Chelate preparation equipment

Abstract

The invention belongs to the technical field of amino acid and metal salt chelation, and particularly relates to chelate preparation equipment which comprises a tank body, a stirring shaft and a stirring paddle are arranged in the tank body, an upper liquid guide pipe opening and a lower liquid guide pipe opening are formed in the upper portion and the lower portion of the stirring shaft respectively, and when the stirring shaft rotates in the first direction, the stirring paddle rotates in the second direction. The upper liquid guide pipe opening and the lower liquid guide pipe opening face the liquid facing direction, a first liquid guide pipe communicated with the upper liquid guide pipe opening and a second liquid guide pipe communicated with the lower liquid guide pipe opening are arranged on the stirring shaft and the stirring paddle, in the initial stage of the reaction, the mixing effect can be achieved, flocculent precipitates cannot be affected, in the middle stage of the reaction, the reaction time is shortened, and the reaction efficiency is improved. The stirring shaft is directly driven to rotate reversely, the effect of filtering out precipitates can be achieved, cooperation can be conducted in the whole chelation reaction process through combination of the stirring shaft and the precipitates, and therefore the reaction efficiency is improved, and the purity of a final product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of amino acid and metal salt chelation, in particular to a chelate preparation device. Background Art

[0002] In the chelation reaction, during the reaction of amino acids and metal salts, during the initial mixing, on the one hand, the density difference between the two solutions is large, which easily leads to uneven density mixing during the stirring process. On the other hand, the flocculent precipitate produced settles downward, affecting the dissolution efficiency of the precipitate after subsequent pH adjustment. In the later stage of the reaction, when the metal salt ions are excessive, precipitates will be produced again, which needs to be removed to ensure the purity of the final product. Therefore, there is an urgent need for a chelate preparation equipment that can solve the problem of rapid and uniform initial reaction and precipitate filtration in the later reaction stage during the chelation process of amino acids and metal salts. Summary of the Invention

[0003] The present invention provides a chelate preparation device, which aims to improve the mixing efficiency in the initial reaction process, and evenly distribute the flocculent precipitate in the initial reaction to improve the reaction efficiency, and filter out the precipitate caused by excess to improve the product purity.

[0004] The present invention provides the following technical solution: a chelate preparation device, comprising a tank body, a stirring shaft and a stirring paddle provided in the tank body, an upper liquid guide pipe opening and a lower liquid guide pipe opening provided at the upper and lower parts of the stirring shaft, respectively; when the stirring shaft rotates in a first direction, the upper and lower liquid guide pipe openings face the direction of the liquid; a liquid guide pipe connected to the upper liquid guide pipe opening and two liquid guide pipes connected to the lower liquid guide pipe opening are provided on the stirring shaft and the stirring paddle; a liquid outlet connected to the one liquid guide pipe and two liquid outlets connected to the two liquid guide pipes are provided on the stirring paddle.

[0005] In a possible implementation manner, the one liquid outlet corresponds to the two liquid outlets one-to-one, and the outlet directions are staggered.

[0006] In a possible embodiment, a filter port is provided at the lower portion of the stirring shaft and three liquid outlets are provided at the upper portion. When the stirring shaft rotates in the second direction, the filter port faces the direction of the liquid. A filter cavity and a filter tube are provided in the stirring shaft. The filter cavity is connected to the filter port through the lower portion of the filter tube and the upper portion is connected to the three liquid outlets. A filter screen is provided in the filter cavity.

[0007] In a possible embodiment, the filter chamber is located at the lower part of the stirring shaft, and a through opening is provided at the lower part, and a collecting bottle is detachably mounted at the through opening.

[0008] In a possible embodiment, a backwash port is provided on the upper portion of the stirring shaft. When the stirring shaft rotates in the second direction, the backwash port faces the direction of the liquid. A backwash pipe is provided in the stirring shaft. The upper end of the backwash pipe is connected to the backwash port, and the lower end is connected to the upper portion of the filter chamber. The filter chamber is provided with a switch assembly for intermittently opening and closing the filter tube, the backwash tube and the mouth of the collecting bottle, and the body of the collecting bottle is provided with filter holes.

[0009] In a possible embodiment, the switch assembly includes a sliding member arranged in the filter chamber and a driving member for driving the sliding member to switch positions, and the sliding member is provided with a bottle mouth seal, a lower seal, and an upper seal. When the sliding member is in the first position, the bottle mouth seal seals the bottle mouth, the lower seal is located above the filter tube's lower connecting port in the filter chamber, the upper seal seals the backwash pipe, and the filter tube is in an open state. When the sliding member is in the second position, the bottle mouth seal extends into the collecting bottle, the lower seal seals the filter tube's lower connecting port in the filter chamber, the upper seal seals the filter tube's upper connecting port in the filter chamber, and the collecting bottle mouth and the backwash pipe are in an open state.

[0010] In one possible embodiment, the driving member includes a one-way rotating member slidingly arranged on the stirring shaft, the stirring shaft outer shell is provided with a driving ring mounted on the tank body, the side of the one-way rotating member is provided with a shift rod, the shift rod is pressed on the driving ring, the driving ring is provided with annular surfaces arranged at different heights, and a smooth transition surface is provided between the low annular surface and the high annular surface, the main rod body of the sliding member extends upward into the sliding hole in the middle of the stirring shaft, the stirring shaft is provided with a transverse sliding hole on the upper part of the one-way rotating member, and the side of the main rod body is provided with a holding rod that passes through the transverse sliding hole and is pressed on the surface of the one-way rotating member.

[0011] In a possible implementation manner, the first liquid guiding tube, the second liquid guiding tube, the filter tube, and the backwashing tube are arranged to avoid each other.

[0012] In a possible implementation manner, the filter hole is arranged close to the filter port.

[0013] It should be understood that the present invention enables the upper liquid and the lower liquid to offset each other, further improving the mixing efficiency. If the density of the liquids involved in chelation is greatly different, they are prone to stratification when not fully mixed. The above design can avoid stratification during the mixing process of liquids of different densities, and the top liquid and the lower liquid can be mixed quickly.

[0014] In the initial stage of the reaction, it can play a mixing role without affecting the flocculent precipitation. In the middle stage of the reaction, it can filter out the precipitate by directly driving the stirring shaft to rotate in the opposite direction. Through the combination of the two, it can cooperate in the entire process of the chelation reaction, thereby improving the reaction efficiency and improving the purity of the final product.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0017] Figure 1 A schematic diagram of the overall structure of a chelate preparation device provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a stirring shaft and a stirring paddle of a chelate preparation device provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the enlarged structure of the drive ring of a chelate preparation device provided by an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the exploded structure of a one-way rotating part of a chelate preparation device provided by an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of a partial cross-section of a stirring shaft and a stirring paddle of a chelate preparation device provided in an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of part A in the middle;

[0023] Figure 7 for Figure 5 A magnified schematic diagram of part B in the middle;

[0024] Figure 8 This is a structural schematic diagram of a chelate preparation device provided by an embodiment of the present invention when a sliding member is in a lower limit position.

[0025] Reference numerals:

[0026] 1. Controller; 2. Drive motor; 3. Gear reducer; 4. Frame; 5. Feed port; 6. Tank; 7. Jacket; 8. Stirring shaft; 9. Material outlet; 10. Drive ring; 101. Low annular surface; 102. High annular surface; 103. Smooth transition surface; 11. One-way rotating part; 1101. Cover; 1102. Fixed ring; 1103. Sleeve; 1104. Ratchet; 1105. Ratchet ring; 1106. Lower shell; 1107. Paddle; 12. Stirring paddle ;13. Collecting bottle;14. Horizontal sliding hole;15. Holding rod;16. One liquid guide tube;17. Two liquid guide tubes;18. One liquid outlet;19. Two liquid outlets;20. Upper liquid guide tube outlet;21. Backwash outlet;22. Filter tube;23. Upper plate;24. Bottle mouth seal;25. Backwash tube;26. Extension section;27. Lower plate;28. Lower liquid guide tube outlet;29. Filter outlet;30. Main rod body;31. Upper seal;32. Filter screen;33. Lower seal. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] In order to better understand the purpose, function and specific design scheme of the present invention, the full-automatic wire crimping machine of the present invention is further described in detail below with reference to the accompanying drawings.

[0033] Reference Figures 1-8 As shown, a chelate preparation device includes a tank body 6, in which a stirring shaft 8 and a stirring paddle 12 are provided. The upper and lower parts of the stirring shaft 8 are respectively provided with an upper liquid guide pipe port 20 and a lower liquid guide pipe port 28. When the stirring shaft 8 rotates in a first direction, the upper liquid guide pipe port 20 and the lower liquid guide pipe port 28 face the liquid-facing direction (the direction consistent with the rotation direction of the stirring shaft 8 is the liquid-facing direction. Obviously, the consistency here does not need to be completely consistent, and there may be an angle). The stirring shaft 8 and the stirring paddle 12 are provided with a liquid guide pipe 16 connected to the upper liquid guide pipe port 20 and two liquid guide pipes 17 connected to the lower liquid guide pipe port 28. The stirring paddle 12 is provided with a liquid outlet 18 connected to the one liquid guide pipe 16 and two liquid outlets 19 connected to the two liquid guide pipes 17. The one liquid outlet 18 corresponds to the two liquid outlets 19 one by one, and the outlet directions are staggered.

[0034] In this embodiment, the tank 6 that can be selected in the chelation reaction is various, such as an open tank, a closed tank, a reactor, a mixing tank, etc. Specifically, Figure 1 As shown, in this embodiment, in order to improve the reaction efficiency, the reaction temperature needs to be controlled, so a reactor is selected as the tank 6, as shown in FIG. Figure 1As shown, a material outlet 9 is provided at the lower part of the tank body 6, and an electric valve is provided at the material outlet 9 for controlling opening and closing. A jacket 7 with a spiral plate is provided on the outside of the tank body 6, and the jacket 7 is provided with a water inlet and a drain pipe. A feed port 5 is provided at the upper part of the tank body 6, and a sealing door is provided at the feed port 5. A frame 4 is provided on the top of the tank body 6, and a drive motor 2 is installed on the top of the frame 4. The drive motor 2 is electrically connected to the controller 1, and the output shaft of the drive motor 2 is connected to the gear reducer 3. After the speed of the drive motor 2 is adjusted by the gear reducer 3, it is connected to the stirring shaft 8 through a coupling, and a mechanical seal is provided between the stirring shaft 8 and the tank body 6.

[0035] In this embodiment, if Figure 2 As shown, an upper disk body 23 and a lower disk body 27 are respectively provided at the upper and lower parts of the stirring shaft 8, wherein the upper liquid guide pipe opening 20 and the lower liquid guide pipe opening 28 are respectively provided on the upper side of the upper disk body 23 and the lower side of the lower disk body 27. Correspondingly, the first liquid guide pipe 16, the second liquid guide pipe 17, the filter pipe 22, and the backwash pipe 25 also extend into the upper disk body 23 and the lower disk body 27.

[0036] In summary, when the stirring shaft 8 rotates in the first direction (clockwise), the upper liquid guide pipe opening 20 and the lower liquid guide pipe opening 28 face the direction of the liquid, so the upper liquid will enter the first liquid guide pipe 16 from the upper liquid guide pipe opening 20, and the lower liquid will enter the second liquid guide pipe 17 from the lower liquid guide pipe opening 28, and finally the liquid in the first liquid guide pipe 16 will be discharged from the first liquid outlet 18, and the liquid in the second liquid guide pipe 17 will be discharged from the second liquid outlet 19, so that the rotation of the stirring shaft 8 in the first direction can drive the stirring paddle 12 to stir, and at the same time, the upper liquid guide pipe opening 20 and the lower liquid will enter the second liquid guide pipe 17 from the lower liquid guide pipe opening 28. The liquid pipe port 20, the lower liquid guide pipe port 28, the first liquid guide pipe 16 and the second liquid guide pipe 17 allow the upper and lower liquids to be mixed quickly. By corresponding the first liquid outlet 18 and the second liquid outlet 19 one by one and staggering the outlet directions, the upper liquid and the lower liquid can offset each other, further improving the mixing efficiency. If the liquids involved in chelation (such as amino acid solution and metal salt solution) have a large density difference and are prone to stratification when not fully mixed, the above design can avoid stratification during the mixing process of liquids with different densities, and the top liquid and the lower liquid can be mixed quickly.

[0037] Moreover, during the initial mixing process, such as the initial mixing of the zinc salt and the amino acid solution, if the pH is not adjusted (acidic or neutral conditions), a white flocculent precipitate will quickly appear in the solution. At this time, the above-mentioned structure can quickly bring the precipitate at the bottom to the upper part, so that the flocculent precipitate will not be deposited at the bottom of the tank 6. The pH is then adjusted. When the pH rises to 8-10, the precipitate begins to gradually dissolve, and the solution changes from turbid to clear and transparent. Since the flocculent precipitate does not accumulate at the bottom of the tank 6, the uniform dispersion of the flocculent precipitate can enable the zinc ions to fully contact with the ligand, shortening the time period of dissolution and reaction.

[0038] Preferably, the stirring shaft 8 is provided with a filter port 29 at the lower part and three liquid outlets at the upper part. When the stirring shaft 8 rotates in the second direction (counterclockwise), the filter port 29 faces the direction of the liquid. A filter cavity and a filter tube 22 are provided in the stirring shaft 8. The filter cavity is connected with the filter port 29 through the lower part of the filter tube 22 and the upper part is connected with the three liquid outlets. A filter screen 32 is provided in the filter cavity. The filter cavity is located at the lower part of the stirring shaft 8, and a through-port is provided at the lower part. A collecting bottle 13 is detachably installed at the through-port. When the stirring shaft 8 rotates in the second direction, since the filter port 29 faces the direction of the liquid, the liquid at the lower part will flow from the filter port 29 into the filter tube 22 The precipitate is filtered out by the filter screen 32 when the liquid passes through the filter screen 32, and the filtrate after filtration is discharged from the three liquid outlets at the upper part along the filter tube 22 at the upper part of the filter chamber. On the one hand, the liquid at the lower part can be diverted to the upper part for discharge, and on the other hand, the precipitate can be filtered, thereby preventing the precipitate from affecting the purity of subsequent products. Obviously, the three liquid outlets are mainly used for discharging the filtrate after filtration, and can be set at any position on the stirring shaft 8 that does not affect the liquid inlet of the filter port 29. In order to improve the mixing effect, the three liquid outlets are set at the upper part, so that the filtrate entering from the lower part is finally discharged from the upper part. Specifically, in this embodiment, the three liquid outlets are set on the side wall of the upper disk body 23.

[0039] In summary, taking amino acid chelated zinc as an example, when the zinc salt is excessive, when the pH rises to 8-10, when the zinc ion concentration exceeds the coordination capacity of the amino acid, the excess zinc ions will hydrolyze under alkaline conditions to produce zinc hydroxide precipitates. In order to increase the purity of the subsequent concentrated crystals, the zinc hydroxide needs to be filtered out. Through the above scheme, in the initial stage of the reaction, it can play a mixing role without affecting the flocculent precipitate. In the middle stage of the reaction, the stirring shaft 8 is directly driven to rotate in the opposite direction, which can filter out the precipitate. By combining the two, they can cooperate in the entire process of the chelation reaction, thereby improving the reaction efficiency and improving the purity of the final product.

[0040] Preferably, a backwash port 21 is provided on the upper part of the stirring shaft 8. When the stirring shaft 8 rotates in the second direction, the backwash port 21 faces the liquid-facing direction. A backwash pipe 25 is provided in the stirring shaft 8. The upper end of the backwash pipe 25 is connected to the backwash port 21, and the lower end is connected to the upper part of the filter chamber. The filter chamber is provided with a switch assembly for intermittently opening and closing the filter tube 22, the backwash pipe 25 and the bottle mouth of the collecting bottle 13. The bottle body of the collecting bottle 13 is provided with filter holes. In this embodiment, the filter chamber is provided as a circular cavity, the lower part of the circular cavity is connected to the lower part of the stirring shaft 8, and an internal thread is provided at the lower end of the circular cavity, so that the collecting bottle 13 can be conveniently disassembled and assembled.

[0041] In this embodiment, the switch assembly includes a sliding member arranged in the filter cavity and a driving member for driving the sliding member to switch positions. The sliding member is provided with a bottle mouth seal 24, a lower seal 33, and an upper seal 31. When the sliding member is in the first position, the bottle mouth seal 24 seals the bottle mouth, the lower seal 33 is located above the communication port of the filter tube 22 at the lower part of the filter cavity, the upper seal 31 seals the backwash pipe 25, and the filter tube 22 is in an open state. When the sliding member is in the second position, the bottle mouth seal 24 extends into the collecting bottle 13, the lower seal 33 seals the communication port of the filter tube 22 at the lower part of the filter cavity, the upper seal 31 seals the communication port of the filter tube 22 at the upper part of the filter cavity, and the bottle mouth of the collecting bottle 13 and the backwash pipe 25 are in an open state.

[0042] In summary, when the sliding member is in the first position, that is, in the upper limit position, the bottle mouth sealing member 24 seals the bottle mouth, the lower sealing member 33 seals the communication port of the backwash pipe 25 in the filter chamber, the filter tube 22 is in communication with the filter chamber and the filter port 29, and during the rotation of the stirring shaft 8, the mixed liquid containing sediment at the lower part enters the lower space of the filter chamber from the filter port 29, and the sediment is filtered out after passing through the filter screen 32, and the filtrate flows upward from the filter tube 22 at the upper part of the filter chamber and is finally discharged from the three liquid outlets; when the sliding member is in the first position, that is, in the upper limit position, the bottle mouth sealing member 24 seals the bottle mouth, the lower sealing member 33 seals the communication port of the backwash pipe 25 in the filter chamber, and the filter tube 22 is in communication with the filter chamber and the filter port 29, and during the rotation of the stirring shaft 8, the mixed liquid containing sediment at the lower part enters the lower space of the filter chamber from the filter port 29, and the sediment is filtered out after passing through the filter screen 32, and the filtrate flows upward from the filter tube 22 at the upper part of the filter chamber and is finally discharged from the three liquid outlets; When the moving part is in the second position, that is, the lower limit position, the upper seal 31 seals the communication port of the filter tube 22 at the upper part of the filter chamber, and the lower seal 33 seals the communication port of the filter tube 22 at the lower part of the filter chamber. The bottle mouth seal 24 extends into the collecting bottle 13. When the stirring shaft 8 rotates, the upper clear liquid flows from the backwash port 21 through the backwash pipe 25 into the filter chamber to flush the filter screen 32, and the washed-down filter residue flows into the collecting bottle 13 with the liquid flow from the gap between the bottle mouth seal 24 and the body of the collecting bottle 13.

[0043] In this embodiment, in order to perform alternating filtration and backwashing through the different heights of the sliding member, the connecting port of the filter tube 22 at the upper part of the filter chamber and the connecting port of the backwash tube 25 in the filter chamber are at different heights, and the spacing is adapted to the displacement of the sliding member and the height difference of the high and low annular surfaces 101 of the drive ring 10.

[0044] Specifically, in the present invention, the sliding member includes a main rod body 30 in the middle, and a bottle mouth seal 24, an upper seal 31, and a lower seal 33 are installed on the main rod body 30 from bottom to top in sequence, wherein the bottle mouth seal 24 is configured as a circular sealing plate, and the size of the circular sealing plate is adapted to the bottle mouth of the collecting bottle 13. In order to enable the filter cavity to be connected with the collecting bottle 13 when the circular sealing plate moves downward, the size of the bottle body of the collecting bottle 13 is larger than the size of the bottle mouth of the collecting bottle 13, so that when the sliding member is in the second position, the circular sealing plate can extend into the bottle body of the collecting bottle 13, and a distance is left between the circular sealing plate and the bottle body of the collecting bottle 13.

[0045] Specifically, in the present invention, the upper seal 31 and the lower seal 33 include a connector connected to the main rod body 30, and a sealing plate whose end is in contact with the inner wall of the filter chamber. Obviously, the sealing structure is diverse. In this embodiment, a sealing ring is selected as the sealing plate, and the inner wall of the sealing ring is connected to the connecting ring in the middle through a connecting rod, and the connecting ring is fixed on the main rod body 30, and the sealing ring is set in contact with the inner wall of the filter chamber.

[0046] In this embodiment, the driving member includes a one-way rotating member 11 slidingly arranged on the stirring shaft 8, and the stirring shaft 8 is outer-mounted with a driving ring 10 installed on the tank body 6. The side of the one-way rotating member 11 is provided with a shift rod 1107, and the shift rod 1107 is always pressed on the driving ring 10 under the action of gravity. The driving ring 10 is provided with annular surfaces arranged at different heights, and a smooth transition surface 103 is provided from the low annular surface 101 to the high annular surface 102. The main rod body 30 of the sliding member extends upward into the sliding hole in the middle of the stirring shaft 8 to form an extension section 26. The stirring shaft 8 is provided with a transverse sliding hole 14 on the upper part of the one-way rotating member 11, and the side of the extension section 26 is provided with a holding rod 15 that passes through the transverse sliding hole 14 and presses on the surface of the one-way rotating member 11.

[0047] Specifically, the one-way rotating member 11 can be a one-way bearing or other one-way rotating structure. In this embodiment, the one-way rotating member 11 includes a lower shell 1106 slidably arranged on the stirring shaft 8, a ratchet ring 1105 is arranged on the inner wall of the lower shell 1106, a fixing ring 1102 is fixed on the stirring shaft 8, and a retractable ratchet 1104 mechanism facing the ratchet ring 1105 is arranged on the side wall of the fixing ring 1102. A cover body 1101 is fixed on the top of the lower shell 1106, and the ratchet ring 1105 has sufficient thickness in the vertical direction, and the thickness is greater than the height difference between the high and low ring surfaces 101 of the drive ring 10, so that when the lever 1107 moves along the surface of the drive ring 10, it drives the one-way rotating member 11 to move vertically along the stirring shaft 8, and during the movement, the lower shell 1106 and the cover body 1101 will not contact the fixing ring 1102.

[0048] Furthermore, the retractable ratchet 1104 mechanism includes a sleeve 1103 fixed on the fixed ring 1102, the ratchet 1104 is slidably installed in the sleeve 1103, a spring is arranged between the ratchet 1104 and the bottom wall of the sleeve 1103, and the ratchet 1104 has a tendency to move outward under the action of the spring force.

[0049] Furthermore, in order to improve stability, the retractable ratchet 1104 mechanism is evenly arranged on the side wall of the fixed ring 1102. Specifically, in this embodiment, there are two retractable ratchet 1104 mechanisms, and the two retractable ratchet 1104 mechanisms are arranged at 180 degrees on both sides of the fixed ring 1102.

[0050] Obviously, the driving member can choose other alternative structures, such as an additional power source. The above example is only a preferred method in the present invention. Through a simple structure, there is no need to set up an additional power source. On the one hand, it can achieve the functions of alternating filtration and backwashing. On the other hand, there is no need to consider the layout, sealing and other issues of the additional power source.

[0051] Preferably, the first liquid guide tube 16, the second liquid guide tube 17, the filter tube 22, and the backwash tube 25 are arranged to avoid each other. In this embodiment, two groups of the first liquid guide tube 16 and the second liquid guide tube 17 are provided, which are respectively arranged on both sides of the stirring paddle 12, and two groups of the filter tube 22 and the backwash tube 25 are provided, which are respectively arranged on both sides of the stirring paddle 12 at 90 degrees. Obviously, the above embodiment is only a preferred method in the present invention. In the actual production process, the above number can be adjusted according to the number of stirring paddles 12 and the actual usage scenario.

[0052] Preferably, the filter hole is arranged close to the filter port 29. In summary, since the filtration process and the backwash process are performed alternately, during the backwash process, there is no sediment in the upper liquid, and the upper liquid flushes the filter screen 32 from top to bottom. The washed sediment is discharged to the filter hole on the side wall of the collecting bottle 13 along with the liquid flow, and the sediment is pressed at the filter hole. When the filtration process is alternated, the filter port 29 will suck in the lower liquid flow, and the liquid flow will flush the outer wall of the collecting bottle 13, thereby flushing the filter hole from the outside to the inside, avoiding clogging of the filter hole on the side wall of the collecting bottle 13.

[0053] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. The embodiments of the present invention and the features therein can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A chelate preparation device, comprising a tank (6), wherein a stirring shaft (8) and a stirring paddle (12) are provided in the tank (6), characterized in that: The upper and lower parts of the stirring shaft (8) are respectively provided with an upper liquid guide pipe opening (20) and a lower liquid guide pipe opening (28); when the stirring shaft (8) rotates in a first direction, the upper liquid guide pipe opening (20) and the lower liquid guide pipe opening (28) face the direction of the liquid; the stirring shaft (8) and the stirring paddle (12) are provided with a liquid guide pipe (16) in communication with the upper liquid guide pipe opening (20) and two liquid guide pipes (17) in communication with the lower liquid guide pipe opening (28); and the stirring paddle (12) is provided with a liquid outlet (18) in communication with the one liquid guide pipe (16) and two liquid outlets (19) in communication with the two liquid guide pipes (17).

2. A chelate preparation device according to claim 1, characterized in that, The one liquid outlet (18) corresponds to the two liquid outlets (19) one by one, and the outlet directions are staggered.

3. A chelate preparation device according to claim 1, characterized in that, The stirring shaft (8) is provided with a filter port (29) at the lower portion and three liquid outlets at the upper portion. When the stirring shaft (8) rotates in the second direction, the filter port (29) faces the direction of the liquid. A filter cavity and a filter tube (22) are provided in the stirring shaft (8). The filter cavity is connected to the filter port (29) through the lower portion of the filter tube (22) and is connected to the three liquid outlets through the upper portion. A filter screen is provided in the filter cavity.

4. A chelate preparation device according to claim 3, characterized in that, The filter chamber is located at the lower part of the stirring shaft (8), and a through-hole is provided at the lower part, and a collecting bottle (13) is detachably installed at the through-hole.

5. A chelate preparation device according to claim 4, characterized in that, A backwash port (21) is provided on the upper portion of the stirring shaft (8). When the stirring shaft (8) rotates in the second direction, the backwash port (21) faces the direction of the liquid. A backwash pipe (25) is provided in the stirring shaft (8). The upper end of the backwash pipe (25) is connected to the backwash port (21), and the lower end is connected to the upper portion of the filter chamber. The filter chamber is provided with a switch assembly for intermittently opening and closing the filter pipe (22), the backwash pipe (25), and the mouth of the collecting bottle (13). The body of the collecting bottle (13) is provided with a filter hole.

6. A chelate preparation device according to claim 5, characterized in that: The switch assembly comprises a sliding member arranged in the filter cavity and a driving member for driving the sliding member to switch positions. The sliding member is provided with a bottle mouth sealing member (24), a lower sealing member (33), and an upper sealing member (31). When the sliding member is in a first position, the bottle mouth sealing member (24) seals the bottle mouth, the lower sealing member (33) is located above the communication port of the filter tube (22) at the lower part of the filter cavity, the upper sealing member (31) seals the backwashing pipe (25), and the filter tube (22) is in an open state. When the sliding member is in a second position, the bottle mouth sealing member (24) extends into the collecting bottle (13), the lower sealing member (33) seals the communication port of the filter tube (22) at the lower part of the filter cavity, the upper sealing member (31) seals the communication port of the filter tube (22) at the upper part of the filter cavity, and the bottle mouth of the collecting bottle (13) and the backwashing pipe (25) are in an open state.

7. A chelate preparation device according to claim 6, characterized in that: The driving member comprises a one-way rotating member (11) slidingly arranged on the stirring shaft (8); the stirring shaft (8) is provided with a driving ring (10) mounted on the tank body (6); a shifting rod (1107) is provided on the side of the one-way rotating member (11); the shifting rod (1107) is pressed on the driving ring (10); the driving ring (10) is provided with annular surfaces arranged in different heights; a smooth transition surface (103) is provided from the low annular surface (101) to the high annular surface (102); the main rod body (30) of the sliding member extends upward into the sliding hole in the middle of the stirring shaft (8); the stirring shaft (8) is provided with a transverse sliding hole (14) on the upper part of the one-way rotating member (11); and a holding rod (15) is provided on the side of the main rod body (30) and passes through the transverse sliding hole (14) and is pressed on the surface of the one-way rotating member (11).

8. The chelate preparation device according to claim 7, characterized in that: The first liquid guiding pipe (16), the second liquid guiding pipe (17), the filter pipe (22), and the backwash pipe (25) are arranged to avoid each other.

9. The chelate preparation device according to claim 5, characterized in that: The filter hole is arranged close to the filter port (29).

Images