Oxygen and phosphorus dropwise adding structure suitable for preparing trioctyl phosphate

Abstract

An oxygen and phosphorus dropwise adding structure suitable for preparing trioctyl phosphate relates to a dropwise adding structure, and is characterized in that an electric telescopic rod (13) extending downwards is arranged at the bottom of a fixed seat (11), an extrusion rod (14) is arranged at the lower end of the electric telescopic rod (13), a hemispherical head (17) is arranged at the lower end of the extrusion rod (14), and the extrusion rod (14) can slide in an extrusion cavity (18) and can be separated from the extrusion cavity (18); the extrusion rod (14) is in transition fit with the inner wall of the extrusion cavity (18); the dripping pipe is arranged at the top of the tank body, the extrusion pipe is arranged at the bottom of the dripping pipe, and phosphorus oxychloride in the extrusion pipe is extruded by the extrusion rod arranged on the electric telescopic rod arranged in the dripping pipe; phosphorus oxychloride in the extrusion pipe is extruded out along a plurality of cross-shaped gaps formed in a semispherical silica gel film arranged at the lower end of the extrusion pipe, and the purpose of spraying and instilling phosphorus oxychloride according to the cross valve principle is achieved.

Description

Technical Field

[0001] The utility model relates to a dropping structure, in particular to an oxygen and phosphorus dropping structure suitable for preparing trioctyl phosphate. Background Art

[0002] Trioctyl phosphate (TOP) is a nearly colorless liquid widely used in chemical production as a flame retardant, plasticizer, and extractant. Its most important application is in hydrogen peroxide production. It is produced by reacting isooctyl alcohol with phosphorus oxychloride. The steps for preparing TOP are: 1. Add dropwise and keep warm; 2. Neutralize and wash with water; 3. Distill the alcohol; and 4. Refine.

[0003] During the step of adding and maintaining heat, phosphorus oxychloride needs to be gradually added dropwise to the isooctanol solution. The conventional method of adding dropwise is generally to first inject the isooctanol solution into the stirred tank, and then directly drop the phosphorus oxychloride from the dropping nozzle on the top of the tank. This will cause the phosphorus oxychloride to continuously drip into the same position of the isooctanol solution, which is not conducive to the diffusion of the phosphorus oxychloride after the addition, and reduces the reaction effect. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model discloses a phosphorus oxychloride dripping structure suitable for preparing trioctyl phosphate. A dripping tube is arranged on the top of a tank body, and an extrusion tube is arranged at the bottom of the dripping tube. The phosphorus oxychloride in the extrusion tube is squeezed by an extrusion rod provided on an electric telescopic rod provided in the dripping tube, so that the phosphorus oxychloride in the extrusion tube is squeezed along multiple cross-shaped slits provided on a hemispherical silicone membrane provided at the lower end of the extrusion tube, thereby achieving the purpose of spraying and dripping the phosphorus oxychloride by utilizing the cross valve principle.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] The invention discloses an oxygen and phosphorus dropping structure suitable for preparing trioctyl phosphate, comprising a tank body, a tank cavity provided in the tank body, a motor provided on the top of the tank body, a stirring shaft provided with the motor extending into the tank cavity along a hole provided in the top of the tank body, a stirring paddle provided at the lower end of the stirring shaft, a dropping tube provided on one side of the top of the tank body, the lower end of the dropping tube extending into the tank cavity, a tube cavity provided in the dropping tube, a gradually shrinking bell mouth provided at the lower end of the dropping tube, a bell cavity penetrating the tube cavity provided in the bell mouth, and an extrusion tube provided at the lower end of the bell mouth. An extrusion chamber is provided in the extrusion tube, a hemispherical silicone membrane is provided at the lower end of the extrusion tube, a hemispherical cavity penetrating the extrusion chamber is provided in the hemispherical silicone membrane, a plurality of cross-shaped slits are provided at intervals on the membrane wall of the hemispherical silicone membrane, a fixed seat is provided at the center position of the middle part of the tube cavity, an electric telescopic rod extending downward is provided at the bottom of the fixed seat, an extrusion rod is provided at the lower end of the electric telescopic rod, and a hemispherical head is provided at the lower end of the extrusion rod. The extrusion rod can slide and disengage in the extrusion chamber, and the extrusion rod and the inner wall of the extrusion chamber are transitionally matched.

[0007] The phosphorus oxide dropping structure suitable for preparing trioctyl phosphate has a plurality of connecting strips arranged at intervals around and between the fixing seat and the inner wall of the tube cavity.

[0008] The phosphorus oxide dropping structure suitable for preparing trioctyl phosphate is provided with a feed pipe on the other side of the top of the tank body.

[0009] The phosphorus oxide dropping structure suitable for preparing trioctyl phosphate is provided with a discharge pipe at the center of the bottom of the tank.

[0010] The oxygen and phosphorus dropping structure suitable for preparing trioctyl phosphate has a hemispherical head and a hemispherical cavity in the same shape.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The utility model discloses a phosphorus oxychloride dripping structure suitable for preparing trioctyl phosphate. The structure comprises a dripping tube arranged on the top of a tank body, an extrusion tube arranged on the bottom of the dripping tube, and an extrusion rod provided on an electric telescopic rod provided in the dripping tube to extrude the phosphorus oxychloride in the extrusion tube, so that the phosphorus oxychloride in the extrusion tube is extruded along a plurality of cross-shaped slits provided on a hemispherical silicone membrane provided at the lower end of the extrusion tube, thereby achieving the purpose of spraying and dripping the phosphorus oxychloride by utilizing the cross valve principle. The utility model has a novel structure, a simple transformation process, a good use effect, an enhanced dripping effect, and has promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the drip tube of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the fixing seat and the connecting strip of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the drip tube of the utility model when the electric telescopic rod is extended;

[0017] Figure 5 This is a structural diagram of the electric telescopic rod in the drip tube of the utility model when it is retracted.

[0018] In the figure: 1. Motor; 2. Feed pipe; 3. Drip tube; 4. Extrusion tube; 5. Tank body; 6. Tank cavity; 7. Stirring shaft; 8. Stirring paddle; 9. Discharge pipe; 10. Tube cavity; 11. Fixed seat; 12. Connecting strip; 13. Electric telescopic rod; 14. Extrusion rod; 15. Horn cavity; 16. Bell mouth; 17. Hemispherical head; 18. Extrusion cavity; 19. Cross-shaped gap; 20. Hemispherical cavity; 21. Hemispherical silicone membrane. DETAILED DESCRIPTION

[0019] The present invention can be explained in more detail through the following examples. The present invention is not limited to the following examples. The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention.

[0020] Combined with attachment Figures 1 to 3 The oxygen and phosphorus dropping structure suitable for preparing trioctyl phosphate includes a tank body 5, a tank cavity 6 is provided in the tank body 5, a motor 1 is provided on the top of the tank body 5, a stirring shaft 7 provided with the motor 1 extends into the tank cavity 6 along the hole provided in the top of the tank body 5, a stirring paddle 8 is provided at the lower end of the stirring shaft 7, a dropping tube 3 is provided on one side of the top of the tank body 5, the lower end of the dropping tube 3 extends into the interior of the tank cavity 6, a tube cavity 10 is provided in the dropping tube 3, a gradually shrinking bell mouth 16 is provided at the lower end of the dropping tube 3, a bell cavity 15 that passes through the tube cavity 10 is provided in the bell mouth 16, an extrusion tube 4 is provided at the lower end of the bell mouth 16, an extrusion cavity 18 is provided in the extrusion tube 4, a hemispherical silicone membrane 21 is provided at the lower end of the extrusion tube 4, and a hemispherical silicone membrane 21 is provided. There is a hemispherical cavity 20 that passes through the extrusion cavity 18, and a plurality of cross-shaped slits 19 are spaced apart on the membrane wall of the hemispherical silicone membrane 21. A fixing seat 11 is provided at the center position of the middle part of the tube cavity 10, and a plurality of connecting strips 12 are spaced around the inner wall of the fixing seat 11 and the tube cavity 10. A downwardly extending electric telescopic rod 13 is provided at the bottom of the fixing seat 11, and an extrusion rod 14 is provided at the lower end of the electric telescopic rod 13. A hemispherical head 17 is provided at the lower end of the extrusion rod 14. The extrusion rod 14 can slide and disengage in the extrusion cavity 18, and the extrusion rod 14 and the inner wall of the extrusion cavity 18 are transitionally matched. The hemispherical head 17 and the hemispherical cavity 20 have the same shape. A feed pipe 2 is provided on the other side of the top of the tank body 5, and a discharge pipe 9 is provided at the center position of the bottom of the tank body 5.

[0021] The phosphorus oxychloride drop-feeding structure for preparing trioctyl phosphate described in the utility model is implemented by connecting the motor 1 and the electric telescopic rod 13 to a switch and a power supply respectively. When in use, the required amount of isooctyl alcohol is added into the tank cavity 6 along the feed pipe 2, the motor 1 is turned on, the motor 1 drives the stirring shaft 7 to rotate, and then drives the stirring paddle 8 to rotate, the stirring paddle 8 stirs the isooctyl alcohol, the extrusion rod 14 is removed from the extrusion cavity 18, and the required amount of phosphorus oxychloride is injected into the dripping tube 3. The phosphorus oxychloride in the tube cavity 10 flows down along the horn cavity 15 to squeeze the phosphorus oxychloride. When the pressure chamber 18 and the hemispherical chamber 20 are filled, the electric telescopic rod 13 is turned on to extend the electric telescopic rod 13. When the extrusion rod 14 is extended into the extrusion chamber 18, the phosphorus oxychloride filled in the extrusion chamber 18 and the hemispherical chamber 20 is squeezed by the extrusion rod 14. The multiple cross-shaped slits 19 provided on the hemispherical silicone membrane 21 are deformed under the extrusion of the phosphorus oxychloride, and then the phosphorus oxychloride filled in the extrusion chamber 18 and the hemispherical chamber 20 is sprayed out along the multiple cross-shaped slits 19 provided on the hemispherical silicone membrane 21, forming a spraying and dripping effect; combined with the attached Figure 4 When the hemispherical head 17 completely fills the hemispherical cavity 20, the electric telescopic rod 13 stops extending, and the phosphorus oxychloride filled in the extrusion cavity 18 and the hemispherical cavity 20 is completely discharged. Figure 5 The electric telescopic rod 13 begins to shorten. Due to the transition fit between the extrusion rod 14 and the inner wall of the extrusion chamber 18, negative pressure is formed in the extrusion chamber 18 and the hemispherical chamber 20. When the hemispherical head 17 is released from the hemispherical silicone membrane 21, the elastic hemispherical silicone membrane 21 changes from convex to concave under the action of the negative pressure. The air in the tank cavity 6 is sucked into the extrusion chamber 18 through the multiple cross-shaped gaps 19 until the extrusion rod 14 and the extrusion chamber 18 are separated. The hemispherical silicone membrane 21 restores its convexity from concave due to its own elasticity, and the phosphorus oxychloride in the lumen 10 fills the extrusion chamber 18 and the hemispherical chamber 20 along the horn chamber 15 again. By following the above steps in a cycle, the purpose of spraying and dripping phosphorus oxychloride using the cross valve principle can be achieved.

[0022] The parts not described in detail in this utility model are prior art.

Claims

1. An oxygen-phosphorus drop-adding structure suitable for preparing trioctyl phosphate, comprising a tank body (5), a tank cavity (6) provided in the tank body (5), a motor (1) provided on the top of the tank body (5), a stirring shaft (7) provided on the motor (1) extending into the tank cavity (6) along a hole provided on the top of the tank body (5), and a stirring paddle (8) provided at the lower end of the stirring shaft (7), wherein: A dripping tube (3) is provided on one side of the top of the tank body (5), the lower end of the dripping tube (3) extends into the tank cavity (6), a tube cavity (10) is provided in the dripping tube (3), a gradually narrowing bell mouth (16) is provided at the lower end of the dripping tube (3), a bell cavity (15) penetrating the tube cavity (10) is provided in the bell mouth (16), an extrusion tube (4) is provided at the lower end of the bell mouth (16), an extrusion cavity (18) is provided in the extrusion tube (4), a hemispherical silicone membrane (21) is provided at the lower end of the extrusion tube (4), and a penetrating extrusion cavity (18) is provided in the hemispherical silicone membrane (21). The hemispherical cavity (20) of the pressure cavity (18) has a plurality of cross-shaped slits (19) spaced apart on the membrane wall of the hemispherical silicone membrane (21). A fixing seat (11) is provided at the center of the middle of the tubular cavity (10). A downwardly extending electric telescopic rod (13) is provided at the bottom of the fixing seat (11). An extrusion rod (14) is provided at the lower end of the electric telescopic rod (13). A hemispherical head (17) is provided at the lower end of the extrusion rod (14). The extrusion rod (14) can slide in and out of the extrusion cavity (18), and the extrusion rod (14) and the inner wall of the extrusion cavity (18) are transitionally matched.

2. The phosphorus oxide drop-adding structure suitable for preparing trioctyl phosphate according to claim 1, characterized in that: A plurality of connecting strips (12) are arranged at intervals around the fixing seat (11) and the inner wall of the tube cavity (10).

3. The phosphorus oxide drop-adding structure suitable for preparing trioctyl phosphate according to claim 1, characterized in that: A feed pipe (2) is provided on the other side of the top of the tank body (5).

4. The phosphorus oxide drop-adding structure suitable for preparing trioctyl phosphate according to claim 1, characterized in that: A discharge pipe (9) is provided at the center of the bottom of the tank body (5).

5. The phosphorus oxide drop-adding structure suitable for preparing trioctyl phosphate according to claim 1, characterized in that: The hemispherical head (17) and the hemispherical cavity (20) have the same shape.

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