A lithium phosphate precipitation device for concentrating mother liquor recovery

Abstract

The present application relates to the technical fields of concentrated mother liquor recovery, and particularly relates to a lithium phosphate precipitation device for concentrated mother liquor recovery, which comprises a mounting seat, a wrapping box, a reaction kettle and a feeding pipe, etc., the mounting seat is connected with the wrapping box, the wrapping box is connected with the reaction kettle, and the reaction kettle is connected with the feeding pipe at the top. The concentrated mother liquor and lithium phosphate can be sucked into the tank by the first water pump, the large particles of lithium phosphate are preliminarily precipitated in the tank to separate the concentrated mother liquor and lithium phosphate, the concentrated mother liquor and small particles of lithium phosphate can be sucked into the precipitation box by the second water pump, the small particles of lithium phosphate are precipitated in the precipitation box, the concentrated mother liquor and large particles of lithium phosphate have been preliminarily separated in the tank, a small amount of lithium phosphate can be naturally settled faster, the time of precipitation and separation can be shortened, the rapid precipitation and separation of lithium phosphate can be realized, and the recovery efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concentrated mother liquor recovery, and particularly relates to a lithium phosphate precipitation device for concentrated mother liquor recovery. BACKGROUND

[0002] Lithium phosphate precipitation is an effective method for recovering lithium ions from concentrated mother liquor, especially when dealing with industrial wastewater or mineral leaching solution containing lithium. This method is based on the principle of chemical precipitation, which precipitates lithium in the form of lithium phosphate by adjusting the solution conditions, thereby realizing the recovery of lithium.

[0003] At present, most of the precipitation devices still use the traditional single precipitation process structure. After the reaction, the lithium phosphate in the precipitation tank relies on gravity to settle naturally. The precipitation separation process takes a long time, and it still needs to be left for a long time to complete the separation of the concentrated mother liquor and the lithium phosphate. It cannot realize rapid precipitation separation, which affects the recovery efficiency. In the large-scale production scene, this slow precipitation method cannot meet the efficient production demand, which limits the improvement of the overall recovery efficiency. SUMMARY

[0004] Therefore, the present application provides a lithium phosphate precipitation device for concentrated mother liquor recovery, which can overcome the shortcomings of relying on gravity to settle naturally, long precipitation separation process, long time left to complete the separation of the concentrated mother liquor and the lithium phosphate, and the inability to realize rapid precipitation separation, which affects the recovery efficiency.

[0005] The technical scheme of the present application is as follows: a lithium phosphate precipitation device for concentrated mother liquor recovery, comprising a mounting seat, a wrapping box, a reaction kettle, a feed pipe, a mounting frame, a precipitation tank, a first discharge pipe, a first valve, an annular plate, a blocking ring, a separation mechanism, a heating mechanism, a stirring mechanism and a drainage mechanism. The wrapping box is connected to the mounting seat, and the reaction kettle is connected in the wrapping box. The feed pipe is connected to the top of the reaction kettle. The mounting frame is connected to the mounting seat, and the precipitation tank is connected to the top of the mounting frame. The first discharge pipe is connected to the bottom of the precipitation tank, and the first valve is installed on the first discharge pipe. The annular plate is connected in the precipitation tank, and the blocking ring is connected to the top of the annular plate. The concentrated mother liquor and the precipitant are poured into the reaction kettle, and the lithium ions and the phosphate ions react in the reaction kettle to generate lithium phosphate. The separation mechanism is used for separating the concentrated mother liquor and the lithium phosphate. The heating mechanism is used for heating the concentrated mother liquor and the precipitant in the reaction kettle. The stirring mechanism is used for stirring the concentrated mother liquor and the precipitant in the reaction kettle. The concentrated mother liquor and the lithium phosphate enter the precipitation tank for precipitation. The drainage mechanism is used for draining the concentrated mother liquor in the precipitation tank.

[0006] As a preferred technical scheme of the present application, the separating mechanism comprises a first water pump, a discharge pipe, a guide pipe, a tank, a discharge pipe, a second discharge pipe, a second valve, a circular box, a straight pipe, a conical baffle, an elbow pipe, a drainage tank, a support frame, a second water pump, a suction pipe, a first water outlet pipe, a second water outlet pipe, a first hard pipe, a solenoid valve, a first hose, a first float box and a first floating plate. The first water pump is mounted on the top of the mounting frame. The discharge pipe is connected to the bottom of the reaction kettle. The discharge pipe is connected to the water inlet end of the first water pump. The water outlet end of the first water pump is connected to the guide pipe. The tank is connected to the top of the mounting frame. The guide pipe is sealingly penetrated through the tank. The tank is connected to the bottom of the discharge pipe. The second discharge pipe is connected to the discharge pipe. The lower end of the first discharge pipe is connected to the top of the second discharge pipe. The second valve is mounted on the second discharge pipe. The circular box is connected to the top of the tank. The circular box is provided with a drainage hole in the top. The straight pipe is connected to the circular box. The guide pipe is connected to the straight pipe. The first water pump is used to suck the concentrated mother liquor and lithium phosphate in the reaction kettle into the tank. The lithium phosphate is preliminarily precipitated in the tank to separate the concentrated mother liquor and lithium phosphate. The concentrated mother liquor and small particle lithium phosphate overflow through the drainage hole. The lower end of the straight pipe is connected to the conical baffle. The elbow pipe is connected to the straight pipe. The elbow pipe is provided with a filter hole. The elbow pipe is connected to the drainage tank. The drainage tank is connected to the inner wall of the tank. The support frame is connected to the top of the mounting frame. The second water pump is mounted on the top of the support frame. The suction pipe is connected to the tank. The suction pipe is connected to the water inlet end of the second water pump. The water outlet end of the second water pump is connected to the first water outlet pipe. The first water outlet pipe is connected to the second water outlet pipe. The second water outlet pipe is sealingly penetrated through the sedimentation tank. The second water pump is used to suck the concentrated mother liquor and small particle lithium phosphate into the sedimentation tank. The small particle lithium phosphate is precipitated in the sedimentation tank. The first hard pipe is connected to the suction pipe. The solenoid valve is mounted on the first hard pipe. The first hose is connected to the first hard pipe. The first hose extends into the tank through the drainage hole. The first hose is connected to the first float box. The first float box is provided with a first suction hole. The first floating plate is connected to the top of the first float box.

[0007] As a preferred technical scheme of the present application, the heating mechanism comprises an inlet pipe, an outlet pipe, a heating pipe and a support plate. The inlet pipe is connected to the top of the wrapping box. The outlet pipe is connected to the bottom of the wrapping box. The heating pipe is mounted in the wrapping box. The support plate is connected in the wrapping box.

[0008] As a preferred technical scheme of the present application, the stirring mechanism comprises a stirring motor and a stirring paddle. The stirring motor is mounted on the top of the reaction kettle. The stirring paddle is rotatably connected to the top of the reaction kettle. The output shaft of the stirring motor is connected to the stirring paddle.

[0009] As a preferred technical scheme of the present application, the drainage mechanism comprises a first drainage pipe, a second hard pipe, a second soft pipe, a second floating box and a second floating plate, the first drainage pipe is connected to the sediment tank, the top of the first drainage pipe is connected to the second hard pipe, the second hard pipe penetrates through the annular plate, the second hard pipe is connected to the second soft pipe, the second soft pipe is located in the sediment tank, the second soft pipe is connected to the second floating box, the second floating box is provided with a second suction hole, and the top of the second floating box is connected to the second floating plate.

[0010] As a preferred technical scheme of the present application, the blocking mechanism comprises a blocking net, an outer gear ring, a scraper, a rotating shaft, a gear and a servo motor, the blocking net is connected to the annular plate, the bottom of the annular plate is rotatably connected to the outer gear ring, the outer gear ring is connected to the scraper, the top of the scraper is in contact with the bottom of the blocking net, the rotating shaft is rotatably connected to the annular plate, the rotating shaft is connected to the gear, the gear is engaged with the outer gear ring, and the servo motor is installed in the sediment tank and connected to the rotating shaft.

[0011] As a preferred technical scheme of the present application, the accelerating mechanism comprises a mounting pipe, a vertical pipe, a conical contact plate, a third water pump, a penetrating pipe, a conical silica gel plate, a conical hopper, a fourth water pump, a conical head and a second drainage pipe, the mounting pipe is connected to the blocking net, the lower end of the mounting pipe is connected to the vertical pipe, the second water outlet pipe is connected to the vertical pipe, the lower end of the vertical pipe is connected to the conical contact plate, the third water pump is installed in the mounting pipe, the water inlet end of the third water pump is connected to the penetrating pipe, the penetrating pipe penetrates through the lower end of the mounting pipe and the upper end of the vertical pipe, the lower part of the penetrating pipe is provided with a third suction hole, the lower part of the penetrating pipe is connected to the conical silica gel plate, the conical silica gel plate is in contact with the inner wall of the conical contact plate, the water outlet end of the third water pump is connected to the conical hopper, the fourth water pump is installed in the mounting pipe, the water outlet end of the fourth water pump penetrates through the upper end of the mounting pipe, the water inlet end of the fourth water pump is connected to the conical head, the conical head is located in the conical hopper, the bottom of the conical head is provided with a fine hole, the water outlet end of the fourth water pump is connected to the second drainage pipe, and the lower part of the mounting pipe is provided with a discharge port.

[0012] As a preferred technical scheme of the present application, the anti-blocking mechanism comprises an air pump, an air pipe, an air tank and a one-way air outlet head, the air pump is installed on the sediment tank, the air outlet end of the air pump is connected to the air pipe, the air pipe penetrates through the sediment tank in a sealed manner, the air pipe is connected to the air tank, the top of the air tank is connected to the one-way air outlet head, and the one-way air outlet head surrounds the penetrating pipe.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The present invention can suck the concentrated mother liquor and lithium phosphate into the tank body through the first water pump, and the large particles of lithium phosphate are preliminarily precipitated in the tank body to separate the concentrated mother liquor and lithium phosphate. The concentrated mother liquor and small particles of lithium phosphate can be sucked into the sedimentation tank through the second water pump, and the small particles of lithium phosphate are precipitated in the sedimentation tank. The concentrated mother liquor and large particles of lithium phosphate have been preliminarily separated in the tank body. A small amount of lithium phosphate can naturally settle faster, which can shorten the precipitation and separation time, realize the rapid precipitation and separation of lithium phosphate, and improve the recovery efficiency.

[0015] 2. The lithium phosphate can be blocked by the blocking net to prevent the lithium phosphate from floating upward, thereby preventing the lithium phosphate from falling onto the annular plate and further preventing the lithium phosphate from leaking.

[0016] 3. The concentrated mother liquor can be sucked into the second drain pipe through the third water pump and the fourth water pump. The concentrated mother liquor flows to the annular plate through the second drain pipe and is discharged through the first drain pipe, thereby reducing the concentrated mother liquor content in the sedimentation tank, accelerating the precipitation of lithium phosphate, and further improving the recovery efficiency.

[0017] 4. Air can be sucked into the air box through the air pump, and the air is ejected through the one-way air outlet. The air can blow the small particles of lithium phosphate next to the third suction hole to prevent the small particles of lithium phosphate from blocking the third suction hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the sedimentation box, the first discharge pipe, the first valve, the annular plate and the blocking ring of the present invention.

[0020] Figure 3 This is a schematic diagram of the first three-dimensional structure of the separation mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the second three-dimensional structure of the separation mechanism of the present invention.

[0022] Figure 5 It is a partial three-dimensional structural schematic diagram of the separation mechanism of the present invention.

[0023] Figure 6 It is a cross-sectional view of the tank body of the present invention.

[0024] Figure 7 It is a cross-sectional view of the straight pipe of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the first hard tube, the solenoid valve, the first hose and the first floating plate of the present invention.

[0026] Figure 9It is the stereogram structure schematic view of first floating box, first suction hole and first floating plate of the present application.

[0027] Figure 10 It is the stereogram structure schematic view of heating mechanism of the present application.

[0028] Figure 11 It is the sectional view of wrapping box and reaction kettle of the present application.

[0029] Figure 12 It is the sectional view of precipitating box, annular plate and blocking ring of the present application.

[0030] Figure 13 It is the stereogram structure schematic view of second floating box, second suction hole and second floating plate of the present application.

[0031] Figure 14 It is the first stereogram structure schematic view of blocking mechanism of the present application.

[0032] Figure 15 It is the second stereogram structure schematic view of blocking mechanism of the present application.

[0033] Figure 16 It is the stereogram structure schematic view of accelerating mechanism of the present application.

[0034] Figure 17 It is the sectional view of installing pipe and vertical pipe of the present application.

[0035] Figure 18 It is the stereogram structure schematic view of through pipe and third suction hole of the present application.

[0036] Figure 19 It is the sectional view of installing pipe and conical hopper of the present application.

[0037] Figure 20 It is the stereogram structure schematic view of conical head and fine hole of the present application.

[0038] Figure 21 It is the first stereogram structure schematic view of anti-blocking mechanism of the present application.

[0039] Figure 22 It is the second stereogram structure schematic view of anti-blocking mechanism of the present application.

[0040] 1, mounting seat, 2, package box, 3, reaction kettle, 4, feeding pipe, 5, mounting frame, 6, sedimentation tank, 7, first discharge pipe, 8, first valve, 9, annular plate, 10, blocking ring, 111, first water pump, 112, discharge pipe, 113, guide pipe, 114, tank body, 115, discharge pipe, 116, second discharge pipe, 117, second valve, 118, circular box, 119, drain hole, 1110, straight pipe, 1111, conical baffle, 1112, elbow pipe, 1113, filter hole, 1114, drain tank, 1115, support frame, 1116, second water pump, 1117, suction pipe, 1118, first water outlet pipe, 1119, second water outlet pipe, 1120, first hard pipe, 1121, electromagnetic valve, 1122, first hose, 1123, first float box, 1124, first suction hole, 1125, first floating plate, 121, liquid inlet pipe, 122, liquid outlet pipe, 123, heating pipe, 124, support plate, 131, stirring motor, 132, stirring paddle, 141, first drain pipe, 142, second hard pipe, 143, second hose, 144, second float box, 145, second suction hole, 146, second floating plate, 151, blocking net, 152, outer gear ring, 153, scraper, 154, rotating shaft, 155, gear, 156, servo motor, 161, mounting pipe, 162, vertical pipe, 163, conical contact plate, 164, third water pump, 165, through pipe, 166, third suction hole, 167, conical silica gel plate, 168, conical hopper, 169, fourth water pump, 1610, conical head, 1611, fine hole, 1612, second drain pipe, 1613, discharge port, 171, air pump, 172, air pipe, 173, air tank, 174, one-way air outlet head. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the specific embodiments and drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and techniques is omitted to avoid unnecessary confusion of the concept of the present application.

[0042] Please refer to Figures 1-13The utility model provides a kind of lithium phosphate precipitation device for concentrating mother liquor recovery, including mounting seat 1, package box 2, reaction kettle 3, feed pipe 4, mounting frame 5, precipitation tank 6, first discharge pipe 7, first valve 8, annular plate 9, blocking ring 10, separation mechanism, heating mechanism, stirring mechanism and drainage mechanism, mounting seat 1 upper portion is connected with package box 2, package box 2 is connected with reaction kettle 3 in, reaction kettle 3 top left and right sides are connected with feed pipe 4, mounting seat 1 right side is connected with mounting frame 5, and mounting frame 5 top right side is connected with precipitation tank 6, and precipitation tank 6 bottom middle part is connected with first discharge pipe 7, and first discharge pipe 7 is installed with first valve 8, and annular plate 9 is connected in the upper portion of precipitation tank 6, and annular plate 9 top is connected with blocking ring 10, pour concentrated mother liquor and precipitant into reaction kettle 3, lithium ion and phosphate ion react in reaction kettle 3, generate lithium phosphate, separation mechanism is used for separating concentrated mother liquor and lithium phosphate, heating mechanism is used for heating concentrated mother liquor and precipitant in reaction kettle 3, stirring mechanism is used for stirring concentrated mother liquor and precipitant in reaction kettle 3, concentrated mother liquor and lithium phosphate will enter precipitation tank 6, and precipitate, drainage mechanism is used for discharging concentrated mother liquor in precipitation tank 6.

[0043] See Figures 3-9The separating mechanism comprises a first water pump 111, a discharge pipe 112, a guide pipe 113, a tank 114, a discharge pipe 115, a second discharge pipe 116, a second valve 117, a circular box 118, a straight pipe 1110, a conical baffle 1111, a bend pipe 1112, a drain tank 1114, a support frame 1115, a second water pump 1116, a suction pipe 1117, a first water outlet pipe 1118, a second water outlet pipe 1119, a first hard pipe 1120, an electromagnetic valve 1121, a first soft pipe 1122, a first float box 1123, and a first floating plate 1125. The first water pump 111 is mounted on the left top of the mounting frame 5. The discharge pipe 112 is connected to the middle of the bottom of the reaction kettle 3. The discharge pipe 112 is connected to the water inlet end of the first water pump 111. The water outlet end of the first water pump 111 is connected to the left and right sides of the guide pipe 113. The left and right sides of the top of the mounting frame 5 are connected to the tank 114. The guide pipe 113 is sealingly penetrated through the left side of the tank 114. The bottom of the tank 114 is connected to the middle of the discharge pipe 115. The second discharge pipe 116 is connected between the two discharge pipes 115. The lower end of the first discharge pipe 7 is connected to the top of the second discharge pipe 116. The second valve 117 is mounted on the second discharge pipe 116. The top of the tank 114 is connected to the circular box 118. The top of the circular box 118 is uniformly and intervaliy provided with drain holes 119. The middle of the circular box 118 is connected to the straight pipe 1110. The right end of the guide pipe 113 is connected to the left side of the straight pipe 1110. The lower end of the straight pipe 1110 is connected to the conical baffle 1111. The lower part of the straight pipe 1110 is circumferentially and uniformly intervaliy connected to four bend pipes 1112. The end of the four bend pipes 1112 close to each other is uniformly and intervaliy provided with filter holes 1113. The upper end of the bend pipe 1112 is connected to the drain tank 1114. The drain tank 1114 is connected to the inner wall of the tank 114. The top of the support frame 1115 is connected to the middle of the mounting frame 5. The top of the support frame 1115 is mounted with the second water pump 1116 on the left and right sides. The right side of the top of the tank 114 is connected to the suction pipe 1117. The suction pipe 1117 is connected to the water inlet end of the second water pump 1116. The water outlet end of the second water pump 1116 is connected to the first water outlet pipe 1118. The second water outlet pipe 1119 is connected between the two first water outlet pipes 1118. The second water outlet pipe 1119 is sealingly penetrated through the left side of the sediment tank 6. The left side of the suction pipe 1117 is connected to the first hard pipe 1120. The upper part of the first hard pipe 1120 is mounted with the electromagnetic valve 1121. The lower end of the first hard pipe 1120 is connected to the first soft pipe 1122. The first soft pipe 1122 extends into the tank 114 through the drain hole 119. The lower end of the first soft pipe 1122 is connected to the first float box 1123. The outer part of the first float box 1123 is circumferentially and uniformly intervaliy provided with first suction holes 1124. The top of the first float box 1123 is connected to the first floating plate 1125.

[0044] See Figure 10 and Figure 11The heating mechanism comprises a liquid inlet pipe 121, a liquid outlet pipe 122, a heating pipe 123 and a support plate 124, the liquid inlet pipe 121 is connected to the top of the wrapping box 2, the liquid outlet pipe 122 is connected to the bottom of the wrapping box 2, the heating pipes 123 are uniformly and interval installed in the inside of the wrapping box 2, and the support plates 124 are uniformly and interval connected to the lower part of the inside of the wrapping box 2.

[0045] Please refer to Figure 11 The stirring mechanism comprises a stirring motor 131 and a stirring paddle 132, the stirring motor 131 is installed in the middle of the top of the reaction kettle 3, the stirring paddle 132 is rotationally connected to the top of the inside of the reaction kettle 3, and the output shaft of the stirring motor 131 and the upper end of the stirring paddle 132 are connected through a shaft coupling.

[0046] Please refer to Figure 12 and Figure 13 The drainage mechanism comprises a first drainage pipe 141, a second hard pipe 142, a second soft pipe 143, a second floating box 144 and a second floating plate 146, the first drainage pipe 141 is connected to the upper right side of the sediment tank 6, the second hard pipe 142 is connected to the top of the first drainage pipe 141, the second hard pipe 142 penetrates through the right part of the annular plate 9, the second soft pipe 143 is connected to the lower end of the second hard pipe 142, the second soft pipe 143 is located in the sediment tank 6, the second floating box 144 is connected to the lower end of the second soft pipe 143, the second suction holes 145 are uniformly and interval opened to the left side of the second floating box 144, and the second floating plate 146 is connected to the top of the second floating box 144.

[0047] The staff pours the concentrated mother liquor and the precipitant into the reaction kettle 3 through the feeding pipe 4, then pours the heat conducting oil into the wrapping box 2 through the liquid inlet pipe 121, heats the heat conducting oil through the heating pipe 123, the heat conducting oil conducts heat to the reaction kettle 3, then the heat conducting oil is discharged through the liquid outlet pipe 122, the heat conducting oil circulates in the wrapping box 2, the temperature of the reaction kettle 3 can be kept in the appropriate range, the concentrated mother liquor and the precipitant make the reaction kettle 3 heavy, the supporting plate 124 can support the inside of the wrapping box 2, improve the stability of the wrapping box 2, the output shaft of the stirring motor 131 can drive the stirring paddle 132 to rotate, the stirring paddle 132 stirs the concentrated mother liquor and the precipitant, the lithium ion and the phosphate ion react to generate lithium phosphate, the first water pump 111 extracts the concentrated mother liquor and the lithium phosphate in the reaction kettle 3 through the discharge pipe 112, the concentrated mother liquor and the lithium phosphate flow into the straight pipe 1110 through the guide pipe 113, then the concentrated mother liquor and the lithium phosphate flow into the tank body 114, the lithium phosphate is preliminarily precipitated in the tank body 114 to separate the concentrated mother liquor and the lithium phosphate, the conical baffle 1111 can block part of the lithium phosphate to avoid too much lithium phosphate floating upwards, the first floating box 1123 floats on the concentrated mother liquor through the first floating plate 1125, the concentrated mother liquor enters the first floating box 1123 through the first suction hole 1124, as time goes on, the concentrated mother liquor and the lithium phosphate in the tank body 114 become more and more, part of the concentrated mother liquor enters the elbow pipe 1112 through the filter hole 1113 and is discharged through the drain tank 1114, the filter hole 1113 can filter the large particle lithium phosphate, the small particle lithium phosphate can enter the elbow pipe 1112 through the filter hole 1113 and be discharged through the drain tank 1114, which is helpful for the precipitation of the large particle lithium phosphate, then the concentrated mother liquor and the small particle lithium phosphate overflow through the drain hole 119 and flow into the suction pipe 1117, the second water pump 1116 extracts the concentrated mother liquor and the small particle lithium phosphate through the suction pipe 1117, the concentrated mother liquor and the small particle lithium phosphate flow into the precipitation tank 6 through the first water outlet pipe 1118 and the second water outlet pipe 1119, the small particle lithium phosphate is precipitated in the precipitation tank 6, the second floating box 144 floats on the concentrated mother liquor through the second floating plate 146, the concentrated mother liquor enters the second floating box 144 through the second suction hole 145, after the large particle lithium phosphate in the tank body 114 is precipitated, the control electromagnetic valve 1121 is opened, the concentrated mother liquor in the tank body 114 is sucked into the first floating box 1123 through the first suction hole 1124, then the concentrated mother liquor flows into the precipitation tank 6 through the first hose 1122, the first hard pipe 1120, the first water outlet pipe 1118 and the second water outlet pipe 1119, the liquid level in the tank body 114 decreases, the first floating box 1123 decreases with the liquid level in the tank body 114, the separation of the large particle lithium phosphate and the concentrated mother liquor is completed, the second valve 117 can be opened, the large particle lithium phosphate in the tank body 114 is discharged through the discharge pipe 115 and the second discharge pipe 116, the large particle lithium phosphate in the tank body 114 is discharged first,In order to clean the inside of the tank 114, over time, the concentrated mother liquor and small particle lithium phosphate in the sediment tank 6 will increase, the blocking ring 10 can block the small particle lithium phosphate, the concentrated mother liquor will overflow through the blocking ring 10 and flow onto the annular plate 9, and then the concentrated mother liquor is discharged through the first drain pipe 141. The concentrated mother liquor and large particle lithium phosphate have been preliminarily separated in the tank 114, and the concentrated mother liquor and small particle lithium phosphate are separated in the sediment tank 6. A small amount of lithium phosphate can be naturally settled faster, which can shorten the sedimentation separation time, realize rapid sedimentation separation of lithium phosphate, and improve the recovery efficiency. When the small particle lithium phosphate in the sediment tank 6 is settled, the first drain pipe 141 is connected to a self-priming pump. The self-priming pump sucks the concentrated mother liquor into the second floating box 144 through the second suction hole 145. Then the concentrated mother liquor flows into the first drain pipe 141 through the second soft pipe 143 and the second hard pipe 142. The liquid level in the sediment tank 6 decreases, and the second floating box 144 decreases with the liquid level in the sediment tank 6. The separation of small particle lithium phosphate and concentrated mother liquor is completed. The first valve 8 is opened, and the small particle lithium phosphate in the sediment tank 6 is discharged through the first discharge pipe 7 and the second discharge pipe 116.

[0048] Please refer to Figure 14 and Figure 15 It also includes a blocking mechanism, which includes a screen 151, an outer gear ring 152, a scraper 153, a shaft 154, a gear 155, and a servo motor 156. The annular plate 9 is connected with the screen 151, the bottom of the annular plate 9 is rotatably connected with the outer gear ring 152, the left and right sides of the outer gear ring 152 are connected with the scraper 153, the top of the scraper 153 is in contact with the bottom of the screen 151, the front of the annular plate 9 is rotatably connected with the shaft 154, the lower end of the shaft 154 is connected with the gear 155 through a key, the gear 155 is engaged with the outer gear ring 152, and the front upper side of the sediment tank 6 is installed with the servo motor 156. The output shaft of the servo motor 156 is connected with the upper end of the shaft 154 through a shaft coupling.

[0049] The screen 151 can block the lithium phosphate, avoid the lithium phosphate floating upward, thereby avoiding the lithium phosphate falling onto the annular plate 9, and further avoiding the lithium phosphate leaking. The output shaft of the servo motor 156 can drive the shaft 154 to rotate, the shaft 154 drives the gear 155 to rotate, the gear 155 drives the outer gear ring 152 to rotate, the outer gear ring 152 drives the scraper 153 to rotate, and the scraper 153 can scrape off the lithium phosphate attached to the bottom of the screen 151, avoiding the lithium phosphate blocking the screen 151, and ensuring that the concentrated mother liquor can pass through the screen 151.

[0050] Please refer to Figures 16-20, also includes an acceleration mechanism, the acceleration mechanism includes a mounting pipe 161, a vertical pipe 162, a conical contact plate 163, a third water pump 164, a through pipe 165, a conical silicone plate 167, a conical bucket 168, a fourth water pump 169, a conical head 1610 and a second drain pipe 1612, the middle part of the retaining net 151 is connected to the mounting pipe 161, the lower end of the mounting pipe 161 is connected to the vertical pipe 162, the right end of the second water outlet pipe 1119 is connected to the upper left part of the vertical pipe 162, the lower end of the vertical pipe 162 is connected to the conical contact plate 163, the lower part of the mounting pipe 161 is installed in the lower part of the mounting pipe 164, the water inlet end of the third water pump 164 is connected to the through pipe 165, the through pipe 165 passes through the lower end of the mounting pipe 161 and the upper end of the vertical pipe 162, The lower part of the through-tube 165 is circumferentially evenly spaced with third suction holes 166, the lower part of the through-tube 165 is connected to a conical silicone plate 167, the conical silicone plate 167 is in contact with the inner wall of the conical contact plate 163, the water outlet end of the third water pump 164 is connected to a conical bucket 168, the upper inner part of the mounting tube 161 is installed with a fourth water pump 169, the water outlet end of the fourth water pump 169 passes through the upper end of the mounting tube 161, the water inlet end of the fourth water pump 169 is connected with a conical head 1610, the conical head 1610 is located in the conical bucket 168, the bottom of the conical head 1610 is evenly spaced with fine holes 1611, the water outlet end of the fourth water pump 169 is connected to a second drain pipe 1612, and the lower part of the mounting tube 161 is circumferentially evenly spaced with discharge ports 1613.

[0051] The concentrated mother liquor and small particle lithium phosphate flow into the vertical pipe 162 through the second water outlet pipe 1119, and the conical silica gel plate 167 can weaken the impact force of the concentrated mother liquor and small particle lithium phosphate, so as to avoid the impact force being too large to cause the lithium phosphate in the precipitation tank 6 to move violently. The concentrated mother liquor and small particle lithium phosphate can press the conical silica gel plate 167, the conical silica gel plate 167 can be deformed, the concentrated mother liquor and small particle lithium phosphate flow into the precipitation tank 6 through the gap between the conical silica gel plate 167 and the conical contact plate 163, and the third water pump 164 sucks the concentrated mother liquor into the through pipe 165 through the third suction hole 166. The third suction hole 166 can filter the small particle lithium phosphate, so as to avoid the small particle lithium phosphate entering the through pipe 165. However, the more fine particle lithium phosphate can enter the through pipe 165 through the third suction hole 166. The concentrated mother liquor and the more fine particle lithium phosphate flow into the conical hopper 168, the fourth water pump 169 sucks the concentrated mother liquor into the conical head 1610 through the fine hole 1611, the fine hole 1611 can filter the more fine particle lithium phosphate, so as to avoid the more fine particle lithium phosphate entering the conical head 1610. The more fine particle lithium phosphate can overflow from the conical hopper 168 and fall into the installation pipe 161 along with the concentrated mother liquor, and is discharged through the discharge port 1613, so as to avoid the more fine particle lithium phosphate blocking the fine hole 1611. The concentrated mother liquor in the conical head 1610 flows onto the annular plate 9 through the second drain pipe 1612, and is discharged through the first drain pipe 141, so as to reduce the content of the concentrated mother liquor in the precipitation tank 6, speed up the precipitation of lithium phosphate, and further improve the recovery efficiency.

[0052] Please refer to Figure 21 and Figure 22 The anti-blocking mechanism comprises an air pump 171, an air pipe 172, an air tank 173 and a one-way air outlet head 174. The air pump 171 is installed at the lower right side of the precipitation tank 6, the air outlet end of the air pump 171 is connected with the air pipe 172, the air pipe 172 penetrates the lower right side of the precipitation tank 6 in a sealed manner, the left end of the air pipe 172 is connected with the air tank 173, the top of the air tank 173 is connected with the one-way air outlet head 174 in a uniform and spaced manner, and the one-way air outlet head 174 surrounds the through pipe 165.

[0053] The air pump 171 can suck air into the air pipe 172, the air flows into the air tank 173 through the air pipe 172, and is sprayed out through the one-way air outlet head 174. The air can blow the small particle lithium phosphate beside the third suction hole 166, so as to avoid the small particle lithium phosphate blocking the third suction hole 166.

[0054] The above only describes the embodiments of the present application and is not used to limit the present application. Any equivalent replacement within the principles of the present application shall be included in the protection scope of the present application. The contents not described in detail in the present application belong to the prior art known by the technical personnel in the field.

Claims

1. A lithium phosphate precipitation device for recovering concentrated mother liquor, comprising a mounting base (1), a wrapping box (2), a reactor (3) and a feed pipe (4), wherein the mounting base (1) is connected to the wrapping box (2), the reactor (3) is connected inside the wrapping box (2), and the top of the reactor (3) is connected to the feed pipe (4), characterized in that: The invention also includes a mounting frame (5), a sedimentation box (6), a first discharge pipe (7), a first valve (8), an annular plate (9), a blocking ring (10), a separation mechanism, a heating mechanism, a stirring mechanism and a drainage mechanism. The mounting base (1) is connected to the mounting frame (5), the top of the mounting frame (5) is connected to the sedimentation box (6), the bottom of the sedimentation box (6) is connected to the first discharge pipe (7), the first valve (8) is installed on the first discharge pipe (7), the inside of the sedimentation box (6) is connected to the annular plate (9), the top of the annular plate (9) is connected to the blocking ring (10), and the bottom of the annular plate (9) is connected to the first discharge pipe (7). The ring (10) pours the concentrated mother liquor and the precipitant into the reactor (3), and the lithium ions and phosphate ions react in the reactor (3) to generate lithium phosphate. The separation mechanism is used to separate the concentrated mother liquor and the lithium phosphate. The heating mechanism is used to heat the concentrated mother liquor and the precipitant in the reactor (3). The stirring mechanism is used to stir the concentrated mother liquor and the precipitant in the reactor (3). The concentrated mother liquor and the lithium phosphate enter the precipitation tank (6) for precipitation. The drainage mechanism is used to discharge the concentrated mother liquor in the precipitation tank (6); The separation mechanism comprises a first water pump (111), a discharge pipe (112), a guide pipe (113), a tank body (114), a discharge pipe (115), a second discharge pipe (116), a second valve (117), a circular box (118), a straight pipe (1110), a conical baffle (1111), a curved pipe (1112), a drainage box (1114), a support frame (1115), a second water pump (1116), a suction pipe (1117), a first water outlet pipe (1118), a second water outlet pipe (1119), a first hard pipe (1120), a solenoid valve (1121), a first hose (1122), a first float box (1123) and a first float plate (1125). The first water pump (111) is installed on the top of the mounting frame (5). The bottom of the reactor (3) is connected to a discharge pipe (112), which is connected to the water inlet of the first water pump (111), and the water outlet of the first water pump (111) is connected to a guide pipe (113). The top of the mounting frame (5) is connected to a tank body (114), and the guide pipe (113) is sealed and passes through the tank body (114). The bottom of the tank body (114) is connected to a discharge pipe (115), and the discharge pipe (115) is connected to a second discharge pipe (116). The lower end of the first discharge pipe (7) is connected to the top of the second discharge pipe (116), and a second valve (117) is installed on the second discharge pipe (116). The top of the tank body (114) is connected to a circular box (118), and a drainage hole (119) is opened on the top of the circular box (118). The shaped box (118) is connected to a straight pipe (1110), the guide pipe (113) is connected to the straight pipe (1110), the first water pump (111) is used to suck the concentrated mother liquor and lithium phosphate in the reactor (3) into the tank body (114), the lithium phosphate is initially precipitated in the tank body (114) to separate the concentrated mother liquor and lithium phosphate, and the concentrated mother liquor and small particles of lithium phosphate will overflow through the drainage hole (119), the lower end of the straight pipe (1110) is connected to a conical baffle (1111), the straight pipe (1110) is connected to a curved pipe (1112), the curved pipe (1112) is provided with a filter hole (1113), the curved pipe (1112) is connected to a drainage box (1114), and the drainage box (1114) is connected to the inner wall of the tank body (114). The top of the mounting frame (5) is connected to a support frame (1115), and a second water pump (1116) is installed on the top of the support frame (1115). A suction pipe (1117) is connected to the tank body (114), and the suction pipe (1117) is connected to the water inlet end of the second water pump (1116). The water outlet end of the second water pump (1116) is connected to a first water outlet pipe (1118), and the first water outlet pipe (1118) is connected to a second water outlet pipe (1119). The second water outlet pipe (1119) is sealed and passes through the sedimentation tank (6). The second water pump (1116) is used to suck the concentrated mother liquor and small particles of lithium phosphate into the sedimentation tank (6), and the small particles of lithium phosphate are precipitated in the sedimentation tank (6). The suction pipe (1117) is connected to a first hard pipe (1120).A solenoid valve (1121) is installed on the first hard tube (1120). A first hose (1122) is connected to the first hard tube (1120). The first hose (1122) extends into the tank body (114) through the drainage hole (119). The first hose (1122) is connected to a first float box (1123). The first float box (1123) has a first suction hole (1124). The top of the first float box (1123) is connected to a first floating plate (1125).

2. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 1, characterized in that: The heating mechanism comprises a liquid inlet pipe (121), a liquid outlet pipe (122), a heating pipe (123) and a support plate (124); the top of the parcel box (2) is connected to the liquid inlet pipe (121); the bottom of the parcel box (2) is connected to the liquid outlet pipe (122); the heating pipe (123) is installed in the parcel box (2); and the support plate (124) is connected in the parcel box (2).

3. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 2, characterized in that: The stirring mechanism comprises a stirring motor (131) and a stirring paddle (132). The stirring motor (131) is installed on the top of the reactor (3). The top of the reactor (3) is rotatably connected to the stirring paddle (132). The output shaft of the stirring motor (131) is connected to the stirring paddle (132).

4. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 3, characterized in that: The drainage mechanism comprises a first drainage pipe (141), a second hard pipe (142), a second hose (143), a second float box (144) and a second float plate (146). The sedimentation box (6) is connected to the first drainage pipe (141), the top of the first drainage pipe (141) is connected to the second hard pipe (142), the second hard pipe (142) passes through the annular plate (9), the second hard pipe (142) is connected to the second hose (143), the second hose (143) is located in the sedimentation box (6), the second hose (143) is connected to the second float box (144), the second float box (144) is provided with a second suction hole (145), and the top of the second float box (144) is connected to the second float plate (146).

5. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 4, characterized in that: The invention also includes a blocking mechanism, which includes a blocking net (151), an outer gear ring (152), a scraper (153), a rotating shaft (154), a gear (155) and a servo motor (156). The blocking net (151) is connected inside the annular plate (9). The bottom of the annular plate (9) is rotatably connected to the outer gear ring (152). The outer gear ring (152) is connected to the scraper (153). The top of the scraper (153) contacts the bottom of the blocking net (151). The annular plate (9) is rotatably connected to the rotating shaft (154). The rotating shaft (154) is connected to the gear (155). The gear (155) and the outer gear ring (152) are meshed. The servo motor (156) is installed in the sedimentation box (6). The output shaft of the servo motor (156) is connected to the rotating shaft (154).

6. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 5, characterized in that: The invention also includes an acceleration mechanism, which includes a mounting pipe (161), a vertical pipe (162), a conical contact plate (163), a third water pump (164), a through pipe (165), a conical silica gel plate (167), a conical bucket (168), a fourth water pump (169), a conical head (1610) and a second drainage pipe (1612). The retaining net (151) is connected to the mounting pipe (161), the lower end of the mounting pipe (161) is connected to the vertical pipe (162), the second water outlet pipe (1119) is connected to the vertical pipe (162), the lower end of the vertical pipe (162) is connected to the conical contact plate (163), the third water pump (164) is installed in the mounting pipe (161), the water inlet end of the third water pump (164) is connected to the through pipe (165), the through pipe (165) penetrates the lower end of the mounting pipe (161) and the vertical pipe ( 162), a third suction hole (166) is opened at the lower part of the penetration tube (165), a conical silica gel plate (167) is connected to the lower part of the penetration tube (165), the conical silica gel plate (167) is in contact with the inner wall of the conical contact plate (163), the water outlet end of the third water pump (164) is connected to a conical bucket (168), a fourth water pump (169) is installed in the installation tube (161), the water outlet end of the fourth water pump (169) penetrates the upper end of the installation tube (161), the water inlet end of the fourth water pump (169) is connected to a conical head (1610), the conical head (1610) is located in the conical bucket (168), and a fine hole (1611) is opened at the bottom of the conical head (1610), the water outlet end of the fourth water pump (169) is connected to a second drain pipe (1612), and a discharge port (1613) is opened at the lower part of the installation tube (161).

7. A lithium phosphate precipitation device for recovering concentrated mother liquor according to claim 6, characterized in that: The invention also includes an anti-blocking mechanism, which includes an air pump (171), an air pipe (172), an air box (173) and a one-way air outlet head (174). The air pump (171) is installed on the sedimentation box (6). The air outlet end of the air pump (171) is connected to the air pipe (172). The air pipe (172) seals and penetrates the sedimentation box (6). The air pipe (172) is connected to the air box (173). The top of the air box (173) is connected to the one-way air outlet head (174). The one-way air outlet head (174) surrounds the through-tube (165).

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