein the inner peripheral wall of the drying cylinder (1) is provided with a protruding portion, wherein the protruding portion forms a material storage area (3) and a material return area (4) on the upper and lower sides thereof respectively; Its characteristics are: A central circulation pipe (5) is provided at the center of the drying cylinder (1), and notches for entering and discharging heavy calcium carbonate are provided at the bottom and top ends of the central circulation pipe (5), respectively. A spiral twisting piece (6) is provided on the inner periphery of the central circulation pipe (5), and the spiral twisting piece (6) is in contact with the inner wall of the central circulation pipe (5) and can rotate and twist the heavy calcium carbonate. A plurality of circulation side ears (9) are connected to the outer periphery of the drying cylinder (1), and a heating shell (10) for supplying heat is connected to the outer side of the circulation side ears (9). A sealing portion (17) for forming isolation is fixed in the gap between the return material area (4) and the central circulation pipe (5).

2. The heating device for processing heavy calcium carbonate according to claim 1, characterized in that: A cover plate (2) is fixed to the top of the drying cylinder (1) by bolts, and the cover plate (2) is connected to a feed port (18) that passes through the sealing portion (17).

3. The heating device for processing heavy calcium carbonate according to claim 2, characterized in that: A rotating motor (8) is installed at the center of the top of the cover plate (2), and the driving end of the rotating motor (8) passes through the cover plate (2) and is connected to a center rod (7) fixed to the spiral twisting piece (6).

4. The heating device for processing heavy calcium carbonate according to claim 1, characterized in that: The bottom end of the central circulation pipe (5) is fixed to the inner bottom of the drying cylinder (1), and the notch at the top end of the central circulation pipe (5) for discharging heavy calcium carbonate is located above the blocking portion (17) and within the space of the material return area (4).

5. The heating device for processing heavy calcium carbonate according to claim 4, characterized in that: A low ring (15) is provided on the outer periphery of the bottom end of the central circulation pipe (5), and a side ring (16) is provided on the outer periphery of the low ring (15).

6. The heating device for processing heavy calcium carbonate according to claim 1, characterized in that: A heating element (11) is installed inside the heating shell (10), and an exhaust fan (12) with an air outlet facing the circulation side ear (9) is embedded in one side of the heating element (11).

7. The heating device for processing heavy calcium carbonate according to claim 6, characterized in that: A dust screen (13) is installed on the end side of the exhaust fan (12) to prevent heavy calcium carbonate from entering the heating shell (10), and an air duct (14) is connected between one side of the heating shell (10) and the top area of ​​the inner periphery of the drying cylinder (1).

8. The heating device for processing heavy calcium carbonate according to claim 1, characterized in that: The two communicating ends of the circulating side ears (9) are respectively communicated with the material storage area (3) and the material return area (4).

9. The heating device for processing ground calcium carbonate according to any one of claims 1 to 8, characterized in that: A plurality of supporting legs are installed at the bottom of the drying cylinder (1), and a discharge port is provided at the bottom of the drying cylinder (1).

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