Drying equipment for producing glyphosate isopropylamine salt soluble liquid

Abstract

The utility model discloses a drying equipment for glyphosate isopropylamine salt soluble liquid production relates to pesticide production technical field, including drying cavity, diversion pipe, it is configured as rotatable and axially telescopic and is located in drying cavity, including: vertical portion, along the axial sleeve in drying cavity, and its axial telescopic distance is at least the drying cavity height two fifths; The folding portion guides the fluid in the vertical portion from the constant flow path to the continuous "S" shape flow path, and when the vertical portion rotates and axially telescopes, the folding portion continuously changes the folding amount and forms dynamic stirring. The utility model through the rotation telescopic composite movement of diversion pipe and the collaborative deformation of folding portion, drive the three -dimensional dynamic track of nozzle portion in drying cavity formation, broke the drying dead zone and local overheating phenomenon caused by fixed flow field in traditional equipment, realized the even drying of material space global, no dead angle, significantly improved the consistency of product moisture content.

Description

Technical Field

[0001] This utility model relates to the field of pesticide production technology, specifically to a drying device for the production of glyphosate isopropylamine salt soluble concentrate. Background Technology

[0002] Glyphosate, as a globally dominant broad-spectrum herbicide, is widely used in the market for its ammonium salt soluble formulation due to its cost advantage. In the production of glyphosate isopropylamine salt soluble formulations, the drying process is a crucial step that determines the purity of the active ingredient and the quality of subsequent formulations.

[0003] Traditional flash dryers and similar equipment commonly suffer from uneven flow field distribution within the drying chamber, leading to localized overheating and drying dead zones when processing wet filter cakes. This results in uneven moisture content in the final product, degradation of some heat-sensitive components, and even disruption to stable continuous production due to material adhesion and agglomeration. Although industry attempts have been made to optimize this by improving agitation or hot air distribution, fixed flow channel and nozzle designs struggle to achieve dynamic, adaptive coverage of the entire drying space, and the gas-solid coupling mass transfer efficiency between airflow and material still needs further improvement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a drying device for the production of glyphosate isopropylamine salt soluble concentrate.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A drying apparatus for the production of glyphosate isopropylamine salt soluble concentrate, comprising:

[0007] Drying chamber;

[0008] A guide tube, configured to be rotatable and axially telescopically disposed within the drying chamber, includes:

[0009] The vertical part is fitted axially into the drying chamber, and its axial extension distance is at least two-fifths of the height of the drying chamber;

[0010] The folding section guides the fluid in the vertical section from a constant flow path to a continuous "S"-shaped flow path. When the vertical section rotates and extends or retracts axially, the folding amount of the folding section changes continuously to form dynamic stirring.

[0011] The nozzles are symmetrically distributed on the outer wall of the folded part along a continuous "S"-shaped flow path, wherein the spray position of each nozzle relative to the spatial position of the dynamic stirring forms a three-dimensional scattering airflow output to the material being dried.

[0012] Preferably, the folded portion is composed of several elastic segments and several rigid segments connected alternately, which together constitute a controllable deformation structure during the expansion and contraction of the guide tube.

[0013] Preferably, when the vertical part changes from an extended state to an extended state, it drives the adjacent rigid segments to change from parallel distribution to opposite tilt, so that the folded part as a whole changes from a compressed state to an extended state.

[0014] Preferably, the change in the included angle between adjacent rigid segments is proportional to the change in the distance between the corresponding elastic segment and the inner wall of the drying chamber.

[0015] Preferably, the heat flow within the folded portion is directed through several nozzles to form a vertical radiation relative to a continuous "S"-shaped flow path.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention uses the combined rotational and telescopic motion of the guide tube and the coordinated deformation of the folding part to drive the nozzle to form a three-dimensional dynamic trajectory in the drying chamber. This breaks the drying dead zone and local overheating phenomenon caused by the fixed flow field in traditional equipment, and achieves uniform drying of the material in the entire space without dead angles, significantly improving the consistency of product moisture content. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a partial cross-sectional view of the present invention.

[0020] Figure 2 This is a schematic diagram of the horizontal compression state structure of the guide tube of this utility model.

[0021] Figure 3 This is a schematic diagram of the mid-stage extension state of the guide tube of this utility model;

[0022] Figure 4 This is a schematic diagram of the fully extended state of the guide tube of this utility model.

[0023] The diagram is labeled as follows: 1. Drying chamber; 2. Guide pipe; 21. Vertical section; 22. Folded section; 221. Elastic section; 222. Rigid section; 23. Spray head. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0025] Example

[0026] like Figures 1-4 As shown, a drying device for the production of glyphosate isopropylamine salt soluble concentrate includes:

[0027] Drying chamber 1;

[0028] The guide tube 2 is configured to be rotatable and axially telescopic within the drying chamber 1;

[0029] The air inlet end of the guide pipe 2 is connected to the hose of the external hot air furnace. A drive mechanism is set on the drying chamber 1. The drive mechanism includes a telescopic component and a rotating component. The telescopic component includes a cylinder installed on the drying chamber 1. The first step of axial telescopic movement is to rotate one end of the extended plate added to the telescopic end of the cylinder to connect to the outer wall of the guide pipe 2 (the telescopic length of the cylinder telescopic end shown in the figure can be adjusted according to the actual use). At the same time, a rotating component is set on the top of the extended plate at the telescopic end of the cylinder. The rotating component includes a motor gear transmission assembly connected to the guide pipe 2, which realizes the second step of rotation on the basis of axial telescopic movement. The order of the two steps can be reversed.

[0030] The telescopic component can also achieve axial extension and retraction of the guide tube 2 through a motor screw assembly, a motor connecting rod, or other techniques known to those skilled in the art. The rotating component can also achieve rotation of the guide tube 2 through a motor belt assembly, any motor linkage assembly, or other techniques known to those skilled in the art.

[0031] include:

[0032] The vertical part 21 is axially fitted inside the drying chamber 1, and its axial extension distance is at least two-fifths of the height of the drying chamber 1.

[0033] The folding part 22 guides the fluid in the vertical part 21 from a constant flow path to a continuous "S" shaped flow path. When the vertical part 21 rotates and extends and retracts axially, the folding amount of the folding part 22 changes continuously to form dynamic stirring.

[0034] Spray head 23, several spray heads 23 are symmetrically distributed on the outer wall of the folded part 22 along a continuous "S" shaped flow path, wherein the spray position of each spray head 23 relative to the spatial position of dynamic stirring forms a three-dimensional scattering airflow output to the material being dried.

[0035] like Figure 1 As shown, the wet glyphosate filter cake obtained from the previous process is continuously fed into the drying chamber 1 via an external screw conveyor. The guide pipe 2 is started to rotate and quickly break and disperse the wet filter cake through the folded part 22. At the same time, high-temperature hot air introduced from the hot air furnace is sprayed out from several nozzles 23 and fully mixed with the broken wet material (the air outlet of the hot air furnace and the connection end of the vertical part 21 are connected by a flexible hose), so that the moisture is evaporated. The dried fine powder is carried up by the hot air and discharged from the outlet at the top of the drying chamber 1 into the external cyclone separator and bag filter, thereby separating it from the exhaust gas and obtaining uniform and dry glyphosate technical powder.

[0036] To prevent the above materials from having dead zones or being locally over-dryed in the drying chamber 1, the vertical part 21 is activated to extend and retract during the stirring and drying process. The axial extension and retraction causes the folded part 22 to switch back and forth between the extended and compressed states. At this time, the "S" of the continuous "S" shaped flow channel is continuously adjusted, which strengthens the stirring and fusion of gas-solid coupling heat and mass transfer.

[0037] like Figures 2-4 As shown, further, when the axial extension and contraction motion is superimposed on the rotation, the extension and contraction motion causes the entire folded section 22 to undergo compression and expansion deformation. Consequently, several nozzles 23 on the folded section 22 move up and down within the drying chamber 1, their motion trajectory evolving from simple circular motion to complex three-dimensional spiral motion. The high-speed scattering airflow from the nozzles 23 can thus cover materials at different radial positions and axial heights within the drying chamber 1, eliminating dead zones in a fixed airflow mode. The continuous change in the position and direction of the nozzles 23 creates a dynamic turbulent field on the material surface with constantly varying intensity and point of application. This unsteady turbulence can continuously and powerfully disrupt the gas film boundary layer on the material surface (the main resistance to heat and mass transfer), greatly enhancing the efficiency of moisture diffusion from the material's interior to the surface and its eventual removal by the airflow (i.e., gas-solid coupling mass transfer).

[0038] The folding section 22 is composed of several elastic segments 221 and several rigid segments 222 connected alternately, which together form a controllable deformation structure during the expansion and contraction of the guide tube 2. When the vertical section 21 changes from the downward extension state to the upward retraction state, it drives the adjacent rigid segments 222 to change from parallel distribution to opposite tilt, so that the folding section 22 as a whole changes from a compressed state to an extended state.

[0039] like Figure 2As shown, furthermore, when adjacent rigid sections 222 are in a compressed parallel state, the folded parts 22 converge and densely occupy the bottom space of the drying chamber 1. The core benefit of this process is the formation of a high-energy vortex zone, achieving bottom-level attack. That is, several nozzles 23 are concentrated in the space, and the high-speed airflows ejected overlap and interfere with each other, forming a vortex zone with extremely high energy density and extremely high turbulence intensity at the bottom of the drying chamber 1. This is usually the area where wet materials first enter, have the highest humidity, and are most prone to agglomeration. This high-energy vortex zone can concentrate its attack on high-humidity materials, quickly breaking up large pieces of wet materials with maximum mechanical shear force and heat transfer efficiency, evaporating surface moisture, and achieving efficient cell wall breaking and preheating.

[0040] like Figures 3-4 As shown, further, when the folded portion 22 changes from a compressed state to an axially extended state, the adjacent rigid segments 222 expand axially at an acute angle through the elastic segments 221 until they fill the entire drying chamber 1. This process achieves three-dimensional and omnidirectional flow field coverage. As the folded portion 22 extends, the nozzles 23 are distributed from the bottom to the top, achieving uniform coverage of the entire axial space of the drying chamber 1.

[0041] like Figures 2-4 As shown, the hot air and stirring action are no longer limited to the bottom but extend throughout the entire material bed, ensuring that the material at all heights is dried uniformly and thoroughly during the ascent. Simultaneously, a gradient drying environment is created, optimizing energy utilization. This extended structure achieves gradient drying: the material at the bottom is the wettest and can withstand higher hot air intensity and mechanical action, while the material at the top is nearly dry and requires gentler handling to prevent excessive powder carryover. Through design, the airflow velocity at the bottom nozzles 23 can be slightly higher and slightly lower at the top, forming a drying intensity gradient from strong to weak from bottom to top. This better matches the actual drying curve of the material and improves the overall efficiency of thermal energy utilization. This stage is the consolidation and homogenization stage of the drying process, ensuring that the moisture content of the material is consistent throughout the entire space, avoiding localized over-drying or under-drying.

[0042] like Figure 2As shown, further, when two adjacent rigid sections 222 move from an acute angle to a parallel state, a dynamically changing wedge-shaped gap is formed between them. Within this gap, the elastic section 221 constitutes the flexible inner wall of this roller pressing zone. When material containing incompletely dried small particles or newly formed agglomerates enters this gap with the fluidized bed, it undergoes a transient process of being squeezed, stretched, and released. For wet materials or small agglomerates with a certain degree of plasticity, this squeezing process effectively breaks them up mechanically, exposing new, moist inner surfaces and greatly increasing the drying area of ​​the subsequent airflow. Even if the material is not completely crushed, this flexible squeezing action generates micro-stress within the material particles, helping to disrupt the capillary structure inside the material and forcing the trapped internal moisture to migrate more effectively to the particle surface, thus significantly enhancing the mass transfer process and achieving auxiliary drying. This is integrated into the conventional rotation and extension / retraction motion of the guide pipe 2 without adding any additional moving parts or energy consumption, achieving the dual benefits of crushing and enhanced drying.

[0043] The change in the included angle between adjacent rigid segments 222 is directly proportional to the change in the distance between the corresponding elastic segment 221 and the inner wall of the drying chamber 1.

[0044] like Figure 2 As shown, due to the folding structure of the 22 section being closed, the distance between the elastic section 221 and the inner wall of the drying chamber 1 becomes smaller. The rotating elastic section 221 can touch the wet and soft material adhering to the near wall area of ​​the drying chamber 1, preventing the wet and soft material from adhering and clumping here. This allows the airflow ejected from the nozzle 23 to reach the chamber wall more effectively, eliminating the flow dead zone on the bottom side wall.

[0045] The heat flow within the folded section 22 is formed by vertical radiation relative to a continuous “S” shaped flow path through several nozzles 23.

[0046] like Figures 2-4 As shown, vertical nozzles 23 are equidistantly arranged along the "S"-shaped flow channel, meaning that the airflow is periodically and uniformly diverted from the main flow and directed towards the material. This prevents the airflow energy from attenuating at the end of the flow channel, ensuring uniform energy output from the nozzles 23 to the end of the "S"-shaped flow channel. For the external material, a uniform heat network composed of multiple vertical jet points is formed on the same cross-section of the drying chamber 1, rather than a concentrated impact from a single direction. This prevents localized overheating and overdrying while other areas are under-dried, achieving uniform drying and a highly consistent product moisture content.

[0047] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A drying device for producing glyphosate isopropylamine salt soluble concentrate, characterized in that, include: Drying chamber; A guide tube, configured to be rotatable and axially telescopically disposed within the drying chamber, includes: The vertical part is fitted axially into the drying chamber, and its axial extension distance is at least two-fifths of the height of the drying chamber; The folding section guides the fluid in the vertical section from a constant flow path to a continuous "S"-shaped flow path. When the vertical section rotates and extends or retracts axially, the folding amount of the folding section changes continuously to form dynamic stirring. The nozzles are symmetrically distributed on the outer wall of the folded part along a continuous "S"-shaped flow path, wherein the spray position of each nozzle relative to the spatial position of the dynamic stirring forms a three-dimensional scattering airflow output to the material being dried.

2. The drying equipment for producing glyphosate isopropylamine salt soluble concentrate according to claim 1, characterized in that: The folded section is composed of several elastic segments and several rigid segments connected alternately, which together form a controllable deformation structure during the expansion and contraction of the guide tube.

3. The drying equipment for producing glyphosate isopropylamine salt soluble concentrate according to claim 2, characterized in that: When the vertical part changes from an extended state to an extended state, it drives the adjacent rigid segments to change from parallel distribution to opposite tilt, so that the entire folded part changes from a compressed state to an extended state.

4. The drying equipment for producing glyphosate isopropylamine salt soluble concentrate according to claim 3, characterized in that: The change in the included angle between adjacent rigid segments is proportional to the change in the distance between the corresponding elastic segment and the inner wall of the drying chamber.

5. The drying equipment for producing glyphosate isopropylamine salt soluble concentrate according to claim 4, characterized in that: The heat flow within the folded section is directed through several nozzles to form a vertical radiation relative to the continuous "S"-shaped flow path.

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