A production device for preparing hydrogen fluoride and a method of using the same

Abstract

The invention relates to the technical field of fluorine chemical industry, and in particular to a production device for preparing hydrogen fluoride and a method for using the same. The production device comprises a base and a reactor. The reactor is provided with a conveying pipe, a first rotating shaft, a rotating driver, spiral blades, a feeding pipe, a mixing chamber and a heating chamber. A slag outlet is provided at the bottom of the mixing chamber, a return port is provided at the upper side of one end of the mixing chamber close to the spiral blade, a limiting track is provided outside the reactor, a rotating frame is rotatably installed outside the reactor, the rotating frame is coaxially arranged with the reactor, two collecting boxes are provided on the rotating frame, the collecting boxes are slidably installed in the limiting track and fit at the slag outlet and the return port, a linear driving unit and a rotating driving unit are provided on the rotating frame, and the technical scheme rotates and moves the two collecting boxes in the limiting track outside the reactor to exchange positions, so that the slag is quickly moved from the furnace tail of the reactor to the furnace head, the transmission speed is fast, the temperature of the slag is retained, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluorine chemical industry, and in particular to a production device for preparing hydrogen fluoride and a use method thereof. Background Art

[0002] Hydrogen fluoride is an inorganic compound. Under normal conditions, it is a colorless, pungent, toxic gas. It has very strong hygroscopicity and produces white smoke when it comes into contact with air. It is easily soluble in water and can be infinitely miscible with water to form hydrofluoric acid. The aqueous solution of hydrogen fluoride is a colorless, easy-to-flow liquid that emits smoke in the air. It is highly corrosive and toxic and can corrode glass and carbon steel equipment. Therefore, a large number of carbon steel equipment are corroded and damaged during the production of hydrogen fluoride. When the mixture of fluorite powder and concentrated sulfuric acid reaches the other end of the hydrogen fluoride reactor, it is basically converted into tailings, a byproduct of the reaction between the two. The tailings are discharged through the slag discharge spiral.

[0003] In order to make the tailings react fully again, a traditional hydrogen fluoride reactor is equipped with a slag return spiral. The slag return spiral is generally tubular, and the spiral blades provided on the slag return spiral tube are used to push the tailings back to the furnace head for further reaction. Since the slag return tube is set at the center of the hydrogen fluoride reactor, the transmission rate is slow and it cannot be heated, resulting in a low temperature of the tailings when it returns to the furnace head, affecting the efficiency of the reaction. Summary of the invention

[0004] In view of the above problems, it is necessary to provide a production equipment for preparing hydrogen fluoride and a method for using the same in view of the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A production equipment for preparing hydrogen fluoride comprises a base and a reactor horizontally mounted on the base, a conveying pipe is coaxially arranged at one end of the reactor, a first rotating shaft is rotatably mounted in the conveying pipe, a rotating driver for driving the first rotating shaft to rotate around its own axis is arranged outside the reactor, a spiral blade combined with the inner wall of the conveying pipe is arranged on the circumference of the first rotating shaft, a vertically extending feeding pipe is arranged on the upper side of the conveying pipe, a mixing chamber and a heating chamber surrounding the outside of the mixing chamber are arranged in the reactor, the conveying pipe is connected to the mixing chamber, the spiral blade extends into the mixing chamber, the mixing chamber is away from one end of the conveying pipe, a slag outlet is arranged at the bottom, an air outlet pipe is arranged on the upper side, a return port is arranged on the upper side of one end of the mixing chamber close to the spiral blade, a material receiving baffle is arranged below the return port in the mixing chamber, the material receiving baffle is located below the spiral blade and extends obliquely above both sides; a limiting track is arranged outside the reactor, the limiting track The track includes arc rails respectively arranged at both ends of the reactor, and two straight rails extending along the axis direction of the reactor, the arc rails respectively start from the slag outlet and the return material outlet and extend around the outer wall of the reactor in the same direction, and the two straight rails respectively connect the head and tail ends of the two arc rails; a rotating frame is rotatably installed outside the reactor, the rotating frame is coaxially arranged with the reactor, two collecting boxes are arranged on the rotating frame, the collecting boxes have an arc-shaped receiving port that fits the outer wall of the reactor, the collecting boxes are slidably installed in the limiting track, and the two arc-shaped receiving ports are respectively fitted on the outside of the slag outlet and the return material outlet; a linear driving unit is arranged on the rotating frame, the linear driving unit drives the two collecting boxes to move synchronously in opposite directions along the linear rails of the limiting track, and a rotating driving unit is arranged on the rotating frame, the rotating driving unit drives the rotating frame to rotate around the axis of the reactor to drive the collecting boxes to move synchronously along the arc-shaped rails of the limiting track.

[0007] Preferably, the first rotating shaft of the reactor is coaxially connected to the second rotating shaft, the second rotating shaft extends to the outside of the reactor, and a plurality of stirring blades are arranged on the second rotating shaft, the stirring blades extend radially along the second rotating shaft and are evenly spaced along the axial direction of the second rotating shaft, and a material lifting scraper is arranged at one end of the stirring blade away from the second rotating shaft, and the material lifting scraper is in contact with the inner wall of the mixing chamber.

[0008] Preferably, the reactor is provided with horizontally extending side sockets on one side of the slag outlet and the return material outlet facing the outer end of the reactor, and sealing plug plates for sealing the slag outlet and the return material outlet are slidably installed in the side sockets, and the sealing plug plates extend along the axial direction of the reactor, and the width of the sealing plug plates is greater than the width of the slag outlet and the return material outlet.

[0009] Preferably, the rotating frame includes annular frames sleeved on both ends of the outside of the reactor, the annular frames are connected by two horizontal connecting brackets, and the connecting brackets are provided with waist-shaped limiting holes extending along their own length directions; a connecting block is provided on the collecting box, and a plug rod extending radially along the reactor is provided on the connecting block, the plug rod is inserted in the waist-shaped limiting hole, and the diameter of the plug rod is the same as the width of the waist-shaped limiting hole; the linear drive unit includes a mounting seat connecting the two annular frames along the axial direction of the reactor, and a conveyor belt is installed on the mounting seat, and one end of the connecting rod is fixedly connected to the upper and lower working surfaces of the conveyor belt respectively, and the connecting rod is located at both ends of the conveyor belt, and the other end of the connecting rod is connected to the slider, and the slider is slidably installed on the connecting bracket, and the plug rod of the collecting box is inserted in the slider.

[0010] Preferably, at least one plug hole parallel to the axis of the reaction furnace is respectively provided at both ends of the collecting box in the horizontal direction, and connecting plugs which are in the same straight line as the plug hole are provided at both ends of the connecting bracket.

[0011] Preferably, the rotation drive unit includes a first rotating drum and a second rotating drum coaxially arranged at one end of the reactor, the first rotating drum is coaxially connected to the second rotating shaft through a sleeve at the axis and rotates synchronously with the second rotating shaft, the second rotating drum is sleeved outside the first rotating drum and rotates in the opposite direction to the first rotating drum along the axis of the first rotating drum; the length of the first rotating drum in the axial direction is greater than the length of the second rotating drum in the axial direction; a connector is provided at one end of the rotating frame close to the first rotating drum and the second rotating drum, and the rotating frame is connected to the first rotating drum and the second rotating drum of the rotation drive unit through the connector.

[0012] Preferably, a first annular tooth groove surrounding the outer wall is provided at one end of the first rotating drum close to the reaction furnace, and a second annular tooth groove surrounding the inner wall is provided at one end of the second rotating drum close to the reaction furnace. The rotary drive unit also includes a plurality of transmission gears, which are rotatably installed at one end of the reaction furnace close to the first rotating drum, and the axis of the transmission gear is parallel to the axis of the first rotating drum. The first rotating drum and the second rotating drum are respectively meshed and connected with the transmission gear through the first annular tooth groove and the second annular tooth groove.

[0013] Preferably, the first drum is provided with a plurality of first side plates, the first side plates protrude from the outer wall of the first drum and are distributed at equal angles around the outer wall of the first drum; the second drum is provided with a plurality of second side plates, the second side plates protrude from the outer wall of the second drum and are distributed at equal angles around the outer wall of the second drum; the connector includes a flat plate bracket extending above the first drum and the second drum, the flat plate bracket is provided with two linear drives, the working end of the linear drive moves radially along the first drum, a lifting plate is fixedly connected to the working end of the linear drive, the lifting plates connected by the two linear drives are respectively located on the circumferential sides of the first drum and the second drum, a resistance block is provided on the side of the lifting plate facing the first drum and the second drum, the first side plate of the first drum and the second side plate of the second drum are in contact with the side of the resistance block, driving the rotating frame and the collecting box to rotate and move.

[0014] Preferably, a plurality of conical slots are provided at one end of the second rotating shaft connected to the mounting seat, the conical slots extend along the axial direction of the second rotating shaft and surround the circumference of the second rotating shaft, and the longitudinal section of the conical slots is "V"-shaped; the inner wall of the sleeve fits the outer wall of the second rotating shaft, and the interior of the sleeve is provided with inner mounting holes with the same number as the conical slots, and the inner mounting holes are provided with a clamping block and a plurality of springs, the clamping block is slidably installed in the inner mounting hole, the spring elastically connects the clamping block and the top of the inner mounting hole, and the elastic force of the spring causes the clamping block to be inserted into the conical slot.

[0015] A method for using a production device for preparing hydrogen fluoride, applied to a production device for preparing hydrogen fluoride, comprises the following steps:

[0016] Step 1: transporting raw materials for hydrogen fluoride production into a transport pipe of a reaction furnace through a feed pipe, and a rotary driver drives a spiral blade to rotate to move the raw materials into a mixing chamber;

[0017] Step 2: The hydrogen fluoride gas generated by the raw materials entering the mixing chamber is discharged from the gas outlet pipe, and the slag moves to the slag outlet and falls into the collection box through the slag outlet;

[0018] Step 3: After the collecting box collects a certain amount of slag, the linear drive unit drives the collecting box to move along the linear track of the limiting track to the arc track at the other end of the reactor. The rotary drive unit drives the collecting box to move along the arc track to the return port of the reactor. The collecting box is inverted so that the slag inside falls into the receiving baffle and mixes with the raw materials transported by the rotary drive and enters the mixing chamber again for reaction.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Firstly, the present invention rotates and moves two collecting boxes in a limiting track outside the reactor to exchange positions, so as to quickly move the slag from the tail of the reactor to the head of the reactor, with a fast transmission speed, thereby retaining the temperature of the slag. After the slag re-enters the mixing chamber, it is mixed with the raw materials to react, thereby improving the production efficiency.

[0021] Secondly, the collecting box of the present invention is connected to a rotating frame, and a linear driving unit on the rotating frame drives the collecting box to move along a linear rail. The rotating driving unit connected to the second rotating shaft in the reactor drives the collecting box to rotate in an arc rail. The first rotating drum and the second rotating drum of the rotating driving unit have opposite rotation directions. The first rotating drum and the second rotating drum cooperate with the connector of the rotating frame to drive the rotating frame and the collecting box to rotate in opposite directions, thereby causing the rotating frame to rotate back and forth one hundred and eighty degrees, thereby avoiding entanglement of the connecting wires of the electrical components installed on the rotating frame.

[0022] Thirdly, the first rotating drum in the present invention is connected to the second rotating shaft through a sleeve transmission, and a clamping block is elastically installed in the inner mounting hole arranged inside the sleeve, and is inserted into the conical slot of the second rotating shaft under the elastic force of the spring, so as to realize the synchronous rotation of the second rotating shaft and the first rotating drum. When the rotating frame rotates one hundred and eighty degrees, the collecting box is limited by the arc rail so that the rotating frame cannot rotate. At this time, the clamping block compresses the spring into the inner mounting hole under the pressure of the conical slot, so that there is no need to start and stop the rotating drive, and it will not affect the working end of the rotating drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a production apparatus for preparing hydrogen fluoride;

[0024] Figure 2 is a top view of a production equipment for preparing hydrogen fluoride;

[0025] Figure 3 yes Figure 2 Cross-sectional view at AA of FIG.

[0026] Figure 4 yes Figure 3 The enlarged view of the part after rotating 90 degrees clockwise at point B;

[0027] Figure 5 is a front view of a production equipment for preparing hydrogen fluoride;

[0028] Figure 6 yes Figure 5 A cross-sectional view of the section at CC;

[0029] Figure 7 yes Figure 5 Cross-sectional view at DD of FIG.

[0030] Figure 8yes Figure 5 A cross-sectional view at EE of FIG.

[0031] Fig. 9 yes Figure 5 A cross-sectional view at FF of FIG.

[0032] Fig.10 yes Fig. 9 A local enlarged view of point G;

[0033] Fig.11 A three-dimensional structural decomposition of a production equipment for preparing hydrogen fluoride Figure 1 ;

[0034] Fig.12 A three-dimensional structural decomposition of a production equipment for preparing hydrogen fluoride Figure 2 ;

[0035] Fig.13 yes Fig.12 A partial enlarged view of point H.

[0036] The numbers in the figure are: 1, base; 2, reaction furnace; 21, conveying pipe; 211, first rotating shaft; 212, rotating driver; 213, spiral blade; 214, feeding pipe; 22, mixing chamber; 221, air outlet pipe; 222, receiving baffle; 23, heating chamber; 24, slag outlet; 25, return outlet; 26, limit rail; 261, linear rail; 262, arc rail; 27, second rotating shaft; 271, stirring blade; 272, lifting scraper; 273, conical slot; 28, side plug hole; 281, plugging plug plate; 3, rotating frame; 31, linear drive unit; 311, mounting seat; 312, conveyor belt; 313, connecting rod; 3 14. Slider; 32. Ring frame; 33. Connecting bracket; 331. Waist-shaped limiting hole; 332. Connecting plug; 34. Connector; 341. Flat bracket; 342. Linear drive; 343. Lifting plate; 344. Resistance block; 4. Collecting box; 41. Arc-shaped material receiving port; 42. Connecting block; 421. Insert rod; 422. Socket; 5. Rotary drive unit; 51. First rotating drum; 511. Sleeve; 512. First annular tooth groove; 513. First side plate; 514. Inner mounting hole; 515. Clamping block; 516. Spring; 52. Second rotating drum; 521. Second annular tooth groove; 522. Second side plate; 53. Transmission gear. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Reference Figures 1 to 11 :

[0039] A production device for preparing hydrogen fluoride comprises a base 1 and a reactor 2 horizontally mounted on the base 1, a delivery pipe 21 is coaxially arranged at one end of the reactor 2, a first rotating shaft 211 is rotatably mounted in the delivery pipe 21, a rotating driver 212 for driving the first rotating shaft 211 to rotate around its own axis is arranged outside the reactor 2, a spiral blade 213 combined with the inner wall of the delivery pipe 21 is arranged on the periphery of the first rotating shaft 211, a vertically extending feed pipe 214 is arranged on the upper side of the delivery pipe 21, a mixing chamber 22 is arranged in the reactor 2, and a first rotating shaft 211 is arranged around the first rotating shaft 211. The heating chamber 23 outside the mixing chamber 22, the conveying pipe 21 is connected to the mixing chamber 22, the spiral blade 213 extends into the mixing chamber 22, the mixing chamber 22 is far from the conveying pipe 21, and the bottom is provided with a slag outlet 24, and the upper side is provided with an air outlet pipe 221, and the upper side of the mixing chamber 22 is close to the spiral blade 213. The upper side of the end of the mixing chamber 22 is provided with a return port 25, and the mixing chamber 22 is provided with a material receiving baffle 222 below the return port 25. The material receiving baffle 222 is located below the spiral blade 213 and extends obliquely upward on both sides; a limited position rail is provided outside the reactor 2 The limiting track 26 includes an arc track 262 respectively arranged at both ends of the reaction furnace 2, and two straight track 261 extending along the axis direction of the reaction furnace 2. The arc track 262 takes the slag outlet 24 and the return material outlet 25 as starting points and extends around the outer wall of the reaction furnace 2 in the same direction. The two straight track 261 connects the head and tail ends of the two arc tracks 262 respectively. A rotating frame 3 is rotatably installed outside the reaction furnace 2. The rotating frame 3 is coaxially arranged with the reaction furnace 2. Two collecting boxes 4 are arranged on the rotating frame 3. The collecting boxes 4 have a shape that fits the reaction furnace 2. An arc-shaped material receiving opening 41 on the outer wall of the furnace 2, and a collecting box 4 are slidably installed in the limiting track 26, and the two arc-shaped material receiving openings 41 are respectively attached to the outside of the slag outlet 24 and the return material opening 25; a linear driving unit 31 is provided on the rotating frame 3, and the linear driving unit 31 drives the two collecting boxes 4 to move synchronously in opposite directions along the linear rail 261 of the limiting track 26; a rotating driving unit 5 is provided on the rotating frame 3, and the rotating driving unit 5 drives the rotating frame 3 to rotate around the axis of the reaction furnace 2 to drive the collecting box 4 to move synchronously along the arc rail 262 of the limiting track 26.

[0040] When the hydrogen fluoride production equipment in this embodiment is in use, the raw materials for hydrogen fluoride production are transported into the conveying pipe 21 of the reactor 2 through the feed pipe 214, and the rotary driver 212 drives the spiral blade 213 to rotate to move the raw materials into the mixing chamber 22; the rotary driver 212 can be a servo motor, and high-temperature gas can be rushed into the heating chamber 23 to heat the mixing chamber 22 to meet the production conditions of hydrogen fluoride. The hydrogen fluoride gas generated by the raw materials entering the mixing chamber 22 is discharged from the gas outlet pipe 221, and the slag is located at the bottom of the mixing chamber 22 and moves to the slag outlet 24, and finally falls into the collection box 4 through the slag outlet 24; in this embodiment, two collection boxes 4 are provided, one is located below the slag outlet 24, the arc-shaped material receiving port 41 of the collection box 4 upwardly fits the outer wall of the slag outlet 24, and the slag outlet 24 is sealed to prevent the hydrogen fluoride gas in the mixing chamber 22 from leaking, and the arc-shaped material receiving port 41 of the other collection box 4 downwardly fits the outer wall of the return port 25, and the two collection boxes 4 are The collecting box 4 is slidably installed in the limiting track 26 outside the reactor 2. After the collecting box 4 located at the slag outlet 24 collects a certain amount of slag, the linear drive unit 31 drives the collecting box 4 to move along the linear track 261 of the limiting track 26 to the arc track 262 at the other end of the reactor 2. The rotary drive unit 5 drives the collecting box 4 to move along the arc track 262 to the return port 25 of the reactor 2. The collecting box 4 is inverted so that the internal slag falls into the material receiving baffle 222 and is mixed with the raw material transported by the rotary driver 212, and enters the mixing chamber 22 again for reaction. The collecting box 4 originally located at the return port 25 is now moved to the slag outlet 24 to collect the slag generated in subsequent production. In this embodiment, the two collecting boxes 4 are rotated and moved in the limiting track 26 to exchange positions, so that the slag is quickly moved from the tail of the reactor 2 to the head of the furnace, and the transmission speed is fast, thereby retaining the temperature of the slag. After the slag re-enters the mixing chamber 22, it is mixed with the raw material for reaction, thereby improving the production efficiency. The slag outlet 24 and the return material port 25 in this embodiment are located at the connection between the arc rail 262 and the straight rail 261. The arc rail 262 and the straight rail 261 can locate the position of the collecting box 4 to ensure that when the collecting box 4 moves to the connection between the arc rail 262 and the straight rail 261, it is located at the slag outlet 24 and the return material port 25. The arc-shaped receiving port 41 of the collecting box 4 can ensure the fit between the slag outlet 24 and the return material port 25, thereby preventing gas leakage in the mixing chamber 22 and ensuring that the slag in the collecting box 4 will not leak when the collecting box 4 moves.

[0041] In order to solve the problem of how to make the raw materials in the mixing chamber 22 move to the slag outlet 24 during the production process, the following features are specifically set:

[0042] The first rotating shaft 211 of the reactor 2 is coaxially connected to the second rotating shaft 27, and the second rotating shaft 27 extends to the outside of the reactor 2. A plurality of stirring blades 271 are provided on the second rotating shaft 27. The stirring blades 271 extend radially along the second rotating shaft 27 and are evenly spaced along the axial direction of the second rotating shaft 27. A material lifting scraper 272 is provided at one end of the stirring blade 271 away from the second rotating shaft 27, and the material lifting scraper 272 is in contact with the inner wall of the mixing chamber 22.

[0043] In this embodiment, a second rotating shaft 27 is further provided inside the reactor 2. The second rotating shaft 27 is coaxially connected to the first rotating shaft 211 and rotates synchronously. When the second rotating shaft 27 rotates, the material-lifting scraper 272 on the stirring blade 271 moves along the inner wall of the mixing chamber 22. The material-lifting scraper 272 can scrape off the slag attached to the inner wall of the mixing chamber 22, and can also lift the raw materials at the bottom of the mixing chamber 22 toward the slag outlet 24, thereby improving the mixing degree of the raw materials and moving the raw materials toward the slag outlet 24.

[0044] In order to solve the problem of how to prevent the hydrogen fluoride gas in the mixing chamber 22 from leaking from the slag outlet 24 and the return port 25 when the collecting box 4 moves, the following features are specifically set:

[0045] The reactor 2 is provided with horizontally extending side plug holes 28 on one side of the slag outlet 24 and the return material outlet 25 toward the outer end of the reactor 2, and a blocking plug plate 281 for blocking the slag outlet 24 and the return material outlet 25 is slidably installed in the side plug hole 28. The blocking plug plate 281 extends along the axial direction of the reactor 2, and the width of the blocking plug plate 281 is greater than the width of the slag outlet 24 and the return material outlet 25.

[0046] In this embodiment, sealing plates 281 are provided at both ends of the reactor 2. The sealing plates 281 are inserted into the side holes 28 and cooperate with the sealing members to seal the side holes 28. When the collecting box 4 needs to be changed, the staff manually or with the help of a robotic arm pushes the sealing plates 281 inward to perform internal sealing on the slag outlet 24 and the return material outlet 25, and then the position of the collecting box 4 is changed. At this time, the gas in the mixing chamber 22 will not leak through the slag outlet 24 and the return material outlet 25. When the position of the collecting box 4 is changed, the sealing plates 281 are pulled out to restore the connection between the slag outlet 24 and the return material outlet 25 and the collecting box 4.

[0047] In order to solve the problem of how to synchronously move the collecting boxes 4 at both ends of the reaction furnace 2 in the opposite direction into the linear rail 261 at the other end, the following features are specifically set:

[0048] The rotating frame 3 includes an annular frame 32 sleeved on both ends of the outside of the reactor 2, and the annular frames 32 are connected by two horizontal connecting brackets 33. The connecting brackets 33 are provided with waist-shaped limiting holes 331 extending along their own length direction; a connecting block 42 is provided on the collecting box 4, and a plug rod 421 extending radially along the reactor 2 is provided on the connecting block 42. The plug rod 421 is inserted into the waist-shaped limiting hole 331, and the diameter of the plug rod 421 is the same as the width of the waist-shaped limiting hole 331; the linear drive unit 31 includes a mounting seat 311 connecting two annular frames 32 along the axial direction of the reactor 2, and a conveyor belt 312 is installed on the mounting seat 311. One end of the connecting rod 313 is fixedly connected to the upper and lower working surfaces of the conveyor belt 312 respectively, and the connecting rod 313 is located at both ends of the conveyor belt 312. The other end of the connecting rod 313 is connected to the slider 314, and the slider 314 is slidably installed on the connecting bracket 33, and the plug rod 421 of the collecting box 4 is inserted into the slider 314.

[0049] The collecting box 4 in this embodiment is connected to the slider 314 through the insert rod 421 on the connecting block 42, and the slider 314 is connected to the working surface of the conveyor belt 312 through the connecting rod 313. When the conveyor belt 312 drives the connecting rod 313 to move horizontally, the collecting box 4 and the slider 314 move synchronously. Since the moving directions of the upper and lower working surfaces of the conveyor belt 312 are different, the connecting rod 313 connecting the two collecting boxes 4 is installed at both ends of the upper and lower sides of the conveyor belt 312 to realize the synchronous reverse translation of the collecting box 4 when the conveyor belt 312 is started. The insert rod 421 is also inserted in the waist-shaped limiting hole 331 of the connecting bracket 33, and cooperates with the arc rail 262 to limit the collecting box 4, so as to ensure the stability of the moving path of the collecting box 4.

[0050] In order to solve the problem of how to ensure that the rotating frame 3 can drive the collecting box 4 to move in the arc rail 262 when rotating, the following features are specifically set:

[0051] At least one plug hole 422 parallel to the axis of the reaction furnace 2 is respectively provided at both ends of the collecting box 4 in the horizontal direction, and connecting plugs 332 which are in the same straight line as the plug hole 422 are provided at both ends of the connecting bracket 33 .

[0052] The rotating frame 3 in this embodiment is sleeved on both ends of the reactor 2 through an annular frame 32 to ensure the position of the axis of the rotating frame 3. The connecting plugs 332 are provided at both ends of the connecting bracket 33 connected to the annular frame 32. When the collecting box 4 moves to both ends of the linear rail 261 and is located in the arc rail 262, the connecting plug 332 is inserted into the socket 422 on the connecting block 42. Therefore, when the rotating drive unit 5 drives the rotating frame 3 to rotate, it can drive the collecting box 4 to move synchronously.

[0053] Since the arc-shaped rails 262 are disposed at both ends of the reaction furnace 2 and the arc-shaped openings are arranged opposite to each other, the collecting box 4 can first move along the straight rails 261 and then move along the arc-shaped rails 262 when changing positions, so that the rotating frame 3 always moves in the same direction. However, this will cause entanglement of some connecting lines, and the existence of the gas outlet pipe 221 will affect the rotation of the rotating frame 3. In order to solve this problem, the following features are specifically provided:

[0054] The rotation drive unit 5 includes a first rotating drum 51 and a second rotating drum 52 coaxially arranged at one end of the reaction furnace 2. The first rotating drum 51 is coaxially connected to the second rotating shaft 27 through a sleeve 511 at the axis and rotates synchronously with the second rotating shaft 27. The second rotating drum 52 is sleeved on the outside of the first rotating drum 51 and rotates in the opposite direction to the first rotating drum 51 along the axis of the first rotating drum 51; the length of the first rotating drum 51 in the axial direction is greater than the length of the second rotating drum 52 in the axial direction; a connector 34 is provided at one end of the rotating frame 3 close to the first rotating drum 51 and the second rotating drum 52, and the rotating frame 3 is connected to the first rotating drum 51 and the second rotating drum 52 of the rotation drive unit 5 through the connector 34.

[0055] The rotating drive unit 5 in this embodiment has a first rotating drum 51 and a second rotating drum 52, and the first rotating drum 51 and the second rotating drum 52 have opposite rotation directions. Therefore, when the rotating frame 3 is connected to the first rotating drum 51 or the second rotating drum 52 respectively through the connector 34, the first rotating drum 51 and the second rotating drum 52 can drive the rotating frame 3 and the collecting box 4 to rotate in opposite directions, so that the rotating frame 3 rotates back and forth one hundred and eighty degrees, avoiding the entanglement of the connecting wires of the electrical components installed on the rotating frame 3.

[0056] The first rotating drum 51 is connected to the second rotating shaft 27 through the sleeve 511, and the rotation driver 212 is used as a power source. How to make the second rotating drum 52 rotate synchronously in the opposite direction to the first rotating drum 51? Specifically, the following features are set:

[0057] A first annular tooth groove 512 surrounding the outer wall is provided at one end of the first rotating drum 51 close to the reaction furnace 2, and a second annular tooth groove 521 surrounding the inner wall is provided at one end of the second rotating drum 52 close to the reaction furnace 2. The rotation driving unit 5 also includes a plurality of transmission gears 53, which are rotatably installed at one end of the reaction furnace 2 close to the first rotating drum 51, and the axis of the transmission gear 53 is parallel to the axis of the first rotating drum 51. The first rotating drum 51 and the second rotating drum 52 are respectively meshed and connected with the transmission gear 53 through the first annular tooth groove 512 and the second annular tooth groove 521.

[0058] In this embodiment, the first rotating drum 51 is meshedly connected with the transmission gear 53 rotatably installed at one end of the reaction furnace 2 through the first annular tooth groove 512 on the outer wall, and the second rotating drum 52 is meshedly connected with the transmission gear 53 through the second side plate 522 on the inner wall. Therefore, when the first rotating drum 51 rotates following the second rotating shaft 27, the first rotating drum 51 rotates in the same direction as the second rotating shaft 27. At this time, the rotation of the first rotating drum 51 drives the transmission gear 53 to rotate, and the second rotating drum 52 is rotated through the transmission gear 53, so that the rotation directions of the second rotating drum 52 and the first rotating drum 51 are opposite.

[0059] In order to enable the rotating frame 3 to be respectively connected to the first rotating drum 51 and the second rotating drum 52 by transmission, the following features are specifically provided:

[0060] The first rotating drum 51 is provided with a plurality of first side plates 513, which protrude from the outer wall of the first rotating drum 51 and are distributed at equal angles around the outer wall of the first rotating drum 51; the second rotating drum 52 is provided with a plurality of second side plates 522, which protrude from the outer wall of the second rotating drum 52 and are distributed at equal angles around the outer wall of the second rotating drum 52; the connector 34 includes a flat plate bracket 341 extending above the first rotating drum 51 and the second rotating drum 52, and the flat plate bracket 341 is provided with two linear drives 342, the linear drives 343 and the linear drives 344. The working end of 42 moves radially along the first rotating drum 51, and a lifting plate 343 is fixedly connected to the working end of the linear drive 342. The lifting plates 343 connected by the two linear drives 342 are respectively located on the circumferential sides of the first rotating drum 51 and the second rotating drum 52. A resistance block 344 is provided on the side of the lifting plate 343 facing the first rotating drum 51 and the second rotating drum 52. The first side plate 513 of the first rotating drum 51 and the second side plate 522 of the second rotating drum 52 are in contact with one side of the resistance block 344 to drive the rotating frame 3 and the collecting box 4 to rotate and move.

[0061] In this embodiment, the length of the first rotating drum 51 is greater than that of the second rotating drum 52. Therefore, the first side plate 513 and the second side plate 522 provided on the outer wall portions of the first rotating drum 51 and the second rotating drum 52 can both contact with the connector 34 of the rotating frame 3. The connector 34 of the rotating frame 3 ensures that the two linear drivers 342 provided on the flat plate bracket 341 and the lifting plates 343 connected to the working ends of the linear drivers 342 are respectively located above the first rotating drum 51 and the second rotating drum 52. The linear drivers 342 are started in sequence to drive the lifting plates 343 to move downward. Until the lifting plate 343 moves down to the position where the interference block 344 can contact the first side plate 513 of the first drum 51 or the second side plate 522 of the second drum 52, when the first drum 51 and the second drum 52 rotate to the side where the first side plate 513 and the second side plate 522 are in contact with the interference block 344, the rotating frame 3 can be pushed to rotate and drive the collecting box 4 to move in the arc rail 262. After the rotating frame 3 rotates one hundred and eighty degrees, the linear drive 342 drives the lifting plate 343 and the interference block 344 to separate, so as to maintain the position of the collecting box 4.

[0062] After the rotating frame 3 rotates 180 degrees, it takes a certain amount of time for the linear driver 342 to drive the lifting plate 343 and the abutment block 344 to separate and move upward. In order to avoid affecting the rotation of the second rotating shaft 27 at this time, the following features are specifically set:

[0063] One end of the second rotating shaft 27 connected to the mounting seat 311 is provided with a plurality of conical slots 273, which extend along the axial direction of the second rotating shaft 27 and surround the circumference of the second rotating shaft 27, and the longitudinal section of the conical slot 273 is "V"-shaped; the inner wall of the sleeve 511 fits the outer wall of the second rotating shaft 27, and the sleeve 511 is provided with inner mounting holes 514 with the same number as the conical slots 273, and the inner mounting holes 514 are provided with a clamping block 515 and a plurality of springs 516, and the clamping block 515 is slidably installed in the inner mounting hole 514, and the spring 516 elastically connects the clamping block 515 and the top of the inner mounting hole 514, and the elastic force of the spring 516 causes the clamping block 515 to be inserted into the conical slot 273.

[0064] In this embodiment, the first rotating drum 51 is connected to the second rotating shaft 27 through the sleeve 511. The clamping block 515 is elastically installed in the inner mounting hole 514 provided inside the sleeve 511. The clamping block 515 is inserted into the conical clamping groove 273 of the second rotating shaft 27 under the elastic force of the spring 516, so as to realize the synchronous rotation of the second rotating shaft 27 and the first rotating drum 51. When the rotating frame 3 rotates 180 degrees, the collecting box 4 is limited by the arc rail 262 so that the rotating frame 3 cannot rotate. At this time, the connector 34 causes the first rotating drum 51 or the second rotating drum 52 to be unable to rotate. The second rotating shaft 27 rotates continuously under the drive of the rotating driver 212, and the clamping block 515 compresses the spring 516 under the pressure of the conical slot 273 to enter the inner mounting hole 514, so that there is no need to start and stop the rotating driver 212, and it will not affect the working end of the rotating driver 212. When the linear driver 342 drives the resistance block 344 to move up and disengage from the first side plate 513 or the second side plate 522, the second rotating shaft 27 rotates to the position where the clamping block 515 is inserted into the conical slot 273, and the rotation of the first rotating drum 51 and the second rotating drum 52 is restored.

[0065] A method for using a production device for preparing hydrogen fluoride, applied to a production device for preparing hydrogen fluoride, comprises the following steps:

[0066] Step 1: The raw materials for hydrogen fluoride production are transported into the transport pipe 21 of the reaction furnace 2 through the feed pipe 214, and the rotary driver 212 drives the spiral blade 213 to rotate to move the raw materials into the mixing chamber 22;

[0067] Step 2: The hydrogen fluoride gas generated by the raw materials entering the mixing chamber 22 is discharged from the gas outlet pipe 221, and the slag moves to the slag outlet 24 and falls into the collection box 4 through the slag outlet 24;

[0068] Step three, after the collecting box 4 collects a certain amount of slag, the linear drive unit 31 drives the collecting box 4 to move along the linear rail 261 of the limiting rail 26 to the arc rail 262 at the other end of the reactor 2, and the rotary drive unit 5 drives the collecting box 4 to move along the arc rail 262 to the return port 25 of the reactor 2, and the collecting box 4 is inverted so that the slag inside falls into the material receiving baffle 222, and is mixed with the raw material transported by the rotary drive 212, and enters the mixing chamber 22 again for reaction.

[0069] Working principle: When in use, the raw materials for hydrogen fluoride production are transported to the conveying pipe 21 of the reactor 2 through the feed pipe 214, and the rotary driver 212 drives the spiral blade 213 to rotate to move the raw materials into the mixing chamber 22; the rotary driver 212 can be a servo motor, and high-temperature gas can be rushed into the heating chamber 23 to heat the mixing chamber 22, and the hydrogen fluoride gas generated by the raw materials entering the mixing chamber 22 is discharged from the outlet pipe 221, and the slag is located at the bottom of the mixing chamber 22 and moves to the slag outlet 24, and finally falls into the collection box 4 through the slag outlet 24. The two collection boxes 4 are slidably mounted on the limit track 2 outside the reactor 2 6, after the collecting box 4 at the slag outlet 24 collects a certain amount of slag, the linear drive unit 31 drives the collecting box 4 to move along the linear track 261 of the limiting track 26 to the arc track 262 at the other end of the reactor 2, and the rotary drive unit 5 drives the collecting box 4 to move along the arc track 262 to the return port 25 of the reactor 2, and the collecting box 4 is inverted so that the slag inside falls into the material receiving baffle 222, and is mixed with the raw material transported by the rotary drive 212, and enters the mixing chamber 22 again for reaction, and the collecting box 4 originally located at the return port 25 is now moved to the slag outlet 24 to collect the slag generated in subsequent production.

[0070] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A production device for preparing hydrogen fluoride, comprising a base (1), and a reaction furnace (2) horizontally mounted on the base (1), a delivery pipe (21) being coaxially arranged at one end of the reaction furnace (2), a first rotating shaft (211) being rotatably mounted in the delivery pipe (21), a rotating driver (212) for driving the first rotating shaft (211) to rotate around its own axis being arranged outside the reaction furnace (2), spiral blades (213) engaging with the inner wall of the delivery pipe (21) being arranged on the circumference of the first rotating shaft (211), a feed pipe (214) extending vertically being arranged on the upper side of the delivery pipe (21), characterized in that: A mixing chamber (22) and a heating chamber (23) surrounding the outside of the mixing chamber (22) are provided in the reaction furnace (2); a conveying pipe (21) is connected to the mixing chamber (22); a spiral blade (213) extends into the mixing chamber (22); an end of the mixing chamber (22) away from the conveying pipe (21) is provided with a slag outlet (24) at its bottom, an air outlet pipe (221) is provided on its upper side; a return port (25) is provided on the upper side of an end of the mixing chamber (22) close to the spiral blade (213); a material receiving baffle (222) is provided below the return port (25) in the mixing chamber (22); the material receiving baffle (222) is located below the spiral blade (213) and extends obliquely upward on both sides; A limiting track (26) is arranged outside the reaction furnace (2), the limiting track (26) comprising arc-shaped tracks (262) respectively arranged at two ends of the reaction furnace (2), and two straight tracks (261) extending along the axis direction of the reaction furnace (2), the arc-shaped tracks (262) respectively starting from the slag outlet (24) and the return material outlet (25) and extending around the outer wall of the reaction furnace (2) in the same direction, and the two straight tracks (261) respectively connecting the head and tail ends of the two arc-shaped tracks (262); A rotating frame (3) is rotatably mounted outside the reaction furnace (2). The rotating frame (3) is coaxially arranged with the reaction furnace (2). Two collecting boxes (4) are arranged on the rotating frame (3). The collecting boxes (4) have an arc-shaped material receiving opening (41) that fits the outer wall of the reaction furnace (2). The collecting boxes (4) are slidably mounted in a limiting track (26). The two arc-shaped material receiving openings (41) are respectively fitted on the outside of the slag outlet (24) and the return material opening (25). A linear drive unit (31) is provided on the rotating frame (3), and the linear drive unit (31) drives the two collecting boxes (4) to move synchronously in opposite directions along the linear rail (261) of the limiting rail (26); a rotary drive unit (5) is provided on the rotating frame (3), and the rotary drive unit (5) drives the rotating frame (3) to rotate around the axis of the reaction furnace (2) to drive the collecting boxes (4) to move synchronously along the arc rail (262) of the limiting rail (26); The first rotating shaft (211) of the reaction furnace (2) is coaxially connected to the second rotating shaft (27), the second rotating shaft (27) extends to the outside of the reaction furnace (2), a plurality of stirring blades (271) are arranged on the second rotating shaft (27), the stirring blades (271) extend radially along the second rotating shaft (27) and are evenly spaced along the axis direction of the second rotating shaft (27), and a material lifting scraper (272) is arranged at one end of the stirring blade (271) away from the second rotating shaft (27), and the material lifting scraper (272) is in contact with the inner wall of the mixing chamber (22); The reactor (2) is provided with horizontally extending side plug holes (28) on one side of the slag outlet (24) and the return material outlet (25) facing the outer end of the reactor (2), and a plugging plate (281) for plugging the slag outlet (24) and the return material outlet (25) is slidably installed in the side plug holes (28), the plugging plate (281) extending along the axis direction of the reactor (2), and the width of the plugging plate (281) is greater than the width of the slag outlet (24) and the return material outlet (25); The rotating frame (3) comprises an annular frame (32) sleeved on both ends of the outside of the reaction furnace (2), the annular frames (32) being connected via two horizontal connecting brackets (33), and the connecting brackets (33) are provided with waist-shaped limiting holes (331) extending along their length direction; The collecting box (4) is provided with a connecting block (42), and the connecting block (42) is provided with an insert rod (421) extending radially along the reaction furnace (2), the insert rod (421) is inserted into the waist-shaped limiting hole (331), and the diameter of the insert rod (421) is the same as the width of the waist-shaped limiting hole (331); The linear drive unit (31) comprises a mounting seat (311) connected to two annular frames (32) along the axis direction of the reaction furnace (2); a conveyor belt (312) is mounted on the mounting seat (311); one end of a connecting rod (313) is fixedly connected to the upper and lower working surfaces of the conveyor belt (312), respectively; the connecting rod (313) is located at both ends of the conveyor belt (312); the other end of the connecting rod (313) is connected to a slider (314); the slider (314) is slidably mounted on the connecting bracket (33); and the insertion rod (421) of the collection box (4) is inserted into the slider (314); The rotary drive unit (5) comprises a first rotary drum (51) and a second rotary drum (52) which are coaxially arranged at one end of the reaction furnace (2); the first rotary drum (51) is coaxially connected to the second rotary shaft (27) via a sleeve (511) at the axis and rotates synchronously with the second rotary shaft (27); the second rotary drum (52) is sleeved outside the first rotary drum (51) and rotates in the opposite direction to the first rotary drum (51) along the axis of the first rotary drum (51); The length of the first rotating drum (51) in the axial direction is greater than the length of the second rotating drum (52) in the axial direction; A connector (34) is provided at one end of the rotating frame (3) close to the first rotating drum (51) and the second rotating drum (52), and the rotating frame (3) is transmission-connected to the first rotating drum (51) and the second rotating drum (52) of the rotating drive unit (5) via the connector (34).

2. A production equipment for preparing hydrogen fluoride according to claim 1, characterized in that: At least one plug hole (422) parallel to the axis of the reaction furnace (2) is respectively provided at both ends of the collection box (4) in the horizontal direction, and a connection plug (332) in the same straight line as the plug hole (422) is provided at both ends of the connection bracket (33).

3. The production equipment for preparing hydrogen fluoride according to claim 1, characterized in that: The end of the first rotating drum (51) close to the reaction furnace (2) is provided with a first annular tooth groove (512) surrounding the outer wall, and the end of the second rotating drum (52) close to the reaction furnace (2) is provided with a second annular tooth groove (521) surrounding the inner wall. The rotary drive unit (5) further comprises a plurality of transmission gears (53). The transmission gears (53) are rotatably mounted on the end of the reaction furnace (2) close to the first rotating drum (51). The axis of the transmission gear (53) is parallel to the axis of the first rotating drum (51). The first rotating drum (51) and the second rotating drum (52) are respectively meshed and connected with the transmission gears (53) via the first annular tooth groove (512) and the second annular tooth groove (521).

4. The production equipment for preparing hydrogen fluoride according to claim 1, characterized in that: A plurality of first side plates (513) are provided on the first rotating drum (51), the first side plates (513) protruding from the outer wall of the first rotating drum (51) and being distributed at equal angles around the outer wall of the first rotating drum (51); A plurality of second side plates (522) are provided on the second rotating drum (52), the second side plates (522) protruding from the outer wall of the second rotating drum (52) and being distributed at equal angles around the outer wall of the second rotating drum (52); The connector (34) comprises a flat plate support (341) extending above the first rotating drum (51) and the second rotating drum (52); two linear drivers (342) are arranged on the flat plate support (341); a working end of the linear driver (342) moves radially along the first rotating drum (51); a lifting plate (343) is fixedly connected to the working end of the linear driver (342); the lifting plates (343) connected to the two linear drivers (342) are respectively located on the circumference of the first rotating drum (51) and the second rotating drum (52); a resistance block (344) is arranged on one side of the lifting plate (343) facing the first rotating drum (51) and the second rotating drum (52); a first side plate (513) of the first rotating drum (51) and a second side plate (522) of the second rotating drum (52) are in contact with one side of the resistance block (344), thereby driving the rotating frame (3) and the collecting box (4) to rotate and move.

5. The production equipment for preparing hydrogen fluoride according to claim 1, characterized in that: One end of the second rotating shaft (27) connected to the mounting seat (311) is provided with a plurality of tapered slots (273), the tapered slots (273) extending along the axial direction of the second rotating shaft (27) and surrounding the circumference of the second rotating shaft (27), the longitudinal section of the tapered slots (273) being in a "V" shape; The inner wall of the sleeve (511) fits the outer wall of the second rotating shaft (27); the sleeve (511) is provided with inner mounting holes (514) having the same number as the conical slots (273); the inner mounting holes (514) are provided with a clamping block (515) and a plurality of springs (516); the clamping block (515) is slidably mounted in the inner mounting hole (514); the spring (516) elastically connects the clamping block (515) and the top of the inner mounting hole (514); the elastic force of the spring (516) causes the clamping block (515) to be inserted into the conical slot (273).

6. A method for using a production equipment for preparing hydrogen fluoride, applied to the production equipment for preparing hydrogen fluoride according to claim 1, characterized in that: The following steps are involved: Step 1: Raw materials for hydrogen fluoride production are transported into the transport pipe (21) of the reaction furnace (2) through the feed pipe (214), and the rotary driver (212) drives the spiral blade (213) to rotate so that the raw materials move into the mixing chamber (22); Step 2: The hydrogen fluoride gas generated by the raw materials entering the mixing chamber (22) is discharged from the gas outlet pipe (221), and the slag moves to the slag outlet (24) and falls into the collection box (4) through the slag outlet (24); Step 3: After the collecting box (4) collects the slag, the linear drive unit (31) drives the collecting box (4) to move along the linear rail (261) of the limiting rail (26) to the arc rail (262) at the other end of the reaction furnace (2), and the rotary drive unit (5) drives the collecting box (4) to move along the arc rail (262) to the return port (25) of the reaction furnace (2). The collecting box (4) is inverted so that the slag inside falls into the receiving baffle (222) and is mixed with the raw material transported by the rotary drive (212) and enters the mixing chamber (22) again for reaction.

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