Efficient phosphate impurity removal device

Abstract

The utility model provides an efficient phosphate impurity removal device, relates to the technical field of solid-liquid separation equipment, and solves the problems that an existing phosphate filtering device is poor in filtering effect and a filtering assembly is easy to block. The device comprises a filtering kettle body, a heating filtering assembly arranged in the middle of the filtering kettle body, and a temperature controller and an alarm module which are arranged on the outer wall of the filtering kettle body, the heating and filtering assembly comprises an upper filtering plate, a lower filtering plate and an electric heating wire, a lower filtering plate frame is fixedly arranged on the peripheral wall of the lower filtering plate, an upper filtering plate frame is fixedly arranged on the peripheral wall of the upper filtering plate, and the upper filtering plate frame is detachably mounted on the lower filtering plate frame through matching of a convex ring and a groove; an interlayer for placing an electric heating wire is formed between the upper filter plate and the upper filter plate frame and between the lower filter plate and the lower filter plate frame; and a temperature sensor is arranged on the inner side wall of the interlayer. The filter has the beneficial effects that the filtering effect is ensured, the filter plate cannot be blocked, and the filter can be repeatedly used and does not need to be frequently cleaned and replaced.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation equipment technology, specifically to a high-efficiency phosphate removal device. Background Technology

[0002] Phosphate slag is a byproduct of lithium iron phosphate battery powder recycling and contains various impurities. Currently, separating phosphate from phosphate slag is difficult, making it hard to guarantee the purity of the finished phosphate product. In the filtration stage of the wet recycling reaction of phosphate slag, because phosphate dissolves in water at high temperatures (90℃) and crystallizes at low temperatures, the decrease in temperature during filtration causes phosphate crystallization, clogging the filter cloth pores and affecting filtration efficiency. Utility Model Content

[0003] The purpose of this invention is to solve the problems of poor filtration effect and easy clogging of filter components in existing phosphate filtration devices.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-efficiency phosphate removal device, characterized in that it includes a filter body, a heating and filtration assembly disposed in the middle of the filter body, and a temperature controller and alarm module disposed on the outer wall of the filter body;

[0006] The heating and filtering assembly includes an upper filter plate, a lower filter plate, and a heating wire. A lower filter plate frame is fixedly installed on the outer peripheral wall of the lower filter plate. A groove is provided on the upper surface of the lower filter plate frame. An upper filter plate frame is fixedly installed on the outer peripheral wall of the upper filter plate. A convex ring corresponding to the groove is provided on the lower surface of the upper filter plate frame. The upper filter plate frame is detachably installed on the lower filter plate frame through the cooperation of the convex ring and the groove. An interlayer for placing the heating wire is formed between the upper filter plate, the upper filter plate frame, the lower filter plate, and the lower filter plate frame. A temperature sensor is provided on the inner side wall of the interlayer.

[0007] A further improvement is that the temperature controller is electrically connected to the temperature sensor, heating wire, and alarm module via wires.

[0008] A further improvement is that the alarm module includes a buzzer and a flashing light.

[0009] A further improvement is that the groove and the convex ring are respectively provided with wire holes for wires to pass through, and the wire holes are filled with sealant after the wires pass through.

[0010] A further improvement is that the surfaces of the upper filter plate, the lower filter plate, the upper filter plate frame, and the lower filter plate frame are all covered with a high-temperature resistant layer.

[0011] A further improvement is that the high-temperature resistant layer is a polytetrafluoroethylene layer.

[0012] A further improvement is that the upper and lower filter plates are both provided with a number of annularly distributed filter holes that run vertically through each other.

[0013] A further improvement is that the heating wire is a ring-shaped heating wire, and the ring-shaped heating wire does not block the filter holes.

[0014] A further improvement is that the upper end of the filter vessel is provided with a lid, the lid is connected to a feed pipe, and the bottom of the filter vessel is connected to a discharge pipe.

[0015] A further improvement is that an installation ring platform is installed on the inner wall of the middle part of the filter body, and the lower filter plate frame is set on the installation ring platform.

[0016] Compared with existing technologies, the above technical solution has the following advantages:

[0017] Heating is achieved by controlling the heating wire with a temperature controller. The heating temperature is 90℃. The slurry to be filtered is heated to 90℃ and kept warm before filtration. Because phosphate dissolves in water at high temperatures (90℃), no crystals will precipitate at this temperature. Therefore, the filter pores on the filter plate will not be blocked during filtration. This allows the filter assembly to be reused without frequent cleaning and replacement of the filter plate.

[0018] By using a temperature controller and temperature sensor, the heating temperature can be monitored and adjusted in real time to prevent temperature drops from affecting the filtration effect. A buzzer and flashing light provide an alarm when the temperature decreases. The upper and lower filter plates are detachable via protruding rings and grooves, facilitating repair and replacement in case of malfunctions in the heating wire or sensor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional exploded view of the heating and filtering component in this utility model;

[0022] Figure 3 This is a front sectional exploded view of the heating and filtering assembly in this utility model;

[0023] Figure 4 This is a bottom view of the upper filter plate in this utility model;

[0024] Figure 5 This is a top view of the lower filter plate in this utility model.

[0025] Figure 6 This is a top view of the heating wire in this utility model.

[0026] Figure 7 This is a schematic diagram of the circuit principle structure of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Filter body; 2. Cover; 3. Feed pipe; 4. Discharge pipe; 5. Mounting ring; 6. Heating and filtering assembly; 7. Temperature controller; 8. Alarm module; 61. Upper filter plate; 62. Lower filter plate; 63. Filter hole; 64. Upper filter plate frame; 641. Protruding ring; 65. Lower filter plate frame; 65. Groove; 651. Wire hole; 66. Heating wire; 67. Wire; 68. Temperature sensor; 69. Detailed Implementation

[0028] See Figures 1-7 As shown, the technical solution adopted in this specific embodiment is: a high-efficiency phosphate removal device, characterized in that: it includes a filter body 1, a heating and filtering component 6 disposed in the middle of the filter body 1, a temperature controller 7 disposed on the outer wall of the filter body 1, and an alarm module 8.

[0029] The heating and filtering assembly 6 includes an upper filter plate 61, a lower filter plate 62, and a heating wire 67. A lower filter plate frame 65 is fixedly disposed on the outer peripheral wall of the lower filter plate 62. A groove 651 is provided on the upper surface of the lower filter plate frame 65. An upper filter plate frame 64 is fixedly disposed on the outer peripheral wall of the upper filter plate 61. A protruding ring 641 corresponding to the groove 651 is provided on the lower surface of the upper filter plate frame 64. The upper filter plate frame 64 is detachably mounted on the lower filter plate frame 65 through the cooperation of the protruding ring 641 and the groove 651. An interlayer for placing the heating wire 67 is formed between the upper filter plate 61, the upper filter plate frame 64 and the lower filter plate 62, and the lower filter plate frame 65. A temperature sensor 69 is disposed on the inner side wall of the interlayer.

[0030] The temperature controller 7 is electrically connected to the temperature sensor 69, the heating wire 67, and the alarm module 8 via wires 6. The temperature controller 7 is a temperature controller with a display screen.

[0031] The alarm module 8 includes a buzzer and a flashing light.

[0032] The groove 651 and the convex ring 641 are respectively provided with wire holes 66 for the wire 68 to pass through, and the wire holes 66 are filled with sealant after the wire 68 passes through.

[0033] The surfaces of the upper filter plate 61, the lower filter plate 62, the upper filter plate frame 64, and the lower filter plate frame 65 are all covered with a high-temperature resistant layer.

[0034] The high-temperature resistant layer is a polytetrafluoroethylene layer.

[0035] The upper filter plate 61 and the lower filter plate 62 are both provided with a number of annularly distributed filter holes 63 that run vertically through each other.

[0036] The heating wire 67 is a ring-shaped heating wire, and the ring-shaped heating wire does not block the filter hole 63.

[0037] The filter vessel 1 is provided with a lid 2 at the upper end, and a feed pipe 3 is connected to the lid 2. The filter vessel 1 is also provided with a discharge pipe 4 at the bottom.

[0038] The filter vessel 1 has an installation ring platform 5 installed on its inner wall, and the lower filter plate frame 65 is mounted on the installation ring platform 5.

[0039] The steps of the wet recovery reaction of ferrophosphorus slag:

[0040] 1. Add 1000 kg of phosphorus iron slag to the slurry mixing tank through the conveying system, mix it with water at a ratio of 1:1, and stir at a stirring speed of 120 rpm to 150 rpm. Prepare the slurry for later use.

[0041] 2. The prepared slurry is pumped into the reactor through a slurry pump, heated to 90°C, and stirred.

[0042] 3. After the temperature is uniform and stable, slowly add 480 kg of sodium hydroxide solid and a small amount of PMA coagulant (10 kg per reactor).

[0043] 4. Maintain the temperature, stir the reaction for 1 hour, then filter and retain the filtrate. During this process, the main reaction is:

[0044]

[0045] 5. Wait for the filtrate to cool and for trisodium phosphate to crystallize out.

[0046] The working principle of this invention is as follows: This technology is used in the filtration stage after stirring and reacting for 1 hour in the fourth step of the above-mentioned wet recovery reaction process of phosphorus iron slag. During use, the slurry enters the reactor and falls into the heating and filtration device for filtration. The heating element is controlled by a temperature controller to maintain a temperature of 90℃. The slurry to be filtered is heated to 90℃ and then kept warm during filtration. Because phosphate dissolves in water at high temperatures (90℃), no crystallization occurs, preventing clogging of the filter pores on the filter plate. This allows for the reuse of the filter assembly without frequent cleaning and replacement of the filter plates. The temperature controller, in conjunction with a temperature sensor, can monitor and adjust the heating temperature in real time to prevent temperature drops from affecting the filtration effect. A buzzer and flashing light provide an alarm when the temperature decreases. The upper and lower filter plates are detachable via a convex ring and groove, facilitating maintenance and replacement in case of malfunctions in the heating element or sensor.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A high-efficiency phosphate removal device, characterized in that: It includes a filter body, a heating and filtration assembly located in the middle of the filter body, and a temperature controller and alarm module located on the outer wall of the filter body. The heating and filtering assembly includes an upper filter plate, a lower filter plate, and a heating wire. A lower filter plate frame is fixedly installed on the outer peripheral wall of the lower filter plate. A groove is provided on the upper surface of the lower filter plate frame. An upper filter plate frame is fixedly installed on the outer peripheral wall of the upper filter plate. A convex ring corresponding to the groove is provided on the lower surface of the upper filter plate frame. The upper filter plate frame is detachably installed on the lower filter plate frame through the cooperation of the convex ring and the groove. An interlayer for placing the heating wire is formed between the upper filter plate, the upper filter plate frame, the lower filter plate, and the lower filter plate frame. A temperature sensor is provided on the inner side wall of the interlayer.

2. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: The temperature controller is electrically connected to the temperature sensor, heating wire, and alarm module via wires.

3. The phosphate high-efficiency impurity removal device according to claim 2, characterized in that: The alarm module includes a buzzer and a flashing light.

4. The phosphate high-efficiency impurity removal device according to claim 2, characterized in that: Corresponding wire holes are provided on the groove and the convex ring for the wires to pass through, and the wire holes are filled with sealant after the wires pass through.

5. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: The surfaces of the upper filter plate, the lower filter plate, the upper filter plate frame, and the lower filter plate frame are all covered with a high-temperature resistant layer.

6. The phosphate high-efficiency impurity removal device according to claim 5, characterized in that: The high-temperature resistant layer is a polytetrafluoroethylene layer.

7. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: The upper and lower filter plates are both perforated with a number of evenly distributed annular filter holes.

8. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: The heating wire is a ring-shaped heating wire, and the ring-shaped heating wire does not block the filter holes.

9. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: The filter vessel is equipped with a lid at the top, and a feed pipe is connected to the lid. The filter vessel is also equipped with a discharge pipe at the bottom.

10. The phosphate high-efficiency impurity removal device according to claim 1, characterized in that: An installation ring platform is installed on the inner wall of the middle part of the filter body, and the lower filter plate frame is set on the installation ring platform.

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