Automatically-controlled ammonium bifluoride production system

Abstract

Belonging to the technical field of ammonium bifluoride production, the invention discloses an automatically controlled ammonium bifluoride production system, which comprises a cylinder, a stirring mechanism, a temperature regulation mechanism and a circulating filtration mechanism. The stirring mechanism is mounted on the cylinder body and is used for stirring the ammonium fluoride saturated solution in the cylinder body; the stirring mechanism comprises a hollow rod penetrating through the top surface of the barrel and rotationally connected with the barrel, and a gas injection pipe rotationally connected with the upper end of the hollow rod, and the gas injection pipe is used for conveying anhydrous hydrogen fluoride into the hollow rod. According to the automatic control ammonium bifluoride production system disclosed by the invention, the stirring mechanism is arranged, so that the ammonium fluoride saturated solution in the barrel is conveniently stirred, the contact area of the ammonium fluoride saturated solution and anhydrous hydrogen fluoride is increased, and the reaction rate is further increased.

Description

Technical Field

[0001] The invention belongs to the technical field of ammonium bifluoride production, and in particular relates to an ammonium bifluoride production system with automatic control. Background Art

[0002] As an important inorganic compound, ammonium bifluoride is widely used in many industrial fields, such as glass etchant, preservative, solvent for making metallic beryllium from beryllium oxide, chemical reagent, cleaning agent for boiler feed water system and steam generation system, disinfectant for fermentation industry, surface treatment agent for silicon steel plate, oxidant for manufacturing ceramics and aluminum-magnesium alloy, etc.

[0003] Traditional ammonium bifluoride production methods mostly use liquid phase method or gas phase method. Among them, the liquid phase method is widely used because of its simple equipment, low investment and convenient operation. The liquid phase method is to first react anhydrous hydrogen fluoride with a saturated ammonium fluoride solution, and then cool, crystallize, filter and dry to obtain ammonium bifluoride.

[0004] However, when the existing equipment uses the liquid phase method in production, the contact area between anhydrous hydrogen fluoride and saturated ammonium fluoride solution is small, which leads to a low reaction rate between the two, which needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide an ammonium bifluoride production system with automatic control, which is used to solve the technical problem in the prior art that when using a liquid phase method for production, the contact area between anhydrous hydrogen fluoride and a saturated ammonium fluoride solution is small, thereby resulting in a low reaction rate.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The invention discloses an ammonium bifluoride production system with automatic control, comprising: a cylinder for containing a saturated ammonium fluoride solution; a stirring mechanism installed on the cylinder for stirring the saturated ammonium fluoride solution in the cylinder, and comprising: a hollow rod penetrating the top surface of the cylinder and rotatably connected to the cylinder; an air injection pipe rotatably connected to the upper end of the hollow rod for conveying anhydrous hydrogen fluoride into the hollow rod; a temperature regulating mechanism wrapped on the cylinder for regulating the temperature in the cylinder; and a circulating filtering mechanism located below the cylinder for receiving materials discharged from the cylinder, filtering the materials, and conveying the filtered liquid materials into the cylinder.

[0008] Preferably, the stirring mechanism also includes: a plurality of connecting rods, all of which are located in the cylinder and fixedly connected to the hollow rod; two hollow cylinders, fixedly connected to the connecting rod; a driven gear, fixedly sleeved on the hollow rod; a motor, mounted on the top surface of the cylinder; and a driving gear, mounted on the power output shaft of the motor, meshingly connected to the driven gear.

[0009] Preferably, the stirring mechanism also includes: two spiral conveying rods, which are rotatably installed inside the two hollow cylinders respectively; two first gears, which are fixedly mounted on the upper ends of the two spiral conveying rods respectively; and a first gear ring, which is installed on the inner top surface of the cylinder body and meshingly connected with the two first gears.

[0010] Preferably, the automatically controlled ammonium bifluoride production system further comprises: a feeding pipe installed on the top surface of the cylinder; a support ring fixedly sleeved on the outer surface of the cylinder; a discharge pipe installed on the bottom surface of the cylinder; and a valve installed on the discharge pipe.

[0011] Preferably, the temperature regulating mechanism includes: an outer cylinder, which is covered on the cylinder body; a rotating ring, which is rotatably connected to the outer cylinder and the supporting ring, and a liquid storage space is formed between the rotating ring, the outer cylinder and the cylinder body, and the liquid storage space is used to hold the cooling liquid; a second gear ring, which is fixedly mounted on the rotating ring; a stirring rod, which is installed on the bottom surface of the rotating ring; a plurality of support columns, one end of which is fixedly connected to the inner bottom surface of the outer cylinder, and the other end of which is fixedly connected to the bottom surface of the cylinder body; a plurality of supporting legs, which are installed on the bottom surface of the outer cylinder; a support plate, which is installed on the two supporting legs; a water chiller, which is installed on the top surface of the support plate, and the water suction pipe and water delivery pipe of the water chiller are both fixedly connected to the outer cylinder.

[0012] Preferably, the circulation filtration mechanism includes: a box body, which is located below the outer cylinder and has a discharge port on the front side, and the lower end of the discharge pipe is fixedly connected to and communicated with the box body; a sealing cover, which is detachably mounted on the discharge port; a filter plate, which is mounted in the box body; a delivery pump, which is mounted on the box body, whose liquid extraction pipe is fixedly connected to and communicated with the box body, and whose liquid delivery pipe is fixedly connected to and communicated with the cylinder body; and a cleaning component, which is used to clean the filter plate.

[0013] Preferably, the cleaning assembly includes: a bent rod passing through the top surface of the box and slidably connected to the box; a movable seat installed at one end of the bent rod located outside the box; and a cleaning brush installed at one end of the bent rod located inside the box and in contact with the filter plate.

[0014] Preferably, the automatically controlled ammonium bifluoride production system also includes a transmission mechanism, which includes: a vertical rod rotatably mounted on the outer cylinder; a transmission belt sleeved on the vertical rod and the hollow rod; a second gear fixedly sleeved on the vertical rod and meshingly connected with the second gear ring; a reciprocating screw mounted on the lower end of the vertical rod, and the movable seat sleeved on the reciprocating screw.

[0015] Preferably, the automatically controlled ammonium bifluoride production system also includes a control unit, which includes: a data acquisition module, used to collect comprehensive information of the saturated ammonium fluoride solution in the cylinder, wherein the comprehensive information includes the volume of the saturated ammonium fluoride solution, the density of the saturated ammonium fluoride solution, the viscosity of the saturated ammonium fluoride solution and the temperature of the saturated ammonium fluoride solution; a data analysis module, used to generate a stirring coefficient according to the comprehensive information of the saturated ammonium fluoride solution, and to generate a corresponding motor power level according to the stirring coefficient; and a control module, used to control and adjust the power of the motor according to the corresponding motor power level.

[0016] Preferably, the motor power level is generated as follows: the motor power level includes level 1 power, level 2 power and level 3 power, wherein the level 1 power, level 2 power and level 3 power decrease in sequence; the threshold range of the preset stirring coefficient is P 1 and P 2 , the P 1 <P 2 If P 1 >P, at this time, the data analysis module generates the first-level power; if P 1 ≤P<P 2 , at this time, the data analysis module generates secondary power; if P ≥ P 2 , at this time, the data analysis module generates three levels of power, where P is the stirring coefficient.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The automated ammonium bifluoride production system of the present invention is provided with a stirring mechanism to facilitate stirring of the saturated ammonium fluoride solution in the cylinder, thereby increasing the contact area between the saturated ammonium fluoride solution and anhydrous hydrogen fluoride, thereby increasing the reaction rate.

[0019] 2. The stirring mechanism of the present invention is provided with a hollow rod, a connecting rod, a hollow cylinder, a screw conveying rod, a first gear and a first gear ring. The screw conveying rod rotates while following the rotation of the hollow rod. With the cooperation of the rotating screw conveying rod and the hollow cylinder, the tumbling effect of the solution is enhanced, and the contact area between the saturated ammonium fluoride solution and the anhydrous hydrogen fluoride is further increased, thereby accelerating the reaction speed.

[0020] 3. The stirring mechanism of the present invention is provided with a motor, a driving gear and a driven gear. The motor can not only drive the hollow rod and the hollow cylinder to rotate through the driving gear and the driven gear to achieve stirring of the saturated ammonium fluoride solution; it can also drive the vertical rod to rotate through the transmission belt, and then drive the rotating ring and the stirring rod to rotate through the second gear and the second gear ring, so that the stirring rod stirs the coolant in the liquid storage space to achieve uniform temperature distribution; and when the motor is running, it can also drive the reciprocating screw to rotate through the vertical rod. The rotation of the reciprocating screw will cause the moving seat to move back and forth up and down along it, and then drive the bending rod and the cleaning brush to clean the filter plate to prevent crystal clogging; this one-machine-multiple-purpose design improves the integration and efficiency of the entire production system.

[0021] 4. The control unit in the present invention is equipped with a data acquisition module, a data analysis module and a control module, and comprehensively considers the volume, density, viscosity and temperature of the solution to evaluate the difficulty of stirring and adjust the motor power accordingly. When stirring is easier, the system will automatically reduce the motor power, thereby effectively saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The three-dimensional structure of the ammonium bifluoride production system of the present invention is automatically controlled Figure 1 ;

[0024] Figure 2 The three-dimensional structure of the ammonium bifluoride production system of the present invention is automatically controlled Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the internal structure of the cylinder in the present invention;

[0026] Figure 4 It is a schematic diagram of the assembly structure of the cylinder, the transmission mechanism and the circulating filtering mechanism in the present invention;

[0027] Figure 5 is a three-dimensional diagram of the temperature adjustment mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the cylinder and the temperature adjustment mechanism in the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A;

[0030] Figure 8 is a three-dimensional diagram of the stirring mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the assembly structure of the spiral conveying rod and the hollow cylinder in the present invention;

[0032] Fig.10 It is a schematic diagram of the internal structure of the box in the present invention;

[0033] Fig.11 It is a module diagram of the control unit in the present invention;

[0034] Fig.12 It is a working step diagram of the control unit in the present invention;

[0035] Reference numerals: 100, cylinder; 101, feeding pipe; 102, supporting ring; 103, discharge pipe; 104, valve; 110, stirring mechanism; 111, hollow rod; 1111, gas injection pipe; 112, connecting rod; 113, hollow cylinder; 114, scraper; 115, spiral conveying rod; 116, first gear; 117, first gear ring; 118, driven gear; 119, motor; 1191, driving gear; 120, transmission mechanism; 121, vertical rod; 122, transmission belt; 123, second gear; 124, reciprocating screw; 2 00, temperature regulating mechanism; 201, outer cylinder; 202, rotating ring; 203, second gear ring; 204, stirring rod; 205, supporting column; 206, supporting leg; 207, supporting plate; 208, chiller; 2081, water extraction pipe; 2082, water delivery pipe; 209, mounting seat; 300, circulation filtering mechanism; 301, box body; 302, sealing cover; 303, filter plate; 304, delivery pump; 305, liquid extraction pipe; 306, liquid delivery pipe; 310, cleaning component; 311, bending rod; 312, movable seat; 313, cleaning brush. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1-Figure 3As shown, the automated controlled ammonium bifluoride production system comprises a barrel 100, a stirring mechanism 110, a temperature regulating mechanism 200 and a circulating filtering mechanism 300. The barrel 100 is used to contain a saturated ammonium fluoride solution; the stirring mechanism 110 is installed on the barrel 100, and the stirring mechanism 110 is used to stir the saturated ammonium fluoride solution in the barrel 100. The stirring mechanism 110 comprises a hollow rod 111, an air injection pipe 1111, a plurality of connecting rods 112, two hollow barrels 113, a driven gear 118, a motor 119 and a driving gear 1191. The hollow rod 111 passes through the top surface of the cylinder 100 and is rotatably connected to the cylinder 100. A pH detector (not shown) is installed on the portion of the hollow rod 111 located inside the cylinder 100. The gas injection pipe 1111 is rotatably connected to the upper end of the hollow rod 111. The gas injection pipe 1111 is used to transport anhydrous hydrogen fluoride into the hollow rod 111. A plurality of connecting rods 112 are all located inside the cylinder 100 and fixedly connected to the hollow rod 111. Two hollow cylinders 113 are fixedly connected to the connecting rods 112. A driven gear 118 is fixedly sleeved on the hollow rod 111. A motor 119 is installed on the top surface of the cylinder 100. A driving gear 1191 is installed on the power output shaft of the motor 119, and the driving gear 1191 is meshedly connected to the driven gear 118.

[0039] The temperature regulating mechanism 200 is wrapped around the cylinder 100, and is used to regulate the temperature in the cylinder 100. The circulation filtering mechanism 300 is located below the cylinder 100, and is used to receive the material discharged from the cylinder 100, filter the material, and then transport the filtered liquid material into the cylinder 100.

[0040] Specifically, by adding the raw material of saturated ammonium fluoride solution into the cylinder 100, the saturated ammonium fluoride solution is configured in the cylinder 100 (the configured saturated ammonium fluoride solution can also be directly added into the cylinder 100), and then starting the motor 119, the power output shaft of the motor 119 drives the driving gear 1191 to rotate, and then meshes and drives the driven gear 118 to rotate, and then drives the hollow rod 111 to rotate, and then drives the multiple connecting rods 112 to drive the two hollow cylinders 113 to rotate, and the two rotating hollow cylinders 113 will stir the saturated ammonium fluoride solution in the cylinder 100.

[0041] While the saturated ammonium fluoride solution is being stirred, anhydrous hydrogen fluoride is injected into the gas injection pipe 1111 to allow the anhydrous hydrogen fluoride to enter the cylinder 100 through the hollow tube, thereby allowing the anhydrous hydrogen fluoride to contact and react with the saturated ammonium fluoride solution.

[0042] The reaction liquid is then tested by a pH detector. When the pH value of the reaction liquid reaches 4 (the pH value of the reaction liquid can be 1-4), the delivery of anhydrous hydrogen fluoride is stopped. Then, the temperature regulating mechanism 200 is started to cool the cylinder 100 and the reaction liquid in the cylinder 100. When the reaction liquid is cooled to 15° C. and maintained for 3 hours (the reaction liquid can be cooled to 5-20° C. and maintained for 2 to 4 hours), crystals are precipitated.

[0043] Then, the reaction liquid and crystals are transported to the circulating filtration mechanism 300, which filters the reaction liquid and crystals, leaving the crystals inside, and the liquid is transported back to the cylinder 100, and then a saturated ammonium fluoride solution is prepared in the cylinder 100.

[0044] like Figure 1-Figure 3 , Figure 6 , Figure 8 and Fig. 9 As shown, the stirring mechanism 110 also includes two screw conveying rods 115, two first gears 116 and a first gear ring 117. The two screw conveying rods 115 are rotatably mounted inside the two hollow cylinders 113; the two first gears 116 are fixedly sleeved on the upper ends of the two screw conveying rods 115; the first gear ring 117 is installed on the inner top surface of the cylinder body 100, and the first gear ring 117 is meshed and connected with the two first gears 116.

[0045] Specifically, when the hollow rod 111 drives the hollow cylinder 113 to rotate via the connecting rod 112, the spiral conveying rod 115 in the hollow cylinder 113 will rotate along with the hollow cylinder 113, and because the first gear 116 and the first gear ring 117 are in a meshing state, when the spiral conveying rod 115 rotates along with the hollow cylinder 113, the spiral conveying rod 115 will also rotate under the influence of the first gear 116 and the first gear ring 117.

[0046] When the spiral conveying rod 115 rotates, the saturated ammonium fluoride solution at the bottom of the hollow cylinder 113 is conveyed upward, and the saturated ammonium fluoride solution at the lower part is conveyed upward, so that the saturated ammonium fluoride solution is turned over, thereby increasing the contact area between the saturated ammonium fluoride solution and anhydrous hydrogen fluoride, thereby increasing the reaction rate.

[0047] like Figure 8 and Fig. 9 As shown, a scraper 114 is also provided on the outer surface of the hollow cylinder 113 , and the scraper 114 contacts the inner wall of the cylinder 100 . When the hollow cylinder 113 rotates, the scraper 114 cleans the inner wall of the cylinder 100 , thereby facilitating the scraping off of the crystals attached to the inner wall of the cylinder 100 .

[0048] like Figure 2-Figure 4As shown, the automated controlled ammonium bifluoride production system further includes a feed pipe 101, a support ring 102, a discharge pipe 103 and a valve 104. The feed pipe 101 is mounted on the top surface of the cylinder 100; the support ring 102 is fixedly sleeved on the outer surface of the cylinder 100; the discharge pipe 103 is mounted on the bottom surface of the cylinder 100, the lower end of the discharge pipe 103 is connected to the circulation filtering mechanism 300, and the valve 104 is mounted on the discharge pipe 103, and the valve 104 is an electrically controlled valve 104.

[0049] Specifically, by providing a feeding pipe 101 , it is convenient to add materials into the cylinder 100 ; when in use, by opening the valve 104 , the materials in the cylinder 100 enter the circulation filtering mechanism 300 through the discharge pipe 103 .

[0050] like Figure 5-Figure 7 As shown, the temperature regulating mechanism 200 includes an outer cylinder 201, a rotating ring 202, a second gear ring 203, a stirring rod 204, a plurality of support columns 205, a plurality of support legs 206, a support plate 207 and a chiller 208. The outer cylinder 201 is covered on the cylinder body 100; a mounting seat 209 is installed on the outer surface of the outer cylinder 201, the cross section of the rotating ring 202 is an "I" shape, the rotating ring 202 is clamped on the outer cylinder 201 and the support ring 102, and the rotating ring 202 is rotatably connected to the outer cylinder 201 and the support ring 102, and a liquid storage space is formed between the rotating ring 202, the outer cylinder 201 and the cylinder body 100, and the liquid storage space is used to contain cooling liquid; the second gear ring 203 is fixedly sleeved on the rotating ring 202; The rod 204 is installed on the bottom surface of the rotating ring 202; one end of the multiple support columns 205 is fixedly connected to the inner bottom surface of the outer cylinder 201, and the other end of the multiple support columns 205 is fixedly connected to the bottom surface of the cylinder body 100; multiple support legs 206 are installed on the bottom surface of the outer cylinder 201; the support plate 207 is installed on two support legs 206; the chiller 208 is installed on the top surface of the support plate 207, and the water suction pipe 2081 and the water delivery pipe 2082 of the chiller 208 are both fixedly connected to the outer cylinder 201.

[0051] Specifically, when the barrel 100 and the material in the barrel 100 need to be cooled, the water chiller 208 is started, and the coolant in the liquid storage space enters the water chiller 208, and the coolant is cooled by the water chiller 208, and then the cooled coolant is re-transported to the liquid storage space. When the second gear ring 203 rotates, it drives the rotating ring 202 to rotate, and then drives the stirring rod 204 to rotate. The rotating stirring rod 204 stirs the coolant in the liquid storage space, so that the temperature of the coolant in the liquid storage space is evenly distributed.

[0052] like Figure 1-Figure 4 and Fig.10As shown, the circulation filtering mechanism 300 includes a box body 301, a sealing cover 302, a filter plate 303 and a delivery pump 304. The box body 301 is located below the outer cylinder 201, and a discharge port is provided on the front of the box body 301. The lower end of the discharge pipe 103 is fixedly connected to and communicated with the box body 301; the sealing cover 302 is detachably mounted on the discharge port; the filter plate 303 is mounted in the box body 301, and the filter plate 303 is located on the right side of the discharge port; the delivery pump 304 is mounted on the box body 301, and the liquid extraction pipe 305 of the delivery pump 304 is fixedly connected to and communicated with the box body 301, and the liquid delivery pipe 306 of the delivery pump 304 is fixedly connected to and communicated with the cylinder body 100.

[0053] Specifically, when the valve 104 is opened, the reaction liquid and crystals in the cylinder 100 will enter the box 301 through the discharge pipe 103, and the filter plate 303 will filter the reaction liquid and the crystals, thereby separating the reaction liquid from the crystals, and then by starting the delivery pump 304, the reaction liquid in the box 301 is extracted and delivered to the cylinder 100.

[0054] like Figure 3 and Figure 4 As shown, the automated controlled ammonium bifluoride production system further includes a transmission mechanism 120, which includes a vertical rod 121, a transmission belt 122, and a second gear 123. The vertical rod 121 penetrates the mounting seat 209 and is rotatably connected to the mounting seat 209; pulleys are fixedly sleeved on the vertical rod 121 and the hollow rod 111, the transmission belt 122 is sleeved on the two pulleys, and the second gear 123 is fixedly sleeved on the vertical rod 121, and the second gear 123 is meshed and connected with the second gear ring 203.

[0055] Specifically, when the hollow rod 111 rotates, the transmission belt 122 drives the vertical rod 121 to rotate, which in turn drives the second gear 123 to rotate, and then meshes with and drives the second gear ring 203 to rotate.

[0056] Working principle: When used specifically, the saturated ammonium fluoride solution raw material is added into the cylinder 100, and the saturated ammonium fluoride solution is configured in the cylinder 100 (the configured saturated ammonium fluoride solution can also be directly added into the cylinder 100), and then the motor 119 is started, so that the power output shaft of the motor 119 drives the driving gear 1191 to rotate, and then the driven gear 118 is driven to rotate by meshing, and then the hollow rod 111 is driven to rotate, and then the multiple connecting rods 112 drive the two hollow cylinders 113 to rotate, and the two rotating hollow cylinders 113 will stir the saturated ammonium fluoride solution in the cylinder 100.

[0057] While the saturated ammonium fluoride solution is being stirred, anhydrous hydrogen fluoride is injected into the gas injection pipe 1111 to allow the anhydrous hydrogen fluoride to enter the cylinder 100 through the hollow tube, thereby allowing the anhydrous hydrogen fluoride to contact and react with the saturated ammonium fluoride solution.

[0058] When the hollow rod 111 drives the hollow cylinder 113 to rotate via the connecting rod 112, the spiral conveying rod 115 in the hollow cylinder 113 will rotate along with the hollow cylinder 113. Since the first gear 116 and the first gear ring 117 are in meshing state, when the spiral conveying rod 115 rotates along with the hollow cylinder 113, the spiral conveying rod 115 will also rotate under the influence of the first gear 116 and the first gear ring 117.

[0059] When the spiral conveying rod 115 rotates, the saturated ammonium fluoride solution at the bottom of the hollow cylinder 113 is conveyed upward, and the saturated ammonium fluoride solution at the lower part is conveyed upward, so that the saturated ammonium fluoride solution is turned over, thereby increasing the contact area between the saturated ammonium fluoride solution and anhydrous hydrogen fluoride and improving the reaction rate.

[0060] The reaction liquid is then tested by a pH detector. When the pH value of the reaction liquid reaches 4 (the pH value of the reaction liquid can be 1-4), the delivery of anhydrous hydrogen fluoride is stopped. Then, the chiller 208 is started to allow the coolant in the liquid storage space to enter the chiller 208. The coolant is cooled by the chiller 208 and then the cooled coolant is re-delivered to the liquid storage space, thereby facilitating the reduction of the temperature of the cylinder 100 and the temperature of the reactants in the cylinder 100. When the motor 119 is driven by the driving gear 1191 and When the driven gear 118 drives the hollow rod 111 to rotate, it will drive the vertical rod 121 to rotate through the transmission belt 122, and then drive the second gear 123 to rotate, and then mesh and drive the second gear ring 203 to rotate. When the second gear ring 203 rotates, it will drive the rotating ring 202 to rotate, and then drive the stirring rod 204 to rotate. The rotating stirring rod 204 will stir the coolant in the liquid storage space, so that the temperature of the coolant in the liquid storage space is evenly distributed, thereby facilitating the reduction of the temperature of the cylinder 100 and the reactants in the cylinder 100.

[0061] When the reaction solution is cooled to 15°C and kept for 3 hours (the reaction solution can be cooled to 5-20°C and kept for 2-4 hours), crystals will precipitate.

[0062] Then, the valve 104 on the discharge pipe 103 is opened to transport the reaction liquid and crystals in the cylinder 100 to the box 301, and the reaction liquid and crystals are filtered by the filter plate 303 in the box 301, so that the crystals remain on the left side of the filter plate 303, and then the reaction liquid is transported back to the cylinder 100 by starting the delivery pump 304. After the reaction liquid in the box 301 is drained, the sealing cover 302 is opened to take out the crystals in the box, and then the crystals are dried to obtain high-purity ammonium bifluoride.

[0063] The reaction liquid transported back into the cylinder 100 can be prepared into a saturated ammonium fluoride solution in the cylinder 100 .

[0064] Example 2

[0065] like Figure 3 , Figure 4 and Fig.10 As shown, in the case where other parts are the same as those of Example 1, the difference between this embodiment and Example 1 is that the circulating filtering mechanism 300 further includes a cleaning assembly 310, and the cleaning assembly 310 is used to clean the filter plate 303. The cleaning assembly 310 includes a bent rod 311, a movable seat 312, and a cleaning brush 313. The bent rod 311 penetrates the top surface of the box body 301 and is slidably connected to the box body 301; the movable seat 312 is installed at one end of the bent rod 311 located outside the box body 301; the cleaning brush 313 is installed at one end of the bent rod 311 located inside the box body 301, and the cleaning brush 313 is in contact with the filter plate 303.

[0066] Specifically, when the movable seat 312 moves up and down reciprocatingly, it will drive the bent rod 311 and the cleaning brush 313 to move up and down reciprocatingly, and the moving cleaning brush 313 will clean the filter plate 303, thereby preventing crystals from clogging the filter plate 303 and affecting the filtering efficiency.

[0067] like Fig.10 As shown, the transmission mechanism 120 also includes a reciprocating screw 124 , which is installed at the lower end of the vertical rod 121 , and the moving seat 312 is sleeved on the reciprocating screw 124 , and the moving seat 312 can move back and forth up and down along the reciprocating screw 124 .

[0068] Specifically, when the vertical rod 121 rotates, it drives the reciprocating screw 124 to rotate, thereby causing the movable seat 312 to move back and forth up and down along the reciprocating screw 124, thereby driving the curved rod 311 and the cleaning brush 313 to move back and forth up and down.

[0069] Working principle: When the reaction liquid and crystals are filtered through the filter plate 303 in the box body 301, the motor 119 is started so that the power output shaft of the motor 119 drives the driving gear 1191 to rotate, and then drives the hollow rod 111 to rotate through the driven gear 118, and then drives the vertical rod 121 to rotate through the transmission belt 122, and then drives the reciprocating screw 124 to rotate, and then the movable seat 312 moves up and down reciprocatingly along the reciprocating screw 124, and then drives the bent rod 311 and the cleaning brush 313 to move up and down reciprocatingly, and the moving cleaning brush 313 will clean the filter plate 303, so as to prevent the crystals from clogging the filter plate 303 and affecting the filtering efficiency.

[0070] Example 3

[0071] like Fig.11 and Fig.12As shown, when other parts are the same as those of Example 1, the difference between this embodiment and Example 2 is that: the automatically controlled ammonium bifluoride production system also includes a control unit, the control unit includes a data acquisition module, a data analysis module and a control module, the data acquisition module is used to collect comprehensive information of the saturated ammonium fluoride solution in the cylinder 100, and the comprehensive information includes the volume of the saturated ammonium fluoride solution, the density of the saturated ammonium fluoride solution, the viscosity of the saturated ammonium fluoride solution and the temperature of the saturated ammonium fluoride solution; the data analysis module is used to generate a stirring coefficient according to the comprehensive information of the saturated ammonium fluoride solution, and to generate a corresponding motor power level according to the stirring coefficient; the control module is used to control and adjust the power of the motor 119 according to the corresponding motor power level.

[0072] The working steps of the control unit are as follows:

[0073] Step 1: The data analysis module receives the threshold range P of the preset stirring coefficient set by the user. 1 and P 2 , and P 1 <P 2 ,

[0074] Step 2: The data acquisition module acquires comprehensive information of the saturated ammonium fluoride solution in the cylinder 100, the comprehensive information including the volume of the saturated ammonium fluoride solution, the density of the saturated ammonium fluoride solution, the viscosity of the saturated ammonium fluoride solution and the temperature of the saturated ammonium fluoride solution, and transmits the comprehensive information of the saturated ammonium fluoride solution to the data analysis module;

[0075] Step 3, the data analysis module generates a stirring coefficient according to the comprehensive information of the saturated ammonium fluoride solution, and generates a corresponding motor power level according to the stirring coefficient, and then sends the motor power level to the control module;

[0076] Step 4: The control module controls and adjusts the power of the motor 119 according to the corresponding motor power level.

[0077] In step three, the stirring coefficient is generated as follows:

[0078]

[0079] Where P is the stirring coefficient, V is the volume of the saturated ammonium fluoride solution in the reactor, and V max and V min They represent the maximum and minimum volumes that the saturated ammonium fluoride solution can reach in the reactor, ρ is the density of the saturated ammonium fluoride solution, and ρ max is the maximum density that a saturated ammonium fluoride solution can reach, η is the viscosity of a saturated ammonium fluoride solution, η min is the minimum viscosity that the saturated ammonium fluoride solution can reach, T is the current temperature of the saturated ammonium fluoride solution, and T optis the temperature at which the stirring effect of saturated ammonium fluoride solution is optimal, T max and T min are the highest and lowest temperatures that a saturated ammonium fluoride solution can reach, respectively. α is a constant used to adjust the effect of density on the stirring coefficient.

[0080] The volume V of the saturated ammonium fluoride solution in the cylinder 100 can be obtained by using a liquid level sensor to measure the height of the saturated ammonium fluoride solution, and then converting the height data of the saturated ammonium fluoride solution into a volume (the internal volume of the cylinder 100 is known and fixed); the density ρ of the saturated ammonium fluoride solution is obtained by directly measuring the saturated ammonium fluoride solution by using a densitometer or a density sensor; the viscosity η of the saturated ammonium fluoride solution can be obtained by measuring the saturated ammonium fluoride solution by using a viscometer; the temperature T of the saturated ammonium fluoride solution can be obtained by measuring the saturated ammonium fluoride solution by using a thermometer or a temperature sensor.

[0081] Formula explanation: is a normalized density term that adjusts the effect of density on the stirring coefficient by the exponent α; is an exponential decay function, which is used to indicate that the higher the viscosity, the more difficult it is to stir; is a temperature term, indicating that the closer the temperature is to the optimal temperature T opt The easier it is to stir.

[0082] In step 3, the motor power level includes primary power, secondary power and tertiary power, where primary power, secondary power and tertiary power decrease in sequence. The motor power level is generated as follows:

[0083] The threshold range of the preset stirring coefficient is P 1 and P 2 , and P 1 <P 2 ;

[0084] If P 1 >P, indicating that stirring is difficult. At this time, the data analysis module generates a first-level power;

[0085] If P 1 ≤P<P 2 , indicating that it is difficult to stir. At this time, the data analysis module generates secondary power;

[0086] If P ≥ P 2 , indicating easy stirring. At this time, the data analysis module generates three levels of power, where P is the stirring coefficient.

[0087] When the viscosity η of the saturated ammonium fluoride solution approaches or exceeds η min When the stirring factor P is twice as large as P, the stirring factor P will be set directly below P regardless of other parameters. 1, indicating that it is difficult to stir. When the temperature T of the saturated ammonium fluoride solution approaches the optimal temperature T opt Time (ie |TT opt T<(T max -T tim ) / 4), the stirring coefficient P will increase by 0.1 to reflect the positive effect of temperature on the stirring effect; when the density ρ of the saturated ammonium fluoride solution is close to ρ max When (i.e. ρ>0.9ρ max ), the stirring coefficient P will be reduced by 0.1 to reflect the negative effect of high density on stirring.

[0088] The control unit sets a data acquisition module, a data analysis module and a control module, and comprehensively considers parameters such as the volume, density, viscosity and temperature of the solution to accurately evaluate the difficulty of stirring, and adjusts the power of motor 119 accordingly. When stirring is easier, the power of motor 119 will be automatically reduced, thereby effectively saving energy.

[0089] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0090] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automated controlled ammonium bifluoride production system, characterized in that: include: The cylinder (100) is used to contain a saturated ammonium fluoride solution; A stirring mechanism (110) is installed on the cylinder (100) and is used to stir the saturated ammonium fluoride solution in the cylinder (100), comprising: A hollow rod (111) passes through the top surface of the cylinder (100) and is rotatably connected to the cylinder (100); A gas injection pipe (1111) rotatably connected to the upper end of the hollow rod (111) and used for conveying anhydrous hydrogen fluoride into the hollow rod (111); A temperature regulating mechanism (200), wrapped around the barrel (100), and used to regulate the temperature inside the barrel (100); The circulating filtering mechanism (300) is located below the cylinder (100) and is used to receive the material discharged from the cylinder (100), filter the material, and then transport the filtered liquid material into the cylinder (100).

2. The automated controlled ammonium bifluoride production system according to claim 1, characterized in that: The stirring mechanism (110) further comprises: A plurality of connecting rods (112), all located in the cylinder (100) and fixedly connected to the hollow rod (111); Two hollow cylinders (113) fixedly connected to the connecting rod (112); A driven gear (118) is fixedly sleeved on the hollow rod (111); A motor (119) is mounted on the top surface of the cylinder (100); The driving gear (1191) is mounted on the power output shaft of the motor (119) and is meshedly connected with the driven gear (118).

3. The automated controlled ammonium bifluoride production system according to claim 2, characterized in that: The stirring mechanism (110) further comprises: Two spiral conveying rods (115) are rotatably mounted inside the two hollow cylinders (113) respectively; Two first gears (116) are respectively fixedly sleeved on the upper ends of the two spiral conveying rods (115); The first gear ring (117) is mounted on the inner top surface of the cylinder (100) and is meshedly connected with the two first gears (116).

4. The automated controlled ammonium bifluoride production system according to claim 2, characterized in that: Also includes: A feeding pipe (101) is installed on the top surface of the cylinder (100); A support ring (102) is fixedly sleeved on the outer surface of the cylinder (100); A discharge pipe (103) is installed on the bottom surface of the cylinder (100); A valve (104) is installed on the discharge pipe (103).

5. The automated controlled ammonium bifluoride production system according to claim 4, characterized in that: The temperature adjustment mechanism (200) comprises: An outer cylinder (201) is covered on the cylinder body (100); A rotating ring (202) is rotatably connected to the outer cylinder (201) and the supporting ring (102), and a liquid storage space is formed between the rotating ring (202), the outer cylinder (201) and the cylinder body (100), and the liquid storage space is used to contain cooling liquid; A second gear ring (203) fixedly sleeved on the rotating ring (202); A stirring rod (204) is mounted on the bottom surface of the rotating ring (202); A plurality of support columns (205), one end of which is fixedly connected to the inner bottom surface of the outer cylinder (201), and the other end of which is fixedly connected to the bottom surface of the cylinder body (100); A plurality of supporting legs (206) mounted on the bottom surface of the outer cylinder (201); A support plate (207) mounted on the two supporting legs (206); The water chiller (208) is installed on the top surface of the support plate (207), and the water pumping pipe (2081) and the water delivery pipe (2082) of the water chiller (208) are both fixedly connected to the outer cylinder (201).

6. The automated controlled ammonium bifluoride production system according to claim 5, characterized in that: The circulating filtering mechanism (300) comprises: The box body (301) is located below the outer cylinder (201), and has a discharge port on its front side. The lower end of the discharge pipe (103) is fixedly connected to and communicates with the box body (301); A sealing cover (302) is detachably mounted on the discharge port; A filter plate (303) is installed in the box (301); A delivery pump (304) is installed on the box (301), wherein the liquid extraction pipe (305) thereof is fixedly connected to and communicated with the box (301), and the liquid delivery pipe (306) thereof is fixedly connected to and communicated with the barrel (100); A cleaning component (310) is used to clean the filter plate (303).

7. The automated controlled ammonium bifluoride production system according to claim 6, characterized in that: The cleaning component (310) comprises: A bent rod (311) passes through the top surface of the box (301) and is slidably connected to the box (301); A movable seat (312) is mounted on one end of the bent rod (311) located outside the box (301); A cleaning brush (313) is installed at one end of the bent rod (311) located inside the box (301) and is in contact with the filter plate (303).

8. The automated controlled ammonium bifluoride production system according to claim 7, characterized in that: The invention also comprises a transmission mechanism (120), wherein the transmission mechanism (120) comprises: A vertical rod (121) is rotatably mounted on the outer cylinder (201); A transmission belt (122) is sleeved on the vertical rod (121) and the hollow rod (111); A second gear (123) is fixedly sleeved on the vertical rod (121) and meshedly connected with the second gear ring (203); The reciprocating screw (124) is installed at the lower end of the vertical rod (121), and the moving seat (312) is sleeved on the reciprocating screw (124).

9. The automated controlled ammonium bifluoride production system according to claim 8, characterized in that: Also included is a control unit, the control unit comprising: A data acquisition module, used for acquiring comprehensive information of the saturated ammonium fluoride solution in the cylinder (100), wherein the comprehensive information includes the volume of the saturated ammonium fluoride solution, the density of the saturated ammonium fluoride solution, the viscosity of the saturated ammonium fluoride solution and the temperature of the saturated ammonium fluoride solution; A data analysis module, used to generate a stirring coefficient according to comprehensive information of the saturated ammonium fluoride solution, and to generate a corresponding motor power level according to the stirring coefficient; The control module is used to control and adjust the power of the motor (119) according to the corresponding motor power level.

10. The automated controlled ammonium bifluoride production system according to claim 9, characterized in that: The motor power levels are generated as follows: The motor power levels include primary power, secondary power and tertiary power, where primary power, secondary power and tertiary power decrease in sequence; The threshold range of the preset stirring coefficient is P1 and P2, wherein P1<P2; If P1>P, at this time, the data analysis module generates the first-level power; If P1≤P<P2, at this time, the data analysis module generates secondary power; If P≥P2, at this time, the data analysis module generates three-level power, where P is the stirring coefficient.

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