Nitro-type molten salt continuous production equipment based on PLC and production process of nitro-type molten salt continuous production equipment
By designing a continuous production equipment of nitro-type molten salt based on PLC, the problem of easy melting of frozen molten salt mixing blocks during the transfer process is solved, and the continuous freezing and drying of the mixing blocks is realized, which improves production efficiency and reduces material loss.
Patent Information
- Application Number
- CN202510032453.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, after the mixture is placed in liquid nitrogen for freezing, the frozen molten salt mixing block is easily melted by temperature during the transfer feed process, resulting in loss of raw materials, reduced yield and waste of materials.
A nitro-type molten salt continuous production equipment based on PLC is designed, including a mixed liquid freezing blocking device, a first freezing dryer and a second freezing dryer. The entire production process is controlled by a programmable logic controller PLC to ensure that the mixture blocks in the freezing molding tank are quickly condensed into blocks under liquid nitrogen refrigeration, and continuous discharge and liquid replenishment are achieved through rotary refrigeration and rotation of the refrigeration core to avoid material melting.
Through this equipment and process, continuous freezing and drying of mixing blocks is achieved, production efficiency is improved, material loss and waste is reduced, and efficient preparation of nitro-type molten salts is ensured.
Smart Images
Figure CN120062944A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of nitro molten salt preparation, and particularly to a continuous production device and production process of nitro molten salt based on PLC. Background Art
[0002] The preparation of high-purity heat-conducting energy-storage molten salt is achieved by mixing high-purity lithium nitrate, high-purity sodium nitrate, and high-purity potassium nitrate in a certain proportion to obtain a mixed molten salt, and drying the mixed solution to obtain a nano-particle doped binary nitrate molten salt material. For example, the patent application No. CN201711361214.1 discloses a method for preparing a nano-particle doped binary nitrate molten salt material, which mixes sodium nitrate and potassium nitrate molten salts and grinds them to obtain a molten salt mixture; adds metal or oxide nano-particles to distilled water, and after mechanical stirring and ultrasonic oscillation treatment, obtains a nano-particle suspension; adds the molten salt mixture to the nano-particle suspension, and after mechanical stirring and ultrasonic oscillation treatment, obtains a mixed solution; instantaneously freezes the mixed solution in liquid nitrogen, and then dries it in a freeze dryer to finally obtain a nano-particle doped binary nitrate molten salt material.
[0003] However, in this device, during the process of instantaneously freezing the mixed solution in liquid nitrogen and then drying it in a freeze dryer, the process of transferring the frozen molten salt mixture block into the freeze dryer requires transfer feeding, which easily causes the frozen molten salt mixture block to melt due to temperature influence. This not only leads to a reduction in yield due to raw material loss, but also causes waste of materials. Summary of the Invention
[0004] To solve the above problems, the present invention proposes a continuous production device and production process of nitro molten salt based on PLC to more precisely solve the above problems.
[0005] The present invention is achieved through the following technical solutions: The present invention provides a continuous production device for nitro molten salt based on PLC, which includes a device for freezing the mixed liquid into blocks, a first freeze dryer and a second freeze dryer. The device for freezing the mixed liquid into blocks is arranged on a substrate. On the left side of the device for freezing the mixed liquid into blocks on the substrate, there is a first freeze dryer, and on the right side of the device for freezing the mixed liquid into blocks on the substrate, there is a second freeze dryer. The device for freezing the mixed liquid into blocks includes a freezing chamber. Inside the inner cavity of the freezing chamber, there is a freezing rotating core which is horizontally arranged in a cylindrical shape. On the top of the freezing chamber, there is a mixed liquid storage chamber for storing the material mixed liquid. On the outer wall of the freezing rotating core, there are several freezing forming grooves arranged in an array. Inside the inner cavity of the freezing rotating core, there is a liquid nitrogen storage chamber for filling liquid nitrogen. One end of the liquid nitrogen storage chamber is provided with a liquid supplement interface for supplementing liquid nitrogen. On the inner wall of the freezing rotating core, there are several heat exchange grooves arranged in a circular array. One end of the freezing rotating core is integrally formed with a driven gear. On the outer side wall of the freezing chamber, there is a first motor. At the output shaft end of the first motor, there is a driving gear, and the driving gear is in transmission engagement with the driven gear. At the bottom of the freezing chamber, there is a blanking chamber. On the top of the blanking chamber, there is a blanking notch for the frozen mixed block to fall. In the freezing rotating core and above the blanking notch at the top of the blanking chamber, there is a shedding air duct. The bottom of the shedding air duct is connected with an airtight movable sheet metal. At the bottom of the airtight movable sheet metal, there is a wind pressure notch. One end of the shedding air duct is provided with an air pipe joint for connecting a gas supply device. Inside the freezing forming groove, there is a blanking piece which is slidably fitted. At the bottom of the groove of the freezing forming groove, there is a ventilation hole communicated with the inner cavity of the freezing rotating core, and a blanking spring is connected between the blanking piece and the ventilation hole part. Below the blanking chamber, there are a horizontally arranged and parallel displacement lead screw and displacement sliding shaft. The two ends of the displacement sliding shaft and the displacement lead screw are connected to a shaft support seat. On the displacement sliding shaft and the displacement lead screw, there are two material plates for receiving the frozen mixed blocks falling from the blanking chamber. The feeding ports of the freezing drying chambers inside the first freeze dryer and the second freeze dryer are both arranged on the side close to the device for freezing the mixed liquid into blocks. On the substrate, there is a control console. Inside the control console, there is a programmable logic controller PLC for controlling the device for freezing the mixed liquid into blocks, the first freeze dryer and the second freeze dryer.
[0006] Further, the top of the airtight movable sheet metal is slidably fitted with the inner cavity of the shedding air duct. On both sides of the bottom of the airtight movable sheet metal, there are airtight nylon blocks. Between the top of the airtight movable sheet metal and the bottom of the inner cavity of the shedding air duct, there are several reset springs.
[0007] Further, there is a cavity between the liquid nitrogen storage chamber and the shedding air duct, and the cavity is filled with a heat insulation filling block. Inside the freezing chamber and on the inner wall of the body around the freezing rotating core, there is a heat insulation cotton layer.
[0008] Further, several liquid inlet guide grooves are provided at the interface between the bottom of the mixed liquid storage chamber and the freezing chamber. The positions of the several liquid inlet guide grooves correspond to the positions of the freezing forming grooves opened on the outer wall of the freezing rotating core. A liquid inlet partition plate with a horizontally sliding liquid dropping switch is provided at the upper end of the liquid inlet guide groove. Liquid inlet holes are opened on the liquid inlet partition plate corresponding to the positions of each liquid inlet guide groove. An electromagnetic telescopic rod member for liquid inlet is provided on the outer wall of the mixed liquid storage chamber. The inner end of the telescopic rod of the electromagnetic telescopic rod member for liquid inlet extends to be connected to one side of the liquid inlet partition plate. The programmable logic controller PLC integrated inside the control console controls the telescopic operation of the telescopic rod of the electromagnetic telescopic rod member for liquid inlet.
[0009] Further, a connecting seat that is slidably connected to the shifting sliding shaft and screwed to the shifting lead screw is provided at the bottom of the material plate. A second shifting motor is provided outside the shaft rod support seat. The output shaft end of the second shifting motor is drivingly connected to one end of the shifting lead screw. The programmable logic controller PLC integrated inside the control console controls the start and stop of the second shifting motor.
[0010] Further, a pair of leveling rollers are provided in the inner cavity of the blanking chamber. A distance of 1-1.5 cm is left between the bottom ends of the leveling rollers and the upper surface of the material plate. A third motor is provided on the outer side wall of the freezing chamber. The output shaft end of the third motor is drivingly connected to one end of the leveling roller. The programmable logic controller PLC integrated inside the control console controls the start and stop of the third motor.
[0011] Further, several equally spaced convex strips are provided on the material plate. The cross section of the convex strip is triangular.
[0012] Further, a first material door and a second material door are slidably connected in cooperation at the feeding ports of the first freeze dryer and the second freeze dryer. A first door control electromagnetic telescopic rod member and a second door control electromagnetic telescopic rod member are provided on one side of the first freeze dryer and the second freeze dryer at the feeding port. The telescopic directions of the telescopic rods of the first door control electromagnetic telescopic rod member and the second door control electromagnetic telescopic rod member extend vertically. The end of the telescopic rod of the first door control electromagnetic telescopic rod member is connected to one side of the first material door. The end of the telescopic rod of the second door control electromagnetic telescopic rod member is connected to one side of the second material door. A vertically arranged first sliding rod is provided on the side of the first material door away from the first door control electromagnetic telescopic rod member. A vertically arranged second sliding rod is provided on the side of the second material door away from the second door control electromagnetic telescopic rod member. The first sliding rod and the second sliding rod are slidably connected in cooperation with the sliding rod sleeves provided on one side of the feeding port. A cooperation through groove is opened on the clamping surface of the first material door and the second material door corresponding to the positions of the shifting sliding shaft and the shifting lead screw. A nylon washer is provided in the cooperation through groove. The programmable logic controller PLC integrated inside the control console controls the telescopic operation of the first door control electromagnetic telescopic rod member and the second door control electromagnetic telescopic rod member.
[0013] A production process applied to the PLC-based nitro-type molten salt continuous production equipment, wherein the programmable logic controller PLC assembled inside the control machine controls the operation of the liquid nitrogen supply equipment in the liquid nitrogen storage chamber inside the mixed liquid freezing block device, and the programmable logic controller PLC assembled inside the control machine controls the operation of the gas supply equipment of the shedding airway inside the mixed liquid freezing block device.
[0014] A production process for the PLC-based continuous production equipment of nitro-type molten salt according to any one of claims 1 to 9, comprising the following steps: Step 1: Freezing the mixed liquid into blocks: The programmable logic controller (PLC) integrated inside the control machine controls the telescopic rod of the liquid inlet electromagnetic telescopic rod to perform telescopic operation, so that the mixed liquid stored in the inner cavity of the mixed liquid storage chamber flows into the liquid inlet guide groove through the liquid inlet hole, and is respectively guided to the freezing molding groove at the top of the freezing core through the liquid inlet guide groove. The mixed liquid stored in the freezing molding groove at the top of the freezing core is quickly condensed into blocks under the refrigeration of liquid nitrogen in the liquid nitrogen storage chamber.
[0015] Step 2: Unloading of frozen material blocks: Under the control of the programmable logic controller (PLC) to operate the first motor, the driving gear and the driven gear are driven to mesh and transmit, thereby controlling the freezing core to rotate, so that the mixed material blocks condensed into blocks in the freezing forming tank are rotated to the bottom for unloading; The PLC inside the machine is used to control the air supply device to supply air to the shedding airway, and the air pressure in the shedding airway increases, so that the airtight movable sheet metal descends until the airtight nylon block fits tightly with the inner wall of the frozen rotating core. At this time, as the air pressure in the shedding airway continues to increase, the stripping sheet in the frozen forming tank is pushed out, so that the material can be dropped onto the material plate; Step 3: Preparation before freeze drying: The programmable logic controller (PLC) inside the control machine controls the third motor to drive the flattening roller, so that the flattening roller can smooth the frozen mixed material falling on the material plate; Step 4: Freeze drying: The programmable logic controller PLC inside the control machine controls the second shift motor to drive the shift screw. Under the connection relationship between the shift screw and the connecting seat set at the bottom of the material plate, one of the material plates is controlled to enter and exit the freeze drying chamber of the first freeze dryer or the second freeze dryer, while the other material plate is located in the blanking chamber to receive the frozen formed material. After the drying is completed, the working positions of the two material plates are switched.
[0016] Beneficial effects of the present invention: 1. The present invention controls the telescopic rod of the liquid inlet electromagnetic telescopic rod member through the programmable logic controller (PLC) integrated inside the machine table to perform telescopic operations, enabling the mixed liquid stored in the inner cavity of the mixed liquid storage chamber to flow through the liquid inlet hole into the liquid inlet guide groove, and respectively guiding it through the liquid inlet guide groove into the freezing forming groove at the top of the freezing rotating core. The mixed liquid stored in the freezing forming groove at the top of the freezing rotating core quickly condenses into blocks under the refrigeration of liquid nitrogen in the liquid nitrogen storage chamber. And under the control of the programmable logic controller (PLC) for the operation of the first motor, the driving gear is driven to mesh with the driven gear, thereby controlling the rotation of the freezing rotating core, enabling the mixed material blocks condensed in the freezing forming groove to rotate to the bottom for blanking, and changing the position of the freezing forming groove at the upper end of the freezing rotating core for the next liquid replenishment. The feeding and blanking processes are continuous and do not affect each other, greatly improving the production efficiency; 2. When the programmable logic controller (PLC) integrated inside the machine table controls the gas supply device to supply gas to the shedding air duct, the air pressure inside the shedding air duct increases, causing the airtight movable sheet metal to descend until the airtight nylon block closely adheres to the inner wall of the freezing rotating core. At this time, as the air pressure inside the shedding air duct continues to increase, the blanking sheet in the freezing forming groove is pushed out, thus realizing the effective shedding of the material. In addition, under the drive of the third motor for the leveling roller, the leveling roller levels the frozen mixed material that has fallen on the material plate, spreads the material flat on the material plate, and improves the drying efficiency when the material enters the first freeze dryer and the second freeze dryer; 3. The present invention controls the second shifting motor to drive the shifting lead screw through the programmable logic controller (PLC) integrated inside the machine table. Under the connection relationship between the shifting lead screw and the connecting seat provided at the bottom of the material plate, the material plate is controlled to enter and exit the freeze drying chambers of the first freeze dryer and the second freeze dryer. Through this feeding method, while one freeze dryer is drying the material, the other material plate can still receive the frozen and formed material, thereby improving the production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is the first three-dimensional structure schematic diagram of the present invention; Figure 2 is the second three-dimensional structure schematic diagram of the present invention; Figure 3 is the partial cross-sectional view of the three-dimensional structure of the present invention; Figure 4 is the partial cross-sectional view of the three-dimensional structure of the mixed liquid freezing into blocks device in the present invention; Figure 5 is the partial cross-sectional view of the three-dimensional structure of the freezing rotating core in the present invention; Figure 6 is the front cross-sectional view of the structure of the present invention; Figure 7 is Figure 6 the enlarged view at A in Figure 8 is Figure 6 an enlarged view of part B in Figure 9 is Figure 6 a sectional view taken along line C-C in
[0018] In the figure: 1 is a device for freezing the mixture into blocks; 101 is a freezing chamber; 1011 is a heat-insulating cotton layer; 102 is a freezing rotating core; 1021 is a freezing and forming groove; 1022 is a blanking piece; 1023 is a blanking spring; 1024 is a heat exchange groove; 1025 is a liquid nitrogen storage chamber; 1026 is a falling air duct; 1027 is an airtight movable sheet metal; 10271 is a return spring; 10272 is an airtight nylon block; 1028 is a driven gear; 103 is a mixture storage chamber; 1031 is a liquid inlet electromagnetic telescopic rod member; 1032 is a liquid inlet partition plate; 1033 is a liquid inlet hole; 1034 is a liquid inlet guide groove; 104 is a blanking chamber; 105 is a first motor; 1051 is a driving gear; 106 is a shifting sliding shaft; 1061 is a shifting lead screw; 1062 is a second motor for shifting; 1063 is a shaft support seat; 107 is a material plate; 1071 is a rib; 108 is a flat material roller; 1081 is a third motor; 2 is a first freeze dryer; 201 is a second freeze dryer; 202 is a nylon washer; 203 is a freeze drying chamber; 204 is a material taking door; 205 is a first material door; 2051 is a second material door; 206 is a first door control electromagnetic telescopic rod member; 2061 is a second door control electromagnetic telescopic rod member; 207 is a first sliding rod; 2071 is a second sliding rod; 208 is a sliding rod sleeve; 3 is a substrate. Specific embodiments
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1
[0020] A nitro-type molten salt continuous production device based on a PLC includes a device 1 for freezing the mixture into blocks, a first freeze dryer 2 and a second freeze dryer 201. The device 1 for freezing the mixture into blocks is arranged on a substrate 3. A first freeze dryer 2 is provided on the left side of the device 1 for freezing the mixture into blocks on the substrate 3, and a second freeze dryer 201 is provided on the right side of the device 1 for freezing the mixture into blocks on the substrate 3. Combining Figure 3 and Figure 5As shown, the device 1 for freezing the mixture into blocks includes a freezing chamber 101. Inside the inner cavity of the freezing chamber 101, there is a freezing rotating core 102 horizontally arranged in a cylindrical shape. At the top of the freezing chamber 101, there is a mixture storage chamber 103 for storing the material mixture. On the outer wall of the freezing rotating core 102, there are several freezing and forming grooves 1021 arranged in an array for storing the mixture introduced from the mixture storage chamber 103. Inside the inner cavity of the freezing rotating core 102, there is a liquid nitrogen storage chamber 1025 for filling liquid nitrogen. One end of the liquid nitrogen storage chamber 1025 is provided with a liquid replenishing interface for replenishing liquid nitrogen. The mixture stored in the freezing and forming grooves 1021 at the top of the freezing rotating core 102 quickly solidifies into blocks under the refrigeration of the liquid nitrogen in the liquid nitrogen storage chamber 1025.
[0021] Combined with Figure 5 and Figure 7 As shown, several heat exchange grooves 1024 are provided on the inner wall of the freezing rotating core 102. The several heat exchange grooves 1024 are arranged in a circular array to improve the heat exchange effect between the liquid nitrogen and the mixture inside the freezing and forming grooves 1021 and improve the agglomeration efficiency.
[0022] Combined with Figure 4 and Figure 5 As shown, one end of the freezing rotating core 102 is integrally formed with a driven gear 1028. On the outer side wall of the freezing chamber 101, there is a first motor 105. At the output shaft end of the first motor 105, there is a driving gear 1051, and the driving gear 1051 is in transmission engagement with the driven gear 1028. Under the operation of the first motor 105, the driving gear 1051 is driven to engage and transmit with the driven gear 1028, thereby controlling the rotation of the freezing rotating core 102, changing the position of the freezing and forming grooves 1021 at the upper end of the freezing rotating core 102 for the next liquid replenishment of the freezing and forming grooves 1021. At the bottom of the freezing chamber 101, there is a blanking chamber 104. At the top of the blanking chamber 104, there is a blanking notch for discharging the frozen mixture blocks. The mixture blocks solidified in the freezing and forming grooves 1021 rotate to the bottom for blanking.
[0023] Combined with Figure 3 and Figure 6As shown in the figure, several liquid inlet guide grooves 1034 are provided at the interface between the bottom of the mixed liquid storage chamber 103 and the freezing chamber 101. The positions of the several liquid inlet guide grooves 1034 correspond to the freezing forming grooves 1021 opened on the outer wall of the freezing rotating core 102. A liquid inlet partition plate 1032 for horizontally sliding and setting a liquid dropping switch is provided at the upper end of the liquid inlet guide groove 1034. Liquid inlet holes 1033 are opened on the liquid inlet partition plate 1032 corresponding to the positions of each liquid inlet guide groove 1034. An electromagnetic telescopic rod member 1031 for liquid inlet is provided on the outer wall of the mixed liquid storage chamber 103, and the inner end of the telescopic rod of the electromagnetic telescopic rod member 1031 for liquid inlet extends to be connected to one side of the liquid inlet partition plate 1032. By controlling the telescopic movement of the telescopic rod of the electromagnetic telescopic rod member 1031 for liquid inlet, the mixed liquid stored in the inner cavity of the mixed liquid storage chamber 103 flows through the liquid inlet holes 1033 into the liquid inlet guide grooves 1034, and is respectively guided through the liquid inlet guide grooves 1034 into the freezing forming grooves 1021 at the top of the freezing rotating core 102.
[0024] The technical solutions in the embodiments of the present application at least have the following technical effects or advantages: The present invention controls the telescopic operation of the telescopic rod of the electromagnetic telescopic rod member 1031 for liquid inlet through the programmable logic controller PLC integrated inside the machine platform, so that the mixed liquid stored in the inner cavity of the mixed liquid storage chamber 103 flows through the liquid inlet holes 1033 into the liquid inlet guide grooves 1034, and is respectively guided through the liquid inlet guide grooves 1034 into the freezing forming grooves 1021 at the top of the freezing rotating core 102. The mixed liquid stored in the freezing forming grooves 1021 at the top of the freezing rotating core 102 quickly condenses into blocks under the refrigeration of the liquid nitrogen in the liquid nitrogen storage chamber 1025. And under the control of the programmable logic controller PLC to operate the first motor 105, the driving gear 1051 is driven to mesh with the driven gear 1028, thereby controlling the rotation of the freezing rotating core 102, so that the mixed material blocks condensed into blocks in the freezing forming grooves 1021 rotate to the bottom for blanking, and change the position of the freezing forming grooves 1021 at the upper end of the freezing rotating core 102 for the next liquid supplement, feeding and blanking processes to be continuous and not affect each other, greatly improving the production efficiency. Embodiment 2
[0025] Combined with Figure 5 、 Figure 7 and Figure 8As shown, an air shedding channel 1026 is provided in the freezing rotating core 102 and at the top of the blanking chute of the blanking chamber 104. The bottom of the air shedding channel 1026 is connected to an airtight movable sheet metal 1027. The bottom of the airtight movable sheet metal 1027 is provided with a wind pressure notch. One end of the air shedding channel 1026 is provided with an air pipe joint for connecting a gas supply device. A blanking sheet 1022 is slidably fitted inside the freezing forming groove 1021. The bottom of the freezing forming groove 1021 is provided with a ventilation hole communicating with the inner cavity of the freezing rotating core 102. A blanking spring 1023 is connected between the blanking sheet 1022 and the ventilation hole part. The top of the airtight movable sheet metal 1027 is slidably connected to the inner cavity of the air shedding channel 1026. The two sides of the bottom of the airtight movable sheet metal 1027 are provided with airtight nylon blocks 10272. Under the control of a programmable logic controller PLC integrated in the control machine table to supply gas to the air shedding channel 1026, the air pressure in the air shedding channel 1026 increases, so that the airtight movable sheet metal 1027 descends until the airtight nylon blocks 10272 are in close contact with the inner wall of the freezing rotating core 102. At this time, as the air pressure in the air shedding channel 1026 continues to increase, the blanking sheet 1022 in the freezing forming groove 1021 is pushed out, thus realizing the effective shedding of the material. Then, the blanking sheet 1022 resets under the action of the blanking spring 1023. A plurality of reset springs 10271 are connected between the top of the airtight movable sheet metal 1027 and the bottom of the inner cavity of the air shedding channel 1026. When the gas supply work stops, the airtight movable sheet metal 1027 retracts and resets under the action of the reset springs 10271, avoiding contact wear between the airtight nylon blocks 10272 and the inner wall of the freezing rotating core 102.
[0026] There is a cavity between the liquid nitrogen storage chamber 1025 and the air shedding channel 1026, and the cavity is filled with a heat insulation filling block. To avoid the condensation of the mixed liquid affecting the movement of the blanking sheet 1022, the supplied gas is warm air. By setting the heat insulation filling block, the temperature between the liquid nitrogen storage chamber 1025 and the air shedding channel 1026 is prevented from affecting each other. A heat insulation cotton layer 1011 is provided in the inner wall of the outer periphery of the freezing rotating core 102 in the freezer 101 to ensure the stability of the inner cavity temperature of the freezer 101.
[0027] A pair of leveling rollers 108 are provided in the inner cavity of the blanking chamber 104. There is a spacing of 1 - 1.5 cm between the bottom ends of the leveling rollers 108 and the upper surface of the material plate 107. A third motor 1081 is provided on the outer side wall of the freezer 101, and the output shaft end of the third motor 1081 is drivingly connected to one end of the leveling roller 108. Under the control of the programmable logic controller PLC integrated inside the machine table, the third motor 1081 drives the leveling roller 108 to level the frozen mixed material falling on the material plate 107, spread the material flat on the material plate 107, and improve the drying efficiency when the material enters the first freeze dryer 2 and the second freeze dryer 201. A number of equally spaced convex strips 1071 are provided on the material plate 107. The cross-section of the convex strips 1071 is triangular, which can form a support gap between the material and the bottom of the material plate 107, and avoid the re-contact of the water liquid with the material to affect the drying effect when condensate appears during the precipitation of water vapor.
[0028] The technical solution in the above embodiment of the present application has at least the following technical effects or advantages: In the present invention, under the control of the programmable logic controller PLC integrated inside the machine table, the air supply device supplies air to the shedding air duct 1026, the air pressure in the shedding air duct 1026 increases, so that the airtight movable sheet metal 1027 descends until the airtight nylon block 10272 is in close contact with the inner wall of the freezing core 102. At this time, as the air pressure in the shedding air duct 1026 continues to increase, the stripping sheet 1022 in the freezing forming groove 1021 is pushed out, thus realizing the effective shedding of the material. In addition, under the drive of the third motor 1081 on the leveling roller 108, the leveling roller 108 levels the frozen mixed material falling on the material plate 107, spreads the material flat on the material plate 107, and improves the drying efficiency when the material enters the first freeze dryer 2 and the second freeze dryer 201. Embodiment 3
[0029] Combined with Figure 3 and Figure 6As shown in the figure, below the blanking chamber 104, there are a horizontally arranged and parallel displacement lead screw 1061 and a displacement sliding shaft 106. Both ends of the displacement sliding shaft 106 and the displacement lead screw 1061 are connected to the shaft support seat 1063. Two material plates 107 for receiving the frozen mixed blocks falling from the blanking chamber 104 are connected to the displacement sliding shaft 106 and the displacement lead screw 1061. The bottom of the material plate 107 is provided with a connecting seat that is slidably connected to the displacement sliding shaft 106 and threadedly connected to the displacement lead screw 1061. Outside the shaft support seat 1063, there is a displacement second motor 1062, and the output shaft end of the displacement second motor 1062 is drivingly connected to one end of the displacement lead screw 1061. The feed inlets of the freeze-drying chambers 203 in the first freeze-dryer 2 and the second freeze-dryer 201 are both arranged on the side close to the mixed liquid freezing device 1. By controlling the displacement second motor 1062 to drive the displacement lead screw 1061 through the programmable logic controller PLC integrated in the machine table, under the connection relationship between the displacement lead screw 1061 and the connecting seat provided at the bottom of the material plate 107, the material plate 107 is controlled to enter and exit the freeze-drying chambers 203 of the first freeze-dryer 2 and the second freeze-dryer 201. Through this feeding method, during the drying process of the material in one of the freeze-dryers, the other material plate 107 can still receive the frozen and formed material, thereby improving the production and processing efficiency.
[0030] Combined Figure 6 and Figure 9As shown in the figure, a first material gate 205 and a second material gate 2051 are slidably connected to the feeding ports of the first freeze dryer 2 and the second freeze dryer 201 respectively. On one side of the feeding ports of the first freeze dryer 2 and the second freeze dryer 201, there are a first gate control electromagnetic telescopic rod member 206 and a second gate control electromagnetic telescopic rod member 2061. The telescopic directions of the telescopic rods of the first gate control electromagnetic telescopic rod member 206 and the second gate control electromagnetic telescopic rod member 2061 extend vertically. The end of the telescopic rod of the first gate control electromagnetic telescopic rod member 206 is connected to one side of the first material gate 205, and the end of the telescopic rod of the second gate control electromagnetic telescopic rod member 2061 is connected to one side of the second material gate 2051. On the side of the first material gate 205 away from the first gate control electromagnetic telescopic rod member 206, there is a vertically arranged first sliding rod 207. On the side of the second material gate 2051 away from the second gate control electromagnetic telescopic rod member 2061, there is a vertically arranged second sliding rod 2071. The first sliding rod 207 and the second sliding rod 2071 are slidably connected to a sliding rod sleeve 208 provided on one side of the feeding port. By controlling the telescopic operation of the first gate control electromagnetic telescopic rod member 206 and the second gate control electromagnetic telescopic rod member 2061 through a programmable logic controller PLC integrated inside the machine platform, the opening and closing of the first material gate 205 and the second material gate 2051 for the feeding ports of the first freeze dryer 2 and the second freeze dryer 201 are realized. On the clamping surfaces of the first material gate 205 and the second material gate 2051, and corresponding to the positions of the displacement sliding shaft 106 and the displacement lead screw 1061, there are mating through grooves, and a nylon washer 202 is provided in the mating through grooves. The displacement sliding shaft 106 and the displacement lead screw 1061 are tightly clamped by the nylon washer 202 to ensure the vacuum tightness of the freeze drying chamber 203. On the back of the first freeze dryer 2 and the second freeze dryer 201 and corresponding to the position of the freeze drying chamber 203, there are 204 and a material taking door 204 for taking materials after drying.
[0031] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: In the present invention, the programmable logic controller PLC integrated inside the machine platform is used to control the second displacement motor 1062 to drive the displacement lead screw 1061. Under the connection relationship between the displacement lead screw 1061 and the connecting seat provided at the bottom of the material plate 107, the material plate 107 is controlled to enter and exit the freeze drying chamber 203 of the first freeze dryer 2 and the second freeze dryer 201. Through this feeding method, during the drying process of the material in one of the freeze dryers, another material plate 107 can still receive the frozen and formed materials, thereby improving the production and processing efficiency.
[0032] A production process applied to a nitro-based molten salt continuous production device based on PLC includes the following steps: Step 1: Freezing the mixture into blocks: By controlling the telescopic rod of the liquid inlet electromagnetic telescopic rod member 1031 integrated inside the machine through the programmable logic controller (PLC), the telescopic rod performs telescopic operations, enabling the mixture stored in the inner cavity of the mixture storage chamber 103 to flow through the liquid inlet hole 1033 into the liquid inlet guide groove 1034, and then being respectively guided through the liquid inlet guide groove 1034 into the freezing forming grooves 1021 at the top of the freezing rotating core 102. The mixture stored in the freezing forming grooves 1021 at the top of the freezing rotating core 102 quickly solidifies into blocks under the refrigeration of the liquid nitrogen in the liquid nitrogen storage chamber 1025.
[0033] Step 2: Demolding the frozen material blocks: Under the control of the programmable logic controller (PLC), the first motor 105 is operated to drive the driving gear 1051 to mesh with the driven gear 1028, thereby controlling the rotation of the freezing rotating core 102, causing the mixed material blocks solidified in the freezing forming grooves 1021 to rotate to the bottom for blanking. By controlling the programmable logic controller (PLC) integrated inside the machine to control the gas supply device to supply gas to the dropping air duct 1026, the air pressure inside the dropping air duct 1026 increases, causing the airtight movable sheet metal 1027 to descend until the airtight nylon block 10272 is in close contact with the inner wall of the freezing rotating core 102. At this time, as the air pressure inside the dropping air duct 1026 continues to increase, the demolding sheet 1022 in the freezing forming groove 1021 is pushed out, thereby realizing the dropping of the material onto the material plate 107. Step 3: Preparation before freeze-drying: By controlling the third motor 1081 integrated inside the machine to drive the flattening roller 108, the flattening roller 108 flattens the frozen mixed material dropped onto the material plate 107. Step 4: Freeze-drying: By controlling the programmable logic controller (PLC) integrated inside the machine to control the shifting second motor 1062 to drive the shifting lead screw 1061, under the connection relationship between the shifting lead screw 1061 and the connecting seat provided at the bottom of the material plate 107, one of the material plates 107 is controlled to enter and exit the freeze-drying chamber 203 of the first freeze-dryer 2 or the second freeze-dryer 201, while the other material plate 107 is located in the blanking chamber 104 to receive the frozen and formed material. After the drying is completed, the working positions of the two material plates 107 are switched.
[0034] Certainly, the present invention may also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by ordinary technicians in the art without any creative labor belong to the scope protected by the present invention.
Claims
1. A PLC-based nitro-type molten salt continuous production device, comprising a mixed liquid freezing block device (1), a first freeze dryer (2) and a second freeze dryer (201), characterized in that: The mixed liquid freezing block device (1) is arranged on a base plate (3), and a first freeze dryer (2) is arranged on the base plate (3) on the left side of the mixed liquid freezing block device (1), and a second freeze dryer (201) is arranged on the base plate (3) on the right side of the mixed liquid freezing block device (1). The mixed liquid freezing block device (1) comprises a freezing chamber (101), and a horizontal cylindrical freezing core (102) is rotatably connected in the inner cavity of the freezing chamber (101). A mixed liquid storage chamber (103) for storing a mixed liquid of materials is arranged on the top of the freezing chamber (101), and a plurality of freezing forming grooves (1021) arranged in an array are provided on the outer wall of the freezing core (102). The freezing core (101) is provided with a plurality of freezing forming grooves (1021) arranged in an array. The inner cavity of the freezing chamber (102) is provided with a liquid nitrogen storage chamber (1025) for filling with liquid nitrogen, one end of the liquid nitrogen storage chamber (1025) is provided with a liquid replenishing interface for replenishing liquid nitrogen, the inner wall of the freezing rotor (102) is provided with a plurality of heat exchange grooves (1024), and the plurality of heat exchange grooves (1024) are arranged in a ring array, one end of the freezing rotor (102) is integrally formed with a driven gear (1028), the outer wall of the freezing chamber (101) is provided with a first motor (105), the output shaft end of the first motor (105) is provided with a driving gear (1051), and the driving gear (1051) is in transmission meshing with the driven gear (1028), and the bottom of the freezing chamber (101) is provided with a blanking chamber (104), and the blanking chamber (104) is provided with a driven gear (1028). The top of the chamber (104) is provided with a material dropping notch for dropping the frozen mixed block, a dropping airway (1026) is provided in the freezing core (102) and on the material dropping notch at the top of the dropping chamber (104), the bottom of the dropping airway (1026) is connected to an airtight movable sheet metal (1027), the bottom of the airtight movable sheet metal (1027) is provided with a wind pressure notch, one end of the dropping airway (1026) is provided with an air pipe joint for connecting to an air supply device, a stripping sheet (1022) is slidably provided inside the freezing forming groove (1021), a vent hole communicating with the inner cavity of the freezing core (102) is provided at the bottom of the freezing forming groove (1021), and a stripping spring (1022) is connected between the stripping sheet (1022) and the vent hole. 3), a horizontally disposed shift screw (1061) and a shift slide shaft (106) are arranged below the blanking chamber (104), both ends of the shift slide shaft (106) and the shift screw (1061) are connected to a shaft support seat (1063), and two material plates (107) for receiving the frozen mixed blocks falling from the blanking chamber (104) are connected to the shift slide shaft (106) and the shift screw (1061), and the feed ports of the freeze drying chambers (203) inside the first freeze dryer (2) and the second freeze dryer (201) are both arranged on a side close to the mixed liquid freezing block device (1), and a control machine is provided on the base plate (3), and a programmable logic controller (PLC) is assembled inside the control machine,Used for controlling the mixed liquid freezing block device (1), the first freeze dryer (2) and the second freeze dryer (201).
2. The PLC-based nitro-type molten salt continuous production equipment according to claim 1 is characterized in that: The top of the airtight movable sheet metal (1027) is slidably connected to the inner cavity of the falling airway (1026), airtight nylon blocks (10272) are provided on both sides of the bottom of the airtight movable sheet metal (1027), and a plurality of return springs (10271) are connected between the top of the airtight movable sheet metal (1027) and the bottom of the inner cavity of the falling airway (1026).
3. The PLC-based nitro-type molten salt continuous production equipment according to claim 1 is characterized in that: A cavity is left between the liquid nitrogen storage chamber (1025) and the shedding airway (1026), and the cavity is filled with a thermal insulation filling block. The freezing chamber (101) is provided with a thermal insulation cotton layer (1011) on the inner wall of the outer peripheral body of the freezing core (102).
4. The PLC-based nitro-type molten salt continuous production equipment according to claim 1, characterized in that: A plurality of liquid inlet guide grooves (1034) are provided at the interface between the bottom of the mixed liquid storage chamber (103) and the freezing chamber (101), and the plurality of liquid inlet guide grooves (1034) correspond to the positions of the freezing forming grooves (1021) provided on the outer wall of the freezing core (102). A liquid inlet partition (1032) with a liquid drop switch provided thereon is provided at the upper end of the liquid inlet guide groove (1034) for transverse sliding movement, and a liquid inlet hole (1033) is provided on the liquid inlet partition (1032) at a position corresponding to each liquid inlet guide groove (1034). A liquid inlet electromagnetic telescopic rod (1031) is provided on the outer wall of the mixed liquid storage chamber (103), and the inner end of the telescopic rod of the liquid inlet electromagnetic telescopic rod (1031) extends to one side of the liquid inlet partition (1032) for connection, and a programmable logic controller (PLC) assembled inside the control machine controls the telescopic rod of the liquid inlet electromagnetic telescopic rod (1031) to perform telescopic operation.
5. The PLC-based nitro-type molten salt continuous production equipment according to claim 1, characterized in that: A connecting seat is provided at the bottom of the material plate (107) and is slidably connected to the shifting sliding shaft (106) and is threadedly connected to the shifting screw rod (1061). A second shifting motor (1062) is provided on the outer side of the shaft support seat (1063), and the output shaft end of the second shifting motor (1062) is transmission-connected to one end of the shifting screw rod (1061). The programmable logic controller (PLC) integrated inside the control machine controls the start and stop of the second shifting motor (1062).
6. The PLC-based nitro-type molten salt continuous production equipment according to claim 1, characterized in that: A pair of flat material rollers (108) are provided in the inner cavity of the blanking chamber (104), and a gap of 1-1.5 cm is left between the bottom end of the flat material roller (108) and the upper surface of the material plate (107). A third motor (1081) is provided on the outer wall of the freezing chamber (101), and the output shaft end of the third motor (1081) is transmission-connected to one end of the flat material roller (108). The programmable logic controller PLC integrated inside the control machine controls the start and stop of the third motor (1081).
7. The PLC-based nitro-type molten salt continuous production equipment according to claim 1, characterized in that: The material plate (107) is provided with a plurality of convex strips (1071) arranged at equal intervals, and the cross-section of the convex strips (1071) is triangular.
8. The PLC-based nitro-type molten salt continuous production equipment according to claim 1, characterized in that: The first freeze dryer (2) and the second freeze dryer (201) are both provided with a first material door (205) and a second material door (2051) at the material inlet of the first freeze dryer (2) and the second freeze dryer (201), and a first door-controlled electromagnetic telescopic rod (206) and a second door-controlled electromagnetic telescopic rod (2061) are provided at one side of the material inlet of the first freeze dryer (2) and the second freeze dryer (201). The telescopic rods of the first door-controlled electromagnetic telescopic rod (206) and the second door-controlled electromagnetic telescopic rod (2061) extend in a vertical direction. The telescopic rod end of the first door-controlled electromagnetic telescopic rod (206) is connected to one side of the first material door (205), and the telescopic rod end of the second door-controlled electromagnetic telescopic rod (2061) is connected to one side of the second material door (2051). The first material door (205) is away from the first door-controlled electromagnetic telescopic rod. A first sliding bar (207) arranged vertically is provided on one side of the telescopic rod (206); a second sliding bar (2071) arranged vertically is provided on the side of the second material door (2051) away from the second gate-controlled electromagnetic telescopic rod (2061); the first sliding bar (207) and the second sliding bar (2071) are slidably connected with a sliding bar sleeve (208) arranged on one side of the material feed port; a matching through groove is provided on the clamping surfaces of the first material door (205) and the second material door (2051) and at positions corresponding to the displacement sliding shaft (106) and the displacement lead screw (1061); and a nylon washer (202) is provided in the matching through groove; a programmable logic controller (PLC) assembled inside the control machine controls the telescopic operation of the first gate-controlled electromagnetic telescopic rod (206) and the second gate-controlled electromagnetic telescopic rod (2061).
9. A production process applied to the PLC-based continuous production equipment of nitro-type molten salt according to any one of claims 1 to 8, characterized in that: The programmable logic controller PLC integrated inside the control machine controls the operation of the liquid nitrogen supply equipment in the liquid nitrogen storage chamber (1025) inside the mixed liquid freezing block device (1), and the programmable logic controller PLC integrated inside the control machine controls the operation of the gas supply equipment in the shedding airway (1026) inside the mixed liquid freezing block device (1).
10. A production process applied to the PLC-based continuous production equipment of nitro-type molten salt according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Freezing the mixed liquid into blocks: The programmable logic controller (PLC) integrated inside the control machine controls the telescopic rod of the liquid inlet electromagnetic telescopic rod (1031) to perform telescopic operation, so that the mixed liquid stored in the inner cavity of the mixed liquid storage chamber (103) flows into the liquid inlet guide groove (1034) through the liquid inlet hole (1033), and is respectively guided to the freezing forming groove (1021) at the top of the freezing core (102) through the liquid inlet guide groove (1034). The mixed liquid stored in the freezing forming groove (1021) at the top of the freezing core (102) is rapidly condensed into blocks under the refrigeration of liquid nitrogen in the liquid nitrogen storage chamber (1025); Step 2: removing the frozen material blocks: under the control of the programmable logic controller (PLC) to operate the first motor (105), the driving gear (1051) and the driven gear (1028) are driven to mesh and transmit, thereby controlling the freezing rotating core (102) to rotate, so that the mixed material blocks solidified into blocks in the freezing forming tank (1021) rotate to the bottom end for unloading; By controlling the air supply device of the programmable logic controller (PLC) integrated inside the control machine to supply air to the falling air channel (1026), the air pressure in the falling air channel (1026) increases, thereby causing the airtight movable sheet metal (1027) to descend until the airtight nylon block (10272) is tightly fitted with the inner wall of the freezing core (102). At this time, as the air pressure in the falling air channel (1026) continues to increase, the stripping sheet (1022) in the freezing molding tank (1021) is pushed out, thereby achieving the material falling onto the material plate (107); Step 3: Preparation before freeze drying: The programmable logic controller (PLC) inside the control machine controls the third motor (1081) to drive the flattening roller (108), so that the flattening roller (108) smoothes the frozen mixed material that falls on the material plate (107); Step 4: Freeze drying: The programmable logic controller (PLC) integrated inside the control machine controls the second shift motor (1062) to drive the shift screw (1061). The shift screw (1061) is connected to the connecting seat provided at the bottom of the material plate (107), and one of the material plates (107) is controlled to enter and exit the freeze drying chamber (203) of the first freeze dryer (2) or the second freeze dryer (201), while the other material plate (107) is located in the blanking chamber (104) to receive the freeze-formed material. After drying is completed, the working positions of the two material plates (107) are switched.
Citation Information
Patent Citations
Preparing method of nanoparticle-doped binary nitric acid fused salt material
CN108003846A