Preparation device and preparation process for hydromagnesite composite flame retardant

Abstract

The invention discloses a preparation device for a hydromagnesite composite flame retardant and a preparation process of the hydromagnesite composite flame retardant, and relates to the technical field of material mixing. The power assembly is arranged on the top of the stirring barrel and can be connected or disconnected with power output in a self-adaptive mode according to the water amount descending degree, and the negative pressure assembly is connected with the power assembly and conducts circulating negative pressure water pumping through power provided by the power assembly. A stirring device used for stirring and spraying is fixedly embedded in the center of the first belt wheel, the top of an inner cavity of the stirring device is connected with a conical water baffle through a sealing bearing, and the bottom of the outer side of the stirring device is connected with a water filtering net through a sealing bearing. And the negative pressure assembly can continuously and circularly extract the mixed additive which permeates and is filtered from the bottom upwards, so that the mixed additive enters the stirring device again to be sprayed from top to bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of material mixing, and specifically to a preparation device and a preparation process for a water magnesite composite flame retardant. Background Art

[0002] The water magnesite composite flame retardant is a new type of inorganic flame retardant, and its core component is hydromagnesite (HM). The chemical formula of hydromagnesite is 3MgCO3·Mg(OH)2·3H2O, which is mainly composed of magnesium oxide (MgO), carbon dioxide (CO2) and water (H2O). In addition, in order to improve its performance, other components are often added. The preparation of the water magnesite composite flame retardant involves multiple key devices, and these devices work together to achieve steps such as mixing, pulverizing, surface modification and packaging of the flame retardant. Through the above process flow, the water magnesite composite flame retardant can not only meet the requirements of high-efficiency flame retardancy, but also take into account environmental protection and economy, and is a flame retardant material with excellent performance.

[0003] In the existing production process, the modification process of the water magnesite ore powder is usually to mix the water magnesite ore powder with a silane coupling agent and other additives, and their respective components also need to be strictly proportioned to achieve the optimal modification effect. However, when the existing stirring device is stirring, since most of the silane coupling agents are mixed additives, the direct pouring into the stirring device is not conducive to the full mixing of the water magnesite ore powder with them. Moreover, during stirring, a part of the mixed additives flows downward along the gaps between the powder particles and finally converges at the bottom of the stirring device. It is very difficult for these mixed additives to continue to participate in the mixing, resulting in a change in the proportion between the materials, which may cause incomplete modification of a part of the water magnesite ore powder and insufficient hydrophobicity, resulting in sticking and agglomeration when mixed with other materials for melting later, affecting the melting efficiency. In addition, the incomplete modification of the water magnesite ore powder and other materials melted together may also affect the flame retardant performance of the final finished flame retardant.

[0004] In view of the above problems, there is an urgent need to innovate and design on the basis of the original preparation device for the water magnesite composite flame retardant. Summary of the Invention

[0005] The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. Specifically, the purpose of the present invention is to provide a preparation device and a preparation process for a water magnesite composite flame retardant to solve the problem that the mixed additives converging at the bottom of the stirring device are difficult to mix, resulting in incomplete modification of the water magnesite ore powder as mentioned in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A preparation device and a preparation process for a water magnesite composite flame retardant, including a stirring barrel, a cover plate is installed on the top of the stirring barrel, one end of the top of the stirring barrel is connected to a support frame, and a pulley one is connected to the center of the top of the stirring barrel through a bearing: It also includes a power component arranged on the top of the stirring barrel that can adaptively connect or disconnect the power output according to the degree of water level drop, and a negative pressure component that is connected to the power component and performs cyclic negative pressure pumping by the power provided by this component. A stirring device for stirring and spraying is fixedly embedded in the center of the pulley one. A conical water baffle is connected to the top of the inner cavity of the stirring device through a sealed bearing, and a water filter net is connected to the outer bottom of the stirring device through a sealed bearing.

[0007] Preferably, the power component includes a cylinder, a water storage tank, and a bevel gear one. The bottoms of the cylinder, the water storage tank, and the bevel gear one are all installed on the top of the stirring barrel. The output end of the cylinder is fixedly connected to a connecting plate. The bottom of one end of the connecting plate is connected to a water pressing plate through a connecting rod. The surface of the water pressing plate is movably embedded in the interior of the water storage tank. The bottom of the other end of the connecting plate is connected to a driving motor two. The bottom of the driving motor two is connected to a self-returning cross connecting block. The bottom of the self-returning cross connecting block corresponds to the top of the bevel gear one. The surface of the bevel gear one meshes with a bevel gear two. The bevel gear two is movably embedded in the surface of the support frame through a circumferential cutting groove opened on the surface.

[0008] Preferably, a bearing is provided at the connection between the bevel gear one and the stirring barrel, and sealing rubber strips are attached to the contact surfaces of the water storage tank and the water pressing plate.

[0009] Preferably, the negative pressure component includes a connecting rod, a negative pressure tank one, and a negative pressure tank two. The connecting rod is movably embedded in the inner cavities of the stirring device and the conical water baffle. One end of the top of the connecting rod is connected to a sleeve plate. A connecting column is inserted into the interior of the sleeve plate. The connecting column is fixedly connected to the non-tooth surface side of the bevel gear two. A fixing device is movably sleeved on the surface of the connecting rod. The bottom of the fixing device is connected to both sides of the top of the negative pressure tank one. Two forked connecting rods are symmetrically connected to both sides of the surface of the connecting rod. The bottoms of the two forked connecting rods are commonly connected to a piston one. The bottom of the connecting rod is connected to a piston two. The bottom of the negative pressure tank two is connected through a guide pipe one. A one-way valve is provided at the top of the guide pipe one. The top of the guide pipe one is connected through to the bottom of one side of the negative pressure tank one. The bottom of the other side of the negative pressure tank one is connected through a guide pipe two. The surface of the guide pipe two penetrates one side of the surface of the fixing device. The top of the guide pipe two is connected through and embedded in the surface of the conical water baffle. A water blocking ring is movably embedded in the bottom of the negative pressure tank two. The bottom of the negative pressure tank one is connected to the top of the negative pressure tank two. Through grooves are opened on the connection surfaces of the negative pressure tank one and the negative pressure tank two.

[0010] Preferably, the circular parts at the upper and lower ends of the fixing device are bearings, and the outer sides of the bearings are connected to the inner surface of the stirring device. The first piston moves inside the first negative pressure tank, and the second piston moves inside the second negative pressure tank. A hollow column is installed through the center of the bottom of the inner cavity of the first negative pressure tank and is interconnected with the through groove at the top of the second negative pressure tank.

[0011] Preferably, the bottom of the second negative pressure tank is connected to the bottom of the stirring device through a bearing. The water baffle ring normally contacts the bottom of the inner cavity of the stirring barrel at the bottom, and when it moves, the inclined surface at the top fits the inclined surface of the opening at the bottom of the second negative pressure tank.

[0012] Preferably, a screw sealing cover is provided at the center of the surface of the water pressing plate. Limiting blocks are provided on both sides of the inner wall of the water storage tank and are fitted into the openings on both sides of the water pressing plate. A water guiding pipe is connected to the bottom of the water storage tank. A gravity valve is provided at the water inlet of the water guiding pipe, and the water outlet of the water guiding pipe is located at the gap between the inner cavity of the stirring device and the outer surface of the conical water baffle.

[0013] Preferably, a toothed belt meshes with the surface of the first pulley. A central hole is opened at the top of the stirring barrel. The bottom of the first pulley is connected to the center of the top of the stirring barrel through a bearing. The inner side of one end of the toothed belt meshes with the second pulley. The bottom of the moving shaft of the second pulley is embedded in one side of the top surface of the stirring barrel. The top of the second pulley is connected to a first driving motor through a moving shaft. The bottom of the first driving motor is fixed to one side of the top of the stirring barrel through a support frame. An inclined pushing plate is further provided at the bottom of the stirring device. The bottom of the inclined pushing plate fits the top of the water filtering net, and the inclined surface of the inclined pushing plate fits the inclined surface at the bottom of the inner cavity of the stirring barrel. The top of the stirring device is embedded in the center of the top of the stirring barrel through a bearing.

[0014] Preferably, the inside of the stirring rod at the top of the stirring device is hollow. The top of the stirring device is grooved and is interconnected with the inside of the stirring rod. A water outlet hole is provided at the bottom end of the stirring rod at the top of the stirring device. The outer side of the water filtering net is fixedly installed at the bottom of the inner cavity of the stirring barrel.

[0015] A preparation process for a water-magnesite composite flame retardant, the preparation process comprising the following steps: First step: The air cylinder gradually presses down to the top of the conical baffle according to the remaining mixed additives inside the water storage tank for spraying, and connects the power source to the first bevel gear, and then drives the connecting rod to move vertically up and down through the first bevel gear; Second step: The movement of the connecting rod drives the first piston and the second piston to move synchronously, gradually moves the mixed additives from the second negative pressure tank to the inside of the first negative pressure tank and transports them to the top of the conical water baffle, realizing the cyclic extraction of the mixed additives; Step 3: The mixed additive drawn to the top of the conical water baffle flows out through the water outlet holes of the stirring rods at the top of the stirring device and is mixed with the magnesium oxychloride ore powder again.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the compression of the air cylinder, the mixed additive inside the water storage tank is continuously extruded. When the mixed additive inside the water storage tank is pressurized, it synchronously releases pressure downward, triggering the gravity valve of the water guiding pipe at the bottom of the water storage tank to open. The mixed additive flows into the interior of the stirring device along the water guiding pipe. Due to the obstruction of the conical water baffle, it can only flow to the stirring rods around the top of the stirring device and is sprayed through the water outlet connected to the stirring rod. At the same time, the driving motor 1 drives the belt pulley 1 to rotate through the belt pulley 2 and the toothed belt. Then, the belt pulley 1 drives the stirring device to rotate. At this time, stirring and full-angle spraying can be carried out synchronously, enabling the mixed additive to cover the surface of the magnesium oxychloride ore powder to the greatest extent.

[0017] When all the mixed additive has flowed out and the bottom of the water pressing plate fits the inner surface of the water storage tank, due to the falling of the water pressing plate, the self-returning cross-shaped connecting block is driven to fall through the connecting plate until the self-returning cross-shaped connecting block falls to fit the groove on the surface of the bevel gear 1, locking the bevel gear 1 and driving it to rotate. When the bevel gear 1 rotates, it drives the bevel gear 2 to rotate. When the bevel gear 2 rotates, the connecting column connected to its non-toothed surface drives the connecting rod to move vertically up and down through the sleeve plate. When the connecting rod moves, it drives the piston 1 and the piston 2 connected to it to move synchronously. When the connecting rod moves upward for the first time, the water blocking ring is sucked upward by the negative pressure of the piston 2 to fit the bottom of the negative pressure tank 2. Subsequently, after being filtered by the water filter net, the mixed additive accumulated at the bottom of the stirring barrel loses the block of the water blocking ring and is also synchronously sucked into the interior of the negative pressure tank 2 by the negative pressure suction. Then, the connecting rod moves downward, the piston 2 discharges air, driving the water blocking ring to fall and locking the mixed additive inside the negative pressure tank 2. When the water blocking ring is locked, the pressure driven by the continuous downward pressing of the piston 2 will cause the mixed additive to flow into the interior of the negative pressure tank 1 through the diversion pipe 1. And because a one-way valve is provided at the water outlet end of the diversion pipe 1, the mixed additive will not flow back into the interior of the negative pressure tank 2. Then, the connecting rod moves upward again, and the above operation is repeated inside the negative pressure tank 2. The interior of the negative pressure tank 1 obtains air through the diversion pipe 2 for negative pressure suction. When waiting for the connecting rod to fall again, the mixed additive inside it is squeezed toward the diversion pipe 2 and flows out through it to the top of the conical water baffle. It should be noted that the above operation is the first cycle. Since the piston 1 and the piston 2 move synchronously, during subsequent cycles, while the diversion pipe 1 transports the mixed additive to the negative pressure tank 1, the mixed additive inside the negative pressure tank 1 will also be transported to the diversion pipe 2 and to the top of the conical water baffle. At this time, only by repeating the above operation can the mixed additive accumulated at the bottom of the inner cavity of the stirring barrel be continuously pumped upward, maximizing the avoidance of ratio changes. Description of the Drawings

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the stirring barrel of the present invention.

[0020] Figure 3 Schematic sectional view of the three-dimensional structure of the present invention.

[0021] Figure 4 Schematic diagram of the transmission structure of the stirring device of the present invention.

[0022] Figure 5 Schematic diagram of the disassembled three-dimensional structure of the present invention.

[0023] Figure 6 Schematic diagram of the disassembled structure of the power component of the present invention.

[0024] Figure 7 Schematic overall sectional view of the negative pressure component structure of the present invention.

[0025] Figure 8 Schematic diagram of the structural position of the fixing device of the present invention.

[0026] Figure 9 Schematic partial sectional view of the negative pressure component structure of the present invention.

[0027] Figure 10 Schematic partial disassembled view of the negative pressure component structure of the present invention.

[0028] Figure 11 Schematic sectional view of the structure of the stirring device of the present invention.

[0029] Figure 12 Schematic diagram of the moving track of the sleeve plate structure of the present invention.

[0030] Figure 13 Schematic diagram of the dynamic structure in the exhaust state of the present invention.

[0031] Figure 14 Schematic diagram of the dynamic structure in the suction state of the present invention.

[0032] In the figure: 1. Stirring barrel; 11. Cover plate; 12. Support frame; 2. Pulley 1; 21. Toothed belt; 22. Pulley 2; 23. Driving motor 1; 24. Stirring device; 25. Conical water baffle; 26. Water filter net; 3. Cylinder; 31. Connecting plate; 32. Pressing water plate; 33. Water storage tank; 34. Driving motor 2; 35. Self-returning cross connecting block; 36. Bevel gear 1; 37. Bevel gear 2; 4. Connecting rod; 41. Sleeve plate; 42. Fixing device; 43. Forked connecting rod; 44. Piston 1; 45. Piston 2; 46. Negative pressure tank 1; 47. Negative pressure tank 2; 48. Diversion pipe 1; 49. Diversion pipe 2; 410. Water retaining ring. Detailed implementation mode

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 14 , the present invention provides a technical solution: a preparation device and a preparation process for a water-magnesite composite flame retardant, including a stirring barrel 1, a cover plate 11 is installed on the top of the stirring barrel 1, one end of the top of the stirring barrel 1 is connected with a support frame 12, and a pulley one 2 is connected to the center of the top of the stirring barrel 1 through a bearing. It also includes a power assembly arranged on the top of the stirring barrel 1 that can adaptively connect or disconnect the power output according to the degree of water level drop, and a negative pressure assembly connected to the power assembly and used to perform circulating negative pressure pumping through the power provided by this assembly. A stirring device 24 for stirring and spraying is fixedly embedded in the center of the pulley one 2. A conical water baffle 25 is connected to the top of the inner cavity of the stirring device 24 through a sealed bearing, and a water filter net 26 is connected to the outer bottom of the stirring device 24 through a sealed bearing.

[0035] In specific implementation, the bevel gear two 37 is supported by the support frame 12 to prevent its deviation. The power of the driving motor one 23 is transmitted to the stirring device 24 through the pulley one 2. The power assembly can achieve automatic positioning and drive the negative pressure assembly to move. The negative pressure assembly can continuously circulate and pump the mixed additives filtered and infiltrated at the bottom upward, so that they re-enter the inside of the stirring device 24 for spraying from top to bottom. Due to the sealed connection between the stirring device 24 and the conical water baffle 25, the mixed additives will not penetrate into the device, but only flow into the stirring rod inside the stirring device 24. The water filter net 26 is used to separate the mixed additives infiltrated to the bottom from the water-magnesite ore powder.

[0036] As a further implementation scheme of the present invention, the power assembly includes a cylinder 3, a water storage tank 33 and a bevel gear one 36. The bottoms of the cylinder 3, the water storage tank 33 and the bevel gear one 36 are all installed on the top of the stirring barrel 1. The output end of the cylinder 3 is fixedly connected with a connecting plate 31. A water pressing plate 32 is connected to the bottom of one end of the connecting plate 31 through a connecting rod. The surface of the water pressing plate 32 is movably embedded in the inside of the water storage tank 33. A driving motor two 34 is connected to the bottom of the other end of the connecting plate 31. A self-returning cross connecting block 35 is connected to the bottom of the driving motor two 34. The bottom of the self-returning cross connecting block 35 corresponds to the top of the bevel gear one 36. A bevel gear two 37 is meshed on the surface of the bevel gear one 36. The bevel gear two 37 is movably embedded in the surface of the support frame 12 through a circumferential cutting groove opened on the surface.

[0037] In specific implementation, a cross groove corresponding to the bottom of the self - rebounding cross - connecting block 35 is formed at the top of the first bevel gear 36, and the contact points in the opposite directions between the self - rebounding cross - connecting block 35 and the first bevel gear 36 are both designed as curved surfaces, which is convenient for mutual engagement. A roller can also be arranged on the supporting surface at the top of the support frame 12 to reduce the frictional resistance when the second bevel gear 37 rotates. When all the mixed additives flow out, when the bottom of the water - pressing plate 32 fits the inner surface of the water storage tank 33, the falling of the water - pressing plate 32 drives the self - rebounding cross - connecting block 35 to fall until the self - rebounding cross - connecting block 35 falls to fit the surface groove of the first bevel gear 36. Since the self - rebounding cross - connecting block 35 is driven by the output end of the second driving motor 34 to rotate continuously during the falling process, if the position is offset when the bottom of the self - rebounding cross - connecting block 35 contacts the top of the first bevel gear 36, the self - rebounding cross - connecting block 35 can automatically contract upward under the extrusion force. Until the two - end grooves and the protrusions are aligned with each other, the self - rebounding cross - connecting block 35 loses the extrusion force and automatically falls, locking the first bevel gear 36 and driving it to rotate. When the first bevel gear 36 rotates, it drives the second bevel gear 37 to rotate, realizing the automatic connection of the power source.

[0038] As a further implementation scheme of the present invention, bearings are provided at the connection between the first bevel gear 36 and the mixing barrel 1, and sealing rubber strips are attached to the contact surfaces between the water storage tank 33 and the water - pressing plate 32.

[0039] In specific implementation, the first bevel gear 36 can rotate freely through the bearings, and the sealing rubber strips attached to the contact surfaces between the water storage tank 33 and the water - pressing plate 32 can prevent the mixed additives from overflowing to the outside of the water storage tank 33 when the water - pressing plate 32 is pressed down.

[0040] As a further embodiment of the present invention, the negative pressure assembly includes a connecting rod 4, a first negative pressure tank 46 and a second negative pressure tank 47. The connecting rod 4 is movably embedded in the inner cavities of the stirring device 24 and the conical water baffle 25. One end of the top of the connecting rod 4 is connected with a sleeve plate 41. A connecting column is inserted inside the sleeve plate 41. The connecting column is fixedly connected to the non-tooth surface side of the second bevel gear 37. A fixing device 42 is movably sleeved on the surface of the connecting rod 4. The bottom of the fixing device 42 is connected to both sides of the top of the first negative pressure tank 46. Two forked connecting rods 43 are symmetrically connected to both sides of the surface of the connecting rod 4. A first piston 44 is jointly connected to the bottoms of the two forked connecting rods 43. A second piston 45 is connected to the bottom of the connecting rod 4. A first guide pipe 48 is connected through the bottom of the second negative pressure tank 47. A one-way valve is provided at the top of the first guide pipe 48. The top of the first guide pipe 48 is connected through the bottom of one side of the first negative pressure tank 46. A second guide pipe 49 is connected through the bottom of the other side of the first negative pressure tank 46. One side of the surface of the second guide pipe 49 penetrates through the surface of the fixing device 42. The top of the second guide pipe 49 is embedded through the surface of the conical water baffle 25. A water baffle ring 410 is movably embedded at the bottom of the second negative pressure tank 47. The bottom of the first negative pressure tank 46 is connected to the top of the second negative pressure tank 47. Through grooves are provided on the connection surfaces of the first negative pressure tank 46 and the second negative pressure tank 47.

[0041] In specific implementation, by movably embedding the connecting rod 4 in the inner cavities of the stirring device 24 and the conical water baffle 25, when it moves up and down, it will not affect the rotation of the stirring device 24. When the second bevel gear 37 rotates, the connecting column on its non-tooth surface drives the connecting rod 4 to move vertically up and down through the sleeve plate 41. When the connecting rod 4 moves up for the first time, the water baffle ring 410 is sucked up by the negative pressure of the second piston 45 and fits against the bottom of the second negative pressure tank 47. Subsequently, the mixed additive loses the block of the water baffle ring 410 and is also brought into the interior of the second negative pressure tank 47 by the negative pressure suction synchronously. Then the connecting rod 4 moves down, the second piston 45 expels air, drives the water baffle ring 410 to fall and locks the mixed additive in the interior of the second negative pressure tank 47. When the water baffle ring 410 is locked, the pressure generated by the continuous downward pressure of the second piston 45 will cause the mixed additive to flow into the interior of the first negative pressure tank 46 through the first guide pipe 48. And because a one-way valve is provided at the water outlet end of the first guide pipe 48, the mixed additive will not flow back into the interior of the second negative pressure tank 47. Then the connecting rod 4 moves up again, and the interior of the second negative pressure tank 47 repeats the above operation. The interior of the first negative pressure tank 46 obtains air through the second guide pipe 49 for negative pressure suction. When the connecting rod 4 moves down again, the mixed additive inside it is squeezed towards the second guide pipe 49 and flows out through it to the top of the conical water baffle 25. The first guide pipe 48 and the second guide pipe 49 can be set as pipes with smaller inner diameters, which is further convenient for the upward extrusion of the mixed additive. Secondly, the top of the second guide pipe 49 is bent downward, which can prevent the mixed additive at the top of the conical water baffle 25 from flowing back.

[0042] As a further embodiment of the present invention, the circular parts at the upper and lower ends of the fixing device 42 are bearings, and the outer sides of the bearings are connected to the inner surface of the stirring device 24. The first piston 44 moves inside the first negative pressure tank 46, and the second piston 45 moves inside the second negative pressure tank 47. A hollow column is installed through the center of the bottom of the inner cavity of the first negative pressure tank 46 and is interconnected with the through groove at the top of the second negative pressure tank 47.

[0043] In specific implementation, the bearings at the upper and lower ends of the fixing device 42 are used to ensure that the support blocks inside do not rotate when the stirring device 24 rotates. The first piston 44 and the second piston 45 are used to suck air in and out of the first negative pressure tank 46 and the second negative pressure tank 47 internally in a cycle, realizing intermittent negative pressure adsorption.

[0044] As a further embodiment of the present invention, the bottom of the second negative pressure tank 47 is connected to the bottom of the stirring device 24 through a bearing. The normal state of the water blocking ring 410 is that its bottom contacts the bottom of the inner cavity of the stirring barrel 1, and when it moves, the inclined surface at the top coincides with the inclined surface of the bottom opening of the second negative pressure tank 47.

[0045] In specific implementation, the bearing is used to ensure that the rotation of the stirring device 24 does not affect the stability of the second negative pressure tank 47 itself, and at the same time has the function of fixing the second negative pressure tank 47, keeping its bottom suspended to facilitate the entry of the mixed additive. Since an extension plate is provided at the top of the inner cavity of the water blocking ring 410, it can move synchronously with the inhalation and exhalation of the second piston 45. Specifically, when the water blocking ring 410 is not under negative pressure suction and is at the bottom, it can isolate the internal and external mixed additives. When the water blocking ring 410 is under negative pressure suction and moves up to coincide with the bottom inclined surface of the second negative pressure tank 47, it does not affect the flow of the mixed additive into the second negative pressure tank 47.

[0046] As a further embodiment of the present invention, a screw sealing cover is provided at the center of the surface of the water pressing plate 32. Limiting blocks are provided on both sides of the inner wall of the water storage tank 33 and are fitted with the openings on both sides of the water pressing plate 32. A water guiding pipe is connected to the bottom of the water storage tank 33. A gravity valve is provided at the water inlet of the water guiding pipe, and the water outlet of the water guiding pipe is located at the gap between the inner cavity of the stirring device 24 and the outer surface of the conical water blocking plate 25.

[0047] In specific implementation, the screw sealing cover is used to prevent the overflow of the internal mixed additive when the water pressing plate 32 presses down. Further, the pressure value of the gravity valve at the water inlet of the water guiding pipe can be set to open only when the internal mixed additive in the water storage tank 33 is under additional pressure, and it will not open if only filled with the mixed additive without additional pressure. Secondly, the water outlet of the water guiding pipe is located at the gap between the inner cavity of the stirring device 24 and the outer surface of the conical water blocking plate 25, so that it will not affect the rotation of the stirring device 24.

[0048] As a further embodiment of the present invention, a toothed belt 21 is engaged on the surface of the first pulley 2. An opening is provided at the center of the top of the stirring barrel 1. The bottom of the first pulley 2 is connected to the center of the top of the stirring barrel 1 through a bearing. The inner side of one end of the toothed belt 21 is engaged with a second pulley 22. The bottom of the movable shaft of the second pulley 22 is embedded in one side of the top surface of the stirring barrel 1. The top of the second pulley 22 is connected to a first driving motor 23 through a movable shaft. The bottom of the first driving motor 23 is fixed to one side of the top of the stirring barrel 1 through a bracket. An inclined push plate is further provided at the bottom of the stirring device 24. The bottom of the inclined push plate is attached to the top of the water filtering net 26, and the inclined surface of the inclined push plate is attached to the inclined surface of the bottom of the inner cavity of the stirring barrel 1. The top of the stirring device 24 is embedded in the center of the top of the stirring barrel 1 through a bearing.

[0049] In specific implementation, the first pulley 2, the second pulley 22 and the first driving motor 23 are supported by the top of the stirring barrel 1. Through the reserved opening at the top of the stirring barrel 1, the stirring device 24 can extend a part of itself to be connected with the first pulley 2. Both the second pulley 22 and the first driving motor 23 are fixedly connected to the movable shaft. A bearing is provided at the part where the bottom of the movable shaft is connected to the stirring barrel 1. The power output by the first driving motor 23 is transmitted to the first pulley 2 through the second pulley 22 and the toothed belt 21, so that the first pulley 2 can drive the stirring device 24 to rotate, achieving the purpose of stirring the materials inside the stirring barrel 1. When discharging, since the inclined push plate at the bottom of the stirring device 24 moves synchronously with the stirring device 24, it can further assist in discharging.

[0050] As a further embodiment of the present invention, a plurality of stirring rods are fixedly connected to the surface of the stirring device 24. The inner part of the top stirring rod is hollow. The top of the stirring device 24 is grooved and communicated with the inside of the top stirring rod. A water outlet hole is provided at the bottom end of the top stirring rod of the stirring device 24. The outer side of the water filtering net 26 is fixedly installed at the bottom of the inner cavity of the stirring barrel 1.

[0051] In specific implementation, by setting the inside of the top stirring rod of the stirring device 24 to be hollow and grooving the top of the stirring device 24 to communicate with the inside of the top stirring rod, the mixed additive can enter its inside and flow out from the water outlet hole at its bottom. With the assistance of the stirring rods at other positions on the stirring device 24, the purpose of mixing while feeding is achieved. Through the extremely small sieve mesh of the water filtering net 26 itself, while blocking the magnesium oxychloride ore powder, it does not affect the downward penetration of the mixed additive. Secondly, the water filtering net 26 itself is higher than the bottom flared opening of the second negative pressure tank 47, which can make the mixed additive have an aggregation space when penetrating to the bottom. And because the outer side of the water filtering net 26 itself is fixed to the inner wall of the stirring barrel 1, it can further stabilize the rotating stirring device 24 at the same time.

[0052] A preparation process for a magnesium oxychloride composite flame retardant, the preparation process comprising the following steps: First step: The cylinder 3 gradually presses down to the top of the conical water baffle 25 for spraying according to the remaining mixed additive inside the water storage tank 33, and connects the power source to the first bevel gear 36. Subsequently, the connecting rod 4 is driven by the first bevel gear 36 to move vertically up and down. Second step: The movement of the connecting rod 4 drives the first piston 44 and the second piston 45 to move synchronously, gradually moving the mixed additive from the second negative pressure tank 47 to the inside of the first negative pressure tank 46 and transporting it to the top of the conical water baffle 25, realizing the cyclic extraction of the mixed additive. Third step: The mixed additive pumped to the top of the conical water baffle 25 flows out through the water outlet holes of the stirring rods at the top of the stirring device 24 and is remixed with the magnesium oxychloride ore powder.

[0053] Working principle: When using the preparation device for the magnesium oxychloride composite flame retardant, first start the cylinder 3 to lift the water pressing plate 32. Subsequently, the proportioned magnesium oxychloride ore powder and the mixed additive are respectively fed from the feeding port on the surface of the stirring barrel 1 and the feeding port at the top of the water pressing plate 32. Then, the two feeding ports are closed, the cylinder 3 retracts, and at the same time, the first driving motor 23 and the second driving motor 34 are started. At this time, the water pressing plate 32 loses the jacking force and due to the retraction force of the cylinder 3, it continuously descends and squeezes the mixed additive inside the water storage tank 33. When the mixed additive inside the water storage tank 33 is pressurized, it simultaneously releases pressure downward, triggering the gravity valve of the water guiding pipe at the bottom of the water storage tank 33 to open. The mixed additive flows along the water guiding pipe into the inside of the stirring device 24. Due to the obstruction of the conical water baffle 25, it can only flow to the stirring rods around the top of the stirring device 24 and is sprayed through the water outlet holes connected to the stirring rods. At the same time, the first driving motor 23 drives the second pulley 22 and the toothed belt 21 to drive the first pulley 2 to rotate through the toothed belt 21, and then the first pulley 2 drives the stirring device 24 to rotate. At this time, stirring and full-angle spraying can be carried out synchronously, enabling the mixed additive to cover the surface of the magnesium oxychloride ore powder to the greatest extent.

[0054] When all the mixed additives have flowed out and the bottom of the water pressing plate 32 fits the inner surface of the water storage tank 33, due to the falling of the water pressing plate 32, the self-returning cross connection block 35 is driven to fall through the connection plate 31 until the self-returning cross connection block 35 falls to fit the surface groove of the bevel gear one 36. Since the self-returning cross connection block 35 is continuously rotated by the output end of the drive motor two 34 during the falling process, if the position of the bottom of the self-returning cross connection block 35 is offset when it contacts the top of the bevel gear one 36, the self-returning cross connection block 35 can automatically contract upward under the extrusion force until the two ends of the groove body are aligned with the protrusions. Then, the self-returning cross connection block 35 loses the extrusion force and automatically falls, locking the bevel gear one 36 and driving it to rotate. When the bevel gear one 36 rotates, it drives the bevel gear two 37 to rotate. When the bevel gear two 37 rotates, the connecting column connected to its non-tooth surface drives the connecting rod 4 to move vertically up and down through the sleeve plate 41. When the connecting rod 4 moves, it drives the piston one 44 and the piston two 45 connected to it to move synchronously. When the connecting rod 4 moves upward for the first time, the water blocking ring 410 is sucked upward by the negative pressure of the piston two 45 to fit the bottom of the negative pressure tank two 47. Subsequently, the mixed additives that have been filtered by the filter screen 26 and gathered at the bottom of the mixing barrel 1 lose the block of the water blocking ring 410 and are also sucked into the interior of the negative pressure tank two 47 by the negative pressure suction synchronously. Then, the connecting rod 4 moves downward, the piston two 45 expels air, drives the water blocking ring 410 to fall, and locks the mixed additives in the interior of the negative pressure tank two 47. When the water blocking ring 410 is locked, the pressure generated by the continuous downward pressing of the piston two 45 will cause the mixed additives to flow into the interior of the negative pressure tank one 46 through the diversion pipe one 48. And because a one-way valve is provided at the water outlet end of the diversion pipe one 48, the mixed additives will not flow back into the interior of the negative pressure tank two 47. Then, the connecting rod 4 moves upward again, and the interior of the negative pressure tank two 47 repeats the above operations. The interior of the negative pressure tank one 46 obtains air through the diversion pipe two 49 for negative pressure suction. When waiting for the connecting rod 4 to move downward again, the mixed additives inside it are squeezed toward the diversion pipe two 49 and flow out through it to the top of the conical water blocking plate 25. It should be noted that the above operations are the first cycle. Since the piston one 44 and the piston two 45 move synchronously, during the subsequent cycles, while the diversion pipe one 48 transports the mixed additives to the negative pressure tank one 46, the mixed additives inside the negative pressure tank one 46 will also be transported to the diversion pipe two 49 and reach the top of the conical water blocking plate 25. At this time, only by repeating the above operations continuously can the mixed additives gathered at the bottom of the inner cavity of the mixing barrel 1 be pumped upward to the greatest extent, and the change of the ratio can be avoided to the greatest extent.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A preparation device for a hydromagnesite composite flame retardant, comprising a stirring barrel (1), a cover plate (11) is installed at the top of the stirring barrel (1), one end of the top of the stirring barrel (1) is connected with a support frame (12), and a first pulley (2) is connected to the center of the top of the stirring barrel (1) through a bearing, and it is characterized in that: It further includes a power component arranged at the top of the stirring barrel (1) that can adaptively connect or disconnect the power output according to the degree of water level drop, and a negative pressure component that is connected to the power component and performs cyclic negative pressure pumping by the power provided by this component. A stirring device (24) for stirring and spraying is fixedly embedded at the center of the first pulley (2). The top of the inner cavity of the stirring device (24) is connected with a conical water baffle (25) through a sealed bearing. The outer bottom of the stirring device (24) is connected with a water filter net (26) through a sealed bearing.

2. The preparation device for a hydromagnesite composite flame retardant according to claim 1, wherein: The power component includes a cylinder (3), a water storage tank (33), and a first bevel gear (36). The bottoms of the cylinder (3), the water storage tank (33), and the first bevel gear (36) are all installed at the top of the stirring barrel (1). The output end of the cylinder (3) is fixedly connected with a connecting plate (31). The bottom of one end of the connecting plate (31) is connected with a water pressing plate (32) through a connecting rod. The surface of the water pressing plate (32) is movably embedded inside the water storage tank (33). The bottom of the other end of the connecting plate (31) is connected with a second driving motor (34). The bottom of the second driving motor (34) is connected with a self - rebounding cross - connecting block (35). The bottom of the self - rebounding cross - connecting block (35) corresponds to the top of the first bevel gear (36). The surface of the first bevel gear (36) meshes with a second bevel gear (37). The second bevel gear (37) is movably embedded on the surface of the support frame (12) through a circumferential cutting groove opened on its surface.

3. The preparation device for a hydro-magnesite composite flame retardant according to claim 2, characterized in that: A bearing is provided at the connection between the first bevel gear (36) and the stirring barrel (1). Sealed rubber strips are attached to the contact surfaces between the water storage tank (33) and the water pressing plate (32).

4. The preparation device for a hydrotalcite composite flame retardant according to claim 2, characterized in that: The negative pressure assembly includes a connecting rod (4), a first negative pressure tank (46), and a second negative pressure tank (47). The connecting rod (4) is movably embedded in the inner cavities of the stirring device (24) and the conical water baffle (25). One end of the top of the connecting rod (4) is connected to a sleeve plate (41). A connecting column is inserted into the inside of the sleeve plate (41), and the connecting column is fixedly connected to the non-toothed surface side of the second bevel gear (37). A fixing device (42) is movably sleeved on the surface of the connecting rod (4). The bottom of the fixing device (42) is connected to both sides of the top of the first negative pressure tank (46). On both sides of the surface of the connecting rod (4), bifurcated connecting rods (43) are symmetrically connected. The bottoms of the two bifurcated connecting rods (43) are jointly connected to a first piston (44). The bottom of the connecting rod (4) is connected to a second piston (45). The bottom of the second negative pressure tank (47) is connected through a first guide pipe (48). A one-way valve is provided at the top of the first guide pipe (48), and the top of the first guide pipe (48) is connected through to the bottom side of the first negative pressure tank (46). The bottom of the other side of the first negative pressure tank (46) is connected through a second guide pipe (49). The surface of the second guide pipe (49) penetrates one side of the surface of the fixing device (42), and the top of the second guide pipe (49) is embedded through the surface of the conical water baffle (25). A water baffle ring (410) is movably embedded at the bottom of the second negative pressure tank (47). The bottom of the first negative pressure tank (46) is connected to the top of the second negative pressure tank (47). Through grooves are provided on the connection surfaces of the first negative pressure tank (46) and the second negative pressure tank (47).

5. The preparation device for a hydromagnesite composite flame retardant according to claim 4, characterized in that: The circular parts at the upper and lower ends of the fixing device (42) are bearings, and the outer sides of the bearings are connected to the inner surface of the stirring device (24). The first piston (44) moves inside the first negative pressure tank (46), and the second piston (45) moves inside the second negative pressure tank (47). A hollow column is installed through the center of the bottom of the inner cavity of the first negative pressure tank (46) and is interconnected with the through groove at the top of the second negative pressure tank (47).

6. The preparation device for a hydro-magnesite composite flame retardant according to claim 4, characterized in that: The bottom of the second negative pressure tank (47) is connected to the bottom of the stirring device (24) through a bearing. The water baffle ring (410) normally contacts the bottom of the inner cavity of the stirring barrel (1) at the bottom, and when it moves, the inclined surface at the top fits with the inclined surface of the bottom opening of the second negative pressure tank (47).

7. The preparation device for a hydromagnesite composite flame retardant according to claim 2, characterized in that: A screw sealing cover is provided at the center of the surface of the water pressing plate (32). Limit blocks are provided on both sides of the inner wall of the water storage tank (33) and are fitted with the openings on both sides of the water pressing plate (32). The bottom of the water storage tank (33) is connected to a water guiding pipe. A gravity valve is provided at the water inlet of the water guiding pipe, and the water outlet of the water guiding pipe is located at the gap between the inner cavity of the stirring device (24) and the outer surface of the conical water baffle (25).

8. The preparation device for a hydromagnesite composite flame retardant according to claim 1, characterized in that: The surface of the first pulley (2) is engaged with a toothed belt (21). The top center of the mixing barrel (1) is provided with an opening. The bottom of the first pulley (2) is connected to the top center of the mixing barrel (1) through a bearing. The inner side of one end of the toothed belt (21) is engaged with a second pulley (22). The bottom of the movable shaft of the second pulley (22) is embedded in one side of the top surface of the mixing barrel (1). The top of the second pulley (22) is connected to a first driving motor (23) through a movable shaft. The bottom of the first driving motor (23) is fixed to one side of the top of the mixing barrel (1) through a support frame. The bottom of the mixing device (24) is also provided with an inclined push plate. The bottom of the inclined push plate is attached to the top of the water filtering net (26), and the inclined surface of the inclined push plate is attached to the inclined surface of the bottom of the inner cavity of the mixing barrel (1). The top of the mixing device (24) is embedded in the center of the top of the mixing barrel (1) through a bearing.

9. The preparation device for a hydromagnesite composite flame retardant according to claim 1, wherein: The surface of the mixing device (24) is fixedly connected with a plurality of mixing rods. The mixing rod at the top is hollow inside. The top of the mixing device (24) is provided with a groove and is communicated with the inside of the top mixing rod. The bottom end of the mixing rod at the top of the mixing device (24) is provided with a water outlet hole. The outer side of the water filtering net (26) is fixedly installed at the bottom of the inner cavity of the mixing barrel (1).

10. A preparation process for a hydromagnesite composite flame retardant, applicable to a preparation device for a hydromagnesite composite flame retardant described in any one of claims 4 to 6, characterized in that, This process includes the following steps: The first step: The cylinder (3) is gradually pressed down to the top of the conical water baffle (25) for spraying according to the remaining mixed additive inside the water storage tank (33), and the power source is connected to the first bevel gear (36), and then the connecting rod (4) is driven to move vertically up and down through the first bevel gear (36); The second step: The movement of the connecting rod (4) drives the first piston (44) and the second piston (45) to move synchronously, gradually moves the mixed additive from the second negative pressure tank (47) to the inside of the first negative pressure tank (46) and transports it to the top of the conical water baffle (25), realizing the cyclic extraction of the mixed additive; The third step: The mixed additive pumped to the top of the conical water baffle (25) flows out through the water outlet hole of the mixing rod at the top of the mixing device (24) and is mixed with the magnesium oxychloride ore powder again.

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