Concentration device for preparing methoxyacetic acid

Abstract

The invention relates to a concentration device for methoxyacetic acid preparation, and relates to the technical field of methoxyacetic acid preparation, the concentration device comprises a concentration barrel, a spraying assembly, a collection assembly, an evaporation assembly and a detection assembly, the top of one side of the concentration barrel communicates with a liquid inlet pipe, the spraying assembly is arranged in the concentration barrel, the liquid inlet pipe communicates with the spraying assembly, and the liquid inlet pipe communicates with the collection assembly; the spraying assembly is used for spraying a solution needing to be concentrated into the concentration barrel; the collection assembly is arranged at the bottom of the concentration barrel and is used for collecting the concentrated solution; a lead screw is fixedly arranged in the center of the bottom in the concentration barrel, the lead screw is a reciprocating lead screw, and the lead screw is vertically arranged and is coaxial with the concentration barrel; the lead screw is in spiral transmission connection with a rotating block in the vertical direction. The evaporation assembly is used for enabling steam to be in contact with the sprayed solution, so that a solvent in the solution is evaporated together; the detection assembly can assist in detecting the concentrated solution. The concentration device for preparing methoxyacetic acid can realize efficient evaporation and concentration processes.

Description

Technical Field

[0001] The present application relates to the technical field of methoxyacetic acid preparation, and in particular to a concentrating device for methoxyacetic acid preparation. Background Art

[0002] Concentrators play a vital role in chemical production, especially in the preparation of methoxyacetic acid. As an important organic solvent and intermediate, methoxyacetic acid is widely used in medicine, pesticides, dyes and other fields. With the acceleration of industrialization, the demand for concentrators is also increasing. They are not only required to have efficient concentrating capabilities, but also to be easy to operate and maintain in order to meet the requirements of large-scale production and high-quality products.

[0003] At present, common methoxyacetic acid concentration devices mainly include kettle evaporators, thin film evaporators and multiple-effect evaporators. Kettle evaporator is the most traditional method, which evaporates the volatile components in the solution by direct heating to achieve concentration. Thin film evaporator is equipped with a rotating scraper in the cylinder, which uses centrifugal force to form a thin layer of solution and evaporates it quickly by heating with a heat medium. Multiple-effect evaporator improves energy utilization and reduces energy consumption by multiple evaporations.

[0004] However, the existing concentration devices still face some challenges in practical use. The unreasonable design of the spray system leads to uneven distribution of the solution in the concentration barrel, which affects the concentration effect. The insufficient stability of the steam supply system cannot ensure a continuous and efficient evaporation process. These problems seriously affect the working efficiency of the concentration device and the quality of the final product. There is an urgent need for an improved concentration device to overcome these defects. Summary of the invention

[0005] In order to overcome the above technical problems, the present application provides a concentration device for preparing methoxyacetic acid.

[0006] The present application provides a concentrating device for preparing methoxyacetic acid, which adopts the following technical solution: A concentrating device for preparing methoxyacetic acid comprises a concentrating barrel, a spraying assembly, a collecting assembly and an evaporating assembly, wherein a liquid inlet pipe is connected to the top of one side of the concentrating barrel, the spraying assembly is arranged in the concentrating barrel, the liquid inlet pipe is connected to the spraying assembly, and the spraying assembly is used to spray a solution to be concentrated into the concentrating barrel; the collecting assembly is arranged at the bottom of the concentrating barrel, and is used to collect the concentrated solution; a lead screw is fixedly arranged at the center of the bottom of the concentrating barrel, the lead screw is a reciprocating lead screw, the lead screw is vertically arranged and coaxially arranged with the concentrating barrel; a rotating block is connected to the lead screw in a vertical direction by spiral transmission; an air inlet hole is opened at the center of the top of the concentrating barrel; The evaporation assembly includes an intake pipe, an exhaust pipe, a connecting pipe, a telescopic pipe, a gas transmission pipe, a steam ring pipe, and a steam pipe; the intake pipe is fixedly connected to the top surface of the concentration barrel and communicates with the intake hole; the exhaust pipe communicates with the top of the side wall on one side of the concentration barrel; the connecting pipe is L-shaped, the top end of the connecting pipe is rotatably connected to the inner wall of the intake hole, and the connecting pipe communicates with the intake pipe; the end of the connecting pipe away from the intake hole is fixedly connected to the top end of the telescopic pipe, the telescopic pipe is vertically arranged, and the bottom end of the telescopic pipe is fixedly connected to the gas transmission pipe; the gas transmission pipe is horizontally arranged, one end of the gas transmission pipe is fixedly connected to the rotating block, and the other end is fixedly connected to the steam ring pipe; the steam ring pipe is coaxially arranged with the lead screw, there are several steam pipes, and several steam pipes are all fixedly connected to the top of the steam ring pipe, the steam pipes are inclined, and several steam pipes are circumferentially arranged in an array with the axis of the steam ring pipe as the array axis.

[0007] By adopting the above technical solutions, the concentration device for preparing methoxyacetic acid can achieve an efficient evaporation and concentration process. Specifically: through the setting of the concentration barrel, structural support is provided for the concentration process; through the setting of the spraying assembly and the liquid inlet pipe, the solution to be concentrated can enter the concentration barrel through the liquid inlet pipe and into the spraying assembly, and is sprayed through the spraying assembly; the setting of the collection assembly facilitates the timely collection of the concentrated solution, ensuring production continuity and product quality; the combination of the lead screw and the rotating block realizes the up and down movement of the gas transmission pipe and its connecting components, enabling the steam to more effectively cover the solution in the entire concentration barrel, avoiding local overheating or cold spots, and improving the overall concentration efficiency; through the setting of the intake pipe, high-temperature steam can enter the concentration barrel through the intake pipe; through the setting of the exhaust pipe, after the solution in the concentration barrel comes into contact with the high-temperature steam, the steam and the evaporated solvent can be discharged out of the concentration barrel through the exhaust pipe; through the setting of the connecting pipe, high-temperature steam can enter the connecting pipe through the intake pipe; through the setting of the telescopic pipe, high-temperature steam can enter the telescopic pipe from the connecting pipe; through the setting of the steam ring pipe, high-temperature steam can enter the steam ring pipe from the telescopic pipe; through the inclined setting and circumferential array arrangement of the steam pipes, the steam can enter the concentration barrel from the steam ring pipe through the steam pipes, and when the steam is discharged from the steam pipes, a reaction force parallel to the inclined direction of the steam pipes is given to the steam ring pipe, driving the steam ring pipe to rotate. The rotation of the steam ring pipe drives the gas transmission pipe to rotate, the gas transmission pipe drives the telescopic pipe and the rotating block to rotate, and while the rotating block rotates, it reciprocates vertically along the lead screw, thereby driving the gas transmission pipe and the steam ring pipe to also reciprocate vertically while rotating, driving the telescopic pipe to perform a cyclic movement of elongation and shortening, so that the steam in the steam ring pipe can be evenly discharged into the concentration barrel through the steam pipes and make full contact with the sprayed solution.

[0008] In summary, the concentration device not only has a compact and reasonable structure, but also is easy to operate, significantly improving the concentration efficiency of methoxyacetic acid and the product purity.

[0009] Optionally, a plurality of steam manifold pipes are provided. The plurality of steam manifold pipes are fixedly connected to and communicate with the gas transmission pipe. The plurality of steam manifold pipes are coaxially arranged, and a plurality of obliquely arranged steam pipes are fixedly connected to the top of each steam manifold pipe.

[0010] By adopting the above technical solution, the design of multiple steam manifold pipes enables the steam to be more evenly distributed inside the concentration barrel, thereby improving the heating efficiency of the solution and the evaporation rate. At the same time, the setting of multiple layers of steam manifold pipes increases the chance of contact between the steam and the solution, further enhancing the concentration effect. In addition, the obliquely arranged steam pipes on each steam manifold pipe can drive the corresponding steam manifold pipe to rotate, ensuring that the steam more effectively covers the surface of the solution, improving the heat transfer and mass transfer efficiency, shortening the concentration time, ensuring the uniform distribution of the steam throughout the concentration barrel, and further enhancing the evaporation effect.

[0011] Optionally, the spraying assembly includes a liquid receiving tray. The side wall of the liquid receiving tray is fixedly connected to the top inner wall of the concentration barrel. The liquid inlet pipe communicates with the liquid receiving tray. The cross-section of the liquid receiving tray is circular. The liquid receiving tray is horizontally arranged and coaxially arranged with the concentration barrel. A plurality of evenly distributed liquid outlet holes are formed on the bottom surface of the liquid receiving tray, and a spray head fixedly connected to the bottom surface of the liquid receiving tray is provided below each liquid outlet hole.

[0012] By adopting the above technical solution, the design of the spraying assembly enables the solution to be evenly distributed inside the concentration barrel, improving the spraying efficiency and the coverage area, thereby enhancing the evaporation effect of the solution. Specifically, the liquid receiving tray is fixedly connected to the top inner wall of the concentration barrel, ensuring the structural stability and sealing performance; the liquid inlet pipe communicates with the liquid receiving tray, ensuring the smooth entry of the solution into the liquid receiving tray; the cross-section of the liquid receiving tray is circular, horizontally arranged and coaxially arranged with the concentration barrel, enabling the solution to be evenly dispersed to each spray head under the action of gravity; the design of a plurality of evenly distributed liquid outlet holes in cooperation with the corresponding spray heads further improves the atomization effect of the solution, increases the chance of contact between the solution and the heat source, speeds up the evaporation speed, and improves the concentration efficiency. The design of the spraying assembly enables the solution to form fine droplets when entering the concentration barrel, increasing the surface area of contact between the solution and the steam, thereby improving the mass transfer efficiency.

[0013] Optionally, the liquid receiving tray is annular, a communication port is formed in the middle of the liquid receiving tray, the lower section of the connecting pipe is located in the communication port, and the top end of the telescopic pipe is also located in the communication port.

[0014] By adopting the above technical solution, the lower liquid pan is designed in a ring shape, which can ensure that the solution is evenly dispersed inside the concentration barrel, improving the spraying effect. At the same time, the communication port opened in the middle of the lower liquid pan provides an installation space for the connecting pipe and the telescopic pipe.

[0015] Optionally, a collection groove is opened on the bottom surface inside the concentration barrel.

[0016] By adopting the above technical solution, a collection groove is opened on the bottom surface inside the concentration barrel, which can effectively collect the concentrated solution, avoid the solution from scattering at the bottom of the concentration barrel, and improve the collection efficiency and the solution recovery rate.

[0017] Optionally, the collection groove is located on one side of the bottom surface inside the concentration barrel, the bottom surface inside the concentration barrel is inclined, and the collection groove is located on the lower side of the bottom surface inside the concentration barrel.

[0018] By adopting the above technical solution, the collection groove is located on one side of the bottom surface inside the concentration barrel, and the bottom surface inside the concentration barrel is inclined, so that the concentrated solution can flow smoothly into the collection groove on the lower side, effectively preventing the solution from remaining at the bottom of the concentration barrel, and improving the solution collection efficiency and the cleanliness of the device.

[0019] Optionally, the collection assembly includes a collection pipe, a collection pump and a collection valve. The collection pipe is communicated with the inside of the collection groove, the collection pump is arranged on the collection pipe, and the collection valve is also arranged on the collection pipe and is located between the collection pump and the collection groove.

[0020] By adopting the above technical solution, the collection assembly can efficiently transfer the concentrated solution out of the concentration barrel. Specifically, the communication design between the collection pipe and the collection groove ensures that the solution can flow smoothly into the collection pipe, and the collection pump can provide the necessary power to quickly and smoothly discharge the solution from the concentration barrel. At the same time, the setting of the collection valve can close the collection pipe when needed to prevent the solution from leaking or flowing back, thus ensuring the stability and safety of the whole system.

[0021] Optionally, it further includes a detection assembly. The detection assembly includes a detection pipe and a detection valve. The detection pipe is also communicated with the collection groove, and the detection valve is arranged on the detection pipe.

[0022] By adopting the above technical solution, the addition of the detection assembly enables the solution concentration during the concentration process to be monitored in real time, ensuring that the concentration effect meets the expected standard. Specifically, the detection pipe is communicated with the collection groove, which can timely collect the sample of the concentrated solution, and the detection valve controls the opening and closing of the detection pipe, facilitating the operator to take samples and analyze, thus effectively avoiding product quality problems caused by improper solution concentration.

[0023] Optionally, a first three-way valve is provided on the collecting pipe, a second three-way valve is provided on the liquid inlet pipe, and a liquid return pipe is connected between the first three-way valve and the second three-way valve.

[0024] By adopting the above technical solution, the setting of the first three-way valve and the second three-way valve enables the solution to circulate flexibly between the collecting pipe and the liquid inlet pipe. Specifically, when some solutions during the concentration process do not reach the expected concentration, they can be re-fed into the concentration barrel through the liquid return pipe for re-treatment, thereby improving the concentration efficiency and product quality. At the same time, this design reduces solution waste and ensures the effective utilization of resources during the production process.

[0025] Optionally, a limit block is provided at the top of the lead screw.

[0026] By adopting the above technical solution, the setting of the limit block can effectively prevent the moving block from moving beyond the predetermined range on the lead screw, avoiding equipment failures or damages caused by excessive rising or falling, thereby improving the safety and stability of equipment operation.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The design of the steam ring pipe and multiple inclined steam pipes enables steam to be more stably delivered to various areas inside the concentration barrel, improving the evaporation efficiency and ensuring a continuous and efficient evaporation process. Specifically, steam discharged from the steam pipe drives the steam ring pipe to rotate, the steam ring pipe drives the gas delivery pipe to rotate, the gas delivery pipe drives the moving block to rotate, and the moving block rotates while moving up and down on the lead screw, thereby driving the gas delivery pipe, the steam ring pipe, and multiple steam pipes thereon to perform vertical movement, achieving uniform distribution of steam throughout the concentration barrel. This dynamic steam supply method can not only avoid the problem of heat concentration caused by a single air inlet point but also ensure that every corner can be fully heated, making the evaporation process more efficient and uniform. In addition, the setting of multiple steam ring pipes further enhances this effect, ensuring temperature balance over a large range and greatly improving the evaporation rate and energy utilization efficiency.

[0028] 2. The spraying assembly evenly sprays the solution into the concentration barrel. Specifically, the assembly includes a liquid receiving tray and multiple evenly distributed spray heads. The side wall of the liquid receiving tray is fixedly connected to the top inner wall of the concentration barrel, ensuring that the solution can be evenly dispersed throughout the barrel when it enters the concentration barrel. This design not only solves the problem of uneven solution distribution in the prior art but also significantly improves the concentration efficiency and product quality. In this way, the solution can maintain good fluidity and uniformity during the concentration process, thereby better promoting the evaporation process, reducing local overheating phenomena, and extending the service life of the equipment.

[0029] 3. The design of the collection tank and collection components, especially the inclined structure of the bottom surface of the concentration barrel, facilitates the smooth flow of the concentrated solution into the collection tank and its timely discharge by the collection pump, avoiding the problem of concentrate adhering to the container wall and improving the solution collection rate. The collection tank is located on the side with a lower inner bottom surface of the concentration barrel, and the bottom surface of the concentration barrel is inclined, which can minimize the residue of the concentrate and prevent the solution from adhering to the barrel wall, causing waste or difficult cleaning. At the same time, the collection pipe, collection pump, and collection valve in the collection component work together to ensure that the solution can be quickly and cleanly discharged from the concentration barrel after concentration, reducing the risk of secondary pollution and improving the reliability and efficiency of the overall process. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the longitudinal sectional structural schematic diagram of the embodiment of the present application.

[0031] Description of the reference numerals: 1, concentration barrel; 11, air inlet hole; 12, collection tank; 2, spraying component; 21, liquid tray; 22, liquid outlet hole; 23, nozzle; 24, communication port; 3, collection component; 31, collection pipe; 32, collection pump; 33, collection valve; 34, first three-way valve; 4, evaporation component; 41, inlet pipe; 42, exhaust pipe; 43, connecting pipe; 44, telescopic pipe; 45, gas transmission pipe; 46, steam ring pipe; 47, steam pipe; 5, detection component; 51, detection pipe; 52, detection valve; 6, liquid inlet pipe; 61, second three-way valve; 7, lead screw; 71, rotating block; 8, return pipe; 9, limit block. Detailed Description of the Embodiment

[0032] The following will Figure 1-2 further describe the present application in detail.

[0033] The embodiment of the present application discloses a concentration device for preparing methoxyacetic acid. Refer to Figure 1 and Figure 2, A concentration device for preparing methoxyacetic acid includes a concentration barrel 1, a spraying assembly 2, a collection assembly 3, an evaporation assembly 4, and a detection assembly 5. A liquid inlet pipe 6 is connected to the top of one side of the concentration barrel 1. The spraying assembly 2 is arranged inside the concentration barrel 1, and the liquid inlet pipe 6 is connected to the spraying assembly 2. The spraying assembly 2 is used to spray the solution to be concentrated into the concentration barrel 1; the collection assembly 3 is arranged at the bottom of the concentration barrel 1 and is used to collect the concentrated solution; a lead screw 7 is fixedly arranged at the center of the inner bottom of the concentration barrel 1. The lead screw 7 is a reciprocating lead screw, vertically arranged and coaxially arranged with the concentration barrel 1; a rotating block 71 is connected to the lead screw 7 in a helical transmission manner along the vertical direction. A slider is arranged inside the rotating block 71. Through the rotation of the rotating block 71, the slider placed in the helical groove is pushed by the side of the helical groove on the lead screw 7 to perform axial reciprocating motion; the evaporation assembly 4 is used to make the steam contact with the sprayed solution so that the solvent in the solution evaporates together; the detection assembly 5 can assist in detecting the concentrated solution. This concentration device for preparing methoxyacetic acid can achieve an efficient evaporation and concentration process.

[0034] Refer to Figure 1 and Figure 2 , An air inlet hole 11 is opened at the center of the top of the concentration barrel 1. The evaporation assembly 4 includes an air inlet pipe 41, an exhaust pipe 42, a connecting pipe 43, a telescopic pipe 44, a gas transmission pipe 45, a steam ring pipe 46, and a steam pipe 47; the air inlet pipe 41 is fixedly connected to the top surface of the concentration barrel 1 and is connected to the air inlet hole 11; the exhaust pipe 42 is connected to the top of the side wall on one side of the concentration barrel 1; the connecting pipe 43 is L-shaped, the top end of the connecting pipe 43 is rotatably connected to the inner wall of the air inlet hole 11, and the connecting pipe 43 is connected to the air inlet pipe 41.

[0035] Refer to Figure 1 and Figure 2 , One end of the connecting pipe 43 away from the air inlet hole 11 is fixedly connected to the top end of the telescopic pipe 44. The telescopic pipe 44 is vertically arranged, and the bottom end of the telescopic pipe 44 is fixedly connected to the gas transmission pipe 45 and is connected to the gas transmission pipe 45; the gas transmission pipe 45 is horizontally arranged, one end of the gas transmission pipe 45 is fixedly connected to the rotating block 71, and the other end is fixedly connected to the steam ring pipe 46. The gas transmission pipe 45 is connected to the steam ring pipe 46; the steam ring pipe 46 is coaxially arranged with the lead screw 7. A number of steam pipes 47 are provided. All the steam pipes 47 are fixedly connected to the top of the steam ring pipe 46 and are connected to the steam ring pipe 46. The steam pipes 47 are inclined, and a number of steam pipes 47 are circumferentially arranged in a circular array with the axis of the steam ring pipe 46 as the array axis; As an embodiment not shown, a number of steam pipes 47 are also fixedly connected below the steam ring pipe 46 and are circumferentially arranged. When the steam is discharged from the steam ring pipe 46, it can be discharged through the upper and lower steam pipes 47 at the same time, which can give the steam ring pipe 46 a greater rotational force.

[0036] During operation, the solution enters the spraying assembly 2 through the liquid inlet pipe 6 and is sprayed into the concentration barrel 1 through the spraying assembly 2; the high-temperature steam enters the connecting pipe 43 through the air inlet pipe 41, enters the telescopic pipe 44 through the connecting pipe 43, enters the air delivery pipe 45 through the telescopic pipe 44, enters the steam ring pipe 46 through the air delivery pipe 45, and is discharged into the concentration barrel 1 from the steam ring pipe 46 through the steam pipe 47. When the steam is discharged from the steam pipe 47, a reaction force parallel to the inclination direction of the steam pipe 47 is given to the steam ring pipe 46, driving the steam ring pipe 46 to rotate. The rotation of the steam ring pipe 46 drives the air delivery pipe 45 to rotate. The air delivery pipe 45 drives the telescopic pipe 44 and the rotating block 71 to rotate. While the rotating block 71 rotates, it reciprocates vertically along the lead screw 7, thereby driving the air delivery pipe 45 and the steam ring pipe 46 to also reciprocate vertically while rotating, driving the telescopic pipe 44 to perform a cyclic motion of elongation and shortening, enabling the steam in the steam ring pipe 46 to be evenly discharged into the concentration barrel 1 through the steam pipe 47 and making full contact with the sprayed solution; part of the solvent in the solution evaporates after contacting the steam and is discharged through the exhaust pipe 42, and the concentrated solution enters the collection assembly 3.

[0037] Referring to Figure 1 and Figure 2 , a number of steam ring pipes 46 are provided. The number of steam ring pipes 46 are all fixedly connected to the air delivery pipe 45 and communicate with the air delivery pipe 45. The number of steam ring pipes 46 are coaxially arranged. Each steam ring pipe 46 is fixedly connected with a number of obliquely arranged steam pipes 47 at the top. The design of multiple steam ring pipes 46 enables the steam to be more evenly distributed inside the concentration barrel 1, thereby improving the heating efficiency and evaporation rate of the solution. At the same time, the setting of multiple layers of steam ring pipes 46 increases the chance of contact between the steam and the solution, further enhancing the concentration effect. In addition, the obliquely arranged steam pipes 47 on each steam ring pipe 46 can drive the corresponding steam ring pipe 46 to rotate, ensuring that the steam more effectively covers the surface of the solution, improving the heat transfer and mass transfer efficiency, shortening the concentration time, ensuring the uniform distribution of the steam throughout the concentration barrel 1, and further enhancing the evaporation effect.

[0038] Referring to Figure 1 and Figure 2 , the spraying assembly 2 includes a liquid tray 21. The side wall of the liquid tray 21 is fixedly connected to the top inner wall of the concentration barrel 1. The liquid inlet pipe 6 communicates with the liquid tray 21. The cross-section of the liquid tray 21 is circular. The liquid tray 21 is horizontally arranged and coaxially arranged with the concentration barrel 1. A number of uniformly distributed liquid holes 22 are opened on the bottom surface of the liquid tray 21. A nozzle 23 fixedly connected to the bottom surface of the liquid tray 21 is provided below each liquid hole 22.

[0039] The design of the spraying assembly 2 enables the solution to be evenly distributed inside the concentration barrel 1, improving the spraying efficiency and coverage area, thereby enhancing the evaporation effect of the solution. Specifically, the liquid receiving tray 21 is fixedly connected to the top of the inner wall of the concentration barrel 1, ensuring the structural stability and sealing performance; the liquid inlet pipe 6 is communicated with the liquid receiving tray 21 to ensure the smooth entry of the solution into the liquid receiving tray 21; the cross-section of the liquid receiving tray 21 is circular and horizontally arranged and coaxially arranged with the concentration barrel 1, enabling the solution to be evenly dispersed onto each spray head 23 under the action of gravity; the design of multiple uniformly distributed liquid outlet holes 22 in cooperation with the corresponding spray heads 23 further improves the atomization effect of the solution, increases the chance of the solution contacting the heat source, speeds up the evaporation rate, and improves the concentration efficiency. The design of the spraying assembly 2 enables the solution to form fine droplets when entering the concentration barrel 1, increasing the surface area of the solution contacting the steam, thereby improving the mass transfer efficiency.

[0040] Refer to Figure 1 and Figure 2 As shown in, the liquid receiving tray 21 is annular, and a communication port 24 is provided in the middle of the liquid receiving tray 21. The lower section of the connecting pipe 43 is located in the communication port 24, and the top of the telescopic pipe 44 is also located in the communication port 24. The annular design of the liquid receiving tray 21 can ensure the uniform dispersion of the solution inside the concentration barrel 1 and improve the spraying effect. At the same time, the communication port 24 provided in the middle of the liquid receiving tray 21 provides an installation space for the connecting pipe 43 and the telescopic pipe 44.

[0041] Refer to Figure 1 and Figure 2 As shown in, a collection groove 12 is provided on the bottom surface inside the concentration barrel 1. It can effectively collect the concentrated solution, prevent the solution from scattering at the bottom of the concentration barrel 1, and improve the collection efficiency and solution recovery rate. The collection groove 12 is located on one side of the bottom surface inside the concentration barrel 1, and the bottom surface inside the concentration barrel 1 is inclined, and the collection groove 12 is located on the lower side of the bottom surface inside the concentration barrel 1. This enables the concentrated solution to flow smoothly into the collection groove 12 on the lower side, effectively preventing the solution from remaining at the bottom of the concentration barrel 1 and improving the solution collection efficiency and the cleanliness of the device.

[0042] Refer to Figure 1 and Figure 2 As shown in, the collection assembly 3 includes a collection pipe 31, a collection pump 32, and a collection valve 33. The collection pipe 31 is communicated with the inside of the collection groove 12. The collection pump 32 is arranged on the collection pipe 31, and the collection valve 33 is also arranged on the collection pipe 31 and is located between the collection pump 32 and the collection groove 12. The communication design between the collection pipe 31 and the collection groove 12 ensures that the solution can flow smoothly into the collection pipe 31, and the collection pump 32 can provide the necessary power to quickly and smoothly discharge the solution from the concentration barrel 1. At the same time, the setting of the collection valve 33 can close the collection pipe 31 when needed to prevent the solution from leaking or flowing back, thereby ensuring the stability and safety of the entire system.

[0043] Refer toFigure 1 And Figure 2 The detection component 5 includes a detection tube 51 and a detection valve 52. The detection tube 51 is also communicated with the collection tank 12, and the detection valve 52 is arranged on the detection tube 51. The addition of the detection component 5 enables the solution concentration during the concentration process to be monitored in real time, ensuring that the concentration effect meets the expected standard. Specifically, the detection tube 51 is communicated with the collection tank 12, capable of timely collecting the concentrated solution sample, while the detection valve 52 controls the opening and closing of the detection tube 51, facilitating the operator to take samples and analyze, thereby effectively avoiding product quality problems caused by improper solution concentration.

[0044] Refer to Figure 1 And Figure 2 A first three-way valve 34 is arranged on the collection tube 31, and a second three-way valve 61 is arranged on the liquid inlet tube 6. A return liquid tube 8 is communicated between the first three-way valve 34 and the second three-way valve 61. The settings of the first three-way valve 34 and the second three-way valve 61 enable the solution to circulate flexibly between the collection tube 31 and the liquid inlet tube 6. Specifically, when some solutions during the concentration process do not reach the expected concentration, they can be sent back into the concentration barrel 1 through the return liquid tube 8 for reprocessing, thereby improving the concentration efficiency and product quality. At the same time, this design reduces solution waste and ensures the effective utilization of resources during the production process.

[0045] Refer to Figure 1 And Figure 2 A limit block 9 is arranged at the top of the lead screw 7. The setting of the limit block 9 can effectively prevent the movement of the rotating block 71 on the lead screw 7 from exceeding the predetermined range, avoiding equipment failure or damage caused by excessive rising or falling, thereby improving the safety and stability of the equipment operation.

[0046] The implementation principle of a concentration device for preparing methoxyacetic acid according to an embodiment of the present application is as follows: During operation, the solution enters the lower liquid tray 21 through the liquid inlet pipe 6, passes through the lower liquid holes 22, and is sprayed into the concentration barrel 1 through the spray head 23; the high-temperature steam enters the connecting pipe 43 through the steam inlet pipe 41, enters the telescopic pipe 44 through the connecting pipe 43, enters the gas transmission pipe 45 through the telescopic pipe 44, enters the steam ring pipe 46 through the gas transmission pipe 45, and is discharged into the concentration barrel 1 from the steam ring pipe 46 through the steam pipe 47. When the steam is discharged from the steam pipe 47, a reaction force parallel to the inclined direction of the steam pipe 47 is given to the steam ring pipe 46, driving the steam ring pipe 46 to rotate. The rotation of the steam ring pipe 46 drives the gas transmission pipe 45 to rotate, the gas transmission pipe 45 drives the telescopic pipe 44 and the rotating block 71 to rotate, and while the rotating block 71 rotates, it reciprocates vertically along the lead screw 7, thereby driving the gas transmission pipe 45 and the steam ring pipe 46 to also reciprocate vertically while rotating, driving the telescopic pipe 44 to perform a cyclic movement of elongation and shortening, so that the steam in the steam ring pipe 46 can be evenly discharged into the concentration barrel 1 through the steam pipe 47 and make full contact with the sprayed solution; part of the solvent in the solution evaporates after contacting the steam and is discharged through the exhaust pipe 42, and the concentrated solution enters the collection tank 12.

[0047] The connection design between the collection pipe 31 and the collection tank 12 ensures that the solution can flow smoothly into the collection pipe 31, and the collection pump 32 can provide the necessary power to quickly and smoothly discharge the solution from the concentration barrel 1. At the same time, the setting of the collection valve 33 can close the collection pipe 31 when needed to prevent the solution from leaking or flowing back, thus ensuring the stability and safety of the entire system. The detection pipe 51 is connected to the collection tank 12 and can collect the concentrated solution sample in a timely manner, while the detection valve 52 controls the opening and closing of the detection pipe 51, facilitating the operator to take samples and analyze, thereby effectively avoiding product quality problems caused by improper solution concentration.

[0048] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A concentrating device for preparing methoxyacetic acid, characterized in that: The invention comprises a concentration barrel (1), a spray assembly (2), a collection assembly (3) and an evaporation assembly (4); a liquid inlet pipe (6) is connected to the top of one side of the concentration barrel (1); the spray assembly (2) is arranged in the concentration barrel (1); the liquid inlet pipe (6) is connected to the spray assembly (2); the spray assembly (2) is used to spray a solution to be concentrated into the concentration barrel (1); the collection assembly (3) is arranged at the bottom of the concentration barrel (1) and is used to collect the concentrated solution; a lead screw (7) is fixedly arranged at the center of the bottom of the concentration barrel (1); the lead screw (7) is a reciprocating lead screw, and the lead screw (7) is vertically arranged and coaxially arranged with the concentration barrel (1); a rotating block (71) is connected to the lead screw (7) in a vertical direction by spiral transmission; an air inlet hole (11) is opened at the center of the top of the concentration barrel (1); The evaporation assembly (4) comprises an air inlet pipe (41), an exhaust pipe (42), a connecting pipe (43), a telescopic pipe (44), an air delivery pipe (45), a steam ring pipe (46) and a steam pipe (47); the air inlet pipe (41) is fixedly connected to the top surface of the concentration barrel (1) and is in communication with the air inlet hole (11); the exhaust pipe (42) is in communication with the top of the side wall of one side of the concentration barrel (1); the connecting pipe (43) is L-shaped, the top end of the connecting pipe (43) is rotatably connected to the inner wall of the air inlet hole (11), and the connecting pipe (43) is in communication with the air inlet pipe (41); the end of the connecting pipe (43) away from the air inlet hole (11) is connected to the telescopic pipe (44); ), the telescopic tube (44) is vertically arranged, and the bottom end of the telescopic tube (44) is fixedly connected to the gas pipe (45); the gas pipe (45) is horizontally arranged, one end of the gas pipe (45) is fixedly connected to the rotating block (71), and the other end is fixedly connected to the steam ring pipe (46); the steam ring pipe (46) is coaxially arranged with the lead screw (7), and a plurality of steam pipes (47) are provided, and the plurality of steam pipes (47) are all fixedly connected to the top of the steam ring pipe (46); the steam pipe (47) is inclined, and the plurality of steam pipes (47) are arranged in a circular array with the axis of the steam ring pipe (46) as the array axis.

2. A concentrating device for preparing methoxyacetic acid according to claim 1, characterized in that: A plurality of the steam ring pipes (46) are provided, and the plurality of the steam ring pipes (46) are fixedly connected to the gas delivery pipe (45) and communicated with the gas delivery pipe (45). The plurality of the steam ring pipes (46) are coaxially arranged, and a plurality of the inclined steam pipes (47) are fixedly connected to the top of each steam ring pipe (46).

3. A concentrating device for preparing methoxyacetic acid according to claim 2, characterized in that: The spray assembly (2) comprises a lower liquid pan (21), the side wall of the lower liquid pan (21) is fixedly connected to the top of the inner wall of the concentration barrel (1), the liquid inlet pipe (6) is connected to the lower liquid pan (21), the cross section of the lower liquid pan (21) is circular, the lower liquid pan (21) is arranged horizontally and coaxially with the concentration barrel (1), a plurality of evenly distributed lower liquid holes (22) are provided on the bottom surface of the lower liquid pan (21), and a spray head (23) fixedly connected to the bottom surface of the lower liquid pan (21) is provided below each of the lower liquid holes (22).

4. A concentrating device for preparing methoxyacetic acid according to claim 3, characterized in that: The lower liquid pan (21) is annular, and a communication opening (24) is provided in the middle of the lower liquid pan (21). The lower section of the connecting pipe (43) is located in the communication opening (24), and the top end of the telescopic pipe (44) is also located in the communication opening (24).

5. A concentrating device for preparing methoxyacetic acid according to claim 4, characterized in that: A collecting groove (12) is provided on the bottom surface of the concentration barrel (1).

6. A concentrating device for preparing methoxyacetic acid according to claim 5, characterized in that: The collecting groove (12) is located on one side of the inner bottom surface of the concentration barrel (1); the inner bottom surface of the concentration barrel (1) is inclined; and the collecting groove (12) is located on the lower side of the inner bottom surface of the concentration barrel (1).

7. A concentrating device for preparing methoxyacetic acid according to claim 6, characterized in that: The collecting assembly (3) comprises a collecting pipe (31), a collecting pump (32) and a collecting valve (33); the collecting pipe (31) is connected to the collecting tank (12); the collecting pump (32) is arranged on the collecting pipe (31); the collecting valve (33) is also arranged on the collecting pipe (31) and is located between the collecting pump (32) and the collecting tank (12).

8. A concentrating device for preparing methoxyacetic acid according to claim 7, characterized in that: It also comprises a detection assembly (5), the detection assembly (5) comprising a detection tube (51) and a detection valve (52), the detection tube (51) is also connected to the collection tank (12), and the detection valve (52) is arranged on the detection tube (51).

9. A concentrating device for preparing methoxyacetic acid according to claim 8, characterized in that: The collecting pipe (31) is provided with a first three-way valve (34), the liquid inlet pipe (6) is provided with a second three-way valve (61), and a liquid return pipe (8) is connected between the first three-way valve (34) and the second three-way valve (61).

10. A concentrating device for preparing methoxyacetic acid according to claim 9, characterized in that: A limit block (9) is provided at the top end of the lead screw (7).

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