Continuous preparation device of high-tap-density low-impurity iron phosphate

Abstract

The invention relates to the field of iron phosphate, in particular to a high-tap-density low-impurity iron phosphate continuous preparation device which comprises a base, an electric turntable, a collecting hopper, a feeding stirrer, a press filter and the like. The base is rotationally connected with an electric turntable; five notches are formed in the electric turntable; the base is fixedly connected with a collecting hopper; the base is fixedly connected with a feeding stirrer, and the feeding stirrer is positioned above one of the notches; the base is fixedly connected with a press filter, and the press filter is positioned above the corresponding notch; the device further comprises an electric roller; and two electric rollers are connected in each notch. In the leaching process, an electric push rod I is controlled to enable a circular plate to drive a push block to move upwards, the push block pushes a filter cake on a filter plate upwards, at the moment, the push block is separated from a liquid discharge hole, leacheate can rapidly flow downwards to the circular plate from the liquid discharge hole after penetrating through the filter cake, and finally is discharged downwards from a through hole, and the leaching efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of ferric phosphate, and more particularly to a continuous preparation apparatus for ferric phosphate with high tap density and low impurities. Background Technology

[0002] In the preparation process of ferric phosphate, a solvent needs to be added to the ferric phosphate raw material to dissolve the impurities in the raw material. Then, a filter press is used to press and filter the ferric phosphate raw material. After pressing and filtration, the filter cake needs to be washed to remove the residual solvent. However, because the filter cloth is dense and the filter cake is tightly attached to the filter cloth, the washing liquid is difficult to penetrate the filter cake for washing in a short time. The washing waiting time is long, which affects the overall preparation efficiency. Summary of the Invention

[0003] To overcome the shortcomings of the rinsing solution's inability to penetrate the filter cake in a short time and the long rinsing waiting time, which affects the overall preparation efficiency, this invention provides a continuous preparation device for high tap density and low impurity iron phosphate.

[0004] The technical solution of this invention is as follows: a continuous preparation device for high tap density and low impurity ferric phosphate, comprising a base, an electric turntable, a collecting hopper, a feeding agitator, a filter press, a scrubbing device, and a conveyor belt; the electric turntable is rotatably connected to the base; the electric turntable has five notches; the collecting hopper is fixedly connected to the base; the feeding agitator is fixedly connected to the base, and the feeding agitator is located above one of the notches; the filter press is fixedly connected to the base, and the filter press is located above the corresponding notch; the scrubbing device is fixedly connected to the base, and the scrubbing device is located above one notch; the conveyor belt is fixedly connected to the base, and the conveyor belt is located below one notch. It also includes electric rollers; two electric rollers are connected to each notch; each of the two electric rollers in the same notch is fixedly connected to a support ring; each support ring is fixedly connected to a filter plate; each filter plate has several drainage holes; each support ring is fixedly connected to a fixing plate; each fixing plate is fixedly connected to an electric push rod I; each extension end of each electric push rod I is fixedly connected to a circular plate, and the circular plate is slidably connected to the corresponding support ring, and the circular plate is located below the filter plate; each circular plate has several through holes; each circular plate is fixedly connected to several push blocks located in the corresponding drainage holes.

[0005] More preferably, it also includes a support plate; the base is fixed to two support plates, and the support plates are located below the corresponding filter press.

[0006] More preferably, it also includes an electric push rod II, a connecting pipe, a hollow pipe, and a plug; the electric push rod II is fixedly connected to the base; the telescopic end of the electric push rod II is fixedly connected to the connecting pipe, and the connecting pipe is located below the corresponding support ring; each fixed plate is slidably connected to a hollow pipe, and the hollow pipe is fixedly connected to the circular plate, and the hollow pipe is located directly above the connecting pipe; several plugs located directly above the corresponding through holes are fixedly connected to the lower side of each filter plate; there are two filter presses, and the scrubber is located between the two filter presses.

[0007] More preferably, the surface of the block is roughened.

[0008] More preferably, the drain hole is designed with a lower center and higher edges.

[0009] More preferably, the upper surface of the push block is smooth.

[0010] More preferably, the support ring is made of alloy material.

[0011] More preferably, the support ring is hollow and has several round holes, and the bottom of the support ring has several liquid outlet holes.

[0012] More preferably, a filter screen is installed in each of the holes.

[0013] More preferably, the upper part of the support ring is shaped like a frustum, narrow at the bottom and wide at the top.

[0014] Beneficial effects: During the rinsing process, the present invention controls the electric push rod I to move the circular plate and push block upward, so that the push block pushes the filter cake on the filter plate upward. At this time, the push block disengages from the drain hole, and the rinsing liquid can quickly flow down from the drain hole onto the circular plate after penetrating the filter cake, and finally be discharged downward from the through hole, thus accelerating the rinsing efficiency. At the same time, after the push block pushes the filter cake upward, it causes relative movement between the filter cake, the support ring and the filter plate, which breaks the negative pressure formed between the filter cake and the inner side of the support ring, so that the filter cake, the support ring and the filter plate are pre-separated, which facilitates the subsequent demolding.

[0015] This invention controls an electric push rod II to move the connecting pipe upwards, allowing the connecting pipe to be inserted into the bottom of the hollow tube to form a connection. Then, an external pump is controlled to deliver phosphoric acid solution to the hollow tube through the connecting pipe. After the phosphoric acid solution flows upwards and soaks the filter cake, it reduces surface defects of the filter cake. Since the push block has already pushed the filter cake upwards at this time, the push block is separated from the drain hole, making it easier for the phosphoric acid solution to seep upwards through the drain hole to cover the filter cake, thus improving the soaking effect.

[0016] The present invention makes the upper half of the support ring into a frustum shape that is narrow at the bottom and wide at the top, thereby reducing the frictional adhesion between the filter cake and the support ring when the pusher pushes the filter cake upward, making it easier for the filter cake to come off the inside of the support ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the continuous preparation apparatus for high tap density and low impurity iron phosphate of the present invention.

[0018] Figure 2 This is a partial structural diagram of the combination of the base, electric turntable, collection hopper and support ring disclosed in this invention;

[0019] Figure 3 This is a partial structural diagram of the combination of the electric turntable, electric roller, support ring, and filter plate disclosed in this invention.

[0020] Figure 4 This is a cross-sectional view of the combination of the support ring, filter plate, and circular plate disclosed in this invention;

[0021] Figure 5 This is a diagram showing the upward movement of the circular plate and pusher block as disclosed in this invention.

[0022] Figure 6 This is a diagram showing the downward movement of the circular plate and pusher block as disclosed in this invention.

[0023] The markings in the diagram are as follows: 1-base, 2-electric turntable, 3-collecting hopper, 4-feeding agitator, 5-filter press, 6-washer, 7-conveyor belt, 101-electric roller, 102-support ring, 103-filter plate, 104-fixed plate, 105-electric push rod I, 106-circular plate, 107-push block, 108-support plate, 109-electric push rod II, 1010-connecting pipe, 1011-hollow pipe, 1012-blocking block, 201-filter screen, 20-notch, 21-circular hole, 22-liquid outlet hole, 31-drain hole, 61-through hole. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0025] Example 1

[0026] A continuous preparation apparatus for high tap density and low impurity iron phosphate, such as... Figures 1-6 As shown, the system includes a base 1, an electric turntable 2, a collection hopper 3, a feeding agitator 4, a filter press 5, a scrubber 6, and a conveyor belt 7. The base 1 is rotatably connected to the electric turntable 2. The electric turntable 2 has five notches 20. The collection hopper 3 is fixedly connected to the base 1. The feeding agitator 4 is fixedly connected to the base 1, and the feeding agitator 4 is located above one of the notches 20. The filter press 5 is fixedly connected to the base 1, and the filter press 5 is located above the corresponding notch 20. The scrubber 6 is fixedly connected to the base 1, and the scrubber 6 is located above one of the notches 20. The conveyor belt 7 is fixedly connected to the base 1, and the conveyor belt 7 is located below one of the notches 20.

[0027] It also includes an electric roller 101, a support ring 102, a filter plate 103, a fixing plate 104, an electric push rod I 105, a circular plate 106, and a push block 107; each notch 20 is connected to two electric rollers 101; each of the two electric rollers 101 in the same notch 20 is fixedly connected to a support ring 102; each support ring 102 is fixedly connected to a filter plate 103; each filter plate 103 has several drainage holes 31; each support ring 102 is fixedly connected to a filter plate 103. A fixed plate 104 is connected to each fixed plate 104; each fixed plate 104 is fixedly connected to an electric push rod I 105; each electric push rod I 105 is fixedly connected to a circular plate 106 at its telescopic end, and the circular plate 106 is slidably connected to the corresponding support ring 102, and the circular plate 106 is located below the filter plate 103; each circular plate 106 has several through holes 61; each circular plate 106 is fixedly connected to several push blocks 107, and the push blocks 107 are located in the corresponding drain holes 31.

[0028] It also includes a support plate 108; the base 1 is fixedly connected to two support plates 108, and the support plates 108 are located below the corresponding filter press 5.

[0029] It also includes an electric push rod II 109, a connecting pipe 1010, a hollow pipe 1011, and a block 1012; the base 1 is bolted to the electric push rod II 109; the telescopic end of the electric push rod II 109 is fixedly connected to the connecting pipe 1010, and the connecting pipe 1010 is located below the corresponding support ring 102; each fixed plate 104 is slidably connected to a hollow pipe 1011, and the hollow pipe 1011 is fixedly connected to the circular plate 106, and the hollow pipe 1011 is located directly above the connecting pipe 1010; each filter plate 103 has several blocks 1012 fixedly connected to its lower side, and the blocks 1012 are located directly above the corresponding through hole 61; there are two filter presses 5, and the scrubber 6 is located between the two filter presses 5.

[0030] The surface of the plug 1012 is roughened to increase the friction between the plug 1012 and the inner wall of the through hole 61, thereby improving the sealing performance between the plug 1012 and the inner wall of the through hole 61.

[0031] The drain hole 31 is designed with a lower center and higher edges to guide the rinsing liquid entering the drain hole 31 downwards, reducing the residue of rinsing liquid in the drain hole 31.

[0032] The upper surface of the pusher block 107 is smooth, which reduces the frictional adhesion between the pusher block 107 and the filter cake, making it easier for the filter cake to separate from the upper surface of the pusher block 107 during demolding.

[0033] The support ring 102 is made of alloy material, which improves the corrosion resistance of the support ring 102 and thus extends its service life.

[0034] In use, first connect the external pump to the connecting pipe 1010, connect the material pipe to the inlet of the feeding agitator 4, and connect the liquid pump for conveying the washing liquid to the pipe inlet of the washer 6. Initially, to ensure the integrity of the filter cake, the upper surface of the pusher block 107 is flush with the upper side of the filter plate 103. Figure 4 As shown, the pretreated ferric phosphate raw material is then added to the feed inlet of the feed agitator 4 via the material pipe. Subsequently, the feed agitator 4 is controlled to feed the raw material and liquid reaction solvent onto the filter plate 103 of the lower support ring 102. The feed agitator 4 is then controlled to rapidly stir the raw material and reaction solvent, so that the reaction solvent and ferric phosphate raw material are uniformly mixed. The reaction solvent dissolves the impurities in the raw material. Then, the electric turntable 2 is controlled to drive all the support rings 102 to rotate counterclockwise by 72 degrees around their central axis, so that the support rings 102 containing the raw material rotate to be directly below the filter press 5. At this time, another new support ring 102 is located directly below the feed agitator 4. Then, the extrusion head of the filter press 5 is controlled to move downward to extrude the raw material in the support ring 102, squeezing out the reaction solvent liquid in the raw material. After being filtered by the filter plate 103, the solvent liquid is then discharged downward into the collection hopper 3 for collection.

[0035] After the pressing is completed, the electric turntable 2 continues to drive all the support rings 102 to rotate counterclockwise by 72 degrees around their central axis, so that the support rings 102 that have completed the pressing and filtration rotate to be directly below the scrubber 6. Then, the scrubber 6 is controlled to spray the filtered raw material inside the support rings 102 downwards. The scrubber covers the filter cake on the filter plate 103 and gradually penetrates downwards into the filter cake, thereby washing away the reaction solvent remaining in the filter cake. After the scrubber penetrates the filter cake, it is filtered by the filter plate 103 and then discharged downwards into the collection hopper 3 for collection.

[0036] During the rinsing process, the electric push rod I105 is controlled to move the circular plate 106 upward, causing the push block 107 to push the filter cake on the filter plate 103 upward. At this time, the push block 107 disengages from the drain hole 31, and the rinsing liquid, after penetrating the filter cake, can quickly flow downward from the drain hole 31 onto the circular plate 106, and finally be discharged downward from the through hole 61, thus accelerating the rinsing efficiency. Figure 5 As shown, the pusher 107 pushes the filter cake upward, causing relative movement between the filter cake, the support ring 102, and the filter plate 103. This breaks the negative pressure formed between the filter cake and the inner side of the support ring 102, allowing the filter cake, support ring 102, and filter plate 103 to be pre-separated, facilitating subsequent demolding.

[0037] Considering that the filter cake remains adhered to the pusher block 107, preventing the rinsing liquid from covering the entire area of ​​the filter cake, to solve this problem, during the rinsing process, the electric pusher rod I 105 is controlled to move the circular plate 106 downwards, causing the pusher block 107 to separate from the filter cake. Figure 6As shown, by alternately controlling the electric push rod I105, the circular plate 106 drives the push block 107 to move, so that the washing liquid fully covers the filter cake, further improving the washing effect, and facilitating the subsequent demolding process.

[0038] Considering that during the spraying process, the rinsing liquid flowing through the filter cake can cause surface defects such as cracks and grooves, reducing the quality of the filter cake, after rinsing, the electric push rod I 105 is first controlled to move the circular plate 106 and the push block 107 upwards, so that the filter plate 103 and the circular plate 106 are completely in contact. At this time, the blocking block 1012 blocks the through hole 61. Then, the electric push rod II 109 is controlled to move the connecting pipe 1010 upwards, so that the connecting pipe 1010 is inserted into the bottom of the hollow pipe 1011 to form a connection. Next, the external pump is controlled to deliver phosphoric acid solution to the hollow tube 1011 through the connecting pipe 1010. After the phosphoric acid solution flows upward over the filter cake, the filter cake is soaked in the phosphoric acid solution to reduce the surface defects of the filter cake. Since the plug 1012 has blocked the through hole 61, the phosphoric acid solution will not flow downward from the through hole 61. At this time, since the push block 107 has pushed the filter cake upward, the push block 107 is separated from the drain hole 31, making it easier for the phosphoric acid solution to seep upward through the drain hole 31 to cover the filter cake and improve the soaking effect.

[0039] After rinsing and soaking, the electric turntable 2 is controlled to rotate all the support rings 102 counterclockwise by 72 degrees around their central axis, so that the soaked support rings 102 are rotated directly below another filter press 5. Then, the filter press 5 is controlled to squeeze the raw material in the support rings 102 downwards, and the raw material is squeezed a second time to squeeze out the soaking liquid. The electric turntable 2 is controlled to rotate all the support rings 102 counterclockwise by 72 degrees around their central axis, so that the squeezed filter cake is above the conveyor belt 7. Then, the electric roller 101 is controlled to drive the support rings 102 and the filter cake to flip downwards, so that the filter cake falls off the support rings 102 under its own gravity and falls onto the conveyor belt 7 for collection, completing the demolding process.

[0040] When the support ring 102 moves below the filter press 5, the support ring 102 contacts the upper side of the support plate 108. Then, when the filter press 5 moves downward to squeeze the filter cake in the support ring 102, the support plate 108 supports the lower side of the support ring 102, increasing the force-bearing area of ​​the support ring 102 and preventing damage from relying solely on the electric roller 101.

[0041] Example 2, based on Example 1, such as Figure 4 As shown, the support ring 102 is hollow, and several round holes 21 are opened on the inner side of the support ring 102, and several liquid outlet holes 22 are opened at the bottom of the support ring 102.

[0042] Each circular hole 21 contains a filter screen 201.

[0043] The upper part of the support ring 102 is a frustum shape that is narrow at the bottom and wide at the top.

[0044] By providing a circular hole 21 and a liquid outlet hole 22 on the support ring 102, during the rinsing process, after the rinsing liquid permeates the filter cake, part of the rinsing liquid enters the hollow support ring 102 through the circular hole 21 and is finally discharged downwards through the liquid outlet hole 22, which further accelerates the discharge efficiency of the rinsing liquid after it permeates the filter cake and facilitates the discharge of filtrate during the pressure filtration process.

[0045] To prevent the raw material from flowing away with the filtrate through the round hole 21 during the pressure filtration process, resulting in waste, a filter screen 201 is installed inside the round hole 21 to intercept and block the raw material, thereby reducing the loss and waste of the raw material.

[0046] By making the upper half of the support ring 102 into a frustum shape that is narrow at the bottom and wide at the top, the frictional adhesion between the filter cake and the support ring 102 is reduced when the pusher block 107 pushes the filter cake upward, making it easier for the filter cake to come out from the inside of the support ring 102.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A continuous preparation apparatus for high tap density and low impurity ferric phosphate, comprising a base (1), an electric turntable (2), a collection hopper (3), a feeding agitator (4), a filter press (5), a scrubber (6), and a conveyor belt (7); the base (1) is rotatably connected to the electric turntable (2); the electric turntable (2) has five notches (20); the base (1) is fixedly connected to the collection hopper (3); the base (1) is fixedly connected to the feeding agitator (4), and the feeding agitator (4) is located above one of the notches (20); the base (1) is fixedly connected to the filter press (5), and the filter press (5) is located above the corresponding notch (20); the base (1) is fixedly connected to the scrubber (6), and the scrubber (6) is located above one notch (20); the base (1) is fixedly connected to the conveyor belt (7), and the conveyor belt (7) is located below one notch (20); characterized in that: It also includes an electric roller (101); two electric rollers (101) are connected in each notch (20); the two electric rollers (101) in the same notch (20) are each fixedly connected to a support ring (102); each support ring (102) is fixedly connected to a filter plate (103); each filter plate (103) has several drainage holes (31); each support ring (102) is fixedly connected to a fixing plate (104); each fixing plate (104) is fixedly connected to a filter plate (105). 04) Each is fixed with an electric push rod I (105); each electric push rod I (105) has a circular plate (106) fixed at its telescopic end, and the circular plate (106) is slidably connected to the corresponding support ring (102), and the circular plate (106) is located below the filter plate (103); each circular plate (106) has several through holes (61); each circular plate (106) has several push blocks (107) fixed in the corresponding drain hole (31).

2. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: It also includes a support plate (108); the base (1) is fixed with two support plates (108), and the support plates (108) are located below the corresponding filter press (5).

3. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: It also includes an electric push rod II (109), a connecting pipe (1010), a hollow pipe (1011), and a block (1012); the base (1) is fixedly connected to the electric push rod II (109); the telescopic end of the electric push rod II (109) is fixedly connected to the connecting pipe (1010), and the connecting pipe (1010) is located below the corresponding support ring (102); each fixed plate (104) is slidably connected to a hollow pipe (1011), and the hollow pipe (1011) is fixedly connected to the circular plate (106), and the hollow pipe (1011) is located directly above the connecting pipe (1010); each filter plate (103) has several blocks (1012) fixedly connected to the lower side, located directly above the corresponding through hole (61); there are two filter presses (5), and the scrubber (6) is located between the two filter presses (5).

4. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 3, characterized in that: The surface of the block (1012) is roughened.

5. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: The drain hole (31) is set with a low center and a high perimeter.

6. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: The upper surface of the push block (107) is smooth.

7. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: The support ring (102) is made of alloy material.

8. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 1, characterized in that: The support ring (102) is hollow and has several round holes (21) and several liquid outlet holes (22) at the bottom.

9. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 8, characterized in that: Each hole (21) contains a filter screen (201).

10. The continuous preparation apparatus for high tap density and low impurity iron phosphate according to claim 9, characterized in that: The upper part of the support ring (102) is a frustum shape that is narrow at the bottom and wide at the top.

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