Device for preparing powder according to required concentration

Abstract

The utility model provides a device for preparing powder according to required concentration, relates to a saturated solution preparation technology, and particularly discloses a powder bin, a saturated solution bin, a first metering pump, a solid-liquid separation device and a finished product bin, the input end of the solid-liquid separation device is communicated with the powder bin, and the output end of the solid-liquid separation device is communicated with the saturated solution bin; the input end of the first metering pump is communicated with the saturated solution bin, the output end of the metering pump is communicated with the finished product bin, a second normally-closed valve is installed at the communication position of the output end of the metering pump and the finished product bin, a second liquid inlet pipeline is installed at the communication position of the second normally-closed valve and the finished product bin, and a first normally-closed valve is installed on the second liquid inlet pipeline; a first pneumatic stirring device is mounted in the powder bin, a second pneumatic stirring device is mounted in the saturated solution bin, and a third pneumatic stirring device is mounted in the finished product bin; and a spray-washing structure communicated with the first liquid inlet pipeline is mounted in the powder bin.

Description

Technical Field

[0001] This utility model relates to the field of saturated solution preparation technology, and more specifically, to a device for preparing powders according to the required concentration. Background Technology

[0002] In the fields of environmental water treatment, biology, chemistry, and medicine, it is often necessary to prepare solutions. The required concentration varies depending on the specific needs. Currently, workers must manually prepare these solutions using weighing and metering devices, making minor adjustments as needed. This method is only suitable for small-batch production. This makes the existing solution preparation process cumbersome and affects worker efficiency. When preparing solutions of different concentrations in large quantities, reactants must be added to a storage tank, reacted, and then mixed. However, due to the poor fluidity of the solution during preparation, the efficiency of concentration preparation is low, the concentration is difficult to control, and the preparation time is long, increasing costs. Furthermore, the prepared solution may contain impurities or residues from previous preparations, which can affect the effectiveness of subsequent solutions of different concentrations. Utility Model Content

[0003] The purpose of this invention is to provide a device for preparing powder according to the required concentration, which addresses the shortcomings of the prior art and solves the problems mentioned in the background.

[0004] The technical solution of this utility model is implemented as follows:

[0005] This utility model provides a device for configuring powder according to the required concentration, including a powder silo, a saturated solution silo, a first metering pump, a solid-liquid separation device, and a finished product silo. The input end of the solid-liquid separation device is connected to the powder silo, and the output end of the solid-liquid separation device is connected to the saturated solution silo.

[0006] The input end of the first metering pump is connected to the saturated solution chamber, the output end of the metering pump is connected to the finished product chamber, a second normally closed valve is installed at the connection between the output end of the metering pump and the finished product chamber, a second liquid inlet pipe is installed at the connection between the second normally closed valve and the finished product chamber, and the first normally closed valve is installed on the second liquid inlet pipe.

[0007] A first pneumatic agitator is installed in the powder silo, a second pneumatic agitator is installed in the saturated solution silo, and a third pneumatic agitator is installed in the finished product silo.

[0008] It also includes a first liquid inlet pipe, and a spray washing structure connected to the first liquid inlet pipe is installed in the powder silo.

[0009] In some technical solutions of this utility model, level gauges are installed in the powder silo, saturated solution silo, and finished product silo.

[0010] In some technical solutions of this utility model, a gas guide pipe is also included. The first pneumatic stirring device, the second pneumatic stirring device and the third pneumatic stirring device are all connected to the gas guide pipe. The gas guide pipe is provided with a gas supply structure connected to it. A fifth normally closed valve is installed at the connection between the first pneumatic stirring device, the second pneumatic stirring device and the third pneumatic stirring device and the gas guide pipe.

[0011] In some technical solutions of this utility model, a second metering pump is installed on the outer wall of the finished product warehouse, and an output pipe is installed at the output port of the second metering pump.

[0012] In some technical solutions of this utility model, the first pneumatic stirring device includes an annular connecting pipe, which is connected to a guide pipe. A fifth normally closed valve is installed between the connecting pipe and the guide pipe. Multiple exhaust caps are provided at equal intervals on the outer side wall of the connecting pipe, and several exhaust holes are opened on the outer side wall of the exhaust caps.

[0013] In some technical solutions of this utility model, the first pneumatic stirring device, the second pneumatic stirring device, and the pneumatic stirring device all have the same structure.

[0014] In some technical solutions of this utility model, the spray washing structure includes several spray washing pipes installed in the powder silo, several nozzles are equidistantly arranged on the outer side of the spray washing pipes, a first liquid inlet pipe is connected to the spray washing pipes, and a pressure pump connected to the saturated solution silo is installed on the first liquid inlet pipe.

[0015] In some technical solutions of this utility model, a cleaning rotating brush is rotatably installed inside the spray pipe, and a drive motor is installed on the outer wall of the powder hopper. The drive motor is connected to the cleaning rotating brush.

[0016] Compared to existing technologies, this invention has at least the following advantages or beneficial effects: Operators or automatic feeding devices add the required powder to the powder silo, allowing for multiple cycles based on the characteristics of the reagent after a single feeding. An additional automatic feeding device can be configured to ensure long-term unattended operation. The first pneumatic stirring device and spray washing structure located within the powder silo first dissolve the powder in water to form a solution. The powder-water mixture is then separated by a solid-liquid separation device, and the solution enters the saturated solution silo. Undissolved powder particles are blocked by the solid-liquid separation device and continue to mix and dissolve with the aqueous solution in the powder silo. The first, second, and third pneumatic stirring devices are all located at the bottom of their respective silos and employ pneumatic stirring, resulting in low stirring power and high efficiency, effectively avoiding stagnant water zones and ensuring thorough mixing of the solution. The automatic spray washing structure enables rapid dissolution of the powder. The PLC control system automatically adjusts the rinsing time according to the characteristics of different powders, adapting to different reagent preparations. Once the reagent forms a saturated solution in the saturated solution chamber, the PLC control system calculates the saturated solution concentration based on the temperature reading from the temperature sensor and activates the first metering pump. The first metering pump then introduces the appropriate amount of saturated solution calculated by the PLC control system into the finished product chamber. During the introduction of the saturated solution into the finished product chamber, a first normally closed valve installed on the second inlet pipe is opened. The second normally closed valve then introduces the aqueous solution into the finished product chamber through the second inlet pipe, allowing the saturated solution to form reagents of different concentrations within the finished product chamber. This enables the rapid preparation of various reagents with different requirements within a certain time, improving the preparation efficiency and quality. This structure solves the current problem of requiring weighing and significant manual labor for powder dosing each time; it also addresses the issue of powder becoming damp or clumping, affecting the dosage and ultimately the solution concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0018] Figure 2 This is an enlarged structural diagram of the spray washing structure in this utility model.

[0019] Figure 3 This is an enlarged structural schematic diagram of the first pneumatic stirring device in this utility model.

[0020] Figure 4 This is a flowchart of the process flow of this utility model.

[0021] Reference numerals: 1. Powder silo; 2. Saturated solution silo; 3. Finished product silo; 4. Pressure pump; 5. Third normally closed valve; 6. Fourth normally closed valve; 7. Fifth normally closed valve; 8. Air supply structure; 9. First metering pump; 10. First normally closed valve; 11. Second normally closed valve; 12. Second metering pump; 13. Spray pipe; 14. Nozzle; 15. Unclogging rotating brush; 16. Reciprocating stepper motor; 17. First liquid inlet pipe; 18. Drive motor; 19. Connecting pipe; 20. Exhaust cover; 21. Level gauge; 22. Temperature sensor; 23. PLC controller; 24. Solid-liquid separation device; 25. Air guide pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Example

[0025] This utility model provides a device for preparing powder to the required concentration, such as... Figure 1 , Figure 2 As shown, it includes a powder silo 1, a saturated solution silo 2, a first metering pump 9, a solid-liquid separation device 24, and a finished product silo 3. The input end of the solid-liquid separation device 24 is connected to the powder silo 1, and the output end of the solid-liquid separation device 24 is connected to the saturated solution silo 2.

[0026] The input end of the first metering pump 9 is connected to the saturated solution chamber 2, and the output end of the metering pump is connected to the finished product chamber 3. A second normally closed valve 11 is installed at the connection between the output end of the metering pump and the finished product chamber 3. A second liquid inlet pipe is installed at the connection between the second normally closed valve 11 and the finished product chamber 3. A first normally closed valve 10 is installed on the second liquid inlet pipe.

[0027] A first pneumatic agitator is installed in the powder silo 1, a second pneumatic agitator is installed in the saturated solution silo 2, and a third pneumatic agitator is installed in the finished product silo 3.

[0028] It also includes a first liquid inlet pipe 17, and a spray washing structure connected to the first liquid inlet pipe 17 is installed in the powder silo 1.

[0029] In this technical solution, when preparing the solution, the operator needs to add the required powder to the powder silo 1. This allows for multiple cycles after a single loading, depending on the characteristics of the reagent, and an additional automatic loading device can be configured to ensure long-term unattended operation. The first pneumatic agitator and spray washing structure located in the powder silo 1 first dissolve the powder in water to form a solution. The powder-water mixture is then separated by a solid-liquid separator 24, and the solution enters the saturated solution silo 2. Undissolved powder particles are blocked by the solid-liquid separator 24 and continue to mix and dissolve with the aqueous solution in the powder silo 1. The first pneumatic agitator is located at the bottom of the powder silo 1, employing pneumatic agitation with low power and high efficiency, effectively avoiding stagnant areas and ensuring thorough mixing. The automatic spray washing structure achieves rapid dissolution of the powder and automatically adjusts the rinsing time according to the characteristics of different powders, adapting to different reagent preparations. Once the reagent forms a saturated solution in the saturated solution chamber 2, the PLC control system 23 reads the temperature from the temperature sensor 22, calculates the saturated solution concentration, and activates the first metering pump 9. The first metering pump 9 introduces the appropriate amount of saturated solution calculated by the PLC control system 23 into the finished product chamber 3. During the introduction of the saturated solution into the finished product chamber 3, the first normally closed valve 10 and the second normally closed valve 11, installed on the second inlet pipe, are opened, allowing the aqueous solution to be introduced into the finished product chamber 3 through the second inlet pipe. This allows the saturated solution to form reagents of different concentrations within the finished product chamber 3, thereby rapidly preparing various reagents with different requirements within a certain time, improving the preparation efficiency and quality. This structure solves the current problem of requiring weighing and extensive manual labor for powder dosing; it also addresses the issue of powder becoming damp and clumping, affecting the dosage and ultimately the solution concentration.

[0030] Preferably, the specific model of the PLC control system 23 is a Siemens 1200 series PLC matching electrical control cabinet, the specific model of the temperature sensor 22 is a CWDZ15C temperature transmitter, the specific model of the first metering pump 9 is a GB0300 metering pump set (adopting a one-in-one backup mode), and the specific models of the first normally closed valve, the second normally closed valve, the third normally closed valve, the fourth normally closed valve, and the fifth normally closed valve are all normally closed solenoid valves DN25.

[0031] The solid-liquid separation device 24 is made of 2205 stainless steel sintered mesh plate with a filtration accuracy of 10 microns to 40 microns.

[0032] In some technical solutions of this utility model, level gauges 21 are installed in the powder silo 1, the saturated solution silo 2, and the finished product silo 3. These level gauges can determine the volume of each solution in the powder silo 1, the saturated solution silo 2, and the finished product silo 3, facilitating the PLC control system to detect whether any problems occur during operation, affecting the final product quality. The specific model of the level gauge 21 is the Beijing Ruipu Sanyuan US-500 integrated ultrasonic level gauge.

[0033] This technical solution utilizes the fact that any powder has a saturation concentration. After adding excess powder, different saturation solution concentrations are achieved at different temperatures by injecting water or other solvents and rinsing or stirring. Thus, the concentration of the current saturated solution can be obtained by detecting the temperature. After calculating the concentration of this saturated solution, it is quantitatively injected into the finished product chamber 3, along with a quantitative amount of water, to obtain a solution of the required concentration. This accelerates the efficiency and improves the quality of the finished drug preparation using this structure.

[0034] In some technical solutions of this utility model, a gas guide pipe 25 is also included. The first, second, and third pneumatic stirring devices are all connected to the gas guide pipe 25. A gas supply structure 8 is provided on the gas guide pipe 25 and connected thereto. A fifth normally closed valve 7 is installed at the connection points between the first, second, and third pneumatic stirring devices and the gas guide pipe 25. The gas supply structure 8 specifically includes a fan and a gas delivery valve connected to the fan. The gas delivery valve is connected to the gas guide pipe 25 and is used to continuously provide airflow to the first, second, and third pneumatic stirring devices to fully stir the solvent placed in the powder silo 1, the saturated solution silo 2, and the finished product silo 3.

[0035] In some technical solutions of this utility model, the first pneumatic stirring device includes an annular connecting pipe 19, which is connected to a gas guide pipe 25. A fifth normally closed valve 7 is installed between the connecting pipe 19 and the gas guide pipe 25. Multiple exhaust caps 20 are equidistantly arranged on the outer wall of the connecting pipe 19, and several exhaust holes are opened on the outer wall of each exhaust cap 20. This structure increases the contact area between the exhaust cap 20 and the solvent, thereby improving the stirring effect of the structure on the solvent. The pneumatic stirring has low stirring power and high efficiency, providing good disturbance to the solution, effectively avoiding stagnant areas, and ensuring thorough mixing of the solution.

[0036] In some technical solutions of this utility model, the first pneumatic stirring device, the second pneumatic stirring device, and the third pneumatic stirring device all have the same structural principle design.

[0037] In some technical solutions of this utility model, a second metering pump 12 is installed on the outer wall of the finished product silo 3, and an output pipe is installed at the output port of the second metering pump 12. The second metering pump 12 can monitor the volume of the finished product solvent discharged from the finished product silo 3 in real time. The specific model of the second metering pump 12 is GB0900 metering pump set (adopting a one-in-one-backup mode).

[0038] In some technical solutions of this utility model, the spray washing structure includes several spray washing pipes 13 installed in the powder silo 1. Several nozzles 14 are equidistantly arranged on the outer side of the spray washing pipes 13. A first liquid inlet pipe 17 is connected to the spray washing pipes 13, and a pressure pump 4 connected to the saturated solution silo 2 is installed on the first liquid inlet pipe 17. A reciprocating stepper motor 16, which is drively connected to the spray washing pipes 13, is installed on the outer wall of the powder silo 1. This structure increases the spray washing area of ​​the spray washing pipes 13. The reciprocating stepper motor 16 drives the spray washing pipes 13 to rotate 90° reciprocally, ensuring repeated rinsing of the powder and solid-liquid analysis device, preventing powder accumulation in the powder silo 1, improving powder utilization, and reducing powder loss. The specific model of the reciprocating stepper motor 16 is an 86HS120 stepper motor. The specific model of pressure pump 4 is a light-duty vertical multistage centrifugal pump CDMF10-7, with a power of 3kw, a flow rate of 10m3 / h, a head of 62m, and inlet and outlet flanges of DN40. The voltage is 380V.

[0039] In some technical solutions of this utility model, a cleaning rotating brush 15 is rotatably installed inside the spray pipe 13, and a drive motor 18 is installed on the outer wall of the powder hopper 1. The drive motor 18 is connected to the cleaning rotating brush 15. The cleaning rotating brush 15 is elongated and its specific structure includes a rotating shaft. A rubber sleeve is fitted on the outer wall of the rotating shaft, and bristles are provided on the outer wall of the rubber sleeve. The bristles are made of hard material and can clean the inner wall of the spray pipe 13, preventing powder from entering the spray pipe 13 from the nozzle 14 and causing blockage. The drive motor 18 is specifically an 86HS85 stepper motor.

[0040] Working principle of the device: Powder, sufficient for multiple preparations, is added externally via manual or automatic feeding devices. Upon receiving a remote command, the device automatically operates. Level gauges 21 in the finished product silo 3, the saturated solution silo 2, and the powder silo 1 detect low liquid levels, activating the fourth normally closed valve 6. This initiates the operation of the two spray pipes 13, allowing the device to replenish water, spray the powder, and spray the solid-liquid separation device 24. The fifth normally closed valve 7, connected to the powder silo 1, is activated, activating the air supply structure 8 and initiating the operation of the first gas agitator within the powder silo 1. When level gauge 21 in the saturated solution silo 2 detects a high liquid level, it closes the fourth normally closed valve 6, stopping the operation of the two spray pipes 13. Finally, the fifth normally closed valve 7, connected to the saturated solution silo 2, is activated, initiating the operation of the second gas agitator within the saturated solution silo 2. The third normally closed valve 5 is activated, the pressure pump 4 is started, and the two spray pipes 13 begin operation. The equipment replenishes water and sprays the powder, as well as the solid-liquid separation device 24. After the predetermined time, the pressure pump 4, the third normally closed valve 5, the fifth normally closed valve 7 connected to the powder silo 1, and the fifth normally closed valve 7 connected to the saturated solution silo 2 are closed. The PLC controller 23 reads the temperature from the temperature sensor 22 located in the saturated solution silo 2, calculates the saturated concentration of the solution, outputs the required quantity, activates the second normally closed valve 11, activates the first metering pump 9, and after starting for a certain period of time according to the required quantity, stops and closes the second normally closed valve 11 and the first metering pump 9. The fifth normally closed valve 7 connected to the finished product silo 3 is activated, the third gas stirring device located in the finished product silo 3 is started for aeration, and the first normally closed valve 10 is activated for water replenishment. The level gauge 21 in the finished product silo 3 detects a high level and closes the first normally closed valve 10. After the predetermined time, the gas supply structure 8 and the fifth normally closed valve 7 connected to the finished product silo 3 are closed. The second metering pump 12 is started to deliver the solution to the point of use. When the level gauge in the finished product tank 3 detects a low level, but the level gauge 21 in the saturated solution tank 2 does not detect a low level, the first normally closed valve 10 is started, and the first metering pump 9 continues to prepare the finished solution.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An apparatus for dispensing powder to a required concentration, characterized in that, It includes a powder silo (1), a saturated solution silo (2), a first metering pump (9), a solid-liquid separation device (24), and a finished product silo (3). The input end of the solid-liquid separation device (24) is connected to the powder silo (1), and the output end of the solid-liquid separation device (24) is connected to the saturated solution silo (2). The input end of the first metering pump (9) is connected to the saturated solution tank (2), the output end of the metering pump is connected to the finished product tank (3), a second normally closed valve (11) is installed at the connection between the output end of the metering pump and the finished product tank (3), a second liquid inlet pipe is installed at the connection between the second normally closed valve (11) and the finished product tank (3), and a first normally closed valve (10) is installed on the second liquid inlet pipe; The powder silo (1) is equipped with a first pneumatic stirring device, the saturated solution silo (2) is equipped with a second pneumatic stirring device, and the finished product silo (3) is equipped with a third pneumatic stirring device. It also includes a first liquid inlet pipe (17), and a spray washing structure connected to the first liquid inlet pipe (17) is installed in the powder silo (1).

2. The apparatus for preparing powder according to a required concentration according to claim 1, characterized in that, Level gauges (21) are installed in the powder silo (1), saturated solution silo (2) and finished product silo (3), and a temperature sensor (22) is installed in the saturated solution silo (2).

3. The apparatus for preparing powder according to a required concentration according to claim 1, characterized in that, It also includes an air guide pipe (25), the first pneumatic stirring device, the second pneumatic stirring device and the third pneumatic stirring device are all connected to the air guide pipe (25), and the air guide pipe (25) is provided with an air supply structure (8) connected to it; a fifth normally closed valve (7) is installed at the connection between the first pneumatic stirring device, the second pneumatic stirring device and the third pneumatic stirring device and the air guide pipe (25).

4. The apparatus for preparing powder according to a required concentration according to claim 1, characterized in that, A second metering pump (12) is installed on the outer wall of the finished product warehouse (3), and an output pipe is installed at the output port of the second metering pump (12).

5. The apparatus for preparing powder according to a required concentration according to claim 3, characterized in that, The first pneumatic stirring device includes an annular connecting pipe (19), which is connected to the air guide pipe (25). The fifth normally closed valve (7) is installed between the connecting pipe (19) and the air guide pipe (25). Multiple exhaust caps (20) are provided at equal intervals on the outer side wall of the connecting pipe (19), and multiple exhaust holes are opened on the outer side wall of the exhaust caps (20).

6. The apparatus for preparing powder according to a required concentration according to claim 5, characterized in that, The first pneumatic stirring device, the second pneumatic stirring device, and the pneumatic stirring device all have the same structure.

7. The apparatus for preparing powder according to a required concentration according to claim 1, characterized in that, The spray washing structure includes a plurality of spray washing pipes (13) installed in the powder silo (1). A plurality of nozzles (14) are provided at equal intervals on the outer side of the spray washing pipes (13). The first liquid inlet pipe (17) is connected to the spray washing pipes (13). A pressure pump (4) connected to the saturated solution silo (2) is installed on the first liquid inlet pipe (17).

8. The apparatus for preparing powder according to a required concentration according to claim 7, characterized in that, The spray pipe (13) is equipped with a rotatable cleaning brush (15), and a drive motor (18) is installed on the outer wall of the powder silo (1). The drive motor (18) is connected to the cleaning brush (15) in a transmission connection.

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