A separation device and method for producing and processing metaphosphate

Abstract

The invention discloses a separation device and method for metaphosphate production and processing, which belongs to the technical field of metaphosphate production. The device comprises a reactor body and a heating layer arranged on the inner wall of the reactor body, wherein a feed pipe is arranged at the upper end of one side of the reactor body, a feed hopper is arranged at the input end of the feed pipe, a discharge port is arranged at one side of the lower end of the reactor body, a hollow tube is rotatably arranged in the middle of the reactor body, a driving component matched with the hollow tube is arranged at the lower end of the reactor body, a collecting component is arranged in the middle of the hollow tube, a reflux component is arranged in the middle of the reactor body, and an auxiliary component is arranged inside the hollow tube. Through the mutual cooperation of the driving component, the collecting component and the reflux component, water vapor generated by high-temperature dehydration is recycled, and the water vapor generated by high-temperature dehydration of orthophosphoric acid is avoided from being directly discharged, so as to solve the problem that toxic gas generated by high-temperature dehydration of orthophosphoric acid will be discharged with water vapor to pollute the environment, and the energy utilization rate of water vapor is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metaphosphate production, and in particular to a separation device and method for metaphosphate production and processing. Background Art

[0002] Metaphosphoric acid has the chemical formula HPO₃, a molecular weight of 79.98, and is a colorless, glassy substance with a deliquescent density of 2.2-2.5 g / cm₃. It is readily soluble in water and forms toxic orthophosphoric acid H₃PO₄. It is used as a chemical reagent, dehydrating agent, and catalyst. It is produced by the high-temperature dehydration of phosphoric acid or by the reaction of phosphorus pentoxide with an appropriate amount of water. Metaphosphates are the product of a redox reaction between the acidic hydroxyl groups of metaphosphoric acid and metals, where the phosphorus hydroxyl groups are replaced by metal ions. Metaphosphate is an industrial reagent that exists in various aggregate states, such as hexametaphosphate.

[0003] Most existing metaphosphate production and separation devices utilize a reactor, a heating layer, and a stirring device to perform high-temperature dehydration of phosphoric acid. However, the high-temperature dehydration of phosphoric acid generates water vapor that is directly discharged, causing toxic gases in the phosphoric acid to be released along with the water vapor, causing environmental pollution. Furthermore, the water vapor discharge port is always open, causing gas to circulate inside the reactor, resulting in a slow temperature rise inside the reactor. In view of this, a separation device and method for metaphosphate production and processing are proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems and to propose a separation device and method for the production and processing of metaphosphate.

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

[0006] A separation device for metaphosphate production and processing, comprising a reactor body and a heating layer provided on the inner wall of the reactor body, a feed pipe provided at the upper end of one side of the reactor body, a feed hopper provided at the input end of the feed pipe, a discharge port provided at one side of the lower end of the reactor body, a hollow tube rotatably provided in the middle of the reactor body, a drive assembly cooperating with the hollow tube provided at the lower end of the reactor body, a collection assembly provided in the middle of the hollow tube, a reflux assembly provided in the middle of the reactor body, and an auxiliary assembly provided inside the hollow tube;

[0007] The drive assembly includes a mounting shell provided at the lower end of the reactor body, a fixing plate provided inside the mounting shell, and a drive motor provided in the middle of the lower end of the mounting shell. The lower end of the hollow tube passes through the mounting shell and is connected to the output end of the drive motor.

[0008] The collecting assembly includes a mounting plate sleeved on the middle of the hollow tube and two collecting shells symmetrically arranged on the outside of the hollow tube. The two collecting shells are located below the mounting plate. Two connecting covers are symmetrically arranged on the upper end of the mounting plate. Ventilation holes connected to the interior of the two connecting covers are respectively opened in the middle of the mounting plate. Sealing plates are slidably arranged inside the two connecting covers. Connecting rods are respectively provided at the middle of the lower ends of the two sealing plates. The lower ends of the two connecting rods are respectively movable and penetrate into the two collecting shells and are provided with conical blocks. Multiple collecting buckets are arranged on the upper ends of the two collecting shells. The lower ends of the multiple collecting buckets are They are all connected with the interior of the collecting shell, and a sealing ball is provided at the lower end of each of the collecting buckets. A movable plate is provided for sliding inside the collecting shell, and two steel balls that cooperate with the inner wall of the collecting shell are embedded in the upper and lower end surfaces of the movable plate. A trapezoidal placement groove that cooperates with the sealing ball is provided at the upper end of the movable plate, and a telescopic spring is provided at the end of the movable plate away from the hollow tube, and a hemispherical protrusion that cooperates with the conical block is provided at the other end of the movable plate. A mounting ring is provided on the inner wall of the reactor body, and a sliding cavity that cooperates with the mounting plate is provided on the inner side of the mounting ring, and a sealing ring is provided on the inner wall of the sliding cavity.

[0009] As a further description of the above technical solution:

[0010] The auxiliary component includes a piston slidably arranged inside the hollow tube, a first one-way valve arranged inside the hollow tube and a limit ring arranged inside the hollow tube. The piston is located between the first one-way valve and the limit ring. The output end of the first one-way valve is connected to the upper part of the hollow tube. The lower end of the hollow tube passes through the mounting shell and a support rod is slidably provided in the middle of the side wall. Lifting rods are provided on both sides of the lower end of the support rod. A circle of raised blocks cooperating with the lifting rods is provided on the upper end of the fixed plate. A driving rod is provided in the middle of the lower end of the piston. The lower end of the driving rod is connected to the upper end of the support rod. A reset spring is sleeved in the middle of the driving rod, and the upper end of the reset spring is connected to the lower end face of the limit ring.

[0011] As a further description of the above technical solution:

[0012] The reflux assembly includes an insulation chamber opened in the middle of the side wall of the reactor body, a U-shaped tube provided at the upper end of the reactor body, and a serpentine reflux tube symmetrically provided in the middle of the hollow tube, wherein both ends of the U-shaped tube are respectively connected to the interior of the insulation chamber, and a connecting pipe is provided in the middle of the lower end of the U-shaped tube, the lower end of the connecting pipe passes through the hollow tube and is rotatably connected to the hollow tube through a sealed bearing, the input end and the output end of the serpentine reflux tube are both connected to the interior of the hollow tube, the output end of the serpentine reflux tube is provided with a second one-way valve, the lower end of the insulation chamber is provided with a plurality of reflux ports connected to the interior of the mounting shell, the lower end of the reactor body is symmetrically provided with two fans that cooperate with the reflux ports, the lower end of the reactor body is respectively provided with annular covers that cooperate with the two fans, the rotating shafts of the two fans pass through the middle of the fixed plate and are sleeved with driven gears, the middle of the hollow tube is sleeved with a transmission gear that cooperates with the driven gear, and the two driven gears are meshed with the transmission gear.

[0013] As a further description of the above technical solution:

[0014] The larger end of the conical block faces downward, and the middle parts of the upper ends of the two connecting covers are both provided with air supply ports.

[0015] As a further description of the above technical solution:

[0016] The inner diameter of the limiting ring is larger than the outer diameter of the driving rod.

[0017] As a further description of the above technical solution:

[0018] The piston is located between the input end and the output end of the serpentine reflux pipe, and the outer surface of the U-shaped pipe is wrapped with thermal insulation cotton.

[0019] As a further description of the above technical solution:

[0020] A collecting pipe is provided on one side of the installation shell, and an output end of the collecting pipe is connected to an external processing device.

[0021] A method for using a separation device for producing and processing metaphosphate, comprising the following steps:

[0022] S1. First, phosphorus pentoxide and cold water are added to the interior of the reactor body through a feed hopper along a feed pipe. The feed hopper is then sealed, and a drive motor is started to rotate the serpentine reflux pipe through a hollow pipe, so that the phosphorus pentoxide and cold water are mixed and reacted more fully. The phosphorus pentoxide and cold water initially react to produce metaphosphoric acid, which is easily soluble in water and produces toxic orthophosphoric acid.

[0023] S2. The heating layer is then activated to perform high-temperature dehydration of the orthophosphoric acid in the reactor body (further high-temperature dehydration of orthophosphoric acid will produce metaphosphoric acid), thereby increasing the air pressure inside the reactor body, lifting the sealing plate. The lifting of the sealing plate causes the movable plate to move through the connecting rod and the conical block. The movement of the movable plate compresses the telescopic spring, and the sealing ball moves downward under its own gravity, thereby connecting the collection hopper with the interior of the collection shell.

[0024] S3. Then, when the driving motor drives the hollow tube to work, the two driven gears are driven to rotate through the transmission gear, and the two driven gears rotate the two fans. The rotation of the two fans causes the water vapor generated inside the reactor body to pass through the hollow tube, the connecting tube and the U-shaped tube into the insulation chamber, and then be sucked into the installation shell. At the same time, the hot air collected in the installation shell will further pass through the hollow tube into the serpentine reflux pipe. The partially liquefied water vapor will pass through the collection pipe on one side of the installation shell and enter the external treatment device for treatment;

[0025] S4. Then, the hollow tube drives the support rod to move as it rotates, and the movement of the support rod drives the lifting rod to revolve. When the lifting rod revolves, it will continuously contact the protruding block, so that the lifting rod is lifted up, and the piston is further moved through the support rod and the driving rod. At this time, the return spring is compressed, and the upward movement of the piston will squeeze the gas inside the hollow tube out through the first one-way valve. When the lifting rod revolves and loses contact with the protruding block, the piston will move downward under the action of the return spring. The piston will quickly suck the serpentine return pipe into the hollow tube through the second one-way valve, accelerating the reflux circulation of the hot gas;

[0026] S5. After the high-temperature dehydration is completed, the staff adds metal into the reactor body, so that the acidic hydroxyl groups of the metaphosphoric acid undergo an oxidation-reduction reaction with the metal to produce metaphosphate, which is then discharged from the discharge port.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. In the present invention, the water vapor generated by high-temperature dehydration is recycled through the mutual cooperation of the driving component, the collecting component and the reflux component, thereby preventing the water vapor generated by the high-temperature dehydration of orthophosphoric acid from being directly released to the outside, solving the problem that the toxic gas generated by the high-temperature dehydration of orthophosphoric acid will be released along with the water vapor to pollute the environment, and further improving the energy utilization rate of the water vapor.

[0029] 2. In the present invention, the driving component and the auxiliary component cooperate with each other to accelerate the flow rate of water vapor, avoid low water vapor flow rate, and solve the problem that low water vapor flow rate is easy to accumulate.

[0030] 3. In the present invention, by providing a sealing plate, a connecting rod, a conical block, a movable plate and a sealing ball, the collecting hopper is initially in a sealed state, thereby preventing the collecting hopper from being in a connected state which would cause the gas in the reactor body to circulate, thereby solving the problem of slow temperature rise inside the reactor body caused by gas circulation inside the reactor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It shows the appearance of a separation device provided according to an embodiment of the present invention;

[0032] Figure 2 A schematic structural diagram of a separation device provided in an embodiment of the present invention is shown;

[0033] Figure 3 It shows a cross-sectional view of the upper half of the reactor body according to an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the internal structure of the installation shell provided according to an embodiment of the present invention is shown.

[0035] Legend: 1. Reactor body; 2. Heating layer; 3. Hollow tube; 4. Drive assembly; 401. Mounting shell; 402. Fixing plate; 403. Drive motor; 5. Collecting assembly; 501. Mounting plate; 502. Collecting shell; 503. Collecting hopper; 504. Movable plate; 505. Steel ball; 506. Telescopic spring; 507. Hemispherical bump; 508. Connecting cover; 509. Sealing plate; 510. Connecting rod; 511. Conical block; 512, mounting ring; 513, sealing ball; 6, auxiliary assembly; 601, piston; 602, first one-way valve; 603, driving rod; 604, supporting rod; 605, reset spring; 606, lifting rod; 7, reflux assembly; 701, insulation chamber; 702, U-shaped tube; 703, connecting tube; 704, serpentine reflux tube; 705, fan; 706, annular cover; 707, driven gear; 708, transmission gear. DETAILED DESCRIPTION

[0036] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1 - Figure 4 , the present invention provides a technical solution:

[0038] A separation device and method for the production and processing of metaphosphate, comprising a reactor body 1 and a heating layer 2 provided on the inner wall of the reactor body 1. A feed pipe is provided at the upper end of one side of the reactor body 1, a feed hopper is provided at the input end of the feed pipe, a discharge port is provided at one side of the lower end of the reactor body 1, a hollow tube 3 is rotatably provided in the middle of the reactor body 1, a drive assembly 4 is provided at the lower end of the reactor body 1 and cooperates with the hollow tube 3, a collection assembly 5 is provided in the middle of the hollow tube 3, a reflux assembly 7 is provided in the middle of the reactor body 1, and an auxiliary assembly 6 is provided inside the hollow tube 3;

[0039] The drive assembly 4 includes a mounting shell 401 disposed at the lower end of the reactor body 1, a fixing plate 402 disposed inside the mounting shell 401, and a drive motor 403 disposed in the middle of the lower end of the mounting shell 401. The lower end of the hollow tube 3 passes through the mounting shell 401 and is connected to the output end of the drive motor 403.

[0040] The collecting assembly 5 includes a mounting plate 501 sleeved on the middle of the hollow tube 3 and two collecting shells 502 symmetrically arranged on the outside of the hollow tube 3. The two collecting shells 502 are located below the mounting plate 501. Two connecting covers 508 are symmetrically provided on the upper end of the mounting plate 501. Ventilation holes connected to the interior of the two connecting covers 508 are respectively opened in the middle of the mounting plate 501. Sealing plates 509 are slidingly provided inside the two connecting covers 508. Connecting rods 510 are provided in the middle of the lower ends of the two sealing plates 509. The lower ends of the two connecting rods 510 are respectively movably penetrated into the two collecting shells 502 and are provided with conical blocks 511. A plurality of collecting buckets 503 are evenly distributed on the upper ends of the two collecting shells 502. The lower ends of the plurality of collecting buckets 503 are The ends are connected with the interior of the collecting shell 502, and the lower ends of the interiors of multiple collecting buckets 503 are provided with sealing balls 513. A movable plate 504 is slidingly provided inside the collecting shell 502. The upper and lower end surfaces of the movable plate 504 are embedded with two steel balls 505 that cooperate with the inner wall of the collecting shell 502. The upper end of the movable plate 504 is provided with a trapezoidal placement groove that cooperates with the sealing ball 513. The movable plate 504 is provided with a telescopic spring 506 at the end away from the hollow tube 3, and a hemispherical protrusion 507 that cooperates with the conical block 511 at the other end of the movable plate 504. The inner wall of the reactor body 1 is provided with a mounting ring 512, and the inner side of the mounting ring 512 is provided with a circle of sliding cavity that cooperates with the mounting plate 501, and the inner wall of the sliding cavity is provided with a sealing ring.

[0041] Furthermore, the auxiliary component 6 includes a piston 601 slidably arranged inside the hollow tube 3, a first one-way valve 602 arranged inside the hollow tube 3 and a limit ring arranged inside the hollow tube 3. The piston 601 is located between the first one-way valve 602 and the limit ring. The output end of the first one-way valve 602 is connected to the upper part of the interior of the hollow tube 3. The lower end of the hollow tube 3 passes through the mounting shell 401 and a support rod 604 is slidably provided in the middle of the side wall. Lifting rods 606 are provided on both sides of the lower end of the support rod 604. A circle of raised blocks cooperating with the lifting rods 606 is provided on the upper end of the fixing plate 402. A driving rod 603 is provided in the middle of the lower end of the piston 601. The lower end of the driving rod 603 is connected to the upper end of the support rod 604. A return spring 605 is sleeved on the middle part of the rod 603, and the upper end of the return spring 605 is connected to the lower end face of the limit ring; in actual application, when the lifting rod 606 contacts the protruding block and is lifted up, the support rod 604 moves upward to squeeze the return spring 605, so that the return spring 605 is compressed, and then the piston 601 moves upward through the driving rod 603, and the gas in the hollow tube 3 is squeezed out from the first one-way valve 602. When the lifting rod 606 is out of contact with the protruding block, the support rod 604 moves downward under the action of the return spring 605, and then the piston 601 moves downward through the driving rod 603, and the gas in the serpentine reflux pipe 704 is sucked into the hollow tube 3 through the second one-way valve.

[0042] Furthermore, the reflux assembly 7 includes a heat preservation chamber 701 provided in the middle of the side wall of the reactor body 1, a U-shaped tube 702 provided at the upper end of the reactor body 1, and a serpentine reflux pipe 704 symmetrically provided in the middle of the hollow tube 3. The two ends of the U-shaped tube 702 are respectively connected to the interior of the heat preservation chamber 701. A connecting pipe 703 is provided in the middle of the lower end of the U-shaped tube 702. The lower end of the connecting pipe 703 passes through the hollow tube 3 and is rotatably connected to the hollow tube 3 through a sealing bearing. The input and output ends of the serpentine reflux pipe 704 are both connected to the interior of the hollow tube 3. The output end of the serpentine reflux pipe 704 is provided with a second one-way valve. The lower end of the heat preservation chamber 701 is provided with a plurality of reflux ports connected to the interior of the mounting shell 401. Two fans 705 that cooperate with the reflux port are symmetrically rotated at the lower end of the body 1. An annular cover 706 that cooperates with the two fans 705 is respectively provided at the lower end of the reactor body 1. The rotating shafts of the two fans 705 pass through the middle of the fixed plate 402 and are sleeved with a driven gear 707. The middle part of the hollow tube 3 is sleeved with a transmission gear 708 that cooperates with the driven gear 707. The two driven gears 707 and the transmission gear 708 are meshed with each other; in actual application, the two driven gears 707 are rotated by rotating the transmission gear 708, and the two driven gears 707 are rotated to rotate the fan 705. The rotation of the fan 705 sucks the air inside the insulation chamber 701 into the mounting shell 401.

[0043] Furthermore, the larger end of the conical block 511 faces downward, and an air supply port is opened in the middle of the upper end of the two connecting covers 508; in actual application, the upward movement of the conical block 511 will squeeze and drive the movable plate 504 to move, so that the lower end of the collecting bucket 503 is connected to the inside of the collecting shell 502.

[0044] Furthermore, the inner diameter of the limiting ring is larger than the outer diameter of the driving rod 603 ; in practical applications, the gas can pass through the hollow tube 3 into the interior of the serpentine return pipe 704 .

[0045] Furthermore, the piston 601 is located between the input end and the output end of the serpentine return pipe 704, and the outer surface of the U-shaped tube 702 is wrapped with insulation cotton; in actual application, the exposed U-shaped tube 702 is insulated.

[0046] Furthermore, a collecting pipe is provided on one side of the mounting shell 401, and the output end of the collecting pipe is connected to an external processing device; in actual application, the toxic gas or water produced by liquefaction of water vapor is introduced into the external processing device through the collecting pipe for treatment.

[0047] Working Principle: When in use, phosphorus pentoxide and cold water are first added into the reactor body 1 through the feed hopper along the feed pipe. The feed hopper is then sealed and the drive motor 403 is started to rotate the serpentine reflux pipe 704 through the hollow pipe 3, so that the phosphorus pentoxide and cold water are mixed and reacted more fully. The phosphorus pentoxide and cold water initially react to produce metaphosphoric acid, which is easily soluble in water and produces toxic orthophosphoric acid.

[0048] The heating layer is then activated to perform high-temperature dehydration of the orthophosphoric acid inside the reactor body 1 (further high-temperature dehydration of orthophosphoric acid will produce metaphosphoric acid), causing the air pressure inside the reactor body 1 to increase, causing the sealing plate 509 to be lifted. The lifting of the sealing plate 509 causes the movable plate 504 to move through the connecting rod 510 and the conical block 511. The movement of the movable plate 504 compresses the telescopic spring 506, and then the sealing ball 513 moves downward under its own weight, causing the collection hopper 503 to communicate with the interior of the collection shell 502.

[0049] Then, when the driving motor 403 drives the hollow tube 3 to work, the two driven gears 707 are driven to rotate through the transmission gear 708. The two driven gears 707 rotate the two fans 705. The rotation of the two fans 705 causes the water vapor generated inside the reactor body 1 to pass through the hollow tube 3, the connecting tube 703 and the U-shaped tube 702 into the heat preservation chamber 701, and then be sucked into the installation shell 401. At the same time, the hot air collected in the installation shell 401 will further pass through the hollow tube 3 and enter the serpentine return pipe 704. The partially liquefied water vapor will enter the external treatment device through the collection pipe on the side of the installation shell 401 for treatment.

[0050] Then, the hollow tube 3 drives the support rod 604 to move when it rotates, and the movement of the support rod 604 drives the lifting rod 606 to revolve. When the lifting rod 606 revolves, it will continuously contact the protruding block, so that the lifting rod 606 is lifted up, and the piston 601 is further moved through the support rod 604 and the driving rod 603. At this time, the return spring 605 is compressed, and the upward movement of the piston 601 will squeeze the gas inside the hollow tube 3 out through the first one-way valve 602. When the lifting rod 606 revolves and disengages from the protruding block, the piston 601 will move downward under the action of the return spring 605, and the piston 601 will quickly suck the serpentine return pipe 704 into the hollow tube 3 through the second one-way valve, thereby accelerating the reflux circulation of the hot gas.

[0051] After the high-temperature dehydration is completed, the staff adds metal into the reactor body 1, so that the acidic hydroxyl groups of the metaphosphoric acid undergo an oxidation-reduction reaction with the metal to produce metaphosphate, which is then discharged from the discharge port.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A separation device for the production and processing of metaphosphate, comprising a reactor body (1) and a heating layer (2) arranged on the inner wall of the reactor body (1), wherein a feed pipe is arranged at the upper end of one side of the reactor body (1), a feed hopper is arranged at the input end of the feed pipe, and a discharge port is arranged at one side of the lower end of the reactor body (1), characterized in that: A hollow tube (3) is rotatably provided in the middle of the reactor body (1); a driving component (4) cooperating with the hollow tube (3) is provided at the lower end of the reactor body (1); a collecting component (5) is provided in the middle of the hollow tube (3); a reflux component (7) is provided in the middle of the reactor body (1); and an auxiliary component (6) is provided inside the hollow tube (3); The driving assembly (4) comprises a mounting shell (401) arranged at the lower end of the reactor body (1), a fixing plate (402) arranged inside the mounting shell (401), and a driving motor (403) arranged at the middle of the lower end of the mounting shell (401); the lower end of the hollow tube (3) penetrates into the mounting shell (401) and is connected to the output end of the driving motor (403); The collecting assembly (5) comprises a mounting plate (501) sleeved on the middle of the hollow tube (3) and two collecting shells (502) symmetrically arranged on the outside of the hollow tube (3); the two collecting shells (502) are located below the mounting plate (501); two connecting covers (508) are symmetrically arranged on the upper end of the mounting plate (501); the middle of the mounting plate (501) is respectively provided with air vents connected to the inside of the two connecting covers (508); sealing plates (509) are slidably arranged inside the two connecting covers (508); connecting rods (510) are respectively arranged at the middle of the lower ends of the two sealing plates (509); the lower ends of the two connecting rods (510) are respectively movably penetrated into the two collecting shells (502) and are provided with conical blocks (511); a plurality of collecting buckets (503) are evenly arranged on the upper ends of the two collecting shells (502); the lower ends of the plurality of collecting buckets (503) are respectively provided with a plurality of collecting buckets (503); The ends are all connected to the interior of the collection shell (502), the lower ends of the multiple collection buckets (503) are each provided with a sealing ball (513), a movable plate (504) is slidably provided inside the collection shell (502), the upper and lower end surfaces of the movable plate (504) are each embedded with two steel balls (505) that match the inner wall of the collection shell (502), the upper end of the movable plate (504) is provided with a trapezoidal placement groove that matches the sealing ball (513), the end of the movable plate (504) away from the hollow tube (3) is provided with a telescopic spring (506), the other end of the movable plate (504) is provided with a hemispherical protrusion (507) that matches the conical block (511), the inner wall of the reactor body (1) is provided with a mounting ring (512), the inner side of the mounting ring (512) is provided with a circle of sliding cavity that matches the mounting plate (501), and the inner wall of the sliding cavity is provided with a sealing ring; The auxiliary component (6) comprises a piston (601) slidably arranged inside the hollow tube (3), a first one-way valve (602) arranged inside the hollow tube (3), and a limit ring arranged inside the hollow tube (3); the piston (601) is located between the first one-way valve (602) and the limit ring; the output end of the first one-way valve (602) is connected to the upper part of the hollow tube (3); the lower end of the hollow tube (3) penetrates into the mounting shell (401) and a support rod is slidably arranged in the middle of the side wall (604), lifting rods (606) are provided on both sides of the lower end of the support rod (604), a circle of raised blocks matching with the lifting rods (606) are provided on the upper end of the fixing plate (402), a driving rod (603) is provided in the middle of the lower end of the piston (601), the lower end of the driving rod (603) is connected to the upper end of the support rod (604), a return spring (605) is sleeved in the middle of the driving rod (603), and the upper end of the return spring (605) is connected to the lower end surface of the limiting ring; The reflux assembly (7) comprises a heat preservation chamber (701) provided in the middle of the side wall of the reactor body (1), a U-shaped tube (702) provided at the upper end of the reactor body (1), and a serpentine reflux tube (704) symmetrically provided in the middle of the hollow tube (3), wherein both ends of the U-shaped tube (702) are respectively connected to the interior of the heat preservation chamber (701), a connecting tube (703) is provided in the middle of the lower end of the U-shaped tube (702), the lower end of the connecting tube (703) penetrates into the hollow tube (3) and is rotatably connected to the hollow tube (3) via a sealing bearing, the input end and the output end of the serpentine reflux tube (704) are both connected to the interior of the hollow tube (3), and the output end of the serpentine reflux tube (704) is connected to the interior of the hollow tube (3). A second one-way valve is provided. The lower end of the heat preservation chamber (701) is provided with a plurality of reflux ports which are connected to the interior of the mounting shell (401). The lower end of the reactor body (1) is provided with two fans (705) which are symmetrically rotatable and match the reflux ports. The lower end of the reactor body (1) is provided with annular covers (706) which match the two fans (705). The rotating shafts of the two fans (705) pass through the middle of the fixing plate (402) and are sleeved with driven gears (707). The middle part of the hollow tube (3) is sleeved with a transmission gear (708) which matches the driven gear (707). The two driven gears (707) and the transmission gear (708) are meshed with each other.

2. A separation device for the production and processing of metaphosphate according to claim 1, characterized in that: The larger end of the conical block (511) faces downwards, and a gas supply port is provided in the middle of the upper ends of the two connecting covers (508).

3. A separation device for the production and processing of metaphosphate according to claim 1, characterized in that: The inner diameter of the limiting ring is greater than the outer diameter of the driving rod (603).

4. A separation device for the production and processing of metaphosphate according to claim 1, characterized in that: The piston (601) is located between the input end and the output end of the serpentine reflux pipe (704), and the outer surface of the U-shaped tube (702) is wrapped with thermal insulation cotton.

5. A separation device for the production and processing of metaphosphate according to claim 1, characterized in that: A collecting pipe is provided on one side of the installation shell (401), and an output end of the collecting pipe is connected to an external processing device.

6. A method for using a separation device for producing and processing metaphosphate according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. First, phosphorus pentoxide and cold water are added into the reactor body (1) through a feed hopper and a feed pipe, and then the feed hopper is sealed, and a drive motor (403) is started to drive the serpentine reflux pipe (704) to rotate through a hollow pipe (3), so that the phosphorus pentoxide and the cold water are mixed and reacted more fully. The phosphorus pentoxide and the cold water initially react to produce metaphosphoric acid, which is easily soluble in water and produces toxic orthophosphoric acid; S2, then starting the heating layer to perform high-temperature dehydration of the orthophosphoric acid inside the reactor body (1) (further high-temperature dehydration of the orthophosphoric acid will generate metaphosphoric acid), so that the air pressure inside the reactor body (1) increases, so that the sealing plate (509) is lifted, and the lifting of the sealing plate (509) causes the movable plate (504) to move through the connecting rod (510) and the conical block (511), and the movement of the movable plate (504) causes the telescopic spring (506) to be compressed, and then the sealing ball (513) moves downward under its own weight, so that the collecting bucket (503) is connected to the inside of the collecting shell (502); S3, when the driving motor (403) drives the hollow tube (3) to work, the transmission gear (708) drives the two driven gears (707) to rotate, and the two driven gears (707) cause the two fans (705) to rotate. The rotation of the two fans (705) causes the water vapor generated inside the reactor body (1) to pass through the hollow tube (3), the connecting tube (703) and the U-shaped tube (702) into the heat preservation chamber (701) and then be sucked into the installation shell (401). At the same time, the hot air collected in the installation shell (401) will further pass through the hollow tube (3) into the serpentine reflux tube (704), and the partially liquefied water vapor will pass through the collection tube on one side of the installation shell (401) and enter the external processing device for processing; S4, when the hollow tube (3) rotates, the support rod (604) drives the movement of the support rod (604), which drives the lifting rod (606) to revolve. When the lifting rod (606) revolves, it will continuously contact the protruding block, so that the lifting rod (606) is lifted up, and the piston (601) is further moved through the support rod (604) and the driving rod (603). At this time, the return spring (605) is compressed, and the upward movement of the piston (601) will squeeze the gas inside the hollow tube (3) out through the first one-way valve (602). When the lifting rod (606) revolves and loses contact with the protruding block, the piston (601) moves downward under the action of the return spring (605), and the piston (601) will quickly suck the serpentine return pipe (704) into the hollow tube (3) through the second one-way valve, thereby accelerating the reflux cycle of the hot gas; S5. After the high-temperature dehydration is completed, metal is added into the reactor body (1) to cause the acidic hydroxyl groups of the metaphosphoric acid to undergo an oxidation-reduction reaction with the metal to produce metaphosphate, which is then discharged from the discharge port.

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