Preparation device of refined sugar clarifying agent lime milk

Abstract

The utility model discloses a sugar refining clarifying agent lime milk preparation device which comprises a pretreatment structure, the pretreatment structure comprises a barrel body, an air hammer, a gear motor, a metal filter screen, a rotating shaft, a grinding roller and a brush, an automatic feeding structure is arranged on the barrel body, the air hammer is installed at the bottom of the outer side of the barrel body, the gear motor is installed at the top of the barrel body, and the metal filter screen is installed on the rotating shaft. A metal filter screen is installed in the barrel body, a vertical rotating shaft is arranged above the filter screen, the top end of the rotating shaft is connected with an output shaft of the speed reducing motor through a coupler, the grinding roller and the brush are both arranged on the rotating shaft, and the barrel body is arranged at the top of the lime preparation box; a discharge hole is formed in the bottom of the barrel body and is communicated with a feed hole in the top of the lime preparation box through a corrugated pipe, the lime preparation box is connected with the primary emulsification box through a water pump, the primary emulsification box is connected with the secondary emulsification box through a water pump, and the secondary emulsification box is connected with the qualified lime milk box through a water pump; the device adopts automatic preparation of lime milk, so that the labor intensity of workers is reduced, and human body contact with lime is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lime milk preparation technology, specifically to a lime milk preparation device for sugar refining clarifying agent. Background Technology

[0002] In the sugar industry, lime milk is widely used as a key clarifying agent in the decolorization, impurity removal, and pH adjustment of sugar juice. Its preparation quality directly affects the subsequent evaporation and crystallization efficiency, as well as the purity and color of the finished sugar. Currently, the process requirements for lime milk concentration in domestic sugar refineries are between 16-18 Baume degrees. Due to the characteristics of loose lime, severe dust, and the tendency of lime milk to form scale, there is no electronic instrument that can stably measure the concentration of lime milk. For a long time, the preparation process of lime milk has been difficult to automate, and most of it is prepared manually using a single-stage emulsification process. Therefore, it is often necessary to manually adjust the amount of ash and water, and add water to adjust the final concentration. The labor intensity of the workers is high, and the emulsification time is short. If the lime milk is not fully emulsified before use, the lag reaction is serious, the saturation process effect is poor, and it is easy to form scale. In addition, the lime powder required for preparing lime milk is prone to clumping during storage due to the influence of temperature and humidity. When preparing lime milk, the clumped lime powder may affect the quality of lime milk.

[0003] Therefore, we have designed a lime milk preparation device for sugar refining to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for preparing lime milk as a clarifying agent for sugar refining, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lime milk preparation device for sugar refining clarifier, comprising a pretreatment structure, the pretreatment structure including a barrel, an air hammer, a geared motor, a metal filter screen, a rotating shaft, a rolling roller, and a brush. An automatic feeding structure is provided on the barrel. The air hammer is installed on the outer bottom of the barrel, the geared motor is installed on the top of the barrel, and a metal filter screen is installed inside the barrel. A vertical rotating shaft is installed above the filter screen, and the top end of the rotating shaft is connected to the output shaft of the geared motor via a coupling. The rolling roller and the brush are both mounted on the rotating shaft. The barrel is located on top of a lime preparation box, and a discharge port is provided at the bottom of the barrel, which is connected to the inlet at the top of the lime preparation box via a corrugated pipe. The lime preparation box is connected to a primary emulsification box via a water pump, the primary emulsification box is connected to a secondary emulsification box via a water pump, and the secondary emulsification box is connected to a lime milk qualification box via a water pump.

[0006] Preferably, the feeding structure includes a lime tower and a variable frequency screw conveyor. The top of the barrel is provided with a feed inlet and is connected to the discharge port of the variable frequency screw conveyor through a corrugated pipe. The feed inlet of the variable frequency screw conveyor is connected to the discharge port at the bottom of the lime tower. A pressure sensor is installed at the discharge port at the bottom of the lime tower.

[0007] Preferably, the outside of the barrel is equipped with three support columns arranged in a circular array, and three rubber blocks are installed on the top of the lime preparation box corresponding to the positions of the three support columns, with the three support columns fixed on the three rubber blocks respectively.

[0008] Preferably, a first water pump is provided between the lime preparation box and the primary emulsification box. The inlet end of the first water pump is connected to the outlet at the bottom of the lime preparation box, and the outlet end of the first water pump is connected to the reflux port at the top of the lime preparation box and the feed port at the top of the primary emulsification box via a tee. Switch valves are installed on both the reflux port at the top of the lime preparation box and the feed port at the top of the primary emulsification box.

[0009] Preferably, a second water pump is provided between the primary emulsifying tank and the secondary emulsifying tank. The inlet end of the second water pump is connected to the discharge port at the bottom of the primary emulsifying tank, and the outlet end of the second water pump is connected to the reflux port at the top of the primary emulsifying tank and the feed port at the top of the secondary emulsifying tank via a tee. Switch valves are installed on both the reflux port at the top of the primary emulsifying tank and the feed port at the top of the secondary emulsifying tank.

[0010] Preferably, a third water pump is provided between the secondary emulsification tank and the lime slurry qualified tank. The inlet end of the third water pump is connected to the outlet at the bottom of the secondary emulsification tank, and the outlet end of the third water pump is connected to the reflux port at the top of the secondary emulsification tank and the feed port at the top of the lime slurry qualified tank via a tee. Switch valves are installed on both the reflux port at the top of the secondary emulsification tank and the feed port at the top of the lime slurry qualified tank.

[0011] Preferably, a stirrer is installed on the top of both the lime preparation tank and the lime slurry qualified tank, an emulsifier is installed on the top of both the primary emulsification tank and the secondary emulsification tank, and a liquid level sensor is installed inside the lime preparation tank, the primary emulsification tank, the secondary emulsification tank and the lime slurry qualified tank.

[0012] Preferably, the top of the lime preparation box is provided with a water inlet, and the water inlet is connected to a water source through a pipe, on which a regulating valve and a flow meter are installed.

[0013] Preferably, the pressing roller is rotatably mounted on the bottom side of the rotating shaft via a bearing, and the brush is fixed on the bottom side of the rotating shaft and symmetrically arranged with the pressing roller. The side of the pressing roller and the bristles of the brush are in contact with the top of the metal filter screen.

[0014] Compared with the prior art, this utility model provides a device for preparing lime milk as a clarifying agent in sugar refining, which has the following beneficial effects:

[0015] 1. The lime milk preparation device for sugar refining clarifier adopts automated lime milk preparation, which reduces the labor intensity of workers, reduces human contact with lime, and reduces the harm of lime to people. Moreover, the device adopts multi-stage emulsification, and the material can be circulated and emulsified in each stage of emulsification tank, which can ensure complete emulsification of lime milk, thereby avoiding delayed reaction, ensuring the effect of saturation process, and preventing clumping.

[0016] 2. This sugar refining clarifying agent lime milk preparation device, by setting a barrel at the feed inlet of the lime preparation box and installing a metal filter screen inside the barrel, can screen out the lumpy lime powder and avoid its impact on the quality of the lime milk. By setting a geared motor to drive the crushing roller to roll on the metal filter screen, the lumpy lime powder can be crushed so that it can pass through the filter screen, thereby ensuring the accuracy of the lime powder feed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pipe connection of this utility model;

[0019] Figure 3 This is a schematic diagram of the pretreatment structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the barrel of this utility model.

[0021] Reference numerals: 1. Barrel body; 2. Air hammer; 3. Gear motor; 4. Metal filter screen; 5. Rotating shaft; 6. Roller roller; 7. Brush; 8. Lime preparation box; 9. Primary emulsification box; 10. Secondary emulsification box; 11. Lime slurry qualified box; 12. Lime tower; 13. Variable frequency screw conveyor; 14. Support column; 15. Rubber block; 16. Switch valve; 17. First water pump; 18. Second water pump; 19. Third water pump; 20. Agitator; 21. Emulsifier; 22. Regulating valve; 23. Flow meter. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-4This embodiment provides a lime milk preparation device for sugar refining clarifier, including a pretreatment structure, a lime preparation box 8, a primary emulsification box 9, a secondary emulsification box 10, and a lime milk qualification box 11. In the pretreatment structure, the barrel 1 serves as the main container, and the reduction motor 3 is fixed to the top of the barrel 1. Its output shaft is connected to the top of the rotating shaft 5 via a coupling. A metal filter screen 4 is installed inside the barrel 1 to screen out clumps of lime powder. The rotating shaft 5 is located inside the barrel 1, and a rolling roller 6 is mounted on its side via bearings. A brush 7 is also fixed to the side of the rotating shaft 5. The brush 7 and the roller 6 are symmetrically distributed on both sides of the rotating shaft. Both are in contact with the surface of the metal filter screen 4. The roller 6 can be driven to roll on the filter screen by the reduction motor 3, and the brush 7 can be controlled to clean the filter screen at the same time. The air hammer 2 is installed on the bottom of the outer side of the barrel 1. The air hammer 2 can help the lime powder pass through the metal filter screen 4 quickly by hitting the barrel 1. At the same time, it can also shake off the lime powder attached to the barrel wall. The lime powder enters from the feed port at the top of the barrel 1. The lime powder that has not clumped can pass through the metal filter screen 4 quickly. The lime powder that has clumped can also pass through the metal filter screen 4 after being broken by the roller 6. The brush 7 continuously cleans the filter screen surface to prevent clogging of the filter holes. The lime powder eventually enters the lime preparation box 8 through the discharge port at the bottom of the barrel 1 and the corrugated pipe. The top of the lime preparation box 8 is connected to the barrel 1 via three support columns 14. The bottom of the support columns 14 is fixed to rubber blocks 15 to reduce the impact of barrel 1 vibration on the lime preparation box 8. The lime preparation box 8 is connected to the primary emulsification box 9 via the first water pump 17. The primary emulsification box 9 is connected to the secondary emulsification box 10 via the second water pump 18. The secondary emulsification box 10 is connected to the lime slurry qualified box 11 via the third water pump 19. Each water pump inlet is connected to the discharge port at the bottom of the preceding tank, and the outlet is connected to the return port at the top of the preceding tank and the feed port at the top of the following tank via a tee. Each return port and feed port is equipped with a switch valve 16. A stirrer 20 is installed on the top of the lime preparation tank 8 and the lime slurry qualified tank 11. An emulsifier 21 is installed on the top of the primary emulsification tank 9 and the secondary emulsification tank 10. Each tank is equipped with a liquid level sensor. The lime preparation tank 8 is equipped with a water inlet at the top, which is connected to a water source through a pipe. A regulating valve 22 and a flow meter 23 are installed on the pipe for precise control of the water supply.

[0024] Example 2: Based on Example 1, this example adds an automatic feeding structure, including a lime tower 12 and a variable frequency screw conveyor 13. The feed inlet at the top of the barrel 1 is connected to the discharge outlet of the variable frequency screw conveyor 13 via a corrugated pipe. The feed inlet of the variable frequency screw conveyor 13 is connected to the discharge outlet at the bottom of the lime tower 12. The lime tower 12 is used to store lime powder required for preparing lime slurry. The variable frequency screw conveyor 13 is used to transport the lime powder in the lime tower 12 to the barrel 1. A pressure sensor is installed at the discharge outlet at the bottom of the lime tower 12. The pressure sensor can measure the pressure change inside the lime tower 12, thereby indirectly reflecting the amount of lime powder discharged. During the process of conveying lime powder, the reduction motor 3 synchronously drives the rotating shaft 5 to rotate, and the crushing roller 6 and brush 7 work continuously to ensure that the lime powder entering the lime preparation box 8 does not clump. If the pressure sensor detects a sudden drop in pressure inside the lime tower 12, such as when the material is exhausted, the variable frequency screw conveyor 13 stops running and triggers an alarm to prompt for replenishment. The entire device is connected to a PLC control cabinet, and the automatic preparation of lime slurry is realized through the PLC control system.

[0025] Example 3: This example focuses on optimizing the emulsification process. Building upon Example 1, it enhances the circulating emulsification function. The three-way structure at the outlets of the first pump 17, second pump 18, and third pump 19 allows for unidirectional flow or circulating emulsification of materials between the tanks. For example, after the material in the primary emulsification tank 9 is drawn in by the second pump 18, it can operate in two modes: one is to close the switch valve 16 at the top return port of the primary emulsification tank 9 and open the switch valve 16 at the top inlet of the secondary emulsification tank 10, allowing the material to directly enter the secondary emulsification tank. One method is to close the switch valve 16 at the top of the secondary emulsifying tank 10 and open the switch valve 16 at the top of the primary emulsifying tank 9, so that the material returns to the top of the primary emulsifying tank 9 for re-emulsification. The same applies between the secondary emulsifying tank 10 and the lime milk qualified tank 11. By adjusting the opening and closing combination of each switch valve 16, multi-stage circulating emulsification can be achieved, thereby ensuring that the lime milk is fully emulsified. In addition, the speed of the agitator 20 and emulsifier 21 at the top of each tank can be independently controlled to adapt to the needs of different emulsification stages.

[0026] Operating Procedure: Before starting the device, the operator completes equipment initialization via the PLC control cabinet, including checking the liquid level sensors in each chamber, the switch valve support column 16, the water pump, and the communication status of the sensors. It is confirmed that the lime content in the lime tower support column 12 is sufficient and the pressure sensor feedback is normal, and that the water source pipeline regulating valve support column 22 is in the closed state. During formal operation, the PLC control cabinet first starts the variable frequency screw conveyor support column 13, adjusting the conveying frequency based on real-time pressure sensor data to ensure sufficient lime in the lime tower support column 12. The lime powder is conveyed to the feed inlet at the top of the barrel support column 1. Simultaneously, the air hammer 2 and the reduction motor support column 3 are activated. The air hammer 2 strikes the barrel 1, helping the lime powder to pass through the sieve quickly. The motor-driven rotating shaft support column 5 drives the crushing roller support column 6 and the brush support column 7 to rotate. The clumps of lime powder are broken up by the crushing roller support column 6 and pass through the metal filter screen support column 4. The brush support column 7 continuously cleans the surface of the filter screen to prevent clogging of the filter holes. The lime powder passing through the filter screen passes through the bottom of the barrel support column 1. The material falls into the lime mixing tank support column 8 at the outlet. At this time, the PLC control cabinet opens the regulating valve support column 22 at the top of the lime mixing tank support column 8. The water addition is controlled according to the feedback value of the flow meter support column 23. The mixture is mixed with the agitator support column 20 to form lime slurry. The liquid level sensor monitors the liquid level in real time. When the preset upper limit is reached, the PLC control cabinet automatically shuts off the variable frequency screw conveyor support column 13 and the regulating valve support column 22. Then, the first water pump support column 17 is started, and its outlet is opened. The switch valve support column 16, which connects the inlet of the primary emulsification tank support column 9, transports the lime slurry to the primary emulsification tank support column 9. The lime slurry is then emulsified by the emulsifier support column 21 at the top of the primary emulsification tank support column 9. After primary emulsification, the slurry is transported to the secondary emulsification tank support column 10 via the second water pump support column 18 for secondary emulsification. Finally, the emulsified lime slurry is transported to the lime slurry qualified tank support column 11 via the third water pump support column 19, ready for use.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preparing lime milk as a clarifying agent for sugar refining, comprising a pretreatment structure, characterized in that: The pretreatment structure includes a barrel (1), an air hammer (2), a geared motor (3), a metal filter (4), a rotating shaft (5), a pressing roller (6), and a brush (7). An automatic feeding structure is provided on the barrel (1). The air hammer (2) is installed on the bottom of the outer side of the barrel (1). The geared motor (3) is installed on the top of the barrel (1). A metal filter (4) is installed inside the barrel (1). A vertical rotating shaft (5) is provided above the filter. The top of the rotating shaft (5) is connected to the geared motor through a coupling. (3) The output shaft is connected, the rolling roller (6) and the brush (7) are both set on the rotating shaft (5), the barrel (1) is set on the top of the lime preparation box (8), the bottom of the barrel (1) is provided with a discharge port and is connected to the feed port at the top of the lime preparation box (8) through a corrugated pipe, the lime preparation box (8) is connected to the first-level emulsification box (9) through a water pump, the first-level emulsification box (9) is connected to the second-level emulsification box (10) through a water pump, and the second-level emulsification box (10) is connected to the lime milk qualified box (11) through a water pump.

2. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: The feeding structure includes a lime tower (12) and a variable frequency screw conveyor (13). The top of the barrel (1) is provided with a feed inlet and is connected to the discharge port of the variable frequency screw conveyor (13) through a corrugated pipe. The feed inlet of the variable frequency screw conveyor (13) is connected to the discharge port at the bottom of the lime tower (12). A pressure sensor is installed at the discharge port at the bottom of the lime tower (12).

3. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: The barrel (1) is equipped with three support columns (14) arranged in a ring array on its exterior. The top of the lime preparation box (8) is equipped with three rubber blocks (15) corresponding to the positions of the three support columns (14). The three support columns (14) are fixed on the three rubber blocks (15) respectively.

4. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: A first water pump (17) is provided between the lime preparation box (8) and the primary emulsification box (9). The inlet end of the first water pump (17) is connected to the outlet at the bottom of the lime preparation box (8). The outlet end of the first water pump (17) is connected to the reflux port at the top of the lime preparation box (8) and the feed port at the top of the primary emulsification box (9) respectively through a tee. Switch valves (16) are installed on the reflux port at the top of the lime preparation box (8) and the feed port at the top of the primary emulsification box (9).

5. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: A second water pump (18) is provided between the primary emulsifying tank (9) and the secondary emulsifying tank (10). The inlet end of the second water pump (18) is connected to the discharge port at the bottom of the primary emulsifying tank (9). The outlet end of the second water pump (18) is connected to the reflux port at the top of the primary emulsifying tank (9) and the feed port at the top of the secondary emulsifying tank (10) respectively through a tee. Switch valves (16) are installed on the reflux port at the top of the primary emulsifying tank (9) and the feed port at the top of the secondary emulsifying tank (10).

6. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: A third water pump (19) is provided between the secondary emulsification tank (10) and the lime milk qualified tank (11). The inlet end of the third water pump (19) is connected to the discharge port at the bottom of the secondary emulsification tank (10), and the outlet end of the third water pump (19) is connected to the reflux port at the top of the secondary emulsification tank (10) and the feed port at the top of the lime milk qualified tank (11) respectively through a tee. Switch valves (16) are installed on the reflux port at the top of the secondary emulsification tank (10) and the feed port at the top of the lime milk qualified tank (11).

7. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: A stirrer (20) is installed on the top of the lime preparation tank (8) and the lime slurry qualified tank (11). An emulsifier (21) is installed on the top of the primary emulsification tank (9) and the secondary emulsification tank (10). A liquid level sensor is installed inside the lime preparation tank (8), the primary emulsification tank (9), the secondary emulsification tank (10) and the lime slurry qualified tank (11).

8. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: The top of the lime preparation box (8) is provided with a water inlet, and the water inlet is connected to a water source through a pipe. A regulating valve (22) and a flow meter (23) are installed on the connecting pipe.

9. The apparatus for preparing lime milk as a clarifying agent for sugar refining according to claim 1, characterized in that: The rolling roller (6) is rotatably mounted on the bottom side of the rotating shaft (5) via a bearing. The brush (7) is fixed on the bottom side of the rotating shaft (5) and is symmetrically arranged with the rolling roller (6). The side of the rolling roller (6) and the bristles of the brush (7) are in contact with the top of the metal filter screen (4).

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