Slaked lime feeding device

Abstract

The utility model relates to the technical field of slaked lime feeding, and discloses a slaked lime feeding device which comprises a damp-proof storage bin, the top of the damp-proof storage bin is connected with an elevator through a feeding pipe, and the bottom of the damp-proof storage bin is connected with a feeding port of a feeding conveying mechanism. A discharging port of the feeding conveying mechanism is connected with a feeding port of the slurry tank, the damp-proof storage bin is of a double-layer stainless steel structure, a drying agent is filled in an interlayer of the double-layer stainless steel structure, moisture absorption ports are evenly distributed in an inner-layer stainless steel plate of the damp-proof storage bin, and moisture discharging ports are evenly distributed in an outer-layer stainless steel plate of the damp-proof storage bin. Filter screens are arranged at the moisture absorbing opening and the moisture discharging opening, and an electric heating wire is embedded in the drying agent. The slaked lime feeding device effectively solves the problems of uneven feeding, dust pollution, low automation degree and the like, ensures that slaked lime is uniformly dispersed and dust is reduced by optimizing the structures of the spiral blade and the conveying auger and additionally arranging the feeding dispersing mechanism, and is high in automation level and high in production efficiency.

Description

Technical Field

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

[0002] In papermaking, hydrated lime (calcium hydroxide) is mainly used to adjust the pH value of the pulp, neutralize acidic substances, and serve as a filler. Current technologies often face the following problems when feeding hydrated lime: 1. Uneven feeding: Hydrated lime is prone to caking after absorbing moisture or standing for a long time. Traditional screw conveyors have poor dispersion effects, and uneven feeding is easily caused by clumping or blockage at the discharge port, resulting in poor mixing with the pulp and affecting paper quality; 2. Dust pollution: A large amount of dust is generated during the feeding process, polluting the workshop environment and harming workers' health; 3. Low automation: Manual operation is cumbersome and inefficient, making it difficult to meet the needs of modern production.

[0003] The utility model patent with authorization announcement number CN214160844U discloses a quicklime feeding device for a medical waste neutralization reaction tower. Although it proposes a vibration anti-clogging structure, it does not consider the humidity environment of the papermaking process, which leads to problems such as blockage or uneven feeding caused by the quicklime becoming damp and hardened in practical applications. Utility Model Content

[0004] The purpose of this utility model is to provide a quicklime feeding device that effectively solves problems such as uneven feeding, dust pollution and low automation. By optimizing the spiral blades and conveying auger structure and adding a feeding dispersion mechanism, the quicklime is ensured to be evenly dispersed, dust is reduced, and the automation level and production efficiency are high.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A quicklime feeding device includes a moisture-proof storage silo. The top of the moisture-proof storage silo is connected to a hoist via a feed pipe. The bottom of the moisture-proof storage silo is connected to the feed inlet of a feeding conveying mechanism. The discharge outlet of the feeding conveying mechanism is connected to the feed outlet of a slurry tank. The moisture-proof storage silo has a double-layer stainless steel structure, with a desiccant filling the double-layer stainless steel interlayer. Moisture-absorbing ports are evenly distributed on the inner stainless steel plate of the moisture-proof storage silo, and moisture-discharging ports are evenly distributed on the outer stainless steel plate of the moisture-proof storage silo. Filter screens are provided at both the moisture-absorbing ports and the moisture-discharging ports. Heating wires are embedded in the desiccant.

[0007] By adopting the above technical solution, the moisture-proof storage silo utilizes the moisture absorption of the desiccant and the heating effect of the electric heating wire to continuously dry the slaked lime stored in the silo. This effectively prevents the slaked lime from becoming damp and caking, ensuring that the feeding and conveying mechanism can feed the material evenly. Furthermore, the filter design at the moisture absorption and exhaust ports effectively filters dust while ensuring the moisture-proof effect, significantly reducing dust pollution in the workshop environment, greatly improving workshop air quality, and enhancing the workshop's working environment. In addition, the heating temperature of the electric heating wire built into the desiccant can be adjusted according to the actual environment to ensure the optimal drying effect of the desiccant on the slaked lime in the moisture-proof storage silo. This improves the efficiency of automated feeding, reduces the intensity of manual operation, meets the high-efficiency and environmentally friendly requirements of modern papermaking production, and achieves continuous and stable papermaking quality assurance.

[0008] A further feature of this invention is that: a turning mechanism is provided at the center of the moisture-proof storage silo, the turning mechanism includes a drive shaft, the upper end of the drive shaft is connected to a drive motor fixed to the top of the moisture-proof storage silo, the lower end of the drive shaft penetrates the top wall of the moisture-proof storage silo and extends into the moisture-proof storage silo and extends to the bottom of the moisture-proof storage silo, and the drive shaft is provided with spiral blades on the outer wall of the inner part of the moisture-proof storage silo.

[0009] By adopting the above technical solution, the material turning mechanism drives the drive shaft to rotate via a drive motor. The rotation of the drive shaft drives the spiral blades to rotate. When the spiral blades rotate, they cause the quicklime in the moisture-proof storage bin to be turned evenly, which further promotes the desiccant to fully absorb moisture from the quicklime in the moisture-proof storage bin, avoids local dampness and caking, and ensures that the quicklime is dried evenly as a whole. This ensures the uniformity of material feeding, improves the overall operational stability of the device, and meets the high standard requirements of the papermaking process.

[0010] A further feature of this invention is that the feeding and conveying mechanism includes a conveying cylinder arranged horizontally in the axial direction, the conveying cylinder is provided with a conveying auger coaxial with it, the inlet and outlet are respectively provided on the conveying cylinder, and one end of the conveying auger is connected to a conveying drive motor.

[0011] By adopting the above technical solution, the quicklime in the moisture-proof storage silo enters the conveying cylinder of the feeding and conveying mechanism through the inlet. The conveying auger rotates under the drive of the conveying drive motor, evenly pushing the quicklime into the conveying cylinder to the outlet and then discharging it into the pulp tank. The whole process is automatic and requires no manual operation, which greatly improves the automation level of papermaking technology. Moreover, the quicklime is in a sealed environment during the feeding process, which not only effectively prevents external moisture from entering and ensures that the quicklime remains dry during the conveying and feeding process, but also avoids dust overflow, further optimizing the workshop environment, improving production efficiency and product quality, and meeting the dual needs of the modern papermaking industry for environmental protection and high efficiency.

[0012] A further feature of this invention is that multiple protrusions are evenly distributed on both sides of the spiral blades and the blades of the conveying auger.

[0013] By adopting the above technical solution, the protruding design effectively increases the contact area between the blades and the slaked lime. At the same time, it can also collide and rub against the slaked lime during rotation, which effectively improves the dispersion effect of the slaked lime, further optimizes the drying and feeding effect, and thus further ensures the stability of the paper production line and the product quality.

[0014] A further feature of this invention is that a feeding and dispersing mechanism is provided at the connection between the discharge port and the slurry tank of the feeding and conveying mechanism, and the feeding and dispersing mechanism includes a dispersing screen plate fixed on the inner wall of the discharge port.

[0015] By adopting the above technical solution, the dispersing screen plate further improves the dispersion of hydrated lime, ensuring its uniform distribution in the pulp tank, avoiding the problem of uneven pulp caused by excessively high local concentration, improving the uniformity and stability of paper pulp, further ensuring paper quality, and meeting the strict requirements of high-end papermaking processes.

[0016] A further feature of this invention is that a rotating shaft is provided at the center of the dispersing sieve plate, the lower end of the rotating shaft is connected to a dispersing motor fixed at the bottom of the dispersing sieve plate, and multiple dispersing scrapers are circumferentially fixed at the upper end of the rotating shaft.

[0017] By adopting the above technical solution, the dispersing motor drives the rotating shaft to rotate, and the rotating shaft drives each dispersing scraper to rotate synchronously. During the rotation, the dispersing scrapers continuously strike and agitate the hydrated lime falling on the dispersing screen plate, which not only further enhances the dispersion effect of the hydrated lime, but also further promotes the hydrated lime to fall from the screen holes of the dispersing screen plate, ensuring that the hydrated lime enters the pulp tank evenly, avoiding accumulation and blockage, improving feeding efficiency, further ensuring the continuity and stability of the papermaking process, and meeting the requirements of high-end papermaking technology for precise control.

[0018] A further feature of this invention is that the dispersing scraper is comb-shaped, and the bottom of the dispersing sieve plate is in contact with the upper surface of the dispersing sieve plate.

[0019] By adopting the above technical solution, the comb-shaped scraper design can promote the uniform distribution of hydrated lime on the dispersing screen plate, allowing the hydrated lime to pass through the screen holes more smoothly, reducing the risk of accumulation and blockage. At the same time, the close contact between the comb-shaped scraper and the bottom of the screen plate can also clean the surface of the screen plate, prevent screen hole blockage, ensure the long-term efficient operation of the screen plate, and further improve the stability and durability of the feeding system.

[0020] A further feature of this invention is that the dispersing motor is provided with a protective cover, which is fixed to the bottom of the dispersing sieve plate.

[0021] By adopting the above technical solutions, the protective cover effectively prevents quicklime dust from entering the motor, extends the motor's service life, ensures operational safety, further improves the overall operational stability and reliability of the equipment, and ensures the continuous and efficient operation of the paper production line.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model utilizes the moisture-proof storage silo to continuously dry the slaked lime stored within, thanks to the moisture absorption of the desiccant and the heating effect of the electric heating wire. This effectively prevents the slaked lime from becoming damp and caking, ensuring uniform feeding by the feeding and conveying mechanism. Furthermore, the filter design at the moisture absorption and exhaust ports effectively filters dust while maintaining moisture protection, significantly reducing dust pollution in the workshop environment, greatly improving air quality, and enhancing the working environment for workers. In addition, the heating temperature of the electric heating wire built into the desiccant can be adjusted according to the actual environment, ensuring optimal drying of the slaked lime in the moisture-proof storage silo. This improves automated feeding efficiency, reduces manual labor intensity, meets the high-efficiency and environmentally friendly requirements of modern papermaking production, and achieves continuous and stable papermaking quality assurance.

[0024] 2. In this utility model, the material turning mechanism inside the moisture-proof storage silo is driven by a drive motor to rotate the drive shaft. The rotation of the drive shaft drives the spiral blades to rotate. When the spiral blades rotate, they cause the quicklime inside the moisture-proof storage silo to be turned evenly, which further promotes the desiccant to fully absorb moisture from the quicklime inside the moisture-proof storage silo, avoids local dampness and caking, and ensures that the quicklime is dried evenly as a whole. This ensures the uniformity of material feeding, improves the overall operational stability of the device, and meets the high standard requirements of the papermaking process.

[0025] 3. In this utility model, the hydrated lime in the moisture-proof storage silo enters the conveying cylinder of the feeding and conveying mechanism through the inlet. The conveying auger rotates under the drive of the conveying drive motor, evenly pushing the hydrated lime into the conveying cylinder to the outlet and then discharging it into the pulp tank. The entire process is automatic and requires no manual operation, greatly improving the automation level of papermaking technology. Moreover, the hydrated lime is kept in a sealed environment during the feeding process, which not only effectively prevents external moisture from entering and ensures that the hydrated lime remains dry during the conveying and feeding process, but also avoids dust overflow, further optimizing the workshop environment, improving production efficiency and product quality, and meeting the dual needs of the modern papermaking industry for environmental protection and high efficiency.

[0026] 4. In this utility model, the feeding and dispersing mechanism further improves the dispersibility of hydrated lime through the dispersing screen plate, ensuring its uniform distribution in the pulp tank and avoiding the problem of uneven pulp caused by excessively high local concentration. The dispersing motor drives the scraper to rotate at high speed, so that the hydrated lime is evenly dispersed, avoiding clumping, ensuring feeding accuracy, further improving pulp uniformity, optimizing the papermaking process, realizing an efficient and stable production process, and meeting the needs of high-quality paper manufacturing.

[0027] 5. In this utility model, the dispersing scraper is set in a comb-like shape, which can promote the uniform distribution of hydrated lime on the dispersing screen plate, so that the hydrated lime passes through the screen holes more smoothly, reducing the risk of accumulation and blockage. At the same time, the comb-like scraper is in close contact with the bottom of the screen plate, which can also clean the surface of the screen plate, prevent the screen holes from being blocked, ensure the long-term efficient operation of the screen plate, and further improve the stability and durability of the feeding system. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional structural diagram of a quicklime feeding device according to this utility model.

[0030] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0031] In the diagram, 1. Moisture-proof storage silo; 11. Moisture intake port; 12. Moisture exhaust port; 2. Feed pipe; 3. Feeding and conveying mechanism; 31. Feed inlet; 32. Discharge outlet; 33. Conveying cylinder; 34. Conveying auger; 35. Conveying drive motor; 4. Tilting mechanism; 41. Drive shaft; 42. Drive motor; 43. Spiral blade; 5. Protrusion; 6. Feeding and dispersing mechanism; 61. Dispersing screen plate; 62. Rotating shaft; 63. Dispersing motor; 64. Dispersing scraper; 65. Protective cover; 7. Slurry tank. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] like Figure 1 and Figure 2 As shown, a quicklime feeding device includes a moisture-proof storage silo 1. The top of the moisture-proof storage silo 1 is connected to a hoist via a feed pipe 2. The bottom of the moisture-proof storage silo 1 is connected to the feed inlet 31 of a feeding conveying mechanism 3. The discharge outlet 32 ​​of the feeding conveying mechanism 3 is connected to the feed inlet of a slurry tank 7. The moisture-proof storage silo 1 has a double-layer stainless steel structure, with a desiccant filling the double-layer stainless steel interlayer. Moisture-absorbing ports 11 are evenly distributed on the inner stainless steel plate of the moisture-proof storage silo 1, and moisture-discharging ports 12 are evenly distributed on the outer stainless steel plate of the moisture-proof storage silo 1. Filter screens are provided at both the moisture-absorbing ports 11 and the moisture-discharging ports 12. An electric heating wire is embedded in the desiccant.

[0034] Furthermore, the moisture-proof storage silo 1 is provided with a turning mechanism 4 at its center. The turning mechanism 4 includes a drive shaft 41. The upper end of the drive shaft 41 is connected to a drive motor 42 fixed on the top of the moisture-proof storage silo 1. The lower end of the drive shaft 41 penetrates the top wall of the moisture-proof storage silo 1 and extends into the moisture-proof storage silo 1 and extends to the bottom of the moisture-proof storage silo 1. The drive shaft 41 is provided with spiral blades 43 on the outer wall of the inner part of the moisture-proof storage silo 1.

[0035] Furthermore, the feeding and conveying mechanism 3 includes a conveying cylinder 33 arranged horizontally in the axial direction. The conveying cylinder 33 is provided with a conveying auger 34 coaxial with it. The inlet 31 and the outlet 32 ​​are respectively arranged on the conveying cylinder 33. One end of the conveying auger 34 is connected to the conveying drive motor 35.

[0036] Furthermore, multiple protrusions 5 are evenly distributed on both sides of the blades of the spiral blade 43 and the conveying auger 34.

[0037] Furthermore, a feeding and dispersing mechanism 6 is provided at the connection between the discharge port 32 of the feeding and conveying mechanism 3 and the slurry tank 7. The feeding and dispersing mechanism 6 includes a dispersing screen plate 61 fixed on the inner wall of the discharge port 32.

[0038] Furthermore, a rotating shaft 62 is provided at the center of the dispersing sieve plate 61. The lower end of the rotating shaft 62 is connected to a dispersing motor 63 fixed at the bottom of the dispersing sieve plate 61, and multiple dispersing scrapers 64 are circumferentially fixed at the upper end of the rotating shaft 62.

[0039] Furthermore, the dispersing scraper 64 is comb-shaped, and the bottom of the dispersing sieve plate 61 is in contact with the upper surface of the dispersing sieve plate 61.

[0040] Furthermore, the dispersing motor 63 is provided with a protective cover 65, which is fixed to the bottom of the dispersing screen plate 61.

[0041] The working principle of this utility model is as follows: The quicklime to be fed is conveyed into the moisture-proof storage silo 1 by a hoist. The moisture-proof storage silo 1 utilizes the moisture absorption of a desiccant and the heating effect of an electric heating wire to continuously dry the quicklime stored within. Silica gel, a chemically stable desiccant, can be used. Simultaneously, the turning mechanism 4 drives the drive shaft 41 to rotate via the conveyor drive motor 35. The rotation of the drive shaft 41 drives the spiral blades 43 to rotate, causing the quicklime in the moisture-proof storage silo 1 to rotate evenly, further promoting the desiccant's full absorption of moisture from the quicklime, preventing localized dampness and caking, and ensuring uniform drying of the quicklime. When it is necessary to feed material into the slurry tank 7, the feeding conveyor mechanism 3 is activated. The quicklime in the moisture-proof storage silo 1 enters the conveyor cylinder 33 of the feeding conveyor mechanism 3 through the inlet. The conveying auger 34 rotates under the drive of the conveyor drive motor 35. The hydrated lime entering the conveying cylinder 33 is evenly pushed to the discharge port 32 and discharged into the pulp tank 7 through the discharge port 32, thus realizing the automated and efficient feeding operation of hydrated lime. At the same time, the dispersing screen plate 61 fixed on the inner wall of the discharge port 32 further improves the dispersion of hydrated lime feeding, ensuring that it is evenly distributed in the pulp tank 7. The dispersing motor 63 drives the rotating shaft 62 to rotate, and when the rotating shaft 62 rotates, it drives each dispersing scraper 64 to rotate synchronously. During the rotation, the dispersing scraper 64 continuously hits and moves the hydrated lime falling on the dispersing screen plate 61, which not only further enhances the dispersion effect of hydrated lime, but also further promotes the hydrated lime to fall from the screen holes of the dispersing screen plate 61, ensuring that the hydrated lime enters the pulp tank 7 evenly, avoiding accumulation and blockage, improving feeding efficiency, further ensuring the continuity and stability of the papermaking process, and meeting the requirements of high-end papermaking technology for precise control.

Claims

1. A quicklime feeding device, characterized in that: The device includes a moisture-proof storage silo (1), the top of which is connected to the elevator via a feed pipe (2), the bottom of which is connected to the feed inlet (31) of the feeding conveying mechanism (3), the discharge outlet (32) of the feeding conveying mechanism (3) is connected to the feed outlet of the slurry tank (7), the moisture-proof storage silo (1) is a double-layer stainless steel structure, the double-layer stainless steel interlayer is filled with desiccant, the inner layer of the moisture-proof storage silo (1) has moisture-absorbing ports (11) evenly distributed, the outer layer of the moisture-proof storage silo (1) has moisture-discharging ports (12) evenly distributed, the moisture-absorbing ports (11) and the moisture-discharging ports (12) are both equipped with filter screens, and the desiccant is embedded with heating wires.

2. The quicklime feeding device according to claim 1, characterized in that: The moisture-proof storage silo (1) is provided with a turning mechanism (4) at its center. The turning mechanism (4) includes a drive shaft (41). The upper end of the drive shaft (41) is connected to a drive motor (42) fixed on the top of the moisture-proof storage silo (1). The lower end of the drive shaft (41) penetrates the top wall of the moisture-proof storage silo (1) and extends into the moisture-proof storage silo (1) and extends to the bottom of the moisture-proof storage silo (1). The drive shaft (41) is provided with spiral blades (43) on the outer wall of the inner part of the moisture-proof storage silo (1).

3. The quicklime feeding device according to claim 2, characterized in that: The feeding and conveying mechanism (3) includes a conveying cylinder (33) arranged horizontally in the axial direction. The conveying cylinder (33) is provided with a conveying auger (34) coaxial with it. The inlet (31) and outlet (32) are respectively arranged on the conveying cylinder (33). One end of the conveying auger (34) is connected to the conveying drive motor (35).

4. The quicklime feeding device according to claim 3, characterized in that: The spiral blade (43) and the conveying auger (34) have multiple protrusions (5) evenly distributed on both sides of the blade.

5. The quicklime feeding device according to claim 1, characterized in that: The feeding and conveying mechanism (3) is further provided with a feeding and dispersing mechanism (6) at the connection between the discharge port (32) and the slurry tank (7). The feeding and dispersing mechanism (6) includes a dispersing screen plate (61) fixed on the inner wall of the discharge port (32).

6. A quicklime feeding device according to claim 5, characterized in that: The center of the dispersing sieve plate (61) is provided with a rotating shaft (62), the lower end of the rotating shaft (62) is connected to a dispersing motor (63) fixed at the bottom of the dispersing sieve plate (61), and multiple dispersing scrapers (64) are circumferentially fixed at the upper end of the rotating shaft (62).

7. A quicklime feeding device according to claim 6, characterized in that: The dispersing scraper (64) is comb-shaped, and the bottom of the dispersing sieve plate (61) is in contact with the upper surface of the dispersing sieve plate (61).

8. A quicklime feeding device according to claim 7, characterized in that: The dispersing motor (63) is provided with a protective cover (65), which is fixed to the bottom of the dispersing sieve plate (61).

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