A concentration crystallization tank and concentration crystallization method for producing medicinal boric acid

Abstract

The present invention provides a concentrated crystallization tank for producing medicinal boric acid, comprising a crystallization component, wherein the top of the crystallization component is connected to a temperature control component through a water inlet pipe 1 and a water inlet pipe 2, the bottom of the temperature control component is connected to a drain pipe 1 and a drain pipe 2, the end of the drain pipe 1 facing away from the temperature control component is connected to the interior of the crystallization component, the end of the drain pipe 2 facing away from the temperature control component is connected to a power pump group, the water inlet end of the power pump group is connected to the bottom of the crystallization component through a group of water pipes, the temperature control component inputs water inside the crystallization component into itself through the drain pipe 1 and the drain pipe 2 and controls the temperature, and then returns the water to the interior of the crystallization component through the water inlet pipe 1 and the water inlet pipe 2. The present invention realizes continuous crystallization and improves crystallization efficiency. At the same time, only the water source in the trumpet tank needs to be heated, which effectively reduces energy use, and the amount of crystals contained in the solution transported by the pump group is very small, which effectively reduces the wear of the pump group.

Description

Technical Field

[0001] The invention relates to the technical field of medicinal boric acid purification, in particular to a concentration crystallization tank for medicinal boric acid production and a concentration crystallization method. Background Art

[0002] Boron is an important chemical raw material. Currently, the boron needed by various industries primarily comes from boron ore, which can be made into borax, boric acid, and other products. Boric acid, as a leading boron product, has been widely used in industries such as glass, enamel, and pharmaceuticals. In particular, it enjoys a huge market in the pharmaceutical industry as an antibacterial preservative, disinfectant, and pH regulator.

[0003] For example, application number CN202211258358.5 discloses a calcium sulfate concentration crystallization kettle based on biotechnology, which specifically includes: a crystallization kettle; a concave-convex platform is provided inside the crystallization kettle, a motor is installed on the top of the crystallization kettle, and an upper shaft is installed on the driving shaft of the motor, and the upper shaft is connected to the inside of the crystallization kettle; a lower shaft is installed inside the crystallization kettle, and the lower shaft is connected to the upper shaft, and two mixing impellers are provided at the bottom end of the lower shaft; an outer ring is installed on the outer side of the upper shaft, and bolts are installed inside the outer ring, and the bolts are connected to the lower shaft; multiple channels are respectively installed at the upper and lower ends of the crystallization kettle; a heat exchanger, both ends of the heat exchanger are respectively connected to two multiple channels, and a pump body and a voltage stabilizer are respectively installed on the pipelines of the heat exchanger; a thermostat, the interior of the thermostat is hollow, and the heat exchanger is located inside the thermostat, and hot water enters the thermostat through hot and cold inlets to perform heat exchange on the fluid medium entering the heat exchanger Heating, the pump body transports the fluid medium inside the heat exchanger to the heat exchange inner tube, which has a surrounding cooling effect on the inside of the crystallization kettle, so that the inside of the crystallization kettle can reach the required dissolution temperature of calcium sulfate in a short time, thereby promoting the dissolution efficiency of calcium sulfate. When the inside of the crystallization kettle needs to be cooled, cold water enters the temperature regulating box through the hot and cold inlets to cool the fluid medium entering the heat exchanger. The pump body transports the fluid medium inside the heat exchanger to the heat exchange inner tube, which has a surrounding cooling effect on the inside of the crystallization kettle, so that the inside of the crystallization kettle can reach the required precipitation crystallization temperature of calcium sulfate in a short time, thereby promoting the crystallization efficiency of calcium sulfate, shortening the time required for calcium sulfate concentration and crystallization, and improving the purification efficiency of calcium sulfate. The heating effect inside the crystallization kettle is indirectly achieved by heating the fluid medium inside the heat exchanger with hot water. The hot water does not contact the heat exchange inner tube inside the crystallization kettle, thereby avoiding the occurrence of scale adhesion on the heat exchange inner tube.

[0004] However, although the above-mentioned concentrated crystallization kettle can avoid the adhesion of scale, it still has some shortcomings: during crystallization, all solutions in the crystallization kettle need to be temperature-regulated, resulting in high energy consumption; continuous crystallization requires repeated heating and cooling operations, which seriously affects the efficiency of crystallization; at the same time, the temperature regulation time is short, so that crystallization affects the pump group, thereby increasing the wear of the pump group. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides the following technical solutions: a concentrated crystallization tank for producing medicinal boric acid, comprising a crystallization assembly, wherein the top of the crystallization assembly is connected to a temperature control assembly via a first water inlet pipe and a second water inlet pipe, the bottom of the temperature control assembly is connected to a first drain pipe and a second drain pipe, the end of the first drain pipe facing away from the temperature control assembly is connected to the interior of the crystallization assembly, the end of the second drain pipe facing away from the temperature control assembly is connected to a power pump group, the water inlet end of the power pump group is connected to the bottom of the crystallization assembly via a group of water pipes, the temperature control assembly inputs water from the interior of the crystallization assembly into itself via the first drain pipe and the second drain pipe and controls the temperature, and then returns the water to the interior of the crystallization assembly via the first water inlet pipe and the second water inlet pipe;

[0007] The crystallization assembly includes a crystallization tank, the outside of which is fixedly connected to a water outlet assembly, an inner cavity of the crystallization tank being vertically spaced apart with a balancing ring, a crystallization plate, a slow flow plate and a water spray disc, the bottom of the crystallization tank being detachably fixedly connected to a trumpet tank, and the top of the trumpet tank being fixedly connected to a filter screen;

[0008] One end of the water inlet pipe facing away from the temperature control component passes through the top of the crystallization component and is fixedly connected to the upper part of the balancing ring. One end of the water inlet pipe facing away from the temperature control component is connected to the direct current pipe. One end of the direct current pipe facing away from the water inlet pipe passes through the crystallization plate and the slow flow plate and is connected to the water spray disk. Several groups of water holes are opened at the bottom of the water spray disk. The distance between the water spray disk and the filter is 2-3 cm.

[0009] As a preference of this embodiment, a plurality of through holes are opened at the bottom of the balancing ring, the crystallization plate protrudes toward one side of the balancing ring, and an elastic sealing ring is fixedly connected to the bottom of the crystallization plate.

[0010] As a preferred embodiment of this embodiment, the water outlet assembly includes a regulating box, a servo motor is installed on the upper end surface of the regulating box, and the output end of the servo motor is fixedly connected to an overflow pipe. A mounting groove is opened on one side of the regulating box, and several groups of water retaining pads corresponding to the positions are arranged at intervals on both sides of the inner wall of the mounting groove. A screw is formed between the two groups of water retaining pads corresponding to the inner wall of the mounting groove. The regulating box is slidably connected to the overflow assembly through the mounting groove, and a water pump is installed at the bottom of the inner cavity of the regulating box, and the output end of the water pump is connected to the end of the drain pipe away from the temperature control assembly.

[0011] As a preferred embodiment of this invention, the overflow assembly includes an elastic extrusion plate, a screw and a horn groove. The elastic extrusion plate and the screw are respectively arranged on the inner side and the outside of the mounting groove, and the elastic extrusion plate and the screw clamp several groups of water retaining pads. One side of the elastic extrusion plate is opened, and one end of the horn groove passes through the elastic extrusion plate, and the other end of the horn groove passes through the side adjacent to the screw and the elastic extrusion plate and passes out from the bottom of the screw.

[0012] As a preference of this embodiment, the overflow pipe passes through the upper end surface of the screw, the gap between several groups of the water retaining pads is half the thickness of the water retaining pads, and a tooth-shaped gap is provided between two groups of the water retaining pads at corresponding positions.

[0013] As a preference of this embodiment, the temperature control assembly includes an outer shell, the inner cavity of the outer shell is fixedly connected to a temperature control core, and a coil is spirally wound on the outside of the temperature control core.

[0014] As a preference of this embodiment, the cross-section of the coil is semi-elliptical, one end of the coil is connected to the first water inlet pipe, and the other end is connected to the second drain pipe.

[0015] As a preferred embodiment of this embodiment, the temperature control core includes a waterproof layer and two groups of partitions, a semiconductor refrigeration plate is installed inside the waterproof layer, the waterproof layer is surrounded by a circular tube, the two groups of partitions are fixedly connected to the top and bottom of the circular tube respectively, and a water retaining core is arranged between the two groups of partitions, and the two ends of the water retaining core are fixedly connected to the two groups of partitions respectively through fixing plates.

[0016] As a preference of this embodiment, a gap is provided between the water retaining core and the partition plate and the circular tube, and the second water inlet pipe and the first drain pipe are connected to the gap.

[0017] As a preferred embodiment of the present invention, a method for concentrating and crystallizing medicinal boric acid is provided, which adopts the above-mentioned concentrated crystallization tank for producing medicinal boric acid. First, the raw materials are placed above the filter screen inside the crystallization component, and then water is added to the crystallization component. The position of the overflow component is adjusted by the servo motor so that the water inside the crystallization component can overflow into the regulating box through the horn groove. The water overflowing into the regulating box is input into the temperature control component by a water pump for heating. The heated water is sent into the water spray disk through the second water inlet pipe and the direct current pipe, and then sprayed onto the raw materials on the filter screen through the water spray disk and mixed with them. At the same time, the water inside the horn tank is heated. After heating for a period of time, the power pump group is started to extract the solution with higher concentration inside the horn tank, and the solution is sent into the coil through the second drain pipe for cooling. Crystals will form in the cooled solution and flow into the equalizing ring through the first water inlet pipe, and then drip onto the crystallization plate. The crystallization plate will filter out the raw materials crystallized in the solution, and the solution will be reused. When there are too many impurities on the surface of the filter screen affecting the flow or the crystallization plate filters out too many crystals, all the solution inside the crystallization component is extracted, the horn tank is removed, the crystals are taken out or the filter screen is replaced.

[0018] (2) Beneficial effects

[0019] The present invention provides a concentration crystallization tank and a concentration crystallization method for producing medicinal boric acid, which have the following beneficial effects: a solution with a low top temperature and a small solubility is passed through an overflow channel into the interior of a regulating box, the low-temperature and low-solubility solution can effectively reduce damage to a water pump, and then is pumped into a gap inside a temperature control core by the water pump for heating. The heated low-solubility solution impacts undissolved raw materials on a filter screen through a water spray disk, accelerating the dissolution of the raw materials while heating the solution inside the horn tank. After the high-temperature and high-solubility solution is extracted through the horn tank, it is passed into the interior of a temperature control component for cooling, causing crystals to form inside the solution. The crystals flow into an equalizing ring with the solution and evenly fall onto a crystallization plate through through holes to filter out the crystals. The device can complete the crystallization of boric acid without heating all the water inside the crystallization tank, effectively reducing energy consumption.

[0020] At the same time, the filtered water will flow back into the crystallization tank to form a crystallization water flow cycle, so that the device does not need to be replenished with water. It only needs to continuously add boric acid raw materials to form a crystallization cycle, which effectively increases the crystallization speed.

[0021] At the same time, the water pump inside the regulating box pumps out a low-temperature, low-solubility solution, and the power pump group pumps out a high-temperature, high-solubility solution, so that the amount of dissolved crystals inside the water pump and the power pump group is very small, effectively reducing the wear on the pump group. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a concentration crystallization tank for producing medicinal boric acid of the present invention;

[0023] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a crystal assembly of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the balancing ring and the water inlet pipe of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the water outlet assembly of the present invention;

[0026] Figure 5 This is a schematic cross-sectional structural diagram of the regulating box of the present invention;

[0027] Figure 6 for Figure 5 A magnified view of the structure;

[0028] Figure 7 It is a schematic structural diagram of the overflow assembly of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the elastic extrusion plate of the present invention;

[0030] Figure 9 Schematic diagram of the internal structure of the temperature control component of the present invention;

[0031] Figure 10 It is a schematic diagram of the temperature control core structure of the present invention.

[0032] In the figure: 1 crystallization assembly, 11 crystallization tank, 12 water outlet assembly, 121 regulating box, 122 servo motor, 123 water retaining pad, 124 elastic extrusion plate, 125 serrated gap, 126 screw, 127 overflow pipe, 128 horn groove, 13 DC pipe, 14 balancing ring, 15 crystallization plate, 16 slow flow plate, 17 sprinkler head, 18 horn tank, 19 filter screen, 2 water inlet pipe 1, 3 water inlet pipe 2, 4 temperature control assembly, 41 outer shell, 42 temperature control core, 421 waterproof layer, 422 partition, 423 semiconductor refrigeration plate, 424 water retaining core, 43 coil, 5 drainage pipe 1, 6 drainage pipe 2, 7 power pump group. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] like Figure 1-4 As shown, this embodiment provides a concentrated crystallization tank for the production of medicinal boric acid, including a crystallization component 1, the top of the crystallization component 1 is connected to the temperature control component 4 through a water inlet pipe 1 2 and a water inlet pipe 2 3, the bottom of the temperature control component 4 is connected to a drain pipe 1 5 and a drain pipe 2 6, the end of the drain pipe 1 5 away from the temperature control component 4 is connected to the interior of the crystallization component 1, the end of the drain pipe 2 6 away from the temperature control component 4 is connected to a power pump group 7, the water inlet end of the power pump group 7 is connected to the bottom of the crystallization component 1 through a group of water pipes, the temperature control component 4 inputs the water inside the crystallization component 1 into itself through the drain pipe 1 5 and the drain pipe 2 6 and controls the temperature, and then returns it to the interior of the crystallization component 1 through the water inlet pipe 1 2 and the water inlet pipe 2 3;

[0039] The crystallization assembly 1 includes a crystallization tank 11, the outside of the crystallization tank 11 is fixedly connected to a water outlet assembly 12, the inner cavity of the crystallization tank 11 is vertically spaced in sequence with a balancing ring 14, a crystallization plate 15, a slow flow plate 16 and a water spray disc 17, the bottom of the crystallization tank 11 is detachably fixedly connected to a trumpet tank 18, and the top of the trumpet tank 18 is fixedly connected to a filter screen 19;

[0040] The end of the water inlet pipe 1 2 facing away from the temperature control component 4 passes through the top of the crystallization component 1 and is fixedly connected to the upper part of the balancing ring 14. The end of the water inlet pipe 2 3 facing away from the temperature control component 4 is connected to the direct current pipe 13. The end of the direct current pipe 13 facing away from the water inlet pipe 2 3 passes through the crystallization plate 15 and the slow flow plate 16 and is connected to the water spray plate 17. Several groups of water holes are opened at the bottom of the water spray plate 17. The distance between the water spray plate 17 and the filter screen 19 is 2-3 cm.

[0041] Specifically, the boric acid raw material is placed on the upper part of the filter 19 through a conduit, and then water is added to the inside of the crystallization component 1. The boric acid naturally dissolves in the water to form a boric acid solution. After the solution at the top is extracted and heated, the heated solution is directed to the boric acid raw material through a water spray plate 17 to accelerate the dissolution of the boric acid raw material. The heated solution will pass through the filter 19 to heat the solution inside the horn tank 18. When the solution inside the horn tank 18 is heated to a certain temperature, the solution is extracted through the power pump group 7, and then cooled through the temperature control component 4, and the solution naturally crystallizes.

[0042] It is understandable that the amount of boric acid added is greater than the maximum solubility of water inside the crystallization assembly 1 , and the equalization ring 14 can help the boric acid solution with crystals to fall evenly onto the crystallization plate 15 .

[0043] It should be noted that the conduit for the user to add boric acid raw materials is connected to the gap between the water spray disk 17 in the inner cavity of the crystallization tank 11 and the filter 19, and the conduit for adding water is connected to the bottom of the crystallization plate 15 in the inner cavity of the crystallization tank 11. The water spray disk 17 is specifically a pressurized nozzle.

[0044] Furthermore, a plurality of through holes are formed at the bottom of the balancing ring 14 , and the crystallization plate 15 protrudes toward one side of the balancing ring 14 . An elastic sealing ring is fixedly connected to the bottom of the crystallization plate 15 .

[0045] It is understandable that the sealing ring is fixedly connected to the edge of the bottom of the crystallization plate 15 , and the maximum water addition amount inside the crystallization tank 11 is located below the crystallization plate 15 .

[0046] Specifically, the convex crystallization plate 15 allows the solution containing boric acid crystals to fall along the trajectory of the crystallization plate 15 when it falls on the crystallization plate 15. The crystals are then filtered by the crystallization plate 15, and the solution passes through the crystallization plate 15 and falls into the water inside the crystallization tank 11.

[0047] like Figure 4-8As shown, the water outlet assembly 12 includes a regulating box 121, a servo motor 122 is installed on the upper end surface of the regulating box 121, and an overflow pipe 127 is fixedly connected to the output end of the servo motor 122. A mounting groove is provided on one side of the regulating box 121, and several groups of water retaining pads 123 corresponding to the positions are arranged at intervals on both sides of the inner wall of the mounting groove. A screw 126 is formed between the two groups of water retaining pads 123 corresponding to the inner wall of the mounting groove. The regulating box 121 is slidably connected to the overflow assembly through the mounting groove, and a water pump is installed at the bottom of the inner cavity of the regulating box 121. The output end of the water pump is connected to the end of the drain pipe 5 away from the temperature control assembly 4.

[0048] Furthermore, the overflow assembly includes an elastic extrusion plate 124, a screw 126 and a horn groove 128. The elastic extrusion plate 124 and the screw 126 are respectively arranged on the inner and outer sides of the mounting groove, and the elastic extrusion plate 124 and the screw 126 clamp several groups of water retaining pads 123. A 129 is opened on one side of the elastic extrusion plate 124, and one end of the horn groove 128 passes through the elastic extrusion plate 124 through 129, and the other end of the horn groove 128 passes through the side adjacent to the screw 126 and the elastic extrusion plate 124 and passes out from the bottom of the screw 126.

[0049] Furthermore, the overflow pipe 127 passes through the upper end surface of the screw rod 126 , the gap between the groups of water retaining pads 123 is half the thickness of the water retaining pads 123 , and a tooth-shaped gap 125 is provided between two groups of water retaining pads 123 at corresponding positions.

[0050] Specifically, the overflow pipe 127 is driven by the servo motor 122, so that the horn groove 128 on the overflow component and the solution inside the crystallization tank 11 can naturally flow into the regulating box 121, and then the water inside the regulating box 121 is pumped out by the water pump and sent into the temperature control component 4 through the drain pipe 5 for heating.

[0051] Furthermore, the serrated gaps 125 between the groups of water retaining pads 123 can prevent water from flowing out of the regulating box 121 , and the elastic extrusion plate 124 , the screw 126 and the bell-mouth design 129 can prevent water from flowing out through the deformation of the water retaining pad 123 caused by the bell groove 128 .

[0052] like Figure 9 and Figure 10 As shown, the temperature control assembly 4 includes an outer shell 41 , an inner cavity of the outer shell 41 is fixedly connected to a temperature control core 42 , and a coil 43 is spirally wound around the outer portion of the temperature control core 42 .

[0053] Furthermore, the cross-section of the coil 43 is semi-elliptical, one end of the coil 43 is connected to the water inlet pipe 1 2, and the other end is connected to the drain pipe 2 6.

[0054] Furthermore, the temperature control core 42 includes a waterproof layer 421 and two groups of partitions 422. A semiconductor refrigeration plate 423 is installed inside the waterproof layer 421. The waterproof layer 421 is surrounded by a circular tube. The two groups of partitions 422 are fixedly connected to the top and bottom of the circular tube respectively. A water-blocking core 424 is arranged between the two groups of partitions 422. The two ends of the water-blocking core 424 are fixedly connected to the two groups of partitions 422 respectively through fixing plates.

[0055] Furthermore, a gap is provided between the water retaining core 424 and the partition 422 and the circular tube, and the water inlet pipe 2 3 and the drainage pipe 1 5 are connected to the gap.

[0056] Specifically, by adjusting the position of the overflow component, the solution inside the crystallization tank 11 is passed into the regulating box 121, and then the water inside the regulating box 121 is input into the temperature control core 42 through the water pump. The semiconductor refrigeration plate 423 will heat the water inside the temperature control core 42, and then input it into the water spray disk 17 through the water inlet pipe 2 3 and the direct current pipe 13. The water spray disk 17 will impact the raw materials above the filter 19 with the heated water in an impact manner. The solubility of the raw materials increases with temperature and impact stirring, and at the same time, the solution inside the horn tank 18 is heated. Due to the impact force and sufficient raw materials, the solution inside the horn tank 18 will quickly dissolve enough raw materials, and the filter 19 will block impurities in the raw materials. Then the power pump group 7 will draw the heated solution into the coil 43 and be cooled by the semiconductor refrigeration plate 423. Crystals will form in the cooled solution, and then they will be input into the equalizing ring 14 through the water inlet pipe 1 2 together with the solution, and then drip onto the crystallization plate 15 to complete the crystallization filtration.

[0057] It can be understood that the slow flow plate 16 will block the impact of the water spray plate 17 on the inner cavity of the crystallization tank 11, avoiding large-scale fluctuations in the water above the slow flow plate 16. At the same time, the semi-elliptical coil 43 can increase the contact area with the temperature control core 42 and improve the cooling effect.

[0058] As a preferred embodiment of the present invention, a method for concentrating and crystallizing medicinal boric acid is provided, which adopts the above-mentioned concentrated crystallization tank for producing medicinal boric acid. First, the raw materials are placed above the filter screen 19 inside the crystallization component 1, and then water is added to the inside of the crystallization component 1. The position of the overflow component is adjusted by the servo motor 122 so that the water inside the crystallization component 1 can overflow into the inside of the regulating box 121 through the horn groove 128. The water overflowing into the regulating box 121 is input into the temperature control component 4 by a water pump for heating. The heated water is sent into the water spray plate 17 through the water inlet pipe 2 3 and the direct current pipe 13, and then sprayed onto the raw materials on the filter screen 19 through the water spray plate 17 and mixed with the raw materials. The water inside the horn tank 18 is heated at the same time. After heating for a period of time, the power pump group 7 is started to extract the solution with higher concentration inside the horn tank 18, and send it to the coil 43 through the drain pipe 2 for cooling. Crystals will form in the cooled solution and flow into the equalizing ring 14 through the water inlet pipe 12, and then drip onto the crystallization plate 15. The crystallization plate 15 will filter out the raw materials of crystallization in the solution, and the solution will be reused. When there are too many impurities on the surface of the filter screen 19 affecting the flow rate or the crystallization plate 15 filters out too many crystals, all the solution inside the crystallization component 1 is extracted, the horn tank 18 is removed, the crystals are taken out or the filter screen 19 is replaced.

[0059] In summary, the concentrated crystallization tank and concentrated crystallization method for producing medicinal boric acid disclosed in the present application, by overflowing the solution with low temperature and small solubility at the top into the flow channel regulating box 121, the low-temperature and low-solubility solution can effectively reduce the damage to the water pump, and then the solution is pumped into the gap inside the temperature control core 42 by the water pump for heating, and the heated low-solubility solution impacts the undissolved raw materials on the filter screen 19 through the water spray disk 17, while accelerating the dissolution of the raw materials and heating the solution inside the horn tank 18, after the high-temperature and high-solubility solution is extracted through the horn tank 18, it is passed into the temperature control component 4 for cooling, so that crystals are generated inside the solution, and the crystals flow into the equalizing ring 14 with the solution, and fall evenly onto the crystallization plate 15 through the through hole to filter out the crystals, so that the device can complete the crystallization of boric acid without heating all the water inside the crystallization tank 11, effectively reducing energy consumption;

[0060] At the same time, the filtered water will flow back into the crystallization tank 11 to form a crystallization water flow cycle, so that the device does not need to be replenished with water, and only needs to continuously add boric acid raw materials to form a crystallization cycle, which effectively increases the crystallization speed;

[0061] At the same time, the water pump inside the regulating box 121 extracts a low-temperature, low-solubility solution, and the power pump group 7 extracts a high-temperature, high-solubility solution, so that the amount of dissolved crystals inside the water pump and the power pump group 7 is very small, effectively reducing the wear on the pump group.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A concentration crystallization tank for producing medicinal boric acid, characterized by: The invention comprises a crystallization component (1), wherein the top of the crystallization component (1) is connected to the temperature control component (4) through a water inlet pipe (2) and a water inlet pipe (3), the bottom of the temperature control component (4) is connected to a drain pipe (5) and a drain pipe (6), the end of the drain pipe (5) away from the temperature control component (4) is connected to the inside of the crystallization component (1), the end of the drain pipe (6) away from the temperature control component (4) is connected to a power pump group (7), the water inlet end of the power pump group (7) is connected to the bottom of the crystallization component (1) through a group of water pipes, the temperature control component (4) inputs the water inside the crystallization component (1) into itself through the drain pipe (5) and the drain pipe (6) and performs temperature control, and then returns the water to the inside of the crystallization component (1) through the water inlet pipe (2) and the water inlet pipe (3); The crystallization assembly (1) comprises a crystallization tank (11), the outside of the crystallization tank (11) is fixedly connected to a water outlet assembly (12), the inner cavity of the crystallization tank (11) is vertically spaced and sequentially provided with a balancing ring (14), a crystallization plate (15), a slow flow plate (16) and a water spray plate (17), the bottom of the crystallization tank (11) is detachably fixedly connected to a trumpet tank (18), and the top of the trumpet tank (18) is fixedly connected to a filter screen (19); One end of the water inlet pipe 1 (2) facing away from the temperature control component (4) passes through the top of the crystallization component (1) and is fixedly connected to the upper part of the balancing ring (14); one end of the water inlet pipe 2 (3) facing away from the temperature control component (4) is connected to the direct current pipe (13); one end of the direct current pipe (13) facing away from the water inlet pipe 2 (3) passes through the crystallization plate (15) and the slow flow plate (16) and is connected to the water spray plate (17); a plurality of water holes are provided at the bottom of the water spray plate (17); the distance between the water spray plate (17) and the filter screen (19) is 2-3 cm; The water outlet assembly (12) includes a regulating box (121), a servo motor (122) is installed on the upper end surface of the regulating box (121), and the output end of the servo motor (122) is fixedly connected to an overflow pipe (127). A mounting groove is provided on one side of the regulating box (121), and a plurality of groups of water retaining pads (123) corresponding to positions are arranged at intervals on both sides of the inner wall of the mounting groove. A screw (126) is formed between two groups of water retaining pads (123) corresponding to the inner wall of the mounting groove. The regulating box (121) is slidably connected to the overflow assembly through the mounting groove. A water pump is installed at the bottom of the inner cavity of the regulating box (121), and the output end of the water pump is connected to the end of the drain pipe (5) away from the temperature control assembly (4).

2. The concentrated crystallization tank for producing medicinal boric acid according to claim 1, characterized in that: The bottom of the balancing ring (14) is provided with a plurality of through holes, the crystallization plate (15) protrudes toward one side of the balancing ring (14), and the bottom of the crystallization plate (15) is fixedly connected with an elastic sealing ring.

3. The concentration and crystallization tank for producing medicinal boric acid according to claim 1, characterized in that: The overflow assembly includes an elastic extrusion plate (124), a screw (126) and a horn groove (128), wherein the elastic extrusion plate (124) and the screw (126) are respectively arranged on the inner side and the outer side of the mounting groove, and the elastic extrusion plate (124) and the screw (126) clamp a plurality of water retaining pads (123), a through groove (129) is provided on one side of the elastic extrusion plate (124), one end of the horn groove (128) passes through the elastic extrusion plate (124) through the through groove (129), and the other end of the horn groove (128) passes through the side of the screw (126) adjacent to the elastic extrusion plate (124) and passes out from the bottom of the screw (126).

4. The concentration crystallization tank for producing medicinal boric acid according to claim 3, characterized in that: The overflow pipe (127) passes through the upper end surface of the screw (126), the gap between the groups of water retaining pads (123) is half the thickness of the water retaining pads (123), and a tooth-shaped gap (125) is provided between two groups of water retaining pads (123) at corresponding positions.

5. The concentration crystallization tank for producing medicinal boric acid according to claim 1, characterized in that: The temperature control assembly (4) comprises an outer shell (41), the inner cavity of the outer shell (41) is fixedly connected to a temperature control core (42), and the outer portion of the temperature control core (42) is spirally wound with a coil (43).

6. The concentration and crystallization tank for producing medicinal boric acid according to claim 5, characterized in that: The cross section of the coil (43) is semi-elliptical, and one end of the coil (43) is connected to the water inlet pipe 1 (2), and the other end is connected to the drain pipe 2 (6).

7. The concentration and crystallization tank for producing medicinal boric acid according to claim 6, characterized in that: The temperature control core (42) comprises a waterproof layer (421) and two groups of partitions (422), a semiconductor refrigeration plate (423) is installed inside the waterproof layer (421), the waterproof layer (421) is surrounded by a circular tube, the two groups of partitions (422) are fixedly connected to the top and bottom of the circular tube respectively, a water retaining core (424) is provided between the two groups of partitions (422), and both ends of the water retaining core (424) are fixedly connected to the two groups of partitions (422) respectively through fixing plates.

8. The concentration and crystallization tank for producing medicinal boric acid according to claim 7, characterized in that: A gap is provided between the water retaining core (424), the partition (422) and the circular tube, and the second water inlet pipe (3) and the first drainage pipe (5) are connected to the gap.

9. A method for concentrating and crystallizing medicinal boric acid, using the concentrating and crystallizing tank for producing medicinal boric acid according to any one of claims 1 to 8, characterized in that: First, the raw materials are placed above the filter screen (19) inside the crystallization component (1), and then water is added to the crystallization component (1). The position of the overflow component is adjusted by the servo motor (122) so that the water inside the crystallization component (1) can overflow into the regulating box (121) through the horn groove (128). The water overflowing into the regulating box (121) is input into the temperature control component (4) through the water pump for heating. The heated water is sent to the inside of the water spray plate (17) through the water inlet pipe (3) and the direct current pipe (13). The water is then sprayed onto the raw materials on the filter screen (19) through the water spray plate (17) and mixed with the raw materials. At the same time, the water inside the horn tank (18) is heated, and the water is continuously added. After a period of heating, the power pump group (7) is started to extract the solution with a higher concentration from the trumpet tank (18) and send it to the coil (43) through the drain pipe (6) for cooling. Crystals will form in the cooled solution and flow through the water inlet pipe (2) to the inside of the equalizing ring (14), and then drip onto the crystallization plate (15). The crystallization plate (15) will filter out the crystallized raw materials in the solution, and the solution will be reused. When the impurities on the surface of the filter (19) affect the flow rate or the crystallization plate (15) filters out too many crystals, all the solution in the crystallization component (1) is extracted, the trumpet tank (18) is removed, the crystals are taken out or the filter (19) is replaced.

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