Raw material drying device for silicone sealant production

Abstract

The utility model discloses a raw material drying device for silicone sealant production belongs to silicone sealant production equipment field, this device includes drying box, the inside of drying box is funnel -shaped, be equipped with feed port, discharge gate, air inlet and exhaust port on drying box, still be equipped with stirring subassembly in drying box, stirring subassembly includes stirring shaft, propeller blade, fixed link and scrape wall spare, through the inner ring fixed in stirring shaft of propeller blade, the outer ring is pasted drying box inner wall, can both turn over and stir internal raw material, can prevent side wall accumulation again, fixed link transverse section adapts funnel inner wall and connects stirring shaft bottom, scrape wall spare pastes inner wall, real -time scraping and removing adhered raw material, avoid bottom stagnation, solved the raw material that funnel -shaped drying device easily appears and sticks wall, local accumulation problem, make all raw materials can be fully turned over and stirred and participate in drying process, effectively avoided the drying of partial raw material because of stagnation leads to insufficiency, guaranteeed the drying quality consistency of silicone sealant raw material.

Description

Technical Field

[0001] This utility model relates to the field of silicone sealant production equipment, and in particular to a raw material drying device for silicone sealant production. Background Technology

[0002] The raw material drying device for silicone sealant production is a key auxiliary equipment in the silicone sealant production process. It is mainly used to dry solid raw materials such as calcium carbonate and silica. By removing the moisture contained in the raw materials, it provides raw materials that meet the quality requirements for subsequent sealant mixing, molding and other processes, ensuring the bonding performance, curing effect and storage stability of silicone sealant products.

[0003] Existing drying equipment for raw materials used in the production of silicone sealants generally consists of a cylindrical or simple funnel-shaped drying chamber, a conventional stirring shaft and bladed stirring paddles, and inlet and outlet air ducts. During operation, the raw materials are first put into the chamber, and the stirring shaft drives the blades to rotate, thereby agitating the raw materials. Then, hot air is introduced into the drying chamber through the inlet air duct, causing the hot air to rise linearly along the axial direction of the chamber and finally be discharged from the outlet air duct. During the rising process of the hot air, heat exchange occurs with the agitated raw materials, thereby removing the moisture from the raw materials and achieving the drying of the raw materials. However, some shortcomings can be deduced from this structure and operation process: First, after the raw materials containing moisture are put into the drying box, some of the raw materials are still in lumps and have a certain degree of adhesion. Traditional settings often only use a single stirring paddle to stir, which is difficult to adhere to the walls and bottom of the box and is not easy to scrape off the adhered raw materials. Over time, the raw materials are easy to adhere and accumulate. Second, the hot air flow path is generally a straight upward movement with a short residence time, resulting in insufficient contact with the raw materials. This may lead to some raw materials not having sufficient contact with the hot air, resulting in uneven drying, which in turn affects the output of raw materials and ultimately the product's performance. Utility Model Content

[0004] This utility model provides a raw material drying device for silicone sealant production, which can solve the problem of insufficient drying caused by raw material retention in existing raw material drying devices for silicone sealant production.

[0005] A raw material drying device for silicone sealant production includes a drying box with a funnel-shaped interior. The drying box is equipped with a feed inlet, a discharge outlet, an air inlet, and an air outlet. The drying box also includes a stirring assembly, which includes a stirring shaft, a propeller blade, a fixed rod, and a wall scraper. The stirring shaft is located inside the drying chamber along the height direction and is coaxial with the drying chamber. The propeller blades are arranged along the stirring shaft, with their inner ring fixedly connected to the outer surface of the stirring shaft and their outer ring fitting against the inner wall of the drying oven. The fixing rod is L-shaped and has several of them. Its horizontal section is parallel to the inner wall of the funnel of the drying box and is fixedly connected to the bottom of the stirring shaft. The wall scraper is provided in several parts and is fixedly installed on the vertical section of the fixed rod along the stirring shaft direction, and is in contact with the inner wall of the drying oven.

[0006] Preferably, the inner wall of the drying chamber is also provided with a fan-shaped air guide ring, and a plurality of fan-shaped air guide rings are provided and evenly distributed along the circumference of the stirring shaft. A plurality of inclined air guide holes are opened on the fan-shaped air guide rings, and the inclined direction of the inclined air guide holes is towards the stirring shaft.

[0007] Preferably, the upper surface of the drying oven is further provided with a drive assembly, which is connected to the stirring shaft.

[0008] Preferably, the drive assembly includes a mounting bracket, a drive motor, and a coupling; The mounting bracket is fixedly installed on the upper surface of the drying oven; The drive motor is fixedly mounted on the mounting bracket along the height direction of the drying box by bolts, and its output end faces the stirring shaft; The two ends of the coupling are fixedly connected to the end of the stirring shaft and the output end of the drive motor, respectively. The drive motor, coupling, and stirring shaft are on the same axis.

[0009] Preferably, both the air inlet and the air outlet are connected to air guide pipes, and the air guide pipes are L-shaped in general, with their vertical sections connected to the interior of the drying chamber.

[0010] Preferably, a filter screen is provided in the transverse section of the air duct at the exhaust port, and the filter screen is connected to the air duct via a flange.

[0011] Preferably, the fixing rods are evenly distributed along the circumference of the stirring shaft, and the included angles between adjacent fixing rods are equal.

[0012] Preferably, the outer surface of the wall scraper is in contact with the inner wall of the drying oven, and the wall scrapers are arranged at equal intervals along the length of the vertical section of the fixed rod.

[0013] Preferably, the end face of the fan-shaped air guide ring is perpendicular to the height direction of the drying chamber.

[0014] Preferably, the propeller blades are arranged at equal intervals along the axial direction of the stirring shaft, and the helical direction of the propeller blades is adapted to the rotational direction of the stirring shaft.

[0015] The beneficial effects of this utility model are as follows: First, by fixing the inner ring of the propeller blade to the stirring shaft and the outer ring adhering to the inner wall of the drying chamber, the internal raw materials can be stirred and the accumulation on the side walls can be prevented. The horizontal section of the fixing rod is adapted to the inner wall of the funnel and connected to the bottom of the stirring shaft, while the wall scraper installed on the vertical section is attached to the inner wall, which can scrape off the adhering raw materials in real time and avoid the bottom stagnation. This solves the problem of raw materials sticking to the wall and local accumulation that is easy to occur in funnel-shaped drying devices, so that all raw materials can be fully stirred and participate in the drying process, effectively avoiding insufficient drying caused by local raw materials stagnation, and ensuring the consistency of the drying quality of silicone sealant raw materials. Furthermore, the airflow guidance between the fan-shaped air guide ring and the air guide pipe alters the trajectory of the hot air within the device. The air guide pipe at the air inlet smoothly guides the hot air into the drying chamber, preventing direct impact on the raw materials and the resulting dust. As the hot air flows upward, it is blocked by the fan-shaped air guide ring on the inner wall of the drying chamber and diffuses evenly towards the central area through the air guide holes inclined towards the stirring shaft. This allows the hot airflow to form sufficient convective contact with the raw materials being stirred by the stirring components, significantly improving heat exchange efficiency. At the same time, the end face of the fan-shaped air guide ring is perpendicular to the height direction of the drying chamber, ensuring uniform hot air diffusion. Combined with the smooth exhaust of the air guide pipe at the exhaust port, this reduces wind resistance loss and intercepts dust through the filter screen, achieving the dual effects of efficient drying and clean emissions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the raw material drying device for the production of this silicone sealant. Figure 2 This is a side view of the raw material drying apparatus for the production of this silicone sealant; Figure 3 for Figure 2 A sectional view along the cutting line AA.

[0017] Explanation of reference numerals in the attached figures: 1. Drying oven; 2. Feed inlet; 3. Discharge outlet; 4. Air inlet; 5. Air outlet; 6. Stirring assembly; 61. Stirring shaft; 62. Propeller blade; 63. Fixing rod; 64. Wall scraper; 7. Fan-shaped air guide ring; 71. Inclined air guide hole; 8. Drive assembly; 81. Mounting bracket; 82. Drive motor; 83. Coupling; 9. Air duct; 10. Filter screen. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 1 to 3As shown in the figure, the present invention provides a raw material drying device for silicone sealant production, including a drying box 1. The inside of the drying box 1 is funnel-shaped. The drying box 1 is provided with a feed inlet 2, a discharge outlet 3, an air inlet 4 and an air outlet 5. The drying box 1 is also provided with a stirring assembly 6, which includes a stirring shaft 61, a propeller blade 62, a fixing rod 63 and a wall scraper 64. The stirring shaft 61 is located inside the drying chamber 1 along the height direction of the drying chamber 1 and is coaxial with the drying chamber 1; The propeller blades 62 are arranged along the stirring shaft 61, with their inner ring fixedly connected to the outer surface of the stirring shaft 61 and their outer ring fitting against the inner wall of the drying oven 1. The fixing rod 63 is L-shaped and has several of them. Its horizontal section is parallel to the inner wall of the funnel of the drying box 1 and is fixedly connected to the bottom of the stirring shaft 61. The wall scraper 64 is provided in several parts and is fixedly installed on the vertical section of the fixed rod 63 along the direction of the stirring shaft 61, and is in contact with the inner wall of the drying box 1.

[0020] The stirring shaft 61 is coaxially set with the drying chamber 1, which can ensure the stability of the stirring component 6 during rotation and avoid uneven stirring caused by eccentricity. The propeller blade 62 is fixed to the stirring shaft 61 through the inner ring and the outer ring is attached to the inner wall of the drying chamber 1. This connection method ensures the structural strength during rotation and can fully stir the raw materials near the inner wall of the drying chamber 1, preventing the raw materials from accumulating on the side wall. The horizontal section of the L-shaped fixing rod 63 is parallel to the inner wall of the funnel and connected to the bottom of the stirring shaft 61, which can be adapted to the funnel-shaped structure of the drying chamber 1. The vertical section is equipped with the wall scraper 64 and is attached to the inner wall, which solves the problem of easy sticking and accumulation of raw materials at the bottom and side walls of the funnel-shaped drying chamber 1. The stirring shaft 61 drives the fixing rod 63 and the wall scraper 64 to rotate. The wall scraper 64 can scrape off the raw materials adhering to the inner wall in real time. The propeller blade 62 simultaneously stirs the internal raw materials. The two work together to ensure that all raw materials can participate in the drying process and avoid insufficient drying due to local raw material retention.

[0021] The inner wall of the drying chamber 1 is also provided with a fan-shaped air guide ring 7. Several fan-shaped air guide rings 7 are provided and are evenly distributed around the stirring shaft 61. Several inclined air guide holes 71 are opened on the fan-shaped air guide ring 7, and the inclined direction of the inclined air guide holes 71 is towards the stirring shaft 61.

[0022] The fan-shaped air guide ring 7 is evenly distributed around the stirring shaft 61, which can make the hot air evenly distributed in the drying chamber 1 and avoid local air volume concentration. The inclined air guide hole 71 is inclined towards the stirring shaft 61 to solve the problem that the hot air tends to rise in a straight line along the inner wall and does not make sufficient contact with the raw materials. The air guide hole 71 forces the hot air flow direction to be changed, so that the hot air diffuses to the central area of ​​the drying chamber 1 and makes full contact with the raw materials stirred by the stirring component 6, thereby improving the heat exchange effect. At the same time, the fan-shaped structure will not excessively block the falling of the raw materials, ensuring the continuity of the drying process.

[0023] The upper surface of the drying oven 1 is also provided with a drive assembly 8, which is connected to the stirring shaft 61.

[0024] The drive assembly 8 is directly connected to the stirring shaft 61, providing stable rotational power to the stirring assembly 6, avoiding loss or deviation during power transmission, and ensuring that the stirring shaft 61 can drive the propeller blade 62, the fixed rod 63 and the wall scraper 64 to rotate continuously and stably, meeting the needs of continuous stirring and drying of raw materials. At the same time, the drive assembly 8 is located on the upper surface of the drying chamber 1, which does not occupy the internal space of the drying chamber 1 and is also convenient for subsequent maintenance.

[0025] The drive assembly 8 includes a mounting bracket 81, a drive motor 82, and a coupling 83; The mounting bracket 81 is fixedly installed on the upper surface of the drying oven 1; The drive motor 82 is fixedly mounted on the mounting bracket 81 along the height direction of the drying box 1 by bolts, and its output end faces the stirring shaft 61; The two ends of the coupling 83 are fixedly connected to the end of the stirring shaft 61 and the output end of the drive motor 82, respectively. The drive motor 82, coupling 83, and stirring shaft 61 are coaxial.

[0026] Mounting bracket 81 is fixed to the upper surface of drying chamber 1, providing a stable mounting base for drive motor 82 and preventing vibration generated during motor operation from affecting the sealing of drying chamber 1. Drive motor 82 is fixed with bolts and its output end faces stirring shaft 61. It is connected to stirring shaft 61 with coupling 83 to ensure the accuracy of power transmission. The coaxial design of the three components reduces eccentric torque during rotation, reduces operating noise and wear, extends the service life of drive component 8 and stirring component 6, ensures stable stirring speed, and improves the consistency of drying effect.

[0027] Both the air inlet 4 and the air outlet 5 are connected to air guide pipes 9. The air guide pipes 9 are L-shaped in general, and their vertical sections are connected to the interior of the drying chamber 1.

[0028] The air inlet 4 and the air outlet 5 are connected to L-shaped air guide pipes 9, and the vertical section connects to the inside of the drying chamber 1. This is to guide the direction of air flow. The L-shaped air guide pipe 9 at the air inlet can prevent hot air from directly impacting the raw materials and causing dust to fly, so that the hot air enters the drying chamber 1 smoothly. The L-shaped air guide pipe 9 at the air outlet can guide the humid air to be discharged smoothly and reduce wind resistance. At the same time, the L-shaped structure can reduce the entry of external impurities into the drying chamber 1 through the air inlet or the air outlet, ensuring the cleanliness of the raw material drying environment.

[0029] A filter screen 10 is provided in the horizontal section of the air duct 9 at the exhaust port 5, and the filter screen 10 is connected to the air duct 9 through a flange.

[0030] A filter screen 10 is installed in the horizontal section of the air duct 9 at the exhaust port 5 to solve the problem of raw material dust overflowing with the humid air during the drying process. The filter screen 10 can effectively intercept dust and avoid environmental pollution and raw material waste. The filter screen 10 is fixed by flange connection, which makes it easy to disassemble and clean the dust attached to the filter screen 10, ensuring smooth exhaust. At the same time, the flange connection has good sealing performance and can prevent unfiltered air from leaking from the connection.

[0031] The fixing rods 63 are evenly distributed along the circumference of the stirring shaft 61, and the included angles between adjacent fixing rods 63 are equal.

[0032] The fixed rods 63 are evenly distributed around the stirring shaft 61 with equal included angles between adjacent rods. This ensures that when the stirring shaft 61 rotates, the scraping force of each fixed rod 63 and the wall scraper 64 on the inner wall of the drying chamber 1 is evenly distributed, preventing the accumulation of raw materials or wear of the equipment in local areas due to insufficient scraping or excessive force. At the same time, the evenly distributed fixed rods 63 can drive the surrounding raw materials to be evenly stirred, further improving the uniformity of stirring and drying.

[0033] The outer surface of the scraper 64 is in contact with the inner wall of the drying oven 1, and the scraper 64 is arranged at equal intervals along the length of the vertical section of the fixed rod 63.

[0034] The outer surface of the scraper 64 is in contact with the inner wall of the drying chamber 1 to ensure the effective removal of raw materials adhering to the inner wall and to avoid raw material residue due to excessive gaps. The scraper 64 is arranged at equal intervals along the vertical section of the fixing rod 63 to cover the inner wall area corresponding to the fixing rod 63, so as to avoid long-term adhesion of raw materials in some areas due to the absence of scraper 64. At the same time, the equal interval design can make the scraping process more stable and reduce local impact on the inner wall of the drying chamber 1.

[0035] The end face of the fan-shaped air guide ring 7 is perpendicular to the height direction of the drying box 1.

[0036] The end face of the fan-shaped air guide ring 7 is perpendicular to the height direction of the drying chamber 1, ensuring that the tilt angle of each inclined air guide hole 71 is consistent. This allows the hot air to form a uniform diffused airflow after passing through the air guide hole 71, preventing the local hot air direction from shifting due to the tilt of the end face of the air guide ring. This ensures that the hot air distribution in each area of ​​the drying chamber 1 is uniform, improving the overall heat exchange efficiency. At the same time, the vertical end face design also facilitates the fixed installation of the fan-shaped air guide ring 7 and the inner wall of the drying chamber 1, ensuring connection stability.

[0037] The propeller blades 62 are arranged at equal intervals along the axial direction of the stirring shaft 61, and the helical direction of the propeller blades 62 is adapted to the rotation direction of the stirring shaft 61.

[0038] The propeller blades 62 are arranged at equal intervals along the axial direction of the stirring shaft 61 to stir the raw materials at different heights in the drying chamber 1 in layers, so as to avoid the upper layer of raw materials being insufficiently dried due to lack of stirring. The direction of the propeller is matched with the rotation direction of the stirring shaft 61, and a downward thrust is generated during the stirring process, which pushes the upper layer of raw materials to fall slowly. Combined with the funnel-shaped structure of the drying chamber 1, the raw materials form a continuous flow path from the feed inlet 2 to the discharge outlet 3, avoiding the accumulation of raw materials at a certain height and realizing continuous drying operation.

[0039] In summary, the working principle of the silicone sealant production raw material drying device provided by this utility model embodiment is as follows: First, the silicone sealant raw material to be dried is put into the funnel-shaped drying chamber 1 through the feed inlet 2. Then, the drive motor 82 is started, and the stirring shaft 61 is driven to rotate stably through the coupling 83. When the stirring shaft 61 rotates, the propeller blades 62 rotate synchronously. On the one hand, the raw materials at different heights are layered and stirred, and on the other hand, a downward thrust is generated to push the upper layer of raw materials to fall down gradually. At the same time, the outer ring of the propeller blades 62 is attached to the inner wall of the drying chamber 1 to prevent the raw materials from accumulating on the side walls. The wall scraper 64 on the fixing rod 63 at the bottom of the stirring shaft 61 is attached to the inner wall of the drying chamber 1 to scrape off the adhering raw materials in real time and prevent the raw materials from being retained at the bottom and side walls. At the same time, hot air is introduced through the air inlet. The air duct 9 at outlet 4 smoothly guides the air into the drying chamber 1, avoiding direct impact on the raw materials and preventing dust from flying. When the hot air flows upward, it is blocked by the fan-shaped air guide ring 7 in the middle of the inner wall of the drying chamber 1. It diffuses evenly to the central area through the air guide hole 71 inclined towards the stirring shaft 61, and fully contacts the raw materials stirred by the stirring component 6 to achieve heat exchange, removing the moisture from the raw materials. After heat exchange, the humid air rises along the drying chamber 1 and is discharged through the air duct 9 at the exhaust outlet 5. The filter screen 10 in the horizontal section intercepts the raw material dust carried out by the airflow, avoiding waste and environmental pollution. Under the thrust of the propeller blade 62 and the guidance of the funnel-shaped structure of the drying chamber 1, the dried raw materials continue to flow to the bottom along the inner wall and are finally discharged from the discharge port 3, realizing continuous and uniform drying of the raw materials.

[0040] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A raw material drying device for silicone sealant production, comprising a drying chamber (1), the interior of which is funnel-shaped, and the drying chamber (1) is provided with a feed inlet (2), a discharge outlet (3), an air inlet (4), and an air outlet (5), and the drying chamber (1) is further provided with a stirring assembly (6), characterized in that: The stirring assembly (6) includes a stirring shaft (61), a propeller blade (62), a fixed rod (63), and a wall scraper (64). The stirring shaft (61) is located inside the drying box (1) along the height direction of the drying box (1) and is coaxial with the drying box (1); The propeller blades (62) are arranged along the stirring shaft (61), with their inner rings fixedly connected to the outer surface of the stirring shaft (61) and their outer rings fitting against the inner wall of the drying oven (1). The fixing rod (63) is L-shaped and has several of them. Its horizontal section is parallel to the inner wall of the funnel of the drying box (1) and is fixedly connected to the bottom of the stirring shaft (61). The scraper (64) is provided in several parts and is fixedly installed on the vertical section of the fixed rod (63) along the direction of the stirring shaft (61) and is in contact with the inner wall of the drying box (1).

2. The raw material drying device for silicone sealant production according to claim 1, characterized in that: The inner wall of the drying box (1) is also provided with a fan-shaped air guide ring (7). The fan-shaped air guide ring (7) is provided in several ways and is evenly distributed around the stirring shaft (61). The fan-shaped air guide ring (7) is provided with several inclined air guide holes (71), and the inclined direction of the inclined air guide holes (71) is towards the stirring shaft (61).

3. The raw material drying device for silicone sealant production according to claim 1, characterized in that: The upper surface of the drying oven (1) is also provided with a drive assembly (8), which is connected to the stirring shaft (61).

4. The raw material drying device for silicone sealant production according to claim 3, characterized in that: The drive assembly (8) includes a mounting bracket (81), a drive motor (82), and a coupling (83); The mounting bracket (81) is fixedly installed on the upper surface of the drying oven (1); The drive motor (82) is fixedly mounted on the mounting bracket (81) along the height direction of the drying box (1) by bolts, and its output end faces the stirring shaft (61). The two ends of the coupling (83) are fixedly connected to the end of the stirring shaft (61) and the output end of the drive motor (82), respectively. The drive motor (82), coupling (83) and stirring shaft (61) are coaxial.

5. The raw material drying device for silicone sealant production according to claim 1, characterized in that: Both the air inlet (4) and the air outlet (5) are connected to air guide pipes (9). The air guide pipes (9) are L-shaped in general, and their vertical sections are connected to the interior of the drying box (1).

6. The raw material drying device for silicone sealant production according to claim 5, characterized in that: A filter screen (10) is provided in the transverse section of the air duct (9) at the exhaust port (5), and the filter screen (10) is connected to the air duct (9) by a flange.

7. The raw material drying device for silicone sealant production according to claim 1, characterized in that: The fixing rods (63) are evenly distributed along the circumference of the stirring shaft (61), and the included angles between adjacent fixing rods (63) are equal.

8. The raw material drying device for silicone sealant production according to claim 1, characterized in that: The outer surface of the scraper (64) is in contact with the inner wall of the drying oven (1), and the scraper (64) is arranged at equal intervals along the length of the vertical section of the fixed rod (63).

9. A raw material drying device for silicone sealant production according to claim 2, characterized in that: The end face of the fan-shaped air guide ring (7) is perpendicular to the height direction of the drying box (1).

10. A raw material drying device for silicone sealant production according to claim 1, characterized in that: The propeller blades (62) are arranged at equal intervals along the axial direction of the stirring shaft (61), and the spiral direction of the propeller blades (62) is adapted to the rotation direction of the stirring shaft (61).

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