Phosphorus trichloride rectification and purification device

Abstract

The invention discloses a phosphorus trichloride rectification purification device which comprises a treatment tank, the bottom end of the treatment tank is connected with a first discharging pipe in an embedded mode, the bottom end of the first discharging pipe is fixedly connected with a feeding pipe, a feeding pump is installed in the feeding pipe, and the other end of the feeding pipe is fixedly connected with a purification tank. A vacuumizing pipe is connected to the upper end of one side of the purification tank in an embedded mode, a gas injection pipe is connected to the lower end of one side of the purification tank in an embedded mode, a second discharging pipe is connected to the bottom end of the purification tank in an embedded mode, a filter screen is installed in the treatment tank, and a stirring mechanism is installed in the treatment tank. In the using process, the efficient phosphorus trichloride mixing device is high in extraction efficiency of effective components of phosphorus trichloride mixed liquid, in the mixing process, stirring is conducted through a stirring machine, accumulation of residual materials in the mixing process is avoided, the raw material matching accuracy is guaranteed, the raw material mixing efficiency is improved, and the raw material mixing device is suitable for large-scale popularization and application. The purity of the purified phosphorus trichloride is improved.

Description

Technical Field

[0001] The invention relates to the technical field of phosphorus trichloride production, in particular to a distillation and purification device for phosphorus trichloride. Background Art

[0002] Phosphorus trichloride is an inorganic compound with the chemical formula PCl3. It is mainly used to manufacture organophosphorus compounds and is also used as a reagent. Phosphorus trichloride can generate hydrochloric acid mist in the air, which is irritating and corrosive to the skin and mucous membranes. Inhalation of a large amount of vapor in a short period of time can cause upper respiratory tract irritation symptoms, pharyngitis, bronchitis, and in severe cases, laryngeal edema can occur, leading to suffocation, pneumonia or pulmonary edema. It is mainly used to manufacture organophosphorus pesticides. When producing phosphorus trichloride, a distillation and purification device is required to distill and purify the phosphorus trichloride mixed liquid.

[0003] The existing phosphorus trichloride mixed liquid distillation and purification device has low extraction efficiency for effective components of the phosphorus trichloride mixed liquid during use, and during the mixing process, residual materials are easily accumulated by the mixer, resulting in inaccurate raw material ratio and affecting the purity of phosphorus trichloride. Summary of the invention

[0004] The invention aims to solve the problems of the existing phosphorus trichloride mixed liquid distillation and purification device, in which the extraction efficiency of the effective components of the phosphorus trichloride mixed liquid is low during use, and in the mixing process, the mixing by a stirrer is prone to accumulation of residual materials, resulting in inaccurate raw material ratio and affecting the purity of phosphorus trichloride, and the phosphorus trichloride distillation and purification device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The distillation and purification device of phosphorus trichloride comprises a treatment tank, the bottom end of the treatment tank is connected with a first discharge pipe, and the bottom end of the first discharge pipe is fixedly connected with a feed pipe, a feed pump is installed inside the feed pipe, and the other end of the feed pipe is fixedly connected with a purification tank, an upper end of one side of the purification tank is connected with an evacuation pipe, and a lower end of one side of the purification tank is connected with an injection pipe, and the bottom end of the purification tank is connected with a second discharge pipe, a filter is installed inside the treatment tank, and a stirring mechanism is installed inside the treatment tank, the stirring mechanism includes a support frame fixedly connected to the upper end of the inner wall of the treatment tank, and the bottom end of the support frame is fixedly connected with a bearing, The bottom end of the bearing is rotatably connected to a rotating rod, and a stirring paddle is fixedly connected to the surface of the rotating rod, the top end of the support frame is embedded with a motor, and the motor passes through the bearing and is fixedly connected to the rotating rod, telescopic sleeves are fixedly connected to the two sides of the rotating rod, and the telescopic rod is movably sleeved inside the telescopic sleeve, a first groove is provided on one side of the telescopic rod, and a first compression spring is fixedly connected inside the first groove, and a block is fixedly connected to the other end of the first compression spring, the other end of the telescopic rod is fixedly connected to a mounting plate, and a scraper is fixedly connected inside the mounting plate, an anti-blocking mechanism is installed at the bottom end of the telescopic sleeve, and a pressure relief mechanism is installed at the top of the purification tank.

[0006] As a further description of the above technical solution: The clamping block and the telescopic sleeve are movably sleeved, and the clamping block forms an elastic telescopic structure through the first compression spring and the first groove.

[0007] As a further description of the above technical solution: The anti-blocking mechanism includes a sleeve welded to the bottom end of the telescopic sleeve, and the inside of the sleeve is fixedly connected to a second compression spring, the bottom end of the second compression spring is fixedly connected to a first connecting rod, and the bottom end of the first connecting rod is fixedly connected to a cleaning brush.

[0008] As a further description of the above technical solution: The cleaning brush is movably connected to the surface of the filter screen, and the cleaning brush is movably connected to the processing tank.

[0009] As a further description of the above technical solution: The first connecting rod is movably connected to the interior of the sleeve, and an elastic telescopic structure is formed between the first connecting rod and the sleeve via the second compression spring.

[0010] As a further description of the above technical solution: The pressure relief mechanism includes a pressure relief pipe that is embedded in the top of the purification tank, and the pressure relief pipe has a sleeve movably sleeved inside. A plurality of through holes are equidistantly provided on the surface of the sleeve, and a rubber plate is fused to the top of the sleeve. A mounting frame is welded to the top of the purification tank, and a hydraulic rod is embedded in the top of the mounting frame, and a connecting plate is fixedly connected to the bottom end of the hydraulic rod. A plurality of third grooves are provided at the bottom end of the connecting plate, and a third compression spring is fixedly connected to the inside of the third groove, and the other end of the third compression spring is fixedly connected to a second connecting rod, and the second connecting rod and the top of the rubber plate are fused.

[0011] As a further description of the above technical solution: The second connecting rod is movably connected to the inside of the third groove, and the second connecting rod forms an elastic telescopic structure with the third groove via the third compression spring.

[0012] As a further description of the above technical solution: The connecting plate and the mounting frame form a lifting structure through a hydraulic rod, and the rubber plate and the top end of the pressure relief pipe are movably connected.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the card block is squeezed, and the card block squeezes the first compression spring to retract into the first groove, and then the telescopic rod is manually pulled, and the telescopic rod telescopically moves in the telescopic sleeve, thereby driving the scraper to move, and the scraper is attached to the inner wall of the processing tank. Through the elastic characteristics of the first compression spring, the card block is squeezed to reset and move, and the sleeve is inserted into the preset plug hole of the telescopic sleeve to fix the telescopic rod, and then the phosphorus trichloride raw material to be mixed is put into the processing tank to complete the pretreatment of the phosphorus trichloride raw material.

[0014] 2. In the present invention, under the action of the stirring mechanism, the motor can drive the rotating rod to rotate, so that its multiple stirring paddles can stir and mix the raw materials in the processing tank. At the same time, the rotating rod can drive the scraper to rotate, and the scraper can scrape the inner wall of the processing tank, changing the previous situation that the inner wall of the processing tank is prone to accumulation of residual materials, and improving the mixing and stirring speed. The position of the scraper can be adjusted, and it can be flexibly adjusted according to processing tanks of different sizes, so that it can keep fitting the inner wall of the processing tank, preventing long-term scraping from causing wear and tear, and preventing the situation where it cannot fit the inner wall of the processing tank.

[0015] 3. In the present invention, under the action of the anti-blocking mechanism, the telescopic sleeve can be driven to rotate at the same time by rotation. The telescopic sleeve can drive the cleaning brush to scrape the surface of the filter to prevent the filter from being blocked. The raw materials can be filtered through the filter to prevent excessive block raw materials from entering the feeding pipe and causing blockage of the feeding pipe or the feeding pump, so that the device has the function of screening and dividing materials.

[0016] 4. In the present invention, under the action of the pressure relief mechanism, the casing can be driven to move up and down by the hydraulic rod, and the pressure relief operation can be performed inside the purification tank through the multiple through holes opened on the surface of the casing, which can prevent the pressure difference between the purification tank and the external pressure from being too large, causing the deformation of the purification tank shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the treatment tank of the present invention; Figure 3 It is a schematic diagram of the structure of the stirring mechanism part in the present invention from a top view; Figure 4 It is a structural schematic diagram of the anti-blocking mechanism in the present invention; Figure 5 It is a structural schematic diagram of the pressure relief mechanism in the present invention; Figure 6 for Figure 5 Schematic diagram of the structure enlarged at point A in the middle.

[0018] Legend: 1. Processing tank; 2. First discharge pipe; 3. Feed pipe; 4. Feed pump; 5. Purification tank; 6. Vacuum pipe; 7. Gas injection pipe; 8. Second discharge pipe; 9. Filter; 10. Stirring mechanism; 11. Support frame; 12. Bearing; 13. Rotating rod; 14. Stirring paddle; 15. Motor; 16. Telescopic sleeve; 17. Telescopic rod; 18. First groove; 19. First compression spring; 20. Block; 21. Mounting plate; 22. Scraper; 23. Anti-blocking mechanism; 24. Sleeve; 25. Second compression spring; 26. First connecting rod; 27. Cleaning brush; 28. Pressure relief mechanism; 29. ​​Pressure relief pipe; 30. Sleeve; 31. Through hole; 32. Rubber sheet; 33. Mounting frame; 34. Hydraulic rod; 35. Connecting plate; 36. Third groove; 37. Third compression spring; 38. Second connecting rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1-6, a distillation and purification device for phosphorus trichloride, includes a processing tank 1, a first discharge pipe 2 is embedded in the bottom end of the processing tank 1, and a feed pipe 3 is fixedly connected to the bottom end of the first discharge pipe 2, a feed pump 4 is installed inside the feed pipe 3, and a purification tank 5 is fixedly connected to the other end of the feed pipe 3, an evacuation pipe 6 is embedded in the upper end of one side of the purification tank 5, and an injection pipe 7 is embedded in the lower end of one side of the purification tank 5, and a second discharge pipe 8 is embedded in the bottom end of the purification tank 5, a filter screen 9 is installed inside the processing tank 1, and a stirring mechanism 10 is installed inside the processing tank 1, the stirring mechanism 10 includes a support frame 11 fixedly connected to the upper end of the inner wall of the processing tank 1, and the bottom end of the support frame 11 is fixedly connected to a bearing 12, the bottom end of the bearing 12 is rotatably connected to a rotating rod 13, and a stirring paddle 14 is fixedly connected to the surface of the rotating rod 13, and the top of the support frame 11 is embedded in the upper end of the inner wall of the processing tank 1 A motor 15 is connected, and the motor 15 is fixedly connected to the rotating rod 13 through the bearing 12. Telescopic sleeves 16 are fixedly connected to both sides of the rotating rod 13, and a telescopic rod 17 is movably sleeved inside the telescopic sleeve 16. A first groove 18 is opened on one side of the telescopic rod 17, and a first compression spring 19 is fixedly connected inside the first groove 18, and a block 20 is fixedly connected to the other end of the first compression spring 19. A mounting plate 21 is fixedly connected to the other end of the telescopic rod 17, and a scraper 22 is fixedly connected inside the mounting plate 21. An anti-blocking mechanism 23 is installed at the bottom end of the telescopic sleeve 16, and a pressure relief mechanism 28 is installed at the top of the purification tank 5. The motor 15 drives the rotating rod 13 to rotate, and the rotating rod 13 can drive multiple stirring paddles 14 to rotate. The stirring paddles 14 can stir, crush and mix the raw materials in the processing tank 1, and the size of the raw materials can be screened through the filter screen 9.

[0021] Reference Figure 2 , Figure 3 The block 20 and the telescopic sleeve 16 are movably connected, and the block 20 forms an elastic telescopic structure through the first compression spring 19 and the first groove 18. The telescopic rod 17 telescopes and moves in the telescopic sleeve 16, thereby driving the scraper 22 to move, and the scraper 22 can be attached to the inner wall of the processing tank 1.

[0022] Reference Figure 4 The anti-blocking mechanism 23 includes a sleeve 24 welded to the bottom end of the telescopic sleeve 16, and a second compression spring 25 is fixedly connected to the inside of the sleeve 24, and the bottom end of the second compression spring 25 is fixedly connected to the first connecting rod 26, and the bottom end of the first connecting rod 26 is fixedly connected to the cleaning brush 27, and the telescopic sleeve 16 can drive the sleeve 24 to rotate.

[0023] Reference Figure 4 The cleaning brush 27 is movably connected to the surface of the filter screen 9 , and the cleaning brush 27 is movably connected to the processing tank 1 . The sleeve 24 can drive the cleaning brush 27 to scrape the surface of the filter screen 9 .

[0024] Reference Figure 4 The first connecting rod 26 is movably connected to the inside of the sleeve 24, and the first connecting rod 26 forms an elastic telescopic structure with the sleeve 24 through the second compression spring 25 to prevent the filter screen 9 from clogging due to accumulation of raw materials.

[0025] Reference Figure 5 , Figure 6 The pressure relief mechanism 28 includes a pressure relief pipe 29 that is embedded and connected to the top of the purification tank 5, and a sleeve 30 is movably sleeved inside the pressure relief pipe 29. A plurality of through holes 31 are equidistantly provided on the surface of the sleeve 30, and a rubber plate 32 is fused to the top of the sleeve 30. A mounting frame 33 is welded to the top of the purification tank 5, and a hydraulic rod 34 is embedded and connected to the top of the mounting frame 33, and a connecting plate 35 is fixedly connected to the bottom end of the hydraulic rod 34, and a plurality of third grooves 36 are provided at the bottom end of the connecting plate 35, and a third compression spring 37 is fixedly connected to the inside of the third groove 36, and a second connecting rod 38 is fixedly connected to the other end of the third compression spring 37, and the second connecting rod 38 is fused to the top of the rubber plate 32, and the hydraulic rod 34 can drive the connecting plate 35 to move up and down.

[0026] Reference Figure 5 , Figure 6 The second connecting rod 38 is movably connected to the inside of the third groove 36, and the second connecting rod 38 forms an elastic telescopic structure with the third groove 36 through the third compression spring 37. The connecting plate 35 can pull the sleeve 30 to move upward, and the sleeve 30 exposes multiple through holes 31 opened on the surface, which can relieve pressure in the purification tank 5.

[0027] Reference Figure 5 , Figure 6 The connecting plate 35 forms a lifting structure with the mounting frame 33 through the hydraulic rod 34 , and the rubber plate 32 is movably connected to the top of the pressure relief pipe 29 , so that the rubber plate 32 can block and seal the pressure relief pipe 29 .

[0028] Working principle: when in use, first squeeze the card block 20 manually, the card block 20 squeezes the first compression spring 19 to shrink into the first groove 18, then manually pull the telescopic rod 17, the telescopic rod 17 telescopically moves in the telescopic sleeve 16, thereby driving the scraper 22 to move, and the scraper 22 is attached to the inner wall of the processing tank 1, and the elastic characteristics of the first compression spring 19 squeeze the card block 20 to reset and move, and insert it into the preset plug hole of the telescopic sleeve 16 to fix the telescopic rod 17, and then put the phosphorus trichloride raw material to be mixed into the processing tank 1, and the motor 15 drives the rotating rod 13 to rotate, and the rotating rod 13 drives multiple stirring paddles 14 to rotate, and the stirring paddles 14 stir and crush the raw materials in the processing tank 1, and at the same time, the rotating rod 13 drives the scraper 22 to rotate, and the scraper 22 scrapes the inner wall of the processing tank 1, and the crushed phosphorus trichloride raw material after mixing and stirring passes through the filter screen 9 into the feeding pipe 3, and the rotating rod 13 drives the telescopic The sleeve 16 rotates, and the telescopic sleeve 16 drives the sleeve 24 to rotate, so that the sleeve 24 drives the cleaning brush 27 to scrape the surface of the filter screen 9 to prevent the filter screen 9 from being blocked. Through the elastic characteristics of the second compression spring 25, the cleaning brush 27 is squeezed to fit closely with the filter screen 9, and the mixed material is sent into the purification tank 5 through the feeding pump 4. The purification tank 5 is evacuated through the evacuation pipe 6 to maintain a vacuum. Inert gas or nitrogen is injected into the purification tank 5 through the gas injection pipe 7. After the distillation and purification are completed, the purified material is discharged through the second discharge pipe 8. When the pressure in the purification tank 5 is too high, the connecting plate 35 is driven to move upward by the hydraulic rod 34, and the connecting plate 35 pulls the sleeve 30 to move upward. The sleeve 30 exposes a plurality of through holes 31 opened on the surface, and the pressure in the purification tank 5 is relieved. On the contrary, the hydraulic rod 34 can drive the connecting plate 35 to move downward, and the sealing pressure relief pipe 29 is blocked by the rubber plate 32 to form a sealed environment.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A distillation and purification device for phosphorus trichloride, comprising a treatment tank (1), characterized in that: The bottom end of the processing tank (1) is connected with a first discharge pipe (2), and the bottom end of the first discharge pipe (2) is fixedly connected with a feed pipe (3), a feed pump (4) is installed inside the feed pipe (3), and the other end of the feed pipe (3) is fixedly connected with a purification tank (5), an upper end of one side of the purification tank (5) is connected with an evacuation pipe (6), and a lower end of one side of the purification tank (5) is connected with an injection pipe (7), and the bottom end of the purification tank (5) is connected with a second discharge pipe (8), a filter screen (9) is installed inside the processing tank (1), and a stirring mechanism (10) is installed inside the processing tank (1), the stirring mechanism (10) includes a support frame (11) fixedly connected to the upper end of the inner wall of the processing tank (1), and the bottom end of the support frame (11) is fixedly connected with a bearing (12), the bottom end of the bearing (12) is rotatably connected with a rotating rod (13), and the rotating rod A stirring paddle (14) is fixedly connected to the surface of the support frame (13); a motor (15) is embeddedly connected to the top end of the support frame (11), and the motor (15) passes through the bearing (12) and is fixedly connected to the rotating rod (13); telescopic sleeves (16) are fixedly connected to both sides of the rotating rod (13), and a telescopic rod (17) is movably sleeved inside the telescopic sleeve (16); a first groove (18) is opened on one side of the telescopic rod (17), and a first compression spring (19) is fixedly connected inside the first groove (18), and a clamping block (20) is fixedly connected to the other end of the first compression spring (19); a mounting plate (21) is fixedly connected to the other end of the telescopic rod (17), and a scraper (22) is fixedly connected inside the mounting plate (21); an anti-blocking mechanism (23) is installed at the bottom end of the telescopic sleeve (16), and a pressure relief mechanism (28) is installed at the top end of the purification tank (5).

2. The rectifying and purifying device for phosphorus trichloride according to claim 1, characterized in that: The clamping block (20) and the telescopic sleeve (16) are movably sleeved, and the clamping block (20) forms an elastic telescopic structure through the first compression spring (19) and the first groove (18).

3. The rectifying and purifying device for phosphorus trichloride according to claim 1, characterized in that: The anti-blocking mechanism (23) comprises a sleeve (24) welded to the bottom end of the telescopic sleeve (16), and a second compression spring (25) is fixedly connected to the inside of the sleeve (24), the bottom end of the second compression spring (25) is fixedly connected to the first connecting rod (26), and the bottom end of the first connecting rod (26) is fixedly connected to the cleaning brush (27).

4. The rectifying and purifying device for phosphorus trichloride according to claim 3, characterized in that: The cleaning brush (27) is movably connected to the surface of the filter screen (9), and the cleaning brush (27) is movably connected to the processing tank (1).

5. The rectification and purification device for phosphorus trichloride according to claim 3, characterized in that: The first connecting rod (26) is movably connected to the interior of the sleeve (24), and an elastic telescopic structure is formed between the first connecting rod (26) and the sleeve (24) via the second compression spring (25).

6. The distillation and purification device for phosphorus trichloride according to claim 1, characterized in that: The pressure relief mechanism (28) includes a pressure relief pipe (29) embedded in the top of the purification tank (5), and a sleeve (30) is movably sleeved inside the pressure relief pipe (29). A plurality of through holes (31) are equidistantly provided on the surface of the sleeve (30), and a rubber plate (32) is fused to the top of the sleeve (30). A mounting frame (33) is welded to the top of the purification tank (5), and a hydraulic rod (34) is embedded in the top of the mounting frame (33), and a connecting plate (35) is fixedly connected to the bottom of the hydraulic rod (34). A plurality of third grooves (36) are provided at the bottom of the connecting plate (35), and a third compression spring (37) is fixedly connected inside the third groove (36). The other end of the third compression spring (37) is fixedly connected to a second connecting rod (38), and the second connecting rod (38) and the top of the rubber plate (32) are fused to each other.

7. The distillation and purification device for phosphorus trichloride according to claim 6, characterized in that: The second connecting rod (38) is movably connected to the interior of the third groove (36), and the second connecting rod (38) forms an elastic telescopic structure with the third groove (36) via the third compression spring (37).

8. The distillation and purification device for phosphorus trichloride according to claim 6, characterized in that: The connecting plate (35) forms a lifting structure with the mounting frame (33) via a hydraulic rod (34), and the rubber plate (32) is movably connected to the top end of the pressure relief pipe (29).

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