Mother liquor processor

Abstract

The invention relates to the technical field of evaporative crystallization, in particular to a mother liquor treater which comprises a box body, an evaporation tank is arranged on the box body, a liquid inlet pipe and a liquid outlet pipe are arranged on the evaporation tank, a heating assembly is arranged on the box body and used for heating the evaporation tank, and a steam removal assembly is arranged on the evaporation tank and used for removing steam from the evaporation tank. The steam removal assembly is used for treating steam generated by the evaporation tank, and a stirring assembly is arranged on the evaporation tank and used for stirring mother liquor in the evaporation tank. The method has the effects of rapidly evaporating and crystallizing the mother liquor and reducing mother liquor pollution.

Description

Technical Field

[0001] The present application relates to the technical field of evaporation and crystallization, and in particular to a mother liquor processor. Background Art

[0002] Mother liquor is the saturated solution left after the precipitate or crystal is separated in the chemical precipitation or crystallization process. In actual production, the concentrate of the drug to be produced, i.e., mother liquor, can be prepared first to facilitate storage and save space, and then the high-concentration drug can be diluted with several times or a small amount of water to a higher concentration solution, and finally the final product we need can be obtained through further dilution.

[0003] A Chinese patent with announcement number CN110713290A discloses a system and method for resource processing of high-salt evaporation mother liquor, including an electrolysis device, a neutralization reaction device and an adsorption purification device; the electrolysis device includes a reaction box with a liquid inlet pipe, a liquid outlet pipe and a sampling pipe, a positive electrode sheet and a negative electrode sheet are arranged in the reaction box, and a reaction gas outlet is arranged on the top of the reaction box.

[0004] During the use of the above technology, the mother liquor in the reaction box is evaporated and concentrated by energizing the positive and negative electrodes. On the one hand, electrolysis will produce a large amount of electrolysis by-products mixed into the mother liquor, and on the other hand, it will consume the main components of the mother liquor, which is inconsistent with the main purpose of evaporation and concentration of the mother liquor and has shortcomings. Summary of the invention

[0005] In order to improve the problem that electrolysis of mother liquor will reduce the main components of the mother liquor and increase the by-products of the mother liquor, the present application provides a mother liquor processor.

[0006] The mother liquid processor provided in this application adopts the following technical solution: A mother liquid processor comprises a box body, an evaporation tank is arranged on the box body, a liquid inlet pipe and a liquid discharge pipe are arranged on the evaporation tank, a heating component is arranged on the box body, the heating component is used to heat the evaporation tank, a degassing component is arranged on the evaporation tank, the degassing component is used to process the steam generated by the evaporation tank, and a stirring component is arranged on the evaporation tank, the stirring component is used to stir the mother liquid in the evaporation tank.

[0007] By adopting the above technical solution, workers input the mother liquor into the evaporation tank through the liquid inlet pipe, and then the heating component heats the evaporation tank, and the stirring component stirs the mother liquor in the evaporation tank. The steam evaporated from the mother liquor is processed by the degassing component to avoid the diffusion of harmful substances in the mother liquor. Finally, the evaporated and crystallized mother liquor is discharged out of the box through the drain pipe. In this process, the mother liquor is evaporated quickly and no by-products are produced, which is beneficial to improve the utilization rate of the mother liquor.

[0008] Optionally, the heating assembly includes a heating shell arranged on the evaporator, a heating chamber is enclosed between the heating shell and the outer side wall of the evaporator, a steam inlet pipe connected to the interior of the heating shell is arranged on the box body, high-temperature steam flows in the steam inlet pipe, a water exchange water cylinder is arranged on the box body, the water exchange water cylinder is connected to the interior of the heating shell via an exhaust pipe, an exhaust pump connected to the water exchange water cylinder is arranged on the box body, and the exhaust pump is electrically connected to a control system.

[0009] By adopting the above technical solution, high-temperature steam flows into the heating chamber surrounded by the heating shell and the evaporator through the steam inlet pipe, so that the mother liquid in the evaporator is fully heated, and the high-temperature steam condensed in the heating chamber flows into the heat exchange water cylinder through the exhaust pipe. At the same time, the control system starts the exhaust pump, and the exhaust pump discharges the condensed steam and water in the heat exchange water cylinder.

[0010] Optionally, the degassing assembly includes a steam filter connected to the evaporator, a plate heat exchanger and a water storage cylinder are provided on the box body, a degassing pipe is connected between the steam filter and the plate heat exchanger, a liquid collecting pipe is connected between the water storage cylinder and the plate heat exchanger, a cold water pipe and a temperature discharge pipe are provided on the box body, a cooling pipe is connected between the cold water pipe and the plate heat exchanger, a flow temperature pipe is connected between the temperature discharge pipe and the plate heat exchanger, a drainage pump connected to the water storage cylinder is provided on the box body, and the drainage pump is electrically connected to the control system.

[0011] By adopting the above technical solution, the steam generated by the mother liquid in the evaporator will flow through the steam filter, and the steam filter will filter and absorb the steam generated by the mother liquid. The steam flowing through the steam filter will flow into the plate heat exchanger through the degassing pipe. At the same time, the cold water pipe will inject cooling water into the plate heat exchanger through the cooling pipe. The steam flowing in through the degassing pipe will flow into the water storage cylinder through the collecting pipe after the cooling effect of the plate heat exchanger. The cooling water flowing into the plate heat exchanger through the cooling pipe will absorb heat and then flow to the temperature discharge pipe through the temperature flow pipe and out. When the condensed water in the water storage cylinder has been collected for a period of time, the control system will start the drain pump, and the drain pump will discharge the condensed water in the water storage cylinder.

[0012] Optionally, the stirring assembly includes a stirring shaft coaxially rotatably arranged on the evaporator, the box body is provided with a driving motor electrically connected to the control system, the stirring shaft is coaxially arranged on the output shaft of the driving motor, and the stirring shaft is provided with a spiral stirring arc plate, and the spiral outer edge of the stirring arc plate is in close contact with the inner wall of the evaporator.

[0013] By adopting the above technical solution, the control system starts the driving motor, the output shaft of the driving motor drives the stirring shaft to rotate, and the stirring shaft drives the stirring arc plate to continuously stir the mother liquor in the evaporation tank, and the evaporated mother liquor will crystallize on the inner wall of the evaporation tank. The rotating stirring arc plate will hang off the mother liquor crystals attached to the inner wall of the evaporation tank, and the mother liquor crystals attached to the inner wall of the evaporation tank will be transported to one end of the discharge pipe by the spiral stirring arc plate for accumulation.

[0014] Optionally, a gas-liquid separator, a vacuum pump and a vacuum plate heat exchanger are provided on the box body, an air supply pipe is connected between the gas-liquid separator and the vacuum pump, an air storage pipe is connected between the vacuum pump and the top of the water storage cylinder, a reflux pipe is connected between the gas-liquid separator and the vacuum plate heat exchanger, a cold flow pipe is connected between the vacuum pump and the vacuum plate heat exchanger, a cold source pipe is connected between the cold water pipe and the vacuum plate heat exchanger, a hot flow pipe is connected between the exhaust pipe and the vacuum plate heat exchanger, and an exhaust pipe connected to the outside of the box body is provided on the gas-liquid separator.

[0015] By adopting the above technical scheme, the steam flowing into the water storage cylinder is rich in a large amount of water. The vacuum pump extracts the steam from the water storage cylinder through the gas storage pipe and inputs it into the gas-liquid separator through the gas transmission pipe. The gas-liquid separator separates the steam into gas and liquid. The air is discharged out of the box through the exhaust pipe. The separated water flows into the vacuum plate heat exchanger through the reflux pipe. The cold source pipe and the hot flow pipe make the vacuum plate heat exchanger continuously cool down and absorb heat, and the condensed water in the vacuum pump flows into the vacuum plate heat exchanger through the cold flow pipe, and finally the condensate is discharged through the outlet of the vacuum plate heat exchanger.

[0016] Optionally, an end seat is provided on the evaporator, the drain pipe is located at the end of the evaporator facing away from the drive motor, a cylinder electrically connected to a control system is provided on the end seat, a valve plate is coaxially slidably provided on the drain pipe, the valve plate is used to seal the drain pipe, and the valve plate is provided on the piston rod of the cylinder.

[0017] By adopting the above technical solution, the crystals scraped off by the stirring arc blades will accumulate in the drain pipe, and then the control system starts the cylinder, which drives the valve plate to open the drain pipe by contracting its piston rod, and the concentrated mother liquor in the evaporation tank is discharged from the drain pipe with the crystals, thereby realizing the evaporation and concentration of the mother liquor.

[0018] Optionally, a crystal row shell is provided on the evaporation tank, and the crystal row shell is connected to the inner wall of the evaporation tank, and a crystal row shaft coaxial with the piston rod of the cylinder is rotatably provided on the crystal row shell, and a spiral crystal row arc sheet is provided on the crystal row shaft, and a linkage shaft with a polygonal cross-section is coaxially and slidably provided on the crystal row shaft, the valve plate is provided on the linkage shaft, and the linkage shaft is rotatably provided on the piston rod of the cylinder, and a rotating part for driving the linkage shaft to rotate is provided on the end seat.

[0019] By adopting the above technical scheme, the crystals scraped off the inner wall of the evaporator will be accumulated in the crystal row shell under the conveying action of the stirring arc sheet, and then the worker starts the cylinder through the control system. The cylinder drives the valve plate to open the drain pipe by contracting its piston rod, and then the rotating part drives the linkage shaft to rotate. The linkage shaft drives the crystal row arc sheet to rotate through the crystal row shaft. The spiral crystal row arc sheet will discharge the crystals accumulated in the crystal row shell through the drain pipe, thereby reducing the possibility of crystals remaining in the evaporator.

[0020] Optionally, the rotating member includes a support plate arranged on the end seat, a pulley is rotatably arranged on the support plate, a transmission belt is wound around the pulley and the agitator shaft, a transmission cone with a regular polygonal cross-section is arranged on the linkage shaft, the transmission cone is located between the valve plate and the pulley, the cross-section of the transmission cone gradually decreases along the direction from the valve plate to the pulley, and a conical groove for inserting the transmission cone is opened on the pulley, and there is a gap between the conical groove and the linkage shaft.

[0021] By adopting the above technical solution, when the control system starts the cylinder to retract its piston rod, the piston rod of the cylinder pulls the linkage shaft rod, and the linkage shaft rod slides along the axis of the crystal row shaft. At the same time, the linkage shaft rod gradually drives the valve plate to open the drain pipe. At this time, the linkage shaft rod will drive the transmission cone to continuously approach the cone notch until the transmission cone is inserted into the cone notch on the pulley. At this time, the control system starts the drive motor again, and the drive motor drives the stirring shaft to rotate. The stirring arc plate will continuously transport the crystals in the evaporation tank to the crystal row shell. At the same time, the stirring shaft drives the pulley to rotate through the transmission belt, and the pulley drives the linkage shaft rod to rotate synchronously through the transmission cone, so that the crystal row arc plate can discharge the crystals accumulated in the crystal row shell, further reducing the possibility of crystals remaining in the evaporation tank.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Workers input the mother liquor into the evaporation tank through the liquid inlet pipe, and then the heating component heats the evaporation tank, and the stirring component stirs the mother liquor in the evaporation tank. The steam evaporated from the mother liquor is processed by the degassing component to prevent the diffusion of harmful substances in the mother liquor. Finally, the evaporated and crystallized mother liquor is discharged out of the box through the drain pipe. In this process, the mother liquor is evaporated quickly and no by-products are produced, which is conducive to improving the utilization rate of the mother liquor; 2. The control system starts the drive motor, and the output shaft of the drive motor drives the stirring shaft to rotate. The stirring shaft drives the stirring arc plate to continuously stir the mother liquid in the evaporation tank, and the evaporated mother liquid will crystallize on the inner wall of the evaporation tank. The rotating stirring arc plate will remove the mother liquid crystals attached to the inner wall of the evaporation tank, and the spiral stirring arc plate will transport them to one end of the discharge pipe for accumulation; 3. When the control system starts the cylinder to retract its piston rod, the piston rod of the cylinder pulls the linkage shaft rod, and the linkage shaft rod slides along the axis of the crystal row shaft. At the same time, the linkage shaft rod gradually drives the valve plate to open the drain pipe. At this time, the linkage shaft rod will drive the transmission cone to continuously approach the cone notch until the transmission cone is inserted into the cone notch on the pulley. At this time, the control system starts the drive motor again, and the drive motor drives the stirring shaft to rotate. The stirring arc sheet will continuously transport the crystals in the evaporation tank to the crystal row shell. At the same time, the stirring shaft drives the pulley to rotate through the transmission belt, and the pulley drives the linkage shaft rod to rotate synchronously through the transmission cone, so that the crystal row arc sheet can discharge the crystals accumulated in the crystal row shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of Example 1 of the present application.

[0024] Figure 2 It is a structural schematic diagram of the positional relationship between the evaporation tank, the water exchange cylinder and the steam filter in Example 1 of the present application.

[0025] Figure 3 It is a structural schematic diagram of the positional relationship among the evaporator, the vacuum plate heat exchanger and the plate heat exchanger in Example 1 of the present application.

[0026] Figure 4 It is a cross-sectional view showing the positional relationship among the evaporation tank, the stirring shaft and the stirring arc plate in Example 1 of the present application.

[0027] Figure 5 It is a cross-sectional view showing the positional relationship among the pulley, transmission cone and linkage shaft in Example 2 of the present application.

[0028] Description of reference numerals: 1, housing; 2, evaporator; 3, liquid inlet pipe; 4, liquid discharge pipe; 5, heating assembly; 51, heating shell; 52, heating chamber; 53, steam inlet pipe; 54, heat exchanger cylinder; 55, steam discharge pipe; 56, steam exhaust pump; 6, steam removal assembly; 60, steam filter; 61, plate heat exchanger; 62, water storage cylinder; 63, steam removal pipe; 64, liquid collecting pipe; 65, cold water pipe; 66, temperature discharge pipe; 67, cooling pipe; 68, temperature flow pipe; 69, liquid discharge pump; 7, stirring assembly; 71, stirring shaft; 72, driving motor; 73 , stirring arc plate; 8, gas-liquid separator; 9, vacuum pump; 10, vacuum plate heat exchanger; 11, gas pipeline; 12, gas storage pipe; 13, reflux pipe; 14, cold flow pipe; 15, cold source pipe; 16, hot flow pipe; 17, exhaust pipe; 18, end seat; 19, cylinder; 20, valve plate; 21, crystal row shell; 22, crystal row shaft; 23, crystal row arc plate; 24, linkage shaft; 25, rotating part; 251, support plate; 252, pulley; 253, transmission belt; 254, transmission cone; 255, cone notch; 26, inspection door; 27, lifting ear. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0030] The embodiment of the present application discloses a mother liquor processor.

[0031] Example 1 Reference Figure 1 A mother liquid processor includes a box body 1, a maintenance door 26 is rotatably connected to the box body 1, a lifting ear 27 is welded on the top of the box body 1, a horizontal evaporation tank 2 is bolted inside the box body 1, and the evaporation tank 2 is connected to a liquid inlet pipe 3 and a liquid discharge pipe 4.

[0032] Reference Figure 2 , Figure 3 and Figure 4 A heating assembly 5 is arranged on the box body 1, and the heating assembly 5 is used to heat the evaporation tank 2. The heating assembly 5 includes a heating shell 51 welded to the bottom of the evaporation tank 2, and a heating chamber 52 is enclosed between the heating shell 51 and the outer wall of the evaporation tank 2.

[0033] Reference Figure 2 , Figure 3 and Figure 4 A steam inlet pipe 53 connected to the heating chamber 52 inside the heating shell 51 is arranged on the box body 1, and high-temperature steam flows into the steam inlet pipe 53. A hot water exchange cylinder 54 is bolted to the box body 1. The hot water exchange cylinder 54 is connected to the heating chamber 52 inside the heating shell 51 through an exhaust pipe 55. An exhaust pump 56 connected to the hot water exchange cylinder 54 and electrically connected to the control system is bolted to the box body 1.

[0034] After the workers hoist the box 1 to the working position by hoisting equipment, the workers inject the mother liquid into the drain pipe 4, and then input the high-temperature steam into the steam inlet pipe 53. The high-temperature steam flows into the heating chamber 52 through the steam inlet pipe 53. The high-temperature steam in the heating chamber 52 heats the mother liquid in the evaporation tank 2 by heat transfer.

[0035] Reference Figure 2 , Figure 3 and Figure 4 A degassing assembly 6 is arranged on the evaporation tank 2. The degassing assembly 6 is used to filter and adsorb the mother liquid steam generated by the evaporation tank 2. The degassing assembly 6 includes a steam filter 60 connected to the evaporation tank 2. A plate heat exchanger 61 and a water storage cylinder 62 are bolted to the box body 1. A degassing pipe 63 is connected between the steam filter 60 and the plate heat exchanger 61.

[0036] Reference Figure 2 , Figure 3 and Figure 4A collecting pipe 64 is connected between the water storage cylinder 62 and the plate heat exchanger 61, a cold water pipe 65 and a temperature discharge pipe 66 are arranged on the box body 1, a cooling pipe 67 is connected between the cold water pipe 65 and the plate heat exchanger 61, a flow temperature pipe 68 is connected between the temperature discharge pipe 66 and the plate heat exchanger 61, and a drainage pump 69 connected to the water storage cylinder 62 is bolted to the box body 1, and the drainage pump 69 is electrically connected to the control system.

[0037] Reference Figure 2 , Figure 3 and Figure 4 A stirring assembly 7 is arranged on the evaporation tank 2, and the stirring assembly 7 is used to stir the mother liquid in the evaporation tank 2. The stirring assembly 7 includes a stirring shaft 71 coaxially rotatably connected to the evaporation tank 2. A driving motor 72 electrically connected to the control system is bolted to the box body 1. The stirring shaft 71 is coaxially bolted to the output shaft of the driving motor 72. A spiral stirring arc piece 73 is welded on the stirring shaft 71, and the spiral outer edge of the stirring arc piece 73 is in close contact with the inner wall of the evaporation tank 2.

[0038] The control system starts the drive motor 72, the output shaft of the drive motor 72 drives the stirring shaft 71 to rotate, and the stirring shaft 71 drives the stirring arc plate 73 to rotate synchronously. The mother liquid in the evaporation tank 2 is continuously stirred by the stirring arc plate 73. At the same time, the mother liquid is continuously heated and crystallized on the inner wall of the evaporation tank 2. The stirring arc plate 73 hangs off the crystals and transports them to one end of the discharge pipe 4.

[0039] At the same time, the steam generated by the evaporation of the mother liquor flows into the steam filter 60, and the steam filter 60 filters out harmful substances from the steam generated by the mother liquor. The steam flowing through the steam filter 60 flows into the plate heat exchanger 61 through the degassing pipe 63. At the same time, the cold water pipe 65 injects cooling water into the plate heat exchanger 61 through the cooling pipe 67. The cooling water that flows into the plate heat exchanger 61 through the cooling pipe 67 absorbs heat and then flows to the exhaust pipe 66 through the flow temperature pipe 68 and flows out.

[0040] The steam flowing in through the desteaming pipe 63 absorbs heat and is cooled in the plate heat exchanger 61. The steam cooled in the plate heat exchanger 61 flows into the water storage cylinder 62 through the collecting pipe 64. After the condensed water in the water storage cylinder 62 collects for a period of time, the control system starts the drainage pump 69, and the drainage pump 69 discharges the condensed water in the water storage cylinder 62 to the outside of the box body 1.

[0041] Reference Figure 2 , Figure 3 and Figure 4A gas-liquid separator 8, a vacuum pump 9 and a vacuum plate heat exchanger 10 are arranged on the box body 1. An air supply pipe 11 is connected between the gas-liquid separator 8 and the vacuum pump 9. An air storage pipe 12 is connected between the vacuum pump 9 and the top of the water storage cylinder 62. A reflux pipe 13 is connected between the gas-liquid separator 8 and the vacuum plate heat exchanger 10. A cold flow pipe 14 is connected between the vacuum pump 9 and the vacuum plate heat exchanger 10. A cold source pipe 15 is connected between the cold water pipe 65 and the vacuum plate heat exchanger 10.

[0042] The control system starts the vacuum pump 9, which extracts the steam in the water storage cylinder 62 through the gas storage pipe 12 and inputs it into the gas-liquid separator 8 through the gas supply pipe 11. The gas-liquid separator 8 separates the steam into gas and liquid, and the air is discharged to the outside of the box 1 through the exhaust pipe 17.

[0043] The water separated by the gas-liquid separator 8 flows into the vacuum plate heat exchanger 10 through the reflux pipe 13, the cold source pipe 15 and the hot flow pipe 16 continuously exchange heat and cool the vacuum plate heat exchanger 10, and the water condensed from the steam extracted by the vacuum pump 9 flows into the vacuum plate heat exchanger 10 through the cold flow pipe 14, and finally the condensate is discharged through the water outlet on the vacuum plate heat exchanger 10.

[0044] Reference Figure 2 , Figure 3 and Figure 4 A heat flow pipe 16 is connected between the temperature discharge pipe 66 and the vacuum plate heat exchanger 10, an exhaust pipe 17 connected to the outside of the box body 1 is arranged on the gas-liquid separator 8, an end seat 18 is welded on the evaporator 2, the drain pipe 4 is located at the end of the evaporator 2 facing away from the drive motor 72, and a cylinder 19 electrically connected to the control system is bolted to the end seat 18. A valve plate 20 is coaxially slidably arranged on the drain pipe 4, and the valve plate 20 is used to block the drain pipe 4. The valve plate 20 is bolted to the piston rod of the cylinder 19.

[0045] After the mother liquor evaporates for a period of time, the worker starts the cylinder 19 through the control system. The piston rod of the cylinder 19 drives the valve plate 20 to open the drain pipe 4. The mother liquor remaining in the evaporator 2 is discharged through the drain pipe 4 together with the mother liquor crystals scraped off by the stirring arc blade 73 to the collection device outside the box 1 for storage.

[0046] The implementation principle of Example 1 is as follows: after the worker hoists the box body 1 to the working position by hoisting equipment, the worker injects the mother liquid into the drain pipe 4, and then inputs the high-temperature steam into the steam inlet pipe 53. The high-temperature steam flows into the heating chamber 52 through the steam inlet pipe 53. The high-temperature steam in the heating chamber 52 heats the mother liquid in the evaporation tank 2 by heat transfer.

[0047] The control system starts the drive motor 72, the output shaft of the drive motor 72 drives the stirring shaft 71 to rotate, and the stirring shaft 71 drives the stirring arc plate 73 to rotate synchronously. The mother liquid in the evaporation tank 2 is continuously stirred by the stirring arc plate 73. At the same time, the mother liquid is continuously heated and crystallized on the inner wall of the evaporation tank 2. The stirring arc plate 73 hangs off the crystals and transports them to one end of the discharge pipe 4.

[0048] At the same time, the steam generated by the evaporation of the mother liquor flows into the steam filter 60, and the steam filter 60 filters out harmful substances from the steam generated by the mother liquor. The steam flowing through the steam filter 60 flows into the plate heat exchanger 61 through the degassing pipe 63. At the same time, the cold water pipe 65 injects cooling water into the plate heat exchanger 61 through the cooling pipe 67. The cooling water that flows into the plate heat exchanger 61 through the cooling pipe 67 absorbs heat and then flows to the exhaust pipe 66 through the flow temperature pipe 68 and flows out.

[0049] The steam flowing in through the desteaming pipe 63 absorbs heat and is cooled in the plate heat exchanger 61. The steam cooled in the plate heat exchanger 61 flows into the water storage cylinder 62 through the collecting pipe 64. After the condensed water in the water storage cylinder 62 collects for a period of time, the control system starts the drainage pump 69, and the drainage pump 69 discharges the condensed water in the water storage cylinder 62 to the outside of the box body 1.

[0050] The control system starts the vacuum pump 9, which extracts the steam in the water storage cylinder 62 through the gas storage pipe 12 and inputs it into the gas-liquid separator 8 through the gas supply pipe 11. The gas-liquid separator 8 separates the steam into gas and liquid, and the air is discharged to the outside of the box 1 through the exhaust pipe 17.

[0051] The water separated by the gas-liquid separator 8 flows into the vacuum plate heat exchanger 10 through the reflux pipe 13, the cold source pipe 15 and the hot flow pipe 16 continuously exchange heat and cool the vacuum plate heat exchanger 10, and the water condensed from the steam extracted by the vacuum pump 9 flows into the vacuum plate heat exchanger 10 through the cold flow pipe 14, and finally the condensate is discharged through the water outlet on the vacuum plate heat exchanger 10.

[0052] After the mother liquor evaporates for a period of time, the worker starts the cylinder 19 through the control system. The piston rod of the cylinder 19 drives the valve plate 20 to open the drain pipe 4. The mother liquor remaining in the evaporator 2 is discharged through the drain pipe 4 together with the mother liquor crystals scraped off by the stirring arc blade 73 to the collection device outside the box 1 for storage.

[0053] Example 2 refer to Figure 5 The difference between this embodiment and embodiment 1 is that: a crystal row shell 21 is welded to the bottom of the evaporation tank 2, the crystal row shell 21 is connected to the inner wall of the evaporation tank 2, a crystal row shaft 22 coaxial with the piston rod of the cylinder 19 is rotatably connected to the crystal row shell 21, a spiral crystal row arc piece 23 is welded to the crystal row shaft 22, and a linkage shaft rod 24 with a polygonal cross section is coaxially slidably matched with the crystal row shaft 22.

[0054] Reference Figure 5 The valve plate 20 is welded to the linkage shaft 24, and the linkage shaft 24 is rotatably welded to the piston rod of the cylinder 19. A rotating member 25 for driving the linkage shaft 24 to rotate is arranged on the end seat 18. The rotating member 25 includes a support plate 251 welded to the end seat 18, and a pulley 252 is rotatably connected to the support plate 251.

[0055] Reference Figure 5 A transmission belt 253 is wound around the pulley 252 and the stirring shaft 71. A transmission cone 254 with a regular polygonal cross section is coaxially welded on the linkage shaft 24. The transmission cone 254 is located between the valve plate 20 and the pulley 252. The cross section of the transmission cone 254 gradually decreases from the valve plate 20 to the pulley 252. A cone notch 255 is provided on the pulley 252 for the transmission cone 254 to be inserted. There is a gap between the cone notch 255 and the linkage shaft 24.

[0056] The implementation principle of Example 2 is as follows: after the mother liquid evaporates for a period of time, the worker stops the driving motor 72 through the control system, and then starts the cylinder 19 through the control system. The piston rod of the cylinder 19 pulls the linkage shaft 24, and the linkage shaft 24 slides along the axis of the crystal row shaft 22 in the direction close to the cylinder 19. At the same time, the linkage shaft 24 gradually drives the valve plate 20 to open the drain pipe 4, and the mother liquid in the evaporation tank 2 is discharged from the drain pipe 4 to the collection device outside the box 1.

[0057] At this time, the linkage shaft 24 will drive the transmission cone 254 to continuously approach the cone notch 255 until the transmission cone 254 is inserted into the cone notch 255 on the pulley 252. At this time, the control system starts the drive motor 72 again, and the drive motor 72 drives the stirring shaft 71 to rotate. The stirring arc piece 73 on the stirring shaft 71 will continuously transport the crystals remaining in the evaporation tank 2 to the crystal row shell 21.

[0058] At the same time, the stirring shaft 71 drives the pulley 252 to rotate through the transmission belt 253, and the pulley 252 drives the linkage shaft 24 to rotate synchronously through the transmission cone 254. The linkage shaft 24 drives the crystal row arc piece 23 to rotate through the crystal row shaft 22. The spiral crystal row arc piece 23 discharges the crystals accumulated in the crystal row shell 21 to the outside of the box body 1 through the drain pipe 4, thereby reducing the residual amount of mother liquor crystals in the evaporation tank 2.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mother liquor processor, characterized in that: The invention comprises a box body (1), an evaporation tank (2) is arranged on the box body (1), a liquid inlet pipe (3) and a liquid discharge pipe (4) are arranged on the evaporation tank (2), a heating component (5) is arranged on the box body (1), the heating component (5) is used to heat the evaporation tank (2), a degassing component (6) is arranged on the evaporation tank (2), the degassing component (6) is used to process the steam generated by the evaporation tank (2), and a stirring component (7) is arranged on the evaporation tank (2), the stirring component (7) is used to stir the mother liquid in the evaporation tank (2).

2. A mother liquid processor according to claim 1, characterized in that: The heating assembly (5) comprises a heating shell (51) arranged on the evaporator (2), the heating shell (51) and the outer wall of the evaporator (2) enclosing a heating chamber (52), the casing (1) being provided with a steam inlet pipe (53) communicating with the interior of the heating shell (51), high-temperature steam flowing in the steam inlet pipe (53), the casing (1) being provided with a water exchange cylinder (54), the water exchange cylinder (54) being connected with the interior of the heating shell (51) via an exhaust pipe (55), the casing (1) being provided with an exhaust pump (56) communicating with the water exchange cylinder (54), the exhaust pump (56) being electrically connected to a control system.

3. A mother liquid processor according to claim 2, characterized in that: The degassing assembly (6) comprises a steam filter (60) connected to the evaporation tank (2); a plate heat exchanger (61) and a water storage cylinder (62) are provided on the housing (1); a degassing pipe (63) is connected between the steam filter (60) and the plate heat exchanger (61); a liquid collecting pipe (64) is connected between the water storage cylinder (62) and the plate heat exchanger (61); a cold water pipe (65) and a temperature discharge pipe (66) are provided on the housing (1); a cooling pipe (67) is connected between the cold water pipe (65) and the plate heat exchanger (61); a flow temperature pipe (68) is connected between the temperature discharge pipe (66) and the plate heat exchanger (61); a liquid discharge pump (69) connected to the water storage cylinder (62) is provided on the housing (1); and the liquid discharge pump (69) is electrically connected to a control system.

4. A mother liquid processor according to claim 2, characterized in that: The stirring assembly (7) comprises a stirring shaft (71) coaxially rotatably arranged on the evaporation tank (2); a driving motor (72) electrically connected to a control system is arranged on the housing (1); the stirring shaft (71) is coaxially arranged on an output shaft of the driving motor (72); a spiral stirring arc piece (73) is arranged on the stirring shaft (71); and the spiral outer edge of the stirring arc piece (73) is in close contact with the inner wall of the evaporation tank (2).

5. A mother liquid processor according to claim 3, characterized in that: The housing (1) is provided with a gas-liquid separator (8), a vacuum pump (9) and a vacuum plate heat exchanger (10); an air supply pipe (11) is connected between the gas-liquid separator (8) and the vacuum pump (9); an air storage pipe (12) is connected between the vacuum pump (9) and the top of the water storage cylinder (62); a return pipe (13) is connected between the gas-liquid separator (8) and the vacuum plate heat exchanger (10); a cold flow pipe (14) is connected between the vacuum pump (9) and the vacuum plate heat exchanger (10); a cold source pipe (15) is connected between the cold water pipe (65) and the vacuum plate heat exchanger (10); a heat flow pipe (16) is connected between the exhaust pipe (66) and the vacuum plate heat exchanger (10); and an exhaust pipe (17) connected to the outside of the housing (1) is provided on the gas-liquid separator (8).

6. A mother liquid processor according to claim 4, characterized in that: The evaporator (2) is provided with an end seat (18), the liquid discharge pipe (4) is located at an end of the evaporator (2) facing away from the drive motor (72), the end seat (18) is provided with a cylinder (19) electrically connected to a control system, a valve plate (20) is coaxially slidably provided on the liquid discharge pipe (4), the valve plate (20) is used to block the liquid discharge pipe (4), and the valve plate (20) is provided on a piston rod of the cylinder (19).

7. A mother liquid processor according to claim 6, characterized in that: The evaporation tank (2) is provided with a crystal row shell (21), the crystal row shell (21) is communicated with the inner side wall of the evaporation tank (2), a crystal row shaft (22) coaxial with the piston rod of the cylinder (19) is rotatably provided on the crystal row shell (21), a spiral crystal row arc sheet (23) is provided on the crystal row shaft (22), a linkage shaft (24) with a polygonal cross section is coaxially slidably provided on the crystal row shaft (22), the valve plate (20) is provided on the linkage shaft (24), the linkage shaft (24) is rotatably provided on the piston rod of the cylinder (19), and a rotating member (25) for driving the linkage shaft (24) to rotate is provided on the end seat (18).

8. A mother liquid processor according to claim 7, characterized in that: The rotating member (25) comprises a support plate (251) arranged on the end seat (18), a pulley (252) being rotatably arranged on the support plate (251), a transmission belt (253) being wound around the pulley (252) and the stirring shaft (71), a transmission cone (254) having a regular polygonal cross section being arranged on the linkage shaft (24), the transmission cone (254) being located between the valve plate (20) and the pulley (252), the cross section of the transmission cone (254) gradually becoming smaller along the direction from the valve plate (20) to the pulley (252), a cone notch (255) being provided on the pulley (252) for the transmission cone (254) to be inserted, and a gap being present between the cone notch (255) and the linkage shaft (24).

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