Activated carbon adding device for decoloring process

Abstract

The activated carbon adding device comprises a first storage bin, a second storage bin, a feeding tank and a decoloring tank, the decoloring tank is installed on the ground through a first supporting frame, the second storage bin is installed on the upper portion of the decoloring tank, and the lower portion of the second storage bin is communicated with an inner cavity of the decoloring tank through a screw conveyor; the feeding tank is installed on the upper portion of the second storage bin, and the lower portion of the feeding tank communicates with an inner cavity of the second storage bin. The feeding tank is arranged at the upper part of the second storage bin, and the lower part of the feeding tank is blocked by the baffle during feeding, so that negative pressure is formed in the feeding tank, and the second storage bin can still add activated carbon into the decolorizing tank through the screw conveyor during feeding of the feeding tank, so that feeding and charging of the activated carbon are synchronously performed, and the production efficiency is improved; and a screw in the screw conveyor is driven by a servo motor, so that the addition amount is convenient to control, and the influence on the quality of the oil product due to over-high or over-low activated carbon is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of edible oil processing equipment, and in particular to an activated carbon addition device for a decolorization process. Background Technology

[0002] Edible oils produced through pressing processes, such as peanut oil and tea oil, require further processing after pressing, including coarse filtration, decolorization, and fine filtration, to obtain finished oils that meet market standards. The decolorization process primarily involves mixing activated carbon with the semi-finished oil, using the activated carbon to adsorb impurities and achieve decolorization. Currently, the decolorization process is mainly carried out in a decolorization tank. During decolorization, activated carbon of 1.5% to 2.5% of the weight of the semi-finished oil needs to be added to the decolorization tank. Due to the height of the decolorization tank, it is dangerous for workers to climb to the top of the decolorization tank to add activated carbon. For this reason, some activated carbon adding devices have been designed. For example, the wood-based activated carbon adding device for the refining process of camellia seed oil disclosed in Chinese Patent Application No. 201210461183.8 includes a wood-based activated carbon storage tank, a wood-based activated carbon metering adder, an oil mixing tank, and an oil storage tank. The upper part of the wood-based activated carbon storage tank is connected to a wood-based activated carbon suction pipe, and the wood-based activated carbon storage tank is connected to a vacuum pipe. The lower outlet of the wood-based activated carbon storage tank is connected to the wood-based activated carbon metering adder. This device can extract air from the wood-based activated carbon storage tank through a vacuum pipeline and then use negative pressure to draw the wood-based activated carbon into the storage tank. However, this method requires first extracting air to create negative pressure in the storage tank, and also requires the coordination of valves I, II, and III. The entire feeding process is time-consuming, and after the vacuum is created in the storage tank, the amount of air that can be drawn in is limited, resulting in a small amount of material fed at one time. Furthermore, valve III at the lower outlet of the storage tank needs to be closed during vacuuming, making it impossible to simultaneously feed the activated carbon into the oil mixing tank, thus affecting production efficiency. Therefore, an activated carbon addition device for the decolorization process is needed. This device uses a separate feeding tank to feed the activated carbon, enabling simultaneous feeding and addition to improve production efficiency. It also uses a screw conveyor to add activated carbon to the decolorization tank, facilitating control of the addition amount and preventing excessive or insufficient activated carbon levels from affecting oil quality. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes an activated carbon addition device for the decolorization process. This device uses a separate feeding tank to feed activated carbon, enabling simultaneous feeding and addition of activated carbon, thereby improving production efficiency. Furthermore, activated carbon is added to the decolorization tank via a screw conveyor, facilitating control of the addition amount and preventing excessive or insufficient amounts of activated carbon from affecting the quality of the oil.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes an activated carbon addition device for a decolorization process, comprising: a first storage silo, a second storage silo, a feeding tank, and a decolorization tank. The decolorization tank is mounted on the ground via a first support frame. The second storage silo is mounted on top of the decolorization tank, and its lower part is connected to the inner cavity of the decolorization tank via a screw conveyor. The feeding tank is mounted on top of the second storage silo, and its lower part is connected to the inner cavity of the second storage silo. The first storage silo is mounted on the ground, and its lower part is connected to the feeding tank via a feeding pipe. The upper part of the feeding tank is connected to a negative pressure air source via a suction pipe. A blocking mechanism is provided between the upper part of the second storage silo and the feeding tank.

[0006] Furthermore, the blocking mechanism includes a chute, a baffle, and a telescopic rod. The chute is located at the lower part of the top cover of the second storage silo, and one end of the chute is located below the connection between the feeding tank and the second storage silo. The baffle is slidably installed in the chute. A connecting rod is provided at the lower part of the baffle. One end of the connecting rod is hinged to the baffle, and the other end of the connecting rod is connected to one end of the telescopic rod. The other end of the telescopic rod is connected to the second storage silo through a second support frame. The second support frame surrounds the outer periphery of the second storage silo.

[0007] Furthermore, the end of the groove is provided with a hollow section, and the hollow section is provided with multiple through holes.

[0008] Furthermore, the middle part of the feeding tank is divided into upper and lower layers by a filter plate, the air extraction pipe is connected to the upper space of the feeding tank, and the feeding pipe is connected to the lower space of the feeding tank.

[0009] Furthermore, the first storage bin is connected to the feeding pipe radially, and an air filter canister is provided at the end of the feeding pipe.

[0010] Furthermore, the screw conveyor includes a housing, a screw, and a servo motor. The servo motor is installed on one side of the housing, and the other side of the housing is connected to the decolorization tank. The lower part of the second storage bin is connected to the housing. The screw is installed inside the housing through a dustproof bearing, and one end of the screw is connected to the output shaft of the servo motor.

[0011] Furthermore, a rotary paddle level gauge is installed at the bottom of the second storage silo.

[0012] The beneficial effects of this utility model are as follows: By setting a feeding tank at the top of the second storage silo, and sealing the bottom of the feeding tank with a baffle during feeding, a negative pressure is formed inside the feeding tank. This allows activated carbon to be added to the decolorization tank from the second storage silo via a screw conveyor while the feeding tank is feeding, thus achieving synchronous feeding of activated carbon and improving production efficiency. The screw in the screw conveyor is driven by a servo motor, which facilitates control of the amount added and avoids excessive or insufficient activated carbon, which could affect the quality of the oil. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the second storage bin of this utility model;

[0015] Figure 3 This is a schematic diagram of the exterior of the second storage bin of this utility model;

[0016] Figure 4 This is a schematic diagram of the top structure of the second storage bin of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first storage bin of this utility model;

[0018] In the diagram: 1-First storage bin, 2-Second storage bin, 3-Feeding tank, 4-Decolorization tank, 5-Screw conveyor, 6-Feeding pipe, 7-Extraction pipe, 8-Crater, 9-Baffle, 10-Telescopic rod, 11-Connecting rod, 12-Second support frame, 13-Hollow section, 14-Filter plate, 15-Air filter tank, 16-Casing, 17-Screw, 18-Servo motor, 19-Rotary paddle level gauge. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] like Figures 1 to 5 As shown, an embodiment of this utility model provides an activated carbon addition device for a decolorization process, comprising: a first storage silo 1, a second storage silo 2, a feeding tank 3, and a decolorization tank 4. The decolorization tank 4 is installed on the ground via a first support frame. The second storage silo 2 is installed on the upper part of the decolorization tank 4, and the lower part of the second storage silo 2 is connected to the inner cavity of the decolorization tank 4 via a screw conveyor 5. The feeding tank 3 is installed on the upper part of the second storage silo 2, and the lower part of the feeding tank 3 is connected to the inner cavity of the second storage silo 2. The first storage silo 1 is installed on the ground, and the lower part of the first storage silo 1 is connected to the feeding tank 3 via a feeding pipe 6. The upper part of the feeding tank 3 is connected to a negative pressure air source via a suction pipe 7. A blocking mechanism is provided between the upper part of the second storage silo 2 and the feeding tank 3.

[0023] During decolorization, the semi-finished oil is piped into the decolorization tank 4. Simultaneously, workers open bags of activated carbon and pour them into the first storage bin 1. When the activated carbon is being fed, the telescopic rod 10 extends, thereby driving the baffle 9 to move below the connection between the feeding tank 3 and the second storage bin 2. The negative pressure air source is a negative pressure fan or a negative pressure generator. Air is drawn from the feeding tank 3 through the negative pressure air source. Due to the obstruction of the baffle 9, the pressure inside the feeding tank 3 drops, and air is drawn in through the feeding pipe 6. The drawn-in air carries the activated carbon from the lower part of the first storage bin 1 into the feeding tank 3. The activated carbon is blocked by the filter plate 14, causing it to remain in the feeding tank 3. Thus, the activated carbon is lifted to the top of the decolorization tank 4 by suction, eliminating the need for manual handling and reducing labor intensity. After a period of feeding, the negative pressure air source stops pumping air, then the telescopic rod 10 retracts, and the baffle 9 slides to the other side of the chute 8. The activated carbon sucked into the feeding tank 3 falls into the second storage silo 2 under the action of gravity. The activated carbon in the second storage silo 2 is added to the decolorizing tank 4 through the screw conveyor 5. The screw conveyor 5 is driven by the servo motor 18. Since the amount of material fed per revolution of the screw 17 is relatively constant, the number of revolutions of the screw 17 can be controlled by the servo motor 18 to achieve quantitative feeding. During feeding, the baffle 9 blocks the connection between the feeding tank 3 and the second storage silo 2, so that feeding from the feeding tank 3 will not affect the operation of the screw conveyor 5 in the second storage silo 2. This allows the feeding into the decolorizing tank 4 and feeding from the feeding tank 3 to be carried out synchronously, improving production efficiency. The second storage silo 2 can store a certain amount of activated carbon. The material level in the second storage silo 2 is detected by the rotary paddle level gauge 19, which can prevent the screw conveyor 5 from running idle due to material shortage.

[0024] In a preferred embodiment, the blocking mechanism includes a chute 8, a baffle 9, and a telescopic rod 10. The chute 8 is located at the lower part of the top cover of the second storage silo 2, and one end of the chute 8 is located below the connection between the feeding tank 3 and the second storage silo 2. The baffle 9 is slidably installed in the chute 8. A connecting rod 11 is provided at the lower part of the baffle 9. One end of the connecting rod 11 is hinged to the baffle 9, and the other end of the connecting rod 11 is connected to one end of the telescopic rod 10. The other end of the telescopic rod 10 is connected to the second storage silo 2 through a second support frame 12. The second support frame 12 surrounds the outer periphery of the second storage silo 2. The movement trajectory of the baffle 9 is restricted by the slide groove 8, so that it can only slide along the slide groove 8. When the baffle 9 slides to the end of the slide groove 8, the baffle 9 is located below the connection between the feeding tank 3 and the second storage bin 2. When the feeding tank 3 is feeding, the baffle 9 will be more tightly attached to the top cover of the second storage bin 2 under the action of air pressure, so as to seal the connection. It is not necessary to completely seal the connection when feeding. It is only necessary to ensure that more than 90% of the air enters the feeding tank 3 from the feeding pipe 6. The telescopic rod 10 can be an electric, pneumatic or hydraulic telescopic rod. The telescopic rod 10 drives the connecting rod 11 and the baffle 9 to realize the adjustment of the position of the baffle 9.

[0025] Preferably, the end of the chute 8 is provided with a perforated portion 13, which has multiple through holes. Since some activated carbon may fall onto the chute 8 when it falls from the feeding tank 3 to the second storage bin 2, the perforated portion 13 is provided at the end of the chute 8 to prevent this activated carbon from blocking the baffle 9. The activated carbon is mainly in powder form. When the baffle 9 moves, it can push the activated carbon out of the perforated portion 13 into the chute 8, preventing the activated carbon from accumulating in the chute 8.

[0026] Specifically, the middle of the feeding tank 3 is divided into upper and lower layers by a filter plate 14. The exhaust pipe 7 is connected to the upper space of the feeding tank 3, and the feeding pipe 6 is connected to the lower space of the feeding tank 3. Solid-gas separation is achieved through the filter plate 14, so that after the activated carbon enters the feeding tank 3 with the airflow, it can remain in the lower layer of the feeding tank 3. After the activated carbon accumulates to a certain amount, it is discharged from the feeding tank 3 into the second storage bin 2. The airflow drawn into the feeding tank 3 passes through the filter plate 14 and flows out of the feeding tank 3 through the exhaust pipe 7. The feeding tank 3 can continuously draw in air under the action of the exhaust pipe 7 to achieve feeding.

[0027] In a preferred embodiment, the first storage bin 1 is connected to the feed pipe 6 radially. The end of the feed pipe 6 is provided with an air filter canister 15. When the feed pipe 6 is evacuated, the air is mainly drawn into the feed pipe 6 through the air filter canister 15, and then the activated carbon from the bottom of the first storage bin 1 is carried away. If activated carbon is drawn in directly from the first storage bin 1, it is easy to cause the activated carbon content in the feed pipe 6 to be too high and blockage. In addition, the air filter canister 15 can filter dust and prevent dust from being drawn in and added to the oil.

[0028] Preferably, the screw conveyor 5 includes a housing 16, a screw 17, and a servo motor 18. The servo motor 18 is installed on one side of the housing 16, and the other side of the housing 16 is connected to the decolorizing tank 4. The lower part of the second storage bin 2 is connected to the housing 16. The screw 17 is installed inside the housing 16 through a dustproof bearing, and one end of the screw 17 is connected to the output shaft of the servo motor 18.

[0029] The screw pitch on screw 17 is constant, so the amount of activated carbon delivered when screw 17 rotates once is relatively constant when there is no shortage of material. Servo motor 18 can be controlled by PLC to control the number of rotations, so that screw conveyor 5 can control the amount of activated carbon added according to the amount of oil in decolorization tank 4, so as to meet the requirement that the amount of activated carbon added is 1.5% to 2.5% of the weight of semi-finished oil, and avoid the amount of activated carbon added too high or too low.

[0030] In a preferred embodiment, a rotary paddle level gauge 19 is provided at the lower part of the second storage silo 2. The rotary paddle level gauge 19 is a commercially available rotary paddle level gauge. It drives a rotating plate to rotate through a rotating shaft. When the activated carbon level in the second storage silo 2 is higher than the rotary paddle level gauge 19, the rotating plate cannot rotate due to the obstruction of the activated carbon. When the material level in the second storage silo 2 is too low, the resistance of the rotary paddle level gauge 19 to the activated carbon decreases, and the rotating plate can rotate. This principle is used to detect whether the material level in the second storage silo 2 is lower than the threshold. When the material level in the second storage silo 2 is too low, a signal is fed back to the controller. The controller controls the negative pressure air source and the telescopic rod 10 to take corresponding actions. After feeding through the feeding tank 3, the material is replenished into the second storage silo 2 to avoid material shortage in the second storage silo 2 and to ensure the stable feeding of the screw conveyor 5.

[0031] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. An activated carbon addition device for a decolorization process, characterized in that, include: The facility comprises a first storage bin (1), a second storage bin (2), a feeding tank (3), and a decolorizing tank (4). The decolorizing tank (4) is installed on the ground via a first support frame. The second storage bin (2) is installed on the upper part of the decolorizing tank (4), and the lower part of the second storage bin (2) is connected to the inner cavity of the decolorizing tank (4) via a screw conveyor (5). The feeding tank (3) is installed on the upper part of the second storage bin (2), and the lower part of the feeding tank (3) is connected to the inner cavity of the second storage bin (2). The first storage bin (1) is installed on the ground, and the lower part of the first storage bin (1) is connected to the feeding tank (3) via a feeding pipe (6). The upper part of the feeding tank (3) is connected to a negative pressure air source via an air extraction pipe (7). A blocking mechanism is provided between the upper part of the second storage bin (2) and the feeding tank (3).

2. The activated carbon addition device for a decolorization process according to claim 1, characterized in that, The blocking mechanism includes a chute (8), a baffle (9), and a telescopic rod (10). The chute (8) is located at the lower part of the top cover of the second storage bin (2), and one end of the chute (8) is located below the connection between the feed tank (3) and the second storage bin (2). The baffle (9) is slidably installed in the chute (8). A connecting rod (11) is provided at the lower part of the baffle (9). One end of the connecting rod (11) is hinged to the baffle (9), and the other end of the connecting rod (11) is connected to one end of the telescopic rod (10). The other end of the telescopic rod (10) is connected to the second storage bin (2) through a second support frame (12). The second support frame (12) surrounds the outer periphery of the second storage bin (2).

3. The activated carbon addition device for a decolorization process according to claim 2, characterized in that, The end of the groove (8) is provided with a hollow part (13), and the hollow part (13) is provided with multiple through holes.

4. The activated carbon addition device for a decolorization process according to claim 1, characterized in that, The middle part of the feeding tank (3) is divided into upper and lower layers by a filter plate (14). The air extraction pipe (7) is connected to the upper space of the feeding tank (3), and the feeding pipe (6) is connected to the lower space of the feeding tank (3).

5. The activated carbon addition device for a decolorization process according to claim 1, characterized in that, The first storage bin (1) is connected to the feeding pipe (6) radially, and the end of the feeding pipe (6) is provided with an air filter canister (15).

6. The activated carbon addition device for a decolorization process according to claim 1, characterized in that, The screw conveyor (5) includes a housing (16), a screw (17), and a servo motor (18). The servo motor (18) is installed on one side of the housing (16), and the other side of the housing (16) is connected to the decolorizing tank (4). The lower part of the second storage bin (2) is connected to the housing (16). The screw (17) is installed inside the housing (16) through a dustproof bearing, and one end of the screw (17) is connected to the output shaft of the servo motor (18).

7. The activated carbon addition device for a decolorization process according to claim 1, characterized in that, The second storage bin (2) is equipped with a rotary level gauge (19) at the bottom.

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