Crystallization system for producing glyphosate technical

Abstract

The invention discloses a crystallization system for glyphosate technical production, and relates to the technical field of glyphosate technical production, the crystallization system comprises a crystallization kettle and a filter box, the two ends of the filter box are provided with a liquid inlet and a liquid outlet respectively, and the sides, close to the liquid inlet, of the top end and the lower end of the filter box are provided with a cleaning port and a discharge port respectively; an upper plugging plate and a lower plugging plate are detachably mounted on the cleaning port and the discharge port respectively, and a plurality of filter plates are movably mounted in the crystallization kettle; and driving mechanisms are arranged on the two sides of the filtering box. According to the invention, a plurality of filter plates are adopted, and the pore diameters of the filter plates are designed from large to small, so that large-particle crystals can be preliminarily filtered and the filter resistance can be dispersed, the particle filter load borne by each layer of filter plate is relatively small, the resistance is increased gently, fluid is easier to pass through, and the amount of fluid passing through the filter system in unit time is increased; therefore, the filtering flux and the overall filtering efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of glyphosate technical production, and in particular to a crystallization system for glyphosate technical production. Background Art

[0002] Glyphosate, chemical name N-(phosphomethyl)glycine, chemical formula C3H8NO5P, is a systemic broad-spectrum herbicide, an organophosphorus compound, specifically a phosphonate. It is used to kill weeds, especially annual broadleaf weeds that compete with crops.

[0003] In the production process of glyphosate technical, crystallization and filtration are key links. Traditional crystallization systems often have the problem of low filtration efficiency. Due to the lack of effective graded filtration design, all crystals are concentrated on the same filter medium for interception, resulting in large filtration resistance and low flux, which affects production efficiency.

[0004] In addition, the filter plate is easily damaged by the impact and clogging of large particle crystals, has a short service life, and requires frequent replacement and maintenance, which increases production costs and equipment downtime.

[0005] Traditional equipment also has inconveniences in cleaning the filter plates. Incomplete cleaning will affect the subsequent filtration effect and it is difficult to meet the needs of efficient and stable production of glyphosate technical. Summary of the invention

[0006] In order to solve the problems mentioned in the above background technology, the present invention provides a crystallization system for the production of glyphosate technical.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A crystallization system for producing glyphosate technical, comprising a crystallization kettle and a filter box, wherein the two ends of the filter box are respectively provided with a liquid inlet and a liquid outlet, the top end and the lower end of the filter box are respectively provided with a cleaning port and a discharge port on one side close to the liquid inlet, and the cleaning port and the discharge port are respectively detachably provided with an upper blocking plate and a lower blocking plate, and a plurality of filter plates are movably provided inside the crystallization kettle;

[0009] Both sides of the filter box are provided with a driving mechanism, the output end of the driving mechanism is connected to the filter plate through a magnetic force, and the filter plate is driven to move horizontally by the driving mechanism.

[0010] Preferably, the filter mesh diameters of the filter plates are different, and the filter mesh diameters of the filter plates closer to the liquid inlet increase successively.

[0011] Preferably, the driving mechanism is a scissors-type structure, which includes a plurality of scissors-type arms arranged crosswise with each other, the middle positions of adjacent scissors-type arms are rotatably connected by a middle moving pin, the two ends of adjacent scissors-type arms are rotatably connected by a side moving pin, and the two scissors-type arms near one end of the liquid inlet are rotatably connected to the middle static pin, and the middle static pin is fixed to the top of the filter box.

[0012] Preferably, a first magnetic suction cup is installed on the side of the middle moving pin shaft close to the filter box, and a second magnetic suction cup is fixed on both sides of the filter plate. The second magnetic suction cup is exactly aligned with the first magnetic suction cup, and the second magnetic suction cup and the first magnetic suction cup attract each other through the side wall of the filter box and remain relatively still.

[0013] Preferably, a first driving rod is connected to one of the scissor arms, a first gripping rod is fixedly connected between the first driving rods on both sides, and the driving mechanism is installed inside the protective shell.

[0014] Preferably, the number of the filter plates is two to four, and the multiple filter plates are parallel to each other.

[0015] Preferably, a guide rail is fixed on the outer side wall of the filter box, and the middle moving pin is slidably mounted on the guide rail via a first sliding block.

[0016] Preferably, support shafts are fixed on both sides of the top of the filter box, a V-shaped connecting rod is rotatably installed on the top of the support shaft, a horizontal slide rail is provided between the two V-shaped connecting rods, the horizontal slide rail is rotatably connected to one of the branches of the V-shaped connecting rod, the middle moving pin shaft is hollow inside, and a vertical shaft is rotatably installed inside the middle moving pin shaft, and one end of the vertical shaft is fixedly connected to the first magnetic suction cup.

[0017] Preferably, a straight connecting rod is fixed to the other end of the vertical axis, and the end of the straight connecting rod away from the vertical axis is rotatably connected to a second sliding block, and the second sliding block is slidably mounted on a horizontal slide rail.

[0018] Preferably, the plurality of straight connecting rods are parallel to each other, and a second gripping rod is connected to a branch of the V-shaped connecting rod close to the liquid inlet and away from the horizontal slide rail.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Improve filtration efficiency: The present invention adopts a plurality of filter plates with pore sizes from large to small, which can initially filter larger particle crystals and disperse the filtration resistance, so that the particle filtration load borne by each layer of filter plate is relatively small, the resistance increases smoothly, the fluid is easier to pass through, and the amount of fluid passing through the filtration system per unit time increases, thereby improving the filtration flux and the overall filtration efficiency.

[0021] 2. Extend the service life of the filter plate: The large-aperture filter plate in the front intercepts most of the large-particle crystals to prevent them from wearing and clogging the small-aperture filter plate in the back, reducing the risk of damage to the filter plate, extending the service life, reducing the frequency of replacement, and reducing the maintenance cost of the filtration equipment. At the same time, it also extends the maintenance cycle of the equipment and improves production continuity.

[0022] 3. Convenient cleaning and maintenance of the filter plate: The filter plate can be retracted and released through the driving mechanism. When the filter plate moves to the top of the discharge port, the crystals can be discharged. When it moves to the bottom of the cleaning port, the upper blocking plate can be opened for cleaning. And with the help of a special connecting rod and slide rail structure, the filter plate can be rotated 90 degrees parallel to the liquid flow direction, which is convenient for the introduction of cleaning liquid for flushing, further improving the cleaning efficiency of the filter plate and ensuring the stability of the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a general schematic diagram of the present invention;

[0025] Figure 2 A three-dimensional diagram of the filter box of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of removing the protective shell;

[0027] Figure 4 It is a rear view of the filter box of the present invention;

[0028] Figure 5 A top view of the filter box of the present invention;

[0029] Figure 6 A bottom view of the filter box of the present invention;

[0030] Figure 7 It is a cross-sectional view of the filter box of the present invention from the main perspective;

[0031] Figure 8 This is a schematic diagram of the installation position of the filter plate inside the filter box of the present invention;

[0032] Fig. 9 It is a schematic diagram of the relative position relationship between the driving mechanism and the filter plate of the present invention;

[0033] Fig.10It is a schematic diagram of the matching relationship between the driving mechanism and the filter plate of the present invention;

[0034] Fig.11 It is a schematic diagram of the driving mechanism structure of the present invention;

[0035] Fig.12 It is a schematic diagram of the motion state when the driving mechanism of the present invention pushes the filter plate to move;

[0036] Fig.13 It is a schematic diagram of the matching relationship between the second magnetic chuck and the first magnetic chuck of the present invention;

[0037] Fig.14 It is a schematic diagram of the matching relationship between the vertical axis and the middle movable pin axis of the present invention;

[0038] Fig.15 It is a schematic diagram of the installation relationship between the horizontal slide rail and the vertical axis of the present invention from a first viewing angle;

[0039] Fig.16 A schematic diagram showing the installation relationship between the horizontal slide rail and the vertical axis of the present invention from a second viewing angle;

[0040] Fig.17 A schematic diagram showing the installation relationship between the horizontal slide rail and the vertical axis of the present invention from a third viewing angle;

[0041] Fig.18 for Fig.16 A zoomed-in detail of position A in the middle;

[0042] Fig.19 for Fig.17 Enlarged detail of position B in the middle;

[0043] In the figure: 1. filter box; 101. liquid inlet; 102. liquid outlet; 103. upper plugging plate; 104. lower plugging plate; 105. protective shell; 2. filter plate; 201. second magnetic suction cup; 3. driving mechanism; 301. scissor arm; 302. middle moving pin; 303. side moving pin; 304. middle static pin; 305. first slider; 306. guide rail; 307. first driving rod; 308. first gripping rod; 309. first magnetic suction cup; 4. vertical axis; 401. supporting axis; 402. V-shaped connecting rod; 403. horizontal slide rail; 404. second gripping rod; 405. straight connecting rod; 406. second slider; 5. crystallization kettle. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Example 1

[0046] Reference Figure 1-19 A crystallization system for producing glyphosate technical, comprising a crystallization kettle 5 and a filter box 1, wherein both ends of the filter box 1 are respectively provided with a liquid inlet 101 and a liquid outlet 102, a cleaning port and a discharge port are respectively provided at the top and a side of the lower end of the filter box 1 close to the liquid inlet 101, and an upper blocking plate 103 and a lower blocking plate 104 are respectively detachably installed on the cleaning port and the discharge port, and a plurality of filter plates 2 are movably installed inside the crystallization kettle 5, the number of the filter plates 2 is two to four, and the plurality of filter plates 2 are parallel to each other;

[0047] Both sides of the filter box 1 are provided with a driving mechanism 3, and the output end of the driving mechanism 3 is connected to the filter plate 2 by magnetic force. The filter plate 2 is driven to move horizontally by the driving mechanism 3. The filter mesh diameters of each filter plate 2 are different, and the filter mesh diameters of the filter plates 2 close to the liquid inlet 101 are increased successively. After cooling and crystallizing by the crystallization kettle 5, the liquid in the crystallization kettle 5 is transferred to the filter box 1. The liquid enters the filter box 1 through the liquid inlet 101, and is filtered layer by layer through each filter plate 2. First, the crystals with larger particles are initially filtered out, and then continue to filter step by step. Through the method of graded filtration, the crystals with larger particles can be quickly filtered out, and the filtration resistance can be dispersed. Since the aperture of the filter plate 2 is from large to small, the filter plate 2 at the back only needs to filter the crystals with smaller particles. In this way, the particle filtration load borne by each layer of the filter plate 2 is relatively small, and the resistance increases more gently. The fluid can pass through the entire filtration system more easily, which helps to improve the filtration flux, that is, the amount of fluid passing through the filtration system per unit time, and improve the filtration efficiency.

[0048] The large-aperture filter plate 2 in the front is responsible for intercepting most of the larger particle crystals, thus avoiding the wear and blockage of the small-aperture filter plate 2 in the rear by these large particles, extending the service life of the filter plate 2, and reducing the maintenance cost of the filtering equipment. Since the burden on each filter plate 2 is relatively light, and the entire filtering system is not easily completely failed due to sudden blockage of a filter plate 2, the maintenance cycle of the filtering equipment can be extended.

[0049] Example 2

[0050] Reference Figure 1-19The difference between this embodiment and embodiment 1 is that the driving mechanism 3 is a scissor structure, and the driving mechanism 3 includes a plurality of scissor arms 301 arranged crosswise with each other, the middle positions of adjacent scissor arms 301 are rotatably connected by a middle movable pin 302, and the two ends of adjacent scissor arms 301 are rotatably connected by a side movable pin 303, and the two scissor arms 301 near one end of the liquid inlet 101 are rotatably connected to the middle static pin 304, and the middle static pin 304 is fixed to the top of the filter box 1, and one of the scissor arms 301 is connected to the middle static pin 304. A first driving rod 307 is connected, and a first gripping rod 308 is fixedly connected between the first driving rods 307 on both sides. The driving mechanism 3 is installed inside the protective housing 105. When the first gripping rod 308 is held by hand, the scissor arm 301 directly connected thereto is driven by the first driving rod 307 to rotate relative to the middle static pin shaft 304, and the plurality of middle dynamic pin shafts 302 can be pushed in a linkage manner to move in a direction away from the middle static pin shaft 304, and the spacing between adjacent middle static pin shafts 304 will also become larger (refer to Fig.12 ), a first magnetic suction cup 309 is installed on one side of the middle moving pin shaft 302 close to the filter box 1, thereby being able to drive the first magnetic suction cup 309 to follow and move, and second magnetic suction cups 201 are fixed on both sides of the filter plate 2, the second magnetic suction cup 201 is exactly aligned with the first magnetic suction cup 309, and the second magnetic suction cup 201 and the first magnetic suction cup 309 attract each other through the side wall of the filter box 1 and remain relatively still, thereby being able to drive the filter plate 2 to follow and move through the magnetic attraction force, and then being able to retract and release each filter plate 2, when each filter plate 2 is separated, filtering work can be performed through the filter plate 2, and the first driving rod 307 is pushed in the reverse direction, which can drive each filter plate 2 to move toward the liquid inlet 101 and reset (reaching Figure 7-9 The distance between the filter plates 2 will also become smaller, and the filter plates 2 will move to the top of the discharge port. At this time, the lower blocking plate 104 on the discharge port is removed, and the crystals filtered by the filter plates 2 can be discharged downward by gravity.

[0051] At this time, the filter plate 2 is located directly below the cleaning port. By opening the upper blocking plate 103 , the cleaning brush can be extended from the cleaning port into the filter box to clean each filter plate 2 , thereby improving the cleaning and maintenance efficiency of the filter plate 2 .

[0052] A guide rail 306 is fixed on the outer wall of the filter box 1, and the middle movable pin 302 is slidably installed on the guide rail 306 through the first slider 305. The cooperation between the guide rail 306 and the first slider 305 ensures the stability of the driving mechanism 3 during operation.

[0053] Example 3

[0054] Reference Figure 1-19, the difference between this embodiment 3 and embodiment 2 is that support shafts 401 are fixed on both sides of the top of the filter box 1, and a V-shaped connecting rod 402 is rotatably installed on the top of the support shaft 401. A horizontal slide rail 403 is provided between the two V-shaped connecting rods 402, and the horizontal slide rail 403 is rotatably connected to one of the branches of the V-shaped connecting rod 402. The middle movable pin shaft 302 is hollow inside, and a vertical shaft 4 is rotatably installed inside the middle movable pin shaft 302. One end of the vertical shaft 4 is fixedly connected to the first magnetic suction cup 309, and a straight connecting rod 405 is fixed to the other end of the vertical shaft 4. The end of the straight connecting rod 405 away from the vertical shaft 4 is rotatably connected to the second slider 406, and the second slider 406 is slidably installed on the horizontal slide rail 403. The multiple straight connecting rods 405 are parallel to each other, and the branch of the V-shaped connecting rod 402 close to the liquid inlet 101 away from the horizontal slide rail 403 is connected to the second gripping rod 404;

[0055] When the filter plates 2 are separated and switched to the filtering state, due to the presence of the horizontal slide rail 403, the second slider 406 slides on the horizontal slide rail 403 during the movement of the middle moving pin 302, and the multiple straight connecting rods 405 remain parallel to each other and will not get stuck. When the spacing between the multiple middle moving pins 302 is adjusted to the maximum state, when one of the V-shaped connecting rods 402 is driven to rotate by the second gripping rod 404, the horizontal slide rail 403 can be driven to rotate as a whole, and the cooperation of the straight connecting rod 405 and the second slider 406 can drive the multiple vertical shafts 4 to rotate synchronously, and then the magnetic attraction between the first magnetic suction cup 309 and the second magnetic suction cup 201 can be used to drive the multiple filter plates 2 to rotate ninety degrees, so that the filter plate 2 is parallel to the liquid flow direction. At this time, cleaning liquid can be introduced into the filter box 1, and the filter plate 2 is rinsed by the cleaning liquid, thereby further improving the cleaning efficiency of the filter plate 2.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crystallization system for producing glyphosate technical, comprising a crystallization kettle (5) and a filter box (1), characterized in that: The filter box (1) is provided with a liquid inlet (101) and a liquid outlet (102) at both ends thereof, a cleaning port and a discharge port are provided at the top and the bottom of the filter box (1) on a side close to the liquid inlet (101), and an upper sealing plate (103) and a lower sealing plate (104) are detachably mounted on the cleaning port and the discharge port, respectively, and a plurality of filter plates (2) are movably mounted inside the crystallization kettle (5); A driving mechanism (3) is provided on both sides of the filter box (1); the output end of the driving mechanism (3) is connected to the filter plate (2) via magnetic force, and the filter plate (2) is driven by the driving mechanism (3) to move horizontally.

2. A crystallization system for the production of glyphosate technical according to claim 1, characterized in that: The filter mesh diameters of the filter plates (2) are different, and the filter mesh diameters of the filter plates (2) closer to the liquid inlet (101) increase in sequence.

3. A crystallization system for the production of glyphosate technical according to claim 1, characterized in that: The driving mechanism (3) is a scissor-type structure, comprising a plurality of scissor-type arms (301) arranged crosswise with each other, the middle positions of adjacent scissor-type arms (301) being rotationally connected via a middle movable pin shaft (302), the two ends of adjacent scissor-type arms (301) being rotationally connected via a side movable pin shaft (303), and the two scissor-type arms (301) at one end close to the liquid inlet (101) being rotationally connected to a middle static pin shaft (304), and the middle static pin shaft (304) being fixed to the top end of the filter box (1).

4. A crystallization system for the production of glyphosate technical according to claim 3, characterized in that: A first magnetic suction cup (309) is installed on the side of the middle moving pin shaft (302) close to the filter box (1), and a second magnetic suction cup (201) is fixed on both sides of the filter plate (2). The second magnetic suction cup (201) is exactly aligned with the first magnetic suction cup (309), and the second magnetic suction cup (201) and the first magnetic suction cup (309) are attracted to each other through the side wall of the filter box (1) and remain relatively still.

5. A crystallization system for the production of glyphosate technical according to claim 4, characterized in that: A first driving rod (307) is connected to one of the scissor arms (301), a first gripping rod (308) is fixedly connected between the first driving rods (307) on both sides, and the driving mechanism (3) is installed inside the protective housing (105).

6. A crystallization system for the production of glyphosate technical according to claim, characterized in that: The number of the filter plates (2) is two to four, and the multiple filter plates (2) are parallel to each other.

7. A crystallization system for the production of glyphosate technical according to claim 4, characterized in that: A guide rail (306) is fixed on the outer side wall of the filter box (1), and the middle movable pin shaft (302) is slidably mounted on the guide rail (306) via a first sliding block (305).

8. A crystallization system for the production of glyphosate technical according to claim 4, characterized in that: Support shafts (401) are fixed on both sides of the top of the filter box (1), a V-shaped connecting rod (402) is rotatably mounted on the top of the support shaft (401), a horizontal slide rail (403) is provided between the two V-shaped connecting rods (402), the horizontal slide rail (403) is rotatably connected to one of the branches of the V-shaped connecting rod (402), the middle movable pin shaft (302) is hollow inside, and a vertical shaft (4) is rotatably mounted inside the middle movable pin shaft (302), and one end of the vertical shaft (4) is fixedly connected to the first magnetic suction cup (309).

9. A crystallization system for the production of glyphosate technical according to claim 8, characterized in that: A straight connecting rod (405) is fixed to the other end of the vertical axis (4), and one end of the straight connecting rod (405) away from the vertical axis (4) is rotatably connected to a second sliding block (406), and the second sliding block (406) is slidably mounted on the horizontal sliding rail (403).

10. A crystallization system for the production of glyphosate technical according to claim 9, characterized in that: The plurality of straight connecting rods (405) are parallel to each other, and a second gripping rod (404) is connected to a branch of the V-shaped connecting rod (402) close to the liquid inlet (101) and away from the horizontal slide rail (403).

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