Preparation device and preparation method of plastic modified anhydrous fluorgypsum

Abstract

The invention relates to the technical field of gypsum preparation, in particular to a preparation device and a preparation method of plastic modified anhydrous fluorgypsum. A stirring motor; a temperature control device; the invention discloses a multidirectional stirring device. Multi-state stirring is achieved through rotation power generated by one stirring motor, then the effect of sufficient mixing and stirring is achieved, power is provided for temperature circulation during stirring, then gypsum materials are promoted to react sufficiently, and the purpose of improving the overall preparation effect of the gypsum materials is further achieved. The stirring motor transmits rotating force to the reciprocating screw rod through the temperature control device, the reciprocating screw rod drives the double-end stirring blade rack rod on the stirring shaft to rotate through the rack rod, and meanwhile, the ball sliding sleeve drives the stirring shaft to move up and down while moving on the reciprocating screw rod. The stirring shaft drives each double-end stirring blade rack rod in the stirring shaft to rotate on the rack rod in a meshing manner, and the rotating double-end stirring blade rack rods can achieve the effect of mixing and stirring gypsum materials in an upper-lower layer manner.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum preparation, in particular to a preparation device and a preparation method of plastic-modified anhydrous fluorgypsum. Background Art

[0002] Plastic modified anhydrous fluorogypsum is a new type of material obtained by compounding anhydrous fluorogypsum with plastic through a specific process. Anhydrous fluorogypsum is a by-product of the fluorine chemical industry, and its main component is calcium sulfate. Plastics can be compounded with anhydrous fluorogypsum by physical or chemical methods, and plastics can play a role in toughening, enhancing interfacial bonding, and improving processing performance. For example, thermoplastic plastics are fully mixed with anhydrous fluorogypsum in a heated and molten state, and plastic molecules can be filled into the microscopic pores and crystal gaps of anhydrous fluorogypsum, forming an interwoven network structure after cooling and solidification. This not only enhances the toughness of the material, making it less likely to break when subjected to external forces, but also improves the strength of the material to a certain extent. From the perspective of interface bonding, some plastics can form a good bond with the surface of anhydrous fluorogypsum through chemical bonding, physical adsorption, etc., thereby improving the overall performance of the composite material. In terms of processing performance, the addition of plastics can reduce the hardness and brittleness of anhydrous fluorogypsum, making the composite material easier to form and process, such as extrusion molding, injection molding, etc., thereby expanding its application possibilities in more fields.

[0003] A reactor is required for mixing and reacting anhydrous fluorinated gypsum with plastics. The reactor usually has heating and stirring functions to ensure uniform mixing and reaction. There are many shapes of stirring rods commonly used in reactors, including paddle type, anchor type, turbine type, spiral type, etc. In the preparation of anhydrous fluorinated gypsum modified by plastics, the shape of the stirring rod set in the reactor determines its effect on gypsum stirring. The existing stirring rods have relatively single functions and cannot achieve multi-effect stirring of gypsum in the reactor. The single stirring method cannot make the gypsum material be stirred in only one state for a long time, resulting in poor overall stirring effect. At the same time, the problem of gypsum residue on the inner wall of the reactor needs to be solved. In addition, when anhydrous fluorogypsum is mixed and reacted with plastic, the temperature inside the reactor needs to be maintained. Jackets, coils and other equipment are commonly used to control the temperature through steam circulation or water circulation. The temperature is gradually transferred from the periphery to the axis of the reactor. There is a problem of uneven temperature between the peripheral gypsum material and the central gypsum material. In view of this, we propose a preparation device and method for plastic-modified anhydrous fluorogypsum. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a preparation device and a preparation method for plastic-modified anhydrous fluorgypsum, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented by the following technical scheme: a preparation device and a preparation method for plastic-modified anhydrous fluorgypsum, comprising a reactor, a stirring motor is installed on the top of the reactor, and the output shaft of the stirring motor is provided with a temperature control device; a multi-directional stirring device, the multi-directional stirring device is arranged on the temperature control device, the multi-directional stirring device includes a reciprocating screw and an auxiliary stirring device, the reciprocating screw is arranged on the temperature control device, the reciprocating screw is slidably connected to the reciprocating screw, the surface of the ball sleeve is rotatably connected to the stirring shaft, the interior of the stirring shaft is slidably connected to a rack rod, and the surface of the rack rod is meshed with a double-headed stirring blade tooth rod.

[0005] Preferably, the top of the ball sleeve is fixed to the top of the reactor by a telescopic tube, the top of the rack rod is fixedly connected to the bottom end of the reciprocating screw rod, the surface of the double-headed stirring blade tooth rod is rotatably connected to the inside of the stirring shaft, and the double-headed stirring blade tooth rod is provided with a ventilation groove, the inside of the double-headed stirring blade tooth rod is provided with a cavity, the surface of the stirring shaft is provided with a sealing sleeve at the rotation point of the double-headed stirring blade tooth rod, and the inner wall of the sealing sleeve is fixedly connected to the surface of the stirring shaft.

[0006] Preferably, the auxiliary stirring device includes a planetary base, the top of the planetary base is fixedly connected to the top of the reactor through a telescopic sleeve, the bottom of the planetary base is rotatably connected to a meshing gear, the surface of the meshing gear is meshed with a driving gear, the planetary base is rotatably connected to a reverse rotating gear seat, the surface of the reverse rotating gear seat is fixedly connected to a stirring scraper arm, and the stirring scraper arm is fixedly connected to a stirring blade.

[0007] Preferably, the interior of the planetary base is rotationally connected to the surface of the stirring shaft, the interior of the driving gear is fixedly connected to the surface of the stirring shaft, and the inner wall of the counter-rotating gear seat is meshed with the surface of the meshing gear through teeth.

[0008] Preferably, the temperature control device includes a coupling rod and a temperature control base, one end of the coupling rod is clamped on the output shaft of the stirring motor, the other end of the coupling rod is fixedly connected to an air inlet bin, the surface of the coupling rod is rotatably connected to a ventilation bin, the ventilation bin is fixedly connected to an air pressure bin via a one-way air inlet pipe, the internal piston of the air pressure bin is connected to an air pressure plate, one side of the air pressure plate is fixedly connected to a passive plate via a sliding shaft, a cam is fixedly connected to the coupling rod, and the bottom end of the air inlet bin is fixedly connected to an air outlet bin.

[0009] Preferably, the surface of the ventilation chamber is fixedly connected to the top of the reactor, the surface of the air pressure chamber is fixedly connected to the top of the reactor, the side of the air pressure plate close to the sliding shaft is fixedly connected to the inner wall of the air pressure chamber through a spring, and the surface of the sliding shaft is slidably connected to one side of the air pressure chamber.

[0010] Preferably, a through cavity is opened at the axis center of the air inlet bin and the air outlet bin, the air inlet bin is connected with the interior of the air outlet bin through the through cavity, the air outlet bin is connected with the interior of the reciprocating screw rod through the through cavity, an isolation air outlet cavity is opened inside the air outlet bin, the bottom of the isolation air outlet cavity is slidably connected with a telescopic air seat, the bottom end of the telescopic air seat is fixed inside the stirring shaft, and the isolation air outlet cavity is connected with the interior of the stirring shaft through the telescopic air seat.

[0011] Preferably, the temperature control base includes a mounting frame, the mounting frame is installed on the reaction kettle, the mounting frame is fixedly connected to a temperature control box, and the interior of the temperature control box is respectively fixedly connected with a heating tube and a spiral tube.

[0012] Preferably, the air outlet end and the air inlet end of the spiral tube are fixedly connected to the surface of the air pressure chamber and the surface of the air outlet chamber respectively, the air pressure chamber is fixedly connected with a one-way valve at the connection point of the air outlet end of the spiral tube, and the air inlet end of the spiral tube is connected to the interior of the air outlet chamber.

[0013] A method for preparing plastic-modified anhydrous fluorgypsum comprises the following steps: Step 1: Feeding, anhydrous fluorgypsum and plastic raw materials are transported to the reactor through the feeding system; Step 2: stirring, including the following steps, S1. Start the stirring motor. The output shaft of the stirring motor drives the air inlet bin, the air outlet bin, the reciprocating screw rod and the rack rod to rotate synchronously through the coupling rod. The rack rod drives the stirring shaft as a whole to drive multiple double-head stirring blade racks to revolve and stir, thereby achieving preliminary stirring. S2. The reciprocating screw drives the stirring shaft and the planetary base to move up and down through the ball sleeve while rotating. The stirring shaft rotates and moves up and down, and during the up and down movement, the double-headed stirring blade gear rod is driven to engage with the rack rod. The double-headed stirring blade gear rod realizes self-rotation during the revolution, so as to achieve the stirring and mixing of the gypsum material in the upper and lower layers; S3, the stirring shaft synchronously drives the driving gear to rotate when rotating, and the driving gear drives the reverse rotating gear seat to rotate on the planetary base through the meshing gear, and the reverse rotating gear seat drives the stirring blades on the stirring scraper arm to rotate and stir, and the stirring scraper arm realizes the work of scraping the gypsum material on the inner wall of the reactor; Step 3: Heating, including the following steps: S1. Start the heating tube, which heats the gas in the spiral tube. The coupling rod continuously squeezes the passive plate through the cam during rotation. After the pressure is applied, it is reset by the spring on the air pressure plate. When resetting, the air pressure plate generates negative pressure in the air pressure chamber. The negative pressure replenishes hot air from the spiral tube into the air pressure chamber through the one-way valve. Until the passive plate is squeezed again, the passive plate drives the air pressure plate through the sliding shaft to squeeze the hot air in the air pressure chamber into the ventilation chamber through the one-way air inlet pipe. The hot air enters the stirring shaft through the air inlet chamber and the reciprocating screw rod in turn, and gradually fills the inside of the double-head stirring blade tooth rod, thereby heating the double-head stirring blade tooth rod and the stirring shaft, so that the double-head stirring blade tooth rod and the stirring shaft can be heated during stirring. S2. The air pressure chamber provides circulating power for the gas. After the gas is squeezed into the stirring shaft, it enters the isolated gas outlet cavity in the reciprocating screw through the telescopic gas seat. The isolated gas outlet cavity transports the gas to the spiral tube through the ventilation chamber. The gas is circulated and heated by the heating tube in the spiral tube, so that the gas circulates to heat the double-head stirring blade tooth rod and the stirring shaft; Step 4: Discharging the prepared plastic modified anhydrous fluorgypsum from the reactor.

[0014] It can be seen from the above technical solutions that the preparation device and preparation method of a plastic-modified anhydrous fluorgypsum provided in the embodiments of this specification have at least the following beneficial effects: (1) The present invention realizes multi-state stirring through the rotational power generated by a stirring motor, thereby achieving the effect of sufficient mixing and stirring, and provides power for temperature circulation during stirring, thereby promoting the gypsum material to fully react, and further achieving the purpose of improving the overall preparation effect of the gypsum material. The stirring motor transmits the rotational force to the reciprocating screw through the temperature control device, and the reciprocating screw drives the double-headed stirring blade gear rod on the stirring shaft to rotate through the rack rod. At the same time, the ball sleeve drives the stirring shaft to move up and down at the same time when moving on the reciprocating screw. The stirring shaft drives each double-headed stirring blade gear rod inside it to mesh and rotate on the rack rod. The rotating double-headed stirring blade gear rod can achieve the effect of mixing and stirring the gypsum material in the upper and lower layers.

[0015] (2) The present invention uses an auxiliary stirring device and utilizes the driving gear on the stirring shaft to engage with the meshing gear, and the meshing gear drives the stirring scraper arm and the stirring blade on the reverse rotating gear seat to rotate and stir. On the one hand, when the stirring scraper arm rotates, the gypsum material on the inner wall of the reactor can be scraped off. On the other hand, the stirring blade on the stirring scraper arm rotates in the opposite direction to the double-headed stirring blade tooth rod, thereby achieving the effect of forward and reverse stirring and mixing of the inner and outer circles of the reactor. At the same time, the double-headed stirring blade tooth rod and the stirring blade on the stirring scraper arm also move up and down at the same time when rotating, thereby further increasing the stirring range, so that the gypsum material can be mixed and stirred more fully.

[0016] (3) The present invention uses a temperature control device and a stirring motor to drive the cam on the coupling rod to intermittently squeeze the passive plate. The air pressure plate combines with the elastic force to continuously reciprocate during the rotation of the coupling rod. Positive and negative pressures are generated in the air pressure chamber during the reciprocating movement. The positive and negative pressures are used to control the hot air to be replenished into the ventilation chamber from the one-way air inlet pipe in one direction. The hot air enters the stirring shaft in turn through the air inlet chamber and the reciprocating screw. The hot air that is continuously replenished in one direction gradually fills the interior of each double-headed stirring blade tooth rod, and the purpose of heating the gypsum material in the axial area of ​​the reactor is achieved by heat transfer. The double-headed stirring blade tooth rod and the stirring shaft are heated to heat the gypsum material at this location during stirring. Combined with the existing heating coil, the effect of heating the gypsum material in the inner and outer circles of the reactor is further achieved, thereby further promoting the uniformity of the temperature of the internal gypsum material.

[0017] (4) The present invention provides a one-way circulation power for the gas through the reciprocating movement of the air pressure plate in the air pressure chamber. After being squeezed into the stirring shaft, the gas enters the isolated air outlet cavity in the reciprocating screw through the telescopic air seat, and the gas is returned to the spiral tube from the ventilation chamber through the isolated air outlet cavity. The gas continuously circulates one-way in the spiral tube and is cyclically heated by the heating tube during the circulation period, thereby ensuring that the heating effect of the double-headed stirring blade tooth rod and the stirring shaft is always present, thereby achieving the purpose of continuously heating the gypsum material in the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the reactor in the present invention; Figure 3 It is a structural schematic diagram of the reciprocating screw rod in the present invention; Figure 4 This is a schematic diagram of the internal structure of the stirring shaft in the present invention; Figure 5 This is a schematic diagram of the double-ended stirring blade tooth rod structure of the present invention; Figure 6 It is a structural schematic diagram of the sealing sleeve in the present invention; Figure 7 It is a structural schematic diagram of the reciprocating screw rod in the present invention; Figure 8 It is a structural schematic diagram of the air inlet bin in the present invention; Fig. 9 It is a schematic diagram of the structure of the reverse rotating gear holder in the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the gas outlet bin in the present invention; Fig.11This is a schematic diagram of the internal structure of the temperature control box in the present invention; Fig.12 It is a structural schematic diagram of the air pressure chamber in the present invention; Fig.13 It is a structural schematic diagram of the telescopic air seat in the present invention; Fig.14 It is a schematic diagram of the structure of the planetary base in the present invention.

[0019] In the figure: 1, reactor; 2, stirring motor; 3, temperature control device; 31, coupling rod; 32, air inlet chamber; 33, ventilation chamber; 34, one-way air inlet pipe; 35, air pressure chamber; 36, air pressure plate; 37, sliding shaft; 38, passive plate; 39, cam; 310, air outlet chamber; 311, through cavity; 312, isolation air outlet cavity; 313, telescopic air seat; 4, multi-directional stirring device; 41, reciprocating screw; 42, ball bearing sleeve; 43. Stirring shaft; 44. Rack rod; 45. Double-headed stirring blade tooth rod; 46. Telescopic tube; 47. Vent groove; 48. Sealing sleeve; 5. Auxiliary stirring device; 51. Planetary base; 52. Telescopic sleeve; 53. Meshing gear; 54. Driving gear; 55. Reverse rotating gear seat; 56. Stirring scraper arm; 6. Temperature control base; 61. Mounting frame; 62. Temperature control box; 63. Heating tube; 64. Spiral tube; 65. One-way valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 See also Figure 1 - Fig.14As shown, a preparation device for plastic-modified anhydrous fluorinated gypsum comprises: a reactor 1, a stirring motor 2 is installed on the top of the reactor 1, and a temperature control device 3 is provided on the output shaft of the stirring motor 2; a multi-directional stirring device 4, the multi-directional stirring device 4 is arranged on the temperature control device 3, and the multi-directional stirring device 4 comprises a reciprocating screw 41 and an auxiliary stirring device 5, the reciprocating screw 41 is arranged on the temperature control device 3, and a ball sleeve 42 is slidably connected to the reciprocating screw 41, and the surface of the ball sleeve 42 is rotatably connected to the reciprocating screw 41. A stirring shaft 43 is connected, and a rack rod 44 is slidably connected inside the stirring shaft 43. The top of the rack rod 44 is fixedly connected to the bottom end of the reciprocating screw rod 41. The surface of the rack rod 44 is meshed with a double-headed stirring blade tooth rod 45. A gear is provided at the center of the double-headed stirring blade tooth rod 45 for meshing with the surface of the rack rod 44. A slide groove is provided on the rack rod 44. The rack rod 44 slides with the slider in the stirring shaft 43 through the slide groove. The surface of the double-headed stirring blade tooth rod 45 is rotatably connected A ventilation groove 47 is provided inside the stirring shaft 43 and on the double-headed stirring blade tooth rod 45. A cavity is provided inside the double-headed stirring blade tooth rod 45. The ventilation groove 47 is used to guide the gas outside the double-headed stirring blade tooth rod 45 to the cavity inside the double-headed stirring blade tooth rod 45, and then fill the cavity with hot air to achieve the effect of quickly heating the double-headed stirring blade tooth rod 45. The top end of the ball sliding sleeve 42 is fixed to the top of the reactor 1 through a telescopic tube 46. The telescopic tube 46 is used to limit the ball sliding sleeve 42. The ball sleeve 42 can only move up and down. The ball sleeve 42 slides in the wire groove on the reciprocating screw 41 through the balls arranged inside. When the reciprocating screw 41 rotates, the ball sleeve 42 will reciprocate on the reciprocating screw 41. The surface of the stirring shaft 43 is located at the rotation point of the double-headed stirring blade tooth rod 45 and is sleeved with a sealing sleeve 48. The inner wall of the sealing sleeve 48 is fixedly connected to the surface of the stirring shaft 43. The sealing sleeve 48 is used to seal the rotation point of the double-headed stirring blade tooth rod 45 and the stirring shaft 43. The stirring motor 2 transmits the rotational force to the reciprocating screw 41 through the temperature control device 3. During the rotation, the reciprocating screw 41 transmits the rotational force to the rack rod 44 through the rack rod 44 fixed thereon, and the rack rod 44 performs limited sliding of the stirring shaft 43. The multiple double-headed stirring blade gear rods 45 located in the stirring shaft 43 will also revolve with the stirring shaft 43. At the same time, when the reciprocating screw 41 rotates, the ball sleeve 42 will continuously move up and down on the reciprocating screw 41, and the ball sleeve 42 drives the stirring shaft 43 to move up and down at the same time. The stirring shaft 43 drives the various double-headed stirring blade gear rods 45 inside it to perform synchronous height adjustment. At this time, the gear at the center of the double-headed stirring blade gear rod 45 will mesh with the rack rod 44, thereby realizing the effect of the double-headed stirring blade gear rod 45 rotating in the stirring shaft 43. The horizontally rotating double-headed stirring blade gear rod 45 can achieve the effect of mixing and stirring the gypsum material in the upper and lower layers.

[0022] In this embodiment, the auxiliary stirring device 5 includes a planetary base 51, the top of the planetary base 51 is fixedly connected to the top of the reactor 1 through a telescopic sleeve 52, the telescopic sleeve 52 is used to limit the planetary base 51 to only move up and down, the planetary base 51 is rotatably connected to the stirring shaft 43, the height of the planetary base 51 is adjusted with the height of the stirring shaft 43, the bottom of the planetary base 51 is rotatably connected to a meshing gear 53, the surface of the meshing gear 53 is meshed with a driving gear 54, the driving gear 54 is fixed on the stirring shaft 43, the planetary base 51 is rotatably connected to a reverse rotating gear seat 55, the inner wall of the reverse rotating gear seat 55 is meshed with the surface of the meshing gear 53 through teeth, the surface of the reverse rotating gear seat 55 is fixedly connected to a stirring scraper arm 56, the stirring scraper arm 56 is fixedly connected with a stirring blade, and the driving gear 54 fixed on the stirring shaft 43 meshes with the driving meshing gear when rotating. 53, the meshing gear 53 drives the reverse rotating gear seat 55 to rotate on the planetary base 51, and the reverse rotating gear seat 55 drives the stirring blades on the stirring scraper arm 56 to rotate and stir. On the one hand, when the stirring scraper arm 56 rotates, the gypsum material on the inner wall of the reactor 1 can be scraped off. On the other hand, due to the setting of the meshing gear 53, the stirring blades on the stirring scraper arm 56 and the double-headed stirring blade tooth rod 45 rotate in opposite directions. The two opposite stirring modes can be replaced to promote the stirring and mixing of the gypsum in the reactor 1, thereby increasing the overall stirring effect of the reactor 1, not only achieving the effect of positive and negative stirring and mixing of the inner and outer rings of the reactor 1, but also achieving the effect of mixing and stirring the upper and lower layers of the reactor 1. At the same time, the stirring blades on the double-headed stirring blade tooth rod 45 and the stirring scraper arm 56 also move up and down at the same time when rotating, thereby further increasing the stirring range, so that the gypsum material is mixed and stirred more fully.

[0023] Furthermore, the temperature control device 3 includes a coupling rod 31 and a temperature control base 6, one end of the coupling rod 31 is clamped on the output shaft of the stirring motor 2, the other end of the coupling rod 31 is fixedly connected to the air inlet bin 32, and the surface of the coupling rod 31 is rotatably connected to the ventilation bin 33 (such as Fig.11As shown in the figure, the surface of the vent bin 33 is fixedly connected to the top of the reactor 1, and the vent bin 33 is fixedly connected to the air pressure bin 35 through a one-way air inlet pipe 34. The surface of the air pressure bin 35 is fixedly connected to the top of the reactor 1, and the internal piston of the air pressure bin 35 is connected to a pressure plate 36, and one side of the pressure plate 36 is fixedly connected to a passive plate 38 through a sliding shaft 37. The side of the pressure plate 36 away from the sliding shaft 37 forms a retractable closed cavity with the inside of the pressure bin 35, and the deformation of the cavity can generate positive and negative Air pressure, one side of the air pressure plate 36 close to the sliding shaft 37 is fixedly connected to the inner wall of the air pressure chamber 35 through a spring, and the spring is used to provide reset power for the air pressure plate 36, the surface of the sliding shaft 37 is slidingly connected to one side of the air pressure chamber 35, and a cam 39 is fixedly connected to the coupling rod 31. The air pressure plate 36 slides in the air pressure chamber 35, and the passive plate 38 moves outside the air pressure chamber 35. The passive plate 38 is used to be driven by the cam 39 during rotation, and the bottom end of the air inlet chamber 32 is fixedly connected to the air outlet chamber 310. The output shaft of the stirring motor 2 drives the coupling rod 31 to rotate, and the coupling rod 31 intermittently squeezes the passive plate 38 through the cam 39 fixed thereon. During squeezing, the passive plate 38 drives the air pressure plate 36 to move through the sliding shaft 37. After squeezing, the passive plate 38 is moved and reset by the spring on the air pressure plate 36. The air pressure plate 36 continuously reciprocates during the rotation of the coupling rod 31. During the reciprocating movement, positive and negative pressures are generated in the air pressure chamber 35. The positive and negative pressures are used to control the hot air to be replenished in the ventilation chamber 33 from the one-way air inlet pipe 34 in one direction. The hot air enters the stirring shaft 43 through the air inlet chamber 32, the air outlet chamber 310, and the reciprocating screw rod 41 in turn. The through cavity 311 is located at the axis of the air inlet chamber 32, the air outlet chamber 310 and the reciprocating screw rod 41 and penetrates them together. The gas here can pass through the air inlet chamber 32, the air outlet chamber 310 and the reciprocating screw rod 41 in turn (combined with Figure 8 and Fig.10 As shown in the figure, the hot air continuously supplied in one direction gradually fills the interior of each double-headed stirring blade tooth rod 45, and utilizes the heat transfer to achieve the purpose of heating the gypsum material in the axial area of ​​the reactor 1. The double-headed stirring blade tooth rod 45 and the stirring shaft 43 are heated to heat the gypsum material at this location during stirring. Combined with the existing heating coil, the gypsum material in the inner and outer circles of the reactor 1 is further heated, thereby further promoting the uniformity of the temperature of the internal gypsum material.

[0024] Furthermore, a through cavity 311 is provided at the axis of the air inlet bin 32 and the air outlet bin 310, and the air inlet bin 32 is connected to the inside of the air outlet bin 310 through the through cavity 311, and the air outlet bin 310 is connected to the inside of the air outlet bin 310 through the through cavity 311 (such as Fig.10The hot air enters the through cavity 311 through the cavity in the air inlet bin 32, and flows from the interior of the reciprocating screw 41 to the stirring shaft 43 through the common through cavity 311 in the air outlet bin 310. The hot air continuously replenished in one direction gradually fills the interior of each double-headed stirring blade tooth rod 45, and utilizes the heat transfer to achieve the purpose of heating the gypsum material in the axial area of ​​the reactor 1. An isolated air outlet cavity 312 is provided in the air outlet bin 310. At the same time, the isolated air outlet cavity 312 is not directly connected to the through cavity 311. The bottom of the isolated air outlet cavity 312 is slidably connected to a telescopic air seat 313. The bottom end of the telescopic air seat 313 is fixed to the interior of the stirring shaft 43. The isolated air outlet cavity 312 is connected to the interior of the stirring shaft 43 through the telescopic air seat 313.

[0025] It is worth noting that the temperature control base 6 includes a mounting frame 61, which is mounted on the reactor 1. The mounting frame 61 is fixedly connected to a temperature control box 62. A heating tube 63 and a spiral tube 64 are fixedly connected to the interior of the temperature control box 62. The heating tube 63 heats the gas in the spiral tube 64. The outlet and inlet ends of the spiral tube 64 are fixedly connected to the surface of the air pressure chamber 35 and the surface of the air outlet chamber 310, respectively. The air pressure chamber 35 is fixedly connected to a one-way valve 65 at the connection of the outlet end of the spiral tube 64. The inlet end of the spiral tube 64 is connected to the interior of the air outlet chamber 310. The air pressure plate 36 continuously reciprocates during the rotation of the coupling rod 31. Positive and negative pressures are generated in the reciprocating movement to act on the air pressure chamber 35. When negative pressure is generated, the negative pressure force replenishes hot air from the spiral tube 64 into the air pressure chamber 35 through the one-way valve 65. The replenished hot air is squeezed out through the one-way inlet pipe 34 when the air pressure plate 36 generates positive pressure. The gas is pressed into the ventilation bin 33, and the reciprocating movement of the air pressure plate 36 in the air pressure bin 35 provides power for the one-way circulation of the gas. After being squeezed into the stirring shaft 43, the gas enters the isolated air outlet cavity 312 in the reciprocating screw 41 through the telescopic air seat 313, and the gas is returned to the spiral tube 64 from the ventilation bin 33 through the isolated air outlet cavity 312. The gas continuously circulates one-way in the spiral tube 64 and is cyclically heated by the heating tube 63 during the circulation, thereby ensuring that the heating effect of the double-headed stirring blade tooth rod 45 and the stirring shaft 43 is always present, thereby achieving the purpose of continuously heating the gypsum material in the reactor 1.

[0026] A method for preparing plastic-modified anhydrous fluorgypsum comprises the following steps: Step 1: Feeding: anhydrous fluorinated gypsum and plastic raw materials are transported to the reactor 1 through a feeding system. The feeding system may include a conveyor, a screw feeder or other suitable equipment; Step 2: stirring, including the following steps, S1, start the stirring motor 2, the output shaft of the stirring motor 2 drives the air inlet bin 32, the air outlet bin 310, the reciprocating screw rod 41 and the rack rod 44 to rotate synchronously through the coupling rod 31, and the rack rod 44 drives the stirring shaft 43 as a whole to drive the multiple double-headed stirring blade tooth rods 45 to revolve and stir, so as to achieve preliminary stirring, so as to achieve the effect of unidirectional stirring and mixing of the gypsum material inside the reactor 1; S2, the reciprocating screw 41 drives the stirring shaft 43 and the planetary base 51 to move up and down through the ball sleeve 42 while rotating, and the stirring shaft 43 rotates and moves up and down, and during the up and down movement, it drives the double-headed stirring blade gear rod 45 to mesh with the rack rod 44, and the double-headed stirring blade gear rod 45 realizes self-rotation during the revolution, so as to achieve the upper and lower layers of stirring and mixing of the gypsum material, and achieve the effect of double stirring and mixing of the gypsum material inside the reactor 1; S3, when the stirring shaft 43 rotates, it synchronously drives the driving gear 54 to rotate, and the driving gear 54 drives the reverse rotating gear seat 55 to rotate on the planetary base 51 through the meshing gear 53, and the reverse rotating gear seat 55 drives the stirring blades on the stirring scraper arm 56 to rotate and stir, and the stirring scraper arm 56 scrapes the gypsum material on the inner wall of the reactor 1, further avoiding the problem that the gypsum material adheres to the inner wall of the reactor 1 and affects the preparation effect, and realizes the multifunctional stirring effect of the reactor 1; Step 3: Heating, including the following steps: S1, start the heating tube 63, the heating tube 63 heats the gas in the spiral tube 64, the coupling rod 31 continuously squeezes the passive plate 38 through the cam 39 during the rotation, and resets through the spring on the air pressure plate 36 after the pressure ends. When resetting, the air pressure plate 36 generates negative pressure in the air pressure chamber 35, and the negative pressure replenishes hot air from the spiral tube 64 into the air pressure chamber 35 through the one-way valve 65, until the passive plate 38 is squeezed again, the passive plate 38 drives the air pressure plate 36 through the sliding shaft 37 to squeeze the hot air in the air pressure chamber 35 into the ventilation chamber 33 through the one-way air inlet pipe 34, and the hot air enters the stirring shaft 43 through the air inlet chamber 32 and the reciprocating screw rod 41 in turn, and gradually fills the inside of the double-headed stirring blade tooth rod 45, so as to achieve the heating of the double-headed stirring blade tooth rod 45 and the stirring shaft 43, so that they can perform heating work during stirring, and further achieve the effect of heating the gypsum materials in the inner and outer circles of the reactor 1, thereby further promoting the uniformity of the temperature of the internal gypsum materials; S2, the air pressure chamber 35 provides circulation power for the gas. After the gas is squeezed into the stirring shaft 43, it enters the isolated gas outlet cavity 312 in the reciprocating screw 41 through the telescopic gas seat 313. The isolated gas outlet cavity 312 transports the gas to the spiral tube 64 through the ventilation chamber 33. The gas is circulated and heated by the heating tube 63 in the spiral tube 64, so that the gas circulates and heats the double-headed stirring blade tooth rod 45 and the stirring shaft 43, and further achieves the effect of continuously heating the gypsum material in the reactor 1; Step 4: discharging the prepared plastic modified anhydrous fluorgypsum from the reaction kettle 1.

[0027] When the preparation device and preparation method of the plastic-modified anhydrous fluorinated gypsum of the present invention are used, an appropriate amount of anhydrous fluorinated gypsum and plastic raw materials are fed into the reactor 1 through the feeding mechanism, and the stirring motor 2 is started. The output shaft of the stirring motor 2 synchronously drives the air inlet bin 32, the air outlet bin 310, the reciprocating screw rod 41 and the rack rod 44 to rotate through the coupling rod 31. The air inlet bin 32, the air outlet bin 310, the reciprocating screw rod 41 and the rack rod 44 are in a coaxial fixed state, so their movement modes are consistent. At the same time, a slide groove is provided on the rack rod 44, and the rack rod 44 slides with the slider in the stirring shaft 43 through the slide groove. The rack rod 44 rotates When the reciprocating screw 41 is in motion, the stirring shaft 43 can be driven to rotate simultaneously, and the multiple double-headed stirring blade gear rods 45 located in the stirring shaft 43 will also revolve around the axis of the stirring shaft 43 as a circle; when the reciprocating screw 41 is rotating, the ball sleeve 42 slides in the wire groove on the reciprocating screw 41 through the balls arranged inside. When the reciprocating screw 41 rotates, the ball sleeve 42 will reciprocate on the reciprocating screw 41, and the ball sleeve 42 drives the stirring shaft 43, the planetary base 51, and the reverse rotating gear seat 55 to move up and down synchronously. At this time, the stirring shaft 43 rotates and moves up and down at the same time, and during the up and down movement, it drives each double-headed stirring blade gear rod 45 inside it to move The height of the double-headed stirring blade gear rod 45 is adjusted synchronously. At this time, the gear at the center of the double-headed stirring blade gear rod 45 will mesh with the rack rod 44, so that the double-headed stirring blade gear rod 45 can rotate in the stirring shaft 43. The horizontally rotating double-headed stirring blade gear rod 45 can achieve the effect of mixing and stirring the upper and lower layers of the gypsum material; at the same time, the driving gear 54 fixed on the stirring shaft 43 meshes with the driving meshing gear 53 when rotating, and the meshing gear 53 drives the reverse rotating gear seat 55 to rotate on the planetary base 51, and the reverse rotating gear seat 55 drives the stirring blades on the stirring scraper arm 56 to rotate and stir. On the one hand, when the stirring scraper arm 56 rotates, it can achieve the effect of On the other hand, due to the setting of the meshing gear 53, the stirring blades on the stirring scraper arm 56 rotate in opposite directions to the double-headed stirring blade tooth rod 45, and the two opposite stirring methods can better promote the stirring and mixing of the gypsum in the reactor 1, thereby increasing the overall stirring effect of the reactor 1, and not only achieving the positive and negative stirring and mixing effect of the inner and outer circles of the reactor 1, but also achieving the mixing and stirring effect of the upper and lower layers of the reactor 1. At the same time, the stirring blades on the double-headed stirring blade tooth rod 45 and the stirring scraper arm 56 also move up and down at the same time when rotating, thereby further increasing the stirring range, so that the gypsum material is more fully mixed and stirred.Since the plastic-modified anhydrous fluorinated gypsum needs to maintain a high temperature environment during preparation, the traditional method is to set a heating coil in the interlayer of the reactor 1. The present technical solution designs a temperature control device for controlling the internal temperature of the reactor 1. By starting the heating tube 63, the heating tube 63 heats the gas in the spiral tube 64. When the coupling rod 31 rotates, the cam 39 fixedly connected thereto intermittently squeezes the passive plate 38. The passive plate 38 during squeezing drives the air pressure plate 36 to move through the sliding shaft 37. The passive plate 38 after squeezing passes through the The spring on the air pressure plate 36 moves and resets, and the air pressure plate 36 continuously reciprocates during the rotation of the coupling rod 31. The reciprocating movement generates positive and negative pressures acting on the air pressure chamber 35. When negative pressure is generated, the negative pressure force replenishes hot air from the spiral tube 64 into the air pressure chamber 35 through the one-way valve 65. When the air pressure plate 36 generates positive pressure, the replenished hot air is squeezed into the ventilation chamber 33 through the one-way air inlet pipe 34. The hot air passes through the air inlet chamber 32 and the reciprocating screw rod 41 in turn and enters the stirring shaft 43, and the one-way replenishment is continuously performed. The hot air gradually fills the interior of each double-headed stirring blade tooth rod 45, and utilizes the heat transfer to achieve the purpose of heating the gypsum material in the axial area of ​​the reactor 1. The double-headed stirring blade tooth rod 45 and the stirring shaft 43 are heated to heat the gypsum material at this location during stirring. Combined with the original heating coil, the gypsum material in the inner and outer circles of the reactor 1 is further heated, thereby further promoting the uniformity of the temperature of the internal gypsum material. The reciprocating movement of the air pressure plate 36 in the air pressure chamber 35 provides a one-way circulation power for the gas. After the gas is squeezed into the stirring shaft 43, it enters the isolated air outlet cavity 312 in the reciprocating screw 41 through the telescopic air seat 313, and the gas is returned to the spiral tube 64 from the ventilation chamber 33 through the isolated air outlet cavity 312. The gas continuously circulates in the spiral tube 64 in a one-way manner, and is circulated and heated by the heating tube 63 during the circulation, thereby ensuring that the heating effect of the double-headed stirring blade tooth rod 45 and the stirring shaft 43 always exists, thereby achieving the purpose of continuously heating the gypsum material in the reactor 1. The overall technical solution realizes multi-state stirring through the rotational power generated by a stirring motor 2, thereby achieving the effect of sufficient mixing and stirring, and provides power for temperature circulation during stirring, thereby promoting the gypsum material to fully react, and further achieving the purpose of improving the overall preparation effect of the gypsum material.

[0028] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not limitations of the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present invention. The patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A preparation device for plastic-modified anhydrous fluorgypsum, characterized in that: include: A reaction kettle (1), wherein a stirring motor (2) is installed on the top of the reaction kettle (1), and a temperature control device (3) is provided on the output shaft of the stirring motor (2); A multidirectional stirring device (4), the multidirectional stirring device (4) being arranged on a temperature control device (3), the multidirectional stirring device (4) comprising a reciprocating screw (41) and an auxiliary stirring device (5), the reciprocating screw (41) being arranged on the temperature control device (3), a ball sleeve (42) being slidably connected to the reciprocating screw (41), a stirring shaft (43) being rotatably connected to the surface of the ball sleeve (42), a rack rod (44) being slidably connected to the interior of the stirring shaft (43), and a double-head stirring blade tooth rod (45) being meshed with the surface of the rack rod (44).

2. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 1, characterized in that: The top end of the ball bearing sleeve (42) is fixed to the top of the reactor (1) via a telescopic tube (46); the top end of the rack rod (44) is fixedly connected to the bottom end of the reciprocating screw rod (41); the surface of the double-headed stirring blade tooth rod (45) is rotatably connected to the inside of the stirring shaft (43); a ventilation groove (47) is provided on the double-headed stirring blade tooth rod (45); a cavity is provided inside the double-headed stirring blade tooth rod (45); a sealing sleeve (48) is sleeved on the surface of the stirring shaft (43) at the rotation position of the double-headed stirring blade tooth rod (45); and the inner wall of the sealing sleeve (48) is fixedly connected to the surface of the stirring shaft (43).

3. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 1, characterized in that: The auxiliary stirring device (5) comprises a planetary base (51), the top of the planetary base (51) is fixedly connected to the top of the reaction kettle (1) via a telescopic sleeve (52), the bottom of the planetary base (51) is rotatably connected to a meshing gear (53), the surface of the meshing gear (53) is meshed with a driving gear (54), the planetary base (51) is rotatably connected to a counter-rotating gear seat (55), the surface of the counter-rotating gear seat (55) is fixedly connected to a stirring scraper arm (56), and the stirring scraper arm (56) is fixedly connected to a stirring blade.

4. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 3, characterized in that: The interior of the planetary base (51) is rotatably connected to the surface of the stirring shaft (43), the interior of the driving gear (54) is fixedly connected to the surface of the stirring shaft (43), and the inner wall of the counter-rotating gear seat (55) is meshed with the surface of the meshing gear (53) through teeth.

5. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 1, characterized in that: The temperature control device (3) comprises a coupling rod (31) and a temperature control base (6); one end of the coupling rod (31) is clamped on the output shaft of the stirring motor (2); the other end of the coupling rod (31) is fixedly connected to an air inlet bin (32); the surface of the coupling rod (31) is rotatably connected to a ventilation bin (33); the ventilation bin (33) is fixedly connected to an air pressure bin (35) via a one-way air inlet pipe (34); the internal piston of the air pressure bin (35) is connected to an air pressure plate (36); one side of the air pressure plate (36) is fixedly connected to a passive plate (38) via a sliding shaft (37); a cam (39) is fixedly connected to the coupling rod (31); and the bottom end of the air inlet bin (32) is fixedly connected to an air outlet bin (310).

6. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 5, characterized in that: The surface of the ventilation chamber (33) is fixedly connected to the top of the reaction kettle (1), the surface of the air pressure chamber (35) is fixedly connected to the top of the reaction kettle (1), the side of the air pressure plate (36) close to the sliding shaft (37) is fixedly connected to the inner wall of the air pressure chamber (35) through a spring, and the surface of the sliding shaft (37) is slidably connected to one side of the air pressure chamber (35).

7. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 5, characterized in that: A through cavity (311) is provided at the axis of each of the air inlet bin (32) and the air outlet bin (310); the air inlet bin (32) is communicated with the interior of the air outlet bin (310) through the through cavity (311); the air outlet bin (310) is communicated with the interior of the reciprocating screw rod (41) through the through cavity (311); an isolated air outlet cavity (312) is provided inside the air outlet bin (310); a telescopic air seat (313) is slidably connected to the bottom of the isolated air outlet cavity (312); the bottom end of the telescopic air seat (313) is fixed inside the stirring shaft (43); and the isolated air outlet cavity (312) is communicated with the interior of the stirring shaft (43) through the telescopic air seat (313).

8. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 7, characterized in that: The temperature control base (6) comprises a mounting frame (61), the mounting frame (61) being mounted on the reaction kettle (1), the mounting frame (61) being fixedly connected to a temperature control box (62), the interior of the temperature control box (62) being fixedly connected to a heating tube (63) and a spiral tube (64).

9. The device for preparing plastic-modified anhydrous fluorgypsum according to claim 8, characterized in that: The air outlet end and the air inlet end of the spiral tube (64) are fixedly connected to the surface of the air pressure chamber (35) and the surface of the air outlet chamber (310) respectively; the air pressure chamber (35) is fixedly connected to a one-way valve (65) at the connection point of the air outlet end of the spiral tube (64); and the air inlet end of the spiral tube (64) is in communication with the interior of the air outlet chamber (310).

10. A method for preparing plastic-modified anhydrous fluorgypsum, the method being applied to the device for preparing plastic-modified anhydrous fluorgypsum according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Feeding: anhydrous fluorinated gypsum and plastic raw materials are transported to the reaction kettle (1) through a feeding system; Step 2: stirring, including the following steps, S1, starting the stirring motor (2), the output shaft of the stirring motor (2) synchronously drives the air inlet bin (32), the air outlet bin (310), the reciprocating screw rod (41) and the rack rod (44) to rotate through the coupling rod (31), and the rack rod (44) drives the stirring shaft (43) as a whole to drive the multiple double-head stirring blade tooth rods (45) to revolve and stir, thereby achieving preliminary stirring; S2, the reciprocating screw (41) drives the stirring shaft (43) and the planetary base (51) to move up and down through the ball sleeve (42) while rotating, and the stirring shaft (43) rotates and moves up and down, and drives the double-headed stirring blade tooth rod (45) to mesh with the rack rod (44) during the up and down movement, and the double-headed stirring blade tooth rod (45) realizes self-rotation during the revolution, so as to realize the stirring and mixing of the gypsum material in the upper and lower layers; S3, the stirring shaft (43) synchronously drives the driving gear (54) to rotate when rotating, and the driving gear (54) drives the reverse rotating gear seat (55) to rotate on the planetary base (51) through the meshing gear (53), and the reverse rotating gear seat (55) drives the stirring blades on the stirring scraper arm (56) to rotate and stir, and the stirring scraper arm (56) realizes the work of scraping the gypsum material on the inner wall of the reaction kettle (1); Step 3: Heating, including the following steps: S1. Start the heating tube (63). The heating tube (63) heats the gas in the spiral tube (64). The coupling rod (31) continuously presses the passive plate (38) through the cam (39) during rotation. After the pressure is over, the passive plate (38) is reset by the spring on the air pressure plate (36). When the air pressure plate (36) is reset, a negative pressure is generated in the air pressure chamber (35). The negative pressure is replenished from the spiral tube (64) into the air pressure chamber (35) through the one-way valve (65) until the passive plate (38) is reset. When the air pressure plate (36) is squeezed for the first time, the passive plate (38) drives the air pressure plate (36) through the sliding shaft (37) to squeeze the hot air in the air pressure chamber (35) into the ventilation chamber (33) through the one-way air inlet pipe (34). The hot air enters the stirring shaft (43) through the air inlet chamber (32) and the reciprocating screw rod (41) in sequence, and gradually fills the inside of the double-headed stirring blade tooth rod (45), thereby heating the double-headed stirring blade tooth rod (45) and the stirring shaft (43), so that the stirring shaft (43) can be heated during stirring. S2, the air pressure chamber (35) provides circulating power for the gas. After the gas is squeezed into the stirring shaft (43), it enters the isolated gas outlet cavity (312) in the reciprocating screw (41) through the telescopic gas seat (313). The isolated gas outlet cavity (312) transports the gas to the spiral tube (64) through the ventilation chamber (33). The gas is circulated and heated by the heating tube (63) in the spiral tube (64), thereby achieving the work of heating the double-head stirring blade tooth rod (45) and the stirring shaft (43) by the gas circulation. Step 4: Discharging the prepared plastic modified anhydrous fluorgypsum from the reaction kettle (1).

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