Impurity filtering device for producing dibromohydantoin

Abstract

The utility model provides an impurity filtering device for producing dibromohydantoin. The impurity filtering device comprises an outer barrel body, a centrifugal filtering barrel, a stirring device and a transmission structure, the motor is fixedly mounted above the outer barrel body; the output end of the motor is fixedly connected with a gear through a first connecting rod; a belt is arranged in the middle of the first connecting rod; the middle part of a second connecting rod is connected with a belt, and a motor drives fan blades to rotate to stir a mixed solution; the outer toothed ring is fixedly mounted on the outer side of the barrel body of the centrifugal filter barrel; the gear is meshed with the outer gear ring; the stirring barrel body is fixedly connected to the centrifugal filter barrel upper cover, the bottom of the stirring barrel body is fixedly connected with a base, and the base extends inwards to form a baffle; the rotating direction of the baffle is opposite to the rotating direction of the fan blade, and the upper surface of the baffle is lower than the lower surface of the fan blade, so that the dibromohydantoin solution and the organic solvent are stirred in the stirring device in the positive and negative directions, and are fully and uniformly mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of dibromohydantoin production, in particular to an impurity filtering device used for producing dibromohydantoin. Background Art

[0002] Dibromohydantoin is a derivative of hydantoin. It is a white or light yellow crystalline powder under normal conditions. It is slightly soluble in water and soluble in organic solvents such as benzene, chloroform, and ethanol. It is stable when dry and has a slight pungent odor.

[0003] Dibromohydantoin is an important chemical product, which is used in the chemical, pharmaceutical and agricultural industries. It has the characteristics of high stability, low odor, strong bactericidal effect, slow release, and long-lasting effectiveness. In agriculture, dibromohydantoin is mainly used in aquaculture, including pond disinfection, prevention of water disinfection, disease treatment, etc., and it is not affected by water quality, salinity, pH value, water temperature, organic matter, etc. during use. In addition, dibromohydantoin has been used as a high-efficiency and low-toxic disinfectant, mixed with monoglyceride of stearic acid and Tween-80, and applied to the surface of navel oranges to prevent mold and preserve freshness, which has achieved good results. It is expected that this preservative can also be used for the storage and preservation of other fruits and vegetables.

[0004] Therefore, with the continuous development of chemical, pharmaceutical and other industries and the continuous improvement of people's living standards, the application scope and demand of dibromohydantoin will increase greatly.

[0005] After searching, the Chinese invention patent with application number "CN202210370330.4" discloses a clean synthesis method of dibromohydantoin, which includes the following steps: S1: adding 5,5-dimethylhydantoin, caustic soda, and sodium bromide to a reaction container and dissolving them in water to obtain 5,5-dimethylhydantoin sodium salt; S2: continuously dripping bromine into the reaction container through a circulation pipe connected to the inlet and outlet of the reaction container; S3: dripping hydrogen peroxide and hydrochloric acid into the circulation pipe, and the hydrogen peroxide, hydrochloric acid and sodium bromide react to obtain bromine; S4: reacting When the pH value of the solution in the container reaches 4-6, stop adding hydrogen peroxide and hydrochloric acid to the circulation pipe; S5: heat the reaction container to 10-15°C and continue the reaction for 2-4 hours; S6: centrifuge and filter the dibromohydantoin and the solution to obtain dibromohydantoin wet material, and dry the wet material to obtain a white dibromohydantoin finished product. Under the premise of not using a chlorination process, all parts of the materials can fully react during the reaction process, the synthesis reactor is an alkaline environment, the circulation pipe is an acidic environment, and the cyclic reaction can obtain dibromohydantoin with higher purity.

[0006] In the above-mentioned clean synthesis method of dibromohydantoin, dibromohydantoin and its solution are centrifugally filtered to obtain dibromohydantoin wet material. Since dibromohydantoin is slightly soluble in water and soluble in organic solvents such as benzene, chloroform, and ethanol, common centrifugal filtration devices are not suitable for the preparation and production of dibromohydantoin. It is imperative to improve common impurity filtration devices.

[0007] In summary, there is an urgent need for an impurity filtering device for producing dibromohydantoin to solve the above problems. Utility Model Content

[0008] In order to make up for the above shortcomings, the utility model provides an impurity filtering device for producing dibromohydantoin.

[0009] The utility model is achieved in this way:

[0010] An impurity filtering device for producing dibromohydantoin comprises an outer barrel body, a centrifugal filter barrel, a stirring device and a transmission structure; the transmission structure is fixedly mounted on the upper surface of the outer barrel body; the centrifugal filter barrel is arranged inside the outer barrel body, and a filtering layer is arranged on the barrel wall of the centrifugal filter barrel; the stirring device is arranged above the centrifugal filter barrel and is fixedly connected to the upper cover of the centrifugal filter barrel; the transmission structure is arranged on one side of the centrifugal filter barrel to drive the centrifugal filter barrel to rotate.

[0011] A first feed pipe and a second feed pipe are arranged above the stirring device, the first feed pipe conveys dibromohydantoin solution inwardly, and the second feed pipe conveys organic solvent inwardly; the stirring device comprises fan blades, a baffle, a base, a second connecting rod and a stirring barrel body; the first feed pipe and the second feed pipe enter the stirring device through the upper surface of the top of the outer barrel body; a second connecting rod is arranged at the center of the stirring device, one end of the second connecting rod is rotatably connected to the inner wall of the top of the outer barrel body, and the other end is equipped with fan blades extending into the stirring barrel body; the middle part of the second connecting rod is connected to the transmission structure, and the transmission structure drives the fan blades to rotate to stir the mixed solution; the stirring barrel body is fixedly connected to the upper cover of the centrifugal filter barrel, and a base is fixedly connected to the bottom thereof, and a baffle is extended inwardly from the base; an intermittent gap is arranged between the side wall of the stirring barrel body and the base, and a gap is arranged between the base and the inner wall of the upper cover of the centrifugal filter barrel.

[0012] The transmission structure includes gears, belts, an outer gear ring, a first connecting rod and a motor; the motor is fixedly mounted above the outer barrel body; the outer gear ring is fixedly mounted on the outer side of the barrel body of the centrifugal filter barrel; the output end of the motor is fixedly connected to a gear through a first connecting rod; the gear is meshed with the outer gear ring; a groove is provided in the middle of the first connecting rod, and a belt is embedded in the groove; one end of the belt is connected to the first connecting rod, and the other end is connected to the second connecting rod; so that the operation of the motor can simultaneously drive the centrifugal filter barrel, the fan blades and the stirring barrel body to rotate.

[0013] Preferably, a discharge pipe is provided at the bottom of the outer barrel, and a discharge pipe is provided at the bottom of the centrifugal filter barrel.

[0014] Preferably, the upper surface of the baffle is lower than the lower surface of the fan blade.

[0015] Preferably, the upper surface of the fan blade is lower than the gap between the base and the inner wall of the upper cover of the centrifugal filter barrel.

[0016] The beneficial effects of the utility model compared with the prior art are:

[0017] 1. The impurity filtering device for producing dibromohydantoin shown in the utility model comprises a transmission structure including a gear, a belt, an outer gear ring, a first connecting rod and a motor; the motor is fixedly installed above the outer barrel; the output end of the motor is fixedly connected to the gear through the first connecting rod; a groove is provided in the middle of the first connecting rod, and a belt is embedded in the groove; one end of the belt is connected to the first connecting rod, and the other end is connected to the second connecting rod; so that the operation of the motor can simultaneously drive the centrifugal filter barrel, the fan blade and the stirring barrel body to rotate, and the middle part of the second connecting rod is connected to the transmission structure, and the transmission structure drives the fan blade to rotate to stir the mixed solution, and since the second connecting rod is connected to the first connecting rod If the rod is connected by a belt, the rotation direction of the fan blade is the same as that of the first connecting rod; the outer tooth ring is fixedly installed on the outer side of the barrel body of the centrifugal filter barrel; the gear is meshed with the outer tooth ring; since the centrifugal filter barrel and the first connecting rod are connected through the meshing of the outer tooth ring and the gear, the rotation direction of the centrifugal filter barrel is opposite to that of the first connecting rod, and the stirring barrel body is fixedly connected to the upper cover of the centrifugal filter barrel, and a base is fixedly connected to the bottom thereof, and a baffle is extended inwardly from the base; the rotation direction of the baffle is consistent with that of the centrifugal filter barrel and opposite to that of the first connecting rod, and the upper surface of the baffle is set to be lower than the lower surface of the fan blade, so that the dibromohydantoin solution and the organic solvent are stirred in the forward and reverse directions in the stirring device, and the mixing is more sufficient and uniform.

[0018] 2. The impurity filtering device for producing dibromohydantoin shown in the utility model is provided with a first feed pipe and a second feed pipe above the stirring device, the first feed pipe conveys dibromohydantoin solution inwardly, and the second feed pipe conveys organic solvent inwardly; the stirring barrel body is fixedly connected to the upper cover of the centrifugal filter barrel, and a base is fixedly connected to the bottom thereof; an intermittent gap is provided between the side wall of the stirring barrel body and the base, and a gap is provided between the base and the inner wall of the upper cover of the centrifugal filter barrel; when the liquid level of the unmixed material and the organic solvent is higher than the gap between the base and the upper cover of the centrifugal filter barrel, the gravity of the unmixed material and the organic solvent forces the mixed liquid to pass through the gap between the base and the upper cover of the centrifugal filter barrel into the centrifugal filter barrel, and the filtration speed can be controlled by the feed speed; at the same time, the mixed liquid that is about to enter the centrifugal filter barrel for centrifugal filtration must pass through the fan blades and baffles to prevent the unmixed liquid from entering the centrifugal filter barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an impurity filtering device for producing dibromohydantoin according to the utility model;

[0021] Figure 2 This is a front view structural schematic diagram of an impurity filtering device for producing dibromohydantoin according to the utility model;

[0022] Figure 3 for Figure 2 The cross-sectional structure of Figure 1 ;

[0023] Figure 4 for Figure 2 The cross-sectional structure of Figure 2 ;

[0024] Figure 5 The utility model is a schematic diagram of the top view of the impurity filtering device for producing dibromohydantoin.

[0025] In the figure: 1. motor; 2. first feed pipe; 3. second feed pipe; 4. outer barrel; 5. discharge pipe; 6. discharge pipe; 7. first connecting rod; 8. gear; 9. belt; 10. second connecting rod; 11. stirring barrel; 12. outer gear ring; 13. centrifugal filter barrel; 14. fan blade; 15. baffle; 16. base. DETAILED DESCRIPTION

[0026] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position. Example

[0027] See also Figure 1-5 , the utility model provides a technical solution:

[0028] An impurity filtering device for producing dibromohydantoin comprises an outer barrel 4, a centrifugal filter barrel 13, a stirring device and a transmission structure; the transmission structure is fixedly mounted on the upper surface of the outer barrel 4;

[0029] like Figure 3 As shown, the centrifugal filter barrel 13 is arranged inside the outer barrel body 4, and a filter layer is arranged on the barrel wall of the centrifugal filter barrel 13; the transmission structure is arranged on one side of the centrifugal filter barrel 13 to drive the centrifugal filter barrel 13 to rotate; a discharge pipe 5 is arranged at the bottom of the outer barrel body 4, and a discharge pipe 6 is arranged at the bottom of the centrifugal filter barrel 13.

[0030] like Figure 4 As shown, the stirring device is arranged above the centrifugal filter barrel 13 and is fixedly connected to the upper cover of the centrifugal filter barrel 13 .

[0031] like Figure 5 As shown, a first feed pipe 2 and a second feed pipe 3 are arranged above the stirring device, the first feed pipe 2 conveys dibromohydantoin solution inwardly, and the second feed pipe 3 conveys organic solvent inwardly; the first feed pipe 2 and the second feed pipe 3 enter the stirring device through the upper surface of the top of the outer barrel body 4.

[0032] like Figure 4 As shown, a second connecting rod 10 is provided at the center of the stirring device, one end of the second connecting rod 10 is rotatably connected to the inner wall of the top of the outer barrel body 4, and the other end is provided with a fan blade 14 extending into the interior of the stirring barrel body 11; an intermittent gap is provided between the side wall of the stirring barrel body 11 and the base 16, and a gap is provided between the base 16 and the inner wall of the upper cover of the centrifugal filter barrel 13; the upper surface of the fan blade 14 is lower than the gap between the base 16 and the inner wall of the upper cover of the centrifugal filter barrel 13.

[0033] like Figure 4As shown, the transmission structure includes a gear 8, a belt 9, an outer gear ring 12, a first connecting rod 7 and a motor 1; the motor 1 is fixedly mounted above the outer barrel body 4; the outer gear ring 12 is fixedly mounted on the outer side of the barrel body of the centrifugal filter barrel 13; the output end of the motor 1 is fixedly connected to the gear 8 through the first connecting rod 7; the gear 8 is meshed with the outer gear ring 12, the centrifugal filter barrel 13 rotates in the opposite direction to the first connecting rod 7, the stirring barrel body 11 is fixedly connected to the upper cover of the centrifugal filter barrel 13, and a base 16 is fixedly connected to the bottom thereof, and a baffle 15 is extended inwardly from the base 16; the baffle 15 rotates in the same direction as the centrifugal filter barrel 13 The barrel 13 is consistent and rotates in the opposite direction to the first connecting rod 7; a groove is provided in the middle of the first connecting rod 7, and a belt 9 is embedded in the groove; one end of the belt 9 is connected to the first connecting rod 7, and the other end is connected to the second connecting rod 10, and the middle of the second connecting rod 10 is connected to the transmission structure, and the motor 1 drives the fan blade 14 to rotate through the belt 9 to stir the mixed solution, and the rotation direction of the fan blade 14 is the same as that of the first connecting rod 7; the upper surface of the baffle 15 is lower than the lower surface of the fan blade 14; the dibromohydantoin solution and the organic solvent are stirred in forward and reverse directions in the stirring device, and the mixing is more sufficient and uniform.

[0034] It should be noted that the specific installation method, circuit connection method and control method of the second connecting rod 10, the belt 9 and the top inner wall of the outer barrel 4 in the present invention are all conventional designs and are not elaborated in detail in the present invention.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impurity filtering device for producing dibromohydantoin, comprising an outer barrel (4), a centrifugal filter barrel (13), a stirring device and a transmission structure; the transmission structure is fixedly mounted on the upper surface of the outer barrel (4); the centrifugal filter barrel (13) is arranged inside the outer barrel (4), and a filtering layer is arranged on the barrel wall of the centrifugal filter barrel (13); the stirring device is arranged above the centrifugal filter barrel (13) and is fixedly connected to the upper cover of the centrifugal filter barrel (13); Features: The stirring device comprises a fan blade (14), a base (16), a second connecting rod (10) and a stirring barrel body (11); the stirring barrel body (11) is fixedly connected to the upper cover of the centrifugal filter barrel (13), and the bottom of the stirring barrel body (11) is fixedly connected to the base (16); a second connecting rod (10) is arranged at the center of the stirring device, one end of the second connecting rod (10) is rotatably connected to the inner wall of the top of the outer barrel body (4), and the other end is provided with a fan blade (14) extending into the stirring barrel body (11), and the middle part of the second connecting rod (10) is connected to the transmission structure; an intermittent gap is arranged between the side wall of the stirring barrel body (11) and the base (16), and a gap is arranged between the base (16) and the inner wall of the upper cover of the centrifugal filter barrel (13); the upper surface of the fan blade (14) is lower than the gap between the base (16) and the inner wall of the upper cover of the centrifugal filter barrel (13).

2. The impurity filtering device for producing dibromohydantoin according to claim 1, characterized in that: The transmission structure comprises a gear (8), a belt (9), an outer gear ring (12), a first connecting rod (7) and a motor (1); the motor (1) is fixedly mounted above the outer barrel (4); the outer gear ring (12) is fixedly mounted on the outer side of the barrel of the centrifugal filter barrel (13); the output end of the motor (1) is fixedly connected to a gear (8) via the first connecting rod (7); and the gear (8) is meshed with the outer gear ring (12).

3. The impurity filtering device for producing dibromohydantoin according to claim 1, characterized in that: The stirring device further comprises a baffle (15), and the base (16) is provided with a baffle (15) extending inwardly; the upper surface of the baffle (15) is lower than the lower surface of the fan blade (14).

4. The impurity filtering device for producing dibromohydantoin according to claim 2, characterized in that: A groove is provided in the middle of the first connecting rod (7), and a belt (9) is embedded in the groove; one end of the belt (9) is connected to the first connecting rod (7), and the other end is connected to the second connecting rod (10); the motor (1) drives the fan blade (14) to rotate via the belt (9).

5. The impurity filtering device for producing dibromohydantoin according to claim 1, characterized in that: A discharge pipe (5) is provided at the bottom of the outer barrel (4), and a discharge pipe (6) is provided at the bottom of the centrifugal filter barrel (13).

6. The impurity filtering device for producing dibromohydantoin according to claim 1, characterized in that: A first feed pipe (2) and a second feed pipe (3) are arranged above the stirring device. The first feed pipe (2) conveys dibromohydantoin solution inwardly, and the second feed pipe (3) conveys organic solvent inwardly. The first feed pipe (2) and the second feed pipe (3) enter the stirring device through the upper surface of the top of the outer barrel (4).

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