Alkali washing device for hexamethyldisilazane production

Abstract

The utility model discloses an alkali washing device for hexamethyl disilazane production, and relates to the technical field of hexamethyl disilazane. The alkali washing device comprises an alkali washing body, and a driving assembly is rotationally installed in the alkali washing body. According to the device, hexamethyldisilazane and liquid caustic soda can be thrown and mixed again by moving to the rotating stirring assembly, the hexamethyldisilazane and the liquid caustic soda can be better fused, the two pressure pumping assemblies can be driven by the driving assembly to rotate, then negative pressure can be generated at the top end of the material guiding pipe, and therefore the material guiding effect is improved. The material guiding pipe is arranged in the inner cavity of the alkali washing body, so that hexamethyldisilazane precipitated at the bottom of the inner cavity of the alkali washing body is pumped to the top of the inner cavity of the alkali washing body again through the material guiding pipe and reacts with the liquid caustic soda again, hexamethyldisilazane and the liquid caustic soda can be better fused, and the situation that hexamethyldisilazane and the liquid caustic soda cannot make full contact is prevented; and the purity of the separated hexamethyldisilazane is not enough.

Description

Technical Field

[0001] The utility model belongs to the technical field of hexamethyldisilazane, and in particular relates to an alkali washing device for producing hexamethyldisilazane. Background Art

[0002] In the process of producing hexamethyldisilazane by aminolysis of trimethylchlorosilane with ammonia, after the reaction is completed and ammonium chloride is separated from the reaction mixture, the crude hexamethyldisilazane product needs to be further washed with alkali, because hexamethyldisilazane is an organic substance, insoluble in alkaline water, and easily separated from alkaline water.

[0003] In the existing alkali washing device for hexamethyldisilazane production, since hexamethyldisilazane is easily separated from alkaline water, hexamethyldisilazane cannot be fully contacted with liquid alkali, resulting in insufficient purity of the separated hexamethyldisilazane, failure to achieve satisfactory results, and great inconvenience in use.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes an alkali washing device for hexamethyldisilazane production to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses an alkali cleaning device for producing hexamethyldisilazane, comprising an alkali cleaning body, a driving component rotatably mounted inside the alkali cleaning body, a stirring component fixedly mounted at the bottom of the driving component, an upward moving component symmetrically fixedly mounted at the bottom of the driving component, a suction and pressure component symmetrically rotatably mounted at both ends of the driving component, a material introduction pipe is arranged on the top of the suction and pressure component, and the other end of the material introduction pipe is fixedly mounted at the bottom of the inner cavity of the alkali cleaning body.

[0008] Furthermore, the alkali washing body comprises an outer shell, a plurality of supporting legs are fixedly mounted on the bottom of the outer shell, and a feed port is fixedly mounted on the top of the outer shell.

[0009] Furthermore, the driving assembly includes a driving motor, the driving motor is fixedly mounted on the housing, and an output shaft is fixedly mounted on an output end of the driving motor.

[0010] Furthermore, two first synchronous wheels are fixedly mounted on the bottom of the output shaft, and the two first synchronous wheels are rotatably mounted with the pumping and pressing components respectively.

[0011] Furthermore, the upward moving assembly includes a connecting rod, which is fixedly mounted on the bottom of the output shaft, and Jiaolong blades are symmetrically fixedly mounted on both ends of the connecting rod.

[0012] Furthermore, the suction and compression assembly includes a synchronous belt, which is rotatably mounted on the first synchronous wheel, and the other end of the synchronous belt is rotatably mounted on a second synchronous wheel, and a suction and compression fan is fixedly mounted on the top of the second synchronous wheel, and the suction and compression fan is located in the inner cavity at the top of the feed pipe.

[0013] Furthermore, the stirring assembly comprises a rotating rod, the rotating rod is fixedly mounted on the bottom of the connecting rod, and a stirring rod is fixedly mounted on the bottom of the rotating rod.

[0014] The utility model has the following beneficial effects:

[0015] The utility model drives the output end of the driving component to drive the upward moving component to rotate, and can stir the hexamethyldisilazane and the liquid alkali while making the hexamethyldisilazane and the liquid alkali move upward along the track of the upward moving component, so that the hexamethyldisilazane and the liquid alkali move to the rotating stirring component, and the hexamethyldisilazane and the liquid alkali are sprinkled and mixed again, so that the hexamethyldisilazane and the liquid alkali are better fused, and the driving component drives the two pumping and pressing components to rotate, so that negative pressure is generated at the top of the feed pipe, so that the feed pipe draws the hexamethyldisilazane precipitated at the bottom of the inner cavity of the alkali washing body to the top of the inner cavity of the alkali washing body again, and reacts with the liquid alkali again, so that the hexamethyldisilazane and the liquid alkali are better fused, so as to prevent the hexamethyldisilazane and the liquid alkali from not being fully in contact with each other, resulting in the problem of insufficient purity of the separated hexamethyldisilazane.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the feed pipe of the utility model;

[0020] Figure 3 This is a schematic diagram of the upward moving component of the utility model;

[0021] Figure 4 This is a schematic diagram of the drive motor of the utility model;

[0022] Figure 5 It is a schematic diagram of the connecting rod of the utility model;

[0023] Figure 6 It is a schematic diagram of the suction and pressure fan of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Alkaline cleaning body; 101. Shell; 102. Support legs; 103. Feed inlet; 2. Driving assembly; 201. Driving motor; 202. Output shaft; 203. First synchronous wheel; 3. Upward moving assembly; 301. Connecting rod; 302. Jiaolong blade; 4. Pumping and pressing assembly; 401. Synchronous belt; 402. Second synchronous wheel; 403. Pumping and pressing fan; 5. Feeding pipe; 6. Stirring assembly; 601. Rotating rod; 602. Stirring rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] See also Figure 1-Figure 6 As shown, the utility model is an alkali washing device for the production of hexamethyldisilazane, comprising an alkali washing body 1, a driving component 2 is rotatably installed inside the alkali washing body 1, a stirring component 6 is fixedly installed at the bottom of the driving component 2, an upward moving component 3 is symmetrically fixedly installed at the bottom of the driving component 2, a suction and pressure component 4 is symmetrically rotatably installed at both ends of the driving component 2, a feed guide pipe 5 is arranged on the top of the suction and pressure component 4, and the other end of the feed guide pipe 5 is fixedly installed at the bottom of the inner cavity of the alkali washing body 1.

[0029] When hexamethyldisilazane needs to be alkali-washed, hexamethyldisilazane is first poured into the alkali-washing body 1, and then liquid alkali is poured into the alkali-washing body 1, and then the output end of the driving component 2 is driven to drive the fixedly installed upper moving component 3 to rotate. While the upper moving component 3 rotates, the hexamethyldisilazane and the liquid alkali are stirred and mixed, so that the hexamethyldisilazane and liquid alkali molecules are better fused, and the hexamethyldisilazane and the liquid alkali will move upward along the track of the upper moving component 3, and then the hexamethyldisilazane and the liquid alkali will move together to the stirring component 6. At the same time, since the stirring component 6 is fixedly installed at the bottom of the driving component 2, the driving component 2 can drive the stirring component 6 to rotate. Under the rotation of the stirring component 6, the hexamethyldisilazane and the liquid alkali will be thrown and mixed again, which can better fuse the hexamethyldisilazane and the liquid alkali, thereby preventing the problem that the hexamethyldisilazane and the liquid alkali cannot fully contact each other;

[0030] At the same time, the driving component 2 will drive the two rotatably installed suction and pressure components 4 to rotate. Since the suction and pressure components 4 are arranged at the top of the feed pipe 5, the rotation of the suction and pressure components 4 will cause negative pressure to be generated at the top of the feed pipe 5, so that the feed pipe 5 can extract the hexamethyldisilazane precipitated at the bottom of the inner cavity of the alkali washing body 1 to the top of the inner cavity of the alkali washing body 1 again, and react with the liquid alkali again.

[0031] Thus, by driving the output end of the driving component 2 to drive the upward moving component 3 to rotate, the hexamethyldisilazane and the liquid alkali can be stirred while the hexamethyldisilazane and the liquid alkali can be moved upward along the track of the upward moving component 3, so that they move to the rotating stirring component 6, and the hexamethyldisilazane and the liquid alkali are sprinkled and mixed again, which can better fuse the hexamethyldisilazane and the liquid alkali. In addition, the driving component 2 can drive the two suction and pressure components 4 to rotate, so that negative pressure is generated at the top of the feed pipe 5, so that the feed pipe 5 can extract the hexamethyldisilazane precipitated at the bottom of the inner cavity of the alkali washing body 1 to the top of the inner cavity of the alkali washing body 1 again, and react with the liquid alkali again, so as to better fuse the hexamethyldisilazane and the liquid alkali, thereby preventing the hexamethyldisilazane and the liquid alkali from not being fully in contact with each other, resulting in the problem of insufficient purity of the separated hexamethyldisilazane.

[0032] In one embodiment, for the above-mentioned alkali washing body 1, the alkali washing body 1 includes a shell 101, a plurality of supporting legs 102 are fixedly installed at the bottom of the shell 101, and a feed port 103 is fixedly installed at the top of the shell 101.

[0033] The supporting legs 102 are used to support the outer shell 101 so that the device can maintain stable operation. The feed port 103 is used to pour hexamethyldisilazane and liquid alkali into the outer shell 101.

[0034] In one embodiment, for the above-mentioned driving assembly 2 , the driving assembly 2 includes a driving motor 201 , the driving motor 201 is fixedly mounted on the housing 101 , and an output shaft 202 is fixedly mounted on the output end of the driving motor 201 .

[0035] Two first synchronous wheels 203 are fixedly mounted on the bottom of the output shaft 202 , and the two first synchronous wheels 203 are rotatably mounted with the pumping and pressing components 4 respectively.

[0036] The upward moving assembly 3 includes a connecting rod 301 , and the connecting rod 301 is fixedly mounted on the bottom of the output shaft 202 . Dragon blades 302 are symmetrically fixedly mounted on both ends of the connecting rod 301 .

[0037] When hexamethyldisilazane needs to be washed with alkali, hexamethyldisilazane is first poured into the shell 101 from the feed port 103, and then liquid alkali is also poured into the shell 101, and then the output shaft 202 fixedly installed at the output end of the driving motor 201 is driven to rotate, and then the output shaft 202 will drive the fixedly installed dragon blade 302 to rotate, and while the dragon blade 302 rotates, the hexamethyldisilazane and the liquid alkali are stirred and mixed, so that the hexamethyldisilazane and liquid alkali molecules are better fused, and the hexamethyldisilazane and the liquid alkali will move upward along the track of the dragon blade 302, so as to stir and fuse the hexamethyldisilazane and the liquid alkali, and then the hexamethyldisilazane and the liquid alkali can be better fused, so as to prevent the hexamethyldisilazane and the liquid alkali from not being fully in contact, resulting in the problem of insufficient purity of the separated hexamethyldisilazane.

[0038] In one embodiment, for the above-mentioned suction and pressure assembly 4, the suction and pressure assembly 4 includes a synchronous belt 401, and the synchronous belt 401 is rotatably installed on the first synchronous wheel 203, and the other end of the synchronous belt 401 is rotatably installed with a second synchronous wheel 402, and a suction and pressure fan 403 is fixedly installed on the top of the second synchronous wheel 402, and the suction and pressure fan 403 is located in the inner cavity of the feed pipe 5.

[0039] When the output shaft 202 rotates, the output shaft 202 will drive the two first synchronous wheels 203 fixedly installed to rotate, and then the two first synchronous wheels 203 will drive the synchronous belt 401 rotatably installed on the circumferential surface to rotate, and then the synchronous belt 401 will drive the second synchronous wheel 402 rotatably installed at the other end to rotate, and then the second synchronous wheel 402 will drive the suction and pressure fan 403 fixedly installed thereon to rotate. Since the suction and pressure fan 403 is located in the inner cavity at the top of the feed pipe 5, negative pressure will be generated at the top of the feed pipe 5, so that the feed pipe 5 will draw the hexamethyldisilazane precipitated at the bottom of the inner cavity of the shell 101 to the top of the inner cavity of the alkali washing body 1 again, and react with the liquid alkali again, so as to better fuse the hexamethyldisilazane with the liquid alkali, thereby preventing the hexamethyldisilazane from being insufficiently contacted with the liquid alkali, resulting in the problem of insufficient purity of the separated hexamethyldisilazane.

[0040] In one embodiment, for the stirring assembly 6 , the stirring assembly 6 includes a rotating rod 601 , the rotating rod 601 is fixedly mounted on the bottom of the connecting rod 301 , and a stirring rod 602 is fixedly mounted on the bottom of the rotating rod 601 .

[0041] Hexamethyldisilazane and liquid alkali will move upward along the track of the dragon blade 302, and then hexamethyldisilazane and liquid alkali will move together to the stirring rod 602. At the same time, the rotation of the connecting rod 301 will drive the fixed rotating rod 601 to rotate, and then the rotating rod 601 will drive the fixed stirring rod 602 to rotate, so the stirring rod 602 will sprinkle and mix the hexamethyldisilazane and liquid alkali that move to the stirring rod 602, thereby better fusing the hexamethyldisilazane and liquid alkali, thereby preventing the hexamethyldisilazane and liquid alkali from not being able to fully contact each other, resulting in the problem of insufficient purity of the separated hexamethyldisilazane.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An alkali washing device for producing hexamethyldisilazane, comprising an alkali washing body (1), characterized in that: A driving assembly (2) is rotatably mounted inside the alkali cleaning body (1), a stirring assembly (6) is fixedly mounted at the bottom of the driving assembly (2), an upward moving assembly (3) is symmetrically fixedly mounted at the bottom of the driving assembly (2), a suction and pressure assembly (4) is symmetrically rotatably mounted at both ends of the driving assembly (2), a feed pipe (5) is provided at the top of the suction and pressure assembly (4), and the other end of the feed pipe (5) is fixedly mounted at the bottom of the inner cavity of the alkali cleaning body (1).

2. The alkali washing device for producing hexamethyldisilazane according to claim 1, characterized in that: The alkali washing body (1) comprises an outer shell (101), a plurality of supporting legs (102) are fixedly mounted on the bottom of the outer shell (101), and a feed port (103) is fixedly mounted on the top of the outer shell (101).

3. The alkali washing device for producing hexamethyldisilazane according to claim 2, characterized in that: The drive assembly (2) comprises a drive motor (201), the drive motor (201) is fixedly mounted on the housing (101), and an output shaft (202) is fixedly mounted on the output end of the drive motor (201).

4. The alkali washing device for producing hexamethyldisilazane according to claim 3, characterized in that: Two first synchronous wheels (203) are fixedly mounted on the bottom of the output shaft (202), and the two first synchronous wheels (203) are rotatably mounted on the pumping and pressing components (4) respectively.

5. The alkali washing device for producing hexamethyldisilazane according to claim 4, characterized in that: The upward moving assembly (3) comprises a connecting rod (301), wherein the connecting rod (301) is fixedly mounted on the bottom of the output shaft (202), and dragon blades (302) are symmetrically fixedly mounted on both ends of the connecting rod (301).

6. The alkali washing device for producing hexamethyldisilazane according to claim 5, characterized in that: The suction and compression assembly (4) comprises a synchronous belt (401), wherein the synchronous belt (401) is rotatably mounted on the first synchronous wheel (203), and the other end of the synchronous belt (401) is rotatably mounted with a second synchronous wheel (402), and a suction and compression fan (403) is fixedly mounted on the top of the second synchronous wheel (402), and the suction and compression fan (403) is located in the inner cavity at the top of the feed guide tube (5).

7. An alkali washing device for producing hexamethyldisilazane according to claim 6, characterized in that: The stirring assembly (6) comprises a rotating rod (601), wherein the rotating rod (601) is fixedly mounted on the bottom of the connecting rod (301), and a stirring rod (602) is fixedly mounted on the bottom of the rotating rod (601).

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