Foreign matter prevention and control device for discharging opening of centrifugal machine for ternary precursor washing

Abstract

The utility model discloses a centrifugal machine feed opening foreign matter prevention and control device for ternary precursor washing, and relates to the technical field of centrifugal machine foreign matter prevention and control. The centrifugal machine feed opening foreign matter prevention and control device for ternary precursor washing comprises a centrifugal machine supporting platform, and supporting columns are fixedly installed on the left side and the right side of the lower surface of the centrifugal machine supporting platform; the centrifugal machine shell is fixedly installed in the transverse middle position of the upper surface of the centrifugal machine supporting platform in an inserted mode, the bottom end of the centrifugal machine shell downwards extends out of the lower surface of the centrifugal machine supporting platform, separation and feeding are conducted on a discharging port and an air supplementing port of the centrifugal machine, the discharging port is closed in the washing process, and a filtering device is installed at the air supplementing port. The centrifugal machine is in a benign closed state in the working process, an air supply source is purified by the filter element and then enters the centrifugal machine, impurities and foreign matter in air are prevented from being adsorbed by the induced draft fan to enter materials, the foreign matter content in semi-finished products in the centrifugal washing process can be reduced, and the product cleanliness and the production yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foreign object prevention and control of centrifuges, in particular to a foreign object prevention and control device for the feeding port of a centrifuge used for washing ternary precursors. Background Art

[0002] In the washing process during the production of ternary precursors for lithium-ion battery cathode materials, it refers to the process of inputting the qualified ternary precursor slurry into a washing device for solid-liquid separation and washing to remove impurity ions to obtain a relatively pure filter cake. As a common washing device in the production of ternary precursors, the centrifuge has attracted much attention and is particularly important for obtaining high-quality ternary precursor semi-finished products. Its principle is a filtering device that realizes solid-liquid separation through a strong centrifugal force.

[0003] With the expansion of the market demand for lithium-ion batteries, especially the significant improvement in the quality requirements for power lithium-ion batteries, it goes without saying that improving the quality of ternary precursors for lithium battery cathode materials can enhance the industry's competitiveness. In recent years, the client has strictly controlled the cleanliness of the materials. Since foreign objects in the materials may pose threats to machinery and equipment, product quality, and personnel safety, as a supplier, it is crucial to prevent and improve the introduction of foreign objects during product production.

[0004] The ternary precursor slurry contains a certain amount of ammonia nitrogen. During the washing process, ammonia gas, water vapor in the slurry, and water vapor in the detergent are all waste gases and are prone to dispersing in the workshop. According to the regulations of occupational health and hygiene standards, starting from improving the workshop working environment, these waste gases need to be centrally treated. Currently, the waste gas in the workshop is mainly pumped from the side pipeline of the centrifuge to the spray tower through a draft fan. The air supplement port and the feeding port of the existing centrifuge share the same opening and are in a semi-open state without protective measures. This will cause air containing impurity foreign objects to pass through the materials, filter bags, and drum in the centrifuge cavity in sequence as the air supplement source during the operation of the centrifuge and then be adsorbed into the waste gas pipeline. The foreign objects will be intercepted by the materials and filter bags, and after feeding, the foreign objects will be mixed with the materials, easily resulting in unqualified material cleanliness, a decrease in product yield, and an inability to meet the usage requirements of the client. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a foreign object prevention and control device for the feeding port of a centrifuge used for washing ternary precursors, which can solve the problem that during the operation of the centrifuge, air containing impurity foreign objects passes through the materials, filter bags, and drum in the centrifuge cavity in sequence as the air supplement source and then is adsorbed into the waste gas pipeline. The foreign objects will be intercepted by the materials and filter bags, and after feeding, the foreign objects will be mixed with the materials, easily resulting in unqualified material cleanliness, a decrease in product yield, and an inability to meet the usage requirements of the client.

[0007] (2) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a foreign object prevention and control device for the blanking port of a centrifuge used for washing ternary precursors, which includes a centrifuge support platform. Support columns are fixedly installed on both the left and right sides of the lower surface of the centrifuge support platform. A centrifuge housing is inserted and fixedly installed at the horizontal middle position of the upper surface of the centrifuge support platform, and the bottom end of the centrifuge housing extends downward out of the lower surface of the centrifuge support platform;

[0009] Among them, an exhaust pipe is inserted and fixedly installed on the left side of the outer surface of the centrifuge housing. The exhaust pipe is communicated with the inside of the centrifuge housing, and an air outlet valve is fixedly installed on the front side of the exhaust pipe;

[0010] Among them, a separation device is arranged inside the centrifuge housing;

[0011] Among them, a conical connecting pipe is fixedly installed at the bottom end of the centrifuge housing, and a waste liquid pipe is inserted and fixedly installed on the left side of the outer surface of the conical connecting pipe;

[0012] Among them, a discharge pipe is fixedly installed at the bottom end of the conical connecting pipe, and a filtering device is arranged on the discharge pipe.

[0013] Preferably, the separation device includes a drum, the drum is rotatably installed at the bottom end inside the centrifuge housing, and a filter bag is sleeved and fixedly installed on the outside of the drum.

[0014] Preferably, the filtering device includes a supplementary air pipe, the supplementary air pipe is inserted and fixedly installed on the right side of the outer surface of the discharge pipe. A filter element groove is opened at the right end inside the supplementary air pipe. Limit grooves are opened on both the upper and lower sides inside the filter element groove. Limit plates are slidably installed inside the two limit grooves. A filter element is fixedly installed on the opposite ends of the two limit plates, and the width of the filter element is smaller than the depth of the filter element groove.

[0015] Preferably, a fixed cover is threadedly connected to the right end outer surface of the supplementary air pipe. An air inlet hole is opened on the right surface of the fixed cover, and a limit ring is fixedly installed on the left surface of the fixed cover corresponding to the position of the air inlet hole.

[0016] Preferably, a valve ball is rotatably installed at the left end inside the supplementary air pipe. A rotating rod is fixedly installed at the top end of the valve ball. The top end of the rotating rod rotatably penetrates through the upper surface of the supplementary air pipe, and a rotating disk is fixedly installed at the top end of the rotating rod.

[0017] Preferably, an insertion plate groove is opened on the front side of the bottom end outer surface of the discharge pipe. An activity insertion plate is inserted and slidably installed inside the insertion plate groove. A sealing gasket is fixedly installed at the bottom end of the activity insertion plate corresponding to the position of the insertion plate groove, and a rectangular hole is opened at the front end of the activity insertion plate.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] (1) For the foreign object prevention and control device at the discharge opening of the centrifuge for washing ternary precursors, by separating the discharge opening of the centrifuge from the air supply port, closing the discharge opening during the feeding and washing processes, and installing a filtering device at the position of the air supply port, the centrifuge is in a good closed state during operation. The inlet and air supply sources enter the centrifuge after being purified by the filter element, preventing impurities and foreign objects in the air from being adsorbed by the induced draft fan and entering the material, which can reduce the content of foreign objects in the semi-finished products of the centrifugal washing process and improve the product cleanliness and production yield.

[0021] (2) For the foreign object prevention and control device at the discharge opening of the centrifuge for washing ternary precursors, by setting the limiting plate and the limiting groove, it is convenient to install the filter element. And when the filter element needs to be replaced, only need to unscrew the fixing cover and take out the filter element, which is simple to operate and improves the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0023] Figure 1 is a schematic structural diagram of a foreign object prevention and control device at the discharge opening of a centrifuge for washing ternary precursors of the present utility model;

[0024] Figure 2 is a schematic diagram of the internal structure of the centrifuge housing of the present utility model;

[0025] Figure 3 is a schematic diagram of a partial cross-sectional structure of the present utility model;

[0026] Figure 4 is a schematic diagram of the installation of the movable plug plate of the present utility model.

[0027] Reference numerals: 1, centrifuge support platform; 2, support column; 3, centrifuge housing; 4, waste gas pipe; 5, air outlet valve; 6, conical connecting pipe; 7, waste liquid pipe; 8, discharge pipe; 9, drum; 10, filter bag; 11, air supply pipe; 12, filter element slot; 13, limiting groove; 14, limiting plate; 15, fixing cover; 16, air inlet hole; 17, limiting ring; 18, valve ball; 19, rotating rod; 20, rotating disk; 21, plug plate slot; 22, movable plug plate; 23, sealing gasket; 24, rectangular hole; 25, filter element. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0030] In the description of the present utility model, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0031] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0032] Please refer to Figures 1-4 , the present utility model provides a technical solution: a foreign object prevention and control device for the discharge port of a centrifuge used for washing ternary precursors, including a centrifuge support platform 1. Support columns 2 are fixedly installed on both the left and right sides of the lower surface of the centrifuge support platform 1. A centrifuge housing 3 is inserted and fixedly installed at the horizontal middle position of the upper surface of the centrifuge support platform 1. The bottom end of the centrifuge housing 3 extends downward out of the lower surface of the centrifuge support platform 1;

[0033] Among them, an exhaust pipe 4 is inserted and fixedly installed on the left side of the outer surface of the centrifuge housing 3. The exhaust pipe 4 is communicated with the inside of the centrifuge housing 3, and an air outlet valve 5 is fixedly installed on the front side of the exhaust pipe 4;

[0034] Among them, a separation device is arranged inside the centrifuge housing 3;

[0035] Among them, a conical connecting pipe 6 is fixedly installed at the bottom end of the centrifuge housing 3. A waste liquid pipe 7 is inserted and fixedly installed on the left side of the outer surface of the conical connecting pipe 6;

[0036] Among them, a discharge pipe 8 is fixedly installed at the bottom end of the conical connecting pipe 6. A filtering device is arranged on the discharge pipe 8.

[0037] Further, the separation device includes a drum 9 which is rotatably installed at the inner bottom end of the centrifuge housing 3, and a filter bag 10 is fixedly sleeved on the outer side of the drum 9.

[0038] Further, the filtering device includes a supplementary air pipe 11 which is fixedly inserted and installed on the right outer surface of the discharge pipe 8. A filter element groove 12 is formed at the right inner end of the supplementary air pipe 11. Limiting grooves 13 are formed on both the upper and lower sides inside the filter element groove 12. Limiting plates 14 are slidably installed inside the two limiting grooves 13. A filter element 25 is fixedly installed on the opposite ends of the two limiting plates 14. The width of the filter element 25 is smaller than the depth of the filter element groove 12.

[0039] Further, a fixing cover 15 is threadedly connected to the right outer surface of the supplementary air pipe 11. An air inlet hole 16 is formed on the right surface of the fixing cover 15. A limiting ring 17 is fixedly installed on the left surface of the fixing cover 15 corresponding to the position of the air inlet hole 16. When using this device, by rotating the rotating disk 20, the valve ball 18 is driven to rotate inside the supplementary air pipe 11, thereby adjusting the amount of intake air. When installing the filter element 25, the limiting plates 14 on the upper and lower sides of the filter element 25 are slid into the two limiting grooves 13, and then the fixing cover 15 is pushed into the filter element groove 12. Subsequently, the fixing cover 15 is threadedly connected to the right end of the supplementary air pipe 11, so that one end of the limiting ring 17 away from the fixing cover 15 abuts against the right surface of the filter element 25, thereby completing the installation of the filter element 25. When the filter element needs to be replaced, just unscrew the fixing cover 15 and take out the filter element 25. Foreign matters in the air are effectively intercepted, further reducing the risk of foreign matter introduction in the semi-finished product of the centrifugal washing process and improving the product cleanliness and production yield.

[0040] Further, a valve ball 18 is rotatably installed at the left inner end of the supplementary air pipe 11. A rotating rod 19 is fixedly installed at the top of the valve ball 18. The top of the rotating rod 19 rotatably penetrates through the upper surface of the supplementary air pipe 11, and a rotating disk 20 is fixedly installed at the top of the rotating rod 19.

[0041] Further, an insertion plate groove 21 is formed on the front side of the bottom outer surface of the discharge pipe 8. An activity insertion plate 22 is slidably inserted into the insertion plate groove 21. A sealing gasket 23 is fixedly installed at the bottom of the activity insertion plate 22 corresponding to the position of the insertion plate groove 21. A rectangular hole 24 is formed at the front end of the activity insertion plate 22. By providing the insertion plate groove 21 and the activity insertion plate 22, the activity insertion plate 22 is in the installed state during the processes of feeding, washing, and solid-liquid separation. And by providing the sealing gasket 23, a good sealing state during the centrifugal washing process is maintained. Before blanking, the activity insertion plate 22 is pulled out of the insertion plate groove 21 for normal blanking, improving the practicability of the device.

[0042] Working principle: When using this device, by rotating the rotating disc 20, the valve ball 18 is driven to rotate inside the air supply pipe 11, thereby adjusting the air intake volume. When installing the filter element 25, the limiting plates 14 on the upper and lower sides of the filter element 25 are slid into the two limiting grooves 13, and then the fixing cover 15 is pushed into the filter element groove 12. Subsequently, the fixing cover 15 is threadedly connected to the right end of the air supply pipe 11, so that one end of the limiting ring 17 away from the fixing cover 15 abuts against the right surface of the filter element 25, thus completing the installation of the filter element 25. When the filter element needs to be replaced, just unscrew the fixing cover 15 and take out the filter element 25. Foreign matters in the air are effectively intercepted, further reducing the risk of foreign matter introduction in the semi-finished products of the centrifugal washing process, improving the product cleanliness and production yield. By setting the insertion plate groove 21 and the movable insertion plate 22, the movable insertion plate 22 is in the installed state during the processes of feeding, washing, and solid-liquid separation. And by setting the sealing gasket 23, a good sealing state is maintained during the centrifugal washing process. Before feeding, the movable insertion plate 22 is pulled out of the insertion plate groove 21 for normal feeding, improving the practicability of the device.

[0043] The above has described the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present utility model.

Claims

1. A device for preventing and controlling foreign matter at a centrifuge discharge port for washing a ternary precursor, comprising a centrifuge support platform (1), characterized in that: Support columns (2) are fixedly mounted on both left and right sides of the lower surface of the centrifuge support platform (1); a centrifuge casing (3) is plugged and fixedly mounted in the lateral middle position of the upper surface of the centrifuge support platform (1); the bottom end of the centrifuge casing (3) extends downwardly out of the lower surface of the centrifuge support platform (1); An exhaust pipe (4) is fixedly installed on the left side of the outer surface of the centrifuge casing (3), the exhaust pipe (4) is connected to the interior of the centrifuge casing (3), and an exhaust valve (5) is fixedly installed on the front side of the exhaust pipe (4); Wherein, a separation device is arranged inside the centrifuge casing (3); Wherein, a conical connecting pipe (6) is fixedly installed at the bottom end of the centrifuge casing (3), and a waste liquid pipe (7) is plugged and fixedly installed on the left side of the outer surface of the conical connecting pipe (6); Wherein, a discharge pipe (8) is fixedly mounted at the bottom end of the conical connecting pipe (6), and a filtering device is arranged on the discharge pipe (8).

2. According to claim 1, a foreign body prevention and control device for a centrifuge discharge port for washing a ternary precursor, characterized in that: The separation device comprises a rotary drum (9), which is rotatably mounted on the inner bottom end of a centrifuge casing (3), and a filter bag (10) is fixedly mounted on the outer side of the rotary drum (9).

3. The device for preventing and controlling foreign matter at the feed port of a centrifuge for washing a ternary precursor according to claim 1, characterized in that: The filtering device comprises an air supply pipe (11), which is plugged and fixedly installed on the right side of the outer surface of the discharge pipe (8), and a filter element groove (12) is provided at the right end of the inside of the air supply pipe (11), and limiting grooves (13) are provided on the upper and lower sides of the inside of the filter element groove (12), and limiting plates (14) are slidably installed inside the two limiting grooves (13), and filter elements (25) are fixedly installed on the opposite ends of the two limiting plates (14), and the width of the filter element (25) is smaller than the depth of the filter element groove (12).

4. The device for preventing and controlling foreign matter at the feed port of a centrifuge for washing a ternary precursor according to claim 3, characterized in that: The outer surface of the right end of the air supply pipe (11) is threadedly connected to a fixing cover (15), an air inlet hole (16) is provided on the right surface of the fixing cover (15), and a limiting ring (17) is fixedly installed on the left surface of the fixing cover (15) at a position corresponding to the air inlet hole (16).

5. The device for preventing and controlling foreign matter at the discharge port of a centrifuge for washing a ternary precursor according to claim 3, characterized in that: A valve ball (18) is rotatably mounted on the left inner end of the air supply pipe (11), a rotating rod (19) is fixedly mounted on the top end of the valve ball (18), the top end of the rotating rod (19) rotates through the upper surface of the air supply pipe (11), and a rotating disk (20) is fixedly mounted on the top end of the rotating rod (19).

6. The device for preventing and controlling foreign matter at the discharge port of a centrifuge for washing a ternary precursor according to claim 1, characterized in that: A plug plate groove (21) is provided at the front side of the bottom end of the outer surface of the discharge pipe (8), a movable plug plate (22) is inserted and slidably installed inside the plug plate groove (21), a sealing gasket (23) is fixedly installed at the bottom end of the movable plug plate (22) at a position corresponding to the plug plate groove (21), and a rectangular hole (24) is provided at the front end of the movable plug plate (22).

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